diff --git a/components/net/Kconfig b/components/net/Kconfig
index 2ad34567e9..a03703e47b 100644
--- a/components/net/Kconfig
+++ b/components/net/Kconfig
@@ -1,495 +1,8 @@
 menu "Network"
 
-menu "Socket abstraction layer"
-
-config RT_USING_SAL
-    bool "Enable socket abstraction layer"
-    select RT_USING_NETDEV
-    select RT_USING_SYSTEM_WORKQUEUE
-    default n
-
-    if RT_USING_SAL
-
-        config SAL_INTERNET_CHECK
-            bool "Enable the ability that check internet status"
-            default y
-            help
-                The ability that check internet status is provided by RT-Thread.
-
-        if RT_USING_LWIP || AT_USING_SOCKET
-
-            menu "protocol stack implement"
-
-                config SAL_USING_LWIP
-                    bool "Support lwIP stack"
-                    default y
-                    depends on RT_USING_LWIP
-
-                config SAL_USING_AT
-                    bool "Support AT Commands stack"
-                    default y
-                    depends on AT_USING_SOCKET
-
-                config SAL_USING_TLS
-                    bool "Support MbedTLS protocol"
-                    default y
-                    depends on PKG_USING_MBEDTLS
-            endmenu
-
-        endif
-
-        config SAL_USING_POSIX
-            bool "Enable BSD socket operated by file system API"
-            default n
-            select RT_USING_POSIX_FS
-            select RT_USING_POSIX_SELECT
-            help
-                Let BSD socket operated by file system API, such as read/write and involveed in select/poll POSIX APIs.
-
-        if !SAL_USING_POSIX
-
-            config SAL_SOCKETS_NUM
-                int "the maximum number of sockets"
-                default 16
-
-        endif
-
-    endif
-
-endmenu
-
-menu "Network interface device"
-
-config RT_USING_NETDEV
-    bool "Enable network interface device"
-    default n
-
-    if RT_USING_NETDEV
-
-        config NETDEV_USING_IFCONFIG
-            bool "Enable ifconfig features"
-            default y
-
-        config NETDEV_USING_PING
-            bool "Enable ping features"
-            default y
-
-        config NETDEV_USING_NETSTAT
-            bool "Enable netstat features"
-            default y
-
-        config NETDEV_USING_AUTO_DEFAULT
-            bool "Enable default netdev automatic change features"
-            default y
-
-        config NETDEV_USING_IPV6
-            bool "Enable IPV6 protocol support"
-            default n
-
-        config NETDEV_IPV4
-            int
-            default 1
-
-        config NETDEV_IPV6
-            int
-            default 1 if NETDEV_USING_IPV6
-            default 0 if !NETDEV_USING_IPV6
-
-        config NETDEV_IPV6_SCOPES
-            bool
-            help
-                Defined to synchronize the ip6_addr structure state
-            default n
-    endif
-
-endmenu
-
-menu "light weight TCP/IP stack"
-config RT_USING_LWIP
-    bool "Enable lwIP stack"
-    select RT_USING_DEVICE
-    default n
-
-    if RT_USING_LWIP
-        choice
-            prompt "lwIP version"
-            default RT_USING_LWIP203
-            help
-                Select the lwIP version
-
-            config RT_USING_LWIP141
-                bool "lwIP v1.4.1"
-
-            config RT_USING_LWIP203
-                bool "lwIP v2.0.3"
-
-            config RT_USING_LWIP212
-                bool "lwIP v2.1.2"
-
-        endchoice
-
-        if (RT_USING_LWIP203 || RT_USING_LWIP212)
-            config RT_USING_LWIP_IPV6
-                bool "IPV6 protocol"
-                default n
-                select NETDEV_USING_IPV6
-                select NETDEV_IPV6_SCOPES if RT_USING_LWIP212
-        endif
-
-        config RT_LWIP_MEM_ALIGNMENT
-            int "Memory alignment"
-            default 8 if ARCH_CPU_64BIT
-            default 4
-
-        config RT_LWIP_IGMP
-            bool "IGMP protocol"
-            default y
-
-        config RT_LWIP_ICMP
-            bool "ICMP protocol"
-            default y
-
-        config RT_LWIP_SNMP
-            bool "SNMP protocol"
-            select RT_LWIP_STATS
-            default n
-
-        config RT_LWIP_DNS
-            bool "Enble DNS for name resolution"
-            select RT_LWIP_UDP
-            default y
-
-        config RT_LWIP_DHCP
-            bool "Enable alloc ip address through DHCP"
-            select RT_LWIP_UDP
-            default y
-
-            if RT_LWIP_DHCP
-                config IP_SOF_BROADCAST
-                    int "SOF broadcast"
-                    default 1
-
-                config IP_SOF_BROADCAST_RECV
-                    int "SOF broadcast recv"
-                    default 1
-            endif
-
-        menu "Static IPv4 Address"
-                config RT_LWIP_IPADDR
-                    string "IPv4: IP address"
-                    default 192.168.1.30
-
-                config RT_LWIP_GWADDR
-                    string "IPv4: Gateway address"
-                    default 192.168.1.1
-
-                config RT_LWIP_MSKADDR
-                    string "IPv4: Mask address"
-                    default 255.255.255.0
-        endmenu
-
-        config RT_LWIP_UDP
-            bool "UDP protocol"
-            default y
-
-        config RT_LWIP_TCP
-            bool "TCP protocol"
-            default y
-
-        config RT_LWIP_RAW
-            bool "RAW protocol"
-            default n
-
-        config RT_LWIP_PPP
-            bool "PPP protocol"
-            default n
-
-        if RT_LWIP_PPP
-            config RT_LWIP_PPPOE
-                bool "PPPoE protocol"
-                default n
-
-            config RT_LWIP_PPPOS
-                bool "PPPoS protocol"
-                default n
-        endif
-
-        config RT_MEMP_NUM_NETCONN
-            int "the number of struct netconns"
-            default 8
-
-        config RT_LWIP_PBUF_NUM
-            int "the number of PBUF"
-            default 16
-
-        config RT_LWIP_RAW_PCB_NUM
-            int "the number of raw connection"
-            default 4
-
-        config RT_LWIP_UDP_PCB_NUM
-            int "the number of UDP socket"
-            default 8 if RT_USING_DFS_NFS
-            default 4
-
-        if RT_LWIP_TCP
-        config RT_LWIP_TCP_PCB_NUM
-            int "the number of TCP socket"
-            default 4
-
-        config RT_LWIP_TCP_SEG_NUM
-            int "the number of TCP segment"
-            default 40
-
-        config RT_LWIP_TCP_SND_BUF
-            int "the size of send buffer"
-            default 8196
-
-        config RT_LWIP_TCP_WND
-            int "the size of TCP send window"
-            default 8196
-        endif
-
-        config RT_LWIP_TCPTHREAD_PRIORITY
-            int "the priority level value of lwIP thread"
-            default 10
-
-        config RT_LWIP_TCPTHREAD_MBOX_SIZE
-            int "the number of mail in the lwIP thread mailbox"
-            default 8
-
-        config RT_LWIP_TCPTHREAD_STACKSIZE
-            int "the stack size of lwIP thread"
-            default 2048 if ARCH_CPU_64BIT
-            default 1024
-
-        config LWIP_NO_RX_THREAD
-            bool "Not use Rx thread"
-            default n
-
-        config LWIP_NO_TX_THREAD
-            bool "Not use Tx thread"
-            default n
-
-        config RT_LWIP_ETHTHREAD_PRIORITY
-            int "the priority level value of ethernet thread"
-            default 12
-
-        config RT_LWIP_ETHTHREAD_STACKSIZE
-            int "the stack size of ethernet thread"
-            default 2048 if ARCH_CPU_64BIT
-            default 1024
-
-        config RT_LWIP_ETHTHREAD_MBOX_SIZE
-            int "the number of mail in the ethernet thread mailbox"
-            default 8
-
-        config RT_LWIP_REASSEMBLY_FRAG
-            bool "Enable IP reassembly and frag"
-            default n
-
-        config LWIP_NETIF_STATUS_CALLBACK
-            int "Enable netif status callback"
-            default 1
-
-        config LWIP_NETIF_LINK_CALLBACK
-            int "Enable netif link status callback"
-            default 1
-
-        config SO_REUSE
-            int "Enable SO_REUSEADDR option"
-            default 1
-
-        config LWIP_SO_RCVTIMEO
-            int "Enable receive timeout for sockets/netconns and SO_RCVTIMEO processing."
-            default 1
-
-        config LWIP_SO_SNDTIMEO
-            int "Enable send timeout for sockets/netconns and SO_SNDTIMEO processing."
-            default 1
-
-        config LWIP_SO_RCVBUF
-            int "Enable SO_RCVBUF processing"
-            default 1
-
-        config LWIP_SO_LINGER
-            int "Enable SO_LINGER processing"
-            default 0
-
-        config RT_LWIP_NETIF_LOOPBACK
-            bool "Enable netif loopback"
-            default n
-
-        config LWIP_NETIF_LOOPBACK
-            int
-            default 1 if RT_LWIP_NETIF_LOOPBACK
-            default 0 if !RT_LWIP_NETIF_LOOPBACK
-
-        config RT_LWIP_STATS
-            bool "Enable lwIP statistics"
-            default n
-
-        config RT_LWIP_USING_HW_CHECKSUM
-            bool "Enable hardware checksum"
-            default n
-
-        config RT_LWIP_USING_PING
-            bool "Enable ping features"
-            default y
-            select NETDEV_USING_PING
-            select RT_LWIP_ICMP
-            select RT_LWIP_RAW
-
-        menuconfig RT_LWIP_DEBUG
-            bool "Enable lwIP Debugging Options"
-            default n
-
-        if RT_LWIP_DEBUG
-
-            config RT_LWIP_SYS_DEBUG
-                bool "Enable Debugging of sys.c"
-                default n
-
-            config RT_LWIP_ETHARP_DEBUG
-                bool "Enable Debugging of etharp.c"
-                default n
-
-            config RT_LWIP_PPP_DEBUG
-                bool "Enable Debugging of PPP"
-                default n
-
-            config RT_LWIP_MEM_DEBUG
-                bool "Enable Debugging of mem.c"
-                default n
-
-            config RT_LWIP_MEMP_DEBUG
-                bool "Enable Debugging of memp.c"
-                default n
-
-            config RT_LWIP_PBUF_DEBUG
-                bool "Enable Debugging of pbuf.c"
-                default n
-
-            config RT_LWIP_API_LIB_DEBUG
-                bool "Enable Debugging of api_lib.c"
-                default n
-
-            config RT_LWIP_API_MSG_DEBUG
-                bool "Enable Debugging of api_msg.c"
-                default n
-
-            config RT_LWIP_TCPIP_DEBUG
-                bool "Enable Debugging of tcpip.c"
-                default n
-
-            config RT_LWIP_NETIF_DEBUG
-                bool "Enable Debugging of netif.c"
-                default n
-
-            config RT_LWIP_SOCKETS_DEBUG
-                bool "Enable Debugging of sockets.c"
-                default n
-
-            config RT_LWIP_DNS_DEBUG
-                bool "Enable Debugging of DNS"
-                default n
-
-            config RT_LWIP_AUTOIP_DEBUG
-                bool "Enable Debugging of autoip.c"
-                default n
-
-            config RT_LWIP_DHCP_DEBUG
-                bool "Enable Debugging of dhcp.c"
-                default n
-
-            config RT_LWIP_IP_DEBUG
-                bool "Enable Debugging of IP"
-                default n
-
-            config RT_LWIP_IP_REASS_DEBUG
-                bool "Enable debugging in ip_frag.c for both frag & reass"
-                default n
-
-            config RT_LWIP_ICMP_DEBUG
-                bool "Enable Debugging of icmp.c"
-                default n
-
-            config RT_LWIP_IGMP_DEBUG
-                bool "Enable Debugging of igmp.c"
-                default n
-
-            config RT_LWIP_UDP_DEBUG
-                bool "Enable Debugging of UDP"
-                default n
-
-            config RT_LWIP_TCP_DEBUG
-                bool "Enable Debugging of TCP"
-                default n
-
-            config RT_LWIP_TCP_INPUT_DEBUG
-                bool "Enable Debugging of tcp_in.c"
-                default n
-
-            config RT_LWIP_TCP_OUTPUT_DEBUG
-                bool "Enable Debugging of tcp_out.c"
-                default n
-
-            config RT_LWIP_TCP_RTO_DEBUG
-                bool "Enable debugging in TCP for retransmit"
-                default n
-
-            config RT_LWIP_TCP_CWND_DEBUG
-                bool "Enable debugging for TCP congestion window"
-                default n
-
-            config RT_LWIP_TCP_WND_DEBUG
-                bool "Enable debugging in tcp_in.c for window updating"
-                default n
-
-            config RT_LWIP_TCP_FR_DEBUG
-                bool "Enable debugging in tcp_in.c for fast retransmit"
-                default n
-
-            config RT_LWIP_TCP_QLEN_DEBUG
-                bool "Enable debugging for TCP queue lengths"
-                default n
-
-            config RT_LWIP_TCP_RST_DEBUG
-                bool "Enable debugging for TCP with the RST message"
-                default n
-
-        endif
-
-    endif
-
-endmenu
-
+source "$RTT_DIR/components/net/sal/Kconfig"
+source "$RTT_DIR/components/net/netdev/Kconfig"
+source "$RTT_DIR/components/net/lwip/Kconfig"
 source "$RTT_DIR/components/net/at/Kconfig"
 
-if RT_USING_LWIP
-
-config LWIP_USING_DHCPD
-    bool "Enable DHCP server"
-    default n
-
-    if LWIP_USING_DHCPD
-        config DHCPD_SERVER_IP
-            string "DHCPD SERVER IP address"
-            default 192.168.169.1
-
-        config DHCPD_USING_ROUTER
-            bool "alloc gateway ip for router"
-            default y
-
-        config LWIP_USING_CUSTOMER_DNS_SERVER
-            bool "Enable customer DNS server config"
-            default n
-        if LWIP_USING_CUSTOMER_DNS_SERVER
-            config DHCP_DNS_SERVER_IP
-                string "Custom DNS server IP address"
-                default 1.1.1.1
-        endif
-    endif
-
-endif
-
 endmenu
diff --git a/components/net/SConscript b/components/net/SConscript
index 031e92284c..4a03662ee6 100644
--- a/components/net/SConscript
+++ b/components/net/SConscript
@@ -1,6 +1,5 @@
 # for network related component
 import os
-Import('RTT_ROOT')
 from building import *
 
 objs = []
diff --git a/components/net/at/Kconfig b/components/net/at/Kconfig
index 6cf7fdade6..a1bc7ce066 100644
--- a/components/net/at/Kconfig
+++ b/components/net/at/Kconfig
@@ -1,6 +1,4 @@
-menu "AT commands"
-
-config RT_USING_AT
+menuconfig RT_USING_AT
     bool "Enable AT commands"
     default n
 
@@ -87,5 +85,3 @@ if RT_USING_AT
             software module version number
 
 endif
-
-endmenu
diff --git a/components/net/lwip-2.1.2/CMakeLists.txt b/components/net/lwip-2.1.2/CMakeLists.txt
deleted file mode 100644
index f05c0f6160..0000000000
--- a/components/net/lwip-2.1.2/CMakeLists.txt
+++ /dev/null
@@ -1,20 +0,0 @@
-cmake_minimum_required(VERSION 3.7)
-
-project(lwIP)
-
-set(LWIP_DIR ${CMAKE_CURRENT_SOURCE_DIR})
-include(src/Filelists.cmake)
-
-# Package generation
-set(CPACK_SOURCE_GENERATOR "ZIP")
-set(CPACK_SOURCE_PACKAGE_DESCRIPTION_SUMMARY "lwIP lightweight IP stack")
-set(CPACK_PACKAGE_VERSION_MAJOR "${LWIP_VERSION_MAJOR}")
-set(CPACK_PACKAGE_VERSION_MINOR "${LWIP_VERSION_MINOR}")
-set(CPACK_PACKAGE_VERSION_PATCH "${LWIP_VERSION_REVISION}")
-set(CPACK_SOURCE_IGNORE_FILES "/build/;${CPACK_SOURCE_IGNORE_FILES};.git")
-set(CPACK_SOURCE_PACKAGE_FILE_NAME "lwip-${LWIP_VERSION_MAJOR}.${LWIP_VERSION_MINOR}.${LWIP_VERSION_REVISION}")
-include(CPack)
-
-# Target for package generation
-add_custom_target(dist COMMAND ${CMAKE_MAKE_PROGRAM} package_source)
-add_dependencies(dist lwipdocs)
diff --git a/components/net/lwip_dhcpd/SConscript b/components/net/lwip-dhcpd/SConscript
similarity index 100%
rename from components/net/lwip_dhcpd/SConscript
rename to components/net/lwip-dhcpd/SConscript
diff --git a/components/net/lwip_dhcpd/dhcp_server.c b/components/net/lwip-dhcpd/dhcp_server.c
similarity index 100%
rename from components/net/lwip_dhcpd/dhcp_server.c
rename to components/net/lwip-dhcpd/dhcp_server.c
diff --git a/components/net/lwip_dhcpd/dhcp_server.h b/components/net/lwip-dhcpd/dhcp_server.h
similarity index 100%
rename from components/net/lwip_dhcpd/dhcp_server.h
rename to components/net/lwip-dhcpd/dhcp_server.h
diff --git a/components/net/lwip_dhcpd/dhcp_server_raw.c b/components/net/lwip-dhcpd/dhcp_server_raw.c
similarity index 100%
rename from components/net/lwip_dhcpd/dhcp_server_raw.c
rename to components/net/lwip-dhcpd/dhcp_server_raw.c
diff --git a/components/net/lwip_nat/README.md b/components/net/lwip-nat/README.md
similarity index 100%
rename from components/net/lwip_nat/README.md
rename to components/net/lwip-nat/README.md
diff --git a/components/net/lwip_nat/SConscript b/components/net/lwip-nat/SConscript
similarity index 100%
rename from components/net/lwip_nat/SConscript
rename to components/net/lwip-nat/SConscript
diff --git a/components/net/lwip_nat/ipv4_nat.c b/components/net/lwip-nat/ipv4_nat.c
similarity index 100%
rename from components/net/lwip_nat/ipv4_nat.c
rename to components/net/lwip-nat/ipv4_nat.c
diff --git a/components/net/lwip_nat/ipv4_nat.h b/components/net/lwip-nat/ipv4_nat.h
similarity index 100%
rename from components/net/lwip_nat/ipv4_nat.h
rename to components/net/lwip-nat/ipv4_nat.h
diff --git a/components/net/.ignore_format.yml b/components/net/lwip/.ignore_format.yml
similarity index 95%
rename from components/net/.ignore_format.yml
rename to components/net/lwip/.ignore_format.yml
index 20c40e6436..7ec1550bdf 100644
--- a/components/net/.ignore_format.yml
+++ b/components/net/lwip/.ignore_format.yml
@@ -4,6 +4,5 @@
 
 dir_path:
 - lwip-1.4.1
-- lwip-2.0.2
 - lwip-2.0.3
 - lwip-2.1.2
diff --git a/components/net/lwip/Kconfig b/components/net/lwip/Kconfig
new file mode 100644
index 0000000000..dce5a74a52
--- /dev/null
+++ b/components/net/lwip/Kconfig
@@ -0,0 +1,378 @@
+menuconfig RT_USING_LWIP 
+    bool "Enable light weight TCP/IP stack (lwIP)"
+    select RT_USING_DEVICE
+    default n
+
+if RT_USING_LWIP
+    choice
+        prompt "lwIP version"
+        default RT_USING_LWIP203
+        help
+            Select the lwIP version
+
+        config RT_USING_LWIP141
+            bool "lwIP v1.4.1"
+
+        config RT_USING_LWIP203
+            bool "lwIP v2.0.3"
+
+        config RT_USING_LWIP212
+            bool "lwIP v2.1.2"
+
+    endchoice
+
+    if (RT_USING_LWIP203 || RT_USING_LWIP212)
+        config RT_USING_LWIP_IPV6
+            bool "IPV6 protocol"
+            default n
+            select NETDEV_USING_IPV6
+            select NETDEV_IPV6_SCOPES if RT_USING_LWIP212
+    endif
+
+    config RT_LWIP_MEM_ALIGNMENT
+        int "Memory alignment"
+        default 8 if ARCH_CPU_64BIT
+        default 4
+
+    config RT_LWIP_IGMP
+        bool "IGMP protocol"
+        default y
+
+    config RT_LWIP_ICMP
+        bool "ICMP protocol"
+        default y
+
+    config RT_LWIP_SNMP
+        bool "SNMP protocol"
+        select RT_LWIP_STATS
+        default n
+
+    config RT_LWIP_DNS
+        bool "Enble DNS for name resolution"
+        select RT_LWIP_UDP
+        default y
+
+    config RT_LWIP_DHCP
+        bool "Enable alloc ip address through DHCP"
+        select RT_LWIP_UDP
+        default y
+
+        if RT_LWIP_DHCP
+            config IP_SOF_BROADCAST
+                int "SOF broadcast"
+                default 1
+
+            config IP_SOF_BROADCAST_RECV
+                int "SOF broadcast recv"
+                default 1
+        endif
+
+    menu "Static IPv4 Address"
+            config RT_LWIP_IPADDR
+                string "IPv4: IP address"
+                default 192.168.1.30
+
+            config RT_LWIP_GWADDR
+                string "IPv4: Gateway address"
+                default 192.168.1.1
+
+            config RT_LWIP_MSKADDR
+                string "IPv4: Mask address"
+                default 255.255.255.0
+    endmenu
+
+    config RT_LWIP_UDP
+        bool "UDP protocol"
+        default y
+
+    config RT_LWIP_TCP
+        bool "TCP protocol"
+        default y
+
+    config RT_LWIP_RAW
+        bool "RAW protocol"
+        default n
+
+    config RT_LWIP_PPP
+        bool "PPP protocol"
+        default n
+
+    if RT_LWIP_PPP
+        config RT_LWIP_PPPOE
+            bool "PPPoE protocol"
+            default n
+
+        config RT_LWIP_PPPOS
+            bool "PPPoS protocol"
+            default n
+    endif
+
+    config RT_MEMP_NUM_NETCONN
+        int "the number of struct netconns"
+        default 8
+
+    config RT_LWIP_PBUF_NUM
+        int "the number of PBUF"
+        default 16
+
+    config RT_LWIP_RAW_PCB_NUM
+        int "the number of raw connection"
+        default 4
+
+    config RT_LWIP_UDP_PCB_NUM
+        int "the number of UDP socket"
+        default 8 if RT_USING_DFS_NFS
+        default 4
+
+    if RT_LWIP_TCP
+    config RT_LWIP_TCP_PCB_NUM
+        int "the number of TCP socket"
+        default 4
+
+    config RT_LWIP_TCP_SEG_NUM
+        int "the number of TCP segment"
+        default 40
+
+    config RT_LWIP_TCP_SND_BUF
+        int "the size of send buffer"
+        default 8196
+
+    config RT_LWIP_TCP_WND
+        int "the size of TCP send window"
+        default 8196
+    endif
+
+    config RT_LWIP_TCPTHREAD_PRIORITY
+        int "the priority level value of lwIP thread"
+        default 10
+
+    config RT_LWIP_TCPTHREAD_MBOX_SIZE
+        int "the number of mail in the lwIP thread mailbox"
+        default 8
+
+    config RT_LWIP_TCPTHREAD_STACKSIZE
+        int "the stack size of lwIP thread"
+        default 2048 if ARCH_CPU_64BIT
+        default 1024
+
+    config LWIP_NO_RX_THREAD
+        bool "Not use Rx thread"
+        default n
+
+    config LWIP_NO_TX_THREAD
+        bool "Not use Tx thread"
+        default n
+
+    config RT_LWIP_ETHTHREAD_PRIORITY
+        int "the priority level value of ethernet thread"
+        default 12
+
+    config RT_LWIP_ETHTHREAD_STACKSIZE
+        int "the stack size of ethernet thread"
+        default 2048 if ARCH_CPU_64BIT
+        default 1024
+
+    config RT_LWIP_ETHTHREAD_MBOX_SIZE
+        int "the number of mail in the ethernet thread mailbox"
+        default 8
+
+    config RT_LWIP_REASSEMBLY_FRAG
+        bool "Enable IP reassembly and frag"
+        default n
+
+    config LWIP_NETIF_STATUS_CALLBACK
+        int "Enable netif status callback"
+        default 1
+
+    config LWIP_NETIF_LINK_CALLBACK
+        int "Enable netif link status callback"
+        default 1
+
+    config SO_REUSE
+        int "Enable SO_REUSEADDR option"
+        default 1
+
+    config LWIP_SO_RCVTIMEO
+        int "Enable receive timeout for sockets/netconns and SO_RCVTIMEO processing."
+        default 1
+
+    config LWIP_SO_SNDTIMEO
+        int "Enable send timeout for sockets/netconns and SO_SNDTIMEO processing."
+        default 1
+
+    config LWIP_SO_RCVBUF
+        int "Enable SO_RCVBUF processing"
+        default 1
+
+    config LWIP_SO_LINGER
+        int "Enable SO_LINGER processing"
+        default 0
+
+    config RT_LWIP_NETIF_LOOPBACK
+        bool "Enable netif loopback"
+        default n
+
+    config LWIP_NETIF_LOOPBACK
+        int
+        default 1 if RT_LWIP_NETIF_LOOPBACK
+        default 0 if !RT_LWIP_NETIF_LOOPBACK
+
+    config RT_LWIP_STATS
+        bool "Enable lwIP statistics"
+        default n
+
+    config RT_LWIP_USING_HW_CHECKSUM
+        bool "Enable hardware checksum"
+        default n
+
+    config RT_LWIP_USING_PING
+        bool "Enable ping features"
+        default y
+        select NETDEV_USING_PING
+        select RT_LWIP_ICMP
+        select RT_LWIP_RAW
+
+    config LWIP_USING_DHCPD
+        bool "Enable DHCP server"
+        default n
+
+    if LWIP_USING_DHCPD
+        config DHCPD_SERVER_IP
+            string "DHCPD SERVER IP address"
+            default 192.168.169.1
+
+        config DHCPD_USING_ROUTER
+            bool "alloc gateway ip for router"
+            default y
+
+        config LWIP_USING_CUSTOMER_DNS_SERVER
+            bool "Enable customer DNS server config"
+            default n
+        if LWIP_USING_CUSTOMER_DNS_SERVER
+            config DHCP_DNS_SERVER_IP
+                string "Custom DNS server IP address"
+                default 1.1.1.1
+        endif
+    endif
+
+    menuconfig RT_LWIP_DEBUG
+        bool "Enable lwIP Debugging Options"
+        default n
+
+    if RT_LWIP_DEBUG
+
+        config RT_LWIP_SYS_DEBUG
+            bool "Enable Debugging of sys.c"
+            default n
+
+        config RT_LWIP_ETHARP_DEBUG
+            bool "Enable Debugging of etharp.c"
+            default n
+
+        config RT_LWIP_PPP_DEBUG
+            bool "Enable Debugging of PPP"
+            default n
+
+        config RT_LWIP_MEM_DEBUG
+            bool "Enable Debugging of mem.c"
+            default n
+
+        config RT_LWIP_MEMP_DEBUG
+            bool "Enable Debugging of memp.c"
+            default n
+
+        config RT_LWIP_PBUF_DEBUG
+            bool "Enable Debugging of pbuf.c"
+            default n
+
+        config RT_LWIP_API_LIB_DEBUG
+            bool "Enable Debugging of api_lib.c"
+            default n
+
+        config RT_LWIP_API_MSG_DEBUG
+            bool "Enable Debugging of api_msg.c"
+            default n
+
+        config RT_LWIP_TCPIP_DEBUG
+            bool "Enable Debugging of tcpip.c"
+            default n
+
+        config RT_LWIP_NETIF_DEBUG
+            bool "Enable Debugging of netif.c"
+            default n
+
+        config RT_LWIP_SOCKETS_DEBUG
+            bool "Enable Debugging of sockets.c"
+            default n
+
+        config RT_LWIP_DNS_DEBUG
+            bool "Enable Debugging of DNS"
+            default n
+
+        config RT_LWIP_AUTOIP_DEBUG
+            bool "Enable Debugging of autoip.c"
+            default n
+
+        config RT_LWIP_DHCP_DEBUG
+            bool "Enable Debugging of dhcp.c"
+            default n
+
+        config RT_LWIP_IP_DEBUG
+            bool "Enable Debugging of IP"
+            default n
+
+        config RT_LWIP_IP_REASS_DEBUG
+            bool "Enable debugging in ip_frag.c for both frag & reass"
+            default n
+
+        config RT_LWIP_ICMP_DEBUG
+            bool "Enable Debugging of icmp.c"
+            default n
+
+        config RT_LWIP_IGMP_DEBUG
+            bool "Enable Debugging of igmp.c"
+            default n
+
+        config RT_LWIP_UDP_DEBUG
+            bool "Enable Debugging of UDP"
+            default n
+
+        config RT_LWIP_TCP_DEBUG
+            bool "Enable Debugging of TCP"
+            default n
+
+        config RT_LWIP_TCP_INPUT_DEBUG
+            bool "Enable Debugging of tcp_in.c"
+            default n
+
+        config RT_LWIP_TCP_OUTPUT_DEBUG
+            bool "Enable Debugging of tcp_out.c"
+            default n
+
+        config RT_LWIP_TCP_RTO_DEBUG
+            bool "Enable debugging in TCP for retransmit"
+            default n
+
+        config RT_LWIP_TCP_CWND_DEBUG
+            bool "Enable debugging for TCP congestion window"
+            default n
+
+        config RT_LWIP_TCP_WND_DEBUG
+            bool "Enable debugging in tcp_in.c for window updating"
+            default n
+
+        config RT_LWIP_TCP_FR_DEBUG
+            bool "Enable debugging in tcp_in.c for fast retransmit"
+            default n
+
+        config RT_LWIP_TCP_QLEN_DEBUG
+            bool "Enable debugging for TCP queue lengths"
+            default n
+
+        config RT_LWIP_TCP_RST_DEBUG
+            bool "Enable debugging for TCP with the RST message"
+            default n
+
+    endif
+
+endif
diff --git a/components/net/lwip/SConscript b/components/net/lwip/SConscript
new file mode 100644
index 0000000000..4a03662ee6
--- /dev/null
+++ b/components/net/lwip/SConscript
@@ -0,0 +1,14 @@
+# for network related component
+import os
+from building import *
+
+objs = []
+cwd = GetCurrentDir()
+list = os.listdir(cwd)
+
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        objs = objs + SConscript(os.path.join(d, 'SConscript'))
+
+Return('objs')
diff --git a/components/net/lwip-1.4.1/CHANGELOG b/components/net/lwip/lwip-1.4.1/CHANGELOG
similarity index 99%
rename from components/net/lwip-1.4.1/CHANGELOG
rename to components/net/lwip/lwip-1.4.1/CHANGELOG
index af68299edc..c502b0039c 100644
--- a/components/net/lwip-1.4.1/CHANGELOG
+++ b/components/net/lwip/lwip-1.4.1/CHANGELOG
@@ -6,16 +6,6 @@ HISTORY
 
  ++ New features:
 
-
- ++ Bugfixes:
-
-
-
-
-(STABLE-1.4.1)
-
-  ++ New features:
-
   2012-03-25: Simon Goldschmidt (idea by Mason)
   * posix/*: added posix-compatibility include files posix/netdb.h and posix/sys/socket.h
     which are a simple wrapper to the correct lwIP include files.
diff --git a/components/net/lwip-1.4.1/COPYING b/components/net/lwip/lwip-1.4.1/COPYING
similarity index 100%
rename from components/net/lwip-1.4.1/COPYING
rename to components/net/lwip/lwip-1.4.1/COPYING
diff --git a/components/net/lwip-1.4.1/FILES b/components/net/lwip/lwip-1.4.1/FILES
similarity index 100%
rename from components/net/lwip-1.4.1/FILES
rename to components/net/lwip/lwip-1.4.1/FILES
diff --git a/components/net/lwip-1.4.1/README b/components/net/lwip/lwip-1.4.1/README
similarity index 100%
rename from components/net/lwip-1.4.1/README
rename to components/net/lwip/lwip-1.4.1/README
diff --git a/components/net/lwip-1.4.1/READTEST.md b/components/net/lwip/lwip-1.4.1/README.md
similarity index 99%
rename from components/net/lwip-1.4.1/READTEST.md
rename to components/net/lwip/lwip-1.4.1/README.md
index 05f10dc780..d8a5ceced2 100644
--- a/components/net/lwip-1.4.1/READTEST.md
+++ b/components/net/lwip/lwip-1.4.1/README.md
@@ -3,10 +3,11 @@ The major jobs following RT-Thread Team. The RT-Thread network interface device
 The specific changes are as follows:
 
  - netif.c: add RT-Thread netdev header file , status synchronize(UP, LINK_UP), address synchronize(IP, netmask, gateway);
- 
+
  - dns.c: add RT-Thread header file, dns servers synchronize;
- 
+
  - sockets.c: custom 'select' function implementation in RT-Thread by the wait queue mode.
- 
+
 by ChenYong 2019/3/26 10:00 AM
 chenyong@rt-thread.com
+
diff --git a/components/net/lwip-1.4.1/SConscript b/components/net/lwip/lwip-1.4.1/SConscript
similarity index 100%
rename from components/net/lwip-1.4.1/SConscript
rename to components/net/lwip/lwip-1.4.1/SConscript
diff --git a/components/net/lwip-1.4.1/UPGRADING b/components/net/lwip/lwip-1.4.1/UPGRADING
similarity index 100%
rename from components/net/lwip-1.4.1/UPGRADING
rename to components/net/lwip/lwip-1.4.1/UPGRADING
diff --git a/components/net/lwip-1.4.1/doc/FILES b/components/net/lwip/lwip-1.4.1/doc/FILES
similarity index 100%
rename from components/net/lwip-1.4.1/doc/FILES
rename to components/net/lwip/lwip-1.4.1/doc/FILES
diff --git a/components/net/lwip-1.4.1/doc/contrib.txt b/components/net/lwip/lwip-1.4.1/doc/contrib.txt
similarity index 100%
rename from components/net/lwip-1.4.1/doc/contrib.txt
rename to components/net/lwip/lwip-1.4.1/doc/contrib.txt
diff --git a/components/net/lwip-1.4.1/doc/rawapi.txt b/components/net/lwip/lwip-1.4.1/doc/rawapi.txt
similarity index 100%
rename from components/net/lwip-1.4.1/doc/rawapi.txt
rename to components/net/lwip/lwip-1.4.1/doc/rawapi.txt
diff --git a/components/net/lwip-1.4.1/doc/savannah.txt b/components/net/lwip/lwip-1.4.1/doc/savannah.txt
similarity index 100%
rename from components/net/lwip-1.4.1/doc/savannah.txt
rename to components/net/lwip/lwip-1.4.1/doc/savannah.txt
diff --git a/components/net/lwip-1.4.1/doc/snmp_agent.txt b/components/net/lwip/lwip-1.4.1/doc/snmp_agent.txt
similarity index 100%
rename from components/net/lwip-1.4.1/doc/snmp_agent.txt
rename to components/net/lwip/lwip-1.4.1/doc/snmp_agent.txt
diff --git a/components/net/lwip-1.4.1/doc/sys_arch.txt b/components/net/lwip/lwip-1.4.1/doc/sys_arch.txt
similarity index 100%
rename from components/net/lwip-1.4.1/doc/sys_arch.txt
rename to components/net/lwip/lwip-1.4.1/doc/sys_arch.txt
diff --git a/components/net/lwip-1.4.1/src/FILES b/components/net/lwip/lwip-1.4.1/src/FILES
similarity index 100%
rename from components/net/lwip-1.4.1/src/FILES
rename to components/net/lwip/lwip-1.4.1/src/FILES
diff --git a/components/net/lwip-1.4.1/src/api/api_lib.c b/components/net/lwip/lwip-1.4.1/src/api/api_lib.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/api/api_lib.c
rename to components/net/lwip/lwip-1.4.1/src/api/api_lib.c
diff --git a/components/net/lwip-1.4.1/src/api/api_msg.c b/components/net/lwip/lwip-1.4.1/src/api/api_msg.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/api/api_msg.c
rename to components/net/lwip/lwip-1.4.1/src/api/api_msg.c
diff --git a/components/net/lwip-1.4.1/src/api/err.c b/components/net/lwip/lwip-1.4.1/src/api/err.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/api/err.c
rename to components/net/lwip/lwip-1.4.1/src/api/err.c
diff --git a/components/net/lwip-1.4.1/src/api/netbuf.c b/components/net/lwip/lwip-1.4.1/src/api/netbuf.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/api/netbuf.c
rename to components/net/lwip/lwip-1.4.1/src/api/netbuf.c
diff --git a/components/net/lwip-1.4.1/src/api/netdb.c b/components/net/lwip/lwip-1.4.1/src/api/netdb.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/api/netdb.c
rename to components/net/lwip/lwip-1.4.1/src/api/netdb.c
diff --git a/components/net/lwip-1.4.1/src/api/netifapi.c b/components/net/lwip/lwip-1.4.1/src/api/netifapi.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/api/netifapi.c
rename to components/net/lwip/lwip-1.4.1/src/api/netifapi.c
diff --git a/components/net/lwip-1.4.1/src/api/sockets.c b/components/net/lwip/lwip-1.4.1/src/api/sockets.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/api/sockets.c
rename to components/net/lwip/lwip-1.4.1/src/api/sockets.c
diff --git a/components/net/lwip-1.4.1/src/api/tcpip.c b/components/net/lwip/lwip-1.4.1/src/api/tcpip.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/api/tcpip.c
rename to components/net/lwip/lwip-1.4.1/src/api/tcpip.c
diff --git a/components/net/lwip-1.4.1/src/apps/ping/ping.c b/components/net/lwip/lwip-1.4.1/src/apps/ping/ping.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/apps/ping/ping.c
rename to components/net/lwip/lwip-1.4.1/src/apps/ping/ping.c
diff --git a/components/net/lwip-1.4.1/src/arch/include/arch/bpstruct.h b/components/net/lwip/lwip-1.4.1/src/arch/include/arch/bpstruct.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/arch/include/arch/bpstruct.h
rename to components/net/lwip/lwip-1.4.1/src/arch/include/arch/bpstruct.h
diff --git a/components/net/lwip-1.4.1/src/arch/include/arch/cc.h b/components/net/lwip/lwip-1.4.1/src/arch/include/arch/cc.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/arch/include/arch/cc.h
rename to components/net/lwip/lwip-1.4.1/src/arch/include/arch/cc.h
diff --git a/components/net/lwip-1.4.1/src/arch/include/arch/epstruct.h b/components/net/lwip/lwip-1.4.1/src/arch/include/arch/epstruct.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/arch/include/arch/epstruct.h
rename to components/net/lwip/lwip-1.4.1/src/arch/include/arch/epstruct.h
diff --git a/components/net/lwip-1.4.1/src/arch/include/arch/perf.h b/components/net/lwip/lwip-1.4.1/src/arch/include/arch/perf.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/arch/include/arch/perf.h
rename to components/net/lwip/lwip-1.4.1/src/arch/include/arch/perf.h
diff --git a/components/net/lwip-1.4.1/src/arch/include/arch/sys_arch.h b/components/net/lwip/lwip-1.4.1/src/arch/include/arch/sys_arch.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/arch/include/arch/sys_arch.h
rename to components/net/lwip/lwip-1.4.1/src/arch/include/arch/sys_arch.h
diff --git a/components/net/lwip-1.4.1/src/arch/sys_arch.c b/components/net/lwip/lwip-1.4.1/src/arch/sys_arch.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/arch/sys_arch.c
rename to components/net/lwip/lwip-1.4.1/src/arch/sys_arch.c
diff --git a/components/net/lwip-1.4.1/src/core/def.c b/components/net/lwip/lwip-1.4.1/src/core/def.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/def.c
rename to components/net/lwip/lwip-1.4.1/src/core/def.c
diff --git a/components/net/lwip-1.4.1/src/core/dhcp.c b/components/net/lwip/lwip-1.4.1/src/core/dhcp.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/dhcp.c
rename to components/net/lwip/lwip-1.4.1/src/core/dhcp.c
diff --git a/components/net/lwip-1.4.1/src/core/dns.c b/components/net/lwip/lwip-1.4.1/src/core/dns.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/dns.c
rename to components/net/lwip/lwip-1.4.1/src/core/dns.c
diff --git a/components/net/lwip-1.4.1/src/core/init.c b/components/net/lwip/lwip-1.4.1/src/core/init.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/init.c
rename to components/net/lwip/lwip-1.4.1/src/core/init.c
diff --git a/components/net/lwip-1.4.1/src/core/ipv4/autoip.c b/components/net/lwip/lwip-1.4.1/src/core/ipv4/autoip.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/ipv4/autoip.c
rename to components/net/lwip/lwip-1.4.1/src/core/ipv4/autoip.c
diff --git a/components/net/lwip-1.4.1/src/core/ipv4/icmp.c b/components/net/lwip/lwip-1.4.1/src/core/ipv4/icmp.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/ipv4/icmp.c
rename to components/net/lwip/lwip-1.4.1/src/core/ipv4/icmp.c
diff --git a/components/net/lwip-1.4.1/src/core/ipv4/igmp.c b/components/net/lwip/lwip-1.4.1/src/core/ipv4/igmp.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/ipv4/igmp.c
rename to components/net/lwip/lwip-1.4.1/src/core/ipv4/igmp.c
diff --git a/components/net/lwip-1.4.1/src/core/ipv4/inet.c b/components/net/lwip/lwip-1.4.1/src/core/ipv4/inet.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/ipv4/inet.c
rename to components/net/lwip/lwip-1.4.1/src/core/ipv4/inet.c
diff --git a/components/net/lwip-1.4.1/src/core/ipv4/inet_chksum.c b/components/net/lwip/lwip-1.4.1/src/core/ipv4/inet_chksum.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/ipv4/inet_chksum.c
rename to components/net/lwip/lwip-1.4.1/src/core/ipv4/inet_chksum.c
diff --git a/components/net/lwip-1.4.1/src/core/ipv4/ip.c b/components/net/lwip/lwip-1.4.1/src/core/ipv4/ip.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/ipv4/ip.c
rename to components/net/lwip/lwip-1.4.1/src/core/ipv4/ip.c
diff --git a/components/net/lwip-1.4.1/src/core/ipv4/ip_addr.c b/components/net/lwip/lwip-1.4.1/src/core/ipv4/ip_addr.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/ipv4/ip_addr.c
rename to components/net/lwip/lwip-1.4.1/src/core/ipv4/ip_addr.c
diff --git a/components/net/lwip-1.4.1/src/core/ipv4/ip_frag.c b/components/net/lwip/lwip-1.4.1/src/core/ipv4/ip_frag.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/ipv4/ip_frag.c
rename to components/net/lwip/lwip-1.4.1/src/core/ipv4/ip_frag.c
diff --git a/components/net/lwip-1.4.1/src/core/ipv6/README b/components/net/lwip/lwip-1.4.1/src/core/ipv6/README
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/ipv6/README
rename to components/net/lwip/lwip-1.4.1/src/core/ipv6/README
diff --git a/components/net/lwip-1.4.1/src/core/ipv6/icmp6.c b/components/net/lwip/lwip-1.4.1/src/core/ipv6/icmp6.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/ipv6/icmp6.c
rename to components/net/lwip/lwip-1.4.1/src/core/ipv6/icmp6.c
diff --git a/components/net/lwip-1.4.1/src/core/ipv6/inet6.c b/components/net/lwip/lwip-1.4.1/src/core/ipv6/inet6.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/ipv6/inet6.c
rename to components/net/lwip/lwip-1.4.1/src/core/ipv6/inet6.c
diff --git a/components/net/lwip-1.4.1/src/core/ipv6/ip6.c b/components/net/lwip/lwip-1.4.1/src/core/ipv6/ip6.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/ipv6/ip6.c
rename to components/net/lwip/lwip-1.4.1/src/core/ipv6/ip6.c
diff --git a/components/net/lwip-1.4.1/src/core/ipv6/ip6_addr.c b/components/net/lwip/lwip-1.4.1/src/core/ipv6/ip6_addr.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/ipv6/ip6_addr.c
rename to components/net/lwip/lwip-1.4.1/src/core/ipv6/ip6_addr.c
diff --git a/components/net/lwip-1.4.1/src/core/mem.c b/components/net/lwip/lwip-1.4.1/src/core/mem.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/mem.c
rename to components/net/lwip/lwip-1.4.1/src/core/mem.c
diff --git a/components/net/lwip-1.4.1/src/core/memp.c b/components/net/lwip/lwip-1.4.1/src/core/memp.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/memp.c
rename to components/net/lwip/lwip-1.4.1/src/core/memp.c
diff --git a/components/net/lwip-1.4.1/src/core/netif.c b/components/net/lwip/lwip-1.4.1/src/core/netif.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/netif.c
rename to components/net/lwip/lwip-1.4.1/src/core/netif.c
diff --git a/components/net/lwip-1.4.1/src/core/pbuf.c b/components/net/lwip/lwip-1.4.1/src/core/pbuf.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/pbuf.c
rename to components/net/lwip/lwip-1.4.1/src/core/pbuf.c
diff --git a/components/net/lwip-1.4.1/src/core/raw.c b/components/net/lwip/lwip-1.4.1/src/core/raw.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/raw.c
rename to components/net/lwip/lwip-1.4.1/src/core/raw.c
diff --git a/components/net/lwip-1.4.1/src/core/snmp/asn1_dec.c b/components/net/lwip/lwip-1.4.1/src/core/snmp/asn1_dec.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/snmp/asn1_dec.c
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diff --git a/components/net/lwip-1.4.1/src/core/snmp/asn1_enc.c b/components/net/lwip/lwip-1.4.1/src/core/snmp/asn1_enc.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/snmp/asn1_enc.c
rename to components/net/lwip/lwip-1.4.1/src/core/snmp/asn1_enc.c
diff --git a/components/net/lwip-1.4.1/src/core/snmp/mib2.c b/components/net/lwip/lwip-1.4.1/src/core/snmp/mib2.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/snmp/mib2.c
rename to components/net/lwip/lwip-1.4.1/src/core/snmp/mib2.c
diff --git a/components/net/lwip-1.4.1/src/core/snmp/mib_structs.c b/components/net/lwip/lwip-1.4.1/src/core/snmp/mib_structs.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/snmp/mib_structs.c
rename to components/net/lwip/lwip-1.4.1/src/core/snmp/mib_structs.c
diff --git a/components/net/lwip-1.4.1/src/core/snmp/msg_in.c b/components/net/lwip/lwip-1.4.1/src/core/snmp/msg_in.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/snmp/msg_in.c
rename to components/net/lwip/lwip-1.4.1/src/core/snmp/msg_in.c
diff --git a/components/net/lwip-1.4.1/src/core/snmp/msg_out.c b/components/net/lwip/lwip-1.4.1/src/core/snmp/msg_out.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/snmp/msg_out.c
rename to components/net/lwip/lwip-1.4.1/src/core/snmp/msg_out.c
diff --git a/components/net/lwip-1.4.1/src/core/stats.c b/components/net/lwip/lwip-1.4.1/src/core/stats.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/stats.c
rename to components/net/lwip/lwip-1.4.1/src/core/stats.c
diff --git a/components/net/lwip-1.4.1/src/core/sys.c b/components/net/lwip/lwip-1.4.1/src/core/sys.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/sys.c
rename to components/net/lwip/lwip-1.4.1/src/core/sys.c
diff --git a/components/net/lwip-1.4.1/src/core/tcp.c b/components/net/lwip/lwip-1.4.1/src/core/tcp.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/tcp.c
rename to components/net/lwip/lwip-1.4.1/src/core/tcp.c
diff --git a/components/net/lwip-1.4.1/src/core/tcp_in.c b/components/net/lwip/lwip-1.4.1/src/core/tcp_in.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/tcp_in.c
rename to components/net/lwip/lwip-1.4.1/src/core/tcp_in.c
diff --git a/components/net/lwip-1.4.1/src/core/tcp_out.c b/components/net/lwip/lwip-1.4.1/src/core/tcp_out.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/tcp_out.c
rename to components/net/lwip/lwip-1.4.1/src/core/tcp_out.c
diff --git a/components/net/lwip-1.4.1/src/core/timers.c b/components/net/lwip/lwip-1.4.1/src/core/timers.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/timers.c
rename to components/net/lwip/lwip-1.4.1/src/core/timers.c
diff --git a/components/net/lwip-1.4.1/src/core/udp.c b/components/net/lwip/lwip-1.4.1/src/core/udp.c
similarity index 100%
rename from components/net/lwip-1.4.1/src/core/udp.c
rename to components/net/lwip/lwip-1.4.1/src/core/udp.c
diff --git a/components/net/lwip-1.4.1/src/include/ipv4/lwip/autoip.h b/components/net/lwip/lwip-1.4.1/src/include/ipv4/lwip/autoip.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/include/ipv4/lwip/autoip.h
rename to components/net/lwip/lwip-1.4.1/src/include/ipv4/lwip/autoip.h
diff --git a/components/net/lwip-1.4.1/src/include/ipv4/lwip/icmp.h b/components/net/lwip/lwip-1.4.1/src/include/ipv4/lwip/icmp.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/include/ipv4/lwip/icmp.h
rename to components/net/lwip/lwip-1.4.1/src/include/ipv4/lwip/icmp.h
diff --git a/components/net/lwip-1.4.1/src/include/ipv4/lwip/igmp.h b/components/net/lwip/lwip-1.4.1/src/include/ipv4/lwip/igmp.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/include/ipv4/lwip/igmp.h
rename to components/net/lwip/lwip-1.4.1/src/include/ipv4/lwip/igmp.h
diff --git a/components/net/lwip-1.4.1/src/include/ipv4/lwip/inet.h b/components/net/lwip/lwip-1.4.1/src/include/ipv4/lwip/inet.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/include/ipv4/lwip/inet.h
rename to components/net/lwip/lwip-1.4.1/src/include/ipv4/lwip/inet.h
diff --git a/components/net/lwip-1.4.1/src/include/ipv4/lwip/inet_chksum.h b/components/net/lwip/lwip-1.4.1/src/include/ipv4/lwip/inet_chksum.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/include/ipv4/lwip/inet_chksum.h
rename to components/net/lwip/lwip-1.4.1/src/include/ipv4/lwip/inet_chksum.h
diff --git a/components/net/lwip-1.4.1/src/include/ipv4/lwip/ip.h b/components/net/lwip/lwip-1.4.1/src/include/ipv4/lwip/ip.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/include/ipv4/lwip/ip.h
rename to components/net/lwip/lwip-1.4.1/src/include/ipv4/lwip/ip.h
diff --git a/components/net/lwip-1.4.1/src/include/ipv4/lwip/ip_addr.h b/components/net/lwip/lwip-1.4.1/src/include/ipv4/lwip/ip_addr.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/include/ipv4/lwip/ip_addr.h
rename to components/net/lwip/lwip-1.4.1/src/include/ipv4/lwip/ip_addr.h
diff --git a/components/net/lwip-1.4.1/src/include/ipv4/lwip/ip_frag.h b/components/net/lwip/lwip-1.4.1/src/include/ipv4/lwip/ip_frag.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/include/ipv4/lwip/ip_frag.h
rename to components/net/lwip/lwip-1.4.1/src/include/ipv4/lwip/ip_frag.h
diff --git a/components/net/lwip-1.4.1/src/include/ipv6/lwip/icmp.h b/components/net/lwip/lwip-1.4.1/src/include/ipv6/lwip/icmp.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/include/ipv6/lwip/icmp.h
rename to components/net/lwip/lwip-1.4.1/src/include/ipv6/lwip/icmp.h
diff --git a/components/net/lwip-1.4.1/src/include/ipv6/lwip/inet.h b/components/net/lwip/lwip-1.4.1/src/include/ipv6/lwip/inet.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/include/ipv6/lwip/inet.h
rename to components/net/lwip/lwip-1.4.1/src/include/ipv6/lwip/inet.h
diff --git a/components/net/lwip-1.4.1/src/include/ipv6/lwip/ip.h b/components/net/lwip/lwip-1.4.1/src/include/ipv6/lwip/ip.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/include/ipv6/lwip/ip.h
rename to components/net/lwip/lwip-1.4.1/src/include/ipv6/lwip/ip.h
diff --git a/components/net/lwip-1.4.1/src/include/ipv6/lwip/ip_addr.h b/components/net/lwip/lwip-1.4.1/src/include/ipv6/lwip/ip_addr.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/include/ipv6/lwip/ip_addr.h
rename to components/net/lwip/lwip-1.4.1/src/include/ipv6/lwip/ip_addr.h
diff --git a/components/net/lwip-1.4.1/src/include/lwip/api.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/api.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/include/lwip/api.h
rename to components/net/lwip/lwip-1.4.1/src/include/lwip/api.h
diff --git a/components/net/lwip-1.4.1/src/include/lwip/api_msg.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/api_msg.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/include/lwip/api_msg.h
rename to components/net/lwip/lwip-1.4.1/src/include/lwip/api_msg.h
diff --git a/components/net/lwip-1.4.1/src/include/lwip/arch.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/arch.h
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rename from components/net/lwip-1.4.1/src/include/lwip/arch.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/debug.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/debug.h
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rename from components/net/lwip-1.4.1/src/include/lwip/debug.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/def.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/def.h
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rename from components/net/lwip-1.4.1/src/include/lwip/def.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/dhcp.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/dhcp.h
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rename from components/net/lwip-1.4.1/src/include/lwip/dhcp.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/dns.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/dns.h
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rename from components/net/lwip-1.4.1/src/include/lwip/dns.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/err.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/err.h
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rename from components/net/lwip-1.4.1/src/include/lwip/err.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/init.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/init.h
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rename from components/net/lwip-1.4.1/src/include/lwip/init.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/mem.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/mem.h
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rename from components/net/lwip-1.4.1/src/include/lwip/mem.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/memp.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/memp.h
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rename from components/net/lwip-1.4.1/src/include/lwip/memp.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/memp_std.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/memp_std.h
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rename from components/net/lwip-1.4.1/src/include/lwip/memp_std.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/netbuf.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/netbuf.h
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rename from components/net/lwip-1.4.1/src/include/lwip/netbuf.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/netdb.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/netdb.h
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rename from components/net/lwip-1.4.1/src/include/lwip/netdb.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/netif.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/netif.h
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rename from components/net/lwip-1.4.1/src/include/lwip/netif.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/netifapi.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/netifapi.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/include/lwip/netifapi.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/opt.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/opt.h
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rename from components/net/lwip-1.4.1/src/include/lwip/opt.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/pbuf.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/pbuf.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/include/lwip/pbuf.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/raw.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/raw.h
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rename from components/net/lwip-1.4.1/src/include/lwip/raw.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/sio.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/sio.h
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rename from components/net/lwip-1.4.1/src/include/lwip/sio.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/snmp.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/snmp.h
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rename from components/net/lwip-1.4.1/src/include/lwip/snmp.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/snmp_asn1.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/snmp_asn1.h
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rename from components/net/lwip-1.4.1/src/include/lwip/snmp_asn1.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/snmp_msg.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/snmp_msg.h
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rename from components/net/lwip-1.4.1/src/include/lwip/snmp_msg.h
rename to components/net/lwip/lwip-1.4.1/src/include/lwip/snmp_msg.h
diff --git a/components/net/lwip-1.4.1/src/include/lwip/snmp_structs.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/snmp_structs.h
similarity index 100%
rename from components/net/lwip-1.4.1/src/include/lwip/snmp_structs.h
rename to components/net/lwip/lwip-1.4.1/src/include/lwip/snmp_structs.h
diff --git a/components/net/lwip-1.4.1/src/include/lwip/sockets.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/sockets.h
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rename from components/net/lwip-1.4.1/src/include/lwip/sockets.h
rename to components/net/lwip/lwip-1.4.1/src/include/lwip/sockets.h
diff --git a/components/net/lwip-1.4.1/src/include/lwip/stats.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/stats.h
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rename from components/net/lwip-1.4.1/src/include/lwip/stats.h
rename to components/net/lwip/lwip-1.4.1/src/include/lwip/stats.h
diff --git a/components/net/lwip-1.4.1/src/include/lwip/sys.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/sys.h
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rename from components/net/lwip-1.4.1/src/include/lwip/sys.h
rename to components/net/lwip/lwip-1.4.1/src/include/lwip/sys.h
diff --git a/components/net/lwip-1.4.1/src/include/lwip/tcp.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/tcp.h
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rename from components/net/lwip-1.4.1/src/include/lwip/tcp.h
rename to components/net/lwip/lwip-1.4.1/src/include/lwip/tcp.h
diff --git a/components/net/lwip-1.4.1/src/include/lwip/tcp_impl.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/tcp_impl.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/tcpip.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/tcpip.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/timers.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/timers.h
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diff --git a/components/net/lwip-1.4.1/src/include/lwip/udp.h b/components/net/lwip/lwip-1.4.1/src/include/lwip/udp.h
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diff --git a/components/net/lwip-1.4.1/src/include/netif/etharp.h b/components/net/lwip/lwip-1.4.1/src/include/netif/etharp.h
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diff --git a/components/net/lwip-1.4.1/src/include/netif/ethernetif.h b/components/net/lwip/lwip-1.4.1/src/include/netif/ethernetif.h
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diff --git a/components/net/lwip-1.4.1/src/include/netif/ppp_oe.h b/components/net/lwip/lwip-1.4.1/src/include/netif/ppp_oe.h
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diff --git a/components/net/lwip-1.4.1/src/include/netif/slipif.h b/components/net/lwip/lwip-1.4.1/src/include/netif/slipif.h
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diff --git a/components/net/lwip-1.4.1/src/include/posix/netdb.h b/components/net/lwip/lwip-1.4.1/src/include/posix/netdb.h
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diff --git a/components/net/lwip-1.4.1/src/include/posix/sys/socket.h b/components/net/lwip/lwip-1.4.1/src/include/posix/sys/socket.h
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diff --git a/components/net/lwip-1.4.1/src/lwipopts.h b/components/net/lwip/lwip-1.4.1/src/lwipopts.h
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diff --git a/components/net/lwip-1.4.1/src/netif/FILES b/components/net/lwip/lwip-1.4.1/src/netif/FILES
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diff --git a/components/net/lwip-1.4.1/src/netif/etharp.c b/components/net/lwip/lwip-1.4.1/src/netif/etharp.c
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diff --git a/components/net/lwip-1.4.1/src/netif/ethernetif.c b/components/net/lwip/lwip-1.4.1/src/netif/ethernetif.c
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/auth.c b/components/net/lwip/lwip-1.4.1/src/netif/ppp/auth.c
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/auth.h b/components/net/lwip/lwip-1.4.1/src/netif/ppp/auth.h
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/chap.c b/components/net/lwip/lwip-1.4.1/src/netif/ppp/chap.c
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/chpms.c b/components/net/lwip/lwip-1.4.1/src/netif/ppp/chpms.c
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/chpms.h b/components/net/lwip/lwip-1.4.1/src/netif/ppp/chpms.h
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/fsm.c b/components/net/lwip/lwip-1.4.1/src/netif/ppp/fsm.c
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/fsm.h b/components/net/lwip/lwip-1.4.1/src/netif/ppp/fsm.h
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/ipcp.c b/components/net/lwip/lwip-1.4.1/src/netif/ppp/ipcp.c
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/ipcp.h b/components/net/lwip/lwip-1.4.1/src/netif/ppp/ipcp.h
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/lcp.c b/components/net/lwip/lwip-1.4.1/src/netif/ppp/lcp.c
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/lcp.h b/components/net/lwip/lwip-1.4.1/src/netif/ppp/lcp.h
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/magic.c b/components/net/lwip/lwip-1.4.1/src/netif/ppp/magic.c
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/magic.h b/components/net/lwip/lwip-1.4.1/src/netif/ppp/magic.h
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/md5.c b/components/net/lwip/lwip-1.4.1/src/netif/ppp/md5.c
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/md5.h b/components/net/lwip/lwip-1.4.1/src/netif/ppp/md5.h
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/pap.c b/components/net/lwip/lwip-1.4.1/src/netif/ppp/pap.c
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/pap.h b/components/net/lwip/lwip-1.4.1/src/netif/ppp/pap.h
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/ppp.c b/components/net/lwip/lwip-1.4.1/src/netif/ppp/ppp.c
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/ppp.h b/components/net/lwip/lwip-1.4.1/src/netif/ppp/ppp.h
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/ppp_impl.h b/components/net/lwip/lwip-1.4.1/src/netif/ppp/ppp_impl.h
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/ppp_oe.c b/components/net/lwip/lwip-1.4.1/src/netif/ppp/ppp_oe.c
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/pppdebug.h b/components/net/lwip/lwip-1.4.1/src/netif/ppp/pppdebug.h
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/randm.c b/components/net/lwip/lwip-1.4.1/src/netif/ppp/randm.c
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/randm.h b/components/net/lwip/lwip-1.4.1/src/netif/ppp/randm.h
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diff --git a/components/net/lwip-1.4.1/src/netif/ppp/vj.c b/components/net/lwip/lwip-1.4.1/src/netif/ppp/vj.c
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diff --git a/components/net/lwip-1.4.1/src/netif/slipif.c b/components/net/lwip/lwip-1.4.1/src/netif/slipif.c
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diff --git a/components/net/lwip-1.4.1/test/unit/core/test_mem.c b/components/net/lwip/lwip-1.4.1/test/unit/core/test_mem.c
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diff --git a/components/net/lwip-1.4.1/test/unit/lwip_check.h b/components/net/lwip/lwip-1.4.1/test/unit/lwip_check.h
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diff --git a/components/net/lwip-1.4.1/test/unit/tcp/test_tcp_oos.h b/components/net/lwip/lwip-1.4.1/test/unit/tcp/test_tcp_oos.h
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diff --git a/components/net/lwip-1.4.1/test/unit/udp/test_udp.c b/components/net/lwip/lwip-1.4.1/test/unit/udp/test_udp.c
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diff --git a/components/net/lwip-2.0.3/CHANGELOG b/components/net/lwip/lwip-2.0.3/CHANGELOG
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diff --git a/components/net/lwip-2.0.3/src/apps/snmp/snmp_pbuf_stream.h b/components/net/lwip/lwip-2.0.3/src/apps/snmp/snmp_pbuf_stream.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/apps/snmp/snmp_pbuf_stream.h
rename to components/net/lwip/lwip-2.0.3/src/apps/snmp/snmp_pbuf_stream.h
diff --git a/components/net/lwip-2.0.3/src/apps/snmp/snmp_raw.c b/components/net/lwip/lwip-2.0.3/src/apps/snmp/snmp_raw.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/apps/snmp/snmp_raw.c
rename to components/net/lwip/lwip-2.0.3/src/apps/snmp/snmp_raw.c
diff --git a/components/net/lwip-2.0.3/src/apps/snmp/snmp_scalar.c b/components/net/lwip/lwip-2.0.3/src/apps/snmp/snmp_scalar.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/apps/snmp/snmp_scalar.c
rename to components/net/lwip/lwip-2.0.3/src/apps/snmp/snmp_scalar.c
diff --git a/components/net/lwip-2.0.3/src/apps/snmp/snmp_table.c b/components/net/lwip/lwip-2.0.3/src/apps/snmp/snmp_table.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/apps/snmp/snmp_table.c
rename to components/net/lwip/lwip-2.0.3/src/apps/snmp/snmp_table.c
diff --git a/components/net/lwip-2.0.3/src/apps/snmp/snmp_threadsync.c b/components/net/lwip/lwip-2.0.3/src/apps/snmp/snmp_threadsync.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/apps/snmp/snmp_threadsync.c
rename to components/net/lwip/lwip-2.0.3/src/apps/snmp/snmp_threadsync.c
diff --git a/components/net/lwip-2.0.3/src/apps/snmp/snmp_traps.c b/components/net/lwip/lwip-2.0.3/src/apps/snmp/snmp_traps.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/apps/snmp/snmp_traps.c
rename to components/net/lwip/lwip-2.0.3/src/apps/snmp/snmp_traps.c
diff --git a/components/net/lwip-2.0.3/src/apps/snmp/snmpv3.c b/components/net/lwip/lwip-2.0.3/src/apps/snmp/snmpv3.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/apps/snmp/snmpv3.c
rename to components/net/lwip/lwip-2.0.3/src/apps/snmp/snmpv3.c
diff --git a/components/net/lwip-2.0.3/src/apps/snmp/snmpv3_dummy.c b/components/net/lwip/lwip-2.0.3/src/apps/snmp/snmpv3_dummy.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/apps/snmp/snmpv3_dummy.c
rename to components/net/lwip/lwip-2.0.3/src/apps/snmp/snmpv3_dummy.c
diff --git a/components/net/lwip-2.0.3/src/apps/snmp/snmpv3_mbedtls.c b/components/net/lwip/lwip-2.0.3/src/apps/snmp/snmpv3_mbedtls.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/apps/snmp/snmpv3_mbedtls.c
rename to components/net/lwip/lwip-2.0.3/src/apps/snmp/snmpv3_mbedtls.c
diff --git a/components/net/lwip-2.0.3/src/apps/snmp/snmpv3_priv.h b/components/net/lwip/lwip-2.0.3/src/apps/snmp/snmpv3_priv.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/apps/snmp/snmpv3_priv.h
rename to components/net/lwip/lwip-2.0.3/src/apps/snmp/snmpv3_priv.h
diff --git a/components/net/lwip-2.0.3/src/apps/sntp/sntp.c b/components/net/lwip/lwip-2.0.3/src/apps/sntp/sntp.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/apps/sntp/sntp.c
rename to components/net/lwip/lwip-2.0.3/src/apps/sntp/sntp.c
diff --git a/components/net/lwip-2.0.3/src/apps/tftp/tftp_port.c b/components/net/lwip/lwip-2.0.3/src/apps/tftp/tftp_port.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/apps/tftp/tftp_port.c
rename to components/net/lwip/lwip-2.0.3/src/apps/tftp/tftp_port.c
diff --git a/components/net/lwip-2.0.3/src/apps/tftp/tftp_server.c b/components/net/lwip/lwip-2.0.3/src/apps/tftp/tftp_server.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/apps/tftp/tftp_server.c
rename to components/net/lwip/lwip-2.0.3/src/apps/tftp/tftp_server.c
diff --git a/components/net/lwip-2.0.3/src/arch/include/arch/bpstruct.h b/components/net/lwip/lwip-2.0.3/src/arch/include/arch/bpstruct.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/arch/include/arch/bpstruct.h
rename to components/net/lwip/lwip-2.0.3/src/arch/include/arch/bpstruct.h
diff --git a/components/net/lwip-2.0.3/src/arch/include/arch/cc.h b/components/net/lwip/lwip-2.0.3/src/arch/include/arch/cc.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/arch/include/arch/cc.h
rename to components/net/lwip/lwip-2.0.3/src/arch/include/arch/cc.h
diff --git a/components/net/lwip-2.0.3/src/arch/include/arch/epstruct.h b/components/net/lwip/lwip-2.0.3/src/arch/include/arch/epstruct.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/arch/include/arch/epstruct.h
rename to components/net/lwip/lwip-2.0.3/src/arch/include/arch/epstruct.h
diff --git a/components/net/lwip-2.0.3/src/arch/include/arch/perf.h b/components/net/lwip/lwip-2.0.3/src/arch/include/arch/perf.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/arch/include/arch/perf.h
rename to components/net/lwip/lwip-2.0.3/src/arch/include/arch/perf.h
diff --git a/components/net/lwip-2.0.3/src/arch/include/arch/sys_arch.h b/components/net/lwip/lwip-2.0.3/src/arch/include/arch/sys_arch.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/arch/include/arch/sys_arch.h
rename to components/net/lwip/lwip-2.0.3/src/arch/include/arch/sys_arch.h
diff --git a/components/net/lwip-2.0.3/src/arch/sys_arch.c b/components/net/lwip/lwip-2.0.3/src/arch/sys_arch.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/arch/sys_arch.c
rename to components/net/lwip/lwip-2.0.3/src/arch/sys_arch.c
diff --git a/components/net/lwip-2.0.3/src/core/def.c b/components/net/lwip/lwip-2.0.3/src/core/def.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/def.c
rename to components/net/lwip/lwip-2.0.3/src/core/def.c
diff --git a/components/net/lwip-2.0.3/src/core/dns.c b/components/net/lwip/lwip-2.0.3/src/core/dns.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/dns.c
rename to components/net/lwip/lwip-2.0.3/src/core/dns.c
diff --git a/components/net/lwip-2.0.3/src/core/inet_chksum.c b/components/net/lwip/lwip-2.0.3/src/core/inet_chksum.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/inet_chksum.c
rename to components/net/lwip/lwip-2.0.3/src/core/inet_chksum.c
diff --git a/components/net/lwip-2.0.3/src/core/init.c b/components/net/lwip/lwip-2.0.3/src/core/init.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/init.c
rename to components/net/lwip/lwip-2.0.3/src/core/init.c
diff --git a/components/net/lwip-2.0.3/src/core/ip.c b/components/net/lwip/lwip-2.0.3/src/core/ip.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ip.c
rename to components/net/lwip/lwip-2.0.3/src/core/ip.c
diff --git a/components/net/lwip-2.0.3/src/core/ipv4/autoip.c b/components/net/lwip/lwip-2.0.3/src/core/ipv4/autoip.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ipv4/autoip.c
rename to components/net/lwip/lwip-2.0.3/src/core/ipv4/autoip.c
diff --git a/components/net/lwip-2.0.3/src/core/ipv4/dhcp.c b/components/net/lwip/lwip-2.0.3/src/core/ipv4/dhcp.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ipv4/dhcp.c
rename to components/net/lwip/lwip-2.0.3/src/core/ipv4/dhcp.c
diff --git a/components/net/lwip-2.0.3/src/core/ipv4/etharp.c b/components/net/lwip/lwip-2.0.3/src/core/ipv4/etharp.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ipv4/etharp.c
rename to components/net/lwip/lwip-2.0.3/src/core/ipv4/etharp.c
diff --git a/components/net/lwip-2.0.3/src/core/ipv4/icmp.c b/components/net/lwip/lwip-2.0.3/src/core/ipv4/icmp.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ipv4/icmp.c
rename to components/net/lwip/lwip-2.0.3/src/core/ipv4/icmp.c
diff --git a/components/net/lwip-2.0.3/src/core/ipv4/igmp.c b/components/net/lwip/lwip-2.0.3/src/core/ipv4/igmp.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ipv4/igmp.c
rename to components/net/lwip/lwip-2.0.3/src/core/ipv4/igmp.c
diff --git a/components/net/lwip-2.0.3/src/core/ipv4/ip4.c b/components/net/lwip/lwip-2.0.3/src/core/ipv4/ip4.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ipv4/ip4.c
rename to components/net/lwip/lwip-2.0.3/src/core/ipv4/ip4.c
diff --git a/components/net/lwip-2.0.3/src/core/ipv4/ip4_addr.c b/components/net/lwip/lwip-2.0.3/src/core/ipv4/ip4_addr.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ipv4/ip4_addr.c
rename to components/net/lwip/lwip-2.0.3/src/core/ipv4/ip4_addr.c
diff --git a/components/net/lwip-2.0.3/src/core/ipv4/ip4_frag.c b/components/net/lwip/lwip-2.0.3/src/core/ipv4/ip4_frag.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ipv4/ip4_frag.c
rename to components/net/lwip/lwip-2.0.3/src/core/ipv4/ip4_frag.c
diff --git a/components/net/lwip-2.0.3/src/core/ipv6/dhcp6.c b/components/net/lwip/lwip-2.0.3/src/core/ipv6/dhcp6.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ipv6/dhcp6.c
rename to components/net/lwip/lwip-2.0.3/src/core/ipv6/dhcp6.c
diff --git a/components/net/lwip-2.0.3/src/core/ipv6/ethip6.c b/components/net/lwip/lwip-2.0.3/src/core/ipv6/ethip6.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ipv6/ethip6.c
rename to components/net/lwip/lwip-2.0.3/src/core/ipv6/ethip6.c
diff --git a/components/net/lwip-2.0.3/src/core/ipv6/icmp6.c b/components/net/lwip/lwip-2.0.3/src/core/ipv6/icmp6.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ipv6/icmp6.c
rename to components/net/lwip/lwip-2.0.3/src/core/ipv6/icmp6.c
diff --git a/components/net/lwip-2.0.3/src/core/ipv6/inet6.c b/components/net/lwip/lwip-2.0.3/src/core/ipv6/inet6.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ipv6/inet6.c
rename to components/net/lwip/lwip-2.0.3/src/core/ipv6/inet6.c
diff --git a/components/net/lwip-2.0.3/src/core/ipv6/ip6.c b/components/net/lwip/lwip-2.0.3/src/core/ipv6/ip6.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ipv6/ip6.c
rename to components/net/lwip/lwip-2.0.3/src/core/ipv6/ip6.c
diff --git a/components/net/lwip-2.0.3/src/core/ipv6/ip6_addr.c b/components/net/lwip/lwip-2.0.3/src/core/ipv6/ip6_addr.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ipv6/ip6_addr.c
rename to components/net/lwip/lwip-2.0.3/src/core/ipv6/ip6_addr.c
diff --git a/components/net/lwip-2.0.3/src/core/ipv6/ip6_frag.c b/components/net/lwip/lwip-2.0.3/src/core/ipv6/ip6_frag.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ipv6/ip6_frag.c
rename to components/net/lwip/lwip-2.0.3/src/core/ipv6/ip6_frag.c
diff --git a/components/net/lwip-2.0.3/src/core/ipv6/mld6.c b/components/net/lwip/lwip-2.0.3/src/core/ipv6/mld6.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ipv6/mld6.c
rename to components/net/lwip/lwip-2.0.3/src/core/ipv6/mld6.c
diff --git a/components/net/lwip-2.0.3/src/core/ipv6/nd6.c b/components/net/lwip/lwip-2.0.3/src/core/ipv6/nd6.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/ipv6/nd6.c
rename to components/net/lwip/lwip-2.0.3/src/core/ipv6/nd6.c
diff --git a/components/net/lwip-2.0.3/src/core/mem.c b/components/net/lwip/lwip-2.0.3/src/core/mem.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/mem.c
rename to components/net/lwip/lwip-2.0.3/src/core/mem.c
diff --git a/components/net/lwip-2.0.3/src/core/memp.c b/components/net/lwip/lwip-2.0.3/src/core/memp.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/memp.c
rename to components/net/lwip/lwip-2.0.3/src/core/memp.c
diff --git a/components/net/lwip-2.0.3/src/core/netif.c b/components/net/lwip/lwip-2.0.3/src/core/netif.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/netif.c
rename to components/net/lwip/lwip-2.0.3/src/core/netif.c
diff --git a/components/net/lwip-2.0.3/src/core/pbuf.c b/components/net/lwip/lwip-2.0.3/src/core/pbuf.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/pbuf.c
rename to components/net/lwip/lwip-2.0.3/src/core/pbuf.c
diff --git a/components/net/lwip-2.0.3/src/core/raw.c b/components/net/lwip/lwip-2.0.3/src/core/raw.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/raw.c
rename to components/net/lwip/lwip-2.0.3/src/core/raw.c
diff --git a/components/net/lwip-2.0.3/src/core/stats.c b/components/net/lwip/lwip-2.0.3/src/core/stats.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/stats.c
rename to components/net/lwip/lwip-2.0.3/src/core/stats.c
diff --git a/components/net/lwip-2.0.3/src/core/sys.c b/components/net/lwip/lwip-2.0.3/src/core/sys.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/sys.c
rename to components/net/lwip/lwip-2.0.3/src/core/sys.c
diff --git a/components/net/lwip-2.0.3/src/core/tcp.c b/components/net/lwip/lwip-2.0.3/src/core/tcp.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/tcp.c
rename to components/net/lwip/lwip-2.0.3/src/core/tcp.c
diff --git a/components/net/lwip-2.0.3/src/core/tcp_in.c b/components/net/lwip/lwip-2.0.3/src/core/tcp_in.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/tcp_in.c
rename to components/net/lwip/lwip-2.0.3/src/core/tcp_in.c
diff --git a/components/net/lwip-2.0.3/src/core/tcp_out.c b/components/net/lwip/lwip-2.0.3/src/core/tcp_out.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/tcp_out.c
rename to components/net/lwip/lwip-2.0.3/src/core/tcp_out.c
diff --git a/components/net/lwip-2.0.3/src/core/timeouts.c b/components/net/lwip/lwip-2.0.3/src/core/timeouts.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/timeouts.c
rename to components/net/lwip/lwip-2.0.3/src/core/timeouts.c
diff --git a/components/net/lwip-2.0.3/src/core/udp.c b/components/net/lwip/lwip-2.0.3/src/core/udp.c
similarity index 100%
rename from components/net/lwip-2.0.3/src/core/udp.c
rename to components/net/lwip/lwip-2.0.3/src/core/udp.c
diff --git a/components/net/lwip-2.0.3/src/include/lwip/api.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/api.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/api.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/api.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/FILES b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/FILES
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/FILES
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/FILES
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/fs.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/fs.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/fs.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/fs.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/httpd.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/httpd.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/httpd.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/httpd.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/httpd_opts.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/httpd_opts.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/httpd_opts.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/httpd_opts.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/lwiperf.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/lwiperf.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/lwiperf.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/lwiperf.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/mdns.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/mdns.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/mdns.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/mdns.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/mdns_opts.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/mdns_opts.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/mdns_opts.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/mdns_opts.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/mdns_priv.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/mdns_priv.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/mdns_priv.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/mdns_priv.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/mqtt.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/mqtt.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/mqtt.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/mqtt.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/mqtt_opts.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/mqtt_opts.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/mqtt_opts.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/mqtt_opts.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/netbiosns.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/netbiosns.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/netbiosns.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/netbiosns.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/netbiosns_opts.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/netbiosns_opts.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/netbiosns_opts.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/netbiosns_opts.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/snmp.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/snmp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/snmp.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/snmp.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/snmp_core.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/snmp_core.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/snmp_core.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/snmp_core.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/snmp_mib2.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/snmp_mib2.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/snmp_mib2.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/snmp_mib2.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/snmp_opts.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/snmp_opts.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/snmp_opts.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/snmp_opts.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/snmp_scalar.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/snmp_scalar.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/snmp_scalar.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/snmp_scalar.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/snmp_table.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/snmp_table.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/snmp_table.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/snmp_table.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/snmp_threadsync.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/snmp_threadsync.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/snmp_threadsync.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/snmp_threadsync.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/snmpv3.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/snmpv3.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/snmpv3.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/snmpv3.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/sntp.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/sntp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/sntp.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/sntp.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/sntp_opts.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/sntp_opts.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/sntp_opts.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/sntp_opts.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/tftp_opts.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/tftp_opts.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/tftp_opts.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/tftp_opts.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/apps/tftp_server.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/apps/tftp_server.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/apps/tftp_server.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/apps/tftp_server.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/arch.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/arch.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/arch.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/arch.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/autoip.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/autoip.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/autoip.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/autoip.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/debug.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/debug.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/debug.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/debug.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/def.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/def.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/def.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/def.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/dhcp.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/dhcp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/dhcp.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/dhcp.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/dhcp6.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/dhcp6.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/dhcp6.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/dhcp6.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/dns.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/dns.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/dns.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/dns.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/err.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/err.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/err.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/err.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/errno.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/errno.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/errno.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/errno.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/etharp.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/etharp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/etharp.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/etharp.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/ethip6.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/ethip6.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/ethip6.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/ethip6.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/icmp.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/icmp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/icmp.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/icmp.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/icmp6.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/icmp6.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/icmp6.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/icmp6.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/igmp.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/igmp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/igmp.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/igmp.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/inet.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/inet.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/inet.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/inet.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/inet_chksum.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/inet_chksum.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/inet_chksum.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/inet_chksum.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/init.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/init.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/init.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/init.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/ip.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/ip.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/ip.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/ip.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/ip4.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/ip4.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/ip4.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/ip4.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/ip4_addr.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/ip4_addr.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/ip4_addr.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/ip4_addr.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/ip4_frag.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/ip4_frag.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/ip4_frag.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/ip4_frag.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/ip6.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/ip6.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/ip6.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/ip6.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/ip6_addr.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/ip6_addr.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/ip6_addr.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/ip6_addr.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/ip6_frag.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/ip6_frag.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/ip6_frag.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/ip6_frag.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/ip_addr.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/ip_addr.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/ip_addr.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/ip_addr.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/mem.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/mem.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/mem.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/mem.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/memp.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/memp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/memp.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/memp.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/mld6.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/mld6.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/mld6.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/mld6.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/nd6.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/nd6.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/nd6.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/nd6.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/netbuf.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/netbuf.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/netbuf.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/netbuf.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/netdb.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/netdb.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/netdb.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/netdb.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/netif.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/netif.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/netif.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/netif.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/netifapi.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/netifapi.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/netifapi.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/netifapi.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/opt.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/opt.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/opt.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/opt.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/pbuf.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/pbuf.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/pbuf.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/pbuf.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/priv/api_msg.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/priv/api_msg.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/priv/api_msg.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/priv/api_msg.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/priv/memp_priv.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/priv/memp_priv.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/priv/memp_priv.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/priv/memp_priv.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/priv/memp_std.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/priv/memp_std.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/priv/memp_std.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/priv/memp_std.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/priv/nd6_priv.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/priv/nd6_priv.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/priv/nd6_priv.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/priv/nd6_priv.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/priv/tcp_priv.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/priv/tcp_priv.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/priv/tcp_priv.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/priv/tcp_priv.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/priv/tcpip_priv.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/priv/tcpip_priv.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/priv/tcpip_priv.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/priv/tcpip_priv.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/prot/autoip.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/prot/autoip.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/prot/autoip.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/prot/autoip.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/prot/dhcp.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/prot/dhcp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/prot/dhcp.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/prot/dhcp.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/prot/dns.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/prot/dns.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/prot/dns.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/prot/dns.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/prot/etharp.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/prot/etharp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/prot/etharp.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/prot/etharp.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/prot/ethernet.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/prot/ethernet.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/prot/ethernet.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/prot/ethernet.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/prot/icmp.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/prot/icmp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/prot/icmp.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/prot/icmp.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/prot/icmp6.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/prot/icmp6.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/prot/icmp6.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/prot/icmp6.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/prot/igmp.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/prot/igmp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/prot/igmp.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/prot/igmp.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/prot/ip.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/prot/ip.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/prot/ip.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/prot/ip.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/prot/ip4.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/prot/ip4.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/prot/ip4.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/prot/ip4.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/prot/ip6.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/prot/ip6.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/prot/ip6.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/prot/ip6.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/prot/mld6.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/prot/mld6.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/prot/mld6.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/prot/mld6.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/prot/nd6.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/prot/nd6.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/prot/nd6.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/prot/nd6.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/prot/tcp.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/prot/tcp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/prot/tcp.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/prot/tcp.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/prot/udp.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/prot/udp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/prot/udp.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/prot/udp.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/raw.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/raw.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/raw.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/raw.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/sio.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/sio.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/sio.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/sio.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/snmp.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/snmp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/snmp.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/snmp.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/sockets.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/sockets.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/sockets.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/sockets.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/stats.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/stats.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/stats.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/stats.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/sys.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/sys.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/sys.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/sys.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/tcp.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/tcp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/tcp.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/tcp.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/tcpip.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/tcpip.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/tcpip.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/tcpip.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/timeouts.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/timeouts.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/timeouts.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/timeouts.h
diff --git a/components/net/lwip-2.0.3/src/include/lwip/udp.h b/components/net/lwip/lwip-2.0.3/src/include/lwip/udp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/lwip/udp.h
rename to components/net/lwip/lwip-2.0.3/src/include/lwip/udp.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/etharp.h b/components/net/lwip/lwip-2.0.3/src/include/netif/etharp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/etharp.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/etharp.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ethernet.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ethernet.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ethernet.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ethernet.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ethernetif.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ethernetif.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ethernetif.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ethernetif.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/lowpan6.h b/components/net/lwip/lwip-2.0.3/src/include/netif/lowpan6.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/lowpan6.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/lowpan6.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/lowpan6_opts.h b/components/net/lwip/lwip-2.0.3/src/include/netif/lowpan6_opts.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/lowpan6_opts.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/lowpan6_opts.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/ccp.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/ccp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/ccp.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/ccp.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/chap-md5.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/chap-md5.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/chap-md5.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/chap-md5.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/chap-new.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/chap-new.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/chap-new.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/chap-new.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/chap_ms.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/chap_ms.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/chap_ms.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/chap_ms.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/eap.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/eap.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/eap.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/eap.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/ecp.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/ecp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/ecp.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/ecp.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/eui64.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/eui64.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/eui64.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/eui64.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/fsm.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/fsm.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/fsm.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/fsm.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/ipcp.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/ipcp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/ipcp.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/ipcp.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/ipv6cp.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/ipv6cp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/ipv6cp.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/ipv6cp.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/lcp.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/lcp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/lcp.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/lcp.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/magic.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/magic.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/magic.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/magic.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/mppe.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/mppe.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/mppe.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/mppe.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/polarssl/arc4.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/polarssl/arc4.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/polarssl/arc4.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/polarssl/arc4.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/polarssl/des.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/polarssl/des.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/polarssl/des.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/polarssl/des.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/polarssl/md4.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/polarssl/md4.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/polarssl/md4.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/polarssl/md4.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/polarssl/md5.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/polarssl/md5.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/polarssl/md5.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/polarssl/md5.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/polarssl/sha1.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/polarssl/sha1.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/polarssl/sha1.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/polarssl/sha1.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/ppp.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/ppp.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/ppp.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/ppp.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/ppp_impl.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/ppp_impl.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/ppp_impl.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/ppp_impl.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/ppp_opts.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/ppp_opts.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/ppp_opts.h
rename to components/net/lwip/lwip-2.0.3/src/include/netif/ppp/ppp_opts.h
diff --git a/components/net/lwip-2.0.3/src/include/netif/ppp/pppapi.h b/components/net/lwip/lwip-2.0.3/src/include/netif/ppp/pppapi.h
similarity index 100%
rename from components/net/lwip-2.0.3/src/include/netif/ppp/pppapi.h
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similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/core/test_pbuf.c
rename to components/net/lwip/lwip-2.0.3/test/unit/core/test_pbuf.c
diff --git a/components/net/lwip-2.0.3/test/unit/core/test_pbuf.h b/components/net/lwip/lwip-2.0.3/test/unit/core/test_pbuf.h
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/core/test_pbuf.h
rename to components/net/lwip/lwip-2.0.3/test/unit/core/test_pbuf.h
diff --git a/components/net/lwip-2.0.3/test/unit/dhcp/test_dhcp.c b/components/net/lwip/lwip-2.0.3/test/unit/dhcp/test_dhcp.c
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/dhcp/test_dhcp.c
rename to components/net/lwip/lwip-2.0.3/test/unit/dhcp/test_dhcp.c
diff --git a/components/net/lwip-2.0.3/test/unit/dhcp/test_dhcp.h b/components/net/lwip/lwip-2.0.3/test/unit/dhcp/test_dhcp.h
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/dhcp/test_dhcp.h
rename to components/net/lwip/lwip-2.0.3/test/unit/dhcp/test_dhcp.h
diff --git a/components/net/lwip-2.0.3/test/unit/etharp/test_etharp.c b/components/net/lwip/lwip-2.0.3/test/unit/etharp/test_etharp.c
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/etharp/test_etharp.c
rename to components/net/lwip/lwip-2.0.3/test/unit/etharp/test_etharp.c
diff --git a/components/net/lwip-2.0.3/test/unit/etharp/test_etharp.h b/components/net/lwip/lwip-2.0.3/test/unit/etharp/test_etharp.h
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/etharp/test_etharp.h
rename to components/net/lwip/lwip-2.0.3/test/unit/etharp/test_etharp.h
diff --git a/components/net/lwip-2.0.3/test/unit/ip4/test_ip4.c b/components/net/lwip/lwip-2.0.3/test/unit/ip4/test_ip4.c
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/ip4/test_ip4.c
rename to components/net/lwip/lwip-2.0.3/test/unit/ip4/test_ip4.c
diff --git a/components/net/lwip-2.0.3/test/unit/ip4/test_ip4.h b/components/net/lwip/lwip-2.0.3/test/unit/ip4/test_ip4.h
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/ip4/test_ip4.h
rename to components/net/lwip/lwip-2.0.3/test/unit/ip4/test_ip4.h
diff --git a/components/net/lwip-2.0.3/test/unit/lwip_check.h b/components/net/lwip/lwip-2.0.3/test/unit/lwip_check.h
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/lwip_check.h
rename to components/net/lwip/lwip-2.0.3/test/unit/lwip_check.h
diff --git a/components/net/lwip-2.0.3/test/unit/lwip_unittests.c b/components/net/lwip/lwip-2.0.3/test/unit/lwip_unittests.c
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/lwip_unittests.c
rename to components/net/lwip/lwip-2.0.3/test/unit/lwip_unittests.c
diff --git a/components/net/lwip-2.0.3/test/unit/lwipopts.h b/components/net/lwip/lwip-2.0.3/test/unit/lwipopts.h
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/lwipopts.h
rename to components/net/lwip/lwip-2.0.3/test/unit/lwipopts.h
diff --git a/components/net/lwip-2.0.3/test/unit/mdns/test_mdns.c b/components/net/lwip/lwip-2.0.3/test/unit/mdns/test_mdns.c
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/mdns/test_mdns.c
rename to components/net/lwip/lwip-2.0.3/test/unit/mdns/test_mdns.c
diff --git a/components/net/lwip-2.0.3/test/unit/mdns/test_mdns.h b/components/net/lwip/lwip-2.0.3/test/unit/mdns/test_mdns.h
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/mdns/test_mdns.h
rename to components/net/lwip/lwip-2.0.3/test/unit/mdns/test_mdns.h
diff --git a/components/net/lwip-2.0.3/test/unit/tcp/tcp_helper.c b/components/net/lwip/lwip-2.0.3/test/unit/tcp/tcp_helper.c
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/tcp/tcp_helper.c
rename to components/net/lwip/lwip-2.0.3/test/unit/tcp/tcp_helper.c
diff --git a/components/net/lwip-2.0.3/test/unit/tcp/tcp_helper.h b/components/net/lwip/lwip-2.0.3/test/unit/tcp/tcp_helper.h
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/tcp/tcp_helper.h
rename to components/net/lwip/lwip-2.0.3/test/unit/tcp/tcp_helper.h
diff --git a/components/net/lwip-2.0.3/test/unit/tcp/test_tcp.c b/components/net/lwip/lwip-2.0.3/test/unit/tcp/test_tcp.c
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/tcp/test_tcp.c
rename to components/net/lwip/lwip-2.0.3/test/unit/tcp/test_tcp.c
diff --git a/components/net/lwip-2.0.3/test/unit/tcp/test_tcp.h b/components/net/lwip/lwip-2.0.3/test/unit/tcp/test_tcp.h
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/tcp/test_tcp.h
rename to components/net/lwip/lwip-2.0.3/test/unit/tcp/test_tcp.h
diff --git a/components/net/lwip-2.0.3/test/unit/tcp/test_tcp_oos.c b/components/net/lwip/lwip-2.0.3/test/unit/tcp/test_tcp_oos.c
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/tcp/test_tcp_oos.c
rename to components/net/lwip/lwip-2.0.3/test/unit/tcp/test_tcp_oos.c
diff --git a/components/net/lwip-2.0.3/test/unit/tcp/test_tcp_oos.h b/components/net/lwip/lwip-2.0.3/test/unit/tcp/test_tcp_oos.h
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/tcp/test_tcp_oos.h
rename to components/net/lwip/lwip-2.0.3/test/unit/tcp/test_tcp_oos.h
diff --git a/components/net/lwip-2.0.3/test/unit/udp/test_udp.c b/components/net/lwip/lwip-2.0.3/test/unit/udp/test_udp.c
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/udp/test_udp.c
rename to components/net/lwip/lwip-2.0.3/test/unit/udp/test_udp.c
diff --git a/components/net/lwip-2.0.3/test/unit/udp/test_udp.h b/components/net/lwip/lwip-2.0.3/test/unit/udp/test_udp.h
similarity index 100%
rename from components/net/lwip-2.0.3/test/unit/udp/test_udp.h
rename to components/net/lwip/lwip-2.0.3/test/unit/udp/test_udp.h
diff --git a/components/net/lwip-2.1.2/CHANGELOG b/components/net/lwip/lwip-2.1.2/CHANGELOG
similarity index 100%
rename from components/net/lwip-2.1.2/CHANGELOG
rename to components/net/lwip/lwip-2.1.2/CHANGELOG
diff --git a/components/net/lwip-2.1.2/COPYING b/components/net/lwip/lwip-2.1.2/COPYING
similarity index 100%
rename from components/net/lwip-2.1.2/COPYING
rename to components/net/lwip/lwip-2.1.2/COPYING
diff --git a/components/net/lwip-2.1.2/FEATURES b/components/net/lwip/lwip-2.1.2/FEATURES
similarity index 100%
rename from components/net/lwip-2.1.2/FEATURES
rename to components/net/lwip/lwip-2.1.2/FEATURES
diff --git a/components/net/lwip-2.1.2/FILES b/components/net/lwip/lwip-2.1.2/FILES
similarity index 100%
rename from components/net/lwip-2.1.2/FILES
rename to components/net/lwip/lwip-2.1.2/FILES
diff --git a/components/net/lwip-2.1.2/README b/components/net/lwip/lwip-2.1.2/README
similarity index 100%
rename from components/net/lwip-2.1.2/README
rename to components/net/lwip/lwip-2.1.2/README
diff --git a/components/net/lwip-2.1.2/README_RT-THREAD.md b/components/net/lwip/lwip-2.1.2/README.md
similarity index 100%
rename from components/net/lwip-2.1.2/README_RT-THREAD.md
rename to components/net/lwip/lwip-2.1.2/README.md
diff --git a/components/net/lwip-2.1.2/SConscript b/components/net/lwip/lwip-2.1.2/SConscript
similarity index 100%
rename from components/net/lwip-2.1.2/SConscript
rename to components/net/lwip/lwip-2.1.2/SConscript
diff --git a/components/net/lwip-2.1.2/UPGRADING b/components/net/lwip/lwip-2.1.2/UPGRADING
similarity index 100%
rename from components/net/lwip-2.1.2/UPGRADING
rename to components/net/lwip/lwip-2.1.2/UPGRADING
diff --git a/components/net/lwip/lwip-2.1.2/doc/FILES b/components/net/lwip/lwip-2.1.2/doc/FILES
new file mode 100644
index 0000000000..e588575085
--- /dev/null
+++ b/components/net/lwip/lwip-2.1.2/doc/FILES
@@ -0,0 +1,9 @@
+doxygen/       - Configuration files and scripts to create the lwIP doxygen source
+                 documentation (found at http://www.nongnu.org/lwip/)
+
+savannah.txt   - How to obtain the current development source code.
+contrib.txt    - How to contribute to lwIP as a developer.
+rawapi.txt     - The documentation for the core API of lwIP.
+                 Also provides an overview about the other APIs and multithreading.
+sys_arch.txt   - The documentation for a system abstraction layer of lwIP.
+ppp.txt        - Documentation of the PPP interface for lwIP.
diff --git a/components/net/lwip/lwip-2.1.2/doc/NO_SYS_SampleCode.c b/components/net/lwip/lwip-2.1.2/doc/NO_SYS_SampleCode.c
new file mode 100644
index 0000000000..71f1c9f7f2
--- /dev/null
+++ b/components/net/lwip/lwip-2.1.2/doc/NO_SYS_SampleCode.c
@@ -0,0 +1,122 @@
+void
+eth_mac_irq()
+{
+  /* Service MAC IRQ here */
+
+  /* Allocate pbuf from pool (avoid using heap in interrupts) */
+  struct pbuf* p = pbuf_alloc(PBUF_RAW, eth_data_count, PBUF_POOL);
+
+  if(p != NULL) {
+    /* Copy ethernet frame into pbuf */
+    pbuf_take(p, eth_data, eth_data_count);
+
+    /* Put in a queue which is processed in main loop */
+    if(!queue_try_put(&queue, p)) {
+      /* queue is full -> packet loss */
+      pbuf_free(p);
+    }
+  }
+}
+
+static err_t 
+netif_output(struct netif *netif, struct pbuf *p)
+{
+  LINK_STATS_INC(link.xmit);
+
+  /* Update SNMP stats (only if you use SNMP) */
+  MIB2_STATS_NETIF_ADD(netif, ifoutoctets, p->tot_len);
+  int unicast = ((p->payload[0] & 0x01) == 0);
+  if (unicast) {
+    MIB2_STATS_NETIF_INC(netif, ifoutucastpkts);
+  } else {
+    MIB2_STATS_NETIF_INC(netif, ifoutnucastpkts);
+  }
+
+  lock_interrupts();
+  pbuf_copy_partial(p, mac_send_buffer, p->tot_len, 0);
+  /* Start MAC transmit here */
+  unlock_interrupts();
+
+  return ERR_OK;
+}
+
+static void 
+netif_status_callback(struct netif *netif)
+{
+  printf("netif status changed %s\n", ip4addr_ntoa(netif_ip4_addr(netif)));
+}
+
+static err_t 
+netif_init(struct netif *netif)
+{
+  netif->linkoutput = netif_output;
+  netif->output     = etharp_output;
+  netif->output_ip6 = ethip6_output;
+  netif->mtu        = ETHERNET_MTU;
+  netif->flags      = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET | NETIF_FLAG_IGMP | NETIF_FLAG_MLD6;
+  MIB2_INIT_NETIF(netif, snmp_ifType_ethernet_csmacd, 100000000);
+
+  SMEMCPY(netif->hwaddr, your_mac_address_goes_here, ETH_HWADDR_LEN);
+  netif->hwaddr_len = ETH_HWADDR_LEN;
+
+  return ERR_OK;
+}
+
+void 
+main(void)
+{
+  struct netif netif;
+
+  lwip_init();
+
+  netif_add(&netif, IP4_ADDR_ANY, IP4_ADDR_ANY, IP4_ADDR_ANY, NULL, netif_init, netif_input);
+  netif.name[0] = 'e';
+  netif.name[1] = '0';
+  netif_create_ip6_linklocal_address(&netif, 1);
+  netif.ip6_autoconfig_enabled = 1;
+  netif_set_status_callback(&netif, netif_status_callback);
+  netif_set_default(&netif);
+  netif_set_up(&netif);
+  
+  /* Start DHCP and HTTPD */
+  dhcp_start(&netif );
+  httpd_init();
+
+  while(1) {
+    /* Check link state, e.g. via MDIO communication with PHY */
+    if(link_state_changed()) {
+      if(link_is_up()) {
+        netif_set_link_up(&netif);
+      } else {
+        netif_set_link_down(&netif);
+      }
+    }
+
+    /* Check for received frames, feed them to lwIP */
+    lock_interrupts();
+    struct pbuf* p = queue_try_get(&queue);
+    unlock_interrupts();
+
+    if(p != NULL) {
+      LINK_STATS_INC(link.recv);
+ 
+      /* Update SNMP stats (only if you use SNMP) */
+      MIB2_STATS_NETIF_ADD(netif, ifinoctets, p->tot_len);
+      int unicast = ((p->payload[0] & 0x01) == 0);
+      if (unicast) {
+        MIB2_STATS_NETIF_INC(netif, ifinucastpkts);
+      } else {
+        MIB2_STATS_NETIF_INC(netif, ifinnucastpkts);
+      }
+
+      if(netif.input(p, &netif) != ERR_OK) {
+        pbuf_free(p);
+      }
+    }
+     
+    /* Cyclic lwIP timers check */
+    sys_check_timeouts();
+     
+    /* your application goes here */
+  }
+}
diff --git a/components/net/lwip/lwip-2.1.2/doc/ZeroCopyRx.c b/components/net/lwip/lwip-2.1.2/doc/ZeroCopyRx.c
new file mode 100644
index 0000000000..0e8219bd28
--- /dev/null
+++ b/components/net/lwip/lwip-2.1.2/doc/ZeroCopyRx.c
@@ -0,0 +1,45 @@
+typedef struct my_custom_pbuf
+{
+   struct pbuf_custom p;
+   void* dma_descriptor;
+} my_custom_pbuf_t;
+
+LWIP_MEMPOOL_DECLARE(RX_POOL, 10, sizeof(my_custom_pbuf_t), "Zero-copy RX PBUF pool");
+
+void my_pbuf_free_custom(void* p)
+{
+  SYS_ARCH_DECL_PROTECT(old_level);
+
+  my_custom_pbuf_t* my_puf = (my_custom_pbuf_t*)p;
+
+  // invalidate data cache here - lwIP and/or application may have written into buffer!
+  // (invalidate is faster than flushing, and noone needs the correct data in the buffer)
+  invalidate_cpu_cache(p->payload, p->tot_len);
+
+  SYS_ARCH_PROTECT(old_level);
+  free_rx_dma_descriptor(my_pbuf->dma_descriptor);
+  LWIP_MEMPOOL_FREE(RX_POOL, my_pbuf);
+  SYS_ARCH_UNPROTECT(old_level);
+}
+
+void eth_rx_irq()
+{
+  dma_descriptor*   dma_desc = get_RX_DMA_descriptor_from_ethernet();
+  my_custom_pbuf_t* my_pbuf  = (my_custom_pbuf_t*)LWIP_MEMPOOL_ALLOC(RX_POOL);
+
+  my_pbuf->p.custom_free_function = my_pbuf_free_custom;
+  my_pbuf->dma_descriptor         = dma_desc;
+
+  invalidate_cpu_cache(dma_desc->rx_data, dma_desc->rx_length);
+  
+  struct pbuf* p = pbuf_alloced_custom(PBUF_RAW,
+     dma_desc->rx_length,
+     PBUF_REF,
+     &my_pbuf->p,
+     dma_desc->rx_data,
+     dma_desc->max_buffer_size);
+
+  if(netif->input(p, netif) != ERR_OK) {
+    pbuf_free(p);
+  }
+}
diff --git a/components/net/lwip/lwip-2.1.2/doc/contrib.txt b/components/net/lwip/lwip-2.1.2/doc/contrib.txt
new file mode 100644
index 0000000000..6f0d7bc516
--- /dev/null
+++ b/components/net/lwip/lwip-2.1.2/doc/contrib.txt
@@ -0,0 +1,58 @@
+1 Introduction
+
+This document describes some guidelines for people participating
+in lwIP development.
+
+2 How to contribute to lwIP
+
+Here is a short list of suggestions to anybody working with lwIP and 
+trying to contribute bug reports, fixes, enhancements, platform ports etc.
+First of all as you may already know lwIP is a volunteer project so feedback
+to fixes or questions might often come late. Hopefully the bug and patch tracking 
+features of Savannah help us not lose users' input.
+
+2.1 Source code style:
+
+1. do not use tabs.
+2. indentation is two spaces per level (i.e. per tab).
+3. end debug messages with a trailing newline (\n).
+4. one space between keyword and opening bracket.
+5. no space between function and opening bracket.
+6. one space and no newline before opening curly braces of a block.
+7. closing curly brace on a single line.
+8. spaces surrounding assignment and comparisons.
+9. don't initialize static and/or global variables to zero, the compiler takes care of that.
+10. use current source code style as further reference.
+
+2.2 Source code documentation style:
+
+1. JavaDoc compliant and Doxygen compatible.
+2. Function documentation above functions in .c files, not .h files.
+   (This forces you to synchronize documentation and implementation.)
+3. Use current documentation style as further reference.
+ 
+2.3 Bug reports and patches:
+
+1. Make sure you are reporting bugs or send patches against the latest
+   sources. (From the latest release and/or the current Git sources.)
+2. If you think you found a bug make sure it's not already filed in the
+   bugtracker at Savannah.
+3. If you have a fix put the patch on Savannah. If it is a patch that affects
+   both core and arch specific stuff please separate them so that the core can
+   be applied separately while leaving the other patch 'open'. The preferred way
+   is to NOT touch archs you can't test and let maintainers take care of them.
+   This is a good way to see if they are used at all - the same goes for unix
+   netifs except tapif.
+4. Do not file a bug and post a fix to it to the patch area. Either a bug report
+   or a patch will be enough.
+   If you correct an existing bug then attach the patch to the bug rather than creating a new entry in the patch area.
+5. Patches should be specific to a single change or to related changes. Do not mix bugfixes with spelling and other
+   trivial fixes unless the bugfix is trivial too. Do not reorganize code and rename identifiers in the same patch you
+   change behaviour if not necessary. A patch is easier to read and understand if it's to the point and short than
+   if it's not to the point and long :) so the chances for it to be applied are greater. 
+
+2.4 Platform porters:
+
+1. If you have ported lwIP to a platform (an OS, a uC/processor or a combination of these) and
+   you think it could benefit others[1] you might want discuss this on the mailing list. You
+   can also ask for Git access to submit and maintain your port in the contrib Git module.
diff --git a/components/net/lwip/lwip-2.1.2/doc/doxygen/generate.bat b/components/net/lwip/lwip-2.1.2/doc/doxygen/generate.bat
new file mode 100644
index 0000000000..99afb124be
--- /dev/null
+++ b/components/net/lwip/lwip-2.1.2/doc/doxygen/generate.bat
@@ -0,0 +1 @@
+doxygen lwip.Doxyfile
diff --git a/components/net/lwip/lwip-2.1.2/doc/doxygen/generate.sh b/components/net/lwip/lwip-2.1.2/doc/doxygen/generate.sh
new file mode 100644
index 0000000000..89344b0e81
--- /dev/null
+++ b/components/net/lwip/lwip-2.1.2/doc/doxygen/generate.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+doxygen lwip.Doxyfile
diff --git a/components/net/lwip/lwip-2.1.2/doc/doxygen/lwip.Doxyfile b/components/net/lwip/lwip-2.1.2/doc/doxygen/lwip.Doxyfile
new file mode 100644
index 0000000000..c2039e59e1
--- /dev/null
+++ b/components/net/lwip/lwip-2.1.2/doc/doxygen/lwip.Doxyfile
@@ -0,0 +1,2531 @@
+# Doxyfile 1.8.13
+
+# This file describes the settings to be used by the documentation system
+# doxygen (www.doxygen.org) for a project.
+#
+# All text after a double hash (##) is considered a comment and is placed in
+# front of the TAG it is preceding.
+#
+# All text after a single hash (#) is considered a comment and will be ignored.
+# The format is:
+# TAG = value [value, ...]
+# For lists, items can also be appended using:
+# TAG += value [value, ...]
+# Values that contain spaces should be placed between quotes (\" \").
+
+#---------------------------------------------------------------------------
+# Project related configuration options
+#---------------------------------------------------------------------------
+
+# This tag specifies the encoding used for all characters in the config file
+# that follow. The default is UTF-8 which is also the encoding used for all text
+# before the first occurrence of this tag. Doxygen uses libiconv (or the iconv
+# built into libc) for the transcoding. See http://www.gnu.org/software/libiconv
+# for the list of possible encodings.
+# The default value is: UTF-8.
+
+DOXYFILE_ENCODING      = UTF-8
+
+# The PROJECT_NAME tag is a single word (or a sequence of words surrounded by
+# double-quotes, unless you are using Doxywizard) that should identify the
+# project for which the documentation is generated. This name is used in the
+# title of most generated pages and in a few other places.
+# The default value is: My Project.
+
+PROJECT_NAME           = "lwIP"
+
+# The PROJECT_NUMBER tag can be used to enter a project or revision number. This
+# could be handy for archiving the generated documentation or if some version
+# control system is used.
+
+PROJECT_NUMBER         = "2.1.2"
+
+# Using the PROJECT_BRIEF tag one can provide an optional one line description
+# for a project that appears at the top of each page and should give viewer a
+# quick idea about the purpose of the project. Keep the description short.
+
+PROJECT_BRIEF          = "Lightweight IP stack"
+
+# With the PROJECT_LOGO tag one can specify a logo or an icon that is included
+# in the documentation. The maximum height of the logo should not exceed 55
+# pixels and the maximum width should not exceed 200 pixels. Doxygen will copy
+# the logo to the output directory.
+
+PROJECT_LOGO           =
+
+# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) path
+# into which the generated documentation will be written. If a relative path is
+# entered, it will be relative to the location where doxygen was started. If
+# left blank the current directory will be used.
+
+OUTPUT_DIRECTORY       = "output"
+
+# If the CREATE_SUBDIRS tag is set to YES then doxygen will create 4096 sub-
+# directories (in 2 levels) under the output directory of each output format and
+# will distribute the generated files over these directories. Enabling this
+# option can be useful when feeding doxygen a huge amount of source files, where
+# putting all generated files in the same directory would otherwise causes
+# performance problems for the file system.
+# The default value is: NO.
+
+CREATE_SUBDIRS         = NO
+
+# If the ALLOW_UNICODE_NAMES tag is set to YES, doxygen will allow non-ASCII
+# characters to appear in the names of generated files. If set to NO, non-ASCII
+# characters will be escaped, for example _xE3_x81_x84 will be used for Unicode
+# U+3044.
+# The default value is: NO.
+
+ALLOW_UNICODE_NAMES    = NO
+
+# The OUTPUT_LANGUAGE tag is used to specify the language in which all
+# documentation generated by doxygen is written. Doxygen will use this
+# information to generate all constant output in the proper language.
+# Possible values are: Afrikaans, Arabic, Armenian, Brazilian, Catalan, Chinese,
+# Chinese-Traditional, Croatian, Czech, Danish, Dutch, English (United States),
+# Esperanto, Farsi (Persian), Finnish, French, German, Greek, Hungarian,
+# Indonesian, Italian, Japanese, Japanese-en (Japanese with English messages),
+# Korean, Korean-en (Korean with English messages), Latvian, Lithuanian,
+# Macedonian, Norwegian, Persian (Farsi), Polish, Portuguese, Romanian, Russian,
+# Serbian, Serbian-Cyrillic, Slovak, Slovene, Spanish, Swedish, Turkish,
+# Ukrainian and Vietnamese.
+# The default value is: English.
+
+OUTPUT_LANGUAGE        = English
+
+# If the BRIEF_MEMBER_DESC tag is set to YES, doxygen will include brief member
+# descriptions after the members that are listed in the file and class
+# documentation (similar to Javadoc). Set to NO to disable this.
+# The default value is: YES.
+
+BRIEF_MEMBER_DESC      = YES
+
+# If the REPEAT_BRIEF tag is set to YES, doxygen will prepend the brief
+# description of a member or function before the detailed description
+#
+# Note: If both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the
+# brief descriptions will be completely suppressed.
+# The default value is: YES.
+
+REPEAT_BRIEF           = YES
+
+# This tag implements a quasi-intelligent brief description abbreviator that is
+# used to form the text in various listings. Each string in this list, if found
+# as the leading text of the brief description, will be stripped from the text
+# and the result, after processing the whole list, is used as the annotated
+# text. Otherwise, the brief description is used as-is. If left blank, the
+# following values are used ($name is automatically replaced with the name of
+# the entity):The $name class, The $name widget, The $name file, is, provides,
+# specifies, contains, represents, a, an and the.
+
+ABBREVIATE_BRIEF       = "The $name class       " \
+                         "The $name widget       " \
+                         "The $name file       " \
+                         is \
+                         provides \
+                         specifies \
+                         contains \
+                         represents \
+                         a \
+                         an \
+                         the
+
+# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then
+# doxygen will generate a detailed section even if there is only a brief
+# description.
+# The default value is: NO.
+
+ALWAYS_DETAILED_SEC    = NO
+
+# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all
+# inherited members of a class in the documentation of that class as if those
+# members were ordinary class members. Constructors, destructors and assignment
+# operators of the base classes will not be shown.
+# The default value is: NO.
+
+INLINE_INHERITED_MEMB  = NO
+
+# If the FULL_PATH_NAMES tag is set to YES, doxygen will prepend the full path
+# before files name in the file list and in the header files. If set to NO the
+# shortest path that makes the file name unique will be used
+# The default value is: YES.
+
+FULL_PATH_NAMES        = YES
+
+# The STRIP_FROM_PATH tag can be used to strip a user-defined part of the path.
+# Stripping is only done if one of the specified strings matches the left-hand
+# part of the path. The tag can be used to show relative paths in the file list.
+# If left blank the directory from which doxygen is run is used as the path to
+# strip.
+#
+# Note that you can specify absolute paths here, but also relative paths, which
+# will be relative from the directory where doxygen is started.
+# This tag requires that the tag FULL_PATH_NAMES is set to YES.
+
+STRIP_FROM_PATH        = ../../
+
+# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of the
+# path mentioned in the documentation of a class, which tells the reader which
+# header file to include in order to use a class. If left blank only the name of
+# the header file containing the class definition is used. Otherwise one should
+# specify the list of include paths that are normally passed to the compiler
+# using the -I flag.
+
+STRIP_FROM_INC_PATH    =
+
+# If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter (but
+# less readable) file names. This can be useful is your file systems doesn't
+# support long names like on DOS, Mac, or CD-ROM.
+# The default value is: NO.
+
+SHORT_NAMES            = NO
+
+# If the JAVADOC_AUTOBRIEF tag is set to YES then doxygen will interpret the
+# first line (until the first dot) of a Javadoc-style comment as the brief
+# description. If set to NO, the Javadoc-style will behave just like regular Qt-
+# style comments (thus requiring an explicit @brief command for a brief
+# description.)
+# The default value is: NO.
+
+JAVADOC_AUTOBRIEF      = NO
+
+# If the QT_AUTOBRIEF tag is set to YES then doxygen will interpret the first
+# line (until the first dot) of a Qt-style comment as the brief description. If
+# set to NO, the Qt-style will behave just like regular Qt-style comments (thus
+# requiring an explicit \brief command for a brief description.)
+# The default value is: NO.
+
+QT_AUTOBRIEF           = NO
+
+# The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make doxygen treat a
+# multi-line C++ special comment block (i.e. a block of //! or /// comments) as
+# a brief description. This used to be the default behavior. The new default is
+# to treat a multi-line C++ comment block as a detailed description. Set this
+# tag to YES if you prefer the old behavior instead.
+#
+# Note that setting this tag to YES also means that rational rose comments are
+# not recognized any more.
+# The default value is: NO.
+
+MULTILINE_CPP_IS_BRIEF = NO
+
+# If the INHERIT_DOCS tag is set to YES then an undocumented member inherits the
+# documentation from any documented member that it re-implements.
+# The default value is: YES.
+
+INHERIT_DOCS           = YES
+
+# If the SEPARATE_MEMBER_PAGES tag is set to YES then doxygen will produce a new
+# page for each member. If set to NO, the documentation of a member will be part
+# of the file/class/namespace that contains it.
+# The default value is: NO.
+
+SEPARATE_MEMBER_PAGES  = NO
+
+# The TAB_SIZE tag can be used to set the number of spaces in a tab. Doxygen
+# uses this value to replace tabs by spaces in code fragments.
+# Minimum value: 1, maximum value: 16, default value: 4.
+
+TAB_SIZE               = 8
+
+# This tag can be used to specify a number of aliases that act as commands in
+# the documentation. An alias has the form:
+# name=value
+# For example adding
+# "sideeffect=@par Side Effects:\n"
+# will allow you to put the command \sideeffect (or @sideeffect) in the
+# documentation, which will result in a user-defined paragraph with heading
+# "Side Effects:". You can put \n's in the value part of an alias to insert
+# newlines.
+
+ALIASES                =
+
+# This tag can be used to specify a number of word-keyword mappings (TCL only).
+# A mapping has the form "name=value". For example adding "class=itcl::class"
+# will allow you to use the command class in the itcl::class meaning.
+
+TCL_SUBST              =
+
+# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C sources
+# only. Doxygen will then generate output that is more tailored for C. For
+# instance, some of the names that are used will be different. The list of all
+# members will be omitted, etc.
+# The default value is: NO.
+
+OPTIMIZE_OUTPUT_FOR_C  = YES
+
+# Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java or
+# Python sources only. Doxygen will then generate output that is more tailored
+# for that language. For instance, namespaces will be presented as packages,
+# qualified scopes will look different, etc.
+# The default value is: NO.
+
+OPTIMIZE_OUTPUT_JAVA   = NO
+
+# Set the OPTIMIZE_FOR_FORTRAN tag to YES if your project consists of Fortran
+# sources. Doxygen will then generate output that is tailored for Fortran.
+# The default value is: NO.
+
+OPTIMIZE_FOR_FORTRAN   = NO
+
+# Set the OPTIMIZE_OUTPUT_VHDL tag to YES if your project consists of VHDL
+# sources. Doxygen will then generate output that is tailored for VHDL.
+# The default value is: NO.
+
+OPTIMIZE_OUTPUT_VHDL   = NO
+
+# Doxygen selects the parser to use depending on the extension of the files it
+# parses. With this tag you can assign which parser to use for a given
+# extension. Doxygen has a built-in mapping, but you can override or extend it
+# using this tag. The format is ext=language, where ext is a file extension, and
+# language is one of the parsers supported by doxygen: IDL, Java, Javascript,
+# C#, C, C++, D, PHP, Objective-C, Python, Fortran (fixed format Fortran:
+# FortranFixed, free formatted Fortran: FortranFree, unknown formatted Fortran:
+# Fortran. In the later case the parser tries to guess whether the code is fixed
+# or free formatted code, this is the default for Fortran type files), VHDL. For
+# instance to make doxygen treat .inc files as Fortran files (default is PHP),
+# and .f files as C (default is Fortran), use: inc=Fortran f=C.
+#
+# Note: For files without extension you can use no_extension as a placeholder.
+#
+# Note that for custom extensions you also need to set FILE_PATTERNS otherwise
+# the files are not read by doxygen.
+
+EXTENSION_MAPPING      =
+
+# If the MARKDOWN_SUPPORT tag is enabled then doxygen pre-processes all comments
+# according to the Markdown format, which allows for more readable
+# documentation. See http://daringfireball.net/projects/markdown/ for details.
+# The output of markdown processing is further processed by doxygen, so you can
+# mix doxygen, HTML, and XML commands with Markdown formatting. Disable only in
+# case of backward compatibilities issues.
+# The default value is: YES.
+
+MARKDOWN_SUPPORT       = YES
+
+# When the TOC_INCLUDE_HEADINGS tag is set to a non-zero value, all headings up
+# to that level are automatically included in the table of contents, even if
+# they do not have an id attribute.
+# Note: This feature currently applies only to Markdown headings.
+# Minimum value: 0, maximum value: 99, default value: 0.
+# This tag requires that the tag MARKDOWN_SUPPORT is set to YES.
+
+TOC_INCLUDE_HEADINGS   = 0
+
+# When enabled doxygen tries to link words that correspond to documented
+# classes, or namespaces to their corresponding documentation. Such a link can
+# be prevented in individual cases by putting a % sign in front of the word or
+# globally by setting AUTOLINK_SUPPORT to NO.
+# The default value is: YES.
+
+AUTOLINK_SUPPORT       = YES
+
+# If you use STL classes (i.e. std::string, std::vector, etc.) but do not want
+# to include (a tag file for) the STL sources as input, then you should set this
+# tag to YES in order to let doxygen match functions declarations and
+# definitions whose arguments contain STL classes (e.g. func(std::string);
+# versus func(std::string) {}). This also make the inheritance and collaboration
+# diagrams that involve STL classes more complete and accurate.
+# The default value is: NO.
+
+BUILTIN_STL_SUPPORT    = NO
+
+# If you use Microsoft's C++/CLI language, you should set this option to YES to
+# enable parsing support.
+# The default value is: NO.
+
+CPP_CLI_SUPPORT        = NO
+
+# Set the SIP_SUPPORT tag to YES if your project consists of sip (see:
+# http://www.riverbankcomputing.co.uk/software/sip/intro) sources only. Doxygen
+# will parse them like normal C++ but will assume all classes use public instead
+# of private inheritance when no explicit protection keyword is present.
+# The default value is: NO.
+
+SIP_SUPPORT            = NO
+
+# For Microsoft's IDL there are propget and propput attributes to indicate
+# getter and setter methods for a property. Setting this option to YES will make
+# doxygen to replace the get and set methods by a property in the documentation.
+# This will only work if the methods are indeed getting or setting a simple
+# type. If this is not the case, or you want to show the methods anyway, you
+# should set this option to NO.
+# The default value is: YES.
+
+IDL_PROPERTY_SUPPORT   = YES
+
+# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC
+# tag is set to YES then doxygen will reuse the documentation of the first
+# member in the group (if any) for the other members of the group. By default
+# all members of a group must be documented explicitly.
+# The default value is: NO.
+
+DISTRIBUTE_GROUP_DOC   = NO
+
+# If one adds a struct or class to a group and this option is enabled, then also
+# any nested class or struct is added to the same group. By default this option
+# is disabled and one has to add nested compounds explicitly via \ingroup.
+# The default value is: NO.
+
+GROUP_NESTED_COMPOUNDS = NO
+
+# Set the SUBGROUPING tag to YES to allow class member groups of the same type
+# (for instance a group of public functions) to be put as a subgroup of that
+# type (e.g. under the Public Functions section). Set it to NO to prevent
+# subgrouping. Alternatively, this can be done per class using the
+# \nosubgrouping command.
+# The default value is: YES.
+
+SUBGROUPING            = YES
+
+# When the INLINE_GROUPED_CLASSES tag is set to YES, classes, structs and unions
+# are shown inside the group in which they are included (e.g. using \ingroup)
+# instead of on a separate page (for HTML and Man pages) or section (for LaTeX
+# and RTF).
+#
+# Note that this feature does not work in combination with
+# SEPARATE_MEMBER_PAGES.
+# The default value is: NO.
+
+INLINE_GROUPED_CLASSES = NO
+
+# When the INLINE_SIMPLE_STRUCTS tag is set to YES, structs, classes, and unions
+# with only public data fields or simple typedef fields will be shown inline in
+# the documentation of the scope in which they are defined (i.e. file,
+# namespace, or group documentation), provided this scope is documented. If set
+# to NO, structs, classes, and unions are shown on a separate page (for HTML and
+# Man pages) or section (for LaTeX and RTF).
+# The default value is: NO.
+
+INLINE_SIMPLE_STRUCTS  = NO
+
+# When TYPEDEF_HIDES_STRUCT tag is enabled, a typedef of a struct, union, or
+# enum is documented as struct, union, or enum with the name of the typedef. So
+# typedef struct TypeS {} TypeT, will appear in the documentation as a struct
+# with name TypeT. When disabled the typedef will appear as a member of a file,
+# namespace, or class. And the struct will be named TypeS. This can typically be
+# useful for C code in case the coding convention dictates that all compound
+# types are typedef'ed and only the typedef is referenced, never the tag name.
+# The default value is: NO.
+
+TYPEDEF_HIDES_STRUCT   = NO
+
+# The size of the symbol lookup cache can be set using LOOKUP_CACHE_SIZE. This
+# cache is used to resolve symbols given their name and scope. Since this can be
+# an expensive process and often the same symbol appears multiple times in the
+# code, doxygen keeps a cache of pre-resolved symbols. If the cache is too small
+# doxygen will become slower. If the cache is too large, memory is wasted. The
+# cache size is given by this formula: 2^(16+LOOKUP_CACHE_SIZE). The valid range
+# is 0..9, the default is 0, corresponding to a cache size of 2^16=65536
+# symbols. At the end of a run doxygen will report the cache usage and suggest
+# the optimal cache size from a speed point of view.
+# Minimum value: 0, maximum value: 9, default value: 0.
+
+LOOKUP_CACHE_SIZE      = 0
+
+#---------------------------------------------------------------------------
+# Build related configuration options
+#---------------------------------------------------------------------------
+
+# If the EXTRACT_ALL tag is set to YES, doxygen will assume all entities in
+# documentation are documented, even if no documentation was available. Private
+# class members and static file members will be hidden unless the
+# EXTRACT_PRIVATE respectively EXTRACT_STATIC tags are set to YES.
+# Note: This will also disable the warnings about undocumented members that are
+# normally produced when WARNINGS is set to YES.
+# The default value is: NO.
+
+EXTRACT_ALL            = NO
+
+# If the EXTRACT_PRIVATE tag is set to YES, all private members of a class will
+# be included in the documentation.
+# The default value is: NO.
+
+EXTRACT_PRIVATE        = NO
+
+# If the EXTRACT_PACKAGE tag is set to YES, all members with package or internal
+# scope will be included in the documentation.
+# The default value is: NO.
+
+EXTRACT_PACKAGE        = NO
+
+# If the EXTRACT_STATIC tag is set to YES, all static members of a file will be
+# included in the documentation.
+# The default value is: NO.
+
+EXTRACT_STATIC         = NO
+
+# If the EXTRACT_LOCAL_CLASSES tag is set to YES, classes (and structs) defined
+# locally in source files will be included in the documentation. If set to NO,
+# only classes defined in header files are included. Does not have any effect
+# for Java sources.
+# The default value is: YES.
+
+EXTRACT_LOCAL_CLASSES  = YES
+
+# This flag is only useful for Objective-C code. If set to YES, local methods,
+# which are defined in the implementation section but not in the interface are
+# included in the documentation. If set to NO, only methods in the interface are
+# included.
+# The default value is: NO.
+
+EXTRACT_LOCAL_METHODS  = NO
+
+# If this flag is set to YES, the members of anonymous namespaces will be
+# extracted and appear in the documentation as a namespace called
+# 'anonymous_namespace{file}', where file will be replaced with the base name of
+# the file that contains the anonymous namespace. By default anonymous namespace
+# are hidden.
+# The default value is: NO.
+
+EXTRACT_ANON_NSPACES   = NO
+
+# If the HIDE_UNDOC_MEMBERS tag is set to YES, doxygen will hide all
+# undocumented members inside documented classes or files. If set to NO these
+# members will be included in the various overviews, but no documentation
+# section is generated. This option has no effect if EXTRACT_ALL is enabled.
+# The default value is: NO.
+
+HIDE_UNDOC_MEMBERS     = YES
+
+# If the HIDE_UNDOC_CLASSES tag is set to YES, doxygen will hide all
+# undocumented classes that are normally visible in the class hierarchy. If set
+# to NO, these classes will be included in the various overviews. This option
+# has no effect if EXTRACT_ALL is enabled.
+# The default value is: NO.
+
+HIDE_UNDOC_CLASSES     = YES
+
+# If the HIDE_FRIEND_COMPOUNDS tag is set to YES, doxygen will hide all friend
+# (class|struct|union) declarations. If set to NO, these declarations will be
+# included in the documentation.
+# The default value is: NO.
+
+HIDE_FRIEND_COMPOUNDS  = NO
+
+# If the HIDE_IN_BODY_DOCS tag is set to YES, doxygen will hide any
+# documentation blocks found inside the body of a function. If set to NO, these
+# blocks will be appended to the function's detailed documentation block.
+# The default value is: NO.
+
+HIDE_IN_BODY_DOCS      = NO
+
+# The INTERNAL_DOCS tag determines if documentation that is typed after a
+# \internal command is included. If the tag is set to NO then the documentation
+# will be excluded. Set it to YES to include the internal documentation.
+# The default value is: NO.
+
+INTERNAL_DOCS          = NO
+
+# If the CASE_SENSE_NAMES tag is set to NO then doxygen will only generate file
+# names in lower-case letters. If set to YES, upper-case letters are also
+# allowed. This is useful if you have classes or files whose names only differ
+# in case and if your file system supports case sensitive file names. Windows
+# and Mac users are advised to set this option to NO.
+# The default value is: system dependent.
+
+CASE_SENSE_NAMES       = NO
+
+# If the HIDE_SCOPE_NAMES tag is set to NO then doxygen will show members with
+# their full class and namespace scopes in the documentation. If set to YES, the
+# scope will be hidden.
+# The default value is: NO.
+
+HIDE_SCOPE_NAMES       = NO
+
+# If the HIDE_COMPOUND_REFERENCE tag is set to NO (default) then doxygen will
+# append additional text to a page's title, such as Class Reference. If set to
+# YES the compound reference will be hidden.
+# The default value is: NO.
+
+HIDE_COMPOUND_REFERENCE= NO
+
+# If the SHOW_INCLUDE_FILES tag is set to YES then doxygen will put a list of
+# the files that are included by a file in the documentation of that file.
+# The default value is: YES.
+
+SHOW_INCLUDE_FILES     = YES
+
+# If the SHOW_GROUPED_MEMB_INC tag is set to YES then Doxygen will add for each
+# grouped member an include statement to the documentation, telling the reader
+# which file to include in order to use the member.
+# The default value is: NO.
+
+SHOW_GROUPED_MEMB_INC  = NO
+
+# If the FORCE_LOCAL_INCLUDES tag is set to YES then doxygen will list include
+# files with double quotes in the documentation rather than with sharp brackets.
+# The default value is: NO.
+
+FORCE_LOCAL_INCLUDES   = NO
+
+# If the INLINE_INFO tag is set to YES then a tag [inline] is inserted in the
+# documentation for inline members.
+# The default value is: YES.
+
+INLINE_INFO            = YES
+
+# If the SORT_MEMBER_DOCS tag is set to YES then doxygen will sort the
+# (detailed) documentation of file and class members alphabetically by member
+# name. If set to NO, the members will appear in declaration order.
+# The default value is: YES.
+
+SORT_MEMBER_DOCS       = YES
+
+# If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the brief
+# descriptions of file, namespace and class members alphabetically by member
+# name. If set to NO, the members will appear in declaration order. Note that
+# this will also influence the order of the classes in the class list.
+# The default value is: NO.
+
+SORT_BRIEF_DOCS        = NO
+
+# If the SORT_MEMBERS_CTORS_1ST tag is set to YES then doxygen will sort the
+# (brief and detailed) documentation of class members so that constructors and
+# destructors are listed first. If set to NO the constructors will appear in the
+# respective orders defined by SORT_BRIEF_DOCS and SORT_MEMBER_DOCS.
+# Note: If SORT_BRIEF_DOCS is set to NO this option is ignored for sorting brief
+# member documentation.
+# Note: If SORT_MEMBER_DOCS is set to NO this option is ignored for sorting
+# detailed member documentation.
+# The default value is: NO.
+
+SORT_MEMBERS_CTORS_1ST = NO
+
+# If the SORT_GROUP_NAMES tag is set to YES then doxygen will sort the hierarchy
+# of group names into alphabetical order. If set to NO the group names will
+# appear in their defined order.
+# The default value is: NO.
+
+SORT_GROUP_NAMES       = NO
+
+# If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be sorted by
+# fully-qualified names, including namespaces. If set to NO, the class list will
+# be sorted only by class name, not including the namespace part.
+# Note: This option is not very useful if HIDE_SCOPE_NAMES is set to YES.
+# Note: This option applies only to the class list, not to the alphabetical
+# list.
+# The default value is: NO.
+
+SORT_BY_SCOPE_NAME     = NO
+
+# If the STRICT_PROTO_MATCHING option is enabled and doxygen fails to do proper
+# type resolution of all parameters of a function it will reject a match between
+# the prototype and the implementation of a member function even if there is
+# only one candidate or it is obvious which candidate to choose by doing a
+# simple string match. By disabling STRICT_PROTO_MATCHING doxygen will still
+# accept a match between prototype and implementation in such cases.
+# The default value is: NO.
+
+STRICT_PROTO_MATCHING  = NO
+
+# The GENERATE_TODOLIST tag can be used to enable (YES) or disable (NO) the todo
+# list. This list is created by putting \todo commands in the documentation.
+# The default value is: YES.
+
+GENERATE_TODOLIST      = NO
+
+# The GENERATE_TESTLIST tag can be used to enable (YES) or disable (NO) the test
+# list. This list is created by putting \test commands in the documentation.
+# The default value is: YES.
+
+GENERATE_TESTLIST      = YES
+
+# The GENERATE_BUGLIST tag can be used to enable (YES) or disable (NO) the bug
+# list. This list is created by putting \bug commands in the documentation.
+# The default value is: YES.
+
+GENERATE_BUGLIST       = YES
+
+# The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or disable (NO)
+# the deprecated list. This list is created by putting \deprecated commands in
+# the documentation.
+# The default value is: YES.
+
+GENERATE_DEPRECATEDLIST= YES
+
+# The ENABLED_SECTIONS tag can be used to enable conditional documentation
+# sections, marked by \if <section_label> ... \endif and \cond <section_label>
+# ... \endcond blocks.
+
+ENABLED_SECTIONS       =
+
+# The MAX_INITIALIZER_LINES tag determines the maximum number of lines that the
+# initial value of a variable or macro / define can have for it to appear in the
+# documentation. If the initializer consists of more lines than specified here
+# it will be hidden. Use a value of 0 to hide initializers completely. The
+# appearance of the value of individual variables and macros / defines can be
+# controlled using \showinitializer or \hideinitializer command in the
+# documentation regardless of this setting.
+# Minimum value: 0, maximum value: 10000, default value: 30.
+
+MAX_INITIALIZER_LINES  = 30
+
+# Set the SHOW_USED_FILES tag to NO to disable the list of files generated at
+# the bottom of the documentation of classes and structs. If set to YES, the
+# list will mention the files that were used to generate the documentation.
+# The default value is: YES.
+
+SHOW_USED_FILES        = YES
+
+# Set the SHOW_FILES tag to NO to disable the generation of the Files page. This
+# will remove the Files entry from the Quick Index and from the Folder Tree View
+# (if specified).
+# The default value is: YES.
+
+SHOW_FILES             = YES
+
+# Set the SHOW_NAMESPACES tag to NO to disable the generation of the Namespaces
+# page. This will remove the Namespaces entry from the Quick Index and from the
+# Folder Tree View (if specified).
+# The default value is: YES.
+
+SHOW_NAMESPACES        = YES
+
+# The FILE_VERSION_FILTER tag can be used to specify a program or script that
+# doxygen should invoke to get the current version for each file (typically from
+# the version control system). Doxygen will invoke the program by executing (via
+# popen()) the command command input-file, where command is the value of the
+# FILE_VERSION_FILTER tag, and input-file is the name of an input file provided
+# by doxygen. Whatever the program writes to standard output is used as the file
+# version. For an example see the documentation.
+
+FILE_VERSION_FILTER    =
+
+# The LAYOUT_FILE tag can be used to specify a layout file which will be parsed
+# by doxygen. The layout file controls the global structure of the generated
+# output files in an output format independent way. To create the layout file
+# that represents doxygen's defaults, run doxygen with the -l option. You can
+# optionally specify a file name after the option, if omitted DoxygenLayout.xml
+# will be used as the name of the layout file.
+#
+# Note that if you run doxygen from a directory containing a file called
+# DoxygenLayout.xml, doxygen will parse it automatically even if the LAYOUT_FILE
+# tag is left empty.
+
+LAYOUT_FILE            =
+
+# The CITE_BIB_FILES tag can be used to specify one or more bib files containing
+# the reference definitions. This must be a list of .bib files. The .bib
+# extension is automatically appended if omitted. This requires the bibtex tool
+# to be installed. See also http://en.wikipedia.org/wiki/BibTeX for more info.
+# For LaTeX the style of the bibliography can be controlled using
+# LATEX_BIB_STYLE. To use this feature you need bibtex and perl available in the
+# search path. See also \cite for info how to create references.
+
+CITE_BIB_FILES         =
+
+#---------------------------------------------------------------------------
+# Configuration options related to warning and progress messages
+#---------------------------------------------------------------------------
+
+# The QUIET tag can be used to turn on/off the messages that are generated to
+# standard output by doxygen. If QUIET is set to YES this implies that the
+# messages are off.
+# The default value is: NO.
+
+QUIET                  = NO
+
+# The WARNINGS tag can be used to turn on/off the warning messages that are
+# generated to standard error (stderr) by doxygen. If WARNINGS is set to YES
+# this implies that the warnings are on.
+#
+# Tip: Turn warnings on while writing the documentation.
+# The default value is: YES.
+
+WARNINGS               = YES
+
+# If the WARN_IF_UNDOCUMENTED tag is set to YES then doxygen will generate
+# warnings for undocumented members. If EXTRACT_ALL is set to YES then this flag
+# will automatically be disabled.
+# The default value is: YES.
+
+WARN_IF_UNDOCUMENTED   = YES
+
+# If the WARN_IF_DOC_ERROR tag is set to YES, doxygen will generate warnings for
+# potential errors in the documentation, such as not documenting some parameters
+# in a documented function, or documenting parameters that don't exist or using
+# markup commands wrongly.
+# The default value is: YES.
+
+WARN_IF_DOC_ERROR      = YES
+
+# This WARN_NO_PARAMDOC option can be enabled to get warnings for functions that
+# are documented, but have no documentation for their parameters or return
+# value. If set to NO, doxygen will only warn about wrong or incomplete
+# parameter documentation, but not about the absence of documentation.
+# The default value is: NO.
+
+WARN_NO_PARAMDOC       = NO
+
+# If the WARN_AS_ERROR tag is set to YES then doxygen will immediately stop when
+# a warning is encountered.
+# The default value is: NO.
+
+WARN_AS_ERROR          = NO
+
+# The WARN_FORMAT tag determines the format of the warning messages that doxygen
+# can produce. The string should contain the $file, $line, and $text tags, which
+# will be replaced by the file and line number from which the warning originated
+# and the warning text. Optionally the format may contain $version, which will
+# be replaced by the version of the file (if it could be obtained via
+# FILE_VERSION_FILTER)
+# The default value is: $file:$line: $text.
+
+WARN_FORMAT            = "$file:$line: $text       "
+
+# The WARN_LOGFILE tag can be used to specify a file to which warning and error
+# messages should be written. If left blank the output is written to standard
+# error (stderr).
+
+WARN_LOGFILE           =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the input files
+#---------------------------------------------------------------------------
+
+# The INPUT tag is used to specify the files and/or directories that contain
+# documented source files. You may enter file names like myfile.cpp or
+# directories like /usr/src/myproject. Separate the files or directories with
+# spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
+# Note: If this tag is empty the current directory is searched.
+
+INPUT                  = main_page.h \
+                         ../../src
+
+# This tag can be used to specify the character encoding of the source files
+# that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
+# libiconv (or the iconv built into libc) for the transcoding. See the libiconv
+# documentation (see: http://www.gnu.org/software/libiconv) for the list of
+# possible encodings.
+# The default value is: UTF-8.
+
+INPUT_ENCODING         = UTF-8
+
+# If the value of the INPUT tag contains directories, you can use the
+# FILE_PATTERNS tag to specify one or more wildcard patterns (like *.cpp and
+# *.h) to filter out the source-files in the directories.
+#
+# Note that for custom extensions or not directly supported extensions you also
+# need to set EXTENSION_MAPPING for the extension otherwise the files are not
+# read by doxygen.
+#
+# If left blank the following patterns are tested:*.c, *.cc, *.cxx, *.cpp,
+# *.c++, *.java, *.ii, *.ixx, *.ipp, *.i++, *.inl, *.idl, *.ddl, *.odl, *.h,
+# *.hh, *.hxx, *.hpp, *.h++, *.cs, *.d, *.php, *.php4, *.php5, *.phtml, *.inc,
+# *.m, *.markdown, *.md, *.mm, *.dox, *.py, *.pyw, *.f90, *.f95, *.f03, *.f08,
+# *.f, *.for, *.tcl, *.vhd, *.vhdl, *.ucf and *.qsf.
+
+FILE_PATTERNS          = *.c \
+                         *.cc \
+                         *.cxx \
+                         *.cpp \
+                         *.c++ \
+                         *.java \
+                         *.ii \
+                         *.ixx \
+                         *.ipp \
+                         *.i++ \
+                         *.inl \
+                         *.h \
+                         *.hh \
+                         *.hxx \
+                         *.hpp \
+                         *.h++ \
+                         *.idl \
+                         *.odl \
+                         *.inc \
+                         *.m \
+                         *.mm \
+                         *.dox
+
+# The RECURSIVE tag can be used to specify whether or not subdirectories should
+# be searched for input files as well.
+# The default value is: NO.
+
+RECURSIVE              = YES
+
+# The EXCLUDE tag can be used to specify files and/or directories that should be
+# excluded from the INPUT source files. This way you can easily exclude a
+# subdirectory from a directory tree whose root is specified with the INPUT tag.
+#
+# Note that relative paths are relative to the directory from which doxygen is
+# run.
+
+EXCLUDE                = ../../src/include/netif/ppp/polarssl
+
+# The EXCLUDE_SYMLINKS tag can be used to select whether or not files or
+# directories that are symbolic links (a Unix file system feature) are excluded
+# from the input.
+# The default value is: NO.
+
+EXCLUDE_SYMLINKS       = NO
+
+# If the value of the INPUT tag contains directories, you can use the
+# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude
+# certain files from those directories.
+#
+# Note that the wildcards are matched against the file with absolute path, so to
+# exclude all test directories for example use the pattern */test/*
+
+EXCLUDE_PATTERNS       =
+
+# The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names
+# (namespaces, classes, functions, etc.) that should be excluded from the
+# output. The symbol name can be a fully qualified name, a word, or if the
+# wildcard * is used, a substring. Examples: ANamespace, AClass,
+# AClass::ANamespace, ANamespace::*Test
+#
+# Note that the wildcards are matched against the file with absolute path, so to
+# exclude all test directories use the pattern */test/*
+
+EXCLUDE_SYMBOLS        =
+
+# The EXAMPLE_PATH tag can be used to specify one or more files or directories
+# that contain example code fragments that are included (see the \include
+# command).
+
+EXAMPLE_PATH           = ../ \
+                         ../../
+
+# If the value of the EXAMPLE_PATH tag contains directories, you can use the
+# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp and
+# *.h) to filter out the source-files in the directories. If left blank all
+# files are included.
+
+EXAMPLE_PATTERNS       = *
+
+# If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be
+# searched for input files to be used with the \include or \dontinclude commands
+# irrespective of the value of the RECURSIVE tag.
+# The default value is: NO.
+
+EXAMPLE_RECURSIVE      = NO
+
+# The IMAGE_PATH tag can be used to specify one or more files or directories
+# that contain images that are to be included in the documentation (see the
+# \image command).
+
+IMAGE_PATH             =
+
+# The INPUT_FILTER tag can be used to specify a program that doxygen should
+# invoke to filter for each input file. Doxygen will invoke the filter program
+# by executing (via popen()) the command:
+#
+# <filter> <input-file>
+#
+# where <filter> is the value of the INPUT_FILTER tag, and <input-file> is the
+# name of an input file. Doxygen will then use the output that the filter
+# program writes to standard output. If FILTER_PATTERNS is specified, this tag
+# will be ignored.
+#
+# Note that the filter must not add or remove lines; it is applied before the
+# code is scanned, but not when the output code is generated. If lines are added
+# or removed, the anchors will not be placed correctly.
+#
+# Note that for custom extensions or not directly supported extensions you also
+# need to set EXTENSION_MAPPING for the extension otherwise the files are not
+# properly processed by doxygen.
+
+INPUT_FILTER           =
+
+# The FILTER_PATTERNS tag can be used to specify filters on a per file pattern
+# basis. Doxygen will compare the file name with each pattern and apply the
+# filter if there is a match. The filters are a list of the form: pattern=filter
+# (like *.cpp=my_cpp_filter). See INPUT_FILTER for further information on how
+# filters are used. If the FILTER_PATTERNS tag is empty or if none of the
+# patterns match the file name, INPUT_FILTER is applied.
+#
+# Note that for custom extensions or not directly supported extensions you also
+# need to set EXTENSION_MAPPING for the extension otherwise the files are not
+# properly processed by doxygen.
+
+FILTER_PATTERNS        =
+
+# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using
+# INPUT_FILTER) will also be used to filter the input files that are used for
+# producing the source files to browse (i.e. when SOURCE_BROWSER is set to YES).
+# The default value is: NO.
+
+FILTER_SOURCE_FILES    = NO
+
+# The FILTER_SOURCE_PATTERNS tag can be used to specify source filters per file
+# pattern. A pattern will override the setting for FILTER_PATTERN (if any) and
+# it is also possible to disable source filtering for a specific pattern using
+# *.ext= (so without naming a filter).
+# This tag requires that the tag FILTER_SOURCE_FILES is set to YES.
+
+FILTER_SOURCE_PATTERNS =
+
+# If the USE_MDFILE_AS_MAINPAGE tag refers to the name of a markdown file that
+# is part of the input, its contents will be placed on the main page
+# (index.html). This can be useful if you have a project on for instance GitHub
+# and want to reuse the introduction page also for the doxygen output.
+
+USE_MDFILE_AS_MAINPAGE = main_page.h
+
+#---------------------------------------------------------------------------
+# Configuration options related to source browsing
+#---------------------------------------------------------------------------
+
+# If the SOURCE_BROWSER tag is set to YES then a list of source files will be
+# generated. Documented entities will be cross-referenced with these sources.
+#
+# Note: To get rid of all source code in the generated output, make sure that
+# also VERBATIM_HEADERS is set to NO.
+# The default value is: NO.
+
+SOURCE_BROWSER         = NO
+
+# Setting the INLINE_SOURCES tag to YES will include the body of functions,
+# classes and enums directly into the documentation.
+# The default value is: NO.
+
+INLINE_SOURCES         = NO
+
+# Setting the STRIP_CODE_COMMENTS tag to YES will instruct doxygen to hide any
+# special comment blocks from generated source code fragments. Normal C, C++ and
+# Fortran comments will always remain visible.
+# The default value is: YES.
+
+STRIP_CODE_COMMENTS    = YES
+
+# If the REFERENCED_BY_RELATION tag is set to YES then for each documented
+# function all documented functions referencing it will be listed.
+# The default value is: NO.
+
+REFERENCED_BY_RELATION = NO
+
+# If the REFERENCES_RELATION tag is set to YES then for each documented function
+# all documented entities called/used by that function will be listed.
+# The default value is: NO.
+
+REFERENCES_RELATION    = NO
+
+# If the REFERENCES_LINK_SOURCE tag is set to YES and SOURCE_BROWSER tag is set
+# to YES then the hyperlinks from functions in REFERENCES_RELATION and
+# REFERENCED_BY_RELATION lists will link to the source code. Otherwise they will
+# link to the documentation.
+# The default value is: YES.
+
+REFERENCES_LINK_SOURCE = YES
+
+# If SOURCE_TOOLTIPS is enabled (the default) then hovering a hyperlink in the
+# source code will show a tooltip with additional information such as prototype,
+# brief description and links to the definition and documentation. Since this
+# will make the HTML file larger and loading of large files a bit slower, you
+# can opt to disable this feature.
+# The default value is: YES.
+# This tag requires that the tag SOURCE_BROWSER is set to YES.
+
+SOURCE_TOOLTIPS        = YES
+
+# If the USE_HTAGS tag is set to YES then the references to source code will
+# point to the HTML generated by the htags(1) tool instead of doxygen built-in
+# source browser. The htags tool is part of GNU's global source tagging system
+# (see http://www.gnu.org/software/global/global.html). You will need version
+# 4.8.6 or higher.
+#
+# To use it do the following:
+# - Install the latest version of global
+# - Enable SOURCE_BROWSER and USE_HTAGS in the config file
+# - Make sure the INPUT points to the root of the source tree
+# - Run doxygen as normal
+#
+# Doxygen will invoke htags (and that will in turn invoke gtags), so these
+# tools must be available from the command line (i.e. in the search path).
+#
+# The result: instead of the source browser generated by doxygen, the links to
+# source code will now point to the output of htags.
+# The default value is: NO.
+# This tag requires that the tag SOURCE_BROWSER is set to YES.
+
+USE_HTAGS              = NO
+
+# If the VERBATIM_HEADERS tag is set the YES then doxygen will generate a
+# verbatim copy of the header file for each class for which an include is
+# specified. Set to NO to disable this.
+# See also: Section \class.
+# The default value is: YES.
+
+VERBATIM_HEADERS       = NO
+
+# If the CLANG_ASSISTED_PARSING tag is set to YES then doxygen will use the
+# clang parser (see: http://clang.llvm.org/) for more accurate parsing at the
+# cost of reduced performance. This can be particularly helpful with template
+# rich C++ code for which doxygen's built-in parser lacks the necessary type
+# information.
+# Note: The availability of this option depends on whether or not doxygen was
+# generated with the -Duse-libclang=ON option for CMake.
+# The default value is: NO.
+
+CLANG_ASSISTED_PARSING = NO
+
+# If clang assisted parsing is enabled you can provide the compiler with command
+# line options that you would normally use when invoking the compiler. Note that
+# the include paths will already be set by doxygen for the files and directories
+# specified with INPUT and INCLUDE_PATH.
+# This tag requires that the tag CLANG_ASSISTED_PARSING is set to YES.
+
+CLANG_OPTIONS          =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the alphabetical class index
+#---------------------------------------------------------------------------
+
+# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index of all
+# compounds will be generated. Enable this if the project contains a lot of
+# classes, structs, unions or interfaces.
+# The default value is: YES.
+
+ALPHABETICAL_INDEX     = NO
+
+# The COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns in
+# which the alphabetical index list will be split.
+# Minimum value: 1, maximum value: 20, default value: 5.
+# This tag requires that the tag ALPHABETICAL_INDEX is set to YES.
+
+COLS_IN_ALPHA_INDEX    = 5
+
+# In case all classes in a project start with a common prefix, all classes will
+# be put under the same header in the alphabetical index. The IGNORE_PREFIX tag
+# can be used to specify a prefix (or a list of prefixes) that should be ignored
+# while generating the index headers.
+# This tag requires that the tag ALPHABETICAL_INDEX is set to YES.
+
+IGNORE_PREFIX          =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the HTML output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_HTML tag is set to YES, doxygen will generate HTML output
+# The default value is: YES.
+
+GENERATE_HTML          = YES
+
+# The HTML_OUTPUT tag is used to specify where the HTML docs will be put. If a
+# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
+# it.
+# The default directory is: html.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_OUTPUT            = html
+
+# The HTML_FILE_EXTENSION tag can be used to specify the file extension for each
+# generated HTML page (for example: .htm, .php, .asp).
+# The default value is: .html.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_FILE_EXTENSION    = .html
+
+# The HTML_HEADER tag can be used to specify a user-defined HTML header file for
+# each generated HTML page. If the tag is left blank doxygen will generate a
+# standard header.
+#
+# To get valid HTML the header file that includes any scripts and style sheets
+# that doxygen needs, which is dependent on the configuration options used (e.g.
+# the setting GENERATE_TREEVIEW). It is highly recommended to start with a
+# default header using
+# doxygen -w html new_header.html new_footer.html new_stylesheet.css
+# YourConfigFile
+# and then modify the file new_header.html. See also section "Doxygen usage"
+# for information on how to generate the default header that doxygen normally
+# uses.
+# Note: The header is subject to change so you typically have to regenerate the
+# default header when upgrading to a newer version of doxygen. For a description
+# of the possible markers and block names see the documentation.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_HEADER            =
+
+# The HTML_FOOTER tag can be used to specify a user-defined HTML footer for each
+# generated HTML page. If the tag is left blank doxygen will generate a standard
+# footer. See HTML_HEADER for more information on how to generate a default
+# footer and what special commands can be used inside the footer. See also
+# section "Doxygen usage" for information on how to generate the default footer
+# that doxygen normally uses.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_FOOTER            =
+
+# The HTML_STYLESHEET tag can be used to specify a user-defined cascading style
+# sheet that is used by each HTML page. It can be used to fine-tune the look of
+# the HTML output. If left blank doxygen will generate a default style sheet.
+# See also section "Doxygen usage" for information on how to generate the style
+# sheet that doxygen normally uses.
+# Note: It is recommended to use HTML_EXTRA_STYLESHEET instead of this tag, as
+# it is more robust and this tag (HTML_STYLESHEET) will in the future become
+# obsolete.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_STYLESHEET        =
+
+# The HTML_EXTRA_STYLESHEET tag can be used to specify additional user-defined
+# cascading style sheets that are included after the standard style sheets
+# created by doxygen. Using this option one can overrule certain style aspects.
+# This is preferred over using HTML_STYLESHEET since it does not replace the
+# standard style sheet and is therefore more robust against future updates.
+# Doxygen will copy the style sheet files to the output directory.
+# Note: The order of the extra style sheet files is of importance (e.g. the last
+# style sheet in the list overrules the setting of the previous ones in the
+# list). For an example see the documentation.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_EXTRA_STYLESHEET  =
+
+# The HTML_EXTRA_FILES tag can be used to specify one or more extra images or
+# other source files which should be copied to the HTML output directory. Note
+# that these files will be copied to the base HTML output directory. Use the
+# $relpath^ marker in the HTML_HEADER and/or HTML_FOOTER files to load these
+# files. In the HTML_STYLESHEET file, use the file name only. Also note that the
+# files will be copied as-is; there are no commands or markers available.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_EXTRA_FILES       =
+
+# The HTML_COLORSTYLE_HUE tag controls the color of the HTML output. Doxygen
+# will adjust the colors in the style sheet and background images according to
+# this color. Hue is specified as an angle on a colorwheel, see
+# http://en.wikipedia.org/wiki/Hue for more information. For instance the value
+# 0 represents red, 60 is yellow, 120 is green, 180 is cyan, 240 is blue, 300
+# purple, and 360 is red again.
+# Minimum value: 0, maximum value: 359, default value: 220.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_COLORSTYLE_HUE    = 220
+
+# The HTML_COLORSTYLE_SAT tag controls the purity (or saturation) of the colors
+# in the HTML output. For a value of 0 the output will use grayscales only. A
+# value of 255 will produce the most vivid colors.
+# Minimum value: 0, maximum value: 255, default value: 100.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_COLORSTYLE_SAT    = 100
+
+# The HTML_COLORSTYLE_GAMMA tag controls the gamma correction applied to the
+# luminance component of the colors in the HTML output. Values below 100
+# gradually make the output lighter, whereas values above 100 make the output
+# darker. The value divided by 100 is the actual gamma applied, so 80 represents
+# a gamma of 0.8, The value 220 represents a gamma of 2.2, and 100 does not
+# change the gamma.
+# Minimum value: 40, maximum value: 240, default value: 80.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_COLORSTYLE_GAMMA  = 80
+
+# If the HTML_TIMESTAMP tag is set to YES then the footer of each generated HTML
+# page will contain the date and time when the page was generated. Setting this
+# to YES can help to show when doxygen was last run and thus if the
+# documentation is up to date.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_TIMESTAMP         = NO
+
+# If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML
+# documentation will contain sections that can be hidden and shown after the
+# page has loaded.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_DYNAMIC_SECTIONS  = NO
+
+# With HTML_INDEX_NUM_ENTRIES one can control the preferred number of entries
+# shown in the various tree structured indices initially; the user can expand
+# and collapse entries dynamically later on. Doxygen will expand the tree to
+# such a level that at most the specified number of entries are visible (unless
+# a fully collapsed tree already exceeds this amount). So setting the number of
+# entries 1 will produce a full collapsed tree by default. 0 is a special value
+# representing an infinite number of entries and will result in a full expanded
+# tree by default.
+# Minimum value: 0, maximum value: 9999, default value: 100.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_INDEX_NUM_ENTRIES = 100
+
+# If the GENERATE_DOCSET tag is set to YES, additional index files will be
+# generated that can be used as input for Apple's Xcode 3 integrated development
+# environment (see: http://developer.apple.com/tools/xcode/), introduced with
+# OSX 10.5 (Leopard). To create a documentation set, doxygen will generate a
+# Makefile in the HTML output directory. Running make will produce the docset in
+# that directory and running make install will install the docset in
+# ~/Library/Developer/Shared/Documentation/DocSets so that Xcode will find it at
+# startup. See http://developer.apple.com/tools/creatingdocsetswithdoxygen.html
+# for more information.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+GENERATE_DOCSET        = NO
+
+# This tag determines the name of the docset feed. A documentation feed provides
+# an umbrella under which multiple documentation sets from a single provider
+# (such as a company or product suite) can be grouped.
+# The default value is: Doxygen generated docs.
+# This tag requires that the tag GENERATE_DOCSET is set to YES.
+
+DOCSET_FEEDNAME        = "Doxygen generated docs"
+
+# This tag specifies a string that should uniquely identify the documentation
+# set bundle. This should be a reverse domain-name style string, e.g.
+# com.mycompany.MyDocSet. Doxygen will append .docset to the name.
+# The default value is: org.doxygen.Project.
+# This tag requires that the tag GENERATE_DOCSET is set to YES.
+
+DOCSET_BUNDLE_ID       = org.doxygen.Project
+
+# The DOCSET_PUBLISHER_ID tag specifies a string that should uniquely identify
+# the documentation publisher. This should be a reverse domain-name style
+# string, e.g. com.mycompany.MyDocSet.documentation.
+# The default value is: org.doxygen.Publisher.
+# This tag requires that the tag GENERATE_DOCSET is set to YES.
+
+DOCSET_PUBLISHER_ID    = org.doxygen.Publisher
+
+# The DOCSET_PUBLISHER_NAME tag identifies the documentation publisher.
+# The default value is: Publisher.
+# This tag requires that the tag GENERATE_DOCSET is set to YES.
+
+DOCSET_PUBLISHER_NAME  = Publisher
+
+# If the GENERATE_HTMLHELP tag is set to YES then doxygen generates three
+# additional HTML index files: index.hhp, index.hhc, and index.hhk. The
+# index.hhp is a project file that can be read by Microsoft's HTML Help Workshop
+# (see: http://www.microsoft.com/en-us/download/details.aspx?id=21138) on
+# Windows.
+#
+# The HTML Help Workshop contains a compiler that can convert all HTML output
+# generated by doxygen into a single compiled HTML file (.chm). Compiled HTML
+# files are now used as the Windows 98 help format, and will replace the old
+# Windows help format (.hlp) on all Windows platforms in the future. Compressed
+# HTML files also contain an index, a table of contents, and you can search for
+# words in the documentation. The HTML workshop also contains a viewer for
+# compressed HTML files.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+GENERATE_HTMLHELP      = NO
+
+# The CHM_FILE tag can be used to specify the file name of the resulting .chm
+# file. You can add a path in front of the file if the result should not be
+# written to the html output directory.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+CHM_FILE               = lwip.chm
+
+# The HHC_LOCATION tag can be used to specify the location (absolute path
+# including file name) of the HTML help compiler (hhc.exe). If non-empty,
+# doxygen will try to run the HTML help compiler on the generated index.hhp.
+# The file has to be specified with full path.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+HHC_LOCATION           =
+
+# The GENERATE_CHI flag controls if a separate .chi index file is generated
+# (YES) or that it should be included in the master .chm file (NO).
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+GENERATE_CHI           = NO
+
+# The CHM_INDEX_ENCODING is used to encode HtmlHelp index (hhk), content (hhc)
+# and project file content.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+CHM_INDEX_ENCODING     =
+
+# The BINARY_TOC flag controls whether a binary table of contents is generated
+# (YES) or a normal table of contents (NO) in the .chm file. Furthermore it
+# enables the Previous and Next buttons.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+BINARY_TOC             = NO
+
+# The TOC_EXPAND flag can be set to YES to add extra items for group members to
+# the table of contents of the HTML help documentation and to the tree view.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+TOC_EXPAND             = NO
+
+# If the GENERATE_QHP tag is set to YES and both QHP_NAMESPACE and
+# QHP_VIRTUAL_FOLDER are set, an additional index file will be generated that
+# can be used as input for Qt's qhelpgenerator to generate a Qt Compressed Help
+# (.qch) of the generated HTML documentation.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+GENERATE_QHP           = NO
+
+# If the QHG_LOCATION tag is specified, the QCH_FILE tag can be used to specify
+# the file name of the resulting .qch file. The path specified is relative to
+# the HTML output folder.
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QCH_FILE               =
+
+# The QHP_NAMESPACE tag specifies the namespace to use when generating Qt Help
+# Project output. For more information please see Qt Help Project / Namespace
+# (see: http://qt-project.org/doc/qt-4.8/qthelpproject.html#namespace).
+# The default value is: org.doxygen.Project.
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHP_NAMESPACE          = org.doxygen.Project
+
+# The QHP_VIRTUAL_FOLDER tag specifies the namespace to use when generating Qt
+# Help Project output. For more information please see Qt Help Project / Virtual
+# Folders (see: http://qt-project.org/doc/qt-4.8/qthelpproject.html#virtual-
+# folders).
+# The default value is: doc.
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHP_VIRTUAL_FOLDER     = doc
+
+# If the QHP_CUST_FILTER_NAME tag is set, it specifies the name of a custom
+# filter to add. For more information please see Qt Help Project / Custom
+# Filters (see: http://qt-project.org/doc/qt-4.8/qthelpproject.html#custom-
+# filters).
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHP_CUST_FILTER_NAME   =
+
+# The QHP_CUST_FILTER_ATTRS tag specifies the list of the attributes of the
+# custom filter to add. For more information please see Qt Help Project / Custom
+# Filters (see: http://qt-project.org/doc/qt-4.8/qthelpproject.html#custom-
+# filters).
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHP_CUST_FILTER_ATTRS  =
+
+# The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this
+# project's filter section matches. Qt Help Project / Filter Attributes (see:
+# http://qt-project.org/doc/qt-4.8/qthelpproject.html#filter-attributes).
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHP_SECT_FILTER_ATTRS  =
+
+# The QHG_LOCATION tag can be used to specify the location of Qt's
+# qhelpgenerator. If non-empty doxygen will try to run qhelpgenerator on the
+# generated .qhp file.
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHG_LOCATION           =
+
+# If the GENERATE_ECLIPSEHELP tag is set to YES, additional index files will be
+# generated, together with the HTML files, they form an Eclipse help plugin. To
+# install this plugin and make it available under the help contents menu in
+# Eclipse, the contents of the directory containing the HTML and XML files needs
+# to be copied into the plugins directory of eclipse. The name of the directory
+# within the plugins directory should be the same as the ECLIPSE_DOC_ID value.
+# After copying Eclipse needs to be restarted before the help appears.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+GENERATE_ECLIPSEHELP   = NO
+
+# A unique identifier for the Eclipse help plugin. When installing the plugin
+# the directory name containing the HTML and XML files should also have this
+# name. Each documentation set should have its own identifier.
+# The default value is: org.doxygen.Project.
+# This tag requires that the tag GENERATE_ECLIPSEHELP is set to YES.
+
+ECLIPSE_DOC_ID         = org.doxygen.Project
+
+# If you want full control over the layout of the generated HTML pages it might
+# be necessary to disable the index and replace it with your own. The
+# DISABLE_INDEX tag can be used to turn on/off the condensed index (tabs) at top
+# of each HTML page. A value of NO enables the index and the value YES disables
+# it. Since the tabs in the index contain the same information as the navigation
+# tree, you can set this option to YES if you also set GENERATE_TREEVIEW to YES.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+DISABLE_INDEX          = NO
+
+# The GENERATE_TREEVIEW tag is used to specify whether a tree-like index
+# structure should be generated to display hierarchical information. If the tag
+# value is set to YES, a side panel will be generated containing a tree-like
+# index structure (just like the one that is generated for HTML Help). For this
+# to work a browser that supports JavaScript, DHTML, CSS and frames is required
+# (i.e. any modern browser). Windows users are probably better off using the
+# HTML help feature. Via custom style sheets (see HTML_EXTRA_STYLESHEET) one can
+# further fine-tune the look of the index. As an example, the default style
+# sheet generated by doxygen has an example that shows how to put an image at
+# the root of the tree instead of the PROJECT_NAME. Since the tree basically has
+# the same information as the tab index, you could consider setting
+# DISABLE_INDEX to YES when enabling this option.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+GENERATE_TREEVIEW      = YES
+
+# The ENUM_VALUES_PER_LINE tag can be used to set the number of enum values that
+# doxygen will group on one line in the generated HTML documentation.
+#
+# Note that a value of 0 will completely suppress the enum values from appearing
+# in the overview section.
+# Minimum value: 0, maximum value: 20, default value: 4.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+ENUM_VALUES_PER_LINE   = 4
+
+# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be used
+# to set the initial width (in pixels) of the frame in which the tree is shown.
+# Minimum value: 0, maximum value: 1500, default value: 250.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+TREEVIEW_WIDTH         = 250
+
+# If the EXT_LINKS_IN_WINDOW option is set to YES, doxygen will open links to
+# external symbols imported via tag files in a separate window.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+EXT_LINKS_IN_WINDOW    = NO
+
+# Use this tag to change the font size of LaTeX formulas included as images in
+# the HTML documentation. When you change the font size after a successful
+# doxygen run you need to manually remove any form_*.png images from the HTML
+# output directory to force them to be regenerated.
+# Minimum value: 8, maximum value: 50, default value: 10.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+FORMULA_FONTSIZE       = 10
+
+# Use the FORMULA_TRANPARENT tag to determine whether or not the images
+# generated for formulas are transparent PNGs. Transparent PNGs are not
+# supported properly for IE 6.0, but are supported on all modern browsers.
+#
+# Note that when changing this option you need to delete any form_*.png files in
+# the HTML output directory before the changes have effect.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+FORMULA_TRANSPARENT    = YES
+
+# Enable the USE_MATHJAX option to render LaTeX formulas using MathJax (see
+# http://www.mathjax.org) which uses client side Javascript for the rendering
+# instead of using pre-rendered bitmaps. Use this if you do not have LaTeX
+# installed or if you want to formulas look prettier in the HTML output. When
+# enabled you may also need to install MathJax separately and configure the path
+# to it using the MATHJAX_RELPATH option.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+USE_MATHJAX            = NO
+
+# When MathJax is enabled you can set the default output format to be used for
+# the MathJax output. See the MathJax site (see:
+# http://docs.mathjax.org/en/latest/output.html) for more details.
+# Possible values are: HTML-CSS (which is slower, but has the best
+# compatibility), NativeMML (i.e. MathML) and SVG.
+# The default value is: HTML-CSS.
+# This tag requires that the tag USE_MATHJAX is set to YES.
+
+MATHJAX_FORMAT         = HTML-CSS
+
+# When MathJax is enabled you need to specify the location relative to the HTML
+# output directory using the MATHJAX_RELPATH option. The destination directory
+# should contain the MathJax.js script. For instance, if the mathjax directory
+# is located at the same level as the HTML output directory, then
+# MATHJAX_RELPATH should be ../mathjax. The default value points to the MathJax
+# Content Delivery Network so you can quickly see the result without installing
+# MathJax. However, it is strongly recommended to install a local copy of
+# MathJax from http://www.mathjax.org before deployment.
+# The default value is: http://cdn.mathjax.org/mathjax/latest.
+# This tag requires that the tag USE_MATHJAX is set to YES.
+
+MATHJAX_RELPATH        = http://cdn.mathjax.org/mathjax/latest
+
+# The MATHJAX_EXTENSIONS tag can be used to specify one or more MathJax
+# extension names that should be enabled during MathJax rendering. For example
+# MATHJAX_EXTENSIONS = TeX/AMSmath TeX/AMSsymbols
+# This tag requires that the tag USE_MATHJAX is set to YES.
+
+MATHJAX_EXTENSIONS     =
+
+# The MATHJAX_CODEFILE tag can be used to specify a file with javascript pieces
+# of code that will be used on startup of the MathJax code. See the MathJax site
+# (see: http://docs.mathjax.org/en/latest/output.html) for more details. For an
+# example see the documentation.
+# This tag requires that the tag USE_MATHJAX is set to YES.
+
+MATHJAX_CODEFILE       =
+
+# When the SEARCHENGINE tag is enabled doxygen will generate a search box for
+# the HTML output. The underlying search engine uses javascript and DHTML and
+# should work on any modern browser. Note that when using HTML help
+# (GENERATE_HTMLHELP), Qt help (GENERATE_QHP), or docsets (GENERATE_DOCSET)
+# there is already a search function so this one should typically be disabled.
+# For large projects the javascript based search engine can be slow, then
+# enabling SERVER_BASED_SEARCH may provide a better solution. It is possible to
+# search using the keyboard; to jump to the search box use <access key> + S
+# (what the <access key> is depends on the OS and browser, but it is typically
+# <CTRL>, <ALT>/<option>, or both). Inside the search box use the <cursor down
+# key> to jump into the search results window, the results can be navigated
+# using the <cursor keys>. Press <Enter> to select an item or <escape> to cancel
+# the search. The filter options can be selected when the cursor is inside the
+# search box by pressing <Shift>+<cursor down>. Also here use the <cursor keys>
+# to select a filter and <Enter> or <escape> to activate or cancel the filter
+# option.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+SEARCHENGINE           = YES
+
+# When the SERVER_BASED_SEARCH tag is enabled the search engine will be
+# implemented using a web server instead of a web client using Javascript. There
+# are two flavors of web server based searching depending on the EXTERNAL_SEARCH
+# setting. When disabled, doxygen will generate a PHP script for searching and
+# an index file used by the script. When EXTERNAL_SEARCH is enabled the indexing
+# and searching needs to be provided by external tools. See the section
+# "External Indexing and Searching" for details.
+# The default value is: NO.
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+SERVER_BASED_SEARCH    = NO
+
+# When EXTERNAL_SEARCH tag is enabled doxygen will no longer generate the PHP
+# script for searching. Instead the search results are written to an XML file
+# which needs to be processed by an external indexer. Doxygen will invoke an
+# external search engine pointed to by the SEARCHENGINE_URL option to obtain the
+# search results.
+#
+# Doxygen ships with an example indexer (doxyindexer) and search engine
+# (doxysearch.cgi) which are based on the open source search engine library
+# Xapian (see: http://xapian.org/).
+#
+# See the section "External Indexing and Searching" for details.
+# The default value is: NO.
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+EXTERNAL_SEARCH        = NO
+
+# The SEARCHENGINE_URL should point to a search engine hosted by a web server
+# which will return the search results when EXTERNAL_SEARCH is enabled.
+#
+# Doxygen ships with an example indexer (doxyindexer) and search engine
+# (doxysearch.cgi) which are based on the open source search engine library
+# Xapian (see: http://xapian.org/). See the section "External Indexing and
+# Searching" for details.
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+SEARCHENGINE_URL       =
+
+# When SERVER_BASED_SEARCH and EXTERNAL_SEARCH are both enabled the unindexed
+# search data is written to a file for indexing by an external tool. With the
+# SEARCHDATA_FILE tag the name of this file can be specified.
+# The default file is: searchdata.xml.
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+SEARCHDATA_FILE        = searchdata.xml
+
+# When SERVER_BASED_SEARCH and EXTERNAL_SEARCH are both enabled the
+# EXTERNAL_SEARCH_ID tag can be used as an identifier for the project. This is
+# useful in combination with EXTRA_SEARCH_MAPPINGS to search through multiple
+# projects and redirect the results back to the right project.
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+EXTERNAL_SEARCH_ID     =
+
+# The EXTRA_SEARCH_MAPPINGS tag can be used to enable searching through doxygen
+# projects other than the one defined by this configuration file, but that are
+# all added to the same external search index. Each project needs to have a
+# unique id set via EXTERNAL_SEARCH_ID. The search mapping then maps the id of
+# to a relative location where the documentation can be found. The format is:
+# EXTRA_SEARCH_MAPPINGS = tagname1=loc1 tagname2=loc2 ...
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+EXTRA_SEARCH_MAPPINGS  =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the LaTeX output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_LATEX tag is set to YES, doxygen will generate LaTeX output.
+# The default value is: YES.
+
+GENERATE_LATEX         = NO
+
+# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put. If a
+# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
+# it.
+# The default directory is: latex.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_OUTPUT           = latex
+
+# The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be
+# invoked.
+#
+# Note that when enabling USE_PDFLATEX this option is only used for generating
+# bitmaps for formulas in the HTML output, but not in the Makefile that is
+# written to the output directory.
+# The default file is: latex.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_CMD_NAME         = latex
+
+# The MAKEINDEX_CMD_NAME tag can be used to specify the command name to generate
+# index for LaTeX.
+# The default file is: makeindex.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+MAKEINDEX_CMD_NAME     = makeindex
+
+# If the COMPACT_LATEX tag is set to YES, doxygen generates more compact LaTeX
+# documents. This may be useful for small projects and may help to save some
+# trees in general.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+COMPACT_LATEX          = NO
+
+# The PAPER_TYPE tag can be used to set the paper type that is used by the
+# printer.
+# Possible values are: a4 (210 x 297 mm), letter (8.5 x 11 inches), legal (8.5 x
+# 14 inches) and executive (7.25 x 10.5 inches).
+# The default value is: a4.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+PAPER_TYPE             = a4wide
+
+# The EXTRA_PACKAGES tag can be used to specify one or more LaTeX package names
+# that should be included in the LaTeX output. The package can be specified just
+# by its name or with the correct syntax as to be used with the LaTeX
+# \usepackage command. To get the times font for instance you can specify :
+# EXTRA_PACKAGES=times or EXTRA_PACKAGES={times}
+# To use the option intlimits with the amsmath package you can specify:
+# EXTRA_PACKAGES=[intlimits]{amsmath}
+# If left blank no extra packages will be included.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+EXTRA_PACKAGES         =
+
+# The LATEX_HEADER tag can be used to specify a personal LaTeX header for the
+# generated LaTeX document. The header should contain everything until the first
+# chapter. If it is left blank doxygen will generate a standard header. See
+# section "Doxygen usage" for information on how to let doxygen write the
+# default header to a separate file.
+#
+# Note: Only use a user-defined header if you know what you are doing! The
+# following commands have a special meaning inside the header: $title,
+# $datetime, $date, $doxygenversion, $projectname, $projectnumber,
+# $projectbrief, $projectlogo. Doxygen will replace $title with the empty
+# string, for the replacement values of the other commands the user is referred
+# to HTML_HEADER.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_HEADER           =
+
+# The LATEX_FOOTER tag can be used to specify a personal LaTeX footer for the
+# generated LaTeX document. The footer should contain everything after the last
+# chapter. If it is left blank doxygen will generate a standard footer. See
+# LATEX_HEADER for more information on how to generate a default footer and what
+# special commands can be used inside the footer.
+#
+# Note: Only use a user-defined footer if you know what you are doing!
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_FOOTER           =
+
+# The LATEX_EXTRA_STYLESHEET tag can be used to specify additional user-defined
+# LaTeX style sheets that are included after the standard style sheets created
+# by doxygen. Using this option one can overrule certain style aspects. Doxygen
+# will copy the style sheet files to the output directory.
+# Note: The order of the extra style sheet files is of importance (e.g. the last
+# style sheet in the list overrules the setting of the previous ones in the
+# list).
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_EXTRA_STYLESHEET =
+
+# The LATEX_EXTRA_FILES tag can be used to specify one or more extra images or
+# other source files which should be copied to the LATEX_OUTPUT output
+# directory. Note that the files will be copied as-is; there are no commands or
+# markers available.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_EXTRA_FILES      =
+
+# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated is
+# prepared for conversion to PDF (using ps2pdf or pdflatex). The PDF file will
+# contain links (just like the HTML output) instead of page references. This
+# makes the output suitable for online browsing using a PDF viewer.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+PDF_HYPERLINKS         = NO
+
+# If the USE_PDFLATEX tag is set to YES, doxygen will use pdflatex to generate
+# the PDF file directly from the LaTeX files. Set this option to YES, to get a
+# higher quality PDF documentation.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+USE_PDFLATEX           = NO
+
+# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \batchmode
+# command to the generated LaTeX files. This will instruct LaTeX to keep running
+# if errors occur, instead of asking the user for help. This option is also used
+# when generating formulas in HTML.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_BATCHMODE        = NO
+
+# If the LATEX_HIDE_INDICES tag is set to YES then doxygen will not include the
+# index chapters (such as File Index, Compound Index, etc.) in the output.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_HIDE_INDICES     = NO
+
+# If the LATEX_SOURCE_CODE tag is set to YES then doxygen will include source
+# code with syntax highlighting in the LaTeX output.
+#
+# Note that which sources are shown also depends on other settings such as
+# SOURCE_BROWSER.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_SOURCE_CODE      = NO
+
+# The LATEX_BIB_STYLE tag can be used to specify the style to use for the
+# bibliography, e.g. plainnat, or ieeetr. See
+# http://en.wikipedia.org/wiki/BibTeX and \cite for more info.
+# The default value is: plain.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_BIB_STYLE        = plain
+
+# If the LATEX_TIMESTAMP tag is set to YES then the footer of each generated
+# page will contain the date and time when the page was generated. Setting this
+# to NO can help when comparing the output of multiple runs.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_TIMESTAMP        = NO
+
+#---------------------------------------------------------------------------
+# Configuration options related to the RTF output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_RTF tag is set to YES, doxygen will generate RTF output. The
+# RTF output is optimized for Word 97 and may not look too pretty with other RTF
+# readers/editors.
+# The default value is: NO.
+
+GENERATE_RTF           = NO
+
+# The RTF_OUTPUT tag is used to specify where the RTF docs will be put. If a
+# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
+# it.
+# The default directory is: rtf.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+RTF_OUTPUT             = rtf
+
+# If the COMPACT_RTF tag is set to YES, doxygen generates more compact RTF
+# documents. This may be useful for small projects and may help to save some
+# trees in general.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+COMPACT_RTF            = NO
+
+# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated will
+# contain hyperlink fields. The RTF file will contain links (just like the HTML
+# output) instead of page references. This makes the output suitable for online
+# browsing using Word or some other Word compatible readers that support those
+# fields.
+#
+# Note: WordPad (write) and others do not support links.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+RTF_HYPERLINKS         = NO
+
+# Load stylesheet definitions from file. Syntax is similar to doxygen's config
+# file, i.e. a series of assignments. You only have to provide replacements,
+# missing definitions are set to their default value.
+#
+# See also section "Doxygen usage" for information on how to generate the
+# default style sheet that doxygen normally uses.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+RTF_STYLESHEET_FILE    =
+
+# Set optional variables used in the generation of an RTF document. Syntax is
+# similar to doxygen's config file. A template extensions file can be generated
+# using doxygen -e rtf extensionFile.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+RTF_EXTENSIONS_FILE    =
+
+# If the RTF_SOURCE_CODE tag is set to YES then doxygen will include source code
+# with syntax highlighting in the RTF output.
+#
+# Note that which sources are shown also depends on other settings such as
+# SOURCE_BROWSER.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+RTF_SOURCE_CODE        = NO
+
+#---------------------------------------------------------------------------
+# Configuration options related to the man page output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_MAN tag is set to YES, doxygen will generate man pages for
+# classes and files.
+# The default value is: NO.
+
+GENERATE_MAN           = NO
+
+# The MAN_OUTPUT tag is used to specify where the man pages will be put. If a
+# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
+# it. A directory man3 will be created inside the directory specified by
+# MAN_OUTPUT.
+# The default directory is: man.
+# This tag requires that the tag GENERATE_MAN is set to YES.
+
+MAN_OUTPUT             = man
+
+# The MAN_EXTENSION tag determines the extension that is added to the generated
+# man pages. In case the manual section does not start with a number, the number
+# 3 is prepended. The dot (.) at the beginning of the MAN_EXTENSION tag is
+# optional.
+# The default value is: .3.
+# This tag requires that the tag GENERATE_MAN is set to YES.
+
+MAN_EXTENSION          = .3
+
+# The MAN_SUBDIR tag determines the name of the directory created within
+# MAN_OUTPUT in which the man pages are placed. If defaults to man followed by
+# MAN_EXTENSION with the initial . removed.
+# This tag requires that the tag GENERATE_MAN is set to YES.
+
+MAN_SUBDIR             =
+
+# If the MAN_LINKS tag is set to YES and doxygen generates man output, then it
+# will generate one additional man file for each entity documented in the real
+# man page(s). These additional files only source the real man page, but without
+# them the man command would be unable to find the correct page.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_MAN is set to YES.
+
+MAN_LINKS              = NO
+
+#---------------------------------------------------------------------------
+# Configuration options related to the XML output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_XML tag is set to YES, doxygen will generate an XML file that
+# captures the structure of the code including all documentation.
+# The default value is: NO.
+
+GENERATE_XML           = NO
+
+# The XML_OUTPUT tag is used to specify where the XML pages will be put. If a
+# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
+# it.
+# The default directory is: xml.
+# This tag requires that the tag GENERATE_XML is set to YES.
+
+XML_OUTPUT             = xml
+
+# If the XML_PROGRAMLISTING tag is set to YES, doxygen will dump the program
+# listings (including syntax highlighting and cross-referencing information) to
+# the XML output. Note that enabling this will significantly increase the size
+# of the XML output.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_XML is set to YES.
+
+XML_PROGRAMLISTING     = YES
+
+#---------------------------------------------------------------------------
+# Configuration options related to the DOCBOOK output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_DOCBOOK tag is set to YES, doxygen will generate Docbook files
+# that can be used to generate PDF.
+# The default value is: NO.
+
+GENERATE_DOCBOOK       = NO
+
+# The DOCBOOK_OUTPUT tag is used to specify where the Docbook pages will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be put in
+# front of it.
+# The default directory is: docbook.
+# This tag requires that the tag GENERATE_DOCBOOK is set to YES.
+
+DOCBOOK_OUTPUT         = docbook
+
+# If the DOCBOOK_PROGRAMLISTING tag is set to YES, doxygen will include the
+# program listings (including syntax highlighting and cross-referencing
+# information) to the DOCBOOK output. Note that enabling this will significantly
+# increase the size of the DOCBOOK output.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_DOCBOOK is set to YES.
+
+DOCBOOK_PROGRAMLISTING = NO
+
+#---------------------------------------------------------------------------
+# Configuration options for the AutoGen Definitions output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_AUTOGEN_DEF tag is set to YES, doxygen will generate an
+# AutoGen Definitions (see http://autogen.sf.net) file that captures the
+# structure of the code including all documentation. Note that this feature is
+# still experimental and incomplete at the moment.
+# The default value is: NO.
+
+GENERATE_AUTOGEN_DEF   = NO
+
+#---------------------------------------------------------------------------
+# Configuration options related to the Perl module output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_PERLMOD tag is set to YES, doxygen will generate a Perl module
+# file that captures the structure of the code including all documentation.
+#
+# Note that this feature is still experimental and incomplete at the moment.
+# The default value is: NO.
+
+GENERATE_PERLMOD       = NO
+
+# If the PERLMOD_LATEX tag is set to YES, doxygen will generate the necessary
+# Makefile rules, Perl scripts and LaTeX code to be able to generate PDF and DVI
+# output from the Perl module output.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_PERLMOD is set to YES.
+
+PERLMOD_LATEX          = NO
+
+# If the PERLMOD_PRETTY tag is set to YES, the Perl module output will be nicely
+# formatted so it can be parsed by a human reader. This is useful if you want to
+# understand what is going on. On the other hand, if this tag is set to NO, the
+# size of the Perl module output will be much smaller and Perl will parse it
+# just the same.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_PERLMOD is set to YES.
+
+PERLMOD_PRETTY         = YES
+
+# The names of the make variables in the generated doxyrules.make file are
+# prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX. This is useful
+# so different doxyrules.make files included by the same Makefile don't
+# overwrite each other's variables.
+# This tag requires that the tag GENERATE_PERLMOD is set to YES.
+
+PERLMOD_MAKEVAR_PREFIX =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the preprocessor
+#---------------------------------------------------------------------------
+
+# If the ENABLE_PREPROCESSING tag is set to YES, doxygen will evaluate all
+# C-preprocessor directives found in the sources and include files.
+# The default value is: YES.
+
+ENABLE_PREPROCESSING   = YES
+
+# If the MACRO_EXPANSION tag is set to YES, doxygen will expand all macro names
+# in the source code. If set to NO, only conditional compilation will be
+# performed. Macro expansion can be done in a controlled way by setting
+# EXPAND_ONLY_PREDEF to YES.
+# The default value is: NO.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+MACRO_EXPANSION        = YES
+
+# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES then
+# the macro expansion is limited to the macros specified with the PREDEFINED and
+# EXPAND_AS_DEFINED tags.
+# The default value is: NO.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+EXPAND_ONLY_PREDEF     = NO
+
+# If the SEARCH_INCLUDES tag is set to YES, the include files in the
+# INCLUDE_PATH will be searched if a #include is found.
+# The default value is: YES.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+SEARCH_INCLUDES        = YES
+
+# The INCLUDE_PATH tag can be used to specify one or more directories that
+# contain include files that are not input files but should be processed by the
+# preprocessor.
+# This tag requires that the tag SEARCH_INCLUDES is set to YES.
+
+INCLUDE_PATH           = ../../src/include
+
+# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard
+# patterns (like *.h and *.hpp) to filter out the header-files in the
+# directories. If left blank, the patterns specified with FILE_PATTERNS will be
+# used.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+INCLUDE_FILE_PATTERNS  = *.h
+
+# The PREDEFINED tag can be used to specify one or more macro names that are
+# defined before the preprocessor is started (similar to the -D option of e.g.
+# gcc). The argument of the tag is a list of macros of the form: name or
+# name=definition (no spaces). If the definition and the "=" are omitted, "=1"
+# is assumed. To prevent a macro definition from being undefined via #undef or
+# recursively expanded use the := operator instead of the = operator.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+PREDEFINED             = __DOXYGEN__=1 \
+                         NO_SYS=0 \
+                         SYS_LIGHTWEIGHT_PROT=1 \
+                         LWIP_TCPIP_CORE_LOCKING=1 \
+                         LWIP_IPV4=1 \
+                         LWIP_IPV6=1 \
+                         LWIP_ICMP=1 \
+                         LWIP_RAW=1 \
+                         LWIP_DHCP=1 \
+                         LWIP_IPV6_DHCP6=1 \
+                         LWIP_UDPLITE=1 \
+                         LWIP_UDP=1 \
+                         LWIP_IGMP=1 \
+                         LWIP_TCP=1 \
+                         LWIP_ALTCP=1 \
+                         LWIP_ALTCP_TLS=1 \
+                         LWIP_IPV6_SCOPES=1 \
+                         TCP_LISTEN_BACKLOG=1 \
+                         LWIP_SNMP=1 \
+                         SNMP_USE_NETCONN=1 \
+                         SNMP_USE_RAW=1 \
+                         MIB2_STATS=1 \
+                         LWIP_MDNS_RESPONDER=1 \
+                         HTTPD_ENABLE_HTTPS=1 \
+                         LWIP_HTTPD_CGI=1 \
+                         LWIP_HTTPD_SSI=1 \
+                         LWIP_HTTPD_SSI_RAW=1 \
+                         LWIP_HTTPD_SUPPORT_POST=1 \
+                         LWIP_HTTPD_POST_MANUAL_WND=1 \
+                         MEMP_OVERFLOW_CHECK=0 \
+                         MEMP_SANITY_CHECK=1 \
+                         LWIP_ARP=1 \
+                         LWIP_HAVE_LOOPIF=1 \
+                         LWIP_NETIF_HOSTNAME=1 \
+                         LWIP_NETIF_API=1 \
+                         LWIP_NETIF_CALLBACK=1 \
+                         LWIP_NETIF_STATUS_CALLBACK=1 \
+                         LWIP_NETIF_REMOVE_CALLBACK=1 \
+                         LWIP_NETIF_LINK_CALLBACK=1 \
+                         LWIP_NETIF_EXT_STATUS_CALLBACK=1 \
+                         LWIP_NUM_NETIF_CLIENT_DATA=1 \
+                         ENABLE_LOOPBACK=1 \
+                         LWIP_AUTOIP=1 \
+                         ARP_QUEUEING=1 \
+                         LWIP_STATS=1 \
+                         MEM_USE_POOLS=0 \
+                         LWIP_DNS=1 \
+                         LWIP_SOCKET=1 \
+                         LWIP_NETCONN=1 \
+                         IP_SOF_BROADCAST=1 \
+                         IP_SOF_BROADCAST_RECV=1 \
+                         LWIP_NETIF_API=1 \
+                         LWIP_SO_SNDTIMEO=1 \
+                         LWIP_SO_RCVBUF=1 \
+                         LWIP_SO_LINGER=1 \
+                         SO_REUSE=1 \
+                         SO_REUSE_RXTOALL=1 \
+                         LWIP_HAVE_SLIPIF=1 \
+                         SLIP_RX_FROM_ISR=1 \
+                         LWIP_TCP_PCB_NUM_EXT_ARGS=1
+
+# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
+# tag can be used to specify a list of macro names that should be expanded. The
+# macro definition that is found in the sources will be used. Use the PREDEFINED
+# tag if you want to use a different macro definition that overrules the
+# definition found in the source code.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+EXPAND_AS_DEFINED      =
+
+# If the SKIP_FUNCTION_MACROS tag is set to YES then doxygen's preprocessor will
+# remove all references to function-like macros that are alone on a line, have
+# an all uppercase name, and do not end with a semicolon. Such function macros
+# are typically used for boiler-plate code, and will confuse the parser if not
+# removed.
+# The default value is: YES.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+SKIP_FUNCTION_MACROS   = NO
+
+#---------------------------------------------------------------------------
+# Configuration options related to external references
+#---------------------------------------------------------------------------
+
+# The TAGFILES tag can be used to specify one or more tag files. For each tag
+# file the location of the external documentation should be added. The format of
+# a tag file without this location is as follows:
+# TAGFILES = file1 file2 ...
+# Adding location for the tag files is done as follows:
+# TAGFILES = file1=loc1 "file2 = loc2" ...
+# where loc1 and loc2 can be relative or absolute paths or URLs. See the
+# section "Linking to external documentation" for more information about the use
+# of tag files.
+# Note: Each tag file must have a unique name (where the name does NOT include
+# the path). If a tag file is not located in the directory in which doxygen is
+# run, you must also specify the path to the tagfile here.
+
+TAGFILES               =
+
+# When a file name is specified after GENERATE_TAGFILE, doxygen will create a
+# tag file that is based on the input files it reads. See section "Linking to
+# external documentation" for more information about the usage of tag files.
+
+GENERATE_TAGFILE       =
+
+# If the ALLEXTERNALS tag is set to YES, all external class will be listed in
+# the class index. If set to NO, only the inherited external classes will be
+# listed.
+# The default value is: NO.
+
+ALLEXTERNALS           = NO
+
+# If the EXTERNAL_GROUPS tag is set to YES, all external groups will be listed
+# in the modules index. If set to NO, only the current project's groups will be
+# listed.
+# The default value is: YES.
+
+EXTERNAL_GROUPS        = YES
+
+# If the EXTERNAL_PAGES tag is set to YES, all external pages will be listed in
+# the related pages index. If set to NO, only the current project's pages will
+# be listed.
+# The default value is: YES.
+
+EXTERNAL_PAGES         = YES
+
+# The PERL_PATH should be the absolute path and name of the perl script
+# interpreter (i.e. the result of 'which perl').
+# The default file (with absolute path) is: /usr/bin/perl.
+
+PERL_PATH              = /usr/bin/perl
+
+#---------------------------------------------------------------------------
+# Configuration options related to the dot tool
+#---------------------------------------------------------------------------
+
+# If the CLASS_DIAGRAMS tag is set to YES, doxygen will generate a class diagram
+# (in HTML and LaTeX) for classes with base or super classes. Setting the tag to
+# NO turns the diagrams off. Note that this option also works with HAVE_DOT
+# disabled, but it is recommended to install and use dot, since it yields more
+# powerful graphs.
+# The default value is: YES.
+
+CLASS_DIAGRAMS         = YES
+
+# You can define message sequence charts within doxygen comments using the \msc
+# command. Doxygen will then run the mscgen tool (see:
+# http://www.mcternan.me.uk/mscgen/)) to produce the chart and insert it in the
+# documentation. The MSCGEN_PATH tag allows you to specify the directory where
+# the mscgen tool resides. If left empty the tool is assumed to be found in the
+# default search path.
+
+MSCGEN_PATH            =
+
+# You can include diagrams made with dia in doxygen documentation. Doxygen will
+# then run dia to produce the diagram and insert it in the documentation. The
+# DIA_PATH tag allows you to specify the directory where the dia binary resides.
+# If left empty dia is assumed to be found in the default search path.
+
+DIA_PATH               =
+
+# If set to YES the inheritance and collaboration graphs will hide inheritance
+# and usage relations if the target is undocumented or is not a class.
+# The default value is: YES.
+
+HIDE_UNDOC_RELATIONS   = YES
+
+# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is
+# available from the path. This tool is part of Graphviz (see:
+# http://www.graphviz.org/), a graph visualization toolkit from AT&T and Lucent
+# Bell Labs. The other options in this section have no effect if this option is
+# set to NO
+# The default value is: NO.
+
+HAVE_DOT               = NO
+
+# The DOT_NUM_THREADS specifies the number of dot invocations doxygen is allowed
+# to run in parallel. When set to 0 doxygen will base this on the number of
+# processors available in the system. You can set it explicitly to a value
+# larger than 0 to get control over the balance between CPU load and processing
+# speed.
+# Minimum value: 0, maximum value: 32, default value: 0.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_NUM_THREADS        = 0
+
+# When you want a differently looking font in the dot files that doxygen
+# generates you can specify the font name using DOT_FONTNAME. You need to make
+# sure dot is able to find the font, which can be done by putting it in a
+# standard location or by setting the DOTFONTPATH environment variable or by
+# setting DOT_FONTPATH to the directory containing the font.
+# The default value is: Helvetica.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_FONTNAME           = Helvetica
+
+# The DOT_FONTSIZE tag can be used to set the size (in points) of the font of
+# dot graphs.
+# Minimum value: 4, maximum value: 24, default value: 10.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_FONTSIZE           = 10
+
+# By default doxygen will tell dot to use the default font as specified with
+# DOT_FONTNAME. If you specify a different font using DOT_FONTNAME you can set
+# the path where dot can find it using this tag.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_FONTPATH           =
+
+# If the CLASS_GRAPH tag is set to YES then doxygen will generate a graph for
+# each documented class showing the direct and indirect inheritance relations.
+# Setting this tag to YES will force the CLASS_DIAGRAMS tag to NO.
+# The default value is: YES.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+CLASS_GRAPH            = YES
+
+# If the COLLABORATION_GRAPH tag is set to YES then doxygen will generate a
+# graph for each documented class showing the direct and indirect implementation
+# dependencies (inheritance, containment, and class references variables) of the
+# class with other documented classes.
+# The default value is: YES.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+COLLABORATION_GRAPH    = YES
+
+# If the GROUP_GRAPHS tag is set to YES then doxygen will generate a graph for
+# groups, showing the direct groups dependencies.
+# The default value is: YES.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+GROUP_GRAPHS           = YES
+
+# If the UML_LOOK tag is set to YES, doxygen will generate inheritance and
+# collaboration diagrams in a style similar to the OMG's Unified Modeling
+# Language.
+# The default value is: NO.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+UML_LOOK               = NO
+
+# If the UML_LOOK tag is enabled, the fields and methods are shown inside the
+# class node. If there are many fields or methods and many nodes the graph may
+# become too big to be useful. The UML_LIMIT_NUM_FIELDS threshold limits the
+# number of items for each type to make the size more manageable. Set this to 0
+# for no limit. Note that the threshold may be exceeded by 50% before the limit
+# is enforced. So when you set the threshold to 10, up to 15 fields may appear,
+# but if the number exceeds 15, the total amount of fields shown is limited to
+# 10.
+# Minimum value: 0, maximum value: 100, default value: 10.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+UML_LIMIT_NUM_FIELDS   = 10
+
+# If the TEMPLATE_RELATIONS tag is set to YES then the inheritance and
+# collaboration graphs will show the relations between templates and their
+# instances.
+# The default value is: NO.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+TEMPLATE_RELATIONS     = NO
+
+# If the INCLUDE_GRAPH, ENABLE_PREPROCESSING and SEARCH_INCLUDES tags are set to
+# YES then doxygen will generate a graph for each documented file showing the
+# direct and indirect include dependencies of the file with other documented
+# files.
+# The default value is: YES.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+INCLUDE_GRAPH          = YES
+
+# If the INCLUDED_BY_GRAPH, ENABLE_PREPROCESSING and SEARCH_INCLUDES tags are
+# set to YES then doxygen will generate a graph for each documented file showing
+# the direct and indirect include dependencies of the file with other documented
+# files.
+# The default value is: YES.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+INCLUDED_BY_GRAPH      = YES
+
+# If the CALL_GRAPH tag is set to YES then doxygen will generate a call
+# dependency graph for every global function or class method.
+#
+# Note that enabling this option will significantly increase the time of a run.
+# So in most cases it will be better to enable call graphs for selected
+# functions only using the \callgraph command. Disabling a call graph can be
+# accomplished by means of the command \hidecallgraph.
+# The default value is: NO.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+CALL_GRAPH             = NO
+
+# If the CALLER_GRAPH tag is set to YES then doxygen will generate a caller
+# dependency graph for every global function or class method.
+#
+# Note that enabling this option will significantly increase the time of a run.
+# So in most cases it will be better to enable caller graphs for selected
+# functions only using the \callergraph command. Disabling a caller graph can be
+# accomplished by means of the command \hidecallergraph.
+# The default value is: NO.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+CALLER_GRAPH           = NO
+
+# If the GRAPHICAL_HIERARCHY tag is set to YES then doxygen will graphical
+# hierarchy of all classes instead of a textual one.
+# The default value is: YES.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+GRAPHICAL_HIERARCHY    = YES
+
+# If the DIRECTORY_GRAPH tag is set to YES then doxygen will show the
+# dependencies a directory has on other directories in a graphical way. The
+# dependency relations are determined by the #include relations between the
+# files in the directories.
+# The default value is: YES.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DIRECTORY_GRAPH        = YES
+
+# The DOT_IMAGE_FORMAT tag can be used to set the image format of the images
+# generated by dot. For an explanation of the image formats see the section
+# output formats in the documentation of the dot tool (Graphviz (see:
+# http://www.graphviz.org/)).
+# Note: If you choose svg you need to set HTML_FILE_EXTENSION to xhtml in order
+# to make the SVG files visible in IE 9+ (other browsers do not have this
+# requirement).
+# Possible values are: png, jpg, gif, svg, png:gd, png:gd:gd, png:cairo,
+# png:cairo:gd, png:cairo:cairo, png:cairo:gdiplus, png:gdiplus and
+# png:gdiplus:gdiplus.
+# The default value is: png.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_IMAGE_FORMAT       = png
+
+# If DOT_IMAGE_FORMAT is set to svg, then this option can be set to YES to
+# enable generation of interactive SVG images that allow zooming and panning.
+#
+# Note that this requires a modern browser other than Internet Explorer. Tested
+# and working are Firefox, Chrome, Safari, and Opera.
+# Note: For IE 9+ you need to set HTML_FILE_EXTENSION to xhtml in order to make
+# the SVG files visible. Older versions of IE do not have SVG support.
+# The default value is: NO.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+INTERACTIVE_SVG        = NO
+
+# The DOT_PATH tag can be used to specify the path where the dot tool can be
+# found. If left blank, it is assumed the dot tool can be found in the path.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_PATH               =
+
+# The DOTFILE_DIRS tag can be used to specify one or more directories that
+# contain dot files that are included in the documentation (see the \dotfile
+# command).
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOTFILE_DIRS           =
+
+# The MSCFILE_DIRS tag can be used to specify one or more directories that
+# contain msc files that are included in the documentation (see the \mscfile
+# command).
+
+MSCFILE_DIRS           =
+
+# The DIAFILE_DIRS tag can be used to specify one or more directories that
+# contain dia files that are included in the documentation (see the \diafile
+# command).
+
+DIAFILE_DIRS           =
+
+# When using plantuml, the PLANTUML_JAR_PATH tag should be used to specify the
+# path where java can find the plantuml.jar file. If left blank, it is assumed
+# PlantUML is not used or called during a preprocessing step. Doxygen will
+# generate a warning when it encounters a \startuml command in this case and
+# will not generate output for the diagram.
+
+PLANTUML_JAR_PATH      =
+
+# When using plantuml, the PLANTUML_CFG_FILE tag can be used to specify a
+# configuration file for plantuml.
+
+PLANTUML_CFG_FILE      =
+
+# When using plantuml, the specified paths are searched for files specified by
+# the !include statement in a plantuml block.
+
+PLANTUML_INCLUDE_PATH  =
+
+# The DOT_GRAPH_MAX_NODES tag can be used to set the maximum number of nodes
+# that will be shown in the graph. If the number of nodes in a graph becomes
+# larger than this value, doxygen will truncate the graph, which is visualized
+# by representing a node as a red box. Note that doxygen if the number of direct
+# children of the root node in a graph is already larger than
+# DOT_GRAPH_MAX_NODES then the graph will not be shown at all. Also note that
+# the size of a graph can be further restricted by MAX_DOT_GRAPH_DEPTH.
+# Minimum value: 0, maximum value: 10000, default value: 50.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_GRAPH_MAX_NODES    = 50
+
+# The MAX_DOT_GRAPH_DEPTH tag can be used to set the maximum depth of the graphs
+# generated by dot. A depth value of 3 means that only nodes reachable from the
+# root by following a path via at most 3 edges will be shown. Nodes that lay
+# further from the root node will be omitted. Note that setting this option to 1
+# or 2 may greatly reduce the computation time needed for large code bases. Also
+# note that the size of a graph can be further restricted by
+# DOT_GRAPH_MAX_NODES. Using a depth of 0 means no depth restriction.
+# Minimum value: 0, maximum value: 1000, default value: 0.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+MAX_DOT_GRAPH_DEPTH    = 1000
+
+# Set the DOT_TRANSPARENT tag to YES to generate images with a transparent
+# background. This is disabled by default, because dot on Windows does not seem
+# to support this out of the box.
+#
+# Warning: Depending on the platform used, enabling this option may lead to
+# badly anti-aliased labels on the edges of a graph (i.e. they become hard to
+# read).
+# The default value is: NO.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_TRANSPARENT        = NO
+
+# Set the DOT_MULTI_TARGETS tag to YES to allow dot to generate multiple output
+# files in one run (i.e. multiple -o and -T options on the command line). This
+# makes dot run faster, but since only newer versions of dot (>1.8.10) support
+# this, this feature is disabled by default.
+# The default value is: NO.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_MULTI_TARGETS      = NO
+
+# If the GENERATE_LEGEND tag is set to YES doxygen will generate a legend page
+# explaining the meaning of the various boxes and arrows in the dot generated
+# graphs.
+# The default value is: YES.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+GENERATE_LEGEND        = YES
+
+# If the DOT_CLEANUP tag is set to YES, doxygen will remove the intermediate dot
+# files that are used to generate the various graphs.
+# The default value is: YES.
+# This tag requires that the tag HAVE_DOT is set to YES.
+
+DOT_CLEANUP            = YES
diff --git a/components/net/lwip/lwip-2.1.2/doc/doxygen/lwip.Doxyfile.cmake.in b/components/net/lwip/lwip-2.1.2/doc/doxygen/lwip.Doxyfile.cmake.in
new file mode 100644
index 0000000000..063c288745
--- /dev/null
+++ b/components/net/lwip/lwip-2.1.2/doc/doxygen/lwip.Doxyfile.cmake.in
@@ -0,0 +1,2531 @@
+# Doxyfile 1.8.13
+
+# This file describes the settings to be used by the documentation system
+# doxygen (www.doxygen.org) for a project.
+#
+# All text after a double hash (##) is considered a comment and is placed in
+# front of the TAG it is preceding.
+#
+# All text after a single hash (#) is considered a comment and will be ignored.
+# The format is:
+# TAG = value [value, ...]
+# For lists, items can also be appended using:
+# TAG += value [value, ...]
+# Values that contain spaces should be placed between quotes (\" \").
+
+#---------------------------------------------------------------------------
+# Project related configuration options
+#---------------------------------------------------------------------------
+
+# This tag specifies the encoding used for all characters in the config file
+# that follow. The default is UTF-8 which is also the encoding used for all text
+# before the first occurrence of this tag. Doxygen uses libiconv (or the iconv
+# built into libc) for the transcoding. See http://www.gnu.org/software/libiconv
+# for the list of possible encodings.
+# The default value is: UTF-8.
+
+DOXYFILE_ENCODING      = UTF-8
+
+# The PROJECT_NAME tag is a single word (or a sequence of words surrounded by
+# double-quotes, unless you are using Doxywizard) that should identify the
+# project for which the documentation is generated. This name is used in the
+# title of most generated pages and in a few other places.
+# The default value is: My Project.
+
+PROJECT_NAME           = "lwIP"
+
+# The PROJECT_NUMBER tag can be used to enter a project or revision number. This
+# could be handy for archiving the generated documentation or if some version
+# control system is used.
+
+PROJECT_NUMBER         = "${LWIP_VERSION_STRING}"
+
+# Using the PROJECT_BRIEF tag one can provide an optional one line description
+# for a project that appears at the top of each page and should give viewer a
+# quick idea about the purpose of the project. Keep the description short.
+
+PROJECT_BRIEF          = "Lightweight IP stack"
+
+# With the PROJECT_LOGO tag one can specify a logo or an icon that is included
+# in the documentation. The maximum height of the logo should not exceed 55
+# pixels and the maximum width should not exceed 200 pixels. Doxygen will copy
+# the logo to the output directory.
+
+PROJECT_LOGO           =
+
+# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) path
+# into which the generated documentation will be written. If a relative path is
+# entered, it will be relative to the location where doxygen was started. If
+# left blank the current directory will be used.
+
+OUTPUT_DIRECTORY       = "${DOXYGEN_OUTPUT_DIR}"
+
+# If the CREATE_SUBDIRS tag is set to YES then doxygen will create 4096 sub-
+# directories (in 2 levels) under the output directory of each output format and
+# will distribute the generated files over these directories. Enabling this
+# option can be useful when feeding doxygen a huge amount of source files, where
+# putting all generated files in the same directory would otherwise causes
+# performance problems for the file system.
+# The default value is: NO.
+
+CREATE_SUBDIRS         = NO
+
+# If the ALLOW_UNICODE_NAMES tag is set to YES, doxygen will allow non-ASCII
+# characters to appear in the names of generated files. If set to NO, non-ASCII
+# characters will be escaped, for example _xE3_x81_x84 will be used for Unicode
+# U+3044.
+# The default value is: NO.
+
+ALLOW_UNICODE_NAMES    = NO
+
+# The OUTPUT_LANGUAGE tag is used to specify the language in which all
+# documentation generated by doxygen is written. Doxygen will use this
+# information to generate all constant output in the proper language.
+# Possible values are: Afrikaans, Arabic, Armenian, Brazilian, Catalan, Chinese,
+# Chinese-Traditional, Croatian, Czech, Danish, Dutch, English (United States),
+# Esperanto, Farsi (Persian), Finnish, French, German, Greek, Hungarian,
+# Indonesian, Italian, Japanese, Japanese-en (Japanese with English messages),
+# Korean, Korean-en (Korean with English messages), Latvian, Lithuanian,
+# Macedonian, Norwegian, Persian (Farsi), Polish, Portuguese, Romanian, Russian,
+# Serbian, Serbian-Cyrillic, Slovak, Slovene, Spanish, Swedish, Turkish,
+# Ukrainian and Vietnamese.
+# The default value is: English.
+
+OUTPUT_LANGUAGE        = English
+
+# If the BRIEF_MEMBER_DESC tag is set to YES, doxygen will include brief member
+# descriptions after the members that are listed in the file and class
+# documentation (similar to Javadoc). Set to NO to disable this.
+# The default value is: YES.
+
+BRIEF_MEMBER_DESC      = YES
+
+# If the REPEAT_BRIEF tag is set to YES, doxygen will prepend the brief
+# description of a member or function before the detailed description
+#
+# Note: If both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the
+# brief descriptions will be completely suppressed.
+# The default value is: YES.
+
+REPEAT_BRIEF           = YES
+
+# This tag implements a quasi-intelligent brief description abbreviator that is
+# used to form the text in various listings. Each string in this list, if found
+# as the leading text of the brief description, will be stripped from the text
+# and the result, after processing the whole list, is used as the annotated
+# text. Otherwise, the brief description is used as-is. If left blank, the
+# following values are used ($name is automatically replaced with the name of
+# the entity):The $name class, The $name widget, The $name file, is, provides,
+# specifies, contains, represents, a, an and the.
+
+ABBREVIATE_BRIEF       = "The $name class       " \
+                         "The $name widget       " \
+                         "The $name file       " \
+                         is \
+                         provides \
+                         specifies \
+                         contains \
+                         represents \
+                         a \
+                         an \
+                         the
+
+# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then
+# doxygen will generate a detailed section even if there is only a brief
+# description.
+# The default value is: NO.
+
+ALWAYS_DETAILED_SEC    = NO
+
+# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all
+# inherited members of a class in the documentation of that class as if those
+# members were ordinary class members. Constructors, destructors and assignment
+# operators of the base classes will not be shown.
+# The default value is: NO.
+
+INLINE_INHERITED_MEMB  = NO
+
+# If the FULL_PATH_NAMES tag is set to YES, doxygen will prepend the full path
+# before files name in the file list and in the header files. If set to NO the
+# shortest path that makes the file name unique will be used
+# The default value is: YES.
+
+FULL_PATH_NAMES        = YES
+
+# The STRIP_FROM_PATH tag can be used to strip a user-defined part of the path.
+# Stripping is only done if one of the specified strings matches the left-hand
+# part of the path. The tag can be used to show relative paths in the file list.
+# If left blank the directory from which doxygen is run is used as the path to
+# strip.
+#
+# Note that you can specify absolute paths here, but also relative paths, which
+# will be relative from the directory where doxygen is started.
+# This tag requires that the tag FULL_PATH_NAMES is set to YES.
+
+STRIP_FROM_PATH        = ../../
+
+# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of the
+# path mentioned in the documentation of a class, which tells the reader which
+# header file to include in order to use a class. If left blank only the name of
+# the header file containing the class definition is used. Otherwise one should
+# specify the list of include paths that are normally passed to the compiler
+# using the -I flag.
+
+STRIP_FROM_INC_PATH    =
+
+# If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter (but
+# less readable) file names. This can be useful is your file systems doesn't
+# support long names like on DOS, Mac, or CD-ROM.
+# The default value is: NO.
+
+SHORT_NAMES            = NO
+
+# If the JAVADOC_AUTOBRIEF tag is set to YES then doxygen will interpret the
+# first line (until the first dot) of a Javadoc-style comment as the brief
+# description. If set to NO, the Javadoc-style will behave just like regular Qt-
+# style comments (thus requiring an explicit @brief command for a brief
+# description.)
+# The default value is: NO.
+
+JAVADOC_AUTOBRIEF      = NO
+
+# If the QT_AUTOBRIEF tag is set to YES then doxygen will interpret the first
+# line (until the first dot) of a Qt-style comment as the brief description. If
+# set to NO, the Qt-style will behave just like regular Qt-style comments (thus
+# requiring an explicit \brief command for a brief description.)
+# The default value is: NO.
+
+QT_AUTOBRIEF           = NO
+
+# The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make doxygen treat a
+# multi-line C++ special comment block (i.e. a block of //! or /// comments) as
+# a brief description. This used to be the default behavior. The new default is
+# to treat a multi-line C++ comment block as a detailed description. Set this
+# tag to YES if you prefer the old behavior instead.
+#
+# Note that setting this tag to YES also means that rational rose comments are
+# not recognized any more.
+# The default value is: NO.
+
+MULTILINE_CPP_IS_BRIEF = NO
+
+# If the INHERIT_DOCS tag is set to YES then an undocumented member inherits the
+# documentation from any documented member that it re-implements.
+# The default value is: YES.
+
+INHERIT_DOCS           = YES
+
+# If the SEPARATE_MEMBER_PAGES tag is set to YES then doxygen will produce a new
+# page for each member. If set to NO, the documentation of a member will be part
+# of the file/class/namespace that contains it.
+# The default value is: NO.
+
+SEPARATE_MEMBER_PAGES  = NO
+
+# The TAB_SIZE tag can be used to set the number of spaces in a tab. Doxygen
+# uses this value to replace tabs by spaces in code fragments.
+# Minimum value: 1, maximum value: 16, default value: 4.
+
+TAB_SIZE               = 8
+
+# This tag can be used to specify a number of aliases that act as commands in
+# the documentation. An alias has the form:
+# name=value
+# For example adding
+# "sideeffect=@par Side Effects:\n"
+# will allow you to put the command \sideeffect (or @sideeffect) in the
+# documentation, which will result in a user-defined paragraph with heading
+# "Side Effects:". You can put \n's in the value part of an alias to insert
+# newlines.
+
+ALIASES                =
+
+# This tag can be used to specify a number of word-keyword mappings (TCL only).
+# A mapping has the form "name=value". For example adding "class=itcl::class"
+# will allow you to use the command class in the itcl::class meaning.
+
+TCL_SUBST              =
+
+# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C sources
+# only. Doxygen will then generate output that is more tailored for C. For
+# instance, some of the names that are used will be different. The list of all
+# members will be omitted, etc.
+# The default value is: NO.
+
+OPTIMIZE_OUTPUT_FOR_C  = YES
+
+# Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java or
+# Python sources only. Doxygen will then generate output that is more tailored
+# for that language. For instance, namespaces will be presented as packages,
+# qualified scopes will look different, etc.
+# The default value is: NO.
+
+OPTIMIZE_OUTPUT_JAVA   = NO
+
+# Set the OPTIMIZE_FOR_FORTRAN tag to YES if your project consists of Fortran
+# sources. Doxygen will then generate output that is tailored for Fortran.
+# The default value is: NO.
+
+OPTIMIZE_FOR_FORTRAN   = NO
+
+# Set the OPTIMIZE_OUTPUT_VHDL tag to YES if your project consists of VHDL
+# sources. Doxygen will then generate output that is tailored for VHDL.
+# The default value is: NO.
+
+OPTIMIZE_OUTPUT_VHDL   = NO
+
+# Doxygen selects the parser to use depending on the extension of the files it
+# parses. With this tag you can assign which parser to use for a given
+# extension. Doxygen has a built-in mapping, but you can override or extend it
+# using this tag. The format is ext=language, where ext is a file extension, and
+# language is one of the parsers supported by doxygen: IDL, Java, Javascript,
+# C#, C, C++, D, PHP, Objective-C, Python, Fortran (fixed format Fortran:
+# FortranFixed, free formatted Fortran: FortranFree, unknown formatted Fortran:
+# Fortran. In the later case the parser tries to guess whether the code is fixed
+# or free formatted code, this is the default for Fortran type files), VHDL. For
+# instance to make doxygen treat .inc files as Fortran files (default is PHP),
+# and .f files as C (default is Fortran), use: inc=Fortran f=C.
+#
+# Note: For files without extension you can use no_extension as a placeholder.
+#
+# Note that for custom extensions you also need to set FILE_PATTERNS otherwise
+# the files are not read by doxygen.
+
+EXTENSION_MAPPING      =
+
+# If the MARKDOWN_SUPPORT tag is enabled then doxygen pre-processes all comments
+# according to the Markdown format, which allows for more readable
+# documentation. See http://daringfireball.net/projects/markdown/ for details.
+# The output of markdown processing is further processed by doxygen, so you can
+# mix doxygen, HTML, and XML commands with Markdown formatting. Disable only in
+# case of backward compatibilities issues.
+# The default value is: YES.
+
+MARKDOWN_SUPPORT       = YES
+
+# When the TOC_INCLUDE_HEADINGS tag is set to a non-zero value, all headings up
+# to that level are automatically included in the table of contents, even if
+# they do not have an id attribute.
+# Note: This feature currently applies only to Markdown headings.
+# Minimum value: 0, maximum value: 99, default value: 0.
+# This tag requires that the tag MARKDOWN_SUPPORT is set to YES.
+
+TOC_INCLUDE_HEADINGS   = 0
+
+# When enabled doxygen tries to link words that correspond to documented
+# classes, or namespaces to their corresponding documentation. Such a link can
+# be prevented in individual cases by putting a % sign in front of the word or
+# globally by setting AUTOLINK_SUPPORT to NO.
+# The default value is: YES.
+
+AUTOLINK_SUPPORT       = YES
+
+# If you use STL classes (i.e. std::string, std::vector, etc.) but do not want
+# to include (a tag file for) the STL sources as input, then you should set this
+# tag to YES in order to let doxygen match functions declarations and
+# definitions whose arguments contain STL classes (e.g. func(std::string);
+# versus func(std::string) {}). This also make the inheritance and collaboration
+# diagrams that involve STL classes more complete and accurate.
+# The default value is: NO.
+
+BUILTIN_STL_SUPPORT    = NO
+
+# If you use Microsoft's C++/CLI language, you should set this option to YES to
+# enable parsing support.
+# The default value is: NO.
+
+CPP_CLI_SUPPORT        = NO
+
+# Set the SIP_SUPPORT tag to YES if your project consists of sip (see:
+# http://www.riverbankcomputing.co.uk/software/sip/intro) sources only. Doxygen
+# will parse them like normal C++ but will assume all classes use public instead
+# of private inheritance when no explicit protection keyword is present.
+# The default value is: NO.
+
+SIP_SUPPORT            = NO
+
+# For Microsoft's IDL there are propget and propput attributes to indicate
+# getter and setter methods for a property. Setting this option to YES will make
+# doxygen to replace the get and set methods by a property in the documentation.
+# This will only work if the methods are indeed getting or setting a simple
+# type. If this is not the case, or you want to show the methods anyway, you
+# should set this option to NO.
+# The default value is: YES.
+
+IDL_PROPERTY_SUPPORT   = YES
+
+# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC
+# tag is set to YES then doxygen will reuse the documentation of the first
+# member in the group (if any) for the other members of the group. By default
+# all members of a group must be documented explicitly.
+# The default value is: NO.
+
+DISTRIBUTE_GROUP_DOC   = NO
+
+# If one adds a struct or class to a group and this option is enabled, then also
+# any nested class or struct is added to the same group. By default this option
+# is disabled and one has to add nested compounds explicitly via \ingroup.
+# The default value is: NO.
+
+GROUP_NESTED_COMPOUNDS = NO
+
+# Set the SUBGROUPING tag to YES to allow class member groups of the same type
+# (for instance a group of public functions) to be put as a subgroup of that
+# type (e.g. under the Public Functions section). Set it to NO to prevent
+# subgrouping. Alternatively, this can be done per class using the
+# \nosubgrouping command.
+# The default value is: YES.
+
+SUBGROUPING            = YES
+
+# When the INLINE_GROUPED_CLASSES tag is set to YES, classes, structs and unions
+# are shown inside the group in which they are included (e.g. using \ingroup)
+# instead of on a separate page (for HTML and Man pages) or section (for LaTeX
+# and RTF).
+#
+# Note that this feature does not work in combination with
+# SEPARATE_MEMBER_PAGES.
+# The default value is: NO.
+
+INLINE_GROUPED_CLASSES = NO
+
+# When the INLINE_SIMPLE_STRUCTS tag is set to YES, structs, classes, and unions
+# with only public data fields or simple typedef fields will be shown inline in
+# the documentation of the scope in which they are defined (i.e. file,
+# namespace, or group documentation), provided this scope is documented. If set
+# to NO, structs, classes, and unions are shown on a separate page (for HTML and
+# Man pages) or section (for LaTeX and RTF).
+# The default value is: NO.
+
+INLINE_SIMPLE_STRUCTS  = NO
+
+# When TYPEDEF_HIDES_STRUCT tag is enabled, a typedef of a struct, union, or
+# enum is documented as struct, union, or enum with the name of the typedef. So
+# typedef struct TypeS {} TypeT, will appear in the documentation as a struct
+# with name TypeT. When disabled the typedef will appear as a member of a file,
+# namespace, or class. And the struct will be named TypeS. This can typically be
+# useful for C code in case the coding convention dictates that all compound
+# types are typedef'ed and only the typedef is referenced, never the tag name.
+# The default value is: NO.
+
+TYPEDEF_HIDES_STRUCT   = NO
+
+# The size of the symbol lookup cache can be set using LOOKUP_CACHE_SIZE. This
+# cache is used to resolve symbols given their name and scope. Since this can be
+# an expensive process and often the same symbol appears multiple times in the
+# code, doxygen keeps a cache of pre-resolved symbols. If the cache is too small
+# doxygen will become slower. If the cache is too large, memory is wasted. The
+# cache size is given by this formula: 2^(16+LOOKUP_CACHE_SIZE). The valid range
+# is 0..9, the default is 0, corresponding to a cache size of 2^16=65536
+# symbols. At the end of a run doxygen will report the cache usage and suggest
+# the optimal cache size from a speed point of view.
+# Minimum value: 0, maximum value: 9, default value: 0.
+
+LOOKUP_CACHE_SIZE      = 0
+
+#---------------------------------------------------------------------------
+# Build related configuration options
+#---------------------------------------------------------------------------
+
+# If the EXTRACT_ALL tag is set to YES, doxygen will assume all entities in
+# documentation are documented, even if no documentation was available. Private
+# class members and static file members will be hidden unless the
+# EXTRACT_PRIVATE respectively EXTRACT_STATIC tags are set to YES.
+# Note: This will also disable the warnings about undocumented members that are
+# normally produced when WARNINGS is set to YES.
+# The default value is: NO.
+
+EXTRACT_ALL            = NO
+
+# If the EXTRACT_PRIVATE tag is set to YES, all private members of a class will
+# be included in the documentation.
+# The default value is: NO.
+
+EXTRACT_PRIVATE        = NO
+
+# If the EXTRACT_PACKAGE tag is set to YES, all members with package or internal
+# scope will be included in the documentation.
+# The default value is: NO.
+
+EXTRACT_PACKAGE        = NO
+
+# If the EXTRACT_STATIC tag is set to YES, all static members of a file will be
+# included in the documentation.
+# The default value is: NO.
+
+EXTRACT_STATIC         = NO
+
+# If the EXTRACT_LOCAL_CLASSES tag is set to YES, classes (and structs) defined
+# locally in source files will be included in the documentation. If set to NO,
+# only classes defined in header files are included. Does not have any effect
+# for Java sources.
+# The default value is: YES.
+
+EXTRACT_LOCAL_CLASSES  = YES
+
+# This flag is only useful for Objective-C code. If set to YES, local methods,
+# which are defined in the implementation section but not in the interface are
+# included in the documentation. If set to NO, only methods in the interface are
+# included.
+# The default value is: NO.
+
+EXTRACT_LOCAL_METHODS  = NO
+
+# If this flag is set to YES, the members of anonymous namespaces will be
+# extracted and appear in the documentation as a namespace called
+# 'anonymous_namespace{file}', where file will be replaced with the base name of
+# the file that contains the anonymous namespace. By default anonymous namespace
+# are hidden.
+# The default value is: NO.
+
+EXTRACT_ANON_NSPACES   = NO
+
+# If the HIDE_UNDOC_MEMBERS tag is set to YES, doxygen will hide all
+# undocumented members inside documented classes or files. If set to NO these
+# members will be included in the various overviews, but no documentation
+# section is generated. This option has no effect if EXTRACT_ALL is enabled.
+# The default value is: NO.
+
+HIDE_UNDOC_MEMBERS     = YES
+
+# If the HIDE_UNDOC_CLASSES tag is set to YES, doxygen will hide all
+# undocumented classes that are normally visible in the class hierarchy. If set
+# to NO, these classes will be included in the various overviews. This option
+# has no effect if EXTRACT_ALL is enabled.
+# The default value is: NO.
+
+HIDE_UNDOC_CLASSES     = YES
+
+# If the HIDE_FRIEND_COMPOUNDS tag is set to YES, doxygen will hide all friend
+# (class|struct|union) declarations. If set to NO, these declarations will be
+# included in the documentation.
+# The default value is: NO.
+
+HIDE_FRIEND_COMPOUNDS  = NO
+
+# If the HIDE_IN_BODY_DOCS tag is set to YES, doxygen will hide any
+# documentation blocks found inside the body of a function. If set to NO, these
+# blocks will be appended to the function's detailed documentation block.
+# The default value is: NO.
+
+HIDE_IN_BODY_DOCS      = NO
+
+# The INTERNAL_DOCS tag determines if documentation that is typed after a
+# \internal command is included. If the tag is set to NO then the documentation
+# will be excluded. Set it to YES to include the internal documentation.
+# The default value is: NO.
+
+INTERNAL_DOCS          = NO
+
+# If the CASE_SENSE_NAMES tag is set to NO then doxygen will only generate file
+# names in lower-case letters. If set to YES, upper-case letters are also
+# allowed. This is useful if you have classes or files whose names only differ
+# in case and if your file system supports case sensitive file names. Windows
+# and Mac users are advised to set this option to NO.
+# The default value is: system dependent.
+
+CASE_SENSE_NAMES       = NO
+
+# If the HIDE_SCOPE_NAMES tag is set to NO then doxygen will show members with
+# their full class and namespace scopes in the documentation. If set to YES, the
+# scope will be hidden.
+# The default value is: NO.
+
+HIDE_SCOPE_NAMES       = NO
+
+# If the HIDE_COMPOUND_REFERENCE tag is set to NO (default) then doxygen will
+# append additional text to a page's title, such as Class Reference. If set to
+# YES the compound reference will be hidden.
+# The default value is: NO.
+
+HIDE_COMPOUND_REFERENCE= NO
+
+# If the SHOW_INCLUDE_FILES tag is set to YES then doxygen will put a list of
+# the files that are included by a file in the documentation of that file.
+# The default value is: YES.
+
+SHOW_INCLUDE_FILES     = YES
+
+# If the SHOW_GROUPED_MEMB_INC tag is set to YES then Doxygen will add for each
+# grouped member an include statement to the documentation, telling the reader
+# which file to include in order to use the member.
+# The default value is: NO.
+
+SHOW_GROUPED_MEMB_INC  = NO
+
+# If the FORCE_LOCAL_INCLUDES tag is set to YES then doxygen will list include
+# files with double quotes in the documentation rather than with sharp brackets.
+# The default value is: NO.
+
+FORCE_LOCAL_INCLUDES   = NO
+
+# If the INLINE_INFO tag is set to YES then a tag [inline] is inserted in the
+# documentation for inline members.
+# The default value is: YES.
+
+INLINE_INFO            = YES
+
+# If the SORT_MEMBER_DOCS tag is set to YES then doxygen will sort the
+# (detailed) documentation of file and class members alphabetically by member
+# name. If set to NO, the members will appear in declaration order.
+# The default value is: YES.
+
+SORT_MEMBER_DOCS       = YES
+
+# If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the brief
+# descriptions of file, namespace and class members alphabetically by member
+# name. If set to NO, the members will appear in declaration order. Note that
+# this will also influence the order of the classes in the class list.
+# The default value is: NO.
+
+SORT_BRIEF_DOCS        = NO
+
+# If the SORT_MEMBERS_CTORS_1ST tag is set to YES then doxygen will sort the
+# (brief and detailed) documentation of class members so that constructors and
+# destructors are listed first. If set to NO the constructors will appear in the
+# respective orders defined by SORT_BRIEF_DOCS and SORT_MEMBER_DOCS.
+# Note: If SORT_BRIEF_DOCS is set to NO this option is ignored for sorting brief
+# member documentation.
+# Note: If SORT_MEMBER_DOCS is set to NO this option is ignored for sorting
+# detailed member documentation.
+# The default value is: NO.
+
+SORT_MEMBERS_CTORS_1ST = NO
+
+# If the SORT_GROUP_NAMES tag is set to YES then doxygen will sort the hierarchy
+# of group names into alphabetical order. If set to NO the group names will
+# appear in their defined order.
+# The default value is: NO.
+
+SORT_GROUP_NAMES       = NO
+
+# If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be sorted by
+# fully-qualified names, including namespaces. If set to NO, the class list will
+# be sorted only by class name, not including the namespace part.
+# Note: This option is not very useful if HIDE_SCOPE_NAMES is set to YES.
+# Note: This option applies only to the class list, not to the alphabetical
+# list.
+# The default value is: NO.
+
+SORT_BY_SCOPE_NAME     = NO
+
+# If the STRICT_PROTO_MATCHING option is enabled and doxygen fails to do proper
+# type resolution of all parameters of a function it will reject a match between
+# the prototype and the implementation of a member function even if there is
+# only one candidate or it is obvious which candidate to choose by doing a
+# simple string match. By disabling STRICT_PROTO_MATCHING doxygen will still
+# accept a match between prototype and implementation in such cases.
+# The default value is: NO.
+
+STRICT_PROTO_MATCHING  = NO
+
+# The GENERATE_TODOLIST tag can be used to enable (YES) or disable (NO) the todo
+# list. This list is created by putting \todo commands in the documentation.
+# The default value is: YES.
+
+GENERATE_TODOLIST      = NO
+
+# The GENERATE_TESTLIST tag can be used to enable (YES) or disable (NO) the test
+# list. This list is created by putting \test commands in the documentation.
+# The default value is: YES.
+
+GENERATE_TESTLIST      = YES
+
+# The GENERATE_BUGLIST tag can be used to enable (YES) or disable (NO) the bug
+# list. This list is created by putting \bug commands in the documentation.
+# The default value is: YES.
+
+GENERATE_BUGLIST       = YES
+
+# The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or disable (NO)
+# the deprecated list. This list is created by putting \deprecated commands in
+# the documentation.
+# The default value is: YES.
+
+GENERATE_DEPRECATEDLIST= YES
+
+# The ENABLED_SECTIONS tag can be used to enable conditional documentation
+# sections, marked by \if <section_label> ... \endif and \cond <section_label>
+# ... \endcond blocks.
+
+ENABLED_SECTIONS       =
+
+# The MAX_INITIALIZER_LINES tag determines the maximum number of lines that the
+# initial value of a variable or macro / define can have for it to appear in the
+# documentation. If the initializer consists of more lines than specified here
+# it will be hidden. Use a value of 0 to hide initializers completely. The
+# appearance of the value of individual variables and macros / defines can be
+# controlled using \showinitializer or \hideinitializer command in the
+# documentation regardless of this setting.
+# Minimum value: 0, maximum value: 10000, default value: 30.
+
+MAX_INITIALIZER_LINES  = 30
+
+# Set the SHOW_USED_FILES tag to NO to disable the list of files generated at
+# the bottom of the documentation of classes and structs. If set to YES, the
+# list will mention the files that were used to generate the documentation.
+# The default value is: YES.
+
+SHOW_USED_FILES        = YES
+
+# Set the SHOW_FILES tag to NO to disable the generation of the Files page. This
+# will remove the Files entry from the Quick Index and from the Folder Tree View
+# (if specified).
+# The default value is: YES.
+
+SHOW_FILES             = YES
+
+# Set the SHOW_NAMESPACES tag to NO to disable the generation of the Namespaces
+# page. This will remove the Namespaces entry from the Quick Index and from the
+# Folder Tree View (if specified).
+# The default value is: YES.
+
+SHOW_NAMESPACES        = YES
+
+# The FILE_VERSION_FILTER tag can be used to specify a program or script that
+# doxygen should invoke to get the current version for each file (typically from
+# the version control system). Doxygen will invoke the program by executing (via
+# popen()) the command command input-file, where command is the value of the
+# FILE_VERSION_FILTER tag, and input-file is the name of an input file provided
+# by doxygen. Whatever the program writes to standard output is used as the file
+# version. For an example see the documentation.
+
+FILE_VERSION_FILTER    =
+
+# The LAYOUT_FILE tag can be used to specify a layout file which will be parsed
+# by doxygen. The layout file controls the global structure of the generated
+# output files in an output format independent way. To create the layout file
+# that represents doxygen's defaults, run doxygen with the -l option. You can
+# optionally specify a file name after the option, if omitted DoxygenLayout.xml
+# will be used as the name of the layout file.
+#
+# Note that if you run doxygen from a directory containing a file called
+# DoxygenLayout.xml, doxygen will parse it automatically even if the LAYOUT_FILE
+# tag is left empty.
+
+LAYOUT_FILE            =
+
+# The CITE_BIB_FILES tag can be used to specify one or more bib files containing
+# the reference definitions. This must be a list of .bib files. The .bib
+# extension is automatically appended if omitted. This requires the bibtex tool
+# to be installed. See also http://en.wikipedia.org/wiki/BibTeX for more info.
+# For LaTeX the style of the bibliography can be controlled using
+# LATEX_BIB_STYLE. To use this feature you need bibtex and perl available in the
+# search path. See also \cite for info how to create references.
+
+CITE_BIB_FILES         =
+
+#---------------------------------------------------------------------------
+# Configuration options related to warning and progress messages
+#---------------------------------------------------------------------------
+
+# The QUIET tag can be used to turn on/off the messages that are generated to
+# standard output by doxygen. If QUIET is set to YES this implies that the
+# messages are off.
+# The default value is: NO.
+
+QUIET                  = NO
+
+# The WARNINGS tag can be used to turn on/off the warning messages that are
+# generated to standard error (stderr) by doxygen. If WARNINGS is set to YES
+# this implies that the warnings are on.
+#
+# Tip: Turn warnings on while writing the documentation.
+# The default value is: YES.
+
+WARNINGS               = YES
+
+# If the WARN_IF_UNDOCUMENTED tag is set to YES then doxygen will generate
+# warnings for undocumented members. If EXTRACT_ALL is set to YES then this flag
+# will automatically be disabled.
+# The default value is: YES.
+
+WARN_IF_UNDOCUMENTED   = YES
+
+# If the WARN_IF_DOC_ERROR tag is set to YES, doxygen will generate warnings for
+# potential errors in the documentation, such as not documenting some parameters
+# in a documented function, or documenting parameters that don't exist or using
+# markup commands wrongly.
+# The default value is: YES.
+
+WARN_IF_DOC_ERROR      = YES
+
+# This WARN_NO_PARAMDOC option can be enabled to get warnings for functions that
+# are documented, but have no documentation for their parameters or return
+# value. If set to NO, doxygen will only warn about wrong or incomplete
+# parameter documentation, but not about the absence of documentation.
+# The default value is: NO.
+
+WARN_NO_PARAMDOC       = NO
+
+# If the WARN_AS_ERROR tag is set to YES then doxygen will immediately stop when
+# a warning is encountered.
+# The default value is: NO.
+
+WARN_AS_ERROR          = NO
+
+# The WARN_FORMAT tag determines the format of the warning messages that doxygen
+# can produce. The string should contain the $file, $line, and $text tags, which
+# will be replaced by the file and line number from which the warning originated
+# and the warning text. Optionally the format may contain $version, which will
+# be replaced by the version of the file (if it could be obtained via
+# FILE_VERSION_FILTER)
+# The default value is: $file:$line: $text.
+
+WARN_FORMAT            = "$file:$line: $text       "
+
+# The WARN_LOGFILE tag can be used to specify a file to which warning and error
+# messages should be written. If left blank the output is written to standard
+# error (stderr).
+
+WARN_LOGFILE           =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the input files
+#---------------------------------------------------------------------------
+
+# The INPUT tag is used to specify the files and/or directories that contain
+# documented source files. You may enter file names like myfile.cpp or
+# directories like /usr/src/myproject. Separate the files or directories with
+# spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
+# Note: If this tag is empty the current directory is searched.
+
+INPUT                  = main_page.h \
+                         ../../src
+
+# This tag can be used to specify the character encoding of the source files
+# that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
+# libiconv (or the iconv built into libc) for the transcoding. See the libiconv
+# documentation (see: http://www.gnu.org/software/libiconv) for the list of
+# possible encodings.
+# The default value is: UTF-8.
+
+INPUT_ENCODING         = UTF-8
+
+# If the value of the INPUT tag contains directories, you can use the
+# FILE_PATTERNS tag to specify one or more wildcard patterns (like *.cpp and
+# *.h) to filter out the source-files in the directories.
+#
+# Note that for custom extensions or not directly supported extensions you also
+# need to set EXTENSION_MAPPING for the extension otherwise the files are not
+# read by doxygen.
+#
+# If left blank the following patterns are tested:*.c, *.cc, *.cxx, *.cpp,
+# *.c++, *.java, *.ii, *.ixx, *.ipp, *.i++, *.inl, *.idl, *.ddl, *.odl, *.h,
+# *.hh, *.hxx, *.hpp, *.h++, *.cs, *.d, *.php, *.php4, *.php5, *.phtml, *.inc,
+# *.m, *.markdown, *.md, *.mm, *.dox, *.py, *.pyw, *.f90, *.f95, *.f03, *.f08,
+# *.f, *.for, *.tcl, *.vhd, *.vhdl, *.ucf and *.qsf.
+
+FILE_PATTERNS          = *.c \
+                         *.cc \
+                         *.cxx \
+                         *.cpp \
+                         *.c++ \
+                         *.java \
+                         *.ii \
+                         *.ixx \
+                         *.ipp \
+                         *.i++ \
+                         *.inl \
+                         *.h \
+                         *.hh \
+                         *.hxx \
+                         *.hpp \
+                         *.h++ \
+                         *.idl \
+                         *.odl \
+                         *.inc \
+                         *.m \
+                         *.mm \
+                         *.dox
+
+# The RECURSIVE tag can be used to specify whether or not subdirectories should
+# be searched for input files as well.
+# The default value is: NO.
+
+RECURSIVE              = YES
+
+# The EXCLUDE tag can be used to specify files and/or directories that should be
+# excluded from the INPUT source files. This way you can easily exclude a
+# subdirectory from a directory tree whose root is specified with the INPUT tag.
+#
+# Note that relative paths are relative to the directory from which doxygen is
+# run.
+
+EXCLUDE                = ../../src/include/netif/ppp/polarssl
+
+# The EXCLUDE_SYMLINKS tag can be used to select whether or not files or
+# directories that are symbolic links (a Unix file system feature) are excluded
+# from the input.
+# The default value is: NO.
+
+EXCLUDE_SYMLINKS       = NO
+
+# If the value of the INPUT tag contains directories, you can use the
+# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude
+# certain files from those directories.
+#
+# Note that the wildcards are matched against the file with absolute path, so to
+# exclude all test directories for example use the pattern */test/*
+
+EXCLUDE_PATTERNS       =
+
+# The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names
+# (namespaces, classes, functions, etc.) that should be excluded from the
+# output. The symbol name can be a fully qualified name, a word, or if the
+# wildcard * is used, a substring. Examples: ANamespace, AClass,
+# AClass::ANamespace, ANamespace::*Test
+#
+# Note that the wildcards are matched against the file with absolute path, so to
+# exclude all test directories use the pattern */test/*
+
+EXCLUDE_SYMBOLS        =
+
+# The EXAMPLE_PATH tag can be used to specify one or more files or directories
+# that contain example code fragments that are included (see the \include
+# command).
+
+EXAMPLE_PATH           = ../ \
+                         ../../
+
+# If the value of the EXAMPLE_PATH tag contains directories, you can use the
+# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp and
+# *.h) to filter out the source-files in the directories. If left blank all
+# files are included.
+
+EXAMPLE_PATTERNS       = *
+
+# If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be
+# searched for input files to be used with the \include or \dontinclude commands
+# irrespective of the value of the RECURSIVE tag.
+# The default value is: NO.
+
+EXAMPLE_RECURSIVE      = NO
+
+# The IMAGE_PATH tag can be used to specify one or more files or directories
+# that contain images that are to be included in the documentation (see the
+# \image command).
+
+IMAGE_PATH             =
+
+# The INPUT_FILTER tag can be used to specify a program that doxygen should
+# invoke to filter for each input file. Doxygen will invoke the filter program
+# by executing (via popen()) the command:
+#
+# <filter> <input-file>
+#
+# where <filter> is the value of the INPUT_FILTER tag, and <input-file> is the
+# name of an input file. Doxygen will then use the output that the filter
+# program writes to standard output. If FILTER_PATTERNS is specified, this tag
+# will be ignored.
+#
+# Note that the filter must not add or remove lines; it is applied before the
+# code is scanned, but not when the output code is generated. If lines are added
+# or removed, the anchors will not be placed correctly.
+#
+# Note that for custom extensions or not directly supported extensions you also
+# need to set EXTENSION_MAPPING for the extension otherwise the files are not
+# properly processed by doxygen.
+
+INPUT_FILTER           =
+
+# The FILTER_PATTERNS tag can be used to specify filters on a per file pattern
+# basis. Doxygen will compare the file name with each pattern and apply the
+# filter if there is a match. The filters are a list of the form: pattern=filter
+# (like *.cpp=my_cpp_filter). See INPUT_FILTER for further information on how
+# filters are used. If the FILTER_PATTERNS tag is empty or if none of the
+# patterns match the file name, INPUT_FILTER is applied.
+#
+# Note that for custom extensions or not directly supported extensions you also
+# need to set EXTENSION_MAPPING for the extension otherwise the files are not
+# properly processed by doxygen.
+
+FILTER_PATTERNS        =
+
+# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using
+# INPUT_FILTER) will also be used to filter the input files that are used for
+# producing the source files to browse (i.e. when SOURCE_BROWSER is set to YES).
+# The default value is: NO.
+
+FILTER_SOURCE_FILES    = NO
+
+# The FILTER_SOURCE_PATTERNS tag can be used to specify source filters per file
+# pattern. A pattern will override the setting for FILTER_PATTERN (if any) and
+# it is also possible to disable source filtering for a specific pattern using
+# *.ext= (so without naming a filter).
+# This tag requires that the tag FILTER_SOURCE_FILES is set to YES.
+
+FILTER_SOURCE_PATTERNS =
+
+# If the USE_MDFILE_AS_MAINPAGE tag refers to the name of a markdown file that
+# is part of the input, its contents will be placed on the main page
+# (index.html). This can be useful if you have a project on for instance GitHub
+# and want to reuse the introduction page also for the doxygen output.
+
+USE_MDFILE_AS_MAINPAGE = main_page.h
+
+#---------------------------------------------------------------------------
+# Configuration options related to source browsing
+#---------------------------------------------------------------------------
+
+# If the SOURCE_BROWSER tag is set to YES then a list of source files will be
+# generated. Documented entities will be cross-referenced with these sources.
+#
+# Note: To get rid of all source code in the generated output, make sure that
+# also VERBATIM_HEADERS is set to NO.
+# The default value is: NO.
+
+SOURCE_BROWSER         = NO
+
+# Setting the INLINE_SOURCES tag to YES will include the body of functions,
+# classes and enums directly into the documentation.
+# The default value is: NO.
+
+INLINE_SOURCES         = NO
+
+# Setting the STRIP_CODE_COMMENTS tag to YES will instruct doxygen to hide any
+# special comment blocks from generated source code fragments. Normal C, C++ and
+# Fortran comments will always remain visible.
+# The default value is: YES.
+
+STRIP_CODE_COMMENTS    = YES
+
+# If the REFERENCED_BY_RELATION tag is set to YES then for each documented
+# function all documented functions referencing it will be listed.
+# The default value is: NO.
+
+REFERENCED_BY_RELATION = NO
+
+# If the REFERENCES_RELATION tag is set to YES then for each documented function
+# all documented entities called/used by that function will be listed.
+# The default value is: NO.
+
+REFERENCES_RELATION    = NO
+
+# If the REFERENCES_LINK_SOURCE tag is set to YES and SOURCE_BROWSER tag is set
+# to YES then the hyperlinks from functions in REFERENCES_RELATION and
+# REFERENCED_BY_RELATION lists will link to the source code. Otherwise they will
+# link to the documentation.
+# The default value is: YES.
+
+REFERENCES_LINK_SOURCE = YES
+
+# If SOURCE_TOOLTIPS is enabled (the default) then hovering a hyperlink in the
+# source code will show a tooltip with additional information such as prototype,
+# brief description and links to the definition and documentation. Since this
+# will make the HTML file larger and loading of large files a bit slower, you
+# can opt to disable this feature.
+# The default value is: YES.
+# This tag requires that the tag SOURCE_BROWSER is set to YES.
+
+SOURCE_TOOLTIPS        = YES
+
+# If the USE_HTAGS tag is set to YES then the references to source code will
+# point to the HTML generated by the htags(1) tool instead of doxygen built-in
+# source browser. The htags tool is part of GNU's global source tagging system
+# (see http://www.gnu.org/software/global/global.html). You will need version
+# 4.8.6 or higher.
+#
+# To use it do the following:
+# - Install the latest version of global
+# - Enable SOURCE_BROWSER and USE_HTAGS in the config file
+# - Make sure the INPUT points to the root of the source tree
+# - Run doxygen as normal
+#
+# Doxygen will invoke htags (and that will in turn invoke gtags), so these
+# tools must be available from the command line (i.e. in the search path).
+#
+# The result: instead of the source browser generated by doxygen, the links to
+# source code will now point to the output of htags.
+# The default value is: NO.
+# This tag requires that the tag SOURCE_BROWSER is set to YES.
+
+USE_HTAGS              = NO
+
+# If the VERBATIM_HEADERS tag is set the YES then doxygen will generate a
+# verbatim copy of the header file for each class for which an include is
+# specified. Set to NO to disable this.
+# See also: Section \class.
+# The default value is: YES.
+
+VERBATIM_HEADERS       = NO
+
+# If the CLANG_ASSISTED_PARSING tag is set to YES then doxygen will use the
+# clang parser (see: http://clang.llvm.org/) for more accurate parsing at the
+# cost of reduced performance. This can be particularly helpful with template
+# rich C++ code for which doxygen's built-in parser lacks the necessary type
+# information.
+# Note: The availability of this option depends on whether or not doxygen was
+# generated with the -Duse-libclang=ON option for CMake.
+# The default value is: NO.
+
+CLANG_ASSISTED_PARSING = NO
+
+# If clang assisted parsing is enabled you can provide the compiler with command
+# line options that you would normally use when invoking the compiler. Note that
+# the include paths will already be set by doxygen for the files and directories
+# specified with INPUT and INCLUDE_PATH.
+# This tag requires that the tag CLANG_ASSISTED_PARSING is set to YES.
+
+CLANG_OPTIONS          =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the alphabetical class index
+#---------------------------------------------------------------------------
+
+# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index of all
+# compounds will be generated. Enable this if the project contains a lot of
+# classes, structs, unions or interfaces.
+# The default value is: YES.
+
+ALPHABETICAL_INDEX     = NO
+
+# The COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns in
+# which the alphabetical index list will be split.
+# Minimum value: 1, maximum value: 20, default value: 5.
+# This tag requires that the tag ALPHABETICAL_INDEX is set to YES.
+
+COLS_IN_ALPHA_INDEX    = 5
+
+# In case all classes in a project start with a common prefix, all classes will
+# be put under the same header in the alphabetical index. The IGNORE_PREFIX tag
+# can be used to specify a prefix (or a list of prefixes) that should be ignored
+# while generating the index headers.
+# This tag requires that the tag ALPHABETICAL_INDEX is set to YES.
+
+IGNORE_PREFIX          =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the HTML output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_HTML tag is set to YES, doxygen will generate HTML output
+# The default value is: YES.
+
+GENERATE_HTML          = YES
+
+# The HTML_OUTPUT tag is used to specify where the HTML docs will be put. If a
+# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
+# it.
+# The default directory is: html.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_OUTPUT            = html
+
+# The HTML_FILE_EXTENSION tag can be used to specify the file extension for each
+# generated HTML page (for example: .htm, .php, .asp).
+# The default value is: .html.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_FILE_EXTENSION    = .html
+
+# The HTML_HEADER tag can be used to specify a user-defined HTML header file for
+# each generated HTML page. If the tag is left blank doxygen will generate a
+# standard header.
+#
+# To get valid HTML the header file that includes any scripts and style sheets
+# that doxygen needs, which is dependent on the configuration options used (e.g.
+# the setting GENERATE_TREEVIEW). It is highly recommended to start with a
+# default header using
+# doxygen -w html new_header.html new_footer.html new_stylesheet.css
+# YourConfigFile
+# and then modify the file new_header.html. See also section "Doxygen usage"
+# for information on how to generate the default header that doxygen normally
+# uses.
+# Note: The header is subject to change so you typically have to regenerate the
+# default header when upgrading to a newer version of doxygen. For a description
+# of the possible markers and block names see the documentation.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_HEADER            =
+
+# The HTML_FOOTER tag can be used to specify a user-defined HTML footer for each
+# generated HTML page. If the tag is left blank doxygen will generate a standard
+# footer. See HTML_HEADER for more information on how to generate a default
+# footer and what special commands can be used inside the footer. See also
+# section "Doxygen usage" for information on how to generate the default footer
+# that doxygen normally uses.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_FOOTER            =
+
+# The HTML_STYLESHEET tag can be used to specify a user-defined cascading style
+# sheet that is used by each HTML page. It can be used to fine-tune the look of
+# the HTML output. If left blank doxygen will generate a default style sheet.
+# See also section "Doxygen usage" for information on how to generate the style
+# sheet that doxygen normally uses.
+# Note: It is recommended to use HTML_EXTRA_STYLESHEET instead of this tag, as
+# it is more robust and this tag (HTML_STYLESHEET) will in the future become
+# obsolete.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_STYLESHEET        =
+
+# The HTML_EXTRA_STYLESHEET tag can be used to specify additional user-defined
+# cascading style sheets that are included after the standard style sheets
+# created by doxygen. Using this option one can overrule certain style aspects.
+# This is preferred over using HTML_STYLESHEET since it does not replace the
+# standard style sheet and is therefore more robust against future updates.
+# Doxygen will copy the style sheet files to the output directory.
+# Note: The order of the extra style sheet files is of importance (e.g. the last
+# style sheet in the list overrules the setting of the previous ones in the
+# list). For an example see the documentation.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_EXTRA_STYLESHEET  =
+
+# The HTML_EXTRA_FILES tag can be used to specify one or more extra images or
+# other source files which should be copied to the HTML output directory. Note
+# that these files will be copied to the base HTML output directory. Use the
+# $relpath^ marker in the HTML_HEADER and/or HTML_FOOTER files to load these
+# files. In the HTML_STYLESHEET file, use the file name only. Also note that the
+# files will be copied as-is; there are no commands or markers available.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_EXTRA_FILES       =
+
+# The HTML_COLORSTYLE_HUE tag controls the color of the HTML output. Doxygen
+# will adjust the colors in the style sheet and background images according to
+# this color. Hue is specified as an angle on a colorwheel, see
+# http://en.wikipedia.org/wiki/Hue for more information. For instance the value
+# 0 represents red, 60 is yellow, 120 is green, 180 is cyan, 240 is blue, 300
+# purple, and 360 is red again.
+# Minimum value: 0, maximum value: 359, default value: 220.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_COLORSTYLE_HUE    = 220
+
+# The HTML_COLORSTYLE_SAT tag controls the purity (or saturation) of the colors
+# in the HTML output. For a value of 0 the output will use grayscales only. A
+# value of 255 will produce the most vivid colors.
+# Minimum value: 0, maximum value: 255, default value: 100.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_COLORSTYLE_SAT    = 100
+
+# The HTML_COLORSTYLE_GAMMA tag controls the gamma correction applied to the
+# luminance component of the colors in the HTML output. Values below 100
+# gradually make the output lighter, whereas values above 100 make the output
+# darker. The value divided by 100 is the actual gamma applied, so 80 represents
+# a gamma of 0.8, The value 220 represents a gamma of 2.2, and 100 does not
+# change the gamma.
+# Minimum value: 40, maximum value: 240, default value: 80.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_COLORSTYLE_GAMMA  = 80
+
+# If the HTML_TIMESTAMP tag is set to YES then the footer of each generated HTML
+# page will contain the date and time when the page was generated. Setting this
+# to YES can help to show when doxygen was last run and thus if the
+# documentation is up to date.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_TIMESTAMP         = NO
+
+# If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML
+# documentation will contain sections that can be hidden and shown after the
+# page has loaded.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_DYNAMIC_SECTIONS  = NO
+
+# With HTML_INDEX_NUM_ENTRIES one can control the preferred number of entries
+# shown in the various tree structured indices initially; the user can expand
+# and collapse entries dynamically later on. Doxygen will expand the tree to
+# such a level that at most the specified number of entries are visible (unless
+# a fully collapsed tree already exceeds this amount). So setting the number of
+# entries 1 will produce a full collapsed tree by default. 0 is a special value
+# representing an infinite number of entries and will result in a full expanded
+# tree by default.
+# Minimum value: 0, maximum value: 9999, default value: 100.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_INDEX_NUM_ENTRIES = 100
+
+# If the GENERATE_DOCSET tag is set to YES, additional index files will be
+# generated that can be used as input for Apple's Xcode 3 integrated development
+# environment (see: http://developer.apple.com/tools/xcode/), introduced with
+# OSX 10.5 (Leopard). To create a documentation set, doxygen will generate a
+# Makefile in the HTML output directory. Running make will produce the docset in
+# that directory and running make install will install the docset in
+# ~/Library/Developer/Shared/Documentation/DocSets so that Xcode will find it at
+# startup. See http://developer.apple.com/tools/creatingdocsetswithdoxygen.html
+# for more information.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+GENERATE_DOCSET        = NO
+
+# This tag determines the name of the docset feed. A documentation feed provides
+# an umbrella under which multiple documentation sets from a single provider
+# (such as a company or product suite) can be grouped.
+# The default value is: Doxygen generated docs.
+# This tag requires that the tag GENERATE_DOCSET is set to YES.
+
+DOCSET_FEEDNAME        = "Doxygen generated docs"
+
+# This tag specifies a string that should uniquely identify the documentation
+# set bundle. This should be a reverse domain-name style string, e.g.
+# com.mycompany.MyDocSet. Doxygen will append .docset to the name.
+# The default value is: org.doxygen.Project.
+# This tag requires that the tag GENERATE_DOCSET is set to YES.
+
+DOCSET_BUNDLE_ID       = org.doxygen.Project
+
+# The DOCSET_PUBLISHER_ID tag specifies a string that should uniquely identify
+# the documentation publisher. This should be a reverse domain-name style
+# string, e.g. com.mycompany.MyDocSet.documentation.
+# The default value is: org.doxygen.Publisher.
+# This tag requires that the tag GENERATE_DOCSET is set to YES.
+
+DOCSET_PUBLISHER_ID    = org.doxygen.Publisher
+
+# The DOCSET_PUBLISHER_NAME tag identifies the documentation publisher.
+# The default value is: Publisher.
+# This tag requires that the tag GENERATE_DOCSET is set to YES.
+
+DOCSET_PUBLISHER_NAME  = Publisher
+
+# If the GENERATE_HTMLHELP tag is set to YES then doxygen generates three
+# additional HTML index files: index.hhp, index.hhc, and index.hhk. The
+# index.hhp is a project file that can be read by Microsoft's HTML Help Workshop
+# (see: http://www.microsoft.com/en-us/download/details.aspx?id=21138) on
+# Windows.
+#
+# The HTML Help Workshop contains a compiler that can convert all HTML output
+# generated by doxygen into a single compiled HTML file (.chm). Compiled HTML
+# files are now used as the Windows 98 help format, and will replace the old
+# Windows help format (.hlp) on all Windows platforms in the future. Compressed
+# HTML files also contain an index, a table of contents, and you can search for
+# words in the documentation. The HTML workshop also contains a viewer for
+# compressed HTML files.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+GENERATE_HTMLHELP      = NO
+
+# The CHM_FILE tag can be used to specify the file name of the resulting .chm
+# file. You can add a path in front of the file if the result should not be
+# written to the html output directory.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+CHM_FILE               = lwip.chm
+
+# The HHC_LOCATION tag can be used to specify the location (absolute path
+# including file name) of the HTML help compiler (hhc.exe). If non-empty,
+# doxygen will try to run the HTML help compiler on the generated index.hhp.
+# The file has to be specified with full path.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+HHC_LOCATION           =
+
+# The GENERATE_CHI flag controls if a separate .chi index file is generated
+# (YES) or that it should be included in the master .chm file (NO).
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+GENERATE_CHI           = NO
+
+# The CHM_INDEX_ENCODING is used to encode HtmlHelp index (hhk), content (hhc)
+# and project file content.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+CHM_INDEX_ENCODING     =
+
+# The BINARY_TOC flag controls whether a binary table of contents is generated
+# (YES) or a normal table of contents (NO) in the .chm file. Furthermore it
+# enables the Previous and Next buttons.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+BINARY_TOC             = NO
+
+# The TOC_EXPAND flag can be set to YES to add extra items for group members to
+# the table of contents of the HTML help documentation and to the tree view.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTMLHELP is set to YES.
+
+TOC_EXPAND             = NO
+
+# If the GENERATE_QHP tag is set to YES and both QHP_NAMESPACE and
+# QHP_VIRTUAL_FOLDER are set, an additional index file will be generated that
+# can be used as input for Qt's qhelpgenerator to generate a Qt Compressed Help
+# (.qch) of the generated HTML documentation.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+GENERATE_QHP           = NO
+
+# If the QHG_LOCATION tag is specified, the QCH_FILE tag can be used to specify
+# the file name of the resulting .qch file. The path specified is relative to
+# the HTML output folder.
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QCH_FILE               =
+
+# The QHP_NAMESPACE tag specifies the namespace to use when generating Qt Help
+# Project output. For more information please see Qt Help Project / Namespace
+# (see: http://qt-project.org/doc/qt-4.8/qthelpproject.html#namespace).
+# The default value is: org.doxygen.Project.
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHP_NAMESPACE          = org.doxygen.Project
+
+# The QHP_VIRTUAL_FOLDER tag specifies the namespace to use when generating Qt
+# Help Project output. For more information please see Qt Help Project / Virtual
+# Folders (see: http://qt-project.org/doc/qt-4.8/qthelpproject.html#virtual-
+# folders).
+# The default value is: doc.
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHP_VIRTUAL_FOLDER     = doc
+
+# If the QHP_CUST_FILTER_NAME tag is set, it specifies the name of a custom
+# filter to add. For more information please see Qt Help Project / Custom
+# Filters (see: http://qt-project.org/doc/qt-4.8/qthelpproject.html#custom-
+# filters).
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHP_CUST_FILTER_NAME   =
+
+# The QHP_CUST_FILTER_ATTRS tag specifies the list of the attributes of the
+# custom filter to add. For more information please see Qt Help Project / Custom
+# Filters (see: http://qt-project.org/doc/qt-4.8/qthelpproject.html#custom-
+# filters).
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHP_CUST_FILTER_ATTRS  =
+
+# The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this
+# project's filter section matches. Qt Help Project / Filter Attributes (see:
+# http://qt-project.org/doc/qt-4.8/qthelpproject.html#filter-attributes).
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHP_SECT_FILTER_ATTRS  =
+
+# The QHG_LOCATION tag can be used to specify the location of Qt's
+# qhelpgenerator. If non-empty doxygen will try to run qhelpgenerator on the
+# generated .qhp file.
+# This tag requires that the tag GENERATE_QHP is set to YES.
+
+QHG_LOCATION           =
+
+# If the GENERATE_ECLIPSEHELP tag is set to YES, additional index files will be
+# generated, together with the HTML files, they form an Eclipse help plugin. To
+# install this plugin and make it available under the help contents menu in
+# Eclipse, the contents of the directory containing the HTML and XML files needs
+# to be copied into the plugins directory of eclipse. The name of the directory
+# within the plugins directory should be the same as the ECLIPSE_DOC_ID value.
+# After copying Eclipse needs to be restarted before the help appears.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+GENERATE_ECLIPSEHELP   = NO
+
+# A unique identifier for the Eclipse help plugin. When installing the plugin
+# the directory name containing the HTML and XML files should also have this
+# name. Each documentation set should have its own identifier.
+# The default value is: org.doxygen.Project.
+# This tag requires that the tag GENERATE_ECLIPSEHELP is set to YES.
+
+ECLIPSE_DOC_ID         = org.doxygen.Project
+
+# If you want full control over the layout of the generated HTML pages it might
+# be necessary to disable the index and replace it with your own. The
+# DISABLE_INDEX tag can be used to turn on/off the condensed index (tabs) at top
+# of each HTML page. A value of NO enables the index and the value YES disables
+# it. Since the tabs in the index contain the same information as the navigation
+# tree, you can set this option to YES if you also set GENERATE_TREEVIEW to YES.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+DISABLE_INDEX          = NO
+
+# The GENERATE_TREEVIEW tag is used to specify whether a tree-like index
+# structure should be generated to display hierarchical information. If the tag
+# value is set to YES, a side panel will be generated containing a tree-like
+# index structure (just like the one that is generated for HTML Help). For this
+# to work a browser that supports JavaScript, DHTML, CSS and frames is required
+# (i.e. any modern browser). Windows users are probably better off using the
+# HTML help feature. Via custom style sheets (see HTML_EXTRA_STYLESHEET) one can
+# further fine-tune the look of the index. As an example, the default style
+# sheet generated by doxygen has an example that shows how to put an image at
+# the root of the tree instead of the PROJECT_NAME. Since the tree basically has
+# the same information as the tab index, you could consider setting
+# DISABLE_INDEX to YES when enabling this option.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+GENERATE_TREEVIEW      = YES
+
+# The ENUM_VALUES_PER_LINE tag can be used to set the number of enum values that
+# doxygen will group on one line in the generated HTML documentation.
+#
+# Note that a value of 0 will completely suppress the enum values from appearing
+# in the overview section.
+# Minimum value: 0, maximum value: 20, default value: 4.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+ENUM_VALUES_PER_LINE   = 4
+
+# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be used
+# to set the initial width (in pixels) of the frame in which the tree is shown.
+# Minimum value: 0, maximum value: 1500, default value: 250.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+TREEVIEW_WIDTH         = 250
+
+# If the EXT_LINKS_IN_WINDOW option is set to YES, doxygen will open links to
+# external symbols imported via tag files in a separate window.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+EXT_LINKS_IN_WINDOW    = NO
+
+# Use this tag to change the font size of LaTeX formulas included as images in
+# the HTML documentation. When you change the font size after a successful
+# doxygen run you need to manually remove any form_*.png images from the HTML
+# output directory to force them to be regenerated.
+# Minimum value: 8, maximum value: 50, default value: 10.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+FORMULA_FONTSIZE       = 10
+
+# Use the FORMULA_TRANPARENT tag to determine whether or not the images
+# generated for formulas are transparent PNGs. Transparent PNGs are not
+# supported properly for IE 6.0, but are supported on all modern browsers.
+#
+# Note that when changing this option you need to delete any form_*.png files in
+# the HTML output directory before the changes have effect.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+FORMULA_TRANSPARENT    = YES
+
+# Enable the USE_MATHJAX option to render LaTeX formulas using MathJax (see
+# http://www.mathjax.org) which uses client side Javascript for the rendering
+# instead of using pre-rendered bitmaps. Use this if you do not have LaTeX
+# installed or if you want to formulas look prettier in the HTML output. When
+# enabled you may also need to install MathJax separately and configure the path
+# to it using the MATHJAX_RELPATH option.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+USE_MATHJAX            = NO
+
+# When MathJax is enabled you can set the default output format to be used for
+# the MathJax output. See the MathJax site (see:
+# http://docs.mathjax.org/en/latest/output.html) for more details.
+# Possible values are: HTML-CSS (which is slower, but has the best
+# compatibility), NativeMML (i.e. MathML) and SVG.
+# The default value is: HTML-CSS.
+# This tag requires that the tag USE_MATHJAX is set to YES.
+
+MATHJAX_FORMAT         = HTML-CSS
+
+# When MathJax is enabled you need to specify the location relative to the HTML
+# output directory using the MATHJAX_RELPATH option. The destination directory
+# should contain the MathJax.js script. For instance, if the mathjax directory
+# is located at the same level as the HTML output directory, then
+# MATHJAX_RELPATH should be ../mathjax. The default value points to the MathJax
+# Content Delivery Network so you can quickly see the result without installing
+# MathJax. However, it is strongly recommended to install a local copy of
+# MathJax from http://www.mathjax.org before deployment.
+# The default value is: http://cdn.mathjax.org/mathjax/latest.
+# This tag requires that the tag USE_MATHJAX is set to YES.
+
+MATHJAX_RELPATH        = http://cdn.mathjax.org/mathjax/latest
+
+# The MATHJAX_EXTENSIONS tag can be used to specify one or more MathJax
+# extension names that should be enabled during MathJax rendering. For example
+# MATHJAX_EXTENSIONS = TeX/AMSmath TeX/AMSsymbols
+# This tag requires that the tag USE_MATHJAX is set to YES.
+
+MATHJAX_EXTENSIONS     =
+
+# The MATHJAX_CODEFILE tag can be used to specify a file with javascript pieces
+# of code that will be used on startup of the MathJax code. See the MathJax site
+# (see: http://docs.mathjax.org/en/latest/output.html) for more details. For an
+# example see the documentation.
+# This tag requires that the tag USE_MATHJAX is set to YES.
+
+MATHJAX_CODEFILE       =
+
+# When the SEARCHENGINE tag is enabled doxygen will generate a search box for
+# the HTML output. The underlying search engine uses javascript and DHTML and
+# should work on any modern browser. Note that when using HTML help
+# (GENERATE_HTMLHELP), Qt help (GENERATE_QHP), or docsets (GENERATE_DOCSET)
+# there is already a search function so this one should typically be disabled.
+# For large projects the javascript based search engine can be slow, then
+# enabling SERVER_BASED_SEARCH may provide a better solution. It is possible to
+# search using the keyboard; to jump to the search box use <access key> + S
+# (what the <access key> is depends on the OS and browser, but it is typically
+# <CTRL>, <ALT>/<option>, or both). Inside the search box use the <cursor down
+# key> to jump into the search results window, the results can be navigated
+# using the <cursor keys>. Press <Enter> to select an item or <escape> to cancel
+# the search. The filter options can be selected when the cursor is inside the
+# search box by pressing <Shift>+<cursor down>. Also here use the <cursor keys>
+# to select a filter and <Enter> or <escape> to activate or cancel the filter
+# option.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+SEARCHENGINE           = YES
+
+# When the SERVER_BASED_SEARCH tag is enabled the search engine will be
+# implemented using a web server instead of a web client using Javascript. There
+# are two flavors of web server based searching depending on the EXTERNAL_SEARCH
+# setting. When disabled, doxygen will generate a PHP script for searching and
+# an index file used by the script. When EXTERNAL_SEARCH is enabled the indexing
+# and searching needs to be provided by external tools. See the section
+# "External Indexing and Searching" for details.
+# The default value is: NO.
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+SERVER_BASED_SEARCH    = NO
+
+# When EXTERNAL_SEARCH tag is enabled doxygen will no longer generate the PHP
+# script for searching. Instead the search results are written to an XML file
+# which needs to be processed by an external indexer. Doxygen will invoke an
+# external search engine pointed to by the SEARCHENGINE_URL option to obtain the
+# search results.
+#
+# Doxygen ships with an example indexer (doxyindexer) and search engine
+# (doxysearch.cgi) which are based on the open source search engine library
+# Xapian (see: http://xapian.org/).
+#
+# See the section "External Indexing and Searching" for details.
+# The default value is: NO.
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+EXTERNAL_SEARCH        = NO
+
+# The SEARCHENGINE_URL should point to a search engine hosted by a web server
+# which will return the search results when EXTERNAL_SEARCH is enabled.
+#
+# Doxygen ships with an example indexer (doxyindexer) and search engine
+# (doxysearch.cgi) which are based on the open source search engine library
+# Xapian (see: http://xapian.org/). See the section "External Indexing and
+# Searching" for details.
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+SEARCHENGINE_URL       =
+
+# When SERVER_BASED_SEARCH and EXTERNAL_SEARCH are both enabled the unindexed
+# search data is written to a file for indexing by an external tool. With the
+# SEARCHDATA_FILE tag the name of this file can be specified.
+# The default file is: searchdata.xml.
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+SEARCHDATA_FILE        = searchdata.xml
+
+# When SERVER_BASED_SEARCH and EXTERNAL_SEARCH are both enabled the
+# EXTERNAL_SEARCH_ID tag can be used as an identifier for the project. This is
+# useful in combination with EXTRA_SEARCH_MAPPINGS to search through multiple
+# projects and redirect the results back to the right project.
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+EXTERNAL_SEARCH_ID     =
+
+# The EXTRA_SEARCH_MAPPINGS tag can be used to enable searching through doxygen
+# projects other than the one defined by this configuration file, but that are
+# all added to the same external search index. Each project needs to have a
+# unique id set via EXTERNAL_SEARCH_ID. The search mapping then maps the id of
+# to a relative location where the documentation can be found. The format is:
+# EXTRA_SEARCH_MAPPINGS = tagname1=loc1 tagname2=loc2 ...
+# This tag requires that the tag SEARCHENGINE is set to YES.
+
+EXTRA_SEARCH_MAPPINGS  =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the LaTeX output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_LATEX tag is set to YES, doxygen will generate LaTeX output.
+# The default value is: YES.
+
+GENERATE_LATEX         = NO
+
+# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put. If a
+# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
+# it.
+# The default directory is: latex.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_OUTPUT           = latex
+
+# The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be
+# invoked.
+#
+# Note that when enabling USE_PDFLATEX this option is only used for generating
+# bitmaps for formulas in the HTML output, but not in the Makefile that is
+# written to the output directory.
+# The default file is: latex.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_CMD_NAME         = latex
+
+# The MAKEINDEX_CMD_NAME tag can be used to specify the command name to generate
+# index for LaTeX.
+# The default file is: makeindex.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+MAKEINDEX_CMD_NAME     = makeindex
+
+# If the COMPACT_LATEX tag is set to YES, doxygen generates more compact LaTeX
+# documents. This may be useful for small projects and may help to save some
+# trees in general.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+COMPACT_LATEX          = NO
+
+# The PAPER_TYPE tag can be used to set the paper type that is used by the
+# printer.
+# Possible values are: a4 (210 x 297 mm), letter (8.5 x 11 inches), legal (8.5 x
+# 14 inches) and executive (7.25 x 10.5 inches).
+# The default value is: a4.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+PAPER_TYPE             = a4wide
+
+# The EXTRA_PACKAGES tag can be used to specify one or more LaTeX package names
+# that should be included in the LaTeX output. The package can be specified just
+# by its name or with the correct syntax as to be used with the LaTeX
+# \usepackage command. To get the times font for instance you can specify :
+# EXTRA_PACKAGES=times or EXTRA_PACKAGES={times}
+# To use the option intlimits with the amsmath package you can specify:
+# EXTRA_PACKAGES=[intlimits]{amsmath}
+# If left blank no extra packages will be included.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+EXTRA_PACKAGES         =
+
+# The LATEX_HEADER tag can be used to specify a personal LaTeX header for the
+# generated LaTeX document. The header should contain everything until the first
+# chapter. If it is left blank doxygen will generate a standard header. See
+# section "Doxygen usage" for information on how to let doxygen write the
+# default header to a separate file.
+#
+# Note: Only use a user-defined header if you know what you are doing! The
+# following commands have a special meaning inside the header: $title,
+# $datetime, $date, $doxygenversion, $projectname, $projectnumber,
+# $projectbrief, $projectlogo. Doxygen will replace $title with the empty
+# string, for the replacement values of the other commands the user is referred
+# to HTML_HEADER.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_HEADER           =
+
+# The LATEX_FOOTER tag can be used to specify a personal LaTeX footer for the
+# generated LaTeX document. The footer should contain everything after the last
+# chapter. If it is left blank doxygen will generate a standard footer. See
+# LATEX_HEADER for more information on how to generate a default footer and what
+# special commands can be used inside the footer.
+#
+# Note: Only use a user-defined footer if you know what you are doing!
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_FOOTER           =
+
+# The LATEX_EXTRA_STYLESHEET tag can be used to specify additional user-defined
+# LaTeX style sheets that are included after the standard style sheets created
+# by doxygen. Using this option one can overrule certain style aspects. Doxygen
+# will copy the style sheet files to the output directory.
+# Note: The order of the extra style sheet files is of importance (e.g. the last
+# style sheet in the list overrules the setting of the previous ones in the
+# list).
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_EXTRA_STYLESHEET =
+
+# The LATEX_EXTRA_FILES tag can be used to specify one or more extra images or
+# other source files which should be copied to the LATEX_OUTPUT output
+# directory. Note that the files will be copied as-is; there are no commands or
+# markers available.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_EXTRA_FILES      =
+
+# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated is
+# prepared for conversion to PDF (using ps2pdf or pdflatex). The PDF file will
+# contain links (just like the HTML output) instead of page references. This
+# makes the output suitable for online browsing using a PDF viewer.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+PDF_HYPERLINKS         = NO
+
+# If the USE_PDFLATEX tag is set to YES, doxygen will use pdflatex to generate
+# the PDF file directly from the LaTeX files. Set this option to YES, to get a
+# higher quality PDF documentation.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+USE_PDFLATEX           = NO
+
+# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \batchmode
+# command to the generated LaTeX files. This will instruct LaTeX to keep running
+# if errors occur, instead of asking the user for help. This option is also used
+# when generating formulas in HTML.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_BATCHMODE        = NO
+
+# If the LATEX_HIDE_INDICES tag is set to YES then doxygen will not include the
+# index chapters (such as File Index, Compound Index, etc.) in the output.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_HIDE_INDICES     = NO
+
+# If the LATEX_SOURCE_CODE tag is set to YES then doxygen will include source
+# code with syntax highlighting in the LaTeX output.
+#
+# Note that which sources are shown also depends on other settings such as
+# SOURCE_BROWSER.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_SOURCE_CODE      = NO
+
+# The LATEX_BIB_STYLE tag can be used to specify the style to use for the
+# bibliography, e.g. plainnat, or ieeetr. See
+# http://en.wikipedia.org/wiki/BibTeX and \cite for more info.
+# The default value is: plain.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_BIB_STYLE        = plain
+
+# If the LATEX_TIMESTAMP tag is set to YES then the footer of each generated
+# page will contain the date and time when the page was generated. Setting this
+# to NO can help when comparing the output of multiple runs.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_TIMESTAMP        = NO
+
+#---------------------------------------------------------------------------
+# Configuration options related to the RTF output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_RTF tag is set to YES, doxygen will generate RTF output. The
+# RTF output is optimized for Word 97 and may not look too pretty with other RTF
+# readers/editors.
+# The default value is: NO.
+
+GENERATE_RTF           = NO
+
+# The RTF_OUTPUT tag is used to specify where the RTF docs will be put. If a
+# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
+# it.
+# The default directory is: rtf.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+RTF_OUTPUT             = rtf
+
+# If the COMPACT_RTF tag is set to YES, doxygen generates more compact RTF
+# documents. This may be useful for small projects and may help to save some
+# trees in general.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+COMPACT_RTF            = NO
+
+# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated will
+# contain hyperlink fields. The RTF file will contain links (just like the HTML
+# output) instead of page references. This makes the output suitable for online
+# browsing using Word or some other Word compatible readers that support those
+# fields.
+#
+# Note: WordPad (write) and others do not support links.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+RTF_HYPERLINKS         = NO
+
+# Load stylesheet definitions from file. Syntax is similar to doxygen's config
+# file, i.e. a series of assignments. You only have to provide replacements,
+# missing definitions are set to their default value.
+#
+# See also section "Doxygen usage" for information on how to generate the
+# default style sheet that doxygen normally uses.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+RTF_STYLESHEET_FILE    =
+
+# Set optional variables used in the generation of an RTF document. Syntax is
+# similar to doxygen's config file. A template extensions file can be generated
+# using doxygen -e rtf extensionFile.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+RTF_EXTENSIONS_FILE    =
+
+# If the RTF_SOURCE_CODE tag is set to YES then doxygen will include source code
+# with syntax highlighting in the RTF output.
+#
+# Note that which sources are shown also depends on other settings such as
+# SOURCE_BROWSER.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+RTF_SOURCE_CODE        = NO
+
+#---------------------------------------------------------------------------
+# Configuration options related to the man page output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_MAN tag is set to YES, doxygen will generate man pages for
+# classes and files.
+# The default value is: NO.
+
+GENERATE_MAN           = NO
+
+# The MAN_OUTPUT tag is used to specify where the man pages will be put. If a
+# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
+# it. A directory man3 will be created inside the directory specified by
+# MAN_OUTPUT.
+# The default directory is: man.
+# This tag requires that the tag GENERATE_MAN is set to YES.
+
+MAN_OUTPUT             = man
+
+# The MAN_EXTENSION tag determines the extension that is added to the generated
+# man pages. In case the manual section does not start with a number, the number
+# 3 is prepended. The dot (.) at the beginning of the MAN_EXTENSION tag is
+# optional.
+# The default value is: .3.
+# This tag requires that the tag GENERATE_MAN is set to YES.
+
+MAN_EXTENSION          = .3
+
+# The MAN_SUBDIR tag determines the name of the directory created within
+# MAN_OUTPUT in which the man pages are placed. If defaults to man followed by
+# MAN_EXTENSION with the initial . removed.
+# This tag requires that the tag GENERATE_MAN is set to YES.
+
+MAN_SUBDIR             =
+
+# If the MAN_LINKS tag is set to YES and doxygen generates man output, then it
+# will generate one additional man file for each entity documented in the real
+# man page(s). These additional files only source the real man page, but without
+# them the man command would be unable to find the correct page.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_MAN is set to YES.
+
+MAN_LINKS              = NO
+
+#---------------------------------------------------------------------------
+# Configuration options related to the XML output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_XML tag is set to YES, doxygen will generate an XML file that
+# captures the structure of the code including all documentation.
+# The default value is: NO.
+
+GENERATE_XML           = NO
+
+# The XML_OUTPUT tag is used to specify where the XML pages will be put. If a
+# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
+# it.
+# The default directory is: xml.
+# This tag requires that the tag GENERATE_XML is set to YES.
+
+XML_OUTPUT             = xml
+
+# If the XML_PROGRAMLISTING tag is set to YES, doxygen will dump the program
+# listings (including syntax highlighting and cross-referencing information) to
+# the XML output. Note that enabling this will significantly increase the size
+# of the XML output.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_XML is set to YES.
+
+XML_PROGRAMLISTING     = YES
+
+#---------------------------------------------------------------------------
+# Configuration options related to the DOCBOOK output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_DOCBOOK tag is set to YES, doxygen will generate Docbook files
+# that can be used to generate PDF.
+# The default value is: NO.
+
+GENERATE_DOCBOOK       = NO
+
+# The DOCBOOK_OUTPUT tag is used to specify where the Docbook pages will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be put in
+# front of it.
+# The default directory is: docbook.
+# This tag requires that the tag GENERATE_DOCBOOK is set to YES.
+
+DOCBOOK_OUTPUT         = docbook
+
+# If the DOCBOOK_PROGRAMLISTING tag is set to YES, doxygen will include the
+# program listings (including syntax highlighting and cross-referencing
+# information) to the DOCBOOK output. Note that enabling this will significantly
+# increase the size of the DOCBOOK output.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_DOCBOOK is set to YES.
+
+DOCBOOK_PROGRAMLISTING = NO
+
+#---------------------------------------------------------------------------
+# Configuration options for the AutoGen Definitions output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_AUTOGEN_DEF tag is set to YES, doxygen will generate an
+# AutoGen Definitions (see http://autogen.sf.net) file that captures the
+# structure of the code including all documentation. Note that this feature is
+# still experimental and incomplete at the moment.
+# The default value is: NO.
+
+GENERATE_AUTOGEN_DEF   = NO
+
+#---------------------------------------------------------------------------
+# Configuration options related to the Perl module output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_PERLMOD tag is set to YES, doxygen will generate a Perl module
+# file that captures the structure of the code including all documentation.
+#
+# Note that this feature is still experimental and incomplete at the moment.
+# The default value is: NO.
+
+GENERATE_PERLMOD       = NO
+
+# If the PERLMOD_LATEX tag is set to YES, doxygen will generate the necessary
+# Makefile rules, Perl scripts and LaTeX code to be able to generate PDF and DVI
+# output from the Perl module output.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_PERLMOD is set to YES.
+
+PERLMOD_LATEX          = NO
+
+# If the PERLMOD_PRETTY tag is set to YES, the Perl module output will be nicely
+# formatted so it can be parsed by a human reader. This is useful if you want to
+# understand what is going on. On the other hand, if this tag is set to NO, the
+# size of the Perl module output will be much smaller and Perl will parse it
+# just the same.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_PERLMOD is set to YES.
+
+PERLMOD_PRETTY         = YES
+
+# The names of the make variables in the generated doxyrules.make file are
+# prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX. This is useful
+# so different doxyrules.make files included by the same Makefile don't
+# overwrite each other's variables.
+# This tag requires that the tag GENERATE_PERLMOD is set to YES.
+
+PERLMOD_MAKEVAR_PREFIX =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the preprocessor
+#---------------------------------------------------------------------------
+
+# If the ENABLE_PREPROCESSING tag is set to YES, doxygen will evaluate all
+# C-preprocessor directives found in the sources and include files.
+# The default value is: YES.
+
+ENABLE_PREPROCESSING   = YES
+
+# If the MACRO_EXPANSION tag is set to YES, doxygen will expand all macro names
+# in the source code. If set to NO, only conditional compilation will be
+# performed. Macro expansion can be done in a controlled way by setting
+# EXPAND_ONLY_PREDEF to YES.
+# The default value is: NO.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+MACRO_EXPANSION        = YES
+
+# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES then
+# the macro expansion is limited to the macros specified with the PREDEFINED and
+# EXPAND_AS_DEFINED tags.
+# The default value is: NO.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+EXPAND_ONLY_PREDEF     = NO
+
+# If the SEARCH_INCLUDES tag is set to YES, the include files in the
+# INCLUDE_PATH will be searched if a #include is found.
+# The default value is: YES.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+SEARCH_INCLUDES        = YES
+
+# The INCLUDE_PATH tag can be used to specify one or more directories that
+# contain include files that are not input files but should be processed by the
+# preprocessor.
+# This tag requires that the tag SEARCH_INCLUDES is set to YES.
+
+INCLUDE_PATH           = ../../src/include
+
+# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard
+# patterns (like *.h and *.hpp) to filter out the header-files in the
+# directories. If left blank, the patterns specified with FILE_PATTERNS will be
+# used.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+INCLUDE_FILE_PATTERNS  = *.h
+
+# The PREDEFINED tag can be used to specify one or more macro names that are
+# defined before the preprocessor is started (similar to the -D option of e.g.
+# gcc). The argument of the tag is a list of macros of the form: name or
+# name=definition (no spaces). If the definition and the "=" are omitted, "=1"
+# is assumed. To prevent a macro definition from being undefined via #undef or
+# recursively expanded use the := operator instead of the = operator.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+PREDEFINED             = __DOXYGEN__=1 \
+                         NO_SYS=0 \
+                         SYS_LIGHTWEIGHT_PROT=1 \
+                         LWIP_TCPIP_CORE_LOCKING=1 \
+                         LWIP_IPV4=1 \
+                         LWIP_IPV6=1 \
+                         LWIP_ICMP=1 \
+                         LWIP_RAW=1 \
+                         LWIP_DHCP=1 \
+                         LWIP_IPV6_DHCP6=1 \
+                         LWIP_UDPLITE=1 \
+                         LWIP_UDP=1 \
+                         LWIP_IGMP=1 \
+                         LWIP_TCP=1 \
+                         LWIP_ALTCP=1 \
+                         LWIP_ALTCP_TLS=1 \
+                         LWIP_IPV6_SCOPES=1 \
+                         TCP_LISTEN_BACKLOG=1 \
+                         LWIP_SNMP=1 \
+                         SNMP_USE_NETCONN=1 \
+                         SNMP_USE_RAW=1 \
+                         MIB2_STATS=1 \
+                         LWIP_MDNS_RESPONDER=1 \
+                         HTTPD_ENABLE_HTTPS=1 \
+                         LWIP_HTTPD_CGI=1 \
+                         LWIP_HTTPD_SSI=1 \
+                         LWIP_HTTPD_SSI_RAW=1 \
+                         LWIP_HTTPD_SUPPORT_POST=1 \
+                         LWIP_HTTPD_POST_MANUAL_WND=1 \
+                         MEMP_OVERFLOW_CHECK=0 \
+                         MEMP_SANITY_CHECK=1 \
+                         LWIP_ARP=1 \
+                         LWIP_HAVE_LOOPIF=1 \
+                         LWIP_NETIF_HOSTNAME=1 \
+                         LWIP_NETIF_API=1 \
+                         LWIP_NETIF_CALLBACK=1 \
+                         LWIP_NETIF_STATUS_CALLBACK=1 \
+                         LWIP_NETIF_REMOVE_CALLBACK=1 \
+                         LWIP_NETIF_LINK_CALLBACK=1 \
+                         LWIP_NETIF_EXT_STATUS_CALLBACK=1 \
+                         LWIP_NUM_NETIF_CLIENT_DATA=1 \
+                         ENABLE_LOOPBACK=1 \
+                         LWIP_AUTOIP=1 \
+                         ARP_QUEUEING=1 \
+                         LWIP_STATS=1 \
+                         MEM_USE_POOLS=0 \
+                         LWIP_DNS=1 \
+                         LWIP_SOCKET=1 \
+                         LWIP_NETCONN=1 \
+                         IP_SOF_BROADCAST=1 \
+                         IP_SOF_BROADCAST_RECV=1 \
+                         LWIP_NETIF_API=1 \
+                         LWIP_SO_SNDTIMEO=1 \
+                         LWIP_SO_RCVBUF=1 \
+                         LWIP_SO_LINGER=1 \
+                         SO_REUSE=1 \
+                         SO_REUSE_RXTOALL=1 \
+                         LWIP_HAVE_SLIPIF=1 \
+                         SLIP_RX_FROM_ISR=1 \
+                         LWIP_TCP_PCB_NUM_EXT_ARGS=1
+
+# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
+# tag can be used to specify a list of macro names that should be expanded. The
+# macro definition that is found in the sources will be used. Use the PREDEFINED
+# tag if you want to use a different macro definition that overrules the
+# definition found in the source code.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+EXPAND_AS_DEFINED      =
+
+# If the SKIP_FUNCTION_MACROS tag is set to YES then doxygen's preprocessor will
+# remove all references to function-like macros that are alone on a line, have
+# an all uppercase name, and do not end with a semicolon. Such function macros
+# are typically used for boiler-plate code, and will confuse the parser if not
+# removed.
+# The default value is: YES.
+# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
+
+SKIP_FUNCTION_MACROS   = NO
+
+#---------------------------------------------------------------------------
+# Configuration options related to external references
+#---------------------------------------------------------------------------
+
+# The TAGFILES tag can be used to specify one or more tag files. For each tag
+# file the location of the external documentation should be added. The format of
+# a tag file without this location is as follows:
+# TAGFILES = file1 file2 ...
+# Adding location for the tag files is done as follows:
+# TAGFILES = file1=loc1 "file2 = loc2" ...
+# where loc1 and loc2 can be relative or absolute paths or URLs. See the
+# section "Linking to external documentation" for more information about the use
+# of tag files.
+# Note: Each tag file must have a unique name (where the name does NOT include
+# the path). If a tag file is not located in the directory in which doxygen is
+# run, you must also specify the path to the tagfile here.
+
+TAGFILES               =
+
+# When a file name is specified after GENERATE_TAGFILE, doxygen will create a
+# tag file that is based on the input files it reads. See section "Linking to
+# external documentation" for more information about the usage of tag files.
+
+GENERATE_TAGFILE       =
+
+# If the ALLEXTERNALS tag is set to YES, all external class will be listed in
+# the class index. If set to NO, only the inherited external classes will be
+# listed.
+# The default value is: NO.
+
+ALLEXTERNALS           = NO
+
+# If the EXTERNAL_GROUPS tag is set to YES, all external groups will be listed
+# in the modules index. If set to NO, only the current project's groups will be
+# listed.
+# The default value is: YES.
+
+EXTERNAL_GROUPS        = YES
+
+# If the EXTERNAL_PAGES tag is set to YES, all external pages will be listed in
+# the related pages index. If set to NO, only the current project's pages will
+# be listed.
+# The default value is: YES.
+
+EXTERNAL_PAGES         = YES
+
+# The PERL_PATH should be the absolute path and name of the perl script
+# interpreter (i.e. the result of 'which perl').
+# The default file (with absolute path) is: /usr/bin/perl.
+
+PERL_PATH              = /usr/bin/perl
+
+#---------------------------------------------------------------------------
+# Configuration options related to the dot tool
+#---------------------------------------------------------------------------
+
+# If the CLASS_DIAGRAMS tag is set to YES, doxygen will generate a class diagram
+# (in HTML and LaTeX) for classes with base or super classes. Setting the tag to
+# NO turns the diagrams off. Note that this option also works with HAVE_DOT
+# disabled, but it is recommended to install and use dot, since it yields more
+# powerful graphs.
+# The default value is: YES.
+
+CLASS_DIAGRAMS         = YES
+
+# You can define message sequence charts within doxygen comments using the \msc
+# command. Doxygen will then run the mscgen tool (see:
+# http://www.mcternan.me.uk/mscgen/)) to produce the chart and insert it in the
+# documentation. The MSCGEN_PATH tag allows you to specify the directory where
+# the mscgen tool resides. If left empty the tool is assumed to be found in the
+# default search path.
+
+MSCGEN_PATH            =
+
+# You can include diagrams made with dia in doxygen documentation. Doxygen will
+# then run dia to produce the diagram and insert it in the documentation. The
+# DIA_PATH tag allows you to specify the directory where the dia binary resides.
+# If left empty dia is assumed to be found in the default search path.
+
+DIA_PATH               =
+
+# If set to YES the inheritance and collaboration graphs will hide inheritance
+# and usage relations if the target is undocumented or is not a class.
+# The default value is: YES.
+
+HIDE_UNDOC_RELATIONS   = YES
+
+# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is
+# available from the path. This tool is part of Graphviz (see:
+# http://www.graphviz.org/), a graph visualization toolkit from AT&T and Lucent
+# Bell Labs. The other options in this section have no effect if this option is
+# set to NO
+# The default value is: NO.
+
+HAVE_DOT               = NO
+
+# The DOT_NUM_THREADS specifies the number of dot invocations doxygen is allowed
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diff --git a/components/net/lwip/lwip-2.1.2/doc/doxygen/main_page.h b/components/net/lwip/lwip-2.1.2/doc/doxygen/main_page.h
new file mode 100644
index 0000000000..89d86f82e9
--- /dev/null
+++ b/components/net/lwip/lwip-2.1.2/doc/doxygen/main_page.h
@@ -0,0 +1,403 @@
+/**
+ * @defgroup lwip lwIP
+ *
+ * @defgroup infrastructure Infrastructure
+ * 
+ * @defgroup api APIs
+ * lwIP provides three Application Program's Interfaces (APIs) for programs
+ * to use for communication with the TCP/IP code:
+ * - low-level "core" / "callback" or @ref callbackstyle_api.
+ * - higher-level @ref sequential_api.
+ * - BSD-style @ref socket.
+ * 
+ * The raw TCP/IP interface allows the application program to integrate
+ * better with the TCP/IP code. Program execution is event based by
+ * having callback functions being called from within the TCP/IP
+ * code. The TCP/IP code and the application program both run in the same
+ * thread. The sequential API has a much higher overhead and is not very
+ * well suited for small systems since it forces a multithreaded paradigm
+ * on the application.
+ * 
+ * The raw TCP/IP interface is not only faster in terms of code execution
+ * time but is also less memory intensive. The drawback is that program
+ * development is somewhat harder and application programs written for
+ * the raw TCP/IP interface are more difficult to understand. Still, this
+ * is the preferred way of writing applications that should be small in
+ * code size and memory usage.
+ * 
+ * All APIs can be used simultaneously by different application
+ * programs. In fact, the sequential API is implemented as an application
+ * program using the raw TCP/IP interface.
+ * 
+ * Do not confuse the lwIP raw API with raw Ethernet or IP sockets.
+ * The former is a way of interfacing the lwIP network stack (including
+ * TCP and UDP), the latter refers to processing raw Ethernet or IP data
+ * instead of TCP connections or UDP packets.
+ * 
+ * Raw API applications may never block since all packet processing
+ * (input and output) as well as timer processing (TCP mainly) is done
+ * in a single execution context.
+ *
+ * @defgroup callbackstyle_api "raw" APIs
+ * @ingroup api
+ * Non thread-safe APIs, callback style for maximum performance and minimum
+ * memory footprint.
+ * Program execution is driven by callbacks functions, which are then
+ * invoked by the lwIP core when activity related to that application
+ * occurs. A particular application may register to be notified via a
+ * callback function for events such as incoming data available, outgoing
+ * data sent, error notifications, poll timer expiration, connection
+ * closed, etc. An application can provide a callback function to perform
+ * processing for any or all of these events. Each callback is an ordinary
+ * C function that is called from within the TCP/IP code. Every callback
+ * function is passed the current TCP or UDP connection state as an
+ * argument. Also, in order to be able to keep program specific state,
+ * the callback functions are called with a program specified argument
+ * that is independent of the TCP/IP state.
+ * The raw API (sometimes called native API) is an event-driven API designed
+ * to be used without an operating system that implements zero-copy send and
+ * receive. This API is also used by the core stack for interaction between
+ * the various protocols. It is the only API available when running lwIP
+ * without an operating system.
+ * 
+ * @defgroup sequential_api Sequential-style APIs
+ * @ingroup api
+ * Sequential-style APIs, blocking functions. More overhead, but can be called
+ * from any thread except TCPIP thread.
+ * The sequential API provides a way for ordinary, sequential, programs
+ * to use the lwIP stack. It is quite similar to the BSD socket API. The
+ * model of execution is based on the blocking open-read-write-close
+ * paradigm. Since the TCP/IP stack is event based by nature, the TCP/IP
+ * code and the application program must reside in different execution
+ * contexts (threads).
+ * 
+ * @defgroup socket Socket API
+ * @ingroup api
+ * BSD-style socket API.\n
+ * Thread-safe, to be called from non-TCPIP threads only.\n
+ * Can be activated by defining @ref LWIP_SOCKET to 1.\n
+ * Header is in posix/sys/socket.h\n
+ * The socket API is a compatibility API for existing applications,
+ * currently it is built on top of the sequential API. It is meant to
+ * provide all functions needed to run socket API applications running
+ * on other platforms (e.g. unix / windows etc.). However, due to limitations
+ * in the specification of this API, there might be incompatibilities
+ * that require small modifications of existing programs.
+ * 
+ * @defgroup netifs NETIFs
+ * 
+ * @defgroup apps Applications
+ */
+
+/**
+ * @mainpage Overview
+ * @verbinclude "README"
+ */
+
+/**
+ * @page upgrading Upgrading
+ * @verbinclude "UPGRADING"
+ */
+
+/**
+ * @page changelog Changelog
+ *
+ * 2.1.0
+ * -----
+ * * Support TLS via new @ref altcp_api connection API (https, smtps, mqtt over TLS)
+ * * Switch to cmake as the main build system (Makefile file lists are still
+ *   maintained for now)
+ * * Improve IPv6 support: support address scopes, support stateless DHCPv6, bugfixes
+ * * Add debug helper asserts to ensure threading/locking requirements are met
+ * * Add sys_mbox_trypost_fromisr() and tcpip_callbackmsg_trycallback_fromisr()
+ *   (for FreeRTOS, mainly)
+ * * socket API: support poll(), sendmsg() and recvmsg(); fix problems on close
+ * 
+ * Detailed Changelog
+ * ------------------
+ * @verbinclude "CHANGELOG"
+ */
+
+/**
+ * @page contrib How to contribute to lwIP
+ * @verbinclude "contrib.txt"
+ */
+
+/**
+ * @page pitfalls Common pitfalls
+ *
+ * Multiple Execution Contexts in lwIP code
+ * ========================================
+ *
+ * The most common source of lwIP problems is to have multiple execution contexts
+ * inside the lwIP code.
+ * 
+ * lwIP can be used in two basic modes: @ref lwip_nosys (no OS/RTOS 
+ * running on target system) or @ref lwip_os (there is an OS running
+ * on the target system).
+ * 
+ * See also: @ref multithreading (especially the part about @ref LWIP_ASSERT_CORE_LOCKED()!)
+ *
+ * Mainloop Mode
+ * -------------
+ * In mainloop mode, only @ref callbackstyle_api can be used.
+ * The user has two possibilities to ensure there is only one 
+ * exection context at a time in lwIP:
+ *
+ * 1) Deliver RX ethernet packets directly in interrupt context to lwIP
+ *    by calling netif->input directly in interrupt. This implies all lwIP 
+ *    callback functions are called in IRQ context, which may cause further
+ *    problems in application code: IRQ is blocked for a long time, multiple
+ *    execution contexts in application code etc. When the application wants
+ *    to call lwIP, it only needs to disable interrupts during the call.
+ *    If timers are involved, even more locking code is needed to lock out
+ *    timer IRQ and ethernet IRQ from each other, assuming these may be nested.
+ *
+ * 2) Run lwIP in a mainloop. There is example code here: @ref lwip_nosys.
+ *    lwIP is _ONLY_ called from mainloop callstacks here. The ethernet IRQ
+ *    has to put received telegrams into a queue which is polled in the
+ *    mainloop. Ensure lwIP is _NEVER_ called from an interrupt, e.g.
+ *    some SPI IRQ wants to forward data to udp_send() or tcp_write()!
+ *
+ * OS Mode
+ * -------
+ * In OS mode, @ref callbackstyle_api AND @ref sequential_api can be used.
+ * @ref sequential_api are designed to be called from threads other than
+ * the TCPIP thread, so there is nothing to consider here.
+ * But @ref callbackstyle_api functions must _ONLY_ be called from
+ * TCPIP thread. It is a common error to call these from other threads
+ * or from IRQ contexts. ​Ethernet RX needs to deliver incoming packets
+ * in the correct way by sending a message to TCPIP thread, this is
+ * implemented in tcpip_input().​​
+ * Again, ensure lwIP is _NEVER_ called from an interrupt, e.g.
+ * some SPI IRQ wants to forward data to udp_send() or tcp_write()!
+ * 
+ * 1) tcpip_callback() can be used get called back from TCPIP thread,
+ *    it is safe to call any @ref callbackstyle_api from there.
+ *
+ * 2) Use @ref LWIP_TCPIP_CORE_LOCKING. All @ref callbackstyle_api
+ *    functions can be called when lwIP core lock is aquired, see
+ *    @ref LOCK_TCPIP_CORE() and @ref UNLOCK_TCPIP_CORE().
+ *    These macros cannot be used in an interrupt context!
+ *    Note the OS must correctly handle priority inversion for this.
+ *
+ * Cache / DMA issues
+ * ==================
+ *
+ * DMA-capable ethernet hardware and zero-copy RX
+ * ----------------------------------------------
+ * 
+ * lwIP changes the content of RECEIVED pbufs in the TCP code path.
+ * This implies one or more cacheline(s) of the RX pbuf become dirty
+ * and need to be flushed before the memory is handed over to the
+ * DMA ethernet hardware for the next telegram to be received.
+ * See http://lists.nongnu.org/archive/html/lwip-devel/2017-12/msg00070.html
+ * for a more detailed explanation.
+ * Also keep in mind the user application may also write into pbufs,
+ * so it is generally a bug not to flush the data cache before handing
+ * a buffer to DMA hardware.
+ *
+ * DMA-capable ethernet hardware and cacheline alignment
+ * -----------------------------------------------------
+ * Nice description about DMA capable hardware and buffer handling:
+ * http://www.pebblebay.com/a-guide-to-using-direct-memory-access-in-embedded-systems-part-two/
+ * Read especially sections "Cache coherency" and "Buffer alignment".
+ */
+
+/**
+ * @page bugs Reporting bugs
+ * Please report bugs in the lwIP bug tracker at savannah.\n
+ * BEFORE submitting, please check if the bug has already been reported!\n
+ * https://savannah.nongnu.org/bugs/?group=lwip
+ */
+
+/**
+ * @page zerocopyrx Zero-copy RX
+ * The following code is an example for zero-copy RX ethernet driver:
+ * @include ZeroCopyRx.c
+ */
+
+/**
+ * @defgroup lwip_nosys Mainloop mode ("NO_SYS")
+ * @ingroup lwip
+ * Use this mode if you do not run an OS on your system. \#define NO_SYS to 1.
+ * Feed incoming packets to netif->input(pbuf, netif) function from mainloop,
+ * *not* *from* *interrupt* *context*. You can allocate a @ref pbuf in interrupt
+ * context and put them into a queue which is processed from mainloop.\n
+ * Call sys_check_timeouts() periodically in the mainloop.\n
+ * Porting: implement all functions in @ref sys_time, @ref sys_prot and 
+ * @ref compiler_abstraction.\n
+ * You can only use @ref callbackstyle_api in this mode.\n
+ * Sample code:\n
+ * @include NO_SYS_SampleCode.c
+ */
+
+/**
+ * @defgroup lwip_os OS mode (TCPIP thread)
+ * @ingroup lwip
+ * Use this mode if you run an OS on your system. It is recommended to
+ * use an RTOS that correctly handles priority inversion and
+ * to use @ref LWIP_TCPIP_CORE_LOCKING.\n
+ * Porting: implement all functions in @ref sys_layer.\n
+ * You can use @ref callbackstyle_api together with @ref tcpip_callback,
+ * and all @ref sequential_api.
+ */
+
+/**
+ * @page sys_init System initalization
+A truly complete and generic sequence for initializing the lwIP stack
+cannot be given because it depends on additional initializations for
+your runtime environment (e.g. timers).
+
+We can give you some idea on how to proceed when using the raw API.
+We assume a configuration using a single Ethernet netif and the
+UDP and TCP transport layers, IPv4 and the DHCP client.
+
+Call these functions in the order of appearance:
+
+- lwip_init(): Initialize the lwIP stack and all of its subsystems.
+
+- netif_add(struct netif *netif, ...):
+  Adds your network interface to the netif_list. Allocate a struct
+  netif and pass a pointer to this structure as the first argument.
+  Give pointers to cleared ip_addr structures when using DHCP,
+  or fill them with sane numbers otherwise. The state pointer may be NULL.
+
+  The init function pointer must point to a initialization function for
+  your Ethernet netif interface. The following code illustrates its use.
+  
+@code{.c}
+  err_t netif_if_init(struct netif *netif)
+  {
+    u8_t i;
+    
+    for (i = 0; i < ETHARP_HWADDR_LEN; i++) {
+      netif->hwaddr[i] = some_eth_addr[i];
+    }
+    init_my_eth_device();
+    return ERR_OK;
+  }
+@endcode
+  
+  For Ethernet drivers, the input function pointer must point to the lwIP
+  function ethernet_input() declared in "netif/etharp.h". Other drivers
+  must use ip_input() declared in "lwip/ip.h".
+  
+- netif_set_default(struct netif *netif)
+  Registers the default network interface.
+
+- netif_set_link_up(struct netif *netif)
+  This is the hardware link state; e.g. whether cable is plugged for wired
+  Ethernet interface. This function must be called even if you don't know
+  the current state. Having link up and link down events is optional but
+  DHCP and IPv6 discover benefit well from those events.
+
+- netif_set_up(struct netif *netif)
+  This is the administrative (= software) state of the netif, when the
+  netif is fully configured this function must be called.
+
+- dhcp_start(struct netif *netif)
+  Creates a new DHCP client for this interface on the first call.
+  You can peek in the netif->dhcp struct for the actual DHCP status.
+
+- sys_check_timeouts()
+  When the system is running, you have to periodically call
+  sys_check_timeouts() which will handle all timers for all protocols in
+  the stack; add this to your main loop or equivalent.
+ */
+
+/**
+ * @page multithreading Multithreading
+ * lwIP started targeting single-threaded environments. When adding multi-
+ * threading support, instead of making the core thread-safe, another
+ * approach was chosen: there is one main thread running the lwIP core
+ * (also known as the "tcpip_thread"). When running in a multithreaded
+ * environment, raw API functions MUST only be called from the core thread
+ * since raw API functions are not protected from concurrent access (aside
+ * from pbuf- and memory management functions). Application threads using
+ * the sequential- or socket API communicate with this main thread through
+ * message passing.
+ * 
+ * As such, the list of functions that may be called from
+ * other threads or an ISR is very limited! Only functions
+ * from these API header files are thread-safe:
+ * - api.h
+ * - netbuf.h
+ * - netdb.h
+ * - netifapi.h
+ * - pppapi.h
+ * - sockets.h
+ * - sys.h
+ * 
+ * Additionaly, memory (de-)allocation functions may be
+ * called from multiple threads (not ISR!) with NO_SYS=0
+ * since they are protected by @ref SYS_LIGHTWEIGHT_PROT and/or
+ * semaphores.
+ * 
+ * Netconn or Socket API functions are thread safe against the
+ * core thread but they are not reentrant at the control block
+ * granularity level. That is, a UDP or TCP control block must
+ * not be shared among multiple threads without proper locking.
+ * 
+ * If @ref SYS_LIGHTWEIGHT_PROT is set to 1 and
+ * @ref LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT is set to 1,
+ * pbuf_free() may also be called from another thread or
+ * an ISR (since only then, mem_free - for PBUF_RAM - may
+ * be called from an ISR: otherwise, the HEAP is only
+ * protected by semaphores).
+ * 
+ * How to get threading done right
+ * -------------------------------
+ * 
+ * It is strongly recommended to implement the LWIP_ASSERT_CORE_LOCKED()
+ * macro in an application that uses multithreading. lwIP code has
+ * several places where a check for a correct thread context is
+ * implemented which greatly helps the user to get threading done right.
+ * See the example sys_arch.c files in unix and Win32 port 
+ * in the contrib repository.
+ * 
+ * In short: Copy the functions sys_mark_tcpip_thread() and 
+ * sys_check_core_locking() to your port and modify them to work with your OS.
+ * Then let @ref LWIP_ASSERT_CORE_LOCKED() and @ref LWIP_MARK_TCPIP_THREAD()
+ * point to these functions.
+ * 
+ * If you use @ref LWIP_TCPIP_CORE_LOCKING, you also need to copy and adapt
+ * the functions sys_lock_tcpip_core() and sys_unlock_tcpip_core().
+ * Let @ref LOCK_TCPIP_CORE() and @ref UNLOCK_TCPIP_CORE() point 
+ * to these functions. 
+ */
+
+/**
+ * @page optimization Optimization hints
+The first thing you want to optimize is the lwip_standard_checksum()
+routine from src/core/inet.c. You can override this standard
+function with the \#define LWIP_CHKSUM your_checksum_routine().
+
+There are C examples given in inet.c or you might want to
+craft an assembly function for this. RFC1071 is a good
+introduction to this subject.
+
+Other significant improvements can be made by supplying
+assembly or inline replacements for htons() and htonl()
+if you're using a little-endian architecture.
+\#define lwip_htons(x) your_htons()
+\#define lwip_htonl(x) your_htonl()
+If you \#define them to htons() and htonl(), you should
+\#define LWIP_DONT_PROVIDE_BYTEORDER_FUNCTIONS to prevent lwIP from
+defining htonx / ntohx compatibility macros.
+
+Check your network interface driver if it reads at
+a higher speed than the maximum wire-speed. If the
+hardware isn't serviced frequently and fast enough
+buffer overflows are likely to occur.
+
+E.g. when using the cs8900 driver, call cs8900if_service(ethif)
+as frequently as possible. When using an RTOS let the cs8900 interrupt
+wake a high priority task that services your driver using a binary
+semaphore or event flag. Some drivers might allow additional tuning
+to match your application and network.
+
+For a production release it is recommended to set LWIP_STATS to 0.
+Note that speed performance isn't influenced much by simply setting
+high values to the memory options.
+ */
diff --git a/components/net/lwip/lwip-2.1.2/doc/doxygen/output/index.html b/components/net/lwip/lwip-2.1.2/doc/doxygen/output/index.html
new file mode 100644
index 0000000000..a52e09fcf2
--- /dev/null
+++ b/components/net/lwip/lwip-2.1.2/doc/doxygen/output/index.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+  <title>Redirection</title>
+  <meta http-equiv="refresh" content="0; url=html/index.html" />
+</head>
+<body>
+  <a href="html/index.html">index.html</a>
+</body>
+</html>
diff --git a/components/net/lwip/lwip-2.1.2/doc/mdns.txt b/components/net/lwip/lwip-2.1.2/doc/mdns.txt
new file mode 100644
index 0000000000..0c28970da6
--- /dev/null
+++ b/components/net/lwip/lwip-2.1.2/doc/mdns.txt
@@ -0,0 +1,112 @@
+Multicast DNS for lwIP
+
+Author: Erik Ekman
+
+
+Note! The MDNS responder does not have all features required by the standards.
+See notes in src/apps/mdns/mdns.c for what is left. It is however usable in normal
+cases - but watch out if many devices on the same network try to use the same
+host/service instance names.
+
+
+How to enable:
+==============
+
+MDNS support does not depend on DNS.
+MDNS supports using IPv4 only, v6 only, or v4+v6.
+
+To enable MDNS responder, set
+  LWIP_MDNS_RESPONDER = 1
+in lwipopts.h and add src/apps/mdns/mdns.c to your list of files to build.
+
+The max number of services supported per netif is defined by MDNS_MAX_SERVICES,
+default is 1.
+
+Increase MEMP_NUM_UDP_PCB by 1. MDNS needs one PCB.
+Increase LWIP_NUM_NETIF_CLIENT_DATA by 1 (MDNS needs one entry on netif).
+
+MDNS with IPv4 requires LWIP_IGMP = 1, and preferably LWIP_AUTOIP = 1.
+MDNS with IPv6 requires LWIP_IPV6_MLD = 1, and that a link-local address is
+generated.
+
+The MDNS code puts its structs on the stack where suitable to reduce dynamic
+memory allocation. It may use up to 1kB of stack.
+
+MDNS (like other apps) needs a strncasecmp() implementation. If you have one, define
+'lwip_strnicmp' to it. Otherwise the code will provide an implementation
+for you.
+
+
+How to use:
+===========
+
+Call mdns_resp_init() during system initialization.
+This opens UDP sockets on port 5353 for IPv4 and IPv6.
+
+
+To start responding on a netif, run
+  mdns_resp_add_netif(struct netif *netif, char *hostname, u32_t dns_ttl)
+
+The hostname will be copied. If this returns successfully, the netif will join
+the multicast groups and any MDNS/legacy DNS requests sent unicast or multicast
+to port 5353 will be handled:
+- <hostname>.local type A, AAAA or ANY returns relevant IP addresses
+- Reverse lookups (PTR in-addr.arpa, ip6.arpa) of netif addresses
+  returns <hostname>.local
+Answers will use the supplied TTL (in seconds)
+MDNS allows UTF-8 names, but it is recommended to stay within ASCII,
+since the default case-insensitive comparison assumes this.
+
+Call mdns_resp_announce() every time the IP address on the netif has changed.
+
+Call mdns_resp_restart() every time the network interface comes up after being
+down, for example cable connected after being disconnected, administrative 
+interface comes up after being down, or the device wakes up from sleep.
+
+To stop responding on a netif, run
+  mdns_resp_remove_netif(struct netif *netif)
+
+
+Adding services:
+================
+
+The netif first needs to be registered. Then run
+  mdns_resp_add_service(struct netif *netif, char *name, char *service,
+      u16_t proto, u16_t port, u32_t dns_ttl,
+      service_get_txt_fn_t txt_fn, void *txt_userdata);
+
+The name and service pointers will be copied. Name refers to the name of the
+service instance, and service is the type of service, like _http
+proto can be DNSSD_PROTO_UDP or DNSSD_PROTO_TCP which represent _udp and _tcp.
+If this call returns successfully, the following queries will be answered:
+- _services._dns-sd._udp.local type PTR returns <service>.<proto>.local
+- <service>.<proto>.local type PTR returns <name>.<service>.<proto>.local
+- <name>.<service>.<proto>.local type SRV returns hostname and port of service
+- <name>.<service>.<proto>.local type TXT builds text strings by calling txt_fn
+  with the supplied userdata. The callback adds strings to the reply by calling
+  mdns_resp_add_service_txtitem(struct mdns_service *service, char *txt,
+   int txt_len). Example callback method:
+
+   static void srv_txt(struct mdns_service *service, void *txt_userdata)
+   {
+     res = mdns_resp_add_service_txtitem(service, "path=/", 6);
+     LWIP_ERROR("mdns add service txt failed\n", (res == ERR_OK), return);
+   }
+
+  Since a hostname struct is used for TXT storage each single item can be max
+  63 bytes long, and  the total max length (including length bytes for each
+  item) is 255 bytes.
+
+If your device runs a webserver on port 80, an example call might be:
+
+  mdns_resp_add_service(netif, "myweb", "_http"
+      DNSSD_PROTO_TCP, 80, 3600, srv_txt, NULL);
+
+which will publish myweb._http._tcp.local for any hosts looking for web servers,
+and point them to <hostname>.local:80
+
+Relevant information will be sent as additional records to reduce number of
+requests required from a client.
+
+To remove a service from a netif, run
+  mdns_resp_del_service(struct netif *netif, s8_t slot)
\ No newline at end of file
diff --git a/components/net/lwip/lwip-2.1.2/doc/mqtt_client.txt b/components/net/lwip/lwip-2.1.2/doc/mqtt_client.txt
new file mode 100644
index 0000000000..7fd93a8edf
--- /dev/null
+++ b/components/net/lwip/lwip-2.1.2/doc/mqtt_client.txt
@@ -0,0 +1,162 @@
+MQTT client for lwIP
+
+Author: Erik Andersson
+
+Details of the MQTT protocol can be found at:
+http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.html 
+
+-----------------------------------------------------------------
+1. Initial steps, reserve memory and make connection to server:
+
+1.1: Provide storage
+
+Static allocation:
+  mqtt_client_t static_client;
+  example_do_connect(&static_client);
+
+Dynamic allocation:
+  mqtt_client_t *client = mqtt_client_new();
+  if(client != NULL) {
+    example_do_connect(&client);
+  }
+  
+1.2: Establish Connection with server
+
+void example_do_connect(mqtt_client_t *client)
+{
+  struct mqtt_connect_client_info_t ci;
+  err_t err;
+  
+  /* Setup an empty client info structure */
+  memset(&ci, 0, sizeof(ci));
+  
+  /* Minimal amount of information required is client identifier, so set it here */ 
+  ci.client_id = "lwip_test";
+  
+  /* Initiate client and connect to server, if this fails immediately an error code is returned
+     otherwise mqtt_connection_cb will be called with connection result after attempting 
+     to establish a connection with the server. 
+     For now MQTT version 3.1.1 is always used */
+  
+  err = mqtt_client_connect(client, ip_addr, MQTT_PORT, mqtt_connection_cb, 0, &ci);
+  
+  /* For now just print the result code if something goes wrong */
+  if(err != ERR_OK) {
+    printf("mqtt_connect return %d\n", err);
+  }
+}
+
+Connection to server can also be probed by calling mqtt_client_is_connected(client) 
+
+-----------------------------------------------------------------
+2. Implementing the connection status callback
+
+
+static void mqtt_connection_cb(mqtt_client_t *client, void *arg, mqtt_connection_status_t status)
+{
+  err_t err;
+  if(status == MQTT_CONNECT_ACCEPTED) {
+    printf("mqtt_connection_cb: Successfully connected\n");
+    
+    /* Setup callback for incoming publish requests */
+    mqtt_set_inpub_callback(client, mqtt_incoming_publish_cb, mqtt_incoming_data_cb, arg);
+    
+    /* Subscribe to a topic named "subtopic" with QoS level 1, call mqtt_sub_request_cb with result */ 
+    err = mqtt_subscribe(client, "subtopic", 1, mqtt_sub_request_cb, arg);
+
+    if(err != ERR_OK) {
+      printf("mqtt_subscribe return: %d\n", err);
+    }
+  } else {
+    printf("mqtt_connection_cb: Disconnected, reason: %d\n", status);
+    
+    /* Its more nice to be connected, so try to reconnect */
+    example_do_connect(client);
+  }  
+}
+
+static void mqtt_sub_request_cb(void *arg, err_t result)
+{
+  /* Just print the result code here for simplicity, 
+     normal behaviour would be to take some action if subscribe fails like 
+     notifying user, retry subscribe or disconnect from server */
+  printf("Subscribe result: %d\n", result);
+}
+
+-----------------------------------------------------------------
+3. Implementing callbacks for incoming publish and data
+
+/* The idea is to demultiplex topic and create some reference to be used in data callbacks
+   Example here uses a global variable, better would be to use a member in arg
+   If RAM and CPU budget allows it, the easiest implementation might be to just take a copy of
+   the topic string and use it in mqtt_incoming_data_cb
+*/
+static int inpub_id;
+static void mqtt_incoming_publish_cb(void *arg, const char *topic, u32_t tot_len)
+{
+  printf("Incoming publish at topic %s with total length %u\n", topic, (unsigned int)tot_len);
+
+  /* Decode topic string into a user defined reference */
+  if(strcmp(topic, "print_payload") == 0) {
+    inpub_id = 0;
+  } else if(topic[0] == 'A') {
+    /* All topics starting with 'A' might be handled at the same way */
+    inpub_id = 1;
+  } else {
+    /* For all other topics */
+    inpub_id = 2;
+  }
+}
+
+static void mqtt_incoming_data_cb(void *arg, const u8_t *data, u16_t len, u8_t flags)
+{
+  printf("Incoming publish payload with length %d, flags %u\n", len, (unsigned int)flags);
+
+  if(flags & MQTT_DATA_FLAG_LAST) {
+    /* Last fragment of payload received (or whole part if payload fits receive buffer
+       See MQTT_VAR_HEADER_BUFFER_LEN)  */
+
+    /* Call function or do action depending on reference, in this case inpub_id */
+    if(inpub_id == 0) {
+      /* Don't trust the publisher, check zero termination */
+      if(data[len-1] == 0) {
+        printf("mqtt_incoming_data_cb: %s\n", (const char *)data);
+      }
+    } else if(inpub_id == 1) {
+      /* Call an 'A' function... */
+    } else {
+      printf("mqtt_incoming_data_cb: Ignoring payload...\n");
+    }
+  } else {
+    /* Handle fragmented payload, store in buffer, write to file or whatever */
+  }
+}
+
+-----------------------------------------------------------------
+4. Using outgoing publish
+
+
+void example_publish(mqtt_client_t *client, void *arg)
+{
+  const char *pub_payload= "PubSubHubLubJub";
+  err_t err;
+  u8_t qos = 2; /* 0 1 or 2, see MQTT specification */
+  u8_t retain = 0; /* No don't retain such crappy payload... */
+  err = mqtt_publish(client, "pub_topic", pub_payload, strlen(pub_payload), qos, retain, mqtt_pub_request_cb, arg);
+  if(err != ERR_OK) {
+    printf("Publish err: %d\n", err);
+  }
+}
+
+/* Called when publish is complete either with sucess or failure */
+static void mqtt_pub_request_cb(void *arg, err_t result)
+{
+  if(result != ERR_OK) {
+    printf("Publish result: %d\n", result);
+  }
+}
+
+-----------------------------------------------------------------
+5. Disconnecting
+
+Simply call mqtt_disconnect(client)
diff --git a/components/net/lwip/lwip-2.1.2/doc/ppp.txt b/components/net/lwip/lwip-2.1.2/doc/ppp.txt
new file mode 100644
index 0000000000..8b88b3a671
--- /dev/null
+++ b/components/net/lwip/lwip-2.1.2/doc/ppp.txt
@@ -0,0 +1,529 @@
+PPP interface for lwIP
+
+Author: Sylvain Rochet
+
+Table of Contents:
+
+1 - Supported PPP protocols and features
+2 - Raw API PPP example for all protocols
+3 - PPPoS input path (raw API, IRQ safe API, TCPIP API)
+4 - Thread safe PPP API (PPPAPI)
+5 - Notify phase callback (PPP_NOTIFY_PHASE)
+6 - Upgrading from lwIP <= 1.4.x to lwIP >= 2.0.x
+
+
+
+1 Supported PPP protocols and features
+======================================
+
+Supported Low level protocols:
+* PPP over serial using HDLC-like framing, such as wired dialup modems
+  or mobile telecommunications GPRS/EDGE/UMTS/HSPA+/LTE modems
+* PPP over Ethernet, such as xDSL modems
+* PPP over L2TP (Layer 2 Tunneling Protocol) LAC (L2TP Access Concentrator),
+  IP tunnel over UDP, such as VPN access
+
+Supported auth protocols:
+* PAP, Password Authentication Protocol
+* CHAP, Challenge-Handshake Authentication Protocol, also known as CHAP-MD5
+* MSCHAPv1, Microsoft version of CHAP, version 1
+* MSCHAPv2, Microsoft version of CHAP, version 2
+* EAP, Extensible Authentication Protocol
+
+Supported address protocols:
+* IPCP, IP Control Protocol, IPv4 addresses negotiation
+* IP6CP, IPv6 Control Protocol, IPv6 link-local addresses negotiation
+
+Supported encryption protocols:
+* MPPE, Microsoft Point-to-Point Encryption
+
+Supported compression or miscellaneous protocols, for serial links only:
+* PFC, Protocol Field Compression
+* ACFC, Address-and-Control-Field-Compression
+* ACCM, Asynchronous-Control-Character-Map
+* VJ, Van Jacobson TCP/IP Header Compression
+
+
+
+2 Raw API PPP example for all protocols
+=======================================
+
+As usual, raw API for lwIP means the lightweight API which *MUST* only be used
+for NO_SYS=1 systems or called inside lwIP core thread for NO_SYS=0 systems.
+
+/*
+ * Globals
+ * =======
+ */
+
+/* The PPP control block */
+ppp_pcb *ppp;
+
+/* The PPP IP interface */
+struct netif ppp_netif;
+
+
+/*
+ * PPP status callback
+ * ===================
+ *
+ * PPP status callback is called on PPP status change (up, down, …) from lwIP
+ * core thread
+ */
+
+/* PPP status callback example */
+static void status_cb(ppp_pcb *pcb, int err_code, void *ctx) {
+  struct netif *pppif = ppp_netif(pcb);
+  LWIP_UNUSED_ARG(ctx);
+
+  switch(err_code) {
+    case PPPERR_NONE: {
+#if LWIP_DNS
+      const ip_addr_t *ns;
+#endif /* LWIP_DNS */
+      printf("status_cb: Connected\n");
+#if PPP_IPV4_SUPPORT
+      printf("   our_ipaddr  = %s\n", ipaddr_ntoa(&pppif->ip_addr));
+      printf("   his_ipaddr  = %s\n", ipaddr_ntoa(&pppif->gw));
+      printf("   netmask     = %s\n", ipaddr_ntoa(&pppif->netmask));
+#if LWIP_DNS
+      ns = dns_getserver(0);
+      printf("   dns1        = %s\n", ipaddr_ntoa(ns));
+      ns = dns_getserver(1);
+      printf("   dns2        = %s\n", ipaddr_ntoa(ns));
+#endif /* LWIP_DNS */
+#endif /* PPP_IPV4_SUPPORT */
+#if PPP_IPV6_SUPPORT
+      printf("   our6_ipaddr = %s\n", ip6addr_ntoa(netif_ip6_addr(pppif, 0)));
+#endif /* PPP_IPV6_SUPPORT */
+      break;
+    }
+    case PPPERR_PARAM: {
+      printf("status_cb: Invalid parameter\n");
+      break;
+    }
+    case PPPERR_OPEN: {
+      printf("status_cb: Unable to open PPP session\n");
+      break;
+    }
+    case PPPERR_DEVICE: {
+      printf("status_cb: Invalid I/O device for PPP\n");
+      break;
+    }
+    case PPPERR_ALLOC: {
+      printf("status_cb: Unable to allocate resources\n");
+      break;
+    }
+    case PPPERR_USER: {
+      printf("status_cb: User interrupt\n");
+      break;
+    }
+    case PPPERR_CONNECT: {
+      printf("status_cb: Connection lost\n");
+      break;
+    }
+    case PPPERR_AUTHFAIL: {
+      printf("status_cb: Failed authentication challenge\n");
+      break;
+    }
+    case PPPERR_PROTOCOL: {
+      printf("status_cb: Failed to meet protocol\n");
+      break;
+    }
+    case PPPERR_PEERDEAD: {
+      printf("status_cb: Connection timeout\n");
+      break;
+    }
+    case PPPERR_IDLETIMEOUT: {
+      printf("status_cb: Idle Timeout\n");
+      break;
+    }
+    case PPPERR_CONNECTTIME: {
+      printf("status_cb: Max connect time reached\n");
+      break;
+    }
+    case PPPERR_LOOPBACK: {
+      printf("status_cb: Loopback detected\n");
+      break;
+    }
+    default: {
+      printf("status_cb: Unknown error code %d\n", err_code);
+      break;
+    }
+  }
+
+/*
+ * This should be in the switch case, this is put outside of the switch
+ * case for example readability.
+ */
+
+  if (err_code == PPPERR_NONE) {
+    return;
+  }
+
+  /* ppp_close() was previously called, don't reconnect */
+  if (err_code == PPPERR_USER) {
+    /* ppp_free(); -- can be called here */
+    return;
+  }
+
+  /*
+   * Try to reconnect in 30 seconds, if you need a modem chatscript you have
+   * to do a much better signaling here ;-)
+   */
+  ppp_connect(pcb, 30);
+  /* OR ppp_listen(pcb); */
+}
+
+
+/*
+ * Creating a new PPPoS session
+ * ============================
+ *
+ * In lwIP, PPPoS is not PPPoSONET, in lwIP PPPoS is PPPoSerial.
+ */
+
+#include "netif/ppp/pppos.h"
+
+/*
+ * PPPoS serial output callback
+ *
+ * ppp_pcb, PPP control block
+ * data, buffer to write to serial port
+ * len, length of the data buffer
+ * ctx, optional user-provided callback context pointer
+ *
+ * Return value: len if write succeed
+ */
+static u32_t output_cb(ppp_pcb *pcb, u8_t *data, u32_t len, void *ctx) {
+  return uart_write(UART, data, len);
+}
+
+/*
+ * Create a new PPPoS interface
+ *
+ * ppp_netif, netif to use for this PPP link, i.e. PPP IP interface
+ * output_cb, PPPoS serial output callback
+ * status_cb, PPP status callback, called on PPP status change (up, down, …)
+ * ctx_cb, optional user-provided callback context pointer
+ */
+ppp = pppos_create(&ppp_netif,
+       output_cb, status_cb, ctx_cb);
+
+
+/*
+ * Creating a new PPPoE session
+ * ============================
+ */
+
+#include "netif/ppp/pppoe.h"
+
+/*
+ * Create a new PPPoE interface
+ *
+ * ppp_netif, netif to use for this PPP link, i.e. PPP IP interface
+ * ethif, already existing and setup Ethernet interface to use
+ * service_name, PPPoE service name discriminator (not supported yet)
+ * concentrator_name, PPPoE concentrator name discriminator (not supported yet)
+ * status_cb, PPP status callback, called on PPP status change (up, down, …)
+ * ctx_cb, optional user-provided callback context pointer
+ */
+ppp = pppoe_create(&ppp_netif,
+       &ethif,
+       service_name, concentrator_name,
+       status_cb, ctx_cb);
+
+
+/*
+ * Creating a new PPPoL2TP session
+ * ===============================
+ */
+
+#include "netif/ppp/pppol2tp.h"
+
+/*
+ * Create a new PPPoL2TP interface
+ *
+ * ppp_netif, netif to use for this PPP link, i.e. PPP IP interface
+ * netif, optional already existing and setup output netif, necessary if you
+ *        want to set this interface as default route to settle the chicken
+ *        and egg problem with VPN links
+ * ipaddr, IP to connect to
+ * port, UDP port to connect to (usually 1701)
+ * secret, L2TP secret to use
+ * secret_len, size in bytes of the L2TP secret
+ * status_cb, PPP status callback, called on PPP status change (up, down, …)
+ * ctx_cb, optional user-provided callback context pointer
+ */
+ppp = pppol2tp_create(&ppp_netif,
+       struct netif *netif, ip_addr_t *ipaddr, u16_t port,
+       u8_t *secret, u8_t secret_len,
+       ppp_link_status_cb_fn link_status_cb, void *ctx_cb);
+
+
+/*
+ * Initiate PPP client connection
+ * ==============================
+ */
+
+/* Set this interface as default route */
+ppp_set_default(ppp);
+
+/*
+ * Basic PPP client configuration. Can only be set if PPP session is in the
+ * dead state (i.e. disconnected). We don't need to provide thread-safe
+ * equivalents through PPPAPI because those helpers are only changing
+ * structure members while session is inactive for lwIP core. Configuration
+ * only need to be done once.
+ */
+
+/* Ask the peer for up to 2 DNS server addresses. */
+ppp_set_usepeerdns(ppp, 1);
+
+/* Auth configuration, this is pretty self-explanatory */
+ppp_set_auth(ppp, PPPAUTHTYPE_ANY, "login", "password");
+
+/*
+ * Initiate PPP negotiation, without waiting (holdoff=0), can only be called
+ * if PPP session is in the dead state (i.e. disconnected).
+ */
+u16_t holdoff = 0;
+ppp_connect(ppp, holdoff);
+
+
+/*
+ * Initiate PPP server listener
+ * ============================
+ */
+
+/*
+ * Basic PPP server configuration. Can only be set if PPP session is in the
+ * dead state (i.e. disconnected). We don't need to provide thread-safe
+ * equivalents through PPPAPI because those helpers are only changing
+ * structure members while session is inactive for lwIP core. Configuration
+ * only need to be done once.
+ */
+ip4_addr_t addr;
+
+/* Set our address */
+IP4_ADDR(&addr, 192,168,0,1);
+ppp_set_ipcp_ouraddr(ppp, &addr);
+
+/* Set peer(his) address */
+IP4_ADDR(&addr, 192,168,0,2);
+ppp_set_ipcp_hisaddr(ppp, &addr);
+
+/* Set primary DNS server */
+IP4_ADDR(&addr, 192,168,10,20);
+ppp_set_ipcp_dnsaddr(ppp, 0, &addr);
+
+/* Set secondary DNS server */
+IP4_ADDR(&addr, 192,168,10,21);
+ppp_set_ipcp_dnsaddr(ppp, 1, &addr);
+
+/* Auth configuration, this is pretty self-explanatory */
+ppp_set_auth(ppp, PPPAUTHTYPE_ANY, "login", "password");
+
+/* Require peer to authenticate */
+ppp_set_auth_required(ppp, 1);
+
+/*
+ * Only for PPPoS, the PPP session should be up and waiting for input.
+ *
+ * Note: for PPPoS, ppp_connect() and ppp_listen() are actually the same thing.
+ * The listen call is meant for future support of PPPoE and PPPoL2TP server
+ * mode, where we will need to negotiate the incoming PPPoE session or L2TP
+ * session before initiating PPP itself. We need this call because there is
+ * two passive modes for PPPoS, ppp_set_passive and ppp_set_silent.
+ */
+ppp_set_silent(pppos, 1);
+
+/*
+ * Initiate PPP listener (i.e. wait for an incoming connection), can only
+ * be called if PPP session is in the dead state (i.e. disconnected).
+ */
+ppp_listen(ppp);
+
+
+/*
+ * Closing PPP connection
+ * ======================
+ */
+
+/*
+ * Initiate the end of the PPP session, without carrier lost signal
+ * (nocarrier=0), meaning a clean shutdown of PPP protocols.
+ * You can call this function at anytime.
+ */
+u8_t nocarrier = 0;
+ppp_close(ppp, nocarrier);
+/*
+ * Then you must wait your status_cb() to be called, it may takes from a few
+ * seconds to several tens of seconds depending on the current PPP state.
+ */
+
+/*
+ * Freeing a PPP connection
+ * ========================
+ */
+
+/*
+ * Free the PPP control block, can only be called if PPP session is in the
+ * dead state (i.e. disconnected). You need to call ppp_close() before.
+ */
+ppp_free(ppp);
+
+
+
+3 PPPoS input path (raw API, IRQ safe API, TCPIP API)
+=====================================================
+
+Received data on serial port should be sent to lwIP using the pppos_input()
+function or the pppos_input_tcpip() function.
+
+If NO_SYS is 1 and if PPP_INPROC_IRQ_SAFE is 0 (the default), pppos_input()
+is not IRQ safe and then *MUST* only be called inside your main loop.
+
+Whatever the NO_SYS value, if PPP_INPROC_IRQ_SAFE is 1, pppos_input() is IRQ
+safe and can be safely called from an interrupt context, using that is going
+to reduce your need of buffer if pppos_input() is called byte after byte in
+your rx serial interrupt.
+
+if NO_SYS is 0, the thread safe way outside an interrupt context is to use
+the pppos_input_tcpip() function to pass input data to the lwIP core thread
+using the TCPIP API. This is thread safe in all cases but you should avoid
+passing data byte after byte because it uses heavy locking (mailbox) and it
+allocates pbuf, better fill them !
+
+if NO_SYS is 0 and if PPP_INPROC_IRQ_SAFE is 1, you may also use pppos_input()
+from an RX thread, however pppos_input() is not thread safe by itself. You can
+do that *BUT* you should NEVER call pppos_connect(), pppos_listen() and
+ppp_free() if pppos_input() can still be running, doing this is NOT thread safe
+at all. Using PPP_INPROC_IRQ_SAFE from an RX thread is discouraged unless you
+really know what you are doing, your move ;-)
+
+
+/*
+ * Fonction to call for received data
+ *
+ * ppp, PPP control block
+ * buffer, input buffer
+ * buffer_len, buffer length in bytes
+ */
+void pppos_input(ppp, buffer, buffer_len);
+
+or
+
+void pppos_input_tcpip(ppp, buffer, buffer_len);
+
+
+
+4 Thread safe PPP API (PPPAPI)
+==============================
+
+There is a thread safe API for all corresponding ppp_* functions, you have to
+enable LWIP_PPP_API in your lwipopts.h file, then see
+include/netif/ppp/pppapi.h, this is actually pretty obvious.
+
+
+
+5 Notify phase callback (PPP_NOTIFY_PHASE)
+==========================================
+
+Notify phase callback, enabled using the PPP_NOTIFY_PHASE config option, let
+you configure a callback that is called on each PPP internal state change.
+This is different from the status callback which only warns you about
+up(running) and down(dead) events.
+
+Notify phase callback can be used, for example, to set a LED pattern depending
+on the current phase of the PPP session. Here is a callback example which
+tries to mimic what we usually see on xDSL modems while they are negotiating
+the link, which should be self-explanatory:
+
+static void ppp_notify_phase_cb(ppp_pcb *pcb, u8_t phase, void *ctx) {
+  switch (phase) {
+
+  /* Session is down (either permanently or briefly) */
+  case PPP_PHASE_DEAD:
+    led_set(PPP_LED, LED_OFF);
+    break;
+
+  /* We are between two sessions */
+  case PPP_PHASE_HOLDOFF:
+    led_set(PPP_LED, LED_SLOW_BLINK);
+    break;
+
+  /* Session just started */
+  case PPP_PHASE_INITIALIZE:
+    led_set(PPP_LED, LED_FAST_BLINK);
+    break;
+
+  /* Session is running */
+  case PPP_PHASE_RUNNING:
+    led_set(PPP_LED, LED_ON);
+    break;
+
+  default:
+    break;
+  }
+}
+
+
+
+6 Upgrading from lwIP <= 1.4.x to lwIP >= 2.0.x
+===============================================
+
+PPP API was fully reworked between 1.4.x and 2.0.x releases. However porting
+from previous lwIP version is pretty easy:
+
+* Previous PPP API used an integer to identify PPP sessions, we are now
+  using ppp_pcb* control block, therefore all functions changed from "int ppp"
+  to "ppp_pcb *ppp"
+
+* struct netif was moved outside the PPP structure, you have to provide a netif
+  for PPP interface in pppoX_create() functions
+
+* PPP session are not started automatically after you created them anymore,
+  you have to call ppp_connect(), this way you can configure the session before
+  starting it.
+
+* Previous PPP API used CamelCase, we are now using snake_case.
+
+* Previous PPP API mixed PPPoS and PPPoE calls, this isn't the case anymore,
+  PPPoS functions are now prefixed pppos_ and PPPoE functions are now prefixed
+  pppoe_, common functions are now prefixed ppp_.
+
+* New PPPERR_ error codes added, check you have all of them in your status
+  callback function
+
+* Only the following include files should now be used in user application:
+  #include "netif/ppp/pppapi.h"
+  #include "netif/ppp/pppos.h"
+  #include "netif/ppp/pppoe.h"
+  #include "netif/ppp/pppol2tp.h"
+
+  Functions from ppp.h can be used, but you don't need to include this header
+  file as it is already included by above header files.
+
+* PPP_INPROC_OWNTHREAD was broken by design and was removed, you have to create
+  your own serial rx thread
+
+* PPP_INPROC_MULTITHREADED option was misnamed and confusing and was renamed
+  PPP_INPROC_IRQ_SAFE, please read the "PPPoS input path" documentation above
+  because you might have been fooled by that
+
+* If you used tcpip_callback_with_block() on ppp_ functions you may wish to use
+  the PPPAPI API instead.
+
+* ppp_sighup and ppp_close functions were merged using an optional argument
+  "nocarrier" on ppp_close.
+
+* DNS servers are now only remotely asked if LWIP_DNS is set and if
+  ppp_set_usepeerdns() is set to true, they are now automatically registered
+  using the dns_setserver() function so you don't need to do that in the PPP
+  callback anymore.
+
+* PPPoS does not use the SIO API anymore, as such it now requires a serial
+  output callback in place of sio_write
+
+* PPP_MAXIDLEFLAG is now in ms instead of jiffies
diff --git a/components/net/lwip/lwip-2.1.2/doc/savannah.txt b/components/net/lwip/lwip-2.1.2/doc/savannah.txt
new file mode 100644
index 0000000000..a98418d960
--- /dev/null
+++ b/components/net/lwip/lwip-2.1.2/doc/savannah.txt
@@ -0,0 +1,120 @@
+Daily Use Guide for using Savannah for lwIP
+
+Table of Contents:
+
+1 - Obtaining lwIP from the Git repository
+2 - Committers/developers Git access using SSH
+3 - Merging a development branch to master branch
+4 - How to release lwIP
+
+
+
+1 Obtaining lwIP from the Git repository
+----------------------------------------
+
+To perform an anonymous Git clone of the master branch (this is where
+bug fixes and incremental enhancements occur), do this:
+ git clone git://git.savannah.nongnu.org/lwip.git
+
+Or, obtain a stable branch (updated with bug fixes only) as follows:
+ git clone --branch DEVEL-1_4_1 git://git.savannah.nongnu.org/lwip.git
+
+Or, obtain a specific (fixed) release as follows:
+ git clone --branch STABLE-1_4_1 git://git.savannah.nongnu.org/lwip.git
+
+
+2 Committers/developers Git access using SSH
+--------------------------------------------
+
+The Savannah server uses SSH (Secure Shell) protocol 2 authentication and encryption.
+As such, Git commits to the server occur through a SSH tunnel for project members.
+To create a SSH2 key pair in UNIX-like environments, do this:
+ ssh-keygen
+
+Under Windows, a recommended SSH client is "PuTTY", freely available with good
+documentation and a graphic user interface. Use its key generator.
+
+Now paste the id_rsa.pub contents into your Savannah account public key list. Wait
+a while so that Savannah can update its configuration (This can take minutes).
+
+Try to login using SSH:
+ ssh -v your_login@git.sv.gnu.org
+
+If it tells you:
+ Linux vcs.savannah.gnu.org 2.6.32-5-xen-686 #1 SMP Wed Jun 17 17:10:03 UTC 2015 i686
+
+ Interactive shell login is not possible for security reasons.
+ VCS commands are allowed.
+ Last login: Tue May 15 23:10:12 2012 from 82.245.102.129
+ You tried to execute:
+ Sorry, you are not allowed to execute that command.
+ Shared connection to git.sv.gnu.org closed.
+
+then you could login; Savannah refuses to give you a shell - which is OK, as we
+are allowed to use SSH for Git only. Now, you should be able to do this:
+ git clone your_login@git.sv.gnu.org:/srv/git/lwip.git
+
+After which you can edit your local files with bug fixes or new features and
+commit them. Make sure you know what you are doing when using Git to make
+changes on the repository. If in doubt, ask on the lwip-members mailing list.
+
+(If SSH asks about authenticity of the host, you can check the key
+fingerprint against https://savannah.nongnu.org/git/?group=lwip
+
+
+3 - Merging a development branch to master branch
+-------------------------------------------------
+
+Merging is a straightforward process in Git. How to merge all changes in a
+development branch since our last merge from main:
+
+Checkout the master branch:
+ git checkout master
+
+Merge the development branch to master:
+ git merge your-development-branch
+
+Resolve any conflict.
+
+Commit the merge result.
+ git commit -a
+
+Push your commits:
+ git push
+
+
+4 How to release lwIP
+---------------------
+
+First, tag the release using Git: (I use release number 1.4.1 throughout
+this example).
+ git tag -a STABLE-1_4_1
+
+Share the tag reference by pushing it to remote:
+ git push origin STABLE-1_4_1
+
+Prepare the release:
+ cp -r lwip lwip-1.4.1
+ rm -rf lwip-1.4.1/.git lwip-1.4.1/.gitattributes
+
+Archive the current directory using tar, gzip'd, bzip2'd and zip'd.
+ tar czvf lwip-1.4.1.tar.gz lwip-1.4.1
+ tar cjvf lwip-1.4.1.tar.bz2 lwip-1.4.1
+ zip -r lwip-1.4.1.zip lwip-1.4.1
+
+Now, sign the archives with a detached GPG binary signature as follows:
+ gpg -b lwip-1.4.1.tar.gz
+ gpg -b lwip-1.4.1.tar.bz2
+ gpg -b lwip-1.4.1.zip
+
+Upload these files using anonymous FTP:
+ ncftp ftp://savannah.gnu.org/incoming/savannah/lwip
+ ncftp> mput *1.4.1.*
+
+Additionally, you may post a news item on Savannah, like this:
+
+A new 1.4.1 release is now available here:
+http://savannah.nongnu.org/files/?group=lwip&highlight=1.4.1
+
+You will have to submit this via the user News interface, then approve
+this via the Administrator News interface.
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rename from components/net/lwip-2.1.2/src/apps/http/http_client.c
rename to components/net/lwip/lwip-2.1.2/src/apps/http/http_client.c
diff --git a/components/net/lwip-2.1.2/src/apps/http/httpd.c b/components/net/lwip/lwip-2.1.2/src/apps/http/httpd.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/http/httpd.c
rename to components/net/lwip/lwip-2.1.2/src/apps/http/httpd.c
diff --git a/components/net/lwip-2.1.2/src/apps/http/httpd_structs.h b/components/net/lwip/lwip-2.1.2/src/apps/http/httpd_structs.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/http/httpd_structs.h
rename to components/net/lwip/lwip-2.1.2/src/apps/http/httpd_structs.h
diff --git a/components/net/lwip-2.1.2/src/apps/http/makefsdata/makefsdata b/components/net/lwip/lwip-2.1.2/src/apps/http/makefsdata/makefsdata
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/http/makefsdata/makefsdata
rename to components/net/lwip/lwip-2.1.2/src/apps/http/makefsdata/makefsdata
diff --git a/components/net/lwip-2.1.2/src/apps/http/makefsdata/makefsdata.c b/components/net/lwip/lwip-2.1.2/src/apps/http/makefsdata/makefsdata.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/http/makefsdata/makefsdata.c
rename to components/net/lwip/lwip-2.1.2/src/apps/http/makefsdata/makefsdata.c
diff --git a/components/net/lwip-2.1.2/src/apps/http/makefsdata/readme.txt b/components/net/lwip/lwip-2.1.2/src/apps/http/makefsdata/readme.txt
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/http/makefsdata/readme.txt
rename to components/net/lwip/lwip-2.1.2/src/apps/http/makefsdata/readme.txt
diff --git a/components/net/lwip-2.1.2/src/apps/http/makefsdata/tinydir.h b/components/net/lwip/lwip-2.1.2/src/apps/http/makefsdata/tinydir.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/http/makefsdata/tinydir.h
rename to components/net/lwip/lwip-2.1.2/src/apps/http/makefsdata/tinydir.h
diff --git a/components/net/lwip-2.1.2/src/apps/lwiperf/lwiperf.c b/components/net/lwip/lwip-2.1.2/src/apps/lwiperf/lwiperf.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/lwiperf/lwiperf.c
rename to components/net/lwip/lwip-2.1.2/src/apps/lwiperf/lwiperf.c
diff --git a/components/net/lwip-2.1.2/src/apps/mdns/mdns.c b/components/net/lwip/lwip-2.1.2/src/apps/mdns/mdns.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/mdns/mdns.c
rename to components/net/lwip/lwip-2.1.2/src/apps/mdns/mdns.c
diff --git a/components/net/lwip-2.1.2/src/apps/mqtt/mqtt.c b/components/net/lwip/lwip-2.1.2/src/apps/mqtt/mqtt.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/mqtt/mqtt.c
rename to components/net/lwip/lwip-2.1.2/src/apps/mqtt/mqtt.c
diff --git a/components/net/lwip-2.1.2/src/apps/netbiosns/netbiosns.c b/components/net/lwip/lwip-2.1.2/src/apps/netbiosns/netbiosns.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/netbiosns/netbiosns.c
rename to components/net/lwip/lwip-2.1.2/src/apps/netbiosns/netbiosns.c
diff --git a/components/net/lwip-2.1.2/src/apps/ping/ping.c b/components/net/lwip/lwip-2.1.2/src/apps/ping/ping.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/ping/ping.c
rename to components/net/lwip/lwip-2.1.2/src/apps/ping/ping.c
diff --git a/components/net/lwip-2.1.2/src/apps/smtp/smtp.c b/components/net/lwip/lwip-2.1.2/src/apps/smtp/smtp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/smtp/smtp.c
rename to components/net/lwip/lwip-2.1.2/src/apps/smtp/smtp.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_asn1.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_asn1.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_asn1.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_asn1.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_asn1.h b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_asn1.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_asn1.h
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_asn1.h
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_core.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_core.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_core.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_core.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_core_priv.h b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_core_priv.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_core_priv.h
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_core_priv.h
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_mib2.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_mib2.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_mib2.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_mib2.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_mib2_icmp.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_mib2_icmp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_mib2_icmp.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_mib2_icmp.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_mib2_interfaces.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_mib2_interfaces.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_mib2_interfaces.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_mib2_interfaces.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_mib2_ip.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_mib2_ip.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_mib2_ip.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_mib2_ip.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_mib2_snmp.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_mib2_snmp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_mib2_snmp.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_mib2_snmp.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_mib2_system.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_mib2_system.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_mib2_system.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_mib2_system.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_mib2_tcp.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_mib2_tcp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_mib2_tcp.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_mib2_tcp.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_mib2_udp.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_mib2_udp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_mib2_udp.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_mib2_udp.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_msg.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_msg.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_msg.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_msg.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_msg.h b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_msg.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_msg.h
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_msg.h
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_netconn.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_netconn.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_netconn.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_netconn.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_pbuf_stream.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_pbuf_stream.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_pbuf_stream.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_pbuf_stream.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_pbuf_stream.h b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_pbuf_stream.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_pbuf_stream.h
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_pbuf_stream.h
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_raw.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_raw.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_raw.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_raw.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_scalar.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_scalar.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_scalar.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_scalar.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_snmpv2_framework.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_snmpv2_framework.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_snmpv2_framework.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_snmpv2_framework.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_snmpv2_usm.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_snmpv2_usm.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_snmpv2_usm.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_snmpv2_usm.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_table.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_table.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_table.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_table.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_threadsync.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_threadsync.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_threadsync.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_threadsync.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmp_traps.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_traps.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmp_traps.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmp_traps.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmpv3.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmpv3.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmpv3.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmpv3.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmpv3_mbedtls.c b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmpv3_mbedtls.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmpv3_mbedtls.c
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmpv3_mbedtls.c
diff --git a/components/net/lwip-2.1.2/src/apps/snmp/snmpv3_priv.h b/components/net/lwip/lwip-2.1.2/src/apps/snmp/snmpv3_priv.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/snmp/snmpv3_priv.h
rename to components/net/lwip/lwip-2.1.2/src/apps/snmp/snmpv3_priv.h
diff --git a/components/net/lwip-2.1.2/src/apps/sntp/sntp.c b/components/net/lwip/lwip-2.1.2/src/apps/sntp/sntp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/sntp/sntp.c
rename to components/net/lwip/lwip-2.1.2/src/apps/sntp/sntp.c
diff --git a/components/net/lwip-2.1.2/src/apps/tftp/tftp_port.c b/components/net/lwip/lwip-2.1.2/src/apps/tftp/tftp_port.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/tftp/tftp_port.c
rename to components/net/lwip/lwip-2.1.2/src/apps/tftp/tftp_port.c
diff --git a/components/net/lwip-2.1.2/src/apps/tftp/tftp_server.c b/components/net/lwip/lwip-2.1.2/src/apps/tftp/tftp_server.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/apps/tftp/tftp_server.c
rename to components/net/lwip/lwip-2.1.2/src/apps/tftp/tftp_server.c
diff --git a/components/net/lwip-2.1.2/src/arch/include/arch/bpstruct.h b/components/net/lwip/lwip-2.1.2/src/arch/include/arch/bpstruct.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/arch/include/arch/bpstruct.h
rename to components/net/lwip/lwip-2.1.2/src/arch/include/arch/bpstruct.h
diff --git a/components/net/lwip-2.1.2/src/arch/include/arch/cc.h b/components/net/lwip/lwip-2.1.2/src/arch/include/arch/cc.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/arch/include/arch/cc.h
rename to components/net/lwip/lwip-2.1.2/src/arch/include/arch/cc.h
diff --git a/components/net/lwip-2.1.2/src/arch/include/arch/epstruct.h b/components/net/lwip/lwip-2.1.2/src/arch/include/arch/epstruct.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/arch/include/arch/epstruct.h
rename to components/net/lwip/lwip-2.1.2/src/arch/include/arch/epstruct.h
diff --git a/components/net/lwip-2.1.2/src/arch/include/arch/perf.h b/components/net/lwip/lwip-2.1.2/src/arch/include/arch/perf.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/arch/include/arch/perf.h
rename to components/net/lwip/lwip-2.1.2/src/arch/include/arch/perf.h
diff --git a/components/net/lwip-2.1.2/src/arch/include/arch/sys_arch.h b/components/net/lwip/lwip-2.1.2/src/arch/include/arch/sys_arch.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/arch/include/arch/sys_arch.h
rename to components/net/lwip/lwip-2.1.2/src/arch/include/arch/sys_arch.h
diff --git a/components/net/lwip-2.1.2/src/arch/sys_arch.c b/components/net/lwip/lwip-2.1.2/src/arch/sys_arch.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/arch/sys_arch.c
rename to components/net/lwip/lwip-2.1.2/src/arch/sys_arch.c
diff --git a/components/net/lwip-2.1.2/src/core/altcp.c b/components/net/lwip/lwip-2.1.2/src/core/altcp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/altcp.c
rename to components/net/lwip/lwip-2.1.2/src/core/altcp.c
diff --git a/components/net/lwip-2.1.2/src/core/altcp_alloc.c b/components/net/lwip/lwip-2.1.2/src/core/altcp_alloc.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/altcp_alloc.c
rename to components/net/lwip/lwip-2.1.2/src/core/altcp_alloc.c
diff --git a/components/net/lwip-2.1.2/src/core/altcp_tcp.c b/components/net/lwip/lwip-2.1.2/src/core/altcp_tcp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/altcp_tcp.c
rename to components/net/lwip/lwip-2.1.2/src/core/altcp_tcp.c
diff --git a/components/net/lwip-2.1.2/src/core/def.c b/components/net/lwip/lwip-2.1.2/src/core/def.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/def.c
rename to components/net/lwip/lwip-2.1.2/src/core/def.c
diff --git a/components/net/lwip-2.1.2/src/core/dns.c b/components/net/lwip/lwip-2.1.2/src/core/dns.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/dns.c
rename to components/net/lwip/lwip-2.1.2/src/core/dns.c
diff --git a/components/net/lwip-2.1.2/src/core/inet_chksum.c b/components/net/lwip/lwip-2.1.2/src/core/inet_chksum.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/inet_chksum.c
rename to components/net/lwip/lwip-2.1.2/src/core/inet_chksum.c
diff --git a/components/net/lwip-2.1.2/src/core/init.c b/components/net/lwip/lwip-2.1.2/src/core/init.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/init.c
rename to components/net/lwip/lwip-2.1.2/src/core/init.c
diff --git a/components/net/lwip-2.1.2/src/core/ip.c b/components/net/lwip/lwip-2.1.2/src/core/ip.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ip.c
rename to components/net/lwip/lwip-2.1.2/src/core/ip.c
diff --git a/components/net/lwip-2.1.2/src/core/ipv4/autoip.c b/components/net/lwip/lwip-2.1.2/src/core/ipv4/autoip.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ipv4/autoip.c
rename to components/net/lwip/lwip-2.1.2/src/core/ipv4/autoip.c
diff --git a/components/net/lwip-2.1.2/src/core/ipv4/dhcp.c b/components/net/lwip/lwip-2.1.2/src/core/ipv4/dhcp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ipv4/dhcp.c
rename to components/net/lwip/lwip-2.1.2/src/core/ipv4/dhcp.c
diff --git a/components/net/lwip-2.1.2/src/core/ipv4/etharp.c b/components/net/lwip/lwip-2.1.2/src/core/ipv4/etharp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ipv4/etharp.c
rename to components/net/lwip/lwip-2.1.2/src/core/ipv4/etharp.c
diff --git a/components/net/lwip-2.1.2/src/core/ipv4/icmp.c b/components/net/lwip/lwip-2.1.2/src/core/ipv4/icmp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ipv4/icmp.c
rename to components/net/lwip/lwip-2.1.2/src/core/ipv4/icmp.c
diff --git a/components/net/lwip-2.1.2/src/core/ipv4/igmp.c b/components/net/lwip/lwip-2.1.2/src/core/ipv4/igmp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ipv4/igmp.c
rename to components/net/lwip/lwip-2.1.2/src/core/ipv4/igmp.c
diff --git a/components/net/lwip-2.1.2/src/core/ipv4/ip4.c b/components/net/lwip/lwip-2.1.2/src/core/ipv4/ip4.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ipv4/ip4.c
rename to components/net/lwip/lwip-2.1.2/src/core/ipv4/ip4.c
diff --git a/components/net/lwip-2.1.2/src/core/ipv4/ip4_addr.c b/components/net/lwip/lwip-2.1.2/src/core/ipv4/ip4_addr.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ipv4/ip4_addr.c
rename to components/net/lwip/lwip-2.1.2/src/core/ipv4/ip4_addr.c
diff --git a/components/net/lwip-2.1.2/src/core/ipv4/ip4_frag.c b/components/net/lwip/lwip-2.1.2/src/core/ipv4/ip4_frag.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ipv4/ip4_frag.c
rename to components/net/lwip/lwip-2.1.2/src/core/ipv4/ip4_frag.c
diff --git a/components/net/lwip-2.1.2/src/core/ipv6/dhcp6.c b/components/net/lwip/lwip-2.1.2/src/core/ipv6/dhcp6.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ipv6/dhcp6.c
rename to components/net/lwip/lwip-2.1.2/src/core/ipv6/dhcp6.c
diff --git a/components/net/lwip-2.1.2/src/core/ipv6/ethip6.c b/components/net/lwip/lwip-2.1.2/src/core/ipv6/ethip6.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ipv6/ethip6.c
rename to components/net/lwip/lwip-2.1.2/src/core/ipv6/ethip6.c
diff --git a/components/net/lwip-2.1.2/src/core/ipv6/icmp6.c b/components/net/lwip/lwip-2.1.2/src/core/ipv6/icmp6.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ipv6/icmp6.c
rename to components/net/lwip/lwip-2.1.2/src/core/ipv6/icmp6.c
diff --git a/components/net/lwip-2.1.2/src/core/ipv6/inet6.c b/components/net/lwip/lwip-2.1.2/src/core/ipv6/inet6.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ipv6/inet6.c
rename to components/net/lwip/lwip-2.1.2/src/core/ipv6/inet6.c
diff --git a/components/net/lwip-2.1.2/src/core/ipv6/ip6.c b/components/net/lwip/lwip-2.1.2/src/core/ipv6/ip6.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ipv6/ip6.c
rename to components/net/lwip/lwip-2.1.2/src/core/ipv6/ip6.c
diff --git a/components/net/lwip-2.1.2/src/core/ipv6/ip6_addr.c b/components/net/lwip/lwip-2.1.2/src/core/ipv6/ip6_addr.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ipv6/ip6_addr.c
rename to components/net/lwip/lwip-2.1.2/src/core/ipv6/ip6_addr.c
diff --git a/components/net/lwip-2.1.2/src/core/ipv6/ip6_frag.c b/components/net/lwip/lwip-2.1.2/src/core/ipv6/ip6_frag.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ipv6/ip6_frag.c
rename to components/net/lwip/lwip-2.1.2/src/core/ipv6/ip6_frag.c
diff --git a/components/net/lwip-2.1.2/src/core/ipv6/mld6.c b/components/net/lwip/lwip-2.1.2/src/core/ipv6/mld6.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ipv6/mld6.c
rename to components/net/lwip/lwip-2.1.2/src/core/ipv6/mld6.c
diff --git a/components/net/lwip-2.1.2/src/core/ipv6/nd6.c b/components/net/lwip/lwip-2.1.2/src/core/ipv6/nd6.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/ipv6/nd6.c
rename to components/net/lwip/lwip-2.1.2/src/core/ipv6/nd6.c
diff --git a/components/net/lwip-2.1.2/src/core/mem.c b/components/net/lwip/lwip-2.1.2/src/core/mem.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/mem.c
rename to components/net/lwip/lwip-2.1.2/src/core/mem.c
diff --git a/components/net/lwip-2.1.2/src/core/memp.c b/components/net/lwip/lwip-2.1.2/src/core/memp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/memp.c
rename to components/net/lwip/lwip-2.1.2/src/core/memp.c
diff --git a/components/net/lwip-2.1.2/src/core/netif.c b/components/net/lwip/lwip-2.1.2/src/core/netif.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/netif.c
rename to components/net/lwip/lwip-2.1.2/src/core/netif.c
diff --git a/components/net/lwip-2.1.2/src/core/pbuf.c b/components/net/lwip/lwip-2.1.2/src/core/pbuf.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/pbuf.c
rename to components/net/lwip/lwip-2.1.2/src/core/pbuf.c
diff --git a/components/net/lwip-2.1.2/src/core/raw.c b/components/net/lwip/lwip-2.1.2/src/core/raw.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/raw.c
rename to components/net/lwip/lwip-2.1.2/src/core/raw.c
diff --git a/components/net/lwip-2.1.2/src/core/stats.c b/components/net/lwip/lwip-2.1.2/src/core/stats.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/stats.c
rename to components/net/lwip/lwip-2.1.2/src/core/stats.c
diff --git a/components/net/lwip-2.1.2/src/core/sys.c b/components/net/lwip/lwip-2.1.2/src/core/sys.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/sys.c
rename to components/net/lwip/lwip-2.1.2/src/core/sys.c
diff --git a/components/net/lwip-2.1.2/src/core/tcp.c b/components/net/lwip/lwip-2.1.2/src/core/tcp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/tcp.c
rename to components/net/lwip/lwip-2.1.2/src/core/tcp.c
diff --git a/components/net/lwip-2.1.2/src/core/tcp_in.c b/components/net/lwip/lwip-2.1.2/src/core/tcp_in.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/tcp_in.c
rename to components/net/lwip/lwip-2.1.2/src/core/tcp_in.c
diff --git a/components/net/lwip-2.1.2/src/core/tcp_out.c b/components/net/lwip/lwip-2.1.2/src/core/tcp_out.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/tcp_out.c
rename to components/net/lwip/lwip-2.1.2/src/core/tcp_out.c
diff --git a/components/net/lwip-2.1.2/src/core/timeouts.c b/components/net/lwip/lwip-2.1.2/src/core/timeouts.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/timeouts.c
rename to components/net/lwip/lwip-2.1.2/src/core/timeouts.c
diff --git a/components/net/lwip-2.1.2/src/core/udp.c b/components/net/lwip/lwip-2.1.2/src/core/udp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/core/udp.c
rename to components/net/lwip/lwip-2.1.2/src/core/udp.c
diff --git a/components/net/lwip-2.1.2/src/include/compat/posix/arpa/inet.h b/components/net/lwip/lwip-2.1.2/src/include/compat/posix/arpa/inet.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/compat/posix/arpa/inet.h
rename to components/net/lwip/lwip-2.1.2/src/include/compat/posix/arpa/inet.h
diff --git a/components/net/lwip-2.1.2/src/include/compat/posix/net/if.h b/components/net/lwip/lwip-2.1.2/src/include/compat/posix/net/if.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/compat/posix/net/if.h
rename to components/net/lwip/lwip-2.1.2/src/include/compat/posix/net/if.h
diff --git a/components/net/lwip-2.1.2/src/include/compat/posix/netdb.h b/components/net/lwip/lwip-2.1.2/src/include/compat/posix/netdb.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/compat/posix/netdb.h
rename to components/net/lwip/lwip-2.1.2/src/include/compat/posix/netdb.h
diff --git a/components/net/lwip-2.1.2/src/include/compat/posix/sys/socket.h b/components/net/lwip/lwip-2.1.2/src/include/compat/posix/sys/socket.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/compat/posix/sys/socket.h
rename to components/net/lwip/lwip-2.1.2/src/include/compat/posix/sys/socket.h
diff --git a/components/net/lwip-2.1.2/src/include/compat/stdc/errno.h b/components/net/lwip/lwip-2.1.2/src/include/compat/stdc/errno.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/compat/stdc/errno.h
rename to components/net/lwip/lwip-2.1.2/src/include/compat/stdc/errno.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/altcp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/altcp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/altcp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/altcp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/altcp_tcp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/altcp_tcp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/altcp_tcp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/altcp_tcp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/altcp_tls.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/altcp_tls.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/altcp_tls.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/altcp_tls.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/api.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/api.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/api.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/api.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/FILES b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/FILES
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/FILES
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/FILES
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/altcp_proxyconnect.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/altcp_proxyconnect.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/altcp_proxyconnect.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/altcp_proxyconnect.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/altcp_tls_mbedtls_opts.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/altcp_tls_mbedtls_opts.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/altcp_tls_mbedtls_opts.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/altcp_tls_mbedtls_opts.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/fs.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/fs.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/fs.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/fs.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/http_client.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/http_client.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/http_client.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/http_client.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/httpd.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/httpd.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/httpd.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/httpd.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/httpd_opts.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/httpd_opts.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/httpd_opts.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/httpd_opts.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/lwiperf.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/lwiperf.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/lwiperf.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/lwiperf.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/mdns.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/mdns.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/mdns.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/mdns.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/mdns_opts.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/mdns_opts.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/mdns_opts.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/mdns_opts.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/mdns_priv.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/mdns_priv.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/mdns_priv.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/mdns_priv.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/mqtt.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/mqtt.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/mqtt.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/mqtt.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/mqtt_opts.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/mqtt_opts.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/mqtt_opts.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/mqtt_opts.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/mqtt_priv.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/mqtt_priv.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/mqtt_priv.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/mqtt_priv.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/netbiosns.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/netbiosns.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/netbiosns.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/netbiosns.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/netbiosns_opts.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/netbiosns_opts.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/netbiosns_opts.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/netbiosns_opts.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/smtp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/smtp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/smtp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/smtp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/smtp_opts.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/smtp_opts.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/smtp_opts.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/smtp_opts.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/snmp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/snmp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/snmp_core.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp_core.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/snmp_core.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp_core.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/snmp_mib2.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp_mib2.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/snmp_mib2.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp_mib2.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/snmp_opts.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp_opts.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/snmp_opts.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp_opts.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/snmp_scalar.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp_scalar.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/snmp_scalar.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp_scalar.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/snmp_snmpv2_framework.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp_snmpv2_framework.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/snmp_snmpv2_framework.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp_snmpv2_framework.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/snmp_snmpv2_usm.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp_snmpv2_usm.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/snmp_snmpv2_usm.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp_snmpv2_usm.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/snmp_table.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp_table.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/snmp_table.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp_table.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/snmp_threadsync.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp_threadsync.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/snmp_threadsync.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmp_threadsync.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/snmpv3.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmpv3.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/snmpv3.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/snmpv3.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/sntp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/sntp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/sntp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/sntp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/sntp_opts.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/sntp_opts.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/sntp_opts.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/sntp_opts.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/tftp_opts.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/tftp_opts.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/tftp_opts.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/tftp_opts.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/apps/tftp_server.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/apps/tftp_server.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/apps/tftp_server.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/apps/tftp_server.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/arch.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/arch.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/arch.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/arch.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/autoip.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/autoip.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/autoip.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/autoip.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/debug.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/debug.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/debug.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/debug.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/def.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/def.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/def.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/def.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/dhcp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/dhcp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/dhcp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/dhcp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/dhcp6.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/dhcp6.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/dhcp6.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/dhcp6.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/dns.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/dns.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/dns.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/dns.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/err.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/err.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/err.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/err.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/errno.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/errno.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/errno.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/errno.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/etharp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/etharp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/etharp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/etharp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/ethip6.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/ethip6.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/ethip6.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/ethip6.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/icmp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/icmp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/icmp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/icmp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/icmp6.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/icmp6.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/icmp6.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/icmp6.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/if_api.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/if_api.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/if_api.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/if_api.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/igmp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/igmp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/igmp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/igmp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/inet.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/inet.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/inet.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/inet.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/inet_chksum.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/inet_chksum.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/inet_chksum.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/inet_chksum.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/init.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/init.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/init.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/init.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/init.h.cmake.in b/components/net/lwip/lwip-2.1.2/src/include/lwip/init.h.cmake.in
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/init.h.cmake.in
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/init.h.cmake.in
diff --git a/components/net/lwip-2.1.2/src/include/lwip/ip.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/ip.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/ip.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/ip.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/ip4.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/ip4.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/ip4.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/ip4.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/ip4_addr.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/ip4_addr.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/ip4_addr.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/ip4_addr.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/ip4_frag.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/ip4_frag.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/ip4_frag.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/ip4_frag.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/ip6.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/ip6.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/ip6.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/ip6.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/ip6_addr.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/ip6_addr.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/ip6_addr.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/ip6_addr.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/ip6_frag.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/ip6_frag.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/ip6_frag.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/ip6_frag.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/ip6_zone.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/ip6_zone.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/ip6_zone.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/ip6_zone.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/ip_addr.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/ip_addr.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/ip_addr.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/ip_addr.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/mem.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/mem.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/mem.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/mem.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/memp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/memp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/memp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/memp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/mld6.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/mld6.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/mld6.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/mld6.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/nd6.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/nd6.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/nd6.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/nd6.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/netbuf.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/netbuf.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/netbuf.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/netbuf.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/netdb.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/netdb.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/netdb.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/netdb.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/netif.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/netif.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/netif.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/netif.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/netifapi.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/netifapi.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/netifapi.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/netifapi.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/opt.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/opt.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/opt.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/opt.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/pbuf.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/pbuf.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/pbuf.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/pbuf.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/priv/altcp_priv.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/priv/altcp_priv.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/priv/altcp_priv.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/priv/altcp_priv.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/priv/api_msg.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/priv/api_msg.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/priv/api_msg.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/priv/api_msg.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/priv/mem_priv.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/priv/mem_priv.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/priv/mem_priv.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/priv/mem_priv.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/priv/memp_priv.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/priv/memp_priv.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/priv/memp_priv.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/priv/memp_priv.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/priv/memp_std.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/priv/memp_std.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/priv/memp_std.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/priv/memp_std.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/priv/nd6_priv.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/priv/nd6_priv.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/priv/nd6_priv.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/priv/nd6_priv.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/priv/raw_priv.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/priv/raw_priv.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/priv/raw_priv.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/priv/raw_priv.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/priv/sockets_priv.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/priv/sockets_priv.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/priv/sockets_priv.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/priv/sockets_priv.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/priv/tcp_priv.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/priv/tcp_priv.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/priv/tcp_priv.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/priv/tcp_priv.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/priv/tcpip_priv.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/priv/tcpip_priv.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/priv/tcpip_priv.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/priv/tcpip_priv.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/autoip.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/autoip.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/autoip.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/autoip.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/dhcp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/dhcp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/dhcp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/dhcp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/dhcp6.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/dhcp6.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/dhcp6.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/dhcp6.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/dns.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/dns.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/dns.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/dns.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/etharp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/etharp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/etharp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/etharp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/ethernet.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/ethernet.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/ethernet.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/ethernet.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/iana.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/iana.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/iana.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/iana.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/icmp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/icmp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/icmp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/icmp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/icmp6.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/icmp6.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/icmp6.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/icmp6.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/ieee.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/ieee.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/ieee.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/ieee.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/igmp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/igmp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/igmp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/igmp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/ip.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/ip.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/ip.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/ip.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/ip4.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/ip4.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/ip4.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/ip4.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/ip6.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/ip6.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/ip6.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/ip6.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/mld6.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/mld6.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/mld6.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/mld6.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/nd6.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/nd6.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/nd6.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/nd6.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/tcp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/tcp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/tcp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/tcp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/prot/udp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/prot/udp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/prot/udp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/prot/udp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/raw.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/raw.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/raw.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/raw.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/sio.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/sio.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/sio.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/sio.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/snmp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/snmp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/snmp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/snmp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/sockets.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/sockets.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/sockets.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/sockets.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/stats.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/stats.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/stats.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/stats.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/sys.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/sys.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/sys.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/sys.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/tcp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/tcp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/tcp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/tcp.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/tcpbase.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/tcpbase.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/tcpbase.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/tcpbase.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/tcpip.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/tcpip.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/tcpip.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/tcpip.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/timeouts.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/timeouts.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/timeouts.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/timeouts.h
diff --git a/components/net/lwip-2.1.2/src/include/lwip/udp.h b/components/net/lwip/lwip-2.1.2/src/include/lwip/udp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/lwip/udp.h
rename to components/net/lwip/lwip-2.1.2/src/include/lwip/udp.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/bridgeif.h b/components/net/lwip/lwip-2.1.2/src/include/netif/bridgeif.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/bridgeif.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/bridgeif.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/bridgeif_opts.h b/components/net/lwip/lwip-2.1.2/src/include/netif/bridgeif_opts.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/bridgeif_opts.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/bridgeif_opts.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/etharp.h b/components/net/lwip/lwip-2.1.2/src/include/netif/etharp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/etharp.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/etharp.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ethernet.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ethernet.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ethernet.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ethernet.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ethernetif.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ethernetif.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ethernetif.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ethernetif.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ieee802154.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ieee802154.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ieee802154.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ieee802154.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/lowpan6.h b/components/net/lwip/lwip-2.1.2/src/include/netif/lowpan6.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/lowpan6.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/lowpan6.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/lowpan6_ble.h b/components/net/lwip/lwip-2.1.2/src/include/netif/lowpan6_ble.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/lowpan6_ble.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/lowpan6_ble.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/lowpan6_common.h b/components/net/lwip/lwip-2.1.2/src/include/netif/lowpan6_common.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/lowpan6_common.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/lowpan6_common.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/lowpan6_opts.h b/components/net/lwip/lwip-2.1.2/src/include/netif/lowpan6_opts.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/lowpan6_opts.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/lowpan6_opts.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/ccp.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/ccp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/ccp.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/ccp.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/chap-md5.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/chap-md5.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/chap-md5.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/chap-md5.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/chap-new.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/chap-new.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/chap-new.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/chap-new.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/chap_ms.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/chap_ms.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/chap_ms.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/chap_ms.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/eap.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/eap.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/eap.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/eap.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/ecp.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/ecp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/ecp.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/ecp.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/eui64.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/eui64.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/eui64.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/eui64.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/fsm.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/fsm.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/fsm.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/fsm.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/ipcp.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/ipcp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/ipcp.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/ipcp.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/ipv6cp.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/ipv6cp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/ipv6cp.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/ipv6cp.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/lcp.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/lcp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/lcp.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/lcp.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/magic.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/magic.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/magic.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/magic.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/mppe.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/mppe.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/mppe.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/mppe.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/polarssl/arc4.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/polarssl/arc4.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/polarssl/arc4.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/polarssl/arc4.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/polarssl/des.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/polarssl/des.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/polarssl/des.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/polarssl/des.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/polarssl/md4.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/polarssl/md4.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/polarssl/md4.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/polarssl/md4.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/polarssl/md5.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/polarssl/md5.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/polarssl/md5.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/polarssl/md5.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/polarssl/sha1.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/polarssl/sha1.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/polarssl/sha1.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/polarssl/sha1.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/ppp.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/ppp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/ppp.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/ppp.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/ppp_impl.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/ppp_impl.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/ppp_impl.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/ppp_impl.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/ppp_opts.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/ppp_opts.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/ppp_opts.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/ppp_opts.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/pppapi.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/pppapi.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/pppapi.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/pppapi.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/pppcrypt.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/pppcrypt.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/pppcrypt.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/pppcrypt.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/pppdebug.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/pppdebug.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/pppdebug.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/pppdebug.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/pppoe.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/pppoe.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/pppoe.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/pppoe.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/pppol2tp.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/pppol2tp.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/pppol2tp.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/pppol2tp.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/pppos.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/pppos.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/pppos.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/pppos.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/upap.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/upap.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/upap.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/upap.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/ppp/vj.h b/components/net/lwip/lwip-2.1.2/src/include/netif/ppp/vj.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/ppp/vj.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/ppp/vj.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/slipif.h b/components/net/lwip/lwip-2.1.2/src/include/netif/slipif.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/slipif.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/slipif.h
diff --git a/components/net/lwip-2.1.2/src/include/netif/zepif.h b/components/net/lwip/lwip-2.1.2/src/include/netif/zepif.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/include/netif/zepif.h
rename to components/net/lwip/lwip-2.1.2/src/include/netif/zepif.h
diff --git a/components/net/lwip-2.1.2/src/lwipopts.h b/components/net/lwip/lwip-2.1.2/src/lwipopts.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/lwipopts.h
rename to components/net/lwip/lwip-2.1.2/src/lwipopts.h
diff --git a/components/net/lwip-2.1.2/src/lwippools.h b/components/net/lwip/lwip-2.1.2/src/lwippools.h
similarity index 100%
rename from components/net/lwip-2.1.2/src/lwippools.h
rename to components/net/lwip/lwip-2.1.2/src/lwippools.h
diff --git a/components/net/lwip-2.1.2/src/netif/FILES b/components/net/lwip/lwip-2.1.2/src/netif/FILES
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/FILES
rename to components/net/lwip/lwip-2.1.2/src/netif/FILES
diff --git a/components/net/lwip-2.1.2/src/netif/bridgeif.c b/components/net/lwip/lwip-2.1.2/src/netif/bridgeif.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/bridgeif.c
rename to components/net/lwip/lwip-2.1.2/src/netif/bridgeif.c
diff --git a/components/net/lwip-2.1.2/src/netif/bridgeif_fdb.c b/components/net/lwip/lwip-2.1.2/src/netif/bridgeif_fdb.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/bridgeif_fdb.c
rename to components/net/lwip/lwip-2.1.2/src/netif/bridgeif_fdb.c
diff --git a/components/net/lwip-2.1.2/src/netif/ethernet.c b/components/net/lwip/lwip-2.1.2/src/netif/ethernet.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ethernet.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ethernet.c
diff --git a/components/net/lwip-2.1.2/src/netif/ethernetif.c b/components/net/lwip/lwip-2.1.2/src/netif/ethernetif.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ethernetif.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ethernetif.c
diff --git a/components/net/lwip-2.1.2/src/netif/lowpan6.c b/components/net/lwip/lwip-2.1.2/src/netif/lowpan6.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/lowpan6.c
rename to components/net/lwip/lwip-2.1.2/src/netif/lowpan6.c
diff --git a/components/net/lwip-2.1.2/src/netif/lowpan6_ble.c b/components/net/lwip/lwip-2.1.2/src/netif/lowpan6_ble.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/lowpan6_ble.c
rename to components/net/lwip/lwip-2.1.2/src/netif/lowpan6_ble.c
diff --git a/components/net/lwip-2.1.2/src/netif/lowpan6_common.c b/components/net/lwip/lwip-2.1.2/src/netif/lowpan6_common.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/lowpan6_common.c
rename to components/net/lwip/lwip-2.1.2/src/netif/lowpan6_common.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/PPPD_FOLLOWUP b/components/net/lwip/lwip-2.1.2/src/netif/ppp/PPPD_FOLLOWUP
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/PPPD_FOLLOWUP
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/PPPD_FOLLOWUP
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/auth.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/auth.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/auth.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/auth.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/ccp.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/ccp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/ccp.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/ccp.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/chap-md5.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/chap-md5.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/chap-md5.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/chap-md5.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/chap-new.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/chap-new.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/chap-new.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/chap-new.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/chap_ms.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/chap_ms.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/chap_ms.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/chap_ms.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/demand.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/demand.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/demand.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/demand.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/eap.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/eap.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/eap.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/eap.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/ecp.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/ecp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/ecp.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/ecp.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/eui64.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/eui64.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/eui64.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/eui64.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/fsm.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/fsm.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/fsm.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/fsm.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/ipcp.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/ipcp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/ipcp.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/ipcp.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/ipv6cp.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/ipv6cp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/ipv6cp.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/ipv6cp.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/lcp.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/lcp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/lcp.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/lcp.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/magic.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/magic.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/magic.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/magic.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/mppe.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/mppe.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/mppe.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/mppe.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/multilink.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/multilink.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/multilink.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/multilink.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/polarssl/README b/components/net/lwip/lwip-2.1.2/src/netif/ppp/polarssl/README
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/polarssl/README
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/polarssl/README
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/polarssl/arc4.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/polarssl/arc4.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/polarssl/arc4.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/polarssl/arc4.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/polarssl/des.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/polarssl/des.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/polarssl/des.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/polarssl/des.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/polarssl/md4.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/polarssl/md4.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/polarssl/md4.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/polarssl/md4.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/polarssl/md5.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/polarssl/md5.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/polarssl/md5.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/polarssl/md5.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/polarssl/sha1.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/polarssl/sha1.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/polarssl/sha1.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/polarssl/sha1.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/ppp.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/ppp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/ppp.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/ppp.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/pppapi.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/pppapi.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/pppapi.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/pppapi.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/pppcrypt.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/pppcrypt.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/pppcrypt.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/pppcrypt.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/pppoe.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/pppoe.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/pppoe.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/pppoe.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/pppol2tp.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/pppol2tp.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/pppol2tp.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/pppol2tp.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/pppos.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/pppos.c
similarity index 100%
rename from components/net/lwip-2.1.2/src/netif/ppp/pppos.c
rename to components/net/lwip/lwip-2.1.2/src/netif/ppp/pppos.c
diff --git a/components/net/lwip-2.1.2/src/netif/ppp/upap.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/upap.c
similarity index 100%
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diff --git a/components/net/lwip-2.1.2/src/netif/ppp/utils.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/utils.c
similarity index 100%
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diff --git a/components/net/lwip-2.1.2/src/netif/ppp/vj.c b/components/net/lwip/lwip-2.1.2/src/netif/ppp/vj.c
similarity index 100%
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diff --git a/components/net/lwip-2.1.2/src/netif/slipif.c b/components/net/lwip/lwip-2.1.2/src/netif/slipif.c
similarity index 100%
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diff --git a/components/net/lwip-2.1.2/src/netif/zepif.c b/components/net/lwip/lwip-2.1.2/src/netif/zepif.c
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diff --git a/components/net/lwip-2.1.2/test/fuzz/Makefile b/components/net/lwip/lwip-2.1.2/test/fuzz/Makefile
similarity index 100%
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diff --git a/components/net/lwip-2.1.2/test/sockets/sockets_stresstest.c b/components/net/lwip/lwip-2.1.2/test/sockets/sockets_stresstest.c
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diff --git a/components/net/lwip-2.1.2/test/unit/Filelists.cmake b/components/net/lwip/lwip-2.1.2/test/unit/Filelists.cmake
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diff --git a/components/net/lwip-2.1.2/test/unit/dhcp/test_dhcp.c b/components/net/lwip/lwip-2.1.2/test/unit/dhcp/test_dhcp.c
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diff --git a/components/net/lwip-2.1.2/test/unit/etharp/test_etharp.c b/components/net/lwip/lwip-2.1.2/test/unit/etharp/test_etharp.c
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diff --git a/components/net/lwip-2.1.2/test/unit/ip4/test_ip4.c b/components/net/lwip/lwip-2.1.2/test/unit/ip4/test_ip4.c
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diff --git a/components/net/lwip-2.1.2/test/unit/ip6/test_ip6.c b/components/net/lwip/lwip-2.1.2/test/unit/ip6/test_ip6.c
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diff --git a/components/net/lwip-2.1.2/test/unit/lwip_check.h b/components/net/lwip/lwip-2.1.2/test/unit/lwip_check.h
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diff --git a/components/net/lwip-2.1.2/test/unit/mqtt/test_mqtt.c b/components/net/lwip/lwip-2.1.2/test/unit/mqtt/test_mqtt.c
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diff --git a/components/net/lwip-2.1.2/test/unit/tcp/tcp_helper.c b/components/net/lwip/lwip-2.1.2/test/unit/tcp/tcp_helper.c
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diff --git a/components/net/lwip-2.1.2/test/unit/tcp/test_tcp_oos.h b/components/net/lwip/lwip-2.1.2/test/unit/tcp/test_tcp_oos.h
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diff --git a/components/net/lwip-2.1.2/test/unit/udp/test_udp.c b/components/net/lwip/lwip-2.1.2/test/unit/udp/test_udp.c
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diff --git a/components/net/lwip-2.1.2/test/unit/udp/test_udp.h b/components/net/lwip/lwip-2.1.2/test/unit/udp/test_udp.h
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diff --git a/components/net/lwip/port/README.md b/components/net/lwip/port/README.md
new file mode 100644
index 0000000000..bec6b14309
--- /dev/null
+++ b/components/net/lwip/port/README.md
@@ -0,0 +1,2 @@
+This folder is common for LWIP.
+
diff --git a/components/net/netdev/Kconfig b/components/net/netdev/Kconfig
new file mode 100644
index 0000000000..5f1697d7ba
--- /dev/null
+++ b/components/net/netdev/Kconfig
@@ -0,0 +1,41 @@
+menuconfig RT_USING_NETDEV
+    bool "Enable network interface device"
+    default n
+
+if RT_USING_NETDEV
+
+    config NETDEV_USING_IFCONFIG
+        bool "Enable ifconfig features"
+        default y
+
+    config NETDEV_USING_PING
+        bool "Enable ping features"
+        default y
+
+    config NETDEV_USING_NETSTAT
+        bool "Enable netstat features"
+        default y
+
+    config NETDEV_USING_AUTO_DEFAULT
+        bool "Enable default netdev automatic change features"
+        default y
+
+    config NETDEV_USING_IPV6
+        bool "Enable IPV6 protocol support"
+        default n
+
+    config NETDEV_IPV4
+        int
+        default 1
+
+    config NETDEV_IPV6
+        int
+        default 1 if NETDEV_USING_IPV6
+        default 0 if !NETDEV_USING_IPV6
+
+    config NETDEV_IPV6_SCOPES
+        bool
+        help
+            Defined to synchronize the ip6_addr structure state
+        default n
+endif
diff --git a/components/net/sal/Kconfig b/components/net/sal/Kconfig
new file mode 100644
index 0000000000..1274258ce6
--- /dev/null
+++ b/components/net/sal/Kconfig
@@ -0,0 +1,53 @@
+menuconfig RT_USING_SAL
+    bool "Enable socket abstraction layer (SAL)"
+    select RT_USING_NETDEV
+    select RT_USING_SYSTEM_WORKQUEUE
+    default n
+
+if RT_USING_SAL
+
+    config SAL_INTERNET_CHECK
+        bool "Enable the ability that check internet status"
+        default y
+        help
+            The ability that check internet status is provided by RT-Thread.
+
+    if RT_USING_LWIP || AT_USING_SOCKET
+
+        menu "protocol stack implement"
+
+            config SAL_USING_LWIP
+                bool "Support lwIP stack"
+                default y
+                depends on RT_USING_LWIP
+
+            config SAL_USING_AT
+                bool "Support AT Commands stack"
+                default y
+                depends on AT_USING_SOCKET
+
+            config SAL_USING_TLS
+                bool "Support MbedTLS protocol"
+                default y
+                depends on PKG_USING_MBEDTLS
+        endmenu
+
+    endif
+
+    config SAL_USING_POSIX
+        bool "Enable BSD socket operated by file system API"
+        default n
+        select RT_USING_POSIX_FS
+        select RT_USING_POSIX_SELECT
+        help
+            Let BSD socket operated by file system API, such as read/write and involveed in select/poll POSIX APIs.
+
+    if !SAL_USING_POSIX
+
+        config SAL_SOCKETS_NUM
+            int "the maximum number of sockets"
+            default 16
+
+    endif
+
+endif
diff --git a/components/net/sal_socket/SConscript b/components/net/sal/SConscript
similarity index 100%
rename from components/net/sal_socket/SConscript
rename to components/net/sal/SConscript
diff --git a/components/net/sal_socket/dfs_net/dfs_net.c b/components/net/sal/dfs_net/dfs_net.c
similarity index 100%
rename from components/net/sal_socket/dfs_net/dfs_net.c
rename to components/net/sal/dfs_net/dfs_net.c
diff --git a/components/net/sal_socket/impl/af_inet.h b/components/net/sal/impl/af_inet.h
similarity index 100%
rename from components/net/sal_socket/impl/af_inet.h
rename to components/net/sal/impl/af_inet.h
diff --git a/components/net/sal_socket/impl/af_inet_at.c b/components/net/sal/impl/af_inet_at.c
similarity index 100%
rename from components/net/sal_socket/impl/af_inet_at.c
rename to components/net/sal/impl/af_inet_at.c
diff --git a/components/net/sal_socket/impl/af_inet_lwip.c b/components/net/sal/impl/af_inet_lwip.c
similarity index 100%
rename from components/net/sal_socket/impl/af_inet_lwip.c
rename to components/net/sal/impl/af_inet_lwip.c
diff --git a/components/net/sal_socket/impl/proto_mbedtls.c b/components/net/sal/impl/proto_mbedtls.c
similarity index 100%
rename from components/net/sal_socket/impl/proto_mbedtls.c
rename to components/net/sal/impl/proto_mbedtls.c
diff --git a/components/net/sal_socket/include/dfs_net/dfs_net.h b/components/net/sal/include/dfs_net/dfs_net.h
similarity index 100%
rename from components/net/sal_socket/include/dfs_net/dfs_net.h
rename to components/net/sal/include/dfs_net/dfs_net.h
diff --git a/components/net/sal_socket/include/sal.h b/components/net/sal/include/sal.h
similarity index 100%
rename from components/net/sal_socket/include/sal.h
rename to components/net/sal/include/sal.h
diff --git a/components/net/sal_socket/include/sal_netdb.h b/components/net/sal/include/sal_netdb.h
similarity index 100%
rename from components/net/sal_socket/include/sal_netdb.h
rename to components/net/sal/include/sal_netdb.h
diff --git a/components/net/sal_socket/include/sal_socket.h b/components/net/sal/include/sal_socket.h
similarity index 100%
rename from components/net/sal_socket/include/sal_socket.h
rename to components/net/sal/include/sal_socket.h
diff --git a/components/net/sal_socket/include/sal_tls.h b/components/net/sal/include/sal_tls.h
similarity index 100%
rename from components/net/sal_socket/include/sal_tls.h
rename to components/net/sal/include/sal_tls.h
diff --git a/components/net/sal_socket/include/socket/netdb.h b/components/net/sal/include/socket/netdb.h
similarity index 100%
rename from components/net/sal_socket/include/socket/netdb.h
rename to components/net/sal/include/socket/netdb.h
diff --git a/components/net/sal_socket/include/socket/netinet/in.h b/components/net/sal/include/socket/netinet/in.h
similarity index 100%
rename from components/net/sal_socket/include/socket/netinet/in.h
rename to components/net/sal/include/socket/netinet/in.h
diff --git a/components/net/sal_socket/include/socket/netinet/tcp.h b/components/net/sal/include/socket/netinet/tcp.h
similarity index 100%
rename from components/net/sal_socket/include/socket/netinet/tcp.h
rename to components/net/sal/include/socket/netinet/tcp.h
diff --git a/components/net/sal_socket/include/socket/netinet/udp.h b/components/net/sal/include/socket/netinet/udp.h
similarity index 100%
rename from components/net/sal_socket/include/socket/netinet/udp.h
rename to components/net/sal/include/socket/netinet/udp.h
diff --git a/components/net/sal_socket/include/socket/sys_socket/sys/socket.h b/components/net/sal/include/socket/sys_socket/sys/socket.h
similarity index 100%
rename from components/net/sal_socket/include/socket/sys_socket/sys/socket.h
rename to components/net/sal/include/socket/sys_socket/sys/socket.h
diff --git a/components/net/sal_socket/socket/net_netdb.c b/components/net/sal/socket/net_netdb.c
similarity index 100%
rename from components/net/sal_socket/socket/net_netdb.c
rename to components/net/sal/socket/net_netdb.c
diff --git a/components/net/sal_socket/socket/net_sockets.c b/components/net/sal/socket/net_sockets.c
similarity index 100%
rename from components/net/sal_socket/socket/net_sockets.c
rename to components/net/sal/socket/net_sockets.c
diff --git a/components/net/sal_socket/src/sal_socket.c b/components/net/sal/src/sal_socket.c
similarity index 100%
rename from components/net/sal_socket/src/sal_socket.c
rename to components/net/sal/src/sal_socket.c