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Merge pull request #58 from BernardXiong/master 

Add the first porting for lwip 1.4.1.
This commit is contained in:
Bernard Xiong 2013-03-25 01:44:12 -07:00
parent 3fbbb5d75a 86fc696957
commit 0876aa9b11
12 changed files with 1899 additions and 262 deletions
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5
components/net/SConscript
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# for network related component
import os
Import('RTT_ROOT')
from building import *
objs = []
list = os.listdir(os.path.join(RTT_ROOT, 'components', 'net'))
# the default version of LWIP is 1.4.0
if not GetDepend('RT_USING_LWIP132') and not GetDepend('RT_USING_LWIP141'):
AddDepend('RT_USING_LWIP140')
for d in list:
path = os.path.join(RTT_ROOT, 'components', 'net', d)
if os.path.isfile(os.path.join(path, 'SConscript')):

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components/net/lwip-1.4.1/SConscript Normal file
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Import('RTT_ROOT')
from building import *
src = Split("""
src/api/api_lib.c
src/api/api_msg.c
src/api/err.c
src/api/netbuf.c
src/api/netdb.c
src/api/netifapi.c
src/api/sockets.c
src/api/tcpip.c
src/arch/sys_arch.c
src/core/def.c
src/core/dhcp.c
src/core/dns.c
src/core/init.c
src/core/memp.c
src/core/netif.c
src/core/pbuf.c
src/core/raw.c
src/core/stats.c
src/core/sys.c
src/core/tcp.c
src/core/tcp_in.c
src/core/tcp_out.c
src/core/timers.c
src/core/udp.c
src/core/ipv4/autoip.c
src/core/ipv4/icmp.c
src/core/ipv4/igmp.c
src/core/ipv4/inet.c
src/core/ipv4/inet_chksum.c
src/core/ipv4/ip.c
src/core/ipv4/ip_addr.c
src/core/ipv4/ip_frag.c
src/netif/etharp.c
src/netif/ethernetif.c
src/netif/slipif.c
""")
snmp_src = Split("""
src/core/snmp/asn1_dec.c
src/core/snmp/asn1_enc.c
src/core/snmp/mib2.c
src/core/snmp/mib_structs.c
src/core/snmp/msg_in.c
src/core/snmp/msg_out.c
""")
ppp_src = Split("""
src/netif/ppp/auth.c
src/netif/ppp/chap.c
src/netif/ppp/chpms.c
src/netif/ppp/fsm.c
src/netif/ppp/ipcp.c
src/netif/ppp/lcp.c
src/netif/ppp/magic.c
src/netif/ppp/md5.c
src/netif/ppp/pap.c
src/netif/ppp/ppp.c
src/netif/ppp/ppp_oe.c
src/netif/ppp/randm.c
src/netif/ppp/vj.c
""")
# The set of source files associated with this SConscript file.
path = [GetCurrentDir() + '/src',
GetCurrentDir() + '/src/include',
GetCurrentDir() + '/src/include/ipv4',
GetCurrentDir() + '/src/arch/include',
GetCurrentDir() + '/src/include/netif']
if GetDepend(['RT_LWIP_SNMP']):
src += snmp_src
if GetDepend(['RT_LWIP_PPP']):
src += ppp_src
path += [GetCurrentDir() + '/src/netif/ppp']
# For testing apps
if GetDepend(['RT_USING_NETUTILS']):
src += Glob('./apps/*.c')
group = DefineGroup('LwIP', src, depend = ['RT_USING_LWIP', 'RT_USING_LWIP141'], CPPPATH = path)
Return('group')

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components/net/lwip-1.4.1/src/arch/include/arch/bpstruct.h Normal file
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/*
* Copyright (c) 2001-2003 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#if defined(__ICCARM__)
#pragma pack(1)
#endif

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components/net/lwip-1.4.1/src/arch/include/arch/cc.h Normal file
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/*
* Copyright (c) 2001, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
* $Id: cc.h,v 1.1.1.1 2004/12/16 14:17:13 bear Exp $
*/
#ifndef __ARCH_CC_H__
#define __ARCH_CC_H__
#include <rthw.h>
#include <rtthread.h>
typedef rt_uint8_t u8_t;
typedef rt_int8_t s8_t;
typedef rt_uint16_t u16_t;
typedef rt_int16_t s16_t;
typedef rt_uint32_t u32_t;
typedef rt_int32_t s32_t;
typedef rt_uint32_t mem_ptr_t;
#define U16_F "hu"
#define S16_F "hd"
#define X16_F "hx"
#define U32_F "lu"
#define S32_F "ld"
#define X32_F "lx"
#ifdef RT_USING_NEWLIB
#include <errno.h>
/* some errno not defined in newlib */
#define ENSRNOTFOUND 163 /* Domain name not found */
/* WARNING: ESHUTDOWN also not defined in newlib. We chose
180 here because the number "108" which is used
in arch.h has been assigned to another error code. */
#define ESHUTDOWN 180
#elif RT_USING_MINILIBC
#include <errno.h>
#define EADDRNOTAVAIL 99 /* Cannot assign requested address */
#else
#define LWIP_PROVIDE_ERRNO
#endif
#ifdef RT_USING_MINILIBC
#include <time.h>
#define LWIP_TIMEVAL_PRIVATE 0
#endif
#if defined(__CC_ARM) /* ARMCC compiler */
#define PACK_STRUCT_FIELD(x) x
#define PACK_STRUCT_STRUCT __attribute__ ((__packed__))
#define PACK_STRUCT_BEGIN
#define PACK_STRUCT_END
#elif defined(__IAR_SYSTEMS_ICC__) /* IAR Compiler */
#define PACK_STRUCT_BEGIN
#define PACK_STRUCT_STRUCT
#define PACK_STRUCT_END
#define PACK_STRUCT_FIELD(x) x
#define PACK_STRUCT_USE_INCLUDES
#elif defined(__GNUC__) /* GNU GCC Compiler */
#define PACK_STRUCT_FIELD(x) x
#define PACK_STRUCT_STRUCT __attribute__((packed))
#define PACK_STRUCT_BEGIN
#define PACK_STRUCT_END
#elif defined(_MSC_VER)
#define PACK_STRUCT_FIELD(x) x
#define PACK_STRUCT_STRUCT
#define PACK_STRUCT_BEGIN
#define PACK_STRUCT_END
#endif
void sys_arch_assert(const char* file, int line);
#define LWIP_PLATFORM_DIAG(x) do {rt_kprintf x;} while(0)
#define LWIP_PLATFORM_ASSERT(x) do {rt_kprintf(x); sys_arch_assert(__FILE__, __LINE__);}while(0)
#include "string.h"
#endif /* __ARCH_CC_H__ */

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components/net/lwip-1.4.1/src/arch/include/arch/epstruct.h Normal file
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/*
* Copyright (c) 2001-2003 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#if defined(__ICCARM__)
#pragma pack()
#endif

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components/net/lwip-1.4.1/src/arch/include/arch/perf.h Normal file
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/*
* Copyright (c) 2001, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
* $Id: perf.h,v 1.1.1.1 2004/12/16 14:17:13 bear Exp $
*/
#ifndef __ARCH_PERF_H__
#define __ARCH_PERF_H__
//#include <sys/times.h>
#define PERF_START /* null definition */
#define PERF_STOP(x) /* null definition */
/*
void perf_print(unsigned long c1l, unsigned long c1h,
unsigned long c2l, unsigned long c2h,
char *key);
void perf_print_times(struct tms *start, struct tms *end, char *key);
void perf_init(char *fname);
*/
#endif /* __ARCH_PERF_H__ */

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components/net/lwip-1.4.1/src/arch/include/arch/sys_arch.h Normal file
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/*
* Copyright (c) 2001, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
* $Id: sys_arch.h,v 1.3 2005/03/13 16:03:23 bear Exp $
*/
#ifndef __ARCH_SYS_ARCH_H__
#define __ARCH_SYS_ARCH_H__
#include "arch/cc.h"
#include <rtthread.h>
#ifndef BYTE_ORDER
#define BYTE_ORDER LITTLE_ENDIAN
#endif
#define SYS_MBOX_NULL RT_NULL
#define SYS_SEM_NULL RT_NULL
typedef u32_t sys_prot_t;
#define SYS_MBOX_SIZE 10
#define SYS_LWIP_TIMER_NAME "timer"
#define SYS_LWIP_MBOX_NAME "mbox"
#define SYS_LWIP_SEM_NAME "sem"
#define SYS_LWIP_MUTEX_NAME "mu"
typedef rt_sem_t sys_sem_t;
typedef rt_mutex_t sys_mutex_t;
typedef rt_mailbox_t sys_mbox_t;
typedef rt_thread_t sys_thread_t;
#endif /* __ARCH_SYS_ARCH_H__ */

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components/net/lwip-1.4.1/src/arch/sys_arch.c Normal file
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/*
* File : sys_arch.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2012, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2012-12-8 Bernard add file header
* export bsd socket symbol for RT-Thread Application Module
*/
#include <rtthread.h>
#include "lwip/sys.h"
#include "lwip/opt.h"
#include "lwip/stats.h"
#include "lwip/err.h"
#include "arch/sys_arch.h"
#include "lwip/debug.h"
#include "lwip/netif.h"
#include "lwip/tcpip.h"
#include "netif/ethernetif.h"
#include "lwip/sio.h"
#include <string.h>
static err_t netif_device_init(struct netif *netif)
{
struct eth_device *ethif;
ethif = (struct eth_device *)netif->state;
if (ethif != RT_NULL)
{
rt_device_t device;
/* get device object */
device = (rt_device_t) ethif;
if (rt_device_init(device) != RT_EOK)
{
return ERR_IF;
}
/* copy device flags to netif flags */
netif->flags = ethif->flags;
return ERR_OK;
}
return ERR_IF;
}
static void tcpip_init_done_callback(void *arg)
{
rt_device_t device;
struct eth_device *ethif;
struct ip_addr ipaddr, netmask, gw;
struct rt_list_node* node;
struct rt_object* object;
struct rt_object_information *information;
extern struct rt_object_information rt_object_container[];
LWIP_ASSERT("invalid arg.\n",arg);
IP4_ADDR(&gw, 0,0,0,0);
IP4_ADDR(&ipaddr, 0,0,0,0);
IP4_ADDR(&netmask, 0,0,0,0);
/* enter critical */
rt_enter_critical();
/* for each network interfaces */
information = &rt_object_container[RT_Object_Class_Device];
for (node = information->object_list.next;
node != &(information->object_list);
node = node->next)
{
object = rt_list_entry(node, struct rt_object, list);
device = (rt_device_t)object;
if (device->type == RT_Device_Class_NetIf)
{
ethif = (struct eth_device *)device;
/* leave critical */
rt_exit_critical();
netif_add(ethif->netif, &ipaddr, &netmask, &gw,
ethif, netif_device_init, tcpip_input);
if (netif_default == RT_NULL)
netif_set_default(ethif->netif);
#if LWIP_DHCP
if (ethif->flags & NETIF_FLAG_DHCP)
{
/* if this interface uses DHCP, start the DHCP client */
dhcp_start(ethif->netif);
}
else
#endif
{
/* set interface up */
netif_set_up(ethif->netif);
}
#ifdef LWIP_NETIF_LINK_CALLBACK
netif_set_link_up(ethif->netif);
#endif
/* enter critical */
rt_enter_critical();
}
}
/* leave critical */
rt_exit_critical();
rt_sem_release((rt_sem_t)arg);
}
/**
* LwIP system initialization
*/
void lwip_system_init(void)
{
rt_err_t rc;
struct rt_semaphore done_sem;
/* set default netif to NULL */
netif_default = RT_NULL;
rc = rt_sem_init(&done_sem, "done", 0, RT_IPC_FLAG_FIFO);
if (rc != RT_EOK)
{
LWIP_ASSERT("Failed to create semaphore", 0);
return;
}
tcpip_init(tcpip_init_done_callback, (void *)&done_sem);
/* waiting for initialization done */
if (rt_sem_take(&done_sem, RT_WAITING_FOREVER) != RT_EOK)
{
rt_sem_detach(&done_sem);
return;
}
rt_sem_detach(&done_sem);
/* set default ip address */
#if !LWIP_DHCP
if (netif_default != RT_NULL)
{
struct ip_addr ipaddr, netmask, gw;
IP4_ADDR(&ipaddr, RT_LWIP_IPADDR0, RT_LWIP_IPADDR1, RT_LWIP_IPADDR2, RT_LWIP_IPADDR3);
IP4_ADDR(&gw, RT_LWIP_GWADDR0, RT_LWIP_GWADDR1, RT_LWIP_GWADDR2, RT_LWIP_GWADDR3);
IP4_ADDR(&netmask, RT_LWIP_MSKADDR0, RT_LWIP_MSKADDR1, RT_LWIP_MSKADDR2, RT_LWIP_MSKADDR3);
netifapi_netif_set_addr(netif_default, &ipaddr, &netmask, &gw);
}
#endif
}
void sys_init(void)
{
/* nothing on RT-Thread porting */
}
void lwip_sys_init(void)
{
lwip_system_init();
}
err_t sys_sem_new(sys_sem_t *sem, u8_t count)
{
static unsigned short counter = 0;
char tname[RT_NAME_MAX];
sys_sem_t tmpsem;
RT_DEBUG_NOT_IN_INTERRUPT;
rt_snprintf(tname, RT_NAME_MAX, "%s%d", SYS_LWIP_SEM_NAME, counter);
counter ++;
tmpsem = rt_sem_create(tname, count, RT_IPC_FLAG_FIFO);
if (tmpsem == RT_NULL)
return ERR_MEM;
else
{
*sem = tmpsem;
return ERR_OK;
}
}
void sys_sem_free(sys_sem_t *sem)
{
RT_DEBUG_NOT_IN_INTERRUPT;
rt_sem_delete(*sem);
}
void sys_sem_signal(sys_sem_t *sem)
{
rt_sem_release(*sem);
}
u32_t sys_arch_sem_wait(sys_sem_t *sem, u32_t timeout)
{
rt_err_t ret;
s32_t t;
u32_t tick;
RT_DEBUG_NOT_IN_INTERRUPT;
/* get the begin tick */
tick = rt_tick_get();
if (timeout == 0)
t = RT_WAITING_FOREVER;
else
{
/* convert msecond to os tick */
if (timeout < (1000/RT_TICK_PER_SECOND))
t = 1;
else
t = timeout / (1000/RT_TICK_PER_SECOND);
}
ret = rt_sem_take(*sem, t);
if (ret == -RT_ETIMEOUT)
return SYS_ARCH_TIMEOUT;
else
{
if (ret == RT_EOK)
ret = 1;
}
/* get elapse msecond */
tick = rt_tick_get() - tick;
/* convert tick to msecond */
tick = tick * (1000 / RT_TICK_PER_SECOND);
if (tick == 0)
tick = 1;
return tick;
}
#ifndef sys_sem_valid
/** Check if a semaphore is valid/allocated:
* return 1 for valid, 0 for invalid
*/
int sys_sem_valid(sys_sem_t *sem)
{
return (int)(*sem);
}
#endif
#ifndef sys_sem_set_invalid
/** Set a semaphore invalid so that sys_sem_valid returns 0
*/
void sys_sem_set_invalid(sys_sem_t *sem)
{
*sem = RT_NULL;
}
#endif
/* ====================== Mutex ====================== */
/** Create a new mutex
* @param mutex pointer to the mutex to create
* @return a new mutex
*/
err_t sys_mutex_new(sys_mutex_t *mutex)
{
static unsigned short counter = 0;
char tname[RT_NAME_MAX];
sys_mutex_t tmpmutex;
RT_DEBUG_NOT_IN_INTERRUPT;
rt_snprintf(tname, RT_NAME_MAX, "%s%d", SYS_LWIP_MUTEX_NAME, counter);
counter ++;
tmpmutex = rt_mutex_create(tname, RT_IPC_FLAG_FIFO);
if (tmpmutex == RT_NULL)
return ERR_MEM;
else
{
*mutex = tmpmutex;
return ERR_OK;
}
}
/** Lock a mutex
* @param mutex the mutex to lock
*/
void sys_mutex_lock(sys_mutex_t *mutex)
{
RT_DEBUG_NOT_IN_INTERRUPT;
rt_mutex_take(*mutex, RT_WAITING_FOREVER);
return;
}
/** Unlock a mutex
* @param mutex the mutex to unlock
*/
void sys_mutex_unlock(sys_mutex_t *mutex)
{
rt_mutex_release(*mutex);
}
/** Delete a semaphore
* @param mutex the mutex to delete
*/
void sys_mutex_free(sys_mutex_t *mutex)
{
RT_DEBUG_NOT_IN_INTERRUPT;
rt_mutex_delete(*mutex);
}
#ifndef sys_mutex_valid
/** Check if a mutex is valid/allocated:
* return 1 for valid, 0 for invalid
*/
int sys_mutex_valid(sys_mutex_t *mutex)
{
return (int)(*mutex);
}
#endif
#ifndef sys_mutex_set_invalid
/** Set a mutex invalid so that sys_mutex_valid returns 0
*/
void sys_mutex_set_invalid(sys_mutex_t *mutex)
{
*mutex = RT_NULL;
}
#endif
/* ====================== Mailbox ====================== */
err_t sys_mbox_new(sys_mbox_t *mbox, int size)
{
static unsigned short counter = 0;
char tname[RT_NAME_MAX];
sys_mbox_t tmpmbox;
RT_DEBUG_NOT_IN_INTERRUPT;
rt_snprintf(tname, RT_NAME_MAX, "%s%d", SYS_LWIP_MBOX_NAME, counter);
counter ++;
tmpmbox = rt_mb_create(tname, size, RT_IPC_FLAG_FIFO);
if (tmpmbox != RT_NULL)
{
*mbox = tmpmbox;
return ERR_OK;
}
return ERR_MEM;
}
void sys_mbox_free(sys_mbox_t *mbox)
{
RT_DEBUG_NOT_IN_INTERRUPT;
rt_mb_delete(*mbox);
return;
}
/** Post a message to an mbox - may not fail
* -> blocks if full, only used from tasks not from ISR
* @param mbox mbox to posts the message
* @param msg message to post (ATTENTION: can be NULL)
*/
void sys_mbox_post(sys_mbox_t *mbox, void *msg)
{
RT_DEBUG_NOT_IN_INTERRUPT;
rt_mb_send_wait(*mbox, (rt_uint32_t)msg, RT_WAITING_FOREVER);
return;
}
err_t sys_mbox_trypost(sys_mbox_t *mbox, void *msg)
{
if (rt_mb_send(*mbox, (rt_uint32_t)msg) == RT_EOK)
return ERR_OK;
return ERR_MEM;
}
/** Wait for a new message to arrive in the mbox
* @param mbox mbox to get a message from
* @param msg pointer where the message is stored
* @param timeout maximum time (in milliseconds) to wait for a message
* @return time (in milliseconds) waited for a message, may be 0 if not waited
or SYS_ARCH_TIMEOUT on timeout
* The returned time has to be accurate to prevent timer jitter!
*/
u32_t sys_arch_mbox_fetch(sys_mbox_t *mbox, void **msg, u32_t timeout)
{
rt_err_t ret;
s32_t t;
u32_t tick;
RT_DEBUG_NOT_IN_INTERRUPT;
/* get the begin tick */
tick = rt_tick_get();
if(timeout == 0)
t = RT_WAITING_FOREVER;
else
{
/* convirt msecond to os tick */
if (timeout < (1000/RT_TICK_PER_SECOND))
t = 1;
else
t = timeout / (1000/RT_TICK_PER_SECOND);
}
ret = rt_mb_recv(*mbox, (rt_uint32_t *)msg, t);
if(ret == -RT_ETIMEOUT)
return SYS_ARCH_TIMEOUT;
else
{
LWIP_ASSERT("rt_mb_recv returned with error!", ret == RT_EOK);
}
/* get elapse msecond */
tick = rt_tick_get() - tick;
/* convert tick to msecond */
tick = tick * (1000 / RT_TICK_PER_SECOND);
if (tick == 0)
tick = 1;
return tick;
}
/** Wait for a new message to arrive in the mbox
* @param mbox mbox to get a message from
* @param msg pointer where the message is stored
* @param timeout maximum time (in milliseconds) to wait for a message
* @return 0 (milliseconds) if a message has been received
* or SYS_MBOX_EMPTY if the mailbox is empty
*/
u32_t sys_arch_mbox_tryfetch(sys_mbox_t *mbox, void **msg)
{
int ret;
ret = rt_mb_recv(*mbox, (rt_uint32_t *)msg, 0);
if(ret == -RT_ETIMEOUT)
return SYS_ARCH_TIMEOUT;
else
{
if (ret == RT_EOK)
ret = 1;
}
return ret;
}
#ifndef sys_mbox_valid
/** Check if an mbox is valid/allocated:
* return 1 for valid, 0 for invalid
*/
int sys_mbox_valid(sys_mbox_t *mbox)
{
return (int)(*mbox);
}
#endif
#ifndef sys_mbox_set_invalid
/** Set an mbox invalid so that sys_mbox_valid returns 0
*/
void sys_mbox_set_invalid(sys_mbox_t *mbox)
{
*mbox = RT_NULL;
}
#endif
/* ====================== System ====================== */
sys_thread_t sys_thread_new(const char *name,
lwip_thread_fn thread,
void *arg,
int stacksize,
int prio)
{
rt_thread_t t;
RT_DEBUG_NOT_IN_INTERRUPT;
/* create thread */
t = rt_thread_create(name, thread, arg, stacksize, prio, 20);
RT_ASSERT(t != RT_NULL);
/* startup thread */
rt_thread_startup(t);
return t;
}
sys_prot_t sys_arch_protect(void)
{
rt_base_t level;
/* disable interrupt */
level = rt_hw_interrupt_disable();
return level;
}
void sys_arch_unprotect(sys_prot_t pval)
{
/* enable interrupt */
rt_hw_interrupt_enable(pval);
return;
}
void sys_arch_assert(const char *file, int line)
{
rt_kprintf("\nAssertion: %d in %s, thread %s\n",
line, file, rt_thread_self()->name);
RT_ASSERT(0);
}
u32_t sys_jiffies(void)
{
return rt_tick_get();
}
#ifdef RT_LWIP_PPP
u32_t sio_read(sio_fd_t fd, u8_t *buf, u32_t size)
{
u32_t len;
RT_ASSERT(fd != RT_NULL);
len = rt_device_read((rt_device_t)fd, 0, buf, size);
if (len <= 0)
return 0;
return len;
}
u32_t sio_write(sio_fd_t fd, u8_t *buf, u32_t size)
{
RT_ASSERT(fd != RT_NULL);
return rt_device_write((rt_device_t)fd, 0, buf, size);
}
void sio_read_abort(sio_fd_t fd)
{
rt_kprintf("read_abort\n");
}
void ppp_trace(int level, const char *format, ...)
{
va_list args;
rt_size_t length;
static char rt_log_buf[RT_CONSOLEBUF_SIZE];
va_start(args, format);
length = rt_vsprintf(rt_log_buf, format, args);
rt_device_write((rt_device_t)rt_console_get_device(), 0, rt_log_buf, length);
va_end(args);
}
#endif
/*
* export bsd socket symbol for RT-Thread Application Module
*/
#if LWIP_SOCKET
#include <lwip/sockets.h>
RTM_EXPORT(lwip_accept);
RTM_EXPORT(lwip_bind);
RTM_EXPORT(lwip_shutdown);
RTM_EXPORT(lwip_getpeername);
RTM_EXPORT(lwip_getsockname);
RTM_EXPORT(lwip_getsockopt);
RTM_EXPORT(lwip_setsockopt);
RTM_EXPORT(lwip_close);
RTM_EXPORT(lwip_connect);
RTM_EXPORT(lwip_listen);
RTM_EXPORT(lwip_recv);
RTM_EXPORT(lwip_read);
RTM_EXPORT(lwip_recvfrom);
RTM_EXPORT(lwip_send);
RTM_EXPORT(lwip_sendto);
RTM_EXPORT(lwip_socket);
RTM_EXPORT(lwip_write);
RTM_EXPORT(lwip_select);
RTM_EXPORT(lwip_ioctl);
RTM_EXPORT(lwip_fcntl);
#if LWIP_DNS
#include <lwip/netdb.h>
RTM_EXPORT(lwip_gethostbyname);
RTM_EXPORT(lwip_gethostbyname_r);
RTM_EXPORT(lwip_freeaddrinfo);
RTM_EXPORT(lwip_getaddrinfo);
#endif
#endif
#if LWIP_DHCP
#include <lwip/dhcp.h>
RTM_EXPORT(dhcp_start);
RTM_EXPORT(dhcp_renew);
RTM_EXPORT(dhcp_stop);
#endif
#if LWIP_NETIF_API
#include <lwip/netifapi.h>
RTM_EXPORT(netifapi_netif_set_addr);
#endif

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@ -0,0 +1,35 @@
#ifndef __NETIF_ETHERNETIF_H__
#define __NETIF_ETHERNETIF_H__
#include "lwip/netif.h"
#include <rtthread.h>
#define NIOCTL_GADDR 0x01
#define ETHERNET_MTU 1500
struct eth_device
{
/* inherit from rt_device */
struct rt_device parent;
/* network interface for lwip */
struct netif *netif;
struct rt_semaphore tx_ack;
rt_uint8_t flags;
rt_uint8_t link_changed;
rt_uint16_t link_status;
/* eth device interface */
struct pbuf* (*eth_rx)(rt_device_t dev);
rt_err_t (*eth_tx)(rt_device_t dev, struct pbuf* p);
};
rt_err_t eth_device_ready(struct eth_device* dev);
rt_err_t eth_device_init(struct eth_device * dev, char *name);
rt_err_t eth_device_init_with_flag(struct eth_device *dev, char *name, rt_uint8_t flag);
rt_err_t eth_device_linkchange(struct eth_device* dev, rt_bool_t up);
void eth_system_device_init(void);
#endif /* __NETIF_ETHERNETIF_H__ */

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@ -0,0 +1,333 @@
#ifndef __LWIPOPTS_H__
#define __LWIPOPTS_H__
#include <rtconfig.h>
#define ERRNO 1
#define NO_SYS 0
#define LWIP_SOCKET 1
#define LWIP_NETCONN 1
#ifdef RT_LWIP_IGMP
#define LWIP_IGMP 1
#else
#define LWIP_IGMP 0
#endif
#ifdef RT_LWIP_ICMP
#define LWIP_ICMP 1
#else
#define LWIP_ICMP 0
#endif
#ifdef RT_LWIP_SNMP
#define LWIP_SNMP 1
#else
#define LWIP_SNMP 0
#endif
#ifdef RT_LWIP_DNS
#define LWIP_DNS 1
#else
#define LWIP_DNS 0
#endif
#define LWIP_HAVE_LOOPIF 0
#define LWIP_PLATFORM_BYTESWAP 0
#define BYTE_ORDER LITTLE_ENDIAN
/* Enable SO_RCVTIMEO processing. */
#define LWIP_SO_RCVTIMEO 1
/* #define RT_LWIP_DEBUG */
#ifdef RT_LWIP_DEBUG
#define LWIP_DEBUG
#endif
/* ---------- Debug options ---------- */
#ifdef LWIP_DEBUG
#define SYS_DEBUG LWIP_DBG_OFF
#define ETHARP_DEBUG LWIP_DBG_OFF
#define PPP_DEBUG LWIP_DBG_OFF
#define MEM_DEBUG LWIP_DBG_OFF
#define MEMP_DEBUG LWIP_DBG_OFF
#define PBUF_DEBUG LWIP_DBG_OFF
#define API_LIB_DEBUG LWIP_DBG_OFF
#define API_MSG_DEBUG LWIP_DBG_OFF
#define TCPIP_DEBUG LWIP_DBG_OFF
#define NETIF_DEBUG LWIP_DBG_OFF
#define SOCKETS_DEBUG LWIP_DBG_OFF
#define DNS_DEBUG LWIP_DBG_OFF
#define AUTOIP_DEBUG LWIP_DBG_OFF
#define DHCP_DEBUG LWIP_DBG_OFF
#define IP_DEBUG LWIP_DBG_OFF
#define IP_REASS_DEBUG LWIP_DBG_OFF
#define ICMP_DEBUG LWIP_DBG_OFF
#define IGMP_DEBUG LWIP_DBG_OFF
#define UDP_DEBUG LWIP_DBG_OFF
#define TCP_DEBUG LWIP_DBG_OFF
#define TCP_INPUT_DEBUG LWIP_DBG_OFF
#define TCP_OUTPUT_DEBUG LWIP_DBG_OFF
#define TCP_RTO_DEBUG LWIP_DBG_OFF
#define TCP_CWND_DEBUG LWIP_DBG_OFF
#define TCP_WND_DEBUG LWIP_DBG_OFF
#define TCP_FR_DEBUG LWIP_DBG_OFF
#define TCP_QLEN_DEBUG LWIP_DBG_OFF
#define TCP_RST_DEBUG LWIP_DBG_OFF
#endif
#define LWIP_DBG_TYPES_ON (LWIP_DBG_ON|LWIP_DBG_TRACE|LWIP_DBG_STATE|LWIP_DBG_FRESH|LWIP_DBG_HALT)
/* ---------- Memory options ---------- */
#ifdef RT_LWIP_ALIGN_SIZE
#define MEM_ALIGNMENT RT_LWIP_ALIGN_SIZE
#else
#define MEM_ALIGNMENT 4
#endif
#define MEM_LIBC_MALLOC 1
#define mem_malloc rt_malloc
#define mem_free rt_free
#define mem_calloc rt_calloc
#ifdef RT_LWIP_USING_RT_MEM
#define MEMP_MEM_MALLOC 1
#else
#define MEMP_MEM_MALLOC 0
#endif
/* MEMP_NUM_PBUF: the number of memp struct pbufs. If the application
sends a lot of data out of ROM (or other static memory), this
should be set high. */
#define MEMP_NUM_PBUF 16
/* the number of UDP protocol control blocks. One per active RAW "connection". */
#ifdef RT_LWIP_RAW_PCB_NUM
#define MEMP_NUM_RAW_PCB RT_LWIP_RAW_PCB_NUM
#endif
/* the number of UDP protocol control blocks. One per active UDP "connection". */
#ifdef RT_LWIP_UDP_PCB_NUM
#define MEMP_NUM_UDP_PCB RT_LWIP_UDP_PCB_NUM
#endif
/* the number of simulatenously active TCP connections. */
#ifdef RT_LWIP_TCP_PCB_NUM
#define MEMP_NUM_TCP_PCB RT_LWIP_TCP_PCB_NUM
#endif
/* the number of simultaneously queued TCP */
#ifdef RT_LWIP_TCP_SEG_NUM
#define MEMP_NUM_TCP_SEG TCP_SND_QUEUELEN
#endif
/* The following four are used only with the sequential API and can be
set to 0 if the application only will use the raw API. */
/* MEMP_NUM_NETBUF: the number of struct netbufs. */
#define MEMP_NUM_NETBUF 2
/* MEMP_NUM_NETCONN: the number of struct netconns. */
#define MEMP_NUM_NETCONN 4
/* MEMP_NUM_TCPIP_MSG_*: the number of struct tcpip_msg, which is used
for sequential API communication and incoming packets. Used in
src/api/tcpip.c. */
#define MEMP_NUM_TCPIP_MSG_API 16
#define MEMP_NUM_TCPIP_MSG_INPKT 16
/* ---------- Pbuf options ---------- */
/* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. */
#ifdef RT_LWIP_PBUF_NUM
#define PBUF_POOL_SIZE RT_LWIP_PBUF_NUM
#endif
/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */
#ifdef RT_LWIP_PBUF_POOL_BUFSIZE
#define PBUF_POOL_BUFSIZE RT_LWIP_PBUF_POOL_BUFSIZE
#endif
/* PBUF_LINK_HLEN: the number of bytes that should be allocated for a
link level header. */
#define PBUF_LINK_HLEN 16
#ifdef RT_LWIP_ETH_PAD_SIZE
#define ETH_PAD_SIZE RT_LWIP_ETH_PAD_SIZE
#endif
/** SYS_LIGHTWEIGHT_PROT
* define SYS_LIGHTWEIGHT_PROT in lwipopts.h if you want inter-task protection
* for certain critical regions during buffer allocation, deallocation and memory
* allocation and deallocation.
*/
#define SYS_LIGHTWEIGHT_PROT (NO_SYS==0)
/* ---------- TCP options ---------- */
#ifdef RT_LWIP_TCP
#define LWIP_TCP 1
#else
#define LWIP_TCP 0
#endif
#define TCP_TTL 255
/* Controls if TCP should queue segments that arrive out of
order. Define to 0 if your device is low on memory. */
#define TCP_QUEUE_OOSEQ 1
/* TCP Maximum segment size. */
#define TCP_MSS 1460
/* TCP sender buffer space (bytes). */
#define TCP_SND_BUF (TCP_MSS * 2)
/* TCP sender buffer space (pbufs). This must be at least = 2 *
TCP_SND_BUF/TCP_MSS for things to work. */
#define TCP_SND_QUEUELEN (4 * TCP_SND_BUF/TCP_MSS)
/* TCP writable space (bytes). This must be less than or equal
to TCP_SND_BUF. It is the amount of space which must be
available in the tcp snd_buf for select to return writable */
#define TCP_SNDLOWAT (TCP_SND_BUF/2)
#define TCP_SNDQUEUELOWAT TCP_SND_QUEUELEN/2
/* TCP receive window. */
#ifdef RT_LWIP_TCP_WND
#define TCP_WND RT_LWIP_TCP_WND
#else
#define TCP_WND (TCP_MSS * 2)
#endif
/* Maximum number of retransmissions of data segments. */
#define TCP_MAXRTX 12
/* Maximum number of retransmissions of SYN segments. */
#define TCP_SYNMAXRTX 4
/* tcpip thread options */
#ifdef RT_LWIP_TCPTHREAD_PRIORITY
#define TCPIP_MBOX_SIZE RT_LWIP_TCPTHREAD_MBOX_SIZE
#define TCPIP_THREAD_PRIO RT_LWIP_TCPTHREAD_PRIORITY
#define TCPIP_THREAD_STACKSIZE RT_LWIP_TCPTHREAD_STACKSIZE
#else
#define TCPIP_MBOX_SIZE 8
#define TCPIP_THREAD_PRIO 128
#define TCPIP_THREAD_STACKSIZE 4096
#endif
#define TCPIP_THREAD_NAME "tcpip"
#define DEFAULT_TCP_RECVMBOX_SIZE 10
/* ---------- ARP options ---------- */
#define LWIP_ARP 1
#define ARP_TABLE_SIZE 10
#define ARP_QUEUEING 1
/* ---------- IP options ---------- */
/* Define IP_FORWARD to 1 if you wish to have the ability to forward
IP packets across network interfaces. If you are going to run lwIP
on a device with only one network interface, define this to 0. */
#define IP_FORWARD 0
/* IP reassembly and segmentation.These are orthogonal even
* if they both deal with IP fragments */
#define IP_REASSEMBLY 0
#define IP_REASS_MAX_PBUFS 10
#define MEMP_NUM_REASSDATA 10
#define IP_FRAG 0
/* ---------- ICMP options ---------- */
#define ICMP_TTL 255
/* ---------- DHCP options ---------- */
/* Define LWIP_DHCP to 1 if you want DHCP configuration of
interfaces. */
#ifdef RT_LWIP_DHCP
#define LWIP_DHCP 1
#else
#define LWIP_DHCP 0
#endif
/* 1 if you want to do an ARP check on the offered address
(recommended). */
#define DHCP_DOES_ARP_CHECK (LWIP_DHCP)
/* ---------- AUTOIP options ------- */
#define LWIP_AUTOIP 0
#define LWIP_DHCP_AUTOIP_COOP (LWIP_DHCP && LWIP_AUTOIP)
/* ---------- UDP options ---------- */
#ifdef RT_LWIP_UDP
#define LWIP_UDP 1
#else
#define LWIP_UDP 0
#endif
#define LWIP_UDPLITE 0
#define UDP_TTL 255
#define DEFAULT_UDP_RECVMBOX_SIZE 1
/* ---------- RAW options ---------- */
#define DEFAULT_RAW_RECVMBOX_SIZE 1
#define DEFAULT_ACCEPTMBOX_SIZE 10
/* ---------- Statistics options ---------- */
#ifdef RT_LWIP_STATS
#define LWIP_STATS 1
#define LWIP_STATS_DISPLAY 1
#else
#define LWIP_STATS 0
#endif
#if LWIP_STATS
#define LINK_STATS 1
#define IP_STATS 1
#define ICMP_STATS 1
#define IGMP_STATS 1
#define IPFRAG_STATS 1
#define UDP_STATS 1
#define TCP_STATS 1
#define MEM_STATS 1
#define MEMP_STATS 1
#define PBUF_STATS 1
#define SYS_STATS 1
#endif /* LWIP_STATS */
/* ---------- PPP options ---------- */
#ifdef RT_LWIP_PPP
#define PPP_SUPPORT 1 /* Set > 0 for PPP */
#else
#define PPP_SUPPORT 0 /* Set > 0 for PPP */
#endif
#if PPP_SUPPORT
#define NUM_PPP 1 /* Max PPP sessions. */
/* Select modules to enable. Ideally these would be set in the makefile but
* we're limited by the command line length so you need to modify the settings
* in this file.
*/
#define PPPOE_SUPPORT 0
#define PPPOS_SUPPORT 1
#define PAP_SUPPORT 1 /* Set > 0 for PAP. */
#define CHAP_SUPPORT 1 /* Set > 0 for CHAP. */
#define MSCHAP_SUPPORT 0 /* Set > 0 for MSCHAP (NOT FUNCTIONAL!) */
#define CBCP_SUPPORT 0 /* Set > 0 for CBCP (NOT FUNCTIONAL!) */
#define CCP_SUPPORT 0 /* Set > 0 for CCP (NOT FUNCTIONAL!) */
#define VJ_SUPPORT 1 /* Set > 0 for VJ header compression. */
#define MD5_SUPPORT 1 /* Set > 0 for MD5 (see also CHAP) */
#endif /* PPP_SUPPORT */
/* no read/write/close for socket */
#define LWIP_POSIX_SOCKETS_IO_NAMES 0
#define LWIP_NETIF_API 1
/* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active timeouts. */
#define MEMP_NUM_SYS_TIMEOUT (LWIP_TCP + IP_REASSEMBLY + LWIP_ARP + (2*LWIP_DHCP) + LWIP_AUTOIP + LWIP_IGMP + LWIP_DNS + PPP_SUPPORT)
#ifdef LWIP_IGMP
#include <stdlib.h>
#define LWIP_RAND rand
#endif
#endif /* __LWIPOPTS_H__ */

744
components/net/lwip-1.4.1/src/netif/ethernetif.c
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@ -1,7 +1,20 @@
/**
* @file
* Ethernet Interface Skeleton
/*
* File : ethernetif.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2010, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2010-07-07 Bernard fix send mail to mailbox issue.
* 2011-07-30 mbbill port lwIP 1.4.0 to RT-Thread
* 2012-04-10 Bernard add more compatible with RT-Thread.
* 2012-11-12 Bernard The network interface can be initialized
* after lwIP initialization.
* 2013-02-28 aozima fixed list_tcps bug: ipaddr_ntoa isn't reentrant.
*/
/*
@ -36,282 +49,519 @@
*
*/
/*
* This file is a skeleton for developing Ethernet network interface
* drivers for lwIP. Add code to the low_level functions and do a
* search-and-replace for the word "ethernetif" to replace it with
* something that better describes your network interface.
*/
#include <rtthread.h>
#include "lwip/opt.h"
#if 0 /* don't build, this is only a skeleton, see previous comment */
#include "lwip/debug.h"
#include "lwip/def.h"
#include "lwip/mem.h"
#include "lwip/pbuf.h"
#include <lwip/stats.h>
#include <lwip/snmp.h>
#include "netif/etharp.h"
#include "netif/ppp_oe.h"
#include "lwip/sys.h"
#include "lwip/netif.h"
#include "lwip/stats.h"
#include "lwip/tcpip.h"
/* Define those to better describe your network interface. */
#define IFNAME0 'e'
#define IFNAME1 'n'
#include "netif/etharp.h"
#include "netif/ethernetif.h"
#define netifapi_netif_set_link_up(n) netifapi_netif_common(n, netif_set_link_up, NULL)
#define netifapi_netif_set_link_down(n) netifapi_netif_common(n, netif_set_link_down, NULL)
/**
* Helper struct to hold private data used to operate your ethernet interface.
* Keeping the ethernet address of the MAC in this struct is not necessary
* as it is already kept in the struct netif.
* But this is only an example, anyway...
* Tx message structure for Ethernet interface
*/
struct ethernetif {
struct eth_addr *ethaddr;
/* Add whatever per-interface state that is needed here. */
struct eth_tx_msg
{
struct netif *netif;
struct pbuf *buf;
};
/* Forward declarations. */
static void ethernetif_input(struct netif *netif);
static struct rt_mailbox eth_tx_thread_mb;
static struct rt_thread eth_tx_thread;
#ifndef RT_LWIP_ETHTHREAD_PRIORITY
static char eth_tx_thread_mb_pool[32 * 4];
static char eth_tx_thread_stack[512];
#else
static char eth_tx_thread_mb_pool[RT_LWIP_ETHTHREAD_MBOX_SIZE * 4];
static char eth_tx_thread_stack[RT_LWIP_ETHTHREAD_STACKSIZE];
#endif
/**
* In this function, the hardware should be initialized.
* Called from ethernetif_init().
*
* @param netif the already initialized lwip network interface structure
* for this ethernetif
*/
static void
low_level_init(struct netif *netif)
static struct rt_mailbox eth_rx_thread_mb;
static struct rt_thread eth_rx_thread;
#ifndef RT_LWIP_ETHTHREAD_PRIORITY
#define RT_ETHERNETIF_THREAD_PREORITY 0x90
static char eth_rx_thread_mb_pool[48 * 4];
static char eth_rx_thread_stack[1024];
#else
#define RT_ETHERNETIF_THREAD_PREORITY RT_LWIP_ETHTHREAD_PRIORITY
static char eth_rx_thread_mb_pool[RT_LWIP_ETHTHREAD_MBOX_SIZE * 4];
static char eth_rx_thread_stack[RT_LWIP_ETHTHREAD_STACKSIZE];
#endif
static err_t ethernetif_linkoutput(struct netif *netif, struct pbuf *p)
{
struct ethernetif *ethernetif = netif->state;
struct eth_tx_msg msg;
struct eth_device* enetif;
/* set MAC hardware address length */
netif->hwaddr_len = ETHARP_HWADDR_LEN;
enetif = (struct eth_device*)netif->state;
/* set MAC hardware address */
netif->hwaddr[0] = ;
...
netif->hwaddr[5] = ;
/* maximum transfer unit */
netif->mtu = 1500;
/* device capabilities */
/* don't set NETIF_FLAG_ETHARP if this device is not an ethernet one */
netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;
/* Do whatever else is needed to initialize interface. */
}
/**
* This function should do the actual transmission of the packet. The packet is
* contained in the pbuf that is passed to the function. This pbuf
* might be chained.
*
* @param netif the lwip network interface structure for this ethernetif
* @param p the MAC packet to send (e.g. IP packet including MAC addresses and type)
* @return ERR_OK if the packet could be sent
* an err_t value if the packet couldn't be sent
*
* @note Returning ERR_MEM here if a DMA queue of your MAC is full can lead to
* strange results. You might consider waiting for space in the DMA queue
* to become availale since the stack doesn't retry to send a packet
* dropped because of memory failure (except for the TCP timers).
*/
static err_t
low_level_output(struct netif *netif, struct pbuf *p)
{
struct ethernetif *ethernetif = netif->state;
struct pbuf *q;
initiate transfer();
#if ETH_PAD_SIZE
pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
#endif
for(q = p; q != NULL; q = q->next) {
/* Send the data from the pbuf to the interface, one pbuf at a
time. The size of the data in each pbuf is kept in the ->len
variable. */
send data from(q->payload, q->len);
}
signal that packet should be sent();
#if ETH_PAD_SIZE
pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
#endif
LINK_STATS_INC(link.xmit);
return ERR_OK;
}
/**
* Should allocate a pbuf and transfer the bytes of the incoming
* packet from the interface into the pbuf.
*
* @param netif the lwip network interface structure for this ethernetif
* @return a pbuf filled with the received packet (including MAC header)
* NULL on memory error
*/
static struct pbuf *
low_level_input(struct netif *netif)
{
struct ethernetif *ethernetif = netif->state;
struct pbuf *p, *q;
u16_t len;
/* Obtain the size of the packet and put it into the "len"
variable. */
len = ;
#if ETH_PAD_SIZE
len += ETH_PAD_SIZE; /* allow room for Ethernet padding */
#endif
/* We allocate a pbuf chain of pbufs from the pool. */
p = pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
if (p != NULL) {
#if ETH_PAD_SIZE
pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
#endif
/* We iterate over the pbuf chain until we have read the entire
* packet into the pbuf. */
for(q = p; q != NULL; q = q->next) {
/* Read enough bytes to fill this pbuf in the chain. The
* available data in the pbuf is given by the q->len
* variable.
* This does not necessarily have to be a memcpy, you can also preallocate
* pbufs for a DMA-enabled MAC and after receiving truncate it to the
* actually received size. In this case, ensure the tot_len member of the
* pbuf is the sum of the chained pbuf len members.
*/
read data into(q->payload, q->len);
/* send a message to eth tx thread */
msg.netif = netif;
msg.buf = p;
if (rt_mb_send(&eth_tx_thread_mb, (rt_uint32_t) &msg) == RT_EOK)
{
/* waiting for ack */
rt_sem_take(&(enetif->tx_ack), RT_WAITING_FOREVER);
}
acknowledge that packet has been read();
#if ETH_PAD_SIZE
pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
return ERR_OK;
}
static err_t eth_netif_device_init(struct netif *netif)
{
struct eth_device *ethif;
ethif = (struct eth_device*)netif->state;
if (ethif != RT_NULL)
{
rt_device_t device;
/* get device object */
device = (rt_device_t) ethif;
if (rt_device_init(device) != RT_EOK)
{
return ERR_IF;
}
/* copy device flags to netif flags */
netif->flags = ethif->flags;
/* set default netif */
if (netif_default == RT_NULL)
netif_set_default(ethif->netif);
#if LWIP_DHCP
if (ethif->flags & NETIF_FLAG_DHCP)
{
/* if this interface uses DHCP, start the DHCP client */
dhcp_start(ethif->netif);
}
else
#endif
{
/* set interface up */
netif_set_up(ethif->netif);
}
#ifdef LWIP_NETIF_LINK_CALLBACK
netif_set_link_up(ethif->netif);
#endif
LINK_STATS_INC(link.recv);
} else {
drop packet();
LINK_STATS_INC(link.memerr);
LINK_STATS_INC(link.drop);
}
return ERR_OK;
}
return p;
return ERR_IF;
}
/**
* This function should be called when a packet is ready to be read
* from the interface. It uses the function low_level_input() that
* should handle the actual reception of bytes from the network
* interface. Then the type of the received packet is determined and
* the appropriate input function is called.
*
* @param netif the lwip network interface structure for this ethernetif
*/
static void
ethernetif_input(struct netif *netif)
/* Keep old drivers compatible in RT-Thread */
rt_err_t eth_device_init_with_flag(struct eth_device *dev, char *name, rt_uint8_t flags)
{
struct ethernetif *ethernetif;
struct eth_hdr *ethhdr;
struct pbuf *p;
struct netif* netif;
ethernetif = netif->state;
netif = (struct netif*) rt_malloc (sizeof(struct netif));
if (netif == RT_NULL)
{
rt_kprintf("malloc netif failed\n");
return -RT_ERROR;
}
rt_memset(netif, 0, sizeof(struct netif));
/* move received packet into a new pbuf */
p = low_level_input(netif);
/* no packet could be read, silently ignore this */
if (p == NULL) return;
/* points to packet payload, which starts with an Ethernet header */
ethhdr = p->payload;
/* set netif */
dev->netif = netif;
/* device flags, which will be set to netif flags when initializing */
dev->flags = flags;
/* link changed status of device */
dev->link_changed = 0x00;
dev->parent.type = RT_Device_Class_NetIf;
/* register to RT-Thread device manager */
rt_device_register(&(dev->parent), name, RT_DEVICE_FLAG_RDWR);
rt_sem_init(&(dev->tx_ack), name, 0, RT_IPC_FLAG_FIFO);
switch (htons(ethhdr->type)) {
/* IP or ARP packet? */
case ETHTYPE_IP:
case ETHTYPE_ARP:
#if PPPOE_SUPPORT
/* PPPoE packet? */
case ETHTYPE_PPPOEDISC:
case ETHTYPE_PPPOE:
#endif /* PPPOE_SUPPORT */
/* full packet send to tcpip_thread to process */
if (netif->input(p, netif)!=ERR_OK)
{ LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\n"));
pbuf_free(p);
p = NULL;
}
break;
/* set name */
netif->name[0] = name[0];
netif->name[1] = name[1];
default:
pbuf_free(p);
p = NULL;
break;
}
/* set hw address to 6 */
netif->hwaddr_len = 6;
/* maximum transfer unit */
netif->mtu = ETHERNET_MTU;
/* get hardware MAC address */
rt_device_control(&(dev->parent), NIOCTL_GADDR, netif->hwaddr);
/* set output */
netif->output = etharp_output;
netif->linkoutput = ethernetif_linkoutput;
/* if tcp thread has been started up, we add this netif to the system */
if (rt_thread_find("tcpip") != RT_NULL)
{
struct ip_addr ipaddr, netmask, gw;
#if !LWIP_DHCP
IP4_ADDR(&ipaddr, RT_LWIP_IPADDR0, RT_LWIP_IPADDR1, RT_LWIP_IPADDR2, RT_LWIP_IPADDR3);
IP4_ADDR(&gw, RT_LWIP_GWADDR0, RT_LWIP_GWADDR1, RT_LWIP_GWADDR2, RT_LWIP_GWADDR3);
IP4_ADDR(&netmask, RT_LWIP_MSKADDR0, RT_LWIP_MSKADDR1, RT_LWIP_MSKADDR2, RT_LWIP_MSKADDR3);
#else
IP4_ADDR(&ipaddr, 0, 0, 0, 0);
IP4_ADDR(&gw, 0, 0, 0, 0);
IP4_ADDR(&netmask, 0, 0, 0, 0);
#endif
netifapi_netif_add(netif, &ipaddr, &netmask, &gw, dev, eth_netif_device_init, tcpip_input);
}
return RT_EOK;
}
/**
* Should be called at the beginning of the program to set up the
* network interface. It calls the function low_level_init() to do the
* actual setup of the hardware.
*
* This function should be passed as a parameter to netif_add().
*
* @param netif the lwip network interface structure for this ethernetif
* @return ERR_OK if the loopif is initialized
* ERR_MEM if private data couldn't be allocated
* any other err_t on error
*/
err_t
ethernetif_init(struct netif *netif)
rt_err_t eth_device_init(struct eth_device * dev, char *name)
{
struct ethernetif *ethernetif;
rt_uint8_t flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP;
LWIP_ASSERT("netif != NULL", (netif != NULL));
#if LWIP_DHCP
/* DHCP support */
flags |= NETIF_FLAG_DHCP;
#endif
ethernetif = mem_malloc(sizeof(struct ethernetif));
if (ethernetif == NULL) {
LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_init: out of memory\n"));
return ERR_MEM;
}
#if LWIP_IGMP
/* IGMP support */
flags |= NETIF_FLAG_IGMP;
#endif
#if LWIP_NETIF_HOSTNAME
/* Initialize interface hostname */
netif->hostname = "lwip";
#endif /* LWIP_NETIF_HOSTNAME */
/*
* Initialize the snmp variables and counters inside the struct netif.
* The last argument should be replaced with your link speed, in units
* of bits per second.
*/
NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, LINK_SPEED_OF_YOUR_NETIF_IN_BPS);
netif->state = ethernetif;
netif->name[0] = IFNAME0;
netif->name[1] = IFNAME1;
/* We directly use etharp_output() here to save a function call.
* You can instead declare your own function an call etharp_output()
* from it if you have to do some checks before sending (e.g. if link
* is available...) */
netif->output = etharp_output;
netif->linkoutput = low_level_output;
ethernetif->ethaddr = (struct eth_addr *)&(netif->hwaddr[0]);
/* initialize the hardware */
low_level_init(netif);
return ERR_OK;
return eth_device_init_with_flag(dev, name, flags);
}
#endif /* 0 */
rt_err_t eth_device_ready(struct eth_device* dev)
{
if (dev->netif)
/* post message to Ethernet thread */
return rt_mb_send(&eth_rx_thread_mb, (rt_uint32_t)dev);
else
return ERR_OK; /* netif is not initialized yet, just return. */
}
rt_err_t eth_device_linkchange(struct eth_device* dev, rt_bool_t up)
{
rt_uint32_t level;
RT_ASSERT(dev != RT_NULL);
level = rt_hw_interrupt_disable();
dev->link_changed = 0x01;
if (up == RT_TRUE)
dev->link_status = 0x01;
else
dev->link_status = 0x00;
rt_hw_interrupt_enable(level);
/* post message to ethernet thread */
return rt_mb_send(&eth_rx_thread_mb, (rt_uint32_t)dev);
}
/* Ethernet Tx Thread */
static void eth_tx_thread_entry(void* parameter)
{
struct eth_tx_msg* msg;
while (1)
{
if (rt_mb_recv(&eth_tx_thread_mb, (rt_uint32_t*)&msg, RT_WAITING_FOREVER) == RT_EOK)
{
struct eth_device* enetif;
RT_ASSERT(msg->netif != RT_NULL);
RT_ASSERT(msg->buf != RT_NULL);
enetif = (struct eth_device*)msg->netif->state;
if (enetif != RT_NULL)
{
/* call driver's interface */
if (enetif->eth_tx(&(enetif->parent), msg->buf) != RT_EOK)
{
rt_kprintf("transmit eth packet failed\n");
}
}
/* send ACK */
rt_sem_release(&(enetif->tx_ack));
}
}
}
/* Ethernet Rx Thread */
static void eth_rx_thread_entry(void* parameter)
{
struct eth_device* device;
while (1)
{
if (rt_mb_recv(&eth_rx_thread_mb, (rt_uint32_t*)&device, RT_WAITING_FOREVER) == RT_EOK)
{
struct pbuf *p;
/* check link status */
if (device->link_changed)
{
int status;
rt_uint32_t level;
level = rt_hw_interrupt_disable();
status = device->link_status;
device->link_changed = 0x00;
rt_hw_interrupt_enable(level);
if (status)
netifapi_netif_set_link_up(device->netif);
else
netifapi_netif_set_link_down(device->netif);
}
/* receive all of buffer */
while (1)
{
p = device->eth_rx(&(device->parent));
if (p != RT_NULL)
{
/* notify to upper layer */
if( device->netif->input(p, device->netif) != ERR_OK )
{
LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: Input error\n"));
pbuf_free(p);
p = NULL;
}
}
else break;
}
}
else
{
LWIP_ASSERT("Should not happen!\n",0);
}
}
}
void eth_system_device_init()
{
rt_err_t result = RT_EOK;
/* initialize Rx thread.
* initialize mailbox and create Ethernet Rx thread */
result = rt_mb_init(&eth_rx_thread_mb, "erxmb",
&eth_rx_thread_mb_pool[0], sizeof(eth_rx_thread_mb_pool)/4,
RT_IPC_FLAG_FIFO);
RT_ASSERT(result == RT_EOK);
result = rt_thread_init(&eth_rx_thread, "erx", eth_rx_thread_entry, RT_NULL,
&eth_rx_thread_stack[0], sizeof(eth_rx_thread_stack),
RT_LWIP_ETHTHREAD_PRIORITY, 16);
RT_ASSERT(result == RT_EOK);
result = rt_thread_startup(&eth_rx_thread);
RT_ASSERT(result == RT_EOK);
/* initialize Tx thread */
/* initialize mailbox and create Ethernet Tx thread */
result = rt_mb_init(&eth_tx_thread_mb, "etxmb",
&eth_tx_thread_mb_pool[0], sizeof(eth_tx_thread_mb_pool)/4,
RT_IPC_FLAG_FIFO);
RT_ASSERT(result == RT_EOK);
result = rt_thread_init(&eth_tx_thread, "etx", eth_tx_thread_entry, RT_NULL,
&eth_tx_thread_stack[0], sizeof(eth_tx_thread_stack),
RT_ETHERNETIF_THREAD_PREORITY, 16);
RT_ASSERT(result == RT_EOK);
result = rt_thread_startup(&eth_tx_thread);
RT_ASSERT(result == RT_EOK);
}
#ifdef RT_USING_FINSH
#include <finsh.h>
void set_if(char* netif_name, char* ip_addr, char* gw_addr, char* nm_addr)
{
struct ip_addr *ip;
struct ip_addr addr;
struct netif * netif = netif_list;
if(strlen(netif_name) > sizeof(netif->name))
{
rt_kprintf("network interface name too long!\r\n");
return;
}
while(netif != RT_NULL)
{
if(strncmp(netif_name, netif->name, sizeof(netif->name)) == 0)
break;
netif = netif->next;
if( netif == RT_NULL )
{
rt_kprintf("network interface: %s not found!\r\n", netif_name);
return;
}
}
ip = (struct ip_addr *)&addr;
/* set ip address */
if ((ip_addr != RT_NULL) && ipaddr_aton(ip_addr, &addr))
{
netif_set_ipaddr(netif, ip);
}
/* set gateway address */
if ((gw_addr != RT_NULL) && ipaddr_aton(gw_addr, &addr))
{
netif_set_gw(netif, ip);
}
/* set netmask address */
if ((nm_addr != RT_NULL) && ipaddr_aton(nm_addr, &addr))
{
netif_set_netmask(netif, ip);
}
}
FINSH_FUNCTION_EXPORT(set_if, set network interface address);
#if LWIP_DNS
#include <lwip/dns.h>
void set_dns(char* dns_server)
{
struct ip_addr addr;
if ((dns_server != RT_NULL) && ipaddr_aton(dns_server, &addr))
{
dns_setserver(0, &addr);
}
}
FINSH_FUNCTION_EXPORT(set_dns, set DNS server address);
#endif
void list_if(void)
{
rt_ubase_t index;
struct netif * netif;
rt_enter_critical();
netif = netif_list;
while( netif != RT_NULL )
{
rt_kprintf("network interface: %c%c%s\n",
netif->name[0],
netif->name[1],
(netif == netif_default)?" (Default)":"");
rt_kprintf("MTU: %d\n", netif->mtu);
rt_kprintf("MAC: ");
for (index = 0; index < netif->hwaddr_len; index ++)
rt_kprintf("%02x ", netif->hwaddr[index]);
rt_kprintf("\nFLAGS:");
if (netif->flags & NETIF_FLAG_UP) rt_kprintf(" UP");
else rt_kprintf(" DOWN");
if (netif->flags & NETIF_FLAG_LINK_UP) rt_kprintf(" LINK_UP");
else rt_kprintf(" LINK_DOWN");
if (netif->flags & NETIF_FLAG_DHCP) rt_kprintf(" DHCP");
if (netif->flags & NETIF_FLAG_POINTTOPOINT) rt_kprintf(" PPP");
if (netif->flags & NETIF_FLAG_ETHARP) rt_kprintf(" ETHARP");
if (netif->flags & NETIF_FLAG_IGMP) rt_kprintf(" IGMP");
rt_kprintf("\n");
rt_kprintf("ip address: %s\n", ipaddr_ntoa(&(netif->ip_addr)));
rt_kprintf("gw address: %s\n", ipaddr_ntoa(&(netif->gw)));
rt_kprintf("net mask : %s\n", ipaddr_ntoa(&(netif->netmask)));
rt_kprintf("\r\n");
netif = netif->next;
}
#if LWIP_DNS
{
struct ip_addr ip_addr;
for(index=0; index<DNS_MAX_SERVERS; index++)
{
ip_addr = dns_getserver(index);
rt_kprintf("dns server #%d: %s\n", index, ipaddr_ntoa(&(ip_addr)));
}
}
#endif /**< #if LWIP_DNS */
rt_exit_critical();
}
FINSH_FUNCTION_EXPORT(list_if, list network interface information);
#if LWIP_TCP
#include <lwip/tcp.h>
#include <lwip/tcp_impl.h>
void list_tcps(void)
{
rt_uint32_t num = 0;
struct tcp_pcb *pcb;
char local_ip_str[16];
char remote_ip_str[16];
extern struct tcp_pcb *tcp_active_pcbs;
extern union tcp_listen_pcbs_t tcp_listen_pcbs;
extern struct tcp_pcb *tcp_tw_pcbs;
extern const char *tcp_state_str[];
rt_enter_critical();
rt_kprintf("Active PCB states:\n");
for(pcb = tcp_active_pcbs; pcb != NULL; pcb = pcb->next)
{
strcpy(local_ip_str, ipaddr_ntoa(&(pcb->local_ip)));
strcpy(remote_ip_str, ipaddr_ntoa(&(pcb->remote_ip)));
rt_kprintf("#%d %s:%d <==> %s:%d snd_nxt 0x%08X rcv_nxt 0x%08X ",
num++,
local_ip_str,
pcb->local_port,
remote_ip_str,
pcb->remote_port,
pcb->snd_nxt,
pcb->rcv_nxt);
rt_kprintf("state: %s\n", tcp_state_str[pcb->state]);
}
rt_kprintf("Listen PCB states:\n");
num = 0;
for(pcb = (struct tcp_pcb *)tcp_listen_pcbs.pcbs; pcb != NULL; pcb = pcb->next)
{
rt_kprintf("#%d local port %d ", num++, pcb->local_port);
rt_kprintf("state: %s\n", tcp_state_str[pcb->state]);
}
rt_kprintf("TIME-WAIT PCB states:\n");
num = 0;
for(pcb = tcp_tw_pcbs; pcb != NULL; pcb = pcb->next)
{
strcpy(local_ip_str, ipaddr_ntoa(&(pcb->local_ip)));
strcpy(remote_ip_str, ipaddr_ntoa(&(pcb->remote_ip)));
rt_kprintf("#%d %s:%d <==> %s:%d snd_nxt 0x%08X rcv_nxt 0x%08X ",
num++,
local_ip_str,
pcb->local_port,
remote_ip_str,
pcb->remote_port,
pcb->snd_nxt,
pcb->rcv_nxt);
rt_kprintf("state: %s\n", tcp_state_str[pcb->state]);
}
rt_exit_critical();
}
FINSH_FUNCTION_EXPORT(list_tcps, list all of tcp connections);
#endif
#endif

2
components/net/lwip/SConscript
View File

@ -82,6 +82,6 @@ if GetDepend(['RT_LWIP_PPP']):
if GetDepend(['RT_USING_NETUTILS']):
src += Glob('./apps/*.c')
group = DefineGroup('LwIP', src, depend = ['RT_USING_LWIP'], CPPPATH = path)
group = DefineGroup('LwIP', src, depend = ['RT_USING_LWIP', 'RT_USING_LWIP140'], CPPPATH = path)
Return('group')