270 lines
9.3 KiB
C
270 lines
9.3 KiB
C
/*
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* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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*/
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#ifndef __LWIP_NETIF_H__
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#define __LWIP_NETIF_H__
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//#include "lwip/opt.h"
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#define ENABLE_LOOPBACK (LWIP_NETIF_LOOPBACK || LWIP_HAVE_LOOPIF)
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#include "lwip/err.h"
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#include "uip_ipaddr.h"
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//#include "lwip/inet.h"
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//#include "lwip/pbuf.h"
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#include "uip_pbuf.h"
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#include "uip-conf.h"
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#if LWIP_DHCP
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struct dhcp;
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#endif
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#if LWIP_AUTOIP
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struct autoip;
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Throughout this file, IP addresses are expected to be in
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* the same byte order as in IP_PCB. */
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/** must be the maximum of all used hardware address lengths
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across all types of interfaces in use */
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#define NETIF_MAX_HWADDR_LEN 6U
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/** TODO: define the use (where, when, whom) of netif flags */
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/** whether the network interface is 'up'. this is
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* a software flag used to control whether this network
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* interface is enabled and processes traffic.
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*/
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#define NETIF_FLAG_UP 0x01U
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/** if set, the netif has broadcast capability */
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#define NETIF_FLAG_BROADCAST 0x02U
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/** if set, the netif is one end of a point-to-point connection */
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#define NETIF_FLAG_POINTTOPOINT 0x04U
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/** if set, the interface is configured using DHCP */
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#define NETIF_FLAG_DHCP 0x08U
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/** if set, the interface has an active link
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* (set by the network interface driver) */
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#define NETIF_FLAG_LINK_UP 0x10U
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/** if set, the netif is an device using ARP */
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#define NETIF_FLAG_ETHARP 0x20U
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/** if set, the netif has IGMP capability */
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#define NETIF_FLAG_IGMP 0x40U
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/** Generic data structure used for all lwIP network interfaces.
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* The following fields should be filled in by the initialization
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* function for the device driver: hwaddr_len, hwaddr[], mtu, flags */
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struct ip_addr {
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rt_uint16_t uip_ip4addr_t[2];
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} ;
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struct netif {
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/** pointer to next in linked list */
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struct netif *next;
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/** IP address configuration in network byte order */
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struct ip_addr ip_addr;
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struct ip_addr netmask;
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struct ip_addr gw;
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/** This function is called by the network device driver
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* to pass a packet up the TCP/IP stack. */
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err_t (* input)(struct pbuf *p, struct netif *inp);
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/** This function is called by the IP module when it wants
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* to send a packet on the interface. This function typically
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* first resolves the hardware address, then sends the packet. */
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err_t (* output)(struct netif *netif, struct pbuf *p,
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struct ip_addr *ipaddr);
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/** This function is called by the ARP module when it wants
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* to send a packet on the interface. This function outputs
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* the pbuf as-is on the link medium. */
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err_t (* linkoutput)(struct netif *netif, struct pbuf *p);
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#if LWIP_NETIF_STATUS_CALLBACK
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/** This function is called when the netif state is set to up or down
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*/
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void (* status_callback)(struct netif *netif);
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#endif /* LWIP_NETIF_STATUS_CALLBACK */
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#if LWIP_NETIF_LINK_CALLBACK
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/** This function is called when the netif link is set to up or down
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*/
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void (* link_callback)(struct netif *netif);
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#endif /* LWIP_NETIF_LINK_CALLBACK */
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/** This field can be set by the device driver and could point
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* to state information for the device. */
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void *state;
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#if LWIP_DHCP
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/** the DHCP client state information for this netif */
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struct dhcp *dhcp;
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#endif /* LWIP_DHCP */
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#if LWIP_AUTOIP
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/** the AutoIP client state information for this netif */
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struct autoip *autoip;
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#endif
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#if LWIP_NETIF_HOSTNAME
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/* the hostname for this netif, NULL is a valid value */
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char* hostname;
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#endif /* LWIP_NETIF_HOSTNAME */
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/** maximum transfer unit (in bytes) */
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u16_t mtu;
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/** number of bytes used in hwaddr */
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u8_t hwaddr_len;
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/** link level hardware address of this interface */
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u8_t hwaddr[NETIF_MAX_HWADDR_LEN];
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/** flags (see NETIF_FLAG_ above) */
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u8_t flags;
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/** descriptive abbreviation */
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char name[2];
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/** number of this interface */
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u8_t num;
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#if LWIP_SNMP
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/** link type (from "snmp_ifType" enum from snmp.h) */
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u8_t link_type;
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/** (estimate) link speed */
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u32_t link_speed;
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/** timestamp at last change made (up/down) */
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u32_t ts;
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/** counters */
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u32_t ifinoctets;
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u32_t ifinucastpkts;
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u32_t ifinnucastpkts;
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u32_t ifindiscards;
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u32_t ifoutoctets;
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u32_t ifoutucastpkts;
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u32_t ifoutnucastpkts;
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u32_t ifoutdiscards;
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#endif /* LWIP_SNMP */
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#if LWIP_IGMP
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/* This function could be called to add or delete a entry in the multicast filter table of the ethernet MAC.*/
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err_t (*igmp_mac_filter)( struct netif *netif, struct ip_addr *group, u8_t action);
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#endif /* LWIP_IGMP */
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#if LWIP_NETIF_HWADDRHINT
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u8_t *addr_hint;
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#endif /* LWIP_NETIF_HWADDRHINT */
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#if ENABLE_LOOPBACK
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/* List of packets to be queued for ourselves. */
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struct pbuf *loop_first;
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struct pbuf *loop_last;
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#if LWIP_LOOPBACK_MAX_PBUFS
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u16_t loop_cnt_current;
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#endif /* LWIP_LOOPBACK_MAX_PBUFS */
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#endif /* ENABLE_LOOPBACK */
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};
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#if LWIP_SNMP
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#define NETIF_INIT_SNMP(netif, type, speed) \
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/* use "snmp_ifType" enum from snmp.h for "type", snmp_ifType_ethernet_csmacd by example */ \
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netif->link_type = type; \
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/* your link speed here (units: bits per second) */ \
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netif->link_speed = speed; \
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netif->ts = 0; \
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netif->ifinoctets = 0; \
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netif->ifinucastpkts = 0; \
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netif->ifinnucastpkts = 0; \
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netif->ifindiscards = 0; \
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netif->ifoutoctets = 0; \
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netif->ifoutucastpkts = 0; \
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netif->ifoutnucastpkts = 0; \
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netif->ifoutdiscards = 0
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#else /* LWIP_SNMP */
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#define NETIF_INIT_SNMP(netif, type, speed)
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#endif /* LWIP_SNMP */
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/** The list of network interfaces. */
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extern struct netif *netif_list;
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/** The default network interface. */
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extern struct netif *netif_default;
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#define netif_init() /* Compatibility define, not init needed. */
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struct netif *netif_add(struct netif *netif, struct ip_addr *ipaddr, struct ip_addr *netmask,
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struct ip_addr *gw,
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void *state,
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err_t (* init)(struct netif *netif),
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err_t (* input)(struct pbuf *p, struct netif *netif));
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void
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netif_set_addr(struct netif *netif,struct ip_addr *ipaddr, struct ip_addr *netmask,
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struct ip_addr *gw);
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void netif_remove(struct netif * netif);
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/* Returns a network interface given its name. The name is of the form
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"et0", where the first two letters are the "name" field in the
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netif structure, and the digit is in the num field in the same
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structure. */
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struct netif *netif_find(char *name);
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void netif_set_default(struct netif *netif);
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void netif_set_ipaddr(struct netif *netif, struct ip_addr *ipaddr);
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void netif_set_netmask(struct netif *netif, struct ip_addr *netmask);
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void netif_set_gw(struct netif *netif, struct ip_addr *gw);
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void netif_set_up(struct netif *netif);
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void netif_set_down(struct netif *netif);
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u8_t netif_is_up(struct netif *netif);
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#if LWIP_NETIF_STATUS_CALLBACK
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/*
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* Set callback to be called when interface is brought up/down
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*/
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void netif_set_status_callback(struct netif *netif, void (* status_callback)(struct netif *netif));
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#endif /* LWIP_NETIF_STATUS_CALLBACK */
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#if LWIP_NETIF_LINK_CALLBACK
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void netif_set_link_up(struct netif *netif);
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void netif_set_link_down(struct netif *netif);
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u8_t netif_is_link_up(struct netif *netif);
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/*
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* Set callback to be called when link is brought up/down
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*/
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void netif_set_link_callback(struct netif *netif, void (* link_callback)(struct netif *netif));
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#endif /* LWIP_NETIF_LINK_CALLBACK */
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#ifdef __cplusplus
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}
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#endif
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#if ENABLE_LOOPBACK
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err_t netif_loop_output(struct netif *netif, struct pbuf *p, struct ip_addr *dest_ip);
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void netif_poll(struct netif *netif);
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#if !LWIP_NETIF_LOOPBACK_MULTITHREADING
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void netif_poll_all(void);
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#endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */
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#endif /* ENABLE_LOOPBACK */
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#endif /* __LWIP_NETIF_H__ */
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