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/**
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* @file
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* lwIP network interface abstraction
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*
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*/
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/*
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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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#include "lwip/opt.h"
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#include "lwip/def.h"
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#include "lwip/ip_addr.h"
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#include "lwip/netif.h"
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#include "lwip/tcp_impl.h"
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#include "lwip/snmp.h"
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#include "lwip/igmp.h"
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#include "netif/etharp.h"
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#include "lwip/stats.h"
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#if ENABLE_LOOPBACK
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#include "lwip/sys.h"
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#if LWIP_NETIF_LOOPBACK_MULTITHREADING
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#include "lwip/tcpip.h"
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#endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */
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#endif /* ENABLE_LOOPBACK */
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#if LWIP_AUTOIP
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#include "lwip/autoip.h"
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#endif /* LWIP_AUTOIP */
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#if LWIP_DHCP
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#include "lwip/dhcp.h"
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#endif /* LWIP_DHCP */
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#if LWIP_NETIF_STATUS_CALLBACK
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#define NETIF_STATUS_CALLBACK(n) do{ if (n->status_callback) { (n->status_callback)(n); }}while(0)
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#else
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#define NETIF_STATUS_CALLBACK(n)
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#endif /* LWIP_NETIF_STATUS_CALLBACK */
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#if LWIP_NETIF_LINK_CALLBACK
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#define NETIF_LINK_CALLBACK(n) do{ if (n->link_callback) { (n->link_callback)(n); }}while(0)
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#else
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#define NETIF_LINK_CALLBACK(n)
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#endif /* LWIP_NETIF_LINK_CALLBACK */
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struct netif *netif_list;
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struct netif *netif_default;
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#if LWIP_HAVE_LOOPIF
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static struct netif loop_netif;
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/**
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* Initialize a lwip network interface structure for a loopback interface
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*
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* @param netif the lwip network interface structure for this loopif
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* @return ERR_OK if the loopif is initialized
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* ERR_MEM if private data couldn't be allocated
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*/
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static err_t
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netif_loopif_init(struct netif *netif)
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{
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/* initialize the snmp variables and counters inside the struct netif
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* ifSpeed: no assumption can be made!
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*/
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NETIF_INIT_SNMP(netif, snmp_ifType_softwareLoopback, 0);
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netif->name[0] = 'l';
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netif->name[1] = 'o';
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netif->output = netif_loop_output;
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return ERR_OK;
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}
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#endif /* LWIP_HAVE_LOOPIF */
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void
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netif_init(void)
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{
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#if LWIP_HAVE_LOOPIF
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ip_addr_t loop_ipaddr, loop_netmask, loop_gw;
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IP4_ADDR(&loop_gw, 127,0,0,1);
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IP4_ADDR(&loop_ipaddr, 127,0,0,1);
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IP4_ADDR(&loop_netmask, 255,0,0,0);
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#if NO_SYS
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netif_add(&loop_netif, &loop_ipaddr, &loop_netmask, &loop_gw, NULL, netif_loopif_init, ip_input);
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#else /* NO_SYS */
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netif_add(&loop_netif, &loop_ipaddr, &loop_netmask, &loop_gw, NULL, netif_loopif_init, tcpip_input);
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#endif /* NO_SYS */
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netif_set_up(&loop_netif);
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#endif /* LWIP_HAVE_LOOPIF */
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}
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/**
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* Add a network interface to the list of lwIP netifs.
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*
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* @param netif a pre-allocated netif structure
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* @param ipaddr IP address for the new netif
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* @param netmask network mask for the new netif
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* @param gw default gateway IP address for the new netif
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* @param state opaque data passed to the new netif
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* @param init callback function that initializes the interface
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* @param input callback function that is called to pass
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* ingress packets up in the protocol layer stack.
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*
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* @return netif, or NULL if failed.
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*/
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struct netif *
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netif_add(struct netif *netif, ip_addr_t *ipaddr, ip_addr_t *netmask,
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ip_addr_t *gw, void *state, netif_init_fn init, netif_input_fn input)
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{
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static u8_t netifnum = 0;
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LWIP_ASSERT("No init function given", init != NULL);
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/* reset new interface configuration state */
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ip_addr_set_zero(&netif->ip_addr);
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ip_addr_set_zero(&netif->netmask);
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ip_addr_set_zero(&netif->gw);
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netif->flags = 0;
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149
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#if LWIP_DHCP
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/* netif not under DHCP control by default */
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netif->dhcp = NULL;
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#endif /* LWIP_DHCP */
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153
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#if LWIP_AUTOIP
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/* netif not under AutoIP control by default */
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netif->autoip = NULL;
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#endif /* LWIP_AUTOIP */
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157
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#if LWIP_NETIF_STATUS_CALLBACK
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netif->status_callback = NULL;
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159
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#endif /* LWIP_NETIF_STATUS_CALLBACK */
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#if LWIP_NETIF_LINK_CALLBACK
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netif->link_callback = NULL;
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162
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#endif /* LWIP_NETIF_LINK_CALLBACK */
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163
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#if LWIP_IGMP
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netif->igmp_mac_filter = NULL;
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#endif /* LWIP_IGMP */
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#if ENABLE_LOOPBACK
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netif->loop_first = NULL;
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168
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netif->loop_last = NULL;
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169
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#endif /* ENABLE_LOOPBACK */
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170
|
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/* remember netif specific state information data */
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netif->state = state;
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netif->num = netifnum++;
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netif->input = input;
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#if LWIP_NETIF_HWADDRHINT
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netif->addr_hint = NULL;
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177
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#endif /* LWIP_NETIF_HWADDRHINT*/
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| mbed714 |
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178
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#if ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS
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179
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netif->loop_cnt_current = 0;
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180
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#endif /* ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS */
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181
|
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netif_set_addr(netif, ipaddr, netmask, gw);
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183
|
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184
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/* call user specified initialization function for netif */
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185
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if (init(netif) != ERR_OK) {
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186
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return NULL;
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}
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|
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189
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/* add this netif to the list */
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netif->next = netif_list;
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netif_list = netif;
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192
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snmp_inc_iflist();
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193
|
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194
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#if LWIP_IGMP
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195
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/* start IGMP processing */
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196
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if (netif->flags & NETIF_FLAG_IGMP) {
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197
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igmp_start(netif);
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198
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}
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199
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#endif /* LWIP_IGMP */
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200
|
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201
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LWIP_DEBUGF(NETIF_DEBUG, ("netif: added interface %c%c IP addr ",
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202
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netif->name[0], netif->name[1]));
|
| mbed714 |
0:d616ece2d859
|
203
|
ip_addr_debug_print(NETIF_DEBUG, ipaddr);
|
| mbed714 |
0:d616ece2d859
|
204
|
LWIP_DEBUGF(NETIF_DEBUG, (" netmask "));
|
| mbed714 |
0:d616ece2d859
|
205
|
ip_addr_debug_print(NETIF_DEBUG, netmask);
|
| mbed714 |
0:d616ece2d859
|
206
|
LWIP_DEBUGF(NETIF_DEBUG, (" gw "));
|
| mbed714 |
0:d616ece2d859
|
207
|
ip_addr_debug_print(NETIF_DEBUG, gw);
|
| mbed714 |
0:d616ece2d859
|
208
|
LWIP_DEBUGF(NETIF_DEBUG, ("\n"));
|
| mbed714 |
0:d616ece2d859
|
209
|
return netif;
|
| mbed714 |
0:d616ece2d859
|
210
|
}
|
| mbed714 |
0:d616ece2d859
|
211
|
|
| mbed714 |
0:d616ece2d859
|
212
|
/**
|
| mbed714 |
0:d616ece2d859
|
213
|
* Change IP address configuration for a network interface (including netmask
|
| mbed714 |
0:d616ece2d859
|
214
|
* and default gateway).
|
| mbed714 |
0:d616ece2d859
|
215
|
*
|
| mbed714 |
0:d616ece2d859
|
216
|
* @param netif the network interface to change
|
| mbed714 |
0:d616ece2d859
|
217
|
* @param ipaddr the new IP address
|
| mbed714 |
0:d616ece2d859
|
218
|
* @param netmask the new netmask
|
| mbed714 |
0:d616ece2d859
|
219
|
* @param gw the new default gateway
|
| mbed714 |
0:d616ece2d859
|
220
|
*/
|
| mbed714 |
0:d616ece2d859
|
221
|
void
|
| mbed714 |
0:d616ece2d859
|
222
|
netif_set_addr(struct netif *netif, ip_addr_t *ipaddr, ip_addr_t *netmask,
|
| mbed714 |
0:d616ece2d859
|
223
|
ip_addr_t *gw)
|
| mbed714 |
0:d616ece2d859
|
224
|
{
|
| mbed714 |
0:d616ece2d859
|
225
|
netif_set_ipaddr(netif, ipaddr);
|
| mbed714 |
0:d616ece2d859
|
226
|
netif_set_netmask(netif, netmask);
|
| mbed714 |
0:d616ece2d859
|
227
|
netif_set_gw(netif, gw);
|
| mbed714 |
0:d616ece2d859
|
228
|
}
|
| mbed714 |
0:d616ece2d859
|
229
|
|
| mbed714 |
0:d616ece2d859
|
230
|
/**
|
| mbed714 |
0:d616ece2d859
|
231
|
* Remove a network interface from the list of lwIP netifs.
|
| mbed714 |
0:d616ece2d859
|
232
|
*
|
| mbed714 |
0:d616ece2d859
|
233
|
* @param netif the network interface to remove
|
| mbed714 |
0:d616ece2d859
|
234
|
*/
|
| mbed714 |
0:d616ece2d859
|
235
|
void
|
| mbed714 |
0:d616ece2d859
|
236
|
netif_remove(struct netif *netif)
|
| mbed714 |
0:d616ece2d859
|
237
|
{
|
| mbed714 |
0:d616ece2d859
|
238
|
if (netif == NULL) {
|
| mbed714 |
0:d616ece2d859
|
239
|
return;
|
| mbed714 |
0:d616ece2d859
|
240
|
}
|
| mbed714 |
0:d616ece2d859
|
241
|
|
| mbed714 |
0:d616ece2d859
|
242
|
#if LWIP_IGMP
|
| mbed714 |
0:d616ece2d859
|
243
|
/* stop IGMP processing */
|
| mbed714 |
0:d616ece2d859
|
244
|
if (netif->flags & NETIF_FLAG_IGMP) {
|
| mbed714 |
0:d616ece2d859
|
245
|
igmp_stop(netif);
|
| mbed714 |
0:d616ece2d859
|
246
|
}
|
| mbed714 |
0:d616ece2d859
|
247
|
#endif /* LWIP_IGMP */
|
| mbed714 |
0:d616ece2d859
|
248
|
if (netif_is_up(netif)) {
|
| mbed714 |
0:d616ece2d859
|
249
|
/* set netif down before removing (call callback function) */
|
| mbed714 |
0:d616ece2d859
|
250
|
netif_set_down(netif);
|
| mbed714 |
0:d616ece2d859
|
251
|
}
|
| mbed714 |
0:d616ece2d859
|
252
|
|
| mbed714 |
0:d616ece2d859
|
253
|
snmp_delete_ipaddridx_tree(netif);
|
| mbed714 |
0:d616ece2d859
|
254
|
|
| mbed714 |
0:d616ece2d859
|
255
|
/* is it the first netif? */
|
| mbed714 |
0:d616ece2d859
|
256
|
if (netif_list == netif) {
|
| mbed714 |
0:d616ece2d859
|
257
|
netif_list = netif->next;
|
| mbed714 |
0:d616ece2d859
|
258
|
} else {
|
| mbed714 |
0:d616ece2d859
|
259
|
/* look for netif further down the list */
|
| mbed714 |
0:d616ece2d859
|
260
|
struct netif * tmpNetif;
|
| mbed714 |
0:d616ece2d859
|
261
|
for (tmpNetif = netif_list; tmpNetif != NULL; tmpNetif = tmpNetif->next) {
|
| mbed714 |
0:d616ece2d859
|
262
|
if (tmpNetif->next == netif) {
|
| mbed714 |
0:d616ece2d859
|
263
|
tmpNetif->next = netif->next;
|
| mbed714 |
0:d616ece2d859
|
264
|
break;
|
| mbed714 |
0:d616ece2d859
|
265
|
}
|
| mbed714 |
0:d616ece2d859
|
266
|
}
|
| mbed714 |
0:d616ece2d859
|
267
|
if (tmpNetif == NULL)
|
| mbed714 |
0:d616ece2d859
|
268
|
return; /* we didn't find any netif today */
|
| mbed714 |
0:d616ece2d859
|
269
|
}
|
| mbed714 |
0:d616ece2d859
|
270
|
snmp_dec_iflist();
|
| mbed714 |
0:d616ece2d859
|
271
|
/* this netif is default? */
|
| mbed714 |
0:d616ece2d859
|
272
|
if (netif_default == netif) {
|
| mbed714 |
0:d616ece2d859
|
273
|
/* reset default netif */
|
| mbed714 |
0:d616ece2d859
|
274
|
netif_set_default(NULL);
|
| mbed714 |
0:d616ece2d859
|
275
|
}
|
| mbed714 |
0:d616ece2d859
|
276
|
LWIP_DEBUGF( NETIF_DEBUG, ("netif_remove: removed netif\n") );
|
| mbed714 |
0:d616ece2d859
|
277
|
}
|
| mbed714 |
0:d616ece2d859
|
278
|
|
| mbed714 |
0:d616ece2d859
|
279
|
/**
|
| mbed714 |
0:d616ece2d859
|
280
|
* Find a network interface by searching for its name
|
| mbed714 |
0:d616ece2d859
|
281
|
*
|
| mbed714 |
0:d616ece2d859
|
282
|
* @param name the name of the netif (like netif->name) plus concatenated number
|
| mbed714 |
0:d616ece2d859
|
283
|
* in ascii representation (e.g. 'en0')
|
| mbed714 |
0:d616ece2d859
|
284
|
*/
|
| mbed714 |
0:d616ece2d859
|
285
|
struct netif *
|
| mbed714 |
0:d616ece2d859
|
286
|
netif_find(char *name)
|
| mbed714 |
0:d616ece2d859
|
287
|
{
|
| mbed714 |
0:d616ece2d859
|
288
|
struct netif *netif;
|
| mbed714 |
0:d616ece2d859
|
289
|
u8_t num;
|
| mbed714 |
0:d616ece2d859
|
290
|
|
| mbed714 |
0:d616ece2d859
|
291
|
if (name == NULL) {
|
| mbed714 |
0:d616ece2d859
|
292
|
return NULL;
|
| mbed714 |
0:d616ece2d859
|
293
|
}
|
| mbed714 |
0:d616ece2d859
|
294
|
|
| mbed714 |
0:d616ece2d859
|
295
|
num = name[2] - '0';
|
| mbed714 |
0:d616ece2d859
|
296
|
|
| mbed714 |
0:d616ece2d859
|
297
|
for(netif = netif_list; netif != NULL; netif = netif->next) {
|
| mbed714 |
0:d616ece2d859
|
298
|
if (num == netif->num &&
|
| mbed714 |
0:d616ece2d859
|
299
|
name[0] == netif->name[0] &&
|
| mbed714 |
0:d616ece2d859
|
300
|
name[1] == netif->name[1]) {
|
| mbed714 |
0:d616ece2d859
|
301
|
LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: found %c%c\n", name[0], name[1]));
|
| mbed714 |
0:d616ece2d859
|
302
|
return netif;
|
| mbed714 |
0:d616ece2d859
|
303
|
}
|
| mbed714 |
0:d616ece2d859
|
304
|
}
|
| mbed714 |
0:d616ece2d859
|
305
|
LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: didn't find %c%c\n", name[0], name[1]));
|
| mbed714 |
0:d616ece2d859
|
306
|
return NULL;
|
| mbed714 |
0:d616ece2d859
|
307
|
}
|
| mbed714 |
0:d616ece2d859
|
308
|
|
| mbed714 |
0:d616ece2d859
|
309
|
/**
|
| mbed714 |
0:d616ece2d859
|
310
|
* Change the IP address of a network interface
|
| mbed714 |
0:d616ece2d859
|
311
|
*
|
| mbed714 |
0:d616ece2d859
|
312
|
* @param netif the network interface to change
|
| mbed714 |
0:d616ece2d859
|
313
|
* @param ipaddr the new IP address
|
| mbed714 |
0:d616ece2d859
|
314
|
*
|
| mbed714 |
0:d616ece2d859
|
315
|
* @note call netif_set_addr() if you also want to change netmask and
|
| mbed714 |
0:d616ece2d859
|
316
|
* default gateway
|
| mbed714 |
0:d616ece2d859
|
317
|
*/
|
| mbed714 |
0:d616ece2d859
|
318
|
void
|
| mbed714 |
0:d616ece2d859
|
319
|
netif_set_ipaddr(struct netif *netif, ip_addr_t *ipaddr)
|
| mbed714 |
0:d616ece2d859
|
320
|
{
|
| mbed714 |
0:d616ece2d859
|
321
|
/* TODO: Handling of obsolete pcbs */
|
| mbed714 |
0:d616ece2d859
|
322
|
/* See: http://mail.gnu.org/archive/html/lwip-users/2003-03/msg00118.html */
|
| mbed714 |
0:d616ece2d859
|
323
|
#if LWIP_TCP
|
| mbed714 |
0:d616ece2d859
|
324
|
struct tcp_pcb *pcb;
|
| mbed714 |
0:d616ece2d859
|
325
|
struct tcp_pcb_listen *lpcb;
|
| mbed714 |
0:d616ece2d859
|
326
|
|
| mbed714 |
0:d616ece2d859
|
327
|
/* address is actually being changed? */
|
| mbed714 |
0:d616ece2d859
|
328
|
if ((ip_addr_cmp(ipaddr, &(netif->ip_addr))) == 0) {
|
| mbed714 |
0:d616ece2d859
|
329
|
/* extern struct tcp_pcb *tcp_active_pcbs; defined by tcp.h */
|
| mbed714 |
0:d616ece2d859
|
330
|
LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_set_ipaddr: netif address being changed\n"));
|
| mbed714 |
0:d616ece2d859
|
331
|
pcb = tcp_active_pcbs;
|
| mbed714 |
0:d616ece2d859
|
332
|
while (pcb != NULL) {
|
| mbed714 |
0:d616ece2d859
|
333
|
/* PCB bound to current local interface address? */
|
| mbed714 |
0:d616ece2d859
|
334
|
if (ip_addr_cmp(&(pcb->local_ip), &(netif->ip_addr))
|
| mbed714 |
0:d616ece2d859
|
335
|
#if LWIP_AUTOIP
|
| mbed714 |
0:d616ece2d859
|
336
|
/* connections to link-local addresses must persist (RFC3927 ch. 1.9) */
|
| mbed714 |
0:d616ece2d859
|
337
|
&& !ip_addr_islinklocal(&(pcb->local_ip))
|
| mbed714 |
0:d616ece2d859
|
338
|
#endif /* LWIP_AUTOIP */
|
| mbed714 |
0:d616ece2d859
|
339
|
) {
|
| mbed714 |
0:d616ece2d859
|
340
|
/* this connection must be aborted */
|
| mbed714 |
0:d616ece2d859
|
341
|
struct tcp_pcb *next = pcb->next;
|
| mbed714 |
0:d616ece2d859
|
342
|
LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_set_ipaddr: aborting TCP pcb %p\n", (void *)pcb));
|
| mbed714 |
0:d616ece2d859
|
343
|
tcp_abort(pcb);
|
| mbed714 |
0:d616ece2d859
|
344
|
pcb = next;
|
| mbed714 |
0:d616ece2d859
|
345
|
} else {
|
| mbed714 |
0:d616ece2d859
|
346
|
pcb = pcb->next;
|
| mbed714 |
0:d616ece2d859
|
347
|
}
|
| mbed714 |
0:d616ece2d859
|
348
|
}
|
| mbed714 |
0:d616ece2d859
|
349
|
for (lpcb = tcp_listen_pcbs.listen_pcbs; lpcb != NULL; lpcb = lpcb->next) {
|
| mbed714 |
0:d616ece2d859
|
350
|
/* PCB bound to current local interface address? */
|
| mbed714 |
0:d616ece2d859
|
351
|
if ((!(ip_addr_isany(&(lpcb->local_ip)))) &&
|
| mbed714 |
0:d616ece2d859
|
352
|
(ip_addr_cmp(&(lpcb->local_ip), &(netif->ip_addr)))) {
|
| mbed714 |
0:d616ece2d859
|
353
|
/* The PCB is listening to the old ipaddr and
|
| mbed714 |
0:d616ece2d859
|
354
|
* is set to listen to the new one instead */
|
| mbed714 |
0:d616ece2d859
|
355
|
ip_addr_set(&(lpcb->local_ip), ipaddr);
|
| mbed714 |
0:d616ece2d859
|
356
|
}
|
| mbed714 |
0:d616ece2d859
|
357
|
}
|
| mbed714 |
0:d616ece2d859
|
358
|
}
|
| mbed714 |
0:d616ece2d859
|
359
|
#endif
|
| mbed714 |
0:d616ece2d859
|
360
|
snmp_delete_ipaddridx_tree(netif);
|
| mbed714 |
0:d616ece2d859
|
361
|
snmp_delete_iprteidx_tree(0,netif);
|
| mbed714 |
0:d616ece2d859
|
362
|
/* set new IP address to netif */
|
| mbed714 |
0:d616ece2d859
|
363
|
ip_addr_set(&(netif->ip_addr), ipaddr);
|
| mbed714 |
0:d616ece2d859
|
364
|
snmp_insert_ipaddridx_tree(netif);
|
| mbed714 |
0:d616ece2d859
|
365
|
snmp_insert_iprteidx_tree(0,netif);
|
| mbed714 |
0:d616ece2d859
|
366
|
|
| mbed714 |
0:d616ece2d859
|
367
|
LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("netif: IP address of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n",
|
| mbed714 |
0:d616ece2d859
|
368
|
netif->name[0], netif->name[1],
|
| mbed714 |
0:d616ece2d859
|
369
|
ip4_addr1_16(&netif->ip_addr),
|
| mbed714 |
0:d616ece2d859
|
370
|
ip4_addr2_16(&netif->ip_addr),
|
| mbed714 |
0:d616ece2d859
|
371
|
ip4_addr3_16(&netif->ip_addr),
|
| mbed714 |
0:d616ece2d859
|
372
|
ip4_addr4_16(&netif->ip_addr)));
|
| mbed714 |
0:d616ece2d859
|
373
|
}
|
| mbed714 |
0:d616ece2d859
|
374
|
|
| mbed714 |
0:d616ece2d859
|
375
|
/**
|
| mbed714 |
0:d616ece2d859
|
376
|
* Change the default gateway for a network interface
|
| mbed714 |
0:d616ece2d859
|
377
|
*
|
| mbed714 |
0:d616ece2d859
|
378
|
* @param netif the network interface to change
|
| mbed714 |
0:d616ece2d859
|
379
|
* @param gw the new default gateway
|
| mbed714 |
0:d616ece2d859
|
380
|
*
|
| mbed714 |
0:d616ece2d859
|
381
|
* @note call netif_set_addr() if you also want to change ip address and netmask
|
| mbed714 |
0:d616ece2d859
|
382
|
*/
|
| mbed714 |
0:d616ece2d859
|
383
|
void
|
| mbed714 |
0:d616ece2d859
|
384
|
netif_set_gw(struct netif *netif, ip_addr_t *gw)
|
| mbed714 |
0:d616ece2d859
|
385
|
{
|
| mbed714 |
0:d616ece2d859
|
386
|
ip_addr_set(&(netif->gw), gw);
|
| mbed714 |
0:d616ece2d859
|
387
|
LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("netif: GW address of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n",
|
| mbed714 |
0:d616ece2d859
|
388
|
netif->name[0], netif->name[1],
|
| mbed714 |
0:d616ece2d859
|
389
|
ip4_addr1_16(&netif->gw),
|
| mbed714 |
0:d616ece2d859
|
390
|
ip4_addr2_16(&netif->gw),
|
| mbed714 |
0:d616ece2d859
|
391
|
ip4_addr3_16(&netif->gw),
|
| mbed714 |
0:d616ece2d859
|
392
|
ip4_addr4_16(&netif->gw)));
|
| mbed714 |
0:d616ece2d859
|
393
|
}
|
| mbed714 |
0:d616ece2d859
|
394
|
|
| mbed714 |
0:d616ece2d859
|
395
|
/**
|
| mbed714 |
0:d616ece2d859
|
396
|
* Change the netmask of a network interface
|
| mbed714 |
0:d616ece2d859
|
397
|
*
|
| mbed714 |
0:d616ece2d859
|
398
|
* @param netif the network interface to change
|
| mbed714 |
0:d616ece2d859
|
399
|
* @param netmask the new netmask
|
| mbed714 |
0:d616ece2d859
|
400
|
*
|
| mbed714 |
0:d616ece2d859
|
401
|
* @note call netif_set_addr() if you also want to change ip address and
|
| mbed714 |
0:d616ece2d859
|
402
|
* default gateway
|
| mbed714 |
0:d616ece2d859
|
403
|
*/
|
| mbed714 |
0:d616ece2d859
|
404
|
void
|
| mbed714 |
0:d616ece2d859
|
405
|
netif_set_netmask(struct netif *netif, ip_addr_t *netmask)
|
| mbed714 |
0:d616ece2d859
|
406
|
{
|
| mbed714 |
0:d616ece2d859
|
407
|
snmp_delete_iprteidx_tree(0, netif);
|
| mbed714 |
0:d616ece2d859
|
408
|
/* set new netmask to netif */
|
| mbed714 |
0:d616ece2d859
|
409
|
ip_addr_set(&(netif->netmask), netmask);
|
| mbed714 |
0:d616ece2d859
|
410
|
snmp_insert_iprteidx_tree(0, netif);
|
| mbed714 |
0:d616ece2d859
|
411
|
LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("netif: netmask of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n",
|
| mbed714 |
0:d616ece2d859
|
412
|
netif->name[0], netif->name[1],
|
| mbed714 |
0:d616ece2d859
|
413
|
ip4_addr1_16(&netif->netmask),
|
| mbed714 |
0:d616ece2d859
|
414
|
ip4_addr2_16(&netif->netmask),
|
| mbed714 |
0:d616ece2d859
|
415
|
ip4_addr3_16(&netif->netmask),
|
| mbed714 |
0:d616ece2d859
|
416
|
ip4_addr4_16(&netif->netmask)));
|
| mbed714 |
0:d616ece2d859
|
417
|
}
|
| mbed714 |
0:d616ece2d859
|
418
|
|
| mbed714 |
0:d616ece2d859
|
419
|
/**
|
| mbed714 |
0:d616ece2d859
|
420
|
* Set a network interface as the default network interface
|
| mbed714 |
0:d616ece2d859
|
421
|
* (used to output all packets for which no specific route is found)
|
| mbed714 |
0:d616ece2d859
|
422
|
*
|
| mbed714 |
0:d616ece2d859
|
423
|
* @param netif the default network interface
|
| mbed714 |
0:d616ece2d859
|
424
|
*/
|
| mbed714 |
0:d616ece2d859
|
425
|
void
|
| mbed714 |
0:d616ece2d859
|
426
|
netif_set_default(struct netif *netif)
|
| mbed714 |
0:d616ece2d859
|
427
|
{
|
| mbed714 |
0:d616ece2d859
|
428
|
if (netif == NULL) {
|
| mbed714 |
0:d616ece2d859
|
429
|
/* remove default route */
|
| mbed714 |
0:d616ece2d859
|
430
|
snmp_delete_iprteidx_tree(1, netif);
|
| mbed714 |
0:d616ece2d859
|
431
|
} else {
|
| mbed714 |
0:d616ece2d859
|
432
|
/* install default route */
|
| mbed714 |
0:d616ece2d859
|
433
|
snmp_insert_iprteidx_tree(1, netif);
|
| mbed714 |
0:d616ece2d859
|
434
|
}
|
| mbed714 |
0:d616ece2d859
|
435
|
netif_default = netif;
|
| mbed714 |
0:d616ece2d859
|
436
|
LWIP_DEBUGF(NETIF_DEBUG, ("netif: setting default interface %c%c\n",
|
| mbed714 |
0:d616ece2d859
|
437
|
netif ? netif->name[0] : '\'', netif ? netif->name[1] : '\''));
|
| mbed714 |
0:d616ece2d859
|
438
|
}
|
| mbed714 |
0:d616ece2d859
|
439
|
|
| mbed714 |
0:d616ece2d859
|
440
|
/**
|
| mbed714 |
0:d616ece2d859
|
441
|
* Bring an interface up, available for processing
|
| mbed714 |
0:d616ece2d859
|
442
|
* traffic.
|
| mbed714 |
0:d616ece2d859
|
443
|
*
|
| mbed714 |
0:d616ece2d859
|
444
|
* @note: Enabling DHCP on a down interface will make it come
|
| mbed714 |
0:d616ece2d859
|
445
|
* up once configured.
|
| mbed714 |
0:d616ece2d859
|
446
|
*
|
| mbed714 |
0:d616ece2d859
|
447
|
* @see dhcp_start()
|
| mbed714 |
0:d616ece2d859
|
448
|
*/
|
| mbed714 |
0:d616ece2d859
|
449
|
void netif_set_up(struct netif *netif)
|
| mbed714 |
0:d616ece2d859
|
450
|
{
|
| mbed714 |
0:d616ece2d859
|
451
|
if (!(netif->flags & NETIF_FLAG_UP)) {
|
| mbed714 |
0:d616ece2d859
|
452
|
netif->flags |= NETIF_FLAG_UP;
|
| mbed714 |
0:d616ece2d859
|
453
|
|
| mbed714 |
0:d616ece2d859
|
454
|
#if LWIP_SNMP
|
| mbed714 |
0:d616ece2d859
|
455
|
snmp_get_sysuptime(&netif->ts);
|
| mbed714 |
0:d616ece2d859
|
456
|
#endif /* LWIP_SNMP */
|
| mbed714 |
0:d616ece2d859
|
457
|
|
| mbed714 |
0:d616ece2d859
|
458
|
NETIF_STATUS_CALLBACK(netif);
|
| mbed714 |
0:d616ece2d859
|
459
|
|
| mbed714 |
0:d616ece2d859
|
460
|
if (netif->flags & NETIF_FLAG_LINK_UP) {
|
| mbed714 |
0:d616ece2d859
|
461
|
#if LWIP_ARP
|
| mbed714 |
0:d616ece2d859
|
462
|
/* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */
|
| mbed714 |
0:d616ece2d859
|
463
|
if (netif->flags & (NETIF_FLAG_ETHARP)) {
|
| mbed714 |
0:d616ece2d859
|
464
|
etharp_gratuitous(netif);
|
| mbed714 |
0:d616ece2d859
|
465
|
}
|
| mbed714 |
0:d616ece2d859
|
466
|
#endif /* LWIP_ARP */
|
| mbed714 |
0:d616ece2d859
|
467
|
|
| mbed714 |
0:d616ece2d859
|
468
|
#if LWIP_IGMP
|
| mbed714 |
0:d616ece2d859
|
469
|
/* resend IGMP memberships */
|
| mbed714 |
0:d616ece2d859
|
470
|
if (netif->flags & NETIF_FLAG_IGMP) {
|
| mbed714 |
0:d616ece2d859
|
471
|
igmp_report_groups( netif);
|
| mbed714 |
0:d616ece2d859
|
472
|
}
|
| mbed714 |
0:d616ece2d859
|
473
|
#endif /* LWIP_IGMP */
|
| mbed714 |
0:d616ece2d859
|
474
|
}
|
| mbed714 |
0:d616ece2d859
|
475
|
}
|
| mbed714 |
0:d616ece2d859
|
476
|
}
|
| mbed714 |
0:d616ece2d859
|
477
|
|
| mbed714 |
0:d616ece2d859
|
478
|
/**
|
| mbed714 |
0:d616ece2d859
|
479
|
* Bring an interface down, disabling any traffic processing.
|
| mbed714 |
0:d616ece2d859
|
480
|
*
|
| mbed714 |
0:d616ece2d859
|
481
|
* @note: Enabling DHCP on a down interface will make it come
|
| mbed714 |
0:d616ece2d859
|
482
|
* up once configured.
|
| mbed714 |
0:d616ece2d859
|
483
|
*
|
| mbed714 |
0:d616ece2d859
|
484
|
* @see dhcp_start()
|
| mbed714 |
0:d616ece2d859
|
485
|
*/
|
| mbed714 |
0:d616ece2d859
|
486
|
void netif_set_down(struct netif *netif)
|
| mbed714 |
0:d616ece2d859
|
487
|
{
|
| mbed714 |
0:d616ece2d859
|
488
|
if (netif->flags & NETIF_FLAG_UP) {
|
| mbed714 |
0:d616ece2d859
|
489
|
netif->flags &= ~NETIF_FLAG_UP;
|
| mbed714 |
0:d616ece2d859
|
490
|
#if LWIP_SNMP
|
| mbed714 |
0:d616ece2d859
|
491
|
snmp_get_sysuptime(&netif->ts);
|
| mbed714 |
0:d616ece2d859
|
492
|
#endif
|
| mbed714 |
0:d616ece2d859
|
493
|
|
| mbed714 |
0:d616ece2d859
|
494
|
NETIF_STATUS_CALLBACK(netif);
|
| mbed714 |
0:d616ece2d859
|
495
|
}
|
| mbed714 |
0:d616ece2d859
|
496
|
}
|
| mbed714 |
0:d616ece2d859
|
497
|
|
| mbed714 |
0:d616ece2d859
|
498
|
#if LWIP_NETIF_STATUS_CALLBACK
|
| mbed714 |
0:d616ece2d859
|
499
|
/**
|
| mbed714 |
0:d616ece2d859
|
500
|
* Set callback to be called when interface is brought up/down
|
| mbed714 |
0:d616ece2d859
|
501
|
*/
|
| mbed714 |
0:d616ece2d859
|
502
|
void netif_set_status_callback(struct netif *netif, netif_status_callback_fn status_callback)
|
| mbed714 |
0:d616ece2d859
|
503
|
{
|
| mbed714 |
0:d616ece2d859
|
504
|
if (netif) {
|
| mbed714 |
0:d616ece2d859
|
505
|
netif->status_callback = status_callback;
|
| mbed714 |
0:d616ece2d859
|
506
|
}
|
| mbed714 |
0:d616ece2d859
|
507
|
}
|
| mbed714 |
0:d616ece2d859
|
508
|
#endif /* LWIP_NETIF_STATUS_CALLBACK */
|
| mbed714 |
0:d616ece2d859
|
509
|
|
| mbed714 |
0:d616ece2d859
|
510
|
/**
|
| mbed714 |
0:d616ece2d859
|
511
|
* Called by a driver when its link goes up
|
| mbed714 |
0:d616ece2d859
|
512
|
*/
|
| mbed714 |
0:d616ece2d859
|
513
|
void netif_set_link_up(struct netif *netif )
|
| mbed714 |
0:d616ece2d859
|
514
|
{
|
| mbed714 |
0:d616ece2d859
|
515
|
if (!(netif->flags & NETIF_FLAG_LINK_UP)) {
|
| mbed714 |
0:d616ece2d859
|
516
|
netif->flags |= NETIF_FLAG_LINK_UP;
|
| mbed714 |
0:d616ece2d859
|
517
|
|
| mbed714 |
0:d616ece2d859
|
518
|
#if LWIP_DHCP
|
| mbed714 |
0:d616ece2d859
|
519
|
if (netif->dhcp) {
|
| mbed714 |
0:d616ece2d859
|
520
|
dhcp_network_changed(netif);
|
| mbed714 |
0:d616ece2d859
|
521
|
}
|
| mbed714 |
0:d616ece2d859
|
522
|
#endif /* LWIP_DHCP */
|
| mbed714 |
0:d616ece2d859
|
523
|
|
| mbed714 |
0:d616ece2d859
|
524
|
#if LWIP_AUTOIP
|
| mbed714 |
0:d616ece2d859
|
525
|
if (netif->autoip) {
|
| mbed714 |
0:d616ece2d859
|
526
|
autoip_network_changed(netif);
|
| mbed714 |
0:d616ece2d859
|
527
|
}
|
| mbed714 |
0:d616ece2d859
|
528
|
#endif /* LWIP_AUTOIP */
|
| mbed714 |
0:d616ece2d859
|
529
|
|
| mbed714 |
0:d616ece2d859
|
530
|
if (netif->flags & NETIF_FLAG_UP) {
|
| mbed714 |
0:d616ece2d859
|
531
|
#if LWIP_ARP
|
| mbed714 |
0:d616ece2d859
|
532
|
/* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */
|
| mbed714 |
0:d616ece2d859
|
533
|
if (netif->flags & NETIF_FLAG_ETHARP) {
|
| mbed714 |
0:d616ece2d859
|
534
|
etharp_gratuitous(netif);
|
| mbed714 |
0:d616ece2d859
|
535
|
}
|
| mbed714 |
0:d616ece2d859
|
536
|
#endif /* LWIP_ARP */
|
| mbed714 |
0:d616ece2d859
|
537
|
|
| mbed714 |
0:d616ece2d859
|
538
|
#if LWIP_IGMP
|
| mbed714 |
0:d616ece2d859
|
539
|
/* resend IGMP memberships */
|
| mbed714 |
0:d616ece2d859
|
540
|
if (netif->flags & NETIF_FLAG_IGMP) {
|
| mbed714 |
0:d616ece2d859
|
541
|
igmp_report_groups( netif);
|
| mbed714 |
0:d616ece2d859
|
542
|
}
|
| mbed714 |
0:d616ece2d859
|
543
|
#endif /* LWIP_IGMP */
|
| mbed714 |
0:d616ece2d859
|
544
|
}
|
| mbed714 |
0:d616ece2d859
|
545
|
NETIF_LINK_CALLBACK(netif);
|
| mbed714 |
0:d616ece2d859
|
546
|
}
|
| mbed714 |
0:d616ece2d859
|
547
|
}
|
| mbed714 |
0:d616ece2d859
|
548
|
|
| mbed714 |
0:d616ece2d859
|
549
|
/**
|
| mbed714 |
0:d616ece2d859
|
550
|
* Called by a driver when its link goes down
|
| mbed714 |
0:d616ece2d859
|
551
|
*/
|
| mbed714 |
0:d616ece2d859
|
552
|
void netif_set_link_down(struct netif *netif )
|
| mbed714 |
0:d616ece2d859
|
553
|
{
|
| mbed714 |
0:d616ece2d859
|
554
|
if (netif->flags & NETIF_FLAG_LINK_UP) {
|
| mbed714 |
0:d616ece2d859
|
555
|
netif->flags &= ~NETIF_FLAG_LINK_UP;
|
| mbed714 |
0:d616ece2d859
|
556
|
NETIF_LINK_CALLBACK(netif);
|
| mbed714 |
0:d616ece2d859
|
557
|
}
|
| mbed714 |
0:d616ece2d859
|
558
|
}
|
| mbed714 |
0:d616ece2d859
|
559
|
|
| mbed714 |
0:d616ece2d859
|
560
|
#if LWIP_NETIF_LINK_CALLBACK
|
| mbed714 |
0:d616ece2d859
|
561
|
/**
|
| mbed714 |
0:d616ece2d859
|
562
|
* Set callback to be called when link is brought up/down
|
| mbed714 |
0:d616ece2d859
|
563
|
*/
|
| mbed714 |
0:d616ece2d859
|
564
|
void netif_set_link_callback(struct netif *netif, netif_status_callback_fn link_callback)
|
| mbed714 |
0:d616ece2d859
|
565
|
{
|
| mbed714 |
0:d616ece2d859
|
566
|
if (netif) {
|
| mbed714 |
0:d616ece2d859
|
567
|
netif->link_callback = link_callback;
|
| mbed714 |
0:d616ece2d859
|
568
|
}
|
| mbed714 |
0:d616ece2d859
|
569
|
}
|
| mbed714 |
0:d616ece2d859
|
570
|
#endif /* LWIP_NETIF_LINK_CALLBACK */
|
| mbed714 |
0:d616ece2d859
|
571
|
|
| mbed714 |
0:d616ece2d859
|
572
|
#if ENABLE_LOOPBACK
|
| mbed714 |
0:d616ece2d859
|
573
|
/**
|
| mbed714 |
0:d616ece2d859
|
574
|
* Send an IP packet to be received on the same netif (loopif-like).
|
| mbed714 |
0:d616ece2d859
|
575
|
* The pbuf is simply copied and handed back to netif->input.
|
| mbed714 |
0:d616ece2d859
|
576
|
* In multithreaded mode, this is done directly since netif->input must put
|
| mbed714 |
0:d616ece2d859
|
577
|
* the packet on a queue.
|
| mbed714 |
0:d616ece2d859
|
578
|
* In callback mode, the packet is put on an internal queue and is fed to
|
| mbed714 |
0:d616ece2d859
|
579
|
* netif->input by netif_poll().
|
| mbed714 |
0:d616ece2d859
|
580
|
*
|
| mbed714 |
0:d616ece2d859
|
581
|
* @param netif the lwip network interface structure
|
| mbed714 |
0:d616ece2d859
|
582
|
* @param p the (IP) packet to 'send'
|
| mbed714 |
0:d616ece2d859
|
583
|
* @param ipaddr the ip address to send the packet to (not used)
|
| mbed714 |
0:d616ece2d859
|
584
|
* @return ERR_OK if the packet has been sent
|
| mbed714 |
0:d616ece2d859
|
585
|
* ERR_MEM if the pbuf used to copy the packet couldn't be allocated
|
| mbed714 |
0:d616ece2d859
|
586
|
*/
|
| mbed714 |
0:d616ece2d859
|
587
|
err_t
|
| mbed714 |
0:d616ece2d859
|
588
|
netif_loop_output(struct netif *netif, struct pbuf *p,
|
| mbed714 |
0:d616ece2d859
|
589
|
ip_addr_t *ipaddr)
|
| mbed714 |
0:d616ece2d859
|
590
|
{
|
| mbed714 |
0:d616ece2d859
|
591
|
struct pbuf *r;
|
| mbed714 |
0:d616ece2d859
|
592
|
err_t err;
|
| mbed714 |
0:d616ece2d859
|
593
|
struct pbuf *last;
|
| mbed714 |
0:d616ece2d859
|
594
|
#if LWIP_LOOPBACK_MAX_PBUFS
|
| mbed714 |
0:d616ece2d859
|
595
|
u8_t clen = 0;
|
| mbed714 |
0:d616ece2d859
|
596
|
#endif /* LWIP_LOOPBACK_MAX_PBUFS */
|
| mbed714 |
0:d616ece2d859
|
597
|
/* If we have a loopif, SNMP counters are adjusted for it,
|
| mbed714 |
0:d616ece2d859
|
598
|
* if not they are adjusted for 'netif'. */
|
| mbed714 |
0:d616ece2d859
|
599
|
#if LWIP_SNMP
|
| mbed714 |
0:d616ece2d859
|
600
|
#if LWIP_HAVE_LOOPIF
|
| mbed714 |
0:d616ece2d859
|
601
|
struct netif *stats_if = &loop_netif;
|
| mbed714 |
0:d616ece2d859
|
602
|
#else /* LWIP_HAVE_LOOPIF */
|
| mbed714 |
0:d616ece2d859
|
603
|
struct netif *stats_if = netif;
|
| mbed714 |
0:d616ece2d859
|
604
|
#endif /* LWIP_HAVE_LOOPIF */
|
| mbed714 |
0:d616ece2d859
|
605
|
#endif /* LWIP_SNMP */
|
| mbed714 |
0:d616ece2d859
|
606
|
SYS_ARCH_DECL_PROTECT(lev);
|
| mbed714 |
0:d616ece2d859
|
607
|
LWIP_UNUSED_ARG(ipaddr);
|
| mbed714 |
0:d616ece2d859
|
608
|
|
| mbed714 |
0:d616ece2d859
|
609
|
/* Allocate a new pbuf */
|
| mbed714 |
0:d616ece2d859
|
610
|
r = pbuf_alloc(PBUF_LINK, p->tot_len, PBUF_RAM);
|
| mbed714 |
0:d616ece2d859
|
611
|
if (r == NULL) {
|
| mbed714 |
0:d616ece2d859
|
612
|
LINK_STATS_INC(link.memerr);
|
| mbed714 |
0:d616ece2d859
|
613
|
LINK_STATS_INC(link.drop);
|
| mbed714 |
0:d616ece2d859
|
614
|
snmp_inc_ifoutdiscards(stats_if);
|
| mbed714 |
0:d616ece2d859
|
615
|
return ERR_MEM;
|
| mbed714 |
0:d616ece2d859
|
616
|
}
|
| mbed714 |
0:d616ece2d859
|
617
|
#if LWIP_LOOPBACK_MAX_PBUFS
|
| mbed714 |
0:d616ece2d859
|
618
|
clen = pbuf_clen(r);
|
| mbed714 |
0:d616ece2d859
|
619
|
/* check for overflow or too many pbuf on queue */
|
| mbed714 |
0:d616ece2d859
|
620
|
if(((netif->loop_cnt_current + clen) < netif->loop_cnt_current) ||
|
| mbed714 |
0:d616ece2d859
|
621
|
((netif->loop_cnt_current + clen) > LWIP_LOOPBACK_MAX_PBUFS)) {
|
| mbed714 |
0:d616ece2d859
|
622
|
pbuf_free(r);
|
| mbed714 |
0:d616ece2d859
|
623
|
LINK_STATS_INC(link.memerr);
|
| mbed714 |
0:d616ece2d859
|
624
|
LINK_STATS_INC(link.drop);
|
| mbed714 |
0:d616ece2d859
|
625
|
snmp_inc_ifoutdiscards(stats_if);
|
| mbed714 |
0:d616ece2d859
|
626
|
return ERR_MEM;
|
| mbed714 |
0:d616ece2d859
|
627
|
}
|
| mbed714 |
0:d616ece2d859
|
628
|
netif->loop_cnt_current += clen;
|
| mbed714 |
0:d616ece2d859
|
629
|
#endif /* LWIP_LOOPBACK_MAX_PBUFS */
|
| mbed714 |
0:d616ece2d859
|
630
|
|
| mbed714 |
0:d616ece2d859
|
631
|
/* Copy the whole pbuf queue p into the single pbuf r */
|
| mbed714 |
0:d616ece2d859
|
632
|
if ((err = pbuf_copy(r, p)) != ERR_OK) {
|
| mbed714 |
0:d616ece2d859
|
633
|
pbuf_free(r);
|
| mbed714 |
0:d616ece2d859
|
634
|
LINK_STATS_INC(link.memerr);
|
| mbed714 |
0:d616ece2d859
|
635
|
LINK_STATS_INC(link.drop);
|
| mbed714 |
0:d616ece2d859
|
636
|
snmp_inc_ifoutdiscards(stats_if);
|
| mbed714 |
0:d616ece2d859
|
637
|
return err;
|
| mbed714 |
0:d616ece2d859
|
638
|
}
|
| mbed714 |
0:d616ece2d859
|
639
|
|
| mbed714 |
0:d616ece2d859
|
640
|
/* Put the packet on a linked list which gets emptied through calling
|
| mbed714 |
0:d616ece2d859
|
641
|
netif_poll(). */
|
| mbed714 |
0:d616ece2d859
|
642
|
|
| mbed714 |
0:d616ece2d859
|
643
|
/* let last point to the last pbuf in chain r */
|
| mbed714 |
0:d616ece2d859
|
644
|
for (last = r; last->next != NULL; last = last->next);
|
| mbed714 |
0:d616ece2d859
|
645
|
|
| mbed714 |
0:d616ece2d859
|
646
|
SYS_ARCH_PROTECT(lev);
|
| mbed714 |
0:d616ece2d859
|
647
|
if(netif->loop_first != NULL) {
|
| mbed714 |
0:d616ece2d859
|
648
|
LWIP_ASSERT("if first != NULL, last must also be != NULL", netif->loop_last != NULL);
|
| mbed714 |
0:d616ece2d859
|
649
|
netif->loop_last->next = r;
|
| mbed714 |
0:d616ece2d859
|
650
|
netif->loop_last = last;
|
| mbed714 |
0:d616ece2d859
|
651
|
} else {
|
| mbed714 |
0:d616ece2d859
|
652
|
netif->loop_first = r;
|
| mbed714 |
0:d616ece2d859
|
653
|
netif->loop_last = last;
|
| mbed714 |
0:d616ece2d859
|
654
|
}
|
| mbed714 |
0:d616ece2d859
|
655
|
SYS_ARCH_UNPROTECT(lev);
|
| mbed714 |
0:d616ece2d859
|
656
|
|
| mbed714 |
0:d616ece2d859
|
657
|
LINK_STATS_INC(link.xmit);
|
| mbed714 |
0:d616ece2d859
|
658
|
snmp_add_ifoutoctets(stats_if, p->tot_len);
|
| mbed714 |
0:d616ece2d859
|
659
|
snmp_inc_ifoutucastpkts(stats_if);
|
| mbed714 |
0:d616ece2d859
|
660
|
|
| mbed714 |
0:d616ece2d859
|
661
|
#if LWIP_NETIF_LOOPBACK_MULTITHREADING
|
| mbed714 |
0:d616ece2d859
|
662
|
/* For multithreading environment, schedule a call to netif_poll */
|
| mbed714 |
0:d616ece2d859
|
663
|
tcpip_callback((tcpip_callback_fn)netif_poll, netif);
|
| mbed714 |
0:d616ece2d859
|
664
|
#endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */
|
| mbed714 |
0:d616ece2d859
|
665
|
|
| mbed714 |
0:d616ece2d859
|
666
|
return ERR_OK;
|
| mbed714 |
0:d616ece2d859
|
667
|
}
|
| mbed714 |
0:d616ece2d859
|
668
|
|
| mbed714 |
0:d616ece2d859
|
669
|
/**
|
| mbed714 |
0:d616ece2d859
|
670
|
* Call netif_poll() in the main loop of your application. This is to prevent
|
| mbed714 |
0:d616ece2d859
|
671
|
* reentering non-reentrant functions like tcp_input(). Packets passed to
|
| mbed714 |
0:d616ece2d859
|
672
|
* netif_loop_output() are put on a list that is passed to netif->input() by
|
| mbed714 |
0:d616ece2d859
|
673
|
* netif_poll().
|
| mbed714 |
0:d616ece2d859
|
674
|
*/
|
| mbed714 |
0:d616ece2d859
|
675
|
void
|
| mbed714 |
0:d616ece2d859
|
676
|
netif_poll(struct netif *netif)
|
| mbed714 |
0:d616ece2d859
|
677
|
{
|
| mbed714 |
0:d616ece2d859
|
678
|
struct pbuf *in;
|
| mbed714 |
0:d616ece2d859
|
679
|
/* If we have a loopif, SNMP counters are adjusted for it,
|
| mbed714 |
0:d616ece2d859
|
680
|
* if not they are adjusted for 'netif'. */
|
| mbed714 |
0:d616ece2d859
|
681
|
#if LWIP_SNMP
|
| mbed714 |
0:d616ece2d859
|
682
|
#if LWIP_HAVE_LOOPIF
|
| mbed714 |
0:d616ece2d859
|
683
|
struct netif *stats_if = &loop_netif;
|
| mbed714 |
0:d616ece2d859
|
684
|
#else /* LWIP_HAVE_LOOPIF */
|
| mbed714 |
0:d616ece2d859
|
685
|
struct netif *stats_if = netif;
|
| mbed714 |
0:d616ece2d859
|
686
|
#endif /* LWIP_HAVE_LOOPIF */
|
| mbed714 |
0:d616ece2d859
|
687
|
#endif /* LWIP_SNMP */
|
| mbed714 |
0:d616ece2d859
|
688
|
SYS_ARCH_DECL_PROTECT(lev);
|
| mbed714 |
0:d616ece2d859
|
689
|
|
| mbed714 |
0:d616ece2d859
|
690
|
do {
|
| mbed714 |
0:d616ece2d859
|
691
|
/* Get a packet from the list. With SYS_LIGHTWEIGHT_PROT=1, this is protected */
|
| mbed714 |
0:d616ece2d859
|
692
|
SYS_ARCH_PROTECT(lev);
|
| mbed714 |
0:d616ece2d859
|
693
|
in = netif->loop_first;
|
| mbed714 |
0:d616ece2d859
|
694
|
if (in != NULL) {
|
| mbed714 |
0:d616ece2d859
|
695
|
struct pbuf *in_end = in;
|
| mbed714 |
0:d616ece2d859
|
696
|
#if LWIP_LOOPBACK_MAX_PBUFS
|
| mbed714 |
0:d616ece2d859
|
697
|
u8_t clen = pbuf_clen(in);
|
| mbed714 |
0:d616ece2d859
|
698
|
/* adjust the number of pbufs on queue */
|
| mbed714 |
0:d616ece2d859
|
699
|
LWIP_ASSERT("netif->loop_cnt_current underflow",
|
| mbed714 |
0:d616ece2d859
|
700
|
((netif->loop_cnt_current - clen) < netif->loop_cnt_current));
|
| mbed714 |
0:d616ece2d859
|
701
|
netif->loop_cnt_current -= clen;
|
| mbed714 |
0:d616ece2d859
|
702
|
#endif /* LWIP_LOOPBACK_MAX_PBUFS */
|
| mbed714 |
0:d616ece2d859
|
703
|
while (in_end->len != in_end->tot_len) {
|
| mbed714 |
0:d616ece2d859
|
704
|
LWIP_ASSERT("bogus pbuf: len != tot_len but next == NULL!", in_end->next != NULL);
|
| mbed714 |
0:d616ece2d859
|
705
|
in_end = in_end->next;
|
| mbed714 |
0:d616ece2d859
|
706
|
}
|
| mbed714 |
0:d616ece2d859
|
707
|
/* 'in_end' now points to the last pbuf from 'in' */
|
| mbed714 |
0:d616ece2d859
|
708
|
if (in_end == netif->loop_last) {
|
| mbed714 |
0:d616ece2d859
|
709
|
/* this was the last pbuf in the list */
|
| mbed714 |
0:d616ece2d859
|
710
|
netif->loop_first = netif->loop_last = NULL;
|
| mbed714 |
0:d616ece2d859
|
711
|
} else {
|
| mbed714 |
0:d616ece2d859
|
712
|
/* pop the pbuf off the list */
|
| mbed714 |
0:d616ece2d859
|
713
|
netif->loop_first = in_end->next;
|
| mbed714 |
0:d616ece2d859
|
714
|
LWIP_ASSERT("should not be null since first != last!", netif->loop_first != NULL);
|
| mbed714 |
0:d616ece2d859
|
715
|
}
|
| mbed714 |
0:d616ece2d859
|
716
|
/* De-queue the pbuf from its successors on the 'loop_' list. */
|
| mbed714 |
0:d616ece2d859
|
717
|
in_end->next = NULL;
|
| mbed714 |
0:d616ece2d859
|
718
|
}
|
| mbed714 |
0:d616ece2d859
|
719
|
SYS_ARCH_UNPROTECT(lev);
|
| mbed714 |
0:d616ece2d859
|
720
|
|
| mbed714 |
0:d616ece2d859
|
721
|
if (in != NULL) {
|
| mbed714 |
0:d616ece2d859
|
722
|
LINK_STATS_INC(link.recv);
|
| mbed714 |
0:d616ece2d859
|
723
|
snmp_add_ifinoctets(stats_if, in->tot_len);
|
| mbed714 |
0:d616ece2d859
|
724
|
snmp_inc_ifinucastpkts(stats_if);
|
| mbed714 |
0:d616ece2d859
|
725
|
/* loopback packets are always IP packets! */
|
| mbed714 |
0:d616ece2d859
|
726
|
if (ip_input(in, netif) != ERR_OK) {
|
| mbed714 |
0:d616ece2d859
|
727
|
pbuf_free(in);
|
| mbed714 |
0:d616ece2d859
|
728
|
}
|
| mbed714 |
0:d616ece2d859
|
729
|
/* Don't reference the packet any more! */
|
| mbed714 |
0:d616ece2d859
|
730
|
in = NULL;
|
| mbed714 |
0:d616ece2d859
|
731
|
}
|
| mbed714 |
0:d616ece2d859
|
732
|
/* go on while there is a packet on the list */
|
| mbed714 |
0:d616ece2d859
|
733
|
} while (netif->loop_first != NULL);
|
| mbed714 |
0:d616ece2d859
|
734
|
}
|
| mbed714 |
0:d616ece2d859
|
735
|
|
| mbed714 |
0:d616ece2d859
|
736
|
#if !LWIP_NETIF_LOOPBACK_MULTITHREADING
|
| mbed714 |
0:d616ece2d859
|
737
|
/**
|
| mbed714 |
0:d616ece2d859
|
738
|
* Calls netif_poll() for every netif on the netif_list.
|
| mbed714 |
0:d616ece2d859
|
739
|
*/
|
| mbed714 |
0:d616ece2d859
|
740
|
void
|
| mbed714 |
0:d616ece2d859
|
741
|
netif_poll_all(void)
|
| mbed714 |
0:d616ece2d859
|
742
|
{
|
| mbed714 |
0:d616ece2d859
|
743
|
struct netif *netif = netif_list;
|
| mbed714 |
0:d616ece2d859
|
744
|
/* loop through netifs */
|
| mbed714 |
0:d616ece2d859
|
745
|
while (netif != NULL) {
|
| mbed714 |
0:d616ece2d859
|
746
|
netif_poll(netif);
|
| mbed714 |
0:d616ece2d859
|
747
|
/* proceed to next network interface */
|
| mbed714 |
0:d616ece2d859
|
748
|
netif = netif->next;
|
| mbed714 |
0:d616ece2d859
|
749
|
}
|
| mbed714 |
0:d616ece2d859
|
750
|
}
|
| mbed714 |
0:d616ece2d859
|
751
|
#endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */
|
| mbed714 |
0:d616ece2d859
|
752
|
#endif /* ENABLE_LOOPBACK */
|
Daniel Peter