Simon Ford / NetServices

Version of http://mbed.org/cookbook/NetServicesTribute with setting set the same for LPC2368

Dependents:   UDPSocketExample 24LCxx_I2CApp WeatherPlatform_pachube HvZServerLib ... more

lwip/core/netif.c@0:350011bf8be7, 2010-11-23 (annotated)

Committer:
simon
Date:
Tue Nov 23 14:15:36 2010 +0000
Revision:
0:350011bf8be7
Experimental version for testing UDP

Who changed what in which revision?

UserRevisionLine numberNew contents of line
simon 0:350011bf8be7 1 /**
simon 0:350011bf8be7 2 * @file
simon 0:350011bf8be7 3 * lwIP network interface abstraction
simon 0:350011bf8be7 4 *
simon 0:350011bf8be7 5 */
simon 0:350011bf8be7 6
simon 0:350011bf8be7 7 /*
simon 0:350011bf8be7 8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
simon 0:350011bf8be7 9 * All rights reserved.
simon 0:350011bf8be7 10 *
simon 0:350011bf8be7 11 * Redistribution and use in source and binary forms, with or without modification,
simon 0:350011bf8be7 12 * are permitted provided that the following conditions are met:
simon 0:350011bf8be7 13 *
simon 0:350011bf8be7 14 * 1. Redistributions of source code must retain the above copyright notice,
simon 0:350011bf8be7 15 * this list of conditions and the following disclaimer.
simon 0:350011bf8be7 16 * 2. Redistributions in binary form must reproduce the above copyright notice,
simon 0:350011bf8be7 17 * this list of conditions and the following disclaimer in the documentation
simon 0:350011bf8be7 18 * and/or other materials provided with the distribution.
simon 0:350011bf8be7 19 * 3. The name of the author may not be used to endorse or promote products
simon 0:350011bf8be7 20 * derived from this software without specific prior written permission.
simon 0:350011bf8be7 21 *
simon 0:350011bf8be7 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
simon 0:350011bf8be7 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
simon 0:350011bf8be7 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
simon 0:350011bf8be7 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
simon 0:350011bf8be7 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
simon 0:350011bf8be7 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
simon 0:350011bf8be7 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
simon 0:350011bf8be7 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
simon 0:350011bf8be7 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
simon 0:350011bf8be7 31 * OF SUCH DAMAGE.
simon 0:350011bf8be7 32 *
simon 0:350011bf8be7 33 * This file is part of the lwIP TCP/IP stack.
simon 0:350011bf8be7 34 *
simon 0:350011bf8be7 35 * Author: Adam Dunkels <adam@sics.se>
simon 0:350011bf8be7 36 *
simon 0:350011bf8be7 37 */
simon 0:350011bf8be7 38
simon 0:350011bf8be7 39 #include "lwip/opt.h"
simon 0:350011bf8be7 40
simon 0:350011bf8be7 41 #include "lwip/def.h"
simon 0:350011bf8be7 42 #include "lwip/ip_addr.h"
simon 0:350011bf8be7 43 #include "lwip/netif.h"
simon 0:350011bf8be7 44 #include "lwip/tcp_impl.h"
simon 0:350011bf8be7 45 #include "lwip/snmp.h"
simon 0:350011bf8be7 46 #include "lwip/igmp.h"
simon 0:350011bf8be7 47 #include "netif/etharp.h"
simon 0:350011bf8be7 48 #include "lwip/stats.h"
simon 0:350011bf8be7 49 #if ENABLE_LOOPBACK
simon 0:350011bf8be7 50 #include "lwip/sys.h"
simon 0:350011bf8be7 51 #if LWIP_NETIF_LOOPBACK_MULTITHREADING
simon 0:350011bf8be7 52 #include "lwip/tcpip.h"
simon 0:350011bf8be7 53 #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */
simon 0:350011bf8be7 54 #endif /* ENABLE_LOOPBACK */
simon 0:350011bf8be7 55
simon 0:350011bf8be7 56 #if LWIP_AUTOIP
simon 0:350011bf8be7 57 #include "lwip/autoip.h"
simon 0:350011bf8be7 58 #endif /* LWIP_AUTOIP */
simon 0:350011bf8be7 59 #if LWIP_DHCP
simon 0:350011bf8be7 60 #include "lwip/dhcp.h"
simon 0:350011bf8be7 61 #endif /* LWIP_DHCP */
simon 0:350011bf8be7 62
simon 0:350011bf8be7 63 #if LWIP_NETIF_STATUS_CALLBACK
simon 0:350011bf8be7 64 #define NETIF_STATUS_CALLBACK(n) do{ if (n->status_callback) { (n->status_callback)(n); }}while(0)
simon 0:350011bf8be7 65 #else
simon 0:350011bf8be7 66 #define NETIF_STATUS_CALLBACK(n)
simon 0:350011bf8be7 67 #endif /* LWIP_NETIF_STATUS_CALLBACK */
simon 0:350011bf8be7 68
simon 0:350011bf8be7 69 #if LWIP_NETIF_LINK_CALLBACK
simon 0:350011bf8be7 70 #define NETIF_LINK_CALLBACK(n) do{ if (n->link_callback) { (n->link_callback)(n); }}while(0)
simon 0:350011bf8be7 71 #else
simon 0:350011bf8be7 72 #define NETIF_LINK_CALLBACK(n)
simon 0:350011bf8be7 73 #endif /* LWIP_NETIF_LINK_CALLBACK */
simon 0:350011bf8be7 74
simon 0:350011bf8be7 75 struct netif *netif_list;
simon 0:350011bf8be7 76 struct netif *netif_default;
simon 0:350011bf8be7 77
simon 0:350011bf8be7 78 #if LWIP_HAVE_LOOPIF
simon 0:350011bf8be7 79 static struct netif loop_netif;
simon 0:350011bf8be7 80
simon 0:350011bf8be7 81 /**
simon 0:350011bf8be7 82 * Initialize a lwip network interface structure for a loopback interface
simon 0:350011bf8be7 83 *
simon 0:350011bf8be7 84 * @param netif the lwip network interface structure for this loopif
simon 0:350011bf8be7 85 * @return ERR_OK if the loopif is initialized
simon 0:350011bf8be7 86 * ERR_MEM if private data couldn't be allocated
simon 0:350011bf8be7 87 */
simon 0:350011bf8be7 88 static err_t
simon 0:350011bf8be7 89 netif_loopif_init(struct netif *netif)
simon 0:350011bf8be7 90 {
simon 0:350011bf8be7 91 /* initialize the snmp variables and counters inside the struct netif
simon 0:350011bf8be7 92 * ifSpeed: no assumption can be made!
simon 0:350011bf8be7 93 */
simon 0:350011bf8be7 94 NETIF_INIT_SNMP(netif, snmp_ifType_softwareLoopback, 0);
simon 0:350011bf8be7 95
simon 0:350011bf8be7 96 netif->name[0] = 'l';
simon 0:350011bf8be7 97 netif->name[1] = 'o';
simon 0:350011bf8be7 98 netif->output = netif_loop_output;
simon 0:350011bf8be7 99 return ERR_OK;
simon 0:350011bf8be7 100 }
simon 0:350011bf8be7 101 #endif /* LWIP_HAVE_LOOPIF */
simon 0:350011bf8be7 102
simon 0:350011bf8be7 103 void
simon 0:350011bf8be7 104 netif_init(void)
simon 0:350011bf8be7 105 {
simon 0:350011bf8be7 106 #if LWIP_HAVE_LOOPIF
simon 0:350011bf8be7 107 ip_addr_t loop_ipaddr, loop_netmask, loop_gw;
simon 0:350011bf8be7 108 IP4_ADDR(&loop_gw, 127,0,0,1);
simon 0:350011bf8be7 109 IP4_ADDR(&loop_ipaddr, 127,0,0,1);
simon 0:350011bf8be7 110 IP4_ADDR(&loop_netmask, 255,0,0,0);
simon 0:350011bf8be7 111
simon 0:350011bf8be7 112 #if NO_SYS
simon 0:350011bf8be7 113 netif_add(&loop_netif, &loop_ipaddr, &loop_netmask, &loop_gw, NULL, netif_loopif_init, ip_input);
simon 0:350011bf8be7 114 #else /* NO_SYS */
simon 0:350011bf8be7 115 netif_add(&loop_netif, &loop_ipaddr, &loop_netmask, &loop_gw, NULL, netif_loopif_init, tcpip_input);
simon 0:350011bf8be7 116 #endif /* NO_SYS */
simon 0:350011bf8be7 117 netif_set_up(&loop_netif);
simon 0:350011bf8be7 118
simon 0:350011bf8be7 119 #endif /* LWIP_HAVE_LOOPIF */
simon 0:350011bf8be7 120 }
simon 0:350011bf8be7 121
simon 0:350011bf8be7 122 /**
simon 0:350011bf8be7 123 * Add a network interface to the list of lwIP netifs.
simon 0:350011bf8be7 124 *
simon 0:350011bf8be7 125 * @param netif a pre-allocated netif structure
simon 0:350011bf8be7 126 * @param ipaddr IP address for the new netif
simon 0:350011bf8be7 127 * @param netmask network mask for the new netif
simon 0:350011bf8be7 128 * @param gw default gateway IP address for the new netif
simon 0:350011bf8be7 129 * @param state opaque data passed to the new netif
simon 0:350011bf8be7 130 * @param init callback function that initializes the interface
simon 0:350011bf8be7 131 * @param input callback function that is called to pass
simon 0:350011bf8be7 132 * ingress packets up in the protocol layer stack.
simon 0:350011bf8be7 133 *
simon 0:350011bf8be7 134 * @return netif, or NULL if failed.
simon 0:350011bf8be7 135 */
simon 0:350011bf8be7 136 struct netif *
simon 0:350011bf8be7 137 netif_add(struct netif *netif, ip_addr_t *ipaddr, ip_addr_t *netmask,
simon 0:350011bf8be7 138 ip_addr_t *gw, void *state, netif_init_fn init, netif_input_fn input)
simon 0:350011bf8be7 139 {
simon 0:350011bf8be7 140 static u8_t netifnum = 0;
simon 0:350011bf8be7 141
simon 0:350011bf8be7 142 LWIP_ASSERT("No init function given", init != NULL);
simon 0:350011bf8be7 143
simon 0:350011bf8be7 144 /* reset new interface configuration state */
simon 0:350011bf8be7 145 ip_addr_set_zero(&netif->ip_addr);
simon 0:350011bf8be7 146 ip_addr_set_zero(&netif->netmask);
simon 0:350011bf8be7 147 ip_addr_set_zero(&netif->gw);
simon 0:350011bf8be7 148 netif->flags = 0;
simon 0:350011bf8be7 149 #if LWIP_DHCP
simon 0:350011bf8be7 150 /* netif not under DHCP control by default */
simon 0:350011bf8be7 151 netif->dhcp = NULL;
simon 0:350011bf8be7 152 #endif /* LWIP_DHCP */
simon 0:350011bf8be7 153 #if LWIP_AUTOIP
simon 0:350011bf8be7 154 /* netif not under AutoIP control by default */
simon 0:350011bf8be7 155 netif->autoip = NULL;
simon 0:350011bf8be7 156 #endif /* LWIP_AUTOIP */
simon 0:350011bf8be7 157 #if LWIP_NETIF_STATUS_CALLBACK
simon 0:350011bf8be7 158 netif->status_callback = NULL;
simon 0:350011bf8be7 159 #endif /* LWIP_NETIF_STATUS_CALLBACK */
simon 0:350011bf8be7 160 #if LWIP_NETIF_LINK_CALLBACK
simon 0:350011bf8be7 161 netif->link_callback = NULL;
simon 0:350011bf8be7 162 #endif /* LWIP_NETIF_LINK_CALLBACK */
simon 0:350011bf8be7 163 #if LWIP_IGMP
simon 0:350011bf8be7 164 netif->igmp_mac_filter = NULL;
simon 0:350011bf8be7 165 #endif /* LWIP_IGMP */
simon 0:350011bf8be7 166 #if ENABLE_LOOPBACK
simon 0:350011bf8be7 167 netif->loop_first = NULL;
simon 0:350011bf8be7 168 netif->loop_last = NULL;
simon 0:350011bf8be7 169 #endif /* ENABLE_LOOPBACK */
simon 0:350011bf8be7 170
simon 0:350011bf8be7 171 /* remember netif specific state information data */
simon 0:350011bf8be7 172 netif->state = state;
simon 0:350011bf8be7 173 netif->num = netifnum++;
simon 0:350011bf8be7 174 netif->input = input;
simon 0:350011bf8be7 175 #if LWIP_NETIF_HWADDRHINT
simon 0:350011bf8be7 176 netif->addr_hint = NULL;
simon 0:350011bf8be7 177 #endif /* LWIP_NETIF_HWADDRHINT*/
simon 0:350011bf8be7 178 #if ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS
simon 0:350011bf8be7 179 netif->loop_cnt_current = 0;
simon 0:350011bf8be7 180 #endif /* ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS */
simon 0:350011bf8be7 181
simon 0:350011bf8be7 182 netif_set_addr(netif, ipaddr, netmask, gw);
simon 0:350011bf8be7 183
simon 0:350011bf8be7 184 /* call user specified initialization function for netif */
simon 0:350011bf8be7 185 if (init(netif) != ERR_OK) {
simon 0:350011bf8be7 186 return NULL;
simon 0:350011bf8be7 187 }
simon 0:350011bf8be7 188
simon 0:350011bf8be7 189 /* add this netif to the list */
simon 0:350011bf8be7 190 netif->next = netif_list;
simon 0:350011bf8be7 191 netif_list = netif;
simon 0:350011bf8be7 192 snmp_inc_iflist();
simon 0:350011bf8be7 193
simon 0:350011bf8be7 194 #if LWIP_IGMP
simon 0:350011bf8be7 195 /* start IGMP processing */
simon 0:350011bf8be7 196 if (netif->flags & NETIF_FLAG_IGMP) {
simon 0:350011bf8be7 197 igmp_start(netif);
simon 0:350011bf8be7 198 }
simon 0:350011bf8be7 199 #endif /* LWIP_IGMP */
simon 0:350011bf8be7 200
simon 0:350011bf8be7 201 LWIP_DEBUGF(NETIF_DEBUG, ("netif: added interface %c%c IP addr ",
simon 0:350011bf8be7 202 netif->name[0], netif->name[1]));
simon 0:350011bf8be7 203 ip_addr_debug_print(NETIF_DEBUG, ipaddr);
simon 0:350011bf8be7 204 LWIP_DEBUGF(NETIF_DEBUG, (" netmask "));
simon 0:350011bf8be7 205 ip_addr_debug_print(NETIF_DEBUG, netmask);
simon 0:350011bf8be7 206 LWIP_DEBUGF(NETIF_DEBUG, (" gw "));
simon 0:350011bf8be7 207 ip_addr_debug_print(NETIF_DEBUG, gw);
simon 0:350011bf8be7 208 LWIP_DEBUGF(NETIF_DEBUG, ("\n"));
simon 0:350011bf8be7 209 return netif;
simon 0:350011bf8be7 210 }
simon 0:350011bf8be7 211
simon 0:350011bf8be7 212 /**
simon 0:350011bf8be7 213 * Change IP address configuration for a network interface (including netmask
simon 0:350011bf8be7 214 * and default gateway).
simon 0:350011bf8be7 215 *
simon 0:350011bf8be7 216 * @param netif the network interface to change
simon 0:350011bf8be7 217 * @param ipaddr the new IP address
simon 0:350011bf8be7 218 * @param netmask the new netmask
simon 0:350011bf8be7 219 * @param gw the new default gateway
simon 0:350011bf8be7 220 */
simon 0:350011bf8be7 221 void
simon 0:350011bf8be7 222 netif_set_addr(struct netif *netif, ip_addr_t *ipaddr, ip_addr_t *netmask,
simon 0:350011bf8be7 223 ip_addr_t *gw)
simon 0:350011bf8be7 224 {
simon 0:350011bf8be7 225 netif_set_ipaddr(netif, ipaddr);
simon 0:350011bf8be7 226 netif_set_netmask(netif, netmask);
simon 0:350011bf8be7 227 netif_set_gw(netif, gw);
simon 0:350011bf8be7 228 }
simon 0:350011bf8be7 229
simon 0:350011bf8be7 230 /**
simon 0:350011bf8be7 231 * Remove a network interface from the list of lwIP netifs.
simon 0:350011bf8be7 232 *
simon 0:350011bf8be7 233 * @param netif the network interface to remove
simon 0:350011bf8be7 234 */
simon 0:350011bf8be7 235 void
simon 0:350011bf8be7 236 netif_remove(struct netif *netif)
simon 0:350011bf8be7 237 {
simon 0:350011bf8be7 238 if (netif == NULL) {
simon 0:350011bf8be7 239 return;
simon 0:350011bf8be7 240 }
simon 0:350011bf8be7 241
simon 0:350011bf8be7 242 #if LWIP_IGMP
simon 0:350011bf8be7 243 /* stop IGMP processing */
simon 0:350011bf8be7 244 if (netif->flags & NETIF_FLAG_IGMP) {
simon 0:350011bf8be7 245 igmp_stop(netif);
simon 0:350011bf8be7 246 }
simon 0:350011bf8be7 247 #endif /* LWIP_IGMP */
simon 0:350011bf8be7 248 if (netif_is_up(netif)) {
simon 0:350011bf8be7 249 /* set netif down before removing (call callback function) */
simon 0:350011bf8be7 250 netif_set_down(netif);
simon 0:350011bf8be7 251 }
simon 0:350011bf8be7 252
simon 0:350011bf8be7 253 snmp_delete_ipaddridx_tree(netif);
simon 0:350011bf8be7 254
simon 0:350011bf8be7 255 /* is it the first netif? */
simon 0:350011bf8be7 256 if (netif_list == netif) {
simon 0:350011bf8be7 257 netif_list = netif->next;
simon 0:350011bf8be7 258 } else {
simon 0:350011bf8be7 259 /* look for netif further down the list */
simon 0:350011bf8be7 260 struct netif * tmpNetif;
simon 0:350011bf8be7 261 for (tmpNetif = netif_list; tmpNetif != NULL; tmpNetif = tmpNetif->next) {
simon 0:350011bf8be7 262 if (tmpNetif->next == netif) {
simon 0:350011bf8be7 263 tmpNetif->next = netif->next;
simon 0:350011bf8be7 264 break;
simon 0:350011bf8be7 265 }
simon 0:350011bf8be7 266 }
simon 0:350011bf8be7 267 if (tmpNetif == NULL)
simon 0:350011bf8be7 268 return; /* we didn't find any netif today */
simon 0:350011bf8be7 269 }
simon 0:350011bf8be7 270 snmp_dec_iflist();
simon 0:350011bf8be7 271 /* this netif is default? */
simon 0:350011bf8be7 272 if (netif_default == netif) {
simon 0:350011bf8be7 273 /* reset default netif */
simon 0:350011bf8be7 274 netif_set_default(NULL);
simon 0:350011bf8be7 275 }
simon 0:350011bf8be7 276 LWIP_DEBUGF( NETIF_DEBUG, ("netif_remove: removed netif\n") );
simon 0:350011bf8be7 277 }
simon 0:350011bf8be7 278
simon 0:350011bf8be7 279 /**
simon 0:350011bf8be7 280 * Find a network interface by searching for its name
simon 0:350011bf8be7 281 *
simon 0:350011bf8be7 282 * @param name the name of the netif (like netif->name) plus concatenated number
simon 0:350011bf8be7 283 * in ascii representation (e.g. 'en0')
simon 0:350011bf8be7 284 */
simon 0:350011bf8be7 285 struct netif *
simon 0:350011bf8be7 286 netif_find(char *name)
simon 0:350011bf8be7 287 {
simon 0:350011bf8be7 288 struct netif *netif;
simon 0:350011bf8be7 289 u8_t num;
simon 0:350011bf8be7 290
simon 0:350011bf8be7 291 if (name == NULL) {
simon 0:350011bf8be7 292 return NULL;
simon 0:350011bf8be7 293 }
simon 0:350011bf8be7 294
simon 0:350011bf8be7 295 num = name[2] - '0';
simon 0:350011bf8be7 296
simon 0:350011bf8be7 297 for(netif = netif_list; netif != NULL; netif = netif->next) {
simon 0:350011bf8be7 298 if (num == netif->num &&
simon 0:350011bf8be7 299 name[0] == netif->name[0] &&
simon 0:350011bf8be7 300 name[1] == netif->name[1]) {
simon 0:350011bf8be7 301 LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: found %c%c\n", name[0], name[1]));
simon 0:350011bf8be7 302 return netif;
simon 0:350011bf8be7 303 }
simon 0:350011bf8be7 304 }
simon 0:350011bf8be7 305 LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: didn't find %c%c\n", name[0], name[1]));
simon 0:350011bf8be7 306 return NULL;
simon 0:350011bf8be7 307 }
simon 0:350011bf8be7 308
simon 0:350011bf8be7 309 /**
simon 0:350011bf8be7 310 * Change the IP address of a network interface
simon 0:350011bf8be7 311 *
simon 0:350011bf8be7 312 * @param netif the network interface to change
simon 0:350011bf8be7 313 * @param ipaddr the new IP address
simon 0:350011bf8be7 314 *
simon 0:350011bf8be7 315 * @note call netif_set_addr() if you also want to change netmask and
simon 0:350011bf8be7 316 * default gateway
simon 0:350011bf8be7 317 */
simon 0:350011bf8be7 318 void
simon 0:350011bf8be7 319 netif_set_ipaddr(struct netif *netif, ip_addr_t *ipaddr)
simon 0:350011bf8be7 320 {
simon 0:350011bf8be7 321 /* TODO: Handling of obsolete pcbs */
simon 0:350011bf8be7 322 /* See: http://mail.gnu.org/archive/html/lwip-users/2003-03/msg00118.html */
simon 0:350011bf8be7 323 #if LWIP_TCP
simon 0:350011bf8be7 324 struct tcp_pcb *pcb;
simon 0:350011bf8be7 325 struct tcp_pcb_listen *lpcb;
simon 0:350011bf8be7 326
simon 0:350011bf8be7 327 /* address is actually being changed? */
simon 0:350011bf8be7 328 if ((ip_addr_cmp(ipaddr, &(netif->ip_addr))) == 0) {
simon 0:350011bf8be7 329 /* extern struct tcp_pcb *tcp_active_pcbs; defined by tcp.h */
simon 0:350011bf8be7 330 LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_set_ipaddr: netif address being changed\n"));
simon 0:350011bf8be7 331 pcb = tcp_active_pcbs;
simon 0:350011bf8be7 332 while (pcb != NULL) {
simon 0:350011bf8be7 333 /* PCB bound to current local interface address? */
simon 0:350011bf8be7 334 if (ip_addr_cmp(&(pcb->local_ip), &(netif->ip_addr))
simon 0:350011bf8be7 335 #if LWIP_AUTOIP
simon 0:350011bf8be7 336 /* connections to link-local addresses must persist (RFC3927 ch. 1.9) */
simon 0:350011bf8be7 337 && !ip_addr_islinklocal(&(pcb->local_ip))
simon 0:350011bf8be7 338 #endif /* LWIP_AUTOIP */
simon 0:350011bf8be7 339 ) {
simon 0:350011bf8be7 340 /* this connection must be aborted */
simon 0:350011bf8be7 341 struct tcp_pcb *next = pcb->next;
simon 0:350011bf8be7 342 LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_set_ipaddr: aborting TCP pcb %p\n", (void *)pcb));
simon 0:350011bf8be7 343 tcp_abort(pcb);
simon 0:350011bf8be7 344 pcb = next;
simon 0:350011bf8be7 345 } else {
simon 0:350011bf8be7 346 pcb = pcb->next;
simon 0:350011bf8be7 347 }
simon 0:350011bf8be7 348 }
simon 0:350011bf8be7 349 for (lpcb = tcp_listen_pcbs.listen_pcbs; lpcb != NULL; lpcb = lpcb->next) {
simon 0:350011bf8be7 350 /* PCB bound to current local interface address? */
simon 0:350011bf8be7 351 if ((!(ip_addr_isany(&(lpcb->local_ip)))) &&
simon 0:350011bf8be7 352 (ip_addr_cmp(&(lpcb->local_ip), &(netif->ip_addr)))) {
simon 0:350011bf8be7 353 /* The PCB is listening to the old ipaddr and
simon 0:350011bf8be7 354 * is set to listen to the new one instead */
simon 0:350011bf8be7 355 ip_addr_set(&(lpcb->local_ip), ipaddr);
simon 0:350011bf8be7 356 }
simon 0:350011bf8be7 357 }
simon 0:350011bf8be7 358 }
simon 0:350011bf8be7 359 #endif
simon 0:350011bf8be7 360 snmp_delete_ipaddridx_tree(netif);
simon 0:350011bf8be7 361 snmp_delete_iprteidx_tree(0,netif);
simon 0:350011bf8be7 362 /* set new IP address to netif */
simon 0:350011bf8be7 363 ip_addr_set(&(netif->ip_addr), ipaddr);
simon 0:350011bf8be7 364 snmp_insert_ipaddridx_tree(netif);
simon 0:350011bf8be7 365 snmp_insert_iprteidx_tree(0,netif);
simon 0:350011bf8be7 366
simon 0:350011bf8be7 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",
simon 0:350011bf8be7 368 netif->name[0], netif->name[1],
simon 0:350011bf8be7 369 ip4_addr1_16(&netif->ip_addr),
simon 0:350011bf8be7 370 ip4_addr2_16(&netif->ip_addr),
simon 0:350011bf8be7 371 ip4_addr3_16(&netif->ip_addr),
simon 0:350011bf8be7 372 ip4_addr4_16(&netif->ip_addr)));
simon 0:350011bf8be7 373 }
simon 0:350011bf8be7 374
simon 0:350011bf8be7 375 /**
simon 0:350011bf8be7 376 * Change the default gateway for a network interface
simon 0:350011bf8be7 377 *
simon 0:350011bf8be7 378 * @param netif the network interface to change
simon 0:350011bf8be7 379 * @param gw the new default gateway
simon 0:350011bf8be7 380 *
simon 0:350011bf8be7 381 * @note call netif_set_addr() if you also want to change ip address and netmask
simon 0:350011bf8be7 382 */
simon 0:350011bf8be7 383 void
simon 0:350011bf8be7 384 netif_set_gw(struct netif *netif, ip_addr_t *gw)
simon 0:350011bf8be7 385 {
simon 0:350011bf8be7 386 ip_addr_set(&(netif->gw), gw);
simon 0:350011bf8be7 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",
simon 0:350011bf8be7 388 netif->name[0], netif->name[1],
simon 0:350011bf8be7 389 ip4_addr1_16(&netif->gw),
simon 0:350011bf8be7 390 ip4_addr2_16(&netif->gw),
simon 0:350011bf8be7 391 ip4_addr3_16(&netif->gw),
simon 0:350011bf8be7 392 ip4_addr4_16(&netif->gw)));
simon 0:350011bf8be7 393 }
simon 0:350011bf8be7 394
simon 0:350011bf8be7 395 /**
simon 0:350011bf8be7 396 * Change the netmask of a network interface
simon 0:350011bf8be7 397 *
simon 0:350011bf8be7 398 * @param netif the network interface to change
simon 0:350011bf8be7 399 * @param netmask the new netmask
simon 0:350011bf8be7 400 *
simon 0:350011bf8be7 401 * @note call netif_set_addr() if you also want to change ip address and
simon 0:350011bf8be7 402 * default gateway
simon 0:350011bf8be7 403 */
simon 0:350011bf8be7 404 void
simon 0:350011bf8be7 405 netif_set_netmask(struct netif *netif, ip_addr_t *netmask)
simon 0:350011bf8be7 406 {
simon 0:350011bf8be7 407 snmp_delete_iprteidx_tree(0, netif);
simon 0:350011bf8be7 408 /* set new netmask to netif */
simon 0:350011bf8be7 409 ip_addr_set(&(netif->netmask), netmask);
simon 0:350011bf8be7 410 snmp_insert_iprteidx_tree(0, netif);
simon 0:350011bf8be7 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",
simon 0:350011bf8be7 412 netif->name[0], netif->name[1],
simon 0:350011bf8be7 413 ip4_addr1_16(&netif->netmask),
simon 0:350011bf8be7 414 ip4_addr2_16(&netif->netmask),
simon 0:350011bf8be7 415 ip4_addr3_16(&netif->netmask),
simon 0:350011bf8be7 416 ip4_addr4_16(&netif->netmask)));
simon 0:350011bf8be7 417 }
simon 0:350011bf8be7 418
simon 0:350011bf8be7 419 /**
simon 0:350011bf8be7 420 * Set a network interface as the default network interface
simon 0:350011bf8be7 421 * (used to output all packets for which no specific route is found)
simon 0:350011bf8be7 422 *
simon 0:350011bf8be7 423 * @param netif the default network interface
simon 0:350011bf8be7 424 */
simon 0:350011bf8be7 425 void
simon 0:350011bf8be7 426 netif_set_default(struct netif *netif)
simon 0:350011bf8be7 427 {
simon 0:350011bf8be7 428 if (netif == NULL) {
simon 0:350011bf8be7 429 /* remove default route */
simon 0:350011bf8be7 430 snmp_delete_iprteidx_tree(1, netif);
simon 0:350011bf8be7 431 } else {
simon 0:350011bf8be7 432 /* install default route */
simon 0:350011bf8be7 433 snmp_insert_iprteidx_tree(1, netif);
simon 0:350011bf8be7 434 }
simon 0:350011bf8be7 435 netif_default = netif;
simon 0:350011bf8be7 436 LWIP_DEBUGF(NETIF_DEBUG, ("netif: setting default interface %c%c\n",
simon 0:350011bf8be7 437 netif ? netif->name[0] : '\'', netif ? netif->name[1] : '\''));
simon 0:350011bf8be7 438 }
simon 0:350011bf8be7 439
simon 0:350011bf8be7 440 /**
simon 0:350011bf8be7 441 * Bring an interface up, available for processing
simon 0:350011bf8be7 442 * traffic.
simon 0:350011bf8be7 443 *
simon 0:350011bf8be7 444 * @note: Enabling DHCP on a down interface will make it come
simon 0:350011bf8be7 445 * up once configured.
simon 0:350011bf8be7 446 *
simon 0:350011bf8be7 447 * @see dhcp_start()
simon 0:350011bf8be7 448 */
simon 0:350011bf8be7 449 void netif_set_up(struct netif *netif)
simon 0:350011bf8be7 450 {
simon 0:350011bf8be7 451 if (!(netif->flags & NETIF_FLAG_UP)) {
simon 0:350011bf8be7 452 netif->flags |= NETIF_FLAG_UP;
simon 0:350011bf8be7 453
simon 0:350011bf8be7 454 #if LWIP_SNMP
simon 0:350011bf8be7 455 snmp_get_sysuptime(&netif->ts);
simon 0:350011bf8be7 456 #endif /* LWIP_SNMP */
simon 0:350011bf8be7 457
simon 0:350011bf8be7 458 NETIF_STATUS_CALLBACK(netif);
simon 0:350011bf8be7 459
simon 0:350011bf8be7 460 if (netif->flags & NETIF_FLAG_LINK_UP) {
simon 0:350011bf8be7 461 #if LWIP_ARP
simon 0:350011bf8be7 462 /* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */
simon 0:350011bf8be7 463 if (netif->flags & (NETIF_FLAG_ETHARP)) {
simon 0:350011bf8be7 464 etharp_gratuitous(netif);
simon 0:350011bf8be7 465 }
simon 0:350011bf8be7 466 #endif /* LWIP_ARP */
simon 0:350011bf8be7 467
simon 0:350011bf8be7 468 #if LWIP_IGMP
simon 0:350011bf8be7 469 /* resend IGMP memberships */
simon 0:350011bf8be7 470 if (netif->flags & NETIF_FLAG_IGMP) {
simon 0:350011bf8be7 471 igmp_report_groups( netif);
simon 0:350011bf8be7 472 }
simon 0:350011bf8be7 473 #endif /* LWIP_IGMP */
simon 0:350011bf8be7 474 }
simon 0:350011bf8be7 475 }
simon 0:350011bf8be7 476 }
simon 0:350011bf8be7 477
simon 0:350011bf8be7 478 /**
simon 0:350011bf8be7 479 * Bring an interface down, disabling any traffic processing.
simon 0:350011bf8be7 480 *
simon 0:350011bf8be7 481 * @note: Enabling DHCP on a down interface will make it come
simon 0:350011bf8be7 482 * up once configured.
simon 0:350011bf8be7 483 *
simon 0:350011bf8be7 484 * @see dhcp_start()
simon 0:350011bf8be7 485 */
simon 0:350011bf8be7 486 void netif_set_down(struct netif *netif)
simon 0:350011bf8be7 487 {
simon 0:350011bf8be7 488 if (netif->flags & NETIF_FLAG_UP) {
simon 0:350011bf8be7 489 netif->flags &= ~NETIF_FLAG_UP;
simon 0:350011bf8be7 490 #if LWIP_SNMP
simon 0:350011bf8be7 491 snmp_get_sysuptime(&netif->ts);
simon 0:350011bf8be7 492 #endif
simon 0:350011bf8be7 493
simon 0:350011bf8be7 494 NETIF_STATUS_CALLBACK(netif);
simon 0:350011bf8be7 495 }
simon 0:350011bf8be7 496 }
simon 0:350011bf8be7 497
simon 0:350011bf8be7 498 #if LWIP_NETIF_STATUS_CALLBACK
simon 0:350011bf8be7 499 /**
simon 0:350011bf8be7 500 * Set callback to be called when interface is brought up/down
simon 0:350011bf8be7 501 */
simon 0:350011bf8be7 502 void netif_set_status_callback(struct netif *netif, netif_status_callback_fn status_callback)
simon 0:350011bf8be7 503 {
simon 0:350011bf8be7 504 if (netif) {
simon 0:350011bf8be7 505 netif->status_callback = status_callback;
simon 0:350011bf8be7 506 }
simon 0:350011bf8be7 507 }
simon 0:350011bf8be7 508 #endif /* LWIP_NETIF_STATUS_CALLBACK */
simon 0:350011bf8be7 509
simon 0:350011bf8be7 510 /**
simon 0:350011bf8be7 511 * Called by a driver when its link goes up
simon 0:350011bf8be7 512 */
simon 0:350011bf8be7 513 void netif_set_link_up(struct netif *netif )
simon 0:350011bf8be7 514 {
simon 0:350011bf8be7 515 if (!(netif->flags & NETIF_FLAG_LINK_UP)) {
simon 0:350011bf8be7 516 netif->flags |= NETIF_FLAG_LINK_UP;
simon 0:350011bf8be7 517
simon 0:350011bf8be7 518 #if LWIP_DHCP
simon 0:350011bf8be7 519 if (netif->dhcp) {
simon 0:350011bf8be7 520 dhcp_network_changed(netif);
simon 0:350011bf8be7 521 }
simon 0:350011bf8be7 522 #endif /* LWIP_DHCP */
simon 0:350011bf8be7 523
simon 0:350011bf8be7 524 #if LWIP_AUTOIP
simon 0:350011bf8be7 525 if (netif->autoip) {
simon 0:350011bf8be7 526 autoip_network_changed(netif);
simon 0:350011bf8be7 527 }
simon 0:350011bf8be7 528 #endif /* LWIP_AUTOIP */
simon 0:350011bf8be7 529
simon 0:350011bf8be7 530 if (netif->flags & NETIF_FLAG_UP) {
simon 0:350011bf8be7 531 #if LWIP_ARP
simon 0:350011bf8be7 532 /* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */
simon 0:350011bf8be7 533 if (netif->flags & NETIF_FLAG_ETHARP) {
simon 0:350011bf8be7 534 etharp_gratuitous(netif);
simon 0:350011bf8be7 535 }
simon 0:350011bf8be7 536 #endif /* LWIP_ARP */
simon 0:350011bf8be7 537
simon 0:350011bf8be7 538 #if LWIP_IGMP
simon 0:350011bf8be7 539 /* resend IGMP memberships */
simon 0:350011bf8be7 540 if (netif->flags & NETIF_FLAG_IGMP) {
simon 0:350011bf8be7 541 igmp_report_groups( netif);
simon 0:350011bf8be7 542 }
simon 0:350011bf8be7 543 #endif /* LWIP_IGMP */
simon 0:350011bf8be7 544 }
simon 0:350011bf8be7 545 NETIF_LINK_CALLBACK(netif);
simon 0:350011bf8be7 546 }
simon 0:350011bf8be7 547 }
simon 0:350011bf8be7 548
simon 0:350011bf8be7 549 /**
simon 0:350011bf8be7 550 * Called by a driver when its link goes down
simon 0:350011bf8be7 551 */
simon 0:350011bf8be7 552 void netif_set_link_down(struct netif *netif )
simon 0:350011bf8be7 553 {
simon 0:350011bf8be7 554 if (netif->flags & NETIF_FLAG_LINK_UP) {
simon 0:350011bf8be7 555 netif->flags &= ~NETIF_FLAG_LINK_UP;
simon 0:350011bf8be7 556 NETIF_LINK_CALLBACK(netif);
simon 0:350011bf8be7 557 }
simon 0:350011bf8be7 558 }
simon 0:350011bf8be7 559
simon 0:350011bf8be7 560 #if LWIP_NETIF_LINK_CALLBACK
simon 0:350011bf8be7 561 /**
simon 0:350011bf8be7 562 * Set callback to be called when link is brought up/down
simon 0:350011bf8be7 563 */
simon 0:350011bf8be7 564 void netif_set_link_callback(struct netif *netif, netif_status_callback_fn link_callback)
simon 0:350011bf8be7 565 {
simon 0:350011bf8be7 566 if (netif) {
simon 0:350011bf8be7 567 netif->link_callback = link_callback;
simon 0:350011bf8be7 568 }
simon 0:350011bf8be7 569 }
simon 0:350011bf8be7 570 #endif /* LWIP_NETIF_LINK_CALLBACK */
simon 0:350011bf8be7 571
simon 0:350011bf8be7 572 #if ENABLE_LOOPBACK
simon 0:350011bf8be7 573 /**
simon 0:350011bf8be7 574 * Send an IP packet to be received on the same netif (loopif-like).
simon 0:350011bf8be7 575 * The pbuf is simply copied and handed back to netif->input.
simon 0:350011bf8be7 576 * In multithreaded mode, this is done directly since netif->input must put
simon 0:350011bf8be7 577 * the packet on a queue.
simon 0:350011bf8be7 578 * In callback mode, the packet is put on an internal queue and is fed to
simon 0:350011bf8be7 579 * netif->input by netif_poll().
simon 0:350011bf8be7 580 *
simon 0:350011bf8be7 581 * @param netif the lwip network interface structure
simon 0:350011bf8be7 582 * @param p the (IP) packet to 'send'
simon 0:350011bf8be7 583 * @param ipaddr the ip address to send the packet to (not used)
simon 0:350011bf8be7 584 * @return ERR_OK if the packet has been sent
simon 0:350011bf8be7 585 * ERR_MEM if the pbuf used to copy the packet couldn't be allocated
simon 0:350011bf8be7 586 */
simon 0:350011bf8be7 587 err_t
simon 0:350011bf8be7 588 netif_loop_output(struct netif *netif, struct pbuf *p,
simon 0:350011bf8be7 589 ip_addr_t *ipaddr)
simon 0:350011bf8be7 590 {
simon 0:350011bf8be7 591 struct pbuf *r;
simon 0:350011bf8be7 592 err_t err;
simon 0:350011bf8be7 593 struct pbuf *last;
simon 0:350011bf8be7 594 #if LWIP_LOOPBACK_MAX_PBUFS
simon 0:350011bf8be7 595 u8_t clen = 0;
simon 0:350011bf8be7 596 #endif /* LWIP_LOOPBACK_MAX_PBUFS */
simon 0:350011bf8be7 597 /* If we have a loopif, SNMP counters are adjusted for it,
simon 0:350011bf8be7 598 * if not they are adjusted for 'netif'. */
simon 0:350011bf8be7 599 #if LWIP_SNMP
simon 0:350011bf8be7 600 #if LWIP_HAVE_LOOPIF
simon 0:350011bf8be7 601 struct netif *stats_if = &loop_netif;
simon 0:350011bf8be7 602 #else /* LWIP_HAVE_LOOPIF */
simon 0:350011bf8be7 603 struct netif *stats_if = netif;
simon 0:350011bf8be7 604 #endif /* LWIP_HAVE_LOOPIF */
simon 0:350011bf8be7 605 #endif /* LWIP_SNMP */
simon 0:350011bf8be7 606 SYS_ARCH_DECL_PROTECT(lev);
simon 0:350011bf8be7 607 LWIP_UNUSED_ARG(ipaddr);
simon 0:350011bf8be7 608
simon 0:350011bf8be7 609 /* Allocate a new pbuf */
simon 0:350011bf8be7 610 r = pbuf_alloc(PBUF_LINK, p->tot_len, PBUF_RAM);
simon 0:350011bf8be7 611 if (r == NULL) {
simon 0:350011bf8be7 612 LINK_STATS_INC(link.memerr);
simon 0:350011bf8be7 613 LINK_STATS_INC(link.drop);
simon 0:350011bf8be7 614 snmp_inc_ifoutdiscards(stats_if);
simon 0:350011bf8be7 615 return ERR_MEM;
simon 0:350011bf8be7 616 }
simon 0:350011bf8be7 617 #if LWIP_LOOPBACK_MAX_PBUFS
simon 0:350011bf8be7 618 clen = pbuf_clen(r);
simon 0:350011bf8be7 619 /* check for overflow or too many pbuf on queue */
simon 0:350011bf8be7 620 if(((netif->loop_cnt_current + clen) < netif->loop_cnt_current) ||
simon 0:350011bf8be7 621 ((netif->loop_cnt_current + clen) > LWIP_LOOPBACK_MAX_PBUFS)) {
simon 0:350011bf8be7 622 pbuf_free(r);
simon 0:350011bf8be7 623 LINK_STATS_INC(link.memerr);
simon 0:350011bf8be7 624 LINK_STATS_INC(link.drop);
simon 0:350011bf8be7 625 snmp_inc_ifoutdiscards(stats_if);
simon 0:350011bf8be7 626 return ERR_MEM;
simon 0:350011bf8be7 627 }
simon 0:350011bf8be7 628 netif->loop_cnt_current += clen;
simon 0:350011bf8be7 629 #endif /* LWIP_LOOPBACK_MAX_PBUFS */
simon 0:350011bf8be7 630
simon 0:350011bf8be7 631 /* Copy the whole pbuf queue p into the single pbuf r */
simon 0:350011bf8be7 632 if ((err = pbuf_copy(r, p)) != ERR_OK) {
simon 0:350011bf8be7 633 pbuf_free(r);
simon 0:350011bf8be7 634 LINK_STATS_INC(link.memerr);
simon 0:350011bf8be7 635 LINK_STATS_INC(link.drop);
simon 0:350011bf8be7 636 snmp_inc_ifoutdiscards(stats_if);
simon 0:350011bf8be7 637 return err;
simon 0:350011bf8be7 638 }
simon 0:350011bf8be7 639
simon 0:350011bf8be7 640 /* Put the packet on a linked list which gets emptied through calling
simon 0:350011bf8be7 641 netif_poll(). */
simon 0:350011bf8be7 642
simon 0:350011bf8be7 643 /* let last point to the last pbuf in chain r */
simon 0:350011bf8be7 644 for (last = r; last->next != NULL; last = last->next);
simon 0:350011bf8be7 645
simon 0:350011bf8be7 646 SYS_ARCH_PROTECT(lev);
simon 0:350011bf8be7 647 if(netif->loop_first != NULL) {
simon 0:350011bf8be7 648 LWIP_ASSERT("if first != NULL, last must also be != NULL", netif->loop_last != NULL);
simon 0:350011bf8be7 649 netif->loop_last->next = r;
simon 0:350011bf8be7 650 netif->loop_last = last;
simon 0:350011bf8be7 651 } else {
simon 0:350011bf8be7 652 netif->loop_first = r;
simon 0:350011bf8be7 653 netif->loop_last = last;
simon 0:350011bf8be7 654 }
simon 0:350011bf8be7 655 SYS_ARCH_UNPROTECT(lev);
simon 0:350011bf8be7 656
simon 0:350011bf8be7 657 LINK_STATS_INC(link.xmit);
simon 0:350011bf8be7 658 snmp_add_ifoutoctets(stats_if, p->tot_len);
simon 0:350011bf8be7 659 snmp_inc_ifoutucastpkts(stats_if);
simon 0:350011bf8be7 660
simon 0:350011bf8be7 661 #if LWIP_NETIF_LOOPBACK_MULTITHREADING
simon 0:350011bf8be7 662 /* For multithreading environment, schedule a call to netif_poll */
simon 0:350011bf8be7 663 tcpip_callback((tcpip_callback_fn)netif_poll, netif);
simon 0:350011bf8be7 664 #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */
simon 0:350011bf8be7 665
simon 0:350011bf8be7 666 return ERR_OK;
simon 0:350011bf8be7 667 }
simon 0:350011bf8be7 668
simon 0:350011bf8be7 669 /**
simon 0:350011bf8be7 670 * Call netif_poll() in the main loop of your application. This is to prevent
simon 0:350011bf8be7 671 * reentering non-reentrant functions like tcp_input(). Packets passed to
simon 0:350011bf8be7 672 * netif_loop_output() are put on a list that is passed to netif->input() by
simon 0:350011bf8be7 673 * netif_poll().
simon 0:350011bf8be7 674 */
simon 0:350011bf8be7 675 void
simon 0:350011bf8be7 676 netif_poll(struct netif *netif)
simon 0:350011bf8be7 677 {
simon 0:350011bf8be7 678 struct pbuf *in;
simon 0:350011bf8be7 679 /* If we have a loopif, SNMP counters are adjusted for it,
simon 0:350011bf8be7 680 * if not they are adjusted for 'netif'. */
simon 0:350011bf8be7 681 #if LWIP_SNMP
simon 0:350011bf8be7 682 #if LWIP_HAVE_LOOPIF
simon 0:350011bf8be7 683 struct netif *stats_if = &loop_netif;
simon 0:350011bf8be7 684 #else /* LWIP_HAVE_LOOPIF */
simon 0:350011bf8be7 685 struct netif *stats_if = netif;
simon 0:350011bf8be7 686 #endif /* LWIP_HAVE_LOOPIF */
simon 0:350011bf8be7 687 #endif /* LWIP_SNMP */
simon 0:350011bf8be7 688 SYS_ARCH_DECL_PROTECT(lev);
simon 0:350011bf8be7 689
simon 0:350011bf8be7 690 do {
simon 0:350011bf8be7 691 /* Get a packet from the list. With SYS_LIGHTWEIGHT_PROT=1, this is protected */
simon 0:350011bf8be7 692 SYS_ARCH_PROTECT(lev);
simon 0:350011bf8be7 693 in = netif->loop_first;
simon 0:350011bf8be7 694 if (in != NULL) {
simon 0:350011bf8be7 695 struct pbuf *in_end = in;
simon 0:350011bf8be7 696 #if LWIP_LOOPBACK_MAX_PBUFS
simon 0:350011bf8be7 697 u8_t clen = pbuf_clen(in);
simon 0:350011bf8be7 698 /* adjust the number of pbufs on queue */
simon 0:350011bf8be7 699 LWIP_ASSERT("netif->loop_cnt_current underflow",
simon 0:350011bf8be7 700 ((netif->loop_cnt_current - clen) < netif->loop_cnt_current));
simon 0:350011bf8be7 701 netif->loop_cnt_current -= clen;
simon 0:350011bf8be7 702 #endif /* LWIP_LOOPBACK_MAX_PBUFS */
simon 0:350011bf8be7 703 while (in_end->len != in_end->tot_len) {
simon 0:350011bf8be7 704 LWIP_ASSERT("bogus pbuf: len != tot_len but next == NULL!", in_end->next != NULL);
simon 0:350011bf8be7 705 in_end = in_end->next;
simon 0:350011bf8be7 706 }
simon 0:350011bf8be7 707 /* 'in_end' now points to the last pbuf from 'in' */
simon 0:350011bf8be7 708 if (in_end == netif->loop_last) {
simon 0:350011bf8be7 709 /* this was the last pbuf in the list */
simon 0:350011bf8be7 710 netif->loop_first = netif->loop_last = NULL;
simon 0:350011bf8be7 711 } else {
simon 0:350011bf8be7 712 /* pop the pbuf off the list */
simon 0:350011bf8be7 713 netif->loop_first = in_end->next;
simon 0:350011bf8be7 714 LWIP_ASSERT("should not be null since first != last!", netif->loop_first != NULL);
simon 0:350011bf8be7 715 }
simon 0:350011bf8be7 716 /* De-queue the pbuf from its successors on the 'loop_' list. */
simon 0:350011bf8be7 717 in_end->next = NULL;
simon 0:350011bf8be7 718 }
simon 0:350011bf8be7 719 SYS_ARCH_UNPROTECT(lev);
simon 0:350011bf8be7 720
simon 0:350011bf8be7 721 if (in != NULL) {
simon 0:350011bf8be7 722 LINK_STATS_INC(link.recv);
simon 0:350011bf8be7 723 snmp_add_ifinoctets(stats_if, in->tot_len);
simon 0:350011bf8be7 724 snmp_inc_ifinucastpkts(stats_if);
simon 0:350011bf8be7 725 /* loopback packets are always IP packets! */
simon 0:350011bf8be7 726 if (ip_input(in, netif) != ERR_OK) {
simon 0:350011bf8be7 727 pbuf_free(in);
simon 0:350011bf8be7 728 }
simon 0:350011bf8be7 729 /* Don't reference the packet any more! */
simon 0:350011bf8be7 730 in = NULL;
simon 0:350011bf8be7 731 }
simon 0:350011bf8be7 732 /* go on while there is a packet on the list */
simon 0:350011bf8be7 733 } while (netif->loop_first != NULL);
simon 0:350011bf8be7 734 }
simon 0:350011bf8be7 735
simon 0:350011bf8be7 736 #if !LWIP_NETIF_LOOPBACK_MULTITHREADING
simon 0:350011bf8be7 737 /**
simon 0:350011bf8be7 738 * Calls netif_poll() for every netif on the netif_list.
simon 0:350011bf8be7 739 */
simon 0:350011bf8be7 740 void
simon 0:350011bf8be7 741 netif_poll_all(void)
simon 0:350011bf8be7 742 {
simon 0:350011bf8be7 743 struct netif *netif = netif_list;
simon 0:350011bf8be7 744 /* loop through netifs */
simon 0:350011bf8be7 745 while (netif != NULL) {
simon 0:350011bf8be7 746 netif_poll(netif);
simon 0:350011bf8be7 747 /* proceed to next network interface */
simon 0:350011bf8be7 748 netif = netif->next;
simon 0:350011bf8be7 749 }
simon 0:350011bf8be7 750 }
simon 0:350011bf8be7 751 #endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */
simon 0:350011bf8be7 752 #endif /* ENABLE_LOOPBACK */