mbed unsupported / lwip

A version of LWIP, provided for backwards compatibility.

Dependents:   AA_DemoBoard DemoBoard HelloServerDemo DemoBoard_RangeIndicator ... more

trunk/Core/lwIP/core/netif.c@0:5e1631496985, 2012-05-08 (annotated)

Committer:
root@mbed.org
Date:
Tue May 08 15:32:10 2012 +0100
Revision:
0:5e1631496985
initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
root@mbed.org 0:5e1631496985 1 /**
root@mbed.org 0:5e1631496985 2 * @file
root@mbed.org 0:5e1631496985 3 * lwIP network interface abstraction
root@mbed.org 0:5e1631496985 4 *
root@mbed.org 0:5e1631496985 5 */
root@mbed.org 0:5e1631496985 6
root@mbed.org 0:5e1631496985 7 /*
root@mbed.org 0:5e1631496985 8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
root@mbed.org 0:5e1631496985 9 * All rights reserved.
root@mbed.org 0:5e1631496985 10 *
root@mbed.org 0:5e1631496985 11 * Redistribution and use in source and binary forms, with or without modification,
root@mbed.org 0:5e1631496985 12 * are permitted provided that the following conditions are met:
root@mbed.org 0:5e1631496985 13 *
root@mbed.org 0:5e1631496985 14 * 1. Redistributions of source code must retain the above copyright notice,
root@mbed.org 0:5e1631496985 15 * this list of conditions and the following disclaimer.
root@mbed.org 0:5e1631496985 16 * 2. Redistributions in binary form must reproduce the above copyright notice,
root@mbed.org 0:5e1631496985 17 * this list of conditions and the following disclaimer in the documentation
root@mbed.org 0:5e1631496985 18 * and/or other materials provided with the distribution.
root@mbed.org 0:5e1631496985 19 * 3. The name of the author may not be used to endorse or promote products
root@mbed.org 0:5e1631496985 20 * derived from this software without specific prior written permission.
root@mbed.org 0:5e1631496985 21 *
root@mbed.org 0:5e1631496985 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
root@mbed.org 0:5e1631496985 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
root@mbed.org 0:5e1631496985 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
root@mbed.org 0:5e1631496985 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
root@mbed.org 0:5e1631496985 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
root@mbed.org 0:5e1631496985 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
root@mbed.org 0:5e1631496985 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
root@mbed.org 0:5e1631496985 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
root@mbed.org 0:5e1631496985 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
root@mbed.org 0:5e1631496985 31 * OF SUCH DAMAGE.
root@mbed.org 0:5e1631496985 32 *
root@mbed.org 0:5e1631496985 33 * This file is part of the lwIP TCP/IP stack.
root@mbed.org 0:5e1631496985 34 *
root@mbed.org 0:5e1631496985 35 * Author: Adam Dunkels <adam@sics.se>
root@mbed.org 0:5e1631496985 36 *
root@mbed.org 0:5e1631496985 37 */
root@mbed.org 0:5e1631496985 38
root@mbed.org 0:5e1631496985 39 #include "lwip/opt.h"
root@mbed.org 0:5e1631496985 40
root@mbed.org 0:5e1631496985 41 #include "lwip/def.h"
root@mbed.org 0:5e1631496985 42 #include "lwip/ip_addr.h"
root@mbed.org 0:5e1631496985 43 #include "lwip/netif.h"
root@mbed.org 0:5e1631496985 44 #include "lwip/tcp.h"
root@mbed.org 0:5e1631496985 45 #include "lwip/snmp.h"
root@mbed.org 0:5e1631496985 46 #include "lwip/igmp.h"
root@mbed.org 0:5e1631496985 47 #include "netif/etharp.h"
root@mbed.org 0:5e1631496985 48 #if ENABLE_LOOPBACK
root@mbed.org 0:5e1631496985 49 #include "lwip/sys.h"
root@mbed.org 0:5e1631496985 50 #if LWIP_NETIF_LOOPBACK_MULTITHREADING
root@mbed.org 0:5e1631496985 51 #include "lwip/tcpip.h"
root@mbed.org 0:5e1631496985 52 #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */
root@mbed.org 0:5e1631496985 53 #endif /* ENABLE_LOOPBACK */
root@mbed.org 0:5e1631496985 54
root@mbed.org 0:5e1631496985 55 #if LWIP_AUTOIP
root@mbed.org 0:5e1631496985 56 #include "lwip/autoip.h"
root@mbed.org 0:5e1631496985 57 #endif /* LWIP_AUTOIP */
root@mbed.org 0:5e1631496985 58 #if LWIP_DHCP
root@mbed.org 0:5e1631496985 59 #include "lwip/dhcp.h"
root@mbed.org 0:5e1631496985 60 #endif /* LWIP_DHCP */
root@mbed.org 0:5e1631496985 61
root@mbed.org 0:5e1631496985 62 #if LWIP_NETIF_STATUS_CALLBACK
root@mbed.org 0:5e1631496985 63 #define NETIF_STATUS_CALLBACK(n) { if (n->status_callback) (n->status_callback)(n); }
root@mbed.org 0:5e1631496985 64 #else
root@mbed.org 0:5e1631496985 65 #define NETIF_STATUS_CALLBACK(n) { /* NOP */ }
root@mbed.org 0:5e1631496985 66 #endif /* LWIP_NETIF_STATUS_CALLBACK */
root@mbed.org 0:5e1631496985 67
root@mbed.org 0:5e1631496985 68 #if LWIP_NETIF_LINK_CALLBACK
root@mbed.org 0:5e1631496985 69 #define NETIF_LINK_CALLBACK(n) { if (n->link_callback) (n->link_callback)(n); }
root@mbed.org 0:5e1631496985 70 #else
root@mbed.org 0:5e1631496985 71 #define NETIF_LINK_CALLBACK(n) { /* NOP */ }
root@mbed.org 0:5e1631496985 72 #endif /* LWIP_NETIF_LINK_CALLBACK */
root@mbed.org 0:5e1631496985 73
root@mbed.org 0:5e1631496985 74 struct netif *netif_list;
root@mbed.org 0:5e1631496985 75 struct netif *netif_default;
root@mbed.org 0:5e1631496985 76
root@mbed.org 0:5e1631496985 77 /**
root@mbed.org 0:5e1631496985 78 * Add a network interface to the list of lwIP netifs.
root@mbed.org 0:5e1631496985 79 *
root@mbed.org 0:5e1631496985 80 * @param netif a pre-allocated netif structure
root@mbed.org 0:5e1631496985 81 * @param ipaddr IP address for the new netif
root@mbed.org 0:5e1631496985 82 * @param netmask network mask for the new netif
root@mbed.org 0:5e1631496985 83 * @param gw default gateway IP address for the new netif
root@mbed.org 0:5e1631496985 84 * @param state opaque data passed to the new netif
root@mbed.org 0:5e1631496985 85 * @param init callback function that initializes the interface
root@mbed.org 0:5e1631496985 86 * @param input callback function that is called to pass
root@mbed.org 0:5e1631496985 87 * ingress packets up in the protocol layer stack.
root@mbed.org 0:5e1631496985 88 *
root@mbed.org 0:5e1631496985 89 * @return netif, or NULL if failed.
root@mbed.org 0:5e1631496985 90 */
root@mbed.org 0:5e1631496985 91 struct netif *
root@mbed.org 0:5e1631496985 92 netif_add(struct netif *netif, struct ip_addr *ipaddr, struct ip_addr *netmask,
root@mbed.org 0:5e1631496985 93 struct ip_addr *gw,
root@mbed.org 0:5e1631496985 94 void *state,
root@mbed.org 0:5e1631496985 95 err_t (* init)(struct netif *netif),
root@mbed.org 0:5e1631496985 96 err_t (* input)(struct pbuf *p, struct netif *netif))
root@mbed.org 0:5e1631496985 97 {
root@mbed.org 0:5e1631496985 98 static u8_t netifnum = 0;
root@mbed.org 0:5e1631496985 99
root@mbed.org 0:5e1631496985 100 /* reset new interface configuration state */
root@mbed.org 0:5e1631496985 101 netif->ip_addr.addr = 0;
root@mbed.org 0:5e1631496985 102 netif->netmask.addr = 0;
root@mbed.org 0:5e1631496985 103 netif->gw.addr = 0;
root@mbed.org 0:5e1631496985 104 netif->flags = 0;
root@mbed.org 0:5e1631496985 105 #if LWIP_DHCP
root@mbed.org 0:5e1631496985 106 /* netif not under DHCP control by default */
root@mbed.org 0:5e1631496985 107 netif->dhcp = NULL;
root@mbed.org 0:5e1631496985 108 #endif /* LWIP_DHCP */
root@mbed.org 0:5e1631496985 109 #if LWIP_AUTOIP
root@mbed.org 0:5e1631496985 110 /* netif not under AutoIP control by default */
root@mbed.org 0:5e1631496985 111 netif->autoip = NULL;
root@mbed.org 0:5e1631496985 112 #endif /* LWIP_AUTOIP */
root@mbed.org 0:5e1631496985 113 #if LWIP_NETIF_STATUS_CALLBACK
root@mbed.org 0:5e1631496985 114 netif->status_callback = NULL;
root@mbed.org 0:5e1631496985 115 #endif /* LWIP_NETIF_STATUS_CALLBACK */
root@mbed.org 0:5e1631496985 116 #if LWIP_NETIF_LINK_CALLBACK
root@mbed.org 0:5e1631496985 117 netif->link_callback = NULL;
root@mbed.org 0:5e1631496985 118 #endif /* LWIP_NETIF_LINK_CALLBACK */
root@mbed.org 0:5e1631496985 119 #if LWIP_IGMP
root@mbed.org 0:5e1631496985 120 netif->igmp_mac_filter = NULL;
root@mbed.org 0:5e1631496985 121 #endif /* LWIP_IGMP */
root@mbed.org 0:5e1631496985 122 #if ENABLE_LOOPBACK
root@mbed.org 0:5e1631496985 123 netif->loop_first = NULL;
root@mbed.org 0:5e1631496985 124 netif->loop_last = NULL;
root@mbed.org 0:5e1631496985 125 #endif /* ENABLE_LOOPBACK */
root@mbed.org 0:5e1631496985 126
root@mbed.org 0:5e1631496985 127 /* remember netif specific state information data */
root@mbed.org 0:5e1631496985 128 netif->state = state;
root@mbed.org 0:5e1631496985 129 netif->num = netifnum++;
root@mbed.org 0:5e1631496985 130 netif->input = input;
root@mbed.org 0:5e1631496985 131 #if LWIP_NETIF_HWADDRHINT
root@mbed.org 0:5e1631496985 132 netif->addr_hint = NULL;
root@mbed.org 0:5e1631496985 133 #endif /* LWIP_NETIF_HWADDRHINT*/
root@mbed.org 0:5e1631496985 134 #if ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS
root@mbed.org 0:5e1631496985 135 netif->loop_cnt_current = 0;
root@mbed.org 0:5e1631496985 136 #endif /* ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS */
root@mbed.org 0:5e1631496985 137
root@mbed.org 0:5e1631496985 138 netif_set_addr(netif, ipaddr, netmask, gw);
root@mbed.org 0:5e1631496985 139
root@mbed.org 0:5e1631496985 140 /* call user specified initialization function for netif */
root@mbed.org 0:5e1631496985 141 if (init(netif) != ERR_OK) {
root@mbed.org 0:5e1631496985 142 return NULL;
root@mbed.org 0:5e1631496985 143 }
root@mbed.org 0:5e1631496985 144
root@mbed.org 0:5e1631496985 145 /* add this netif to the list */
root@mbed.org 0:5e1631496985 146 netif->next = netif_list;
root@mbed.org 0:5e1631496985 147 netif_list = netif;
root@mbed.org 0:5e1631496985 148 snmp_inc_iflist();
root@mbed.org 0:5e1631496985 149
root@mbed.org 0:5e1631496985 150 #if LWIP_IGMP
root@mbed.org 0:5e1631496985 151 /* start IGMP processing */
root@mbed.org 0:5e1631496985 152 if (netif->flags & NETIF_FLAG_IGMP) {
root@mbed.org 0:5e1631496985 153 igmp_start( netif);
root@mbed.org 0:5e1631496985 154 }
root@mbed.org 0:5e1631496985 155 #endif /* LWIP_IGMP */
root@mbed.org 0:5e1631496985 156
root@mbed.org 0:5e1631496985 157 LWIP_DEBUGF(NETIF_DEBUG, ("netif: added interface %c%c IP addr ",
root@mbed.org 0:5e1631496985 158 netif->name[0], netif->name[1]));
root@mbed.org 0:5e1631496985 159 ip_addr_debug_print(NETIF_DEBUG, ipaddr);
root@mbed.org 0:5e1631496985 160 LWIP_DEBUGF(NETIF_DEBUG, (" netmask "));
root@mbed.org 0:5e1631496985 161 ip_addr_debug_print(NETIF_DEBUG, netmask);
root@mbed.org 0:5e1631496985 162 LWIP_DEBUGF(NETIF_DEBUG, (" gw "));
root@mbed.org 0:5e1631496985 163 ip_addr_debug_print(NETIF_DEBUG, gw);
root@mbed.org 0:5e1631496985 164 LWIP_DEBUGF(NETIF_DEBUG, ("\n"));
root@mbed.org 0:5e1631496985 165 return netif;
root@mbed.org 0:5e1631496985 166 }
root@mbed.org 0:5e1631496985 167
root@mbed.org 0:5e1631496985 168 /**
root@mbed.org 0:5e1631496985 169 * Change IP address configuration for a network interface (including netmask
root@mbed.org 0:5e1631496985 170 * and default gateway).
root@mbed.org 0:5e1631496985 171 *
root@mbed.org 0:5e1631496985 172 * @param netif the network interface to change
root@mbed.org 0:5e1631496985 173 * @param ipaddr the new IP address
root@mbed.org 0:5e1631496985 174 * @param netmask the new netmask
root@mbed.org 0:5e1631496985 175 * @param gw the new default gateway
root@mbed.org 0:5e1631496985 176 */
root@mbed.org 0:5e1631496985 177 void
root@mbed.org 0:5e1631496985 178 netif_set_addr(struct netif *netif, struct ip_addr *ipaddr, struct ip_addr *netmask,
root@mbed.org 0:5e1631496985 179 struct ip_addr *gw)
root@mbed.org 0:5e1631496985 180 {
root@mbed.org 0:5e1631496985 181 netif_set_ipaddr(netif, ipaddr);
root@mbed.org 0:5e1631496985 182 netif_set_netmask(netif, netmask);
root@mbed.org 0:5e1631496985 183 netif_set_gw(netif, gw);
root@mbed.org 0:5e1631496985 184 }
root@mbed.org 0:5e1631496985 185
root@mbed.org 0:5e1631496985 186 /**
root@mbed.org 0:5e1631496985 187 * Remove a network interface from the list of lwIP netifs.
root@mbed.org 0:5e1631496985 188 *
root@mbed.org 0:5e1631496985 189 * @param netif the network interface to remove
root@mbed.org 0:5e1631496985 190 */
root@mbed.org 0:5e1631496985 191 void netif_remove(struct netif * netif)
root@mbed.org 0:5e1631496985 192 {
root@mbed.org 0:5e1631496985 193 if ( netif == NULL ) return;
root@mbed.org 0:5e1631496985 194
root@mbed.org 0:5e1631496985 195 #if LWIP_IGMP
root@mbed.org 0:5e1631496985 196 /* stop IGMP processing */
root@mbed.org 0:5e1631496985 197 if (netif->flags & NETIF_FLAG_IGMP) {
root@mbed.org 0:5e1631496985 198 igmp_stop( netif);
root@mbed.org 0:5e1631496985 199 }
root@mbed.org 0:5e1631496985 200 #endif /* LWIP_IGMP */
root@mbed.org 0:5e1631496985 201
root@mbed.org 0:5e1631496985 202 snmp_delete_ipaddridx_tree(netif);
root@mbed.org 0:5e1631496985 203
root@mbed.org 0:5e1631496985 204 /* is it the first netif? */
root@mbed.org 0:5e1631496985 205 if (netif_list == netif) {
root@mbed.org 0:5e1631496985 206 netif_list = netif->next;
root@mbed.org 0:5e1631496985 207 snmp_dec_iflist();
root@mbed.org 0:5e1631496985 208 }
root@mbed.org 0:5e1631496985 209 else {
root@mbed.org 0:5e1631496985 210 /* look for netif further down the list */
root@mbed.org 0:5e1631496985 211 struct netif * tmpNetif;
root@mbed.org 0:5e1631496985 212 for (tmpNetif = netif_list; tmpNetif != NULL; tmpNetif = tmpNetif->next) {
root@mbed.org 0:5e1631496985 213 if (tmpNetif->next == netif) {
root@mbed.org 0:5e1631496985 214 tmpNetif->next = netif->next;
root@mbed.org 0:5e1631496985 215 snmp_dec_iflist();
root@mbed.org 0:5e1631496985 216 break;
root@mbed.org 0:5e1631496985 217 }
root@mbed.org 0:5e1631496985 218 }
root@mbed.org 0:5e1631496985 219 if (tmpNetif == NULL)
root@mbed.org 0:5e1631496985 220 return; /* we didn't find any netif today */
root@mbed.org 0:5e1631496985 221 }
root@mbed.org 0:5e1631496985 222 /* this netif is default? */
root@mbed.org 0:5e1631496985 223 if (netif_default == netif)
root@mbed.org 0:5e1631496985 224 /* reset default netif */
root@mbed.org 0:5e1631496985 225 netif_set_default(NULL);
root@mbed.org 0:5e1631496985 226 LWIP_DEBUGF( NETIF_DEBUG, ("netif_remove: removed netif\n") );
root@mbed.org 0:5e1631496985 227 }
root@mbed.org 0:5e1631496985 228
root@mbed.org 0:5e1631496985 229 /**
root@mbed.org 0:5e1631496985 230 * Find a network interface by searching for its name
root@mbed.org 0:5e1631496985 231 *
root@mbed.org 0:5e1631496985 232 * @param name the name of the netif (like netif->name) plus concatenated number
root@mbed.org 0:5e1631496985 233 * in ascii representation (e.g. 'en0')
root@mbed.org 0:5e1631496985 234 */
root@mbed.org 0:5e1631496985 235 struct netif *
root@mbed.org 0:5e1631496985 236 netif_find(char *name)
root@mbed.org 0:5e1631496985 237 {
root@mbed.org 0:5e1631496985 238 struct netif *netif;
root@mbed.org 0:5e1631496985 239 u8_t num;
root@mbed.org 0:5e1631496985 240
root@mbed.org 0:5e1631496985 241 if (name == NULL) {
root@mbed.org 0:5e1631496985 242 return NULL;
root@mbed.org 0:5e1631496985 243 }
root@mbed.org 0:5e1631496985 244
root@mbed.org 0:5e1631496985 245 num = name[2] - '0';
root@mbed.org 0:5e1631496985 246
root@mbed.org 0:5e1631496985 247 for(netif = netif_list; netif != NULL; netif = netif->next) {
root@mbed.org 0:5e1631496985 248 if (num == netif->num &&
root@mbed.org 0:5e1631496985 249 name[0] == netif->name[0] &&
root@mbed.org 0:5e1631496985 250 name[1] == netif->name[1]) {
root@mbed.org 0:5e1631496985 251 LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: found %c%c\n", name[0], name[1]));
root@mbed.org 0:5e1631496985 252 return netif;
root@mbed.org 0:5e1631496985 253 }
root@mbed.org 0:5e1631496985 254 }
root@mbed.org 0:5e1631496985 255 LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: didn't find %c%c\n", name[0], name[1]));
root@mbed.org 0:5e1631496985 256 return NULL;
root@mbed.org 0:5e1631496985 257 }
root@mbed.org 0:5e1631496985 258
root@mbed.org 0:5e1631496985 259 /**
root@mbed.org 0:5e1631496985 260 * Change the IP address of a network interface
root@mbed.org 0:5e1631496985 261 *
root@mbed.org 0:5e1631496985 262 * @param netif the network interface to change
root@mbed.org 0:5e1631496985 263 * @param ipaddr the new IP address
root@mbed.org 0:5e1631496985 264 *
root@mbed.org 0:5e1631496985 265 * @note call netif_set_addr() if you also want to change netmask and
root@mbed.org 0:5e1631496985 266 * default gateway
root@mbed.org 0:5e1631496985 267 */
root@mbed.org 0:5e1631496985 268 void
root@mbed.org 0:5e1631496985 269 netif_set_ipaddr(struct netif *netif, struct ip_addr *ipaddr)
root@mbed.org 0:5e1631496985 270 {
root@mbed.org 0:5e1631496985 271 /* TODO: Handling of obsolete pcbs */
root@mbed.org 0:5e1631496985 272 /* See: http://mail.gnu.org/archive/html/lwip-users/2003-03/msg00118.html */
root@mbed.org 0:5e1631496985 273 #if LWIP_TCP
root@mbed.org 0:5e1631496985 274 struct tcp_pcb *pcb;
root@mbed.org 0:5e1631496985 275 struct tcp_pcb_listen *lpcb;
root@mbed.org 0:5e1631496985 276
root@mbed.org 0:5e1631496985 277 /* address is actually being changed? */
root@mbed.org 0:5e1631496985 278 if ((ip_addr_cmp(ipaddr, &(netif->ip_addr))) == 0)
root@mbed.org 0:5e1631496985 279 {
root@mbed.org 0:5e1631496985 280 /* extern struct tcp_pcb *tcp_active_pcbs; defined by tcp.h */
root@mbed.org 0:5e1631496985 281 LWIP_DEBUGF(NETIF_DEBUG | 1, ("netif_set_ipaddr: netif address being changed\n"));
root@mbed.org 0:5e1631496985 282 pcb = tcp_active_pcbs;
root@mbed.org 0:5e1631496985 283 while (pcb != NULL) {
root@mbed.org 0:5e1631496985 284 /* PCB bound to current local interface address? */
root@mbed.org 0:5e1631496985 285 if (ip_addr_cmp(&(pcb->local_ip), &(netif->ip_addr))) {
root@mbed.org 0:5e1631496985 286 /* this connection must be aborted */
root@mbed.org 0:5e1631496985 287 struct tcp_pcb *next = pcb->next;
root@mbed.org 0:5e1631496985 288 LWIP_DEBUGF(NETIF_DEBUG | 1, ("netif_set_ipaddr: aborting TCP pcb %p\n", (void *)pcb));
root@mbed.org 0:5e1631496985 289 tcp_abort(pcb);
root@mbed.org 0:5e1631496985 290 pcb = next;
root@mbed.org 0:5e1631496985 291 } else {
root@mbed.org 0:5e1631496985 292 pcb = pcb->next;
root@mbed.org 0:5e1631496985 293 }
root@mbed.org 0:5e1631496985 294 }
root@mbed.org 0:5e1631496985 295 for (lpcb = tcp_listen_pcbs.listen_pcbs; lpcb != NULL; lpcb = lpcb->next) {
root@mbed.org 0:5e1631496985 296 /* PCB bound to current local interface address? */
root@mbed.org 0:5e1631496985 297 if ((!(ip_addr_isany(&(lpcb->local_ip)))) &&
root@mbed.org 0:5e1631496985 298 (ip_addr_cmp(&(lpcb->local_ip), &(netif->ip_addr)))) {
root@mbed.org 0:5e1631496985 299 /* The PCB is listening to the old ipaddr and
root@mbed.org 0:5e1631496985 300 * is set to listen to the new one instead */
root@mbed.org 0:5e1631496985 301 ip_addr_set(&(lpcb->local_ip), ipaddr);
root@mbed.org 0:5e1631496985 302 }
root@mbed.org 0:5e1631496985 303 }
root@mbed.org 0:5e1631496985 304 }
root@mbed.org 0:5e1631496985 305 #endif
root@mbed.org 0:5e1631496985 306 snmp_delete_ipaddridx_tree(netif);
root@mbed.org 0:5e1631496985 307 snmp_delete_iprteidx_tree(0,netif);
root@mbed.org 0:5e1631496985 308 /* set new IP address to netif */
root@mbed.org 0:5e1631496985 309 ip_addr_set(&(netif->ip_addr), ipaddr);
root@mbed.org 0:5e1631496985 310 snmp_insert_ipaddridx_tree(netif);
root@mbed.org 0:5e1631496985 311 snmp_insert_iprteidx_tree(0,netif);
root@mbed.org 0:5e1631496985 312
root@mbed.org 0:5e1631496985 313 LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE | 3, ("netif: IP address of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n",
root@mbed.org 0:5e1631496985 314 netif->name[0], netif->name[1],
root@mbed.org 0:5e1631496985 315 ip4_addr1(&netif->ip_addr),
root@mbed.org 0:5e1631496985 316 ip4_addr2(&netif->ip_addr),
root@mbed.org 0:5e1631496985 317 ip4_addr3(&netif->ip_addr),
root@mbed.org 0:5e1631496985 318 ip4_addr4(&netif->ip_addr)));
root@mbed.org 0:5e1631496985 319 }
root@mbed.org 0:5e1631496985 320
root@mbed.org 0:5e1631496985 321 /**
root@mbed.org 0:5e1631496985 322 * Change the default gateway for a network interface
root@mbed.org 0:5e1631496985 323 *
root@mbed.org 0:5e1631496985 324 * @param netif the network interface to change
root@mbed.org 0:5e1631496985 325 * @param gw the new default gateway
root@mbed.org 0:5e1631496985 326 *
root@mbed.org 0:5e1631496985 327 * @note call netif_set_addr() if you also want to change ip address and netmask
root@mbed.org 0:5e1631496985 328 */
root@mbed.org 0:5e1631496985 329 void
root@mbed.org 0:5e1631496985 330 netif_set_gw(struct netif *netif, struct ip_addr *gw)
root@mbed.org 0:5e1631496985 331 {
root@mbed.org 0:5e1631496985 332 ip_addr_set(&(netif->gw), gw);
root@mbed.org 0:5e1631496985 333 LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE | 3, ("netif: GW address of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n",
root@mbed.org 0:5e1631496985 334 netif->name[0], netif->name[1],
root@mbed.org 0:5e1631496985 335 ip4_addr1(&netif->gw),
root@mbed.org 0:5e1631496985 336 ip4_addr2(&netif->gw),
root@mbed.org 0:5e1631496985 337 ip4_addr3(&netif->gw),
root@mbed.org 0:5e1631496985 338 ip4_addr4(&netif->gw)));
root@mbed.org 0:5e1631496985 339 }
root@mbed.org 0:5e1631496985 340
root@mbed.org 0:5e1631496985 341 /**
root@mbed.org 0:5e1631496985 342 * Change the netmask of a network interface
root@mbed.org 0:5e1631496985 343 *
root@mbed.org 0:5e1631496985 344 * @param netif the network interface to change
root@mbed.org 0:5e1631496985 345 * @param netmask the new netmask
root@mbed.org 0:5e1631496985 346 *
root@mbed.org 0:5e1631496985 347 * @note call netif_set_addr() if you also want to change ip address and
root@mbed.org 0:5e1631496985 348 * default gateway
root@mbed.org 0:5e1631496985 349 */
root@mbed.org 0:5e1631496985 350 void
root@mbed.org 0:5e1631496985 351 netif_set_netmask(struct netif *netif, struct ip_addr *netmask)
root@mbed.org 0:5e1631496985 352 {
root@mbed.org 0:5e1631496985 353 snmp_delete_iprteidx_tree(0, netif);
root@mbed.org 0:5e1631496985 354 /* set new netmask to netif */
root@mbed.org 0:5e1631496985 355 ip_addr_set(&(netif->netmask), netmask);
root@mbed.org 0:5e1631496985 356 snmp_insert_iprteidx_tree(0, netif);
root@mbed.org 0:5e1631496985 357 LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE | 3, ("netif: netmask of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n",
root@mbed.org 0:5e1631496985 358 netif->name[0], netif->name[1],
root@mbed.org 0:5e1631496985 359 ip4_addr1(&netif->netmask),
root@mbed.org 0:5e1631496985 360 ip4_addr2(&netif->netmask),
root@mbed.org 0:5e1631496985 361 ip4_addr3(&netif->netmask),
root@mbed.org 0:5e1631496985 362 ip4_addr4(&netif->netmask)));
root@mbed.org 0:5e1631496985 363 }
root@mbed.org 0:5e1631496985 364
root@mbed.org 0:5e1631496985 365 /**
root@mbed.org 0:5e1631496985 366 * Set a network interface as the default network interface
root@mbed.org 0:5e1631496985 367 * (used to output all packets for which no specific route is found)
root@mbed.org 0:5e1631496985 368 *
root@mbed.org 0:5e1631496985 369 * @param netif the default network interface
root@mbed.org 0:5e1631496985 370 */
root@mbed.org 0:5e1631496985 371 void
root@mbed.org 0:5e1631496985 372 netif_set_default(struct netif *netif)
root@mbed.org 0:5e1631496985 373 {
root@mbed.org 0:5e1631496985 374 if (netif == NULL)
root@mbed.org 0:5e1631496985 375 {
root@mbed.org 0:5e1631496985 376 /* remove default route */
root@mbed.org 0:5e1631496985 377 snmp_delete_iprteidx_tree(1, netif);
root@mbed.org 0:5e1631496985 378 }
root@mbed.org 0:5e1631496985 379 else
root@mbed.org 0:5e1631496985 380 {
root@mbed.org 0:5e1631496985 381 /* install default route */
root@mbed.org 0:5e1631496985 382 snmp_insert_iprteidx_tree(1, netif);
root@mbed.org 0:5e1631496985 383 }
root@mbed.org 0:5e1631496985 384 netif_default = netif;
root@mbed.org 0:5e1631496985 385 LWIP_DEBUGF(NETIF_DEBUG, ("netif: setting default interface %c%c\n",
root@mbed.org 0:5e1631496985 386 netif ? netif->name[0] : '\'', netif ? netif->name[1] : '\''));
root@mbed.org 0:5e1631496985 387 }
root@mbed.org 0:5e1631496985 388
root@mbed.org 0:5e1631496985 389 /**
root@mbed.org 0:5e1631496985 390 * Bring an interface up, available for processing
root@mbed.org 0:5e1631496985 391 * traffic.
root@mbed.org 0:5e1631496985 392 *
root@mbed.org 0:5e1631496985 393 * @note: Enabling DHCP on a down interface will make it come
root@mbed.org 0:5e1631496985 394 * up once configured.
root@mbed.org 0:5e1631496985 395 *
root@mbed.org 0:5e1631496985 396 * @see dhcp_start()
root@mbed.org 0:5e1631496985 397 */
root@mbed.org 0:5e1631496985 398 void netif_set_up(struct netif *netif)
root@mbed.org 0:5e1631496985 399 {
root@mbed.org 0:5e1631496985 400 if ( !(netif->flags & NETIF_FLAG_UP )) {
root@mbed.org 0:5e1631496985 401 netif->flags |= NETIF_FLAG_UP;
root@mbed.org 0:5e1631496985 402
root@mbed.org 0:5e1631496985 403 #if LWIP_SNMP
root@mbed.org 0:5e1631496985 404 snmp_get_sysuptime(&netif->ts);
root@mbed.org 0:5e1631496985 405 #endif /* LWIP_SNMP */
root@mbed.org 0:5e1631496985 406
root@mbed.org 0:5e1631496985 407 NETIF_LINK_CALLBACK(netif);
root@mbed.org 0:5e1631496985 408 NETIF_STATUS_CALLBACK(netif);
root@mbed.org 0:5e1631496985 409
root@mbed.org 0:5e1631496985 410 #if LWIP_ARP
root@mbed.org 0:5e1631496985 411 /* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */
root@mbed.org 0:5e1631496985 412 if (netif->flags & NETIF_FLAG_ETHARP) {
root@mbed.org 0:5e1631496985 413 etharp_gratuitous(netif);
root@mbed.org 0:5e1631496985 414 }
root@mbed.org 0:5e1631496985 415 #endif /* LWIP_ARP */
root@mbed.org 0:5e1631496985 416
root@mbed.org 0:5e1631496985 417 #if LWIP_IGMP
root@mbed.org 0:5e1631496985 418 /* resend IGMP memberships */
root@mbed.org 0:5e1631496985 419 if (netif->flags & NETIF_FLAG_IGMP) {
root@mbed.org 0:5e1631496985 420 igmp_report_groups( netif);
root@mbed.org 0:5e1631496985 421 }
root@mbed.org 0:5e1631496985 422 #endif /* LWIP_IGMP */
root@mbed.org 0:5e1631496985 423 }
root@mbed.org 0:5e1631496985 424 }
root@mbed.org 0:5e1631496985 425
root@mbed.org 0:5e1631496985 426 /**
root@mbed.org 0:5e1631496985 427 * Bring an interface down, disabling any traffic processing.
root@mbed.org 0:5e1631496985 428 *
root@mbed.org 0:5e1631496985 429 * @note: Enabling DHCP on a down interface will make it come
root@mbed.org 0:5e1631496985 430 * up once configured.
root@mbed.org 0:5e1631496985 431 *
root@mbed.org 0:5e1631496985 432 * @see dhcp_start()
root@mbed.org 0:5e1631496985 433 */
root@mbed.org 0:5e1631496985 434 void netif_set_down(struct netif *netif)
root@mbed.org 0:5e1631496985 435 {
root@mbed.org 0:5e1631496985 436 if ( netif->flags & NETIF_FLAG_UP )
root@mbed.org 0:5e1631496985 437 {
root@mbed.org 0:5e1631496985 438 netif->flags &= ~NETIF_FLAG_UP;
root@mbed.org 0:5e1631496985 439 #if LWIP_SNMP
root@mbed.org 0:5e1631496985 440 snmp_get_sysuptime(&netif->ts);
root@mbed.org 0:5e1631496985 441 #endif
root@mbed.org 0:5e1631496985 442
root@mbed.org 0:5e1631496985 443 NETIF_LINK_CALLBACK(netif);
root@mbed.org 0:5e1631496985 444 NETIF_STATUS_CALLBACK(netif);
root@mbed.org 0:5e1631496985 445 }
root@mbed.org 0:5e1631496985 446 }
root@mbed.org 0:5e1631496985 447
root@mbed.org 0:5e1631496985 448 /**
root@mbed.org 0:5e1631496985 449 * Ask if an interface is up
root@mbed.org 0:5e1631496985 450 */
root@mbed.org 0:5e1631496985 451 u8_t netif_is_up(struct netif *netif)
root@mbed.org 0:5e1631496985 452 {
root@mbed.org 0:5e1631496985 453 return (netif->flags & NETIF_FLAG_UP)?1:0;
root@mbed.org 0:5e1631496985 454 }
root@mbed.org 0:5e1631496985 455
root@mbed.org 0:5e1631496985 456 #if LWIP_NETIF_STATUS_CALLBACK
root@mbed.org 0:5e1631496985 457 /**
root@mbed.org 0:5e1631496985 458 * Set callback to be called when interface is brought up/down
root@mbed.org 0:5e1631496985 459 */
root@mbed.org 0:5e1631496985 460 void netif_set_status_callback(struct netif *netif, void (* status_callback)(struct netif *netif ))
root@mbed.org 0:5e1631496985 461 {
root@mbed.org 0:5e1631496985 462 if ( netif )
root@mbed.org 0:5e1631496985 463 netif->status_callback = status_callback;
root@mbed.org 0:5e1631496985 464 }
root@mbed.org 0:5e1631496985 465 #endif /* LWIP_NETIF_STATUS_CALLBACK */
root@mbed.org 0:5e1631496985 466
root@mbed.org 0:5e1631496985 467 #if LWIP_NETIF_LINK_CALLBACK
root@mbed.org 0:5e1631496985 468 /**
root@mbed.org 0:5e1631496985 469 * Called by a driver when its link goes up
root@mbed.org 0:5e1631496985 470 */
root@mbed.org 0:5e1631496985 471 void netif_set_link_up(struct netif *netif )
root@mbed.org 0:5e1631496985 472 {
root@mbed.org 0:5e1631496985 473 netif->flags |= NETIF_FLAG_LINK_UP;
root@mbed.org 0:5e1631496985 474
root@mbed.org 0:5e1631496985 475 #if LWIP_DHCP
root@mbed.org 0:5e1631496985 476 if (netif->dhcp) {
root@mbed.org 0:5e1631496985 477 dhcp_network_changed(netif);
root@mbed.org 0:5e1631496985 478 }
root@mbed.org 0:5e1631496985 479 #endif /* LWIP_DHCP */
root@mbed.org 0:5e1631496985 480
root@mbed.org 0:5e1631496985 481 #if LWIP_AUTOIP
root@mbed.org 0:5e1631496985 482 if (netif->autoip) {
root@mbed.org 0:5e1631496985 483 autoip_network_changed(netif);
root@mbed.org 0:5e1631496985 484 }
root@mbed.org 0:5e1631496985 485 #endif /* LWIP_AUTOIP */
root@mbed.org 0:5e1631496985 486
root@mbed.org 0:5e1631496985 487 if (netif->flags & NETIF_FLAG_UP) {
root@mbed.org 0:5e1631496985 488 #if LWIP_ARP
root@mbed.org 0:5e1631496985 489 /* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */
root@mbed.org 0:5e1631496985 490 if (netif->flags & NETIF_FLAG_ETHARP) {
root@mbed.org 0:5e1631496985 491 etharp_gratuitous(netif);
root@mbed.org 0:5e1631496985 492 }
root@mbed.org 0:5e1631496985 493 #endif /* LWIP_ARP */
root@mbed.org 0:5e1631496985 494
root@mbed.org 0:5e1631496985 495 #if LWIP_IGMP
root@mbed.org 0:5e1631496985 496 /* resend IGMP memberships */
root@mbed.org 0:5e1631496985 497 if (netif->flags & NETIF_FLAG_IGMP) {
root@mbed.org 0:5e1631496985 498 igmp_report_groups( netif);
root@mbed.org 0:5e1631496985 499 }
root@mbed.org 0:5e1631496985 500 #endif /* LWIP_IGMP */
root@mbed.org 0:5e1631496985 501 }
root@mbed.org 0:5e1631496985 502 NETIF_LINK_CALLBACK(netif);
root@mbed.org 0:5e1631496985 503 }
root@mbed.org 0:5e1631496985 504
root@mbed.org 0:5e1631496985 505 /**
root@mbed.org 0:5e1631496985 506 * Called by a driver when its link goes down
root@mbed.org 0:5e1631496985 507 */
root@mbed.org 0:5e1631496985 508 void netif_set_link_down(struct netif *netif )
root@mbed.org 0:5e1631496985 509 {
root@mbed.org 0:5e1631496985 510 netif->flags &= ~NETIF_FLAG_LINK_UP;
root@mbed.org 0:5e1631496985 511 NETIF_LINK_CALLBACK(netif);
root@mbed.org 0:5e1631496985 512 }
root@mbed.org 0:5e1631496985 513
root@mbed.org 0:5e1631496985 514 /**
root@mbed.org 0:5e1631496985 515 * Ask if a link is up
root@mbed.org 0:5e1631496985 516 */
root@mbed.org 0:5e1631496985 517 u8_t netif_is_link_up(struct netif *netif)
root@mbed.org 0:5e1631496985 518 {
root@mbed.org 0:5e1631496985 519 return (netif->flags & NETIF_FLAG_LINK_UP) ? 1 : 0;
root@mbed.org 0:5e1631496985 520 }
root@mbed.org 0:5e1631496985 521
root@mbed.org 0:5e1631496985 522 /**
root@mbed.org 0:5e1631496985 523 * Set callback to be called when link is brought up/down
root@mbed.org 0:5e1631496985 524 */
root@mbed.org 0:5e1631496985 525 void netif_set_link_callback(struct netif *netif, void (* link_callback)(struct netif *netif ))
root@mbed.org 0:5e1631496985 526 {
root@mbed.org 0:5e1631496985 527 if (netif) {
root@mbed.org 0:5e1631496985 528 netif->link_callback = link_callback;
root@mbed.org 0:5e1631496985 529 }
root@mbed.org 0:5e1631496985 530 }
root@mbed.org 0:5e1631496985 531 #endif /* LWIP_NETIF_LINK_CALLBACK */
root@mbed.org 0:5e1631496985 532
root@mbed.org 0:5e1631496985 533 #if ENABLE_LOOPBACK
root@mbed.org 0:5e1631496985 534 /**
root@mbed.org 0:5e1631496985 535 * Send an IP packet to be received on the same netif (loopif-like).
root@mbed.org 0:5e1631496985 536 * The pbuf is simply copied and handed back to netif->input.
root@mbed.org 0:5e1631496985 537 * In multithreaded mode, this is done directly since netif->input must put
root@mbed.org 0:5e1631496985 538 * the packet on a queue.
root@mbed.org 0:5e1631496985 539 * In callback mode, the packet is put on an internal queue and is fed to
root@mbed.org 0:5e1631496985 540 * netif->input by netif_poll().
root@mbed.org 0:5e1631496985 541 *
root@mbed.org 0:5e1631496985 542 * @param netif the lwip network interface structure
root@mbed.org 0:5e1631496985 543 * @param p the (IP) packet to 'send'
root@mbed.org 0:5e1631496985 544 * @param ipaddr the ip address to send the packet to (not used)
root@mbed.org 0:5e1631496985 545 * @return ERR_OK if the packet has been sent
root@mbed.org 0:5e1631496985 546 * ERR_MEM if the pbuf used to copy the packet couldn't be allocated
root@mbed.org 0:5e1631496985 547 */
root@mbed.org 0:5e1631496985 548 err_t
root@mbed.org 0:5e1631496985 549 netif_loop_output(struct netif *netif, struct pbuf *p,
root@mbed.org 0:5e1631496985 550 struct ip_addr *ipaddr)
root@mbed.org 0:5e1631496985 551 {
root@mbed.org 0:5e1631496985 552 struct pbuf *r;
root@mbed.org 0:5e1631496985 553 err_t err;
root@mbed.org 0:5e1631496985 554 struct pbuf *last;
root@mbed.org 0:5e1631496985 555 #if LWIP_LOOPBACK_MAX_PBUFS
root@mbed.org 0:5e1631496985 556 u8_t clen = 0;
root@mbed.org 0:5e1631496985 557 #endif /* LWIP_LOOPBACK_MAX_PBUFS */
root@mbed.org 0:5e1631496985 558 SYS_ARCH_DECL_PROTECT(lev);
root@mbed.org 0:5e1631496985 559 LWIP_UNUSED_ARG(ipaddr);
root@mbed.org 0:5e1631496985 560
root@mbed.org 0:5e1631496985 561 /* Allocate a new pbuf */
root@mbed.org 0:5e1631496985 562 r = pbuf_alloc(PBUF_LINK, p->tot_len, PBUF_RAM);
root@mbed.org 0:5e1631496985 563 if (r == NULL) {
root@mbed.org 0:5e1631496985 564 return ERR_MEM;
root@mbed.org 0:5e1631496985 565 }
root@mbed.org 0:5e1631496985 566 #if LWIP_LOOPBACK_MAX_PBUFS
root@mbed.org 0:5e1631496985 567 clen = pbuf_clen(r);
root@mbed.org 0:5e1631496985 568 /* check for overflow or too many pbuf on queue */
root@mbed.org 0:5e1631496985 569 if(((netif->loop_cnt_current + clen) < netif->loop_cnt_current) ||
root@mbed.org 0:5e1631496985 570 ((netif->loop_cnt_current + clen) > LWIP_LOOPBACK_MAX_PBUFS)) {
root@mbed.org 0:5e1631496985 571 pbuf_free(r);
root@mbed.org 0:5e1631496985 572 r = NULL;
root@mbed.org 0:5e1631496985 573 return ERR_MEM;
root@mbed.org 0:5e1631496985 574 }
root@mbed.org 0:5e1631496985 575 netif->loop_cnt_current += clen;
root@mbed.org 0:5e1631496985 576 #endif /* LWIP_LOOPBACK_MAX_PBUFS */
root@mbed.org 0:5e1631496985 577
root@mbed.org 0:5e1631496985 578 /* Copy the whole pbuf queue p into the single pbuf r */
root@mbed.org 0:5e1631496985 579 if ((err = pbuf_copy(r, p)) != ERR_OK) {
root@mbed.org 0:5e1631496985 580 pbuf_free(r);
root@mbed.org 0:5e1631496985 581 r = NULL;
root@mbed.org 0:5e1631496985 582 return err;
root@mbed.org 0:5e1631496985 583 }
root@mbed.org 0:5e1631496985 584
root@mbed.org 0:5e1631496985 585 /* Put the packet on a linked list which gets emptied through calling
root@mbed.org 0:5e1631496985 586 netif_poll(). */
root@mbed.org 0:5e1631496985 587
root@mbed.org 0:5e1631496985 588 /* let last point to the last pbuf in chain r */
root@mbed.org 0:5e1631496985 589 for (last = r; last->next != NULL; last = last->next);
root@mbed.org 0:5e1631496985 590
root@mbed.org 0:5e1631496985 591 SYS_ARCH_PROTECT(lev);
root@mbed.org 0:5e1631496985 592 if(netif->loop_first != NULL) {
root@mbed.org 0:5e1631496985 593 LWIP_ASSERT("if first != NULL, last must also be != NULL", netif->loop_last != NULL);
root@mbed.org 0:5e1631496985 594 netif->loop_last->next = r;
root@mbed.org 0:5e1631496985 595 netif->loop_last = last;
root@mbed.org 0:5e1631496985 596 } else {
root@mbed.org 0:5e1631496985 597 netif->loop_first = r;
root@mbed.org 0:5e1631496985 598 netif->loop_last = last;
root@mbed.org 0:5e1631496985 599 }
root@mbed.org 0:5e1631496985 600 SYS_ARCH_UNPROTECT(lev);
root@mbed.org 0:5e1631496985 601
root@mbed.org 0:5e1631496985 602 #if LWIP_NETIF_LOOPBACK_MULTITHREADING
root@mbed.org 0:5e1631496985 603 /* For multithreading environment, schedule a call to netif_poll */
root@mbed.org 0:5e1631496985 604 tcpip_callback((void (*)(void *))(netif_poll), netif);
root@mbed.org 0:5e1631496985 605 #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */
root@mbed.org 0:5e1631496985 606
root@mbed.org 0:5e1631496985 607 return ERR_OK;
root@mbed.org 0:5e1631496985 608 }
root@mbed.org 0:5e1631496985 609
root@mbed.org 0:5e1631496985 610 /**
root@mbed.org 0:5e1631496985 611 * Call netif_poll() in the main loop of your application. This is to prevent
root@mbed.org 0:5e1631496985 612 * reentering non-reentrant functions like tcp_input(). Packets passed to
root@mbed.org 0:5e1631496985 613 * netif_loop_output() are put on a list that is passed to netif->input() by
root@mbed.org 0:5e1631496985 614 * netif_poll().
root@mbed.org 0:5e1631496985 615 */
root@mbed.org 0:5e1631496985 616 void
root@mbed.org 0:5e1631496985 617 netif_poll(struct netif *netif)
root@mbed.org 0:5e1631496985 618 {
root@mbed.org 0:5e1631496985 619 struct pbuf *in;
root@mbed.org 0:5e1631496985 620 SYS_ARCH_DECL_PROTECT(lev);
root@mbed.org 0:5e1631496985 621
root@mbed.org 0:5e1631496985 622 do {
root@mbed.org 0:5e1631496985 623 /* Get a packet from the list. With SYS_LIGHTWEIGHT_PROT=1, this is protected */
root@mbed.org 0:5e1631496985 624 SYS_ARCH_PROTECT(lev);
root@mbed.org 0:5e1631496985 625 in = netif->loop_first;
root@mbed.org 0:5e1631496985 626 if(in != NULL) {
root@mbed.org 0:5e1631496985 627 struct pbuf *in_end = in;
root@mbed.org 0:5e1631496985 628 #if LWIP_LOOPBACK_MAX_PBUFS
root@mbed.org 0:5e1631496985 629 u8_t clen = pbuf_clen(in);
root@mbed.org 0:5e1631496985 630 /* adjust the number of pbufs on queue */
root@mbed.org 0:5e1631496985 631 LWIP_ASSERT("netif->loop_cnt_current underflow",
root@mbed.org 0:5e1631496985 632 ((netif->loop_cnt_current - clen) < netif->loop_cnt_current));
root@mbed.org 0:5e1631496985 633 netif->loop_cnt_current -= clen;
root@mbed.org 0:5e1631496985 634 #endif /* LWIP_LOOPBACK_MAX_PBUFS */
root@mbed.org 0:5e1631496985 635 while(in_end->len != in_end->tot_len) {
root@mbed.org 0:5e1631496985 636 LWIP_ASSERT("bogus pbuf: len != tot_len but next == NULL!", in_end->next != NULL);
root@mbed.org 0:5e1631496985 637 in_end = in_end->next;
root@mbed.org 0:5e1631496985 638 }
root@mbed.org 0:5e1631496985 639 /* 'in_end' now points to the last pbuf from 'in' */
root@mbed.org 0:5e1631496985 640 if(in_end == netif->loop_last) {
root@mbed.org 0:5e1631496985 641 /* this was the last pbuf in the list */
root@mbed.org 0:5e1631496985 642 netif->loop_first = netif->loop_last = NULL;
root@mbed.org 0:5e1631496985 643 } else {
root@mbed.org 0:5e1631496985 644 /* pop the pbuf off the list */
root@mbed.org 0:5e1631496985 645 netif->loop_first = in_end->next;
root@mbed.org 0:5e1631496985 646 LWIP_ASSERT("should not be null since first != last!", netif->loop_first != NULL);
root@mbed.org 0:5e1631496985 647 }
root@mbed.org 0:5e1631496985 648 /* De-queue the pbuf from its successors on the 'loop_' list. */
root@mbed.org 0:5e1631496985 649 in_end->next = NULL;
root@mbed.org 0:5e1631496985 650 }
root@mbed.org 0:5e1631496985 651 SYS_ARCH_UNPROTECT(lev);
root@mbed.org 0:5e1631496985 652
root@mbed.org 0:5e1631496985 653 if(in != NULL) {
root@mbed.org 0:5e1631496985 654 /* loopback packets are always IP packets! */
root@mbed.org 0:5e1631496985 655 if(ip_input(in, netif) != ERR_OK) {
root@mbed.org 0:5e1631496985 656 pbuf_free(in);
root@mbed.org 0:5e1631496985 657 }
root@mbed.org 0:5e1631496985 658 /* Don't reference the packet any more! */
root@mbed.org 0:5e1631496985 659 in = NULL;
root@mbed.org 0:5e1631496985 660 }
root@mbed.org 0:5e1631496985 661 /* go on while there is a packet on the list */
root@mbed.org 0:5e1631496985 662 } while(netif->loop_first != NULL);
root@mbed.org 0:5e1631496985 663 }
root@mbed.org 0:5e1631496985 664
root@mbed.org 0:5e1631496985 665 #if !LWIP_NETIF_LOOPBACK_MULTITHREADING
root@mbed.org 0:5e1631496985 666 /**
root@mbed.org 0:5e1631496985 667 * Calls netif_poll() for every netif on the netif_list.
root@mbed.org 0:5e1631496985 668 */
root@mbed.org 0:5e1631496985 669 void
root@mbed.org 0:5e1631496985 670 netif_poll_all(void)
root@mbed.org 0:5e1631496985 671 {
root@mbed.org 0:5e1631496985 672 struct netif *netif = netif_list;
root@mbed.org 0:5e1631496985 673 /* loop through netifs */
root@mbed.org 0:5e1631496985 674 while (netif != NULL) {
root@mbed.org 0:5e1631496985 675 netif_poll(netif);
root@mbed.org 0:5e1631496985 676 /* proceed to next network interface */
root@mbed.org 0:5e1631496985 677 netif = netif->next;
root@mbed.org 0:5e1631496985 678 }
root@mbed.org 0:5e1631496985 679 }
root@mbed.org 0:5e1631496985 680 #endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */
root@mbed.org 0:5e1631496985 681 #endif /* ENABLE_LOOPBACK */