Rod Coleman / lwip-mbed-2010

Port of LwIP performed by Ralf in 2010. Not recommended for use with recent mbed libraries, but good demos of raw LwIP possible

Dependents:   LwIP_raw_API_serverExample tiny-dtls

Core/lwIP/core/netif.c@0:0791c1fece8e, 2012-09-18 (annotated)

Committer:
RodColeman
Date:
Tue Sep 18 14:41:24 2012 +0000
Revision:
0:0791c1fece8e
[mbed] converted /Eth_TCP_Wei_Server/lwip

Who changed what in which revision?

UserRevisionLine numberNew contents of line
RodColeman 0:0791c1fece8e 1 /**
RodColeman 0:0791c1fece8e 2 * @file
RodColeman 0:0791c1fece8e 3 * lwIP network interface abstraction
RodColeman 0:0791c1fece8e 4 *
RodColeman 0:0791c1fece8e 5 */
RodColeman 0:0791c1fece8e 6
RodColeman 0:0791c1fece8e 7 /*
RodColeman 0:0791c1fece8e 8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
RodColeman 0:0791c1fece8e 9 * All rights reserved.
RodColeman 0:0791c1fece8e 10 *
RodColeman 0:0791c1fece8e 11 * Redistribution and use in source and binary forms, with or without modification,
RodColeman 0:0791c1fece8e 12 * are permitted provided that the following conditions are met:
RodColeman 0:0791c1fece8e 13 *
RodColeman 0:0791c1fece8e 14 * 1. Redistributions of source code must retain the above copyright notice,
RodColeman 0:0791c1fece8e 15 * this list of conditions and the following disclaimer.
RodColeman 0:0791c1fece8e 16 * 2. Redistributions in binary form must reproduce the above copyright notice,
RodColeman 0:0791c1fece8e 17 * this list of conditions and the following disclaimer in the documentation
RodColeman 0:0791c1fece8e 18 * and/or other materials provided with the distribution.
RodColeman 0:0791c1fece8e 19 * 3. The name of the author may not be used to endorse or promote products
RodColeman 0:0791c1fece8e 20 * derived from this software without specific prior written permission.
RodColeman 0:0791c1fece8e 21 *
RodColeman 0:0791c1fece8e 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
RodColeman 0:0791c1fece8e 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
RodColeman 0:0791c1fece8e 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
RodColeman 0:0791c1fece8e 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
RodColeman 0:0791c1fece8e 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
RodColeman 0:0791c1fece8e 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
RodColeman 0:0791c1fece8e 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
RodColeman 0:0791c1fece8e 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
RodColeman 0:0791c1fece8e 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
RodColeman 0:0791c1fece8e 31 * OF SUCH DAMAGE.
RodColeman 0:0791c1fece8e 32 *
RodColeman 0:0791c1fece8e 33 * This file is part of the lwIP TCP/IP stack.
RodColeman 0:0791c1fece8e 34 *
RodColeman 0:0791c1fece8e 35 * Author: Adam Dunkels <adam@sics.se>
RodColeman 0:0791c1fece8e 36 *
RodColeman 0:0791c1fece8e 37 */
RodColeman 0:0791c1fece8e 38
RodColeman 0:0791c1fece8e 39 #include "lwip/opt.h"
RodColeman 0:0791c1fece8e 40
RodColeman 0:0791c1fece8e 41 #include "lwip/def.h"
RodColeman 0:0791c1fece8e 42 #include "lwip/ip_addr.h"
RodColeman 0:0791c1fece8e 43 #include "lwip/netif.h"
RodColeman 0:0791c1fece8e 44 #include "lwip/tcp.h"
RodColeman 0:0791c1fece8e 45 #include "lwip/snmp.h"
RodColeman 0:0791c1fece8e 46 #include "lwip/igmp.h"
RodColeman 0:0791c1fece8e 47 #include "netif/etharp.h"
RodColeman 0:0791c1fece8e 48 #if ENABLE_LOOPBACK
RodColeman 0:0791c1fece8e 49 #include "lwip/sys.h"
RodColeman 0:0791c1fece8e 50 #if LWIP_NETIF_LOOPBACK_MULTITHREADING
RodColeman 0:0791c1fece8e 51 #include "lwip/tcpip.h"
RodColeman 0:0791c1fece8e 52 #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */
RodColeman 0:0791c1fece8e 53 #endif /* ENABLE_LOOPBACK */
RodColeman 0:0791c1fece8e 54
RodColeman 0:0791c1fece8e 55 #if LWIP_AUTOIP
RodColeman 0:0791c1fece8e 56 #include "lwip/autoip.h"
RodColeman 0:0791c1fece8e 57 #endif /* LWIP_AUTOIP */
RodColeman 0:0791c1fece8e 58 #if LWIP_DHCP
RodColeman 0:0791c1fece8e 59 #include "lwip/dhcp.h"
RodColeman 0:0791c1fece8e 60 #endif /* LWIP_DHCP */
RodColeman 0:0791c1fece8e 61
RodColeman 0:0791c1fece8e 62 #if LWIP_NETIF_STATUS_CALLBACK
RodColeman 0:0791c1fece8e 63 #define NETIF_STATUS_CALLBACK(n) { if (n->status_callback) (n->status_callback)(n); }
RodColeman 0:0791c1fece8e 64 #else
RodColeman 0:0791c1fece8e 65 #define NETIF_STATUS_CALLBACK(n) { /* NOP */ }
RodColeman 0:0791c1fece8e 66 #endif /* LWIP_NETIF_STATUS_CALLBACK */
RodColeman 0:0791c1fece8e 67
RodColeman 0:0791c1fece8e 68 #if LWIP_NETIF_LINK_CALLBACK
RodColeman 0:0791c1fece8e 69 #define NETIF_LINK_CALLBACK(n) { if (n->link_callback) (n->link_callback)(n); }
RodColeman 0:0791c1fece8e 70 #else
RodColeman 0:0791c1fece8e 71 #define NETIF_LINK_CALLBACK(n) { /* NOP */ }
RodColeman 0:0791c1fece8e 72 #endif /* LWIP_NETIF_LINK_CALLBACK */
RodColeman 0:0791c1fece8e 73
RodColeman 0:0791c1fece8e 74 struct netif *netif_list;
RodColeman 0:0791c1fece8e 75 struct netif *netif_default;
RodColeman 0:0791c1fece8e 76
RodColeman 0:0791c1fece8e 77 /**
RodColeman 0:0791c1fece8e 78 * Add a network interface to the list of lwIP netifs.
RodColeman 0:0791c1fece8e 79 *
RodColeman 0:0791c1fece8e 80 * @param netif a pre-allocated netif structure
RodColeman 0:0791c1fece8e 81 * @param ipaddr IP address for the new netif
RodColeman 0:0791c1fece8e 82 * @param netmask network mask for the new netif
RodColeman 0:0791c1fece8e 83 * @param gw default gateway IP address for the new netif
RodColeman 0:0791c1fece8e 84 * @param state opaque data passed to the new netif
RodColeman 0:0791c1fece8e 85 * @param init callback function that initializes the interface
RodColeman 0:0791c1fece8e 86 * @param input callback function that is called to pass
RodColeman 0:0791c1fece8e 87 * ingress packets up in the protocol layer stack.
RodColeman 0:0791c1fece8e 88 *
RodColeman 0:0791c1fece8e 89 * @return netif, or NULL if failed.
RodColeman 0:0791c1fece8e 90 */
RodColeman 0:0791c1fece8e 91 struct netif *
RodColeman 0:0791c1fece8e 92 netif_add(struct netif *netif, struct ip_addr *ipaddr, struct ip_addr *netmask,
RodColeman 0:0791c1fece8e 93 struct ip_addr *gw,
RodColeman 0:0791c1fece8e 94 void *state,
RodColeman 0:0791c1fece8e 95 err_t (* init)(struct netif *netif),
RodColeman 0:0791c1fece8e 96 err_t (* input)(struct pbuf *p, struct netif *netif))
RodColeman 0:0791c1fece8e 97 {
RodColeman 0:0791c1fece8e 98 static u8_t netifnum = 0;
RodColeman 0:0791c1fece8e 99
RodColeman 0:0791c1fece8e 100 /* reset new interface configuration state */
RodColeman 0:0791c1fece8e 101 netif->ip_addr.addr = 0;
RodColeman 0:0791c1fece8e 102 netif->netmask.addr = 0;
RodColeman 0:0791c1fece8e 103 netif->gw.addr = 0;
RodColeman 0:0791c1fece8e 104 netif->flags = 0;
RodColeman 0:0791c1fece8e 105 #if LWIP_DHCP
RodColeman 0:0791c1fece8e 106 /* netif not under DHCP control by default */
RodColeman 0:0791c1fece8e 107 netif->dhcp = NULL;
RodColeman 0:0791c1fece8e 108 #endif /* LWIP_DHCP */
RodColeman 0:0791c1fece8e 109 #if LWIP_AUTOIP
RodColeman 0:0791c1fece8e 110 /* netif not under AutoIP control by default */
RodColeman 0:0791c1fece8e 111 netif->autoip = NULL;
RodColeman 0:0791c1fece8e 112 #endif /* LWIP_AUTOIP */
RodColeman 0:0791c1fece8e 113 #if LWIP_NETIF_STATUS_CALLBACK
RodColeman 0:0791c1fece8e 114 netif->status_callback = NULL;
RodColeman 0:0791c1fece8e 115 #endif /* LWIP_NETIF_STATUS_CALLBACK */
RodColeman 0:0791c1fece8e 116 #if LWIP_NETIF_LINK_CALLBACK
RodColeman 0:0791c1fece8e 117 netif->link_callback = NULL;
RodColeman 0:0791c1fece8e 118 #endif /* LWIP_NETIF_LINK_CALLBACK */
RodColeman 0:0791c1fece8e 119 #if LWIP_IGMP
RodColeman 0:0791c1fece8e 120 netif->igmp_mac_filter = NULL;
RodColeman 0:0791c1fece8e 121 #endif /* LWIP_IGMP */
RodColeman 0:0791c1fece8e 122 #if ENABLE_LOOPBACK
RodColeman 0:0791c1fece8e 123 netif->loop_first = NULL;
RodColeman 0:0791c1fece8e 124 netif->loop_last = NULL;
RodColeman 0:0791c1fece8e 125 #endif /* ENABLE_LOOPBACK */
RodColeman 0:0791c1fece8e 126
RodColeman 0:0791c1fece8e 127 /* remember netif specific state information data */
RodColeman 0:0791c1fece8e 128 netif->state = state;
RodColeman 0:0791c1fece8e 129 netif->num = netifnum++;
RodColeman 0:0791c1fece8e 130 netif->input = input;
RodColeman 0:0791c1fece8e 131 #if LWIP_NETIF_HWADDRHINT
RodColeman 0:0791c1fece8e 132 netif->addr_hint = NULL;
RodColeman 0:0791c1fece8e 133 #endif /* LWIP_NETIF_HWADDRHINT*/
RodColeman 0:0791c1fece8e 134 #if ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS
RodColeman 0:0791c1fece8e 135 netif->loop_cnt_current = 0;
RodColeman 0:0791c1fece8e 136 #endif /* ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS */
RodColeman 0:0791c1fece8e 137
RodColeman 0:0791c1fece8e 138 netif_set_addr(netif, ipaddr, netmask, gw);
RodColeman 0:0791c1fece8e 139
RodColeman 0:0791c1fece8e 140 /* call user specified initialization function for netif */
RodColeman 0:0791c1fece8e 141 if (init(netif) != ERR_OK) {
RodColeman 0:0791c1fece8e 142 return NULL;
RodColeman 0:0791c1fece8e 143 }
RodColeman 0:0791c1fece8e 144
RodColeman 0:0791c1fece8e 145 /* add this netif to the list */
RodColeman 0:0791c1fece8e 146 netif->next = netif_list;
RodColeman 0:0791c1fece8e 147 netif_list = netif;
RodColeman 0:0791c1fece8e 148 snmp_inc_iflist();
RodColeman 0:0791c1fece8e 149
RodColeman 0:0791c1fece8e 150 #if LWIP_IGMP
RodColeman 0:0791c1fece8e 151 /* start IGMP processing */
RodColeman 0:0791c1fece8e 152 if (netif->flags & NETIF_FLAG_IGMP) {
RodColeman 0:0791c1fece8e 153 igmp_start( netif);
RodColeman 0:0791c1fece8e 154 }
RodColeman 0:0791c1fece8e 155 #endif /* LWIP_IGMP */
RodColeman 0:0791c1fece8e 156
RodColeman 0:0791c1fece8e 157 LWIP_DEBUGF(NETIF_DEBUG, ("netif: added interface %c%c IP addr ",
RodColeman 0:0791c1fece8e 158 netif->name[0], netif->name[1]));
RodColeman 0:0791c1fece8e 159 ip_addr_debug_print(NETIF_DEBUG, ipaddr);
RodColeman 0:0791c1fece8e 160 LWIP_DEBUGF(NETIF_DEBUG, (" netmask "));
RodColeman 0:0791c1fece8e 161 ip_addr_debug_print(NETIF_DEBUG, netmask);
RodColeman 0:0791c1fece8e 162 LWIP_DEBUGF(NETIF_DEBUG, (" gw "));
RodColeman 0:0791c1fece8e 163 ip_addr_debug_print(NETIF_DEBUG, gw);
RodColeman 0:0791c1fece8e 164 LWIP_DEBUGF(NETIF_DEBUG, ("\n"));
RodColeman 0:0791c1fece8e 165 return netif;
RodColeman 0:0791c1fece8e 166 }
RodColeman 0:0791c1fece8e 167
RodColeman 0:0791c1fece8e 168 /**
RodColeman 0:0791c1fece8e 169 * Change IP address configuration for a network interface (including netmask
RodColeman 0:0791c1fece8e 170 * and default gateway).
RodColeman 0:0791c1fece8e 171 *
RodColeman 0:0791c1fece8e 172 * @param netif the network interface to change
RodColeman 0:0791c1fece8e 173 * @param ipaddr the new IP address
RodColeman 0:0791c1fece8e 174 * @param netmask the new netmask
RodColeman 0:0791c1fece8e 175 * @param gw the new default gateway
RodColeman 0:0791c1fece8e 176 */
RodColeman 0:0791c1fece8e 177 void
RodColeman 0:0791c1fece8e 178 netif_set_addr(struct netif *netif, struct ip_addr *ipaddr, struct ip_addr *netmask,
RodColeman 0:0791c1fece8e 179 struct ip_addr *gw)
RodColeman 0:0791c1fece8e 180 {
RodColeman 0:0791c1fece8e 181 netif_set_ipaddr(netif, ipaddr);
RodColeman 0:0791c1fece8e 182 netif_set_netmask(netif, netmask);
RodColeman 0:0791c1fece8e 183 netif_set_gw(netif, gw);
RodColeman 0:0791c1fece8e 184 }
RodColeman 0:0791c1fece8e 185
RodColeman 0:0791c1fece8e 186 /**
RodColeman 0:0791c1fece8e 187 * Remove a network interface from the list of lwIP netifs.
RodColeman 0:0791c1fece8e 188 *
RodColeman 0:0791c1fece8e 189 * @param netif the network interface to remove
RodColeman 0:0791c1fece8e 190 */
RodColeman 0:0791c1fece8e 191 void netif_remove(struct netif * netif)
RodColeman 0:0791c1fece8e 192 {
RodColeman 0:0791c1fece8e 193 if ( netif == NULL ) return;
RodColeman 0:0791c1fece8e 194
RodColeman 0:0791c1fece8e 195 #if LWIP_IGMP
RodColeman 0:0791c1fece8e 196 /* stop IGMP processing */
RodColeman 0:0791c1fece8e 197 if (netif->flags & NETIF_FLAG_IGMP) {
RodColeman 0:0791c1fece8e 198 igmp_stop( netif);
RodColeman 0:0791c1fece8e 199 }
RodColeman 0:0791c1fece8e 200 #endif /* LWIP_IGMP */
RodColeman 0:0791c1fece8e 201
RodColeman 0:0791c1fece8e 202 snmp_delete_ipaddridx_tree(netif);
RodColeman 0:0791c1fece8e 203
RodColeman 0:0791c1fece8e 204 /* is it the first netif? */
RodColeman 0:0791c1fece8e 205 if (netif_list == netif) {
RodColeman 0:0791c1fece8e 206 netif_list = netif->next;
RodColeman 0:0791c1fece8e 207 snmp_dec_iflist();
RodColeman 0:0791c1fece8e 208 }
RodColeman 0:0791c1fece8e 209 else {
RodColeman 0:0791c1fece8e 210 /* look for netif further down the list */
RodColeman 0:0791c1fece8e 211 struct netif * tmpNetif;
RodColeman 0:0791c1fece8e 212 for (tmpNetif = netif_list; tmpNetif != NULL; tmpNetif = tmpNetif->next) {
RodColeman 0:0791c1fece8e 213 if (tmpNetif->next == netif) {
RodColeman 0:0791c1fece8e 214 tmpNetif->next = netif->next;
RodColeman 0:0791c1fece8e 215 snmp_dec_iflist();
RodColeman 0:0791c1fece8e 216 break;
RodColeman 0:0791c1fece8e 217 }
RodColeman 0:0791c1fece8e 218 }
RodColeman 0:0791c1fece8e 219 if (tmpNetif == NULL)
RodColeman 0:0791c1fece8e 220 return; /* we didn't find any netif today */
RodColeman 0:0791c1fece8e 221 }
RodColeman 0:0791c1fece8e 222 /* this netif is default? */
RodColeman 0:0791c1fece8e 223 if (netif_default == netif)
RodColeman 0:0791c1fece8e 224 /* reset default netif */
RodColeman 0:0791c1fece8e 225 netif_set_default(NULL);
RodColeman 0:0791c1fece8e 226 LWIP_DEBUGF( NETIF_DEBUG, ("netif_remove: removed netif\n") );
RodColeman 0:0791c1fece8e 227 }
RodColeman 0:0791c1fece8e 228
RodColeman 0:0791c1fece8e 229 /**
RodColeman 0:0791c1fece8e 230 * Find a network interface by searching for its name
RodColeman 0:0791c1fece8e 231 *
RodColeman 0:0791c1fece8e 232 * @param name the name of the netif (like netif->name) plus concatenated number
RodColeman 0:0791c1fece8e 233 * in ascii representation (e.g. 'en0')
RodColeman 0:0791c1fece8e 234 */
RodColeman 0:0791c1fece8e 235 struct netif *
RodColeman 0:0791c1fece8e 236 netif_find(char *name)
RodColeman 0:0791c1fece8e 237 {
RodColeman 0:0791c1fece8e 238 struct netif *netif;
RodColeman 0:0791c1fece8e 239 u8_t num;
RodColeman 0:0791c1fece8e 240
RodColeman 0:0791c1fece8e 241 if (name == NULL) {
RodColeman 0:0791c1fece8e 242 return NULL;
RodColeman 0:0791c1fece8e 243 }
RodColeman 0:0791c1fece8e 244
RodColeman 0:0791c1fece8e 245 num = name[2] - '0';
RodColeman 0:0791c1fece8e 246
RodColeman 0:0791c1fece8e 247 for(netif = netif_list; netif != NULL; netif = netif->next) {
RodColeman 0:0791c1fece8e 248 if (num == netif->num &&
RodColeman 0:0791c1fece8e 249 name[0] == netif->name[0] &&
RodColeman 0:0791c1fece8e 250 name[1] == netif->name[1]) {
RodColeman 0:0791c1fece8e 251 LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: found %c%c\n", name[0], name[1]));
RodColeman 0:0791c1fece8e 252 return netif;
RodColeman 0:0791c1fece8e 253 }
RodColeman 0:0791c1fece8e 254 }
RodColeman 0:0791c1fece8e 255 LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: didn't find %c%c\n", name[0], name[1]));
RodColeman 0:0791c1fece8e 256 return NULL;
RodColeman 0:0791c1fece8e 257 }
RodColeman 0:0791c1fece8e 258
RodColeman 0:0791c1fece8e 259 /**
RodColeman 0:0791c1fece8e 260 * Change the IP address of a network interface
RodColeman 0:0791c1fece8e 261 *
RodColeman 0:0791c1fece8e 262 * @param netif the network interface to change
RodColeman 0:0791c1fece8e 263 * @param ipaddr the new IP address
RodColeman 0:0791c1fece8e 264 *
RodColeman 0:0791c1fece8e 265 * @note call netif_set_addr() if you also want to change netmask and
RodColeman 0:0791c1fece8e 266 * default gateway
RodColeman 0:0791c1fece8e 267 */
RodColeman 0:0791c1fece8e 268 void
RodColeman 0:0791c1fece8e 269 netif_set_ipaddr(struct netif *netif, struct ip_addr *ipaddr)
RodColeman 0:0791c1fece8e 270 {
RodColeman 0:0791c1fece8e 271 /* TODO: Handling of obsolete pcbs */
RodColeman 0:0791c1fece8e 272 /* See: http://mail.gnu.org/archive/html/lwip-users/2003-03/msg00118.html */
RodColeman 0:0791c1fece8e 273 #if LWIP_TCP
RodColeman 0:0791c1fece8e 274 struct tcp_pcb *pcb;
RodColeman 0:0791c1fece8e 275 struct tcp_pcb_listen *lpcb;
RodColeman 0:0791c1fece8e 276
RodColeman 0:0791c1fece8e 277 /* address is actually being changed? */
RodColeman 0:0791c1fece8e 278 if ((ip_addr_cmp(ipaddr, &(netif->ip_addr))) == 0)
RodColeman 0:0791c1fece8e 279 {
RodColeman 0:0791c1fece8e 280 /* extern struct tcp_pcb *tcp_active_pcbs; defined by tcp.h */
RodColeman 0:0791c1fece8e 281 LWIP_DEBUGF(NETIF_DEBUG | 1, ("netif_set_ipaddr: netif address being changed\n"));
RodColeman 0:0791c1fece8e 282 pcb = tcp_active_pcbs;
RodColeman 0:0791c1fece8e 283 while (pcb != NULL) {
RodColeman 0:0791c1fece8e 284 /* PCB bound to current local interface address? */
RodColeman 0:0791c1fece8e 285 if (ip_addr_cmp(&(pcb->local_ip), &(netif->ip_addr))) {
RodColeman 0:0791c1fece8e 286 /* this connection must be aborted */
RodColeman 0:0791c1fece8e 287 struct tcp_pcb *next = pcb->next;
RodColeman 0:0791c1fece8e 288 LWIP_DEBUGF(NETIF_DEBUG | 1, ("netif_set_ipaddr: aborting TCP pcb %p\n", (void *)pcb));
RodColeman 0:0791c1fece8e 289 tcp_abort(pcb);
RodColeman 0:0791c1fece8e 290 pcb = next;
RodColeman 0:0791c1fece8e 291 } else {
RodColeman 0:0791c1fece8e 292 pcb = pcb->next;
RodColeman 0:0791c1fece8e 293 }
RodColeman 0:0791c1fece8e 294 }
RodColeman 0:0791c1fece8e 295 for (lpcb = tcp_listen_pcbs.listen_pcbs; lpcb != NULL; lpcb = lpcb->next) {
RodColeman 0:0791c1fece8e 296 /* PCB bound to current local interface address? */
RodColeman 0:0791c1fece8e 297 if ((!(ip_addr_isany(&(lpcb->local_ip)))) &&
RodColeman 0:0791c1fece8e 298 (ip_addr_cmp(&(lpcb->local_ip), &(netif->ip_addr)))) {
RodColeman 0:0791c1fece8e 299 /* The PCB is listening to the old ipaddr and
RodColeman 0:0791c1fece8e 300 * is set to listen to the new one instead */
RodColeman 0:0791c1fece8e 301 ip_addr_set(&(lpcb->local_ip), ipaddr);
RodColeman 0:0791c1fece8e 302 }
RodColeman 0:0791c1fece8e 303 }
RodColeman 0:0791c1fece8e 304 }
RodColeman 0:0791c1fece8e 305 #endif
RodColeman 0:0791c1fece8e 306 snmp_delete_ipaddridx_tree(netif);
RodColeman 0:0791c1fece8e 307 snmp_delete_iprteidx_tree(0,netif);
RodColeman 0:0791c1fece8e 308 /* set new IP address to netif */
RodColeman 0:0791c1fece8e 309 ip_addr_set(&(netif->ip_addr), ipaddr);
RodColeman 0:0791c1fece8e 310 snmp_insert_ipaddridx_tree(netif);
RodColeman 0:0791c1fece8e 311 snmp_insert_iprteidx_tree(0,netif);
RodColeman 0:0791c1fece8e 312
RodColeman 0:0791c1fece8e 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",
RodColeman 0:0791c1fece8e 314 netif->name[0], netif->name[1],
RodColeman 0:0791c1fece8e 315 ip4_addr1(&netif->ip_addr),
RodColeman 0:0791c1fece8e 316 ip4_addr2(&netif->ip_addr),
RodColeman 0:0791c1fece8e 317 ip4_addr3(&netif->ip_addr),
RodColeman 0:0791c1fece8e 318 ip4_addr4(&netif->ip_addr)));
RodColeman 0:0791c1fece8e 319 }
RodColeman 0:0791c1fece8e 320
RodColeman 0:0791c1fece8e 321 /**
RodColeman 0:0791c1fece8e 322 * Change the default gateway for a network interface
RodColeman 0:0791c1fece8e 323 *
RodColeman 0:0791c1fece8e 324 * @param netif the network interface to change
RodColeman 0:0791c1fece8e 325 * @param gw the new default gateway
RodColeman 0:0791c1fece8e 326 *
RodColeman 0:0791c1fece8e 327 * @note call netif_set_addr() if you also want to change ip address and netmask
RodColeman 0:0791c1fece8e 328 */
RodColeman 0:0791c1fece8e 329 void
RodColeman 0:0791c1fece8e 330 netif_set_gw(struct netif *netif, struct ip_addr *gw)
RodColeman 0:0791c1fece8e 331 {
RodColeman 0:0791c1fece8e 332 ip_addr_set(&(netif->gw), gw);
RodColeman 0:0791c1fece8e 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",
RodColeman 0:0791c1fece8e 334 netif->name[0], netif->name[1],
RodColeman 0:0791c1fece8e 335 ip4_addr1(&netif->gw),
RodColeman 0:0791c1fece8e 336 ip4_addr2(&netif->gw),
RodColeman 0:0791c1fece8e 337 ip4_addr3(&netif->gw),
RodColeman 0:0791c1fece8e 338 ip4_addr4(&netif->gw)));
RodColeman 0:0791c1fece8e 339 }
RodColeman 0:0791c1fece8e 340
RodColeman 0:0791c1fece8e 341 /**
RodColeman 0:0791c1fece8e 342 * Change the netmask of a network interface
RodColeman 0:0791c1fece8e 343 *
RodColeman 0:0791c1fece8e 344 * @param netif the network interface to change
RodColeman 0:0791c1fece8e 345 * @param netmask the new netmask
RodColeman 0:0791c1fece8e 346 *
RodColeman 0:0791c1fece8e 347 * @note call netif_set_addr() if you also want to change ip address and
RodColeman 0:0791c1fece8e 348 * default gateway
RodColeman 0:0791c1fece8e 349 */
RodColeman 0:0791c1fece8e 350 void
RodColeman 0:0791c1fece8e 351 netif_set_netmask(struct netif *netif, struct ip_addr *netmask)
RodColeman 0:0791c1fece8e 352 {
RodColeman 0:0791c1fece8e 353 snmp_delete_iprteidx_tree(0, netif);
RodColeman 0:0791c1fece8e 354 /* set new netmask to netif */
RodColeman 0:0791c1fece8e 355 ip_addr_set(&(netif->netmask), netmask);
RodColeman 0:0791c1fece8e 356 snmp_insert_iprteidx_tree(0, netif);
RodColeman 0:0791c1fece8e 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",
RodColeman 0:0791c1fece8e 358 netif->name[0], netif->name[1],
RodColeman 0:0791c1fece8e 359 ip4_addr1(&netif->netmask),
RodColeman 0:0791c1fece8e 360 ip4_addr2(&netif->netmask),
RodColeman 0:0791c1fece8e 361 ip4_addr3(&netif->netmask),
RodColeman 0:0791c1fece8e 362 ip4_addr4(&netif->netmask)));
RodColeman 0:0791c1fece8e 363 }
RodColeman 0:0791c1fece8e 364
RodColeman 0:0791c1fece8e 365 /**
RodColeman 0:0791c1fece8e 366 * Set a network interface as the default network interface
RodColeman 0:0791c1fece8e 367 * (used to output all packets for which no specific route is found)
RodColeman 0:0791c1fece8e 368 *
RodColeman 0:0791c1fece8e 369 * @param netif the default network interface
RodColeman 0:0791c1fece8e 370 */
RodColeman 0:0791c1fece8e 371 void
RodColeman 0:0791c1fece8e 372 netif_set_default(struct netif *netif)
RodColeman 0:0791c1fece8e 373 {
RodColeman 0:0791c1fece8e 374 if (netif == NULL)
RodColeman 0:0791c1fece8e 375 {
RodColeman 0:0791c1fece8e 376 /* remove default route */
RodColeman 0:0791c1fece8e 377 snmp_delete_iprteidx_tree(1, netif);
RodColeman 0:0791c1fece8e 378 }
RodColeman 0:0791c1fece8e 379 else
RodColeman 0:0791c1fece8e 380 {
RodColeman 0:0791c1fece8e 381 /* install default route */
RodColeman 0:0791c1fece8e 382 snmp_insert_iprteidx_tree(1, netif);
RodColeman 0:0791c1fece8e 383 }
RodColeman 0:0791c1fece8e 384 netif_default = netif;
RodColeman 0:0791c1fece8e 385 LWIP_DEBUGF(NETIF_DEBUG, ("netif: setting default interface %c%c\n",
RodColeman 0:0791c1fece8e 386 netif ? netif->name[0] : '\'', netif ? netif->name[1] : '\''));
RodColeman 0:0791c1fece8e 387 }
RodColeman 0:0791c1fece8e 388
RodColeman 0:0791c1fece8e 389 /**
RodColeman 0:0791c1fece8e 390 * Bring an interface up, available for processing
RodColeman 0:0791c1fece8e 391 * traffic.
RodColeman 0:0791c1fece8e 392 *
RodColeman 0:0791c1fece8e 393 * @note: Enabling DHCP on a down interface will make it come
RodColeman 0:0791c1fece8e 394 * up once configured.
RodColeman 0:0791c1fece8e 395 *
RodColeman 0:0791c1fece8e 396 * @see dhcp_start()
RodColeman 0:0791c1fece8e 397 */
RodColeman 0:0791c1fece8e 398 void netif_set_up(struct netif *netif)
RodColeman 0:0791c1fece8e 399 {
RodColeman 0:0791c1fece8e 400 if ( !(netif->flags & NETIF_FLAG_UP )) {
RodColeman 0:0791c1fece8e 401 netif->flags |= NETIF_FLAG_UP;
RodColeman 0:0791c1fece8e 402
RodColeman 0:0791c1fece8e 403 #if LWIP_SNMP
RodColeman 0:0791c1fece8e 404 snmp_get_sysuptime(&netif->ts);
RodColeman 0:0791c1fece8e 405 #endif /* LWIP_SNMP */
RodColeman 0:0791c1fece8e 406
RodColeman 0:0791c1fece8e 407 NETIF_LINK_CALLBACK(netif);
RodColeman 0:0791c1fece8e 408 NETIF_STATUS_CALLBACK(netif);
RodColeman 0:0791c1fece8e 409
RodColeman 0:0791c1fece8e 410 #if LWIP_ARP
RodColeman 0:0791c1fece8e 411 /* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */
RodColeman 0:0791c1fece8e 412 if (netif->flags & NETIF_FLAG_ETHARP) {
RodColeman 0:0791c1fece8e 413 etharp_gratuitous(netif);
RodColeman 0:0791c1fece8e 414 }
RodColeman 0:0791c1fece8e 415 #endif /* LWIP_ARP */
RodColeman 0:0791c1fece8e 416
RodColeman 0:0791c1fece8e 417 #if LWIP_IGMP
RodColeman 0:0791c1fece8e 418 /* resend IGMP memberships */
RodColeman 0:0791c1fece8e 419 if (netif->flags & NETIF_FLAG_IGMP) {
RodColeman 0:0791c1fece8e 420 igmp_report_groups( netif);
RodColeman 0:0791c1fece8e 421 }
RodColeman 0:0791c1fece8e 422 #endif /* LWIP_IGMP */
RodColeman 0:0791c1fece8e 423 }
RodColeman 0:0791c1fece8e 424 }
RodColeman 0:0791c1fece8e 425
RodColeman 0:0791c1fece8e 426 /**
RodColeman 0:0791c1fece8e 427 * Bring an interface down, disabling any traffic processing.
RodColeman 0:0791c1fece8e 428 *
RodColeman 0:0791c1fece8e 429 * @note: Enabling DHCP on a down interface will make it come
RodColeman 0:0791c1fece8e 430 * up once configured.
RodColeman 0:0791c1fece8e 431 *
RodColeman 0:0791c1fece8e 432 * @see dhcp_start()
RodColeman 0:0791c1fece8e 433 */
RodColeman 0:0791c1fece8e 434 void netif_set_down(struct netif *netif)
RodColeman 0:0791c1fece8e 435 {
RodColeman 0:0791c1fece8e 436 if ( netif->flags & NETIF_FLAG_UP )
RodColeman 0:0791c1fece8e 437 {
RodColeman 0:0791c1fece8e 438 netif->flags &= ~NETIF_FLAG_UP;
RodColeman 0:0791c1fece8e 439 #if LWIP_SNMP
RodColeman 0:0791c1fece8e 440 snmp_get_sysuptime(&netif->ts);
RodColeman 0:0791c1fece8e 441 #endif
RodColeman 0:0791c1fece8e 442
RodColeman 0:0791c1fece8e 443 NETIF_LINK_CALLBACK(netif);
RodColeman 0:0791c1fece8e 444 NETIF_STATUS_CALLBACK(netif);
RodColeman 0:0791c1fece8e 445 }
RodColeman 0:0791c1fece8e 446 }
RodColeman 0:0791c1fece8e 447
RodColeman 0:0791c1fece8e 448 /**
RodColeman 0:0791c1fece8e 449 * Ask if an interface is up
RodColeman 0:0791c1fece8e 450 */
RodColeman 0:0791c1fece8e 451 u8_t netif_is_up(struct netif *netif)
RodColeman 0:0791c1fece8e 452 {
RodColeman 0:0791c1fece8e 453 return (netif->flags & NETIF_FLAG_UP)?1:0;
RodColeman 0:0791c1fece8e 454 }
RodColeman 0:0791c1fece8e 455
RodColeman 0:0791c1fece8e 456 #if LWIP_NETIF_STATUS_CALLBACK
RodColeman 0:0791c1fece8e 457 /**
RodColeman 0:0791c1fece8e 458 * Set callback to be called when interface is brought up/down
RodColeman 0:0791c1fece8e 459 */
RodColeman 0:0791c1fece8e 460 void netif_set_status_callback(struct netif *netif, void (* status_callback)(struct netif *netif ))
RodColeman 0:0791c1fece8e 461 {
RodColeman 0:0791c1fece8e 462 if ( netif )
RodColeman 0:0791c1fece8e 463 netif->status_callback = status_callback;
RodColeman 0:0791c1fece8e 464 }
RodColeman 0:0791c1fece8e 465 #endif /* LWIP_NETIF_STATUS_CALLBACK */
RodColeman 0:0791c1fece8e 466
RodColeman 0:0791c1fece8e 467 #if LWIP_NETIF_LINK_CALLBACK
RodColeman 0:0791c1fece8e 468 /**
RodColeman 0:0791c1fece8e 469 * Called by a driver when its link goes up
RodColeman 0:0791c1fece8e 470 */
RodColeman 0:0791c1fece8e 471 void netif_set_link_up(struct netif *netif )
RodColeman 0:0791c1fece8e 472 {
RodColeman 0:0791c1fece8e 473 netif->flags |= NETIF_FLAG_LINK_UP;
RodColeman 0:0791c1fece8e 474
RodColeman 0:0791c1fece8e 475 #if LWIP_DHCP
RodColeman 0:0791c1fece8e 476 if (netif->dhcp) {
RodColeman 0:0791c1fece8e 477 dhcp_network_changed(netif);
RodColeman 0:0791c1fece8e 478 }
RodColeman 0:0791c1fece8e 479 #endif /* LWIP_DHCP */
RodColeman 0:0791c1fece8e 480
RodColeman 0:0791c1fece8e 481 #if LWIP_AUTOIP
RodColeman 0:0791c1fece8e 482 if (netif->autoip) {
RodColeman 0:0791c1fece8e 483 autoip_network_changed(netif);
RodColeman 0:0791c1fece8e 484 }
RodColeman 0:0791c1fece8e 485 #endif /* LWIP_AUTOIP */
RodColeman 0:0791c1fece8e 486
RodColeman 0:0791c1fece8e 487 if (netif->flags & NETIF_FLAG_UP) {
RodColeman 0:0791c1fece8e 488 #if LWIP_ARP
RodColeman 0:0791c1fece8e 489 /* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */
RodColeman 0:0791c1fece8e 490 if (netif->flags & NETIF_FLAG_ETHARP) {
RodColeman 0:0791c1fece8e 491 etharp_gratuitous(netif);
RodColeman 0:0791c1fece8e 492 }
RodColeman 0:0791c1fece8e 493 #endif /* LWIP_ARP */
RodColeman 0:0791c1fece8e 494
RodColeman 0:0791c1fece8e 495 #if LWIP_IGMP
RodColeman 0:0791c1fece8e 496 /* resend IGMP memberships */
RodColeman 0:0791c1fece8e 497 if (netif->flags & NETIF_FLAG_IGMP) {
RodColeman 0:0791c1fece8e 498 igmp_report_groups( netif);
RodColeman 0:0791c1fece8e 499 }
RodColeman 0:0791c1fece8e 500 #endif /* LWIP_IGMP */
RodColeman 0:0791c1fece8e 501 }
RodColeman 0:0791c1fece8e 502 NETIF_LINK_CALLBACK(netif);
RodColeman 0:0791c1fece8e 503 }
RodColeman 0:0791c1fece8e 504
RodColeman 0:0791c1fece8e 505 /**
RodColeman 0:0791c1fece8e 506 * Called by a driver when its link goes down
RodColeman 0:0791c1fece8e 507 */
RodColeman 0:0791c1fece8e 508 void netif_set_link_down(struct netif *netif )
RodColeman 0:0791c1fece8e 509 {
RodColeman 0:0791c1fece8e 510 netif->flags &= ~NETIF_FLAG_LINK_UP;
RodColeman 0:0791c1fece8e 511 NETIF_LINK_CALLBACK(netif);
RodColeman 0:0791c1fece8e 512 }
RodColeman 0:0791c1fece8e 513
RodColeman 0:0791c1fece8e 514 /**
RodColeman 0:0791c1fece8e 515 * Ask if a link is up
RodColeman 0:0791c1fece8e 516 */
RodColeman 0:0791c1fece8e 517 u8_t netif_is_link_up(struct netif *netif)
RodColeman 0:0791c1fece8e 518 {
RodColeman 0:0791c1fece8e 519 return (netif->flags & NETIF_FLAG_LINK_UP) ? 1 : 0;
RodColeman 0:0791c1fece8e 520 }
RodColeman 0:0791c1fece8e 521
RodColeman 0:0791c1fece8e 522 /**
RodColeman 0:0791c1fece8e 523 * Set callback to be called when link is brought up/down
RodColeman 0:0791c1fece8e 524 */
RodColeman 0:0791c1fece8e 525 void netif_set_link_callback(struct netif *netif, void (* link_callback)(struct netif *netif ))
RodColeman 0:0791c1fece8e 526 {
RodColeman 0:0791c1fece8e 527 if (netif) {
RodColeman 0:0791c1fece8e 528 netif->link_callback = link_callback;
RodColeman 0:0791c1fece8e 529 }
RodColeman 0:0791c1fece8e 530 }
RodColeman 0:0791c1fece8e 531 #endif /* LWIP_NETIF_LINK_CALLBACK */
RodColeman 0:0791c1fece8e 532
RodColeman 0:0791c1fece8e 533 #if ENABLE_LOOPBACK
RodColeman 0:0791c1fece8e 534 /**
RodColeman 0:0791c1fece8e 535 * Send an IP packet to be received on the same netif (loopif-like).
RodColeman 0:0791c1fece8e 536 * The pbuf is simply copied and handed back to netif->input.
RodColeman 0:0791c1fece8e 537 * In multithreaded mode, this is done directly since netif->input must put
RodColeman 0:0791c1fece8e 538 * the packet on a queue.
RodColeman 0:0791c1fece8e 539 * In callback mode, the packet is put on an internal queue and is fed to
RodColeman 0:0791c1fece8e 540 * netif->input by netif_poll().
RodColeman 0:0791c1fece8e 541 *
RodColeman 0:0791c1fece8e 542 * @param netif the lwip network interface structure
RodColeman 0:0791c1fece8e 543 * @param p the (IP) packet to 'send'
RodColeman 0:0791c1fece8e 544 * @param ipaddr the ip address to send the packet to (not used)
RodColeman 0:0791c1fece8e 545 * @return ERR_OK if the packet has been sent
RodColeman 0:0791c1fece8e 546 * ERR_MEM if the pbuf used to copy the packet couldn't be allocated
RodColeman 0:0791c1fece8e 547 */
RodColeman 0:0791c1fece8e 548 err_t
RodColeman 0:0791c1fece8e 549 netif_loop_output(struct netif *netif, struct pbuf *p,
RodColeman 0:0791c1fece8e 550 struct ip_addr *ipaddr)
RodColeman 0:0791c1fece8e 551 {
RodColeman 0:0791c1fece8e 552 struct pbuf *r;
RodColeman 0:0791c1fece8e 553 err_t err;
RodColeman 0:0791c1fece8e 554 struct pbuf *last;
RodColeman 0:0791c1fece8e 555 #if LWIP_LOOPBACK_MAX_PBUFS
RodColeman 0:0791c1fece8e 556 u8_t clen = 0;
RodColeman 0:0791c1fece8e 557 #endif /* LWIP_LOOPBACK_MAX_PBUFS */
RodColeman 0:0791c1fece8e 558 SYS_ARCH_DECL_PROTECT(lev);
RodColeman 0:0791c1fece8e 559 LWIP_UNUSED_ARG(ipaddr);
RodColeman 0:0791c1fece8e 560
RodColeman 0:0791c1fece8e 561 /* Allocate a new pbuf */
RodColeman 0:0791c1fece8e 562 r = pbuf_alloc(PBUF_LINK, p->tot_len, PBUF_RAM);
RodColeman 0:0791c1fece8e 563 if (r == NULL) {
RodColeman 0:0791c1fece8e 564 return ERR_MEM;
RodColeman 0:0791c1fece8e 565 }
RodColeman 0:0791c1fece8e 566 #if LWIP_LOOPBACK_MAX_PBUFS
RodColeman 0:0791c1fece8e 567 clen = pbuf_clen(r);
RodColeman 0:0791c1fece8e 568 /* check for overflow or too many pbuf on queue */
RodColeman 0:0791c1fece8e 569 if(((netif->loop_cnt_current + clen) < netif->loop_cnt_current) ||
RodColeman 0:0791c1fece8e 570 ((netif->loop_cnt_current + clen) > LWIP_LOOPBACK_MAX_PBUFS)) {
RodColeman 0:0791c1fece8e 571 pbuf_free(r);
RodColeman 0:0791c1fece8e 572 r = NULL;
RodColeman 0:0791c1fece8e 573 return ERR_MEM;
RodColeman 0:0791c1fece8e 574 }
RodColeman 0:0791c1fece8e 575 netif->loop_cnt_current += clen;
RodColeman 0:0791c1fece8e 576 #endif /* LWIP_LOOPBACK_MAX_PBUFS */
RodColeman 0:0791c1fece8e 577
RodColeman 0:0791c1fece8e 578 /* Copy the whole pbuf queue p into the single pbuf r */
RodColeman 0:0791c1fece8e 579 if ((err = pbuf_copy(r, p)) != ERR_OK) {
RodColeman 0:0791c1fece8e 580 pbuf_free(r);
RodColeman 0:0791c1fece8e 581 r = NULL;
RodColeman 0:0791c1fece8e 582 return err;
RodColeman 0:0791c1fece8e 583 }
RodColeman 0:0791c1fece8e 584
RodColeman 0:0791c1fece8e 585 /* Put the packet on a linked list which gets emptied through calling
RodColeman 0:0791c1fece8e 586 netif_poll(). */
RodColeman 0:0791c1fece8e 587
RodColeman 0:0791c1fece8e 588 /* let last point to the last pbuf in chain r */
RodColeman 0:0791c1fece8e 589 for (last = r; last->next != NULL; last = last->next);
RodColeman 0:0791c1fece8e 590
RodColeman 0:0791c1fece8e 591 SYS_ARCH_PROTECT(lev);
RodColeman 0:0791c1fece8e 592 if(netif->loop_first != NULL) {
RodColeman 0:0791c1fece8e 593 LWIP_ASSERT("if first != NULL, last must also be != NULL", netif->loop_last != NULL);
RodColeman 0:0791c1fece8e 594 netif->loop_last->next = r;
RodColeman 0:0791c1fece8e 595 netif->loop_last = last;
RodColeman 0:0791c1fece8e 596 } else {
RodColeman 0:0791c1fece8e 597 netif->loop_first = r;
RodColeman 0:0791c1fece8e 598 netif->loop_last = last;
RodColeman 0:0791c1fece8e 599 }
RodColeman 0:0791c1fece8e 600 SYS_ARCH_UNPROTECT(lev);
RodColeman 0:0791c1fece8e 601
RodColeman 0:0791c1fece8e 602 #if LWIP_NETIF_LOOPBACK_MULTITHREADING
RodColeman 0:0791c1fece8e 603 /* For multithreading environment, schedule a call to netif_poll */
RodColeman 0:0791c1fece8e 604 tcpip_callback((void (*)(void *))(netif_poll), netif);
RodColeman 0:0791c1fece8e 605 #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */
RodColeman 0:0791c1fece8e 606
RodColeman 0:0791c1fece8e 607 return ERR_OK;
RodColeman 0:0791c1fece8e 608 }
RodColeman 0:0791c1fece8e 609
RodColeman 0:0791c1fece8e 610 /**
RodColeman 0:0791c1fece8e 611 * Call netif_poll() in the main loop of your application. This is to prevent
RodColeman 0:0791c1fece8e 612 * reentering non-reentrant functions like tcp_input(). Packets passed to
RodColeman 0:0791c1fece8e 613 * netif_loop_output() are put on a list that is passed to netif->input() by
RodColeman 0:0791c1fece8e 614 * netif_poll().
RodColeman 0:0791c1fece8e 615 */
RodColeman 0:0791c1fece8e 616 void
RodColeman 0:0791c1fece8e 617 netif_poll(struct netif *netif)
RodColeman 0:0791c1fece8e 618 {
RodColeman 0:0791c1fece8e 619 struct pbuf *in;
RodColeman 0:0791c1fece8e 620 SYS_ARCH_DECL_PROTECT(lev);
RodColeman 0:0791c1fece8e 621
RodColeman 0:0791c1fece8e 622 do {
RodColeman 0:0791c1fece8e 623 /* Get a packet from the list. With SYS_LIGHTWEIGHT_PROT=1, this is protected */
RodColeman 0:0791c1fece8e 624 SYS_ARCH_PROTECT(lev);
RodColeman 0:0791c1fece8e 625 in = netif->loop_first;
RodColeman 0:0791c1fece8e 626 if(in != NULL) {
RodColeman 0:0791c1fece8e 627 struct pbuf *in_end = in;
RodColeman 0:0791c1fece8e 628 #if LWIP_LOOPBACK_MAX_PBUFS
RodColeman 0:0791c1fece8e 629 u8_t clen = pbuf_clen(in);
RodColeman 0:0791c1fece8e 630 /* adjust the number of pbufs on queue */
RodColeman 0:0791c1fece8e 631 LWIP_ASSERT("netif->loop_cnt_current underflow",
RodColeman 0:0791c1fece8e 632 ((netif->loop_cnt_current - clen) < netif->loop_cnt_current));
RodColeman 0:0791c1fece8e 633 netif->loop_cnt_current -= clen;
RodColeman 0:0791c1fece8e 634 #endif /* LWIP_LOOPBACK_MAX_PBUFS */
RodColeman 0:0791c1fece8e 635 while(in_end->len != in_end->tot_len) {
RodColeman 0:0791c1fece8e 636 LWIP_ASSERT("bogus pbuf: len != tot_len but next == NULL!", in_end->next != NULL);
RodColeman 0:0791c1fece8e 637 in_end = in_end->next;
RodColeman 0:0791c1fece8e 638 }
RodColeman 0:0791c1fece8e 639 /* 'in_end' now points to the last pbuf from 'in' */
RodColeman 0:0791c1fece8e 640 if(in_end == netif->loop_last) {
RodColeman 0:0791c1fece8e 641 /* this was the last pbuf in the list */
RodColeman 0:0791c1fece8e 642 netif->loop_first = netif->loop_last = NULL;
RodColeman 0:0791c1fece8e 643 } else {
RodColeman 0:0791c1fece8e 644 /* pop the pbuf off the list */
RodColeman 0:0791c1fece8e 645 netif->loop_first = in_end->next;
RodColeman 0:0791c1fece8e 646 LWIP_ASSERT("should not be null since first != last!", netif->loop_first != NULL);
RodColeman 0:0791c1fece8e 647 }
RodColeman 0:0791c1fece8e 648 /* De-queue the pbuf from its successors on the 'loop_' list. */
RodColeman 0:0791c1fece8e 649 in_end->next = NULL;
RodColeman 0:0791c1fece8e 650 }
RodColeman 0:0791c1fece8e 651 SYS_ARCH_UNPROTECT(lev);
RodColeman 0:0791c1fece8e 652
RodColeman 0:0791c1fece8e 653 if(in != NULL) {
RodColeman 0:0791c1fece8e 654 /* loopback packets are always IP packets! */
RodColeman 0:0791c1fece8e 655 if(ip_input(in, netif) != ERR_OK) {
RodColeman 0:0791c1fece8e 656 pbuf_free(in);
RodColeman 0:0791c1fece8e 657 }
RodColeman 0:0791c1fece8e 658 /* Don't reference the packet any more! */
RodColeman 0:0791c1fece8e 659 in = NULL;
RodColeman 0:0791c1fece8e 660 }
RodColeman 0:0791c1fece8e 661 /* go on while there is a packet on the list */
RodColeman 0:0791c1fece8e 662 } while(netif->loop_first != NULL);
RodColeman 0:0791c1fece8e 663 }
RodColeman 0:0791c1fece8e 664
RodColeman 0:0791c1fece8e 665 #if !LWIP_NETIF_LOOPBACK_MULTITHREADING
RodColeman 0:0791c1fece8e 666 /**
RodColeman 0:0791c1fece8e 667 * Calls netif_poll() for every netif on the netif_list.
RodColeman 0:0791c1fece8e 668 */
RodColeman 0:0791c1fece8e 669 void
RodColeman 0:0791c1fece8e 670 netif_poll_all(void)
RodColeman 0:0791c1fece8e 671 {
RodColeman 0:0791c1fece8e 672 struct netif *netif = netif_list;
RodColeman 0:0791c1fece8e 673 /* loop through netifs */
RodColeman 0:0791c1fece8e 674 while (netif != NULL) {
RodColeman 0:0791c1fece8e 675 netif_poll(netif);
RodColeman 0:0791c1fece8e 676 /* proceed to next network interface */
RodColeman 0:0791c1fece8e 677 netif = netif->next;
RodColeman 0:0791c1fece8e 678 }
RodColeman 0:0791c1fece8e 679 }
RodColeman 0:0791c1fece8e 680 #endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */
RodColeman 0:0791c1fece8e 681 #endif /* ENABLE_LOOPBACK */