Richard Blimmel / Mbed 2 deprecated CIG_HTTPClient

HTTPClient using static IP

Dependencies:   mbed

NetServices/lwip/core/netif.c@0:d8f2f7d5f31b, 2011-05-30 (annotated)

Committer:
mr_q
Date:
Mon May 30 11:53:37 2011 +0000
Revision:
0:d8f2f7d5f31b
v0.01 Draft

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mr_q 0:d8f2f7d5f31b 1 /**
mr_q 0:d8f2f7d5f31b 2 * @file
mr_q 0:d8f2f7d5f31b 3 * lwIP network interface abstraction
mr_q 0:d8f2f7d5f31b 4 *
mr_q 0:d8f2f7d5f31b 5 */
mr_q 0:d8f2f7d5f31b 6
mr_q 0:d8f2f7d5f31b 7 /*
mr_q 0:d8f2f7d5f31b 8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
mr_q 0:d8f2f7d5f31b 9 * All rights reserved.
mr_q 0:d8f2f7d5f31b 10 *
mr_q 0:d8f2f7d5f31b 11 * Redistribution and use in source and binary forms, with or without modification,
mr_q 0:d8f2f7d5f31b 12 * are permitted provided that the following conditions are met:
mr_q 0:d8f2f7d5f31b 13 *
mr_q 0:d8f2f7d5f31b 14 * 1. Redistributions of source code must retain the above copyright notice,
mr_q 0:d8f2f7d5f31b 15 * this list of conditions and the following disclaimer.
mr_q 0:d8f2f7d5f31b 16 * 2. Redistributions in binary form must reproduce the above copyright notice,
mr_q 0:d8f2f7d5f31b 17 * this list of conditions and the following disclaimer in the documentation
mr_q 0:d8f2f7d5f31b 18 * and/or other materials provided with the distribution.
mr_q 0:d8f2f7d5f31b 19 * 3. The name of the author may not be used to endorse or promote products
mr_q 0:d8f2f7d5f31b 20 * derived from this software without specific prior written permission.
mr_q 0:d8f2f7d5f31b 21 *
mr_q 0:d8f2f7d5f31b 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
mr_q 0:d8f2f7d5f31b 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
mr_q 0:d8f2f7d5f31b 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
mr_q 0:d8f2f7d5f31b 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
mr_q 0:d8f2f7d5f31b 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
mr_q 0:d8f2f7d5f31b 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
mr_q 0:d8f2f7d5f31b 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
mr_q 0:d8f2f7d5f31b 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
mr_q 0:d8f2f7d5f31b 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
mr_q 0:d8f2f7d5f31b 31 * OF SUCH DAMAGE.
mr_q 0:d8f2f7d5f31b 32 *
mr_q 0:d8f2f7d5f31b 33 * This file is part of the lwIP TCP/IP stack.
mr_q 0:d8f2f7d5f31b 34 *
mr_q 0:d8f2f7d5f31b 35 * Author: Adam Dunkels <adam@sics.se>
mr_q 0:d8f2f7d5f31b 36 *
mr_q 0:d8f2f7d5f31b 37 */
mr_q 0:d8f2f7d5f31b 38
mr_q 0:d8f2f7d5f31b 39 #include "lwip/opt.h"
mr_q 0:d8f2f7d5f31b 40
mr_q 0:d8f2f7d5f31b 41 #include "lwip/def.h"
mr_q 0:d8f2f7d5f31b 42 #include "lwip/ip_addr.h"
mr_q 0:d8f2f7d5f31b 43 #include "lwip/netif.h"
mr_q 0:d8f2f7d5f31b 44 #include "lwip/tcp_impl.h"
mr_q 0:d8f2f7d5f31b 45 #include "lwip/snmp.h"
mr_q 0:d8f2f7d5f31b 46 #include "lwip/igmp.h"
mr_q 0:d8f2f7d5f31b 47 #include "netif/etharp.h"
mr_q 0:d8f2f7d5f31b 48 #include "lwip/stats.h"
mr_q 0:d8f2f7d5f31b 49 #if ENABLE_LOOPBACK
mr_q 0:d8f2f7d5f31b 50 #include "lwip/sys.h"
mr_q 0:d8f2f7d5f31b 51 #if LWIP_NETIF_LOOPBACK_MULTITHREADING
mr_q 0:d8f2f7d5f31b 52 #include "lwip/tcpip.h"
mr_q 0:d8f2f7d5f31b 53 #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */
mr_q 0:d8f2f7d5f31b 54 #endif /* ENABLE_LOOPBACK */
mr_q 0:d8f2f7d5f31b 55
mr_q 0:d8f2f7d5f31b 56 #if LWIP_AUTOIP
mr_q 0:d8f2f7d5f31b 57 #include "lwip/autoip.h"
mr_q 0:d8f2f7d5f31b 58 #endif /* LWIP_AUTOIP */
mr_q 0:d8f2f7d5f31b 59 #if LWIP_DHCP
mr_q 0:d8f2f7d5f31b 60 #include "lwip/dhcp.h"
mr_q 0:d8f2f7d5f31b 61 #endif /* LWIP_DHCP */
mr_q 0:d8f2f7d5f31b 62
mr_q 0:d8f2f7d5f31b 63 #if LWIP_NETIF_STATUS_CALLBACK
mr_q 0:d8f2f7d5f31b 64 #define NETIF_STATUS_CALLBACK(n) do{ if (n->status_callback) { (n->status_callback)(n); }}while(0)
mr_q 0:d8f2f7d5f31b 65 #else
mr_q 0:d8f2f7d5f31b 66 #define NETIF_STATUS_CALLBACK(n)
mr_q 0:d8f2f7d5f31b 67 #endif /* LWIP_NETIF_STATUS_CALLBACK */
mr_q 0:d8f2f7d5f31b 68
mr_q 0:d8f2f7d5f31b 69 #if LWIP_NETIF_LINK_CALLBACK
mr_q 0:d8f2f7d5f31b 70 #define NETIF_LINK_CALLBACK(n) do{ if (n->link_callback) { (n->link_callback)(n); }}while(0)
mr_q 0:d8f2f7d5f31b 71 #else
mr_q 0:d8f2f7d5f31b 72 #define NETIF_LINK_CALLBACK(n)
mr_q 0:d8f2f7d5f31b 73 #endif /* LWIP_NETIF_LINK_CALLBACK */
mr_q 0:d8f2f7d5f31b 74
mr_q 0:d8f2f7d5f31b 75 struct netif *netif_list;
mr_q 0:d8f2f7d5f31b 76 struct netif *netif_default;
mr_q 0:d8f2f7d5f31b 77
mr_q 0:d8f2f7d5f31b 78 #if LWIP_HAVE_LOOPIF
mr_q 0:d8f2f7d5f31b 79 static struct netif loop_netif;
mr_q 0:d8f2f7d5f31b 80
mr_q 0:d8f2f7d5f31b 81 /**
mr_q 0:d8f2f7d5f31b 82 * Initialize a lwip network interface structure for a loopback interface
mr_q 0:d8f2f7d5f31b 83 *
mr_q 0:d8f2f7d5f31b 84 * @param netif the lwip network interface structure for this loopif
mr_q 0:d8f2f7d5f31b 85 * @return ERR_OK if the loopif is initialized
mr_q 0:d8f2f7d5f31b 86 * ERR_MEM if private data couldn't be allocated
mr_q 0:d8f2f7d5f31b 87 */
mr_q 0:d8f2f7d5f31b 88 static err_t
mr_q 0:d8f2f7d5f31b 89 netif_loopif_init(struct netif *netif)
mr_q 0:d8f2f7d5f31b 90 {
mr_q 0:d8f2f7d5f31b 91 /* initialize the snmp variables and counters inside the struct netif
mr_q 0:d8f2f7d5f31b 92 * ifSpeed: no assumption can be made!
mr_q 0:d8f2f7d5f31b 93 */
mr_q 0:d8f2f7d5f31b 94 NETIF_INIT_SNMP(netif, snmp_ifType_softwareLoopback, 0);
mr_q 0:d8f2f7d5f31b 95
mr_q 0:d8f2f7d5f31b 96 netif->name[0] = 'l';
mr_q 0:d8f2f7d5f31b 97 netif->name[1] = 'o';
mr_q 0:d8f2f7d5f31b 98 netif->output = netif_loop_output;
mr_q 0:d8f2f7d5f31b 99 return ERR_OK;
mr_q 0:d8f2f7d5f31b 100 }
mr_q 0:d8f2f7d5f31b 101 #endif /* LWIP_HAVE_LOOPIF */
mr_q 0:d8f2f7d5f31b 102
mr_q 0:d8f2f7d5f31b 103 void
mr_q 0:d8f2f7d5f31b 104 netif_init(void)
mr_q 0:d8f2f7d5f31b 105 {
mr_q 0:d8f2f7d5f31b 106 #if LWIP_HAVE_LOOPIF
mr_q 0:d8f2f7d5f31b 107 ip_addr_t loop_ipaddr, loop_netmask, loop_gw;
mr_q 0:d8f2f7d5f31b 108 IP4_ADDR(&loop_gw, 127,0,0,1);
mr_q 0:d8f2f7d5f31b 109 IP4_ADDR(&loop_ipaddr, 127,0,0,1);
mr_q 0:d8f2f7d5f31b 110 IP4_ADDR(&loop_netmask, 255,0,0,0);
mr_q 0:d8f2f7d5f31b 111
mr_q 0:d8f2f7d5f31b 112 #if NO_SYS
mr_q 0:d8f2f7d5f31b 113 netif_add(&loop_netif, &loop_ipaddr, &loop_netmask, &loop_gw, NULL, netif_loopif_init, ip_input);
mr_q 0:d8f2f7d5f31b 114 #else /* NO_SYS */
mr_q 0:d8f2f7d5f31b 115 netif_add(&loop_netif, &loop_ipaddr, &loop_netmask, &loop_gw, NULL, netif_loopif_init, tcpip_input);
mr_q 0:d8f2f7d5f31b 116 #endif /* NO_SYS */
mr_q 0:d8f2f7d5f31b 117 netif_set_up(&loop_netif);
mr_q 0:d8f2f7d5f31b 118
mr_q 0:d8f2f7d5f31b 119 #endif /* LWIP_HAVE_LOOPIF */
mr_q 0:d8f2f7d5f31b 120 }
mr_q 0:d8f2f7d5f31b 121
mr_q 0:d8f2f7d5f31b 122 /**
mr_q 0:d8f2f7d5f31b 123 * Add a network interface to the list of lwIP netifs.
mr_q 0:d8f2f7d5f31b 124 *
mr_q 0:d8f2f7d5f31b 125 * @param netif a pre-allocated netif structure
mr_q 0:d8f2f7d5f31b 126 * @param ipaddr IP address for the new netif
mr_q 0:d8f2f7d5f31b 127 * @param netmask network mask for the new netif
mr_q 0:d8f2f7d5f31b 128 * @param gw default gateway IP address for the new netif
mr_q 0:d8f2f7d5f31b 129 * @param state opaque data passed to the new netif
mr_q 0:d8f2f7d5f31b 130 * @param init callback function that initializes the interface
mr_q 0:d8f2f7d5f31b 131 * @param input callback function that is called to pass
mr_q 0:d8f2f7d5f31b 132 * ingress packets up in the protocol layer stack.
mr_q 0:d8f2f7d5f31b 133 *
mr_q 0:d8f2f7d5f31b 134 * @return netif, or NULL if failed.
mr_q 0:d8f2f7d5f31b 135 */
mr_q 0:d8f2f7d5f31b 136 struct netif *
mr_q 0:d8f2f7d5f31b 137 netif_add(struct netif *netif, ip_addr_t *ipaddr, ip_addr_t *netmask,
mr_q 0:d8f2f7d5f31b 138 ip_addr_t *gw, void *state, netif_init_fn init, netif_input_fn input)
mr_q 0:d8f2f7d5f31b 139 {
mr_q 0:d8f2f7d5f31b 140 static u8_t netifnum = 0;
mr_q 0:d8f2f7d5f31b 141
mr_q 0:d8f2f7d5f31b 142 LWIP_ASSERT("No init function given", init != NULL);
mr_q 0:d8f2f7d5f31b 143
mr_q 0:d8f2f7d5f31b 144 /* reset new interface configuration state */
mr_q 0:d8f2f7d5f31b 145 ip_addr_set_zero(&netif->ip_addr);
mr_q 0:d8f2f7d5f31b 146 ip_addr_set_zero(&netif->netmask);
mr_q 0:d8f2f7d5f31b 147 ip_addr_set_zero(&netif->gw);
mr_q 0:d8f2f7d5f31b 148 netif->flags = 0;
mr_q 0:d8f2f7d5f31b 149 #if LWIP_DHCP
mr_q 0:d8f2f7d5f31b 150 /* netif not under DHCP control by default */
mr_q 0:d8f2f7d5f31b 151 netif->dhcp = NULL;
mr_q 0:d8f2f7d5f31b 152 #endif /* LWIP_DHCP */
mr_q 0:d8f2f7d5f31b 153 #if LWIP_AUTOIP
mr_q 0:d8f2f7d5f31b 154 /* netif not under AutoIP control by default */
mr_q 0:d8f2f7d5f31b 155 netif->autoip = NULL;
mr_q 0:d8f2f7d5f31b 156 #endif /* LWIP_AUTOIP */
mr_q 0:d8f2f7d5f31b 157 #if LWIP_NETIF_STATUS_CALLBACK
mr_q 0:d8f2f7d5f31b 158 netif->status_callback = NULL;
mr_q 0:d8f2f7d5f31b 159 #endif /* LWIP_NETIF_STATUS_CALLBACK */
mr_q 0:d8f2f7d5f31b 160 #if LWIP_NETIF_LINK_CALLBACK
mr_q 0:d8f2f7d5f31b 161 netif->link_callback = NULL;
mr_q 0:d8f2f7d5f31b 162 #endif /* LWIP_NETIF_LINK_CALLBACK */
mr_q 0:d8f2f7d5f31b 163 #if LWIP_IGMP
mr_q 0:d8f2f7d5f31b 164 netif->igmp_mac_filter = NULL;
mr_q 0:d8f2f7d5f31b 165 #endif /* LWIP_IGMP */
mr_q 0:d8f2f7d5f31b 166 #if ENABLE_LOOPBACK
mr_q 0:d8f2f7d5f31b 167 netif->loop_first = NULL;
mr_q 0:d8f2f7d5f31b 168 netif->loop_last = NULL;
mr_q 0:d8f2f7d5f31b 169 #endif /* ENABLE_LOOPBACK */
mr_q 0:d8f2f7d5f31b 170
mr_q 0:d8f2f7d5f31b 171 /* remember netif specific state information data */
mr_q 0:d8f2f7d5f31b 172 netif->state = state;
mr_q 0:d8f2f7d5f31b 173 netif->num = netifnum++;
mr_q 0:d8f2f7d5f31b 174 netif->input = input;
mr_q 0:d8f2f7d5f31b 175 #if LWIP_NETIF_HWADDRHINT
mr_q 0:d8f2f7d5f31b 176 netif->addr_hint = NULL;
mr_q 0:d8f2f7d5f31b 177 #endif /* LWIP_NETIF_HWADDRHINT*/
mr_q 0:d8f2f7d5f31b 178 #if ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS
mr_q 0:d8f2f7d5f31b 179 netif->loop_cnt_current = 0;
mr_q 0:d8f2f7d5f31b 180 #endif /* ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS */
mr_q 0:d8f2f7d5f31b 181
mr_q 0:d8f2f7d5f31b 182 netif_set_addr(netif, ipaddr, netmask, gw);
mr_q 0:d8f2f7d5f31b 183
mr_q 0:d8f2f7d5f31b 184 /* call user specified initialization function for netif */
mr_q 0:d8f2f7d5f31b 185 if (init(netif) != ERR_OK) {
mr_q 0:d8f2f7d5f31b 186 return NULL;
mr_q 0:d8f2f7d5f31b 187 }
mr_q 0:d8f2f7d5f31b 188
mr_q 0:d8f2f7d5f31b 189 /* add this netif to the list */
mr_q 0:d8f2f7d5f31b 190 netif->next = netif_list;
mr_q 0:d8f2f7d5f31b 191 netif_list = netif;
mr_q 0:d8f2f7d5f31b 192 snmp_inc_iflist();
mr_q 0:d8f2f7d5f31b 193
mr_q 0:d8f2f7d5f31b 194 #if LWIP_IGMP
mr_q 0:d8f2f7d5f31b 195 /* start IGMP processing */
mr_q 0:d8f2f7d5f31b 196 if (netif->flags & NETIF_FLAG_IGMP) {
mr_q 0:d8f2f7d5f31b 197 igmp_start(netif);
mr_q 0:d8f2f7d5f31b 198 }
mr_q 0:d8f2f7d5f31b 199 #endif /* LWIP_IGMP */
mr_q 0:d8f2f7d5f31b 200
mr_q 0:d8f2f7d5f31b 201 LWIP_DEBUGF(NETIF_DEBUG, ("netif: added interface %c%c IP addr ",
mr_q 0:d8f2f7d5f31b 202 netif->name[0], netif->name[1]));
mr_q 0:d8f2f7d5f31b 203 ip_addr_debug_print(NETIF_DEBUG, ipaddr);
mr_q 0:d8f2f7d5f31b 204 LWIP_DEBUGF(NETIF_DEBUG, (" netmask "));
mr_q 0:d8f2f7d5f31b 205 ip_addr_debug_print(NETIF_DEBUG, netmask);
mr_q 0:d8f2f7d5f31b 206 LWIP_DEBUGF(NETIF_DEBUG, (" gw "));
mr_q 0:d8f2f7d5f31b 207 ip_addr_debug_print(NETIF_DEBUG, gw);
mr_q 0:d8f2f7d5f31b 208 LWIP_DEBUGF(NETIF_DEBUG, ("\n"));
mr_q 0:d8f2f7d5f31b 209 return netif;
mr_q 0:d8f2f7d5f31b 210 }
mr_q 0:d8f2f7d5f31b 211
mr_q 0:d8f2f7d5f31b 212 /**
mr_q 0:d8f2f7d5f31b 213 * Change IP address configuration for a network interface (including netmask
mr_q 0:d8f2f7d5f31b 214 * and default gateway).
mr_q 0:d8f2f7d5f31b 215 *
mr_q 0:d8f2f7d5f31b 216 * @param netif the network interface to change
mr_q 0:d8f2f7d5f31b 217 * @param ipaddr the new IP address
mr_q 0:d8f2f7d5f31b 218 * @param netmask the new netmask
mr_q 0:d8f2f7d5f31b 219 * @param gw the new default gateway
mr_q 0:d8f2f7d5f31b 220 */
mr_q 0:d8f2f7d5f31b 221 void
mr_q 0:d8f2f7d5f31b 222 netif_set_addr(struct netif *netif, ip_addr_t *ipaddr, ip_addr_t *netmask,
mr_q 0:d8f2f7d5f31b 223 ip_addr_t *gw)
mr_q 0:d8f2f7d5f31b 224 {
mr_q 0:d8f2f7d5f31b 225 netif_set_ipaddr(netif, ipaddr);
mr_q 0:d8f2f7d5f31b 226 netif_set_netmask(netif, netmask);
mr_q 0:d8f2f7d5f31b 227 netif_set_gw(netif, gw);
mr_q 0:d8f2f7d5f31b 228 }
mr_q 0:d8f2f7d5f31b 229
mr_q 0:d8f2f7d5f31b 230 /**
mr_q 0:d8f2f7d5f31b 231 * Remove a network interface from the list of lwIP netifs.
mr_q 0:d8f2f7d5f31b 232 *
mr_q 0:d8f2f7d5f31b 233 * @param netif the network interface to remove
mr_q 0:d8f2f7d5f31b 234 */
mr_q 0:d8f2f7d5f31b 235 void
mr_q 0:d8f2f7d5f31b 236 netif_remove(struct netif *netif)
mr_q 0:d8f2f7d5f31b 237 {
mr_q 0:d8f2f7d5f31b 238 if (netif == NULL) {
mr_q 0:d8f2f7d5f31b 239 return;
mr_q 0:d8f2f7d5f31b 240 }
mr_q 0:d8f2f7d5f31b 241
mr_q 0:d8f2f7d5f31b 242 #if LWIP_IGMP
mr_q 0:d8f2f7d5f31b 243 /* stop IGMP processing */
mr_q 0:d8f2f7d5f31b 244 if (netif->flags & NETIF_FLAG_IGMP) {
mr_q 0:d8f2f7d5f31b 245 igmp_stop(netif);
mr_q 0:d8f2f7d5f31b 246 }
mr_q 0:d8f2f7d5f31b 247 #endif /* LWIP_IGMP */
mr_q 0:d8f2f7d5f31b 248 if (netif_is_up(netif)) {
mr_q 0:d8f2f7d5f31b 249 /* set netif down before removing (call callback function) */
mr_q 0:d8f2f7d5f31b 250 netif_set_down(netif);
mr_q 0:d8f2f7d5f31b 251 }
mr_q 0:d8f2f7d5f31b 252
mr_q 0:d8f2f7d5f31b 253 snmp_delete_ipaddridx_tree(netif);
mr_q 0:d8f2f7d5f31b 254
mr_q 0:d8f2f7d5f31b 255 /* is it the first netif? */
mr_q 0:d8f2f7d5f31b 256 if (netif_list == netif) {
mr_q 0:d8f2f7d5f31b 257 netif_list = netif->next;
mr_q 0:d8f2f7d5f31b 258 } else {
mr_q 0:d8f2f7d5f31b 259 /* look for netif further down the list */
mr_q 0:d8f2f7d5f31b 260 struct netif * tmpNetif;
mr_q 0:d8f2f7d5f31b 261 for (tmpNetif = netif_list; tmpNetif != NULL; tmpNetif = tmpNetif->next) {
mr_q 0:d8f2f7d5f31b 262 if (tmpNetif->next == netif) {
mr_q 0:d8f2f7d5f31b 263 tmpNetif->next = netif->next;
mr_q 0:d8f2f7d5f31b 264 break;
mr_q 0:d8f2f7d5f31b 265 }
mr_q 0:d8f2f7d5f31b 266 }
mr_q 0:d8f2f7d5f31b 267 if (tmpNetif == NULL)
mr_q 0:d8f2f7d5f31b 268 return; /* we didn't find any netif today */
mr_q 0:d8f2f7d5f31b 269 }
mr_q 0:d8f2f7d5f31b 270 snmp_dec_iflist();
mr_q 0:d8f2f7d5f31b 271 /* this netif is default? */
mr_q 0:d8f2f7d5f31b 272 if (netif_default == netif) {
mr_q 0:d8f2f7d5f31b 273 /* reset default netif */
mr_q 0:d8f2f7d5f31b 274 netif_set_default(NULL);
mr_q 0:d8f2f7d5f31b 275 }
mr_q 0:d8f2f7d5f31b 276 LWIP_DEBUGF( NETIF_DEBUG, ("netif_remove: removed netif\n") );
mr_q 0:d8f2f7d5f31b 277 }
mr_q 0:d8f2f7d5f31b 278
mr_q 0:d8f2f7d5f31b 279 /**
mr_q 0:d8f2f7d5f31b 280 * Find a network interface by searching for its name
mr_q 0:d8f2f7d5f31b 281 *
mr_q 0:d8f2f7d5f31b 282 * @param name the name of the netif (like netif->name) plus concatenated number
mr_q 0:d8f2f7d5f31b 283 * in ascii representation (e.g. 'en0')
mr_q 0:d8f2f7d5f31b 284 */
mr_q 0:d8f2f7d5f31b 285 struct netif *
mr_q 0:d8f2f7d5f31b 286 netif_find(char *name)
mr_q 0:d8f2f7d5f31b 287 {
mr_q 0:d8f2f7d5f31b 288 struct netif *netif;
mr_q 0:d8f2f7d5f31b 289 u8_t num;
mr_q 0:d8f2f7d5f31b 290
mr_q 0:d8f2f7d5f31b 291 if (name == NULL) {
mr_q 0:d8f2f7d5f31b 292 return NULL;
mr_q 0:d8f2f7d5f31b 293 }
mr_q 0:d8f2f7d5f31b 294
mr_q 0:d8f2f7d5f31b 295 num = name[2] - '0';
mr_q 0:d8f2f7d5f31b 296
mr_q 0:d8f2f7d5f31b 297 for(netif = netif_list; netif != NULL; netif = netif->next) {
mr_q 0:d8f2f7d5f31b 298 if (num == netif->num &&
mr_q 0:d8f2f7d5f31b 299 name[0] == netif->name[0] &&
mr_q 0:d8f2f7d5f31b 300 name[1] == netif->name[1]) {
mr_q 0:d8f2f7d5f31b 301 LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: found %c%c\n", name[0], name[1]));
mr_q 0:d8f2f7d5f31b 302 return netif;
mr_q 0:d8f2f7d5f31b 303 }
mr_q 0:d8f2f7d5f31b 304 }
mr_q 0:d8f2f7d5f31b 305 LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: didn't find %c%c\n", name[0], name[1]));
mr_q 0:d8f2f7d5f31b 306 return NULL;
mr_q 0:d8f2f7d5f31b 307 }
mr_q 0:d8f2f7d5f31b 308
mr_q 0:d8f2f7d5f31b 309 /**
mr_q 0:d8f2f7d5f31b 310 * Change the IP address of a network interface
mr_q 0:d8f2f7d5f31b 311 *
mr_q 0:d8f2f7d5f31b 312 * @param netif the network interface to change
mr_q 0:d8f2f7d5f31b 313 * @param ipaddr the new IP address
mr_q 0:d8f2f7d5f31b 314 *
mr_q 0:d8f2f7d5f31b 315 * @note call netif_set_addr() if you also want to change netmask and
mr_q 0:d8f2f7d5f31b 316 * default gateway
mr_q 0:d8f2f7d5f31b 317 */
mr_q 0:d8f2f7d5f31b 318 void
mr_q 0:d8f2f7d5f31b 319 netif_set_ipaddr(struct netif *netif, ip_addr_t *ipaddr)
mr_q 0:d8f2f7d5f31b 320 {
mr_q 0:d8f2f7d5f31b 321 /* TODO: Handling of obsolete pcbs */
mr_q 0:d8f2f7d5f31b 322 /* See: http://mail.gnu.org/archive/html/lwip-users/2003-03/msg00118.html */
mr_q 0:d8f2f7d5f31b 323 #if LWIP_TCP
mr_q 0:d8f2f7d5f31b 324 struct tcp_pcb *pcb;
mr_q 0:d8f2f7d5f31b 325 struct tcp_pcb_listen *lpcb;
mr_q 0:d8f2f7d5f31b 326
mr_q 0:d8f2f7d5f31b 327 /* address is actually being changed? */
mr_q 0:d8f2f7d5f31b 328 if ((ip_addr_cmp(ipaddr, &(netif->ip_addr))) == 0) {
mr_q 0:d8f2f7d5f31b 329 /* extern struct tcp_pcb *tcp_active_pcbs; defined by tcp.h */
mr_q 0:d8f2f7d5f31b 330 LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_set_ipaddr: netif address being changed\n"));
mr_q 0:d8f2f7d5f31b 331 pcb = tcp_active_pcbs;
mr_q 0:d8f2f7d5f31b 332 while (pcb != NULL) {
mr_q 0:d8f2f7d5f31b 333 /* PCB bound to current local interface address? */
mr_q 0:d8f2f7d5f31b 334 if (ip_addr_cmp(&(pcb->local_ip), &(netif->ip_addr))
mr_q 0:d8f2f7d5f31b 335 #if LWIP_AUTOIP
mr_q 0:d8f2f7d5f31b 336 /* connections to link-local addresses must persist (RFC3927 ch. 1.9) */
mr_q 0:d8f2f7d5f31b 337 && !ip_addr_islinklocal(&(pcb->local_ip))
mr_q 0:d8f2f7d5f31b 338 #endif /* LWIP_AUTOIP */
mr_q 0:d8f2f7d5f31b 339 ) {
mr_q 0:d8f2f7d5f31b 340 /* this connection must be aborted */
mr_q 0:d8f2f7d5f31b 341 struct tcp_pcb *next = pcb->next;
mr_q 0:d8f2f7d5f31b 342 LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_set_ipaddr: aborting TCP pcb %p\n", (void *)pcb));
mr_q 0:d8f2f7d5f31b 343 tcp_abort(pcb);
mr_q 0:d8f2f7d5f31b 344 pcb = next;
mr_q 0:d8f2f7d5f31b 345 } else {
mr_q 0:d8f2f7d5f31b 346 pcb = pcb->next;
mr_q 0:d8f2f7d5f31b 347 }
mr_q 0:d8f2f7d5f31b 348 }
mr_q 0:d8f2f7d5f31b 349 for (lpcb = tcp_listen_pcbs.listen_pcbs; lpcb != NULL; lpcb = lpcb->next) {
mr_q 0:d8f2f7d5f31b 350 /* PCB bound to current local interface address? */
mr_q 0:d8f2f7d5f31b 351 if ((!(ip_addr_isany(&(lpcb->local_ip)))) &&
mr_q 0:d8f2f7d5f31b 352 (ip_addr_cmp(&(lpcb->local_ip), &(netif->ip_addr)))) {
mr_q 0:d8f2f7d5f31b 353 /* The PCB is listening to the old ipaddr and
mr_q 0:d8f2f7d5f31b 354 * is set to listen to the new one instead */
mr_q 0:d8f2f7d5f31b 355 ip_addr_set(&(lpcb->local_ip), ipaddr);
mr_q 0:d8f2f7d5f31b 356 }
mr_q 0:d8f2f7d5f31b 357 }
mr_q 0:d8f2f7d5f31b 358 }
mr_q 0:d8f2f7d5f31b 359 #endif
mr_q 0:d8f2f7d5f31b 360 snmp_delete_ipaddridx_tree(netif);
mr_q 0:d8f2f7d5f31b 361 snmp_delete_iprteidx_tree(0,netif);
mr_q 0:d8f2f7d5f31b 362 /* set new IP address to netif */
mr_q 0:d8f2f7d5f31b 363 ip_addr_set(&(netif->ip_addr), ipaddr);
mr_q 0:d8f2f7d5f31b 364 snmp_insert_ipaddridx_tree(netif);
mr_q 0:d8f2f7d5f31b 365 snmp_insert_iprteidx_tree(0,netif);
mr_q 0:d8f2f7d5f31b 366
mr_q 0:d8f2f7d5f31b 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",
mr_q 0:d8f2f7d5f31b 368 netif->name[0], netif->name[1],
mr_q 0:d8f2f7d5f31b 369 ip4_addr1_16(&netif->ip_addr),
mr_q 0:d8f2f7d5f31b 370 ip4_addr2_16(&netif->ip_addr),
mr_q 0:d8f2f7d5f31b 371 ip4_addr3_16(&netif->ip_addr),
mr_q 0:d8f2f7d5f31b 372 ip4_addr4_16(&netif->ip_addr)));
mr_q 0:d8f2f7d5f31b 373 }
mr_q 0:d8f2f7d5f31b 374
mr_q 0:d8f2f7d5f31b 375 /**
mr_q 0:d8f2f7d5f31b 376 * Change the default gateway for a network interface
mr_q 0:d8f2f7d5f31b 377 *
mr_q 0:d8f2f7d5f31b 378 * @param netif the network interface to change
mr_q 0:d8f2f7d5f31b 379 * @param gw the new default gateway
mr_q 0:d8f2f7d5f31b 380 *
mr_q 0:d8f2f7d5f31b 381 * @note call netif_set_addr() if you also want to change ip address and netmask
mr_q 0:d8f2f7d5f31b 382 */
mr_q 0:d8f2f7d5f31b 383 void
mr_q 0:d8f2f7d5f31b 384 netif_set_gw(struct netif *netif, ip_addr_t *gw)
mr_q 0:d8f2f7d5f31b 385 {
mr_q 0:d8f2f7d5f31b 386 ip_addr_set(&(netif->gw), gw);
mr_q 0:d8f2f7d5f31b 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",
mr_q 0:d8f2f7d5f31b 388 netif->name[0], netif->name[1],
mr_q 0:d8f2f7d5f31b 389 ip4_addr1_16(&netif->gw),
mr_q 0:d8f2f7d5f31b 390 ip4_addr2_16(&netif->gw),
mr_q 0:d8f2f7d5f31b 391 ip4_addr3_16(&netif->gw),
mr_q 0:d8f2f7d5f31b 392 ip4_addr4_16(&netif->gw)));
mr_q 0:d8f2f7d5f31b 393 }
mr_q 0:d8f2f7d5f31b 394
mr_q 0:d8f2f7d5f31b 395 /**
mr_q 0:d8f2f7d5f31b 396 * Change the netmask of a network interface
mr_q 0:d8f2f7d5f31b 397 *
mr_q 0:d8f2f7d5f31b 398 * @param netif the network interface to change
mr_q 0:d8f2f7d5f31b 399 * @param netmask the new netmask
mr_q 0:d8f2f7d5f31b 400 *
mr_q 0:d8f2f7d5f31b 401 * @note call netif_set_addr() if you also want to change ip address and
mr_q 0:d8f2f7d5f31b 402 * default gateway
mr_q 0:d8f2f7d5f31b 403 */
mr_q 0:d8f2f7d5f31b 404 void
mr_q 0:d8f2f7d5f31b 405 netif_set_netmask(struct netif *netif, ip_addr_t *netmask)
mr_q 0:d8f2f7d5f31b 406 {
mr_q 0:d8f2f7d5f31b 407 snmp_delete_iprteidx_tree(0, netif);
mr_q 0:d8f2f7d5f31b 408 /* set new netmask to netif */
mr_q 0:d8f2f7d5f31b 409 ip_addr_set(&(netif->netmask), netmask);
mr_q 0:d8f2f7d5f31b 410 snmp_insert_iprteidx_tree(0, netif);
mr_q 0:d8f2f7d5f31b 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",
mr_q 0:d8f2f7d5f31b 412 netif->name[0], netif->name[1],
mr_q 0:d8f2f7d5f31b 413 ip4_addr1_16(&netif->netmask),
mr_q 0:d8f2f7d5f31b 414 ip4_addr2_16(&netif->netmask),
mr_q 0:d8f2f7d5f31b 415 ip4_addr3_16(&netif->netmask),
mr_q 0:d8f2f7d5f31b 416 ip4_addr4_16(&netif->netmask)));
mr_q 0:d8f2f7d5f31b 417 }
mr_q 0:d8f2f7d5f31b 418
mr_q 0:d8f2f7d5f31b 419 /**
mr_q 0:d8f2f7d5f31b 420 * Set a network interface as the default network interface
mr_q 0:d8f2f7d5f31b 421 * (used to output all packets for which no specific route is found)
mr_q 0:d8f2f7d5f31b 422 *
mr_q 0:d8f2f7d5f31b 423 * @param netif the default network interface
mr_q 0:d8f2f7d5f31b 424 */
mr_q 0:d8f2f7d5f31b 425 void
mr_q 0:d8f2f7d5f31b 426 netif_set_default(struct netif *netif)
mr_q 0:d8f2f7d5f31b 427 {
mr_q 0:d8f2f7d5f31b 428 if (netif == NULL) {
mr_q 0:d8f2f7d5f31b 429 /* remove default route */
mr_q 0:d8f2f7d5f31b 430 snmp_delete_iprteidx_tree(1, netif);
mr_q 0:d8f2f7d5f31b 431 } else {
mr_q 0:d8f2f7d5f31b 432 /* install default route */
mr_q 0:d8f2f7d5f31b 433 snmp_insert_iprteidx_tree(1, netif);
mr_q 0:d8f2f7d5f31b 434 }
mr_q 0:d8f2f7d5f31b 435 netif_default = netif;
mr_q 0:d8f2f7d5f31b 436 LWIP_DEBUGF(NETIF_DEBUG, ("netif: setting default interface %c%c\n",
mr_q 0:d8f2f7d5f31b 437 netif ? netif->name[0] : '\'', netif ? netif->name[1] : '\''));
mr_q 0:d8f2f7d5f31b 438 }
mr_q 0:d8f2f7d5f31b 439
mr_q 0:d8f2f7d5f31b 440 /**
mr_q 0:d8f2f7d5f31b 441 * Bring an interface up, available for processing
mr_q 0:d8f2f7d5f31b 442 * traffic.
mr_q 0:d8f2f7d5f31b 443 *
mr_q 0:d8f2f7d5f31b 444 * @note: Enabling DHCP on a down interface will make it come
mr_q 0:d8f2f7d5f31b 445 * up once configured.
mr_q 0:d8f2f7d5f31b 446 *
mr_q 0:d8f2f7d5f31b 447 * @see dhcp_start()
mr_q 0:d8f2f7d5f31b 448 */
mr_q 0:d8f2f7d5f31b 449 void netif_set_up(struct netif *netif)
mr_q 0:d8f2f7d5f31b 450 {
mr_q 0:d8f2f7d5f31b 451 if (!(netif->flags & NETIF_FLAG_UP)) {
mr_q 0:d8f2f7d5f31b 452 netif->flags |= NETIF_FLAG_UP;
mr_q 0:d8f2f7d5f31b 453
mr_q 0:d8f2f7d5f31b 454 #if LWIP_SNMP
mr_q 0:d8f2f7d5f31b 455 snmp_get_sysuptime(&netif->ts);
mr_q 0:d8f2f7d5f31b 456 #endif /* LWIP_SNMP */
mr_q 0:d8f2f7d5f31b 457
mr_q 0:d8f2f7d5f31b 458 NETIF_STATUS_CALLBACK(netif);
mr_q 0:d8f2f7d5f31b 459
mr_q 0:d8f2f7d5f31b 460 if (netif->flags & NETIF_FLAG_LINK_UP) {
mr_q 0:d8f2f7d5f31b 461 #if LWIP_ARP
mr_q 0:d8f2f7d5f31b 462 /* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */
mr_q 0:d8f2f7d5f31b 463 if (netif->flags & (NETIF_FLAG_ETHARP)) {
mr_q 0:d8f2f7d5f31b 464 etharp_gratuitous(netif);
mr_q 0:d8f2f7d5f31b 465 }
mr_q 0:d8f2f7d5f31b 466 #endif /* LWIP_ARP */
mr_q 0:d8f2f7d5f31b 467
mr_q 0:d8f2f7d5f31b 468 #if LWIP_IGMP
mr_q 0:d8f2f7d5f31b 469 /* resend IGMP memberships */
mr_q 0:d8f2f7d5f31b 470 if (netif->flags & NETIF_FLAG_IGMP) {
mr_q 0:d8f2f7d5f31b 471 igmp_report_groups( netif);
mr_q 0:d8f2f7d5f31b 472 }
mr_q 0:d8f2f7d5f31b 473 #endif /* LWIP_IGMP */
mr_q 0:d8f2f7d5f31b 474 }
mr_q 0:d8f2f7d5f31b 475 }
mr_q 0:d8f2f7d5f31b 476 }
mr_q 0:d8f2f7d5f31b 477
mr_q 0:d8f2f7d5f31b 478 /**
mr_q 0:d8f2f7d5f31b 479 * Bring an interface down, disabling any traffic processing.
mr_q 0:d8f2f7d5f31b 480 *
mr_q 0:d8f2f7d5f31b 481 * @note: Enabling DHCP on a down interface will make it come
mr_q 0:d8f2f7d5f31b 482 * up once configured.
mr_q 0:d8f2f7d5f31b 483 *
mr_q 0:d8f2f7d5f31b 484 * @see dhcp_start()
mr_q 0:d8f2f7d5f31b 485 */
mr_q 0:d8f2f7d5f31b 486 void netif_set_down(struct netif *netif)
mr_q 0:d8f2f7d5f31b 487 {
mr_q 0:d8f2f7d5f31b 488 if (netif->flags & NETIF_FLAG_UP) {
mr_q 0:d8f2f7d5f31b 489 netif->flags &= ~NETIF_FLAG_UP;
mr_q 0:d8f2f7d5f31b 490 #if LWIP_SNMP
mr_q 0:d8f2f7d5f31b 491 snmp_get_sysuptime(&netif->ts);
mr_q 0:d8f2f7d5f31b 492 #endif
mr_q 0:d8f2f7d5f31b 493
mr_q 0:d8f2f7d5f31b 494 NETIF_STATUS_CALLBACK(netif);
mr_q 0:d8f2f7d5f31b 495 }
mr_q 0:d8f2f7d5f31b 496 }
mr_q 0:d8f2f7d5f31b 497
mr_q 0:d8f2f7d5f31b 498 #if LWIP_NETIF_STATUS_CALLBACK
mr_q 0:d8f2f7d5f31b 499 /**
mr_q 0:d8f2f7d5f31b 500 * Set callback to be called when interface is brought up/down
mr_q 0:d8f2f7d5f31b 501 */
mr_q 0:d8f2f7d5f31b 502 void netif_set_status_callback(struct netif *netif, netif_status_callback_fn status_callback)
mr_q 0:d8f2f7d5f31b 503 {
mr_q 0:d8f2f7d5f31b 504 if (netif) {
mr_q 0:d8f2f7d5f31b 505 netif->status_callback = status_callback;
mr_q 0:d8f2f7d5f31b 506 }
mr_q 0:d8f2f7d5f31b 507 }
mr_q 0:d8f2f7d5f31b 508 #endif /* LWIP_NETIF_STATUS_CALLBACK */
mr_q 0:d8f2f7d5f31b 509
mr_q 0:d8f2f7d5f31b 510 /**
mr_q 0:d8f2f7d5f31b 511 * Called by a driver when its link goes up
mr_q 0:d8f2f7d5f31b 512 */
mr_q 0:d8f2f7d5f31b 513 void netif_set_link_up(struct netif *netif )
mr_q 0:d8f2f7d5f31b 514 {
mr_q 0:d8f2f7d5f31b 515 if (!(netif->flags & NETIF_FLAG_LINK_UP)) {
mr_q 0:d8f2f7d5f31b 516 netif->flags |= NETIF_FLAG_LINK_UP;
mr_q 0:d8f2f7d5f31b 517
mr_q 0:d8f2f7d5f31b 518 #if LWIP_DHCP
mr_q 0:d8f2f7d5f31b 519 if (netif->dhcp) {
mr_q 0:d8f2f7d5f31b 520 dhcp_network_changed(netif);
mr_q 0:d8f2f7d5f31b 521 }
mr_q 0:d8f2f7d5f31b 522 #endif /* LWIP_DHCP */
mr_q 0:d8f2f7d5f31b 523
mr_q 0:d8f2f7d5f31b 524 #if LWIP_AUTOIP
mr_q 0:d8f2f7d5f31b 525 if (netif->autoip) {
mr_q 0:d8f2f7d5f31b 526 autoip_network_changed(netif);
mr_q 0:d8f2f7d5f31b 527 }
mr_q 0:d8f2f7d5f31b 528 #endif /* LWIP_AUTOIP */
mr_q 0:d8f2f7d5f31b 529
mr_q 0:d8f2f7d5f31b 530 if (netif->flags & NETIF_FLAG_UP) {
mr_q 0:d8f2f7d5f31b 531 #if LWIP_ARP
mr_q 0:d8f2f7d5f31b 532 /* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */
mr_q 0:d8f2f7d5f31b 533 if (netif->flags & NETIF_FLAG_ETHARP) {
mr_q 0:d8f2f7d5f31b 534 etharp_gratuitous(netif);
mr_q 0:d8f2f7d5f31b 535 }
mr_q 0:d8f2f7d5f31b 536 #endif /* LWIP_ARP */
mr_q 0:d8f2f7d5f31b 537
mr_q 0:d8f2f7d5f31b 538 #if LWIP_IGMP
mr_q 0:d8f2f7d5f31b 539 /* resend IGMP memberships */
mr_q 0:d8f2f7d5f31b 540 if (netif->flags & NETIF_FLAG_IGMP) {
mr_q 0:d8f2f7d5f31b 541 igmp_report_groups( netif);
mr_q 0:d8f2f7d5f31b 542 }
mr_q 0:d8f2f7d5f31b 543 #endif /* LWIP_IGMP */
mr_q 0:d8f2f7d5f31b 544 }
mr_q 0:d8f2f7d5f31b 545 NETIF_LINK_CALLBACK(netif);
mr_q 0:d8f2f7d5f31b 546 }
mr_q 0:d8f2f7d5f31b 547 }
mr_q 0:d8f2f7d5f31b 548
mr_q 0:d8f2f7d5f31b 549 /**
mr_q 0:d8f2f7d5f31b 550 * Called by a driver when its link goes down
mr_q 0:d8f2f7d5f31b 551 */
mr_q 0:d8f2f7d5f31b 552 void netif_set_link_down(struct netif *netif )
mr_q 0:d8f2f7d5f31b 553 {
mr_q 0:d8f2f7d5f31b 554 if (netif->flags & NETIF_FLAG_LINK_UP) {
mr_q 0:d8f2f7d5f31b 555 netif->flags &= ~NETIF_FLAG_LINK_UP;
mr_q 0:d8f2f7d5f31b 556 NETIF_LINK_CALLBACK(netif);
mr_q 0:d8f2f7d5f31b 557 }
mr_q 0:d8f2f7d5f31b 558 }
mr_q 0:d8f2f7d5f31b 559
mr_q 0:d8f2f7d5f31b 560 #if LWIP_NETIF_LINK_CALLBACK
mr_q 0:d8f2f7d5f31b 561 /**
mr_q 0:d8f2f7d5f31b 562 * Set callback to be called when link is brought up/down
mr_q 0:d8f2f7d5f31b 563 */
mr_q 0:d8f2f7d5f31b 564 void netif_set_link_callback(struct netif *netif, netif_status_callback_fn link_callback)
mr_q 0:d8f2f7d5f31b 565 {
mr_q 0:d8f2f7d5f31b 566 if (netif) {
mr_q 0:d8f2f7d5f31b 567 netif->link_callback = link_callback;
mr_q 0:d8f2f7d5f31b 568 }
mr_q 0:d8f2f7d5f31b 569 }
mr_q 0:d8f2f7d5f31b 570 #endif /* LWIP_NETIF_LINK_CALLBACK */
mr_q 0:d8f2f7d5f31b 571
mr_q 0:d8f2f7d5f31b 572 #if ENABLE_LOOPBACK
mr_q 0:d8f2f7d5f31b 573 /**
mr_q 0:d8f2f7d5f31b 574 * Send an IP packet to be received on the same netif (loopif-like).
mr_q 0:d8f2f7d5f31b 575 * The pbuf is simply copied and handed back to netif->input.
mr_q 0:d8f2f7d5f31b 576 * In multithreaded mode, this is done directly since netif->input must put
mr_q 0:d8f2f7d5f31b 577 * the packet on a queue.
mr_q 0:d8f2f7d5f31b 578 * In callback mode, the packet is put on an internal queue and is fed to
mr_q 0:d8f2f7d5f31b 579 * netif->input by netif_poll().
mr_q 0:d8f2f7d5f31b 580 *
mr_q 0:d8f2f7d5f31b 581 * @param netif the lwip network interface structure
mr_q 0:d8f2f7d5f31b 582 * @param p the (IP) packet to 'send'
mr_q 0:d8f2f7d5f31b 583 * @param ipaddr the ip address to send the packet to (not used)
mr_q 0:d8f2f7d5f31b 584 * @return ERR_OK if the packet has been sent
mr_q 0:d8f2f7d5f31b 585 * ERR_MEM if the pbuf used to copy the packet couldn't be allocated
mr_q 0:d8f2f7d5f31b 586 */
mr_q 0:d8f2f7d5f31b 587 err_t
mr_q 0:d8f2f7d5f31b 588 netif_loop_output(struct netif *netif, struct pbuf *p,
mr_q 0:d8f2f7d5f31b 589 ip_addr_t *ipaddr)
mr_q 0:d8f2f7d5f31b 590 {
mr_q 0:d8f2f7d5f31b 591 struct pbuf *r;
mr_q 0:d8f2f7d5f31b 592 err_t err;
mr_q 0:d8f2f7d5f31b 593 struct pbuf *last;
mr_q 0:d8f2f7d5f31b 594 #if LWIP_LOOPBACK_MAX_PBUFS
mr_q 0:d8f2f7d5f31b 595 u8_t clen = 0;
mr_q 0:d8f2f7d5f31b 596 #endif /* LWIP_LOOPBACK_MAX_PBUFS */
mr_q 0:d8f2f7d5f31b 597 /* If we have a loopif, SNMP counters are adjusted for it,
mr_q 0:d8f2f7d5f31b 598 * if not they are adjusted for 'netif'. */
mr_q 0:d8f2f7d5f31b 599 #if LWIP_SNMP
mr_q 0:d8f2f7d5f31b 600 #if LWIP_HAVE_LOOPIF
mr_q 0:d8f2f7d5f31b 601 struct netif *stats_if = &loop_netif;
mr_q 0:d8f2f7d5f31b 602 #else /* LWIP_HAVE_LOOPIF */
mr_q 0:d8f2f7d5f31b 603 struct netif *stats_if = netif;
mr_q 0:d8f2f7d5f31b 604 #endif /* LWIP_HAVE_LOOPIF */
mr_q 0:d8f2f7d5f31b 605 #endif /* LWIP_SNMP */
mr_q 0:d8f2f7d5f31b 606 SYS_ARCH_DECL_PROTECT(lev);
mr_q 0:d8f2f7d5f31b 607 LWIP_UNUSED_ARG(ipaddr);
mr_q 0:d8f2f7d5f31b 608
mr_q 0:d8f2f7d5f31b 609 /* Allocate a new pbuf */
mr_q 0:d8f2f7d5f31b 610 r = pbuf_alloc(PBUF_LINK, p->tot_len, PBUF_RAM);
mr_q 0:d8f2f7d5f31b 611 if (r == NULL) {
mr_q 0:d8f2f7d5f31b 612 LINK_STATS_INC(link.memerr);
mr_q 0:d8f2f7d5f31b 613 LINK_STATS_INC(link.drop);
mr_q 0:d8f2f7d5f31b 614 snmp_inc_ifoutdiscards(stats_if);
mr_q 0:d8f2f7d5f31b 615 return ERR_MEM;
mr_q 0:d8f2f7d5f31b 616 }
mr_q 0:d8f2f7d5f31b 617 #if LWIP_LOOPBACK_MAX_PBUFS
mr_q 0:d8f2f7d5f31b 618 clen = pbuf_clen(r);
mr_q 0:d8f2f7d5f31b 619 /* check for overflow or too many pbuf on queue */
mr_q 0:d8f2f7d5f31b 620 if(((netif->loop_cnt_current + clen) < netif->loop_cnt_current) ||
mr_q 0:d8f2f7d5f31b 621 ((netif->loop_cnt_current + clen) > LWIP_LOOPBACK_MAX_PBUFS)) {
mr_q 0:d8f2f7d5f31b 622 pbuf_free(r);
mr_q 0:d8f2f7d5f31b 623 LINK_STATS_INC(link.memerr);
mr_q 0:d8f2f7d5f31b 624 LINK_STATS_INC(link.drop);
mr_q 0:d8f2f7d5f31b 625 snmp_inc_ifoutdiscards(stats_if);
mr_q 0:d8f2f7d5f31b 626 return ERR_MEM;
mr_q 0:d8f2f7d5f31b 627 }
mr_q 0:d8f2f7d5f31b 628 netif->loop_cnt_current += clen;
mr_q 0:d8f2f7d5f31b 629 #endif /* LWIP_LOOPBACK_MAX_PBUFS */
mr_q 0:d8f2f7d5f31b 630
mr_q 0:d8f2f7d5f31b 631 /* Copy the whole pbuf queue p into the single pbuf r */
mr_q 0:d8f2f7d5f31b 632 if ((err = pbuf_copy(r, p)) != ERR_OK) {
mr_q 0:d8f2f7d5f31b 633 pbuf_free(r);
mr_q 0:d8f2f7d5f31b 634 LINK_STATS_INC(link.memerr);
mr_q 0:d8f2f7d5f31b 635 LINK_STATS_INC(link.drop);
mr_q 0:d8f2f7d5f31b 636 snmp_inc_ifoutdiscards(stats_if);
mr_q 0:d8f2f7d5f31b 637 return err;
mr_q 0:d8f2f7d5f31b 638 }
mr_q 0:d8f2f7d5f31b 639
mr_q 0:d8f2f7d5f31b 640 /* Put the packet on a linked list which gets emptied through calling
mr_q 0:d8f2f7d5f31b 641 netif_poll(). */
mr_q 0:d8f2f7d5f31b 642
mr_q 0:d8f2f7d5f31b 643 /* let last point to the last pbuf in chain r */
mr_q 0:d8f2f7d5f31b 644 for (last = r; last->next != NULL; last = last->next);
mr_q 0:d8f2f7d5f31b 645
mr_q 0:d8f2f7d5f31b 646 SYS_ARCH_PROTECT(lev);
mr_q 0:d8f2f7d5f31b 647 if(netif->loop_first != NULL) {
mr_q 0:d8f2f7d5f31b 648 LWIP_ASSERT("if first != NULL, last must also be != NULL", netif->loop_last != NULL);
mr_q 0:d8f2f7d5f31b 649 netif->loop_last->next = r;
mr_q 0:d8f2f7d5f31b 650 netif->loop_last = last;
mr_q 0:d8f2f7d5f31b 651 } else {
mr_q 0:d8f2f7d5f31b 652 netif->loop_first = r;
mr_q 0:d8f2f7d5f31b 653 netif->loop_last = last;
mr_q 0:d8f2f7d5f31b 654 }
mr_q 0:d8f2f7d5f31b 655 SYS_ARCH_UNPROTECT(lev);
mr_q 0:d8f2f7d5f31b 656
mr_q 0:d8f2f7d5f31b 657 LINK_STATS_INC(link.xmit);
mr_q 0:d8f2f7d5f31b 658 snmp_add_ifoutoctets(stats_if, p->tot_len);
mr_q 0:d8f2f7d5f31b 659 snmp_inc_ifoutucastpkts(stats_if);
mr_q 0:d8f2f7d5f31b 660
mr_q 0:d8f2f7d5f31b 661 #if LWIP_NETIF_LOOPBACK_MULTITHREADING
mr_q 0:d8f2f7d5f31b 662 /* For multithreading environment, schedule a call to netif_poll */
mr_q 0:d8f2f7d5f31b 663 tcpip_callback((tcpip_callback_fn)netif_poll, netif);
mr_q 0:d8f2f7d5f31b 664 #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */
mr_q 0:d8f2f7d5f31b 665
mr_q 0:d8f2f7d5f31b 666 return ERR_OK;
mr_q 0:d8f2f7d5f31b 667 }
mr_q 0:d8f2f7d5f31b 668
mr_q 0:d8f2f7d5f31b 669 /**
mr_q 0:d8f2f7d5f31b 670 * Call netif_poll() in the main loop of your application. This is to prevent
mr_q 0:d8f2f7d5f31b 671 * reentering non-reentrant functions like tcp_input(). Packets passed to
mr_q 0:d8f2f7d5f31b 672 * netif_loop_output() are put on a list that is passed to netif->input() by
mr_q 0:d8f2f7d5f31b 673 * netif_poll().
mr_q 0:d8f2f7d5f31b 674 */
mr_q 0:d8f2f7d5f31b 675 void
mr_q 0:d8f2f7d5f31b 676 netif_poll(struct netif *netif)
mr_q 0:d8f2f7d5f31b 677 {
mr_q 0:d8f2f7d5f31b 678 struct pbuf *in;
mr_q 0:d8f2f7d5f31b 679 /* If we have a loopif, SNMP counters are adjusted for it,
mr_q 0:d8f2f7d5f31b 680 * if not they are adjusted for 'netif'. */
mr_q 0:d8f2f7d5f31b 681 #if LWIP_SNMP
mr_q 0:d8f2f7d5f31b 682 #if LWIP_HAVE_LOOPIF
mr_q 0:d8f2f7d5f31b 683 struct netif *stats_if = &loop_netif;
mr_q 0:d8f2f7d5f31b 684 #else /* LWIP_HAVE_LOOPIF */
mr_q 0:d8f2f7d5f31b 685 struct netif *stats_if = netif;
mr_q 0:d8f2f7d5f31b 686 #endif /* LWIP_HAVE_LOOPIF */
mr_q 0:d8f2f7d5f31b 687 #endif /* LWIP_SNMP */
mr_q 0:d8f2f7d5f31b 688 SYS_ARCH_DECL_PROTECT(lev);
mr_q 0:d8f2f7d5f31b 689
mr_q 0:d8f2f7d5f31b 690 do {
mr_q 0:d8f2f7d5f31b 691 /* Get a packet from the list. With SYS_LIGHTWEIGHT_PROT=1, this is protected */
mr_q 0:d8f2f7d5f31b 692 SYS_ARCH_PROTECT(lev);
mr_q 0:d8f2f7d5f31b 693 in = netif->loop_first;
mr_q 0:d8f2f7d5f31b 694 if (in != NULL) {
mr_q 0:d8f2f7d5f31b 695 struct pbuf *in_end = in;
mr_q 0:d8f2f7d5f31b 696 #if LWIP_LOOPBACK_MAX_PBUFS
mr_q 0:d8f2f7d5f31b 697 u8_t clen = pbuf_clen(in);
mr_q 0:d8f2f7d5f31b 698 /* adjust the number of pbufs on queue */
mr_q 0:d8f2f7d5f31b 699 LWIP_ASSERT("netif->loop_cnt_current underflow",
mr_q 0:d8f2f7d5f31b 700 ((netif->loop_cnt_current - clen) < netif->loop_cnt_current));
mr_q 0:d8f2f7d5f31b 701 netif->loop_cnt_current -= clen;
mr_q 0:d8f2f7d5f31b 702 #endif /* LWIP_LOOPBACK_MAX_PBUFS */
mr_q 0:d8f2f7d5f31b 703 while (in_end->len != in_end->tot_len) {
mr_q 0:d8f2f7d5f31b 704 LWIP_ASSERT("bogus pbuf: len != tot_len but next == NULL!", in_end->next != NULL);
mr_q 0:d8f2f7d5f31b 705 in_end = in_end->next;
mr_q 0:d8f2f7d5f31b 706 }
mr_q 0:d8f2f7d5f31b 707 /* 'in_end' now points to the last pbuf from 'in' */
mr_q 0:d8f2f7d5f31b 708 if (in_end == netif->loop_last) {
mr_q 0:d8f2f7d5f31b 709 /* this was the last pbuf in the list */
mr_q 0:d8f2f7d5f31b 710 netif->loop_first = netif->loop_last = NULL;
mr_q 0:d8f2f7d5f31b 711 } else {
mr_q 0:d8f2f7d5f31b 712 /* pop the pbuf off the list */
mr_q 0:d8f2f7d5f31b 713 netif->loop_first = in_end->next;
mr_q 0:d8f2f7d5f31b 714 LWIP_ASSERT("should not be null since first != last!", netif->loop_first != NULL);
mr_q 0:d8f2f7d5f31b 715 }
mr_q 0:d8f2f7d5f31b 716 /* De-queue the pbuf from its successors on the 'loop_' list. */
mr_q 0:d8f2f7d5f31b 717 in_end->next = NULL;
mr_q 0:d8f2f7d5f31b 718 }
mr_q 0:d8f2f7d5f31b 719 SYS_ARCH_UNPROTECT(lev);
mr_q 0:d8f2f7d5f31b 720
mr_q 0:d8f2f7d5f31b 721 if (in != NULL) {
mr_q 0:d8f2f7d5f31b 722 LINK_STATS_INC(link.recv);
mr_q 0:d8f2f7d5f31b 723 snmp_add_ifinoctets(stats_if, in->tot_len);
mr_q 0:d8f2f7d5f31b 724 snmp_inc_ifinucastpkts(stats_if);
mr_q 0:d8f2f7d5f31b 725 /* loopback packets are always IP packets! */
mr_q 0:d8f2f7d5f31b 726 if (ip_input(in, netif) != ERR_OK) {
mr_q 0:d8f2f7d5f31b 727 pbuf_free(in);
mr_q 0:d8f2f7d5f31b 728 }
mr_q 0:d8f2f7d5f31b 729 /* Don't reference the packet any more! */
mr_q 0:d8f2f7d5f31b 730 in = NULL;
mr_q 0:d8f2f7d5f31b 731 }
mr_q 0:d8f2f7d5f31b 732 /* go on while there is a packet on the list */
mr_q 0:d8f2f7d5f31b 733 } while (netif->loop_first != NULL);
mr_q 0:d8f2f7d5f31b 734 }
mr_q 0:d8f2f7d5f31b 735
mr_q 0:d8f2f7d5f31b 736 #if !LWIP_NETIF_LOOPBACK_MULTITHREADING
mr_q 0:d8f2f7d5f31b 737 /**
mr_q 0:d8f2f7d5f31b 738 * Calls netif_poll() for every netif on the netif_list.
mr_q 0:d8f2f7d5f31b 739 */
mr_q 0:d8f2f7d5f31b 740 void
mr_q 0:d8f2f7d5f31b 741 netif_poll_all(void)
mr_q 0:d8f2f7d5f31b 742 {
mr_q 0:d8f2f7d5f31b 743 struct netif *netif = netif_list;
mr_q 0:d8f2f7d5f31b 744 /* loop through netifs */
mr_q 0:d8f2f7d5f31b 745 while (netif != NULL) {
mr_q 0:d8f2f7d5f31b 746 netif_poll(netif);
mr_q 0:d8f2f7d5f31b 747 /* proceed to next network interface */
mr_q 0:d8f2f7d5f31b 748 netif = netif->next;
mr_q 0:d8f2f7d5f31b 749 }
mr_q 0:d8f2f7d5f31b 750 }
mr_q 0:d8f2f7d5f31b 751 #endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */
mr_q 0:d8f2f7d5f31b 752 #endif /* ENABLE_LOOPBACK */