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lwip/core/netif.c@0:d7bd7384a37c, 2016-12-07 (annotated)
- Committer:
- grzemich
- Date:
- Wed Dec 07 23:47:50 2016 +0000
- Revision:
- 0:d7bd7384a37c
dgd
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
grzemich | 0:d7bd7384a37c | 1 | /** |
grzemich | 0:d7bd7384a37c | 2 | * @file |
grzemich | 0:d7bd7384a37c | 3 | * lwIP network interface abstraction |
grzemich | 0:d7bd7384a37c | 4 | * |
grzemich | 0:d7bd7384a37c | 5 | */ |
grzemich | 0:d7bd7384a37c | 6 | |
grzemich | 0:d7bd7384a37c | 7 | /* |
grzemich | 0:d7bd7384a37c | 8 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science. |
grzemich | 0:d7bd7384a37c | 9 | * All rights reserved. |
grzemich | 0:d7bd7384a37c | 10 | * |
grzemich | 0:d7bd7384a37c | 11 | * Redistribution and use in source and binary forms, with or without modification, |
grzemich | 0:d7bd7384a37c | 12 | * are permitted provided that the following conditions are met: |
grzemich | 0:d7bd7384a37c | 13 | * |
grzemich | 0:d7bd7384a37c | 14 | * 1. Redistributions of source code must retain the above copyright notice, |
grzemich | 0:d7bd7384a37c | 15 | * this list of conditions and the following disclaimer. |
grzemich | 0:d7bd7384a37c | 16 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
grzemich | 0:d7bd7384a37c | 17 | * this list of conditions and the following disclaimer in the documentation |
grzemich | 0:d7bd7384a37c | 18 | * and/or other materials provided with the distribution. |
grzemich | 0:d7bd7384a37c | 19 | * 3. The name of the author may not be used to endorse or promote products |
grzemich | 0:d7bd7384a37c | 20 | * derived from this software without specific prior written permission. |
grzemich | 0:d7bd7384a37c | 21 | * |
grzemich | 0:d7bd7384a37c | 22 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
grzemich | 0:d7bd7384a37c | 23 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
grzemich | 0:d7bd7384a37c | 24 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
grzemich | 0:d7bd7384a37c | 25 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
grzemich | 0:d7bd7384a37c | 26 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
grzemich | 0:d7bd7384a37c | 27 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
grzemich | 0:d7bd7384a37c | 28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
grzemich | 0:d7bd7384a37c | 29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
grzemich | 0:d7bd7384a37c | 30 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
grzemich | 0:d7bd7384a37c | 31 | * OF SUCH DAMAGE. |
grzemich | 0:d7bd7384a37c | 32 | * |
grzemich | 0:d7bd7384a37c | 33 | * This file is part of the lwIP TCP/IP stack. |
grzemich | 0:d7bd7384a37c | 34 | * |
grzemich | 0:d7bd7384a37c | 35 | * Author: Adam Dunkels <adam@sics.se> |
grzemich | 0:d7bd7384a37c | 36 | * |
grzemich | 0:d7bd7384a37c | 37 | */ |
grzemich | 0:d7bd7384a37c | 38 | |
grzemich | 0:d7bd7384a37c | 39 | #include "lwip/opt.h" |
grzemich | 0:d7bd7384a37c | 40 | |
grzemich | 0:d7bd7384a37c | 41 | #include "lwip/def.h" |
grzemich | 0:d7bd7384a37c | 42 | #include "lwip/ip_addr.h" |
grzemich | 0:d7bd7384a37c | 43 | #include "lwip/netif.h" |
grzemich | 0:d7bd7384a37c | 44 | #include "lwip/tcp_impl.h" |
grzemich | 0:d7bd7384a37c | 45 | #include "lwip/snmp.h" |
grzemich | 0:d7bd7384a37c | 46 | #include "lwip/igmp.h" |
grzemich | 0:d7bd7384a37c | 47 | #include "netif/etharp.h" |
grzemich | 0:d7bd7384a37c | 48 | #include "lwip/stats.h" |
grzemich | 0:d7bd7384a37c | 49 | #if ENABLE_LOOPBACK |
grzemich | 0:d7bd7384a37c | 50 | #include "lwip/sys.h" |
grzemich | 0:d7bd7384a37c | 51 | #if LWIP_NETIF_LOOPBACK_MULTITHREADING |
grzemich | 0:d7bd7384a37c | 52 | #include "lwip/tcpip.h" |
grzemich | 0:d7bd7384a37c | 53 | #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */ |
grzemich | 0:d7bd7384a37c | 54 | #endif /* ENABLE_LOOPBACK */ |
grzemich | 0:d7bd7384a37c | 55 | |
grzemich | 0:d7bd7384a37c | 56 | #if LWIP_AUTOIP |
grzemich | 0:d7bd7384a37c | 57 | #include "lwip/autoip.h" |
grzemich | 0:d7bd7384a37c | 58 | #endif /* LWIP_AUTOIP */ |
grzemich | 0:d7bd7384a37c | 59 | #if LWIP_DHCP |
grzemich | 0:d7bd7384a37c | 60 | #include "lwip/dhcp.h" |
grzemich | 0:d7bd7384a37c | 61 | #endif /* LWIP_DHCP */ |
grzemich | 0:d7bd7384a37c | 62 | |
grzemich | 0:d7bd7384a37c | 63 | #if LWIP_NETIF_STATUS_CALLBACK |
grzemich | 0:d7bd7384a37c | 64 | #define NETIF_STATUS_CALLBACK(n) do{ if (n->status_callback) { (n->status_callback)(n); }}while(0) |
grzemich | 0:d7bd7384a37c | 65 | #else |
grzemich | 0:d7bd7384a37c | 66 | #define NETIF_STATUS_CALLBACK(n) |
grzemich | 0:d7bd7384a37c | 67 | #endif /* LWIP_NETIF_STATUS_CALLBACK */ |
grzemich | 0:d7bd7384a37c | 68 | |
grzemich | 0:d7bd7384a37c | 69 | #if LWIP_NETIF_LINK_CALLBACK |
grzemich | 0:d7bd7384a37c | 70 | #define NETIF_LINK_CALLBACK(n) do{ if (n->link_callback) { (n->link_callback)(n); }}while(0) |
grzemich | 0:d7bd7384a37c | 71 | #else |
grzemich | 0:d7bd7384a37c | 72 | #define NETIF_LINK_CALLBACK(n) |
grzemich | 0:d7bd7384a37c | 73 | #endif /* LWIP_NETIF_LINK_CALLBACK */ |
grzemich | 0:d7bd7384a37c | 74 | |
grzemich | 0:d7bd7384a37c | 75 | struct netif *netif_list; |
grzemich | 0:d7bd7384a37c | 76 | struct netif *netif_default; |
grzemich | 0:d7bd7384a37c | 77 | |
grzemich | 0:d7bd7384a37c | 78 | #if LWIP_HAVE_LOOPIF |
grzemich | 0:d7bd7384a37c | 79 | static struct netif loop_netif; |
grzemich | 0:d7bd7384a37c | 80 | |
grzemich | 0:d7bd7384a37c | 81 | /** |
grzemich | 0:d7bd7384a37c | 82 | * Initialize a lwip network interface structure for a loopback interface |
grzemich | 0:d7bd7384a37c | 83 | * |
grzemich | 0:d7bd7384a37c | 84 | * @param netif the lwip network interface structure for this loopif |
grzemich | 0:d7bd7384a37c | 85 | * @return ERR_OK if the loopif is initialized |
grzemich | 0:d7bd7384a37c | 86 | * ERR_MEM if private data couldn't be allocated |
grzemich | 0:d7bd7384a37c | 87 | */ |
grzemich | 0:d7bd7384a37c | 88 | static err_t |
grzemich | 0:d7bd7384a37c | 89 | netif_loopif_init(struct netif *netif) |
grzemich | 0:d7bd7384a37c | 90 | { |
grzemich | 0:d7bd7384a37c | 91 | /* initialize the snmp variables and counters inside the struct netif |
grzemich | 0:d7bd7384a37c | 92 | * ifSpeed: no assumption can be made! |
grzemich | 0:d7bd7384a37c | 93 | */ |
grzemich | 0:d7bd7384a37c | 94 | NETIF_INIT_SNMP(netif, snmp_ifType_softwareLoopback, 0); |
grzemich | 0:d7bd7384a37c | 95 | |
grzemich | 0:d7bd7384a37c | 96 | netif->name[0] = 'l'; |
grzemich | 0:d7bd7384a37c | 97 | netif->name[1] = 'o'; |
grzemich | 0:d7bd7384a37c | 98 | netif->output = netif_loop_output; |
grzemich | 0:d7bd7384a37c | 99 | return ERR_OK; |
grzemich | 0:d7bd7384a37c | 100 | } |
grzemich | 0:d7bd7384a37c | 101 | #endif /* LWIP_HAVE_LOOPIF */ |
grzemich | 0:d7bd7384a37c | 102 | |
grzemich | 0:d7bd7384a37c | 103 | void |
grzemich | 0:d7bd7384a37c | 104 | netif_init(void) |
grzemich | 0:d7bd7384a37c | 105 | { |
grzemich | 0:d7bd7384a37c | 106 | #if LWIP_HAVE_LOOPIF |
grzemich | 0:d7bd7384a37c | 107 | ip_addr_t loop_ipaddr, loop_netmask, loop_gw; |
grzemich | 0:d7bd7384a37c | 108 | IP4_ADDR(&loop_gw, 127,0,0,1); |
grzemich | 0:d7bd7384a37c | 109 | IP4_ADDR(&loop_ipaddr, 127,0,0,1); |
grzemich | 0:d7bd7384a37c | 110 | IP4_ADDR(&loop_netmask, 255,0,0,0); |
grzemich | 0:d7bd7384a37c | 111 | |
grzemich | 0:d7bd7384a37c | 112 | #if NO_SYS |
grzemich | 0:d7bd7384a37c | 113 | netif_add(&loop_netif, &loop_ipaddr, &loop_netmask, &loop_gw, NULL, netif_loopif_init, ip_input); |
grzemich | 0:d7bd7384a37c | 114 | #else /* NO_SYS */ |
grzemich | 0:d7bd7384a37c | 115 | netif_add(&loop_netif, &loop_ipaddr, &loop_netmask, &loop_gw, NULL, netif_loopif_init, tcpip_input); |
grzemich | 0:d7bd7384a37c | 116 | #endif /* NO_SYS */ |
grzemich | 0:d7bd7384a37c | 117 | netif_set_up(&loop_netif); |
grzemich | 0:d7bd7384a37c | 118 | |
grzemich | 0:d7bd7384a37c | 119 | #endif /* LWIP_HAVE_LOOPIF */ |
grzemich | 0:d7bd7384a37c | 120 | } |
grzemich | 0:d7bd7384a37c | 121 | |
grzemich | 0:d7bd7384a37c | 122 | /** |
grzemich | 0:d7bd7384a37c | 123 | * Add a network interface to the list of lwIP netifs. |
grzemich | 0:d7bd7384a37c | 124 | * |
grzemich | 0:d7bd7384a37c | 125 | * @param netif a pre-allocated netif structure |
grzemich | 0:d7bd7384a37c | 126 | * @param ipaddr IP address for the new netif |
grzemich | 0:d7bd7384a37c | 127 | * @param netmask network mask for the new netif |
grzemich | 0:d7bd7384a37c | 128 | * @param gw default gateway IP address for the new netif |
grzemich | 0:d7bd7384a37c | 129 | * @param state opaque data passed to the new netif |
grzemich | 0:d7bd7384a37c | 130 | * @param init callback function that initializes the interface |
grzemich | 0:d7bd7384a37c | 131 | * @param input callback function that is called to pass |
grzemich | 0:d7bd7384a37c | 132 | * ingress packets up in the protocol layer stack. |
grzemich | 0:d7bd7384a37c | 133 | * |
grzemich | 0:d7bd7384a37c | 134 | * @return netif, or NULL if failed. |
grzemich | 0:d7bd7384a37c | 135 | */ |
grzemich | 0:d7bd7384a37c | 136 | struct netif * |
grzemich | 0:d7bd7384a37c | 137 | netif_add(struct netif *netif, ip_addr_t *ipaddr, ip_addr_t *netmask, |
grzemich | 0:d7bd7384a37c | 138 | ip_addr_t *gw, void *state, netif_init_fn init, netif_input_fn input) |
grzemich | 0:d7bd7384a37c | 139 | { |
grzemich | 0:d7bd7384a37c | 140 | static u8_t netifnum = 0; |
grzemich | 0:d7bd7384a37c | 141 | |
grzemich | 0:d7bd7384a37c | 142 | LWIP_ASSERT("No init function given", init != NULL); |
grzemich | 0:d7bd7384a37c | 143 | |
grzemich | 0:d7bd7384a37c | 144 | /* reset new interface configuration state */ |
grzemich | 0:d7bd7384a37c | 145 | ip_addr_set_zero(&netif->ip_addr); |
grzemich | 0:d7bd7384a37c | 146 | ip_addr_set_zero(&netif->netmask); |
grzemich | 0:d7bd7384a37c | 147 | ip_addr_set_zero(&netif->gw); |
grzemich | 0:d7bd7384a37c | 148 | netif->flags = 0; |
grzemich | 0:d7bd7384a37c | 149 | #if LWIP_DHCP |
grzemich | 0:d7bd7384a37c | 150 | /* netif not under DHCP control by default */ |
grzemich | 0:d7bd7384a37c | 151 | netif->dhcp = NULL; |
grzemich | 0:d7bd7384a37c | 152 | #endif /* LWIP_DHCP */ |
grzemich | 0:d7bd7384a37c | 153 | #if LWIP_AUTOIP |
grzemich | 0:d7bd7384a37c | 154 | /* netif not under AutoIP control by default */ |
grzemich | 0:d7bd7384a37c | 155 | netif->autoip = NULL; |
grzemich | 0:d7bd7384a37c | 156 | #endif /* LWIP_AUTOIP */ |
grzemich | 0:d7bd7384a37c | 157 | #if LWIP_NETIF_STATUS_CALLBACK |
grzemich | 0:d7bd7384a37c | 158 | netif->status_callback = NULL; |
grzemich | 0:d7bd7384a37c | 159 | #endif /* LWIP_NETIF_STATUS_CALLBACK */ |
grzemich | 0:d7bd7384a37c | 160 | #if LWIP_NETIF_LINK_CALLBACK |
grzemich | 0:d7bd7384a37c | 161 | netif->link_callback = NULL; |
grzemich | 0:d7bd7384a37c | 162 | #endif /* LWIP_NETIF_LINK_CALLBACK */ |
grzemich | 0:d7bd7384a37c | 163 | #if LWIP_IGMP |
grzemich | 0:d7bd7384a37c | 164 | netif->igmp_mac_filter = NULL; |
grzemich | 0:d7bd7384a37c | 165 | #endif /* LWIP_IGMP */ |
grzemich | 0:d7bd7384a37c | 166 | #if ENABLE_LOOPBACK |
grzemich | 0:d7bd7384a37c | 167 | netif->loop_first = NULL; |
grzemich | 0:d7bd7384a37c | 168 | netif->loop_last = NULL; |
grzemich | 0:d7bd7384a37c | 169 | #endif /* ENABLE_LOOPBACK */ |
grzemich | 0:d7bd7384a37c | 170 | |
grzemich | 0:d7bd7384a37c | 171 | /* remember netif specific state information data */ |
grzemich | 0:d7bd7384a37c | 172 | netif->state = state; |
grzemich | 0:d7bd7384a37c | 173 | netif->num = netifnum++; |
grzemich | 0:d7bd7384a37c | 174 | netif->input = input; |
grzemich | 0:d7bd7384a37c | 175 | #if LWIP_NETIF_HWADDRHINT |
grzemich | 0:d7bd7384a37c | 176 | netif->addr_hint = NULL; |
grzemich | 0:d7bd7384a37c | 177 | #endif /* LWIP_NETIF_HWADDRHINT*/ |
grzemich | 0:d7bd7384a37c | 178 | #if ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS |
grzemich | 0:d7bd7384a37c | 179 | netif->loop_cnt_current = 0; |
grzemich | 0:d7bd7384a37c | 180 | #endif /* ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS */ |
grzemich | 0:d7bd7384a37c | 181 | |
grzemich | 0:d7bd7384a37c | 182 | netif_set_addr(netif, ipaddr, netmask, gw); |
grzemich | 0:d7bd7384a37c | 183 | |
grzemich | 0:d7bd7384a37c | 184 | /* call user specified initialization function for netif */ |
grzemich | 0:d7bd7384a37c | 185 | if (init(netif) != ERR_OK) { |
grzemich | 0:d7bd7384a37c | 186 | return NULL; |
grzemich | 0:d7bd7384a37c | 187 | } |
grzemich | 0:d7bd7384a37c | 188 | |
grzemich | 0:d7bd7384a37c | 189 | /* add this netif to the list */ |
grzemich | 0:d7bd7384a37c | 190 | netif->next = netif_list; |
grzemich | 0:d7bd7384a37c | 191 | netif_list = netif; |
grzemich | 0:d7bd7384a37c | 192 | snmp_inc_iflist(); |
grzemich | 0:d7bd7384a37c | 193 | |
grzemich | 0:d7bd7384a37c | 194 | #if LWIP_IGMP |
grzemich | 0:d7bd7384a37c | 195 | /* start IGMP processing */ |
grzemich | 0:d7bd7384a37c | 196 | if (netif->flags & NETIF_FLAG_IGMP) { |
grzemich | 0:d7bd7384a37c | 197 | igmp_start(netif); |
grzemich | 0:d7bd7384a37c | 198 | } |
grzemich | 0:d7bd7384a37c | 199 | #endif /* LWIP_IGMP */ |
grzemich | 0:d7bd7384a37c | 200 | |
grzemich | 0:d7bd7384a37c | 201 | LWIP_DEBUGF(NETIF_DEBUG, ("netif: added interface %c%c IP addr ", |
grzemich | 0:d7bd7384a37c | 202 | netif->name[0], netif->name[1])); |
grzemich | 0:d7bd7384a37c | 203 | ip_addr_debug_print(NETIF_DEBUG, ipaddr); |
grzemich | 0:d7bd7384a37c | 204 | LWIP_DEBUGF(NETIF_DEBUG, (" netmask ")); |
grzemich | 0:d7bd7384a37c | 205 | ip_addr_debug_print(NETIF_DEBUG, netmask); |
grzemich | 0:d7bd7384a37c | 206 | LWIP_DEBUGF(NETIF_DEBUG, (" gw ")); |
grzemich | 0:d7bd7384a37c | 207 | ip_addr_debug_print(NETIF_DEBUG, gw); |
grzemich | 0:d7bd7384a37c | 208 | LWIP_DEBUGF(NETIF_DEBUG, ("\n")); |
grzemich | 0:d7bd7384a37c | 209 | return netif; |
grzemich | 0:d7bd7384a37c | 210 | } |
grzemich | 0:d7bd7384a37c | 211 | |
grzemich | 0:d7bd7384a37c | 212 | /** |
grzemich | 0:d7bd7384a37c | 213 | * Change IP address configuration for a network interface (including netmask |
grzemich | 0:d7bd7384a37c | 214 | * and default gateway). |
grzemich | 0:d7bd7384a37c | 215 | * |
grzemich | 0:d7bd7384a37c | 216 | * @param netif the network interface to change |
grzemich | 0:d7bd7384a37c | 217 | * @param ipaddr the new IP address |
grzemich | 0:d7bd7384a37c | 218 | * @param netmask the new netmask |
grzemich | 0:d7bd7384a37c | 219 | * @param gw the new default gateway |
grzemich | 0:d7bd7384a37c | 220 | */ |
grzemich | 0:d7bd7384a37c | 221 | void |
grzemich | 0:d7bd7384a37c | 222 | netif_set_addr(struct netif *netif, ip_addr_t *ipaddr, ip_addr_t *netmask, |
grzemich | 0:d7bd7384a37c | 223 | ip_addr_t *gw) |
grzemich | 0:d7bd7384a37c | 224 | { |
grzemich | 0:d7bd7384a37c | 225 | netif_set_ipaddr(netif, ipaddr); |
grzemich | 0:d7bd7384a37c | 226 | netif_set_netmask(netif, netmask); |
grzemich | 0:d7bd7384a37c | 227 | netif_set_gw(netif, gw); |
grzemich | 0:d7bd7384a37c | 228 | } |
grzemich | 0:d7bd7384a37c | 229 | |
grzemich | 0:d7bd7384a37c | 230 | /** |
grzemich | 0:d7bd7384a37c | 231 | * Remove a network interface from the list of lwIP netifs. |
grzemich | 0:d7bd7384a37c | 232 | * |
grzemich | 0:d7bd7384a37c | 233 | * @param netif the network interface to remove |
grzemich | 0:d7bd7384a37c | 234 | */ |
grzemich | 0:d7bd7384a37c | 235 | void |
grzemich | 0:d7bd7384a37c | 236 | netif_remove(struct netif *netif) |
grzemich | 0:d7bd7384a37c | 237 | { |
grzemich | 0:d7bd7384a37c | 238 | if (netif == NULL) { |
grzemich | 0:d7bd7384a37c | 239 | return; |
grzemich | 0:d7bd7384a37c | 240 | } |
grzemich | 0:d7bd7384a37c | 241 | |
grzemich | 0:d7bd7384a37c | 242 | #if LWIP_IGMP |
grzemich | 0:d7bd7384a37c | 243 | /* stop IGMP processing */ |
grzemich | 0:d7bd7384a37c | 244 | if (netif->flags & NETIF_FLAG_IGMP) { |
grzemich | 0:d7bd7384a37c | 245 | igmp_stop(netif); |
grzemich | 0:d7bd7384a37c | 246 | } |
grzemich | 0:d7bd7384a37c | 247 | #endif /* LWIP_IGMP */ |
grzemich | 0:d7bd7384a37c | 248 | if (netif_is_up(netif)) { |
grzemich | 0:d7bd7384a37c | 249 | /* set netif down before removing (call callback function) */ |
grzemich | 0:d7bd7384a37c | 250 | netif_set_down(netif); |
grzemich | 0:d7bd7384a37c | 251 | } |
grzemich | 0:d7bd7384a37c | 252 | |
grzemich | 0:d7bd7384a37c | 253 | snmp_delete_ipaddridx_tree(netif); |
grzemich | 0:d7bd7384a37c | 254 | |
grzemich | 0:d7bd7384a37c | 255 | /* is it the first netif? */ |
grzemich | 0:d7bd7384a37c | 256 | if (netif_list == netif) { |
grzemich | 0:d7bd7384a37c | 257 | netif_list = netif->next; |
grzemich | 0:d7bd7384a37c | 258 | } else { |
grzemich | 0:d7bd7384a37c | 259 | /* look for netif further down the list */ |
grzemich | 0:d7bd7384a37c | 260 | struct netif * tmpNetif; |
grzemich | 0:d7bd7384a37c | 261 | for (tmpNetif = netif_list; tmpNetif != NULL; tmpNetif = tmpNetif->next) { |
grzemich | 0:d7bd7384a37c | 262 | if (tmpNetif->next == netif) { |
grzemich | 0:d7bd7384a37c | 263 | tmpNetif->next = netif->next; |
grzemich | 0:d7bd7384a37c | 264 | break; |
grzemich | 0:d7bd7384a37c | 265 | } |
grzemich | 0:d7bd7384a37c | 266 | } |
grzemich | 0:d7bd7384a37c | 267 | if (tmpNetif == NULL) |
grzemich | 0:d7bd7384a37c | 268 | return; /* we didn't find any netif today */ |
grzemich | 0:d7bd7384a37c | 269 | } |
grzemich | 0:d7bd7384a37c | 270 | snmp_dec_iflist(); |
grzemich | 0:d7bd7384a37c | 271 | /* this netif is default? */ |
grzemich | 0:d7bd7384a37c | 272 | if (netif_default == netif) { |
grzemich | 0:d7bd7384a37c | 273 | /* reset default netif */ |
grzemich | 0:d7bd7384a37c | 274 | netif_set_default(NULL); |
grzemich | 0:d7bd7384a37c | 275 | } |
grzemich | 0:d7bd7384a37c | 276 | LWIP_DEBUGF( NETIF_DEBUG, ("netif_remove: removed netif\n") ); |
grzemich | 0:d7bd7384a37c | 277 | } |
grzemich | 0:d7bd7384a37c | 278 | |
grzemich | 0:d7bd7384a37c | 279 | /** |
grzemich | 0:d7bd7384a37c | 280 | * Find a network interface by searching for its name |
grzemich | 0:d7bd7384a37c | 281 | * |
grzemich | 0:d7bd7384a37c | 282 | * @param name the name of the netif (like netif->name) plus concatenated number |
grzemich | 0:d7bd7384a37c | 283 | * in ascii representation (e.g. 'en0') |
grzemich | 0:d7bd7384a37c | 284 | */ |
grzemich | 0:d7bd7384a37c | 285 | struct netif * |
grzemich | 0:d7bd7384a37c | 286 | netif_find(char *name) |
grzemich | 0:d7bd7384a37c | 287 | { |
grzemich | 0:d7bd7384a37c | 288 | struct netif *netif; |
grzemich | 0:d7bd7384a37c | 289 | u8_t num; |
grzemich | 0:d7bd7384a37c | 290 | |
grzemich | 0:d7bd7384a37c | 291 | if (name == NULL) { |
grzemich | 0:d7bd7384a37c | 292 | return NULL; |
grzemich | 0:d7bd7384a37c | 293 | } |
grzemich | 0:d7bd7384a37c | 294 | |
grzemich | 0:d7bd7384a37c | 295 | num = name[2] - '0'; |
grzemich | 0:d7bd7384a37c | 296 | |
grzemich | 0:d7bd7384a37c | 297 | for(netif = netif_list; netif != NULL; netif = netif->next) { |
grzemich | 0:d7bd7384a37c | 298 | if (num == netif->num && |
grzemich | 0:d7bd7384a37c | 299 | name[0] == netif->name[0] && |
grzemich | 0:d7bd7384a37c | 300 | name[1] == netif->name[1]) { |
grzemich | 0:d7bd7384a37c | 301 | LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: found %c%c\n", name[0], name[1])); |
grzemich | 0:d7bd7384a37c | 302 | return netif; |
grzemich | 0:d7bd7384a37c | 303 | } |
grzemich | 0:d7bd7384a37c | 304 | } |
grzemich | 0:d7bd7384a37c | 305 | LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: didn't find %c%c\n", name[0], name[1])); |
grzemich | 0:d7bd7384a37c | 306 | return NULL; |
grzemich | 0:d7bd7384a37c | 307 | } |
grzemich | 0:d7bd7384a37c | 308 | |
grzemich | 0:d7bd7384a37c | 309 | /** |
grzemich | 0:d7bd7384a37c | 310 | * Change the IP address of a network interface |
grzemich | 0:d7bd7384a37c | 311 | * |
grzemich | 0:d7bd7384a37c | 312 | * @param netif the network interface to change |
grzemich | 0:d7bd7384a37c | 313 | * @param ipaddr the new IP address |
grzemich | 0:d7bd7384a37c | 314 | * |
grzemich | 0:d7bd7384a37c | 315 | * @note call netif_set_addr() if you also want to change netmask and |
grzemich | 0:d7bd7384a37c | 316 | * default gateway |
grzemich | 0:d7bd7384a37c | 317 | */ |
grzemich | 0:d7bd7384a37c | 318 | void |
grzemich | 0:d7bd7384a37c | 319 | netif_set_ipaddr(struct netif *netif, ip_addr_t *ipaddr) |
grzemich | 0:d7bd7384a37c | 320 | { |
grzemich | 0:d7bd7384a37c | 321 | /* Protect against dereferencing NULL pointers by |
grzemich | 0:d7bd7384a37c | 322 | treating like ANY, as does ip_addr_set() */ |
grzemich | 0:d7bd7384a37c | 323 | if (!ipaddr) { |
grzemich | 0:d7bd7384a37c | 324 | ipaddr = IP_ADDR_ANY; |
grzemich | 0:d7bd7384a37c | 325 | } |
grzemich | 0:d7bd7384a37c | 326 | |
grzemich | 0:d7bd7384a37c | 327 | /* TODO: Handling of obsolete pcbs */ |
grzemich | 0:d7bd7384a37c | 328 | /* See: http://mail.gnu.org/archive/html/lwip-users/2003-03/msg00118.html */ |
grzemich | 0:d7bd7384a37c | 329 | #if LWIP_TCP |
grzemich | 0:d7bd7384a37c | 330 | struct tcp_pcb *pcb; |
grzemich | 0:d7bd7384a37c | 331 | struct tcp_pcb_listen *lpcb; |
grzemich | 0:d7bd7384a37c | 332 | |
grzemich | 0:d7bd7384a37c | 333 | /* address is actually being changed? */ |
grzemich | 0:d7bd7384a37c | 334 | if ((ip_addr_cmp(ipaddr, &(netif->ip_addr))) == 0) { |
grzemich | 0:d7bd7384a37c | 335 | /* extern struct tcp_pcb *tcp_active_pcbs; defined by tcp.h */ |
grzemich | 0:d7bd7384a37c | 336 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_set_ipaddr: netif address being changed\n")); |
grzemich | 0:d7bd7384a37c | 337 | pcb = tcp_active_pcbs; |
grzemich | 0:d7bd7384a37c | 338 | while (pcb != NULL) { |
grzemich | 0:d7bd7384a37c | 339 | /* PCB bound to current local interface address? */ |
grzemich | 0:d7bd7384a37c | 340 | if (ip_addr_cmp(&(pcb->local_ip), &(netif->ip_addr)) |
grzemich | 0:d7bd7384a37c | 341 | #if LWIP_AUTOIP |
grzemich | 0:d7bd7384a37c | 342 | /* connections to link-local addresses must persist (RFC3927 ch. 1.9) */ |
grzemich | 0:d7bd7384a37c | 343 | && !ip_addr_islinklocal(&(pcb->local_ip)) |
grzemich | 0:d7bd7384a37c | 344 | #endif /* LWIP_AUTOIP */ |
grzemich | 0:d7bd7384a37c | 345 | ) { |
grzemich | 0:d7bd7384a37c | 346 | /* this connection must be aborted */ |
grzemich | 0:d7bd7384a37c | 347 | struct tcp_pcb *next = pcb->next; |
grzemich | 0:d7bd7384a37c | 348 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_set_ipaddr: aborting TCP pcb %p\n", (void *)pcb)); |
grzemich | 0:d7bd7384a37c | 349 | tcp_abort(pcb); |
grzemich | 0:d7bd7384a37c | 350 | pcb = next; |
grzemich | 0:d7bd7384a37c | 351 | } else { |
grzemich | 0:d7bd7384a37c | 352 | pcb = pcb->next; |
grzemich | 0:d7bd7384a37c | 353 | } |
grzemich | 0:d7bd7384a37c | 354 | } |
grzemich | 0:d7bd7384a37c | 355 | for (lpcb = tcp_listen_pcbs.listen_pcbs; lpcb != NULL; lpcb = lpcb->next) { |
grzemich | 0:d7bd7384a37c | 356 | /* PCB bound to current local interface address? */ |
grzemich | 0:d7bd7384a37c | 357 | if ((!(ip_addr_isany(&(lpcb->local_ip)))) && |
grzemich | 0:d7bd7384a37c | 358 | (ip_addr_cmp(&(lpcb->local_ip), &(netif->ip_addr)))) { |
grzemich | 0:d7bd7384a37c | 359 | /* The PCB is listening to the old ipaddr and |
grzemich | 0:d7bd7384a37c | 360 | * is set to listen to the new one instead */ |
grzemich | 0:d7bd7384a37c | 361 | ip_addr_set(&(lpcb->local_ip), ipaddr); |
grzemich | 0:d7bd7384a37c | 362 | } |
grzemich | 0:d7bd7384a37c | 363 | } |
grzemich | 0:d7bd7384a37c | 364 | } |
grzemich | 0:d7bd7384a37c | 365 | #endif |
grzemich | 0:d7bd7384a37c | 366 | snmp_delete_ipaddridx_tree(netif); |
grzemich | 0:d7bd7384a37c | 367 | snmp_delete_iprteidx_tree(0,netif); |
grzemich | 0:d7bd7384a37c | 368 | /* set new IP address to netif */ |
grzemich | 0:d7bd7384a37c | 369 | ip_addr_set(&(netif->ip_addr), ipaddr); |
grzemich | 0:d7bd7384a37c | 370 | snmp_insert_ipaddridx_tree(netif); |
grzemich | 0:d7bd7384a37c | 371 | snmp_insert_iprteidx_tree(0,netif); |
grzemich | 0:d7bd7384a37c | 372 | |
grzemich | 0:d7bd7384a37c | 373 | 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", |
grzemich | 0:d7bd7384a37c | 374 | netif->name[0], netif->name[1], |
grzemich | 0:d7bd7384a37c | 375 | ip4_addr1_16(&netif->ip_addr), |
grzemich | 0:d7bd7384a37c | 376 | ip4_addr2_16(&netif->ip_addr), |
grzemich | 0:d7bd7384a37c | 377 | ip4_addr3_16(&netif->ip_addr), |
grzemich | 0:d7bd7384a37c | 378 | ip4_addr4_16(&netif->ip_addr))); |
grzemich | 0:d7bd7384a37c | 379 | } |
grzemich | 0:d7bd7384a37c | 380 | |
grzemich | 0:d7bd7384a37c | 381 | /** |
grzemich | 0:d7bd7384a37c | 382 | * Change the default gateway for a network interface |
grzemich | 0:d7bd7384a37c | 383 | * |
grzemich | 0:d7bd7384a37c | 384 | * @param netif the network interface to change |
grzemich | 0:d7bd7384a37c | 385 | * @param gw the new default gateway |
grzemich | 0:d7bd7384a37c | 386 | * |
grzemich | 0:d7bd7384a37c | 387 | * @note call netif_set_addr() if you also want to change ip address and netmask |
grzemich | 0:d7bd7384a37c | 388 | */ |
grzemich | 0:d7bd7384a37c | 389 | void |
grzemich | 0:d7bd7384a37c | 390 | netif_set_gw(struct netif *netif, ip_addr_t *gw) |
grzemich | 0:d7bd7384a37c | 391 | { |
grzemich | 0:d7bd7384a37c | 392 | ip_addr_set(&(netif->gw), gw); |
grzemich | 0:d7bd7384a37c | 393 | 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", |
grzemich | 0:d7bd7384a37c | 394 | netif->name[0], netif->name[1], |
grzemich | 0:d7bd7384a37c | 395 | ip4_addr1_16(&netif->gw), |
grzemich | 0:d7bd7384a37c | 396 | ip4_addr2_16(&netif->gw), |
grzemich | 0:d7bd7384a37c | 397 | ip4_addr3_16(&netif->gw), |
grzemich | 0:d7bd7384a37c | 398 | ip4_addr4_16(&netif->gw))); |
grzemich | 0:d7bd7384a37c | 399 | } |
grzemich | 0:d7bd7384a37c | 400 | |
grzemich | 0:d7bd7384a37c | 401 | /** |
grzemich | 0:d7bd7384a37c | 402 | * Change the netmask of a network interface |
grzemich | 0:d7bd7384a37c | 403 | * |
grzemich | 0:d7bd7384a37c | 404 | * @param netif the network interface to change |
grzemich | 0:d7bd7384a37c | 405 | * @param netmask the new netmask |
grzemich | 0:d7bd7384a37c | 406 | * |
grzemich | 0:d7bd7384a37c | 407 | * @note call netif_set_addr() if you also want to change ip address and |
grzemich | 0:d7bd7384a37c | 408 | * default gateway |
grzemich | 0:d7bd7384a37c | 409 | */ |
grzemich | 0:d7bd7384a37c | 410 | void |
grzemich | 0:d7bd7384a37c | 411 | netif_set_netmask(struct netif *netif, ip_addr_t *netmask) |
grzemich | 0:d7bd7384a37c | 412 | { |
grzemich | 0:d7bd7384a37c | 413 | snmp_delete_iprteidx_tree(0, netif); |
grzemich | 0:d7bd7384a37c | 414 | /* set new netmask to netif */ |
grzemich | 0:d7bd7384a37c | 415 | ip_addr_set(&(netif->netmask), netmask); |
grzemich | 0:d7bd7384a37c | 416 | snmp_insert_iprteidx_tree(0, netif); |
grzemich | 0:d7bd7384a37c | 417 | 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", |
grzemich | 0:d7bd7384a37c | 418 | netif->name[0], netif->name[1], |
grzemich | 0:d7bd7384a37c | 419 | ip4_addr1_16(&netif->netmask), |
grzemich | 0:d7bd7384a37c | 420 | ip4_addr2_16(&netif->netmask), |
grzemich | 0:d7bd7384a37c | 421 | ip4_addr3_16(&netif->netmask), |
grzemich | 0:d7bd7384a37c | 422 | ip4_addr4_16(&netif->netmask))); |
grzemich | 0:d7bd7384a37c | 423 | } |
grzemich | 0:d7bd7384a37c | 424 | |
grzemich | 0:d7bd7384a37c | 425 | /** |
grzemich | 0:d7bd7384a37c | 426 | * Set a network interface as the default network interface |
grzemich | 0:d7bd7384a37c | 427 | * (used to output all packets for which no specific route is found) |
grzemich | 0:d7bd7384a37c | 428 | * |
grzemich | 0:d7bd7384a37c | 429 | * @param netif the default network interface |
grzemich | 0:d7bd7384a37c | 430 | */ |
grzemich | 0:d7bd7384a37c | 431 | void |
grzemich | 0:d7bd7384a37c | 432 | netif_set_default(struct netif *netif) |
grzemich | 0:d7bd7384a37c | 433 | { |
grzemich | 0:d7bd7384a37c | 434 | if (netif == NULL) { |
grzemich | 0:d7bd7384a37c | 435 | /* remove default route */ |
grzemich | 0:d7bd7384a37c | 436 | snmp_delete_iprteidx_tree(1, netif); |
grzemich | 0:d7bd7384a37c | 437 | } else { |
grzemich | 0:d7bd7384a37c | 438 | /* install default route */ |
grzemich | 0:d7bd7384a37c | 439 | snmp_insert_iprteidx_tree(1, netif); |
grzemich | 0:d7bd7384a37c | 440 | } |
grzemich | 0:d7bd7384a37c | 441 | netif_default = netif; |
grzemich | 0:d7bd7384a37c | 442 | LWIP_DEBUGF(NETIF_DEBUG, ("netif: setting default interface %c%c\n", |
grzemich | 0:d7bd7384a37c | 443 | netif ? netif->name[0] : '\'', netif ? netif->name[1] : '\'')); |
grzemich | 0:d7bd7384a37c | 444 | } |
grzemich | 0:d7bd7384a37c | 445 | |
grzemich | 0:d7bd7384a37c | 446 | /** |
grzemich | 0:d7bd7384a37c | 447 | * Bring an interface up, available for processing |
grzemich | 0:d7bd7384a37c | 448 | * traffic. |
grzemich | 0:d7bd7384a37c | 449 | * |
grzemich | 0:d7bd7384a37c | 450 | * @note: Enabling DHCP on a down interface will make it come |
grzemich | 0:d7bd7384a37c | 451 | * up once configured. |
grzemich | 0:d7bd7384a37c | 452 | * |
grzemich | 0:d7bd7384a37c | 453 | * @see dhcp_start() |
grzemich | 0:d7bd7384a37c | 454 | */ |
grzemich | 0:d7bd7384a37c | 455 | void netif_set_up(struct netif *netif) |
grzemich | 0:d7bd7384a37c | 456 | { |
grzemich | 0:d7bd7384a37c | 457 | if (!(netif->flags & NETIF_FLAG_UP)) { |
grzemich | 0:d7bd7384a37c | 458 | netif->flags |= NETIF_FLAG_UP; |
grzemich | 0:d7bd7384a37c | 459 | |
grzemich | 0:d7bd7384a37c | 460 | #if LWIP_SNMP |
grzemich | 0:d7bd7384a37c | 461 | snmp_get_sysuptime(&netif->ts); |
grzemich | 0:d7bd7384a37c | 462 | #endif /* LWIP_SNMP */ |
grzemich | 0:d7bd7384a37c | 463 | |
grzemich | 0:d7bd7384a37c | 464 | NETIF_STATUS_CALLBACK(netif); |
grzemich | 0:d7bd7384a37c | 465 | |
grzemich | 0:d7bd7384a37c | 466 | if (netif->flags & NETIF_FLAG_LINK_UP) { |
grzemich | 0:d7bd7384a37c | 467 | #if LWIP_ARP |
grzemich | 0:d7bd7384a37c | 468 | /* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */ |
grzemich | 0:d7bd7384a37c | 469 | if (netif->flags & (NETIF_FLAG_ETHARP)) { |
grzemich | 0:d7bd7384a37c | 470 | etharp_gratuitous(netif); |
grzemich | 0:d7bd7384a37c | 471 | } |
grzemich | 0:d7bd7384a37c | 472 | #endif /* LWIP_ARP */ |
grzemich | 0:d7bd7384a37c | 473 | |
grzemich | 0:d7bd7384a37c | 474 | #if LWIP_IGMP |
grzemich | 0:d7bd7384a37c | 475 | /* resend IGMP memberships */ |
grzemich | 0:d7bd7384a37c | 476 | if (netif->flags & NETIF_FLAG_IGMP) { |
grzemich | 0:d7bd7384a37c | 477 | igmp_report_groups( netif); |
grzemich | 0:d7bd7384a37c | 478 | } |
grzemich | 0:d7bd7384a37c | 479 | #endif /* LWIP_IGMP */ |
grzemich | 0:d7bd7384a37c | 480 | } |
grzemich | 0:d7bd7384a37c | 481 | } |
grzemich | 0:d7bd7384a37c | 482 | } |
grzemich | 0:d7bd7384a37c | 483 | |
grzemich | 0:d7bd7384a37c | 484 | /** |
grzemich | 0:d7bd7384a37c | 485 | * Bring an interface down, disabling any traffic processing. |
grzemich | 0:d7bd7384a37c | 486 | * |
grzemich | 0:d7bd7384a37c | 487 | * @note: Enabling DHCP on a down interface will make it come |
grzemich | 0:d7bd7384a37c | 488 | * up once configured. |
grzemich | 0:d7bd7384a37c | 489 | * |
grzemich | 0:d7bd7384a37c | 490 | * @see dhcp_start() |
grzemich | 0:d7bd7384a37c | 491 | */ |
grzemich | 0:d7bd7384a37c | 492 | void netif_set_down(struct netif *netif) |
grzemich | 0:d7bd7384a37c | 493 | { |
grzemich | 0:d7bd7384a37c | 494 | if (netif->flags & NETIF_FLAG_UP) { |
grzemich | 0:d7bd7384a37c | 495 | netif->flags &= ~NETIF_FLAG_UP; |
grzemich | 0:d7bd7384a37c | 496 | #if LWIP_SNMP |
grzemich | 0:d7bd7384a37c | 497 | snmp_get_sysuptime(&netif->ts); |
grzemich | 0:d7bd7384a37c | 498 | #endif |
grzemich | 0:d7bd7384a37c | 499 | |
grzemich | 0:d7bd7384a37c | 500 | NETIF_STATUS_CALLBACK(netif); |
grzemich | 0:d7bd7384a37c | 501 | } |
grzemich | 0:d7bd7384a37c | 502 | } |
grzemich | 0:d7bd7384a37c | 503 | |
grzemich | 0:d7bd7384a37c | 504 | #if LWIP_NETIF_STATUS_CALLBACK |
grzemich | 0:d7bd7384a37c | 505 | /** |
grzemich | 0:d7bd7384a37c | 506 | * Set callback to be called when interface is brought up/down |
grzemich | 0:d7bd7384a37c | 507 | */ |
grzemich | 0:d7bd7384a37c | 508 | void netif_set_status_callback(struct netif *netif, netif_status_callback_fn status_callback) |
grzemich | 0:d7bd7384a37c | 509 | { |
grzemich | 0:d7bd7384a37c | 510 | if (netif) { |
grzemich | 0:d7bd7384a37c | 511 | netif->status_callback = status_callback; |
grzemich | 0:d7bd7384a37c | 512 | } |
grzemich | 0:d7bd7384a37c | 513 | } |
grzemich | 0:d7bd7384a37c | 514 | #endif /* LWIP_NETIF_STATUS_CALLBACK */ |
grzemich | 0:d7bd7384a37c | 515 | |
grzemich | 0:d7bd7384a37c | 516 | /** |
grzemich | 0:d7bd7384a37c | 517 | * Called by a driver when its link goes up |
grzemich | 0:d7bd7384a37c | 518 | */ |
grzemich | 0:d7bd7384a37c | 519 | void netif_set_link_up(struct netif *netif ) |
grzemich | 0:d7bd7384a37c | 520 | { |
grzemich | 0:d7bd7384a37c | 521 | if (!(netif->flags & NETIF_FLAG_LINK_UP)) { |
grzemich | 0:d7bd7384a37c | 522 | netif->flags |= NETIF_FLAG_LINK_UP; |
grzemich | 0:d7bd7384a37c | 523 | |
grzemich | 0:d7bd7384a37c | 524 | #if LWIP_DHCP |
grzemich | 0:d7bd7384a37c | 525 | if (netif->dhcp) { |
grzemich | 0:d7bd7384a37c | 526 | dhcp_network_changed(netif); |
grzemich | 0:d7bd7384a37c | 527 | } |
grzemich | 0:d7bd7384a37c | 528 | #endif /* LWIP_DHCP */ |
grzemich | 0:d7bd7384a37c | 529 | |
grzemich | 0:d7bd7384a37c | 530 | #if LWIP_AUTOIP |
grzemich | 0:d7bd7384a37c | 531 | if (netif->autoip) { |
grzemich | 0:d7bd7384a37c | 532 | autoip_network_changed(netif); |
grzemich | 0:d7bd7384a37c | 533 | } |
grzemich | 0:d7bd7384a37c | 534 | #endif /* LWIP_AUTOIP */ |
grzemich | 0:d7bd7384a37c | 535 | |
grzemich | 0:d7bd7384a37c | 536 | if (netif->flags & NETIF_FLAG_UP) { |
grzemich | 0:d7bd7384a37c | 537 | #if LWIP_ARP |
grzemich | 0:d7bd7384a37c | 538 | /* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */ |
grzemich | 0:d7bd7384a37c | 539 | if (netif->flags & NETIF_FLAG_ETHARP) { |
grzemich | 0:d7bd7384a37c | 540 | etharp_gratuitous(netif); |
grzemich | 0:d7bd7384a37c | 541 | } |
grzemich | 0:d7bd7384a37c | 542 | #endif /* LWIP_ARP */ |
grzemich | 0:d7bd7384a37c | 543 | |
grzemich | 0:d7bd7384a37c | 544 | #if LWIP_IGMP |
grzemich | 0:d7bd7384a37c | 545 | /* resend IGMP memberships */ |
grzemich | 0:d7bd7384a37c | 546 | if (netif->flags & NETIF_FLAG_IGMP) { |
grzemich | 0:d7bd7384a37c | 547 | igmp_report_groups( netif); |
grzemich | 0:d7bd7384a37c | 548 | } |
grzemich | 0:d7bd7384a37c | 549 | #endif /* LWIP_IGMP */ |
grzemich | 0:d7bd7384a37c | 550 | } |
grzemich | 0:d7bd7384a37c | 551 | NETIF_LINK_CALLBACK(netif); |
grzemich | 0:d7bd7384a37c | 552 | } |
grzemich | 0:d7bd7384a37c | 553 | } |
grzemich | 0:d7bd7384a37c | 554 | |
grzemich | 0:d7bd7384a37c | 555 | /** |
grzemich | 0:d7bd7384a37c | 556 | * Called by a driver when its link goes down |
grzemich | 0:d7bd7384a37c | 557 | */ |
grzemich | 0:d7bd7384a37c | 558 | void netif_set_link_down(struct netif *netif ) |
grzemich | 0:d7bd7384a37c | 559 | { |
grzemich | 0:d7bd7384a37c | 560 | if (netif->flags & NETIF_FLAG_LINK_UP) { |
grzemich | 0:d7bd7384a37c | 561 | netif->flags &= ~NETIF_FLAG_LINK_UP; |
grzemich | 0:d7bd7384a37c | 562 | NETIF_LINK_CALLBACK(netif); |
grzemich | 0:d7bd7384a37c | 563 | } |
grzemich | 0:d7bd7384a37c | 564 | } |
grzemich | 0:d7bd7384a37c | 565 | |
grzemich | 0:d7bd7384a37c | 566 | #if LWIP_NETIF_LINK_CALLBACK |
grzemich | 0:d7bd7384a37c | 567 | /** |
grzemich | 0:d7bd7384a37c | 568 | * Set callback to be called when link is brought up/down |
grzemich | 0:d7bd7384a37c | 569 | */ |
grzemich | 0:d7bd7384a37c | 570 | void netif_set_link_callback(struct netif *netif, netif_status_callback_fn link_callback) |
grzemich | 0:d7bd7384a37c | 571 | { |
grzemich | 0:d7bd7384a37c | 572 | if (netif) { |
grzemich | 0:d7bd7384a37c | 573 | netif->link_callback = link_callback; |
grzemich | 0:d7bd7384a37c | 574 | } |
grzemich | 0:d7bd7384a37c | 575 | } |
grzemich | 0:d7bd7384a37c | 576 | #endif /* LWIP_NETIF_LINK_CALLBACK */ |
grzemich | 0:d7bd7384a37c | 577 | |
grzemich | 0:d7bd7384a37c | 578 | #if ENABLE_LOOPBACK |
grzemich | 0:d7bd7384a37c | 579 | /** |
grzemich | 0:d7bd7384a37c | 580 | * Send an IP packet to be received on the same netif (loopif-like). |
grzemich | 0:d7bd7384a37c | 581 | * The pbuf is simply copied and handed back to netif->input. |
grzemich | 0:d7bd7384a37c | 582 | * In multithreaded mode, this is done directly since netif->input must put |
grzemich | 0:d7bd7384a37c | 583 | * the packet on a queue. |
grzemich | 0:d7bd7384a37c | 584 | * In callback mode, the packet is put on an internal queue and is fed to |
grzemich | 0:d7bd7384a37c | 585 | * netif->input by netif_poll(). |
grzemich | 0:d7bd7384a37c | 586 | * |
grzemich | 0:d7bd7384a37c | 587 | * @param netif the lwip network interface structure |
grzemich | 0:d7bd7384a37c | 588 | * @param p the (IP) packet to 'send' |
grzemich | 0:d7bd7384a37c | 589 | * @param ipaddr the ip address to send the packet to (not used) |
grzemich | 0:d7bd7384a37c | 590 | * @return ERR_OK if the packet has been sent |
grzemich | 0:d7bd7384a37c | 591 | * ERR_MEM if the pbuf used to copy the packet couldn't be allocated |
grzemich | 0:d7bd7384a37c | 592 | */ |
grzemich | 0:d7bd7384a37c | 593 | err_t |
grzemich | 0:d7bd7384a37c | 594 | netif_loop_output(struct netif *netif, struct pbuf *p, |
grzemich | 0:d7bd7384a37c | 595 | ip_addr_t *ipaddr) |
grzemich | 0:d7bd7384a37c | 596 | { |
grzemich | 0:d7bd7384a37c | 597 | struct pbuf *r; |
grzemich | 0:d7bd7384a37c | 598 | err_t err; |
grzemich | 0:d7bd7384a37c | 599 | struct pbuf *last; |
grzemich | 0:d7bd7384a37c | 600 | #if LWIP_LOOPBACK_MAX_PBUFS |
grzemich | 0:d7bd7384a37c | 601 | u8_t clen = 0; |
grzemich | 0:d7bd7384a37c | 602 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */ |
grzemich | 0:d7bd7384a37c | 603 | /* If we have a loopif, SNMP counters are adjusted for it, |
grzemich | 0:d7bd7384a37c | 604 | * if not they are adjusted for 'netif'. */ |
grzemich | 0:d7bd7384a37c | 605 | #if LWIP_SNMP |
grzemich | 0:d7bd7384a37c | 606 | #if LWIP_HAVE_LOOPIF |
grzemich | 0:d7bd7384a37c | 607 | struct netif *stats_if = &loop_netif; |
grzemich | 0:d7bd7384a37c | 608 | #else /* LWIP_HAVE_LOOPIF */ |
grzemich | 0:d7bd7384a37c | 609 | struct netif *stats_if = netif; |
grzemich | 0:d7bd7384a37c | 610 | #endif /* LWIP_HAVE_LOOPIF */ |
grzemich | 0:d7bd7384a37c | 611 | #endif /* LWIP_SNMP */ |
grzemich | 0:d7bd7384a37c | 612 | SYS_ARCH_DECL_PROTECT(lev); |
grzemich | 0:d7bd7384a37c | 613 | LWIP_UNUSED_ARG(ipaddr); |
grzemich | 0:d7bd7384a37c | 614 | |
grzemich | 0:d7bd7384a37c | 615 | /* Allocate a new pbuf */ |
grzemich | 0:d7bd7384a37c | 616 | r = pbuf_alloc(PBUF_LINK, p->tot_len, PBUF_RAM); |
grzemich | 0:d7bd7384a37c | 617 | if (r == NULL) { |
grzemich | 0:d7bd7384a37c | 618 | LINK_STATS_INC(link.memerr); |
grzemich | 0:d7bd7384a37c | 619 | LINK_STATS_INC(link.drop); |
grzemich | 0:d7bd7384a37c | 620 | snmp_inc_ifoutdiscards(stats_if); |
grzemich | 0:d7bd7384a37c | 621 | return ERR_MEM; |
grzemich | 0:d7bd7384a37c | 622 | } |
grzemich | 0:d7bd7384a37c | 623 | #if LWIP_LOOPBACK_MAX_PBUFS |
grzemich | 0:d7bd7384a37c | 624 | clen = pbuf_clen(r); |
grzemich | 0:d7bd7384a37c | 625 | /* check for overflow or too many pbuf on queue */ |
grzemich | 0:d7bd7384a37c | 626 | if(((netif->loop_cnt_current + clen) < netif->loop_cnt_current) || |
grzemich | 0:d7bd7384a37c | 627 | ((netif->loop_cnt_current + clen) > LWIP_LOOPBACK_MAX_PBUFS)) { |
grzemich | 0:d7bd7384a37c | 628 | pbuf_free(r); |
grzemich | 0:d7bd7384a37c | 629 | LINK_STATS_INC(link.memerr); |
grzemich | 0:d7bd7384a37c | 630 | LINK_STATS_INC(link.drop); |
grzemich | 0:d7bd7384a37c | 631 | snmp_inc_ifoutdiscards(stats_if); |
grzemich | 0:d7bd7384a37c | 632 | return ERR_MEM; |
grzemich | 0:d7bd7384a37c | 633 | } |
grzemich | 0:d7bd7384a37c | 634 | netif->loop_cnt_current += clen; |
grzemich | 0:d7bd7384a37c | 635 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */ |
grzemich | 0:d7bd7384a37c | 636 | |
grzemich | 0:d7bd7384a37c | 637 | /* Copy the whole pbuf queue p into the single pbuf r */ |
grzemich | 0:d7bd7384a37c | 638 | if ((err = pbuf_copy(r, p)) != ERR_OK) { |
grzemich | 0:d7bd7384a37c | 639 | pbuf_free(r); |
grzemich | 0:d7bd7384a37c | 640 | LINK_STATS_INC(link.memerr); |
grzemich | 0:d7bd7384a37c | 641 | LINK_STATS_INC(link.drop); |
grzemich | 0:d7bd7384a37c | 642 | snmp_inc_ifoutdiscards(stats_if); |
grzemich | 0:d7bd7384a37c | 643 | return err; |
grzemich | 0:d7bd7384a37c | 644 | } |
grzemich | 0:d7bd7384a37c | 645 | |
grzemich | 0:d7bd7384a37c | 646 | /* Put the packet on a linked list which gets emptied through calling |
grzemich | 0:d7bd7384a37c | 647 | netif_poll(). */ |
grzemich | 0:d7bd7384a37c | 648 | |
grzemich | 0:d7bd7384a37c | 649 | /* let last point to the last pbuf in chain r */ |
grzemich | 0:d7bd7384a37c | 650 | for (last = r; last->next != NULL; last = last->next); |
grzemich | 0:d7bd7384a37c | 651 | |
grzemich | 0:d7bd7384a37c | 652 | SYS_ARCH_PROTECT(lev); |
grzemich | 0:d7bd7384a37c | 653 | if(netif->loop_first != NULL) { |
grzemich | 0:d7bd7384a37c | 654 | LWIP_ASSERT("if first != NULL, last must also be != NULL", netif->loop_last != NULL); |
grzemich | 0:d7bd7384a37c | 655 | netif->loop_last->next = r; |
grzemich | 0:d7bd7384a37c | 656 | netif->loop_last = last; |
grzemich | 0:d7bd7384a37c | 657 | } else { |
grzemich | 0:d7bd7384a37c | 658 | netif->loop_first = r; |
grzemich | 0:d7bd7384a37c | 659 | netif->loop_last = last; |
grzemich | 0:d7bd7384a37c | 660 | } |
grzemich | 0:d7bd7384a37c | 661 | SYS_ARCH_UNPROTECT(lev); |
grzemich | 0:d7bd7384a37c | 662 | |
grzemich | 0:d7bd7384a37c | 663 | LINK_STATS_INC(link.xmit); |
grzemich | 0:d7bd7384a37c | 664 | snmp_add_ifoutoctets(stats_if, p->tot_len); |
grzemich | 0:d7bd7384a37c | 665 | snmp_inc_ifoutucastpkts(stats_if); |
grzemich | 0:d7bd7384a37c | 666 | |
grzemich | 0:d7bd7384a37c | 667 | #if LWIP_NETIF_LOOPBACK_MULTITHREADING |
grzemich | 0:d7bd7384a37c | 668 | /* For multithreading environment, schedule a call to netif_poll */ |
grzemich | 0:d7bd7384a37c | 669 | tcpip_callback((tcpip_callback_fn)netif_poll, netif); |
grzemich | 0:d7bd7384a37c | 670 | #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */ |
grzemich | 0:d7bd7384a37c | 671 | |
grzemich | 0:d7bd7384a37c | 672 | return ERR_OK; |
grzemich | 0:d7bd7384a37c | 673 | } |
grzemich | 0:d7bd7384a37c | 674 | |
grzemich | 0:d7bd7384a37c | 675 | /** |
grzemich | 0:d7bd7384a37c | 676 | * Call netif_poll() in the main loop of your application. This is to prevent |
grzemich | 0:d7bd7384a37c | 677 | * reentering non-reentrant functions like tcp_input(). Packets passed to |
grzemich | 0:d7bd7384a37c | 678 | * netif_loop_output() are put on a list that is passed to netif->input() by |
grzemich | 0:d7bd7384a37c | 679 | * netif_poll(). |
grzemich | 0:d7bd7384a37c | 680 | */ |
grzemich | 0:d7bd7384a37c | 681 | void |
grzemich | 0:d7bd7384a37c | 682 | netif_poll(struct netif *netif) |
grzemich | 0:d7bd7384a37c | 683 | { |
grzemich | 0:d7bd7384a37c | 684 | struct pbuf *in; |
grzemich | 0:d7bd7384a37c | 685 | /* If we have a loopif, SNMP counters are adjusted for it, |
grzemich | 0:d7bd7384a37c | 686 | * if not they are adjusted for 'netif'. */ |
grzemich | 0:d7bd7384a37c | 687 | #if LWIP_SNMP |
grzemich | 0:d7bd7384a37c | 688 | #if LWIP_HAVE_LOOPIF |
grzemich | 0:d7bd7384a37c | 689 | struct netif *stats_if = &loop_netif; |
grzemich | 0:d7bd7384a37c | 690 | #else /* LWIP_HAVE_LOOPIF */ |
grzemich | 0:d7bd7384a37c | 691 | struct netif *stats_if = netif; |
grzemich | 0:d7bd7384a37c | 692 | #endif /* LWIP_HAVE_LOOPIF */ |
grzemich | 0:d7bd7384a37c | 693 | #endif /* LWIP_SNMP */ |
grzemich | 0:d7bd7384a37c | 694 | SYS_ARCH_DECL_PROTECT(lev); |
grzemich | 0:d7bd7384a37c | 695 | |
grzemich | 0:d7bd7384a37c | 696 | do { |
grzemich | 0:d7bd7384a37c | 697 | /* Get a packet from the list. With SYS_LIGHTWEIGHT_PROT=1, this is protected */ |
grzemich | 0:d7bd7384a37c | 698 | SYS_ARCH_PROTECT(lev); |
grzemich | 0:d7bd7384a37c | 699 | in = netif->loop_first; |
grzemich | 0:d7bd7384a37c | 700 | if (in != NULL) { |
grzemich | 0:d7bd7384a37c | 701 | struct pbuf *in_end = in; |
grzemich | 0:d7bd7384a37c | 702 | #if LWIP_LOOPBACK_MAX_PBUFS |
grzemich | 0:d7bd7384a37c | 703 | u8_t clen = pbuf_clen(in); |
grzemich | 0:d7bd7384a37c | 704 | /* adjust the number of pbufs on queue */ |
grzemich | 0:d7bd7384a37c | 705 | LWIP_ASSERT("netif->loop_cnt_current underflow", |
grzemich | 0:d7bd7384a37c | 706 | ((netif->loop_cnt_current - clen) < netif->loop_cnt_current)); |
grzemich | 0:d7bd7384a37c | 707 | netif->loop_cnt_current -= clen; |
grzemich | 0:d7bd7384a37c | 708 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */ |
grzemich | 0:d7bd7384a37c | 709 | while (in_end->len != in_end->tot_len) { |
grzemich | 0:d7bd7384a37c | 710 | LWIP_ASSERT("bogus pbuf: len != tot_len but next == NULL!", in_end->next != NULL); |
grzemich | 0:d7bd7384a37c | 711 | in_end = in_end->next; |
grzemich | 0:d7bd7384a37c | 712 | } |
grzemich | 0:d7bd7384a37c | 713 | /* 'in_end' now points to the last pbuf from 'in' */ |
grzemich | 0:d7bd7384a37c | 714 | if (in_end == netif->loop_last) { |
grzemich | 0:d7bd7384a37c | 715 | /* this was the last pbuf in the list */ |
grzemich | 0:d7bd7384a37c | 716 | netif->loop_first = netif->loop_last = NULL; |
grzemich | 0:d7bd7384a37c | 717 | } else { |
grzemich | 0:d7bd7384a37c | 718 | /* pop the pbuf off the list */ |
grzemich | 0:d7bd7384a37c | 719 | netif->loop_first = in_end->next; |
grzemich | 0:d7bd7384a37c | 720 | LWIP_ASSERT("should not be null since first != last!", netif->loop_first != NULL); |
grzemich | 0:d7bd7384a37c | 721 | } |
grzemich | 0:d7bd7384a37c | 722 | /* De-queue the pbuf from its successors on the 'loop_' list. */ |
grzemich | 0:d7bd7384a37c | 723 | in_end->next = NULL; |
grzemich | 0:d7bd7384a37c | 724 | } |
grzemich | 0:d7bd7384a37c | 725 | SYS_ARCH_UNPROTECT(lev); |
grzemich | 0:d7bd7384a37c | 726 | |
grzemich | 0:d7bd7384a37c | 727 | if (in != NULL) { |
grzemich | 0:d7bd7384a37c | 728 | LINK_STATS_INC(link.recv); |
grzemich | 0:d7bd7384a37c | 729 | snmp_add_ifinoctets(stats_if, in->tot_len); |
grzemich | 0:d7bd7384a37c | 730 | snmp_inc_ifinucastpkts(stats_if); |
grzemich | 0:d7bd7384a37c | 731 | /* loopback packets are always IP packets! */ |
grzemich | 0:d7bd7384a37c | 732 | if (ip_input(in, netif) != ERR_OK) { |
grzemich | 0:d7bd7384a37c | 733 | pbuf_free(in); |
grzemich | 0:d7bd7384a37c | 734 | } |
grzemich | 0:d7bd7384a37c | 735 | /* Don't reference the packet any more! */ |
grzemich | 0:d7bd7384a37c | 736 | in = NULL; |
grzemich | 0:d7bd7384a37c | 737 | } |
grzemich | 0:d7bd7384a37c | 738 | /* go on while there is a packet on the list */ |
grzemich | 0:d7bd7384a37c | 739 | } while (netif->loop_first != NULL); |
grzemich | 0:d7bd7384a37c | 740 | } |
grzemich | 0:d7bd7384a37c | 741 | |
grzemich | 0:d7bd7384a37c | 742 | #if !LWIP_NETIF_LOOPBACK_MULTITHREADING |
grzemich | 0:d7bd7384a37c | 743 | /** |
grzemich | 0:d7bd7384a37c | 744 | * Calls netif_poll() for every netif on the netif_list. |
grzemich | 0:d7bd7384a37c | 745 | */ |
grzemich | 0:d7bd7384a37c | 746 | void |
grzemich | 0:d7bd7384a37c | 747 | netif_poll_all(void) |
grzemich | 0:d7bd7384a37c | 748 | { |
grzemich | 0:d7bd7384a37c | 749 | struct netif *netif = netif_list; |
grzemich | 0:d7bd7384a37c | 750 | /* loop through netifs */ |
grzemich | 0:d7bd7384a37c | 751 | while (netif != NULL) { |
grzemich | 0:d7bd7384a37c | 752 | netif_poll(netif); |
grzemich | 0:d7bd7384a37c | 753 | /* proceed to next network interface */ |
grzemich | 0:d7bd7384a37c | 754 | netif = netif->next; |
grzemich | 0:d7bd7384a37c | 755 | } |
grzemich | 0:d7bd7384a37c | 756 | } |
grzemich | 0:d7bd7384a37c | 757 | #endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */ |
grzemich | 0:d7bd7384a37c | 758 | #endif /* ENABLE_LOOPBACK */ |