My fork of the HTTPServer (working)
Core/lwIP/core/netif.c@1:284f2df30cf9, 2012-11-20 (annotated)
- Committer:
- screamer
- Date:
- Tue Nov 20 12:18:53 2012 +0000
- Revision:
- 1:284f2df30cf9
- Parent:
- 0:7a64fbb4069d
local changes
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
screamer | 0:7a64fbb4069d | 1 | /** |
screamer | 0:7a64fbb4069d | 2 | * @file |
screamer | 0:7a64fbb4069d | 3 | * lwIP network interface abstraction |
screamer | 0:7a64fbb4069d | 4 | * |
screamer | 0:7a64fbb4069d | 5 | */ |
screamer | 0:7a64fbb4069d | 6 | |
screamer | 0:7a64fbb4069d | 7 | /* |
screamer | 0:7a64fbb4069d | 8 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science. |
screamer | 0:7a64fbb4069d | 9 | * All rights reserved. |
screamer | 0:7a64fbb4069d | 10 | * |
screamer | 0:7a64fbb4069d | 11 | * Redistribution and use in source and binary forms, with or without modification, |
screamer | 0:7a64fbb4069d | 12 | * are permitted provided that the following conditions are met: |
screamer | 0:7a64fbb4069d | 13 | * |
screamer | 0:7a64fbb4069d | 14 | * 1. Redistributions of source code must retain the above copyright notice, |
screamer | 0:7a64fbb4069d | 15 | * this list of conditions and the following disclaimer. |
screamer | 0:7a64fbb4069d | 16 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
screamer | 0:7a64fbb4069d | 17 | * this list of conditions and the following disclaimer in the documentation |
screamer | 0:7a64fbb4069d | 18 | * and/or other materials provided with the distribution. |
screamer | 0:7a64fbb4069d | 19 | * 3. The name of the author may not be used to endorse or promote products |
screamer | 0:7a64fbb4069d | 20 | * derived from this software without specific prior written permission. |
screamer | 0:7a64fbb4069d | 21 | * |
screamer | 0:7a64fbb4069d | 22 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
screamer | 0:7a64fbb4069d | 23 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
screamer | 0:7a64fbb4069d | 24 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
screamer | 0:7a64fbb4069d | 25 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
screamer | 0:7a64fbb4069d | 26 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
screamer | 0:7a64fbb4069d | 27 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
screamer | 0:7a64fbb4069d | 28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
screamer | 0:7a64fbb4069d | 29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
screamer | 0:7a64fbb4069d | 30 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
screamer | 0:7a64fbb4069d | 31 | * OF SUCH DAMAGE. |
screamer | 0:7a64fbb4069d | 32 | * |
screamer | 0:7a64fbb4069d | 33 | * This file is part of the lwIP TCP/IP stack. |
screamer | 0:7a64fbb4069d | 34 | * |
screamer | 0:7a64fbb4069d | 35 | * Author: Adam Dunkels <adam@sics.se> |
screamer | 0:7a64fbb4069d | 36 | * |
screamer | 0:7a64fbb4069d | 37 | */ |
screamer | 0:7a64fbb4069d | 38 | |
screamer | 0:7a64fbb4069d | 39 | #include "lwip/opt.h" |
screamer | 0:7a64fbb4069d | 40 | |
screamer | 0:7a64fbb4069d | 41 | #include "lwip/def.h" |
screamer | 0:7a64fbb4069d | 42 | #include "lwip/ip_addr.h" |
screamer | 0:7a64fbb4069d | 43 | #include "lwip/netif.h" |
screamer | 0:7a64fbb4069d | 44 | #include "lwip/tcp.h" |
screamer | 0:7a64fbb4069d | 45 | #include "lwip/snmp.h" |
screamer | 0:7a64fbb4069d | 46 | #include "lwip/igmp.h" |
screamer | 0:7a64fbb4069d | 47 | #include "netif/etharp.h" |
screamer | 0:7a64fbb4069d | 48 | #if ENABLE_LOOPBACK |
screamer | 0:7a64fbb4069d | 49 | #include "lwip/sys.h" |
screamer | 0:7a64fbb4069d | 50 | #if LWIP_NETIF_LOOPBACK_MULTITHREADING |
screamer | 0:7a64fbb4069d | 51 | #include "lwip/tcpip.h" |
screamer | 0:7a64fbb4069d | 52 | #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */ |
screamer | 0:7a64fbb4069d | 53 | #endif /* ENABLE_LOOPBACK */ |
screamer | 0:7a64fbb4069d | 54 | |
screamer | 0:7a64fbb4069d | 55 | #if LWIP_NETIF_STATUS_CALLBACK |
screamer | 0:7a64fbb4069d | 56 | #define NETIF_STATUS_CALLBACK(n) { if (n->status_callback) (n->status_callback)(n); } |
screamer | 0:7a64fbb4069d | 57 | #else |
screamer | 0:7a64fbb4069d | 58 | #define NETIF_STATUS_CALLBACK(n) { /* NOP */ } |
screamer | 0:7a64fbb4069d | 59 | #endif /* LWIP_NETIF_STATUS_CALLBACK */ |
screamer | 0:7a64fbb4069d | 60 | |
screamer | 0:7a64fbb4069d | 61 | #if LWIP_NETIF_LINK_CALLBACK |
screamer | 0:7a64fbb4069d | 62 | #define NETIF_LINK_CALLBACK(n) { if (n->link_callback) (n->link_callback)(n); } |
screamer | 0:7a64fbb4069d | 63 | #else |
screamer | 0:7a64fbb4069d | 64 | #define NETIF_LINK_CALLBACK(n) { /* NOP */ } |
screamer | 0:7a64fbb4069d | 65 | #endif /* LWIP_NETIF_LINK_CALLBACK */ |
screamer | 0:7a64fbb4069d | 66 | |
screamer | 0:7a64fbb4069d | 67 | struct netif *netif_list; |
screamer | 0:7a64fbb4069d | 68 | struct netif *netif_default; |
screamer | 0:7a64fbb4069d | 69 | |
screamer | 0:7a64fbb4069d | 70 | /** |
screamer | 0:7a64fbb4069d | 71 | * Add a network interface to the list of lwIP netifs. |
screamer | 0:7a64fbb4069d | 72 | * |
screamer | 0:7a64fbb4069d | 73 | * @param netif a pre-allocated netif structure |
screamer | 0:7a64fbb4069d | 74 | * @param ipaddr IP address for the new netif |
screamer | 0:7a64fbb4069d | 75 | * @param netmask network mask for the new netif |
screamer | 0:7a64fbb4069d | 76 | * @param gw default gateway IP address for the new netif |
screamer | 0:7a64fbb4069d | 77 | * @param state opaque data passed to the new netif |
screamer | 0:7a64fbb4069d | 78 | * @param init callback function that initializes the interface |
screamer | 0:7a64fbb4069d | 79 | * @param input callback function that is called to pass |
screamer | 0:7a64fbb4069d | 80 | * ingress packets up in the protocol layer stack. |
screamer | 0:7a64fbb4069d | 81 | * |
screamer | 0:7a64fbb4069d | 82 | * @return netif, or NULL if failed. |
screamer | 0:7a64fbb4069d | 83 | */ |
screamer | 0:7a64fbb4069d | 84 | struct netif * |
screamer | 0:7a64fbb4069d | 85 | netif_add(struct netif *netif, struct ip_addr *ipaddr, struct ip_addr *netmask, |
screamer | 0:7a64fbb4069d | 86 | struct ip_addr *gw, |
screamer | 0:7a64fbb4069d | 87 | void *state, |
screamer | 0:7a64fbb4069d | 88 | err_t (* init)(struct netif *netif), |
screamer | 0:7a64fbb4069d | 89 | err_t (* input)(struct pbuf *p, struct netif *netif)) |
screamer | 0:7a64fbb4069d | 90 | { |
screamer | 0:7a64fbb4069d | 91 | static u8_t netifnum = 0; |
screamer | 0:7a64fbb4069d | 92 | |
screamer | 0:7a64fbb4069d | 93 | /* reset new interface configuration state */ |
screamer | 0:7a64fbb4069d | 94 | netif->ip_addr.addr = 0; |
screamer | 0:7a64fbb4069d | 95 | netif->netmask.addr = 0; |
screamer | 0:7a64fbb4069d | 96 | netif->gw.addr = 0; |
screamer | 0:7a64fbb4069d | 97 | netif->flags = 0; |
screamer | 0:7a64fbb4069d | 98 | #if LWIP_DHCP |
screamer | 0:7a64fbb4069d | 99 | /* netif not under DHCP control by default */ |
screamer | 0:7a64fbb4069d | 100 | netif->dhcp = NULL; |
screamer | 0:7a64fbb4069d | 101 | #endif /* LWIP_DHCP */ |
screamer | 0:7a64fbb4069d | 102 | #if LWIP_AUTOIP |
screamer | 0:7a64fbb4069d | 103 | /* netif not under AutoIP control by default */ |
screamer | 0:7a64fbb4069d | 104 | netif->autoip = NULL; |
screamer | 0:7a64fbb4069d | 105 | #endif /* LWIP_AUTOIP */ |
screamer | 0:7a64fbb4069d | 106 | #if LWIP_NETIF_STATUS_CALLBACK |
screamer | 0:7a64fbb4069d | 107 | netif->status_callback = NULL; |
screamer | 0:7a64fbb4069d | 108 | #endif /* LWIP_NETIF_STATUS_CALLBACK */ |
screamer | 0:7a64fbb4069d | 109 | #if LWIP_NETIF_LINK_CALLBACK |
screamer | 0:7a64fbb4069d | 110 | netif->link_callback = NULL; |
screamer | 0:7a64fbb4069d | 111 | #endif /* LWIP_NETIF_LINK_CALLBACK */ |
screamer | 0:7a64fbb4069d | 112 | #if LWIP_IGMP |
screamer | 0:7a64fbb4069d | 113 | netif->igmp_mac_filter = NULL; |
screamer | 0:7a64fbb4069d | 114 | #endif /* LWIP_IGMP */ |
screamer | 0:7a64fbb4069d | 115 | #if ENABLE_LOOPBACK |
screamer | 0:7a64fbb4069d | 116 | netif->loop_first = NULL; |
screamer | 0:7a64fbb4069d | 117 | netif->loop_last = NULL; |
screamer | 0:7a64fbb4069d | 118 | #endif /* ENABLE_LOOPBACK */ |
screamer | 0:7a64fbb4069d | 119 | |
screamer | 0:7a64fbb4069d | 120 | /* remember netif specific state information data */ |
screamer | 0:7a64fbb4069d | 121 | netif->state = state; |
screamer | 0:7a64fbb4069d | 122 | netif->num = netifnum++; |
screamer | 0:7a64fbb4069d | 123 | netif->input = input; |
screamer | 0:7a64fbb4069d | 124 | #if LWIP_NETIF_HWADDRHINT |
screamer | 0:7a64fbb4069d | 125 | netif->addr_hint = NULL; |
screamer | 0:7a64fbb4069d | 126 | #endif /* LWIP_NETIF_HWADDRHINT*/ |
screamer | 0:7a64fbb4069d | 127 | #if ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS |
screamer | 0:7a64fbb4069d | 128 | netif->loop_cnt_current = 0; |
screamer | 0:7a64fbb4069d | 129 | #endif /* ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS */ |
screamer | 0:7a64fbb4069d | 130 | |
screamer | 0:7a64fbb4069d | 131 | netif_set_addr(netif, ipaddr, netmask, gw); |
screamer | 0:7a64fbb4069d | 132 | |
screamer | 0:7a64fbb4069d | 133 | /* call user specified initialization function for netif */ |
screamer | 0:7a64fbb4069d | 134 | if (init(netif) != ERR_OK) { |
screamer | 0:7a64fbb4069d | 135 | return (struct netif *)(NULL); |
screamer | 0:7a64fbb4069d | 136 | } |
screamer | 0:7a64fbb4069d | 137 | |
screamer | 0:7a64fbb4069d | 138 | /* add this netif to the list */ |
screamer | 0:7a64fbb4069d | 139 | netif->next = netif_list; |
screamer | 0:7a64fbb4069d | 140 | netif_list = netif; |
screamer | 0:7a64fbb4069d | 141 | snmp_inc_iflist(); |
screamer | 0:7a64fbb4069d | 142 | |
screamer | 0:7a64fbb4069d | 143 | #if LWIP_IGMP |
screamer | 0:7a64fbb4069d | 144 | /* start IGMP processing */ |
screamer | 0:7a64fbb4069d | 145 | if (netif->flags & NETIF_FLAG_IGMP) { |
screamer | 0:7a64fbb4069d | 146 | igmp_start( netif); |
screamer | 0:7a64fbb4069d | 147 | } |
screamer | 0:7a64fbb4069d | 148 | #endif /* LWIP_IGMP */ |
screamer | 0:7a64fbb4069d | 149 | |
screamer | 0:7a64fbb4069d | 150 | LWIP_DEBUGF(NETIF_DEBUG, ("netif: added interface %c%c IP addr ", |
screamer | 0:7a64fbb4069d | 151 | netif->name[0], netif->name[1])); |
screamer | 0:7a64fbb4069d | 152 | ip_addr_debug_print(NETIF_DEBUG, ipaddr); |
screamer | 0:7a64fbb4069d | 153 | LWIP_DEBUGF(NETIF_DEBUG, (" netmask ")); |
screamer | 0:7a64fbb4069d | 154 | ip_addr_debug_print(NETIF_DEBUG, netmask); |
screamer | 0:7a64fbb4069d | 155 | LWIP_DEBUGF(NETIF_DEBUG, (" gw ")); |
screamer | 0:7a64fbb4069d | 156 | ip_addr_debug_print(NETIF_DEBUG, gw); |
screamer | 0:7a64fbb4069d | 157 | LWIP_DEBUGF(NETIF_DEBUG, ("\n")); |
screamer | 0:7a64fbb4069d | 158 | return netif; |
screamer | 0:7a64fbb4069d | 159 | } |
screamer | 0:7a64fbb4069d | 160 | |
screamer | 0:7a64fbb4069d | 161 | /** |
screamer | 0:7a64fbb4069d | 162 | * Change IP address configuration for a network interface (including netmask |
screamer | 0:7a64fbb4069d | 163 | * and default gateway). |
screamer | 0:7a64fbb4069d | 164 | * |
screamer | 0:7a64fbb4069d | 165 | * @param netif the network interface to change |
screamer | 0:7a64fbb4069d | 166 | * @param ipaddr the new IP address |
screamer | 0:7a64fbb4069d | 167 | * @param netmask the new netmask |
screamer | 0:7a64fbb4069d | 168 | * @param gw the new default gateway |
screamer | 0:7a64fbb4069d | 169 | */ |
screamer | 0:7a64fbb4069d | 170 | void |
screamer | 0:7a64fbb4069d | 171 | netif_set_addr(struct netif *netif, struct ip_addr *ipaddr, struct ip_addr *netmask, |
screamer | 0:7a64fbb4069d | 172 | struct ip_addr *gw) |
screamer | 0:7a64fbb4069d | 173 | { |
screamer | 0:7a64fbb4069d | 174 | netif_set_ipaddr(netif, ipaddr); |
screamer | 0:7a64fbb4069d | 175 | netif_set_netmask(netif, netmask); |
screamer | 0:7a64fbb4069d | 176 | netif_set_gw(netif, gw); |
screamer | 0:7a64fbb4069d | 177 | } |
screamer | 0:7a64fbb4069d | 178 | |
screamer | 0:7a64fbb4069d | 179 | /** |
screamer | 0:7a64fbb4069d | 180 | * Remove a network interface from the list of lwIP netifs. |
screamer | 0:7a64fbb4069d | 181 | * |
screamer | 0:7a64fbb4069d | 182 | * @param netif the network interface to remove |
screamer | 0:7a64fbb4069d | 183 | */ |
screamer | 0:7a64fbb4069d | 184 | void netif_remove(struct netif * netif) |
screamer | 0:7a64fbb4069d | 185 | { |
screamer | 0:7a64fbb4069d | 186 | if ( netif == NULL ) return; |
screamer | 0:7a64fbb4069d | 187 | |
screamer | 0:7a64fbb4069d | 188 | #if LWIP_IGMP |
screamer | 0:7a64fbb4069d | 189 | /* stop IGMP processing */ |
screamer | 0:7a64fbb4069d | 190 | if (netif->flags & NETIF_FLAG_IGMP) { |
screamer | 0:7a64fbb4069d | 191 | igmp_stop( netif); |
screamer | 0:7a64fbb4069d | 192 | } |
screamer | 0:7a64fbb4069d | 193 | #endif /* LWIP_IGMP */ |
screamer | 0:7a64fbb4069d | 194 | |
screamer | 0:7a64fbb4069d | 195 | snmp_delete_ipaddridx_tree(netif); |
screamer | 0:7a64fbb4069d | 196 | |
screamer | 0:7a64fbb4069d | 197 | /* is it the first netif? */ |
screamer | 0:7a64fbb4069d | 198 | if (netif_list == netif) { |
screamer | 0:7a64fbb4069d | 199 | netif_list = netif->next; |
screamer | 0:7a64fbb4069d | 200 | snmp_dec_iflist(); |
screamer | 0:7a64fbb4069d | 201 | } |
screamer | 0:7a64fbb4069d | 202 | else { |
screamer | 0:7a64fbb4069d | 203 | /* look for netif further down the list */ |
screamer | 0:7a64fbb4069d | 204 | struct netif * tmpNetif; |
screamer | 0:7a64fbb4069d | 205 | for (tmpNetif = netif_list; tmpNetif != NULL; tmpNetif = tmpNetif->next) { |
screamer | 0:7a64fbb4069d | 206 | if (tmpNetif->next == netif) { |
screamer | 0:7a64fbb4069d | 207 | tmpNetif->next = netif->next; |
screamer | 0:7a64fbb4069d | 208 | snmp_dec_iflist(); |
screamer | 0:7a64fbb4069d | 209 | break; |
screamer | 0:7a64fbb4069d | 210 | } |
screamer | 0:7a64fbb4069d | 211 | } |
screamer | 0:7a64fbb4069d | 212 | if (tmpNetif == NULL) |
screamer | 0:7a64fbb4069d | 213 | return; /* we didn't find any netif today */ |
screamer | 0:7a64fbb4069d | 214 | } |
screamer | 0:7a64fbb4069d | 215 | /* this netif is default? */ |
screamer | 0:7a64fbb4069d | 216 | if (netif_default == netif) |
screamer | 0:7a64fbb4069d | 217 | /* reset default netif */ |
screamer | 0:7a64fbb4069d | 218 | netif_set_default((struct netif *)(NULL)); |
screamer | 0:7a64fbb4069d | 219 | LWIP_DEBUGF( NETIF_DEBUG, ("netif_remove: removed netif\n") ); |
screamer | 0:7a64fbb4069d | 220 | } |
screamer | 0:7a64fbb4069d | 221 | |
screamer | 0:7a64fbb4069d | 222 | /** |
screamer | 0:7a64fbb4069d | 223 | * Find a network interface by searching for its name |
screamer | 0:7a64fbb4069d | 224 | * |
screamer | 0:7a64fbb4069d | 225 | * @param name the name of the netif (like netif->name) plus concatenated number |
screamer | 0:7a64fbb4069d | 226 | * in ascii representation (e.g. 'en0') |
screamer | 0:7a64fbb4069d | 227 | */ |
screamer | 0:7a64fbb4069d | 228 | struct netif * |
screamer | 0:7a64fbb4069d | 229 | netif_find(char *name) |
screamer | 0:7a64fbb4069d | 230 | { |
screamer | 0:7a64fbb4069d | 231 | struct netif *netif; |
screamer | 0:7a64fbb4069d | 232 | u8_t num; |
screamer | 0:7a64fbb4069d | 233 | |
screamer | 0:7a64fbb4069d | 234 | if (name == NULL) { |
screamer | 0:7a64fbb4069d | 235 | return (struct netif *)(NULL); |
screamer | 0:7a64fbb4069d | 236 | } |
screamer | 0:7a64fbb4069d | 237 | |
screamer | 0:7a64fbb4069d | 238 | num = name[2] - '0'; |
screamer | 0:7a64fbb4069d | 239 | |
screamer | 0:7a64fbb4069d | 240 | for(netif = netif_list; netif != NULL; netif = netif->next) { |
screamer | 0:7a64fbb4069d | 241 | if (num == netif->num && |
screamer | 0:7a64fbb4069d | 242 | name[0] == netif->name[0] && |
screamer | 0:7a64fbb4069d | 243 | name[1] == netif->name[1]) { |
screamer | 0:7a64fbb4069d | 244 | LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: found %c%c\n", name[0], name[1])); |
screamer | 0:7a64fbb4069d | 245 | return netif; |
screamer | 0:7a64fbb4069d | 246 | } |
screamer | 0:7a64fbb4069d | 247 | } |
screamer | 0:7a64fbb4069d | 248 | LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: didn't find %c%c\n", name[0], name[1])); |
screamer | 0:7a64fbb4069d | 249 | return (struct netif *)(NULL); |
screamer | 0:7a64fbb4069d | 250 | } |
screamer | 0:7a64fbb4069d | 251 | |
screamer | 0:7a64fbb4069d | 252 | /** |
screamer | 0:7a64fbb4069d | 253 | * Change the IP address of a network interface |
screamer | 0:7a64fbb4069d | 254 | * |
screamer | 0:7a64fbb4069d | 255 | * @param netif the network interface to change |
screamer | 0:7a64fbb4069d | 256 | * @param ipaddr the new IP address |
screamer | 0:7a64fbb4069d | 257 | * |
screamer | 0:7a64fbb4069d | 258 | * @note call netif_set_addr() if you also want to change netmask and |
screamer | 0:7a64fbb4069d | 259 | * default gateway |
screamer | 0:7a64fbb4069d | 260 | */ |
screamer | 0:7a64fbb4069d | 261 | void |
screamer | 0:7a64fbb4069d | 262 | netif_set_ipaddr(struct netif *netif, struct ip_addr *ipaddr) |
screamer | 0:7a64fbb4069d | 263 | { |
screamer | 0:7a64fbb4069d | 264 | /* TODO: Handling of obsolete pcbs */ |
screamer | 0:7a64fbb4069d | 265 | /* See: http://mail.gnu.org/archive/html/lwip-users/2003-03/msg00118.html */ |
screamer | 0:7a64fbb4069d | 266 | #if LWIP_TCP |
screamer | 0:7a64fbb4069d | 267 | struct tcp_pcb *pcb; |
screamer | 0:7a64fbb4069d | 268 | struct tcp_pcb_listen *lpcb; |
screamer | 0:7a64fbb4069d | 269 | |
screamer | 0:7a64fbb4069d | 270 | /* address is actually being changed? */ |
screamer | 0:7a64fbb4069d | 271 | if ((ip_addr_cmp(ipaddr, &(netif->ip_addr))) == 0) |
screamer | 0:7a64fbb4069d | 272 | { |
screamer | 0:7a64fbb4069d | 273 | /* extern struct tcp_pcb *tcp_active_pcbs; defined by tcp.h */ |
screamer | 0:7a64fbb4069d | 274 | LWIP_DEBUGF(NETIF_DEBUG | 1, ("netif_set_ipaddr: netif address being changed\n")); |
screamer | 0:7a64fbb4069d | 275 | pcb = tcp_active_pcbs; |
screamer | 0:7a64fbb4069d | 276 | while (pcb != NULL) { |
screamer | 0:7a64fbb4069d | 277 | /* PCB bound to current local interface address? */ |
screamer | 0:7a64fbb4069d | 278 | if (ip_addr_cmp(&(pcb->local_ip), &(netif->ip_addr))) { |
screamer | 0:7a64fbb4069d | 279 | /* this connection must be aborted */ |
screamer | 0:7a64fbb4069d | 280 | struct tcp_pcb *next = pcb->next; |
screamer | 0:7a64fbb4069d | 281 | LWIP_DEBUGF(NETIF_DEBUG | 1, ("netif_set_ipaddr: aborting TCP pcb %p\n", (void *)pcb)); |
screamer | 0:7a64fbb4069d | 282 | tcp_abort(pcb); |
screamer | 0:7a64fbb4069d | 283 | pcb = next; |
screamer | 0:7a64fbb4069d | 284 | } else { |
screamer | 0:7a64fbb4069d | 285 | pcb = pcb->next; |
screamer | 0:7a64fbb4069d | 286 | } |
screamer | 0:7a64fbb4069d | 287 | } |
screamer | 0:7a64fbb4069d | 288 | for (lpcb = tcp_listen_pcbs.listen_pcbs; lpcb != NULL; lpcb = lpcb->next) { |
screamer | 0:7a64fbb4069d | 289 | /* PCB bound to current local interface address? */ |
screamer | 0:7a64fbb4069d | 290 | if ((!(ip_addr_isany(&(lpcb->local_ip)))) && |
screamer | 0:7a64fbb4069d | 291 | (ip_addr_cmp(&(lpcb->local_ip), &(netif->ip_addr)))) { |
screamer | 0:7a64fbb4069d | 292 | /* The PCB is listening to the old ipaddr and |
screamer | 0:7a64fbb4069d | 293 | * is set to listen to the new one instead */ |
screamer | 0:7a64fbb4069d | 294 | ip_addr_set(&(lpcb->local_ip), ipaddr); |
screamer | 0:7a64fbb4069d | 295 | } |
screamer | 0:7a64fbb4069d | 296 | } |
screamer | 0:7a64fbb4069d | 297 | } |
screamer | 0:7a64fbb4069d | 298 | #endif |
screamer | 0:7a64fbb4069d | 299 | snmp_delete_ipaddridx_tree(netif); |
screamer | 0:7a64fbb4069d | 300 | snmp_delete_iprteidx_tree(0,netif); |
screamer | 0:7a64fbb4069d | 301 | /* set new IP address to netif */ |
screamer | 0:7a64fbb4069d | 302 | ip_addr_set(&(netif->ip_addr), ipaddr); |
screamer | 0:7a64fbb4069d | 303 | snmp_insert_ipaddridx_tree(netif); |
screamer | 0:7a64fbb4069d | 304 | snmp_insert_iprteidx_tree(0,netif); |
screamer | 0:7a64fbb4069d | 305 | |
screamer | 0:7a64fbb4069d | 306 | 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", |
screamer | 0:7a64fbb4069d | 307 | netif->name[0], netif->name[1], |
screamer | 0:7a64fbb4069d | 308 | ip4_addr1(&netif->ip_addr), |
screamer | 0:7a64fbb4069d | 309 | ip4_addr2(&netif->ip_addr), |
screamer | 0:7a64fbb4069d | 310 | ip4_addr3(&netif->ip_addr), |
screamer | 0:7a64fbb4069d | 311 | ip4_addr4(&netif->ip_addr))); |
screamer | 0:7a64fbb4069d | 312 | } |
screamer | 0:7a64fbb4069d | 313 | |
screamer | 0:7a64fbb4069d | 314 | /** |
screamer | 0:7a64fbb4069d | 315 | * Change the default gateway for a network interface |
screamer | 0:7a64fbb4069d | 316 | * |
screamer | 0:7a64fbb4069d | 317 | * @param netif the network interface to change |
screamer | 0:7a64fbb4069d | 318 | * @param gw the new default gateway |
screamer | 0:7a64fbb4069d | 319 | * |
screamer | 0:7a64fbb4069d | 320 | * @note call netif_set_addr() if you also want to change ip address and netmask |
screamer | 0:7a64fbb4069d | 321 | */ |
screamer | 0:7a64fbb4069d | 322 | void |
screamer | 0:7a64fbb4069d | 323 | netif_set_gw(struct netif *netif, struct ip_addr *gw) |
screamer | 0:7a64fbb4069d | 324 | { |
screamer | 0:7a64fbb4069d | 325 | ip_addr_set(&(netif->gw), gw); |
screamer | 0:7a64fbb4069d | 326 | 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", |
screamer | 0:7a64fbb4069d | 327 | netif->name[0], netif->name[1], |
screamer | 0:7a64fbb4069d | 328 | ip4_addr1(&netif->gw), |
screamer | 0:7a64fbb4069d | 329 | ip4_addr2(&netif->gw), |
screamer | 0:7a64fbb4069d | 330 | ip4_addr3(&netif->gw), |
screamer | 0:7a64fbb4069d | 331 | ip4_addr4(&netif->gw))); |
screamer | 0:7a64fbb4069d | 332 | } |
screamer | 0:7a64fbb4069d | 333 | |
screamer | 0:7a64fbb4069d | 334 | /** |
screamer | 0:7a64fbb4069d | 335 | * Change the netmask of a network interface |
screamer | 0:7a64fbb4069d | 336 | * |
screamer | 0:7a64fbb4069d | 337 | * @param netif the network interface to change |
screamer | 0:7a64fbb4069d | 338 | * @param netmask the new netmask |
screamer | 0:7a64fbb4069d | 339 | * |
screamer | 0:7a64fbb4069d | 340 | * @note call netif_set_addr() if you also want to change ip address and |
screamer | 0:7a64fbb4069d | 341 | * default gateway |
screamer | 0:7a64fbb4069d | 342 | */ |
screamer | 0:7a64fbb4069d | 343 | void |
screamer | 0:7a64fbb4069d | 344 | netif_set_netmask(struct netif *netif, struct ip_addr *netmask) |
screamer | 0:7a64fbb4069d | 345 | { |
screamer | 0:7a64fbb4069d | 346 | snmp_delete_iprteidx_tree(0, netif); |
screamer | 0:7a64fbb4069d | 347 | /* set new netmask to netif */ |
screamer | 0:7a64fbb4069d | 348 | ip_addr_set(&(netif->netmask), netmask); |
screamer | 0:7a64fbb4069d | 349 | snmp_insert_iprteidx_tree(0, netif); |
screamer | 0:7a64fbb4069d | 350 | 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", |
screamer | 0:7a64fbb4069d | 351 | netif->name[0], netif->name[1], |
screamer | 0:7a64fbb4069d | 352 | ip4_addr1(&netif->netmask), |
screamer | 0:7a64fbb4069d | 353 | ip4_addr2(&netif->netmask), |
screamer | 0:7a64fbb4069d | 354 | ip4_addr3(&netif->netmask), |
screamer | 0:7a64fbb4069d | 355 | ip4_addr4(&netif->netmask))); |
screamer | 0:7a64fbb4069d | 356 | } |
screamer | 0:7a64fbb4069d | 357 | |
screamer | 0:7a64fbb4069d | 358 | /** |
screamer | 0:7a64fbb4069d | 359 | * Set a network interface as the default network interface |
screamer | 0:7a64fbb4069d | 360 | * (used to output all packets for which no specific route is found) |
screamer | 0:7a64fbb4069d | 361 | * |
screamer | 0:7a64fbb4069d | 362 | * @param netif the default network interface |
screamer | 0:7a64fbb4069d | 363 | */ |
screamer | 0:7a64fbb4069d | 364 | void |
screamer | 0:7a64fbb4069d | 365 | netif_set_default(struct netif *netif) |
screamer | 0:7a64fbb4069d | 366 | { |
screamer | 0:7a64fbb4069d | 367 | if (netif == NULL) |
screamer | 0:7a64fbb4069d | 368 | { |
screamer | 0:7a64fbb4069d | 369 | /* remove default route */ |
screamer | 0:7a64fbb4069d | 370 | snmp_delete_iprteidx_tree(1, netif); |
screamer | 0:7a64fbb4069d | 371 | } |
screamer | 0:7a64fbb4069d | 372 | else |
screamer | 0:7a64fbb4069d | 373 | { |
screamer | 0:7a64fbb4069d | 374 | /* install default route */ |
screamer | 0:7a64fbb4069d | 375 | snmp_insert_iprteidx_tree(1, netif); |
screamer | 0:7a64fbb4069d | 376 | } |
screamer | 0:7a64fbb4069d | 377 | netif_default = netif; |
screamer | 0:7a64fbb4069d | 378 | LWIP_DEBUGF(NETIF_DEBUG, ("netif: setting default interface %c%c\n", |
screamer | 0:7a64fbb4069d | 379 | netif ? netif->name[0] : '\'', netif ? netif->name[1] : '\'')); |
screamer | 0:7a64fbb4069d | 380 | } |
screamer | 0:7a64fbb4069d | 381 | |
screamer | 0:7a64fbb4069d | 382 | /** |
screamer | 0:7a64fbb4069d | 383 | * Bring an interface up, available for processing |
screamer | 0:7a64fbb4069d | 384 | * traffic. |
screamer | 0:7a64fbb4069d | 385 | * |
screamer | 0:7a64fbb4069d | 386 | * @note: Enabling DHCP on a down interface will make it come |
screamer | 0:7a64fbb4069d | 387 | * up once configured. |
screamer | 0:7a64fbb4069d | 388 | * |
screamer | 0:7a64fbb4069d | 389 | * @see dhcp_start() |
screamer | 0:7a64fbb4069d | 390 | */ |
screamer | 0:7a64fbb4069d | 391 | void netif_set_up(struct netif *netif) |
screamer | 0:7a64fbb4069d | 392 | { |
screamer | 0:7a64fbb4069d | 393 | if ( !(netif->flags & NETIF_FLAG_UP )) { |
screamer | 0:7a64fbb4069d | 394 | netif->flags |= NETIF_FLAG_UP; |
screamer | 0:7a64fbb4069d | 395 | |
screamer | 0:7a64fbb4069d | 396 | #if LWIP_SNMP |
screamer | 0:7a64fbb4069d | 397 | snmp_get_sysuptime(&netif->ts); |
screamer | 0:7a64fbb4069d | 398 | #endif /* LWIP_SNMP */ |
screamer | 0:7a64fbb4069d | 399 | |
screamer | 0:7a64fbb4069d | 400 | NETIF_LINK_CALLBACK(netif); |
screamer | 0:7a64fbb4069d | 401 | NETIF_STATUS_CALLBACK(netif); |
screamer | 0:7a64fbb4069d | 402 | |
screamer | 0:7a64fbb4069d | 403 | #if LWIP_ARP |
screamer | 0:7a64fbb4069d | 404 | /** For Ethernet network interfaces, we would like to send a |
screamer | 0:7a64fbb4069d | 405 | * "gratuitous ARP"; this is an ARP packet sent by a node in order |
screamer | 0:7a64fbb4069d | 406 | * to spontaneously cause other nodes to update an entry in their |
screamer | 0:7a64fbb4069d | 407 | * ARP cache. From RFC 3220 "IP Mobility Support for IPv4" section 4.6. |
screamer | 0:7a64fbb4069d | 408 | */ |
screamer | 0:7a64fbb4069d | 409 | if (netif->flags & NETIF_FLAG_ETHARP) { |
screamer | 0:7a64fbb4069d | 410 | etharp_query(netif, &(netif->ip_addr), (struct pbuf *)(NULL)); |
screamer | 0:7a64fbb4069d | 411 | } |
screamer | 0:7a64fbb4069d | 412 | #endif /* LWIP_ARP */ |
screamer | 0:7a64fbb4069d | 413 | |
screamer | 0:7a64fbb4069d | 414 | } |
screamer | 0:7a64fbb4069d | 415 | } |
screamer | 0:7a64fbb4069d | 416 | |
screamer | 0:7a64fbb4069d | 417 | /** |
screamer | 0:7a64fbb4069d | 418 | * Bring an interface down, disabling any traffic processing. |
screamer | 0:7a64fbb4069d | 419 | * |
screamer | 0:7a64fbb4069d | 420 | * @note: Enabling DHCP on a down interface will make it come |
screamer | 0:7a64fbb4069d | 421 | * up once configured. |
screamer | 0:7a64fbb4069d | 422 | * |
screamer | 0:7a64fbb4069d | 423 | * @see dhcp_start() |
screamer | 0:7a64fbb4069d | 424 | */ |
screamer | 0:7a64fbb4069d | 425 | void netif_set_down(struct netif *netif) |
screamer | 0:7a64fbb4069d | 426 | { |
screamer | 0:7a64fbb4069d | 427 | if ( netif->flags & NETIF_FLAG_UP ) |
screamer | 0:7a64fbb4069d | 428 | { |
screamer | 0:7a64fbb4069d | 429 | netif->flags &= ~NETIF_FLAG_UP; |
screamer | 0:7a64fbb4069d | 430 | #if LWIP_SNMP |
screamer | 0:7a64fbb4069d | 431 | snmp_get_sysuptime(&netif->ts); |
screamer | 0:7a64fbb4069d | 432 | #endif |
screamer | 0:7a64fbb4069d | 433 | |
screamer | 0:7a64fbb4069d | 434 | NETIF_LINK_CALLBACK(netif); |
screamer | 0:7a64fbb4069d | 435 | NETIF_STATUS_CALLBACK(netif); |
screamer | 0:7a64fbb4069d | 436 | } |
screamer | 0:7a64fbb4069d | 437 | } |
screamer | 0:7a64fbb4069d | 438 | |
screamer | 0:7a64fbb4069d | 439 | /** |
screamer | 0:7a64fbb4069d | 440 | * Ask if an interface is up |
screamer | 0:7a64fbb4069d | 441 | */ |
screamer | 0:7a64fbb4069d | 442 | u8_t netif_is_up(struct netif *netif) |
screamer | 0:7a64fbb4069d | 443 | { |
screamer | 0:7a64fbb4069d | 444 | return (netif->flags & NETIF_FLAG_UP)?1:0; |
screamer | 0:7a64fbb4069d | 445 | } |
screamer | 0:7a64fbb4069d | 446 | |
screamer | 0:7a64fbb4069d | 447 | #if LWIP_NETIF_STATUS_CALLBACK |
screamer | 0:7a64fbb4069d | 448 | /** |
screamer | 0:7a64fbb4069d | 449 | * Set callback to be called when interface is brought up/down |
screamer | 0:7a64fbb4069d | 450 | */ |
screamer | 0:7a64fbb4069d | 451 | void netif_set_status_callback(struct netif *netif, void (* status_callback)(struct netif *netif )) |
screamer | 0:7a64fbb4069d | 452 | { |
screamer | 0:7a64fbb4069d | 453 | if ( netif ) |
screamer | 0:7a64fbb4069d | 454 | netif->status_callback = status_callback; |
screamer | 0:7a64fbb4069d | 455 | } |
screamer | 0:7a64fbb4069d | 456 | #endif /* LWIP_NETIF_STATUS_CALLBACK */ |
screamer | 0:7a64fbb4069d | 457 | |
screamer | 0:7a64fbb4069d | 458 | #if LWIP_NETIF_LINK_CALLBACK |
screamer | 0:7a64fbb4069d | 459 | /** |
screamer | 0:7a64fbb4069d | 460 | * Called by a driver when its link goes up |
screamer | 0:7a64fbb4069d | 461 | */ |
screamer | 0:7a64fbb4069d | 462 | void netif_set_link_up(struct netif *netif ) |
screamer | 0:7a64fbb4069d | 463 | { |
screamer | 0:7a64fbb4069d | 464 | netif->flags |= NETIF_FLAG_LINK_UP; |
screamer | 0:7a64fbb4069d | 465 | |
screamer | 0:7a64fbb4069d | 466 | #if LWIP_ARP |
screamer | 0:7a64fbb4069d | 467 | /** For Ethernet network interfaces, we would like to send a |
screamer | 0:7a64fbb4069d | 468 | * "gratuitous ARP"; this is an ARP packet sent by a node in order |
screamer | 0:7a64fbb4069d | 469 | * to spontaneously cause other nodes to update an entry in their |
screamer | 0:7a64fbb4069d | 470 | * ARP cache. From RFC 3220 "IP Mobility Support for IPv4" section 4.6. |
screamer | 0:7a64fbb4069d | 471 | */ |
screamer | 0:7a64fbb4069d | 472 | if (netif->flags & NETIF_FLAG_ETHARP) { |
screamer | 0:7a64fbb4069d | 473 | etharp_query(netif, &(netif->ip_addr), NULL); |
screamer | 0:7a64fbb4069d | 474 | } |
screamer | 0:7a64fbb4069d | 475 | #endif /* LWIP_ARP */ |
screamer | 0:7a64fbb4069d | 476 | |
screamer | 0:7a64fbb4069d | 477 | #if LWIP_IGMP |
screamer | 0:7a64fbb4069d | 478 | /* resend IGMP memberships */ |
screamer | 0:7a64fbb4069d | 479 | if (netif->flags & NETIF_FLAG_IGMP) { |
screamer | 0:7a64fbb4069d | 480 | igmp_report_groups( netif); |
screamer | 0:7a64fbb4069d | 481 | } |
screamer | 0:7a64fbb4069d | 482 | #endif /* LWIP_IGMP */ |
screamer | 0:7a64fbb4069d | 483 | |
screamer | 0:7a64fbb4069d | 484 | NETIF_LINK_CALLBACK(netif); |
screamer | 0:7a64fbb4069d | 485 | } |
screamer | 0:7a64fbb4069d | 486 | |
screamer | 0:7a64fbb4069d | 487 | /** |
screamer | 0:7a64fbb4069d | 488 | * Called by a driver when its link goes down |
screamer | 0:7a64fbb4069d | 489 | */ |
screamer | 0:7a64fbb4069d | 490 | void netif_set_link_down(struct netif *netif ) |
screamer | 0:7a64fbb4069d | 491 | { |
screamer | 0:7a64fbb4069d | 492 | netif->flags &= ~NETIF_FLAG_LINK_UP; |
screamer | 0:7a64fbb4069d | 493 | NETIF_LINK_CALLBACK(netif); |
screamer | 0:7a64fbb4069d | 494 | } |
screamer | 0:7a64fbb4069d | 495 | |
screamer | 0:7a64fbb4069d | 496 | /** |
screamer | 0:7a64fbb4069d | 497 | * Ask if a link is up |
screamer | 0:7a64fbb4069d | 498 | */ |
screamer | 0:7a64fbb4069d | 499 | u8_t netif_is_link_up(struct netif *netif) |
screamer | 0:7a64fbb4069d | 500 | { |
screamer | 0:7a64fbb4069d | 501 | return (netif->flags & NETIF_FLAG_LINK_UP) ? 1 : 0; |
screamer | 0:7a64fbb4069d | 502 | } |
screamer | 0:7a64fbb4069d | 503 | |
screamer | 0:7a64fbb4069d | 504 | /** |
screamer | 0:7a64fbb4069d | 505 | * Set callback to be called when link is brought up/down |
screamer | 0:7a64fbb4069d | 506 | */ |
screamer | 0:7a64fbb4069d | 507 | void netif_set_link_callback(struct netif *netif, void (* link_callback)(struct netif *netif )) |
screamer | 0:7a64fbb4069d | 508 | { |
screamer | 0:7a64fbb4069d | 509 | if (netif) { |
screamer | 0:7a64fbb4069d | 510 | netif->link_callback = link_callback; |
screamer | 0:7a64fbb4069d | 511 | } |
screamer | 0:7a64fbb4069d | 512 | } |
screamer | 0:7a64fbb4069d | 513 | #endif /* LWIP_NETIF_LINK_CALLBACK */ |
screamer | 0:7a64fbb4069d | 514 | |
screamer | 0:7a64fbb4069d | 515 | #if ENABLE_LOOPBACK |
screamer | 0:7a64fbb4069d | 516 | /** |
screamer | 0:7a64fbb4069d | 517 | * Send an IP packet to be received on the same netif (loopif-like). |
screamer | 0:7a64fbb4069d | 518 | * The pbuf is simply copied and handed back to netif->input. |
screamer | 0:7a64fbb4069d | 519 | * In multithreaded mode, this is done directly since netif->input must put |
screamer | 0:7a64fbb4069d | 520 | * the packet on a queue. |
screamer | 0:7a64fbb4069d | 521 | * In callback mode, the packet is put on an internal queue and is fed to |
screamer | 0:7a64fbb4069d | 522 | * netif->input by netif_poll(). |
screamer | 0:7a64fbb4069d | 523 | * |
screamer | 0:7a64fbb4069d | 524 | * @param netif the lwip network interface structure |
screamer | 0:7a64fbb4069d | 525 | * @param p the (IP) packet to 'send' |
screamer | 0:7a64fbb4069d | 526 | * @param ipaddr the ip address to send the packet to (not used) |
screamer | 0:7a64fbb4069d | 527 | * @return ERR_OK if the packet has been sent |
screamer | 0:7a64fbb4069d | 528 | * ERR_MEM if the pbuf used to copy the packet couldn't be allocated |
screamer | 0:7a64fbb4069d | 529 | */ |
screamer | 0:7a64fbb4069d | 530 | err_t |
screamer | 0:7a64fbb4069d | 531 | netif_loop_output(struct netif *netif, struct pbuf *p, |
screamer | 0:7a64fbb4069d | 532 | struct ip_addr *ipaddr) |
screamer | 0:7a64fbb4069d | 533 | { |
screamer | 0:7a64fbb4069d | 534 | struct pbuf *r; |
screamer | 0:7a64fbb4069d | 535 | err_t err; |
screamer | 0:7a64fbb4069d | 536 | struct pbuf *last; |
screamer | 0:7a64fbb4069d | 537 | #if LWIP_LOOPBACK_MAX_PBUFS |
screamer | 0:7a64fbb4069d | 538 | u8_t clen = 0; |
screamer | 0:7a64fbb4069d | 539 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */ |
screamer | 0:7a64fbb4069d | 540 | SYS_ARCH_DECL_PROTECT(lev); |
screamer | 0:7a64fbb4069d | 541 | LWIP_UNUSED_ARG(ipaddr); |
screamer | 0:7a64fbb4069d | 542 | |
screamer | 0:7a64fbb4069d | 543 | /* Allocate a new pbuf */ |
screamer | 0:7a64fbb4069d | 544 | r = pbuf_alloc(PBUF_LINK, p->tot_len, PBUF_RAM); |
screamer | 0:7a64fbb4069d | 545 | if (r == NULL) { |
screamer | 0:7a64fbb4069d | 546 | return ERR_MEM; |
screamer | 0:7a64fbb4069d | 547 | } |
screamer | 0:7a64fbb4069d | 548 | #if LWIP_LOOPBACK_MAX_PBUFS |
screamer | 0:7a64fbb4069d | 549 | clen = pbuf_clen(r); |
screamer | 0:7a64fbb4069d | 550 | /* check for overflow or too many pbuf on queue */ |
screamer | 0:7a64fbb4069d | 551 | if(((netif->loop_cnt_current + clen) < netif->loop_cnt_current) || |
screamer | 0:7a64fbb4069d | 552 | ((netif->loop_cnt_current + clen) > LWIP_LOOPBACK_MAX_PBUFS)) { |
screamer | 0:7a64fbb4069d | 553 | pbuf_free(r); |
screamer | 0:7a64fbb4069d | 554 | r = NULL; |
screamer | 0:7a64fbb4069d | 555 | return ERR_MEM; |
screamer | 0:7a64fbb4069d | 556 | } |
screamer | 0:7a64fbb4069d | 557 | netif->loop_cnt_current += clen; |
screamer | 0:7a64fbb4069d | 558 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */ |
screamer | 0:7a64fbb4069d | 559 | |
screamer | 0:7a64fbb4069d | 560 | /* Copy the whole pbuf queue p into the single pbuf r */ |
screamer | 0:7a64fbb4069d | 561 | if ((err = pbuf_copy(r, p)) != ERR_OK) { |
screamer | 0:7a64fbb4069d | 562 | pbuf_free(r); |
screamer | 0:7a64fbb4069d | 563 | r = NULL; |
screamer | 0:7a64fbb4069d | 564 | return err; |
screamer | 0:7a64fbb4069d | 565 | } |
screamer | 0:7a64fbb4069d | 566 | |
screamer | 0:7a64fbb4069d | 567 | /* Put the packet on a linked list which gets emptied through calling |
screamer | 0:7a64fbb4069d | 568 | netif_poll(). */ |
screamer | 0:7a64fbb4069d | 569 | |
screamer | 0:7a64fbb4069d | 570 | /* let last point to the last pbuf in chain r */ |
screamer | 0:7a64fbb4069d | 571 | for (last = r; last->next != NULL; last = last->next); |
screamer | 0:7a64fbb4069d | 572 | |
screamer | 0:7a64fbb4069d | 573 | SYS_ARCH_PROTECT(lev); |
screamer | 0:7a64fbb4069d | 574 | if(netif->loop_first != NULL) { |
screamer | 0:7a64fbb4069d | 575 | LWIP_ASSERT("if first != NULL, last must also be != NULL", netif->loop_last != NULL); |
screamer | 0:7a64fbb4069d | 576 | netif->loop_last->next = r; |
screamer | 0:7a64fbb4069d | 577 | netif->loop_last = last; |
screamer | 0:7a64fbb4069d | 578 | } else { |
screamer | 0:7a64fbb4069d | 579 | netif->loop_first = r; |
screamer | 0:7a64fbb4069d | 580 | netif->loop_last = last; |
screamer | 0:7a64fbb4069d | 581 | } |
screamer | 0:7a64fbb4069d | 582 | SYS_ARCH_UNPROTECT(lev); |
screamer | 0:7a64fbb4069d | 583 | |
screamer | 0:7a64fbb4069d | 584 | #if LWIP_NETIF_LOOPBACK_MULTITHREADING |
screamer | 0:7a64fbb4069d | 585 | /* For multithreading environment, schedule a call to netif_poll */ |
screamer | 0:7a64fbb4069d | 586 | tcpip_callback(netif_poll, netif); |
screamer | 0:7a64fbb4069d | 587 | #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */ |
screamer | 0:7a64fbb4069d | 588 | |
screamer | 0:7a64fbb4069d | 589 | return ERR_OK; |
screamer | 0:7a64fbb4069d | 590 | } |
screamer | 0:7a64fbb4069d | 591 | |
screamer | 0:7a64fbb4069d | 592 | /** |
screamer | 0:7a64fbb4069d | 593 | * Call netif_poll() in the main loop of your application. This is to prevent |
screamer | 0:7a64fbb4069d | 594 | * reentering non-reentrant functions like tcp_input(). Packets passed to |
screamer | 0:7a64fbb4069d | 595 | * netif_loop_output() are put on a list that is passed to netif->input() by |
screamer | 0:7a64fbb4069d | 596 | * netif_poll(). |
screamer | 0:7a64fbb4069d | 597 | */ |
screamer | 0:7a64fbb4069d | 598 | void |
screamer | 0:7a64fbb4069d | 599 | netif_poll(struct netif *netif) |
screamer | 0:7a64fbb4069d | 600 | { |
screamer | 0:7a64fbb4069d | 601 | struct pbuf *in; |
screamer | 0:7a64fbb4069d | 602 | SYS_ARCH_DECL_PROTECT(lev); |
screamer | 0:7a64fbb4069d | 603 | |
screamer | 0:7a64fbb4069d | 604 | do { |
screamer | 0:7a64fbb4069d | 605 | /* Get a packet from the list. With SYS_LIGHTWEIGHT_PROT=1, this is protected */ |
screamer | 0:7a64fbb4069d | 606 | SYS_ARCH_PROTECT(lev); |
screamer | 0:7a64fbb4069d | 607 | in = netif->loop_first; |
screamer | 0:7a64fbb4069d | 608 | if(in != NULL) { |
screamer | 0:7a64fbb4069d | 609 | struct pbuf *in_end = in; |
screamer | 0:7a64fbb4069d | 610 | #if LWIP_LOOPBACK_MAX_PBUFS |
screamer | 0:7a64fbb4069d | 611 | u8_t clen = pbuf_clen(in); |
screamer | 0:7a64fbb4069d | 612 | /* adjust the number of pbufs on queue */ |
screamer | 0:7a64fbb4069d | 613 | LWIP_ASSERT("netif->loop_cnt_current underflow", |
screamer | 0:7a64fbb4069d | 614 | ((netif->loop_cnt_current - clen) < netif->loop_cnt_current)); |
screamer | 0:7a64fbb4069d | 615 | netif->loop_cnt_current -= clen; |
screamer | 0:7a64fbb4069d | 616 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */ |
screamer | 0:7a64fbb4069d | 617 | while(in_end->len != in_end->tot_len) { |
screamer | 0:7a64fbb4069d | 618 | LWIP_ASSERT("bogus pbuf: len != tot_len but next == NULL!", in_end->next != NULL); |
screamer | 0:7a64fbb4069d | 619 | in_end = in_end->next; |
screamer | 0:7a64fbb4069d | 620 | } |
screamer | 0:7a64fbb4069d | 621 | /* 'in_end' now points to the last pbuf from 'in' */ |
screamer | 0:7a64fbb4069d | 622 | if(in_end == netif->loop_last) { |
screamer | 0:7a64fbb4069d | 623 | /* this was the last pbuf in the list */ |
screamer | 0:7a64fbb4069d | 624 | netif->loop_first = netif->loop_last = NULL; |
screamer | 0:7a64fbb4069d | 625 | } else { |
screamer | 0:7a64fbb4069d | 626 | /* pop the pbuf off the list */ |
screamer | 0:7a64fbb4069d | 627 | netif->loop_first = in_end->next; |
screamer | 0:7a64fbb4069d | 628 | LWIP_ASSERT("should not be null since first != last!", netif->loop_first != NULL); |
screamer | 0:7a64fbb4069d | 629 | } |
screamer | 0:7a64fbb4069d | 630 | /* De-queue the pbuf from its successors on the 'loop_' list. */ |
screamer | 0:7a64fbb4069d | 631 | in_end->next = NULL; |
screamer | 0:7a64fbb4069d | 632 | } |
screamer | 0:7a64fbb4069d | 633 | SYS_ARCH_UNPROTECT(lev); |
screamer | 0:7a64fbb4069d | 634 | |
screamer | 0:7a64fbb4069d | 635 | if(in != NULL) { |
screamer | 0:7a64fbb4069d | 636 | /* loopback packets are always IP packets! */ |
screamer | 0:7a64fbb4069d | 637 | if(ip_input(in, netif) != ERR_OK) { |
screamer | 0:7a64fbb4069d | 638 | pbuf_free(in); |
screamer | 0:7a64fbb4069d | 639 | } |
screamer | 0:7a64fbb4069d | 640 | /* Don't reference the packet any more! */ |
screamer | 0:7a64fbb4069d | 641 | in = NULL; |
screamer | 0:7a64fbb4069d | 642 | } |
screamer | 0:7a64fbb4069d | 643 | /* go on while there is a packet on the list */ |
screamer | 0:7a64fbb4069d | 644 | } while(netif->loop_first != NULL); |
screamer | 0:7a64fbb4069d | 645 | } |
screamer | 0:7a64fbb4069d | 646 | |
screamer | 0:7a64fbb4069d | 647 | #if !LWIP_NETIF_LOOPBACK_MULTITHREADING |
screamer | 0:7a64fbb4069d | 648 | /** |
screamer | 0:7a64fbb4069d | 649 | * Calls netif_poll() for every netif on the netif_list. |
screamer | 0:7a64fbb4069d | 650 | */ |
screamer | 0:7a64fbb4069d | 651 | void |
screamer | 0:7a64fbb4069d | 652 | netif_poll_all(void) |
screamer | 0:7a64fbb4069d | 653 | { |
screamer | 0:7a64fbb4069d | 654 | struct netif *netif = netif_list; |
screamer | 0:7a64fbb4069d | 655 | /* loop through netifs */ |
screamer | 0:7a64fbb4069d | 656 | while (netif != NULL) { |
screamer | 0:7a64fbb4069d | 657 | netif_poll(netif); |
screamer | 0:7a64fbb4069d | 658 | /* proceed to next network interface */ |
screamer | 0:7a64fbb4069d | 659 | netif = netif->next; |
screamer | 0:7a64fbb4069d | 660 | } |
screamer | 0:7a64fbb4069d | 661 | } |
screamer | 0:7a64fbb4069d | 662 | #endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */ |
screamer | 0:7a64fbb4069d | 663 | #endif /* ENABLE_LOOPBACK */ |