创建mbed
Dependencies: EthernetInterface SDFileSystem mbed-rtos mbed
EthernetInterface/lwip/core/netif.c@1:6465a3f5c58a, 2018-03-06 (annotated)
- Committer:
- sunyiming
- Date:
- Tue Mar 06 08:53:46 2018 +0000
- Revision:
- 1:6465a3f5c58a
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Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
sunyiming | 1:6465a3f5c58a | 1 | /** |
sunyiming | 1:6465a3f5c58a | 2 | * @file |
sunyiming | 1:6465a3f5c58a | 3 | * lwIP network interface abstraction |
sunyiming | 1:6465a3f5c58a | 4 | * |
sunyiming | 1:6465a3f5c58a | 5 | */ |
sunyiming | 1:6465a3f5c58a | 6 | |
sunyiming | 1:6465a3f5c58a | 7 | /* |
sunyiming | 1:6465a3f5c58a | 8 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science. |
sunyiming | 1:6465a3f5c58a | 9 | * All rights reserved. |
sunyiming | 1:6465a3f5c58a | 10 | * |
sunyiming | 1:6465a3f5c58a | 11 | * Redistribution and use in source and binary forms, with or without modification, |
sunyiming | 1:6465a3f5c58a | 12 | * are permitted provided that the following conditions are met: |
sunyiming | 1:6465a3f5c58a | 13 | * |
sunyiming | 1:6465a3f5c58a | 14 | * 1. Redistributions of source code must retain the above copyright notice, |
sunyiming | 1:6465a3f5c58a | 15 | * this list of conditions and the following disclaimer. |
sunyiming | 1:6465a3f5c58a | 16 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
sunyiming | 1:6465a3f5c58a | 17 | * this list of conditions and the following disclaimer in the documentation |
sunyiming | 1:6465a3f5c58a | 18 | * and/or other materials provided with the distribution. |
sunyiming | 1:6465a3f5c58a | 19 | * 3. The name of the author may not be used to endorse or promote products |
sunyiming | 1:6465a3f5c58a | 20 | * derived from this software without specific prior written permission. |
sunyiming | 1:6465a3f5c58a | 21 | * |
sunyiming | 1:6465a3f5c58a | 22 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
sunyiming | 1:6465a3f5c58a | 23 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
sunyiming | 1:6465a3f5c58a | 24 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
sunyiming | 1:6465a3f5c58a | 25 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
sunyiming | 1:6465a3f5c58a | 26 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
sunyiming | 1:6465a3f5c58a | 27 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
sunyiming | 1:6465a3f5c58a | 28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
sunyiming | 1:6465a3f5c58a | 29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
sunyiming | 1:6465a3f5c58a | 30 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
sunyiming | 1:6465a3f5c58a | 31 | * OF SUCH DAMAGE. |
sunyiming | 1:6465a3f5c58a | 32 | * |
sunyiming | 1:6465a3f5c58a | 33 | * This file is part of the lwIP TCP/IP stack. |
sunyiming | 1:6465a3f5c58a | 34 | * |
sunyiming | 1:6465a3f5c58a | 35 | * Author: Adam Dunkels <adam@sics.se> |
sunyiming | 1:6465a3f5c58a | 36 | * |
sunyiming | 1:6465a3f5c58a | 37 | */ |
sunyiming | 1:6465a3f5c58a | 38 | |
sunyiming | 1:6465a3f5c58a | 39 | #include "lwip/opt.h" |
sunyiming | 1:6465a3f5c58a | 40 | |
sunyiming | 1:6465a3f5c58a | 41 | #include "lwip/def.h" |
sunyiming | 1:6465a3f5c58a | 42 | #include "lwip/ip_addr.h" |
sunyiming | 1:6465a3f5c58a | 43 | #include "lwip/netif.h" |
sunyiming | 1:6465a3f5c58a | 44 | #include "lwip/tcp_impl.h" |
sunyiming | 1:6465a3f5c58a | 45 | #include "lwip/snmp.h" |
sunyiming | 1:6465a3f5c58a | 46 | #include "lwip/igmp.h" |
sunyiming | 1:6465a3f5c58a | 47 | #include "netif/etharp.h" |
sunyiming | 1:6465a3f5c58a | 48 | #include "lwip/stats.h" |
sunyiming | 1:6465a3f5c58a | 49 | #if ENABLE_LOOPBACK |
sunyiming | 1:6465a3f5c58a | 50 | #include "lwip/sys.h" |
sunyiming | 1:6465a3f5c58a | 51 | #if LWIP_NETIF_LOOPBACK_MULTITHREADING |
sunyiming | 1:6465a3f5c58a | 52 | #include "lwip/tcpip.h" |
sunyiming | 1:6465a3f5c58a | 53 | #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */ |
sunyiming | 1:6465a3f5c58a | 54 | #endif /* ENABLE_LOOPBACK */ |
sunyiming | 1:6465a3f5c58a | 55 | |
sunyiming | 1:6465a3f5c58a | 56 | #if LWIP_AUTOIP |
sunyiming | 1:6465a3f5c58a | 57 | #include "lwip/autoip.h" |
sunyiming | 1:6465a3f5c58a | 58 | #endif /* LWIP_AUTOIP */ |
sunyiming | 1:6465a3f5c58a | 59 | #if LWIP_DHCP |
sunyiming | 1:6465a3f5c58a | 60 | #include "lwip/dhcp.h" |
sunyiming | 1:6465a3f5c58a | 61 | #endif /* LWIP_DHCP */ |
sunyiming | 1:6465a3f5c58a | 62 | |
sunyiming | 1:6465a3f5c58a | 63 | #if LWIP_NETIF_STATUS_CALLBACK |
sunyiming | 1:6465a3f5c58a | 64 | #define NETIF_STATUS_CALLBACK(n) do{ if (n->status_callback) { (n->status_callback)(n); }}while(0) |
sunyiming | 1:6465a3f5c58a | 65 | #else |
sunyiming | 1:6465a3f5c58a | 66 | #define NETIF_STATUS_CALLBACK(n) |
sunyiming | 1:6465a3f5c58a | 67 | #endif /* LWIP_NETIF_STATUS_CALLBACK */ |
sunyiming | 1:6465a3f5c58a | 68 | |
sunyiming | 1:6465a3f5c58a | 69 | #if LWIP_NETIF_LINK_CALLBACK |
sunyiming | 1:6465a3f5c58a | 70 | #define NETIF_LINK_CALLBACK(n) do{ if (n->link_callback) { (n->link_callback)(n); }}while(0) |
sunyiming | 1:6465a3f5c58a | 71 | #else |
sunyiming | 1:6465a3f5c58a | 72 | #define NETIF_LINK_CALLBACK(n) |
sunyiming | 1:6465a3f5c58a | 73 | #endif /* LWIP_NETIF_LINK_CALLBACK */ |
sunyiming | 1:6465a3f5c58a | 74 | |
sunyiming | 1:6465a3f5c58a | 75 | struct netif *netif_list; |
sunyiming | 1:6465a3f5c58a | 76 | struct netif *netif_default; |
sunyiming | 1:6465a3f5c58a | 77 | |
sunyiming | 1:6465a3f5c58a | 78 | #if LWIP_HAVE_LOOPIF |
sunyiming | 1:6465a3f5c58a | 79 | static struct netif loop_netif; |
sunyiming | 1:6465a3f5c58a | 80 | |
sunyiming | 1:6465a3f5c58a | 81 | /** |
sunyiming | 1:6465a3f5c58a | 82 | * Initialize a lwip network interface structure for a loopback interface |
sunyiming | 1:6465a3f5c58a | 83 | * |
sunyiming | 1:6465a3f5c58a | 84 | * @param netif the lwip network interface structure for this loopif |
sunyiming | 1:6465a3f5c58a | 85 | * @return ERR_OK if the loopif is initialized |
sunyiming | 1:6465a3f5c58a | 86 | * ERR_MEM if private data couldn't be allocated |
sunyiming | 1:6465a3f5c58a | 87 | */ |
sunyiming | 1:6465a3f5c58a | 88 | static err_t |
sunyiming | 1:6465a3f5c58a | 89 | netif_loopif_init(struct netif *netif) |
sunyiming | 1:6465a3f5c58a | 90 | { |
sunyiming | 1:6465a3f5c58a | 91 | /* initialize the snmp variables and counters inside the struct netif |
sunyiming | 1:6465a3f5c58a | 92 | * ifSpeed: no assumption can be made! |
sunyiming | 1:6465a3f5c58a | 93 | */ |
sunyiming | 1:6465a3f5c58a | 94 | NETIF_INIT_SNMP(netif, snmp_ifType_softwareLoopback, 0); |
sunyiming | 1:6465a3f5c58a | 95 | |
sunyiming | 1:6465a3f5c58a | 96 | netif->name[0] = 'l'; |
sunyiming | 1:6465a3f5c58a | 97 | netif->name[1] = 'o'; |
sunyiming | 1:6465a3f5c58a | 98 | netif->output = netif_loop_output; |
sunyiming | 1:6465a3f5c58a | 99 | return ERR_OK; |
sunyiming | 1:6465a3f5c58a | 100 | } |
sunyiming | 1:6465a3f5c58a | 101 | #endif /* LWIP_HAVE_LOOPIF */ |
sunyiming | 1:6465a3f5c58a | 102 | |
sunyiming | 1:6465a3f5c58a | 103 | void |
sunyiming | 1:6465a3f5c58a | 104 | netif_init(void) |
sunyiming | 1:6465a3f5c58a | 105 | { |
sunyiming | 1:6465a3f5c58a | 106 | #if LWIP_HAVE_LOOPIF |
sunyiming | 1:6465a3f5c58a | 107 | ip_addr_t loop_ipaddr, loop_netmask, loop_gw; |
sunyiming | 1:6465a3f5c58a | 108 | IP4_ADDR(&loop_gw, 127,0,0,1); |
sunyiming | 1:6465a3f5c58a | 109 | IP4_ADDR(&loop_ipaddr, 127,0,0,1); |
sunyiming | 1:6465a3f5c58a | 110 | IP4_ADDR(&loop_netmask, 255,0,0,0); |
sunyiming | 1:6465a3f5c58a | 111 | |
sunyiming | 1:6465a3f5c58a | 112 | #if NO_SYS |
sunyiming | 1:6465a3f5c58a | 113 | netif_add(&loop_netif, &loop_ipaddr, &loop_netmask, &loop_gw, NULL, netif_loopif_init, ip_input); |
sunyiming | 1:6465a3f5c58a | 114 | #else /* NO_SYS */ |
sunyiming | 1:6465a3f5c58a | 115 | netif_add(&loop_netif, &loop_ipaddr, &loop_netmask, &loop_gw, NULL, netif_loopif_init, tcpip_input); |
sunyiming | 1:6465a3f5c58a | 116 | #endif /* NO_SYS */ |
sunyiming | 1:6465a3f5c58a | 117 | netif_set_up(&loop_netif); |
sunyiming | 1:6465a3f5c58a | 118 | |
sunyiming | 1:6465a3f5c58a | 119 | #endif /* LWIP_HAVE_LOOPIF */ |
sunyiming | 1:6465a3f5c58a | 120 | } |
sunyiming | 1:6465a3f5c58a | 121 | |
sunyiming | 1:6465a3f5c58a | 122 | /** |
sunyiming | 1:6465a3f5c58a | 123 | * Add a network interface to the list of lwIP netifs. |
sunyiming | 1:6465a3f5c58a | 124 | * |
sunyiming | 1:6465a3f5c58a | 125 | * @param netif a pre-allocated netif structure |
sunyiming | 1:6465a3f5c58a | 126 | * @param ipaddr IP address for the new netif |
sunyiming | 1:6465a3f5c58a | 127 | * @param netmask network mask for the new netif |
sunyiming | 1:6465a3f5c58a | 128 | * @param gw default gateway IP address for the new netif |
sunyiming | 1:6465a3f5c58a | 129 | * @param state opaque data passed to the new netif |
sunyiming | 1:6465a3f5c58a | 130 | * @param init callback function that initializes the interface |
sunyiming | 1:6465a3f5c58a | 131 | * @param input callback function that is called to pass |
sunyiming | 1:6465a3f5c58a | 132 | * ingress packets up in the protocol layer stack. |
sunyiming | 1:6465a3f5c58a | 133 | * |
sunyiming | 1:6465a3f5c58a | 134 | * @return netif, or NULL if failed. |
sunyiming | 1:6465a3f5c58a | 135 | */ |
sunyiming | 1:6465a3f5c58a | 136 | struct netif * |
sunyiming | 1:6465a3f5c58a | 137 | netif_add(struct netif *netif, ip_addr_t *ipaddr, ip_addr_t *netmask, |
sunyiming | 1:6465a3f5c58a | 138 | ip_addr_t *gw, void *state, netif_init_fn init, netif_input_fn input) |
sunyiming | 1:6465a3f5c58a | 139 | { |
sunyiming | 1:6465a3f5c58a | 140 | static u8_t netifnum = 0; |
sunyiming | 1:6465a3f5c58a | 141 | |
sunyiming | 1:6465a3f5c58a | 142 | LWIP_ASSERT("No init function given", init != NULL); |
sunyiming | 1:6465a3f5c58a | 143 | |
sunyiming | 1:6465a3f5c58a | 144 | /* reset new interface configuration state */ |
sunyiming | 1:6465a3f5c58a | 145 | ip_addr_set_zero(&netif->ip_addr); |
sunyiming | 1:6465a3f5c58a | 146 | ip_addr_set_zero(&netif->netmask); |
sunyiming | 1:6465a3f5c58a | 147 | ip_addr_set_zero(&netif->gw); |
sunyiming | 1:6465a3f5c58a | 148 | netif->flags = 0; |
sunyiming | 1:6465a3f5c58a | 149 | #if LWIP_DHCP |
sunyiming | 1:6465a3f5c58a | 150 | /* netif not under DHCP control by default */ |
sunyiming | 1:6465a3f5c58a | 151 | netif->dhcp = NULL; |
sunyiming | 1:6465a3f5c58a | 152 | #endif /* LWIP_DHCP */ |
sunyiming | 1:6465a3f5c58a | 153 | #if LWIP_AUTOIP |
sunyiming | 1:6465a3f5c58a | 154 | /* netif not under AutoIP control by default */ |
sunyiming | 1:6465a3f5c58a | 155 | netif->autoip = NULL; |
sunyiming | 1:6465a3f5c58a | 156 | #endif /* LWIP_AUTOIP */ |
sunyiming | 1:6465a3f5c58a | 157 | #if LWIP_NETIF_STATUS_CALLBACK |
sunyiming | 1:6465a3f5c58a | 158 | netif->status_callback = NULL; |
sunyiming | 1:6465a3f5c58a | 159 | #endif /* LWIP_NETIF_STATUS_CALLBACK */ |
sunyiming | 1:6465a3f5c58a | 160 | #if LWIP_NETIF_LINK_CALLBACK |
sunyiming | 1:6465a3f5c58a | 161 | netif->link_callback = NULL; |
sunyiming | 1:6465a3f5c58a | 162 | #endif /* LWIP_NETIF_LINK_CALLBACK */ |
sunyiming | 1:6465a3f5c58a | 163 | #if LWIP_IGMP |
sunyiming | 1:6465a3f5c58a | 164 | netif->igmp_mac_filter = NULL; |
sunyiming | 1:6465a3f5c58a | 165 | #endif /* LWIP_IGMP */ |
sunyiming | 1:6465a3f5c58a | 166 | #if ENABLE_LOOPBACK |
sunyiming | 1:6465a3f5c58a | 167 | netif->loop_first = NULL; |
sunyiming | 1:6465a3f5c58a | 168 | netif->loop_last = NULL; |
sunyiming | 1:6465a3f5c58a | 169 | #endif /* ENABLE_LOOPBACK */ |
sunyiming | 1:6465a3f5c58a | 170 | |
sunyiming | 1:6465a3f5c58a | 171 | /* remember netif specific state information data */ |
sunyiming | 1:6465a3f5c58a | 172 | netif->state = state; |
sunyiming | 1:6465a3f5c58a | 173 | netif->num = netifnum++; |
sunyiming | 1:6465a3f5c58a | 174 | netif->input = input; |
sunyiming | 1:6465a3f5c58a | 175 | #if LWIP_NETIF_HWADDRHINT |
sunyiming | 1:6465a3f5c58a | 176 | netif->addr_hint = NULL; |
sunyiming | 1:6465a3f5c58a | 177 | #endif /* LWIP_NETIF_HWADDRHINT*/ |
sunyiming | 1:6465a3f5c58a | 178 | #if ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS |
sunyiming | 1:6465a3f5c58a | 179 | netif->loop_cnt_current = 0; |
sunyiming | 1:6465a3f5c58a | 180 | #endif /* ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS */ |
sunyiming | 1:6465a3f5c58a | 181 | |
sunyiming | 1:6465a3f5c58a | 182 | netif_set_addr(netif, ipaddr, netmask, gw); |
sunyiming | 1:6465a3f5c58a | 183 | |
sunyiming | 1:6465a3f5c58a | 184 | /* call user specified initialization function for netif */ |
sunyiming | 1:6465a3f5c58a | 185 | if (init(netif) != ERR_OK) { |
sunyiming | 1:6465a3f5c58a | 186 | return NULL; |
sunyiming | 1:6465a3f5c58a | 187 | } |
sunyiming | 1:6465a3f5c58a | 188 | |
sunyiming | 1:6465a3f5c58a | 189 | /* add this netif to the list */ |
sunyiming | 1:6465a3f5c58a | 190 | netif->next = netif_list; |
sunyiming | 1:6465a3f5c58a | 191 | netif_list = netif; |
sunyiming | 1:6465a3f5c58a | 192 | snmp_inc_iflist(); |
sunyiming | 1:6465a3f5c58a | 193 | |
sunyiming | 1:6465a3f5c58a | 194 | #if LWIP_IGMP |
sunyiming | 1:6465a3f5c58a | 195 | /* start IGMP processing */ |
sunyiming | 1:6465a3f5c58a | 196 | if (netif->flags & NETIF_FLAG_IGMP) { |
sunyiming | 1:6465a3f5c58a | 197 | igmp_start(netif); |
sunyiming | 1:6465a3f5c58a | 198 | } |
sunyiming | 1:6465a3f5c58a | 199 | #endif /* LWIP_IGMP */ |
sunyiming | 1:6465a3f5c58a | 200 | |
sunyiming | 1:6465a3f5c58a | 201 | LWIP_DEBUGF(NETIF_DEBUG, ("netif: added interface %c%c IP addr ", |
sunyiming | 1:6465a3f5c58a | 202 | netif->name[0], netif->name[1])); |
sunyiming | 1:6465a3f5c58a | 203 | ip_addr_debug_print(NETIF_DEBUG, ipaddr); |
sunyiming | 1:6465a3f5c58a | 204 | LWIP_DEBUGF(NETIF_DEBUG, (" netmask ")); |
sunyiming | 1:6465a3f5c58a | 205 | ip_addr_debug_print(NETIF_DEBUG, netmask); |
sunyiming | 1:6465a3f5c58a | 206 | LWIP_DEBUGF(NETIF_DEBUG, (" gw ")); |
sunyiming | 1:6465a3f5c58a | 207 | ip_addr_debug_print(NETIF_DEBUG, gw); |
sunyiming | 1:6465a3f5c58a | 208 | LWIP_DEBUGF(NETIF_DEBUG, ("\n")); |
sunyiming | 1:6465a3f5c58a | 209 | return netif; |
sunyiming | 1:6465a3f5c58a | 210 | } |
sunyiming | 1:6465a3f5c58a | 211 | |
sunyiming | 1:6465a3f5c58a | 212 | /** |
sunyiming | 1:6465a3f5c58a | 213 | * Change IP address configuration for a network interface (including netmask |
sunyiming | 1:6465a3f5c58a | 214 | * and default gateway). |
sunyiming | 1:6465a3f5c58a | 215 | * |
sunyiming | 1:6465a3f5c58a | 216 | * @param netif the network interface to change |
sunyiming | 1:6465a3f5c58a | 217 | * @param ipaddr the new IP address |
sunyiming | 1:6465a3f5c58a | 218 | * @param netmask the new netmask |
sunyiming | 1:6465a3f5c58a | 219 | * @param gw the new default gateway |
sunyiming | 1:6465a3f5c58a | 220 | */ |
sunyiming | 1:6465a3f5c58a | 221 | void |
sunyiming | 1:6465a3f5c58a | 222 | netif_set_addr(struct netif *netif, ip_addr_t *ipaddr, ip_addr_t *netmask, |
sunyiming | 1:6465a3f5c58a | 223 | ip_addr_t *gw) |
sunyiming | 1:6465a3f5c58a | 224 | { |
sunyiming | 1:6465a3f5c58a | 225 | netif_set_ipaddr(netif, ipaddr); |
sunyiming | 1:6465a3f5c58a | 226 | netif_set_netmask(netif, netmask); |
sunyiming | 1:6465a3f5c58a | 227 | netif_set_gw(netif, gw); |
sunyiming | 1:6465a3f5c58a | 228 | } |
sunyiming | 1:6465a3f5c58a | 229 | |
sunyiming | 1:6465a3f5c58a | 230 | /** |
sunyiming | 1:6465a3f5c58a | 231 | * Remove a network interface from the list of lwIP netifs. |
sunyiming | 1:6465a3f5c58a | 232 | * |
sunyiming | 1:6465a3f5c58a | 233 | * @param netif the network interface to remove |
sunyiming | 1:6465a3f5c58a | 234 | */ |
sunyiming | 1:6465a3f5c58a | 235 | void |
sunyiming | 1:6465a3f5c58a | 236 | netif_remove(struct netif *netif) |
sunyiming | 1:6465a3f5c58a | 237 | { |
sunyiming | 1:6465a3f5c58a | 238 | if (netif == NULL) { |
sunyiming | 1:6465a3f5c58a | 239 | return; |
sunyiming | 1:6465a3f5c58a | 240 | } |
sunyiming | 1:6465a3f5c58a | 241 | |
sunyiming | 1:6465a3f5c58a | 242 | #if LWIP_IGMP |
sunyiming | 1:6465a3f5c58a | 243 | /* stop IGMP processing */ |
sunyiming | 1:6465a3f5c58a | 244 | if (netif->flags & NETIF_FLAG_IGMP) { |
sunyiming | 1:6465a3f5c58a | 245 | igmp_stop(netif); |
sunyiming | 1:6465a3f5c58a | 246 | } |
sunyiming | 1:6465a3f5c58a | 247 | #endif /* LWIP_IGMP */ |
sunyiming | 1:6465a3f5c58a | 248 | if (netif_is_up(netif)) { |
sunyiming | 1:6465a3f5c58a | 249 | /* set netif down before removing (call callback function) */ |
sunyiming | 1:6465a3f5c58a | 250 | netif_set_down(netif); |
sunyiming | 1:6465a3f5c58a | 251 | } |
sunyiming | 1:6465a3f5c58a | 252 | |
sunyiming | 1:6465a3f5c58a | 253 | snmp_delete_ipaddridx_tree(netif); |
sunyiming | 1:6465a3f5c58a | 254 | |
sunyiming | 1:6465a3f5c58a | 255 | /* is it the first netif? */ |
sunyiming | 1:6465a3f5c58a | 256 | if (netif_list == netif) { |
sunyiming | 1:6465a3f5c58a | 257 | netif_list = netif->next; |
sunyiming | 1:6465a3f5c58a | 258 | } else { |
sunyiming | 1:6465a3f5c58a | 259 | /* look for netif further down the list */ |
sunyiming | 1:6465a3f5c58a | 260 | struct netif * tmpNetif; |
sunyiming | 1:6465a3f5c58a | 261 | for (tmpNetif = netif_list; tmpNetif != NULL; tmpNetif = tmpNetif->next) { |
sunyiming | 1:6465a3f5c58a | 262 | if (tmpNetif->next == netif) { |
sunyiming | 1:6465a3f5c58a | 263 | tmpNetif->next = netif->next; |
sunyiming | 1:6465a3f5c58a | 264 | break; |
sunyiming | 1:6465a3f5c58a | 265 | } |
sunyiming | 1:6465a3f5c58a | 266 | } |
sunyiming | 1:6465a3f5c58a | 267 | if (tmpNetif == NULL) |
sunyiming | 1:6465a3f5c58a | 268 | return; /* we didn't find any netif today */ |
sunyiming | 1:6465a3f5c58a | 269 | } |
sunyiming | 1:6465a3f5c58a | 270 | snmp_dec_iflist(); |
sunyiming | 1:6465a3f5c58a | 271 | /* this netif is default? */ |
sunyiming | 1:6465a3f5c58a | 272 | if (netif_default == netif) { |
sunyiming | 1:6465a3f5c58a | 273 | /* reset default netif */ |
sunyiming | 1:6465a3f5c58a | 274 | netif_set_default(NULL); |
sunyiming | 1:6465a3f5c58a | 275 | } |
sunyiming | 1:6465a3f5c58a | 276 | LWIP_DEBUGF( NETIF_DEBUG, ("netif_remove: removed netif\n") ); |
sunyiming | 1:6465a3f5c58a | 277 | } |
sunyiming | 1:6465a3f5c58a | 278 | |
sunyiming | 1:6465a3f5c58a | 279 | /** |
sunyiming | 1:6465a3f5c58a | 280 | * Find a network interface by searching for its name |
sunyiming | 1:6465a3f5c58a | 281 | * |
sunyiming | 1:6465a3f5c58a | 282 | * @param name the name of the netif (like netif->name) plus concatenated number |
sunyiming | 1:6465a3f5c58a | 283 | * in ascii representation (e.g. 'en0') |
sunyiming | 1:6465a3f5c58a | 284 | */ |
sunyiming | 1:6465a3f5c58a | 285 | struct netif * |
sunyiming | 1:6465a3f5c58a | 286 | netif_find(char *name) |
sunyiming | 1:6465a3f5c58a | 287 | { |
sunyiming | 1:6465a3f5c58a | 288 | struct netif *netif; |
sunyiming | 1:6465a3f5c58a | 289 | u8_t num; |
sunyiming | 1:6465a3f5c58a | 290 | |
sunyiming | 1:6465a3f5c58a | 291 | if (name == NULL) { |
sunyiming | 1:6465a3f5c58a | 292 | return NULL; |
sunyiming | 1:6465a3f5c58a | 293 | } |
sunyiming | 1:6465a3f5c58a | 294 | |
sunyiming | 1:6465a3f5c58a | 295 | num = name[2] - '0'; |
sunyiming | 1:6465a3f5c58a | 296 | |
sunyiming | 1:6465a3f5c58a | 297 | for(netif = netif_list; netif != NULL; netif = netif->next) { |
sunyiming | 1:6465a3f5c58a | 298 | if (num == netif->num && |
sunyiming | 1:6465a3f5c58a | 299 | name[0] == netif->name[0] && |
sunyiming | 1:6465a3f5c58a | 300 | name[1] == netif->name[1]) { |
sunyiming | 1:6465a3f5c58a | 301 | LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: found %c%c\n", name[0], name[1])); |
sunyiming | 1:6465a3f5c58a | 302 | return netif; |
sunyiming | 1:6465a3f5c58a | 303 | } |
sunyiming | 1:6465a3f5c58a | 304 | } |
sunyiming | 1:6465a3f5c58a | 305 | LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: didn't find %c%c\n", name[0], name[1])); |
sunyiming | 1:6465a3f5c58a | 306 | return NULL; |
sunyiming | 1:6465a3f5c58a | 307 | } |
sunyiming | 1:6465a3f5c58a | 308 | |
sunyiming | 1:6465a3f5c58a | 309 | /** |
sunyiming | 1:6465a3f5c58a | 310 | * Change the IP address of a network interface |
sunyiming | 1:6465a3f5c58a | 311 | * |
sunyiming | 1:6465a3f5c58a | 312 | * @param netif the network interface to change |
sunyiming | 1:6465a3f5c58a | 313 | * @param ipaddr the new IP address |
sunyiming | 1:6465a3f5c58a | 314 | * |
sunyiming | 1:6465a3f5c58a | 315 | * @note call netif_set_addr() if you also want to change netmask and |
sunyiming | 1:6465a3f5c58a | 316 | * default gateway |
sunyiming | 1:6465a3f5c58a | 317 | */ |
sunyiming | 1:6465a3f5c58a | 318 | void |
sunyiming | 1:6465a3f5c58a | 319 | netif_set_ipaddr(struct netif *netif, ip_addr_t *ipaddr) |
sunyiming | 1:6465a3f5c58a | 320 | { |
sunyiming | 1:6465a3f5c58a | 321 | /* Protect against dereferencing NULL pointers by |
sunyiming | 1:6465a3f5c58a | 322 | treating like ANY, as does ip_addr_set() */ |
sunyiming | 1:6465a3f5c58a | 323 | if (!ipaddr) { |
sunyiming | 1:6465a3f5c58a | 324 | ipaddr = IP_ADDR_ANY; |
sunyiming | 1:6465a3f5c58a | 325 | } |
sunyiming | 1:6465a3f5c58a | 326 | |
sunyiming | 1:6465a3f5c58a | 327 | /* TODO: Handling of obsolete pcbs */ |
sunyiming | 1:6465a3f5c58a | 328 | /* See: http://mail.gnu.org/archive/html/lwip-users/2003-03/msg00118.html */ |
sunyiming | 1:6465a3f5c58a | 329 | #if LWIP_TCP |
sunyiming | 1:6465a3f5c58a | 330 | struct tcp_pcb *pcb; |
sunyiming | 1:6465a3f5c58a | 331 | struct tcp_pcb_listen *lpcb; |
sunyiming | 1:6465a3f5c58a | 332 | |
sunyiming | 1:6465a3f5c58a | 333 | /* address is actually being changed? */ |
sunyiming | 1:6465a3f5c58a | 334 | if ((ip_addr_cmp(ipaddr, &(netif->ip_addr))) == 0) { |
sunyiming | 1:6465a3f5c58a | 335 | /* extern struct tcp_pcb *tcp_active_pcbs; defined by tcp.h */ |
sunyiming | 1:6465a3f5c58a | 336 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_set_ipaddr: netif address being changed\n")); |
sunyiming | 1:6465a3f5c58a | 337 | pcb = tcp_active_pcbs; |
sunyiming | 1:6465a3f5c58a | 338 | while (pcb != NULL) { |
sunyiming | 1:6465a3f5c58a | 339 | /* PCB bound to current local interface address? */ |
sunyiming | 1:6465a3f5c58a | 340 | if (ip_addr_cmp(&(pcb->local_ip), &(netif->ip_addr)) |
sunyiming | 1:6465a3f5c58a | 341 | #if LWIP_AUTOIP |
sunyiming | 1:6465a3f5c58a | 342 | /* connections to link-local addresses must persist (RFC3927 ch. 1.9) */ |
sunyiming | 1:6465a3f5c58a | 343 | && !ip_addr_islinklocal(&(pcb->local_ip)) |
sunyiming | 1:6465a3f5c58a | 344 | #endif /* LWIP_AUTOIP */ |
sunyiming | 1:6465a3f5c58a | 345 | ) { |
sunyiming | 1:6465a3f5c58a | 346 | /* this connection must be aborted */ |
sunyiming | 1:6465a3f5c58a | 347 | struct tcp_pcb *next = pcb->next; |
sunyiming | 1:6465a3f5c58a | 348 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_set_ipaddr: aborting TCP pcb %p\n", (void *)pcb)); |
sunyiming | 1:6465a3f5c58a | 349 | tcp_abort(pcb); |
sunyiming | 1:6465a3f5c58a | 350 | pcb = next; |
sunyiming | 1:6465a3f5c58a | 351 | } else { |
sunyiming | 1:6465a3f5c58a | 352 | pcb = pcb->next; |
sunyiming | 1:6465a3f5c58a | 353 | } |
sunyiming | 1:6465a3f5c58a | 354 | } |
sunyiming | 1:6465a3f5c58a | 355 | for (lpcb = tcp_listen_pcbs.listen_pcbs; lpcb != NULL; lpcb = lpcb->next) { |
sunyiming | 1:6465a3f5c58a | 356 | /* PCB bound to current local interface address? */ |
sunyiming | 1:6465a3f5c58a | 357 | if ((!(ip_addr_isany(&(lpcb->local_ip)))) && |
sunyiming | 1:6465a3f5c58a | 358 | (ip_addr_cmp(&(lpcb->local_ip), &(netif->ip_addr)))) { |
sunyiming | 1:6465a3f5c58a | 359 | /* The PCB is listening to the old ipaddr and |
sunyiming | 1:6465a3f5c58a | 360 | * is set to listen to the new one instead */ |
sunyiming | 1:6465a3f5c58a | 361 | ip_addr_set(&(lpcb->local_ip), ipaddr); |
sunyiming | 1:6465a3f5c58a | 362 | } |
sunyiming | 1:6465a3f5c58a | 363 | } |
sunyiming | 1:6465a3f5c58a | 364 | } |
sunyiming | 1:6465a3f5c58a | 365 | #endif |
sunyiming | 1:6465a3f5c58a | 366 | snmp_delete_ipaddridx_tree(netif); |
sunyiming | 1:6465a3f5c58a | 367 | snmp_delete_iprteidx_tree(0,netif); |
sunyiming | 1:6465a3f5c58a | 368 | /* set new IP address to netif */ |
sunyiming | 1:6465a3f5c58a | 369 | ip_addr_set(&(netif->ip_addr), ipaddr); |
sunyiming | 1:6465a3f5c58a | 370 | snmp_insert_ipaddridx_tree(netif); |
sunyiming | 1:6465a3f5c58a | 371 | snmp_insert_iprteidx_tree(0,netif); |
sunyiming | 1:6465a3f5c58a | 372 | |
sunyiming | 1:6465a3f5c58a | 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", |
sunyiming | 1:6465a3f5c58a | 374 | netif->name[0], netif->name[1], |
sunyiming | 1:6465a3f5c58a | 375 | ip4_addr1_16(&netif->ip_addr), |
sunyiming | 1:6465a3f5c58a | 376 | ip4_addr2_16(&netif->ip_addr), |
sunyiming | 1:6465a3f5c58a | 377 | ip4_addr3_16(&netif->ip_addr), |
sunyiming | 1:6465a3f5c58a | 378 | ip4_addr4_16(&netif->ip_addr))); |
sunyiming | 1:6465a3f5c58a | 379 | } |
sunyiming | 1:6465a3f5c58a | 380 | |
sunyiming | 1:6465a3f5c58a | 381 | /** |
sunyiming | 1:6465a3f5c58a | 382 | * Change the default gateway for a network interface |
sunyiming | 1:6465a3f5c58a | 383 | * |
sunyiming | 1:6465a3f5c58a | 384 | * @param netif the network interface to change |
sunyiming | 1:6465a3f5c58a | 385 | * @param gw the new default gateway |
sunyiming | 1:6465a3f5c58a | 386 | * |
sunyiming | 1:6465a3f5c58a | 387 | * @note call netif_set_addr() if you also want to change ip address and netmask |
sunyiming | 1:6465a3f5c58a | 388 | */ |
sunyiming | 1:6465a3f5c58a | 389 | void |
sunyiming | 1:6465a3f5c58a | 390 | netif_set_gw(struct netif *netif, ip_addr_t *gw) |
sunyiming | 1:6465a3f5c58a | 391 | { |
sunyiming | 1:6465a3f5c58a | 392 | ip_addr_set(&(netif->gw), gw); |
sunyiming | 1:6465a3f5c58a | 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", |
sunyiming | 1:6465a3f5c58a | 394 | netif->name[0], netif->name[1], |
sunyiming | 1:6465a3f5c58a | 395 | ip4_addr1_16(&netif->gw), |
sunyiming | 1:6465a3f5c58a | 396 | ip4_addr2_16(&netif->gw), |
sunyiming | 1:6465a3f5c58a | 397 | ip4_addr3_16(&netif->gw), |
sunyiming | 1:6465a3f5c58a | 398 | ip4_addr4_16(&netif->gw))); |
sunyiming | 1:6465a3f5c58a | 399 | } |
sunyiming | 1:6465a3f5c58a | 400 | |
sunyiming | 1:6465a3f5c58a | 401 | /** |
sunyiming | 1:6465a3f5c58a | 402 | * Change the netmask of a network interface |
sunyiming | 1:6465a3f5c58a | 403 | * |
sunyiming | 1:6465a3f5c58a | 404 | * @param netif the network interface to change |
sunyiming | 1:6465a3f5c58a | 405 | * @param netmask the new netmask |
sunyiming | 1:6465a3f5c58a | 406 | * |
sunyiming | 1:6465a3f5c58a | 407 | * @note call netif_set_addr() if you also want to change ip address and |
sunyiming | 1:6465a3f5c58a | 408 | * default gateway |
sunyiming | 1:6465a3f5c58a | 409 | */ |
sunyiming | 1:6465a3f5c58a | 410 | void |
sunyiming | 1:6465a3f5c58a | 411 | netif_set_netmask(struct netif *netif, ip_addr_t *netmask) |
sunyiming | 1:6465a3f5c58a | 412 | { |
sunyiming | 1:6465a3f5c58a | 413 | snmp_delete_iprteidx_tree(0, netif); |
sunyiming | 1:6465a3f5c58a | 414 | /* set new netmask to netif */ |
sunyiming | 1:6465a3f5c58a | 415 | ip_addr_set(&(netif->netmask), netmask); |
sunyiming | 1:6465a3f5c58a | 416 | snmp_insert_iprteidx_tree(0, netif); |
sunyiming | 1:6465a3f5c58a | 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", |
sunyiming | 1:6465a3f5c58a | 418 | netif->name[0], netif->name[1], |
sunyiming | 1:6465a3f5c58a | 419 | ip4_addr1_16(&netif->netmask), |
sunyiming | 1:6465a3f5c58a | 420 | ip4_addr2_16(&netif->netmask), |
sunyiming | 1:6465a3f5c58a | 421 | ip4_addr3_16(&netif->netmask), |
sunyiming | 1:6465a3f5c58a | 422 | ip4_addr4_16(&netif->netmask))); |
sunyiming | 1:6465a3f5c58a | 423 | } |
sunyiming | 1:6465a3f5c58a | 424 | |
sunyiming | 1:6465a3f5c58a | 425 | /** |
sunyiming | 1:6465a3f5c58a | 426 | * Set a network interface as the default network interface |
sunyiming | 1:6465a3f5c58a | 427 | * (used to output all packets for which no specific route is found) |
sunyiming | 1:6465a3f5c58a | 428 | * |
sunyiming | 1:6465a3f5c58a | 429 | * @param netif the default network interface |
sunyiming | 1:6465a3f5c58a | 430 | */ |
sunyiming | 1:6465a3f5c58a | 431 | void |
sunyiming | 1:6465a3f5c58a | 432 | netif_set_default(struct netif *netif) |
sunyiming | 1:6465a3f5c58a | 433 | { |
sunyiming | 1:6465a3f5c58a | 434 | if (netif == NULL) { |
sunyiming | 1:6465a3f5c58a | 435 | /* remove default route */ |
sunyiming | 1:6465a3f5c58a | 436 | snmp_delete_iprteidx_tree(1, netif); |
sunyiming | 1:6465a3f5c58a | 437 | } else { |
sunyiming | 1:6465a3f5c58a | 438 | /* install default route */ |
sunyiming | 1:6465a3f5c58a | 439 | snmp_insert_iprteidx_tree(1, netif); |
sunyiming | 1:6465a3f5c58a | 440 | } |
sunyiming | 1:6465a3f5c58a | 441 | netif_default = netif; |
sunyiming | 1:6465a3f5c58a | 442 | LWIP_DEBUGF(NETIF_DEBUG, ("netif: setting default interface %c%c\n", |
sunyiming | 1:6465a3f5c58a | 443 | netif ? netif->name[0] : '\'', netif ? netif->name[1] : '\'')); |
sunyiming | 1:6465a3f5c58a | 444 | } |
sunyiming | 1:6465a3f5c58a | 445 | |
sunyiming | 1:6465a3f5c58a | 446 | /** |
sunyiming | 1:6465a3f5c58a | 447 | * Bring an interface up, available for processing |
sunyiming | 1:6465a3f5c58a | 448 | * traffic. |
sunyiming | 1:6465a3f5c58a | 449 | * |
sunyiming | 1:6465a3f5c58a | 450 | * @note: Enabling DHCP on a down interface will make it come |
sunyiming | 1:6465a3f5c58a | 451 | * up once configured. |
sunyiming | 1:6465a3f5c58a | 452 | * |
sunyiming | 1:6465a3f5c58a | 453 | * @see dhcp_start() |
sunyiming | 1:6465a3f5c58a | 454 | */ |
sunyiming | 1:6465a3f5c58a | 455 | void netif_set_up(struct netif *netif) |
sunyiming | 1:6465a3f5c58a | 456 | { |
sunyiming | 1:6465a3f5c58a | 457 | if (!(netif->flags & NETIF_FLAG_UP)) { |
sunyiming | 1:6465a3f5c58a | 458 | netif->flags |= NETIF_FLAG_UP; |
sunyiming | 1:6465a3f5c58a | 459 | |
sunyiming | 1:6465a3f5c58a | 460 | #if LWIP_SNMP |
sunyiming | 1:6465a3f5c58a | 461 | snmp_get_sysuptime(&netif->ts); |
sunyiming | 1:6465a3f5c58a | 462 | #endif /* LWIP_SNMP */ |
sunyiming | 1:6465a3f5c58a | 463 | |
sunyiming | 1:6465a3f5c58a | 464 | NETIF_STATUS_CALLBACK(netif); |
sunyiming | 1:6465a3f5c58a | 465 | |
sunyiming | 1:6465a3f5c58a | 466 | if (netif->flags & NETIF_FLAG_LINK_UP) { |
sunyiming | 1:6465a3f5c58a | 467 | #if LWIP_ARP |
sunyiming | 1:6465a3f5c58a | 468 | /* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */ |
sunyiming | 1:6465a3f5c58a | 469 | if (netif->flags & (NETIF_FLAG_ETHARP)) { |
sunyiming | 1:6465a3f5c58a | 470 | etharp_gratuitous(netif); |
sunyiming | 1:6465a3f5c58a | 471 | } |
sunyiming | 1:6465a3f5c58a | 472 | #endif /* LWIP_ARP */ |
sunyiming | 1:6465a3f5c58a | 473 | |
sunyiming | 1:6465a3f5c58a | 474 | #if LWIP_IGMP |
sunyiming | 1:6465a3f5c58a | 475 | /* resend IGMP memberships */ |
sunyiming | 1:6465a3f5c58a | 476 | if (netif->flags & NETIF_FLAG_IGMP) { |
sunyiming | 1:6465a3f5c58a | 477 | igmp_report_groups( netif); |
sunyiming | 1:6465a3f5c58a | 478 | } |
sunyiming | 1:6465a3f5c58a | 479 | #endif /* LWIP_IGMP */ |
sunyiming | 1:6465a3f5c58a | 480 | } |
sunyiming | 1:6465a3f5c58a | 481 | } |
sunyiming | 1:6465a3f5c58a | 482 | } |
sunyiming | 1:6465a3f5c58a | 483 | |
sunyiming | 1:6465a3f5c58a | 484 | /** |
sunyiming | 1:6465a3f5c58a | 485 | * Bring an interface down, disabling any traffic processing. |
sunyiming | 1:6465a3f5c58a | 486 | * |
sunyiming | 1:6465a3f5c58a | 487 | * @note: Enabling DHCP on a down interface will make it come |
sunyiming | 1:6465a3f5c58a | 488 | * up once configured. |
sunyiming | 1:6465a3f5c58a | 489 | * |
sunyiming | 1:6465a3f5c58a | 490 | * @see dhcp_start() |
sunyiming | 1:6465a3f5c58a | 491 | */ |
sunyiming | 1:6465a3f5c58a | 492 | void netif_set_down(struct netif *netif) |
sunyiming | 1:6465a3f5c58a | 493 | { |
sunyiming | 1:6465a3f5c58a | 494 | if (netif->flags & NETIF_FLAG_UP) { |
sunyiming | 1:6465a3f5c58a | 495 | netif->flags &= ~NETIF_FLAG_UP; |
sunyiming | 1:6465a3f5c58a | 496 | #if LWIP_SNMP |
sunyiming | 1:6465a3f5c58a | 497 | snmp_get_sysuptime(&netif->ts); |
sunyiming | 1:6465a3f5c58a | 498 | #endif |
sunyiming | 1:6465a3f5c58a | 499 | |
sunyiming | 1:6465a3f5c58a | 500 | NETIF_STATUS_CALLBACK(netif); |
sunyiming | 1:6465a3f5c58a | 501 | } |
sunyiming | 1:6465a3f5c58a | 502 | } |
sunyiming | 1:6465a3f5c58a | 503 | |
sunyiming | 1:6465a3f5c58a | 504 | #if LWIP_NETIF_STATUS_CALLBACK |
sunyiming | 1:6465a3f5c58a | 505 | /** |
sunyiming | 1:6465a3f5c58a | 506 | * Set callback to be called when interface is brought up/down |
sunyiming | 1:6465a3f5c58a | 507 | */ |
sunyiming | 1:6465a3f5c58a | 508 | void netif_set_status_callback(struct netif *netif, netif_status_callback_fn status_callback) |
sunyiming | 1:6465a3f5c58a | 509 | { |
sunyiming | 1:6465a3f5c58a | 510 | if (netif) { |
sunyiming | 1:6465a3f5c58a | 511 | netif->status_callback = status_callback; |
sunyiming | 1:6465a3f5c58a | 512 | } |
sunyiming | 1:6465a3f5c58a | 513 | } |
sunyiming | 1:6465a3f5c58a | 514 | #endif /* LWIP_NETIF_STATUS_CALLBACK */ |
sunyiming | 1:6465a3f5c58a | 515 | |
sunyiming | 1:6465a3f5c58a | 516 | /** |
sunyiming | 1:6465a3f5c58a | 517 | * Called by a driver when its link goes up |
sunyiming | 1:6465a3f5c58a | 518 | */ |
sunyiming | 1:6465a3f5c58a | 519 | void netif_set_link_up(struct netif *netif ) |
sunyiming | 1:6465a3f5c58a | 520 | { |
sunyiming | 1:6465a3f5c58a | 521 | if (!(netif->flags & NETIF_FLAG_LINK_UP)) { |
sunyiming | 1:6465a3f5c58a | 522 | netif->flags |= NETIF_FLAG_LINK_UP; |
sunyiming | 1:6465a3f5c58a | 523 | |
sunyiming | 1:6465a3f5c58a | 524 | #if LWIP_DHCP |
sunyiming | 1:6465a3f5c58a | 525 | if (netif->dhcp) { |
sunyiming | 1:6465a3f5c58a | 526 | dhcp_network_changed(netif); |
sunyiming | 1:6465a3f5c58a | 527 | } |
sunyiming | 1:6465a3f5c58a | 528 | #endif /* LWIP_DHCP */ |
sunyiming | 1:6465a3f5c58a | 529 | |
sunyiming | 1:6465a3f5c58a | 530 | #if LWIP_AUTOIP |
sunyiming | 1:6465a3f5c58a | 531 | if (netif->autoip) { |
sunyiming | 1:6465a3f5c58a | 532 | autoip_network_changed(netif); |
sunyiming | 1:6465a3f5c58a | 533 | } |
sunyiming | 1:6465a3f5c58a | 534 | #endif /* LWIP_AUTOIP */ |
sunyiming | 1:6465a3f5c58a | 535 | |
sunyiming | 1:6465a3f5c58a | 536 | if (netif->flags & NETIF_FLAG_UP) { |
sunyiming | 1:6465a3f5c58a | 537 | #if LWIP_ARP |
sunyiming | 1:6465a3f5c58a | 538 | /* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */ |
sunyiming | 1:6465a3f5c58a | 539 | if (netif->flags & NETIF_FLAG_ETHARP) { |
sunyiming | 1:6465a3f5c58a | 540 | etharp_gratuitous(netif); |
sunyiming | 1:6465a3f5c58a | 541 | } |
sunyiming | 1:6465a3f5c58a | 542 | #endif /* LWIP_ARP */ |
sunyiming | 1:6465a3f5c58a | 543 | |
sunyiming | 1:6465a3f5c58a | 544 | #if LWIP_IGMP |
sunyiming | 1:6465a3f5c58a | 545 | /* resend IGMP memberships */ |
sunyiming | 1:6465a3f5c58a | 546 | if (netif->flags & NETIF_FLAG_IGMP) { |
sunyiming | 1:6465a3f5c58a | 547 | igmp_report_groups( netif); |
sunyiming | 1:6465a3f5c58a | 548 | } |
sunyiming | 1:6465a3f5c58a | 549 | #endif /* LWIP_IGMP */ |
sunyiming | 1:6465a3f5c58a | 550 | } |
sunyiming | 1:6465a3f5c58a | 551 | NETIF_LINK_CALLBACK(netif); |
sunyiming | 1:6465a3f5c58a | 552 | } |
sunyiming | 1:6465a3f5c58a | 553 | } |
sunyiming | 1:6465a3f5c58a | 554 | |
sunyiming | 1:6465a3f5c58a | 555 | /** |
sunyiming | 1:6465a3f5c58a | 556 | * Called by a driver when its link goes down |
sunyiming | 1:6465a3f5c58a | 557 | */ |
sunyiming | 1:6465a3f5c58a | 558 | void netif_set_link_down(struct netif *netif ) |
sunyiming | 1:6465a3f5c58a | 559 | { |
sunyiming | 1:6465a3f5c58a | 560 | if (netif->flags & NETIF_FLAG_LINK_UP) { |
sunyiming | 1:6465a3f5c58a | 561 | netif->flags &= ~NETIF_FLAG_LINK_UP; |
sunyiming | 1:6465a3f5c58a | 562 | NETIF_LINK_CALLBACK(netif); |
sunyiming | 1:6465a3f5c58a | 563 | } |
sunyiming | 1:6465a3f5c58a | 564 | } |
sunyiming | 1:6465a3f5c58a | 565 | |
sunyiming | 1:6465a3f5c58a | 566 | #if LWIP_NETIF_LINK_CALLBACK |
sunyiming | 1:6465a3f5c58a | 567 | /** |
sunyiming | 1:6465a3f5c58a | 568 | * Set callback to be called when link is brought up/down |
sunyiming | 1:6465a3f5c58a | 569 | */ |
sunyiming | 1:6465a3f5c58a | 570 | void netif_set_link_callback(struct netif *netif, netif_status_callback_fn link_callback) |
sunyiming | 1:6465a3f5c58a | 571 | { |
sunyiming | 1:6465a3f5c58a | 572 | if (netif) { |
sunyiming | 1:6465a3f5c58a | 573 | netif->link_callback = link_callback; |
sunyiming | 1:6465a3f5c58a | 574 | } |
sunyiming | 1:6465a3f5c58a | 575 | } |
sunyiming | 1:6465a3f5c58a | 576 | #endif /* LWIP_NETIF_LINK_CALLBACK */ |
sunyiming | 1:6465a3f5c58a | 577 | |
sunyiming | 1:6465a3f5c58a | 578 | #if ENABLE_LOOPBACK |
sunyiming | 1:6465a3f5c58a | 579 | /** |
sunyiming | 1:6465a3f5c58a | 580 | * Send an IP packet to be received on the same netif (loopif-like). |
sunyiming | 1:6465a3f5c58a | 581 | * The pbuf is simply copied and handed back to netif->input. |
sunyiming | 1:6465a3f5c58a | 582 | * In multithreaded mode, this is done directly since netif->input must put |
sunyiming | 1:6465a3f5c58a | 583 | * the packet on a queue. |
sunyiming | 1:6465a3f5c58a | 584 | * In callback mode, the packet is put on an internal queue and is fed to |
sunyiming | 1:6465a3f5c58a | 585 | * netif->input by netif_poll(). |
sunyiming | 1:6465a3f5c58a | 586 | * |
sunyiming | 1:6465a3f5c58a | 587 | * @param netif the lwip network interface structure |
sunyiming | 1:6465a3f5c58a | 588 | * @param p the (IP) packet to 'send' |
sunyiming | 1:6465a3f5c58a | 589 | * @param ipaddr the ip address to send the packet to (not used) |
sunyiming | 1:6465a3f5c58a | 590 | * @return ERR_OK if the packet has been sent |
sunyiming | 1:6465a3f5c58a | 591 | * ERR_MEM if the pbuf used to copy the packet couldn't be allocated |
sunyiming | 1:6465a3f5c58a | 592 | */ |
sunyiming | 1:6465a3f5c58a | 593 | err_t |
sunyiming | 1:6465a3f5c58a | 594 | netif_loop_output(struct netif *netif, struct pbuf *p, |
sunyiming | 1:6465a3f5c58a | 595 | ip_addr_t *ipaddr) |
sunyiming | 1:6465a3f5c58a | 596 | { |
sunyiming | 1:6465a3f5c58a | 597 | struct pbuf *r; |
sunyiming | 1:6465a3f5c58a | 598 | err_t err; |
sunyiming | 1:6465a3f5c58a | 599 | struct pbuf *last; |
sunyiming | 1:6465a3f5c58a | 600 | #if LWIP_LOOPBACK_MAX_PBUFS |
sunyiming | 1:6465a3f5c58a | 601 | u8_t clen = 0; |
sunyiming | 1:6465a3f5c58a | 602 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */ |
sunyiming | 1:6465a3f5c58a | 603 | /* If we have a loopif, SNMP counters are adjusted for it, |
sunyiming | 1:6465a3f5c58a | 604 | * if not they are adjusted for 'netif'. */ |
sunyiming | 1:6465a3f5c58a | 605 | #if LWIP_SNMP |
sunyiming | 1:6465a3f5c58a | 606 | #if LWIP_HAVE_LOOPIF |
sunyiming | 1:6465a3f5c58a | 607 | struct netif *stats_if = &loop_netif; |
sunyiming | 1:6465a3f5c58a | 608 | #else /* LWIP_HAVE_LOOPIF */ |
sunyiming | 1:6465a3f5c58a | 609 | struct netif *stats_if = netif; |
sunyiming | 1:6465a3f5c58a | 610 | #endif /* LWIP_HAVE_LOOPIF */ |
sunyiming | 1:6465a3f5c58a | 611 | #endif /* LWIP_SNMP */ |
sunyiming | 1:6465a3f5c58a | 612 | SYS_ARCH_DECL_PROTECT(lev); |
sunyiming | 1:6465a3f5c58a | 613 | LWIP_UNUSED_ARG(ipaddr); |
sunyiming | 1:6465a3f5c58a | 614 | |
sunyiming | 1:6465a3f5c58a | 615 | /* Allocate a new pbuf */ |
sunyiming | 1:6465a3f5c58a | 616 | r = pbuf_alloc(PBUF_LINK, p->tot_len, PBUF_RAM); |
sunyiming | 1:6465a3f5c58a | 617 | if (r == NULL) { |
sunyiming | 1:6465a3f5c58a | 618 | LINK_STATS_INC(link.memerr); |
sunyiming | 1:6465a3f5c58a | 619 | LINK_STATS_INC(link.drop); |
sunyiming | 1:6465a3f5c58a | 620 | snmp_inc_ifoutdiscards(stats_if); |
sunyiming | 1:6465a3f5c58a | 621 | return ERR_MEM; |
sunyiming | 1:6465a3f5c58a | 622 | } |
sunyiming | 1:6465a3f5c58a | 623 | #if LWIP_LOOPBACK_MAX_PBUFS |
sunyiming | 1:6465a3f5c58a | 624 | clen = pbuf_clen(r); |
sunyiming | 1:6465a3f5c58a | 625 | /* check for overflow or too many pbuf on queue */ |
sunyiming | 1:6465a3f5c58a | 626 | if(((netif->loop_cnt_current + clen) < netif->loop_cnt_current) || |
sunyiming | 1:6465a3f5c58a | 627 | ((netif->loop_cnt_current + clen) > LWIP_LOOPBACK_MAX_PBUFS)) { |
sunyiming | 1:6465a3f5c58a | 628 | pbuf_free(r); |
sunyiming | 1:6465a3f5c58a | 629 | LINK_STATS_INC(link.memerr); |
sunyiming | 1:6465a3f5c58a | 630 | LINK_STATS_INC(link.drop); |
sunyiming | 1:6465a3f5c58a | 631 | snmp_inc_ifoutdiscards(stats_if); |
sunyiming | 1:6465a3f5c58a | 632 | return ERR_MEM; |
sunyiming | 1:6465a3f5c58a | 633 | } |
sunyiming | 1:6465a3f5c58a | 634 | netif->loop_cnt_current += clen; |
sunyiming | 1:6465a3f5c58a | 635 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */ |
sunyiming | 1:6465a3f5c58a | 636 | |
sunyiming | 1:6465a3f5c58a | 637 | /* Copy the whole pbuf queue p into the single pbuf r */ |
sunyiming | 1:6465a3f5c58a | 638 | if ((err = pbuf_copy(r, p)) != ERR_OK) { |
sunyiming | 1:6465a3f5c58a | 639 | pbuf_free(r); |
sunyiming | 1:6465a3f5c58a | 640 | LINK_STATS_INC(link.memerr); |
sunyiming | 1:6465a3f5c58a | 641 | LINK_STATS_INC(link.drop); |
sunyiming | 1:6465a3f5c58a | 642 | snmp_inc_ifoutdiscards(stats_if); |
sunyiming | 1:6465a3f5c58a | 643 | return err; |
sunyiming | 1:6465a3f5c58a | 644 | } |
sunyiming | 1:6465a3f5c58a | 645 | |
sunyiming | 1:6465a3f5c58a | 646 | /* Put the packet on a linked list which gets emptied through calling |
sunyiming | 1:6465a3f5c58a | 647 | netif_poll(). */ |
sunyiming | 1:6465a3f5c58a | 648 | |
sunyiming | 1:6465a3f5c58a | 649 | /* let last point to the last pbuf in chain r */ |
sunyiming | 1:6465a3f5c58a | 650 | for (last = r; last->next != NULL; last = last->next); |
sunyiming | 1:6465a3f5c58a | 651 | |
sunyiming | 1:6465a3f5c58a | 652 | SYS_ARCH_PROTECT(lev); |
sunyiming | 1:6465a3f5c58a | 653 | if(netif->loop_first != NULL) { |
sunyiming | 1:6465a3f5c58a | 654 | LWIP_ASSERT("if first != NULL, last must also be != NULL", netif->loop_last != NULL); |
sunyiming | 1:6465a3f5c58a | 655 | netif->loop_last->next = r; |
sunyiming | 1:6465a3f5c58a | 656 | netif->loop_last = last; |
sunyiming | 1:6465a3f5c58a | 657 | } else { |
sunyiming | 1:6465a3f5c58a | 658 | netif->loop_first = r; |
sunyiming | 1:6465a3f5c58a | 659 | netif->loop_last = last; |
sunyiming | 1:6465a3f5c58a | 660 | } |
sunyiming | 1:6465a3f5c58a | 661 | SYS_ARCH_UNPROTECT(lev); |
sunyiming | 1:6465a3f5c58a | 662 | |
sunyiming | 1:6465a3f5c58a | 663 | LINK_STATS_INC(link.xmit); |
sunyiming | 1:6465a3f5c58a | 664 | snmp_add_ifoutoctets(stats_if, p->tot_len); |
sunyiming | 1:6465a3f5c58a | 665 | snmp_inc_ifoutucastpkts(stats_if); |
sunyiming | 1:6465a3f5c58a | 666 | |
sunyiming | 1:6465a3f5c58a | 667 | #if LWIP_NETIF_LOOPBACK_MULTITHREADING |
sunyiming | 1:6465a3f5c58a | 668 | /* For multithreading environment, schedule a call to netif_poll */ |
sunyiming | 1:6465a3f5c58a | 669 | tcpip_callback((tcpip_callback_fn)netif_poll, netif); |
sunyiming | 1:6465a3f5c58a | 670 | #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */ |
sunyiming | 1:6465a3f5c58a | 671 | |
sunyiming | 1:6465a3f5c58a | 672 | return ERR_OK; |
sunyiming | 1:6465a3f5c58a | 673 | } |
sunyiming | 1:6465a3f5c58a | 674 | |
sunyiming | 1:6465a3f5c58a | 675 | /** |
sunyiming | 1:6465a3f5c58a | 676 | * Call netif_poll() in the main loop of your application. This is to prevent |
sunyiming | 1:6465a3f5c58a | 677 | * reentering non-reentrant functions like tcp_input(). Packets passed to |
sunyiming | 1:6465a3f5c58a | 678 | * netif_loop_output() are put on a list that is passed to netif->input() by |
sunyiming | 1:6465a3f5c58a | 679 | * netif_poll(). |
sunyiming | 1:6465a3f5c58a | 680 | */ |
sunyiming | 1:6465a3f5c58a | 681 | void |
sunyiming | 1:6465a3f5c58a | 682 | netif_poll(struct netif *netif) |
sunyiming | 1:6465a3f5c58a | 683 | { |
sunyiming | 1:6465a3f5c58a | 684 | struct pbuf *in; |
sunyiming | 1:6465a3f5c58a | 685 | /* If we have a loopif, SNMP counters are adjusted for it, |
sunyiming | 1:6465a3f5c58a | 686 | * if not they are adjusted for 'netif'. */ |
sunyiming | 1:6465a3f5c58a | 687 | #if LWIP_SNMP |
sunyiming | 1:6465a3f5c58a | 688 | #if LWIP_HAVE_LOOPIF |
sunyiming | 1:6465a3f5c58a | 689 | struct netif *stats_if = &loop_netif; |
sunyiming | 1:6465a3f5c58a | 690 | #else /* LWIP_HAVE_LOOPIF */ |
sunyiming | 1:6465a3f5c58a | 691 | struct netif *stats_if = netif; |
sunyiming | 1:6465a3f5c58a | 692 | #endif /* LWIP_HAVE_LOOPIF */ |
sunyiming | 1:6465a3f5c58a | 693 | #endif /* LWIP_SNMP */ |
sunyiming | 1:6465a3f5c58a | 694 | SYS_ARCH_DECL_PROTECT(lev); |
sunyiming | 1:6465a3f5c58a | 695 | |
sunyiming | 1:6465a3f5c58a | 696 | do { |
sunyiming | 1:6465a3f5c58a | 697 | /* Get a packet from the list. With SYS_LIGHTWEIGHT_PROT=1, this is protected */ |
sunyiming | 1:6465a3f5c58a | 698 | SYS_ARCH_PROTECT(lev); |
sunyiming | 1:6465a3f5c58a | 699 | in = netif->loop_first; |
sunyiming | 1:6465a3f5c58a | 700 | if (in != NULL) { |
sunyiming | 1:6465a3f5c58a | 701 | struct pbuf *in_end = in; |
sunyiming | 1:6465a3f5c58a | 702 | #if LWIP_LOOPBACK_MAX_PBUFS |
sunyiming | 1:6465a3f5c58a | 703 | u8_t clen = pbuf_clen(in); |
sunyiming | 1:6465a3f5c58a | 704 | /* adjust the number of pbufs on queue */ |
sunyiming | 1:6465a3f5c58a | 705 | LWIP_ASSERT("netif->loop_cnt_current underflow", |
sunyiming | 1:6465a3f5c58a | 706 | ((netif->loop_cnt_current - clen) < netif->loop_cnt_current)); |
sunyiming | 1:6465a3f5c58a | 707 | netif->loop_cnt_current -= clen; |
sunyiming | 1:6465a3f5c58a | 708 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */ |
sunyiming | 1:6465a3f5c58a | 709 | while (in_end->len != in_end->tot_len) { |
sunyiming | 1:6465a3f5c58a | 710 | LWIP_ASSERT("bogus pbuf: len != tot_len but next == NULL!", in_end->next != NULL); |
sunyiming | 1:6465a3f5c58a | 711 | in_end = in_end->next; |
sunyiming | 1:6465a3f5c58a | 712 | } |
sunyiming | 1:6465a3f5c58a | 713 | /* 'in_end' now points to the last pbuf from 'in' */ |
sunyiming | 1:6465a3f5c58a | 714 | if (in_end == netif->loop_last) { |
sunyiming | 1:6465a3f5c58a | 715 | /* this was the last pbuf in the list */ |
sunyiming | 1:6465a3f5c58a | 716 | netif->loop_first = netif->loop_last = NULL; |
sunyiming | 1:6465a3f5c58a | 717 | } else { |
sunyiming | 1:6465a3f5c58a | 718 | /* pop the pbuf off the list */ |
sunyiming | 1:6465a3f5c58a | 719 | netif->loop_first = in_end->next; |
sunyiming | 1:6465a3f5c58a | 720 | LWIP_ASSERT("should not be null since first != last!", netif->loop_first != NULL); |
sunyiming | 1:6465a3f5c58a | 721 | } |
sunyiming | 1:6465a3f5c58a | 722 | /* De-queue the pbuf from its successors on the 'loop_' list. */ |
sunyiming | 1:6465a3f5c58a | 723 | in_end->next = NULL; |
sunyiming | 1:6465a3f5c58a | 724 | } |
sunyiming | 1:6465a3f5c58a | 725 | SYS_ARCH_UNPROTECT(lev); |
sunyiming | 1:6465a3f5c58a | 726 | |
sunyiming | 1:6465a3f5c58a | 727 | if (in != NULL) { |
sunyiming | 1:6465a3f5c58a | 728 | LINK_STATS_INC(link.recv); |
sunyiming | 1:6465a3f5c58a | 729 | snmp_add_ifinoctets(stats_if, in->tot_len); |
sunyiming | 1:6465a3f5c58a | 730 | snmp_inc_ifinucastpkts(stats_if); |
sunyiming | 1:6465a3f5c58a | 731 | /* loopback packets are always IP packets! */ |
sunyiming | 1:6465a3f5c58a | 732 | if (ip_input(in, netif) != ERR_OK) { |
sunyiming | 1:6465a3f5c58a | 733 | pbuf_free(in); |
sunyiming | 1:6465a3f5c58a | 734 | } |
sunyiming | 1:6465a3f5c58a | 735 | /* Don't reference the packet any more! */ |
sunyiming | 1:6465a3f5c58a | 736 | in = NULL; |
sunyiming | 1:6465a3f5c58a | 737 | } |
sunyiming | 1:6465a3f5c58a | 738 | /* go on while there is a packet on the list */ |
sunyiming | 1:6465a3f5c58a | 739 | } while (netif->loop_first != NULL); |
sunyiming | 1:6465a3f5c58a | 740 | } |
sunyiming | 1:6465a3f5c58a | 741 | |
sunyiming | 1:6465a3f5c58a | 742 | #if !LWIP_NETIF_LOOPBACK_MULTITHREADING |
sunyiming | 1:6465a3f5c58a | 743 | /** |
sunyiming | 1:6465a3f5c58a | 744 | * Calls netif_poll() for every netif on the netif_list. |
sunyiming | 1:6465a3f5c58a | 745 | */ |
sunyiming | 1:6465a3f5c58a | 746 | void |
sunyiming | 1:6465a3f5c58a | 747 | netif_poll_all(void) |
sunyiming | 1:6465a3f5c58a | 748 | { |
sunyiming | 1:6465a3f5c58a | 749 | struct netif *netif = netif_list; |
sunyiming | 1:6465a3f5c58a | 750 | /* loop through netifs */ |
sunyiming | 1:6465a3f5c58a | 751 | while (netif != NULL) { |
sunyiming | 1:6465a3f5c58a | 752 | netif_poll(netif); |
sunyiming | 1:6465a3f5c58a | 753 | /* proceed to next network interface */ |
sunyiming | 1:6465a3f5c58a | 754 | netif = netif->next; |
sunyiming | 1:6465a3f5c58a | 755 | } |
sunyiming | 1:6465a3f5c58a | 756 | } |
sunyiming | 1:6465a3f5c58a | 757 | #endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */ |
sunyiming | 1:6465a3f5c58a | 758 | #endif /* ENABLE_LOOPBACK */ |