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Dependencies:   mbed

lwip/netif/ethernetif.c@0:2a53a4c3238c, 2012-08-13 (annotated)

Committer:
lorcansmith
Date:
Mon Aug 13 15:07:40 2012 +0000
Revision:
0:2a53a4c3238c
v1.1 release includes ioAlarm traps

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lorcansmith 0:2a53a4c3238c 1 /**
lorcansmith 0:2a53a4c3238c 2 * @file
lorcansmith 0:2a53a4c3238c 3 * Ethernet Interface Skeleton
lorcansmith 0:2a53a4c3238c 4 *
lorcansmith 0:2a53a4c3238c 5 */
lorcansmith 0:2a53a4c3238c 6
lorcansmith 0:2a53a4c3238c 7 /*
lorcansmith 0:2a53a4c3238c 8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
lorcansmith 0:2a53a4c3238c 9 * All rights reserved.
lorcansmith 0:2a53a4c3238c 10 *
lorcansmith 0:2a53a4c3238c 11 * Redistribution and use in source and binary forms, with or without modification,
lorcansmith 0:2a53a4c3238c 12 * are permitted provided that the following conditions are met:
lorcansmith 0:2a53a4c3238c 13 *
lorcansmith 0:2a53a4c3238c 14 * 1. Redistributions of source code must retain the above copyright notice,
lorcansmith 0:2a53a4c3238c 15 * this list of conditions and the following disclaimer.
lorcansmith 0:2a53a4c3238c 16 * 2. Redistributions in binary form must reproduce the above copyright notice,
lorcansmith 0:2a53a4c3238c 17 * this list of conditions and the following disclaimer in the documentation
lorcansmith 0:2a53a4c3238c 18 * and/or other materials provided with the distribution.
lorcansmith 0:2a53a4c3238c 19 * 3. The name of the author may not be used to endorse or promote products
lorcansmith 0:2a53a4c3238c 20 * derived from this software without specific prior written permission.
lorcansmith 0:2a53a4c3238c 21 *
lorcansmith 0:2a53a4c3238c 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
lorcansmith 0:2a53a4c3238c 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
lorcansmith 0:2a53a4c3238c 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
lorcansmith 0:2a53a4c3238c 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
lorcansmith 0:2a53a4c3238c 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
lorcansmith 0:2a53a4c3238c 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
lorcansmith 0:2a53a4c3238c 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
lorcansmith 0:2a53a4c3238c 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
lorcansmith 0:2a53a4c3238c 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
lorcansmith 0:2a53a4c3238c 31 * OF SUCH DAMAGE.
lorcansmith 0:2a53a4c3238c 32 *
lorcansmith 0:2a53a4c3238c 33 * This file is part of the lwIP TCP/IP stack.
lorcansmith 0:2a53a4c3238c 34 *
lorcansmith 0:2a53a4c3238c 35 * Author: Adam Dunkels <adam@sics.se>
lorcansmith 0:2a53a4c3238c 36 *
lorcansmith 0:2a53a4c3238c 37 */
lorcansmith 0:2a53a4c3238c 38
lorcansmith 0:2a53a4c3238c 39 /*
lorcansmith 0:2a53a4c3238c 40 * This file is a skeleton for developing Ethernet network interface
lorcansmith 0:2a53a4c3238c 41 * drivers for lwIP. Add code to the low_level functions and do a
lorcansmith 0:2a53a4c3238c 42 * search-and-replace for the word "ethernetif" to replace it with
lorcansmith 0:2a53a4c3238c 43 * something that better describes your network interface.
lorcansmith 0:2a53a4c3238c 44 */
lorcansmith 0:2a53a4c3238c 45
lorcansmith 0:2a53a4c3238c 46 #include "lwip/opt.h"
lorcansmith 0:2a53a4c3238c 47
lorcansmith 0:2a53a4c3238c 48 #if 0 /* don't build, this is only a skeleton, see previous comment */
lorcansmith 0:2a53a4c3238c 49
lorcansmith 0:2a53a4c3238c 50 #include "lwip/def.h"
lorcansmith 0:2a53a4c3238c 51 #include "lwip/mem.h"
lorcansmith 0:2a53a4c3238c 52 #include "lwip/pbuf.h"
lorcansmith 0:2a53a4c3238c 53 #include "lwip/sys.h"
lorcansmith 0:2a53a4c3238c 54 #include <lwip/stats.h>
lorcansmith 0:2a53a4c3238c 55 #include <lwip/snmp.h>
lorcansmith 0:2a53a4c3238c 56 #include "netif/etharp.h"
lorcansmith 0:2a53a4c3238c 57 #include "netif/ppp_oe.h"
lorcansmith 0:2a53a4c3238c 58
lorcansmith 0:2a53a4c3238c 59 /* Define those to better describe your network interface. */
lorcansmith 0:2a53a4c3238c 60 #define IFNAME0 'e'
lorcansmith 0:2a53a4c3238c 61 #define IFNAME1 'n'
lorcansmith 0:2a53a4c3238c 62
lorcansmith 0:2a53a4c3238c 63 /**
lorcansmith 0:2a53a4c3238c 64 * Helper struct to hold private data used to operate your ethernet interface.
lorcansmith 0:2a53a4c3238c 65 * Keeping the ethernet address of the MAC in this struct is not necessary
lorcansmith 0:2a53a4c3238c 66 * as it is already kept in the struct netif.
lorcansmith 0:2a53a4c3238c 67 * But this is only an example, anyway...
lorcansmith 0:2a53a4c3238c 68 */
lorcansmith 0:2a53a4c3238c 69 struct ethernetif {
lorcansmith 0:2a53a4c3238c 70 struct eth_addr *ethaddr;
lorcansmith 0:2a53a4c3238c 71 /* Add whatever per-interface state that is needed here. */
lorcansmith 0:2a53a4c3238c 72 };
lorcansmith 0:2a53a4c3238c 73
lorcansmith 0:2a53a4c3238c 74 /* Forward declarations. */
lorcansmith 0:2a53a4c3238c 75 static void ethernetif_input(struct netif *netif);
lorcansmith 0:2a53a4c3238c 76
lorcansmith 0:2a53a4c3238c 77 /**
lorcansmith 0:2a53a4c3238c 78 * In this function, the hardware should be initialized.
lorcansmith 0:2a53a4c3238c 79 * Called from ethernetif_init().
lorcansmith 0:2a53a4c3238c 80 *
lorcansmith 0:2a53a4c3238c 81 * @param netif the already initialized lwip network interface structure
lorcansmith 0:2a53a4c3238c 82 * for this ethernetif
lorcansmith 0:2a53a4c3238c 83 */
lorcansmith 0:2a53a4c3238c 84 static void
lorcansmith 0:2a53a4c3238c 85 low_level_init(struct netif *netif)
lorcansmith 0:2a53a4c3238c 86 {
lorcansmith 0:2a53a4c3238c 87 struct ethernetif *ethernetif = netif->state;
lorcansmith 0:2a53a4c3238c 88
lorcansmith 0:2a53a4c3238c 89 /* set MAC hardware address length */
lorcansmith 0:2a53a4c3238c 90 netif->hwaddr_len = ETHARP_HWADDR_LEN;
lorcansmith 0:2a53a4c3238c 91
lorcansmith 0:2a53a4c3238c 92 /* set MAC hardware address */
lorcansmith 0:2a53a4c3238c 93 netif->hwaddr[0] = ;
lorcansmith 0:2a53a4c3238c 94 ...
lorcansmith 0:2a53a4c3238c 95 netif->hwaddr[5] = ;
lorcansmith 0:2a53a4c3238c 96
lorcansmith 0:2a53a4c3238c 97 /* maximum transfer unit */
lorcansmith 0:2a53a4c3238c 98 netif->mtu = 1500;
lorcansmith 0:2a53a4c3238c 99
lorcansmith 0:2a53a4c3238c 100 /* device capabilities */
lorcansmith 0:2a53a4c3238c 101 /* don't set NETIF_FLAG_ETHARP if this device is not an ethernet one */
lorcansmith 0:2a53a4c3238c 102 netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;
lorcansmith 0:2a53a4c3238c 103
lorcansmith 0:2a53a4c3238c 104 /* Do whatever else is needed to initialize interface. */
lorcansmith 0:2a53a4c3238c 105 }
lorcansmith 0:2a53a4c3238c 106
lorcansmith 0:2a53a4c3238c 107 /**
lorcansmith 0:2a53a4c3238c 108 * This function should do the actual transmission of the packet. The packet is
lorcansmith 0:2a53a4c3238c 109 * contained in the pbuf that is passed to the function. This pbuf
lorcansmith 0:2a53a4c3238c 110 * might be chained.
lorcansmith 0:2a53a4c3238c 111 *
lorcansmith 0:2a53a4c3238c 112 * @param netif the lwip network interface structure for this ethernetif
lorcansmith 0:2a53a4c3238c 113 * @param p the MAC packet to send (e.g. IP packet including MAC addresses and type)
lorcansmith 0:2a53a4c3238c 114 * @return ERR_OK if the packet could be sent
lorcansmith 0:2a53a4c3238c 115 * an err_t value if the packet couldn't be sent
lorcansmith 0:2a53a4c3238c 116 *
lorcansmith 0:2a53a4c3238c 117 * @note Returning ERR_MEM here if a DMA queue of your MAC is full can lead to
lorcansmith 0:2a53a4c3238c 118 * strange results. You might consider waiting for space in the DMA queue
lorcansmith 0:2a53a4c3238c 119 * to become availale since the stack doesn't retry to send a packet
lorcansmith 0:2a53a4c3238c 120 * dropped because of memory failure (except for the TCP timers).
lorcansmith 0:2a53a4c3238c 121 */
lorcansmith 0:2a53a4c3238c 122
lorcansmith 0:2a53a4c3238c 123 static err_t
lorcansmith 0:2a53a4c3238c 124 low_level_output(struct netif *netif, struct pbuf *p)
lorcansmith 0:2a53a4c3238c 125 {
lorcansmith 0:2a53a4c3238c 126 struct ethernetif *ethernetif = netif->state;
lorcansmith 0:2a53a4c3238c 127 struct pbuf *q;
lorcansmith 0:2a53a4c3238c 128
lorcansmith 0:2a53a4c3238c 129 initiate transfer();
lorcansmith 0:2a53a4c3238c 130
lorcansmith 0:2a53a4c3238c 131 #if ETH_PAD_SIZE
lorcansmith 0:2a53a4c3238c 132 pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
lorcansmith 0:2a53a4c3238c 133 #endif
lorcansmith 0:2a53a4c3238c 134
lorcansmith 0:2a53a4c3238c 135 for(q = p; q != NULL; q = q->next) {
lorcansmith 0:2a53a4c3238c 136 /* Send the data from the pbuf to the interface, one pbuf at a
lorcansmith 0:2a53a4c3238c 137 time. The size of the data in each pbuf is kept in the ->len
lorcansmith 0:2a53a4c3238c 138 variable. */
lorcansmith 0:2a53a4c3238c 139 send data from(q->payload, q->len);
lorcansmith 0:2a53a4c3238c 140 }
lorcansmith 0:2a53a4c3238c 141
lorcansmith 0:2a53a4c3238c 142 signal that packet should be sent();
lorcansmith 0:2a53a4c3238c 143
lorcansmith 0:2a53a4c3238c 144 #if ETH_PAD_SIZE
lorcansmith 0:2a53a4c3238c 145 pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
lorcansmith 0:2a53a4c3238c 146 #endif
lorcansmith 0:2a53a4c3238c 147
lorcansmith 0:2a53a4c3238c 148 LINK_STATS_INC(link.xmit);
lorcansmith 0:2a53a4c3238c 149
lorcansmith 0:2a53a4c3238c 150 return ERR_OK;
lorcansmith 0:2a53a4c3238c 151 }
lorcansmith 0:2a53a4c3238c 152
lorcansmith 0:2a53a4c3238c 153 /**
lorcansmith 0:2a53a4c3238c 154 * Should allocate a pbuf and transfer the bytes of the incoming
lorcansmith 0:2a53a4c3238c 155 * packet from the interface into the pbuf.
lorcansmith 0:2a53a4c3238c 156 *
lorcansmith 0:2a53a4c3238c 157 * @param netif the lwip network interface structure for this ethernetif
lorcansmith 0:2a53a4c3238c 158 * @return a pbuf filled with the received packet (including MAC header)
lorcansmith 0:2a53a4c3238c 159 * NULL on memory error
lorcansmith 0:2a53a4c3238c 160 */
lorcansmith 0:2a53a4c3238c 161 static struct pbuf *
lorcansmith 0:2a53a4c3238c 162 low_level_input(struct netif *netif)
lorcansmith 0:2a53a4c3238c 163 {
lorcansmith 0:2a53a4c3238c 164 struct ethernetif *ethernetif = netif->state;
lorcansmith 0:2a53a4c3238c 165 struct pbuf *p, *q;
lorcansmith 0:2a53a4c3238c 166 u16_t len;
lorcansmith 0:2a53a4c3238c 167
lorcansmith 0:2a53a4c3238c 168 /* Obtain the size of the packet and put it into the "len"
lorcansmith 0:2a53a4c3238c 169 variable. */
lorcansmith 0:2a53a4c3238c 170 len = ;
lorcansmith 0:2a53a4c3238c 171
lorcansmith 0:2a53a4c3238c 172 #if ETH_PAD_SIZE
lorcansmith 0:2a53a4c3238c 173 len += ETH_PAD_SIZE; /* allow room for Ethernet padding */
lorcansmith 0:2a53a4c3238c 174 #endif
lorcansmith 0:2a53a4c3238c 175
lorcansmith 0:2a53a4c3238c 176 /* We allocate a pbuf chain of pbufs from the pool. */
lorcansmith 0:2a53a4c3238c 177 p = pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
lorcansmith 0:2a53a4c3238c 178
lorcansmith 0:2a53a4c3238c 179 if (p != NULL) {
lorcansmith 0:2a53a4c3238c 180
lorcansmith 0:2a53a4c3238c 181 #if ETH_PAD_SIZE
lorcansmith 0:2a53a4c3238c 182 pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
lorcansmith 0:2a53a4c3238c 183 #endif
lorcansmith 0:2a53a4c3238c 184
lorcansmith 0:2a53a4c3238c 185 /* We iterate over the pbuf chain until we have read the entire
lorcansmith 0:2a53a4c3238c 186 * packet into the pbuf. */
lorcansmith 0:2a53a4c3238c 187 for(q = p; q != NULL; q = q->next) {
lorcansmith 0:2a53a4c3238c 188 /* Read enough bytes to fill this pbuf in the chain. The
lorcansmith 0:2a53a4c3238c 189 * available data in the pbuf is given by the q->len
lorcansmith 0:2a53a4c3238c 190 * variable.
lorcansmith 0:2a53a4c3238c 191 * This does not necessarily have to be a memcpy, you can also preallocate
lorcansmith 0:2a53a4c3238c 192 * pbufs for a DMA-enabled MAC and after receiving truncate it to the
lorcansmith 0:2a53a4c3238c 193 * actually received size. In this case, ensure the tot_len member of the
lorcansmith 0:2a53a4c3238c 194 * pbuf is the sum of the chained pbuf len members.
lorcansmith 0:2a53a4c3238c 195 */
lorcansmith 0:2a53a4c3238c 196 read data into(q->payload, q->len);
lorcansmith 0:2a53a4c3238c 197 }
lorcansmith 0:2a53a4c3238c 198 acknowledge that packet has been read();
lorcansmith 0:2a53a4c3238c 199
lorcansmith 0:2a53a4c3238c 200 #if ETH_PAD_SIZE
lorcansmith 0:2a53a4c3238c 201 pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
lorcansmith 0:2a53a4c3238c 202 #endif
lorcansmith 0:2a53a4c3238c 203
lorcansmith 0:2a53a4c3238c 204 LINK_STATS_INC(link.recv);
lorcansmith 0:2a53a4c3238c 205 } else {
lorcansmith 0:2a53a4c3238c 206 drop packet();
lorcansmith 0:2a53a4c3238c 207 LINK_STATS_INC(link.memerr);
lorcansmith 0:2a53a4c3238c 208 LINK_STATS_INC(link.drop);
lorcansmith 0:2a53a4c3238c 209 }
lorcansmith 0:2a53a4c3238c 210
lorcansmith 0:2a53a4c3238c 211 return p;
lorcansmith 0:2a53a4c3238c 212 }
lorcansmith 0:2a53a4c3238c 213
lorcansmith 0:2a53a4c3238c 214 /**
lorcansmith 0:2a53a4c3238c 215 * This function should be called when a packet is ready to be read
lorcansmith 0:2a53a4c3238c 216 * from the interface. It uses the function low_level_input() that
lorcansmith 0:2a53a4c3238c 217 * should handle the actual reception of bytes from the network
lorcansmith 0:2a53a4c3238c 218 * interface. Then the type of the received packet is determined and
lorcansmith 0:2a53a4c3238c 219 * the appropriate input function is called.
lorcansmith 0:2a53a4c3238c 220 *
lorcansmith 0:2a53a4c3238c 221 * @param netif the lwip network interface structure for this ethernetif
lorcansmith 0:2a53a4c3238c 222 */
lorcansmith 0:2a53a4c3238c 223 static void
lorcansmith 0:2a53a4c3238c 224 ethernetif_input(struct netif *netif)
lorcansmith 0:2a53a4c3238c 225 {
lorcansmith 0:2a53a4c3238c 226 struct ethernetif *ethernetif;
lorcansmith 0:2a53a4c3238c 227 struct eth_hdr *ethhdr;
lorcansmith 0:2a53a4c3238c 228 struct pbuf *p;
lorcansmith 0:2a53a4c3238c 229
lorcansmith 0:2a53a4c3238c 230 ethernetif = netif->state;
lorcansmith 0:2a53a4c3238c 231
lorcansmith 0:2a53a4c3238c 232 /* move received packet into a new pbuf */
lorcansmith 0:2a53a4c3238c 233 p = low_level_input(netif);
lorcansmith 0:2a53a4c3238c 234 /* no packet could be read, silently ignore this */
lorcansmith 0:2a53a4c3238c 235 if (p == NULL) return;
lorcansmith 0:2a53a4c3238c 236 /* points to packet payload, which starts with an Ethernet header */
lorcansmith 0:2a53a4c3238c 237 ethhdr = p->payload;
lorcansmith 0:2a53a4c3238c 238
lorcansmith 0:2a53a4c3238c 239 switch (htons(ethhdr->type)) {
lorcansmith 0:2a53a4c3238c 240 /* IP or ARP packet? */
lorcansmith 0:2a53a4c3238c 241 case ETHTYPE_IP:
lorcansmith 0:2a53a4c3238c 242 case ETHTYPE_ARP:
lorcansmith 0:2a53a4c3238c 243 #if PPPOE_SUPPORT
lorcansmith 0:2a53a4c3238c 244 /* PPPoE packet? */
lorcansmith 0:2a53a4c3238c 245 case ETHTYPE_PPPOEDISC:
lorcansmith 0:2a53a4c3238c 246 case ETHTYPE_PPPOE:
lorcansmith 0:2a53a4c3238c 247 #endif /* PPPOE_SUPPORT */
lorcansmith 0:2a53a4c3238c 248 /* full packet send to tcpip_thread to process */
lorcansmith 0:2a53a4c3238c 249 if (netif->input(p, netif)!=ERR_OK)
lorcansmith 0:2a53a4c3238c 250 { LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\n"));
lorcansmith 0:2a53a4c3238c 251 pbuf_free(p);
lorcansmith 0:2a53a4c3238c 252 p = NULL;
lorcansmith 0:2a53a4c3238c 253 }
lorcansmith 0:2a53a4c3238c 254 break;
lorcansmith 0:2a53a4c3238c 255
lorcansmith 0:2a53a4c3238c 256 default:
lorcansmith 0:2a53a4c3238c 257 pbuf_free(p);
lorcansmith 0:2a53a4c3238c 258 p = NULL;
lorcansmith 0:2a53a4c3238c 259 break;
lorcansmith 0:2a53a4c3238c 260 }
lorcansmith 0:2a53a4c3238c 261 }
lorcansmith 0:2a53a4c3238c 262
lorcansmith 0:2a53a4c3238c 263 /**
lorcansmith 0:2a53a4c3238c 264 * Should be called at the beginning of the program to set up the
lorcansmith 0:2a53a4c3238c 265 * network interface. It calls the function low_level_init() to do the
lorcansmith 0:2a53a4c3238c 266 * actual setup of the hardware.
lorcansmith 0:2a53a4c3238c 267 *
lorcansmith 0:2a53a4c3238c 268 * This function should be passed as a parameter to netif_add().
lorcansmith 0:2a53a4c3238c 269 *
lorcansmith 0:2a53a4c3238c 270 * @param netif the lwip network interface structure for this ethernetif
lorcansmith 0:2a53a4c3238c 271 * @return ERR_OK if the loopif is initialized
lorcansmith 0:2a53a4c3238c 272 * ERR_MEM if private data couldn't be allocated
lorcansmith 0:2a53a4c3238c 273 * any other err_t on error
lorcansmith 0:2a53a4c3238c 274 */
lorcansmith 0:2a53a4c3238c 275 err_t
lorcansmith 0:2a53a4c3238c 276 ethernetif_init(struct netif *netif)
lorcansmith 0:2a53a4c3238c 277 {
lorcansmith 0:2a53a4c3238c 278 struct ethernetif *ethernetif;
lorcansmith 0:2a53a4c3238c 279
lorcansmith 0:2a53a4c3238c 280 LWIP_ASSERT("netif != NULL", (netif != NULL));
lorcansmith 0:2a53a4c3238c 281
lorcansmith 0:2a53a4c3238c 282 ethernetif = mem_malloc(sizeof(struct ethernetif));
lorcansmith 0:2a53a4c3238c 283 if (ethernetif == NULL) {
lorcansmith 0:2a53a4c3238c 284 LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_init: out of memory\n"));
lorcansmith 0:2a53a4c3238c 285 return ERR_MEM;
lorcansmith 0:2a53a4c3238c 286 }
lorcansmith 0:2a53a4c3238c 287
lorcansmith 0:2a53a4c3238c 288 #if LWIP_NETIF_HOSTNAME
lorcansmith 0:2a53a4c3238c 289 /* Initialize interface hostname */
lorcansmith 0:2a53a4c3238c 290 netif->hostname = "lwip";
lorcansmith 0:2a53a4c3238c 291 #endif /* LWIP_NETIF_HOSTNAME */
lorcansmith 0:2a53a4c3238c 292
lorcansmith 0:2a53a4c3238c 293 /*
lorcansmith 0:2a53a4c3238c 294 * Initialize the snmp variables and counters inside the struct netif.
lorcansmith 0:2a53a4c3238c 295 * The last argument should be replaced with your link speed, in units
lorcansmith 0:2a53a4c3238c 296 * of bits per second.
lorcansmith 0:2a53a4c3238c 297 */
lorcansmith 0:2a53a4c3238c 298 NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, LINK_SPEED_OF_YOUR_NETIF_IN_BPS);
lorcansmith 0:2a53a4c3238c 299
lorcansmith 0:2a53a4c3238c 300 netif->state = ethernetif;
lorcansmith 0:2a53a4c3238c 301 netif->name[0] = IFNAME0;
lorcansmith 0:2a53a4c3238c 302 netif->name[1] = IFNAME1;
lorcansmith 0:2a53a4c3238c 303 /* We directly use etharp_output() here to save a function call.
lorcansmith 0:2a53a4c3238c 304 * You can instead declare your own function an call etharp_output()
lorcansmith 0:2a53a4c3238c 305 * from it if you have to do some checks before sending (e.g. if link
lorcansmith 0:2a53a4c3238c 306 * is available...) */
lorcansmith 0:2a53a4c3238c 307 netif->output = etharp_output;
lorcansmith 0:2a53a4c3238c 308 netif->linkoutput = low_level_output;
lorcansmith 0:2a53a4c3238c 309
lorcansmith 0:2a53a4c3238c 310 ethernetif->ethaddr = (struct eth_addr *)&(netif->hwaddr[0]);
lorcansmith 0:2a53a4c3238c 311
lorcansmith 0:2a53a4c3238c 312 /* initialize the hardware */
lorcansmith 0:2a53a4c3238c 313 low_level_init(netif);
lorcansmith 0:2a53a4c3238c 314
lorcansmith 0:2a53a4c3238c 315 return ERR_OK;
lorcansmith 0:2a53a4c3238c 316 }
lorcansmith 0:2a53a4c3238c 317
lorcansmith 0:2a53a4c3238c 318 #endif /* 0 */