120 lines
3.4 KiB
C
120 lines
3.4 KiB
C
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void eth_mac_irq()
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{
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/* Service MAC IRQ here */
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/* Allocate pbuf from pool (avoid using heap in interrupts) */
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struct pbuf *p = pbuf_alloc(PBUF_RAW, eth_data_count, PBUF_POOL);
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if (p != NULL) {
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/* Copy ethernet frame into pbuf */
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pbuf_take(p, eth_data, eth_data_count);
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/* Put in a queue which is processed in main loop */
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if (!queue_try_put(&queue, p)) {
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/* queue is full -> packet loss */
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pbuf_free(p);
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}
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}
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}
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static err_t netif_output(struct netif *netif, struct pbuf *p)
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{
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LINK_STATS_INC(link.xmit);
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/* Update SNMP stats (only if you use SNMP) */
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MIB2_STATS_NETIF_ADD(netif, ifoutoctets, p->tot_len);
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int unicast = ((p->payload[0] & 0x01) == 0);
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if (unicast) {
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MIB2_STATS_NETIF_INC(netif, ifoutucastpkts);
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} else {
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MIB2_STATS_NETIF_INC(netif, ifoutnucastpkts);
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}
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lock_interrupts();
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pbuf_copy_partial(p, mac_send_buffer, p->tot_len, 0);
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/* Start MAC transmit here */
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unlock_interrupts();
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return ERR_OK;
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}
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static void netif_status_callback(struct netif *netif)
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{
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printf("netif status changed %s\n", ip4addr_ntoa(netif_ip4_addr(netif)));
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}
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static err_t netif_init(struct netif *netif)
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{
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netif->linkoutput = netif_output;
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netif->output = etharp_output;
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netif->output_ip6 = ethip6_output;
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netif->mtu = ETHERNET_MTU;
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netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET | NETIF_FLAG_IGMP | NETIF_FLAG_MLD6;
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MIB2_INIT_NETIF(netif, snmp_ifType_ethernet_csmacd, 100000000);
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SMEMCPY(netif->hwaddr, your_mac_address_goes_here, ETH_HWADDR_LEN);
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netif->hwaddr_len = ETH_HWADDR_LEN;
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return ERR_OK;
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}
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void main(void)
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{
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struct netif netif;
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lwip_init();
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netif_add(&netif, IP4_ADDR_ANY, IP4_ADDR_ANY, IP4_ADDR_ANY, NULL, netif_init, netif_input);
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netif.name[0] = 'e';
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netif.name[1] = '0';
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netif_create_ip6_linklocal_address(&netif, 1);
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netif.ip6_autoconfig_enabled = 1;
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netif_set_status_callback(&netif, netif_status_callback);
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netif_set_default(&netif);
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netif_set_up(&netif);
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/* Start DHCP and HTTPD */
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dhcp_start(&netif);
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httpd_init();
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while (1) {
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/* Check link state, e.g. via MDIO communication with PHY */
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if (link_state_changed()) {
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if (link_is_up()) {
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netif_set_link_up(&netif);
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} else {
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netif_set_link_down(&netif);
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}
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}
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/* Check for received frames, feed them to lwIP */
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lock_interrupts();
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struct pbuf *p = queue_try_get(&queue);
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unlock_interrupts();
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if (p != NULL) {
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LINK_STATS_INC(link.recv);
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/* Update SNMP stats (only if you use SNMP) */
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MIB2_STATS_NETIF_ADD(netif, ifinoctets, p->tot_len);
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int unicast = ((p->payload[0] & 0x01) == 0);
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if (unicast) {
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MIB2_STATS_NETIF_INC(netif, ifinucastpkts);
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} else {
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MIB2_STATS_NETIF_INC(netif, ifinnucastpkts);
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}
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if (netif.input(p, &netif) != ERR_OK) {
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pbuf_free(p);
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}
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}
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/* Cyclic lwIP timers check */
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sys_check_timeouts();
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/* your application goes here */
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}
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}
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