mbed unsupported / lwip

A version of LWIP, provided for backwards compatibility.

Dependents:   AA_DemoBoard DemoBoard HelloServerDemo DemoBoard_RangeIndicator ... more

trunk/Core/device.cpp@0:5e1631496985, 2012-05-08 (annotated)

Committer:
root@mbed.org
Date:
Tue May 08 15:32:10 2012 +0100
Revision:
0:5e1631496985
initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
root@mbed.org 0:5e1631496985 1 #include "mbed.h"
root@mbed.org 0:5e1631496985 2
root@mbed.org 0:5e1631496985 3 using namespace mbed;
root@mbed.org 0:5e1631496985 4
root@mbed.org 0:5e1631496985 5 Ethernet *eth;
root@mbed.org 0:5e1631496985 6 #ifdef __cplusplus
root@mbed.org 0:5e1631496985 7 extern "C" {
root@mbed.org 0:5e1631496985 8 #endif
root@mbed.org 0:5e1631496985 9
root@mbed.org 0:5e1631496985 10 #include "lwip/opt.h"
root@mbed.org 0:5e1631496985 11
root@mbed.org 0:5e1631496985 12 #include "lwip/def.h"
root@mbed.org 0:5e1631496985 13 #include "lwip/pbuf.h"
root@mbed.org 0:5e1631496985 14 #include "lwip/sys.h"
root@mbed.org 0:5e1631496985 15 #include "lwip/stats.h"
root@mbed.org 0:5e1631496985 16 #include "netif/etharp.h"
root@mbed.org 0:5e1631496985 17 #include "string.h"
root@mbed.org 0:5e1631496985 18
root@mbed.org 0:5e1631496985 19 #define IFNAME0 'E'
root@mbed.org 0:5e1631496985 20 #define IFNAME1 'X'
root@mbed.org 0:5e1631496985 21
root@mbed.org 0:5e1631496985 22 #define min(x,y) (((x)<(y))?(x):(y))
root@mbed.org 0:5e1631496985 23
root@mbed.org 0:5e1631496985 24 struct netif *gnetif;
root@mbed.org 0:5e1631496985 25
root@mbed.org 0:5e1631496985 26 static err_t device_output(struct netif *netif, struct pbuf *p) {
root@mbed.org 0:5e1631496985 27 #if ETH_PAD_SIZE
root@mbed.org 0:5e1631496985 28 pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
root@mbed.org 0:5e1631496985 29 #endif
root@mbed.org 0:5e1631496985 30
root@mbed.org 0:5e1631496985 31 do {
root@mbed.org 0:5e1631496985 32 eth->write((const char *)p->payload, p->len);
root@mbed.org 0:5e1631496985 33 } while((p = p->next)!=NULL);
root@mbed.org 0:5e1631496985 34
root@mbed.org 0:5e1631496985 35 eth->send();
root@mbed.org 0:5e1631496985 36
root@mbed.org 0:5e1631496985 37 #if ETH_PAD_SIZE
root@mbed.org 0:5e1631496985 38 pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
root@mbed.org 0:5e1631496985 39 #endif
root@mbed.org 0:5e1631496985 40
root@mbed.org 0:5e1631496985 41 LINK_STATS_INC(link.xmit);
root@mbed.org 0:5e1631496985 42 return ERR_OK;
root@mbed.org 0:5e1631496985 43 }
root@mbed.org 0:5e1631496985 44
root@mbed.org 0:5e1631496985 45 void device_poll() {
root@mbed.org 0:5e1631496985 46 struct eth_hdr *ethhdr;
root@mbed.org 0:5e1631496985 47 struct pbuf *frame, *p;
root@mbed.org 0:5e1631496985 48 int len, read;
root@mbed.org 0:5e1631496985 49
root@mbed.org 0:5e1631496985 50 while((len = eth->receive()) != 0) {
root@mbed.org 0:5e1631496985 51 frame = pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
root@mbed.org 0:5e1631496985 52 if(frame == NULL) {
root@mbed.org 0:5e1631496985 53 return;
root@mbed.org 0:5e1631496985 54 }
root@mbed.org 0:5e1631496985 55 p = frame;
root@mbed.org 0:5e1631496985 56 do {
root@mbed.org 0:5e1631496985 57 read = eth->read((char *)p->payload, p->len);
root@mbed.org 0:5e1631496985 58 p = p->next;
root@mbed.org 0:5e1631496985 59 } while(p != NULL && read != 0);
root@mbed.org 0:5e1631496985 60
root@mbed.org 0:5e1631496985 61 #if ETH_PAD_SIZE
root@mbed.org 0:5e1631496985 62 pbuf_header(p, ETH_PAD_SIZE);
root@mbed.org 0:5e1631496985 63 #endif
root@mbed.org 0:5e1631496985 64
root@mbed.org 0:5e1631496985 65 ethhdr = (struct eth_hdr *)(frame->payload);
root@mbed.org 0:5e1631496985 66
root@mbed.org 0:5e1631496985 67 switch(htons(ethhdr->type)) {
root@mbed.org 0:5e1631496985 68
root@mbed.org 0:5e1631496985 69 case ETHTYPE_IP:
root@mbed.org 0:5e1631496985 70 etharp_ip_input(gnetif, frame);
root@mbed.org 0:5e1631496985 71 pbuf_header(frame, -((s16_t) sizeof(struct eth_hdr)));
root@mbed.org 0:5e1631496985 72 gnetif->input(frame, gnetif);
root@mbed.org 0:5e1631496985 73 break;
root@mbed.org 0:5e1631496985 74
root@mbed.org 0:5e1631496985 75 case ETHTYPE_ARP:
root@mbed.org 0:5e1631496985 76 etharp_arp_input(gnetif, (struct eth_addr *)(gnetif->hwaddr), frame);
root@mbed.org 0:5e1631496985 77 break;
root@mbed.org 0:5e1631496985 78
root@mbed.org 0:5e1631496985 79 default:
root@mbed.org 0:5e1631496985 80 break;
root@mbed.org 0:5e1631496985 81 }
root@mbed.org 0:5e1631496985 82 pbuf_free(frame);
root@mbed.org 0:5e1631496985 83 }
root@mbed.org 0:5e1631496985 84 }
root@mbed.org 0:5e1631496985 85
root@mbed.org 0:5e1631496985 86 err_t device_init(struct netif *netif) {
root@mbed.org 0:5e1631496985 87 LWIP_ASSERT("netif != NULL", (netif != NULL));
root@mbed.org 0:5e1631496985 88
root@mbed.org 0:5e1631496985 89 NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, 0x2EA);
root@mbed.org 0:5e1631496985 90
root@mbed.org 0:5e1631496985 91 /* maximum transfer unit */
root@mbed.org 0:5e1631496985 92 netif->mtu = 0x2EA;
root@mbed.org 0:5e1631496985 93
root@mbed.org 0:5e1631496985 94 /* device capabilities */
root@mbed.org 0:5e1631496985 95 /* don't set NETIF_FLAG_ETHARP if this device is not an ethernet one */
root@mbed.org 0:5e1631496985 96 netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;
root@mbed.org 0:5e1631496985 97
root@mbed.org 0:5e1631496985 98 netif->state = NULL;
root@mbed.org 0:5e1631496985 99 gnetif = netif;
root@mbed.org 0:5e1631496985 100
root@mbed.org 0:5e1631496985 101 netif->name[0] = IFNAME0;
root@mbed.org 0:5e1631496985 102 netif->name[1] = IFNAME1;
root@mbed.org 0:5e1631496985 103
root@mbed.org 0:5e1631496985 104 /* We directly use etharp_output() here to save a function call.
root@mbed.org 0:5e1631496985 105 * You can instead declare your own function an call etharp_output()
root@mbed.org 0:5e1631496985 106 * from it if you have to do some checks before sending (e.g. if link
root@mbed.org 0:5e1631496985 107 * is available...) */
root@mbed.org 0:5e1631496985 108 netif->output = etharp_output;
root@mbed.org 0:5e1631496985 109 netif->linkoutput = device_output;
root@mbed.org 0:5e1631496985 110
root@mbed.org 0:5e1631496985 111 eth = new Ethernet();
root@mbed.org 0:5e1631496985 112
root@mbed.org 0:5e1631496985 113 return ERR_OK;
root@mbed.org 0:5e1631496985 114 }
root@mbed.org 0:5e1631496985 115
root@mbed.org 0:5e1631496985 116 void device_address(char *mac) {
root@mbed.org 0:5e1631496985 117 eth->address(mac);
root@mbed.org 0:5e1631496985 118 }
root@mbed.org 0:5e1631496985 119
root@mbed.org 0:5e1631496985 120 #ifdef __cplusplus
root@mbed.org 0:5e1631496985 121 };
root@mbed.org 0:5e1631496985 122 #endif