Rod Coleman / lwip-mbed-2010

Port of LwIP performed by Ralf in 2010. Not recommended for use with recent mbed libraries, but good demos of raw LwIP possible

Dependents:   LwIP_raw_API_serverExample tiny-dtls

Core/device.cpp@0:0791c1fece8e, 2012-09-18 (annotated)

Committer:
RodColeman
Date:
Tue Sep 18 14:41:24 2012 +0000
Revision:
0:0791c1fece8e
[mbed] converted /Eth_TCP_Wei_Server/lwip

Who changed what in which revision?

UserRevisionLine numberNew contents of line
RodColeman 0:0791c1fece8e 1 #include "mbed.h"
RodColeman 0:0791c1fece8e 2
RodColeman 0:0791c1fece8e 3 using namespace mbed;
RodColeman 0:0791c1fece8e 4
RodColeman 0:0791c1fece8e 5 Ethernet *eth;
RodColeman 0:0791c1fece8e 6 #ifdef __cplusplus
RodColeman 0:0791c1fece8e 7 extern "C" {
RodColeman 0:0791c1fece8e 8 #endif
RodColeman 0:0791c1fece8e 9
RodColeman 0:0791c1fece8e 10 #include "lwip/opt.h"
RodColeman 0:0791c1fece8e 11
RodColeman 0:0791c1fece8e 12 #include "lwip/def.h"
RodColeman 0:0791c1fece8e 13 #include "lwip/pbuf.h"
RodColeman 0:0791c1fece8e 14 #include "lwip/sys.h"
RodColeman 0:0791c1fece8e 15 #include "lwip/stats.h"
RodColeman 0:0791c1fece8e 16 #include "netif/etharp.h"
RodColeman 0:0791c1fece8e 17 #include "string.h"
RodColeman 0:0791c1fece8e 18
RodColeman 0:0791c1fece8e 19 #define IFNAME0 'E'
RodColeman 0:0791c1fece8e 20 #define IFNAME1 'X'
RodColeman 0:0791c1fece8e 21
RodColeman 0:0791c1fece8e 22 #define min(x,y) (((x)<(y))?(x):(y))
RodColeman 0:0791c1fece8e 23
RodColeman 0:0791c1fece8e 24 struct netif *gnetif;
RodColeman 0:0791c1fece8e 25
RodColeman 0:0791c1fece8e 26 static err_t device_output(struct netif *netif, struct pbuf *p) {
RodColeman 0:0791c1fece8e 27 #if ETH_PAD_SIZE
RodColeman 0:0791c1fece8e 28 pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
RodColeman 0:0791c1fece8e 29 #endif
RodColeman 0:0791c1fece8e 30
RodColeman 0:0791c1fece8e 31 do {
RodColeman 0:0791c1fece8e 32 eth->write((const char *)p->payload, p->len);
RodColeman 0:0791c1fece8e 33 } while((p = p->next)!=NULL);
RodColeman 0:0791c1fece8e 34
RodColeman 0:0791c1fece8e 35 eth->send();
RodColeman 0:0791c1fece8e 36
RodColeman 0:0791c1fece8e 37 #if ETH_PAD_SIZE
RodColeman 0:0791c1fece8e 38 pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
RodColeman 0:0791c1fece8e 39 #endif
RodColeman 0:0791c1fece8e 40
RodColeman 0:0791c1fece8e 41 LINK_STATS_INC(link.xmit);
RodColeman 0:0791c1fece8e 42 return ERR_OK;
RodColeman 0:0791c1fece8e 43 }
RodColeman 0:0791c1fece8e 44
RodColeman 0:0791c1fece8e 45 void device_poll() {
RodColeman 0:0791c1fece8e 46 struct eth_hdr *ethhdr;
RodColeman 0:0791c1fece8e 47 struct pbuf *frame, *p;
RodColeman 0:0791c1fece8e 48 int len, read;
RodColeman 0:0791c1fece8e 49
RodColeman 0:0791c1fece8e 50 while((len = eth->receive()) != 0) {
RodColeman 0:0791c1fece8e 51 frame = pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
RodColeman 0:0791c1fece8e 52 if(frame == NULL) {
RodColeman 0:0791c1fece8e 53 return;
RodColeman 0:0791c1fece8e 54 }
RodColeman 0:0791c1fece8e 55 p = frame;
RodColeman 0:0791c1fece8e 56 do {
RodColeman 0:0791c1fece8e 57 read = eth->read((char *)p->payload, p->len);
RodColeman 0:0791c1fece8e 58 p = p->next;
RodColeman 0:0791c1fece8e 59 } while(p != NULL && read != 0);
RodColeman 0:0791c1fece8e 60
RodColeman 0:0791c1fece8e 61 #if ETH_PAD_SIZE
RodColeman 0:0791c1fece8e 62 pbuf_header(p, ETH_PAD_SIZE);
RodColeman 0:0791c1fece8e 63 #endif
RodColeman 0:0791c1fece8e 64
RodColeman 0:0791c1fece8e 65 ethhdr = (struct eth_hdr *)(frame->payload);
RodColeman 0:0791c1fece8e 66
RodColeman 0:0791c1fece8e 67 switch(htons(ethhdr->type)) {
RodColeman 0:0791c1fece8e 68
RodColeman 0:0791c1fece8e 69 case ETHTYPE_IP:
RodColeman 0:0791c1fece8e 70 etharp_ip_input(gnetif, frame);
RodColeman 0:0791c1fece8e 71 pbuf_header(frame, -((s16_t) sizeof(struct eth_hdr)));
RodColeman 0:0791c1fece8e 72 gnetif->input(frame, gnetif);
RodColeman 0:0791c1fece8e 73 break;
RodColeman 0:0791c1fece8e 74
RodColeman 0:0791c1fece8e 75 case ETHTYPE_ARP:
RodColeman 0:0791c1fece8e 76 etharp_arp_input(gnetif, (struct eth_addr *)(gnetif->hwaddr), frame);
RodColeman 0:0791c1fece8e 77 break;
RodColeman 0:0791c1fece8e 78
RodColeman 0:0791c1fece8e 79 default:
RodColeman 0:0791c1fece8e 80 break;
RodColeman 0:0791c1fece8e 81 }
RodColeman 0:0791c1fece8e 82 pbuf_free(frame);
RodColeman 0:0791c1fece8e 83 }
RodColeman 0:0791c1fece8e 84 }
RodColeman 0:0791c1fece8e 85
RodColeman 0:0791c1fece8e 86 err_t device_init(struct netif *netif) {
RodColeman 0:0791c1fece8e 87 LWIP_ASSERT("netif != NULL", (netif != NULL));
RodColeman 0:0791c1fece8e 88
RodColeman 0:0791c1fece8e 89 NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, 0x2EA);
RodColeman 0:0791c1fece8e 90
RodColeman 0:0791c1fece8e 91 /* maximum transfer unit */
RodColeman 0:0791c1fece8e 92 netif->mtu = 0x2EA;
RodColeman 0:0791c1fece8e 93
RodColeman 0:0791c1fece8e 94 /* device capabilities */
RodColeman 0:0791c1fece8e 95 /* don't set NETIF_FLAG_ETHARP if this device is not an ethernet one */
RodColeman 0:0791c1fece8e 96 netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;
RodColeman 0:0791c1fece8e 97
RodColeman 0:0791c1fece8e 98 netif->state = NULL;
RodColeman 0:0791c1fece8e 99 gnetif = netif;
RodColeman 0:0791c1fece8e 100
RodColeman 0:0791c1fece8e 101 netif->name[0] = IFNAME0;
RodColeman 0:0791c1fece8e 102 netif->name[1] = IFNAME1;
RodColeman 0:0791c1fece8e 103
RodColeman 0:0791c1fece8e 104 /* We directly use etharp_output() here to save a function call.
RodColeman 0:0791c1fece8e 105 * You can instead declare your own function an call etharp_output()
RodColeman 0:0791c1fece8e 106 * from it if you have to do some checks before sending (e.g. if link
RodColeman 0:0791c1fece8e 107 * is available...) */
RodColeman 0:0791c1fece8e 108 netif->output = etharp_output;
RodColeman 0:0791c1fece8e 109 netif->linkoutput = device_output;
RodColeman 0:0791c1fece8e 110
RodColeman 0:0791c1fece8e 111 eth = new Ethernet();
RodColeman 0:0791c1fece8e 112
RodColeman 0:0791c1fece8e 113 return ERR_OK;
RodColeman 0:0791c1fece8e 114 }
RodColeman 0:0791c1fece8e 115
RodColeman 0:0791c1fece8e 116 void device_address(char *mac) {
RodColeman 0:0791c1fece8e 117 eth->address(mac);
RodColeman 0:0791c1fece8e 118 }
RodColeman 0:0791c1fece8e 119
RodColeman 0:0791c1fece8e 120 #ifdef __cplusplus
RodColeman 0:0791c1fece8e 121 };
RodColeman 0:0791c1fece8e 122 #endif