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NetStack/drv/eth/eth_drv.cpp@0:1a61c61d0845, 2012-04-03 (annotated)

Committer:: dcoban
Date:: Tue Apr 03 18:43:13 2012 +0000
Revision:: 0:1a61c61d0845

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User	Revision	Line number	New contents of line
dcoban	0:1a61c61d0845	1
dcoban	0:1a61c61d0845	2	/*
dcoban	0:1a61c61d0845	3	Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
dcoban	0:1a61c61d0845	4
dcoban	0:1a61c61d0845	5	Permission is hereby granted, free of charge, to any person obtaining a copy
dcoban	0:1a61c61d0845	6	of this software and associated documentation files (the "Software"), to deal
dcoban	0:1a61c61d0845	7	in the Software without restriction, including without limitation the rights
dcoban	0:1a61c61d0845	8	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
dcoban	0:1a61c61d0845	9	copies of the Software, and to permit persons to whom the Software is
dcoban	0:1a61c61d0845	10	furnished to do so, subject to the following conditions:
dcoban	0:1a61c61d0845	11
dcoban	0:1a61c61d0845	12	The above copyright notice and this permission notice shall be included in
dcoban	0:1a61c61d0845	13	all copies or substantial portions of the Software.
dcoban	0:1a61c61d0845	14
dcoban	0:1a61c61d0845	15	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
dcoban	0:1a61c61d0845	16	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
dcoban	0:1a61c61d0845	17	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
dcoban	0:1a61c61d0845	18	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
dcoban	0:1a61c61d0845	19	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
dcoban	0:1a61c61d0845	20	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
dcoban	0:1a61c61d0845	21	THE SOFTWARE.
dcoban	0:1a61c61d0845	22	*/
dcoban	0:1a61c61d0845	23
dcoban	0:1a61c61d0845	24	#include "netCfg.h"
dcoban	0:1a61c61d0845	25	#if NET_ETH
dcoban	0:1a61c61d0845	26
dcoban	0:1a61c61d0845	27	#include "mbed.h"
dcoban	0:1a61c61d0845	28
dcoban	0:1a61c61d0845	29	Ethernet *pEth = NULL;
dcoban	0:1a61c61d0845	30	#ifdef __cplusplus
dcoban	0:1a61c61d0845	31	extern "C" {
dcoban	0:1a61c61d0845	32	#endif
dcoban	0:1a61c61d0845	33
dcoban	0:1a61c61d0845	34	#include "lwip/opt.h"
dcoban	0:1a61c61d0845	35
dcoban	0:1a61c61d0845	36	#include "lwip/def.h"
dcoban	0:1a61c61d0845	37	#include "lwip/pbuf.h"
dcoban	0:1a61c61d0845	38	#include "lwip/sys.h"
dcoban	0:1a61c61d0845	39	#include "lwip/stats.h"
dcoban	0:1a61c61d0845	40	#include "netif/etharp.h"
dcoban	0:1a61c61d0845	41	#include "string.h"
dcoban	0:1a61c61d0845	42
dcoban	0:1a61c61d0845	43	//#include "eth_drv.h"
dcoban	0:1a61c61d0845	44
dcoban	0:1a61c61d0845	45	#define IFNAME0 'E'
dcoban	0:1a61c61d0845	46	#define IFNAME1 'X'
dcoban	0:1a61c61d0845	47
dcoban	0:1a61c61d0845	48	#define min(x,y) (((x)<(y))?(x):(y))
dcoban	0:1a61c61d0845	49
dcoban	0:1a61c61d0845	50	struct netif* eth_netif;
dcoban	0:1a61c61d0845	51
dcoban	0:1a61c61d0845	52	static err_t eth_output(struct netif netif, struct pbuf p) {
dcoban	0:1a61c61d0845	53	#if ETH_PAD_SIZE
dcoban	0:1a61c61d0845	54	pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
dcoban	0:1a61c61d0845	55	#endif
dcoban	0:1a61c61d0845	56
dcoban	0:1a61c61d0845	57	do {
dcoban	0:1a61c61d0845	58	pEth->write((const char *)p->payload, p->len);
dcoban	0:1a61c61d0845	59	} while((p = p->next)!=NULL);
dcoban	0:1a61c61d0845	60
dcoban	0:1a61c61d0845	61	pEth->send();
dcoban	0:1a61c61d0845	62
dcoban	0:1a61c61d0845	63	#if ETH_PAD_SIZE
dcoban	0:1a61c61d0845	64	pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
dcoban	0:1a61c61d0845	65	#endif
dcoban	0:1a61c61d0845	66
dcoban	0:1a61c61d0845	67	LINK_STATS_INC(link.xmit);
dcoban	0:1a61c61d0845	68	return ERR_OK;
dcoban	0:1a61c61d0845	69	}
dcoban	0:1a61c61d0845	70
dcoban	0:1a61c61d0845	71	/*
dcoban	0:1a61c61d0845	72	void show(char *buf, int size) {
dcoban	0:1a61c61d0845	73	printf("Destination: %02hx:%02hx:%02hx:%02hx:%02hx:%02hx\n",
dcoban	0:1a61c61d0845	74	buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]);
dcoban	0:1a61c61d0845	75	printf("Source: %02hx:%02hx:%02hx:%02hx:%02hx:%02hx\n",
dcoban	0:1a61c61d0845	76	buf[6], buf[7], buf[8], buf[9], buf[10], buf[11]);
dcoban	0:1a61c61d0845	77
dcoban	0:1a61c61d0845	78	printf("Type %hd\n", htons((short)buf[12]));
dcoban	0:1a61c61d0845	79
dcoban	0:1a61c61d0845	80	// hexview(buf, size);
dcoban	0:1a61c61d0845	81	}
dcoban	0:1a61c61d0845	82	*/
dcoban	0:1a61c61d0845	83
dcoban	0:1a61c61d0845	84	int eth_poll() {
dcoban	0:1a61c61d0845	85	int PacketsReceived = 0;
dcoban	0:1a61c61d0845	86	struct eth_hdr *ethhdr;
dcoban	0:1a61c61d0845	87	struct pbuf frame, p;
dcoban	0:1a61c61d0845	88	int len, read;
dcoban	0:1a61c61d0845	89
dcoban	0:1a61c61d0845	90	while((len = pEth->receive()) != 0) {
dcoban	0:1a61c61d0845	91	PacketsReceived++;
dcoban	0:1a61c61d0845	92	frame = pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
dcoban	0:1a61c61d0845	93	if(frame == NULL) {
dcoban	0:1a61c61d0845	94	return PacketsReceived;
dcoban	0:1a61c61d0845	95	}
dcoban	0:1a61c61d0845	96	p = frame;
dcoban	0:1a61c61d0845	97	/* no packet could be read, silently ignore this */
dcoban	0:1a61c61d0845	98	if (p == NULL) return PacketsReceived;
dcoban	0:1a61c61d0845	99	do {
dcoban	0:1a61c61d0845	100	read = pEth->read((char *)p->payload, p->len);
dcoban	0:1a61c61d0845	101	p = p->next;
dcoban	0:1a61c61d0845	102	} while(p != NULL && read != 0);
dcoban	0:1a61c61d0845	103
dcoban	0:1a61c61d0845	104	/* Ignore this packet if it is too small to contain a valid Ethernet header. */
dcoban	0:1a61c61d0845	105	if (len < (sizeof(struct eth_hdr) + ETH_PAD_SIZE))
dcoban	0:1a61c61d0845	106	{
dcoban	0:1a61c61d0845	107	pbuf_free(frame);
dcoban	0:1a61c61d0845	108	frame = NULL;
dcoban	0:1a61c61d0845	109	continue;
dcoban	0:1a61c61d0845	110	}
dcoban	0:1a61c61d0845	111
dcoban	0:1a61c61d0845	112	#if ETH_PAD_SIZE
dcoban	0:1a61c61d0845	113	pbuf_header(p, ETH_PAD_SIZE);
dcoban	0:1a61c61d0845	114	#endif
dcoban	0:1a61c61d0845	115
dcoban	0:1a61c61d0845	116	ethhdr = (struct eth_hdr *)(frame->payload);
dcoban	0:1a61c61d0845	117
dcoban	0:1a61c61d0845	118	switch (htons(ethhdr->type)) {
dcoban	0:1a61c61d0845	119	/* IP or ARP packet? */
dcoban	0:1a61c61d0845	120	case ETHTYPE_IP:
dcoban	0:1a61c61d0845	121	case ETHTYPE_ARP:
dcoban	0:1a61c61d0845	122	#if PPPOE_SUPPORT
dcoban	0:1a61c61d0845	123	/* PPPoE packet? */
dcoban	0:1a61c61d0845	124	case ETHTYPE_PPPOEDISC:
dcoban	0:1a61c61d0845	125	case ETHTYPE_PPPOE:
dcoban	0:1a61c61d0845	126	#endif /* PPPOE_SUPPORT */
dcoban	0:1a61c61d0845	127	/* full packet send to tcpip_thread to process */
dcoban	0:1a61c61d0845	128	//if (netif->input(p, gnetif)!=ERR_OK)
dcoban	0:1a61c61d0845	129	if (ethernet_input(frame, eth_netif)!=ERR_OK)
dcoban	0:1a61c61d0845	130	{ LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\n"));
dcoban	0:1a61c61d0845	131	pbuf_free(frame);
dcoban	0:1a61c61d0845	132	frame = NULL;
dcoban	0:1a61c61d0845	133	}
dcoban	0:1a61c61d0845	134	break;
dcoban	0:1a61c61d0845	135
dcoban	0:1a61c61d0845	136	default:
dcoban	0:1a61c61d0845	137	pbuf_free(frame);
dcoban	0:1a61c61d0845	138	frame = NULL;
dcoban	0:1a61c61d0845	139	break;
dcoban	0:1a61c61d0845	140	}
dcoban	0:1a61c61d0845	141	}
dcoban	0:1a61c61d0845	142
dcoban	0:1a61c61d0845	143	return PacketsReceived;
dcoban	0:1a61c61d0845	144	}
dcoban	0:1a61c61d0845	145
dcoban	0:1a61c61d0845	146	err_t eth_init(struct netif *netif) {
dcoban	0:1a61c61d0845	147	LWIP_ASSERT("netif != NULL", (netif != NULL));
dcoban	0:1a61c61d0845	148
dcoban	0:1a61c61d0845	149	NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, 0x2EA);
dcoban	0:1a61c61d0845	150
dcoban	0:1a61c61d0845	151	/* maximum transfer unit */
dcoban	0:1a61c61d0845	152	netif->mtu = 0x2EA;
dcoban	0:1a61c61d0845	153
dcoban	0:1a61c61d0845	154	/* device capabilities */
dcoban	0:1a61c61d0845	155	/* don't set NETIF_FLAG_ETHARP if this device is not an ethernet one */
dcoban	0:1a61c61d0845	156	netif->flags = NETIF_FLAG_BROADCAST \| NETIF_FLAG_ETHARP \| NETIF_FLAG_LINK_UP \| NETIF_FLAG_IGMP;
dcoban	0:1a61c61d0845	157
dcoban	0:1a61c61d0845	158	netif->state = NULL;
dcoban	0:1a61c61d0845	159	eth_netif = netif;
dcoban	0:1a61c61d0845	160
dcoban	0:1a61c61d0845	161	netif->name[0] = IFNAME0;
dcoban	0:1a61c61d0845	162	netif->name[1] = IFNAME1;
dcoban	0:1a61c61d0845	163
dcoban	0:1a61c61d0845	164	/* We directly use etharp_output() here to save a function call.
dcoban	0:1a61c61d0845	165	* You can instead declare your own function an call etharp_output()
dcoban	0:1a61c61d0845	166	* from it if you have to do some checks before sending (e.g. if link
dcoban	0:1a61c61d0845	167	* is available...) */
dcoban	0:1a61c61d0845	168	netif->output = etharp_output;
dcoban	0:1a61c61d0845	169	netif->linkoutput = eth_output;
dcoban	0:1a61c61d0845	170
dcoban	0:1a61c61d0845	171	if (!pEth) pEth = new Ethernet(); // only create Ethernet object if required
dcoban	0:1a61c61d0845	172
dcoban	0:1a61c61d0845	173	// UNDONE: Remove. Just for debug
dcoban	0:1a61c61d0845	174	pEth->set_link(Ethernet::HalfDuplex100);
dcoban	0:1a61c61d0845	175
dcoban	0:1a61c61d0845	176	return ERR_OK;
dcoban	0:1a61c61d0845	177	}
dcoban	0:1a61c61d0845	178
dcoban	0:1a61c61d0845	179	void eth_free()
dcoban	0:1a61c61d0845	180	{
dcoban	0:1a61c61d0845	181	if(pEth)
dcoban	0:1a61c61d0845	182	delete pEth;
dcoban	0:1a61c61d0845	183	pEth = NULL;
dcoban	0:1a61c61d0845	184	}
dcoban	0:1a61c61d0845	185
dcoban	0:1a61c61d0845	186	void eth_address(char* mac) {
dcoban	0:1a61c61d0845	187	pEth->address(mac);
dcoban	0:1a61c61d0845	188	}
dcoban	0:1a61c61d0845	189
dcoban	0:1a61c61d0845	190	Ethernet* eth_interface() {
dcoban	0:1a61c61d0845	191	return pEth;
dcoban	0:1a61c61d0845	192	}
dcoban	0:1a61c61d0845	193
dcoban	0:1a61c61d0845	194	#ifdef __cplusplus
dcoban	0:1a61c61d0845	195	};
dcoban	0:1a61c61d0845	196	#endif
dcoban	0:1a61c61d0845	197
dcoban	0:1a61c61d0845	198	#endif

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	03 Apr 2012
Imports:	2
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	4
Followers:	1

NetStack/drv/eth/eth_drv.cpp@0:1a61c61d0845, 2012-04-03 (annotated)

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