Joshua Wise's Git repositories - netwatch.git/blame_incremental

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Commit	Line	Data
	1	/* net.c
	2	* Top-level network glue code
	3	* NetWatch system management mode administration console
	4	*
	5	* Copyright (c) 2008 Jacob Potter and Joshua Wise. All rights reserved.
	6	* This program is free software; you can redistribute and/or modify it under
	7	* the terms found in the file LICENSE in the root of this source tree.
	8	*
	9	*/
	10
	11	#include <pci.h>
	12	#include <smram.h>
	13	#include <pci-bother.h>
	14	#include <output.h>
	15	#include <minilib.h>
	16	#include <tables.h>
	17	#include <lwip/init.h>
	18	#include "net.h"
	19
	20	#include "lwip/opt.h"
	21	#include "lwip/def.h"
	22	#include "lwip/mem.h"
	23	#include "lwip/pbuf.h"
	24	#include "lwip/sys.h"
	25	#include <lwip/stats.h>
	26	#include <lwip/snmp.h>
	27	#include <lwip/dhcp.h>
	28	#include <lwip/tcp.h>
	29	#include "netif/etharp.h"
	30	#include "netif/ppp_oe.h"
	31
	32	static struct nic *_nic = 0x0;
	33	static struct netif _netif;
	34
	35	extern struct pci_driver a3c90x_driver;
	36
	37	void eth_recv(struct nic nic, struct pbuf p)
	38	{
	39	struct eth_hdr *ethhdr;
	40
	41	LINK_STATS_INC(link.recv);
	42
	43	ethhdr = p->payload;
	44
	45	switch (htons(ethhdr->type)) {
	46	case ETHTYPE_IP:
	47	case ETHTYPE_ARP:
	48	if (_netif.input(p, &_netif) != ERR_OK)
	49	{
	50	LWIP_DEBUGF(NETIF_DEBUG, ("netdev_input: IP input error\n"));
	51	pbuf_free(p);
	52	}
	53	break;
	54
	55	default:
	56	outputf("Unhandled packet type %04x input", ethhdr->type);
	57	pbuf_free(p);
	58	break;
	59	}
	60	}
	61
	62	void eth_poll()
	63	{
	64	static int ticks = 0;
	65	int i = 15; /* Don't process more than 15 packets at a time; we don't want the host to get TOO badly slowed down... */
	66
	67	if (!_nic)
	68	return;
	69
	70	smram_tseg_set_state(SMRAM_TSEG_OPEN);
	71
	72	if ((ticks % 1000) == 0) /* About a minute */
	73	dhcp_coarse_tmr();
	74	if ((ticks % 8) == 0) /* About 500msec*/
	75	dhcp_fine_tmr();
	76	if ((ticks % 4) == 0) /* About 250msec*/
	77	tcp_tmr();
	78	ticks++;
	79
	80	while (i > 0)
	81	{
	82	int n = _nic->recv(_nic);
	83	i -= n;
	84	if (n == 0)
	85	break;
	86	}
	87	}
	88
	89	static err_t _transmit(struct netif netif, struct pbuf p)
	90	{
	91	struct nic *nic = netif->state;
	92
	93	// outputf("NIC: Transmit packet");
	94
	95	nic->transmit(nic, p);
	96
	97	LINK_STATS_INC(link.xmit);
	98
	99	return ERR_OK;
	100	}
	101
	102	static err_t _init(struct netif *netif)
	103	{
	104	struct nic *nic = netif->state;
	105
	106	LWIP_ASSERT("netif != NULL", (netif != NULL));
	107
	108	#if LWIP_NETIF_HOSTNAME
	109	netif->hostname = "netwatch";
	110	#endif
	111
	112	NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, 100000000);
	113
	114	netif->name[0] = 'e';
	115	netif->name[1] = 'n';
	116	netif->output = etharp_output;
	117	netif->linkoutput = _transmit;
	118
	119	memcpy(netif->hwaddr, nic->hwaddr, 6);
	120	netif->mtu = 1500;
	121	netif->hwaddr_len = ETHARP_HWADDR_LEN;
	122	netif->flags = NETIF_FLAG_BROADCAST \| NETIF_FLAG_ETHARP \| NETIF_FLAG_LINK_UP;
	123
	124	return ERR_OK;
	125	}
	126
	127	int eth_register(struct nic *nic)
	128	{
	129	static struct ip_addr ipa = { 0 } , netmask = { 0 } , gw = { 0 };
	130
	131	if (_nic)
	132	return -1;
	133	netif_add(&_netif, &ipa, &netmask, &gw, (void*)nic, _init, ethernet_input);
	134	netif_set_default(&_netif);
	135	netif_set_up(&_netif);
	136	dhcp_start(&_netif);
	137	_nic = nic;
	138	return 0;
	139	}
	140
	141	typedef void(*thunk_t)();
	142
	143	TABLE(thunk_t, protocols);
	144
	145	void eth_init()
	146	{
	147	int i;
	148
	149	/* Required for DMA to work. :( */
	150	smram_tseg_set_state(SMRAM_TSEG_OPEN);
	151
	152	lwip_init();
	153
	154	for (i = 0; i < TABLE_LENGTH(protocols); i++)
	155	protocols_table[i]();
	156	}