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

... / ...

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 <lwip/init.h>
	17	#include "net.h"
	18
	19	#include "lwip/opt.h"
	20	#include "lwip/def.h"
	21	#include "lwip/mem.h"
	22	#include "lwip/pbuf.h"
	23	#include "lwip/sys.h"
	24	#include <lwip/stats.h>
	25	#include <lwip/snmp.h>
	26	#include <lwip/dhcp.h>
	27	#include <lwip/tcp.h>
	28	#include "netif/etharp.h"
	29	#include "netif/ppp_oe.h"
	30
	31	#include "rfb.h"
	32
	33	static struct nic *_nic = 0x0;
	34	static struct netif _netif;
	35
	36	extern struct pci_driver a3c90x_driver;
	37
	38	void eth_recv(struct nic nic, struct pbuf p)
	39	{
	40	struct eth_hdr *ethhdr;
	41
	42	LINK_STATS_INC(link.recv);
	43
	44	ethhdr = p->payload;
	45
	46	switch (htons(ethhdr->type)) {
	47	case ETHTYPE_IP:
	48	case ETHTYPE_ARP:
	49	if (_netif.input(p, &_netif) != ERR_OK)
	50	{
	51	LWIP_DEBUGF(NETIF_DEBUG, ("netdev_input: IP input error\n"));
	52	pbuf_free(p);
	53	}
	54	break;
	55
	56	default:
	57	outputf("Unhandled packet type %04x input", ethhdr->type);
	58	pbuf_free(p);
	59	break;
	60	}
	61	}
	62
	63	void eth_poll()
	64	{
	65	static int ticks = 0;
	66	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... */
	67
	68	if (!_nic)
	69	return;
	70
	71	smram_tseg_set_state(SMRAM_TSEG_OPEN);
	72
	73	if ((ticks % 1000) == 0) /* About a minute */
	74	dhcp_coarse_tmr();
	75	if ((ticks % 8) == 0) /* About 500msec*/
	76	dhcp_fine_tmr();
	77	if ((ticks % 4) == 0) /* About 250msec*/
	78	tcp_tmr();
	79	ticks++;
	80
	81	while (i > 0)
	82	{
	83	int n = _nic->recv(_nic);
	84	i -= n;
	85	if (n == 0)
	86	break;
	87	}
	88	}
	89
	90	static err_t _transmit(struct netif netif, struct pbuf p)
	91	{
	92	struct nic *nic = netif->state;
	93
	94	// outputf("NIC: Transmit packet");
	95
	96	nic->transmit(nic, p);
	97
	98	LINK_STATS_INC(link.xmit);
	99
	100	return ERR_OK;
	101	}
	102
	103	static err_t _init(struct netif *netif)
	104	{
	105	struct nic *nic = netif->state;
	106
	107	LWIP_ASSERT("netif != NULL", (netif != NULL));
	108
	109	#if LWIP_NETIF_HOSTNAME
	110	netif->hostname = "netwatch";
	111	#endif
	112
	113	NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, 100000000);
	114
	115	netif->name[0] = 'e';
	116	netif->name[1] = 'n';
	117	netif->output = etharp_output;
	118	netif->linkoutput = _transmit;
	119
	120	memcpy(netif->hwaddr, nic->hwaddr, 6);
	121	netif->mtu = 1500;
	122	netif->hwaddr_len = ETHARP_HWADDR_LEN;
	123	netif->flags = NETIF_FLAG_BROADCAST \| NETIF_FLAG_ETHARP \| NETIF_FLAG_LINK_UP;
	124
	125	return ERR_OK;
	126	}
	127
	128	int eth_register(struct nic *nic)
	129	{
	130	static struct ip_addr ipa = { 0 } , netmask = { 0 } , gw = { 0 };
	131
	132	if (_nic)
	133	return -1;
	134	netif_add(&_netif, &ipa, &netmask, &gw, (void*)nic, _init, ethernet_input);
	135	netif_set_default(&_netif);
	136	netif_set_up(&_netif);
	137	dhcp_start(&_netif);
	138	_nic = nic;
	139	return 0;
	140	}
	141
	142	void eth_init()
	143	{
	144	extern void httpd_init();
	145
	146	/* Required for DMA to work. :( */
	147	smram_tseg_set_state(SMRAM_TSEG_OPEN);
	148	lwip_init();
	149	httpd_init();
	150
	151	rfb_init();
	152
	153	}