X-Git-Url: http://git.joshuawise.com/netwatch.git/blobdiff_plain/7a914840b833dba82398623bbde04a1744627398..3368351a230f70d5daf36464b2a473e4a8c74c8a:/net/net.c

diff --git a/net/net.c b/net/net.c
index 575b5e4..d762b47 100644
--- a/net/net.c
+++ b/net/net.c
@@ -1,28 +1,156 @@
+/* net.c
+ * Top-level network glue code
+ * NetWatch system management mode administration console
+ *
+ * Copyright (c) 2008 Jacob Potter and Joshua Wise.  All rights reserved.
+ * This program is free software; you can redistribute and/or modify it under
+ * the terms found in the file LICENSE in the root of this source tree.
+ *
+ */
+
 #include <pci.h>
+#include <smram.h>
 #include <pci-bother.h>
 #include <output.h>
+#include <minilib.h>
+#include <tables.h>
+#include <lwip/init.h>
 #include "net.h"
 
+#include "lwip/opt.h"
+#include "lwip/def.h"
+#include "lwip/mem.h"
+#include "lwip/pbuf.h"
+#include "lwip/sys.h"
+#include <lwip/stats.h>
+#include <lwip/snmp.h>
+#include <lwip/dhcp.h>
+#include <lwip/tcp.h>
+#include "netif/etharp.h"
+#include "netif/ppp_oe.h"
+
 static struct nic *_nic = 0x0;
+static struct netif _netif;
 
 extern struct pci_driver a3c90x_driver;
 
+void eth_recv(struct nic *nic, struct pbuf *p)
+{
+	struct eth_hdr *ethhdr;
+	
+	LINK_STATS_INC(link.recv);
+	
+	ethhdr = p->payload;
+	
+	switch (htons(ethhdr->type)) {
+	case ETHTYPE_IP:
+	case ETHTYPE_ARP:
+		if (_netif.input(p, &_netif) != ERR_OK)
+		{
+			LWIP_DEBUGF(NETIF_DEBUG, ("netdev_input: IP input error\n"));
+			pbuf_free(p);
+		}
+		break;
+		
+	default:
+		outputf("Unhandled packet type %04x input", ethhdr->type);
+		pbuf_free(p);
+		break;
+	}
+}
+
 void eth_poll()
 {
-	if (_nic)
-		_nic->poll(_nic, 0);
+	static int ticks = 0;
+	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... */
+	
+	if (!_nic)
+		return;
+	
+	smram_tseg_set_state(SMRAM_TSEG_OPEN);
+	
+	if ((ticks % 1000) == 0)	/* About a minute */
+		dhcp_coarse_tmr();
+	if ((ticks % 8) == 0)	/* About 500msec*/
+		dhcp_fine_tmr();
+	if ((ticks % 4) == 0)	/* About 250msec*/
+		tcp_tmr();
+	ticks++;
+
+	while (i > 0)
+	{
+		int n = _nic->recv(_nic);
+		i -= n;
+		if (n == 0)
+			break;
+	}
+}
+
+static err_t _transmit(struct netif *netif, struct pbuf *p)
+{
+	struct nic *nic = netif->state;
+
+//	outputf("NIC: Transmit packet");
+
+	nic->transmit(nic, p);
+
+	LINK_STATS_INC(link.xmit);
+
+	return ERR_OK;
+}
+
+static err_t _init(struct netif *netif)
+{
+	struct nic *nic = netif->state;
+	
+	LWIP_ASSERT("netif != NULL", (netif != NULL));
+		
+#if LWIP_NETIF_HOSTNAME
+	netif->hostname = "netwatch";
+#endif
+	
+	NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, 100000000);
+
+	netif->name[0] = 'e';
+	netif->name[1] = 'n';
+	netif->output = etharp_output;
+	netif->linkoutput = _transmit;
+	
+	memcpy(netif->hwaddr, nic->hwaddr, 6);
+	netif->mtu = 1500;
+	netif->hwaddr_len = ETHARP_HWADDR_LEN;
+	netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;
+	
+	return ERR_OK;
 }
 
 int eth_register(struct nic *nic)
 {
+	static struct ip_addr ipa = { 0 } , netmask = { 0 } , gw = { 0 };
+	
 	if (_nic)
 		return -1;
+	netif_add(&_netif, &ipa, &netmask, &gw, (void*)nic, _init, ethernet_input);
+	netif_set_default(&_netif);
+	netif_set_up(&_netif);
+	dhcp_start(&_netif);
 	_nic = nic;
 	return 0;
 }
 
+typedef void(*thunk_t)();
+
+TABLE(thunk_t, protocols);
+
 void eth_init()
 {
-	if (pci_probe_driver(a3c90x_driver))
-		outputf("found 3c90x, hopefully!");
+	int i;
+	
+	/* Required for DMA to work. :( */
+	smram_tseg_set_state(SMRAM_TSEG_OPEN);
+
+	lwip_init();
+
+	for (i = 0; i < TABLE_LENGTH(protocols); i++)
+		protocols_table[i]();
 }