Slightly permute the USB_LEGKEY stuff.

[netwatch.git] / net / net.c

diff --git a/net/net.c b/net/net.c
index f920dbc6d58f527e436b56a5c3e9481b06eb8ec8..d762b47fa85c9949b74dcc9595c02217e85cb07b 100644 (file)
--- a/net/net.c
+++ b/net/net.c
@@ -1,8 +1,19 @@
+/* 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"
 
@@ -23,57 +34,14 @@ static struct netif _netif;
 
 extern struct pci_driver a3c90x_driver;
 
-void eth_poll()
+void eth_recv(struct nic *nic, struct pbuf *p)
 {
-       unsigned char pkt[1600];
-       int len;
-       struct pbuf *p, *q;
        struct eth_hdr *ethhdr;
-       int pos = 0;
-       static int ticks = 0;
-       
-       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++;
-
-       if (!_nic->poll(_nic, 0))
-               return;
-       
-       _nic->packet = pkt;
-       _nic->poll(_nic, 1);
        
-       len = _nic->packetlen;
-
-       outputf("NIC: Packet: %d bytes", len);
-               
-       p = pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
-       if (p == NULL)
-       {
-               outputf("NIC: out of memory for packet?");
-               LINK_STATS_INC(link.memerr);
-               LINK_STATS_INC(link.drop);
-               return;
-       }
-       
-       for(q = p; q != NULL; q = q->next)
-       {
-               memcpy(q->payload, pkt+pos, q->len);
-               pos += q->len;
-       }
-
        LINK_STATS_INC(link.recv);
        
        ethhdr = p->payload;
-
+       
        switch (htons(ethhdr->type)) {
        case ETHTYPE_IP:
        case ETHTYPE_ARP:
@@ -83,7 +51,7 @@ void eth_poll()
                        pbuf_free(p);
                }
                break;
-
+               
        default:
                outputf("Unhandled packet type %04x input", ethhdr->type);
                pbuf_free(p);
@@ -91,22 +59,40 @@ void eth_poll()
        }
 }
 
-static err_t _transmit(struct netif *netif, struct pbuf *p)
+void eth_poll()
 {
-       struct nic *nic = netif->state;
-       struct pbuf *q;
-       unsigned char pkt[1600];
-       unsigned int len = 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++;
 
-       for(q = p; q != NULL; q = q->next)
+       while (i > 0)
        {
-               memcpy(pkt + len, q->payload, q->len);
-               len += q->len;
+               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: %d bytes", len);
+//     outputf("NIC: Transmit packet");
 
-       nic->transmit(len, pkt);
+       nic->transmit(nic, p);
 
        LINK_STATS_INC(link.xmit);
 
@@ -152,10 +138,19 @@ int eth_register(struct nic *nic)
        return 0;
 }
 
+typedef void(*thunk_t)();
+
+TABLE(thunk_t, protocols);
+
 void eth_init()
 {
+       int i;
+       
        /* Required for DMA to work. :( */
        smram_tseg_set_state(SMRAM_TSEG_OPEN);
+
        lwip_init();
-       pci_probe_driver(a3c90x_driver);
+
+       for (i = 0; i < TABLE_LENGTH(protocols); i++)
+               protocols_table[i]();
 }