stage2/network.c

   1 /*  network.c - Toplevel networking functions
   2
   3 Copyright (C) 2010-2011  Hector Martin "marcan" <hector@marcansoft.com>
   4
   5 This code is licensed to you under the terms of the GNU GPL, version 2;
   6 see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
   7 */
   8
   9 #include "types.h"
  10 #include "debug.h"
  11 #include "string.h"
  12 #include "time.h"
  13
  14 #include "lwip/init.h"
  15 #include "lwip/dhcp.h"
  16 #include "lwip/tcp.h"
  17
  18 #include "gelic_netif.h"
  19 #include "netif/etharp.h"
  20
  21 struct netif eth;
  22 static struct ip_addr ipaddr, netmask, gw;
  23
  24 #if LWIP_TCP
  25 static u64 last_tcp_time;
  26 #endif
  27 static u64 last_arp_time;
  28 static u64 last_dhcp_coarse_time;
  29 static u64 last_dhcp_fine_time;
  30
  31 void net_init(void) {
  32         memset(&ipaddr, 0, sizeof(ipaddr));
  33         memset(&netmask, 0, sizeof(ipaddr));
  34         memset(&gw, 0, sizeof(ipaddr));
  35
  36         printf("Initializing network...\n");
  37         lwip_init();
  38         printf("lwIP Initialized\n");
  39         netif_add(&eth, &ipaddr, &netmask, &gw, NULL, gelicif_init, ethernet_input);
  40         netif_set_default(&eth);
  41         netif_set_up(&eth);
  42         printf("Ethernet interface initialized\n");
  43         printf("Starting DHCP\n");
  44         dhcp_start(&eth);
  45
  46         u64 now = gettb();
  47 #if LWIP_TCP
  48         last_tcp_time = now;
  49 #endif
  50         last_arp_time = last_dhcp_coarse_time = last_dhcp_fine_time = now;
  51 }
  52
  53 void net_poll(void) {
  54
  55         u64 now = gettb();
  56
  57         gelicif_input(&eth);
  58         if ((now - last_arp_time) >= (ARP_TMR_INTERVAL*TICKS_PER_MS)) {
  59                 etharp_tmr();
  60                 last_arp_time = now;
  61         }
  62 #if LWIP_TCP
  63         if ((now - last_tcp_time) >= (TCP_TMR_INTERVAL*TICKS_PER_MS)) {
  64                 tcp_tmr();
  65                 last_tcp_time = now;
  66         }
  67 #endif
  68         if ((now - last_dhcp_coarse_time) >= (DHCP_COARSE_TIMER_SECS*TICKS_PER_SEC)) {
  69                 dhcp_coarse_tmr();
  70                 last_dhcp_coarse_time = now;
  71         }
  72         if ((now - last_dhcp_fine_time) >= (DHCP_FINE_TIMER_MSECS*TICKS_PER_MS)) {
  73                 dhcp_fine_tmr();
  74                 last_dhcp_fine_time = now;
  75         }
  76 }
  77
  78 void net_shutdown(void) {
  79         printf("Releasing DHCP lease...\n");
  80         dhcp_release(&eth);
  81         dhcp_stop(&eth);
  82         printf("Shutting down network...\n");
  83         netif_remove(&eth);
  84         gelicif_shutdown(&eth);
  85 }