/* route.c -- routing Copyright (C) 2000 Ivo Timmermans , 2000 Guus Sliepen This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. $Id: route.c,v 1.1.2.3 2000/11/20 19:12:17 guus Exp $ */ #include "config.h" #include #include #include "net.h" #include "connection.h" #include "system.h" int routing_mode = 0; /* Will be used to determine if we route by MAC or by payload's protocol */ connection_t *route_packet(vpn_packet_t *packet) { unsigned short type; cp type = ntohs(*((unsigned short*)(&packet.data[12]))) if(routing_mode) { return route_mac(packet); } switch(type) { case 0x0800: return route_ipv4(packet); case 0x86DD: return route_ipv6(packet); /* case 0x8137: return route_ipx(packet); case 0x0806: return route_arp(packet); */ default: if(debug_lvl >= DEBUG_TRAFFIC) { syslog(LOG_WARNING, _("Cannot route packet: unknown type %hx"), type); } return NULL; } } connection_t *route_mac(vpn_packet_t *packet) { connection_t *cl; cp cl = lookup_subnet_mac((mac_t *)(&packet.data[6])); if(!cl) if(debug_lvl >= DEBUG_TRAFFIC) { syslog(LOG_WARNING, _("Cannot route packet: unknown destination address %x:%x:%x:%x:%x:%x"), packet.data[6], packet.data[7], packet.data[8], packet.data[9], packet.data[10], packet.data[11]); } cp return cl; } connection_t *route_ipv4(vpn_packet_t *packet) { ipv4_t dest; connection_t *cl; cp dest = ntohl(*((unsigned long*)(&packet.data[30]); cl = lookup_subnet_ipv4(dest); if(!cl) if(debug_lvl >= DEBUG_TRAFFIC) { syslog(LOG_WARNING, _("Cannot route packet: unknown destination address %d.%d.%d.%d"), packet.data[30], packet.data[31], packet.data[32], packet.data[33]); } cp return cl; } connection_t *route_ipv6(vpn_packet_t *packet) { cp syslog(LOG_WARNING, _("Cannot route packet: IPv6 routing not implemented yet")); cp return NULL; }