From: Guus Sliepen Date: Mon, 23 Oct 2000 13:52:54 +0000 (+0000) Subject: - route.c will contain the routing logic. X-Git-Tag: release-1.0pre3~69 X-Git-Url: https://git.tinc-vpn.org/git/browse?a=commitdiff_plain;h=c46e84837d1c84a8590e0e3507227670368884a7;p=tinc - route.c will contain the routing logic. --- diff --git a/src/route.c b/src/route.c new file mode 100644 index 00000000..a958e1a7 --- /dev/null +++ b/src/route.c @@ -0,0 +1,88 @@ +/* + 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 1.1.2.1 2000/10/23 13:52:54 guus Exp $ +*/ + +#include "config.h" + +#include +#include + +#include "net.h" +#include "connlist.h" + +#include "system.h" + +int routing_mode = 0; /* Will be used to determine if we route by MAC or by payload's protocol */ + +conn_list_t *route_packet(vpn_packet_t *packet) +{ + unsigned short type; +cp + type = ntohs(*((unsigned short*)(&packet.data[12]))) + + 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: + /* TODO: try MAC as last resort? */ + if(debug_lvl >= DEBUG_TRAFFIC) + { + syslog(LOG_WARNING, _("Cannot route packet: unknown type %hx"), type); + } + return NULL; + } +} + +conn_list_t *route_ipv4(vpn_packet_t *packet) +{ + ipv4_t dest; + conn_list_t *cl; +cp + dest = ntohl(*((unsigned long*)(&packet.data[30]); + + cl = lookup_conn_list_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]); + } + + return cl; +cp +} + +conn_list_t *route_ipv6(vpn_packet_t *packet) +{ +cp + syslog(LOG_WARNING, _("Cannot route packet: IPv6 routing not implemented yet")); + return NULL; +cp +}