X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Froute.c;h=1b6336dcd168488886aaff62b1c17140126be4b4;hp=4620665461d130a2a8fecc5f51f2a3cab8d362fb;hb=65247c063b36a76dd68156fe17b017c7460d982f;hpb=408ca91766088b6c2d38e198b0692bf394b41248 diff --git a/src/route.c b/src/route.c index 46206654..1b6336dc 100644 --- a/src/route.c +++ b/src/route.c @@ -1,7 +1,7 @@ /* route.c -- routing - Copyright (C) 2000 Ivo Timmermans , - 2000 Guus Sliepen + Copyright (C) 2000,2001 Ivo Timmermans , + 2000,2001 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 @@ -17,96 +17,181 @@ 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 $ + $Id: route.c,v 1.1.2.9 2001/05/28 08:21:43 guus Exp $ */ #include "config.h" +#ifdef HAVE_FREEBSD + #include +#else + #include +#endif #include #include +#include #include "net.h" #include "connection.h" +#include "subnet.h" +#include "route.h" #include "system.h" -int routing_mode = 0; /* Will be used to determine if we route by MAC or by payload's protocol */ +int routing_mode = RMODE_ROUTER; +subnet_t mymac; -connection_t *route_packet(vpn_packet_t *packet) +void learn_mac(connection_t *source, mac_t *address) { - unsigned short type; + subnet_t *subnet; cp - type = ntohs(*((unsigned short*)(&packet.data[12]))) - - if(routing_mode) + subnet = lookup_subnet_mac(address); + + if(!subnet) { - return route_mac(packet); + subnet = new_subnet(); + subnet->type = SUBNET_MAC; +// subnet->lasttime = gettimeofday(); + memcpy(&subnet->net.mac.address, address, sizeof(mac_t)); + subnet_add(source, subnet); + + if(debug_lvl >= DEBUG_TRAFFIC) + { + syslog(LOG_DEBUG, _("Learned new MAC address %x:%x:%x:%x:%x:%x from %s (%s)"), + address->x[0], + address->x[1], + address->x[2], + address->x[3], + address->x[4], + address->x[5], + source->name, source->hostname); + } } - - 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 *route_mac(connection_t *source, vpn_packet_t *packet) { - connection_t *cl; + subnet_t *subnet; 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]); - } + /* Learn source address */ + + learn_mac(source, (mac_t *)(&packet->data[0])); + + /* Lookup destination address */ + + subnet = lookup_subnet_mac((mac_t *)(&packet->data[6])); + + if(!subnet) + { + 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]); + } + return NULL; + } cp - return cl; + return subnet->owner; } - connection_t *route_ipv4(vpn_packet_t *packet) { ipv4_t dest; - connection_t *cl; + subnet_t *subnet; cp - dest = ntohl(*((unsigned long*)(&packet.data[30]); + 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]); - } + subnet = lookup_subnet_ipv4(&dest); + + if(!subnet) + { + 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 NULL; + } cp - return cl; + return subnet->owner; } connection_t *route_ipv6(vpn_packet_t *packet) { cp - syslog(LOG_WARNING, _("Cannot route packet: IPv6 routing not implemented yet")); + if(debug_lvl > DEBUG_NOTHING) + { + syslog(LOG_WARNING, _("Cannot route packet: IPv6 routing not yet implemented")); + } cp return NULL; } + +void route_outgoing(vpn_packet_t *packet) +{ + unsigned short int type; + avl_node_t *node; + connection_t *cl; +cp + /* FIXME: multicast? */ + + switch(routing_mode) + { + case RMODE_ROUTER: + type = ntohs(*((unsigned short*)(&packet->data[12]))); + switch(type) + { + case 0x0800: + cl = route_ipv4(packet); + break; + case 0x86DD: + cl = route_ipv6(packet); + break; + default: + if(debug_lvl >= DEBUG_TRAFFIC) + { + syslog(LOG_WARNING, _("Cannot route packet: unknown type %hx"), type); + } + return; + } + if(cl) + send_packet(cl, packet); + break; + + case RMODE_SWITCH: + cl = route_mac(myself, packet); + if(cl) + send_packet(cl, packet); + break; + + case RMODE_HUB: + for(node = connection_tree->head; node; node = node->next) + { + cl = (connection_t *)node->data; + if(cl->status.active) + send_packet(cl, packet); + } + break; + } +} + +void route_incoming(connection_t *source, vpn_packet_t *packet) +{ + switch(routing_mode) + { + case RMODE_ROUTER: + memcpy(packet->data, mymac.net.mac.address.x, 6); + break; + case RMODE_SWITCH: + learn_mac(source, (mac_t *)(&packet->data[0])); + break; + } + + accept_packet(packet); +}