-
-#include "system.h"
-
-int routing_mode = RMODE_ROUTER;
-
-void learn_mac(connection_t *source, mac_t *address)
-{
- connection_t *old;
- subnet_t *subnet;
-cp
- old = lookup_subnet_mac(address)->owner;
-
- if(!old)
- {
- 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->address.x[0],
- address->address.x[1],
- address->address.x[2],
- address->address.x[3],
- address->address.x[4],
- address->address.x[5],
- cl->name, cl->hostname);
- }
- }
-}
-
-connection_t *route_mac(connection_t *source, vpn_packet_t *packet)
-{
- connection_t *oldsrc, *dst;
- subnet_t *subnet;
-cp
- /* Learn source address */
-
- learn_mac(source, (mac_t *)(&packet->data[0]));
-
- /* Lookup destination address */
-
- dst = lookup_subnet_mac((mac_t *)(&packet->data[6]))->owner;
-
- if(!dst)
- 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 dst;
-}
-
-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)->owner;
- 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
- 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_tree_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;
- }
- send_packet(cl, packet);
- break;
-
- case RMODE_SWITCH:
- cl = route_mac(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;
- }