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 1.1.2.4 2001/01/05 23:53:53 guus Exp $
*/
#include "config.h"
#include <utils.h>
#include <xalloc.h>
+#include <syslog.h>
#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; /* Will be used to determine if we route by MAC or by payload's protocol */
-connection_t *route_packet(vpn_packet_t *packet)
+connection_t *route_mac(connection_t *source, vpn_packet_t *packet)
{
- unsigned short type;
+ connection_t *oldsrc, *dst;
+ subnet_t *subnet;
cp
- type = ntohs(*((unsigned short*)(&packet.data[12])))
+ /* Learn source address */
- if(routing_mode)
+ oldsrc = lookup_subnet_mac((mac_t *)(&packet->data[0]))->owner;
+
+ if(!oldsrc)
{
- return route_mac(packet);
+ subnet = new_subnet();
+ subnet->type = SUBNET_MAC;
+ memcpy(&subnet->net.mac.address, (mac_t *)(&packet->data[0]), sizeof(mac_t));
+ subnet_add(source, subnet);
}
- 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;
- }
-}
+ /* FIXME: do ageing and roaming */
+
+ /* Lookup destination address */
+
+ dst = lookup_subnet_mac((mac_t *)(&packet->data[6]))->owner;
-connection_t *route_mac(vpn_packet_t *packet)
-{
- connection_t *cl;
-cp
- cl = lookup_subnet_mac((mac_t *)(&packet.data[6]));
- if(!cl)
+ 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]);
+ packet->data[6],
+ packet->data[7],
+ packet->data[8],
+ packet->data[9],
+ packet->data[10],
+ packet->data[11]);
}
cp
- return cl;
+ return dst;
}
-
connection_t *route_ipv4(vpn_packet_t *packet)
{
ipv4_t dest;
connection_t *cl;
cp
- dest = ntohl(*((unsigned long*)(&packet.data[30]);
+ dest = ntohl(*((unsigned long*)(&packet->data[30])));
- cl = lookup_subnet_ipv4(dest);
+ 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]);
+ 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"));
+ if(debug_lvl > DEBUG_NOTHING)
+ {
+ syslog(LOG_WARNING, _("Cannot route packet: IPv6 routing not implemented yet"));
+ }
cp
return NULL;
}
+
+connection_t *route_packet(connection_t *source, vpn_packet_t *packet)
+{
+ unsigned short int type;
+cp
+ /* FIXME: multicast? */
+
+ switch(routing_mode)
+ {
+ case RMODE_HUB:
+ return broadcast;
+
+ case RMODE_SWITCH:
+ return route_mac(source, packet);
+
+ case RMODE_ROUTER:
+ 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:
+ if(debug_lvl >= DEBUG_TRAFFIC)
+ {
+ syslog(LOG_WARNING, _("Cannot route packet: unknown type %hx"), type);
+ }
+ return NULL;
+ }
+ }
+}