X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Froute.c;h=43d26972a6465af91f8d868c4dd0805b5c0aece7;hb=46a5aa0d674914f4220d8583b1b2f87c7f05a804;hp=7bb9996179e6de082fbb736deb2864ff4eb91b65;hpb=6bc5d626a8726fc23365ee705761a3c666a08ad4;p=tinc

diff --git a/src/route.c b/src/route.c
index 7bb99961..43d26972 100644
--- a/src/route.c
+++ b/src/route.c
@@ -1,7 +1,7 @@
 /*
     route.c -- routing
     Copyright (C) 2000-2005 Ivo Timmermans,
-                  2000-2012 Guus Sliepen <guus@tinc-vpn.org>
+                  2000-2013 Guus Sliepen <guus@tinc-vpn.org>
 
     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
@@ -229,7 +229,7 @@ static void learn_mac(mac_t *address) {
 
 		subnet = new_subnet();
 		subnet->type = SUBNET_MAC;
-		subnet->expires = time(NULL) + macexpire;
+		subnet->expires = now.tv_sec + macexpire;
 		subnet->net.mac.address = *address;
 		subnet->weight = 10;
 		subnet_add(myself, subnet);
@@ -244,7 +244,7 @@ static void learn_mac(mac_t *address) {
 		timeout_add(&age_subnets_timeout, age_subnets, NULL, &(struct timeval){10, rand() % 100000});
 	} else {
 		if(subnet->expires)
-			subnet->expires = time(NULL) + macexpire;
+			subnet->expires = now.tv_sec + macexpire;
 	}
 }
 
@@ -371,7 +371,10 @@ static void fragment_ipv4_packet(node_t *dest, vpn_packet_t *packet, length_t et
 	}
 }
 
-static void route_ipv4_unicast(node_t *source, vpn_packet_t *packet) {
+static void route_ipv4(node_t *source, vpn_packet_t *packet) {
+	if(!checklength(source, packet, ether_size + ip_size))
+		return;
+
 	subnet_t *subnet;
 	node_t *via;
 	ipv4_t dest;
@@ -391,6 +394,11 @@ static void route_ipv4_unicast(node_t *source, vpn_packet_t *packet) {
 		return;
 	}
 
+	if (!subnet->owner) {
+		broadcast_packet(source, packet);
+		return;
+	}
+
 	if(subnet->owner == source) {
 		logger(DEBUG_TRAFFIC, LOG_WARNING, "Packet looping back to %s (%s)!", source->name, source->hostname);
 		return;
@@ -432,20 +440,6 @@ static void route_ipv4_unicast(node_t *source, vpn_packet_t *packet) {
 	send_packet(subnet->owner, packet);
 }
 
-static void route_ipv4(node_t *source, vpn_packet_t *packet) {
-	if(!checklength(source, packet, ether_size + ip_size))
-		return;
-
-	if(broadcast_mode && (((packet->data[30] & 0xf0) == 0xe0) || (
-			packet->data[30] == 255 &&
-			packet->data[31] == 255 &&
-			packet->data[32] == 255 &&
-			packet->data[33] == 255)))
-		broadcast_packet(source, packet);
-	else
-		route_ipv4_unicast(source, packet);
-}
-
 /* RFC 2463 */
 
 static void route_ipv6_unreachable(node_t *source, vpn_packet_t *packet, length_t ether_size, uint8_t type, uint8_t code) {
@@ -526,7 +520,17 @@ static void route_ipv6_unreachable(node_t *source, vpn_packet_t *packet, length_
 	send_packet(source, packet);
 }
 
-static void route_ipv6_unicast(node_t *source, vpn_packet_t *packet) {
+static void route_neighborsol(node_t *source, vpn_packet_t *packet);
+
+static void route_ipv6(node_t *source, vpn_packet_t *packet) {
+	if(!checklength(source, packet, ether_size + ip6_size))
+		return;
+
+	if(packet->data[20] == IPPROTO_ICMPV6 && checklength(source, packet, ether_size + ip6_size + icmp6_size) && packet->data[54] == ND_NEIGHBOR_SOLICIT) {
+		route_neighborsol(source, packet);
+		return;
+	}
+
 	subnet_t *subnet;
 	node_t *via;
 	ipv6_t dest;
@@ -550,6 +554,11 @@ static void route_ipv6_unicast(node_t *source, vpn_packet_t *packet) {
 		return;
 	}
 
+	if (!subnet->owner) {
+		broadcast_packet(source, packet);
+		return;
+	}
+
 	if(subnet->owner == source) {
 		logger(DEBUG_TRAFFIC, LOG_WARNING, "Packet looping back to %s (%s)!", source->name, source->hostname);
 		return;
@@ -724,21 +733,6 @@ static void route_neighborsol(node_t *source, vpn_packet_t *packet) {
 	send_packet(source, packet);
 }
 
-static void route_ipv6(node_t *source, vpn_packet_t *packet) {
-	if(!checklength(source, packet, ether_size + ip6_size))
-		return;
-
-	if(packet->data[20] == IPPROTO_ICMPV6 && checklength(source, packet, ether_size + ip6_size + icmp6_size) && packet->data[54] == ND_NEIGHBOR_SOLICIT) {
-		route_neighborsol(source, packet);
-		return;
-	}
-
-	if(broadcast_mode && packet->data[38] == 255)
-		broadcast_packet(source, packet);
-	else
-		route_ipv6_unicast(source, packet);
-}
-
 /* RFC 826 */
 
 static void route_arp(node_t *source, vpn_packet_t *packet) {
@@ -822,7 +816,7 @@ static void route_mac(node_t *source, vpn_packet_t *packet) {
 	memcpy(&dest, &packet->data[0], sizeof dest);
 	subnet = lookup_subnet_mac(NULL, &dest);
 
-	if(!subnet) {
+	if(!subnet || !subnet->owner) {
 		broadcast_packet(source, packet);
 		return;
 	}
@@ -835,6 +829,11 @@ static void route_mac(node_t *source, vpn_packet_t *packet) {
 	if(forwarding_mode == FMODE_OFF && source != myself && subnet->owner != myself)
 		return;
 
+	uint16_t type = packet->data[12] << 8 | packet->data[13];
+
+	if(priorityinheritance && type == ETH_P_IP && packet->len >= ether_size + ip_size)
+		packet->priority = packet->data[15];
+
 	// Handle packets larger than PMTU
 
 	node_t *via = (subnet->owner->via == myself) ? subnet->owner->nexthop : subnet->owner->via;
@@ -844,7 +843,6 @@ static void route_mac(node_t *source, vpn_packet_t *packet) {
 
 	if(via && packet->len > via->mtu && via != myself) {
 		logger(DEBUG_TRAFFIC, LOG_INFO, "Packet for %s (%s) length %d larger than MTU %d", subnet->owner->name, subnet->owner->hostname, packet->len, via->mtu);
-		uint16_t type = packet->data[12] << 8 | packet->data[13];
 		length_t ethlen = 14;
 
 		if(type == ETH_P_8021Q) {