X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Froute.c;h=cec35cae13b37b51fbeb5d7596bdafc00815aa73;hb=0b8b23e0dd7219344543f135ca0aeba8a4a42d48;hp=c73ac9f2e5374c9aaba874bdefd3381b7666d797;hpb=36623e15a1c8685e5d8730345c1a7f9c93710fef;p=tinc

diff --git a/src/route.c b/src/route.c
index c73ac9f2..cec35cae 100644
--- a/src/route.c
+++ b/src/route.c
@@ -1,7 +1,7 @@
 /*
     route.c -- routing
     Copyright (C) 2000-2005 Ivo Timmermans,
-                  2000-2010 Guus Sliepen <guus@tinc-vpn.org>
+                  2000-2012 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
@@ -20,7 +20,6 @@
 
 #include "system.h"
 
-#include "splay_tree.h"
 #include "connection.h"
 #include "control_common.h"
 #include "ethernet.h"
@@ -36,12 +35,12 @@
 
 rmode_t routing_mode = RMODE_ROUTER;
 fmode_t forwarding_mode = FMODE_INTERNAL;
-bool decrement_ttl = true;
+bmode_t broadcast_mode = BMODE_MST;
+bool decrement_ttl = false;
 bool directonly = false;
 bool priorityinheritance = false;
 int macexpire = 600;
 bool overwrite_mac = false;
-bool broadcast = true;
 mac_t mymac = {{0xFE, 0xFD, 0, 0, 0, 0}};
 bool pcap = false;
 
@@ -101,7 +100,7 @@ static bool ratelimit(int frequency) {
 
 static bool checklength(node_t *source, vpn_packet_t *packet, length_t length) {
 	if(packet->len < length) {
-		ifdebug(TRAFFIC) logger(LOG_WARNING, "Got too short packet from %s (%s)", source->name, source->hostname);
+		logger(DEBUG_TRAFFIC, LOG_WARNING, "Got too short packet from %s (%s)", source->name, source->hostname);
 		return false;
 	} else
 		return true;
@@ -164,7 +163,7 @@ static void clamp_mss(const node_t *source, const node_t *via, vpn_packet_t *pac
 		if(oldmss <= newmss)
 			break;
 		
-		ifdebug(TRAFFIC) logger(LOG_INFO, "Clamping MSS of packet from %s to %s to %d", source->name, via->name, newmss);
+		logger(DEBUG_TRAFFIC, LOG_INFO, "Clamping MSS of packet from %s to %s to %d", source->name, via->name, newmss);
 
 		/* Update the MSS value and the checksum */
 		packet->data[start + 22 + i] = newmss >> 8;
@@ -187,27 +186,20 @@ static void swap_mac_addresses(vpn_packet_t *packet) {
 }
 	
 static void age_subnets(int fd, short events, void *data) {
-	subnet_t *s;
-	connection_t *c;
-	splay_node_t *node, *next, *node2;
 	bool left = false;
 	time_t now = time(NULL);
 
-	for(node = myself->subnet_tree->head; node; node = next) {
-		next = node->next;
-		s = node->data;
+	for splay_each(subnet_t, s, myself->subnet_tree) {
 		if(s->expires && s->expires < now) {
-			ifdebug(TRAFFIC) {
+			if(debug_level >= DEBUG_TRAFFIC) {
 				char netstr[MAXNETSTR];
 				if(net2str(netstr, sizeof netstr, s))
-					logger(LOG_INFO, "Subnet %s expired", netstr);
+					logger(DEBUG_TRAFFIC, LOG_INFO, "Subnet %s expired", netstr);
 			}
 
-			for(node2 = connection_tree->head; node2; node2 = node2->next) {
-				c = node2->data;
+			for list_each(connection_t, c, connection_list)
 				if(c->status.active)
 					send_del_subnet(c, s);
-			}
 
 			subnet_del(myself, s);
 		} else {
@@ -221,16 +213,12 @@ static void age_subnets(int fd, short events, void *data) {
 }
 
 static void learn_mac(mac_t *address) {
-	subnet_t *subnet;
-	splay_node_t *node;
-	connection_t *c;
-
-	subnet = lookup_subnet_mac(myself, address);
+	subnet_t *subnet = lookup_subnet_mac(myself, address);
 
 	/* If we don't know this MAC address yet, store it */
 
 	if(!subnet) {
-		ifdebug(TRAFFIC) logger(LOG_INFO, "Learned new MAC address %hx:%hx:%hx:%hx:%hx:%hx",
+		logger(DEBUG_TRAFFIC, LOG_INFO, "Learned new MAC address %hx:%hx:%hx:%hx:%hx:%hx",
 				   address->x[0], address->x[1], address->x[2], address->x[3],
 				   address->x[4], address->x[5]);
 
@@ -244,11 +232,9 @@ static void learn_mac(mac_t *address) {
 
 		/* And tell all other tinc daemons it's our MAC */
 
-		for(node = connection_tree->head; node; node = node->next) {
-			c = node->data;
+		for list_each(connection_t, c, connection_list)
 			if(c->status.active)
 				send_add_subnet(c, subnet);
-		}
 
 		if(!timeout_initialized(&age_subnets_event))
 			timeout_set(&age_subnets_event, age_subnets, NULL);
@@ -350,11 +336,11 @@ static void fragment_ipv4_packet(node_t *dest, vpn_packet_t *packet) {
 	todo = ntohs(ip.ip_len) - ip_size;
 
 	if(ether_size + ip_size + todo != packet->len) {
-		ifdebug(TRAFFIC) logger(LOG_WARNING, "Length of packet (%d) doesn't match length in IPv4 header (%d)", packet->len, (int)(ether_size + ip_size + todo));
+		logger(DEBUG_TRAFFIC, LOG_WARNING, "Length of packet (%d) doesn't match length in IPv4 header (%d)", packet->len, (int)(ether_size + ip_size + todo));
 		return;
 	}
 
-	ifdebug(TRAFFIC) logger(LOG_INFO, "Fragmenting packet of %d bytes to %s (%s)", packet->len, dest->name, dest->hostname);
+	logger(DEBUG_TRAFFIC, LOG_INFO, "Fragmenting packet of %d bytes to %s (%s)", packet->len, dest->name, dest->hostname);
 
 	offset = packet->data + ether_size + ip_size;
 	maxlen = (dest->mtu - ether_size - ip_size) & ~0x7;
@@ -391,7 +377,7 @@ static void route_ipv4_unicast(node_t *source, vpn_packet_t *packet) {
 	subnet = lookup_subnet_ipv4(&dest);
 
 	if(!subnet) {
-		ifdebug(TRAFFIC) logger(LOG_WARNING, "Cannot route packet from %s (%s): unknown IPv4 destination address %d.%d.%d.%d",
+		logger(DEBUG_TRAFFIC, LOG_WARNING, "Cannot route packet from %s (%s): unknown IPv4 destination address %d.%d.%d.%d",
 				source->name, source->hostname,
 				dest.x[0],
 				dest.x[1],
@@ -403,7 +389,7 @@ static void route_ipv4_unicast(node_t *source, vpn_packet_t *packet) {
 	}
 	
 	if(subnet->owner == source) {
-		ifdebug(TRAFFIC) logger(LOG_WARNING, "Packet looping back to %s (%s)!", source->name, source->hostname);
+		logger(DEBUG_TRAFFIC, LOG_WARNING, "Packet looping back to %s (%s)!", source->name, source->hostname);
 		return;
 	}
 
@@ -419,7 +405,7 @@ static void route_ipv4_unicast(node_t *source, vpn_packet_t *packet) {
 	via = (subnet->owner->via == myself) ? subnet->owner->nexthop : subnet->owner->via;
 
 	if(via == source) {
-		ifdebug(TRAFFIC) logger(LOG_ERR, "Routing loop for packet from %s (%s)!", source->name, source->hostname);
+		logger(DEBUG_TRAFFIC, LOG_ERR, "Routing loop for packet from %s (%s)!", source->name, source->hostname);
 		return;
 	}
 	
@@ -427,7 +413,7 @@ static void route_ipv4_unicast(node_t *source, vpn_packet_t *packet) {
 		return route_ipv4_unreachable(source, packet, ICMP_DEST_UNREACH, ICMP_NET_ANO);
 
 	if(via && packet->len > MAX(via->mtu, 590) && via != myself) {
-		ifdebug(TRAFFIC) logger(LOG_INFO, "Packet for %s (%s) length %d larger than MTU %d", subnet->owner->name, subnet->owner->hostname, packet->len, via->mtu);
+		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);
 		if(packet->data[20] & 0x40) {
 			packet->len = MAX(via->mtu, 590);
 			route_ipv4_unreachable(source, packet, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED);
@@ -447,7 +433,7 @@ static void route_ipv4(node_t *source, vpn_packet_t *packet) {
 	if(!checklength(source, packet, ether_size + ip_size))
 		return;
 
-	if(broadcast && (((packet->data[30] & 0xf0) == 0xe0) || (
+	if(broadcast_mode && (((packet->data[30] & 0xf0) == 0xe0) || (
 			packet->data[30] == 255 &&
 			packet->data[31] == 255 &&
 			packet->data[32] == 255 &&
@@ -546,7 +532,7 @@ static void route_ipv6_unicast(node_t *source, vpn_packet_t *packet) {
 	subnet = lookup_subnet_ipv6(&dest);
 
 	if(!subnet) {
-		ifdebug(TRAFFIC) logger(LOG_WARNING, "Cannot route packet from %s (%s): unknown IPv6 destination address %hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx",
+		logger(DEBUG_TRAFFIC, LOG_WARNING, "Cannot route packet from %s (%s): unknown IPv6 destination address %hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx",
 				source->name, source->hostname,
 				ntohs(dest.x[0]),
 				ntohs(dest.x[1]),
@@ -562,7 +548,7 @@ static void route_ipv6_unicast(node_t *source, vpn_packet_t *packet) {
 	}
 
 	if(subnet->owner == source) {
-		ifdebug(TRAFFIC) logger(LOG_WARNING, "Packet looping back to %s (%s)!", source->name, source->hostname);
+		logger(DEBUG_TRAFFIC, LOG_WARNING, "Packet looping back to %s (%s)!", source->name, source->hostname);
 		return;
 	}
 
@@ -575,7 +561,7 @@ static void route_ipv6_unicast(node_t *source, vpn_packet_t *packet) {
 	via = (subnet->owner->via == myself) ? subnet->owner->nexthop : subnet->owner->via;
 	
 	if(via == source) {
-		ifdebug(TRAFFIC) logger(LOG_ERR, "Routing loop for packet from %s (%s)!", source->name, source->hostname);
+		logger(DEBUG_TRAFFIC, LOG_ERR, "Routing loop for packet from %s (%s)!", source->name, source->hostname);
 		return;
 	}
 	
@@ -583,7 +569,7 @@ static void route_ipv6_unicast(node_t *source, vpn_packet_t *packet) {
 		return route_ipv6_unreachable(source, packet, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN);
 
 	if(via && packet->len > MAX(via->mtu, 1294) && via != myself) {
-		ifdebug(TRAFFIC) logger(LOG_INFO, "Packet for %s (%s) length %d larger than MTU %d", subnet->owner->name, subnet->owner->hostname, packet->len, via->mtu);
+		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);
 		packet->len = MAX(via->mtu, 1294);
 		route_ipv6_unreachable(source, packet, ICMP6_PACKET_TOO_BIG, 0);
 		return;
@@ -617,7 +603,7 @@ static void route_neighborsol(node_t *source, vpn_packet_t *packet) {
 	has_opt = packet->len >= ether_size + ip6_size + ns_size + opt_size + ETH_ALEN;
 	
 	if(source != myself) {
-		ifdebug(TRAFFIC) logger(LOG_WARNING, "Got neighbor solicitation request from %s (%s) while in router mode!", source->name, source->hostname);
+		logger(DEBUG_TRAFFIC, LOG_WARNING, "Got neighbor solicitation request from %s (%s) while in router mode!", source->name, source->hostname);
 		return;
 	}
 
@@ -637,7 +623,7 @@ static void route_neighborsol(node_t *source, vpn_packet_t *packet) {
 
 	if(ns.nd_ns_hdr.icmp6_type != ND_NEIGHBOR_SOLICIT ||
 	   (has_opt && opt.nd_opt_type != ND_OPT_SOURCE_LINKADDR)) {
-		ifdebug(TRAFFIC) logger(LOG_WARNING, "Cannot route packet: received unknown type neighbor solicitation request");
+		logger(DEBUG_TRAFFIC, LOG_WARNING, "Cannot route packet: received unknown type neighbor solicitation request");
 		return;
 	}
 
@@ -661,7 +647,7 @@ static void route_neighborsol(node_t *source, vpn_packet_t *packet) {
 	}
 
 	if(checksum) {
-		ifdebug(TRAFFIC) logger(LOG_WARNING, "Cannot route packet: checksum error for neighbor solicitation request");
+		logger(DEBUG_TRAFFIC, LOG_WARNING, "Cannot route packet: checksum error for neighbor solicitation request");
 		return;
 	}
 
@@ -670,7 +656,7 @@ static void route_neighborsol(node_t *source, vpn_packet_t *packet) {
 	subnet = lookup_subnet_ipv6((ipv6_t *) &ns.nd_ns_target);
 
 	if(!subnet) {
-		ifdebug(TRAFFIC) logger(LOG_WARNING, "Cannot route packet: neighbor solicitation request for unknown address %hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx",
+		logger(DEBUG_TRAFFIC, LOG_WARNING, "Cannot route packet: neighbor solicitation request for unknown address %hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx",
 				   ntohs(((uint16_t *) &ns.nd_ns_target)[0]),
 				   ntohs(((uint16_t *) &ns.nd_ns_target)[1]),
 				   ntohs(((uint16_t *) &ns.nd_ns_target)[2]),
@@ -744,7 +730,7 @@ static void route_ipv6(node_t *source, vpn_packet_t *packet) {
 		return;
 	}
 
-	if(broadcast && packet->data[38] == 255)
+	if(broadcast_mode && packet->data[38] == 255)
 		broadcast_packet(source, packet);
 	else
 		route_ipv6_unicast(source, packet);
@@ -761,7 +747,7 @@ static void route_arp(node_t *source, vpn_packet_t *packet) {
 		return;
 
 	if(source != myself) {
-		ifdebug(TRAFFIC) logger(LOG_WARNING, "Got ARP request from %s (%s) while in router mode!", source->name, source->hostname);
+		logger(DEBUG_TRAFFIC, LOG_WARNING, "Got ARP request from %s (%s) while in router mode!", source->name, source->hostname);
 		return;
 	}
 
@@ -778,7 +764,7 @@ static void route_arp(node_t *source, vpn_packet_t *packet) {
 
 	if(ntohs(arp.arp_hrd) != ARPHRD_ETHER || ntohs(arp.arp_pro) != ETH_P_IP ||
 	   arp.arp_hln != ETH_ALEN || arp.arp_pln != sizeof addr || ntohs(arp.arp_op) != ARPOP_REQUEST) {
-		ifdebug(TRAFFIC) logger(LOG_WARNING, "Cannot route packet: received unknown type ARP request");
+		logger(DEBUG_TRAFFIC, LOG_WARNING, "Cannot route packet: received unknown type ARP request");
 		return;
 	}
 
@@ -787,7 +773,7 @@ static void route_arp(node_t *source, vpn_packet_t *packet) {
 	subnet = lookup_subnet_ipv4((ipv4_t *) &arp.arp_tpa);
 
 	if(!subnet) {
-		ifdebug(TRAFFIC) logger(LOG_WARNING, "Cannot route packet: ARP request for unknown address %d.%d.%d.%d",
+		logger(DEBUG_TRAFFIC, LOG_WARNING, "Cannot route packet: ARP request for unknown address %d.%d.%d.%d",
 				   arp.arp_tpa[0], arp.arp_tpa[1], arp.arp_tpa[2],
 				   arp.arp_tpa[3]);
 		return;
@@ -834,13 +820,12 @@ static void route_mac(node_t *source, vpn_packet_t *packet) {
 	subnet = lookup_subnet_mac(NULL, &dest);
 
 	if(!subnet) {
-		if(broadcast)
-			broadcast_packet(source, packet);
+		broadcast_packet(source, packet);
 		return;
 	}
 
 	if(subnet->owner == source) {
-		ifdebug(TRAFFIC) logger(LOG_WARNING, "Packet looping back to %s (%s)!", source->name, source->hostname);
+		logger(DEBUG_TRAFFIC, LOG_WARNING, "Packet looping back to %s (%s)!", source->name, source->hostname);
 		return;
 	}
 
@@ -855,7 +840,7 @@ static void route_mac(node_t *source, vpn_packet_t *packet) {
 		return;
 	
 	if(via && packet->len > via->mtu && via != myself) {
-		ifdebug(TRAFFIC) logger(LOG_INFO, "Packet for %s (%s) length %d larger than MTU %d", subnet->owner->name, subnet->owner->hostname, packet->len, via->mtu);
+		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];
 		if(type == ETH_P_IP && packet->len > 590) {
 			if(packet->data[20] & 0x40) {
@@ -879,14 +864,18 @@ static void route_mac(node_t *source, vpn_packet_t *packet) {
 
 static void send_pcap(vpn_packet_t *packet) {
 	pcap = false;
-	for(splay_node_t *node = connection_tree->head; node; node = node->next) {
-		connection_t *c = node->data;
+
+	for list_each(connection_t, c, connection_list) {
 		if(!c->status.pcap)
 			continue;
-		else
-			pcap = true;
-		if(send_request(c, "%d %d %d", CONTROL, REQ_PCAP, packet->len))
-			send_meta(c, (char *)packet->data, packet->len);
+
+		pcap = true;
+		int len = packet->len;
+		if(c->outmaclength && c->outmaclength < len)
+			len = c->outmaclength;
+
+		if(send_request(c, "%d %d %d", CONTROL, REQ_PCAP, len))
+			send_meta(c, (char *)packet->data, len);
 	}
 }
 
@@ -971,7 +960,7 @@ void route(node_t *source, vpn_packet_t *packet) {
 						break;
 
 					default:
-						ifdebug(TRAFFIC) logger(LOG_WARNING, "Cannot route packet from %s (%s): unknown type %hx", source->name, source->hostname, type);
+						logger(DEBUG_TRAFFIC, LOG_WARNING, "Cannot route packet from %s (%s): unknown type %hx", source->name, source->hostname, type);
 						break;
 				}
 			}