X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/0dc8fc58d5e86e164c3f85e63cad8d270d12cee2..560fad4be9a737cce1990547b0ebf5195646dd3d:/l2tpns.c

diff --git a/l2tpns.c b/l2tpns.c
index 8af4eb2..39f72d7 100644
--- a/l2tpns.c
+++ b/l2tpns.c
@@ -4,7 +4,7 @@
 // Copyright (c) 2002 FireBrick (Andrews & Arnold Ltd / Watchfront Ltd) - GPL licenced
 // vim: sw=8 ts=8
 
-char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.147 2005/11/14 08:38:02 bodea Exp $";
+char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.150 2005/11/17 07:35:35 bodea Exp $";
 
 #include <arpa/inet.h>
 #include <assert.h>
@@ -554,6 +554,13 @@ static void inittun(void)
 		LOG(0, 0, 0, "Error setting tun queue length: %s\n", strerror(errno));
 		exit(1);
 	}
+	/* set MTU to modem MRU + 4 (tun header) */
+	ifr.ifr_mtu = MRU + 4;
+	if (ioctl(ifrfd, SIOCSIFMTU, (void *) &ifr) < 0)
+	{
+		LOG(0, 0, 0, "Error setting tun MTU: %s\n", strerror(errno));
+		exit(1);
+	}
 	ifr.ifr_flags = IFF_UP;
 	if (ioctl(ifrfd, SIOCSIFFLAGS, (void *) &ifr) < 0)
 	{
@@ -1043,7 +1050,7 @@ void adjust_tcp_mss(sessionidt s, tunnelidt t, uint8_t *buf, int len, uint8_t *t
 	sum = orig + (~MSS & 0xffff);
 	sum += ntohs(*(uint16_t *) (tcp + 16));
 	sum = (sum & 0xffff) + (sum >> 16);
-	*(uint16_t *) (tcp + 16) = htons(sum);
+	*(uint16_t *) (tcp + 16) = htons(sum + (sum >> 16));
 }
 
 // process outgoing (to tunnel) IP
@@ -1170,7 +1177,8 @@ static void processipout(uint8_t *buf, int len)
 			master_throttle_packet(sp->tbf_out, data, size);
 		return;
 	}
-	else if (sp->walled_garden && !config->cluster_iam_master)
+
+	if (sp->walled_garden && !config->cluster_iam_master)
 	{
 		// We are walled-gardening this
 		master_garden_packet(s, data, size);
@@ -5350,10 +5358,9 @@ int ip_filter(uint8_t *buf, int len, uint8_t filter)
 
 		if (frag_offset)
 		{
-			// non-fragmented deny rules are skipped if containing L4 matches
-			if (!rule->frag &&
-			    (rule->src_ports.op || rule->dst_ports.op || rule->tcp_flag_op) &&
-			    rule->action == FILTER_ACTION_DENY)
+			// layer 4 deny rules are skipped
+			if (rule->action == FILTER_ACTION_DENY &&
+			    (rule->src_ports.op || rule->dst_ports.op || rule->tcp_flag_op))
 				continue;
 		}
 		else