X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/4b3b34b994a60ba3f89502e85d8cbe80c9da26f3..eba4c99dd2bd0fca7702edb2cb1508fbadfa85f5:/l2tpns.c

diff --git a/l2tpns.c b/l2tpns.c
index 994116f..816d27f 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 1.145 2005-10-18 07:19:28 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);
@@ -1682,6 +1690,7 @@ void sendipcp(sessionidt s, tunnelidt t)
 				 my_address; // send my IP
 
 	tunnelsend(buf, 10 + (q - buf), t); // send it
+	restart_timer(s, ipcp);
 }
 
 void sendipv6cp(sessionidt s, tunnelidt t)
@@ -1707,6 +1716,7 @@ void sendipv6cp(sessionidt s, tunnelidt t)
 	q[13] = 1;
 
 	tunnelsend(buf, 14 + (q - buf), t);	// send it
+	restart_timer(s, ipv6cp);
 }
 
 static void sessionclear(sessionidt s)
@@ -2327,9 +2337,9 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
 							if (*p == 5 && p[1] == 6) // Magic-Number
 								amagic = ntohl(*(uint32_t *) (p + 2));
 							else if (*p == 7) // Protocol-Field-Compression
-								aflags |= SESSIONPFC;
+								aflags |= SESSION_PFC;
 							else if (*p == 8) // Address-and-Control-Field-Compression
-								aflags |= SESSIONACFC;
+								aflags |= SESSION_ACFC;
 							p += p[1];
 						}
 					}
@@ -2456,20 +2466,17 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
 				case 12:      // ICCN
 					if (amagic == 0) amagic = time_now;
 					session[s].magic = amagic; // set magic number
-					session[s].l2tp_flags = aflags; // set flags received
+					session[s].flags = aflags; // set flags received
 					session[s].mru = PPPMTU; // default
 					controlnull(t); // ack
 
 					// start LCP
-					sess_local[s].lcp.restart = time_now + config->ppp_restart_time;
-					sess_local[s].lcp.conf_sent = 1;
-					sess_local[s].lcp.nak_sent = 0;
 					sess_local[s].lcp_authtype = config->radius_authprefer;
 					sess_local[s].ppp_mru = MRU;
-					session[s].ppp.lcp = RequestSent;
 					sendlcp(s, t);
-
+					change_state(s, lcp, RequestSent);
 					break;
+
 				case 14:      // CDN
 					controlnull(t); // ack
 					sessionshutdown(s, "Closed (Received CDN).", 0, 0);
@@ -2817,8 +2824,6 @@ static void regular_cleanups(double period)
 				if (sess_local[s].lcp.conf_sent < config->ppp_max_configure)
 				{
 					LOG(3, s, session[s].tunnel, "No ACK for LCP ConfigReq... resending\n");
-					sess_local[s].lcp.restart = time_now + config->ppp_restart_time;
-					sess_local[s].lcp.conf_sent++;
 					sendlcp(s, session[s].tunnel);
 					change_state(s, lcp, next_state);
 				}
@@ -2848,8 +2853,6 @@ static void regular_cleanups(double period)
 				if (sess_local[s].ipcp.conf_sent < config->ppp_max_configure)
 				{
 					LOG(3, s, session[s].tunnel, "No ACK for IPCP ConfigReq... resending\n");
-					sess_local[s].ipcp.restart = time_now + config->ppp_restart_time;
-					sess_local[s].ipcp.conf_sent++;
 					sendipcp(s, session[s].tunnel);
 					change_state(s, ipcp, next_state);
 				}
@@ -2879,8 +2882,6 @@ static void regular_cleanups(double period)
 				if (sess_local[s].ipv6cp.conf_sent < config->ppp_max_configure)
 				{
 					LOG(3, s, session[s].tunnel, "No ACK for IPV6CP ConfigReq... resending\n");
-					sess_local[s].ipv6cp.restart = time_now + config->ppp_restart_time;
-					sess_local[s].ipv6cp.conf_sent++;
 					sendipv6cp(s, session[s].tunnel);
 					change_state(s, ipv6cp, next_state);
 				}
@@ -2907,8 +2908,6 @@ static void regular_cleanups(double period)
 				if (sess_local[s].ccp.conf_sent < config->ppp_max_configure)
 				{
 					LOG(3, s, session[s].tunnel, "No ACK for CCP ConfigReq... resending\n");
-					sess_local[s].ccp.restart = time_now + config->ppp_restart_time;
-					sess_local[s].ccp.conf_sent++;
 					sendccp(s, session[s].tunnel);
 					change_state(s, ccp, next_state);
 				}
@@ -5359,7 +5358,9 @@ int ip_filter(uint8_t *buf, int len, uint8_t filter)
 
 		if (frag_offset)
 		{
-			if (!rule->frag || 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