X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/57d13b822213468bc61f3916eda4e448196c14db..00ac71ac0835ec1dd2413508d5be8069ac208f7f:/ppp.c

diff --git a/ppp.c b/ppp.c
index b2d84ec..a169512 100644
--- a/ppp.c
+++ b/ppp.c
@@ -1,6 +1,6 @@
 // L2TPNS PPP Stuff
 
-char const *cvs_id_ppp = "$Id: ppp.c,v 1.22 2004-11-05 23:18:54 bodea Exp $";
+char const *cvs_id_ppp = "$Id: ppp.c,v 1.27 2004-11-18 13:15:28 bodea Exp $";
 
 #include <stdio.h>
 #include <string.h>
@@ -23,7 +23,7 @@ extern u32 eth_tx;
 extern time_t time_now;
 extern struct configt *config;
 
-void sendccp(tunnelidt t, sessionidt s);
+static void sendccp(tunnelidt t, sessionidt s);
 
 // Process PAP messages
 void processpap(tunnelidt t, sessionidt s, u8 *p, u16 l)
@@ -224,7 +224,7 @@ void processchap(tunnelidt t, sessionidt s, u8 *p, u16 l)
 	radiussend(r, RADIUSAUTH);
 }
 
-char *ppp_lcp_types[] = {
+static char *ppp_lcp_types[] = {
 	NULL,
 	"ConfigReq",
 	"ConfigAck",
@@ -240,7 +240,7 @@ char *ppp_lcp_types[] = {
 	"IdentRequest",
 };
 
-void dumplcp(u8 *p, int l)
+static void dumplcp(u8 *p, int l)
 {
 	int x = l - 4;
 	u8 *o = (p + 4);
@@ -543,6 +543,26 @@ void processlcp(tunnelidt t, sessionidt s, u8 *p, u16 l)
 	}
 }
 
+// find a PPP option, returns point to option, or 0 if not found
+static u8 *findppp(u8 *b, u8 mtype)
+{
+	u16 l = ntohs(*(u16 *) (b + 2));
+	if (l < 4)
+		return 0;
+	b += 4;
+	l -= 4;
+	while (l)
+	{
+		if (l < b[1] || !b[1])
+			return 0;		// faulty
+		if (*b == mtype)
+			return b;
+		l -= b[1];
+		b += b[1];
+	}
+	return 0;
+}
+
 // Process IPCP messages
 void processipcp(tunnelidt t, sessionidt s, u8 *p, u16 l)
 {
@@ -580,6 +600,10 @@ void processipcp(tunnelidt t, sessionidt s, u8 *p, u16 l)
 		session[s].flags |= SF_IPCP_ACKED;
 
 		LOG(3, session[s].ip, s, t, "IPCP Acked, session is now active\n");
+
+		// clear  LCP_ACKED flag  for possible fast renegotiaion for routers
+		session[s].flags &= ~SF_LCP_ACKED;
+
 		return;
 	}
 	if (*p != ConfigReq)
@@ -709,12 +733,6 @@ void processipin(tunnelidt t, sessionidt s, u8 *p, u16 l)
 		return;
 	}
 
-	if (session[s].snoop_ip && session[s].snoop_port)
-	{
-		// Snooping this session
-		snoop_send_packet(p, l, session[s].snoop_ip, session[s].snoop_port);
-	}
-
 	// Add on the tun header
 	p -= 4;
 	*(u32 *)p = htonl(0x00000800);
@@ -725,16 +743,6 @@ void processipin(tunnelidt t, sessionidt s, u8 *p, u16 l)
 		return;
 	}
 
-	session[s].cin += l - 4;
-	session[s].total_cin += l - 4;
-	sess_count[s].cin += l - 4;
-
-	session[s].pin++;
-	eth_tx += l - 4;
-
-	STAT(tun_tx_packets);
-	INC_STAT(tun_tx_bytes, l);
-
 	if (session[s].tbf_in && config->cluster_iam_master) { // Are we throttled and a master?? actually handle the throttled packets.
 		tbf_queue_packet(session[s].tbf_in, p, l);
 		return;
@@ -746,8 +754,25 @@ void processipin(tunnelidt t, sessionidt s, u8 *p, u16 l)
 		STAT(tun_tx_errors);
 		LOG(0, 0, s, t, "Error writing %d bytes to TUN device: %s (tunfd=%d, p=%p)\n",
 			l, strerror(errno), tunfd, p);
+
+		return;
 	}
 
+	if (session[s].snoop_ip && session[s].snoop_port)
+	{
+		// Snooping this session
+		snoop_send_packet(p + 4, l - 4, session[s].snoop_ip, session[s].snoop_port);
+	}
+
+	session[s].cin += l - 4;
+	session[s].total_cin += l - 4;
+	sess_count[s].cin += l - 4;
+
+	session[s].pin++;
+	eth_tx += l - 4;
+
+	STAT(tun_tx_packets);
+	INC_STAT(tun_tx_bytes, l - 4);
 }
 
 //
@@ -757,11 +782,20 @@ void processipin(tunnelidt t, sessionidt s, u8 *p, u16 l)
 void send_ipin(sessionidt s, u8 *buf, int len)
 {
 	LOG_HEX(5, "IP in throttled", buf, len);
+
 	if (write(tunfd, buf, len) < 0)
 	{
 		STAT(tun_tx_errors);
 		LOG(0, 0, 0, 0, "Error writing %d bytes to TUN device: %s (tunfd=%d, p=%p)\n",
 			len, strerror(errno), tunfd, buf);
+
+		return;
+	}
+
+	if (session[s].snoop_ip && session[s].snoop_port)
+	{
+		// Snooping this session
+		snoop_send_packet(buf + 4, len - 4, session[s].snoop_ip, session[s].snoop_port);
 	}
 
 	// Increment packet counters
@@ -771,6 +805,9 @@ void send_ipin(sessionidt s, u8 *buf, int len)
 
 	session[s].pin++;
 	eth_tx += len - 4;
+
+	STAT(tun_tx_packets);
+	INC_STAT(tun_tx_bytes, len - 4);
 }
 
 
@@ -807,7 +844,7 @@ void processccp(tunnelidt t, sessionidt s, u8 *p, u16 l)
 			*p = TerminateAck;		// close
 		if (!(q = makeppp(b, sizeof(b), p, l, t, s, PPPCCP)))
 		{
-			LOG(1,0,0,0, "Failed to send CCP packet.\n");	
+			LOG(1,0,0,0, "Failed to send CCP packet.\n");
 			return;
 		}
 		tunnelsend(b, l + (q - b), t); // send it
@@ -897,26 +934,6 @@ u8 *makeppp(u8 *b, int size, u8 *p, int l, tunnelidt t, sessionidt s, u16 mtype)
 	return b;
 }
 
-// find a PPP option, returns point to option, or 0 if not found
-u8 *findppp(u8 *b, u8 mtype)
-{
-	u16 l = ntohs(*(u16 *) (b + 2));
-	if (l < 4)
-		return 0;
-	b += 4;
-	l -= 4;
-	while (l)
-	{
-		if (l < b[1] || !b[1])
-			return 0;		// faulty
-		if (*b == mtype)
-			return b;
-		l -= b[1];
-		b += b[1];
-	}
-	return 0;
-}
-
 // Send initial LCP ConfigReq
 void initlcp(tunnelidt t, sessionidt s)
 {
@@ -942,7 +959,7 @@ void initlcp(tunnelidt t, sessionidt s)
 }
 
 // Send CCP reply
-void sendccp(tunnelidt t, sessionidt s)
+static void sendccp(tunnelidt t, sessionidt s)
 {
 	char *q, b[500] = {0};