Fix tunnel port problem for 2.6.27

sources/2.6.27/connect.c

@@ -1368,13 +1368,16 @@ cifs_parse_mount_options(char *options, const char *devname,
 }
 
 static struct TCP_Server_Info *
-cifs_find_tcp_session(struct sockaddr_storage *addr)
+cifs_find_tcp_session(struct sockaddr_storage *addr, unsigned short int port)
 {
 	struct list_head *tmp;
 	struct TCP_Server_Info *server;
 	struct sockaddr_in *addr4 = (struct sockaddr_in *) addr;
 	struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) addr;
 
+	if (!port)
+		port = CIFS_PORT;
+
 	write_lock(&cifs_tcp_ses_lock);
 	list_for_each(tmp, &cifs_tcp_ses_list) {
 		server = list_entry(tmp, struct TCP_Server_Info,
@@ -1389,12 +1392,14 @@ cifs_find_tcp_session(struct sockaddr_storage *addr)
 			continue;
 
 		if (addr->ss_family == AF_INET &&
-		    (addr4->sin_addr.s_addr !=
-		     server->addr.sockAddr.sin_addr.s_addr))
+		    ((addr4->sin_addr.s_addr !=
+		     server->addr.sockAddr.sin_addr.s_addr) ||
+		     (htons(port) != server->addr.sockAddr.sin_port)))
 			continue;
 		else if (addr->ss_family == AF_INET6 &&
-			 memcmp(&server->addr.sockAddr6.sin6_addr,
-				&addr6->sin6_addr, sizeof(addr6->sin6_addr)))
+			 (memcmp(&server->addr.sockAddr6.sin6_addr,
+				&addr6->sin6_addr, sizeof(addr6->sin6_addr))
+			  || (htons(port) != server->addr.sockAddr6.sin6_port)))
 			continue;
 
 		++server->srv_count;
@@ -1614,8 +1619,8 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
 		bool noblocksnd, bool noautotune)
 {
 	int rc = 0;
+	int orig_port_error = 0;
 	int connected = 0;
-	__be16 orig_port = 0;
 
 	if (*csocket == NULL) {
 		rc = sock_create_kern(PF_INET, SOCK_STREAM,
@@ -1639,14 +1644,11 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
 				sizeof(struct sockaddr_in), 0);
 		if (rc >= 0)
 			connected = 1;
+		else
+			orig_port_error = 1;
 	}
 
-	if (!connected) {
-		/* save original port so we can retry user specified port
-			later if fall back ports fail this time  */
-		orig_port = psin_server->sin_port;
-
-		/* do not retry on the same port we just failed on */
+	if (!orig_port_error && !connected) {
 		if (psin_server->sin_port != htons(CIFS_PORT)) {
 			psin_server->sin_port = htons(CIFS_PORT);
 
@@ -1657,7 +1659,8 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
 				connected = 1;
 		}
 	}
-	if (!connected) {
+
+	if (!orig_port_error && !connected) {
 		psin_server->sin_port = htons(RFC1001_PORT);
 		rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *)
 					      psin_server,
@@ -1669,8 +1672,6 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
 	/* give up here - unless we want to retry on different
 		protocol families some day */
 	if (!connected) {
-		if (orig_port)
-			psin_server->sin_port = orig_port;
 		cFYI(1, ("Error %d connecting to server via ipv4", rc));
 		sock_release(*csocket);
 		*csocket = NULL;
@@ -1753,7 +1754,7 @@ ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket,
 {
 	int rc = 0;
 	int connected = 0;
-	__be16 orig_port = 0;
+	int orig_port_error = 0;
 
 	if (*csocket == NULL) {
 		rc = sock_create_kern(PF_INET6, SOCK_STREAM,
@@ -1778,13 +1779,11 @@ ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket,
 				sizeof(struct sockaddr_in6), 0);
 		if (rc >= 0)
 			connected = 1;
+		else
+			orig_port_error = 1;
 	}
 
-	if (!connected) {
-		/* save original port so we can retry user specified port
-			later if fall back ports fail this time  */
-
-		orig_port = psin_server->sin6_port;
+	if (!orig_port_error && !connected) {
 		/* do not retry on the same port we just failed on */
 		if (psin_server->sin6_port != htons(CIFS_PORT)) {
 			psin_server->sin6_port = htons(CIFS_PORT);
@@ -1796,7 +1795,8 @@ ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket,
 				connected = 1;
 		}
 	}
-	if (!connected) {
+
+	if (!orig_port_error && !connected) {
 		psin_server->sin6_port = htons(RFC1001_PORT);
 		rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *)
 				 psin_server, sizeof(struct sockaddr_in6), 0);
@@ -1807,8 +1807,6 @@ ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket,
 	/* give up here - unless we want to retry on different
 		protocol families some day */
 	if (!connected) {
-		if (orig_port)
-			psin_server->sin6_port = orig_port;
 		cFYI(1, ("Error %d connecting to server via ipv6", rc));
 		sock_release(*csocket);
 		*csocket = NULL;
@@ -2138,7 +2136,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
 		}
 	}
 
-	srvTcp = cifs_find_tcp_session(&addr);
+	srvTcp = cifs_find_tcp_session(&addr, volume_info.port);
 	if (!srvTcp) { /* create socket */
 		if (addr.ss_family == AF_INET6) {
 			cFYI(1, ("attempting ipv6 connect"));