X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=net%2Fsctp%2Fsocket.c;h=b811691c35bf4eba764efa3eba3b0daeac6eca64;hb=50aa4eb0b978f4a0283471c776ed812269ac8af5;hp=b6e4b89539b3178216037c53350f5591dde8a1b6;hpb=be9bf30c73184e0f1e4e0a50fb193d2a551bf75e;p=mv-sheeva.git

diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index b6e4b89539b..b811691c35b 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -172,7 +172,7 @@ static inline int sctp_verify_addr(struct sock *sk, union sctp_addr *addr,
 		return -EINVAL;
 
 	/* Is this a valid SCTP address?  */
-	if (!af->addr_valid(addr, sctp_sk(sk)))
+	if (!af->addr_valid(addr, sctp_sk(sk), NULL))
 		return -EINVAL;
 
 	if (!sctp_sk(sk)->pf->send_verify(sctp_sk(sk), (addr)))
@@ -1057,6 +1057,7 @@ static int __sctp_connect(struct sock* sk,
 	inet_sk(sk)->dport = htons(asoc->peer.port);
 	af = sctp_get_af_specific(to.sa.sa_family);
 	af->to_sk_daddr(&to, sk);
+	sk->sk_err = 0;
 
 	timeo = sock_sndtimeo(sk, sk->sk_socket->file->f_flags & O_NONBLOCK);
 	err = sctp_wait_for_connect(asoc, &timeo);
@@ -1228,7 +1229,7 @@ SCTP_STATIC void sctp_close(struct sock *sk, long timeout)
 
 	ep = sctp_sk(sk)->ep;
 
-	/* Walk all associations on a socket, not on an endpoint.  */
+	/* Walk all associations on an endpoint.  */
 	list_for_each_safe(pos, temp, &ep->asocs) {
 		asoc = list_entry(pos, struct sctp_association, asocs);
 
@@ -1241,13 +1242,13 @@ SCTP_STATIC void sctp_close(struct sock *sk, long timeout)
 			if (sctp_state(asoc, CLOSED)) {
 				sctp_unhash_established(asoc);
 				sctp_association_free(asoc);
+				continue;
+			}
+		}
 
-			} else if (sock_flag(sk, SOCK_LINGER) &&
-				   !sk->sk_lingertime)
-				sctp_primitive_ABORT(asoc, NULL);
-			else
-				sctp_primitive_SHUTDOWN(asoc, NULL);
-		} else
+		if (sock_flag(sk, SOCK_LINGER) && !sk->sk_lingertime)
+			sctp_primitive_ABORT(asoc, NULL);
+		else
 			sctp_primitive_SHUTDOWN(asoc, NULL);
 	}
 
@@ -2529,8 +2530,32 @@ static int sctp_setsockopt_associnfo(struct sock *sk, char __user *optval, int o
 
 	/* Set the values to the specific association */
 	if (asoc) {
-		if (assocparams.sasoc_asocmaxrxt != 0)
+		if (assocparams.sasoc_asocmaxrxt != 0) {
+			__u32 path_sum = 0;
+			int   paths = 0;
+			struct list_head *pos;
+			struct sctp_transport *peer_addr;
+
+			list_for_each(pos, &asoc->peer.transport_addr_list) {
+				peer_addr = list_entry(pos,
+						struct sctp_transport,
+						transports);
+				path_sum += peer_addr->pathmaxrxt;
+				paths++;
+			}
+
+			/* Only validate asocmaxrxt if we have more then
+			 * one path/transport.  We do this because path
+			 * retransmissions are only counted when we have more
+			 * then one path.
+			 */
+			if (paths > 1 &&
+			    assocparams.sasoc_asocmaxrxt > path_sum)
+				return -EINVAL;
+
 			asoc->max_retrans = assocparams.sasoc_asocmaxrxt;
+		}
+
 		if (assocparams.sasoc_cookie_life != 0) {
 			asoc->cookie_life.tv_sec =
 					assocparams.sasoc_cookie_life / 1000;
@@ -5317,6 +5342,7 @@ static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p,
 		 */
 		sctp_release_sock(sk);
 		current_timeo = schedule_timeout(current_timeo);
+		BUG_ON(sk != asoc->base.sk);
 		sctp_lock_sock(sk);
 
 		*timeo_p = current_timeo;
@@ -5604,12 +5630,14 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
 	 */
 	newsp->type = type;
 
-	spin_lock_bh(&oldsk->sk_lock.slock);
-	/* Migrate the backlog from oldsk to newsk. */
-	sctp_backlog_migrate(assoc, oldsk, newsk);
-	/* Migrate the association to the new socket. */
+	/* Mark the new socket "in-use" by the user so that any packets
+	 * that may arrive on the association after we've moved it are
+	 * queued to the backlog.  This prevents a potential race between
+	 * backlog processing on the old socket and new-packet processing
+	 * on the new socket.
+	 */
+	sctp_lock_sock(newsk);
 	sctp_assoc_migrate(assoc, newsk);
-	spin_unlock_bh(&oldsk->sk_lock.slock);
 
 	/* If the association on the newsk is already closed before accept()
 	 * is called, set RCV_SHUTDOWN flag.
@@ -5618,6 +5646,7 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
 		newsk->sk_shutdown |= RCV_SHUTDOWN;
 
 	newsk->sk_state = SCTP_SS_ESTABLISHED;
+	sctp_release_sock(newsk);
 }
 
 /* This proto struct describes the ULP interface for SCTP.  */