2 files changed, 56 insertions, 41 deletions

diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c
index ac947251dd37..4a1c9afc9d74 100644
--- a/net/tipc/bcast.c
+++ b/net/tipc/bcast.c
@@ -496,7 +496,7 @@ void tipc_bclink_rcv(struct sk_buff *buf)
 	struct tipc_node *node;
 	u32 next_in;
 	u32 seqno;
-	int deferred;
+	int deferred = 0;
 
 	/* Screen out unwanted broadcast messages */
 
@@ -547,7 +547,7 @@ receive:
 			tipc_bclink_unlock();
 			tipc_node_unlock(node);
 			if (likely(msg_mcast(msg)))
-				tipc_port_mcast_rcv(buf, NULL);
+				tipc_sk_mcast_rcv(buf);
 			else
 				kfree_skb(buf);
 		} else if (msg_user(msg) == MSG_BUNDLER) {
@@ -626,8 +626,7 @@ receive:
 		node->bclink.deferred_size += deferred;
 		bclink_update_last_sent(node, seqno);
 		buf = NULL;
-	} else
-		deferred = 0;
+	}
 
 	tipc_bclink_lock();
 
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 8d30995682b1..b28eea50c7fc 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -53,6 +53,7 @@ static void tipc_data_ready(struct sock *sk);
 static void tipc_write_space(struct sock *sk);
 static int tipc_release(struct socket *sock);
 static int tipc_accept(struct socket *sock, struct socket *new_sock, int flags);
+static int tipc_wait_for_sndmsg(struct socket *sock, long *timeo_p);
 
 static const struct proto_ops packet_ops;
 static const struct proto_ops stream_ops;
@@ -534,6 +535,58 @@ static unsigned int tipc_poll(struct file *file, struct socket *sock,
 	return mask;
 }
 
+/**
+ * tipc_sendmcast - send multicast message
+ * @sock: socket structure
+ * @seq: destination address
+ * @iov: message data to send
+ * @dsz: total length of message data
+ * @timeo: timeout to wait for wakeup
+ *
+ * Called from function tipc_sendmsg(), which has done all sanity checks
+ * Returns the number of bytes sent on success, or errno
+ */
+static int tipc_sendmcast(struct  socket *sock, struct tipc_name_seq *seq,
+			  struct iovec *iov, size_t dsz, long timeo)
+{
+	struct sock *sk = sock->sk;
+	struct tipc_msg *mhdr = &tipc_sk(sk)->port.phdr;
+	struct sk_buff *buf;
+	uint mtu;
+	int rc;
+
+	msg_set_type(mhdr, TIPC_MCAST_MSG);
+	msg_set_lookup_scope(mhdr, TIPC_CLUSTER_SCOPE);
+	msg_set_destport(mhdr, 0);
+	msg_set_destnode(mhdr, 0);
+	msg_set_nametype(mhdr, seq->type);
+	msg_set_namelower(mhdr, seq->lower);
+	msg_set_nameupper(mhdr, seq->upper);
+	msg_set_hdr_sz(mhdr, MCAST_H_SIZE);
+
+new_mtu:
+	mtu = tipc_bclink_get_mtu();
+	rc = tipc_msg_build2(mhdr, iov, 0, dsz, mtu, &buf);
+	if (unlikely(rc < 0))
+		return rc;
+
+	do {
+		rc = tipc_bclink_xmit(buf);
+		if (likely(rc >= 0)) {
+			rc = dsz;
+			break;
+		}
+		if (rc == -EMSGSIZE)
+			goto new_mtu;
+		if (rc != -ELINKCONG)
+			break;
+		rc = tipc_wait_for_sndmsg(sock, &timeo);
+		if (rc)
+			kfree_skb_list(buf);
+	} while (!rc);
+	return rc;
+}
+
 /* tipc_sk_mcast_rcv - Deliver multicast message to all destination sockets
  */
 void tipc_sk_mcast_rcv(struct sk_buff *buf)
@@ -670,43 +723,6 @@ static int tipc_wait_for_sndmsg(struct socket *sock, long *timeo_p)
 }
 
 /**
- * tipc_sendmcast - send multicast message
- * @sock: socket structure
- * @seq: destination address
- * @iov: message data to send
- * @dsz: total length of message data
- * @timeo: timeout to wait for wakeup
- *
- * Called from function tipc_sendmsg(), which has done all sanity checks
- * Returns the number of bytes sent on success, or errno
- */
-static int tipc_sendmcast(struct  socket *sock, struct tipc_name_seq *seq,
-			  struct iovec *iov, size_t dsz, long timeo)
-{
-	struct sock *sk = sock->sk;
-	struct tipc_sock *tsk = tipc_sk(sk);
-	int rc;
-
-	do {
-		if (sock->state != SS_READY) {
-			rc = -EOPNOTSUPP;
-			break;
-		}
-		rc = tipc_port_mcast_xmit(&tsk->port, seq, iov, dsz);
-		if (likely(rc >= 0)) {
-			if (sock->state != SS_READY)
-				sock->state = SS_CONNECTING;
-			break;
-		}
-		if (rc != -ELINKCONG)
-			break;
-		rc = tipc_wait_for_sndmsg(sock, &timeo);
-	} while (!rc);
-
-	return rc;
-}
-
-/**
  * tipc_sendmsg - send message in connectionless manner
  * @iocb: if NULL, indicates that socket lock is already held
  * @sock: socket structure