[SCTP] Rename SCTP specific control message flags.

Rename SCTP specific control message flags to use SCTP_ prefix rather than
MSG_ prefix as per the latest sctp sockets API draft.
Signed-off-by: NIvan Skytte Jorgensen <isj-sctp@i1.dk>
Signed-off-by: NSridhar Samudrala <sri@us.ibm.com>

include/net/sctp/user.h

@@ -171,10 +171,10 @@ struct sctp_sndrcvinfo {
  */
 
 enum sctp_sinfo_flags {
-	MSG_UNORDERED = 1,  /* Send/receive message unordered. */
-	MSG_ADDR_OVER = 2,  /* Override the primary destination. */
-	MSG_ABORT=4,        /* Send an ABORT message to the peer. */
-	/* MSG_EOF is already defined per socket.h */
+	SCTP_UNORDERED = 1,  /* Send/receive message unordered. */
+	SCTP_ADDR_OVER = 2,  /* Override the primary destination. */
+	SCTP_ABORT=4,        /* Send an ABORT message to the peer. */
+	SCTP_EOF=MSG_FIN,    /* Initiate graceful shutdown process. */	
 };
 
 

net/sctp/sm_make_chunk.c

@@ -554,7 +554,7 @@ struct sctp_chunk *sctp_make_datafrag_empty(struct sctp_association *asoc,
 	dp.ppid   = sinfo->sinfo_ppid;
 
 	/* Set the flags for an unordered send.  */
-	if (sinfo->sinfo_flags & MSG_UNORDERED) {
+	if (sinfo->sinfo_flags & SCTP_UNORDERED) {
 		flags |= SCTP_DATA_UNORDERED;
 		dp.ssn = 0;
 	} else

net/sctp/socket.c

@@ -1389,27 +1389,27 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
 	SCTP_DEBUG_PRINTK("msg_len: %zu, sinfo_flags: 0x%x\n",
 			  msg_len, sinfo_flags);
 
-	/* MSG_EOF or MSG_ABORT cannot be set on a TCP-style socket. */
-	if (sctp_style(sk, TCP) && (sinfo_flags & (MSG_EOF | MSG_ABORT))) {
+	/* SCTP_EOF or SCTP_ABORT cannot be set on a TCP-style socket. */
+	if (sctp_style(sk, TCP) && (sinfo_flags & (SCTP_EOF | SCTP_ABORT))) {
 		err = -EINVAL;
 		goto out_nounlock;
 	}
 
-	/* If MSG_EOF is set, no data can be sent. Disallow sending zero
-	 * length messages when MSG_EOF|MSG_ABORT is not set.
-	 * If MSG_ABORT is set, the message length could be non zero with
+	/* If SCTP_EOF is set, no data can be sent. Disallow sending zero
+	 * length messages when SCTP_EOF|SCTP_ABORT is not set.
+	 * If SCTP_ABORT is set, the message length could be non zero with
 	 * the msg_iov set to the user abort reason.
  	 */
-	if (((sinfo_flags & MSG_EOF) && (msg_len > 0)) ||
-	    (!(sinfo_flags & (MSG_EOF|MSG_ABORT)) && (msg_len == 0))) {
+	if (((sinfo_flags & SCTP_EOF) && (msg_len > 0)) ||
+	    (!(sinfo_flags & (SCTP_EOF|SCTP_ABORT)) && (msg_len == 0))) {
 		err = -EINVAL;
 		goto out_nounlock;
 	}
 
-	/* If MSG_ADDR_OVER is set, there must be an address
+	/* If SCTP_ADDR_OVER is set, there must be an address
 	 * specified in msg_name.
 	 */
-	if ((sinfo_flags & MSG_ADDR_OVER) && (!msg->msg_name)) {
+	if ((sinfo_flags & SCTP_ADDR_OVER) && (!msg->msg_name)) {
 		err = -EINVAL;
 		goto out_nounlock;
 	}
@@ -1458,14 +1458,14 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
 			goto out_unlock;
 		}
 
-		if (sinfo_flags & MSG_EOF) {
+		if (sinfo_flags & SCTP_EOF) {
 			SCTP_DEBUG_PRINTK("Shutting down association: %p\n",
 					  asoc);
 			sctp_primitive_SHUTDOWN(asoc, NULL);
 			err = 0;
 			goto out_unlock;
 		}
-		if (sinfo_flags & MSG_ABORT) {
+		if (sinfo_flags & SCTP_ABORT) {
 			SCTP_DEBUG_PRINTK("Aborting association: %p\n", asoc);
 			sctp_primitive_ABORT(asoc, msg);
 			err = 0;
@@ -1477,7 +1477,7 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
 	if (!asoc) {
 		SCTP_DEBUG_PRINTK("There is no association yet.\n");
 
-		if (sinfo_flags & (MSG_EOF | MSG_ABORT)) {
+		if (sinfo_flags & (SCTP_EOF | SCTP_ABORT)) {
 			err = -EINVAL;
 			goto out_unlock;
 		}
@@ -1611,10 +1611,10 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
 
 	/* If an address is passed with the sendto/sendmsg call, it is used
 	 * to override the primary destination address in the TCP model, or
-	 * when MSG_ADDR_OVER flag is set in the UDP model.
+	 * when SCTP_ADDR_OVER flag is set in the UDP model.
 	 */
 	if ((sctp_style(sk, TCP) && msg_name) ||
-	    (sinfo_flags & MSG_ADDR_OVER)) {
+	    (sinfo_flags & SCTP_ADDR_OVER)) {
 		chunk_tp = sctp_assoc_lookup_paddr(asoc, &to);
 		if (!chunk_tp) {
 			err = -EINVAL;
@@ -4640,8 +4640,8 @@ SCTP_STATIC int sctp_msghdr_parse(const struct msghdr *msg,
 
 			/* Minimally, validate the sinfo_flags. */
 			if (cmsgs->info->sinfo_flags &
-			    ~(MSG_UNORDERED | MSG_ADDR_OVER |
-			      MSG_ABORT | MSG_EOF))
+			    ~(SCTP_UNORDERED | SCTP_ADDR_OVER |
+			      SCTP_ABORT | SCTP_EOF))
 				return -EINVAL;
 			break;
 

net/sctp/ulpevent.c

@@ -698,7 +698,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_rcvmsg(struct sctp_association *asoc,
 	event->ssn = ntohs(chunk->subh.data_hdr->ssn);
 	event->ppid = chunk->subh.data_hdr->ppid;
 	if (chunk->chunk_hdr->flags & SCTP_DATA_UNORDERED) {
-		event->flags |= MSG_UNORDERED;
+		event->flags |= SCTP_UNORDERED;
 		event->cumtsn = sctp_tsnmap_get_ctsn(&asoc->peer.tsn_map);
 	}
 	event->tsn = ntohl(chunk->subh.data_hdr->tsn);
@@ -824,7 +824,7 @@ void sctp_ulpevent_read_sndrcvinfo(const struct sctp_ulpevent *event,
 	 *
 	 * recvmsg() flags:
 	 *
-	 * MSG_UNORDERED - This flag is present when the message was sent
+	 * SCTP_UNORDERED - This flag is present when the message was sent
 	 *                 non-ordered.
 	 */
 	sinfo.sinfo_flags = event->flags;
@@ -839,7 +839,7 @@ void sctp_ulpevent_read_sndrcvinfo(const struct sctp_ulpevent *event,
 	 * This field will hold the current cumulative TSN as
 	 * known by the underlying SCTP layer.  Note this field is
 	 * ignored when sending and only valid for a receive
-	 * operation when sinfo_flags are set to MSG_UNORDERED.
+	 * operation when sinfo_flags are set to SCTP_UNORDERED.
 	 */
 	sinfo.sinfo_cumtsn = event->cumtsn;
 	/* sinfo_assoc_id: sizeof (sctp_assoc_t)