[SCTP]: "list_for_each()" -> "list_for_each_entry()" where appropriate.

Replacing (almost) all invocations of list_for_each() with
list_for_each_entry() tightens up the code and allows for the deletion
of numerous list iterator variables that are no longer necessary.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sctp/bind_addr.c b/net/sctp/bind_addr.c
index ceefda0..80e6df0 100644
--- a/net/sctp/bind_addr.c
+++ b/net/sctp/bind_addr.c
@@ -67,15 +67,13 @@
 			int flags)
 {
 	struct sctp_sockaddr_entry *addr;
-	struct list_head *pos;
 	int error = 0;
 
 	/* All addresses share the same port.  */
 	dest->port = src->port;
 
 	/* Extract the addresses which are relevant for this scope.  */
-	list_for_each(pos, &src->address_list) {
-		addr = list_entry(pos, struct sctp_sockaddr_entry, list);
+	list_for_each_entry(addr, &src->address_list, list) {
 		error = sctp_copy_one_addr(dest, &addr->a, scope,
 					   gfp, flags);
 		if (error < 0)
@@ -87,9 +85,7 @@
 	 * the assumption that we must be sitting behind a NAT.
 	 */
 	if (list_empty(&dest->address_list) && (SCTP_SCOPE_GLOBAL == scope)) {
-		list_for_each(pos, &src->address_list) {
-			addr = list_entry(pos, struct sctp_sockaddr_entry,
-					  list);
+		list_for_each_entry(addr, &src->address_list, list) {
 			error = sctp_copy_one_addr(dest, &addr->a,
 						   SCTP_SCOPE_LINK, gfp,
 						   flags);
@@ -115,14 +111,12 @@
 			gfp_t gfp)
 {
 	struct sctp_sockaddr_entry *addr;
-	struct list_head *pos;
 	int error = 0;
 
 	/* All addresses share the same port.  */
 	dest->port = src->port;
 
-	list_for_each(pos, &src->address_list) {
-		addr = list_entry(pos, struct sctp_sockaddr_entry, list);
+	list_for_each_entry(addr, &src->address_list, list) {
 		error = sctp_add_bind_addr(dest, &addr->a, 1, gfp);
 		if (error < 0)
 			break;
@@ -273,8 +267,7 @@
 
 	addrparms = retval;
 
-	list_for_each(pos, &bp->address_list) {
-		addr = list_entry(pos, struct sctp_sockaddr_entry, list);
+	list_for_each_entry(addr, &bp->address_list, list) {
 		af = sctp_get_af_specific(addr->a.v4.sin_family);
 		len = af->to_addr_param(&addr->a, &rawaddr);
 		memcpy(addrparms.v, &rawaddr, len);