staging: lustre: lnet: replace list_for_each with list_for_each_entry

Replace use of the combination of list_for_each() and list_entry() with
list_for_each_entry() to simplify the code and remove variables that are
used only in list_for_each().
Issue found and corrected using Coccinelle script:

@r@
expression head, member, e;
type T1, T2, T3;
iterator name list_for_each, list_for_each_entry;
identifier pos, var;
@@

-T1 *pos;
...when!=pos

-list_for_each(pos, head)
+list_for_each_entry(var, head, member)
{
...when!=pos
   when!=T3 *var;
-var = list_entry(pos, T2, member);
...when!=pos
}
...when!=pos
Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c

@@ -176,12 +176,9 @@ struct ksock_peer *
 ksocknal_find_peer_locked(struct lnet_ni *ni, struct lnet_process_id id)
 {
 	struct list_head *peer_list = ksocknal_nid2peerlist(id.nid);
-	struct list_head *tmp;
 	struct ksock_peer *peer;
 
-	list_for_each(tmp, peer_list) {
-		peer = list_entry(tmp, struct ksock_peer, ksnp_list);
-
+	list_for_each_entry(peer, peer_list, ksnp_list) {
 		LASSERT(!peer->ksnp_closing);
 
 		if (peer->ksnp_ni != ni)
@@ -453,7 +450,6 @@ int
 ksocknal_add_peer(struct lnet_ni *ni, struct lnet_process_id id, __u32 ipaddr,
 		  int port)
 {
-	struct list_head *tmp;
 	struct ksock_peer *peer;
 	struct ksock_peer *peer2;
 	struct ksock_route *route;
@@ -491,9 +487,7 @@ ksocknal_add_peer(struct lnet_ni *ni, struct lnet_process_id id, __u32 ipaddr,
 	}
 
 	route2 = NULL;
-	list_for_each(tmp, &peer->ksnp_routes) {
-		route2 = list_entry(tmp, struct ksock_route, ksnr_list);
-
+	list_for_each_entry(route2, &peer->ksnp_routes, ksnr_list) {
 		if (route2->ksnr_ipaddr == ipaddr)
 			break;
 
@@ -1854,12 +1848,10 @@ ksocknal_query(struct lnet_ni *ni, lnet_nid_t nid, unsigned long *when)
 
 	peer = ksocknal_find_peer_locked(ni, id);
 	if (peer) {
-		struct list_head *tmp;
 		struct ksock_conn *conn;
 		int bufnob;
 
-		list_for_each(tmp, &peer->ksnp_conns) {
-			conn = list_entry(tmp, struct ksock_conn, ksnc_list);
+		list_for_each_entry(conn, &peer->ksnp_conns, ksnc_list) {
 			bufnob = conn->ksnc_sock->sk->sk_wmem_queued;
 
 			if (bufnob < conn->ksnc_tx_bufnob) {