sock: remove skb argument from sk_rcvqueues_full

It hasn't been used since commit 0fd7bac(net: relax rcvbuf limits).

Signed-off-by: Sorin Dumitru <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

include/net/sock.h

···
  * Do not take into account this skb truesize,
  * to allow even a single big packet to come.
  */
-static inline bool sk_rcvqueues_full(const struct sock *sk, const struct sk_buff *skb,
-				     unsigned int limit)
+static inline bool sk_rcvqueues_full(const struct sock *sk, unsigned int limit)
 {
 	unsigned int qsize = sk->sk_backlog.len + atomic_read(&sk->sk_rmem_alloc);
 
···
 static inline __must_check int sk_add_backlog(struct sock *sk, struct sk_buff *skb,
 					      unsigned int limit)
 {
-	if (sk_rcvqueues_full(sk, skb, limit))
+	if (sk_rcvqueues_full(sk, limit))
 		return -ENOBUFS;
 
 	__sk_add_backlog(sk, skb);

net/core/sock.c

···
 
 	skb->dev = NULL;
 
-	if (sk_rcvqueues_full(sk, skb, sk->sk_rcvbuf)) {
+	if (sk_rcvqueues_full(sk, sk->sk_rcvbuf)) {
 		atomic_inc(&sk->sk_drops);
 		goto discard_and_relse;
 	}

net/ipv4/udp.c

···
 		goto csum_error;
 
 
-	if (sk_rcvqueues_full(sk, skb, sk->sk_rcvbuf)) {
+	if (sk_rcvqueues_full(sk, sk->sk_rcvbuf)) {
 		UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_RCVBUFERRORS,
 				 is_udplite);
 		goto drop;

net/ipv6/udp.c

···
 			goto csum_error;
 	}
 
-	if (sk_rcvqueues_full(sk, skb, sk->sk_rcvbuf)) {
+	if (sk_rcvqueues_full(sk, sk->sk_rcvbuf)) {
 		UDP6_INC_STATS_BH(sock_net(sk),
 				  UDP_MIB_RCVBUFERRORS, is_udplite);
 		goto drop;