From: Ben Hutchings <ben@decadent.org.uk>
Date: Thu, 29 Dec 2016 03:06:54 +0000 (+0000)
Subject: net: Add __sock_queue_rcv_skb()
X-Git-Tag: v3.16.40~12
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bed7167a188ec74018825232eeee67e2032275f8;p=thirdparty%2Fkernel%2Fstable.git

net: Add __sock_queue_rcv_skb()

Extraxcted from commit e6afc8ace6dd5cef5e812f26c72579da8806f5ac
"udp: remove headers from UDP packets before queueing".

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

diff --git a/include/net/sock.h b/include/net/sock.h
index 2b2960fcc878c..f957f7c4fa20f 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -2026,6 +2026,7 @@ void sk_reset_timer(struct sock *sk, struct timer_list *timer,
 
 void sk_stop_timer(struct sock *sk, struct timer_list *timer);
 
+int __sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
 int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
 
 int sock_queue_err_skb(struct sock *sk, struct sk_buff *skb);
diff --git a/net/core/sock.c b/net/core/sock.c
index ac9aa2878d996..504a2a96ff790 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -432,9 +432,8 @@ static void sock_disable_timestamp(struct sock *sk, unsigned long flags)
 }
 
 
-int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
+int __sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 {
-	int err;
 	int skb_len;
 	unsigned long flags;
 	struct sk_buff_head *list = &sk->sk_receive_queue;
@@ -445,10 +444,6 @@ int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 		return -ENOMEM;
 	}
 
-	err = sk_filter(sk, skb);
-	if (err)
-		return err;
-
 	if (!sk_rmem_schedule(sk, skb, skb->truesize)) {
 		atomic_inc(&sk->sk_drops);
 		return -ENOBUFS;
@@ -478,6 +473,18 @@ int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 		sk->sk_data_ready(sk);
 	return 0;
 }
+EXPORT_SYMBOL(__sock_queue_rcv_skb);
+
+int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
+{
+	int err;
+
+	err = sk_filter(sk, skb);
+	if (err)
+		return err;
+
+	return __sock_queue_rcv_skb(sk, skb);
+}
 EXPORT_SYMBOL(sock_queue_rcv_skb);
 
 int sk_receive_skb(struct sock *sk, struct sk_buff *skb, const int nested)