From: Eric Dumazet <edumazet@google.com>
Date: Mon, 16 Mar 2015 04:12:12 +0000 (-0700)
Subject: net: add sk_fullsock() helper
X-Git-Tag: v3.18.17~27
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2ed8cb3d22b59eda73c203412d02add4d0901255;p=thirdparty%2Fkernel%2Fstable.git

net: add sk_fullsock() helper

[ Upstream commit 1d0ab253872cdd3d8e7913f59c266c7fd01771d0 ]

We have many places where we want to check if a socket is
not a timewait or request socket. Use a helper to avoid
hard coding this.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
---

diff --git a/include/net/sock.h b/include/net/sock.h
index c8146ed9e66a5..4406dbe491f01 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -67,6 +67,7 @@
 #include <linux/atomic.h>
 #include <net/dst.h>
 #include <net/checksum.h>
+#include <net/tcp_states.h>
 #include <linux/net_tstamp.h>
 
 struct cgroup;
@@ -2267,6 +2268,14 @@ static inline struct sock *skb_steal_sock(struct sk_buff *skb)
 	return NULL;
 }
 
+/* This helper checks if a socket is a full socket,
+ * ie _not_ a timewait or request socket.
+ */
+static inline bool sk_fullsock(const struct sock *sk)
+{
+	return (1 << sk->sk_state) & ~(TCPF_TIME_WAIT | TCPF_NEW_SYN_RECV);
+}
+
 void sock_enable_timestamp(struct sock *sk, int flag);
 int sock_get_timestamp(struct sock *, struct timeval __user *);
 int sock_get_timestampns(struct sock *, struct timespec __user *);