[TCP]: Consolidate checking for tcp orphan count being too big.

tcp_out_of_resources() and tcp_close() perform the
same checking of number of orphan sockets. Move this
code into common place.

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/net/tcp.h b/include/net/tcp.h
index e22b4f0305a3..a8af9ae00177 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -254,6 +254,12 @@ static inline int between(__u32 seq1, __u32 seq2, __u32 seq3)
         return seq3 - seq2 >= seq1 - seq2;
 }
 
+static inline int tcp_too_many_orphans(struct sock *sk, int num)
+{
+        return (num > sysctl_tcp_max_orphans) ||
+                (sk->sk_wmem_queued > SOCK_MIN_SNDBUF &&
+                 atomic_read(&tcp_memory_allocated) > sysctl_tcp_mem[2]);
+}
 
 extern struct proto tcp_prot;