net: correct sk_acceptq_is_full()

The "backlog" argument in listen() specifies
the maximom length of pending connections,
so the accept queue should be considered full
if there are exactly "backlog" elements.

Signed-off-by: liuyacan <yacanliu@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/sock.h b/include/net/sock.h
index 636810ddcd9ba6a0f0ae58fad9c32f68374a7e19..0b6266fd6bf6f4496b09dd170869ff4db38dfeb9 100644 (file)
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -936,7 +936,7 @@ static inline void sk_acceptq_added(struct sock *sk)
 
 static inline bool sk_acceptq_is_full(const struct sock *sk)
 {
-       return READ_ONCE(sk->sk_ack_backlog) > READ_ONCE(sk->sk_max_ack_backlog);
+       return READ_ONCE(sk->sk_ack_backlog) >= READ_ONCE(sk->sk_max_ack_backlog);
 }
 
 /*