From: liuyacan <yacanliu@xxxxxxx> [ Upstream commit f211ac154577ec9ccf07c15f18a6abf0d9bdb4ab ] 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@xxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- include/net/sock.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/net/sock.h b/include/net/sock.h index 129d200bccb4..a95f38a4b8c6 100644 --- 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); } /* -- 2.30.1