From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kenjiro Nakayama Subject: [PATCH v3] tcp: Add a TCP_FASTOPEN socket option to get a max backlog on its listner Date: Thu, 17 Apr 2014 01:25:01 +0900 Message-ID: <87a9bljl7m.fsf@gmail.com> Mime-Version: 1.0 Content-Type: text/plain Cc: Neal Cardwell , Netdev , Yuchung Cheng , Eric Dumazet To: LKML Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org This patch adds a TCP_FASTOPEN socket option to get a max backlog on its listener to getsockopt(). Signed-off-by: Kenjiro Nakayama --- net/ipv4/tcp.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 4bd6d52..eb1dde3 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2916,6 +2916,14 @@ static int do_tcp_getsockopt(struct sock *sk, int level, case TCP_USER_TIMEOUT: val = jiffies_to_msecs(icsk->icsk_user_timeout); break; + + case TCP_FASTOPEN: + if (icsk->icsk_accept_queue.fastopenq != NULL) + val = icsk->icsk_accept_queue.fastopenq->max_qlen; + else + val = 0; + break; + case TCP_TIMESTAMP: val = tcp_time_stamp + tp->tsoffset; break; -- 1.9.0