From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kenjiro Nakayama Subject: [PATCH v2] ipv4: Add option to get TCP_FASTOPEN to getsockopt() Date: Tue, 15 Apr 2014 21:35:11 +0900 Message-ID: <87r44yixds.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 Hi, TCP_FASTOPEN option can be set via setsockopt(), but the value cannot be gotten via getsockopt(). This patch adds the option to getsockopt(). Sighned-off-by: Kenjiro Nakayama Add option to get TCP_FASTOPEN to getsockopt() --- net/ipv4/tcp.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 4bd6d52..86186f4 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2916,6 +2916,13 @@ 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: + val = icsk->icsk_accept_queue.fastopenq ? + icsk->icsk_accept_queue.fastopenq->max_qlen + : sysctl_tcp_fastopen; + break; + case TCP_TIMESTAMP: val = tcp_time_stamp + tp->tsoffset; break; -- 1.9.0