Commit 1536e285 authored Apr 17, 2014 by Kenjiro Nakayama Committed by David S. Miller Apr 20, 2014

tcp: Add a TCP_FASTOPEN socket option to get a max backlog on its listner



This patch adds a TCP_FASTOPEN socket option to get a max backlog on its
listener to getsockopt().

Signed-off-by: Kenjiro Nakayama <nakayamakenjiro@gmail.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 6ff01dbb

net/ipv4/tcp.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -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;