2014-04-16 16:25:13

by Kenjiro Nakayama

Subject: [PATCH v3] 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 <[email protected]>
---
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

2014-04-19 00:42:32

by Neal Cardwell

Subject: Re: [PATCH v3] tcp: Add a TCP_FASTOPEN socket option to get a max backlog on its listner

On Wed, Apr 16, 2014 at 12:25 PM, Kenjiro Nakayama
<[email protected]> wrote:
> This patch adds a TCP_FASTOPEN socket option to get a max backlog on its
> listener to getsockopt().
>
> Signed-off-by: Kenjiro Nakayama <[email protected]>
> ---
> net/ipv4/tcp.c | 8 ++++++++
> 1 file changed, 8 insertions(+)

Acked-by: Neal Cardwell <[email protected]>

Seems fine to me. Thanks, Kenjiro.

neal

2014-04-20 22:19:47

by David Miller

Subject: Re: [PATCH v3] tcp: Add a TCP_FASTOPEN socket option to get a max backlog on its listner

From: Kenjiro Nakayama <[email protected]>
Date: Thu, 17 Apr 2014 01:25:01 +0900

> This patch adds a TCP_FASTOPEN socket option to get a max backlog on its
> listener to getsockopt().
>
> Signed-off-by: Kenjiro Nakayama <[email protected]>

Applied.