[lkml]   [2018]   [Oct]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
Subject[PATCH v2 net-next] inet: do not set backlog if listen fails
We don't need to set the backlog if listen fails.
The sk_max_ack_backlog will be set in the caller inet_listen() and
dccp_listen_start() if inet_csk_listen_start() return without error.
So just remove this line to avoid this unnecessary operation.

Regarding sk_ack_backlog, we have to set it before a TCP/DCCP socket is
ready to accept new flows to avoid race, because dccp and tcp have lockless

Signed-off-by: Yafang Shao <>
net/ipv4/inet_connection_sock.c | 1 -
1 file changed, 1 deletion(-)

diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index dfd5009..cdd5c95 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -871,7 +871,6 @@ int inet_csk_listen_start(struct sock *sk, int backlog)


- sk->sk_max_ack_backlog = backlog;
sk->sk_ack_backlog = 0;

 \ /
  Last update: 2018-10-07 15:39    [W:0.081 / U:0.020 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site