tcp: inherit listener congestion control for passive cnx
authorEric Dumazet <eric.dumazet@gmail.com>
Wed, 30 Nov 2011 01:02:41 +0000 (01:02 +0000)
committerDavid S. Miller <davem@davemloft.net>
Wed, 30 Nov 2011 21:55:26 +0000 (16:55 -0500)
commitd8a6e65f8b6b6b0142ebab578472906d89d63657
treea0231b1aa1c44252c79c9cb769bd0695e021f1b6
parentde565664041d954b60f87e3d576a784cf25672d0
tcp: inherit listener congestion control for passive cnx

Rick Jones reported that TCP_CONGESTION sockopt performed on a listener
was ignored for its children sockets : right after accept() the
congestion control for new socket is the system default one.

This seems an oversight of the initial design (quoted from Stephen)

Based on prior investigation and patch from Rick.

Reported-by: Rick Jones <rick.jones2@hp.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Stephen Hemminger <shemminger@vyatta.com>
CC: Yuchung Cheng <ycheng@google.com>
Tested-by: Rick Jones <rick.jones2@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Documentation/networking/ip-sysctl.txt
net/ipv4/tcp_ipv4.c
net/ipv4/tcp_minisocks.c