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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2011-11-30 01:02:41 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-11-30 16:55:26 -0500 |
| commit | d8a6e65f8b6b6b0142ebab578472906d89d63657 (patch) | |
| tree | a0231b1aa1c44252c79c9cb769bd0695e021f1b6 /Documentation/networking | |
| parent | de565664041d954b60f87e3d576a784cf25672d0 (diff) | |
| download | linux-d8a6e65f8b6b6b0142ebab578472906d89d63657.tar.gz linux-d8a6e65f8b6b6b0142ebab578472906d89d63657.tar.bz2 linux-d8a6e65f8b6b6b0142ebab578472906d89d63657.zip | |
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>
Diffstat (limited to 'Documentation/networking')
| -rw-r--r-- | Documentation/networking/ip-sysctl.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index b8867061fce4..cb2b1c6a2ce1 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -175,6 +175,9 @@ tcp_congestion_control - STRING connections. The algorithm "reno" is always available, but additional choices may be available based on kernel configuration. Default is set as part of kernel configuration. + For passive connections, the listener congestion control choice + is inherited. + [see setsockopt(listenfd, SOL_TCP, TCP_CONGESTION, "name" ...) ] tcp_cookie_size - INTEGER Default size of TCP Cookie Transactions (TCPCT) option, that may be |