diff options
| author | JP Abgrall <jpa@google.com> | 2014-02-07 18:40:10 -0800 |
|---|---|---|
| committer | John Stultz <john.stultz@linaro.org> | 2016-02-16 13:51:43 -0800 |
| commit | 72fc8653dc090a65c330ffd7bf3e7dda1271ffe0 (patch) | |
| tree | 2222b8229ed45dd5684bd560dc1f98ed2cf22704 /include/net/tcp.h | |
| parent | 7c121720fa14889d59e933aad0a8b9ce948a39ae (diff) | |
tcp: add a sysctl to config the tcp_default_init_rwnd
The default initial rwnd is hardcoded to 10.
Now we allow it to be controlled via
/proc/sys/net/ipv4/tcp_default_init_rwnd
which limits the values from 3 to 100
This is somewhat needed because ipv6 routes are
autoconfigured by the kernel.
See "An Argument for Increasing TCP's Initial Congestion Window"
in https://developers.google.com/speed/articles/tcp_initcwnd_paper.pdf
Change-Id: I386b2a9d62de0ebe05c1ebe1b4bd91b314af5c54
Signed-off-by: JP Abgrall <jpa@google.com>
Conflicts:
net/ipv4/sysctl_net_ipv4.c
net/ipv4/tcp_input.c
Diffstat (limited to 'include/net/tcp.h')
| -rw-r--r-- | include/net/tcp.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index 0020825157e2..b64bdeea00a9 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -284,6 +284,7 @@ extern int sysctl_tcp_autocorking; extern int sysctl_tcp_invalid_ratelimit; extern int sysctl_tcp_pacing_ss_ratio; extern int sysctl_tcp_pacing_ca_ratio; +extern int sysctl_tcp_default_init_rwnd; extern atomic_long_t tcp_memory_allocated; extern struct percpu_counter tcp_sockets_allocated; |