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authorYuchung Cheng <ycheng@google.com>2017-11-09 00:01:26 +0300
committerDavid S. Miller <davem@davemloft.net>2017-11-11 12:53:16 +0300
commit713bafea92920103cd3d361657406cf04d0e22dd (patch)
tree505a887887bb48dc443388b0078ad176ff6edb5b /Documentation/networking/ip-sysctl.txt
parente4ec1384132ead18e972f1180e958aa0b69abd11 (diff)
downloadlinux-713bafea92920103cd3d361657406cf04d0e22dd.tar.xz
tcp: retire FACK loss detection
FACK loss detection has been disabled by default and the successor RACK subsumed FACK and can handle reordering better. This patch removes FACK to simplify TCP loss recovery. Signed-off-by: Yuchung Cheng <ycheng@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Neal Cardwell <ncardwell@google.com> Reviewed-by: Soheil Hassas Yeganeh <soheil@google.com> Reviewed-by: Priyaranjan Jha <priyarjha@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking/ip-sysctl.txt')
-rw-r--r--Documentation/networking/ip-sysctl.txt3
1 files changed, 1 insertions, 2 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index d8676dda7fa6..46c7e1085efc 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -289,8 +289,7 @@ tcp_ecn_fallback - BOOLEAN
Default: 1 (fallback enabled)
tcp_fack - BOOLEAN
- Enable FACK congestion avoidance and fast retransmission.
- The value is not used, if tcp_sack is not enabled.
+ This is a legacy option, it has no effect anymore.
tcp_fin_timeout - INTEGER
The length of time an orphaned (no longer referenced by any