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-rw-r--r--Documentation/networking/ip-sysctl.txt6
1 files changed, 5 insertions, 1 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index fd26788e8c96..5f53faff4e25 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -479,6 +479,10 @@ tcp_no_metrics_save - BOOLEAN
degradation. If set, TCP will not cache metrics on closing
connections.
+tcp_no_ssthresh_metrics_save - BOOLEAN
+ Controls whether TCP saves ssthresh metrics in the route cache.
+ Default is 1, which disables ssthresh metrics.
+
tcp_orphan_retries - INTEGER
This value influences the timeout of a locally closed TCP connection,
when RTO retransmissions remain unacknowledged.
@@ -603,7 +607,7 @@ tcp_synack_retries - INTEGER
with the current initial RTO of 1second. With this the final timeout
for a passive TCP connection will happen after 63seconds.
-tcp_syncookies - BOOLEAN
+tcp_syncookies - INTEGER
Only valid when the kernel was compiled with CONFIG_SYN_COOKIES
Send out syncookies when the syn backlog queue of a socket
overflows. This is to prevent against the common 'SYN flood attack'