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authorYuchung Cheng <ycheng@google.com>2012-07-19 06:43:11 +0000
committerDavid S. Miller <davem@davemloft.net>2012-07-19 11:02:03 -0700
commit67da22d23fa6f3324e03bcd0580b914b2e4afbf3 (patch)
treee794826d1dd7e30cf0885cbe93f22bc050c62359 /Documentation/networking
parentaab4874355679c70f93993cf3b3fd74643b9ac33 (diff)
downloadlinux-67da22d23fa6f3324e03bcd0580b914b2e4afbf3.tar.bz2
net-tcp: Fast Open client - cookie-less mode
In trusted networks, e.g., intranet, data-center, the client does not need to use Fast Open cookie to mitigate DoS attacks. In cookie-less mode, sendmsg() with MSG_FASTOPEN flag will send SYN-data regardless of cookie availability. Signed-off-by: Yuchung Cheng <ycheng@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking')
-rw-r--r--Documentation/networking/ip-sysctl.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 03964e088180..5f3ef7f7fcec 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -476,6 +476,8 @@ tcp_fastopen - INTEGER
The values (bitmap) are:
1: Enables sending data in the opening SYN on the client
+ 5: Enables sending data in the opening SYN on the client regardless
+ of cookie availability.
Default: 0