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authorYuchung Cheng <ycheng@google.com>2012-07-19 10:43:11 +0400
committerDavid S. Miller <davem@davemloft.net>2012-07-19 22:02:03 +0400
commit67da22d23fa6f3324e03bcd0580b914b2e4afbf3 (patch)
treee794826d1dd7e30cf0885cbe93f22bc050c62359 /include/linux/tcp.h
parentaab4874355679c70f93993cf3b3fd74643b9ac33 (diff)
downloadlinux-67da22d23fa6f3324e03bcd0580b914b2e4afbf3.tar.xz
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 'include/linux/tcp.h')
-rw-r--r--include/linux/tcp.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 1edf96afab44..9febfb685c33 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -387,6 +387,7 @@ struct tcp_sock {
u8 repair_queue;
u8 do_early_retrans:1,/* Enable RFC5827 early-retransmit */
early_retrans_delayed:1, /* Delayed ER timer installed */
+ syn_data:1, /* SYN includes data */
syn_fastopen:1; /* SYN includes Fast Open option */
/* RTT measurement */