From 67da22d23fa6f3324e03bcd0580b914b2e4afbf3 Mon Sep 17 00:00:00 2001 From: Yuchung Cheng Date: Thu, 19 Jul 2012 06:43:11 +0000 Subject: 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 Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/tcp.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux/tcp.h') 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 */ -- cgit v1.2.3