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authorPatrick McManus <mcmanus@ducksong.com>2008-03-21 16:33:01 -0700
committerDavid S. Miller <davem@davemloft.net>2008-03-21 16:33:01 -0700
commitec3c0982a2dd1e671bad8e9d26c28dcba0039d87 (patch)
tree11a3cd7c530e4225a4c3d4c3f3cc54eb7d2e0e4f /net/ipv4/tcp_timer.c
parente4c78840284f3f51b1896cf3936d60a6033c4d2c (diff)
downloadop-kernel-dev-ec3c0982a2dd1e671bad8e9d26c28dcba0039d87.zip
op-kernel-dev-ec3c0982a2dd1e671bad8e9d26c28dcba0039d87.tar.gz
[TCP]: TCP_DEFER_ACCEPT updates - process as established
Change TCP_DEFER_ACCEPT implementation so that it transitions a connection to ESTABLISHED after handshake is complete instead of leaving it in SYN-RECV until some data arrvies. Place connection in accept queue when first data packet arrives from slow path. Benefits: - established connection is now reset if it never makes it to the accept queue - diagnostic state of established matches with the packet traces showing completed handshake - TCP_DEFER_ACCEPT timeouts are expressed in seconds and can now be enforced with reasonable accuracy instead of rounding up to next exponential back-off of syn-ack retry. Signed-off-by: Patrick McManus <mcmanus@ducksong.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_timer.c')
-rw-r--r--net/ipv4/tcp_timer.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index 803d758..160d16f 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -481,6 +481,11 @@ static void tcp_keepalive_timer (unsigned long data)
goto death;
}
+ if (tp->defer_tcp_accept.request && sk->sk_state == TCP_ESTABLISHED) {
+ tcp_send_active_reset(sk, GFP_ATOMIC);
+ goto death;
+ }
+
if (!sock_flag(sk, SOCK_KEEPOPEN) || sk->sk_state == TCP_CLOSE)
goto out;
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