diff options
| author | Yuchung Cheng <[email protected]> | 2012-10-19 15:14:44 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2012-10-22 19:16:06 +0000 |
| commit | 6f73601efb35c7003f5c58c2bc6fd08f3652169c (patch) | |
| tree | f77807af2f6bbe08104b4563eb150e9e425dfce6 /net/ipv4/tcp_input.c | |
| parent | Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/lin... (diff) | |
| download | kernel-6f73601efb35c7003f5c58c2bc6fd08f3652169c.tar.gz kernel-6f73601efb35c7003f5c58c2bc6fd08f3652169c.zip | |
tcp: add SYN/data info to TCP_INFO
Add a bit TCPI_OPT_SYN_DATA (32) to the socket option TCP_INFO:tcpi_options.
It's set if the data in SYN (sent or received) is acked by SYN-ACK. Server or
client application can use this information to check Fast Open success rate.
Signed-off-by: Yuchung Cheng <[email protected]>
Acked-by: Neal Cardwell <[email protected]>
Acked-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'net/ipv4/tcp_input.c')
| -rw-r--r-- | net/ipv4/tcp_input.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 432c36649db3..036f85738141 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -5646,6 +5646,7 @@ static bool tcp_rcv_fastopen_synack(struct sock *sk, struct sk_buff *synack, tcp_rearm_rto(sk); return true; } + tp->syn_data_acked = tp->syn_data; return false; } |