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| author | Yuchung Cheng <ycheng@google.com> | 2012-10-19 15:14:44 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-10-22 15:16:06 -0400 |
| commit | 6f73601efb35c7003f5c58c2bc6fd08f3652169c (patch) | |
| tree | f77807af2f6bbe08104b4563eb150e9e425dfce6 /net/ipv4/tcp_ipv4.c | |
| parent | e6e71054cd9f98c8ebb3a5f66f2776a9736afc87 (diff) | |
| download | lwn-6f73601efb35c7003f5c58c2bc6fd08f3652169c.tar.gz lwn-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 <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index ef998b008a57..0c4a64355603 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1461,6 +1461,7 @@ static int tcp_v4_conn_req_fastopen(struct sock *sk, skb_set_owner_r(skb, child); __skb_queue_tail(&child->sk_receive_queue, skb); tp->rcv_nxt = TCP_SKB_CB(skb)->end_seq; + tp->syn_data_acked = 1; } sk->sk_data_ready(sk, 0); bh_unlock_sock(child); |