diff options
| author | Wei Wang | 2017-01-23 19:59:20 +0100 |
|---|---|---|
| committer | David S. Miller | 2017-01-25 20:04:38 +0100 |
| commit | 065263f40f0972d5f1cd294bb0242bd5aa5f06b2 (patch) | |
| tree | c8d7915e4b9cb64a7e069b2842897af5b5c73f85 /net/ipv4/tcp_output.c | |
| parent | r8152: fix the wrong spelling (diff) | |
| download | kernel-qcow2-linux-065263f40f0972d5f1cd294bb0242bd5aa5f06b2.tar.gz kernel-qcow2-linux-065263f40f0972d5f1cd294bb0242bd5aa5f06b2.tar.xz kernel-qcow2-linux-065263f40f0972d5f1cd294bb0242bd5aa5f06b2.zip | |
net/tcp-fastopen: refactor cookie check logic
Refactor the cookie check logic in tcp_send_syn_data() into a function.
This function will be called else where in later changes.
Signed-off-by: Wei Wang <weiwan@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_output.c')
| -rw-r--r-- | net/ipv4/tcp_output.c | 16 |
1 files changed, 2 insertions, 14 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 9a1a1494b9dd..671c69535671 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -3267,23 +3267,11 @@ static int tcp_send_syn_data(struct sock *sk, struct sk_buff *syn) { struct tcp_sock *tp = tcp_sk(sk); struct tcp_fastopen_request *fo = tp->fastopen_req; - int syn_loss = 0, space, err = 0; - unsigned long last_syn_loss = 0; + int space, err = 0; struct sk_buff *syn_data; tp->rx_opt.mss_clamp = tp->advmss; /* If MSS is not cached */ - tcp_fastopen_cache_get(sk, &tp->rx_opt.mss_clamp, &fo->cookie, - &syn_loss, &last_syn_loss); - /* Recurring FO SYN losses: revert to regular handshake temporarily */ - if (syn_loss > 1 && - time_before(jiffies, last_syn_loss + (60*HZ << syn_loss))) { - fo->cookie.len = -1; - goto fallback; - } - - if (sysctl_tcp_fastopen & TFO_CLIENT_NO_COOKIE) - fo->cookie.len = -1; - else if (fo->cookie.len <= 0) + if (!tcp_fastopen_cookie_check(sk, &tp->rx_opt.mss_clamp, &fo->cookie)) goto fallback; /* MSS for SYN-data is based on cached MSS and bounded by PMTU and |