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| author | Florian Westphal <fw@strlen.de> | 2010-06-21 11:48:45 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-06-26 22:00:03 -0700 |
| commit | 172d69e63c7f1e8300d0e1c1bbd8eb0f630faa15 (patch) | |
| tree | c71118ddc86186e235a920b9529c457db5e9aae5 /net/ipv4/tcp_ipv4.c | |
| parent | 734f614bc1e7c6bf075d201f6bd9a555b8b4a984 (diff) | |
| download | blackbird-op-linux-172d69e63c7f1e8300d0e1c1bbd8eb0f630faa15.tar.gz blackbird-op-linux-172d69e63c7f1e8300d0e1c1bbd8eb0f630faa15.zip | |
syncookies: add support for ECN
Allows use of ECN when syncookies are in effect by encoding ecn_ok
into the syn-ack tcp timestamp.
While at it, remove a uneeded #ifdef CONFIG_SYN_COOKIES.
With CONFIG_SYN_COOKIES=nm want_cookie is ifdef'd to 0 and gcc
removes the "if (0)".
Signed-off-by: Florian Westphal <fw@strlen.de>
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 | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 2e41e6f92968..8fa32f5ae2ce 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1328,14 +1328,12 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb) if (security_inet_conn_request(sk, skb, req)) goto drop_and_free; - if (!want_cookie) + if (!want_cookie || tmp_opt.tstamp_ok) TCP_ECN_create_request(req, tcp_hdr(skb)); if (want_cookie) { -#ifdef CONFIG_SYN_COOKIES - req->cookie_ts = tmp_opt.tstamp_ok; -#endif isn = cookie_v4_init_sequence(sk, skb, &req->mss); + req->cookie_ts = tmp_opt.tstamp_ok; } else if (!isn) { struct inet_peer *peer = NULL; |
