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authorChristoph Paasch <christoph.paasch@uclouvain.be>2013-03-17 08:23:34 +0000
committerDavid S. Miller <davem@davemloft.net>2013-03-17 14:35:13 -0400
commit1a2c6181c4a1922021b4d7df373bba612c3e5f04 (patch)
tree1346c9b1db83495a98fbcf95f8e521c67fc55cb9 /net/ipv6/syncookies.c
parent94d8f2b133c9ff97105adc1233d1a35e16e1e7a6 (diff)
downloadlinux-1a2c6181c4a1922021b4d7df373bba612c3e5f04.tar.bz2
tcp: Remove TCPCT
TCPCT uses option-number 253, reserved for experimental use and should not be used in production environments. Further, TCPCT does not fully implement RFC 6013. As a nice side-effect, removing TCPCT increases TCP's performance for very short flows: Doing an apache-benchmark with -c 100 -n 100000, sending HTTP-requests for files of 1KB size. before this patch: average (among 7 runs) of 20845.5 Requests/Second after: average (among 7 runs) of 21403.6 Requests/Second Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/syncookies.c')
-rw-r--r--net/ipv6/syncookies.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c
index 8a0848b60b35..d5dda20bd717 100644
--- a/net/ipv6/syncookies.c
+++ b/net/ipv6/syncookies.c
@@ -149,7 +149,6 @@ static inline int cookie_check(const struct sk_buff *skb, __u32 cookie)
struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb)
{
struct tcp_options_received tcp_opt;
- const u8 *hash_location;
struct inet_request_sock *ireq;
struct inet6_request_sock *ireq6;
struct tcp_request_sock *treq;
@@ -177,7 +176,7 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb)
/* check for timestamp cookie support */
memset(&tcp_opt, 0, sizeof(tcp_opt));
- tcp_parse_options(skb, &tcp_opt, &hash_location, 0, NULL);
+ tcp_parse_options(skb, &tcp_opt, 0, NULL);
if (!cookie_check_timestamp(&tcp_opt, sock_net(sk), &ecn_ok))
goto out;