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tcp: simplify fast open cookie processing

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Consolidate various cookie checking and generation code to simplify
the fast open processing. The main goal is to reduce code duplication
in tcp_v4_conn_request() for IPv6 support.

Removes two experimental sysctl flags TFO_SERVER_ALWAYS and
TFO_SERVER_COOKIE_NOT_CHKD used primarily for developmental debugging
purposes.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Daniel Lee <longinus00@gmail.com>
Signed-off-by: Jerry Chu <hkchu@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yuchung Cheng 2014-05-11 20:22:10 -07:00 • committed by David S. Miller
parent 5b7ed0892f
commit 89278c9dc9
5 changed files with 33 additions and 64 deletions
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5
include/linux/tcp.h
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@ -366,11 +366,6 @@ static inline bool tcp_passive_fastopen(const struct sock *sk)
tcp_sk(sk)->fastopen_rsk != NULL);
}
static inline bool fastopen_cookie_present(struct tcp_fastopen_cookie *foc)
{
return foc->len != -1;
}
extern void tcp_sock_destruct(struct sock *sk);
static inline int fastopen_init_queue(struct sock *sk, int backlog)