diff options
| author | Florian Westphal <fw@strlen.de> | 2015-12-21 21:29:24 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-12-22 17:03:05 -0500 |
| commit | b1f0a0e99c58fbd7ea053ca36ba623718272b618 (patch) | |
| tree | 17c6d02cc97346088f6c5675234b69a485335a36 | |
| parent | f4cee3af0dedf3270e6d615d772e3fbfa3200769 (diff) | |
| download | linux-b1f0a0e99c58fbd7ea053ca36ba623718272b618.tar.bz2 | |
net: add inet_sk_transparent() helper
Avoids cluttering tcp_v4_send_reset when followup patch extends
it to deal with timewait sockets.
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/request_sock.h | 2 | ||||
| -rw-r--r-- | include/net/tcp.h | 12 |
2 files changed, 13 insertions, 1 deletions
diff --git a/include/net/request_sock.h b/include/net/request_sock.h index a0dde04eb178..f49759decb28 100644 --- a/include/net/request_sock.h +++ b/include/net/request_sock.h @@ -68,7 +68,7 @@ struct request_sock { u32 peer_secid; }; -static inline struct request_sock *inet_reqsk(struct sock *sk) +static inline struct request_sock *inet_reqsk(const struct sock *sk) { return (struct request_sock *)sk; } diff --git a/include/net/tcp.h b/include/net/tcp.h index 3077735b348d..f33fecf4e282 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -1620,6 +1620,18 @@ static inline void tcp_highest_sack_combine(struct sock *sk, tcp_sk(sk)->highest_sack = new; } +/* This helper checks if socket has IP_TRANSPARENT set */ +static inline bool inet_sk_transparent(const struct sock *sk) +{ + switch (sk->sk_state) { + case TCP_TIME_WAIT: + return inet_twsk(sk)->tw_transparent; + case TCP_NEW_SYN_RECV: + return inet_rsk(inet_reqsk(sk))->no_srccheck; + } + return inet_sk(sk)->transparent; +} + /* Determines whether this is a thin stream (which may suffer from * increased latency). Used to trigger latency-reducing mechanisms. */ |