Commit b1f0a0e9 authored by Florian Westphal's avatar Florian Westphal Committed by David S. Miller

net: add inet_sk_transparent() helper

Avoids cluttering tcp_v4_send_reset when followup patch extends
it to deal with timewait sockets.
Suggested-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarFlorian Westphal <fw@strlen.de>
Acked-by: default avatarEric Dumazet <edumazet@google.com>
Acked-by: default avatarHannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f4cee3af
...@@ -68,7 +68,7 @@ struct request_sock { ...@@ -68,7 +68,7 @@ struct request_sock {
u32 peer_secid; 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; return (struct request_sock *)sk;
} }
......
...@@ -1620,6 +1620,18 @@ static inline void tcp_highest_sack_combine(struct sock *sk, ...@@ -1620,6 +1620,18 @@ static inline void tcp_highest_sack_combine(struct sock *sk,
tcp_sk(sk)->highest_sack = new; 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 /* Determines whether this is a thin stream (which may suffer from
* increased latency). Used to trigger latency-reducing mechanisms. * increased latency). Used to trigger latency-reducing mechanisms.
*/ */
......
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