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

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

include/net/request_sock.h

+1 −1
Original line number Diff line number Diff line
@@ -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;

}

include/net/tcp.h

+12 −0
Original line number Diff line number Diff line
@@ -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.

 */