Avoids cluttering tcp_v4_send_reset when followup patch extends
it to deal with timewait sockets.
Suggested-by: Eric Dumazet <eduma...@google.com>
Signed-off-by: Florian Westphal <f...@strlen.de>
---
include/net/request_sock.h | 2 +-
include/net/tcp.h | 12 ++++++++++++
2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/include/net/request_sock.h b/include/net/request_sock.h
index a0dde04..f49759d 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 3077735b..f33fecf 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.
*/
--
2.4.10
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