tcp: new helper tcp_rack_skb_timeout

Create and export a new helper tcp_rack_skb_timeout and move tcp_is_rack
to prepare the final RTO change.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Soheil Hassas Yeganeh <soheil@google.com>
Reviewed-by: Priyaranjan Jha <priyarjha@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 5 deletions

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 1ccc97b368c7..ba8a8e3464aa 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -1917,6 +1917,11 @@ static inline void tcp_init_undo(struct tcp_sock *tp)
         tp->undo_retrans = tp->retrans_out ? : -1;
 }
 
+static bool tcp_is_rack(const struct sock *sk)
+{
+        return sock_net(sk)->ipv4.sysctl_tcp_recovery & TCP_RACK_LOSS_DETECTION;
+}
+
 /* If we detect SACK reneging, forget all SACK information
  * and reset tags completely, otherwise preserve SACKs. If receiver
  * dropped its ofo queue, we will know this due to reneging detection.
@@ -2031,11 +2036,6 @@ static inline int tcp_dupack_heuristics(const struct tcp_sock *tp)
         return tp->sacked_out + 1;
 }
 
-static bool tcp_is_rack(const struct sock *sk)
-{
-        return sock_net(sk)->ipv4.sysctl_tcp_recovery & TCP_RACK_LOSS_DETECTION;
-}
-
 /* Linux NewReno/SACK/ECN state machine.
  * --------------------------------------
  *