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Message-Id: <1445057867-32257-5-git-send-email-ycheng@google.com>
Date: Fri, 16 Oct 2015 21:57:44 -0700
From: Yuchung Cheng <ycheng@...gle.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, Yuchung Cheng <ycheng@...gle.com>,
Neal Cardwell <ncardwell@...gle.com>,
Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next 4/7] tcp: add tcp_tsopt_ecr_before helper
a helper to prepare the main RACK patch
Signed-off-by: Yuchung Cheng <ycheng@...gle.com>
Signed-off-by: Neal Cardwell <ncardwell@...gle.com>
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
net/ipv4/tcp_input.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 5ad08d8..c304b5f 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -2250,14 +2250,19 @@ static inline void tcp_moderate_cwnd(struct tcp_sock *tp)
tp->snd_cwnd_stamp = tcp_time_stamp;
}
+static bool tcp_tsopt_ecr_before(const struct tcp_sock *tp, u32 when)
+{
+ return tp->rx_opt.saw_tstamp && tp->rx_opt.rcv_tsecr &&
+ before(tp->rx_opt.rcv_tsecr, when);
+}
+
/* Nothing was retransmitted or returned timestamp is less
* than timestamp of the first retransmission.
*/
static inline bool tcp_packet_delayed(const struct tcp_sock *tp)
{
return !tp->retrans_stamp ||
- (tp->rx_opt.saw_tstamp && tp->rx_opt.rcv_tsecr &&
- before(tp->rx_opt.rcv_tsecr, tp->retrans_stamp));
+ tcp_tsopt_ecr_before(tp, tp->retrans_stamp);
}
/* Undo procedures. */
--
2.6.0.rc2.230.g3dd15c0
--
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