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Date:	Fri, 16 Oct 2015 21:57:45 -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 5/7] tcp: skb_mstamp_after helper

a helper to prepare the first 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>
---
 include/linux/skbuff.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 4398411..24f4dfd 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -463,6 +463,15 @@ static inline u32 skb_mstamp_us_delta(const struct skb_mstamp *t1,
 	return delta_us;
 }
 
+static inline bool skb_mstamp_after(const struct skb_mstamp *t1,
+				    const struct skb_mstamp *t0)
+{
+	s32 diff = t1->stamp_jiffies - t0->stamp_jiffies;
+
+	if (!diff)
+		diff = t1->stamp_us - t0->stamp_us;
+	return diff > 0;
+}
 
 /** 
  *	struct sk_buff - socket buffer
-- 
2.6.0.rc2.230.g3dd15c0

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