tcp: skb_mstamp_after helper
authorYuchung Cheng <ycheng@google.com>
Sat, 17 Oct 2015 04:57:45 +0000 (21:57 -0700)
committerDavid S. Miller <davem@davemloft.net>
Wed, 21 Oct 2015 14:00:46 +0000 (07:00 -0700)
a helper to prepare the first main RACK patch.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/linux/skbuff.h

index 4398411236f16c3f87691162909dc6197fb62b08..24f4dfd94c517b3b387682509180dee161e0912d 100644 (file)
@@ -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