net: Clear skb->tstamp only on the forwarding path

This is done in preparation for the upcoming time based transmission
patchset. Now that skb->tstamp will be used to hold packet's txtime,
we must ensure that it is being cleared when traversing namespaces.
Also, doing that from skb_scrub_packet() before the early return would
break our feature when tunnels are used.

Signed-off-by: Jesus Sanchez-Palencia <jesus.sanchez-palencia@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 1357f36c8a5ef9f61543a309afec7d245cbaf663..c4e24ac274641e6c4a6435fad19f9671aa15b0a1 100644 (file)
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -4898,7 +4898,6 @@ EXPORT_SYMBOL(skb_try_coalesce);
  */
 void skb_scrub_packet(struct sk_buff *skb, bool xnet)
 {
-       skb->tstamp = 0;
        skb->pkt_type = PACKET_HOST;
        skb->skb_iif = 0;
        skb->ignore_df = 0;
@@ -4912,6 +4911,7 @@ void skb_scrub_packet(struct sk_buff *skb, bool xnet)
 
        ipvs_reset(skb);
        skb->mark = 0;
+       skb->tstamp = 0;
 }
 EXPORT_SYMBOL_GPL(skb_scrub_packet);