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authorAlexander Duyck <alexander.h.duyck@redhat.com>2015-07-09 11:02:52 -0700
committerDavid S. Miller <davem@davemloft.net>2015-07-09 14:17:15 -0700
commit1007f59dce53a22cba164f854d7bdc171c85dc79 (patch)
tree93a5a9f8c10fcc4e442d22f5d2d63daf899667e3 /net/core/timestamping.c
parent2251ae46af72d013a6a537e7681e94b18b63e332 (diff)
downloadlinux-1007f59dce53a22cba164f854d7bdc171c85dc79.tar.bz2
net: skb_defer_rx_timestamp should check for phydev before setting up classify
This change makes it so that the call skb_defer_rx_timestamp will first check for a phydev before going in and manipulating the skb->data and skb->len values. By doing this we can avoid unnecessary work on network devices that don't support phydev. As a result we reduce the total instruction count needed to process this on most devices. Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/timestamping.c')
-rw-r--r--net/core/timestamping.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/net/core/timestamping.c b/net/core/timestamping.c
index 43d3dd62fcc8..42689d5c468c 100644
--- a/net/core/timestamping.c
+++ b/net/core/timestamping.c
@@ -60,11 +60,15 @@ bool skb_defer_rx_timestamp(struct sk_buff *skb)
struct phy_device *phydev;
unsigned int type;
+ if (!skb->dev || !skb->dev->phydev || !skb->dev->phydev->drv)
+ return false;
+
if (skb_headroom(skb) < ETH_HLEN)
return false;
+
__skb_push(skb, ETH_HLEN);
- type = classify(skb);
+ type = ptp_classify_raw(skb);
__skb_pull(skb, ETH_HLEN);