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.du...@redhat.com>
---
net/core/timestamping.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
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);
--
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