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| author | Alexander Duyck <alexander.h.duyck@redhat.com> | 2015-07-09 11:02:52 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-07-09 14:17:15 -0700 |
| commit | 1007f59dce53a22cba164f854d7bdc171c85dc79 (patch) | |
| tree | 93a5a9f8c10fcc4e442d22f5d2d63daf899667e3 /net/core/timestamping.c | |
| parent | 2251ae46af72d013a6a537e7681e94b18b63e332 (diff) | |
| download | linux-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.c | 6 |
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); |