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igb: never generate both software and hardware timestamps

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skb_tx_timestamp() does not report software time stamp
if SKBTX_IN_PROGRESS is set. According to timestamping.txt
software time stamps are a fallback and should not be
generated if hardware time stamp is provided.

Move call to skb_tx_timestamp() after setting
SKBTX_IN_PROGRESS.

Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Jakub Kicinski 2014-03-15 14:55:26 +00:00 committed by Jeff Kirsher
parent 201b54b8d2
commit afc835d1bd
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/intel/igb/igb_main.c
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@ -4980,8 +4980,6 @@ netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb,
first->bytecount = skb->len;
first->gso_segs = 1;
skb_tx_timestamp(skb);
if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
struct igb_adapter *adapter = netdev_priv(tx_ring->netdev);
@ -4996,6 +4994,8 @@ netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb,
}
}
skb_tx_timestamp(skb);
if (vlan_tx_tag_present(skb)) {
tx_flags |= IGB_TX_FLAGS_VLAN;
tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT);