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igb: Add support for SW timestamping 

Enable SW timestamping for situations where the user may prefer it over HW
timestamping or there may not be HW timestamping.

Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Acked-by: Jacob Keller <Jacob.e.keller@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Matthew Vick 2012-12-13 07:20:33 +00:00 committed by Jeff Kirsher
parent e428893b7d
commit b66e2397cd
2 changed files with 11 additions and 0 deletions
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9
drivers/net/ethernet/intel/igb/igb_ethtool.c
View File

@ -2272,12 +2272,21 @@ static int igb_get_ts_info(struct net_device *dev,
struct igb_adapter *adapter = netdev_priv(dev);
switch (adapter->hw.mac.type) {
case e1000_82575:
info->so_timestamping =
SOF_TIMESTAMPING_TX_SOFTWARE |
SOF_TIMESTAMPING_RX_SOFTWARE |
SOF_TIMESTAMPING_SOFTWARE;
return 0;
case e1000_82576:
case e1000_82580:
case e1000_i350:
case e1000_i210:
case e1000_i211:
info->so_timestamping =
SOF_TIMESTAMPING_TX_SOFTWARE |
SOF_TIMESTAMPING_RX_SOFTWARE |
SOF_TIMESTAMPING_SOFTWARE |
SOF_TIMESTAMPING_TX_HARDWARE |
SOF_TIMESTAMPING_RX_HARDWARE |
SOF_TIMESTAMPING_RAW_HARDWARE;

2
drivers/net/ethernet/intel/igb/igb_main.c
View File

@ -4610,6 +4610,8 @@ 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) &&
!(adapter->ptp_tx_skb))) {
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;