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| author |   Jacob Keller <jacob.e.keller@intel.com> | 2018-10-05 09:33:56 -0700 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2018-11-07 09:47:01 -0800 |
| commit | a9e510589d7017ee4e82800d0a1d78a694772787 (patch) | |
| tree | d38e8d0791cfeb12f7a1e5927f6866a57ea8ef94 /drivers/net/ethernet/intel/i40e/i40e_txrx.c | |
| parent | ixgbevf: add support for software timestamps (diff) | |
| download | linux-dev-a9e510589d7017ee4e82800d0a1d78a694772787.tar.xz linux-dev-a9e510589d7017ee4e82800d0a1d78a694772787.zip | |
intel-ethernet: software timestamp skbs as late as possible
Many of the Intel Ethernet drivers call skb_tx_timestamp() earlier than
necessary. Move the calls to this function to the latest point possible,
just prior to notifying hardware of the new Tx packet when we bump the
tail register.
This affects i40e, iavf, igb, igc, and ixgbe.
The e100, e1000, e1000e, fm10k, and ice drivers already call the
skb_tx_timestamp() function just prior to indicating the Tx packet to
hardware, so they do not need to be changed.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_txrx.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_txrx.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index aef3c89ee79c..1384a5a006a4 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -3473,6 +3473,8 @@ static inline int i40e_tx_map(struct i40e_ring *tx_ring, struct sk_buff *skb, tx_desc->cmd_type_offset_bsz = build_ctob(td_cmd, td_offset, size, td_tag); + skb_tx_timestamp(skb); + /* Force memory writes to complete before letting h/w know there * are new descriptors to fetch. * @@ -3652,8 +3654,6 @@ static netdev_tx_t i40e_xmit_frame_ring(struct sk_buff *skb, if (tsyn) tx_flags |= I40E_TX_FLAGS_TSYN; - skb_tx_timestamp(skb); - /* always enable CRC insertion offload */ td_cmd |= I40E_TX_DESC_CMD_ICRC; |