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| author |   Preethi Banala <preethi.banala@intel.com> | 2017-03-10 12:22:00 -0800 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2017-03-29 02:15:06 -0700 |
| commit | b1cb07db6e2b3c982ec858b06d42d24c7e267fdc (patch) | |
| tree | a69df1e8ae1c4c4f2e62a15cb2927b3752a9dc11 /drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c | |
| parent | Merge branch 'netconf-delnetconf' (diff) | |
| download | wireguard-linux-b1cb07db6e2b3c982ec858b06d42d24c7e267fdc.tar.xz wireguard-linux-b1cb07db6e2b3c982ec858b06d42d24c7e267fdc.zip | |
i40evf: enforce descriptor write-back mechanism for VF
The current driver mode is to use a write-back mechanism for the head
register which indicates transmit completions. The VF driver needs to be
able to work on hardware that exclusively uses descriptor write-back, so
change the default driver mode of operation to descriptor write-back for
VF. In our analysis, performance wasn't significantly different with
either write-back method.
Change-ID: Ia92e4ec77c2df8dc4515c71d53746d57d77759af
Signed-off-by: Preethi Banala <preethi.banala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c b/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c index a2a7354426a3..4bc2488bf709 100644 --- a/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c +++ b/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c @@ -260,10 +260,6 @@ void i40evf_configure_queues(struct i40evf_adapter *adapter) vqpi->txq.queue_id = i; vqpi->txq.ring_len = adapter->tx_rings[i].count; vqpi->txq.dma_ring_addr = adapter->tx_rings[i].dma; - vqpi->txq.headwb_enabled = 1; - vqpi->txq.dma_headwb_addr = vqpi->txq.dma_ring_addr + - (vqpi->txq.ring_len * sizeof(struct i40e_tx_desc)); - vqpi->rxq.vsi_id = vqci->vsi_id; vqpi->rxq.queue_id = i; vqpi->rxq.ring_len = adapter->rx_rings[i].count; |