diff options
| author | Brett Creeley <brett.creeley@intel.com> | 2021-11-30 03:16:02 +0300 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2021-12-17 23:37:19 +0300 |
| commit | ccd219d2ea13a69881012569ea6ea33f46d684de (patch) | |
| tree | 498cfd62dd66ff3d023b9c08d49b2dd8d0c222ae /drivers/net/ethernet/intel/iavf/iavf_virtchnl.c | |
| parent | 48ccc43ecf1096e8e2cdf46844125c2dc9fa49f6 (diff) | |
| download | linux-ccd219d2ea13a69881012569ea6ea33f46d684de.tar.xz | |
iavf: Add support for VIRTCHNL_VF_OFFLOAD_VLAN_V2 hotpath
The new VIRTCHNL_VF_OFFLOAD_VLAN_V2 capability added support that allows
the PF to set the location of the Tx and Rx VLAN tag for insertion and
stripping offloads. In order to support this functionality a few changes
are needed.
1. Add a new method to cache the VLAN tag location based on negotiated
capabilities for the Tx and Rx ring flags. This needs to be called in
the initialization and reset paths.
2. Refactor the transmit hotpath to account for the new Tx ring flags.
When IAVF_TXR_FLAGS_VLAN_LOC_L2TAG2 is set, then the driver needs to
insert the VLAN tag in the L2TAG2 field of the transmit descriptor.
When the IAVF_TXRX_FLAGS_VLAN_LOC_L2TAG1 is set, then the driver needs
to use the l2tag1 field of the data descriptor (same behavior as
before).
3. Refactor the iavf_tx_prepare_vlan_flags() function to simplify
transmit hardware VLAN offload functionality by only depending on the
skb_vlan_tag_present() function. This can be done because the OS
won't request transmit offload for a VLAN unless the driver told the
OS it's supported and enabled.
4. Refactor the receive hotpath to account for the new Rx ring flags and
VLAN ethertypes. This requires checking the Rx ring flags and
descriptor status bits to determine the location of the VLAN tag.
Also, since only a single ethertype can be supported at a time, check
the enabled netdev features before specifying a VLAN ethertype in
__vlan_hwaccel_put_tag().
Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/iavf/iavf_virtchnl.c')
| -rw-r--r-- | drivers/net/ethernet/intel/iavf/iavf_virtchnl.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c b/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c index 783d829874bc..3e1b95011146 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c +++ b/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c @@ -1964,6 +1964,8 @@ void iavf_virtchnl_completion(struct iavf_adapter *adapter, dev_warn(&adapter->pdev->dev, "failed to acquire crit_lock in %s\n", __FUNCTION__); + iavf_set_queue_vlan_tag_loc(adapter); + } break; case VIRTCHNL_OP_ENABLE_QUEUES: |