diff options
| author | Benita Bose <benita.bose@intel.com> | 2021-03-02 10:12:02 -0800 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2021-03-31 14:21:27 -0700 |
| commit | 634da4c118434cf8a0c5eabce9eb58502ef1521c (patch) | |
| tree | 980eb1ba8964658c65b08e3008d13156f4b4f2d0 /drivers/net/ethernet/intel/ice/ice_base.c | |
| parent | 28110056f2d07a576ca045a38f80de051b13582a (diff) | |
| download | linux-634da4c118434cf8a0c5eabce9eb58502ef1521c.tar.gz | |
ice: Add Support for XPS
Enable and configure XPS. The driver code implemented sets up the Transmit
Packet Steering Map, which in turn will be used by the kernel in queue
selection during Tx.
Signed-off-by: Benita Bose <benita.bose@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_base.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_base.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_base.c b/drivers/net/ethernet/intel/ice/ice_base.c index 1148d768f8ed..be26775a7dfe 100644 --- a/drivers/net/ethernet/intel/ice/ice_base.c +++ b/drivers/net/ethernet/intel/ice/ice_base.c @@ -215,6 +215,26 @@ static u16 ice_calc_q_handle(struct ice_vsi *vsi, struct ice_ring *ring, u8 tc) } /** + * ice_cfg_xps_tx_ring - Configure XPS for a Tx ring + * @ring: The Tx ring to configure + * + * This enables/disables XPS for a given Tx descriptor ring + * based on the TCs enabled for the VSI that ring belongs to. + */ +static void ice_cfg_xps_tx_ring(struct ice_ring *ring) +{ + if (!ring->q_vector || !ring->netdev) + return; + + /* We only initialize XPS once, so as not to overwrite user settings */ + if (test_and_set_bit(ICE_TX_XPS_INIT_DONE, ring->xps_state)) + return; + + netif_set_xps_queue(ring->netdev, &ring->q_vector->affinity_mask, + ring->q_index); +} + +/** * ice_setup_tx_ctx - setup a struct ice_tlan_ctx instance * @ring: The Tx ring to configure * @tlan_ctx: Pointer to the Tx LAN queue context structure to be initialized @@ -664,6 +684,9 @@ ice_vsi_cfg_txq(struct ice_vsi *vsi, struct ice_ring *ring, u16 pf_q; u8 tc; + /* Configure XPS */ + ice_cfg_xps_tx_ring(ring); + pf_q = ring->reg_idx; ice_setup_tx_ctx(ring, &tlan_ctx, pf_q); /* copy context contents into the qg_buf */ |