diff options
| author | Md Fahad Iqbal Polash <md.fahad.iqbal.polash@intel.com> | 2018-09-19 17:23:17 -0700 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2018-10-02 07:17:18 -0700 |
| commit | 492af0ab4f57136d19f0fa3a9c636f12ae70853c (patch) | |
| tree | cc0a049680f4f3feedc0b10bd4855e8d656b031c | |
| parent | eb0208ec42d319bc09fead0e1afe2bc0c28aeca0 (diff) | |
ice: Implement ethtool hook for RSS switch
This patch implements ethtool hook for enabling/disabling
RSS. While disabling RSS, the LUT should be cleared. And
the LUT should be reconfigured while enabling RSS.
Signed-off-by: Md Fahad Iqbal Polash <md.fahad.iqbal.polash@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_lib.c | 32 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_lib.h | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_main.c | 6 |
3 files changed, 40 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c index 8f7ee77cb70b..98e8b7096e47 100644 --- a/drivers/net/ethernet/intel/ice/ice_lib.c +++ b/drivers/net/ethernet/intel/ice/ice_lib.c @@ -1223,6 +1223,38 @@ static void ice_vsi_map_rings_to_vectors(struct ice_vsi *vsi) } /** + * ice_vsi_manage_rss_lut - disable/enable RSS + * @vsi: the VSI being changed + * @ena: boolean value indicating if this is an enable or disable request + * + * In the event of disable request for RSS, this function will zero out RSS + * LUT, while in the event of enable request for RSS, it will reconfigure RSS + * LUT. + */ +int ice_vsi_manage_rss_lut(struct ice_vsi *vsi, bool ena) +{ + int err = 0; + u8 *lut; + + lut = devm_kzalloc(&vsi->back->pdev->dev, vsi->rss_table_size, + GFP_KERNEL); + if (!lut) + return -ENOMEM; + + if (ena) { + if (vsi->rss_lut_user) + memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size); + else + ice_fill_rss_lut(lut, vsi->rss_table_size, + vsi->rss_size); + } + + err = ice_set_rss(vsi, NULL, lut, vsi->rss_table_size); + devm_kfree(&vsi->back->pdev->dev, lut); + return err; +} + +/** * ice_vsi_cfg_rss_lut_key - Configure RSS params for a VSI * @vsi: VSI to be configured */ diff --git a/drivers/net/ethernet/intel/ice/ice_lib.h b/drivers/net/ethernet/intel/ice/ice_lib.h index 4265464ee3d3..2617afe01c82 100644 --- a/drivers/net/ethernet/intel/ice/ice_lib.h +++ b/drivers/net/ethernet/intel/ice/ice_lib.h @@ -70,5 +70,7 @@ void ice_vsi_free_tx_rings(struct ice_vsi *vsi); int ice_vsi_cfg_tc(struct ice_vsi *vsi, u8 ena_tc); +int ice_vsi_manage_rss_lut(struct ice_vsi *vsi, bool ena); + irqreturn_t ice_msix_clean_rings(int __always_unused irq, void *data); #endif /* !_ICE_LIB_H_ */ diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c index d9f30d15ad65..bb76a0bf2fd1 100644 --- a/drivers/net/ethernet/intel/ice/ice_main.c +++ b/drivers/net/ethernet/intel/ice/ice_main.c @@ -2412,6 +2412,12 @@ static int ice_set_features(struct net_device *netdev, struct ice_vsi *vsi = np->vsi; int ret = 0; + if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH)) + ret = ice_vsi_manage_rss_lut(vsi, true); + else if (!(features & NETIF_F_RXHASH) && + netdev->features & NETIF_F_RXHASH) + ret = ice_vsi_manage_rss_lut(vsi, false); + if ((features & NETIF_F_HW_VLAN_CTAG_RX) && !(netdev->features & NETIF_F_HW_VLAN_CTAG_RX)) ret = ice_vsi_manage_vlan_stripping(vsi, true); |