ice: Add handler to configure SR-IOV

This patch implements parts of ice_sriov_configure and VF reset flow.

To create virtual functions (VFs), the user sets a value in num_vfs
through sysfs. This results in the kernel calling the handler for
.sriov_configure which is ice_sriov_configure.

VF setup first starts with a VF reset, followed by allocation of the VF
VSI using ice_vf_vsi_setup. Once the VF setup is complete a state bit
ICE_VF_STATE_INIT is set in the vf->states bitmap to indicate that
the VF is ready to go.

Also for VF reset to go into effect, it's necessary to issue a disable
queue command (ice_aqc_opc_dis_txqs). So this patch updates multiple
functions in the disable queue flow to take additional parameters that
distinguish if queues are being disabled due to VF reset.

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>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index acf3478a3f3b..4b26705a9ab5 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -1784,8 +1784,11 @@ int ice_vsi_stop_rx_rings(struct ice_vsi *vsi)
 /**
  * ice_vsi_stop_tx_rings - Disable Tx rings
  * @vsi: the VSI being configured
+ * @rst_src: reset source
+ * @rel_vmvf_num: Relative id of VF/VM
  */
-int ice_vsi_stop_tx_rings(struct ice_vsi *vsi)
+int ice_vsi_stop_tx_rings(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
+                          u16 rel_vmvf_num)
 {
         struct ice_pf *pf = vsi->back;
         struct ice_hw *hw = &pf->hw;
@@ -1837,7 +1840,7 @@ int ice_vsi_stop_tx_rings(struct ice_vsi *vsi)
                      GLINT_DYN_CTL_SWINT_TRIG_M | GLINT_DYN_CTL_INTENA_MSK_M);
         }
         status = ice_dis_vsi_txq(vsi->port_info, vsi->num_txq, q_ids, q_teids,
-                                 NULL);
+                                 rst_src, rel_vmvf_num, NULL);
         /* if the disable queue command was exercised during an active reset
          * flow, ICE_ERR_RESET_ONGOING is returned. This is not an error as
          * the reset operation disables queues at the hardware level anyway.