ice: Don't modify stripping for add/del VLANs on VF

Currently when adding/deleting vlans in ice_vc_process_vlan_msg()
we are calling ice_vsi_manage_vlan_stripping() to enable/disable
when adding and deleting a VLAN respectively. This is wrong
because adding/deleting VLANs has nothing to do with configuring
VLAN stripping. VLAN stripping is configured through the
following VIRTCHNL operations:
	VIRTCHNL_OP_ENABLE_VLAN_STRIPPING
	VIRTCHNL_OP_DISABLE_VLAN_STRIPPING

Unfortunately we can't just remove this because then stripping
will never be configured on VF initialization. Fix this by
adding a new function that initializes (disables/enables) VLAN
stripping for the VF based on the device supported capabilities.
This allows us to remove the call to
ice_vsi_manage_vlan_stripping() in ice_vc_process_vlan_msg().

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
index 3cb394b..fd41923 100644 (file)
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
@@ -2735,14 +2735,6 @@ static int ice_vc_process_vlan_msg(struct ice_vf *vf, u8 *msg, bool add_v)
                goto error_param;
        }
 
-       if (ice_vsi_manage_vlan_stripping(vsi, add_v)) {
-               dev_err(&pf->pdev->dev,
-                       "%sable VLAN stripping failed for VSI %i\n",
-                        add_v ? "en" : "dis", vsi->vsi_num);
-               v_ret = VIRTCHNL_STATUS_ERR_PARAM;
-               goto error_param;
-       }
-
        if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states) ||
            test_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states))
                vlan_promisc = true;
@@ -2934,6 +2926,33 @@ error_param:
 }
 
 /**
+ * ice_vf_init_vlan_stripping - enable/disable VLAN stripping on initialization
+ * @vf: VF to enable/disable VLAN stripping for on initialization
+ *
+ * If the VIRTCHNL_VF_OFFLOAD_VLAN flag is set enable VLAN stripping, else if
+ * the flag is cleared then we want to disable stripping. For example, the flag
+ * will be cleared when port VLANs are configured by the administrator before
+ * passing the VF to the guest or if the AVF driver doesn't support VLAN
+ * offloads.
+ */
+static int ice_vf_init_vlan_stripping(struct ice_vf *vf)
+{
+       struct ice_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx];
+
+       if (!vsi)
+               return -EINVAL;
+
+       /* don't modify stripping if port VLAN is configured */
+       if (vsi->info.pvid)
+               return 0;
+
+       if (ice_vf_vlan_offload_ena(vf->driver_caps))
+               return ice_vsi_manage_vlan_stripping(vsi, true);
+       else
+               return ice_vsi_manage_vlan_stripping(vsi, false);
+}
+
+/**
  * ice_vc_process_vf_msg - Process request from VF
  * @pf: pointer to the PF structure
  * @event: pointer to the AQ event
@@ -2987,6 +3006,10 @@ error_handler:
                break;
        case VIRTCHNL_OP_GET_VF_RESOURCES:
                err = ice_vc_get_vf_res_msg(vf, msg);
+               if (ice_vf_init_vlan_stripping(vf))
+                       dev_err(&pf->pdev->dev,
+                               "Failed to initialize VLAN stripping for VF %d\n",
+                               vf->vf_id);
                ice_vc_notify_vf_link_state(vf);
                break;
        case VIRTCHNL_OP_RESET_VF: