ice: Support configuring the device to Double VLAN Mode

In order to support configuring the device in Double VLAN Mode (DVM),
the DDP and FW have to support DVM. If both support DVM, the PF that
downloads the package needs to update the default recipes, set the
VLAN mode, and update boost TCAM entries.

To support updating the default recipes in DVM, add support for
updating an existing switch recipe's lkup_idx and mask. This is done
by first calling the get recipe AQ (0x0292) with the desired recipe
ID. Then, if that is successful update one of the lookup indices
(lkup_idx) and its associated mask if the mask is valid otherwise
the already existing mask will be used.

The VLAN mode of the device has to be configured while the global
configuration lock is held while downloading the DDP, specifically after
the DDP has been downloaded. If supported, the device will default to
DVM.

Co-developed-by: Dan Nowlin <dan.nowlin@intel.com>
Signed-off-by: Dan Nowlin <dan.nowlin@intel.com>
Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

1 files changed, 75 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index 4213855f7961..4143728a1919 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -1097,6 +1097,64 @@ ice_aq_get_recipe(struct ice_hw *hw,
 }
 
 /**
+ * ice_update_recipe_lkup_idx - update a default recipe based on the lkup_idx
+ * @hw: pointer to the HW struct
+ * @params: parameters used to update the default recipe
+ *
+ * This function only supports updating default recipes and it only supports
+ * updating a single recipe based on the lkup_idx at a time.
+ *
+ * This is done as a read-modify-write operation. First, get the current recipe
+ * contents based on the recipe's ID. Then modify the field vector index and
+ * mask if it's valid at the lkup_idx. Finally, use the add recipe AQ to update
+ * the pre-existing recipe with the modifications.
+ */
+int
+ice_update_recipe_lkup_idx(struct ice_hw *hw,
+			   struct ice_update_recipe_lkup_idx_params *params)
+{
+	struct ice_aqc_recipe_data_elem *rcp_list;
+	u16 num_recps = ICE_MAX_NUM_RECIPES;
+	int status;
+
+	rcp_list = kcalloc(num_recps, sizeof(*rcp_list), GFP_KERNEL);
+	if (!rcp_list)
+		return -ENOMEM;
+
+	/* read current recipe list from firmware */
+	rcp_list->recipe_indx = params->rid;
+	status = ice_aq_get_recipe(hw, rcp_list, &num_recps, params->rid, NULL);
+	if (status) {
+		ice_debug(hw, ICE_DBG_SW, "Failed to get recipe %d, status %d\n",
+			  params->rid, status);
+		goto error_out;
+	}
+
+	/* only modify existing recipe's lkup_idx and mask if valid, while
+	 * leaving all other fields the same, then update the recipe firmware
+	 */
+	rcp_list->content.lkup_indx[params->lkup_idx] = params->fv_idx;
+	if (params->mask_valid)
+		rcp_list->content.mask[params->lkup_idx] =
+			cpu_to_le16(params->mask);
+
+	if (params->ignore_valid)
+		rcp_list->content.lkup_indx[params->lkup_idx] |=
+			ICE_AQ_RECIPE_LKUP_IGNORE;
+
+	status = ice_aq_add_recipe(hw, &rcp_list[0], 1, NULL);
+	if (status)
+		ice_debug(hw, ICE_DBG_SW, "Failed to update recipe %d lkup_idx %d fv_idx %d mask %d mask_valid %s, status %d\n",
+			  params->rid, params->lkup_idx, params->fv_idx,
+			  params->mask, params->mask_valid ? "true" : "false",
+			  status);
+
+error_out:
+	kfree(rcp_list);
+	return status;
+}
+
+/**
  * ice_aq_map_recipe_to_profile - Map recipe to packet profile
  * @hw: pointer to the HW struct
  * @profile_id: package profile ID to associate the recipe with
@@ -3873,6 +3931,23 @@ ice_find_recp(struct ice_hw *hw, struct ice_prot_lkup_ext *lkup_exts,
 }
 
 /**
+ * ice_change_proto_id_to_dvm - change proto id in prot_id_tbl
+ *
+ * As protocol id for outer vlan is different in dvm and svm, if dvm is
+ * supported protocol array record for outer vlan has to be modified to
+ * reflect the value proper for DVM.
+ */
+void ice_change_proto_id_to_dvm(void)
+{
+	u8 i;
+
+	for (i = 0; i < ARRAY_SIZE(ice_prot_id_tbl); i++)
+		if (ice_prot_id_tbl[i].type == ICE_VLAN_OFOS &&
+		    ice_prot_id_tbl[i].protocol_id != ICE_VLAN_OF_HW)
+			ice_prot_id_tbl[i].protocol_id = ICE_VLAN_OF_HW;
+}
+
+/**
  * ice_prot_type_to_id - get protocol ID from protocol type
  * @type: protocol type
  * @id: pointer to variable that will receive the ID