ice: implement low level recipes functions

Add code to manage recipes and profiles on admin queue layer.

Allow the driver to add a new recipe and update an existing one. Get a
recipe and get a recipe to profile association is mostly used in update
existing recipes code.

Only default recipes can be updated. An update is done by reading recipes
from HW, changing their params and calling add recipe command.

Support following admin queue commands:
- ice_aqc_opc_add_recipe (0x0290) - create a recipe with protocol
header information and other details that determine how this recipe
filter works
- ice_aqc_opc_recipe_to_profile (0x0291) - associate a switch recipe
to a profile
- ice_aqc_opc_get_recipe (0x0292) - get details of an existing recipe
- ice_aqc_opc_get_recipe_to_profile (0x0293) - get a recipe associated
with profile ID

Define ICE_AQC_RES_TYPE_RECIPE resource type to hold a switch
recipe. It is needed when a new switch recipe needs to be created.

Co-developed-by: Dan Nowlin <dan.nowlin@intel.com>
Signed-off-by: Dan Nowlin <dan.nowlin@intel.com>
Signed-off-by: Grishma Kotecha  <grishma.kotecha@intel.com>
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

1 files changed, 155 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index 1e86a6dba454..becc4ff6b7c6 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -543,6 +543,161 @@ ice_aq_sw_rules(struct ice_hw *hw, void *rule_list, u16 rule_list_sz,
 	return status;
 }
 
+/**
+ * ice_aq_add_recipe - add switch recipe
+ * @hw: pointer to the HW struct
+ * @s_recipe_list: pointer to switch rule population list
+ * @num_recipes: number of switch recipes in the list
+ * @cd: pointer to command details structure or NULL
+ *
+ * Add(0x0290)
+ */
+static enum ice_status __maybe_unused
+ice_aq_add_recipe(struct ice_hw *hw,
+		  struct ice_aqc_recipe_data_elem *s_recipe_list,
+		  u16 num_recipes, struct ice_sq_cd *cd)
+{
+	struct ice_aqc_add_get_recipe *cmd;
+	struct ice_aq_desc desc;
+	u16 buf_size;
+
+	cmd = &desc.params.add_get_recipe;
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_add_recipe);
+
+	cmd->num_sub_recipes = cpu_to_le16(num_recipes);
+	desc.flags |= cpu_to_le16(ICE_AQ_FLAG_RD);
+
+	buf_size = num_recipes * sizeof(*s_recipe_list);
+
+	return ice_aq_send_cmd(hw, &desc, s_recipe_list, buf_size, cd);
+}
+
+/**
+ * ice_aq_get_recipe - get switch recipe
+ * @hw: pointer to the HW struct
+ * @s_recipe_list: pointer to switch rule population list
+ * @num_recipes: pointer to the number of recipes (input and output)
+ * @recipe_root: root recipe number of recipe(s) to retrieve
+ * @cd: pointer to command details structure or NULL
+ *
+ * Get(0x0292)
+ *
+ * On input, *num_recipes should equal the number of entries in s_recipe_list.
+ * On output, *num_recipes will equal the number of entries returned in
+ * s_recipe_list.
+ *
+ * The caller must supply enough space in s_recipe_list to hold all possible
+ * recipes and *num_recipes must equal ICE_MAX_NUM_RECIPES.
+ */
+static enum ice_status __maybe_unused
+ice_aq_get_recipe(struct ice_hw *hw,
+		  struct ice_aqc_recipe_data_elem *s_recipe_list,
+		  u16 *num_recipes, u16 recipe_root, struct ice_sq_cd *cd)
+{
+	struct ice_aqc_add_get_recipe *cmd;
+	struct ice_aq_desc desc;
+	enum ice_status status;
+	u16 buf_size;
+
+	if (*num_recipes != ICE_MAX_NUM_RECIPES)
+		return ICE_ERR_PARAM;
+
+	cmd = &desc.params.add_get_recipe;
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_recipe);
+
+	cmd->return_index = cpu_to_le16(recipe_root);
+	cmd->num_sub_recipes = 0;
+
+	buf_size = *num_recipes * sizeof(*s_recipe_list);
+
+	status = ice_aq_send_cmd(hw, &desc, s_recipe_list, buf_size, cd);
+	*num_recipes = le16_to_cpu(cmd->num_sub_recipes);
+
+	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
+ * @r_bitmap: Recipe bitmap filled in and need to be returned as response
+ * @cd: pointer to command details structure or NULL
+ * Recipe to profile association (0x0291)
+ */
+static enum ice_status __maybe_unused
+ice_aq_map_recipe_to_profile(struct ice_hw *hw, u32 profile_id, u8 *r_bitmap,
+			     struct ice_sq_cd *cd)
+{
+	struct ice_aqc_recipe_to_profile *cmd;
+	struct ice_aq_desc desc;
+
+	cmd = &desc.params.recipe_to_profile;
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_recipe_to_profile);
+	cmd->profile_id = cpu_to_le16(profile_id);
+	/* Set the recipe ID bit in the bitmask to let the device know which
+	 * profile we are associating the recipe to
+	 */
+	memcpy(cmd->recipe_assoc, r_bitmap, sizeof(cmd->recipe_assoc));
+
+	return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
+}
+
+/**
+ * ice_aq_get_recipe_to_profile - Map recipe to packet profile
+ * @hw: pointer to the HW struct
+ * @profile_id: package profile ID to associate the recipe with
+ * @r_bitmap: Recipe bitmap filled in and need to be returned as response
+ * @cd: pointer to command details structure or NULL
+ * Associate profile ID with given recipe (0x0293)
+ */
+static enum ice_status __maybe_unused
+ice_aq_get_recipe_to_profile(struct ice_hw *hw, u32 profile_id, u8 *r_bitmap,
+			     struct ice_sq_cd *cd)
+{
+	struct ice_aqc_recipe_to_profile *cmd;
+	struct ice_aq_desc desc;
+	enum ice_status status;
+
+	cmd = &desc.params.recipe_to_profile;
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_recipe_to_profile);
+	cmd->profile_id = cpu_to_le16(profile_id);
+
+	status = ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
+	if (!status)
+		memcpy(r_bitmap, cmd->recipe_assoc, sizeof(cmd->recipe_assoc));
+
+	return status;
+}
+
+/**
+ * ice_alloc_recipe - add recipe resource
+ * @hw: pointer to the hardware structure
+ * @rid: recipe ID returned as response to AQ call
+ */
+static enum ice_status __maybe_unused ice_alloc_recipe(struct ice_hw *hw, u16 *rid)
+{
+	struct ice_aqc_alloc_free_res_elem *sw_buf;
+	enum ice_status status;
+	u16 buf_len;
+
+	buf_len = struct_size(sw_buf, elem, 1);
+	sw_buf = kzalloc(buf_len, GFP_KERNEL);
+	if (!sw_buf)
+		return ICE_ERR_NO_MEMORY;
+
+	sw_buf->num_elems = cpu_to_le16(1);
+	sw_buf->res_type = cpu_to_le16((ICE_AQC_RES_TYPE_RECIPE <<
+					ICE_AQC_RES_TYPE_S) |
+					ICE_AQC_RES_TYPE_FLAG_SHARED);
+	status = ice_aq_alloc_free_res(hw, 1, sw_buf, buf_len,
+				       ice_aqc_opc_alloc_res, NULL);
+	if (!status)
+		*rid = le16_to_cpu(sw_buf->elem[0].e.sw_resp);
+	kfree(sw_buf);
+
+	return status;
+}
+
 /* ice_init_port_info - Initialize port_info with switch configuration data
  * @pi: pointer to port_info
  * @vsi_port_num: VSI number or port number