net/mlx5: HWS, added API and enabled HWS support

Enabling HWS support in the mlx5 driver:
 - added HWS API header
 - added HWS files in the mlx5 driver makefile
 - added kconfig flag that enables HWS compilation
Reviewed-by: Erez Shitrit <erezsh@nvidia.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

Documentation/networking/device_drivers/ethernet/mellanox/mlx5/kconfig.rst

@@ -130,6 +130,9 @@ Enabling the driver and kconfig options
 
 |    Build support for software-managed steering in the NIC.
 
+**CONFIG_MLX5_HW_STEERING=(y/n)**
+
+|    Build support for hardware-managed steering in the NIC.
 
 **CONFIG_MLX5_TC_CT=(y/n)**
 

drivers/net/ethernet/mellanox/mlx5/core/Kconfig

@@ -172,6 +172,16 @@ config MLX5_SW_STEERING
 	help
 	Build support for software-managed steering in the NIC.
 
+config MLX5_HW_STEERING
+	bool "Mellanox Technologies hardware-managed steering"
+	depends on MLX5_CORE_EN && MLX5_ESWITCH
+	default y
+	help
+	Build support for Hardware-Managed Flow Steering (HMFS) in the NIC.
+	HMFS is a new approach to managing steering rules where STEs are
+	written to ICM by HW (as opposed to SW in software-managed steering),
+	which allows higher rate of rule insertion.
+
 config MLX5_SF
 	bool "Mellanox Technologies subfunction device support using auxiliary device"
 	depends on MLX5_CORE && MLX5_CORE_EN

drivers/net/ethernet/mellanox/mlx5/core/Makefile

@@ -119,6 +119,27 @@ mlx5_core-$(CONFIG_MLX5_SW_STEERING) += steering/dr_domain.o steering/dr_table.o
 					steering/dr_action.o steering/fs_dr.o \
 					steering/dr_definer.o steering/dr_ptrn.o \
 					steering/dr_arg.o steering/dr_dbg.o lib/smfs.o
+
+#
+# HW Steering
+#
+mlx5_core-$(CONFIG_MLX5_HW_STEERING) += steering/hws/mlx5hws_cmd.o \
+					steering/hws/mlx5hws_context.o \
+					steering/hws/mlx5hws_pat_arg.o \
+					steering/hws/mlx5hws_buddy.o \
+					steering/hws/mlx5hws_pool.o \
+					steering/hws/mlx5hws_table.o \
+					steering/hws/mlx5hws_action.o \
+					steering/hws/mlx5hws_rule.o \
+					steering/hws/mlx5hws_matcher.o \
+					steering/hws/mlx5hws_send.o \
+					steering/hws/mlx5hws_definer.o \
+					steering/hws/mlx5hws_bwc.o \
+					steering/hws/mlx5hws_debug.o \
+					steering/hws/mlx5hws_vport.o \
+					steering/hws/mlx5hws_bwc_complex.o
+
+
 #
 # SF device
 #

drivers/net/ethernet/mellanox/mlx5/core/steering/hws/Makefile

+# SPDX-License-Identifier: GPL-2.0-only
+subdir-ccflags-y += -I$(src)/..

drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws.h

+/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
+/* Copyright (c) 2024 NVIDIA Corporation & Affiliates */
+
+#ifndef MLX5HWS_H_
+#define MLX5HWS_H_
+
+struct mlx5hws_context;
+struct mlx5hws_table;
+struct mlx5hws_matcher;
+struct mlx5hws_rule;
+
+enum mlx5hws_table_type {
+	MLX5HWS_TABLE_TYPE_FDB,
+	MLX5HWS_TABLE_TYPE_MAX,
+};
+
+enum mlx5hws_matcher_resource_mode {
+	/* Allocate resources based on number of rules with minimal failure probability */
+	MLX5HWS_MATCHER_RESOURCE_MODE_RULE,
+	/* Allocate fixed size hash table based on given column and rows */
+	MLX5HWS_MATCHER_RESOURCE_MODE_HTABLE,
+};
+
+enum mlx5hws_action_type {
+	MLX5HWS_ACTION_TYP_LAST,
+	MLX5HWS_ACTION_TYP_REFORMAT_TNL_L2_TO_L2,
+	MLX5HWS_ACTION_TYP_REFORMAT_L2_TO_TNL_L2,
+	MLX5HWS_ACTION_TYP_REFORMAT_TNL_L3_TO_L2,
+	MLX5HWS_ACTION_TYP_REFORMAT_L2_TO_TNL_L3,
+	MLX5HWS_ACTION_TYP_DROP,
+	MLX5HWS_ACTION_TYP_MISS,
+	MLX5HWS_ACTION_TYP_TBL,
+	MLX5HWS_ACTION_TYP_CTR,
+	MLX5HWS_ACTION_TYP_TAG,
+	MLX5HWS_ACTION_TYP_MODIFY_HDR,
+	MLX5HWS_ACTION_TYP_VPORT,
+	MLX5HWS_ACTION_TYP_POP_VLAN,
+	MLX5HWS_ACTION_TYP_PUSH_VLAN,
+	MLX5HWS_ACTION_TYP_ASO_METER,
+	MLX5HWS_ACTION_TYP_INSERT_HEADER,
+	MLX5HWS_ACTION_TYP_REMOVE_HEADER,
+	MLX5HWS_ACTION_TYP_RANGE,
+	MLX5HWS_ACTION_TYP_SAMPLER,
+	MLX5HWS_ACTION_TYP_DEST_ARRAY,
+	MLX5HWS_ACTION_TYP_MAX,
+};
+
+enum mlx5hws_action_flags {
+	MLX5HWS_ACTION_FLAG_HWS_FDB = 1 << 0,
+	/* Shared action can be used over a few threads, since the
+	 * data is written only once at the creation of the action.
+	 */
+	MLX5HWS_ACTION_FLAG_SHARED = 1 << 1,
+};
+
+enum mlx5hws_action_aso_meter_color {
+	MLX5HWS_ACTION_ASO_METER_COLOR_RED = 0x0,
+	MLX5HWS_ACTION_ASO_METER_COLOR_YELLOW = 0x1,
+	MLX5HWS_ACTION_ASO_METER_COLOR_GREEN = 0x2,
+	MLX5HWS_ACTION_ASO_METER_COLOR_UNDEFINED = 0x3,
+};
+
+enum mlx5hws_send_queue_actions {
+	/* Start executing all pending queued rules */
+	MLX5HWS_SEND_QUEUE_ACTION_DRAIN_ASYNC = 1 << 0,
+	/* Start executing all pending queued rules wait till completion */
+	MLX5HWS_SEND_QUEUE_ACTION_DRAIN_SYNC = 1 << 1,
+};
+
+struct mlx5hws_context_attr {
+	u16 queues;
+	u16 queue_size;
+	bool bwc; /* add support for backward compatible API*/
+};
+
+struct mlx5hws_table_attr {
+	enum mlx5hws_table_type type;
+	u32 level;
+};
+
+enum mlx5hws_matcher_flow_src {
+	MLX5HWS_MATCHER_FLOW_SRC_ANY = 0x0,
+	MLX5HWS_MATCHER_FLOW_SRC_WIRE = 0x1,
+	MLX5HWS_MATCHER_FLOW_SRC_VPORT = 0x2,
+};
+
+enum mlx5hws_matcher_insert_mode {
+	MLX5HWS_MATCHER_INSERT_BY_HASH = 0x0,
+	MLX5HWS_MATCHER_INSERT_BY_INDEX = 0x1,
+};
+
+enum mlx5hws_matcher_distribute_mode {
+	MLX5HWS_MATCHER_DISTRIBUTE_BY_HASH = 0x0,
+	MLX5HWS_MATCHER_DISTRIBUTE_BY_LINEAR = 0x1,
+};
+
+struct mlx5hws_matcher_attr {
+	/* Processing priority inside table */
+	u32 priority;
+	/* Provide all rules with unique rule_idx in num_log range to reduce locking */
+	bool optimize_using_rule_idx;
+	/* Resource mode and corresponding size */
+	enum mlx5hws_matcher_resource_mode mode;
+	/* Optimize insertion in case packet origin is the same for all rules */
+	enum mlx5hws_matcher_flow_src optimize_flow_src;
+	/* Define the insertion and distribution modes for this matcher */
+	enum mlx5hws_matcher_insert_mode insert_mode;
+	enum mlx5hws_matcher_distribute_mode distribute_mode;
+	/* Define whether the created matcher supports resizing into a bigger matcher */
+	bool resizable;
+	union {
+		struct {
+			u8 sz_row_log;
+			u8 sz_col_log;
+		} table;
+
+		struct {
+			u8 num_log;
+		} rule;
+	};
+	/* Optional AT attach configuration - Max number of additional AT */
+	u8 max_num_of_at_attach;
+};
+
+struct mlx5hws_rule_attr {
+	void *user_data;
+	/* Valid if matcher optimize_using_rule_idx is set or
+	 * if matcher is configured to insert rules by index.
+	 */
+	u32 rule_idx;
+	u32 flow_source;
+	u16 queue_id;
+	u32 burst:1;
+};
+
+/* In actions that take offset, the offset is unique, pointing to a single
+ * resource and the user should not reuse the same index because data changing
+ * is not atomic.
+ */
+struct mlx5hws_rule_action {
+	struct mlx5hws_action *action;
+	union {
+		struct {
+			u32 value;
+		} tag;
+
+		struct {
+			u32 offset;
+		} counter;
+
+		struct {
+			u32 offset;
+			u8 *data;
+		} modify_header;
+
+		struct {
+			u32 offset;
+			u8 hdr_idx;
+			u8 *data;
+		} reformat;
+
+		struct {
+			__be32 vlan_hdr;
+		} push_vlan;
+
+		struct {
+			u32 offset;
+			enum mlx5hws_action_aso_meter_color init_color;
+		} aso_meter;
+	};
+};
+
+struct mlx5hws_action_reformat_header {
+	size_t sz;
+	void *data;
+};
+
+struct mlx5hws_action_insert_header {
+	struct mlx5hws_action_reformat_header hdr;
+	/* PRM start anchor to which header will be inserted */
+	u8 anchor;
+	/* Header insertion offset in bytes, from the start
+	 * anchor to the location where new header will be inserted.
+	 */
+	u8 offset;
+	/* Indicates this header insertion adds encapsulation header to the packet,
+	 * requiring device to update offloaded fields (for example IPv4 total length).
+	 */
+	bool encap;
+};
+
+struct mlx5hws_action_remove_header_attr {
+	/* PRM start anchor from which header will be removed */
+	u8 anchor;
+	/* Header remove offset in bytes, from the start
+	 * anchor to the location where remove header starts.
+	 */
+	u8 offset;
+	/* Indicates the removed header size in bytes */
+	size_t size;
+};
+
+struct mlx5hws_action_mh_pattern {
+	/* Byte size of modify actions provided by "data" */
+	size_t sz;
+	/* PRM format modify actions pattern */
+	__be64 *data;
+};
+
+struct mlx5hws_action_dest_attr {
+	/* Required destination action to forward the packet */
+	struct mlx5hws_action *dest;
+	/* Optional reformat action */
+	struct mlx5hws_action *reformat;
+};
+
+/* Check whether HWS is supported
+ *
+ * @param[in] mdev
+ *	The device to check.
+ * @return true if supported, false otherwise.
+ */
+static inline bool mlx5hws_is_supported(struct mlx5_core_dev *mdev)
+{
+	u8 ignore_flow_level_rtc_valid;
+	u8 wqe_based_flow_table_update;
+
+	wqe_based_flow_table_update =
+		MLX5_CAP_GEN(mdev, wqe_based_flow_table_update_cap);
+	ignore_flow_level_rtc_valid =
+		MLX5_CAP_FLOWTABLE(mdev,
+				   flow_table_properties_nic_receive.ignore_flow_level_rtc_valid);
+
+	return wqe_based_flow_table_update && ignore_flow_level_rtc_valid;
+}
+
+/* Open a context used for direct rule insertion using hardware steering.
+ * Each context can contain multiple tables of different types.
+ *
+ * @param[in] mdev
+ *	The device to be used for HWS.
+ * @param[in] attr
+ *	Attributes used for context open.
+ * @return pointer to mlx5hws_context on success NULL otherwise.
+ */
+struct mlx5hws_context *
+mlx5hws_context_open(struct mlx5_core_dev *mdev,
+		     struct mlx5hws_context_attr *attr);
+
+/* Close a context used for direct hardware steering.
+ *
+ * @param[in] ctx
+ *	mlx5hws context to close.
+ * @return zero on success non zero otherwise.
+ */
+int mlx5hws_context_close(struct mlx5hws_context *ctx);
+
+/* Set a peer context, each context can have multiple contexts as peers.
+ *
+ * @param[in] ctx
+ *	The context in which the peer_ctx will be peered to it.
+ * @param[in] peer_ctx
+ *	The peer context.
+ * @param[in] peer_vhca_id
+ *	The peer context vhca id.
+ */
+void mlx5hws_context_set_peer(struct mlx5hws_context *ctx,
+			      struct mlx5hws_context *peer_ctx,
+			      u16 peer_vhca_id);
+
+/* Create a new direct rule table. Each table can contain multiple matchers.
+ *
+ * @param[in] ctx
+ *	The context in which the new table will be opened.
+ * @param[in] attr
+ *	Attributes used for table creation.
+ * @return pointer to mlx5hws_table on success NULL otherwise.
+ */
+struct mlx5hws_table *
+mlx5hws_table_create(struct mlx5hws_context *ctx,
+		     struct mlx5hws_table_attr *attr);
+
+/* Destroy direct rule table.
+ *
+ * @param[in] tbl
+ *	Table to destroy.
+ * @return zero on success non zero otherwise.
+ */
+int mlx5hws_table_destroy(struct mlx5hws_table *tbl);
+
+/* Get ID of the flow table.
+ *
+ * @param[in] tbl
+ *	Table to get ID of.
+ * @return ID of the table.
+ */
+u32 mlx5hws_table_get_id(struct mlx5hws_table *tbl);
+
+/* Set default miss table for mlx5hws_table by using another mlx5hws_table
+ * Traffic which all table matchers miss will be forwarded to miss table.
+ *
+ * @param[in] tbl
+ *	Source table
+ * @param[in] miss_tbl
+ *	Target (miss) table, or NULL to remove current miss table
+ * @return zero on success non zero otherwise.
+ */
+int mlx5hws_table_set_default_miss(struct mlx5hws_table *tbl,
+				   struct mlx5hws_table *miss_tbl);
+
+/* Create new match template based on items mask, the match template
+ * will be used for matcher creation.
+ *
+ * @param[in] ctx
+ *	The context in which the new template will be created.
+ * @param[in] match_param
+ *	Describe the mask based on PRM match parameters
+ * @param[in] match_param_sz
+ *	Size of match param buffer
+ * @param[in] match_criteria_enable
+ *	Bitmap for each sub-set in match_criteria buffer
+ * @return pointer to mlx5hws_match_template on success NULL otherwise
+ */
+struct mlx5hws_match_template *
+mlx5hws_match_template_create(struct mlx5hws_context *ctx,
+			      u32 *match_param,
+			      u32 match_param_sz,
+			      u8 match_criteria_enable);
+
+/* Destroy match template.
+ *
+ * @param[in] mt
+ *	Match template to destroy.
+ * @return zero on success non zero otherwise.
+ */
+int mlx5hws_match_template_destroy(struct mlx5hws_match_template *mt);
+
+/* Create new action template based on action_type array, the action template
+ * will be used for matcher creation.
+ *
+ * @param[in] action_type
+ *	An array of actions based on the order of actions which will be provided
+ *	with rule_actions to mlx5hws_rule_create. The last action is marked
+ *	using MLX5HWS_ACTION_TYP_LAST.
+ * @return pointer to mlx5hws_action_template on success NULL otherwise
+ */
+struct mlx5hws_action_template *
+mlx5hws_action_template_create(enum mlx5hws_action_type action_type[]);
+
+/* Destroy action template.
+ *
+ * @param[in] at
+ *	Action template to destroy.
+ * @return zero on success non zero otherwise.
+ */
+int mlx5hws_action_template_destroy(struct mlx5hws_action_template *at);
+
+/* Create a new direct rule matcher. Each matcher can contain multiple rules.
+ * Matchers on the table will be processed by priority. Matching fields and
+ * mask are described by the match template. In some cases multiple match
+ * templates can be used on the same matcher.
+ *
+ * @param[in] table
+ *	The table in which the new matcher will be opened.
+ * @param[in] mt
+ *	Array of match templates to be used on matcher.
+ * @param[in] num_of_mt
+ *	Number of match templates in mt array.
+ * @param[in] at
+ *	Array of action templates to be used on matcher.
+ * @param[in] num_of_at
+ *	Number of action templates in mt array.
+ * @param[in] attr
+ *	Attributes used for matcher creation.
+ * @return pointer to mlx5hws_matcher on success NULL otherwise.
+ */
+struct mlx5hws_matcher *
+mlx5hws_matcher_create(struct mlx5hws_table *table,
+		       struct mlx5hws_match_template *mt[],
+		       u8 num_of_mt,
+		       struct mlx5hws_action_template *at[],
+		       u8 num_of_at,
+		       struct mlx5hws_matcher_attr *attr);
+
+/* Destroy direct rule matcher.
+ *
+ * @param[in] matcher
+ *	Matcher to destroy.
+ * @return zero on success non zero otherwise.
+ */
+int mlx5hws_matcher_destroy(struct mlx5hws_matcher *matcher);
+
+/* Attach new action template to direct rule matcher.
+ *
+ * @param[in] matcher
+ *	Matcher to attach at to.
+ * @param[in] at
+ *	Action template to be attached to the matcher.
+ * @return zero on success non zero otherwise.
+ */
+int mlx5hws_matcher_attach_at(struct mlx5hws_matcher *matcher,
+			      struct mlx5hws_action_template *at);
+
+/* Link two matchers and enable moving rules from src matcher to dst matcher.
+ * Both matchers must be in the same table type, must be created with 'resizable'
+ * property, and should have the same characteristics (e.g. same mt, same at).
+ *
+ * It is the user's responsibility to make sure that the dst matcher
+ * was allocated with the appropriate size.
+ *
+ * Once the function is completed, the user is:
+ *  - allowed to move rules from src into dst matcher
+ *  - no longer allowed to insert rules to the src matcher
+ *
+ * The user is always allowed to insert rules to the dst matcher and
+ * to delete rules from any matcher.
+ *
+ * @param[in] src_matcher
+ *	source matcher for moving rules from
+ * @param[in] dst_matcher
+ *	destination matcher for moving rules to
+ * @return zero on successful move, non zero otherwise.
+ */
+int mlx5hws_matcher_resize_set_target(struct mlx5hws_matcher *src_matcher,
+				      struct mlx5hws_matcher *dst_matcher);
+
+/* Enqueue moving rule operation: moving rule from src matcher to a dst matcher
+ *
+ * @param[in] src_matcher
+ *	matcher that the rule belongs to
+ * @param[in] rule
+ *	the rule to move
+ * @param[in] attr
+ *	rule attributes
+ * @return zero on success, non zero otherwise.
+ */
+int mlx5hws_matcher_resize_rule_move(struct mlx5hws_matcher *src_matcher,
+				     struct mlx5hws_rule *rule,
+				     struct mlx5hws_rule_attr *attr);
+
+/* Enqueue create rule operation.
+ *
+ * @param[in] matcher
+ *	The matcher in which the new rule will be created.
+ * @param[in] mt_idx
+ *	Match template index to create the match with.
+ * @param[in] match_param
+ *	The match parameter PRM buffer used for the value matching.
+ * @param[in] rule_actions
+ *	Rule action to be executed on match.
+ * @param[in] at_idx
+ *	Action template index to apply the actions with.
+ * @param[in] num_of_actions
+ *	Number of rule actions.
+ * @param[in] attr
+ *	Rule creation attributes.
+ * @param[in, out] rule_handle
+ *	A valid rule handle. The handle doesn't require any initialization.
+ * @return zero on successful enqueue non zero otherwise.
+ */
+int mlx5hws_rule_create(struct mlx5hws_matcher *matcher,
+			u8 mt_idx,
+			u32 *match_param,
+			u8 at_idx,
+			struct mlx5hws_rule_action rule_actions[],
+			struct mlx5hws_rule_attr *attr,
+			struct mlx5hws_rule *rule_handle);
+
+/* Enqueue destroy rule operation.
+ *
+ * @param[in] rule
+ *	The rule destruction to enqueue.
+ * @param[in] attr
+ *	Rule destruction attributes.
+ * @return zero on successful enqueue non zero otherwise.
+ */
+int mlx5hws_rule_destroy(struct mlx5hws_rule *rule,
+			 struct mlx5hws_rule_attr *attr);
+
+/* Enqueue update actions on an existing rule.
+ *
+ * @param[in, out] rule_handle
+ *	A valid rule handle to update.
+ * @param[in] at_idx
+ *	Action template index to update the actions with.
+ *  @param[in] rule_actions
+ *	Rule action to be executed on match.
+ * @param[in] attr
+ *	Rule update attributes.
+ * @return zero on successful enqueue non zero otherwise.
+ */
+int mlx5hws_rule_action_update(struct mlx5hws_rule *rule,
+			       u8 at_idx,
+			       struct mlx5hws_rule_action rule_actions[],
+			       struct mlx5hws_rule_attr *attr);
+
+/* Get action type.
+ *
+ * @param[in] action
+ *	The action to get the type of.
+ * @return action type.
+ */
+enum mlx5hws_action_type
+mlx5hws_action_get_type(struct mlx5hws_action *action);
+
+/* Create direct rule drop action.
+ *
+ * @param[in] ctx
+ *	The context in which the new action will be created.
+ * @param[in] flags
+ *	Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_dest_drop(struct mlx5hws_context *ctx,
+				u32 flags);
+
+/* Create direct rule default miss action.
+ * Defaults are RX: Drop TX: Wire.
+ *
+ * @param[in] ctx
+ *	The context in which the new action will be created.
+ * @param[in] flags
+ *	Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_default_miss(struct mlx5hws_context *ctx,
+				   u32 flags);
+
+/* Create direct rule goto table action.
+ *
+ * @param[in] ctx
+ *	The context in which the new action will be created.
+ * @param[in] tbl
+ *	Destination table.
+ * @param[in] flags
+ *	Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_dest_table(struct mlx5hws_context *ctx,
+				 struct mlx5hws_table *tbl,
+				 u32 flags);
+
+/* Create direct rule goto table number action.
+ *
+ * @param[in] ctx
+ *	The context in which the new action will be created.
+ * @param[in] tbl_num
+ *	Destination table number.
+ * @param[in] flags
+ *	Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_dest_table_num(struct mlx5hws_context *ctx,
+				     u32 table_num, u32 flags);
+
+/* Create direct rule range match action.
+ *
+ * @param[in] ctx
+ *	The context in which the new action will be created.
+ * @param[in] field
+ *	Field to comapare the value.
+ * @param[in] hit_ft
+ *	Flow table to go to on hit.
+ * @param[in] miss_ft
+ *	Flow table to go to on miss.
+ * @param[in] min
+ *	Minimal value of the field to be considered as hit.
+ * @param[in] max
+ *	Maximal value of the field to be considered as hit.
+ * @param[in] flags
+ *	Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_dest_match_range(struct mlx5hws_context *ctx,
+				       u32 field,
+				       struct mlx5_flow_table *hit_ft,
+				       struct mlx5_flow_table *miss_ft,
+				       u32 min, u32 max, u32 flags);
+
+/* Create direct rule flow sampler action.
+ *
+ * @param[in] ctx
+ *	The context in which the new action will be created.
+ * @param[in] sampler_id
+ *	Flow sampler object ID.
+ * @param[in] flags
+ *	Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_flow_sampler(struct mlx5hws_context *ctx,
+				   u32 sampler_id, u32 flags);
+
+/* Create direct rule goto vport action.
+ *
+ * @param[in] ctx
+ *	The context in which the new action will be created.
+ * @param[in] vport_num
+ *	Destination vport number.
+ * @param[in] vhca_id_valid
+ *	Tells if the vhca_id parameter is valid.
+ * @param[in] vhca_id
+ *	VHCA ID of the destination vport.
+ * @param[in] flags
+ *	Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_dest_vport(struct mlx5hws_context *ctx,
+				 u16 vport_num,
+				 bool vhca_id_valid,
+				 u16 vhca_id,
+				 u32 flags);
+
+/* Create direct rule TAG action.
+ *
+ * @param[in] ctx
+ *	The context in which the new action will be created.
+ * @param[in] flags
+ *	Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_tag(struct mlx5hws_context *ctx,
+			  u32 flags);
+
+/* Create direct rule counter action.
+ *
+ * @param[in] ctx
+ *	The context in which the new action will be created.
+ * @param[in] obj_id
+ *	Direct rule counter object ID.
+ * @param[in] flags
+ *	Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_counter(struct mlx5hws_context *ctx,
+			      u32 obj_id,
+			      u32 flags);
+
+/* Create direct rule reformat action.
+ *
+ * @param[in] ctx
+ *	The context in which the new action will be created.
+ * @param[in] reformat_type
+ *	Type of reformat prefixed with MLX5HWS_ACTION_TYP_REFORMAT.
+ * @param[in] num_of_hdrs
+ *	Number of provided headers in "hdrs" array.
+ * @param[in] hdrs
+ *	Headers array containing header information.
+ * @param[in] log_bulk_size
+ *	Number of unique values used with this reformat.
+ * @param[in] flags
+ *	Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_reformat(struct mlx5hws_context *ctx,
+			       enum mlx5hws_action_type reformat_type,
+			       u8 num_of_hdrs,
+			       struct mlx5hws_action_reformat_header *hdrs,
+			       u32 log_bulk_size,
+			       u32 flags);
+
+/* Create direct rule modify header action.
+ *
+ * @param[in] ctx
+ *	The context in which the new action will be created.
+ * @param[in] num_of_patterns
+ *	Number of provided patterns in "patterns" array.
+ * @param[in] patterns
+ *	Patterns array containing pattern information.
+ * @param[in] log_bulk_size
+ *	Number of unique values used with this pattern.
+ * @param[in] flags
+ *	Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_modify_header(struct mlx5hws_context *ctx,
+				    u8 num_of_patterns,
+				    struct mlx5hws_action_mh_pattern *patterns,
+				    u32 log_bulk_size,
+				    u32 flags);
+
+/* Create direct rule ASO flow meter action.
+ *
+ * @param[in] ctx
+ *	The context in which the new action will be created.
+ * @param[in] obj_id
+ *	ASO object ID.
+ * @param[in] return_reg_c
+ *	Copy the ASO object value into this reg_c, after a packet hits a rule with this ASO object.
+ * @param[in] flags
+ *	Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_aso_meter(struct mlx5hws_context *ctx,
+				u32 obj_id,
+				u8 return_reg_c,
+				u32 flags);
+
+/* Create direct rule pop vlan action.
+ * @param[in] ctx
+ *	The context in which the new action will be created.
+ * @param[in] flags
+ *	Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_pop_vlan(struct mlx5hws_context *ctx, u32 flags);
+
+/* Create direct rule push vlan action.
+ * @param[in] ctx
+ *	The context in which the new action will be created.
+ * @param[in] flags
+ *	Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_push_vlan(struct mlx5hws_context *ctx, u32 flags);
+
+/* Create a dest array action, this action can duplicate packets and forward to
+ * multiple destinations in the destination list.
+ * @param[in] ctx
+ *     The context in which the new action will be created.
+ * @param[in] num_dest
+ *     The number of dests attributes.
+ * @param[in] dests
+ *     The destination array. Each contains a destination action and can have
+ *     additional actions.
+ * @param[in] ignore_flow_level
+ *     Boolean that says whether to turn on 'ignore_flow_level' for this dest.
+ * @param[in] flow_source
+ *     Source port of the traffic for this actions.
+ * @param[in] flags
+ *     Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_dest_array(struct mlx5hws_context *ctx,
+				 size_t num_dest,
+				 struct mlx5hws_action_dest_attr *dests,
+				 bool ignore_flow_level,
+				 u32 flow_source,
+				 u32 flags);
+
+/* Create insert header action.
+ *
+ * @param[in] ctx
+ *	The context in which the new action will be created.
+ * @param[in] num_of_hdrs
+ *	Number of provided headers in "hdrs" array.
+ * @param[in] hdrs
+ *	Headers array containing header information.
+ * @param[in] log_bulk_size
+ *	Number of unique values used with this insert header.
+ * @param[in] flags
+ *	Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_insert_header(struct mlx5hws_context *ctx,
+				    u8 num_of_hdrs,
+				    struct mlx5hws_action_insert_header *hdrs,
+				    u32 log_bulk_size,
+				    u32 flags);
+
+/* Create remove header action.
+ *
+ * @param[in] ctx
+ *	The context in which the new action will be created.
+ * @param[in] attr
+ *	attributes: specifies the remove header type, PRM start anchor and
+ *	the PRM end anchor or the PRM start anchor and remove size in bytes.
+ * @param[in] flags
+ *	Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_remove_header(struct mlx5hws_context *ctx,
+				    struct mlx5hws_action_remove_header_attr *attr,
+				    u32 flags);
+
+/* Create direct rule LAST action.
+ *
+ * @param[in] ctx
+ *     The context in which the new action will be created.
+ * @param[in] flags
+ *     Action creation flags. (enum mlx5hws_action_flags)
+ * @return pointer to mlx5hws_action on success NULL otherwise.
+ */
+struct mlx5hws_action *
+mlx5hws_action_create_last(struct mlx5hws_context *ctx, u32 flags);
+
+/* Destroy direct rule action.
+ *
+ * @param[in] action
+ *	The action to destroy.
+ * @return zero on success non zero otherwise.
+ */
+int mlx5hws_action_destroy(struct mlx5hws_action *action);
+
+enum mlx5hws_flow_op_status {
+	MLX5HWS_FLOW_OP_SUCCESS,
+	MLX5HWS_FLOW_OP_ERROR,
+};
+
+struct mlx5hws_flow_op_result {
+	enum mlx5hws_flow_op_status status;
+	void *user_data;
+};
+
+/* Poll queue for rule creation and deletions completions.
+ *
+ * @param[in] ctx
+ *	The context to which the queue belong to.
+ * @param[in] queue_id
+ *	The id of the queue to poll.
+ * @param[in, out] res
+ *	Completion array.
+ * @param[in] res_nb
+ *	Maximum number of results to return.
+ * @return negative number on failure, the number of completions otherwise.
+ */
+int mlx5hws_send_queue_poll(struct mlx5hws_context *ctx,
+			    u16 queue_id,
+			    struct mlx5hws_flow_op_result res[],
+			    u32 res_nb);
+
+/* Perform an action on the queue
+ *
+ * @param[in] ctx
+ *	The context to which the queue belong to.
+ * @param[in] queue_id
+ *	The id of the queue to perform the action on.
+ * @param[in] actions
+ *	Actions to perform on the queue. (enum mlx5hws_send_queue_actions)
+ * @return zero on success non zero otherwise.
+ */
+int mlx5hws_send_queue_action(struct mlx5hws_context *ctx,
+			      u16 queue_id,
+			      u32 actions);
+
+/* Dump HWS info
+ *
+ * @param[in] ctx
+ *	The context which to dump the info from.
+ * @return zero on success non zero otherwise.
+ */
+int mlx5hws_debug_dump(struct mlx5hws_context *ctx);
+
+struct mlx5hws_bwc_matcher;
+struct mlx5hws_bwc_rule;
+
+struct mlx5hws_match_parameters {
+	size_t match_sz;
+	u32 *match_buf; /* Device spec format */
+};
+
+/* Create a new BWC direct rule matcher.
+ * This function does the following:
+ *   - creates match template based on flow items
+ *   - creates an empty action template
+ *   - creates a usual mlx5hws_matcher with these mt and at, setting
+ *     its size to minimal
+ * Notes:
+ *   - table->ctx must have BWC support
+ *   - complex rules are not supported
+ *
+ * @param[in] table
+ *	The table in which the new matcher will be opened
+ * @param[in] priority
+ *	Priority for this BWC matcher
+ * @param[in] match_criteria_enable
+ *	Bitmask that defines matching criteria
+ * @param[in] mask
+ *	Match parameters
+ * @return pointer to mlx5hws_bwc_matcher on success or NULL otherwise.
+ */
+struct mlx5hws_bwc_matcher *
+mlx5hws_bwc_matcher_create(struct mlx5hws_table *table,
+			   u32 priority,
+			   u8 match_criteria_enable,
+			   struct mlx5hws_match_parameters *mask);
+
+/* Destroy BWC direct rule matcher.
+ *
+ * @param[in] bwc_matcher
+ *	Matcher to destroy
+ * @return zero on success, non zero otherwise
+ */
+int mlx5hws_bwc_matcher_destroy(struct mlx5hws_bwc_matcher *bwc_matcher);
+
+/* Create a new BWC rule.
+ * Unlike the usual rule creation function, this one is blocking: when the
+ * function returns, the rule is written to its place (no need to poll).
+ * This function does the following:
+ *   - finds matching action template based on the provided rule_actions, or
+ *     creates new action template if matching action template doesn't exist
+ *   - updates corresponding BWC matcher stats
+ *   - if needed, the function performs rehash:
+ *       - creates a new matcher based on mt, at, new_sz
+ *       - moves all the existing matcher rules to the new matcher
+ *       - removes the old matcher
+ *   - inserts new rule
+ *   - polls till completion is received
+ * Notes:
+ *   - matcher->tbl->ctx must have BWC support
+ *   - separate BWC ctx queues are used
+ *
+ * @param[in] bwc_matcher
+ *	The BWC matcher in which the new rule will be created.
+ * @param[in] params
+ *	Match perameters
+ * @param[in] flow_source
+ *	Flow source for this rule
+ * @param[in] rule_actions
+ *	Rule action to be executed on match
+ * @return valid BWC rule handle on success, NULL otherwise
+ */
+struct mlx5hws_bwc_rule *
+mlx5hws_bwc_rule_create(struct mlx5hws_bwc_matcher *bwc_matcher,
+			struct mlx5hws_match_parameters *params,
+			u32 flow_source,
+			struct mlx5hws_rule_action rule_actions[]);
+
+/* Destroy BWC direct rule.
+ *
+ * @param[in] bwc_rule
+ *	Rule to destroy
+ * @return zero on success, non zero otherwise
+ */
+int mlx5hws_bwc_rule_destroy(struct mlx5hws_bwc_rule *bwc_rule);
+
+/* Update actions on an existing BWC rule.
+ *
+ * @param[in] bwc_rule
+ *	Rule to update
+ * @param[in] rule_actions
+ *	Rule action to update with
+ * @return zero on successful update, non zero otherwise.
+ */
+int mlx5hws_bwc_rule_action_update(struct mlx5hws_bwc_rule *bwc_rule,
+				   struct mlx5hws_rule_action rule_actions[]);
+
+#endif

drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_internal.h

@@ -5,13 +5,13 @@
 #define MLX5HWS_INTERNAL_H_
 
 #include <linux/mlx5/transobj.h>
-
-#include "../dr_types.h"
+#include <linux/mlx5/vport.h>
+#include "fs_core.h"
+#include "wq.h"
+#include "lib/mlx5.h"
 
 #include "mlx5hws_prm.h"
-
 #include "mlx5hws.h"
-
 #include "mlx5hws_pool.h"
 #include "mlx5hws_vport.h"
 #include "mlx5hws_context.h"