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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/net/ethernet/mellanox/mlx5/core/fs_core.h
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@@ -36,10 +36,51 @@
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 #include <linux/refcount.h>
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 #include <linux/mlx5/fs.h>
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 #include <linux/rhashtable.h>
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+#include <linux/llist.h>
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+#include <steering/fs_dr.h>
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+
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+#define FDB_TC_MAX_CHAIN 3
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+#define FDB_FT_CHAIN (FDB_TC_MAX_CHAIN + 1)
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+#define FDB_TC_SLOW_PATH_CHAIN (FDB_FT_CHAIN + 1)
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+
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+/* The index of the last real chain (FT) + 1 as chain zero is valid as well */
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+#define FDB_NUM_CHAINS (FDB_FT_CHAIN + 1)
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+
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+#define FDB_TC_MAX_PRIO 16
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+#define FDB_TC_LEVELS_PER_PRIO 2
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+
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+struct mlx5_modify_hdr {
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+	enum mlx5_flow_namespace_type ns_type;
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+	union {
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+		struct mlx5_fs_dr_action action;
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+		u32 id;
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+	};
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+};
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+
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+struct mlx5_pkt_reformat {
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+	enum mlx5_flow_namespace_type ns_type;
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+	int reformat_type; /* from mlx5_ifc */
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+	union {
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+		struct mlx5_fs_dr_action action;
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+		u32 id;
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+	};
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+};
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+
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+/* FS_TYPE_PRIO_CHAINS is a PRIO that will have namespaces only,
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+ * and those are in parallel to one another when going over them to connect
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+ * a new flow table. Meaning the last flow table in a TYPE_PRIO prio in one
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+ * parallel namespace will not automatically connect to the first flow table
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+ * found in any prio in any next namespace, but skip the entire containing
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+ * TYPE_PRIO_CHAINS prio.
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+ *
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+ * This is used to implement tc chains, each chain of prios is a different
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+ * namespace inside a containing TYPE_PRIO_CHAINS prio.
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+ */
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 enum fs_node_type {
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 	FS_TYPE_NAMESPACE,
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 	FS_TYPE_PRIO,
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+	FS_TYPE_PRIO_CHAINS,
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 	FS_TYPE_FLOW_TABLE,
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 	FS_TYPE_FLOW_GROUP,
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 	FS_TYPE_FLOW_ENTRY,
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@@ -54,7 +95,9 @@
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 	FS_FT_FDB             = 0X4,
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 	FS_FT_SNIFFER_RX	= 0X5,
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 	FS_FT_SNIFFER_TX	= 0X6,
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-	FS_FT_MAX_TYPE = FS_FT_SNIFFER_TX,
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+	FS_FT_RDMA_RX		= 0X7,
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+	FS_FT_RDMA_TX		= 0X8,
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+	FS_FT_MAX_TYPE = FS_FT_RDMA_TX,
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 };
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 enum fs_flow_table_op_mod {
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@@ -66,16 +109,25 @@
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 	FS_FTE_STATUS_EXISTING = 1UL << 0,
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 };
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111
 
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+enum mlx5_flow_steering_mode {
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+	MLX5_FLOW_STEERING_MODE_DMFS,
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+	MLX5_FLOW_STEERING_MODE_SMFS
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+};
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+
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 struct mlx5_flow_steering {
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 	struct mlx5_core_dev *dev;
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-	struct kmem_cache               *fgs_cache;
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+	enum   mlx5_flow_steering_mode	mode;
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+	struct kmem_cache		*fgs_cache;
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 	struct kmem_cache               *ftes_cache;
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 	struct mlx5_flow_root_namespace *root_ns;
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 	struct mlx5_flow_root_namespace *fdb_root_ns;
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+	struct mlx5_flow_namespace	**fdb_sub_ns;
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 	struct mlx5_flow_root_namespace **esw_egress_root_ns;
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 	struct mlx5_flow_root_namespace **esw_ingress_root_ns;
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 	struct mlx5_flow_root_namespace	*sniffer_tx_root_ns;
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 	struct mlx5_flow_root_namespace	*sniffer_rx_root_ns;
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+	struct mlx5_flow_root_namespace	*rdma_rx_root_ns;
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+	struct mlx5_flow_root_namespace	*rdma_tx_root_ns;
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 	struct mlx5_flow_root_namespace	*egress_root_ns;
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 };
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@@ -96,6 +148,7 @@
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 struct mlx5_flow_rule {
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 	struct fs_node				node;
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+	struct mlx5_flow_table			*ft;
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 	struct mlx5_flow_destination		dest_attr;
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 	/* next_ft should be accessed under chain_lock and only of
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 	 * destination type is FWD_NEXT_fT.
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@@ -112,6 +165,7 @@
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 /* Type of children is mlx5_flow_group */
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 struct mlx5_flow_table {
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 	struct fs_node			node;
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+	struct mlx5_fs_dr_table		fs_dr_table;
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 	u32				id;
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 	u16				vport;
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 	unsigned int			max_fte;
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@@ -123,6 +177,7 @@
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 		unsigned int		required_groups;
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 		unsigned int		group_size;
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 		unsigned int		num_groups;
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+		unsigned int		max_fte;
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 	} autogroup;
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 	/* Protect fwd_rules */
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 	struct mutex			lock;
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@@ -130,29 +185,8 @@
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 	struct list_head		fwd_rules;
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 	u32				flags;
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 	struct rhltable			fgs_hash;
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-};
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-
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-struct mlx5_fc_cache {
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-	u64 packets;
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-	u64 bytes;
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-	u64 lastuse;
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-};
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-
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-struct mlx5_fc {
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-	struct rb_node node;
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-	struct list_head list;
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-
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-	/* last{packets,bytes} members are used when calculating the delta since
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-	 * last reading
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-	 */
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-	u64 lastpackets;
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-	u64 lastbytes;
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-
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-	u32 id;
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-	bool deleted;
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-	bool aging;
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-
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-	struct mlx5_fc_cache cache ____cacheline_aligned_in_smp;
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+	enum mlx5_flow_table_miss_action def_miss_action;
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+	struct mlx5_flow_namespace	*ns;
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 };
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 struct mlx5_ft_underlay_qp {
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@@ -160,7 +194,7 @@
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 	u32 qpn;
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 };
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-#define MLX5_FTE_MATCH_PARAM_RESERVED	reserved_at_800
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+#define MLX5_FTE_MATCH_PARAM_RESERVED	reserved_at_a00
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 /* Calculate the fte_match_param length and without the reserved length.
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  * Make sure the reserved field is the last.
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  */
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@@ -175,13 +209,16 @@
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 /* Type of children is mlx5_flow_rule */
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 struct fs_fte {
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 	struct fs_node			node;
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+	struct mlx5_fs_dr_rule		fs_dr_rule;
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 	u32				val[MLX5_ST_SZ_DW_MATCH_PARAM];
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 	u32				dests_size;
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 	u32				index;
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+	struct mlx5_flow_context	flow_context;
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 	struct mlx5_flow_act		action;
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 	enum fs_fte_status		status;
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 	struct mlx5_fc			*counter;
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 	struct rhash_head		hash;
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+	int				modify_mask;
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 };
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 /* Type of children is mlx5_flow_table/namespace */
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@@ -197,6 +234,7 @@
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 struct mlx5_flow_namespace {
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 	/* parent == NULL => root ns */
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 	struct	fs_node			node;
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+	enum mlx5_flow_table_miss_action def_miss_action;
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 };
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 struct mlx5_flow_group_mask {
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@@ -207,6 +245,7 @@
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 /* Type of children is fs_fte */
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 struct mlx5_flow_group {
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 	struct fs_node			node;
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+	struct mlx5_fs_dr_matcher	fs_dr_matcher;
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 	struct mlx5_flow_group_mask	mask;
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 	u32				start_index;
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 	u32				max_ftes;
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@@ -218,6 +257,8 @@
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 struct mlx5_flow_root_namespace {
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 	struct mlx5_flow_namespace	ns;
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+	enum   mlx5_flow_steering_mode	mode;
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+	struct mlx5_fs_dr_domain	fs_dr_domain;
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 	enum   fs_flow_table_type	table_type;
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 	struct mlx5_core_dev		*dev;
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 	struct mlx5_flow_table		*root_ft;
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@@ -234,6 +275,14 @@
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 			      unsigned long delay);
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 void mlx5_fc_update_sampling_interval(struct mlx5_core_dev *dev,
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 				      unsigned long interval);
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+
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+const struct mlx5_flow_cmds *mlx5_fs_cmd_get_fw_cmds(void);
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+
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+int mlx5_flow_namespace_set_peer(struct mlx5_flow_root_namespace *ns,
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+				 struct mlx5_flow_root_namespace *peer_ns);
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+
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+int mlx5_flow_namespace_set_mode(struct mlx5_flow_namespace *ns,
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+				 enum mlx5_flow_steering_mode mode);
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 int mlx5_init_fs(struct mlx5_core_dev *dev);
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 void mlx5_cleanup_fs(struct mlx5_core_dev *dev);
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@@ -280,7 +329,9 @@
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 	(type == FS_FT_FDB) ? MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, cap) :		\
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 	(type == FS_FT_SNIFFER_RX) ? MLX5_CAP_FLOWTABLE_SNIFFER_RX(mdev, cap) :		\
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 	(type == FS_FT_SNIFFER_TX) ? MLX5_CAP_FLOWTABLE_SNIFFER_TX(mdev, cap) :		\
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-	(BUILD_BUG_ON_ZERO(FS_FT_SNIFFER_TX != FS_FT_MAX_TYPE))\
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+	(type == FS_FT_RDMA_RX) ? MLX5_CAP_FLOWTABLE_RDMA_RX(mdev, cap) :		\
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+	(type == FS_FT_RDMA_TX) ? MLX5_CAP_FLOWTABLE_RDMA_TX(mdev, cap) :      \
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+	(BUILD_BUG_ON_ZERO(FS_FT_RDMA_TX != FS_FT_MAX_TYPE))\
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 	)
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 #endif