add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/include/linux/mlx5/eswitch.h
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@@ -7,13 +7,14 @@
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 #define _MLX5_ESWITCH_
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 #include <linux/mlx5/driver.h>
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+#include <net/devlink.h>
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 #define MLX5_ESWITCH_MANAGER(mdev) MLX5_CAP_GEN(mdev, eswitch_manager)
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 enum {
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-	SRIOV_NONE,
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-	SRIOV_LEGACY,
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-	SRIOV_OFFLOADS
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+	MLX5_ESWITCH_NONE,
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+	MLX5_ESWITCH_LEGACY,
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+	MLX5_ESWITCH_OFFLOADS
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 };
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 enum {
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@@ -22,39 +23,117 @@
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 	NUM_REP_TYPES,
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 };
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+enum {
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+	REP_UNREGISTERED,
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+	REP_REGISTERED,
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+	REP_LOADED,
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+};
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+
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 struct mlx5_eswitch_rep;
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-struct mlx5_eswitch_rep_if {
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-	int		       (*load)(struct mlx5_core_dev *dev,
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-				       struct mlx5_eswitch_rep *rep);
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-	void		       (*unload)(struct mlx5_eswitch_rep *rep);
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-	void		       *(*get_proto_dev)(struct mlx5_eswitch_rep *rep);
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-	void			*priv;
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-	bool		       valid;
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+struct mlx5_eswitch_rep_ops {
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+	int (*load)(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep);
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+	void (*unload)(struct mlx5_eswitch_rep *rep);
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+	void *(*get_proto_dev)(struct mlx5_eswitch_rep *rep);
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+};
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+
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+struct mlx5_eswitch_rep_data {
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+	void *priv;
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+	atomic_t state;
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 };
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 struct mlx5_eswitch_rep {
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-	struct mlx5_eswitch_rep_if rep_if[NUM_REP_TYPES];
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+	struct mlx5_eswitch_rep_data rep_data[NUM_REP_TYPES];
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 	u16		       vport;
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-	u8		       hw_id[ETH_ALEN];
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 	u16		       vlan;
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+	/* Only IB rep is using vport_index */
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+	u16		       vport_index;
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 	u32		       vlan_refcount;
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 };
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-void mlx5_eswitch_register_vport_rep(struct mlx5_eswitch *esw,
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-				     int vport_index,
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-				     struct mlx5_eswitch_rep_if *rep_if,
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-				     u8 rep_type);
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-void mlx5_eswitch_unregister_vport_rep(struct mlx5_eswitch *esw,
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-				       int vport_index,
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-				       u8 rep_type);
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+void mlx5_eswitch_register_vport_reps(struct mlx5_eswitch *esw,
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+				      const struct mlx5_eswitch_rep_ops *ops,
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+				      u8 rep_type);
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+void mlx5_eswitch_unregister_vport_reps(struct mlx5_eswitch *esw, u8 rep_type);
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 void *mlx5_eswitch_get_proto_dev(struct mlx5_eswitch *esw,
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-				 int vport,
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+				 u16 vport_num,
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 				 u8 rep_type);
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 struct mlx5_eswitch_rep *mlx5_eswitch_vport_rep(struct mlx5_eswitch *esw,
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-						int vport);
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+						u16 vport_num);
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 void *mlx5_eswitch_uplink_get_proto_dev(struct mlx5_eswitch *esw, u8 rep_type);
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-u8 mlx5_eswitch_mode(struct mlx5_eswitch *esw);
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 struct mlx5_flow_handle *
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 mlx5_eswitch_add_send_to_vport_rule(struct mlx5_eswitch *esw,
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-				    int vport, u32 sqn);
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+				    u16 vport_num, u32 sqn);
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+
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+u16 mlx5_eswitch_get_total_vports(const struct mlx5_core_dev *dev);
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+
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+#ifdef CONFIG_MLX5_ESWITCH
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+enum devlink_eswitch_encap_mode
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+mlx5_eswitch_get_encap_mode(const struct mlx5_core_dev *dev);
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+
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+bool mlx5_eswitch_reg_c1_loopback_enabled(const struct mlx5_eswitch *esw);
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+bool mlx5_eswitch_vport_match_metadata_enabled(const struct mlx5_eswitch *esw);
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+
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+/* Reg C0 usage:
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+ * Reg C0 = < ESW_PFNUM_BITS(4) | ESW_VPORT BITS(12) | ESW_CHAIN_TAG(16) >
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+ *
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+ * Highest 4 bits of the reg c0 is the PF_NUM (range 0-15), 12 bits of
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+ * unique non-zero vport id (range 1-4095). The rest (lowest 16 bits) is left
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+ * for tc chain tag restoration.
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+ * PFNUM + VPORT comprise the SOURCE_PORT matching.
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+ */
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+#define ESW_VPORT_BITS 12
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+#define ESW_PFNUM_BITS 4
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+#define ESW_SOURCE_PORT_METADATA_BITS (ESW_PFNUM_BITS + ESW_VPORT_BITS)
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+#define ESW_SOURCE_PORT_METADATA_OFFSET (32 - ESW_SOURCE_PORT_METADATA_BITS)
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+#define ESW_CHAIN_TAG_METADATA_BITS (32 - ESW_SOURCE_PORT_METADATA_BITS)
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+#define ESW_CHAIN_TAG_METADATA_MASK GENMASK(ESW_CHAIN_TAG_METADATA_BITS - 1,\
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+					    0)
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+
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+static inline u32 mlx5_eswitch_get_vport_metadata_mask(void)
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+{
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+	return GENMASK(31, 32 - ESW_SOURCE_PORT_METADATA_BITS);
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+}
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+
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+u32 mlx5_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw,
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+					      u16 vport_num);
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+u8 mlx5_eswitch_mode(struct mlx5_eswitch *esw);
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+#else  /* CONFIG_MLX5_ESWITCH */
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+
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+static inline u8 mlx5_eswitch_mode(struct mlx5_eswitch *esw)
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+{
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+	return MLX5_ESWITCH_NONE;
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+}
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+
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+static inline enum devlink_eswitch_encap_mode
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+mlx5_eswitch_get_encap_mode(const struct mlx5_core_dev *dev)
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+{
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+	return DEVLINK_ESWITCH_ENCAP_MODE_NONE;
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+}
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+
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+static inline bool
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+mlx5_eswitch_reg_c1_loopback_enabled(const struct mlx5_eswitch *esw)
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+{
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+	return false;
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+};
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+
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+static inline bool
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+mlx5_eswitch_vport_match_metadata_enabled(const struct mlx5_eswitch *esw)
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+{
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+	return false;
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+};
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+
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+static inline u32
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+mlx5_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw,
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+					  int vport_num)
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+{
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+	return 0;
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+};
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+
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+static inline u32
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+mlx5_eswitch_get_vport_metadata_mask(void)
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+{
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+	return 0;
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+}
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+#endif /* CONFIG_MLX5_ESWITCH */
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+
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 #endif