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/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
/*
* Copyright (c) 2018 Mellanox Technologies. All rights reserved.
*/
#ifndef _MLX5_ESWITCH_
#define _MLX5_ESWITCH_
#include <linux/mlx5/driver.h>
#include <net/devlink.h>
#define MLX5_ESWITCH_MANAGER(mdev) MLX5_CAP_GEN(mdev, eswitch_manager)
enum {
MLX5_ESWITCH_NONE,
MLX5_ESWITCH_LEGACY,
MLX5_ESWITCH_OFFLOADS
};
enum {
REP_ETH,
REP_IB,
NUM_REP_TYPES,
};
enum {
REP_UNREGISTERED,
REP_REGISTERED,
REP_LOADED,
};
enum mlx5_switchdev_event {
MLX5_SWITCHDEV_EVENT_PAIR,
MLX5_SWITCHDEV_EVENT_UNPAIR,
};
struct mlx5_eswitch_rep;
struct mlx5_eswitch_rep_ops {
int (*load)(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep);
void (*unload)(struct mlx5_eswitch_rep *rep);
void *(*get_proto_dev)(struct mlx5_eswitch_rep *rep);
int (*event)(struct mlx5_eswitch *esw,
struct mlx5_eswitch_rep *rep,
enum mlx5_switchdev_event event,
void *data);
};
struct mlx5_eswitch_rep_data {
void *priv;
atomic_t state;
};
struct mlx5_eswitch_rep {
struct mlx5_eswitch_rep_data rep_data[NUM_REP_TYPES];
u16 vport;
u16 vlan;
/* Only IB rep is using vport_index */
u16 vport_index;
u32 vlan_refcount;
struct mlx5_eswitch *esw;
};
void mlx5_eswitch_register_vport_reps(struct mlx5_eswitch *esw,
const struct mlx5_eswitch_rep_ops *ops,
u8 rep_type);
void mlx5_eswitch_unregister_vport_reps(struct mlx5_eswitch *esw, u8 rep_type);
void *mlx5_eswitch_get_proto_dev(struct mlx5_eswitch *esw,
u16 vport_num,
u8 rep_type);
struct mlx5_eswitch_rep *mlx5_eswitch_vport_rep(struct mlx5_eswitch *esw,
u16 vport_num);
void *mlx5_eswitch_uplink_get_proto_dev(struct mlx5_eswitch *esw, u8 rep_type);
struct mlx5_flow_handle *
mlx5_eswitch_add_send_to_vport_rule(struct mlx5_eswitch *on_esw,
struct mlx5_eswitch *from_esw,
struct mlx5_eswitch_rep *rep, u32 sqn);
#ifdef CONFIG_MLX5_ESWITCH
enum devlink_eswitch_encap_mode
mlx5_eswitch_get_encap_mode(const struct mlx5_core_dev *dev);
bool mlx5_eswitch_reg_c1_loopback_enabled(const struct mlx5_eswitch *esw);
bool mlx5_eswitch_vport_match_metadata_enabled(const struct mlx5_eswitch *esw);
/* Reg C0 usage:
* Reg C0 = < ESW_PFNUM_BITS(4) | ESW_VPORT BITS(12) | ESW_REG_C0_OBJ(16) >
*
* Highest 4 bits of the reg c0 is the PF_NUM (range 0-15), 12 bits of
* unique non-zero vport id (range 1-4095). The rest (lowest 16 bits) is left
* for user data objects managed by a common mapping context.
* PFNUM + VPORT comprise the SOURCE_PORT matching.
*/
#define ESW_VPORT_BITS 12
#define ESW_PFNUM_BITS 4
#define ESW_SOURCE_PORT_METADATA_BITS (ESW_PFNUM_BITS + ESW_VPORT_BITS)
#define ESW_SOURCE_PORT_METADATA_OFFSET (32 - ESW_SOURCE_PORT_METADATA_BITS)
#define ESW_REG_C0_USER_DATA_METADATA_BITS (32 - ESW_SOURCE_PORT_METADATA_BITS)
#define ESW_REG_C0_USER_DATA_METADATA_MASK GENMASK(ESW_REG_C0_USER_DATA_METADATA_BITS - 1, 0)
static inline u32 mlx5_eswitch_get_vport_metadata_mask(void)
{
return GENMASK(31, 32 - ESW_SOURCE_PORT_METADATA_BITS);
}
u32 mlx5_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw,
u16 vport_num);
u32 mlx5_eswitch_get_vport_metadata_for_set(struct mlx5_eswitch *esw,
u16 vport_num);
/* Reg C1 usage:
* Reg C1 = < Reserved(1) | ESW_TUN_ID(12) | ESW_TUN_OPTS(11) | ESW_ZONE_ID(8) >
*
* Highest bit is reserved for other offloads as marker bit, next 12 bits of reg c1
* is the encapsulation tunnel id, next 11 bits is encapsulation tunnel options,
* and the lowest 8 bits are used for zone id.
*
* Zone id is used to restore CT flow when packet misses on chain.
*
* Tunnel id and options are used together to restore the tunnel info metadata
* on miss and to support inner header rewrite by means of implicit chain 0
* flows.
*/
#define ESW_RESERVED_BITS 1
#define ESW_ZONE_ID_BITS 8
#define ESW_TUN_OPTS_BITS 11
#define ESW_TUN_ID_BITS 12
#define ESW_TUN_OPTS_OFFSET ESW_ZONE_ID_BITS
#define ESW_TUN_OFFSET ESW_TUN_OPTS_OFFSET
#define ESW_ZONE_ID_MASK GENMASK(ESW_ZONE_ID_BITS - 1, 0)
#define ESW_TUN_OPTS_MASK GENMASK(31 - ESW_TUN_ID_BITS - ESW_RESERVED_BITS, ESW_TUN_OPTS_OFFSET)
#define ESW_TUN_MASK GENMASK(31 - ESW_RESERVED_BITS, ESW_TUN_OFFSET)
#define ESW_TUN_ID_SLOW_TABLE_GOTO_VPORT 0 /* 0 is not a valid tunnel id */
/* 0x7FF is a reserved mapping */
#define ESW_TUN_OPTS_SLOW_TABLE_GOTO_VPORT GENMASK(ESW_TUN_OPTS_BITS - 1, 0)
#define ESW_TUN_SLOW_TABLE_GOTO_VPORT ((ESW_TUN_ID_SLOW_TABLE_GOTO_VPORT << ESW_TUN_OPTS_BITS) | \
ESW_TUN_OPTS_SLOW_TABLE_GOTO_VPORT)
#define ESW_TUN_SLOW_TABLE_GOTO_VPORT_MARK ESW_TUN_OPTS_MASK
u8 mlx5_eswitch_mode(struct mlx5_core_dev *dev);
u16 mlx5_eswitch_get_total_vports(const struct mlx5_core_dev *dev);
struct mlx5_core_dev *mlx5_eswitch_get_core_dev(struct mlx5_eswitch *esw);
#else /* CONFIG_MLX5_ESWITCH */
static inline u8 mlx5_eswitch_mode(struct mlx5_core_dev *dev)
{
return MLX5_ESWITCH_NONE;
}
static inline enum devlink_eswitch_encap_mode
mlx5_eswitch_get_encap_mode(const struct mlx5_core_dev *dev)
{
return DEVLINK_ESWITCH_ENCAP_MODE_NONE;
}
static inline bool
mlx5_eswitch_reg_c1_loopback_enabled(const struct mlx5_eswitch *esw)
{
return false;
};
static inline bool
mlx5_eswitch_vport_match_metadata_enabled(const struct mlx5_eswitch *esw)
{
return false;
};
static inline u32
mlx5_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw, u16 vport_num)
{
return 0;
};
static inline u32
mlx5_eswitch_get_vport_metadata_mask(void)
{
return 0;
}
static inline u16 mlx5_eswitch_get_total_vports(const struct mlx5_core_dev *dev)
{
return 0;
}
static inline struct mlx5_core_dev *mlx5_eswitch_get_core_dev(struct mlx5_eswitch *esw)
{
return NULL;
}
#endif /* CONFIG_MLX5_ESWITCH */
static inline bool is_mdev_switchdev_mode(struct mlx5_core_dev *dev)
{
return mlx5_eswitch_mode(dev) == MLX5_ESWITCH_OFFLOADS;
}
#endif
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