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/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
/* Copyright (c) 2018 Mellanox Technologies. All rights reserved */
#ifndef _MLXSW_SPECTRUM_SPAN_H
#define _MLXSW_SPECTRUM_SPAN_H
#include <linux/types.h>
#include <linux/if_ether.h>
#include <linux/refcount.h>
#include "spectrum_router.h"
struct mlxsw_sp;
struct mlxsw_sp_port;
/* SPAN session identifiers that correspond to MLXSW_TRAP_ID_MIRROR_SESSION<i>
* trap identifiers. The session identifier is an attribute of the SPAN agent,
* which determines the trap identifier of packets that are mirrored to the
* CPU. Packets that are trapped to the CPU for the same logical reason (e.g.,
* buffer drops) should use the same session identifier.
*/
enum mlxsw_sp_span_session_id {
MLXSW_SP_SPAN_SESSION_ID_BUFFER,
MLXSW_SP_SPAN_SESSION_ID_SAMPLING,
__MLXSW_SP_SPAN_SESSION_ID_MAX = 8,
};
struct mlxsw_sp_span_parms {
struct mlxsw_sp_port *dest_port; /* NULL for unoffloaded SPAN. */
unsigned int ttl;
unsigned char dmac[ETH_ALEN];
unsigned char smac[ETH_ALEN];
union mlxsw_sp_l3addr daddr;
union mlxsw_sp_l3addr saddr;
u16 vid;
u16 policer_id;
bool policer_enable;
enum mlxsw_sp_span_session_id session_id;
};
enum mlxsw_sp_span_trigger {
MLXSW_SP_SPAN_TRIGGER_INGRESS,
MLXSW_SP_SPAN_TRIGGER_EGRESS,
MLXSW_SP_SPAN_TRIGGER_TAIL_DROP,
MLXSW_SP_SPAN_TRIGGER_EARLY_DROP,
MLXSW_SP_SPAN_TRIGGER_ECN,
};
struct mlxsw_sp_span_trigger_parms {
int span_id;
u32 probability_rate;
};
struct mlxsw_sp_span_agent_parms {
const struct net_device *to_dev;
u16 policer_id;
bool policer_enable;
enum mlxsw_sp_span_session_id session_id;
};
struct mlxsw_sp_span_entry_ops;
struct mlxsw_sp_span_ops {
int (*init)(struct mlxsw_sp *mlxsw_sp);
int (*policer_id_base_set)(struct mlxsw_sp *mlxsw_sp,
u16 policer_id_base);
};
struct mlxsw_sp_span_entry {
const struct net_device *to_dev;
const struct mlxsw_sp_span_entry_ops *ops;
struct mlxsw_sp_span_parms parms;
refcount_t ref_count;
int id;
};
struct mlxsw_sp_span_entry_ops {
bool is_static;
bool (*can_handle)(const struct net_device *to_dev);
int (*parms_set)(struct mlxsw_sp *mlxsw_sp,
const struct net_device *to_dev,
struct mlxsw_sp_span_parms *sparmsp);
int (*configure)(struct mlxsw_sp_span_entry *span_entry,
struct mlxsw_sp_span_parms sparms);
void (*deconfigure)(struct mlxsw_sp_span_entry *span_entry);
};
int mlxsw_sp_span_init(struct mlxsw_sp *mlxsw_sp);
void mlxsw_sp_span_fini(struct mlxsw_sp *mlxsw_sp);
void mlxsw_sp_span_respin(struct mlxsw_sp *mlxsw_sp);
struct mlxsw_sp_span_entry *
mlxsw_sp_span_entry_find_by_port(struct mlxsw_sp *mlxsw_sp,
const struct net_device *to_dev);
void mlxsw_sp_span_entry_invalidate(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_span_entry *span_entry);
int mlxsw_sp_span_agent_get(struct mlxsw_sp *mlxsw_sp, int *p_span_id,
const struct mlxsw_sp_span_agent_parms *parms);
void mlxsw_sp_span_agent_put(struct mlxsw_sp *mlxsw_sp, int span_id);
int mlxsw_sp_span_analyzed_port_get(struct mlxsw_sp_port *mlxsw_sp_port,
bool ingress);
void mlxsw_sp_span_analyzed_port_put(struct mlxsw_sp_port *mlxsw_sp_port,
bool ingress);
int mlxsw_sp_span_agent_bind(struct mlxsw_sp *mlxsw_sp,
enum mlxsw_sp_span_trigger trigger,
struct mlxsw_sp_port *mlxsw_sp_port,
const struct mlxsw_sp_span_trigger_parms *parms);
void
mlxsw_sp_span_agent_unbind(struct mlxsw_sp *mlxsw_sp,
enum mlxsw_sp_span_trigger trigger,
struct mlxsw_sp_port *mlxsw_sp_port,
const struct mlxsw_sp_span_trigger_parms *parms);
int mlxsw_sp_span_trigger_enable(struct mlxsw_sp_port *mlxsw_sp_port,
enum mlxsw_sp_span_trigger trigger, u8 tc);
void mlxsw_sp_span_trigger_disable(struct mlxsw_sp_port *mlxsw_sp_port,
enum mlxsw_sp_span_trigger trigger, u8 tc);
bool mlxsw_sp_span_trigger_is_ingress(enum mlxsw_sp_span_trigger trigger);
extern const struct mlxsw_sp_span_ops mlxsw_sp1_span_ops;
extern const struct mlxsw_sp_span_ops mlxsw_sp2_span_ops;
extern const struct mlxsw_sp_span_ops mlxsw_sp3_span_ops;
#endif
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