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|
/*
* drivers/net/ethernet/mellanox/mlxsw/spectrum.h
* Copyright (c) 2015 Mellanox Technologies. All rights reserved.
* Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com>
* Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com>
* Copyright (c) 2015 Elad Raz <eladr@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _MLXSW_SPECTRUM_H
#define _MLXSW_SPECTRUM_H
#include <linux/types.h>
#include <linux/netdevice.h>
#include <linux/rhashtable.h>
#include <linux/bitops.h>
#include <linux/if_vlan.h>
#include <linux/list.h>
#include <linux/dcbnl.h>
#include <linux/in6.h>
#include <net/switchdev.h>
#include "port.h"
#include "core.h"
#define MLXSW_SP_VFID_BASE VLAN_N_VID
#define MLXSW_SP_VFID_MAX 6656 /* Bridged VLAN interfaces */
#define MLXSW_SP_RFID_BASE 15360
#define MLXSW_SP_RIF_MAX 800
#define MLXSW_SP_LAG_MAX 64
#define MLXSW_SP_PORT_PER_LAG_MAX 16
#define MLXSW_SP_MID_MAX 7000
#define MLXSW_SP_PORTS_PER_CLUSTER_MAX 4
#define MLXSW_SP_LPM_TREE_MIN 2 /* trees 0 and 1 are reserved */
#define MLXSW_SP_LPM_TREE_MAX 22
#define MLXSW_SP_LPM_TREE_COUNT (MLXSW_SP_LPM_TREE_MAX - MLXSW_SP_LPM_TREE_MIN)
#define MLXSW_SP_VIRTUAL_ROUTER_MAX 256
#define MLXSW_SP_PORT_BASE_SPEED 25000 /* Mb/s */
#define MLXSW_SP_BYTES_PER_CELL 96
#define MLXSW_SP_BYTES_TO_CELLS(b) DIV_ROUND_UP(b, MLXSW_SP_BYTES_PER_CELL)
#define MLXSW_SP_CELLS_TO_BYTES(c) (c * MLXSW_SP_BYTES_PER_CELL)
#define MLXSW_SP_KVD_LINEAR_SIZE 65536 /* entries */
#define MLXSW_SP_KVD_HASH_SINGLE_SIZE 163840 /* entries */
#define MLXSW_SP_KVD_HASH_DOUBLE_SIZE 32768 /* entries */
/* Maximum delay buffer needed in case of PAUSE frames, in cells.
* Assumes 100m cable and maximum MTU.
*/
#define MLXSW_SP_PAUSE_DELAY 612
#define MLXSW_SP_CELL_FACTOR 2 /* 2 * cell_size / (IPG + cell_size + 1) */
static inline u16 mlxsw_sp_pfc_delay_get(int mtu, u16 delay)
{
delay = MLXSW_SP_BYTES_TO_CELLS(DIV_ROUND_UP(delay, BITS_PER_BYTE));
return MLXSW_SP_CELL_FACTOR * delay + MLXSW_SP_BYTES_TO_CELLS(mtu);
}
struct mlxsw_sp_port;
struct mlxsw_sp_upper {
struct net_device *dev;
unsigned int ref_count;
};
struct mlxsw_sp_fid {
void (*leave)(struct mlxsw_sp_port *mlxsw_sp_vport);
struct list_head list;
unsigned int ref_count;
struct net_device *dev;
struct mlxsw_sp_rif *r;
u16 fid;
};
struct mlxsw_sp_rif {
struct net_device *dev;
unsigned int ref_count;
struct mlxsw_sp_fid *f;
unsigned char addr[ETH_ALEN];
int mtu;
u16 rif;
};
struct mlxsw_sp_mid {
struct list_head list;
unsigned char addr[ETH_ALEN];
u16 vid;
u16 mid;
unsigned int ref_count;
};
static inline u16 mlxsw_sp_vfid_to_fid(u16 vfid)
{
return MLXSW_SP_VFID_BASE + vfid;
}
static inline u16 mlxsw_sp_fid_to_vfid(u16 fid)
{
return fid - MLXSW_SP_VFID_BASE;
}
static inline bool mlxsw_sp_fid_is_vfid(u16 fid)
{
return fid >= MLXSW_SP_VFID_BASE && fid < MLXSW_SP_RFID_BASE;
}
static inline bool mlxsw_sp_fid_is_rfid(u16 fid)
{
return fid >= MLXSW_SP_RFID_BASE;
}
static inline u16 mlxsw_sp_rif_sp_to_fid(u16 rif)
{
return MLXSW_SP_RFID_BASE + rif;
}
struct mlxsw_sp_sb_pr {
enum mlxsw_reg_sbpr_mode mode;
u32 size;
};
struct mlxsw_cp_sb_occ {
u32 cur;
u32 max;
};
struct mlxsw_sp_sb_cm {
u32 min_buff;
u32 max_buff;
u8 pool;
struct mlxsw_cp_sb_occ occ;
};
struct mlxsw_sp_sb_pm {
u32 min_buff;
u32 max_buff;
struct mlxsw_cp_sb_occ occ;
};
#define MLXSW_SP_SB_POOL_COUNT 4
#define MLXSW_SP_SB_TC_COUNT 8
struct mlxsw_sp_sb {
struct mlxsw_sp_sb_pr prs[2][MLXSW_SP_SB_POOL_COUNT];
struct {
struct mlxsw_sp_sb_cm cms[2][MLXSW_SP_SB_TC_COUNT];
struct mlxsw_sp_sb_pm pms[2][MLXSW_SP_SB_POOL_COUNT];
} ports[MLXSW_PORT_MAX_PORTS];
};
#define MLXSW_SP_PREFIX_COUNT (sizeof(struct in6_addr) * BITS_PER_BYTE)
struct mlxsw_sp_prefix_usage {
DECLARE_BITMAP(b, MLXSW_SP_PREFIX_COUNT);
};
enum mlxsw_sp_l3proto {
MLXSW_SP_L3_PROTO_IPV4,
MLXSW_SP_L3_PROTO_IPV6,
};
struct mlxsw_sp_lpm_tree {
u8 id; /* tree ID */
unsigned int ref_count;
enum mlxsw_sp_l3proto proto;
struct mlxsw_sp_prefix_usage prefix_usage;
};
struct mlxsw_sp_fib;
struct mlxsw_sp_vr {
u16 id; /* virtual router ID */
bool used;
enum mlxsw_sp_l3proto proto;
u32 tb_id; /* kernel fib table id */
struct mlxsw_sp_lpm_tree *lpm_tree;
struct mlxsw_sp_fib *fib;
};
struct mlxsw_sp_router {
struct mlxsw_sp_lpm_tree lpm_trees[MLXSW_SP_LPM_TREE_COUNT];
struct mlxsw_sp_vr vrs[MLXSW_SP_VIRTUAL_ROUTER_MAX];
struct rhashtable neigh_ht;
struct {
struct delayed_work dw;
unsigned long interval; /* ms */
} neighs_update;
struct delayed_work nexthop_probe_dw;
#define MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL 5000 /* ms */
struct list_head nexthop_group_list;
struct list_head nexthop_neighs_list;
};
struct mlxsw_sp {
struct {
struct list_head list;
DECLARE_BITMAP(mapped, MLXSW_SP_VFID_MAX);
} vfids;
struct {
struct list_head list;
DECLARE_BITMAP(mapped, MLXSW_SP_MID_MAX);
} br_mids;
struct list_head fids; /* VLAN-aware bridge FIDs */
struct mlxsw_sp_rif *rifs[MLXSW_SP_RIF_MAX];
struct mlxsw_sp_port **ports;
struct mlxsw_core *core;
const struct mlxsw_bus_info *bus_info;
unsigned char base_mac[ETH_ALEN];
struct {
struct delayed_work dw;
#define MLXSW_SP_DEFAULT_LEARNING_INTERVAL 100
unsigned int interval; /* ms */
} fdb_notify;
#define MLXSW_SP_MIN_AGEING_TIME 10
#define MLXSW_SP_MAX_AGEING_TIME 1000000
#define MLXSW_SP_DEFAULT_AGEING_TIME 300
u32 ageing_time;
struct mlxsw_sp_upper master_bridge;
struct mlxsw_sp_upper lags[MLXSW_SP_LAG_MAX];
u8 port_to_module[MLXSW_PORT_MAX_PORTS];
struct mlxsw_sp_sb sb;
struct mlxsw_sp_router router;
struct {
DECLARE_BITMAP(usage, MLXSW_SP_KVD_LINEAR_SIZE);
} kvdl;
};
static inline struct mlxsw_sp_upper *
mlxsw_sp_lag_get(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
{
return &mlxsw_sp->lags[lag_id];
}
struct mlxsw_sp_port_pcpu_stats {
u64 rx_packets;
u64 rx_bytes;
u64 tx_packets;
u64 tx_bytes;
struct u64_stats_sync syncp;
u32 tx_dropped;
};
struct mlxsw_sp_port {
struct mlxsw_core_port core_port; /* must be first */
struct net_device *dev;
struct mlxsw_sp_port_pcpu_stats __percpu *pcpu_stats;
struct mlxsw_sp *mlxsw_sp;
u8 local_port;
u8 stp_state;
u8 learning:1,
learning_sync:1,
uc_flood:1,
bridged:1,
lagged:1,
split:1;
u16 pvid;
u16 lag_id;
struct {
struct list_head list;
struct mlxsw_sp_fid *f;
u16 vid;
} vport;
struct {
u8 tx_pause:1,
rx_pause:1;
} link;
struct {
struct ieee_ets *ets;
struct ieee_maxrate *maxrate;
struct ieee_pfc *pfc;
} dcb;
struct {
u8 module;
u8 width;
u8 lane;
} mapping;
/* 802.1Q bridge VLANs */
unsigned long *active_vlans;
unsigned long *untagged_vlans;
/* VLAN interfaces */
struct list_head vports_list;
};
struct mlxsw_sp_port *mlxsw_sp_port_lower_dev_hold(struct net_device *dev);
void mlxsw_sp_port_dev_put(struct mlxsw_sp_port *mlxsw_sp_port);
static inline bool
mlxsw_sp_port_is_pause_en(const struct mlxsw_sp_port *mlxsw_sp_port)
{
return mlxsw_sp_port->link.tx_pause || mlxsw_sp_port->link.rx_pause;
}
static inline struct mlxsw_sp_port *
mlxsw_sp_port_lagged_get(struct mlxsw_sp *mlxsw_sp, u16 lag_id, u8 port_index)
{
struct mlxsw_sp_port *mlxsw_sp_port;
u8 local_port;
local_port = mlxsw_core_lag_mapping_get(mlxsw_sp->core,
lag_id, port_index);
mlxsw_sp_port = mlxsw_sp->ports[local_port];
return mlxsw_sp_port && mlxsw_sp_port->lagged ? mlxsw_sp_port : NULL;
}
static inline u16
mlxsw_sp_vport_vid_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
{
return mlxsw_sp_vport->vport.vid;
}
static inline bool
mlxsw_sp_port_is_vport(const struct mlxsw_sp_port *mlxsw_sp_port)
{
u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
return vid != 0;
}
static inline void mlxsw_sp_vport_fid_set(struct mlxsw_sp_port *mlxsw_sp_vport,
struct mlxsw_sp_fid *f)
{
mlxsw_sp_vport->vport.f = f;
}
static inline struct mlxsw_sp_fid *
mlxsw_sp_vport_fid_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
{
return mlxsw_sp_vport->vport.f;
}
static inline struct net_device *
mlxsw_sp_vport_dev_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
{
struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
return f ? f->dev : NULL;
}
static inline struct mlxsw_sp_port *
mlxsw_sp_port_vport_find(const struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
{
struct mlxsw_sp_port *mlxsw_sp_vport;
list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
vport.list) {
if (mlxsw_sp_vport_vid_get(mlxsw_sp_vport) == vid)
return mlxsw_sp_vport;
}
return NULL;
}
static inline struct mlxsw_sp_port *
mlxsw_sp_port_vport_find_by_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
u16 fid)
{
struct mlxsw_sp_port *mlxsw_sp_vport;
list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
vport.list) {
struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
if (f && f->fid == fid)
return mlxsw_sp_vport;
}
return NULL;
}
static inline struct mlxsw_sp_fid *mlxsw_sp_fid_find(struct mlxsw_sp *mlxsw_sp,
u16 fid)
{
struct mlxsw_sp_fid *f;
list_for_each_entry(f, &mlxsw_sp->fids, list)
if (f->fid == fid)
return f;
return NULL;
}
static inline struct mlxsw_sp_fid *
mlxsw_sp_vfid_find(const struct mlxsw_sp *mlxsw_sp,
const struct net_device *br_dev)
{
struct mlxsw_sp_fid *f;
list_for_each_entry(f, &mlxsw_sp->vfids.list, list)
if (f->dev == br_dev)
return f;
return NULL;
}
static inline struct mlxsw_sp_rif *
mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp,
const struct net_device *dev)
{
int i;
for (i = 0; i < MLXSW_SP_RIF_MAX; i++)
if (mlxsw_sp->rifs[i] && mlxsw_sp->rifs[i]->dev == dev)
return mlxsw_sp->rifs[i];
return NULL;
}
enum mlxsw_sp_flood_table {
MLXSW_SP_FLOOD_TABLE_UC,
MLXSW_SP_FLOOD_TABLE_BM,
};
int mlxsw_sp_buffers_init(struct mlxsw_sp *mlxsw_sp);
void mlxsw_sp_buffers_fini(struct mlxsw_sp *mlxsw_sp);
int mlxsw_sp_port_buffers_init(struct mlxsw_sp_port *mlxsw_sp_port);
int mlxsw_sp_sb_pool_get(struct mlxsw_core *mlxsw_core,
unsigned int sb_index, u16 pool_index,
struct devlink_sb_pool_info *pool_info);
int mlxsw_sp_sb_pool_set(struct mlxsw_core *mlxsw_core,
unsigned int sb_index, u16 pool_index, u32 size,
enum devlink_sb_threshold_type threshold_type);
int mlxsw_sp_sb_port_pool_get(struct mlxsw_core_port *mlxsw_core_port,
unsigned int sb_index, u16 pool_index,
u32 *p_threshold);
int mlxsw_sp_sb_port_pool_set(struct mlxsw_core_port *mlxsw_core_port,
unsigned int sb_index, u16 pool_index,
u32 threshold);
int mlxsw_sp_sb_tc_pool_bind_get(struct mlxsw_core_port *mlxsw_core_port,
unsigned int sb_index, u16 tc_index,
enum devlink_sb_pool_type pool_type,
u16 *p_pool_index, u32 *p_threshold);
int mlxsw_sp_sb_tc_pool_bind_set(struct mlxsw_core_port *mlxsw_core_port,
unsigned int sb_index, u16 tc_index,
enum devlink_sb_pool_type pool_type,
u16 pool_index, u32 threshold);
int mlxsw_sp_sb_occ_snapshot(struct mlxsw_core *mlxsw_core,
unsigned int sb_index);
int mlxsw_sp_sb_occ_max_clear(struct mlxsw_core *mlxsw_core,
unsigned int sb_index);
int mlxsw_sp_sb_occ_port_pool_get(struct mlxsw_core_port *mlxsw_core_port,
unsigned int sb_index, u16 pool_index,
u32 *p_cur, u32 *p_max);
int mlxsw_sp_sb_occ_tc_port_bind_get(struct mlxsw_core_port *mlxsw_core_port,
unsigned int sb_index, u16 tc_index,
enum devlink_sb_pool_type pool_type,
u32 *p_cur, u32 *p_max);
int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp);
void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp);
int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port);
void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port);
void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port);
int mlxsw_sp_port_vid_to_fid_set(struct mlxsw_sp_port *mlxsw_sp_port,
enum mlxsw_reg_svfa_mt mt, bool valid, u16 fid,
u16 vid);
int mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid_begin,
u16 vid_end, bool is_member, bool untagged);
int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
u16 vid);
int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
bool set);
void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port);
int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid);
int mlxsw_sp_port_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid);
int mlxsw_sp_rif_fdb_op(struct mlxsw_sp *mlxsw_sp, const char *mac, u16 fid,
bool adding);
struct mlxsw_sp_fid *mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp, u16 fid);
void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_fid *f);
void mlxsw_sp_rif_bridge_destroy(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_rif *r);
int mlxsw_sp_port_ets_set(struct mlxsw_sp_port *mlxsw_sp_port,
enum mlxsw_reg_qeec_hr hr, u8 index, u8 next_index,
bool dwrr, u8 dwrr_weight);
int mlxsw_sp_port_prio_tc_set(struct mlxsw_sp_port *mlxsw_sp_port,
u8 switch_prio, u8 tclass);
int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port, int mtu,
u8 *prio_tc, bool pause_en,
struct ieee_pfc *my_pfc);
int mlxsw_sp_port_ets_maxrate_set(struct mlxsw_sp_port *mlxsw_sp_port,
enum mlxsw_reg_qeec_hr hr, u8 index,
u8 next_index, u32 maxrate);
#ifdef CONFIG_MLXSW_SPECTRUM_DCB
int mlxsw_sp_port_dcb_init(struct mlxsw_sp_port *mlxsw_sp_port);
void mlxsw_sp_port_dcb_fini(struct mlxsw_sp_port *mlxsw_sp_port);
#else
static inline int mlxsw_sp_port_dcb_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
return 0;
}
static inline void mlxsw_sp_port_dcb_fini(struct mlxsw_sp_port *mlxsw_sp_port)
{}
#endif
int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp);
void mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp);
int mlxsw_sp_router_fib4_add(struct mlxsw_sp_port *mlxsw_sp_port,
const struct switchdev_obj_ipv4_fib *fib4,
struct switchdev_trans *trans);
int mlxsw_sp_router_fib4_del(struct mlxsw_sp_port *mlxsw_sp_port,
const struct switchdev_obj_ipv4_fib *fib4);
int mlxsw_sp_router_neigh_construct(struct net_device *dev,
struct neighbour *n);
void mlxsw_sp_router_neigh_destroy(struct net_device *dev,
struct neighbour *n);
int mlxsw_sp_kvdl_alloc(struct mlxsw_sp *mlxsw_sp, unsigned int entry_count);
void mlxsw_sp_kvdl_free(struct mlxsw_sp *mlxsw_sp, int entry_index);
#endif
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