drivers/net/ethernet/mellanox/mlxsw/spectrum.h

   1 /*
   2  * drivers/net/ethernet/mellanox/mlxsw/spectrum.h
   3  * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
   4  * Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com>
   5  * Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com>
   6  * Copyright (c) 2015 Elad Raz <eladr@mellanox.com>
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the names of the copyright holders nor the names of its
  17  *    contributors may be used to endorse or promote products derived from
  18  *    this software without specific prior written permission.
  19  *
  20  * Alternatively, this software may be distributed under the terms of the
  21  * GNU General Public License ("GPL") version 2 as published by the Free
  22  * Software Foundation.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  25  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  28  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  29  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  30  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  31  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  32  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  33  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  34  * POSSIBILITY OF SUCH DAMAGE.
  35  */
  36
  37 #ifndef _MLXSW_SPECTRUM_H
  38 #define _MLXSW_SPECTRUM_H
  39
  40 #include <linux/types.h>
  41 #include <linux/netdevice.h>
  42 #include <linux/bitops.h>
  43 #include <linux/if_vlan.h>
  44 #include <linux/list.h>
  45 #include <net/switchdev.h>
  46 #include <net/devlink.h>
  47
  48 #include "port.h"
  49 #include "core.h"
  50
  51 #define MLXSW_SP_VFID_BASE VLAN_N_VID
  52 #define MLXSW_SP_VFID_PORT_MAX 512      /* Non-bridged VLAN interfaces */
  53 #define MLXSW_SP_VFID_BR_MAX 6144       /* Bridged VLAN interfaces */
  54 #define MLXSW_SP_VFID_MAX (MLXSW_SP_VFID_PORT_MAX + MLXSW_SP_VFID_BR_MAX)
  55
  56 #define MLXSW_SP_LAG_MAX 64
  57 #define MLXSW_SP_PORT_PER_LAG_MAX 16
  58
  59 #define MLXSW_SP_MID_MAX 7000
  60
  61 #define MLXSW_SP_PORTS_PER_CLUSTER_MAX 4
  62
  63 #define MLXSW_SP_PORT_BASE_SPEED 25000  /* Mb/s */
  64
  65 #define MLXSW_SP_BYTES_PER_CELL 96
  66
  67 #define MLXSW_SP_BYTES_TO_CELLS(b) DIV_ROUND_UP(b, MLXSW_SP_BYTES_PER_CELL)
  68
  69 struct mlxsw_sp_port;
  70
  71 struct mlxsw_sp_upper {
  72         struct net_device *dev;
  73         unsigned int ref_count;
  74 };
  75
  76 struct mlxsw_sp_vfid {
  77         struct list_head list;
  78         u16 nr_vports;
  79         u16 vfid;       /* Starting at 0 */
  80         struct net_device *br_dev;
  81         u16 vid;
  82 };
  83
  84 struct mlxsw_sp_mid {
  85         struct list_head list;
  86         unsigned char addr[ETH_ALEN];
  87         u16 vid;
  88         u16 mid;
  89         unsigned int ref_count;
  90 };
  91
  92 static inline u16 mlxsw_sp_vfid_to_fid(u16 vfid)
  93 {
  94         return MLXSW_SP_VFID_BASE + vfid;
  95 }
  96
  97 static inline u16 mlxsw_sp_fid_to_vfid(u16 fid)
  98 {
  99         return fid - MLXSW_SP_VFID_BASE;
 100 }
 101
 102 static inline bool mlxsw_sp_fid_is_vfid(u16 fid)
 103 {
 104         return fid >= MLXSW_SP_VFID_BASE;
 105 }
 106
 107 struct mlxsw_sp {
 108         struct {
 109                 struct list_head list;
 110                 unsigned long mapped[BITS_TO_LONGS(MLXSW_SP_VFID_PORT_MAX)];
 111         } port_vfids;
 112         struct {
 113                 struct list_head list;
 114                 unsigned long mapped[BITS_TO_LONGS(MLXSW_SP_VFID_BR_MAX)];
 115         } br_vfids;
 116         struct {
 117                 struct list_head list;
 118                 unsigned long mapped[BITS_TO_LONGS(MLXSW_SP_MID_MAX)];
 119         } br_mids;
 120         unsigned long active_fids[BITS_TO_LONGS(VLAN_N_VID)];
 121         struct mlxsw_sp_port **ports;
 122         struct mlxsw_core *core;
 123         const struct mlxsw_bus_info *bus_info;
 124         unsigned char base_mac[ETH_ALEN];
 125         struct {
 126                 struct delayed_work dw;
 127 #define MLXSW_SP_DEFAULT_LEARNING_INTERVAL 100
 128                 unsigned int interval; /* ms */
 129         } fdb_notify;
 130 #define MLXSW_SP_MIN_AGEING_TIME 10
 131 #define MLXSW_SP_MAX_AGEING_TIME 1000000
 132 #define MLXSW_SP_DEFAULT_AGEING_TIME 300
 133         u32 ageing_time;
 134         struct mlxsw_sp_upper master_bridge;
 135         struct mlxsw_sp_upper lags[MLXSW_SP_LAG_MAX];
 136         u8 port_to_module[MLXSW_PORT_MAX_PORTS];
 137 };
 138
 139 static inline struct mlxsw_sp_upper *
 140 mlxsw_sp_lag_get(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
 141 {
 142         return &mlxsw_sp->lags[lag_id];
 143 }
 144
 145 struct mlxsw_sp_port_pcpu_stats {
 146         u64                     rx_packets;
 147         u64                     rx_bytes;
 148         u64                     tx_packets;
 149         u64                     tx_bytes;
 150         struct u64_stats_sync   syncp;
 151         u32                     tx_dropped;
 152 };
 153
 154 struct mlxsw_sp_port {
 155         struct net_device *dev;
 156         struct mlxsw_sp_port_pcpu_stats __percpu *pcpu_stats;
 157         struct mlxsw_sp *mlxsw_sp;
 158         u8 local_port;
 159         u8 stp_state;
 160         u8 learning:1,
 161            learning_sync:1,
 162            uc_flood:1,
 163            bridged:1,
 164            lagged:1,
 165            split:1;
 166         u16 pvid;
 167         u16 lag_id;
 168         struct {
 169                 struct list_head list;
 170                 struct mlxsw_sp_vfid *vfid;
 171                 u16 vid;
 172         } vport;
 173         /* 802.1Q bridge VLANs */
 174         unsigned long *active_vlans;
 175         unsigned long *untagged_vlans;
 176         /* VLAN interfaces */
 177         struct list_head vports_list;
 178         struct devlink_port devlink_port;
 179 };
 180
 181 static inline struct mlxsw_sp_port *
 182 mlxsw_sp_port_lagged_get(struct mlxsw_sp *mlxsw_sp, u16 lag_id, u8 port_index)
 183 {
 184         struct mlxsw_sp_port *mlxsw_sp_port;
 185         u8 local_port;
 186
 187         local_port = mlxsw_core_lag_mapping_get(mlxsw_sp->core,
 188                                                 lag_id, port_index);
 189         mlxsw_sp_port = mlxsw_sp->ports[local_port];
 190         return mlxsw_sp_port && mlxsw_sp_port->lagged ? mlxsw_sp_port : NULL;
 191 }
 192
 193 static inline bool
 194 mlxsw_sp_port_is_vport(const struct mlxsw_sp_port *mlxsw_sp_port)
 195 {
 196         return mlxsw_sp_port->vport.vfid;
 197 }
 198
 199 static inline struct net_device *
 200 mlxsw_sp_vport_br_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
 201 {
 202         return mlxsw_sp_vport->vport.vfid->br_dev;
 203 }
 204
 205 static inline u16
 206 mlxsw_sp_vport_vid_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
 207 {
 208         return mlxsw_sp_vport->vport.vid;
 209 }
 210
 211 static inline u16
 212 mlxsw_sp_vport_vfid_get(const struct mlxsw_sp_port *mlxsw_sp_vport)
 213 {
 214         return mlxsw_sp_vport->vport.vfid->vfid;
 215 }
 216
 217 static inline struct mlxsw_sp_port *
 218 mlxsw_sp_port_vport_find(const struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
 219 {
 220         struct mlxsw_sp_port *mlxsw_sp_vport;
 221
 222         list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
 223                             vport.list) {
 224                 if (mlxsw_sp_vport_vid_get(mlxsw_sp_vport) == vid)
 225                         return mlxsw_sp_vport;
 226         }
 227
 228         return NULL;
 229 }
 230
 231 static inline struct mlxsw_sp_port *
 232 mlxsw_sp_port_vport_find_by_vfid(const struct mlxsw_sp_port *mlxsw_sp_port,
 233                                  u16 vfid)
 234 {
 235         struct mlxsw_sp_port *mlxsw_sp_vport;
 236
 237         list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
 238                             vport.list) {
 239                 if (mlxsw_sp_vport_vfid_get(mlxsw_sp_vport) == vfid)
 240                         return mlxsw_sp_vport;
 241         }
 242
 243         return NULL;
 244 }
 245
 246 enum mlxsw_sp_flood_table {
 247         MLXSW_SP_FLOOD_TABLE_UC,
 248         MLXSW_SP_FLOOD_TABLE_BM,
 249 };
 250
 251 int mlxsw_sp_buffers_init(struct mlxsw_sp *mlxsw_sp);
 252 int mlxsw_sp_port_buffers_init(struct mlxsw_sp_port *mlxsw_sp_port);
 253
 254 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp);
 255 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp);
 256 int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port);
 257 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port);
 258 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port);
 259 int mlxsw_sp_port_vid_to_fid_set(struct mlxsw_sp_port *mlxsw_sp_port,
 260                                  enum mlxsw_reg_svfa_mt mt, bool valid, u16 fid,
 261                                  u16 vid);
 262 int mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid_begin,
 263                            u16 vid_end, bool is_member, bool untagged);
 264 int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
 265                           u16 vid);
 266 int mlxsw_sp_port_kill_vid(struct net_device *dev,
 267                            __be16 __always_unused proto, u16 vid);
 268 int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 vfid,
 269                              bool set, bool only_uc);
 270 void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port);
 271 int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid);
 272
 273 #ifdef CONFIG_MLXSW_SPECTRUM_DCB
 274
 275 int mlxsw_sp_port_dcb_init(struct mlxsw_sp_port *mlxsw_sp_port);
 276 void mlxsw_sp_port_dcb_fini(struct mlxsw_sp_port *mlxsw_sp_port);
 277
 278 #else
 279
 280 static inline int mlxsw_sp_port_dcb_init(struct mlxsw_sp_port *mlxsw_sp_port)
 281 {
 282         return 0;
 283 }
 284
 285 static inline void mlxsw_sp_port_dcb_fini(struct mlxsw_sp_port *mlxsw_sp_port)
 286 {}
 287
 288 #endif
 289
 290 #endif