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 <net/switchdev.h>
  45
  46 #include "core.h"
  47
  48 #define MLXSW_SP_VFID_BASE VLAN_N_VID
  49 #define MLXSW_SP_LAG_MAX 64
  50 #define MLXSW_SP_PORT_PER_LAG_MAX 16
  51
  52 struct mlxsw_sp_port;
  53
  54 struct mlxsw_sp_upper {
  55         struct net_device *dev;
  56         unsigned int ref_count;
  57 };
  58
  59 struct mlxsw_sp {
  60         unsigned long active_vfids[BITS_TO_LONGS(VLAN_N_VID)];
  61         unsigned long active_fids[BITS_TO_LONGS(VLAN_N_VID)];
  62         struct mlxsw_sp_port **ports;
  63         struct mlxsw_core *core;
  64         const struct mlxsw_bus_info *bus_info;
  65         unsigned char base_mac[ETH_ALEN];
  66         struct {
  67                 struct delayed_work dw;
  68 #define MLXSW_SP_DEFAULT_LEARNING_INTERVAL 100
  69                 unsigned int interval; /* ms */
  70         } fdb_notify;
  71 #define MLXSW_SP_DEFAULT_AGEING_TIME 300
  72         u32 ageing_time;
  73         struct mlxsw_sp_upper master_bridge;
  74         struct mlxsw_sp_upper lags[MLXSW_SP_LAG_MAX];
  75 };
  76
  77 static inline struct mlxsw_sp_upper *
  78 mlxsw_sp_lag_get(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
  79 {
  80         return &mlxsw_sp->lags[lag_id];
  81 }
  82
  83 struct mlxsw_sp_port_pcpu_stats {
  84         u64                     rx_packets;
  85         u64                     rx_bytes;
  86         u64                     tx_packets;
  87         u64                     tx_bytes;
  88         struct u64_stats_sync   syncp;
  89         u32                     tx_dropped;
  90 };
  91
  92 struct mlxsw_sp_port {
  93         struct net_device *dev;
  94         struct mlxsw_sp_port_pcpu_stats __percpu *pcpu_stats;
  95         struct mlxsw_sp *mlxsw_sp;
  96         u8 local_port;
  97         u8 stp_state;
  98         u8 learning:1,
  99            learning_sync:1,
 100            uc_flood:1,
 101            bridged:1,
 102            lagged:1;
 103         u16 pvid;
 104         u16 lag_id;
 105         /* 802.1Q bridge VLANs */
 106         unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
 107         /* VLAN interfaces */
 108         unsigned long active_vfids[BITS_TO_LONGS(VLAN_N_VID)];
 109         u16 nr_vfids;
 110 };
 111
 112 static inline struct mlxsw_sp_port *
 113 mlxsw_sp_port_lagged_get(struct mlxsw_sp *mlxsw_sp, u16 lag_id, u8 port_index)
 114 {
 115         struct mlxsw_sp_port *mlxsw_sp_port;
 116         u8 local_port;
 117
 118         local_port = mlxsw_core_lag_mapping_get(mlxsw_sp->core,
 119                                                 lag_id, port_index);
 120         mlxsw_sp_port = mlxsw_sp->ports[local_port];
 121         return mlxsw_sp_port && mlxsw_sp_port->lagged ? mlxsw_sp_port : NULL;
 122 }
 123
 124 enum mlxsw_sp_flood_table {
 125         MLXSW_SP_FLOOD_TABLE_UC,
 126         MLXSW_SP_FLOOD_TABLE_BM,
 127 };
 128
 129 int mlxsw_sp_buffers_init(struct mlxsw_sp *mlxsw_sp);
 130 int mlxsw_sp_port_buffers_init(struct mlxsw_sp_port *mlxsw_sp_port);
 131
 132 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp);
 133 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp);
 134 int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port);
 135 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port);
 136 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port);
 137 int mlxsw_sp_port_vid_to_fid_set(struct mlxsw_sp_port *mlxsw_sp_port,
 138                                  enum mlxsw_reg_svfa_mt mt, bool valid, u16 fid,
 139                                  u16 vid);
 140 int mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid_begin,
 141                            u16 vid_end, bool is_member, bool untagged);
 142 int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
 143                           u16 vid);
 144 int mlxsw_sp_port_kill_vid(struct net_device *dev,
 145                            __be16 __always_unused proto, u16 vid);
 146
 147 #endif