drivers/net/ethernet/mellanox/mlx5/core/eswitch.h

   1 /*
   2  * Copyright (c) 2015, Mellanox Technologies, Ltd.  All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #ifndef __MLX5_ESWITCH_H__
  34 #define __MLX5_ESWITCH_H__
  35
  36 #include <linux/if_ether.h>
  37 #include <linux/if_link.h>
  38 #include <net/devlink.h>
  39 #include <linux/mlx5/device.h>
  40
  41 #define MLX5_MAX_UC_PER_VPORT(dev) \
  42         (1 << MLX5_CAP_GEN(dev, log_max_current_uc_list))
  43
  44 #define MLX5_MAX_MC_PER_VPORT(dev) \
  45         (1 << MLX5_CAP_GEN(dev, log_max_current_mc_list))
  46
  47 #define MLX5_L2_ADDR_HASH_SIZE (BIT(BITS_PER_BYTE))
  48 #define MLX5_L2_ADDR_HASH(addr) (addr[5])
  49
  50 #define FDB_UPLINK_VPORT 0xffff
  51
  52 /* L2 -mac address based- hash helpers */
  53 struct l2addr_node {
  54         struct hlist_node hlist;
  55         u8                addr[ETH_ALEN];
  56 };
  57
  58 #define for_each_l2hash_node(hn, tmp, hash, i) \
  59         for (i = 0; i < MLX5_L2_ADDR_HASH_SIZE; i++) \
  60                 hlist_for_each_entry_safe(hn, tmp, &hash[i], hlist)
  61
  62 #define l2addr_hash_find(hash, mac, type) ({                \
  63         int ix = MLX5_L2_ADDR_HASH(mac);                    \
  64         bool found = false;                                 \
  65         type *ptr = NULL;                                   \
  66                                                             \
  67         hlist_for_each_entry(ptr, &hash[ix], node.hlist)    \
  68                 if (ether_addr_equal(ptr->node.addr, mac)) {\
  69                         found = true;                       \
  70                         break;                              \
  71                 }                                           \
  72         if (!found)                                         \
  73                 ptr = NULL;                                 \
  74         ptr;                                                \
  75 })
  76
  77 #define l2addr_hash_add(hash, mac, type, gfp) ({            \
  78         int ix = MLX5_L2_ADDR_HASH(mac);                    \
  79         type *ptr = NULL;                                   \
  80                                                             \
  81         ptr = kzalloc(sizeof(type), gfp);                   \
  82         if (ptr) {                                          \
  83                 ether_addr_copy(ptr->node.addr, mac);       \
  84                 hlist_add_head(&ptr->node.hlist, &hash[ix]);\
  85         }                                                   \
  86         ptr;                                                \
  87 })
  88
  89 #define l2addr_hash_del(ptr) ({                             \
  90         hlist_del(&ptr->node.hlist);                        \
  91         kfree(ptr);                                         \
  92 })
  93
  94 struct vport_ingress {
  95         struct mlx5_flow_table *acl;
  96         struct mlx5_flow_group *allow_untagged_spoofchk_grp;
  97         struct mlx5_flow_group *allow_spoofchk_only_grp;
  98         struct mlx5_flow_group *allow_untagged_only_grp;
  99         struct mlx5_flow_group *drop_grp;
 100         struct mlx5_flow_rule  *allow_rule;
 101         struct mlx5_flow_rule  *drop_rule;
 102 };
 103
 104 struct vport_egress {
 105         struct mlx5_flow_table *acl;
 106         struct mlx5_flow_group *allowed_vlans_grp;
 107         struct mlx5_flow_group *drop_grp;
 108         struct mlx5_flow_rule  *allowed_vlan;
 109         struct mlx5_flow_rule  *drop_rule;
 110 };
 111
 112 struct mlx5_vport_info {
 113         u8                      mac[ETH_ALEN];
 114         u16                     vlan;
 115         u8                      qos;
 116         u64                     node_guid;
 117         int                     link_state;
 118         bool                    spoofchk;
 119         bool                    trusted;
 120 };
 121
 122 struct mlx5_vport {
 123         struct mlx5_core_dev    *dev;
 124         int                     vport;
 125         struct hlist_head       uc_list[MLX5_L2_ADDR_HASH_SIZE];
 126         struct hlist_head       mc_list[MLX5_L2_ADDR_HASH_SIZE];
 127         struct mlx5_flow_rule   *promisc_rule;
 128         struct mlx5_flow_rule   *allmulti_rule;
 129         struct work_struct      vport_change_handler;
 130
 131         struct vport_ingress    ingress;
 132         struct vport_egress     egress;
 133
 134         struct mlx5_vport_info  info;
 135
 136         bool                    enabled;
 137         u16                     enabled_events;
 138 };
 139
 140 struct mlx5_l2_table {
 141         struct hlist_head l2_hash[MLX5_L2_ADDR_HASH_SIZE];
 142         u32                  size;
 143         unsigned long        *bitmap;
 144 };
 145
 146 struct mlx5_eswitch_fdb {
 147         void *fdb;
 148         union {
 149                 struct legacy_fdb {
 150                         struct mlx5_flow_group *addr_grp;
 151                         struct mlx5_flow_group *allmulti_grp;
 152                         struct mlx5_flow_group *promisc_grp;
 153                 } legacy;
 154
 155                 struct offloads_fdb {
 156                         struct mlx5_flow_table *fdb;
 157                         struct mlx5_flow_group *send_to_vport_grp;
 158                         struct mlx5_flow_group *miss_grp;
 159                         struct mlx5_flow_rule  *miss_rule;
 160                 } offloads;
 161         };
 162 };
 163
 164 enum {
 165         SRIOV_NONE,
 166         SRIOV_LEGACY,
 167         SRIOV_OFFLOADS
 168 };
 169
 170 struct mlx5_esw_sq {
 171         struct mlx5_flow_rule   *send_to_vport_rule;
 172         struct list_head         list;
 173 };
 174
 175 struct mlx5_eswitch_rep {
 176         int                    (*load)(struct mlx5_eswitch *esw,
 177                                        struct mlx5_eswitch_rep *rep);
 178         void                   (*unload)(struct mlx5_eswitch *esw,
 179                                          struct mlx5_eswitch_rep *rep);
 180         u16                    vport;
 181         struct mlx5_flow_rule *vport_rx_rule;
 182         void                  *priv_data;
 183         struct list_head       vport_sqs_list;
 184         bool                   valid;
 185         u8                     hw_id[ETH_ALEN];
 186 };
 187
 188 struct mlx5_esw_offload {
 189         struct mlx5_flow_table *ft_offloads;
 190         struct mlx5_flow_group *vport_rx_group;
 191         struct mlx5_eswitch_rep *vport_reps;
 192 };
 193
 194 struct mlx5_eswitch {
 195         struct mlx5_core_dev    *dev;
 196         struct mlx5_l2_table    l2_table;
 197         struct mlx5_eswitch_fdb fdb_table;
 198         struct hlist_head       mc_table[MLX5_L2_ADDR_HASH_SIZE];
 199         struct workqueue_struct *work_queue;
 200         struct mlx5_vport       *vports;
 201         int                     total_vports;
 202         int                     enabled_vports;
 203         /* Synchronize between vport change events
 204          * and async SRIOV admin state changes
 205          */
 206         struct mutex            state_lock;
 207         struct esw_mc_addr      *mc_promisc;
 208         struct mlx5_esw_offload offloads;
 209         int                     mode;
 210 };
 211
 212 /* E-Switch API */
 213 int mlx5_eswitch_init(struct mlx5_core_dev *dev);
 214 void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw);
 215 void mlx5_eswitch_attach(struct mlx5_eswitch *esw);
 216 void mlx5_eswitch_detach(struct mlx5_eswitch *esw);
 217 void mlx5_eswitch_vport_event(struct mlx5_eswitch *esw, struct mlx5_eqe *eqe);
 218 int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs, int mode);
 219 void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw);
 220 int mlx5_eswitch_set_vport_mac(struct mlx5_eswitch *esw,
 221                                int vport, u8 mac[ETH_ALEN]);
 222 int mlx5_eswitch_set_vport_state(struct mlx5_eswitch *esw,
 223                                  int vport, int link_state);
 224 int mlx5_eswitch_set_vport_vlan(struct mlx5_eswitch *esw,
 225                                 int vport, u16 vlan, u8 qos);
 226 int mlx5_eswitch_set_vport_spoofchk(struct mlx5_eswitch *esw,
 227                                     int vport, bool spoofchk);
 228 int mlx5_eswitch_set_vport_trust(struct mlx5_eswitch *esw,
 229                                  int vport_num, bool setting);
 230 int mlx5_eswitch_get_vport_config(struct mlx5_eswitch *esw,
 231                                   int vport, struct ifla_vf_info *ivi);
 232 int mlx5_eswitch_get_vport_stats(struct mlx5_eswitch *esw,
 233                                  int vport,
 234                                  struct ifla_vf_stats *vf_stats);
 235
 236 struct mlx5_flow_spec;
 237
 238 struct mlx5_flow_rule *
 239 mlx5_eswitch_add_offloaded_rule(struct mlx5_eswitch *esw,
 240                                 struct mlx5_flow_spec *spec,
 241                                 u32 action, u32 src_vport, u32 dst_vport);
 242 struct mlx5_flow_rule *
 243 mlx5_eswitch_create_vport_rx_rule(struct mlx5_eswitch *esw, int vport, u32 tirn);
 244
 245 int mlx5_eswitch_sqs2vport_start(struct mlx5_eswitch *esw,
 246                                  struct mlx5_eswitch_rep *rep,
 247                                  u16 *sqns_array, int sqns_num);
 248 void mlx5_eswitch_sqs2vport_stop(struct mlx5_eswitch *esw,
 249                                  struct mlx5_eswitch_rep *rep);
 250
 251 int mlx5_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode);
 252 int mlx5_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode);
 253 void mlx5_eswitch_register_vport_rep(struct mlx5_eswitch *esw,
 254                                      struct mlx5_eswitch_rep *rep);
 255 void mlx5_eswitch_unregister_vport_rep(struct mlx5_eswitch *esw,
 256                                        int vport);
 257
 258 #define MLX5_DEBUG_ESWITCH_MASK BIT(3)
 259
 260 #define esw_info(dev, format, ...)                              \
 261         pr_info("(%s): E-Switch: " format, (dev)->priv.name, ##__VA_ARGS__)
 262
 263 #define esw_warn(dev, format, ...)                              \
 264         pr_warn("(%s): E-Switch: " format, (dev)->priv.name, ##__VA_ARGS__)
 265
 266 #define esw_debug(dev, format, ...)                             \
 267         mlx5_core_dbg_mask(dev, MLX5_DEBUG_ESWITCH_MASK, format, ##__VA_ARGS__)
 268 #endif /* __MLX5_ESWITCH_H__ */