linux/include/linux/mlx5/fs.h
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   1/*
   2 * Copyright (c) 2015, Mellanox Technologies. 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_FS_
  34#define _MLX5_FS_
  35
  36#include <linux/mlx5/driver.h>
  37#include <linux/mlx5/mlx5_ifc.h>
  38
  39#define MLX5_FS_DEFAULT_FLOW_TAG 0x0
  40
  41enum {
  42        MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO  = 1 << 16,
  43        MLX5_FLOW_CONTEXT_ACTION_ENCRYPT        = 1 << 17,
  44        MLX5_FLOW_CONTEXT_ACTION_DECRYPT        = 1 << 18,
  45        MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_NS    = 1 << 19,
  46};
  47
  48enum {
  49        MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT = BIT(0),
  50        MLX5_FLOW_TABLE_TUNNEL_EN_DECAP = BIT(1),
  51        MLX5_FLOW_TABLE_TERMINATION = BIT(2),
  52        MLX5_FLOW_TABLE_UNMANAGED = BIT(3),
  53        MLX5_FLOW_TABLE_OTHER_VPORT = BIT(4),
  54};
  55
  56#define LEFTOVERS_RULE_NUM       2
  57static inline void build_leftovers_ft_param(int *priority,
  58                                            int *n_ent,
  59                                            int *n_grp)
  60{
  61        *priority = 0; /* Priority of leftovers_prio-0 */
  62        *n_ent = LEFTOVERS_RULE_NUM;
  63        *n_grp = LEFTOVERS_RULE_NUM;
  64}
  65
  66enum mlx5_flow_namespace_type {
  67        MLX5_FLOW_NAMESPACE_BYPASS,
  68        MLX5_FLOW_NAMESPACE_LAG,
  69        MLX5_FLOW_NAMESPACE_OFFLOADS,
  70        MLX5_FLOW_NAMESPACE_ETHTOOL,
  71        MLX5_FLOW_NAMESPACE_KERNEL,
  72        MLX5_FLOW_NAMESPACE_LEFTOVERS,
  73        MLX5_FLOW_NAMESPACE_ANCHOR,
  74        MLX5_FLOW_NAMESPACE_FDB,
  75        MLX5_FLOW_NAMESPACE_ESW_EGRESS,
  76        MLX5_FLOW_NAMESPACE_ESW_INGRESS,
  77        MLX5_FLOW_NAMESPACE_SNIFFER_RX,
  78        MLX5_FLOW_NAMESPACE_SNIFFER_TX,
  79        MLX5_FLOW_NAMESPACE_EGRESS,
  80        MLX5_FLOW_NAMESPACE_EGRESS_KERNEL,
  81        MLX5_FLOW_NAMESPACE_RDMA_RX,
  82        MLX5_FLOW_NAMESPACE_RDMA_RX_KERNEL,
  83        MLX5_FLOW_NAMESPACE_RDMA_TX,
  84};
  85
  86enum {
  87        FDB_BYPASS_PATH,
  88        FDB_TC_OFFLOAD,
  89        FDB_FT_OFFLOAD,
  90        FDB_SLOW_PATH,
  91        FDB_PER_VPORT,
  92};
  93
  94struct mlx5_pkt_reformat;
  95struct mlx5_modify_hdr;
  96struct mlx5_flow_table;
  97struct mlx5_flow_group;
  98struct mlx5_flow_namespace;
  99struct mlx5_flow_handle;
 100
 101enum {
 102        FLOW_CONTEXT_HAS_TAG = BIT(0),
 103};
 104
 105struct mlx5_flow_context {
 106        u32 flags;
 107        u32 flow_tag;
 108        u32 flow_source;
 109};
 110
 111struct mlx5_flow_spec {
 112        u8   match_criteria_enable;
 113        u32  match_criteria[MLX5_ST_SZ_DW(fte_match_param)];
 114        u32  match_value[MLX5_ST_SZ_DW(fte_match_param)];
 115        struct mlx5_flow_context flow_context;
 116};
 117
 118enum {
 119        MLX5_FLOW_DEST_VPORT_VHCA_ID      = BIT(0),
 120        MLX5_FLOW_DEST_VPORT_REFORMAT_ID  = BIT(1),
 121};
 122
 123struct mlx5_flow_destination {
 124        enum mlx5_flow_destination_type type;
 125        union {
 126                u32                     tir_num;
 127                u32                     ft_num;
 128                struct mlx5_flow_table  *ft;
 129                u32                     counter_id;
 130                struct {
 131                        u16             num;
 132                        u16             vhca_id;
 133                        struct mlx5_pkt_reformat *pkt_reformat;
 134                        u8              flags;
 135                } vport;
 136                u32                     sampler_id;
 137        };
 138};
 139
 140struct mod_hdr_tbl {
 141        struct mutex lock; /* protects hlist */
 142        DECLARE_HASHTABLE(hlist, 8);
 143};
 144
 145struct mlx5_flow_namespace *
 146mlx5_get_fdb_sub_ns(struct mlx5_core_dev *dev, int n);
 147struct mlx5_flow_namespace *
 148mlx5_get_flow_namespace(struct mlx5_core_dev *dev,
 149                        enum mlx5_flow_namespace_type type);
 150struct mlx5_flow_namespace *
 151mlx5_get_flow_vport_acl_namespace(struct mlx5_core_dev *dev,
 152                                  enum mlx5_flow_namespace_type type,
 153                                  int vport);
 154
 155struct mlx5_flow_table_attr {
 156        int prio;
 157        int max_fte;
 158        u32 level;
 159        u32 flags;
 160        struct mlx5_flow_table *next_ft;
 161
 162        struct {
 163                int max_num_groups;
 164                int num_reserved_entries;
 165        } autogroup;
 166};
 167
 168struct mlx5_flow_table *
 169mlx5_create_flow_table(struct mlx5_flow_namespace *ns,
 170                       struct mlx5_flow_table_attr *ft_attr);
 171
 172struct mlx5_flow_table *
 173mlx5_create_auto_grouped_flow_table(struct mlx5_flow_namespace *ns,
 174                                    struct mlx5_flow_table_attr *ft_attr);
 175
 176struct mlx5_flow_table *
 177mlx5_create_vport_flow_table(struct mlx5_flow_namespace *ns,
 178                             struct mlx5_flow_table_attr *ft_attr, u16 vport);
 179struct mlx5_flow_table *mlx5_create_lag_demux_flow_table(
 180                                               struct mlx5_flow_namespace *ns,
 181                                               int prio, u32 level);
 182int mlx5_destroy_flow_table(struct mlx5_flow_table *ft);
 183
 184/* inbox should be set with the following values:
 185 * start_flow_index
 186 * end_flow_index
 187 * match_criteria_enable
 188 * match_criteria
 189 */
 190struct mlx5_flow_group *
 191mlx5_create_flow_group(struct mlx5_flow_table *ft, u32 *in);
 192void mlx5_destroy_flow_group(struct mlx5_flow_group *fg);
 193
 194struct mlx5_fs_vlan {
 195        u16 ethtype;
 196        u16 vid;
 197        u8  prio;
 198};
 199
 200#define MLX5_FS_VLAN_DEPTH      2
 201
 202enum {
 203        FLOW_ACT_NO_APPEND = BIT(0),
 204        FLOW_ACT_IGNORE_FLOW_LEVEL = BIT(1),
 205};
 206
 207struct mlx5_flow_act {
 208        u32 action;
 209        struct mlx5_modify_hdr  *modify_hdr;
 210        struct mlx5_pkt_reformat *pkt_reformat;
 211        union {
 212                u32 ipsec_obj_id;
 213                uintptr_t esp_id;
 214        };
 215        u32 flags;
 216        struct mlx5_fs_vlan vlan[MLX5_FS_VLAN_DEPTH];
 217        struct ib_counters *counters;
 218};
 219
 220#define MLX5_DECLARE_FLOW_ACT(name) \
 221        struct mlx5_flow_act name = { .action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST,\
 222                                      .flags =  0, }
 223
 224/* Single destination per rule.
 225 * Group ID is implied by the match criteria.
 226 */
 227struct mlx5_flow_handle *
 228mlx5_add_flow_rules(struct mlx5_flow_table *ft,
 229                    const struct mlx5_flow_spec *spec,
 230                    struct mlx5_flow_act *flow_act,
 231                    struct mlx5_flow_destination *dest,
 232                    int num_dest);
 233void mlx5_del_flow_rules(struct mlx5_flow_handle *fr);
 234
 235int mlx5_modify_rule_destination(struct mlx5_flow_handle *handler,
 236                                 struct mlx5_flow_destination *new_dest,
 237                                 struct mlx5_flow_destination *old_dest);
 238
 239struct mlx5_fc *mlx5_fc_create(struct mlx5_core_dev *dev, bool aging);
 240void mlx5_fc_destroy(struct mlx5_core_dev *dev, struct mlx5_fc *counter);
 241u64 mlx5_fc_query_lastuse(struct mlx5_fc *counter);
 242void mlx5_fc_query_cached(struct mlx5_fc *counter,
 243                          u64 *bytes, u64 *packets, u64 *lastuse);
 244int mlx5_fc_query(struct mlx5_core_dev *dev, struct mlx5_fc *counter,
 245                  u64 *packets, u64 *bytes);
 246u32 mlx5_fc_id(struct mlx5_fc *counter);
 247
 248int mlx5_fs_add_rx_underlay_qpn(struct mlx5_core_dev *dev, u32 underlay_qpn);
 249int mlx5_fs_remove_rx_underlay_qpn(struct mlx5_core_dev *dev, u32 underlay_qpn);
 250
 251struct mlx5_modify_hdr *mlx5_modify_header_alloc(struct mlx5_core_dev *dev,
 252                                                 u8 ns_type, u8 num_actions,
 253                                                 void *modify_actions);
 254void mlx5_modify_header_dealloc(struct mlx5_core_dev *dev,
 255                                struct mlx5_modify_hdr *modify_hdr);
 256
 257struct mlx5_pkt_reformat *mlx5_packet_reformat_alloc(struct mlx5_core_dev *dev,
 258                                                     int reformat_type,
 259                                                     size_t size,
 260                                                     void *reformat_data,
 261                                                     enum mlx5_flow_namespace_type ns_type);
 262void mlx5_packet_reformat_dealloc(struct mlx5_core_dev *dev,
 263                                  struct mlx5_pkt_reformat *reformat);
 264
 265#endif
 266