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
  41#define MLX5_SET_CFG(p, f, v) MLX5_SET(create_flow_group_in, p, f, v)
  42
  43enum {
  44        MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO  = 1 << 16,
  45        MLX5_FLOW_CONTEXT_ACTION_ENCRYPT        = 1 << 17,
  46        MLX5_FLOW_CONTEXT_ACTION_DECRYPT        = 1 << 18,
  47        MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_NS    = 1 << 19,
  48};
  49
  50enum {
  51        MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT = BIT(0),
  52        MLX5_FLOW_TABLE_TUNNEL_EN_DECAP = BIT(1),
  53        MLX5_FLOW_TABLE_TERMINATION = BIT(2),
  54        MLX5_FLOW_TABLE_UNMANAGED = BIT(3),
  55        MLX5_FLOW_TABLE_OTHER_VPORT = BIT(4),
  56};
  57
  58#define LEFTOVERS_RULE_NUM       2
  59static inline void build_leftovers_ft_param(int *priority,
  60                                            int *n_ent,
  61                                            int *n_grp)
  62{
  63        *priority = 0; /* Priority of leftovers_prio-0 */
  64        *n_ent = LEFTOVERS_RULE_NUM;
  65        *n_grp = LEFTOVERS_RULE_NUM;
  66}
  67
  68enum mlx5_flow_namespace_type {
  69        MLX5_FLOW_NAMESPACE_BYPASS,
  70        MLX5_FLOW_NAMESPACE_LAG,
  71        MLX5_FLOW_NAMESPACE_OFFLOADS,
  72        MLX5_FLOW_NAMESPACE_ETHTOOL,
  73        MLX5_FLOW_NAMESPACE_KERNEL,
  74        MLX5_FLOW_NAMESPACE_LEFTOVERS,
  75        MLX5_FLOW_NAMESPACE_ANCHOR,
  76        MLX5_FLOW_NAMESPACE_FDB,
  77        MLX5_FLOW_NAMESPACE_ESW_EGRESS,
  78        MLX5_FLOW_NAMESPACE_ESW_INGRESS,
  79        MLX5_FLOW_NAMESPACE_SNIFFER_RX,
  80        MLX5_FLOW_NAMESPACE_SNIFFER_TX,
  81        MLX5_FLOW_NAMESPACE_EGRESS,
  82        MLX5_FLOW_NAMESPACE_EGRESS_KERNEL,
  83        MLX5_FLOW_NAMESPACE_RDMA_RX,
  84        MLX5_FLOW_NAMESPACE_RDMA_RX_KERNEL,
  85        MLX5_FLOW_NAMESPACE_RDMA_TX,
  86};
  87
  88enum {
  89        FDB_BYPASS_PATH,
  90        FDB_TC_OFFLOAD,
  91        FDB_FT_OFFLOAD,
  92        FDB_TC_MISS,
  93        FDB_BR_OFFLOAD,
  94        FDB_SLOW_PATH,
  95        FDB_PER_VPORT,
  96};
  97
  98struct mlx5_pkt_reformat;
  99struct mlx5_modify_hdr;
 100struct mlx5_flow_table;
 101struct mlx5_flow_group;
 102struct mlx5_flow_namespace;
 103struct mlx5_flow_handle;
 104
 105enum {
 106        FLOW_CONTEXT_HAS_TAG = BIT(0),
 107};
 108
 109struct mlx5_flow_context {
 110        u32 flags;
 111        u32 flow_tag;
 112        u32 flow_source;
 113};
 114
 115struct mlx5_flow_spec {
 116        u8   match_criteria_enable;
 117        u32  match_criteria[MLX5_ST_SZ_DW(fte_match_param)];
 118        u32  match_value[MLX5_ST_SZ_DW(fte_match_param)];
 119        struct mlx5_flow_context flow_context;
 120};
 121
 122enum {
 123        MLX5_FLOW_DEST_VPORT_VHCA_ID      = BIT(0),
 124        MLX5_FLOW_DEST_VPORT_REFORMAT_ID  = BIT(1),
 125};
 126
 127struct mlx5_flow_destination {
 128        enum mlx5_flow_destination_type type;
 129        union {
 130                u32                     tir_num;
 131                u32                     ft_num;
 132                struct mlx5_flow_table  *ft;
 133                u32                     counter_id;
 134                struct {
 135                        u16             num;
 136                        u16             vhca_id;
 137                        struct mlx5_pkt_reformat *pkt_reformat;
 138                        u8              flags;
 139                } vport;
 140                u32                     sampler_id;
 141        };
 142};
 143
 144struct mod_hdr_tbl {
 145        struct mutex lock; /* protects hlist */
 146        DECLARE_HASHTABLE(hlist, 8);
 147};
 148
 149struct mlx5_flow_namespace *
 150mlx5_get_fdb_sub_ns(struct mlx5_core_dev *dev, int n);
 151struct mlx5_flow_namespace *
 152mlx5_get_flow_namespace(struct mlx5_core_dev *dev,
 153                        enum mlx5_flow_namespace_type type);
 154struct mlx5_flow_namespace *
 155mlx5_get_flow_vport_acl_namespace(struct mlx5_core_dev *dev,
 156                                  enum mlx5_flow_namespace_type type,
 157                                  int vport);
 158
 159struct mlx5_flow_table_attr {
 160        int prio;
 161        int max_fte;
 162        u32 level;
 163        u32 flags;
 164        struct mlx5_flow_table *next_ft;
 165
 166        struct {
 167                int max_num_groups;
 168                int num_reserved_entries;
 169        } autogroup;
 170};
 171
 172struct mlx5_flow_table *
 173mlx5_create_flow_table(struct mlx5_flow_namespace *ns,
 174                       struct mlx5_flow_table_attr *ft_attr);
 175
 176struct mlx5_flow_table *
 177mlx5_create_auto_grouped_flow_table(struct mlx5_flow_namespace *ns,
 178                                    struct mlx5_flow_table_attr *ft_attr);
 179
 180struct mlx5_flow_table *
 181mlx5_create_vport_flow_table(struct mlx5_flow_namespace *ns,
 182                             struct mlx5_flow_table_attr *ft_attr, u16 vport);
 183struct mlx5_flow_table *mlx5_create_lag_demux_flow_table(
 184                                               struct mlx5_flow_namespace *ns,
 185                                               int prio, u32 level);
 186int mlx5_destroy_flow_table(struct mlx5_flow_table *ft);
 187
 188/* inbox should be set with the following values:
 189 * start_flow_index
 190 * end_flow_index
 191 * match_criteria_enable
 192 * match_criteria
 193 */
 194struct mlx5_flow_group *
 195mlx5_create_flow_group(struct mlx5_flow_table *ft, u32 *in);
 196void mlx5_destroy_flow_group(struct mlx5_flow_group *fg);
 197
 198struct mlx5_fs_vlan {
 199        u16 ethtype;
 200        u16 vid;
 201        u8  prio;
 202};
 203
 204#define MLX5_FS_VLAN_DEPTH      2
 205
 206enum {
 207        FLOW_ACT_NO_APPEND = BIT(0),
 208        FLOW_ACT_IGNORE_FLOW_LEVEL = BIT(1),
 209};
 210
 211struct mlx5_flow_act {
 212        u32 action;
 213        struct mlx5_modify_hdr  *modify_hdr;
 214        struct mlx5_pkt_reformat *pkt_reformat;
 215        union {
 216                u32 ipsec_obj_id;
 217                uintptr_t esp_id;
 218        };
 219        u32 flags;
 220        struct mlx5_fs_vlan vlan[MLX5_FS_VLAN_DEPTH];
 221        struct ib_counters *counters;
 222};
 223
 224#define MLX5_DECLARE_FLOW_ACT(name) \
 225        struct mlx5_flow_act name = { .action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST,\
 226                                      .flags =  0, }
 227
 228/* Single destination per rule.
 229 * Group ID is implied by the match criteria.
 230 */
 231struct mlx5_flow_handle *
 232mlx5_add_flow_rules(struct mlx5_flow_table *ft,
 233                    const struct mlx5_flow_spec *spec,
 234                    struct mlx5_flow_act *flow_act,
 235                    struct mlx5_flow_destination *dest,
 236                    int num_dest);
 237void mlx5_del_flow_rules(struct mlx5_flow_handle *fr);
 238
 239int mlx5_modify_rule_destination(struct mlx5_flow_handle *handler,
 240                                 struct mlx5_flow_destination *new_dest,
 241                                 struct mlx5_flow_destination *old_dest);
 242
 243struct mlx5_fc *mlx5_fc_create(struct mlx5_core_dev *dev, bool aging);
 244void mlx5_fc_destroy(struct mlx5_core_dev *dev, struct mlx5_fc *counter);
 245u64 mlx5_fc_query_lastuse(struct mlx5_fc *counter);
 246void mlx5_fc_query_cached(struct mlx5_fc *counter,
 247                          u64 *bytes, u64 *packets, u64 *lastuse);
 248int mlx5_fc_query(struct mlx5_core_dev *dev, struct mlx5_fc *counter,
 249                  u64 *packets, u64 *bytes);
 250u32 mlx5_fc_id(struct mlx5_fc *counter);
 251
 252int mlx5_fs_add_rx_underlay_qpn(struct mlx5_core_dev *dev, u32 underlay_qpn);
 253int mlx5_fs_remove_rx_underlay_qpn(struct mlx5_core_dev *dev, u32 underlay_qpn);
 254
 255struct mlx5_modify_hdr *mlx5_modify_header_alloc(struct mlx5_core_dev *dev,
 256                                                 u8 ns_type, u8 num_actions,
 257                                                 void *modify_actions);
 258void mlx5_modify_header_dealloc(struct mlx5_core_dev *dev,
 259                                struct mlx5_modify_hdr *modify_hdr);
 260
 261struct mlx5_pkt_reformat_params {
 262        int type;
 263        u8 param_0;
 264        u8 param_1;
 265        size_t size;
 266        void *data;
 267};
 268
 269struct mlx5_pkt_reformat *mlx5_packet_reformat_alloc(struct mlx5_core_dev *dev,
 270                                                     struct mlx5_pkt_reformat_params *params,
 271                                                     enum mlx5_flow_namespace_type ns_type);
 272void mlx5_packet_reformat_dealloc(struct mlx5_core_dev *dev,
 273                                  struct mlx5_pkt_reformat *reformat);
 274
 275#endif
 276