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