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

   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_CORE_
  34 #define _MLX5_FS_CORE_
  35
  36 #include <linux/mlx5/fs.h>
  37 #include <linux/rhashtable.h>
  38
  39 enum fs_node_type {
  40         FS_TYPE_NAMESPACE,
  41         FS_TYPE_PRIO,
  42         FS_TYPE_FLOW_TABLE,
  43         FS_TYPE_FLOW_GROUP,
  44         FS_TYPE_FLOW_ENTRY,
  45         FS_TYPE_FLOW_DEST
  46 };
  47
  48 enum fs_flow_table_type {
  49         FS_FT_NIC_RX          = 0x0,
  50         FS_FT_ESW_EGRESS_ACL  = 0x2,
  51         FS_FT_ESW_INGRESS_ACL = 0x3,
  52         FS_FT_FDB             = 0X4,
  53         FS_FT_SNIFFER_RX        = 0X5,
  54         FS_FT_SNIFFER_TX        = 0X6,
  55 };
  56
  57 enum fs_flow_table_op_mod {
  58         FS_FT_OP_MOD_NORMAL,
  59         FS_FT_OP_MOD_LAG_DEMUX,
  60 };
  61
  62 enum fs_fte_status {
  63         FS_FTE_STATUS_EXISTING = 1UL << 0,
  64 };
  65
  66 struct mlx5_flow_steering {
  67         struct mlx5_core_dev *dev;
  68         struct mlx5_flow_root_namespace *root_ns;
  69         struct mlx5_flow_root_namespace *fdb_root_ns;
  70         struct mlx5_flow_root_namespace *esw_egress_root_ns;
  71         struct mlx5_flow_root_namespace *esw_ingress_root_ns;
  72         struct mlx5_flow_root_namespace *sniffer_tx_root_ns;
  73         struct mlx5_flow_root_namespace *sniffer_rx_root_ns;
  74 };
  75
  76 struct fs_node {
  77         struct list_head        list;
  78         struct list_head        children;
  79         enum fs_node_type       type;
  80         struct fs_node          *parent;
  81         struct fs_node          *root;
  82         /* lock the node for writing and traversing */
  83         struct mutex            lock;
  84         atomic_t                refcount;
  85         void                    (*remove_func)(struct fs_node *);
  86 };
  87
  88 struct mlx5_flow_rule {
  89         struct fs_node                          node;
  90         struct mlx5_flow_destination            dest_attr;
  91         /* next_ft should be accessed under chain_lock and only of
  92          * destination type is FWD_NEXT_fT.
  93          */
  94         struct list_head                        next_ft;
  95         u32                                     sw_action;
  96 };
  97
  98 struct mlx5_flow_handle {
  99         int num_rules;
 100         struct mlx5_flow_rule *rule[];
 101 };
 102
 103 /* Type of children is mlx5_flow_group */
 104 struct mlx5_flow_table {
 105         struct fs_node                  node;
 106         u32                             id;
 107         u16                             vport;
 108         unsigned int                    max_fte;
 109         unsigned int                    level;
 110         enum fs_flow_table_type         type;
 111         enum fs_flow_table_op_mod       op_mod;
 112         struct {
 113                 bool                    active;
 114                 unsigned int            required_groups;
 115                 unsigned int            num_groups;
 116         } autogroup;
 117         /* Protect fwd_rules */
 118         struct mutex                    lock;
 119         /* FWD rules that point on this flow table */
 120         struct list_head                fwd_rules;
 121         u32                             flags;
 122         struct ida                      fte_allocator;
 123         struct rhltable                 fgs_hash;
 124 };
 125
 126 struct mlx5_fc_cache {
 127         u64 packets;
 128         u64 bytes;
 129         u64 lastuse;
 130 };
 131
 132 struct mlx5_fc {
 133         struct rb_node node;
 134         struct list_head list;
 135
 136         /* last{packets,bytes} members are used when calculating the delta since
 137          * last reading
 138          */
 139         u64 lastpackets;
 140         u64 lastbytes;
 141
 142         u32 id;
 143         bool deleted;
 144         bool aging;
 145
 146         struct mlx5_fc_cache cache ____cacheline_aligned_in_smp;
 147 };
 148
 149 #define MLX5_FTE_MATCH_PARAM_RESERVED   reserved_at_600
 150 /* Calculate the fte_match_param length and without the reserved length.
 151  * Make sure the reserved field is the last.
 152  */
 153 #define MLX5_ST_SZ_DW_MATCH_PARAM                                           \
 154         ((MLX5_BYTE_OFF(fte_match_param, MLX5_FTE_MATCH_PARAM_RESERVED) / sizeof(u32)) + \
 155          BUILD_BUG_ON_ZERO(MLX5_ST_SZ_BYTES(fte_match_param) !=              \
 156                            MLX5_FLD_SZ_BYTES(fte_match_param,                \
 157                                              MLX5_FTE_MATCH_PARAM_RESERVED) +\
 158                            MLX5_BYTE_OFF(fte_match_param,                    \
 159                                          MLX5_FTE_MATCH_PARAM_RESERVED)))
 160
 161 /* Type of children is mlx5_flow_rule */
 162 struct fs_fte {
 163         struct fs_node                  node;
 164         u32                             val[MLX5_ST_SZ_DW_MATCH_PARAM];
 165         u32                             dests_size;
 166         u32                             flow_tag;
 167         u32                             index;
 168         u32                             action;
 169         u32                             encap_id;
 170         u32                             modify_id;
 171         enum fs_fte_status              status;
 172         struct mlx5_fc                  *counter;
 173         struct rhash_head               hash;
 174 };
 175
 176 /* Type of children is mlx5_flow_table/namespace */
 177 struct fs_prio {
 178         struct fs_node                  node;
 179         unsigned int                    num_levels;
 180         unsigned int                    start_level;
 181         unsigned int                    prio;
 182         unsigned int                    num_ft;
 183 };
 184
 185 /* Type of children is fs_prio */
 186 struct mlx5_flow_namespace {
 187         /* parent == NULL => root ns */
 188         struct  fs_node                 node;
 189 };
 190
 191 struct mlx5_flow_group_mask {
 192         u8      match_criteria_enable;
 193         u32     match_criteria[MLX5_ST_SZ_DW_MATCH_PARAM];
 194 };
 195
 196 /* Type of children is fs_fte */
 197 struct mlx5_flow_group {
 198         struct fs_node                  node;
 199         struct mlx5_flow_group_mask     mask;
 200         u32                             start_index;
 201         u32                             max_ftes;
 202         u32                             id;
 203         struct rhashtable               ftes_hash;
 204         struct rhlist_head              hash;
 205 };
 206
 207 struct mlx5_flow_root_namespace {
 208         struct mlx5_flow_namespace      ns;
 209         enum   fs_flow_table_type       table_type;
 210         struct mlx5_core_dev            *dev;
 211         struct mlx5_flow_table          *root_ft;
 212         /* Should be held when chaining flow tables */
 213         struct mutex                    chain_lock;
 214         u32                             underlay_qpn;
 215 };
 216
 217 int mlx5_init_fc_stats(struct mlx5_core_dev *dev);
 218 void mlx5_cleanup_fc_stats(struct mlx5_core_dev *dev);
 219 void mlx5_fc_queue_stats_work(struct mlx5_core_dev *dev,
 220                               struct delayed_work *dwork,
 221                               unsigned long delay);
 222 void mlx5_fc_update_sampling_interval(struct mlx5_core_dev *dev,
 223                                       unsigned long interval);
 224
 225 int mlx5_init_fs(struct mlx5_core_dev *dev);
 226 void mlx5_cleanup_fs(struct mlx5_core_dev *dev);
 227
 228 #define fs_get_obj(v, _node)  {v = container_of((_node), typeof(*v), node); }
 229
 230 #define fs_list_for_each_entry(pos, root)               \
 231         list_for_each_entry(pos, root, node.list)
 232
 233 #define fs_list_for_each_entry_safe(pos, tmp, root)             \
 234         list_for_each_entry_safe(pos, tmp, root, node.list)
 235
 236 #define fs_for_each_ns_or_ft_reverse(pos, prio)                         \
 237         list_for_each_entry_reverse(pos, &(prio)->node.children, list)
 238
 239 #define fs_for_each_ns_or_ft(pos, prio)                                 \
 240         list_for_each_entry(pos, (&(prio)->node.children), list)
 241
 242 #define fs_for_each_prio(pos, ns)                       \
 243         fs_list_for_each_entry(pos, &(ns)->node.children)
 244
 245 #define fs_for_each_ns(pos, prio)                       \
 246         fs_list_for_each_entry(pos, &(prio)->node.children)
 247
 248 #define fs_for_each_ft(pos, prio)                       \
 249         fs_list_for_each_entry(pos, &(prio)->node.children)
 250
 251 #define fs_for_each_ft_safe(pos, tmp, prio)                     \
 252         fs_list_for_each_entry_safe(pos, tmp, &(prio)->node.children)
 253
 254 #define fs_for_each_fg(pos, ft)                 \
 255         fs_list_for_each_entry(pos, &(ft)->node.children)
 256
 257 #define fs_for_each_fte(pos, fg)                        \
 258         fs_list_for_each_entry(pos, &(fg)->node.children)
 259
 260 #define fs_for_each_dst(pos, fte)                       \
 261         fs_list_for_each_entry(pos, &(fte)->node.children)
 262
 263 #endif