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
  38 enum fs_node_type {
  39         FS_TYPE_NAMESPACE,
  40         FS_TYPE_PRIO,
  41         FS_TYPE_FLOW_TABLE,
  42         FS_TYPE_FLOW_GROUP,
  43         FS_TYPE_FLOW_ENTRY,
  44         FS_TYPE_FLOW_DEST
  45 };
  46
  47 enum fs_flow_table_type {
  48         FS_FT_NIC_RX          = 0x0,
  49         FS_FT_ESW_EGRESS_ACL  = 0x2,
  50         FS_FT_ESW_INGRESS_ACL = 0x3,
  51         FS_FT_FDB             = 0X4,
  52 };
  53
  54 enum fs_flow_table_op_mod {
  55         FS_FT_OP_MOD_NORMAL,
  56         FS_FT_OP_MOD_LAG_DEMUX,
  57 };
  58
  59 enum fs_fte_status {
  60         FS_FTE_STATUS_EXISTING = 1UL << 0,
  61 };
  62
  63 struct mlx5_flow_steering {
  64         struct mlx5_core_dev *dev;
  65         struct mlx5_flow_root_namespace *root_ns;
  66         struct mlx5_flow_root_namespace *fdb_root_ns;
  67         struct mlx5_flow_root_namespace *esw_egress_root_ns;
  68         struct mlx5_flow_root_namespace *esw_ingress_root_ns;
  69 };
  70
  71 struct fs_node {
  72         struct list_head        list;
  73         struct list_head        children;
  74         enum fs_node_type       type;
  75         struct fs_node          *parent;
  76         struct fs_node          *root;
  77         /* lock the node for writing and traversing */
  78         struct mutex            lock;
  79         atomic_t                refcount;
  80         void                    (*remove_func)(struct fs_node *);
  81 };
  82
  83 struct mlx5_flow_rule {
  84         struct fs_node                          node;
  85         struct mlx5_flow_destination            dest_attr;
  86         /* next_ft should be accessed under chain_lock and only of
  87          * destination type is FWD_NEXT_fT.
  88          */
  89         struct list_head                        next_ft;
  90         u32                                     sw_action;
  91 };
  92
  93 /* Type of children is mlx5_flow_group */
  94 struct mlx5_flow_table {
  95         struct fs_node                  node;
  96         u32                             id;
  97         u16                             vport;
  98         unsigned int                    max_fte;
  99         unsigned int                    level;
 100         enum fs_flow_table_type         type;
 101         enum fs_flow_table_op_mod       op_mod;
 102         struct {
 103                 bool                    active;
 104                 unsigned int            required_groups;
 105                 unsigned int            num_groups;
 106         } autogroup;
 107         /* Protect fwd_rules */
 108         struct mutex                    lock;
 109         /* FWD rules that point on this flow table */
 110         struct list_head                fwd_rules;
 111 };
 112
 113 struct mlx5_fc_cache {
 114         u64 packets;
 115         u64 bytes;
 116         u64 lastuse;
 117 };
 118
 119 struct mlx5_fc {
 120         struct rb_node node;
 121         struct list_head list;
 122
 123         /* last{packets,bytes} members are used when calculating the delta since
 124          * last reading
 125          */
 126         u64 lastpackets;
 127         u64 lastbytes;
 128
 129         u16 id;
 130         bool deleted;
 131         bool aging;
 132
 133         struct mlx5_fc_cache cache ____cacheline_aligned_in_smp;
 134 };
 135
 136 /* Type of children is mlx5_flow_rule */
 137 struct fs_fte {
 138         struct fs_node                  node;
 139         u32                             val[MLX5_ST_SZ_DW(fte_match_param)];
 140         u32                             dests_size;
 141         u32                             flow_tag;
 142         u32                             index;
 143         u32                             action;
 144         enum fs_fte_status              status;
 145         struct mlx5_fc                  *counter;
 146 };
 147
 148 /* Type of children is mlx5_flow_table/namespace */
 149 struct fs_prio {
 150         struct fs_node                  node;
 151         unsigned int                    num_levels;
 152         unsigned int                    start_level;
 153         unsigned int                    prio;
 154         unsigned int                    num_ft;
 155 };
 156
 157 /* Type of children is fs_prio */
 158 struct mlx5_flow_namespace {
 159         /* parent == NULL => root ns */
 160         struct  fs_node                 node;
 161 };
 162
 163 struct mlx5_flow_group_mask {
 164         u8      match_criteria_enable;
 165         u32     match_criteria[MLX5_ST_SZ_DW(fte_match_param)];
 166 };
 167
 168 /* Type of children is fs_fte */
 169 struct mlx5_flow_group {
 170         struct fs_node                  node;
 171         struct mlx5_flow_group_mask     mask;
 172         u32                             start_index;
 173         u32                             max_ftes;
 174         u32                             num_ftes;
 175         u32                             id;
 176 };
 177
 178 struct mlx5_flow_root_namespace {
 179         struct mlx5_flow_namespace      ns;
 180         enum   fs_flow_table_type       table_type;
 181         struct mlx5_core_dev            *dev;
 182         struct mlx5_flow_table          *root_ft;
 183         /* Should be held when chaining flow tables */
 184         struct mutex                    chain_lock;
 185 };
 186
 187 int mlx5_init_fc_stats(struct mlx5_core_dev *dev);
 188 void mlx5_cleanup_fc_stats(struct mlx5_core_dev *dev);
 189
 190 int mlx5_init_fs(struct mlx5_core_dev *dev);
 191 void mlx5_cleanup_fs(struct mlx5_core_dev *dev);
 192
 193 #define fs_get_obj(v, _node)  {v = container_of((_node), typeof(*v), node); }
 194
 195 #define fs_list_for_each_entry(pos, root)               \
 196         list_for_each_entry(pos, root, node.list)
 197
 198 #define fs_list_for_each_entry_safe(pos, tmp, root)             \
 199         list_for_each_entry_safe(pos, tmp, root, node.list)
 200
 201 #define fs_for_each_ns_or_ft_reverse(pos, prio)                         \
 202         list_for_each_entry_reverse(pos, &(prio)->node.children, list)
 203
 204 #define fs_for_each_ns_or_ft(pos, prio)                                 \
 205         list_for_each_entry(pos, (&(prio)->node.children), list)
 206
 207 #define fs_for_each_prio(pos, ns)                       \
 208         fs_list_for_each_entry(pos, &(ns)->node.children)
 209
 210 #define fs_for_each_ns(pos, prio)                       \
 211         fs_list_for_each_entry(pos, &(prio)->node.children)
 212
 213 #define fs_for_each_ft(pos, prio)                       \
 214         fs_list_for_each_entry(pos, &(prio)->node.children)
 215
 216 #define fs_for_each_ft_safe(pos, tmp, prio)                     \
 217         fs_list_for_each_entry_safe(pos, tmp, &(prio)->node.children)
 218
 219 #define fs_for_each_fg(pos, ft)                 \
 220         fs_list_for_each_entry(pos, &(ft)->node.children)
 221
 222 #define fs_for_each_fte(pos, fg)                        \
 223         fs_list_for_each_entry(pos, &(fg)->node.children)
 224
 225 #define fs_for_each_dst(pos, fte)                       \
 226         fs_list_for_each_entry(pos, &(fte)->node.children)
 227
 228 #endif