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/refcount.h>
37#include <linux/mlx5/fs.h>
38#include <linux/rhashtable.h>
39#include <linux/llist.h>
40#include <steering/fs_dr.h>
41
42#define FDB_TC_MAX_CHAIN 3
43#define FDB_FT_CHAIN (FDB_TC_MAX_CHAIN + 1)
44#define FDB_TC_SLOW_PATH_CHAIN (FDB_FT_CHAIN + 1)
45
46/* The index of the last real chain (FT) + 1 as chain zero is valid as well */
47#define FDB_NUM_CHAINS (FDB_FT_CHAIN + 1)
48
49#define FDB_TC_MAX_PRIO 16
50#define FDB_TC_LEVELS_PER_PRIO 2
51
52struct mlx5_flow_definer {
53 enum mlx5_flow_namespace_type ns_type;
54 u32 id;
55};
56
57enum mlx5_flow_resource_owner {
58 MLX5_FLOW_RESOURCE_OWNER_FW,
59 MLX5_FLOW_RESOURCE_OWNER_SW,
60};
61
62struct mlx5_modify_hdr {
63 enum mlx5_flow_namespace_type ns_type;
64 enum mlx5_flow_resource_owner owner;
65 union {
66 struct mlx5_fs_dr_action action;
67 u32 id;
68 };
69};
70
71struct mlx5_pkt_reformat {
72 enum mlx5_flow_namespace_type ns_type;
73 int reformat_type; /* from mlx5_ifc */
74 enum mlx5_flow_resource_owner owner;
75 union {
76 struct mlx5_fs_dr_action action;
77 u32 id;
78 };
79};
80
81/* FS_TYPE_PRIO_CHAINS is a PRIO that will have namespaces only,
82 * and those are in parallel to one another when going over them to connect
83 * a new flow table. Meaning the last flow table in a TYPE_PRIO prio in one
84 * parallel namespace will not automatically connect to the first flow table
85 * found in any prio in any next namespace, but skip the entire containing
86 * TYPE_PRIO_CHAINS prio.
87 *
88 * This is used to implement tc chains, each chain of prios is a different
89 * namespace inside a containing TYPE_PRIO_CHAINS prio.
90 */
91
92enum fs_node_type {
93 FS_TYPE_NAMESPACE,
94 FS_TYPE_PRIO,
95 FS_TYPE_PRIO_CHAINS,
96 FS_TYPE_FLOW_TABLE,
97 FS_TYPE_FLOW_GROUP,
98 FS_TYPE_FLOW_ENTRY,
99 FS_TYPE_FLOW_DEST
100};
101
102enum fs_flow_table_type {
103 FS_FT_NIC_RX = 0x0,
104 FS_FT_NIC_TX = 0x1,
105 FS_FT_ESW_EGRESS_ACL = 0x2,
106 FS_FT_ESW_INGRESS_ACL = 0x3,
107 FS_FT_FDB = 0X4,
108 FS_FT_SNIFFER_RX = 0X5,
109 FS_FT_SNIFFER_TX = 0X6,
110 FS_FT_RDMA_RX = 0X7,
111 FS_FT_RDMA_TX = 0X8,
112 FS_FT_PORT_SEL = 0X9,
113 FS_FT_MAX_TYPE = FS_FT_PORT_SEL,
114};
115
116enum fs_flow_table_op_mod {
117 FS_FT_OP_MOD_NORMAL,
118 FS_FT_OP_MOD_LAG_DEMUX,
119};
120
121enum fs_fte_status {
122 FS_FTE_STATUS_EXISTING = 1UL << 0,
123};
124
125enum mlx5_flow_steering_mode {
126 MLX5_FLOW_STEERING_MODE_DMFS,
127 MLX5_FLOW_STEERING_MODE_SMFS
128};
129
130enum mlx5_flow_steering_capabilty {
131 MLX5_FLOW_STEERING_CAP_VLAN_PUSH_ON_RX = 1UL << 0,
132 MLX5_FLOW_STEERING_CAP_VLAN_POP_ON_TX = 1UL << 1,
133 MLX5_FLOW_STEERING_CAP_MATCH_RANGES = 1UL << 2,
134};
135
136struct mlx5_flow_steering {
137 struct mlx5_core_dev *dev;
138 enum mlx5_flow_steering_mode mode;
139 struct kmem_cache *fgs_cache;
140 struct kmem_cache *ftes_cache;
141 struct mlx5_flow_root_namespace *root_ns;
142 struct mlx5_flow_root_namespace *fdb_root_ns;
143 struct mlx5_flow_namespace **fdb_sub_ns;
144 struct mlx5_flow_root_namespace **esw_egress_root_ns;
145 struct mlx5_flow_root_namespace **esw_ingress_root_ns;
146 struct mlx5_flow_root_namespace *sniffer_tx_root_ns;
147 struct mlx5_flow_root_namespace *sniffer_rx_root_ns;
148 struct mlx5_flow_root_namespace *rdma_rx_root_ns;
149 struct mlx5_flow_root_namespace *rdma_tx_root_ns;
150 struct mlx5_flow_root_namespace *egress_root_ns;
151 struct mlx5_flow_root_namespace *port_sel_root_ns;
152 int esw_egress_acl_vports;
153 int esw_ingress_acl_vports;
154};
155
156struct fs_node {
157 struct list_head list;
158 struct list_head children;
159 enum fs_node_type type;
160 struct fs_node *parent;
161 struct fs_node *root;
162 /* lock the node for writing and traversing */
163 struct rw_semaphore lock;
164 refcount_t refcount;
165 bool active;
166 void (*del_hw_func)(struct fs_node *);
167 void (*del_sw_func)(struct fs_node *);
168 atomic_t version;
169};
170
171struct mlx5_flow_rule {
172 struct fs_node node;
173 struct mlx5_flow_table *ft;
174 struct mlx5_flow_destination dest_attr;
175 /* next_ft should be accessed under chain_lock and only of
176 * destination type is FWD_NEXT_fT.
177 */
178 struct list_head next_ft;
179 u32 sw_action;
180};
181
182struct mlx5_flow_handle {
183 int num_rules;
184 struct mlx5_flow_rule *rule[] __counted_by(num_rules);
185};
186
187/* Type of children is mlx5_flow_group */
188struct mlx5_flow_table {
189 struct fs_node node;
190 struct mlx5_fs_dr_table fs_dr_table;
191 u32 id;
192 u16 vport;
193 unsigned int max_fte;
194 unsigned int level;
195 enum fs_flow_table_type type;
196 enum fs_flow_table_op_mod op_mod;
197 struct {
198 bool active;
199 unsigned int required_groups;
200 unsigned int group_size;
201 unsigned int num_groups;
202 unsigned int max_fte;
203 } autogroup;
204 /* Protect fwd_rules */
205 struct mutex lock;
206 /* FWD rules that point on this flow table */
207 struct list_head fwd_rules;
208 u32 flags;
209 struct rhltable fgs_hash;
210 enum mlx5_flow_table_miss_action def_miss_action;
211 struct mlx5_flow_namespace *ns;
212};
213
214struct mlx5_ft_underlay_qp {
215 struct list_head list;
216 u32 qpn;
217};
218
219#define MLX5_FTE_MATCH_PARAM_RESERVED reserved_at_e00
220/* Calculate the fte_match_param length and without the reserved length.
221 * Make sure the reserved field is the last.
222 */
223#define MLX5_ST_SZ_DW_MATCH_PARAM \
224 ((MLX5_BYTE_OFF(fte_match_param, MLX5_FTE_MATCH_PARAM_RESERVED) / sizeof(u32)) + \
225 BUILD_BUG_ON_ZERO(MLX5_ST_SZ_BYTES(fte_match_param) != \
226 MLX5_FLD_SZ_BYTES(fte_match_param, \
227 MLX5_FTE_MATCH_PARAM_RESERVED) +\
228 MLX5_BYTE_OFF(fte_match_param, \
229 MLX5_FTE_MATCH_PARAM_RESERVED)))
230
231/* Type of children is mlx5_flow_rule */
232struct fs_fte {
233 struct fs_node node;
234 struct mlx5_fs_dr_rule fs_dr_rule;
235 u32 val[MLX5_ST_SZ_DW_MATCH_PARAM];
236 u32 dests_size;
237 u32 fwd_dests;
238 u32 index;
239 struct mlx5_flow_context flow_context;
240 struct mlx5_flow_act action;
241 enum fs_fte_status status;
242 struct mlx5_fc *counter;
243 struct rhash_head hash;
244 int modify_mask;
245};
246
247/* Type of children is mlx5_flow_table/namespace */
248struct fs_prio {
249 struct fs_node node;
250 unsigned int num_levels;
251 unsigned int start_level;
252 unsigned int prio;
253 unsigned int num_ft;
254};
255
256/* Type of children is fs_prio */
257struct mlx5_flow_namespace {
258 /* parent == NULL => root ns */
259 struct fs_node node;
260 enum mlx5_flow_table_miss_action def_miss_action;
261};
262
263struct mlx5_flow_group_mask {
264 u8 match_criteria_enable;
265 u32 match_criteria[MLX5_ST_SZ_DW_MATCH_PARAM];
266};
267
268/* Type of children is fs_fte */
269struct mlx5_flow_group {
270 struct fs_node node;
271 struct mlx5_fs_dr_matcher fs_dr_matcher;
272 struct mlx5_flow_group_mask mask;
273 u32 start_index;
274 u32 max_ftes;
275 struct ida fte_allocator;
276 u32 id;
277 struct rhashtable ftes_hash;
278 struct rhlist_head hash;
279};
280
281struct mlx5_flow_root_namespace {
282 struct mlx5_flow_namespace ns;
283 enum mlx5_flow_steering_mode mode;
284 struct mlx5_fs_dr_domain fs_dr_domain;
285 enum fs_flow_table_type table_type;
286 struct mlx5_core_dev *dev;
287 struct mlx5_flow_table *root_ft;
288 /* Should be held when chaining flow tables */
289 struct mutex chain_lock;
290 struct list_head underlay_qpns;
291 const struct mlx5_flow_cmds *cmds;
292};
293
294int mlx5_init_fc_stats(struct mlx5_core_dev *dev);
295void mlx5_cleanup_fc_stats(struct mlx5_core_dev *dev);
296void mlx5_fc_queue_stats_work(struct mlx5_core_dev *dev,
297 struct delayed_work *dwork,
298 unsigned long delay);
299void mlx5_fc_update_sampling_interval(struct mlx5_core_dev *dev,
300 unsigned long interval);
301
302const struct mlx5_flow_cmds *mlx5_fs_cmd_get_fw_cmds(void);
303
304int mlx5_flow_namespace_set_peer(struct mlx5_flow_root_namespace *ns,
305 struct mlx5_flow_root_namespace *peer_ns,
306 u16 peer_vhca_id);
307
308int mlx5_flow_namespace_set_mode(struct mlx5_flow_namespace *ns,
309 enum mlx5_flow_steering_mode mode);
310
311int mlx5_fs_core_alloc(struct mlx5_core_dev *dev);
312void mlx5_fs_core_free(struct mlx5_core_dev *dev);
313int mlx5_fs_core_init(struct mlx5_core_dev *dev);
314void mlx5_fs_core_cleanup(struct mlx5_core_dev *dev);
315
316int mlx5_fs_egress_acls_init(struct mlx5_core_dev *dev, int total_vports);
317void mlx5_fs_egress_acls_cleanup(struct mlx5_core_dev *dev);
318int mlx5_fs_ingress_acls_init(struct mlx5_core_dev *dev, int total_vports);
319void mlx5_fs_ingress_acls_cleanup(struct mlx5_core_dev *dev);
320
321u32 mlx5_fs_get_capabilities(struct mlx5_core_dev *dev, enum mlx5_flow_namespace_type type);
322
323struct mlx5_flow_root_namespace *find_root(struct fs_node *node);
324
325#define fs_get_obj(v, _node) {v = container_of((_node), typeof(*v), node); }
326
327#define fs_list_for_each_entry(pos, root) \
328 list_for_each_entry(pos, root, node.list)
329
330#define fs_list_for_each_entry_safe(pos, tmp, root) \
331 list_for_each_entry_safe(pos, tmp, root, node.list)
332
333#define fs_for_each_ns_or_ft_reverse(pos, prio) \
334 list_for_each_entry_reverse(pos, &(prio)->node.children, list)
335
336#define fs_for_each_ns_or_ft(pos, prio) \
337 list_for_each_entry(pos, (&(prio)->node.children), list)
338
339#define fs_for_each_prio(pos, ns) \
340 fs_list_for_each_entry(pos, &(ns)->node.children)
341
342#define fs_for_each_ns(pos, prio) \
343 fs_list_for_each_entry(pos, &(prio)->node.children)
344
345#define fs_for_each_ft(pos, prio) \
346 fs_list_for_each_entry(pos, &(prio)->node.children)
347
348#define fs_for_each_ft_safe(pos, tmp, prio) \
349 fs_list_for_each_entry_safe(pos, tmp, &(prio)->node.children)
350
351#define fs_for_each_fg(pos, ft) \
352 fs_list_for_each_entry(pos, &(ft)->node.children)
353
354#define fs_for_each_fte(pos, fg) \
355 fs_list_for_each_entry(pos, &(fg)->node.children)
356
357#define fs_for_each_dst(pos, fte) \
358 fs_list_for_each_entry(pos, &(fte)->node.children)
359
360#define MLX5_CAP_FLOWTABLE_TYPE(mdev, cap, type) ( \
361 (type == FS_FT_NIC_RX) ? MLX5_CAP_FLOWTABLE_NIC_RX(mdev, cap) : \
362 (type == FS_FT_NIC_TX) ? MLX5_CAP_FLOWTABLE_NIC_TX(mdev, cap) : \
363 (type == FS_FT_ESW_EGRESS_ACL) ? MLX5_CAP_ESW_EGRESS_ACL(mdev, cap) : \
364 (type == FS_FT_ESW_INGRESS_ACL) ? MLX5_CAP_ESW_INGRESS_ACL(mdev, cap) : \
365 (type == FS_FT_FDB) ? MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, cap) : \
366 (type == FS_FT_SNIFFER_RX) ? MLX5_CAP_FLOWTABLE_SNIFFER_RX(mdev, cap) : \
367 (type == FS_FT_SNIFFER_TX) ? MLX5_CAP_FLOWTABLE_SNIFFER_TX(mdev, cap) : \
368 (type == FS_FT_RDMA_RX) ? MLX5_CAP_FLOWTABLE_RDMA_RX(mdev, cap) : \
369 (type == FS_FT_RDMA_TX) ? MLX5_CAP_FLOWTABLE_RDMA_TX(mdev, cap) : \
370 (type == FS_FT_PORT_SEL) ? MLX5_CAP_FLOWTABLE_PORT_SELECTION(mdev, cap) : \
371 (BUILD_BUG_ON_ZERO(FS_FT_PORT_SEL != FS_FT_MAX_TYPE))\
372 )
373
374#endif
375

source code of linux/drivers/net/ethernet/mellanox/mlx5/core/fs_core.h