1 /*
2 * Copyright (c) 2016, 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 #include <linux/etherdevice.h>
34 #include <linux/idr.h>
35 #include <linux/mlx5/driver.h>
36 #include <linux/mlx5/mlx5_ifc.h>
37 #include <linux/mlx5/vport.h>
38 #include <linux/mlx5/fs.h>
39 #include "mlx5_core.h"
40 #include "eswitch.h"
41 #include "esw/indir_table.h"
42 #include "esw/acl/ofld.h"
43 #include "rdma.h"
44 #include "en.h"
45 #include "fs_core.h"
46 #include "lib/devcom.h"
47 #include "lib/eq.h"
48 #include "lib/fs_chains.h"
49 #include "en_tc.h"
50 #include "en/mapping.h"
51 #include "devlink.h"
52 #include "lag/lag.h"
53 #include "en/tc/post_meter.h"
54
55 #define mlx5_esw_for_each_rep(esw, i, rep) \
56 xa_for_each(&((esw)->offloads.vport_reps), i, rep)
57
58 /* There are two match-all miss flows, one for unicast dst mac and
59 * one for multicast.
60 */
61 #define MLX5_ESW_MISS_FLOWS (2)
62 #define UPLINK_REP_INDEX 0
63
64 #define MLX5_ESW_VPORT_TBL_SIZE 128
65 #define MLX5_ESW_VPORT_TBL_NUM_GROUPS 4
66
67 #define MLX5_ESW_FT_OFFLOADS_DROP_RULE (1)
68
69 static struct esw_vport_tbl_namespace mlx5_esw_vport_tbl_mirror_ns = {
70 .max_fte = MLX5_ESW_VPORT_TBL_SIZE,
71 .max_num_groups = MLX5_ESW_VPORT_TBL_NUM_GROUPS,
72 .flags = 0,
73 };
74
mlx5_eswitch_get_rep(struct mlx5_eswitch * esw,u16 vport_num)75 static struct mlx5_eswitch_rep *mlx5_eswitch_get_rep(struct mlx5_eswitch *esw,
76 u16 vport_num)
77 {
78 return xa_load(&esw->offloads.vport_reps, vport_num);
79 }
80
81 static void
mlx5_eswitch_set_rule_flow_source(struct mlx5_eswitch * esw,struct mlx5_flow_spec * spec,struct mlx5_esw_flow_attr * attr)82 mlx5_eswitch_set_rule_flow_source(struct mlx5_eswitch *esw,
83 struct mlx5_flow_spec *spec,
84 struct mlx5_esw_flow_attr *attr)
85 {
86 if (!MLX5_CAP_ESW_FLOWTABLE(esw->dev, flow_source) || !attr || !attr->in_rep)
87 return;
88
89 if (attr->int_port) {
90 spec->flow_context.flow_source = mlx5e_tc_int_port_get_flow_source(attr->int_port);
91
92 return;
93 }
94
95 spec->flow_context.flow_source = (attr->in_rep->vport == MLX5_VPORT_UPLINK) ?
96 MLX5_FLOW_CONTEXT_FLOW_SOURCE_UPLINK :
97 MLX5_FLOW_CONTEXT_FLOW_SOURCE_LOCAL_VPORT;
98 }
99
100 /* Actually only the upper 16 bits of reg c0 need to be cleared, but the lower 16 bits
101 * are not needed as well in the following process. So clear them all for simplicity.
102 */
103 void
mlx5_eswitch_clear_rule_source_port(struct mlx5_eswitch * esw,struct mlx5_flow_spec * spec)104 mlx5_eswitch_clear_rule_source_port(struct mlx5_eswitch *esw, struct mlx5_flow_spec *spec)
105 {
106 if (mlx5_eswitch_vport_match_metadata_enabled(esw)) {
107 void *misc2;
108
109 misc2 = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters_2);
110 MLX5_SET(fte_match_set_misc2, misc2, metadata_reg_c_0, 0);
111
112 misc2 = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters_2);
113 MLX5_SET(fte_match_set_misc2, misc2, metadata_reg_c_0, 0);
114
115 if (!memchr_inv(misc2, 0, MLX5_ST_SZ_BYTES(fte_match_set_misc2)))
116 spec->match_criteria_enable &= ~MLX5_MATCH_MISC_PARAMETERS_2;
117 }
118 }
119
120 static void
mlx5_eswitch_set_rule_source_port(struct mlx5_eswitch * esw,struct mlx5_flow_spec * spec,struct mlx5_flow_attr * attr,struct mlx5_eswitch * src_esw,u16 vport)121 mlx5_eswitch_set_rule_source_port(struct mlx5_eswitch *esw,
122 struct mlx5_flow_spec *spec,
123 struct mlx5_flow_attr *attr,
124 struct mlx5_eswitch *src_esw,
125 u16 vport)
126 {
127 struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
128 u32 metadata;
129 void *misc2;
130 void *misc;
131
132 /* Use metadata matching because vport is not represented by single
133 * VHCA in dual-port RoCE mode, and matching on source vport may fail.
134 */
135 if (mlx5_eswitch_vport_match_metadata_enabled(esw)) {
136 if (mlx5_esw_indir_table_decap_vport(attr))
137 vport = mlx5_esw_indir_table_decap_vport(attr);
138
139 if (!attr->chain && esw_attr && esw_attr->int_port)
140 metadata =
141 mlx5e_tc_int_port_get_metadata_for_match(esw_attr->int_port);
142 else
143 metadata =
144 mlx5_eswitch_get_vport_metadata_for_match(src_esw, vport);
145
146 misc2 = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters_2);
147 MLX5_SET(fte_match_set_misc2, misc2, metadata_reg_c_0, metadata);
148
149 misc2 = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters_2);
150 MLX5_SET(fte_match_set_misc2, misc2, metadata_reg_c_0,
151 mlx5_eswitch_get_vport_metadata_mask());
152
153 spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS_2;
154 } else {
155 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters);
156 MLX5_SET(fte_match_set_misc, misc, source_port, vport);
157
158 if (MLX5_CAP_ESW(esw->dev, merged_eswitch))
159 MLX5_SET(fte_match_set_misc, misc,
160 source_eswitch_owner_vhca_id,
161 MLX5_CAP_GEN(src_esw->dev, vhca_id));
162
163 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters);
164 MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
165 if (MLX5_CAP_ESW(esw->dev, merged_eswitch))
166 MLX5_SET_TO_ONES(fte_match_set_misc, misc,
167 source_eswitch_owner_vhca_id);
168
169 spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS;
170 }
171 }
172
173 static int
esw_setup_decap_indir(struct mlx5_eswitch * esw,struct mlx5_flow_attr * attr)174 esw_setup_decap_indir(struct mlx5_eswitch *esw,
175 struct mlx5_flow_attr *attr)
176 {
177 struct mlx5_flow_table *ft;
178
179 if (!(attr->flags & MLX5_ATTR_FLAG_SRC_REWRITE))
180 return -EOPNOTSUPP;
181
182 ft = mlx5_esw_indir_table_get(esw, attr,
183 mlx5_esw_indir_table_decap_vport(attr), true);
184 return PTR_ERR_OR_ZERO(ft);
185 }
186
187 static void
esw_cleanup_decap_indir(struct mlx5_eswitch * esw,struct mlx5_flow_attr * attr)188 esw_cleanup_decap_indir(struct mlx5_eswitch *esw,
189 struct mlx5_flow_attr *attr)
190 {
191 if (mlx5_esw_indir_table_decap_vport(attr))
192 mlx5_esw_indir_table_put(esw,
193 mlx5_esw_indir_table_decap_vport(attr),
194 true);
195 }
196
197 static int
esw_setup_mtu_dest(struct mlx5_flow_destination * dest,struct mlx5e_meter_attr * meter,int i)198 esw_setup_mtu_dest(struct mlx5_flow_destination *dest,
199 struct mlx5e_meter_attr *meter,
200 int i)
201 {
202 dest[i].type = MLX5_FLOW_DESTINATION_TYPE_RANGE;
203 dest[i].range.field = MLX5_FLOW_DEST_RANGE_FIELD_PKT_LEN;
204 dest[i].range.min = 0;
205 dest[i].range.max = meter->params.mtu;
206 dest[i].range.hit_ft = mlx5e_post_meter_get_mtu_true_ft(meter->post_meter);
207 dest[i].range.miss_ft = mlx5e_post_meter_get_mtu_false_ft(meter->post_meter);
208
209 return 0;
210 }
211
212 static int
esw_setup_sampler_dest(struct mlx5_flow_destination * dest,struct mlx5_flow_act * flow_act,u32 sampler_id,int i)213 esw_setup_sampler_dest(struct mlx5_flow_destination *dest,
214 struct mlx5_flow_act *flow_act,
215 u32 sampler_id,
216 int i)
217 {
218 flow_act->flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
219 dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_SAMPLER;
220 dest[i].sampler_id = sampler_id;
221
222 return 0;
223 }
224
225 static int
esw_setup_ft_dest(struct mlx5_flow_destination * dest,struct mlx5_flow_act * flow_act,struct mlx5_eswitch * esw,struct mlx5_flow_attr * attr,int i)226 esw_setup_ft_dest(struct mlx5_flow_destination *dest,
227 struct mlx5_flow_act *flow_act,
228 struct mlx5_eswitch *esw,
229 struct mlx5_flow_attr *attr,
230 int i)
231 {
232 flow_act->flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
233 dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
234 dest[i].ft = attr->dest_ft;
235
236 if (mlx5_esw_indir_table_decap_vport(attr))
237 return esw_setup_decap_indir(esw, attr);
238 return 0;
239 }
240
241 static void
esw_setup_accept_dest(struct mlx5_flow_destination * dest,struct mlx5_flow_act * flow_act,struct mlx5_fs_chains * chains,int i)242 esw_setup_accept_dest(struct mlx5_flow_destination *dest, struct mlx5_flow_act *flow_act,
243 struct mlx5_fs_chains *chains, int i)
244 {
245 if (mlx5_chains_ignore_flow_level_supported(chains))
246 flow_act->flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
247 dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
248 dest[i].ft = mlx5_chains_get_tc_end_ft(chains);
249 }
250
251 static void
esw_setup_slow_path_dest(struct mlx5_flow_destination * dest,struct mlx5_flow_act * flow_act,struct mlx5_eswitch * esw,int i)252 esw_setup_slow_path_dest(struct mlx5_flow_destination *dest, struct mlx5_flow_act *flow_act,
253 struct mlx5_eswitch *esw, int i)
254 {
255 if (MLX5_CAP_ESW_FLOWTABLE_FDB(esw->dev, ignore_flow_level))
256 flow_act->flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
257 dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
258 dest[i].ft = mlx5_eswitch_get_slow_fdb(esw);
259 }
260
261 static int
esw_setup_chain_dest(struct mlx5_flow_destination * dest,struct mlx5_flow_act * flow_act,struct mlx5_fs_chains * chains,u32 chain,u32 prio,u32 level,int i)262 esw_setup_chain_dest(struct mlx5_flow_destination *dest,
263 struct mlx5_flow_act *flow_act,
264 struct mlx5_fs_chains *chains,
265 u32 chain, u32 prio, u32 level,
266 int i)
267 {
268 struct mlx5_flow_table *ft;
269
270 flow_act->flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
271 ft = mlx5_chains_get_table(chains, chain, prio, level);
272 if (IS_ERR(ft))
273 return PTR_ERR(ft);
274
275 dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
276 dest[i].ft = ft;
277 return 0;
278 }
279
esw_put_dest_tables_loop(struct mlx5_eswitch * esw,struct mlx5_flow_attr * attr,int from,int to)280 static void esw_put_dest_tables_loop(struct mlx5_eswitch *esw, struct mlx5_flow_attr *attr,
281 int from, int to)
282 {
283 struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
284 struct mlx5_fs_chains *chains = esw_chains(esw);
285 int i;
286
287 for (i = from; i < to; i++)
288 if (esw_attr->dests[i].flags & MLX5_ESW_DEST_CHAIN_WITH_SRC_PORT_CHANGE)
289 mlx5_chains_put_table(chains, 0, 1, 0);
290 else if (mlx5_esw_indir_table_needed(esw, attr, esw_attr->dests[i].rep->vport,
291 esw_attr->dests[i].mdev))
292 mlx5_esw_indir_table_put(esw, esw_attr->dests[i].rep->vport,
293 false);
294 }
295
296 static bool
esw_is_chain_src_port_rewrite(struct mlx5_eswitch * esw,struct mlx5_esw_flow_attr * esw_attr)297 esw_is_chain_src_port_rewrite(struct mlx5_eswitch *esw, struct mlx5_esw_flow_attr *esw_attr)
298 {
299 int i;
300
301 for (i = esw_attr->split_count; i < esw_attr->out_count; i++)
302 if (esw_attr->dests[i].flags & MLX5_ESW_DEST_CHAIN_WITH_SRC_PORT_CHANGE)
303 return true;
304 return false;
305 }
306
307 static int
esw_setup_chain_src_port_rewrite(struct mlx5_flow_destination * dest,struct mlx5_flow_act * flow_act,struct mlx5_eswitch * esw,struct mlx5_fs_chains * chains,struct mlx5_flow_attr * attr,int * i)308 esw_setup_chain_src_port_rewrite(struct mlx5_flow_destination *dest,
309 struct mlx5_flow_act *flow_act,
310 struct mlx5_eswitch *esw,
311 struct mlx5_fs_chains *chains,
312 struct mlx5_flow_attr *attr,
313 int *i)
314 {
315 struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
316 int err;
317
318 if (!(attr->flags & MLX5_ATTR_FLAG_SRC_REWRITE))
319 return -EOPNOTSUPP;
320
321 /* flow steering cannot handle more than one dest with the same ft
322 * in a single flow
323 */
324 if (esw_attr->out_count - esw_attr->split_count > 1)
325 return -EOPNOTSUPP;
326
327 err = esw_setup_chain_dest(dest, flow_act, chains, attr->dest_chain, 1, 0, *i);
328 if (err)
329 return err;
330
331 if (esw_attr->dests[esw_attr->split_count].pkt_reformat) {
332 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT;
333 flow_act->pkt_reformat = esw_attr->dests[esw_attr->split_count].pkt_reformat;
334 }
335 (*i)++;
336
337 return 0;
338 }
339
esw_cleanup_chain_src_port_rewrite(struct mlx5_eswitch * esw,struct mlx5_flow_attr * attr)340 static void esw_cleanup_chain_src_port_rewrite(struct mlx5_eswitch *esw,
341 struct mlx5_flow_attr *attr)
342 {
343 struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
344
345 esw_put_dest_tables_loop(esw, attr, esw_attr->split_count, esw_attr->out_count);
346 }
347
348 static bool
esw_is_indir_table(struct mlx5_eswitch * esw,struct mlx5_flow_attr * attr)349 esw_is_indir_table(struct mlx5_eswitch *esw, struct mlx5_flow_attr *attr)
350 {
351 struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
352 bool result = false;
353 int i;
354
355 /* Indirect table is supported only for flows with in_port uplink
356 * and the destination is vport on the same eswitch as the uplink,
357 * return false in case at least one of destinations doesn't meet
358 * this criteria.
359 */
360 for (i = esw_attr->split_count; i < esw_attr->out_count; i++) {
361 if (esw_attr->dests[i].rep &&
362 mlx5_esw_indir_table_needed(esw, attr, esw_attr->dests[i].rep->vport,
363 esw_attr->dests[i].mdev)) {
364 result = true;
365 } else {
366 result = false;
367 break;
368 }
369 }
370 return result;
371 }
372
373 static int
esw_setup_indir_table(struct mlx5_flow_destination * dest,struct mlx5_flow_act * flow_act,struct mlx5_eswitch * esw,struct mlx5_flow_attr * attr,int * i)374 esw_setup_indir_table(struct mlx5_flow_destination *dest,
375 struct mlx5_flow_act *flow_act,
376 struct mlx5_eswitch *esw,
377 struct mlx5_flow_attr *attr,
378 int *i)
379 {
380 struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
381 int j, err;
382
383 if (!(attr->flags & MLX5_ATTR_FLAG_SRC_REWRITE))
384 return -EOPNOTSUPP;
385
386 for (j = esw_attr->split_count; j < esw_attr->out_count; j++, (*i)++) {
387 flow_act->flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
388 dest[*i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
389
390 dest[*i].ft = mlx5_esw_indir_table_get(esw, attr,
391 esw_attr->dests[j].rep->vport, false);
392 if (IS_ERR(dest[*i].ft)) {
393 err = PTR_ERR(dest[*i].ft);
394 goto err_indir_tbl_get;
395 }
396 }
397
398 if (mlx5_esw_indir_table_decap_vport(attr)) {
399 err = esw_setup_decap_indir(esw, attr);
400 if (err)
401 goto err_indir_tbl_get;
402 }
403
404 return 0;
405
406 err_indir_tbl_get:
407 esw_put_dest_tables_loop(esw, attr, esw_attr->split_count, j);
408 return err;
409 }
410
esw_cleanup_indir_table(struct mlx5_eswitch * esw,struct mlx5_flow_attr * attr)411 static void esw_cleanup_indir_table(struct mlx5_eswitch *esw, struct mlx5_flow_attr *attr)
412 {
413 struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
414
415 esw_put_dest_tables_loop(esw, attr, esw_attr->split_count, esw_attr->out_count);
416 esw_cleanup_decap_indir(esw, attr);
417 }
418
419 static void
esw_cleanup_chain_dest(struct mlx5_fs_chains * chains,u32 chain,u32 prio,u32 level)420 esw_cleanup_chain_dest(struct mlx5_fs_chains *chains, u32 chain, u32 prio, u32 level)
421 {
422 mlx5_chains_put_table(chains, chain, prio, level);
423 }
424
esw_same_vhca_id(struct mlx5_core_dev * mdev1,struct mlx5_core_dev * mdev2)425 static bool esw_same_vhca_id(struct mlx5_core_dev *mdev1, struct mlx5_core_dev *mdev2)
426 {
427 return MLX5_CAP_GEN(mdev1, vhca_id) == MLX5_CAP_GEN(mdev2, vhca_id);
428 }
429
esw_setup_uplink_fwd_ipsec_needed(struct mlx5_eswitch * esw,struct mlx5_esw_flow_attr * esw_attr,int attr_idx)430 static bool esw_setup_uplink_fwd_ipsec_needed(struct mlx5_eswitch *esw,
431 struct mlx5_esw_flow_attr *esw_attr,
432 int attr_idx)
433 {
434 if (esw->offloads.ft_ipsec_tx_pol &&
435 esw_attr->dests[attr_idx].rep &&
436 esw_attr->dests[attr_idx].rep->vport == MLX5_VPORT_UPLINK &&
437 /* To be aligned with software, encryption is needed only for tunnel device */
438 (esw_attr->dests[attr_idx].flags & MLX5_ESW_DEST_ENCAP_VALID) &&
439 esw_attr->dests[attr_idx].rep != esw_attr->in_rep &&
440 esw_same_vhca_id(esw_attr->dests[attr_idx].mdev, esw->dev))
441 return true;
442
443 return false;
444 }
445
esw_flow_dests_fwd_ipsec_check(struct mlx5_eswitch * esw,struct mlx5_esw_flow_attr * esw_attr)446 static bool esw_flow_dests_fwd_ipsec_check(struct mlx5_eswitch *esw,
447 struct mlx5_esw_flow_attr *esw_attr)
448 {
449 int i;
450
451 if (!esw->offloads.ft_ipsec_tx_pol)
452 return true;
453
454 for (i = 0; i < esw_attr->split_count; i++)
455 if (esw_setup_uplink_fwd_ipsec_needed(esw, esw_attr, i))
456 return false;
457
458 for (i = esw_attr->split_count; i < esw_attr->out_count; i++)
459 if (esw_setup_uplink_fwd_ipsec_needed(esw, esw_attr, i) &&
460 (esw_attr->out_count - esw_attr->split_count > 1))
461 return false;
462
463 return true;
464 }
465
466 static void
esw_setup_dest_fwd_vport(struct mlx5_flow_destination * dest,struct mlx5_flow_act * flow_act,struct mlx5_eswitch * esw,struct mlx5_esw_flow_attr * esw_attr,int attr_idx,int dest_idx,bool pkt_reformat)467 esw_setup_dest_fwd_vport(struct mlx5_flow_destination *dest, struct mlx5_flow_act *flow_act,
468 struct mlx5_eswitch *esw, struct mlx5_esw_flow_attr *esw_attr,
469 int attr_idx, int dest_idx, bool pkt_reformat)
470 {
471 dest[dest_idx].type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
472 dest[dest_idx].vport.num = esw_attr->dests[attr_idx].rep->vport;
473 if (MLX5_CAP_ESW(esw->dev, merged_eswitch)) {
474 dest[dest_idx].vport.vhca_id =
475 MLX5_CAP_GEN(esw_attr->dests[attr_idx].mdev, vhca_id);
476 dest[dest_idx].vport.flags |= MLX5_FLOW_DEST_VPORT_VHCA_ID;
477 if (dest[dest_idx].vport.num == MLX5_VPORT_UPLINK &&
478 mlx5_lag_is_mpesw(esw->dev))
479 dest[dest_idx].type = MLX5_FLOW_DESTINATION_TYPE_UPLINK;
480 }
481 if (esw_attr->dests[attr_idx].flags & MLX5_ESW_DEST_ENCAP_VALID) {
482 if (pkt_reformat) {
483 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT;
484 flow_act->pkt_reformat = esw_attr->dests[attr_idx].pkt_reformat;
485 }
486 dest[dest_idx].vport.flags |= MLX5_FLOW_DEST_VPORT_REFORMAT_ID;
487 dest[dest_idx].vport.pkt_reformat = esw_attr->dests[attr_idx].pkt_reformat;
488 }
489 }
490
491 static void
esw_setup_dest_fwd_ipsec(struct mlx5_flow_destination * dest,struct mlx5_flow_act * flow_act,struct mlx5_eswitch * esw,struct mlx5_esw_flow_attr * esw_attr,int attr_idx,int dest_idx,bool pkt_reformat)492 esw_setup_dest_fwd_ipsec(struct mlx5_flow_destination *dest, struct mlx5_flow_act *flow_act,
493 struct mlx5_eswitch *esw, struct mlx5_esw_flow_attr *esw_attr,
494 int attr_idx, int dest_idx, bool pkt_reformat)
495 {
496 dest[dest_idx].ft = esw->offloads.ft_ipsec_tx_pol;
497 dest[dest_idx].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
498 if (pkt_reformat &&
499 esw_attr->dests[attr_idx].flags & MLX5_ESW_DEST_ENCAP_VALID) {
500 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT;
501 flow_act->pkt_reformat = esw_attr->dests[attr_idx].pkt_reformat;
502 }
503 }
504
505 static void
esw_setup_vport_dest(struct mlx5_flow_destination * dest,struct mlx5_flow_act * flow_act,struct mlx5_eswitch * esw,struct mlx5_esw_flow_attr * esw_attr,int attr_idx,int dest_idx,bool pkt_reformat)506 esw_setup_vport_dest(struct mlx5_flow_destination *dest, struct mlx5_flow_act *flow_act,
507 struct mlx5_eswitch *esw, struct mlx5_esw_flow_attr *esw_attr,
508 int attr_idx, int dest_idx, bool pkt_reformat)
509 {
510 if (esw_setup_uplink_fwd_ipsec_needed(esw, esw_attr, attr_idx))
511 esw_setup_dest_fwd_ipsec(dest, flow_act, esw, esw_attr,
512 attr_idx, dest_idx, pkt_reformat);
513 else
514 esw_setup_dest_fwd_vport(dest, flow_act, esw, esw_attr,
515 attr_idx, dest_idx, pkt_reformat);
516 }
517
518 static int
esw_setup_vport_dests(struct mlx5_flow_destination * dest,struct mlx5_flow_act * flow_act,struct mlx5_eswitch * esw,struct mlx5_esw_flow_attr * esw_attr,int i)519 esw_setup_vport_dests(struct mlx5_flow_destination *dest, struct mlx5_flow_act *flow_act,
520 struct mlx5_eswitch *esw, struct mlx5_esw_flow_attr *esw_attr,
521 int i)
522 {
523 int j;
524
525 for (j = esw_attr->split_count; j < esw_attr->out_count; j++, i++)
526 esw_setup_vport_dest(dest, flow_act, esw, esw_attr, j, i, true);
527 return i;
528 }
529
530 static bool
esw_src_port_rewrite_supported(struct mlx5_eswitch * esw)531 esw_src_port_rewrite_supported(struct mlx5_eswitch *esw)
532 {
533 return MLX5_CAP_GEN(esw->dev, reg_c_preserve) &&
534 mlx5_eswitch_vport_match_metadata_enabled(esw) &&
535 MLX5_CAP_ESW_FLOWTABLE_FDB(esw->dev, ignore_flow_level);
536 }
537
538 static bool
esw_dests_to_vf_pf_vports(struct mlx5_flow_destination * dests,int max_dest)539 esw_dests_to_vf_pf_vports(struct mlx5_flow_destination *dests, int max_dest)
540 {
541 bool vf_dest = false, pf_dest = false;
542 int i;
543
544 for (i = 0; i < max_dest; i++) {
545 if (dests[i].type != MLX5_FLOW_DESTINATION_TYPE_VPORT)
546 continue;
547
548 if (dests[i].vport.num == MLX5_VPORT_UPLINK)
549 pf_dest = true;
550 else
551 vf_dest = true;
552
553 if (vf_dest && pf_dest)
554 return true;
555 }
556
557 return false;
558 }
559
560 static int
esw_setup_dests(struct mlx5_flow_destination * dest,struct mlx5_flow_act * flow_act,struct mlx5_eswitch * esw,struct mlx5_flow_attr * attr,struct mlx5_flow_spec * spec,int * i)561 esw_setup_dests(struct mlx5_flow_destination *dest,
562 struct mlx5_flow_act *flow_act,
563 struct mlx5_eswitch *esw,
564 struct mlx5_flow_attr *attr,
565 struct mlx5_flow_spec *spec,
566 int *i)
567 {
568 struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
569 struct mlx5_fs_chains *chains = esw_chains(esw);
570 int err = 0;
571
572 if (!mlx5_eswitch_termtbl_required(esw, attr, flow_act, spec) &&
573 esw_src_port_rewrite_supported(esw))
574 attr->flags |= MLX5_ATTR_FLAG_SRC_REWRITE;
575
576 if (attr->flags & MLX5_ATTR_FLAG_SLOW_PATH) {
577 esw_setup_slow_path_dest(dest, flow_act, esw, *i);
578 (*i)++;
579 goto out;
580 }
581
582 if (attr->flags & MLX5_ATTR_FLAG_SAMPLE) {
583 esw_setup_sampler_dest(dest, flow_act, attr->sample_attr.sampler_id, *i);
584 (*i)++;
585 } else if (attr->flags & MLX5_ATTR_FLAG_ACCEPT) {
586 esw_setup_accept_dest(dest, flow_act, chains, *i);
587 (*i)++;
588 } else if (attr->flags & MLX5_ATTR_FLAG_MTU) {
589 err = esw_setup_mtu_dest(dest, &attr->meter_attr, *i);
590 (*i)++;
591 } else if (esw_is_indir_table(esw, attr)) {
592 err = esw_setup_indir_table(dest, flow_act, esw, attr, i);
593 } else if (esw_is_chain_src_port_rewrite(esw, esw_attr)) {
594 err = esw_setup_chain_src_port_rewrite(dest, flow_act, esw, chains, attr, i);
595 } else {
596 *i = esw_setup_vport_dests(dest, flow_act, esw, esw_attr, *i);
597
598 if (attr->dest_ft) {
599 err = esw_setup_ft_dest(dest, flow_act, esw, attr, *i);
600 (*i)++;
601 } else if (attr->dest_chain) {
602 err = esw_setup_chain_dest(dest, flow_act, chains, attr->dest_chain,
603 1, 0, *i);
604 (*i)++;
605 }
606 }
607
608 out:
609 return err;
610 }
611
612 static void
esw_cleanup_dests(struct mlx5_eswitch * esw,struct mlx5_flow_attr * attr)613 esw_cleanup_dests(struct mlx5_eswitch *esw,
614 struct mlx5_flow_attr *attr)
615 {
616 struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
617 struct mlx5_fs_chains *chains = esw_chains(esw);
618
619 if (attr->dest_ft) {
620 esw_cleanup_decap_indir(esw, attr);
621 } else if (!mlx5e_tc_attr_flags_skip(attr->flags)) {
622 if (attr->dest_chain)
623 esw_cleanup_chain_dest(chains, attr->dest_chain, 1, 0);
624 else if (esw_is_indir_table(esw, attr))
625 esw_cleanup_indir_table(esw, attr);
626 else if (esw_is_chain_src_port_rewrite(esw, esw_attr))
627 esw_cleanup_chain_src_port_rewrite(esw, attr);
628 }
629 }
630
631 static void
esw_setup_meter(struct mlx5_flow_attr * attr,struct mlx5_flow_act * flow_act)632 esw_setup_meter(struct mlx5_flow_attr *attr, struct mlx5_flow_act *flow_act)
633 {
634 struct mlx5e_flow_meter_handle *meter;
635
636 meter = attr->meter_attr.meter;
637 flow_act->exe_aso.type = attr->exe_aso_type;
638 flow_act->exe_aso.object_id = meter->obj_id;
639 flow_act->exe_aso.flow_meter.meter_idx = meter->idx;
640 flow_act->exe_aso.flow_meter.init_color = MLX5_FLOW_METER_COLOR_GREEN;
641 /* use metadata reg 5 for packet color */
642 flow_act->exe_aso.return_reg_id = 5;
643 }
644
645 struct mlx5_flow_handle *
mlx5_eswitch_add_offloaded_rule(struct mlx5_eswitch * esw,struct mlx5_flow_spec * spec,struct mlx5_flow_attr * attr)646 mlx5_eswitch_add_offloaded_rule(struct mlx5_eswitch *esw,
647 struct mlx5_flow_spec *spec,
648 struct mlx5_flow_attr *attr)
649 {
650 struct mlx5_flow_act flow_act = { .flags = FLOW_ACT_NO_APPEND, };
651 struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
652 struct mlx5_fs_chains *chains = esw_chains(esw);
653 bool split = !!(esw_attr->split_count);
654 struct mlx5_vport_tbl_attr fwd_attr;
655 struct mlx5_flow_destination *dest;
656 struct mlx5_flow_handle *rule;
657 struct mlx5_flow_table *fdb;
658 int i = 0;
659
660 if (esw->mode != MLX5_ESWITCH_OFFLOADS)
661 return ERR_PTR(-EOPNOTSUPP);
662
663 if (!mlx5_eswitch_vlan_actions_supported(esw->dev, 1))
664 return ERR_PTR(-EOPNOTSUPP);
665
666 if (!esw_flow_dests_fwd_ipsec_check(esw, esw_attr))
667 return ERR_PTR(-EOPNOTSUPP);
668
669 dest = kcalloc(MLX5_MAX_FLOW_FWD_VPORTS + 1, sizeof(*dest), GFP_KERNEL);
670 if (!dest)
671 return ERR_PTR(-ENOMEM);
672
673 flow_act.action = attr->action;
674
675 if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH) {
676 flow_act.vlan[0].ethtype = ntohs(esw_attr->vlan_proto[0]);
677 flow_act.vlan[0].vid = esw_attr->vlan_vid[0];
678 flow_act.vlan[0].prio = esw_attr->vlan_prio[0];
679 if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH_2) {
680 flow_act.vlan[1].ethtype = ntohs(esw_attr->vlan_proto[1]);
681 flow_act.vlan[1].vid = esw_attr->vlan_vid[1];
682 flow_act.vlan[1].prio = esw_attr->vlan_prio[1];
683 }
684 }
685
686 mlx5_eswitch_set_rule_flow_source(esw, spec, esw_attr);
687
688 if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
689 int err;
690
691 err = esw_setup_dests(dest, &flow_act, esw, attr, spec, &i);
692 if (err) {
693 rule = ERR_PTR(err);
694 goto err_create_goto_table;
695 }
696
697 /* Header rewrite with combined wire+loopback in FDB is not allowed */
698 if ((flow_act.action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) &&
699 esw_dests_to_vf_pf_vports(dest, i)) {
700 esw_warn(esw->dev,
701 "FDB: Header rewrite with forwarding to both PF and VF is not allowed\n");
702 rule = ERR_PTR(-EINVAL);
703 goto err_esw_get;
704 }
705 }
706
707 if (esw_attr->decap_pkt_reformat)
708 flow_act.pkt_reformat = esw_attr->decap_pkt_reformat;
709
710 if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
711 dest[i].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
712 dest[i].counter_id = mlx5_fc_id(attr->counter);
713 i++;
714 }
715
716 if (attr->outer_match_level != MLX5_MATCH_NONE)
717 spec->match_criteria_enable |= MLX5_MATCH_OUTER_HEADERS;
718 if (attr->inner_match_level != MLX5_MATCH_NONE)
719 spec->match_criteria_enable |= MLX5_MATCH_INNER_HEADERS;
720
721 if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
722 flow_act.modify_hdr = attr->modify_hdr;
723
724 if ((flow_act.action & MLX5_FLOW_CONTEXT_ACTION_EXECUTE_ASO) &&
725 attr->exe_aso_type == MLX5_EXE_ASO_FLOW_METER)
726 esw_setup_meter(attr, &flow_act);
727
728 if (split) {
729 fwd_attr.chain = attr->chain;
730 fwd_attr.prio = attr->prio;
731 fwd_attr.vport = esw_attr->in_rep->vport;
732 fwd_attr.vport_ns = &mlx5_esw_vport_tbl_mirror_ns;
733
734 fdb = mlx5_esw_vporttbl_get(esw, &fwd_attr);
735 } else {
736 if (attr->chain || attr->prio)
737 fdb = mlx5_chains_get_table(chains, attr->chain,
738 attr->prio, 0);
739 else
740 fdb = attr->ft;
741
742 if (!(attr->flags & MLX5_ATTR_FLAG_NO_IN_PORT))
743 mlx5_eswitch_set_rule_source_port(esw, spec, attr,
744 esw_attr->in_mdev->priv.eswitch,
745 esw_attr->in_rep->vport);
746 }
747 if (IS_ERR(fdb)) {
748 rule = ERR_CAST(fdb);
749 goto err_esw_get;
750 }
751
752 if (!i) {
753 kfree(dest);
754 dest = NULL;
755 }
756
757 if (mlx5_eswitch_termtbl_required(esw, attr, &flow_act, spec))
758 rule = mlx5_eswitch_add_termtbl_rule(esw, fdb, spec, esw_attr,
759 &flow_act, dest, i);
760 else
761 rule = mlx5_add_flow_rules(fdb, spec, &flow_act, dest, i);
762 if (IS_ERR(rule))
763 goto err_add_rule;
764 else
765 atomic64_inc(&esw->offloads.num_flows);
766
767 kfree(dest);
768 return rule;
769
770 err_add_rule:
771 if (split)
772 mlx5_esw_vporttbl_put(esw, &fwd_attr);
773 else if (attr->chain || attr->prio)
774 mlx5_chains_put_table(chains, attr->chain, attr->prio, 0);
775 err_esw_get:
776 esw_cleanup_dests(esw, attr);
777 err_create_goto_table:
778 kfree(dest);
779 return rule;
780 }
781
782 struct mlx5_flow_handle *
mlx5_eswitch_add_fwd_rule(struct mlx5_eswitch * esw,struct mlx5_flow_spec * spec,struct mlx5_flow_attr * attr)783 mlx5_eswitch_add_fwd_rule(struct mlx5_eswitch *esw,
784 struct mlx5_flow_spec *spec,
785 struct mlx5_flow_attr *attr)
786 {
787 struct mlx5_flow_act flow_act = { .flags = FLOW_ACT_NO_APPEND, };
788 struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
789 struct mlx5_fs_chains *chains = esw_chains(esw);
790 struct mlx5_vport_tbl_attr fwd_attr;
791 struct mlx5_flow_destination *dest;
792 struct mlx5_flow_table *fast_fdb;
793 struct mlx5_flow_table *fwd_fdb;
794 struct mlx5_flow_handle *rule;
795 int i, err = 0;
796
797 dest = kcalloc(MLX5_MAX_FLOW_FWD_VPORTS + 1, sizeof(*dest), GFP_KERNEL);
798 if (!dest)
799 return ERR_PTR(-ENOMEM);
800
801 fast_fdb = mlx5_chains_get_table(chains, attr->chain, attr->prio, 0);
802 if (IS_ERR(fast_fdb)) {
803 rule = ERR_CAST(fast_fdb);
804 goto err_get_fast;
805 }
806
807 fwd_attr.chain = attr->chain;
808 fwd_attr.prio = attr->prio;
809 fwd_attr.vport = esw_attr->in_rep->vport;
810 fwd_attr.vport_ns = &mlx5_esw_vport_tbl_mirror_ns;
811 fwd_fdb = mlx5_esw_vporttbl_get(esw, &fwd_attr);
812 if (IS_ERR(fwd_fdb)) {
813 rule = ERR_CAST(fwd_fdb);
814 goto err_get_fwd;
815 }
816
817 flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
818 for (i = 0; i < esw_attr->split_count; i++) {
819 if (esw_attr->dests[i].flags & MLX5_ESW_DEST_CHAIN_WITH_SRC_PORT_CHANGE)
820 /* Source port rewrite (forward to ovs internal port or statck device) isn't
821 * supported in the rule of split action.
822 */
823 err = -EOPNOTSUPP;
824 else
825 esw_setup_vport_dest(dest, &flow_act, esw, esw_attr, i, i, false);
826
827 if (err) {
828 rule = ERR_PTR(err);
829 goto err_chain_src_rewrite;
830 }
831 }
832 dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
833 dest[i].ft = fwd_fdb;
834 i++;
835
836 mlx5_eswitch_set_rule_source_port(esw, spec, attr,
837 esw_attr->in_mdev->priv.eswitch,
838 esw_attr->in_rep->vport);
839
840 if (attr->outer_match_level != MLX5_MATCH_NONE)
841 spec->match_criteria_enable |= MLX5_MATCH_OUTER_HEADERS;
842
843 flow_act.flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
844 rule = mlx5_add_flow_rules(fast_fdb, spec, &flow_act, dest, i);
845
846 if (IS_ERR(rule)) {
847 i = esw_attr->split_count;
848 goto err_chain_src_rewrite;
849 }
850
851 atomic64_inc(&esw->offloads.num_flows);
852
853 kfree(dest);
854 return rule;
855 err_chain_src_rewrite:
856 mlx5_esw_vporttbl_put(esw, &fwd_attr);
857 err_get_fwd:
858 mlx5_chains_put_table(chains, attr->chain, attr->prio, 0);
859 err_get_fast:
860 kfree(dest);
861 return rule;
862 }
863
864 static void
__mlx5_eswitch_del_rule(struct mlx5_eswitch * esw,struct mlx5_flow_handle * rule,struct mlx5_flow_attr * attr,bool fwd_rule)865 __mlx5_eswitch_del_rule(struct mlx5_eswitch *esw,
866 struct mlx5_flow_handle *rule,
867 struct mlx5_flow_attr *attr,
868 bool fwd_rule)
869 {
870 struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
871 struct mlx5_fs_chains *chains = esw_chains(esw);
872 bool split = (esw_attr->split_count > 0);
873 struct mlx5_vport_tbl_attr fwd_attr;
874 int i;
875
876 mlx5_del_flow_rules(rule);
877
878 if (!mlx5e_tc_attr_flags_skip(attr->flags)) {
879 /* unref the term table */
880 for (i = 0; i < MLX5_MAX_FLOW_FWD_VPORTS; i++) {
881 if (esw_attr->dests[i].termtbl)
882 mlx5_eswitch_termtbl_put(esw, esw_attr->dests[i].termtbl);
883 }
884 }
885
886 atomic64_dec(&esw->offloads.num_flows);
887
888 if (fwd_rule || split) {
889 fwd_attr.chain = attr->chain;
890 fwd_attr.prio = attr->prio;
891 fwd_attr.vport = esw_attr->in_rep->vport;
892 fwd_attr.vport_ns = &mlx5_esw_vport_tbl_mirror_ns;
893 }
894
895 if (fwd_rule) {
896 mlx5_esw_vporttbl_put(esw, &fwd_attr);
897 mlx5_chains_put_table(chains, attr->chain, attr->prio, 0);
898 } else {
899 if (split)
900 mlx5_esw_vporttbl_put(esw, &fwd_attr);
901 else if (attr->chain || attr->prio)
902 mlx5_chains_put_table(chains, attr->chain, attr->prio, 0);
903 esw_cleanup_dests(esw, attr);
904 }
905 }
906
907 void
mlx5_eswitch_del_offloaded_rule(struct mlx5_eswitch * esw,struct mlx5_flow_handle * rule,struct mlx5_flow_attr * attr)908 mlx5_eswitch_del_offloaded_rule(struct mlx5_eswitch *esw,
909 struct mlx5_flow_handle *rule,
910 struct mlx5_flow_attr *attr)
911 {
912 __mlx5_eswitch_del_rule(esw, rule, attr, false);
913 }
914
915 void
mlx5_eswitch_del_fwd_rule(struct mlx5_eswitch * esw,struct mlx5_flow_handle * rule,struct mlx5_flow_attr * attr)916 mlx5_eswitch_del_fwd_rule(struct mlx5_eswitch *esw,
917 struct mlx5_flow_handle *rule,
918 struct mlx5_flow_attr *attr)
919 {
920 __mlx5_eswitch_del_rule(esw, rule, attr, true);
921 }
922
923 struct mlx5_flow_handle *
mlx5_eswitch_add_send_to_vport_rule(struct mlx5_eswitch * on_esw,struct mlx5_eswitch * from_esw,struct mlx5_eswitch_rep * rep,u32 sqn)924 mlx5_eswitch_add_send_to_vport_rule(struct mlx5_eswitch *on_esw,
925 struct mlx5_eswitch *from_esw,
926 struct mlx5_eswitch_rep *rep,
927 u32 sqn)
928 {
929 struct mlx5_flow_act flow_act = {0};
930 struct mlx5_flow_destination dest = {};
931 struct mlx5_flow_handle *flow_rule;
932 struct mlx5_flow_spec *spec;
933 void *misc;
934 u16 vport;
935
936 spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
937 if (!spec) {
938 flow_rule = ERR_PTR(-ENOMEM);
939 goto out;
940 }
941
942 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters);
943 MLX5_SET(fte_match_set_misc, misc, source_sqn, sqn);
944
945 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters);
946 MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_sqn);
947
948 spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS;
949
950 /* source vport is the esw manager */
951 vport = from_esw->manager_vport;
952
953 if (mlx5_eswitch_vport_match_metadata_enabled(on_esw)) {
954 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters_2);
955 MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
956 mlx5_eswitch_get_vport_metadata_for_match(from_esw, vport));
957
958 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters_2);
959 MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
960 mlx5_eswitch_get_vport_metadata_mask());
961
962 spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS_2;
963 } else {
964 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters);
965 MLX5_SET(fte_match_set_misc, misc, source_port, vport);
966
967 if (MLX5_CAP_ESW(on_esw->dev, merged_eswitch))
968 MLX5_SET(fte_match_set_misc, misc, source_eswitch_owner_vhca_id,
969 MLX5_CAP_GEN(from_esw->dev, vhca_id));
970
971 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters);
972 MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
973
974 if (MLX5_CAP_ESW(on_esw->dev, merged_eswitch))
975 MLX5_SET_TO_ONES(fte_match_set_misc, misc,
976 source_eswitch_owner_vhca_id);
977
978 spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS;
979 }
980
981 dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
982 dest.vport.num = rep->vport;
983 dest.vport.vhca_id = MLX5_CAP_GEN(rep->esw->dev, vhca_id);
984 dest.vport.flags |= MLX5_FLOW_DEST_VPORT_VHCA_ID;
985 flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
986
987 if (rep->vport == MLX5_VPORT_UPLINK && on_esw->offloads.ft_ipsec_tx_pol) {
988 dest.ft = on_esw->offloads.ft_ipsec_tx_pol;
989 flow_act.flags = FLOW_ACT_IGNORE_FLOW_LEVEL;
990 dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
991 } else {
992 dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
993 dest.vport.num = rep->vport;
994 dest.vport.vhca_id = MLX5_CAP_GEN(rep->esw->dev, vhca_id);
995 dest.vport.flags |= MLX5_FLOW_DEST_VPORT_VHCA_ID;
996 }
997
998 if (MLX5_CAP_ESW_FLOWTABLE(on_esw->dev, flow_source) &&
999 rep->vport == MLX5_VPORT_UPLINK)
1000 spec->flow_context.flow_source = MLX5_FLOW_CONTEXT_FLOW_SOURCE_LOCAL_VPORT;
1001
1002 flow_rule = mlx5_add_flow_rules(mlx5_eswitch_get_slow_fdb(on_esw),
1003 spec, &flow_act, &dest, 1);
1004 if (IS_ERR(flow_rule))
1005 esw_warn(on_esw->dev, "FDB: Failed to add send to vport rule err %ld\n",
1006 PTR_ERR(flow_rule));
1007 out:
1008 kvfree(spec);
1009 return flow_rule;
1010 }
1011 EXPORT_SYMBOL(mlx5_eswitch_add_send_to_vport_rule);
1012
mlx5_eswitch_del_send_to_vport_rule(struct mlx5_flow_handle * rule)1013 void mlx5_eswitch_del_send_to_vport_rule(struct mlx5_flow_handle *rule)
1014 {
1015 mlx5_del_flow_rules(rule);
1016 }
1017
mlx5_eswitch_del_send_to_vport_meta_rule(struct mlx5_flow_handle * rule)1018 void mlx5_eswitch_del_send_to_vport_meta_rule(struct mlx5_flow_handle *rule)
1019 {
1020 if (rule)
1021 mlx5_del_flow_rules(rule);
1022 }
1023
1024 struct mlx5_flow_handle *
mlx5_eswitch_add_send_to_vport_meta_rule(struct mlx5_eswitch * esw,u16 vport_num)1025 mlx5_eswitch_add_send_to_vport_meta_rule(struct mlx5_eswitch *esw, u16 vport_num)
1026 {
1027 struct mlx5_flow_destination dest = {};
1028 struct mlx5_flow_act flow_act = {0};
1029 struct mlx5_flow_handle *flow_rule;
1030 struct mlx5_flow_spec *spec;
1031
1032 spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
1033 if (!spec)
1034 return ERR_PTR(-ENOMEM);
1035
1036 MLX5_SET(fte_match_param, spec->match_criteria,
1037 misc_parameters_2.metadata_reg_c_0, mlx5_eswitch_get_vport_metadata_mask());
1038 MLX5_SET(fte_match_param, spec->match_criteria,
1039 misc_parameters_2.metadata_reg_c_1, ESW_TUN_MASK);
1040 MLX5_SET(fte_match_param, spec->match_value, misc_parameters_2.metadata_reg_c_1,
1041 ESW_TUN_SLOW_TABLE_GOTO_VPORT_MARK);
1042
1043 spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS_2;
1044 dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
1045 flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1046
1047 MLX5_SET(fte_match_param, spec->match_value, misc_parameters_2.metadata_reg_c_0,
1048 mlx5_eswitch_get_vport_metadata_for_match(esw, vport_num));
1049 dest.vport.num = vport_num;
1050
1051 flow_rule = mlx5_add_flow_rules(mlx5_eswitch_get_slow_fdb(esw),
1052 spec, &flow_act, &dest, 1);
1053 if (IS_ERR(flow_rule))
1054 esw_warn(esw->dev, "FDB: Failed to add send to vport meta rule vport %d, err %ld\n",
1055 vport_num, PTR_ERR(flow_rule));
1056
1057 kvfree(spec);
1058 return flow_rule;
1059 }
1060
mlx5_eswitch_reg_c1_loopback_supported(struct mlx5_eswitch * esw)1061 static bool mlx5_eswitch_reg_c1_loopback_supported(struct mlx5_eswitch *esw)
1062 {
1063 return MLX5_CAP_ESW_FLOWTABLE(esw->dev, fdb_to_vport_reg_c_id) &
1064 MLX5_FDB_TO_VPORT_REG_C_1;
1065 }
1066
esw_set_passing_vport_metadata(struct mlx5_eswitch * esw,bool enable)1067 static int esw_set_passing_vport_metadata(struct mlx5_eswitch *esw, bool enable)
1068 {
1069 u32 out[MLX5_ST_SZ_DW(query_esw_vport_context_out)] = {};
1070 u32 min[MLX5_ST_SZ_DW(modify_esw_vport_context_in)] = {};
1071 u32 in[MLX5_ST_SZ_DW(query_esw_vport_context_in)] = {};
1072 u8 curr, wanted;
1073 int err;
1074
1075 if (!mlx5_eswitch_reg_c1_loopback_supported(esw) &&
1076 !mlx5_eswitch_vport_match_metadata_enabled(esw))
1077 return 0;
1078
1079 MLX5_SET(query_esw_vport_context_in, in, opcode,
1080 MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT);
1081 err = mlx5_cmd_exec_inout(esw->dev, query_esw_vport_context, in, out);
1082 if (err)
1083 return err;
1084
1085 curr = MLX5_GET(query_esw_vport_context_out, out,
1086 esw_vport_context.fdb_to_vport_reg_c_id);
1087 wanted = MLX5_FDB_TO_VPORT_REG_C_0;
1088 if (mlx5_eswitch_reg_c1_loopback_supported(esw))
1089 wanted |= MLX5_FDB_TO_VPORT_REG_C_1;
1090
1091 if (enable)
1092 curr |= wanted;
1093 else
1094 curr &= ~wanted;
1095
1096 MLX5_SET(modify_esw_vport_context_in, min,
1097 esw_vport_context.fdb_to_vport_reg_c_id, curr);
1098 MLX5_SET(modify_esw_vport_context_in, min,
1099 field_select.fdb_to_vport_reg_c_id, 1);
1100
1101 err = mlx5_eswitch_modify_esw_vport_context(esw->dev, 0, false, min);
1102 if (!err) {
1103 if (enable && (curr & MLX5_FDB_TO_VPORT_REG_C_1))
1104 esw->flags |= MLX5_ESWITCH_REG_C1_LOOPBACK_ENABLED;
1105 else
1106 esw->flags &= ~MLX5_ESWITCH_REG_C1_LOOPBACK_ENABLED;
1107 }
1108
1109 return err;
1110 }
1111
peer_miss_rules_setup(struct mlx5_eswitch * esw,struct mlx5_core_dev * peer_dev,struct mlx5_flow_spec * spec,struct mlx5_flow_destination * dest)1112 static void peer_miss_rules_setup(struct mlx5_eswitch *esw,
1113 struct mlx5_core_dev *peer_dev,
1114 struct mlx5_flow_spec *spec,
1115 struct mlx5_flow_destination *dest)
1116 {
1117 void *misc;
1118
1119 if (mlx5_eswitch_vport_match_metadata_enabled(esw)) {
1120 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1121 misc_parameters_2);
1122 MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
1123 mlx5_eswitch_get_vport_metadata_mask());
1124
1125 spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS_2;
1126 } else {
1127 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1128 misc_parameters);
1129
1130 MLX5_SET(fte_match_set_misc, misc, source_eswitch_owner_vhca_id,
1131 MLX5_CAP_GEN(peer_dev, vhca_id));
1132
1133 spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS;
1134
1135 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1136 misc_parameters);
1137 MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
1138 MLX5_SET_TO_ONES(fte_match_set_misc, misc,
1139 source_eswitch_owner_vhca_id);
1140 }
1141
1142 dest->type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
1143 dest->vport.num = peer_dev->priv.eswitch->manager_vport;
1144 dest->vport.vhca_id = MLX5_CAP_GEN(peer_dev, vhca_id);
1145 dest->vport.flags |= MLX5_FLOW_DEST_VPORT_VHCA_ID;
1146 }
1147
esw_set_peer_miss_rule_source_port(struct mlx5_eswitch * esw,struct mlx5_eswitch * peer_esw,struct mlx5_flow_spec * spec,u16 vport)1148 static void esw_set_peer_miss_rule_source_port(struct mlx5_eswitch *esw,
1149 struct mlx5_eswitch *peer_esw,
1150 struct mlx5_flow_spec *spec,
1151 u16 vport)
1152 {
1153 void *misc;
1154
1155 if (mlx5_eswitch_vport_match_metadata_enabled(esw)) {
1156 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1157 misc_parameters_2);
1158 MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
1159 mlx5_eswitch_get_vport_metadata_for_match(peer_esw,
1160 vport));
1161 } else {
1162 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1163 misc_parameters);
1164 MLX5_SET(fte_match_set_misc, misc, source_port, vport);
1165 }
1166 }
1167
esw_add_fdb_peer_miss_rules(struct mlx5_eswitch * esw,struct mlx5_core_dev * peer_dev)1168 static int esw_add_fdb_peer_miss_rules(struct mlx5_eswitch *esw,
1169 struct mlx5_core_dev *peer_dev)
1170 {
1171 struct mlx5_flow_destination dest = {};
1172 struct mlx5_flow_act flow_act = {0};
1173 struct mlx5_flow_handle **flows;
1174 /* total vports is the same for both e-switches */
1175 int nvports = esw->total_vports;
1176 struct mlx5_flow_handle *flow;
1177 struct mlx5_flow_spec *spec;
1178 struct mlx5_vport *vport;
1179 unsigned long i;
1180 void *misc;
1181 int err;
1182
1183 if (!MLX5_VPORT_MANAGER(esw->dev) && !mlx5_core_is_ecpf_esw_manager(esw->dev))
1184 return 0;
1185
1186 spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
1187 if (!spec)
1188 return -ENOMEM;
1189
1190 peer_miss_rules_setup(esw, peer_dev, spec, &dest);
1191
1192 flows = kvcalloc(nvports, sizeof(*flows), GFP_KERNEL);
1193 if (!flows) {
1194 err = -ENOMEM;
1195 goto alloc_flows_err;
1196 }
1197
1198 flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1199 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1200 misc_parameters);
1201
1202 if (mlx5_core_is_ecpf_esw_manager(esw->dev)) {
1203 vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_PF);
1204 esw_set_peer_miss_rule_source_port(esw, peer_dev->priv.eswitch,
1205 spec, MLX5_VPORT_PF);
1206
1207 flow = mlx5_add_flow_rules(mlx5_eswitch_get_slow_fdb(esw),
1208 spec, &flow_act, &dest, 1);
1209 if (IS_ERR(flow)) {
1210 err = PTR_ERR(flow);
1211 goto add_pf_flow_err;
1212 }
1213 flows[vport->index] = flow;
1214 }
1215
1216 if (mlx5_ecpf_vport_exists(esw->dev)) {
1217 vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_ECPF);
1218 MLX5_SET(fte_match_set_misc, misc, source_port, MLX5_VPORT_ECPF);
1219 flow = mlx5_add_flow_rules(mlx5_eswitch_get_slow_fdb(esw),
1220 spec, &flow_act, &dest, 1);
1221 if (IS_ERR(flow)) {
1222 err = PTR_ERR(flow);
1223 goto add_ecpf_flow_err;
1224 }
1225 flows[vport->index] = flow;
1226 }
1227
1228 mlx5_esw_for_each_vf_vport(esw, i, vport, mlx5_core_max_vfs(esw->dev)) {
1229 esw_set_peer_miss_rule_source_port(esw,
1230 peer_dev->priv.eswitch,
1231 spec, vport->vport);
1232
1233 flow = mlx5_add_flow_rules(mlx5_eswitch_get_slow_fdb(esw),
1234 spec, &flow_act, &dest, 1);
1235 if (IS_ERR(flow)) {
1236 err = PTR_ERR(flow);
1237 goto add_vf_flow_err;
1238 }
1239 flows[vport->index] = flow;
1240 }
1241
1242 if (mlx5_core_ec_sriov_enabled(esw->dev)) {
1243 mlx5_esw_for_each_ec_vf_vport(esw, i, vport, mlx5_core_max_ec_vfs(esw->dev)) {
1244 if (i >= mlx5_core_max_ec_vfs(peer_dev))
1245 break;
1246 esw_set_peer_miss_rule_source_port(esw, peer_dev->priv.eswitch,
1247 spec, vport->vport);
1248 flow = mlx5_add_flow_rules(esw->fdb_table.offloads.slow_fdb,
1249 spec, &flow_act, &dest, 1);
1250 if (IS_ERR(flow)) {
1251 err = PTR_ERR(flow);
1252 goto add_ec_vf_flow_err;
1253 }
1254 flows[vport->index] = flow;
1255 }
1256 }
1257 esw->fdb_table.offloads.peer_miss_rules[mlx5_get_dev_index(peer_dev)] = flows;
1258
1259 kvfree(spec);
1260 return 0;
1261
1262 add_ec_vf_flow_err:
1263 mlx5_esw_for_each_ec_vf_vport(esw, i, vport, mlx5_core_max_ec_vfs(esw->dev)) {
1264 if (!flows[vport->index])
1265 continue;
1266 mlx5_del_flow_rules(flows[vport->index]);
1267 }
1268 add_vf_flow_err:
1269 mlx5_esw_for_each_vf_vport(esw, i, vport, mlx5_core_max_vfs(esw->dev)) {
1270 if (!flows[vport->index])
1271 continue;
1272 mlx5_del_flow_rules(flows[vport->index]);
1273 }
1274 if (mlx5_ecpf_vport_exists(esw->dev)) {
1275 vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_ECPF);
1276 mlx5_del_flow_rules(flows[vport->index]);
1277 }
1278 add_ecpf_flow_err:
1279 if (mlx5_core_is_ecpf_esw_manager(esw->dev)) {
1280 vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_PF);
1281 mlx5_del_flow_rules(flows[vport->index]);
1282 }
1283 add_pf_flow_err:
1284 esw_warn(esw->dev, "FDB: Failed to add peer miss flow rule err %d\n", err);
1285 kvfree(flows);
1286 alloc_flows_err:
1287 kvfree(spec);
1288 return err;
1289 }
1290
esw_del_fdb_peer_miss_rules(struct mlx5_eswitch * esw,struct mlx5_core_dev * peer_dev)1291 static void esw_del_fdb_peer_miss_rules(struct mlx5_eswitch *esw,
1292 struct mlx5_core_dev *peer_dev)
1293 {
1294 u16 peer_index = mlx5_get_dev_index(peer_dev);
1295 struct mlx5_flow_handle **flows;
1296 struct mlx5_vport *vport;
1297 unsigned long i;
1298
1299 flows = esw->fdb_table.offloads.peer_miss_rules[peer_index];
1300 if (!flows)
1301 return;
1302
1303 if (mlx5_core_ec_sriov_enabled(esw->dev)) {
1304 mlx5_esw_for_each_ec_vf_vport(esw, i, vport, mlx5_core_max_ec_vfs(esw->dev)) {
1305 /* The flow for a particular vport could be NULL if the other ECPF
1306 * has fewer or no VFs enabled
1307 */
1308 if (!flows[vport->index])
1309 continue;
1310 mlx5_del_flow_rules(flows[vport->index]);
1311 }
1312 }
1313
1314 mlx5_esw_for_each_vf_vport(esw, i, vport, mlx5_core_max_vfs(esw->dev))
1315 mlx5_del_flow_rules(flows[vport->index]);
1316
1317 if (mlx5_ecpf_vport_exists(esw->dev)) {
1318 vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_ECPF);
1319 mlx5_del_flow_rules(flows[vport->index]);
1320 }
1321
1322 if (mlx5_core_is_ecpf_esw_manager(esw->dev)) {
1323 vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_PF);
1324 mlx5_del_flow_rules(flows[vport->index]);
1325 }
1326
1327 kvfree(flows);
1328 esw->fdb_table.offloads.peer_miss_rules[peer_index] = NULL;
1329 }
1330
esw_add_fdb_miss_rule(struct mlx5_eswitch * esw)1331 static int esw_add_fdb_miss_rule(struct mlx5_eswitch *esw)
1332 {
1333 struct mlx5_flow_act flow_act = {0};
1334 struct mlx5_flow_destination dest = {};
1335 struct mlx5_flow_handle *flow_rule = NULL;
1336 struct mlx5_flow_spec *spec;
1337 void *headers_c;
1338 void *headers_v;
1339 int err = 0;
1340 u8 *dmac_c;
1341 u8 *dmac_v;
1342
1343 spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
1344 if (!spec) {
1345 err = -ENOMEM;
1346 goto out;
1347 }
1348
1349 spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
1350 headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1351 outer_headers);
1352 dmac_c = MLX5_ADDR_OF(fte_match_param, headers_c,
1353 outer_headers.dmac_47_16);
1354 dmac_c[0] = 0x01;
1355
1356 dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
1357 dest.vport.num = esw->manager_vport;
1358 flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1359
1360 flow_rule = mlx5_add_flow_rules(mlx5_eswitch_get_slow_fdb(esw),
1361 spec, &flow_act, &dest, 1);
1362 if (IS_ERR(flow_rule)) {
1363 err = PTR_ERR(flow_rule);
1364 esw_warn(esw->dev, "FDB: Failed to add unicast miss flow rule err %d\n", err);
1365 goto out;
1366 }
1367
1368 esw->fdb_table.offloads.miss_rule_uni = flow_rule;
1369
1370 headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1371 outer_headers);
1372 dmac_v = MLX5_ADDR_OF(fte_match_param, headers_v,
1373 outer_headers.dmac_47_16);
1374 dmac_v[0] = 0x01;
1375 flow_rule = mlx5_add_flow_rules(mlx5_eswitch_get_slow_fdb(esw),
1376 spec, &flow_act, &dest, 1);
1377 if (IS_ERR(flow_rule)) {
1378 err = PTR_ERR(flow_rule);
1379 esw_warn(esw->dev, "FDB: Failed to add multicast miss flow rule err %d\n", err);
1380 mlx5_del_flow_rules(esw->fdb_table.offloads.miss_rule_uni);
1381 goto out;
1382 }
1383
1384 esw->fdb_table.offloads.miss_rule_multi = flow_rule;
1385
1386 out:
1387 kvfree(spec);
1388 return err;
1389 }
1390
1391 struct mlx5_flow_handle *
esw_add_restore_rule(struct mlx5_eswitch * esw,u32 tag)1392 esw_add_restore_rule(struct mlx5_eswitch *esw, u32 tag)
1393 {
1394 struct mlx5_flow_act flow_act = { .flags = FLOW_ACT_NO_APPEND, };
1395 struct mlx5_flow_table *ft = esw->offloads.ft_offloads_restore;
1396 struct mlx5_flow_context *flow_context;
1397 struct mlx5_flow_handle *flow_rule;
1398 struct mlx5_flow_destination dest;
1399 struct mlx5_flow_spec *spec;
1400 void *misc;
1401
1402 if (!mlx5_eswitch_reg_c1_loopback_supported(esw))
1403 return ERR_PTR(-EOPNOTSUPP);
1404
1405 spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
1406 if (!spec)
1407 return ERR_PTR(-ENOMEM);
1408
1409 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1410 misc_parameters_2);
1411 MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
1412 ESW_REG_C0_USER_DATA_METADATA_MASK);
1413 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1414 misc_parameters_2);
1415 MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0, tag);
1416 spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS_2;
1417 flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
1418 MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
1419 flow_act.modify_hdr = esw->offloads.restore_copy_hdr_id;
1420
1421 flow_context = &spec->flow_context;
1422 flow_context->flags |= FLOW_CONTEXT_HAS_TAG;
1423 flow_context->flow_tag = tag;
1424 dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
1425 dest.ft = esw->offloads.ft_offloads;
1426
1427 flow_rule = mlx5_add_flow_rules(ft, spec, &flow_act, &dest, 1);
1428 kvfree(spec);
1429
1430 if (IS_ERR(flow_rule))
1431 esw_warn(esw->dev,
1432 "Failed to create restore rule for tag: %d, err(%d)\n",
1433 tag, (int)PTR_ERR(flow_rule));
1434
1435 return flow_rule;
1436 }
1437
1438 #define MAX_PF_SQ 256
1439 #define MAX_SQ_NVPORTS 32
1440
1441 void
mlx5_esw_set_flow_group_source_port(struct mlx5_eswitch * esw,u32 * flow_group_in,int match_params)1442 mlx5_esw_set_flow_group_source_port(struct mlx5_eswitch *esw,
1443 u32 *flow_group_in,
1444 int match_params)
1445 {
1446 void *match_criteria = MLX5_ADDR_OF(create_flow_group_in,
1447 flow_group_in,
1448 match_criteria);
1449
1450 if (mlx5_eswitch_vport_match_metadata_enabled(esw)) {
1451 MLX5_SET(create_flow_group_in, flow_group_in,
1452 match_criteria_enable,
1453 MLX5_MATCH_MISC_PARAMETERS_2 | match_params);
1454
1455 MLX5_SET(fte_match_param, match_criteria,
1456 misc_parameters_2.metadata_reg_c_0,
1457 mlx5_eswitch_get_vport_metadata_mask());
1458 } else {
1459 MLX5_SET(create_flow_group_in, flow_group_in,
1460 match_criteria_enable,
1461 MLX5_MATCH_MISC_PARAMETERS | match_params);
1462
1463 MLX5_SET_TO_ONES(fte_match_param, match_criteria,
1464 misc_parameters.source_port);
1465 }
1466 }
1467
1468 #if IS_ENABLED(CONFIG_MLX5_CLS_ACT)
esw_vport_tbl_put(struct mlx5_eswitch * esw)1469 static void esw_vport_tbl_put(struct mlx5_eswitch *esw)
1470 {
1471 struct mlx5_vport_tbl_attr attr;
1472 struct mlx5_vport *vport;
1473 unsigned long i;
1474
1475 attr.chain = 0;
1476 attr.prio = 1;
1477 mlx5_esw_for_each_vport(esw, i, vport) {
1478 attr.vport = vport->vport;
1479 attr.vport_ns = &mlx5_esw_vport_tbl_mirror_ns;
1480 mlx5_esw_vporttbl_put(esw, &attr);
1481 }
1482 }
1483
esw_vport_tbl_get(struct mlx5_eswitch * esw)1484 static int esw_vport_tbl_get(struct mlx5_eswitch *esw)
1485 {
1486 struct mlx5_vport_tbl_attr attr;
1487 struct mlx5_flow_table *fdb;
1488 struct mlx5_vport *vport;
1489 unsigned long i;
1490
1491 attr.chain = 0;
1492 attr.prio = 1;
1493 mlx5_esw_for_each_vport(esw, i, vport) {
1494 attr.vport = vport->vport;
1495 attr.vport_ns = &mlx5_esw_vport_tbl_mirror_ns;
1496 fdb = mlx5_esw_vporttbl_get(esw, &attr);
1497 if (IS_ERR(fdb))
1498 goto out;
1499 }
1500 return 0;
1501
1502 out:
1503 esw_vport_tbl_put(esw);
1504 return PTR_ERR(fdb);
1505 }
1506
1507 #define fdb_modify_header_fwd_to_table_supported(esw) \
1508 (MLX5_CAP_ESW_FLOWTABLE((esw)->dev, fdb_modify_header_fwd_to_table))
esw_init_chains_offload_flags(struct mlx5_eswitch * esw,u32 * flags)1509 static void esw_init_chains_offload_flags(struct mlx5_eswitch *esw, u32 *flags)
1510 {
1511 struct mlx5_core_dev *dev = esw->dev;
1512
1513 if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev, ignore_flow_level))
1514 *flags |= MLX5_CHAINS_IGNORE_FLOW_LEVEL_SUPPORTED;
1515
1516 if (!MLX5_CAP_ESW_FLOWTABLE(dev, multi_fdb_encap) &&
1517 esw->offloads.encap != DEVLINK_ESWITCH_ENCAP_MODE_NONE) {
1518 *flags &= ~MLX5_CHAINS_AND_PRIOS_SUPPORTED;
1519 esw_warn(dev, "Tc chains and priorities offload aren't supported, update firmware if needed\n");
1520 } else if (!mlx5_eswitch_reg_c1_loopback_enabled(esw)) {
1521 *flags &= ~MLX5_CHAINS_AND_PRIOS_SUPPORTED;
1522 esw_warn(dev, "Tc chains and priorities offload aren't supported\n");
1523 } else if (!fdb_modify_header_fwd_to_table_supported(esw)) {
1524 /* Disabled when ttl workaround is needed, e.g
1525 * when ESWITCH_IPV4_TTL_MODIFY_ENABLE = true in mlxconfig
1526 */
1527 esw_warn(dev,
1528 "Tc chains and priorities offload aren't supported, check firmware version, or mlxconfig settings\n");
1529 *flags &= ~MLX5_CHAINS_AND_PRIOS_SUPPORTED;
1530 } else {
1531 *flags |= MLX5_CHAINS_AND_PRIOS_SUPPORTED;
1532 esw_info(dev, "Supported tc chains and prios offload\n");
1533 }
1534
1535 if (esw->offloads.encap != DEVLINK_ESWITCH_ENCAP_MODE_NONE)
1536 *flags |= MLX5_CHAINS_FT_TUNNEL_SUPPORTED;
1537 }
1538
1539 static int
esw_chains_create(struct mlx5_eswitch * esw,struct mlx5_flow_table * miss_fdb)1540 esw_chains_create(struct mlx5_eswitch *esw, struct mlx5_flow_table *miss_fdb)
1541 {
1542 struct mlx5_core_dev *dev = esw->dev;
1543 struct mlx5_flow_table *nf_ft, *ft;
1544 struct mlx5_chains_attr attr = {};
1545 struct mlx5_fs_chains *chains;
1546 int err;
1547
1548 esw_init_chains_offload_flags(esw, &attr.flags);
1549 attr.ns = MLX5_FLOW_NAMESPACE_FDB;
1550 attr.max_grp_num = esw->params.large_group_num;
1551 attr.default_ft = miss_fdb;
1552 attr.mapping = esw->offloads.reg_c0_obj_pool;
1553
1554 chains = mlx5_chains_create(dev, &attr);
1555 if (IS_ERR(chains)) {
1556 err = PTR_ERR(chains);
1557 esw_warn(dev, "Failed to create fdb chains err(%d)\n", err);
1558 return err;
1559 }
1560 mlx5_chains_print_info(chains);
1561
1562 esw->fdb_table.offloads.esw_chains_priv = chains;
1563
1564 /* Create tc_end_ft which is the always created ft chain */
1565 nf_ft = mlx5_chains_get_table(chains, mlx5_chains_get_nf_ft_chain(chains),
1566 1, 0);
1567 if (IS_ERR(nf_ft)) {
1568 err = PTR_ERR(nf_ft);
1569 goto nf_ft_err;
1570 }
1571
1572 /* Always open the root for fast path */
1573 ft = mlx5_chains_get_table(chains, 0, 1, 0);
1574 if (IS_ERR(ft)) {
1575 err = PTR_ERR(ft);
1576 goto level_0_err;
1577 }
1578
1579 /* Open level 1 for split fdb rules now if prios isn't supported */
1580 if (!mlx5_chains_prios_supported(chains)) {
1581 err = esw_vport_tbl_get(esw);
1582 if (err)
1583 goto level_1_err;
1584 }
1585
1586 mlx5_chains_set_end_ft(chains, nf_ft);
1587
1588 return 0;
1589
1590 level_1_err:
1591 mlx5_chains_put_table(chains, 0, 1, 0);
1592 level_0_err:
1593 mlx5_chains_put_table(chains, mlx5_chains_get_nf_ft_chain(chains), 1, 0);
1594 nf_ft_err:
1595 mlx5_chains_destroy(chains);
1596 esw->fdb_table.offloads.esw_chains_priv = NULL;
1597
1598 return err;
1599 }
1600
1601 static void
esw_chains_destroy(struct mlx5_eswitch * esw,struct mlx5_fs_chains * chains)1602 esw_chains_destroy(struct mlx5_eswitch *esw, struct mlx5_fs_chains *chains)
1603 {
1604 if (!mlx5_chains_prios_supported(chains))
1605 esw_vport_tbl_put(esw);
1606 mlx5_chains_put_table(chains, 0, 1, 0);
1607 mlx5_chains_put_table(chains, mlx5_chains_get_nf_ft_chain(chains), 1, 0);
1608 mlx5_chains_destroy(chains);
1609 }
1610
1611 #else /* CONFIG_MLX5_CLS_ACT */
1612
1613 static int
esw_chains_create(struct mlx5_eswitch * esw,struct mlx5_flow_table * miss_fdb)1614 esw_chains_create(struct mlx5_eswitch *esw, struct mlx5_flow_table *miss_fdb)
1615 { return 0; }
1616
1617 static void
esw_chains_destroy(struct mlx5_eswitch * esw,struct mlx5_fs_chains * chains)1618 esw_chains_destroy(struct mlx5_eswitch *esw, struct mlx5_fs_chains *chains)
1619 {}
1620
1621 #endif
1622
1623 static int
esw_create_send_to_vport_group(struct mlx5_eswitch * esw,struct mlx5_flow_table * fdb,u32 * flow_group_in,int * ix)1624 esw_create_send_to_vport_group(struct mlx5_eswitch *esw,
1625 struct mlx5_flow_table *fdb,
1626 u32 *flow_group_in,
1627 int *ix)
1628 {
1629 int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
1630 struct mlx5_flow_group *g;
1631 void *match_criteria;
1632 int count, err = 0;
1633
1634 memset(flow_group_in, 0, inlen);
1635
1636 mlx5_esw_set_flow_group_source_port(esw, flow_group_in, MLX5_MATCH_MISC_PARAMETERS);
1637
1638 match_criteria = MLX5_ADDR_OF(create_flow_group_in, flow_group_in, match_criteria);
1639 MLX5_SET_TO_ONES(fte_match_param, match_criteria, misc_parameters.source_sqn);
1640
1641 if (!mlx5_eswitch_vport_match_metadata_enabled(esw) &&
1642 MLX5_CAP_ESW(esw->dev, merged_eswitch)) {
1643 MLX5_SET_TO_ONES(fte_match_param, match_criteria,
1644 misc_parameters.source_eswitch_owner_vhca_id);
1645 MLX5_SET(create_flow_group_in, flow_group_in,
1646 source_eswitch_owner_vhca_id_valid, 1);
1647 }
1648
1649 /* See comment at table_size calculation */
1650 count = MLX5_MAX_PORTS * (esw->total_vports * MAX_SQ_NVPORTS + MAX_PF_SQ);
1651 MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 0);
1652 MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, *ix + count - 1);
1653 *ix += count;
1654
1655 g = mlx5_create_flow_group(fdb, flow_group_in);
1656 if (IS_ERR(g)) {
1657 err = PTR_ERR(g);
1658 esw_warn(esw->dev, "Failed to create send-to-vport flow group err(%d)\n", err);
1659 goto out;
1660 }
1661 esw->fdb_table.offloads.send_to_vport_grp = g;
1662
1663 out:
1664 return err;
1665 }
1666
1667 static int
esw_create_meta_send_to_vport_group(struct mlx5_eswitch * esw,struct mlx5_flow_table * fdb,u32 * flow_group_in,int * ix)1668 esw_create_meta_send_to_vport_group(struct mlx5_eswitch *esw,
1669 struct mlx5_flow_table *fdb,
1670 u32 *flow_group_in,
1671 int *ix)
1672 {
1673 int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
1674 struct mlx5_flow_group *g;
1675 void *match_criteria;
1676 int err = 0;
1677
1678 if (!esw_src_port_rewrite_supported(esw))
1679 return 0;
1680
1681 memset(flow_group_in, 0, inlen);
1682
1683 MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable,
1684 MLX5_MATCH_MISC_PARAMETERS_2);
1685
1686 match_criteria = MLX5_ADDR_OF(create_flow_group_in, flow_group_in, match_criteria);
1687
1688 MLX5_SET(fte_match_param, match_criteria,
1689 misc_parameters_2.metadata_reg_c_0,
1690 mlx5_eswitch_get_vport_metadata_mask());
1691 MLX5_SET(fte_match_param, match_criteria,
1692 misc_parameters_2.metadata_reg_c_1, ESW_TUN_MASK);
1693
1694 MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, *ix);
1695 MLX5_SET(create_flow_group_in, flow_group_in,
1696 end_flow_index, *ix + esw->total_vports - 1);
1697 *ix += esw->total_vports;
1698
1699 g = mlx5_create_flow_group(fdb, flow_group_in);
1700 if (IS_ERR(g)) {
1701 err = PTR_ERR(g);
1702 esw_warn(esw->dev,
1703 "Failed to create send-to-vport meta flow group err(%d)\n", err);
1704 goto send_vport_meta_err;
1705 }
1706 esw->fdb_table.offloads.send_to_vport_meta_grp = g;
1707
1708 return 0;
1709
1710 send_vport_meta_err:
1711 return err;
1712 }
1713
1714 static int
esw_create_peer_esw_miss_group(struct mlx5_eswitch * esw,struct mlx5_flow_table * fdb,u32 * flow_group_in,int * ix)1715 esw_create_peer_esw_miss_group(struct mlx5_eswitch *esw,
1716 struct mlx5_flow_table *fdb,
1717 u32 *flow_group_in,
1718 int *ix)
1719 {
1720 int max_peer_ports = (esw->total_vports - 1) * (MLX5_MAX_PORTS - 1);
1721 int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
1722 struct mlx5_flow_group *g;
1723 void *match_criteria;
1724 int err = 0;
1725
1726 if (!MLX5_CAP_ESW(esw->dev, merged_eswitch))
1727 return 0;
1728
1729 memset(flow_group_in, 0, inlen);
1730
1731 mlx5_esw_set_flow_group_source_port(esw, flow_group_in, 0);
1732
1733 if (!mlx5_eswitch_vport_match_metadata_enabled(esw)) {
1734 match_criteria = MLX5_ADDR_OF(create_flow_group_in,
1735 flow_group_in,
1736 match_criteria);
1737
1738 MLX5_SET_TO_ONES(fte_match_param, match_criteria,
1739 misc_parameters.source_eswitch_owner_vhca_id);
1740
1741 MLX5_SET(create_flow_group_in, flow_group_in,
1742 source_eswitch_owner_vhca_id_valid, 1);
1743 }
1744
1745 MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, *ix);
1746 MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index,
1747 *ix + max_peer_ports);
1748 *ix += max_peer_ports + 1;
1749
1750 g = mlx5_create_flow_group(fdb, flow_group_in);
1751 if (IS_ERR(g)) {
1752 err = PTR_ERR(g);
1753 esw_warn(esw->dev, "Failed to create peer miss flow group err(%d)\n", err);
1754 goto out;
1755 }
1756 esw->fdb_table.offloads.peer_miss_grp = g;
1757
1758 out:
1759 return err;
1760 }
1761
1762 static int
esw_create_miss_group(struct mlx5_eswitch * esw,struct mlx5_flow_table * fdb,u32 * flow_group_in,int * ix)1763 esw_create_miss_group(struct mlx5_eswitch *esw,
1764 struct mlx5_flow_table *fdb,
1765 u32 *flow_group_in,
1766 int *ix)
1767 {
1768 int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
1769 struct mlx5_flow_group *g;
1770 void *match_criteria;
1771 int err = 0;
1772 u8 *dmac;
1773
1774 memset(flow_group_in, 0, inlen);
1775
1776 MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable,
1777 MLX5_MATCH_OUTER_HEADERS);
1778 match_criteria = MLX5_ADDR_OF(create_flow_group_in, flow_group_in,
1779 match_criteria);
1780 dmac = MLX5_ADDR_OF(fte_match_param, match_criteria,
1781 outer_headers.dmac_47_16);
1782 dmac[0] = 0x01;
1783
1784 MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, *ix);
1785 MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index,
1786 *ix + MLX5_ESW_MISS_FLOWS);
1787
1788 g = mlx5_create_flow_group(fdb, flow_group_in);
1789 if (IS_ERR(g)) {
1790 err = PTR_ERR(g);
1791 esw_warn(esw->dev, "Failed to create miss flow group err(%d)\n", err);
1792 goto miss_err;
1793 }
1794 esw->fdb_table.offloads.miss_grp = g;
1795
1796 err = esw_add_fdb_miss_rule(esw);
1797 if (err)
1798 goto miss_rule_err;
1799
1800 return 0;
1801
1802 miss_rule_err:
1803 mlx5_destroy_flow_group(esw->fdb_table.offloads.miss_grp);
1804 miss_err:
1805 return err;
1806 }
1807
esw_create_offloads_fdb_tables(struct mlx5_eswitch * esw)1808 static int esw_create_offloads_fdb_tables(struct mlx5_eswitch *esw)
1809 {
1810 int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
1811 struct mlx5_flow_table_attr ft_attr = {};
1812 struct mlx5_core_dev *dev = esw->dev;
1813 struct mlx5_flow_namespace *root_ns;
1814 struct mlx5_flow_table *fdb = NULL;
1815 int table_size, ix = 0, err = 0;
1816 u32 flags = 0, *flow_group_in;
1817
1818 esw_debug(esw->dev, "Create offloads FDB Tables\n");
1819
1820 flow_group_in = kvzalloc(inlen, GFP_KERNEL);
1821 if (!flow_group_in)
1822 return -ENOMEM;
1823
1824 root_ns = mlx5_get_flow_namespace(dev, MLX5_FLOW_NAMESPACE_FDB);
1825 if (!root_ns) {
1826 esw_warn(dev, "Failed to get FDB flow namespace\n");
1827 err = -EOPNOTSUPP;
1828 goto ns_err;
1829 }
1830 esw->fdb_table.offloads.ns = root_ns;
1831 err = mlx5_flow_namespace_set_mode(root_ns,
1832 esw->dev->priv.steering->mode);
1833 if (err) {
1834 esw_warn(dev, "Failed to set FDB namespace steering mode\n");
1835 goto ns_err;
1836 }
1837
1838 /* To be strictly correct:
1839 * MLX5_MAX_PORTS * (esw->total_vports * MAX_SQ_NVPORTS + MAX_PF_SQ)
1840 * should be:
1841 * esw->total_vports * MAX_SQ_NVPORTS + MAX_PF_SQ +
1842 * peer_esw->total_vports * MAX_SQ_NVPORTS + MAX_PF_SQ
1843 * but as the peer device might not be in switchdev mode it's not
1844 * possible. We use the fact that by default FW sets max vfs and max sfs
1845 * to the same value on both devices. If it needs to be changed in the future note
1846 * the peer miss group should also be created based on the number of
1847 * total vports of the peer (currently is also uses esw->total_vports).
1848 */
1849 table_size = MLX5_MAX_PORTS * (esw->total_vports * MAX_SQ_NVPORTS + MAX_PF_SQ) +
1850 esw->total_vports * MLX5_MAX_PORTS + MLX5_ESW_MISS_FLOWS;
1851
1852 /* create the slow path fdb with encap set, so further table instances
1853 * can be created at run time while VFs are probed if the FW allows that.
1854 */
1855 if (esw->offloads.encap != DEVLINK_ESWITCH_ENCAP_MODE_NONE)
1856 flags |= (MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT |
1857 MLX5_FLOW_TABLE_TUNNEL_EN_DECAP);
1858
1859 ft_attr.flags = flags;
1860 ft_attr.max_fte = table_size;
1861 ft_attr.prio = FDB_SLOW_PATH;
1862
1863 fdb = mlx5_create_flow_table(root_ns, &ft_attr);
1864 if (IS_ERR(fdb)) {
1865 err = PTR_ERR(fdb);
1866 esw_warn(dev, "Failed to create slow path FDB Table err %d\n", err);
1867 goto slow_fdb_err;
1868 }
1869 esw->fdb_table.offloads.slow_fdb = fdb;
1870
1871 /* Create empty TC-miss managed table. This allows plugging in following
1872 * priorities without directly exposing their level 0 table to
1873 * eswitch_offloads and passing it as miss_fdb to following call to
1874 * esw_chains_create().
1875 */
1876 memset(&ft_attr, 0, sizeof(ft_attr));
1877 ft_attr.prio = FDB_TC_MISS;
1878 esw->fdb_table.offloads.tc_miss_table = mlx5_create_flow_table(root_ns, &ft_attr);
1879 if (IS_ERR(esw->fdb_table.offloads.tc_miss_table)) {
1880 err = PTR_ERR(esw->fdb_table.offloads.tc_miss_table);
1881 esw_warn(dev, "Failed to create TC miss FDB Table err %d\n", err);
1882 goto tc_miss_table_err;
1883 }
1884
1885 err = esw_chains_create(esw, esw->fdb_table.offloads.tc_miss_table);
1886 if (err) {
1887 esw_warn(dev, "Failed to open fdb chains err(%d)\n", err);
1888 goto fdb_chains_err;
1889 }
1890
1891 err = esw_create_send_to_vport_group(esw, fdb, flow_group_in, &ix);
1892 if (err)
1893 goto send_vport_err;
1894
1895 err = esw_create_meta_send_to_vport_group(esw, fdb, flow_group_in, &ix);
1896 if (err)
1897 goto send_vport_meta_err;
1898
1899 err = esw_create_peer_esw_miss_group(esw, fdb, flow_group_in, &ix);
1900 if (err)
1901 goto peer_miss_err;
1902
1903 err = esw_create_miss_group(esw, fdb, flow_group_in, &ix);
1904 if (err)
1905 goto miss_err;
1906
1907 kvfree(flow_group_in);
1908 return 0;
1909
1910 miss_err:
1911 if (MLX5_CAP_ESW(esw->dev, merged_eswitch))
1912 mlx5_destroy_flow_group(esw->fdb_table.offloads.peer_miss_grp);
1913 peer_miss_err:
1914 if (esw->fdb_table.offloads.send_to_vport_meta_grp)
1915 mlx5_destroy_flow_group(esw->fdb_table.offloads.send_to_vport_meta_grp);
1916 send_vport_meta_err:
1917 mlx5_destroy_flow_group(esw->fdb_table.offloads.send_to_vport_grp);
1918 send_vport_err:
1919 esw_chains_destroy(esw, esw_chains(esw));
1920 fdb_chains_err:
1921 mlx5_destroy_flow_table(esw->fdb_table.offloads.tc_miss_table);
1922 tc_miss_table_err:
1923 mlx5_destroy_flow_table(mlx5_eswitch_get_slow_fdb(esw));
1924 slow_fdb_err:
1925 /* Holds true only as long as DMFS is the default */
1926 mlx5_flow_namespace_set_mode(root_ns, MLX5_FLOW_STEERING_MODE_DMFS);
1927 ns_err:
1928 kvfree(flow_group_in);
1929 return err;
1930 }
1931
esw_destroy_offloads_fdb_tables(struct mlx5_eswitch * esw)1932 static void esw_destroy_offloads_fdb_tables(struct mlx5_eswitch *esw)
1933 {
1934 if (!mlx5_eswitch_get_slow_fdb(esw))
1935 return;
1936
1937 esw_debug(esw->dev, "Destroy offloads FDB Tables\n");
1938 mlx5_del_flow_rules(esw->fdb_table.offloads.miss_rule_multi);
1939 mlx5_del_flow_rules(esw->fdb_table.offloads.miss_rule_uni);
1940 mlx5_destroy_flow_group(esw->fdb_table.offloads.send_to_vport_grp);
1941 if (esw->fdb_table.offloads.send_to_vport_meta_grp)
1942 mlx5_destroy_flow_group(esw->fdb_table.offloads.send_to_vport_meta_grp);
1943 if (MLX5_CAP_ESW(esw->dev, merged_eswitch))
1944 mlx5_destroy_flow_group(esw->fdb_table.offloads.peer_miss_grp);
1945 mlx5_destroy_flow_group(esw->fdb_table.offloads.miss_grp);
1946
1947 esw_chains_destroy(esw, esw_chains(esw));
1948
1949 mlx5_destroy_flow_table(esw->fdb_table.offloads.tc_miss_table);
1950 mlx5_destroy_flow_table(mlx5_eswitch_get_slow_fdb(esw));
1951 /* Holds true only as long as DMFS is the default */
1952 mlx5_flow_namespace_set_mode(esw->fdb_table.offloads.ns,
1953 MLX5_FLOW_STEERING_MODE_DMFS);
1954 atomic64_set(&esw->user_count, 0);
1955 }
1956
esw_get_nr_ft_offloads_steering_src_ports(struct mlx5_eswitch * esw)1957 static int esw_get_nr_ft_offloads_steering_src_ports(struct mlx5_eswitch *esw)
1958 {
1959 int nvports;
1960
1961 nvports = esw->total_vports + MLX5_ESW_MISS_FLOWS;
1962 if (mlx5e_tc_int_port_supported(esw))
1963 nvports += MLX5E_TC_MAX_INT_PORT_NUM;
1964
1965 return nvports;
1966 }
1967
esw_create_offloads_table(struct mlx5_eswitch * esw)1968 static int esw_create_offloads_table(struct mlx5_eswitch *esw)
1969 {
1970 struct mlx5_flow_table_attr ft_attr = {};
1971 struct mlx5_core_dev *dev = esw->dev;
1972 struct mlx5_flow_table *ft_offloads;
1973 struct mlx5_flow_namespace *ns;
1974 int err = 0;
1975
1976 ns = mlx5_get_flow_namespace(dev, MLX5_FLOW_NAMESPACE_OFFLOADS);
1977 if (!ns) {
1978 esw_warn(esw->dev, "Failed to get offloads flow namespace\n");
1979 return -EOPNOTSUPP;
1980 }
1981
1982 ft_attr.max_fte = esw_get_nr_ft_offloads_steering_src_ports(esw) +
1983 MLX5_ESW_FT_OFFLOADS_DROP_RULE;
1984 ft_attr.prio = 1;
1985
1986 ft_offloads = mlx5_create_flow_table(ns, &ft_attr);
1987 if (IS_ERR(ft_offloads)) {
1988 err = PTR_ERR(ft_offloads);
1989 esw_warn(esw->dev, "Failed to create offloads table, err %d\n", err);
1990 return err;
1991 }
1992
1993 esw->offloads.ft_offloads = ft_offloads;
1994 return 0;
1995 }
1996
esw_destroy_offloads_table(struct mlx5_eswitch * esw)1997 static void esw_destroy_offloads_table(struct mlx5_eswitch *esw)
1998 {
1999 struct mlx5_esw_offload *offloads = &esw->offloads;
2000
2001 mlx5_destroy_flow_table(offloads->ft_offloads);
2002 }
2003
esw_create_vport_rx_group(struct mlx5_eswitch * esw)2004 static int esw_create_vport_rx_group(struct mlx5_eswitch *esw)
2005 {
2006 int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
2007 struct mlx5_flow_group *g;
2008 u32 *flow_group_in;
2009 int nvports;
2010 int err = 0;
2011
2012 nvports = esw_get_nr_ft_offloads_steering_src_ports(esw);
2013 flow_group_in = kvzalloc(inlen, GFP_KERNEL);
2014 if (!flow_group_in)
2015 return -ENOMEM;
2016
2017 mlx5_esw_set_flow_group_source_port(esw, flow_group_in, 0);
2018
2019 MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 0);
2020 MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, nvports - 1);
2021
2022 g = mlx5_create_flow_group(esw->offloads.ft_offloads, flow_group_in);
2023
2024 if (IS_ERR(g)) {
2025 err = PTR_ERR(g);
2026 mlx5_core_warn(esw->dev, "Failed to create vport rx group err %d\n", err);
2027 goto out;
2028 }
2029
2030 esw->offloads.vport_rx_group = g;
2031 out:
2032 kvfree(flow_group_in);
2033 return err;
2034 }
2035
esw_destroy_vport_rx_group(struct mlx5_eswitch * esw)2036 static void esw_destroy_vport_rx_group(struct mlx5_eswitch *esw)
2037 {
2038 mlx5_destroy_flow_group(esw->offloads.vport_rx_group);
2039 }
2040
esw_create_vport_rx_drop_rule_index(struct mlx5_eswitch * esw)2041 static int esw_create_vport_rx_drop_rule_index(struct mlx5_eswitch *esw)
2042 {
2043 /* ft_offloads table is enlarged by MLX5_ESW_FT_OFFLOADS_DROP_RULE (1)
2044 * for the drop rule, which is placed at the end of the table.
2045 * So return the total of vport and int_port as rule index.
2046 */
2047 return esw_get_nr_ft_offloads_steering_src_ports(esw);
2048 }
2049
esw_create_vport_rx_drop_group(struct mlx5_eswitch * esw)2050 static int esw_create_vport_rx_drop_group(struct mlx5_eswitch *esw)
2051 {
2052 int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
2053 struct mlx5_flow_group *g;
2054 u32 *flow_group_in;
2055 int flow_index;
2056 int err = 0;
2057
2058 flow_index = esw_create_vport_rx_drop_rule_index(esw);
2059
2060 flow_group_in = kvzalloc(inlen, GFP_KERNEL);
2061 if (!flow_group_in)
2062 return -ENOMEM;
2063
2064 MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, flow_index);
2065 MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, flow_index);
2066
2067 g = mlx5_create_flow_group(esw->offloads.ft_offloads, flow_group_in);
2068
2069 if (IS_ERR(g)) {
2070 err = PTR_ERR(g);
2071 mlx5_core_warn(esw->dev, "Failed to create vport rx drop group err %d\n", err);
2072 goto out;
2073 }
2074
2075 esw->offloads.vport_rx_drop_group = g;
2076 out:
2077 kvfree(flow_group_in);
2078 return err;
2079 }
2080
esw_destroy_vport_rx_drop_group(struct mlx5_eswitch * esw)2081 static void esw_destroy_vport_rx_drop_group(struct mlx5_eswitch *esw)
2082 {
2083 if (esw->offloads.vport_rx_drop_group)
2084 mlx5_destroy_flow_group(esw->offloads.vport_rx_drop_group);
2085 }
2086
2087 void
mlx5_esw_set_spec_source_port(struct mlx5_eswitch * esw,u16 vport,struct mlx5_flow_spec * spec)2088 mlx5_esw_set_spec_source_port(struct mlx5_eswitch *esw,
2089 u16 vport,
2090 struct mlx5_flow_spec *spec)
2091 {
2092 void *misc;
2093
2094 if (mlx5_eswitch_vport_match_metadata_enabled(esw)) {
2095 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters_2);
2096 MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
2097 mlx5_eswitch_get_vport_metadata_for_match(esw, vport));
2098
2099 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters_2);
2100 MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
2101 mlx5_eswitch_get_vport_metadata_mask());
2102
2103 spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS_2;
2104 } else {
2105 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters);
2106 MLX5_SET(fte_match_set_misc, misc, source_port, vport);
2107
2108 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters);
2109 MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
2110
2111 spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS;
2112 }
2113 }
2114
2115 struct mlx5_flow_handle *
mlx5_eswitch_create_vport_rx_rule(struct mlx5_eswitch * esw,u16 vport,struct mlx5_flow_destination * dest)2116 mlx5_eswitch_create_vport_rx_rule(struct mlx5_eswitch *esw, u16 vport,
2117 struct mlx5_flow_destination *dest)
2118 {
2119 struct mlx5_flow_act flow_act = {0};
2120 struct mlx5_flow_handle *flow_rule;
2121 struct mlx5_flow_spec *spec;
2122
2123 spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
2124 if (!spec) {
2125 flow_rule = ERR_PTR(-ENOMEM);
2126 goto out;
2127 }
2128
2129 mlx5_esw_set_spec_source_port(esw, vport, spec);
2130
2131 flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
2132 flow_rule = mlx5_add_flow_rules(esw->offloads.ft_offloads, spec,
2133 &flow_act, dest, 1);
2134 if (IS_ERR(flow_rule)) {
2135 esw_warn(esw->dev, "fs offloads: Failed to add vport rx rule err %ld\n", PTR_ERR(flow_rule));
2136 goto out;
2137 }
2138
2139 out:
2140 kvfree(spec);
2141 return flow_rule;
2142 }
2143
esw_create_vport_rx_drop_rule(struct mlx5_eswitch * esw)2144 static int esw_create_vport_rx_drop_rule(struct mlx5_eswitch *esw)
2145 {
2146 struct mlx5_flow_act flow_act = {};
2147 struct mlx5_flow_handle *flow_rule;
2148
2149 flow_act.action = MLX5_FLOW_CONTEXT_ACTION_DROP;
2150 flow_rule = mlx5_add_flow_rules(esw->offloads.ft_offloads, NULL,
2151 &flow_act, NULL, 0);
2152 if (IS_ERR(flow_rule)) {
2153 esw_warn(esw->dev,
2154 "fs offloads: Failed to add vport rx drop rule err %ld\n",
2155 PTR_ERR(flow_rule));
2156 return PTR_ERR(flow_rule);
2157 }
2158
2159 esw->offloads.vport_rx_drop_rule = flow_rule;
2160
2161 return 0;
2162 }
2163
esw_destroy_vport_rx_drop_rule(struct mlx5_eswitch * esw)2164 static void esw_destroy_vport_rx_drop_rule(struct mlx5_eswitch *esw)
2165 {
2166 if (esw->offloads.vport_rx_drop_rule)
2167 mlx5_del_flow_rules(esw->offloads.vport_rx_drop_rule);
2168 }
2169
mlx5_eswitch_inline_mode_get(struct mlx5_eswitch * esw,u8 * mode)2170 static int mlx5_eswitch_inline_mode_get(struct mlx5_eswitch *esw, u8 *mode)
2171 {
2172 u8 prev_mlx5_mode, mlx5_mode = MLX5_INLINE_MODE_L2;
2173 struct mlx5_core_dev *dev = esw->dev;
2174 struct mlx5_vport *vport;
2175 unsigned long i;
2176
2177 if (!MLX5_CAP_GEN(dev, vport_group_manager))
2178 return -EOPNOTSUPP;
2179
2180 if (!mlx5_esw_is_fdb_created(esw))
2181 return -EOPNOTSUPP;
2182
2183 switch (MLX5_CAP_ETH(dev, wqe_inline_mode)) {
2184 case MLX5_CAP_INLINE_MODE_NOT_REQUIRED:
2185 mlx5_mode = MLX5_INLINE_MODE_NONE;
2186 goto out;
2187 case MLX5_CAP_INLINE_MODE_L2:
2188 mlx5_mode = MLX5_INLINE_MODE_L2;
2189 goto out;
2190 case MLX5_CAP_INLINE_MODE_VPORT_CONTEXT:
2191 goto query_vports;
2192 }
2193
2194 query_vports:
2195 mlx5_query_nic_vport_min_inline(dev, esw->first_host_vport, &prev_mlx5_mode);
2196 mlx5_esw_for_each_host_func_vport(esw, i, vport, esw->esw_funcs.num_vfs) {
2197 mlx5_query_nic_vport_min_inline(dev, vport->vport, &mlx5_mode);
2198 if (prev_mlx5_mode != mlx5_mode)
2199 return -EINVAL;
2200 prev_mlx5_mode = mlx5_mode;
2201 }
2202
2203 out:
2204 *mode = mlx5_mode;
2205 return 0;
2206 }
2207
esw_destroy_restore_table(struct mlx5_eswitch * esw)2208 static void esw_destroy_restore_table(struct mlx5_eswitch *esw)
2209 {
2210 struct mlx5_esw_offload *offloads = &esw->offloads;
2211
2212 if (!mlx5_eswitch_reg_c1_loopback_supported(esw))
2213 return;
2214
2215 mlx5_modify_header_dealloc(esw->dev, offloads->restore_copy_hdr_id);
2216 mlx5_destroy_flow_group(offloads->restore_group);
2217 mlx5_destroy_flow_table(offloads->ft_offloads_restore);
2218 }
2219
esw_create_restore_table(struct mlx5_eswitch * esw)2220 static int esw_create_restore_table(struct mlx5_eswitch *esw)
2221 {
2222 u8 modact[MLX5_UN_SZ_BYTES(set_add_copy_action_in_auto)] = {};
2223 int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
2224 struct mlx5_flow_table_attr ft_attr = {};
2225 struct mlx5_core_dev *dev = esw->dev;
2226 struct mlx5_flow_namespace *ns;
2227 struct mlx5_modify_hdr *mod_hdr;
2228 void *match_criteria, *misc;
2229 struct mlx5_flow_table *ft;
2230 struct mlx5_flow_group *g;
2231 u32 *flow_group_in;
2232 int err = 0;
2233
2234 if (!mlx5_eswitch_reg_c1_loopback_supported(esw))
2235 return 0;
2236
2237 ns = mlx5_get_flow_namespace(dev, MLX5_FLOW_NAMESPACE_OFFLOADS);
2238 if (!ns) {
2239 esw_warn(esw->dev, "Failed to get offloads flow namespace\n");
2240 return -EOPNOTSUPP;
2241 }
2242
2243 flow_group_in = kvzalloc(inlen, GFP_KERNEL);
2244 if (!flow_group_in) {
2245 err = -ENOMEM;
2246 goto out_free;
2247 }
2248
2249 ft_attr.max_fte = 1 << ESW_REG_C0_USER_DATA_METADATA_BITS;
2250 ft = mlx5_create_flow_table(ns, &ft_attr);
2251 if (IS_ERR(ft)) {
2252 err = PTR_ERR(ft);
2253 esw_warn(esw->dev, "Failed to create restore table, err %d\n",
2254 err);
2255 goto out_free;
2256 }
2257
2258 match_criteria = MLX5_ADDR_OF(create_flow_group_in, flow_group_in,
2259 match_criteria);
2260 misc = MLX5_ADDR_OF(fte_match_param, match_criteria,
2261 misc_parameters_2);
2262
2263 MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
2264 ESW_REG_C0_USER_DATA_METADATA_MASK);
2265 MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 0);
2266 MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index,
2267 ft_attr.max_fte - 1);
2268 MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable,
2269 MLX5_MATCH_MISC_PARAMETERS_2);
2270 g = mlx5_create_flow_group(ft, flow_group_in);
2271 if (IS_ERR(g)) {
2272 err = PTR_ERR(g);
2273 esw_warn(dev, "Failed to create restore flow group, err: %d\n",
2274 err);
2275 goto err_group;
2276 }
2277
2278 MLX5_SET(copy_action_in, modact, action_type, MLX5_ACTION_TYPE_COPY);
2279 MLX5_SET(copy_action_in, modact, src_field,
2280 MLX5_ACTION_IN_FIELD_METADATA_REG_C_1);
2281 MLX5_SET(copy_action_in, modact, dst_field,
2282 MLX5_ACTION_IN_FIELD_METADATA_REG_B);
2283 mod_hdr = mlx5_modify_header_alloc(esw->dev,
2284 MLX5_FLOW_NAMESPACE_KERNEL, 1,
2285 modact);
2286 if (IS_ERR(mod_hdr)) {
2287 err = PTR_ERR(mod_hdr);
2288 esw_warn(dev, "Failed to create restore mod header, err: %d\n",
2289 err);
2290 goto err_mod_hdr;
2291 }
2292
2293 esw->offloads.ft_offloads_restore = ft;
2294 esw->offloads.restore_group = g;
2295 esw->offloads.restore_copy_hdr_id = mod_hdr;
2296
2297 kvfree(flow_group_in);
2298
2299 return 0;
2300
2301 err_mod_hdr:
2302 mlx5_destroy_flow_group(g);
2303 err_group:
2304 mlx5_destroy_flow_table(ft);
2305 out_free:
2306 kvfree(flow_group_in);
2307
2308 return err;
2309 }
2310
esw_offloads_start(struct mlx5_eswitch * esw,struct netlink_ext_ack * extack)2311 static int esw_offloads_start(struct mlx5_eswitch *esw,
2312 struct netlink_ext_ack *extack)
2313 {
2314 int err;
2315
2316 esw->mode = MLX5_ESWITCH_OFFLOADS;
2317 err = mlx5_eswitch_enable_locked(esw, esw->dev->priv.sriov.num_vfs);
2318 if (err) {
2319 NL_SET_ERR_MSG_MOD(extack,
2320 "Failed setting eswitch to offloads");
2321 esw->mode = MLX5_ESWITCH_LEGACY;
2322 mlx5_rescan_drivers(esw->dev);
2323 return err;
2324 }
2325 if (esw->offloads.inline_mode == MLX5_INLINE_MODE_NONE) {
2326 if (mlx5_eswitch_inline_mode_get(esw,
2327 &esw->offloads.inline_mode)) {
2328 esw->offloads.inline_mode = MLX5_INLINE_MODE_L2;
2329 NL_SET_ERR_MSG_MOD(extack,
2330 "Inline mode is different between vports");
2331 }
2332 }
2333 return 0;
2334 }
2335
mlx5_esw_offloads_rep_init(struct mlx5_eswitch * esw,const struct mlx5_vport * vport)2336 static int mlx5_esw_offloads_rep_init(struct mlx5_eswitch *esw, const struct mlx5_vport *vport)
2337 {
2338 struct mlx5_eswitch_rep *rep;
2339 int rep_type;
2340 int err;
2341
2342 rep = kzalloc(sizeof(*rep), GFP_KERNEL);
2343 if (!rep)
2344 return -ENOMEM;
2345
2346 rep->vport = vport->vport;
2347 rep->vport_index = vport->index;
2348 for (rep_type = 0; rep_type < NUM_REP_TYPES; rep_type++)
2349 atomic_set(&rep->rep_data[rep_type].state, REP_UNREGISTERED);
2350
2351 err = xa_insert(&esw->offloads.vport_reps, rep->vport, rep, GFP_KERNEL);
2352 if (err)
2353 goto insert_err;
2354
2355 return 0;
2356
2357 insert_err:
2358 kfree(rep);
2359 return err;
2360 }
2361
mlx5_esw_offloads_rep_cleanup(struct mlx5_eswitch * esw,struct mlx5_eswitch_rep * rep)2362 static void mlx5_esw_offloads_rep_cleanup(struct mlx5_eswitch *esw,
2363 struct mlx5_eswitch_rep *rep)
2364 {
2365 xa_erase(&esw->offloads.vport_reps, rep->vport);
2366 kfree(rep);
2367 }
2368
esw_offloads_cleanup_reps(struct mlx5_eswitch * esw)2369 static void esw_offloads_cleanup_reps(struct mlx5_eswitch *esw)
2370 {
2371 struct mlx5_eswitch_rep *rep;
2372 unsigned long i;
2373
2374 mlx5_esw_for_each_rep(esw, i, rep)
2375 mlx5_esw_offloads_rep_cleanup(esw, rep);
2376 xa_destroy(&esw->offloads.vport_reps);
2377 }
2378
esw_offloads_init_reps(struct mlx5_eswitch * esw)2379 static int esw_offloads_init_reps(struct mlx5_eswitch *esw)
2380 {
2381 struct mlx5_vport *vport;
2382 unsigned long i;
2383 int err;
2384
2385 xa_init(&esw->offloads.vport_reps);
2386
2387 mlx5_esw_for_each_vport(esw, i, vport) {
2388 err = mlx5_esw_offloads_rep_init(esw, vport);
2389 if (err)
2390 goto err;
2391 }
2392 return 0;
2393
2394 err:
2395 esw_offloads_cleanup_reps(esw);
2396 return err;
2397 }
2398
esw_port_metadata_set(struct devlink * devlink,u32 id,struct devlink_param_gset_ctx * ctx)2399 static int esw_port_metadata_set(struct devlink *devlink, u32 id,
2400 struct devlink_param_gset_ctx *ctx)
2401 {
2402 struct mlx5_core_dev *dev = devlink_priv(devlink);
2403 struct mlx5_eswitch *esw = dev->priv.eswitch;
2404 int err = 0;
2405
2406 down_write(&esw->mode_lock);
2407 if (mlx5_esw_is_fdb_created(esw)) {
2408 err = -EBUSY;
2409 goto done;
2410 }
2411 if (!mlx5_esw_vport_match_metadata_supported(esw)) {
2412 err = -EOPNOTSUPP;
2413 goto done;
2414 }
2415 if (ctx->val.vbool)
2416 esw->flags |= MLX5_ESWITCH_VPORT_MATCH_METADATA;
2417 else
2418 esw->flags &= ~MLX5_ESWITCH_VPORT_MATCH_METADATA;
2419 done:
2420 up_write(&esw->mode_lock);
2421 return err;
2422 }
2423
esw_port_metadata_get(struct devlink * devlink,u32 id,struct devlink_param_gset_ctx * ctx)2424 static int esw_port_metadata_get(struct devlink *devlink, u32 id,
2425 struct devlink_param_gset_ctx *ctx)
2426 {
2427 struct mlx5_core_dev *dev = devlink_priv(devlink);
2428
2429 ctx->val.vbool = mlx5_eswitch_vport_match_metadata_enabled(dev->priv.eswitch);
2430 return 0;
2431 }
2432
esw_port_metadata_validate(struct devlink * devlink,u32 id,union devlink_param_value val,struct netlink_ext_ack * extack)2433 static int esw_port_metadata_validate(struct devlink *devlink, u32 id,
2434 union devlink_param_value val,
2435 struct netlink_ext_ack *extack)
2436 {
2437 struct mlx5_core_dev *dev = devlink_priv(devlink);
2438 u8 esw_mode;
2439
2440 esw_mode = mlx5_eswitch_mode(dev);
2441 if (esw_mode == MLX5_ESWITCH_OFFLOADS) {
2442 NL_SET_ERR_MSG_MOD(extack,
2443 "E-Switch must either disabled or non switchdev mode");
2444 return -EBUSY;
2445 }
2446 return 0;
2447 }
2448
2449 static const struct devlink_param esw_devlink_params[] = {
2450 DEVLINK_PARAM_DRIVER(MLX5_DEVLINK_PARAM_ID_ESW_PORT_METADATA,
2451 "esw_port_metadata", DEVLINK_PARAM_TYPE_BOOL,
2452 BIT(DEVLINK_PARAM_CMODE_RUNTIME),
2453 esw_port_metadata_get,
2454 esw_port_metadata_set,
2455 esw_port_metadata_validate),
2456 };
2457
esw_offloads_init(struct mlx5_eswitch * esw)2458 int esw_offloads_init(struct mlx5_eswitch *esw)
2459 {
2460 int err;
2461
2462 err = esw_offloads_init_reps(esw);
2463 if (err)
2464 return err;
2465
2466 err = devl_params_register(priv_to_devlink(esw->dev),
2467 esw_devlink_params,
2468 ARRAY_SIZE(esw_devlink_params));
2469 if (err)
2470 goto err_params;
2471
2472 return 0;
2473
2474 err_params:
2475 esw_offloads_cleanup_reps(esw);
2476 return err;
2477 }
2478
esw_offloads_cleanup(struct mlx5_eswitch * esw)2479 void esw_offloads_cleanup(struct mlx5_eswitch *esw)
2480 {
2481 devl_params_unregister(priv_to_devlink(esw->dev),
2482 esw_devlink_params,
2483 ARRAY_SIZE(esw_devlink_params));
2484 esw_offloads_cleanup_reps(esw);
2485 }
2486
__esw_offloads_unload_rep(struct mlx5_eswitch * esw,struct mlx5_eswitch_rep * rep,u8 rep_type)2487 static void __esw_offloads_unload_rep(struct mlx5_eswitch *esw,
2488 struct mlx5_eswitch_rep *rep, u8 rep_type)
2489 {
2490 if (atomic_cmpxchg(&rep->rep_data[rep_type].state,
2491 REP_LOADED, REP_REGISTERED) == REP_LOADED)
2492 esw->offloads.rep_ops[rep_type]->unload(rep);
2493 }
2494
__unload_reps_all_vport(struct mlx5_eswitch * esw,u8 rep_type)2495 static void __unload_reps_all_vport(struct mlx5_eswitch *esw, u8 rep_type)
2496 {
2497 struct mlx5_eswitch_rep *rep;
2498 unsigned long i;
2499
2500 mlx5_esw_for_each_rep(esw, i, rep)
2501 __esw_offloads_unload_rep(esw, rep, rep_type);
2502 }
2503
mlx5_esw_offloads_rep_load(struct mlx5_eswitch * esw,u16 vport_num)2504 static int mlx5_esw_offloads_rep_load(struct mlx5_eswitch *esw, u16 vport_num)
2505 {
2506 struct mlx5_eswitch_rep *rep;
2507 int rep_type;
2508 int err;
2509
2510 rep = mlx5_eswitch_get_rep(esw, vport_num);
2511 for (rep_type = 0; rep_type < NUM_REP_TYPES; rep_type++)
2512 if (atomic_cmpxchg(&rep->rep_data[rep_type].state,
2513 REP_REGISTERED, REP_LOADED) == REP_REGISTERED) {
2514 err = esw->offloads.rep_ops[rep_type]->load(esw->dev, rep);
2515 if (err)
2516 goto err_reps;
2517 }
2518
2519 return 0;
2520
2521 err_reps:
2522 atomic_set(&rep->rep_data[rep_type].state, REP_REGISTERED);
2523 for (--rep_type; rep_type >= 0; rep_type--)
2524 __esw_offloads_unload_rep(esw, rep, rep_type);
2525 return err;
2526 }
2527
mlx5_esw_offloads_rep_unload(struct mlx5_eswitch * esw,u16 vport_num)2528 static void mlx5_esw_offloads_rep_unload(struct mlx5_eswitch *esw, u16 vport_num)
2529 {
2530 struct mlx5_eswitch_rep *rep;
2531 int rep_type;
2532
2533 rep = mlx5_eswitch_get_rep(esw, vport_num);
2534 for (rep_type = NUM_REP_TYPES - 1; rep_type >= 0; rep_type--)
2535 __esw_offloads_unload_rep(esw, rep, rep_type);
2536 }
2537
mlx5_esw_offloads_init_pf_vf_rep(struct mlx5_eswitch * esw,struct mlx5_vport * vport)2538 int mlx5_esw_offloads_init_pf_vf_rep(struct mlx5_eswitch *esw, struct mlx5_vport *vport)
2539 {
2540 if (esw->mode != MLX5_ESWITCH_OFFLOADS)
2541 return 0;
2542
2543 return mlx5_esw_offloads_pf_vf_devlink_port_init(esw, vport);
2544 }
2545
mlx5_esw_offloads_cleanup_pf_vf_rep(struct mlx5_eswitch * esw,struct mlx5_vport * vport)2546 void mlx5_esw_offloads_cleanup_pf_vf_rep(struct mlx5_eswitch *esw, struct mlx5_vport *vport)
2547 {
2548 if (esw->mode != MLX5_ESWITCH_OFFLOADS)
2549 return;
2550
2551 mlx5_esw_offloads_pf_vf_devlink_port_cleanup(esw, vport);
2552 }
2553
mlx5_esw_offloads_init_sf_rep(struct mlx5_eswitch * esw,struct mlx5_vport * vport,struct mlx5_devlink_port * dl_port,u32 controller,u32 sfnum)2554 int mlx5_esw_offloads_init_sf_rep(struct mlx5_eswitch *esw, struct mlx5_vport *vport,
2555 struct mlx5_devlink_port *dl_port,
2556 u32 controller, u32 sfnum)
2557 {
2558 return mlx5_esw_offloads_sf_devlink_port_init(esw, vport, dl_port, controller, sfnum);
2559 }
2560
mlx5_esw_offloads_cleanup_sf_rep(struct mlx5_eswitch * esw,struct mlx5_vport * vport)2561 void mlx5_esw_offloads_cleanup_sf_rep(struct mlx5_eswitch *esw, struct mlx5_vport *vport)
2562 {
2563 mlx5_esw_offloads_sf_devlink_port_cleanup(esw, vport);
2564 }
2565
mlx5_esw_offloads_load_rep(struct mlx5_eswitch * esw,struct mlx5_vport * vport)2566 int mlx5_esw_offloads_load_rep(struct mlx5_eswitch *esw, struct mlx5_vport *vport)
2567 {
2568 int err;
2569
2570 if (esw->mode != MLX5_ESWITCH_OFFLOADS)
2571 return 0;
2572
2573 err = mlx5_esw_offloads_devlink_port_register(esw, vport);
2574 if (err)
2575 return err;
2576
2577 err = mlx5_esw_offloads_rep_load(esw, vport->vport);
2578 if (err)
2579 goto load_err;
2580 return err;
2581
2582 load_err:
2583 mlx5_esw_offloads_devlink_port_unregister(esw, vport);
2584 return err;
2585 }
2586
mlx5_esw_offloads_unload_rep(struct mlx5_eswitch * esw,struct mlx5_vport * vport)2587 void mlx5_esw_offloads_unload_rep(struct mlx5_eswitch *esw, struct mlx5_vport *vport)
2588 {
2589 if (esw->mode != MLX5_ESWITCH_OFFLOADS)
2590 return;
2591
2592 mlx5_esw_offloads_rep_unload(esw, vport->vport);
2593
2594 mlx5_esw_offloads_devlink_port_unregister(esw, vport);
2595 }
2596
esw_set_slave_root_fdb(struct mlx5_core_dev * master,struct mlx5_core_dev * slave)2597 static int esw_set_slave_root_fdb(struct mlx5_core_dev *master,
2598 struct mlx5_core_dev *slave)
2599 {
2600 u32 in[MLX5_ST_SZ_DW(set_flow_table_root_in)] = {};
2601 u32 out[MLX5_ST_SZ_DW(set_flow_table_root_out)] = {};
2602 struct mlx5_flow_root_namespace *root;
2603 struct mlx5_flow_namespace *ns;
2604 int err;
2605
2606 MLX5_SET(set_flow_table_root_in, in, opcode,
2607 MLX5_CMD_OP_SET_FLOW_TABLE_ROOT);
2608 MLX5_SET(set_flow_table_root_in, in, table_type,
2609 FS_FT_FDB);
2610
2611 if (master) {
2612 ns = mlx5_get_flow_namespace(master,
2613 MLX5_FLOW_NAMESPACE_FDB);
2614 root = find_root(&ns->node);
2615 mutex_lock(&root->chain_lock);
2616 MLX5_SET(set_flow_table_root_in, in,
2617 table_eswitch_owner_vhca_id_valid, 1);
2618 MLX5_SET(set_flow_table_root_in, in,
2619 table_eswitch_owner_vhca_id,
2620 MLX5_CAP_GEN(master, vhca_id));
2621 MLX5_SET(set_flow_table_root_in, in, table_id,
2622 root->root_ft->id);
2623 } else {
2624 ns = mlx5_get_flow_namespace(slave,
2625 MLX5_FLOW_NAMESPACE_FDB);
2626 root = find_root(&ns->node);
2627 mutex_lock(&root->chain_lock);
2628 MLX5_SET(set_flow_table_root_in, in, table_id,
2629 root->root_ft->id);
2630 }
2631
2632 err = mlx5_cmd_exec(slave, in, sizeof(in), out, sizeof(out));
2633 mutex_unlock(&root->chain_lock);
2634
2635 return err;
2636 }
2637
__esw_set_master_egress_rule(struct mlx5_core_dev * master,struct mlx5_core_dev * slave,struct mlx5_vport * vport,struct mlx5_flow_table * acl)2638 static int __esw_set_master_egress_rule(struct mlx5_core_dev *master,
2639 struct mlx5_core_dev *slave,
2640 struct mlx5_vport *vport,
2641 struct mlx5_flow_table *acl)
2642 {
2643 u16 slave_index = MLX5_CAP_GEN(slave, vhca_id);
2644 struct mlx5_flow_handle *flow_rule = NULL;
2645 struct mlx5_flow_destination dest = {};
2646 struct mlx5_flow_act flow_act = {};
2647 struct mlx5_flow_spec *spec;
2648 int err = 0;
2649 void *misc;
2650
2651 spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
2652 if (!spec)
2653 return -ENOMEM;
2654
2655 spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS;
2656 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
2657 misc_parameters);
2658 MLX5_SET(fte_match_set_misc, misc, source_port, MLX5_VPORT_UPLINK);
2659 MLX5_SET(fte_match_set_misc, misc, source_eswitch_owner_vhca_id, slave_index);
2660
2661 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters);
2662 MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
2663 MLX5_SET_TO_ONES(fte_match_set_misc, misc,
2664 source_eswitch_owner_vhca_id);
2665
2666 flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
2667 dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
2668 dest.vport.num = slave->priv.eswitch->manager_vport;
2669 dest.vport.vhca_id = MLX5_CAP_GEN(slave, vhca_id);
2670 dest.vport.flags |= MLX5_FLOW_DEST_VPORT_VHCA_ID;
2671
2672 flow_rule = mlx5_add_flow_rules(acl, spec, &flow_act,
2673 &dest, 1);
2674 if (IS_ERR(flow_rule)) {
2675 err = PTR_ERR(flow_rule);
2676 } else {
2677 err = xa_insert(&vport->egress.offloads.bounce_rules,
2678 slave_index, flow_rule, GFP_KERNEL);
2679 if (err)
2680 mlx5_del_flow_rules(flow_rule);
2681 }
2682
2683 kvfree(spec);
2684 return err;
2685 }
2686
esw_master_egress_create_resources(struct mlx5_eswitch * esw,struct mlx5_flow_namespace * egress_ns,struct mlx5_vport * vport,size_t count)2687 static int esw_master_egress_create_resources(struct mlx5_eswitch *esw,
2688 struct mlx5_flow_namespace *egress_ns,
2689 struct mlx5_vport *vport, size_t count)
2690 {
2691 int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
2692 struct mlx5_flow_table_attr ft_attr = {
2693 .max_fte = count, .prio = 0, .level = 0,
2694 };
2695 struct mlx5_flow_table *acl;
2696 struct mlx5_flow_group *g;
2697 void *match_criteria;
2698 u32 *flow_group_in;
2699 int err;
2700
2701 if (vport->egress.acl)
2702 return 0;
2703
2704 flow_group_in = kvzalloc(inlen, GFP_KERNEL);
2705 if (!flow_group_in)
2706 return -ENOMEM;
2707
2708 if (vport->vport || mlx5_core_is_ecpf(esw->dev))
2709 ft_attr.flags = MLX5_FLOW_TABLE_OTHER_VPORT;
2710
2711 acl = mlx5_create_vport_flow_table(egress_ns, &ft_attr, vport->vport);
2712 if (IS_ERR(acl)) {
2713 err = PTR_ERR(acl);
2714 goto out;
2715 }
2716
2717 match_criteria = MLX5_ADDR_OF(create_flow_group_in, flow_group_in,
2718 match_criteria);
2719 MLX5_SET_TO_ONES(fte_match_param, match_criteria,
2720 misc_parameters.source_port);
2721 MLX5_SET_TO_ONES(fte_match_param, match_criteria,
2722 misc_parameters.source_eswitch_owner_vhca_id);
2723 MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable,
2724 MLX5_MATCH_MISC_PARAMETERS);
2725
2726 MLX5_SET(create_flow_group_in, flow_group_in,
2727 source_eswitch_owner_vhca_id_valid, 1);
2728 MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 0);
2729 MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, count);
2730
2731 g = mlx5_create_flow_group(acl, flow_group_in);
2732 if (IS_ERR(g)) {
2733 err = PTR_ERR(g);
2734 goto err_group;
2735 }
2736
2737 vport->egress.acl = acl;
2738 vport->egress.offloads.bounce_grp = g;
2739 vport->egress.type = VPORT_EGRESS_ACL_TYPE_SHARED_FDB;
2740 xa_init_flags(&vport->egress.offloads.bounce_rules, XA_FLAGS_ALLOC);
2741
2742 kvfree(flow_group_in);
2743
2744 return 0;
2745
2746 err_group:
2747 mlx5_destroy_flow_table(acl);
2748 out:
2749 kvfree(flow_group_in);
2750 return err;
2751 }
2752
esw_master_egress_destroy_resources(struct mlx5_vport * vport)2753 static void esw_master_egress_destroy_resources(struct mlx5_vport *vport)
2754 {
2755 if (!xa_empty(&vport->egress.offloads.bounce_rules))
2756 return;
2757 mlx5_destroy_flow_group(vport->egress.offloads.bounce_grp);
2758 vport->egress.offloads.bounce_grp = NULL;
2759 mlx5_destroy_flow_table(vport->egress.acl);
2760 vport->egress.acl = NULL;
2761 }
2762
esw_set_master_egress_rule(struct mlx5_core_dev * master,struct mlx5_core_dev * slave,size_t count)2763 static int esw_set_master_egress_rule(struct mlx5_core_dev *master,
2764 struct mlx5_core_dev *slave, size_t count)
2765 {
2766 struct mlx5_eswitch *esw = master->priv.eswitch;
2767 u16 slave_index = MLX5_CAP_GEN(slave, vhca_id);
2768 struct mlx5_flow_namespace *egress_ns;
2769 struct mlx5_vport *vport;
2770 int err;
2771
2772 vport = mlx5_eswitch_get_vport(esw, esw->manager_vport);
2773 if (IS_ERR(vport))
2774 return PTR_ERR(vport);
2775
2776 egress_ns = mlx5_get_flow_vport_acl_namespace(master,
2777 MLX5_FLOW_NAMESPACE_ESW_EGRESS,
2778 vport->index);
2779 if (!egress_ns)
2780 return -EINVAL;
2781
2782 if (vport->egress.acl && vport->egress.type != VPORT_EGRESS_ACL_TYPE_SHARED_FDB)
2783 return 0;
2784
2785 err = esw_master_egress_create_resources(esw, egress_ns, vport, count);
2786 if (err)
2787 return err;
2788
2789 if (xa_load(&vport->egress.offloads.bounce_rules, slave_index))
2790 return -EINVAL;
2791
2792 err = __esw_set_master_egress_rule(master, slave, vport, vport->egress.acl);
2793 if (err)
2794 goto err_rule;
2795
2796 return 0;
2797
2798 err_rule:
2799 esw_master_egress_destroy_resources(vport);
2800 return err;
2801 }
2802
esw_unset_master_egress_rule(struct mlx5_core_dev * dev,struct mlx5_core_dev * slave_dev)2803 static void esw_unset_master_egress_rule(struct mlx5_core_dev *dev,
2804 struct mlx5_core_dev *slave_dev)
2805 {
2806 struct mlx5_vport *vport;
2807
2808 vport = mlx5_eswitch_get_vport(dev->priv.eswitch,
2809 dev->priv.eswitch->manager_vport);
2810
2811 esw_acl_egress_ofld_bounce_rule_destroy(vport, MLX5_CAP_GEN(slave_dev, vhca_id));
2812
2813 if (xa_empty(&vport->egress.offloads.bounce_rules)) {
2814 esw_acl_egress_ofld_cleanup(vport);
2815 xa_destroy(&vport->egress.offloads.bounce_rules);
2816 }
2817 }
2818
mlx5_eswitch_offloads_single_fdb_add_one(struct mlx5_eswitch * master_esw,struct mlx5_eswitch * slave_esw,int max_slaves)2819 int mlx5_eswitch_offloads_single_fdb_add_one(struct mlx5_eswitch *master_esw,
2820 struct mlx5_eswitch *slave_esw, int max_slaves)
2821 {
2822 int err;
2823
2824 err = esw_set_slave_root_fdb(master_esw->dev,
2825 slave_esw->dev);
2826 if (err)
2827 return err;
2828
2829 err = esw_set_master_egress_rule(master_esw->dev,
2830 slave_esw->dev, max_slaves);
2831 if (err)
2832 goto err_acl;
2833
2834 return err;
2835
2836 err_acl:
2837 esw_set_slave_root_fdb(NULL, slave_esw->dev);
2838 return err;
2839 }
2840
mlx5_eswitch_offloads_single_fdb_del_one(struct mlx5_eswitch * master_esw,struct mlx5_eswitch * slave_esw)2841 void mlx5_eswitch_offloads_single_fdb_del_one(struct mlx5_eswitch *master_esw,
2842 struct mlx5_eswitch *slave_esw)
2843 {
2844 esw_set_slave_root_fdb(NULL, slave_esw->dev);
2845 esw_unset_master_egress_rule(master_esw->dev, slave_esw->dev);
2846 }
2847
2848 #define ESW_OFFLOADS_DEVCOM_PAIR (0)
2849 #define ESW_OFFLOADS_DEVCOM_UNPAIR (1)
2850
mlx5_esw_offloads_rep_event_unpair(struct mlx5_eswitch * esw,struct mlx5_eswitch * peer_esw)2851 static void mlx5_esw_offloads_rep_event_unpair(struct mlx5_eswitch *esw,
2852 struct mlx5_eswitch *peer_esw)
2853 {
2854 const struct mlx5_eswitch_rep_ops *ops;
2855 struct mlx5_eswitch_rep *rep;
2856 unsigned long i;
2857 u8 rep_type;
2858
2859 mlx5_esw_for_each_rep(esw, i, rep) {
2860 rep_type = NUM_REP_TYPES;
2861 while (rep_type--) {
2862 ops = esw->offloads.rep_ops[rep_type];
2863 if (atomic_read(&rep->rep_data[rep_type].state) == REP_LOADED &&
2864 ops->event)
2865 ops->event(esw, rep, MLX5_SWITCHDEV_EVENT_UNPAIR, peer_esw);
2866 }
2867 }
2868 }
2869
mlx5_esw_offloads_unpair(struct mlx5_eswitch * esw,struct mlx5_eswitch * peer_esw)2870 static void mlx5_esw_offloads_unpair(struct mlx5_eswitch *esw,
2871 struct mlx5_eswitch *peer_esw)
2872 {
2873 #if IS_ENABLED(CONFIG_MLX5_CLS_ACT)
2874 mlx5e_tc_clean_fdb_peer_flows(esw);
2875 #endif
2876 mlx5_esw_offloads_rep_event_unpair(esw, peer_esw);
2877 esw_del_fdb_peer_miss_rules(esw, peer_esw->dev);
2878 }
2879
mlx5_esw_offloads_pair(struct mlx5_eswitch * esw,struct mlx5_eswitch * peer_esw)2880 static int mlx5_esw_offloads_pair(struct mlx5_eswitch *esw,
2881 struct mlx5_eswitch *peer_esw)
2882 {
2883 const struct mlx5_eswitch_rep_ops *ops;
2884 struct mlx5_eswitch_rep *rep;
2885 unsigned long i;
2886 u8 rep_type;
2887 int err;
2888
2889 err = esw_add_fdb_peer_miss_rules(esw, peer_esw->dev);
2890 if (err)
2891 return err;
2892
2893 mlx5_esw_for_each_rep(esw, i, rep) {
2894 for (rep_type = 0; rep_type < NUM_REP_TYPES; rep_type++) {
2895 ops = esw->offloads.rep_ops[rep_type];
2896 if (atomic_read(&rep->rep_data[rep_type].state) == REP_LOADED &&
2897 ops->event) {
2898 err = ops->event(esw, rep, MLX5_SWITCHDEV_EVENT_PAIR, peer_esw);
2899 if (err)
2900 goto err_out;
2901 }
2902 }
2903 }
2904
2905 return 0;
2906
2907 err_out:
2908 mlx5_esw_offloads_unpair(esw, peer_esw);
2909 return err;
2910 }
2911
mlx5_esw_offloads_set_ns_peer(struct mlx5_eswitch * esw,struct mlx5_eswitch * peer_esw,bool pair)2912 static int mlx5_esw_offloads_set_ns_peer(struct mlx5_eswitch *esw,
2913 struct mlx5_eswitch *peer_esw,
2914 bool pair)
2915 {
2916 u16 peer_vhca_id = MLX5_CAP_GEN(peer_esw->dev, vhca_id);
2917 u16 vhca_id = MLX5_CAP_GEN(esw->dev, vhca_id);
2918 struct mlx5_flow_root_namespace *peer_ns;
2919 struct mlx5_flow_root_namespace *ns;
2920 int err;
2921
2922 peer_ns = peer_esw->dev->priv.steering->fdb_root_ns;
2923 ns = esw->dev->priv.steering->fdb_root_ns;
2924
2925 if (pair) {
2926 err = mlx5_flow_namespace_set_peer(ns, peer_ns, peer_vhca_id);
2927 if (err)
2928 return err;
2929
2930 err = mlx5_flow_namespace_set_peer(peer_ns, ns, vhca_id);
2931 if (err) {
2932 mlx5_flow_namespace_set_peer(ns, NULL, peer_vhca_id);
2933 return err;
2934 }
2935 } else {
2936 mlx5_flow_namespace_set_peer(ns, NULL, peer_vhca_id);
2937 mlx5_flow_namespace_set_peer(peer_ns, NULL, vhca_id);
2938 }
2939
2940 return 0;
2941 }
2942
mlx5_esw_offloads_devcom_event(int event,void * my_data,void * event_data)2943 static int mlx5_esw_offloads_devcom_event(int event,
2944 void *my_data,
2945 void *event_data)
2946 {
2947 struct mlx5_eswitch *esw = my_data;
2948 struct mlx5_eswitch *peer_esw = event_data;
2949 u16 esw_i, peer_esw_i;
2950 bool esw_paired;
2951 int err;
2952
2953 peer_esw_i = MLX5_CAP_GEN(peer_esw->dev, vhca_id);
2954 esw_i = MLX5_CAP_GEN(esw->dev, vhca_id);
2955 esw_paired = !!xa_load(&esw->paired, peer_esw_i);
2956
2957 switch (event) {
2958 case ESW_OFFLOADS_DEVCOM_PAIR:
2959 if (mlx5_eswitch_vport_match_metadata_enabled(esw) !=
2960 mlx5_eswitch_vport_match_metadata_enabled(peer_esw))
2961 break;
2962
2963 if (esw_paired)
2964 break;
2965
2966 err = mlx5_esw_offloads_set_ns_peer(esw, peer_esw, true);
2967 if (err)
2968 goto err_out;
2969
2970 err = mlx5_esw_offloads_pair(esw, peer_esw);
2971 if (err)
2972 goto err_peer;
2973
2974 err = mlx5_esw_offloads_pair(peer_esw, esw);
2975 if (err)
2976 goto err_pair;
2977
2978 err = xa_insert(&esw->paired, peer_esw_i, peer_esw, GFP_KERNEL);
2979 if (err)
2980 goto err_xa;
2981
2982 err = xa_insert(&peer_esw->paired, esw_i, esw, GFP_KERNEL);
2983 if (err)
2984 goto err_peer_xa;
2985
2986 esw->num_peers++;
2987 peer_esw->num_peers++;
2988 mlx5_devcom_comp_set_ready(esw->devcom, true);
2989 break;
2990
2991 case ESW_OFFLOADS_DEVCOM_UNPAIR:
2992 if (!esw_paired)
2993 break;
2994
2995 peer_esw->num_peers--;
2996 esw->num_peers--;
2997 if (!esw->num_peers && !peer_esw->num_peers)
2998 mlx5_devcom_comp_set_ready(esw->devcom, false);
2999 xa_erase(&peer_esw->paired, esw_i);
3000 xa_erase(&esw->paired, peer_esw_i);
3001 mlx5_esw_offloads_unpair(peer_esw, esw);
3002 mlx5_esw_offloads_unpair(esw, peer_esw);
3003 mlx5_esw_offloads_set_ns_peer(esw, peer_esw, false);
3004 break;
3005 }
3006
3007 return 0;
3008
3009 err_peer_xa:
3010 xa_erase(&esw->paired, peer_esw_i);
3011 err_xa:
3012 mlx5_esw_offloads_unpair(peer_esw, esw);
3013 err_pair:
3014 mlx5_esw_offloads_unpair(esw, peer_esw);
3015 err_peer:
3016 mlx5_esw_offloads_set_ns_peer(esw, peer_esw, false);
3017 err_out:
3018 mlx5_core_err(esw->dev, "esw offloads devcom event failure, event %u err %d",
3019 event, err);
3020 return err;
3021 }
3022
mlx5_esw_offloads_devcom_init(struct mlx5_eswitch * esw,u64 key)3023 void mlx5_esw_offloads_devcom_init(struct mlx5_eswitch *esw, u64 key)
3024 {
3025 int i;
3026
3027 for (i = 0; i < MLX5_MAX_PORTS; i++)
3028 INIT_LIST_HEAD(&esw->offloads.peer_flows[i]);
3029 mutex_init(&esw->offloads.peer_mutex);
3030
3031 if (!MLX5_CAP_ESW(esw->dev, merged_eswitch))
3032 return;
3033
3034 if ((MLX5_VPORT_MANAGER(esw->dev) || mlx5_core_is_ecpf_esw_manager(esw->dev)) &&
3035 !mlx5_lag_is_supported(esw->dev))
3036 return;
3037
3038 xa_init(&esw->paired);
3039 esw->num_peers = 0;
3040 esw->devcom = mlx5_devcom_register_component(esw->dev->priv.devc,
3041 MLX5_DEVCOM_ESW_OFFLOADS,
3042 key,
3043 mlx5_esw_offloads_devcom_event,
3044 esw);
3045 if (IS_ERR_OR_NULL(esw->devcom))
3046 return;
3047
3048 mlx5_devcom_send_event(esw->devcom,
3049 ESW_OFFLOADS_DEVCOM_PAIR,
3050 ESW_OFFLOADS_DEVCOM_UNPAIR,
3051 esw);
3052 }
3053
mlx5_esw_offloads_devcom_cleanup(struct mlx5_eswitch * esw)3054 void mlx5_esw_offloads_devcom_cleanup(struct mlx5_eswitch *esw)
3055 {
3056 if (IS_ERR_OR_NULL(esw->devcom))
3057 return;
3058
3059 mlx5_devcom_send_event(esw->devcom,
3060 ESW_OFFLOADS_DEVCOM_UNPAIR,
3061 ESW_OFFLOADS_DEVCOM_UNPAIR,
3062 esw);
3063
3064 mlx5_devcom_unregister_component(esw->devcom);
3065 xa_destroy(&esw->paired);
3066 esw->devcom = NULL;
3067 }
3068
mlx5_esw_offloads_devcom_is_ready(struct mlx5_eswitch * esw)3069 bool mlx5_esw_offloads_devcom_is_ready(struct mlx5_eswitch *esw)
3070 {
3071 return mlx5_devcom_comp_is_ready(esw->devcom);
3072 }
3073
mlx5_esw_vport_match_metadata_supported(const struct mlx5_eswitch * esw)3074 bool mlx5_esw_vport_match_metadata_supported(const struct mlx5_eswitch *esw)
3075 {
3076 if (!MLX5_CAP_ESW(esw->dev, esw_uplink_ingress_acl))
3077 return false;
3078
3079 if (!(MLX5_CAP_ESW_FLOWTABLE(esw->dev, fdb_to_vport_reg_c_id) &
3080 MLX5_FDB_TO_VPORT_REG_C_0))
3081 return false;
3082
3083 return true;
3084 }
3085
3086 #define MLX5_ESW_METADATA_RSVD_UPLINK 1
3087
3088 /* Share the same metadata for uplink's. This is fine because:
3089 * (a) In shared FDB mode (LAG) both uplink's are treated the
3090 * same and tagged with the same metadata.
3091 * (b) In non shared FDB mode, packets from physical port0
3092 * cannot hit eswitch of PF1 and vice versa.
3093 */
mlx5_esw_match_metadata_reserved(struct mlx5_eswitch * esw)3094 static u32 mlx5_esw_match_metadata_reserved(struct mlx5_eswitch *esw)
3095 {
3096 return MLX5_ESW_METADATA_RSVD_UPLINK;
3097 }
3098
mlx5_esw_match_metadata_alloc(struct mlx5_eswitch * esw)3099 u32 mlx5_esw_match_metadata_alloc(struct mlx5_eswitch *esw)
3100 {
3101 u32 vport_end_ida = (1 << ESW_VPORT_BITS) - 1;
3102 /* Reserve 0xf for internal port offload */
3103 u32 max_pf_num = (1 << ESW_PFNUM_BITS) - 2;
3104 u32 pf_num;
3105 int id;
3106
3107 /* Only 4 bits of pf_num */
3108 pf_num = mlx5_get_dev_index(esw->dev);
3109 if (pf_num > max_pf_num)
3110 return 0;
3111
3112 /* Metadata is 4 bits of PFNUM and 12 bits of unique id */
3113 /* Use only non-zero vport_id (2-4095) for all PF's */
3114 id = ida_alloc_range(&esw->offloads.vport_metadata_ida,
3115 MLX5_ESW_METADATA_RSVD_UPLINK + 1,
3116 vport_end_ida, GFP_KERNEL);
3117 if (id < 0)
3118 return 0;
3119 id = (pf_num << ESW_VPORT_BITS) | id;
3120 return id;
3121 }
3122
mlx5_esw_match_metadata_free(struct mlx5_eswitch * esw,u32 metadata)3123 void mlx5_esw_match_metadata_free(struct mlx5_eswitch *esw, u32 metadata)
3124 {
3125 u32 vport_bit_mask = (1 << ESW_VPORT_BITS) - 1;
3126
3127 /* Metadata contains only 12 bits of actual ida id */
3128 ida_free(&esw->offloads.vport_metadata_ida, metadata & vport_bit_mask);
3129 }
3130
esw_offloads_vport_metadata_setup(struct mlx5_eswitch * esw,struct mlx5_vport * vport)3131 static int esw_offloads_vport_metadata_setup(struct mlx5_eswitch *esw,
3132 struct mlx5_vport *vport)
3133 {
3134 if (vport->vport == MLX5_VPORT_UPLINK)
3135 vport->default_metadata = mlx5_esw_match_metadata_reserved(esw);
3136 else
3137 vport->default_metadata = mlx5_esw_match_metadata_alloc(esw);
3138
3139 vport->metadata = vport->default_metadata;
3140 return vport->metadata ? 0 : -ENOSPC;
3141 }
3142
esw_offloads_vport_metadata_cleanup(struct mlx5_eswitch * esw,struct mlx5_vport * vport)3143 static void esw_offloads_vport_metadata_cleanup(struct mlx5_eswitch *esw,
3144 struct mlx5_vport *vport)
3145 {
3146 if (!vport->default_metadata)
3147 return;
3148
3149 if (vport->vport == MLX5_VPORT_UPLINK)
3150 return;
3151
3152 WARN_ON(vport->metadata != vport->default_metadata);
3153 mlx5_esw_match_metadata_free(esw, vport->default_metadata);
3154 }
3155
esw_offloads_metadata_uninit(struct mlx5_eswitch * esw)3156 static void esw_offloads_metadata_uninit(struct mlx5_eswitch *esw)
3157 {
3158 struct mlx5_vport *vport;
3159 unsigned long i;
3160
3161 if (!mlx5_eswitch_vport_match_metadata_enabled(esw))
3162 return;
3163
3164 mlx5_esw_for_each_vport(esw, i, vport)
3165 esw_offloads_vport_metadata_cleanup(esw, vport);
3166 }
3167
esw_offloads_metadata_init(struct mlx5_eswitch * esw)3168 static int esw_offloads_metadata_init(struct mlx5_eswitch *esw)
3169 {
3170 struct mlx5_vport *vport;
3171 unsigned long i;
3172 int err;
3173
3174 if (!mlx5_eswitch_vport_match_metadata_enabled(esw))
3175 return 0;
3176
3177 mlx5_esw_for_each_vport(esw, i, vport) {
3178 err = esw_offloads_vport_metadata_setup(esw, vport);
3179 if (err)
3180 goto metadata_err;
3181 }
3182
3183 return 0;
3184
3185 metadata_err:
3186 esw_offloads_metadata_uninit(esw);
3187 return err;
3188 }
3189
3190 int
esw_vport_create_offloads_acl_tables(struct mlx5_eswitch * esw,struct mlx5_vport * vport)3191 esw_vport_create_offloads_acl_tables(struct mlx5_eswitch *esw,
3192 struct mlx5_vport *vport)
3193 {
3194 int err;
3195
3196 err = esw_acl_ingress_ofld_setup(esw, vport);
3197 if (err)
3198 return err;
3199
3200 err = esw_acl_egress_ofld_setup(esw, vport);
3201 if (err)
3202 goto egress_err;
3203
3204 return 0;
3205
3206 egress_err:
3207 esw_acl_ingress_ofld_cleanup(esw, vport);
3208 return err;
3209 }
3210
3211 void
esw_vport_destroy_offloads_acl_tables(struct mlx5_eswitch * esw,struct mlx5_vport * vport)3212 esw_vport_destroy_offloads_acl_tables(struct mlx5_eswitch *esw,
3213 struct mlx5_vport *vport)
3214 {
3215 esw_acl_egress_ofld_cleanup(vport);
3216 esw_acl_ingress_ofld_cleanup(esw, vport);
3217 }
3218
esw_create_offloads_acl_tables(struct mlx5_eswitch * esw)3219 static int esw_create_offloads_acl_tables(struct mlx5_eswitch *esw)
3220 {
3221 struct mlx5_vport *uplink, *manager;
3222 int ret;
3223
3224 uplink = mlx5_eswitch_get_vport(esw, MLX5_VPORT_UPLINK);
3225 if (IS_ERR(uplink))
3226 return PTR_ERR(uplink);
3227
3228 ret = esw_vport_create_offloads_acl_tables(esw, uplink);
3229 if (ret)
3230 return ret;
3231
3232 manager = mlx5_eswitch_get_vport(esw, esw->manager_vport);
3233 if (IS_ERR(manager)) {
3234 ret = PTR_ERR(manager);
3235 goto err_manager;
3236 }
3237
3238 ret = esw_vport_create_offloads_acl_tables(esw, manager);
3239 if (ret)
3240 goto err_manager;
3241
3242 return 0;
3243
3244 err_manager:
3245 esw_vport_destroy_offloads_acl_tables(esw, uplink);
3246 return ret;
3247 }
3248
esw_destroy_offloads_acl_tables(struct mlx5_eswitch * esw)3249 static void esw_destroy_offloads_acl_tables(struct mlx5_eswitch *esw)
3250 {
3251 struct mlx5_vport *vport;
3252
3253 vport = mlx5_eswitch_get_vport(esw, esw->manager_vport);
3254 if (!IS_ERR(vport))
3255 esw_vport_destroy_offloads_acl_tables(esw, vport);
3256
3257 vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_UPLINK);
3258 if (!IS_ERR(vport))
3259 esw_vport_destroy_offloads_acl_tables(esw, vport);
3260 }
3261
mlx5_eswitch_reload_reps(struct mlx5_eswitch * esw)3262 int mlx5_eswitch_reload_reps(struct mlx5_eswitch *esw)
3263 {
3264 struct mlx5_eswitch_rep *rep;
3265 unsigned long i;
3266 int ret;
3267
3268 if (!esw || esw->mode != MLX5_ESWITCH_OFFLOADS)
3269 return 0;
3270
3271 rep = mlx5_eswitch_get_rep(esw, MLX5_VPORT_UPLINK);
3272 if (atomic_read(&rep->rep_data[REP_ETH].state) != REP_LOADED)
3273 return 0;
3274
3275 ret = mlx5_esw_offloads_rep_load(esw, MLX5_VPORT_UPLINK);
3276 if (ret)
3277 return ret;
3278
3279 mlx5_esw_for_each_rep(esw, i, rep) {
3280 if (atomic_read(&rep->rep_data[REP_ETH].state) == REP_LOADED)
3281 mlx5_esw_offloads_rep_load(esw, rep->vport);
3282 }
3283
3284 return 0;
3285 }
3286
esw_offloads_steering_init(struct mlx5_eswitch * esw)3287 static int esw_offloads_steering_init(struct mlx5_eswitch *esw)
3288 {
3289 struct mlx5_esw_indir_table *indir;
3290 int err;
3291
3292 memset(&esw->fdb_table.offloads, 0, sizeof(struct offloads_fdb));
3293 mutex_init(&esw->fdb_table.offloads.vports.lock);
3294 hash_init(esw->fdb_table.offloads.vports.table);
3295 atomic64_set(&esw->user_count, 0);
3296
3297 indir = mlx5_esw_indir_table_init();
3298 if (IS_ERR(indir)) {
3299 err = PTR_ERR(indir);
3300 goto create_indir_err;
3301 }
3302 esw->fdb_table.offloads.indir = indir;
3303
3304 err = esw_create_offloads_acl_tables(esw);
3305 if (err)
3306 goto create_acl_err;
3307
3308 err = esw_create_offloads_table(esw);
3309 if (err)
3310 goto create_offloads_err;
3311
3312 err = esw_create_restore_table(esw);
3313 if (err)
3314 goto create_restore_err;
3315
3316 err = esw_create_offloads_fdb_tables(esw);
3317 if (err)
3318 goto create_fdb_err;
3319
3320 err = esw_create_vport_rx_group(esw);
3321 if (err)
3322 goto create_fg_err;
3323
3324 err = esw_create_vport_rx_drop_group(esw);
3325 if (err)
3326 goto create_rx_drop_fg_err;
3327
3328 err = esw_create_vport_rx_drop_rule(esw);
3329 if (err)
3330 goto create_rx_drop_rule_err;
3331
3332 return 0;
3333
3334 create_rx_drop_rule_err:
3335 esw_destroy_vport_rx_drop_group(esw);
3336 create_rx_drop_fg_err:
3337 esw_destroy_vport_rx_group(esw);
3338 create_fg_err:
3339 esw_destroy_offloads_fdb_tables(esw);
3340 create_fdb_err:
3341 esw_destroy_restore_table(esw);
3342 create_restore_err:
3343 esw_destroy_offloads_table(esw);
3344 create_offloads_err:
3345 esw_destroy_offloads_acl_tables(esw);
3346 create_acl_err:
3347 mlx5_esw_indir_table_destroy(esw->fdb_table.offloads.indir);
3348 create_indir_err:
3349 mutex_destroy(&esw->fdb_table.offloads.vports.lock);
3350 return err;
3351 }
3352
esw_offloads_steering_cleanup(struct mlx5_eswitch * esw)3353 static void esw_offloads_steering_cleanup(struct mlx5_eswitch *esw)
3354 {
3355 esw_destroy_vport_rx_drop_rule(esw);
3356 esw_destroy_vport_rx_drop_group(esw);
3357 esw_destroy_vport_rx_group(esw);
3358 esw_destroy_offloads_fdb_tables(esw);
3359 esw_destroy_restore_table(esw);
3360 esw_destroy_offloads_table(esw);
3361 esw_destroy_offloads_acl_tables(esw);
3362 mlx5_esw_indir_table_destroy(esw->fdb_table.offloads.indir);
3363 mutex_destroy(&esw->fdb_table.offloads.vports.lock);
3364 }
3365
3366 static void
esw_vfs_changed_event_handler(struct mlx5_eswitch * esw,const u32 * out)3367 esw_vfs_changed_event_handler(struct mlx5_eswitch *esw, const u32 *out)
3368 {
3369 struct devlink *devlink;
3370 bool host_pf_disabled;
3371 u16 new_num_vfs;
3372
3373 new_num_vfs = MLX5_GET(query_esw_functions_out, out,
3374 host_params_context.host_num_of_vfs);
3375 host_pf_disabled = MLX5_GET(query_esw_functions_out, out,
3376 host_params_context.host_pf_disabled);
3377
3378 if (new_num_vfs == esw->esw_funcs.num_vfs || host_pf_disabled)
3379 return;
3380
3381 devlink = priv_to_devlink(esw->dev);
3382 devl_lock(devlink);
3383 /* Number of VFs can only change from "0 to x" or "x to 0". */
3384 if (esw->esw_funcs.num_vfs > 0) {
3385 mlx5_eswitch_unload_vf_vports(esw, esw->esw_funcs.num_vfs);
3386 } else {
3387 int err;
3388
3389 err = mlx5_eswitch_load_vf_vports(esw, new_num_vfs,
3390 MLX5_VPORT_UC_ADDR_CHANGE);
3391 if (err) {
3392 devl_unlock(devlink);
3393 return;
3394 }
3395 }
3396 esw->esw_funcs.num_vfs = new_num_vfs;
3397 devl_unlock(devlink);
3398 }
3399
esw_functions_changed_event_handler(struct work_struct * work)3400 static void esw_functions_changed_event_handler(struct work_struct *work)
3401 {
3402 struct mlx5_host_work *host_work;
3403 struct mlx5_eswitch *esw;
3404 const u32 *out;
3405
3406 host_work = container_of(work, struct mlx5_host_work, work);
3407 esw = host_work->esw;
3408
3409 out = mlx5_esw_query_functions(esw->dev);
3410 if (IS_ERR(out))
3411 goto out;
3412
3413 esw_vfs_changed_event_handler(esw, out);
3414 kvfree(out);
3415 out:
3416 kfree(host_work);
3417 }
3418
mlx5_esw_funcs_changed_handler(struct notifier_block * nb,unsigned long type,void * data)3419 int mlx5_esw_funcs_changed_handler(struct notifier_block *nb, unsigned long type, void *data)
3420 {
3421 struct mlx5_esw_functions *esw_funcs;
3422 struct mlx5_host_work *host_work;
3423 struct mlx5_eswitch *esw;
3424
3425 host_work = kzalloc(sizeof(*host_work), GFP_ATOMIC);
3426 if (!host_work)
3427 return NOTIFY_DONE;
3428
3429 esw_funcs = mlx5_nb_cof(nb, struct mlx5_esw_functions, nb);
3430 esw = container_of(esw_funcs, struct mlx5_eswitch, esw_funcs);
3431
3432 host_work->esw = esw;
3433
3434 INIT_WORK(&host_work->work, esw_functions_changed_event_handler);
3435 queue_work(esw->work_queue, &host_work->work);
3436
3437 return NOTIFY_OK;
3438 }
3439
mlx5_esw_host_number_init(struct mlx5_eswitch * esw)3440 static int mlx5_esw_host_number_init(struct mlx5_eswitch *esw)
3441 {
3442 const u32 *query_host_out;
3443
3444 if (!mlx5_core_is_ecpf_esw_manager(esw->dev))
3445 return 0;
3446
3447 query_host_out = mlx5_esw_query_functions(esw->dev);
3448 if (IS_ERR(query_host_out))
3449 return PTR_ERR(query_host_out);
3450
3451 /* Mark non local controller with non zero controller number. */
3452 esw->offloads.host_number = MLX5_GET(query_esw_functions_out, query_host_out,
3453 host_params_context.host_number);
3454 kvfree(query_host_out);
3455 return 0;
3456 }
3457
mlx5_esw_offloads_controller_valid(const struct mlx5_eswitch * esw,u32 controller)3458 bool mlx5_esw_offloads_controller_valid(const struct mlx5_eswitch *esw, u32 controller)
3459 {
3460 /* Local controller is always valid */
3461 if (controller == 0)
3462 return true;
3463
3464 if (!mlx5_core_is_ecpf_esw_manager(esw->dev))
3465 return false;
3466
3467 /* External host number starts with zero in device */
3468 return (controller == esw->offloads.host_number + 1);
3469 }
3470
esw_offloads_enable(struct mlx5_eswitch * esw)3471 int esw_offloads_enable(struct mlx5_eswitch *esw)
3472 {
3473 struct mapping_ctx *reg_c0_obj_pool;
3474 struct mlx5_vport *vport;
3475 unsigned long i;
3476 u64 mapping_id;
3477 int err;
3478
3479 mutex_init(&esw->offloads.termtbl_mutex);
3480 mlx5_rdma_enable_roce(esw->dev);
3481
3482 err = mlx5_esw_host_number_init(esw);
3483 if (err)
3484 goto err_metadata;
3485
3486 err = esw_offloads_metadata_init(esw);
3487 if (err)
3488 goto err_metadata;
3489
3490 err = esw_set_passing_vport_metadata(esw, true);
3491 if (err)
3492 goto err_vport_metadata;
3493
3494 mapping_id = mlx5_query_nic_system_image_guid(esw->dev);
3495
3496 reg_c0_obj_pool = mapping_create_for_id(mapping_id, MAPPING_TYPE_CHAIN,
3497 sizeof(struct mlx5_mapped_obj),
3498 ESW_REG_C0_USER_DATA_METADATA_MASK,
3499 true);
3500
3501 if (IS_ERR(reg_c0_obj_pool)) {
3502 err = PTR_ERR(reg_c0_obj_pool);
3503 goto err_pool;
3504 }
3505 esw->offloads.reg_c0_obj_pool = reg_c0_obj_pool;
3506
3507 err = esw_offloads_steering_init(esw);
3508 if (err)
3509 goto err_steering_init;
3510
3511 /* Representor will control the vport link state */
3512 mlx5_esw_for_each_vf_vport(esw, i, vport, esw->esw_funcs.num_vfs)
3513 vport->info.link_state = MLX5_VPORT_ADMIN_STATE_DOWN;
3514 if (mlx5_core_ec_sriov_enabled(esw->dev))
3515 mlx5_esw_for_each_ec_vf_vport(esw, i, vport, esw->esw_funcs.num_ec_vfs)
3516 vport->info.link_state = MLX5_VPORT_ADMIN_STATE_DOWN;
3517
3518 /* Uplink vport rep must load first. */
3519 err = mlx5_esw_offloads_rep_load(esw, MLX5_VPORT_UPLINK);
3520 if (err)
3521 goto err_uplink;
3522
3523 err = mlx5_eswitch_enable_pf_vf_vports(esw, MLX5_VPORT_UC_ADDR_CHANGE);
3524 if (err)
3525 goto err_vports;
3526
3527 return 0;
3528
3529 err_vports:
3530 mlx5_esw_offloads_rep_unload(esw, MLX5_VPORT_UPLINK);
3531 err_uplink:
3532 esw_offloads_steering_cleanup(esw);
3533 err_steering_init:
3534 mapping_destroy(reg_c0_obj_pool);
3535 err_pool:
3536 esw_set_passing_vport_metadata(esw, false);
3537 err_vport_metadata:
3538 esw_offloads_metadata_uninit(esw);
3539 err_metadata:
3540 mlx5_rdma_disable_roce(esw->dev);
3541 mutex_destroy(&esw->offloads.termtbl_mutex);
3542 return err;
3543 }
3544
esw_offloads_stop(struct mlx5_eswitch * esw,struct netlink_ext_ack * extack)3545 static int esw_offloads_stop(struct mlx5_eswitch *esw,
3546 struct netlink_ext_ack *extack)
3547 {
3548 int err;
3549
3550 esw->mode = MLX5_ESWITCH_LEGACY;
3551
3552 /* If changing from switchdev to legacy mode without sriov enabled,
3553 * no need to create legacy fdb.
3554 */
3555 if (!mlx5_core_is_pf(esw->dev) || !mlx5_sriov_is_enabled(esw->dev))
3556 return 0;
3557
3558 err = mlx5_eswitch_enable_locked(esw, MLX5_ESWITCH_IGNORE_NUM_VFS);
3559 if (err)
3560 NL_SET_ERR_MSG_MOD(extack, "Failed setting eswitch to legacy");
3561
3562 return err;
3563 }
3564
esw_offloads_disable(struct mlx5_eswitch * esw)3565 void esw_offloads_disable(struct mlx5_eswitch *esw)
3566 {
3567 mlx5_eswitch_disable_pf_vf_vports(esw);
3568 mlx5_esw_offloads_rep_unload(esw, MLX5_VPORT_UPLINK);
3569 esw_set_passing_vport_metadata(esw, false);
3570 esw_offloads_steering_cleanup(esw);
3571 mapping_destroy(esw->offloads.reg_c0_obj_pool);
3572 esw_offloads_metadata_uninit(esw);
3573 mlx5_rdma_disable_roce(esw->dev);
3574 mutex_destroy(&esw->offloads.termtbl_mutex);
3575 }
3576
esw_mode_from_devlink(u16 mode,u16 * mlx5_mode)3577 static int esw_mode_from_devlink(u16 mode, u16 *mlx5_mode)
3578 {
3579 switch (mode) {
3580 case DEVLINK_ESWITCH_MODE_LEGACY:
3581 *mlx5_mode = MLX5_ESWITCH_LEGACY;
3582 break;
3583 case DEVLINK_ESWITCH_MODE_SWITCHDEV:
3584 *mlx5_mode = MLX5_ESWITCH_OFFLOADS;
3585 break;
3586 default:
3587 return -EINVAL;
3588 }
3589
3590 return 0;
3591 }
3592
esw_mode_to_devlink(u16 mlx5_mode,u16 * mode)3593 static int esw_mode_to_devlink(u16 mlx5_mode, u16 *mode)
3594 {
3595 switch (mlx5_mode) {
3596 case MLX5_ESWITCH_LEGACY:
3597 *mode = DEVLINK_ESWITCH_MODE_LEGACY;
3598 break;
3599 case MLX5_ESWITCH_OFFLOADS:
3600 *mode = DEVLINK_ESWITCH_MODE_SWITCHDEV;
3601 break;
3602 default:
3603 return -EINVAL;
3604 }
3605
3606 return 0;
3607 }
3608
esw_inline_mode_from_devlink(u8 mode,u8 * mlx5_mode)3609 static int esw_inline_mode_from_devlink(u8 mode, u8 *mlx5_mode)
3610 {
3611 switch (mode) {
3612 case DEVLINK_ESWITCH_INLINE_MODE_NONE:
3613 *mlx5_mode = MLX5_INLINE_MODE_NONE;
3614 break;
3615 case DEVLINK_ESWITCH_INLINE_MODE_LINK:
3616 *mlx5_mode = MLX5_INLINE_MODE_L2;
3617 break;
3618 case DEVLINK_ESWITCH_INLINE_MODE_NETWORK:
3619 *mlx5_mode = MLX5_INLINE_MODE_IP;
3620 break;
3621 case DEVLINK_ESWITCH_INLINE_MODE_TRANSPORT:
3622 *mlx5_mode = MLX5_INLINE_MODE_TCP_UDP;
3623 break;
3624 default:
3625 return -EINVAL;
3626 }
3627
3628 return 0;
3629 }
3630
esw_inline_mode_to_devlink(u8 mlx5_mode,u8 * mode)3631 static int esw_inline_mode_to_devlink(u8 mlx5_mode, u8 *mode)
3632 {
3633 switch (mlx5_mode) {
3634 case MLX5_INLINE_MODE_NONE:
3635 *mode = DEVLINK_ESWITCH_INLINE_MODE_NONE;
3636 break;
3637 case MLX5_INLINE_MODE_L2:
3638 *mode = DEVLINK_ESWITCH_INLINE_MODE_LINK;
3639 break;
3640 case MLX5_INLINE_MODE_IP:
3641 *mode = DEVLINK_ESWITCH_INLINE_MODE_NETWORK;
3642 break;
3643 case MLX5_INLINE_MODE_TCP_UDP:
3644 *mode = DEVLINK_ESWITCH_INLINE_MODE_TRANSPORT;
3645 break;
3646 default:
3647 return -EINVAL;
3648 }
3649
3650 return 0;
3651 }
3652
esw_offloads_devlink_ns_eq_netdev_ns(struct devlink * devlink)3653 static bool esw_offloads_devlink_ns_eq_netdev_ns(struct devlink *devlink)
3654 {
3655 struct net *devl_net, *netdev_net;
3656 struct mlx5_eswitch *esw;
3657
3658 esw = mlx5_devlink_eswitch_nocheck_get(devlink);
3659 netdev_net = dev_net(esw->dev->mlx5e_res.uplink_netdev);
3660 devl_net = devlink_net(devlink);
3661
3662 return net_eq(devl_net, netdev_net);
3663 }
3664
mlx5_eswitch_block_mode(struct mlx5_core_dev * dev)3665 int mlx5_eswitch_block_mode(struct mlx5_core_dev *dev)
3666 {
3667 struct mlx5_eswitch *esw = dev->priv.eswitch;
3668 int err;
3669
3670 if (!mlx5_esw_allowed(esw))
3671 return 0;
3672
3673 /* Take TC into account */
3674 err = mlx5_esw_try_lock(esw);
3675 if (err < 0)
3676 return err;
3677
3678 esw->offloads.num_block_mode++;
3679 mlx5_esw_unlock(esw);
3680 return 0;
3681 }
3682
mlx5_eswitch_unblock_mode(struct mlx5_core_dev * dev)3683 void mlx5_eswitch_unblock_mode(struct mlx5_core_dev *dev)
3684 {
3685 struct mlx5_eswitch *esw = dev->priv.eswitch;
3686
3687 if (!mlx5_esw_allowed(esw))
3688 return;
3689
3690 down_write(&esw->mode_lock);
3691 esw->offloads.num_block_mode--;
3692 up_write(&esw->mode_lock);
3693 }
3694
mlx5_devlink_eswitch_mode_set(struct devlink * devlink,u16 mode,struct netlink_ext_ack * extack)3695 int mlx5_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
3696 struct netlink_ext_ack *extack)
3697 {
3698 u16 cur_mlx5_mode, mlx5_mode = 0;
3699 struct mlx5_eswitch *esw;
3700 int err = 0;
3701
3702 esw = mlx5_devlink_eswitch_get(devlink);
3703 if (IS_ERR(esw))
3704 return PTR_ERR(esw);
3705
3706 if (esw_mode_from_devlink(mode, &mlx5_mode))
3707 return -EINVAL;
3708
3709 if (mode == DEVLINK_ESWITCH_MODE_SWITCHDEV &&
3710 !esw_offloads_devlink_ns_eq_netdev_ns(devlink)) {
3711 NL_SET_ERR_MSG_MOD(extack,
3712 "Can't change E-Switch mode to switchdev when netdev net namespace has diverged from the devlink's.");
3713 return -EPERM;
3714 }
3715
3716 mlx5_lag_disable_change(esw->dev);
3717 err = mlx5_esw_try_lock(esw);
3718 if (err < 0) {
3719 NL_SET_ERR_MSG_MOD(extack, "Can't change mode, E-Switch is busy");
3720 goto enable_lag;
3721 }
3722 cur_mlx5_mode = err;
3723 err = 0;
3724
3725 if (cur_mlx5_mode == mlx5_mode)
3726 goto unlock;
3727
3728 if (esw->offloads.num_block_mode) {
3729 NL_SET_ERR_MSG_MOD(extack,
3730 "Can't change eswitch mode when IPsec SA and/or policies are configured");
3731 err = -EOPNOTSUPP;
3732 goto unlock;
3733 }
3734
3735 mlx5_eswitch_disable_locked(esw);
3736 if (mode == DEVLINK_ESWITCH_MODE_SWITCHDEV) {
3737 if (mlx5_devlink_trap_get_num_active(esw->dev)) {
3738 NL_SET_ERR_MSG_MOD(extack,
3739 "Can't change mode while devlink traps are active");
3740 err = -EOPNOTSUPP;
3741 goto unlock;
3742 }
3743 err = esw_offloads_start(esw, extack);
3744 } else if (mode == DEVLINK_ESWITCH_MODE_LEGACY) {
3745 err = esw_offloads_stop(esw, extack);
3746 mlx5_rescan_drivers(esw->dev);
3747 } else {
3748 err = -EINVAL;
3749 }
3750
3751 unlock:
3752 mlx5_esw_unlock(esw);
3753 enable_lag:
3754 mlx5_lag_enable_change(esw->dev);
3755 return err;
3756 }
3757
mlx5_devlink_eswitch_mode_get(struct devlink * devlink,u16 * mode)3758 int mlx5_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
3759 {
3760 struct mlx5_eswitch *esw;
3761 int err;
3762
3763 esw = mlx5_devlink_eswitch_get(devlink);
3764 if (IS_ERR(esw))
3765 return PTR_ERR(esw);
3766
3767 down_read(&esw->mode_lock);
3768 err = esw_mode_to_devlink(esw->mode, mode);
3769 up_read(&esw->mode_lock);
3770 return err;
3771 }
3772
mlx5_esw_vports_inline_set(struct mlx5_eswitch * esw,u8 mlx5_mode,struct netlink_ext_ack * extack)3773 static int mlx5_esw_vports_inline_set(struct mlx5_eswitch *esw, u8 mlx5_mode,
3774 struct netlink_ext_ack *extack)
3775 {
3776 struct mlx5_core_dev *dev = esw->dev;
3777 struct mlx5_vport *vport;
3778 u16 err_vport_num = 0;
3779 unsigned long i;
3780 int err = 0;
3781
3782 mlx5_esw_for_each_host_func_vport(esw, i, vport, esw->esw_funcs.num_vfs) {
3783 err = mlx5_modify_nic_vport_min_inline(dev, vport->vport, mlx5_mode);
3784 if (err) {
3785 err_vport_num = vport->vport;
3786 NL_SET_ERR_MSG_MOD(extack,
3787 "Failed to set min inline on vport");
3788 goto revert_inline_mode;
3789 }
3790 }
3791 if (mlx5_core_ec_sriov_enabled(esw->dev)) {
3792 mlx5_esw_for_each_ec_vf_vport(esw, i, vport, esw->esw_funcs.num_ec_vfs) {
3793 err = mlx5_modify_nic_vport_min_inline(dev, vport->vport, mlx5_mode);
3794 if (err) {
3795 err_vport_num = vport->vport;
3796 NL_SET_ERR_MSG_MOD(extack,
3797 "Failed to set min inline on vport");
3798 goto revert_ec_vf_inline_mode;
3799 }
3800 }
3801 }
3802 return 0;
3803
3804 revert_ec_vf_inline_mode:
3805 mlx5_esw_for_each_ec_vf_vport(esw, i, vport, esw->esw_funcs.num_ec_vfs) {
3806 if (vport->vport == err_vport_num)
3807 break;
3808 mlx5_modify_nic_vport_min_inline(dev,
3809 vport->vport,
3810 esw->offloads.inline_mode);
3811 }
3812 revert_inline_mode:
3813 mlx5_esw_for_each_host_func_vport(esw, i, vport, esw->esw_funcs.num_vfs) {
3814 if (vport->vport == err_vport_num)
3815 break;
3816 mlx5_modify_nic_vport_min_inline(dev,
3817 vport->vport,
3818 esw->offloads.inline_mode);
3819 }
3820 return err;
3821 }
3822
mlx5_devlink_eswitch_inline_mode_set(struct devlink * devlink,u8 mode,struct netlink_ext_ack * extack)3823 int mlx5_devlink_eswitch_inline_mode_set(struct devlink *devlink, u8 mode,
3824 struct netlink_ext_ack *extack)
3825 {
3826 struct mlx5_core_dev *dev = devlink_priv(devlink);
3827 struct mlx5_eswitch *esw;
3828 u8 mlx5_mode;
3829 int err;
3830
3831 esw = mlx5_devlink_eswitch_get(devlink);
3832 if (IS_ERR(esw))
3833 return PTR_ERR(esw);
3834
3835 down_write(&esw->mode_lock);
3836
3837 switch (MLX5_CAP_ETH(dev, wqe_inline_mode)) {
3838 case MLX5_CAP_INLINE_MODE_NOT_REQUIRED:
3839 if (mode == DEVLINK_ESWITCH_INLINE_MODE_NONE) {
3840 err = 0;
3841 goto out;
3842 }
3843
3844 fallthrough;
3845 case MLX5_CAP_INLINE_MODE_L2:
3846 NL_SET_ERR_MSG_MOD(extack, "Inline mode can't be set");
3847 err = -EOPNOTSUPP;
3848 goto out;
3849 case MLX5_CAP_INLINE_MODE_VPORT_CONTEXT:
3850 break;
3851 }
3852
3853 if (atomic64_read(&esw->offloads.num_flows) > 0) {
3854 NL_SET_ERR_MSG_MOD(extack,
3855 "Can't set inline mode when flows are configured");
3856 err = -EOPNOTSUPP;
3857 goto out;
3858 }
3859
3860 err = esw_inline_mode_from_devlink(mode, &mlx5_mode);
3861 if (err)
3862 goto out;
3863
3864 err = mlx5_esw_vports_inline_set(esw, mlx5_mode, extack);
3865 if (err)
3866 goto out;
3867
3868 esw->offloads.inline_mode = mlx5_mode;
3869 up_write(&esw->mode_lock);
3870 return 0;
3871
3872 out:
3873 up_write(&esw->mode_lock);
3874 return err;
3875 }
3876
mlx5_devlink_eswitch_inline_mode_get(struct devlink * devlink,u8 * mode)3877 int mlx5_devlink_eswitch_inline_mode_get(struct devlink *devlink, u8 *mode)
3878 {
3879 struct mlx5_eswitch *esw;
3880 int err;
3881
3882 esw = mlx5_devlink_eswitch_get(devlink);
3883 if (IS_ERR(esw))
3884 return PTR_ERR(esw);
3885
3886 down_read(&esw->mode_lock);
3887 err = esw_inline_mode_to_devlink(esw->offloads.inline_mode, mode);
3888 up_read(&esw->mode_lock);
3889 return err;
3890 }
3891
mlx5_eswitch_block_encap(struct mlx5_core_dev * dev)3892 bool mlx5_eswitch_block_encap(struct mlx5_core_dev *dev)
3893 {
3894 struct mlx5_eswitch *esw = dev->priv.eswitch;
3895
3896 if (!mlx5_esw_allowed(esw))
3897 return true;
3898
3899 down_write(&esw->mode_lock);
3900 if (esw->mode != MLX5_ESWITCH_LEGACY &&
3901 esw->offloads.encap != DEVLINK_ESWITCH_ENCAP_MODE_NONE) {
3902 up_write(&esw->mode_lock);
3903 return false;
3904 }
3905
3906 esw->offloads.num_block_encap++;
3907 up_write(&esw->mode_lock);
3908 return true;
3909 }
3910
mlx5_eswitch_unblock_encap(struct mlx5_core_dev * dev)3911 void mlx5_eswitch_unblock_encap(struct mlx5_core_dev *dev)
3912 {
3913 struct mlx5_eswitch *esw = dev->priv.eswitch;
3914
3915 if (!mlx5_esw_allowed(esw))
3916 return;
3917
3918 down_write(&esw->mode_lock);
3919 esw->offloads.num_block_encap--;
3920 up_write(&esw->mode_lock);
3921 }
3922
mlx5_devlink_eswitch_encap_mode_set(struct devlink * devlink,enum devlink_eswitch_encap_mode encap,struct netlink_ext_ack * extack)3923 int mlx5_devlink_eswitch_encap_mode_set(struct devlink *devlink,
3924 enum devlink_eswitch_encap_mode encap,
3925 struct netlink_ext_ack *extack)
3926 {
3927 struct mlx5_core_dev *dev = devlink_priv(devlink);
3928 struct mlx5_eswitch *esw;
3929 int err = 0;
3930
3931 esw = mlx5_devlink_eswitch_get(devlink);
3932 if (IS_ERR(esw))
3933 return PTR_ERR(esw);
3934
3935 down_write(&esw->mode_lock);
3936
3937 if (encap != DEVLINK_ESWITCH_ENCAP_MODE_NONE &&
3938 (!MLX5_CAP_ESW_FLOWTABLE_FDB(dev, reformat) ||
3939 !MLX5_CAP_ESW_FLOWTABLE_FDB(dev, decap))) {
3940 err = -EOPNOTSUPP;
3941 goto unlock;
3942 }
3943
3944 if (encap && encap != DEVLINK_ESWITCH_ENCAP_MODE_BASIC) {
3945 err = -EOPNOTSUPP;
3946 goto unlock;
3947 }
3948
3949 if (esw->mode == MLX5_ESWITCH_LEGACY) {
3950 esw->offloads.encap = encap;
3951 goto unlock;
3952 }
3953
3954 if (esw->offloads.encap == encap)
3955 goto unlock;
3956
3957 if (atomic64_read(&esw->offloads.num_flows) > 0) {
3958 NL_SET_ERR_MSG_MOD(extack,
3959 "Can't set encapsulation when flows are configured");
3960 err = -EOPNOTSUPP;
3961 goto unlock;
3962 }
3963
3964 if (esw->offloads.num_block_encap) {
3965 NL_SET_ERR_MSG_MOD(extack,
3966 "Can't set encapsulation when IPsec SA and/or policies are configured");
3967 err = -EOPNOTSUPP;
3968 goto unlock;
3969 }
3970
3971 esw_destroy_offloads_fdb_tables(esw);
3972
3973 esw->offloads.encap = encap;
3974
3975 err = esw_create_offloads_fdb_tables(esw);
3976
3977 if (err) {
3978 NL_SET_ERR_MSG_MOD(extack,
3979 "Failed re-creating fast FDB table");
3980 esw->offloads.encap = !encap;
3981 (void)esw_create_offloads_fdb_tables(esw);
3982 }
3983
3984 unlock:
3985 up_write(&esw->mode_lock);
3986 return err;
3987 }
3988
mlx5_devlink_eswitch_encap_mode_get(struct devlink * devlink,enum devlink_eswitch_encap_mode * encap)3989 int mlx5_devlink_eswitch_encap_mode_get(struct devlink *devlink,
3990 enum devlink_eswitch_encap_mode *encap)
3991 {
3992 struct mlx5_eswitch *esw;
3993
3994 esw = mlx5_devlink_eswitch_get(devlink);
3995 if (IS_ERR(esw))
3996 return PTR_ERR(esw);
3997
3998 down_read(&esw->mode_lock);
3999 *encap = esw->offloads.encap;
4000 up_read(&esw->mode_lock);
4001 return 0;
4002 }
4003
4004 static bool
mlx5_eswitch_vport_has_rep(const struct mlx5_eswitch * esw,u16 vport_num)4005 mlx5_eswitch_vport_has_rep(const struct mlx5_eswitch *esw, u16 vport_num)
4006 {
4007 /* Currently, only ECPF based device has representor for host PF. */
4008 if (vport_num == MLX5_VPORT_PF &&
4009 !mlx5_core_is_ecpf_esw_manager(esw->dev))
4010 return false;
4011
4012 if (vport_num == MLX5_VPORT_ECPF &&
4013 !mlx5_ecpf_vport_exists(esw->dev))
4014 return false;
4015
4016 return true;
4017 }
4018
mlx5_eswitch_register_vport_reps(struct mlx5_eswitch * esw,const struct mlx5_eswitch_rep_ops * ops,u8 rep_type)4019 void mlx5_eswitch_register_vport_reps(struct mlx5_eswitch *esw,
4020 const struct mlx5_eswitch_rep_ops *ops,
4021 u8 rep_type)
4022 {
4023 struct mlx5_eswitch_rep_data *rep_data;
4024 struct mlx5_eswitch_rep *rep;
4025 unsigned long i;
4026
4027 esw->offloads.rep_ops[rep_type] = ops;
4028 mlx5_esw_for_each_rep(esw, i, rep) {
4029 if (likely(mlx5_eswitch_vport_has_rep(esw, rep->vport))) {
4030 rep->esw = esw;
4031 rep_data = &rep->rep_data[rep_type];
4032 atomic_set(&rep_data->state, REP_REGISTERED);
4033 }
4034 }
4035 }
4036 EXPORT_SYMBOL(mlx5_eswitch_register_vport_reps);
4037
mlx5_eswitch_unregister_vport_reps(struct mlx5_eswitch * esw,u8 rep_type)4038 void mlx5_eswitch_unregister_vport_reps(struct mlx5_eswitch *esw, u8 rep_type)
4039 {
4040 struct mlx5_eswitch_rep *rep;
4041 unsigned long i;
4042
4043 if (esw->mode == MLX5_ESWITCH_OFFLOADS)
4044 __unload_reps_all_vport(esw, rep_type);
4045
4046 mlx5_esw_for_each_rep(esw, i, rep)
4047 atomic_set(&rep->rep_data[rep_type].state, REP_UNREGISTERED);
4048 }
4049 EXPORT_SYMBOL(mlx5_eswitch_unregister_vport_reps);
4050
mlx5_eswitch_get_uplink_priv(struct mlx5_eswitch * esw,u8 rep_type)4051 void *mlx5_eswitch_get_uplink_priv(struct mlx5_eswitch *esw, u8 rep_type)
4052 {
4053 struct mlx5_eswitch_rep *rep;
4054
4055 rep = mlx5_eswitch_get_rep(esw, MLX5_VPORT_UPLINK);
4056 return rep->rep_data[rep_type].priv;
4057 }
4058
mlx5_eswitch_get_proto_dev(struct mlx5_eswitch * esw,u16 vport,u8 rep_type)4059 void *mlx5_eswitch_get_proto_dev(struct mlx5_eswitch *esw,
4060 u16 vport,
4061 u8 rep_type)
4062 {
4063 struct mlx5_eswitch_rep *rep;
4064
4065 rep = mlx5_eswitch_get_rep(esw, vport);
4066
4067 if (atomic_read(&rep->rep_data[rep_type].state) == REP_LOADED &&
4068 esw->offloads.rep_ops[rep_type]->get_proto_dev)
4069 return esw->offloads.rep_ops[rep_type]->get_proto_dev(rep);
4070 return NULL;
4071 }
4072 EXPORT_SYMBOL(mlx5_eswitch_get_proto_dev);
4073
mlx5_eswitch_uplink_get_proto_dev(struct mlx5_eswitch * esw,u8 rep_type)4074 void *mlx5_eswitch_uplink_get_proto_dev(struct mlx5_eswitch *esw, u8 rep_type)
4075 {
4076 return mlx5_eswitch_get_proto_dev(esw, MLX5_VPORT_UPLINK, rep_type);
4077 }
4078 EXPORT_SYMBOL(mlx5_eswitch_uplink_get_proto_dev);
4079
mlx5_eswitch_vport_rep(struct mlx5_eswitch * esw,u16 vport)4080 struct mlx5_eswitch_rep *mlx5_eswitch_vport_rep(struct mlx5_eswitch *esw,
4081 u16 vport)
4082 {
4083 return mlx5_eswitch_get_rep(esw, vport);
4084 }
4085 EXPORT_SYMBOL(mlx5_eswitch_vport_rep);
4086
mlx5_eswitch_reg_c1_loopback_enabled(const struct mlx5_eswitch * esw)4087 bool mlx5_eswitch_reg_c1_loopback_enabled(const struct mlx5_eswitch *esw)
4088 {
4089 return !!(esw->flags & MLX5_ESWITCH_REG_C1_LOOPBACK_ENABLED);
4090 }
4091 EXPORT_SYMBOL(mlx5_eswitch_reg_c1_loopback_enabled);
4092
mlx5_eswitch_vport_match_metadata_enabled(const struct mlx5_eswitch * esw)4093 bool mlx5_eswitch_vport_match_metadata_enabled(const struct mlx5_eswitch *esw)
4094 {
4095 return !!(esw->flags & MLX5_ESWITCH_VPORT_MATCH_METADATA);
4096 }
4097 EXPORT_SYMBOL(mlx5_eswitch_vport_match_metadata_enabled);
4098
mlx5_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch * esw,u16 vport_num)4099 u32 mlx5_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw,
4100 u16 vport_num)
4101 {
4102 struct mlx5_vport *vport = mlx5_eswitch_get_vport(esw, vport_num);
4103
4104 if (WARN_ON_ONCE(IS_ERR(vport)))
4105 return 0;
4106
4107 return vport->metadata << (32 - ESW_SOURCE_PORT_METADATA_BITS);
4108 }
4109 EXPORT_SYMBOL(mlx5_eswitch_get_vport_metadata_for_match);
4110
mlx5_esw_query_vport_vhca_id(struct mlx5_eswitch * esw,u16 vport_num,u16 * vhca_id)4111 static int mlx5_esw_query_vport_vhca_id(struct mlx5_eswitch *esw, u16 vport_num, u16 *vhca_id)
4112 {
4113 int query_out_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out);
4114 void *query_ctx;
4115 void *hca_caps;
4116 int err;
4117
4118 *vhca_id = 0;
4119
4120 query_ctx = kzalloc(query_out_sz, GFP_KERNEL);
4121 if (!query_ctx)
4122 return -ENOMEM;
4123
4124 err = mlx5_vport_get_other_func_general_cap(esw->dev, vport_num, query_ctx);
4125 if (err)
4126 goto out_free;
4127
4128 hca_caps = MLX5_ADDR_OF(query_hca_cap_out, query_ctx, capability);
4129 *vhca_id = MLX5_GET(cmd_hca_cap, hca_caps, vhca_id);
4130
4131 out_free:
4132 kfree(query_ctx);
4133 return err;
4134 }
4135
mlx5_esw_vport_vhca_id_set(struct mlx5_eswitch * esw,u16 vport_num)4136 int mlx5_esw_vport_vhca_id_set(struct mlx5_eswitch *esw, u16 vport_num)
4137 {
4138 u16 *old_entry, *vhca_map_entry, vhca_id;
4139 int err;
4140
4141 err = mlx5_esw_query_vport_vhca_id(esw, vport_num, &vhca_id);
4142 if (err) {
4143 esw_warn(esw->dev, "Getting vhca_id for vport failed (vport=%u,err=%d)\n",
4144 vport_num, err);
4145 return err;
4146 }
4147
4148 vhca_map_entry = kmalloc(sizeof(*vhca_map_entry), GFP_KERNEL);
4149 if (!vhca_map_entry)
4150 return -ENOMEM;
4151
4152 *vhca_map_entry = vport_num;
4153 old_entry = xa_store(&esw->offloads.vhca_map, vhca_id, vhca_map_entry, GFP_KERNEL);
4154 if (xa_is_err(old_entry)) {
4155 kfree(vhca_map_entry);
4156 return xa_err(old_entry);
4157 }
4158 kfree(old_entry);
4159 return 0;
4160 }
4161
mlx5_esw_vport_vhca_id_clear(struct mlx5_eswitch * esw,u16 vport_num)4162 void mlx5_esw_vport_vhca_id_clear(struct mlx5_eswitch *esw, u16 vport_num)
4163 {
4164 u16 *vhca_map_entry, vhca_id;
4165 int err;
4166
4167 err = mlx5_esw_query_vport_vhca_id(esw, vport_num, &vhca_id);
4168 if (err)
4169 esw_warn(esw->dev, "Getting vhca_id for vport failed (vport=%hu,err=%d)\n",
4170 vport_num, err);
4171
4172 vhca_map_entry = xa_erase(&esw->offloads.vhca_map, vhca_id);
4173 kfree(vhca_map_entry);
4174 }
4175
mlx5_eswitch_vhca_id_to_vport(struct mlx5_eswitch * esw,u16 vhca_id,u16 * vport_num)4176 int mlx5_eswitch_vhca_id_to_vport(struct mlx5_eswitch *esw, u16 vhca_id, u16 *vport_num)
4177 {
4178 u16 *res = xa_load(&esw->offloads.vhca_map, vhca_id);
4179
4180 if (!res)
4181 return -ENOENT;
4182
4183 *vport_num = *res;
4184 return 0;
4185 }
4186
mlx5_eswitch_get_vport_metadata_for_set(struct mlx5_eswitch * esw,u16 vport_num)4187 u32 mlx5_eswitch_get_vport_metadata_for_set(struct mlx5_eswitch *esw,
4188 u16 vport_num)
4189 {
4190 struct mlx5_vport *vport = mlx5_eswitch_get_vport(esw, vport_num);
4191
4192 if (WARN_ON_ONCE(IS_ERR(vport)))
4193 return 0;
4194
4195 return vport->metadata;
4196 }
4197 EXPORT_SYMBOL(mlx5_eswitch_get_vport_metadata_for_set);
4198
mlx5_devlink_port_fn_hw_addr_get(struct devlink_port * port,u8 * hw_addr,int * hw_addr_len,struct netlink_ext_ack * extack)4199 int mlx5_devlink_port_fn_hw_addr_get(struct devlink_port *port,
4200 u8 *hw_addr, int *hw_addr_len,
4201 struct netlink_ext_ack *extack)
4202 {
4203 struct mlx5_eswitch *esw = mlx5_devlink_eswitch_nocheck_get(port->devlink);
4204 struct mlx5_vport *vport = mlx5_devlink_port_vport_get(port);
4205
4206 mutex_lock(&esw->state_lock);
4207 ether_addr_copy(hw_addr, vport->info.mac);
4208 *hw_addr_len = ETH_ALEN;
4209 mutex_unlock(&esw->state_lock);
4210 return 0;
4211 }
4212
mlx5_devlink_port_fn_hw_addr_set(struct devlink_port * port,const u8 * hw_addr,int hw_addr_len,struct netlink_ext_ack * extack)4213 int mlx5_devlink_port_fn_hw_addr_set(struct devlink_port *port,
4214 const u8 *hw_addr, int hw_addr_len,
4215 struct netlink_ext_ack *extack)
4216 {
4217 struct mlx5_eswitch *esw = mlx5_devlink_eswitch_nocheck_get(port->devlink);
4218 struct mlx5_vport *vport = mlx5_devlink_port_vport_get(port);
4219
4220 return mlx5_eswitch_set_vport_mac(esw, vport->vport, hw_addr);
4221 }
4222
mlx5_devlink_port_fn_migratable_get(struct devlink_port * port,bool * is_enabled,struct netlink_ext_ack * extack)4223 int mlx5_devlink_port_fn_migratable_get(struct devlink_port *port, bool *is_enabled,
4224 struct netlink_ext_ack *extack)
4225 {
4226 struct mlx5_eswitch *esw = mlx5_devlink_eswitch_nocheck_get(port->devlink);
4227 struct mlx5_vport *vport = mlx5_devlink_port_vport_get(port);
4228
4229 if (!MLX5_CAP_GEN(esw->dev, migration)) {
4230 NL_SET_ERR_MSG_MOD(extack, "Device doesn't support migration");
4231 return -EOPNOTSUPP;
4232 }
4233
4234 if (!MLX5_CAP_GEN(esw->dev, vhca_resource_manager)) {
4235 NL_SET_ERR_MSG_MOD(extack, "Device doesn't support VHCA management");
4236 return -EOPNOTSUPP;
4237 }
4238
4239 mutex_lock(&esw->state_lock);
4240 *is_enabled = vport->info.mig_enabled;
4241 mutex_unlock(&esw->state_lock);
4242 return 0;
4243 }
4244
mlx5_devlink_port_fn_migratable_set(struct devlink_port * port,bool enable,struct netlink_ext_ack * extack)4245 int mlx5_devlink_port_fn_migratable_set(struct devlink_port *port, bool enable,
4246 struct netlink_ext_ack *extack)
4247 {
4248 struct mlx5_eswitch *esw = mlx5_devlink_eswitch_nocheck_get(port->devlink);
4249 struct mlx5_vport *vport = mlx5_devlink_port_vport_get(port);
4250 int query_out_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out);
4251 void *query_ctx;
4252 void *hca_caps;
4253 int err;
4254
4255 if (!MLX5_CAP_GEN(esw->dev, migration)) {
4256 NL_SET_ERR_MSG_MOD(extack, "Device doesn't support migration");
4257 return -EOPNOTSUPP;
4258 }
4259
4260 if (!MLX5_CAP_GEN(esw->dev, vhca_resource_manager)) {
4261 NL_SET_ERR_MSG_MOD(extack, "Device doesn't support VHCA management");
4262 return -EOPNOTSUPP;
4263 }
4264
4265 mutex_lock(&esw->state_lock);
4266
4267 if (vport->info.mig_enabled == enable) {
4268 err = 0;
4269 goto out;
4270 }
4271
4272 query_ctx = kzalloc(query_out_sz, GFP_KERNEL);
4273 if (!query_ctx) {
4274 err = -ENOMEM;
4275 goto out;
4276 }
4277
4278 err = mlx5_vport_get_other_func_cap(esw->dev, vport->vport, query_ctx,
4279 MLX5_CAP_GENERAL_2);
4280 if (err) {
4281 NL_SET_ERR_MSG_MOD(extack, "Failed getting HCA caps");
4282 goto out_free;
4283 }
4284
4285 hca_caps = MLX5_ADDR_OF(query_hca_cap_out, query_ctx, capability);
4286 MLX5_SET(cmd_hca_cap_2, hca_caps, migratable, enable);
4287
4288 err = mlx5_vport_set_other_func_cap(esw->dev, hca_caps, vport->vport,
4289 MLX5_SET_HCA_CAP_OP_MOD_GENERAL_DEVICE2);
4290 if (err) {
4291 NL_SET_ERR_MSG_MOD(extack, "Failed setting HCA migratable cap");
4292 goto out_free;
4293 }
4294
4295 vport->info.mig_enabled = enable;
4296
4297 out_free:
4298 kfree(query_ctx);
4299 out:
4300 mutex_unlock(&esw->state_lock);
4301 return err;
4302 }
4303
mlx5_devlink_port_fn_roce_get(struct devlink_port * port,bool * is_enabled,struct netlink_ext_ack * extack)4304 int mlx5_devlink_port_fn_roce_get(struct devlink_port *port, bool *is_enabled,
4305 struct netlink_ext_ack *extack)
4306 {
4307 struct mlx5_eswitch *esw = mlx5_devlink_eswitch_nocheck_get(port->devlink);
4308 struct mlx5_vport *vport = mlx5_devlink_port_vport_get(port);
4309
4310 if (!MLX5_CAP_GEN(esw->dev, vhca_resource_manager)) {
4311 NL_SET_ERR_MSG_MOD(extack, "Device doesn't support VHCA management");
4312 return -EOPNOTSUPP;
4313 }
4314
4315 mutex_lock(&esw->state_lock);
4316 *is_enabled = vport->info.roce_enabled;
4317 mutex_unlock(&esw->state_lock);
4318 return 0;
4319 }
4320
mlx5_devlink_port_fn_roce_set(struct devlink_port * port,bool enable,struct netlink_ext_ack * extack)4321 int mlx5_devlink_port_fn_roce_set(struct devlink_port *port, bool enable,
4322 struct netlink_ext_ack *extack)
4323 {
4324 struct mlx5_eswitch *esw = mlx5_devlink_eswitch_nocheck_get(port->devlink);
4325 struct mlx5_vport *vport = mlx5_devlink_port_vport_get(port);
4326 int query_out_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out);
4327 u16 vport_num = vport->vport;
4328 void *query_ctx;
4329 void *hca_caps;
4330 int err;
4331
4332 if (!MLX5_CAP_GEN(esw->dev, vhca_resource_manager)) {
4333 NL_SET_ERR_MSG_MOD(extack, "Device doesn't support VHCA management");
4334 return -EOPNOTSUPP;
4335 }
4336
4337 mutex_lock(&esw->state_lock);
4338
4339 if (vport->info.roce_enabled == enable) {
4340 err = 0;
4341 goto out;
4342 }
4343
4344 query_ctx = kzalloc(query_out_sz, GFP_KERNEL);
4345 if (!query_ctx) {
4346 err = -ENOMEM;
4347 goto out;
4348 }
4349
4350 err = mlx5_vport_get_other_func_cap(esw->dev, vport_num, query_ctx,
4351 MLX5_CAP_GENERAL);
4352 if (err) {
4353 NL_SET_ERR_MSG_MOD(extack, "Failed getting HCA caps");
4354 goto out_free;
4355 }
4356
4357 hca_caps = MLX5_ADDR_OF(query_hca_cap_out, query_ctx, capability);
4358 MLX5_SET(cmd_hca_cap, hca_caps, roce, enable);
4359
4360 err = mlx5_vport_set_other_func_cap(esw->dev, hca_caps, vport_num,
4361 MLX5_SET_HCA_CAP_OP_MOD_GENERAL_DEVICE);
4362 if (err) {
4363 NL_SET_ERR_MSG_MOD(extack, "Failed setting HCA roce cap");
4364 goto out_free;
4365 }
4366
4367 vport->info.roce_enabled = enable;
4368
4369 out_free:
4370 kfree(query_ctx);
4371 out:
4372 mutex_unlock(&esw->state_lock);
4373 return err;
4374 }
4375
4376 int
mlx5_eswitch_restore_ipsec_rule(struct mlx5_eswitch * esw,struct mlx5_flow_handle * rule,struct mlx5_esw_flow_attr * esw_attr,int attr_idx)4377 mlx5_eswitch_restore_ipsec_rule(struct mlx5_eswitch *esw, struct mlx5_flow_handle *rule,
4378 struct mlx5_esw_flow_attr *esw_attr, int attr_idx)
4379 {
4380 struct mlx5_flow_destination new_dest = {};
4381 struct mlx5_flow_destination old_dest = {};
4382
4383 if (!esw_setup_uplink_fwd_ipsec_needed(esw, esw_attr, attr_idx))
4384 return 0;
4385
4386 esw_setup_dest_fwd_ipsec(&old_dest, NULL, esw, esw_attr, attr_idx, 0, false);
4387 esw_setup_dest_fwd_vport(&new_dest, NULL, esw, esw_attr, attr_idx, 0, false);
4388
4389 return mlx5_modify_rule_destination(rule, &new_dest, &old_dest);
4390 }
4391
4392 #ifdef CONFIG_XFRM_OFFLOAD
mlx5_devlink_port_fn_ipsec_crypto_get(struct devlink_port * port,bool * is_enabled,struct netlink_ext_ack * extack)4393 int mlx5_devlink_port_fn_ipsec_crypto_get(struct devlink_port *port, bool *is_enabled,
4394 struct netlink_ext_ack *extack)
4395 {
4396 struct mlx5_eswitch *esw;
4397 struct mlx5_vport *vport;
4398 int err = 0;
4399
4400 esw = mlx5_devlink_eswitch_get(port->devlink);
4401 if (IS_ERR(esw))
4402 return PTR_ERR(esw);
4403
4404 if (!mlx5_esw_ipsec_vf_offload_supported(esw->dev)) {
4405 NL_SET_ERR_MSG_MOD(extack, "Device doesn't support IPSec crypto");
4406 return -EOPNOTSUPP;
4407 }
4408
4409 vport = mlx5_devlink_port_vport_get(port);
4410
4411 mutex_lock(&esw->state_lock);
4412 if (!vport->enabled) {
4413 err = -EOPNOTSUPP;
4414 goto unlock;
4415 }
4416
4417 *is_enabled = vport->info.ipsec_crypto_enabled;
4418 unlock:
4419 mutex_unlock(&esw->state_lock);
4420 return err;
4421 }
4422
mlx5_devlink_port_fn_ipsec_crypto_set(struct devlink_port * port,bool enable,struct netlink_ext_ack * extack)4423 int mlx5_devlink_port_fn_ipsec_crypto_set(struct devlink_port *port, bool enable,
4424 struct netlink_ext_ack *extack)
4425 {
4426 struct mlx5_eswitch *esw;
4427 struct mlx5_vport *vport;
4428 u16 vport_num;
4429 int err;
4430
4431 esw = mlx5_devlink_eswitch_get(port->devlink);
4432 if (IS_ERR(esw))
4433 return PTR_ERR(esw);
4434
4435 vport_num = mlx5_esw_devlink_port_index_to_vport_num(port->index);
4436 err = mlx5_esw_ipsec_vf_crypto_offload_supported(esw->dev, vport_num);
4437 if (err) {
4438 NL_SET_ERR_MSG_MOD(extack,
4439 "Device doesn't support IPsec crypto");
4440 return err;
4441 }
4442
4443 vport = mlx5_devlink_port_vport_get(port);
4444
4445 mutex_lock(&esw->state_lock);
4446 if (!vport->enabled) {
4447 err = -EOPNOTSUPP;
4448 NL_SET_ERR_MSG_MOD(extack, "Eswitch vport is disabled");
4449 goto unlock;
4450 }
4451
4452 if (vport->info.ipsec_crypto_enabled == enable)
4453 goto unlock;
4454
4455 if (!esw->enabled_ipsec_vf_count && esw->dev->num_ipsec_offloads) {
4456 err = -EBUSY;
4457 goto unlock;
4458 }
4459
4460 err = mlx5_esw_ipsec_vf_crypto_offload_set(esw, vport, enable);
4461 if (err) {
4462 NL_SET_ERR_MSG_MOD(extack, "Failed to set IPsec crypto");
4463 goto unlock;
4464 }
4465
4466 vport->info.ipsec_crypto_enabled = enable;
4467 if (enable)
4468 esw->enabled_ipsec_vf_count++;
4469 else
4470 esw->enabled_ipsec_vf_count--;
4471 unlock:
4472 mutex_unlock(&esw->state_lock);
4473 return err;
4474 }
4475
mlx5_devlink_port_fn_ipsec_packet_get(struct devlink_port * port,bool * is_enabled,struct netlink_ext_ack * extack)4476 int mlx5_devlink_port_fn_ipsec_packet_get(struct devlink_port *port, bool *is_enabled,
4477 struct netlink_ext_ack *extack)
4478 {
4479 struct mlx5_eswitch *esw;
4480 struct mlx5_vport *vport;
4481 int err = 0;
4482
4483 esw = mlx5_devlink_eswitch_get(port->devlink);
4484 if (IS_ERR(esw))
4485 return PTR_ERR(esw);
4486
4487 if (!mlx5_esw_ipsec_vf_offload_supported(esw->dev)) {
4488 NL_SET_ERR_MSG_MOD(extack, "Device doesn't support IPsec packet");
4489 return -EOPNOTSUPP;
4490 }
4491
4492 vport = mlx5_devlink_port_vport_get(port);
4493
4494 mutex_lock(&esw->state_lock);
4495 if (!vport->enabled) {
4496 err = -EOPNOTSUPP;
4497 goto unlock;
4498 }
4499
4500 *is_enabled = vport->info.ipsec_packet_enabled;
4501 unlock:
4502 mutex_unlock(&esw->state_lock);
4503 return err;
4504 }
4505
mlx5_devlink_port_fn_ipsec_packet_set(struct devlink_port * port,bool enable,struct netlink_ext_ack * extack)4506 int mlx5_devlink_port_fn_ipsec_packet_set(struct devlink_port *port,
4507 bool enable,
4508 struct netlink_ext_ack *extack)
4509 {
4510 struct mlx5_eswitch *esw;
4511 struct mlx5_vport *vport;
4512 u16 vport_num;
4513 int err;
4514
4515 esw = mlx5_devlink_eswitch_get(port->devlink);
4516 if (IS_ERR(esw))
4517 return PTR_ERR(esw);
4518
4519 vport_num = mlx5_esw_devlink_port_index_to_vport_num(port->index);
4520 err = mlx5_esw_ipsec_vf_packet_offload_supported(esw->dev, vport_num);
4521 if (err) {
4522 NL_SET_ERR_MSG_MOD(extack,
4523 "Device doesn't support IPsec packet mode");
4524 return err;
4525 }
4526
4527 vport = mlx5_devlink_port_vport_get(port);
4528 mutex_lock(&esw->state_lock);
4529 if (!vport->enabled) {
4530 err = -EOPNOTSUPP;
4531 NL_SET_ERR_MSG_MOD(extack, "Eswitch vport is disabled");
4532 goto unlock;
4533 }
4534
4535 if (vport->info.ipsec_packet_enabled == enable)
4536 goto unlock;
4537
4538 if (!esw->enabled_ipsec_vf_count && esw->dev->num_ipsec_offloads) {
4539 err = -EBUSY;
4540 goto unlock;
4541 }
4542
4543 err = mlx5_esw_ipsec_vf_packet_offload_set(esw, vport, enable);
4544 if (err) {
4545 NL_SET_ERR_MSG_MOD(extack,
4546 "Failed to set IPsec packet mode");
4547 goto unlock;
4548 }
4549
4550 vport->info.ipsec_packet_enabled = enable;
4551 if (enable)
4552 esw->enabled_ipsec_vf_count++;
4553 else
4554 esw->enabled_ipsec_vf_count--;
4555 unlock:
4556 mutex_unlock(&esw->state_lock);
4557 return err;
4558 }
4559 #endif /* CONFIG_XFRM_OFFLOAD */
4560