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1// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2/*
3 * Copyright (c) 2018, Mellanox Technologies inc. All rights reserved.
4 */
5
6#include <rdma/ib_user_verbs.h>
7#include <rdma/ib_verbs.h>
8#include <rdma/uverbs_types.h>
9#include <rdma/uverbs_ioctl.h>
10#include <rdma/uverbs_std_types.h>
11#include <rdma/mlx5_user_ioctl_cmds.h>
12#include <rdma/mlx5_user_ioctl_verbs.h>
13#include <rdma/ib_hdrs.h>
14#include <rdma/ib_umem.h>
15#include <linux/mlx5/driver.h>
16#include <linux/mlx5/fs.h>
17#include <linux/mlx5/fs_helpers.h>
18#include <linux/mlx5/eswitch.h>
19#include <net/inet_ecn.h>
20#include "mlx5_ib.h"
21#include "counters.h"
22#include "devx.h"
23#include "fs.h"
24
25#define UVERBS_MODULE_NAME mlx5_ib
26#include <rdma/uverbs_named_ioctl.h>
27
28enum {
29 MATCH_CRITERIA_ENABLE_OUTER_BIT,
30 MATCH_CRITERIA_ENABLE_MISC_BIT,
31 MATCH_CRITERIA_ENABLE_INNER_BIT,
32 MATCH_CRITERIA_ENABLE_MISC2_BIT
33};
34
35#define HEADER_IS_ZERO(match_criteria, headers) \
36 !(memchr_inv(MLX5_ADDR_OF(fte_match_param, match_criteria, headers), \
37 0, MLX5_FLD_SZ_BYTES(fte_match_param, headers))) \
38
39static u8 get_match_criteria_enable(u32 *match_criteria)
40{
41 u8 match_criteria_enable;
42
43 match_criteria_enable =
44 (!HEADER_IS_ZERO(match_criteria, outer_headers)) <<
45 MATCH_CRITERIA_ENABLE_OUTER_BIT;
46 match_criteria_enable |=
47 (!HEADER_IS_ZERO(match_criteria, misc_parameters)) <<
48 MATCH_CRITERIA_ENABLE_MISC_BIT;
49 match_criteria_enable |=
50 (!HEADER_IS_ZERO(match_criteria, inner_headers)) <<
51 MATCH_CRITERIA_ENABLE_INNER_BIT;
52 match_criteria_enable |=
53 (!HEADER_IS_ZERO(match_criteria, misc_parameters_2)) <<
54 MATCH_CRITERIA_ENABLE_MISC2_BIT;
55
56 return match_criteria_enable;
57}
58
59static int set_proto(void *outer_c, void *outer_v, u8 mask, u8 val)
60{
61 u8 entry_mask;
62 u8 entry_val;
63 int err = 0;
64
65 if (!mask)
66 goto out;
67
68 entry_mask = MLX5_GET(fte_match_set_lyr_2_4, outer_c,
69 ip_protocol);
70 entry_val = MLX5_GET(fte_match_set_lyr_2_4, outer_v,
71 ip_protocol);
72 if (!entry_mask) {
73 MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_protocol, mask);
74 MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_protocol, val);
75 goto out;
76 }
77 /* Don't override existing ip protocol */
78 if (mask != entry_mask || val != entry_val)
79 err = -EINVAL;
80out:
81 return err;
82}
83
84static void set_flow_label(void *misc_c, void *misc_v, u32 mask, u32 val,
85 bool inner)
86{
87 if (inner) {
88 MLX5_SET(fte_match_set_misc,
89 misc_c, inner_ipv6_flow_label, mask);
90 MLX5_SET(fte_match_set_misc,
91 misc_v, inner_ipv6_flow_label, val);
92 } else {
93 MLX5_SET(fte_match_set_misc,
94 misc_c, outer_ipv6_flow_label, mask);
95 MLX5_SET(fte_match_set_misc,
96 misc_v, outer_ipv6_flow_label, val);
97 }
98}
99
100static void set_tos(void *outer_c, void *outer_v, u8 mask, u8 val)
101{
102 MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_ecn, mask);
103 MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_ecn, val);
104 MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_dscp, mask >> 2);
105 MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_dscp, val >> 2);
106}
107
108static int check_mpls_supp_fields(u32 field_support, const __be32 *set_mask)
109{
110 if (MLX5_GET(fte_match_mpls, set_mask, mpls_label) &&
111 !(field_support & MLX5_FIELD_SUPPORT_MPLS_LABEL))
112 return -EOPNOTSUPP;
113
114 if (MLX5_GET(fte_match_mpls, set_mask, mpls_exp) &&
115 !(field_support & MLX5_FIELD_SUPPORT_MPLS_EXP))
116 return -EOPNOTSUPP;
117
118 if (MLX5_GET(fte_match_mpls, set_mask, mpls_s_bos) &&
119 !(field_support & MLX5_FIELD_SUPPORT_MPLS_S_BOS))
120 return -EOPNOTSUPP;
121
122 if (MLX5_GET(fte_match_mpls, set_mask, mpls_ttl) &&
123 !(field_support & MLX5_FIELD_SUPPORT_MPLS_TTL))
124 return -EOPNOTSUPP;
125
126 return 0;
127}
128
129#define LAST_ETH_FIELD vlan_tag
130#define LAST_IPV4_FIELD tos
131#define LAST_IPV6_FIELD traffic_class
132#define LAST_TCP_UDP_FIELD src_port
133#define LAST_TUNNEL_FIELD tunnel_id
134#define LAST_FLOW_TAG_FIELD tag_id
135#define LAST_DROP_FIELD size
136#define LAST_COUNTERS_FIELD counters
137
138/* Field is the last supported field */
139#define FIELDS_NOT_SUPPORTED(filter, field) \
140 memchr_inv((void *)&filter.field + sizeof(filter.field), 0, \
141 sizeof(filter) - offsetofend(typeof(filter), field))
142
143int parse_flow_flow_action(struct mlx5_ib_flow_action *maction,
144 bool is_egress,
145 struct mlx5_flow_act *action)
146{
147
148 switch (maction->ib_action.type) {
149 case IB_FLOW_ACTION_UNSPECIFIED:
150 if (maction->flow_action_raw.sub_type ==
151 MLX5_IB_FLOW_ACTION_MODIFY_HEADER) {
152 if (action->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
153 return -EINVAL;
154 action->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
155 action->modify_hdr =
156 maction->flow_action_raw.modify_hdr;
157 return 0;
158 }
159 if (maction->flow_action_raw.sub_type ==
160 MLX5_IB_FLOW_ACTION_DECAP) {
161 if (action->action & MLX5_FLOW_CONTEXT_ACTION_DECAP)
162 return -EINVAL;
163 action->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
164 return 0;
165 }
166 if (maction->flow_action_raw.sub_type ==
167 MLX5_IB_FLOW_ACTION_PACKET_REFORMAT) {
168 if (action->action &
169 MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT)
170 return -EINVAL;
171 action->action |=
172 MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT;
173 action->pkt_reformat =
174 maction->flow_action_raw.pkt_reformat;
175 return 0;
176 }
177 fallthrough;
178 default:
179 return -EOPNOTSUPP;
180 }
181}
182
183static int parse_flow_attr(struct mlx5_core_dev *mdev,
184 struct mlx5_flow_spec *spec,
185 const union ib_flow_spec *ib_spec,
186 const struct ib_flow_attr *flow_attr,
187 struct mlx5_flow_act *action, u32 prev_type)
188{
189 struct mlx5_flow_context *flow_context = &spec->flow_context;
190 u32 *match_c = spec->match_criteria;
191 u32 *match_v = spec->match_value;
192 void *misc_params_c = MLX5_ADDR_OF(fte_match_param, match_c,
193 misc_parameters);
194 void *misc_params_v = MLX5_ADDR_OF(fte_match_param, match_v,
195 misc_parameters);
196 void *misc_params2_c = MLX5_ADDR_OF(fte_match_param, match_c,
197 misc_parameters_2);
198 void *misc_params2_v = MLX5_ADDR_OF(fte_match_param, match_v,
199 misc_parameters_2);
200 void *headers_c;
201 void *headers_v;
202 int match_ipv;
203 int ret;
204
205 if (ib_spec->type & IB_FLOW_SPEC_INNER) {
206 headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
207 inner_headers);
208 headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
209 inner_headers);
210 match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
211 ft_field_support.inner_ip_version);
212 } else {
213 headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
214 outer_headers);
215 headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
216 outer_headers);
217 match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
218 ft_field_support.outer_ip_version);
219 }
220
221 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
222 case IB_FLOW_SPEC_ETH:
223 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
224 return -EOPNOTSUPP;
225
226 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
227 dmac_47_16),
228 ib_spec->eth.mask.dst_mac);
229 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
230 dmac_47_16),
231 ib_spec->eth.val.dst_mac);
232
233 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
234 smac_47_16),
235 ib_spec->eth.mask.src_mac);
236 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
237 smac_47_16),
238 ib_spec->eth.val.src_mac);
239
240 if (ib_spec->eth.mask.vlan_tag) {
241 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
242 cvlan_tag, 1);
243 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
244 cvlan_tag, 1);
245
246 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
247 first_vid, ntohs(ib_spec->eth.mask.vlan_tag));
248 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
249 first_vid, ntohs(ib_spec->eth.val.vlan_tag));
250
251 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
252 first_cfi,
253 ntohs(ib_spec->eth.mask.vlan_tag) >> 12);
254 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
255 first_cfi,
256 ntohs(ib_spec->eth.val.vlan_tag) >> 12);
257
258 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
259 first_prio,
260 ntohs(ib_spec->eth.mask.vlan_tag) >> 13);
261 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
262 first_prio,
263 ntohs(ib_spec->eth.val.vlan_tag) >> 13);
264 }
265 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
266 ethertype, ntohs(ib_spec->eth.mask.ether_type));
267 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
268 ethertype, ntohs(ib_spec->eth.val.ether_type));
269 break;
270 case IB_FLOW_SPEC_IPV4:
271 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
272 return -EOPNOTSUPP;
273
274 if (match_ipv) {
275 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
276 ip_version, 0xf);
277 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
278 ip_version, MLX5_FS_IPV4_VERSION);
279 } else {
280 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
281 ethertype, 0xffff);
282 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
283 ethertype, ETH_P_IP);
284 }
285
286 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
287 src_ipv4_src_ipv6.ipv4_layout.ipv4),
288 &ib_spec->ipv4.mask.src_ip,
289 sizeof(ib_spec->ipv4.mask.src_ip));
290 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
291 src_ipv4_src_ipv6.ipv4_layout.ipv4),
292 &ib_spec->ipv4.val.src_ip,
293 sizeof(ib_spec->ipv4.val.src_ip));
294 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
295 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
296 &ib_spec->ipv4.mask.dst_ip,
297 sizeof(ib_spec->ipv4.mask.dst_ip));
298 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
299 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
300 &ib_spec->ipv4.val.dst_ip,
301 sizeof(ib_spec->ipv4.val.dst_ip));
302
303 set_tos(headers_c, headers_v,
304 ib_spec->ipv4.mask.tos, ib_spec->ipv4.val.tos);
305
306 if (set_proto(headers_c, headers_v,
307 ib_spec->ipv4.mask.proto,
308 ib_spec->ipv4.val.proto))
309 return -EINVAL;
310 break;
311 case IB_FLOW_SPEC_IPV6:
312 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv6.mask, LAST_IPV6_FIELD))
313 return -EOPNOTSUPP;
314
315 if (match_ipv) {
316 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
317 ip_version, 0xf);
318 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
319 ip_version, MLX5_FS_IPV6_VERSION);
320 } else {
321 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
322 ethertype, 0xffff);
323 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
324 ethertype, ETH_P_IPV6);
325 }
326
327 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
328 src_ipv4_src_ipv6.ipv6_layout.ipv6),
329 &ib_spec->ipv6.mask.src_ip,
330 sizeof(ib_spec->ipv6.mask.src_ip));
331 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
332 src_ipv4_src_ipv6.ipv6_layout.ipv6),
333 &ib_spec->ipv6.val.src_ip,
334 sizeof(ib_spec->ipv6.val.src_ip));
335 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
336 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
337 &ib_spec->ipv6.mask.dst_ip,
338 sizeof(ib_spec->ipv6.mask.dst_ip));
339 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
340 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
341 &ib_spec->ipv6.val.dst_ip,
342 sizeof(ib_spec->ipv6.val.dst_ip));
343
344 set_tos(headers_c, headers_v,
345 ib_spec->ipv6.mask.traffic_class,
346 ib_spec->ipv6.val.traffic_class);
347
348 if (set_proto(headers_c, headers_v,
349 ib_spec->ipv6.mask.next_hdr,
350 ib_spec->ipv6.val.next_hdr))
351 return -EINVAL;
352
353 set_flow_label(misc_params_c, misc_params_v,
354 ntohl(ib_spec->ipv6.mask.flow_label),
355 ntohl(ib_spec->ipv6.val.flow_label),
356 ib_spec->type & IB_FLOW_SPEC_INNER);
357 break;
358 case IB_FLOW_SPEC_ESP:
359 return -EOPNOTSUPP;
360 case IB_FLOW_SPEC_TCP:
361 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask,
362 LAST_TCP_UDP_FIELD))
363 return -EOPNOTSUPP;
364
365 if (set_proto(headers_c, headers_v, 0xff, IPPROTO_TCP))
366 return -EINVAL;
367
368 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_sport,
369 ntohs(ib_spec->tcp_udp.mask.src_port));
370 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_sport,
371 ntohs(ib_spec->tcp_udp.val.src_port));
372
373 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_dport,
374 ntohs(ib_spec->tcp_udp.mask.dst_port));
375 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_dport,
376 ntohs(ib_spec->tcp_udp.val.dst_port));
377 break;
378 case IB_FLOW_SPEC_UDP:
379 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask,
380 LAST_TCP_UDP_FIELD))
381 return -EOPNOTSUPP;
382
383 if (set_proto(headers_c, headers_v, 0xff, IPPROTO_UDP))
384 return -EINVAL;
385
386 MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_sport,
387 ntohs(ib_spec->tcp_udp.mask.src_port));
388 MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_sport,
389 ntohs(ib_spec->tcp_udp.val.src_port));
390
391 MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_dport,
392 ntohs(ib_spec->tcp_udp.mask.dst_port));
393 MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport,
394 ntohs(ib_spec->tcp_udp.val.dst_port));
395 break;
396 case IB_FLOW_SPEC_GRE:
397 if (ib_spec->gre.mask.c_ks_res0_ver)
398 return -EOPNOTSUPP;
399
400 if (set_proto(headers_c, headers_v, 0xff, IPPROTO_GRE))
401 return -EINVAL;
402
403 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
404 0xff);
405 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
406 IPPROTO_GRE);
407
408 MLX5_SET(fte_match_set_misc, misc_params_c, gre_protocol,
409 ntohs(ib_spec->gre.mask.protocol));
410 MLX5_SET(fte_match_set_misc, misc_params_v, gre_protocol,
411 ntohs(ib_spec->gre.val.protocol));
412
413 memcpy(MLX5_ADDR_OF(fte_match_set_misc, misc_params_c,
414 gre_key.nvgre.hi),
415 &ib_spec->gre.mask.key,
416 sizeof(ib_spec->gre.mask.key));
417 memcpy(MLX5_ADDR_OF(fte_match_set_misc, misc_params_v,
418 gre_key.nvgre.hi),
419 &ib_spec->gre.val.key,
420 sizeof(ib_spec->gre.val.key));
421 break;
422 case IB_FLOW_SPEC_MPLS:
423 switch (prev_type) {
424 case IB_FLOW_SPEC_UDP:
425 if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
426 ft_field_support.outer_first_mpls_over_udp),
427 &ib_spec->mpls.mask.tag))
428 return -EOPNOTSUPP;
429
430 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
431 outer_first_mpls_over_udp),
432 &ib_spec->mpls.val.tag,
433 sizeof(ib_spec->mpls.val.tag));
434 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
435 outer_first_mpls_over_udp),
436 &ib_spec->mpls.mask.tag,
437 sizeof(ib_spec->mpls.mask.tag));
438 break;
439 case IB_FLOW_SPEC_GRE:
440 if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
441 ft_field_support.outer_first_mpls_over_gre),
442 &ib_spec->mpls.mask.tag))
443 return -EOPNOTSUPP;
444
445 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
446 outer_first_mpls_over_gre),
447 &ib_spec->mpls.val.tag,
448 sizeof(ib_spec->mpls.val.tag));
449 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
450 outer_first_mpls_over_gre),
451 &ib_spec->mpls.mask.tag,
452 sizeof(ib_spec->mpls.mask.tag));
453 break;
454 default:
455 if (ib_spec->type & IB_FLOW_SPEC_INNER) {
456 if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
457 ft_field_support.inner_first_mpls),
458 &ib_spec->mpls.mask.tag))
459 return -EOPNOTSUPP;
460
461 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
462 inner_first_mpls),
463 &ib_spec->mpls.val.tag,
464 sizeof(ib_spec->mpls.val.tag));
465 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
466 inner_first_mpls),
467 &ib_spec->mpls.mask.tag,
468 sizeof(ib_spec->mpls.mask.tag));
469 } else {
470 if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
471 ft_field_support.outer_first_mpls),
472 &ib_spec->mpls.mask.tag))
473 return -EOPNOTSUPP;
474
475 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
476 outer_first_mpls),
477 &ib_spec->mpls.val.tag,
478 sizeof(ib_spec->mpls.val.tag));
479 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
480 outer_first_mpls),
481 &ib_spec->mpls.mask.tag,
482 sizeof(ib_spec->mpls.mask.tag));
483 }
484 }
485 break;
486 case IB_FLOW_SPEC_VXLAN_TUNNEL:
487 if (FIELDS_NOT_SUPPORTED(ib_spec->tunnel.mask,
488 LAST_TUNNEL_FIELD))
489 return -EOPNOTSUPP;
490
491 MLX5_SET(fte_match_set_misc, misc_params_c, vxlan_vni,
492 ntohl(ib_spec->tunnel.mask.tunnel_id));
493 MLX5_SET(fte_match_set_misc, misc_params_v, vxlan_vni,
494 ntohl(ib_spec->tunnel.val.tunnel_id));
495 break;
496 case IB_FLOW_SPEC_ACTION_TAG:
497 if (FIELDS_NOT_SUPPORTED(ib_spec->flow_tag,
498 LAST_FLOW_TAG_FIELD))
499 return -EOPNOTSUPP;
500 if (ib_spec->flow_tag.tag_id >= BIT(24))
501 return -EINVAL;
502
503 flow_context->flow_tag = ib_spec->flow_tag.tag_id;
504 flow_context->flags |= FLOW_CONTEXT_HAS_TAG;
505 break;
506 case IB_FLOW_SPEC_ACTION_DROP:
507 if (FIELDS_NOT_SUPPORTED(ib_spec->drop,
508 LAST_DROP_FIELD))
509 return -EOPNOTSUPP;
510 action->action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
511 break;
512 case IB_FLOW_SPEC_ACTION_HANDLE:
513 ret = parse_flow_flow_action(to_mflow_act(ib_spec->action.act),
514 flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS, action);
515 if (ret)
516 return ret;
517 break;
518 case IB_FLOW_SPEC_ACTION_COUNT:
519 if (FIELDS_NOT_SUPPORTED(ib_spec->flow_count,
520 LAST_COUNTERS_FIELD))
521 return -EOPNOTSUPP;
522
523 /* for now support only one counters spec per flow */
524 if (action->action & MLX5_FLOW_CONTEXT_ACTION_COUNT)
525 return -EINVAL;
526
527 action->counters = ib_spec->flow_count.counters;
528 action->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
529 break;
530 default:
531 return -EINVAL;
532 }
533
534 return 0;
535}
536
537/* If a flow could catch both multicast and unicast packets,
538 * it won't fall into the multicast flow steering table and this rule
539 * could steal other multicast packets.
540 */
541static bool flow_is_multicast_only(const struct ib_flow_attr *ib_attr)
542{
543 union ib_flow_spec *flow_spec;
544
545 if (ib_attr->type != IB_FLOW_ATTR_NORMAL ||
546 ib_attr->num_of_specs < 1)
547 return false;
548
549 flow_spec = (union ib_flow_spec *)(ib_attr + 1);
550 if (flow_spec->type == IB_FLOW_SPEC_IPV4) {
551 struct ib_flow_spec_ipv4 *ipv4_spec;
552
553 ipv4_spec = (struct ib_flow_spec_ipv4 *)flow_spec;
554 if (ipv4_is_multicast(ipv4_spec->val.dst_ip))
555 return true;
556
557 return false;
558 }
559
560 if (flow_spec->type == IB_FLOW_SPEC_ETH) {
561 struct ib_flow_spec_eth *eth_spec;
562
563 eth_spec = (struct ib_flow_spec_eth *)flow_spec;
564 return is_multicast_ether_addr(eth_spec->mask.dst_mac) &&
565 is_multicast_ether_addr(eth_spec->val.dst_mac);
566 }
567
568 return false;
569}
570
571static bool is_valid_ethertype(struct mlx5_core_dev *mdev,
572 const struct ib_flow_attr *flow_attr,
573 bool check_inner)
574{
575 union ib_flow_spec *ib_spec = (union ib_flow_spec *)(flow_attr + 1);
576 int match_ipv = check_inner ?
577 MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
578 ft_field_support.inner_ip_version) :
579 MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
580 ft_field_support.outer_ip_version);
581 int inner_bit = check_inner ? IB_FLOW_SPEC_INNER : 0;
582 bool ipv4_spec_valid, ipv6_spec_valid;
583 unsigned int ip_spec_type = 0;
584 bool has_ethertype = false;
585 unsigned int spec_index;
586 bool mask_valid = true;
587 u16 eth_type = 0;
588 bool type_valid;
589
590 /* Validate that ethertype is correct */
591 for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
592 if ((ib_spec->type == (IB_FLOW_SPEC_ETH | inner_bit)) &&
593 ib_spec->eth.mask.ether_type) {
594 mask_valid = (ib_spec->eth.mask.ether_type ==
595 htons(0xffff));
596 has_ethertype = true;
597 eth_type = ntohs(ib_spec->eth.val.ether_type);
598 } else if ((ib_spec->type == (IB_FLOW_SPEC_IPV4 | inner_bit)) ||
599 (ib_spec->type == (IB_FLOW_SPEC_IPV6 | inner_bit))) {
600 ip_spec_type = ib_spec->type;
601 }
602 ib_spec = (void *)ib_spec + ib_spec->size;
603 }
604
605 type_valid = (!has_ethertype) || (!ip_spec_type);
606 if (!type_valid && mask_valid) {
607 ipv4_spec_valid = (eth_type == ETH_P_IP) &&
608 (ip_spec_type == (IB_FLOW_SPEC_IPV4 | inner_bit));
609 ipv6_spec_valid = (eth_type == ETH_P_IPV6) &&
610 (ip_spec_type == (IB_FLOW_SPEC_IPV6 | inner_bit));
611
612 type_valid = (ipv4_spec_valid) || (ipv6_spec_valid) ||
613 (((eth_type == ETH_P_MPLS_UC) ||
614 (eth_type == ETH_P_MPLS_MC)) && match_ipv);
615 }
616
617 return type_valid;
618}
619
620static bool is_valid_attr(struct mlx5_core_dev *mdev,
621 const struct ib_flow_attr *flow_attr)
622{
623 return is_valid_ethertype(mdev, flow_attr, false) &&
624 is_valid_ethertype(mdev, flow_attr, true);
625}
626
627static void put_flow_table(struct mlx5_ib_dev *dev,
628 struct mlx5_ib_flow_prio *prio, bool ft_added)
629{
630 prio->refcount -= !!ft_added;
631 if (!prio->refcount) {
632 mlx5_destroy_flow_table(prio->flow_table);
633 prio->flow_table = NULL;
634 }
635}
636
637static int mlx5_ib_destroy_flow(struct ib_flow *flow_id)
638{
639 struct mlx5_ib_flow_handler *handler = container_of(flow_id,
640 struct mlx5_ib_flow_handler,
641 ibflow);
642 struct mlx5_ib_flow_handler *iter, *tmp;
643 struct mlx5_ib_dev *dev = handler->dev;
644
645 mutex_lock(&dev->flow_db->lock);
646
647 list_for_each_entry_safe(iter, tmp, &handler->list, list) {
648 mlx5_del_flow_rules(iter->rule);
649 put_flow_table(dev, iter->prio, true);
650 list_del(&iter->list);
651 kfree(iter);
652 }
653
654 mlx5_del_flow_rules(handler->rule);
655 put_flow_table(dev, handler->prio, true);
656 mlx5_ib_counters_clear_description(handler->ibcounters);
657 mutex_unlock(&dev->flow_db->lock);
658 if (handler->flow_matcher)
659 atomic_dec(&handler->flow_matcher->usecnt);
660 kfree(handler);
661
662 return 0;
663}
664
665static int ib_prio_to_core_prio(unsigned int priority, bool dont_trap)
666{
667 priority *= 2;
668 if (!dont_trap)
669 priority++;
670 return priority;
671}
672
673enum flow_table_type {
674 MLX5_IB_FT_RX,
675 MLX5_IB_FT_TX
676};
677
678#define MLX5_FS_MAX_TYPES 6
679#define MLX5_FS_MAX_ENTRIES BIT(16)
680
681static bool mlx5_ib_shared_ft_allowed(struct ib_device *device)
682{
683 struct mlx5_ib_dev *dev = to_mdev(device);
684
685 return MLX5_CAP_GEN(dev->mdev, shared_object_to_user_object_allowed);
686}
687
688static struct mlx5_ib_flow_prio *_get_prio(struct mlx5_ib_dev *dev,
689 struct mlx5_flow_namespace *ns,
690 struct mlx5_ib_flow_prio *prio,
691 int priority,
692 int num_entries, int num_groups,
693 u32 flags)
694{
695 struct mlx5_flow_table_attr ft_attr = {};
696 struct mlx5_flow_table *ft;
697
698 ft_attr.prio = priority;
699 ft_attr.max_fte = num_entries;
700 ft_attr.flags = flags;
701 ft_attr.autogroup.max_num_groups = num_groups;
702 ft = mlx5_create_auto_grouped_flow_table(ns, &ft_attr);
703 if (IS_ERR(ft))
704 return ERR_CAST(ft);
705
706 prio->flow_table = ft;
707 prio->refcount = 0;
708 return prio;
709}
710
711static struct mlx5_ib_flow_prio *get_flow_table(struct mlx5_ib_dev *dev,
712 struct ib_flow_attr *flow_attr,
713 enum flow_table_type ft_type)
714{
715 bool dont_trap = flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP;
716 struct mlx5_flow_namespace *ns = NULL;
717 enum mlx5_flow_namespace_type fn_type;
718 struct mlx5_ib_flow_prio *prio;
719 struct mlx5_flow_table *ft;
720 int max_table_size;
721 int num_entries;
722 int num_groups;
723 bool esw_encap;
724 u32 flags = 0;
725 int priority;
726
727 max_table_size = BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
728 log_max_ft_size));
729 esw_encap = mlx5_eswitch_get_encap_mode(dev->mdev) !=
730 DEVLINK_ESWITCH_ENCAP_MODE_NONE;
731 switch (flow_attr->type) {
732 case IB_FLOW_ATTR_NORMAL:
733 if (flow_is_multicast_only(flow_attr) && !dont_trap)
734 priority = MLX5_IB_FLOW_MCAST_PRIO;
735 else
736 priority = ib_prio_to_core_prio(flow_attr->priority,
737 dont_trap);
738 if (ft_type == MLX5_IB_FT_RX) {
739 fn_type = MLX5_FLOW_NAMESPACE_BYPASS;
740 prio = &dev->flow_db->prios[priority];
741 if (!dev->is_rep && !esw_encap &&
742 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, decap))
743 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_DECAP;
744 if (!dev->is_rep && !esw_encap &&
745 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
746 reformat_l3_tunnel_to_l2))
747 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
748 } else {
749 max_table_size = BIT(MLX5_CAP_FLOWTABLE_NIC_TX(
750 dev->mdev, log_max_ft_size));
751 fn_type = MLX5_FLOW_NAMESPACE_EGRESS;
752 prio = &dev->flow_db->egress_prios[priority];
753 if (!dev->is_rep && !esw_encap &&
754 MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, reformat))
755 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
756 }
757 ns = mlx5_get_flow_namespace(dev->mdev, fn_type);
758 num_entries = MLX5_FS_MAX_ENTRIES;
759 num_groups = MLX5_FS_MAX_TYPES;
760 break;
761 case IB_FLOW_ATTR_ALL_DEFAULT:
762 case IB_FLOW_ATTR_MC_DEFAULT:
763 ns = mlx5_get_flow_namespace(dev->mdev,
764 MLX5_FLOW_NAMESPACE_LEFTOVERS);
765 build_leftovers_ft_param(&priority, &num_entries, &num_groups);
766 prio = &dev->flow_db->prios[MLX5_IB_FLOW_LEFTOVERS_PRIO];
767 break;
768 case IB_FLOW_ATTR_SNIFFER:
769 if (!MLX5_CAP_FLOWTABLE(dev->mdev,
770 allow_sniffer_and_nic_rx_shared_tir))
771 return ERR_PTR(-EOPNOTSUPP);
772
773 ns = mlx5_get_flow_namespace(
774 dev->mdev, ft_type == MLX5_IB_FT_RX ?
775 MLX5_FLOW_NAMESPACE_SNIFFER_RX :
776 MLX5_FLOW_NAMESPACE_SNIFFER_TX);
777
778 prio = &dev->flow_db->sniffer[ft_type];
779 priority = 0;
780 num_entries = 1;
781 num_groups = 1;
782 break;
783 default:
784 break;
785 }
786
787 if (!ns)
788 return ERR_PTR(-EOPNOTSUPP);
789
790 max_table_size = min_t(int, num_entries, max_table_size);
791
792 ft = prio->flow_table;
793 if (!ft)
794 return _get_prio(dev, ns, prio, priority, max_table_size,
795 num_groups, flags);
796
797 return prio;
798}
799
800enum {
801 RDMA_RX_ECN_OPCOUNTER_PRIO,
802 RDMA_RX_CNP_OPCOUNTER_PRIO,
803};
804
805enum {
806 RDMA_TX_CNP_OPCOUNTER_PRIO,
807};
808
809static int set_vhca_port_spec(struct mlx5_ib_dev *dev, u32 port_num,
810 struct mlx5_flow_spec *spec)
811{
812 if (!MLX5_CAP_FLOWTABLE_RDMA_RX(dev->mdev,
813 ft_field_support.source_vhca_port) ||
814 !MLX5_CAP_FLOWTABLE_RDMA_TX(dev->mdev,
815 ft_field_support.source_vhca_port))
816 return -EOPNOTSUPP;
817
818 MLX5_SET_TO_ONES(fte_match_param, &spec->match_criteria,
819 misc_parameters.source_vhca_port);
820 MLX5_SET(fte_match_param, &spec->match_value,
821 misc_parameters.source_vhca_port, port_num);
822
823 return 0;
824}
825
826static int set_ecn_ce_spec(struct mlx5_ib_dev *dev, u32 port_num,
827 struct mlx5_flow_spec *spec, int ipv)
828{
829 if (!MLX5_CAP_FLOWTABLE_RDMA_RX(dev->mdev,
830 ft_field_support.outer_ip_version))
831 return -EOPNOTSUPP;
832
833 if (mlx5_core_mp_enabled(dev->mdev) &&
834 set_vhca_port_spec(dev, port_num, spec))
835 return -EOPNOTSUPP;
836
837 MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
838 outer_headers.ip_ecn);
839 MLX5_SET(fte_match_param, spec->match_value, outer_headers.ip_ecn,
840 INET_ECN_CE);
841 MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
842 outer_headers.ip_version);
843 MLX5_SET(fte_match_param, spec->match_value, outer_headers.ip_version,
844 ipv);
845
846 spec->match_criteria_enable =
847 get_match_criteria_enable(spec->match_criteria);
848
849 return 0;
850}
851
852static int set_cnp_spec(struct mlx5_ib_dev *dev, u32 port_num,
853 struct mlx5_flow_spec *spec)
854{
855 if (mlx5_core_mp_enabled(dev->mdev) &&
856 set_vhca_port_spec(dev, port_num, spec))
857 return -EOPNOTSUPP;
858
859 MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
860 misc_parameters.bth_opcode);
861 MLX5_SET(fte_match_param, spec->match_value, misc_parameters.bth_opcode,
862 IB_BTH_OPCODE_CNP);
863
864 spec->match_criteria_enable =
865 get_match_criteria_enable(spec->match_criteria);
866
867 return 0;
868}
869
870int mlx5_ib_fs_add_op_fc(struct mlx5_ib_dev *dev, u32 port_num,
871 struct mlx5_ib_op_fc *opfc,
872 enum mlx5_ib_optional_counter_type type)
873{
874 enum mlx5_flow_namespace_type fn_type;
875 int priority, i, err, spec_num;
876 struct mlx5_flow_act flow_act = {};
877 struct mlx5_flow_destination dst;
878 struct mlx5_flow_namespace *ns;
879 struct mlx5_ib_flow_prio *prio;
880 struct mlx5_flow_spec *spec;
881
882 spec = kcalloc(MAX_OPFC_RULES, sizeof(*spec), GFP_KERNEL);
883 if (!spec)
884 return -ENOMEM;
885
886 switch (type) {
887 case MLX5_IB_OPCOUNTER_CC_RX_CE_PKTS:
888 if (set_ecn_ce_spec(dev, port_num, &spec[0],
889 MLX5_FS_IPV4_VERSION) ||
890 set_ecn_ce_spec(dev, port_num, &spec[1],
891 MLX5_FS_IPV6_VERSION)) {
892 err = -EOPNOTSUPP;
893 goto free;
894 }
895 spec_num = 2;
896 fn_type = MLX5_FLOW_NAMESPACE_RDMA_RX_COUNTERS;
897 priority = RDMA_RX_ECN_OPCOUNTER_PRIO;
898 break;
899
900 case MLX5_IB_OPCOUNTER_CC_RX_CNP_PKTS:
901 if (!MLX5_CAP_FLOWTABLE(dev->mdev,
902 ft_field_support_2_nic_receive_rdma.bth_opcode) ||
903 set_cnp_spec(dev, port_num, &spec[0])) {
904 err = -EOPNOTSUPP;
905 goto free;
906 }
907 spec_num = 1;
908 fn_type = MLX5_FLOW_NAMESPACE_RDMA_RX_COUNTERS;
909 priority = RDMA_RX_CNP_OPCOUNTER_PRIO;
910 break;
911
912 case MLX5_IB_OPCOUNTER_CC_TX_CNP_PKTS:
913 if (!MLX5_CAP_FLOWTABLE(dev->mdev,
914 ft_field_support_2_nic_transmit_rdma.bth_opcode) ||
915 set_cnp_spec(dev, port_num, &spec[0])) {
916 err = -EOPNOTSUPP;
917 goto free;
918 }
919 spec_num = 1;
920 fn_type = MLX5_FLOW_NAMESPACE_RDMA_TX_COUNTERS;
921 priority = RDMA_TX_CNP_OPCOUNTER_PRIO;
922 break;
923
924 default:
925 err = -EOPNOTSUPP;
926 goto free;
927 }
928
929 ns = mlx5_get_flow_namespace(dev->mdev, fn_type);
930 if (!ns) {
931 err = -EOPNOTSUPP;
932 goto free;
933 }
934
935 prio = &dev->flow_db->opfcs[type];
936 if (!prio->flow_table) {
937 prio = _get_prio(dev, ns, prio, priority,
938 dev->num_ports * MAX_OPFC_RULES, 1, 0);
939 if (IS_ERR(prio)) {
940 err = PTR_ERR(prio);
941 goto free;
942 }
943 }
944
945 dst.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
946 dst.counter_id = mlx5_fc_id(opfc->fc);
947
948 flow_act.action =
949 MLX5_FLOW_CONTEXT_ACTION_COUNT | MLX5_FLOW_CONTEXT_ACTION_ALLOW;
950
951 for (i = 0; i < spec_num; i++) {
952 opfc->rule[i] = mlx5_add_flow_rules(prio->flow_table, &spec[i],
953 &flow_act, &dst, 1);
954 if (IS_ERR(opfc->rule[i])) {
955 err = PTR_ERR(opfc->rule[i]);
956 goto del_rules;
957 }
958 }
959 prio->refcount += spec_num;
960 kfree(spec);
961
962 return 0;
963
964del_rules:
965 for (i -= 1; i >= 0; i--)
966 mlx5_del_flow_rules(opfc->rule[i]);
967 put_flow_table(dev, prio, false);
968free:
969 kfree(spec);
970 return err;
971}
972
973void mlx5_ib_fs_remove_op_fc(struct mlx5_ib_dev *dev,
974 struct mlx5_ib_op_fc *opfc,
975 enum mlx5_ib_optional_counter_type type)
976{
977 int i;
978
979 for (i = 0; i < MAX_OPFC_RULES && opfc->rule[i]; i++) {
980 mlx5_del_flow_rules(opfc->rule[i]);
981 put_flow_table(dev, &dev->flow_db->opfcs[type], true);
982 }
983}
984
985static void set_underlay_qp(struct mlx5_ib_dev *dev,
986 struct mlx5_flow_spec *spec,
987 u32 underlay_qpn)
988{
989 void *misc_params_c = MLX5_ADDR_OF(fte_match_param,
990 spec->match_criteria,
991 misc_parameters);
992 void *misc_params_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
993 misc_parameters);
994
995 if (underlay_qpn &&
996 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
997 ft_field_support.bth_dst_qp)) {
998 MLX5_SET(fte_match_set_misc,
999 misc_params_v, bth_dst_qp, underlay_qpn);
1000 MLX5_SET(fte_match_set_misc,
1001 misc_params_c, bth_dst_qp, 0xffffff);
1002 }
1003}
1004
1005static void mlx5_ib_set_rule_source_port(struct mlx5_ib_dev *dev,
1006 struct mlx5_flow_spec *spec,
1007 struct mlx5_eswitch_rep *rep)
1008{
1009 struct mlx5_eswitch *esw = dev->mdev->priv.eswitch;
1010 void *misc;
1011
1012 if (mlx5_eswitch_vport_match_metadata_enabled(esw)) {
1013 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1014 misc_parameters_2);
1015
1016 MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
1017 mlx5_eswitch_get_vport_metadata_for_match(rep->esw,
1018 rep->vport));
1019 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1020 misc_parameters_2);
1021
1022 MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
1023 mlx5_eswitch_get_vport_metadata_mask());
1024 } else {
1025 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1026 misc_parameters);
1027
1028 MLX5_SET(fte_match_set_misc, misc, source_port, rep->vport);
1029
1030 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1031 misc_parameters);
1032
1033 MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
1034 }
1035}
1036
1037static struct mlx5_ib_flow_handler *_create_flow_rule(struct mlx5_ib_dev *dev,
1038 struct mlx5_ib_flow_prio *ft_prio,
1039 const struct ib_flow_attr *flow_attr,
1040 struct mlx5_flow_destination *dst,
1041 u32 underlay_qpn,
1042 struct mlx5_ib_create_flow *ucmd)
1043{
1044 struct mlx5_flow_table *ft = ft_prio->flow_table;
1045 struct mlx5_ib_flow_handler *handler;
1046 struct mlx5_flow_act flow_act = {};
1047 struct mlx5_flow_spec *spec;
1048 struct mlx5_flow_destination dest_arr[2] = {};
1049 struct mlx5_flow_destination *rule_dst = dest_arr;
1050 const void *ib_flow = (const void *)flow_attr + sizeof(*flow_attr);
1051 unsigned int spec_index;
1052 u32 prev_type = 0;
1053 int err = 0;
1054 int dest_num = 0;
1055 bool is_egress = flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS;
1056
1057 if (!is_valid_attr(dev->mdev, flow_attr))
1058 return ERR_PTR(-EINVAL);
1059
1060 if (dev->is_rep && is_egress)
1061 return ERR_PTR(-EINVAL);
1062
1063 spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
1064 handler = kzalloc(sizeof(*handler), GFP_KERNEL);
1065 if (!handler || !spec) {
1066 err = -ENOMEM;
1067 goto free;
1068 }
1069
1070 INIT_LIST_HEAD(&handler->list);
1071
1072 for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
1073 err = parse_flow_attr(dev->mdev, spec,
1074 ib_flow, flow_attr, &flow_act,
1075 prev_type);
1076 if (err < 0)
1077 goto free;
1078
1079 prev_type = ((union ib_flow_spec *)ib_flow)->type;
1080 ib_flow += ((union ib_flow_spec *)ib_flow)->size;
1081 }
1082
1083 if (dst && !(flow_act.action & MLX5_FLOW_CONTEXT_ACTION_DROP)) {
1084 memcpy(&dest_arr[0], dst, sizeof(*dst));
1085 dest_num++;
1086 }
1087
1088 if (!flow_is_multicast_only(flow_attr))
1089 set_underlay_qp(dev, spec, underlay_qpn);
1090
1091 if (dev->is_rep && flow_attr->type != IB_FLOW_ATTR_SNIFFER) {
1092 struct mlx5_eswitch_rep *rep;
1093
1094 rep = dev->port[flow_attr->port - 1].rep;
1095 if (!rep) {
1096 err = -EINVAL;
1097 goto free;
1098 }
1099
1100 mlx5_ib_set_rule_source_port(dev, spec, rep);
1101 }
1102
1103 spec->match_criteria_enable = get_match_criteria_enable(spec->match_criteria);
1104
1105 if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
1106 struct mlx5_ib_mcounters *mcounters;
1107
1108 err = mlx5_ib_flow_counters_set_data(flow_act.counters, ucmd);
1109 if (err)
1110 goto free;
1111
1112 mcounters = to_mcounters(flow_act.counters);
1113 handler->ibcounters = flow_act.counters;
1114 dest_arr[dest_num].type =
1115 MLX5_FLOW_DESTINATION_TYPE_COUNTER;
1116 dest_arr[dest_num].counter_id =
1117 mlx5_fc_id(mcounters->hw_cntrs_hndl);
1118 dest_num++;
1119 }
1120
1121 if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_DROP) {
1122 if (!dest_num)
1123 rule_dst = NULL;
1124 } else {
1125 if (flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)
1126 flow_act.action |=
1127 MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO;
1128 if (is_egress)
1129 flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_ALLOW;
1130 else if (dest_num)
1131 flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1132 }
1133
1134 if ((spec->flow_context.flags & FLOW_CONTEXT_HAS_TAG) &&
1135 (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
1136 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT)) {
1137 mlx5_ib_warn(dev, "Flow tag %u and attribute type %x isn't allowed in leftovers\n",
1138 spec->flow_context.flow_tag, flow_attr->type);
1139 err = -EINVAL;
1140 goto free;
1141 }
1142 handler->rule = mlx5_add_flow_rules(ft, spec,
1143 &flow_act,
1144 rule_dst, dest_num);
1145
1146 if (IS_ERR(handler->rule)) {
1147 err = PTR_ERR(handler->rule);
1148 goto free;
1149 }
1150
1151 ft_prio->refcount++;
1152 handler->prio = ft_prio;
1153 handler->dev = dev;
1154
1155 ft_prio->flow_table = ft;
1156free:
1157 if (err && handler) {
1158 mlx5_ib_counters_clear_description(handler->ibcounters);
1159 kfree(handler);
1160 }
1161 kvfree(spec);
1162 return err ? ERR_PTR(err) : handler;
1163}
1164
1165static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev,
1166 struct mlx5_ib_flow_prio *ft_prio,
1167 const struct ib_flow_attr *flow_attr,
1168 struct mlx5_flow_destination *dst)
1169{
1170 return _create_flow_rule(dev, ft_prio, flow_attr, dst, 0, NULL);
1171}
1172
1173enum {
1174 LEFTOVERS_MC,
1175 LEFTOVERS_UC,
1176};
1177
1178static struct mlx5_ib_flow_handler *create_leftovers_rule(struct mlx5_ib_dev *dev,
1179 struct mlx5_ib_flow_prio *ft_prio,
1180 struct ib_flow_attr *flow_attr,
1181 struct mlx5_flow_destination *dst)
1182{
1183 struct mlx5_ib_flow_handler *handler_ucast = NULL;
1184 struct mlx5_ib_flow_handler *handler = NULL;
1185
1186 static struct {
1187 struct ib_flow_attr flow_attr;
1188 struct ib_flow_spec_eth eth_flow;
1189 } leftovers_specs[] = {
1190 [LEFTOVERS_MC] = {
1191 .flow_attr = {
1192 .num_of_specs = 1,
1193 .size = sizeof(leftovers_specs[0])
1194 },
1195 .eth_flow = {
1196 .type = IB_FLOW_SPEC_ETH,
1197 .size = sizeof(struct ib_flow_spec_eth),
1198 .mask = {.dst_mac = {0x1} },
1199 .val = {.dst_mac = {0x1} }
1200 }
1201 },
1202 [LEFTOVERS_UC] = {
1203 .flow_attr = {
1204 .num_of_specs = 1,
1205 .size = sizeof(leftovers_specs[0])
1206 },
1207 .eth_flow = {
1208 .type = IB_FLOW_SPEC_ETH,
1209 .size = sizeof(struct ib_flow_spec_eth),
1210 .mask = {.dst_mac = {0x1} },
1211 .val = {.dst_mac = {} }
1212 }
1213 }
1214 };
1215
1216 handler = create_flow_rule(dev, ft_prio,
1217 &leftovers_specs[LEFTOVERS_MC].flow_attr,
1218 dst);
1219 if (!IS_ERR(handler) &&
1220 flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT) {
1221 handler_ucast = create_flow_rule(dev, ft_prio,
1222 &leftovers_specs[LEFTOVERS_UC].flow_attr,
1223 dst);
1224 if (IS_ERR(handler_ucast)) {
1225 mlx5_del_flow_rules(handler->rule);
1226 ft_prio->refcount--;
1227 kfree(handler);
1228 handler = handler_ucast;
1229 } else {
1230 list_add(&handler_ucast->list, &handler->list);
1231 }
1232 }
1233
1234 return handler;
1235}
1236
1237static struct mlx5_ib_flow_handler *create_sniffer_rule(struct mlx5_ib_dev *dev,
1238 struct mlx5_ib_flow_prio *ft_rx,
1239 struct mlx5_ib_flow_prio *ft_tx,
1240 struct mlx5_flow_destination *dst)
1241{
1242 struct mlx5_ib_flow_handler *handler_rx;
1243 struct mlx5_ib_flow_handler *handler_tx;
1244 int err;
1245 static const struct ib_flow_attr flow_attr = {
1246 .num_of_specs = 0,
1247 .type = IB_FLOW_ATTR_SNIFFER,
1248 .size = sizeof(flow_attr)
1249 };
1250
1251 handler_rx = create_flow_rule(dev, ft_rx, &flow_attr, dst);
1252 if (IS_ERR(handler_rx)) {
1253 err = PTR_ERR(handler_rx);
1254 goto err;
1255 }
1256
1257 handler_tx = create_flow_rule(dev, ft_tx, &flow_attr, dst);
1258 if (IS_ERR(handler_tx)) {
1259 err = PTR_ERR(handler_tx);
1260 goto err_tx;
1261 }
1262
1263 list_add(&handler_tx->list, &handler_rx->list);
1264
1265 return handler_rx;
1266
1267err_tx:
1268 mlx5_del_flow_rules(handler_rx->rule);
1269 ft_rx->refcount--;
1270 kfree(handler_rx);
1271err:
1272 return ERR_PTR(err);
1273}
1274
1275static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp,
1276 struct ib_flow_attr *flow_attr,
1277 struct ib_udata *udata)
1278{
1279 struct mlx5_ib_dev *dev = to_mdev(qp->device);
1280 struct mlx5_ib_qp *mqp = to_mqp(qp);
1281 struct mlx5_ib_flow_handler *handler = NULL;
1282 struct mlx5_flow_destination *dst = NULL;
1283 struct mlx5_ib_flow_prio *ft_prio_tx = NULL;
1284 struct mlx5_ib_flow_prio *ft_prio;
1285 bool is_egress = flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS;
1286 struct mlx5_ib_create_flow *ucmd = NULL, ucmd_hdr;
1287 size_t min_ucmd_sz, required_ucmd_sz;
1288 int err;
1289 int underlay_qpn;
1290
1291 if (udata && udata->inlen) {
1292 min_ucmd_sz = offsetofend(struct mlx5_ib_create_flow, reserved);
1293 if (udata->inlen < min_ucmd_sz)
1294 return ERR_PTR(-EOPNOTSUPP);
1295
1296 err = ib_copy_from_udata(&ucmd_hdr, udata, min_ucmd_sz);
1297 if (err)
1298 return ERR_PTR(err);
1299
1300 /* currently supports only one counters data */
1301 if (ucmd_hdr.ncounters_data > 1)
1302 return ERR_PTR(-EINVAL);
1303
1304 required_ucmd_sz = min_ucmd_sz +
1305 sizeof(struct mlx5_ib_flow_counters_data) *
1306 ucmd_hdr.ncounters_data;
1307 if (udata->inlen > required_ucmd_sz &&
1308 !ib_is_udata_cleared(udata, required_ucmd_sz,
1309 udata->inlen - required_ucmd_sz))
1310 return ERR_PTR(-EOPNOTSUPP);
1311
1312 ucmd = kzalloc(required_ucmd_sz, GFP_KERNEL);
1313 if (!ucmd)
1314 return ERR_PTR(-ENOMEM);
1315
1316 err = ib_copy_from_udata(ucmd, udata, required_ucmd_sz);
1317 if (err)
1318 goto free_ucmd;
1319 }
1320
1321 if (flow_attr->priority > MLX5_IB_FLOW_LAST_PRIO) {
1322 err = -ENOMEM;
1323 goto free_ucmd;
1324 }
1325
1326 if (flow_attr->flags &
1327 ~(IB_FLOW_ATTR_FLAGS_DONT_TRAP | IB_FLOW_ATTR_FLAGS_EGRESS)) {
1328 err = -EINVAL;
1329 goto free_ucmd;
1330 }
1331
1332 if (is_egress &&
1333 (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
1334 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT)) {
1335 err = -EINVAL;
1336 goto free_ucmd;
1337 }
1338
1339 dst = kzalloc(sizeof(*dst), GFP_KERNEL);
1340 if (!dst) {
1341 err = -ENOMEM;
1342 goto free_ucmd;
1343 }
1344
1345 mutex_lock(&dev->flow_db->lock);
1346
1347 ft_prio = get_flow_table(dev, flow_attr,
1348 is_egress ? MLX5_IB_FT_TX : MLX5_IB_FT_RX);
1349 if (IS_ERR(ft_prio)) {
1350 err = PTR_ERR(ft_prio);
1351 goto unlock;
1352 }
1353 if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) {
1354 ft_prio_tx = get_flow_table(dev, flow_attr, MLX5_IB_FT_TX);
1355 if (IS_ERR(ft_prio_tx)) {
1356 err = PTR_ERR(ft_prio_tx);
1357 ft_prio_tx = NULL;
1358 goto destroy_ft;
1359 }
1360 }
1361
1362 if (is_egress) {
1363 dst->type = MLX5_FLOW_DESTINATION_TYPE_PORT;
1364 } else {
1365 dst->type = MLX5_FLOW_DESTINATION_TYPE_TIR;
1366 if (mqp->is_rss)
1367 dst->tir_num = mqp->rss_qp.tirn;
1368 else
1369 dst->tir_num = mqp->raw_packet_qp.rq.tirn;
1370 }
1371
1372 switch (flow_attr->type) {
1373 case IB_FLOW_ATTR_NORMAL:
1374 underlay_qpn = (mqp->flags & IB_QP_CREATE_SOURCE_QPN) ?
1375 mqp->underlay_qpn :
1376 0;
1377 handler = _create_flow_rule(dev, ft_prio, flow_attr, dst,
1378 underlay_qpn, ucmd);
1379 break;
1380 case IB_FLOW_ATTR_ALL_DEFAULT:
1381 case IB_FLOW_ATTR_MC_DEFAULT:
1382 handler = create_leftovers_rule(dev, ft_prio, flow_attr, dst);
1383 break;
1384 case IB_FLOW_ATTR_SNIFFER:
1385 handler = create_sniffer_rule(dev, ft_prio, ft_prio_tx, dst);
1386 break;
1387 default:
1388 err = -EINVAL;
1389 goto destroy_ft;
1390 }
1391
1392 if (IS_ERR(handler)) {
1393 err = PTR_ERR(handler);
1394 handler = NULL;
1395 goto destroy_ft;
1396 }
1397
1398 mutex_unlock(&dev->flow_db->lock);
1399 kfree(dst);
1400 kfree(ucmd);
1401
1402 return &handler->ibflow;
1403
1404destroy_ft:
1405 put_flow_table(dev, ft_prio, false);
1406 if (ft_prio_tx)
1407 put_flow_table(dev, ft_prio_tx, false);
1408unlock:
1409 mutex_unlock(&dev->flow_db->lock);
1410 kfree(dst);
1411free_ucmd:
1412 kfree(ucmd);
1413 return ERR_PTR(err);
1414}
1415
1416static struct mlx5_ib_flow_prio *
1417_get_flow_table(struct mlx5_ib_dev *dev, u16 user_priority,
1418 enum mlx5_flow_namespace_type ns_type,
1419 bool mcast)
1420{
1421 struct mlx5_flow_namespace *ns = NULL;
1422 struct mlx5_ib_flow_prio *prio = NULL;
1423 int max_table_size = 0;
1424 bool esw_encap;
1425 u32 flags = 0;
1426 int priority;
1427
1428 if (mcast)
1429 priority = MLX5_IB_FLOW_MCAST_PRIO;
1430 else
1431 priority = ib_prio_to_core_prio(user_priority, false);
1432
1433 esw_encap = mlx5_eswitch_get_encap_mode(dev->mdev) !=
1434 DEVLINK_ESWITCH_ENCAP_MODE_NONE;
1435 switch (ns_type) {
1436 case MLX5_FLOW_NAMESPACE_BYPASS:
1437 max_table_size = BIT(
1438 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, log_max_ft_size));
1439 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, decap) && !esw_encap)
1440 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_DECAP;
1441 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
1442 reformat_l3_tunnel_to_l2) &&
1443 !esw_encap)
1444 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
1445 break;
1446 case MLX5_FLOW_NAMESPACE_EGRESS:
1447 max_table_size = BIT(
1448 MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, log_max_ft_size));
1449 if (MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, reformat) &&
1450 !esw_encap)
1451 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
1452 break;
1453 case MLX5_FLOW_NAMESPACE_FDB_BYPASS:
1454 max_table_size = BIT(
1455 MLX5_CAP_ESW_FLOWTABLE_FDB(dev->mdev, log_max_ft_size));
1456 if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev->mdev, decap) && esw_encap)
1457 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_DECAP;
1458 if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev->mdev,
1459 reformat_l3_tunnel_to_l2) &&
1460 esw_encap)
1461 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
1462 priority = user_priority;
1463 break;
1464 case MLX5_FLOW_NAMESPACE_RDMA_RX:
1465 max_table_size = BIT(
1466 MLX5_CAP_FLOWTABLE_RDMA_RX(dev->mdev, log_max_ft_size));
1467 priority = user_priority;
1468 break;
1469 case MLX5_FLOW_NAMESPACE_RDMA_TX:
1470 max_table_size = BIT(
1471 MLX5_CAP_FLOWTABLE_RDMA_TX(dev->mdev, log_max_ft_size));
1472 priority = user_priority;
1473 break;
1474 default:
1475 break;
1476 }
1477
1478 max_table_size = min_t(int, max_table_size, MLX5_FS_MAX_ENTRIES);
1479
1480 ns = mlx5_get_flow_namespace(dev->mdev, ns_type);
1481 if (!ns)
1482 return ERR_PTR(-EOPNOTSUPP);
1483
1484 switch (ns_type) {
1485 case MLX5_FLOW_NAMESPACE_BYPASS:
1486 prio = &dev->flow_db->prios[priority];
1487 break;
1488 case MLX5_FLOW_NAMESPACE_EGRESS:
1489 prio = &dev->flow_db->egress_prios[priority];
1490 break;
1491 case MLX5_FLOW_NAMESPACE_FDB_BYPASS:
1492 prio = &dev->flow_db->fdb[priority];
1493 break;
1494 case MLX5_FLOW_NAMESPACE_RDMA_RX:
1495 prio = &dev->flow_db->rdma_rx[priority];
1496 break;
1497 case MLX5_FLOW_NAMESPACE_RDMA_TX:
1498 prio = &dev->flow_db->rdma_tx[priority];
1499 break;
1500 default: return ERR_PTR(-EINVAL);
1501 }
1502
1503 if (!prio)
1504 return ERR_PTR(-EINVAL);
1505
1506 if (prio->flow_table)
1507 return prio;
1508
1509 return _get_prio(dev, ns, prio, priority, max_table_size,
1510 MLX5_FS_MAX_TYPES, flags);
1511}
1512
1513static struct mlx5_ib_flow_handler *
1514_create_raw_flow_rule(struct mlx5_ib_dev *dev,
1515 struct mlx5_ib_flow_prio *ft_prio,
1516 struct mlx5_flow_destination *dst,
1517 struct mlx5_ib_flow_matcher *fs_matcher,
1518 struct mlx5_flow_context *flow_context,
1519 struct mlx5_flow_act *flow_act,
1520 void *cmd_in, int inlen,
1521 int dst_num)
1522{
1523 struct mlx5_ib_flow_handler *handler;
1524 struct mlx5_flow_spec *spec;
1525 struct mlx5_flow_table *ft = ft_prio->flow_table;
1526 int err = 0;
1527
1528 spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
1529 handler = kzalloc(sizeof(*handler), GFP_KERNEL);
1530 if (!handler || !spec) {
1531 err = -ENOMEM;
1532 goto free;
1533 }
1534
1535 INIT_LIST_HEAD(&handler->list);
1536
1537 memcpy(spec->match_value, cmd_in, inlen);
1538 memcpy(spec->match_criteria, fs_matcher->matcher_mask.match_params,
1539 fs_matcher->mask_len);
1540 spec->match_criteria_enable = fs_matcher->match_criteria_enable;
1541 spec->flow_context = *flow_context;
1542
1543 handler->rule = mlx5_add_flow_rules(ft, spec,
1544 flow_act, dst, dst_num);
1545
1546 if (IS_ERR(handler->rule)) {
1547 err = PTR_ERR(handler->rule);
1548 goto free;
1549 }
1550
1551 ft_prio->refcount++;
1552 handler->prio = ft_prio;
1553 handler->dev = dev;
1554 ft_prio->flow_table = ft;
1555
1556free:
1557 if (err)
1558 kfree(handler);
1559 kvfree(spec);
1560 return err ? ERR_PTR(err) : handler;
1561}
1562
1563static bool raw_fs_is_multicast(struct mlx5_ib_flow_matcher *fs_matcher,
1564 void *match_v)
1565{
1566 void *match_c;
1567 void *match_v_set_lyr_2_4, *match_c_set_lyr_2_4;
1568 void *dmac, *dmac_mask;
1569 void *ipv4, *ipv4_mask;
1570
1571 if (!(fs_matcher->match_criteria_enable &
1572 (1 << MATCH_CRITERIA_ENABLE_OUTER_BIT)))
1573 return false;
1574
1575 match_c = fs_matcher->matcher_mask.match_params;
1576 match_v_set_lyr_2_4 = MLX5_ADDR_OF(fte_match_param, match_v,
1577 outer_headers);
1578 match_c_set_lyr_2_4 = MLX5_ADDR_OF(fte_match_param, match_c,
1579 outer_headers);
1580
1581 dmac = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_v_set_lyr_2_4,
1582 dmac_47_16);
1583 dmac_mask = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_c_set_lyr_2_4,
1584 dmac_47_16);
1585
1586 if (is_multicast_ether_addr(dmac) &&
1587 is_multicast_ether_addr(dmac_mask))
1588 return true;
1589
1590 ipv4 = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_v_set_lyr_2_4,
1591 dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
1592
1593 ipv4_mask = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_c_set_lyr_2_4,
1594 dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
1595
1596 if (ipv4_is_multicast(*(__be32 *)(ipv4)) &&
1597 ipv4_is_multicast(*(__be32 *)(ipv4_mask)))
1598 return true;
1599
1600 return false;
1601}
1602
1603static struct mlx5_ib_flow_handler *raw_fs_rule_add(
1604 struct mlx5_ib_dev *dev, struct mlx5_ib_flow_matcher *fs_matcher,
1605 struct mlx5_flow_context *flow_context, struct mlx5_flow_act *flow_act,
1606 u32 counter_id, void *cmd_in, int inlen, int dest_id, int dest_type)
1607{
1608 struct mlx5_flow_destination *dst;
1609 struct mlx5_ib_flow_prio *ft_prio;
1610 struct mlx5_ib_flow_handler *handler;
1611 int dst_num = 0;
1612 bool mcast;
1613 int err;
1614
1615 if (fs_matcher->flow_type != MLX5_IB_FLOW_TYPE_NORMAL)
1616 return ERR_PTR(-EOPNOTSUPP);
1617
1618 if (fs_matcher->priority > MLX5_IB_FLOW_LAST_PRIO)
1619 return ERR_PTR(-ENOMEM);
1620
1621 dst = kcalloc(2, sizeof(*dst), GFP_KERNEL);
1622 if (!dst)
1623 return ERR_PTR(-ENOMEM);
1624
1625 mcast = raw_fs_is_multicast(fs_matcher, cmd_in);
1626 mutex_lock(&dev->flow_db->lock);
1627
1628 ft_prio = _get_flow_table(dev, fs_matcher->priority,
1629 fs_matcher->ns_type, mcast);
1630 if (IS_ERR(ft_prio)) {
1631 err = PTR_ERR(ft_prio);
1632 goto unlock;
1633 }
1634
1635 switch (dest_type) {
1636 case MLX5_FLOW_DESTINATION_TYPE_TIR:
1637 dst[dst_num].type = dest_type;
1638 dst[dst_num++].tir_num = dest_id;
1639 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1640 break;
1641 case MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE:
1642 dst[dst_num].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE_NUM;
1643 dst[dst_num++].ft_num = dest_id;
1644 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1645 break;
1646 case MLX5_FLOW_DESTINATION_TYPE_PORT:
1647 dst[dst_num++].type = MLX5_FLOW_DESTINATION_TYPE_PORT;
1648 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_ALLOW;
1649 break;
1650 default:
1651 break;
1652 }
1653
1654 if (flow_act->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
1655 dst[dst_num].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
1656 dst[dst_num].counter_id = counter_id;
1657 dst_num++;
1658 }
1659
1660 handler = _create_raw_flow_rule(dev, ft_prio, dst_num ? dst : NULL,
1661 fs_matcher, flow_context, flow_act,
1662 cmd_in, inlen, dst_num);
1663
1664 if (IS_ERR(handler)) {
1665 err = PTR_ERR(handler);
1666 goto destroy_ft;
1667 }
1668
1669 mutex_unlock(&dev->flow_db->lock);
1670 atomic_inc(&fs_matcher->usecnt);
1671 handler->flow_matcher = fs_matcher;
1672
1673 kfree(dst);
1674
1675 return handler;
1676
1677destroy_ft:
1678 put_flow_table(dev, ft_prio, false);
1679unlock:
1680 mutex_unlock(&dev->flow_db->lock);
1681 kfree(dst);
1682
1683 return ERR_PTR(err);
1684}
1685
1686static void destroy_flow_action_raw(struct mlx5_ib_flow_action *maction)
1687{
1688 switch (maction->flow_action_raw.sub_type) {
1689 case MLX5_IB_FLOW_ACTION_MODIFY_HEADER:
1690 mlx5_modify_header_dealloc(maction->flow_action_raw.dev->mdev,
1691 maction->flow_action_raw.modify_hdr);
1692 break;
1693 case MLX5_IB_FLOW_ACTION_PACKET_REFORMAT:
1694 mlx5_packet_reformat_dealloc(maction->flow_action_raw.dev->mdev,
1695 maction->flow_action_raw.pkt_reformat);
1696 break;
1697 case MLX5_IB_FLOW_ACTION_DECAP:
1698 break;
1699 default:
1700 break;
1701 }
1702}
1703
1704static int mlx5_ib_destroy_flow_action(struct ib_flow_action *action)
1705{
1706 struct mlx5_ib_flow_action *maction = to_mflow_act(action);
1707
1708 switch (action->type) {
1709 case IB_FLOW_ACTION_UNSPECIFIED:
1710 destroy_flow_action_raw(maction);
1711 break;
1712 default:
1713 WARN_ON(true);
1714 break;
1715 }
1716
1717 kfree(maction);
1718 return 0;
1719}
1720
1721static int
1722mlx5_ib_ft_type_to_namespace(enum mlx5_ib_uapi_flow_table_type table_type,
1723 enum mlx5_flow_namespace_type *namespace)
1724{
1725 switch (table_type) {
1726 case MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX:
1727 *namespace = MLX5_FLOW_NAMESPACE_BYPASS;
1728 break;
1729 case MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX:
1730 *namespace = MLX5_FLOW_NAMESPACE_EGRESS;
1731 break;
1732 case MLX5_IB_UAPI_FLOW_TABLE_TYPE_FDB:
1733 *namespace = MLX5_FLOW_NAMESPACE_FDB_BYPASS;
1734 break;
1735 case MLX5_IB_UAPI_FLOW_TABLE_TYPE_RDMA_RX:
1736 *namespace = MLX5_FLOW_NAMESPACE_RDMA_RX;
1737 break;
1738 case MLX5_IB_UAPI_FLOW_TABLE_TYPE_RDMA_TX:
1739 *namespace = MLX5_FLOW_NAMESPACE_RDMA_TX;
1740 break;
1741 default:
1742 return -EINVAL;
1743 }
1744
1745 return 0;
1746}
1747
1748static const struct uverbs_attr_spec mlx5_ib_flow_type[] = {
1749 [MLX5_IB_FLOW_TYPE_NORMAL] = {
1750 .type = UVERBS_ATTR_TYPE_PTR_IN,
1751 .u.ptr = {
1752 .len = sizeof(u16), /* data is priority */
1753 .min_len = sizeof(u16),
1754 }
1755 },
1756 [MLX5_IB_FLOW_TYPE_SNIFFER] = {
1757 .type = UVERBS_ATTR_TYPE_PTR_IN,
1758 UVERBS_ATTR_NO_DATA(),
1759 },
1760 [MLX5_IB_FLOW_TYPE_ALL_DEFAULT] = {
1761 .type = UVERBS_ATTR_TYPE_PTR_IN,
1762 UVERBS_ATTR_NO_DATA(),
1763 },
1764 [MLX5_IB_FLOW_TYPE_MC_DEFAULT] = {
1765 .type = UVERBS_ATTR_TYPE_PTR_IN,
1766 UVERBS_ATTR_NO_DATA(),
1767 },
1768};
1769
1770static bool is_flow_dest(void *obj, int *dest_id, int *dest_type)
1771{
1772 struct devx_obj *devx_obj = obj;
1773 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox, opcode);
1774
1775 switch (opcode) {
1776 case MLX5_CMD_OP_DESTROY_TIR:
1777 *dest_type = MLX5_FLOW_DESTINATION_TYPE_TIR;
1778 *dest_id = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox,
1779 obj_id);
1780 return true;
1781
1782 case MLX5_CMD_OP_DESTROY_FLOW_TABLE:
1783 *dest_type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
1784 *dest_id = MLX5_GET(destroy_flow_table_in, devx_obj->dinbox,
1785 table_id);
1786 return true;
1787 default:
1788 return false;
1789 }
1790}
1791
1792static int get_dests(struct uverbs_attr_bundle *attrs,
1793 struct mlx5_ib_flow_matcher *fs_matcher, int *dest_id,
1794 int *dest_type, struct ib_qp **qp, u32 *flags)
1795{
1796 bool dest_devx, dest_qp;
1797 void *devx_obj;
1798 int err;
1799
1800 dest_devx = uverbs_attr_is_valid(attrs,
1801 MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX);
1802 dest_qp = uverbs_attr_is_valid(attrs,
1803 MLX5_IB_ATTR_CREATE_FLOW_DEST_QP);
1804
1805 *flags = 0;
1806 err = uverbs_get_flags32(flags, attrs, MLX5_IB_ATTR_CREATE_FLOW_FLAGS,
1807 MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS |
1808 MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP);
1809 if (err)
1810 return err;
1811
1812 /* Both flags are not allowed */
1813 if (*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS &&
1814 *flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)
1815 return -EINVAL;
1816
1817 if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_BYPASS) {
1818 if (dest_devx && (dest_qp || *flags))
1819 return -EINVAL;
1820 else if (dest_qp && *flags)
1821 return -EINVAL;
1822 }
1823
1824 /* Allow only DEVX object, drop as dest for FDB */
1825 if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB_BYPASS &&
1826 !(dest_devx || (*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)))
1827 return -EINVAL;
1828
1829 /* Allow only DEVX object or QP as dest when inserting to RDMA_RX */
1830 if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX) &&
1831 ((!dest_devx && !dest_qp) || (dest_devx && dest_qp)))
1832 return -EINVAL;
1833
1834 *qp = NULL;
1835 if (dest_devx) {
1836 devx_obj =
1837 uverbs_attr_get_obj(attrs,
1838 MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX);
1839
1840 /* Verify that the given DEVX object is a flow
1841 * steering destination.
1842 */
1843 if (!is_flow_dest(devx_obj, dest_id, dest_type))
1844 return -EINVAL;
1845 /* Allow only flow table as dest when inserting to FDB or RDMA_RX */
1846 if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB_BYPASS ||
1847 fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX) &&
1848 *dest_type != MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE)
1849 return -EINVAL;
1850 } else if (dest_qp) {
1851 struct mlx5_ib_qp *mqp;
1852
1853 *qp = uverbs_attr_get_obj(attrs,
1854 MLX5_IB_ATTR_CREATE_FLOW_DEST_QP);
1855 if (IS_ERR(*qp))
1856 return PTR_ERR(*qp);
1857
1858 if ((*qp)->qp_type != IB_QPT_RAW_PACKET)
1859 return -EINVAL;
1860
1861 mqp = to_mqp(*qp);
1862 if (mqp->is_rss)
1863 *dest_id = mqp->rss_qp.tirn;
1864 else
1865 *dest_id = mqp->raw_packet_qp.rq.tirn;
1866 *dest_type = MLX5_FLOW_DESTINATION_TYPE_TIR;
1867 } else if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS ||
1868 fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_TX) &&
1869 !(*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)) {
1870 *dest_type = MLX5_FLOW_DESTINATION_TYPE_PORT;
1871 }
1872
1873 if (*dest_type == MLX5_FLOW_DESTINATION_TYPE_TIR &&
1874 (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS ||
1875 fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_TX))
1876 return -EINVAL;
1877
1878 return 0;
1879}
1880
1881static bool is_flow_counter(void *obj, u32 offset, u32 *counter_id)
1882{
1883 struct devx_obj *devx_obj = obj;
1884 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox, opcode);
1885
1886 if (opcode == MLX5_CMD_OP_DEALLOC_FLOW_COUNTER) {
1887
1888 if (offset && offset >= devx_obj->flow_counter_bulk_size)
1889 return false;
1890
1891 *counter_id = MLX5_GET(dealloc_flow_counter_in,
1892 devx_obj->dinbox,
1893 flow_counter_id);
1894 *counter_id += offset;
1895 return true;
1896 }
1897
1898 return false;
1899}
1900
1901#define MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS 2
1902static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
1903 struct uverbs_attr_bundle *attrs)
1904{
1905 struct mlx5_flow_context flow_context = {.flow_tag =
1906 MLX5_FS_DEFAULT_FLOW_TAG};
1907 u32 *offset_attr, offset = 0, counter_id = 0;
1908 int dest_id, dest_type = -1, inlen, len, ret, i;
1909 struct mlx5_ib_flow_handler *flow_handler;
1910 struct mlx5_ib_flow_matcher *fs_matcher;
1911 struct ib_uobject **arr_flow_actions;
1912 struct ib_uflow_resources *uflow_res;
1913 struct mlx5_flow_act flow_act = {};
1914 struct ib_qp *qp = NULL;
1915 void *devx_obj, *cmd_in;
1916 struct ib_uobject *uobj;
1917 struct mlx5_ib_dev *dev;
1918 u32 flags;
1919
1920 if (!capable(CAP_NET_RAW))
1921 return -EPERM;
1922
1923 fs_matcher = uverbs_attr_get_obj(attrs,
1924 MLX5_IB_ATTR_CREATE_FLOW_MATCHER);
1925 uobj = uverbs_attr_get_uobject(attrs, MLX5_IB_ATTR_CREATE_FLOW_HANDLE);
1926 dev = mlx5_udata_to_mdev(&attrs->driver_udata);
1927
1928 if (get_dests(attrs, fs_matcher, &dest_id, &dest_type, &qp, &flags))
1929 return -EINVAL;
1930
1931 if (flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS)
1932 flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_NS;
1933
1934 if (flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)
1935 flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
1936
1937 len = uverbs_attr_get_uobjs_arr(attrs,
1938 MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX, &arr_flow_actions);
1939 if (len) {
1940 devx_obj = arr_flow_actions[0]->object;
1941
1942 if (uverbs_attr_is_valid(attrs,
1943 MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET)) {
1944
1945 int num_offsets = uverbs_attr_ptr_get_array_size(
1946 attrs,
1947 MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET,
1948 sizeof(u32));
1949
1950 if (num_offsets != 1)
1951 return -EINVAL;
1952
1953 offset_attr = uverbs_attr_get_alloced_ptr(
1954 attrs,
1955 MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET);
1956 offset = *offset_attr;
1957 }
1958
1959 if (!is_flow_counter(devx_obj, offset, &counter_id))
1960 return -EINVAL;
1961
1962 flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
1963 }
1964
1965 cmd_in = uverbs_attr_get_alloced_ptr(
1966 attrs, MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);
1967 inlen = uverbs_attr_get_len(attrs,
1968 MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);
1969
1970 uflow_res = flow_resources_alloc(MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS);
1971 if (!uflow_res)
1972 return -ENOMEM;
1973
1974 len = uverbs_attr_get_uobjs_arr(attrs,
1975 MLX5_IB_ATTR_CREATE_FLOW_ARR_FLOW_ACTIONS, &arr_flow_actions);
1976 for (i = 0; i < len; i++) {
1977 struct mlx5_ib_flow_action *maction =
1978 to_mflow_act(arr_flow_actions[i]->object);
1979
1980 ret = parse_flow_flow_action(maction, false, &flow_act);
1981 if (ret)
1982 goto err_out;
1983 flow_resources_add(uflow_res, IB_FLOW_SPEC_ACTION_HANDLE,
1984 arr_flow_actions[i]->object);
1985 }
1986
1987 ret = uverbs_copy_from(&flow_context.flow_tag, attrs,
1988 MLX5_IB_ATTR_CREATE_FLOW_TAG);
1989 if (!ret) {
1990 if (flow_context.flow_tag >= BIT(24)) {
1991 ret = -EINVAL;
1992 goto err_out;
1993 }
1994 flow_context.flags |= FLOW_CONTEXT_HAS_TAG;
1995 }
1996
1997 flow_handler =
1998 raw_fs_rule_add(dev, fs_matcher, &flow_context, &flow_act,
1999 counter_id, cmd_in, inlen, dest_id, dest_type);
2000 if (IS_ERR(flow_handler)) {
2001 ret = PTR_ERR(flow_handler);
2002 goto err_out;
2003 }
2004
2005 ib_set_flow(uobj, &flow_handler->ibflow, qp, &dev->ib_dev, uflow_res);
2006
2007 return 0;
2008err_out:
2009 ib_uverbs_flow_resources_free(uflow_res);
2010 return ret;
2011}
2012
2013static int flow_matcher_cleanup(struct ib_uobject *uobject,
2014 enum rdma_remove_reason why,
2015 struct uverbs_attr_bundle *attrs)
2016{
2017 struct mlx5_ib_flow_matcher *obj = uobject->object;
2018
2019 if (atomic_read(&obj->usecnt))
2020 return -EBUSY;
2021
2022 kfree(obj);
2023 return 0;
2024}
2025
2026static int steering_anchor_create_ft(struct mlx5_ib_dev *dev,
2027 struct mlx5_ib_flow_prio *ft_prio,
2028 enum mlx5_flow_namespace_type ns_type)
2029{
2030 struct mlx5_flow_table_attr ft_attr = {};
2031 struct mlx5_flow_namespace *ns;
2032 struct mlx5_flow_table *ft;
2033
2034 if (ft_prio->anchor.ft)
2035 return 0;
2036
2037 ns = mlx5_get_flow_namespace(dev->mdev, ns_type);
2038 if (!ns)
2039 return -EOPNOTSUPP;
2040
2041 ft_attr.flags = MLX5_FLOW_TABLE_UNMANAGED;
2042 ft_attr.uid = MLX5_SHARED_RESOURCE_UID;
2043 ft_attr.prio = 0;
2044 ft_attr.max_fte = 2;
2045 ft_attr.level = 1;
2046
2047 ft = mlx5_create_flow_table(ns, &ft_attr);
2048 if (IS_ERR(ft))
2049 return PTR_ERR(ft);
2050
2051 ft_prio->anchor.ft = ft;
2052
2053 return 0;
2054}
2055
2056static void steering_anchor_destroy_ft(struct mlx5_ib_flow_prio *ft_prio)
2057{
2058 if (ft_prio->anchor.ft) {
2059 mlx5_destroy_flow_table(ft_prio->anchor.ft);
2060 ft_prio->anchor.ft = NULL;
2061 }
2062}
2063
2064static int
2065steering_anchor_create_fg_drop(struct mlx5_ib_flow_prio *ft_prio)
2066{
2067 int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
2068 struct mlx5_flow_group *fg;
2069 void *flow_group_in;
2070 int err = 0;
2071
2072 if (ft_prio->anchor.fg_drop)
2073 return 0;
2074
2075 flow_group_in = kvzalloc(inlen, GFP_KERNEL);
2076 if (!flow_group_in)
2077 return -ENOMEM;
2078
2079 MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 1);
2080 MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, 1);
2081
2082 fg = mlx5_create_flow_group(ft_prio->anchor.ft, flow_group_in);
2083 if (IS_ERR(fg)) {
2084 err = PTR_ERR(fg);
2085 goto out;
2086 }
2087
2088 ft_prio->anchor.fg_drop = fg;
2089
2090out:
2091 kvfree(flow_group_in);
2092
2093 return err;
2094}
2095
2096static void
2097steering_anchor_destroy_fg_drop(struct mlx5_ib_flow_prio *ft_prio)
2098{
2099 if (ft_prio->anchor.fg_drop) {
2100 mlx5_destroy_flow_group(ft_prio->anchor.fg_drop);
2101 ft_prio->anchor.fg_drop = NULL;
2102 }
2103}
2104
2105static int
2106steering_anchor_create_fg_goto_table(struct mlx5_ib_flow_prio *ft_prio)
2107{
2108 int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
2109 struct mlx5_flow_group *fg;
2110 void *flow_group_in;
2111 int err = 0;
2112
2113 if (ft_prio->anchor.fg_goto_table)
2114 return 0;
2115
2116 flow_group_in = kvzalloc(inlen, GFP_KERNEL);
2117 if (!flow_group_in)
2118 return -ENOMEM;
2119
2120 fg = mlx5_create_flow_group(ft_prio->anchor.ft, flow_group_in);
2121 if (IS_ERR(fg)) {
2122 err = PTR_ERR(fg);
2123 goto out;
2124 }
2125 ft_prio->anchor.fg_goto_table = fg;
2126
2127out:
2128 kvfree(flow_group_in);
2129
2130 return err;
2131}
2132
2133static void
2134steering_anchor_destroy_fg_goto_table(struct mlx5_ib_flow_prio *ft_prio)
2135{
2136 if (ft_prio->anchor.fg_goto_table) {
2137 mlx5_destroy_flow_group(ft_prio->anchor.fg_goto_table);
2138 ft_prio->anchor.fg_goto_table = NULL;
2139 }
2140}
2141
2142static int
2143steering_anchor_create_rule_drop(struct mlx5_ib_flow_prio *ft_prio)
2144{
2145 struct mlx5_flow_act flow_act = {};
2146 struct mlx5_flow_handle *handle;
2147
2148 if (ft_prio->anchor.rule_drop)
2149 return 0;
2150
2151 flow_act.fg = ft_prio->anchor.fg_drop;
2152 flow_act.action = MLX5_FLOW_CONTEXT_ACTION_DROP;
2153
2154 handle = mlx5_add_flow_rules(ft_prio->anchor.ft, NULL, &flow_act,
2155 NULL, 0);
2156 if (IS_ERR(handle))
2157 return PTR_ERR(handle);
2158
2159 ft_prio->anchor.rule_drop = handle;
2160
2161 return 0;
2162}
2163
2164static void steering_anchor_destroy_rule_drop(struct mlx5_ib_flow_prio *ft_prio)
2165{
2166 if (ft_prio->anchor.rule_drop) {
2167 mlx5_del_flow_rules(ft_prio->anchor.rule_drop);
2168 ft_prio->anchor.rule_drop = NULL;
2169 }
2170}
2171
2172static int
2173steering_anchor_create_rule_goto_table(struct mlx5_ib_flow_prio *ft_prio)
2174{
2175 struct mlx5_flow_destination dest = {};
2176 struct mlx5_flow_act flow_act = {};
2177 struct mlx5_flow_handle *handle;
2178
2179 if (ft_prio->anchor.rule_goto_table)
2180 return 0;
2181
2182 flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
2183 flow_act.flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
2184 flow_act.fg = ft_prio->anchor.fg_goto_table;
2185
2186 dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
2187 dest.ft = ft_prio->flow_table;
2188
2189 handle = mlx5_add_flow_rules(ft_prio->anchor.ft, NULL, &flow_act,
2190 &dest, 1);
2191 if (IS_ERR(handle))
2192 return PTR_ERR(handle);
2193
2194 ft_prio->anchor.rule_goto_table = handle;
2195
2196 return 0;
2197}
2198
2199static void
2200steering_anchor_destroy_rule_goto_table(struct mlx5_ib_flow_prio *ft_prio)
2201{
2202 if (ft_prio->anchor.rule_goto_table) {
2203 mlx5_del_flow_rules(ft_prio->anchor.rule_goto_table);
2204 ft_prio->anchor.rule_goto_table = NULL;
2205 }
2206}
2207
2208static int steering_anchor_create_res(struct mlx5_ib_dev *dev,
2209 struct mlx5_ib_flow_prio *ft_prio,
2210 enum mlx5_flow_namespace_type ns_type)
2211{
2212 int err;
2213
2214 err = steering_anchor_create_ft(dev, ft_prio, ns_type);
2215 if (err)
2216 return err;
2217
2218 err = steering_anchor_create_fg_drop(ft_prio);
2219 if (err)
2220 goto destroy_ft;
2221
2222 err = steering_anchor_create_fg_goto_table(ft_prio);
2223 if (err)
2224 goto destroy_fg_drop;
2225
2226 err = steering_anchor_create_rule_drop(ft_prio);
2227 if (err)
2228 goto destroy_fg_goto_table;
2229
2230 err = steering_anchor_create_rule_goto_table(ft_prio);
2231 if (err)
2232 goto destroy_rule_drop;
2233
2234 return 0;
2235
2236destroy_rule_drop:
2237 steering_anchor_destroy_rule_drop(ft_prio);
2238destroy_fg_goto_table:
2239 steering_anchor_destroy_fg_goto_table(ft_prio);
2240destroy_fg_drop:
2241 steering_anchor_destroy_fg_drop(ft_prio);
2242destroy_ft:
2243 steering_anchor_destroy_ft(ft_prio);
2244
2245 return err;
2246}
2247
2248static void mlx5_steering_anchor_destroy_res(struct mlx5_ib_flow_prio *ft_prio)
2249{
2250 steering_anchor_destroy_rule_goto_table(ft_prio);
2251 steering_anchor_destroy_rule_drop(ft_prio);
2252 steering_anchor_destroy_fg_goto_table(ft_prio);
2253 steering_anchor_destroy_fg_drop(ft_prio);
2254 steering_anchor_destroy_ft(ft_prio);
2255}
2256
2257static int steering_anchor_cleanup(struct ib_uobject *uobject,
2258 enum rdma_remove_reason why,
2259 struct uverbs_attr_bundle *attrs)
2260{
2261 struct mlx5_ib_steering_anchor *obj = uobject->object;
2262
2263 if (atomic_read(&obj->usecnt))
2264 return -EBUSY;
2265
2266 mutex_lock(&obj->dev->flow_db->lock);
2267 if (!--obj->ft_prio->anchor.rule_goto_table_ref)
2268 steering_anchor_destroy_rule_goto_table(obj->ft_prio);
2269
2270 put_flow_table(obj->dev, obj->ft_prio, true);
2271 mutex_unlock(&obj->dev->flow_db->lock);
2272
2273 kfree(obj);
2274 return 0;
2275}
2276
2277static void fs_cleanup_anchor(struct mlx5_ib_flow_prio *prio,
2278 int count)
2279{
2280 while (count--)
2281 mlx5_steering_anchor_destroy_res(&prio[count]);
2282}
2283
2284void mlx5_ib_fs_cleanup_anchor(struct mlx5_ib_dev *dev)
2285{
2286 fs_cleanup_anchor(dev->flow_db->prios, MLX5_IB_NUM_FLOW_FT);
2287 fs_cleanup_anchor(dev->flow_db->egress_prios, MLX5_IB_NUM_FLOW_FT);
2288 fs_cleanup_anchor(dev->flow_db->sniffer, MLX5_IB_NUM_SNIFFER_FTS);
2289 fs_cleanup_anchor(dev->flow_db->egress, MLX5_IB_NUM_EGRESS_FTS);
2290 fs_cleanup_anchor(dev->flow_db->fdb, MLX5_IB_NUM_FDB_FTS);
2291 fs_cleanup_anchor(dev->flow_db->rdma_rx, MLX5_IB_NUM_FLOW_FT);
2292 fs_cleanup_anchor(dev->flow_db->rdma_tx, MLX5_IB_NUM_FLOW_FT);
2293}
2294
2295static int mlx5_ib_matcher_ns(struct uverbs_attr_bundle *attrs,
2296 struct mlx5_ib_flow_matcher *obj)
2297{
2298 enum mlx5_ib_uapi_flow_table_type ft_type =
2299 MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX;
2300 u32 flags;
2301 int err;
2302
2303 /* New users should use MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE and older
2304 * users should switch to it. We leave this to not break userspace
2305 */
2306 if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE) &&
2307 uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS))
2308 return -EINVAL;
2309
2310 if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE)) {
2311 err = uverbs_get_const(&ft_type, attrs,
2312 MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE);
2313 if (err)
2314 return err;
2315
2316 err = mlx5_ib_ft_type_to_namespace(ft_type, &obj->ns_type);
2317 if (err)
2318 return err;
2319
2320 return 0;
2321 }
2322
2323 if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS)) {
2324 err = uverbs_get_flags32(&flags, attrs,
2325 MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS,
2326 IB_FLOW_ATTR_FLAGS_EGRESS);
2327 if (err)
2328 return err;
2329
2330 if (flags)
2331 return mlx5_ib_ft_type_to_namespace(
2332 MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX,
2333 &obj->ns_type);
2334 }
2335
2336 obj->ns_type = MLX5_FLOW_NAMESPACE_BYPASS;
2337
2338 return 0;
2339}
2340
2341static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_MATCHER_CREATE)(
2342 struct uverbs_attr_bundle *attrs)
2343{
2344 struct ib_uobject *uobj = uverbs_attr_get_uobject(
2345 attrs, MLX5_IB_ATTR_FLOW_MATCHER_CREATE_HANDLE);
2346 struct mlx5_ib_dev *dev = mlx5_udata_to_mdev(&attrs->driver_udata);
2347 struct mlx5_ib_flow_matcher *obj;
2348 int err;
2349
2350 obj = kzalloc(sizeof(struct mlx5_ib_flow_matcher), GFP_KERNEL);
2351 if (!obj)
2352 return -ENOMEM;
2353
2354 obj->mask_len = uverbs_attr_get_len(
2355 attrs, MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK);
2356 err = uverbs_copy_from(&obj->matcher_mask,
2357 attrs,
2358 MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK);
2359 if (err)
2360 goto end;
2361
2362 obj->flow_type = uverbs_attr_get_enum_id(
2363 attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE);
2364
2365 if (obj->flow_type == MLX5_IB_FLOW_TYPE_NORMAL) {
2366 err = uverbs_copy_from(&obj->priority,
2367 attrs,
2368 MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE);
2369 if (err)
2370 goto end;
2371 }
2372
2373 err = uverbs_copy_from(&obj->match_criteria_enable,
2374 attrs,
2375 MLX5_IB_ATTR_FLOW_MATCHER_MATCH_CRITERIA);
2376 if (err)
2377 goto end;
2378
2379 err = mlx5_ib_matcher_ns(attrs, obj);
2380 if (err)
2381 goto end;
2382
2383 if (obj->ns_type == MLX5_FLOW_NAMESPACE_FDB_BYPASS &&
2384 mlx5_eswitch_mode(dev->mdev) != MLX5_ESWITCH_OFFLOADS) {
2385 err = -EINVAL;
2386 goto end;
2387 }
2388
2389 uobj->object = obj;
2390 obj->mdev = dev->mdev;
2391 atomic_set(&obj->usecnt, 0);
2392 return 0;
2393
2394end:
2395 kfree(obj);
2396 return err;
2397}
2398
2399static int UVERBS_HANDLER(MLX5_IB_METHOD_STEERING_ANCHOR_CREATE)(
2400 struct uverbs_attr_bundle *attrs)
2401{
2402 struct ib_uobject *uobj = uverbs_attr_get_uobject(
2403 attrs, MLX5_IB_ATTR_STEERING_ANCHOR_CREATE_HANDLE);
2404 struct mlx5_ib_dev *dev = mlx5_udata_to_mdev(&attrs->driver_udata);
2405 enum mlx5_ib_uapi_flow_table_type ib_uapi_ft_type;
2406 enum mlx5_flow_namespace_type ns_type;
2407 struct mlx5_ib_steering_anchor *obj;
2408 struct mlx5_ib_flow_prio *ft_prio;
2409 u16 priority;
2410 u32 ft_id;
2411 int err;
2412
2413 if (!capable(CAP_NET_RAW))
2414 return -EPERM;
2415
2416 err = uverbs_get_const(&ib_uapi_ft_type, attrs,
2417 MLX5_IB_ATTR_STEERING_ANCHOR_FT_TYPE);
2418 if (err)
2419 return err;
2420
2421 err = mlx5_ib_ft_type_to_namespace(ib_uapi_ft_type, &ns_type);
2422 if (err)
2423 return err;
2424
2425 err = uverbs_copy_from(&priority, attrs,
2426 MLX5_IB_ATTR_STEERING_ANCHOR_PRIORITY);
2427 if (err)
2428 return err;
2429
2430 obj = kzalloc(sizeof(*obj), GFP_KERNEL);
2431 if (!obj)
2432 return -ENOMEM;
2433
2434 mutex_lock(&dev->flow_db->lock);
2435
2436 ft_prio = _get_flow_table(dev, priority, ns_type, 0);
2437 if (IS_ERR(ft_prio)) {
2438 err = PTR_ERR(ft_prio);
2439 goto free_obj;
2440 }
2441
2442 ft_prio->refcount++;
2443
2444 if (!ft_prio->anchor.rule_goto_table_ref) {
2445 err = steering_anchor_create_res(dev, ft_prio, ns_type);
2446 if (err)
2447 goto put_flow_table;
2448 }
2449
2450 ft_prio->anchor.rule_goto_table_ref++;
2451
2452 ft_id = mlx5_flow_table_id(ft_prio->anchor.ft);
2453
2454 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_STEERING_ANCHOR_FT_ID,
2455 &ft_id, sizeof(ft_id));
2456 if (err)
2457 goto destroy_res;
2458
2459 mutex_unlock(&dev->flow_db->lock);
2460
2461 uobj->object = obj;
2462 obj->dev = dev;
2463 obj->ft_prio = ft_prio;
2464 atomic_set(&obj->usecnt, 0);
2465
2466 return 0;
2467
2468destroy_res:
2469 --ft_prio->anchor.rule_goto_table_ref;
2470 mlx5_steering_anchor_destroy_res(ft_prio);
2471put_flow_table:
2472 put_flow_table(dev, ft_prio, true);
2473free_obj:
2474 mutex_unlock(&dev->flow_db->lock);
2475 kfree(obj);
2476
2477 return err;
2478}
2479
2480static struct ib_flow_action *
2481mlx5_ib_create_modify_header(struct mlx5_ib_dev *dev,
2482 enum mlx5_ib_uapi_flow_table_type ft_type,
2483 u8 num_actions, void *in)
2484{
2485 enum mlx5_flow_namespace_type namespace;
2486 struct mlx5_ib_flow_action *maction;
2487 int ret;
2488
2489 ret = mlx5_ib_ft_type_to_namespace(ft_type, &namespace);
2490 if (ret)
2491 return ERR_PTR(-EINVAL);
2492
2493 maction = kzalloc(sizeof(*maction), GFP_KERNEL);
2494 if (!maction)
2495 return ERR_PTR(-ENOMEM);
2496
2497 maction->flow_action_raw.modify_hdr =
2498 mlx5_modify_header_alloc(dev->mdev, namespace, num_actions, in);
2499
2500 if (IS_ERR(maction->flow_action_raw.modify_hdr)) {
2501 ret = PTR_ERR(maction->flow_action_raw.modify_hdr);
2502 kfree(maction);
2503 return ERR_PTR(ret);
2504 }
2505 maction->flow_action_raw.sub_type =
2506 MLX5_IB_FLOW_ACTION_MODIFY_HEADER;
2507 maction->flow_action_raw.dev = dev;
2508
2509 return &maction->ib_action;
2510}
2511
2512static bool mlx5_ib_modify_header_supported(struct mlx5_ib_dev *dev)
2513{
2514 return MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
2515 max_modify_header_actions) ||
2516 MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev,
2517 max_modify_header_actions) ||
2518 MLX5_CAP_FLOWTABLE_RDMA_TX(dev->mdev,
2519 max_modify_header_actions);
2520}
2521
2522static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER)(
2523 struct uverbs_attr_bundle *attrs)
2524{
2525 struct ib_uobject *uobj = uverbs_attr_get_uobject(
2526 attrs, MLX5_IB_ATTR_CREATE_MODIFY_HEADER_HANDLE);
2527 struct mlx5_ib_dev *mdev = mlx5_udata_to_mdev(&attrs->driver_udata);
2528 enum mlx5_ib_uapi_flow_table_type ft_type;
2529 struct ib_flow_action *action;
2530 int num_actions;
2531 void *in;
2532 int ret;
2533
2534 if (!mlx5_ib_modify_header_supported(mdev))
2535 return -EOPNOTSUPP;
2536
2537 in = uverbs_attr_get_alloced_ptr(attrs,
2538 MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM);
2539
2540 num_actions = uverbs_attr_ptr_get_array_size(
2541 attrs, MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM,
2542 MLX5_UN_SZ_BYTES(set_add_copy_action_in_auto));
2543 if (num_actions < 0)
2544 return num_actions;
2545
2546 ret = uverbs_get_const(&ft_type, attrs,
2547 MLX5_IB_ATTR_CREATE_MODIFY_HEADER_FT_TYPE);
2548 if (ret)
2549 return ret;
2550 action = mlx5_ib_create_modify_header(mdev, ft_type, num_actions, in);
2551 if (IS_ERR(action))
2552 return PTR_ERR(action);
2553
2554 uverbs_flow_action_fill_action(action, uobj, &mdev->ib_dev,
2555 IB_FLOW_ACTION_UNSPECIFIED);
2556
2557 return 0;
2558}
2559
2560static bool mlx5_ib_flow_action_packet_reformat_valid(struct mlx5_ib_dev *ibdev,
2561 u8 packet_reformat_type,
2562 u8 ft_type)
2563{
2564 switch (packet_reformat_type) {
2565 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL:
2566 if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX)
2567 return MLX5_CAP_FLOWTABLE(ibdev->mdev,
2568 encap_general_header);
2569 break;
2570 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L3_TUNNEL:
2571 if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX)
2572 return MLX5_CAP_FLOWTABLE_NIC_TX(ibdev->mdev,
2573 reformat_l2_to_l3_tunnel);
2574 break;
2575 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L3_TUNNEL_TO_L2:
2576 if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX)
2577 return MLX5_CAP_FLOWTABLE_NIC_RX(ibdev->mdev,
2578 reformat_l3_tunnel_to_l2);
2579 break;
2580 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2:
2581 if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX)
2582 return MLX5_CAP_FLOWTABLE_NIC_RX(ibdev->mdev, decap);
2583 break;
2584 default:
2585 break;
2586 }
2587
2588 return false;
2589}
2590
2591static int mlx5_ib_dv_to_prm_packet_reforamt_type(u8 dv_prt, u8 *prm_prt)
2592{
2593 switch (dv_prt) {
2594 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL:
2595 *prm_prt = MLX5_REFORMAT_TYPE_L2_TO_L2_TUNNEL;
2596 break;
2597 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L3_TUNNEL_TO_L2:
2598 *prm_prt = MLX5_REFORMAT_TYPE_L3_TUNNEL_TO_L2;
2599 break;
2600 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L3_TUNNEL:
2601 *prm_prt = MLX5_REFORMAT_TYPE_L2_TO_L3_TUNNEL;
2602 break;
2603 default:
2604 return -EINVAL;
2605 }
2606
2607 return 0;
2608}
2609
2610static int mlx5_ib_flow_action_create_packet_reformat_ctx(
2611 struct mlx5_ib_dev *dev,
2612 struct mlx5_ib_flow_action *maction,
2613 u8 ft_type, u8 dv_prt,
2614 void *in, size_t len)
2615{
2616 struct mlx5_pkt_reformat_params reformat_params;
2617 enum mlx5_flow_namespace_type namespace;
2618 u8 prm_prt;
2619 int ret;
2620
2621 ret = mlx5_ib_ft_type_to_namespace(ft_type, &namespace);
2622 if (ret)
2623 return ret;
2624
2625 ret = mlx5_ib_dv_to_prm_packet_reforamt_type(dv_prt, &prm_prt);
2626 if (ret)
2627 return ret;
2628
2629 memset(&reformat_params, 0, sizeof(reformat_params));
2630 reformat_params.type = prm_prt;
2631 reformat_params.size = len;
2632 reformat_params.data = in;
2633 maction->flow_action_raw.pkt_reformat =
2634 mlx5_packet_reformat_alloc(dev->mdev, &reformat_params,
2635 namespace);
2636 if (IS_ERR(maction->flow_action_raw.pkt_reformat)) {
2637 ret = PTR_ERR(maction->flow_action_raw.pkt_reformat);
2638 return ret;
2639 }
2640
2641 maction->flow_action_raw.sub_type =
2642 MLX5_IB_FLOW_ACTION_PACKET_REFORMAT;
2643 maction->flow_action_raw.dev = dev;
2644
2645 return 0;
2646}
2647
2648static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT)(
2649 struct uverbs_attr_bundle *attrs)
2650{
2651 struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
2652 MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_HANDLE);
2653 struct mlx5_ib_dev *mdev = mlx5_udata_to_mdev(&attrs->driver_udata);
2654 enum mlx5_ib_uapi_flow_action_packet_reformat_type dv_prt;
2655 enum mlx5_ib_uapi_flow_table_type ft_type;
2656 struct mlx5_ib_flow_action *maction;
2657 int ret;
2658
2659 ret = uverbs_get_const(&ft_type, attrs,
2660 MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_FT_TYPE);
2661 if (ret)
2662 return ret;
2663
2664 ret = uverbs_get_const(&dv_prt, attrs,
2665 MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_TYPE);
2666 if (ret)
2667 return ret;
2668
2669 if (!mlx5_ib_flow_action_packet_reformat_valid(mdev, dv_prt, ft_type))
2670 return -EOPNOTSUPP;
2671
2672 maction = kzalloc(sizeof(*maction), GFP_KERNEL);
2673 if (!maction)
2674 return -ENOMEM;
2675
2676 if (dv_prt ==
2677 MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2) {
2678 maction->flow_action_raw.sub_type =
2679 MLX5_IB_FLOW_ACTION_DECAP;
2680 maction->flow_action_raw.dev = mdev;
2681 } else {
2682 void *in;
2683 int len;
2684
2685 in = uverbs_attr_get_alloced_ptr(attrs,
2686 MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF);
2687 if (IS_ERR(in)) {
2688 ret = PTR_ERR(in);
2689 goto free_maction;
2690 }
2691
2692 len = uverbs_attr_get_len(attrs,
2693 MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF);
2694
2695 ret = mlx5_ib_flow_action_create_packet_reformat_ctx(mdev,
2696 maction, ft_type, dv_prt, in, len);
2697 if (ret)
2698 goto free_maction;
2699 }
2700
2701 uverbs_flow_action_fill_action(&maction->ib_action, uobj, &mdev->ib_dev,
2702 IB_FLOW_ACTION_UNSPECIFIED);
2703 return 0;
2704
2705free_maction:
2706 kfree(maction);
2707 return ret;
2708}
2709
2710DECLARE_UVERBS_NAMED_METHOD(
2711 MLX5_IB_METHOD_CREATE_FLOW,
2712 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_HANDLE,
2713 UVERBS_OBJECT_FLOW,
2714 UVERBS_ACCESS_NEW,
2715 UA_MANDATORY),
2716 UVERBS_ATTR_PTR_IN(
2717 MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE,
2718 UVERBS_ATTR_SIZE(1, sizeof(struct mlx5_ib_match_params)),
2719 UA_MANDATORY,
2720 UA_ALLOC_AND_COPY),
2721 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_MATCHER,
2722 MLX5_IB_OBJECT_FLOW_MATCHER,
2723 UVERBS_ACCESS_READ,
2724 UA_MANDATORY),
2725 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_DEST_QP,
2726 UVERBS_OBJECT_QP,
2727 UVERBS_ACCESS_READ),
2728 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX,
2729 MLX5_IB_OBJECT_DEVX_OBJ,
2730 UVERBS_ACCESS_READ),
2731 UVERBS_ATTR_IDRS_ARR(MLX5_IB_ATTR_CREATE_FLOW_ARR_FLOW_ACTIONS,
2732 UVERBS_OBJECT_FLOW_ACTION,
2733 UVERBS_ACCESS_READ, 1,
2734 MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS,
2735 UA_OPTIONAL),
2736 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_FLOW_TAG,
2737 UVERBS_ATTR_TYPE(u32),
2738 UA_OPTIONAL),
2739 UVERBS_ATTR_IDRS_ARR(MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX,
2740 MLX5_IB_OBJECT_DEVX_OBJ,
2741 UVERBS_ACCESS_READ, 1, 1,
2742 UA_OPTIONAL),
2743 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET,
2744 UVERBS_ATTR_MIN_SIZE(sizeof(u32)),
2745 UA_OPTIONAL,
2746 UA_ALLOC_AND_COPY),
2747 UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_CREATE_FLOW_FLAGS,
2748 enum mlx5_ib_create_flow_flags,
2749 UA_OPTIONAL));
2750
2751DECLARE_UVERBS_NAMED_METHOD_DESTROY(
2752 MLX5_IB_METHOD_DESTROY_FLOW,
2753 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_HANDLE,
2754 UVERBS_OBJECT_FLOW,
2755 UVERBS_ACCESS_DESTROY,
2756 UA_MANDATORY));
2757
2758ADD_UVERBS_METHODS(mlx5_ib_fs,
2759 UVERBS_OBJECT_FLOW,
2760 &UVERBS_METHOD(MLX5_IB_METHOD_CREATE_FLOW),
2761 &UVERBS_METHOD(MLX5_IB_METHOD_DESTROY_FLOW));
2762
2763DECLARE_UVERBS_NAMED_METHOD(
2764 MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER,
2765 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_HANDLE,
2766 UVERBS_OBJECT_FLOW_ACTION,
2767 UVERBS_ACCESS_NEW,
2768 UA_MANDATORY),
2769 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM,
2770 UVERBS_ATTR_MIN_SIZE(MLX5_UN_SZ_BYTES(
2771 set_add_copy_action_in_auto)),
2772 UA_MANDATORY,
2773 UA_ALLOC_AND_COPY),
2774 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_FT_TYPE,
2775 enum mlx5_ib_uapi_flow_table_type,
2776 UA_MANDATORY));
2777
2778DECLARE_UVERBS_NAMED_METHOD(
2779 MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT,
2780 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_HANDLE,
2781 UVERBS_OBJECT_FLOW_ACTION,
2782 UVERBS_ACCESS_NEW,
2783 UA_MANDATORY),
2784 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF,
2785 UVERBS_ATTR_MIN_SIZE(1),
2786 UA_ALLOC_AND_COPY,
2787 UA_OPTIONAL),
2788 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_TYPE,
2789 enum mlx5_ib_uapi_flow_action_packet_reformat_type,
2790 UA_MANDATORY),
2791 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_FT_TYPE,
2792 enum mlx5_ib_uapi_flow_table_type,
2793 UA_MANDATORY));
2794
2795ADD_UVERBS_METHODS(
2796 mlx5_ib_flow_actions,
2797 UVERBS_OBJECT_FLOW_ACTION,
2798 &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER),
2799 &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT));
2800
2801DECLARE_UVERBS_NAMED_METHOD(
2802 MLX5_IB_METHOD_FLOW_MATCHER_CREATE,
2803 UVERBS_ATTR_IDR(MLX5_IB_ATTR_FLOW_MATCHER_CREATE_HANDLE,
2804 MLX5_IB_OBJECT_FLOW_MATCHER,
2805 UVERBS_ACCESS_NEW,
2806 UA_MANDATORY),
2807 UVERBS_ATTR_PTR_IN(
2808 MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK,
2809 UVERBS_ATTR_SIZE(1, sizeof(struct mlx5_ib_match_params)),
2810 UA_MANDATORY),
2811 UVERBS_ATTR_ENUM_IN(MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE,
2812 mlx5_ib_flow_type,
2813 UA_MANDATORY),
2814 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_FLOW_MATCHER_MATCH_CRITERIA,
2815 UVERBS_ATTR_TYPE(u8),
2816 UA_MANDATORY),
2817 UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS,
2818 enum ib_flow_flags,
2819 UA_OPTIONAL),
2820 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE,
2821 enum mlx5_ib_uapi_flow_table_type,
2822 UA_OPTIONAL));
2823
2824DECLARE_UVERBS_NAMED_METHOD_DESTROY(
2825 MLX5_IB_METHOD_FLOW_MATCHER_DESTROY,
2826 UVERBS_ATTR_IDR(MLX5_IB_ATTR_FLOW_MATCHER_DESTROY_HANDLE,
2827 MLX5_IB_OBJECT_FLOW_MATCHER,
2828 UVERBS_ACCESS_DESTROY,
2829 UA_MANDATORY));
2830
2831DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_FLOW_MATCHER,
2832 UVERBS_TYPE_ALLOC_IDR(flow_matcher_cleanup),
2833 &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_MATCHER_CREATE),
2834 &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_MATCHER_DESTROY));
2835
2836DECLARE_UVERBS_NAMED_METHOD(
2837 MLX5_IB_METHOD_STEERING_ANCHOR_CREATE,
2838 UVERBS_ATTR_IDR(MLX5_IB_ATTR_STEERING_ANCHOR_CREATE_HANDLE,
2839 MLX5_IB_OBJECT_STEERING_ANCHOR,
2840 UVERBS_ACCESS_NEW,
2841 UA_MANDATORY),
2842 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_STEERING_ANCHOR_FT_TYPE,
2843 enum mlx5_ib_uapi_flow_table_type,
2844 UA_MANDATORY),
2845 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_STEERING_ANCHOR_PRIORITY,
2846 UVERBS_ATTR_TYPE(u16),
2847 UA_MANDATORY),
2848 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_STEERING_ANCHOR_FT_ID,
2849 UVERBS_ATTR_TYPE(u32),
2850 UA_MANDATORY));
2851
2852DECLARE_UVERBS_NAMED_METHOD_DESTROY(
2853 MLX5_IB_METHOD_STEERING_ANCHOR_DESTROY,
2854 UVERBS_ATTR_IDR(MLX5_IB_ATTR_STEERING_ANCHOR_DESTROY_HANDLE,
2855 MLX5_IB_OBJECT_STEERING_ANCHOR,
2856 UVERBS_ACCESS_DESTROY,
2857 UA_MANDATORY));
2858
2859DECLARE_UVERBS_NAMED_OBJECT(
2860 MLX5_IB_OBJECT_STEERING_ANCHOR,
2861 UVERBS_TYPE_ALLOC_IDR(steering_anchor_cleanup),
2862 &UVERBS_METHOD(MLX5_IB_METHOD_STEERING_ANCHOR_CREATE),
2863 &UVERBS_METHOD(MLX5_IB_METHOD_STEERING_ANCHOR_DESTROY));
2864
2865const struct uapi_definition mlx5_ib_flow_defs[] = {
2866 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
2867 MLX5_IB_OBJECT_FLOW_MATCHER),
2868 UAPI_DEF_CHAIN_OBJ_TREE(
2869 UVERBS_OBJECT_FLOW,
2870 &mlx5_ib_fs),
2871 UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_FLOW_ACTION,
2872 &mlx5_ib_flow_actions),
2873 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
2874 MLX5_IB_OBJECT_STEERING_ANCHOR,
2875 UAPI_DEF_IS_OBJ_SUPPORTED(mlx5_ib_shared_ft_allowed)),
2876 {},
2877};
2878
2879static const struct ib_device_ops flow_ops = {
2880 .create_flow = mlx5_ib_create_flow,
2881 .destroy_flow = mlx5_ib_destroy_flow,
2882 .destroy_flow_action = mlx5_ib_destroy_flow_action,
2883};
2884
2885int mlx5_ib_fs_init(struct mlx5_ib_dev *dev)
2886{
2887 dev->flow_db = kzalloc(sizeof(*dev->flow_db), GFP_KERNEL);
2888
2889 if (!dev->flow_db)
2890 return -ENOMEM;
2891
2892 mutex_init(&dev->flow_db->lock);
2893
2894 ib_set_device_ops(&dev->ib_dev, &flow_ops);
2895 return 0;
2896}
1// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2/*
3 * Copyright (c) 2018, Mellanox Technologies inc. All rights reserved.
4 */
5
6#include <rdma/ib_user_verbs.h>
7#include <rdma/ib_verbs.h>
8#include <rdma/uverbs_types.h>
9#include <rdma/uverbs_ioctl.h>
10#include <rdma/uverbs_std_types.h>
11#include <rdma/mlx5_user_ioctl_cmds.h>
12#include <rdma/mlx5_user_ioctl_verbs.h>
13#include <rdma/ib_hdrs.h>
14#include <rdma/ib_umem.h>
15#include <linux/mlx5/driver.h>
16#include <linux/mlx5/fs.h>
17#include <linux/mlx5/fs_helpers.h>
18#include <linux/mlx5/eswitch.h>
19#include <net/inet_ecn.h>
20#include "mlx5_ib.h"
21#include "counters.h"
22#include "devx.h"
23#include "fs.h"
24
25#define UVERBS_MODULE_NAME mlx5_ib
26#include <rdma/uverbs_named_ioctl.h>
27
28enum {
29 MATCH_CRITERIA_ENABLE_OUTER_BIT,
30 MATCH_CRITERIA_ENABLE_MISC_BIT,
31 MATCH_CRITERIA_ENABLE_INNER_BIT,
32 MATCH_CRITERIA_ENABLE_MISC2_BIT
33};
34
35#define HEADER_IS_ZERO(match_criteria, headers) \
36 !(memchr_inv(MLX5_ADDR_OF(fte_match_param, match_criteria, headers), \
37 0, MLX5_FLD_SZ_BYTES(fte_match_param, headers))) \
38
39static u8 get_match_criteria_enable(u32 *match_criteria)
40{
41 u8 match_criteria_enable;
42
43 match_criteria_enable =
44 (!HEADER_IS_ZERO(match_criteria, outer_headers)) <<
45 MATCH_CRITERIA_ENABLE_OUTER_BIT;
46 match_criteria_enable |=
47 (!HEADER_IS_ZERO(match_criteria, misc_parameters)) <<
48 MATCH_CRITERIA_ENABLE_MISC_BIT;
49 match_criteria_enable |=
50 (!HEADER_IS_ZERO(match_criteria, inner_headers)) <<
51 MATCH_CRITERIA_ENABLE_INNER_BIT;
52 match_criteria_enable |=
53 (!HEADER_IS_ZERO(match_criteria, misc_parameters_2)) <<
54 MATCH_CRITERIA_ENABLE_MISC2_BIT;
55
56 return match_criteria_enable;
57}
58
59static int set_proto(void *outer_c, void *outer_v, u8 mask, u8 val)
60{
61 u8 entry_mask;
62 u8 entry_val;
63 int err = 0;
64
65 if (!mask)
66 goto out;
67
68 entry_mask = MLX5_GET(fte_match_set_lyr_2_4, outer_c,
69 ip_protocol);
70 entry_val = MLX5_GET(fte_match_set_lyr_2_4, outer_v,
71 ip_protocol);
72 if (!entry_mask) {
73 MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_protocol, mask);
74 MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_protocol, val);
75 goto out;
76 }
77 /* Don't override existing ip protocol */
78 if (mask != entry_mask || val != entry_val)
79 err = -EINVAL;
80out:
81 return err;
82}
83
84static void set_flow_label(void *misc_c, void *misc_v, u32 mask, u32 val,
85 bool inner)
86{
87 if (inner) {
88 MLX5_SET(fte_match_set_misc,
89 misc_c, inner_ipv6_flow_label, mask);
90 MLX5_SET(fte_match_set_misc,
91 misc_v, inner_ipv6_flow_label, val);
92 } else {
93 MLX5_SET(fte_match_set_misc,
94 misc_c, outer_ipv6_flow_label, mask);
95 MLX5_SET(fte_match_set_misc,
96 misc_v, outer_ipv6_flow_label, val);
97 }
98}
99
100static void set_tos(void *outer_c, void *outer_v, u8 mask, u8 val)
101{
102 MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_ecn, mask);
103 MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_ecn, val);
104 MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_dscp, mask >> 2);
105 MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_dscp, val >> 2);
106}
107
108static int check_mpls_supp_fields(u32 field_support, const __be32 *set_mask)
109{
110 if (MLX5_GET(fte_match_mpls, set_mask, mpls_label) &&
111 !(field_support & MLX5_FIELD_SUPPORT_MPLS_LABEL))
112 return -EOPNOTSUPP;
113
114 if (MLX5_GET(fte_match_mpls, set_mask, mpls_exp) &&
115 !(field_support & MLX5_FIELD_SUPPORT_MPLS_EXP))
116 return -EOPNOTSUPP;
117
118 if (MLX5_GET(fte_match_mpls, set_mask, mpls_s_bos) &&
119 !(field_support & MLX5_FIELD_SUPPORT_MPLS_S_BOS))
120 return -EOPNOTSUPP;
121
122 if (MLX5_GET(fte_match_mpls, set_mask, mpls_ttl) &&
123 !(field_support & MLX5_FIELD_SUPPORT_MPLS_TTL))
124 return -EOPNOTSUPP;
125
126 return 0;
127}
128
129#define LAST_ETH_FIELD vlan_tag
130#define LAST_IPV4_FIELD tos
131#define LAST_IPV6_FIELD traffic_class
132#define LAST_TCP_UDP_FIELD src_port
133#define LAST_TUNNEL_FIELD tunnel_id
134#define LAST_FLOW_TAG_FIELD tag_id
135#define LAST_DROP_FIELD size
136#define LAST_COUNTERS_FIELD counters
137
138/* Field is the last supported field */
139#define FIELDS_NOT_SUPPORTED(filter, field) \
140 memchr_inv((void *)&filter.field + sizeof(filter.field), 0, \
141 sizeof(filter) - offsetofend(typeof(filter), field))
142
143int parse_flow_flow_action(struct mlx5_ib_flow_action *maction,
144 bool is_egress,
145 struct mlx5_flow_act *action)
146{
147
148 switch (maction->ib_action.type) {
149 case IB_FLOW_ACTION_UNSPECIFIED:
150 if (maction->flow_action_raw.sub_type ==
151 MLX5_IB_FLOW_ACTION_MODIFY_HEADER) {
152 if (action->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
153 return -EINVAL;
154 action->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
155 action->modify_hdr =
156 maction->flow_action_raw.modify_hdr;
157 return 0;
158 }
159 if (maction->flow_action_raw.sub_type ==
160 MLX5_IB_FLOW_ACTION_DECAP) {
161 if (action->action & MLX5_FLOW_CONTEXT_ACTION_DECAP)
162 return -EINVAL;
163 action->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
164 return 0;
165 }
166 if (maction->flow_action_raw.sub_type ==
167 MLX5_IB_FLOW_ACTION_PACKET_REFORMAT) {
168 if (action->action &
169 MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT)
170 return -EINVAL;
171 action->action |=
172 MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT;
173 action->pkt_reformat =
174 maction->flow_action_raw.pkt_reformat;
175 return 0;
176 }
177 fallthrough;
178 default:
179 return -EOPNOTSUPP;
180 }
181}
182
183static int parse_flow_attr(struct mlx5_core_dev *mdev,
184 struct mlx5_flow_spec *spec,
185 const union ib_flow_spec *ib_spec,
186 const struct ib_flow_attr *flow_attr,
187 struct mlx5_flow_act *action, u32 prev_type)
188{
189 struct mlx5_flow_context *flow_context = &spec->flow_context;
190 u32 *match_c = spec->match_criteria;
191 u32 *match_v = spec->match_value;
192 void *misc_params_c = MLX5_ADDR_OF(fte_match_param, match_c,
193 misc_parameters);
194 void *misc_params_v = MLX5_ADDR_OF(fte_match_param, match_v,
195 misc_parameters);
196 void *misc_params2_c = MLX5_ADDR_OF(fte_match_param, match_c,
197 misc_parameters_2);
198 void *misc_params2_v = MLX5_ADDR_OF(fte_match_param, match_v,
199 misc_parameters_2);
200 void *headers_c;
201 void *headers_v;
202 int match_ipv;
203 int ret;
204
205 if (ib_spec->type & IB_FLOW_SPEC_INNER) {
206 headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
207 inner_headers);
208 headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
209 inner_headers);
210 match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
211 ft_field_support.inner_ip_version);
212 } else {
213 headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
214 outer_headers);
215 headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
216 outer_headers);
217 match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
218 ft_field_support.outer_ip_version);
219 }
220
221 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
222 case IB_FLOW_SPEC_ETH:
223 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
224 return -EOPNOTSUPP;
225
226 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
227 dmac_47_16),
228 ib_spec->eth.mask.dst_mac);
229 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
230 dmac_47_16),
231 ib_spec->eth.val.dst_mac);
232
233 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
234 smac_47_16),
235 ib_spec->eth.mask.src_mac);
236 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
237 smac_47_16),
238 ib_spec->eth.val.src_mac);
239
240 if (ib_spec->eth.mask.vlan_tag) {
241 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
242 cvlan_tag, 1);
243 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
244 cvlan_tag, 1);
245
246 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
247 first_vid, ntohs(ib_spec->eth.mask.vlan_tag));
248 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
249 first_vid, ntohs(ib_spec->eth.val.vlan_tag));
250
251 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
252 first_cfi,
253 ntohs(ib_spec->eth.mask.vlan_tag) >> 12);
254 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
255 first_cfi,
256 ntohs(ib_spec->eth.val.vlan_tag) >> 12);
257
258 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
259 first_prio,
260 ntohs(ib_spec->eth.mask.vlan_tag) >> 13);
261 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
262 first_prio,
263 ntohs(ib_spec->eth.val.vlan_tag) >> 13);
264 }
265 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
266 ethertype, ntohs(ib_spec->eth.mask.ether_type));
267 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
268 ethertype, ntohs(ib_spec->eth.val.ether_type));
269 break;
270 case IB_FLOW_SPEC_IPV4:
271 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
272 return -EOPNOTSUPP;
273
274 if (match_ipv) {
275 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
276 ip_version, 0xf);
277 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
278 ip_version, MLX5_FS_IPV4_VERSION);
279 } else {
280 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
281 ethertype, 0xffff);
282 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
283 ethertype, ETH_P_IP);
284 }
285
286 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
287 src_ipv4_src_ipv6.ipv4_layout.ipv4),
288 &ib_spec->ipv4.mask.src_ip,
289 sizeof(ib_spec->ipv4.mask.src_ip));
290 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
291 src_ipv4_src_ipv6.ipv4_layout.ipv4),
292 &ib_spec->ipv4.val.src_ip,
293 sizeof(ib_spec->ipv4.val.src_ip));
294 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
295 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
296 &ib_spec->ipv4.mask.dst_ip,
297 sizeof(ib_spec->ipv4.mask.dst_ip));
298 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
299 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
300 &ib_spec->ipv4.val.dst_ip,
301 sizeof(ib_spec->ipv4.val.dst_ip));
302
303 set_tos(headers_c, headers_v,
304 ib_spec->ipv4.mask.tos, ib_spec->ipv4.val.tos);
305
306 if (set_proto(headers_c, headers_v,
307 ib_spec->ipv4.mask.proto,
308 ib_spec->ipv4.val.proto))
309 return -EINVAL;
310 break;
311 case IB_FLOW_SPEC_IPV6:
312 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv6.mask, LAST_IPV6_FIELD))
313 return -EOPNOTSUPP;
314
315 if (match_ipv) {
316 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
317 ip_version, 0xf);
318 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
319 ip_version, MLX5_FS_IPV6_VERSION);
320 } else {
321 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
322 ethertype, 0xffff);
323 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
324 ethertype, ETH_P_IPV6);
325 }
326
327 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
328 src_ipv4_src_ipv6.ipv6_layout.ipv6),
329 &ib_spec->ipv6.mask.src_ip,
330 sizeof(ib_spec->ipv6.mask.src_ip));
331 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
332 src_ipv4_src_ipv6.ipv6_layout.ipv6),
333 &ib_spec->ipv6.val.src_ip,
334 sizeof(ib_spec->ipv6.val.src_ip));
335 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
336 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
337 &ib_spec->ipv6.mask.dst_ip,
338 sizeof(ib_spec->ipv6.mask.dst_ip));
339 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
340 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
341 &ib_spec->ipv6.val.dst_ip,
342 sizeof(ib_spec->ipv6.val.dst_ip));
343
344 set_tos(headers_c, headers_v,
345 ib_spec->ipv6.mask.traffic_class,
346 ib_spec->ipv6.val.traffic_class);
347
348 if (set_proto(headers_c, headers_v,
349 ib_spec->ipv6.mask.next_hdr,
350 ib_spec->ipv6.val.next_hdr))
351 return -EINVAL;
352
353 set_flow_label(misc_params_c, misc_params_v,
354 ntohl(ib_spec->ipv6.mask.flow_label),
355 ntohl(ib_spec->ipv6.val.flow_label),
356 ib_spec->type & IB_FLOW_SPEC_INNER);
357 break;
358 case IB_FLOW_SPEC_ESP:
359 return -EOPNOTSUPP;
360 case IB_FLOW_SPEC_TCP:
361 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask,
362 LAST_TCP_UDP_FIELD))
363 return -EOPNOTSUPP;
364
365 if (set_proto(headers_c, headers_v, 0xff, IPPROTO_TCP))
366 return -EINVAL;
367
368 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_sport,
369 ntohs(ib_spec->tcp_udp.mask.src_port));
370 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_sport,
371 ntohs(ib_spec->tcp_udp.val.src_port));
372
373 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_dport,
374 ntohs(ib_spec->tcp_udp.mask.dst_port));
375 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_dport,
376 ntohs(ib_spec->tcp_udp.val.dst_port));
377 break;
378 case IB_FLOW_SPEC_UDP:
379 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask,
380 LAST_TCP_UDP_FIELD))
381 return -EOPNOTSUPP;
382
383 if (set_proto(headers_c, headers_v, 0xff, IPPROTO_UDP))
384 return -EINVAL;
385
386 MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_sport,
387 ntohs(ib_spec->tcp_udp.mask.src_port));
388 MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_sport,
389 ntohs(ib_spec->tcp_udp.val.src_port));
390
391 MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_dport,
392 ntohs(ib_spec->tcp_udp.mask.dst_port));
393 MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport,
394 ntohs(ib_spec->tcp_udp.val.dst_port));
395 break;
396 case IB_FLOW_SPEC_GRE:
397 if (ib_spec->gre.mask.c_ks_res0_ver)
398 return -EOPNOTSUPP;
399
400 if (set_proto(headers_c, headers_v, 0xff, IPPROTO_GRE))
401 return -EINVAL;
402
403 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
404 0xff);
405 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
406 IPPROTO_GRE);
407
408 MLX5_SET(fte_match_set_misc, misc_params_c, gre_protocol,
409 ntohs(ib_spec->gre.mask.protocol));
410 MLX5_SET(fte_match_set_misc, misc_params_v, gre_protocol,
411 ntohs(ib_spec->gre.val.protocol));
412
413 memcpy(MLX5_ADDR_OF(fte_match_set_misc, misc_params_c,
414 gre_key.nvgre.hi),
415 &ib_spec->gre.mask.key,
416 sizeof(ib_spec->gre.mask.key));
417 memcpy(MLX5_ADDR_OF(fte_match_set_misc, misc_params_v,
418 gre_key.nvgre.hi),
419 &ib_spec->gre.val.key,
420 sizeof(ib_spec->gre.val.key));
421 break;
422 case IB_FLOW_SPEC_MPLS:
423 switch (prev_type) {
424 case IB_FLOW_SPEC_UDP:
425 if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
426 ft_field_support.outer_first_mpls_over_udp),
427 &ib_spec->mpls.mask.tag))
428 return -EOPNOTSUPP;
429
430 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
431 outer_first_mpls_over_udp),
432 &ib_spec->mpls.val.tag,
433 sizeof(ib_spec->mpls.val.tag));
434 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
435 outer_first_mpls_over_udp),
436 &ib_spec->mpls.mask.tag,
437 sizeof(ib_spec->mpls.mask.tag));
438 break;
439 case IB_FLOW_SPEC_GRE:
440 if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
441 ft_field_support.outer_first_mpls_over_gre),
442 &ib_spec->mpls.mask.tag))
443 return -EOPNOTSUPP;
444
445 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
446 outer_first_mpls_over_gre),
447 &ib_spec->mpls.val.tag,
448 sizeof(ib_spec->mpls.val.tag));
449 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
450 outer_first_mpls_over_gre),
451 &ib_spec->mpls.mask.tag,
452 sizeof(ib_spec->mpls.mask.tag));
453 break;
454 default:
455 if (ib_spec->type & IB_FLOW_SPEC_INNER) {
456 if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
457 ft_field_support.inner_first_mpls),
458 &ib_spec->mpls.mask.tag))
459 return -EOPNOTSUPP;
460
461 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
462 inner_first_mpls),
463 &ib_spec->mpls.val.tag,
464 sizeof(ib_spec->mpls.val.tag));
465 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
466 inner_first_mpls),
467 &ib_spec->mpls.mask.tag,
468 sizeof(ib_spec->mpls.mask.tag));
469 } else {
470 if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
471 ft_field_support.outer_first_mpls),
472 &ib_spec->mpls.mask.tag))
473 return -EOPNOTSUPP;
474
475 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
476 outer_first_mpls),
477 &ib_spec->mpls.val.tag,
478 sizeof(ib_spec->mpls.val.tag));
479 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
480 outer_first_mpls),
481 &ib_spec->mpls.mask.tag,
482 sizeof(ib_spec->mpls.mask.tag));
483 }
484 }
485 break;
486 case IB_FLOW_SPEC_VXLAN_TUNNEL:
487 if (FIELDS_NOT_SUPPORTED(ib_spec->tunnel.mask,
488 LAST_TUNNEL_FIELD))
489 return -EOPNOTSUPP;
490
491 MLX5_SET(fte_match_set_misc, misc_params_c, vxlan_vni,
492 ntohl(ib_spec->tunnel.mask.tunnel_id));
493 MLX5_SET(fte_match_set_misc, misc_params_v, vxlan_vni,
494 ntohl(ib_spec->tunnel.val.tunnel_id));
495 break;
496 case IB_FLOW_SPEC_ACTION_TAG:
497 if (FIELDS_NOT_SUPPORTED(ib_spec->flow_tag,
498 LAST_FLOW_TAG_FIELD))
499 return -EOPNOTSUPP;
500 if (ib_spec->flow_tag.tag_id >= BIT(24))
501 return -EINVAL;
502
503 flow_context->flow_tag = ib_spec->flow_tag.tag_id;
504 flow_context->flags |= FLOW_CONTEXT_HAS_TAG;
505 break;
506 case IB_FLOW_SPEC_ACTION_DROP:
507 if (FIELDS_NOT_SUPPORTED(ib_spec->drop,
508 LAST_DROP_FIELD))
509 return -EOPNOTSUPP;
510 action->action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
511 break;
512 case IB_FLOW_SPEC_ACTION_HANDLE:
513 ret = parse_flow_flow_action(to_mflow_act(ib_spec->action.act),
514 flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS, action);
515 if (ret)
516 return ret;
517 break;
518 case IB_FLOW_SPEC_ACTION_COUNT:
519 if (FIELDS_NOT_SUPPORTED(ib_spec->flow_count,
520 LAST_COUNTERS_FIELD))
521 return -EOPNOTSUPP;
522
523 /* for now support only one counters spec per flow */
524 if (action->action & MLX5_FLOW_CONTEXT_ACTION_COUNT)
525 return -EINVAL;
526
527 action->counters = ib_spec->flow_count.counters;
528 action->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
529 break;
530 default:
531 return -EINVAL;
532 }
533
534 return 0;
535}
536
537/* If a flow could catch both multicast and unicast packets,
538 * it won't fall into the multicast flow steering table and this rule
539 * could steal other multicast packets.
540 */
541static bool flow_is_multicast_only(const struct ib_flow_attr *ib_attr)
542{
543 union ib_flow_spec *flow_spec;
544
545 if (ib_attr->type != IB_FLOW_ATTR_NORMAL ||
546 ib_attr->num_of_specs < 1)
547 return false;
548
549 flow_spec = (union ib_flow_spec *)(ib_attr + 1);
550 if (flow_spec->type == IB_FLOW_SPEC_IPV4) {
551 struct ib_flow_spec_ipv4 *ipv4_spec;
552
553 ipv4_spec = (struct ib_flow_spec_ipv4 *)flow_spec;
554 if (ipv4_is_multicast(ipv4_spec->val.dst_ip))
555 return true;
556
557 return false;
558 }
559
560 if (flow_spec->type == IB_FLOW_SPEC_ETH) {
561 struct ib_flow_spec_eth *eth_spec;
562
563 eth_spec = (struct ib_flow_spec_eth *)flow_spec;
564 return is_multicast_ether_addr(eth_spec->mask.dst_mac) &&
565 is_multicast_ether_addr(eth_spec->val.dst_mac);
566 }
567
568 return false;
569}
570
571static bool is_valid_ethertype(struct mlx5_core_dev *mdev,
572 const struct ib_flow_attr *flow_attr,
573 bool check_inner)
574{
575 union ib_flow_spec *ib_spec = (union ib_flow_spec *)(flow_attr + 1);
576 int match_ipv = check_inner ?
577 MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
578 ft_field_support.inner_ip_version) :
579 MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
580 ft_field_support.outer_ip_version);
581 int inner_bit = check_inner ? IB_FLOW_SPEC_INNER : 0;
582 bool ipv4_spec_valid, ipv6_spec_valid;
583 unsigned int ip_spec_type = 0;
584 bool has_ethertype = false;
585 unsigned int spec_index;
586 bool mask_valid = true;
587 u16 eth_type = 0;
588 bool type_valid;
589
590 /* Validate that ethertype is correct */
591 for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
592 if ((ib_spec->type == (IB_FLOW_SPEC_ETH | inner_bit)) &&
593 ib_spec->eth.mask.ether_type) {
594 mask_valid = (ib_spec->eth.mask.ether_type ==
595 htons(0xffff));
596 has_ethertype = true;
597 eth_type = ntohs(ib_spec->eth.val.ether_type);
598 } else if ((ib_spec->type == (IB_FLOW_SPEC_IPV4 | inner_bit)) ||
599 (ib_spec->type == (IB_FLOW_SPEC_IPV6 | inner_bit))) {
600 ip_spec_type = ib_spec->type;
601 }
602 ib_spec = (void *)ib_spec + ib_spec->size;
603 }
604
605 type_valid = (!has_ethertype) || (!ip_spec_type);
606 if (!type_valid && mask_valid) {
607 ipv4_spec_valid = (eth_type == ETH_P_IP) &&
608 (ip_spec_type == (IB_FLOW_SPEC_IPV4 | inner_bit));
609 ipv6_spec_valid = (eth_type == ETH_P_IPV6) &&
610 (ip_spec_type == (IB_FLOW_SPEC_IPV6 | inner_bit));
611
612 type_valid = (ipv4_spec_valid) || (ipv6_spec_valid) ||
613 (((eth_type == ETH_P_MPLS_UC) ||
614 (eth_type == ETH_P_MPLS_MC)) && match_ipv);
615 }
616
617 return type_valid;
618}
619
620static bool is_valid_attr(struct mlx5_core_dev *mdev,
621 const struct ib_flow_attr *flow_attr)
622{
623 return is_valid_ethertype(mdev, flow_attr, false) &&
624 is_valid_ethertype(mdev, flow_attr, true);
625}
626
627static void put_flow_table(struct mlx5_ib_dev *dev,
628 struct mlx5_ib_flow_prio *prio, bool ft_added)
629{
630 prio->refcount -= !!ft_added;
631 if (!prio->refcount) {
632 mlx5_destroy_flow_table(prio->flow_table);
633 prio->flow_table = NULL;
634 }
635}
636
637static int mlx5_ib_destroy_flow(struct ib_flow *flow_id)
638{
639 struct mlx5_ib_flow_handler *handler = container_of(flow_id,
640 struct mlx5_ib_flow_handler,
641 ibflow);
642 struct mlx5_ib_flow_handler *iter, *tmp;
643 struct mlx5_ib_dev *dev = handler->dev;
644
645 mutex_lock(&dev->flow_db->lock);
646
647 list_for_each_entry_safe(iter, tmp, &handler->list, list) {
648 mlx5_del_flow_rules(iter->rule);
649 put_flow_table(dev, iter->prio, true);
650 list_del(&iter->list);
651 kfree(iter);
652 }
653
654 mlx5_del_flow_rules(handler->rule);
655 put_flow_table(dev, handler->prio, true);
656 mlx5_ib_counters_clear_description(handler->ibcounters);
657 mutex_unlock(&dev->flow_db->lock);
658 if (handler->flow_matcher)
659 atomic_dec(&handler->flow_matcher->usecnt);
660 kfree(handler);
661
662 return 0;
663}
664
665static int ib_prio_to_core_prio(unsigned int priority, bool dont_trap)
666{
667 priority *= 2;
668 if (!dont_trap)
669 priority++;
670 return priority;
671}
672
673enum flow_table_type {
674 MLX5_IB_FT_RX,
675 MLX5_IB_FT_TX
676};
677
678#define MLX5_FS_MAX_TYPES 6
679#define MLX5_FS_MAX_ENTRIES BIT(16)
680
681static bool mlx5_ib_shared_ft_allowed(struct ib_device *device)
682{
683 struct mlx5_ib_dev *dev = to_mdev(device);
684
685 return MLX5_CAP_GEN(dev->mdev, shared_object_to_user_object_allowed);
686}
687
688static struct mlx5_ib_flow_prio *_get_prio(struct mlx5_ib_dev *dev,
689 struct mlx5_flow_namespace *ns,
690 struct mlx5_ib_flow_prio *prio,
691 int priority,
692 int num_entries, int num_groups,
693 u32 flags)
694{
695 struct mlx5_flow_table_attr ft_attr = {};
696 struct mlx5_flow_table *ft;
697
698 ft_attr.prio = priority;
699 ft_attr.max_fte = num_entries;
700 ft_attr.flags = flags;
701 ft_attr.autogroup.max_num_groups = num_groups;
702 ft = mlx5_create_auto_grouped_flow_table(ns, &ft_attr);
703 if (IS_ERR(ft))
704 return ERR_CAST(ft);
705
706 prio->flow_table = ft;
707 prio->refcount = 0;
708 return prio;
709}
710
711static struct mlx5_ib_flow_prio *get_flow_table(struct mlx5_ib_dev *dev,
712 struct ib_flow_attr *flow_attr,
713 enum flow_table_type ft_type)
714{
715 bool dont_trap = flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP;
716 struct mlx5_flow_namespace *ns = NULL;
717 enum mlx5_flow_namespace_type fn_type;
718 struct mlx5_ib_flow_prio *prio;
719 struct mlx5_flow_table *ft;
720 int max_table_size;
721 int num_entries;
722 int num_groups;
723 bool esw_encap;
724 u32 flags = 0;
725 int priority;
726
727 max_table_size = BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
728 log_max_ft_size));
729 esw_encap = mlx5_eswitch_get_encap_mode(dev->mdev) !=
730 DEVLINK_ESWITCH_ENCAP_MODE_NONE;
731 switch (flow_attr->type) {
732 case IB_FLOW_ATTR_NORMAL:
733 if (flow_is_multicast_only(flow_attr) && !dont_trap)
734 priority = MLX5_IB_FLOW_MCAST_PRIO;
735 else
736 priority = ib_prio_to_core_prio(flow_attr->priority,
737 dont_trap);
738 if (ft_type == MLX5_IB_FT_RX) {
739 fn_type = MLX5_FLOW_NAMESPACE_BYPASS;
740 prio = &dev->flow_db->prios[priority];
741 if (!dev->is_rep && !esw_encap &&
742 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, decap))
743 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_DECAP;
744 if (!dev->is_rep && !esw_encap &&
745 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
746 reformat_l3_tunnel_to_l2))
747 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
748 } else {
749 max_table_size = BIT(MLX5_CAP_FLOWTABLE_NIC_TX(
750 dev->mdev, log_max_ft_size));
751 fn_type = MLX5_FLOW_NAMESPACE_EGRESS;
752 prio = &dev->flow_db->egress_prios[priority];
753 if (!dev->is_rep && !esw_encap &&
754 MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, reformat))
755 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
756 }
757 ns = mlx5_get_flow_namespace(dev->mdev, fn_type);
758 num_entries = MLX5_FS_MAX_ENTRIES;
759 num_groups = MLX5_FS_MAX_TYPES;
760 break;
761 case IB_FLOW_ATTR_ALL_DEFAULT:
762 case IB_FLOW_ATTR_MC_DEFAULT:
763 ns = mlx5_get_flow_namespace(dev->mdev,
764 MLX5_FLOW_NAMESPACE_LEFTOVERS);
765 build_leftovers_ft_param(&priority, &num_entries, &num_groups);
766 prio = &dev->flow_db->prios[MLX5_IB_FLOW_LEFTOVERS_PRIO];
767 break;
768 case IB_FLOW_ATTR_SNIFFER:
769 if (!MLX5_CAP_FLOWTABLE(dev->mdev,
770 allow_sniffer_and_nic_rx_shared_tir))
771 return ERR_PTR(-EOPNOTSUPP);
772
773 ns = mlx5_get_flow_namespace(
774 dev->mdev, ft_type == MLX5_IB_FT_RX ?
775 MLX5_FLOW_NAMESPACE_SNIFFER_RX :
776 MLX5_FLOW_NAMESPACE_SNIFFER_TX);
777
778 prio = &dev->flow_db->sniffer[ft_type];
779 priority = 0;
780 num_entries = 1;
781 num_groups = 1;
782 break;
783 default:
784 break;
785 }
786
787 if (!ns)
788 return ERR_PTR(-EOPNOTSUPP);
789
790 max_table_size = min_t(int, num_entries, max_table_size);
791
792 ft = prio->flow_table;
793 if (!ft)
794 return _get_prio(dev, ns, prio, priority, max_table_size,
795 num_groups, flags);
796
797 return prio;
798}
799
800enum {
801 RDMA_RX_ECN_OPCOUNTER_PRIO,
802 RDMA_RX_CNP_OPCOUNTER_PRIO,
803};
804
805enum {
806 RDMA_TX_CNP_OPCOUNTER_PRIO,
807};
808
809static int set_vhca_port_spec(struct mlx5_ib_dev *dev, u32 port_num,
810 struct mlx5_flow_spec *spec)
811{
812 if (!MLX5_CAP_FLOWTABLE_RDMA_RX(dev->mdev,
813 ft_field_support.source_vhca_port) ||
814 !MLX5_CAP_FLOWTABLE_RDMA_TX(dev->mdev,
815 ft_field_support.source_vhca_port))
816 return -EOPNOTSUPP;
817
818 MLX5_SET_TO_ONES(fte_match_param, &spec->match_criteria,
819 misc_parameters.source_vhca_port);
820 MLX5_SET(fte_match_param, &spec->match_value,
821 misc_parameters.source_vhca_port, port_num);
822
823 return 0;
824}
825
826static int set_ecn_ce_spec(struct mlx5_ib_dev *dev, u32 port_num,
827 struct mlx5_flow_spec *spec, int ipv)
828{
829 if (!MLX5_CAP_FLOWTABLE_RDMA_RX(dev->mdev,
830 ft_field_support.outer_ip_version))
831 return -EOPNOTSUPP;
832
833 if (mlx5_core_mp_enabled(dev->mdev) &&
834 set_vhca_port_spec(dev, port_num, spec))
835 return -EOPNOTSUPP;
836
837 MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
838 outer_headers.ip_ecn);
839 MLX5_SET(fte_match_param, spec->match_value, outer_headers.ip_ecn,
840 INET_ECN_CE);
841 MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
842 outer_headers.ip_version);
843 MLX5_SET(fte_match_param, spec->match_value, outer_headers.ip_version,
844 ipv);
845
846 spec->match_criteria_enable =
847 get_match_criteria_enable(spec->match_criteria);
848
849 return 0;
850}
851
852static int set_cnp_spec(struct mlx5_ib_dev *dev, u32 port_num,
853 struct mlx5_flow_spec *spec)
854{
855 if (mlx5_core_mp_enabled(dev->mdev) &&
856 set_vhca_port_spec(dev, port_num, spec))
857 return -EOPNOTSUPP;
858
859 MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
860 misc_parameters.bth_opcode);
861 MLX5_SET(fte_match_param, spec->match_value, misc_parameters.bth_opcode,
862 IB_BTH_OPCODE_CNP);
863
864 spec->match_criteria_enable =
865 get_match_criteria_enable(spec->match_criteria);
866
867 return 0;
868}
869
870int mlx5_ib_fs_add_op_fc(struct mlx5_ib_dev *dev, u32 port_num,
871 struct mlx5_ib_op_fc *opfc,
872 enum mlx5_ib_optional_counter_type type)
873{
874 enum mlx5_flow_namespace_type fn_type;
875 int priority, i, err, spec_num;
876 struct mlx5_flow_act flow_act = {};
877 struct mlx5_flow_destination dst;
878 struct mlx5_flow_namespace *ns;
879 struct mlx5_ib_flow_prio *prio;
880 struct mlx5_flow_spec *spec;
881
882 spec = kcalloc(MAX_OPFC_RULES, sizeof(*spec), GFP_KERNEL);
883 if (!spec)
884 return -ENOMEM;
885
886 switch (type) {
887 case MLX5_IB_OPCOUNTER_CC_RX_CE_PKTS:
888 if (set_ecn_ce_spec(dev, port_num, &spec[0],
889 MLX5_FS_IPV4_VERSION) ||
890 set_ecn_ce_spec(dev, port_num, &spec[1],
891 MLX5_FS_IPV6_VERSION)) {
892 err = -EOPNOTSUPP;
893 goto free;
894 }
895 spec_num = 2;
896 fn_type = MLX5_FLOW_NAMESPACE_RDMA_RX_COUNTERS;
897 priority = RDMA_RX_ECN_OPCOUNTER_PRIO;
898 break;
899
900 case MLX5_IB_OPCOUNTER_CC_RX_CNP_PKTS:
901 if (!MLX5_CAP_FLOWTABLE(dev->mdev,
902 ft_field_support_2_nic_receive_rdma.bth_opcode) ||
903 set_cnp_spec(dev, port_num, &spec[0])) {
904 err = -EOPNOTSUPP;
905 goto free;
906 }
907 spec_num = 1;
908 fn_type = MLX5_FLOW_NAMESPACE_RDMA_RX_COUNTERS;
909 priority = RDMA_RX_CNP_OPCOUNTER_PRIO;
910 break;
911
912 case MLX5_IB_OPCOUNTER_CC_TX_CNP_PKTS:
913 if (!MLX5_CAP_FLOWTABLE(dev->mdev,
914 ft_field_support_2_nic_transmit_rdma.bth_opcode) ||
915 set_cnp_spec(dev, port_num, &spec[0])) {
916 err = -EOPNOTSUPP;
917 goto free;
918 }
919 spec_num = 1;
920 fn_type = MLX5_FLOW_NAMESPACE_RDMA_TX_COUNTERS;
921 priority = RDMA_TX_CNP_OPCOUNTER_PRIO;
922 break;
923
924 default:
925 err = -EOPNOTSUPP;
926 goto free;
927 }
928
929 ns = mlx5_get_flow_namespace(dev->mdev, fn_type);
930 if (!ns) {
931 err = -EOPNOTSUPP;
932 goto free;
933 }
934
935 prio = &dev->flow_db->opfcs[type];
936 if (!prio->flow_table) {
937 prio = _get_prio(dev, ns, prio, priority,
938 dev->num_ports * MAX_OPFC_RULES, 1, 0);
939 if (IS_ERR(prio)) {
940 err = PTR_ERR(prio);
941 goto free;
942 }
943 }
944
945 dst.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
946 dst.counter_id = mlx5_fc_id(opfc->fc);
947
948 flow_act.action =
949 MLX5_FLOW_CONTEXT_ACTION_COUNT | MLX5_FLOW_CONTEXT_ACTION_ALLOW;
950
951 for (i = 0; i < spec_num; i++) {
952 opfc->rule[i] = mlx5_add_flow_rules(prio->flow_table, &spec[i],
953 &flow_act, &dst, 1);
954 if (IS_ERR(opfc->rule[i])) {
955 err = PTR_ERR(opfc->rule[i]);
956 goto del_rules;
957 }
958 }
959 prio->refcount += spec_num;
960 kfree(spec);
961
962 return 0;
963
964del_rules:
965 for (i -= 1; i >= 0; i--)
966 mlx5_del_flow_rules(opfc->rule[i]);
967 put_flow_table(dev, prio, false);
968free:
969 kfree(spec);
970 return err;
971}
972
973void mlx5_ib_fs_remove_op_fc(struct mlx5_ib_dev *dev,
974 struct mlx5_ib_op_fc *opfc,
975 enum mlx5_ib_optional_counter_type type)
976{
977 int i;
978
979 for (i = 0; i < MAX_OPFC_RULES && opfc->rule[i]; i++) {
980 mlx5_del_flow_rules(opfc->rule[i]);
981 put_flow_table(dev, &dev->flow_db->opfcs[type], true);
982 }
983}
984
985static void set_underlay_qp(struct mlx5_ib_dev *dev,
986 struct mlx5_flow_spec *spec,
987 u32 underlay_qpn)
988{
989 void *misc_params_c = MLX5_ADDR_OF(fte_match_param,
990 spec->match_criteria,
991 misc_parameters);
992 void *misc_params_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
993 misc_parameters);
994
995 if (underlay_qpn &&
996 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
997 ft_field_support.bth_dst_qp)) {
998 MLX5_SET(fte_match_set_misc,
999 misc_params_v, bth_dst_qp, underlay_qpn);
1000 MLX5_SET(fte_match_set_misc,
1001 misc_params_c, bth_dst_qp, 0xffffff);
1002 }
1003}
1004
1005static void mlx5_ib_set_rule_source_port(struct mlx5_ib_dev *dev,
1006 struct mlx5_flow_spec *spec,
1007 struct mlx5_eswitch_rep *rep)
1008{
1009 struct mlx5_eswitch *esw = dev->mdev->priv.eswitch;
1010 void *misc;
1011
1012 if (mlx5_eswitch_vport_match_metadata_enabled(esw)) {
1013 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1014 misc_parameters_2);
1015
1016 MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
1017 mlx5_eswitch_get_vport_metadata_for_match(rep->esw,
1018 rep->vport));
1019 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1020 misc_parameters_2);
1021
1022 MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
1023 mlx5_eswitch_get_vport_metadata_mask());
1024 } else {
1025 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1026 misc_parameters);
1027
1028 MLX5_SET(fte_match_set_misc, misc, source_port, rep->vport);
1029
1030 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1031 misc_parameters);
1032
1033 MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
1034 }
1035}
1036
1037static struct mlx5_ib_flow_handler *_create_flow_rule(struct mlx5_ib_dev *dev,
1038 struct mlx5_ib_flow_prio *ft_prio,
1039 const struct ib_flow_attr *flow_attr,
1040 struct mlx5_flow_destination *dst,
1041 u32 underlay_qpn,
1042 struct mlx5_ib_create_flow *ucmd)
1043{
1044 struct mlx5_flow_table *ft = ft_prio->flow_table;
1045 struct mlx5_ib_flow_handler *handler;
1046 struct mlx5_flow_act flow_act = {};
1047 struct mlx5_flow_spec *spec;
1048 struct mlx5_flow_destination dest_arr[2] = {};
1049 struct mlx5_flow_destination *rule_dst = dest_arr;
1050 const void *ib_flow = (const void *)flow_attr + sizeof(*flow_attr);
1051 unsigned int spec_index;
1052 u32 prev_type = 0;
1053 int err = 0;
1054 int dest_num = 0;
1055 bool is_egress = flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS;
1056
1057 if (!is_valid_attr(dev->mdev, flow_attr))
1058 return ERR_PTR(-EINVAL);
1059
1060 if (dev->is_rep && is_egress)
1061 return ERR_PTR(-EINVAL);
1062
1063 spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
1064 handler = kzalloc(sizeof(*handler), GFP_KERNEL);
1065 if (!handler || !spec) {
1066 err = -ENOMEM;
1067 goto free;
1068 }
1069
1070 INIT_LIST_HEAD(&handler->list);
1071
1072 for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
1073 err = parse_flow_attr(dev->mdev, spec,
1074 ib_flow, flow_attr, &flow_act,
1075 prev_type);
1076 if (err < 0)
1077 goto free;
1078
1079 prev_type = ((union ib_flow_spec *)ib_flow)->type;
1080 ib_flow += ((union ib_flow_spec *)ib_flow)->size;
1081 }
1082
1083 if (dst && !(flow_act.action & MLX5_FLOW_CONTEXT_ACTION_DROP)) {
1084 memcpy(&dest_arr[0], dst, sizeof(*dst));
1085 dest_num++;
1086 }
1087
1088 if (!flow_is_multicast_only(flow_attr))
1089 set_underlay_qp(dev, spec, underlay_qpn);
1090
1091 if (dev->is_rep && flow_attr->type != IB_FLOW_ATTR_SNIFFER) {
1092 struct mlx5_eswitch_rep *rep;
1093
1094 rep = dev->port[flow_attr->port - 1].rep;
1095 if (!rep) {
1096 err = -EINVAL;
1097 goto free;
1098 }
1099
1100 mlx5_ib_set_rule_source_port(dev, spec, rep);
1101 }
1102
1103 spec->match_criteria_enable = get_match_criteria_enable(spec->match_criteria);
1104
1105 if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
1106 struct mlx5_ib_mcounters *mcounters;
1107
1108 err = mlx5_ib_flow_counters_set_data(flow_act.counters, ucmd);
1109 if (err)
1110 goto free;
1111
1112 mcounters = to_mcounters(flow_act.counters);
1113 handler->ibcounters = flow_act.counters;
1114 dest_arr[dest_num].type =
1115 MLX5_FLOW_DESTINATION_TYPE_COUNTER;
1116 dest_arr[dest_num].counter_id =
1117 mlx5_fc_id(mcounters->hw_cntrs_hndl);
1118 dest_num++;
1119 }
1120
1121 if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_DROP) {
1122 if (!dest_num)
1123 rule_dst = NULL;
1124 } else {
1125 if (flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)
1126 flow_act.action |=
1127 MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO;
1128 if (is_egress)
1129 flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_ALLOW;
1130 else if (dest_num)
1131 flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1132 }
1133
1134 if ((spec->flow_context.flags & FLOW_CONTEXT_HAS_TAG) &&
1135 (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
1136 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT)) {
1137 mlx5_ib_warn(dev, "Flow tag %u and attribute type %x isn't allowed in leftovers\n",
1138 spec->flow_context.flow_tag, flow_attr->type);
1139 err = -EINVAL;
1140 goto free;
1141 }
1142 handler->rule = mlx5_add_flow_rules(ft, spec,
1143 &flow_act,
1144 rule_dst, dest_num);
1145
1146 if (IS_ERR(handler->rule)) {
1147 err = PTR_ERR(handler->rule);
1148 goto free;
1149 }
1150
1151 ft_prio->refcount++;
1152 handler->prio = ft_prio;
1153 handler->dev = dev;
1154
1155 ft_prio->flow_table = ft;
1156free:
1157 if (err && handler) {
1158 mlx5_ib_counters_clear_description(handler->ibcounters);
1159 kfree(handler);
1160 }
1161 kvfree(spec);
1162 return err ? ERR_PTR(err) : handler;
1163}
1164
1165static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev,
1166 struct mlx5_ib_flow_prio *ft_prio,
1167 const struct ib_flow_attr *flow_attr,
1168 struct mlx5_flow_destination *dst)
1169{
1170 return _create_flow_rule(dev, ft_prio, flow_attr, dst, 0, NULL);
1171}
1172
1173enum {
1174 LEFTOVERS_MC,
1175 LEFTOVERS_UC,
1176};
1177
1178static struct mlx5_ib_flow_handler *create_leftovers_rule(struct mlx5_ib_dev *dev,
1179 struct mlx5_ib_flow_prio *ft_prio,
1180 struct ib_flow_attr *flow_attr,
1181 struct mlx5_flow_destination *dst)
1182{
1183 struct mlx5_ib_flow_handler *handler_ucast = NULL;
1184 struct mlx5_ib_flow_handler *handler = NULL;
1185
1186 static struct {
1187 struct ib_flow_attr flow_attr;
1188 struct ib_flow_spec_eth eth_flow;
1189 } leftovers_specs[] = {
1190 [LEFTOVERS_MC] = {
1191 .flow_attr = {
1192 .num_of_specs = 1,
1193 .size = sizeof(leftovers_specs[0])
1194 },
1195 .eth_flow = {
1196 .type = IB_FLOW_SPEC_ETH,
1197 .size = sizeof(struct ib_flow_spec_eth),
1198 .mask = {.dst_mac = {0x1} },
1199 .val = {.dst_mac = {0x1} }
1200 }
1201 },
1202 [LEFTOVERS_UC] = {
1203 .flow_attr = {
1204 .num_of_specs = 1,
1205 .size = sizeof(leftovers_specs[0])
1206 },
1207 .eth_flow = {
1208 .type = IB_FLOW_SPEC_ETH,
1209 .size = sizeof(struct ib_flow_spec_eth),
1210 .mask = {.dst_mac = {0x1} },
1211 .val = {.dst_mac = {} }
1212 }
1213 }
1214 };
1215
1216 handler = create_flow_rule(dev, ft_prio,
1217 &leftovers_specs[LEFTOVERS_MC].flow_attr,
1218 dst);
1219 if (!IS_ERR(handler) &&
1220 flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT) {
1221 handler_ucast = create_flow_rule(dev, ft_prio,
1222 &leftovers_specs[LEFTOVERS_UC].flow_attr,
1223 dst);
1224 if (IS_ERR(handler_ucast)) {
1225 mlx5_del_flow_rules(handler->rule);
1226 ft_prio->refcount--;
1227 kfree(handler);
1228 handler = handler_ucast;
1229 } else {
1230 list_add(&handler_ucast->list, &handler->list);
1231 }
1232 }
1233
1234 return handler;
1235}
1236
1237static struct mlx5_ib_flow_handler *create_sniffer_rule(struct mlx5_ib_dev *dev,
1238 struct mlx5_ib_flow_prio *ft_rx,
1239 struct mlx5_ib_flow_prio *ft_tx,
1240 struct mlx5_flow_destination *dst)
1241{
1242 struct mlx5_ib_flow_handler *handler_rx;
1243 struct mlx5_ib_flow_handler *handler_tx;
1244 int err;
1245 static const struct ib_flow_attr flow_attr = {
1246 .num_of_specs = 0,
1247 .type = IB_FLOW_ATTR_SNIFFER,
1248 .size = sizeof(flow_attr)
1249 };
1250
1251 handler_rx = create_flow_rule(dev, ft_rx, &flow_attr, dst);
1252 if (IS_ERR(handler_rx)) {
1253 err = PTR_ERR(handler_rx);
1254 goto err;
1255 }
1256
1257 handler_tx = create_flow_rule(dev, ft_tx, &flow_attr, dst);
1258 if (IS_ERR(handler_tx)) {
1259 err = PTR_ERR(handler_tx);
1260 goto err_tx;
1261 }
1262
1263 list_add(&handler_tx->list, &handler_rx->list);
1264
1265 return handler_rx;
1266
1267err_tx:
1268 mlx5_del_flow_rules(handler_rx->rule);
1269 ft_rx->refcount--;
1270 kfree(handler_rx);
1271err:
1272 return ERR_PTR(err);
1273}
1274
1275static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp,
1276 struct ib_flow_attr *flow_attr,
1277 struct ib_udata *udata)
1278{
1279 struct mlx5_ib_dev *dev = to_mdev(qp->device);
1280 struct mlx5_ib_qp *mqp = to_mqp(qp);
1281 struct mlx5_ib_flow_handler *handler = NULL;
1282 struct mlx5_flow_destination *dst = NULL;
1283 struct mlx5_ib_flow_prio *ft_prio_tx = NULL;
1284 struct mlx5_ib_flow_prio *ft_prio;
1285 bool is_egress = flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS;
1286 struct mlx5_ib_create_flow *ucmd = NULL, ucmd_hdr;
1287 size_t min_ucmd_sz, required_ucmd_sz;
1288 int err;
1289 int underlay_qpn;
1290
1291 if (udata && udata->inlen) {
1292 min_ucmd_sz = offsetofend(struct mlx5_ib_create_flow, reserved);
1293 if (udata->inlen < min_ucmd_sz)
1294 return ERR_PTR(-EOPNOTSUPP);
1295
1296 err = ib_copy_from_udata(&ucmd_hdr, udata, min_ucmd_sz);
1297 if (err)
1298 return ERR_PTR(err);
1299
1300 /* currently supports only one counters data */
1301 if (ucmd_hdr.ncounters_data > 1)
1302 return ERR_PTR(-EINVAL);
1303
1304 required_ucmd_sz = min_ucmd_sz +
1305 sizeof(struct mlx5_ib_flow_counters_data) *
1306 ucmd_hdr.ncounters_data;
1307 if (udata->inlen > required_ucmd_sz &&
1308 !ib_is_udata_cleared(udata, required_ucmd_sz,
1309 udata->inlen - required_ucmd_sz))
1310 return ERR_PTR(-EOPNOTSUPP);
1311
1312 ucmd = kzalloc(required_ucmd_sz, GFP_KERNEL);
1313 if (!ucmd)
1314 return ERR_PTR(-ENOMEM);
1315
1316 err = ib_copy_from_udata(ucmd, udata, required_ucmd_sz);
1317 if (err)
1318 goto free_ucmd;
1319 }
1320
1321 if (flow_attr->priority > MLX5_IB_FLOW_LAST_PRIO) {
1322 err = -ENOMEM;
1323 goto free_ucmd;
1324 }
1325
1326 if (flow_attr->flags &
1327 ~(IB_FLOW_ATTR_FLAGS_DONT_TRAP | IB_FLOW_ATTR_FLAGS_EGRESS)) {
1328 err = -EINVAL;
1329 goto free_ucmd;
1330 }
1331
1332 if (is_egress &&
1333 (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
1334 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT)) {
1335 err = -EINVAL;
1336 goto free_ucmd;
1337 }
1338
1339 dst = kzalloc(sizeof(*dst), GFP_KERNEL);
1340 if (!dst) {
1341 err = -ENOMEM;
1342 goto free_ucmd;
1343 }
1344
1345 mutex_lock(&dev->flow_db->lock);
1346
1347 ft_prio = get_flow_table(dev, flow_attr,
1348 is_egress ? MLX5_IB_FT_TX : MLX5_IB_FT_RX);
1349 if (IS_ERR(ft_prio)) {
1350 err = PTR_ERR(ft_prio);
1351 goto unlock;
1352 }
1353 if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) {
1354 ft_prio_tx = get_flow_table(dev, flow_attr, MLX5_IB_FT_TX);
1355 if (IS_ERR(ft_prio_tx)) {
1356 err = PTR_ERR(ft_prio_tx);
1357 ft_prio_tx = NULL;
1358 goto destroy_ft;
1359 }
1360 }
1361
1362 if (is_egress) {
1363 dst->type = MLX5_FLOW_DESTINATION_TYPE_PORT;
1364 } else {
1365 dst->type = MLX5_FLOW_DESTINATION_TYPE_TIR;
1366 if (mqp->is_rss)
1367 dst->tir_num = mqp->rss_qp.tirn;
1368 else
1369 dst->tir_num = mqp->raw_packet_qp.rq.tirn;
1370 }
1371
1372 switch (flow_attr->type) {
1373 case IB_FLOW_ATTR_NORMAL:
1374 underlay_qpn = (mqp->flags & IB_QP_CREATE_SOURCE_QPN) ?
1375 mqp->underlay_qpn :
1376 0;
1377 handler = _create_flow_rule(dev, ft_prio, flow_attr, dst,
1378 underlay_qpn, ucmd);
1379 break;
1380 case IB_FLOW_ATTR_ALL_DEFAULT:
1381 case IB_FLOW_ATTR_MC_DEFAULT:
1382 handler = create_leftovers_rule(dev, ft_prio, flow_attr, dst);
1383 break;
1384 case IB_FLOW_ATTR_SNIFFER:
1385 handler = create_sniffer_rule(dev, ft_prio, ft_prio_tx, dst);
1386 break;
1387 default:
1388 err = -EINVAL;
1389 goto destroy_ft;
1390 }
1391
1392 if (IS_ERR(handler)) {
1393 err = PTR_ERR(handler);
1394 handler = NULL;
1395 goto destroy_ft;
1396 }
1397
1398 mutex_unlock(&dev->flow_db->lock);
1399 kfree(dst);
1400 kfree(ucmd);
1401
1402 return &handler->ibflow;
1403
1404destroy_ft:
1405 put_flow_table(dev, ft_prio, false);
1406 if (ft_prio_tx)
1407 put_flow_table(dev, ft_prio_tx, false);
1408unlock:
1409 mutex_unlock(&dev->flow_db->lock);
1410 kfree(dst);
1411free_ucmd:
1412 kfree(ucmd);
1413 return ERR_PTR(err);
1414}
1415
1416static struct mlx5_ib_flow_prio *
1417_get_flow_table(struct mlx5_ib_dev *dev, u16 user_priority,
1418 enum mlx5_flow_namespace_type ns_type,
1419 bool mcast)
1420{
1421 struct mlx5_flow_namespace *ns = NULL;
1422 struct mlx5_ib_flow_prio *prio = NULL;
1423 int max_table_size = 0;
1424 bool esw_encap;
1425 u32 flags = 0;
1426 int priority;
1427
1428 if (mcast)
1429 priority = MLX5_IB_FLOW_MCAST_PRIO;
1430 else
1431 priority = ib_prio_to_core_prio(user_priority, false);
1432
1433 esw_encap = mlx5_eswitch_get_encap_mode(dev->mdev) !=
1434 DEVLINK_ESWITCH_ENCAP_MODE_NONE;
1435 switch (ns_type) {
1436 case MLX5_FLOW_NAMESPACE_BYPASS:
1437 max_table_size = BIT(
1438 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, log_max_ft_size));
1439 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, decap) && !esw_encap)
1440 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_DECAP;
1441 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
1442 reformat_l3_tunnel_to_l2) &&
1443 !esw_encap)
1444 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
1445 break;
1446 case MLX5_FLOW_NAMESPACE_EGRESS:
1447 max_table_size = BIT(
1448 MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, log_max_ft_size));
1449 if (MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, reformat) &&
1450 !esw_encap)
1451 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
1452 break;
1453 case MLX5_FLOW_NAMESPACE_FDB_BYPASS:
1454 max_table_size = BIT(
1455 MLX5_CAP_ESW_FLOWTABLE_FDB(dev->mdev, log_max_ft_size));
1456 if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev->mdev, decap) && esw_encap)
1457 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_DECAP;
1458 if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev->mdev,
1459 reformat_l3_tunnel_to_l2) &&
1460 esw_encap)
1461 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
1462 priority = user_priority;
1463 break;
1464 case MLX5_FLOW_NAMESPACE_RDMA_RX:
1465 max_table_size = BIT(
1466 MLX5_CAP_FLOWTABLE_RDMA_RX(dev->mdev, log_max_ft_size));
1467 priority = user_priority;
1468 break;
1469 case MLX5_FLOW_NAMESPACE_RDMA_TX:
1470 max_table_size = BIT(
1471 MLX5_CAP_FLOWTABLE_RDMA_TX(dev->mdev, log_max_ft_size));
1472 priority = user_priority;
1473 break;
1474 default:
1475 break;
1476 }
1477
1478 max_table_size = min_t(int, max_table_size, MLX5_FS_MAX_ENTRIES);
1479
1480 ns = mlx5_get_flow_namespace(dev->mdev, ns_type);
1481 if (!ns)
1482 return ERR_PTR(-EOPNOTSUPP);
1483
1484 switch (ns_type) {
1485 case MLX5_FLOW_NAMESPACE_BYPASS:
1486 prio = &dev->flow_db->prios[priority];
1487 break;
1488 case MLX5_FLOW_NAMESPACE_EGRESS:
1489 prio = &dev->flow_db->egress_prios[priority];
1490 break;
1491 case MLX5_FLOW_NAMESPACE_FDB_BYPASS:
1492 prio = &dev->flow_db->fdb[priority];
1493 break;
1494 case MLX5_FLOW_NAMESPACE_RDMA_RX:
1495 prio = &dev->flow_db->rdma_rx[priority];
1496 break;
1497 case MLX5_FLOW_NAMESPACE_RDMA_TX:
1498 prio = &dev->flow_db->rdma_tx[priority];
1499 break;
1500 default: return ERR_PTR(-EINVAL);
1501 }
1502
1503 if (!prio)
1504 return ERR_PTR(-EINVAL);
1505
1506 if (prio->flow_table)
1507 return prio;
1508
1509 return _get_prio(dev, ns, prio, priority, max_table_size,
1510 MLX5_FS_MAX_TYPES, flags);
1511}
1512
1513static struct mlx5_ib_flow_handler *
1514_create_raw_flow_rule(struct mlx5_ib_dev *dev,
1515 struct mlx5_ib_flow_prio *ft_prio,
1516 struct mlx5_flow_destination *dst,
1517 struct mlx5_ib_flow_matcher *fs_matcher,
1518 struct mlx5_flow_context *flow_context,
1519 struct mlx5_flow_act *flow_act,
1520 void *cmd_in, int inlen,
1521 int dst_num)
1522{
1523 struct mlx5_ib_flow_handler *handler;
1524 struct mlx5_flow_spec *spec;
1525 struct mlx5_flow_table *ft = ft_prio->flow_table;
1526 int err = 0;
1527
1528 spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
1529 handler = kzalloc(sizeof(*handler), GFP_KERNEL);
1530 if (!handler || !spec) {
1531 err = -ENOMEM;
1532 goto free;
1533 }
1534
1535 INIT_LIST_HEAD(&handler->list);
1536
1537 memcpy(spec->match_value, cmd_in, inlen);
1538 memcpy(spec->match_criteria, fs_matcher->matcher_mask.match_params,
1539 fs_matcher->mask_len);
1540 spec->match_criteria_enable = fs_matcher->match_criteria_enable;
1541 spec->flow_context = *flow_context;
1542
1543 handler->rule = mlx5_add_flow_rules(ft, spec,
1544 flow_act, dst, dst_num);
1545
1546 if (IS_ERR(handler->rule)) {
1547 err = PTR_ERR(handler->rule);
1548 goto free;
1549 }
1550
1551 ft_prio->refcount++;
1552 handler->prio = ft_prio;
1553 handler->dev = dev;
1554 ft_prio->flow_table = ft;
1555
1556free:
1557 if (err)
1558 kfree(handler);
1559 kvfree(spec);
1560 return err ? ERR_PTR(err) : handler;
1561}
1562
1563static bool raw_fs_is_multicast(struct mlx5_ib_flow_matcher *fs_matcher,
1564 void *match_v)
1565{
1566 void *match_c;
1567 void *match_v_set_lyr_2_4, *match_c_set_lyr_2_4;
1568 void *dmac, *dmac_mask;
1569 void *ipv4, *ipv4_mask;
1570
1571 if (!(fs_matcher->match_criteria_enable &
1572 (1 << MATCH_CRITERIA_ENABLE_OUTER_BIT)))
1573 return false;
1574
1575 match_c = fs_matcher->matcher_mask.match_params;
1576 match_v_set_lyr_2_4 = MLX5_ADDR_OF(fte_match_param, match_v,
1577 outer_headers);
1578 match_c_set_lyr_2_4 = MLX5_ADDR_OF(fte_match_param, match_c,
1579 outer_headers);
1580
1581 dmac = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_v_set_lyr_2_4,
1582 dmac_47_16);
1583 dmac_mask = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_c_set_lyr_2_4,
1584 dmac_47_16);
1585
1586 if (is_multicast_ether_addr(dmac) &&
1587 is_multicast_ether_addr(dmac_mask))
1588 return true;
1589
1590 ipv4 = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_v_set_lyr_2_4,
1591 dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
1592
1593 ipv4_mask = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_c_set_lyr_2_4,
1594 dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
1595
1596 if (ipv4_is_multicast(*(__be32 *)(ipv4)) &&
1597 ipv4_is_multicast(*(__be32 *)(ipv4_mask)))
1598 return true;
1599
1600 return false;
1601}
1602
1603static struct mlx5_ib_flow_handler *raw_fs_rule_add(
1604 struct mlx5_ib_dev *dev, struct mlx5_ib_flow_matcher *fs_matcher,
1605 struct mlx5_flow_context *flow_context, struct mlx5_flow_act *flow_act,
1606 u32 counter_id, void *cmd_in, int inlen, int dest_id, int dest_type)
1607{
1608 struct mlx5_flow_destination *dst;
1609 struct mlx5_ib_flow_prio *ft_prio;
1610 struct mlx5_ib_flow_handler *handler;
1611 int dst_num = 0;
1612 bool mcast;
1613 int err;
1614
1615 if (fs_matcher->flow_type != MLX5_IB_FLOW_TYPE_NORMAL)
1616 return ERR_PTR(-EOPNOTSUPP);
1617
1618 if (fs_matcher->priority > MLX5_IB_FLOW_LAST_PRIO)
1619 return ERR_PTR(-ENOMEM);
1620
1621 dst = kcalloc(2, sizeof(*dst), GFP_KERNEL);
1622 if (!dst)
1623 return ERR_PTR(-ENOMEM);
1624
1625 mcast = raw_fs_is_multicast(fs_matcher, cmd_in);
1626 mutex_lock(&dev->flow_db->lock);
1627
1628 ft_prio = _get_flow_table(dev, fs_matcher->priority,
1629 fs_matcher->ns_type, mcast);
1630 if (IS_ERR(ft_prio)) {
1631 err = PTR_ERR(ft_prio);
1632 goto unlock;
1633 }
1634
1635 switch (dest_type) {
1636 case MLX5_FLOW_DESTINATION_TYPE_TIR:
1637 dst[dst_num].type = dest_type;
1638 dst[dst_num++].tir_num = dest_id;
1639 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1640 break;
1641 case MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE:
1642 dst[dst_num].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE_NUM;
1643 dst[dst_num++].ft_num = dest_id;
1644 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1645 break;
1646 case MLX5_FLOW_DESTINATION_TYPE_PORT:
1647 dst[dst_num++].type = MLX5_FLOW_DESTINATION_TYPE_PORT;
1648 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_ALLOW;
1649 break;
1650 default:
1651 break;
1652 }
1653
1654 if (flow_act->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
1655 dst[dst_num].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
1656 dst[dst_num].counter_id = counter_id;
1657 dst_num++;
1658 }
1659
1660 handler = _create_raw_flow_rule(dev, ft_prio, dst_num ? dst : NULL,
1661 fs_matcher, flow_context, flow_act,
1662 cmd_in, inlen, dst_num);
1663
1664 if (IS_ERR(handler)) {
1665 err = PTR_ERR(handler);
1666 goto destroy_ft;
1667 }
1668
1669 mutex_unlock(&dev->flow_db->lock);
1670 atomic_inc(&fs_matcher->usecnt);
1671 handler->flow_matcher = fs_matcher;
1672
1673 kfree(dst);
1674
1675 return handler;
1676
1677destroy_ft:
1678 put_flow_table(dev, ft_prio, false);
1679unlock:
1680 mutex_unlock(&dev->flow_db->lock);
1681 kfree(dst);
1682
1683 return ERR_PTR(err);
1684}
1685
1686static void destroy_flow_action_raw(struct mlx5_ib_flow_action *maction)
1687{
1688 switch (maction->flow_action_raw.sub_type) {
1689 case MLX5_IB_FLOW_ACTION_MODIFY_HEADER:
1690 mlx5_modify_header_dealloc(maction->flow_action_raw.dev->mdev,
1691 maction->flow_action_raw.modify_hdr);
1692 break;
1693 case MLX5_IB_FLOW_ACTION_PACKET_REFORMAT:
1694 mlx5_packet_reformat_dealloc(maction->flow_action_raw.dev->mdev,
1695 maction->flow_action_raw.pkt_reformat);
1696 break;
1697 case MLX5_IB_FLOW_ACTION_DECAP:
1698 break;
1699 default:
1700 break;
1701 }
1702}
1703
1704static int mlx5_ib_destroy_flow_action(struct ib_flow_action *action)
1705{
1706 struct mlx5_ib_flow_action *maction = to_mflow_act(action);
1707
1708 switch (action->type) {
1709 case IB_FLOW_ACTION_UNSPECIFIED:
1710 destroy_flow_action_raw(maction);
1711 break;
1712 default:
1713 WARN_ON(true);
1714 break;
1715 }
1716
1717 kfree(maction);
1718 return 0;
1719}
1720
1721static int
1722mlx5_ib_ft_type_to_namespace(enum mlx5_ib_uapi_flow_table_type table_type,
1723 enum mlx5_flow_namespace_type *namespace)
1724{
1725 switch (table_type) {
1726 case MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX:
1727 *namespace = MLX5_FLOW_NAMESPACE_BYPASS;
1728 break;
1729 case MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX:
1730 *namespace = MLX5_FLOW_NAMESPACE_EGRESS;
1731 break;
1732 case MLX5_IB_UAPI_FLOW_TABLE_TYPE_FDB:
1733 *namespace = MLX5_FLOW_NAMESPACE_FDB_BYPASS;
1734 break;
1735 case MLX5_IB_UAPI_FLOW_TABLE_TYPE_RDMA_RX:
1736 *namespace = MLX5_FLOW_NAMESPACE_RDMA_RX;
1737 break;
1738 case MLX5_IB_UAPI_FLOW_TABLE_TYPE_RDMA_TX:
1739 *namespace = MLX5_FLOW_NAMESPACE_RDMA_TX;
1740 break;
1741 default:
1742 return -EINVAL;
1743 }
1744
1745 return 0;
1746}
1747
1748static const struct uverbs_attr_spec mlx5_ib_flow_type[] = {
1749 [MLX5_IB_FLOW_TYPE_NORMAL] = {
1750 .type = UVERBS_ATTR_TYPE_PTR_IN,
1751 .u.ptr = {
1752 .len = sizeof(u16), /* data is priority */
1753 .min_len = sizeof(u16),
1754 }
1755 },
1756 [MLX5_IB_FLOW_TYPE_SNIFFER] = {
1757 .type = UVERBS_ATTR_TYPE_PTR_IN,
1758 UVERBS_ATTR_NO_DATA(),
1759 },
1760 [MLX5_IB_FLOW_TYPE_ALL_DEFAULT] = {
1761 .type = UVERBS_ATTR_TYPE_PTR_IN,
1762 UVERBS_ATTR_NO_DATA(),
1763 },
1764 [MLX5_IB_FLOW_TYPE_MC_DEFAULT] = {
1765 .type = UVERBS_ATTR_TYPE_PTR_IN,
1766 UVERBS_ATTR_NO_DATA(),
1767 },
1768};
1769
1770static bool is_flow_dest(void *obj, int *dest_id, int *dest_type)
1771{
1772 struct devx_obj *devx_obj = obj;
1773 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox, opcode);
1774
1775 switch (opcode) {
1776 case MLX5_CMD_OP_DESTROY_TIR:
1777 *dest_type = MLX5_FLOW_DESTINATION_TYPE_TIR;
1778 *dest_id = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox,
1779 obj_id);
1780 return true;
1781
1782 case MLX5_CMD_OP_DESTROY_FLOW_TABLE:
1783 *dest_type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
1784 *dest_id = MLX5_GET(destroy_flow_table_in, devx_obj->dinbox,
1785 table_id);
1786 return true;
1787 default:
1788 return false;
1789 }
1790}
1791
1792static int get_dests(struct uverbs_attr_bundle *attrs,
1793 struct mlx5_ib_flow_matcher *fs_matcher, int *dest_id,
1794 int *dest_type, struct ib_qp **qp, u32 *flags)
1795{
1796 bool dest_devx, dest_qp;
1797 void *devx_obj;
1798 int err;
1799
1800 dest_devx = uverbs_attr_is_valid(attrs,
1801 MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX);
1802 dest_qp = uverbs_attr_is_valid(attrs,
1803 MLX5_IB_ATTR_CREATE_FLOW_DEST_QP);
1804
1805 *flags = 0;
1806 err = uverbs_get_flags32(flags, attrs, MLX5_IB_ATTR_CREATE_FLOW_FLAGS,
1807 MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS |
1808 MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP);
1809 if (err)
1810 return err;
1811
1812 /* Both flags are not allowed */
1813 if (*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS &&
1814 *flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)
1815 return -EINVAL;
1816
1817 if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_BYPASS) {
1818 if (dest_devx && (dest_qp || *flags))
1819 return -EINVAL;
1820 else if (dest_qp && *flags)
1821 return -EINVAL;
1822 }
1823
1824 /* Allow only DEVX object, drop as dest for FDB */
1825 if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB_BYPASS &&
1826 !(dest_devx || (*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)))
1827 return -EINVAL;
1828
1829 /* Allow only DEVX object or QP as dest when inserting to RDMA_RX */
1830 if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX) &&
1831 ((!dest_devx && !dest_qp) || (dest_devx && dest_qp)))
1832 return -EINVAL;
1833
1834 *qp = NULL;
1835 if (dest_devx) {
1836 devx_obj =
1837 uverbs_attr_get_obj(attrs,
1838 MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX);
1839
1840 /* Verify that the given DEVX object is a flow
1841 * steering destination.
1842 */
1843 if (!is_flow_dest(devx_obj, dest_id, dest_type))
1844 return -EINVAL;
1845 /* Allow only flow table as dest when inserting to FDB or RDMA_RX */
1846 if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB_BYPASS ||
1847 fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX) &&
1848 *dest_type != MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE)
1849 return -EINVAL;
1850 } else if (dest_qp) {
1851 struct mlx5_ib_qp *mqp;
1852
1853 *qp = uverbs_attr_get_obj(attrs,
1854 MLX5_IB_ATTR_CREATE_FLOW_DEST_QP);
1855 if (IS_ERR(*qp))
1856 return PTR_ERR(*qp);
1857
1858 if ((*qp)->qp_type != IB_QPT_RAW_PACKET)
1859 return -EINVAL;
1860
1861 mqp = to_mqp(*qp);
1862 if (mqp->is_rss)
1863 *dest_id = mqp->rss_qp.tirn;
1864 else
1865 *dest_id = mqp->raw_packet_qp.rq.tirn;
1866 *dest_type = MLX5_FLOW_DESTINATION_TYPE_TIR;
1867 } else if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS ||
1868 fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_TX) &&
1869 !(*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)) {
1870 *dest_type = MLX5_FLOW_DESTINATION_TYPE_PORT;
1871 }
1872
1873 if (*dest_type == MLX5_FLOW_DESTINATION_TYPE_TIR &&
1874 (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS ||
1875 fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_TX))
1876 return -EINVAL;
1877
1878 return 0;
1879}
1880
1881static bool is_flow_counter(void *obj, u32 offset, u32 *counter_id)
1882{
1883 struct devx_obj *devx_obj = obj;
1884 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox, opcode);
1885
1886 if (opcode == MLX5_CMD_OP_DEALLOC_FLOW_COUNTER) {
1887
1888 if (offset && offset >= devx_obj->flow_counter_bulk_size)
1889 return false;
1890
1891 *counter_id = MLX5_GET(dealloc_flow_counter_in,
1892 devx_obj->dinbox,
1893 flow_counter_id);
1894 *counter_id += offset;
1895 return true;
1896 }
1897
1898 return false;
1899}
1900
1901#define MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS 2
1902static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
1903 struct uverbs_attr_bundle *attrs)
1904{
1905 struct mlx5_flow_context flow_context = {.flow_tag =
1906 MLX5_FS_DEFAULT_FLOW_TAG};
1907 u32 *offset_attr, offset = 0, counter_id = 0;
1908 int dest_id, dest_type = -1, inlen, len, ret, i;
1909 struct mlx5_ib_flow_handler *flow_handler;
1910 struct mlx5_ib_flow_matcher *fs_matcher;
1911 struct ib_uobject **arr_flow_actions;
1912 struct ib_uflow_resources *uflow_res;
1913 struct mlx5_flow_act flow_act = {};
1914 struct ib_qp *qp = NULL;
1915 void *devx_obj, *cmd_in;
1916 struct ib_uobject *uobj;
1917 struct mlx5_ib_dev *dev;
1918 u32 flags;
1919
1920 if (!capable(CAP_NET_RAW))
1921 return -EPERM;
1922
1923 fs_matcher = uverbs_attr_get_obj(attrs,
1924 MLX5_IB_ATTR_CREATE_FLOW_MATCHER);
1925 uobj = uverbs_attr_get_uobject(attrs, MLX5_IB_ATTR_CREATE_FLOW_HANDLE);
1926 dev = mlx5_udata_to_mdev(&attrs->driver_udata);
1927
1928 if (get_dests(attrs, fs_matcher, &dest_id, &dest_type, &qp, &flags))
1929 return -EINVAL;
1930
1931 if (flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS)
1932 flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_NS;
1933
1934 if (flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)
1935 flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
1936
1937 len = uverbs_attr_get_uobjs_arr(attrs,
1938 MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX, &arr_flow_actions);
1939 if (len) {
1940 devx_obj = arr_flow_actions[0]->object;
1941
1942 if (uverbs_attr_is_valid(attrs,
1943 MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET)) {
1944
1945 int num_offsets = uverbs_attr_ptr_get_array_size(
1946 attrs,
1947 MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET,
1948 sizeof(u32));
1949
1950 if (num_offsets != 1)
1951 return -EINVAL;
1952
1953 offset_attr = uverbs_attr_get_alloced_ptr(
1954 attrs,
1955 MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET);
1956 offset = *offset_attr;
1957 }
1958
1959 if (!is_flow_counter(devx_obj, offset, &counter_id))
1960 return -EINVAL;
1961
1962 flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
1963 }
1964
1965 cmd_in = uverbs_attr_get_alloced_ptr(
1966 attrs, MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);
1967 inlen = uverbs_attr_get_len(attrs,
1968 MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);
1969
1970 uflow_res = flow_resources_alloc(MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS);
1971 if (!uflow_res)
1972 return -ENOMEM;
1973
1974 len = uverbs_attr_get_uobjs_arr(attrs,
1975 MLX5_IB_ATTR_CREATE_FLOW_ARR_FLOW_ACTIONS, &arr_flow_actions);
1976 for (i = 0; i < len; i++) {
1977 struct mlx5_ib_flow_action *maction =
1978 to_mflow_act(arr_flow_actions[i]->object);
1979
1980 ret = parse_flow_flow_action(maction, false, &flow_act);
1981 if (ret)
1982 goto err_out;
1983 flow_resources_add(uflow_res, IB_FLOW_SPEC_ACTION_HANDLE,
1984 arr_flow_actions[i]->object);
1985 }
1986
1987 ret = uverbs_copy_from(&flow_context.flow_tag, attrs,
1988 MLX5_IB_ATTR_CREATE_FLOW_TAG);
1989 if (!ret) {
1990 if (flow_context.flow_tag >= BIT(24)) {
1991 ret = -EINVAL;
1992 goto err_out;
1993 }
1994 flow_context.flags |= FLOW_CONTEXT_HAS_TAG;
1995 }
1996
1997 flow_handler =
1998 raw_fs_rule_add(dev, fs_matcher, &flow_context, &flow_act,
1999 counter_id, cmd_in, inlen, dest_id, dest_type);
2000 if (IS_ERR(flow_handler)) {
2001 ret = PTR_ERR(flow_handler);
2002 goto err_out;
2003 }
2004
2005 ib_set_flow(uobj, &flow_handler->ibflow, qp, &dev->ib_dev, uflow_res);
2006
2007 return 0;
2008err_out:
2009 ib_uverbs_flow_resources_free(uflow_res);
2010 return ret;
2011}
2012
2013static int flow_matcher_cleanup(struct ib_uobject *uobject,
2014 enum rdma_remove_reason why,
2015 struct uverbs_attr_bundle *attrs)
2016{
2017 struct mlx5_ib_flow_matcher *obj = uobject->object;
2018
2019 if (atomic_read(&obj->usecnt))
2020 return -EBUSY;
2021
2022 kfree(obj);
2023 return 0;
2024}
2025
2026static int steering_anchor_create_ft(struct mlx5_ib_dev *dev,
2027 struct mlx5_ib_flow_prio *ft_prio,
2028 enum mlx5_flow_namespace_type ns_type)
2029{
2030 struct mlx5_flow_table_attr ft_attr = {};
2031 struct mlx5_flow_namespace *ns;
2032 struct mlx5_flow_table *ft;
2033
2034 if (ft_prio->anchor.ft)
2035 return 0;
2036
2037 ns = mlx5_get_flow_namespace(dev->mdev, ns_type);
2038 if (!ns)
2039 return -EOPNOTSUPP;
2040
2041 ft_attr.flags = MLX5_FLOW_TABLE_UNMANAGED;
2042 ft_attr.uid = MLX5_SHARED_RESOURCE_UID;
2043 ft_attr.prio = 0;
2044 ft_attr.max_fte = 2;
2045 ft_attr.level = 1;
2046
2047 ft = mlx5_create_flow_table(ns, &ft_attr);
2048 if (IS_ERR(ft))
2049 return PTR_ERR(ft);
2050
2051 ft_prio->anchor.ft = ft;
2052
2053 return 0;
2054}
2055
2056static void steering_anchor_destroy_ft(struct mlx5_ib_flow_prio *ft_prio)
2057{
2058 if (ft_prio->anchor.ft) {
2059 mlx5_destroy_flow_table(ft_prio->anchor.ft);
2060 ft_prio->anchor.ft = NULL;
2061 }
2062}
2063
2064static int
2065steering_anchor_create_fg_drop(struct mlx5_ib_flow_prio *ft_prio)
2066{
2067 int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
2068 struct mlx5_flow_group *fg;
2069 void *flow_group_in;
2070 int err = 0;
2071
2072 if (ft_prio->anchor.fg_drop)
2073 return 0;
2074
2075 flow_group_in = kvzalloc(inlen, GFP_KERNEL);
2076 if (!flow_group_in)
2077 return -ENOMEM;
2078
2079 MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 1);
2080 MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, 1);
2081
2082 fg = mlx5_create_flow_group(ft_prio->anchor.ft, flow_group_in);
2083 if (IS_ERR(fg)) {
2084 err = PTR_ERR(fg);
2085 goto out;
2086 }
2087
2088 ft_prio->anchor.fg_drop = fg;
2089
2090out:
2091 kvfree(flow_group_in);
2092
2093 return err;
2094}
2095
2096static void
2097steering_anchor_destroy_fg_drop(struct mlx5_ib_flow_prio *ft_prio)
2098{
2099 if (ft_prio->anchor.fg_drop) {
2100 mlx5_destroy_flow_group(ft_prio->anchor.fg_drop);
2101 ft_prio->anchor.fg_drop = NULL;
2102 }
2103}
2104
2105static int
2106steering_anchor_create_fg_goto_table(struct mlx5_ib_flow_prio *ft_prio)
2107{
2108 int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
2109 struct mlx5_flow_group *fg;
2110 void *flow_group_in;
2111 int err = 0;
2112
2113 if (ft_prio->anchor.fg_goto_table)
2114 return 0;
2115
2116 flow_group_in = kvzalloc(inlen, GFP_KERNEL);
2117 if (!flow_group_in)
2118 return -ENOMEM;
2119
2120 fg = mlx5_create_flow_group(ft_prio->anchor.ft, flow_group_in);
2121 if (IS_ERR(fg)) {
2122 err = PTR_ERR(fg);
2123 goto out;
2124 }
2125 ft_prio->anchor.fg_goto_table = fg;
2126
2127out:
2128 kvfree(flow_group_in);
2129
2130 return err;
2131}
2132
2133static void
2134steering_anchor_destroy_fg_goto_table(struct mlx5_ib_flow_prio *ft_prio)
2135{
2136 if (ft_prio->anchor.fg_goto_table) {
2137 mlx5_destroy_flow_group(ft_prio->anchor.fg_goto_table);
2138 ft_prio->anchor.fg_goto_table = NULL;
2139 }
2140}
2141
2142static int
2143steering_anchor_create_rule_drop(struct mlx5_ib_flow_prio *ft_prio)
2144{
2145 struct mlx5_flow_act flow_act = {};
2146 struct mlx5_flow_handle *handle;
2147
2148 if (ft_prio->anchor.rule_drop)
2149 return 0;
2150
2151 flow_act.fg = ft_prio->anchor.fg_drop;
2152 flow_act.action = MLX5_FLOW_CONTEXT_ACTION_DROP;
2153
2154 handle = mlx5_add_flow_rules(ft_prio->anchor.ft, NULL, &flow_act,
2155 NULL, 0);
2156 if (IS_ERR(handle))
2157 return PTR_ERR(handle);
2158
2159 ft_prio->anchor.rule_drop = handle;
2160
2161 return 0;
2162}
2163
2164static void steering_anchor_destroy_rule_drop(struct mlx5_ib_flow_prio *ft_prio)
2165{
2166 if (ft_prio->anchor.rule_drop) {
2167 mlx5_del_flow_rules(ft_prio->anchor.rule_drop);
2168 ft_prio->anchor.rule_drop = NULL;
2169 }
2170}
2171
2172static int
2173steering_anchor_create_rule_goto_table(struct mlx5_ib_flow_prio *ft_prio)
2174{
2175 struct mlx5_flow_destination dest = {};
2176 struct mlx5_flow_act flow_act = {};
2177 struct mlx5_flow_handle *handle;
2178
2179 if (ft_prio->anchor.rule_goto_table)
2180 return 0;
2181
2182 flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
2183 flow_act.flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
2184 flow_act.fg = ft_prio->anchor.fg_goto_table;
2185
2186 dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
2187 dest.ft = ft_prio->flow_table;
2188
2189 handle = mlx5_add_flow_rules(ft_prio->anchor.ft, NULL, &flow_act,
2190 &dest, 1);
2191 if (IS_ERR(handle))
2192 return PTR_ERR(handle);
2193
2194 ft_prio->anchor.rule_goto_table = handle;
2195
2196 return 0;
2197}
2198
2199static void
2200steering_anchor_destroy_rule_goto_table(struct mlx5_ib_flow_prio *ft_prio)
2201{
2202 if (ft_prio->anchor.rule_goto_table) {
2203 mlx5_del_flow_rules(ft_prio->anchor.rule_goto_table);
2204 ft_prio->anchor.rule_goto_table = NULL;
2205 }
2206}
2207
2208static int steering_anchor_create_res(struct mlx5_ib_dev *dev,
2209 struct mlx5_ib_flow_prio *ft_prio,
2210 enum mlx5_flow_namespace_type ns_type)
2211{
2212 int err;
2213
2214 err = steering_anchor_create_ft(dev, ft_prio, ns_type);
2215 if (err)
2216 return err;
2217
2218 err = steering_anchor_create_fg_drop(ft_prio);
2219 if (err)
2220 goto destroy_ft;
2221
2222 err = steering_anchor_create_fg_goto_table(ft_prio);
2223 if (err)
2224 goto destroy_fg_drop;
2225
2226 err = steering_anchor_create_rule_drop(ft_prio);
2227 if (err)
2228 goto destroy_fg_goto_table;
2229
2230 err = steering_anchor_create_rule_goto_table(ft_prio);
2231 if (err)
2232 goto destroy_rule_drop;
2233
2234 return 0;
2235
2236destroy_rule_drop:
2237 steering_anchor_destroy_rule_drop(ft_prio);
2238destroy_fg_goto_table:
2239 steering_anchor_destroy_fg_goto_table(ft_prio);
2240destroy_fg_drop:
2241 steering_anchor_destroy_fg_drop(ft_prio);
2242destroy_ft:
2243 steering_anchor_destroy_ft(ft_prio);
2244
2245 return err;
2246}
2247
2248static void mlx5_steering_anchor_destroy_res(struct mlx5_ib_flow_prio *ft_prio)
2249{
2250 steering_anchor_destroy_rule_goto_table(ft_prio);
2251 steering_anchor_destroy_rule_drop(ft_prio);
2252 steering_anchor_destroy_fg_goto_table(ft_prio);
2253 steering_anchor_destroy_fg_drop(ft_prio);
2254 steering_anchor_destroy_ft(ft_prio);
2255}
2256
2257static int steering_anchor_cleanup(struct ib_uobject *uobject,
2258 enum rdma_remove_reason why,
2259 struct uverbs_attr_bundle *attrs)
2260{
2261 struct mlx5_ib_steering_anchor *obj = uobject->object;
2262
2263 if (atomic_read(&obj->usecnt))
2264 return -EBUSY;
2265
2266 mutex_lock(&obj->dev->flow_db->lock);
2267 if (!--obj->ft_prio->anchor.rule_goto_table_ref)
2268 steering_anchor_destroy_rule_goto_table(obj->ft_prio);
2269
2270 put_flow_table(obj->dev, obj->ft_prio, true);
2271 mutex_unlock(&obj->dev->flow_db->lock);
2272
2273 kfree(obj);
2274 return 0;
2275}
2276
2277static void fs_cleanup_anchor(struct mlx5_ib_flow_prio *prio,
2278 int count)
2279{
2280 while (count--)
2281 mlx5_steering_anchor_destroy_res(&prio[count]);
2282}
2283
2284void mlx5_ib_fs_cleanup_anchor(struct mlx5_ib_dev *dev)
2285{
2286 fs_cleanup_anchor(dev->flow_db->prios, MLX5_IB_NUM_FLOW_FT);
2287 fs_cleanup_anchor(dev->flow_db->egress_prios, MLX5_IB_NUM_FLOW_FT);
2288 fs_cleanup_anchor(dev->flow_db->sniffer, MLX5_IB_NUM_SNIFFER_FTS);
2289 fs_cleanup_anchor(dev->flow_db->egress, MLX5_IB_NUM_EGRESS_FTS);
2290 fs_cleanup_anchor(dev->flow_db->fdb, MLX5_IB_NUM_FDB_FTS);
2291 fs_cleanup_anchor(dev->flow_db->rdma_rx, MLX5_IB_NUM_FLOW_FT);
2292 fs_cleanup_anchor(dev->flow_db->rdma_tx, MLX5_IB_NUM_FLOW_FT);
2293}
2294
2295static int mlx5_ib_matcher_ns(struct uverbs_attr_bundle *attrs,
2296 struct mlx5_ib_flow_matcher *obj)
2297{
2298 enum mlx5_ib_uapi_flow_table_type ft_type =
2299 MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX;
2300 u32 flags;
2301 int err;
2302
2303 /* New users should use MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE and older
2304 * users should switch to it. We leave this to not break userspace
2305 */
2306 if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE) &&
2307 uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS))
2308 return -EINVAL;
2309
2310 if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE)) {
2311 err = uverbs_get_const(&ft_type, attrs,
2312 MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE);
2313 if (err)
2314 return err;
2315
2316 err = mlx5_ib_ft_type_to_namespace(ft_type, &obj->ns_type);
2317 if (err)
2318 return err;
2319
2320 return 0;
2321 }
2322
2323 if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS)) {
2324 err = uverbs_get_flags32(&flags, attrs,
2325 MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS,
2326 IB_FLOW_ATTR_FLAGS_EGRESS);
2327 if (err)
2328 return err;
2329
2330 if (flags)
2331 return mlx5_ib_ft_type_to_namespace(
2332 MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX,
2333 &obj->ns_type);
2334 }
2335
2336 obj->ns_type = MLX5_FLOW_NAMESPACE_BYPASS;
2337
2338 return 0;
2339}
2340
2341static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_MATCHER_CREATE)(
2342 struct uverbs_attr_bundle *attrs)
2343{
2344 struct ib_uobject *uobj = uverbs_attr_get_uobject(
2345 attrs, MLX5_IB_ATTR_FLOW_MATCHER_CREATE_HANDLE);
2346 struct mlx5_ib_dev *dev = mlx5_udata_to_mdev(&attrs->driver_udata);
2347 struct mlx5_ib_flow_matcher *obj;
2348 int err;
2349
2350 obj = kzalloc(sizeof(struct mlx5_ib_flow_matcher), GFP_KERNEL);
2351 if (!obj)
2352 return -ENOMEM;
2353
2354 obj->mask_len = uverbs_attr_get_len(
2355 attrs, MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK);
2356 err = uverbs_copy_from(&obj->matcher_mask,
2357 attrs,
2358 MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK);
2359 if (err)
2360 goto end;
2361
2362 obj->flow_type = uverbs_attr_get_enum_id(
2363 attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE);
2364
2365 if (obj->flow_type == MLX5_IB_FLOW_TYPE_NORMAL) {
2366 err = uverbs_copy_from(&obj->priority,
2367 attrs,
2368 MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE);
2369 if (err)
2370 goto end;
2371 }
2372
2373 err = uverbs_copy_from(&obj->match_criteria_enable,
2374 attrs,
2375 MLX5_IB_ATTR_FLOW_MATCHER_MATCH_CRITERIA);
2376 if (err)
2377 goto end;
2378
2379 err = mlx5_ib_matcher_ns(attrs, obj);
2380 if (err)
2381 goto end;
2382
2383 if (obj->ns_type == MLX5_FLOW_NAMESPACE_FDB_BYPASS &&
2384 mlx5_eswitch_mode(dev->mdev) != MLX5_ESWITCH_OFFLOADS) {
2385 err = -EINVAL;
2386 goto end;
2387 }
2388
2389 uobj->object = obj;
2390 obj->mdev = dev->mdev;
2391 atomic_set(&obj->usecnt, 0);
2392 return 0;
2393
2394end:
2395 kfree(obj);
2396 return err;
2397}
2398
2399static int UVERBS_HANDLER(MLX5_IB_METHOD_STEERING_ANCHOR_CREATE)(
2400 struct uverbs_attr_bundle *attrs)
2401{
2402 struct ib_uobject *uobj = uverbs_attr_get_uobject(
2403 attrs, MLX5_IB_ATTR_STEERING_ANCHOR_CREATE_HANDLE);
2404 struct mlx5_ib_dev *dev = mlx5_udata_to_mdev(&attrs->driver_udata);
2405 enum mlx5_ib_uapi_flow_table_type ib_uapi_ft_type;
2406 enum mlx5_flow_namespace_type ns_type;
2407 struct mlx5_ib_steering_anchor *obj;
2408 struct mlx5_ib_flow_prio *ft_prio;
2409 u16 priority;
2410 u32 ft_id;
2411 int err;
2412
2413 if (!capable(CAP_NET_RAW))
2414 return -EPERM;
2415
2416 err = uverbs_get_const(&ib_uapi_ft_type, attrs,
2417 MLX5_IB_ATTR_STEERING_ANCHOR_FT_TYPE);
2418 if (err)
2419 return err;
2420
2421 err = mlx5_ib_ft_type_to_namespace(ib_uapi_ft_type, &ns_type);
2422 if (err)
2423 return err;
2424
2425 err = uverbs_copy_from(&priority, attrs,
2426 MLX5_IB_ATTR_STEERING_ANCHOR_PRIORITY);
2427 if (err)
2428 return err;
2429
2430 obj = kzalloc(sizeof(*obj), GFP_KERNEL);
2431 if (!obj)
2432 return -ENOMEM;
2433
2434 mutex_lock(&dev->flow_db->lock);
2435
2436 ft_prio = _get_flow_table(dev, priority, ns_type, 0);
2437 if (IS_ERR(ft_prio)) {
2438 err = PTR_ERR(ft_prio);
2439 goto free_obj;
2440 }
2441
2442 ft_prio->refcount++;
2443
2444 if (!ft_prio->anchor.rule_goto_table_ref) {
2445 err = steering_anchor_create_res(dev, ft_prio, ns_type);
2446 if (err)
2447 goto put_flow_table;
2448 }
2449
2450 ft_prio->anchor.rule_goto_table_ref++;
2451
2452 ft_id = mlx5_flow_table_id(ft_prio->anchor.ft);
2453
2454 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_STEERING_ANCHOR_FT_ID,
2455 &ft_id, sizeof(ft_id));
2456 if (err)
2457 goto destroy_res;
2458
2459 mutex_unlock(&dev->flow_db->lock);
2460
2461 uobj->object = obj;
2462 obj->dev = dev;
2463 obj->ft_prio = ft_prio;
2464 atomic_set(&obj->usecnt, 0);
2465
2466 return 0;
2467
2468destroy_res:
2469 --ft_prio->anchor.rule_goto_table_ref;
2470 mlx5_steering_anchor_destroy_res(ft_prio);
2471put_flow_table:
2472 put_flow_table(dev, ft_prio, true);
2473free_obj:
2474 mutex_unlock(&dev->flow_db->lock);
2475 kfree(obj);
2476
2477 return err;
2478}
2479
2480static struct ib_flow_action *
2481mlx5_ib_create_modify_header(struct mlx5_ib_dev *dev,
2482 enum mlx5_ib_uapi_flow_table_type ft_type,
2483 u8 num_actions, void *in)
2484{
2485 enum mlx5_flow_namespace_type namespace;
2486 struct mlx5_ib_flow_action *maction;
2487 int ret;
2488
2489 ret = mlx5_ib_ft_type_to_namespace(ft_type, &namespace);
2490 if (ret)
2491 return ERR_PTR(-EINVAL);
2492
2493 maction = kzalloc(sizeof(*maction), GFP_KERNEL);
2494 if (!maction)
2495 return ERR_PTR(-ENOMEM);
2496
2497 maction->flow_action_raw.modify_hdr =
2498 mlx5_modify_header_alloc(dev->mdev, namespace, num_actions, in);
2499
2500 if (IS_ERR(maction->flow_action_raw.modify_hdr)) {
2501 ret = PTR_ERR(maction->flow_action_raw.modify_hdr);
2502 kfree(maction);
2503 return ERR_PTR(ret);
2504 }
2505 maction->flow_action_raw.sub_type =
2506 MLX5_IB_FLOW_ACTION_MODIFY_HEADER;
2507 maction->flow_action_raw.dev = dev;
2508
2509 return &maction->ib_action;
2510}
2511
2512static bool mlx5_ib_modify_header_supported(struct mlx5_ib_dev *dev)
2513{
2514 return MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
2515 max_modify_header_actions) ||
2516 MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev,
2517 max_modify_header_actions) ||
2518 MLX5_CAP_FLOWTABLE_RDMA_TX(dev->mdev,
2519 max_modify_header_actions);
2520}
2521
2522static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER)(
2523 struct uverbs_attr_bundle *attrs)
2524{
2525 struct ib_uobject *uobj = uverbs_attr_get_uobject(
2526 attrs, MLX5_IB_ATTR_CREATE_MODIFY_HEADER_HANDLE);
2527 struct mlx5_ib_dev *mdev = mlx5_udata_to_mdev(&attrs->driver_udata);
2528 enum mlx5_ib_uapi_flow_table_type ft_type;
2529 struct ib_flow_action *action;
2530 int num_actions;
2531 void *in;
2532 int ret;
2533
2534 if (!mlx5_ib_modify_header_supported(mdev))
2535 return -EOPNOTSUPP;
2536
2537 in = uverbs_attr_get_alloced_ptr(attrs,
2538 MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM);
2539
2540 num_actions = uverbs_attr_ptr_get_array_size(
2541 attrs, MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM,
2542 MLX5_UN_SZ_BYTES(set_add_copy_action_in_auto));
2543 if (num_actions < 0)
2544 return num_actions;
2545
2546 ret = uverbs_get_const(&ft_type, attrs,
2547 MLX5_IB_ATTR_CREATE_MODIFY_HEADER_FT_TYPE);
2548 if (ret)
2549 return ret;
2550 action = mlx5_ib_create_modify_header(mdev, ft_type, num_actions, in);
2551 if (IS_ERR(action))
2552 return PTR_ERR(action);
2553
2554 uverbs_flow_action_fill_action(action, uobj, &mdev->ib_dev,
2555 IB_FLOW_ACTION_UNSPECIFIED);
2556
2557 return 0;
2558}
2559
2560static bool mlx5_ib_flow_action_packet_reformat_valid(struct mlx5_ib_dev *ibdev,
2561 u8 packet_reformat_type,
2562 u8 ft_type)
2563{
2564 switch (packet_reformat_type) {
2565 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL:
2566 if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX)
2567 return MLX5_CAP_FLOWTABLE(ibdev->mdev,
2568 encap_general_header);
2569 break;
2570 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L3_TUNNEL:
2571 if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX)
2572 return MLX5_CAP_FLOWTABLE_NIC_TX(ibdev->mdev,
2573 reformat_l2_to_l3_tunnel);
2574 break;
2575 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L3_TUNNEL_TO_L2:
2576 if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX)
2577 return MLX5_CAP_FLOWTABLE_NIC_RX(ibdev->mdev,
2578 reformat_l3_tunnel_to_l2);
2579 break;
2580 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2:
2581 if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX)
2582 return MLX5_CAP_FLOWTABLE_NIC_RX(ibdev->mdev, decap);
2583 break;
2584 default:
2585 break;
2586 }
2587
2588 return false;
2589}
2590
2591static int mlx5_ib_dv_to_prm_packet_reforamt_type(u8 dv_prt, u8 *prm_prt)
2592{
2593 switch (dv_prt) {
2594 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL:
2595 *prm_prt = MLX5_REFORMAT_TYPE_L2_TO_L2_TUNNEL;
2596 break;
2597 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L3_TUNNEL_TO_L2:
2598 *prm_prt = MLX5_REFORMAT_TYPE_L3_TUNNEL_TO_L2;
2599 break;
2600 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L3_TUNNEL:
2601 *prm_prt = MLX5_REFORMAT_TYPE_L2_TO_L3_TUNNEL;
2602 break;
2603 default:
2604 return -EINVAL;
2605 }
2606
2607 return 0;
2608}
2609
2610static int mlx5_ib_flow_action_create_packet_reformat_ctx(
2611 struct mlx5_ib_dev *dev,
2612 struct mlx5_ib_flow_action *maction,
2613 u8 ft_type, u8 dv_prt,
2614 void *in, size_t len)
2615{
2616 struct mlx5_pkt_reformat_params reformat_params;
2617 enum mlx5_flow_namespace_type namespace;
2618 u8 prm_prt;
2619 int ret;
2620
2621 ret = mlx5_ib_ft_type_to_namespace(ft_type, &namespace);
2622 if (ret)
2623 return ret;
2624
2625 ret = mlx5_ib_dv_to_prm_packet_reforamt_type(dv_prt, &prm_prt);
2626 if (ret)
2627 return ret;
2628
2629 memset(&reformat_params, 0, sizeof(reformat_params));
2630 reformat_params.type = prm_prt;
2631 reformat_params.size = len;
2632 reformat_params.data = in;
2633 maction->flow_action_raw.pkt_reformat =
2634 mlx5_packet_reformat_alloc(dev->mdev, &reformat_params,
2635 namespace);
2636 if (IS_ERR(maction->flow_action_raw.pkt_reformat)) {
2637 ret = PTR_ERR(maction->flow_action_raw.pkt_reformat);
2638 return ret;
2639 }
2640
2641 maction->flow_action_raw.sub_type =
2642 MLX5_IB_FLOW_ACTION_PACKET_REFORMAT;
2643 maction->flow_action_raw.dev = dev;
2644
2645 return 0;
2646}
2647
2648static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT)(
2649 struct uverbs_attr_bundle *attrs)
2650{
2651 struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
2652 MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_HANDLE);
2653 struct mlx5_ib_dev *mdev = mlx5_udata_to_mdev(&attrs->driver_udata);
2654 enum mlx5_ib_uapi_flow_action_packet_reformat_type dv_prt;
2655 enum mlx5_ib_uapi_flow_table_type ft_type;
2656 struct mlx5_ib_flow_action *maction;
2657 int ret;
2658
2659 ret = uverbs_get_const(&ft_type, attrs,
2660 MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_FT_TYPE);
2661 if (ret)
2662 return ret;
2663
2664 ret = uverbs_get_const(&dv_prt, attrs,
2665 MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_TYPE);
2666 if (ret)
2667 return ret;
2668
2669 if (!mlx5_ib_flow_action_packet_reformat_valid(mdev, dv_prt, ft_type))
2670 return -EOPNOTSUPP;
2671
2672 maction = kzalloc(sizeof(*maction), GFP_KERNEL);
2673 if (!maction)
2674 return -ENOMEM;
2675
2676 if (dv_prt ==
2677 MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2) {
2678 maction->flow_action_raw.sub_type =
2679 MLX5_IB_FLOW_ACTION_DECAP;
2680 maction->flow_action_raw.dev = mdev;
2681 } else {
2682 void *in;
2683 int len;
2684
2685 in = uverbs_attr_get_alloced_ptr(attrs,
2686 MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF);
2687 if (IS_ERR(in)) {
2688 ret = PTR_ERR(in);
2689 goto free_maction;
2690 }
2691
2692 len = uverbs_attr_get_len(attrs,
2693 MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF);
2694
2695 ret = mlx5_ib_flow_action_create_packet_reformat_ctx(mdev,
2696 maction, ft_type, dv_prt, in, len);
2697 if (ret)
2698 goto free_maction;
2699 }
2700
2701 uverbs_flow_action_fill_action(&maction->ib_action, uobj, &mdev->ib_dev,
2702 IB_FLOW_ACTION_UNSPECIFIED);
2703 return 0;
2704
2705free_maction:
2706 kfree(maction);
2707 return ret;
2708}
2709
2710DECLARE_UVERBS_NAMED_METHOD(
2711 MLX5_IB_METHOD_CREATE_FLOW,
2712 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_HANDLE,
2713 UVERBS_OBJECT_FLOW,
2714 UVERBS_ACCESS_NEW,
2715 UA_MANDATORY),
2716 UVERBS_ATTR_PTR_IN(
2717 MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE,
2718 UVERBS_ATTR_SIZE(1, sizeof(struct mlx5_ib_match_params)),
2719 UA_MANDATORY,
2720 UA_ALLOC_AND_COPY),
2721 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_MATCHER,
2722 MLX5_IB_OBJECT_FLOW_MATCHER,
2723 UVERBS_ACCESS_READ,
2724 UA_MANDATORY),
2725 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_DEST_QP,
2726 UVERBS_OBJECT_QP,
2727 UVERBS_ACCESS_READ),
2728 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX,
2729 MLX5_IB_OBJECT_DEVX_OBJ,
2730 UVERBS_ACCESS_READ),
2731 UVERBS_ATTR_IDRS_ARR(MLX5_IB_ATTR_CREATE_FLOW_ARR_FLOW_ACTIONS,
2732 UVERBS_OBJECT_FLOW_ACTION,
2733 UVERBS_ACCESS_READ, 1,
2734 MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS,
2735 UA_OPTIONAL),
2736 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_FLOW_TAG,
2737 UVERBS_ATTR_TYPE(u32),
2738 UA_OPTIONAL),
2739 UVERBS_ATTR_IDRS_ARR(MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX,
2740 MLX5_IB_OBJECT_DEVX_OBJ,
2741 UVERBS_ACCESS_READ, 1, 1,
2742 UA_OPTIONAL),
2743 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET,
2744 UVERBS_ATTR_MIN_SIZE(sizeof(u32)),
2745 UA_OPTIONAL,
2746 UA_ALLOC_AND_COPY),
2747 UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_CREATE_FLOW_FLAGS,
2748 enum mlx5_ib_create_flow_flags,
2749 UA_OPTIONAL));
2750
2751DECLARE_UVERBS_NAMED_METHOD_DESTROY(
2752 MLX5_IB_METHOD_DESTROY_FLOW,
2753 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_HANDLE,
2754 UVERBS_OBJECT_FLOW,
2755 UVERBS_ACCESS_DESTROY,
2756 UA_MANDATORY));
2757
2758ADD_UVERBS_METHODS(mlx5_ib_fs,
2759 UVERBS_OBJECT_FLOW,
2760 &UVERBS_METHOD(MLX5_IB_METHOD_CREATE_FLOW),
2761 &UVERBS_METHOD(MLX5_IB_METHOD_DESTROY_FLOW));
2762
2763DECLARE_UVERBS_NAMED_METHOD(
2764 MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER,
2765 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_HANDLE,
2766 UVERBS_OBJECT_FLOW_ACTION,
2767 UVERBS_ACCESS_NEW,
2768 UA_MANDATORY),
2769 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM,
2770 UVERBS_ATTR_MIN_SIZE(MLX5_UN_SZ_BYTES(
2771 set_add_copy_action_in_auto)),
2772 UA_MANDATORY,
2773 UA_ALLOC_AND_COPY),
2774 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_FT_TYPE,
2775 enum mlx5_ib_uapi_flow_table_type,
2776 UA_MANDATORY));
2777
2778DECLARE_UVERBS_NAMED_METHOD(
2779 MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT,
2780 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_HANDLE,
2781 UVERBS_OBJECT_FLOW_ACTION,
2782 UVERBS_ACCESS_NEW,
2783 UA_MANDATORY),
2784 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF,
2785 UVERBS_ATTR_MIN_SIZE(1),
2786 UA_ALLOC_AND_COPY,
2787 UA_OPTIONAL),
2788 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_TYPE,
2789 enum mlx5_ib_uapi_flow_action_packet_reformat_type,
2790 UA_MANDATORY),
2791 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_FT_TYPE,
2792 enum mlx5_ib_uapi_flow_table_type,
2793 UA_MANDATORY));
2794
2795ADD_UVERBS_METHODS(
2796 mlx5_ib_flow_actions,
2797 UVERBS_OBJECT_FLOW_ACTION,
2798 &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER),
2799 &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT));
2800
2801DECLARE_UVERBS_NAMED_METHOD(
2802 MLX5_IB_METHOD_FLOW_MATCHER_CREATE,
2803 UVERBS_ATTR_IDR(MLX5_IB_ATTR_FLOW_MATCHER_CREATE_HANDLE,
2804 MLX5_IB_OBJECT_FLOW_MATCHER,
2805 UVERBS_ACCESS_NEW,
2806 UA_MANDATORY),
2807 UVERBS_ATTR_PTR_IN(
2808 MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK,
2809 UVERBS_ATTR_SIZE(1, sizeof(struct mlx5_ib_match_params)),
2810 UA_MANDATORY),
2811 UVERBS_ATTR_ENUM_IN(MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE,
2812 mlx5_ib_flow_type,
2813 UA_MANDATORY),
2814 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_FLOW_MATCHER_MATCH_CRITERIA,
2815 UVERBS_ATTR_TYPE(u8),
2816 UA_MANDATORY),
2817 UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS,
2818 enum ib_flow_flags,
2819 UA_OPTIONAL),
2820 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE,
2821 enum mlx5_ib_uapi_flow_table_type,
2822 UA_OPTIONAL));
2823
2824DECLARE_UVERBS_NAMED_METHOD_DESTROY(
2825 MLX5_IB_METHOD_FLOW_MATCHER_DESTROY,
2826 UVERBS_ATTR_IDR(MLX5_IB_ATTR_FLOW_MATCHER_DESTROY_HANDLE,
2827 MLX5_IB_OBJECT_FLOW_MATCHER,
2828 UVERBS_ACCESS_DESTROY,
2829 UA_MANDATORY));
2830
2831DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_FLOW_MATCHER,
2832 UVERBS_TYPE_ALLOC_IDR(flow_matcher_cleanup),
2833 &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_MATCHER_CREATE),
2834 &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_MATCHER_DESTROY));
2835
2836DECLARE_UVERBS_NAMED_METHOD(
2837 MLX5_IB_METHOD_STEERING_ANCHOR_CREATE,
2838 UVERBS_ATTR_IDR(MLX5_IB_ATTR_STEERING_ANCHOR_CREATE_HANDLE,
2839 MLX5_IB_OBJECT_STEERING_ANCHOR,
2840 UVERBS_ACCESS_NEW,
2841 UA_MANDATORY),
2842 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_STEERING_ANCHOR_FT_TYPE,
2843 enum mlx5_ib_uapi_flow_table_type,
2844 UA_MANDATORY),
2845 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_STEERING_ANCHOR_PRIORITY,
2846 UVERBS_ATTR_TYPE(u16),
2847 UA_MANDATORY),
2848 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_STEERING_ANCHOR_FT_ID,
2849 UVERBS_ATTR_TYPE(u32),
2850 UA_MANDATORY));
2851
2852DECLARE_UVERBS_NAMED_METHOD_DESTROY(
2853 MLX5_IB_METHOD_STEERING_ANCHOR_DESTROY,
2854 UVERBS_ATTR_IDR(MLX5_IB_ATTR_STEERING_ANCHOR_DESTROY_HANDLE,
2855 MLX5_IB_OBJECT_STEERING_ANCHOR,
2856 UVERBS_ACCESS_DESTROY,
2857 UA_MANDATORY));
2858
2859DECLARE_UVERBS_NAMED_OBJECT(
2860 MLX5_IB_OBJECT_STEERING_ANCHOR,
2861 UVERBS_TYPE_ALLOC_IDR(steering_anchor_cleanup),
2862 &UVERBS_METHOD(MLX5_IB_METHOD_STEERING_ANCHOR_CREATE),
2863 &UVERBS_METHOD(MLX5_IB_METHOD_STEERING_ANCHOR_DESTROY));
2864
2865const struct uapi_definition mlx5_ib_flow_defs[] = {
2866 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
2867 MLX5_IB_OBJECT_FLOW_MATCHER),
2868 UAPI_DEF_CHAIN_OBJ_TREE(
2869 UVERBS_OBJECT_FLOW,
2870 &mlx5_ib_fs),
2871 UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_FLOW_ACTION,
2872 &mlx5_ib_flow_actions),
2873 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
2874 MLX5_IB_OBJECT_STEERING_ANCHOR,
2875 UAPI_DEF_IS_OBJ_SUPPORTED(mlx5_ib_shared_ft_allowed)),
2876 {},
2877};
2878
2879static const struct ib_device_ops flow_ops = {
2880 .create_flow = mlx5_ib_create_flow,
2881 .destroy_flow = mlx5_ib_destroy_flow,
2882 .destroy_flow_action = mlx5_ib_destroy_flow_action,
2883};
2884
2885int mlx5_ib_fs_init(struct mlx5_ib_dev *dev)
2886{
2887 dev->flow_db = kzalloc(sizeof(*dev->flow_db), GFP_KERNEL);
2888
2889 if (!dev->flow_db)
2890 return -ENOMEM;
2891
2892 mutex_init(&dev->flow_db->lock);
2893
2894 ib_set_device_ops(&dev->ib_dev, &flow_ops);
2895 return 0;
2896}