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