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_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
parse_flow_flow_action(struct mlx5_ib_flow_action * maction,bool is_egress,struct mlx5_flow_act * action)143 int 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
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)183 static 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 */
flow_is_multicast_only(const struct ib_flow_attr * ib_attr)541 static 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
is_valid_ethertype(struct mlx5_core_dev * mdev,const struct ib_flow_attr * flow_attr,bool check_inner)571 static 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
is_valid_attr(struct mlx5_core_dev * mdev,const struct ib_flow_attr * flow_attr)620 static 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
put_flow_table(struct mlx5_ib_dev * dev,struct mlx5_ib_flow_prio * prio,bool ft_added)627 static 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
mlx5_ib_destroy_flow(struct ib_flow * flow_id)637 static 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
ib_prio_to_core_prio(unsigned int priority,bool dont_trap)665 static 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
673 enum 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
mlx5_ib_shared_ft_allowed(struct ib_device * device)681 static 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
_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)688 static 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
get_flow_table(struct mlx5_ib_dev * dev,struct ib_flow_attr * flow_attr,enum flow_table_type ft_type)711 static 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
800 enum {
801 RDMA_RX_ECN_OPCOUNTER_PRIO,
802 RDMA_RX_CNP_OPCOUNTER_PRIO,
803 };
804
805 enum {
806 RDMA_TX_CNP_OPCOUNTER_PRIO,
807 };
808
set_vhca_port_spec(struct mlx5_ib_dev * dev,u32 port_num,struct mlx5_flow_spec * spec)809 static 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
set_ecn_ce_spec(struct mlx5_ib_dev * dev,u32 port_num,struct mlx5_flow_spec * spec,int ipv)826 static 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
set_cnp_spec(struct mlx5_ib_dev * dev,u32 port_num,struct mlx5_flow_spec * spec)852 static 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
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)870 int 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 = 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
964 del_rules:
965 for (i -= 1; i >= 0; i--)
966 mlx5_del_flow_rules(opfc->rule[i]);
967 put_flow_table(dev, prio, false);
968 free:
969 kfree(spec);
970 return err;
971 }
972
mlx5_ib_fs_remove_op_fc(struct mlx5_ib_dev * dev,struct mlx5_ib_op_fc * opfc,enum mlx5_ib_optional_counter_type type)973 void 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
set_underlay_qp(struct mlx5_ib_dev * dev,struct mlx5_flow_spec * spec,u32 underlay_qpn)985 static 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
mlx5_ib_set_rule_source_port(struct mlx5_ib_dev * dev,struct mlx5_flow_spec * spec,struct mlx5_eswitch_rep * rep)1005 static 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
_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)1037 static 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 =
1117 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;
1156 free:
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
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)1165 static 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
1173 enum {
1174 LEFTOVERS_MC,
1175 LEFTOVERS_UC,
1176 };
1177
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)1178 static 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
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)1237 static 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
1267 err_tx:
1268 mlx5_del_flow_rules(handler_rx->rule);
1269 ft_rx->refcount--;
1270 kfree(handler_rx);
1271 err:
1272 return ERR_PTR(err);
1273 }
1274
mlx5_ib_create_flow(struct ib_qp * qp,struct ib_flow_attr * flow_attr,struct ib_udata * udata)1275 static 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
1404 destroy_ft:
1405 put_flow_table(dev, ft_prio, false);
1406 if (ft_prio_tx)
1407 put_flow_table(dev, ft_prio_tx, false);
1408 unlock:
1409 mutex_unlock(&dev->flow_db->lock);
1410 kfree(dst);
1411 free_ucmd:
1412 kfree(ucmd);
1413 return ERR_PTR(err);
1414 }
1415
1416 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)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
1513 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)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
1556 free:
1557 if (err)
1558 kfree(handler);
1559 kvfree(spec);
1560 return err ? ERR_PTR(err) : handler;
1561 }
1562
raw_fs_is_multicast(struct mlx5_ib_flow_matcher * fs_matcher,void * match_v)1563 static 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
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,struct mlx5_fc * counter,void * cmd_in,int inlen,int dest_id,int dest_type)1603 static 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 struct mlx5_fc *counter, 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 if (WARN_ON(!counter)) {
1656 err = -EINVAL;
1657 goto unlock;
1658 }
1659 dst[dst_num].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
1660 dst[dst_num].counter = counter;
1661 dst_num++;
1662 }
1663
1664 handler = _create_raw_flow_rule(dev, ft_prio, dst_num ? dst : NULL,
1665 fs_matcher, flow_context, flow_act,
1666 cmd_in, inlen, dst_num);
1667
1668 if (IS_ERR(handler)) {
1669 err = PTR_ERR(handler);
1670 goto destroy_ft;
1671 }
1672
1673 mutex_unlock(&dev->flow_db->lock);
1674 atomic_inc(&fs_matcher->usecnt);
1675 handler->flow_matcher = fs_matcher;
1676
1677 kfree(dst);
1678
1679 return handler;
1680
1681 destroy_ft:
1682 put_flow_table(dev, ft_prio, false);
1683 unlock:
1684 mutex_unlock(&dev->flow_db->lock);
1685 kfree(dst);
1686
1687 return ERR_PTR(err);
1688 }
1689
destroy_flow_action_raw(struct mlx5_ib_flow_action * maction)1690 static void destroy_flow_action_raw(struct mlx5_ib_flow_action *maction)
1691 {
1692 switch (maction->flow_action_raw.sub_type) {
1693 case MLX5_IB_FLOW_ACTION_MODIFY_HEADER:
1694 mlx5_modify_header_dealloc(maction->flow_action_raw.dev->mdev,
1695 maction->flow_action_raw.modify_hdr);
1696 break;
1697 case MLX5_IB_FLOW_ACTION_PACKET_REFORMAT:
1698 mlx5_packet_reformat_dealloc(maction->flow_action_raw.dev->mdev,
1699 maction->flow_action_raw.pkt_reformat);
1700 break;
1701 case MLX5_IB_FLOW_ACTION_DECAP:
1702 break;
1703 default:
1704 break;
1705 }
1706 }
1707
mlx5_ib_destroy_flow_action(struct ib_flow_action * action)1708 static int mlx5_ib_destroy_flow_action(struct ib_flow_action *action)
1709 {
1710 struct mlx5_ib_flow_action *maction = to_mflow_act(action);
1711
1712 switch (action->type) {
1713 case IB_FLOW_ACTION_UNSPECIFIED:
1714 destroy_flow_action_raw(maction);
1715 break;
1716 default:
1717 WARN_ON(true);
1718 break;
1719 }
1720
1721 kfree(maction);
1722 return 0;
1723 }
1724
1725 static int
mlx5_ib_ft_type_to_namespace(enum mlx5_ib_uapi_flow_table_type table_type,enum mlx5_flow_namespace_type * namespace)1726 mlx5_ib_ft_type_to_namespace(enum mlx5_ib_uapi_flow_table_type table_type,
1727 enum mlx5_flow_namespace_type *namespace)
1728 {
1729 switch (table_type) {
1730 case MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX:
1731 *namespace = MLX5_FLOW_NAMESPACE_BYPASS;
1732 break;
1733 case MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX:
1734 *namespace = MLX5_FLOW_NAMESPACE_EGRESS;
1735 break;
1736 case MLX5_IB_UAPI_FLOW_TABLE_TYPE_FDB:
1737 *namespace = MLX5_FLOW_NAMESPACE_FDB_BYPASS;
1738 break;
1739 case MLX5_IB_UAPI_FLOW_TABLE_TYPE_RDMA_RX:
1740 *namespace = MLX5_FLOW_NAMESPACE_RDMA_RX;
1741 break;
1742 case MLX5_IB_UAPI_FLOW_TABLE_TYPE_RDMA_TX:
1743 *namespace = MLX5_FLOW_NAMESPACE_RDMA_TX;
1744 break;
1745 default:
1746 return -EINVAL;
1747 }
1748
1749 return 0;
1750 }
1751
1752 static const struct uverbs_attr_spec mlx5_ib_flow_type[] = {
1753 [MLX5_IB_FLOW_TYPE_NORMAL] = {
1754 .type = UVERBS_ATTR_TYPE_PTR_IN,
1755 .u.ptr = {
1756 .len = sizeof(u16), /* data is priority */
1757 .min_len = sizeof(u16),
1758 }
1759 },
1760 [MLX5_IB_FLOW_TYPE_SNIFFER] = {
1761 .type = UVERBS_ATTR_TYPE_PTR_IN,
1762 UVERBS_ATTR_NO_DATA(),
1763 },
1764 [MLX5_IB_FLOW_TYPE_ALL_DEFAULT] = {
1765 .type = UVERBS_ATTR_TYPE_PTR_IN,
1766 UVERBS_ATTR_NO_DATA(),
1767 },
1768 [MLX5_IB_FLOW_TYPE_MC_DEFAULT] = {
1769 .type = UVERBS_ATTR_TYPE_PTR_IN,
1770 UVERBS_ATTR_NO_DATA(),
1771 },
1772 };
1773
is_flow_dest(void * obj,int * dest_id,int * dest_type)1774 static bool is_flow_dest(void *obj, int *dest_id, int *dest_type)
1775 {
1776 struct devx_obj *devx_obj = obj;
1777 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox, opcode);
1778
1779 switch (opcode) {
1780 case MLX5_CMD_OP_DESTROY_TIR:
1781 *dest_type = MLX5_FLOW_DESTINATION_TYPE_TIR;
1782 *dest_id = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox,
1783 obj_id);
1784 return true;
1785
1786 case MLX5_CMD_OP_DESTROY_FLOW_TABLE:
1787 *dest_type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
1788 *dest_id = MLX5_GET(destroy_flow_table_in, devx_obj->dinbox,
1789 table_id);
1790 return true;
1791 default:
1792 return false;
1793 }
1794 }
1795
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)1796 static int get_dests(struct uverbs_attr_bundle *attrs,
1797 struct mlx5_ib_flow_matcher *fs_matcher, int *dest_id,
1798 int *dest_type, struct ib_qp **qp, u32 *flags)
1799 {
1800 bool dest_devx, dest_qp;
1801 void *devx_obj;
1802 int err;
1803
1804 dest_devx = uverbs_attr_is_valid(attrs,
1805 MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX);
1806 dest_qp = uverbs_attr_is_valid(attrs,
1807 MLX5_IB_ATTR_CREATE_FLOW_DEST_QP);
1808
1809 *flags = 0;
1810 err = uverbs_get_flags32(flags, attrs, MLX5_IB_ATTR_CREATE_FLOW_FLAGS,
1811 MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS |
1812 MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP);
1813 if (err)
1814 return err;
1815
1816 /* Both flags are not allowed */
1817 if (*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS &&
1818 *flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)
1819 return -EINVAL;
1820
1821 if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_BYPASS) {
1822 if (dest_devx && (dest_qp || *flags))
1823 return -EINVAL;
1824 else if (dest_qp && *flags)
1825 return -EINVAL;
1826 }
1827
1828 /* Allow only DEVX object, drop as dest for FDB */
1829 if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB_BYPASS &&
1830 !(dest_devx || (*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)))
1831 return -EINVAL;
1832
1833 /* Allow only DEVX object or QP as dest when inserting to RDMA_RX */
1834 if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX) &&
1835 ((!dest_devx && !dest_qp) || (dest_devx && dest_qp)))
1836 return -EINVAL;
1837
1838 *qp = NULL;
1839 if (dest_devx) {
1840 devx_obj =
1841 uverbs_attr_get_obj(attrs,
1842 MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX);
1843
1844 /* Verify that the given DEVX object is a flow
1845 * steering destination.
1846 */
1847 if (!is_flow_dest(devx_obj, dest_id, dest_type))
1848 return -EINVAL;
1849 /* Allow only flow table as dest when inserting to FDB or RDMA_RX */
1850 if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB_BYPASS ||
1851 fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX) &&
1852 *dest_type != MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE)
1853 return -EINVAL;
1854 } else if (dest_qp) {
1855 struct mlx5_ib_qp *mqp;
1856
1857 *qp = uverbs_attr_get_obj(attrs,
1858 MLX5_IB_ATTR_CREATE_FLOW_DEST_QP);
1859 if (IS_ERR(*qp))
1860 return PTR_ERR(*qp);
1861
1862 if ((*qp)->qp_type != IB_QPT_RAW_PACKET)
1863 return -EINVAL;
1864
1865 mqp = to_mqp(*qp);
1866 if (mqp->is_rss)
1867 *dest_id = mqp->rss_qp.tirn;
1868 else
1869 *dest_id = mqp->raw_packet_qp.rq.tirn;
1870 *dest_type = MLX5_FLOW_DESTINATION_TYPE_TIR;
1871 } else if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS ||
1872 fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_TX) &&
1873 !(*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)) {
1874 *dest_type = MLX5_FLOW_DESTINATION_TYPE_PORT;
1875 }
1876
1877 if (*dest_type == MLX5_FLOW_DESTINATION_TYPE_TIR &&
1878 (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS ||
1879 fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_TX))
1880 return -EINVAL;
1881
1882 return 0;
1883 }
1884
1885 static bool
is_flow_counter(void * obj,u32 offset,u32 * counter_id,u32 * fc_bulk_size)1886 is_flow_counter(void *obj, u32 offset, u32 *counter_id, u32 *fc_bulk_size)
1887 {
1888 struct devx_obj *devx_obj = obj;
1889 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox, opcode);
1890
1891 if (opcode == MLX5_CMD_OP_DEALLOC_FLOW_COUNTER) {
1892
1893 if (offset && offset >= devx_obj->flow_counter_bulk_size)
1894 return false;
1895
1896 *fc_bulk_size = devx_obj->flow_counter_bulk_size;
1897 *counter_id = MLX5_GET(dealloc_flow_counter_in,
1898 devx_obj->dinbox,
1899 flow_counter_id);
1900 *counter_id += offset;
1901 return true;
1902 }
1903
1904 return false;
1905 }
1906
1907 #define MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS 2
UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)1908 static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
1909 struct uverbs_attr_bundle *attrs)
1910 {
1911 struct mlx5_flow_context flow_context = {.flow_tag =
1912 MLX5_FS_DEFAULT_FLOW_TAG};
1913 int dest_id, dest_type = -1, inlen, len, ret, i;
1914 struct mlx5_ib_flow_handler *flow_handler;
1915 struct mlx5_ib_flow_matcher *fs_matcher;
1916 struct ib_uobject **arr_flow_actions;
1917 struct ib_uflow_resources *uflow_res;
1918 struct mlx5_flow_act flow_act = {};
1919 struct mlx5_fc *counter = NULL;
1920 struct ib_qp *qp = NULL;
1921 void *devx_obj, *cmd_in;
1922 struct ib_uobject *uobj;
1923 struct mlx5_ib_dev *dev;
1924 u32 flags;
1925
1926 if (!capable(CAP_NET_RAW))
1927 return -EPERM;
1928
1929 fs_matcher = uverbs_attr_get_obj(attrs,
1930 MLX5_IB_ATTR_CREATE_FLOW_MATCHER);
1931 uobj = uverbs_attr_get_uobject(attrs, MLX5_IB_ATTR_CREATE_FLOW_HANDLE);
1932 dev = mlx5_udata_to_mdev(&attrs->driver_udata);
1933
1934 if (get_dests(attrs, fs_matcher, &dest_id, &dest_type, &qp, &flags))
1935 return -EINVAL;
1936
1937 if (flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS)
1938 flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_NS;
1939
1940 if (flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)
1941 flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
1942
1943 len = uverbs_attr_get_uobjs_arr(attrs,
1944 MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX, &arr_flow_actions);
1945 if (len) {
1946 u32 *offset_attr, fc_bulk_size, offset = 0, counter_id = 0;
1947 devx_obj = arr_flow_actions[0]->object;
1948
1949 if (uverbs_attr_is_valid(attrs,
1950 MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET)) {
1951
1952 int num_offsets = uverbs_attr_ptr_get_array_size(
1953 attrs,
1954 MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET,
1955 sizeof(u32));
1956
1957 if (num_offsets != 1)
1958 return -EINVAL;
1959
1960 offset_attr = uverbs_attr_get_alloced_ptr(
1961 attrs,
1962 MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET);
1963 offset = *offset_attr;
1964 }
1965
1966 if (!is_flow_counter(devx_obj, offset, &counter_id, &fc_bulk_size))
1967 return -EINVAL;
1968 counter = mlx5_fc_local_create(counter_id, offset, fc_bulk_size);
1969 if (IS_ERR(counter))
1970 return PTR_ERR(counter);
1971
1972 flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
1973 }
1974
1975 cmd_in = uverbs_attr_get_alloced_ptr(
1976 attrs, MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);
1977 inlen = uverbs_attr_get_len(attrs,
1978 MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);
1979
1980 uflow_res = flow_resources_alloc(MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS);
1981 if (!uflow_res) {
1982 ret = -ENOMEM;
1983 goto destroy_counter;
1984 }
1985
1986 len = uverbs_attr_get_uobjs_arr(attrs,
1987 MLX5_IB_ATTR_CREATE_FLOW_ARR_FLOW_ACTIONS, &arr_flow_actions);
1988 for (i = 0; i < len; i++) {
1989 struct mlx5_ib_flow_action *maction =
1990 to_mflow_act(arr_flow_actions[i]->object);
1991
1992 ret = parse_flow_flow_action(maction, false, &flow_act);
1993 if (ret)
1994 goto err_out;
1995 flow_resources_add(uflow_res, IB_FLOW_SPEC_ACTION_HANDLE,
1996 arr_flow_actions[i]->object);
1997 }
1998
1999 ret = uverbs_copy_from(&flow_context.flow_tag, attrs,
2000 MLX5_IB_ATTR_CREATE_FLOW_TAG);
2001 if (!ret) {
2002 if (flow_context.flow_tag >= BIT(24)) {
2003 ret = -EINVAL;
2004 goto err_out;
2005 }
2006 flow_context.flags |= FLOW_CONTEXT_HAS_TAG;
2007 }
2008
2009 flow_handler =
2010 raw_fs_rule_add(dev, fs_matcher, &flow_context, &flow_act,
2011 counter, cmd_in, inlen, dest_id, dest_type);
2012 if (IS_ERR(flow_handler)) {
2013 ret = PTR_ERR(flow_handler);
2014 goto err_out;
2015 }
2016
2017 ib_set_flow(uobj, &flow_handler->ibflow, qp, &dev->ib_dev, uflow_res);
2018
2019 return 0;
2020 err_out:
2021 ib_uverbs_flow_resources_free(uflow_res);
2022 destroy_counter:
2023 if (counter)
2024 mlx5_fc_local_destroy(counter);
2025 return ret;
2026 }
2027
flow_matcher_cleanup(struct ib_uobject * uobject,enum rdma_remove_reason why,struct uverbs_attr_bundle * attrs)2028 static int flow_matcher_cleanup(struct ib_uobject *uobject,
2029 enum rdma_remove_reason why,
2030 struct uverbs_attr_bundle *attrs)
2031 {
2032 struct mlx5_ib_flow_matcher *obj = uobject->object;
2033
2034 if (atomic_read(&obj->usecnt))
2035 return -EBUSY;
2036
2037 kfree(obj);
2038 return 0;
2039 }
2040
steering_anchor_create_ft(struct mlx5_ib_dev * dev,struct mlx5_ib_flow_prio * ft_prio,enum mlx5_flow_namespace_type ns_type)2041 static int steering_anchor_create_ft(struct mlx5_ib_dev *dev,
2042 struct mlx5_ib_flow_prio *ft_prio,
2043 enum mlx5_flow_namespace_type ns_type)
2044 {
2045 struct mlx5_flow_table_attr ft_attr = {};
2046 struct mlx5_flow_namespace *ns;
2047 struct mlx5_flow_table *ft;
2048
2049 if (ft_prio->anchor.ft)
2050 return 0;
2051
2052 ns = mlx5_get_flow_namespace(dev->mdev, ns_type);
2053 if (!ns)
2054 return -EOPNOTSUPP;
2055
2056 ft_attr.flags = MLX5_FLOW_TABLE_UNMANAGED;
2057 ft_attr.uid = MLX5_SHARED_RESOURCE_UID;
2058 ft_attr.prio = 0;
2059 ft_attr.max_fte = 2;
2060 ft_attr.level = 1;
2061
2062 ft = mlx5_create_flow_table(ns, &ft_attr);
2063 if (IS_ERR(ft))
2064 return PTR_ERR(ft);
2065
2066 ft_prio->anchor.ft = ft;
2067
2068 return 0;
2069 }
2070
steering_anchor_destroy_ft(struct mlx5_ib_flow_prio * ft_prio)2071 static void steering_anchor_destroy_ft(struct mlx5_ib_flow_prio *ft_prio)
2072 {
2073 if (ft_prio->anchor.ft) {
2074 mlx5_destroy_flow_table(ft_prio->anchor.ft);
2075 ft_prio->anchor.ft = NULL;
2076 }
2077 }
2078
2079 static int
steering_anchor_create_fg_drop(struct mlx5_ib_flow_prio * ft_prio)2080 steering_anchor_create_fg_drop(struct mlx5_ib_flow_prio *ft_prio)
2081 {
2082 int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
2083 struct mlx5_flow_group *fg;
2084 void *flow_group_in;
2085 int err = 0;
2086
2087 if (ft_prio->anchor.fg_drop)
2088 return 0;
2089
2090 flow_group_in = kvzalloc(inlen, GFP_KERNEL);
2091 if (!flow_group_in)
2092 return -ENOMEM;
2093
2094 MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 1);
2095 MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, 1);
2096
2097 fg = mlx5_create_flow_group(ft_prio->anchor.ft, flow_group_in);
2098 if (IS_ERR(fg)) {
2099 err = PTR_ERR(fg);
2100 goto out;
2101 }
2102
2103 ft_prio->anchor.fg_drop = fg;
2104
2105 out:
2106 kvfree(flow_group_in);
2107
2108 return err;
2109 }
2110
2111 static void
steering_anchor_destroy_fg_drop(struct mlx5_ib_flow_prio * ft_prio)2112 steering_anchor_destroy_fg_drop(struct mlx5_ib_flow_prio *ft_prio)
2113 {
2114 if (ft_prio->anchor.fg_drop) {
2115 mlx5_destroy_flow_group(ft_prio->anchor.fg_drop);
2116 ft_prio->anchor.fg_drop = NULL;
2117 }
2118 }
2119
2120 static int
steering_anchor_create_fg_goto_table(struct mlx5_ib_flow_prio * ft_prio)2121 steering_anchor_create_fg_goto_table(struct mlx5_ib_flow_prio *ft_prio)
2122 {
2123 int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
2124 struct mlx5_flow_group *fg;
2125 void *flow_group_in;
2126 int err = 0;
2127
2128 if (ft_prio->anchor.fg_goto_table)
2129 return 0;
2130
2131 flow_group_in = kvzalloc(inlen, GFP_KERNEL);
2132 if (!flow_group_in)
2133 return -ENOMEM;
2134
2135 fg = mlx5_create_flow_group(ft_prio->anchor.ft, flow_group_in);
2136 if (IS_ERR(fg)) {
2137 err = PTR_ERR(fg);
2138 goto out;
2139 }
2140 ft_prio->anchor.fg_goto_table = fg;
2141
2142 out:
2143 kvfree(flow_group_in);
2144
2145 return err;
2146 }
2147
2148 static void
steering_anchor_destroy_fg_goto_table(struct mlx5_ib_flow_prio * ft_prio)2149 steering_anchor_destroy_fg_goto_table(struct mlx5_ib_flow_prio *ft_prio)
2150 {
2151 if (ft_prio->anchor.fg_goto_table) {
2152 mlx5_destroy_flow_group(ft_prio->anchor.fg_goto_table);
2153 ft_prio->anchor.fg_goto_table = NULL;
2154 }
2155 }
2156
2157 static int
steering_anchor_create_rule_drop(struct mlx5_ib_flow_prio * ft_prio)2158 steering_anchor_create_rule_drop(struct mlx5_ib_flow_prio *ft_prio)
2159 {
2160 struct mlx5_flow_act flow_act = {};
2161 struct mlx5_flow_handle *handle;
2162
2163 if (ft_prio->anchor.rule_drop)
2164 return 0;
2165
2166 flow_act.fg = ft_prio->anchor.fg_drop;
2167 flow_act.action = MLX5_FLOW_CONTEXT_ACTION_DROP;
2168
2169 handle = mlx5_add_flow_rules(ft_prio->anchor.ft, NULL, &flow_act,
2170 NULL, 0);
2171 if (IS_ERR(handle))
2172 return PTR_ERR(handle);
2173
2174 ft_prio->anchor.rule_drop = handle;
2175
2176 return 0;
2177 }
2178
steering_anchor_destroy_rule_drop(struct mlx5_ib_flow_prio * ft_prio)2179 static void steering_anchor_destroy_rule_drop(struct mlx5_ib_flow_prio *ft_prio)
2180 {
2181 if (ft_prio->anchor.rule_drop) {
2182 mlx5_del_flow_rules(ft_prio->anchor.rule_drop);
2183 ft_prio->anchor.rule_drop = NULL;
2184 }
2185 }
2186
2187 static int
steering_anchor_create_rule_goto_table(struct mlx5_ib_flow_prio * ft_prio)2188 steering_anchor_create_rule_goto_table(struct mlx5_ib_flow_prio *ft_prio)
2189 {
2190 struct mlx5_flow_destination dest = {};
2191 struct mlx5_flow_act flow_act = {};
2192 struct mlx5_flow_handle *handle;
2193
2194 if (ft_prio->anchor.rule_goto_table)
2195 return 0;
2196
2197 flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
2198 flow_act.flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
2199 flow_act.fg = ft_prio->anchor.fg_goto_table;
2200
2201 dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
2202 dest.ft = ft_prio->flow_table;
2203
2204 handle = mlx5_add_flow_rules(ft_prio->anchor.ft, NULL, &flow_act,
2205 &dest, 1);
2206 if (IS_ERR(handle))
2207 return PTR_ERR(handle);
2208
2209 ft_prio->anchor.rule_goto_table = handle;
2210
2211 return 0;
2212 }
2213
2214 static void
steering_anchor_destroy_rule_goto_table(struct mlx5_ib_flow_prio * ft_prio)2215 steering_anchor_destroy_rule_goto_table(struct mlx5_ib_flow_prio *ft_prio)
2216 {
2217 if (ft_prio->anchor.rule_goto_table) {
2218 mlx5_del_flow_rules(ft_prio->anchor.rule_goto_table);
2219 ft_prio->anchor.rule_goto_table = NULL;
2220 }
2221 }
2222
steering_anchor_create_res(struct mlx5_ib_dev * dev,struct mlx5_ib_flow_prio * ft_prio,enum mlx5_flow_namespace_type ns_type)2223 static int steering_anchor_create_res(struct mlx5_ib_dev *dev,
2224 struct mlx5_ib_flow_prio *ft_prio,
2225 enum mlx5_flow_namespace_type ns_type)
2226 {
2227 int err;
2228
2229 err = steering_anchor_create_ft(dev, ft_prio, ns_type);
2230 if (err)
2231 return err;
2232
2233 err = steering_anchor_create_fg_drop(ft_prio);
2234 if (err)
2235 goto destroy_ft;
2236
2237 err = steering_anchor_create_fg_goto_table(ft_prio);
2238 if (err)
2239 goto destroy_fg_drop;
2240
2241 err = steering_anchor_create_rule_drop(ft_prio);
2242 if (err)
2243 goto destroy_fg_goto_table;
2244
2245 err = steering_anchor_create_rule_goto_table(ft_prio);
2246 if (err)
2247 goto destroy_rule_drop;
2248
2249 return 0;
2250
2251 destroy_rule_drop:
2252 steering_anchor_destroy_rule_drop(ft_prio);
2253 destroy_fg_goto_table:
2254 steering_anchor_destroy_fg_goto_table(ft_prio);
2255 destroy_fg_drop:
2256 steering_anchor_destroy_fg_drop(ft_prio);
2257 destroy_ft:
2258 steering_anchor_destroy_ft(ft_prio);
2259
2260 return err;
2261 }
2262
mlx5_steering_anchor_destroy_res(struct mlx5_ib_flow_prio * ft_prio)2263 static void mlx5_steering_anchor_destroy_res(struct mlx5_ib_flow_prio *ft_prio)
2264 {
2265 steering_anchor_destroy_rule_goto_table(ft_prio);
2266 steering_anchor_destroy_rule_drop(ft_prio);
2267 steering_anchor_destroy_fg_goto_table(ft_prio);
2268 steering_anchor_destroy_fg_drop(ft_prio);
2269 steering_anchor_destroy_ft(ft_prio);
2270 }
2271
steering_anchor_cleanup(struct ib_uobject * uobject,enum rdma_remove_reason why,struct uverbs_attr_bundle * attrs)2272 static int steering_anchor_cleanup(struct ib_uobject *uobject,
2273 enum rdma_remove_reason why,
2274 struct uverbs_attr_bundle *attrs)
2275 {
2276 struct mlx5_ib_steering_anchor *obj = uobject->object;
2277
2278 if (atomic_read(&obj->usecnt))
2279 return -EBUSY;
2280
2281 mutex_lock(&obj->dev->flow_db->lock);
2282 if (!--obj->ft_prio->anchor.rule_goto_table_ref)
2283 steering_anchor_destroy_rule_goto_table(obj->ft_prio);
2284
2285 put_flow_table(obj->dev, obj->ft_prio, true);
2286 mutex_unlock(&obj->dev->flow_db->lock);
2287
2288 kfree(obj);
2289 return 0;
2290 }
2291
fs_cleanup_anchor(struct mlx5_ib_flow_prio * prio,int count)2292 static void fs_cleanup_anchor(struct mlx5_ib_flow_prio *prio,
2293 int count)
2294 {
2295 while (count--)
2296 mlx5_steering_anchor_destroy_res(&prio[count]);
2297 }
2298
mlx5_ib_fs_cleanup_anchor(struct mlx5_ib_dev * dev)2299 void mlx5_ib_fs_cleanup_anchor(struct mlx5_ib_dev *dev)
2300 {
2301 fs_cleanup_anchor(dev->flow_db->prios, MLX5_IB_NUM_FLOW_FT);
2302 fs_cleanup_anchor(dev->flow_db->egress_prios, MLX5_IB_NUM_FLOW_FT);
2303 fs_cleanup_anchor(dev->flow_db->sniffer, MLX5_IB_NUM_SNIFFER_FTS);
2304 fs_cleanup_anchor(dev->flow_db->egress, MLX5_IB_NUM_EGRESS_FTS);
2305 fs_cleanup_anchor(dev->flow_db->fdb, MLX5_IB_NUM_FDB_FTS);
2306 fs_cleanup_anchor(dev->flow_db->rdma_rx, MLX5_IB_NUM_FLOW_FT);
2307 fs_cleanup_anchor(dev->flow_db->rdma_tx, MLX5_IB_NUM_FLOW_FT);
2308 }
2309
mlx5_ib_matcher_ns(struct uverbs_attr_bundle * attrs,struct mlx5_ib_flow_matcher * obj)2310 static int mlx5_ib_matcher_ns(struct uverbs_attr_bundle *attrs,
2311 struct mlx5_ib_flow_matcher *obj)
2312 {
2313 enum mlx5_ib_uapi_flow_table_type ft_type =
2314 MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX;
2315 u32 flags;
2316 int err;
2317
2318 /* New users should use MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE and older
2319 * users should switch to it. We leave this to not break userspace
2320 */
2321 if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE) &&
2322 uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS))
2323 return -EINVAL;
2324
2325 if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE)) {
2326 err = uverbs_get_const(&ft_type, attrs,
2327 MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE);
2328 if (err)
2329 return err;
2330
2331 err = mlx5_ib_ft_type_to_namespace(ft_type, &obj->ns_type);
2332 if (err)
2333 return err;
2334
2335 return 0;
2336 }
2337
2338 if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS)) {
2339 err = uverbs_get_flags32(&flags, attrs,
2340 MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS,
2341 IB_FLOW_ATTR_FLAGS_EGRESS);
2342 if (err)
2343 return err;
2344
2345 if (flags)
2346 return mlx5_ib_ft_type_to_namespace(
2347 MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX,
2348 &obj->ns_type);
2349 }
2350
2351 obj->ns_type = MLX5_FLOW_NAMESPACE_BYPASS;
2352
2353 return 0;
2354 }
2355
UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_MATCHER_CREATE)2356 static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_MATCHER_CREATE)(
2357 struct uverbs_attr_bundle *attrs)
2358 {
2359 struct ib_uobject *uobj = uverbs_attr_get_uobject(
2360 attrs, MLX5_IB_ATTR_FLOW_MATCHER_CREATE_HANDLE);
2361 struct mlx5_ib_dev *dev = mlx5_udata_to_mdev(&attrs->driver_udata);
2362 struct mlx5_ib_flow_matcher *obj;
2363 int err;
2364
2365 obj = kzalloc(sizeof(struct mlx5_ib_flow_matcher), GFP_KERNEL);
2366 if (!obj)
2367 return -ENOMEM;
2368
2369 obj->mask_len = uverbs_attr_get_len(
2370 attrs, MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK);
2371 err = uverbs_copy_from(&obj->matcher_mask,
2372 attrs,
2373 MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK);
2374 if (err)
2375 goto end;
2376
2377 obj->flow_type = uverbs_attr_get_enum_id(
2378 attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE);
2379
2380 if (obj->flow_type == MLX5_IB_FLOW_TYPE_NORMAL) {
2381 err = uverbs_copy_from(&obj->priority,
2382 attrs,
2383 MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE);
2384 if (err)
2385 goto end;
2386 }
2387
2388 err = uverbs_copy_from(&obj->match_criteria_enable,
2389 attrs,
2390 MLX5_IB_ATTR_FLOW_MATCHER_MATCH_CRITERIA);
2391 if (err)
2392 goto end;
2393
2394 err = mlx5_ib_matcher_ns(attrs, obj);
2395 if (err)
2396 goto end;
2397
2398 if (obj->ns_type == MLX5_FLOW_NAMESPACE_FDB_BYPASS &&
2399 mlx5_eswitch_mode(dev->mdev) != MLX5_ESWITCH_OFFLOADS) {
2400 err = -EINVAL;
2401 goto end;
2402 }
2403
2404 uobj->object = obj;
2405 obj->mdev = dev->mdev;
2406 atomic_set(&obj->usecnt, 0);
2407 return 0;
2408
2409 end:
2410 kfree(obj);
2411 return err;
2412 }
2413
UVERBS_HANDLER(MLX5_IB_METHOD_STEERING_ANCHOR_CREATE)2414 static int UVERBS_HANDLER(MLX5_IB_METHOD_STEERING_ANCHOR_CREATE)(
2415 struct uverbs_attr_bundle *attrs)
2416 {
2417 struct ib_uobject *uobj = uverbs_attr_get_uobject(
2418 attrs, MLX5_IB_ATTR_STEERING_ANCHOR_CREATE_HANDLE);
2419 struct mlx5_ib_dev *dev = mlx5_udata_to_mdev(&attrs->driver_udata);
2420 enum mlx5_ib_uapi_flow_table_type ib_uapi_ft_type;
2421 enum mlx5_flow_namespace_type ns_type;
2422 struct mlx5_ib_steering_anchor *obj;
2423 struct mlx5_ib_flow_prio *ft_prio;
2424 u16 priority;
2425 u32 ft_id;
2426 int err;
2427
2428 if (!capable(CAP_NET_RAW))
2429 return -EPERM;
2430
2431 err = uverbs_get_const(&ib_uapi_ft_type, attrs,
2432 MLX5_IB_ATTR_STEERING_ANCHOR_FT_TYPE);
2433 if (err)
2434 return err;
2435
2436 err = mlx5_ib_ft_type_to_namespace(ib_uapi_ft_type, &ns_type);
2437 if (err)
2438 return err;
2439
2440 err = uverbs_copy_from(&priority, attrs,
2441 MLX5_IB_ATTR_STEERING_ANCHOR_PRIORITY);
2442 if (err)
2443 return err;
2444
2445 obj = kzalloc(sizeof(*obj), GFP_KERNEL);
2446 if (!obj)
2447 return -ENOMEM;
2448
2449 mutex_lock(&dev->flow_db->lock);
2450
2451 ft_prio = _get_flow_table(dev, priority, ns_type, 0);
2452 if (IS_ERR(ft_prio)) {
2453 err = PTR_ERR(ft_prio);
2454 goto free_obj;
2455 }
2456
2457 ft_prio->refcount++;
2458
2459 if (!ft_prio->anchor.rule_goto_table_ref) {
2460 err = steering_anchor_create_res(dev, ft_prio, ns_type);
2461 if (err)
2462 goto put_flow_table;
2463 }
2464
2465 ft_prio->anchor.rule_goto_table_ref++;
2466
2467 ft_id = mlx5_flow_table_id(ft_prio->anchor.ft);
2468
2469 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_STEERING_ANCHOR_FT_ID,
2470 &ft_id, sizeof(ft_id));
2471 if (err)
2472 goto destroy_res;
2473
2474 mutex_unlock(&dev->flow_db->lock);
2475
2476 uobj->object = obj;
2477 obj->dev = dev;
2478 obj->ft_prio = ft_prio;
2479 atomic_set(&obj->usecnt, 0);
2480
2481 return 0;
2482
2483 destroy_res:
2484 --ft_prio->anchor.rule_goto_table_ref;
2485 mlx5_steering_anchor_destroy_res(ft_prio);
2486 put_flow_table:
2487 put_flow_table(dev, ft_prio, true);
2488 free_obj:
2489 mutex_unlock(&dev->flow_db->lock);
2490 kfree(obj);
2491
2492 return err;
2493 }
2494
2495 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)2496 mlx5_ib_create_modify_header(struct mlx5_ib_dev *dev,
2497 enum mlx5_ib_uapi_flow_table_type ft_type,
2498 u8 num_actions, void *in)
2499 {
2500 enum mlx5_flow_namespace_type namespace;
2501 struct mlx5_ib_flow_action *maction;
2502 int ret;
2503
2504 ret = mlx5_ib_ft_type_to_namespace(ft_type, &namespace);
2505 if (ret)
2506 return ERR_PTR(-EINVAL);
2507
2508 maction = kzalloc(sizeof(*maction), GFP_KERNEL);
2509 if (!maction)
2510 return ERR_PTR(-ENOMEM);
2511
2512 maction->flow_action_raw.modify_hdr =
2513 mlx5_modify_header_alloc(dev->mdev, namespace, num_actions, in);
2514
2515 if (IS_ERR(maction->flow_action_raw.modify_hdr)) {
2516 ret = PTR_ERR(maction->flow_action_raw.modify_hdr);
2517 kfree(maction);
2518 return ERR_PTR(ret);
2519 }
2520 maction->flow_action_raw.sub_type =
2521 MLX5_IB_FLOW_ACTION_MODIFY_HEADER;
2522 maction->flow_action_raw.dev = dev;
2523
2524 return &maction->ib_action;
2525 }
2526
mlx5_ib_modify_header_supported(struct mlx5_ib_dev * dev)2527 static bool mlx5_ib_modify_header_supported(struct mlx5_ib_dev *dev)
2528 {
2529 return MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
2530 max_modify_header_actions) ||
2531 MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev,
2532 max_modify_header_actions) ||
2533 MLX5_CAP_FLOWTABLE_RDMA_TX(dev->mdev,
2534 max_modify_header_actions);
2535 }
2536
UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER)2537 static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER)(
2538 struct uverbs_attr_bundle *attrs)
2539 {
2540 struct ib_uobject *uobj = uverbs_attr_get_uobject(
2541 attrs, MLX5_IB_ATTR_CREATE_MODIFY_HEADER_HANDLE);
2542 struct mlx5_ib_dev *mdev = mlx5_udata_to_mdev(&attrs->driver_udata);
2543 enum mlx5_ib_uapi_flow_table_type ft_type;
2544 struct ib_flow_action *action;
2545 int num_actions;
2546 void *in;
2547 int ret;
2548
2549 if (!mlx5_ib_modify_header_supported(mdev))
2550 return -EOPNOTSUPP;
2551
2552 in = uverbs_attr_get_alloced_ptr(attrs,
2553 MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM);
2554
2555 num_actions = uverbs_attr_ptr_get_array_size(
2556 attrs, MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM,
2557 MLX5_UN_SZ_BYTES(set_add_copy_action_in_auto));
2558 if (num_actions < 0)
2559 return num_actions;
2560
2561 ret = uverbs_get_const(&ft_type, attrs,
2562 MLX5_IB_ATTR_CREATE_MODIFY_HEADER_FT_TYPE);
2563 if (ret)
2564 return ret;
2565 action = mlx5_ib_create_modify_header(mdev, ft_type, num_actions, in);
2566 if (IS_ERR(action))
2567 return PTR_ERR(action);
2568
2569 uverbs_flow_action_fill_action(action, uobj, &mdev->ib_dev,
2570 IB_FLOW_ACTION_UNSPECIFIED);
2571
2572 return 0;
2573 }
2574
mlx5_ib_flow_action_packet_reformat_valid(struct mlx5_ib_dev * ibdev,u8 packet_reformat_type,u8 ft_type)2575 static bool mlx5_ib_flow_action_packet_reformat_valid(struct mlx5_ib_dev *ibdev,
2576 u8 packet_reformat_type,
2577 u8 ft_type)
2578 {
2579 switch (packet_reformat_type) {
2580 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL:
2581 if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX)
2582 return MLX5_CAP_FLOWTABLE(ibdev->mdev,
2583 encap_general_header);
2584 break;
2585 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L3_TUNNEL:
2586 if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX)
2587 return MLX5_CAP_FLOWTABLE_NIC_TX(ibdev->mdev,
2588 reformat_l2_to_l3_tunnel);
2589 break;
2590 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L3_TUNNEL_TO_L2:
2591 if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX)
2592 return MLX5_CAP_FLOWTABLE_NIC_RX(ibdev->mdev,
2593 reformat_l3_tunnel_to_l2);
2594 break;
2595 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2:
2596 if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX)
2597 return MLX5_CAP_FLOWTABLE_NIC_RX(ibdev->mdev, decap);
2598 break;
2599 default:
2600 break;
2601 }
2602
2603 return false;
2604 }
2605
mlx5_ib_dv_to_prm_packet_reforamt_type(u8 dv_prt,u8 * prm_prt)2606 static int mlx5_ib_dv_to_prm_packet_reforamt_type(u8 dv_prt, u8 *prm_prt)
2607 {
2608 switch (dv_prt) {
2609 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL:
2610 *prm_prt = MLX5_REFORMAT_TYPE_L2_TO_L2_TUNNEL;
2611 break;
2612 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L3_TUNNEL_TO_L2:
2613 *prm_prt = MLX5_REFORMAT_TYPE_L3_TUNNEL_TO_L2;
2614 break;
2615 case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L3_TUNNEL:
2616 *prm_prt = MLX5_REFORMAT_TYPE_L2_TO_L3_TUNNEL;
2617 break;
2618 default:
2619 return -EINVAL;
2620 }
2621
2622 return 0;
2623 }
2624
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)2625 static int mlx5_ib_flow_action_create_packet_reformat_ctx(
2626 struct mlx5_ib_dev *dev,
2627 struct mlx5_ib_flow_action *maction,
2628 u8 ft_type, u8 dv_prt,
2629 void *in, size_t len)
2630 {
2631 struct mlx5_pkt_reformat_params reformat_params;
2632 enum mlx5_flow_namespace_type namespace;
2633 u8 prm_prt;
2634 int ret;
2635
2636 ret = mlx5_ib_ft_type_to_namespace(ft_type, &namespace);
2637 if (ret)
2638 return ret;
2639
2640 ret = mlx5_ib_dv_to_prm_packet_reforamt_type(dv_prt, &prm_prt);
2641 if (ret)
2642 return ret;
2643
2644 memset(&reformat_params, 0, sizeof(reformat_params));
2645 reformat_params.type = prm_prt;
2646 reformat_params.size = len;
2647 reformat_params.data = in;
2648 maction->flow_action_raw.pkt_reformat =
2649 mlx5_packet_reformat_alloc(dev->mdev, &reformat_params,
2650 namespace);
2651 if (IS_ERR(maction->flow_action_raw.pkt_reformat)) {
2652 ret = PTR_ERR(maction->flow_action_raw.pkt_reformat);
2653 return ret;
2654 }
2655
2656 maction->flow_action_raw.sub_type =
2657 MLX5_IB_FLOW_ACTION_PACKET_REFORMAT;
2658 maction->flow_action_raw.dev = dev;
2659
2660 return 0;
2661 }
2662
UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT)2663 static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT)(
2664 struct uverbs_attr_bundle *attrs)
2665 {
2666 struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
2667 MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_HANDLE);
2668 struct mlx5_ib_dev *mdev = mlx5_udata_to_mdev(&attrs->driver_udata);
2669 enum mlx5_ib_uapi_flow_action_packet_reformat_type dv_prt;
2670 enum mlx5_ib_uapi_flow_table_type ft_type;
2671 struct mlx5_ib_flow_action *maction;
2672 int ret;
2673
2674 ret = uverbs_get_const(&ft_type, attrs,
2675 MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_FT_TYPE);
2676 if (ret)
2677 return ret;
2678
2679 ret = uverbs_get_const(&dv_prt, attrs,
2680 MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_TYPE);
2681 if (ret)
2682 return ret;
2683
2684 if (!mlx5_ib_flow_action_packet_reformat_valid(mdev, dv_prt, ft_type))
2685 return -EOPNOTSUPP;
2686
2687 maction = kzalloc(sizeof(*maction), GFP_KERNEL);
2688 if (!maction)
2689 return -ENOMEM;
2690
2691 if (dv_prt ==
2692 MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2) {
2693 maction->flow_action_raw.sub_type =
2694 MLX5_IB_FLOW_ACTION_DECAP;
2695 maction->flow_action_raw.dev = mdev;
2696 } else {
2697 void *in;
2698 int len;
2699
2700 in = uverbs_attr_get_alloced_ptr(attrs,
2701 MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF);
2702 if (IS_ERR(in)) {
2703 ret = PTR_ERR(in);
2704 goto free_maction;
2705 }
2706
2707 len = uverbs_attr_get_len(attrs,
2708 MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF);
2709
2710 ret = mlx5_ib_flow_action_create_packet_reformat_ctx(mdev,
2711 maction, ft_type, dv_prt, in, len);
2712 if (ret)
2713 goto free_maction;
2714 }
2715
2716 uverbs_flow_action_fill_action(&maction->ib_action, uobj, &mdev->ib_dev,
2717 IB_FLOW_ACTION_UNSPECIFIED);
2718 return 0;
2719
2720 free_maction:
2721 kfree(maction);
2722 return ret;
2723 }
2724
2725 DECLARE_UVERBS_NAMED_METHOD(
2726 MLX5_IB_METHOD_CREATE_FLOW,
2727 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_HANDLE,
2728 UVERBS_OBJECT_FLOW,
2729 UVERBS_ACCESS_NEW,
2730 UA_MANDATORY),
2731 UVERBS_ATTR_PTR_IN(
2732 MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE,
2733 UVERBS_ATTR_SIZE(1, sizeof(struct mlx5_ib_match_params)),
2734 UA_MANDATORY,
2735 UA_ALLOC_AND_COPY),
2736 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_MATCHER,
2737 MLX5_IB_OBJECT_FLOW_MATCHER,
2738 UVERBS_ACCESS_READ,
2739 UA_MANDATORY),
2740 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_DEST_QP,
2741 UVERBS_OBJECT_QP,
2742 UVERBS_ACCESS_READ),
2743 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX,
2744 MLX5_IB_OBJECT_DEVX_OBJ,
2745 UVERBS_ACCESS_READ),
2746 UVERBS_ATTR_IDRS_ARR(MLX5_IB_ATTR_CREATE_FLOW_ARR_FLOW_ACTIONS,
2747 UVERBS_OBJECT_FLOW_ACTION,
2748 UVERBS_ACCESS_READ, 1,
2749 MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS,
2750 UA_OPTIONAL),
2751 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_FLOW_TAG,
2752 UVERBS_ATTR_TYPE(u32),
2753 UA_OPTIONAL),
2754 UVERBS_ATTR_IDRS_ARR(MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX,
2755 MLX5_IB_OBJECT_DEVX_OBJ,
2756 UVERBS_ACCESS_READ, 1, 1,
2757 UA_OPTIONAL),
2758 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET,
2759 UVERBS_ATTR_MIN_SIZE(sizeof(u32)),
2760 UA_OPTIONAL,
2761 UA_ALLOC_AND_COPY),
2762 UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_CREATE_FLOW_FLAGS,
2763 enum mlx5_ib_create_flow_flags,
2764 UA_OPTIONAL));
2765
2766 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
2767 MLX5_IB_METHOD_DESTROY_FLOW,
2768 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_HANDLE,
2769 UVERBS_OBJECT_FLOW,
2770 UVERBS_ACCESS_DESTROY,
2771 UA_MANDATORY));
2772
2773 ADD_UVERBS_METHODS(mlx5_ib_fs,
2774 UVERBS_OBJECT_FLOW,
2775 &UVERBS_METHOD(MLX5_IB_METHOD_CREATE_FLOW),
2776 &UVERBS_METHOD(MLX5_IB_METHOD_DESTROY_FLOW));
2777
2778 DECLARE_UVERBS_NAMED_METHOD(
2779 MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER,
2780 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_HANDLE,
2781 UVERBS_OBJECT_FLOW_ACTION,
2782 UVERBS_ACCESS_NEW,
2783 UA_MANDATORY),
2784 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM,
2785 UVERBS_ATTR_MIN_SIZE(MLX5_UN_SZ_BYTES(
2786 set_add_copy_action_in_auto)),
2787 UA_MANDATORY,
2788 UA_ALLOC_AND_COPY),
2789 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_FT_TYPE,
2790 enum mlx5_ib_uapi_flow_table_type,
2791 UA_MANDATORY));
2792
2793 DECLARE_UVERBS_NAMED_METHOD(
2794 MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT,
2795 UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_HANDLE,
2796 UVERBS_OBJECT_FLOW_ACTION,
2797 UVERBS_ACCESS_NEW,
2798 UA_MANDATORY),
2799 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF,
2800 UVERBS_ATTR_MIN_SIZE(1),
2801 UA_ALLOC_AND_COPY,
2802 UA_OPTIONAL),
2803 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_TYPE,
2804 enum mlx5_ib_uapi_flow_action_packet_reformat_type,
2805 UA_MANDATORY),
2806 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_FT_TYPE,
2807 enum mlx5_ib_uapi_flow_table_type,
2808 UA_MANDATORY));
2809
2810 ADD_UVERBS_METHODS(
2811 mlx5_ib_flow_actions,
2812 UVERBS_OBJECT_FLOW_ACTION,
2813 &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER),
2814 &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT));
2815
2816 DECLARE_UVERBS_NAMED_METHOD(
2817 MLX5_IB_METHOD_FLOW_MATCHER_CREATE,
2818 UVERBS_ATTR_IDR(MLX5_IB_ATTR_FLOW_MATCHER_CREATE_HANDLE,
2819 MLX5_IB_OBJECT_FLOW_MATCHER,
2820 UVERBS_ACCESS_NEW,
2821 UA_MANDATORY),
2822 UVERBS_ATTR_PTR_IN(
2823 MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK,
2824 UVERBS_ATTR_SIZE(1, sizeof(struct mlx5_ib_match_params)),
2825 UA_MANDATORY),
2826 UVERBS_ATTR_ENUM_IN(MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE,
2827 mlx5_ib_flow_type,
2828 UA_MANDATORY),
2829 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_FLOW_MATCHER_MATCH_CRITERIA,
2830 UVERBS_ATTR_TYPE(u8),
2831 UA_MANDATORY),
2832 UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS,
2833 enum ib_flow_flags,
2834 UA_OPTIONAL),
2835 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE,
2836 enum mlx5_ib_uapi_flow_table_type,
2837 UA_OPTIONAL));
2838
2839 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
2840 MLX5_IB_METHOD_FLOW_MATCHER_DESTROY,
2841 UVERBS_ATTR_IDR(MLX5_IB_ATTR_FLOW_MATCHER_DESTROY_HANDLE,
2842 MLX5_IB_OBJECT_FLOW_MATCHER,
2843 UVERBS_ACCESS_DESTROY,
2844 UA_MANDATORY));
2845
2846 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_FLOW_MATCHER,
2847 UVERBS_TYPE_ALLOC_IDR(flow_matcher_cleanup),
2848 &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_MATCHER_CREATE),
2849 &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_MATCHER_DESTROY));
2850
2851 DECLARE_UVERBS_NAMED_METHOD(
2852 MLX5_IB_METHOD_STEERING_ANCHOR_CREATE,
2853 UVERBS_ATTR_IDR(MLX5_IB_ATTR_STEERING_ANCHOR_CREATE_HANDLE,
2854 MLX5_IB_OBJECT_STEERING_ANCHOR,
2855 UVERBS_ACCESS_NEW,
2856 UA_MANDATORY),
2857 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_STEERING_ANCHOR_FT_TYPE,
2858 enum mlx5_ib_uapi_flow_table_type,
2859 UA_MANDATORY),
2860 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_STEERING_ANCHOR_PRIORITY,
2861 UVERBS_ATTR_TYPE(u16),
2862 UA_MANDATORY),
2863 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_STEERING_ANCHOR_FT_ID,
2864 UVERBS_ATTR_TYPE(u32),
2865 UA_MANDATORY));
2866
2867 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
2868 MLX5_IB_METHOD_STEERING_ANCHOR_DESTROY,
2869 UVERBS_ATTR_IDR(MLX5_IB_ATTR_STEERING_ANCHOR_DESTROY_HANDLE,
2870 MLX5_IB_OBJECT_STEERING_ANCHOR,
2871 UVERBS_ACCESS_DESTROY,
2872 UA_MANDATORY));
2873
2874 DECLARE_UVERBS_NAMED_OBJECT(
2875 MLX5_IB_OBJECT_STEERING_ANCHOR,
2876 UVERBS_TYPE_ALLOC_IDR(steering_anchor_cleanup),
2877 &UVERBS_METHOD(MLX5_IB_METHOD_STEERING_ANCHOR_CREATE),
2878 &UVERBS_METHOD(MLX5_IB_METHOD_STEERING_ANCHOR_DESTROY));
2879
2880 const struct uapi_definition mlx5_ib_flow_defs[] = {
2881 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
2882 MLX5_IB_OBJECT_FLOW_MATCHER),
2883 UAPI_DEF_CHAIN_OBJ_TREE(
2884 UVERBS_OBJECT_FLOW,
2885 &mlx5_ib_fs),
2886 UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_FLOW_ACTION,
2887 &mlx5_ib_flow_actions),
2888 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
2889 MLX5_IB_OBJECT_STEERING_ANCHOR,
2890 UAPI_DEF_IS_OBJ_SUPPORTED(mlx5_ib_shared_ft_allowed)),
2891 {},
2892 };
2893
2894 static const struct ib_device_ops flow_ops = {
2895 .create_flow = mlx5_ib_create_flow,
2896 .destroy_flow = mlx5_ib_destroy_flow,
2897 .destroy_flow_action = mlx5_ib_destroy_flow_action,
2898 };
2899
mlx5_ib_fs_init(struct mlx5_ib_dev * dev)2900 int mlx5_ib_fs_init(struct mlx5_ib_dev *dev)
2901 {
2902 dev->flow_db = kzalloc(sizeof(*dev->flow_db), GFP_KERNEL);
2903
2904 if (!dev->flow_db)
2905 return -ENOMEM;
2906
2907 mutex_init(&dev->flow_db->lock);
2908
2909 ib_set_device_ops(&dev->ib_dev, &flow_ops);
2910 return 0;
2911 }
2912