1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
|
/*-
* BSD LICENSE
*
* Copyright 2015 6WIND S.A.
* Copyright 2015 Mellanox.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of 6WIND S.A. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stddef.h>
#include <assert.h>
#include <stdint.h>
#include <string.h>
#include <errno.h>
/* Verbs header. */
/* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
#ifdef PEDANTIC
#pragma GCC diagnostic ignored "-Wpedantic"
#endif
#include <infiniband/verbs.h>
#ifdef PEDANTIC
#pragma GCC diagnostic error "-Wpedantic"
#endif
/* DPDK headers don't like -pedantic. */
#ifdef PEDANTIC
#pragma GCC diagnostic ignored "-Wpedantic"
#endif
#include <rte_ether.h>
#include <rte_malloc.h>
#include <rte_ethdev.h>
#include <rte_common.h>
#include <rte_flow.h>
#include <rte_flow_driver.h>
#ifdef PEDANTIC
#pragma GCC diagnostic error "-Wpedantic"
#endif
#include "mlx5.h"
#include "mlx5_rxtx.h"
struct fdir_flow_desc {
uint16_t dst_port;
uint16_t src_port;
uint32_t src_ip[4];
uint32_t dst_ip[4];
uint8_t mac[6];
uint16_t vlan_tag;
enum hash_rxq_type type;
};
struct mlx5_fdir_filter {
LIST_ENTRY(mlx5_fdir_filter) next;
uint16_t queue; /* Queue assigned to if FDIR match. */
enum rte_eth_fdir_behavior behavior;
struct fdir_flow_desc desc;
struct ibv_exp_flow *flow;
};
LIST_HEAD(fdir_filter_list, mlx5_fdir_filter);
/**
* Convert struct rte_eth_fdir_filter to mlx5 filter descriptor.
*
* @param[in] fdir_filter
* DPDK filter structure to convert.
* @param[out] desc
* Resulting mlx5 filter descriptor.
* @param mode
* Flow director mode.
*/
static void
fdir_filter_to_flow_desc(const struct rte_eth_fdir_filter *fdir_filter,
struct fdir_flow_desc *desc, enum rte_fdir_mode mode)
{
/* Initialize descriptor. */
memset(desc, 0, sizeof(*desc));
/* Set VLAN ID. */
desc->vlan_tag = fdir_filter->input.flow_ext.vlan_tci;
/* Set MAC address. */
if (mode == RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
rte_memcpy(desc->mac,
fdir_filter->input.flow.mac_vlan_flow.mac_addr.
addr_bytes,
sizeof(desc->mac));
desc->type = HASH_RXQ_ETH;
return;
}
/* Set mode */
switch (fdir_filter->input.flow_type) {
case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
desc->type = HASH_RXQ_UDPV4;
break;
case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
desc->type = HASH_RXQ_TCPV4;
break;
case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
desc->type = HASH_RXQ_IPV4;
break;
case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
desc->type = HASH_RXQ_UDPV6;
break;
case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
desc->type = HASH_RXQ_TCPV6;
break;
case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
desc->type = HASH_RXQ_IPV6;
break;
default:
break;
}
/* Set flow values */
switch (fdir_filter->input.flow_type) {
case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
desc->src_port = fdir_filter->input.flow.udp4_flow.src_port;
desc->dst_port = fdir_filter->input.flow.udp4_flow.dst_port;
/* fallthrough */
case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
desc->src_ip[0] = fdir_filter->input.flow.ip4_flow.src_ip;
desc->dst_ip[0] = fdir_filter->input.flow.ip4_flow.dst_ip;
break;
case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
desc->src_port = fdir_filter->input.flow.udp6_flow.src_port;
desc->dst_port = fdir_filter->input.flow.udp6_flow.dst_port;
/* Fall through. */
case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
rte_memcpy(desc->src_ip,
fdir_filter->input.flow.ipv6_flow.src_ip,
sizeof(desc->src_ip));
rte_memcpy(desc->dst_ip,
fdir_filter->input.flow.ipv6_flow.dst_ip,
sizeof(desc->dst_ip));
break;
default:
break;
}
}
/**
* Check if two flow descriptors overlap according to configured mask.
*
* @param priv
* Private structure that provides flow director mask.
* @param desc1
* First flow descriptor to compare.
* @param desc2
* Second flow descriptor to compare.
*
* @return
* Nonzero if descriptors overlap.
*/
static int
priv_fdir_overlap(const struct priv *priv,
const struct fdir_flow_desc *desc1,
const struct fdir_flow_desc *desc2)
{
const struct rte_eth_fdir_masks *mask =
&priv->dev->data->dev_conf.fdir_conf.mask;
unsigned int i;
if (desc1->type != desc2->type)
return 0;
/* Ignore non masked bits. */
for (i = 0; i != RTE_DIM(desc1->mac); ++i)
if ((desc1->mac[i] & mask->mac_addr_byte_mask) !=
(desc2->mac[i] & mask->mac_addr_byte_mask))
return 0;
if (((desc1->src_port & mask->src_port_mask) !=
(desc2->src_port & mask->src_port_mask)) ||
((desc1->dst_port & mask->dst_port_mask) !=
(desc2->dst_port & mask->dst_port_mask)))
return 0;
switch (desc1->type) {
case HASH_RXQ_IPV4:
case HASH_RXQ_UDPV4:
case HASH_RXQ_TCPV4:
if (((desc1->src_ip[0] & mask->ipv4_mask.src_ip) !=
(desc2->src_ip[0] & mask->ipv4_mask.src_ip)) ||
((desc1->dst_ip[0] & mask->ipv4_mask.dst_ip) !=
(desc2->dst_ip[0] & mask->ipv4_mask.dst_ip)))
return 0;
break;
case HASH_RXQ_IPV6:
case HASH_RXQ_UDPV6:
case HASH_RXQ_TCPV6:
for (i = 0; i != RTE_DIM(desc1->src_ip); ++i)
if (((desc1->src_ip[i] & mask->ipv6_mask.src_ip[i]) !=
(desc2->src_ip[i] & mask->ipv6_mask.src_ip[i])) ||
((desc1->dst_ip[i] & mask->ipv6_mask.dst_ip[i]) !=
(desc2->dst_ip[i] & mask->ipv6_mask.dst_ip[i])))
return 0;
break;
default:
break;
}
return 1;
}
/**
* Create flow director steering rule for a specific filter.
*
* @param priv
* Private structure.
* @param mlx5_fdir_filter
* Filter to create a steering rule for.
* @param fdir_queue
* Flow director queue for matching packets.
*
* @return
* 0 on success, errno value on failure.
*/
static int
priv_fdir_flow_add(struct priv *priv,
struct mlx5_fdir_filter *mlx5_fdir_filter,
struct fdir_queue *fdir_queue)
{
struct ibv_exp_flow *flow;
struct fdir_flow_desc *desc = &mlx5_fdir_filter->desc;
enum rte_fdir_mode fdir_mode =
priv->dev->data->dev_conf.fdir_conf.mode;
struct rte_eth_fdir_masks *mask =
&priv->dev->data->dev_conf.fdir_conf.mask;
FLOW_ATTR_SPEC_ETH(data, priv_flow_attr(priv, NULL, 0, desc->type));
struct ibv_exp_flow_attr *attr = &data->attr;
uintptr_t spec_offset = (uintptr_t)&data->spec;
struct ibv_exp_flow_spec_eth *spec_eth;
struct ibv_exp_flow_spec_ipv4 *spec_ipv4;
struct ibv_exp_flow_spec_ipv6 *spec_ipv6;
struct ibv_exp_flow_spec_tcp_udp *spec_tcp_udp;
struct mlx5_fdir_filter *iter_fdir_filter;
unsigned int i;
/* Abort if an existing flow overlaps this one to avoid packet
* duplication, even if it targets another queue. */
LIST_FOREACH(iter_fdir_filter, priv->fdir_filter_list, next)
if ((iter_fdir_filter != mlx5_fdir_filter) &&
(iter_fdir_filter->flow != NULL) &&
(priv_fdir_overlap(priv,
&mlx5_fdir_filter->desc,
&iter_fdir_filter->desc)))
return EEXIST;
/*
* No padding must be inserted by the compiler between attr and spec.
* This layout is expected by libibverbs.
*/
assert(((uint8_t *)attr + sizeof(*attr)) == (uint8_t *)spec_offset);
priv_flow_attr(priv, attr, sizeof(data), desc->type);
/* Set Ethernet spec */
spec_eth = (struct ibv_exp_flow_spec_eth *)spec_offset;
/* The first specification must be Ethernet. */
assert(spec_eth->type == IBV_EXP_FLOW_SPEC_ETH);
assert(spec_eth->size == sizeof(*spec_eth));
/* VLAN ID */
spec_eth->val.vlan_tag = desc->vlan_tag & mask->vlan_tci_mask;
spec_eth->mask.vlan_tag = mask->vlan_tci_mask;
/* Update priority */
attr->priority = 2;
if (fdir_mode == RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
/* MAC Address */
for (i = 0; i != RTE_DIM(spec_eth->mask.dst_mac); ++i) {
spec_eth->val.dst_mac[i] =
desc->mac[i] & mask->mac_addr_byte_mask;
spec_eth->mask.dst_mac[i] = mask->mac_addr_byte_mask;
}
goto create_flow;
}
switch (desc->type) {
case HASH_RXQ_IPV4:
case HASH_RXQ_UDPV4:
case HASH_RXQ_TCPV4:
spec_offset += spec_eth->size;
/* Set IP spec */
spec_ipv4 = (struct ibv_exp_flow_spec_ipv4 *)spec_offset;
/* The second specification must be IP. */
assert(spec_ipv4->type == IBV_EXP_FLOW_SPEC_IPV4);
assert(spec_ipv4->size == sizeof(*spec_ipv4));
spec_ipv4->val.src_ip =
desc->src_ip[0] & mask->ipv4_mask.src_ip;
spec_ipv4->val.dst_ip =
desc->dst_ip[0] & mask->ipv4_mask.dst_ip;
spec_ipv4->mask.src_ip = mask->ipv4_mask.src_ip;
spec_ipv4->mask.dst_ip = mask->ipv4_mask.dst_ip;
/* Update priority */
attr->priority = 1;
if (desc->type == HASH_RXQ_IPV4)
goto create_flow;
spec_offset += spec_ipv4->size;
break;
case HASH_RXQ_IPV6:
case HASH_RXQ_UDPV6:
case HASH_RXQ_TCPV6:
spec_offset += spec_eth->size;
/* Set IP spec */
spec_ipv6 = (struct ibv_exp_flow_spec_ipv6 *)spec_offset;
/* The second specification must be IP. */
assert(spec_ipv6->type == IBV_EXP_FLOW_SPEC_IPV6);
assert(spec_ipv6->size == sizeof(*spec_ipv6));
for (i = 0; i != RTE_DIM(desc->src_ip); ++i) {
((uint32_t *)spec_ipv6->val.src_ip)[i] =
desc->src_ip[i] & mask->ipv6_mask.src_ip[i];
((uint32_t *)spec_ipv6->val.dst_ip)[i] =
desc->dst_ip[i] & mask->ipv6_mask.dst_ip[i];
}
rte_memcpy(spec_ipv6->mask.src_ip,
mask->ipv6_mask.src_ip,
sizeof(spec_ipv6->mask.src_ip));
rte_memcpy(spec_ipv6->mask.dst_ip,
mask->ipv6_mask.dst_ip,
sizeof(spec_ipv6->mask.dst_ip));
/* Update priority */
attr->priority = 1;
if (desc->type == HASH_RXQ_IPV6)
goto create_flow;
spec_offset += spec_ipv6->size;
break;
default:
ERROR("invalid flow attribute type");
return EINVAL;
}
/* Set TCP/UDP flow specification. */
spec_tcp_udp = (struct ibv_exp_flow_spec_tcp_udp *)spec_offset;
/* The third specification must be TCP/UDP. */
assert(spec_tcp_udp->type == IBV_EXP_FLOW_SPEC_TCP ||
spec_tcp_udp->type == IBV_EXP_FLOW_SPEC_UDP);
assert(spec_tcp_udp->size == sizeof(*spec_tcp_udp));
spec_tcp_udp->val.src_port = desc->src_port & mask->src_port_mask;
spec_tcp_udp->val.dst_port = desc->dst_port & mask->dst_port_mask;
spec_tcp_udp->mask.src_port = mask->src_port_mask;
spec_tcp_udp->mask.dst_port = mask->dst_port_mask;
/* Update priority */
attr->priority = 0;
create_flow:
errno = 0;
flow = ibv_exp_create_flow(fdir_queue->qp, attr);
if (flow == NULL) {
/* It's not clear whether errno is always set in this case. */
ERROR("%p: flow director configuration failed, errno=%d: %s",
(void *)priv, errno,
(errno ? strerror(errno) : "Unknown error"));
if (errno)
return errno;
return EINVAL;
}
DEBUG("%p: added flow director rule (%p)", (void *)priv, (void *)flow);
mlx5_fdir_filter->flow = flow;
return 0;
}
/**
* Destroy a flow director queue.
*
* @param fdir_queue
* Flow director queue to be destroyed.
*/
void
priv_fdir_queue_destroy(struct priv *priv, struct fdir_queue *fdir_queue)
{
struct mlx5_fdir_filter *fdir_filter;
/* Disable filter flows still applying to this queue. */
LIST_FOREACH(fdir_filter, priv->fdir_filter_list, next) {
unsigned int idx = fdir_filter->queue;
struct rxq_ctrl *rxq_ctrl =
container_of((*priv->rxqs)[idx], struct rxq_ctrl, rxq);
assert(idx < priv->rxqs_n);
if (fdir_queue == rxq_ctrl->fdir_queue &&
fdir_filter->flow != NULL) {
claim_zero(ibv_exp_destroy_flow(fdir_filter->flow));
fdir_filter->flow = NULL;
}
}
assert(fdir_queue->qp);
claim_zero(ibv_destroy_qp(fdir_queue->qp));
assert(fdir_queue->ind_table);
claim_zero(ibv_exp_destroy_rwq_ind_table(fdir_queue->ind_table));
if (fdir_queue->wq)
claim_zero(ibv_exp_destroy_wq(fdir_queue->wq));
if (fdir_queue->cq)
claim_zero(ibv_destroy_cq(fdir_queue->cq));
#ifndef NDEBUG
memset(fdir_queue, 0x2a, sizeof(*fdir_queue));
#endif
rte_free(fdir_queue);
}
/**
* Create a flow director queue.
*
* @param priv
* Private structure.
* @param wq
* Work queue to route matched packets to, NULL if one needs to
* be created.
*
* @return
* Related flow director queue on success, NULL otherwise.
*/
static struct fdir_queue *
priv_fdir_queue_create(struct priv *priv, struct ibv_exp_wq *wq,
unsigned int socket)
{
struct fdir_queue *fdir_queue;
fdir_queue = rte_calloc_socket(__func__, 1, sizeof(*fdir_queue),
0, socket);
if (!fdir_queue) {
ERROR("cannot allocate flow director queue");
return NULL;
}
assert(priv->pd);
assert(priv->ctx);
if (!wq) {
fdir_queue->cq = ibv_exp_create_cq(
priv->ctx, 1, NULL, NULL, 0,
&(struct ibv_exp_cq_init_attr){
.comp_mask = 0,
});
if (!fdir_queue->cq) {
ERROR("cannot create flow director CQ");
goto error;
}
fdir_queue->wq = ibv_exp_create_wq(
priv->ctx,
&(struct ibv_exp_wq_init_attr){
.wq_type = IBV_EXP_WQT_RQ,
.max_recv_wr = 1,
.max_recv_sge = 1,
.pd = priv->pd,
.cq = fdir_queue->cq,
});
if (!fdir_queue->wq) {
ERROR("cannot create flow director WQ");
goto error;
}
wq = fdir_queue->wq;
}
fdir_queue->ind_table = ibv_exp_create_rwq_ind_table(
priv->ctx,
&(struct ibv_exp_rwq_ind_table_init_attr){
.pd = priv->pd,
.log_ind_tbl_size = 0,
.ind_tbl = &wq,
.comp_mask = 0,
});
if (!fdir_queue->ind_table) {
ERROR("cannot create flow director indirection table");
goto error;
}
fdir_queue->qp = ibv_exp_create_qp(
priv->ctx,
&(struct ibv_exp_qp_init_attr){
.qp_type = IBV_QPT_RAW_PACKET,
.comp_mask =
IBV_EXP_QP_INIT_ATTR_PD |
IBV_EXP_QP_INIT_ATTR_PORT |
IBV_EXP_QP_INIT_ATTR_RX_HASH,
.pd = priv->pd,
.rx_hash_conf = &(struct ibv_exp_rx_hash_conf){
.rx_hash_function =
IBV_EXP_RX_HASH_FUNC_TOEPLITZ,
.rx_hash_key_len = rss_hash_default_key_len,
.rx_hash_key = rss_hash_default_key,
.rx_hash_fields_mask = 0,
.rwq_ind_tbl = fdir_queue->ind_table,
},
.port_num = priv->port,
});
if (!fdir_queue->qp) {
ERROR("cannot create flow director hash RX QP");
goto error;
}
return fdir_queue;
error:
assert(fdir_queue);
assert(!fdir_queue->qp);
if (fdir_queue->ind_table)
claim_zero(ibv_exp_destroy_rwq_ind_table
(fdir_queue->ind_table));
if (fdir_queue->wq)
claim_zero(ibv_exp_destroy_wq(fdir_queue->wq));
if (fdir_queue->cq)
claim_zero(ibv_destroy_cq(fdir_queue->cq));
rte_free(fdir_queue);
return NULL;
}
/**
* Get flow director queue for a specific RX queue, create it in case
* it does not exist.
*
* @param priv
* Private structure.
* @param idx
* RX queue index.
*
* @return
* Related flow director queue on success, NULL otherwise.
*/
static struct fdir_queue *
priv_get_fdir_queue(struct priv *priv, uint16_t idx)
{
struct rxq_ctrl *rxq_ctrl =
container_of((*priv->rxqs)[idx], struct rxq_ctrl, rxq);
struct fdir_queue *fdir_queue = rxq_ctrl->fdir_queue;
assert(rxq_ctrl->wq);
if (fdir_queue == NULL) {
fdir_queue = priv_fdir_queue_create(priv, rxq_ctrl->wq,
rxq_ctrl->socket);
rxq_ctrl->fdir_queue = fdir_queue;
}
return fdir_queue;
}
/**
* Get or flow director drop queue. Create it if it does not exist.
*
* @param priv
* Private structure.
*
* @return
* Flow director drop queue on success, NULL otherwise.
*/
static struct fdir_queue *
priv_get_fdir_drop_queue(struct priv *priv)
{
struct fdir_queue *fdir_queue = priv->fdir_drop_queue;
if (fdir_queue == NULL) {
unsigned int socket = SOCKET_ID_ANY;
/* Select a known NUMA socket if possible. */
if (priv->rxqs_n && (*priv->rxqs)[0])
socket = container_of((*priv->rxqs)[0],
struct rxq_ctrl, rxq)->socket;
fdir_queue = priv_fdir_queue_create(priv, NULL, socket);
priv->fdir_drop_queue = fdir_queue;
}
return fdir_queue;
}
/**
* Enable flow director filter and create steering rules.
*
* @param priv
* Private structure.
* @param mlx5_fdir_filter
* Filter to create steering rule for.
*
* @return
* 0 on success, errno value on failure.
*/
static int
priv_fdir_filter_enable(struct priv *priv,
struct mlx5_fdir_filter *mlx5_fdir_filter)
{
struct fdir_queue *fdir_queue;
/* Check if flow already exists. */
if (mlx5_fdir_filter->flow != NULL)
return 0;
/* Get fdir_queue for specific queue. */
if (mlx5_fdir_filter->behavior == RTE_ETH_FDIR_REJECT)
fdir_queue = priv_get_fdir_drop_queue(priv);
else
fdir_queue = priv_get_fdir_queue(priv,
mlx5_fdir_filter->queue);
if (fdir_queue == NULL) {
ERROR("failed to create flow director rxq for queue %d",
mlx5_fdir_filter->queue);
return EINVAL;
}
/* Create flow */
return priv_fdir_flow_add(priv, mlx5_fdir_filter, fdir_queue);
}
/**
* Initialize flow director filters list.
*
* @param priv
* Private structure.
*
* @return
* 0 on success, errno value on failure.
*/
int
fdir_init_filters_list(struct priv *priv)
{
/* Filter list initialization should be done only once. */
if (priv->fdir_filter_list)
return 0;
/* Create filters list. */
priv->fdir_filter_list =
rte_calloc(__func__, 1, sizeof(*priv->fdir_filter_list), 0);
if (priv->fdir_filter_list == NULL) {
int err = ENOMEM;
ERROR("cannot allocate flow director filter list: %s",
strerror(err));
return err;
}
LIST_INIT(priv->fdir_filter_list);
return 0;
}
/**
* Flush all filters.
*
* @param priv
* Private structure.
*/
static void
priv_fdir_filter_flush(struct priv *priv)
{
struct mlx5_fdir_filter *mlx5_fdir_filter;
while ((mlx5_fdir_filter = LIST_FIRST(priv->fdir_filter_list))) {
struct ibv_exp_flow *flow = mlx5_fdir_filter->flow;
DEBUG("%p: flushing flow director filter %p",
(void *)priv, (void *)mlx5_fdir_filter);
LIST_REMOVE(mlx5_fdir_filter, next);
if (flow != NULL)
claim_zero(ibv_exp_destroy_flow(flow));
rte_free(mlx5_fdir_filter);
}
}
/**
* Remove all flow director filters and delete list.
*
* @param priv
* Private structure.
*/
void
priv_fdir_delete_filters_list(struct priv *priv)
{
priv_fdir_filter_flush(priv);
rte_free(priv->fdir_filter_list);
priv->fdir_filter_list = NULL;
}
/**
* Disable flow director, remove all steering rules.
*
* @param priv
* Private structure.
*/
void
priv_fdir_disable(struct priv *priv)
{
unsigned int i;
struct mlx5_fdir_filter *mlx5_fdir_filter;
/* Run on every flow director filter and destroy flow handle. */
LIST_FOREACH(mlx5_fdir_filter, priv->fdir_filter_list, next) {
struct ibv_exp_flow *flow;
/* Only valid elements should be in the list */
assert(mlx5_fdir_filter != NULL);
flow = mlx5_fdir_filter->flow;
/* Destroy flow handle */
if (flow != NULL) {
claim_zero(ibv_exp_destroy_flow(flow));
mlx5_fdir_filter->flow = NULL;
}
}
/* Destroy flow director context in each RX queue. */
for (i = 0; (i != priv->rxqs_n); i++) {
struct rxq_ctrl *rxq_ctrl;
if (!(*priv->rxqs)[i])
continue;
rxq_ctrl = container_of((*priv->rxqs)[i], struct rxq_ctrl, rxq);
if (!rxq_ctrl->fdir_queue)
continue;
priv_fdir_queue_destroy(priv, rxq_ctrl->fdir_queue);
rxq_ctrl->fdir_queue = NULL;
}
if (priv->fdir_drop_queue) {
priv_fdir_queue_destroy(priv, priv->fdir_drop_queue);
priv->fdir_drop_queue = NULL;
}
}
/**
* Enable flow director, create steering rules.
*
* @param priv
* Private structure.
*/
void
priv_fdir_enable(struct priv *priv)
{
struct mlx5_fdir_filter *mlx5_fdir_filter;
/* Run on every fdir filter and create flow handle */
LIST_FOREACH(mlx5_fdir_filter, priv->fdir_filter_list, next) {
/* Only valid elements should be in the list */
assert(mlx5_fdir_filter != NULL);
priv_fdir_filter_enable(priv, mlx5_fdir_filter);
}
}
/**
* Find specific filter in list.
*
* @param priv
* Private structure.
* @param fdir_filter
* Flow director filter to find.
*
* @return
* Filter element if found, otherwise NULL.
*/
static struct mlx5_fdir_filter *
priv_find_filter_in_list(struct priv *priv,
const struct rte_eth_fdir_filter *fdir_filter)
{
struct fdir_flow_desc desc;
struct mlx5_fdir_filter *mlx5_fdir_filter;
enum rte_fdir_mode fdir_mode = priv->dev->data->dev_conf.fdir_conf.mode;
/* Get flow director filter to look for. */
fdir_filter_to_flow_desc(fdir_filter, &desc, fdir_mode);
/* Look for the requested element. */
LIST_FOREACH(mlx5_fdir_filter, priv->fdir_filter_list, next) {
/* Only valid elements should be in the list. */
assert(mlx5_fdir_filter != NULL);
/* Return matching filter. */
if (!memcmp(&desc, &mlx5_fdir_filter->desc, sizeof(desc)))
return mlx5_fdir_filter;
}
/* Filter not found */
return NULL;
}
/**
* Add new flow director filter and store it in list.
*
* @param priv
* Private structure.
* @param fdir_filter
* Flow director filter to add.
*
* @return
* 0 on success, errno value on failure.
*/
static int
priv_fdir_filter_add(struct priv *priv,
const struct rte_eth_fdir_filter *fdir_filter)
{
struct mlx5_fdir_filter *mlx5_fdir_filter;
enum rte_fdir_mode fdir_mode = priv->dev->data->dev_conf.fdir_conf.mode;
int err = 0;
/* Validate queue number. */
if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
ERROR("invalid queue number %d", fdir_filter->action.rx_queue);
return EINVAL;
}
/* Duplicate filters are currently unsupported. */
mlx5_fdir_filter = priv_find_filter_in_list(priv, fdir_filter);
if (mlx5_fdir_filter != NULL) {
ERROR("filter already exists");
return EINVAL;
}
/* Create new flow director filter. */
mlx5_fdir_filter =
rte_calloc(__func__, 1, sizeof(*mlx5_fdir_filter), 0);
if (mlx5_fdir_filter == NULL) {
err = ENOMEM;
ERROR("cannot allocate flow director filter: %s",
strerror(err));
return err;
}
/* Set action parameters. */
mlx5_fdir_filter->queue = fdir_filter->action.rx_queue;
mlx5_fdir_filter->behavior = fdir_filter->action.behavior;
/* Convert to mlx5 filter descriptor. */
fdir_filter_to_flow_desc(fdir_filter,
&mlx5_fdir_filter->desc, fdir_mode);
/* Insert new filter into list. */
LIST_INSERT_HEAD(priv->fdir_filter_list, mlx5_fdir_filter, next);
DEBUG("%p: flow director filter %p added",
(void *)priv, (void *)mlx5_fdir_filter);
/* Enable filter immediately if device is started. */
if (priv->started)
err = priv_fdir_filter_enable(priv, mlx5_fdir_filter);
return err;
}
/**
* Update queue for specific filter.
*
* @param priv
* Private structure.
* @param fdir_filter
* Filter to be updated.
*
* @return
* 0 on success, errno value on failure.
*/
static int
priv_fdir_filter_update(struct priv *priv,
const struct rte_eth_fdir_filter *fdir_filter)
{
struct mlx5_fdir_filter *mlx5_fdir_filter;
/* Validate queue number. */
if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
ERROR("invalid queue number %d", fdir_filter->action.rx_queue);
return EINVAL;
}
mlx5_fdir_filter = priv_find_filter_in_list(priv, fdir_filter);
if (mlx5_fdir_filter != NULL) {
struct ibv_exp_flow *flow = mlx5_fdir_filter->flow;
int err = 0;
/* Update queue number. */
mlx5_fdir_filter->queue = fdir_filter->action.rx_queue;
/* Destroy flow handle. */
if (flow != NULL) {
claim_zero(ibv_exp_destroy_flow(flow));
mlx5_fdir_filter->flow = NULL;
}
DEBUG("%p: flow director filter %p updated",
(void *)priv, (void *)mlx5_fdir_filter);
/* Enable filter if device is started. */
if (priv->started)
err = priv_fdir_filter_enable(priv, mlx5_fdir_filter);
return err;
}
/* Filter not found, create it. */
DEBUG("%p: filter not found for update, creating new filter",
(void *)priv);
return priv_fdir_filter_add(priv, fdir_filter);
}
/**
* Delete specific filter.
*
* @param priv
* Private structure.
* @param fdir_filter
* Filter to be deleted.
*
* @return
* 0 on success, errno value on failure.
*/
static int
priv_fdir_filter_delete(struct priv *priv,
const struct rte_eth_fdir_filter *fdir_filter)
{
struct mlx5_fdir_filter *mlx5_fdir_filter;
mlx5_fdir_filter = priv_find_filter_in_list(priv, fdir_filter);
if (mlx5_fdir_filter != NULL) {
struct ibv_exp_flow *flow = mlx5_fdir_filter->flow;
/* Remove element from list. */
LIST_REMOVE(mlx5_fdir_filter, next);
/* Destroy flow handle. */
if (flow != NULL) {
claim_zero(ibv_exp_destroy_flow(flow));
mlx5_fdir_filter->flow = NULL;
}
DEBUG("%p: flow director filter %p deleted",
(void *)priv, (void *)mlx5_fdir_filter);
/* Delete filter. */
rte_free(mlx5_fdir_filter);
return 0;
}
ERROR("%p: flow director delete failed, cannot find filter",
(void *)priv);
return EINVAL;
}
/**
* Get flow director information.
*
* @param priv
* Private structure.
* @param[out] fdir_info
* Resulting flow director information.
*/
static void
priv_fdir_info_get(struct priv *priv, struct rte_eth_fdir_info *fdir_info)
{
struct rte_eth_fdir_masks *mask =
&priv->dev->data->dev_conf.fdir_conf.mask;
fdir_info->mode = priv->dev->data->dev_conf.fdir_conf.mode;
fdir_info->guarant_spc = 0;
rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
fdir_info->max_flexpayload = 0;
fdir_info->flow_types_mask[0] = 0;
fdir_info->flex_payload_unit = 0;
fdir_info->max_flex_payload_segment_num = 0;
fdir_info->flex_payload_limit = 0;
memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
}
/**
* Deal with flow director operations.
*
* @param priv
* Pointer to private structure.
* @param filter_op
* Operation to perform.
* @param arg
* Pointer to operation-specific structure.
*
* @return
* 0 on success, errno value on failure.
*/
static int
priv_fdir_ctrl_func(struct priv *priv, enum rte_filter_op filter_op, void *arg)
{
enum rte_fdir_mode fdir_mode =
priv->dev->data->dev_conf.fdir_conf.mode;
int ret = 0;
if (filter_op == RTE_ETH_FILTER_NOP)
return 0;
if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
ERROR("%p: flow director mode %d not supported",
(void *)priv, fdir_mode);
return EINVAL;
}
switch (filter_op) {
case RTE_ETH_FILTER_ADD:
ret = priv_fdir_filter_add(priv, arg);
break;
case RTE_ETH_FILTER_UPDATE:
ret = priv_fdir_filter_update(priv, arg);
break;
case RTE_ETH_FILTER_DELETE:
ret = priv_fdir_filter_delete(priv, arg);
break;
case RTE_ETH_FILTER_FLUSH:
priv_fdir_filter_flush(priv);
break;
case RTE_ETH_FILTER_INFO:
priv_fdir_info_get(priv, arg);
break;
default:
DEBUG("%p: unknown operation %u", (void *)priv, filter_op);
ret = EINVAL;
break;
}
return ret;
}
static const struct rte_flow_ops mlx5_flow_ops = {
.validate = mlx5_flow_validate,
.create = mlx5_flow_create,
.destroy = mlx5_flow_destroy,
.flush = mlx5_flow_flush,
.query = NULL,
.isolate = mlx5_flow_isolate,
};
/**
* Manage filter operations.
*
* @param dev
* Pointer to Ethernet device structure.
* @param filter_type
* Filter type.
* @param filter_op
* Operation to perform.
* @param arg
* Pointer to operation-specific structure.
*
* @return
* 0 on success, negative errno value on failure.
*/
int
mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
enum rte_filter_type filter_type,
enum rte_filter_op filter_op,
void *arg)
{
int ret = EINVAL;
struct priv *priv = dev->data->dev_private;
switch (filter_type) {
case RTE_ETH_FILTER_GENERIC:
if (filter_op != RTE_ETH_FILTER_GET)
return -EINVAL;
*(const void **)arg = &mlx5_flow_ops;
return 0;
case RTE_ETH_FILTER_FDIR:
priv_lock(priv);
ret = priv_fdir_ctrl_func(priv, filter_op, arg);
priv_unlock(priv);
break;
default:
ERROR("%p: filter type (%d) not supported",
(void *)dev, filter_type);
break;
}
return -ret;
}
|