1// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2/*
3 * Copyright (c) 2013-2020, Mellanox Technologies inc. All rights reserved.
4 */
5
6#include "mlx5_ib.h"
7#include <linux/mlx5/eswitch.h>
8#include <linux/mlx5/vport.h>
9#include "counters.h"
10#include "ib_rep.h"
11#include "qp.h"
12
13struct mlx5_ib_counter {
14 const char *name;
15 size_t offset;
16 u32 type;
17};
18
19#define INIT_Q_COUNTER(_name) \
20 { .name = #_name, .offset = MLX5_BYTE_OFF(query_q_counter_out, _name)}
21
22#define INIT_VPORT_Q_COUNTER(_name) \
23 { .name = "vport_" #_name, .offset = \
24 MLX5_BYTE_OFF(query_q_counter_out, _name)}
25
26static const struct mlx5_ib_counter basic_q_cnts[] = {
27 INIT_Q_COUNTER(rx_write_requests),
28 INIT_Q_COUNTER(rx_read_requests),
29 INIT_Q_COUNTER(rx_atomic_requests),
30 INIT_Q_COUNTER(rx_dct_connect),
31 INIT_Q_COUNTER(out_of_buffer),
32};
33
34static const struct mlx5_ib_counter out_of_seq_q_cnts[] = {
35 INIT_Q_COUNTER(out_of_sequence),
36};
37
38static const struct mlx5_ib_counter retrans_q_cnts[] = {
39 INIT_Q_COUNTER(duplicate_request),
40 INIT_Q_COUNTER(rnr_nak_retry_err),
41 INIT_Q_COUNTER(packet_seq_err),
42 INIT_Q_COUNTER(implied_nak_seq_err),
43 INIT_Q_COUNTER(local_ack_timeout_err),
44};
45
46static const struct mlx5_ib_counter vport_basic_q_cnts[] = {
47 INIT_VPORT_Q_COUNTER(rx_write_requests),
48 INIT_VPORT_Q_COUNTER(rx_read_requests),
49 INIT_VPORT_Q_COUNTER(rx_atomic_requests),
50 INIT_VPORT_Q_COUNTER(rx_dct_connect),
51 INIT_VPORT_Q_COUNTER(out_of_buffer),
52};
53
54static const struct mlx5_ib_counter vport_out_of_seq_q_cnts[] = {
55 INIT_VPORT_Q_COUNTER(out_of_sequence),
56};
57
58static const struct mlx5_ib_counter vport_retrans_q_cnts[] = {
59 INIT_VPORT_Q_COUNTER(duplicate_request),
60 INIT_VPORT_Q_COUNTER(rnr_nak_retry_err),
61 INIT_VPORT_Q_COUNTER(packet_seq_err),
62 INIT_VPORT_Q_COUNTER(implied_nak_seq_err),
63 INIT_VPORT_Q_COUNTER(local_ack_timeout_err),
64};
65
66#define INIT_CONG_COUNTER(_name) \
67 { .name = #_name, .offset = \
68 MLX5_BYTE_OFF(query_cong_statistics_out, _name ## _high)}
69
70static const struct mlx5_ib_counter cong_cnts[] = {
71 INIT_CONG_COUNTER(rp_cnp_ignored),
72 INIT_CONG_COUNTER(rp_cnp_handled),
73 INIT_CONG_COUNTER(np_ecn_marked_roce_packets),
74 INIT_CONG_COUNTER(np_cnp_sent),
75};
76
77static const struct mlx5_ib_counter extended_err_cnts[] = {
78 INIT_Q_COUNTER(resp_local_length_error),
79 INIT_Q_COUNTER(resp_cqe_error),
80 INIT_Q_COUNTER(req_cqe_error),
81 INIT_Q_COUNTER(req_remote_invalid_request),
82 INIT_Q_COUNTER(req_remote_access_errors),
83 INIT_Q_COUNTER(resp_remote_access_errors),
84 INIT_Q_COUNTER(resp_cqe_flush_error),
85 INIT_Q_COUNTER(req_cqe_flush_error),
86};
87
88static const struct mlx5_ib_counter roce_accl_cnts[] = {
89 INIT_Q_COUNTER(roce_adp_retrans),
90 INIT_Q_COUNTER(roce_adp_retrans_to),
91 INIT_Q_COUNTER(roce_slow_restart),
92 INIT_Q_COUNTER(roce_slow_restart_cnps),
93 INIT_Q_COUNTER(roce_slow_restart_trans),
94};
95
96static const struct mlx5_ib_counter vport_extended_err_cnts[] = {
97 INIT_VPORT_Q_COUNTER(resp_local_length_error),
98 INIT_VPORT_Q_COUNTER(resp_cqe_error),
99 INIT_VPORT_Q_COUNTER(req_cqe_error),
100 INIT_VPORT_Q_COUNTER(req_remote_invalid_request),
101 INIT_VPORT_Q_COUNTER(req_remote_access_errors),
102 INIT_VPORT_Q_COUNTER(resp_remote_access_errors),
103 INIT_VPORT_Q_COUNTER(resp_cqe_flush_error),
104 INIT_VPORT_Q_COUNTER(req_cqe_flush_error),
105};
106
107static const struct mlx5_ib_counter vport_roce_accl_cnts[] = {
108 INIT_VPORT_Q_COUNTER(roce_adp_retrans),
109 INIT_VPORT_Q_COUNTER(roce_adp_retrans_to),
110 INIT_VPORT_Q_COUNTER(roce_slow_restart),
111 INIT_VPORT_Q_COUNTER(roce_slow_restart_cnps),
112 INIT_VPORT_Q_COUNTER(roce_slow_restart_trans),
113};
114
115#define INIT_EXT_PPCNT_COUNTER(_name) \
116 { .name = #_name, .offset = \
117 MLX5_BYTE_OFF(ppcnt_reg, \
118 counter_set.eth_extended_cntrs_grp_data_layout._name##_high)}
119
120static const struct mlx5_ib_counter ext_ppcnt_cnts[] = {
121 INIT_EXT_PPCNT_COUNTER(rx_icrc_encapsulated),
122};
123
124#define INIT_OP_COUNTER(_name, _type) \
125 { .name = #_name, .type = MLX5_IB_OPCOUNTER_##_type}
126
127static const struct mlx5_ib_counter basic_op_cnts[] = {
128 INIT_OP_COUNTER(cc_rx_ce_pkts, CC_RX_CE_PKTS),
129};
130
131static const struct mlx5_ib_counter rdmarx_cnp_op_cnts[] = {
132 INIT_OP_COUNTER(cc_rx_cnp_pkts, CC_RX_CNP_PKTS),
133};
134
135static const struct mlx5_ib_counter rdmatx_cnp_op_cnts[] = {
136 INIT_OP_COUNTER(cc_tx_cnp_pkts, CC_TX_CNP_PKTS),
137};
138
139static int mlx5_ib_read_counters(struct ib_counters *counters,
140 struct ib_counters_read_attr *read_attr,
141 struct uverbs_attr_bundle *attrs)
142{
143 struct mlx5_ib_mcounters *mcounters = to_mcounters(ibcntrs: counters);
144 struct mlx5_read_counters_attr mread_attr = {};
145 struct mlx5_ib_flow_counters_desc *desc;
146 int ret, i;
147
148 mutex_lock(&mcounters->mcntrs_mutex);
149 if (mcounters->cntrs_max_index > read_attr->ncounters) {
150 ret = -EINVAL;
151 goto err_bound;
152 }
153
154 mread_attr.out = kcalloc(n: mcounters->counters_num, size: sizeof(u64),
155 GFP_KERNEL);
156 if (!mread_attr.out) {
157 ret = -ENOMEM;
158 goto err_bound;
159 }
160
161 mread_attr.hw_cntrs_hndl = mcounters->hw_cntrs_hndl;
162 mread_attr.flags = read_attr->flags;
163 ret = mcounters->read_counters(counters->device, &mread_attr);
164 if (ret)
165 goto err_read;
166
167 /* do the pass over the counters data array to assign according to the
168 * descriptions and indexing pairs
169 */
170 desc = mcounters->counters_data;
171 for (i = 0; i < mcounters->ncounters; i++)
172 read_attr->counters_buff[desc[i].index] += mread_attr.out[desc[i].description];
173
174err_read:
175 kfree(objp: mread_attr.out);
176err_bound:
177 mutex_unlock(lock: &mcounters->mcntrs_mutex);
178 return ret;
179}
180
181static int mlx5_ib_destroy_counters(struct ib_counters *counters)
182{
183 struct mlx5_ib_mcounters *mcounters = to_mcounters(ibcntrs: counters);
184
185 mlx5_ib_counters_clear_description(counters);
186 if (mcounters->hw_cntrs_hndl)
187 mlx5_fc_destroy(dev: to_mdev(ibdev: counters->device)->mdev,
188 counter: mcounters->hw_cntrs_hndl);
189 return 0;
190}
191
192static int mlx5_ib_create_counters(struct ib_counters *counters,
193 struct uverbs_attr_bundle *attrs)
194{
195 struct mlx5_ib_mcounters *mcounters = to_mcounters(ibcntrs: counters);
196
197 mutex_init(&mcounters->mcntrs_mutex);
198 return 0;
199}
200
201static bool vport_qcounters_supported(struct mlx5_ib_dev *dev)
202{
203 return MLX5_CAP_GEN(dev->mdev, q_counter_other_vport) &&
204 MLX5_CAP_GEN(dev->mdev, q_counter_aggregation);
205}
206
207static const struct mlx5_ib_counters *get_counters(struct mlx5_ib_dev *dev,
208 u32 port_num)
209{
210 if ((is_mdev_switchdev_mode(dev: dev->mdev) &&
211 !vport_qcounters_supported(dev)) || !port_num)
212 return &dev->port[0].cnts;
213
214 return is_mdev_switchdev_mode(dev: dev->mdev) ?
215 &dev->port[1].cnts : &dev->port[port_num - 1].cnts;
216}
217
218/**
219 * mlx5_ib_get_counters_id - Returns counters id to use for device+port
220 * @dev: Pointer to mlx5 IB device
221 * @port_num: Zero based port number
222 *
223 * mlx5_ib_get_counters_id() Returns counters set id to use for given
224 * device port combination in switchdev and non switchdev mode of the
225 * parent device.
226 */
227u16 mlx5_ib_get_counters_id(struct mlx5_ib_dev *dev, u32 port_num)
228{
229 const struct mlx5_ib_counters *cnts = get_counters(dev, port_num: port_num + 1);
230
231 return cnts->set_id;
232}
233
234static struct rdma_hw_stats *do_alloc_stats(const struct mlx5_ib_counters *cnts)
235{
236 struct rdma_hw_stats *stats;
237 u32 num_hw_counters;
238 int i;
239
240 num_hw_counters = cnts->num_q_counters + cnts->num_cong_counters +
241 cnts->num_ext_ppcnt_counters;
242 stats = rdma_alloc_hw_stats_struct(descs: cnts->descs,
243 num_counters: num_hw_counters +
244 cnts->num_op_counters,
245 RDMA_HW_STATS_DEFAULT_LIFESPAN);
246 if (!stats)
247 return NULL;
248
249 for (i = 0; i < cnts->num_op_counters; i++)
250 set_bit(nr: num_hw_counters + i, addr: stats->is_disabled);
251
252 return stats;
253}
254
255static struct rdma_hw_stats *
256mlx5_ib_alloc_hw_device_stats(struct ib_device *ibdev)
257{
258 struct mlx5_ib_dev *dev = to_mdev(ibdev);
259 const struct mlx5_ib_counters *cnts = &dev->port[0].cnts;
260
261 return do_alloc_stats(cnts);
262}
263
264static struct rdma_hw_stats *
265mlx5_ib_alloc_hw_port_stats(struct ib_device *ibdev, u32 port_num)
266{
267 struct mlx5_ib_dev *dev = to_mdev(ibdev);
268 const struct mlx5_ib_counters *cnts = get_counters(dev, port_num);
269
270 return do_alloc_stats(cnts);
271}
272
273static int mlx5_ib_query_q_counters(struct mlx5_core_dev *mdev,
274 const struct mlx5_ib_counters *cnts,
275 struct rdma_hw_stats *stats,
276 u16 set_id)
277{
278 u32 out[MLX5_ST_SZ_DW(query_q_counter_out)] = {};
279 u32 in[MLX5_ST_SZ_DW(query_q_counter_in)] = {};
280 __be32 val;
281 int ret, i;
282
283 MLX5_SET(query_q_counter_in, in, opcode, MLX5_CMD_OP_QUERY_Q_COUNTER);
284 MLX5_SET(query_q_counter_in, in, counter_set_id, set_id);
285 ret = mlx5_cmd_exec_inout(mdev, query_q_counter, in, out);
286 if (ret)
287 return ret;
288
289 for (i = 0; i < cnts->num_q_counters; i++) {
290 val = *(__be32 *)((void *)out + cnts->offsets[i]);
291 stats->value[i] = (u64)be32_to_cpu(val);
292 }
293
294 return 0;
295}
296
297static int mlx5_ib_query_ext_ppcnt_counters(struct mlx5_ib_dev *dev,
298 const struct mlx5_ib_counters *cnts,
299 struct rdma_hw_stats *stats)
300{
301 int offset = cnts->num_q_counters + cnts->num_cong_counters;
302 u32 in[MLX5_ST_SZ_DW(ppcnt_reg)] = {};
303 int sz = MLX5_ST_SZ_BYTES(ppcnt_reg);
304 int ret, i;
305 void *out;
306
307 out = kvzalloc(size: sz, GFP_KERNEL);
308 if (!out)
309 return -ENOMEM;
310
311 MLX5_SET(ppcnt_reg, in, local_port, 1);
312 MLX5_SET(ppcnt_reg, in, grp, MLX5_ETHERNET_EXTENDED_COUNTERS_GROUP);
313 ret = mlx5_core_access_reg(dev: dev->mdev, data_in: in, size_in: sz, data_out: out, size_out: sz, reg_num: MLX5_REG_PPCNT,
314 arg: 0, write: 0);
315 if (ret)
316 goto free;
317
318 for (i = 0; i < cnts->num_ext_ppcnt_counters; i++)
319 stats->value[i + offset] =
320 be64_to_cpup(p: (__be64 *)(out +
321 cnts->offsets[i + offset]));
322free:
323 kvfree(addr: out);
324 return ret;
325}
326
327static int mlx5_ib_query_q_counters_vport(struct mlx5_ib_dev *dev,
328 u32 port_num,
329 const struct mlx5_ib_counters *cnts,
330 struct rdma_hw_stats *stats)
331
332{
333 u32 out[MLX5_ST_SZ_DW(query_q_counter_out)] = {};
334 u32 in[MLX5_ST_SZ_DW(query_q_counter_in)] = {};
335 struct mlx5_core_dev *mdev;
336 __be32 val;
337 int ret, i;
338
339 if (!dev->port[port_num].rep ||
340 dev->port[port_num].rep->vport == MLX5_VPORT_UPLINK)
341 return 0;
342
343 mdev = mlx5_eswitch_get_core_dev(esw: dev->port[port_num].rep->esw);
344 if (!mdev)
345 return -EOPNOTSUPP;
346
347 MLX5_SET(query_q_counter_in, in, opcode, MLX5_CMD_OP_QUERY_Q_COUNTER);
348 MLX5_SET(query_q_counter_in, in, other_vport, 1);
349 MLX5_SET(query_q_counter_in, in, vport_number,
350 dev->port[port_num].rep->vport);
351 MLX5_SET(query_q_counter_in, in, aggregate, 1);
352 ret = mlx5_cmd_exec_inout(mdev, query_q_counter, in, out);
353 if (ret)
354 return ret;
355
356 for (i = 0; i < cnts->num_q_counters; i++) {
357 val = *(__be32 *)((void *)out + cnts->offsets[i]);
358 stats->value[i] = (u64)be32_to_cpu(val);
359 }
360
361 return 0;
362}
363
364static int do_get_hw_stats(struct ib_device *ibdev,
365 struct rdma_hw_stats *stats,
366 u32 port_num, int index)
367{
368 struct mlx5_ib_dev *dev = to_mdev(ibdev);
369 const struct mlx5_ib_counters *cnts = get_counters(dev, port_num);
370 struct mlx5_core_dev *mdev;
371 int ret, num_counters;
372
373 if (!stats)
374 return -EINVAL;
375
376 num_counters = cnts->num_q_counters +
377 cnts->num_cong_counters +
378 cnts->num_ext_ppcnt_counters;
379
380 if (is_mdev_switchdev_mode(dev: dev->mdev) && dev->is_rep && port_num != 0)
381 ret = mlx5_ib_query_q_counters_vport(dev, port_num: port_num - 1, cnts,
382 stats);
383 else
384 ret = mlx5_ib_query_q_counters(mdev: dev->mdev, cnts, stats,
385 set_id: cnts->set_id);
386 if (ret)
387 return ret;
388
389 /* We don't expose device counters over Vports */
390 if (is_mdev_switchdev_mode(dev: dev->mdev) && port_num != 0)
391 goto done;
392
393 if (MLX5_CAP_PCAM_FEATURE(dev->mdev, rx_icrc_encapsulated_counter)) {
394 ret = mlx5_ib_query_ext_ppcnt_counters(dev, cnts, stats);
395 if (ret)
396 return ret;
397 }
398
399 if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) {
400 if (!port_num)
401 port_num = 1;
402 mdev = mlx5_ib_get_native_port_mdev(dev, ib_port_num: port_num, NULL);
403 if (!mdev) {
404 /* If port is not affiliated yet, its in down state
405 * which doesn't have any counters yet, so it would be
406 * zero. So no need to read from the HCA.
407 */
408 goto done;
409 }
410 ret = mlx5_lag_query_cong_counters(dev: dev->mdev,
411 values: stats->value +
412 cnts->num_q_counters,
413 num_counters: cnts->num_cong_counters,
414 offsets: cnts->offsets +
415 cnts->num_q_counters);
416
417 mlx5_ib_put_native_port_mdev(dev, port_num);
418 if (ret)
419 return ret;
420 }
421
422done:
423 return num_counters;
424}
425
426static int do_get_op_stat(struct ib_device *ibdev,
427 struct rdma_hw_stats *stats,
428 u32 port_num, int index)
429{
430 struct mlx5_ib_dev *dev = to_mdev(ibdev);
431 const struct mlx5_ib_counters *cnts;
432 const struct mlx5_ib_op_fc *opfcs;
433 u64 packets = 0, bytes;
434 u32 type;
435 int ret;
436
437 cnts = get_counters(dev, port_num);
438
439 opfcs = cnts->opfcs;
440 type = *(u32 *)cnts->descs[index].priv;
441 if (type >= MLX5_IB_OPCOUNTER_MAX)
442 return -EINVAL;
443
444 if (!opfcs[type].fc)
445 goto out;
446
447 ret = mlx5_fc_query(dev: dev->mdev, counter: opfcs[type].fc,
448 packets: &packets, bytes: &bytes);
449 if (ret)
450 return ret;
451
452out:
453 stats->value[index] = packets;
454 return index;
455}
456
457static int do_get_op_stats(struct ib_device *ibdev,
458 struct rdma_hw_stats *stats,
459 u32 port_num)
460{
461 struct mlx5_ib_dev *dev = to_mdev(ibdev);
462 const struct mlx5_ib_counters *cnts;
463 int index, ret, num_hw_counters;
464
465 cnts = get_counters(dev, port_num);
466 num_hw_counters = cnts->num_q_counters + cnts->num_cong_counters +
467 cnts->num_ext_ppcnt_counters;
468 for (index = num_hw_counters;
469 index < (num_hw_counters + cnts->num_op_counters); index++) {
470 ret = do_get_op_stat(ibdev, stats, port_num, index);
471 if (ret != index)
472 return ret;
473 }
474
475 return cnts->num_op_counters;
476}
477
478static int mlx5_ib_get_hw_stats(struct ib_device *ibdev,
479 struct rdma_hw_stats *stats,
480 u32 port_num, int index)
481{
482 int num_counters, num_hw_counters, num_op_counters;
483 struct mlx5_ib_dev *dev = to_mdev(ibdev);
484 const struct mlx5_ib_counters *cnts;
485
486 cnts = get_counters(dev, port_num);
487 num_hw_counters = cnts->num_q_counters + cnts->num_cong_counters +
488 cnts->num_ext_ppcnt_counters;
489 num_counters = num_hw_counters + cnts->num_op_counters;
490
491 if (index < 0 || index > num_counters)
492 return -EINVAL;
493 else if (index > 0 && index < num_hw_counters)
494 return do_get_hw_stats(ibdev, stats, port_num, index);
495 else if (index >= num_hw_counters && index < num_counters)
496 return do_get_op_stat(ibdev, stats, port_num, index);
497
498 num_hw_counters = do_get_hw_stats(ibdev, stats, port_num, index);
499 if (num_hw_counters < 0)
500 return num_hw_counters;
501
502 num_op_counters = do_get_op_stats(ibdev, stats, port_num);
503 if (num_op_counters < 0)
504 return num_op_counters;
505
506 return num_hw_counters + num_op_counters;
507}
508
509static struct rdma_hw_stats *
510mlx5_ib_counter_alloc_stats(struct rdma_counter *counter)
511{
512 struct mlx5_ib_dev *dev = to_mdev(ibdev: counter->device);
513 const struct mlx5_ib_counters *cnts = get_counters(dev, port_num: counter->port);
514
515 return do_alloc_stats(cnts);
516}
517
518static int mlx5_ib_counter_update_stats(struct rdma_counter *counter)
519{
520 struct mlx5_ib_dev *dev = to_mdev(ibdev: counter->device);
521 const struct mlx5_ib_counters *cnts = get_counters(dev, port_num: counter->port);
522
523 return mlx5_ib_query_q_counters(mdev: dev->mdev, cnts,
524 stats: counter->stats, set_id: counter->id);
525}
526
527static int mlx5_ib_counter_dealloc(struct rdma_counter *counter)
528{
529 struct mlx5_ib_dev *dev = to_mdev(ibdev: counter->device);
530 u32 in[MLX5_ST_SZ_DW(dealloc_q_counter_in)] = {};
531
532 if (!counter->id)
533 return 0;
534
535 MLX5_SET(dealloc_q_counter_in, in, opcode,
536 MLX5_CMD_OP_DEALLOC_Q_COUNTER);
537 MLX5_SET(dealloc_q_counter_in, in, counter_set_id, counter->id);
538 return mlx5_cmd_exec_in(dev->mdev, dealloc_q_counter, in);
539}
540
541static int mlx5_ib_counter_bind_qp(struct rdma_counter *counter,
542 struct ib_qp *qp)
543{
544 struct mlx5_ib_dev *dev = to_mdev(ibdev: qp->device);
545 int err;
546
547 if (!counter->id) {
548 u32 out[MLX5_ST_SZ_DW(alloc_q_counter_out)] = {};
549 u32 in[MLX5_ST_SZ_DW(alloc_q_counter_in)] = {};
550
551 MLX5_SET(alloc_q_counter_in, in, opcode,
552 MLX5_CMD_OP_ALLOC_Q_COUNTER);
553 MLX5_SET(alloc_q_counter_in, in, uid, MLX5_SHARED_RESOURCE_UID);
554 err = mlx5_cmd_exec_inout(dev->mdev, alloc_q_counter, in, out);
555 if (err)
556 return err;
557 counter->id =
558 MLX5_GET(alloc_q_counter_out, out, counter_set_id);
559 }
560
561 err = mlx5_ib_qp_set_counter(qp, counter);
562 if (err)
563 goto fail_set_counter;
564
565 return 0;
566
567fail_set_counter:
568 mlx5_ib_counter_dealloc(counter);
569 counter->id = 0;
570
571 return err;
572}
573
574static int mlx5_ib_counter_unbind_qp(struct ib_qp *qp)
575{
576 return mlx5_ib_qp_set_counter(qp, NULL);
577}
578
579static void mlx5_ib_fill_counters(struct mlx5_ib_dev *dev,
580 struct rdma_stat_desc *descs, size_t *offsets,
581 u32 port_num)
582{
583 bool is_vport = is_mdev_switchdev_mode(dev: dev->mdev) &&
584 port_num != MLX5_VPORT_PF;
585 const struct mlx5_ib_counter *names;
586 int j = 0, i, size;
587
588 names = is_vport ? vport_basic_q_cnts : basic_q_cnts;
589 size = is_vport ? ARRAY_SIZE(vport_basic_q_cnts) :
590 ARRAY_SIZE(basic_q_cnts);
591 for (i = 0; i < size; i++, j++) {
592 descs[j].name = names[i].name;
593 offsets[j] = names[i].offset;
594 }
595
596 names = is_vport ? vport_out_of_seq_q_cnts : out_of_seq_q_cnts;
597 size = is_vport ? ARRAY_SIZE(vport_out_of_seq_q_cnts) :
598 ARRAY_SIZE(out_of_seq_q_cnts);
599 if (MLX5_CAP_GEN(dev->mdev, out_of_seq_cnt)) {
600 for (i = 0; i < size; i++, j++) {
601 descs[j].name = names[i].name;
602 offsets[j] = names[i].offset;
603 }
604 }
605
606 names = is_vport ? vport_retrans_q_cnts : retrans_q_cnts;
607 size = is_vport ? ARRAY_SIZE(vport_retrans_q_cnts) :
608 ARRAY_SIZE(retrans_q_cnts);
609 if (MLX5_CAP_GEN(dev->mdev, retransmission_q_counters)) {
610 for (i = 0; i < size; i++, j++) {
611 descs[j].name = names[i].name;
612 offsets[j] = names[i].offset;
613 }
614 }
615
616 names = is_vport ? vport_extended_err_cnts : extended_err_cnts;
617 size = is_vport ? ARRAY_SIZE(vport_extended_err_cnts) :
618 ARRAY_SIZE(extended_err_cnts);
619 if (MLX5_CAP_GEN(dev->mdev, enhanced_error_q_counters)) {
620 for (i = 0; i < size; i++, j++) {
621 descs[j].name = names[i].name;
622 offsets[j] = names[i].offset;
623 }
624 }
625
626 names = is_vport ? vport_roce_accl_cnts : roce_accl_cnts;
627 size = is_vport ? ARRAY_SIZE(vport_roce_accl_cnts) :
628 ARRAY_SIZE(roce_accl_cnts);
629 if (MLX5_CAP_GEN(dev->mdev, roce_accl)) {
630 for (i = 0; i < size; i++, j++) {
631 descs[j].name = names[i].name;
632 offsets[j] = names[i].offset;
633 }
634 }
635
636 if (is_vport)
637 return;
638
639 if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) {
640 for (i = 0; i < ARRAY_SIZE(cong_cnts); i++, j++) {
641 descs[j].name = cong_cnts[i].name;
642 offsets[j] = cong_cnts[i].offset;
643 }
644 }
645
646 if (MLX5_CAP_PCAM_FEATURE(dev->mdev, rx_icrc_encapsulated_counter)) {
647 for (i = 0; i < ARRAY_SIZE(ext_ppcnt_cnts); i++, j++) {
648 descs[j].name = ext_ppcnt_cnts[i].name;
649 offsets[j] = ext_ppcnt_cnts[i].offset;
650 }
651 }
652
653 for (i = 0; i < ARRAY_SIZE(basic_op_cnts); i++, j++) {
654 descs[j].name = basic_op_cnts[i].name;
655 descs[j].flags |= IB_STAT_FLAG_OPTIONAL;
656 descs[j].priv = &basic_op_cnts[i].type;
657 }
658
659 if (MLX5_CAP_FLOWTABLE(dev->mdev,
660 ft_field_support_2_nic_receive_rdma.bth_opcode)) {
661 for (i = 0; i < ARRAY_SIZE(rdmarx_cnp_op_cnts); i++, j++) {
662 descs[j].name = rdmarx_cnp_op_cnts[i].name;
663 descs[j].flags |= IB_STAT_FLAG_OPTIONAL;
664 descs[j].priv = &rdmarx_cnp_op_cnts[i].type;
665 }
666 }
667
668 if (MLX5_CAP_FLOWTABLE(dev->mdev,
669 ft_field_support_2_nic_transmit_rdma.bth_opcode)) {
670 for (i = 0; i < ARRAY_SIZE(rdmatx_cnp_op_cnts); i++, j++) {
671 descs[j].name = rdmatx_cnp_op_cnts[i].name;
672 descs[j].flags |= IB_STAT_FLAG_OPTIONAL;
673 descs[j].priv = &rdmatx_cnp_op_cnts[i].type;
674 }
675 }
676}
677
678
679static int __mlx5_ib_alloc_counters(struct mlx5_ib_dev *dev,
680 struct mlx5_ib_counters *cnts, u32 port_num)
681{
682 bool is_vport = is_mdev_switchdev_mode(dev: dev->mdev) &&
683 port_num != MLX5_VPORT_PF;
684 u32 num_counters, num_op_counters = 0, size;
685
686 size = is_vport ? ARRAY_SIZE(vport_basic_q_cnts) :
687 ARRAY_SIZE(basic_q_cnts);
688 num_counters = size;
689
690 size = is_vport ? ARRAY_SIZE(vport_out_of_seq_q_cnts) :
691 ARRAY_SIZE(out_of_seq_q_cnts);
692 if (MLX5_CAP_GEN(dev->mdev, out_of_seq_cnt))
693 num_counters += size;
694
695 size = is_vport ? ARRAY_SIZE(vport_retrans_q_cnts) :
696 ARRAY_SIZE(retrans_q_cnts);
697 if (MLX5_CAP_GEN(dev->mdev, retransmission_q_counters))
698 num_counters += size;
699
700 size = is_vport ? ARRAY_SIZE(vport_extended_err_cnts) :
701 ARRAY_SIZE(extended_err_cnts);
702 if (MLX5_CAP_GEN(dev->mdev, enhanced_error_q_counters))
703 num_counters += size;
704
705 size = is_vport ? ARRAY_SIZE(vport_roce_accl_cnts) :
706 ARRAY_SIZE(roce_accl_cnts);
707 if (MLX5_CAP_GEN(dev->mdev, roce_accl))
708 num_counters += size;
709
710 cnts->num_q_counters = num_counters;
711
712 if (is_vport)
713 goto skip_non_qcounters;
714
715 if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) {
716 cnts->num_cong_counters = ARRAY_SIZE(cong_cnts);
717 num_counters += ARRAY_SIZE(cong_cnts);
718 }
719 if (MLX5_CAP_PCAM_FEATURE(dev->mdev, rx_icrc_encapsulated_counter)) {
720 cnts->num_ext_ppcnt_counters = ARRAY_SIZE(ext_ppcnt_cnts);
721 num_counters += ARRAY_SIZE(ext_ppcnt_cnts);
722 }
723
724 num_op_counters = ARRAY_SIZE(basic_op_cnts);
725
726 if (MLX5_CAP_FLOWTABLE(dev->mdev,
727 ft_field_support_2_nic_receive_rdma.bth_opcode))
728 num_op_counters += ARRAY_SIZE(rdmarx_cnp_op_cnts);
729
730 if (MLX5_CAP_FLOWTABLE(dev->mdev,
731 ft_field_support_2_nic_transmit_rdma.bth_opcode))
732 num_op_counters += ARRAY_SIZE(rdmatx_cnp_op_cnts);
733
734skip_non_qcounters:
735 cnts->num_op_counters = num_op_counters;
736 num_counters += num_op_counters;
737 cnts->descs = kcalloc(n: num_counters,
738 size: sizeof(struct rdma_stat_desc), GFP_KERNEL);
739 if (!cnts->descs)
740 return -ENOMEM;
741
742 cnts->offsets = kcalloc(n: num_counters,
743 size: sizeof(*cnts->offsets), GFP_KERNEL);
744 if (!cnts->offsets)
745 goto err;
746
747 return 0;
748
749err:
750 kfree(objp: cnts->descs);
751 cnts->descs = NULL;
752 return -ENOMEM;
753}
754
755static void mlx5_ib_dealloc_counters(struct mlx5_ib_dev *dev)
756{
757 u32 in[MLX5_ST_SZ_DW(dealloc_q_counter_in)] = {};
758 int num_cnt_ports = dev->num_ports;
759 int i, j;
760
761 if (is_mdev_switchdev_mode(dev: dev->mdev))
762 num_cnt_ports = min(2, num_cnt_ports);
763
764 MLX5_SET(dealloc_q_counter_in, in, opcode,
765 MLX5_CMD_OP_DEALLOC_Q_COUNTER);
766
767 for (i = 0; i < num_cnt_ports; i++) {
768 if (dev->port[i].cnts.set_id) {
769 MLX5_SET(dealloc_q_counter_in, in, counter_set_id,
770 dev->port[i].cnts.set_id);
771 mlx5_cmd_exec_in(dev->mdev, dealloc_q_counter, in);
772 }
773 kfree(objp: dev->port[i].cnts.descs);
774 kfree(objp: dev->port[i].cnts.offsets);
775
776 for (j = 0; j < MLX5_IB_OPCOUNTER_MAX; j++) {
777 if (!dev->port[i].cnts.opfcs[j].fc)
778 continue;
779
780 if (IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS))
781 mlx5_ib_fs_remove_op_fc(dev,
782 opfc: &dev->port[i].cnts.opfcs[j], type: j);
783 mlx5_fc_destroy(dev: dev->mdev,
784 counter: dev->port[i].cnts.opfcs[j].fc);
785 dev->port[i].cnts.opfcs[j].fc = NULL;
786 }
787 }
788}
789
790static int mlx5_ib_alloc_counters(struct mlx5_ib_dev *dev)
791{
792 u32 out[MLX5_ST_SZ_DW(alloc_q_counter_out)] = {};
793 u32 in[MLX5_ST_SZ_DW(alloc_q_counter_in)] = {};
794 int num_cnt_ports = dev->num_ports;
795 int err = 0;
796 int i;
797 bool is_shared;
798
799 MLX5_SET(alloc_q_counter_in, in, opcode, MLX5_CMD_OP_ALLOC_Q_COUNTER);
800 is_shared = MLX5_CAP_GEN(dev->mdev, log_max_uctx) != 0;
801
802 /*
803 * In switchdev we need to allocate two ports, one that is used for
804 * the device Q_counters and it is essentially the real Q_counters of
805 * this device, while the other is used as a helper for PF to be able to
806 * query all other vports.
807 */
808 if (is_mdev_switchdev_mode(dev: dev->mdev))
809 num_cnt_ports = min(2, num_cnt_ports);
810
811 for (i = 0; i < num_cnt_ports; i++) {
812 err = __mlx5_ib_alloc_counters(dev, cnts: &dev->port[i].cnts, port_num: i);
813 if (err)
814 goto err_alloc;
815
816 mlx5_ib_fill_counters(dev, descs: dev->port[i].cnts.descs,
817 offsets: dev->port[i].cnts.offsets, port_num: i);
818
819 MLX5_SET(alloc_q_counter_in, in, uid,
820 is_shared ? MLX5_SHARED_RESOURCE_UID : 0);
821
822 err = mlx5_cmd_exec_inout(dev->mdev, alloc_q_counter, in, out);
823 if (err) {
824 mlx5_ib_warn(dev,
825 "couldn't allocate queue counter for port %d, err %d\n",
826 i + 1, err);
827 goto err_alloc;
828 }
829
830 dev->port[i].cnts.set_id =
831 MLX5_GET(alloc_q_counter_out, out, counter_set_id);
832 }
833 return 0;
834
835err_alloc:
836 mlx5_ib_dealloc_counters(dev);
837 return err;
838}
839
840static int read_flow_counters(struct ib_device *ibdev,
841 struct mlx5_read_counters_attr *read_attr)
842{
843 struct mlx5_fc *fc = read_attr->hw_cntrs_hndl;
844 struct mlx5_ib_dev *dev = to_mdev(ibdev);
845
846 return mlx5_fc_query(dev: dev->mdev, counter: fc,
847 packets: &read_attr->out[IB_COUNTER_PACKETS],
848 bytes: &read_attr->out[IB_COUNTER_BYTES]);
849}
850
851/* flow counters currently expose two counters packets and bytes */
852#define FLOW_COUNTERS_NUM 2
853static int counters_set_description(
854 struct ib_counters *counters, enum mlx5_ib_counters_type counters_type,
855 struct mlx5_ib_flow_counters_desc *desc_data, u32 ncounters)
856{
857 struct mlx5_ib_mcounters *mcounters = to_mcounters(ibcntrs: counters);
858 u32 cntrs_max_index = 0;
859 int i;
860
861 if (counters_type != MLX5_IB_COUNTERS_FLOW)
862 return -EINVAL;
863
864 /* init the fields for the object */
865 mcounters->type = counters_type;
866 mcounters->read_counters = read_flow_counters;
867 mcounters->counters_num = FLOW_COUNTERS_NUM;
868 mcounters->ncounters = ncounters;
869 /* each counter entry have both description and index pair */
870 for (i = 0; i < ncounters; i++) {
871 if (desc_data[i].description > IB_COUNTER_BYTES)
872 return -EINVAL;
873
874 if (cntrs_max_index <= desc_data[i].index)
875 cntrs_max_index = desc_data[i].index + 1;
876 }
877
878 mutex_lock(&mcounters->mcntrs_mutex);
879 mcounters->counters_data = desc_data;
880 mcounters->cntrs_max_index = cntrs_max_index;
881 mutex_unlock(lock: &mcounters->mcntrs_mutex);
882
883 return 0;
884}
885
886#define MAX_COUNTERS_NUM (USHRT_MAX / (sizeof(u32) * 2))
887int mlx5_ib_flow_counters_set_data(struct ib_counters *ibcounters,
888 struct mlx5_ib_create_flow *ucmd)
889{
890 struct mlx5_ib_mcounters *mcounters = to_mcounters(ibcntrs: ibcounters);
891 struct mlx5_ib_flow_counters_data *cntrs_data = NULL;
892 struct mlx5_ib_flow_counters_desc *desc_data = NULL;
893 bool hw_hndl = false;
894 int ret = 0;
895
896 if (ucmd && ucmd->ncounters_data != 0) {
897 cntrs_data = ucmd->data;
898 if (cntrs_data->ncounters > MAX_COUNTERS_NUM)
899 return -EINVAL;
900
901 desc_data = kcalloc(n: cntrs_data->ncounters,
902 size: sizeof(*desc_data),
903 GFP_KERNEL);
904 if (!desc_data)
905 return -ENOMEM;
906
907 if (copy_from_user(to: desc_data,
908 u64_to_user_ptr(cntrs_data->counters_data),
909 n: sizeof(*desc_data) * cntrs_data->ncounters)) {
910 ret = -EFAULT;
911 goto free;
912 }
913 }
914
915 if (!mcounters->hw_cntrs_hndl) {
916 mcounters->hw_cntrs_hndl = mlx5_fc_create(
917 dev: to_mdev(ibdev: ibcounters->device)->mdev, aging: false);
918 if (IS_ERR(ptr: mcounters->hw_cntrs_hndl)) {
919 ret = PTR_ERR(ptr: mcounters->hw_cntrs_hndl);
920 goto free;
921 }
922 hw_hndl = true;
923 }
924
925 if (desc_data) {
926 /* counters already bound to at least one flow */
927 if (mcounters->cntrs_max_index) {
928 ret = -EINVAL;
929 goto free_hndl;
930 }
931
932 ret = counters_set_description(counters: ibcounters,
933 counters_type: MLX5_IB_COUNTERS_FLOW,
934 desc_data,
935 ncounters: cntrs_data->ncounters);
936 if (ret)
937 goto free_hndl;
938
939 } else if (!mcounters->cntrs_max_index) {
940 /* counters not bound yet, must have udata passed */
941 ret = -EINVAL;
942 goto free_hndl;
943 }
944
945 return 0;
946
947free_hndl:
948 if (hw_hndl) {
949 mlx5_fc_destroy(dev: to_mdev(ibdev: ibcounters->device)->mdev,
950 counter: mcounters->hw_cntrs_hndl);
951 mcounters->hw_cntrs_hndl = NULL;
952 }
953free:
954 kfree(objp: desc_data);
955 return ret;
956}
957
958void mlx5_ib_counters_clear_description(struct ib_counters *counters)
959{
960 struct mlx5_ib_mcounters *mcounters;
961
962 if (!counters || atomic_read(v: &counters->usecnt) != 1)
963 return;
964
965 mcounters = to_mcounters(ibcntrs: counters);
966
967 mutex_lock(&mcounters->mcntrs_mutex);
968 kfree(objp: mcounters->counters_data);
969 mcounters->counters_data = NULL;
970 mcounters->cntrs_max_index = 0;
971 mutex_unlock(lock: &mcounters->mcntrs_mutex);
972}
973
974static int mlx5_ib_modify_stat(struct ib_device *device, u32 port,
975 unsigned int index, bool enable)
976{
977 struct mlx5_ib_dev *dev = to_mdev(ibdev: device);
978 struct mlx5_ib_counters *cnts;
979 struct mlx5_ib_op_fc *opfc;
980 u32 num_hw_counters, type;
981 int ret;
982
983 cnts = &dev->port[port - 1].cnts;
984 num_hw_counters = cnts->num_q_counters + cnts->num_cong_counters +
985 cnts->num_ext_ppcnt_counters;
986 if (index < num_hw_counters ||
987 index >= (num_hw_counters + cnts->num_op_counters))
988 return -EINVAL;
989
990 if (!(cnts->descs[index].flags & IB_STAT_FLAG_OPTIONAL))
991 return -EINVAL;
992
993 type = *(u32 *)cnts->descs[index].priv;
994 if (type >= MLX5_IB_OPCOUNTER_MAX)
995 return -EINVAL;
996
997 opfc = &cnts->opfcs[type];
998
999 if (enable) {
1000 if (opfc->fc)
1001 return -EEXIST;
1002
1003 opfc->fc = mlx5_fc_create(dev: dev->mdev, aging: false);
1004 if (IS_ERR(ptr: opfc->fc))
1005 return PTR_ERR(ptr: opfc->fc);
1006
1007 ret = mlx5_ib_fs_add_op_fc(dev, port_num: port, opfc, type);
1008 if (ret) {
1009 mlx5_fc_destroy(dev: dev->mdev, counter: opfc->fc);
1010 opfc->fc = NULL;
1011 }
1012 return ret;
1013 }
1014
1015 if (!opfc->fc)
1016 return -EINVAL;
1017
1018 mlx5_ib_fs_remove_op_fc(dev, opfc, type);
1019 mlx5_fc_destroy(dev: dev->mdev, counter: opfc->fc);
1020 opfc->fc = NULL;
1021 return 0;
1022}
1023
1024static const struct ib_device_ops hw_stats_ops = {
1025 .alloc_hw_port_stats = mlx5_ib_alloc_hw_port_stats,
1026 .get_hw_stats = mlx5_ib_get_hw_stats,
1027 .counter_bind_qp = mlx5_ib_counter_bind_qp,
1028 .counter_unbind_qp = mlx5_ib_counter_unbind_qp,
1029 .counter_dealloc = mlx5_ib_counter_dealloc,
1030 .counter_alloc_stats = mlx5_ib_counter_alloc_stats,
1031 .counter_update_stats = mlx5_ib_counter_update_stats,
1032 .modify_hw_stat = IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS) ?
1033 mlx5_ib_modify_stat : NULL,
1034};
1035
1036static const struct ib_device_ops hw_switchdev_vport_op = {
1037 .alloc_hw_port_stats = mlx5_ib_alloc_hw_port_stats,
1038};
1039
1040static const struct ib_device_ops hw_switchdev_stats_ops = {
1041 .alloc_hw_device_stats = mlx5_ib_alloc_hw_device_stats,
1042 .get_hw_stats = mlx5_ib_get_hw_stats,
1043 .counter_bind_qp = mlx5_ib_counter_bind_qp,
1044 .counter_unbind_qp = mlx5_ib_counter_unbind_qp,
1045 .counter_dealloc = mlx5_ib_counter_dealloc,
1046 .counter_alloc_stats = mlx5_ib_counter_alloc_stats,
1047 .counter_update_stats = mlx5_ib_counter_update_stats,
1048};
1049
1050static const struct ib_device_ops counters_ops = {
1051 .create_counters = mlx5_ib_create_counters,
1052 .destroy_counters = mlx5_ib_destroy_counters,
1053 .read_counters = mlx5_ib_read_counters,
1054
1055 INIT_RDMA_OBJ_SIZE(ib_counters, mlx5_ib_mcounters, ibcntrs),
1056};
1057
1058int mlx5_ib_counters_init(struct mlx5_ib_dev *dev)
1059{
1060 ib_set_device_ops(device: &dev->ib_dev, ops: &counters_ops);
1061
1062 if (!MLX5_CAP_GEN(dev->mdev, max_qp_cnt))
1063 return 0;
1064
1065 if (is_mdev_switchdev_mode(dev: dev->mdev)) {
1066 ib_set_device_ops(device: &dev->ib_dev, ops: &hw_switchdev_stats_ops);
1067 if (vport_qcounters_supported(dev))
1068 ib_set_device_ops(device: &dev->ib_dev, ops: &hw_switchdev_vport_op);
1069 } else
1070 ib_set_device_ops(device: &dev->ib_dev, ops: &hw_stats_ops);
1071 return mlx5_ib_alloc_counters(dev);
1072}
1073
1074void mlx5_ib_counters_cleanup(struct mlx5_ib_dev *dev)
1075{
1076 if (!MLX5_CAP_GEN(dev->mdev, max_qp_cnt))
1077 return;
1078
1079 mlx5_ib_dealloc_counters(dev);
1080}
1081

source code of linux/drivers/infiniband/hw/mlx5/counters.c