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33#include <linux/mlx5/vport.h>
34#include <rdma/ib_mad.h>
35#include <rdma/ib_smi.h>
36#include <rdma/ib_pma.h>
37#include "mlx5_ib.h"
38#include "cmd.h"
39
40enum {
41 MLX5_IB_VENDOR_CLASS1 = 0x9,
42 MLX5_IB_VENDOR_CLASS2 = 0xa
43};
44
45static bool can_do_mad_ifc(struct mlx5_ib_dev *dev, u32 port_num,
46 struct ib_mad *in_mad)
47{
48 if (in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED &&
49 in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
50 return true;
51 return dev->port_caps[port_num - 1].has_smi;
52}
53
54static int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey,
55 int ignore_bkey, u32 port, const struct ib_wc *in_wc,
56 const struct ib_grh *in_grh, const void *in_mad,
57 void *response_mad)
58{
59 u8 op_modifier = 0;
60
61 if (!can_do_mad_ifc(dev, port, (struct ib_mad *)in_mad))
62 return -EPERM;
63
64
65
66
67 if (ignore_mkey || !in_wc)
68 op_modifier |= 0x1;
69 if (ignore_bkey || !in_wc)
70 op_modifier |= 0x2;
71
72 return mlx5_cmd_mad_ifc(dev->mdev, in_mad, response_mad, op_modifier,
73 port);
74}
75
76static void pma_cnt_ext_assign(struct ib_pma_portcounters_ext *pma_cnt_ext,
77 void *out)
78{
79#define MLX5_SUM_CNT(p, cntr1, cntr2) \
80 (MLX5_GET64(query_vport_counter_out, p, cntr1) + \
81 MLX5_GET64(query_vport_counter_out, p, cntr2))
82
83 pma_cnt_ext->port_xmit_data =
84 cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.octets,
85 transmitted_ib_multicast.octets) >> 2);
86 pma_cnt_ext->port_rcv_data =
87 cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.octets,
88 received_ib_multicast.octets) >> 2);
89 pma_cnt_ext->port_xmit_packets =
90 cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.packets,
91 transmitted_ib_multicast.packets));
92 pma_cnt_ext->port_rcv_packets =
93 cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.packets,
94 received_ib_multicast.packets));
95 pma_cnt_ext->port_unicast_xmit_packets =
96 MLX5_GET64_BE(query_vport_counter_out,
97 out, transmitted_ib_unicast.packets);
98 pma_cnt_ext->port_unicast_rcv_packets =
99 MLX5_GET64_BE(query_vport_counter_out,
100 out, received_ib_unicast.packets);
101 pma_cnt_ext->port_multicast_xmit_packets =
102 MLX5_GET64_BE(query_vport_counter_out,
103 out, transmitted_ib_multicast.packets);
104 pma_cnt_ext->port_multicast_rcv_packets =
105 MLX5_GET64_BE(query_vport_counter_out,
106 out, received_ib_multicast.packets);
107}
108
109static void pma_cnt_assign(struct ib_pma_portcounters *pma_cnt,
110 void *out)
111{
112
113
114
115 void *out_pma = MLX5_ADDR_OF(ppcnt_reg, out,
116 counter_set);
117
118#define MLX5_ASSIGN_PMA_CNTR(counter_var, counter_name) { \
119 counter_var = MLX5_GET_BE(typeof(counter_var), \
120 ib_port_cntrs_grp_data_layout, \
121 out_pma, counter_name); \
122 }
123
124 MLX5_ASSIGN_PMA_CNTR(pma_cnt->symbol_error_counter,
125 symbol_error_counter);
126 MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_error_recovery_counter,
127 link_error_recovery_counter);
128 MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_downed_counter,
129 link_downed_counter);
130 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_errors,
131 port_rcv_errors);
132 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_remphys_errors,
133 port_rcv_remote_physical_errors);
134 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_switch_relay_errors,
135 port_rcv_switch_relay_errors);
136 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_discards,
137 port_xmit_discards);
138 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_constraint_errors,
139 port_xmit_constraint_errors);
140 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_wait,
141 port_xmit_wait);
142 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_constraint_errors,
143 port_rcv_constraint_errors);
144 MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_overrun_errors,
145 link_overrun_errors);
146 MLX5_ASSIGN_PMA_CNTR(pma_cnt->vl15_dropped,
147 vl_15_dropped);
148}
149
150static int process_pma_cmd(struct mlx5_ib_dev *dev, u32 port_num,
151 const struct ib_mad *in_mad, struct ib_mad *out_mad)
152{
153 struct mlx5_core_dev *mdev;
154 bool native_port = true;
155 u32 mdev_port_num;
156 void *out_cnt;
157 int err;
158
159 mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
160 if (!mdev) {
161
162
163
164
165 native_port = false;
166 mdev = dev->mdev;
167 mdev_port_num = 1;
168 }
169
170 if (in_mad->mad_hdr.attr_id == IB_PMA_CLASS_PORT_INFO) {
171 struct ib_class_port_info cpi = {};
172
173 cpi.capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
174 memcpy((out_mad->data + 40), &cpi, sizeof(cpi));
175 err = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
176 goto done;
177 }
178
179 if (in_mad->mad_hdr.attr_id == IB_PMA_PORT_COUNTERS_EXT) {
180 struct ib_pma_portcounters_ext *pma_cnt_ext =
181 (struct ib_pma_portcounters_ext *)(out_mad->data + 40);
182 int sz = MLX5_ST_SZ_BYTES(query_vport_counter_out);
183
184 out_cnt = kvzalloc(sz, GFP_KERNEL);
185 if (!out_cnt) {
186 err = IB_MAD_RESULT_FAILURE;
187 goto done;
188 }
189
190 err = mlx5_core_query_vport_counter(mdev, 0, 0, mdev_port_num,
191 out_cnt);
192 if (!err)
193 pma_cnt_ext_assign(pma_cnt_ext, out_cnt);
194 } else {
195 struct ib_pma_portcounters *pma_cnt =
196 (struct ib_pma_portcounters *)(out_mad->data + 40);
197 int sz = MLX5_ST_SZ_BYTES(ppcnt_reg);
198
199 out_cnt = kvzalloc(sz, GFP_KERNEL);
200 if (!out_cnt) {
201 err = IB_MAD_RESULT_FAILURE;
202 goto done;
203 }
204
205 err = mlx5_core_query_ib_ppcnt(mdev, mdev_port_num,
206 out_cnt, sz);
207 if (!err)
208 pma_cnt_assign(pma_cnt, out_cnt);
209 }
210 kvfree(out_cnt);
211 err = err ? IB_MAD_RESULT_FAILURE :
212 IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
213done:
214 if (native_port)
215 mlx5_ib_put_native_port_mdev(dev, port_num);
216 return err;
217}
218
219int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u32 port_num,
220 const struct ib_wc *in_wc, const struct ib_grh *in_grh,
221 const struct ib_mad *in, struct ib_mad *out,
222 size_t *out_mad_size, u16 *out_mad_pkey_index)
223{
224 struct mlx5_ib_dev *dev = to_mdev(ibdev);
225 u8 mgmt_class = in->mad_hdr.mgmt_class;
226 u8 method = in->mad_hdr.method;
227 u16 slid;
228 int err;
229
230 slid = in_wc ? ib_lid_cpu16(in_wc->slid) :
231 be16_to_cpu(IB_LID_PERMISSIVE);
232
233 if (method == IB_MGMT_METHOD_TRAP && !slid)
234 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
235
236 switch (mgmt_class) {
237 case IB_MGMT_CLASS_SUBN_LID_ROUTED:
238 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: {
239 if (method != IB_MGMT_METHOD_GET &&
240 method != IB_MGMT_METHOD_SET &&
241 method != IB_MGMT_METHOD_TRAP_REPRESS)
242 return IB_MAD_RESULT_SUCCESS;
243
244
245
246 if (in->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO)
247 return IB_MAD_RESULT_SUCCESS;
248 } break;
249 case IB_MGMT_CLASS_PERF_MGMT:
250 if (MLX5_CAP_GEN(dev->mdev, vport_counters) &&
251 method == IB_MGMT_METHOD_GET)
252 return process_pma_cmd(dev, port_num, in, out);
253 fallthrough;
254 case MLX5_IB_VENDOR_CLASS1:
255 case MLX5_IB_VENDOR_CLASS2:
256 case IB_MGMT_CLASS_CONG_MGMT: {
257 if (method != IB_MGMT_METHOD_GET &&
258 method != IB_MGMT_METHOD_SET)
259 return IB_MAD_RESULT_SUCCESS;
260 } break;
261 default:
262 return IB_MAD_RESULT_SUCCESS;
263 }
264
265 err = mlx5_MAD_IFC(to_mdev(ibdev), mad_flags & IB_MAD_IGNORE_MKEY,
266 mad_flags & IB_MAD_IGNORE_BKEY, port_num, in_wc,
267 in_grh, in, out);
268 if (err)
269 return IB_MAD_RESULT_FAILURE;
270
271
272 if (mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
273 out->mad_hdr.status |= cpu_to_be16(1 << 15);
274
275 if (method == IB_MGMT_METHOD_TRAP_REPRESS)
276
277 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
278
279 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
280}
281
282int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, unsigned int port)
283{
284 struct ib_smp *in_mad = NULL;
285 struct ib_smp *out_mad = NULL;
286 int err = -ENOMEM;
287 u16 packet_error;
288
289 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
290 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
291 if (!in_mad || !out_mad)
292 goto out;
293
294 init_query_mad(in_mad);
295 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
296 in_mad->attr_mod = cpu_to_be32(port);
297
298 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
299
300 packet_error = be16_to_cpu(out_mad->status);
301
302 dev->port_caps[port - 1].ext_port_cap = (!err && !packet_error) ?
303 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0;
304
305out:
306 kfree(in_mad);
307 kfree(out_mad);
308 return err;
309}
310
311static int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev,
312 struct ib_smp *out_mad)
313{
314 struct ib_smp *in_mad = NULL;
315 int err = -ENOMEM;
316
317 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
318 if (!in_mad)
319 return -ENOMEM;
320
321 init_query_mad(in_mad);
322 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
323
324 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad,
325 out_mad);
326
327 kfree(in_mad);
328 return err;
329}
330
331int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev,
332 __be64 *sys_image_guid)
333{
334 struct ib_smp *out_mad = NULL;
335 int err = -ENOMEM;
336
337 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
338 if (!out_mad)
339 return -ENOMEM;
340
341 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
342 if (err)
343 goto out;
344
345 memcpy(sys_image_guid, out_mad->data + 4, 8);
346
347out:
348 kfree(out_mad);
349
350 return err;
351}
352
353int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev,
354 u16 *max_pkeys)
355{
356 struct ib_smp *out_mad = NULL;
357 int err = -ENOMEM;
358
359 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
360 if (!out_mad)
361 return -ENOMEM;
362
363 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
364 if (err)
365 goto out;
366
367 *max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28));
368
369out:
370 kfree(out_mad);
371
372 return err;
373}
374
375int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev,
376 u32 *vendor_id)
377{
378 struct ib_smp *out_mad = NULL;
379 int err = -ENOMEM;
380
381 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
382 if (!out_mad)
383 return -ENOMEM;
384
385 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
386 if (err)
387 goto out;
388
389 *vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) & 0xffff;
390
391out:
392 kfree(out_mad);
393
394 return err;
395}
396
397int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc)
398{
399 struct ib_smp *in_mad = NULL;
400 struct ib_smp *out_mad = NULL;
401 int err = -ENOMEM;
402
403 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
404 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
405 if (!in_mad || !out_mad)
406 goto out;
407
408 init_query_mad(in_mad);
409 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
410
411 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
412 if (err)
413 goto out;
414
415 memcpy(node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
416out:
417 kfree(in_mad);
418 kfree(out_mad);
419 return err;
420}
421
422int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid)
423{
424 struct ib_smp *in_mad = NULL;
425 struct ib_smp *out_mad = NULL;
426 int err = -ENOMEM;
427
428 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
429 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
430 if (!in_mad || !out_mad)
431 goto out;
432
433 init_query_mad(in_mad);
434 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
435
436 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
437 if (err)
438 goto out;
439
440 memcpy(node_guid, out_mad->data + 12, 8);
441out:
442 kfree(in_mad);
443 kfree(out_mad);
444 return err;
445}
446
447int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u32 port, u16 index,
448 u16 *pkey)
449{
450 struct ib_smp *in_mad = NULL;
451 struct ib_smp *out_mad = NULL;
452 int err = -ENOMEM;
453
454 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
455 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
456 if (!in_mad || !out_mad)
457 goto out;
458
459 init_query_mad(in_mad);
460 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
461 in_mad->attr_mod = cpu_to_be32(index / 32);
462
463 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
464 out_mad);
465 if (err)
466 goto out;
467
468 *pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]);
469
470out:
471 kfree(in_mad);
472 kfree(out_mad);
473 return err;
474}
475
476int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u32 port, int index,
477 union ib_gid *gid)
478{
479 struct ib_smp *in_mad = NULL;
480 struct ib_smp *out_mad = NULL;
481 int err = -ENOMEM;
482
483 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
484 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
485 if (!in_mad || !out_mad)
486 goto out;
487
488 init_query_mad(in_mad);
489 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
490 in_mad->attr_mod = cpu_to_be32(port);
491
492 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
493 out_mad);
494 if (err)
495 goto out;
496
497 memcpy(gid->raw, out_mad->data + 8, 8);
498
499 init_query_mad(in_mad);
500 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
501 in_mad->attr_mod = cpu_to_be32(index / 8);
502
503 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
504 out_mad);
505 if (err)
506 goto out;
507
508 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
509
510out:
511 kfree(in_mad);
512 kfree(out_mad);
513 return err;
514}
515
516int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u32 port,
517 struct ib_port_attr *props)
518{
519 struct mlx5_ib_dev *dev = to_mdev(ibdev);
520 struct mlx5_core_dev *mdev = dev->mdev;
521 struct ib_smp *in_mad = NULL;
522 struct ib_smp *out_mad = NULL;
523 int ext_active_speed;
524 int err = -ENOMEM;
525
526 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
527 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
528 if (!in_mad || !out_mad)
529 goto out;
530
531
532
533 init_query_mad(in_mad);
534 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
535 in_mad->attr_mod = cpu_to_be32(port);
536
537 err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad);
538 if (err) {
539 mlx5_ib_warn(dev, "err %d\n", err);
540 goto out;
541 }
542
543 props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16));
544 props->lmc = out_mad->data[34] & 0x7;
545 props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18));
546 props->sm_sl = out_mad->data[36] & 0xf;
547 props->state = out_mad->data[32] & 0xf;
548 props->phys_state = out_mad->data[33] >> 4;
549 props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20));
550 props->gid_tbl_len = out_mad->data[50];
551 props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg);
552 props->pkey_tbl_len = dev->pkey_table_len;
553 props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46));
554 props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48));
555 props->active_width = out_mad->data[31] & 0xf;
556 props->active_speed = out_mad->data[35] >> 4;
557 props->max_mtu = out_mad->data[41] & 0xf;
558 props->active_mtu = out_mad->data[36] >> 4;
559 props->subnet_timeout = out_mad->data[51] & 0x1f;
560 props->max_vl_num = out_mad->data[37] >> 4;
561 props->init_type_reply = out_mad->data[41] >> 4;
562
563 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP) {
564 props->port_cap_flags2 =
565 be16_to_cpup((__be16 *)(out_mad->data + 60));
566
567 if (props->port_cap_flags2 & IB_PORT_LINK_WIDTH_2X_SUP)
568 props->active_width = out_mad->data[31] & 0x1f;
569 }
570
571
572 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
573 ext_active_speed = out_mad->data[62] >> 4;
574
575 switch (ext_active_speed) {
576 case 1:
577 props->active_speed = 16;
578 break;
579 case 2:
580 props->active_speed = 32;
581 break;
582 case 4:
583 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP &&
584 props->port_cap_flags2 & IB_PORT_LINK_SPEED_HDR_SUP)
585 props->active_speed = IB_SPEED_HDR;
586 break;
587 }
588 }
589
590
591 if (props->active_speed == 4) {
592 if (dev->port_caps[port - 1].ext_port_cap &
593 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
594 init_query_mad(in_mad);
595 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
596 in_mad->attr_mod = cpu_to_be32(port);
597
598 err = mlx5_MAD_IFC(dev, 1, 1, port,
599 NULL, NULL, in_mad, out_mad);
600 if (err)
601 goto out;
602
603
604 if (out_mad->data[15] & 0x1)
605 props->active_speed = 8;
606 }
607 }
608
609out:
610 kfree(in_mad);
611 kfree(out_mad);
612
613 return err;
614}
615
