1 /*
2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
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
40 enum {
41 MLX5_IB_VENDOR_CLASS1 = 0x9,
42 MLX5_IB_VENDOR_CLASS2 = 0xa
43 };
44
can_do_mad_ifc(struct mlx5_ib_dev * dev,u32 port_num,struct ib_mad * in_mad)45 static 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
mlx5_MAD_IFC(struct mlx5_ib_dev * dev,int ignore_mkey,int ignore_bkey,u32 port,const struct ib_wc * in_wc,const struct ib_grh * in_grh,const void * in_mad,void * response_mad)54 static 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 /* Key check traps can't be generated unless we have in_wc to
65 * tell us where to send the trap.
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
pma_cnt_ext_assign(struct ib_pma_portcounters_ext * pma_cnt_ext,void * out)76 static 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
pma_cnt_assign(struct ib_pma_portcounters * pma_cnt,void * out)109 static void pma_cnt_assign(struct ib_pma_portcounters *pma_cnt,
110 void *out)
111 {
112 /* Traffic counters will be reported in
113 * their 64bit form via ib_pma_portcounters_ext by default.
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
process_pma_cmd(struct mlx5_ib_dev * dev,u32 port_num,const struct ib_mad * in_mad,struct ib_mad * out_mad)150 static 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 /* Fail to get the native port, likely due to 2nd port is still
162 * unaffiliated. In such case default to 1st port and attached
163 * PF device.
164 */
165 native_port = false;
166 mdev = dev->mdev;
167 mdev_port_num = 1;
168 }
169 if (MLX5_CAP_GEN(dev->mdev, num_ports) == 1) {
170 /* set local port to one for Function-Per-Port HCA. */
171 mdev = dev->mdev;
172 mdev_port_num = 1;
173 }
174
175 /* Declaring support of extended counters */
176 if (in_mad->mad_hdr.attr_id == IB_PMA_CLASS_PORT_INFO) {
177 struct ib_class_port_info cpi = {};
178
179 cpi.capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
180 memcpy((out_mad->data + 40), &cpi, sizeof(cpi));
181 err = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
182 goto done;
183 }
184
185 if (in_mad->mad_hdr.attr_id == IB_PMA_PORT_COUNTERS_EXT) {
186 struct ib_pma_portcounters_ext *pma_cnt_ext =
187 (struct ib_pma_portcounters_ext *)(out_mad->data + 40);
188 int sz = MLX5_ST_SZ_BYTES(query_vport_counter_out);
189
190 out_cnt = kvzalloc(sz, GFP_KERNEL);
191 if (!out_cnt) {
192 err = IB_MAD_RESULT_FAILURE;
193 goto done;
194 }
195
196 err = mlx5_core_query_vport_counter(mdev, 0, 0, mdev_port_num,
197 out_cnt);
198 if (!err)
199 pma_cnt_ext_assign(pma_cnt_ext, out_cnt);
200 } else {
201 struct ib_pma_portcounters *pma_cnt =
202 (struct ib_pma_portcounters *)(out_mad->data + 40);
203 int sz = MLX5_ST_SZ_BYTES(ppcnt_reg);
204
205 out_cnt = kvzalloc(sz, GFP_KERNEL);
206 if (!out_cnt) {
207 err = IB_MAD_RESULT_FAILURE;
208 goto done;
209 }
210
211 err = mlx5_core_query_ib_ppcnt(mdev, mdev_port_num,
212 out_cnt, sz);
213 if (!err)
214 pma_cnt_assign(pma_cnt, out_cnt);
215 }
216 kvfree(out_cnt);
217 err = err ? IB_MAD_RESULT_FAILURE :
218 IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
219 done:
220 if (native_port)
221 mlx5_ib_put_native_port_mdev(dev, port_num);
222 return err;
223 }
224
mlx5_ib_process_mad(struct ib_device * ibdev,int mad_flags,u32 port_num,const struct ib_wc * in_wc,const struct ib_grh * in_grh,const struct ib_mad * in,struct ib_mad * out,size_t * out_mad_size,u16 * out_mad_pkey_index)225 int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u32 port_num,
226 const struct ib_wc *in_wc, const struct ib_grh *in_grh,
227 const struct ib_mad *in, struct ib_mad *out,
228 size_t *out_mad_size, u16 *out_mad_pkey_index)
229 {
230 struct mlx5_ib_dev *dev = to_mdev(ibdev);
231 u8 mgmt_class = in->mad_hdr.mgmt_class;
232 u8 method = in->mad_hdr.method;
233 u16 slid;
234 int err;
235
236 slid = in_wc ? ib_lid_cpu16(in_wc->slid) :
237 be16_to_cpu(IB_LID_PERMISSIVE);
238
239 if (method == IB_MGMT_METHOD_TRAP && !slid)
240 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
241
242 switch (mgmt_class) {
243 case IB_MGMT_CLASS_SUBN_LID_ROUTED:
244 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: {
245 if (method != IB_MGMT_METHOD_GET &&
246 method != IB_MGMT_METHOD_SET &&
247 method != IB_MGMT_METHOD_TRAP_REPRESS)
248 return IB_MAD_RESULT_SUCCESS;
249
250 /* Don't process SMInfo queries -- the SMA can't handle them.
251 */
252 if (in->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO)
253 return IB_MAD_RESULT_SUCCESS;
254 } break;
255 case IB_MGMT_CLASS_PERF_MGMT:
256 if (MLX5_CAP_GEN(dev->mdev, vport_counters) &&
257 method == IB_MGMT_METHOD_GET)
258 return process_pma_cmd(dev, port_num, in, out);
259 fallthrough;
260 case MLX5_IB_VENDOR_CLASS1:
261 case MLX5_IB_VENDOR_CLASS2:
262 case IB_MGMT_CLASS_CONG_MGMT: {
263 if (method != IB_MGMT_METHOD_GET &&
264 method != IB_MGMT_METHOD_SET)
265 return IB_MAD_RESULT_SUCCESS;
266 } break;
267 default:
268 return IB_MAD_RESULT_SUCCESS;
269 }
270
271 err = mlx5_MAD_IFC(to_mdev(ibdev), mad_flags & IB_MAD_IGNORE_MKEY,
272 mad_flags & IB_MAD_IGNORE_BKEY, port_num, in_wc,
273 in_grh, in, out);
274 if (err)
275 return IB_MAD_RESULT_FAILURE;
276
277 /* set return bit in status of directed route responses */
278 if (mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
279 out->mad_hdr.status |= cpu_to_be16(1 << 15);
280
281 if (method == IB_MGMT_METHOD_TRAP_REPRESS)
282 /* no response for trap repress */
283 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
284
285 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
286 }
287
mlx5_query_ext_port_caps(struct mlx5_ib_dev * dev,unsigned int port)288 int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, unsigned int port)
289 {
290 struct ib_smp *in_mad = NULL;
291 struct ib_smp *out_mad = NULL;
292 int err = -ENOMEM;
293 u16 packet_error;
294
295 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
296 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
297 if (!in_mad || !out_mad)
298 goto out;
299
300 ib_init_query_mad(in_mad);
301 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
302 in_mad->attr_mod = cpu_to_be32(port);
303
304 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
305
306 packet_error = be16_to_cpu(out_mad->status);
307
308 dev->port_caps[port - 1].ext_port_cap = (!err && !packet_error) ?
309 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0;
310
311 out:
312 kfree(in_mad);
313 kfree(out_mad);
314 return err;
315 }
316
mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device * ibdev,struct ib_smp * out_mad)317 static int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev,
318 struct ib_smp *out_mad)
319 {
320 struct ib_smp *in_mad = NULL;
321 int err = -ENOMEM;
322
323 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
324 if (!in_mad)
325 return -ENOMEM;
326
327 ib_init_query_mad(in_mad);
328 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
329
330 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad,
331 out_mad);
332
333 kfree(in_mad);
334 return err;
335 }
336
mlx5_query_mad_ifc_system_image_guid(struct ib_device * ibdev,__be64 * sys_image_guid)337 int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev,
338 __be64 *sys_image_guid)
339 {
340 struct ib_smp *out_mad = NULL;
341 int err = -ENOMEM;
342
343 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
344 if (!out_mad)
345 return -ENOMEM;
346
347 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
348 if (err)
349 goto out;
350
351 memcpy(sys_image_guid, out_mad->data + 4, 8);
352
353 out:
354 kfree(out_mad);
355
356 return err;
357 }
358
mlx5_query_mad_ifc_max_pkeys(struct ib_device * ibdev,u16 * max_pkeys)359 int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev,
360 u16 *max_pkeys)
361 {
362 struct ib_smp *out_mad = NULL;
363 int err = -ENOMEM;
364
365 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
366 if (!out_mad)
367 return -ENOMEM;
368
369 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
370 if (err)
371 goto out;
372
373 *max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28));
374
375 out:
376 kfree(out_mad);
377
378 return err;
379 }
380
mlx5_query_mad_ifc_vendor_id(struct ib_device * ibdev,u32 * vendor_id)381 int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev,
382 u32 *vendor_id)
383 {
384 struct ib_smp *out_mad = NULL;
385 int err = -ENOMEM;
386
387 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
388 if (!out_mad)
389 return -ENOMEM;
390
391 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
392 if (err)
393 goto out;
394
395 *vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) & 0xffff;
396
397 out:
398 kfree(out_mad);
399
400 return err;
401 }
402
mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev * dev,char * node_desc)403 int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc)
404 {
405 struct ib_smp *in_mad = NULL;
406 struct ib_smp *out_mad = NULL;
407 int err = -ENOMEM;
408
409 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
410 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
411 if (!in_mad || !out_mad)
412 goto out;
413
414 ib_init_query_mad(in_mad);
415 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
416
417 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
418 if (err)
419 goto out;
420
421 memcpy(node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
422 out:
423 kfree(in_mad);
424 kfree(out_mad);
425 return err;
426 }
427
mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev * dev,__be64 * node_guid)428 int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid)
429 {
430 struct ib_smp *in_mad = NULL;
431 struct ib_smp *out_mad = NULL;
432 int err = -ENOMEM;
433
434 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
435 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
436 if (!in_mad || !out_mad)
437 goto out;
438
439 ib_init_query_mad(in_mad);
440 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
441
442 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
443 if (err)
444 goto out;
445
446 memcpy(node_guid, out_mad->data + 12, 8);
447 out:
448 kfree(in_mad);
449 kfree(out_mad);
450 return err;
451 }
452
mlx5_query_mad_ifc_pkey(struct ib_device * ibdev,u32 port,u16 index,u16 * pkey)453 int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u32 port, u16 index,
454 u16 *pkey)
455 {
456 struct ib_smp *in_mad = NULL;
457 struct ib_smp *out_mad = NULL;
458 int err = -ENOMEM;
459
460 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
461 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
462 if (!in_mad || !out_mad)
463 goto out;
464
465 ib_init_query_mad(in_mad);
466 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
467 in_mad->attr_mod = cpu_to_be32(index / 32);
468
469 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
470 out_mad);
471 if (err)
472 goto out;
473
474 *pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]);
475
476 out:
477 kfree(in_mad);
478 kfree(out_mad);
479 return err;
480 }
481
mlx5_query_mad_ifc_gids(struct ib_device * ibdev,u32 port,int index,union ib_gid * gid)482 int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u32 port, int index,
483 union ib_gid *gid)
484 {
485 struct ib_smp *in_mad = NULL;
486 struct ib_smp *out_mad = NULL;
487 int err = -ENOMEM;
488
489 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
490 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
491 if (!in_mad || !out_mad)
492 goto out;
493
494 ib_init_query_mad(in_mad);
495 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
496 in_mad->attr_mod = cpu_to_be32(port);
497
498 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
499 out_mad);
500 if (err)
501 goto out;
502
503 memcpy(gid->raw, out_mad->data + 8, 8);
504
505 ib_init_query_mad(in_mad);
506 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
507 in_mad->attr_mod = cpu_to_be32(index / 8);
508
509 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
510 out_mad);
511 if (err)
512 goto out;
513
514 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
515
516 out:
517 kfree(in_mad);
518 kfree(out_mad);
519 return err;
520 }
521
mlx5_query_mad_ifc_port(struct ib_device * ibdev,u32 port,struct ib_port_attr * props)522 int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u32 port,
523 struct ib_port_attr *props)
524 {
525 struct mlx5_ib_dev *dev = to_mdev(ibdev);
526 struct mlx5_core_dev *mdev = dev->mdev;
527 struct ib_smp *in_mad = NULL;
528 struct ib_smp *out_mad = NULL;
529 int ext_active_speed;
530 int err = -ENOMEM;
531
532 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
533 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
534 if (!in_mad || !out_mad)
535 goto out;
536
537 /* props being zeroed by the caller, avoid zeroing it here */
538
539 ib_init_query_mad(in_mad);
540 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
541 in_mad->attr_mod = cpu_to_be32(port);
542
543 err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad);
544 if (err) {
545 mlx5_ib_warn(dev, "err %d\n", err);
546 goto out;
547 }
548
549 props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16));
550 props->lmc = out_mad->data[34] & 0x7;
551 props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18));
552 props->sm_sl = out_mad->data[36] & 0xf;
553 props->state = out_mad->data[32] & 0xf;
554 props->phys_state = out_mad->data[33] >> 4;
555 props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20));
556 props->gid_tbl_len = out_mad->data[50];
557 props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg);
558 props->pkey_tbl_len = dev->pkey_table_len;
559 props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46));
560 props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48));
561 props->active_width = out_mad->data[31] & 0xf;
562 props->active_speed = out_mad->data[35] >> 4;
563 props->max_mtu = out_mad->data[41] & 0xf;
564 props->active_mtu = out_mad->data[36] >> 4;
565 props->subnet_timeout = out_mad->data[51] & 0x1f;
566 props->max_vl_num = out_mad->data[37] >> 4;
567 props->init_type_reply = out_mad->data[41] >> 4;
568
569 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP) {
570 props->port_cap_flags2 =
571 be16_to_cpup((__be16 *)(out_mad->data + 60));
572
573 if (props->port_cap_flags2 & IB_PORT_LINK_WIDTH_2X_SUP)
574 props->active_width = out_mad->data[31] & 0x1f;
575 }
576
577 /* Check if extended speeds (EDR/FDR/...) are supported */
578 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
579 ext_active_speed = out_mad->data[62] >> 4;
580
581 switch (ext_active_speed) {
582 case 1:
583 props->active_speed = 16; /* FDR */
584 break;
585 case 2:
586 props->active_speed = 32; /* EDR */
587 break;
588 case 4:
589 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP &&
590 props->port_cap_flags2 & IB_PORT_LINK_SPEED_HDR_SUP)
591 props->active_speed = IB_SPEED_HDR;
592 break;
593 case 8:
594 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP &&
595 props->port_cap_flags2 & IB_PORT_LINK_SPEED_NDR_SUP)
596 props->active_speed = IB_SPEED_NDR;
597 break;
598 }
599 }
600
601 /* If reported active speed is QDR, check if is FDR-10 */
602 if (props->active_speed == 4) {
603 if (dev->port_caps[port - 1].ext_port_cap &
604 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
605 ib_init_query_mad(in_mad);
606 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
607 in_mad->attr_mod = cpu_to_be32(port);
608
609 err = mlx5_MAD_IFC(dev, 1, 1, port,
610 NULL, NULL, in_mad, out_mad);
611 if (err)
612 goto out;
613
614 /* Checking LinkSpeedActive for FDR-10 */
615 if (out_mad->data[15] & 0x1)
616 props->active_speed = 8;
617 }
618 }
619
620 out:
621 kfree(in_mad);
622 kfree(out_mad);
623
624 return err;
625 }
626