?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / infiniband / hw / mlx5 / mad.c
blob14e0c17de6a97922b619b8b031614bf140f50483
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/cmd.h>
34 #include <linux/mlx5/vport.h>
35 #include <rdma/ib_mad.h>
36 #include <rdma/ib_smi.h>
37 #include <rdma/ib_pma.h>
38 #include "mlx5_ib.h"
39 #include "cmd.h"
40
41 enum {
42 MLX5_IB_VENDOR_CLASS1 = 0x9,
43 MLX5_IB_VENDOR_CLASS2 = 0xa
44 };
45
46 static bool can_do_mad_ifc(struct mlx5_ib_dev *dev, u8 port_num,
47 struct ib_mad *in_mad)
48 {
49 if (in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED &&
50 in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
51 return true;
52 return dev->mdev->port_caps[port_num - 1].has_smi;
53 }
54
55 static int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey,
56 int ignore_bkey, u8 port, const struct ib_wc *in_wc,
57 const struct ib_grh *in_grh, const void *in_mad,
58 void *response_mad)
59 {
60 u8 op_modifier = 0;
61
62 if (!can_do_mad_ifc(dev, port, (struct ib_mad *)in_mad))
63 return -EPERM;
64
65 /* Key check traps can't be generated unless we have in_wc to
66 * tell us where to send the trap.
67 */
68 if (ignore_mkey || !in_wc)
69 op_modifier |= 0x1;
70 if (ignore_bkey || !in_wc)
71 op_modifier |= 0x2;
72
73 return mlx5_cmd_mad_ifc(dev->mdev, in_mad, response_mad, op_modifier,
74 port);
75 }
76
77 static void pma_cnt_ext_assign(struct ib_pma_portcounters_ext *pma_cnt_ext,
78 void *out)
79 {
80 #define MLX5_SUM_CNT(p, cntr1, cntr2) \
81 (MLX5_GET64(query_vport_counter_out, p, cntr1) + \
82 MLX5_GET64(query_vport_counter_out, p, cntr2))
83
84 pma_cnt_ext->port_xmit_data =
85 cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.octets,
86 transmitted_ib_multicast.octets) >> 2);
87 pma_cnt_ext->port_rcv_data =
88 cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.octets,
89 received_ib_multicast.octets) >> 2);
90 pma_cnt_ext->port_xmit_packets =
91 cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.packets,
92 transmitted_ib_multicast.packets));
93 pma_cnt_ext->port_rcv_packets =
94 cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.packets,
95 received_ib_multicast.packets));
96 pma_cnt_ext->port_unicast_xmit_packets =
97 MLX5_GET64_BE(query_vport_counter_out,
98 out, transmitted_ib_unicast.packets);
99 pma_cnt_ext->port_unicast_rcv_packets =
100 MLX5_GET64_BE(query_vport_counter_out,
101 out, received_ib_unicast.packets);
102 pma_cnt_ext->port_multicast_xmit_packets =
103 MLX5_GET64_BE(query_vport_counter_out,
104 out, transmitted_ib_multicast.packets);
105 pma_cnt_ext->port_multicast_rcv_packets =
106 MLX5_GET64_BE(query_vport_counter_out,
107 out, received_ib_multicast.packets);
108 }
109
110 static void pma_cnt_assign(struct ib_pma_portcounters *pma_cnt,
111 void *out)
112 {
113 /* Traffic counters will be reported in
114 * their 64bit form via ib_pma_portcounters_ext by default.
115 */
116 void *out_pma = MLX5_ADDR_OF(ppcnt_reg, out,
117 counter_set);
118
119 #define MLX5_ASSIGN_PMA_CNTR(counter_var, counter_name) { \
120 counter_var = MLX5_GET_BE(typeof(counter_var), \
121 ib_port_cntrs_grp_data_layout, \
122 out_pma, counter_name); \
123 }
124
125 MLX5_ASSIGN_PMA_CNTR(pma_cnt->symbol_error_counter,
126 symbol_error_counter);
127 MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_error_recovery_counter,
128 link_error_recovery_counter);
129 MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_downed_counter,
130 link_downed_counter);
131 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_errors,
132 port_rcv_errors);
133 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_remphys_errors,
134 port_rcv_remote_physical_errors);
135 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_switch_relay_errors,
136 port_rcv_switch_relay_errors);
137 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_discards,
138 port_xmit_discards);
139 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_constraint_errors,
140 port_xmit_constraint_errors);
141 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_wait,
142 port_xmit_wait);
143 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_constraint_errors,
144 port_rcv_constraint_errors);
145 MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_overrun_errors,
146 link_overrun_errors);
147 MLX5_ASSIGN_PMA_CNTR(pma_cnt->vl15_dropped,
148 vl_15_dropped);
149 }
150
151 static int process_pma_cmd(struct mlx5_ib_dev *dev, u8 port_num,
152 const struct ib_mad *in_mad, struct ib_mad *out_mad)
153 {
154 struct mlx5_core_dev *mdev;
155 bool native_port = true;
156 u8 mdev_port_num;
157 void *out_cnt;
158 int err;
159
160 mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
161 if (!mdev) {
162 /* Fail to get the native port, likely due to 2nd port is still
163 * unaffiliated. In such case default to 1st port and attached
164 * PF device.
165 */
166 native_port = false;
167 mdev = dev->mdev;
168 mdev_port_num = 1;
169 }
170 /* Declaring support of extended counters */
171 if (in_mad->mad_hdr.attr_id == IB_PMA_CLASS_PORT_INFO) {
172 struct ib_class_port_info cpi = {};
173
174 cpi.capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
175 memcpy((out_mad->data + 40), &cpi, sizeof(cpi));
176 err = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
177 goto done;
178 }
179
180 if (in_mad->mad_hdr.attr_id == IB_PMA_PORT_COUNTERS_EXT) {
181 struct ib_pma_portcounters_ext *pma_cnt_ext =
182 (struct ib_pma_portcounters_ext *)(out_mad->data + 40);
183 int sz = MLX5_ST_SZ_BYTES(query_vport_counter_out);
184
185 out_cnt = kvzalloc(sz, GFP_KERNEL);
186 if (!out_cnt) {
187 err = IB_MAD_RESULT_FAILURE;
188 goto done;
189 }
190
191 err = mlx5_core_query_vport_counter(mdev, 0, 0,
192 mdev_port_num, out_cnt, sz);
193 if (!err)
194 pma_cnt_ext_assign(pma_cnt_ext, out_cnt);
195 } else {
196 struct ib_pma_portcounters *pma_cnt =
197 (struct ib_pma_portcounters *)(out_mad->data + 40);
198 int sz = MLX5_ST_SZ_BYTES(ppcnt_reg);
199
200 out_cnt = kvzalloc(sz, GFP_KERNEL);
201 if (!out_cnt) {
202 err = IB_MAD_RESULT_FAILURE;
203 goto done;
204 }
205
206 err = mlx5_core_query_ib_ppcnt(mdev, mdev_port_num,
207 out_cnt, sz);
208 if (!err)
209 pma_cnt_assign(pma_cnt, out_cnt);
210 }
211 kvfree(out_cnt);
212 err = err ? IB_MAD_RESULT_FAILURE :
213 IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
214 done:
215 if (native_port)
216 mlx5_ib_put_native_port_mdev(dev, port_num);
217 return err;
218 }
219
220 int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
221 const struct ib_wc *in_wc, const struct ib_grh *in_grh,
222 const struct ib_mad *in, struct ib_mad *out,
223 size_t *out_mad_size, u16 *out_mad_pkey_index)
224 {
225 struct mlx5_ib_dev *dev = to_mdev(ibdev);
226 u8 mgmt_class = in->mad_hdr.mgmt_class;
227 u8 method = in->mad_hdr.method;
228 u16 slid;
229 int err;
230
231 slid = in_wc ? ib_lid_cpu16(in_wc->slid) :
232 be16_to_cpu(IB_LID_PERMISSIVE);
233
234 if (method == IB_MGMT_METHOD_TRAP && !slid)
235 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
236
237 switch (mgmt_class) {
238 case IB_MGMT_CLASS_SUBN_LID_ROUTED:
239 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: {
240 if (method != IB_MGMT_METHOD_GET &&
241 method != IB_MGMT_METHOD_SET &&
242 method != IB_MGMT_METHOD_TRAP_REPRESS)
243 return IB_MAD_RESULT_SUCCESS;
244
245 /* Don't process SMInfo queries -- the SMA can't handle them.
246 */
247 if (in->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO)
248 return IB_MAD_RESULT_SUCCESS;
249 } break;
250 case IB_MGMT_CLASS_PERF_MGMT:
251 if (MLX5_CAP_GEN(dev->mdev, vport_counters) &&
252 method == IB_MGMT_METHOD_GET)
253 return process_pma_cmd(dev, port_num, in, out);
254 /* fallthrough */
255 case MLX5_IB_VENDOR_CLASS1:
256 /* fallthrough */
257 case MLX5_IB_VENDOR_CLASS2:
258 case IB_MGMT_CLASS_CONG_MGMT: {
259 if (method != IB_MGMT_METHOD_GET &&
260 method != IB_MGMT_METHOD_SET)
261 return IB_MAD_RESULT_SUCCESS;
262 } break;
263 default:
264 return IB_MAD_RESULT_SUCCESS;
265 }
266
267 err = mlx5_MAD_IFC(to_mdev(ibdev), mad_flags & IB_MAD_IGNORE_MKEY,
268 mad_flags & IB_MAD_IGNORE_BKEY, port_num, in_wc,
269 in_grh, in, out);
270 if (err)
271 return IB_MAD_RESULT_FAILURE;
272
273 /* set return bit in status of directed route responses */
274 if (mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
275 out->mad_hdr.status |= cpu_to_be16(1 << 15);
276
277 if (method == IB_MGMT_METHOD_TRAP_REPRESS)
278 /* no response for trap repress */
279 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
280
281 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
282 }
283
284 int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port)
285 {
286 struct ib_smp *in_mad = NULL;
287 struct ib_smp *out_mad = NULL;
288 int err = -ENOMEM;
289 u16 packet_error;
290
291 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
292 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
293 if (!in_mad || !out_mad)
294 goto out;
295
296 init_query_mad(in_mad);
297 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
298 in_mad->attr_mod = cpu_to_be32(port);
299
300 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
301
302 packet_error = be16_to_cpu(out_mad->status);
303
304 dev->mdev->port_caps[port - 1].ext_port_cap = (!err && !packet_error) ?
305 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0;
306
307 out:
308 kfree(in_mad);
309 kfree(out_mad);
310 return err;
311 }
312
313 int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev,
314 struct ib_smp *out_mad)
315 {
316 struct ib_smp *in_mad = NULL;
317 int err = -ENOMEM;
318
319 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
320 if (!in_mad)
321 return -ENOMEM;
322
323 init_query_mad(in_mad);
324 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
325
326 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad,
327 out_mad);
328
329 kfree(in_mad);
330 return err;
331 }
332
333 int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev,
334 __be64 *sys_image_guid)
335 {
336 struct ib_smp *out_mad = NULL;
337 int err = -ENOMEM;
338
339 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
340 if (!out_mad)
341 return -ENOMEM;
342
343 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
344 if (err)
345 goto out;
346
347 memcpy(sys_image_guid, out_mad->data + 4, 8);
348
349 out:
350 kfree(out_mad);
351
352 return err;
353 }
354
355 int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev,
356 u16 *max_pkeys)
357 {
358 struct ib_smp *out_mad = NULL;
359 int err = -ENOMEM;
360
361 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
362 if (!out_mad)
363 return -ENOMEM;
364
365 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
366 if (err)
367 goto out;
368
369 *max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28));
370
371 out:
372 kfree(out_mad);
373
374 return err;
375 }
376
377 int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev,
378 u32 *vendor_id)
379 {
380 struct ib_smp *out_mad = NULL;
381 int err = -ENOMEM;
382
383 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
384 if (!out_mad)
385 return -ENOMEM;
386
387 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
388 if (err)
389 goto out;
390
391 *vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) & 0xffff;
392
393 out:
394 kfree(out_mad);
395
396 return err;
397 }
398
399 int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc)
400 {
401 struct ib_smp *in_mad = NULL;
402 struct ib_smp *out_mad = NULL;
403 int err = -ENOMEM;
404
405 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
406 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
407 if (!in_mad || !out_mad)
408 goto out;
409
410 init_query_mad(in_mad);
411 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
412
413 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
414 if (err)
415 goto out;
416
417 memcpy(node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
418 out:
419 kfree(in_mad);
420 kfree(out_mad);
421 return err;
422 }
423
424 int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid)
425 {
426 struct ib_smp *in_mad = NULL;
427 struct ib_smp *out_mad = NULL;
428 int err = -ENOMEM;
429
430 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
431 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
432 if (!in_mad || !out_mad)
433 goto out;
434
435 init_query_mad(in_mad);
436 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
437
438 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
439 if (err)
440 goto out;
441
442 memcpy(node_guid, out_mad->data + 12, 8);
443 out:
444 kfree(in_mad);
445 kfree(out_mad);
446 return err;
447 }
448
449 int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u8 port, u16 index,
450 u16 *pkey)
451 {
452 struct ib_smp *in_mad = NULL;
453 struct ib_smp *out_mad = NULL;
454 int err = -ENOMEM;
455
456 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
457 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
458 if (!in_mad || !out_mad)
459 goto out;
460
461 init_query_mad(in_mad);
462 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
463 in_mad->attr_mod = cpu_to_be32(index / 32);
464
465 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
466 out_mad);
467 if (err)
468 goto out;
469
470 *pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]);
471
472 out:
473 kfree(in_mad);
474 kfree(out_mad);
475 return err;
476 }
477
478 int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u8 port, int index,
479 union ib_gid *gid)
480 {
481 struct ib_smp *in_mad = NULL;
482 struct ib_smp *out_mad = NULL;
483 int err = -ENOMEM;
484
485 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
486 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
487 if (!in_mad || !out_mad)
488 goto out;
489
490 init_query_mad(in_mad);
491 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
492 in_mad->attr_mod = cpu_to_be32(port);
493
494 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
495 out_mad);
496 if (err)
497 goto out;
498
499 memcpy(gid->raw, out_mad->data + 8, 8);
500
501 init_query_mad(in_mad);
502 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
503 in_mad->attr_mod = cpu_to_be32(index / 8);
504
505 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
506 out_mad);
507 if (err)
508 goto out;
509
510 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
511
512 out:
513 kfree(in_mad);
514 kfree(out_mad);
515 return err;
516 }
517
518 int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u8 port,
519 struct ib_port_attr *props)
520 {
521 struct mlx5_ib_dev *dev = to_mdev(ibdev);
522 struct mlx5_core_dev *mdev = dev->mdev;
523 struct ib_smp *in_mad = NULL;
524 struct ib_smp *out_mad = NULL;
525 int ext_active_speed;
526 int err = -ENOMEM;
527
528 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
529 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
530 if (!in_mad || !out_mad)
531 goto out;
532
533 /* props being zeroed by the caller, avoid zeroing it here */
534
535 init_query_mad(in_mad);
536 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
537 in_mad->attr_mod = cpu_to_be32(port);
538
539 err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad);
540 if (err) {
541 mlx5_ib_warn(dev, "err %d\n", err);
542 goto out;
543 }
544
545 props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16));
546 props->lmc = out_mad->data[34] & 0x7;
547 props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18));
548 props->sm_sl = out_mad->data[36] & 0xf;
549 props->state = out_mad->data[32] & 0xf;
550 props->phys_state = out_mad->data[33] >> 4;
551 props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20));
552 props->gid_tbl_len = out_mad->data[50];
553 props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg);
554 props->pkey_tbl_len = mdev->port_caps[port - 1].pkey_table_len;
555 props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46));
556 props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48));
557 props->active_width = out_mad->data[31] & 0xf;
558 props->active_speed = out_mad->data[35] >> 4;
559 props->max_mtu = out_mad->data[41] & 0xf;
560 props->active_mtu = out_mad->data[36] >> 4;
561 props->subnet_timeout = out_mad->data[51] & 0x1f;
562 props->max_vl_num = out_mad->data[37] >> 4;
563 props->init_type_reply = out_mad->data[41] >> 4;
564
565 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP) {
566 props->port_cap_flags2 =
567 be16_to_cpup((__be16 *)(out_mad->data + 60));
568
569 if (props->port_cap_flags2 & IB_PORT_LINK_WIDTH_2X_SUP)
570 props->active_width = out_mad->data[31] & 0x1f;
571 }
572
573 /* Check if extended speeds (EDR/FDR/...) are supported */
574 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
575 ext_active_speed = out_mad->data[62] >> 4;
576
577 switch (ext_active_speed) {
578 case 1:
579 props->active_speed = 16; /* FDR */
580 break;
581 case 2:
582 props->active_speed = 32; /* EDR */
583 break;
584 case 4:
585 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP &&
586 props->port_cap_flags2 & IB_PORT_LINK_SPEED_HDR_SUP)
587 props->active_speed = IB_SPEED_HDR;
588 break;
589 }
590 }
591
592 /* If reported active speed is QDR, check if is FDR-10 */
593 if (props->active_speed == 4) {
594 if (mdev->port_caps[port - 1].ext_port_cap &
595 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
596 init_query_mad(in_mad);
597 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
598 in_mad->attr_mod = cpu_to_be32(port);
599
600 err = mlx5_MAD_IFC(dev, 1, 1, port,
601 NULL, NULL, in_mad, out_mad);
602 if (err)
603 goto out;
604
605 /* Checking LinkSpeedActive for FDR-10 */
606 if (out_mad->data[15] & 0x1)
607 props->active_speed = 8;
608 }
609 }
610
611 out:
612 kfree(in_mad);
613 kfree(out_mad);
614
615 return err;
616 }
Linux with added FPC-III support