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
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,u8 port_num,struct ib_mad * in_mad)45 static bool can_do_mad_ifc(struct mlx5_ib_dev *dev, u8 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->mdev->port_caps[port_num - 1].has_smi;
52 }
53
mlx5_MAD_IFC(struct mlx5_ib_dev * dev,int ignore_mkey,int ignore_bkey,u8 port,const struct ib_wc * in_wc,const struct ib_grh * in_grh,const void * in_mad,void * response_mad)54 int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey,
55 u8 port, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
56 const void *in_mad, void *response_mad)
57 {
58 u8 op_modifier = 0;
59
60 if (!can_do_mad_ifc(dev, port, (struct ib_mad *)in_mad))
61 return -EPERM;
62
63 /* Key check traps can't be generated unless we have in_wc to
64 * tell us where to send the trap.
65 */
66 if (ignore_mkey || !in_wc)
67 op_modifier |= 0x1;
68 if (ignore_bkey || !in_wc)
69 op_modifier |= 0x2;
70
71 return mlx5_core_mad_ifc(dev->mdev, in_mad, response_mad, op_modifier, port);
72 }
73
process_mad(struct ib_device * ibdev,int mad_flags,u8 port_num,const struct ib_wc * in_wc,const struct ib_grh * in_grh,const struct ib_mad * in_mad,struct ib_mad * out_mad)74 static int process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
75 const struct ib_wc *in_wc, const struct ib_grh *in_grh,
76 const struct ib_mad *in_mad, struct ib_mad *out_mad)
77 {
78 u16 slid;
79 int err;
80
81 slid = in_wc ? ib_lid_cpu16(in_wc->slid) : be16_to_cpu(IB_LID_PERMISSIVE);
82
83 if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0)
84 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
85
86 if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED ||
87 in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
88 if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET &&
89 in_mad->mad_hdr.method != IB_MGMT_METHOD_SET &&
90 in_mad->mad_hdr.method != IB_MGMT_METHOD_TRAP_REPRESS)
91 return IB_MAD_RESULT_SUCCESS;
92
93 /* Don't process SMInfo queries -- the SMA can't handle them.
94 */
95 if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO)
96 return IB_MAD_RESULT_SUCCESS;
97 } else if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT ||
98 in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS1 ||
99 in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS2 ||
100 in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_CONG_MGMT) {
101 if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET &&
102 in_mad->mad_hdr.method != IB_MGMT_METHOD_SET)
103 return IB_MAD_RESULT_SUCCESS;
104 } else {
105 return IB_MAD_RESULT_SUCCESS;
106 }
107
108 err = mlx5_MAD_IFC(to_mdev(ibdev),
109 mad_flags & IB_MAD_IGNORE_MKEY,
110 mad_flags & IB_MAD_IGNORE_BKEY,
111 port_num, in_wc, in_grh, in_mad, out_mad);
112 if (err)
113 return IB_MAD_RESULT_FAILURE;
114
115 /* set return bit in status of directed route responses */
116 if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
117 out_mad->mad_hdr.status |= cpu_to_be16(1 << 15);
118
119 if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS)
120 /* no response for trap repress */
121 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
122
123 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
124 }
125
pma_cnt_ext_assign(struct ib_pma_portcounters_ext * pma_cnt_ext,void * out)126 static void pma_cnt_ext_assign(struct ib_pma_portcounters_ext *pma_cnt_ext,
127 void *out)
128 {
129 #define MLX5_SUM_CNT(p, cntr1, cntr2) \
130 (MLX5_GET64(query_vport_counter_out, p, cntr1) + \
131 MLX5_GET64(query_vport_counter_out, p, cntr2))
132
133 pma_cnt_ext->port_xmit_data =
134 cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.octets,
135 transmitted_ib_multicast.octets) >> 2);
136 pma_cnt_ext->port_rcv_data =
137 cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.octets,
138 received_ib_multicast.octets) >> 2);
139 pma_cnt_ext->port_xmit_packets =
140 cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.packets,
141 transmitted_ib_multicast.packets));
142 pma_cnt_ext->port_rcv_packets =
143 cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.packets,
144 received_ib_multicast.packets));
145 pma_cnt_ext->port_unicast_xmit_packets =
146 MLX5_GET64_BE(query_vport_counter_out,
147 out, transmitted_ib_unicast.packets);
148 pma_cnt_ext->port_unicast_rcv_packets =
149 MLX5_GET64_BE(query_vport_counter_out,
150 out, received_ib_unicast.packets);
151 pma_cnt_ext->port_multicast_xmit_packets =
152 MLX5_GET64_BE(query_vport_counter_out,
153 out, transmitted_ib_multicast.packets);
154 pma_cnt_ext->port_multicast_rcv_packets =
155 MLX5_GET64_BE(query_vport_counter_out,
156 out, received_ib_multicast.packets);
157 }
158
pma_cnt_assign(struct ib_pma_portcounters * pma_cnt,void * out)159 static void pma_cnt_assign(struct ib_pma_portcounters *pma_cnt,
160 void *out)
161 {
162 /* Traffic counters will be reported in
163 * their 64bit form via ib_pma_portcounters_ext by default.
164 */
165 void *out_pma = MLX5_ADDR_OF(ppcnt_reg, out,
166 counter_set);
167
168 #define MLX5_ASSIGN_PMA_CNTR(counter_var, counter_name) { \
169 counter_var = MLX5_GET_BE(typeof(counter_var), \
170 ib_port_cntrs_grp_data_layout, \
171 out_pma, counter_name); \
172 }
173
174 MLX5_ASSIGN_PMA_CNTR(pma_cnt->symbol_error_counter,
175 symbol_error_counter);
176 MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_error_recovery_counter,
177 link_error_recovery_counter);
178 MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_downed_counter,
179 link_downed_counter);
180 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_errors,
181 port_rcv_errors);
182 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_remphys_errors,
183 port_rcv_remote_physical_errors);
184 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_switch_relay_errors,
185 port_rcv_switch_relay_errors);
186 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_discards,
187 port_xmit_discards);
188 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_constraint_errors,
189 port_xmit_constraint_errors);
190 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_wait,
191 port_xmit_wait);
192 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_constraint_errors,
193 port_rcv_constraint_errors);
194 MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_overrun_errors,
195 link_overrun_errors);
196 MLX5_ASSIGN_PMA_CNTR(pma_cnt->vl15_dropped,
197 vl_15_dropped);
198 }
199
process_pma_cmd(struct mlx5_ib_dev * dev,u8 port_num,const struct ib_mad * in_mad,struct ib_mad * out_mad)200 static int process_pma_cmd(struct mlx5_ib_dev *dev, u8 port_num,
201 const struct ib_mad *in_mad, struct ib_mad *out_mad)
202 {
203 struct mlx5_core_dev *mdev;
204 bool native_port = true;
205 u8 mdev_port_num;
206 void *out_cnt;
207 int err;
208
209 mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
210 if (!mdev) {
211 /* Fail to get the native port, likely due to 2nd port is still
212 * unaffiliated. In such case default to 1st port and attached
213 * PF device.
214 */
215 native_port = false;
216 mdev = dev->mdev;
217 mdev_port_num = 1;
218 }
219 /* Declaring support of extended counters */
220 if (in_mad->mad_hdr.attr_id == IB_PMA_CLASS_PORT_INFO) {
221 struct ib_class_port_info cpi = {};
222
223 cpi.capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
224 memcpy((out_mad->data + 40), &cpi, sizeof(cpi));
225 err = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
226 goto done;
227 }
228
229 if (in_mad->mad_hdr.attr_id == IB_PMA_PORT_COUNTERS_EXT) {
230 struct ib_pma_portcounters_ext *pma_cnt_ext =
231 (struct ib_pma_portcounters_ext *)(out_mad->data + 40);
232 int sz = MLX5_ST_SZ_BYTES(query_vport_counter_out);
233
234 out_cnt = kvzalloc(sz, GFP_KERNEL);
235 if (!out_cnt) {
236 err = IB_MAD_RESULT_FAILURE;
237 goto done;
238 }
239
240 err = mlx5_core_query_vport_counter(mdev, 0, 0,
241 mdev_port_num, out_cnt, sz);
242 if (!err)
243 pma_cnt_ext_assign(pma_cnt_ext, out_cnt);
244 } else {
245 struct ib_pma_portcounters *pma_cnt =
246 (struct ib_pma_portcounters *)(out_mad->data + 40);
247 int sz = MLX5_ST_SZ_BYTES(ppcnt_reg);
248
249 out_cnt = kvzalloc(sz, GFP_KERNEL);
250 if (!out_cnt) {
251 err = IB_MAD_RESULT_FAILURE;
252 goto done;
253 }
254
255 err = mlx5_core_query_ib_ppcnt(mdev, mdev_port_num,
256 out_cnt, sz);
257 if (!err)
258 pma_cnt_assign(pma_cnt, out_cnt);
259 }
260 kvfree(out_cnt);
261 err = err ? IB_MAD_RESULT_FAILURE :
262 IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
263 done:
264 if (native_port)
265 mlx5_ib_put_native_port_mdev(dev, port_num);
266 return err;
267 }
268
mlx5_ib_process_mad(struct ib_device * ibdev,int mad_flags,u8 port_num,const struct ib_wc * in_wc,const struct ib_grh * in_grh,const struct ib_mad_hdr * in,size_t in_mad_size,struct ib_mad_hdr * out,size_t * out_mad_size,u16 * out_mad_pkey_index)269 int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
270 const struct ib_wc *in_wc, const struct ib_grh *in_grh,
271 const struct ib_mad_hdr *in, size_t in_mad_size,
272 struct ib_mad_hdr *out, size_t *out_mad_size,
273 u16 *out_mad_pkey_index)
274 {
275 struct mlx5_ib_dev *dev = to_mdev(ibdev);
276 const struct ib_mad *in_mad = (const struct ib_mad *)in;
277 struct ib_mad *out_mad = (struct ib_mad *)out;
278 int ret;
279
280 if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) ||
281 *out_mad_size != sizeof(*out_mad)))
282 return IB_MAD_RESULT_FAILURE;
283
284 memset(out_mad->data, 0, sizeof(out_mad->data));
285
286 if (MLX5_CAP_GEN(dev->mdev, vport_counters) &&
287 in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT &&
288 in_mad->mad_hdr.method == IB_MGMT_METHOD_GET) {
289 ret = process_pma_cmd(dev, port_num, in_mad, out_mad);
290 } else {
291 ret = process_mad(ibdev, mad_flags, port_num, in_wc, in_grh,
292 in_mad, out_mad);
293 }
294 return ret;
295 }
296
mlx5_query_ext_port_caps(struct mlx5_ib_dev * dev,u8 port)297 int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port)
298 {
299 struct ib_smp *in_mad = NULL;
300 struct ib_smp *out_mad = NULL;
301 int err = -ENOMEM;
302 u16 packet_error;
303
304 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
305 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
306 if (!in_mad || !out_mad)
307 goto out;
308
309 init_query_mad(in_mad);
310 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
311 in_mad->attr_mod = cpu_to_be32(port);
312
313 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
314
315 packet_error = be16_to_cpu(out_mad->status);
316
317 dev->mdev->port_caps[port - 1].ext_port_cap = (!err && !packet_error) ?
318 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0;
319
320 out:
321 kfree(in_mad);
322 kfree(out_mad);
323 return err;
324 }
325
mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device * ibdev,struct ib_smp * out_mad)326 int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev,
327 struct ib_smp *out_mad)
328 {
329 struct ib_smp *in_mad = NULL;
330 int err = -ENOMEM;
331
332 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
333 if (!in_mad)
334 return -ENOMEM;
335
336 init_query_mad(in_mad);
337 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
338
339 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad,
340 out_mad);
341
342 kfree(in_mad);
343 return err;
344 }
345
mlx5_query_mad_ifc_system_image_guid(struct ib_device * ibdev,__be64 * sys_image_guid)346 int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev,
347 __be64 *sys_image_guid)
348 {
349 struct ib_smp *out_mad = NULL;
350 int err = -ENOMEM;
351
352 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
353 if (!out_mad)
354 return -ENOMEM;
355
356 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
357 if (err)
358 goto out;
359
360 memcpy(sys_image_guid, out_mad->data + 4, 8);
361
362 out:
363 kfree(out_mad);
364
365 return err;
366 }
367
mlx5_query_mad_ifc_max_pkeys(struct ib_device * ibdev,u16 * max_pkeys)368 int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev,
369 u16 *max_pkeys)
370 {
371 struct ib_smp *out_mad = NULL;
372 int err = -ENOMEM;
373
374 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
375 if (!out_mad)
376 return -ENOMEM;
377
378 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
379 if (err)
380 goto out;
381
382 *max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28));
383
384 out:
385 kfree(out_mad);
386
387 return err;
388 }
389
mlx5_query_mad_ifc_vendor_id(struct ib_device * ibdev,u32 * vendor_id)390 int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev,
391 u32 *vendor_id)
392 {
393 struct ib_smp *out_mad = NULL;
394 int err = -ENOMEM;
395
396 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
397 if (!out_mad)
398 return -ENOMEM;
399
400 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
401 if (err)
402 goto out;
403
404 *vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) & 0xffff;
405
406 out:
407 kfree(out_mad);
408
409 return err;
410 }
411
mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev * dev,char * node_desc)412 int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc)
413 {
414 struct ib_smp *in_mad = NULL;
415 struct ib_smp *out_mad = NULL;
416 int err = -ENOMEM;
417
418 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
419 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
420 if (!in_mad || !out_mad)
421 goto out;
422
423 init_query_mad(in_mad);
424 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
425
426 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
427 if (err)
428 goto out;
429
430 memcpy(node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
431 out:
432 kfree(in_mad);
433 kfree(out_mad);
434 return err;
435 }
436
mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev * dev,__be64 * node_guid)437 int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid)
438 {
439 struct ib_smp *in_mad = NULL;
440 struct ib_smp *out_mad = NULL;
441 int err = -ENOMEM;
442
443 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
444 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
445 if (!in_mad || !out_mad)
446 goto out;
447
448 init_query_mad(in_mad);
449 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
450
451 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
452 if (err)
453 goto out;
454
455 memcpy(node_guid, out_mad->data + 12, 8);
456 out:
457 kfree(in_mad);
458 kfree(out_mad);
459 return err;
460 }
461
mlx5_query_mad_ifc_pkey(struct ib_device * ibdev,u8 port,u16 index,u16 * pkey)462 int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u8 port, u16 index,
463 u16 *pkey)
464 {
465 struct ib_smp *in_mad = NULL;
466 struct ib_smp *out_mad = NULL;
467 int err = -ENOMEM;
468
469 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
470 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
471 if (!in_mad || !out_mad)
472 goto out;
473
474 init_query_mad(in_mad);
475 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
476 in_mad->attr_mod = cpu_to_be32(index / 32);
477
478 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
479 out_mad);
480 if (err)
481 goto out;
482
483 *pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]);
484
485 out:
486 kfree(in_mad);
487 kfree(out_mad);
488 return err;
489 }
490
mlx5_query_mad_ifc_gids(struct ib_device * ibdev,u8 port,int index,union ib_gid * gid)491 int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u8 port, int index,
492 union ib_gid *gid)
493 {
494 struct ib_smp *in_mad = NULL;
495 struct ib_smp *out_mad = NULL;
496 int err = -ENOMEM;
497
498 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
499 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
500 if (!in_mad || !out_mad)
501 goto out;
502
503 init_query_mad(in_mad);
504 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
505 in_mad->attr_mod = cpu_to_be32(port);
506
507 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
508 out_mad);
509 if (err)
510 goto out;
511
512 memcpy(gid->raw, out_mad->data + 8, 8);
513
514 init_query_mad(in_mad);
515 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
516 in_mad->attr_mod = cpu_to_be32(index / 8);
517
518 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
519 out_mad);
520 if (err)
521 goto out;
522
523 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
524
525 out:
526 kfree(in_mad);
527 kfree(out_mad);
528 return err;
529 }
530
mlx5_query_mad_ifc_port(struct ib_device * ibdev,u8 port,struct ib_port_attr * props)531 int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u8 port,
532 struct ib_port_attr *props)
533 {
534 struct mlx5_ib_dev *dev = to_mdev(ibdev);
535 struct mlx5_core_dev *mdev = dev->mdev;
536 struct ib_smp *in_mad = NULL;
537 struct ib_smp *out_mad = NULL;
538 int ext_active_speed;
539 int err = -ENOMEM;
540
541 if (port < 1 || port > dev->num_ports) {
542 mlx5_ib_warn(dev, "invalid port number %d\n", port);
543 return -EINVAL;
544 }
545
546 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
547 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
548 if (!in_mad || !out_mad)
549 goto out;
550
551 /* props being zeroed by the caller, avoid zeroing it here */
552
553 init_query_mad(in_mad);
554 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
555 in_mad->attr_mod = cpu_to_be32(port);
556
557 err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad);
558 if (err) {
559 mlx5_ib_warn(dev, "err %d\n", err);
560 goto out;
561 }
562
563 props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16));
564 props->lmc = out_mad->data[34] & 0x7;
565 props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18));
566 props->sm_sl = out_mad->data[36] & 0xf;
567 props->state = out_mad->data[32] & 0xf;
568 props->phys_state = out_mad->data[33] >> 4;
569 props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20));
570 props->gid_tbl_len = out_mad->data[50];
571 props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg);
572 props->pkey_tbl_len = mdev->port_caps[port - 1].pkey_table_len;
573 props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46));
574 props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48));
575 props->active_width = out_mad->data[31] & 0xf;
576 props->active_speed = out_mad->data[35] >> 4;
577 props->max_mtu = out_mad->data[41] & 0xf;
578 props->active_mtu = out_mad->data[36] >> 4;
579 props->subnet_timeout = out_mad->data[51] & 0x1f;
580 props->max_vl_num = out_mad->data[37] >> 4;
581 props->init_type_reply = out_mad->data[41] >> 4;
582
583 /* Check if extended speeds (EDR/FDR/...) are supported */
584 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
585 ext_active_speed = out_mad->data[62] >> 4;
586
587 switch (ext_active_speed) {
588 case 1:
589 props->active_speed = 16; /* FDR */
590 break;
591 case 2:
592 props->active_speed = 32; /* EDR */
593 break;
594 }
595 }
596
597 /* If reported active speed is QDR, check if is FDR-10 */
598 if (props->active_speed == 4) {
599 if (mdev->port_caps[port - 1].ext_port_cap &
600 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
601 init_query_mad(in_mad);
602 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
603 in_mad->attr_mod = cpu_to_be32(port);
604
605 err = mlx5_MAD_IFC(dev, 1, 1, port,
606 NULL, NULL, in_mad, out_mad);
607 if (err)
608 goto out;
609
610 /* Checking LinkSpeedActive for FDR-10 */
611 if (out_mad->data[15] & 0x1)
612 props->active_speed = 8;
613 }
614 }
615
616 out:
617 kfree(in_mad);
618 kfree(out_mad);
619
620 return err;
621 }
622