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 
query_ib_ppcnt(struct mlx5_core_dev * dev,u8 port_num,void * out,size_t sz)150 static int query_ib_ppcnt(struct mlx5_core_dev *dev, u8 port_num, void *out,
151 			  size_t sz)
152 {
153 	u32 *in;
154 	int err;
155 
156 	in  = kvzalloc(sz, GFP_KERNEL);
157 	if (!in) {
158 		err = -ENOMEM;
159 		return err;
160 	}
161 
162 	MLX5_SET(ppcnt_reg, in, local_port, port_num);
163 
164 	MLX5_SET(ppcnt_reg, in, grp, MLX5_INFINIBAND_PORT_COUNTERS_GROUP);
165 	err = mlx5_core_access_reg(dev, in, sz, out,
166 				   sz, MLX5_REG_PPCNT, 0, 0);
167 
168 	kvfree(in);
169 	return err;
170 }
171 
process_pma_cmd(struct mlx5_ib_dev * dev,u32 port_num,const struct ib_mad * in_mad,struct ib_mad * out_mad)172 static int process_pma_cmd(struct mlx5_ib_dev *dev, u32 port_num,
173 			   const struct ib_mad *in_mad, struct ib_mad *out_mad)
174 {
175 	struct mlx5_core_dev *mdev;
176 	bool native_port = true;
177 	u32 mdev_port_num;
178 	void *out_cnt;
179 	int err;
180 
181 	mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
182 	if (!mdev) {
183 		/* Fail to get the native port, likely due to 2nd port is still
184 		 * unaffiliated. In such case default to 1st port and attached
185 		 * PF device.
186 		 */
187 		native_port = false;
188 		mdev = dev->mdev;
189 		mdev_port_num = 1;
190 	}
191 	if (MLX5_CAP_GEN(dev->mdev, num_ports) == 1) {
192 		/* set local port to one for Function-Per-Port HCA. */
193 		mdev = dev->mdev;
194 		mdev_port_num = 1;
195 	}
196 
197 	/* Declaring support of extended counters */
198 	if (in_mad->mad_hdr.attr_id == IB_PMA_CLASS_PORT_INFO) {
199 		struct ib_class_port_info cpi = {};
200 
201 		cpi.capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
202 		memcpy((out_mad->data + 40), &cpi, sizeof(cpi));
203 		err = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
204 		goto done;
205 	}
206 
207 	if (in_mad->mad_hdr.attr_id == IB_PMA_PORT_COUNTERS_EXT) {
208 		struct ib_pma_portcounters_ext *pma_cnt_ext =
209 			(struct ib_pma_portcounters_ext *)(out_mad->data + 40);
210 		int sz = MLX5_ST_SZ_BYTES(query_vport_counter_out);
211 
212 		out_cnt = kvzalloc(sz, GFP_KERNEL);
213 		if (!out_cnt) {
214 			err = IB_MAD_RESULT_FAILURE;
215 			goto done;
216 		}
217 
218 		err = mlx5_core_query_vport_counter(mdev, 0, 0, mdev_port_num,
219 						    out_cnt);
220 		if (!err)
221 			pma_cnt_ext_assign(pma_cnt_ext, out_cnt);
222 	} else {
223 		struct ib_pma_portcounters *pma_cnt =
224 			(struct ib_pma_portcounters *)(out_mad->data + 40);
225 		int sz = MLX5_ST_SZ_BYTES(ppcnt_reg);
226 
227 		out_cnt = kvzalloc(sz, GFP_KERNEL);
228 		if (!out_cnt) {
229 			err = IB_MAD_RESULT_FAILURE;
230 			goto done;
231 		}
232 
233 		err = query_ib_ppcnt(mdev, mdev_port_num, out_cnt, sz);
234 		if (!err)
235 			pma_cnt_assign(pma_cnt, out_cnt);
236 	}
237 	kvfree(out_cnt);
238 	err = err ? IB_MAD_RESULT_FAILURE :
239 		    IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
240 done:
241 	if (native_port)
242 		mlx5_ib_put_native_port_mdev(dev, port_num);
243 	return err;
244 }
245 
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)246 int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u32 port_num,
247 			const struct ib_wc *in_wc, const struct ib_grh *in_grh,
248 			const struct ib_mad *in, struct ib_mad *out,
249 			size_t *out_mad_size, u16 *out_mad_pkey_index)
250 {
251 	struct mlx5_ib_dev *dev = to_mdev(ibdev);
252 	u8 mgmt_class = in->mad_hdr.mgmt_class;
253 	u8 method = in->mad_hdr.method;
254 	u16 slid;
255 	int err;
256 
257 	slid = in_wc ? ib_lid_cpu16(in_wc->slid) :
258 		       be16_to_cpu(IB_LID_PERMISSIVE);
259 
260 	if (method == IB_MGMT_METHOD_TRAP && !slid)
261 		return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
262 
263 	switch (mgmt_class) {
264 	case IB_MGMT_CLASS_SUBN_LID_ROUTED:
265 	case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: {
266 		if (method != IB_MGMT_METHOD_GET &&
267 		    method != IB_MGMT_METHOD_SET &&
268 		    method != IB_MGMT_METHOD_TRAP_REPRESS)
269 			return IB_MAD_RESULT_SUCCESS;
270 
271 		/* Don't process SMInfo queries -- the SMA can't handle them.
272 		 */
273 		if (in->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO)
274 			return IB_MAD_RESULT_SUCCESS;
275 	} break;
276 	case IB_MGMT_CLASS_PERF_MGMT:
277 		if (MLX5_CAP_GEN(dev->mdev, vport_counters) &&
278 		    method == IB_MGMT_METHOD_GET)
279 			return process_pma_cmd(dev, port_num, in, out);
280 		fallthrough;
281 	case MLX5_IB_VENDOR_CLASS1:
282 	case MLX5_IB_VENDOR_CLASS2:
283 	case IB_MGMT_CLASS_CONG_MGMT: {
284 		if (method != IB_MGMT_METHOD_GET &&
285 		    method != IB_MGMT_METHOD_SET)
286 			return IB_MAD_RESULT_SUCCESS;
287 	} break;
288 	default:
289 		return IB_MAD_RESULT_SUCCESS;
290 	}
291 
292 	err = mlx5_MAD_IFC(to_mdev(ibdev), mad_flags & IB_MAD_IGNORE_MKEY,
293 			   mad_flags & IB_MAD_IGNORE_BKEY, port_num, in_wc,
294 			   in_grh, in, out);
295 	if (err)
296 		return IB_MAD_RESULT_FAILURE;
297 
298 	/* set return bit in status of directed route responses */
299 	if (mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
300 		out->mad_hdr.status |= cpu_to_be16(1 << 15);
301 
302 	if (method == IB_MGMT_METHOD_TRAP_REPRESS)
303 		/* no response for trap repress */
304 		return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
305 
306 	return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
307 }
308 
mlx5_query_ext_port_caps(struct mlx5_ib_dev * dev,unsigned int port)309 int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, unsigned int port)
310 {
311 	struct ib_smp *in_mad  = NULL;
312 	struct ib_smp *out_mad = NULL;
313 	int err = -ENOMEM;
314 	u16 packet_error;
315 
316 	in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
317 	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
318 	if (!in_mad || !out_mad)
319 		goto out;
320 
321 	ib_init_query_mad(in_mad);
322 	in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
323 	in_mad->attr_mod = cpu_to_be32(port);
324 
325 	err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
326 
327 	packet_error = be16_to_cpu(out_mad->status);
328 
329 	dev->port_caps[port - 1].ext_port_cap = (!err && !packet_error) ?
330 		MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0;
331 
332 out:
333 	kfree(in_mad);
334 	kfree(out_mad);
335 	return err;
336 }
337 
mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device * ibdev,struct ib_smp * out_mad)338 static int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev,
339 						 struct ib_smp *out_mad)
340 {
341 	struct ib_smp *in_mad = NULL;
342 	int err = -ENOMEM;
343 
344 	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
345 	if (!in_mad)
346 		return -ENOMEM;
347 
348 	ib_init_query_mad(in_mad);
349 	in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
350 
351 	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad,
352 			   out_mad);
353 
354 	kfree(in_mad);
355 	return err;
356 }
357 
mlx5_query_mad_ifc_system_image_guid(struct ib_device * ibdev,__be64 * sys_image_guid)358 int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev,
359 					 __be64 *sys_image_guid)
360 {
361 	struct ib_smp *out_mad = NULL;
362 	int err = -ENOMEM;
363 
364 	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
365 	if (!out_mad)
366 		return -ENOMEM;
367 
368 	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
369 	if (err)
370 		goto out;
371 
372 	memcpy(sys_image_guid, out_mad->data + 4, 8);
373 
374 out:
375 	kfree(out_mad);
376 
377 	return err;
378 }
379 
mlx5_query_mad_ifc_max_pkeys(struct ib_device * ibdev,u16 * max_pkeys)380 int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev,
381 				 u16 *max_pkeys)
382 {
383 	struct ib_smp *out_mad = NULL;
384 	int err = -ENOMEM;
385 
386 	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
387 	if (!out_mad)
388 		return -ENOMEM;
389 
390 	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
391 	if (err)
392 		goto out;
393 
394 	*max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28));
395 
396 out:
397 	kfree(out_mad);
398 
399 	return err;
400 }
401 
mlx5_query_mad_ifc_vendor_id(struct ib_device * ibdev,u32 * vendor_id)402 int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev,
403 				 u32 *vendor_id)
404 {
405 	struct ib_smp *out_mad = NULL;
406 	int err = -ENOMEM;
407 
408 	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
409 	if (!out_mad)
410 		return -ENOMEM;
411 
412 	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
413 	if (err)
414 		goto out;
415 
416 	*vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) & 0xffff;
417 
418 out:
419 	kfree(out_mad);
420 
421 	return err;
422 }
423 
mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev * dev,char * node_desc)424 int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc)
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 	ib_init_query_mad(in_mad);
436 	in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
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_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
443 out:
444 	kfree(in_mad);
445 	kfree(out_mad);
446 	return err;
447 }
448 
mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev * dev,__be64 * node_guid)449 int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid)
450 {
451 	struct ib_smp *in_mad  = NULL;
452 	struct ib_smp *out_mad = NULL;
453 	int err = -ENOMEM;
454 
455 	in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
456 	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
457 	if (!in_mad || !out_mad)
458 		goto out;
459 
460 	ib_init_query_mad(in_mad);
461 	in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
462 
463 	err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
464 	if (err)
465 		goto out;
466 
467 	memcpy(node_guid, out_mad->data + 12, 8);
468 out:
469 	kfree(in_mad);
470 	kfree(out_mad);
471 	return err;
472 }
473 
mlx5_query_mad_ifc_pkey(struct ib_device * ibdev,u32 port,u16 index,u16 * pkey)474 int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u32 port, u16 index,
475 			    u16 *pkey)
476 {
477 	struct ib_smp *in_mad  = NULL;
478 	struct ib_smp *out_mad = NULL;
479 	int err = -ENOMEM;
480 
481 	in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
482 	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
483 	if (!in_mad || !out_mad)
484 		goto out;
485 
486 	ib_init_query_mad(in_mad);
487 	in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
488 	in_mad->attr_mod = cpu_to_be32(index / 32);
489 
490 	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
491 			   out_mad);
492 	if (err)
493 		goto out;
494 
495 	*pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]);
496 
497 out:
498 	kfree(in_mad);
499 	kfree(out_mad);
500 	return err;
501 }
502 
mlx5_query_mad_ifc_gids(struct ib_device * ibdev,u32 port,int index,union ib_gid * gid)503 int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u32 port, int index,
504 			    union ib_gid *gid)
505 {
506 	struct ib_smp *in_mad  = NULL;
507 	struct ib_smp *out_mad = NULL;
508 	int err = -ENOMEM;
509 
510 	in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
511 	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
512 	if (!in_mad || !out_mad)
513 		goto out;
514 
515 	ib_init_query_mad(in_mad);
516 	in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
517 	in_mad->attr_mod = cpu_to_be32(port);
518 
519 	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
520 			   out_mad);
521 	if (err)
522 		goto out;
523 
524 	memcpy(gid->raw, out_mad->data + 8, 8);
525 
526 	ib_init_query_mad(in_mad);
527 	in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
528 	in_mad->attr_mod = cpu_to_be32(index / 8);
529 
530 	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
531 			   out_mad);
532 	if (err)
533 		goto out;
534 
535 	memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
536 
537 out:
538 	kfree(in_mad);
539 	kfree(out_mad);
540 	return err;
541 }
542 
mlx5_query_mad_ifc_port(struct ib_device * ibdev,u32 port,struct ib_port_attr * props)543 int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u32 port,
544 			    struct ib_port_attr *props)
545 {
546 	struct mlx5_ib_dev *dev = to_mdev(ibdev);
547 	struct mlx5_core_dev *mdev = dev->mdev;
548 	struct ib_smp *in_mad  = NULL;
549 	struct ib_smp *out_mad = NULL;
550 	int ext_active_speed;
551 	int err = -ENOMEM;
552 
553 	in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
554 	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
555 	if (!in_mad || !out_mad)
556 		goto out;
557 
558 	/* props being zeroed by the caller, avoid zeroing it here */
559 
560 	ib_init_query_mad(in_mad);
561 	in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
562 	in_mad->attr_mod = cpu_to_be32(port);
563 
564 	err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad);
565 	if (err) {
566 		mlx5_ib_warn(dev, "err %d\n", err);
567 		goto out;
568 	}
569 
570 	props->lid		= be16_to_cpup((__be16 *)(out_mad->data + 16));
571 	props->lmc		= out_mad->data[34] & 0x7;
572 	props->sm_lid		= be16_to_cpup((__be16 *)(out_mad->data + 18));
573 	props->sm_sl		= out_mad->data[36] & 0xf;
574 	props->state		= out_mad->data[32] & 0xf;
575 	props->phys_state	= out_mad->data[33] >> 4;
576 	props->port_cap_flags	= be32_to_cpup((__be32 *)(out_mad->data + 20));
577 	props->gid_tbl_len	= out_mad->data[50];
578 	props->max_msg_sz	= 1 << MLX5_CAP_GEN(mdev, log_max_msg);
579 	props->pkey_tbl_len	= dev->pkey_table_len;
580 	props->bad_pkey_cntr	= be16_to_cpup((__be16 *)(out_mad->data + 46));
581 	props->qkey_viol_cntr	= be16_to_cpup((__be16 *)(out_mad->data + 48));
582 	props->active_width	= out_mad->data[31] & 0xf;
583 	props->active_speed	= out_mad->data[35] >> 4;
584 	props->max_mtu		= out_mad->data[41] & 0xf;
585 	props->active_mtu	= out_mad->data[36] >> 4;
586 	props->subnet_timeout	= out_mad->data[51] & 0x1f;
587 	props->max_vl_num	= out_mad->data[37] >> 4;
588 	props->init_type_reply	= out_mad->data[41] >> 4;
589 
590 	if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP) {
591 		props->port_cap_flags2 =
592 			be16_to_cpup((__be16 *)(out_mad->data + 60));
593 
594 		if (props->port_cap_flags2 & IB_PORT_LINK_WIDTH_2X_SUP)
595 			props->active_width = out_mad->data[31] & 0x1f;
596 	}
597 
598 	/* Check if extended speeds (EDR/FDR/...) are supported */
599 	if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
600 		ext_active_speed = out_mad->data[62] >> 4;
601 
602 		switch (ext_active_speed) {
603 		case 1:
604 			props->active_speed = 16; /* FDR */
605 			break;
606 		case 2:
607 			props->active_speed = 32; /* EDR */
608 			break;
609 		case 4:
610 			if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP &&
611 			    props->port_cap_flags2 & IB_PORT_LINK_SPEED_HDR_SUP)
612 				props->active_speed = IB_SPEED_HDR;
613 			break;
614 		case 8:
615 			if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP &&
616 			    props->port_cap_flags2 & IB_PORT_LINK_SPEED_NDR_SUP)
617 				props->active_speed = IB_SPEED_NDR;
618 			break;
619 		}
620 	}
621 
622 	/* If reported active speed is QDR, check if is FDR-10 */
623 	if (props->active_speed == 4) {
624 		if (dev->port_caps[port - 1].ext_port_cap &
625 		    MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
626 			ib_init_query_mad(in_mad);
627 			in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
628 			in_mad->attr_mod = cpu_to_be32(port);
629 
630 			err = mlx5_MAD_IFC(dev, 1, 1, port,
631 					   NULL, NULL, in_mad, out_mad);
632 			if (err)
633 				goto out;
634 
635 			/* Checking LinkSpeedActive for FDR-10 */
636 			if (out_mad->data[15] & 0x1)
637 				props->active_speed = 8;
638 		}
639 	}
640 
641 out:
642 	kfree(in_mad);
643 	kfree(out_mad);
644 
645 	return err;
646 }
647