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 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 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 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 } 108 109 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 } 149 150 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 } 171 172 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 } 245 246 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 } 308 309 int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, unsigned int port) 310 { 311 struct ib_smp *in_mad; 312 struct ib_smp *out_mad; 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 } 337 338 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; 342 int err; 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 } 357 358 int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev, 359 __be64 *sys_image_guid) 360 { 361 struct ib_smp *out_mad; 362 int err; 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 } 379 380 int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev, 381 u16 *max_pkeys) 382 { 383 struct ib_smp *out_mad; 384 int err; 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 } 401 402 int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev, 403 u32 *vendor_id) 404 { 405 struct ib_smp *out_mad; 406 int err; 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 } 423 424 int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc) 425 { 426 struct ib_smp *in_mad; 427 struct ib_smp *out_mad; 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 } 448 449 int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid) 450 { 451 struct ib_smp *in_mad; 452 struct ib_smp *out_mad; 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 } 473 474 int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u32 port, u16 index, 475 u16 *pkey) 476 { 477 struct ib_smp *in_mad; 478 struct ib_smp *out_mad; 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 } 502 503 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; 507 struct ib_smp *out_mad; 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 } 542 543 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; 549 struct ib_smp *out_mad; 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