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, 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 void pma_cnt_ext_assign_ppcnt(struct ib_pma_portcounters_ext *cnt_ext, 151 void *out) 152 { 153 void *out_pma = MLX5_ADDR_OF(ppcnt_reg, out, 154 counter_set); 155 156 #define MLX5_GET_EXT_CNTR(counter_name) \ 157 MLX5_GET64(ib_ext_port_cntrs_grp_data_layout, \ 158 out_pma, counter_name##_high) 159 160 cnt_ext->port_xmit_data = 161 cpu_to_be64(MLX5_GET_EXT_CNTR(port_xmit_data) >> 2); 162 cnt_ext->port_rcv_data = 163 cpu_to_be64(MLX5_GET_EXT_CNTR(port_rcv_data) >> 2); 164 165 cnt_ext->port_xmit_packets = 166 cpu_to_be64(MLX5_GET_EXT_CNTR(port_xmit_pkts)); 167 cnt_ext->port_rcv_packets = 168 cpu_to_be64(MLX5_GET_EXT_CNTR(port_rcv_pkts)); 169 170 cnt_ext->port_unicast_xmit_packets = 171 cpu_to_be64(MLX5_GET_EXT_CNTR(port_unicast_xmit_pkts)); 172 cnt_ext->port_unicast_rcv_packets = 173 cpu_to_be64(MLX5_GET_EXT_CNTR(port_unicast_rcv_pkts)); 174 175 cnt_ext->port_multicast_xmit_packets = 176 cpu_to_be64(MLX5_GET_EXT_CNTR(port_multicast_xmit_pkts)); 177 cnt_ext->port_multicast_rcv_packets = 178 cpu_to_be64(MLX5_GET_EXT_CNTR(port_multicast_rcv_pkts)); 179 } 180 181 static int query_ib_ppcnt(struct mlx5_core_dev *dev, u8 port_num, u8 plane_num, 182 void *out, size_t sz, bool ext) 183 { 184 u32 *in; 185 int err; 186 187 in = kvzalloc(sz, GFP_KERNEL); 188 if (!in) { 189 err = -ENOMEM; 190 return err; 191 } 192 193 MLX5_SET(ppcnt_reg, in, local_port, port_num); 194 MLX5_SET(ppcnt_reg, in, plane_ind, plane_num); 195 196 if (ext) 197 MLX5_SET(ppcnt_reg, in, grp, 198 MLX5_INFINIBAND_EXTENDED_PORT_COUNTERS_GROUP); 199 else 200 MLX5_SET(ppcnt_reg, in, grp, 201 MLX5_INFINIBAND_PORT_COUNTERS_GROUP); 202 err = mlx5_core_access_reg(dev, in, sz, out, 203 sz, MLX5_REG_PPCNT, 0, 0); 204 205 kvfree(in); 206 return err; 207 } 208 209 static int process_pma_cmd(struct mlx5_ib_dev *dev, u32 port_num, 210 const struct ib_mad *in_mad, struct ib_mad *out_mad) 211 { 212 struct mlx5_core_dev *mdev; 213 bool native_port = true; 214 u32 mdev_port_num; 215 void *out_cnt; 216 int err; 217 218 mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num); 219 if (!mdev) { 220 /* Fail to get the native port, likely due to 2nd port is still 221 * unaffiliated. In such case default to 1st port and attached 222 * PF device. 223 */ 224 native_port = false; 225 mdev = dev->mdev; 226 mdev_port_num = 1; 227 } 228 if (MLX5_CAP_GEN(dev->mdev, num_ports) == 1 && 229 !mlx5_core_mp_enabled(mdev) && 230 dev->ib_dev.type != RDMA_DEVICE_TYPE_SMI) { 231 /* set local port to one for Function-Per-Port HCA. */ 232 mdev = dev->mdev; 233 mdev_port_num = 1; 234 } 235 236 /* Declaring support of extended counters */ 237 if (in_mad->mad_hdr.attr_id == IB_PMA_CLASS_PORT_INFO) { 238 struct ib_class_port_info cpi = {}; 239 240 cpi.capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH; 241 memcpy((out_mad->data + 40), &cpi, sizeof(cpi)); 242 err = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; 243 goto done; 244 } 245 246 if (in_mad->mad_hdr.attr_id == IB_PMA_PORT_COUNTERS_EXT) { 247 struct ib_pma_portcounters_ext *pma_cnt_ext = 248 (struct ib_pma_portcounters_ext *)(out_mad->data + 40); 249 int sz = max(MLX5_ST_SZ_BYTES(query_vport_counter_out), 250 MLX5_ST_SZ_BYTES(ppcnt_reg)); 251 252 out_cnt = kvzalloc(sz, GFP_KERNEL); 253 if (!out_cnt) { 254 err = IB_MAD_RESULT_FAILURE; 255 goto done; 256 } 257 258 if (dev->ib_dev.type == RDMA_DEVICE_TYPE_SMI) { 259 err = query_ib_ppcnt(mdev, mdev_port_num, 260 port_num, out_cnt, sz, 1); 261 if (!err) 262 pma_cnt_ext_assign_ppcnt(pma_cnt_ext, out_cnt); 263 } else { 264 err = mlx5_core_query_vport_counter(mdev, 0, 0, 265 mdev_port_num, 266 out_cnt); 267 if (!err) 268 pma_cnt_ext_assign(pma_cnt_ext, out_cnt); 269 } 270 } else { 271 struct ib_pma_portcounters *pma_cnt = 272 (struct ib_pma_portcounters *)(out_mad->data + 40); 273 int sz = MLX5_ST_SZ_BYTES(ppcnt_reg); 274 275 out_cnt = kvzalloc(sz, GFP_KERNEL); 276 if (!out_cnt) { 277 err = IB_MAD_RESULT_FAILURE; 278 goto done; 279 } 280 281 if (dev->ib_dev.type == RDMA_DEVICE_TYPE_SMI) 282 err = query_ib_ppcnt(mdev, mdev_port_num, port_num, 283 out_cnt, sz, 0); 284 else 285 err = query_ib_ppcnt(mdev, mdev_port_num, 0, 286 out_cnt, sz, 0); 287 288 if (!err) 289 pma_cnt_assign(pma_cnt, out_cnt); 290 } 291 kvfree(out_cnt); 292 err = err ? IB_MAD_RESULT_FAILURE : 293 IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; 294 done: 295 if (native_port) 296 mlx5_ib_put_native_port_mdev(dev, port_num); 297 return err; 298 } 299 300 int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u32 port_num, 301 const struct ib_wc *in_wc, const struct ib_grh *in_grh, 302 const struct ib_mad *in, struct ib_mad *out, 303 size_t *out_mad_size, u16 *out_mad_pkey_index) 304 { 305 struct mlx5_ib_dev *dev = to_mdev(ibdev); 306 u8 mgmt_class = in->mad_hdr.mgmt_class; 307 u8 method = in->mad_hdr.method; 308 u16 slid; 309 int err; 310 311 slid = in_wc ? ib_lid_cpu16(in_wc->slid) : 312 be16_to_cpu(IB_LID_PERMISSIVE); 313 314 if (method == IB_MGMT_METHOD_TRAP && !slid) 315 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 316 317 switch (mgmt_class) { 318 case IB_MGMT_CLASS_SUBN_LID_ROUTED: 319 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: { 320 if (method != IB_MGMT_METHOD_GET && 321 method != IB_MGMT_METHOD_SET && 322 method != IB_MGMT_METHOD_TRAP_REPRESS) 323 return IB_MAD_RESULT_SUCCESS; 324 325 /* Don't process SMInfo queries -- the SMA can't handle them. 326 */ 327 if (in->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO) 328 return IB_MAD_RESULT_SUCCESS; 329 } break; 330 case IB_MGMT_CLASS_PERF_MGMT: 331 if (MLX5_CAP_GEN(dev->mdev, vport_counters) && 332 method == IB_MGMT_METHOD_GET) 333 return process_pma_cmd(dev, port_num, in, out); 334 fallthrough; 335 case MLX5_IB_VENDOR_CLASS1: 336 case MLX5_IB_VENDOR_CLASS2: 337 case IB_MGMT_CLASS_CONG_MGMT: { 338 if (method != IB_MGMT_METHOD_GET && 339 method != IB_MGMT_METHOD_SET) 340 return IB_MAD_RESULT_SUCCESS; 341 } break; 342 default: 343 return IB_MAD_RESULT_SUCCESS; 344 } 345 346 err = mlx5_MAD_IFC(to_mdev(ibdev), mad_flags & IB_MAD_IGNORE_MKEY, 347 mad_flags & IB_MAD_IGNORE_BKEY, port_num, in_wc, 348 in_grh, in, out); 349 if (err) 350 return IB_MAD_RESULT_FAILURE; 351 352 /* set return bit in status of directed route responses */ 353 if (mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) 354 out->mad_hdr.status |= cpu_to_be16(1 << 15); 355 356 if (method == IB_MGMT_METHOD_TRAP_REPRESS) 357 /* no response for trap repress */ 358 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 359 360 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; 361 } 362 363 int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, unsigned int port) 364 { 365 struct ib_smp *in_mad; 366 struct ib_smp *out_mad; 367 int err = -ENOMEM; 368 u16 packet_error; 369 370 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 371 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 372 if (!in_mad || !out_mad) 373 goto out; 374 375 ib_init_query_mad(in_mad); 376 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO; 377 in_mad->attr_mod = cpu_to_be32(port); 378 379 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 380 381 packet_error = be16_to_cpu(out_mad->status); 382 383 dev->port_caps[port - 1].ext_port_cap = (!err && !packet_error) ? 384 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0; 385 386 out: 387 kfree(in_mad); 388 kfree(out_mad); 389 return err; 390 } 391 392 static int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev, 393 struct ib_smp *out_mad) 394 { 395 struct ib_smp *in_mad; 396 int err; 397 398 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 399 if (!in_mad) 400 return -ENOMEM; 401 402 ib_init_query_mad(in_mad); 403 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 404 405 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, 406 out_mad); 407 408 kfree(in_mad); 409 return err; 410 } 411 412 int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev, 413 __be64 *sys_image_guid) 414 { 415 struct ib_smp *out_mad; 416 int err; 417 418 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 419 if (!out_mad) 420 return -ENOMEM; 421 422 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad); 423 if (err) 424 goto out; 425 426 memcpy(sys_image_guid, out_mad->data + 4, 8); 427 428 out: 429 kfree(out_mad); 430 431 return err; 432 } 433 434 int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev, 435 u16 *max_pkeys) 436 { 437 struct ib_smp *out_mad; 438 int err; 439 440 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 441 if (!out_mad) 442 return -ENOMEM; 443 444 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad); 445 if (err) 446 goto out; 447 448 *max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28)); 449 450 out: 451 kfree(out_mad); 452 453 return err; 454 } 455 456 int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev, 457 u32 *vendor_id) 458 { 459 struct ib_smp *out_mad; 460 int err; 461 462 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 463 if (!out_mad) 464 return -ENOMEM; 465 466 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad); 467 if (err) 468 goto out; 469 470 *vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) & 0xffff; 471 472 out: 473 kfree(out_mad); 474 475 return err; 476 } 477 478 int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc) 479 { 480 struct ib_smp *in_mad; 481 struct ib_smp *out_mad; 482 int err = -ENOMEM; 483 484 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 485 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 486 if (!in_mad || !out_mad) 487 goto out; 488 489 ib_init_query_mad(in_mad); 490 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 491 492 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 493 if (err) 494 goto out; 495 496 memcpy(node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX); 497 out: 498 kfree(in_mad); 499 kfree(out_mad); 500 return err; 501 } 502 503 int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid) 504 { 505 struct ib_smp *in_mad; 506 struct ib_smp *out_mad; 507 int err = -ENOMEM; 508 509 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 510 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 511 if (!in_mad || !out_mad) 512 goto out; 513 514 ib_init_query_mad(in_mad); 515 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 516 517 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 518 if (err) 519 goto out; 520 521 memcpy(node_guid, out_mad->data + 12, 8); 522 out: 523 kfree(in_mad); 524 kfree(out_mad); 525 return err; 526 } 527 528 int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u32 port, u16 index, 529 u16 *pkey) 530 { 531 struct ib_smp *in_mad; 532 struct ib_smp *out_mad; 533 int err = -ENOMEM; 534 535 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 536 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 537 if (!in_mad || !out_mad) 538 goto out; 539 540 ib_init_query_mad(in_mad); 541 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 542 in_mad->attr_mod = cpu_to_be32(index / 32); 543 544 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, 545 out_mad); 546 if (err) 547 goto out; 548 549 *pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]); 550 551 out: 552 kfree(in_mad); 553 kfree(out_mad); 554 return err; 555 } 556 557 int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u32 port, int index, 558 union ib_gid *gid) 559 { 560 struct ib_smp *in_mad; 561 struct ib_smp *out_mad; 562 int err = -ENOMEM; 563 564 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 565 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 566 if (!in_mad || !out_mad) 567 goto out; 568 569 ib_init_query_mad(in_mad); 570 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 571 in_mad->attr_mod = cpu_to_be32(port); 572 573 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, 574 out_mad); 575 if (err) 576 goto out; 577 578 memcpy(gid->raw, out_mad->data + 8, 8); 579 580 ib_init_query_mad(in_mad); 581 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 582 in_mad->attr_mod = cpu_to_be32(index / 8); 583 584 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, 585 out_mad); 586 if (err) 587 goto out; 588 589 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 590 591 out: 592 kfree(in_mad); 593 kfree(out_mad); 594 return err; 595 } 596 597 int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u32 port, 598 struct ib_port_attr *props) 599 { 600 struct mlx5_ib_dev *dev = to_mdev(ibdev); 601 struct mlx5_core_dev *mdev = dev->mdev; 602 struct ib_smp *in_mad; 603 struct ib_smp *out_mad; 604 int ext_active_speed; 605 int err = -ENOMEM; 606 607 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 608 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 609 if (!in_mad || !out_mad) 610 goto out; 611 612 /* props being zeroed by the caller, avoid zeroing it here */ 613 614 ib_init_query_mad(in_mad); 615 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 616 in_mad->attr_mod = cpu_to_be32(port); 617 618 err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad); 619 if (err) { 620 mlx5_ib_warn(dev, "err %d\n", err); 621 goto out; 622 } 623 624 props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16)); 625 props->lmc = out_mad->data[34] & 0x7; 626 props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18)); 627 props->sm_sl = out_mad->data[36] & 0xf; 628 props->state = out_mad->data[32] & 0xf; 629 props->phys_state = out_mad->data[33] >> 4; 630 props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20)); 631 props->gid_tbl_len = out_mad->data[50]; 632 props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg); 633 props->pkey_tbl_len = dev->pkey_table_len; 634 props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46)); 635 props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48)); 636 props->active_width = out_mad->data[31] & 0xf; 637 props->active_speed = out_mad->data[35] >> 4; 638 props->max_mtu = out_mad->data[41] & 0xf; 639 props->active_mtu = out_mad->data[36] >> 4; 640 props->subnet_timeout = out_mad->data[51] & 0x1f; 641 props->max_vl_num = out_mad->data[37] >> 4; 642 props->init_type_reply = out_mad->data[41] >> 4; 643 644 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP) { 645 props->port_cap_flags2 = 646 be16_to_cpup((__be16 *)(out_mad->data + 60)); 647 648 if (props->port_cap_flags2 & IB_PORT_LINK_WIDTH_2X_SUP) 649 props->active_width = out_mad->data[31] & 0x1f; 650 } 651 652 /* Check if extended speeds (EDR/FDR/...) are supported */ 653 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 654 ext_active_speed = out_mad->data[62] >> 4; 655 656 switch (ext_active_speed) { 657 case 1: 658 props->active_speed = 16; /* FDR */ 659 break; 660 case 2: 661 props->active_speed = 32; /* EDR */ 662 break; 663 case 4: 664 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP && 665 props->port_cap_flags2 & IB_PORT_LINK_SPEED_HDR_SUP) 666 props->active_speed = IB_SPEED_HDR; 667 break; 668 case 8: 669 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP && 670 props->port_cap_flags2 & IB_PORT_LINK_SPEED_NDR_SUP) 671 props->active_speed = IB_SPEED_NDR; 672 break; 673 } 674 } 675 676 /* Check if extended speeds 2 (XDR/...) are supported */ 677 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP && 678 props->port_cap_flags2 & IB_PORT_EXTENDED_SPEEDS2_SUP) { 679 ext_active_speed = (out_mad->data[56] >> 4) & 0x6; 680 681 switch (ext_active_speed) { 682 case 2: 683 if (props->port_cap_flags2 & IB_PORT_LINK_SPEED_XDR_SUP) 684 props->active_speed = IB_SPEED_XDR; 685 break; 686 } 687 } 688 689 /* If reported active speed is QDR, check if is FDR-10 */ 690 if (props->active_speed == 4) { 691 if (dev->port_caps[port - 1].ext_port_cap & 692 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) { 693 ib_init_query_mad(in_mad); 694 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO; 695 in_mad->attr_mod = cpu_to_be32(port); 696 697 err = mlx5_MAD_IFC(dev, 1, 1, port, 698 NULL, NULL, in_mad, out_mad); 699 if (err) 700 goto out; 701 702 /* Checking LinkSpeedActive for FDR-10 */ 703 if (out_mad->data[15] & 0x1) 704 props->active_speed = 8; 705 } 706 } 707 708 out: 709 kfree(in_mad); 710 kfree(out_mad); 711 712 return err; 713 } 714