Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/mlx5/mlx5_ib/mlx5_ib_mad.c
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1 /*- 2 * Copyright (c) 2013-2015, Mellanox Technologies, Ltd. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 * 25 * $FreeBSD$ 26 */ 27 28 #include "opt_rss.h" 29 #include "opt_ratelimit.h" 30 31 #include <dev/mlx5/vport.h> 32 #include <rdma/ib_mad.h> 33 #include <rdma/ib_smi.h> 34 #include <rdma/ib_pma.h> 35 #include <dev/mlx5/mlx5_ib/mlx5_ib.h> 36 37 enum { 38 MLX5_IB_VENDOR_CLASS1 = 0x9, 39 MLX5_IB_VENDOR_CLASS2 = 0xa 40 }; 41 42 int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey, 43 u8 port, const struct ib_wc *in_wc, const struct ib_grh *in_grh, 44 const void *in_mad, void *response_mad) 45 { 46 u8 op_modifier = 0; 47 48 /* Key check traps can't be generated unless we have in_wc to 49 * tell us where to send the trap. 50 */ 51 if (ignore_mkey || !in_wc) 52 op_modifier |= 0x1; 53 if (ignore_bkey || !in_wc) 54 op_modifier |= 0x2; 55 56 return mlx5_core_mad_ifc(dev->mdev, in_mad, response_mad, op_modifier, port); 57 } 58 59 static int process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, 60 const struct ib_wc *in_wc, const struct ib_grh *in_grh, 61 const struct ib_mad *in_mad, struct ib_mad *out_mad) 62 { 63 u16 slid; 64 int err; 65 66 slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE); 67 68 if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0) 69 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 70 71 if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED || 72 in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { 73 if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET && 74 in_mad->mad_hdr.method != IB_MGMT_METHOD_SET && 75 in_mad->mad_hdr.method != IB_MGMT_METHOD_TRAP_REPRESS) 76 return IB_MAD_RESULT_SUCCESS; 77 78 /* Don't process SMInfo queries -- the SMA can't handle them. 79 */ 80 if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO) 81 return IB_MAD_RESULT_SUCCESS; 82 } else if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT || 83 in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS1 || 84 in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS2 || 85 in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_CONG_MGMT) { 86 if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET && 87 in_mad->mad_hdr.method != IB_MGMT_METHOD_SET) 88 return IB_MAD_RESULT_SUCCESS; 89 } else { 90 return IB_MAD_RESULT_SUCCESS; 91 } 92 93 err = mlx5_MAD_IFC(to_mdev(ibdev), 94 mad_flags & IB_MAD_IGNORE_MKEY, 95 mad_flags & IB_MAD_IGNORE_BKEY, 96 port_num, in_wc, in_grh, in_mad, out_mad); 97 if (err) 98 return IB_MAD_RESULT_FAILURE; 99 100 /* set return bit in status of directed route responses */ 101 if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) 102 out_mad->mad_hdr.status |= cpu_to_be16(1 << 15); 103 104 if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS) 105 /* no response for trap repress */ 106 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 107 108 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; 109 } 110 111 static void pma_cnt_ext_assign(struct ib_pma_portcounters_ext *pma_cnt_ext, 112 void *out) 113 { 114 #define MLX5_SUM_CNT(p, cntr1, cntr2) \ 115 (MLX5_GET64(query_vport_counter_out, p, cntr1) + \ 116 MLX5_GET64(query_vport_counter_out, p, cntr2)) 117 118 pma_cnt_ext->port_xmit_data = 119 cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.octets, 120 transmitted_ib_multicast.octets) >> 2); 121 pma_cnt_ext->port_rcv_data = 122 cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.octets, 123 received_ib_multicast.octets) >> 2); 124 pma_cnt_ext->port_xmit_packets = 125 cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.packets, 126 transmitted_ib_multicast.packets)); 127 pma_cnt_ext->port_rcv_packets = 128 cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.packets, 129 received_ib_multicast.packets)); 130 pma_cnt_ext->port_unicast_xmit_packets = 131 MLX5_GET64_BE(query_vport_counter_out, 132 out, transmitted_ib_unicast.packets); 133 pma_cnt_ext->port_unicast_rcv_packets = 134 MLX5_GET64_BE(query_vport_counter_out, 135 out, received_ib_unicast.packets); 136 pma_cnt_ext->port_multicast_xmit_packets = 137 MLX5_GET64_BE(query_vport_counter_out, 138 out, transmitted_ib_multicast.packets); 139 pma_cnt_ext->port_multicast_rcv_packets = 140 MLX5_GET64_BE(query_vport_counter_out, 141 out, received_ib_multicast.packets); 142 } 143 144 static void pma_cnt_assign(struct ib_pma_portcounters *pma_cnt, 145 void *out) 146 { 147 /* Traffic counters will be reported in 148 * their 64bit form via ib_pma_portcounters_ext by default. 149 */ 150 void *out_pma = MLX5_ADDR_OF(ppcnt_reg, out, 151 counter_set); 152 153 #define MLX5_ASSIGN_PMA_CNTR(counter_var, counter_name) { \ 154 counter_var = MLX5_GET_BE(typeof(counter_var), \ 155 ib_port_cntrs_grp_data_layout, \ 156 out_pma, counter_name); \ 157 } 158 159 MLX5_ASSIGN_PMA_CNTR(pma_cnt->symbol_error_counter, 160 symbol_error_counter); 161 MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_error_recovery_counter, 162 link_error_recovery_counter); 163 MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_downed_counter, 164 link_downed_counter); 165 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_errors, 166 port_rcv_errors); 167 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_remphys_errors, 168 port_rcv_remote_physical_errors); 169 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_switch_relay_errors, 170 port_rcv_switch_relay_errors); 171 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_discards, 172 port_xmit_discards); 173 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_constraint_errors, 174 port_xmit_constraint_errors); 175 MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_constraint_errors, 176 port_rcv_constraint_errors); 177 MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_overrun_errors, 178 link_overrun_errors); 179 MLX5_ASSIGN_PMA_CNTR(pma_cnt->vl15_dropped, 180 vl_15_dropped); 181 } 182 183 static int process_pma_cmd(struct ib_device *ibdev, u8 port_num, 184 const struct ib_mad *in_mad, struct ib_mad *out_mad) 185 { 186 struct mlx5_ib_dev *dev = to_mdev(ibdev); 187 int err; 188 void *out_cnt; 189 190 /* Decalring support of extended counters */ 191 if (in_mad->mad_hdr.attr_id == IB_PMA_CLASS_PORT_INFO) { 192 struct ib_class_port_info cpi = {}; 193 194 cpi.capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH; 195 memcpy((out_mad->data + 40), &cpi, sizeof(cpi)); 196 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; 197 } 198 199 if (in_mad->mad_hdr.attr_id == IB_PMA_PORT_COUNTERS_EXT) { 200 struct ib_pma_portcounters_ext *pma_cnt_ext = 201 (struct ib_pma_portcounters_ext *)(out_mad->data + 40); 202 int sz = MLX5_ST_SZ_BYTES(query_vport_counter_out); 203 204 out_cnt = mlx5_vzalloc(sz); 205 if (!out_cnt) 206 return IB_MAD_RESULT_FAILURE; 207 208 err = mlx5_core_query_vport_counter(dev->mdev, 0, 0, 209 port_num, out_cnt, sz); 210 if (!err) 211 pma_cnt_ext_assign(pma_cnt_ext, out_cnt); 212 } else { 213 struct ib_pma_portcounters *pma_cnt = 214 (struct ib_pma_portcounters *)(out_mad->data + 40); 215 int sz = MLX5_ST_SZ_BYTES(ppcnt_reg); 216 217 out_cnt = mlx5_vzalloc(sz); 218 if (!out_cnt) 219 return IB_MAD_RESULT_FAILURE; 220 221 err = mlx5_core_query_ib_ppcnt(dev->mdev, port_num, 222 out_cnt, sz); 223 if (!err) 224 pma_cnt_assign(pma_cnt, out_cnt); 225 } 226 227 kvfree(out_cnt); 228 if (err) 229 return IB_MAD_RESULT_FAILURE; 230 231 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; 232 } 233 234 int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, 235 const struct ib_wc *in_wc, const struct ib_grh *in_grh, 236 const struct ib_mad_hdr *in, size_t in_mad_size, 237 struct ib_mad_hdr *out, size_t *out_mad_size, 238 u16 *out_mad_pkey_index) 239 { 240 struct mlx5_ib_dev *dev = to_mdev(ibdev); 241 struct mlx5_core_dev *mdev = dev->mdev; 242 const struct ib_mad *in_mad = (const struct ib_mad *)in; 243 struct ib_mad *out_mad = (struct ib_mad *)out; 244 245 if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) || 246 *out_mad_size != sizeof(*out_mad))) 247 return IB_MAD_RESULT_FAILURE; 248 249 memset(out_mad->data, 0, sizeof(out_mad->data)); 250 251 if (MLX5_CAP_GEN(mdev, vport_counters) && 252 in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT && 253 in_mad->mad_hdr.method == IB_MGMT_METHOD_GET) { 254 return process_pma_cmd(ibdev, port_num, in_mad, out_mad); 255 } else { 256 return process_mad(ibdev, mad_flags, port_num, in_wc, in_grh, 257 in_mad, out_mad); 258 } 259 } 260 261 int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port) 262 { 263 struct ib_smp *in_mad = NULL; 264 struct ib_smp *out_mad = NULL; 265 int err = -ENOMEM; 266 u16 packet_error; 267 268 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 269 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 270 if (!in_mad || !out_mad) 271 goto out; 272 273 init_query_mad(in_mad); 274 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO; 275 in_mad->attr_mod = cpu_to_be32(port); 276 277 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 278 279 packet_error = be16_to_cpu(out_mad->status); 280 281 dev->mdev->port_caps[port - 1].ext_port_cap = (!err && !packet_error) ? 282 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0; 283 284 out: 285 kfree(in_mad); 286 kfree(out_mad); 287 return err; 288 } 289 290 int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev, 291 struct ib_smp *out_mad) 292 { 293 struct ib_smp *in_mad = NULL; 294 int err = -ENOMEM; 295 296 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 297 if (!in_mad) 298 return -ENOMEM; 299 300 init_query_mad(in_mad); 301 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 302 303 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, 304 out_mad); 305 306 kfree(in_mad); 307 return err; 308 } 309 310 int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev, 311 __be64 *sys_image_guid) 312 { 313 struct ib_smp *out_mad = NULL; 314 int err = -ENOMEM; 315 316 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 317 if (!out_mad) 318 return -ENOMEM; 319 320 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad); 321 if (err) 322 goto out; 323 324 memcpy(sys_image_guid, out_mad->data + 4, 8); 325 326 out: 327 kfree(out_mad); 328 329 return err; 330 } 331 332 int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev, 333 u16 *max_pkeys) 334 { 335 struct ib_smp *out_mad = NULL; 336 int err = -ENOMEM; 337 338 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 339 if (!out_mad) 340 return -ENOMEM; 341 342 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad); 343 if (err) 344 goto out; 345 346 *max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28)); 347 348 out: 349 kfree(out_mad); 350 351 return err; 352 } 353 354 int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev, 355 u32 *vendor_id) 356 { 357 struct ib_smp *out_mad = NULL; 358 int err = -ENOMEM; 359 360 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 361 if (!out_mad) 362 return -ENOMEM; 363 364 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad); 365 if (err) 366 goto out; 367 368 *vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) & 0xffff; 369 370 out: 371 kfree(out_mad); 372 373 return err; 374 } 375 376 int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc) 377 { 378 struct ib_smp *in_mad = NULL; 379 struct ib_smp *out_mad = NULL; 380 int err = -ENOMEM; 381 382 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 383 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 384 if (!in_mad || !out_mad) 385 goto out; 386 387 init_query_mad(in_mad); 388 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 389 390 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 391 if (err) 392 goto out; 393 394 memcpy(node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX); 395 out: 396 kfree(in_mad); 397 kfree(out_mad); 398 return err; 399 } 400 401 int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid) 402 { 403 struct ib_smp *in_mad = NULL; 404 struct ib_smp *out_mad = NULL; 405 int err = -ENOMEM; 406 407 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 408 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 409 if (!in_mad || !out_mad) 410 goto out; 411 412 init_query_mad(in_mad); 413 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 414 415 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 416 if (err) 417 goto out; 418 419 memcpy(node_guid, out_mad->data + 12, 8); 420 out: 421 kfree(in_mad); 422 kfree(out_mad); 423 return err; 424 } 425 426 int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u8 port, u16 index, 427 u16 *pkey) 428 { 429 struct ib_smp *in_mad = NULL; 430 struct ib_smp *out_mad = NULL; 431 int err = -ENOMEM; 432 433 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 434 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 435 if (!in_mad || !out_mad) 436 goto out; 437 438 init_query_mad(in_mad); 439 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 440 in_mad->attr_mod = cpu_to_be32(index / 32); 441 442 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, 443 out_mad); 444 if (err) 445 goto out; 446 447 *pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]); 448 449 out: 450 kfree(in_mad); 451 kfree(out_mad); 452 return err; 453 } 454 455 int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u8 port, int index, 456 union ib_gid *gid) 457 { 458 struct ib_smp *in_mad = NULL; 459 struct ib_smp *out_mad = NULL; 460 int err = -ENOMEM; 461 462 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 463 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 464 if (!in_mad || !out_mad) 465 goto out; 466 467 init_query_mad(in_mad); 468 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 469 in_mad->attr_mod = cpu_to_be32(port); 470 471 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, 472 out_mad); 473 if (err) 474 goto out; 475 476 memcpy(gid->raw, out_mad->data + 8, 8); 477 478 init_query_mad(in_mad); 479 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 480 in_mad->attr_mod = cpu_to_be32(index / 8); 481 482 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, 483 out_mad); 484 if (err) 485 goto out; 486 487 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 488 489 out: 490 kfree(in_mad); 491 kfree(out_mad); 492 return err; 493 } 494 495 int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u8 port, 496 struct ib_port_attr *props) 497 { 498 struct mlx5_ib_dev *dev = to_mdev(ibdev); 499 struct mlx5_core_dev *mdev = dev->mdev; 500 struct ib_smp *in_mad = NULL; 501 struct ib_smp *out_mad = NULL; 502 int ext_active_speed; 503 int err = -ENOMEM; 504 505 if (port < 1 || port > MLX5_CAP_GEN(mdev, num_ports)) { 506 mlx5_ib_warn(dev, "invalid port number %d\n", port); 507 return -EINVAL; 508 } 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 memset(props, 0, sizeof(*props)); 516 517 init_query_mad(in_mad); 518 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 519 in_mad->attr_mod = cpu_to_be32(port); 520 521 err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad); 522 if (err) { 523 mlx5_ib_warn(dev, "err %d\n", err); 524 goto out; 525 } 526 527 props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16)); 528 props->lmc = out_mad->data[34] & 0x7; 529 props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18)); 530 props->sm_sl = out_mad->data[36] & 0xf; 531 props->state = out_mad->data[32] & 0xf; 532 props->phys_state = out_mad->data[33] >> 4; 533 props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20)); 534 props->gid_tbl_len = out_mad->data[50]; 535 props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg); 536 props->pkey_tbl_len = mdev->port_caps[port - 1].pkey_table_len; 537 props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46)); 538 props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48)); 539 props->active_width = out_mad->data[31] & 0xf; 540 props->active_speed = out_mad->data[35] >> 4; 541 props->max_mtu = out_mad->data[41] & 0xf; 542 props->active_mtu = out_mad->data[36] >> 4; 543 props->subnet_timeout = out_mad->data[51] & 0x1f; 544 props->max_vl_num = out_mad->data[37] >> 4; 545 props->init_type_reply = out_mad->data[41] >> 4; 546 547 /* Check if extended speeds (EDR/FDR/...) are supported */ 548 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 549 ext_active_speed = out_mad->data[62] >> 4; 550 551 switch (ext_active_speed) { 552 case 1: 553 props->active_speed = 16; /* FDR */ 554 break; 555 case 2: 556 props->active_speed = 32; /* EDR */ 557 break; 558 } 559 } 560 561 /* If reported active speed is QDR, check if is FDR-10 */ 562 if (props->active_speed == 4) { 563 if (mdev->port_caps[port - 1].ext_port_cap & 564 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) { 565 init_query_mad(in_mad); 566 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO; 567 in_mad->attr_mod = cpu_to_be32(port); 568 569 err = mlx5_MAD_IFC(dev, 1, 1, port, 570 NULL, NULL, in_mad, out_mad); 571 if (err) 572 goto out; 573 574 /* Checking LinkSpeedActive for FDR-10 */ 575 if (out_mad->data[15] & 0x1) 576 props->active_speed = 8; 577 } 578 } 579 580 out: 581 kfree(in_mad); 582 kfree(out_mad); 583 584 return err; 585 }
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