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, 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 pma_cnt_ext_assign_ppcnt(struct ib_pma_portcounters_ext * cnt_ext,void * out)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 query_ib_ppcnt(struct mlx5_core_dev * dev,u8 port_num,u8 plane_num,void * out,size_t sz,bool ext)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 process_pma_cmd(struct mlx5_ib_dev * dev,u32 port_num,const struct ib_mad * in_mad,struct ib_mad * out_mad)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 err = query_ib_ppcnt(mdev, mdev_port_num, 0, out_cnt, sz, 0); 282 if (!err) 283 pma_cnt_assign(pma_cnt, out_cnt); 284 } 285 kvfree(out_cnt); 286 err = err ? IB_MAD_RESULT_FAILURE : 287 IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; 288 done: 289 if (native_port) 290 mlx5_ib_put_native_port_mdev(dev, port_num); 291 return err; 292 } 293 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)294 int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u32 port_num, 295 const struct ib_wc *in_wc, const struct ib_grh *in_grh, 296 const struct ib_mad *in, struct ib_mad *out, 297 size_t *out_mad_size, u16 *out_mad_pkey_index) 298 { 299 struct mlx5_ib_dev *dev = to_mdev(ibdev); 300 u8 mgmt_class = in->mad_hdr.mgmt_class; 301 u8 method = in->mad_hdr.method; 302 u16 slid; 303 int err; 304 305 slid = in_wc ? ib_lid_cpu16(in_wc->slid) : 306 be16_to_cpu(IB_LID_PERMISSIVE); 307 308 if (method == IB_MGMT_METHOD_TRAP && !slid) 309 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 310 311 switch (mgmt_class) { 312 case IB_MGMT_CLASS_SUBN_LID_ROUTED: 313 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: { 314 if (method != IB_MGMT_METHOD_GET && 315 method != IB_MGMT_METHOD_SET && 316 method != IB_MGMT_METHOD_TRAP_REPRESS) 317 return IB_MAD_RESULT_SUCCESS; 318 319 /* Don't process SMInfo queries -- the SMA can't handle them. 320 */ 321 if (in->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO) 322 return IB_MAD_RESULT_SUCCESS; 323 } break; 324 case IB_MGMT_CLASS_PERF_MGMT: 325 if (MLX5_CAP_GEN(dev->mdev, vport_counters) && 326 method == IB_MGMT_METHOD_GET) 327 return process_pma_cmd(dev, port_num, in, out); 328 fallthrough; 329 case MLX5_IB_VENDOR_CLASS1: 330 case MLX5_IB_VENDOR_CLASS2: 331 case IB_MGMT_CLASS_CONG_MGMT: { 332 if (method != IB_MGMT_METHOD_GET && 333 method != IB_MGMT_METHOD_SET) 334 return IB_MAD_RESULT_SUCCESS; 335 } break; 336 default: 337 return IB_MAD_RESULT_SUCCESS; 338 } 339 340 err = mlx5_MAD_IFC(to_mdev(ibdev), mad_flags & IB_MAD_IGNORE_MKEY, 341 mad_flags & IB_MAD_IGNORE_BKEY, port_num, in_wc, 342 in_grh, in, out); 343 if (err) 344 return IB_MAD_RESULT_FAILURE; 345 346 /* set return bit in status of directed route responses */ 347 if (mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) 348 out->mad_hdr.status |= cpu_to_be16(1 << 15); 349 350 if (method == IB_MGMT_METHOD_TRAP_REPRESS) 351 /* no response for trap repress */ 352 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 353 354 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; 355 } 356 mlx5_query_ext_port_caps(struct mlx5_ib_dev * dev,unsigned int port)357 int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, unsigned int port) 358 { 359 struct ib_smp *in_mad; 360 struct ib_smp *out_mad; 361 int err = -ENOMEM; 362 u16 packet_error; 363 364 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 365 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 366 if (!in_mad || !out_mad) 367 goto out; 368 369 ib_init_query_mad(in_mad); 370 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO; 371 in_mad->attr_mod = cpu_to_be32(port); 372 373 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 374 375 packet_error = be16_to_cpu(out_mad->status); 376 377 dev->port_caps[port - 1].ext_port_cap = (!err && !packet_error) ? 378 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0; 379 380 out: 381 kfree(in_mad); 382 kfree(out_mad); 383 return err; 384 } 385 mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device * ibdev,struct ib_smp * out_mad)386 static int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev, 387 struct ib_smp *out_mad) 388 { 389 struct ib_smp *in_mad; 390 int err; 391 392 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 393 if (!in_mad) 394 return -ENOMEM; 395 396 ib_init_query_mad(in_mad); 397 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 398 399 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, 400 out_mad); 401 402 kfree(in_mad); 403 return err; 404 } 405 mlx5_query_mad_ifc_system_image_guid(struct ib_device * ibdev,__be64 * sys_image_guid)406 int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev, 407 __be64 *sys_image_guid) 408 { 409 struct ib_smp *out_mad; 410 int err; 411 412 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 413 if (!out_mad) 414 return -ENOMEM; 415 416 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad); 417 if (err) 418 goto out; 419 420 memcpy(sys_image_guid, out_mad->data + 4, 8); 421 422 out: 423 kfree(out_mad); 424 425 return err; 426 } 427 mlx5_query_mad_ifc_max_pkeys(struct ib_device * ibdev,u16 * max_pkeys)428 int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev, 429 u16 *max_pkeys) 430 { 431 struct ib_smp *out_mad; 432 int err; 433 434 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 435 if (!out_mad) 436 return -ENOMEM; 437 438 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad); 439 if (err) 440 goto out; 441 442 *max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28)); 443 444 out: 445 kfree(out_mad); 446 447 return err; 448 } 449 mlx5_query_mad_ifc_vendor_id(struct ib_device * ibdev,u32 * vendor_id)450 int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev, 451 u32 *vendor_id) 452 { 453 struct ib_smp *out_mad; 454 int err; 455 456 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 457 if (!out_mad) 458 return -ENOMEM; 459 460 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad); 461 if (err) 462 goto out; 463 464 *vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) & 0xffff; 465 466 out: 467 kfree(out_mad); 468 469 return err; 470 } 471 mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev * dev,char * node_desc)472 int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc) 473 { 474 struct ib_smp *in_mad; 475 struct ib_smp *out_mad; 476 int err = -ENOMEM; 477 478 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 479 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 480 if (!in_mad || !out_mad) 481 goto out; 482 483 ib_init_query_mad(in_mad); 484 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 485 486 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 487 if (err) 488 goto out; 489 490 memcpy(node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX); 491 out: 492 kfree(in_mad); 493 kfree(out_mad); 494 return err; 495 } 496 mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev * dev,__be64 * node_guid)497 int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid) 498 { 499 struct ib_smp *in_mad; 500 struct ib_smp *out_mad; 501 int err = -ENOMEM; 502 503 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 504 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 505 if (!in_mad || !out_mad) 506 goto out; 507 508 ib_init_query_mad(in_mad); 509 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 510 511 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); 512 if (err) 513 goto out; 514 515 memcpy(node_guid, out_mad->data + 12, 8); 516 out: 517 kfree(in_mad); 518 kfree(out_mad); 519 return err; 520 } 521 mlx5_query_mad_ifc_pkey(struct ib_device * ibdev,u32 port,u16 index,u16 * pkey)522 int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u32 port, u16 index, 523 u16 *pkey) 524 { 525 struct ib_smp *in_mad; 526 struct ib_smp *out_mad; 527 int err = -ENOMEM; 528 529 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 530 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 531 if (!in_mad || !out_mad) 532 goto out; 533 534 ib_init_query_mad(in_mad); 535 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 536 in_mad->attr_mod = cpu_to_be32(index / 32); 537 538 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, 539 out_mad); 540 if (err) 541 goto out; 542 543 *pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]); 544 545 out: 546 kfree(in_mad); 547 kfree(out_mad); 548 return err; 549 } 550 mlx5_query_mad_ifc_gids(struct ib_device * ibdev,u32 port,int index,union ib_gid * gid)551 int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u32 port, int index, 552 union ib_gid *gid) 553 { 554 struct ib_smp *in_mad; 555 struct ib_smp *out_mad; 556 int err = -ENOMEM; 557 558 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 559 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 560 if (!in_mad || !out_mad) 561 goto out; 562 563 ib_init_query_mad(in_mad); 564 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 565 in_mad->attr_mod = cpu_to_be32(port); 566 567 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, 568 out_mad); 569 if (err) 570 goto out; 571 572 memcpy(gid->raw, out_mad->data + 8, 8); 573 574 ib_init_query_mad(in_mad); 575 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 576 in_mad->attr_mod = cpu_to_be32(index / 8); 577 578 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, 579 out_mad); 580 if (err) 581 goto out; 582 583 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 584 585 out: 586 kfree(in_mad); 587 kfree(out_mad); 588 return err; 589 } 590 mlx5_query_mad_ifc_port(struct ib_device * ibdev,u32 port,struct ib_port_attr * props)591 int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u32 port, 592 struct ib_port_attr *props) 593 { 594 struct mlx5_ib_dev *dev = to_mdev(ibdev); 595 struct mlx5_core_dev *mdev = dev->mdev; 596 struct ib_smp *in_mad; 597 struct ib_smp *out_mad; 598 int ext_active_speed; 599 int err = -ENOMEM; 600 601 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 602 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 603 if (!in_mad || !out_mad) 604 goto out; 605 606 /* props being zeroed by the caller, avoid zeroing it here */ 607 608 ib_init_query_mad(in_mad); 609 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 610 in_mad->attr_mod = cpu_to_be32(port); 611 612 err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad); 613 if (err) { 614 mlx5_ib_warn(dev, "err %d\n", err); 615 goto out; 616 } 617 618 props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16)); 619 props->lmc = out_mad->data[34] & 0x7; 620 props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18)); 621 props->sm_sl = out_mad->data[36] & 0xf; 622 props->state = out_mad->data[32] & 0xf; 623 props->phys_state = out_mad->data[33] >> 4; 624 props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20)); 625 props->gid_tbl_len = out_mad->data[50]; 626 props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg); 627 props->pkey_tbl_len = dev->pkey_table_len; 628 props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46)); 629 props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48)); 630 props->active_width = out_mad->data[31] & 0xf; 631 props->active_speed = out_mad->data[35] >> 4; 632 props->max_mtu = out_mad->data[41] & 0xf; 633 props->active_mtu = out_mad->data[36] >> 4; 634 props->subnet_timeout = out_mad->data[51] & 0x1f; 635 props->max_vl_num = out_mad->data[37] >> 4; 636 props->init_type_reply = out_mad->data[41] >> 4; 637 638 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP) { 639 props->port_cap_flags2 = 640 be16_to_cpup((__be16 *)(out_mad->data + 60)); 641 642 if (props->port_cap_flags2 & IB_PORT_LINK_WIDTH_2X_SUP) 643 props->active_width = out_mad->data[31] & 0x1f; 644 } 645 646 /* Check if extended speeds (EDR/FDR/...) are supported */ 647 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 648 ext_active_speed = out_mad->data[62] >> 4; 649 650 switch (ext_active_speed) { 651 case 1: 652 props->active_speed = 16; /* FDR */ 653 break; 654 case 2: 655 props->active_speed = 32; /* EDR */ 656 break; 657 case 4: 658 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP && 659 props->port_cap_flags2 & IB_PORT_LINK_SPEED_HDR_SUP) 660 props->active_speed = IB_SPEED_HDR; 661 break; 662 case 8: 663 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP && 664 props->port_cap_flags2 & IB_PORT_LINK_SPEED_NDR_SUP) 665 props->active_speed = IB_SPEED_NDR; 666 break; 667 } 668 } 669 670 /* Check if extended speeds 2 (XDR/...) are supported */ 671 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP && 672 props->port_cap_flags2 & IB_PORT_EXTENDED_SPEEDS2_SUP) { 673 ext_active_speed = (out_mad->data[56] >> 4) & 0x6; 674 675 switch (ext_active_speed) { 676 case 2: 677 if (props->port_cap_flags2 & IB_PORT_LINK_SPEED_XDR_SUP) 678 props->active_speed = IB_SPEED_XDR; 679 break; 680 } 681 } 682 683 /* If reported active speed is QDR, check if is FDR-10 */ 684 if (props->active_speed == 4) { 685 if (dev->port_caps[port - 1].ext_port_cap & 686 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) { 687 ib_init_query_mad(in_mad); 688 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO; 689 in_mad->attr_mod = cpu_to_be32(port); 690 691 err = mlx5_MAD_IFC(dev, 1, 1, port, 692 NULL, NULL, in_mad, out_mad); 693 if (err) 694 goto out; 695 696 /* Checking LinkSpeedActive for FDR-10 */ 697 if (out_mad->data[15] & 0x1) 698 props->active_speed = 8; 699 } 700 } 701 702 out: 703 kfree(in_mad); 704 kfree(out_mad); 705 706 return err; 707 } 708