1 /* 2 * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. 3 * Copyright (c) 2004 Infinicon Corporation. All rights reserved. 4 * Copyright (c) 2004 Intel Corporation. All rights reserved. 5 * Copyright (c) 2004 Topspin Corporation. All rights reserved. 6 * Copyright (c) 2004-2006 Voltaire Corporation. All rights reserved. 7 * 8 * This software is available to you under a choice of one of two 9 * licenses. You may choose to be licensed under the terms of the GNU 10 * General Public License (GPL) Version 2, available from the file 11 * COPYING in the main directory of this source tree, or the 12 * OpenIB.org BSD license below: 13 * 14 * Redistribution and use in source and binary forms, with or 15 * without modification, are permitted provided that the following 16 * conditions are met: 17 * 18 * - Redistributions of source code must retain the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer. 21 * 22 * - Redistributions in binary form must reproduce the above 23 * copyright notice, this list of conditions and the following 24 * disclaimer in the documentation and/or other materials 25 * provided with the distribution. 26 * 27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 28 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 29 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 30 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 31 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 32 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 33 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 34 * SOFTWARE. 35 */ 36 37 #if !defined(IB_MAD_H) 38 #define IB_MAD_H 39 40 #include <linux/list.h> 41 42 #include <rdma/ib_verbs.h> 43 #include <uapi/rdma/ib_user_mad.h> 44 45 /* Management base versions */ 46 #define IB_MGMT_BASE_VERSION 1 47 #define OPA_MGMT_BASE_VERSION 0x80 48 49 #define OPA_SM_CLASS_VERSION 0x80 50 51 /* Management classes */ 52 #define IB_MGMT_CLASS_SUBN_LID_ROUTED 0x01 53 #define IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE 0x81 54 #define IB_MGMT_CLASS_SUBN_ADM 0x03 55 #define IB_MGMT_CLASS_PERF_MGMT 0x04 56 #define IB_MGMT_CLASS_BM 0x05 57 #define IB_MGMT_CLASS_DEVICE_MGMT 0x06 58 #define IB_MGMT_CLASS_CM 0x07 59 #define IB_MGMT_CLASS_SNMP 0x08 60 #define IB_MGMT_CLASS_DEVICE_ADM 0x10 61 #define IB_MGMT_CLASS_BOOT_MGMT 0x11 62 #define IB_MGMT_CLASS_BIS 0x12 63 #define IB_MGMT_CLASS_CONG_MGMT 0x21 64 #define IB_MGMT_CLASS_VENDOR_RANGE2_START 0x30 65 #define IB_MGMT_CLASS_VENDOR_RANGE2_END 0x4F 66 67 #define IB_OPENIB_OUI (0x001405) 68 69 /* Management methods */ 70 #define IB_MGMT_METHOD_GET 0x01 71 #define IB_MGMT_METHOD_SET 0x02 72 #define IB_MGMT_METHOD_GET_RESP 0x81 73 #define IB_MGMT_METHOD_SEND 0x03 74 #define IB_MGMT_METHOD_TRAP 0x05 75 #define IB_MGMT_METHOD_REPORT 0x06 76 #define IB_MGMT_METHOD_REPORT_RESP 0x86 77 #define IB_MGMT_METHOD_TRAP_REPRESS 0x07 78 79 #define IB_MGMT_METHOD_RESP 0x80 80 #define IB_BM_ATTR_MOD_RESP cpu_to_be32(1) 81 82 #define IB_MGMT_MAX_METHODS 128 83 84 /* MAD Status field bit masks */ 85 #define IB_MGMT_MAD_STATUS_SUCCESS 0x0000 86 #define IB_MGMT_MAD_STATUS_BUSY 0x0001 87 #define IB_MGMT_MAD_STATUS_REDIRECT_REQD 0x0002 88 #define IB_MGMT_MAD_STATUS_BAD_VERSION 0x0004 89 #define IB_MGMT_MAD_STATUS_UNSUPPORTED_METHOD 0x0008 90 #define IB_MGMT_MAD_STATUS_UNSUPPORTED_METHOD_ATTRIB 0x000c 91 #define IB_MGMT_MAD_STATUS_INVALID_ATTRIB_VALUE 0x001c 92 93 /* RMPP information */ 94 #define IB_MGMT_RMPP_VERSION 1 95 96 #define IB_MGMT_RMPP_TYPE_DATA 1 97 #define IB_MGMT_RMPP_TYPE_ACK 2 98 #define IB_MGMT_RMPP_TYPE_STOP 3 99 #define IB_MGMT_RMPP_TYPE_ABORT 4 100 101 #define IB_MGMT_RMPP_FLAG_ACTIVE 1 102 #define IB_MGMT_RMPP_FLAG_FIRST (1<<1) 103 #define IB_MGMT_RMPP_FLAG_LAST (1<<2) 104 105 #define IB_MGMT_RMPP_NO_RESPTIME 0x1F 106 107 #define IB_MGMT_RMPP_STATUS_SUCCESS 0 108 #define IB_MGMT_RMPP_STATUS_RESX 1 109 #define IB_MGMT_RMPP_STATUS_ABORT_MIN 118 110 #define IB_MGMT_RMPP_STATUS_T2L 118 111 #define IB_MGMT_RMPP_STATUS_BAD_LEN 119 112 #define IB_MGMT_RMPP_STATUS_BAD_SEG 120 113 #define IB_MGMT_RMPP_STATUS_BADT 121 114 #define IB_MGMT_RMPP_STATUS_W2S 122 115 #define IB_MGMT_RMPP_STATUS_S2B 123 116 #define IB_MGMT_RMPP_STATUS_BAD_STATUS 124 117 #define IB_MGMT_RMPP_STATUS_UNV 125 118 #define IB_MGMT_RMPP_STATUS_TMR 126 119 #define IB_MGMT_RMPP_STATUS_UNSPEC 127 120 #define IB_MGMT_RMPP_STATUS_ABORT_MAX 127 121 122 #define IB_QP0 0 123 #define IB_QP1 cpu_to_be32(1) 124 #define IB_QP1_QKEY 0x80010000 125 #define IB_QP_SET_QKEY 0x80000000 126 127 #define IB_DEFAULT_PKEY_PARTIAL 0x7FFF 128 #define IB_DEFAULT_PKEY_FULL 0xFFFF 129 130 /* 131 * Generic trap/notice types 132 */ 133 #define IB_NOTICE_TYPE_FATAL 0x80 134 #define IB_NOTICE_TYPE_URGENT 0x81 135 #define IB_NOTICE_TYPE_SECURITY 0x82 136 #define IB_NOTICE_TYPE_SM 0x83 137 #define IB_NOTICE_TYPE_INFO 0x84 138 139 /* 140 * Generic trap/notice producers 141 */ 142 #define IB_NOTICE_PROD_CA cpu_to_be16(1) 143 #define IB_NOTICE_PROD_SWITCH cpu_to_be16(2) 144 #define IB_NOTICE_PROD_ROUTER cpu_to_be16(3) 145 #define IB_NOTICE_PROD_CLASS_MGR cpu_to_be16(4) 146 147 enum { 148 IB_MGMT_MAD_HDR = 24, 149 IB_MGMT_MAD_DATA = 232, 150 IB_MGMT_RMPP_HDR = 36, 151 IB_MGMT_RMPP_DATA = 220, 152 IB_MGMT_VENDOR_HDR = 40, 153 IB_MGMT_VENDOR_DATA = 216, 154 IB_MGMT_SA_HDR = 56, 155 IB_MGMT_SA_DATA = 200, 156 IB_MGMT_DEVICE_HDR = 64, 157 IB_MGMT_DEVICE_DATA = 192, 158 IB_MGMT_MAD_SIZE = IB_MGMT_MAD_HDR + IB_MGMT_MAD_DATA, 159 OPA_MGMT_MAD_DATA = 2024, 160 OPA_MGMT_RMPP_DATA = 2012, 161 OPA_MGMT_MAD_SIZE = IB_MGMT_MAD_HDR + OPA_MGMT_MAD_DATA, 162 }; 163 164 struct ib_mad_hdr { 165 u8 base_version; 166 u8 mgmt_class; 167 u8 class_version; 168 u8 method; 169 __be16 status; 170 __be16 class_specific; 171 __be64 tid; 172 __be16 attr_id; 173 __be16 resv; 174 __be32 attr_mod; 175 }; 176 177 struct ib_rmpp_hdr { 178 u8 rmpp_version; 179 u8 rmpp_type; 180 u8 rmpp_rtime_flags; 181 u8 rmpp_status; 182 __be32 seg_num; 183 __be32 paylen_newwin; 184 }; 185 186 typedef u64 __bitwise ib_sa_comp_mask; 187 188 #define IB_SA_COMP_MASK(n) ((__force ib_sa_comp_mask) cpu_to_be64(1ull << (n))) 189 190 /* 191 * ib_sa_hdr and ib_sa_mad structures must be packed because they have 192 * 64-bit fields that are only 32-bit aligned. 64-bit architectures will 193 * lay them out wrong otherwise. (And unfortunately they are sent on 194 * the wire so we can't change the layout) 195 */ 196 struct ib_sa_hdr { 197 __be64 sm_key; 198 __be16 attr_offset; 199 __be16 reserved; 200 ib_sa_comp_mask comp_mask; 201 } __attribute__ ((packed)); 202 203 struct ib_mad { 204 struct ib_mad_hdr mad_hdr; 205 u8 data[IB_MGMT_MAD_DATA]; 206 }; 207 208 struct opa_mad { 209 struct ib_mad_hdr mad_hdr; 210 u8 data[OPA_MGMT_MAD_DATA]; 211 }; 212 213 struct ib_rmpp_mad { 214 struct ib_mad_hdr mad_hdr; 215 struct ib_rmpp_hdr rmpp_hdr; 216 u8 data[IB_MGMT_RMPP_DATA]; 217 }; 218 219 struct opa_rmpp_mad { 220 struct ib_mad_hdr mad_hdr; 221 struct ib_rmpp_hdr rmpp_hdr; 222 u8 data[OPA_MGMT_RMPP_DATA]; 223 }; 224 225 struct ib_sa_mad { 226 struct ib_mad_hdr mad_hdr; 227 struct ib_rmpp_hdr rmpp_hdr; 228 struct ib_sa_hdr sa_hdr; 229 u8 data[IB_MGMT_SA_DATA]; 230 } __attribute__ ((packed)); 231 232 struct ib_vendor_mad { 233 struct ib_mad_hdr mad_hdr; 234 struct ib_rmpp_hdr rmpp_hdr; 235 u8 reserved; 236 u8 oui[3]; 237 u8 data[IB_MGMT_VENDOR_DATA]; 238 }; 239 240 #define IB_MGMT_CLASSPORTINFO_ATTR_ID cpu_to_be16(0x0001) 241 242 #define IB_CLASS_PORT_INFO_RESP_TIME_MASK 0x1F 243 #define IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE 5 244 245 struct ib_class_port_info { 246 u8 base_version; 247 u8 class_version; 248 __be16 capability_mask; 249 /* 27 bits for cap_mask2, 5 bits for resp_time */ 250 __be32 cap_mask2_resp_time; 251 u8 redirect_gid[16]; 252 __be32 redirect_tcslfl; 253 __be16 redirect_lid; 254 __be16 redirect_pkey; 255 __be32 redirect_qp; 256 __be32 redirect_qkey; 257 u8 trap_gid[16]; 258 __be32 trap_tcslfl; 259 __be16 trap_lid; 260 __be16 trap_pkey; 261 __be32 trap_hlqp; 262 __be32 trap_qkey; 263 }; 264 265 #define OPA_CLASS_PORT_INFO_PR_SUPPORT BIT(26) 266 267 struct opa_class_port_info { 268 u8 base_version; 269 u8 class_version; 270 __be16 cap_mask; 271 __be32 cap_mask2_resp_time; 272 273 u8 redirect_gid[16]; 274 __be32 redirect_tc_fl; 275 __be32 redirect_lid; 276 __be32 redirect_sl_qp; 277 __be32 redirect_qkey; 278 279 u8 trap_gid[16]; 280 __be32 trap_tc_fl; 281 __be32 trap_lid; 282 __be32 trap_hl_qp; 283 __be32 trap_qkey; 284 285 __be16 trap_pkey; 286 __be16 redirect_pkey; 287 288 u8 trap_sl_rsvd; 289 u8 reserved[3]; 290 } __packed; 291 292 /** 293 * ib_get_cpi_resp_time - Returns the resp_time value from 294 * cap_mask2_resp_time in ib_class_port_info. 295 * @cpi: A struct ib_class_port_info mad. 296 */ 297 static inline u8 ib_get_cpi_resp_time(struct ib_class_port_info *cpi) 298 { 299 return (u8)(be32_to_cpu(cpi->cap_mask2_resp_time) & 300 IB_CLASS_PORT_INFO_RESP_TIME_MASK); 301 } 302 303 /** 304 * ib_set_cpi_resptime - Sets the response time in an 305 * ib_class_port_info mad. 306 * @cpi: A struct ib_class_port_info. 307 * @rtime: The response time to set. 308 */ 309 static inline void ib_set_cpi_resp_time(struct ib_class_port_info *cpi, 310 u8 rtime) 311 { 312 cpi->cap_mask2_resp_time = 313 (cpi->cap_mask2_resp_time & 314 cpu_to_be32(~IB_CLASS_PORT_INFO_RESP_TIME_MASK)) | 315 cpu_to_be32(rtime & IB_CLASS_PORT_INFO_RESP_TIME_MASK); 316 } 317 318 /** 319 * ib_get_cpi_capmask2 - Returns the capmask2 value from 320 * cap_mask2_resp_time in ib_class_port_info. 321 * @cpi: A struct ib_class_port_info mad. 322 */ 323 static inline u32 ib_get_cpi_capmask2(struct ib_class_port_info *cpi) 324 { 325 return (be32_to_cpu(cpi->cap_mask2_resp_time) >> 326 IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE); 327 } 328 329 /** 330 * ib_set_cpi_capmask2 - Sets the capmask2 in an 331 * ib_class_port_info mad. 332 * @cpi: A struct ib_class_port_info. 333 * @capmask2: The capmask2 to set. 334 */ 335 static inline void ib_set_cpi_capmask2(struct ib_class_port_info *cpi, 336 u32 capmask2) 337 { 338 cpi->cap_mask2_resp_time = 339 (cpi->cap_mask2_resp_time & 340 cpu_to_be32(IB_CLASS_PORT_INFO_RESP_TIME_MASK)) | 341 cpu_to_be32(capmask2 << 342 IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE); 343 } 344 345 /** 346 * opa_get_cpi_capmask2 - Returns the capmask2 value from 347 * cap_mask2_resp_time in ib_class_port_info. 348 * @cpi: A struct opa_class_port_info mad. 349 */ 350 static inline u32 opa_get_cpi_capmask2(struct opa_class_port_info *cpi) 351 { 352 return (be32_to_cpu(cpi->cap_mask2_resp_time) >> 353 IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE); 354 } 355 356 struct ib_mad_notice_attr { 357 u8 generic_type; 358 u8 prod_type_msb; 359 __be16 prod_type_lsb; 360 __be16 trap_num; 361 __be16 issuer_lid; 362 __be16 toggle_count; 363 364 union { 365 struct { 366 u8 details[54]; 367 } raw_data; 368 369 struct { 370 __be16 reserved; 371 __be16 lid; /* where violation happened */ 372 u8 port_num; /* where violation happened */ 373 } __packed ntc_129_131; 374 375 struct { 376 __be16 reserved; 377 __be16 lid; /* LID where change occurred */ 378 u8 reserved2; 379 u8 local_changes; /* low bit - local changes */ 380 __be32 new_cap_mask; /* new capability mask */ 381 u8 reserved3; 382 u8 change_flags; /* low 3 bits only */ 383 } __packed ntc_144; 384 385 struct { 386 __be16 reserved; 387 __be16 lid; /* lid where sys guid changed */ 388 __be16 reserved2; 389 __be64 new_sys_guid; 390 } __packed ntc_145; 391 392 struct { 393 __be16 reserved; 394 __be16 lid; 395 __be16 dr_slid; 396 u8 method; 397 u8 reserved2; 398 __be16 attr_id; 399 __be32 attr_mod; 400 __be64 mkey; 401 u8 reserved3; 402 u8 dr_trunc_hop; 403 u8 dr_rtn_path[30]; 404 } __packed ntc_256; 405 406 struct { 407 __be16 reserved; 408 __be16 lid1; 409 __be16 lid2; 410 __be32 key; 411 __be32 sl_qp1; /* SL: high 4 bits */ 412 __be32 qp2; /* high 8 bits reserved */ 413 union ib_gid gid1; 414 union ib_gid gid2; 415 } __packed ntc_257_258; 416 417 } details; 418 }; 419 420 /** 421 * ib_mad_send_buf - MAD data buffer and work request for sends. 422 * @next: A pointer used to chain together MADs for posting. 423 * @mad: References an allocated MAD data buffer for MADs that do not have 424 * RMPP active. For MADs using RMPP, references the common and management 425 * class specific headers. 426 * @mad_agent: MAD agent that allocated the buffer. 427 * @ah: The address handle to use when sending the MAD. 428 * @context: User-controlled context fields. 429 * @hdr_len: Indicates the size of the data header of the MAD. This length 430 * includes the common MAD, RMPP, and class specific headers. 431 * @data_len: Indicates the total size of user-transferred data. 432 * @seg_count: The number of RMPP segments allocated for this send. 433 * @seg_size: Size of the data in each RMPP segment. This does not include 434 * class specific headers. 435 * @seg_rmpp_size: Size of each RMPP segment including the class specific 436 * headers. 437 * @timeout_ms: Time to wait for a response. 438 * @retries: Number of times to retry a request for a response. For MADs 439 * using RMPP, this applies per window. On completion, returns the number 440 * of retries needed to complete the transfer. 441 * 442 * Users are responsible for initializing the MAD buffer itself, with the 443 * exception of any RMPP header. Additional segment buffer space allocated 444 * beyond data_len is padding. 445 */ 446 struct ib_mad_send_buf { 447 struct ib_mad_send_buf *next; 448 void *mad; 449 struct ib_mad_agent *mad_agent; 450 struct ib_ah *ah; 451 void *context[2]; 452 int hdr_len; 453 int data_len; 454 int seg_count; 455 int seg_size; 456 int seg_rmpp_size; 457 int timeout_ms; 458 int retries; 459 }; 460 461 /** 462 * ib_response_mad - Returns if the specified MAD has been generated in 463 * response to a sent request or trap. 464 */ 465 int ib_response_mad(const struct ib_mad_hdr *hdr); 466 467 /** 468 * ib_get_rmpp_resptime - Returns the RMPP response time. 469 * @rmpp_hdr: An RMPP header. 470 */ 471 static inline u8 ib_get_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr) 472 { 473 return rmpp_hdr->rmpp_rtime_flags >> 3; 474 } 475 476 /** 477 * ib_get_rmpp_flags - Returns the RMPP flags. 478 * @rmpp_hdr: An RMPP header. 479 */ 480 static inline u8 ib_get_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr) 481 { 482 return rmpp_hdr->rmpp_rtime_flags & 0x7; 483 } 484 485 /** 486 * ib_set_rmpp_resptime - Sets the response time in an RMPP header. 487 * @rmpp_hdr: An RMPP header. 488 * @rtime: The response time to set. 489 */ 490 static inline void ib_set_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr, u8 rtime) 491 { 492 rmpp_hdr->rmpp_rtime_flags = ib_get_rmpp_flags(rmpp_hdr) | (rtime << 3); 493 } 494 495 /** 496 * ib_set_rmpp_flags - Sets the flags in an RMPP header. 497 * @rmpp_hdr: An RMPP header. 498 * @flags: The flags to set. 499 */ 500 static inline void ib_set_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr, u8 flags) 501 { 502 rmpp_hdr->rmpp_rtime_flags = (rmpp_hdr->rmpp_rtime_flags & 0xF8) | 503 (flags & 0x7); 504 } 505 506 struct ib_mad_agent; 507 struct ib_mad_send_wc; 508 struct ib_mad_recv_wc; 509 510 /** 511 * ib_mad_send_handler - callback handler for a sent MAD. 512 * @mad_agent: MAD agent that sent the MAD. 513 * @mad_send_wc: Send work completion information on the sent MAD. 514 */ 515 typedef void (*ib_mad_send_handler)(struct ib_mad_agent *mad_agent, 516 struct ib_mad_send_wc *mad_send_wc); 517 518 /** 519 * ib_mad_snoop_handler - Callback handler for snooping sent MADs. 520 * @mad_agent: MAD agent that snooped the MAD. 521 * @send_buf: send MAD data buffer. 522 * @mad_send_wc: Work completion information on the sent MAD. Valid 523 * only for snooping that occurs on a send completion. 524 * 525 * Clients snooping MADs should not modify data referenced by the @send_buf 526 * or @mad_send_wc. 527 */ 528 typedef void (*ib_mad_snoop_handler)(struct ib_mad_agent *mad_agent, 529 struct ib_mad_send_buf *send_buf, 530 struct ib_mad_send_wc *mad_send_wc); 531 532 /** 533 * ib_mad_recv_handler - callback handler for a received MAD. 534 * @mad_agent: MAD agent requesting the received MAD. 535 * @send_buf: Send buffer if found, else NULL 536 * @mad_recv_wc: Received work completion information on the received MAD. 537 * 538 * MADs received in response to a send request operation will be handed to 539 * the user before the send operation completes. All data buffers given 540 * to registered agents through this routine are owned by the receiving 541 * client, except for snooping agents. Clients snooping MADs should not 542 * modify the data referenced by @mad_recv_wc. 543 */ 544 typedef void (*ib_mad_recv_handler)(struct ib_mad_agent *mad_agent, 545 struct ib_mad_send_buf *send_buf, 546 struct ib_mad_recv_wc *mad_recv_wc); 547 548 /** 549 * ib_mad_agent - Used to track MAD registration with the access layer. 550 * @device: Reference to device registration is on. 551 * @qp: Reference to QP used for sending and receiving MADs. 552 * @mr: Memory region for system memory usable for DMA. 553 * @recv_handler: Callback handler for a received MAD. 554 * @send_handler: Callback handler for a sent MAD. 555 * @snoop_handler: Callback handler for snooped sent MADs. 556 * @context: User-specified context associated with this registration. 557 * @hi_tid: Access layer assigned transaction ID for this client. 558 * Unsolicited MADs sent by this client will have the upper 32-bits 559 * of their TID set to this value. 560 * @flags: registration flags 561 * @port_num: Port number on which QP is registered 562 * @rmpp_version: If set, indicates the RMPP version used by this agent. 563 */ 564 enum { 565 IB_MAD_USER_RMPP = IB_USER_MAD_USER_RMPP, 566 }; 567 struct ib_mad_agent { 568 struct ib_device *device; 569 struct ib_qp *qp; 570 ib_mad_recv_handler recv_handler; 571 ib_mad_send_handler send_handler; 572 ib_mad_snoop_handler snoop_handler; 573 void *context; 574 u32 hi_tid; 575 u32 flags; 576 u8 port_num; 577 u8 rmpp_version; 578 }; 579 580 /** 581 * ib_mad_send_wc - MAD send completion information. 582 * @send_buf: Send MAD data buffer associated with the send MAD request. 583 * @status: Completion status. 584 * @vendor_err: Optional vendor error information returned with a failed 585 * request. 586 */ 587 struct ib_mad_send_wc { 588 struct ib_mad_send_buf *send_buf; 589 enum ib_wc_status status; 590 u32 vendor_err; 591 }; 592 593 /** 594 * ib_mad_recv_buf - received MAD buffer information. 595 * @list: Reference to next data buffer for a received RMPP MAD. 596 * @grh: References a data buffer containing the global route header. 597 * The data refereced by this buffer is only valid if the GRH is 598 * valid. 599 * @mad: References the start of the received MAD. 600 */ 601 struct ib_mad_recv_buf { 602 struct list_head list; 603 struct ib_grh *grh; 604 union { 605 struct ib_mad *mad; 606 struct opa_mad *opa_mad; 607 }; 608 }; 609 610 /** 611 * ib_mad_recv_wc - received MAD information. 612 * @wc: Completion information for the received data. 613 * @recv_buf: Specifies the location of the received data buffer(s). 614 * @rmpp_list: Specifies a list of RMPP reassembled received MAD buffers. 615 * @mad_len: The length of the received MAD, without duplicated headers. 616 * @mad_seg_size: The size of individual MAD segments 617 * 618 * For received response, the wr_id contains a pointer to the ib_mad_send_buf 619 * for the corresponding send request. 620 */ 621 struct ib_mad_recv_wc { 622 struct ib_wc *wc; 623 struct ib_mad_recv_buf recv_buf; 624 struct list_head rmpp_list; 625 int mad_len; 626 size_t mad_seg_size; 627 }; 628 629 /** 630 * ib_mad_reg_req - MAD registration request 631 * @mgmt_class: Indicates which management class of MADs should be receive 632 * by the caller. This field is only required if the user wishes to 633 * receive unsolicited MADs, otherwise it should be 0. 634 * @mgmt_class_version: Indicates which version of MADs for the given 635 * management class to receive. 636 * @oui: Indicates IEEE OUI when mgmt_class is a vendor class 637 * in the range from 0x30 to 0x4f. Otherwise not used. 638 * @method_mask: The caller will receive unsolicited MADs for any method 639 * where @method_mask = 1. 640 * 641 */ 642 struct ib_mad_reg_req { 643 u8 mgmt_class; 644 u8 mgmt_class_version; 645 u8 oui[3]; 646 DECLARE_BITMAP(method_mask, IB_MGMT_MAX_METHODS); 647 }; 648 649 /** 650 * ib_register_mad_agent - Register to send/receive MADs. 651 * @device: The device to register with. 652 * @port_num: The port on the specified device to use. 653 * @qp_type: Specifies which QP to access. Must be either 654 * IB_QPT_SMI or IB_QPT_GSI. 655 * @mad_reg_req: Specifies which unsolicited MADs should be received 656 * by the caller. This parameter may be NULL if the caller only 657 * wishes to receive solicited responses. 658 * @rmpp_version: If set, indicates that the client will send 659 * and receive MADs that contain the RMPP header for the given version. 660 * If set to 0, indicates that RMPP is not used by this client. 661 * @send_handler: The completion callback routine invoked after a send 662 * request has completed. 663 * @recv_handler: The completion callback routine invoked for a received 664 * MAD. 665 * @context: User specified context associated with the registration. 666 * @registration_flags: Registration flags to set for this agent 667 */ 668 struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device, 669 u8 port_num, 670 enum ib_qp_type qp_type, 671 struct ib_mad_reg_req *mad_reg_req, 672 u8 rmpp_version, 673 ib_mad_send_handler send_handler, 674 ib_mad_recv_handler recv_handler, 675 void *context, 676 u32 registration_flags); 677 678 enum ib_mad_snoop_flags { 679 /*IB_MAD_SNOOP_POSTED_SENDS = 1,*/ 680 /*IB_MAD_SNOOP_RMPP_SENDS = (1<<1),*/ 681 IB_MAD_SNOOP_SEND_COMPLETIONS = (1<<2), 682 /*IB_MAD_SNOOP_RMPP_SEND_COMPLETIONS = (1<<3),*/ 683 IB_MAD_SNOOP_RECVS = (1<<4) 684 /*IB_MAD_SNOOP_RMPP_RECVS = (1<<5),*/ 685 /*IB_MAD_SNOOP_REDIRECTED_QPS = (1<<6)*/ 686 }; 687 688 /** 689 * ib_register_mad_snoop - Register to snoop sent and received MADs. 690 * @device: The device to register with. 691 * @port_num: The port on the specified device to use. 692 * @qp_type: Specifies which QP traffic to snoop. Must be either 693 * IB_QPT_SMI or IB_QPT_GSI. 694 * @mad_snoop_flags: Specifies information where snooping occurs. 695 * @send_handler: The callback routine invoked for a snooped send. 696 * @recv_handler: The callback routine invoked for a snooped receive. 697 * @context: User specified context associated with the registration. 698 */ 699 struct ib_mad_agent *ib_register_mad_snoop(struct ib_device *device, 700 u8 port_num, 701 enum ib_qp_type qp_type, 702 int mad_snoop_flags, 703 ib_mad_snoop_handler snoop_handler, 704 ib_mad_recv_handler recv_handler, 705 void *context); 706 707 /** 708 * ib_unregister_mad_agent - Unregisters a client from using MAD services. 709 * @mad_agent: Corresponding MAD registration request to deregister. 710 * 711 * After invoking this routine, MAD services are no longer usable by the 712 * client on the associated QP. 713 */ 714 void ib_unregister_mad_agent(struct ib_mad_agent *mad_agent); 715 716 /** 717 * ib_post_send_mad - Posts MAD(s) to the send queue of the QP associated 718 * with the registered client. 719 * @send_buf: Specifies the information needed to send the MAD(s). 720 * @bad_send_buf: Specifies the MAD on which an error was encountered. This 721 * parameter is optional if only a single MAD is posted. 722 * 723 * Sent MADs are not guaranteed to complete in the order that they were posted. 724 * 725 * If the MAD requires RMPP, the data buffer should contain a single copy 726 * of the common MAD, RMPP, and class specific headers, followed by the class 727 * defined data. If the class defined data would not divide evenly into 728 * RMPP segments, then space must be allocated at the end of the referenced 729 * buffer for any required padding. To indicate the amount of class defined 730 * data being transferred, the paylen_newwin field in the RMPP header should 731 * be set to the size of the class specific header plus the amount of class 732 * defined data being transferred. The paylen_newwin field should be 733 * specified in network-byte order. 734 */ 735 int ib_post_send_mad(struct ib_mad_send_buf *send_buf, 736 struct ib_mad_send_buf **bad_send_buf); 737 738 739 /** 740 * ib_free_recv_mad - Returns data buffers used to receive a MAD. 741 * @mad_recv_wc: Work completion information for a received MAD. 742 * 743 * Clients receiving MADs through their ib_mad_recv_handler must call this 744 * routine to return the work completion buffers to the access layer. 745 */ 746 void ib_free_recv_mad(struct ib_mad_recv_wc *mad_recv_wc); 747 748 /** 749 * ib_cancel_mad - Cancels an outstanding send MAD operation. 750 * @mad_agent: Specifies the registration associated with sent MAD. 751 * @send_buf: Indicates the MAD to cancel. 752 * 753 * MADs will be returned to the user through the corresponding 754 * ib_mad_send_handler. 755 */ 756 void ib_cancel_mad(struct ib_mad_agent *mad_agent, 757 struct ib_mad_send_buf *send_buf); 758 759 /** 760 * ib_modify_mad - Modifies an outstanding send MAD operation. 761 * @mad_agent: Specifies the registration associated with sent MAD. 762 * @send_buf: Indicates the MAD to modify. 763 * @timeout_ms: New timeout value for sent MAD. 764 * 765 * This call will reset the timeout value for a sent MAD to the specified 766 * value. 767 */ 768 int ib_modify_mad(struct ib_mad_agent *mad_agent, 769 struct ib_mad_send_buf *send_buf, u32 timeout_ms); 770 771 /** 772 * ib_redirect_mad_qp - Registers a QP for MAD services. 773 * @qp: Reference to a QP that requires MAD services. 774 * @rmpp_version: If set, indicates that the client will send 775 * and receive MADs that contain the RMPP header for the given version. 776 * If set to 0, indicates that RMPP is not used by this client. 777 * @send_handler: The completion callback routine invoked after a send 778 * request has completed. 779 * @recv_handler: The completion callback routine invoked for a received 780 * MAD. 781 * @context: User specified context associated with the registration. 782 * 783 * Use of this call allows clients to use MAD services, such as RMPP, 784 * on user-owned QPs. After calling this routine, users may send 785 * MADs on the specified QP by calling ib_mad_post_send. 786 */ 787 struct ib_mad_agent *ib_redirect_mad_qp(struct ib_qp *qp, 788 u8 rmpp_version, 789 ib_mad_send_handler send_handler, 790 ib_mad_recv_handler recv_handler, 791 void *context); 792 793 /** 794 * ib_process_mad_wc - Processes a work completion associated with a 795 * MAD sent or received on a redirected QP. 796 * @mad_agent: Specifies the registered MAD service using the redirected QP. 797 * @wc: References a work completion associated with a sent or received 798 * MAD segment. 799 * 800 * This routine is used to complete or continue processing on a MAD request. 801 * If the work completion is associated with a send operation, calling 802 * this routine is required to continue an RMPP transfer or to wait for a 803 * corresponding response, if it is a request. If the work completion is 804 * associated with a receive operation, calling this routine is required to 805 * process an inbound or outbound RMPP transfer, or to match a response MAD 806 * with its corresponding request. 807 */ 808 int ib_process_mad_wc(struct ib_mad_agent *mad_agent, 809 struct ib_wc *wc); 810 811 /** 812 * ib_create_send_mad - Allocate and initialize a data buffer and work request 813 * for sending a MAD. 814 * @mad_agent: Specifies the registered MAD service to associate with the MAD. 815 * @remote_qpn: Specifies the QPN of the receiving node. 816 * @pkey_index: Specifies which PKey the MAD will be sent using. This field 817 * is valid only if the remote_qpn is QP 1. 818 * @rmpp_active: Indicates if the send will enable RMPP. 819 * @hdr_len: Indicates the size of the data header of the MAD. This length 820 * should include the common MAD header, RMPP header, plus any class 821 * specific header. 822 * @data_len: Indicates the size of any user-transferred data. The call will 823 * automatically adjust the allocated buffer size to account for any 824 * additional padding that may be necessary. 825 * @gfp_mask: GFP mask used for the memory allocation. 826 * @base_version: Base Version of this MAD 827 * 828 * This routine allocates a MAD for sending. The returned MAD send buffer 829 * will reference a data buffer usable for sending a MAD, along 830 * with an initialized work request structure. Users may modify the returned 831 * MAD data buffer before posting the send. 832 * 833 * The returned MAD header, class specific headers, and any padding will be 834 * cleared. Users are responsible for initializing the common MAD header, 835 * any class specific header, and MAD data area. 836 * If @rmpp_active is set, the RMPP header will be initialized for sending. 837 */ 838 struct ib_mad_send_buf *ib_create_send_mad(struct ib_mad_agent *mad_agent, 839 u32 remote_qpn, u16 pkey_index, 840 int rmpp_active, 841 int hdr_len, int data_len, 842 gfp_t gfp_mask, 843 u8 base_version); 844 845 /** 846 * ib_is_mad_class_rmpp - returns whether given management class 847 * supports RMPP. 848 * @mgmt_class: management class 849 * 850 * This routine returns whether the management class supports RMPP. 851 */ 852 int ib_is_mad_class_rmpp(u8 mgmt_class); 853 854 /** 855 * ib_get_mad_data_offset - returns the data offset for a given 856 * management class. 857 * @mgmt_class: management class 858 * 859 * This routine returns the data offset in the MAD for the management 860 * class requested. 861 */ 862 int ib_get_mad_data_offset(u8 mgmt_class); 863 864 /** 865 * ib_get_rmpp_segment - returns the data buffer for a given RMPP segment. 866 * @send_buf: Previously allocated send data buffer. 867 * @seg_num: number of segment to return 868 * 869 * This routine returns a pointer to the data buffer of an RMPP MAD. 870 * Users must provide synchronization to @send_buf around this call. 871 */ 872 void *ib_get_rmpp_segment(struct ib_mad_send_buf *send_buf, int seg_num); 873 874 /** 875 * ib_free_send_mad - Returns data buffers used to send a MAD. 876 * @send_buf: Previously allocated send data buffer. 877 */ 878 void ib_free_send_mad(struct ib_mad_send_buf *send_buf); 879 880 /** 881 * ib_mad_kernel_rmpp_agent - Returns if the agent is performing RMPP. 882 * @agent: the agent in question 883 * @return: true if agent is performing rmpp, false otherwise. 884 */ 885 int ib_mad_kernel_rmpp_agent(const struct ib_mad_agent *agent); 886 887 #endif /* IB_MAD_H */ 888