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 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 * $Id: ib_mad.h 2775 2005-07-02 13:42:12Z halr $ 37 */ 38 39 #if !defined( IB_MAD_H ) 40 #define IB_MAD_H 41 42 #include <linux/pci.h> 43 44 #include <rdma/ib_verbs.h> 45 46 /* Management base version */ 47 #define IB_MGMT_BASE_VERSION 1 48 49 /* Management classes */ 50 #define IB_MGMT_CLASS_SUBN_LID_ROUTED 0x01 51 #define IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE 0x81 52 #define IB_MGMT_CLASS_SUBN_ADM 0x03 53 #define IB_MGMT_CLASS_PERF_MGMT 0x04 54 #define IB_MGMT_CLASS_BM 0x05 55 #define IB_MGMT_CLASS_DEVICE_MGMT 0x06 56 #define IB_MGMT_CLASS_CM 0x07 57 #define IB_MGMT_CLASS_SNMP 0x08 58 #define IB_MGMT_CLASS_VENDOR_RANGE2_START 0x30 59 #define IB_MGMT_CLASS_VENDOR_RANGE2_END 0x4F 60 61 #define IB_OPENIB_OUI (0x001405) 62 63 /* Management methods */ 64 #define IB_MGMT_METHOD_GET 0x01 65 #define IB_MGMT_METHOD_SET 0x02 66 #define IB_MGMT_METHOD_GET_RESP 0x81 67 #define IB_MGMT_METHOD_SEND 0x03 68 #define IB_MGMT_METHOD_TRAP 0x05 69 #define IB_MGMT_METHOD_REPORT 0x06 70 #define IB_MGMT_METHOD_REPORT_RESP 0x86 71 #define IB_MGMT_METHOD_TRAP_REPRESS 0x07 72 73 #define IB_MGMT_METHOD_RESP 0x80 74 75 #define IB_MGMT_MAX_METHODS 128 76 77 /* RMPP information */ 78 #define IB_MGMT_RMPP_VERSION 1 79 80 #define IB_MGMT_RMPP_TYPE_DATA 1 81 #define IB_MGMT_RMPP_TYPE_ACK 2 82 #define IB_MGMT_RMPP_TYPE_STOP 3 83 #define IB_MGMT_RMPP_TYPE_ABORT 4 84 85 #define IB_MGMT_RMPP_FLAG_ACTIVE 1 86 #define IB_MGMT_RMPP_FLAG_FIRST (1<<1) 87 #define IB_MGMT_RMPP_FLAG_LAST (1<<2) 88 89 #define IB_MGMT_RMPP_NO_RESPTIME 0x1F 90 91 #define IB_MGMT_RMPP_STATUS_SUCCESS 0 92 #define IB_MGMT_RMPP_STATUS_RESX 1 93 #define IB_MGMT_RMPP_STATUS_ABORT_MIN 118 94 #define IB_MGMT_RMPP_STATUS_T2L 118 95 #define IB_MGMT_RMPP_STATUS_BAD_LEN 119 96 #define IB_MGMT_RMPP_STATUS_BAD_SEG 120 97 #define IB_MGMT_RMPP_STATUS_BADT 121 98 #define IB_MGMT_RMPP_STATUS_W2S 122 99 #define IB_MGMT_RMPP_STATUS_S2B 123 100 #define IB_MGMT_RMPP_STATUS_BAD_STATUS 124 101 #define IB_MGMT_RMPP_STATUS_UNV 125 102 #define IB_MGMT_RMPP_STATUS_TMR 126 103 #define IB_MGMT_RMPP_STATUS_UNSPEC 127 104 #define IB_MGMT_RMPP_STATUS_ABORT_MAX 127 105 106 #define IB_QP0 0 107 #define IB_QP1 __constant_htonl(1) 108 #define IB_QP1_QKEY 0x80010000 109 #define IB_QP_SET_QKEY 0x80000000 110 111 struct ib_mad_hdr { 112 u8 base_version; 113 u8 mgmt_class; 114 u8 class_version; 115 u8 method; 116 __be16 status; 117 __be16 class_specific; 118 __be64 tid; 119 __be16 attr_id; 120 __be16 resv; 121 __be32 attr_mod; 122 }; 123 124 struct ib_rmpp_hdr { 125 u8 rmpp_version; 126 u8 rmpp_type; 127 u8 rmpp_rtime_flags; 128 u8 rmpp_status; 129 __be32 seg_num; 130 __be32 paylen_newwin; 131 }; 132 133 typedef u64 __bitwise ib_sa_comp_mask; 134 135 #define IB_SA_COMP_MASK(n) ((__force ib_sa_comp_mask) cpu_to_be64(1ull << n)) 136 137 /* 138 * ib_sa_hdr and ib_sa_mad structures must be packed because they have 139 * 64-bit fields that are only 32-bit aligned. 64-bit architectures will 140 * lay them out wrong otherwise. (And unfortunately they are sent on 141 * the wire so we can't change the layout) 142 */ 143 struct ib_sa_hdr { 144 __be64 sm_key; 145 __be16 attr_offset; 146 __be16 reserved; 147 ib_sa_comp_mask comp_mask; 148 } __attribute__ ((packed)); 149 150 struct ib_mad { 151 struct ib_mad_hdr mad_hdr; 152 u8 data[232]; 153 }; 154 155 struct ib_rmpp_mad { 156 struct ib_mad_hdr mad_hdr; 157 struct ib_rmpp_hdr rmpp_hdr; 158 u8 data[220]; 159 }; 160 161 struct ib_sa_mad { 162 struct ib_mad_hdr mad_hdr; 163 struct ib_rmpp_hdr rmpp_hdr; 164 struct ib_sa_hdr sa_hdr; 165 u8 data[200]; 166 } __attribute__ ((packed)); 167 168 struct ib_vendor_mad { 169 struct ib_mad_hdr mad_hdr; 170 struct ib_rmpp_hdr rmpp_hdr; 171 u8 reserved; 172 u8 oui[3]; 173 u8 data[216]; 174 }; 175 176 /** 177 * ib_mad_send_buf - MAD data buffer and work request for sends. 178 * @mad: References an allocated MAD data buffer. The size of the data 179 * buffer is specified in the @send_wr.length field. 180 * @mapping: DMA mapping information. 181 * @mad_agent: MAD agent that allocated the buffer. 182 * @context: User-controlled context fields. 183 * @send_wr: An initialized work request structure used when sending the MAD. 184 * The wr_id field of the work request is initialized to reference this 185 * data structure. 186 * @sge: A scatter-gather list referenced by the work request. 187 * 188 * Users are responsible for initializing the MAD buffer itself, with the 189 * exception of specifying the payload length field in any RMPP MAD. 190 */ 191 struct ib_mad_send_buf { 192 struct ib_mad *mad; 193 DECLARE_PCI_UNMAP_ADDR(mapping) 194 struct ib_mad_agent *mad_agent; 195 void *context[2]; 196 struct ib_send_wr send_wr; 197 struct ib_sge sge; 198 }; 199 200 /** 201 * ib_get_rmpp_resptime - Returns the RMPP response time. 202 * @rmpp_hdr: An RMPP header. 203 */ 204 static inline u8 ib_get_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr) 205 { 206 return rmpp_hdr->rmpp_rtime_flags >> 3; 207 } 208 209 /** 210 * ib_get_rmpp_flags - Returns the RMPP flags. 211 * @rmpp_hdr: An RMPP header. 212 */ 213 static inline u8 ib_get_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr) 214 { 215 return rmpp_hdr->rmpp_rtime_flags & 0x7; 216 } 217 218 /** 219 * ib_set_rmpp_resptime - Sets the response time in an RMPP header. 220 * @rmpp_hdr: An RMPP header. 221 * @rtime: The response time to set. 222 */ 223 static inline void ib_set_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr, u8 rtime) 224 { 225 rmpp_hdr->rmpp_rtime_flags = ib_get_rmpp_flags(rmpp_hdr) | (rtime << 3); 226 } 227 228 /** 229 * ib_set_rmpp_flags - Sets the flags in an RMPP header. 230 * @rmpp_hdr: An RMPP header. 231 * @flags: The flags to set. 232 */ 233 static inline void ib_set_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr, u8 flags) 234 { 235 rmpp_hdr->rmpp_rtime_flags = (rmpp_hdr->rmpp_rtime_flags & 0xF1) | 236 (flags & 0x7); 237 } 238 239 struct ib_mad_agent; 240 struct ib_mad_send_wc; 241 struct ib_mad_recv_wc; 242 243 /** 244 * ib_mad_send_handler - callback handler for a sent MAD. 245 * @mad_agent: MAD agent that sent the MAD. 246 * @mad_send_wc: Send work completion information on the sent MAD. 247 */ 248 typedef void (*ib_mad_send_handler)(struct ib_mad_agent *mad_agent, 249 struct ib_mad_send_wc *mad_send_wc); 250 251 /** 252 * ib_mad_snoop_handler - Callback handler for snooping sent MADs. 253 * @mad_agent: MAD agent that snooped the MAD. 254 * @send_wr: Work request information on the sent MAD. 255 * @mad_send_wc: Work completion information on the sent MAD. Valid 256 * only for snooping that occurs on a send completion. 257 * 258 * Clients snooping MADs should not modify data referenced by the @send_wr 259 * or @mad_send_wc. 260 */ 261 typedef void (*ib_mad_snoop_handler)(struct ib_mad_agent *mad_agent, 262 struct ib_send_wr *send_wr, 263 struct ib_mad_send_wc *mad_send_wc); 264 265 /** 266 * ib_mad_recv_handler - callback handler for a received MAD. 267 * @mad_agent: MAD agent requesting the received MAD. 268 * @mad_recv_wc: Received work completion information on the received MAD. 269 * 270 * MADs received in response to a send request operation will be handed to 271 * the user after the send operation completes. All data buffers given 272 * to registered agents through this routine are owned by the receiving 273 * client, except for snooping agents. Clients snooping MADs should not 274 * modify the data referenced by @mad_recv_wc. 275 */ 276 typedef void (*ib_mad_recv_handler)(struct ib_mad_agent *mad_agent, 277 struct ib_mad_recv_wc *mad_recv_wc); 278 279 /** 280 * ib_mad_agent - Used to track MAD registration with the access layer. 281 * @device: Reference to device registration is on. 282 * @qp: Reference to QP used for sending and receiving MADs. 283 * @mr: Memory region for system memory usable for DMA. 284 * @recv_handler: Callback handler for a received MAD. 285 * @send_handler: Callback handler for a sent MAD. 286 * @snoop_handler: Callback handler for snooped sent MADs. 287 * @context: User-specified context associated with this registration. 288 * @hi_tid: Access layer assigned transaction ID for this client. 289 * Unsolicited MADs sent by this client will have the upper 32-bits 290 * of their TID set to this value. 291 * @port_num: Port number on which QP is registered 292 * @rmpp_version: If set, indicates the RMPP version used by this agent. 293 */ 294 struct ib_mad_agent { 295 struct ib_device *device; 296 struct ib_qp *qp; 297 struct ib_mr *mr; 298 ib_mad_recv_handler recv_handler; 299 ib_mad_send_handler send_handler; 300 ib_mad_snoop_handler snoop_handler; 301 void *context; 302 u32 hi_tid; 303 u8 port_num; 304 u8 rmpp_version; 305 }; 306 307 /** 308 * ib_mad_send_wc - MAD send completion information. 309 * @wr_id: Work request identifier associated with the send MAD request. 310 * @status: Completion status. 311 * @vendor_err: Optional vendor error information returned with a failed 312 * request. 313 */ 314 struct ib_mad_send_wc { 315 u64 wr_id; 316 enum ib_wc_status status; 317 u32 vendor_err; 318 }; 319 320 /** 321 * ib_mad_recv_buf - received MAD buffer information. 322 * @list: Reference to next data buffer for a received RMPP MAD. 323 * @grh: References a data buffer containing the global route header. 324 * The data refereced by this buffer is only valid if the GRH is 325 * valid. 326 * @mad: References the start of the received MAD. 327 */ 328 struct ib_mad_recv_buf { 329 struct list_head list; 330 struct ib_grh *grh; 331 struct ib_mad *mad; 332 }; 333 334 /** 335 * ib_mad_recv_wc - received MAD information. 336 * @wc: Completion information for the received data. 337 * @recv_buf: Specifies the location of the received data buffer(s). 338 * @rmpp_list: Specifies a list of RMPP reassembled received MAD buffers. 339 * @mad_len: The length of the received MAD, without duplicated headers. 340 * 341 * For received response, the wr_id field of the wc is set to the wr_id 342 * for the corresponding send request. 343 */ 344 struct ib_mad_recv_wc { 345 struct ib_wc *wc; 346 struct ib_mad_recv_buf recv_buf; 347 struct list_head rmpp_list; 348 int mad_len; 349 }; 350 351 /** 352 * ib_mad_reg_req - MAD registration request 353 * @mgmt_class: Indicates which management class of MADs should be receive 354 * by the caller. This field is only required if the user wishes to 355 * receive unsolicited MADs, otherwise it should be 0. 356 * @mgmt_class_version: Indicates which version of MADs for the given 357 * management class to receive. 358 * @oui: Indicates IEEE OUI when mgmt_class is a vendor class 359 * in the range from 0x30 to 0x4f. Otherwise not used. 360 * @method_mask: The caller will receive unsolicited MADs for any method 361 * where @method_mask = 1. 362 */ 363 struct ib_mad_reg_req { 364 u8 mgmt_class; 365 u8 mgmt_class_version; 366 u8 oui[3]; 367 DECLARE_BITMAP(method_mask, IB_MGMT_MAX_METHODS); 368 }; 369 370 /** 371 * ib_register_mad_agent - Register to send/receive MADs. 372 * @device: The device to register with. 373 * @port_num: The port on the specified device to use. 374 * @qp_type: Specifies which QP to access. Must be either 375 * IB_QPT_SMI or IB_QPT_GSI. 376 * @mad_reg_req: Specifies which unsolicited MADs should be received 377 * by the caller. This parameter may be NULL if the caller only 378 * wishes to receive solicited responses. 379 * @rmpp_version: If set, indicates that the client will send 380 * and receive MADs that contain the RMPP header for the given version. 381 * If set to 0, indicates that RMPP is not used by this client. 382 * @send_handler: The completion callback routine invoked after a send 383 * request has completed. 384 * @recv_handler: The completion callback routine invoked for a received 385 * MAD. 386 * @context: User specified context associated with the registration. 387 */ 388 struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device, 389 u8 port_num, 390 enum ib_qp_type qp_type, 391 struct ib_mad_reg_req *mad_reg_req, 392 u8 rmpp_version, 393 ib_mad_send_handler send_handler, 394 ib_mad_recv_handler recv_handler, 395 void *context); 396 397 enum ib_mad_snoop_flags { 398 /*IB_MAD_SNOOP_POSTED_SENDS = 1,*/ 399 /*IB_MAD_SNOOP_RMPP_SENDS = (1<<1),*/ 400 IB_MAD_SNOOP_SEND_COMPLETIONS = (1<<2), 401 /*IB_MAD_SNOOP_RMPP_SEND_COMPLETIONS = (1<<3),*/ 402 IB_MAD_SNOOP_RECVS = (1<<4) 403 /*IB_MAD_SNOOP_RMPP_RECVS = (1<<5),*/ 404 /*IB_MAD_SNOOP_REDIRECTED_QPS = (1<<6)*/ 405 }; 406 407 /** 408 * ib_register_mad_snoop - Register to snoop sent and received MADs. 409 * @device: The device to register with. 410 * @port_num: The port on the specified device to use. 411 * @qp_type: Specifies which QP traffic to snoop. Must be either 412 * IB_QPT_SMI or IB_QPT_GSI. 413 * @mad_snoop_flags: Specifies information where snooping occurs. 414 * @send_handler: The callback routine invoked for a snooped send. 415 * @recv_handler: The callback routine invoked for a snooped receive. 416 * @context: User specified context associated with the registration. 417 */ 418 struct ib_mad_agent *ib_register_mad_snoop(struct ib_device *device, 419 u8 port_num, 420 enum ib_qp_type qp_type, 421 int mad_snoop_flags, 422 ib_mad_snoop_handler snoop_handler, 423 ib_mad_recv_handler recv_handler, 424 void *context); 425 426 /** 427 * ib_unregister_mad_agent - Unregisters a client from using MAD services. 428 * @mad_agent: Corresponding MAD registration request to deregister. 429 * 430 * After invoking this routine, MAD services are no longer usable by the 431 * client on the associated QP. 432 */ 433 int ib_unregister_mad_agent(struct ib_mad_agent *mad_agent); 434 435 /** 436 * ib_post_send_mad - Posts MAD(s) to the send queue of the QP associated 437 * with the registered client. 438 * @mad_agent: Specifies the associated registration to post the send to. 439 * @send_wr: Specifies the information needed to send the MAD(s). 440 * @bad_send_wr: Specifies the MAD on which an error was encountered. 441 * 442 * Sent MADs are not guaranteed to complete in the order that they were posted. 443 * 444 * If the MAD requires RMPP, the data buffer should contain a single copy 445 * of the common MAD, RMPP, and class specific headers, followed by the class 446 * defined data. If the class defined data would not divide evenly into 447 * RMPP segments, then space must be allocated at the end of the referenced 448 * buffer for any required padding. To indicate the amount of class defined 449 * data being transferred, the paylen_newwin field in the RMPP header should 450 * be set to the size of the class specific header plus the amount of class 451 * defined data being transferred. The paylen_newwin field should be 452 * specified in network-byte order. 453 */ 454 int ib_post_send_mad(struct ib_mad_agent *mad_agent, 455 struct ib_send_wr *send_wr, 456 struct ib_send_wr **bad_send_wr); 457 458 /** 459 * ib_coalesce_recv_mad - Coalesces received MAD data into a single buffer. 460 * @mad_recv_wc: Work completion information for a received MAD. 461 * @buf: User-provided data buffer to receive the coalesced buffers. The 462 * referenced buffer should be at least the size of the mad_len specified 463 * by @mad_recv_wc. 464 * 465 * This call copies a chain of received MAD segments into a single data buffer, 466 * removing duplicated headers. 467 */ 468 void ib_coalesce_recv_mad(struct ib_mad_recv_wc *mad_recv_wc, void *buf); 469 470 /** 471 * ib_free_recv_mad - Returns data buffers used to receive a MAD. 472 * @mad_recv_wc: Work completion information for a received MAD. 473 * 474 * Clients receiving MADs through their ib_mad_recv_handler must call this 475 * routine to return the work completion buffers to the access layer. 476 */ 477 void ib_free_recv_mad(struct ib_mad_recv_wc *mad_recv_wc); 478 479 /** 480 * ib_cancel_mad - Cancels an outstanding send MAD operation. 481 * @mad_agent: Specifies the registration associated with sent MAD. 482 * @wr_id: Indicates the work request identifier of the MAD to cancel. 483 * 484 * MADs will be returned to the user through the corresponding 485 * ib_mad_send_handler. 486 */ 487 void ib_cancel_mad(struct ib_mad_agent *mad_agent, u64 wr_id); 488 489 /** 490 * ib_modify_mad - Modifies an outstanding send MAD operation. 491 * @mad_agent: Specifies the registration associated with sent MAD. 492 * @wr_id: Indicates the work request identifier of the MAD to modify. 493 * @timeout_ms: New timeout value for sent MAD. 494 * 495 * This call will reset the timeout value for a sent MAD to the specified 496 * value. 497 */ 498 int ib_modify_mad(struct ib_mad_agent *mad_agent, u64 wr_id, u32 timeout_ms); 499 500 /** 501 * ib_redirect_mad_qp - Registers a QP for MAD services. 502 * @qp: Reference to a QP that requires MAD services. 503 * @rmpp_version: If set, indicates that the client will send 504 * and receive MADs that contain the RMPP header for the given version. 505 * If set to 0, indicates that RMPP is not used by this client. 506 * @send_handler: The completion callback routine invoked after a send 507 * request has completed. 508 * @recv_handler: The completion callback routine invoked for a received 509 * MAD. 510 * @context: User specified context associated with the registration. 511 * 512 * Use of this call allows clients to use MAD services, such as RMPP, 513 * on user-owned QPs. After calling this routine, users may send 514 * MADs on the specified QP by calling ib_mad_post_send. 515 */ 516 struct ib_mad_agent *ib_redirect_mad_qp(struct ib_qp *qp, 517 u8 rmpp_version, 518 ib_mad_send_handler send_handler, 519 ib_mad_recv_handler recv_handler, 520 void *context); 521 522 /** 523 * ib_process_mad_wc - Processes a work completion associated with a 524 * MAD sent or received on a redirected QP. 525 * @mad_agent: Specifies the registered MAD service using the redirected QP. 526 * @wc: References a work completion associated with a sent or received 527 * MAD segment. 528 * 529 * This routine is used to complete or continue processing on a MAD request. 530 * If the work completion is associated with a send operation, calling 531 * this routine is required to continue an RMPP transfer or to wait for a 532 * corresponding response, if it is a request. If the work completion is 533 * associated with a receive operation, calling this routine is required to 534 * process an inbound or outbound RMPP transfer, or to match a response MAD 535 * with its corresponding request. 536 */ 537 int ib_process_mad_wc(struct ib_mad_agent *mad_agent, 538 struct ib_wc *wc); 539 540 /** 541 * ib_create_send_mad - Allocate and initialize a data buffer and work request 542 * for sending a MAD. 543 * @mad_agent: Specifies the registered MAD service to associate with the MAD. 544 * @remote_qpn: Specifies the QPN of the receiving node. 545 * @pkey_index: Specifies which PKey the MAD will be sent using. This field 546 * is valid only if the remote_qpn is QP 1. 547 * @ah: References the address handle used to transfer to the remote node. 548 * @rmpp_active: Indicates if the send will enable RMPP. 549 * @hdr_len: Indicates the size of the data header of the MAD. This length 550 * should include the common MAD header, RMPP header, plus any class 551 * specific header. 552 * @data_len: Indicates the size of any user-transferred data. The call will 553 * automatically adjust the allocated buffer size to account for any 554 * additional padding that may be necessary. 555 * @gfp_mask: GFP mask used for the memory allocation. 556 * 557 * This is a helper routine that may be used to allocate a MAD. Users are 558 * not required to allocate outbound MADs using this call. The returned 559 * MAD send buffer will reference a data buffer usable for sending a MAD, along 560 * with an initialized work request structure. Users may modify the returned 561 * MAD data buffer or work request before posting the send. 562 * 563 * The returned data buffer will be cleared. Users are responsible for 564 * initializing the common MAD and any class specific headers. If @rmpp_active 565 * is set, the RMPP header will be initialized for sending. 566 */ 567 struct ib_mad_send_buf * ib_create_send_mad(struct ib_mad_agent *mad_agent, 568 u32 remote_qpn, u16 pkey_index, 569 struct ib_ah *ah, int rmpp_active, 570 int hdr_len, int data_len, 571 unsigned int __nocast gfp_mask); 572 573 /** 574 * ib_free_send_mad - Returns data buffers used to send a MAD. 575 * @send_buf: Previously allocated send data buffer. 576 */ 577 void ib_free_send_mad(struct ib_mad_send_buf *send_buf); 578 579 #endif /* IB_MAD_H */ 580