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.
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:
14 * Redistribution and use in source and binary forms, with or
15 * without modification, are permitted provided that the following
18 * - Redistributions of source code must retain the above
19 * copyright notice, this list of conditions and the following
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.
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
37 #if !defined(IB_MAD_H)
40 #include <linux/list.h>
42 #include <rdma/ib_verbs.h>
44 /* Management base version */
45 #define IB_MGMT_BASE_VERSION 1
47 /* Management classes */
48 #define IB_MGMT_CLASS_SUBN_LID_ROUTED 0x01
49 #define IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE 0x81
50 #define IB_MGMT_CLASS_SUBN_ADM 0x03
51 #define IB_MGMT_CLASS_PERF_MGMT 0x04
52 #define IB_MGMT_CLASS_BM 0x05
53 #define IB_MGMT_CLASS_DEVICE_MGMT 0x06
54 #define IB_MGMT_CLASS_CM 0x07
55 #define IB_MGMT_CLASS_SNMP 0x08
56 #define IB_MGMT_CLASS_DEVICE_ADM 0x10
57 #define IB_MGMT_CLASS_BOOT_MGMT 0x11
58 #define IB_MGMT_CLASS_BIS 0x12
59 #define IB_MGMT_CLASS_CONG_MGMT 0x21
60 #define IB_MGMT_CLASS_VENDOR_RANGE2_START 0x30
61 #define IB_MGMT_CLASS_VENDOR_RANGE2_END 0x4F
63 #define IB_OPENIB_OUI (0x001405)
65 /* Management methods */
66 #define IB_MGMT_METHOD_GET 0x01
67 #define IB_MGMT_METHOD_SET 0x02
68 #define IB_MGMT_METHOD_GET_RESP 0x81
69 #define IB_MGMT_METHOD_SEND 0x03
70 #define IB_MGMT_METHOD_TRAP 0x05
71 #define IB_MGMT_METHOD_REPORT 0x06
72 #define IB_MGMT_METHOD_REPORT_RESP 0x86
73 #define IB_MGMT_METHOD_TRAP_REPRESS 0x07
75 #define IB_MGMT_METHOD_RESP 0x80
76 #define IB_BM_ATTR_MOD_RESP cpu_to_be32(1)
78 #define IB_MGMT_MAX_METHODS 128
80 /* MAD Status field bit masks */
81 #define IB_MGMT_MAD_STATUS_SUCCESS 0x0000
82 #define IB_MGMT_MAD_STATUS_BUSY 0x0001
83 #define IB_MGMT_MAD_STATUS_REDIRECT_REQD 0x0002
84 #define IB_MGMT_MAD_STATUS_BAD_VERSION 0x0004
85 #define IB_MGMT_MAD_STATUS_UNSUPPORTED_METHOD 0x0008
86 #define IB_MGMT_MAD_STATUS_UNSUPPORTED_METHOD_ATTRIB 0x000c
87 #define IB_MGMT_MAD_STATUS_INVALID_ATTRIB_VALUE 0x001c
89 /* RMPP information */
90 #define IB_MGMT_RMPP_VERSION 1
92 #define IB_MGMT_RMPP_TYPE_DATA 1
93 #define IB_MGMT_RMPP_TYPE_ACK 2
94 #define IB_MGMT_RMPP_TYPE_STOP 3
95 #define IB_MGMT_RMPP_TYPE_ABORT 4
97 #define IB_MGMT_RMPP_FLAG_ACTIVE 1
98 #define IB_MGMT_RMPP_FLAG_FIRST (1<<1)
99 #define IB_MGMT_RMPP_FLAG_LAST (1<<2)
101 #define IB_MGMT_RMPP_NO_RESPTIME 0x1F
103 #define IB_MGMT_RMPP_STATUS_SUCCESS 0
104 #define IB_MGMT_RMPP_STATUS_RESX 1
105 #define IB_MGMT_RMPP_STATUS_ABORT_MIN 118
106 #define IB_MGMT_RMPP_STATUS_T2L 118
107 #define IB_MGMT_RMPP_STATUS_BAD_LEN 119
108 #define IB_MGMT_RMPP_STATUS_BAD_SEG 120
109 #define IB_MGMT_RMPP_STATUS_BADT 121
110 #define IB_MGMT_RMPP_STATUS_W2S 122
111 #define IB_MGMT_RMPP_STATUS_S2B 123
112 #define IB_MGMT_RMPP_STATUS_BAD_STATUS 124
113 #define IB_MGMT_RMPP_STATUS_UNV 125
114 #define IB_MGMT_RMPP_STATUS_TMR 126
115 #define IB_MGMT_RMPP_STATUS_UNSPEC 127
116 #define IB_MGMT_RMPP_STATUS_ABORT_MAX 127
119 #define IB_QP1 cpu_to_be32(1)
120 #define IB_QP1_QKEY 0x80010000
121 #define IB_QP_SET_QKEY 0x80000000
123 #define IB_DEFAULT_PKEY_PARTIAL 0x7FFF
124 #define IB_DEFAULT_PKEY_FULL 0xFFFF
127 IB_MGMT_MAD_HDR = 24,
128 IB_MGMT_MAD_DATA = 232,
129 IB_MGMT_RMPP_HDR = 36,
130 IB_MGMT_RMPP_DATA = 220,
131 IB_MGMT_VENDOR_HDR = 40,
132 IB_MGMT_VENDOR_DATA = 216,
134 IB_MGMT_SA_DATA = 200,
135 IB_MGMT_DEVICE_HDR = 64,
136 IB_MGMT_DEVICE_DATA = 192,
145 __be16 class_specific;
158 __be32 paylen_newwin;
161 typedef u64 __bitwise ib_sa_comp_mask;
163 #define IB_SA_COMP_MASK(n) ((__force ib_sa_comp_mask) cpu_to_be64(1ull << (n)))
166 * ib_sa_hdr and ib_sa_mad structures must be packed because they have
167 * 64-bit fields that are only 32-bit aligned. 64-bit architectures will
168 * lay them out wrong otherwise. (And unfortunately they are sent on
169 * the wire so we can't change the layout)
175 ib_sa_comp_mask comp_mask;
176 } __attribute__ ((packed));
179 struct ib_mad_hdr mad_hdr;
180 u8 data[IB_MGMT_MAD_DATA];
184 struct ib_mad_hdr mad_hdr;
185 struct ib_rmpp_hdr rmpp_hdr;
186 u8 data[IB_MGMT_RMPP_DATA];
190 struct ib_mad_hdr mad_hdr;
191 struct ib_rmpp_hdr rmpp_hdr;
192 struct ib_sa_hdr sa_hdr;
193 u8 data[IB_MGMT_SA_DATA];
194 } __attribute__ ((packed));
196 struct ib_vendor_mad {
197 struct ib_mad_hdr mad_hdr;
198 struct ib_rmpp_hdr rmpp_hdr;
201 u8 data[IB_MGMT_VENDOR_DATA];
204 struct ib_class_port_info {
207 __be16 capability_mask;
211 __be32 redirect_tcslfl;
213 __be16 redirect_pkey;
215 __be32 redirect_qkey;
225 * ib_mad_send_buf - MAD data buffer and work request for sends.
226 * @next: A pointer used to chain together MADs for posting.
227 * @mad: References an allocated MAD data buffer for MADs that do not have
228 * RMPP active. For MADs using RMPP, references the common and management
229 * class specific headers.
230 * @mad_agent: MAD agent that allocated the buffer.
231 * @ah: The address handle to use when sending the MAD.
232 * @context: User-controlled context fields.
233 * @hdr_len: Indicates the size of the data header of the MAD. This length
234 * includes the common MAD, RMPP, and class specific headers.
235 * @data_len: Indicates the total size of user-transferred data.
236 * @seg_count: The number of RMPP segments allocated for this send.
237 * @seg_size: Size of each RMPP segment.
238 * @timeout_ms: Time to wait for a response.
239 * @retries: Number of times to retry a request for a response. For MADs
240 * using RMPP, this applies per window. On completion, returns the number
241 * of retries needed to complete the transfer.
243 * Users are responsible for initializing the MAD buffer itself, with the
244 * exception of any RMPP header. Additional segment buffer space allocated
245 * beyond data_len is padding.
247 struct ib_mad_send_buf {
248 struct ib_mad_send_buf *next;
250 struct ib_mad_agent *mad_agent;
262 * ib_response_mad - Returns if the specified MAD has been generated in
263 * response to a sent request or trap.
265 int ib_response_mad(struct ib_mad *mad);
268 * ib_get_rmpp_resptime - Returns the RMPP response time.
269 * @rmpp_hdr: An RMPP header.
271 static inline u8 ib_get_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr)
273 return rmpp_hdr->rmpp_rtime_flags >> 3;
277 * ib_get_rmpp_flags - Returns the RMPP flags.
278 * @rmpp_hdr: An RMPP header.
280 static inline u8 ib_get_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr)
282 return rmpp_hdr->rmpp_rtime_flags & 0x7;
286 * ib_set_rmpp_resptime - Sets the response time in an RMPP header.
287 * @rmpp_hdr: An RMPP header.
288 * @rtime: The response time to set.
290 static inline void ib_set_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr, u8 rtime)
292 rmpp_hdr->rmpp_rtime_flags = ib_get_rmpp_flags(rmpp_hdr) | (rtime << 3);
296 * ib_set_rmpp_flags - Sets the flags in an RMPP header.
297 * @rmpp_hdr: An RMPP header.
298 * @flags: The flags to set.
300 static inline void ib_set_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr, u8 flags)
302 rmpp_hdr->rmpp_rtime_flags = (rmpp_hdr->rmpp_rtime_flags & 0xF8) |
307 struct ib_mad_send_wc;
308 struct ib_mad_recv_wc;
311 * ib_mad_send_handler - callback handler for a sent MAD.
312 * @mad_agent: MAD agent that sent the MAD.
313 * @mad_send_wc: Send work completion information on the sent MAD.
315 typedef void (*ib_mad_send_handler)(struct ib_mad_agent *mad_agent,
316 struct ib_mad_send_wc *mad_send_wc);
319 * ib_mad_snoop_handler - Callback handler for snooping sent MADs.
320 * @mad_agent: MAD agent that snooped the MAD.
321 * @send_wr: Work request information on the sent MAD.
322 * @mad_send_wc: Work completion information on the sent MAD. Valid
323 * only for snooping that occurs on a send completion.
325 * Clients snooping MADs should not modify data referenced by the @send_wr
328 typedef void (*ib_mad_snoop_handler)(struct ib_mad_agent *mad_agent,
329 struct ib_mad_send_buf *send_buf,
330 struct ib_mad_send_wc *mad_send_wc);
333 * ib_mad_recv_handler - callback handler for a received MAD.
334 * @mad_agent: MAD agent requesting the received MAD.
335 * @mad_recv_wc: Received work completion information on the received MAD.
337 * MADs received in response to a send request operation will be handed to
338 * the user before the send operation completes. All data buffers given
339 * to registered agents through this routine are owned by the receiving
340 * client, except for snooping agents. Clients snooping MADs should not
341 * modify the data referenced by @mad_recv_wc.
343 typedef void (*ib_mad_recv_handler)(struct ib_mad_agent *mad_agent,
344 struct ib_mad_recv_wc *mad_recv_wc);
347 * ib_mad_agent - Used to track MAD registration with the access layer.
348 * @device: Reference to device registration is on.
349 * @qp: Reference to QP used for sending and receiving MADs.
350 * @mr: Memory region for system memory usable for DMA.
351 * @recv_handler: Callback handler for a received MAD.
352 * @send_handler: Callback handler for a sent MAD.
353 * @snoop_handler: Callback handler for snooped sent MADs.
354 * @context: User-specified context associated with this registration.
355 * @hi_tid: Access layer assigned transaction ID for this client.
356 * Unsolicited MADs sent by this client will have the upper 32-bits
357 * of their TID set to this value.
358 * @flags: registration flags
359 * @port_num: Port number on which QP is registered
360 * @rmpp_version: If set, indicates the RMPP version used by this agent.
362 struct ib_mad_agent {
363 struct ib_device *device;
366 ib_mad_recv_handler recv_handler;
367 ib_mad_send_handler send_handler;
368 ib_mad_snoop_handler snoop_handler;
377 * ib_mad_send_wc - MAD send completion information.
378 * @send_buf: Send MAD data buffer associated with the send MAD request.
379 * @status: Completion status.
380 * @vendor_err: Optional vendor error information returned with a failed
383 struct ib_mad_send_wc {
384 struct ib_mad_send_buf *send_buf;
385 enum ib_wc_status status;
390 * ib_mad_recv_buf - received MAD buffer information.
391 * @list: Reference to next data buffer for a received RMPP MAD.
392 * @grh: References a data buffer containing the global route header.
393 * The data refereced by this buffer is only valid if the GRH is
395 * @mad: References the start of the received MAD.
397 struct ib_mad_recv_buf {
398 struct list_head list;
404 * ib_mad_recv_wc - received MAD information.
405 * @wc: Completion information for the received data.
406 * @recv_buf: Specifies the location of the received data buffer(s).
407 * @rmpp_list: Specifies a list of RMPP reassembled received MAD buffers.
408 * @mad_len: The length of the received MAD, without duplicated headers.
410 * For received response, the wr_id contains a pointer to the ib_mad_send_buf
411 * for the corresponding send request.
413 struct ib_mad_recv_wc {
415 struct ib_mad_recv_buf recv_buf;
416 struct list_head rmpp_list;
421 * ib_mad_reg_req - MAD registration request
422 * @mgmt_class: Indicates which management class of MADs should be receive
423 * by the caller. This field is only required if the user wishes to
424 * receive unsolicited MADs, otherwise it should be 0.
425 * @mgmt_class_version: Indicates which version of MADs for the given
426 * management class to receive.
427 * @oui: Indicates IEEE OUI when mgmt_class is a vendor class
428 * in the range from 0x30 to 0x4f. Otherwise not used.
429 * @method_mask: The caller will receive unsolicited MADs for any method
430 * where @method_mask = 1.
433 struct ib_mad_reg_req {
435 u8 mgmt_class_version;
437 DECLARE_BITMAP(method_mask, IB_MGMT_MAX_METHODS);
441 * ib_register_mad_agent - Register to send/receive MADs.
442 * @device: The device to register with.
443 * @port_num: The port on the specified device to use.
444 * @qp_type: Specifies which QP to access. Must be either
445 * IB_QPT_SMI or IB_QPT_GSI.
446 * @mad_reg_req: Specifies which unsolicited MADs should be received
447 * by the caller. This parameter may be NULL if the caller only
448 * wishes to receive solicited responses.
449 * @rmpp_version: If set, indicates that the client will send
450 * and receive MADs that contain the RMPP header for the given version.
451 * If set to 0, indicates that RMPP is not used by this client.
452 * @send_handler: The completion callback routine invoked after a send
453 * request has completed.
454 * @recv_handler: The completion callback routine invoked for a received
456 * @context: User specified context associated with the registration.
457 * @registration_flags: Registration flags to set for this agent
459 struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device,
461 enum ib_qp_type qp_type,
462 struct ib_mad_reg_req *mad_reg_req,
464 ib_mad_send_handler send_handler,
465 ib_mad_recv_handler recv_handler,
467 u32 registration_flags);
469 enum ib_mad_snoop_flags {
470 /*IB_MAD_SNOOP_POSTED_SENDS = 1,*/
471 /*IB_MAD_SNOOP_RMPP_SENDS = (1<<1),*/
472 IB_MAD_SNOOP_SEND_COMPLETIONS = (1<<2),
473 /*IB_MAD_SNOOP_RMPP_SEND_COMPLETIONS = (1<<3),*/
474 IB_MAD_SNOOP_RECVS = (1<<4)
475 /*IB_MAD_SNOOP_RMPP_RECVS = (1<<5),*/
476 /*IB_MAD_SNOOP_REDIRECTED_QPS = (1<<6)*/
480 * ib_register_mad_snoop - Register to snoop sent and received MADs.
481 * @device: The device to register with.
482 * @port_num: The port on the specified device to use.
483 * @qp_type: Specifies which QP traffic to snoop. Must be either
484 * IB_QPT_SMI or IB_QPT_GSI.
485 * @mad_snoop_flags: Specifies information where snooping occurs.
486 * @send_handler: The callback routine invoked for a snooped send.
487 * @recv_handler: The callback routine invoked for a snooped receive.
488 * @context: User specified context associated with the registration.
490 struct ib_mad_agent *ib_register_mad_snoop(struct ib_device *device,
492 enum ib_qp_type qp_type,
494 ib_mad_snoop_handler snoop_handler,
495 ib_mad_recv_handler recv_handler,
499 * ib_unregister_mad_agent - Unregisters a client from using MAD services.
500 * @mad_agent: Corresponding MAD registration request to deregister.
502 * After invoking this routine, MAD services are no longer usable by the
503 * client on the associated QP.
505 int ib_unregister_mad_agent(struct ib_mad_agent *mad_agent);
508 * ib_post_send_mad - Posts MAD(s) to the send queue of the QP associated
509 * with the registered client.
510 * @send_buf: Specifies the information needed to send the MAD(s).
511 * @bad_send_buf: Specifies the MAD on which an error was encountered. This
512 * parameter is optional if only a single MAD is posted.
514 * Sent MADs are not guaranteed to complete in the order that they were posted.
516 * If the MAD requires RMPP, the data buffer should contain a single copy
517 * of the common MAD, RMPP, and class specific headers, followed by the class
518 * defined data. If the class defined data would not divide evenly into
519 * RMPP segments, then space must be allocated at the end of the referenced
520 * buffer for any required padding. To indicate the amount of class defined
521 * data being transferred, the paylen_newwin field in the RMPP header should
522 * be set to the size of the class specific header plus the amount of class
523 * defined data being transferred. The paylen_newwin field should be
524 * specified in network-byte order.
526 int ib_post_send_mad(struct ib_mad_send_buf *send_buf,
527 struct ib_mad_send_buf **bad_send_buf);
531 * ib_free_recv_mad - Returns data buffers used to receive a MAD.
532 * @mad_recv_wc: Work completion information for a received MAD.
534 * Clients receiving MADs through their ib_mad_recv_handler must call this
535 * routine to return the work completion buffers to the access layer.
537 void ib_free_recv_mad(struct ib_mad_recv_wc *mad_recv_wc);
540 * ib_cancel_mad - Cancels an outstanding send MAD operation.
541 * @mad_agent: Specifies the registration associated with sent MAD.
542 * @send_buf: Indicates the MAD to cancel.
544 * MADs will be returned to the user through the corresponding
545 * ib_mad_send_handler.
547 void ib_cancel_mad(struct ib_mad_agent *mad_agent,
548 struct ib_mad_send_buf *send_buf);
551 * ib_modify_mad - Modifies an outstanding send MAD operation.
552 * @mad_agent: Specifies the registration associated with sent MAD.
553 * @send_buf: Indicates the MAD to modify.
554 * @timeout_ms: New timeout value for sent MAD.
556 * This call will reset the timeout value for a sent MAD to the specified
559 int ib_modify_mad(struct ib_mad_agent *mad_agent,
560 struct ib_mad_send_buf *send_buf, u32 timeout_ms);
563 * ib_redirect_mad_qp - Registers a QP for MAD services.
564 * @qp: Reference to a QP that requires MAD services.
565 * @rmpp_version: If set, indicates that the client will send
566 * and receive MADs that contain the RMPP header for the given version.
567 * If set to 0, indicates that RMPP is not used by this client.
568 * @send_handler: The completion callback routine invoked after a send
569 * request has completed.
570 * @recv_handler: The completion callback routine invoked for a received
572 * @context: User specified context associated with the registration.
574 * Use of this call allows clients to use MAD services, such as RMPP,
575 * on user-owned QPs. After calling this routine, users may send
576 * MADs on the specified QP by calling ib_mad_post_send.
578 struct ib_mad_agent *ib_redirect_mad_qp(struct ib_qp *qp,
580 ib_mad_send_handler send_handler,
581 ib_mad_recv_handler recv_handler,
585 * ib_process_mad_wc - Processes a work completion associated with a
586 * MAD sent or received on a redirected QP.
587 * @mad_agent: Specifies the registered MAD service using the redirected QP.
588 * @wc: References a work completion associated with a sent or received
591 * This routine is used to complete or continue processing on a MAD request.
592 * If the work completion is associated with a send operation, calling
593 * this routine is required to continue an RMPP transfer or to wait for a
594 * corresponding response, if it is a request. If the work completion is
595 * associated with a receive operation, calling this routine is required to
596 * process an inbound or outbound RMPP transfer, or to match a response MAD
597 * with its corresponding request.
599 int ib_process_mad_wc(struct ib_mad_agent *mad_agent,
603 * ib_create_send_mad - Allocate and initialize a data buffer and work request
605 * @mad_agent: Specifies the registered MAD service to associate with the MAD.
606 * @remote_qpn: Specifies the QPN of the receiving node.
607 * @pkey_index: Specifies which PKey the MAD will be sent using. This field
608 * is valid only if the remote_qpn is QP 1.
609 * @rmpp_active: Indicates if the send will enable RMPP.
610 * @hdr_len: Indicates the size of the data header of the MAD. This length
611 * should include the common MAD header, RMPP header, plus any class
613 * @data_len: Indicates the size of any user-transferred data. The call will
614 * automatically adjust the allocated buffer size to account for any
615 * additional padding that may be necessary.
616 * @gfp_mask: GFP mask used for the memory allocation.
618 * This routine allocates a MAD for sending. The returned MAD send buffer
619 * will reference a data buffer usable for sending a MAD, along
620 * with an initialized work request structure. Users may modify the returned
621 * MAD data buffer before posting the send.
623 * The returned MAD header, class specific headers, and any padding will be
624 * cleared. Users are responsible for initializing the common MAD header,
625 * any class specific header, and MAD data area.
626 * If @rmpp_active is set, the RMPP header will be initialized for sending.
628 struct ib_mad_send_buf *ib_create_send_mad(struct ib_mad_agent *mad_agent,
629 u32 remote_qpn, u16 pkey_index,
631 int hdr_len, int data_len,
635 * ib_is_mad_class_rmpp - returns whether given management class
637 * @mgmt_class: management class
639 * This routine returns whether the management class supports RMPP.
641 int ib_is_mad_class_rmpp(u8 mgmt_class);
644 * ib_get_mad_data_offset - returns the data offset for a given
646 * @mgmt_class: management class
648 * This routine returns the data offset in the MAD for the management
651 int ib_get_mad_data_offset(u8 mgmt_class);
654 * ib_get_rmpp_segment - returns the data buffer for a given RMPP segment.
655 * @send_buf: Previously allocated send data buffer.
656 * @seg_num: number of segment to return
658 * This routine returns a pointer to the data buffer of an RMPP MAD.
659 * Users must provide synchronization to @send_buf around this call.
661 void *ib_get_rmpp_segment(struct ib_mad_send_buf *send_buf, int seg_num);
664 * ib_free_send_mad - Returns data buffers used to send a MAD.
665 * @send_buf: Previously allocated send data buffer.
667 void ib_free_send_mad(struct ib_mad_send_buf *send_buf);
669 #endif /* IB_MAD_H */