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
36 * $Id: ib_mad.h 5596 2006-03-03 01:00:07Z sean.hefty $
39 #if !defined( IB_MAD_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 /* RMPP information */
81 #define IB_MGMT_RMPP_VERSION 1
83 #define IB_MGMT_RMPP_TYPE_DATA 1
84 #define IB_MGMT_RMPP_TYPE_ACK 2
85 #define IB_MGMT_RMPP_TYPE_STOP 3
86 #define IB_MGMT_RMPP_TYPE_ABORT 4
88 #define IB_MGMT_RMPP_FLAG_ACTIVE 1
89 #define IB_MGMT_RMPP_FLAG_FIRST (1<<1)
90 #define IB_MGMT_RMPP_FLAG_LAST (1<<2)
92 #define IB_MGMT_RMPP_NO_RESPTIME 0x1F
94 #define IB_MGMT_RMPP_STATUS_SUCCESS 0
95 #define IB_MGMT_RMPP_STATUS_RESX 1
96 #define IB_MGMT_RMPP_STATUS_ABORT_MIN 118
97 #define IB_MGMT_RMPP_STATUS_T2L 118
98 #define IB_MGMT_RMPP_STATUS_BAD_LEN 119
99 #define IB_MGMT_RMPP_STATUS_BAD_SEG 120
100 #define IB_MGMT_RMPP_STATUS_BADT 121
101 #define IB_MGMT_RMPP_STATUS_W2S 122
102 #define IB_MGMT_RMPP_STATUS_S2B 123
103 #define IB_MGMT_RMPP_STATUS_BAD_STATUS 124
104 #define IB_MGMT_RMPP_STATUS_UNV 125
105 #define IB_MGMT_RMPP_STATUS_TMR 126
106 #define IB_MGMT_RMPP_STATUS_UNSPEC 127
107 #define IB_MGMT_RMPP_STATUS_ABORT_MAX 127
110 #define IB_QP1 __constant_htonl(1)
111 #define IB_QP1_QKEY 0x80010000
112 #define IB_QP_SET_QKEY 0x80000000
114 #define IB_DEFAULT_PKEY_PARTIAL 0x7FFF
115 #define IB_DEFAULT_PKEY_FULL 0xFFFF
118 IB_MGMT_MAD_HDR = 24,
119 IB_MGMT_MAD_DATA = 232,
120 IB_MGMT_RMPP_HDR = 36,
121 IB_MGMT_RMPP_DATA = 220,
122 IB_MGMT_VENDOR_HDR = 40,
123 IB_MGMT_VENDOR_DATA = 216,
125 IB_MGMT_SA_DATA = 200,
126 IB_MGMT_DEVICE_HDR = 64,
127 IB_MGMT_DEVICE_DATA = 192,
136 __be16 class_specific;
149 __be32 paylen_newwin;
152 typedef u64 __bitwise ib_sa_comp_mask;
154 #define IB_SA_COMP_MASK(n) ((__force ib_sa_comp_mask) cpu_to_be64(1ull << n))
157 * ib_sa_hdr and ib_sa_mad structures must be packed because they have
158 * 64-bit fields that are only 32-bit aligned. 64-bit architectures will
159 * lay them out wrong otherwise. (And unfortunately they are sent on
160 * the wire so we can't change the layout)
166 ib_sa_comp_mask comp_mask;
167 } __attribute__ ((packed));
170 struct ib_mad_hdr mad_hdr;
171 u8 data[IB_MGMT_MAD_DATA];
175 struct ib_mad_hdr mad_hdr;
176 struct ib_rmpp_hdr rmpp_hdr;
177 u8 data[IB_MGMT_RMPP_DATA];
181 struct ib_mad_hdr mad_hdr;
182 struct ib_rmpp_hdr rmpp_hdr;
183 struct ib_sa_hdr sa_hdr;
184 u8 data[IB_MGMT_SA_DATA];
185 } __attribute__ ((packed));
187 struct ib_vendor_mad {
188 struct ib_mad_hdr mad_hdr;
189 struct ib_rmpp_hdr rmpp_hdr;
192 u8 data[IB_MGMT_VENDOR_DATA];
195 struct ib_class_port_info
199 __be16 capability_mask;
203 __be32 redirect_tcslfl;
205 __be16 redirect_pkey;
207 __be32 redirect_qkey;
217 * ib_mad_send_buf - MAD data buffer and work request for sends.
218 * @next: A pointer used to chain together MADs for posting.
219 * @mad: References an allocated MAD data buffer for MADs that do not have
220 * RMPP active. For MADs using RMPP, references the common and management
221 * class specific headers.
222 * @mad_agent: MAD agent that allocated the buffer.
223 * @ah: The address handle to use when sending the MAD.
224 * @context: User-controlled context fields.
225 * @hdr_len: Indicates the size of the data header of the MAD. This length
226 * includes the common MAD, RMPP, and class specific headers.
227 * @data_len: Indicates the total size of user-transferred data.
228 * @seg_count: The number of RMPP segments allocated for this send.
229 * @seg_size: Size of each RMPP segment.
230 * @timeout_ms: Time to wait for a response.
231 * @retries: Number of times to retry a request for a response.
233 * Users are responsible for initializing the MAD buffer itself, with the
234 * exception of any RMPP header. Additional segment buffer space allocated
235 * beyond data_len is padding.
237 struct ib_mad_send_buf {
238 struct ib_mad_send_buf *next;
240 struct ib_mad_agent *mad_agent;
252 * ib_response_mad - Returns if the specified MAD has been generated in
253 * response to a sent request or trap.
255 int ib_response_mad(struct ib_mad *mad);
258 * ib_get_rmpp_resptime - Returns the RMPP response time.
259 * @rmpp_hdr: An RMPP header.
261 static inline u8 ib_get_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr)
263 return rmpp_hdr->rmpp_rtime_flags >> 3;
267 * ib_get_rmpp_flags - Returns the RMPP flags.
268 * @rmpp_hdr: An RMPP header.
270 static inline u8 ib_get_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr)
272 return rmpp_hdr->rmpp_rtime_flags & 0x7;
276 * ib_set_rmpp_resptime - Sets the response time in an RMPP header.
277 * @rmpp_hdr: An RMPP header.
278 * @rtime: The response time to set.
280 static inline void ib_set_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr, u8 rtime)
282 rmpp_hdr->rmpp_rtime_flags = ib_get_rmpp_flags(rmpp_hdr) | (rtime << 3);
286 * ib_set_rmpp_flags - Sets the flags in an RMPP header.
287 * @rmpp_hdr: An RMPP header.
288 * @flags: The flags to set.
290 static inline void ib_set_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr, u8 flags)
292 rmpp_hdr->rmpp_rtime_flags = (rmpp_hdr->rmpp_rtime_flags & 0xF1) |
297 struct ib_mad_send_wc;
298 struct ib_mad_recv_wc;
301 * ib_mad_send_handler - callback handler for a sent MAD.
302 * @mad_agent: MAD agent that sent the MAD.
303 * @mad_send_wc: Send work completion information on the sent MAD.
305 typedef void (*ib_mad_send_handler)(struct ib_mad_agent *mad_agent,
306 struct ib_mad_send_wc *mad_send_wc);
309 * ib_mad_snoop_handler - Callback handler for snooping sent MADs.
310 * @mad_agent: MAD agent that snooped the MAD.
311 * @send_wr: Work request information on the sent MAD.
312 * @mad_send_wc: Work completion information on the sent MAD. Valid
313 * only for snooping that occurs on a send completion.
315 * Clients snooping MADs should not modify data referenced by the @send_wr
318 typedef void (*ib_mad_snoop_handler)(struct ib_mad_agent *mad_agent,
319 struct ib_mad_send_buf *send_buf,
320 struct ib_mad_send_wc *mad_send_wc);
323 * ib_mad_recv_handler - callback handler for a received MAD.
324 * @mad_agent: MAD agent requesting the received MAD.
325 * @mad_recv_wc: Received work completion information on the received MAD.
327 * MADs received in response to a send request operation will be handed to
328 * the user before the send operation completes. All data buffers given
329 * to registered agents through this routine are owned by the receiving
330 * client, except for snooping agents. Clients snooping MADs should not
331 * modify the data referenced by @mad_recv_wc.
333 typedef void (*ib_mad_recv_handler)(struct ib_mad_agent *mad_agent,
334 struct ib_mad_recv_wc *mad_recv_wc);
337 * ib_mad_agent - Used to track MAD registration with the access layer.
338 * @device: Reference to device registration is on.
339 * @qp: Reference to QP used for sending and receiving MADs.
340 * @mr: Memory region for system memory usable for DMA.
341 * @recv_handler: Callback handler for a received MAD.
342 * @send_handler: Callback handler for a sent MAD.
343 * @snoop_handler: Callback handler for snooped sent MADs.
344 * @context: User-specified context associated with this registration.
345 * @hi_tid: Access layer assigned transaction ID for this client.
346 * Unsolicited MADs sent by this client will have the upper 32-bits
347 * of their TID set to this value.
348 * @port_num: Port number on which QP is registered
349 * @rmpp_version: If set, indicates the RMPP version used by this agent.
351 struct ib_mad_agent {
352 struct ib_device *device;
355 ib_mad_recv_handler recv_handler;
356 ib_mad_send_handler send_handler;
357 ib_mad_snoop_handler snoop_handler;
365 * ib_mad_send_wc - MAD send completion information.
366 * @send_buf: Send MAD data buffer associated with the send MAD request.
367 * @status: Completion status.
368 * @vendor_err: Optional vendor error information returned with a failed
371 struct ib_mad_send_wc {
372 struct ib_mad_send_buf *send_buf;
373 enum ib_wc_status status;
378 * ib_mad_recv_buf - received MAD buffer information.
379 * @list: Reference to next data buffer for a received RMPP MAD.
380 * @grh: References a data buffer containing the global route header.
381 * The data refereced by this buffer is only valid if the GRH is
383 * @mad: References the start of the received MAD.
385 struct ib_mad_recv_buf {
386 struct list_head list;
392 * ib_mad_recv_wc - received MAD information.
393 * @wc: Completion information for the received data.
394 * @recv_buf: Specifies the location of the received data buffer(s).
395 * @rmpp_list: Specifies a list of RMPP reassembled received MAD buffers.
396 * @mad_len: The length of the received MAD, without duplicated headers.
398 * For received response, the wr_id contains a pointer to the ib_mad_send_buf
399 * for the corresponding send request.
401 struct ib_mad_recv_wc {
403 struct ib_mad_recv_buf recv_buf;
404 struct list_head rmpp_list;
409 * ib_mad_reg_req - MAD registration request
410 * @mgmt_class: Indicates which management class of MADs should be receive
411 * by the caller. This field is only required if the user wishes to
412 * receive unsolicited MADs, otherwise it should be 0.
413 * @mgmt_class_version: Indicates which version of MADs for the given
414 * management class to receive.
415 * @oui: Indicates IEEE OUI when mgmt_class is a vendor class
416 * in the range from 0x30 to 0x4f. Otherwise not used.
417 * @method_mask: The caller will receive unsolicited MADs for any method
418 * where @method_mask = 1.
420 struct ib_mad_reg_req {
422 u8 mgmt_class_version;
424 DECLARE_BITMAP(method_mask, IB_MGMT_MAX_METHODS);
428 * ib_register_mad_agent - Register to send/receive MADs.
429 * @device: The device to register with.
430 * @port_num: The port on the specified device to use.
431 * @qp_type: Specifies which QP to access. Must be either
432 * IB_QPT_SMI or IB_QPT_GSI.
433 * @mad_reg_req: Specifies which unsolicited MADs should be received
434 * by the caller. This parameter may be NULL if the caller only
435 * wishes to receive solicited responses.
436 * @rmpp_version: If set, indicates that the client will send
437 * and receive MADs that contain the RMPP header for the given version.
438 * If set to 0, indicates that RMPP is not used by this client.
439 * @send_handler: The completion callback routine invoked after a send
440 * request has completed.
441 * @recv_handler: The completion callback routine invoked for a received
443 * @context: User specified context associated with the registration.
445 struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device,
447 enum ib_qp_type qp_type,
448 struct ib_mad_reg_req *mad_reg_req,
450 ib_mad_send_handler send_handler,
451 ib_mad_recv_handler recv_handler,
454 enum ib_mad_snoop_flags {
455 /*IB_MAD_SNOOP_POSTED_SENDS = 1,*/
456 /*IB_MAD_SNOOP_RMPP_SENDS = (1<<1),*/
457 IB_MAD_SNOOP_SEND_COMPLETIONS = (1<<2),
458 /*IB_MAD_SNOOP_RMPP_SEND_COMPLETIONS = (1<<3),*/
459 IB_MAD_SNOOP_RECVS = (1<<4)
460 /*IB_MAD_SNOOP_RMPP_RECVS = (1<<5),*/
461 /*IB_MAD_SNOOP_REDIRECTED_QPS = (1<<6)*/
465 * ib_register_mad_snoop - Register to snoop sent and received MADs.
466 * @device: The device to register with.
467 * @port_num: The port on the specified device to use.
468 * @qp_type: Specifies which QP traffic to snoop. Must be either
469 * IB_QPT_SMI or IB_QPT_GSI.
470 * @mad_snoop_flags: Specifies information where snooping occurs.
471 * @send_handler: The callback routine invoked for a snooped send.
472 * @recv_handler: The callback routine invoked for a snooped receive.
473 * @context: User specified context associated with the registration.
475 struct ib_mad_agent *ib_register_mad_snoop(struct ib_device *device,
477 enum ib_qp_type qp_type,
479 ib_mad_snoop_handler snoop_handler,
480 ib_mad_recv_handler recv_handler,
484 * ib_unregister_mad_agent - Unregisters a client from using MAD services.
485 * @mad_agent: Corresponding MAD registration request to deregister.
487 * After invoking this routine, MAD services are no longer usable by the
488 * client on the associated QP.
490 int ib_unregister_mad_agent(struct ib_mad_agent *mad_agent);
493 * ib_post_send_mad - Posts MAD(s) to the send queue of the QP associated
494 * with the registered client.
495 * @send_buf: Specifies the information needed to send the MAD(s).
496 * @bad_send_buf: Specifies the MAD on which an error was encountered. This
497 * parameter is optional if only a single MAD is posted.
499 * Sent MADs are not guaranteed to complete in the order that they were posted.
501 * If the MAD requires RMPP, the data buffer should contain a single copy
502 * of the common MAD, RMPP, and class specific headers, followed by the class
503 * defined data. If the class defined data would not divide evenly into
504 * RMPP segments, then space must be allocated at the end of the referenced
505 * buffer for any required padding. To indicate the amount of class defined
506 * data being transferred, the paylen_newwin field in the RMPP header should
507 * be set to the size of the class specific header plus the amount of class
508 * defined data being transferred. The paylen_newwin field should be
509 * specified in network-byte order.
511 int ib_post_send_mad(struct ib_mad_send_buf *send_buf,
512 struct ib_mad_send_buf **bad_send_buf);
516 * ib_free_recv_mad - Returns data buffers used to receive a MAD.
517 * @mad_recv_wc: Work completion information for a received MAD.
519 * Clients receiving MADs through their ib_mad_recv_handler must call this
520 * routine to return the work completion buffers to the access layer.
522 void ib_free_recv_mad(struct ib_mad_recv_wc *mad_recv_wc);
525 * ib_cancel_mad - Cancels an outstanding send MAD operation.
526 * @mad_agent: Specifies the registration associated with sent MAD.
527 * @send_buf: Indicates the MAD to cancel.
529 * MADs will be returned to the user through the corresponding
530 * ib_mad_send_handler.
532 void ib_cancel_mad(struct ib_mad_agent *mad_agent,
533 struct ib_mad_send_buf *send_buf);
536 * ib_modify_mad - Modifies an outstanding send MAD operation.
537 * @mad_agent: Specifies the registration associated with sent MAD.
538 * @send_buf: Indicates the MAD to modify.
539 * @timeout_ms: New timeout value for sent MAD.
541 * This call will reset the timeout value for a sent MAD to the specified
544 int ib_modify_mad(struct ib_mad_agent *mad_agent,
545 struct ib_mad_send_buf *send_buf, u32 timeout_ms);
548 * ib_redirect_mad_qp - Registers a QP for MAD services.
549 * @qp: Reference to a QP that requires MAD services.
550 * @rmpp_version: If set, indicates that the client will send
551 * and receive MADs that contain the RMPP header for the given version.
552 * If set to 0, indicates that RMPP is not used by this client.
553 * @send_handler: The completion callback routine invoked after a send
554 * request has completed.
555 * @recv_handler: The completion callback routine invoked for a received
557 * @context: User specified context associated with the registration.
559 * Use of this call allows clients to use MAD services, such as RMPP,
560 * on user-owned QPs. After calling this routine, users may send
561 * MADs on the specified QP by calling ib_mad_post_send.
563 struct ib_mad_agent *ib_redirect_mad_qp(struct ib_qp *qp,
565 ib_mad_send_handler send_handler,
566 ib_mad_recv_handler recv_handler,
570 * ib_process_mad_wc - Processes a work completion associated with a
571 * MAD sent or received on a redirected QP.
572 * @mad_agent: Specifies the registered MAD service using the redirected QP.
573 * @wc: References a work completion associated with a sent or received
576 * This routine is used to complete or continue processing on a MAD request.
577 * If the work completion is associated with a send operation, calling
578 * this routine is required to continue an RMPP transfer or to wait for a
579 * corresponding response, if it is a request. If the work completion is
580 * associated with a receive operation, calling this routine is required to
581 * process an inbound or outbound RMPP transfer, or to match a response MAD
582 * with its corresponding request.
584 int ib_process_mad_wc(struct ib_mad_agent *mad_agent,
588 * ib_create_send_mad - Allocate and initialize a data buffer and work request
590 * @mad_agent: Specifies the registered MAD service to associate with the MAD.
591 * @remote_qpn: Specifies the QPN of the receiving node.
592 * @pkey_index: Specifies which PKey the MAD will be sent using. This field
593 * is valid only if the remote_qpn is QP 1.
594 * @rmpp_active: Indicates if the send will enable RMPP.
595 * @hdr_len: Indicates the size of the data header of the MAD. This length
596 * should include the common MAD header, RMPP header, plus any class
598 * @data_len: Indicates the size of any user-transferred data. The call will
599 * automatically adjust the allocated buffer size to account for any
600 * additional padding that may be necessary.
601 * @gfp_mask: GFP mask used for the memory allocation.
603 * This routine allocates a MAD for sending. The returned MAD send buffer
604 * will reference a data buffer usable for sending a MAD, along
605 * with an initialized work request structure. Users may modify the returned
606 * MAD data buffer before posting the send.
608 * The returned MAD header, class specific headers, and any padding will be
609 * cleared. Users are responsible for initializing the common MAD header,
610 * any class specific header, and MAD data area.
611 * If @rmpp_active is set, the RMPP header will be initialized for sending.
613 struct ib_mad_send_buf * ib_create_send_mad(struct ib_mad_agent *mad_agent,
614 u32 remote_qpn, u16 pkey_index,
616 int hdr_len, int data_len,
620 * ib_is_mad_class_rmpp - returns whether given management class
622 * @mgmt_class: management class
624 * This routine returns whether the management class supports RMPP.
626 int ib_is_mad_class_rmpp(u8 mgmt_class);
629 * ib_get_mad_data_offset - returns the data offset for a given
631 * @mgmt_class: management class
633 * This routine returns the data offset in the MAD for the management
636 int ib_get_mad_data_offset(u8 mgmt_class);
639 * ib_get_rmpp_segment - returns the data buffer for a given RMPP segment.
640 * @send_buf: Previously allocated send data buffer.
641 * @seg_num: number of segment to return
643 * This routine returns a pointer to the data buffer of an RMPP MAD.
644 * Users must provide synchronization to @send_buf around this call.
646 void *ib_get_rmpp_segment(struct ib_mad_send_buf *send_buf, int seg_num);
649 * ib_free_send_mad - Returns data buffers used to send a MAD.
650 * @send_buf: Previously allocated send data buffer.
652 void ib_free_send_mad(struct ib_mad_send_buf *send_buf);
654 #endif /* IB_MAD_H */