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1da177e4 LT |
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. | |
618a3c03 | 6 | * Copyright (c) 2004-2006 Voltaire Corporation. All rights reserved. |
1da177e4 LT |
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. | |
1da177e4 LT |
35 | */ |
36 | ||
4deccd6d | 37 | #if !defined(IB_MAD_H) |
1da177e4 LT |
38 | #define IB_MAD_H |
39 | ||
e8b398de DB |
40 | #include <linux/list.h> |
41 | ||
a4d61e84 | 42 | #include <rdma/ib_verbs.h> |
1471cb6c | 43 | #include <uapi/rdma/ib_user_mad.h> |
1da177e4 | 44 | |
548ead17 | 45 | /* Management base versions */ |
1da177e4 | 46 | #define IB_MGMT_BASE_VERSION 1 |
548ead17 IW |
47 | #define OPA_MGMT_BASE_VERSION 0x80 |
48 | ||
49 | #define OPA_SMP_CLASS_VERSION 0x80 | |
1da177e4 LT |
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 | |
618a3c03 HR |
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 | |
1da177e4 LT |
64 | #define IB_MGMT_CLASS_VENDOR_RANGE2_START 0x30 |
65 | #define IB_MGMT_CLASS_VENDOR_RANGE2_END 0x4F | |
66 | ||
d2082ee5 HR |
67 | #define IB_OPENIB_OUI (0x001405) |
68 | ||
1da177e4 LT |
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 | |
2527e681 | 80 | #define IB_BM_ATTR_MOD_RESP cpu_to_be32(1) |
1da177e4 LT |
81 | |
82 | #define IB_MGMT_MAX_METHODS 128 | |
83 | ||
d144b650 ST |
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 | ||
d2082ee5 HR |
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 | |
fe9e08e1 | 109 | #define IB_MGMT_RMPP_STATUS_ABORT_MIN 118 |
d2082ee5 HR |
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 | |
fe9e08e1 | 120 | #define IB_MGMT_RMPP_STATUS_ABORT_MAX 127 |
d2082ee5 | 121 | |
1da177e4 | 122 | #define IB_QP0 0 |
9c3da099 | 123 | #define IB_QP1 cpu_to_be32(1) |
1da177e4 | 124 | #define IB_QP1_QKEY 0x80010000 |
824c8ae7 | 125 | #define IB_QP_SET_QKEY 0x80000000 |
1da177e4 | 126 | |
2aec5c60 SH |
127 | #define IB_DEFAULT_PKEY_PARTIAL 0x7FFF |
128 | #define IB_DEFAULT_PKEY_FULL 0xFFFF | |
129 | ||
972d512a | 130 | enum { |
34816ad9 | 131 | IB_MGMT_MAD_HDR = 24, |
972d512a | 132 | IB_MGMT_MAD_DATA = 232, |
34816ad9 | 133 | IB_MGMT_RMPP_HDR = 36, |
972d512a | 134 | IB_MGMT_RMPP_DATA = 220, |
34816ad9 | 135 | IB_MGMT_VENDOR_HDR = 40, |
972d512a | 136 | IB_MGMT_VENDOR_DATA = 216, |
34816ad9 SH |
137 | IB_MGMT_SA_HDR = 56, |
138 | IB_MGMT_SA_DATA = 200, | |
618a3c03 HR |
139 | IB_MGMT_DEVICE_HDR = 64, |
140 | IB_MGMT_DEVICE_DATA = 192, | |
337877a4 | 141 | IB_MGMT_MAD_SIZE = IB_MGMT_MAD_HDR + IB_MGMT_MAD_DATA, |
548ead17 IW |
142 | OPA_MGMT_MAD_DATA = 2024, |
143 | OPA_MGMT_RMPP_DATA = 2012, | |
144 | OPA_MGMT_MAD_SIZE = IB_MGMT_MAD_HDR + OPA_MGMT_MAD_DATA, | |
972d512a SH |
145 | }; |
146 | ||
1da177e4 LT |
147 | struct ib_mad_hdr { |
148 | u8 base_version; | |
149 | u8 mgmt_class; | |
150 | u8 class_version; | |
151 | u8 method; | |
97f52eb4 SH |
152 | __be16 status; |
153 | __be16 class_specific; | |
154 | __be64 tid; | |
155 | __be16 attr_id; | |
156 | __be16 resv; | |
157 | __be32 attr_mod; | |
d2082ee5 | 158 | }; |
1da177e4 LT |
159 | |
160 | struct ib_rmpp_hdr { | |
161 | u8 rmpp_version; | |
162 | u8 rmpp_type; | |
163 | u8 rmpp_rtime_flags; | |
164 | u8 rmpp_status; | |
97f52eb4 SH |
165 | __be32 seg_num; |
166 | __be32 paylen_newwin; | |
d2082ee5 HR |
167 | }; |
168 | ||
169 | typedef u64 __bitwise ib_sa_comp_mask; | |
170 | ||
02daaf27 | 171 | #define IB_SA_COMP_MASK(n) ((__force ib_sa_comp_mask) cpu_to_be64(1ull << (n))) |
d2082ee5 HR |
172 | |
173 | /* | |
174 | * ib_sa_hdr and ib_sa_mad structures must be packed because they have | |
175 | * 64-bit fields that are only 32-bit aligned. 64-bit architectures will | |
176 | * lay them out wrong otherwise. (And unfortunately they are sent on | |
177 | * the wire so we can't change the layout) | |
178 | */ | |
179 | struct ib_sa_hdr { | |
97f52eb4 SH |
180 | __be64 sm_key; |
181 | __be16 attr_offset; | |
182 | __be16 reserved; | |
d2082ee5 | 183 | ib_sa_comp_mask comp_mask; |
1da177e4 LT |
184 | } __attribute__ ((packed)); |
185 | ||
186 | struct ib_mad { | |
187 | struct ib_mad_hdr mad_hdr; | |
972d512a | 188 | u8 data[IB_MGMT_MAD_DATA]; |
d2082ee5 | 189 | }; |
1da177e4 | 190 | |
548ead17 IW |
191 | struct opa_mad { |
192 | struct ib_mad_hdr mad_hdr; | |
193 | u8 data[OPA_MGMT_MAD_DATA]; | |
194 | }; | |
195 | ||
1da177e4 LT |
196 | struct ib_rmpp_mad { |
197 | struct ib_mad_hdr mad_hdr; | |
198 | struct ib_rmpp_hdr rmpp_hdr; | |
972d512a | 199 | u8 data[IB_MGMT_RMPP_DATA]; |
d2082ee5 HR |
200 | }; |
201 | ||
8e4349d1 IW |
202 | struct opa_rmpp_mad { |
203 | struct ib_mad_hdr mad_hdr; | |
204 | struct ib_rmpp_hdr rmpp_hdr; | |
205 | u8 data[OPA_MGMT_RMPP_DATA]; | |
206 | }; | |
207 | ||
d2082ee5 HR |
208 | struct ib_sa_mad { |
209 | struct ib_mad_hdr mad_hdr; | |
210 | struct ib_rmpp_hdr rmpp_hdr; | |
211 | struct ib_sa_hdr sa_hdr; | |
972d512a | 212 | u8 data[IB_MGMT_SA_DATA]; |
1da177e4 LT |
213 | } __attribute__ ((packed)); |
214 | ||
215 | struct ib_vendor_mad { | |
216 | struct ib_mad_hdr mad_hdr; | |
217 | struct ib_rmpp_hdr rmpp_hdr; | |
218 | u8 reserved; | |
219 | u8 oui[3]; | |
972d512a | 220 | u8 data[IB_MGMT_VENDOR_DATA]; |
d2082ee5 | 221 | }; |
1da177e4 | 222 | |
4deccd6d | 223 | struct ib_class_port_info { |
2e9f7cb7 RD |
224 | u8 base_version; |
225 | u8 class_version; | |
226 | __be16 capability_mask; | |
227 | u8 reserved[3]; | |
228 | u8 resp_time_value; | |
229 | u8 redirect_gid[16]; | |
230 | __be32 redirect_tcslfl; | |
231 | __be16 redirect_lid; | |
232 | __be16 redirect_pkey; | |
233 | __be32 redirect_qp; | |
234 | __be32 redirect_qkey; | |
235 | u8 trap_gid[16]; | |
236 | __be32 trap_tcslfl; | |
237 | __be16 trap_lid; | |
238 | __be16 trap_pkey; | |
239 | __be32 trap_hlqp; | |
240 | __be32 trap_qkey; | |
241 | }; | |
242 | ||
824c8ae7 HR |
243 | /** |
244 | * ib_mad_send_buf - MAD data buffer and work request for sends. | |
34816ad9 | 245 | * @next: A pointer used to chain together MADs for posting. |
f36e1793 JM |
246 | * @mad: References an allocated MAD data buffer for MADs that do not have |
247 | * RMPP active. For MADs using RMPP, references the common and management | |
248 | * class specific headers. | |
824c8ae7 | 249 | * @mad_agent: MAD agent that allocated the buffer. |
34816ad9 | 250 | * @ah: The address handle to use when sending the MAD. |
824c8ae7 | 251 | * @context: User-controlled context fields. |
f36e1793 JM |
252 | * @hdr_len: Indicates the size of the data header of the MAD. This length |
253 | * includes the common MAD, RMPP, and class specific headers. | |
254 | * @data_len: Indicates the total size of user-transferred data. | |
255 | * @seg_count: The number of RMPP segments allocated for this send. | |
548ead17 IW |
256 | * @seg_size: Size of the data in each RMPP segment. This does not include |
257 | * class specific headers. | |
258 | * @seg_rmpp_size: Size of each RMPP segment including the class specific | |
259 | * headers. | |
34816ad9 | 260 | * @timeout_ms: Time to wait for a response. |
4fc8cd49 SH |
261 | * @retries: Number of times to retry a request for a response. For MADs |
262 | * using RMPP, this applies per window. On completion, returns the number | |
263 | * of retries needed to complete the transfer. | |
824c8ae7 HR |
264 | * |
265 | * Users are responsible for initializing the MAD buffer itself, with the | |
f36e1793 JM |
266 | * exception of any RMPP header. Additional segment buffer space allocated |
267 | * beyond data_len is padding. | |
824c8ae7 HR |
268 | */ |
269 | struct ib_mad_send_buf { | |
34816ad9 SH |
270 | struct ib_mad_send_buf *next; |
271 | void *mad; | |
824c8ae7 | 272 | struct ib_mad_agent *mad_agent; |
34816ad9 | 273 | struct ib_ah *ah; |
824c8ae7 | 274 | void *context[2]; |
f36e1793 JM |
275 | int hdr_len; |
276 | int data_len; | |
277 | int seg_count; | |
278 | int seg_size; | |
548ead17 | 279 | int seg_rmpp_size; |
34816ad9 SH |
280 | int timeout_ms; |
281 | int retries; | |
824c8ae7 HR |
282 | }; |
283 | ||
2527e681 SH |
284 | /** |
285 | * ib_response_mad - Returns if the specified MAD has been generated in | |
286 | * response to a sent request or trap. | |
287 | */ | |
96909308 | 288 | int ib_response_mad(const struct ib_mad_hdr *hdr); |
2527e681 | 289 | |
d2082ee5 HR |
290 | /** |
291 | * ib_get_rmpp_resptime - Returns the RMPP response time. | |
292 | * @rmpp_hdr: An RMPP header. | |
293 | */ | |
294 | static inline u8 ib_get_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr) | |
295 | { | |
296 | return rmpp_hdr->rmpp_rtime_flags >> 3; | |
297 | } | |
298 | ||
299 | /** | |
300 | * ib_get_rmpp_flags - Returns the RMPP flags. | |
301 | * @rmpp_hdr: An RMPP header. | |
302 | */ | |
303 | static inline u8 ib_get_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr) | |
304 | { | |
305 | return rmpp_hdr->rmpp_rtime_flags & 0x7; | |
306 | } | |
307 | ||
308 | /** | |
309 | * ib_set_rmpp_resptime - Sets the response time in an RMPP header. | |
310 | * @rmpp_hdr: An RMPP header. | |
311 | * @rtime: The response time to set. | |
312 | */ | |
313 | static inline void ib_set_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr, u8 rtime) | |
314 | { | |
315 | rmpp_hdr->rmpp_rtime_flags = ib_get_rmpp_flags(rmpp_hdr) | (rtime << 3); | |
316 | } | |
317 | ||
318 | /** | |
319 | * ib_set_rmpp_flags - Sets the flags in an RMPP header. | |
320 | * @rmpp_hdr: An RMPP header. | |
321 | * @flags: The flags to set. | |
322 | */ | |
323 | static inline void ib_set_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr, u8 flags) | |
324 | { | |
7020cb0f | 325 | rmpp_hdr->rmpp_rtime_flags = (rmpp_hdr->rmpp_rtime_flags & 0xF8) | |
d2082ee5 HR |
326 | (flags & 0x7); |
327 | } | |
328 | ||
1da177e4 LT |
329 | struct ib_mad_agent; |
330 | struct ib_mad_send_wc; | |
331 | struct ib_mad_recv_wc; | |
332 | ||
333 | /** | |
334 | * ib_mad_send_handler - callback handler for a sent MAD. | |
335 | * @mad_agent: MAD agent that sent the MAD. | |
336 | * @mad_send_wc: Send work completion information on the sent MAD. | |
337 | */ | |
338 | typedef void (*ib_mad_send_handler)(struct ib_mad_agent *mad_agent, | |
339 | struct ib_mad_send_wc *mad_send_wc); | |
340 | ||
341 | /** | |
342 | * ib_mad_snoop_handler - Callback handler for snooping sent MADs. | |
343 | * @mad_agent: MAD agent that snooped the MAD. | |
344 | * @send_wr: Work request information on the sent MAD. | |
345 | * @mad_send_wc: Work completion information on the sent MAD. Valid | |
346 | * only for snooping that occurs on a send completion. | |
347 | * | |
348 | * Clients snooping MADs should not modify data referenced by the @send_wr | |
349 | * or @mad_send_wc. | |
350 | */ | |
351 | typedef void (*ib_mad_snoop_handler)(struct ib_mad_agent *mad_agent, | |
34816ad9 | 352 | struct ib_mad_send_buf *send_buf, |
1da177e4 LT |
353 | struct ib_mad_send_wc *mad_send_wc); |
354 | ||
355 | /** | |
356 | * ib_mad_recv_handler - callback handler for a received MAD. | |
357 | * @mad_agent: MAD agent requesting the received MAD. | |
358 | * @mad_recv_wc: Received work completion information on the received MAD. | |
359 | * | |
360 | * MADs received in response to a send request operation will be handed to | |
f36e1793 | 361 | * the user before the send operation completes. All data buffers given |
1da177e4 LT |
362 | * to registered agents through this routine are owned by the receiving |
363 | * client, except for snooping agents. Clients snooping MADs should not | |
364 | * modify the data referenced by @mad_recv_wc. | |
365 | */ | |
366 | typedef void (*ib_mad_recv_handler)(struct ib_mad_agent *mad_agent, | |
367 | struct ib_mad_recv_wc *mad_recv_wc); | |
368 | ||
369 | /** | |
370 | * ib_mad_agent - Used to track MAD registration with the access layer. | |
371 | * @device: Reference to device registration is on. | |
372 | * @qp: Reference to QP used for sending and receiving MADs. | |
d2082ee5 | 373 | * @mr: Memory region for system memory usable for DMA. |
1da177e4 LT |
374 | * @recv_handler: Callback handler for a received MAD. |
375 | * @send_handler: Callback handler for a sent MAD. | |
376 | * @snoop_handler: Callback handler for snooped sent MADs. | |
377 | * @context: User-specified context associated with this registration. | |
378 | * @hi_tid: Access layer assigned transaction ID for this client. | |
379 | * Unsolicited MADs sent by this client will have the upper 32-bits | |
380 | * of their TID set to this value. | |
0f29b46d | 381 | * @flags: registration flags |
1da177e4 | 382 | * @port_num: Port number on which QP is registered |
d2082ee5 | 383 | * @rmpp_version: If set, indicates the RMPP version used by this agent. |
1da177e4 | 384 | */ |
1471cb6c IW |
385 | enum { |
386 | IB_MAD_USER_RMPP = IB_USER_MAD_USER_RMPP, | |
387 | }; | |
1da177e4 LT |
388 | struct ib_mad_agent { |
389 | struct ib_device *device; | |
390 | struct ib_qp *qp; | |
b82cab6b | 391 | struct ib_mr *mr; |
1da177e4 LT |
392 | ib_mad_recv_handler recv_handler; |
393 | ib_mad_send_handler send_handler; | |
394 | ib_mad_snoop_handler snoop_handler; | |
395 | void *context; | |
396 | u32 hi_tid; | |
0f29b46d | 397 | u32 flags; |
1da177e4 | 398 | u8 port_num; |
d2082ee5 | 399 | u8 rmpp_version; |
1da177e4 LT |
400 | }; |
401 | ||
402 | /** | |
403 | * ib_mad_send_wc - MAD send completion information. | |
34816ad9 | 404 | * @send_buf: Send MAD data buffer associated with the send MAD request. |
1da177e4 LT |
405 | * @status: Completion status. |
406 | * @vendor_err: Optional vendor error information returned with a failed | |
407 | * request. | |
408 | */ | |
409 | struct ib_mad_send_wc { | |
34816ad9 | 410 | struct ib_mad_send_buf *send_buf; |
1da177e4 LT |
411 | enum ib_wc_status status; |
412 | u32 vendor_err; | |
413 | }; | |
414 | ||
415 | /** | |
416 | * ib_mad_recv_buf - received MAD buffer information. | |
417 | * @list: Reference to next data buffer for a received RMPP MAD. | |
418 | * @grh: References a data buffer containing the global route header. | |
419 | * The data refereced by this buffer is only valid if the GRH is | |
420 | * valid. | |
421 | * @mad: References the start of the received MAD. | |
422 | */ | |
423 | struct ib_mad_recv_buf { | |
424 | struct list_head list; | |
425 | struct ib_grh *grh; | |
548ead17 IW |
426 | union { |
427 | struct ib_mad *mad; | |
428 | struct opa_mad *opa_mad; | |
429 | }; | |
1da177e4 LT |
430 | }; |
431 | ||
432 | /** | |
433 | * ib_mad_recv_wc - received MAD information. | |
434 | * @wc: Completion information for the received data. | |
435 | * @recv_buf: Specifies the location of the received data buffer(s). | |
d2082ee5 | 436 | * @rmpp_list: Specifies a list of RMPP reassembled received MAD buffers. |
1da177e4 | 437 | * @mad_len: The length of the received MAD, without duplicated headers. |
8e4349d1 | 438 | * @mad_seg_size: The size of individual MAD segments |
1da177e4 | 439 | * |
34816ad9 | 440 | * For received response, the wr_id contains a pointer to the ib_mad_send_buf |
1da177e4 LT |
441 | * for the corresponding send request. |
442 | */ | |
443 | struct ib_mad_recv_wc { | |
444 | struct ib_wc *wc; | |
445 | struct ib_mad_recv_buf recv_buf; | |
d2082ee5 | 446 | struct list_head rmpp_list; |
1da177e4 | 447 | int mad_len; |
8e4349d1 | 448 | size_t mad_seg_size; |
1da177e4 LT |
449 | }; |
450 | ||
451 | /** | |
452 | * ib_mad_reg_req - MAD registration request | |
453 | * @mgmt_class: Indicates which management class of MADs should be receive | |
454 | * by the caller. This field is only required if the user wishes to | |
455 | * receive unsolicited MADs, otherwise it should be 0. | |
456 | * @mgmt_class_version: Indicates which version of MADs for the given | |
457 | * management class to receive. | |
458 | * @oui: Indicates IEEE OUI when mgmt_class is a vendor class | |
459 | * in the range from 0x30 to 0x4f. Otherwise not used. | |
460 | * @method_mask: The caller will receive unsolicited MADs for any method | |
461 | * where @method_mask = 1. | |
0f29b46d | 462 | * |
1da177e4 LT |
463 | */ |
464 | struct ib_mad_reg_req { | |
465 | u8 mgmt_class; | |
466 | u8 mgmt_class_version; | |
467 | u8 oui[3]; | |
468 | DECLARE_BITMAP(method_mask, IB_MGMT_MAX_METHODS); | |
469 | }; | |
470 | ||
471 | /** | |
472 | * ib_register_mad_agent - Register to send/receive MADs. | |
473 | * @device: The device to register with. | |
474 | * @port_num: The port on the specified device to use. | |
475 | * @qp_type: Specifies which QP to access. Must be either | |
476 | * IB_QPT_SMI or IB_QPT_GSI. | |
477 | * @mad_reg_req: Specifies which unsolicited MADs should be received | |
478 | * by the caller. This parameter may be NULL if the caller only | |
479 | * wishes to receive solicited responses. | |
480 | * @rmpp_version: If set, indicates that the client will send | |
481 | * and receive MADs that contain the RMPP header for the given version. | |
482 | * If set to 0, indicates that RMPP is not used by this client. | |
483 | * @send_handler: The completion callback routine invoked after a send | |
484 | * request has completed. | |
485 | * @recv_handler: The completion callback routine invoked for a received | |
486 | * MAD. | |
487 | * @context: User specified context associated with the registration. | |
0f29b46d | 488 | * @registration_flags: Registration flags to set for this agent |
1da177e4 LT |
489 | */ |
490 | struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device, | |
491 | u8 port_num, | |
492 | enum ib_qp_type qp_type, | |
493 | struct ib_mad_reg_req *mad_reg_req, | |
494 | u8 rmpp_version, | |
495 | ib_mad_send_handler send_handler, | |
496 | ib_mad_recv_handler recv_handler, | |
0f29b46d IW |
497 | void *context, |
498 | u32 registration_flags); | |
1da177e4 LT |
499 | |
500 | enum ib_mad_snoop_flags { | |
501 | /*IB_MAD_SNOOP_POSTED_SENDS = 1,*/ | |
502 | /*IB_MAD_SNOOP_RMPP_SENDS = (1<<1),*/ | |
503 | IB_MAD_SNOOP_SEND_COMPLETIONS = (1<<2), | |
504 | /*IB_MAD_SNOOP_RMPP_SEND_COMPLETIONS = (1<<3),*/ | |
505 | IB_MAD_SNOOP_RECVS = (1<<4) | |
506 | /*IB_MAD_SNOOP_RMPP_RECVS = (1<<5),*/ | |
507 | /*IB_MAD_SNOOP_REDIRECTED_QPS = (1<<6)*/ | |
508 | }; | |
509 | ||
510 | /** | |
511 | * ib_register_mad_snoop - Register to snoop sent and received MADs. | |
512 | * @device: The device to register with. | |
513 | * @port_num: The port on the specified device to use. | |
514 | * @qp_type: Specifies which QP traffic to snoop. Must be either | |
515 | * IB_QPT_SMI or IB_QPT_GSI. | |
516 | * @mad_snoop_flags: Specifies information where snooping occurs. | |
517 | * @send_handler: The callback routine invoked for a snooped send. | |
518 | * @recv_handler: The callback routine invoked for a snooped receive. | |
519 | * @context: User specified context associated with the registration. | |
520 | */ | |
521 | struct ib_mad_agent *ib_register_mad_snoop(struct ib_device *device, | |
522 | u8 port_num, | |
523 | enum ib_qp_type qp_type, | |
524 | int mad_snoop_flags, | |
525 | ib_mad_snoop_handler snoop_handler, | |
526 | ib_mad_recv_handler recv_handler, | |
527 | void *context); | |
528 | ||
529 | /** | |
530 | * ib_unregister_mad_agent - Unregisters a client from using MAD services. | |
531 | * @mad_agent: Corresponding MAD registration request to deregister. | |
532 | * | |
533 | * After invoking this routine, MAD services are no longer usable by the | |
534 | * client on the associated QP. | |
535 | */ | |
536 | int ib_unregister_mad_agent(struct ib_mad_agent *mad_agent); | |
537 | ||
538 | /** | |
539 | * ib_post_send_mad - Posts MAD(s) to the send queue of the QP associated | |
540 | * with the registered client. | |
34816ad9 SH |
541 | * @send_buf: Specifies the information needed to send the MAD(s). |
542 | * @bad_send_buf: Specifies the MAD on which an error was encountered. This | |
543 | * parameter is optional if only a single MAD is posted. | |
1da177e4 LT |
544 | * |
545 | * Sent MADs are not guaranteed to complete in the order that they were posted. | |
d2082ee5 HR |
546 | * |
547 | * If the MAD requires RMPP, the data buffer should contain a single copy | |
548 | * of the common MAD, RMPP, and class specific headers, followed by the class | |
549 | * defined data. If the class defined data would not divide evenly into | |
550 | * RMPP segments, then space must be allocated at the end of the referenced | |
551 | * buffer for any required padding. To indicate the amount of class defined | |
552 | * data being transferred, the paylen_newwin field in the RMPP header should | |
553 | * be set to the size of the class specific header plus the amount of class | |
554 | * defined data being transferred. The paylen_newwin field should be | |
555 | * specified in network-byte order. | |
1da177e4 | 556 | */ |
34816ad9 SH |
557 | int ib_post_send_mad(struct ib_mad_send_buf *send_buf, |
558 | struct ib_mad_send_buf **bad_send_buf); | |
1da177e4 | 559 | |
1da177e4 LT |
560 | |
561 | /** | |
d2082ee5 | 562 | * ib_free_recv_mad - Returns data buffers used to receive a MAD. |
1da177e4 LT |
563 | * @mad_recv_wc: Work completion information for a received MAD. |
564 | * | |
565 | * Clients receiving MADs through their ib_mad_recv_handler must call this | |
566 | * routine to return the work completion buffers to the access layer. | |
567 | */ | |
568 | void ib_free_recv_mad(struct ib_mad_recv_wc *mad_recv_wc); | |
569 | ||
570 | /** | |
571 | * ib_cancel_mad - Cancels an outstanding send MAD operation. | |
572 | * @mad_agent: Specifies the registration associated with sent MAD. | |
34816ad9 | 573 | * @send_buf: Indicates the MAD to cancel. |
1da177e4 LT |
574 | * |
575 | * MADs will be returned to the user through the corresponding | |
576 | * ib_mad_send_handler. | |
577 | */ | |
34816ad9 SH |
578 | void ib_cancel_mad(struct ib_mad_agent *mad_agent, |
579 | struct ib_mad_send_buf *send_buf); | |
03b61ad2 HR |
580 | |
581 | /** | |
582 | * ib_modify_mad - Modifies an outstanding send MAD operation. | |
583 | * @mad_agent: Specifies the registration associated with sent MAD. | |
34816ad9 | 584 | * @send_buf: Indicates the MAD to modify. |
03b61ad2 HR |
585 | * @timeout_ms: New timeout value for sent MAD. |
586 | * | |
587 | * This call will reset the timeout value for a sent MAD to the specified | |
588 | * value. | |
589 | */ | |
34816ad9 SH |
590 | int ib_modify_mad(struct ib_mad_agent *mad_agent, |
591 | struct ib_mad_send_buf *send_buf, u32 timeout_ms); | |
1da177e4 LT |
592 | |
593 | /** | |
594 | * ib_redirect_mad_qp - Registers a QP for MAD services. | |
595 | * @qp: Reference to a QP that requires MAD services. | |
596 | * @rmpp_version: If set, indicates that the client will send | |
597 | * and receive MADs that contain the RMPP header for the given version. | |
598 | * If set to 0, indicates that RMPP is not used by this client. | |
599 | * @send_handler: The completion callback routine invoked after a send | |
600 | * request has completed. | |
601 | * @recv_handler: The completion callback routine invoked for a received | |
602 | * MAD. | |
603 | * @context: User specified context associated with the registration. | |
604 | * | |
605 | * Use of this call allows clients to use MAD services, such as RMPP, | |
606 | * on user-owned QPs. After calling this routine, users may send | |
607 | * MADs on the specified QP by calling ib_mad_post_send. | |
608 | */ | |
609 | struct ib_mad_agent *ib_redirect_mad_qp(struct ib_qp *qp, | |
610 | u8 rmpp_version, | |
611 | ib_mad_send_handler send_handler, | |
612 | ib_mad_recv_handler recv_handler, | |
613 | void *context); | |
614 | ||
615 | /** | |
616 | * ib_process_mad_wc - Processes a work completion associated with a | |
617 | * MAD sent or received on a redirected QP. | |
618 | * @mad_agent: Specifies the registered MAD service using the redirected QP. | |
619 | * @wc: References a work completion associated with a sent or received | |
620 | * MAD segment. | |
621 | * | |
622 | * This routine is used to complete or continue processing on a MAD request. | |
623 | * If the work completion is associated with a send operation, calling | |
624 | * this routine is required to continue an RMPP transfer or to wait for a | |
625 | * corresponding response, if it is a request. If the work completion is | |
626 | * associated with a receive operation, calling this routine is required to | |
627 | * process an inbound or outbound RMPP transfer, or to match a response MAD | |
628 | * with its corresponding request. | |
629 | */ | |
630 | int ib_process_mad_wc(struct ib_mad_agent *mad_agent, | |
631 | struct ib_wc *wc); | |
632 | ||
824c8ae7 HR |
633 | /** |
634 | * ib_create_send_mad - Allocate and initialize a data buffer and work request | |
635 | * for sending a MAD. | |
636 | * @mad_agent: Specifies the registered MAD service to associate with the MAD. | |
637 | * @remote_qpn: Specifies the QPN of the receiving node. | |
638 | * @pkey_index: Specifies which PKey the MAD will be sent using. This field | |
639 | * is valid only if the remote_qpn is QP 1. | |
d2082ee5 | 640 | * @rmpp_active: Indicates if the send will enable RMPP. |
824c8ae7 HR |
641 | * @hdr_len: Indicates the size of the data header of the MAD. This length |
642 | * should include the common MAD header, RMPP header, plus any class | |
643 | * specific header. | |
d2082ee5 | 644 | * @data_len: Indicates the size of any user-transferred data. The call will |
824c8ae7 HR |
645 | * automatically adjust the allocated buffer size to account for any |
646 | * additional padding that may be necessary. | |
647 | * @gfp_mask: GFP mask used for the memory allocation. | |
da2dfaa3 | 648 | * @base_version: Base Version of this MAD |
824c8ae7 | 649 | * |
34816ad9 SH |
650 | * This routine allocates a MAD for sending. The returned MAD send buffer |
651 | * will reference a data buffer usable for sending a MAD, along | |
d2082ee5 | 652 | * with an initialized work request structure. Users may modify the returned |
34816ad9 | 653 | * MAD data buffer before posting the send. |
d2082ee5 | 654 | * |
f36e1793 JM |
655 | * The returned MAD header, class specific headers, and any padding will be |
656 | * cleared. Users are responsible for initializing the common MAD header, | |
657 | * any class specific header, and MAD data area. | |
658 | * If @rmpp_active is set, the RMPP header will be initialized for sending. | |
824c8ae7 | 659 | */ |
4deccd6d DB |
660 | struct ib_mad_send_buf *ib_create_send_mad(struct ib_mad_agent *mad_agent, |
661 | u32 remote_qpn, u16 pkey_index, | |
662 | int rmpp_active, | |
663 | int hdr_len, int data_len, | |
da2dfaa3 IW |
664 | gfp_t gfp_mask, |
665 | u8 base_version); | |
824c8ae7 | 666 | |
618a3c03 HR |
667 | /** |
668 | * ib_is_mad_class_rmpp - returns whether given management class | |
669 | * supports RMPP. | |
670 | * @mgmt_class: management class | |
671 | * | |
672 | * This routine returns whether the management class supports RMPP. | |
673 | */ | |
674 | int ib_is_mad_class_rmpp(u8 mgmt_class); | |
675 | ||
676 | /** | |
677 | * ib_get_mad_data_offset - returns the data offset for a given | |
678 | * management class. | |
679 | * @mgmt_class: management class | |
680 | * | |
681 | * This routine returns the data offset in the MAD for the management | |
682 | * class requested. | |
683 | */ | |
684 | int ib_get_mad_data_offset(u8 mgmt_class); | |
685 | ||
f36e1793 JM |
686 | /** |
687 | * ib_get_rmpp_segment - returns the data buffer for a given RMPP segment. | |
688 | * @send_buf: Previously allocated send data buffer. | |
689 | * @seg_num: number of segment to return | |
690 | * | |
691 | * This routine returns a pointer to the data buffer of an RMPP MAD. | |
692 | * Users must provide synchronization to @send_buf around this call. | |
693 | */ | |
694 | void *ib_get_rmpp_segment(struct ib_mad_send_buf *send_buf, int seg_num); | |
695 | ||
824c8ae7 HR |
696 | /** |
697 | * ib_free_send_mad - Returns data buffers used to send a MAD. | |
698 | * @send_buf: Previously allocated send data buffer. | |
699 | */ | |
700 | void ib_free_send_mad(struct ib_mad_send_buf *send_buf); | |
701 | ||
1471cb6c IW |
702 | /** |
703 | * ib_mad_kernel_rmpp_agent - Returns if the agent is performing RMPP. | |
704 | * @agent: the agent in question | |
705 | * @return: true if agent is performing rmpp, false otherwise. | |
706 | */ | |
f766c58f | 707 | int ib_mad_kernel_rmpp_agent(const struct ib_mad_agent *agent); |
1471cb6c | 708 | |
1da177e4 | 709 | #endif /* IB_MAD_H */ |