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c3e01647 | 1 | /* |
07d357d0 | 2 | * Copyright (c) 2004, 2005 Intel Corporation. All rights reserved. |
c3e01647 HR |
3 | * Copyright (c) 2004 Topspin Corporation. All rights reserved. |
4 | * Copyright (c) 2004 Voltaire Corporation. All rights reserved. | |
5 | * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. | |
6 | * | |
7 | * This software is available to you under a choice of one of two | |
8 | * licenses. You may choose to be licensed under the terms of the GNU | |
9 | * General Public License (GPL) Version 2, available from the file | |
10 | * COPYING in the main directory of this source tree, or the | |
11 | * OpenIB.org BSD license below: | |
12 | * | |
13 | * Redistribution and use in source and binary forms, with or | |
14 | * without modification, are permitted provided that the following | |
15 | * conditions are met: | |
16 | * | |
17 | * - Redistributions of source code must retain the above | |
18 | * copyright notice, this list of conditions and the following | |
19 | * disclaimer. | |
20 | * | |
21 | * - Redistributions in binary form must reproduce the above | |
22 | * copyright notice, this list of conditions and the following | |
23 | * disclaimer in the documentation and/or other materials | |
24 | * provided with the distribution. | |
25 | * | |
26 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
27 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
28 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
29 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
30 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
31 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
32 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
33 | * SOFTWARE. | |
34 | * | |
35 | * $Id: ib_cm.h 2730 2005-06-28 16:43:03Z sean.hefty $ | |
36 | */ | |
37 | #if !defined(IB_CM_H) | |
38 | #define IB_CM_H | |
39 | ||
a4d61e84 RD |
40 | #include <rdma/ib_mad.h> |
41 | #include <rdma/ib_sa.h> | |
c3e01647 HR |
42 | |
43 | enum ib_cm_state { | |
44 | IB_CM_IDLE, | |
45 | IB_CM_LISTEN, | |
46 | IB_CM_REQ_SENT, | |
47 | IB_CM_REQ_RCVD, | |
48 | IB_CM_MRA_REQ_SENT, | |
49 | IB_CM_MRA_REQ_RCVD, | |
50 | IB_CM_REP_SENT, | |
51 | IB_CM_REP_RCVD, | |
52 | IB_CM_MRA_REP_SENT, | |
53 | IB_CM_MRA_REP_RCVD, | |
54 | IB_CM_ESTABLISHED, | |
55 | IB_CM_DREQ_SENT, | |
56 | IB_CM_DREQ_RCVD, | |
57 | IB_CM_TIMEWAIT, | |
58 | IB_CM_SIDR_REQ_SENT, | |
59 | IB_CM_SIDR_REQ_RCVD | |
60 | }; | |
61 | ||
62 | enum ib_cm_lap_state { | |
63 | IB_CM_LAP_IDLE, | |
64 | IB_CM_LAP_SENT, | |
65 | IB_CM_LAP_RCVD, | |
66 | IB_CM_MRA_LAP_SENT, | |
67 | IB_CM_MRA_LAP_RCVD, | |
68 | }; | |
69 | ||
70 | enum ib_cm_event_type { | |
71 | IB_CM_REQ_ERROR, | |
72 | IB_CM_REQ_RECEIVED, | |
73 | IB_CM_REP_ERROR, | |
74 | IB_CM_REP_RECEIVED, | |
75 | IB_CM_RTU_RECEIVED, | |
76 | IB_CM_USER_ESTABLISHED, | |
77 | IB_CM_DREQ_ERROR, | |
78 | IB_CM_DREQ_RECEIVED, | |
79 | IB_CM_DREP_RECEIVED, | |
80 | IB_CM_TIMEWAIT_EXIT, | |
81 | IB_CM_MRA_RECEIVED, | |
82 | IB_CM_REJ_RECEIVED, | |
83 | IB_CM_LAP_ERROR, | |
84 | IB_CM_LAP_RECEIVED, | |
85 | IB_CM_APR_RECEIVED, | |
86 | IB_CM_SIDR_REQ_ERROR, | |
87 | IB_CM_SIDR_REQ_RECEIVED, | |
88 | IB_CM_SIDR_REP_RECEIVED | |
89 | }; | |
90 | ||
91 | enum ib_cm_data_size { | |
92 | IB_CM_REQ_PRIVATE_DATA_SIZE = 92, | |
93 | IB_CM_MRA_PRIVATE_DATA_SIZE = 222, | |
94 | IB_CM_REJ_PRIVATE_DATA_SIZE = 148, | |
95 | IB_CM_REP_PRIVATE_DATA_SIZE = 196, | |
96 | IB_CM_RTU_PRIVATE_DATA_SIZE = 224, | |
97 | IB_CM_DREQ_PRIVATE_DATA_SIZE = 220, | |
98 | IB_CM_DREP_PRIVATE_DATA_SIZE = 224, | |
99 | IB_CM_REJ_ARI_LENGTH = 72, | |
100 | IB_CM_LAP_PRIVATE_DATA_SIZE = 168, | |
101 | IB_CM_APR_PRIVATE_DATA_SIZE = 148, | |
102 | IB_CM_APR_INFO_LENGTH = 72, | |
103 | IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE = 216, | |
104 | IB_CM_SIDR_REP_PRIVATE_DATA_SIZE = 136, | |
105 | IB_CM_SIDR_REP_INFO_LENGTH = 72 | |
106 | }; | |
107 | ||
108 | struct ib_cm_id; | |
109 | ||
110 | struct ib_cm_req_event_param { | |
111 | struct ib_cm_id *listen_id; | |
c3e01647 HR |
112 | u8 port; |
113 | ||
114 | struct ib_sa_path_rec *primary_path; | |
115 | struct ib_sa_path_rec *alternate_path; | |
116 | ||
97f52eb4 | 117 | __be64 remote_ca_guid; |
c3e01647 HR |
118 | u32 remote_qkey; |
119 | u32 remote_qpn; | |
120 | enum ib_qp_type qp_type; | |
121 | ||
122 | u32 starting_psn; | |
123 | u8 responder_resources; | |
124 | u8 initiator_depth; | |
125 | unsigned int local_cm_response_timeout:5; | |
126 | unsigned int flow_control:1; | |
127 | unsigned int remote_cm_response_timeout:5; | |
128 | unsigned int retry_count:3; | |
129 | unsigned int rnr_retry_count:3; | |
130 | unsigned int srq:1; | |
131 | }; | |
132 | ||
133 | struct ib_cm_rep_event_param { | |
97f52eb4 | 134 | __be64 remote_ca_guid; |
c3e01647 HR |
135 | u32 remote_qkey; |
136 | u32 remote_qpn; | |
137 | u32 starting_psn; | |
138 | u8 responder_resources; | |
139 | u8 initiator_depth; | |
140 | unsigned int target_ack_delay:5; | |
141 | unsigned int failover_accepted:2; | |
142 | unsigned int flow_control:1; | |
143 | unsigned int rnr_retry_count:3; | |
144 | unsigned int srq:1; | |
145 | }; | |
146 | ||
147 | enum ib_cm_rej_reason { | |
97f52eb4 SH |
148 | IB_CM_REJ_NO_QP = 1, |
149 | IB_CM_REJ_NO_EEC = 2, | |
150 | IB_CM_REJ_NO_RESOURCES = 3, | |
151 | IB_CM_REJ_TIMEOUT = 4, | |
152 | IB_CM_REJ_UNSUPPORTED = 5, | |
153 | IB_CM_REJ_INVALID_COMM_ID = 6, | |
154 | IB_CM_REJ_INVALID_COMM_INSTANCE = 7, | |
155 | IB_CM_REJ_INVALID_SERVICE_ID = 8, | |
156 | IB_CM_REJ_INVALID_TRANSPORT_TYPE = 9, | |
157 | IB_CM_REJ_STALE_CONN = 10, | |
158 | IB_CM_REJ_RDC_NOT_EXIST = 11, | |
159 | IB_CM_REJ_INVALID_GID = 12, | |
160 | IB_CM_REJ_INVALID_LID = 13, | |
161 | IB_CM_REJ_INVALID_SL = 14, | |
162 | IB_CM_REJ_INVALID_TRAFFIC_CLASS = 15, | |
163 | IB_CM_REJ_INVALID_HOP_LIMIT = 16, | |
164 | IB_CM_REJ_INVALID_PACKET_RATE = 17, | |
165 | IB_CM_REJ_INVALID_ALT_GID = 18, | |
166 | IB_CM_REJ_INVALID_ALT_LID = 19, | |
167 | IB_CM_REJ_INVALID_ALT_SL = 20, | |
168 | IB_CM_REJ_INVALID_ALT_TRAFFIC_CLASS = 21, | |
169 | IB_CM_REJ_INVALID_ALT_HOP_LIMIT = 22, | |
170 | IB_CM_REJ_INVALID_ALT_PACKET_RATE = 23, | |
171 | IB_CM_REJ_PORT_CM_REDIRECT = 24, | |
172 | IB_CM_REJ_PORT_REDIRECT = 25, | |
173 | IB_CM_REJ_INVALID_MTU = 26, | |
174 | IB_CM_REJ_INSUFFICIENT_RESP_RESOURCES = 27, | |
175 | IB_CM_REJ_CONSUMER_DEFINED = 28, | |
176 | IB_CM_REJ_INVALID_RNR_RETRY = 29, | |
177 | IB_CM_REJ_DUPLICATE_LOCAL_COMM_ID = 30, | |
178 | IB_CM_REJ_INVALID_CLASS_VERSION = 31, | |
179 | IB_CM_REJ_INVALID_FLOW_LABEL = 32, | |
180 | IB_CM_REJ_INVALID_ALT_FLOW_LABEL = 33 | |
c3e01647 HR |
181 | }; |
182 | ||
183 | struct ib_cm_rej_event_param { | |
184 | enum ib_cm_rej_reason reason; | |
185 | void *ari; | |
186 | u8 ari_length; | |
187 | }; | |
188 | ||
189 | struct ib_cm_mra_event_param { | |
190 | u8 service_timeout; | |
191 | }; | |
192 | ||
193 | struct ib_cm_lap_event_param { | |
194 | struct ib_sa_path_rec *alternate_path; | |
195 | }; | |
196 | ||
197 | enum ib_cm_apr_status { | |
198 | IB_CM_APR_SUCCESS, | |
199 | IB_CM_APR_INVALID_COMM_ID, | |
200 | IB_CM_APR_UNSUPPORTED, | |
201 | IB_CM_APR_REJECT, | |
202 | IB_CM_APR_REDIRECT, | |
203 | IB_CM_APR_IS_CURRENT, | |
204 | IB_CM_APR_INVALID_QPN_EECN, | |
205 | IB_CM_APR_INVALID_LID, | |
206 | IB_CM_APR_INVALID_GID, | |
207 | IB_CM_APR_INVALID_FLOW_LABEL, | |
208 | IB_CM_APR_INVALID_TCLASS, | |
209 | IB_CM_APR_INVALID_HOP_LIMIT, | |
210 | IB_CM_APR_INVALID_PACKET_RATE, | |
211 | IB_CM_APR_INVALID_SL | |
212 | }; | |
213 | ||
214 | struct ib_cm_apr_event_param { | |
215 | enum ib_cm_apr_status ap_status; | |
216 | void *apr_info; | |
217 | u8 info_len; | |
218 | }; | |
219 | ||
220 | struct ib_cm_sidr_req_event_param { | |
221 | struct ib_cm_id *listen_id; | |
c3e01647 | 222 | u8 port; |
97f52eb4 | 223 | u16 pkey; |
c3e01647 HR |
224 | }; |
225 | ||
226 | enum ib_cm_sidr_status { | |
227 | IB_SIDR_SUCCESS, | |
228 | IB_SIDR_UNSUPPORTED, | |
229 | IB_SIDR_REJECT, | |
230 | IB_SIDR_NO_QP, | |
231 | IB_SIDR_REDIRECT, | |
232 | IB_SIDR_UNSUPPORTED_VERSION | |
233 | }; | |
234 | ||
235 | struct ib_cm_sidr_rep_event_param { | |
236 | enum ib_cm_sidr_status status; | |
237 | u32 qkey; | |
238 | u32 qpn; | |
239 | void *info; | |
240 | u8 info_len; | |
241 | ||
242 | }; | |
243 | ||
244 | struct ib_cm_event { | |
245 | enum ib_cm_event_type event; | |
246 | union { | |
247 | struct ib_cm_req_event_param req_rcvd; | |
248 | struct ib_cm_rep_event_param rep_rcvd; | |
249 | /* No data for RTU received events. */ | |
250 | struct ib_cm_rej_event_param rej_rcvd; | |
251 | struct ib_cm_mra_event_param mra_rcvd; | |
252 | struct ib_cm_lap_event_param lap_rcvd; | |
253 | struct ib_cm_apr_event_param apr_rcvd; | |
254 | /* No data for DREQ/DREP received events. */ | |
255 | struct ib_cm_sidr_req_event_param sidr_req_rcvd; | |
256 | struct ib_cm_sidr_rep_event_param sidr_rep_rcvd; | |
257 | enum ib_wc_status send_status; | |
258 | } param; | |
259 | ||
260 | void *private_data; | |
261 | }; | |
262 | ||
263 | /** | |
264 | * ib_cm_handler - User-defined callback to process communication events. | |
265 | * @cm_id: Communication identifier associated with the reported event. | |
266 | * @event: Information about the communication event. | |
267 | * | |
268 | * IB_CM_REQ_RECEIVED and IB_CM_SIDR_REQ_RECEIVED communication events | |
269 | * generated as a result of listen requests result in the allocation of a | |
270 | * new @cm_id. The new @cm_id is returned to the user through this callback. | |
271 | * Clients are responsible for destroying the new @cm_id. For peer-to-peer | |
272 | * IB_CM_REQ_RECEIVED and all other events, the returned @cm_id corresponds | |
273 | * to a user's existing communication identifier. | |
274 | * | |
275 | * Users may not call ib_destroy_cm_id while in the context of this callback; | |
276 | * however, returning a non-zero value instructs the communication manager to | |
277 | * destroy the @cm_id after the callback completes. | |
278 | */ | |
279 | typedef int (*ib_cm_handler)(struct ib_cm_id *cm_id, | |
280 | struct ib_cm_event *event); | |
281 | ||
282 | struct ib_cm_id { | |
283 | ib_cm_handler cm_handler; | |
284 | void *context; | |
07d357d0 | 285 | struct ib_device *device; |
97f52eb4 SH |
286 | __be64 service_id; |
287 | __be64 service_mask; | |
c3e01647 HR |
288 | enum ib_cm_state state; /* internal CM/debug use */ |
289 | enum ib_cm_lap_state lap_state; /* internal CM/debug use */ | |
97f52eb4 SH |
290 | __be32 local_id; |
291 | __be32 remote_id; | |
354ba39c | 292 | u32 remote_cm_qpn; /* 1 unless redirected */ |
c3e01647 HR |
293 | }; |
294 | ||
295 | /** | |
296 | * ib_create_cm_id - Allocate a communication identifier. | |
07d357d0 SH |
297 | * @device: Device associated with the cm_id. All related communication will |
298 | * be associated with the specified device. | |
c3e01647 HR |
299 | * @cm_handler: Callback invoked to notify the user of CM events. |
300 | * @context: User specified context associated with the communication | |
301 | * identifier. | |
302 | * | |
303 | * Communication identifiers are used to track connection states, service | |
304 | * ID resolution requests, and listen requests. | |
305 | */ | |
07d357d0 SH |
306 | struct ib_cm_id *ib_create_cm_id(struct ib_device *device, |
307 | ib_cm_handler cm_handler, | |
c3e01647 HR |
308 | void *context); |
309 | ||
310 | /** | |
311 | * ib_destroy_cm_id - Destroy a connection identifier. | |
312 | * @cm_id: Connection identifier to destroy. | |
313 | * | |
314 | * This call blocks until the connection identifier is destroyed. | |
315 | */ | |
316 | void ib_destroy_cm_id(struct ib_cm_id *cm_id); | |
317 | ||
318 | #define IB_SERVICE_ID_AGN_MASK __constant_cpu_to_be64(0xFF00000000000000ULL) | |
319 | #define IB_CM_ASSIGN_SERVICE_ID __constant_cpu_to_be64(0x0200000000000000ULL) | |
320 | ||
321 | /** | |
322 | * ib_cm_listen - Initiates listening on the specified service ID for | |
323 | * connection and service ID resolution requests. | |
324 | * @cm_id: Connection identifier associated with the listen request. | |
325 | * @service_id: Service identifier matched against incoming connection | |
326 | * and service ID resolution requests. The service ID should be specified | |
327 | * network-byte order. If set to IB_CM_ASSIGN_SERVICE_ID, the CM will | |
328 | * assign a service ID to the caller. | |
329 | * @service_mask: Mask applied to service ID used to listen across a | |
330 | * range of service IDs. If set to 0, the service ID is matched | |
331 | * exactly. This parameter is ignored if %service_id is set to | |
332 | * IB_CM_ASSIGN_SERVICE_ID. | |
333 | */ | |
334 | int ib_cm_listen(struct ib_cm_id *cm_id, | |
97f52eb4 SH |
335 | __be64 service_id, |
336 | __be64 service_mask); | |
c3e01647 HR |
337 | |
338 | struct ib_cm_req_param { | |
339 | struct ib_sa_path_rec *primary_path; | |
340 | struct ib_sa_path_rec *alternate_path; | |
97f52eb4 | 341 | __be64 service_id; |
c3e01647 HR |
342 | u32 qp_num; |
343 | enum ib_qp_type qp_type; | |
344 | u32 starting_psn; | |
345 | const void *private_data; | |
346 | u8 private_data_len; | |
347 | u8 peer_to_peer; | |
348 | u8 responder_resources; | |
349 | u8 initiator_depth; | |
350 | u8 remote_cm_response_timeout; | |
351 | u8 flow_control; | |
352 | u8 local_cm_response_timeout; | |
353 | u8 retry_count; | |
354 | u8 rnr_retry_count; | |
355 | u8 max_cm_retries; | |
356 | u8 srq; | |
357 | }; | |
358 | ||
359 | /** | |
360 | * ib_send_cm_req - Sends a connection request to the remote node. | |
361 | * @cm_id: Connection identifier that will be associated with the | |
362 | * connection request. | |
363 | * @param: Connection request information needed to establish the | |
364 | * connection. | |
365 | */ | |
366 | int ib_send_cm_req(struct ib_cm_id *cm_id, | |
367 | struct ib_cm_req_param *param); | |
368 | ||
369 | struct ib_cm_rep_param { | |
370 | u32 qp_num; | |
371 | u32 starting_psn; | |
372 | const void *private_data; | |
373 | u8 private_data_len; | |
374 | u8 responder_resources; | |
375 | u8 initiator_depth; | |
376 | u8 target_ack_delay; | |
377 | u8 failover_accepted; | |
378 | u8 flow_control; | |
379 | u8 rnr_retry_count; | |
380 | u8 srq; | |
381 | }; | |
382 | ||
383 | /** | |
384 | * ib_send_cm_rep - Sends a connection reply in response to a connection | |
385 | * request. | |
386 | * @cm_id: Connection identifier that will be associated with the | |
387 | * connection request. | |
388 | * @param: Connection reply information needed to establish the | |
389 | * connection. | |
390 | */ | |
391 | int ib_send_cm_rep(struct ib_cm_id *cm_id, | |
392 | struct ib_cm_rep_param *param); | |
393 | ||
394 | /** | |
395 | * ib_send_cm_rtu - Sends a connection ready to use message in response | |
396 | * to a connection reply message. | |
397 | * @cm_id: Connection identifier associated with the connection request. | |
398 | * @private_data: Optional user-defined private data sent with the | |
399 | * ready to use message. | |
400 | * @private_data_len: Size of the private data buffer, in bytes. | |
401 | */ | |
402 | int ib_send_cm_rtu(struct ib_cm_id *cm_id, | |
403 | const void *private_data, | |
404 | u8 private_data_len); | |
405 | ||
406 | /** | |
407 | * ib_send_cm_dreq - Sends a disconnection request for an existing | |
408 | * connection. | |
409 | * @cm_id: Connection identifier associated with the connection being | |
410 | * released. | |
411 | * @private_data: Optional user-defined private data sent with the | |
412 | * disconnection request message. | |
413 | * @private_data_len: Size of the private data buffer, in bytes. | |
414 | */ | |
415 | int ib_send_cm_dreq(struct ib_cm_id *cm_id, | |
416 | const void *private_data, | |
417 | u8 private_data_len); | |
418 | ||
419 | /** | |
420 | * ib_send_cm_drep - Sends a disconnection reply to a disconnection request. | |
421 | * @cm_id: Connection identifier associated with the connection being | |
422 | * released. | |
423 | * @private_data: Optional user-defined private data sent with the | |
424 | * disconnection reply message. | |
425 | * @private_data_len: Size of the private data buffer, in bytes. | |
426 | * | |
427 | * If the cm_id is in the correct state, the CM will transition the connection | |
428 | * to the timewait state, even if an error occurs sending the DREP message. | |
429 | */ | |
430 | int ib_send_cm_drep(struct ib_cm_id *cm_id, | |
431 | const void *private_data, | |
432 | u8 private_data_len); | |
433 | ||
434 | /** | |
435 | * ib_cm_establish - Forces a connection state to established. | |
436 | * @cm_id: Connection identifier to transition to established. | |
437 | * | |
438 | * This routine should be invoked by users who receive messages on a | |
439 | * connected QP before an RTU has been received. | |
440 | */ | |
441 | int ib_cm_establish(struct ib_cm_id *cm_id); | |
442 | ||
443 | /** | |
444 | * ib_send_cm_rej - Sends a connection rejection message to the | |
445 | * remote node. | |
446 | * @cm_id: Connection identifier associated with the connection being | |
447 | * rejected. | |
448 | * @reason: Reason for the connection request rejection. | |
449 | * @ari: Optional additional rejection information. | |
450 | * @ari_length: Size of the additional rejection information, in bytes. | |
451 | * @private_data: Optional user-defined private data sent with the | |
452 | * rejection message. | |
453 | * @private_data_len: Size of the private data buffer, in bytes. | |
454 | */ | |
455 | int ib_send_cm_rej(struct ib_cm_id *cm_id, | |
456 | enum ib_cm_rej_reason reason, | |
457 | void *ari, | |
458 | u8 ari_length, | |
459 | const void *private_data, | |
460 | u8 private_data_len); | |
461 | ||
462 | /** | |
463 | * ib_send_cm_mra - Sends a message receipt acknowledgement to a connection | |
464 | * message. | |
465 | * @cm_id: Connection identifier associated with the connection message. | |
466 | * @service_timeout: The maximum time required for the sender to reply to | |
467 | * to the connection message. | |
468 | * @private_data: Optional user-defined private data sent with the | |
469 | * message receipt acknowledgement. | |
470 | * @private_data_len: Size of the private data buffer, in bytes. | |
471 | */ | |
472 | int ib_send_cm_mra(struct ib_cm_id *cm_id, | |
473 | u8 service_timeout, | |
474 | const void *private_data, | |
475 | u8 private_data_len); | |
476 | ||
477 | /** | |
478 | * ib_send_cm_lap - Sends a load alternate path request. | |
479 | * @cm_id: Connection identifier associated with the load alternate path | |
480 | * message. | |
481 | * @alternate_path: A path record that identifies the alternate path to | |
482 | * load. | |
483 | * @private_data: Optional user-defined private data sent with the | |
484 | * load alternate path message. | |
485 | * @private_data_len: Size of the private data buffer, in bytes. | |
486 | */ | |
487 | int ib_send_cm_lap(struct ib_cm_id *cm_id, | |
488 | struct ib_sa_path_rec *alternate_path, | |
489 | const void *private_data, | |
490 | u8 private_data_len); | |
491 | ||
492 | /** | |
493 | * ib_cm_init_qp_attr - Initializes the QP attributes for use in transitioning | |
494 | * to a specified QP state. | |
495 | * @cm_id: Communication identifier associated with the QP attributes to | |
496 | * initialize. | |
497 | * @qp_attr: On input, specifies the desired QP state. On output, the | |
498 | * mandatory and desired optional attributes will be set in order to | |
499 | * modify the QP to the specified state. | |
500 | * @qp_attr_mask: The QP attribute mask that may be used to transition the | |
501 | * QP to the specified state. | |
502 | * | |
503 | * Users must set the @qp_attr->qp_state to the desired QP state. This call | |
504 | * will set all required attributes for the given transition, along with | |
505 | * known optional attributes. Users may override the attributes returned from | |
506 | * this call before calling ib_modify_qp. | |
507 | */ | |
508 | int ib_cm_init_qp_attr(struct ib_cm_id *cm_id, | |
509 | struct ib_qp_attr *qp_attr, | |
510 | int *qp_attr_mask); | |
511 | ||
512 | /** | |
513 | * ib_send_cm_apr - Sends an alternate path response message in response to | |
514 | * a load alternate path request. | |
515 | * @cm_id: Connection identifier associated with the alternate path response. | |
516 | * @status: Reply status sent with the alternate path response. | |
517 | * @info: Optional additional information sent with the alternate path | |
518 | * response. | |
519 | * @info_length: Size of the additional information, in bytes. | |
520 | * @private_data: Optional user-defined private data sent with the | |
521 | * alternate path response message. | |
522 | * @private_data_len: Size of the private data buffer, in bytes. | |
523 | */ | |
524 | int ib_send_cm_apr(struct ib_cm_id *cm_id, | |
525 | enum ib_cm_apr_status status, | |
526 | void *info, | |
527 | u8 info_length, | |
528 | const void *private_data, | |
529 | u8 private_data_len); | |
530 | ||
531 | struct ib_cm_sidr_req_param { | |
532 | struct ib_sa_path_rec *path; | |
97f52eb4 | 533 | __be64 service_id; |
c3e01647 HR |
534 | int timeout_ms; |
535 | const void *private_data; | |
536 | u8 private_data_len; | |
537 | u8 max_cm_retries; | |
538 | u16 pkey; | |
539 | }; | |
540 | ||
541 | /** | |
542 | * ib_send_cm_sidr_req - Sends a service ID resolution request to the | |
543 | * remote node. | |
544 | * @cm_id: Communication identifier that will be associated with the | |
545 | * service ID resolution request. | |
546 | * @param: Service ID resolution request information. | |
547 | */ | |
548 | int ib_send_cm_sidr_req(struct ib_cm_id *cm_id, | |
549 | struct ib_cm_sidr_req_param *param); | |
550 | ||
551 | struct ib_cm_sidr_rep_param { | |
552 | u32 qp_num; | |
553 | u32 qkey; | |
554 | enum ib_cm_sidr_status status; | |
555 | const void *info; | |
556 | u8 info_length; | |
557 | const void *private_data; | |
558 | u8 private_data_len; | |
559 | }; | |
560 | ||
561 | /** | |
562 | * ib_send_cm_sidr_rep - Sends a service ID resolution request to the | |
563 | * remote node. | |
564 | * @cm_id: Communication identifier associated with the received service ID | |
565 | * resolution request. | |
566 | * @param: Service ID resolution reply information. | |
567 | */ | |
568 | int ib_send_cm_sidr_rep(struct ib_cm_id *cm_id, | |
569 | struct ib_cm_sidr_rep_param *param); | |
570 | ||
571 | #endif /* IB_CM_H */ |