1 | /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ |
2 | /* |
3 | * Copyright (c) 2004, 2005 Intel Corporation. All rights reserved. |
4 | * Copyright (c) 2004 Topspin Corporation. All rights reserved. |
5 | * Copyright (c) 2004 Voltaire Corporation. All rights reserved. |
6 | * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. |
7 | * Copyright (c) 2019, Mellanox Technologies inc. All rights reserved. |
8 | */ |
9 | |
10 | #ifndef IB_CM_H |
11 | #define IB_CM_H |
12 | |
13 | #include <rdma/ib_mad.h> |
14 | #include <rdma/ib_sa.h> |
15 | #include <rdma/rdma_cm.h> |
16 | |
17 | enum ib_cm_state { |
18 | IB_CM_IDLE, |
19 | IB_CM_LISTEN, |
20 | IB_CM_REQ_SENT, |
21 | IB_CM_REQ_RCVD, |
22 | IB_CM_MRA_REQ_SENT, |
23 | IB_CM_MRA_REQ_RCVD, |
24 | IB_CM_REP_SENT, |
25 | IB_CM_REP_RCVD, |
26 | IB_CM_MRA_REP_SENT, |
27 | IB_CM_MRA_REP_RCVD, |
28 | IB_CM_ESTABLISHED, |
29 | IB_CM_DREQ_SENT, |
30 | IB_CM_DREQ_RCVD, |
31 | IB_CM_TIMEWAIT, |
32 | IB_CM_SIDR_REQ_SENT, |
33 | IB_CM_SIDR_REQ_RCVD |
34 | }; |
35 | |
36 | enum ib_cm_lap_state { |
37 | IB_CM_LAP_UNINIT, |
38 | IB_CM_LAP_IDLE, |
39 | IB_CM_LAP_SENT, |
40 | IB_CM_LAP_RCVD, |
41 | IB_CM_MRA_LAP_SENT, |
42 | IB_CM_MRA_LAP_RCVD, |
43 | }; |
44 | |
45 | enum ib_cm_event_type { |
46 | IB_CM_REQ_ERROR, |
47 | IB_CM_REQ_RECEIVED, |
48 | IB_CM_REP_ERROR, |
49 | IB_CM_REP_RECEIVED, |
50 | IB_CM_RTU_RECEIVED, |
51 | IB_CM_USER_ESTABLISHED, |
52 | IB_CM_DREQ_ERROR, |
53 | IB_CM_DREQ_RECEIVED, |
54 | IB_CM_DREP_RECEIVED, |
55 | IB_CM_TIMEWAIT_EXIT, |
56 | IB_CM_MRA_RECEIVED, |
57 | IB_CM_REJ_RECEIVED, |
58 | IB_CM_LAP_ERROR, |
59 | IB_CM_LAP_RECEIVED, |
60 | IB_CM_APR_RECEIVED, |
61 | IB_CM_SIDR_REQ_ERROR, |
62 | IB_CM_SIDR_REQ_RECEIVED, |
63 | IB_CM_SIDR_REP_RECEIVED |
64 | }; |
65 | |
66 | enum ib_cm_data_size { |
67 | IB_CM_REQ_PRIVATE_DATA_SIZE = 92, |
68 | IB_CM_MRA_PRIVATE_DATA_SIZE = 222, |
69 | IB_CM_REJ_PRIVATE_DATA_SIZE = 148, |
70 | IB_CM_REP_PRIVATE_DATA_SIZE = 196, |
71 | IB_CM_RTU_PRIVATE_DATA_SIZE = 224, |
72 | IB_CM_DREQ_PRIVATE_DATA_SIZE = 220, |
73 | IB_CM_DREP_PRIVATE_DATA_SIZE = 224, |
74 | IB_CM_REJ_ARI_LENGTH = 72, |
75 | IB_CM_LAP_PRIVATE_DATA_SIZE = 168, |
76 | IB_CM_APR_PRIVATE_DATA_SIZE = 148, |
77 | IB_CM_APR_INFO_LENGTH = 72, |
78 | IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE = 216, |
79 | IB_CM_SIDR_REP_PRIVATE_DATA_SIZE = 136, |
80 | IB_CM_SIDR_REP_INFO_LENGTH = 72, |
81 | }; |
82 | |
83 | struct ib_cm_id; |
84 | |
85 | struct ib_cm_req_event_param { |
86 | struct ib_cm_id *listen_id; |
87 | |
88 | /* P_Key that was used by the GMP's BTH header */ |
89 | u16 bth_pkey; |
90 | |
91 | u8 port; |
92 | |
93 | struct sa_path_rec *primary_path; |
94 | struct sa_path_rec *alternate_path; |
95 | |
96 | /* |
97 | * SGID attribute of the primary path. Currently only |
98 | * useful for RoCE. Alternate path GID attributes |
99 | * are not yet supported. |
100 | */ |
101 | const struct ib_gid_attr *ppath_sgid_attr; |
102 | |
103 | __be64 remote_ca_guid; |
104 | u32 remote_qkey; |
105 | u32 remote_qpn; |
106 | enum ib_qp_type qp_type; |
107 | |
108 | u32 starting_psn; |
109 | u8 responder_resources; |
110 | u8 initiator_depth; |
111 | unsigned int local_cm_response_timeout:5; |
112 | unsigned int flow_control:1; |
113 | unsigned int remote_cm_response_timeout:5; |
114 | unsigned int retry_count:3; |
115 | unsigned int rnr_retry_count:3; |
116 | unsigned int srq:1; |
117 | struct rdma_ucm_ece ece; |
118 | }; |
119 | |
120 | struct ib_cm_rep_event_param { |
121 | __be64 remote_ca_guid; |
122 | u32 remote_qkey; |
123 | u32 remote_qpn; |
124 | u32 starting_psn; |
125 | u8 responder_resources; |
126 | u8 initiator_depth; |
127 | unsigned int target_ack_delay:5; |
128 | unsigned int failover_accepted:2; |
129 | unsigned int flow_control:1; |
130 | unsigned int rnr_retry_count:3; |
131 | unsigned int srq:1; |
132 | struct rdma_ucm_ece ece; |
133 | }; |
134 | |
135 | enum ib_cm_rej_reason { |
136 | IB_CM_REJ_NO_QP = 1, |
137 | IB_CM_REJ_NO_EEC = 2, |
138 | IB_CM_REJ_NO_RESOURCES = 3, |
139 | IB_CM_REJ_TIMEOUT = 4, |
140 | IB_CM_REJ_UNSUPPORTED = 5, |
141 | IB_CM_REJ_INVALID_COMM_ID = 6, |
142 | IB_CM_REJ_INVALID_COMM_INSTANCE = 7, |
143 | IB_CM_REJ_INVALID_SERVICE_ID = 8, |
144 | IB_CM_REJ_INVALID_TRANSPORT_TYPE = 9, |
145 | IB_CM_REJ_STALE_CONN = 10, |
146 | IB_CM_REJ_RDC_NOT_EXIST = 11, |
147 | IB_CM_REJ_INVALID_GID = 12, |
148 | IB_CM_REJ_INVALID_LID = 13, |
149 | IB_CM_REJ_INVALID_SL = 14, |
150 | IB_CM_REJ_INVALID_TRAFFIC_CLASS = 15, |
151 | IB_CM_REJ_INVALID_HOP_LIMIT = 16, |
152 | IB_CM_REJ_INVALID_PACKET_RATE = 17, |
153 | IB_CM_REJ_INVALID_ALT_GID = 18, |
154 | IB_CM_REJ_INVALID_ALT_LID = 19, |
155 | IB_CM_REJ_INVALID_ALT_SL = 20, |
156 | IB_CM_REJ_INVALID_ALT_TRAFFIC_CLASS = 21, |
157 | IB_CM_REJ_INVALID_ALT_HOP_LIMIT = 22, |
158 | IB_CM_REJ_INVALID_ALT_PACKET_RATE = 23, |
159 | IB_CM_REJ_PORT_CM_REDIRECT = 24, |
160 | IB_CM_REJ_PORT_REDIRECT = 25, |
161 | IB_CM_REJ_INVALID_MTU = 26, |
162 | IB_CM_REJ_INSUFFICIENT_RESP_RESOURCES = 27, |
163 | IB_CM_REJ_CONSUMER_DEFINED = 28, |
164 | IB_CM_REJ_INVALID_RNR_RETRY = 29, |
165 | IB_CM_REJ_DUPLICATE_LOCAL_COMM_ID = 30, |
166 | IB_CM_REJ_INVALID_CLASS_VERSION = 31, |
167 | IB_CM_REJ_INVALID_FLOW_LABEL = 32, |
168 | IB_CM_REJ_INVALID_ALT_FLOW_LABEL = 33, |
169 | IB_CM_REJ_VENDOR_OPTION_NOT_SUPPORTED = 35, |
170 | }; |
171 | |
172 | struct ib_cm_rej_event_param { |
173 | enum ib_cm_rej_reason reason; |
174 | void *ari; |
175 | u8 ari_length; |
176 | }; |
177 | |
178 | struct ib_cm_mra_event_param { |
179 | u8 service_timeout; |
180 | }; |
181 | |
182 | struct ib_cm_lap_event_param { |
183 | struct sa_path_rec *alternate_path; |
184 | }; |
185 | |
186 | enum ib_cm_apr_status { |
187 | IB_CM_APR_SUCCESS, |
188 | IB_CM_APR_INVALID_COMM_ID, |
189 | IB_CM_APR_UNSUPPORTED, |
190 | IB_CM_APR_REJECT, |
191 | IB_CM_APR_REDIRECT, |
192 | IB_CM_APR_IS_CURRENT, |
193 | IB_CM_APR_INVALID_QPN_EECN, |
194 | IB_CM_APR_INVALID_LID, |
195 | IB_CM_APR_INVALID_GID, |
196 | IB_CM_APR_INVALID_FLOW_LABEL, |
197 | IB_CM_APR_INVALID_TCLASS, |
198 | IB_CM_APR_INVALID_HOP_LIMIT, |
199 | IB_CM_APR_INVALID_PACKET_RATE, |
200 | IB_CM_APR_INVALID_SL |
201 | }; |
202 | |
203 | struct ib_cm_apr_event_param { |
204 | enum ib_cm_apr_status ap_status; |
205 | void *apr_info; |
206 | u8 info_len; |
207 | }; |
208 | |
209 | struct ib_cm_sidr_req_event_param { |
210 | struct ib_cm_id *listen_id; |
211 | __be64 service_id; |
212 | |
213 | /* |
214 | * SGID attribute of the request. Currently only |
215 | * useful for RoCE. |
216 | */ |
217 | const struct ib_gid_attr *sgid_attr; |
218 | /* P_Key that was used by the GMP's BTH header */ |
219 | u16 bth_pkey; |
220 | u8 port; |
221 | u16 pkey; |
222 | }; |
223 | |
224 | enum ib_cm_sidr_status { |
225 | IB_SIDR_SUCCESS, |
226 | IB_SIDR_UNSUPPORTED, |
227 | IB_SIDR_REJECT, |
228 | IB_SIDR_NO_QP, |
229 | IB_SIDR_REDIRECT, |
230 | IB_SIDR_UNSUPPORTED_VERSION |
231 | }; |
232 | |
233 | struct ib_cm_sidr_rep_event_param { |
234 | enum ib_cm_sidr_status status; |
235 | u32 qkey; |
236 | u32 qpn; |
237 | void *info; |
238 | const struct ib_gid_attr *sgid_attr; |
239 | u8 info_len; |
240 | }; |
241 | |
242 | struct ib_cm_event { |
243 | enum ib_cm_event_type event; |
244 | union { |
245 | struct ib_cm_req_event_param req_rcvd; |
246 | struct ib_cm_rep_event_param rep_rcvd; |
247 | /* No data for RTU received events. */ |
248 | struct ib_cm_rej_event_param rej_rcvd; |
249 | struct ib_cm_mra_event_param mra_rcvd; |
250 | struct ib_cm_lap_event_param lap_rcvd; |
251 | struct ib_cm_apr_event_param apr_rcvd; |
252 | /* No data for DREQ/DREP received events. */ |
253 | struct ib_cm_sidr_req_event_param sidr_req_rcvd; |
254 | struct ib_cm_sidr_rep_event_param sidr_rep_rcvd; |
255 | enum ib_wc_status send_status; |
256 | } param; |
257 | |
258 | void *private_data; |
259 | }; |
260 | |
261 | #define CM_REQ_ATTR_ID cpu_to_be16(0x0010) |
262 | #define CM_MRA_ATTR_ID cpu_to_be16(0x0011) |
263 | #define CM_REJ_ATTR_ID cpu_to_be16(0x0012) |
264 | #define CM_REP_ATTR_ID cpu_to_be16(0x0013) |
265 | #define CM_RTU_ATTR_ID cpu_to_be16(0x0014) |
266 | #define CM_DREQ_ATTR_ID cpu_to_be16(0x0015) |
267 | #define CM_DREP_ATTR_ID cpu_to_be16(0x0016) |
268 | #define CM_SIDR_REQ_ATTR_ID cpu_to_be16(0x0017) |
269 | #define CM_SIDR_REP_ATTR_ID cpu_to_be16(0x0018) |
270 | #define CM_LAP_ATTR_ID cpu_to_be16(0x0019) |
271 | #define CM_APR_ATTR_ID cpu_to_be16(0x001A) |
272 | |
273 | /** |
274 | * ib_cm_handler - User-defined callback to process communication events. |
275 | * @cm_id: Communication identifier associated with the reported event. |
276 | * @event: Information about the communication event. |
277 | * |
278 | * IB_CM_REQ_RECEIVED and IB_CM_SIDR_REQ_RECEIVED communication events |
279 | * generated as a result of listen requests result in the allocation of a |
280 | * new @cm_id. The new @cm_id is returned to the user through this callback. |
281 | * Clients are responsible for destroying the new @cm_id. For peer-to-peer |
282 | * IB_CM_REQ_RECEIVED and all other events, the returned @cm_id corresponds |
283 | * to a user's existing communication identifier. |
284 | * |
285 | * Users may not call ib_destroy_cm_id while in the context of this callback; |
286 | * however, returning a non-zero value instructs the communication manager to |
287 | * destroy the @cm_id after the callback completes. |
288 | */ |
289 | typedef int (*ib_cm_handler)(struct ib_cm_id *cm_id, |
290 | const struct ib_cm_event *event); |
291 | |
292 | struct ib_cm_id { |
293 | ib_cm_handler cm_handler; |
294 | void *context; |
295 | struct ib_device *device; |
296 | __be64 service_id; |
297 | enum ib_cm_state state; /* internal CM/debug use */ |
298 | enum ib_cm_lap_state lap_state; /* internal CM/debug use */ |
299 | __be32 local_id; |
300 | __be32 remote_id; |
301 | u32 remote_cm_qpn; /* 1 unless redirected */ |
302 | }; |
303 | |
304 | /** |
305 | * ib_create_cm_id - Allocate a communication identifier. |
306 | * @device: Device associated with the cm_id. All related communication will |
307 | * be associated with the specified device. |
308 | * @cm_handler: Callback invoked to notify the user of CM events. |
309 | * @context: User specified context associated with the communication |
310 | * identifier. |
311 | * |
312 | * Communication identifiers are used to track connection states, service |
313 | * ID resolution requests, and listen requests. |
314 | */ |
315 | struct ib_cm_id *ib_create_cm_id(struct ib_device *device, |
316 | ib_cm_handler cm_handler, |
317 | void *context); |
318 | |
319 | /** |
320 | * ib_destroy_cm_id - Destroy a connection identifier. |
321 | * @cm_id: Connection identifier to destroy. |
322 | * |
323 | * This call blocks until the connection identifier is destroyed. |
324 | */ |
325 | void ib_destroy_cm_id(struct ib_cm_id *cm_id); |
326 | |
327 | #define IB_SERVICE_ID_AGN_MASK cpu_to_be64(0xFF00000000000000ULL) |
328 | #define IB_CM_ASSIGN_SERVICE_ID cpu_to_be64(0x0200000000000000ULL) |
329 | #define IB_CMA_SERVICE_ID cpu_to_be64(0x0000000001000000ULL) |
330 | #define IB_CMA_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFF000000ULL) |
331 | #define IB_SDP_SERVICE_ID cpu_to_be64(0x0000000000010000ULL) |
332 | #define IB_SDP_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFFFF0000ULL) |
333 | |
334 | /** |
335 | * ib_cm_listen - Initiates listening on the specified service ID for |
336 | * connection and service ID resolution requests. |
337 | * @cm_id: Connection identifier associated with the listen request. |
338 | * @service_id: Service identifier matched against incoming connection |
339 | * and service ID resolution requests. The service ID should be specified |
340 | * network-byte order. If set to IB_CM_ASSIGN_SERVICE_ID, the CM will |
341 | * assign a service ID to the caller. |
342 | */ |
343 | int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id); |
344 | |
345 | struct ib_cm_id *ib_cm_insert_listen(struct ib_device *device, |
346 | ib_cm_handler cm_handler, |
347 | __be64 service_id); |
348 | |
349 | struct ib_cm_req_param { |
350 | struct sa_path_rec *primary_path; |
351 | struct sa_path_rec *primary_path_inbound; |
352 | struct sa_path_rec *primary_path_outbound; |
353 | struct sa_path_rec *alternate_path; |
354 | const struct ib_gid_attr *ppath_sgid_attr; |
355 | __be64 service_id; |
356 | u32 qp_num; |
357 | enum ib_qp_type qp_type; |
358 | u32 starting_psn; |
359 | const void *private_data; |
360 | u8 private_data_len; |
361 | u8 responder_resources; |
362 | u8 initiator_depth; |
363 | u8 remote_cm_response_timeout; |
364 | u8 flow_control; |
365 | u8 local_cm_response_timeout; |
366 | u8 retry_count; |
367 | u8 rnr_retry_count; |
368 | u8 max_cm_retries; |
369 | u8 srq; |
370 | struct rdma_ucm_ece ece; |
371 | }; |
372 | |
373 | /** |
374 | * ib_send_cm_req - Sends a connection request to the remote node. |
375 | * @cm_id: Connection identifier that will be associated with the |
376 | * connection request. |
377 | * @param: Connection request information needed to establish the |
378 | * connection. |
379 | */ |
380 | int ib_send_cm_req(struct ib_cm_id *cm_id, |
381 | struct ib_cm_req_param *param); |
382 | |
383 | struct ib_cm_rep_param { |
384 | u32 qp_num; |
385 | u32 starting_psn; |
386 | const void *private_data; |
387 | u8 private_data_len; |
388 | u8 responder_resources; |
389 | u8 initiator_depth; |
390 | u8 failover_accepted; |
391 | u8 flow_control; |
392 | u8 rnr_retry_count; |
393 | u8 srq; |
394 | struct rdma_ucm_ece ece; |
395 | }; |
396 | |
397 | /** |
398 | * ib_send_cm_rep - Sends a connection reply in response to a connection |
399 | * request. |
400 | * @cm_id: Connection identifier that will be associated with the |
401 | * connection request. |
402 | * @param: Connection reply information needed to establish the |
403 | * connection. |
404 | */ |
405 | int ib_send_cm_rep(struct ib_cm_id *cm_id, |
406 | struct ib_cm_rep_param *param); |
407 | |
408 | /** |
409 | * ib_send_cm_rtu - Sends a connection ready to use message in response |
410 | * to a connection reply message. |
411 | * @cm_id: Connection identifier associated with the connection request. |
412 | * @private_data: Optional user-defined private data sent with the |
413 | * ready to use message. |
414 | * @private_data_len: Size of the private data buffer, in bytes. |
415 | */ |
416 | int ib_send_cm_rtu(struct ib_cm_id *cm_id, |
417 | const void *private_data, |
418 | u8 private_data_len); |
419 | |
420 | /** |
421 | * ib_send_cm_dreq - Sends a disconnection request for an existing |
422 | * connection. |
423 | * @cm_id: Connection identifier associated with the connection being |
424 | * released. |
425 | * @private_data: Optional user-defined private data sent with the |
426 | * disconnection request message. |
427 | * @private_data_len: Size of the private data buffer, in bytes. |
428 | */ |
429 | int ib_send_cm_dreq(struct ib_cm_id *cm_id, |
430 | const void *private_data, |
431 | u8 private_data_len); |
432 | |
433 | /** |
434 | * ib_send_cm_drep - Sends a disconnection reply to a disconnection request. |
435 | * @cm_id: Connection identifier associated with the connection being |
436 | * released. |
437 | * @private_data: Optional user-defined private data sent with the |
438 | * disconnection reply message. |
439 | * @private_data_len: Size of the private data buffer, in bytes. |
440 | * |
441 | * If the cm_id is in the correct state, the CM will transition the connection |
442 | * to the timewait state, even if an error occurs sending the DREP message. |
443 | */ |
444 | int ib_send_cm_drep(struct ib_cm_id *cm_id, |
445 | const void *private_data, |
446 | u8 private_data_len); |
447 | |
448 | /** |
449 | * ib_cm_notify - Notifies the CM of an event reported to the consumer. |
450 | * @cm_id: Connection identifier to transition to established. |
451 | * @event: Type of event. |
452 | * |
453 | * This routine should be invoked by users to notify the CM of relevant |
454 | * communication events. Events that should be reported to the CM and |
455 | * when to report them are: |
456 | * |
457 | * IB_EVENT_COMM_EST - Used when a message is received on a connected |
458 | * QP before an RTU has been received. |
459 | * IB_EVENT_PATH_MIG - Notifies the CM that the connection has failed over |
460 | * to the alternate path. |
461 | */ |
462 | int ib_cm_notify(struct ib_cm_id *cm_id, enum ib_event_type event); |
463 | |
464 | /** |
465 | * ib_send_cm_rej - Sends a connection rejection message to the |
466 | * remote node. |
467 | * @cm_id: Connection identifier associated with the connection being |
468 | * rejected. |
469 | * @reason: Reason for the connection request rejection. |
470 | * @ari: Optional additional rejection information. |
471 | * @ari_length: Size of the additional rejection information, in bytes. |
472 | * @private_data: Optional user-defined private data sent with the |
473 | * rejection message. |
474 | * @private_data_len: Size of the private data buffer, in bytes. |
475 | */ |
476 | int ib_send_cm_rej(struct ib_cm_id *cm_id, |
477 | enum ib_cm_rej_reason reason, |
478 | void *ari, |
479 | u8 ari_length, |
480 | const void *private_data, |
481 | u8 private_data_len); |
482 | |
483 | #define IB_CM_MRA_FLAG_DELAY 0x80 /* Send MRA only after a duplicate msg */ |
484 | |
485 | /** |
486 | * ib_send_cm_mra - Sends a message receipt acknowledgement to a connection |
487 | * message. |
488 | * @cm_id: Connection identifier associated with the connection message. |
489 | * @service_timeout: The lower 5-bits specify the maximum time required for |
490 | * the sender to reply to the connection message. The upper 3-bits |
491 | * specify additional control flags. |
492 | * @private_data: Optional user-defined private data sent with the |
493 | * message receipt acknowledgement. |
494 | * @private_data_len: Size of the private data buffer, in bytes. |
495 | */ |
496 | int ib_send_cm_mra(struct ib_cm_id *cm_id, |
497 | u8 service_timeout, |
498 | const void *private_data, |
499 | u8 private_data_len); |
500 | |
501 | /** |
502 | * ib_cm_init_qp_attr - Initializes the QP attributes for use in transitioning |
503 | * to a specified QP state. |
504 | * @cm_id: Communication identifier associated with the QP attributes to |
505 | * initialize. |
506 | * @qp_attr: On input, specifies the desired QP state. On output, the |
507 | * mandatory and desired optional attributes will be set in order to |
508 | * modify the QP to the specified state. |
509 | * @qp_attr_mask: The QP attribute mask that may be used to transition the |
510 | * QP to the specified state. |
511 | * |
512 | * Users must set the @qp_attr->qp_state to the desired QP state. This call |
513 | * will set all required attributes for the given transition, along with |
514 | * known optional attributes. Users may override the attributes returned from |
515 | * this call before calling ib_modify_qp. |
516 | */ |
517 | int ib_cm_init_qp_attr(struct ib_cm_id *cm_id, |
518 | struct ib_qp_attr *qp_attr, |
519 | int *qp_attr_mask); |
520 | |
521 | struct ib_cm_sidr_req_param { |
522 | struct sa_path_rec *path; |
523 | const struct ib_gid_attr *sgid_attr; |
524 | __be64 service_id; |
525 | unsigned long timeout_ms; |
526 | const void *private_data; |
527 | u8 private_data_len; |
528 | u8 max_cm_retries; |
529 | }; |
530 | |
531 | /** |
532 | * ib_send_cm_sidr_req - Sends a service ID resolution request to the |
533 | * remote node. |
534 | * @cm_id: Communication identifier that will be associated with the |
535 | * service ID resolution request. |
536 | * @param: Service ID resolution request information. |
537 | */ |
538 | int ib_send_cm_sidr_req(struct ib_cm_id *cm_id, |
539 | struct ib_cm_sidr_req_param *param); |
540 | |
541 | struct ib_cm_sidr_rep_param { |
542 | u32 qp_num; |
543 | u32 qkey; |
544 | enum ib_cm_sidr_status status; |
545 | const void *info; |
546 | u8 info_length; |
547 | const void *private_data; |
548 | u8 private_data_len; |
549 | struct rdma_ucm_ece ece; |
550 | }; |
551 | |
552 | /** |
553 | * ib_send_cm_sidr_rep - Sends a service ID resolution reply to the |
554 | * remote node. |
555 | * @cm_id: Communication identifier associated with the received service ID |
556 | * resolution request. |
557 | * @param: Service ID resolution reply information. |
558 | */ |
559 | int ib_send_cm_sidr_rep(struct ib_cm_id *cm_id, |
560 | struct ib_cm_sidr_rep_param *param); |
561 | |
562 | /** |
563 | * ibcm_reject_msg - return a pointer to a reject message string. |
564 | * @reason: Value returned in the REJECT event status field. |
565 | */ |
566 | const char *__attribute_const__ ibcm_reject_msg(int reason); |
567 | |
568 | #endif /* IB_CM_H */ |
569 | |