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35#if !defined(IB_CM_H)
36#define IB_CM_H
37
38#include <rdma/ib_mad.h>
39#include <rdma/ib_sa.h>
40
41
42extern struct class cm_class;
43
44enum ib_cm_state {
45 IB_CM_IDLE,
46 IB_CM_LISTEN,
47 IB_CM_REQ_SENT,
48 IB_CM_REQ_RCVD,
49 IB_CM_MRA_REQ_SENT,
50 IB_CM_MRA_REQ_RCVD,
51 IB_CM_REP_SENT,
52 IB_CM_REP_RCVD,
53 IB_CM_MRA_REP_SENT,
54 IB_CM_MRA_REP_RCVD,
55 IB_CM_ESTABLISHED,
56 IB_CM_DREQ_SENT,
57 IB_CM_DREQ_RCVD,
58 IB_CM_TIMEWAIT,
59 IB_CM_SIDR_REQ_SENT,
60 IB_CM_SIDR_REQ_RCVD
61};
62
63enum ib_cm_lap_state {
64 IB_CM_LAP_UNINIT,
65 IB_CM_LAP_IDLE,
66 IB_CM_LAP_SENT,
67 IB_CM_LAP_RCVD,
68 IB_CM_MRA_LAP_SENT,
69 IB_CM_MRA_LAP_RCVD,
70};
71
72enum ib_cm_event_type {
73 IB_CM_REQ_ERROR,
74 IB_CM_REQ_RECEIVED,
75 IB_CM_REP_ERROR,
76 IB_CM_REP_RECEIVED,
77 IB_CM_RTU_RECEIVED,
78 IB_CM_USER_ESTABLISHED,
79 IB_CM_DREQ_ERROR,
80 IB_CM_DREQ_RECEIVED,
81 IB_CM_DREP_RECEIVED,
82 IB_CM_TIMEWAIT_EXIT,
83 IB_CM_MRA_RECEIVED,
84 IB_CM_REJ_RECEIVED,
85 IB_CM_LAP_ERROR,
86 IB_CM_LAP_RECEIVED,
87 IB_CM_APR_RECEIVED,
88 IB_CM_SIDR_REQ_ERROR,
89 IB_CM_SIDR_REQ_RECEIVED,
90 IB_CM_SIDR_REP_RECEIVED
91};
92
93enum ib_cm_data_size {
94 IB_CM_REQ_PRIVATE_DATA_SIZE = 92,
95 IB_CM_MRA_PRIVATE_DATA_SIZE = 222,
96 IB_CM_REJ_PRIVATE_DATA_SIZE = 148,
97 IB_CM_REP_PRIVATE_DATA_SIZE = 196,
98 IB_CM_RTU_PRIVATE_DATA_SIZE = 224,
99 IB_CM_DREQ_PRIVATE_DATA_SIZE = 220,
100 IB_CM_DREP_PRIVATE_DATA_SIZE = 224,
101 IB_CM_REJ_ARI_LENGTH = 72,
102 IB_CM_LAP_PRIVATE_DATA_SIZE = 168,
103 IB_CM_APR_PRIVATE_DATA_SIZE = 148,
104 IB_CM_APR_INFO_LENGTH = 72,
105 IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE = 216,
106 IB_CM_SIDR_REP_PRIVATE_DATA_SIZE = 136,
107 IB_CM_SIDR_REP_INFO_LENGTH = 72,
108};
109
110struct ib_cm_id;
111
112struct ib_cm_req_event_param {
113 struct ib_cm_id *listen_id;
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116 u16 bth_pkey;
117
118 u8 port;
119
120 struct sa_path_rec *primary_path;
121 struct sa_path_rec *alternate_path;
122
123 __be64 remote_ca_guid;
124 u32 remote_qkey;
125 u32 remote_qpn;
126 enum ib_qp_type qp_type;
127
128 u32 starting_psn;
129 u8 responder_resources;
130 u8 initiator_depth;
131 unsigned int local_cm_response_timeout:5;
132 unsigned int flow_control:1;
133 unsigned int remote_cm_response_timeout:5;
134 unsigned int retry_count:3;
135 unsigned int rnr_retry_count:3;
136 unsigned int srq:1;
137};
138
139struct ib_cm_rep_event_param {
140 __be64 remote_ca_guid;
141 u32 remote_qkey;
142 u32 remote_qpn;
143 u32 starting_psn;
144 u8 responder_resources;
145 u8 initiator_depth;
146 unsigned int target_ack_delay:5;
147 unsigned int failover_accepted:2;
148 unsigned int flow_control:1;
149 unsigned int rnr_retry_count:3;
150 unsigned int srq:1;
151};
152
153enum ib_cm_rej_reason {
154 IB_CM_REJ_NO_QP = 1,
155 IB_CM_REJ_NO_EEC = 2,
156 IB_CM_REJ_NO_RESOURCES = 3,
157 IB_CM_REJ_TIMEOUT = 4,
158 IB_CM_REJ_UNSUPPORTED = 5,
159 IB_CM_REJ_INVALID_COMM_ID = 6,
160 IB_CM_REJ_INVALID_COMM_INSTANCE = 7,
161 IB_CM_REJ_INVALID_SERVICE_ID = 8,
162 IB_CM_REJ_INVALID_TRANSPORT_TYPE = 9,
163 IB_CM_REJ_STALE_CONN = 10,
164 IB_CM_REJ_RDC_NOT_EXIST = 11,
165 IB_CM_REJ_INVALID_GID = 12,
166 IB_CM_REJ_INVALID_LID = 13,
167 IB_CM_REJ_INVALID_SL = 14,
168 IB_CM_REJ_INVALID_TRAFFIC_CLASS = 15,
169 IB_CM_REJ_INVALID_HOP_LIMIT = 16,
170 IB_CM_REJ_INVALID_PACKET_RATE = 17,
171 IB_CM_REJ_INVALID_ALT_GID = 18,
172 IB_CM_REJ_INVALID_ALT_LID = 19,
173 IB_CM_REJ_INVALID_ALT_SL = 20,
174 IB_CM_REJ_INVALID_ALT_TRAFFIC_CLASS = 21,
175 IB_CM_REJ_INVALID_ALT_HOP_LIMIT = 22,
176 IB_CM_REJ_INVALID_ALT_PACKET_RATE = 23,
177 IB_CM_REJ_PORT_CM_REDIRECT = 24,
178 IB_CM_REJ_PORT_REDIRECT = 25,
179 IB_CM_REJ_INVALID_MTU = 26,
180 IB_CM_REJ_INSUFFICIENT_RESP_RESOURCES = 27,
181 IB_CM_REJ_CONSUMER_DEFINED = 28,
182 IB_CM_REJ_INVALID_RNR_RETRY = 29,
183 IB_CM_REJ_DUPLICATE_LOCAL_COMM_ID = 30,
184 IB_CM_REJ_INVALID_CLASS_VERSION = 31,
185 IB_CM_REJ_INVALID_FLOW_LABEL = 32,
186 IB_CM_REJ_INVALID_ALT_FLOW_LABEL = 33
187};
188
189struct ib_cm_rej_event_param {
190 enum ib_cm_rej_reason reason;
191 void *ari;
192 u8 ari_length;
193};
194
195struct ib_cm_mra_event_param {
196 u8 service_timeout;
197};
198
199struct ib_cm_lap_event_param {
200 struct sa_path_rec *alternate_path;
201};
202
203enum ib_cm_apr_status {
204 IB_CM_APR_SUCCESS,
205 IB_CM_APR_INVALID_COMM_ID,
206 IB_CM_APR_UNSUPPORTED,
207 IB_CM_APR_REJECT,
208 IB_CM_APR_REDIRECT,
209 IB_CM_APR_IS_CURRENT,
210 IB_CM_APR_INVALID_QPN_EECN,
211 IB_CM_APR_INVALID_LID,
212 IB_CM_APR_INVALID_GID,
213 IB_CM_APR_INVALID_FLOW_LABEL,
214 IB_CM_APR_INVALID_TCLASS,
215 IB_CM_APR_INVALID_HOP_LIMIT,
216 IB_CM_APR_INVALID_PACKET_RATE,
217 IB_CM_APR_INVALID_SL
218};
219
220struct ib_cm_apr_event_param {
221 enum ib_cm_apr_status ap_status;
222 void *apr_info;
223 u8 info_len;
224};
225
226struct ib_cm_sidr_req_event_param {
227 struct ib_cm_id *listen_id;
228 __be64 service_id;
229
230 u16 bth_pkey;
231 u8 port;
232 u16 pkey;
233};
234
235enum ib_cm_sidr_status {
236 IB_SIDR_SUCCESS,
237 IB_SIDR_UNSUPPORTED,
238 IB_SIDR_REJECT,
239 IB_SIDR_NO_QP,
240 IB_SIDR_REDIRECT,
241 IB_SIDR_UNSUPPORTED_VERSION
242};
243
244struct ib_cm_sidr_rep_event_param {
245 enum ib_cm_sidr_status status;
246 u32 qkey;
247 u32 qpn;
248 void *info;
249 u8 info_len;
250};
251
252struct ib_cm_event {
253 enum ib_cm_event_type event;
254 union {
255 struct ib_cm_req_event_param req_rcvd;
256 struct ib_cm_rep_event_param rep_rcvd;
257
258 struct ib_cm_rej_event_param rej_rcvd;
259 struct ib_cm_mra_event_param mra_rcvd;
260 struct ib_cm_lap_event_param lap_rcvd;
261 struct ib_cm_apr_event_param apr_rcvd;
262
263 struct ib_cm_sidr_req_event_param sidr_req_rcvd;
264 struct ib_cm_sidr_rep_event_param sidr_rep_rcvd;
265 enum ib_wc_status send_status;
266 } param;
267
268 void *private_data;
269};
270
271#define CM_REQ_ATTR_ID cpu_to_be16(0x0010)
272#define CM_MRA_ATTR_ID cpu_to_be16(0x0011)
273#define CM_REJ_ATTR_ID cpu_to_be16(0x0012)
274#define CM_REP_ATTR_ID cpu_to_be16(0x0013)
275#define CM_RTU_ATTR_ID cpu_to_be16(0x0014)
276#define CM_DREQ_ATTR_ID cpu_to_be16(0x0015)
277#define CM_DREP_ATTR_ID cpu_to_be16(0x0016)
278#define CM_SIDR_REQ_ATTR_ID cpu_to_be16(0x0017)
279#define CM_SIDR_REP_ATTR_ID cpu_to_be16(0x0018)
280#define CM_LAP_ATTR_ID cpu_to_be16(0x0019)
281#define CM_APR_ATTR_ID cpu_to_be16(0x001A)
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299typedef int (*ib_cm_handler)(struct ib_cm_id *cm_id,
300 struct ib_cm_event *event);
301
302struct ib_cm_id {
303 ib_cm_handler cm_handler;
304 void *context;
305 struct ib_device *device;
306 __be64 service_id;
307 __be64 service_mask;
308 enum ib_cm_state state;
309 enum ib_cm_lap_state lap_state;
310 __be32 local_id;
311 __be32 remote_id;
312 u32 remote_cm_qpn;
313};
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326struct ib_cm_id *ib_create_cm_id(struct ib_device *device,
327 ib_cm_handler cm_handler,
328 void *context);
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336void ib_destroy_cm_id(struct ib_cm_id *cm_id);
337
338#define IB_SERVICE_ID_AGN_MASK cpu_to_be64(0xFF00000000000000ULL)
339#define IB_CM_ASSIGN_SERVICE_ID cpu_to_be64(0x0200000000000000ULL)
340#define IB_CMA_SERVICE_ID cpu_to_be64(0x0000000001000000ULL)
341#define IB_CMA_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFF000000ULL)
342#define IB_SDP_SERVICE_ID cpu_to_be64(0x0000000000010000ULL)
343#define IB_SDP_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFFFF0000ULL)
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358int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id,
359 __be64 service_mask);
360
361struct ib_cm_id *ib_cm_insert_listen(struct ib_device *device,
362 ib_cm_handler cm_handler,
363 __be64 service_id);
364
365struct ib_cm_req_param {
366 struct sa_path_rec *primary_path;
367 struct sa_path_rec *alternate_path;
368 __be64 service_id;
369 u32 qp_num;
370 enum ib_qp_type qp_type;
371 u32 starting_psn;
372 const void *private_data;
373 u8 private_data_len;
374 u8 peer_to_peer;
375 u8 responder_resources;
376 u8 initiator_depth;
377 u8 remote_cm_response_timeout;
378 u8 flow_control;
379 u8 local_cm_response_timeout;
380 u8 retry_count;
381 u8 rnr_retry_count;
382 u8 max_cm_retries;
383 u8 srq;
384};
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393int ib_send_cm_req(struct ib_cm_id *cm_id,
394 struct ib_cm_req_param *param);
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396struct ib_cm_rep_param {
397 u32 qp_num;
398 u32 starting_psn;
399 const void *private_data;
400 u8 private_data_len;
401 u8 responder_resources;
402 u8 initiator_depth;
403 u8 failover_accepted;
404 u8 flow_control;
405 u8 rnr_retry_count;
406 u8 srq;
407};
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417int ib_send_cm_rep(struct ib_cm_id *cm_id,
418 struct ib_cm_rep_param *param);
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428int ib_send_cm_rtu(struct ib_cm_id *cm_id,
429 const void *private_data,
430 u8 private_data_len);
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441int ib_send_cm_dreq(struct ib_cm_id *cm_id,
442 const void *private_data,
443 u8 private_data_len);
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456int ib_send_cm_drep(struct ib_cm_id *cm_id,
457 const void *private_data,
458 u8 private_data_len);
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474int ib_cm_notify(struct ib_cm_id *cm_id, enum ib_event_type event);
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488int ib_send_cm_rej(struct ib_cm_id *cm_id,
489 enum ib_cm_rej_reason reason,
490 void *ari,
491 u8 ari_length,
492 const void *private_data,
493 u8 private_data_len);
494
495#define IB_CM_MRA_FLAG_DELAY 0x80
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508int ib_send_cm_mra(struct ib_cm_id *cm_id,
509 u8 service_timeout,
510 const void *private_data,
511 u8 private_data_len);
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523int ib_send_cm_lap(struct ib_cm_id *cm_id,
524 struct sa_path_rec *alternate_path,
525 const void *private_data,
526 u8 private_data_len);
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544int ib_cm_init_qp_attr(struct ib_cm_id *cm_id,
545 struct ib_qp_attr *qp_attr,
546 int *qp_attr_mask);
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560int ib_send_cm_apr(struct ib_cm_id *cm_id,
561 enum ib_cm_apr_status status,
562 void *info,
563 u8 info_length,
564 const void *private_data,
565 u8 private_data_len);
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567struct ib_cm_sidr_req_param {
568 struct sa_path_rec *path;
569 __be64 service_id;
570 int timeout_ms;
571 const void *private_data;
572 u8 private_data_len;
573 u8 max_cm_retries;
574};
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583int ib_send_cm_sidr_req(struct ib_cm_id *cm_id,
584 struct ib_cm_sidr_req_param *param);
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586struct ib_cm_sidr_rep_param {
587 u32 qp_num;
588 u32 qkey;
589 enum ib_cm_sidr_status status;
590 const void *info;
591 u8 info_length;
592 const void *private_data;
593 u8 private_data_len;
594};
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603int ib_send_cm_sidr_rep(struct ib_cm_id *cm_id,
604 struct ib_cm_sidr_rep_param *param);
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610const char *__attribute_const__ ibcm_reject_msg(int reason);
611
612#endif
613