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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
41enum ib_cm_state {
42 IB_CM_IDLE,
43 IB_CM_LISTEN,
44 IB_CM_REQ_SENT,
45 IB_CM_REQ_RCVD,
46 IB_CM_MRA_REQ_SENT,
47 IB_CM_MRA_REQ_RCVD,
48 IB_CM_REP_SENT,
49 IB_CM_REP_RCVD,
50 IB_CM_MRA_REP_SENT,
51 IB_CM_MRA_REP_RCVD,
52 IB_CM_ESTABLISHED,
53 IB_CM_DREQ_SENT,
54 IB_CM_DREQ_RCVD,
55 IB_CM_TIMEWAIT,
56 IB_CM_SIDR_REQ_SENT,
57 IB_CM_SIDR_REQ_RCVD
58};
59
60enum ib_cm_lap_state {
61 IB_CM_LAP_UNINIT,
62 IB_CM_LAP_IDLE,
63 IB_CM_LAP_SENT,
64 IB_CM_LAP_RCVD,
65 IB_CM_MRA_LAP_SENT,
66 IB_CM_MRA_LAP_RCVD,
67};
68
69enum ib_cm_event_type {
70 IB_CM_REQ_ERROR,
71 IB_CM_REQ_RECEIVED,
72 IB_CM_REP_ERROR,
73 IB_CM_REP_RECEIVED,
74 IB_CM_RTU_RECEIVED,
75 IB_CM_USER_ESTABLISHED,
76 IB_CM_DREQ_ERROR,
77 IB_CM_DREQ_RECEIVED,
78 IB_CM_DREP_RECEIVED,
79 IB_CM_TIMEWAIT_EXIT,
80 IB_CM_MRA_RECEIVED,
81 IB_CM_REJ_RECEIVED,
82 IB_CM_LAP_ERROR,
83 IB_CM_LAP_RECEIVED,
84 IB_CM_APR_RECEIVED,
85 IB_CM_SIDR_REQ_ERROR,
86 IB_CM_SIDR_REQ_RECEIVED,
87 IB_CM_SIDR_REP_RECEIVED
88};
89
90enum ib_cm_data_size {
91 IB_CM_REQ_PRIVATE_DATA_SIZE = 92,
92 IB_CM_MRA_PRIVATE_DATA_SIZE = 222,
93 IB_CM_REJ_PRIVATE_DATA_SIZE = 148,
94 IB_CM_REP_PRIVATE_DATA_SIZE = 196,
95 IB_CM_RTU_PRIVATE_DATA_SIZE = 224,
96 IB_CM_DREQ_PRIVATE_DATA_SIZE = 220,
97 IB_CM_DREP_PRIVATE_DATA_SIZE = 224,
98 IB_CM_REJ_ARI_LENGTH = 72,
99 IB_CM_LAP_PRIVATE_DATA_SIZE = 168,
100 IB_CM_APR_PRIVATE_DATA_SIZE = 148,
101 IB_CM_APR_INFO_LENGTH = 72,
102 IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE = 216,
103 IB_CM_SIDR_REP_PRIVATE_DATA_SIZE = 136,
104 IB_CM_SIDR_REP_INFO_LENGTH = 72,
105 IB_CM_COMPARE_SIZE = 64
106};
107
108struct ib_cm_id;
109
110struct ib_cm_req_event_param {
111 struct ib_cm_id *listen_id;
112 u8 port;
113
114 struct ib_sa_path_rec *primary_path;
115 struct ib_sa_path_rec *alternate_path;
116
117 __be64 remote_ca_guid;
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
133struct ib_cm_rep_event_param {
134 __be64 remote_ca_guid;
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
147enum ib_cm_rej_reason {
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
181};
182
183struct ib_cm_rej_event_param {
184 enum ib_cm_rej_reason reason;
185 void *ari;
186 u8 ari_length;
187};
188
189struct ib_cm_mra_event_param {
190 u8 service_timeout;
191};
192
193struct ib_cm_lap_event_param {
194 struct ib_sa_path_rec *alternate_path;
195};
196
197enum 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
214struct ib_cm_apr_event_param {
215 enum ib_cm_apr_status ap_status;
216 void *apr_info;
217 u8 info_len;
218};
219
220struct ib_cm_sidr_req_event_param {
221 struct ib_cm_id *listen_id;
222 u8 port;
223 u16 pkey;
224};
225
226enum 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
235struct 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
243struct ib_cm_event {
244 enum ib_cm_event_type event;
245 union {
246 struct ib_cm_req_event_param req_rcvd;
247 struct ib_cm_rep_event_param rep_rcvd;
248
249 struct ib_cm_rej_event_param rej_rcvd;
250 struct ib_cm_mra_event_param mra_rcvd;
251 struct ib_cm_lap_event_param lap_rcvd;
252 struct ib_cm_apr_event_param apr_rcvd;
253
254 struct ib_cm_sidr_req_event_param sidr_req_rcvd;
255 struct ib_cm_sidr_rep_event_param sidr_rep_rcvd;
256 enum ib_wc_status send_status;
257 } param;
258
259 void *private_data;
260};
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278typedef int (*ib_cm_handler)(struct ib_cm_id *cm_id,
279 struct ib_cm_event *event);
280
281struct ib_cm_id {
282 ib_cm_handler cm_handler;
283 void *context;
284 struct ib_device *device;
285 __be64 service_id;
286 __be64 service_mask;
287 enum ib_cm_state state;
288 enum ib_cm_lap_state lap_state;
289 __be32 local_id;
290 __be32 remote_id;
291 u32 remote_cm_qpn;
292};
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305struct ib_cm_id *ib_create_cm_id(struct ib_device *device,
306 ib_cm_handler cm_handler,
307 void *context);
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315void ib_destroy_cm_id(struct ib_cm_id *cm_id);
316
317#define IB_SERVICE_ID_AGN_MASK cpu_to_be64(0xFF00000000000000ULL)
318#define IB_CM_ASSIGN_SERVICE_ID cpu_to_be64(0x0200000000000000ULL)
319#define IB_CMA_SERVICE_ID cpu_to_be64(0x0000000001000000ULL)
320#define IB_CMA_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFF000000ULL)
321#define IB_SDP_SERVICE_ID cpu_to_be64(0x0000000000010000ULL)
322#define IB_SDP_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFFFF0000ULL)
323
324struct ib_cm_compare_data {
325 u8 data[IB_CM_COMPARE_SIZE];
326 u8 mask[IB_CM_COMPARE_SIZE];
327};
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345int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id, __be64 service_mask,
346 struct ib_cm_compare_data *compare_data);
347
348struct ib_cm_req_param {
349 struct ib_sa_path_rec *primary_path;
350 struct ib_sa_path_rec *alternate_path;
351 __be64 service_id;
352 u32 qp_num;
353 enum ib_qp_type qp_type;
354 u32 starting_psn;
355 const void *private_data;
356 u8 private_data_len;
357 u8 peer_to_peer;
358 u8 responder_resources;
359 u8 initiator_depth;
360 u8 remote_cm_response_timeout;
361 u8 flow_control;
362 u8 local_cm_response_timeout;
363 u8 retry_count;
364 u8 rnr_retry_count;
365 u8 max_cm_retries;
366 u8 srq;
367};
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376int ib_send_cm_req(struct ib_cm_id *cm_id,
377 struct ib_cm_req_param *param);
378
379struct ib_cm_rep_param {
380 u32 qp_num;
381 u32 starting_psn;
382 const void *private_data;
383 u8 private_data_len;
384 u8 responder_resources;
385 u8 initiator_depth;
386 u8 failover_accepted;
387 u8 flow_control;
388 u8 rnr_retry_count;
389 u8 srq;
390};
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400int ib_send_cm_rep(struct ib_cm_id *cm_id,
401 struct ib_cm_rep_param *param);
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411int ib_send_cm_rtu(struct ib_cm_id *cm_id,
412 const void *private_data,
413 u8 private_data_len);
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424int ib_send_cm_dreq(struct ib_cm_id *cm_id,
425 const void *private_data,
426 u8 private_data_len);
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439int ib_send_cm_drep(struct ib_cm_id *cm_id,
440 const void *private_data,
441 u8 private_data_len);
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457int ib_cm_notify(struct ib_cm_id *cm_id, enum ib_event_type event);
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471int ib_send_cm_rej(struct ib_cm_id *cm_id,
472 enum ib_cm_rej_reason reason,
473 void *ari,
474 u8 ari_length,
475 const void *private_data,
476 u8 private_data_len);
477
478#define IB_CM_MRA_FLAG_DELAY 0x80
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491int ib_send_cm_mra(struct ib_cm_id *cm_id,
492 u8 service_timeout,
493 const void *private_data,
494 u8 private_data_len);
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506int ib_send_cm_lap(struct ib_cm_id *cm_id,
507 struct ib_sa_path_rec *alternate_path,
508 const void *private_data,
509 u8 private_data_len);
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527int ib_cm_init_qp_attr(struct ib_cm_id *cm_id,
528 struct ib_qp_attr *qp_attr,
529 int *qp_attr_mask);
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543int ib_send_cm_apr(struct ib_cm_id *cm_id,
544 enum ib_cm_apr_status status,
545 void *info,
546 u8 info_length,
547 const void *private_data,
548 u8 private_data_len);
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550struct ib_cm_sidr_req_param {
551 struct ib_sa_path_rec *path;
552 __be64 service_id;
553 int timeout_ms;
554 const void *private_data;
555 u8 private_data_len;
556 u8 max_cm_retries;
557};
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566int ib_send_cm_sidr_req(struct ib_cm_id *cm_id,
567 struct ib_cm_sidr_req_param *param);
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569struct ib_cm_sidr_rep_param {
570 u32 qp_num;
571 u32 qkey;
572 enum ib_cm_sidr_status status;
573 const void *info;
574 u8 info_length;
575 const void *private_data;
576 u8 private_data_len;
577};
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586int ib_send_cm_sidr_rep(struct ib_cm_id *cm_id,
587 struct ib_cm_sidr_rep_param *param);
588
589#endif
590