1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-O <<
2 /* 1 /*
3 * Copyright (c) 2004, 2005 Intel Corporation. 2 * Copyright (c) 2004, 2005 Intel Corporation. All rights reserved.
4 * Copyright (c) 2004 Topspin Corporation. Al 3 * Copyright (c) 2004 Topspin Corporation. All rights reserved.
5 * Copyright (c) 2004 Voltaire Corporation. A 4 * Copyright (c) 2004 Voltaire Corporation. All rights reserved.
6 * Copyright (c) 2005 Sun Microsystems, Inc. A 5 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
7 * Copyright (c) 2019, Mellanox Technologies i !! 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.
8 */ 34 */
9 !! 35 #if !defined(IB_CM_H)
10 #ifndef IB_CM_H <<
11 #define IB_CM_H 36 #define IB_CM_H
12 37
13 #include <rdma/ib_mad.h> 38 #include <rdma/ib_mad.h>
14 #include <rdma/ib_sa.h> 39 #include <rdma/ib_sa.h>
15 #include <rdma/rdma_cm.h> !! 40
>> 41 /* ib_cm and ib_user_cm modules share /sys/class/infiniband_cm */
>> 42 extern struct class cm_class;
16 43
17 enum ib_cm_state { 44 enum ib_cm_state {
18 IB_CM_IDLE, 45 IB_CM_IDLE,
19 IB_CM_LISTEN, 46 IB_CM_LISTEN,
20 IB_CM_REQ_SENT, 47 IB_CM_REQ_SENT,
21 IB_CM_REQ_RCVD, 48 IB_CM_REQ_RCVD,
22 IB_CM_MRA_REQ_SENT, 49 IB_CM_MRA_REQ_SENT,
23 IB_CM_MRA_REQ_RCVD, 50 IB_CM_MRA_REQ_RCVD,
24 IB_CM_REP_SENT, 51 IB_CM_REP_SENT,
25 IB_CM_REP_RCVD, 52 IB_CM_REP_RCVD,
26 IB_CM_MRA_REP_SENT, 53 IB_CM_MRA_REP_SENT,
27 IB_CM_MRA_REP_RCVD, 54 IB_CM_MRA_REP_RCVD,
28 IB_CM_ESTABLISHED, 55 IB_CM_ESTABLISHED,
29 IB_CM_DREQ_SENT, 56 IB_CM_DREQ_SENT,
30 IB_CM_DREQ_RCVD, 57 IB_CM_DREQ_RCVD,
31 IB_CM_TIMEWAIT, 58 IB_CM_TIMEWAIT,
32 IB_CM_SIDR_REQ_SENT, 59 IB_CM_SIDR_REQ_SENT,
33 IB_CM_SIDR_REQ_RCVD 60 IB_CM_SIDR_REQ_RCVD
34 }; 61 };
35 62
36 enum ib_cm_lap_state { 63 enum ib_cm_lap_state {
37 IB_CM_LAP_UNINIT, 64 IB_CM_LAP_UNINIT,
38 IB_CM_LAP_IDLE, 65 IB_CM_LAP_IDLE,
39 IB_CM_LAP_SENT, 66 IB_CM_LAP_SENT,
40 IB_CM_LAP_RCVD, 67 IB_CM_LAP_RCVD,
41 IB_CM_MRA_LAP_SENT, 68 IB_CM_MRA_LAP_SENT,
42 IB_CM_MRA_LAP_RCVD, 69 IB_CM_MRA_LAP_RCVD,
43 }; 70 };
44 71
45 enum ib_cm_event_type { 72 enum ib_cm_event_type {
46 IB_CM_REQ_ERROR, 73 IB_CM_REQ_ERROR,
47 IB_CM_REQ_RECEIVED, 74 IB_CM_REQ_RECEIVED,
48 IB_CM_REP_ERROR, 75 IB_CM_REP_ERROR,
49 IB_CM_REP_RECEIVED, 76 IB_CM_REP_RECEIVED,
50 IB_CM_RTU_RECEIVED, 77 IB_CM_RTU_RECEIVED,
51 IB_CM_USER_ESTABLISHED, 78 IB_CM_USER_ESTABLISHED,
52 IB_CM_DREQ_ERROR, 79 IB_CM_DREQ_ERROR,
53 IB_CM_DREQ_RECEIVED, 80 IB_CM_DREQ_RECEIVED,
54 IB_CM_DREP_RECEIVED, 81 IB_CM_DREP_RECEIVED,
55 IB_CM_TIMEWAIT_EXIT, 82 IB_CM_TIMEWAIT_EXIT,
56 IB_CM_MRA_RECEIVED, 83 IB_CM_MRA_RECEIVED,
57 IB_CM_REJ_RECEIVED, 84 IB_CM_REJ_RECEIVED,
58 IB_CM_LAP_ERROR, 85 IB_CM_LAP_ERROR,
59 IB_CM_LAP_RECEIVED, 86 IB_CM_LAP_RECEIVED,
60 IB_CM_APR_RECEIVED, 87 IB_CM_APR_RECEIVED,
61 IB_CM_SIDR_REQ_ERROR, 88 IB_CM_SIDR_REQ_ERROR,
62 IB_CM_SIDR_REQ_RECEIVED, 89 IB_CM_SIDR_REQ_RECEIVED,
63 IB_CM_SIDR_REP_RECEIVED 90 IB_CM_SIDR_REP_RECEIVED
64 }; 91 };
65 92
66 enum ib_cm_data_size { 93 enum ib_cm_data_size {
67 IB_CM_REQ_PRIVATE_DATA_SIZE = 92, 94 IB_CM_REQ_PRIVATE_DATA_SIZE = 92,
68 IB_CM_MRA_PRIVATE_DATA_SIZE = 222 95 IB_CM_MRA_PRIVATE_DATA_SIZE = 222,
69 IB_CM_REJ_PRIVATE_DATA_SIZE = 148 96 IB_CM_REJ_PRIVATE_DATA_SIZE = 148,
70 IB_CM_REP_PRIVATE_DATA_SIZE = 196 97 IB_CM_REP_PRIVATE_DATA_SIZE = 196,
71 IB_CM_RTU_PRIVATE_DATA_SIZE = 224 98 IB_CM_RTU_PRIVATE_DATA_SIZE = 224,
72 IB_CM_DREQ_PRIVATE_DATA_SIZE = 220 99 IB_CM_DREQ_PRIVATE_DATA_SIZE = 220,
73 IB_CM_DREP_PRIVATE_DATA_SIZE = 224 100 IB_CM_DREP_PRIVATE_DATA_SIZE = 224,
74 IB_CM_REJ_ARI_LENGTH = 72, 101 IB_CM_REJ_ARI_LENGTH = 72,
75 IB_CM_LAP_PRIVATE_DATA_SIZE = 168 102 IB_CM_LAP_PRIVATE_DATA_SIZE = 168,
76 IB_CM_APR_PRIVATE_DATA_SIZE = 148 103 IB_CM_APR_PRIVATE_DATA_SIZE = 148,
77 IB_CM_APR_INFO_LENGTH = 72, 104 IB_CM_APR_INFO_LENGTH = 72,
78 IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE = 216 105 IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE = 216,
79 IB_CM_SIDR_REP_PRIVATE_DATA_SIZE = 136 106 IB_CM_SIDR_REP_PRIVATE_DATA_SIZE = 136,
80 IB_CM_SIDR_REP_INFO_LENGTH = 72, 107 IB_CM_SIDR_REP_INFO_LENGTH = 72,
81 }; 108 };
82 109
83 struct ib_cm_id; 110 struct ib_cm_id;
84 111
85 struct ib_cm_req_event_param { 112 struct ib_cm_req_event_param {
86 struct ib_cm_id *listen_id; 113 struct ib_cm_id *listen_id;
87 114
88 /* P_Key that was used by the GMP's BT 115 /* P_Key that was used by the GMP's BTH header */
89 u16 bth_pkey; 116 u16 bth_pkey;
90 117
91 u8 port; 118 u8 port;
92 119
93 struct sa_path_rec *primary_path; 120 struct sa_path_rec *primary_path;
94 struct sa_path_rec *alternate_pat 121 struct sa_path_rec *alternate_path;
95 122
96 /* 123 /*
97 * SGID attribute of the primary path. 124 * SGID attribute of the primary path. Currently only
98 * useful for RoCE. Alternate path GID 125 * useful for RoCE. Alternate path GID attributes
99 * are not yet supported. 126 * are not yet supported.
100 */ 127 */
101 const struct ib_gid_attr *ppath_sgid_a 128 const struct ib_gid_attr *ppath_sgid_attr;
102 129
103 __be64 remote_ca_guid 130 __be64 remote_ca_guid;
104 u32 remote_qkey; 131 u32 remote_qkey;
105 u32 remote_qpn; 132 u32 remote_qpn;
106 enum ib_qp_type qp_type; 133 enum ib_qp_type qp_type;
107 134
108 u32 starting_psn; 135 u32 starting_psn;
109 u8 responder_reso 136 u8 responder_resources;
110 u8 initiator_dept 137 u8 initiator_depth;
111 unsigned int local_cm_respo 138 unsigned int local_cm_response_timeout:5;
112 unsigned int flow_control:1 139 unsigned int flow_control:1;
113 unsigned int remote_cm_resp 140 unsigned int remote_cm_response_timeout:5;
114 unsigned int retry_count:3; 141 unsigned int retry_count:3;
115 unsigned int rnr_retry_coun 142 unsigned int rnr_retry_count:3;
116 unsigned int srq:1; 143 unsigned int srq:1;
117 struct rdma_ucm_ece ece; <<
118 }; 144 };
119 145
120 struct ib_cm_rep_event_param { 146 struct ib_cm_rep_event_param {
121 __be64 remote_ca_guid 147 __be64 remote_ca_guid;
122 u32 remote_qkey; 148 u32 remote_qkey;
123 u32 remote_qpn; 149 u32 remote_qpn;
124 u32 starting_psn; 150 u32 starting_psn;
125 u8 responder_reso 151 u8 responder_resources;
126 u8 initiator_dept 152 u8 initiator_depth;
127 unsigned int target_ack_del 153 unsigned int target_ack_delay:5;
128 unsigned int failover_accep 154 unsigned int failover_accepted:2;
129 unsigned int flow_control:1 155 unsigned int flow_control:1;
130 unsigned int rnr_retry_coun 156 unsigned int rnr_retry_count:3;
131 unsigned int srq:1; 157 unsigned int srq:1;
132 struct rdma_ucm_ece ece; <<
133 }; 158 };
134 159
135 enum ib_cm_rej_reason { 160 enum ib_cm_rej_reason {
136 IB_CM_REJ_NO_QP 161 IB_CM_REJ_NO_QP = 1,
137 IB_CM_REJ_NO_EEC 162 IB_CM_REJ_NO_EEC = 2,
138 IB_CM_REJ_NO_RESOURCES 163 IB_CM_REJ_NO_RESOURCES = 3,
139 IB_CM_REJ_TIMEOUT 164 IB_CM_REJ_TIMEOUT = 4,
140 IB_CM_REJ_UNSUPPORTED 165 IB_CM_REJ_UNSUPPORTED = 5,
141 IB_CM_REJ_INVALID_COMM_ID 166 IB_CM_REJ_INVALID_COMM_ID = 6,
142 IB_CM_REJ_INVALID_COMM_INSTANCE 167 IB_CM_REJ_INVALID_COMM_INSTANCE = 7,
143 IB_CM_REJ_INVALID_SERVICE_ID 168 IB_CM_REJ_INVALID_SERVICE_ID = 8,
144 IB_CM_REJ_INVALID_TRANSPORT_TYPE 169 IB_CM_REJ_INVALID_TRANSPORT_TYPE = 9,
145 IB_CM_REJ_STALE_CONN 170 IB_CM_REJ_STALE_CONN = 10,
146 IB_CM_REJ_RDC_NOT_EXIST 171 IB_CM_REJ_RDC_NOT_EXIST = 11,
147 IB_CM_REJ_INVALID_GID 172 IB_CM_REJ_INVALID_GID = 12,
148 IB_CM_REJ_INVALID_LID 173 IB_CM_REJ_INVALID_LID = 13,
149 IB_CM_REJ_INVALID_SL 174 IB_CM_REJ_INVALID_SL = 14,
150 IB_CM_REJ_INVALID_TRAFFIC_CLASS 175 IB_CM_REJ_INVALID_TRAFFIC_CLASS = 15,
151 IB_CM_REJ_INVALID_HOP_LIMIT 176 IB_CM_REJ_INVALID_HOP_LIMIT = 16,
152 IB_CM_REJ_INVALID_PACKET_RATE 177 IB_CM_REJ_INVALID_PACKET_RATE = 17,
153 IB_CM_REJ_INVALID_ALT_GID 178 IB_CM_REJ_INVALID_ALT_GID = 18,
154 IB_CM_REJ_INVALID_ALT_LID 179 IB_CM_REJ_INVALID_ALT_LID = 19,
155 IB_CM_REJ_INVALID_ALT_SL 180 IB_CM_REJ_INVALID_ALT_SL = 20,
156 IB_CM_REJ_INVALID_ALT_TRAFFIC_CLASS 181 IB_CM_REJ_INVALID_ALT_TRAFFIC_CLASS = 21,
157 IB_CM_REJ_INVALID_ALT_HOP_LIMIT 182 IB_CM_REJ_INVALID_ALT_HOP_LIMIT = 22,
158 IB_CM_REJ_INVALID_ALT_PACKET_RATE 183 IB_CM_REJ_INVALID_ALT_PACKET_RATE = 23,
159 IB_CM_REJ_PORT_CM_REDIRECT 184 IB_CM_REJ_PORT_CM_REDIRECT = 24,
160 IB_CM_REJ_PORT_REDIRECT 185 IB_CM_REJ_PORT_REDIRECT = 25,
161 IB_CM_REJ_INVALID_MTU 186 IB_CM_REJ_INVALID_MTU = 26,
162 IB_CM_REJ_INSUFFICIENT_RESP_RESOURCES 187 IB_CM_REJ_INSUFFICIENT_RESP_RESOURCES = 27,
163 IB_CM_REJ_CONSUMER_DEFINED 188 IB_CM_REJ_CONSUMER_DEFINED = 28,
164 IB_CM_REJ_INVALID_RNR_RETRY 189 IB_CM_REJ_INVALID_RNR_RETRY = 29,
165 IB_CM_REJ_DUPLICATE_LOCAL_COMM_ID 190 IB_CM_REJ_DUPLICATE_LOCAL_COMM_ID = 30,
166 IB_CM_REJ_INVALID_CLASS_VERSION 191 IB_CM_REJ_INVALID_CLASS_VERSION = 31,
167 IB_CM_REJ_INVALID_FLOW_LABEL 192 IB_CM_REJ_INVALID_FLOW_LABEL = 32,
168 IB_CM_REJ_INVALID_ALT_FLOW_LABEL !! 193 IB_CM_REJ_INVALID_ALT_FLOW_LABEL = 33
169 IB_CM_REJ_VENDOR_OPTION_NOT_SUPPORTED <<
170 }; 194 };
171 195
172 struct ib_cm_rej_event_param { 196 struct ib_cm_rej_event_param {
173 enum ib_cm_rej_reason reason; 197 enum ib_cm_rej_reason reason;
174 void *ari; 198 void *ari;
175 u8 ari_length; 199 u8 ari_length;
176 }; 200 };
177 201
178 struct ib_cm_mra_event_param { 202 struct ib_cm_mra_event_param {
179 u8 service_timeout; 203 u8 service_timeout;
180 }; 204 };
181 205
182 struct ib_cm_lap_event_param { 206 struct ib_cm_lap_event_param {
183 struct sa_path_rec *alternate_pat 207 struct sa_path_rec *alternate_path;
184 }; 208 };
185 209
186 enum ib_cm_apr_status { 210 enum ib_cm_apr_status {
187 IB_CM_APR_SUCCESS, 211 IB_CM_APR_SUCCESS,
188 IB_CM_APR_INVALID_COMM_ID, 212 IB_CM_APR_INVALID_COMM_ID,
189 IB_CM_APR_UNSUPPORTED, 213 IB_CM_APR_UNSUPPORTED,
190 IB_CM_APR_REJECT, 214 IB_CM_APR_REJECT,
191 IB_CM_APR_REDIRECT, 215 IB_CM_APR_REDIRECT,
192 IB_CM_APR_IS_CURRENT, 216 IB_CM_APR_IS_CURRENT,
193 IB_CM_APR_INVALID_QPN_EECN, 217 IB_CM_APR_INVALID_QPN_EECN,
194 IB_CM_APR_INVALID_LID, 218 IB_CM_APR_INVALID_LID,
195 IB_CM_APR_INVALID_GID, 219 IB_CM_APR_INVALID_GID,
196 IB_CM_APR_INVALID_FLOW_LABEL, 220 IB_CM_APR_INVALID_FLOW_LABEL,
197 IB_CM_APR_INVALID_TCLASS, 221 IB_CM_APR_INVALID_TCLASS,
198 IB_CM_APR_INVALID_HOP_LIMIT, 222 IB_CM_APR_INVALID_HOP_LIMIT,
199 IB_CM_APR_INVALID_PACKET_RATE, 223 IB_CM_APR_INVALID_PACKET_RATE,
200 IB_CM_APR_INVALID_SL 224 IB_CM_APR_INVALID_SL
201 }; 225 };
202 226
203 struct ib_cm_apr_event_param { 227 struct ib_cm_apr_event_param {
204 enum ib_cm_apr_status ap_status; 228 enum ib_cm_apr_status ap_status;
205 void *apr_info; 229 void *apr_info;
206 u8 info_len; 230 u8 info_len;
207 }; 231 };
208 232
209 struct ib_cm_sidr_req_event_param { 233 struct ib_cm_sidr_req_event_param {
210 struct ib_cm_id *listen_id; 234 struct ib_cm_id *listen_id;
211 __be64 service_id; 235 __be64 service_id;
212 236
213 /* 237 /*
214 * SGID attribute of the request. Curr 238 * SGID attribute of the request. Currently only
215 * useful for RoCE. 239 * useful for RoCE.
216 */ 240 */
217 const struct ib_gid_attr *sgid_attr; 241 const struct ib_gid_attr *sgid_attr;
218 /* P_Key that was used by the GMP's BT 242 /* P_Key that was used by the GMP's BTH header */
219 u16 bth_pkey; 243 u16 bth_pkey;
220 u8 port; 244 u8 port;
221 u16 pkey; 245 u16 pkey;
222 }; 246 };
223 247
224 enum ib_cm_sidr_status { 248 enum ib_cm_sidr_status {
225 IB_SIDR_SUCCESS, 249 IB_SIDR_SUCCESS,
226 IB_SIDR_UNSUPPORTED, 250 IB_SIDR_UNSUPPORTED,
227 IB_SIDR_REJECT, 251 IB_SIDR_REJECT,
228 IB_SIDR_NO_QP, 252 IB_SIDR_NO_QP,
229 IB_SIDR_REDIRECT, 253 IB_SIDR_REDIRECT,
230 IB_SIDR_UNSUPPORTED_VERSION 254 IB_SIDR_UNSUPPORTED_VERSION
231 }; 255 };
232 256
233 struct ib_cm_sidr_rep_event_param { 257 struct ib_cm_sidr_rep_event_param {
234 enum ib_cm_sidr_status status; 258 enum ib_cm_sidr_status status;
235 u32 qkey; 259 u32 qkey;
236 u32 qpn; 260 u32 qpn;
237 void *info; 261 void *info;
238 const struct ib_gid_attr *sgid_attr; 262 const struct ib_gid_attr *sgid_attr;
239 u8 info_len; 263 u8 info_len;
240 }; 264 };
241 265
242 struct ib_cm_event { 266 struct ib_cm_event {
243 enum ib_cm_event_type event; 267 enum ib_cm_event_type event;
244 union { 268 union {
245 struct ib_cm_req_event_param 269 struct ib_cm_req_event_param req_rcvd;
246 struct ib_cm_rep_event_param 270 struct ib_cm_rep_event_param rep_rcvd;
247 /* No data for RTU received ev 271 /* No data for RTU received events. */
248 struct ib_cm_rej_event_param 272 struct ib_cm_rej_event_param rej_rcvd;
249 struct ib_cm_mra_event_param 273 struct ib_cm_mra_event_param mra_rcvd;
250 struct ib_cm_lap_event_param 274 struct ib_cm_lap_event_param lap_rcvd;
251 struct ib_cm_apr_event_param 275 struct ib_cm_apr_event_param apr_rcvd;
252 /* No data for DREQ/DREP recei 276 /* No data for DREQ/DREP received events. */
253 struct ib_cm_sidr_req_event_pa 277 struct ib_cm_sidr_req_event_param sidr_req_rcvd;
254 struct ib_cm_sidr_rep_event_pa 278 struct ib_cm_sidr_rep_event_param sidr_rep_rcvd;
255 enum ib_wc_status 279 enum ib_wc_status send_status;
256 } param; 280 } param;
257 281
258 void *private_data; 282 void *private_data;
259 }; 283 };
260 284
261 #define CM_REQ_ATTR_ID cpu_to_be16(0x 285 #define CM_REQ_ATTR_ID cpu_to_be16(0x0010)
262 #define CM_MRA_ATTR_ID cpu_to_be16(0x 286 #define CM_MRA_ATTR_ID cpu_to_be16(0x0011)
263 #define CM_REJ_ATTR_ID cpu_to_be16(0x 287 #define CM_REJ_ATTR_ID cpu_to_be16(0x0012)
264 #define CM_REP_ATTR_ID cpu_to_be16(0x 288 #define CM_REP_ATTR_ID cpu_to_be16(0x0013)
265 #define CM_RTU_ATTR_ID cpu_to_be16(0x 289 #define CM_RTU_ATTR_ID cpu_to_be16(0x0014)
266 #define CM_DREQ_ATTR_ID cpu_to_be16(0x 290 #define CM_DREQ_ATTR_ID cpu_to_be16(0x0015)
267 #define CM_DREP_ATTR_ID cpu_to_be16(0x 291 #define CM_DREP_ATTR_ID cpu_to_be16(0x0016)
268 #define CM_SIDR_REQ_ATTR_ID cpu_to_be16(0x 292 #define CM_SIDR_REQ_ATTR_ID cpu_to_be16(0x0017)
269 #define CM_SIDR_REP_ATTR_ID cpu_to_be16(0x 293 #define CM_SIDR_REP_ATTR_ID cpu_to_be16(0x0018)
270 #define CM_LAP_ATTR_ID cpu_to_be16(0x 294 #define CM_LAP_ATTR_ID cpu_to_be16(0x0019)
271 #define CM_APR_ATTR_ID cpu_to_be16(0x 295 #define CM_APR_ATTR_ID cpu_to_be16(0x001A)
272 296
273 /** 297 /**
274 * ib_cm_handler - User-defined callback to pr 298 * ib_cm_handler - User-defined callback to process communication events.
275 * @cm_id: Communication identifier associated 299 * @cm_id: Communication identifier associated with the reported event.
276 * @event: Information about the communication 300 * @event: Information about the communication event.
277 * 301 *
278 * IB_CM_REQ_RECEIVED and IB_CM_SIDR_REQ_RECEI 302 * IB_CM_REQ_RECEIVED and IB_CM_SIDR_REQ_RECEIVED communication events
279 * generated as a result of listen requests re 303 * generated as a result of listen requests result in the allocation of a
280 * new @cm_id. The new @cm_id is returned to 304 * new @cm_id. The new @cm_id is returned to the user through this callback.
281 * Clients are responsible for destroying the 305 * Clients are responsible for destroying the new @cm_id. For peer-to-peer
282 * IB_CM_REQ_RECEIVED and all other events, th 306 * IB_CM_REQ_RECEIVED and all other events, the returned @cm_id corresponds
283 * to a user's existing communication identifi 307 * to a user's existing communication identifier.
284 * 308 *
285 * Users may not call ib_destroy_cm_id while i 309 * Users may not call ib_destroy_cm_id while in the context of this callback;
286 * however, returning a non-zero value instruc 310 * however, returning a non-zero value instructs the communication manager to
287 * destroy the @cm_id after the callback compl 311 * destroy the @cm_id after the callback completes.
288 */ 312 */
289 typedef int (*ib_cm_handler)(struct ib_cm_id * 313 typedef int (*ib_cm_handler)(struct ib_cm_id *cm_id,
290 const struct ib_c 314 const struct ib_cm_event *event);
291 315
292 struct ib_cm_id { 316 struct ib_cm_id {
293 ib_cm_handler cm_handler; 317 ib_cm_handler cm_handler;
294 void *context; 318 void *context;
295 struct ib_device *device; 319 struct ib_device *device;
296 __be64 service_id; 320 __be64 service_id;
>> 321 __be64 service_mask;
297 enum ib_cm_state state; 322 enum ib_cm_state state; /* internal CM/debug use */
298 enum ib_cm_lap_state lap_state; 323 enum ib_cm_lap_state lap_state; /* internal CM/debug use */
299 __be32 local_id; 324 __be32 local_id;
300 __be32 remote_id; 325 __be32 remote_id;
301 u32 remote_cm_qpn; 326 u32 remote_cm_qpn; /* 1 unless redirected */
302 }; 327 };
303 328
304 /** 329 /**
305 * ib_create_cm_id - Allocate a communication 330 * ib_create_cm_id - Allocate a communication identifier.
306 * @device: Device associated with the cm_id. 331 * @device: Device associated with the cm_id. All related communication will
307 * be associated with the specified device. 332 * be associated with the specified device.
308 * @cm_handler: Callback invoked to notify the 333 * @cm_handler: Callback invoked to notify the user of CM events.
309 * @context: User specified context associated 334 * @context: User specified context associated with the communication
310 * identifier. 335 * identifier.
311 * 336 *
312 * Communication identifiers are used to track 337 * Communication identifiers are used to track connection states, service
313 * ID resolution requests, and listen requests 338 * ID resolution requests, and listen requests.
314 */ 339 */
315 struct ib_cm_id *ib_create_cm_id(struct ib_dev 340 struct ib_cm_id *ib_create_cm_id(struct ib_device *device,
316 ib_cm_handler 341 ib_cm_handler cm_handler,
317 void *context 342 void *context);
318 343
319 /** 344 /**
320 * ib_destroy_cm_id - Destroy a connection ide 345 * ib_destroy_cm_id - Destroy a connection identifier.
321 * @cm_id: Connection identifier to destroy. 346 * @cm_id: Connection identifier to destroy.
322 * 347 *
323 * This call blocks until the connection ident 348 * This call blocks until the connection identifier is destroyed.
324 */ 349 */
325 void ib_destroy_cm_id(struct ib_cm_id *cm_id); 350 void ib_destroy_cm_id(struct ib_cm_id *cm_id);
326 351
327 #define IB_SERVICE_ID_AGN_MASK cpu_to_be64(0x 352 #define IB_SERVICE_ID_AGN_MASK cpu_to_be64(0xFF00000000000000ULL)
328 #define IB_CM_ASSIGN_SERVICE_ID cpu_to_be64(0x 353 #define IB_CM_ASSIGN_SERVICE_ID cpu_to_be64(0x0200000000000000ULL)
329 #define IB_CMA_SERVICE_ID cpu_to_be64(0x 354 #define IB_CMA_SERVICE_ID cpu_to_be64(0x0000000001000000ULL)
330 #define IB_CMA_SERVICE_ID_MASK cpu_to_be64(0x 355 #define IB_CMA_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFF000000ULL)
331 #define IB_SDP_SERVICE_ID cpu_to_be64(0x 356 #define IB_SDP_SERVICE_ID cpu_to_be64(0x0000000000010000ULL)
332 #define IB_SDP_SERVICE_ID_MASK cpu_to_be64(0x 357 #define IB_SDP_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFFFF0000ULL)
333 358
334 /** 359 /**
335 * ib_cm_listen - Initiates listening on the s 360 * ib_cm_listen - Initiates listening on the specified service ID for
336 * connection and service ID resolution requ 361 * connection and service ID resolution requests.
337 * @cm_id: Connection identifier associated wi 362 * @cm_id: Connection identifier associated with the listen request.
338 * @service_id: Service identifier matched aga 363 * @service_id: Service identifier matched against incoming connection
339 * and service ID resolution requests. The 364 * and service ID resolution requests. The service ID should be specified
340 * network-byte order. If set to IB_CM_ASSI 365 * network-byte order. If set to IB_CM_ASSIGN_SERVICE_ID, the CM will
341 * assign a service ID to the caller. 366 * assign a service ID to the caller.
>> 367 * @service_mask: Mask applied to service ID used to listen across a
>> 368 * range of service IDs. If set to 0, the service ID is matched
>> 369 * exactly. This parameter is ignored if %service_id is set to
>> 370 * IB_CM_ASSIGN_SERVICE_ID.
342 */ 371 */
343 int ib_cm_listen(struct ib_cm_id *cm_id, __be6 !! 372 int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id,
>> 373 __be64 service_mask);
344 374
345 struct ib_cm_id *ib_cm_insert_listen(struct ib 375 struct ib_cm_id *ib_cm_insert_listen(struct ib_device *device,
346 ib_cm_han 376 ib_cm_handler cm_handler,
347 __be64 se 377 __be64 service_id);
348 378
349 struct ib_cm_req_param { 379 struct ib_cm_req_param {
350 struct sa_path_rec *primary_path; 380 struct sa_path_rec *primary_path;
351 struct sa_path_rec *primary_path_ <<
352 struct sa_path_rec *primary_path_ <<
353 struct sa_path_rec *alternate_pat 381 struct sa_path_rec *alternate_path;
354 const struct ib_gid_attr *ppath_sgid_a 382 const struct ib_gid_attr *ppath_sgid_attr;
355 __be64 service_id; 383 __be64 service_id;
356 u32 qp_num; 384 u32 qp_num;
357 enum ib_qp_type qp_type; 385 enum ib_qp_type qp_type;
358 u32 starting_psn; 386 u32 starting_psn;
359 const void *private_data; 387 const void *private_data;
360 u8 private_data_l 388 u8 private_data_len;
>> 389 u8 peer_to_peer;
361 u8 responder_reso 390 u8 responder_resources;
362 u8 initiator_dept 391 u8 initiator_depth;
363 u8 remote_cm_resp 392 u8 remote_cm_response_timeout;
364 u8 flow_control; 393 u8 flow_control;
365 u8 local_cm_respo 394 u8 local_cm_response_timeout;
366 u8 retry_count; 395 u8 retry_count;
367 u8 rnr_retry_coun 396 u8 rnr_retry_count;
368 u8 max_cm_retries 397 u8 max_cm_retries;
369 u8 srq; 398 u8 srq;
370 struct rdma_ucm_ece ece; <<
371 }; 399 };
372 400
373 /** 401 /**
374 * ib_send_cm_req - Sends a connection request 402 * ib_send_cm_req - Sends a connection request to the remote node.
375 * @cm_id: Connection identifier that will be 403 * @cm_id: Connection identifier that will be associated with the
376 * connection request. 404 * connection request.
377 * @param: Connection request information need 405 * @param: Connection request information needed to establish the
378 * connection. 406 * connection.
379 */ 407 */
380 int ib_send_cm_req(struct ib_cm_id *cm_id, 408 int ib_send_cm_req(struct ib_cm_id *cm_id,
381 struct ib_cm_req_param *par 409 struct ib_cm_req_param *param);
382 410
383 struct ib_cm_rep_param { 411 struct ib_cm_rep_param {
384 u32 qp_num; 412 u32 qp_num;
385 u32 starting_psn; 413 u32 starting_psn;
386 const void *private_data; 414 const void *private_data;
387 u8 private_data_len; 415 u8 private_data_len;
388 u8 responder_resources; 416 u8 responder_resources;
389 u8 initiator_depth; 417 u8 initiator_depth;
390 u8 failover_accepted; 418 u8 failover_accepted;
391 u8 flow_control; 419 u8 flow_control;
392 u8 rnr_retry_count; 420 u8 rnr_retry_count;
393 u8 srq; 421 u8 srq;
394 struct rdma_ucm_ece ece; <<
395 }; 422 };
396 423
397 /** 424 /**
398 * ib_send_cm_rep - Sends a connection reply i 425 * ib_send_cm_rep - Sends a connection reply in response to a connection
399 * request. 426 * request.
400 * @cm_id: Connection identifier that will be 427 * @cm_id: Connection identifier that will be associated with the
401 * connection request. 428 * connection request.
402 * @param: Connection reply information needed 429 * @param: Connection reply information needed to establish the
403 * connection. 430 * connection.
404 */ 431 */
405 int ib_send_cm_rep(struct ib_cm_id *cm_id, 432 int ib_send_cm_rep(struct ib_cm_id *cm_id,
406 struct ib_cm_rep_param *par 433 struct ib_cm_rep_param *param);
407 434
408 /** 435 /**
409 * ib_send_cm_rtu - Sends a connection ready t 436 * ib_send_cm_rtu - Sends a connection ready to use message in response
410 * to a connection reply message. 437 * to a connection reply message.
411 * @cm_id: Connection identifier associated wi 438 * @cm_id: Connection identifier associated with the connection request.
412 * @private_data: Optional user-defined privat 439 * @private_data: Optional user-defined private data sent with the
413 * ready to use message. 440 * ready to use message.
414 * @private_data_len: Size of the private data 441 * @private_data_len: Size of the private data buffer, in bytes.
415 */ 442 */
416 int ib_send_cm_rtu(struct ib_cm_id *cm_id, 443 int ib_send_cm_rtu(struct ib_cm_id *cm_id,
417 const void *private_data, 444 const void *private_data,
418 u8 private_data_len); 445 u8 private_data_len);
419 446
420 /** 447 /**
421 * ib_send_cm_dreq - Sends a disconnection req 448 * ib_send_cm_dreq - Sends a disconnection request for an existing
422 * connection. 449 * connection.
423 * @cm_id: Connection identifier associated wi 450 * @cm_id: Connection identifier associated with the connection being
424 * released. 451 * released.
425 * @private_data: Optional user-defined privat 452 * @private_data: Optional user-defined private data sent with the
426 * disconnection request message. 453 * disconnection request message.
427 * @private_data_len: Size of the private data 454 * @private_data_len: Size of the private data buffer, in bytes.
428 */ 455 */
429 int ib_send_cm_dreq(struct ib_cm_id *cm_id, 456 int ib_send_cm_dreq(struct ib_cm_id *cm_id,
430 const void *private_data, 457 const void *private_data,
431 u8 private_data_len); 458 u8 private_data_len);
432 459
433 /** 460 /**
434 * ib_send_cm_drep - Sends a disconnection rep 461 * ib_send_cm_drep - Sends a disconnection reply to a disconnection request.
435 * @cm_id: Connection identifier associated wi 462 * @cm_id: Connection identifier associated with the connection being
436 * released. 463 * released.
437 * @private_data: Optional user-defined privat 464 * @private_data: Optional user-defined private data sent with the
438 * disconnection reply message. 465 * disconnection reply message.
439 * @private_data_len: Size of the private data 466 * @private_data_len: Size of the private data buffer, in bytes.
440 * 467 *
441 * If the cm_id is in the correct state, the C 468 * If the cm_id is in the correct state, the CM will transition the connection
442 * to the timewait state, even if an error occ 469 * to the timewait state, even if an error occurs sending the DREP message.
443 */ 470 */
444 int ib_send_cm_drep(struct ib_cm_id *cm_id, 471 int ib_send_cm_drep(struct ib_cm_id *cm_id,
445 const void *private_data, 472 const void *private_data,
446 u8 private_data_len); 473 u8 private_data_len);
447 474
448 /** 475 /**
449 * ib_cm_notify - Notifies the CM of an event 476 * ib_cm_notify - Notifies the CM of an event reported to the consumer.
450 * @cm_id: Connection identifier to transition 477 * @cm_id: Connection identifier to transition to established.
451 * @event: Type of event. 478 * @event: Type of event.
452 * 479 *
453 * This routine should be invoked by users to 480 * This routine should be invoked by users to notify the CM of relevant
454 * communication events. Events that should b 481 * communication events. Events that should be reported to the CM and
455 * when to report them are: 482 * when to report them are:
456 * 483 *
457 * IB_EVENT_COMM_EST - Used when a message is 484 * IB_EVENT_COMM_EST - Used when a message is received on a connected
458 * QP before an RTU has been received. 485 * QP before an RTU has been received.
459 * IB_EVENT_PATH_MIG - Notifies the CM that th 486 * IB_EVENT_PATH_MIG - Notifies the CM that the connection has failed over
460 * to the alternate path. 487 * to the alternate path.
461 */ 488 */
462 int ib_cm_notify(struct ib_cm_id *cm_id, enum 489 int ib_cm_notify(struct ib_cm_id *cm_id, enum ib_event_type event);
463 490
464 /** 491 /**
465 * ib_send_cm_rej - Sends a connection rejecti 492 * ib_send_cm_rej - Sends a connection rejection message to the
466 * remote node. 493 * remote node.
467 * @cm_id: Connection identifier associated wi 494 * @cm_id: Connection identifier associated with the connection being
468 * rejected. 495 * rejected.
469 * @reason: Reason for the connection request 496 * @reason: Reason for the connection request rejection.
470 * @ari: Optional additional rejection informa 497 * @ari: Optional additional rejection information.
471 * @ari_length: Size of the additional rejecti 498 * @ari_length: Size of the additional rejection information, in bytes.
472 * @private_data: Optional user-defined privat 499 * @private_data: Optional user-defined private data sent with the
473 * rejection message. 500 * rejection message.
474 * @private_data_len: Size of the private data 501 * @private_data_len: Size of the private data buffer, in bytes.
475 */ 502 */
476 int ib_send_cm_rej(struct ib_cm_id *cm_id, 503 int ib_send_cm_rej(struct ib_cm_id *cm_id,
477 enum ib_cm_rej_reason reaso 504 enum ib_cm_rej_reason reason,
478 void *ari, 505 void *ari,
479 u8 ari_length, 506 u8 ari_length,
480 const void *private_data, 507 const void *private_data,
481 u8 private_data_len); 508 u8 private_data_len);
482 509
483 #define IB_CM_MRA_FLAG_DELAY 0x80 /* Send MRA 510 #define IB_CM_MRA_FLAG_DELAY 0x80 /* Send MRA only after a duplicate msg */
484 511
485 /** 512 /**
486 * ib_send_cm_mra - Sends a message receipt ac 513 * ib_send_cm_mra - Sends a message receipt acknowledgement to a connection
487 * message. 514 * message.
488 * @cm_id: Connection identifier associated wi 515 * @cm_id: Connection identifier associated with the connection message.
489 * @service_timeout: The lower 5-bits specify 516 * @service_timeout: The lower 5-bits specify the maximum time required for
490 * the sender to reply to the connection mes 517 * the sender to reply to the connection message. The upper 3-bits
491 * specify additional control flags. 518 * specify additional control flags.
492 * @private_data: Optional user-defined privat 519 * @private_data: Optional user-defined private data sent with the
493 * message receipt acknowledgement. 520 * message receipt acknowledgement.
494 * @private_data_len: Size of the private data 521 * @private_data_len: Size of the private data buffer, in bytes.
495 */ 522 */
496 int ib_send_cm_mra(struct ib_cm_id *cm_id, 523 int ib_send_cm_mra(struct ib_cm_id *cm_id,
497 u8 service_timeout, 524 u8 service_timeout,
498 const void *private_data, 525 const void *private_data,
499 u8 private_data_len); 526 u8 private_data_len);
500 527
501 /** 528 /**
>> 529 * ib_send_cm_lap - Sends a load alternate path request.
>> 530 * @cm_id: Connection identifier associated with the load alternate path
>> 531 * message.
>> 532 * @alternate_path: A path record that identifies the alternate path to
>> 533 * load.
>> 534 * @private_data: Optional user-defined private data sent with the
>> 535 * load alternate path message.
>> 536 * @private_data_len: Size of the private data buffer, in bytes.
>> 537 */
>> 538 int ib_send_cm_lap(struct ib_cm_id *cm_id,
>> 539 struct sa_path_rec *alternate_path,
>> 540 const void *private_data,
>> 541 u8 private_data_len);
>> 542
>> 543 /**
502 * ib_cm_init_qp_attr - Initializes the QP att 544 * ib_cm_init_qp_attr - Initializes the QP attributes for use in transitioning
503 * to a specified QP state. 545 * to a specified QP state.
504 * @cm_id: Communication identifier associated 546 * @cm_id: Communication identifier associated with the QP attributes to
505 * initialize. 547 * initialize.
506 * @qp_attr: On input, specifies the desired Q 548 * @qp_attr: On input, specifies the desired QP state. On output, the
507 * mandatory and desired optional attributes 549 * mandatory and desired optional attributes will be set in order to
508 * modify the QP to the specified state. 550 * modify the QP to the specified state.
509 * @qp_attr_mask: The QP attribute mask that m 551 * @qp_attr_mask: The QP attribute mask that may be used to transition the
510 * QP to the specified state. 552 * QP to the specified state.
511 * 553 *
512 * Users must set the @qp_attr->qp_state to th 554 * Users must set the @qp_attr->qp_state to the desired QP state. This call
513 * will set all required attributes for the gi 555 * will set all required attributes for the given transition, along with
514 * known optional attributes. Users may overr 556 * known optional attributes. Users may override the attributes returned from
515 * this call before calling ib_modify_qp. 557 * this call before calling ib_modify_qp.
516 */ 558 */
517 int ib_cm_init_qp_attr(struct ib_cm_id *cm_id, 559 int ib_cm_init_qp_attr(struct ib_cm_id *cm_id,
518 struct ib_qp_attr *qp_a 560 struct ib_qp_attr *qp_attr,
519 int *qp_attr_mask); 561 int *qp_attr_mask);
520 562
>> 563 /**
>> 564 * ib_send_cm_apr - Sends an alternate path response message in response to
>> 565 * a load alternate path request.
>> 566 * @cm_id: Connection identifier associated with the alternate path response.
>> 567 * @status: Reply status sent with the alternate path response.
>> 568 * @info: Optional additional information sent with the alternate path
>> 569 * response.
>> 570 * @info_length: Size of the additional information, in bytes.
>> 571 * @private_data: Optional user-defined private data sent with the
>> 572 * alternate path response message.
>> 573 * @private_data_len: Size of the private data buffer, in bytes.
>> 574 */
>> 575 int ib_send_cm_apr(struct ib_cm_id *cm_id,
>> 576 enum ib_cm_apr_status status,
>> 577 void *info,
>> 578 u8 info_length,
>> 579 const void *private_data,
>> 580 u8 private_data_len);
>> 581
521 struct ib_cm_sidr_req_param { 582 struct ib_cm_sidr_req_param {
522 struct sa_path_rec *path; 583 struct sa_path_rec *path;
523 const struct ib_gid_attr *sgid_attr; 584 const struct ib_gid_attr *sgid_attr;
524 __be64 service_id; 585 __be64 service_id;
525 unsigned long timeout_ms; 586 unsigned long timeout_ms;
526 const void *private_data; 587 const void *private_data;
527 u8 private_data_l 588 u8 private_data_len;
528 u8 max_cm_retries 589 u8 max_cm_retries;
529 }; 590 };
530 591
531 /** 592 /**
532 * ib_send_cm_sidr_req - Sends a service ID re 593 * ib_send_cm_sidr_req - Sends a service ID resolution request to the
533 * remote node. 594 * remote node.
534 * @cm_id: Communication identifier that will 595 * @cm_id: Communication identifier that will be associated with the
535 * service ID resolution request. 596 * service ID resolution request.
536 * @param: Service ID resolution request infor 597 * @param: Service ID resolution request information.
537 */ 598 */
538 int ib_send_cm_sidr_req(struct ib_cm_id *cm_id 599 int ib_send_cm_sidr_req(struct ib_cm_id *cm_id,
539 struct ib_cm_sidr_req_ 600 struct ib_cm_sidr_req_param *param);
540 601
541 struct ib_cm_sidr_rep_param { 602 struct ib_cm_sidr_rep_param {
542 u32 qp_num; 603 u32 qp_num;
543 u32 qkey; 604 u32 qkey;
544 enum ib_cm_sidr_status status; 605 enum ib_cm_sidr_status status;
545 const void *info; 606 const void *info;
546 u8 info_length; 607 u8 info_length;
547 const void *private_data; 608 const void *private_data;
548 u8 private_data_l 609 u8 private_data_len;
549 struct rdma_ucm_ece ece; <<
550 }; 610 };
551 611
552 /** 612 /**
553 * ib_send_cm_sidr_rep - Sends a service ID re 613 * ib_send_cm_sidr_rep - Sends a service ID resolution reply to the
554 * remote node. 614 * remote node.
555 * @cm_id: Communication identifier associated 615 * @cm_id: Communication identifier associated with the received service ID
556 * resolution request. 616 * resolution request.
557 * @param: Service ID resolution reply informa 617 * @param: Service ID resolution reply information.
558 */ 618 */
559 int ib_send_cm_sidr_rep(struct ib_cm_id *cm_id 619 int ib_send_cm_sidr_rep(struct ib_cm_id *cm_id,
560 struct ib_cm_sidr_rep_ 620 struct ib_cm_sidr_rep_param *param);
561 621
562 /** 622 /**
563 * ibcm_reject_msg - return a pointer to a rej 623 * ibcm_reject_msg - return a pointer to a reject message string.
564 * @reason: Value returned in the REJECT event 624 * @reason: Value returned in the REJECT event status field.
565 */ 625 */
566 const char *__attribute_const__ ibcm_reject_ms 626 const char *__attribute_const__ ibcm_reject_msg(int reason);
567 627
568 #endif /* IB_CM_H */ 628 #endif /* IB_CM_H */
569 629
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