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1/*
2 * Copyright (c) 2004 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Voltaire, Inc. All rights reserved.
4 * Copyright (c) 2006 Intel Corporation. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35#ifndef IB_SA_H
36#define IB_SA_H
37
38#include <linux/completion.h>
39#include <linux/compiler.h>
40
41#include <linux/atomic.h>
42
43#include <rdma/ib_verbs.h>
44#include <rdma/ib_mad.h>
45
46enum {
47 IB_SA_CLASS_VERSION = 2, /* IB spec version 1.1/1.2 */
48
49 IB_SA_METHOD_GET_TABLE = 0x12,
50 IB_SA_METHOD_GET_TABLE_RESP = 0x92,
51 IB_SA_METHOD_DELETE = 0x15,
52 IB_SA_METHOD_DELETE_RESP = 0x95,
53 IB_SA_METHOD_GET_MULTI = 0x14,
54 IB_SA_METHOD_GET_MULTI_RESP = 0x94,
55 IB_SA_METHOD_GET_TRACE_TBL = 0x13
56};
57
58enum {
59 IB_SA_ATTR_CLASS_PORTINFO = 0x01,
60 IB_SA_ATTR_NOTICE = 0x02,
61 IB_SA_ATTR_INFORM_INFO = 0x03,
62 IB_SA_ATTR_NODE_REC = 0x11,
63 IB_SA_ATTR_PORT_INFO_REC = 0x12,
64 IB_SA_ATTR_SL2VL_REC = 0x13,
65 IB_SA_ATTR_SWITCH_REC = 0x14,
66 IB_SA_ATTR_LINEAR_FDB_REC = 0x15,
67 IB_SA_ATTR_RANDOM_FDB_REC = 0x16,
68 IB_SA_ATTR_MCAST_FDB_REC = 0x17,
69 IB_SA_ATTR_SM_INFO_REC = 0x18,
70 IB_SA_ATTR_LINK_REC = 0x20,
71 IB_SA_ATTR_GUID_INFO_REC = 0x30,
72 IB_SA_ATTR_SERVICE_REC = 0x31,
73 IB_SA_ATTR_PARTITION_REC = 0x33,
74 IB_SA_ATTR_PATH_REC = 0x35,
75 IB_SA_ATTR_VL_ARB_REC = 0x36,
76 IB_SA_ATTR_MC_MEMBER_REC = 0x38,
77 IB_SA_ATTR_TRACE_REC = 0x39,
78 IB_SA_ATTR_MULTI_PATH_REC = 0x3a,
79 IB_SA_ATTR_SERVICE_ASSOC_REC = 0x3b,
80 IB_SA_ATTR_INFORM_INFO_REC = 0xf3
81};
82
83enum ib_sa_selector {
84 IB_SA_GT = 0,
85 IB_SA_LT = 1,
86 IB_SA_EQ = 2,
87 /*
88 * The meaning of "best" depends on the attribute: for
89 * example, for MTU best will return the largest available
90 * MTU, while for packet life time, best will return the
91 * smallest available life time.
92 */
93 IB_SA_BEST = 3
94};
95
96/*
97 * Structures for SA records are named "struct ib_sa_xxx_rec." No
98 * attempt is made to pack structures to match the physical layout of
99 * SA records in SA MADs; all packing and unpacking is handled by the
100 * SA query code.
101 *
102 * For a record with structure ib_sa_xxx_rec, the naming convention
103 * for the component mask value for field yyy is IB_SA_XXX_REC_YYY (we
104 * never use different abbreviations or otherwise change the spelling
105 * of xxx/yyy between ib_sa_xxx_rec.yyy and IB_SA_XXX_REC_YYY).
106 *
107 * Reserved rows are indicated with comments to help maintainability.
108 */
109
110#define IB_SA_PATH_REC_SERVICE_ID (IB_SA_COMP_MASK( 0) |\
111 IB_SA_COMP_MASK( 1))
112#define IB_SA_PATH_REC_DGID IB_SA_COMP_MASK( 2)
113#define IB_SA_PATH_REC_SGID IB_SA_COMP_MASK( 3)
114#define IB_SA_PATH_REC_DLID IB_SA_COMP_MASK( 4)
115#define IB_SA_PATH_REC_SLID IB_SA_COMP_MASK( 5)
116#define IB_SA_PATH_REC_RAW_TRAFFIC IB_SA_COMP_MASK( 6)
117/* reserved: 7 */
118#define IB_SA_PATH_REC_FLOW_LABEL IB_SA_COMP_MASK( 8)
119#define IB_SA_PATH_REC_HOP_LIMIT IB_SA_COMP_MASK( 9)
120#define IB_SA_PATH_REC_TRAFFIC_CLASS IB_SA_COMP_MASK(10)
121#define IB_SA_PATH_REC_REVERSIBLE IB_SA_COMP_MASK(11)
122#define IB_SA_PATH_REC_NUMB_PATH IB_SA_COMP_MASK(12)
123#define IB_SA_PATH_REC_PKEY IB_SA_COMP_MASK(13)
124#define IB_SA_PATH_REC_QOS_CLASS IB_SA_COMP_MASK(14)
125#define IB_SA_PATH_REC_SL IB_SA_COMP_MASK(15)
126#define IB_SA_PATH_REC_MTU_SELECTOR IB_SA_COMP_MASK(16)
127#define IB_SA_PATH_REC_MTU IB_SA_COMP_MASK(17)
128#define IB_SA_PATH_REC_RATE_SELECTOR IB_SA_COMP_MASK(18)
129#define IB_SA_PATH_REC_RATE IB_SA_COMP_MASK(19)
130#define IB_SA_PATH_REC_PACKET_LIFE_TIME_SELECTOR IB_SA_COMP_MASK(20)
131#define IB_SA_PATH_REC_PACKET_LIFE_TIME IB_SA_COMP_MASK(21)
132#define IB_SA_PATH_REC_PREFERENCE IB_SA_COMP_MASK(22)
133
134struct ib_sa_path_rec {
135 __be64 service_id;
136 union ib_gid dgid;
137 union ib_gid sgid;
138 __be16 dlid;
139 __be16 slid;
140 int raw_traffic;
141 /* reserved */
142 __be32 flow_label;
143 u8 hop_limit;
144 u8 traffic_class;
145 int reversible;
146 u8 numb_path;
147 __be16 pkey;
148 __be16 qos_class;
149 u8 sl;
150 u8 mtu_selector;
151 u8 mtu;
152 u8 rate_selector;
153 u8 rate;
154 u8 packet_life_time_selector;
155 u8 packet_life_time;
156 u8 preference;
157};
158
159#define IB_SA_MCMEMBER_REC_MGID IB_SA_COMP_MASK( 0)
160#define IB_SA_MCMEMBER_REC_PORT_GID IB_SA_COMP_MASK( 1)
161#define IB_SA_MCMEMBER_REC_QKEY IB_SA_COMP_MASK( 2)
162#define IB_SA_MCMEMBER_REC_MLID IB_SA_COMP_MASK( 3)
163#define IB_SA_MCMEMBER_REC_MTU_SELECTOR IB_SA_COMP_MASK( 4)
164#define IB_SA_MCMEMBER_REC_MTU IB_SA_COMP_MASK( 5)
165#define IB_SA_MCMEMBER_REC_TRAFFIC_CLASS IB_SA_COMP_MASK( 6)
166#define IB_SA_MCMEMBER_REC_PKEY IB_SA_COMP_MASK( 7)
167#define IB_SA_MCMEMBER_REC_RATE_SELECTOR IB_SA_COMP_MASK( 8)
168#define IB_SA_MCMEMBER_REC_RATE IB_SA_COMP_MASK( 9)
169#define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR IB_SA_COMP_MASK(10)
170#define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME IB_SA_COMP_MASK(11)
171#define IB_SA_MCMEMBER_REC_SL IB_SA_COMP_MASK(12)
172#define IB_SA_MCMEMBER_REC_FLOW_LABEL IB_SA_COMP_MASK(13)
173#define IB_SA_MCMEMBER_REC_HOP_LIMIT IB_SA_COMP_MASK(14)
174#define IB_SA_MCMEMBER_REC_SCOPE IB_SA_COMP_MASK(15)
175#define IB_SA_MCMEMBER_REC_JOIN_STATE IB_SA_COMP_MASK(16)
176#define IB_SA_MCMEMBER_REC_PROXY_JOIN IB_SA_COMP_MASK(17)
177
178struct ib_sa_mcmember_rec {
179 union ib_gid mgid;
180 union ib_gid port_gid;
181 __be32 qkey;
182 __be16 mlid;
183 u8 mtu_selector;
184 u8 mtu;
185 u8 traffic_class;
186 __be16 pkey;
187 u8 rate_selector;
188 u8 rate;
189 u8 packet_life_time_selector;
190 u8 packet_life_time;
191 u8 sl;
192 __be32 flow_label;
193 u8 hop_limit;
194 u8 scope;
195 u8 join_state;
196 int proxy_join;
197};
198
199/* Service Record Component Mask Sec 15.2.5.14 Ver 1.1 */
200#define IB_SA_SERVICE_REC_SERVICE_ID IB_SA_COMP_MASK( 0)
201#define IB_SA_SERVICE_REC_SERVICE_GID IB_SA_COMP_MASK( 1)
202#define IB_SA_SERVICE_REC_SERVICE_PKEY IB_SA_COMP_MASK( 2)
203/* reserved: 3 */
204#define IB_SA_SERVICE_REC_SERVICE_LEASE IB_SA_COMP_MASK( 4)
205#define IB_SA_SERVICE_REC_SERVICE_KEY IB_SA_COMP_MASK( 5)
206#define IB_SA_SERVICE_REC_SERVICE_NAME IB_SA_COMP_MASK( 6)
207#define IB_SA_SERVICE_REC_SERVICE_DATA8_0 IB_SA_COMP_MASK( 7)
208#define IB_SA_SERVICE_REC_SERVICE_DATA8_1 IB_SA_COMP_MASK( 8)
209#define IB_SA_SERVICE_REC_SERVICE_DATA8_2 IB_SA_COMP_MASK( 9)
210#define IB_SA_SERVICE_REC_SERVICE_DATA8_3 IB_SA_COMP_MASK(10)
211#define IB_SA_SERVICE_REC_SERVICE_DATA8_4 IB_SA_COMP_MASK(11)
212#define IB_SA_SERVICE_REC_SERVICE_DATA8_5 IB_SA_COMP_MASK(12)
213#define IB_SA_SERVICE_REC_SERVICE_DATA8_6 IB_SA_COMP_MASK(13)
214#define IB_SA_SERVICE_REC_SERVICE_DATA8_7 IB_SA_COMP_MASK(14)
215#define IB_SA_SERVICE_REC_SERVICE_DATA8_8 IB_SA_COMP_MASK(15)
216#define IB_SA_SERVICE_REC_SERVICE_DATA8_9 IB_SA_COMP_MASK(16)
217#define IB_SA_SERVICE_REC_SERVICE_DATA8_10 IB_SA_COMP_MASK(17)
218#define IB_SA_SERVICE_REC_SERVICE_DATA8_11 IB_SA_COMP_MASK(18)
219#define IB_SA_SERVICE_REC_SERVICE_DATA8_12 IB_SA_COMP_MASK(19)
220#define IB_SA_SERVICE_REC_SERVICE_DATA8_13 IB_SA_COMP_MASK(20)
221#define IB_SA_SERVICE_REC_SERVICE_DATA8_14 IB_SA_COMP_MASK(21)
222#define IB_SA_SERVICE_REC_SERVICE_DATA8_15 IB_SA_COMP_MASK(22)
223#define IB_SA_SERVICE_REC_SERVICE_DATA16_0 IB_SA_COMP_MASK(23)
224#define IB_SA_SERVICE_REC_SERVICE_DATA16_1 IB_SA_COMP_MASK(24)
225#define IB_SA_SERVICE_REC_SERVICE_DATA16_2 IB_SA_COMP_MASK(25)
226#define IB_SA_SERVICE_REC_SERVICE_DATA16_3 IB_SA_COMP_MASK(26)
227#define IB_SA_SERVICE_REC_SERVICE_DATA16_4 IB_SA_COMP_MASK(27)
228#define IB_SA_SERVICE_REC_SERVICE_DATA16_5 IB_SA_COMP_MASK(28)
229#define IB_SA_SERVICE_REC_SERVICE_DATA16_6 IB_SA_COMP_MASK(29)
230#define IB_SA_SERVICE_REC_SERVICE_DATA16_7 IB_SA_COMP_MASK(30)
231#define IB_SA_SERVICE_REC_SERVICE_DATA32_0 IB_SA_COMP_MASK(31)
232#define IB_SA_SERVICE_REC_SERVICE_DATA32_1 IB_SA_COMP_MASK(32)
233#define IB_SA_SERVICE_REC_SERVICE_DATA32_2 IB_SA_COMP_MASK(33)
234#define IB_SA_SERVICE_REC_SERVICE_DATA32_3 IB_SA_COMP_MASK(34)
235#define IB_SA_SERVICE_REC_SERVICE_DATA64_0 IB_SA_COMP_MASK(35)
236#define IB_SA_SERVICE_REC_SERVICE_DATA64_1 IB_SA_COMP_MASK(36)
237
238#define IB_DEFAULT_SERVICE_LEASE 0xFFFFFFFF
239
240struct ib_sa_service_rec {
241 u64 id;
242 union ib_gid gid;
243 __be16 pkey;
244 /* reserved */
245 u32 lease;
246 u8 key[16];
247 u8 name[64];
248 u8 data8[16];
249 u16 data16[8];
250 u32 data32[4];
251 u64 data64[2];
252};
253
254struct ib_sa_client {
255 atomic_t users;
256 struct completion comp;
257};
258
259/**
260 * ib_sa_register_client - Register an SA client.
261 */
262void ib_sa_register_client(struct ib_sa_client *client);
263
264/**
265 * ib_sa_unregister_client - Deregister an SA client.
266 * @client: Client object to deregister.
267 */
268void ib_sa_unregister_client(struct ib_sa_client *client);
269
270struct ib_sa_query;
271
272void ib_sa_cancel_query(int id, struct ib_sa_query *query);
273
274int ib_sa_path_rec_get(struct ib_sa_client *client,
275 struct ib_device *device, u8 port_num,
276 struct ib_sa_path_rec *rec,
277 ib_sa_comp_mask comp_mask,
278 int timeout_ms, gfp_t gfp_mask,
279 void (*callback)(int status,
280 struct ib_sa_path_rec *resp,
281 void *context),
282 void *context,
283 struct ib_sa_query **query);
284
285int ib_sa_service_rec_query(struct ib_sa_client *client,
286 struct ib_device *device, u8 port_num,
287 u8 method,
288 struct ib_sa_service_rec *rec,
289 ib_sa_comp_mask comp_mask,
290 int timeout_ms, gfp_t gfp_mask,
291 void (*callback)(int status,
292 struct ib_sa_service_rec *resp,
293 void *context),
294 void *context,
295 struct ib_sa_query **sa_query);
296
297struct ib_sa_multicast {
298 struct ib_sa_mcmember_rec rec;
299 ib_sa_comp_mask comp_mask;
300 int (*callback)(int status,
301 struct ib_sa_multicast *multicast);
302 void *context;
303};
304
305/**
306 * ib_sa_join_multicast - Initiates a join request to the specified multicast
307 * group.
308 * @client: SA client
309 * @device: Device associated with the multicast group.
310 * @port_num: Port on the specified device to associate with the multicast
311 * group.
312 * @rec: SA multicast member record specifying group attributes.
313 * @comp_mask: Component mask indicating which group attributes of %rec are
314 * valid.
315 * @gfp_mask: GFP mask for memory allocations.
316 * @callback: User callback invoked once the join operation completes.
317 * @context: User specified context stored with the ib_sa_multicast structure.
318 *
319 * This call initiates a multicast join request with the SA for the specified
320 * multicast group. If the join operation is started successfully, it returns
321 * an ib_sa_multicast structure that is used to track the multicast operation.
322 * Users must free this structure by calling ib_free_multicast, even if the
323 * join operation later fails. (The callback status is non-zero.)
324 *
325 * If the join operation fails; status will be non-zero, with the following
326 * failures possible:
327 * -ETIMEDOUT: The request timed out.
328 * -EIO: An error occurred sending the query.
329 * -EINVAL: The MCMemberRecord values differed from the existing group's.
330 * -ENETRESET: Indicates that an fatal error has occurred on the multicast
331 * group, and the user must rejoin the group to continue using it.
332 */
333struct ib_sa_multicast *ib_sa_join_multicast(struct ib_sa_client *client,
334 struct ib_device *device, u8 port_num,
335 struct ib_sa_mcmember_rec *rec,
336 ib_sa_comp_mask comp_mask, gfp_t gfp_mask,
337 int (*callback)(int status,
338 struct ib_sa_multicast
339 *multicast),
340 void *context);
341
342/**
343 * ib_free_multicast - Frees the multicast tracking structure, and releases
344 * any reference on the multicast group.
345 * @multicast: Multicast tracking structure allocated by ib_join_multicast.
346 *
347 * This call blocks until the multicast identifier is destroyed. It may
348 * not be called from within the multicast callback; however, returning a non-
349 * zero value from the callback will result in destroying the multicast
350 * tracking structure.
351 */
352void ib_sa_free_multicast(struct ib_sa_multicast *multicast);
353
354/**
355 * ib_get_mcmember_rec - Looks up a multicast member record by its MGID and
356 * returns it if found.
357 * @device: Device associated with the multicast group.
358 * @port_num: Port on the specified device to associate with the multicast
359 * group.
360 * @mgid: MGID of multicast group.
361 * @rec: Location to copy SA multicast member record.
362 */
363int ib_sa_get_mcmember_rec(struct ib_device *device, u8 port_num,
364 union ib_gid *mgid, struct ib_sa_mcmember_rec *rec);
365
366/**
367 * ib_init_ah_from_mcmember - Initialize address handle attributes based on
368 * an SA multicast member record.
369 */
370int ib_init_ah_from_mcmember(struct ib_device *device, u8 port_num,
371 struct ib_sa_mcmember_rec *rec,
372 struct ib_ah_attr *ah_attr);
373
374/**
375 * ib_init_ah_from_path - Initialize address handle attributes based on an SA
376 * path record.
377 */
378int ib_init_ah_from_path(struct ib_device *device, u8 port_num,
379 struct ib_sa_path_rec *rec,
380 struct ib_ah_attr *ah_attr);
381
382/**
383 * ib_sa_unpack_path - Convert a path record from MAD format to struct
384 * ib_sa_path_rec.
385 */
386void ib_sa_unpack_path(void *attribute, struct ib_sa_path_rec *rec);
387
388#endif /* IB_SA_H */
1/*
2 * Copyright (c) 2004 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Voltaire, Inc. All rights reserved.
4 * Copyright (c) 2006 Intel Corporation. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35#ifndef IB_SA_H
36#define IB_SA_H
37
38#include <linux/completion.h>
39#include <linux/compiler.h>
40
41#include <linux/atomic.h>
42#include <linux/netdevice.h>
43
44#include <rdma/ib_verbs.h>
45#include <rdma/ib_mad.h>
46
47enum {
48 IB_SA_CLASS_VERSION = 2, /* IB spec version 1.1/1.2 */
49
50 IB_SA_METHOD_GET_TABLE = 0x12,
51 IB_SA_METHOD_GET_TABLE_RESP = 0x92,
52 IB_SA_METHOD_DELETE = 0x15,
53 IB_SA_METHOD_DELETE_RESP = 0x95,
54 IB_SA_METHOD_GET_MULTI = 0x14,
55 IB_SA_METHOD_GET_MULTI_RESP = 0x94,
56 IB_SA_METHOD_GET_TRACE_TBL = 0x13
57};
58
59enum {
60 IB_SA_ATTR_CLASS_PORTINFO = 0x01,
61 IB_SA_ATTR_NOTICE = 0x02,
62 IB_SA_ATTR_INFORM_INFO = 0x03,
63 IB_SA_ATTR_NODE_REC = 0x11,
64 IB_SA_ATTR_PORT_INFO_REC = 0x12,
65 IB_SA_ATTR_SL2VL_REC = 0x13,
66 IB_SA_ATTR_SWITCH_REC = 0x14,
67 IB_SA_ATTR_LINEAR_FDB_REC = 0x15,
68 IB_SA_ATTR_RANDOM_FDB_REC = 0x16,
69 IB_SA_ATTR_MCAST_FDB_REC = 0x17,
70 IB_SA_ATTR_SM_INFO_REC = 0x18,
71 IB_SA_ATTR_LINK_REC = 0x20,
72 IB_SA_ATTR_GUID_INFO_REC = 0x30,
73 IB_SA_ATTR_SERVICE_REC = 0x31,
74 IB_SA_ATTR_PARTITION_REC = 0x33,
75 IB_SA_ATTR_PATH_REC = 0x35,
76 IB_SA_ATTR_VL_ARB_REC = 0x36,
77 IB_SA_ATTR_MC_MEMBER_REC = 0x38,
78 IB_SA_ATTR_TRACE_REC = 0x39,
79 IB_SA_ATTR_MULTI_PATH_REC = 0x3a,
80 IB_SA_ATTR_SERVICE_ASSOC_REC = 0x3b,
81 IB_SA_ATTR_INFORM_INFO_REC = 0xf3
82};
83
84enum ib_sa_selector {
85 IB_SA_GT = 0,
86 IB_SA_LT = 1,
87 IB_SA_EQ = 2,
88 /*
89 * The meaning of "best" depends on the attribute: for
90 * example, for MTU best will return the largest available
91 * MTU, while for packet life time, best will return the
92 * smallest available life time.
93 */
94 IB_SA_BEST = 3
95};
96
97/*
98 * Structures for SA records are named "struct ib_sa_xxx_rec." No
99 * attempt is made to pack structures to match the physical layout of
100 * SA records in SA MADs; all packing and unpacking is handled by the
101 * SA query code.
102 *
103 * For a record with structure ib_sa_xxx_rec, the naming convention
104 * for the component mask value for field yyy is IB_SA_XXX_REC_YYY (we
105 * never use different abbreviations or otherwise change the spelling
106 * of xxx/yyy between ib_sa_xxx_rec.yyy and IB_SA_XXX_REC_YYY).
107 *
108 * Reserved rows are indicated with comments to help maintainability.
109 */
110
111#define IB_SA_PATH_REC_SERVICE_ID (IB_SA_COMP_MASK( 0) |\
112 IB_SA_COMP_MASK( 1))
113#define IB_SA_PATH_REC_DGID IB_SA_COMP_MASK( 2)
114#define IB_SA_PATH_REC_SGID IB_SA_COMP_MASK( 3)
115#define IB_SA_PATH_REC_DLID IB_SA_COMP_MASK( 4)
116#define IB_SA_PATH_REC_SLID IB_SA_COMP_MASK( 5)
117#define IB_SA_PATH_REC_RAW_TRAFFIC IB_SA_COMP_MASK( 6)
118/* reserved: 7 */
119#define IB_SA_PATH_REC_FLOW_LABEL IB_SA_COMP_MASK( 8)
120#define IB_SA_PATH_REC_HOP_LIMIT IB_SA_COMP_MASK( 9)
121#define IB_SA_PATH_REC_TRAFFIC_CLASS IB_SA_COMP_MASK(10)
122#define IB_SA_PATH_REC_REVERSIBLE IB_SA_COMP_MASK(11)
123#define IB_SA_PATH_REC_NUMB_PATH IB_SA_COMP_MASK(12)
124#define IB_SA_PATH_REC_PKEY IB_SA_COMP_MASK(13)
125#define IB_SA_PATH_REC_QOS_CLASS IB_SA_COMP_MASK(14)
126#define IB_SA_PATH_REC_SL IB_SA_COMP_MASK(15)
127#define IB_SA_PATH_REC_MTU_SELECTOR IB_SA_COMP_MASK(16)
128#define IB_SA_PATH_REC_MTU IB_SA_COMP_MASK(17)
129#define IB_SA_PATH_REC_RATE_SELECTOR IB_SA_COMP_MASK(18)
130#define IB_SA_PATH_REC_RATE IB_SA_COMP_MASK(19)
131#define IB_SA_PATH_REC_PACKET_LIFE_TIME_SELECTOR IB_SA_COMP_MASK(20)
132#define IB_SA_PATH_REC_PACKET_LIFE_TIME IB_SA_COMP_MASK(21)
133#define IB_SA_PATH_REC_PREFERENCE IB_SA_COMP_MASK(22)
134
135struct ib_sa_path_rec {
136 __be64 service_id;
137 union ib_gid dgid;
138 union ib_gid sgid;
139 __be16 dlid;
140 __be16 slid;
141 int raw_traffic;
142 /* reserved */
143 __be32 flow_label;
144 u8 hop_limit;
145 u8 traffic_class;
146 int reversible;
147 u8 numb_path;
148 __be16 pkey;
149 __be16 qos_class;
150 u8 sl;
151 u8 mtu_selector;
152 u8 mtu;
153 u8 rate_selector;
154 u8 rate;
155 u8 packet_life_time_selector;
156 u8 packet_life_time;
157 u8 preference;
158 u8 dmac[ETH_ALEN];
159 /* ignored in IB */
160 int ifindex;
161 /* ignored in IB */
162 struct net *net;
163 enum ib_gid_type gid_type;
164};
165
166static inline struct net_device *ib_get_ndev_from_path(struct ib_sa_path_rec *rec)
167{
168 return rec->net ? dev_get_by_index(rec->net, rec->ifindex) : NULL;
169}
170
171#define IB_SA_MCMEMBER_REC_MGID IB_SA_COMP_MASK( 0)
172#define IB_SA_MCMEMBER_REC_PORT_GID IB_SA_COMP_MASK( 1)
173#define IB_SA_MCMEMBER_REC_QKEY IB_SA_COMP_MASK( 2)
174#define IB_SA_MCMEMBER_REC_MLID IB_SA_COMP_MASK( 3)
175#define IB_SA_MCMEMBER_REC_MTU_SELECTOR IB_SA_COMP_MASK( 4)
176#define IB_SA_MCMEMBER_REC_MTU IB_SA_COMP_MASK( 5)
177#define IB_SA_MCMEMBER_REC_TRAFFIC_CLASS IB_SA_COMP_MASK( 6)
178#define IB_SA_MCMEMBER_REC_PKEY IB_SA_COMP_MASK( 7)
179#define IB_SA_MCMEMBER_REC_RATE_SELECTOR IB_SA_COMP_MASK( 8)
180#define IB_SA_MCMEMBER_REC_RATE IB_SA_COMP_MASK( 9)
181#define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR IB_SA_COMP_MASK(10)
182#define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME IB_SA_COMP_MASK(11)
183#define IB_SA_MCMEMBER_REC_SL IB_SA_COMP_MASK(12)
184#define IB_SA_MCMEMBER_REC_FLOW_LABEL IB_SA_COMP_MASK(13)
185#define IB_SA_MCMEMBER_REC_HOP_LIMIT IB_SA_COMP_MASK(14)
186#define IB_SA_MCMEMBER_REC_SCOPE IB_SA_COMP_MASK(15)
187#define IB_SA_MCMEMBER_REC_JOIN_STATE IB_SA_COMP_MASK(16)
188#define IB_SA_MCMEMBER_REC_PROXY_JOIN IB_SA_COMP_MASK(17)
189
190struct ib_sa_mcmember_rec {
191 union ib_gid mgid;
192 union ib_gid port_gid;
193 __be32 qkey;
194 __be16 mlid;
195 u8 mtu_selector;
196 u8 mtu;
197 u8 traffic_class;
198 __be16 pkey;
199 u8 rate_selector;
200 u8 rate;
201 u8 packet_life_time_selector;
202 u8 packet_life_time;
203 u8 sl;
204 __be32 flow_label;
205 u8 hop_limit;
206 u8 scope;
207 u8 join_state;
208 int proxy_join;
209};
210
211/* Service Record Component Mask Sec 15.2.5.14 Ver 1.1 */
212#define IB_SA_SERVICE_REC_SERVICE_ID IB_SA_COMP_MASK( 0)
213#define IB_SA_SERVICE_REC_SERVICE_GID IB_SA_COMP_MASK( 1)
214#define IB_SA_SERVICE_REC_SERVICE_PKEY IB_SA_COMP_MASK( 2)
215/* reserved: 3 */
216#define IB_SA_SERVICE_REC_SERVICE_LEASE IB_SA_COMP_MASK( 4)
217#define IB_SA_SERVICE_REC_SERVICE_KEY IB_SA_COMP_MASK( 5)
218#define IB_SA_SERVICE_REC_SERVICE_NAME IB_SA_COMP_MASK( 6)
219#define IB_SA_SERVICE_REC_SERVICE_DATA8_0 IB_SA_COMP_MASK( 7)
220#define IB_SA_SERVICE_REC_SERVICE_DATA8_1 IB_SA_COMP_MASK( 8)
221#define IB_SA_SERVICE_REC_SERVICE_DATA8_2 IB_SA_COMP_MASK( 9)
222#define IB_SA_SERVICE_REC_SERVICE_DATA8_3 IB_SA_COMP_MASK(10)
223#define IB_SA_SERVICE_REC_SERVICE_DATA8_4 IB_SA_COMP_MASK(11)
224#define IB_SA_SERVICE_REC_SERVICE_DATA8_5 IB_SA_COMP_MASK(12)
225#define IB_SA_SERVICE_REC_SERVICE_DATA8_6 IB_SA_COMP_MASK(13)
226#define IB_SA_SERVICE_REC_SERVICE_DATA8_7 IB_SA_COMP_MASK(14)
227#define IB_SA_SERVICE_REC_SERVICE_DATA8_8 IB_SA_COMP_MASK(15)
228#define IB_SA_SERVICE_REC_SERVICE_DATA8_9 IB_SA_COMP_MASK(16)
229#define IB_SA_SERVICE_REC_SERVICE_DATA8_10 IB_SA_COMP_MASK(17)
230#define IB_SA_SERVICE_REC_SERVICE_DATA8_11 IB_SA_COMP_MASK(18)
231#define IB_SA_SERVICE_REC_SERVICE_DATA8_12 IB_SA_COMP_MASK(19)
232#define IB_SA_SERVICE_REC_SERVICE_DATA8_13 IB_SA_COMP_MASK(20)
233#define IB_SA_SERVICE_REC_SERVICE_DATA8_14 IB_SA_COMP_MASK(21)
234#define IB_SA_SERVICE_REC_SERVICE_DATA8_15 IB_SA_COMP_MASK(22)
235#define IB_SA_SERVICE_REC_SERVICE_DATA16_0 IB_SA_COMP_MASK(23)
236#define IB_SA_SERVICE_REC_SERVICE_DATA16_1 IB_SA_COMP_MASK(24)
237#define IB_SA_SERVICE_REC_SERVICE_DATA16_2 IB_SA_COMP_MASK(25)
238#define IB_SA_SERVICE_REC_SERVICE_DATA16_3 IB_SA_COMP_MASK(26)
239#define IB_SA_SERVICE_REC_SERVICE_DATA16_4 IB_SA_COMP_MASK(27)
240#define IB_SA_SERVICE_REC_SERVICE_DATA16_5 IB_SA_COMP_MASK(28)
241#define IB_SA_SERVICE_REC_SERVICE_DATA16_6 IB_SA_COMP_MASK(29)
242#define IB_SA_SERVICE_REC_SERVICE_DATA16_7 IB_SA_COMP_MASK(30)
243#define IB_SA_SERVICE_REC_SERVICE_DATA32_0 IB_SA_COMP_MASK(31)
244#define IB_SA_SERVICE_REC_SERVICE_DATA32_1 IB_SA_COMP_MASK(32)
245#define IB_SA_SERVICE_REC_SERVICE_DATA32_2 IB_SA_COMP_MASK(33)
246#define IB_SA_SERVICE_REC_SERVICE_DATA32_3 IB_SA_COMP_MASK(34)
247#define IB_SA_SERVICE_REC_SERVICE_DATA64_0 IB_SA_COMP_MASK(35)
248#define IB_SA_SERVICE_REC_SERVICE_DATA64_1 IB_SA_COMP_MASK(36)
249
250#define IB_DEFAULT_SERVICE_LEASE 0xFFFFFFFF
251
252struct ib_sa_service_rec {
253 u64 id;
254 union ib_gid gid;
255 __be16 pkey;
256 /* reserved */
257 u32 lease;
258 u8 key[16];
259 u8 name[64];
260 u8 data8[16];
261 u16 data16[8];
262 u32 data32[4];
263 u64 data64[2];
264};
265
266#define IB_SA_GUIDINFO_REC_LID IB_SA_COMP_MASK(0)
267#define IB_SA_GUIDINFO_REC_BLOCK_NUM IB_SA_COMP_MASK(1)
268#define IB_SA_GUIDINFO_REC_RES1 IB_SA_COMP_MASK(2)
269#define IB_SA_GUIDINFO_REC_RES2 IB_SA_COMP_MASK(3)
270#define IB_SA_GUIDINFO_REC_GID0 IB_SA_COMP_MASK(4)
271#define IB_SA_GUIDINFO_REC_GID1 IB_SA_COMP_MASK(5)
272#define IB_SA_GUIDINFO_REC_GID2 IB_SA_COMP_MASK(6)
273#define IB_SA_GUIDINFO_REC_GID3 IB_SA_COMP_MASK(7)
274#define IB_SA_GUIDINFO_REC_GID4 IB_SA_COMP_MASK(8)
275#define IB_SA_GUIDINFO_REC_GID5 IB_SA_COMP_MASK(9)
276#define IB_SA_GUIDINFO_REC_GID6 IB_SA_COMP_MASK(10)
277#define IB_SA_GUIDINFO_REC_GID7 IB_SA_COMP_MASK(11)
278
279struct ib_sa_guidinfo_rec {
280 __be16 lid;
281 u8 block_num;
282 /* reserved */
283 u8 res1;
284 __be32 res2;
285 u8 guid_info_list[64];
286};
287
288struct ib_sa_client {
289 atomic_t users;
290 struct completion comp;
291};
292
293/**
294 * ib_sa_register_client - Register an SA client.
295 */
296void ib_sa_register_client(struct ib_sa_client *client);
297
298/**
299 * ib_sa_unregister_client - Deregister an SA client.
300 * @client: Client object to deregister.
301 */
302void ib_sa_unregister_client(struct ib_sa_client *client);
303
304struct ib_sa_query;
305
306void ib_sa_cancel_query(int id, struct ib_sa_query *query);
307
308int ib_sa_path_rec_get(struct ib_sa_client *client,
309 struct ib_device *device, u8 port_num,
310 struct ib_sa_path_rec *rec,
311 ib_sa_comp_mask comp_mask,
312 int timeout_ms, gfp_t gfp_mask,
313 void (*callback)(int status,
314 struct ib_sa_path_rec *resp,
315 void *context),
316 void *context,
317 struct ib_sa_query **query);
318
319int ib_sa_service_rec_query(struct ib_sa_client *client,
320 struct ib_device *device, u8 port_num,
321 u8 method,
322 struct ib_sa_service_rec *rec,
323 ib_sa_comp_mask comp_mask,
324 int timeout_ms, gfp_t gfp_mask,
325 void (*callback)(int status,
326 struct ib_sa_service_rec *resp,
327 void *context),
328 void *context,
329 struct ib_sa_query **sa_query);
330
331struct ib_sa_multicast {
332 struct ib_sa_mcmember_rec rec;
333 ib_sa_comp_mask comp_mask;
334 int (*callback)(int status,
335 struct ib_sa_multicast *multicast);
336 void *context;
337};
338
339/**
340 * ib_sa_join_multicast - Initiates a join request to the specified multicast
341 * group.
342 * @client: SA client
343 * @device: Device associated with the multicast group.
344 * @port_num: Port on the specified device to associate with the multicast
345 * group.
346 * @rec: SA multicast member record specifying group attributes.
347 * @comp_mask: Component mask indicating which group attributes of %rec are
348 * valid.
349 * @gfp_mask: GFP mask for memory allocations.
350 * @callback: User callback invoked once the join operation completes.
351 * @context: User specified context stored with the ib_sa_multicast structure.
352 *
353 * This call initiates a multicast join request with the SA for the specified
354 * multicast group. If the join operation is started successfully, it returns
355 * an ib_sa_multicast structure that is used to track the multicast operation.
356 * Users must free this structure by calling ib_free_multicast, even if the
357 * join operation later fails. (The callback status is non-zero.)
358 *
359 * If the join operation fails; status will be non-zero, with the following
360 * failures possible:
361 * -ETIMEDOUT: The request timed out.
362 * -EIO: An error occurred sending the query.
363 * -EINVAL: The MCMemberRecord values differed from the existing group's.
364 * -ENETRESET: Indicates that an fatal error has occurred on the multicast
365 * group, and the user must rejoin the group to continue using it.
366 */
367struct ib_sa_multicast *ib_sa_join_multicast(struct ib_sa_client *client,
368 struct ib_device *device, u8 port_num,
369 struct ib_sa_mcmember_rec *rec,
370 ib_sa_comp_mask comp_mask, gfp_t gfp_mask,
371 int (*callback)(int status,
372 struct ib_sa_multicast
373 *multicast),
374 void *context);
375
376/**
377 * ib_free_multicast - Frees the multicast tracking structure, and releases
378 * any reference on the multicast group.
379 * @multicast: Multicast tracking structure allocated by ib_join_multicast.
380 *
381 * This call blocks until the multicast identifier is destroyed. It may
382 * not be called from within the multicast callback; however, returning a non-
383 * zero value from the callback will result in destroying the multicast
384 * tracking structure.
385 */
386void ib_sa_free_multicast(struct ib_sa_multicast *multicast);
387
388/**
389 * ib_get_mcmember_rec - Looks up a multicast member record by its MGID and
390 * returns it if found.
391 * @device: Device associated with the multicast group.
392 * @port_num: Port on the specified device to associate with the multicast
393 * group.
394 * @mgid: MGID of multicast group.
395 * @rec: Location to copy SA multicast member record.
396 */
397int ib_sa_get_mcmember_rec(struct ib_device *device, u8 port_num,
398 union ib_gid *mgid, struct ib_sa_mcmember_rec *rec);
399
400/**
401 * ib_init_ah_from_mcmember - Initialize address handle attributes based on
402 * an SA multicast member record.
403 */
404int ib_init_ah_from_mcmember(struct ib_device *device, u8 port_num,
405 struct ib_sa_mcmember_rec *rec,
406 struct net_device *ndev,
407 enum ib_gid_type gid_type,
408 struct ib_ah_attr *ah_attr);
409
410/**
411 * ib_init_ah_from_path - Initialize address handle attributes based on an SA
412 * path record.
413 */
414int ib_init_ah_from_path(struct ib_device *device, u8 port_num,
415 struct ib_sa_path_rec *rec,
416 struct ib_ah_attr *ah_attr);
417
418/**
419 * ib_sa_pack_path - Conert a path record from struct ib_sa_path_rec
420 * to IB MAD wire format.
421 */
422void ib_sa_pack_path(struct ib_sa_path_rec *rec, void *attribute);
423
424/**
425 * ib_sa_unpack_path - Convert a path record from MAD format to struct
426 * ib_sa_path_rec.
427 */
428void ib_sa_unpack_path(void *attribute, struct ib_sa_path_rec *rec);
429
430/* Support GuidInfoRecord */
431int ib_sa_guid_info_rec_query(struct ib_sa_client *client,
432 struct ib_device *device, u8 port_num,
433 struct ib_sa_guidinfo_rec *rec,
434 ib_sa_comp_mask comp_mask, u8 method,
435 int timeout_ms, gfp_t gfp_mask,
436 void (*callback)(int status,
437 struct ib_sa_guidinfo_rec *resp,
438 void *context),
439 void *context,
440 struct ib_sa_query **sa_query);
441
442#endif /* IB_SA_H */