]> CyberLeo.Net >> Repos - FreeBSD/releng/9.2.git/blob - sys/contrib/rdma/ib_sa.h
- Copy stable/9 to releng/9.2 as part of the 9.2-RELEASE cycle.
[FreeBSD/releng/9.2.git] / sys / contrib / rdma / 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  * $Id: ib_sa.h 2811 2005-07-06 18:11:43Z halr $
35  *
36  * $FreeBSD$
37  */
38
39 #ifndef IB_SA_H
40 #define IB_SA_H
41
42 #include <machine/atomic.h>
43
44 #include <contrib/rdma/ib_verbs.h>
45 #include <contrib/rdma/ib_mad.h>
46
47 enum {
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
59 enum {
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
84 enum 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 /* reserved:                                                             0 */
112 /* reserved:                                                             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 /* reserved:                                                            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
135 struct ib_sa_path_rec {
136         /* reserved */
137         /* reserved */
138         union ib_gid dgid;
139         union ib_gid sgid;
140         __be16       dlid;
141         __be16       slid;
142         int          raw_traffic;
143         /* reserved */
144         __be32       flow_label;
145         u8           hop_limit;
146         u8           traffic_class;
147         int          reversible;
148         u8           numb_path;
149         __be16       pkey;
150         /* reserved */
151         u8           sl;
152         u8           mtu_selector;
153         u8           mtu;
154         u8           rate_selector;
155         u8           rate;
156         u8           packet_life_time_selector;
157         u8           packet_life_time;
158         u8           preference;
159 };
160
161 #define IB_SA_MCMEMBER_REC_MGID                         IB_SA_COMP_MASK( 0)
162 #define IB_SA_MCMEMBER_REC_PORT_GID                     IB_SA_COMP_MASK( 1)
163 #define IB_SA_MCMEMBER_REC_QKEY                         IB_SA_COMP_MASK( 2)
164 #define IB_SA_MCMEMBER_REC_MLID                         IB_SA_COMP_MASK( 3)
165 #define IB_SA_MCMEMBER_REC_MTU_SELECTOR                 IB_SA_COMP_MASK( 4)
166 #define IB_SA_MCMEMBER_REC_MTU                          IB_SA_COMP_MASK( 5)
167 #define IB_SA_MCMEMBER_REC_TRAFFIC_CLASS                IB_SA_COMP_MASK( 6)
168 #define IB_SA_MCMEMBER_REC_PKEY                         IB_SA_COMP_MASK( 7)
169 #define IB_SA_MCMEMBER_REC_RATE_SELECTOR                IB_SA_COMP_MASK( 8)
170 #define IB_SA_MCMEMBER_REC_RATE                         IB_SA_COMP_MASK( 9)
171 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR    IB_SA_COMP_MASK(10)
172 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME             IB_SA_COMP_MASK(11)
173 #define IB_SA_MCMEMBER_REC_SL                           IB_SA_COMP_MASK(12)
174 #define IB_SA_MCMEMBER_REC_FLOW_LABEL                   IB_SA_COMP_MASK(13)
175 #define IB_SA_MCMEMBER_REC_HOP_LIMIT                    IB_SA_COMP_MASK(14)
176 #define IB_SA_MCMEMBER_REC_SCOPE                        IB_SA_COMP_MASK(15)
177 #define IB_SA_MCMEMBER_REC_JOIN_STATE                   IB_SA_COMP_MASK(16)
178 #define IB_SA_MCMEMBER_REC_PROXY_JOIN                   IB_SA_COMP_MASK(17)
179
180 struct ib_sa_mcmember_rec {
181         union ib_gid mgid;
182         union ib_gid port_gid;
183         __be32       qkey;
184         __be16       mlid;
185         u8           mtu_selector;
186         u8           mtu;
187         u8           traffic_class;
188         __be16       pkey;
189         u8           rate_selector;
190         u8           rate;
191         u8           packet_life_time_selector;
192         u8           packet_life_time;
193         u8           sl;
194         __be32       flow_label;
195         u8           hop_limit;
196         u8           scope;
197         u8           join_state;
198         int          proxy_join;
199 };
200
201 /* Service Record Component Mask Sec 15.2.5.14 Ver 1.1  */
202 #define IB_SA_SERVICE_REC_SERVICE_ID                    IB_SA_COMP_MASK( 0)
203 #define IB_SA_SERVICE_REC_SERVICE_GID                   IB_SA_COMP_MASK( 1)
204 #define IB_SA_SERVICE_REC_SERVICE_PKEY                  IB_SA_COMP_MASK( 2)
205 /* reserved:                                                             3 */
206 #define IB_SA_SERVICE_REC_SERVICE_LEASE                 IB_SA_COMP_MASK( 4)
207 #define IB_SA_SERVICE_REC_SERVICE_KEY                   IB_SA_COMP_MASK( 5)
208 #define IB_SA_SERVICE_REC_SERVICE_NAME                  IB_SA_COMP_MASK( 6)
209 #define IB_SA_SERVICE_REC_SERVICE_DATA8_0               IB_SA_COMP_MASK( 7)
210 #define IB_SA_SERVICE_REC_SERVICE_DATA8_1               IB_SA_COMP_MASK( 8)
211 #define IB_SA_SERVICE_REC_SERVICE_DATA8_2               IB_SA_COMP_MASK( 9)
212 #define IB_SA_SERVICE_REC_SERVICE_DATA8_3               IB_SA_COMP_MASK(10)
213 #define IB_SA_SERVICE_REC_SERVICE_DATA8_4               IB_SA_COMP_MASK(11)
214 #define IB_SA_SERVICE_REC_SERVICE_DATA8_5               IB_SA_COMP_MASK(12)
215 #define IB_SA_SERVICE_REC_SERVICE_DATA8_6               IB_SA_COMP_MASK(13)
216 #define IB_SA_SERVICE_REC_SERVICE_DATA8_7               IB_SA_COMP_MASK(14)
217 #define IB_SA_SERVICE_REC_SERVICE_DATA8_8               IB_SA_COMP_MASK(15)
218 #define IB_SA_SERVICE_REC_SERVICE_DATA8_9               IB_SA_COMP_MASK(16)
219 #define IB_SA_SERVICE_REC_SERVICE_DATA8_10              IB_SA_COMP_MASK(17)
220 #define IB_SA_SERVICE_REC_SERVICE_DATA8_11              IB_SA_COMP_MASK(18)
221 #define IB_SA_SERVICE_REC_SERVICE_DATA8_12              IB_SA_COMP_MASK(19)
222 #define IB_SA_SERVICE_REC_SERVICE_DATA8_13              IB_SA_COMP_MASK(20)
223 #define IB_SA_SERVICE_REC_SERVICE_DATA8_14              IB_SA_COMP_MASK(21)
224 #define IB_SA_SERVICE_REC_SERVICE_DATA8_15              IB_SA_COMP_MASK(22)
225 #define IB_SA_SERVICE_REC_SERVICE_DATA16_0              IB_SA_COMP_MASK(23)
226 #define IB_SA_SERVICE_REC_SERVICE_DATA16_1              IB_SA_COMP_MASK(24)
227 #define IB_SA_SERVICE_REC_SERVICE_DATA16_2              IB_SA_COMP_MASK(25)
228 #define IB_SA_SERVICE_REC_SERVICE_DATA16_3              IB_SA_COMP_MASK(26)
229 #define IB_SA_SERVICE_REC_SERVICE_DATA16_4              IB_SA_COMP_MASK(27)
230 #define IB_SA_SERVICE_REC_SERVICE_DATA16_5              IB_SA_COMP_MASK(28)
231 #define IB_SA_SERVICE_REC_SERVICE_DATA16_6              IB_SA_COMP_MASK(29)
232 #define IB_SA_SERVICE_REC_SERVICE_DATA16_7              IB_SA_COMP_MASK(30)
233 #define IB_SA_SERVICE_REC_SERVICE_DATA32_0              IB_SA_COMP_MASK(31)
234 #define IB_SA_SERVICE_REC_SERVICE_DATA32_1              IB_SA_COMP_MASK(32)
235 #define IB_SA_SERVICE_REC_SERVICE_DATA32_2              IB_SA_COMP_MASK(33)
236 #define IB_SA_SERVICE_REC_SERVICE_DATA32_3              IB_SA_COMP_MASK(34)
237 #define IB_SA_SERVICE_REC_SERVICE_DATA64_0              IB_SA_COMP_MASK(35)
238 #define IB_SA_SERVICE_REC_SERVICE_DATA64_1              IB_SA_COMP_MASK(36)
239
240 #define IB_DEFAULT_SERVICE_LEASE        0xFFFFFFFF
241
242 struct ib_sa_service_rec {
243         u64             id;
244         union ib_gid    gid;
245         __be16          pkey;
246         /* reserved */
247         u32             lease;
248         u8              key[16];
249         u8              name[64];
250         u8              data8[16];
251         u16             data16[8];
252         u32             data32[4];
253         u64             data64[2];
254 };
255
256 struct ib_sa_client {
257         volatile int users;
258 #ifdef notyet
259         struct completion comp;
260 #endif  
261 };
262
263 /**
264  * ib_sa_register_client - Register an SA client.
265  */
266 void ib_sa_register_client(struct ib_sa_client *client);
267
268 /**
269  * ib_sa_unregister_client - Deregister an SA client.
270  * @client: Client object to deregister.
271  */
272 void ib_sa_unregister_client(struct ib_sa_client *client);
273
274 struct ib_sa_query;
275
276 void ib_sa_cancel_query(int id, struct ib_sa_query *query);
277
278 int ib_sa_path_rec_get(struct ib_sa_client *client,
279                        struct ib_device *device, u8 port_num,
280                        struct ib_sa_path_rec *rec,
281                        ib_sa_comp_mask comp_mask,
282                        int timeout_ms, int gfp_mask,
283                        void (*callback)(int status,
284                                         struct ib_sa_path_rec *resp,
285                                         void *context),
286                        void *context,
287                        struct ib_sa_query **query);
288
289 int ib_sa_service_rec_query(struct ib_sa_client *client,
290                          struct ib_device *device, u8 port_num,
291                          u8 method,
292                          struct ib_sa_service_rec *rec,
293                          ib_sa_comp_mask comp_mask,
294                          int timeout_ms, int gfp_mask,
295                          void (*callback)(int status,
296                                           struct ib_sa_service_rec *resp,
297                                           void *context),
298                          void *context,
299                          struct ib_sa_query **sa_query);
300
301 struct ib_sa_multicast {
302         struct ib_sa_mcmember_rec rec;
303         ib_sa_comp_mask         comp_mask;
304         int                     (*callback)(int status,
305                                             struct ib_sa_multicast *multicast);
306         void                    *context;
307 };
308
309 /**
310  * ib_sa_join_multicast - Initiates a join request to the specified multicast
311  *   group.
312  * @client: SA client
313  * @device: Device associated with the multicast group.
314  * @port_num: Port on the specified device to associate with the multicast
315  *   group.
316  * @rec: SA multicast member record specifying group attributes.
317  * @comp_mask: Component mask indicating which group attributes of %rec are
318  *   valid.
319  * @gfp_mask: GFP mask for memory allocations.
320  * @callback: User callback invoked once the join operation completes.
321  * @context: User specified context stored with the ib_sa_multicast structure.
322  *
323  * This call initiates a multicast join request with the SA for the specified
324  * multicast group.  If the join operation is started successfully, it returns
325  * an ib_sa_multicast structure that is used to track the multicast operation.
326  * Users must free this structure by calling ib_free_multicast, even if the
327  * join operation later fails.  (The callback status is non-zero.)
328  *
329  * If the join operation fails; status will be non-zero, with the following
330  * failures possible:
331  * ETIMEDOUT: The request timed out.
332  * EIO: An error occurred sending the query.
333  * EINVAL: The MCMemberRecord values differed from the existing group's.
334  * ENETRESET: Indicates that an fatal error has occurred on the multicast
335  *   group, and the user must rejoin the group to continue using it.
336  */
337 struct ib_sa_multicast *ib_sa_join_multicast(struct ib_sa_client *client,
338                                              struct ib_device *device, u8 port_num,
339                                              struct ib_sa_mcmember_rec *rec,
340                                              ib_sa_comp_mask comp_mask, int gfp_mask,
341                                              int (*callback)(int status,
342                                                              struct ib_sa_multicast
343                                                                     *multicast),
344                                              void *context);
345
346 /**
347  * ib_free_multicast - Frees the multicast tracking structure, and releases
348  *    any reference on the multicast group.
349  * @multicast: Multicast tracking structure allocated by ib_join_multicast.
350  *
351  * This call blocks until the multicast identifier is destroyed.  It may
352  * not be called from within the multicast callback; however, returning a non-
353  * zero value from the callback will result in destroying the multicast
354  * tracking structure.
355  */
356 void ib_sa_free_multicast(struct ib_sa_multicast *multicast);
357
358 /**
359  * ib_get_mcmember_rec - Looks up a multicast member record by its MGID and
360  *   returns it if found.
361  * @device: Device associated with the multicast group.
362  * @port_num: Port on the specified device to associate with the multicast
363  *   group.
364  * @mgid: MGID of multicast group.
365  * @rec: Location to copy SA multicast member record.
366  */
367 int ib_sa_get_mcmember_rec(struct ib_device *device, u8 port_num,
368                            union ib_gid *mgid, struct ib_sa_mcmember_rec *rec);
369
370 /**
371  * ib_init_ah_from_mcmember - Initialize address handle attributes based on
372  * an SA multicast member record.
373  */
374 int ib_init_ah_from_mcmember(struct ib_device *device, u8 port_num,
375                              struct ib_sa_mcmember_rec *rec,
376                              struct ib_ah_attr *ah_attr);
377
378 /**
379  * ib_init_ah_from_path - Initialize address handle attributes based on an SA
380  *   path record.
381  */
382 int ib_init_ah_from_path(struct ib_device *device, u8 port_num,
383                          struct ib_sa_path_rec *rec,
384                          struct ib_ah_attr *ah_attr);
385
386 #endif /* IB_SA_H */