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1 /*
2  * Copyright (c) 2004 Topspin Communications.  All rights reserved.
3  * Copyright (c) 2005 Voltaire, Inc.  All rights reserved.
4  *
5  * This software is available to you under a choice of one of two
6  * licenses.  You may choose to be licensed under the terms of the GNU
7  * General Public License (GPL) Version 2, available from the file
8  * COPYING in the main directory of this source tree, or the
9  * OpenIB.org BSD license below:
10  *
11  *     Redistribution and use in source and binary forms, with or
12  *     without modification, are permitted provided that the following
13  *     conditions are met:
14  *
15  *      - Redistributions of source code must retain the above
16  *        copyright notice, this list of conditions and the following
17  *        disclaimer.
18  *
19  *      - Redistributions in binary form must reproduce the above
20  *        copyright notice, this list of conditions and the following
21  *        disclaimer in the documentation and/or other materials
22  *        provided with the distribution.
23  *
24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31  * SOFTWARE.
32  *
33  * $Id: ib_sa.h 2811 2005-07-06 18:11:43Z halr $
34  */
35
36 #ifndef IB_SA_H
37 #define IB_SA_H
38
39 #include <linux/compiler.h>
40
41 #include <rdma/ib_verbs.h>
42 #include <rdma/ib_mad.h>
43
44 enum {
45         IB_SA_CLASS_VERSION             = 2,    /* IB spec version 1.1/1.2 */
46
47         IB_SA_METHOD_GET_TABLE          = 0x12,
48         IB_SA_METHOD_GET_TABLE_RESP     = 0x92,
49         IB_SA_METHOD_DELETE             = 0x15,
50         IB_SA_METHOD_DELETE_RESP        = 0x95,
51         IB_SA_METHOD_GET_MULTI          = 0x14,
52         IB_SA_METHOD_GET_MULTI_RESP     = 0x94,
53         IB_SA_METHOD_GET_TRACE_TBL      = 0x13
54 };
55
56 enum ib_sa_selector {
57         IB_SA_GTE  = 0,
58         IB_SA_LTE  = 1,
59         IB_SA_EQ   = 2,
60         /*
61          * The meaning of "best" depends on the attribute: for
62          * example, for MTU best will return the largest available
63          * MTU, while for packet life time, best will return the
64          * smallest available life time.
65          */
66         IB_SA_BEST = 3
67 };
68
69 enum ib_sa_rate {
70         IB_SA_RATE_2_5_GBPS = 2,
71         IB_SA_RATE_5_GBPS   = 5,
72         IB_SA_RATE_10_GBPS  = 3,
73         IB_SA_RATE_20_GBPS  = 6,
74         IB_SA_RATE_30_GBPS  = 4,
75         IB_SA_RATE_40_GBPS  = 7,
76         IB_SA_RATE_60_GBPS  = 8,
77         IB_SA_RATE_80_GBPS  = 9,
78         IB_SA_RATE_120_GBPS = 10
79 };
80
81 static inline int ib_sa_rate_enum_to_int(enum ib_sa_rate rate)
82 {
83         switch (rate) {
84         case IB_SA_RATE_2_5_GBPS: return  1;
85         case IB_SA_RATE_5_GBPS:   return  2;
86         case IB_SA_RATE_10_GBPS:  return  4;
87         case IB_SA_RATE_20_GBPS:  return  8;
88         case IB_SA_RATE_30_GBPS:  return 12;
89         case IB_SA_RATE_40_GBPS:  return 16;
90         case IB_SA_RATE_60_GBPS:  return 24;
91         case IB_SA_RATE_80_GBPS:  return 32;
92         case IB_SA_RATE_120_GBPS: return 48;
93         default:                  return -1;
94         }
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_query;
257
258 void ib_sa_cancel_query(int id, struct ib_sa_query *query);
259
260 int ib_sa_path_rec_get(struct ib_device *device, u8 port_num,
261                        struct ib_sa_path_rec *rec,
262                        ib_sa_comp_mask comp_mask,
263                        int timeout_ms, unsigned int __nocast gfp_mask,
264                        void (*callback)(int status,
265                                         struct ib_sa_path_rec *resp,
266                                         void *context),
267                        void *context,
268                        struct ib_sa_query **query);
269
270 int ib_sa_mcmember_rec_query(struct ib_device *device, u8 port_num,
271                              u8 method,
272                              struct ib_sa_mcmember_rec *rec,
273                              ib_sa_comp_mask comp_mask,
274                              int timeout_ms, unsigned int __nocast gfp_mask,
275                              void (*callback)(int status,
276                                               struct ib_sa_mcmember_rec *resp,
277                                               void *context),
278                              void *context,
279                              struct ib_sa_query **query);
280
281 int ib_sa_service_rec_query(struct ib_device *device, u8 port_num,
282                          u8 method,
283                          struct ib_sa_service_rec *rec,
284                          ib_sa_comp_mask comp_mask,
285                          int timeout_ms, unsigned int __nocast gfp_mask,
286                          void (*callback)(int status,
287                                           struct ib_sa_service_rec *resp,
288                                           void *context),
289                          void *context,
290                          struct ib_sa_query **sa_query);
291
292 /**
293  * ib_sa_mcmember_rec_set - Start an MCMember set query
294  * @device:device to send query on
295  * @port_num: port number to send query on
296  * @rec:MCMember Record to send in query
297  * @comp_mask:component mask to send in query
298  * @timeout_ms:time to wait for response
299  * @gfp_mask:GFP mask to use for internal allocations
300  * @callback:function called when query completes, times out or is
301  * canceled
302  * @context:opaque user context passed to callback
303  * @sa_query:query context, used to cancel query
304  *
305  * Send an MCMember Set query to the SA (eg to join a multicast
306  * group).  The callback function will be called when the query
307  * completes (or fails); status is 0 for a successful response, -EINTR
308  * if the query is canceled, -ETIMEDOUT is the query timed out, or
309  * -EIO if an error occurred sending the query.  The resp parameter of
310  * the callback is only valid if status is 0.
311  *
312  * If the return value of ib_sa_mcmember_rec_set() is negative, it is
313  * an error code.  Otherwise it is a query ID that can be used to
314  * cancel the query.
315  */
316 static inline int
317 ib_sa_mcmember_rec_set(struct ib_device *device, u8 port_num,
318                        struct ib_sa_mcmember_rec *rec,
319                        ib_sa_comp_mask comp_mask,
320                        int timeout_ms, unsigned int __nocast gfp_mask,
321                        void (*callback)(int status,
322                                         struct ib_sa_mcmember_rec *resp,
323                                         void *context),
324                        void *context,
325                        struct ib_sa_query **query)
326 {
327         return ib_sa_mcmember_rec_query(device, port_num,
328                                         IB_MGMT_METHOD_SET,
329                                         rec, comp_mask,
330                                         timeout_ms, gfp_mask, callback,
331                                         context, query);
332 }
333
334 /**
335  * ib_sa_mcmember_rec_delete - Start an MCMember delete query
336  * @device:device to send query on
337  * @port_num: port number to send query on
338  * @rec:MCMember Record to send in query
339  * @comp_mask:component mask to send in query
340  * @timeout_ms:time to wait for response
341  * @gfp_mask:GFP mask to use for internal allocations
342  * @callback:function called when query completes, times out or is
343  * canceled
344  * @context:opaque user context passed to callback
345  * @sa_query:query context, used to cancel query
346  *
347  * Send an MCMember Delete query to the SA (eg to leave a multicast
348  * group).  The callback function will be called when the query
349  * completes (or fails); status is 0 for a successful response, -EINTR
350  * if the query is canceled, -ETIMEDOUT is the query timed out, or
351  * -EIO if an error occurred sending the query.  The resp parameter of
352  * the callback is only valid if status is 0.
353  *
354  * If the return value of ib_sa_mcmember_rec_delete() is negative, it
355  * is an error code.  Otherwise it is a query ID that can be used to
356  * cancel the query.
357  */
358 static inline int
359 ib_sa_mcmember_rec_delete(struct ib_device *device, u8 port_num,
360                           struct ib_sa_mcmember_rec *rec,
361                           ib_sa_comp_mask comp_mask,
362                           int timeout_ms, unsigned int __nocast gfp_mask,
363                           void (*callback)(int status,
364                                            struct ib_sa_mcmember_rec *resp,
365                                            void *context),
366                           void *context,
367                           struct ib_sa_query **query)
368 {
369         return ib_sa_mcmember_rec_query(device, port_num,
370                                         IB_SA_METHOD_DELETE,
371                                         rec, comp_mask,
372                                         timeout_ms, gfp_mask, callback,
373                                         context, query);
374 }
375
376
377 #endif /* IB_SA_H */