Merge head 'upstream' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev
[pandora-kernel.git] / drivers / infiniband / include / ib_sa.h
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 <ib_verbs.h>
42 #include <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 };
51
52 enum ib_sa_selector {
53         IB_SA_GTE  = 0,
54         IB_SA_LTE  = 1,
55         IB_SA_EQ   = 2,
56         /*
57          * The meaning of "best" depends on the attribute: for
58          * example, for MTU best will return the largest available
59          * MTU, while for packet life time, best will return the
60          * smallest available life time.
61          */
62         IB_SA_BEST = 3
63 };
64
65 enum ib_sa_rate {
66         IB_SA_RATE_2_5_GBPS = 2,
67         IB_SA_RATE_5_GBPS   = 5,
68         IB_SA_RATE_10_GBPS  = 3,
69         IB_SA_RATE_20_GBPS  = 6,
70         IB_SA_RATE_30_GBPS  = 4,
71         IB_SA_RATE_40_GBPS  = 7,
72         IB_SA_RATE_60_GBPS  = 8,
73         IB_SA_RATE_80_GBPS  = 9,
74         IB_SA_RATE_120_GBPS = 10
75 };
76
77 static inline int ib_sa_rate_enum_to_int(enum ib_sa_rate rate)
78 {
79         switch (rate) {
80         case IB_SA_RATE_2_5_GBPS: return  1;
81         case IB_SA_RATE_5_GBPS:   return  2;
82         case IB_SA_RATE_10_GBPS:  return  4;
83         case IB_SA_RATE_20_GBPS:  return  8;
84         case IB_SA_RATE_30_GBPS:  return 12;
85         case IB_SA_RATE_40_GBPS:  return 16;
86         case IB_SA_RATE_60_GBPS:  return 24;
87         case IB_SA_RATE_80_GBPS:  return 32;
88         case IB_SA_RATE_120_GBPS: return 48;
89         default:                  return -1;
90         }
91 }
92
93 /*
94  * Structures for SA records are named "struct ib_sa_xxx_rec."  No
95  * attempt is made to pack structures to match the physical layout of
96  * SA records in SA MADs; all packing and unpacking is handled by the
97  * SA query code.
98  *
99  * For a record with structure ib_sa_xxx_rec, the naming convention
100  * for the component mask value for field yyy is IB_SA_XXX_REC_YYY (we
101  * never use different abbreviations or otherwise change the spelling
102  * of xxx/yyy between ib_sa_xxx_rec.yyy and IB_SA_XXX_REC_YYY).
103  *
104  * Reserved rows are indicated with comments to help maintainability.
105  */
106
107 /* reserved:                                                             0 */
108 /* reserved:                                                             1 */
109 #define IB_SA_PATH_REC_DGID                             IB_SA_COMP_MASK( 2)
110 #define IB_SA_PATH_REC_SGID                             IB_SA_COMP_MASK( 3)
111 #define IB_SA_PATH_REC_DLID                             IB_SA_COMP_MASK( 4)
112 #define IB_SA_PATH_REC_SLID                             IB_SA_COMP_MASK( 5)
113 #define IB_SA_PATH_REC_RAW_TRAFFIC                      IB_SA_COMP_MASK( 6)
114 /* reserved:                                                             7 */
115 #define IB_SA_PATH_REC_FLOW_LABEL                       IB_SA_COMP_MASK( 8)
116 #define IB_SA_PATH_REC_HOP_LIMIT                        IB_SA_COMP_MASK( 9)
117 #define IB_SA_PATH_REC_TRAFFIC_CLASS                    IB_SA_COMP_MASK(10)
118 #define IB_SA_PATH_REC_REVERSIBLE                       IB_SA_COMP_MASK(11)
119 #define IB_SA_PATH_REC_NUMB_PATH                        IB_SA_COMP_MASK(12)
120 #define IB_SA_PATH_REC_PKEY                             IB_SA_COMP_MASK(13)
121 /* reserved:                                                            14 */
122 #define IB_SA_PATH_REC_SL                               IB_SA_COMP_MASK(15)
123 #define IB_SA_PATH_REC_MTU_SELECTOR                     IB_SA_COMP_MASK(16)
124 #define IB_SA_PATH_REC_MTU                              IB_SA_COMP_MASK(17)
125 #define IB_SA_PATH_REC_RATE_SELECTOR                    IB_SA_COMP_MASK(18)
126 #define IB_SA_PATH_REC_RATE                             IB_SA_COMP_MASK(19)
127 #define IB_SA_PATH_REC_PACKET_LIFE_TIME_SELECTOR        IB_SA_COMP_MASK(20)
128 #define IB_SA_PATH_REC_PACKET_LIFE_TIME                 IB_SA_COMP_MASK(21)
129 #define IB_SA_PATH_REC_PREFERENCE                       IB_SA_COMP_MASK(22)
130
131 struct ib_sa_path_rec {
132         /* reserved */
133         /* reserved */
134         union ib_gid dgid;
135         union ib_gid sgid;
136         u16          dlid;
137         u16          slid;
138         int          raw_traffic;
139         /* reserved */
140         u32          flow_label;
141         u8           hop_limit;
142         u8           traffic_class;
143         int          reversible;
144         u8           numb_path;
145         u16          pkey;
146         /* reserved */
147         u8           sl;
148         u8           mtu_selector;
149         u8           mtu;
150         u8           rate_selector;
151         u8           rate;
152         u8           packet_life_time_selector;
153         u8           packet_life_time;
154         u8           preference;
155 };
156
157 #define IB_SA_MCMEMBER_REC_MGID                         IB_SA_COMP_MASK( 0)
158 #define IB_SA_MCMEMBER_REC_PORT_GID                     IB_SA_COMP_MASK( 1)
159 #define IB_SA_MCMEMBER_REC_QKEY                         IB_SA_COMP_MASK( 2)
160 #define IB_SA_MCMEMBER_REC_MLID                         IB_SA_COMP_MASK( 3)
161 #define IB_SA_MCMEMBER_REC_MTU_SELECTOR                 IB_SA_COMP_MASK( 4)
162 #define IB_SA_MCMEMBER_REC_MTU                          IB_SA_COMP_MASK( 5)
163 #define IB_SA_MCMEMBER_REC_TRAFFIC_CLASS                IB_SA_COMP_MASK( 6)
164 #define IB_SA_MCMEMBER_REC_PKEY                         IB_SA_COMP_MASK( 7)
165 #define IB_SA_MCMEMBER_REC_RATE_SELECTOR                IB_SA_COMP_MASK( 8)
166 #define IB_SA_MCMEMBER_REC_RATE                         IB_SA_COMP_MASK( 9)
167 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR    IB_SA_COMP_MASK(10)
168 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME             IB_SA_COMP_MASK(11)
169 #define IB_SA_MCMEMBER_REC_SL                           IB_SA_COMP_MASK(12)
170 #define IB_SA_MCMEMBER_REC_FLOW_LABEL                   IB_SA_COMP_MASK(13)
171 #define IB_SA_MCMEMBER_REC_HOP_LIMIT                    IB_SA_COMP_MASK(14)
172 #define IB_SA_MCMEMBER_REC_SCOPE                        IB_SA_COMP_MASK(15)
173 #define IB_SA_MCMEMBER_REC_JOIN_STATE                   IB_SA_COMP_MASK(16)
174 #define IB_SA_MCMEMBER_REC_PROXY_JOIN                   IB_SA_COMP_MASK(17)
175
176 struct ib_sa_mcmember_rec {
177         union ib_gid mgid;
178         union ib_gid port_gid;
179         u32          qkey;
180         u16          mlid;
181         u8           mtu_selector;
182         u8           mtu;
183         u8           traffic_class;
184         u16          pkey;
185         u8           rate_selector;
186         u8           rate;
187         u8           packet_life_time_selector;
188         u8           packet_life_time;
189         u8           sl;
190         u32          flow_label;
191         u8           hop_limit;
192         u8           scope;
193         u8           join_state;
194         int          proxy_join;
195 };
196
197 /* Service Record Component Mask Sec 15.2.5.14 Ver 1.1  */
198 #define IB_SA_SERVICE_REC_SERVICE_ID                    IB_SA_COMP_MASK( 0)
199 #define IB_SA_SERVICE_REC_SERVICE_GID                   IB_SA_COMP_MASK( 1)
200 #define IB_SA_SERVICE_REC_SERVICE_PKEY                  IB_SA_COMP_MASK( 2)
201 /* reserved:                                                             3 */
202 #define IB_SA_SERVICE_REC_SERVICE_LEASE                 IB_SA_COMP_MASK( 4)
203 #define IB_SA_SERVICE_REC_SERVICE_KEY                   IB_SA_COMP_MASK( 5)
204 #define IB_SA_SERVICE_REC_SERVICE_NAME                  IB_SA_COMP_MASK( 6)
205 #define IB_SA_SERVICE_REC_SERVICE_DATA8_0               IB_SA_COMP_MASK( 7)
206 #define IB_SA_SERVICE_REC_SERVICE_DATA8_1               IB_SA_COMP_MASK( 8)
207 #define IB_SA_SERVICE_REC_SERVICE_DATA8_2               IB_SA_COMP_MASK( 9)
208 #define IB_SA_SERVICE_REC_SERVICE_DATA8_3               IB_SA_COMP_MASK(10)
209 #define IB_SA_SERVICE_REC_SERVICE_DATA8_4               IB_SA_COMP_MASK(11)
210 #define IB_SA_SERVICE_REC_SERVICE_DATA8_5               IB_SA_COMP_MASK(12)
211 #define IB_SA_SERVICE_REC_SERVICE_DATA8_6               IB_SA_COMP_MASK(13)
212 #define IB_SA_SERVICE_REC_SERVICE_DATA8_7               IB_SA_COMP_MASK(14)
213 #define IB_SA_SERVICE_REC_SERVICE_DATA8_8               IB_SA_COMP_MASK(15)
214 #define IB_SA_SERVICE_REC_SERVICE_DATA8_9               IB_SA_COMP_MASK(16)
215 #define IB_SA_SERVICE_REC_SERVICE_DATA8_10              IB_SA_COMP_MASK(17)
216 #define IB_SA_SERVICE_REC_SERVICE_DATA8_11              IB_SA_COMP_MASK(18)
217 #define IB_SA_SERVICE_REC_SERVICE_DATA8_12              IB_SA_COMP_MASK(19)
218 #define IB_SA_SERVICE_REC_SERVICE_DATA8_13              IB_SA_COMP_MASK(20)
219 #define IB_SA_SERVICE_REC_SERVICE_DATA8_14              IB_SA_COMP_MASK(21)
220 #define IB_SA_SERVICE_REC_SERVICE_DATA8_15              IB_SA_COMP_MASK(22)
221 #define IB_SA_SERVICE_REC_SERVICE_DATA16_0              IB_SA_COMP_MASK(23)
222 #define IB_SA_SERVICE_REC_SERVICE_DATA16_1              IB_SA_COMP_MASK(24)
223 #define IB_SA_SERVICE_REC_SERVICE_DATA16_2              IB_SA_COMP_MASK(25)
224 #define IB_SA_SERVICE_REC_SERVICE_DATA16_3              IB_SA_COMP_MASK(26)
225 #define IB_SA_SERVICE_REC_SERVICE_DATA16_4              IB_SA_COMP_MASK(27)
226 #define IB_SA_SERVICE_REC_SERVICE_DATA16_5              IB_SA_COMP_MASK(28)
227 #define IB_SA_SERVICE_REC_SERVICE_DATA16_6              IB_SA_COMP_MASK(29)
228 #define IB_SA_SERVICE_REC_SERVICE_DATA16_7              IB_SA_COMP_MASK(30)
229 #define IB_SA_SERVICE_REC_SERVICE_DATA32_0              IB_SA_COMP_MASK(31)
230 #define IB_SA_SERVICE_REC_SERVICE_DATA32_1              IB_SA_COMP_MASK(32)
231 #define IB_SA_SERVICE_REC_SERVICE_DATA32_2              IB_SA_COMP_MASK(33)
232 #define IB_SA_SERVICE_REC_SERVICE_DATA32_3              IB_SA_COMP_MASK(34)
233 #define IB_SA_SERVICE_REC_SERVICE_DATA64_0              IB_SA_COMP_MASK(35)
234 #define IB_SA_SERVICE_REC_SERVICE_DATA64_1              IB_SA_COMP_MASK(36)
235
236 #define IB_DEFAULT_SERVICE_LEASE        0xFFFFFFFF
237
238 struct ib_sa_service_rec {
239         u64             id;
240         union ib_gid    gid;
241         u16             pkey;
242         /* reserved */
243         u32             lease;
244         u8              key[16];
245         u8              name[64];
246         u8              data8[16];
247         u16             data16[8];
248         u32             data32[4];
249         u64             data64[2];
250 };
251
252 struct ib_sa_query;
253
254 void ib_sa_cancel_query(int id, struct ib_sa_query *query);
255
256 int ib_sa_path_rec_get(struct ib_device *device, u8 port_num,
257                        struct ib_sa_path_rec *rec,
258                        ib_sa_comp_mask comp_mask,
259                        int timeout_ms, unsigned int __nocast gfp_mask,
260                        void (*callback)(int status,
261                                         struct ib_sa_path_rec *resp,
262                                         void *context),
263                        void *context,
264                        struct ib_sa_query **query);
265
266 int ib_sa_mcmember_rec_query(struct ib_device *device, u8 port_num,
267                              u8 method,
268                              struct ib_sa_mcmember_rec *rec,
269                              ib_sa_comp_mask comp_mask,
270                              int timeout_ms, unsigned int __nocast gfp_mask,
271                              void (*callback)(int status,
272                                               struct ib_sa_mcmember_rec *resp,
273                                               void *context),
274                              void *context,
275                              struct ib_sa_query **query);
276
277 int ib_sa_service_rec_query(struct ib_device *device, u8 port_num,
278                          u8 method,
279                          struct ib_sa_service_rec *rec,
280                          ib_sa_comp_mask comp_mask,
281                          int timeout_ms, unsigned int __nocast gfp_mask,
282                          void (*callback)(int status,
283                                           struct ib_sa_service_rec *resp,
284                                           void *context),
285                          void *context,
286                          struct ib_sa_query **sa_query);
287
288 /**
289  * ib_sa_mcmember_rec_set - Start an MCMember set query
290  * @device:device to send query on
291  * @port_num: port number to send query on
292  * @rec:MCMember Record to send in query
293  * @comp_mask:component mask to send in query
294  * @timeout_ms:time to wait for response
295  * @gfp_mask:GFP mask to use for internal allocations
296  * @callback:function called when query completes, times out or is
297  * canceled
298  * @context:opaque user context passed to callback
299  * @sa_query:query context, used to cancel query
300  *
301  * Send an MCMember Set query to the SA (eg to join a multicast
302  * group).  The callback function will be called when the query
303  * completes (or fails); status is 0 for a successful response, -EINTR
304  * if the query is canceled, -ETIMEDOUT is the query timed out, or
305  * -EIO if an error occurred sending the query.  The resp parameter of
306  * the callback is only valid if status is 0.
307  *
308  * If the return value of ib_sa_mcmember_rec_set() is negative, it is
309  * an error code.  Otherwise it is a query ID that can be used to
310  * cancel the query.
311  */
312 static inline int
313 ib_sa_mcmember_rec_set(struct ib_device *device, u8 port_num,
314                        struct ib_sa_mcmember_rec *rec,
315                        ib_sa_comp_mask comp_mask,
316                        int timeout_ms, unsigned int __nocast gfp_mask,
317                        void (*callback)(int status,
318                                         struct ib_sa_mcmember_rec *resp,
319                                         void *context),
320                        void *context,
321                        struct ib_sa_query **query)
322 {
323         return ib_sa_mcmember_rec_query(device, port_num,
324                                         IB_MGMT_METHOD_SET,
325                                         rec, comp_mask,
326                                         timeout_ms, gfp_mask, callback,
327                                         context, query);
328 }
329
330 /**
331  * ib_sa_mcmember_rec_delete - Start an MCMember delete query
332  * @device:device to send query on
333  * @port_num: port number to send query on
334  * @rec:MCMember Record to send in query
335  * @comp_mask:component mask to send in query
336  * @timeout_ms:time to wait for response
337  * @gfp_mask:GFP mask to use for internal allocations
338  * @callback:function called when query completes, times out or is
339  * canceled
340  * @context:opaque user context passed to callback
341  * @sa_query:query context, used to cancel query
342  *
343  * Send an MCMember Delete query to the SA (eg to leave a multicast
344  * group).  The callback function will be called when the query
345  * completes (or fails); status is 0 for a successful response, -EINTR
346  * if the query is canceled, -ETIMEDOUT is the query timed out, or
347  * -EIO if an error occurred sending the query.  The resp parameter of
348  * the callback is only valid if status is 0.
349  *
350  * If the return value of ib_sa_mcmember_rec_delete() is negative, it
351  * is an error code.  Otherwise it is a query ID that can be used to
352  * cancel the query.
353  */
354 static inline int
355 ib_sa_mcmember_rec_delete(struct ib_device *device, u8 port_num,
356                           struct ib_sa_mcmember_rec *rec,
357                           ib_sa_comp_mask comp_mask,
358                           int timeout_ms, unsigned int __nocast gfp_mask,
359                           void (*callback)(int status,
360                                            struct ib_sa_mcmember_rec *resp,
361                                            void *context),
362                           void *context,
363                           struct ib_sa_query **query)
364 {
365         return ib_sa_mcmember_rec_query(device, port_num,
366                                         IB_SA_METHOD_DELETE,
367                                         rec, comp_mask,
368                                         timeout_ms, gfp_mask, callback,
369                                         context, query);
370 }
371
372
373 #endif /* IB_SA_H */