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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  * $Id: ib_sa.h 2811 2005-07-06 18:11:43Z halr $
  35  */
  36
  37 #ifndef IB_SA_H
  38 #define IB_SA_H
  39
  40 #include <linux/completion.h>
  41 #include <linux/compiler.h>
  42
  43 #include <asm/atomic.h>
  44
  45 #include <rdma/ib_verbs.h>
  46 #include <rdma/ib_mad.h>
  47
  48 enum {
  49         IB_SA_CLASS_VERSION             = 2,    /* IB spec version 1.1/1.2 */
  50
  51         IB_SA_METHOD_GET_TABLE          = 0x12,
  52         IB_SA_METHOD_GET_TABLE_RESP     = 0x92,
  53         IB_SA_METHOD_DELETE             = 0x15,
  54         IB_SA_METHOD_DELETE_RESP        = 0x95,
  55         IB_SA_METHOD_GET_MULTI          = 0x14,
  56         IB_SA_METHOD_GET_MULTI_RESP     = 0x94,
  57         IB_SA_METHOD_GET_TRACE_TBL      = 0x13
  58 };
  59
  60 enum {
  61         IB_SA_ATTR_CLASS_PORTINFO    = 0x01,
  62         IB_SA_ATTR_NOTICE            = 0x02,
  63         IB_SA_ATTR_INFORM_INFO       = 0x03,
  64         IB_SA_ATTR_NODE_REC          = 0x11,
  65         IB_SA_ATTR_PORT_INFO_REC     = 0x12,
  66         IB_SA_ATTR_SL2VL_REC         = 0x13,
  67         IB_SA_ATTR_SWITCH_REC        = 0x14,
  68         IB_SA_ATTR_LINEAR_FDB_REC    = 0x15,
  69         IB_SA_ATTR_RANDOM_FDB_REC    = 0x16,
  70         IB_SA_ATTR_MCAST_FDB_REC     = 0x17,
  71         IB_SA_ATTR_SM_INFO_REC       = 0x18,
  72         IB_SA_ATTR_LINK_REC          = 0x20,
  73         IB_SA_ATTR_GUID_INFO_REC     = 0x30,
  74         IB_SA_ATTR_SERVICE_REC       = 0x31,
  75         IB_SA_ATTR_PARTITION_REC     = 0x33,
  76         IB_SA_ATTR_PATH_REC          = 0x35,
  77         IB_SA_ATTR_VL_ARB_REC        = 0x36,
  78         IB_SA_ATTR_MC_MEMBER_REC     = 0x38,
  79         IB_SA_ATTR_TRACE_REC         = 0x39,
  80         IB_SA_ATTR_MULTI_PATH_REC    = 0x3a,
  81         IB_SA_ATTR_SERVICE_ASSOC_REC = 0x3b,
  82         IB_SA_ATTR_INFORM_INFO_REC   = 0xf3
  83 };
  84
  85 enum ib_sa_selector {
  86         IB_SA_GT   = 0,
  87         IB_SA_LT   = 1,
  88         IB_SA_EQ   = 2,
  89         /*
  90          * The meaning of "best" depends on the attribute: for
  91          * example, for MTU best will return the largest available
  92          * MTU, while for packet life time, best will return the
  93          * smallest available life time.
  94          */
  95         IB_SA_BEST = 3
  96 };
  97
  98 /*
  99  * Structures for SA records are named "struct ib_sa_xxx_rec."  No
 100  * attempt is made to pack structures to match the physical layout of
 101  * SA records in SA MADs; all packing and unpacking is handled by the
 102  * SA query code.
 103  *
 104  * For a record with structure ib_sa_xxx_rec, the naming convention
 105  * for the component mask value for field yyy is IB_SA_XXX_REC_YYY (we
 106  * never use different abbreviations or otherwise change the spelling
 107  * of xxx/yyy between ib_sa_xxx_rec.yyy and IB_SA_XXX_REC_YYY).
 108  *
 109  * Reserved rows are indicated with comments to help maintainability.
 110  */
 111
 112 /* reserved:                                                             0 */
 113 /* reserved:                                                             1 */
 114 #define IB_SA_PATH_REC_DGID                             IB_SA_COMP_MASK( 2)
 115 #define IB_SA_PATH_REC_SGID                             IB_SA_COMP_MASK( 3)
 116 #define IB_SA_PATH_REC_DLID                             IB_SA_COMP_MASK( 4)
 117 #define IB_SA_PATH_REC_SLID                             IB_SA_COMP_MASK( 5)
 118 #define IB_SA_PATH_REC_RAW_TRAFFIC                      IB_SA_COMP_MASK( 6)
 119 /* reserved:                                                             7 */
 120 #define IB_SA_PATH_REC_FLOW_LABEL                       IB_SA_COMP_MASK( 8)
 121 #define IB_SA_PATH_REC_HOP_LIMIT                        IB_SA_COMP_MASK( 9)
 122 #define IB_SA_PATH_REC_TRAFFIC_CLASS                    IB_SA_COMP_MASK(10)
 123 #define IB_SA_PATH_REC_REVERSIBLE                       IB_SA_COMP_MASK(11)
 124 #define IB_SA_PATH_REC_NUMB_PATH                        IB_SA_COMP_MASK(12)
 125 #define IB_SA_PATH_REC_PKEY                             IB_SA_COMP_MASK(13)
 126 /* reserved:                                                            14 */
 127 #define IB_SA_PATH_REC_SL                               IB_SA_COMP_MASK(15)
 128 #define IB_SA_PATH_REC_MTU_SELECTOR                     IB_SA_COMP_MASK(16)
 129 #define IB_SA_PATH_REC_MTU                              IB_SA_COMP_MASK(17)
 130 #define IB_SA_PATH_REC_RATE_SELECTOR                    IB_SA_COMP_MASK(18)
 131 #define IB_SA_PATH_REC_RATE                             IB_SA_COMP_MASK(19)
 132 #define IB_SA_PATH_REC_PACKET_LIFE_TIME_SELECTOR        IB_SA_COMP_MASK(20)
 133 #define IB_SA_PATH_REC_PACKET_LIFE_TIME                 IB_SA_COMP_MASK(21)
 134 #define IB_SA_PATH_REC_PREFERENCE                       IB_SA_COMP_MASK(22)
 135
 136 struct ib_sa_path_rec {
 137         /* reserved */
 138         /* reserved */
 139         union ib_gid dgid;
 140         union ib_gid sgid;
 141         __be16       dlid;
 142         __be16       slid;
 143         int          raw_traffic;
 144         /* reserved */
 145         __be32       flow_label;
 146         u8           hop_limit;
 147         u8           traffic_class;
 148         int          reversible;
 149         u8           numb_path;
 150         __be16       pkey;
 151         /* reserved */
 152         u8           sl;
 153         u8           mtu_selector;
 154         u8           mtu;
 155         u8           rate_selector;
 156         u8           rate;
 157         u8           packet_life_time_selector;
 158         u8           packet_life_time;
 159         u8           preference;
 160 };
 161
 162 #define IB_SA_MCMEMBER_REC_MGID                         IB_SA_COMP_MASK( 0)
 163 #define IB_SA_MCMEMBER_REC_PORT_GID                     IB_SA_COMP_MASK( 1)
 164 #define IB_SA_MCMEMBER_REC_QKEY                         IB_SA_COMP_MASK( 2)
 165 #define IB_SA_MCMEMBER_REC_MLID                         IB_SA_COMP_MASK( 3)
 166 #define IB_SA_MCMEMBER_REC_MTU_SELECTOR                 IB_SA_COMP_MASK( 4)
 167 #define IB_SA_MCMEMBER_REC_MTU                          IB_SA_COMP_MASK( 5)
 168 #define IB_SA_MCMEMBER_REC_TRAFFIC_CLASS                IB_SA_COMP_MASK( 6)
 169 #define IB_SA_MCMEMBER_REC_PKEY                         IB_SA_COMP_MASK( 7)
 170 #define IB_SA_MCMEMBER_REC_RATE_SELECTOR                IB_SA_COMP_MASK( 8)
 171 #define IB_SA_MCMEMBER_REC_RATE                         IB_SA_COMP_MASK( 9)
 172 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR    IB_SA_COMP_MASK(10)
 173 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME             IB_SA_COMP_MASK(11)
 174 #define IB_SA_MCMEMBER_REC_SL                           IB_SA_COMP_MASK(12)
 175 #define IB_SA_MCMEMBER_REC_FLOW_LABEL                   IB_SA_COMP_MASK(13)
 176 #define IB_SA_MCMEMBER_REC_HOP_LIMIT                    IB_SA_COMP_MASK(14)
 177 #define IB_SA_MCMEMBER_REC_SCOPE                        IB_SA_COMP_MASK(15)
 178 #define IB_SA_MCMEMBER_REC_JOIN_STATE                   IB_SA_COMP_MASK(16)
 179 #define IB_SA_MCMEMBER_REC_PROXY_JOIN                   IB_SA_COMP_MASK(17)
 180
 181 struct ib_sa_mcmember_rec {
 182         union ib_gid mgid;
 183         union ib_gid port_gid;
 184         __be32       qkey;
 185         __be16       mlid;
 186         u8           mtu_selector;
 187         u8           mtu;
 188         u8           traffic_class;
 189         __be16       pkey;
 190         u8           rate_selector;
 191         u8           rate;
 192         u8           packet_life_time_selector;
 193         u8           packet_life_time;
 194         u8           sl;
 195         __be32       flow_label;
 196         u8           hop_limit;
 197         u8           scope;
 198         u8           join_state;
 199         int          proxy_join;
 200 };
 201
 202 /* Service Record Component Mask Sec 15.2.5.14 Ver 1.1  */
 203 #define IB_SA_SERVICE_REC_SERVICE_ID                    IB_SA_COMP_MASK( 0)
 204 #define IB_SA_SERVICE_REC_SERVICE_GID                   IB_SA_COMP_MASK( 1)
 205 #define IB_SA_SERVICE_REC_SERVICE_PKEY                  IB_SA_COMP_MASK( 2)
 206 /* reserved:                                                             3 */
 207 #define IB_SA_SERVICE_REC_SERVICE_LEASE                 IB_SA_COMP_MASK( 4)
 208 #define IB_SA_SERVICE_REC_SERVICE_KEY                   IB_SA_COMP_MASK( 5)
 209 #define IB_SA_SERVICE_REC_SERVICE_NAME                  IB_SA_COMP_MASK( 6)
 210 #define IB_SA_SERVICE_REC_SERVICE_DATA8_0               IB_SA_COMP_MASK( 7)
 211 #define IB_SA_SERVICE_REC_SERVICE_DATA8_1               IB_SA_COMP_MASK( 8)
 212 #define IB_SA_SERVICE_REC_SERVICE_DATA8_2               IB_SA_COMP_MASK( 9)
 213 #define IB_SA_SERVICE_REC_SERVICE_DATA8_3               IB_SA_COMP_MASK(10)
 214 #define IB_SA_SERVICE_REC_SERVICE_DATA8_4               IB_SA_COMP_MASK(11)
 215 #define IB_SA_SERVICE_REC_SERVICE_DATA8_5               IB_SA_COMP_MASK(12)
 216 #define IB_SA_SERVICE_REC_SERVICE_DATA8_6               IB_SA_COMP_MASK(13)
 217 #define IB_SA_SERVICE_REC_SERVICE_DATA8_7               IB_SA_COMP_MASK(14)
 218 #define IB_SA_SERVICE_REC_SERVICE_DATA8_8               IB_SA_COMP_MASK(15)
 219 #define IB_SA_SERVICE_REC_SERVICE_DATA8_9               IB_SA_COMP_MASK(16)
 220 #define IB_SA_SERVICE_REC_SERVICE_DATA8_10              IB_SA_COMP_MASK(17)
 221 #define IB_SA_SERVICE_REC_SERVICE_DATA8_11              IB_SA_COMP_MASK(18)
 222 #define IB_SA_SERVICE_REC_SERVICE_DATA8_12              IB_SA_COMP_MASK(19)
 223 #define IB_SA_SERVICE_REC_SERVICE_DATA8_13              IB_SA_COMP_MASK(20)
 224 #define IB_SA_SERVICE_REC_SERVICE_DATA8_14              IB_SA_COMP_MASK(21)
 225 #define IB_SA_SERVICE_REC_SERVICE_DATA8_15              IB_SA_COMP_MASK(22)
 226 #define IB_SA_SERVICE_REC_SERVICE_DATA16_0              IB_SA_COMP_MASK(23)
 227 #define IB_SA_SERVICE_REC_SERVICE_DATA16_1              IB_SA_COMP_MASK(24)
 228 #define IB_SA_SERVICE_REC_SERVICE_DATA16_2              IB_SA_COMP_MASK(25)
 229 #define IB_SA_SERVICE_REC_SERVICE_DATA16_3              IB_SA_COMP_MASK(26)
 230 #define IB_SA_SERVICE_REC_SERVICE_DATA16_4              IB_SA_COMP_MASK(27)
 231 #define IB_SA_SERVICE_REC_SERVICE_DATA16_5              IB_SA_COMP_MASK(28)
 232 #define IB_SA_SERVICE_REC_SERVICE_DATA16_6              IB_SA_COMP_MASK(29)
 233 #define IB_SA_SERVICE_REC_SERVICE_DATA16_7              IB_SA_COMP_MASK(30)
 234 #define IB_SA_SERVICE_REC_SERVICE_DATA32_0              IB_SA_COMP_MASK(31)
 235 #define IB_SA_SERVICE_REC_SERVICE_DATA32_1              IB_SA_COMP_MASK(32)
 236 #define IB_SA_SERVICE_REC_SERVICE_DATA32_2              IB_SA_COMP_MASK(33)
 237 #define IB_SA_SERVICE_REC_SERVICE_DATA32_3              IB_SA_COMP_MASK(34)
 238 #define IB_SA_SERVICE_REC_SERVICE_DATA64_0              IB_SA_COMP_MASK(35)
 239 #define IB_SA_SERVICE_REC_SERVICE_DATA64_1              IB_SA_COMP_MASK(36)
 240
 241 #define IB_DEFAULT_SERVICE_LEASE        0xFFFFFFFF
 242
 243 struct ib_sa_service_rec {
 244         u64             id;
 245         union ib_gid    gid;
 246         __be16          pkey;
 247         /* reserved */
 248         u32             lease;
 249         u8              key[16];
 250         u8              name[64];
 251         u8              data8[16];
 252         u16             data16[8];
 253         u32             data32[4];
 254         u64             data64[2];
 255 };
 256
 257 struct ib_sa_client {
 258         atomic_t users;
 259         struct completion comp;
 260 };
 261
 262 /**
 263  * ib_sa_register_client - Register an SA client.
 264  */
 265 void ib_sa_register_client(struct ib_sa_client *client);
 266
 267 /**
 268  * ib_sa_unregister_client - Deregister an SA client.
 269  * @client: Client object to deregister.
 270  */
 271 void ib_sa_unregister_client(struct ib_sa_client *client);
 272
 273 struct ib_sa_query;
 274
 275 void ib_sa_cancel_query(int id, struct ib_sa_query *query);
 276
 277 int ib_sa_path_rec_get(struct ib_sa_client *client,
 278                        struct ib_device *device, u8 port_num,
 279                        struct ib_sa_path_rec *rec,
 280                        ib_sa_comp_mask comp_mask,
 281                        int timeout_ms, gfp_t gfp_mask,
 282                        void (*callback)(int status,
 283                                         struct ib_sa_path_rec *resp,
 284                                         void *context),
 285                        void *context,
 286                        struct ib_sa_query **query);
 287
 288 int ib_sa_mcmember_rec_query(struct ib_sa_client *client,
 289                              struct ib_device *device, u8 port_num,
 290                              u8 method,
 291                              struct ib_sa_mcmember_rec *rec,
 292                              ib_sa_comp_mask comp_mask,
 293                              int timeout_ms, gfp_t gfp_mask,
 294                              void (*callback)(int status,
 295                                               struct ib_sa_mcmember_rec *resp,
 296                                               void *context),
 297                              void *context,
 298                              struct ib_sa_query **query);
 299
 300 int ib_sa_service_rec_query(struct ib_sa_client *client,
 301                          struct ib_device *device, u8 port_num,
 302                          u8 method,
 303                          struct ib_sa_service_rec *rec,
 304                          ib_sa_comp_mask comp_mask,
 305                          int timeout_ms, gfp_t gfp_mask,
 306                          void (*callback)(int status,
 307                                           struct ib_sa_service_rec *resp,
 308                                           void *context),
 309                          void *context,
 310                          struct ib_sa_query **sa_query);
 311
 312 /**
 313  * ib_sa_mcmember_rec_set - Start an MCMember set query
 314  * @client:SA client
 315  * @device:device to send query on
 316  * @port_num: port number to send query on
 317  * @rec:MCMember Record to send in query
 318  * @comp_mask:component mask to send in query
 319  * @timeout_ms:time to wait for response
 320  * @gfp_mask:GFP mask to use for internal allocations
 321  * @callback:function called when query completes, times out or is
 322  * canceled
 323  * @context:opaque user context passed to callback
 324  * @sa_query:query context, used to cancel query
 325  *
 326  * Send an MCMember Set query to the SA (eg to join a multicast
 327  * group).  The callback function will be called when the query
 328  * completes (or fails); status is 0 for a successful response, -EINTR
 329  * if the query is canceled, -ETIMEDOUT is the query timed out, or
 330  * -EIO if an error occurred sending the query.  The resp parameter of
 331  * the callback is only valid if status is 0.
 332  *
 333  * If the return value of ib_sa_mcmember_rec_set() is negative, it is
 334  * an error code.  Otherwise it is a query ID that can be used to
 335  * cancel the query.
 336  */
 337 static inline int
 338 ib_sa_mcmember_rec_set(struct ib_sa_client *client,
 339                        struct ib_device *device, u8 port_num,
 340                        struct ib_sa_mcmember_rec *rec,
 341                        ib_sa_comp_mask comp_mask,
 342                        int timeout_ms, gfp_t gfp_mask,
 343                        void (*callback)(int status,
 344                                         struct ib_sa_mcmember_rec *resp,
 345                                         void *context),
 346                        void *context,
 347                        struct ib_sa_query **query)
 348 {
 349         return ib_sa_mcmember_rec_query(client, device, port_num,
 350                                         IB_MGMT_METHOD_SET,
 351                                         rec, comp_mask,
 352                                         timeout_ms, gfp_mask, callback,
 353                                         context, query);
 354 }
 355
 356 /**
 357  * ib_sa_mcmember_rec_delete - Start an MCMember delete query
 358  * @client:SA client
 359  * @device:device to send query on
 360  * @port_num: port number to send query on
 361  * @rec:MCMember Record to send in query
 362  * @comp_mask:component mask to send in query
 363  * @timeout_ms:time to wait for response
 364  * @gfp_mask:GFP mask to use for internal allocations
 365  * @callback:function called when query completes, times out or is
 366  * canceled
 367  * @context:opaque user context passed to callback
 368  * @sa_query:query context, used to cancel query
 369  *
 370  * Send an MCMember Delete query to the SA (eg to leave a multicast
 371  * group).  The callback function will be called when the query
 372  * completes (or fails); status is 0 for a successful response, -EINTR
 373  * if the query is canceled, -ETIMEDOUT is the query timed out, or
 374  * -EIO if an error occurred sending the query.  The resp parameter of
 375  * the callback is only valid if status is 0.
 376  *
 377  * If the return value of ib_sa_mcmember_rec_delete() is negative, it
 378  * is an error code.  Otherwise it is a query ID that can be used to
 379  * cancel the query.
 380  */
 381 static inline int
 382 ib_sa_mcmember_rec_delete(struct ib_sa_client *client,
 383                           struct ib_device *device, u8 port_num,
 384                           struct ib_sa_mcmember_rec *rec,
 385                           ib_sa_comp_mask comp_mask,
 386                           int timeout_ms, gfp_t gfp_mask,
 387                           void (*callback)(int status,
 388                                            struct ib_sa_mcmember_rec *resp,
 389                                            void *context),
 390                           void *context,
 391                           struct ib_sa_query **query)
 392 {
 393         return ib_sa_mcmember_rec_query(client, device, port_num,
 394                                         IB_SA_METHOD_DELETE,
 395                                         rec, comp_mask,
 396                                         timeout_ms, gfp_mask, callback,
 397                                         context, query);
 398 }
 399
 400 /**
 401  * ib_init_ah_from_path - Initialize address handle attributes based on an SA
 402  *   path record.
 403  */
 404 int ib_init_ah_from_path(struct ib_device *device, u8 port_num,
 405                          struct ib_sa_path_rec *rec,
 406                          struct ib_ah_attr *ah_attr);
 407
 408 #endif /* IB_SA_H */