drivers/infiniband/include/ib_sa.h

   1 /*
   2  * Copyright (c) 2004 Topspin Communications.  All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  * $Id: ib_sa.h 1389 2004-12-27 22:56:47Z roland $
  33  */
  34
  35 #ifndef IB_SA_H
  36 #define IB_SA_H
  37
  38 #include <linux/compiler.h>
  39
  40 #include <ib_verbs.h>
  41 #include <ib_mad.h>
  42
  43 enum {
  44         IB_SA_CLASS_VERSION     = 2,    /* IB spec version 1.1/1.2 */
  45
  46         IB_SA_METHOD_DELETE     = 0x15
  47 };
  48
  49 enum ib_sa_selector {
  50         IB_SA_GTE  = 0,
  51         IB_SA_LTE  = 1,
  52         IB_SA_EQ   = 2,
  53         /*
  54          * The meaning of "best" depends on the attribute: for
  55          * example, for MTU best will return the largest available
  56          * MTU, while for packet life time, best will return the
  57          * smallest available life time.
  58          */
  59         IB_SA_BEST = 3
  60 };
  61
  62 enum ib_sa_rate {
  63         IB_SA_RATE_2_5_GBPS = 2,
  64         IB_SA_RATE_5_GBPS   = 5,
  65         IB_SA_RATE_10_GBPS  = 3,
  66         IB_SA_RATE_20_GBPS  = 6,
  67         IB_SA_RATE_30_GBPS  = 4,
  68         IB_SA_RATE_40_GBPS  = 7,
  69         IB_SA_RATE_60_GBPS  = 8,
  70         IB_SA_RATE_80_GBPS  = 9,
  71         IB_SA_RATE_120_GBPS = 10
  72 };
  73
  74 static inline int ib_sa_rate_enum_to_int(enum ib_sa_rate rate)
  75 {
  76         switch (rate) {
  77         case IB_SA_RATE_2_5_GBPS: return  1;
  78         case IB_SA_RATE_5_GBPS:   return  2;
  79         case IB_SA_RATE_10_GBPS:  return  4;
  80         case IB_SA_RATE_20_GBPS:  return  8;
  81         case IB_SA_RATE_30_GBPS:  return 12;
  82         case IB_SA_RATE_40_GBPS:  return 16;
  83         case IB_SA_RATE_60_GBPS:  return 24;
  84         case IB_SA_RATE_80_GBPS:  return 32;
  85         case IB_SA_RATE_120_GBPS: return 48;
  86         default:                  return -1;
  87         }
  88 }
  89
  90 typedef u64 __bitwise ib_sa_comp_mask;
  91
  92 #define IB_SA_COMP_MASK(n)      ((__force ib_sa_comp_mask) cpu_to_be64(1ull << n))
  93
  94 /*
  95  * Structures for SA records are named "struct ib_sa_xxx_rec."  No
  96  * attempt is made to pack structures to match the physical layout of
  97  * SA records in SA MADs; all packing and unpacking is handled by the
  98  * SA query code.
  99  *
 100  * For a record with structure ib_sa_xxx_rec, the naming convention
 101  * for the component mask value for field yyy is IB_SA_XXX_REC_YYY (we
 102  * never use different abbreviations or otherwise change the spelling
 103  * of xxx/yyy between ib_sa_xxx_rec.yyy and IB_SA_XXX_REC_YYY).
 104  *
 105  * Reserved rows are indicated with comments to help maintainability.
 106  */
 107
 108 /* reserved:                                                             0 */
 109 /* reserved:                                                             1 */
 110 #define IB_SA_PATH_REC_DGID                             IB_SA_COMP_MASK( 2)
 111 #define IB_SA_PATH_REC_SGID                             IB_SA_COMP_MASK( 3)
 112 #define IB_SA_PATH_REC_DLID                             IB_SA_COMP_MASK( 4)
 113 #define IB_SA_PATH_REC_SLID                             IB_SA_COMP_MASK( 5)
 114 #define IB_SA_PATH_REC_RAW_TRAFFIC                      IB_SA_COMP_MASK( 6)
 115 /* reserved:                                                             7 */
 116 #define IB_SA_PATH_REC_FLOW_LABEL                       IB_SA_COMP_MASK( 8)
 117 #define IB_SA_PATH_REC_HOP_LIMIT                        IB_SA_COMP_MASK( 9)
 118 #define IB_SA_PATH_REC_TRAFFIC_CLASS                    IB_SA_COMP_MASK(10)
 119 #define IB_SA_PATH_REC_REVERSIBLE                       IB_SA_COMP_MASK(11)
 120 #define IB_SA_PATH_REC_NUMB_PATH                        IB_SA_COMP_MASK(12)
 121 #define IB_SA_PATH_REC_PKEY                             IB_SA_COMP_MASK(13)
 122 /* reserved:                                                            14 */
 123 #define IB_SA_PATH_REC_SL                               IB_SA_COMP_MASK(15)
 124 #define IB_SA_PATH_REC_MTU_SELECTOR                     IB_SA_COMP_MASK(16)
 125 #define IB_SA_PATH_REC_MTU                              IB_SA_COMP_MASK(17)
 126 #define IB_SA_PATH_REC_RATE_SELECTOR                    IB_SA_COMP_MASK(18)
 127 #define IB_SA_PATH_REC_RATE                             IB_SA_COMP_MASK(19)
 128 #define IB_SA_PATH_REC_PACKET_LIFE_TIME_SELECTOR        IB_SA_COMP_MASK(20)
 129 #define IB_SA_PATH_REC_PACKET_LIFE_TIME                 IB_SA_COMP_MASK(21)
 130 #define IB_SA_PATH_REC_PREFERENCE                       IB_SA_COMP_MASK(22)
 131
 132 struct ib_sa_path_rec {
 133         /* reserved */
 134         /* reserved */
 135         union ib_gid dgid;
 136         union ib_gid sgid;
 137         u16          dlid;
 138         u16          slid;
 139         int          raw_traffic;
 140         /* reserved */
 141         u32          flow_label;
 142         u8           hop_limit;
 143         u8           traffic_class;
 144         int          reversible;
 145         u8           numb_path;
 146         u16          pkey;
 147         /* reserved */
 148         u8           sl;
 149         u8           mtu_selector;
 150         enum ib_mtu  mtu;
 151         u8           rate_selector;
 152         u8           rate;
 153         u8           packet_life_time_selector;
 154         u8           packet_life_time;
 155         u8           preference;
 156 };
 157
 158 #define IB_SA_MCMEMBER_REC_MGID                         IB_SA_COMP_MASK( 0)
 159 #define IB_SA_MCMEMBER_REC_PORT_GID                     IB_SA_COMP_MASK( 1)
 160 #define IB_SA_MCMEMBER_REC_QKEY                         IB_SA_COMP_MASK( 2)
 161 #define IB_SA_MCMEMBER_REC_MLID                         IB_SA_COMP_MASK( 3)
 162 #define IB_SA_MCMEMBER_REC_MTU_SELECTOR                 IB_SA_COMP_MASK( 4)
 163 #define IB_SA_MCMEMBER_REC_MTU                          IB_SA_COMP_MASK( 5)
 164 #define IB_SA_MCMEMBER_REC_TRAFFIC_CLASS                IB_SA_COMP_MASK( 6)
 165 #define IB_SA_MCMEMBER_REC_PKEY                         IB_SA_COMP_MASK( 7)
 166 #define IB_SA_MCMEMBER_REC_RATE_SELECTOR                IB_SA_COMP_MASK( 8)
 167 #define IB_SA_MCMEMBER_REC_RATE                         IB_SA_COMP_MASK( 9)
 168 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR    IB_SA_COMP_MASK(10)
 169 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME             IB_SA_COMP_MASK(11)
 170 #define IB_SA_MCMEMBER_REC_SL                           IB_SA_COMP_MASK(12)
 171 #define IB_SA_MCMEMBER_REC_FLOW_LABEL                   IB_SA_COMP_MASK(13)
 172 #define IB_SA_MCMEMBER_REC_HOP_LIMIT                    IB_SA_COMP_MASK(14)
 173 #define IB_SA_MCMEMBER_REC_SCOPE                        IB_SA_COMP_MASK(15)
 174 #define IB_SA_MCMEMBER_REC_JOIN_STATE                   IB_SA_COMP_MASK(16)
 175 #define IB_SA_MCMEMBER_REC_PROXY_JOIN                   IB_SA_COMP_MASK(17)
 176
 177 struct ib_sa_mcmember_rec {
 178         union ib_gid mgid;
 179         union ib_gid port_gid;
 180         u32          qkey;
 181         u16          mlid;
 182         u8           mtu_selector;
 183         enum         ib_mtu mtu;
 184         u8           traffic_class;
 185         u16          pkey;
 186         u8           rate_selector;
 187         u8           rate;
 188         u8           packet_life_time_selector;
 189         u8           packet_life_time;
 190         u8           sl;
 191         u32          flow_label;
 192         u8           hop_limit;
 193         u8           scope;
 194         u8           join_state;
 195         int          proxy_join;
 196 };
 197
 198 struct ib_sa_query;
 199
 200 void ib_sa_cancel_query(int id, struct ib_sa_query *query);
 201
 202 int ib_sa_path_rec_get(struct ib_device *device, u8 port_num,
 203                        struct ib_sa_path_rec *rec,
 204                        ib_sa_comp_mask comp_mask,
 205                        int timeout_ms, int gfp_mask,
 206                        void (*callback)(int status,
 207                                         struct ib_sa_path_rec *resp,
 208                                         void *context),
 209                        void *context,
 210                        struct ib_sa_query **query);
 211
 212 int ib_sa_mcmember_rec_query(struct ib_device *device, u8 port_num,
 213                              u8 method,
 214                              struct ib_sa_mcmember_rec *rec,
 215                              ib_sa_comp_mask comp_mask,
 216                              int timeout_ms, int gfp_mask,
 217                              void (*callback)(int status,
 218                                               struct ib_sa_mcmember_rec *resp,
 219                                               void *context),
 220                              void *context,
 221                              struct ib_sa_query **query);
 222
 223 /**
 224  * ib_sa_mcmember_rec_set - Start an MCMember set query
 225  * @device:device to send query on
 226  * @port_num: port number to send query on
 227  * @rec:MCMember Record to send in query
 228  * @comp_mask:component mask to send in query
 229  * @timeout_ms:time to wait for response
 230  * @gfp_mask:GFP mask to use for internal allocations
 231  * @callback:function called when query completes, times out or is
 232  * canceled
 233  * @context:opaque user context passed to callback
 234  * @sa_query:query context, used to cancel query
 235  *
 236  * Send an MCMember Set query to the SA (eg to join a multicast
 237  * group).  The callback function will be called when the query
 238  * completes (or fails); status is 0 for a successful response, -EINTR
 239  * if the query is canceled, -ETIMEDOUT is the query timed out, or
 240  * -EIO if an error occurred sending the query.  The resp parameter of
 241  * the callback is only valid if status is 0.
 242  *
 243  * If the return value of ib_sa_mcmember_rec_set() is negative, it is
 244  * an error code.  Otherwise it is a query ID that can be used to
 245  * cancel the query.
 246  */
 247 static inline int
 248 ib_sa_mcmember_rec_set(struct ib_device *device, u8 port_num,
 249                        struct ib_sa_mcmember_rec *rec,
 250                        ib_sa_comp_mask comp_mask,
 251                        int timeout_ms, int gfp_mask,
 252                        void (*callback)(int status,
 253                                         struct ib_sa_mcmember_rec *resp,
 254                                         void *context),
 255                        void *context,
 256                        struct ib_sa_query **query)
 257 {
 258         return ib_sa_mcmember_rec_query(device, port_num,
 259                                         IB_MGMT_METHOD_SET,
 260                                         rec, comp_mask,
 261                                         timeout_ms, gfp_mask, callback,
 262                                         context, query);
 263 }
 264
 265 /**
 266  * ib_sa_mcmember_rec_delete - Start an MCMember delete query
 267  * @device:device to send query on
 268  * @port_num: port number to send query on
 269  * @rec:MCMember Record to send in query
 270  * @comp_mask:component mask to send in query
 271  * @timeout_ms:time to wait for response
 272  * @gfp_mask:GFP mask to use for internal allocations
 273  * @callback:function called when query completes, times out or is
 274  * canceled
 275  * @context:opaque user context passed to callback
 276  * @sa_query:query context, used to cancel query
 277  *
 278  * Send an MCMember Delete query to the SA (eg to leave a multicast
 279  * group).  The callback function will be called when the query
 280  * completes (or fails); status is 0 for a successful response, -EINTR
 281  * if the query is canceled, -ETIMEDOUT is the query timed out, or
 282  * -EIO if an error occurred sending the query.  The resp parameter of
 283  * the callback is only valid if status is 0.
 284  *
 285  * If the return value of ib_sa_mcmember_rec_delete() is negative, it
 286  * is an error code.  Otherwise it is a query ID that can be used to
 287  * cancel the query.
 288  */
 289 static inline int
 290 ib_sa_mcmember_rec_delete(struct ib_device *device, u8 port_num,
 291                           struct ib_sa_mcmember_rec *rec,
 292                           ib_sa_comp_mask comp_mask,
 293                           int timeout_ms, int 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         return ib_sa_mcmember_rec_query(device, port_num,
 301                                         IB_SA_METHOD_DELETE,
 302                                         rec, comp_mask,
 303                                         timeout_ms, gfp_mask, callback,
 304                                         context, query);
 305 }
 306
 307
 308 #endif /* IB_SA_H */