LXR linux/include/rdma/ib

   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
  35#ifndef IB_SA_H
  36#define IB_SA_H
  37
  38#include <linux/completion.h>
  39#include <linux/compiler.h>
  40
  41#include <linux/atomic.h>
  42#include <linux/netdevice.h>
  43
  44#include <rdma/ib_verbs.h>
  45#include <rdma/ib_mad.h>
  46#include <rdma/ib_addr.h>
  47#include <rdma/opa_addr.h>
  48
  49enum {
  50        IB_SA_CLASS_VERSION             = 2,    /* IB spec version 1.1/1.2 */
  51
  52        IB_SA_METHOD_GET_TABLE          = 0x12,
  53        IB_SA_METHOD_GET_TABLE_RESP     = 0x92,
  54        IB_SA_METHOD_DELETE             = 0x15,
  55        IB_SA_METHOD_DELETE_RESP        = 0x95,
  56        IB_SA_METHOD_GET_MULTI          = 0x14,
  57        IB_SA_METHOD_GET_MULTI_RESP     = 0x94,
  58        IB_SA_METHOD_GET_TRACE_TBL      = 0x13
  59};
  60
  61#define OPA_SA_CLASS_VERSION    0x80
  62enum {
  63        IB_SA_ATTR_CLASS_PORTINFO    = 0x01,
  64        IB_SA_ATTR_NOTICE            = 0x02,
  65        IB_SA_ATTR_INFORM_INFO       = 0x03,
  66        IB_SA_ATTR_NODE_REC          = 0x11,
  67        IB_SA_ATTR_PORT_INFO_REC     = 0x12,
  68        IB_SA_ATTR_SL2VL_REC         = 0x13,
  69        IB_SA_ATTR_SWITCH_REC        = 0x14,
  70        IB_SA_ATTR_LINEAR_FDB_REC    = 0x15,
  71        IB_SA_ATTR_RANDOM_FDB_REC    = 0x16,
  72        IB_SA_ATTR_MCAST_FDB_REC     = 0x17,
  73        IB_SA_ATTR_SM_INFO_REC       = 0x18,
  74        IB_SA_ATTR_LINK_REC          = 0x20,
  75        IB_SA_ATTR_GUID_INFO_REC     = 0x30,
  76        IB_SA_ATTR_SERVICE_REC       = 0x31,
  77        IB_SA_ATTR_PARTITION_REC     = 0x33,
  78        IB_SA_ATTR_PATH_REC          = 0x35,
  79        IB_SA_ATTR_VL_ARB_REC        = 0x36,
  80        IB_SA_ATTR_MC_MEMBER_REC     = 0x38,
  81        IB_SA_ATTR_TRACE_REC         = 0x39,
  82        IB_SA_ATTR_MULTI_PATH_REC    = 0x3a,
  83        IB_SA_ATTR_SERVICE_ASSOC_REC = 0x3b,
  84        IB_SA_ATTR_INFORM_INFO_REC   = 0xf3
  85};
  86
  87enum ib_sa_selector {
  88        IB_SA_GT   = 0,
  89        IB_SA_LT   = 1,
  90        IB_SA_EQ   = 2,
  91        /*
  92         * The meaning of "best" depends on the attribute: for
  93         * example, for MTU best will return the largest available
  94         * MTU, while for packet life time, best will return the
  95         * smallest available life time.
  96         */
  97        IB_SA_BEST = 3
  98};
  99
 100/*
 101 * There are 4 types of join states:
 102 * FullMember, NonMember, SendOnlyNonMember, SendOnlyFullMember.
 103 * The order corresponds to JoinState bits in MCMemberRecord.
 104 */
 105enum ib_sa_mc_join_states {
 106        FULLMEMBER_JOIN,
 107        NONMEMBER_JOIN,
 108        SENDONLY_NONMEBER_JOIN,
 109        SENDONLY_FULLMEMBER_JOIN,
 110        NUM_JOIN_MEMBERSHIP_TYPES,
 111};
 112
 113#define IB_SA_CAP_MASK2_SENDONLY_FULL_MEM_SUPPORT       BIT(12)
 114
 115/*
 116 * Structures for SA records are named "struct ib_sa_xxx_rec."  No
 117 * attempt is made to pack structures to match the physical layout of
 118 * SA records in SA MADs; all packing and unpacking is handled by the
 119 * SA query code.
 120 *
 121 * For a record with structure ib_sa_xxx_rec, the naming convention
 122 * for the component mask value for field yyy is IB_SA_XXX_REC_YYY (we
 123 * never use different abbreviations or otherwise change the spelling
 124 * of xxx/yyy between ib_sa_xxx_rec.yyy and IB_SA_XXX_REC_YYY).
 125 *
 126 * Reserved rows are indicated with comments to help maintainability.
 127 */
 128
 129#define IB_SA_PATH_REC_SERVICE_ID                      (IB_SA_COMP_MASK( 0) |\
 130                                                        IB_SA_COMP_MASK( 1))
 131#define IB_SA_PATH_REC_DGID                             IB_SA_COMP_MASK( 2)
 132#define IB_SA_PATH_REC_SGID                             IB_SA_COMP_MASK( 3)
 133#define IB_SA_PATH_REC_DLID                             IB_SA_COMP_MASK( 4)
 134#define IB_SA_PATH_REC_SLID                             IB_SA_COMP_MASK( 5)
 135#define IB_SA_PATH_REC_RAW_TRAFFIC                      IB_SA_COMP_MASK( 6)
 136/* reserved:                                                             7 */
 137#define IB_SA_PATH_REC_FLOW_LABEL                       IB_SA_COMP_MASK( 8)
 138#define IB_SA_PATH_REC_HOP_LIMIT                        IB_SA_COMP_MASK( 9)
 139#define IB_SA_PATH_REC_TRAFFIC_CLASS                    IB_SA_COMP_MASK(10)
 140#define IB_SA_PATH_REC_REVERSIBLE                       IB_SA_COMP_MASK(11)
 141#define IB_SA_PATH_REC_NUMB_PATH                        IB_SA_COMP_MASK(12)
 142#define IB_SA_PATH_REC_PKEY                             IB_SA_COMP_MASK(13)
 143#define IB_SA_PATH_REC_QOS_CLASS                        IB_SA_COMP_MASK(14)
 144#define IB_SA_PATH_REC_SL                               IB_SA_COMP_MASK(15)
 145#define IB_SA_PATH_REC_MTU_SELECTOR                     IB_SA_COMP_MASK(16)
 146#define IB_SA_PATH_REC_MTU                              IB_SA_COMP_MASK(17)
 147#define IB_SA_PATH_REC_RATE_SELECTOR                    IB_SA_COMP_MASK(18)
 148#define IB_SA_PATH_REC_RATE                             IB_SA_COMP_MASK(19)
 149#define IB_SA_PATH_REC_PACKET_LIFE_TIME_SELECTOR        IB_SA_COMP_MASK(20)
 150#define IB_SA_PATH_REC_PACKET_LIFE_TIME                 IB_SA_COMP_MASK(21)
 151#define IB_SA_PATH_REC_PREFERENCE                       IB_SA_COMP_MASK(22)
 152
 153enum sa_path_rec_type {
 154        SA_PATH_REC_TYPE_IB,
 155        SA_PATH_REC_TYPE_ROCE_V1,
 156        SA_PATH_REC_TYPE_ROCE_V2,
 157        SA_PATH_REC_TYPE_OPA
 158};
 159
 160struct sa_path_rec_ib {
 161        __be16       dlid;
 162        __be16       slid;
 163        u8           raw_traffic;
 164};
 165
 166/**
 167 * struct sa_path_rec_roce - RoCE specific portion of the path record entry
 168 * @route_resolved:     When set, it indicates that this route is already
 169 *                      resolved for this path record entry.
 170 * @dmac:               Destination mac address for the given DGID entry
 171 *                      of the path record entry.
 172 */
 173struct sa_path_rec_roce {
 174        bool    route_resolved;
 175        u8           dmac[ETH_ALEN];
 176        /* ignored in IB */
 177        int          ifindex;
 178        /* ignored in IB */
 179        struct net  *net;
 180
 181};
 182
 183struct sa_path_rec_opa {
 184        __be32       dlid;
 185        __be32       slid;
 186        u8           raw_traffic;
 187        u8           l2_8B;
 188        u8           l2_10B;
 189        u8           l2_9B;
 190        u8           l2_16B;
 191        u8           qos_type;
 192        u8           qos_priority;
 193};
 194
 195struct sa_path_rec {
 196        union ib_gid dgid;
 197        union ib_gid sgid;
 198        __be64       service_id;
 199        /* reserved */
 200        __be32       flow_label;
 201        u8           hop_limit;
 202        u8           traffic_class;
 203        u8           reversible;
 204        u8           numb_path;
 205        __be16       pkey;
 206        __be16       qos_class;
 207        u8           sl;
 208        u8           mtu_selector;
 209        u8           mtu;
 210        u8           rate_selector;
 211        u8           rate;
 212        u8           packet_life_time_selector;
 213        u8           packet_life_time;
 214        u8           preference;
 215        union {
 216                struct sa_path_rec_ib ib;
 217                struct sa_path_rec_roce roce;
 218                struct sa_path_rec_opa opa;
 219        };
 220        enum sa_path_rec_type rec_type;
 221};
 222
 223static inline enum ib_gid_type
 224                sa_conv_pathrec_to_gid_type(struct sa_path_rec *rec)
 225{
 226        switch (rec->rec_type) {
 227        case SA_PATH_REC_TYPE_ROCE_V1:
 228                return IB_GID_TYPE_ROCE;
 229        case SA_PATH_REC_TYPE_ROCE_V2:
 230                return IB_GID_TYPE_ROCE_UDP_ENCAP;
 231        default:
 232                return IB_GID_TYPE_IB;
 233        }
 234}
 235
 236static inline enum sa_path_rec_type
 237                sa_conv_gid_to_pathrec_type(enum ib_gid_type type)
 238{
 239        switch (type) {
 240        case IB_GID_TYPE_ROCE:
 241                return SA_PATH_REC_TYPE_ROCE_V1;
 242        case IB_GID_TYPE_ROCE_UDP_ENCAP:
 243                return SA_PATH_REC_TYPE_ROCE_V2;
 244        default:
 245                return SA_PATH_REC_TYPE_IB;
 246        }
 247}
 248
 249static inline void path_conv_opa_to_ib(struct sa_path_rec *ib,
 250                                       struct sa_path_rec *opa)
 251{
 252        if ((be32_to_cpu(opa->opa.dlid) >=
 253             be16_to_cpu(IB_MULTICAST_LID_BASE)) ||
 254            (be32_to_cpu(opa->opa.slid) >=
 255             be16_to_cpu(IB_MULTICAST_LID_BASE))) {
 256                /* Create OPA GID and zero out the LID */
 257                ib->dgid.global.interface_id
 258                                = OPA_MAKE_ID(be32_to_cpu(opa->opa.dlid));
 259                ib->dgid.global.subnet_prefix
 260                                = opa->dgid.global.subnet_prefix;
 261                ib->sgid.global.interface_id
 262                                = OPA_MAKE_ID(be32_to_cpu(opa->opa.slid));
 263                ib->dgid.global.subnet_prefix
 264                                = opa->dgid.global.subnet_prefix;
 265                ib->ib.dlid     = 0;
 266
 267                ib->ib.slid     = 0;
 268        } else {
 269                ib->ib.dlid     = htons(ntohl(opa->opa.dlid));
 270                ib->ib.slid     = htons(ntohl(opa->opa.slid));
 271        }
 272        ib->service_id          = opa->service_id;
 273        ib->ib.raw_traffic      = opa->opa.raw_traffic;
 274}
 275
 276static inline void path_conv_ib_to_opa(struct sa_path_rec *opa,
 277                                       struct sa_path_rec *ib)
 278{
 279        __be32 slid, dlid;
 280
 281        if ((ib_is_opa_gid(&ib->sgid)) ||
 282            (ib_is_opa_gid(&ib->dgid))) {
 283                slid = htonl(opa_get_lid_from_gid(&ib->sgid));
 284                dlid = htonl(opa_get_lid_from_gid(&ib->dgid));
 285        } else {
 286                slid = htonl(ntohs(ib->ib.slid));
 287                dlid = htonl(ntohs(ib->ib.dlid));
 288        }
 289        opa->opa.slid           = slid;
 290        opa->opa.dlid           = dlid;
 291        opa->service_id         = ib->service_id;
 292        opa->opa.raw_traffic    = ib->ib.raw_traffic;
 293}
 294
 295/* Convert from OPA to IB path record */
 296static inline void sa_convert_path_opa_to_ib(struct sa_path_rec *dest,
 297                                             struct sa_path_rec *src)
 298{
 299        if (src->rec_type != SA_PATH_REC_TYPE_OPA)
 300                return;
 301
 302        *dest = *src;
 303        dest->rec_type = SA_PATH_REC_TYPE_IB;
 304        path_conv_opa_to_ib(dest, src);
 305}
 306
 307/* Convert from IB to OPA path record */
 308static inline void sa_convert_path_ib_to_opa(struct sa_path_rec *dest,
 309                                             struct sa_path_rec *src)
 310{
 311        if (src->rec_type != SA_PATH_REC_TYPE_IB)
 312                return;
 313
 314        /* Do a structure copy and overwrite the relevant fields */
 315        *dest = *src;
 316        dest->rec_type = SA_PATH_REC_TYPE_OPA;
 317        path_conv_ib_to_opa(dest, src);
 318}
 319
 320#define IB_SA_MCMEMBER_REC_MGID                         IB_SA_COMP_MASK( 0)
 321#define IB_SA_MCMEMBER_REC_PORT_GID                     IB_SA_COMP_MASK( 1)
 322#define IB_SA_MCMEMBER_REC_QKEY                         IB_SA_COMP_MASK( 2)
 323#define IB_SA_MCMEMBER_REC_MLID                         IB_SA_COMP_MASK( 3)
 324#define IB_SA_MCMEMBER_REC_MTU_SELECTOR                 IB_SA_COMP_MASK( 4)
 325#define IB_SA_MCMEMBER_REC_MTU                          IB_SA_COMP_MASK( 5)
 326#define IB_SA_MCMEMBER_REC_TRAFFIC_CLASS                IB_SA_COMP_MASK( 6)
 327#define IB_SA_MCMEMBER_REC_PKEY                         IB_SA_COMP_MASK( 7)
 328#define IB_SA_MCMEMBER_REC_RATE_SELECTOR                IB_SA_COMP_MASK( 8)
 329#define IB_SA_MCMEMBER_REC_RATE                         IB_SA_COMP_MASK( 9)
 330#define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR    IB_SA_COMP_MASK(10)
 331#define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME             IB_SA_COMP_MASK(11)
 332#define IB_SA_MCMEMBER_REC_SL                           IB_SA_COMP_MASK(12)
 333#define IB_SA_MCMEMBER_REC_FLOW_LABEL                   IB_SA_COMP_MASK(13)
 334#define IB_SA_MCMEMBER_REC_HOP_LIMIT                    IB_SA_COMP_MASK(14)
 335#define IB_SA_MCMEMBER_REC_SCOPE                        IB_SA_COMP_MASK(15)
 336#define IB_SA_MCMEMBER_REC_JOIN_STATE                   IB_SA_COMP_MASK(16)
 337#define IB_SA_MCMEMBER_REC_PROXY_JOIN                   IB_SA_COMP_MASK(17)
 338
 339struct ib_sa_mcmember_rec {
 340        union ib_gid mgid;
 341        union ib_gid port_gid;
 342        __be32       qkey;
 343        __be16       mlid;
 344        u8           mtu_selector;
 345        u8           mtu;
 346        u8           traffic_class;
 347        __be16       pkey;
 348        u8           rate_selector;
 349        u8           rate;
 350        u8           packet_life_time_selector;
 351        u8           packet_life_time;
 352        u8           sl;
 353        __be32       flow_label;
 354        u8           hop_limit;
 355        u8           scope;
 356        u8           join_state;
 357        u8           proxy_join;
 358};
 359
 360/* Service Record Component Mask Sec 15.2.5.14 Ver 1.1  */
 361#define IB_SA_SERVICE_REC_SERVICE_ID                    IB_SA_COMP_MASK( 0)
 362#define IB_SA_SERVICE_REC_SERVICE_GID                   IB_SA_COMP_MASK( 1)
 363#define IB_SA_SERVICE_REC_SERVICE_PKEY                  IB_SA_COMP_MASK( 2)
 364/* reserved:                                                             3 */
 365#define IB_SA_SERVICE_REC_SERVICE_LEASE                 IB_SA_COMP_MASK( 4)
 366#define IB_SA_SERVICE_REC_SERVICE_KEY                   IB_SA_COMP_MASK( 5)
 367#define IB_SA_SERVICE_REC_SERVICE_NAME                  IB_SA_COMP_MASK( 6)
 368#define IB_SA_SERVICE_REC_SERVICE_DATA8_0               IB_SA_COMP_MASK( 7)
 369#define IB_SA_SERVICE_REC_SERVICE_DATA8_1               IB_SA_COMP_MASK( 8)
 370#define IB_SA_SERVICE_REC_SERVICE_DATA8_2               IB_SA_COMP_MASK( 9)
 371#define IB_SA_SERVICE_REC_SERVICE_DATA8_3               IB_SA_COMP_MASK(10)
 372#define IB_SA_SERVICE_REC_SERVICE_DATA8_4               IB_SA_COMP_MASK(11)
 373#define IB_SA_SERVICE_REC_SERVICE_DATA8_5               IB_SA_COMP_MASK(12)
 374#define IB_SA_SERVICE_REC_SERVICE_DATA8_6               IB_SA_COMP_MASK(13)
 375#define IB_SA_SERVICE_REC_SERVICE_DATA8_7               IB_SA_COMP_MASK(14)
 376#define IB_SA_SERVICE_REC_SERVICE_DATA8_8               IB_SA_COMP_MASK(15)
 377#define IB_SA_SERVICE_REC_SERVICE_DATA8_9               IB_SA_COMP_MASK(16)
 378#define IB_SA_SERVICE_REC_SERVICE_DATA8_10              IB_SA_COMP_MASK(17)
 379#define IB_SA_SERVICE_REC_SERVICE_DATA8_11              IB_SA_COMP_MASK(18)
 380#define IB_SA_SERVICE_REC_SERVICE_DATA8_12              IB_SA_COMP_MASK(19)
 381#define IB_SA_SERVICE_REC_SERVICE_DATA8_13              IB_SA_COMP_MASK(20)
 382#define IB_SA_SERVICE_REC_SERVICE_DATA8_14              IB_SA_COMP_MASK(21)
 383#define IB_SA_SERVICE_REC_SERVICE_DATA8_15              IB_SA_COMP_MASK(22)
 384#define IB_SA_SERVICE_REC_SERVICE_DATA16_0              IB_SA_COMP_MASK(23)
 385#define IB_SA_SERVICE_REC_SERVICE_DATA16_1              IB_SA_COMP_MASK(24)
 386#define IB_SA_SERVICE_REC_SERVICE_DATA16_2              IB_SA_COMP_MASK(25)
 387#define IB_SA_SERVICE_REC_SERVICE_DATA16_3              IB_SA_COMP_MASK(26)
 388#define IB_SA_SERVICE_REC_SERVICE_DATA16_4              IB_SA_COMP_MASK(27)
 389#define IB_SA_SERVICE_REC_SERVICE_DATA16_5              IB_SA_COMP_MASK(28)
 390#define IB_SA_SERVICE_REC_SERVICE_DATA16_6              IB_SA_COMP_MASK(29)
 391#define IB_SA_SERVICE_REC_SERVICE_DATA16_7              IB_SA_COMP_MASK(30)
 392#define IB_SA_SERVICE_REC_SERVICE_DATA32_0              IB_SA_COMP_MASK(31)
 393#define IB_SA_SERVICE_REC_SERVICE_DATA32_1              IB_SA_COMP_MASK(32)
 394#define IB_SA_SERVICE_REC_SERVICE_DATA32_2              IB_SA_COMP_MASK(33)
 395#define IB_SA_SERVICE_REC_SERVICE_DATA32_3              IB_SA_COMP_MASK(34)
 396#define IB_SA_SERVICE_REC_SERVICE_DATA64_0              IB_SA_COMP_MASK(35)
 397#define IB_SA_SERVICE_REC_SERVICE_DATA64_1              IB_SA_COMP_MASK(36)
 398
 399#define IB_DEFAULT_SERVICE_LEASE        0xFFFFFFFF
 400
 401struct ib_sa_service_rec {
 402        u64             id;
 403        union ib_gid    gid;
 404        __be16          pkey;
 405        /* reserved */
 406        u32             lease;
 407        u8              key[16];
 408        u8              name[64];
 409        u8              data8[16];
 410        u16             data16[8];
 411        u32             data32[4];
 412        u64             data64[2];
 413};
 414
 415#define IB_SA_GUIDINFO_REC_LID          IB_SA_COMP_MASK(0)
 416#define IB_SA_GUIDINFO_REC_BLOCK_NUM    IB_SA_COMP_MASK(1)
 417#define IB_SA_GUIDINFO_REC_RES1         IB_SA_COMP_MASK(2)
 418#define IB_SA_GUIDINFO_REC_RES2         IB_SA_COMP_MASK(3)
 419#define IB_SA_GUIDINFO_REC_GID0         IB_SA_COMP_MASK(4)
 420#define IB_SA_GUIDINFO_REC_GID1         IB_SA_COMP_MASK(5)
 421#define IB_SA_GUIDINFO_REC_GID2         IB_SA_COMP_MASK(6)
 422#define IB_SA_GUIDINFO_REC_GID3         IB_SA_COMP_MASK(7)
 423#define IB_SA_GUIDINFO_REC_GID4         IB_SA_COMP_MASK(8)
 424#define IB_SA_GUIDINFO_REC_GID5         IB_SA_COMP_MASK(9)
 425#define IB_SA_GUIDINFO_REC_GID6         IB_SA_COMP_MASK(10)
 426#define IB_SA_GUIDINFO_REC_GID7         IB_SA_COMP_MASK(11)
 427
 428struct ib_sa_guidinfo_rec {
 429        __be16  lid;
 430        u8      block_num;
 431        /* reserved */
 432        u8      res1;
 433        __be32  res2;
 434        u8      guid_info_list[64];
 435};
 436
 437struct ib_sa_client {
 438        atomic_t users;
 439        struct completion comp;
 440};
 441
 442/**
 443 * ib_sa_register_client - Register an SA client.
 444 */
 445void ib_sa_register_client(struct ib_sa_client *client);
 446
 447/**
 448 * ib_sa_unregister_client - Deregister an SA client.
 449 * @client: Client object to deregister.
 450 */
 451void ib_sa_unregister_client(struct ib_sa_client *client);
 452
 453struct ib_sa_query;
 454
 455void ib_sa_cancel_query(int id, struct ib_sa_query *query);
 456
 457int ib_sa_path_rec_get(struct ib_sa_client *client,
 458                       struct ib_device *device, u8 port_num,
 459                       struct sa_path_rec *rec,
 460                       ib_sa_comp_mask comp_mask,
 461                       int timeout_ms, gfp_t gfp_mask,
 462                       void (*callback)(int status,
 463                                        struct sa_path_rec *resp,
 464                                        void *context),
 465                       void *context,
 466                       struct ib_sa_query **query);
 467
 468int ib_sa_service_rec_query(struct ib_sa_client *client,
 469                         struct ib_device *device, u8 port_num,
 470                         u8 method,
 471                         struct ib_sa_service_rec *rec,
 472                         ib_sa_comp_mask comp_mask,
 473                         int timeout_ms, gfp_t gfp_mask,
 474                         void (*callback)(int status,
 475                                          struct ib_sa_service_rec *resp,
 476                                          void *context),
 477                         void *context,
 478                         struct ib_sa_query **sa_query);
 479
 480struct ib_sa_multicast {
 481        struct ib_sa_mcmember_rec rec;
 482        ib_sa_comp_mask         comp_mask;
 483        int                     (*callback)(int status,
 484                                            struct ib_sa_multicast *multicast);
 485        void                    *context;
 486};
 487
 488/**
 489 * ib_sa_join_multicast - Initiates a join request to the specified multicast
 490 *   group.
 491 * @client: SA client
 492 * @device: Device associated with the multicast group.
 493 * @port_num: Port on the specified device to associate with the multicast
 494 *   group.
 495 * @rec: SA multicast member record specifying group attributes.
 496 * @comp_mask: Component mask indicating which group attributes of %rec are
 497 *   valid.
 498 * @gfp_mask: GFP mask for memory allocations.
 499 * @callback: User callback invoked once the join operation completes.
 500 * @context: User specified context stored with the ib_sa_multicast structure.
 501 *
 502 * This call initiates a multicast join request with the SA for the specified
 503 * multicast group.  If the join operation is started successfully, it returns
 504 * an ib_sa_multicast structure that is used to track the multicast operation.
 505 * Users must free this structure by calling ib_free_multicast, even if the
 506 * join operation later fails.  (The callback status is non-zero.)
 507 *
 508 * If the join operation fails; status will be non-zero, with the following
 509 * failures possible:
 510 * -ETIMEDOUT: The request timed out.
 511 * -EIO: An error occurred sending the query.
 512 * -EINVAL: The MCMemberRecord values differed from the existing group's.
 513 * -ENETRESET: Indicates that an fatal error has occurred on the multicast
 514 *   group, and the user must rejoin the group to continue using it.
 515 */
 516struct ib_sa_multicast *ib_sa_join_multicast(struct ib_sa_client *client,
 517                                             struct ib_device *device, u8 port_num,
 518                                             struct ib_sa_mcmember_rec *rec,
 519                                             ib_sa_comp_mask comp_mask, gfp_t gfp_mask,
 520                                             int (*callback)(int status,
 521                                                             struct ib_sa_multicast
 522                                                                    *multicast),
 523                                             void *context);
 524
 525/**
 526 * ib_free_multicast - Frees the multicast tracking structure, and releases
 527 *    any reference on the multicast group.
 528 * @multicast: Multicast tracking structure allocated by ib_join_multicast.
 529 *
 530 * This call blocks until the multicast identifier is destroyed.  It may
 531 * not be called from within the multicast callback; however, returning a non-
 532 * zero value from the callback will result in destroying the multicast
 533 * tracking structure.
 534 */
 535void ib_sa_free_multicast(struct ib_sa_multicast *multicast);
 536
 537/**
 538 * ib_get_mcmember_rec - Looks up a multicast member record by its MGID and
 539 *   returns it if found.
 540 * @device: Device associated with the multicast group.
 541 * @port_num: Port on the specified device to associate with the multicast
 542 *   group.
 543 * @mgid: MGID of multicast group.
 544 * @rec: Location to copy SA multicast member record.
 545 */
 546int ib_sa_get_mcmember_rec(struct ib_device *device, u8 port_num,
 547                           union ib_gid *mgid, struct ib_sa_mcmember_rec *rec);
 548
 549/**
 550 * ib_init_ah_from_mcmember - Initialize address handle attributes based on
 551 * an SA multicast member record.
 552 */
 553int ib_init_ah_from_mcmember(struct ib_device *device, u8 port_num,
 554                             struct ib_sa_mcmember_rec *rec,
 555                             struct net_device *ndev,
 556                             enum ib_gid_type gid_type,
 557                             struct rdma_ah_attr *ah_attr);
 558
 559/**
 560 * ib_init_ah_attr_from_path - Initialize address handle attributes based on
 561 *   an SA path record.
 562 */
 563int ib_init_ah_attr_from_path(struct ib_device *device, u8 port_num,
 564                              struct sa_path_rec *rec,
 565                              struct rdma_ah_attr *ah_attr);
 566
 567/**
 568 * ib_sa_pack_path - Conert a path record from struct ib_sa_path_rec
 569 * to IB MAD wire format.
 570 */
 571void ib_sa_pack_path(struct sa_path_rec *rec, void *attribute);
 572
 573/**
 574 * ib_sa_unpack_path - Convert a path record from MAD format to struct
 575 * ib_sa_path_rec.
 576 */
 577void ib_sa_unpack_path(void *attribute, struct sa_path_rec *rec);
 578
 579/* Support GuidInfoRecord */
 580int ib_sa_guid_info_rec_query(struct ib_sa_client *client,
 581                              struct ib_device *device, u8 port_num,
 582                              struct ib_sa_guidinfo_rec *rec,
 583                              ib_sa_comp_mask comp_mask, u8 method,
 584                              int timeout_ms, gfp_t gfp_mask,
 585                              void (*callback)(int status,
 586                                               struct ib_sa_guidinfo_rec *resp,
 587                                               void *context),
 588                              void *context,
 589                              struct ib_sa_query **sa_query);
 590
 591bool ib_sa_sendonly_fullmem_support(struct ib_sa_client *client,
 592                                    struct ib_device *device,
 593                                    u8 port_num);
 594
 595static inline bool sa_path_is_roce(struct sa_path_rec *rec)
 596{
 597        return ((rec->rec_type == SA_PATH_REC_TYPE_ROCE_V1) ||
 598                (rec->rec_type == SA_PATH_REC_TYPE_ROCE_V2));
 599}
 600
 601static inline bool sa_path_is_opa(struct sa_path_rec *rec)
 602{
 603        return (rec->rec_type == SA_PATH_REC_TYPE_OPA);
 604}
 605
 606static inline void sa_path_set_slid(struct sa_path_rec *rec, u32 slid)
 607{
 608        if (rec->rec_type == SA_PATH_REC_TYPE_IB)
 609                rec->ib.slid = cpu_to_be16(slid);
 610        else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
 611                rec->opa.slid = cpu_to_be32(slid);
 612}
 613
 614static inline void sa_path_set_dlid(struct sa_path_rec *rec, u32 dlid)
 615{
 616        if (rec->rec_type == SA_PATH_REC_TYPE_IB)
 617                rec->ib.dlid = cpu_to_be16(dlid);
 618        else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
 619                rec->opa.dlid = cpu_to_be32(dlid);
 620}
 621
 622static inline void sa_path_set_raw_traffic(struct sa_path_rec *rec,
 623                                           u8 raw_traffic)
 624{
 625        if (rec->rec_type == SA_PATH_REC_TYPE_IB)
 626                rec->ib.raw_traffic = raw_traffic;
 627        else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
 628                rec->opa.raw_traffic = raw_traffic;
 629}
 630
 631static inline __be32 sa_path_get_slid(struct sa_path_rec *rec)
 632{
 633        if (rec->rec_type == SA_PATH_REC_TYPE_IB)
 634                return htonl(ntohs(rec->ib.slid));
 635        else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
 636                return rec->opa.slid;
 637        return 0;
 638}
 639
 640static inline __be32 sa_path_get_dlid(struct sa_path_rec *rec)
 641{
 642        if (rec->rec_type == SA_PATH_REC_TYPE_IB)
 643                return htonl(ntohs(rec->ib.dlid));
 644        else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
 645                return rec->opa.dlid;
 646        return 0;
 647}
 648
 649static inline u8 sa_path_get_raw_traffic(struct sa_path_rec *rec)
 650{
 651        if (rec->rec_type == SA_PATH_REC_TYPE_IB)
 652                return rec->ib.raw_traffic;
 653        else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
 654                return rec->opa.raw_traffic;
 655        return 0;
 656}
 657
 658static inline void sa_path_set_dmac(struct sa_path_rec *rec, u8 *dmac)
 659{
 660        if (sa_path_is_roce(rec))
 661                memcpy(rec->roce.dmac, dmac, ETH_ALEN);
 662}
 663
 664static inline void sa_path_set_dmac_zero(struct sa_path_rec *rec)
 665{
 666        if (sa_path_is_roce(rec))
 667                eth_zero_addr(rec->roce.dmac);
 668}
 669
 670static inline void sa_path_set_ifindex(struct sa_path_rec *rec, int ifindex)
 671{
 672        if (sa_path_is_roce(rec))
 673                rec->roce.ifindex = ifindex;
 674}
 675
 676static inline void sa_path_set_ndev(struct sa_path_rec *rec, struct net *net)
 677{
 678        if (sa_path_is_roce(rec))
 679                rec->roce.net = net;
 680}
 681
 682static inline u8 *sa_path_get_dmac(struct sa_path_rec *rec)
 683{
 684        if (sa_path_is_roce(rec))
 685                return rec->roce.dmac;
 686        return NULL;
 687}
 688
 689static inline int sa_path_get_ifindex(struct sa_path_rec *rec)
 690{
 691        if (sa_path_is_roce(rec))
 692                return rec->roce.ifindex;
 693        return 0;
 694}
 695
 696static inline struct net *sa_path_get_ndev(struct sa_path_rec *rec)
 697{
 698        if (sa_path_is_roce(rec))
 699                return rec->roce.net;
 700        return NULL;
 701}
 702
 703static inline struct net_device *ib_get_ndev_from_path(struct sa_path_rec *rec)
 704{
 705        return sa_path_get_ndev(rec) ?
 706                dev_get_by_index(sa_path_get_ndev(rec),
 707                                 sa_path_get_ifindex(rec))
 708                : NULL;
 709}
 710
 711#endif /* IB_SA_H */
 712