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0001 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
0002 /*
0003  * Copyright (c) 2004 Topspin Communications.  All rights reserved.
0004  * Copyright (c) 2005 Voltaire, Inc.  All rights reserved.
0005  * Copyright (c) 2006 Intel Corporation.  All rights reserved.
0006  */
0007 
0008 #ifndef IB_SA_H
0009 #define IB_SA_H
0010 
0011 #include <linux/completion.h>
0012 #include <linux/compiler.h>
0013 
0014 #include <linux/atomic.h>
0015 #include <linux/netdevice.h>
0016 
0017 #include <rdma/ib_verbs.h>
0018 #include <rdma/ib_mad.h>
0019 #include <rdma/ib_addr.h>
0020 #include <rdma/opa_addr.h>
0021 
0022 enum {
0023     IB_SA_CLASS_VERSION     = 2,    /* IB spec version 1.1/1.2 */
0024 
0025     IB_SA_METHOD_GET_TABLE      = 0x12,
0026     IB_SA_METHOD_GET_TABLE_RESP = 0x92,
0027     IB_SA_METHOD_DELETE     = 0x15,
0028     IB_SA_METHOD_DELETE_RESP    = 0x95,
0029     IB_SA_METHOD_GET_MULTI      = 0x14,
0030     IB_SA_METHOD_GET_MULTI_RESP = 0x94,
0031     IB_SA_METHOD_GET_TRACE_TBL  = 0x13
0032 };
0033 
0034 #define OPA_SA_CLASS_VERSION    0x80
0035 enum {
0036     IB_SA_ATTR_CLASS_PORTINFO    = 0x01,
0037     IB_SA_ATTR_NOTICE        = 0x02,
0038     IB_SA_ATTR_INFORM_INFO       = 0x03,
0039     IB_SA_ATTR_NODE_REC      = 0x11,
0040     IB_SA_ATTR_PORT_INFO_REC     = 0x12,
0041     IB_SA_ATTR_SL2VL_REC         = 0x13,
0042     IB_SA_ATTR_SWITCH_REC        = 0x14,
0043     IB_SA_ATTR_LINEAR_FDB_REC    = 0x15,
0044     IB_SA_ATTR_RANDOM_FDB_REC    = 0x16,
0045     IB_SA_ATTR_MCAST_FDB_REC     = 0x17,
0046     IB_SA_ATTR_SM_INFO_REC       = 0x18,
0047     IB_SA_ATTR_LINK_REC      = 0x20,
0048     IB_SA_ATTR_GUID_INFO_REC     = 0x30,
0049     IB_SA_ATTR_SERVICE_REC       = 0x31,
0050     IB_SA_ATTR_PARTITION_REC     = 0x33,
0051     IB_SA_ATTR_PATH_REC      = 0x35,
0052     IB_SA_ATTR_VL_ARB_REC        = 0x36,
0053     IB_SA_ATTR_MC_MEMBER_REC     = 0x38,
0054     IB_SA_ATTR_TRACE_REC         = 0x39,
0055     IB_SA_ATTR_MULTI_PATH_REC    = 0x3a,
0056     IB_SA_ATTR_SERVICE_ASSOC_REC = 0x3b,
0057     IB_SA_ATTR_INFORM_INFO_REC   = 0xf3
0058 };
0059 
0060 enum ib_sa_selector {
0061     IB_SA_GT   = 0,
0062     IB_SA_LT   = 1,
0063     IB_SA_EQ   = 2,
0064     /*
0065      * The meaning of "best" depends on the attribute: for
0066      * example, for MTU best will return the largest available
0067      * MTU, while for packet life time, best will return the
0068      * smallest available life time.
0069      */
0070     IB_SA_BEST = 3
0071 };
0072 
0073 /*
0074  * There are 4 types of join states:
0075  * FullMember, NonMember, SendOnlyNonMember, SendOnlyFullMember.
0076  * The order corresponds to JoinState bits in MCMemberRecord.
0077  */
0078 enum ib_sa_mc_join_states {
0079     FULLMEMBER_JOIN,
0080     NONMEMBER_JOIN,
0081     SENDONLY_NONMEBER_JOIN,
0082     SENDONLY_FULLMEMBER_JOIN,
0083     NUM_JOIN_MEMBERSHIP_TYPES,
0084 };
0085 
0086 #define IB_SA_CAP_MASK2_SENDONLY_FULL_MEM_SUPPORT   BIT(12)
0087 
0088 /*
0089  * Structures for SA records are named "struct ib_sa_xxx_rec."  No
0090  * attempt is made to pack structures to match the physical layout of
0091  * SA records in SA MADs; all packing and unpacking is handled by the
0092  * SA query code.
0093  *
0094  * For a record with structure ib_sa_xxx_rec, the naming convention
0095  * for the component mask value for field yyy is IB_SA_XXX_REC_YYY (we
0096  * never use different abbreviations or otherwise change the spelling
0097  * of xxx/yyy between ib_sa_xxx_rec.yyy and IB_SA_XXX_REC_YYY).
0098  *
0099  * Reserved rows are indicated with comments to help maintainability.
0100  */
0101 
0102 #define IB_SA_PATH_REC_SERVICE_ID              (IB_SA_COMP_MASK( 0) |\
0103                             IB_SA_COMP_MASK( 1))
0104 #define IB_SA_PATH_REC_DGID             IB_SA_COMP_MASK( 2)
0105 #define IB_SA_PATH_REC_SGID             IB_SA_COMP_MASK( 3)
0106 #define IB_SA_PATH_REC_DLID             IB_SA_COMP_MASK( 4)
0107 #define IB_SA_PATH_REC_SLID             IB_SA_COMP_MASK( 5)
0108 #define IB_SA_PATH_REC_RAW_TRAFFIC          IB_SA_COMP_MASK( 6)
0109 /* reserved:                                 7 */
0110 #define IB_SA_PATH_REC_FLOW_LABEL               IB_SA_COMP_MASK( 8)
0111 #define IB_SA_PATH_REC_HOP_LIMIT            IB_SA_COMP_MASK( 9)
0112 #define IB_SA_PATH_REC_TRAFFIC_CLASS            IB_SA_COMP_MASK(10)
0113 #define IB_SA_PATH_REC_REVERSIBLE           IB_SA_COMP_MASK(11)
0114 #define IB_SA_PATH_REC_NUMB_PATH            IB_SA_COMP_MASK(12)
0115 #define IB_SA_PATH_REC_PKEY             IB_SA_COMP_MASK(13)
0116 #define IB_SA_PATH_REC_QOS_CLASS            IB_SA_COMP_MASK(14)
0117 #define IB_SA_PATH_REC_SL               IB_SA_COMP_MASK(15)
0118 #define IB_SA_PATH_REC_MTU_SELECTOR         IB_SA_COMP_MASK(16)
0119 #define IB_SA_PATH_REC_MTU              IB_SA_COMP_MASK(17)
0120 #define IB_SA_PATH_REC_RATE_SELECTOR            IB_SA_COMP_MASK(18)
0121 #define IB_SA_PATH_REC_RATE             IB_SA_COMP_MASK(19)
0122 #define IB_SA_PATH_REC_PACKET_LIFE_TIME_SELECTOR    IB_SA_COMP_MASK(20)
0123 #define IB_SA_PATH_REC_PACKET_LIFE_TIME         IB_SA_COMP_MASK(21)
0124 #define IB_SA_PATH_REC_PREFERENCE           IB_SA_COMP_MASK(22)
0125 
0126 enum sa_path_rec_type {
0127     SA_PATH_REC_TYPE_IB,
0128     SA_PATH_REC_TYPE_ROCE_V1,
0129     SA_PATH_REC_TYPE_ROCE_V2,
0130     SA_PATH_REC_TYPE_OPA
0131 };
0132 
0133 struct sa_path_rec_ib {
0134     __be16       dlid;
0135     __be16       slid;
0136     u8           raw_traffic;
0137 };
0138 
0139 /**
0140  * struct sa_path_rec_roce - RoCE specific portion of the path record entry
0141  * @route_resolved: When set, it indicates that this route is already
0142  *          resolved for this path record entry.
0143  * @dmac:       Destination mac address for the given DGID entry
0144  *          of the path record entry.
0145  */
0146 struct sa_path_rec_roce {
0147     bool    route_resolved;
0148     u8  dmac[ETH_ALEN];
0149 };
0150 
0151 struct sa_path_rec_opa {
0152     __be32       dlid;
0153     __be32       slid;
0154     u8           raw_traffic;
0155     u8       l2_8B;
0156     u8       l2_10B;
0157     u8       l2_9B;
0158     u8       l2_16B;
0159     u8       qos_type;
0160     u8       qos_priority;
0161 };
0162 
0163 struct sa_path_rec {
0164     union ib_gid dgid;
0165     union ib_gid sgid;
0166     __be64       service_id;
0167     /* reserved */
0168     __be32       flow_label;
0169     u8           hop_limit;
0170     u8           traffic_class;
0171     u8           reversible;
0172     u8           numb_path;
0173     __be16       pkey;
0174     __be16       qos_class;
0175     u8           sl;
0176     u8           mtu_selector;
0177     u8           mtu;
0178     u8           rate_selector;
0179     u8           rate;
0180     u8           packet_life_time_selector;
0181     u8           packet_life_time;
0182     u8           preference;
0183     union {
0184         struct sa_path_rec_ib ib;
0185         struct sa_path_rec_roce roce;
0186         struct sa_path_rec_opa opa;
0187     };
0188     enum sa_path_rec_type rec_type;
0189 };
0190 
0191 static inline enum ib_gid_type
0192         sa_conv_pathrec_to_gid_type(struct sa_path_rec *rec)
0193 {
0194     switch (rec->rec_type) {
0195     case SA_PATH_REC_TYPE_ROCE_V1:
0196         return IB_GID_TYPE_ROCE;
0197     case SA_PATH_REC_TYPE_ROCE_V2:
0198         return IB_GID_TYPE_ROCE_UDP_ENCAP;
0199     default:
0200         return IB_GID_TYPE_IB;
0201     }
0202 }
0203 
0204 static inline enum sa_path_rec_type
0205         sa_conv_gid_to_pathrec_type(enum ib_gid_type type)
0206 {
0207     switch (type) {
0208     case IB_GID_TYPE_ROCE:
0209         return SA_PATH_REC_TYPE_ROCE_V1;
0210     case IB_GID_TYPE_ROCE_UDP_ENCAP:
0211         return SA_PATH_REC_TYPE_ROCE_V2;
0212     default:
0213         return SA_PATH_REC_TYPE_IB;
0214     }
0215 }
0216 
0217 static inline void path_conv_opa_to_ib(struct sa_path_rec *ib,
0218                        struct sa_path_rec *opa)
0219 {
0220     if ((be32_to_cpu(opa->opa.dlid) >=
0221          be16_to_cpu(IB_MULTICAST_LID_BASE)) ||
0222         (be32_to_cpu(opa->opa.slid) >=
0223          be16_to_cpu(IB_MULTICAST_LID_BASE))) {
0224         /* Create OPA GID and zero out the LID */
0225         ib->dgid.global.interface_id
0226                 = OPA_MAKE_ID(be32_to_cpu(opa->opa.dlid));
0227         ib->dgid.global.subnet_prefix
0228                 = opa->dgid.global.subnet_prefix;
0229         ib->sgid.global.interface_id
0230                 = OPA_MAKE_ID(be32_to_cpu(opa->opa.slid));
0231         ib->dgid.global.subnet_prefix
0232                 = opa->dgid.global.subnet_prefix;
0233         ib->ib.dlid = 0;
0234 
0235         ib->ib.slid = 0;
0236     } else {
0237         ib->ib.dlid = htons(ntohl(opa->opa.dlid));
0238         ib->ib.slid = htons(ntohl(opa->opa.slid));
0239     }
0240     ib->service_id      = opa->service_id;
0241     ib->ib.raw_traffic  = opa->opa.raw_traffic;
0242 }
0243 
0244 static inline void path_conv_ib_to_opa(struct sa_path_rec *opa,
0245                        struct sa_path_rec *ib)
0246 {
0247     __be32 slid, dlid;
0248 
0249     if ((ib_is_opa_gid(&ib->sgid)) ||
0250         (ib_is_opa_gid(&ib->dgid))) {
0251         slid = htonl(opa_get_lid_from_gid(&ib->sgid));
0252         dlid = htonl(opa_get_lid_from_gid(&ib->dgid));
0253     } else {
0254         slid = htonl(ntohs(ib->ib.slid));
0255         dlid = htonl(ntohs(ib->ib.dlid));
0256     }
0257     opa->opa.slid       = slid;
0258     opa->opa.dlid       = dlid;
0259     opa->service_id     = ib->service_id;
0260     opa->opa.raw_traffic    = ib->ib.raw_traffic;
0261 }
0262 
0263 /* Convert from OPA to IB path record */
0264 static inline void sa_convert_path_opa_to_ib(struct sa_path_rec *dest,
0265                          struct sa_path_rec *src)
0266 {
0267     if (src->rec_type != SA_PATH_REC_TYPE_OPA)
0268         return;
0269 
0270     *dest = *src;
0271     dest->rec_type = SA_PATH_REC_TYPE_IB;
0272     path_conv_opa_to_ib(dest, src);
0273 }
0274 
0275 /* Convert from IB to OPA path record */
0276 static inline void sa_convert_path_ib_to_opa(struct sa_path_rec *dest,
0277                          struct sa_path_rec *src)
0278 {
0279     if (src->rec_type != SA_PATH_REC_TYPE_IB)
0280         return;
0281 
0282     /* Do a structure copy and overwrite the relevant fields */
0283     *dest = *src;
0284     dest->rec_type = SA_PATH_REC_TYPE_OPA;
0285     path_conv_ib_to_opa(dest, src);
0286 }
0287 
0288 #define IB_SA_MCMEMBER_REC_MGID             IB_SA_COMP_MASK( 0)
0289 #define IB_SA_MCMEMBER_REC_PORT_GID         IB_SA_COMP_MASK( 1)
0290 #define IB_SA_MCMEMBER_REC_QKEY             IB_SA_COMP_MASK( 2)
0291 #define IB_SA_MCMEMBER_REC_MLID             IB_SA_COMP_MASK( 3)
0292 #define IB_SA_MCMEMBER_REC_MTU_SELECTOR         IB_SA_COMP_MASK( 4)
0293 #define IB_SA_MCMEMBER_REC_MTU              IB_SA_COMP_MASK( 5)
0294 #define IB_SA_MCMEMBER_REC_TRAFFIC_CLASS        IB_SA_COMP_MASK( 6)
0295 #define IB_SA_MCMEMBER_REC_PKEY             IB_SA_COMP_MASK( 7)
0296 #define IB_SA_MCMEMBER_REC_RATE_SELECTOR        IB_SA_COMP_MASK( 8)
0297 #define IB_SA_MCMEMBER_REC_RATE             IB_SA_COMP_MASK( 9)
0298 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR    IB_SA_COMP_MASK(10)
0299 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME     IB_SA_COMP_MASK(11)
0300 #define IB_SA_MCMEMBER_REC_SL               IB_SA_COMP_MASK(12)
0301 #define IB_SA_MCMEMBER_REC_FLOW_LABEL           IB_SA_COMP_MASK(13)
0302 #define IB_SA_MCMEMBER_REC_HOP_LIMIT            IB_SA_COMP_MASK(14)
0303 #define IB_SA_MCMEMBER_REC_SCOPE            IB_SA_COMP_MASK(15)
0304 #define IB_SA_MCMEMBER_REC_JOIN_STATE           IB_SA_COMP_MASK(16)
0305 #define IB_SA_MCMEMBER_REC_PROXY_JOIN           IB_SA_COMP_MASK(17)
0306 
0307 struct ib_sa_mcmember_rec {
0308     union ib_gid mgid;
0309     union ib_gid port_gid;
0310     __be32       qkey;
0311     __be16       mlid;
0312     u8           mtu_selector;
0313     u8           mtu;
0314     u8           traffic_class;
0315     __be16       pkey;
0316     u8       rate_selector;
0317     u8       rate;
0318     u8       packet_life_time_selector;
0319     u8       packet_life_time;
0320     u8           sl;
0321     __be32       flow_label;
0322     u8           hop_limit;
0323     u8           scope;
0324     u8           join_state;
0325     u8           proxy_join;
0326 };
0327 
0328 /* Service Record Component Mask Sec 15.2.5.14 Ver 1.1  */
0329 #define IB_SA_SERVICE_REC_SERVICE_ID            IB_SA_COMP_MASK( 0)
0330 #define IB_SA_SERVICE_REC_SERVICE_GID           IB_SA_COMP_MASK( 1)
0331 #define IB_SA_SERVICE_REC_SERVICE_PKEY          IB_SA_COMP_MASK( 2)
0332 /* reserved:                                 3 */
0333 #define IB_SA_SERVICE_REC_SERVICE_LEASE         IB_SA_COMP_MASK( 4)
0334 #define IB_SA_SERVICE_REC_SERVICE_KEY           IB_SA_COMP_MASK( 5)
0335 #define IB_SA_SERVICE_REC_SERVICE_NAME          IB_SA_COMP_MASK( 6)
0336 #define IB_SA_SERVICE_REC_SERVICE_DATA8_0       IB_SA_COMP_MASK( 7)
0337 #define IB_SA_SERVICE_REC_SERVICE_DATA8_1       IB_SA_COMP_MASK( 8)
0338 #define IB_SA_SERVICE_REC_SERVICE_DATA8_2       IB_SA_COMP_MASK( 9)
0339 #define IB_SA_SERVICE_REC_SERVICE_DATA8_3       IB_SA_COMP_MASK(10)
0340 #define IB_SA_SERVICE_REC_SERVICE_DATA8_4       IB_SA_COMP_MASK(11)
0341 #define IB_SA_SERVICE_REC_SERVICE_DATA8_5       IB_SA_COMP_MASK(12)
0342 #define IB_SA_SERVICE_REC_SERVICE_DATA8_6       IB_SA_COMP_MASK(13)
0343 #define IB_SA_SERVICE_REC_SERVICE_DATA8_7       IB_SA_COMP_MASK(14)
0344 #define IB_SA_SERVICE_REC_SERVICE_DATA8_8       IB_SA_COMP_MASK(15)
0345 #define IB_SA_SERVICE_REC_SERVICE_DATA8_9       IB_SA_COMP_MASK(16)
0346 #define IB_SA_SERVICE_REC_SERVICE_DATA8_10      IB_SA_COMP_MASK(17)
0347 #define IB_SA_SERVICE_REC_SERVICE_DATA8_11      IB_SA_COMP_MASK(18)
0348 #define IB_SA_SERVICE_REC_SERVICE_DATA8_12      IB_SA_COMP_MASK(19)
0349 #define IB_SA_SERVICE_REC_SERVICE_DATA8_13      IB_SA_COMP_MASK(20)
0350 #define IB_SA_SERVICE_REC_SERVICE_DATA8_14      IB_SA_COMP_MASK(21)
0351 #define IB_SA_SERVICE_REC_SERVICE_DATA8_15      IB_SA_COMP_MASK(22)
0352 #define IB_SA_SERVICE_REC_SERVICE_DATA16_0      IB_SA_COMP_MASK(23)
0353 #define IB_SA_SERVICE_REC_SERVICE_DATA16_1      IB_SA_COMP_MASK(24)
0354 #define IB_SA_SERVICE_REC_SERVICE_DATA16_2      IB_SA_COMP_MASK(25)
0355 #define IB_SA_SERVICE_REC_SERVICE_DATA16_3      IB_SA_COMP_MASK(26)
0356 #define IB_SA_SERVICE_REC_SERVICE_DATA16_4      IB_SA_COMP_MASK(27)
0357 #define IB_SA_SERVICE_REC_SERVICE_DATA16_5      IB_SA_COMP_MASK(28)
0358 #define IB_SA_SERVICE_REC_SERVICE_DATA16_6      IB_SA_COMP_MASK(29)
0359 #define IB_SA_SERVICE_REC_SERVICE_DATA16_7      IB_SA_COMP_MASK(30)
0360 #define IB_SA_SERVICE_REC_SERVICE_DATA32_0      IB_SA_COMP_MASK(31)
0361 #define IB_SA_SERVICE_REC_SERVICE_DATA32_1      IB_SA_COMP_MASK(32)
0362 #define IB_SA_SERVICE_REC_SERVICE_DATA32_2      IB_SA_COMP_MASK(33)
0363 #define IB_SA_SERVICE_REC_SERVICE_DATA32_3      IB_SA_COMP_MASK(34)
0364 #define IB_SA_SERVICE_REC_SERVICE_DATA64_0      IB_SA_COMP_MASK(35)
0365 #define IB_SA_SERVICE_REC_SERVICE_DATA64_1      IB_SA_COMP_MASK(36)
0366 
0367 #define IB_DEFAULT_SERVICE_LEASE    0xFFFFFFFF
0368 
0369 #define IB_SA_GUIDINFO_REC_LID      IB_SA_COMP_MASK(0)
0370 #define IB_SA_GUIDINFO_REC_BLOCK_NUM    IB_SA_COMP_MASK(1)
0371 #define IB_SA_GUIDINFO_REC_RES1     IB_SA_COMP_MASK(2)
0372 #define IB_SA_GUIDINFO_REC_RES2     IB_SA_COMP_MASK(3)
0373 #define IB_SA_GUIDINFO_REC_GID0     IB_SA_COMP_MASK(4)
0374 #define IB_SA_GUIDINFO_REC_GID1     IB_SA_COMP_MASK(5)
0375 #define IB_SA_GUIDINFO_REC_GID2     IB_SA_COMP_MASK(6)
0376 #define IB_SA_GUIDINFO_REC_GID3     IB_SA_COMP_MASK(7)
0377 #define IB_SA_GUIDINFO_REC_GID4     IB_SA_COMP_MASK(8)
0378 #define IB_SA_GUIDINFO_REC_GID5     IB_SA_COMP_MASK(9)
0379 #define IB_SA_GUIDINFO_REC_GID6     IB_SA_COMP_MASK(10)
0380 #define IB_SA_GUIDINFO_REC_GID7     IB_SA_COMP_MASK(11)
0381 
0382 struct ib_sa_guidinfo_rec {
0383     __be16  lid;
0384     u8  block_num;
0385     /* reserved */
0386     u8  res1;
0387     __be32  res2;
0388     u8  guid_info_list[64];
0389 };
0390 
0391 struct ib_sa_client {
0392     atomic_t users;
0393     struct completion comp;
0394 };
0395 
0396 /**
0397  * ib_sa_register_client - Register an SA client.
0398  */
0399 void ib_sa_register_client(struct ib_sa_client *client);
0400 
0401 /**
0402  * ib_sa_unregister_client - Deregister an SA client.
0403  * @client: Client object to deregister.
0404  */
0405 void ib_sa_unregister_client(struct ib_sa_client *client);
0406 
0407 struct ib_sa_query;
0408 
0409 void ib_sa_cancel_query(int id, struct ib_sa_query *query);
0410 
0411 int ib_sa_path_rec_get(struct ib_sa_client *client, struct ib_device *device,
0412                u32 port_num, struct sa_path_rec *rec,
0413                ib_sa_comp_mask comp_mask, unsigned long timeout_ms,
0414                gfp_t gfp_mask,
0415                void (*callback)(int status, struct sa_path_rec *resp,
0416                     void *context),
0417                void *context, struct ib_sa_query **query);
0418 
0419 struct ib_sa_multicast {
0420     struct ib_sa_mcmember_rec rec;
0421     ib_sa_comp_mask     comp_mask;
0422     int         (*callback)(int status,
0423                         struct ib_sa_multicast *multicast);
0424     void            *context;
0425 };
0426 
0427 /**
0428  * ib_sa_join_multicast - Initiates a join request to the specified multicast
0429  *   group.
0430  * @client: SA client
0431  * @device: Device associated with the multicast group.
0432  * @port_num: Port on the specified device to associate with the multicast
0433  *   group.
0434  * @rec: SA multicast member record specifying group attributes.
0435  * @comp_mask: Component mask indicating which group attributes of %rec are
0436  *   valid.
0437  * @gfp_mask: GFP mask for memory allocations.
0438  * @callback: User callback invoked once the join operation completes.
0439  * @context: User specified context stored with the ib_sa_multicast structure.
0440  *
0441  * This call initiates a multicast join request with the SA for the specified
0442  * multicast group.  If the join operation is started successfully, it returns
0443  * an ib_sa_multicast structure that is used to track the multicast operation.
0444  * Users must free this structure by calling ib_free_multicast, even if the
0445  * join operation later fails.  (The callback status is non-zero.)
0446  *
0447  * If the join operation fails; status will be non-zero, with the following
0448  * failures possible:
0449  * -ETIMEDOUT: The request timed out.
0450  * -EIO: An error occurred sending the query.
0451  * -EINVAL: The MCMemberRecord values differed from the existing group's.
0452  * -ENETRESET: Indicates that an fatal error has occurred on the multicast
0453  *   group, and the user must rejoin the group to continue using it.
0454  */
0455 struct ib_sa_multicast *ib_sa_join_multicast(struct ib_sa_client *client,
0456                          struct ib_device *device,
0457                          u32 port_num,
0458                          struct ib_sa_mcmember_rec *rec,
0459                          ib_sa_comp_mask comp_mask, gfp_t gfp_mask,
0460                          int (*callback)(int status,
0461                                  struct ib_sa_multicast
0462                                     *multicast),
0463                          void *context);
0464 
0465 /**
0466  * ib_free_multicast - Frees the multicast tracking structure, and releases
0467  *    any reference on the multicast group.
0468  * @multicast: Multicast tracking structure allocated by ib_join_multicast.
0469  *
0470  * This call blocks until the multicast identifier is destroyed.  It may
0471  * not be called from within the multicast callback; however, returning a non-
0472  * zero value from the callback will result in destroying the multicast
0473  * tracking structure.
0474  */
0475 void ib_sa_free_multicast(struct ib_sa_multicast *multicast);
0476 
0477 /**
0478  * ib_get_mcmember_rec - Looks up a multicast member record by its MGID and
0479  *   returns it if found.
0480  * @device: Device associated with the multicast group.
0481  * @port_num: Port on the specified device to associate with the multicast
0482  *   group.
0483  * @mgid: MGID of multicast group.
0484  * @rec: Location to copy SA multicast member record.
0485  */
0486 int ib_sa_get_mcmember_rec(struct ib_device *device, u32 port_num,
0487                union ib_gid *mgid, struct ib_sa_mcmember_rec *rec);
0488 
0489 /**
0490  * ib_init_ah_from_mcmember - Initialize address handle attributes based on
0491  * an SA multicast member record.
0492  */
0493 int ib_init_ah_from_mcmember(struct ib_device *device, u32 port_num,
0494                  struct ib_sa_mcmember_rec *rec,
0495                  struct net_device *ndev,
0496                  enum ib_gid_type gid_type,
0497                  struct rdma_ah_attr *ah_attr);
0498 
0499 int ib_init_ah_attr_from_path(struct ib_device *device, u32 port_num,
0500                   struct sa_path_rec *rec,
0501                   struct rdma_ah_attr *ah_attr,
0502                   const struct ib_gid_attr *sgid_attr);
0503 
0504 /**
0505  * ib_sa_pack_path - Conert a path record from struct ib_sa_path_rec
0506  * to IB MAD wire format.
0507  */
0508 void ib_sa_pack_path(struct sa_path_rec *rec, void *attribute);
0509 
0510 /**
0511  * ib_sa_unpack_path - Convert a path record from MAD format to struct
0512  * ib_sa_path_rec.
0513  */
0514 void ib_sa_unpack_path(void *attribute, struct sa_path_rec *rec);
0515 
0516 /* Support GuidInfoRecord */
0517 int ib_sa_guid_info_rec_query(struct ib_sa_client *client,
0518                   struct ib_device *device, u32 port_num,
0519                   struct ib_sa_guidinfo_rec *rec,
0520                   ib_sa_comp_mask comp_mask, u8 method,
0521                   unsigned long timeout_ms, gfp_t gfp_mask,
0522                   void (*callback)(int status,
0523                            struct ib_sa_guidinfo_rec *resp,
0524                            void *context),
0525                   void *context, struct ib_sa_query **sa_query);
0526 
0527 static inline bool sa_path_is_roce(struct sa_path_rec *rec)
0528 {
0529     return ((rec->rec_type == SA_PATH_REC_TYPE_ROCE_V1) ||
0530         (rec->rec_type == SA_PATH_REC_TYPE_ROCE_V2));
0531 }
0532 
0533 static inline bool sa_path_is_opa(struct sa_path_rec *rec)
0534 {
0535     return (rec->rec_type == SA_PATH_REC_TYPE_OPA);
0536 }
0537 
0538 static inline void sa_path_set_slid(struct sa_path_rec *rec, u32 slid)
0539 {
0540     if (rec->rec_type == SA_PATH_REC_TYPE_IB)
0541         rec->ib.slid = cpu_to_be16(slid);
0542     else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
0543         rec->opa.slid = cpu_to_be32(slid);
0544 }
0545 
0546 static inline void sa_path_set_dlid(struct sa_path_rec *rec, u32 dlid)
0547 {
0548     if (rec->rec_type == SA_PATH_REC_TYPE_IB)
0549         rec->ib.dlid = cpu_to_be16(dlid);
0550     else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
0551         rec->opa.dlid = cpu_to_be32(dlid);
0552 }
0553 
0554 static inline void sa_path_set_raw_traffic(struct sa_path_rec *rec,
0555                        u8 raw_traffic)
0556 {
0557     if (rec->rec_type == SA_PATH_REC_TYPE_IB)
0558         rec->ib.raw_traffic = raw_traffic;
0559     else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
0560         rec->opa.raw_traffic = raw_traffic;
0561 }
0562 
0563 static inline __be32 sa_path_get_slid(struct sa_path_rec *rec)
0564 {
0565     if (rec->rec_type == SA_PATH_REC_TYPE_IB)
0566         return htonl(ntohs(rec->ib.slid));
0567     else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
0568         return rec->opa.slid;
0569     return 0;
0570 }
0571 
0572 static inline __be32 sa_path_get_dlid(struct sa_path_rec *rec)
0573 {
0574     if (rec->rec_type == SA_PATH_REC_TYPE_IB)
0575         return htonl(ntohs(rec->ib.dlid));
0576     else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
0577         return rec->opa.dlid;
0578     return 0;
0579 }
0580 
0581 static inline u8 sa_path_get_raw_traffic(struct sa_path_rec *rec)
0582 {
0583     if (rec->rec_type == SA_PATH_REC_TYPE_IB)
0584         return rec->ib.raw_traffic;
0585     else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
0586         return rec->opa.raw_traffic;
0587     return 0;
0588 }
0589 
0590 static inline void sa_path_set_dmac(struct sa_path_rec *rec, u8 *dmac)
0591 {
0592     if (sa_path_is_roce(rec))
0593         memcpy(rec->roce.dmac, dmac, ETH_ALEN);
0594 }
0595 
0596 static inline void sa_path_set_dmac_zero(struct sa_path_rec *rec)
0597 {
0598     if (sa_path_is_roce(rec))
0599         eth_zero_addr(rec->roce.dmac);
0600 }
0601 
0602 static inline u8 *sa_path_get_dmac(struct sa_path_rec *rec)
0603 {
0604     if (sa_path_is_roce(rec))
0605         return rec->roce.dmac;
0606     return NULL;
0607 }
0608 #endif /* IB_SA_H */
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