ib_sa.h 20 KB

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  1. /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
  2. /*
  3. * Copyright (c) 2004 Topspin Communications. All rights reserved.
  4. * Copyright (c) 2005 Voltaire, Inc. All rights reserved.
  5. * Copyright (c) 2006 Intel Corporation. All rights reserved.
  6. */
  7. #ifndef IB_SA_H
  8. #define IB_SA_H
  9. #include <linux/completion.h>
  10. #include <linux/compiler.h>
  11. #include <linux/atomic.h>
  12. #include <linux/netdevice.h>
  13. #include <rdma/ib_verbs.h>
  14. #include <rdma/ib_mad.h>
  15. #include <rdma/ib_addr.h>
  16. #include <rdma/opa_addr.h>
  17. enum {
  18. IB_SA_CLASS_VERSION = 2, /* IB spec version 1.1/1.2 */
  19. IB_SA_METHOD_GET_TABLE = 0x12,
  20. IB_SA_METHOD_GET_TABLE_RESP = 0x92,
  21. IB_SA_METHOD_DELETE = 0x15,
  22. IB_SA_METHOD_DELETE_RESP = 0x95,
  23. IB_SA_METHOD_GET_MULTI = 0x14,
  24. IB_SA_METHOD_GET_MULTI_RESP = 0x94,
  25. IB_SA_METHOD_GET_TRACE_TBL = 0x13
  26. };
  27. #define OPA_SA_CLASS_VERSION 0x80
  28. enum {
  29. IB_SA_ATTR_CLASS_PORTINFO = 0x01,
  30. IB_SA_ATTR_NOTICE = 0x02,
  31. IB_SA_ATTR_INFORM_INFO = 0x03,
  32. IB_SA_ATTR_NODE_REC = 0x11,
  33. IB_SA_ATTR_PORT_INFO_REC = 0x12,
  34. IB_SA_ATTR_SL2VL_REC = 0x13,
  35. IB_SA_ATTR_SWITCH_REC = 0x14,
  36. IB_SA_ATTR_LINEAR_FDB_REC = 0x15,
  37. IB_SA_ATTR_RANDOM_FDB_REC = 0x16,
  38. IB_SA_ATTR_MCAST_FDB_REC = 0x17,
  39. IB_SA_ATTR_SM_INFO_REC = 0x18,
  40. IB_SA_ATTR_LINK_REC = 0x20,
  41. IB_SA_ATTR_GUID_INFO_REC = 0x30,
  42. IB_SA_ATTR_SERVICE_REC = 0x31,
  43. IB_SA_ATTR_PARTITION_REC = 0x33,
  44. IB_SA_ATTR_PATH_REC = 0x35,
  45. IB_SA_ATTR_VL_ARB_REC = 0x36,
  46. IB_SA_ATTR_MC_MEMBER_REC = 0x38,
  47. IB_SA_ATTR_TRACE_REC = 0x39,
  48. IB_SA_ATTR_MULTI_PATH_REC = 0x3a,
  49. IB_SA_ATTR_SERVICE_ASSOC_REC = 0x3b,
  50. IB_SA_ATTR_INFORM_INFO_REC = 0xf3
  51. };
  52. enum ib_sa_selector {
  53. IB_SA_GT = 0,
  54. IB_SA_LT = 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. * There are 4 types of join states:
  66. * FullMember, NonMember, SendOnlyNonMember, SendOnlyFullMember.
  67. * The order corresponds to JoinState bits in MCMemberRecord.
  68. */
  69. enum ib_sa_mc_join_states {
  70. FULLMEMBER_JOIN,
  71. NONMEMBER_JOIN,
  72. SENDONLY_NONMEBER_JOIN,
  73. SENDONLY_FULLMEMBER_JOIN,
  74. NUM_JOIN_MEMBERSHIP_TYPES,
  75. };
  76. #define IB_SA_CAP_MASK2_SENDONLY_FULL_MEM_SUPPORT BIT(12)
  77. /*
  78. * Structures for SA records are named "struct ib_sa_xxx_rec." No
  79. * attempt is made to pack structures to match the physical layout of
  80. * SA records in SA MADs; all packing and unpacking is handled by the
  81. * SA query code.
  82. *
  83. * For a record with structure ib_sa_xxx_rec, the naming convention
  84. * for the component mask value for field yyy is IB_SA_XXX_REC_YYY (we
  85. * never use different abbreviations or otherwise change the spelling
  86. * of xxx/yyy between ib_sa_xxx_rec.yyy and IB_SA_XXX_REC_YYY).
  87. *
  88. * Reserved rows are indicated with comments to help maintainability.
  89. */
  90. #define IB_SA_PATH_REC_SERVICE_ID (IB_SA_COMP_MASK( 0) |\
  91. IB_SA_COMP_MASK( 1))
  92. #define IB_SA_PATH_REC_DGID IB_SA_COMP_MASK( 2)
  93. #define IB_SA_PATH_REC_SGID IB_SA_COMP_MASK( 3)
  94. #define IB_SA_PATH_REC_DLID IB_SA_COMP_MASK( 4)
  95. #define IB_SA_PATH_REC_SLID IB_SA_COMP_MASK( 5)
  96. #define IB_SA_PATH_REC_RAW_TRAFFIC IB_SA_COMP_MASK( 6)
  97. /* reserved: 7 */
  98. #define IB_SA_PATH_REC_FLOW_LABEL IB_SA_COMP_MASK( 8)
  99. #define IB_SA_PATH_REC_HOP_LIMIT IB_SA_COMP_MASK( 9)
  100. #define IB_SA_PATH_REC_TRAFFIC_CLASS IB_SA_COMP_MASK(10)
  101. #define IB_SA_PATH_REC_REVERSIBLE IB_SA_COMP_MASK(11)
  102. #define IB_SA_PATH_REC_NUMB_PATH IB_SA_COMP_MASK(12)
  103. #define IB_SA_PATH_REC_PKEY IB_SA_COMP_MASK(13)
  104. #define IB_SA_PATH_REC_QOS_CLASS IB_SA_COMP_MASK(14)
  105. #define IB_SA_PATH_REC_SL IB_SA_COMP_MASK(15)
  106. #define IB_SA_PATH_REC_MTU_SELECTOR IB_SA_COMP_MASK(16)
  107. #define IB_SA_PATH_REC_MTU IB_SA_COMP_MASK(17)
  108. #define IB_SA_PATH_REC_RATE_SELECTOR IB_SA_COMP_MASK(18)
  109. #define IB_SA_PATH_REC_RATE IB_SA_COMP_MASK(19)
  110. #define IB_SA_PATH_REC_PACKET_LIFE_TIME_SELECTOR IB_SA_COMP_MASK(20)
  111. #define IB_SA_PATH_REC_PACKET_LIFE_TIME IB_SA_COMP_MASK(21)
  112. #define IB_SA_PATH_REC_PREFERENCE IB_SA_COMP_MASK(22)
  113. enum sa_path_rec_type {
  114. SA_PATH_REC_TYPE_IB,
  115. SA_PATH_REC_TYPE_ROCE_V1,
  116. SA_PATH_REC_TYPE_ROCE_V2,
  117. SA_PATH_REC_TYPE_OPA
  118. };
  119. struct sa_path_rec_ib {
  120. __be16 dlid;
  121. __be16 slid;
  122. u8 raw_traffic;
  123. };
  124. /**
  125. * struct sa_path_rec_roce - RoCE specific portion of the path record entry
  126. * @route_resolved: When set, it indicates that this route is already
  127. * resolved for this path record entry.
  128. * @dmac: Destination mac address for the given DGID entry
  129. * of the path record entry.
  130. */
  131. struct sa_path_rec_roce {
  132. bool route_resolved;
  133. u8 dmac[ETH_ALEN];
  134. };
  135. struct sa_path_rec_opa {
  136. __be32 dlid;
  137. __be32 slid;
  138. u8 raw_traffic;
  139. u8 l2_8B;
  140. u8 l2_10B;
  141. u8 l2_9B;
  142. u8 l2_16B;
  143. u8 qos_type;
  144. u8 qos_priority;
  145. };
  146. struct sa_path_rec {
  147. union ib_gid dgid;
  148. union ib_gid sgid;
  149. __be64 service_id;
  150. /* reserved */
  151. __be32 flow_label;
  152. u8 hop_limit;
  153. u8 traffic_class;
  154. u8 reversible;
  155. u8 numb_path;
  156. __be16 pkey;
  157. __be16 qos_class;
  158. u8 sl;
  159. u8 mtu_selector;
  160. u8 mtu;
  161. u8 rate_selector;
  162. u8 rate;
  163. u8 packet_life_time_selector;
  164. u8 packet_life_time;
  165. u8 preference;
  166. union {
  167. struct sa_path_rec_ib ib;
  168. struct sa_path_rec_roce roce;
  169. struct sa_path_rec_opa opa;
  170. };
  171. enum sa_path_rec_type rec_type;
  172. };
  173. static inline enum ib_gid_type
  174. sa_conv_pathrec_to_gid_type(struct sa_path_rec *rec)
  175. {
  176. switch (rec->rec_type) {
  177. case SA_PATH_REC_TYPE_ROCE_V1:
  178. return IB_GID_TYPE_ROCE;
  179. case SA_PATH_REC_TYPE_ROCE_V2:
  180. return IB_GID_TYPE_ROCE_UDP_ENCAP;
  181. default:
  182. return IB_GID_TYPE_IB;
  183. }
  184. }
  185. static inline enum sa_path_rec_type
  186. sa_conv_gid_to_pathrec_type(enum ib_gid_type type)
  187. {
  188. switch (type) {
  189. case IB_GID_TYPE_ROCE:
  190. return SA_PATH_REC_TYPE_ROCE_V1;
  191. case IB_GID_TYPE_ROCE_UDP_ENCAP:
  192. return SA_PATH_REC_TYPE_ROCE_V2;
  193. default:
  194. return SA_PATH_REC_TYPE_IB;
  195. }
  196. }
  197. static inline void path_conv_opa_to_ib(struct sa_path_rec *ib,
  198. struct sa_path_rec *opa)
  199. {
  200. if ((be32_to_cpu(opa->opa.dlid) >=
  201. be16_to_cpu(IB_MULTICAST_LID_BASE)) ||
  202. (be32_to_cpu(opa->opa.slid) >=
  203. be16_to_cpu(IB_MULTICAST_LID_BASE))) {
  204. /* Create OPA GID and zero out the LID */
  205. ib->dgid.global.interface_id
  206. = OPA_MAKE_ID(be32_to_cpu(opa->opa.dlid));
  207. ib->dgid.global.subnet_prefix
  208. = opa->dgid.global.subnet_prefix;
  209. ib->sgid.global.interface_id
  210. = OPA_MAKE_ID(be32_to_cpu(opa->opa.slid));
  211. ib->dgid.global.subnet_prefix
  212. = opa->dgid.global.subnet_prefix;
  213. ib->ib.dlid = 0;
  214. ib->ib.slid = 0;
  215. } else {
  216. ib->ib.dlid = htons(ntohl(opa->opa.dlid));
  217. ib->ib.slid = htons(ntohl(opa->opa.slid));
  218. }
  219. ib->service_id = opa->service_id;
  220. ib->ib.raw_traffic = opa->opa.raw_traffic;
  221. }
  222. static inline void path_conv_ib_to_opa(struct sa_path_rec *opa,
  223. struct sa_path_rec *ib)
  224. {
  225. __be32 slid, dlid;
  226. if ((ib_is_opa_gid(&ib->sgid)) ||
  227. (ib_is_opa_gid(&ib->dgid))) {
  228. slid = htonl(opa_get_lid_from_gid(&ib->sgid));
  229. dlid = htonl(opa_get_lid_from_gid(&ib->dgid));
  230. } else {
  231. slid = htonl(ntohs(ib->ib.slid));
  232. dlid = htonl(ntohs(ib->ib.dlid));
  233. }
  234. opa->opa.slid = slid;
  235. opa->opa.dlid = dlid;
  236. opa->service_id = ib->service_id;
  237. opa->opa.raw_traffic = ib->ib.raw_traffic;
  238. }
  239. /* Convert from OPA to IB path record */
  240. static inline void sa_convert_path_opa_to_ib(struct sa_path_rec *dest,
  241. struct sa_path_rec *src)
  242. {
  243. if (src->rec_type != SA_PATH_REC_TYPE_OPA)
  244. return;
  245. *dest = *src;
  246. dest->rec_type = SA_PATH_REC_TYPE_IB;
  247. path_conv_opa_to_ib(dest, src);
  248. }
  249. /* Convert from IB to OPA path record */
  250. static inline void sa_convert_path_ib_to_opa(struct sa_path_rec *dest,
  251. struct sa_path_rec *src)
  252. {
  253. if (src->rec_type != SA_PATH_REC_TYPE_IB)
  254. return;
  255. /* Do a structure copy and overwrite the relevant fields */
  256. *dest = *src;
  257. dest->rec_type = SA_PATH_REC_TYPE_OPA;
  258. path_conv_ib_to_opa(dest, src);
  259. }
  260. #define IB_SA_MCMEMBER_REC_MGID IB_SA_COMP_MASK( 0)
  261. #define IB_SA_MCMEMBER_REC_PORT_GID IB_SA_COMP_MASK( 1)
  262. #define IB_SA_MCMEMBER_REC_QKEY IB_SA_COMP_MASK( 2)
  263. #define IB_SA_MCMEMBER_REC_MLID IB_SA_COMP_MASK( 3)
  264. #define IB_SA_MCMEMBER_REC_MTU_SELECTOR IB_SA_COMP_MASK( 4)
  265. #define IB_SA_MCMEMBER_REC_MTU IB_SA_COMP_MASK( 5)
  266. #define IB_SA_MCMEMBER_REC_TRAFFIC_CLASS IB_SA_COMP_MASK( 6)
  267. #define IB_SA_MCMEMBER_REC_PKEY IB_SA_COMP_MASK( 7)
  268. #define IB_SA_MCMEMBER_REC_RATE_SELECTOR IB_SA_COMP_MASK( 8)
  269. #define IB_SA_MCMEMBER_REC_RATE IB_SA_COMP_MASK( 9)
  270. #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR IB_SA_COMP_MASK(10)
  271. #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME IB_SA_COMP_MASK(11)
  272. #define IB_SA_MCMEMBER_REC_SL IB_SA_COMP_MASK(12)
  273. #define IB_SA_MCMEMBER_REC_FLOW_LABEL IB_SA_COMP_MASK(13)
  274. #define IB_SA_MCMEMBER_REC_HOP_LIMIT IB_SA_COMP_MASK(14)
  275. #define IB_SA_MCMEMBER_REC_SCOPE IB_SA_COMP_MASK(15)
  276. #define IB_SA_MCMEMBER_REC_JOIN_STATE IB_SA_COMP_MASK(16)
  277. #define IB_SA_MCMEMBER_REC_PROXY_JOIN IB_SA_COMP_MASK(17)
  278. struct ib_sa_mcmember_rec {
  279. union ib_gid mgid;
  280. union ib_gid port_gid;
  281. __be32 qkey;
  282. __be16 mlid;
  283. u8 mtu_selector;
  284. u8 mtu;
  285. u8 traffic_class;
  286. __be16 pkey;
  287. u8 rate_selector;
  288. u8 rate;
  289. u8 packet_life_time_selector;
  290. u8 packet_life_time;
  291. u8 sl;
  292. __be32 flow_label;
  293. u8 hop_limit;
  294. u8 scope;
  295. u8 join_state;
  296. u8 proxy_join;
  297. };
  298. /* Service Record Component Mask Sec 15.2.5.14 Ver 1.1 */
  299. #define IB_SA_SERVICE_REC_SERVICE_ID IB_SA_COMP_MASK( 0)
  300. #define IB_SA_SERVICE_REC_SERVICE_GID IB_SA_COMP_MASK( 1)
  301. #define IB_SA_SERVICE_REC_SERVICE_PKEY IB_SA_COMP_MASK( 2)
  302. /* reserved: 3 */
  303. #define IB_SA_SERVICE_REC_SERVICE_LEASE IB_SA_COMP_MASK( 4)
  304. #define IB_SA_SERVICE_REC_SERVICE_KEY IB_SA_COMP_MASK( 5)
  305. #define IB_SA_SERVICE_REC_SERVICE_NAME IB_SA_COMP_MASK( 6)
  306. #define IB_SA_SERVICE_REC_SERVICE_DATA8_0 IB_SA_COMP_MASK( 7)
  307. #define IB_SA_SERVICE_REC_SERVICE_DATA8_1 IB_SA_COMP_MASK( 8)
  308. #define IB_SA_SERVICE_REC_SERVICE_DATA8_2 IB_SA_COMP_MASK( 9)
  309. #define IB_SA_SERVICE_REC_SERVICE_DATA8_3 IB_SA_COMP_MASK(10)
  310. #define IB_SA_SERVICE_REC_SERVICE_DATA8_4 IB_SA_COMP_MASK(11)
  311. #define IB_SA_SERVICE_REC_SERVICE_DATA8_5 IB_SA_COMP_MASK(12)
  312. #define IB_SA_SERVICE_REC_SERVICE_DATA8_6 IB_SA_COMP_MASK(13)
  313. #define IB_SA_SERVICE_REC_SERVICE_DATA8_7 IB_SA_COMP_MASK(14)
  314. #define IB_SA_SERVICE_REC_SERVICE_DATA8_8 IB_SA_COMP_MASK(15)
  315. #define IB_SA_SERVICE_REC_SERVICE_DATA8_9 IB_SA_COMP_MASK(16)
  316. #define IB_SA_SERVICE_REC_SERVICE_DATA8_10 IB_SA_COMP_MASK(17)
  317. #define IB_SA_SERVICE_REC_SERVICE_DATA8_11 IB_SA_COMP_MASK(18)
  318. #define IB_SA_SERVICE_REC_SERVICE_DATA8_12 IB_SA_COMP_MASK(19)
  319. #define IB_SA_SERVICE_REC_SERVICE_DATA8_13 IB_SA_COMP_MASK(20)
  320. #define IB_SA_SERVICE_REC_SERVICE_DATA8_14 IB_SA_COMP_MASK(21)
  321. #define IB_SA_SERVICE_REC_SERVICE_DATA8_15 IB_SA_COMP_MASK(22)
  322. #define IB_SA_SERVICE_REC_SERVICE_DATA16_0 IB_SA_COMP_MASK(23)
  323. #define IB_SA_SERVICE_REC_SERVICE_DATA16_1 IB_SA_COMP_MASK(24)
  324. #define IB_SA_SERVICE_REC_SERVICE_DATA16_2 IB_SA_COMP_MASK(25)
  325. #define IB_SA_SERVICE_REC_SERVICE_DATA16_3 IB_SA_COMP_MASK(26)
  326. #define IB_SA_SERVICE_REC_SERVICE_DATA16_4 IB_SA_COMP_MASK(27)
  327. #define IB_SA_SERVICE_REC_SERVICE_DATA16_5 IB_SA_COMP_MASK(28)
  328. #define IB_SA_SERVICE_REC_SERVICE_DATA16_6 IB_SA_COMP_MASK(29)
  329. #define IB_SA_SERVICE_REC_SERVICE_DATA16_7 IB_SA_COMP_MASK(30)
  330. #define IB_SA_SERVICE_REC_SERVICE_DATA32_0 IB_SA_COMP_MASK(31)
  331. #define IB_SA_SERVICE_REC_SERVICE_DATA32_1 IB_SA_COMP_MASK(32)
  332. #define IB_SA_SERVICE_REC_SERVICE_DATA32_2 IB_SA_COMP_MASK(33)
  333. #define IB_SA_SERVICE_REC_SERVICE_DATA32_3 IB_SA_COMP_MASK(34)
  334. #define IB_SA_SERVICE_REC_SERVICE_DATA64_0 IB_SA_COMP_MASK(35)
  335. #define IB_SA_SERVICE_REC_SERVICE_DATA64_1 IB_SA_COMP_MASK(36)
  336. #define IB_DEFAULT_SERVICE_LEASE 0xFFFFFFFF
  337. struct ib_sa_service_rec {
  338. u64 id;
  339. union ib_gid gid;
  340. __be16 pkey;
  341. /* reserved */
  342. u32 lease;
  343. u8 key[16];
  344. u8 name[64];
  345. u8 data8[16];
  346. u16 data16[8];
  347. u32 data32[4];
  348. u64 data64[2];
  349. };
  350. #define IB_SA_GUIDINFO_REC_LID IB_SA_COMP_MASK(0)
  351. #define IB_SA_GUIDINFO_REC_BLOCK_NUM IB_SA_COMP_MASK(1)
  352. #define IB_SA_GUIDINFO_REC_RES1 IB_SA_COMP_MASK(2)
  353. #define IB_SA_GUIDINFO_REC_RES2 IB_SA_COMP_MASK(3)
  354. #define IB_SA_GUIDINFO_REC_GID0 IB_SA_COMP_MASK(4)
  355. #define IB_SA_GUIDINFO_REC_GID1 IB_SA_COMP_MASK(5)
  356. #define IB_SA_GUIDINFO_REC_GID2 IB_SA_COMP_MASK(6)
  357. #define IB_SA_GUIDINFO_REC_GID3 IB_SA_COMP_MASK(7)
  358. #define IB_SA_GUIDINFO_REC_GID4 IB_SA_COMP_MASK(8)
  359. #define IB_SA_GUIDINFO_REC_GID5 IB_SA_COMP_MASK(9)
  360. #define IB_SA_GUIDINFO_REC_GID6 IB_SA_COMP_MASK(10)
  361. #define IB_SA_GUIDINFO_REC_GID7 IB_SA_COMP_MASK(11)
  362. struct ib_sa_guidinfo_rec {
  363. __be16 lid;
  364. u8 block_num;
  365. /* reserved */
  366. u8 res1;
  367. __be32 res2;
  368. u8 guid_info_list[64];
  369. };
  370. struct ib_sa_client {
  371. atomic_t users;
  372. struct completion comp;
  373. };
  374. /**
  375. * ib_sa_register_client - Register an SA client.
  376. */
  377. void ib_sa_register_client(struct ib_sa_client *client);
  378. /**
  379. * ib_sa_unregister_client - Deregister an SA client.
  380. * @client: Client object to deregister.
  381. */
  382. void ib_sa_unregister_client(struct ib_sa_client *client);
  383. struct ib_sa_query;
  384. void ib_sa_cancel_query(int id, struct ib_sa_query *query);
  385. int ib_sa_path_rec_get(struct ib_sa_client *client, struct ib_device *device,
  386. u8 port_num, struct sa_path_rec *rec,
  387. ib_sa_comp_mask comp_mask, unsigned long timeout_ms,
  388. gfp_t gfp_mask,
  389. void (*callback)(int status, struct sa_path_rec *resp,
  390. void *context),
  391. void *context, struct ib_sa_query **query);
  392. int ib_sa_service_rec_query(struct ib_sa_client *client,
  393. struct ib_device *device, u8 port_num, u8 method,
  394. struct ib_sa_service_rec *rec,
  395. ib_sa_comp_mask comp_mask, unsigned long timeout_ms,
  396. gfp_t gfp_mask,
  397. void (*callback)(int status,
  398. struct ib_sa_service_rec *resp,
  399. void *context),
  400. void *context, struct ib_sa_query **sa_query);
  401. struct ib_sa_multicast {
  402. struct ib_sa_mcmember_rec rec;
  403. ib_sa_comp_mask comp_mask;
  404. int (*callback)(int status,
  405. struct ib_sa_multicast *multicast);
  406. void *context;
  407. };
  408. /**
  409. * ib_sa_join_multicast - Initiates a join request to the specified multicast
  410. * group.
  411. * @client: SA client
  412. * @device: Device associated with the multicast group.
  413. * @port_num: Port on the specified device to associate with the multicast
  414. * group.
  415. * @rec: SA multicast member record specifying group attributes.
  416. * @comp_mask: Component mask indicating which group attributes of %rec are
  417. * valid.
  418. * @gfp_mask: GFP mask for memory allocations.
  419. * @callback: User callback invoked once the join operation completes.
  420. * @context: User specified context stored with the ib_sa_multicast structure.
  421. *
  422. * This call initiates a multicast join request with the SA for the specified
  423. * multicast group. If the join operation is started successfully, it returns
  424. * an ib_sa_multicast structure that is used to track the multicast operation.
  425. * Users must free this structure by calling ib_free_multicast, even if the
  426. * join operation later fails. (The callback status is non-zero.)
  427. *
  428. * If the join operation fails; status will be non-zero, with the following
  429. * failures possible:
  430. * -ETIMEDOUT: The request timed out.
  431. * -EIO: An error occurred sending the query.
  432. * -EINVAL: The MCMemberRecord values differed from the existing group's.
  433. * -ENETRESET: Indicates that an fatal error has occurred on the multicast
  434. * group, and the user must rejoin the group to continue using it.
  435. */
  436. struct ib_sa_multicast *ib_sa_join_multicast(struct ib_sa_client *client,
  437. struct ib_device *device, u8 port_num,
  438. struct ib_sa_mcmember_rec *rec,
  439. ib_sa_comp_mask comp_mask, gfp_t gfp_mask,
  440. int (*callback)(int status,
  441. struct ib_sa_multicast
  442. *multicast),
  443. void *context);
  444. /**
  445. * ib_free_multicast - Frees the multicast tracking structure, and releases
  446. * any reference on the multicast group.
  447. * @multicast: Multicast tracking structure allocated by ib_join_multicast.
  448. *
  449. * This call blocks until the multicast identifier is destroyed. It may
  450. * not be called from within the multicast callback; however, returning a non-
  451. * zero value from the callback will result in destroying the multicast
  452. * tracking structure.
  453. */
  454. void ib_sa_free_multicast(struct ib_sa_multicast *multicast);
  455. /**
  456. * ib_get_mcmember_rec - Looks up a multicast member record by its MGID and
  457. * returns it if found.
  458. * @device: Device associated with the multicast group.
  459. * @port_num: Port on the specified device to associate with the multicast
  460. * group.
  461. * @mgid: MGID of multicast group.
  462. * @rec: Location to copy SA multicast member record.
  463. */
  464. int ib_sa_get_mcmember_rec(struct ib_device *device, u8 port_num,
  465. union ib_gid *mgid, struct ib_sa_mcmember_rec *rec);
  466. /**
  467. * ib_init_ah_from_mcmember - Initialize address handle attributes based on
  468. * an SA multicast member record.
  469. */
  470. int ib_init_ah_from_mcmember(struct ib_device *device, u8 port_num,
  471. struct ib_sa_mcmember_rec *rec,
  472. struct net_device *ndev,
  473. enum ib_gid_type gid_type,
  474. struct rdma_ah_attr *ah_attr);
  475. int ib_init_ah_attr_from_path(struct ib_device *device, u8 port_num,
  476. struct sa_path_rec *rec,
  477. struct rdma_ah_attr *ah_attr,
  478. const struct ib_gid_attr *sgid_attr);
  479. /**
  480. * ib_sa_pack_path - Conert a path record from struct ib_sa_path_rec
  481. * to IB MAD wire format.
  482. */
  483. void ib_sa_pack_path(struct sa_path_rec *rec, void *attribute);
  484. /**
  485. * ib_sa_unpack_path - Convert a path record from MAD format to struct
  486. * ib_sa_path_rec.
  487. */
  488. void ib_sa_unpack_path(void *attribute, struct sa_path_rec *rec);
  489. /* Support GuidInfoRecord */
  490. int ib_sa_guid_info_rec_query(struct ib_sa_client *client,
  491. struct ib_device *device, u8 port_num,
  492. struct ib_sa_guidinfo_rec *rec,
  493. ib_sa_comp_mask comp_mask, u8 method,
  494. unsigned long timeout_ms, gfp_t gfp_mask,
  495. void (*callback)(int status,
  496. struct ib_sa_guidinfo_rec *resp,
  497. void *context),
  498. void *context, struct ib_sa_query **sa_query);
  499. bool ib_sa_sendonly_fullmem_support(struct ib_sa_client *client,
  500. struct ib_device *device,
  501. u8 port_num);
  502. static inline bool sa_path_is_roce(struct sa_path_rec *rec)
  503. {
  504. return ((rec->rec_type == SA_PATH_REC_TYPE_ROCE_V1) ||
  505. (rec->rec_type == SA_PATH_REC_TYPE_ROCE_V2));
  506. }
  507. static inline bool sa_path_is_opa(struct sa_path_rec *rec)
  508. {
  509. return (rec->rec_type == SA_PATH_REC_TYPE_OPA);
  510. }
  511. static inline void sa_path_set_slid(struct sa_path_rec *rec, u32 slid)
  512. {
  513. if (rec->rec_type == SA_PATH_REC_TYPE_IB)
  514. rec->ib.slid = cpu_to_be16(slid);
  515. else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
  516. rec->opa.slid = cpu_to_be32(slid);
  517. }
  518. static inline void sa_path_set_dlid(struct sa_path_rec *rec, u32 dlid)
  519. {
  520. if (rec->rec_type == SA_PATH_REC_TYPE_IB)
  521. rec->ib.dlid = cpu_to_be16(dlid);
  522. else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
  523. rec->opa.dlid = cpu_to_be32(dlid);
  524. }
  525. static inline void sa_path_set_raw_traffic(struct sa_path_rec *rec,
  526. u8 raw_traffic)
  527. {
  528. if (rec->rec_type == SA_PATH_REC_TYPE_IB)
  529. rec->ib.raw_traffic = raw_traffic;
  530. else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
  531. rec->opa.raw_traffic = raw_traffic;
  532. }
  533. static inline __be32 sa_path_get_slid(struct sa_path_rec *rec)
  534. {
  535. if (rec->rec_type == SA_PATH_REC_TYPE_IB)
  536. return htonl(ntohs(rec->ib.slid));
  537. else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
  538. return rec->opa.slid;
  539. return 0;
  540. }
  541. static inline __be32 sa_path_get_dlid(struct sa_path_rec *rec)
  542. {
  543. if (rec->rec_type == SA_PATH_REC_TYPE_IB)
  544. return htonl(ntohs(rec->ib.dlid));
  545. else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
  546. return rec->opa.dlid;
  547. return 0;
  548. }
  549. static inline u8 sa_path_get_raw_traffic(struct sa_path_rec *rec)
  550. {
  551. if (rec->rec_type == SA_PATH_REC_TYPE_IB)
  552. return rec->ib.raw_traffic;
  553. else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
  554. return rec->opa.raw_traffic;
  555. return 0;
  556. }
  557. static inline void sa_path_set_dmac(struct sa_path_rec *rec, u8 *dmac)
  558. {
  559. if (sa_path_is_roce(rec))
  560. memcpy(rec->roce.dmac, dmac, ETH_ALEN);
  561. }
  562. static inline void sa_path_set_dmac_zero(struct sa_path_rec *rec)
  563. {
  564. if (sa_path_is_roce(rec))
  565. eth_zero_addr(rec->roce.dmac);
  566. }
  567. static inline u8 *sa_path_get_dmac(struct sa_path_rec *rec)
  568. {
  569. if (sa_path_is_roce(rec))
  570. return rec->roce.dmac;
  571. return NULL;
  572. }
  573. #endif /* IB_SA_H */