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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
[linux-2.6-block.git] / include / rdma / ib_sa.h
CommitLineData
1da177e4
LT		 1/*
2 * Copyright (c) 2004 Topspin Communications. All rights reserved.
cbae32c5 3 * Copyright (c) 2005 Voltaire, Inc. All rights reserved.
c1a0b23b 4 * Copyright (c) 2006 Intel Corporation. All rights reserved.
1da177e4
LT		 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.
1da177e4
LT		 33 */
34
35#ifndef IB_SA_H
36#define IB_SA_H
37
c1a0b23b 38#include <linux/completion.h>
1da177e4
LT		 39#include <linux/compiler.h>
40
60063497 41#include <linux/atomic.h>
ba36e37f 42#include <linux/netdevice.h>
c1a0b23b 43
a4d61e84
RD		 44#include <rdma/ib_verbs.h>
45#include <rdma/ib_mad.h>
9fdca4da 46#include <rdma/ib_addr.h>
57520751 47#include <rdma/opa_addr.h>
1da177e4
LT		 48
49enum {
cbae32c5 50 IB_SA_CLASS_VERSION = 2, /* IB spec version 1.1/1.2 */
1da177e4 51
cbae32c5
HR		 52 IB_SA_METHOD_GET_TABLE = 0x12,
53 IB_SA_METHOD_GET_TABLE_RESP = 0x92,
1325cc79
HR		 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
1da177e4
LT		 59};
60
2196f271 61#define OPA_SA_CLASS_VERSION 0x80
fbed8eee
HR		 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
1da177e4 87enum ib_sa_selector {
aec79fcc
MT		 88 IB_SA_GT = 0,
89 IB_SA_LT = 1,
1da177e4
LT		 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
ab15c95a
AV		 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
628e6f75
ES		 113#define IB_SA_CAP_MASK2_SENDONLY_FULL_MEM_SUPPORT BIT(12)
114
1da177e4
LT		 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
733d65fe
SH		 129#define IB_SA_PATH_REC_SERVICE_ID (IB_SA_COMP_MASK( 0) |\
130 IB_SA_COMP_MASK( 1))
1da177e4
LT		 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)
733d65fe 143#define IB_SA_PATH_REC_QOS_CLASS IB_SA_COMP_MASK(14)
1da177e4
LT		 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)
9fdca4da 152
dfa834e1
DC		 153enum sa_path_rec_type {
154 SA_PATH_REC_TYPE_IB,
155 SA_PATH_REC_TYPE_ROCE_V1,
57520751
DC		 156 SA_PATH_REC_TYPE_ROCE_V2,
157 SA_PATH_REC_TYPE_OPA
dfa834e1 158};
1da177e4 159
9fdca4da 160struct sa_path_rec_ib {
97f52eb4
SH		 161 __be16 dlid;
162 __be16 slid;
55efcfcd 163 u8 raw_traffic;
9fdca4da
DC		 164};
165
114cc9c4
PP		 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 */
9fdca4da 173struct sa_path_rec_roce {
114cc9c4 174 bool route_resolved;
9fdca4da
DC		 175 u8 dmac[ETH_ALEN];
176 /* ignored in IB */
177 int ifindex;
178 /* ignored in IB */
179 struct net *net;
180
181};
182
57520751 183struct sa_path_rec_opa {
57520751
DC		 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
9fdca4da
DC		 195struct sa_path_rec {
196 union ib_gid dgid;
197 union ib_gid sgid;
d3957b86 198 __be64 service_id;
1da177e4 199 /* reserved */
97f52eb4 200 __be32 flow_label;
1da177e4
LT		 201 u8 hop_limit;
202 u8 traffic_class;
55efcfcd 203 u8 reversible;
1da177e4 204 u8 numb_path;
97f52eb4 205 __be16 pkey;
733d65fe 206 __be16 qos_class;
1da177e4
LT		 207 u8 sl;
208 u8 mtu_selector;
3bf4fb82 209 u8 mtu;
1da177e4
LT		 210 u8 rate_selector;
211 u8 rate;
212 u8 packet_life_time_selector;
213 u8 packet_life_time;
214 u8 preference;
9fdca4da
DC		 215 union {
216 struct sa_path_rec_ib ib;
217 struct sa_path_rec_roce roce;
57520751 218 struct sa_path_rec_opa opa;
9fdca4da 219 };
dfa834e1 220 enum sa_path_rec_type rec_type;
1da177e4
LT		 221};
222
dfa834e1
DC		 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
57520751
DC		 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 }
d3957b86 272 ib->service_id = opa->service_id;
57520751
DC		 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;
d3957b86 291 opa->service_id = ib->service_id;
57520751
DC		 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
1da177e4
LT		 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;
97f52eb4
SH		 342 __be32 qkey;
343 __be16 mlid;
1da177e4 344 u8 mtu_selector;
3bf4fb82 345 u8 mtu;
1da177e4 346 u8 traffic_class;
97f52eb4 347 __be16 pkey;
1da177e4
LT		 348 u8 rate_selector;
349 u8 rate;
350 u8 packet_life_time_selector;
351 u8 packet_life_time;
352 u8 sl;
97f52eb4 353 __be32 flow_label;
1da177e4
LT		 354 u8 hop_limit;
355 u8 scope;
356 u8 join_state;
55efcfcd 357 u8 proxy_join;
1da177e4
LT		 358};
359
cbae32c5
HR		 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;
97f52eb4 404 __be16 pkey;
cbae32c5
HR		 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
aeab97ed
ES		 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
c1a0b23b
MT		 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
1da177e4
LT		 453struct ib_sa_query;
454
455void ib_sa_cancel_query(int id, struct ib_sa_query *query);
456
c1a0b23b
MT		 457int ib_sa_path_rec_get(struct ib_sa_client *client,
458 struct ib_device *device, u8 port_num,
c2f8fc4e 459 struct sa_path_rec *rec,
1da177e4 460 ib_sa_comp_mask comp_mask,
dd0fc66f 461 int timeout_ms, gfp_t gfp_mask,
1da177e4 462 void (*callback)(int status,
c2f8fc4e 463 struct sa_path_rec *resp,
1da177e4
LT		 464 void *context),
465 void *context,
466 struct ib_sa_query **query);
467
c1a0b23b
MT		 468int ib_sa_service_rec_query(struct ib_sa_client *client,
469 struct ib_device *device, u8 port_num,
cbae32c5
HR		 470 u8 method,
471 struct ib_sa_service_rec *rec,
472 ib_sa_comp_mask comp_mask,
dd0fc66f 473 int timeout_ms, gfp_t gfp_mask,
cbae32c5
HR		 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
faec2f7b
SH		 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
1da177e4 488/**
faec2f7b
SH		 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.
1da177e4 501 *
faec2f7b
SH		 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.)
1da177e4 507 *
faec2f7b
SH		 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.
1da177e4 515 */
faec2f7b
SH		 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);
1da177e4
LT		 524
525/**
faec2f7b
SH		 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.
1da177e4 529 *
faec2f7b
SH		 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.
1da177e4 545 */
faec2f7b
SH		 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,
bee3c3c9
MS		 555 struct net_device *ndev,
556 enum ib_gid_type gid_type,
90898850 557 struct rdma_ah_attr *ah_attr);
1da177e4 558
6d969a47 559/**
4ad6a024
PP		 560 * ib_init_ah_attr_from_path - Initialize address handle attributes based on
561 * an SA path record.
6d969a47 562 */
4ad6a024
PP		 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);
1da177e4 566
2e08b587
SH		 567/**
568 * ib_sa_pack_path - Conert a path record from struct ib_sa_path_rec
569 * to IB MAD wire format.
570 */
c2f8fc4e 571void ib_sa_pack_path(struct sa_path_rec *rec, void *attribute);
2e08b587 572
a7ca1f00
SH		 573/**
574 * ib_sa_unpack_path - Convert a path record from MAD format to struct
575 * ib_sa_path_rec.
576 */
c2f8fc4e 577void ib_sa_unpack_path(void *attribute, struct sa_path_rec *rec);
a7ca1f00 578
aeab97ed
ES		 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);
2e08b587 590
ee1c60b1
DC		 591bool ib_sa_sendonly_fullmem_support(struct ib_sa_client *client,
592 struct ib_device *device,
593 u8 port_num);
628e6f75 594
9fdca4da
DC		 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
0a514159
PP		 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
9d187177 606static inline void sa_path_set_slid(struct sa_path_rec *rec, u32 slid)
9fdca4da
DC		 607{
608 if (rec->rec_type == SA_PATH_REC_TYPE_IB)
9d187177 609 rec->ib.slid = cpu_to_be16(slid);
57520751 610 else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
9d187177 611 rec->opa.slid = cpu_to_be32(slid);
9fdca4da
DC		 612}
613
9d187177 614static inline void sa_path_set_dlid(struct sa_path_rec *rec, u32 dlid)
9fdca4da
DC		 615{
616 if (rec->rec_type == SA_PATH_REC_TYPE_IB)
9d187177 617 rec->ib.dlid = cpu_to_be16(dlid);
57520751 618 else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
9d187177 619 rec->opa.dlid = cpu_to_be32(dlid);
9fdca4da
DC		 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;
57520751
DC		 627 else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
628 rec->opa.raw_traffic = raw_traffic;
9fdca4da
DC		 629}
630
57520751 631static inline __be32 sa_path_get_slid(struct sa_path_rec *rec)
9fdca4da
DC		 632{
633 if (rec->rec_type == SA_PATH_REC_TYPE_IB)
57520751
DC		 634 return htonl(ntohs(rec->ib.slid));
635 else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
636 return rec->opa.slid;
9fdca4da
DC		 637 return 0;
638}
639
57520751 640static inline __be32 sa_path_get_dlid(struct sa_path_rec *rec)
9fdca4da
DC		 641{
642 if (rec->rec_type == SA_PATH_REC_TYPE_IB)
57520751
DC		 643 return htonl(ntohs(rec->ib.dlid));
644 else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
645 return rec->opa.dlid;
9fdca4da
DC		 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;
57520751
DC		 653 else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
654 return rec->opa.raw_traffic;
9fdca4da
DC		 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
1da177e4 711#endif /* IB_SA_H */
Linux 6.x block layer and io_uring tree(s)