Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2004 Topspin Communications. All rights reserved. |
Roland Dreier | 43506d9 | 2007-07-09 16:17:32 -0700 | [diff] [blame] | 3 | * Copyright (c) 2005 Voltaire, Inc. All rights reserved. |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 4 | * Copyright (c) 2006 Intel Corporation. All rights reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | */ |
| 34 | |
| 35 | #include <linux/module.h> |
| 36 | #include <linux/init.h> |
| 37 | #include <linux/err.h> |
| 38 | #include <linux/random.h> |
| 39 | #include <linux/spinlock.h> |
| 40 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <linux/dma-mapping.h> |
| 42 | #include <linux/kref.h> |
| 43 | #include <linux/idr.h> |
Tim Schmielau | 4e57b68 | 2005-10-30 15:03:48 -0800 | [diff] [blame] | 44 | #include <linux/workqueue.h> |
Matan Barak | dd5f03b | 2013-12-12 18:03:11 +0200 | [diff] [blame] | 45 | #include <uapi/linux/if_ether.h> |
Roland Dreier | a4d61e8 | 2005-08-25 13:40:04 -0700 | [diff] [blame] | 46 | #include <rdma/ib_pack.h> |
Sean Hefty | 6d969a4 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 47 | #include <rdma/ib_cache.h> |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 48 | #include <rdma/rdma_netlink.h> |
| 49 | #include <net/netlink.h> |
| 50 | #include <uapi/rdma/ib_user_sa.h> |
| 51 | #include <rdma/ib_marshall.h> |
Matan Barak | 2002983 | 2015-12-23 14:56:53 +0200 | [diff] [blame] | 52 | #include <rdma/ib_addr.h> |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 53 | #include "sa.h" |
Matan Barak | 2002983 | 2015-12-23 14:56:53 +0200 | [diff] [blame] | 54 | #include "core_priv.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 56 | #define IB_SA_LOCAL_SVC_TIMEOUT_MIN 100 |
| 57 | #define IB_SA_LOCAL_SVC_TIMEOUT_DEFAULT 2000 |
| 58 | #define IB_SA_LOCAL_SVC_TIMEOUT_MAX 200000 |
| 59 | static int sa_local_svc_timeout_ms = IB_SA_LOCAL_SVC_TIMEOUT_DEFAULT; |
| 60 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | struct ib_sa_sm_ah { |
| 62 | struct ib_ah *ah; |
| 63 | struct kref ref; |
Sean Hefty | 2aec5c6 | 2007-06-18 11:03:58 -0700 | [diff] [blame] | 64 | u16 pkey_index; |
Sean Hefty | d0e7bb1 | 2007-04-05 10:51:10 -0700 | [diff] [blame] | 65 | u8 src_path_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | }; |
| 67 | |
Alex Vesker | 3d3fd74 | 2016-07-06 16:36:34 +0300 | [diff] [blame] | 68 | struct ib_sa_classport_cache { |
| 69 | bool valid; |
| 70 | struct ib_class_port_info data; |
| 71 | }; |
| 72 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | struct ib_sa_port { |
| 74 | struct ib_mad_agent *agent; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | struct ib_sa_sm_ah *sm_ah; |
| 76 | struct work_struct update_task; |
Alex Vesker | 3d3fd74 | 2016-07-06 16:36:34 +0300 | [diff] [blame] | 77 | struct ib_sa_classport_cache classport_info; |
| 78 | spinlock_t classport_lock; /* protects class port info set */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | spinlock_t ah_lock; |
| 80 | u8 port_num; |
| 81 | }; |
| 82 | |
| 83 | struct ib_sa_device { |
| 84 | int start_port, end_port; |
| 85 | struct ib_event_handler event_handler; |
| 86 | struct ib_sa_port port[0]; |
| 87 | }; |
| 88 | |
| 89 | struct ib_sa_query { |
| 90 | void (*callback)(struct ib_sa_query *, int, struct ib_sa_mad *); |
| 91 | void (*release)(struct ib_sa_query *); |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 92 | struct ib_sa_client *client; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 93 | struct ib_sa_port *port; |
| 94 | struct ib_mad_send_buf *mad_buf; |
| 95 | struct ib_sa_sm_ah *sm_ah; |
| 96 | int id; |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 97 | u32 flags; |
| 98 | struct list_head list; /* Local svc request list */ |
| 99 | u32 seq; /* Local svc request sequence number */ |
| 100 | unsigned long timeout; /* Local svc timeout */ |
| 101 | u8 path_use; /* How will the pathrecord be used */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | }; |
| 103 | |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 104 | #define IB_SA_ENABLE_LOCAL_SERVICE 0x00000001 |
| 105 | #define IB_SA_CANCEL 0x00000002 |
| 106 | |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 107 | struct ib_sa_service_query { |
| 108 | void (*callback)(int, struct ib_sa_service_rec *, void *); |
| 109 | void *context; |
| 110 | struct ib_sa_query sa_query; |
| 111 | }; |
| 112 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | struct ib_sa_path_query { |
| 114 | void (*callback)(int, struct ib_sa_path_rec *, void *); |
| 115 | void *context; |
| 116 | struct ib_sa_query sa_query; |
| 117 | }; |
| 118 | |
Erez Shitrit | aeab97e | 2012-06-19 11:21:38 +0300 | [diff] [blame] | 119 | struct ib_sa_guidinfo_query { |
| 120 | void (*callback)(int, struct ib_sa_guidinfo_rec *, void *); |
| 121 | void *context; |
| 122 | struct ib_sa_query sa_query; |
| 123 | }; |
| 124 | |
Erez Shitrit | 628e6f7 | 2016-05-25 22:02:05 +0300 | [diff] [blame] | 125 | struct ib_sa_classport_info_query { |
| 126 | void (*callback)(int, struct ib_class_port_info *, void *); |
| 127 | void *context; |
| 128 | struct ib_sa_query sa_query; |
| 129 | }; |
| 130 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | struct ib_sa_mcmember_query { |
| 132 | void (*callback)(int, struct ib_sa_mcmember_rec *, void *); |
| 133 | void *context; |
| 134 | struct ib_sa_query sa_query; |
| 135 | }; |
| 136 | |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 137 | static LIST_HEAD(ib_nl_request_list); |
| 138 | static DEFINE_SPINLOCK(ib_nl_request_lock); |
| 139 | static atomic_t ib_nl_sa_request_seq; |
| 140 | static struct workqueue_struct *ib_nl_wq; |
| 141 | static struct delayed_work ib_nl_timed_work; |
| 142 | static const struct nla_policy ib_nl_policy[LS_NLA_TYPE_MAX] = { |
| 143 | [LS_NLA_TYPE_PATH_RECORD] = {.type = NLA_BINARY, |
| 144 | .len = sizeof(struct ib_path_rec_data)}, |
| 145 | [LS_NLA_TYPE_TIMEOUT] = {.type = NLA_U32}, |
| 146 | [LS_NLA_TYPE_SERVICE_ID] = {.type = NLA_U64}, |
| 147 | [LS_NLA_TYPE_DGID] = {.type = NLA_BINARY, |
| 148 | .len = sizeof(struct rdma_nla_ls_gid)}, |
| 149 | [LS_NLA_TYPE_SGID] = {.type = NLA_BINARY, |
| 150 | .len = sizeof(struct rdma_nla_ls_gid)}, |
| 151 | [LS_NLA_TYPE_TCLASS] = {.type = NLA_U8}, |
| 152 | [LS_NLA_TYPE_PKEY] = {.type = NLA_U16}, |
| 153 | [LS_NLA_TYPE_QOS_CLASS] = {.type = NLA_U16}, |
| 154 | }; |
| 155 | |
| 156 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | static void ib_sa_add_one(struct ib_device *device); |
Haggai Eran | 7c1eb45 | 2015-07-30 17:50:14 +0300 | [diff] [blame] | 158 | static void ib_sa_remove_one(struct ib_device *device, void *client_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | |
| 160 | static struct ib_client sa_client = { |
| 161 | .name = "sa", |
| 162 | .add = ib_sa_add_one, |
| 163 | .remove = ib_sa_remove_one |
| 164 | }; |
| 165 | |
Roland Dreier | 6276e08 | 2009-09-05 20:24:23 -0700 | [diff] [blame] | 166 | static DEFINE_SPINLOCK(idr_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | static DEFINE_IDR(query_idr); |
| 168 | |
Roland Dreier | 6276e08 | 2009-09-05 20:24:23 -0700 | [diff] [blame] | 169 | static DEFINE_SPINLOCK(tid_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | static u32 tid; |
| 171 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | #define PATH_REC_FIELD(field) \ |
| 173 | .struct_offset_bytes = offsetof(struct ib_sa_path_rec, field), \ |
| 174 | .struct_size_bytes = sizeof ((struct ib_sa_path_rec *) 0)->field, \ |
| 175 | .field_name = "sa_path_rec:" #field |
| 176 | |
| 177 | static const struct ib_field path_rec_table[] = { |
Sean Hefty | 733d65f | 2007-08-08 15:41:28 -0700 | [diff] [blame] | 178 | { PATH_REC_FIELD(service_id), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | .offset_words = 0, |
| 180 | .offset_bits = 0, |
Sean Hefty | 733d65f | 2007-08-08 15:41:28 -0700 | [diff] [blame] | 181 | .size_bits = 64 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | { PATH_REC_FIELD(dgid), |
| 183 | .offset_words = 2, |
| 184 | .offset_bits = 0, |
| 185 | .size_bits = 128 }, |
| 186 | { PATH_REC_FIELD(sgid), |
| 187 | .offset_words = 6, |
| 188 | .offset_bits = 0, |
| 189 | .size_bits = 128 }, |
| 190 | { PATH_REC_FIELD(dlid), |
| 191 | .offset_words = 10, |
| 192 | .offset_bits = 0, |
| 193 | .size_bits = 16 }, |
| 194 | { PATH_REC_FIELD(slid), |
| 195 | .offset_words = 10, |
| 196 | .offset_bits = 16, |
| 197 | .size_bits = 16 }, |
| 198 | { PATH_REC_FIELD(raw_traffic), |
| 199 | .offset_words = 11, |
| 200 | .offset_bits = 0, |
| 201 | .size_bits = 1 }, |
| 202 | { RESERVED, |
| 203 | .offset_words = 11, |
| 204 | .offset_bits = 1, |
| 205 | .size_bits = 3 }, |
| 206 | { PATH_REC_FIELD(flow_label), |
| 207 | .offset_words = 11, |
| 208 | .offset_bits = 4, |
| 209 | .size_bits = 20 }, |
| 210 | { PATH_REC_FIELD(hop_limit), |
| 211 | .offset_words = 11, |
| 212 | .offset_bits = 24, |
| 213 | .size_bits = 8 }, |
| 214 | { PATH_REC_FIELD(traffic_class), |
| 215 | .offset_words = 12, |
| 216 | .offset_bits = 0, |
| 217 | .size_bits = 8 }, |
| 218 | { PATH_REC_FIELD(reversible), |
| 219 | .offset_words = 12, |
| 220 | .offset_bits = 8, |
| 221 | .size_bits = 1 }, |
| 222 | { PATH_REC_FIELD(numb_path), |
| 223 | .offset_words = 12, |
| 224 | .offset_bits = 9, |
| 225 | .size_bits = 7 }, |
| 226 | { PATH_REC_FIELD(pkey), |
| 227 | .offset_words = 12, |
| 228 | .offset_bits = 16, |
| 229 | .size_bits = 16 }, |
Sean Hefty | 733d65f | 2007-08-08 15:41:28 -0700 | [diff] [blame] | 230 | { PATH_REC_FIELD(qos_class), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | .offset_words = 13, |
| 232 | .offset_bits = 0, |
| 233 | .size_bits = 12 }, |
| 234 | { PATH_REC_FIELD(sl), |
| 235 | .offset_words = 13, |
| 236 | .offset_bits = 12, |
| 237 | .size_bits = 4 }, |
| 238 | { PATH_REC_FIELD(mtu_selector), |
| 239 | .offset_words = 13, |
| 240 | .offset_bits = 16, |
| 241 | .size_bits = 2 }, |
| 242 | { PATH_REC_FIELD(mtu), |
| 243 | .offset_words = 13, |
| 244 | .offset_bits = 18, |
| 245 | .size_bits = 6 }, |
| 246 | { PATH_REC_FIELD(rate_selector), |
| 247 | .offset_words = 13, |
| 248 | .offset_bits = 24, |
| 249 | .size_bits = 2 }, |
| 250 | { PATH_REC_FIELD(rate), |
| 251 | .offset_words = 13, |
| 252 | .offset_bits = 26, |
| 253 | .size_bits = 6 }, |
| 254 | { PATH_REC_FIELD(packet_life_time_selector), |
| 255 | .offset_words = 14, |
| 256 | .offset_bits = 0, |
| 257 | .size_bits = 2 }, |
| 258 | { PATH_REC_FIELD(packet_life_time), |
| 259 | .offset_words = 14, |
| 260 | .offset_bits = 2, |
| 261 | .size_bits = 6 }, |
| 262 | { PATH_REC_FIELD(preference), |
| 263 | .offset_words = 14, |
| 264 | .offset_bits = 8, |
| 265 | .size_bits = 8 }, |
| 266 | { RESERVED, |
| 267 | .offset_words = 14, |
| 268 | .offset_bits = 16, |
| 269 | .size_bits = 48 }, |
| 270 | }; |
| 271 | |
| 272 | #define MCMEMBER_REC_FIELD(field) \ |
| 273 | .struct_offset_bytes = offsetof(struct ib_sa_mcmember_rec, field), \ |
| 274 | .struct_size_bytes = sizeof ((struct ib_sa_mcmember_rec *) 0)->field, \ |
| 275 | .field_name = "sa_mcmember_rec:" #field |
| 276 | |
| 277 | static const struct ib_field mcmember_rec_table[] = { |
| 278 | { MCMEMBER_REC_FIELD(mgid), |
| 279 | .offset_words = 0, |
| 280 | .offset_bits = 0, |
| 281 | .size_bits = 128 }, |
| 282 | { MCMEMBER_REC_FIELD(port_gid), |
| 283 | .offset_words = 4, |
| 284 | .offset_bits = 0, |
| 285 | .size_bits = 128 }, |
| 286 | { MCMEMBER_REC_FIELD(qkey), |
| 287 | .offset_words = 8, |
| 288 | .offset_bits = 0, |
| 289 | .size_bits = 32 }, |
| 290 | { MCMEMBER_REC_FIELD(mlid), |
| 291 | .offset_words = 9, |
| 292 | .offset_bits = 0, |
| 293 | .size_bits = 16 }, |
| 294 | { MCMEMBER_REC_FIELD(mtu_selector), |
| 295 | .offset_words = 9, |
| 296 | .offset_bits = 16, |
| 297 | .size_bits = 2 }, |
| 298 | { MCMEMBER_REC_FIELD(mtu), |
| 299 | .offset_words = 9, |
| 300 | .offset_bits = 18, |
| 301 | .size_bits = 6 }, |
| 302 | { MCMEMBER_REC_FIELD(traffic_class), |
| 303 | .offset_words = 9, |
| 304 | .offset_bits = 24, |
| 305 | .size_bits = 8 }, |
| 306 | { MCMEMBER_REC_FIELD(pkey), |
| 307 | .offset_words = 10, |
| 308 | .offset_bits = 0, |
| 309 | .size_bits = 16 }, |
| 310 | { MCMEMBER_REC_FIELD(rate_selector), |
| 311 | .offset_words = 10, |
| 312 | .offset_bits = 16, |
| 313 | .size_bits = 2 }, |
| 314 | { MCMEMBER_REC_FIELD(rate), |
| 315 | .offset_words = 10, |
| 316 | .offset_bits = 18, |
| 317 | .size_bits = 6 }, |
| 318 | { MCMEMBER_REC_FIELD(packet_life_time_selector), |
| 319 | .offset_words = 10, |
| 320 | .offset_bits = 24, |
| 321 | .size_bits = 2 }, |
| 322 | { MCMEMBER_REC_FIELD(packet_life_time), |
| 323 | .offset_words = 10, |
| 324 | .offset_bits = 26, |
| 325 | .size_bits = 6 }, |
| 326 | { MCMEMBER_REC_FIELD(sl), |
| 327 | .offset_words = 11, |
| 328 | .offset_bits = 0, |
| 329 | .size_bits = 4 }, |
| 330 | { MCMEMBER_REC_FIELD(flow_label), |
| 331 | .offset_words = 11, |
| 332 | .offset_bits = 4, |
| 333 | .size_bits = 20 }, |
| 334 | { MCMEMBER_REC_FIELD(hop_limit), |
| 335 | .offset_words = 11, |
| 336 | .offset_bits = 24, |
| 337 | .size_bits = 8 }, |
| 338 | { MCMEMBER_REC_FIELD(scope), |
| 339 | .offset_words = 12, |
| 340 | .offset_bits = 0, |
| 341 | .size_bits = 4 }, |
| 342 | { MCMEMBER_REC_FIELD(join_state), |
| 343 | .offset_words = 12, |
| 344 | .offset_bits = 4, |
| 345 | .size_bits = 4 }, |
| 346 | { MCMEMBER_REC_FIELD(proxy_join), |
| 347 | .offset_words = 12, |
| 348 | .offset_bits = 8, |
| 349 | .size_bits = 1 }, |
| 350 | { RESERVED, |
| 351 | .offset_words = 12, |
| 352 | .offset_bits = 9, |
| 353 | .size_bits = 23 }, |
| 354 | }; |
| 355 | |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 356 | #define SERVICE_REC_FIELD(field) \ |
| 357 | .struct_offset_bytes = offsetof(struct ib_sa_service_rec, field), \ |
| 358 | .struct_size_bytes = sizeof ((struct ib_sa_service_rec *) 0)->field, \ |
| 359 | .field_name = "sa_service_rec:" #field |
| 360 | |
| 361 | static const struct ib_field service_rec_table[] = { |
| 362 | { SERVICE_REC_FIELD(id), |
| 363 | .offset_words = 0, |
| 364 | .offset_bits = 0, |
| 365 | .size_bits = 64 }, |
| 366 | { SERVICE_REC_FIELD(gid), |
| 367 | .offset_words = 2, |
| 368 | .offset_bits = 0, |
| 369 | .size_bits = 128 }, |
| 370 | { SERVICE_REC_FIELD(pkey), |
| 371 | .offset_words = 6, |
| 372 | .offset_bits = 0, |
| 373 | .size_bits = 16 }, |
| 374 | { SERVICE_REC_FIELD(lease), |
| 375 | .offset_words = 7, |
| 376 | .offset_bits = 0, |
| 377 | .size_bits = 32 }, |
| 378 | { SERVICE_REC_FIELD(key), |
| 379 | .offset_words = 8, |
| 380 | .offset_bits = 0, |
| 381 | .size_bits = 128 }, |
| 382 | { SERVICE_REC_FIELD(name), |
| 383 | .offset_words = 12, |
| 384 | .offset_bits = 0, |
| 385 | .size_bits = 64*8 }, |
| 386 | { SERVICE_REC_FIELD(data8), |
| 387 | .offset_words = 28, |
| 388 | .offset_bits = 0, |
| 389 | .size_bits = 16*8 }, |
| 390 | { SERVICE_REC_FIELD(data16), |
| 391 | .offset_words = 32, |
| 392 | .offset_bits = 0, |
| 393 | .size_bits = 8*16 }, |
| 394 | { SERVICE_REC_FIELD(data32), |
| 395 | .offset_words = 36, |
| 396 | .offset_bits = 0, |
| 397 | .size_bits = 4*32 }, |
| 398 | { SERVICE_REC_FIELD(data64), |
| 399 | .offset_words = 40, |
| 400 | .offset_bits = 0, |
| 401 | .size_bits = 2*64 }, |
| 402 | }; |
| 403 | |
Erez Shitrit | 628e6f7 | 2016-05-25 22:02:05 +0300 | [diff] [blame] | 404 | #define CLASSPORTINFO_REC_FIELD(field) \ |
| 405 | .struct_offset_bytes = offsetof(struct ib_class_port_info, field), \ |
| 406 | .struct_size_bytes = sizeof((struct ib_class_port_info *)0)->field, \ |
| 407 | .field_name = "ib_class_port_info:" #field |
| 408 | |
| 409 | static const struct ib_field classport_info_rec_table[] = { |
| 410 | { CLASSPORTINFO_REC_FIELD(base_version), |
| 411 | .offset_words = 0, |
| 412 | .offset_bits = 0, |
| 413 | .size_bits = 8 }, |
| 414 | { CLASSPORTINFO_REC_FIELD(class_version), |
| 415 | .offset_words = 0, |
| 416 | .offset_bits = 8, |
| 417 | .size_bits = 8 }, |
| 418 | { CLASSPORTINFO_REC_FIELD(capability_mask), |
| 419 | .offset_words = 0, |
| 420 | .offset_bits = 16, |
| 421 | .size_bits = 16 }, |
| 422 | { CLASSPORTINFO_REC_FIELD(cap_mask2_resp_time), |
| 423 | .offset_words = 1, |
| 424 | .offset_bits = 0, |
| 425 | .size_bits = 32 }, |
| 426 | { CLASSPORTINFO_REC_FIELD(redirect_gid), |
| 427 | .offset_words = 2, |
| 428 | .offset_bits = 0, |
| 429 | .size_bits = 128 }, |
| 430 | { CLASSPORTINFO_REC_FIELD(redirect_tcslfl), |
| 431 | .offset_words = 6, |
| 432 | .offset_bits = 0, |
| 433 | .size_bits = 32 }, |
| 434 | { CLASSPORTINFO_REC_FIELD(redirect_lid), |
| 435 | .offset_words = 7, |
| 436 | .offset_bits = 0, |
| 437 | .size_bits = 16 }, |
| 438 | { CLASSPORTINFO_REC_FIELD(redirect_pkey), |
| 439 | .offset_words = 7, |
| 440 | .offset_bits = 16, |
| 441 | .size_bits = 16 }, |
| 442 | |
| 443 | { CLASSPORTINFO_REC_FIELD(redirect_qp), |
| 444 | .offset_words = 8, |
| 445 | .offset_bits = 0, |
| 446 | .size_bits = 32 }, |
| 447 | { CLASSPORTINFO_REC_FIELD(redirect_qkey), |
| 448 | .offset_words = 9, |
| 449 | .offset_bits = 0, |
| 450 | .size_bits = 32 }, |
| 451 | |
| 452 | { CLASSPORTINFO_REC_FIELD(trap_gid), |
| 453 | .offset_words = 10, |
| 454 | .offset_bits = 0, |
| 455 | .size_bits = 128 }, |
| 456 | { CLASSPORTINFO_REC_FIELD(trap_tcslfl), |
| 457 | .offset_words = 14, |
| 458 | .offset_bits = 0, |
| 459 | .size_bits = 32 }, |
| 460 | |
| 461 | { CLASSPORTINFO_REC_FIELD(trap_lid), |
| 462 | .offset_words = 15, |
| 463 | .offset_bits = 0, |
| 464 | .size_bits = 16 }, |
| 465 | { CLASSPORTINFO_REC_FIELD(trap_pkey), |
| 466 | .offset_words = 15, |
| 467 | .offset_bits = 16, |
| 468 | .size_bits = 16 }, |
| 469 | |
| 470 | { CLASSPORTINFO_REC_FIELD(trap_hlqp), |
| 471 | .offset_words = 16, |
| 472 | .offset_bits = 0, |
| 473 | .size_bits = 32 }, |
| 474 | { CLASSPORTINFO_REC_FIELD(trap_qkey), |
| 475 | .offset_words = 17, |
| 476 | .offset_bits = 0, |
| 477 | .size_bits = 32 }, |
| 478 | }; |
| 479 | |
Erez Shitrit | aeab97e | 2012-06-19 11:21:38 +0300 | [diff] [blame] | 480 | #define GUIDINFO_REC_FIELD(field) \ |
| 481 | .struct_offset_bytes = offsetof(struct ib_sa_guidinfo_rec, field), \ |
| 482 | .struct_size_bytes = sizeof((struct ib_sa_guidinfo_rec *) 0)->field, \ |
| 483 | .field_name = "sa_guidinfo_rec:" #field |
| 484 | |
| 485 | static const struct ib_field guidinfo_rec_table[] = { |
| 486 | { GUIDINFO_REC_FIELD(lid), |
| 487 | .offset_words = 0, |
| 488 | .offset_bits = 0, |
| 489 | .size_bits = 16 }, |
| 490 | { GUIDINFO_REC_FIELD(block_num), |
| 491 | .offset_words = 0, |
| 492 | .offset_bits = 16, |
| 493 | .size_bits = 8 }, |
| 494 | { GUIDINFO_REC_FIELD(res1), |
| 495 | .offset_words = 0, |
| 496 | .offset_bits = 24, |
| 497 | .size_bits = 8 }, |
| 498 | { GUIDINFO_REC_FIELD(res2), |
| 499 | .offset_words = 1, |
| 500 | .offset_bits = 0, |
| 501 | .size_bits = 32 }, |
| 502 | { GUIDINFO_REC_FIELD(guid_info_list), |
| 503 | .offset_words = 2, |
| 504 | .offset_bits = 0, |
| 505 | .size_bits = 512 }, |
| 506 | }; |
| 507 | |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 508 | static inline void ib_sa_disable_local_svc(struct ib_sa_query *query) |
| 509 | { |
| 510 | query->flags &= ~IB_SA_ENABLE_LOCAL_SERVICE; |
| 511 | } |
| 512 | |
| 513 | static inline int ib_sa_query_cancelled(struct ib_sa_query *query) |
| 514 | { |
| 515 | return (query->flags & IB_SA_CANCEL); |
| 516 | } |
| 517 | |
| 518 | static void ib_nl_set_path_rec_attrs(struct sk_buff *skb, |
| 519 | struct ib_sa_query *query) |
| 520 | { |
| 521 | struct ib_sa_path_rec *sa_rec = query->mad_buf->context[1]; |
| 522 | struct ib_sa_mad *mad = query->mad_buf->mad; |
| 523 | ib_sa_comp_mask comp_mask = mad->sa_hdr.comp_mask; |
| 524 | u16 val16; |
| 525 | u64 val64; |
| 526 | struct rdma_ls_resolve_header *header; |
| 527 | |
| 528 | query->mad_buf->context[1] = NULL; |
| 529 | |
| 530 | /* Construct the family header first */ |
| 531 | header = (struct rdma_ls_resolve_header *) |
| 532 | skb_put(skb, NLMSG_ALIGN(sizeof(*header))); |
| 533 | memcpy(header->device_name, query->port->agent->device->name, |
| 534 | LS_DEVICE_NAME_MAX); |
| 535 | header->port_num = query->port->port_num; |
| 536 | |
| 537 | if ((comp_mask & IB_SA_PATH_REC_REVERSIBLE) && |
| 538 | sa_rec->reversible != 0) |
| 539 | query->path_use = LS_RESOLVE_PATH_USE_GMP; |
| 540 | else |
| 541 | query->path_use = LS_RESOLVE_PATH_USE_UNIDIRECTIONAL; |
| 542 | header->path_use = query->path_use; |
| 543 | |
| 544 | /* Now build the attributes */ |
| 545 | if (comp_mask & IB_SA_PATH_REC_SERVICE_ID) { |
| 546 | val64 = be64_to_cpu(sa_rec->service_id); |
| 547 | nla_put(skb, RDMA_NLA_F_MANDATORY | LS_NLA_TYPE_SERVICE_ID, |
| 548 | sizeof(val64), &val64); |
| 549 | } |
| 550 | if (comp_mask & IB_SA_PATH_REC_DGID) |
| 551 | nla_put(skb, RDMA_NLA_F_MANDATORY | LS_NLA_TYPE_DGID, |
| 552 | sizeof(sa_rec->dgid), &sa_rec->dgid); |
| 553 | if (comp_mask & IB_SA_PATH_REC_SGID) |
| 554 | nla_put(skb, RDMA_NLA_F_MANDATORY | LS_NLA_TYPE_SGID, |
| 555 | sizeof(sa_rec->sgid), &sa_rec->sgid); |
| 556 | if (comp_mask & IB_SA_PATH_REC_TRAFFIC_CLASS) |
| 557 | nla_put(skb, RDMA_NLA_F_MANDATORY | LS_NLA_TYPE_TCLASS, |
| 558 | sizeof(sa_rec->traffic_class), &sa_rec->traffic_class); |
| 559 | |
| 560 | if (comp_mask & IB_SA_PATH_REC_PKEY) { |
| 561 | val16 = be16_to_cpu(sa_rec->pkey); |
| 562 | nla_put(skb, RDMA_NLA_F_MANDATORY | LS_NLA_TYPE_PKEY, |
| 563 | sizeof(val16), &val16); |
| 564 | } |
| 565 | if (comp_mask & IB_SA_PATH_REC_QOS_CLASS) { |
| 566 | val16 = be16_to_cpu(sa_rec->qos_class); |
| 567 | nla_put(skb, RDMA_NLA_F_MANDATORY | LS_NLA_TYPE_QOS_CLASS, |
| 568 | sizeof(val16), &val16); |
| 569 | } |
| 570 | } |
| 571 | |
| 572 | static int ib_nl_get_path_rec_attrs_len(ib_sa_comp_mask comp_mask) |
| 573 | { |
| 574 | int len = 0; |
| 575 | |
| 576 | if (comp_mask & IB_SA_PATH_REC_SERVICE_ID) |
| 577 | len += nla_total_size(sizeof(u64)); |
| 578 | if (comp_mask & IB_SA_PATH_REC_DGID) |
| 579 | len += nla_total_size(sizeof(struct rdma_nla_ls_gid)); |
| 580 | if (comp_mask & IB_SA_PATH_REC_SGID) |
| 581 | len += nla_total_size(sizeof(struct rdma_nla_ls_gid)); |
| 582 | if (comp_mask & IB_SA_PATH_REC_TRAFFIC_CLASS) |
| 583 | len += nla_total_size(sizeof(u8)); |
| 584 | if (comp_mask & IB_SA_PATH_REC_PKEY) |
| 585 | len += nla_total_size(sizeof(u16)); |
| 586 | if (comp_mask & IB_SA_PATH_REC_QOS_CLASS) |
| 587 | len += nla_total_size(sizeof(u16)); |
| 588 | |
| 589 | /* |
| 590 | * Make sure that at least some of the required comp_mask bits are |
| 591 | * set. |
| 592 | */ |
| 593 | if (WARN_ON(len == 0)) |
| 594 | return len; |
| 595 | |
| 596 | /* Add the family header */ |
| 597 | len += NLMSG_ALIGN(sizeof(struct rdma_ls_resolve_header)); |
| 598 | |
| 599 | return len; |
| 600 | } |
| 601 | |
Kaike Wan | 3ebd2fd | 2015-10-30 08:23:45 -0400 | [diff] [blame] | 602 | static int ib_nl_send_msg(struct ib_sa_query *query, gfp_t gfp_mask) |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 603 | { |
| 604 | struct sk_buff *skb = NULL; |
| 605 | struct nlmsghdr *nlh; |
| 606 | void *data; |
| 607 | int ret = 0; |
| 608 | struct ib_sa_mad *mad; |
| 609 | int len; |
| 610 | |
| 611 | mad = query->mad_buf->mad; |
| 612 | len = ib_nl_get_path_rec_attrs_len(mad->sa_hdr.comp_mask); |
| 613 | if (len <= 0) |
| 614 | return -EMSGSIZE; |
| 615 | |
Kaike Wan | 3ebd2fd | 2015-10-30 08:23:45 -0400 | [diff] [blame] | 616 | skb = nlmsg_new(len, gfp_mask); |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 617 | if (!skb) |
| 618 | return -ENOMEM; |
| 619 | |
| 620 | /* Put nlmsg header only for now */ |
| 621 | data = ibnl_put_msg(skb, &nlh, query->seq, 0, RDMA_NL_LS, |
Kaike Wan | ba13b5f | 2015-08-20 14:20:42 -0400 | [diff] [blame] | 622 | RDMA_NL_LS_OP_RESOLVE, NLM_F_REQUEST); |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 623 | if (!data) { |
Mark Bloch | 0f377d8 | 2016-05-06 22:45:27 +0300 | [diff] [blame] | 624 | nlmsg_free(skb); |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 625 | return -EMSGSIZE; |
| 626 | } |
| 627 | |
| 628 | /* Add attributes */ |
| 629 | ib_nl_set_path_rec_attrs(skb, query); |
| 630 | |
| 631 | /* Repair the nlmsg header length */ |
| 632 | nlmsg_end(skb, nlh); |
| 633 | |
Kaike Wan | 3ebd2fd | 2015-10-30 08:23:45 -0400 | [diff] [blame] | 634 | ret = ibnl_multicast(skb, nlh, RDMA_NL_GROUP_LS, gfp_mask); |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 635 | if (!ret) |
| 636 | ret = len; |
| 637 | else |
| 638 | ret = 0; |
| 639 | |
| 640 | return ret; |
| 641 | } |
| 642 | |
Kaike Wan | 3ebd2fd | 2015-10-30 08:23:45 -0400 | [diff] [blame] | 643 | static int ib_nl_make_request(struct ib_sa_query *query, gfp_t gfp_mask) |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 644 | { |
| 645 | unsigned long flags; |
| 646 | unsigned long delay; |
| 647 | int ret; |
| 648 | |
| 649 | INIT_LIST_HEAD(&query->list); |
| 650 | query->seq = (u32)atomic_inc_return(&ib_nl_sa_request_seq); |
| 651 | |
Kaike Wan | 3ebd2fd | 2015-10-30 08:23:45 -0400 | [diff] [blame] | 652 | /* Put the request on the list first.*/ |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 653 | spin_lock_irqsave(&ib_nl_request_lock, flags); |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 654 | delay = msecs_to_jiffies(sa_local_svc_timeout_ms); |
| 655 | query->timeout = delay + jiffies; |
| 656 | list_add_tail(&query->list, &ib_nl_request_list); |
| 657 | /* Start the timeout if this is the only request */ |
| 658 | if (ib_nl_request_list.next == &query->list) |
| 659 | queue_delayed_work(ib_nl_wq, &ib_nl_timed_work, delay); |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 660 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); |
| 661 | |
Kaike Wan | 3ebd2fd | 2015-10-30 08:23:45 -0400 | [diff] [blame] | 662 | ret = ib_nl_send_msg(query, gfp_mask); |
| 663 | if (ret <= 0) { |
| 664 | ret = -EIO; |
| 665 | /* Remove the request */ |
| 666 | spin_lock_irqsave(&ib_nl_request_lock, flags); |
| 667 | list_del(&query->list); |
| 668 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); |
| 669 | } else { |
| 670 | ret = 0; |
| 671 | } |
| 672 | |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 673 | return ret; |
| 674 | } |
| 675 | |
| 676 | static int ib_nl_cancel_request(struct ib_sa_query *query) |
| 677 | { |
| 678 | unsigned long flags; |
| 679 | struct ib_sa_query *wait_query; |
| 680 | int found = 0; |
| 681 | |
| 682 | spin_lock_irqsave(&ib_nl_request_lock, flags); |
| 683 | list_for_each_entry(wait_query, &ib_nl_request_list, list) { |
| 684 | /* Let the timeout to take care of the callback */ |
| 685 | if (query == wait_query) { |
| 686 | query->flags |= IB_SA_CANCEL; |
| 687 | query->timeout = jiffies; |
| 688 | list_move(&query->list, &ib_nl_request_list); |
| 689 | found = 1; |
| 690 | mod_delayed_work(ib_nl_wq, &ib_nl_timed_work, 1); |
| 691 | break; |
| 692 | } |
| 693 | } |
| 694 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); |
| 695 | |
| 696 | return found; |
| 697 | } |
| 698 | |
| 699 | static void send_handler(struct ib_mad_agent *agent, |
| 700 | struct ib_mad_send_wc *mad_send_wc); |
| 701 | |
| 702 | static void ib_nl_process_good_resolve_rsp(struct ib_sa_query *query, |
| 703 | const struct nlmsghdr *nlh) |
| 704 | { |
| 705 | struct ib_mad_send_wc mad_send_wc; |
| 706 | struct ib_sa_mad *mad = NULL; |
| 707 | const struct nlattr *head, *curr; |
| 708 | struct ib_path_rec_data *rec; |
| 709 | int len, rem; |
| 710 | u32 mask = 0; |
| 711 | int status = -EIO; |
| 712 | |
| 713 | if (query->callback) { |
| 714 | head = (const struct nlattr *) nlmsg_data(nlh); |
| 715 | len = nlmsg_len(nlh); |
| 716 | switch (query->path_use) { |
| 717 | case LS_RESOLVE_PATH_USE_UNIDIRECTIONAL: |
| 718 | mask = IB_PATH_PRIMARY | IB_PATH_OUTBOUND; |
| 719 | break; |
| 720 | |
| 721 | case LS_RESOLVE_PATH_USE_ALL: |
| 722 | case LS_RESOLVE_PATH_USE_GMP: |
| 723 | default: |
| 724 | mask = IB_PATH_PRIMARY | IB_PATH_GMP | |
| 725 | IB_PATH_BIDIRECTIONAL; |
| 726 | break; |
| 727 | } |
| 728 | nla_for_each_attr(curr, head, len, rem) { |
| 729 | if (curr->nla_type == LS_NLA_TYPE_PATH_RECORD) { |
| 730 | rec = nla_data(curr); |
| 731 | /* |
| 732 | * Get the first one. In the future, we may |
| 733 | * need to get up to 6 pathrecords. |
| 734 | */ |
| 735 | if ((rec->flags & mask) == mask) { |
| 736 | mad = query->mad_buf->mad; |
| 737 | mad->mad_hdr.method |= |
| 738 | IB_MGMT_METHOD_RESP; |
| 739 | memcpy(mad->data, rec->path_rec, |
| 740 | sizeof(rec->path_rec)); |
| 741 | status = 0; |
| 742 | break; |
| 743 | } |
| 744 | } |
| 745 | } |
| 746 | query->callback(query, status, mad); |
| 747 | } |
| 748 | |
| 749 | mad_send_wc.send_buf = query->mad_buf; |
| 750 | mad_send_wc.status = IB_WC_SUCCESS; |
| 751 | send_handler(query->mad_buf->mad_agent, &mad_send_wc); |
| 752 | } |
| 753 | |
| 754 | static void ib_nl_request_timeout(struct work_struct *work) |
| 755 | { |
| 756 | unsigned long flags; |
| 757 | struct ib_sa_query *query; |
| 758 | unsigned long delay; |
| 759 | struct ib_mad_send_wc mad_send_wc; |
| 760 | int ret; |
| 761 | |
| 762 | spin_lock_irqsave(&ib_nl_request_lock, flags); |
| 763 | while (!list_empty(&ib_nl_request_list)) { |
| 764 | query = list_entry(ib_nl_request_list.next, |
| 765 | struct ib_sa_query, list); |
| 766 | |
| 767 | if (time_after(query->timeout, jiffies)) { |
| 768 | delay = query->timeout - jiffies; |
| 769 | if ((long)delay <= 0) |
| 770 | delay = 1; |
| 771 | queue_delayed_work(ib_nl_wq, &ib_nl_timed_work, delay); |
| 772 | break; |
| 773 | } |
| 774 | |
| 775 | list_del(&query->list); |
| 776 | ib_sa_disable_local_svc(query); |
| 777 | /* Hold the lock to protect against query cancellation */ |
| 778 | if (ib_sa_query_cancelled(query)) |
| 779 | ret = -1; |
| 780 | else |
| 781 | ret = ib_post_send_mad(query->mad_buf, NULL); |
| 782 | if (ret) { |
| 783 | mad_send_wc.send_buf = query->mad_buf; |
| 784 | mad_send_wc.status = IB_WC_WR_FLUSH_ERR; |
| 785 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); |
| 786 | send_handler(query->port->agent, &mad_send_wc); |
| 787 | spin_lock_irqsave(&ib_nl_request_lock, flags); |
| 788 | } |
| 789 | } |
| 790 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); |
| 791 | } |
| 792 | |
Mark Bloch | 735c631 | 2016-05-19 17:12:35 +0300 | [diff] [blame] | 793 | int ib_nl_handle_set_timeout(struct sk_buff *skb, |
| 794 | struct netlink_callback *cb) |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 795 | { |
| 796 | const struct nlmsghdr *nlh = (struct nlmsghdr *)cb->nlh; |
| 797 | int timeout, delta, abs_delta; |
| 798 | const struct nlattr *attr; |
| 799 | unsigned long flags; |
| 800 | struct ib_sa_query *query; |
| 801 | long delay = 0; |
| 802 | struct nlattr *tb[LS_NLA_TYPE_MAX]; |
| 803 | int ret; |
| 804 | |
Kaike Wan | 2deeb47 | 2016-01-21 08:41:31 -0500 | [diff] [blame] | 805 | if (!(nlh->nlmsg_flags & NLM_F_REQUEST) || |
| 806 | !(NETLINK_CB(skb).sk) || |
| 807 | !netlink_capable(skb, CAP_NET_ADMIN)) |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 808 | return -EPERM; |
| 809 | |
| 810 | ret = nla_parse(tb, LS_NLA_TYPE_MAX - 1, nlmsg_data(nlh), |
| 811 | nlmsg_len(nlh), ib_nl_policy); |
| 812 | attr = (const struct nlattr *)tb[LS_NLA_TYPE_TIMEOUT]; |
| 813 | if (ret || !attr) |
| 814 | goto settimeout_out; |
| 815 | |
| 816 | timeout = *(int *) nla_data(attr); |
| 817 | if (timeout < IB_SA_LOCAL_SVC_TIMEOUT_MIN) |
| 818 | timeout = IB_SA_LOCAL_SVC_TIMEOUT_MIN; |
| 819 | if (timeout > IB_SA_LOCAL_SVC_TIMEOUT_MAX) |
| 820 | timeout = IB_SA_LOCAL_SVC_TIMEOUT_MAX; |
| 821 | |
| 822 | delta = timeout - sa_local_svc_timeout_ms; |
| 823 | if (delta < 0) |
| 824 | abs_delta = -delta; |
| 825 | else |
| 826 | abs_delta = delta; |
| 827 | |
| 828 | if (delta != 0) { |
| 829 | spin_lock_irqsave(&ib_nl_request_lock, flags); |
| 830 | sa_local_svc_timeout_ms = timeout; |
| 831 | list_for_each_entry(query, &ib_nl_request_list, list) { |
| 832 | if (delta < 0 && abs_delta > query->timeout) |
| 833 | query->timeout = 0; |
| 834 | else |
| 835 | query->timeout += delta; |
| 836 | |
| 837 | /* Get the new delay from the first entry */ |
| 838 | if (!delay) { |
| 839 | delay = query->timeout - jiffies; |
| 840 | if (delay <= 0) |
| 841 | delay = 1; |
| 842 | } |
| 843 | } |
| 844 | if (delay) |
| 845 | mod_delayed_work(ib_nl_wq, &ib_nl_timed_work, |
| 846 | (unsigned long)delay); |
| 847 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); |
| 848 | } |
| 849 | |
| 850 | settimeout_out: |
| 851 | return skb->len; |
| 852 | } |
| 853 | |
| 854 | static inline int ib_nl_is_good_resolve_resp(const struct nlmsghdr *nlh) |
| 855 | { |
| 856 | struct nlattr *tb[LS_NLA_TYPE_MAX]; |
| 857 | int ret; |
| 858 | |
| 859 | if (nlh->nlmsg_flags & RDMA_NL_LS_F_ERR) |
| 860 | return 0; |
| 861 | |
| 862 | ret = nla_parse(tb, LS_NLA_TYPE_MAX - 1, nlmsg_data(nlh), |
| 863 | nlmsg_len(nlh), ib_nl_policy); |
| 864 | if (ret) |
| 865 | return 0; |
| 866 | |
| 867 | return 1; |
| 868 | } |
| 869 | |
Mark Bloch | 735c631 | 2016-05-19 17:12:35 +0300 | [diff] [blame] | 870 | int ib_nl_handle_resolve_resp(struct sk_buff *skb, |
| 871 | struct netlink_callback *cb) |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 872 | { |
| 873 | const struct nlmsghdr *nlh = (struct nlmsghdr *)cb->nlh; |
| 874 | unsigned long flags; |
| 875 | struct ib_sa_query *query; |
| 876 | struct ib_mad_send_buf *send_buf; |
| 877 | struct ib_mad_send_wc mad_send_wc; |
| 878 | int found = 0; |
| 879 | int ret; |
| 880 | |
Kaike Wan | 2deeb47 | 2016-01-21 08:41:31 -0500 | [diff] [blame] | 881 | if ((nlh->nlmsg_flags & NLM_F_REQUEST) || |
| 882 | !(NETLINK_CB(skb).sk) || |
| 883 | !netlink_capable(skb, CAP_NET_ADMIN)) |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 884 | return -EPERM; |
| 885 | |
| 886 | spin_lock_irqsave(&ib_nl_request_lock, flags); |
| 887 | list_for_each_entry(query, &ib_nl_request_list, list) { |
| 888 | /* |
| 889 | * If the query is cancelled, let the timeout routine |
| 890 | * take care of it. |
| 891 | */ |
| 892 | if (nlh->nlmsg_seq == query->seq) { |
| 893 | found = !ib_sa_query_cancelled(query); |
| 894 | if (found) |
| 895 | list_del(&query->list); |
| 896 | break; |
| 897 | } |
| 898 | } |
| 899 | |
| 900 | if (!found) { |
| 901 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); |
| 902 | goto resp_out; |
| 903 | } |
| 904 | |
| 905 | send_buf = query->mad_buf; |
| 906 | |
| 907 | if (!ib_nl_is_good_resolve_resp(nlh)) { |
| 908 | /* if the result is a failure, send out the packet via IB */ |
| 909 | ib_sa_disable_local_svc(query); |
| 910 | ret = ib_post_send_mad(query->mad_buf, NULL); |
| 911 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); |
| 912 | if (ret) { |
| 913 | mad_send_wc.send_buf = send_buf; |
| 914 | mad_send_wc.status = IB_WC_GENERAL_ERR; |
| 915 | send_handler(query->port->agent, &mad_send_wc); |
| 916 | } |
| 917 | } else { |
| 918 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); |
| 919 | ib_nl_process_good_resolve_rsp(query, nlh); |
| 920 | } |
| 921 | |
| 922 | resp_out: |
| 923 | return skb->len; |
| 924 | } |
| 925 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | static void free_sm_ah(struct kref *kref) |
| 927 | { |
| 928 | struct ib_sa_sm_ah *sm_ah = container_of(kref, struct ib_sa_sm_ah, ref); |
| 929 | |
| 930 | ib_destroy_ah(sm_ah->ah); |
| 931 | kfree(sm_ah); |
| 932 | } |
| 933 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 934 | static void update_sm_ah(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 936 | struct ib_sa_port *port = |
| 937 | container_of(work, struct ib_sa_port, update_task); |
Moni Shoua | 164ba08 | 2008-07-14 23:48:43 -0700 | [diff] [blame] | 938 | struct ib_sa_sm_ah *new_ah; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | struct ib_port_attr port_attr; |
| 940 | struct ib_ah_attr ah_attr; |
| 941 | |
| 942 | if (ib_query_port(port->agent->device, port->port_num, &port_attr)) { |
Parav Pandit | aba25a3e | 2016-03-02 00:50:29 +0530 | [diff] [blame] | 943 | pr_warn("Couldn't query port\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | return; |
| 945 | } |
| 946 | |
| 947 | new_ah = kmalloc(sizeof *new_ah, GFP_KERNEL); |
| 948 | if (!new_ah) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | return; |
| 950 | } |
| 951 | |
| 952 | kref_init(&new_ah->ref); |
Sean Hefty | d0e7bb1 | 2007-04-05 10:51:10 -0700 | [diff] [blame] | 953 | new_ah->src_path_mask = (1 << port_attr.lmc) - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | |
Sean Hefty | 2aec5c6 | 2007-06-18 11:03:58 -0700 | [diff] [blame] | 955 | new_ah->pkey_index = 0; |
| 956 | if (ib_find_pkey(port->agent->device, port->port_num, |
Roland Dreier | 5399891 | 2007-08-03 10:45:17 -0700 | [diff] [blame] | 957 | IB_DEFAULT_PKEY_FULL, &new_ah->pkey_index)) |
Parav Pandit | aba25a3e | 2016-03-02 00:50:29 +0530 | [diff] [blame] | 958 | pr_err("Couldn't find index for default PKey\n"); |
Sean Hefty | 2aec5c6 | 2007-06-18 11:03:58 -0700 | [diff] [blame] | 959 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | memset(&ah_attr, 0, sizeof ah_attr); |
| 961 | ah_attr.dlid = port_attr.sm_lid; |
| 962 | ah_attr.sl = port_attr.sm_sl; |
| 963 | ah_attr.port_num = port->port_num; |
Eli Cohen | a0c1b2a | 2016-03-11 22:58:37 +0200 | [diff] [blame] | 964 | if (port_attr.grh_required) { |
| 965 | ah_attr.ah_flags = IB_AH_GRH; |
| 966 | ah_attr.grh.dgid.global.subnet_prefix = cpu_to_be64(port_attr.subnet_prefix); |
| 967 | ah_attr.grh.dgid.global.interface_id = cpu_to_be64(IB_SA_WELL_KNOWN_GUID); |
| 968 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | |
| 970 | new_ah->ah = ib_create_ah(port->agent->qp->pd, &ah_attr); |
| 971 | if (IS_ERR(new_ah->ah)) { |
Parav Pandit | aba25a3e | 2016-03-02 00:50:29 +0530 | [diff] [blame] | 972 | pr_warn("Couldn't create new SM AH\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | kfree(new_ah); |
| 974 | return; |
| 975 | } |
| 976 | |
| 977 | spin_lock_irq(&port->ah_lock); |
Jack Morgenstein | 6b708b3 | 2009-03-03 14:30:01 -0800 | [diff] [blame] | 978 | if (port->sm_ah) |
| 979 | kref_put(&port->sm_ah->ref, free_sm_ah); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | port->sm_ah = new_ah; |
| 981 | spin_unlock_irq(&port->ah_lock); |
| 982 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | } |
| 984 | |
| 985 | static void ib_sa_event(struct ib_event_handler *handler, struct ib_event *event) |
| 986 | { |
| 987 | if (event->event == IB_EVENT_PORT_ERR || |
| 988 | event->event == IB_EVENT_PORT_ACTIVE || |
| 989 | event->event == IB_EVENT_LID_CHANGE || |
| 990 | event->event == IB_EVENT_PKEY_CHANGE || |
Jack Morgenstein | acaea9e | 2006-08-15 17:20:50 +0300 | [diff] [blame] | 991 | event->event == IB_EVENT_SM_CHANGE || |
| 992 | event->event == IB_EVENT_CLIENT_REREGISTER) { |
Moni Shoua | 164ba08 | 2008-07-14 23:48:43 -0700 | [diff] [blame] | 993 | unsigned long flags; |
| 994 | struct ib_sa_device *sa_dev = |
| 995 | container_of(handler, typeof(*sa_dev), event_handler); |
| 996 | struct ib_sa_port *port = |
| 997 | &sa_dev->port[event->element.port_num - sa_dev->start_port]; |
| 998 | |
Moni Shoua | 9247a8e | 2015-06-10 12:13:32 +0300 | [diff] [blame] | 999 | if (!rdma_cap_ib_sa(handler->device, port->port_num)) |
Eli Cohen | fac70d5 | 2010-09-27 17:51:11 -0700 | [diff] [blame] | 1000 | return; |
| 1001 | |
Moni Shoua | 164ba08 | 2008-07-14 23:48:43 -0700 | [diff] [blame] | 1002 | spin_lock_irqsave(&port->ah_lock, flags); |
| 1003 | if (port->sm_ah) |
| 1004 | kref_put(&port->sm_ah->ref, free_sm_ah); |
| 1005 | port->sm_ah = NULL; |
| 1006 | spin_unlock_irqrestore(&port->ah_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | |
Alex Vesker | 3d3fd74 | 2016-07-06 16:36:34 +0300 | [diff] [blame] | 1008 | if (event->event == IB_EVENT_SM_CHANGE || |
| 1009 | event->event == IB_EVENT_CLIENT_REREGISTER || |
| 1010 | event->event == IB_EVENT_LID_CHANGE) { |
| 1011 | spin_lock_irqsave(&port->classport_lock, flags); |
| 1012 | port->classport_info.valid = false; |
| 1013 | spin_unlock_irqrestore(&port->classport_lock, flags); |
| 1014 | } |
Tejun Heo | f062671 | 2010-10-19 15:24:36 +0000 | [diff] [blame] | 1015 | queue_work(ib_wq, &sa_dev->port[event->element.port_num - |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | sa_dev->start_port].update_task); |
| 1017 | } |
| 1018 | } |
| 1019 | |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1020 | void ib_sa_register_client(struct ib_sa_client *client) |
| 1021 | { |
| 1022 | atomic_set(&client->users, 1); |
| 1023 | init_completion(&client->comp); |
| 1024 | } |
| 1025 | EXPORT_SYMBOL(ib_sa_register_client); |
| 1026 | |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1027 | void ib_sa_unregister_client(struct ib_sa_client *client) |
| 1028 | { |
| 1029 | ib_sa_client_put(client); |
| 1030 | wait_for_completion(&client->comp); |
| 1031 | } |
| 1032 | EXPORT_SYMBOL(ib_sa_unregister_client); |
| 1033 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | /** |
| 1035 | * ib_sa_cancel_query - try to cancel an SA query |
| 1036 | * @id:ID of query to cancel |
| 1037 | * @query:query pointer to cancel |
| 1038 | * |
| 1039 | * Try to cancel an SA query. If the id and query don't match up or |
| 1040 | * the query has already completed, nothing is done. Otherwise the |
| 1041 | * query is canceled and will complete with a status of -EINTR. |
| 1042 | */ |
| 1043 | void ib_sa_cancel_query(int id, struct ib_sa_query *query) |
| 1044 | { |
| 1045 | unsigned long flags; |
| 1046 | struct ib_mad_agent *agent; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1047 | struct ib_mad_send_buf *mad_buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | |
| 1049 | spin_lock_irqsave(&idr_lock, flags); |
| 1050 | if (idr_find(&query_idr, id) != query) { |
| 1051 | spin_unlock_irqrestore(&idr_lock, flags); |
| 1052 | return; |
| 1053 | } |
| 1054 | agent = query->port->agent; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1055 | mad_buf = query->mad_buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | spin_unlock_irqrestore(&idr_lock, flags); |
| 1057 | |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 1058 | /* |
| 1059 | * If the query is still on the netlink request list, schedule |
| 1060 | * it to be cancelled by the timeout routine. Otherwise, it has been |
| 1061 | * sent to the MAD layer and has to be cancelled from there. |
| 1062 | */ |
| 1063 | if (!ib_nl_cancel_request(query)) |
| 1064 | ib_cancel_mad(agent, mad_buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | } |
| 1066 | EXPORT_SYMBOL(ib_sa_cancel_query); |
| 1067 | |
Sean Hefty | d0e7bb1 | 2007-04-05 10:51:10 -0700 | [diff] [blame] | 1068 | static u8 get_src_path_mask(struct ib_device *device, u8 port_num) |
| 1069 | { |
| 1070 | struct ib_sa_device *sa_dev; |
| 1071 | struct ib_sa_port *port; |
| 1072 | unsigned long flags; |
| 1073 | u8 src_path_mask; |
| 1074 | |
| 1075 | sa_dev = ib_get_client_data(device, &sa_client); |
| 1076 | if (!sa_dev) |
| 1077 | return 0x7f; |
| 1078 | |
| 1079 | port = &sa_dev->port[port_num - sa_dev->start_port]; |
| 1080 | spin_lock_irqsave(&port->ah_lock, flags); |
| 1081 | src_path_mask = port->sm_ah ? port->sm_ah->src_path_mask : 0x7f; |
| 1082 | spin_unlock_irqrestore(&port->ah_lock, flags); |
| 1083 | |
| 1084 | return src_path_mask; |
| 1085 | } |
| 1086 | |
Sean Hefty | 6d969a4 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 1087 | int ib_init_ah_from_path(struct ib_device *device, u8 port_num, |
| 1088 | struct ib_sa_path_rec *rec, struct ib_ah_attr *ah_attr) |
| 1089 | { |
| 1090 | int ret; |
| 1091 | u16 gid_index; |
Matan Barak | 2002983 | 2015-12-23 14:56:53 +0200 | [diff] [blame] | 1092 | int use_roce; |
| 1093 | struct net_device *ndev = NULL; |
Sean Hefty | 6d969a4 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 1094 | |
| 1095 | memset(ah_attr, 0, sizeof *ah_attr); |
| 1096 | ah_attr->dlid = be16_to_cpu(rec->dlid); |
| 1097 | ah_attr->sl = rec->sl; |
Sean Hefty | d0e7bb1 | 2007-04-05 10:51:10 -0700 | [diff] [blame] | 1098 | ah_attr->src_path_bits = be16_to_cpu(rec->slid) & |
| 1099 | get_src_path_mask(device, port_num); |
Sean Hefty | 6d969a4 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 1100 | ah_attr->port_num = port_num; |
Roland Dreier | 7084f84 | 2007-02-16 15:31:24 -0800 | [diff] [blame] | 1101 | ah_attr->static_rate = rec->rate; |
Sean Hefty | 6d969a4 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 1102 | |
Matan Barak | 2002983 | 2015-12-23 14:56:53 +0200 | [diff] [blame] | 1103 | use_roce = rdma_cap_eth_ah(device, port_num); |
Eli Cohen | 3c86aa7 | 2010-10-13 21:26:51 +0200 | [diff] [blame] | 1104 | |
Matan Barak | 2002983 | 2015-12-23 14:56:53 +0200 | [diff] [blame] | 1105 | if (use_roce) { |
| 1106 | struct net_device *idev; |
| 1107 | struct net_device *resolved_dev; |
| 1108 | struct rdma_dev_addr dev_addr = {.bound_dev_if = rec->ifindex, |
| 1109 | .net = rec->net ? rec->net : |
| 1110 | &init_net}; |
| 1111 | union { |
Matan Barak | 2002983 | 2015-12-23 14:56:53 +0200 | [diff] [blame] | 1112 | struct sockaddr_in _sockaddr_in; |
| 1113 | struct sockaddr_in6 _sockaddr_in6; |
| 1114 | } sgid_addr, dgid_addr; |
Matan Barak | ba36e37 | 2015-10-15 18:38:47 +0300 | [diff] [blame] | 1115 | |
Matan Barak | 2002983 | 2015-12-23 14:56:53 +0200 | [diff] [blame] | 1116 | if (!device->get_netdev) |
| 1117 | return -EOPNOTSUPP; |
| 1118 | |
Greg Kroah-Hartman | d41d78c | 2019-08-07 18:44:12 +0200 | [diff] [blame] | 1119 | rdma_gid2ip((struct sockaddr *)&sgid_addr, &rec->sgid); |
| 1120 | rdma_gid2ip((struct sockaddr *)&dgid_addr, &rec->dgid); |
Matan Barak | 2002983 | 2015-12-23 14:56:53 +0200 | [diff] [blame] | 1121 | |
| 1122 | /* validate the route */ |
Greg Kroah-Hartman | d41d78c | 2019-08-07 18:44:12 +0200 | [diff] [blame] | 1123 | ret = rdma_resolve_ip_route((struct sockaddr *)&sgid_addr, |
| 1124 | (struct sockaddr *)&dgid_addr, |
| 1125 | &dev_addr); |
Matan Barak | 2002983 | 2015-12-23 14:56:53 +0200 | [diff] [blame] | 1126 | if (ret) |
| 1127 | return ret; |
| 1128 | |
| 1129 | if ((dev_addr.network == RDMA_NETWORK_IPV4 || |
| 1130 | dev_addr.network == RDMA_NETWORK_IPV6) && |
| 1131 | rec->gid_type != IB_GID_TYPE_ROCE_UDP_ENCAP) |
| 1132 | return -EINVAL; |
| 1133 | |
| 1134 | idev = device->get_netdev(device, port_num); |
| 1135 | if (!idev) |
| 1136 | return -ENODEV; |
| 1137 | |
| 1138 | resolved_dev = dev_get_by_index(dev_addr.net, |
| 1139 | dev_addr.bound_dev_if); |
Parav Pandit | 9bcfd1c | 2018-03-07 08:07:41 +0200 | [diff] [blame] | 1140 | if (!resolved_dev) { |
| 1141 | dev_put(idev); |
| 1142 | return -ENODEV; |
Matan Barak | 2002983 | 2015-12-23 14:56:53 +0200 | [diff] [blame] | 1143 | } |
| 1144 | ndev = ib_get_ndev_from_path(rec); |
| 1145 | rcu_read_lock(); |
| 1146 | if ((ndev && ndev != resolved_dev) || |
| 1147 | (resolved_dev != idev && |
| 1148 | !rdma_is_upper_dev_rcu(idev, resolved_dev))) |
| 1149 | ret = -EHOSTUNREACH; |
| 1150 | rcu_read_unlock(); |
| 1151 | dev_put(idev); |
| 1152 | dev_put(resolved_dev); |
| 1153 | if (ret) { |
| 1154 | if (ndev) |
| 1155 | dev_put(ndev); |
| 1156 | return ret; |
| 1157 | } |
| 1158 | } |
| 1159 | |
Or Gerlitz | 11d8d64 | 2016-03-01 18:52:23 +0200 | [diff] [blame] | 1160 | if (rec->hop_limit > 0 || use_roce) { |
Sean Hefty | 6d969a4 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 1161 | ah_attr->ah_flags = IB_AH_GRH; |
| 1162 | ah_attr->grh.dgid = rec->dgid; |
| 1163 | |
Matan Barak | 2002983 | 2015-12-23 14:56:53 +0200 | [diff] [blame] | 1164 | ret = ib_find_cached_gid_by_port(device, &rec->sgid, |
| 1165 | rec->gid_type, port_num, ndev, |
| 1166 | &gid_index); |
Matan Barak | ba36e37 | 2015-10-15 18:38:47 +0300 | [diff] [blame] | 1167 | if (ret) { |
| 1168 | if (ndev) |
| 1169 | dev_put(ndev); |
Sean Hefty | 6d969a4 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 1170 | return ret; |
Matan Barak | ba36e37 | 2015-10-15 18:38:47 +0300 | [diff] [blame] | 1171 | } |
Sean Hefty | 6d969a4 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 1172 | |
Sean Hefty | ca222c6 | 2006-06-17 20:37:40 -0700 | [diff] [blame] | 1173 | ah_attr->grh.sgid_index = gid_index; |
| 1174 | ah_attr->grh.flow_label = be32_to_cpu(rec->flow_label); |
| 1175 | ah_attr->grh.hop_limit = rec->hop_limit; |
Sean Hefty | 6d969a4 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 1176 | ah_attr->grh.traffic_class = rec->traffic_class; |
Matan Barak | ba36e37 | 2015-10-15 18:38:47 +0300 | [diff] [blame] | 1177 | if (ndev) |
| 1178 | dev_put(ndev); |
Sean Hefty | 6d969a4 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 1179 | } |
Matan Barak | 2002983 | 2015-12-23 14:56:53 +0200 | [diff] [blame] | 1180 | |
| 1181 | if (use_roce) |
Matan Barak | dd5f03b | 2013-12-12 18:03:11 +0200 | [diff] [blame] | 1182 | memcpy(ah_attr->dmac, rec->dmac, ETH_ALEN); |
Matan Barak | 2002983 | 2015-12-23 14:56:53 +0200 | [diff] [blame] | 1183 | |
Sean Hefty | 6d969a4 | 2006-06-17 20:37:39 -0700 | [diff] [blame] | 1184 | return 0; |
| 1185 | } |
| 1186 | EXPORT_SYMBOL(ib_init_ah_from_path); |
| 1187 | |
Sean Hefty | 2aec5c6 | 2007-06-18 11:03:58 -0700 | [diff] [blame] | 1188 | static int alloc_mad(struct ib_sa_query *query, gfp_t gfp_mask) |
| 1189 | { |
| 1190 | unsigned long flags; |
| 1191 | |
| 1192 | spin_lock_irqsave(&query->port->ah_lock, flags); |
Moni Shoua | 164ba08 | 2008-07-14 23:48:43 -0700 | [diff] [blame] | 1193 | if (!query->port->sm_ah) { |
| 1194 | spin_unlock_irqrestore(&query->port->ah_lock, flags); |
| 1195 | return -EAGAIN; |
| 1196 | } |
Sean Hefty | 2aec5c6 | 2007-06-18 11:03:58 -0700 | [diff] [blame] | 1197 | kref_get(&query->port->sm_ah->ref); |
| 1198 | query->sm_ah = query->port->sm_ah; |
| 1199 | spin_unlock_irqrestore(&query->port->ah_lock, flags); |
| 1200 | |
| 1201 | query->mad_buf = ib_create_send_mad(query->port->agent, 1, |
| 1202 | query->sm_ah->pkey_index, |
| 1203 | 0, IB_MGMT_SA_HDR, IB_MGMT_SA_DATA, |
Ira Weiny | da2dfaa | 2015-06-06 14:38:28 -0400 | [diff] [blame] | 1204 | gfp_mask, |
| 1205 | IB_MGMT_BASE_VERSION); |
Ali Ayoub | 3c10c7c | 2007-09-09 14:55:11 +0300 | [diff] [blame] | 1206 | if (IS_ERR(query->mad_buf)) { |
Sean Hefty | 2aec5c6 | 2007-06-18 11:03:58 -0700 | [diff] [blame] | 1207 | kref_put(&query->sm_ah->ref, free_sm_ah); |
| 1208 | return -ENOMEM; |
| 1209 | } |
| 1210 | |
| 1211 | query->mad_buf->ah = query->sm_ah->ah; |
| 1212 | |
| 1213 | return 0; |
| 1214 | } |
| 1215 | |
| 1216 | static void free_mad(struct ib_sa_query *query) |
| 1217 | { |
| 1218 | ib_free_send_mad(query->mad_buf); |
| 1219 | kref_put(&query->sm_ah->ref, free_sm_ah); |
| 1220 | } |
| 1221 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | static void init_mad(struct ib_sa_mad *mad, struct ib_mad_agent *agent) |
| 1223 | { |
| 1224 | unsigned long flags; |
| 1225 | |
| 1226 | memset(mad, 0, sizeof *mad); |
| 1227 | |
| 1228 | mad->mad_hdr.base_version = IB_MGMT_BASE_VERSION; |
| 1229 | mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_SUBN_ADM; |
| 1230 | mad->mad_hdr.class_version = IB_SA_CLASS_VERSION; |
| 1231 | |
| 1232 | spin_lock_irqsave(&tid_lock, flags); |
| 1233 | mad->mad_hdr.tid = |
| 1234 | cpu_to_be64(((u64) agent->hi_tid) << 32 | tid++); |
| 1235 | spin_unlock_irqrestore(&tid_lock, flags); |
| 1236 | } |
| 1237 | |
Michael S. Tsirkin | e322fed | 2006-07-14 00:23:56 -0700 | [diff] [blame] | 1238 | static int send_mad(struct ib_sa_query *query, int timeout_ms, gfp_t gfp_mask) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | { |
Mel Gorman | d0164ad | 2015-11-06 16:28:21 -0800 | [diff] [blame] | 1240 | bool preload = gfpflags_allow_blocking(gfp_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1241 | unsigned long flags; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1242 | int ret, id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | |
Tejun Heo | 3b069c5 | 2013-02-27 17:04:16 -0800 | [diff] [blame] | 1244 | if (preload) |
| 1245 | idr_preload(gfp_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1246 | spin_lock_irqsave(&idr_lock, flags); |
Tejun Heo | 3b069c5 | 2013-02-27 17:04:16 -0800 | [diff] [blame] | 1247 | |
| 1248 | id = idr_alloc(&query_idr, query, 0, 0, GFP_NOWAIT); |
| 1249 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | spin_unlock_irqrestore(&idr_lock, flags); |
Tejun Heo | 3b069c5 | 2013-02-27 17:04:16 -0800 | [diff] [blame] | 1251 | if (preload) |
| 1252 | idr_preload_end(); |
| 1253 | if (id < 0) |
| 1254 | return id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1255 | |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1256 | query->mad_buf->timeout_ms = timeout_ms; |
| 1257 | query->mad_buf->context[0] = query; |
| 1258 | query->id = id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1259 | |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 1260 | if (query->flags & IB_SA_ENABLE_LOCAL_SERVICE) { |
| 1261 | if (!ibnl_chk_listeners(RDMA_NL_GROUP_LS)) { |
Kaike Wan | 3ebd2fd | 2015-10-30 08:23:45 -0400 | [diff] [blame] | 1262 | if (!ib_nl_make_request(query, gfp_mask)) |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 1263 | return id; |
| 1264 | } |
| 1265 | ib_sa_disable_local_svc(query); |
| 1266 | } |
| 1267 | |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1268 | ret = ib_post_send_mad(query->mad_buf, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1269 | if (ret) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1270 | spin_lock_irqsave(&idr_lock, flags); |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1271 | idr_remove(&query_idr, id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | spin_unlock_irqrestore(&idr_lock, flags); |
| 1273 | } |
| 1274 | |
Roland Dreier | dae4c1d | 2005-06-27 14:36:46 -0700 | [diff] [blame] | 1275 | /* |
| 1276 | * It's not safe to dereference query any more, because the |
| 1277 | * send may already have completed and freed the query in |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1278 | * another context. |
Roland Dreier | dae4c1d | 2005-06-27 14:36:46 -0700 | [diff] [blame] | 1279 | */ |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1280 | return ret ? ret : id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1281 | } |
| 1282 | |
Sean Hefty | a7ca1f0 | 2009-11-16 09:30:33 -0800 | [diff] [blame] | 1283 | void ib_sa_unpack_path(void *attribute, struct ib_sa_path_rec *rec) |
| 1284 | { |
| 1285 | ib_unpack(path_rec_table, ARRAY_SIZE(path_rec_table), attribute, rec); |
| 1286 | } |
| 1287 | EXPORT_SYMBOL(ib_sa_unpack_path); |
| 1288 | |
Sean Hefty | 2e08b58 | 2013-05-29 10:09:26 -0700 | [diff] [blame] | 1289 | void ib_sa_pack_path(struct ib_sa_path_rec *rec, void *attribute) |
| 1290 | { |
| 1291 | ib_pack(path_rec_table, ARRAY_SIZE(path_rec_table), rec, attribute); |
| 1292 | } |
| 1293 | EXPORT_SYMBOL(ib_sa_pack_path); |
| 1294 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | static void ib_sa_path_rec_callback(struct ib_sa_query *sa_query, |
| 1296 | int status, |
| 1297 | struct ib_sa_mad *mad) |
| 1298 | { |
| 1299 | struct ib_sa_path_query *query = |
| 1300 | container_of(sa_query, struct ib_sa_path_query, sa_query); |
| 1301 | |
| 1302 | if (mad) { |
| 1303 | struct ib_sa_path_rec rec; |
| 1304 | |
| 1305 | ib_unpack(path_rec_table, ARRAY_SIZE(path_rec_table), |
| 1306 | mad->data, &rec); |
Matan Barak | ba36e37 | 2015-10-15 18:38:47 +0300 | [diff] [blame] | 1307 | rec.net = NULL; |
| 1308 | rec.ifindex = 0; |
Matan Barak | b39ffa1 | 2015-12-23 14:56:47 +0200 | [diff] [blame] | 1309 | rec.gid_type = IB_GID_TYPE_IB; |
Amitoj Kaur Chawla | db9314c | 2016-02-12 13:16:10 +0530 | [diff] [blame] | 1310 | eth_zero_addr(rec.dmac); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | query->callback(status, &rec, query->context); |
| 1312 | } else |
| 1313 | query->callback(status, NULL, query->context); |
| 1314 | } |
| 1315 | |
| 1316 | static void ib_sa_path_rec_release(struct ib_sa_query *sa_query) |
| 1317 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1318 | kfree(container_of(sa_query, struct ib_sa_path_query, sa_query)); |
| 1319 | } |
| 1320 | |
| 1321 | /** |
| 1322 | * ib_sa_path_rec_get - Start a Path get query |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1323 | * @client:SA client |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | * @device:device to send query on |
| 1325 | * @port_num: port number to send query on |
| 1326 | * @rec:Path Record to send in query |
| 1327 | * @comp_mask:component mask to send in query |
| 1328 | * @timeout_ms:time to wait for response |
| 1329 | * @gfp_mask:GFP mask to use for internal allocations |
| 1330 | * @callback:function called when query completes, times out or is |
| 1331 | * canceled |
| 1332 | * @context:opaque user context passed to callback |
| 1333 | * @sa_query:query context, used to cancel query |
| 1334 | * |
| 1335 | * Send a Path Record Get query to the SA to look up a path. The |
| 1336 | * callback function will be called when the query completes (or |
| 1337 | * fails); status is 0 for a successful response, -EINTR if the query |
| 1338 | * is canceled, -ETIMEDOUT is the query timed out, or -EIO if an error |
| 1339 | * occurred sending the query. The resp parameter of the callback is |
| 1340 | * only valid if status is 0. |
| 1341 | * |
| 1342 | * If the return value of ib_sa_path_rec_get() is negative, it is an |
| 1343 | * error code. Otherwise it is a query ID that can be used to cancel |
| 1344 | * the query. |
| 1345 | */ |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1346 | int ib_sa_path_rec_get(struct ib_sa_client *client, |
| 1347 | struct ib_device *device, u8 port_num, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1348 | struct ib_sa_path_rec *rec, |
| 1349 | ib_sa_comp_mask comp_mask, |
Al Viro | dd0fc66 | 2005-10-07 07:46:04 +0100 | [diff] [blame] | 1350 | int timeout_ms, gfp_t gfp_mask, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1351 | void (*callback)(int status, |
| 1352 | struct ib_sa_path_rec *resp, |
| 1353 | void *context), |
| 1354 | void *context, |
| 1355 | struct ib_sa_query **sa_query) |
| 1356 | { |
| 1357 | struct ib_sa_path_query *query; |
| 1358 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); |
Roland Dreier | 56c202d | 2005-10-13 10:45:02 -0700 | [diff] [blame] | 1359 | struct ib_sa_port *port; |
| 1360 | struct ib_mad_agent *agent; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1361 | struct ib_sa_mad *mad; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1362 | int ret; |
| 1363 | |
Roland Dreier | 56c202d | 2005-10-13 10:45:02 -0700 | [diff] [blame] | 1364 | if (!sa_dev) |
| 1365 | return -ENODEV; |
| 1366 | |
| 1367 | port = &sa_dev->port[port_num - sa_dev->start_port]; |
| 1368 | agent = port->agent; |
| 1369 | |
Kaike Wan | 5d26577 | 2015-08-14 08:52:08 -0400 | [diff] [blame] | 1370 | query = kzalloc(sizeof(*query), gfp_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | if (!query) |
| 1372 | return -ENOMEM; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1373 | |
Sean Hefty | 2aec5c6 | 2007-06-18 11:03:58 -0700 | [diff] [blame] | 1374 | query->sa_query.port = port; |
| 1375 | ret = alloc_mad(&query->sa_query, gfp_mask); |
| 1376 | if (ret) |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1377 | goto err1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1379 | ib_sa_client_get(client); |
| 1380 | query->sa_query.client = client; |
| 1381 | query->callback = callback; |
| 1382 | query->context = context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1384 | mad = query->sa_query.mad_buf->mad; |
| 1385 | init_mad(mad, agent); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1387 | query->sa_query.callback = callback ? ib_sa_path_rec_callback : NULL; |
| 1388 | query->sa_query.release = ib_sa_path_rec_release; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1389 | mad->mad_hdr.method = IB_MGMT_METHOD_GET; |
| 1390 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_PATH_REC); |
| 1391 | mad->sa_hdr.comp_mask = comp_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1392 | |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1393 | ib_pack(path_rec_table, ARRAY_SIZE(path_rec_table), rec, mad->data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1394 | |
| 1395 | *sa_query = &query->sa_query; |
Roland Dreier | dae4c1d | 2005-06-27 14:36:46 -0700 | [diff] [blame] | 1396 | |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 1397 | query->sa_query.flags |= IB_SA_ENABLE_LOCAL_SERVICE; |
| 1398 | query->sa_query.mad_buf->context[1] = rec; |
| 1399 | |
Michael S. Tsirkin | e322fed | 2006-07-14 00:23:56 -0700 | [diff] [blame] | 1400 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1401 | if (ret < 0) |
| 1402 | goto err2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1403 | |
Roland Dreier | dae4c1d | 2005-06-27 14:36:46 -0700 | [diff] [blame] | 1404 | return ret; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1405 | |
| 1406 | err2: |
| 1407 | *sa_query = NULL; |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1408 | ib_sa_client_put(query->sa_query.client); |
Sean Hefty | 2aec5c6 | 2007-06-18 11:03:58 -0700 | [diff] [blame] | 1409 | free_mad(&query->sa_query); |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1410 | |
| 1411 | err1: |
| 1412 | kfree(query); |
| 1413 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1414 | } |
| 1415 | EXPORT_SYMBOL(ib_sa_path_rec_get); |
| 1416 | |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 1417 | static void ib_sa_service_rec_callback(struct ib_sa_query *sa_query, |
| 1418 | int status, |
| 1419 | struct ib_sa_mad *mad) |
| 1420 | { |
| 1421 | struct ib_sa_service_query *query = |
| 1422 | container_of(sa_query, struct ib_sa_service_query, sa_query); |
| 1423 | |
| 1424 | if (mad) { |
| 1425 | struct ib_sa_service_rec rec; |
| 1426 | |
| 1427 | ib_unpack(service_rec_table, ARRAY_SIZE(service_rec_table), |
| 1428 | mad->data, &rec); |
| 1429 | query->callback(status, &rec, query->context); |
| 1430 | } else |
| 1431 | query->callback(status, NULL, query->context); |
| 1432 | } |
| 1433 | |
| 1434 | static void ib_sa_service_rec_release(struct ib_sa_query *sa_query) |
| 1435 | { |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 1436 | kfree(container_of(sa_query, struct ib_sa_service_query, sa_query)); |
| 1437 | } |
| 1438 | |
| 1439 | /** |
| 1440 | * ib_sa_service_rec_query - Start Service Record operation |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1441 | * @client:SA client |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 1442 | * @device:device to send request on |
| 1443 | * @port_num: port number to send request on |
| 1444 | * @method:SA method - should be get, set, or delete |
| 1445 | * @rec:Service Record to send in request |
| 1446 | * @comp_mask:component mask to send in request |
| 1447 | * @timeout_ms:time to wait for response |
| 1448 | * @gfp_mask:GFP mask to use for internal allocations |
| 1449 | * @callback:function called when request completes, times out or is |
| 1450 | * canceled |
| 1451 | * @context:opaque user context passed to callback |
| 1452 | * @sa_query:request context, used to cancel request |
| 1453 | * |
| 1454 | * Send a Service Record set/get/delete to the SA to register, |
| 1455 | * unregister or query a service record. |
| 1456 | * The callback function will be called when the request completes (or |
| 1457 | * fails); status is 0 for a successful response, -EINTR if the query |
| 1458 | * is canceled, -ETIMEDOUT is the query timed out, or -EIO if an error |
| 1459 | * occurred sending the query. The resp parameter of the callback is |
| 1460 | * only valid if status is 0. |
| 1461 | * |
| 1462 | * If the return value of ib_sa_service_rec_query() is negative, it is an |
| 1463 | * error code. Otherwise it is a request ID that can be used to cancel |
| 1464 | * the query. |
| 1465 | */ |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1466 | int ib_sa_service_rec_query(struct ib_sa_client *client, |
| 1467 | struct ib_device *device, u8 port_num, u8 method, |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 1468 | struct ib_sa_service_rec *rec, |
| 1469 | ib_sa_comp_mask comp_mask, |
Al Viro | dd0fc66 | 2005-10-07 07:46:04 +0100 | [diff] [blame] | 1470 | int timeout_ms, gfp_t gfp_mask, |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 1471 | void (*callback)(int status, |
| 1472 | struct ib_sa_service_rec *resp, |
| 1473 | void *context), |
| 1474 | void *context, |
| 1475 | struct ib_sa_query **sa_query) |
| 1476 | { |
| 1477 | struct ib_sa_service_query *query; |
| 1478 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); |
Roland Dreier | 56c202d | 2005-10-13 10:45:02 -0700 | [diff] [blame] | 1479 | struct ib_sa_port *port; |
| 1480 | struct ib_mad_agent *agent; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1481 | struct ib_sa_mad *mad; |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 1482 | int ret; |
| 1483 | |
Roland Dreier | 56c202d | 2005-10-13 10:45:02 -0700 | [diff] [blame] | 1484 | if (!sa_dev) |
| 1485 | return -ENODEV; |
| 1486 | |
| 1487 | port = &sa_dev->port[port_num - sa_dev->start_port]; |
| 1488 | agent = port->agent; |
| 1489 | |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 1490 | if (method != IB_MGMT_METHOD_GET && |
| 1491 | method != IB_MGMT_METHOD_SET && |
| 1492 | method != IB_SA_METHOD_DELETE) |
| 1493 | return -EINVAL; |
| 1494 | |
Kaike Wan | 5d26577 | 2015-08-14 08:52:08 -0400 | [diff] [blame] | 1495 | query = kzalloc(sizeof(*query), gfp_mask); |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 1496 | if (!query) |
| 1497 | return -ENOMEM; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1498 | |
Sean Hefty | 2aec5c6 | 2007-06-18 11:03:58 -0700 | [diff] [blame] | 1499 | query->sa_query.port = port; |
| 1500 | ret = alloc_mad(&query->sa_query, gfp_mask); |
| 1501 | if (ret) |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1502 | goto err1; |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 1503 | |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1504 | ib_sa_client_get(client); |
| 1505 | query->sa_query.client = client; |
| 1506 | query->callback = callback; |
| 1507 | query->context = context; |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 1508 | |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1509 | mad = query->sa_query.mad_buf->mad; |
| 1510 | init_mad(mad, agent); |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 1511 | |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1512 | query->sa_query.callback = callback ? ib_sa_service_rec_callback : NULL; |
| 1513 | query->sa_query.release = ib_sa_service_rec_release; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1514 | mad->mad_hdr.method = method; |
| 1515 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_SERVICE_REC); |
| 1516 | mad->sa_hdr.comp_mask = comp_mask; |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 1517 | |
| 1518 | ib_pack(service_rec_table, ARRAY_SIZE(service_rec_table), |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1519 | rec, mad->data); |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 1520 | |
| 1521 | *sa_query = &query->sa_query; |
| 1522 | |
Michael S. Tsirkin | e322fed | 2006-07-14 00:23:56 -0700 | [diff] [blame] | 1523 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1524 | if (ret < 0) |
| 1525 | goto err2; |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 1526 | |
| 1527 | return ret; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1528 | |
| 1529 | err2: |
| 1530 | *sa_query = NULL; |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1531 | ib_sa_client_put(query->sa_query.client); |
Sean Hefty | 2aec5c6 | 2007-06-18 11:03:58 -0700 | [diff] [blame] | 1532 | free_mad(&query->sa_query); |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1533 | |
| 1534 | err1: |
| 1535 | kfree(query); |
| 1536 | return ret; |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 1537 | } |
| 1538 | EXPORT_SYMBOL(ib_sa_service_rec_query); |
| 1539 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1540 | static void ib_sa_mcmember_rec_callback(struct ib_sa_query *sa_query, |
| 1541 | int status, |
| 1542 | struct ib_sa_mad *mad) |
| 1543 | { |
| 1544 | struct ib_sa_mcmember_query *query = |
| 1545 | container_of(sa_query, struct ib_sa_mcmember_query, sa_query); |
| 1546 | |
| 1547 | if (mad) { |
| 1548 | struct ib_sa_mcmember_rec rec; |
| 1549 | |
| 1550 | ib_unpack(mcmember_rec_table, ARRAY_SIZE(mcmember_rec_table), |
| 1551 | mad->data, &rec); |
| 1552 | query->callback(status, &rec, query->context); |
| 1553 | } else |
| 1554 | query->callback(status, NULL, query->context); |
| 1555 | } |
| 1556 | |
| 1557 | static void ib_sa_mcmember_rec_release(struct ib_sa_query *sa_query) |
| 1558 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1559 | kfree(container_of(sa_query, struct ib_sa_mcmember_query, sa_query)); |
| 1560 | } |
| 1561 | |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1562 | int ib_sa_mcmember_rec_query(struct ib_sa_client *client, |
| 1563 | struct ib_device *device, u8 port_num, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | u8 method, |
| 1565 | struct ib_sa_mcmember_rec *rec, |
| 1566 | ib_sa_comp_mask comp_mask, |
Al Viro | dd0fc66 | 2005-10-07 07:46:04 +0100 | [diff] [blame] | 1567 | int timeout_ms, gfp_t gfp_mask, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1568 | void (*callback)(int status, |
| 1569 | struct ib_sa_mcmember_rec *resp, |
| 1570 | void *context), |
| 1571 | void *context, |
| 1572 | struct ib_sa_query **sa_query) |
| 1573 | { |
| 1574 | struct ib_sa_mcmember_query *query; |
| 1575 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); |
Roland Dreier | 56c202d | 2005-10-13 10:45:02 -0700 | [diff] [blame] | 1576 | struct ib_sa_port *port; |
| 1577 | struct ib_mad_agent *agent; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1578 | struct ib_sa_mad *mad; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1579 | int ret; |
| 1580 | |
Roland Dreier | 56c202d | 2005-10-13 10:45:02 -0700 | [diff] [blame] | 1581 | if (!sa_dev) |
| 1582 | return -ENODEV; |
| 1583 | |
| 1584 | port = &sa_dev->port[port_num - sa_dev->start_port]; |
| 1585 | agent = port->agent; |
| 1586 | |
Kaike Wan | 5d26577 | 2015-08-14 08:52:08 -0400 | [diff] [blame] | 1587 | query = kzalloc(sizeof(*query), gfp_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1588 | if (!query) |
| 1589 | return -ENOMEM; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1590 | |
Sean Hefty | 2aec5c6 | 2007-06-18 11:03:58 -0700 | [diff] [blame] | 1591 | query->sa_query.port = port; |
| 1592 | ret = alloc_mad(&query->sa_query, gfp_mask); |
| 1593 | if (ret) |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1594 | goto err1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1595 | |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1596 | ib_sa_client_get(client); |
| 1597 | query->sa_query.client = client; |
| 1598 | query->callback = callback; |
| 1599 | query->context = context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1600 | |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1601 | mad = query->sa_query.mad_buf->mad; |
| 1602 | init_mad(mad, agent); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1603 | |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1604 | query->sa_query.callback = callback ? ib_sa_mcmember_rec_callback : NULL; |
| 1605 | query->sa_query.release = ib_sa_mcmember_rec_release; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1606 | mad->mad_hdr.method = method; |
| 1607 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_MC_MEMBER_REC); |
| 1608 | mad->sa_hdr.comp_mask = comp_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1609 | |
| 1610 | ib_pack(mcmember_rec_table, ARRAY_SIZE(mcmember_rec_table), |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1611 | rec, mad->data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1612 | |
| 1613 | *sa_query = &query->sa_query; |
Roland Dreier | dae4c1d | 2005-06-27 14:36:46 -0700 | [diff] [blame] | 1614 | |
Michael S. Tsirkin | e322fed | 2006-07-14 00:23:56 -0700 | [diff] [blame] | 1615 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1616 | if (ret < 0) |
| 1617 | goto err2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1618 | |
Roland Dreier | dae4c1d | 2005-06-27 14:36:46 -0700 | [diff] [blame] | 1619 | return ret; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1620 | |
| 1621 | err2: |
| 1622 | *sa_query = NULL; |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1623 | ib_sa_client_put(query->sa_query.client); |
Sean Hefty | 2aec5c6 | 2007-06-18 11:03:58 -0700 | [diff] [blame] | 1624 | free_mad(&query->sa_query); |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1625 | |
| 1626 | err1: |
| 1627 | kfree(query); |
| 1628 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1629 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1630 | |
Erez Shitrit | aeab97e | 2012-06-19 11:21:38 +0300 | [diff] [blame] | 1631 | /* Support GuidInfoRecord */ |
| 1632 | static void ib_sa_guidinfo_rec_callback(struct ib_sa_query *sa_query, |
| 1633 | int status, |
| 1634 | struct ib_sa_mad *mad) |
| 1635 | { |
| 1636 | struct ib_sa_guidinfo_query *query = |
| 1637 | container_of(sa_query, struct ib_sa_guidinfo_query, sa_query); |
| 1638 | |
| 1639 | if (mad) { |
| 1640 | struct ib_sa_guidinfo_rec rec; |
| 1641 | |
| 1642 | ib_unpack(guidinfo_rec_table, ARRAY_SIZE(guidinfo_rec_table), |
| 1643 | mad->data, &rec); |
| 1644 | query->callback(status, &rec, query->context); |
| 1645 | } else |
| 1646 | query->callback(status, NULL, query->context); |
| 1647 | } |
| 1648 | |
| 1649 | static void ib_sa_guidinfo_rec_release(struct ib_sa_query *sa_query) |
| 1650 | { |
| 1651 | kfree(container_of(sa_query, struct ib_sa_guidinfo_query, sa_query)); |
| 1652 | } |
| 1653 | |
| 1654 | int ib_sa_guid_info_rec_query(struct ib_sa_client *client, |
| 1655 | struct ib_device *device, u8 port_num, |
| 1656 | struct ib_sa_guidinfo_rec *rec, |
| 1657 | ib_sa_comp_mask comp_mask, u8 method, |
| 1658 | int timeout_ms, gfp_t gfp_mask, |
| 1659 | void (*callback)(int status, |
| 1660 | struct ib_sa_guidinfo_rec *resp, |
| 1661 | void *context), |
| 1662 | void *context, |
| 1663 | struct ib_sa_query **sa_query) |
| 1664 | { |
| 1665 | struct ib_sa_guidinfo_query *query; |
| 1666 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); |
| 1667 | struct ib_sa_port *port; |
| 1668 | struct ib_mad_agent *agent; |
| 1669 | struct ib_sa_mad *mad; |
| 1670 | int ret; |
| 1671 | |
| 1672 | if (!sa_dev) |
| 1673 | return -ENODEV; |
| 1674 | |
| 1675 | if (method != IB_MGMT_METHOD_GET && |
| 1676 | method != IB_MGMT_METHOD_SET && |
| 1677 | method != IB_SA_METHOD_DELETE) { |
| 1678 | return -EINVAL; |
| 1679 | } |
| 1680 | |
| 1681 | port = &sa_dev->port[port_num - sa_dev->start_port]; |
| 1682 | agent = port->agent; |
| 1683 | |
Kaike Wan | 5d26577 | 2015-08-14 08:52:08 -0400 | [diff] [blame] | 1684 | query = kzalloc(sizeof(*query), gfp_mask); |
Erez Shitrit | aeab97e | 2012-06-19 11:21:38 +0300 | [diff] [blame] | 1685 | if (!query) |
| 1686 | return -ENOMEM; |
| 1687 | |
| 1688 | query->sa_query.port = port; |
| 1689 | ret = alloc_mad(&query->sa_query, gfp_mask); |
| 1690 | if (ret) |
| 1691 | goto err1; |
| 1692 | |
| 1693 | ib_sa_client_get(client); |
| 1694 | query->sa_query.client = client; |
| 1695 | query->callback = callback; |
| 1696 | query->context = context; |
| 1697 | |
| 1698 | mad = query->sa_query.mad_buf->mad; |
| 1699 | init_mad(mad, agent); |
| 1700 | |
| 1701 | query->sa_query.callback = callback ? ib_sa_guidinfo_rec_callback : NULL; |
| 1702 | query->sa_query.release = ib_sa_guidinfo_rec_release; |
| 1703 | |
| 1704 | mad->mad_hdr.method = method; |
| 1705 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_GUID_INFO_REC); |
| 1706 | mad->sa_hdr.comp_mask = comp_mask; |
| 1707 | |
| 1708 | ib_pack(guidinfo_rec_table, ARRAY_SIZE(guidinfo_rec_table), rec, |
| 1709 | mad->data); |
| 1710 | |
| 1711 | *sa_query = &query->sa_query; |
| 1712 | |
| 1713 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
| 1714 | if (ret < 0) |
| 1715 | goto err2; |
| 1716 | |
| 1717 | return ret; |
| 1718 | |
| 1719 | err2: |
| 1720 | *sa_query = NULL; |
| 1721 | ib_sa_client_put(query->sa_query.client); |
| 1722 | free_mad(&query->sa_query); |
| 1723 | |
| 1724 | err1: |
| 1725 | kfree(query); |
| 1726 | return ret; |
| 1727 | } |
| 1728 | EXPORT_SYMBOL(ib_sa_guid_info_rec_query); |
| 1729 | |
Erez Shitrit | 628e6f7 | 2016-05-25 22:02:05 +0300 | [diff] [blame] | 1730 | /* Support get SA ClassPortInfo */ |
| 1731 | static void ib_sa_classport_info_rec_callback(struct ib_sa_query *sa_query, |
| 1732 | int status, |
| 1733 | struct ib_sa_mad *mad) |
| 1734 | { |
Alex Vesker | 3d3fd74 | 2016-07-06 16:36:34 +0300 | [diff] [blame] | 1735 | unsigned long flags; |
Erez Shitrit | 628e6f7 | 2016-05-25 22:02:05 +0300 | [diff] [blame] | 1736 | struct ib_sa_classport_info_query *query = |
| 1737 | container_of(sa_query, struct ib_sa_classport_info_query, sa_query); |
| 1738 | |
| 1739 | if (mad) { |
| 1740 | struct ib_class_port_info rec; |
| 1741 | |
| 1742 | ib_unpack(classport_info_rec_table, |
| 1743 | ARRAY_SIZE(classport_info_rec_table), |
| 1744 | mad->data, &rec); |
Alex Vesker | 3d3fd74 | 2016-07-06 16:36:34 +0300 | [diff] [blame] | 1745 | |
| 1746 | spin_lock_irqsave(&sa_query->port->classport_lock, flags); |
| 1747 | if (!status && !sa_query->port->classport_info.valid) { |
| 1748 | memcpy(&sa_query->port->classport_info.data, &rec, |
| 1749 | sizeof(sa_query->port->classport_info.data)); |
| 1750 | |
| 1751 | sa_query->port->classport_info.valid = true; |
| 1752 | } |
| 1753 | spin_unlock_irqrestore(&sa_query->port->classport_lock, flags); |
| 1754 | |
Erez Shitrit | 628e6f7 | 2016-05-25 22:02:05 +0300 | [diff] [blame] | 1755 | query->callback(status, &rec, query->context); |
| 1756 | } else { |
| 1757 | query->callback(status, NULL, query->context); |
| 1758 | } |
| 1759 | } |
| 1760 | |
| 1761 | static void ib_sa_portclass_info_rec_release(struct ib_sa_query *sa_query) |
| 1762 | { |
| 1763 | kfree(container_of(sa_query, struct ib_sa_classport_info_query, |
| 1764 | sa_query)); |
| 1765 | } |
| 1766 | |
| 1767 | int ib_sa_classport_info_rec_query(struct ib_sa_client *client, |
| 1768 | struct ib_device *device, u8 port_num, |
| 1769 | int timeout_ms, gfp_t gfp_mask, |
| 1770 | void (*callback)(int status, |
| 1771 | struct ib_class_port_info *resp, |
| 1772 | void *context), |
| 1773 | void *context, |
| 1774 | struct ib_sa_query **sa_query) |
| 1775 | { |
| 1776 | struct ib_sa_classport_info_query *query; |
| 1777 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); |
| 1778 | struct ib_sa_port *port; |
| 1779 | struct ib_mad_agent *agent; |
| 1780 | struct ib_sa_mad *mad; |
Alex Vesker | 3d3fd74 | 2016-07-06 16:36:34 +0300 | [diff] [blame] | 1781 | struct ib_class_port_info cached_class_port_info; |
Erez Shitrit | 628e6f7 | 2016-05-25 22:02:05 +0300 | [diff] [blame] | 1782 | int ret; |
Alex Vesker | 3d3fd74 | 2016-07-06 16:36:34 +0300 | [diff] [blame] | 1783 | unsigned long flags; |
Erez Shitrit | 628e6f7 | 2016-05-25 22:02:05 +0300 | [diff] [blame] | 1784 | |
| 1785 | if (!sa_dev) |
| 1786 | return -ENODEV; |
| 1787 | |
| 1788 | port = &sa_dev->port[port_num - sa_dev->start_port]; |
| 1789 | agent = port->agent; |
| 1790 | |
Alex Vesker | 3d3fd74 | 2016-07-06 16:36:34 +0300 | [diff] [blame] | 1791 | /* Use cached ClassPortInfo attribute if valid instead of sending mad */ |
| 1792 | spin_lock_irqsave(&port->classport_lock, flags); |
| 1793 | if (port->classport_info.valid && callback) { |
| 1794 | memcpy(&cached_class_port_info, &port->classport_info.data, |
| 1795 | sizeof(cached_class_port_info)); |
| 1796 | spin_unlock_irqrestore(&port->classport_lock, flags); |
| 1797 | callback(0, &cached_class_port_info, context); |
| 1798 | return 0; |
| 1799 | } |
| 1800 | spin_unlock_irqrestore(&port->classport_lock, flags); |
| 1801 | |
Erez Shitrit | 628e6f7 | 2016-05-25 22:02:05 +0300 | [diff] [blame] | 1802 | query = kzalloc(sizeof(*query), gfp_mask); |
| 1803 | if (!query) |
| 1804 | return -ENOMEM; |
| 1805 | |
| 1806 | query->sa_query.port = port; |
| 1807 | ret = alloc_mad(&query->sa_query, gfp_mask); |
| 1808 | if (ret) |
| 1809 | goto err1; |
| 1810 | |
| 1811 | ib_sa_client_get(client); |
| 1812 | query->sa_query.client = client; |
| 1813 | query->callback = callback; |
| 1814 | query->context = context; |
| 1815 | |
| 1816 | mad = query->sa_query.mad_buf->mad; |
| 1817 | init_mad(mad, agent); |
| 1818 | |
| 1819 | query->sa_query.callback = callback ? ib_sa_classport_info_rec_callback : NULL; |
| 1820 | |
| 1821 | query->sa_query.release = ib_sa_portclass_info_rec_release; |
| 1822 | /* support GET only */ |
| 1823 | mad->mad_hdr.method = IB_MGMT_METHOD_GET; |
| 1824 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_CLASS_PORTINFO); |
| 1825 | mad->sa_hdr.comp_mask = 0; |
| 1826 | *sa_query = &query->sa_query; |
| 1827 | |
| 1828 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
| 1829 | if (ret < 0) |
| 1830 | goto err2; |
| 1831 | |
| 1832 | return ret; |
| 1833 | |
| 1834 | err2: |
| 1835 | *sa_query = NULL; |
| 1836 | ib_sa_client_put(query->sa_query.client); |
| 1837 | free_mad(&query->sa_query); |
| 1838 | |
| 1839 | err1: |
| 1840 | kfree(query); |
| 1841 | return ret; |
| 1842 | } |
| 1843 | EXPORT_SYMBOL(ib_sa_classport_info_rec_query); |
| 1844 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1845 | static void send_handler(struct ib_mad_agent *agent, |
| 1846 | struct ib_mad_send_wc *mad_send_wc) |
| 1847 | { |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1848 | struct ib_sa_query *query = mad_send_wc->send_buf->context[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1849 | unsigned long flags; |
| 1850 | |
Roland Dreier | e4f50f0 | 2005-05-25 12:31:29 -0700 | [diff] [blame] | 1851 | if (query->callback) |
| 1852 | switch (mad_send_wc->status) { |
| 1853 | case IB_WC_SUCCESS: |
| 1854 | /* No callback -- already got recv */ |
| 1855 | break; |
| 1856 | case IB_WC_RESP_TIMEOUT_ERR: |
| 1857 | query->callback(query, -ETIMEDOUT, NULL); |
| 1858 | break; |
| 1859 | case IB_WC_WR_FLUSH_ERR: |
| 1860 | query->callback(query, -EINTR, NULL); |
| 1861 | break; |
| 1862 | default: |
| 1863 | query->callback(query, -EIO, NULL); |
| 1864 | break; |
| 1865 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1866 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1867 | spin_lock_irqsave(&idr_lock, flags); |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1868 | idr_remove(&query_idr, query->id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | spin_unlock_irqrestore(&idr_lock, flags); |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1870 | |
Sean Hefty | 2aec5c6 | 2007-06-18 11:03:58 -0700 | [diff] [blame] | 1871 | free_mad(query); |
Michael S. Tsirkin | c1a0b23 | 2006-08-21 16:40:12 -0700 | [diff] [blame] | 1872 | ib_sa_client_put(query->client); |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1873 | query->release(query); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1874 | } |
| 1875 | |
| 1876 | static void recv_handler(struct ib_mad_agent *mad_agent, |
Christoph Hellwig | ca28126 | 2016-01-04 14:15:58 +0100 | [diff] [blame] | 1877 | struct ib_mad_send_buf *send_buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1878 | struct ib_mad_recv_wc *mad_recv_wc) |
| 1879 | { |
| 1880 | struct ib_sa_query *query; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | |
Christoph Hellwig | ca28126 | 2016-01-04 14:15:58 +0100 | [diff] [blame] | 1882 | if (!send_buf) |
| 1883 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1884 | |
Christoph Hellwig | ca28126 | 2016-01-04 14:15:58 +0100 | [diff] [blame] | 1885 | query = send_buf->context[0]; |
Sean Hefty | 34816ad | 2005-10-25 10:51:39 -0700 | [diff] [blame] | 1886 | if (query->callback) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1887 | if (mad_recv_wc->wc->status == IB_WC_SUCCESS) |
| 1888 | query->callback(query, |
| 1889 | mad_recv_wc->recv_buf.mad->mad_hdr.status ? |
| 1890 | -EINVAL : 0, |
| 1891 | (struct ib_sa_mad *) mad_recv_wc->recv_buf.mad); |
| 1892 | else |
| 1893 | query->callback(query, -EIO, NULL); |
| 1894 | } |
| 1895 | |
| 1896 | ib_free_recv_mad(mad_recv_wc); |
| 1897 | } |
| 1898 | |
| 1899 | static void ib_sa_add_one(struct ib_device *device) |
| 1900 | { |
| 1901 | struct ib_sa_device *sa_dev; |
| 1902 | int s, e, i; |
Michael Wang | 08e3681 | 2015-05-05 14:50:22 +0200 | [diff] [blame] | 1903 | int count = 0; |
Tom Tucker | 07ebafb | 2006-08-03 16:02:42 -0500 | [diff] [blame] | 1904 | |
Hal Rosenstock | 4139032 | 2015-06-29 09:57:00 -0400 | [diff] [blame] | 1905 | s = rdma_start_port(device); |
| 1906 | e = rdma_end_port(device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1907 | |
Eli Cohen | fac70d5 | 2010-09-27 17:51:11 -0700 | [diff] [blame] | 1908 | sa_dev = kzalloc(sizeof *sa_dev + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1909 | (e - s + 1) * sizeof (struct ib_sa_port), |
| 1910 | GFP_KERNEL); |
| 1911 | if (!sa_dev) |
| 1912 | return; |
| 1913 | |
| 1914 | sa_dev->start_port = s; |
| 1915 | sa_dev->end_port = e; |
| 1916 | |
| 1917 | for (i = 0; i <= e - s; ++i) { |
Eli Cohen | fac70d5 | 2010-09-27 17:51:11 -0700 | [diff] [blame] | 1918 | spin_lock_init(&sa_dev->port[i].ah_lock); |
Michael Wang | fe53ba2 | 2015-05-05 14:50:36 +0200 | [diff] [blame] | 1919 | if (!rdma_cap_ib_sa(device, i + 1)) |
Eli Cohen | fac70d5 | 2010-09-27 17:51:11 -0700 | [diff] [blame] | 1920 | continue; |
| 1921 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1922 | sa_dev->port[i].sm_ah = NULL; |
| 1923 | sa_dev->port[i].port_num = i + s; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1924 | |
Alex Vesker | 3d3fd74 | 2016-07-06 16:36:34 +0300 | [diff] [blame] | 1925 | spin_lock_init(&sa_dev->port[i].classport_lock); |
| 1926 | sa_dev->port[i].classport_info.valid = false; |
| 1927 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1928 | sa_dev->port[i].agent = |
| 1929 | ib_register_mad_agent(device, i + s, IB_QPT_GSI, |
| 1930 | NULL, 0, send_handler, |
Ira Weiny | 0f29b46 | 2014-08-08 19:00:55 -0400 | [diff] [blame] | 1931 | recv_handler, sa_dev, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1932 | if (IS_ERR(sa_dev->port[i].agent)) |
| 1933 | goto err; |
| 1934 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 1935 | INIT_WORK(&sa_dev->port[i].update_task, update_sm_ah); |
Michael Wang | 08e3681 | 2015-05-05 14:50:22 +0200 | [diff] [blame] | 1936 | |
| 1937 | count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1938 | } |
| 1939 | |
Michael Wang | 08e3681 | 2015-05-05 14:50:22 +0200 | [diff] [blame] | 1940 | if (!count) |
| 1941 | goto free; |
| 1942 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1943 | ib_set_client_data(device, &sa_client, sa_dev); |
| 1944 | |
| 1945 | /* |
| 1946 | * We register our event handler after everything is set up, |
| 1947 | * and then update our cached info after the event handler is |
| 1948 | * registered to avoid any problems if a port changes state |
| 1949 | * during our initialization. |
| 1950 | */ |
| 1951 | |
| 1952 | INIT_IB_EVENT_HANDLER(&sa_dev->event_handler, device, ib_sa_event); |
| 1953 | if (ib_register_event_handler(&sa_dev->event_handler)) |
| 1954 | goto err; |
| 1955 | |
Michael Wang | 08e3681 | 2015-05-05 14:50:22 +0200 | [diff] [blame] | 1956 | for (i = 0; i <= e - s; ++i) { |
Michael Wang | fe53ba2 | 2015-05-05 14:50:36 +0200 | [diff] [blame] | 1957 | if (rdma_cap_ib_sa(device, i + 1)) |
Eli Cohen | fac70d5 | 2010-09-27 17:51:11 -0700 | [diff] [blame] | 1958 | update_sm_ah(&sa_dev->port[i].update_task); |
Michael Wang | 08e3681 | 2015-05-05 14:50:22 +0200 | [diff] [blame] | 1959 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1960 | |
| 1961 | return; |
| 1962 | |
| 1963 | err: |
Michael Wang | 08e3681 | 2015-05-05 14:50:22 +0200 | [diff] [blame] | 1964 | while (--i >= 0) { |
Michael Wang | fe53ba2 | 2015-05-05 14:50:36 +0200 | [diff] [blame] | 1965 | if (rdma_cap_ib_sa(device, i + 1)) |
Eli Cohen | fac70d5 | 2010-09-27 17:51:11 -0700 | [diff] [blame] | 1966 | ib_unregister_mad_agent(sa_dev->port[i].agent); |
Michael Wang | 08e3681 | 2015-05-05 14:50:22 +0200 | [diff] [blame] | 1967 | } |
| 1968 | free: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1969 | kfree(sa_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1970 | return; |
| 1971 | } |
| 1972 | |
Haggai Eran | 7c1eb45 | 2015-07-30 17:50:14 +0300 | [diff] [blame] | 1973 | static void ib_sa_remove_one(struct ib_device *device, void *client_data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1974 | { |
Haggai Eran | 7c1eb45 | 2015-07-30 17:50:14 +0300 | [diff] [blame] | 1975 | struct ib_sa_device *sa_dev = client_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1976 | int i; |
| 1977 | |
| 1978 | if (!sa_dev) |
| 1979 | return; |
| 1980 | |
| 1981 | ib_unregister_event_handler(&sa_dev->event_handler); |
| 1982 | |
Tejun Heo | 96e61fa | 2011-01-24 11:06:54 +0000 | [diff] [blame] | 1983 | flush_workqueue(ib_wq); |
Michael S. Tsirkin | 0f47ae0 | 2006-01-17 09:53:51 -0800 | [diff] [blame] | 1984 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1985 | for (i = 0; i <= sa_dev->end_port - sa_dev->start_port; ++i) { |
Michael Wang | fe53ba2 | 2015-05-05 14:50:36 +0200 | [diff] [blame] | 1986 | if (rdma_cap_ib_sa(device, i + 1)) { |
Eli Cohen | fac70d5 | 2010-09-27 17:51:11 -0700 | [diff] [blame] | 1987 | ib_unregister_mad_agent(sa_dev->port[i].agent); |
| 1988 | if (sa_dev->port[i].sm_ah) |
| 1989 | kref_put(&sa_dev->port[i].sm_ah->ref, free_sm_ah); |
| 1990 | } |
| 1991 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1992 | } |
| 1993 | |
| 1994 | kfree(sa_dev); |
| 1995 | } |
| 1996 | |
Mark Bloch | c2e49c9 | 2016-05-19 17:12:33 +0300 | [diff] [blame] | 1997 | int ib_sa_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1998 | { |
| 1999 | int ret; |
| 2000 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2001 | get_random_bytes(&tid, sizeof tid); |
| 2002 | |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 2003 | atomic_set(&ib_nl_sa_request_seq, 0); |
| 2004 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2005 | ret = ib_register_client(&sa_client); |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 2006 | if (ret) { |
Parav Pandit | aba25a3e | 2016-03-02 00:50:29 +0530 | [diff] [blame] | 2007 | pr_err("Couldn't register ib_sa client\n"); |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 2008 | goto err1; |
| 2009 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2010 | |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 2011 | ret = mcast_init(); |
| 2012 | if (ret) { |
Parav Pandit | aba25a3e | 2016-03-02 00:50:29 +0530 | [diff] [blame] | 2013 | pr_err("Couldn't initialize multicast handling\n"); |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 2014 | goto err2; |
| 2015 | } |
| 2016 | |
Bhaktipriya Shridhar | 4534d85 | 2016-08-15 23:27:46 +0530 | [diff] [blame] | 2017 | ib_nl_wq = alloc_ordered_workqueue("ib_nl_sa_wq", WQ_MEM_RECLAIM); |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 2018 | if (!ib_nl_wq) { |
| 2019 | ret = -ENOMEM; |
| 2020 | goto err3; |
| 2021 | } |
| 2022 | |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 2023 | INIT_DELAYED_WORK(&ib_nl_timed_work, ib_nl_request_timeout); |
| 2024 | |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 2025 | return 0; |
Mark Bloch | 735c631 | 2016-05-19 17:12:35 +0300 | [diff] [blame] | 2026 | |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 2027 | err3: |
| 2028 | mcast_cleanup(); |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 2029 | err2: |
| 2030 | ib_unregister_client(&sa_client); |
| 2031 | err1: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2032 | return ret; |
| 2033 | } |
| 2034 | |
Mark Bloch | c2e49c9 | 2016-05-19 17:12:33 +0300 | [diff] [blame] | 2035 | void ib_sa_cleanup(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2036 | { |
Kaike Wan | 2ca546b | 2015-08-14 08:52:09 -0400 | [diff] [blame] | 2037 | cancel_delayed_work(&ib_nl_timed_work); |
| 2038 | flush_workqueue(ib_nl_wq); |
| 2039 | destroy_workqueue(ib_nl_wq); |
Sean Hefty | faec2f7 | 2007-02-15 17:00:17 -0800 | [diff] [blame] | 2040 | mcast_cleanup(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2041 | ib_unregister_client(&sa_client); |
Roland Dreier | 5d7edb3 | 2005-10-24 10:53:25 -0700 | [diff] [blame] | 2042 | idr_destroy(&query_idr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2043 | } |