Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2004 Topspin Communications. All rights reserved. |
Roland Dreier | 2a1d9b7 | 2005-08-10 23:03:10 -0700 | [diff] [blame] | 3 | * Copyright (c) 2005 Voltaire, Inc. All rights reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
| 5 | * This software is available to you under a choice of one of two |
| 6 | * licenses. You may choose to be licensed under the terms of the GNU |
| 7 | * General Public License (GPL) Version 2, available from the file |
| 8 | * COPYING in the main directory of this source tree, or the |
| 9 | * OpenIB.org BSD license below: |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or |
| 12 | * without modification, are permitted provided that the following |
| 13 | * conditions are met: |
| 14 | * |
| 15 | * - Redistributions of source code must retain the above |
| 16 | * copyright notice, this list of conditions and the following |
| 17 | * disclaimer. |
| 18 | * |
| 19 | * - Redistributions in binary form must reproduce the above |
| 20 | * copyright notice, this list of conditions and the following |
| 21 | * disclaimer in the documentation and/or other materials |
| 22 | * provided with the distribution. |
| 23 | * |
| 24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 25 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 26 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 27 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 28 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 29 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 30 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 31 | * SOFTWARE. |
| 32 | * |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 33 | * $Id: sa_query.c 2811 2005-07-06 18:11:43Z halr $ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | */ |
| 35 | |
| 36 | #include <linux/module.h> |
| 37 | #include <linux/init.h> |
| 38 | #include <linux/err.h> |
| 39 | #include <linux/random.h> |
| 40 | #include <linux/spinlock.h> |
| 41 | #include <linux/slab.h> |
| 42 | #include <linux/pci.h> |
| 43 | #include <linux/dma-mapping.h> |
| 44 | #include <linux/kref.h> |
| 45 | #include <linux/idr.h> |
| 46 | |
Roland Dreier | a4d61e8 | 2005-08-25 13:40:04 -0700 | [diff] [blame^] | 47 | #include <rdma/ib_pack.h> |
| 48 | #include <rdma/ib_sa.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
| 50 | MODULE_AUTHOR("Roland Dreier"); |
| 51 | MODULE_DESCRIPTION("InfiniBand subnet administration query support"); |
| 52 | MODULE_LICENSE("Dual BSD/GPL"); |
| 53 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | struct ib_sa_sm_ah { |
| 55 | struct ib_ah *ah; |
| 56 | struct kref ref; |
| 57 | }; |
| 58 | |
| 59 | struct ib_sa_port { |
| 60 | struct ib_mad_agent *agent; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | struct ib_sa_sm_ah *sm_ah; |
| 62 | struct work_struct update_task; |
| 63 | spinlock_t ah_lock; |
| 64 | u8 port_num; |
| 65 | }; |
| 66 | |
| 67 | struct ib_sa_device { |
| 68 | int start_port, end_port; |
| 69 | struct ib_event_handler event_handler; |
| 70 | struct ib_sa_port port[0]; |
| 71 | }; |
| 72 | |
| 73 | struct ib_sa_query { |
| 74 | void (*callback)(struct ib_sa_query *, int, struct ib_sa_mad *); |
| 75 | void (*release)(struct ib_sa_query *); |
| 76 | struct ib_sa_port *port; |
| 77 | struct ib_sa_mad *mad; |
| 78 | struct ib_sa_sm_ah *sm_ah; |
| 79 | DECLARE_PCI_UNMAP_ADDR(mapping) |
| 80 | int id; |
| 81 | }; |
| 82 | |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 83 | struct ib_sa_service_query { |
| 84 | void (*callback)(int, struct ib_sa_service_rec *, void *); |
| 85 | void *context; |
| 86 | struct ib_sa_query sa_query; |
| 87 | }; |
| 88 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | struct ib_sa_path_query { |
| 90 | void (*callback)(int, struct ib_sa_path_rec *, void *); |
| 91 | void *context; |
| 92 | struct ib_sa_query sa_query; |
| 93 | }; |
| 94 | |
| 95 | struct ib_sa_mcmember_query { |
| 96 | void (*callback)(int, struct ib_sa_mcmember_rec *, void *); |
| 97 | void *context; |
| 98 | struct ib_sa_query sa_query; |
| 99 | }; |
| 100 | |
| 101 | static void ib_sa_add_one(struct ib_device *device); |
| 102 | static void ib_sa_remove_one(struct ib_device *device); |
| 103 | |
| 104 | static struct ib_client sa_client = { |
| 105 | .name = "sa", |
| 106 | .add = ib_sa_add_one, |
| 107 | .remove = ib_sa_remove_one |
| 108 | }; |
| 109 | |
| 110 | static spinlock_t idr_lock; |
| 111 | static DEFINE_IDR(query_idr); |
| 112 | |
| 113 | static spinlock_t tid_lock; |
| 114 | static u32 tid; |
| 115 | |
| 116 | enum { |
| 117 | IB_SA_ATTR_CLASS_PORTINFO = 0x01, |
| 118 | IB_SA_ATTR_NOTICE = 0x02, |
| 119 | IB_SA_ATTR_INFORM_INFO = 0x03, |
| 120 | IB_SA_ATTR_NODE_REC = 0x11, |
| 121 | IB_SA_ATTR_PORT_INFO_REC = 0x12, |
| 122 | IB_SA_ATTR_SL2VL_REC = 0x13, |
| 123 | IB_SA_ATTR_SWITCH_REC = 0x14, |
| 124 | IB_SA_ATTR_LINEAR_FDB_REC = 0x15, |
| 125 | IB_SA_ATTR_RANDOM_FDB_REC = 0x16, |
| 126 | IB_SA_ATTR_MCAST_FDB_REC = 0x17, |
| 127 | IB_SA_ATTR_SM_INFO_REC = 0x18, |
| 128 | IB_SA_ATTR_LINK_REC = 0x20, |
| 129 | IB_SA_ATTR_GUID_INFO_REC = 0x30, |
| 130 | IB_SA_ATTR_SERVICE_REC = 0x31, |
| 131 | IB_SA_ATTR_PARTITION_REC = 0x33, |
| 132 | IB_SA_ATTR_RANGE_REC = 0x34, |
| 133 | IB_SA_ATTR_PATH_REC = 0x35, |
| 134 | IB_SA_ATTR_VL_ARB_REC = 0x36, |
| 135 | IB_SA_ATTR_MC_GROUP_REC = 0x37, |
| 136 | IB_SA_ATTR_MC_MEMBER_REC = 0x38, |
| 137 | IB_SA_ATTR_TRACE_REC = 0x39, |
| 138 | IB_SA_ATTR_MULTI_PATH_REC = 0x3a, |
| 139 | IB_SA_ATTR_SERVICE_ASSOC_REC = 0x3b |
| 140 | }; |
| 141 | |
| 142 | #define PATH_REC_FIELD(field) \ |
| 143 | .struct_offset_bytes = offsetof(struct ib_sa_path_rec, field), \ |
| 144 | .struct_size_bytes = sizeof ((struct ib_sa_path_rec *) 0)->field, \ |
| 145 | .field_name = "sa_path_rec:" #field |
| 146 | |
| 147 | static const struct ib_field path_rec_table[] = { |
| 148 | { RESERVED, |
| 149 | .offset_words = 0, |
| 150 | .offset_bits = 0, |
| 151 | .size_bits = 32 }, |
| 152 | { RESERVED, |
| 153 | .offset_words = 1, |
| 154 | .offset_bits = 0, |
| 155 | .size_bits = 32 }, |
| 156 | { PATH_REC_FIELD(dgid), |
| 157 | .offset_words = 2, |
| 158 | .offset_bits = 0, |
| 159 | .size_bits = 128 }, |
| 160 | { PATH_REC_FIELD(sgid), |
| 161 | .offset_words = 6, |
| 162 | .offset_bits = 0, |
| 163 | .size_bits = 128 }, |
| 164 | { PATH_REC_FIELD(dlid), |
| 165 | .offset_words = 10, |
| 166 | .offset_bits = 0, |
| 167 | .size_bits = 16 }, |
| 168 | { PATH_REC_FIELD(slid), |
| 169 | .offset_words = 10, |
| 170 | .offset_bits = 16, |
| 171 | .size_bits = 16 }, |
| 172 | { PATH_REC_FIELD(raw_traffic), |
| 173 | .offset_words = 11, |
| 174 | .offset_bits = 0, |
| 175 | .size_bits = 1 }, |
| 176 | { RESERVED, |
| 177 | .offset_words = 11, |
| 178 | .offset_bits = 1, |
| 179 | .size_bits = 3 }, |
| 180 | { PATH_REC_FIELD(flow_label), |
| 181 | .offset_words = 11, |
| 182 | .offset_bits = 4, |
| 183 | .size_bits = 20 }, |
| 184 | { PATH_REC_FIELD(hop_limit), |
| 185 | .offset_words = 11, |
| 186 | .offset_bits = 24, |
| 187 | .size_bits = 8 }, |
| 188 | { PATH_REC_FIELD(traffic_class), |
| 189 | .offset_words = 12, |
| 190 | .offset_bits = 0, |
| 191 | .size_bits = 8 }, |
| 192 | { PATH_REC_FIELD(reversible), |
| 193 | .offset_words = 12, |
| 194 | .offset_bits = 8, |
| 195 | .size_bits = 1 }, |
| 196 | { PATH_REC_FIELD(numb_path), |
| 197 | .offset_words = 12, |
| 198 | .offset_bits = 9, |
| 199 | .size_bits = 7 }, |
| 200 | { PATH_REC_FIELD(pkey), |
| 201 | .offset_words = 12, |
| 202 | .offset_bits = 16, |
| 203 | .size_bits = 16 }, |
| 204 | { RESERVED, |
| 205 | .offset_words = 13, |
| 206 | .offset_bits = 0, |
| 207 | .size_bits = 12 }, |
| 208 | { PATH_REC_FIELD(sl), |
| 209 | .offset_words = 13, |
| 210 | .offset_bits = 12, |
| 211 | .size_bits = 4 }, |
| 212 | { PATH_REC_FIELD(mtu_selector), |
| 213 | .offset_words = 13, |
| 214 | .offset_bits = 16, |
| 215 | .size_bits = 2 }, |
| 216 | { PATH_REC_FIELD(mtu), |
| 217 | .offset_words = 13, |
| 218 | .offset_bits = 18, |
| 219 | .size_bits = 6 }, |
| 220 | { PATH_REC_FIELD(rate_selector), |
| 221 | .offset_words = 13, |
| 222 | .offset_bits = 24, |
| 223 | .size_bits = 2 }, |
| 224 | { PATH_REC_FIELD(rate), |
| 225 | .offset_words = 13, |
| 226 | .offset_bits = 26, |
| 227 | .size_bits = 6 }, |
| 228 | { PATH_REC_FIELD(packet_life_time_selector), |
| 229 | .offset_words = 14, |
| 230 | .offset_bits = 0, |
| 231 | .size_bits = 2 }, |
| 232 | { PATH_REC_FIELD(packet_life_time), |
| 233 | .offset_words = 14, |
| 234 | .offset_bits = 2, |
| 235 | .size_bits = 6 }, |
| 236 | { PATH_REC_FIELD(preference), |
| 237 | .offset_words = 14, |
| 238 | .offset_bits = 8, |
| 239 | .size_bits = 8 }, |
| 240 | { RESERVED, |
| 241 | .offset_words = 14, |
| 242 | .offset_bits = 16, |
| 243 | .size_bits = 48 }, |
| 244 | }; |
| 245 | |
| 246 | #define MCMEMBER_REC_FIELD(field) \ |
| 247 | .struct_offset_bytes = offsetof(struct ib_sa_mcmember_rec, field), \ |
| 248 | .struct_size_bytes = sizeof ((struct ib_sa_mcmember_rec *) 0)->field, \ |
| 249 | .field_name = "sa_mcmember_rec:" #field |
| 250 | |
| 251 | static const struct ib_field mcmember_rec_table[] = { |
| 252 | { MCMEMBER_REC_FIELD(mgid), |
| 253 | .offset_words = 0, |
| 254 | .offset_bits = 0, |
| 255 | .size_bits = 128 }, |
| 256 | { MCMEMBER_REC_FIELD(port_gid), |
| 257 | .offset_words = 4, |
| 258 | .offset_bits = 0, |
| 259 | .size_bits = 128 }, |
| 260 | { MCMEMBER_REC_FIELD(qkey), |
| 261 | .offset_words = 8, |
| 262 | .offset_bits = 0, |
| 263 | .size_bits = 32 }, |
| 264 | { MCMEMBER_REC_FIELD(mlid), |
| 265 | .offset_words = 9, |
| 266 | .offset_bits = 0, |
| 267 | .size_bits = 16 }, |
| 268 | { MCMEMBER_REC_FIELD(mtu_selector), |
| 269 | .offset_words = 9, |
| 270 | .offset_bits = 16, |
| 271 | .size_bits = 2 }, |
| 272 | { MCMEMBER_REC_FIELD(mtu), |
| 273 | .offset_words = 9, |
| 274 | .offset_bits = 18, |
| 275 | .size_bits = 6 }, |
| 276 | { MCMEMBER_REC_FIELD(traffic_class), |
| 277 | .offset_words = 9, |
| 278 | .offset_bits = 24, |
| 279 | .size_bits = 8 }, |
| 280 | { MCMEMBER_REC_FIELD(pkey), |
| 281 | .offset_words = 10, |
| 282 | .offset_bits = 0, |
| 283 | .size_bits = 16 }, |
| 284 | { MCMEMBER_REC_FIELD(rate_selector), |
| 285 | .offset_words = 10, |
| 286 | .offset_bits = 16, |
| 287 | .size_bits = 2 }, |
| 288 | { MCMEMBER_REC_FIELD(rate), |
| 289 | .offset_words = 10, |
| 290 | .offset_bits = 18, |
| 291 | .size_bits = 6 }, |
| 292 | { MCMEMBER_REC_FIELD(packet_life_time_selector), |
| 293 | .offset_words = 10, |
| 294 | .offset_bits = 24, |
| 295 | .size_bits = 2 }, |
| 296 | { MCMEMBER_REC_FIELD(packet_life_time), |
| 297 | .offset_words = 10, |
| 298 | .offset_bits = 26, |
| 299 | .size_bits = 6 }, |
| 300 | { MCMEMBER_REC_FIELD(sl), |
| 301 | .offset_words = 11, |
| 302 | .offset_bits = 0, |
| 303 | .size_bits = 4 }, |
| 304 | { MCMEMBER_REC_FIELD(flow_label), |
| 305 | .offset_words = 11, |
| 306 | .offset_bits = 4, |
| 307 | .size_bits = 20 }, |
| 308 | { MCMEMBER_REC_FIELD(hop_limit), |
| 309 | .offset_words = 11, |
| 310 | .offset_bits = 24, |
| 311 | .size_bits = 8 }, |
| 312 | { MCMEMBER_REC_FIELD(scope), |
| 313 | .offset_words = 12, |
| 314 | .offset_bits = 0, |
| 315 | .size_bits = 4 }, |
| 316 | { MCMEMBER_REC_FIELD(join_state), |
| 317 | .offset_words = 12, |
| 318 | .offset_bits = 4, |
| 319 | .size_bits = 4 }, |
| 320 | { MCMEMBER_REC_FIELD(proxy_join), |
| 321 | .offset_words = 12, |
| 322 | .offset_bits = 8, |
| 323 | .size_bits = 1 }, |
| 324 | { RESERVED, |
| 325 | .offset_words = 12, |
| 326 | .offset_bits = 9, |
| 327 | .size_bits = 23 }, |
| 328 | }; |
| 329 | |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 330 | #define SERVICE_REC_FIELD(field) \ |
| 331 | .struct_offset_bytes = offsetof(struct ib_sa_service_rec, field), \ |
| 332 | .struct_size_bytes = sizeof ((struct ib_sa_service_rec *) 0)->field, \ |
| 333 | .field_name = "sa_service_rec:" #field |
| 334 | |
| 335 | static const struct ib_field service_rec_table[] = { |
| 336 | { SERVICE_REC_FIELD(id), |
| 337 | .offset_words = 0, |
| 338 | .offset_bits = 0, |
| 339 | .size_bits = 64 }, |
| 340 | { SERVICE_REC_FIELD(gid), |
| 341 | .offset_words = 2, |
| 342 | .offset_bits = 0, |
| 343 | .size_bits = 128 }, |
| 344 | { SERVICE_REC_FIELD(pkey), |
| 345 | .offset_words = 6, |
| 346 | .offset_bits = 0, |
| 347 | .size_bits = 16 }, |
| 348 | { SERVICE_REC_FIELD(lease), |
| 349 | .offset_words = 7, |
| 350 | .offset_bits = 0, |
| 351 | .size_bits = 32 }, |
| 352 | { SERVICE_REC_FIELD(key), |
| 353 | .offset_words = 8, |
| 354 | .offset_bits = 0, |
| 355 | .size_bits = 128 }, |
| 356 | { SERVICE_REC_FIELD(name), |
| 357 | .offset_words = 12, |
| 358 | .offset_bits = 0, |
| 359 | .size_bits = 64*8 }, |
| 360 | { SERVICE_REC_FIELD(data8), |
| 361 | .offset_words = 28, |
| 362 | .offset_bits = 0, |
| 363 | .size_bits = 16*8 }, |
| 364 | { SERVICE_REC_FIELD(data16), |
| 365 | .offset_words = 32, |
| 366 | .offset_bits = 0, |
| 367 | .size_bits = 8*16 }, |
| 368 | { SERVICE_REC_FIELD(data32), |
| 369 | .offset_words = 36, |
| 370 | .offset_bits = 0, |
| 371 | .size_bits = 4*32 }, |
| 372 | { SERVICE_REC_FIELD(data64), |
| 373 | .offset_words = 40, |
| 374 | .offset_bits = 0, |
| 375 | .size_bits = 2*64 }, |
| 376 | }; |
| 377 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | static void free_sm_ah(struct kref *kref) |
| 379 | { |
| 380 | struct ib_sa_sm_ah *sm_ah = container_of(kref, struct ib_sa_sm_ah, ref); |
| 381 | |
| 382 | ib_destroy_ah(sm_ah->ah); |
| 383 | kfree(sm_ah); |
| 384 | } |
| 385 | |
| 386 | static void update_sm_ah(void *port_ptr) |
| 387 | { |
| 388 | struct ib_sa_port *port = port_ptr; |
| 389 | struct ib_sa_sm_ah *new_ah, *old_ah; |
| 390 | struct ib_port_attr port_attr; |
| 391 | struct ib_ah_attr ah_attr; |
| 392 | |
| 393 | if (ib_query_port(port->agent->device, port->port_num, &port_attr)) { |
| 394 | printk(KERN_WARNING "Couldn't query port\n"); |
| 395 | return; |
| 396 | } |
| 397 | |
| 398 | new_ah = kmalloc(sizeof *new_ah, GFP_KERNEL); |
| 399 | if (!new_ah) { |
| 400 | printk(KERN_WARNING "Couldn't allocate new SM AH\n"); |
| 401 | return; |
| 402 | } |
| 403 | |
| 404 | kref_init(&new_ah->ref); |
| 405 | |
| 406 | memset(&ah_attr, 0, sizeof ah_attr); |
| 407 | ah_attr.dlid = port_attr.sm_lid; |
| 408 | ah_attr.sl = port_attr.sm_sl; |
| 409 | ah_attr.port_num = port->port_num; |
| 410 | |
| 411 | new_ah->ah = ib_create_ah(port->agent->qp->pd, &ah_attr); |
| 412 | if (IS_ERR(new_ah->ah)) { |
| 413 | printk(KERN_WARNING "Couldn't create new SM AH\n"); |
| 414 | kfree(new_ah); |
| 415 | return; |
| 416 | } |
| 417 | |
| 418 | spin_lock_irq(&port->ah_lock); |
| 419 | old_ah = port->sm_ah; |
| 420 | port->sm_ah = new_ah; |
| 421 | spin_unlock_irq(&port->ah_lock); |
| 422 | |
| 423 | if (old_ah) |
| 424 | kref_put(&old_ah->ref, free_sm_ah); |
| 425 | } |
| 426 | |
| 427 | static void ib_sa_event(struct ib_event_handler *handler, struct ib_event *event) |
| 428 | { |
| 429 | if (event->event == IB_EVENT_PORT_ERR || |
| 430 | event->event == IB_EVENT_PORT_ACTIVE || |
| 431 | event->event == IB_EVENT_LID_CHANGE || |
| 432 | event->event == IB_EVENT_PKEY_CHANGE || |
| 433 | event->event == IB_EVENT_SM_CHANGE) { |
| 434 | struct ib_sa_device *sa_dev = |
| 435 | ib_get_client_data(event->device, &sa_client); |
| 436 | |
| 437 | schedule_work(&sa_dev->port[event->element.port_num - |
| 438 | sa_dev->start_port].update_task); |
| 439 | } |
| 440 | } |
| 441 | |
| 442 | /** |
| 443 | * ib_sa_cancel_query - try to cancel an SA query |
| 444 | * @id:ID of query to cancel |
| 445 | * @query:query pointer to cancel |
| 446 | * |
| 447 | * Try to cancel an SA query. If the id and query don't match up or |
| 448 | * the query has already completed, nothing is done. Otherwise the |
| 449 | * query is canceled and will complete with a status of -EINTR. |
| 450 | */ |
| 451 | void ib_sa_cancel_query(int id, struct ib_sa_query *query) |
| 452 | { |
| 453 | unsigned long flags; |
| 454 | struct ib_mad_agent *agent; |
| 455 | |
| 456 | spin_lock_irqsave(&idr_lock, flags); |
| 457 | if (idr_find(&query_idr, id) != query) { |
| 458 | spin_unlock_irqrestore(&idr_lock, flags); |
| 459 | return; |
| 460 | } |
| 461 | agent = query->port->agent; |
| 462 | spin_unlock_irqrestore(&idr_lock, flags); |
| 463 | |
| 464 | ib_cancel_mad(agent, id); |
| 465 | } |
| 466 | EXPORT_SYMBOL(ib_sa_cancel_query); |
| 467 | |
| 468 | static void init_mad(struct ib_sa_mad *mad, struct ib_mad_agent *agent) |
| 469 | { |
| 470 | unsigned long flags; |
| 471 | |
| 472 | memset(mad, 0, sizeof *mad); |
| 473 | |
| 474 | mad->mad_hdr.base_version = IB_MGMT_BASE_VERSION; |
| 475 | mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_SUBN_ADM; |
| 476 | mad->mad_hdr.class_version = IB_SA_CLASS_VERSION; |
| 477 | |
| 478 | spin_lock_irqsave(&tid_lock, flags); |
| 479 | mad->mad_hdr.tid = |
| 480 | cpu_to_be64(((u64) agent->hi_tid) << 32 | tid++); |
| 481 | spin_unlock_irqrestore(&tid_lock, flags); |
| 482 | } |
| 483 | |
| 484 | static int send_mad(struct ib_sa_query *query, int timeout_ms) |
| 485 | { |
| 486 | struct ib_sa_port *port = query->port; |
| 487 | unsigned long flags; |
| 488 | int ret; |
| 489 | struct ib_sge gather_list; |
| 490 | struct ib_send_wr *bad_wr, wr = { |
| 491 | .opcode = IB_WR_SEND, |
| 492 | .sg_list = &gather_list, |
| 493 | .num_sge = 1, |
| 494 | .send_flags = IB_SEND_SIGNALED, |
| 495 | .wr = { |
| 496 | .ud = { |
| 497 | .mad_hdr = &query->mad->mad_hdr, |
| 498 | .remote_qpn = 1, |
| 499 | .remote_qkey = IB_QP1_QKEY, |
Hal Rosenstock | f75b7a5 | 2005-07-27 11:45:29 -0700 | [diff] [blame] | 500 | .timeout_ms = timeout_ms, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | } |
| 502 | } |
| 503 | }; |
| 504 | |
| 505 | retry: |
| 506 | if (!idr_pre_get(&query_idr, GFP_ATOMIC)) |
| 507 | return -ENOMEM; |
| 508 | spin_lock_irqsave(&idr_lock, flags); |
| 509 | ret = idr_get_new(&query_idr, query, &query->id); |
| 510 | spin_unlock_irqrestore(&idr_lock, flags); |
| 511 | if (ret == -EAGAIN) |
| 512 | goto retry; |
| 513 | if (ret) |
| 514 | return ret; |
| 515 | |
| 516 | wr.wr_id = query->id; |
| 517 | |
| 518 | spin_lock_irqsave(&port->ah_lock, flags); |
| 519 | kref_get(&port->sm_ah->ref); |
| 520 | query->sm_ah = port->sm_ah; |
| 521 | wr.wr.ud.ah = port->sm_ah->ah; |
| 522 | spin_unlock_irqrestore(&port->ah_lock, flags); |
| 523 | |
| 524 | gather_list.addr = dma_map_single(port->agent->device->dma_device, |
| 525 | query->mad, |
| 526 | sizeof (struct ib_sa_mad), |
| 527 | DMA_TO_DEVICE); |
| 528 | gather_list.length = sizeof (struct ib_sa_mad); |
Hal Rosenstock | b82cab6 | 2005-07-27 11:45:22 -0700 | [diff] [blame] | 529 | gather_list.lkey = port->agent->mr->lkey; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | pci_unmap_addr_set(query, mapping, gather_list.addr); |
| 531 | |
| 532 | ret = ib_post_send_mad(port->agent, &wr, &bad_wr); |
| 533 | if (ret) { |
| 534 | dma_unmap_single(port->agent->device->dma_device, |
| 535 | pci_unmap_addr(query, mapping), |
| 536 | sizeof (struct ib_sa_mad), |
| 537 | DMA_TO_DEVICE); |
| 538 | kref_put(&query->sm_ah->ref, free_sm_ah); |
| 539 | spin_lock_irqsave(&idr_lock, flags); |
| 540 | idr_remove(&query_idr, query->id); |
| 541 | spin_unlock_irqrestore(&idr_lock, flags); |
| 542 | } |
| 543 | |
Roland Dreier | dae4c1d | 2005-06-27 14:36:46 -0700 | [diff] [blame] | 544 | /* |
| 545 | * It's not safe to dereference query any more, because the |
| 546 | * send may already have completed and freed the query in |
| 547 | * another context. So use wr.wr_id, which has a copy of the |
| 548 | * query's id. |
| 549 | */ |
| 550 | return ret ? ret : wr.wr_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | } |
| 552 | |
| 553 | static void ib_sa_path_rec_callback(struct ib_sa_query *sa_query, |
| 554 | int status, |
| 555 | struct ib_sa_mad *mad) |
| 556 | { |
| 557 | struct ib_sa_path_query *query = |
| 558 | container_of(sa_query, struct ib_sa_path_query, sa_query); |
| 559 | |
| 560 | if (mad) { |
| 561 | struct ib_sa_path_rec rec; |
| 562 | |
| 563 | ib_unpack(path_rec_table, ARRAY_SIZE(path_rec_table), |
| 564 | mad->data, &rec); |
| 565 | query->callback(status, &rec, query->context); |
| 566 | } else |
| 567 | query->callback(status, NULL, query->context); |
| 568 | } |
| 569 | |
| 570 | static void ib_sa_path_rec_release(struct ib_sa_query *sa_query) |
| 571 | { |
| 572 | kfree(sa_query->mad); |
| 573 | kfree(container_of(sa_query, struct ib_sa_path_query, sa_query)); |
| 574 | } |
| 575 | |
| 576 | /** |
| 577 | * ib_sa_path_rec_get - Start a Path get query |
| 578 | * @device:device to send query on |
| 579 | * @port_num: port number to send query on |
| 580 | * @rec:Path Record to send in query |
| 581 | * @comp_mask:component mask to send in query |
| 582 | * @timeout_ms:time to wait for response |
| 583 | * @gfp_mask:GFP mask to use for internal allocations |
| 584 | * @callback:function called when query completes, times out or is |
| 585 | * canceled |
| 586 | * @context:opaque user context passed to callback |
| 587 | * @sa_query:query context, used to cancel query |
| 588 | * |
| 589 | * Send a Path Record Get query to the SA to look up a path. The |
| 590 | * callback function will be called when the query completes (or |
| 591 | * fails); status is 0 for a successful response, -EINTR if the query |
| 592 | * is canceled, -ETIMEDOUT is the query timed out, or -EIO if an error |
| 593 | * occurred sending the query. The resp parameter of the callback is |
| 594 | * only valid if status is 0. |
| 595 | * |
| 596 | * If the return value of ib_sa_path_rec_get() is negative, it is an |
| 597 | * error code. Otherwise it is a query ID that can be used to cancel |
| 598 | * the query. |
| 599 | */ |
| 600 | int ib_sa_path_rec_get(struct ib_device *device, u8 port_num, |
| 601 | struct ib_sa_path_rec *rec, |
| 602 | ib_sa_comp_mask comp_mask, |
Hal Rosenstock | f13f9f5 | 2005-07-27 11:45:46 -0700 | [diff] [blame] | 603 | int timeout_ms, unsigned int __nocast gfp_mask, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | void (*callback)(int status, |
| 605 | struct ib_sa_path_rec *resp, |
| 606 | void *context), |
| 607 | void *context, |
| 608 | struct ib_sa_query **sa_query) |
| 609 | { |
| 610 | struct ib_sa_path_query *query; |
| 611 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); |
| 612 | struct ib_sa_port *port = &sa_dev->port[port_num - sa_dev->start_port]; |
| 613 | struct ib_mad_agent *agent = port->agent; |
| 614 | int ret; |
| 615 | |
| 616 | query = kmalloc(sizeof *query, gfp_mask); |
| 617 | if (!query) |
| 618 | return -ENOMEM; |
| 619 | query->sa_query.mad = kmalloc(sizeof *query->sa_query.mad, gfp_mask); |
| 620 | if (!query->sa_query.mad) { |
| 621 | kfree(query); |
| 622 | return -ENOMEM; |
| 623 | } |
| 624 | |
| 625 | query->callback = callback; |
| 626 | query->context = context; |
| 627 | |
| 628 | init_mad(query->sa_query.mad, agent); |
| 629 | |
Roland Dreier | e4f50f0 | 2005-05-25 12:31:29 -0700 | [diff] [blame] | 630 | query->sa_query.callback = callback ? ib_sa_path_rec_callback : NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | query->sa_query.release = ib_sa_path_rec_release; |
| 632 | query->sa_query.port = port; |
| 633 | query->sa_query.mad->mad_hdr.method = IB_MGMT_METHOD_GET; |
| 634 | query->sa_query.mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_PATH_REC); |
| 635 | query->sa_query.mad->sa_hdr.comp_mask = comp_mask; |
| 636 | |
| 637 | ib_pack(path_rec_table, ARRAY_SIZE(path_rec_table), |
| 638 | rec, query->sa_query.mad->data); |
| 639 | |
| 640 | *sa_query = &query->sa_query; |
Roland Dreier | dae4c1d | 2005-06-27 14:36:46 -0700 | [diff] [blame] | 641 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | ret = send_mad(&query->sa_query, timeout_ms); |
Roland Dreier | dae4c1d | 2005-06-27 14:36:46 -0700 | [diff] [blame] | 643 | if (ret < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | *sa_query = NULL; |
| 645 | kfree(query->sa_query.mad); |
| 646 | kfree(query); |
| 647 | } |
| 648 | |
Roland Dreier | dae4c1d | 2005-06-27 14:36:46 -0700 | [diff] [blame] | 649 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | } |
| 651 | EXPORT_SYMBOL(ib_sa_path_rec_get); |
| 652 | |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 653 | static void ib_sa_service_rec_callback(struct ib_sa_query *sa_query, |
| 654 | int status, |
| 655 | struct ib_sa_mad *mad) |
| 656 | { |
| 657 | struct ib_sa_service_query *query = |
| 658 | container_of(sa_query, struct ib_sa_service_query, sa_query); |
| 659 | |
| 660 | if (mad) { |
| 661 | struct ib_sa_service_rec rec; |
| 662 | |
| 663 | ib_unpack(service_rec_table, ARRAY_SIZE(service_rec_table), |
| 664 | mad->data, &rec); |
| 665 | query->callback(status, &rec, query->context); |
| 666 | } else |
| 667 | query->callback(status, NULL, query->context); |
| 668 | } |
| 669 | |
| 670 | static void ib_sa_service_rec_release(struct ib_sa_query *sa_query) |
| 671 | { |
| 672 | kfree(sa_query->mad); |
| 673 | kfree(container_of(sa_query, struct ib_sa_service_query, sa_query)); |
| 674 | } |
| 675 | |
| 676 | /** |
| 677 | * ib_sa_service_rec_query - Start Service Record operation |
| 678 | * @device:device to send request on |
| 679 | * @port_num: port number to send request on |
| 680 | * @method:SA method - should be get, set, or delete |
| 681 | * @rec:Service Record to send in request |
| 682 | * @comp_mask:component mask to send in request |
| 683 | * @timeout_ms:time to wait for response |
| 684 | * @gfp_mask:GFP mask to use for internal allocations |
| 685 | * @callback:function called when request completes, times out or is |
| 686 | * canceled |
| 687 | * @context:opaque user context passed to callback |
| 688 | * @sa_query:request context, used to cancel request |
| 689 | * |
| 690 | * Send a Service Record set/get/delete to the SA to register, |
| 691 | * unregister or query a service record. |
| 692 | * The callback function will be called when the request completes (or |
| 693 | * fails); status is 0 for a successful response, -EINTR if the query |
| 694 | * is canceled, -ETIMEDOUT is the query timed out, or -EIO if an error |
| 695 | * occurred sending the query. The resp parameter of the callback is |
| 696 | * only valid if status is 0. |
| 697 | * |
| 698 | * If the return value of ib_sa_service_rec_query() is negative, it is an |
| 699 | * error code. Otherwise it is a request ID that can be used to cancel |
| 700 | * the query. |
| 701 | */ |
| 702 | int ib_sa_service_rec_query(struct ib_device *device, u8 port_num, u8 method, |
| 703 | struct ib_sa_service_rec *rec, |
| 704 | ib_sa_comp_mask comp_mask, |
Hal Rosenstock | f13f9f5 | 2005-07-27 11:45:46 -0700 | [diff] [blame] | 705 | int timeout_ms, unsigned int __nocast gfp_mask, |
Hal Rosenstock | cbae32c | 2005-07-27 11:45:38 -0700 | [diff] [blame] | 706 | void (*callback)(int status, |
| 707 | struct ib_sa_service_rec *resp, |
| 708 | void *context), |
| 709 | void *context, |
| 710 | struct ib_sa_query **sa_query) |
| 711 | { |
| 712 | struct ib_sa_service_query *query; |
| 713 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); |
| 714 | struct ib_sa_port *port = &sa_dev->port[port_num - sa_dev->start_port]; |
| 715 | struct ib_mad_agent *agent = port->agent; |
| 716 | int ret; |
| 717 | |
| 718 | if (method != IB_MGMT_METHOD_GET && |
| 719 | method != IB_MGMT_METHOD_SET && |
| 720 | method != IB_SA_METHOD_DELETE) |
| 721 | return -EINVAL; |
| 722 | |
| 723 | query = kmalloc(sizeof *query, gfp_mask); |
| 724 | if (!query) |
| 725 | return -ENOMEM; |
| 726 | query->sa_query.mad = kmalloc(sizeof *query->sa_query.mad, gfp_mask); |
| 727 | if (!query->sa_query.mad) { |
| 728 | kfree(query); |
| 729 | return -ENOMEM; |
| 730 | } |
| 731 | |
| 732 | query->callback = callback; |
| 733 | query->context = context; |
| 734 | |
| 735 | init_mad(query->sa_query.mad, agent); |
| 736 | |
| 737 | query->sa_query.callback = callback ? ib_sa_service_rec_callback : NULL; |
| 738 | query->sa_query.release = ib_sa_service_rec_release; |
| 739 | query->sa_query.port = port; |
| 740 | query->sa_query.mad->mad_hdr.method = method; |
| 741 | query->sa_query.mad->mad_hdr.attr_id = |
| 742 | cpu_to_be16(IB_SA_ATTR_SERVICE_REC); |
| 743 | query->sa_query.mad->sa_hdr.comp_mask = comp_mask; |
| 744 | |
| 745 | ib_pack(service_rec_table, ARRAY_SIZE(service_rec_table), |
| 746 | rec, query->sa_query.mad->data); |
| 747 | |
| 748 | *sa_query = &query->sa_query; |
| 749 | |
| 750 | ret = send_mad(&query->sa_query, timeout_ms); |
| 751 | if (ret < 0) { |
| 752 | *sa_query = NULL; |
| 753 | kfree(query->sa_query.mad); |
| 754 | kfree(query); |
| 755 | } |
| 756 | |
| 757 | return ret; |
| 758 | } |
| 759 | EXPORT_SYMBOL(ib_sa_service_rec_query); |
| 760 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | static void ib_sa_mcmember_rec_callback(struct ib_sa_query *sa_query, |
| 762 | int status, |
| 763 | struct ib_sa_mad *mad) |
| 764 | { |
| 765 | struct ib_sa_mcmember_query *query = |
| 766 | container_of(sa_query, struct ib_sa_mcmember_query, sa_query); |
| 767 | |
| 768 | if (mad) { |
| 769 | struct ib_sa_mcmember_rec rec; |
| 770 | |
| 771 | ib_unpack(mcmember_rec_table, ARRAY_SIZE(mcmember_rec_table), |
| 772 | mad->data, &rec); |
| 773 | query->callback(status, &rec, query->context); |
| 774 | } else |
| 775 | query->callback(status, NULL, query->context); |
| 776 | } |
| 777 | |
| 778 | static void ib_sa_mcmember_rec_release(struct ib_sa_query *sa_query) |
| 779 | { |
| 780 | kfree(sa_query->mad); |
| 781 | kfree(container_of(sa_query, struct ib_sa_mcmember_query, sa_query)); |
| 782 | } |
| 783 | |
| 784 | int ib_sa_mcmember_rec_query(struct ib_device *device, u8 port_num, |
| 785 | u8 method, |
| 786 | struct ib_sa_mcmember_rec *rec, |
| 787 | ib_sa_comp_mask comp_mask, |
Hal Rosenstock | f13f9f5 | 2005-07-27 11:45:46 -0700 | [diff] [blame] | 788 | int timeout_ms, unsigned int __nocast gfp_mask, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | void (*callback)(int status, |
| 790 | struct ib_sa_mcmember_rec *resp, |
| 791 | void *context), |
| 792 | void *context, |
| 793 | struct ib_sa_query **sa_query) |
| 794 | { |
| 795 | struct ib_sa_mcmember_query *query; |
| 796 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); |
| 797 | struct ib_sa_port *port = &sa_dev->port[port_num - sa_dev->start_port]; |
| 798 | struct ib_mad_agent *agent = port->agent; |
| 799 | int ret; |
| 800 | |
| 801 | query = kmalloc(sizeof *query, gfp_mask); |
| 802 | if (!query) |
| 803 | return -ENOMEM; |
| 804 | query->sa_query.mad = kmalloc(sizeof *query->sa_query.mad, gfp_mask); |
| 805 | if (!query->sa_query.mad) { |
| 806 | kfree(query); |
| 807 | return -ENOMEM; |
| 808 | } |
| 809 | |
| 810 | query->callback = callback; |
| 811 | query->context = context; |
| 812 | |
| 813 | init_mad(query->sa_query.mad, agent); |
| 814 | |
Roland Dreier | e4f50f0 | 2005-05-25 12:31:29 -0700 | [diff] [blame] | 815 | query->sa_query.callback = callback ? ib_sa_mcmember_rec_callback : NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | query->sa_query.release = ib_sa_mcmember_rec_release; |
| 817 | query->sa_query.port = port; |
| 818 | query->sa_query.mad->mad_hdr.method = method; |
| 819 | query->sa_query.mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_MC_MEMBER_REC); |
| 820 | query->sa_query.mad->sa_hdr.comp_mask = comp_mask; |
| 821 | |
| 822 | ib_pack(mcmember_rec_table, ARRAY_SIZE(mcmember_rec_table), |
| 823 | rec, query->sa_query.mad->data); |
| 824 | |
| 825 | *sa_query = &query->sa_query; |
Roland Dreier | dae4c1d | 2005-06-27 14:36:46 -0700 | [diff] [blame] | 826 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | ret = send_mad(&query->sa_query, timeout_ms); |
Roland Dreier | dae4c1d | 2005-06-27 14:36:46 -0700 | [diff] [blame] | 828 | if (ret < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | *sa_query = NULL; |
| 830 | kfree(query->sa_query.mad); |
| 831 | kfree(query); |
| 832 | } |
| 833 | |
Roland Dreier | dae4c1d | 2005-06-27 14:36:46 -0700 | [diff] [blame] | 834 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | } |
| 836 | EXPORT_SYMBOL(ib_sa_mcmember_rec_query); |
| 837 | |
| 838 | static void send_handler(struct ib_mad_agent *agent, |
| 839 | struct ib_mad_send_wc *mad_send_wc) |
| 840 | { |
| 841 | struct ib_sa_query *query; |
| 842 | unsigned long flags; |
| 843 | |
| 844 | spin_lock_irqsave(&idr_lock, flags); |
| 845 | query = idr_find(&query_idr, mad_send_wc->wr_id); |
| 846 | spin_unlock_irqrestore(&idr_lock, flags); |
| 847 | |
| 848 | if (!query) |
| 849 | return; |
| 850 | |
Roland Dreier | e4f50f0 | 2005-05-25 12:31:29 -0700 | [diff] [blame] | 851 | if (query->callback) |
| 852 | switch (mad_send_wc->status) { |
| 853 | case IB_WC_SUCCESS: |
| 854 | /* No callback -- already got recv */ |
| 855 | break; |
| 856 | case IB_WC_RESP_TIMEOUT_ERR: |
| 857 | query->callback(query, -ETIMEDOUT, NULL); |
| 858 | break; |
| 859 | case IB_WC_WR_FLUSH_ERR: |
| 860 | query->callback(query, -EINTR, NULL); |
| 861 | break; |
| 862 | default: |
| 863 | query->callback(query, -EIO, NULL); |
| 864 | break; |
| 865 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | |
| 867 | dma_unmap_single(agent->device->dma_device, |
| 868 | pci_unmap_addr(query, mapping), |
| 869 | sizeof (struct ib_sa_mad), |
| 870 | DMA_TO_DEVICE); |
| 871 | kref_put(&query->sm_ah->ref, free_sm_ah); |
| 872 | |
| 873 | query->release(query); |
| 874 | |
| 875 | spin_lock_irqsave(&idr_lock, flags); |
| 876 | idr_remove(&query_idr, mad_send_wc->wr_id); |
| 877 | spin_unlock_irqrestore(&idr_lock, flags); |
| 878 | } |
| 879 | |
| 880 | static void recv_handler(struct ib_mad_agent *mad_agent, |
| 881 | struct ib_mad_recv_wc *mad_recv_wc) |
| 882 | { |
| 883 | struct ib_sa_query *query; |
| 884 | unsigned long flags; |
| 885 | |
| 886 | spin_lock_irqsave(&idr_lock, flags); |
| 887 | query = idr_find(&query_idr, mad_recv_wc->wc->wr_id); |
| 888 | spin_unlock_irqrestore(&idr_lock, flags); |
| 889 | |
Roland Dreier | e4f50f0 | 2005-05-25 12:31:29 -0700 | [diff] [blame] | 890 | if (query && query->callback) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | if (mad_recv_wc->wc->status == IB_WC_SUCCESS) |
| 892 | query->callback(query, |
| 893 | mad_recv_wc->recv_buf.mad->mad_hdr.status ? |
| 894 | -EINVAL : 0, |
| 895 | (struct ib_sa_mad *) mad_recv_wc->recv_buf.mad); |
| 896 | else |
| 897 | query->callback(query, -EIO, NULL); |
| 898 | } |
| 899 | |
| 900 | ib_free_recv_mad(mad_recv_wc); |
| 901 | } |
| 902 | |
| 903 | static void ib_sa_add_one(struct ib_device *device) |
| 904 | { |
| 905 | struct ib_sa_device *sa_dev; |
| 906 | int s, e, i; |
| 907 | |
| 908 | if (device->node_type == IB_NODE_SWITCH) |
| 909 | s = e = 0; |
| 910 | else { |
| 911 | s = 1; |
| 912 | e = device->phys_port_cnt; |
| 913 | } |
| 914 | |
| 915 | sa_dev = kmalloc(sizeof *sa_dev + |
| 916 | (e - s + 1) * sizeof (struct ib_sa_port), |
| 917 | GFP_KERNEL); |
| 918 | if (!sa_dev) |
| 919 | return; |
| 920 | |
| 921 | sa_dev->start_port = s; |
| 922 | sa_dev->end_port = e; |
| 923 | |
| 924 | for (i = 0; i <= e - s; ++i) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | sa_dev->port[i].sm_ah = NULL; |
| 926 | sa_dev->port[i].port_num = i + s; |
| 927 | spin_lock_init(&sa_dev->port[i].ah_lock); |
| 928 | |
| 929 | sa_dev->port[i].agent = |
| 930 | ib_register_mad_agent(device, i + s, IB_QPT_GSI, |
| 931 | NULL, 0, send_handler, |
| 932 | recv_handler, sa_dev); |
| 933 | if (IS_ERR(sa_dev->port[i].agent)) |
| 934 | goto err; |
| 935 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | INIT_WORK(&sa_dev->port[i].update_task, |
| 937 | update_sm_ah, &sa_dev->port[i]); |
| 938 | } |
| 939 | |
| 940 | ib_set_client_data(device, &sa_client, sa_dev); |
| 941 | |
| 942 | /* |
| 943 | * We register our event handler after everything is set up, |
| 944 | * and then update our cached info after the event handler is |
| 945 | * registered to avoid any problems if a port changes state |
| 946 | * during our initialization. |
| 947 | */ |
| 948 | |
| 949 | INIT_IB_EVENT_HANDLER(&sa_dev->event_handler, device, ib_sa_event); |
| 950 | if (ib_register_event_handler(&sa_dev->event_handler)) |
| 951 | goto err; |
| 952 | |
| 953 | for (i = 0; i <= e - s; ++i) |
| 954 | update_sm_ah(&sa_dev->port[i]); |
| 955 | |
| 956 | return; |
| 957 | |
| 958 | err: |
Hal Rosenstock | b82cab6 | 2005-07-27 11:45:22 -0700 | [diff] [blame] | 959 | while (--i >= 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | ib_unregister_mad_agent(sa_dev->port[i].agent); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | |
| 962 | kfree(sa_dev); |
| 963 | |
| 964 | return; |
| 965 | } |
| 966 | |
| 967 | static void ib_sa_remove_one(struct ib_device *device) |
| 968 | { |
| 969 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); |
| 970 | int i; |
| 971 | |
| 972 | if (!sa_dev) |
| 973 | return; |
| 974 | |
| 975 | ib_unregister_event_handler(&sa_dev->event_handler); |
| 976 | |
| 977 | for (i = 0; i <= sa_dev->end_port - sa_dev->start_port; ++i) { |
| 978 | ib_unregister_mad_agent(sa_dev->port[i].agent); |
| 979 | kref_put(&sa_dev->port[i].sm_ah->ref, free_sm_ah); |
| 980 | } |
| 981 | |
| 982 | kfree(sa_dev); |
| 983 | } |
| 984 | |
| 985 | static int __init ib_sa_init(void) |
| 986 | { |
| 987 | int ret; |
| 988 | |
| 989 | spin_lock_init(&idr_lock); |
| 990 | spin_lock_init(&tid_lock); |
| 991 | |
| 992 | get_random_bytes(&tid, sizeof tid); |
| 993 | |
| 994 | ret = ib_register_client(&sa_client); |
| 995 | if (ret) |
| 996 | printk(KERN_ERR "Couldn't register ib_sa client\n"); |
| 997 | |
| 998 | return ret; |
| 999 | } |
| 1000 | |
| 1001 | static void __exit ib_sa_cleanup(void) |
| 1002 | { |
| 1003 | ib_unregister_client(&sa_client); |
| 1004 | } |
| 1005 | |
| 1006 | module_init(ib_sa_init); |
| 1007 | module_exit(ib_sa_cleanup); |