Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. |
| 3 | * Copyright (c) 2004 Infinicon Corporation. All rights reserved. |
| 4 | * Copyright (c) 2004 Intel Corporation. All rights reserved. |
| 5 | * Copyright (c) 2004 Topspin Corporation. All rights reserved. |
| 6 | * Copyright (c) 2004 Voltaire Corporation. All rights reserved. |
Roland Dreier | 2a1d9b7 | 2005-08-10 23:03:10 -0700 | [diff] [blame] | 7 | * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 8 | * Copyright (c) 2005 Cisco Systems. All rights reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * |
| 10 | * This software is available to you under a choice of one of two |
| 11 | * licenses. You may choose to be licensed under the terms of the GNU |
| 12 | * General Public License (GPL) Version 2, available from the file |
| 13 | * COPYING in the main directory of this source tree, or the |
| 14 | * OpenIB.org BSD license below: |
| 15 | * |
| 16 | * Redistribution and use in source and binary forms, with or |
| 17 | * without modification, are permitted provided that the following |
| 18 | * conditions are met: |
| 19 | * |
| 20 | * - Redistributions of source code must retain the above |
| 21 | * copyright notice, this list of conditions and the following |
| 22 | * disclaimer. |
| 23 | * |
| 24 | * - Redistributions in binary form must reproduce the above |
| 25 | * copyright notice, this list of conditions and the following |
| 26 | * disclaimer in the documentation and/or other materials |
| 27 | * provided with the distribution. |
| 28 | * |
| 29 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 30 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 31 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 32 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 33 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 34 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 35 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 36 | * SOFTWARE. |
| 37 | * |
| 38 | * $Id: verbs.c 1349 2004-12-16 21:09:43Z roland $ |
| 39 | */ |
| 40 | |
| 41 | #include <linux/errno.h> |
| 42 | #include <linux/err.h> |
Tim Schmielau | 8c65b4a | 2005-11-07 00:59:43 -0800 | [diff] [blame] | 43 | #include <linux/string.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
Roland Dreier | a4d61e8 | 2005-08-25 13:40:04 -0700 | [diff] [blame] | 45 | #include <rdma/ib_verbs.h> |
| 46 | #include <rdma/ib_cache.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
| 48 | /* Protection domains */ |
| 49 | |
| 50 | struct ib_pd *ib_alloc_pd(struct ib_device *device) |
| 51 | { |
| 52 | struct ib_pd *pd; |
| 53 | |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 54 | pd = device->alloc_pd(device, NULL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
| 56 | if (!IS_ERR(pd)) { |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 57 | pd->device = device; |
| 58 | pd->uobject = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | atomic_set(&pd->usecnt, 0); |
| 60 | } |
| 61 | |
| 62 | return pd; |
| 63 | } |
| 64 | EXPORT_SYMBOL(ib_alloc_pd); |
| 65 | |
| 66 | int ib_dealloc_pd(struct ib_pd *pd) |
| 67 | { |
| 68 | if (atomic_read(&pd->usecnt)) |
| 69 | return -EBUSY; |
| 70 | |
| 71 | return pd->device->dealloc_pd(pd); |
| 72 | } |
| 73 | EXPORT_SYMBOL(ib_dealloc_pd); |
| 74 | |
| 75 | /* Address handles */ |
| 76 | |
| 77 | struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) |
| 78 | { |
| 79 | struct ib_ah *ah; |
| 80 | |
| 81 | ah = pd->device->create_ah(pd, ah_attr); |
| 82 | |
| 83 | if (!IS_ERR(ah)) { |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 84 | ah->device = pd->device; |
| 85 | ah->pd = pd; |
| 86 | ah->uobject = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | atomic_inc(&pd->usecnt); |
| 88 | } |
| 89 | |
| 90 | return ah; |
| 91 | } |
| 92 | EXPORT_SYMBOL(ib_create_ah); |
| 93 | |
Hal Rosenstock | 513789e | 2005-07-27 11:45:34 -0700 | [diff] [blame] | 94 | struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, |
| 95 | struct ib_grh *grh, u8 port_num) |
| 96 | { |
| 97 | struct ib_ah_attr ah_attr; |
| 98 | u32 flow_class; |
| 99 | u16 gid_index; |
| 100 | int ret; |
| 101 | |
| 102 | memset(&ah_attr, 0, sizeof ah_attr); |
| 103 | ah_attr.dlid = wc->slid; |
| 104 | ah_attr.sl = wc->sl; |
| 105 | ah_attr.src_path_bits = wc->dlid_path_bits; |
| 106 | ah_attr.port_num = port_num; |
| 107 | |
| 108 | if (wc->wc_flags & IB_WC_GRH) { |
| 109 | ah_attr.ah_flags = IB_AH_GRH; |
Ralph Campbell | 4f8448d | 2006-01-06 16:43:47 -0800 | [diff] [blame] | 110 | ah_attr.grh.dgid = grh->sgid; |
Hal Rosenstock | 513789e | 2005-07-27 11:45:34 -0700 | [diff] [blame] | 111 | |
Ralph Campbell | 4f8448d | 2006-01-06 16:43:47 -0800 | [diff] [blame] | 112 | ret = ib_find_cached_gid(pd->device, &grh->dgid, &port_num, |
Hal Rosenstock | 513789e | 2005-07-27 11:45:34 -0700 | [diff] [blame] | 113 | &gid_index); |
| 114 | if (ret) |
| 115 | return ERR_PTR(ret); |
| 116 | |
| 117 | ah_attr.grh.sgid_index = (u8) gid_index; |
Hal Rosenstock | 497677a | 2005-07-27 11:45:35 -0700 | [diff] [blame] | 118 | flow_class = be32_to_cpu(grh->version_tclass_flow); |
Hal Rosenstock | 513789e | 2005-07-27 11:45:34 -0700 | [diff] [blame] | 119 | ah_attr.grh.flow_label = flow_class & 0xFFFFF; |
| 120 | ah_attr.grh.traffic_class = (flow_class >> 20) & 0xFF; |
| 121 | ah_attr.grh.hop_limit = grh->hop_limit; |
| 122 | } |
| 123 | |
| 124 | return ib_create_ah(pd, &ah_attr); |
| 125 | } |
| 126 | EXPORT_SYMBOL(ib_create_ah_from_wc); |
| 127 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) |
| 129 | { |
| 130 | return ah->device->modify_ah ? |
| 131 | ah->device->modify_ah(ah, ah_attr) : |
| 132 | -ENOSYS; |
| 133 | } |
| 134 | EXPORT_SYMBOL(ib_modify_ah); |
| 135 | |
| 136 | int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) |
| 137 | { |
| 138 | return ah->device->query_ah ? |
| 139 | ah->device->query_ah(ah, ah_attr) : |
| 140 | -ENOSYS; |
| 141 | } |
| 142 | EXPORT_SYMBOL(ib_query_ah); |
| 143 | |
| 144 | int ib_destroy_ah(struct ib_ah *ah) |
| 145 | { |
| 146 | struct ib_pd *pd; |
| 147 | int ret; |
| 148 | |
| 149 | pd = ah->pd; |
| 150 | ret = ah->device->destroy_ah(ah); |
| 151 | if (!ret) |
| 152 | atomic_dec(&pd->usecnt); |
| 153 | |
| 154 | return ret; |
| 155 | } |
| 156 | EXPORT_SYMBOL(ib_destroy_ah); |
| 157 | |
Roland Dreier | d41fcc6 | 2005-08-18 12:23:08 -0700 | [diff] [blame] | 158 | /* Shared receive queues */ |
| 159 | |
| 160 | struct ib_srq *ib_create_srq(struct ib_pd *pd, |
| 161 | struct ib_srq_init_attr *srq_init_attr) |
| 162 | { |
| 163 | struct ib_srq *srq; |
| 164 | |
| 165 | if (!pd->device->create_srq) |
| 166 | return ERR_PTR(-ENOSYS); |
| 167 | |
| 168 | srq = pd->device->create_srq(pd, srq_init_attr, NULL); |
| 169 | |
| 170 | if (!IS_ERR(srq)) { |
| 171 | srq->device = pd->device; |
| 172 | srq->pd = pd; |
| 173 | srq->uobject = NULL; |
| 174 | srq->event_handler = srq_init_attr->event_handler; |
| 175 | srq->srq_context = srq_init_attr->srq_context; |
| 176 | atomic_inc(&pd->usecnt); |
| 177 | atomic_set(&srq->usecnt, 0); |
| 178 | } |
| 179 | |
| 180 | return srq; |
| 181 | } |
| 182 | EXPORT_SYMBOL(ib_create_srq); |
| 183 | |
| 184 | int ib_modify_srq(struct ib_srq *srq, |
| 185 | struct ib_srq_attr *srq_attr, |
| 186 | enum ib_srq_attr_mask srq_attr_mask) |
| 187 | { |
| 188 | return srq->device->modify_srq(srq, srq_attr, srq_attr_mask); |
| 189 | } |
| 190 | EXPORT_SYMBOL(ib_modify_srq); |
| 191 | |
| 192 | int ib_query_srq(struct ib_srq *srq, |
| 193 | struct ib_srq_attr *srq_attr) |
| 194 | { |
| 195 | return srq->device->query_srq ? |
| 196 | srq->device->query_srq(srq, srq_attr) : -ENOSYS; |
| 197 | } |
| 198 | EXPORT_SYMBOL(ib_query_srq); |
| 199 | |
| 200 | int ib_destroy_srq(struct ib_srq *srq) |
| 201 | { |
| 202 | struct ib_pd *pd; |
| 203 | int ret; |
| 204 | |
| 205 | if (atomic_read(&srq->usecnt)) |
| 206 | return -EBUSY; |
| 207 | |
| 208 | pd = srq->pd; |
| 209 | |
| 210 | ret = srq->device->destroy_srq(srq); |
| 211 | if (!ret) |
| 212 | atomic_dec(&pd->usecnt); |
| 213 | |
| 214 | return ret; |
| 215 | } |
| 216 | EXPORT_SYMBOL(ib_destroy_srq); |
| 217 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | /* Queue pairs */ |
| 219 | |
| 220 | struct ib_qp *ib_create_qp(struct ib_pd *pd, |
| 221 | struct ib_qp_init_attr *qp_init_attr) |
| 222 | { |
| 223 | struct ib_qp *qp; |
| 224 | |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 225 | qp = pd->device->create_qp(pd, qp_init_attr, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | |
| 227 | if (!IS_ERR(qp)) { |
| 228 | qp->device = pd->device; |
| 229 | qp->pd = pd; |
| 230 | qp->send_cq = qp_init_attr->send_cq; |
| 231 | qp->recv_cq = qp_init_attr->recv_cq; |
| 232 | qp->srq = qp_init_attr->srq; |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 233 | qp->uobject = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | qp->event_handler = qp_init_attr->event_handler; |
| 235 | qp->qp_context = qp_init_attr->qp_context; |
| 236 | qp->qp_type = qp_init_attr->qp_type; |
| 237 | atomic_inc(&pd->usecnt); |
| 238 | atomic_inc(&qp_init_attr->send_cq->usecnt); |
| 239 | atomic_inc(&qp_init_attr->recv_cq->usecnt); |
| 240 | if (qp_init_attr->srq) |
| 241 | atomic_inc(&qp_init_attr->srq->usecnt); |
| 242 | } |
| 243 | |
| 244 | return qp; |
| 245 | } |
| 246 | EXPORT_SYMBOL(ib_create_qp); |
| 247 | |
| 248 | int ib_modify_qp(struct ib_qp *qp, |
| 249 | struct ib_qp_attr *qp_attr, |
| 250 | int qp_attr_mask) |
| 251 | { |
| 252 | return qp->device->modify_qp(qp, qp_attr, qp_attr_mask); |
| 253 | } |
| 254 | EXPORT_SYMBOL(ib_modify_qp); |
| 255 | |
| 256 | int ib_query_qp(struct ib_qp *qp, |
| 257 | struct ib_qp_attr *qp_attr, |
| 258 | int qp_attr_mask, |
| 259 | struct ib_qp_init_attr *qp_init_attr) |
| 260 | { |
| 261 | return qp->device->query_qp ? |
| 262 | qp->device->query_qp(qp, qp_attr, qp_attr_mask, qp_init_attr) : |
| 263 | -ENOSYS; |
| 264 | } |
| 265 | EXPORT_SYMBOL(ib_query_qp); |
| 266 | |
| 267 | int ib_destroy_qp(struct ib_qp *qp) |
| 268 | { |
| 269 | struct ib_pd *pd; |
| 270 | struct ib_cq *scq, *rcq; |
| 271 | struct ib_srq *srq; |
| 272 | int ret; |
| 273 | |
| 274 | pd = qp->pd; |
| 275 | scq = qp->send_cq; |
| 276 | rcq = qp->recv_cq; |
| 277 | srq = qp->srq; |
| 278 | |
| 279 | ret = qp->device->destroy_qp(qp); |
| 280 | if (!ret) { |
| 281 | atomic_dec(&pd->usecnt); |
| 282 | atomic_dec(&scq->usecnt); |
| 283 | atomic_dec(&rcq->usecnt); |
| 284 | if (srq) |
| 285 | atomic_dec(&srq->usecnt); |
| 286 | } |
| 287 | |
| 288 | return ret; |
| 289 | } |
| 290 | EXPORT_SYMBOL(ib_destroy_qp); |
| 291 | |
| 292 | /* Completion queues */ |
| 293 | |
| 294 | struct ib_cq *ib_create_cq(struct ib_device *device, |
| 295 | ib_comp_handler comp_handler, |
| 296 | void (*event_handler)(struct ib_event *, void *), |
| 297 | void *cq_context, int cqe) |
| 298 | { |
| 299 | struct ib_cq *cq; |
| 300 | |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 301 | cq = device->create_cq(device, cqe, NULL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | |
| 303 | if (!IS_ERR(cq)) { |
| 304 | cq->device = device; |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 305 | cq->uobject = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | cq->comp_handler = comp_handler; |
| 307 | cq->event_handler = event_handler; |
| 308 | cq->cq_context = cq_context; |
| 309 | atomic_set(&cq->usecnt, 0); |
| 310 | } |
| 311 | |
| 312 | return cq; |
| 313 | } |
| 314 | EXPORT_SYMBOL(ib_create_cq); |
| 315 | |
| 316 | int ib_destroy_cq(struct ib_cq *cq) |
| 317 | { |
| 318 | if (atomic_read(&cq->usecnt)) |
| 319 | return -EBUSY; |
| 320 | |
| 321 | return cq->device->destroy_cq(cq); |
| 322 | } |
| 323 | EXPORT_SYMBOL(ib_destroy_cq); |
| 324 | |
| 325 | int ib_resize_cq(struct ib_cq *cq, |
| 326 | int cqe) |
| 327 | { |
Roland Dreier | 40de2e5 | 2005-11-08 11:10:25 -0800 | [diff] [blame] | 328 | return cq->device->resize_cq ? |
| 329 | cq->device->resize_cq(cq, cqe) : -ENOSYS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | } |
| 331 | EXPORT_SYMBOL(ib_resize_cq); |
| 332 | |
| 333 | /* Memory regions */ |
| 334 | |
| 335 | struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags) |
| 336 | { |
| 337 | struct ib_mr *mr; |
| 338 | |
| 339 | mr = pd->device->get_dma_mr(pd, mr_access_flags); |
| 340 | |
| 341 | if (!IS_ERR(mr)) { |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 342 | mr->device = pd->device; |
| 343 | mr->pd = pd; |
| 344 | mr->uobject = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | atomic_inc(&pd->usecnt); |
| 346 | atomic_set(&mr->usecnt, 0); |
| 347 | } |
| 348 | |
| 349 | return mr; |
| 350 | } |
| 351 | EXPORT_SYMBOL(ib_get_dma_mr); |
| 352 | |
| 353 | struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd, |
| 354 | struct ib_phys_buf *phys_buf_array, |
| 355 | int num_phys_buf, |
| 356 | int mr_access_flags, |
| 357 | u64 *iova_start) |
| 358 | { |
| 359 | struct ib_mr *mr; |
| 360 | |
| 361 | mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf, |
| 362 | mr_access_flags, iova_start); |
| 363 | |
| 364 | if (!IS_ERR(mr)) { |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 365 | mr->device = pd->device; |
| 366 | mr->pd = pd; |
| 367 | mr->uobject = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | atomic_inc(&pd->usecnt); |
| 369 | atomic_set(&mr->usecnt, 0); |
| 370 | } |
| 371 | |
| 372 | return mr; |
| 373 | } |
| 374 | EXPORT_SYMBOL(ib_reg_phys_mr); |
| 375 | |
| 376 | int ib_rereg_phys_mr(struct ib_mr *mr, |
| 377 | int mr_rereg_mask, |
| 378 | struct ib_pd *pd, |
| 379 | struct ib_phys_buf *phys_buf_array, |
| 380 | int num_phys_buf, |
| 381 | int mr_access_flags, |
| 382 | u64 *iova_start) |
| 383 | { |
| 384 | struct ib_pd *old_pd; |
| 385 | int ret; |
| 386 | |
| 387 | if (!mr->device->rereg_phys_mr) |
| 388 | return -ENOSYS; |
| 389 | |
| 390 | if (atomic_read(&mr->usecnt)) |
| 391 | return -EBUSY; |
| 392 | |
| 393 | old_pd = mr->pd; |
| 394 | |
| 395 | ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd, |
| 396 | phys_buf_array, num_phys_buf, |
| 397 | mr_access_flags, iova_start); |
| 398 | |
| 399 | if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) { |
| 400 | atomic_dec(&old_pd->usecnt); |
| 401 | atomic_inc(&pd->usecnt); |
| 402 | } |
| 403 | |
| 404 | return ret; |
| 405 | } |
| 406 | EXPORT_SYMBOL(ib_rereg_phys_mr); |
| 407 | |
| 408 | int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr) |
| 409 | { |
| 410 | return mr->device->query_mr ? |
| 411 | mr->device->query_mr(mr, mr_attr) : -ENOSYS; |
| 412 | } |
| 413 | EXPORT_SYMBOL(ib_query_mr); |
| 414 | |
| 415 | int ib_dereg_mr(struct ib_mr *mr) |
| 416 | { |
| 417 | struct ib_pd *pd; |
| 418 | int ret; |
| 419 | |
| 420 | if (atomic_read(&mr->usecnt)) |
| 421 | return -EBUSY; |
| 422 | |
| 423 | pd = mr->pd; |
| 424 | ret = mr->device->dereg_mr(mr); |
| 425 | if (!ret) |
| 426 | atomic_dec(&pd->usecnt); |
| 427 | |
| 428 | return ret; |
| 429 | } |
| 430 | EXPORT_SYMBOL(ib_dereg_mr); |
| 431 | |
| 432 | /* Memory windows */ |
| 433 | |
| 434 | struct ib_mw *ib_alloc_mw(struct ib_pd *pd) |
| 435 | { |
| 436 | struct ib_mw *mw; |
| 437 | |
| 438 | if (!pd->device->alloc_mw) |
| 439 | return ERR_PTR(-ENOSYS); |
| 440 | |
| 441 | mw = pd->device->alloc_mw(pd); |
| 442 | if (!IS_ERR(mw)) { |
Roland Dreier | b5e81bf | 2005-07-07 17:57:11 -0700 | [diff] [blame] | 443 | mw->device = pd->device; |
| 444 | mw->pd = pd; |
| 445 | mw->uobject = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | atomic_inc(&pd->usecnt); |
| 447 | } |
| 448 | |
| 449 | return mw; |
| 450 | } |
| 451 | EXPORT_SYMBOL(ib_alloc_mw); |
| 452 | |
| 453 | int ib_dealloc_mw(struct ib_mw *mw) |
| 454 | { |
| 455 | struct ib_pd *pd; |
| 456 | int ret; |
| 457 | |
| 458 | pd = mw->pd; |
| 459 | ret = mw->device->dealloc_mw(mw); |
| 460 | if (!ret) |
| 461 | atomic_dec(&pd->usecnt); |
| 462 | |
| 463 | return ret; |
| 464 | } |
| 465 | EXPORT_SYMBOL(ib_dealloc_mw); |
| 466 | |
| 467 | /* "Fast" memory regions */ |
| 468 | |
| 469 | struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, |
| 470 | int mr_access_flags, |
| 471 | struct ib_fmr_attr *fmr_attr) |
| 472 | { |
| 473 | struct ib_fmr *fmr; |
| 474 | |
| 475 | if (!pd->device->alloc_fmr) |
| 476 | return ERR_PTR(-ENOSYS); |
| 477 | |
| 478 | fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr); |
| 479 | if (!IS_ERR(fmr)) { |
| 480 | fmr->device = pd->device; |
| 481 | fmr->pd = pd; |
| 482 | atomic_inc(&pd->usecnt); |
| 483 | } |
| 484 | |
| 485 | return fmr; |
| 486 | } |
| 487 | EXPORT_SYMBOL(ib_alloc_fmr); |
| 488 | |
| 489 | int ib_unmap_fmr(struct list_head *fmr_list) |
| 490 | { |
| 491 | struct ib_fmr *fmr; |
| 492 | |
| 493 | if (list_empty(fmr_list)) |
| 494 | return 0; |
| 495 | |
| 496 | fmr = list_entry(fmr_list->next, struct ib_fmr, list); |
| 497 | return fmr->device->unmap_fmr(fmr_list); |
| 498 | } |
| 499 | EXPORT_SYMBOL(ib_unmap_fmr); |
| 500 | |
| 501 | int ib_dealloc_fmr(struct ib_fmr *fmr) |
| 502 | { |
| 503 | struct ib_pd *pd; |
| 504 | int ret; |
| 505 | |
| 506 | pd = fmr->pd; |
| 507 | ret = fmr->device->dealloc_fmr(fmr); |
| 508 | if (!ret) |
| 509 | atomic_dec(&pd->usecnt); |
| 510 | |
| 511 | return ret; |
| 512 | } |
| 513 | EXPORT_SYMBOL(ib_dealloc_fmr); |
| 514 | |
| 515 | /* Multicast groups */ |
| 516 | |
| 517 | int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) |
| 518 | { |
Jack Morgenstein | 0c33aee | 2005-09-26 11:47:53 -0700 | [diff] [blame] | 519 | if (!qp->device->attach_mcast) |
| 520 | return -ENOSYS; |
| 521 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) |
| 522 | return -EINVAL; |
| 523 | |
| 524 | return qp->device->attach_mcast(qp, gid, lid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | } |
| 526 | EXPORT_SYMBOL(ib_attach_mcast); |
| 527 | |
| 528 | int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) |
| 529 | { |
Jack Morgenstein | 0c33aee | 2005-09-26 11:47:53 -0700 | [diff] [blame] | 530 | if (!qp->device->detach_mcast) |
| 531 | return -ENOSYS; |
| 532 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) |
| 533 | return -EINVAL; |
| 534 | |
| 535 | return qp->device->detach_mcast(qp, gid, lid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | } |
| 537 | EXPORT_SYMBOL(ib_detach_mcast); |