1 /* 2 * Copyright (c) 2005 Topspin Communications. All rights reserved. 3 * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved. 4 * Copyright (c) 2005 PathScale, Inc. All rights reserved. 5 * Copyright (c) 2006 Mellanox Technologies. All rights reserved. 6 * 7 * This software is available to you under a choice of one of two 8 * licenses. You may choose to be licensed under the terms of the GNU 9 * General Public License (GPL) Version 2, available from the file 10 * COPYING in the main directory of this source tree, or the 11 * OpenIB.org BSD license below: 12 * 13 * Redistribution and use in source and binary forms, with or 14 * without modification, are permitted provided that the following 15 * conditions are met: 16 * 17 * - Redistributions of source code must retain the above 18 * copyright notice, this list of conditions and the following 19 * disclaimer. 20 * 21 * - Redistributions in binary form must reproduce the above 22 * copyright notice, this list of conditions and the following 23 * disclaimer in the documentation and/or other materials 24 * provided with the distribution. 25 * 26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 33 * SOFTWARE. 34 */ 35 36 #include <linux/file.h> 37 #include <linux/fs.h> 38 #include <linux/slab.h> 39 #include <linux/sched.h> 40 41 #include <linux/uaccess.h> 42 43 #include <rdma/uverbs_types.h> 44 #include <rdma/uverbs_std_types.h> 45 #include "rdma_core.h" 46 47 #include "uverbs.h" 48 #include "core_priv.h" 49 50 /* 51 * Copy a response to userspace. If the provided 'resp' is larger than the 52 * user buffer it is silently truncated. If the user provided a larger buffer 53 * then the trailing portion is zero filled. 54 * 55 * These semantics are intended to support future extension of the output 56 * structures. 57 */ 58 static int uverbs_response(struct uverbs_attr_bundle *attrs, const void *resp, 59 size_t resp_len) 60 { 61 int ret; 62 63 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT)) 64 return uverbs_copy_to_struct_or_zero( 65 attrs, UVERBS_ATTR_CORE_OUT, resp, resp_len); 66 67 if (copy_to_user(attrs->ucore.outbuf, resp, 68 min(attrs->ucore.outlen, resp_len))) 69 return -EFAULT; 70 71 if (resp_len < attrs->ucore.outlen) { 72 /* 73 * Zero fill any extra memory that user 74 * space might have provided. 75 */ 76 ret = clear_user(attrs->ucore.outbuf + resp_len, 77 attrs->ucore.outlen - resp_len); 78 if (ret) 79 return -EFAULT; 80 } 81 82 return 0; 83 } 84 85 /* 86 * Copy a request from userspace. If the provided 'req' is larger than the 87 * user buffer then the user buffer is zero extended into the 'req'. If 'req' 88 * is smaller than the user buffer then the uncopied bytes in the user buffer 89 * must be zero. 90 */ 91 static int uverbs_request(struct uverbs_attr_bundle *attrs, void *req, 92 size_t req_len) 93 { 94 if (copy_from_user(req, attrs->ucore.inbuf, 95 min(attrs->ucore.inlen, req_len))) 96 return -EFAULT; 97 98 if (attrs->ucore.inlen < req_len) { 99 memset(req + attrs->ucore.inlen, 0, 100 req_len - attrs->ucore.inlen); 101 } else if (attrs->ucore.inlen > req_len) { 102 if (!ib_is_buffer_cleared(attrs->ucore.inbuf + req_len, 103 attrs->ucore.inlen - req_len)) 104 return -EOPNOTSUPP; 105 } 106 return 0; 107 } 108 109 /* 110 * Generate the value for the 'response_length' protocol used by write_ex. 111 * This is the number of bytes the kernel actually wrote. Userspace can use 112 * this to detect what structure members in the response the kernel 113 * understood. 114 */ 115 static u32 uverbs_response_length(struct uverbs_attr_bundle *attrs, 116 size_t resp_len) 117 { 118 return min_t(size_t, attrs->ucore.outlen, resp_len); 119 } 120 121 /* 122 * The iterator version of the request interface is for handlers that need to 123 * step over a flex array at the end of a command header. 124 */ 125 struct uverbs_req_iter { 126 const void __user *cur; 127 const void __user *end; 128 }; 129 130 static int uverbs_request_start(struct uverbs_attr_bundle *attrs, 131 struct uverbs_req_iter *iter, 132 void *req, 133 size_t req_len) 134 { 135 if (attrs->ucore.inlen < req_len) 136 return -ENOSPC; 137 138 if (copy_from_user(req, attrs->ucore.inbuf, req_len)) 139 return -EFAULT; 140 141 iter->cur = attrs->ucore.inbuf + req_len; 142 iter->end = attrs->ucore.inbuf + attrs->ucore.inlen; 143 return 0; 144 } 145 146 static int uverbs_request_next(struct uverbs_req_iter *iter, void *val, 147 size_t len) 148 { 149 if (iter->cur + len > iter->end) 150 return -ENOSPC; 151 152 if (copy_from_user(val, iter->cur, len)) 153 return -EFAULT; 154 155 iter->cur += len; 156 return 0; 157 } 158 159 static const void __user *uverbs_request_next_ptr(struct uverbs_req_iter *iter, 160 size_t len) 161 { 162 const void __user *res = iter->cur; 163 164 if (iter->cur + len > iter->end) 165 return ERR_PTR(-ENOSPC); 166 iter->cur += len; 167 return res; 168 } 169 170 static int uverbs_request_finish(struct uverbs_req_iter *iter) 171 { 172 if (!ib_is_buffer_cleared(iter->cur, iter->end - iter->cur)) 173 return -EOPNOTSUPP; 174 return 0; 175 } 176 177 static struct ib_uverbs_completion_event_file * 178 _ib_uverbs_lookup_comp_file(s32 fd, const struct uverbs_attr_bundle *attrs) 179 { 180 struct ib_uobject *uobj = ufd_get_read(UVERBS_OBJECT_COMP_CHANNEL, 181 fd, attrs); 182 183 if (IS_ERR(uobj)) 184 return (void *)uobj; 185 186 uverbs_uobject_get(uobj); 187 uobj_put_read(uobj); 188 189 return container_of(uobj, struct ib_uverbs_completion_event_file, 190 uobj); 191 } 192 #define ib_uverbs_lookup_comp_file(_fd, _ufile) \ 193 _ib_uverbs_lookup_comp_file((_fd)*typecheck(s32, _fd), _ufile) 194 195 static int ib_uverbs_get_context(struct uverbs_attr_bundle *attrs) 196 { 197 struct ib_uverbs_file *file = attrs->ufile; 198 struct ib_uverbs_get_context cmd; 199 struct ib_uverbs_get_context_resp resp; 200 struct ib_ucontext *ucontext; 201 struct file *filp; 202 struct ib_rdmacg_object cg_obj; 203 struct ib_device *ib_dev; 204 int ret; 205 206 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 207 if (ret) 208 return ret; 209 210 mutex_lock(&file->ucontext_lock); 211 ib_dev = srcu_dereference(file->device->ib_dev, 212 &file->device->disassociate_srcu); 213 if (!ib_dev) { 214 ret = -EIO; 215 goto err; 216 } 217 218 if (file->ucontext) { 219 ret = -EINVAL; 220 goto err; 221 } 222 223 ret = ib_rdmacg_try_charge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE); 224 if (ret) 225 goto err; 226 227 ucontext = ib_dev->ops.alloc_ucontext(ib_dev, &attrs->driver_udata); 228 if (IS_ERR(ucontext)) { 229 ret = PTR_ERR(ucontext); 230 goto err_alloc; 231 } 232 233 ucontext->device = ib_dev; 234 ucontext->cg_obj = cg_obj; 235 /* ufile is required when some objects are released */ 236 ucontext->ufile = file; 237 238 ucontext->closing = false; 239 ucontext->cleanup_retryable = false; 240 241 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING 242 mutex_init(&ucontext->per_mm_list_lock); 243 INIT_LIST_HEAD(&ucontext->per_mm_list); 244 if (!(ib_dev->attrs.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING)) 245 ucontext->invalidate_range = NULL; 246 247 #endif 248 249 resp.num_comp_vectors = file->device->num_comp_vectors; 250 251 ret = get_unused_fd_flags(O_CLOEXEC); 252 if (ret < 0) 253 goto err_free; 254 resp.async_fd = ret; 255 256 filp = ib_uverbs_alloc_async_event_file(file, ib_dev); 257 if (IS_ERR(filp)) { 258 ret = PTR_ERR(filp); 259 goto err_fd; 260 } 261 262 ret = uverbs_response(attrs, &resp, sizeof(resp)); 263 if (ret) 264 goto err_file; 265 266 fd_install(resp.async_fd, filp); 267 268 ucontext->res.type = RDMA_RESTRACK_CTX; 269 rdma_restrack_uadd(&ucontext->res); 270 271 /* 272 * Make sure that ib_uverbs_get_ucontext() sees the pointer update 273 * only after all writes to setup the ucontext have completed 274 */ 275 smp_store_release(&file->ucontext, ucontext); 276 277 mutex_unlock(&file->ucontext_lock); 278 279 return 0; 280 281 err_file: 282 ib_uverbs_free_async_event_file(file); 283 fput(filp); 284 285 err_fd: 286 put_unused_fd(resp.async_fd); 287 288 err_free: 289 ib_dev->ops.dealloc_ucontext(ucontext); 290 291 err_alloc: 292 ib_rdmacg_uncharge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE); 293 294 err: 295 mutex_unlock(&file->ucontext_lock); 296 return ret; 297 } 298 299 static void copy_query_dev_fields(struct ib_ucontext *ucontext, 300 struct ib_uverbs_query_device_resp *resp, 301 struct ib_device_attr *attr) 302 { 303 struct ib_device *ib_dev = ucontext->device; 304 305 resp->fw_ver = attr->fw_ver; 306 resp->node_guid = ib_dev->node_guid; 307 resp->sys_image_guid = attr->sys_image_guid; 308 resp->max_mr_size = attr->max_mr_size; 309 resp->page_size_cap = attr->page_size_cap; 310 resp->vendor_id = attr->vendor_id; 311 resp->vendor_part_id = attr->vendor_part_id; 312 resp->hw_ver = attr->hw_ver; 313 resp->max_qp = attr->max_qp; 314 resp->max_qp_wr = attr->max_qp_wr; 315 resp->device_cap_flags = lower_32_bits(attr->device_cap_flags); 316 resp->max_sge = min(attr->max_send_sge, attr->max_recv_sge); 317 resp->max_sge_rd = attr->max_sge_rd; 318 resp->max_cq = attr->max_cq; 319 resp->max_cqe = attr->max_cqe; 320 resp->max_mr = attr->max_mr; 321 resp->max_pd = attr->max_pd; 322 resp->max_qp_rd_atom = attr->max_qp_rd_atom; 323 resp->max_ee_rd_atom = attr->max_ee_rd_atom; 324 resp->max_res_rd_atom = attr->max_res_rd_atom; 325 resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom; 326 resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom; 327 resp->atomic_cap = attr->atomic_cap; 328 resp->max_ee = attr->max_ee; 329 resp->max_rdd = attr->max_rdd; 330 resp->max_mw = attr->max_mw; 331 resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp; 332 resp->max_raw_ethy_qp = attr->max_raw_ethy_qp; 333 resp->max_mcast_grp = attr->max_mcast_grp; 334 resp->max_mcast_qp_attach = attr->max_mcast_qp_attach; 335 resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach; 336 resp->max_ah = attr->max_ah; 337 resp->max_fmr = attr->max_fmr; 338 resp->max_map_per_fmr = attr->max_map_per_fmr; 339 resp->max_srq = attr->max_srq; 340 resp->max_srq_wr = attr->max_srq_wr; 341 resp->max_srq_sge = attr->max_srq_sge; 342 resp->max_pkeys = attr->max_pkeys; 343 resp->local_ca_ack_delay = attr->local_ca_ack_delay; 344 resp->phys_port_cnt = ib_dev->phys_port_cnt; 345 } 346 347 static int ib_uverbs_query_device(struct uverbs_attr_bundle *attrs) 348 { 349 struct ib_uverbs_query_device cmd; 350 struct ib_uverbs_query_device_resp resp; 351 struct ib_ucontext *ucontext; 352 int ret; 353 354 ucontext = ib_uverbs_get_ucontext(attrs); 355 if (IS_ERR(ucontext)) 356 return PTR_ERR(ucontext); 357 358 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 359 if (ret) 360 return ret; 361 362 memset(&resp, 0, sizeof resp); 363 copy_query_dev_fields(ucontext, &resp, &ucontext->device->attrs); 364 365 return uverbs_response(attrs, &resp, sizeof(resp)); 366 } 367 368 static int ib_uverbs_query_port(struct uverbs_attr_bundle *attrs) 369 { 370 struct ib_uverbs_query_port cmd; 371 struct ib_uverbs_query_port_resp resp; 372 struct ib_port_attr attr; 373 int ret; 374 struct ib_ucontext *ucontext; 375 struct ib_device *ib_dev; 376 377 ucontext = ib_uverbs_get_ucontext(attrs); 378 if (IS_ERR(ucontext)) 379 return PTR_ERR(ucontext); 380 ib_dev = ucontext->device; 381 382 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 383 if (ret) 384 return ret; 385 386 ret = ib_query_port(ib_dev, cmd.port_num, &attr); 387 if (ret) 388 return ret; 389 390 memset(&resp, 0, sizeof resp); 391 copy_port_attr_to_resp(&attr, &resp, ib_dev, cmd.port_num); 392 393 return uverbs_response(attrs, &resp, sizeof(resp)); 394 } 395 396 static int ib_uverbs_alloc_pd(struct uverbs_attr_bundle *attrs) 397 { 398 struct ib_uverbs_alloc_pd cmd; 399 struct ib_uverbs_alloc_pd_resp resp; 400 struct ib_uobject *uobj; 401 struct ib_pd *pd; 402 int ret; 403 struct ib_device *ib_dev; 404 405 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 406 if (ret) 407 return ret; 408 409 uobj = uobj_alloc(UVERBS_OBJECT_PD, attrs, &ib_dev); 410 if (IS_ERR(uobj)) 411 return PTR_ERR(uobj); 412 413 pd = ib_dev->ops.alloc_pd(ib_dev, uobj->context, &attrs->driver_udata); 414 if (IS_ERR(pd)) { 415 ret = PTR_ERR(pd); 416 goto err; 417 } 418 419 pd->device = ib_dev; 420 pd->uobject = uobj; 421 pd->__internal_mr = NULL; 422 atomic_set(&pd->usecnt, 0); 423 424 uobj->object = pd; 425 memset(&resp, 0, sizeof resp); 426 resp.pd_handle = uobj->id; 427 pd->res.type = RDMA_RESTRACK_PD; 428 rdma_restrack_uadd(&pd->res); 429 430 ret = uverbs_response(attrs, &resp, sizeof(resp)); 431 if (ret) 432 goto err_copy; 433 434 return uobj_alloc_commit(uobj); 435 436 err_copy: 437 ib_dealloc_pd(pd); 438 439 err: 440 uobj_alloc_abort(uobj); 441 return ret; 442 } 443 444 static int ib_uverbs_dealloc_pd(struct uverbs_attr_bundle *attrs) 445 { 446 struct ib_uverbs_dealloc_pd cmd; 447 int ret; 448 449 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 450 if (ret) 451 return ret; 452 453 return uobj_perform_destroy(UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 454 } 455 456 struct xrcd_table_entry { 457 struct rb_node node; 458 struct ib_xrcd *xrcd; 459 struct inode *inode; 460 }; 461 462 static int xrcd_table_insert(struct ib_uverbs_device *dev, 463 struct inode *inode, 464 struct ib_xrcd *xrcd) 465 { 466 struct xrcd_table_entry *entry, *scan; 467 struct rb_node **p = &dev->xrcd_tree.rb_node; 468 struct rb_node *parent = NULL; 469 470 entry = kmalloc(sizeof *entry, GFP_KERNEL); 471 if (!entry) 472 return -ENOMEM; 473 474 entry->xrcd = xrcd; 475 entry->inode = inode; 476 477 while (*p) { 478 parent = *p; 479 scan = rb_entry(parent, struct xrcd_table_entry, node); 480 481 if (inode < scan->inode) { 482 p = &(*p)->rb_left; 483 } else if (inode > scan->inode) { 484 p = &(*p)->rb_right; 485 } else { 486 kfree(entry); 487 return -EEXIST; 488 } 489 } 490 491 rb_link_node(&entry->node, parent, p); 492 rb_insert_color(&entry->node, &dev->xrcd_tree); 493 igrab(inode); 494 return 0; 495 } 496 497 static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev, 498 struct inode *inode) 499 { 500 struct xrcd_table_entry *entry; 501 struct rb_node *p = dev->xrcd_tree.rb_node; 502 503 while (p) { 504 entry = rb_entry(p, struct xrcd_table_entry, node); 505 506 if (inode < entry->inode) 507 p = p->rb_left; 508 else if (inode > entry->inode) 509 p = p->rb_right; 510 else 511 return entry; 512 } 513 514 return NULL; 515 } 516 517 static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode) 518 { 519 struct xrcd_table_entry *entry; 520 521 entry = xrcd_table_search(dev, inode); 522 if (!entry) 523 return NULL; 524 525 return entry->xrcd; 526 } 527 528 static void xrcd_table_delete(struct ib_uverbs_device *dev, 529 struct inode *inode) 530 { 531 struct xrcd_table_entry *entry; 532 533 entry = xrcd_table_search(dev, inode); 534 if (entry) { 535 iput(inode); 536 rb_erase(&entry->node, &dev->xrcd_tree); 537 kfree(entry); 538 } 539 } 540 541 static int ib_uverbs_open_xrcd(struct uverbs_attr_bundle *attrs) 542 { 543 struct ib_uverbs_device *ibudev = attrs->ufile->device; 544 struct ib_uverbs_open_xrcd cmd; 545 struct ib_uverbs_open_xrcd_resp resp; 546 struct ib_uxrcd_object *obj; 547 struct ib_xrcd *xrcd = NULL; 548 struct fd f = {NULL, 0}; 549 struct inode *inode = NULL; 550 int ret = 0; 551 int new_xrcd = 0; 552 struct ib_device *ib_dev; 553 554 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 555 if (ret) 556 return ret; 557 558 mutex_lock(&ibudev->xrcd_tree_mutex); 559 560 if (cmd.fd != -1) { 561 /* search for file descriptor */ 562 f = fdget(cmd.fd); 563 if (!f.file) { 564 ret = -EBADF; 565 goto err_tree_mutex_unlock; 566 } 567 568 inode = file_inode(f.file); 569 xrcd = find_xrcd(ibudev, inode); 570 if (!xrcd && !(cmd.oflags & O_CREAT)) { 571 /* no file descriptor. Need CREATE flag */ 572 ret = -EAGAIN; 573 goto err_tree_mutex_unlock; 574 } 575 576 if (xrcd && cmd.oflags & O_EXCL) { 577 ret = -EINVAL; 578 goto err_tree_mutex_unlock; 579 } 580 } 581 582 obj = (struct ib_uxrcd_object *)uobj_alloc(UVERBS_OBJECT_XRCD, attrs, 583 &ib_dev); 584 if (IS_ERR(obj)) { 585 ret = PTR_ERR(obj); 586 goto err_tree_mutex_unlock; 587 } 588 589 if (!xrcd) { 590 xrcd = ib_dev->ops.alloc_xrcd(ib_dev, obj->uobject.context, 591 &attrs->driver_udata); 592 if (IS_ERR(xrcd)) { 593 ret = PTR_ERR(xrcd); 594 goto err; 595 } 596 597 xrcd->inode = inode; 598 xrcd->device = ib_dev; 599 atomic_set(&xrcd->usecnt, 0); 600 mutex_init(&xrcd->tgt_qp_mutex); 601 INIT_LIST_HEAD(&xrcd->tgt_qp_list); 602 new_xrcd = 1; 603 } 604 605 atomic_set(&obj->refcnt, 0); 606 obj->uobject.object = xrcd; 607 memset(&resp, 0, sizeof resp); 608 resp.xrcd_handle = obj->uobject.id; 609 610 if (inode) { 611 if (new_xrcd) { 612 /* create new inode/xrcd table entry */ 613 ret = xrcd_table_insert(ibudev, inode, xrcd); 614 if (ret) 615 goto err_dealloc_xrcd; 616 } 617 atomic_inc(&xrcd->usecnt); 618 } 619 620 ret = uverbs_response(attrs, &resp, sizeof(resp)); 621 if (ret) 622 goto err_copy; 623 624 if (f.file) 625 fdput(f); 626 627 mutex_unlock(&ibudev->xrcd_tree_mutex); 628 629 return uobj_alloc_commit(&obj->uobject); 630 631 err_copy: 632 if (inode) { 633 if (new_xrcd) 634 xrcd_table_delete(ibudev, inode); 635 atomic_dec(&xrcd->usecnt); 636 } 637 638 err_dealloc_xrcd: 639 ib_dealloc_xrcd(xrcd); 640 641 err: 642 uobj_alloc_abort(&obj->uobject); 643 644 err_tree_mutex_unlock: 645 if (f.file) 646 fdput(f); 647 648 mutex_unlock(&ibudev->xrcd_tree_mutex); 649 650 return ret; 651 } 652 653 static int ib_uverbs_close_xrcd(struct uverbs_attr_bundle *attrs) 654 { 655 struct ib_uverbs_close_xrcd cmd; 656 int ret; 657 658 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 659 if (ret) 660 return ret; 661 662 return uobj_perform_destroy(UVERBS_OBJECT_XRCD, cmd.xrcd_handle, attrs); 663 } 664 665 int ib_uverbs_dealloc_xrcd(struct ib_uobject *uobject, 666 struct ib_xrcd *xrcd, 667 enum rdma_remove_reason why) 668 { 669 struct inode *inode; 670 int ret; 671 struct ib_uverbs_device *dev = uobject->context->ufile->device; 672 673 inode = xrcd->inode; 674 if (inode && !atomic_dec_and_test(&xrcd->usecnt)) 675 return 0; 676 677 ret = ib_dealloc_xrcd(xrcd); 678 679 if (ib_is_destroy_retryable(ret, why, uobject)) { 680 atomic_inc(&xrcd->usecnt); 681 return ret; 682 } 683 684 if (inode) 685 xrcd_table_delete(dev, inode); 686 687 return ret; 688 } 689 690 static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs) 691 { 692 struct ib_uverbs_reg_mr cmd; 693 struct ib_uverbs_reg_mr_resp resp; 694 struct ib_uobject *uobj; 695 struct ib_pd *pd; 696 struct ib_mr *mr; 697 int ret; 698 struct ib_device *ib_dev; 699 700 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 701 if (ret) 702 return ret; 703 704 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) 705 return -EINVAL; 706 707 ret = ib_check_mr_access(cmd.access_flags); 708 if (ret) 709 return ret; 710 711 uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev); 712 if (IS_ERR(uobj)) 713 return PTR_ERR(uobj); 714 715 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 716 if (!pd) { 717 ret = -EINVAL; 718 goto err_free; 719 } 720 721 if (cmd.access_flags & IB_ACCESS_ON_DEMAND) { 722 if (!(pd->device->attrs.device_cap_flags & 723 IB_DEVICE_ON_DEMAND_PAGING)) { 724 pr_debug("ODP support not available\n"); 725 ret = -EINVAL; 726 goto err_put; 727 } 728 } 729 730 mr = pd->device->ops.reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, 731 cmd.access_flags, 732 &attrs->driver_udata); 733 if (IS_ERR(mr)) { 734 ret = PTR_ERR(mr); 735 goto err_put; 736 } 737 738 mr->device = pd->device; 739 mr->pd = pd; 740 mr->dm = NULL; 741 mr->uobject = uobj; 742 atomic_inc(&pd->usecnt); 743 mr->res.type = RDMA_RESTRACK_MR; 744 rdma_restrack_uadd(&mr->res); 745 746 uobj->object = mr; 747 748 memset(&resp, 0, sizeof resp); 749 resp.lkey = mr->lkey; 750 resp.rkey = mr->rkey; 751 resp.mr_handle = uobj->id; 752 753 ret = uverbs_response(attrs, &resp, sizeof(resp)); 754 if (ret) 755 goto err_copy; 756 757 uobj_put_obj_read(pd); 758 759 return uobj_alloc_commit(uobj); 760 761 err_copy: 762 ib_dereg_mr(mr); 763 764 err_put: 765 uobj_put_obj_read(pd); 766 767 err_free: 768 uobj_alloc_abort(uobj); 769 return ret; 770 } 771 772 static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs) 773 { 774 struct ib_uverbs_rereg_mr cmd; 775 struct ib_uverbs_rereg_mr_resp resp; 776 struct ib_pd *pd = NULL; 777 struct ib_mr *mr; 778 struct ib_pd *old_pd; 779 int ret; 780 struct ib_uobject *uobj; 781 782 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 783 if (ret) 784 return ret; 785 786 if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags) 787 return -EINVAL; 788 789 if ((cmd.flags & IB_MR_REREG_TRANS) && 790 (!cmd.start || !cmd.hca_va || 0 >= cmd.length || 791 (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))) 792 return -EINVAL; 793 794 uobj = uobj_get_write(UVERBS_OBJECT_MR, cmd.mr_handle, attrs); 795 if (IS_ERR(uobj)) 796 return PTR_ERR(uobj); 797 798 mr = uobj->object; 799 800 if (mr->dm) { 801 ret = -EINVAL; 802 goto put_uobjs; 803 } 804 805 if (cmd.flags & IB_MR_REREG_ACCESS) { 806 ret = ib_check_mr_access(cmd.access_flags); 807 if (ret) 808 goto put_uobjs; 809 } 810 811 if (cmd.flags & IB_MR_REREG_PD) { 812 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, 813 attrs); 814 if (!pd) { 815 ret = -EINVAL; 816 goto put_uobjs; 817 } 818 } 819 820 old_pd = mr->pd; 821 ret = mr->device->ops.rereg_user_mr(mr, cmd.flags, cmd.start, 822 cmd.length, cmd.hca_va, 823 cmd.access_flags, pd, 824 &attrs->driver_udata); 825 if (!ret) { 826 if (cmd.flags & IB_MR_REREG_PD) { 827 atomic_inc(&pd->usecnt); 828 mr->pd = pd; 829 atomic_dec(&old_pd->usecnt); 830 } 831 } else { 832 goto put_uobj_pd; 833 } 834 835 memset(&resp, 0, sizeof(resp)); 836 resp.lkey = mr->lkey; 837 resp.rkey = mr->rkey; 838 839 ret = uverbs_response(attrs, &resp, sizeof(resp)); 840 841 put_uobj_pd: 842 if (cmd.flags & IB_MR_REREG_PD) 843 uobj_put_obj_read(pd); 844 845 put_uobjs: 846 uobj_put_write(uobj); 847 848 return ret; 849 } 850 851 static int ib_uverbs_dereg_mr(struct uverbs_attr_bundle *attrs) 852 { 853 struct ib_uverbs_dereg_mr cmd; 854 int ret; 855 856 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 857 if (ret) 858 return ret; 859 860 return uobj_perform_destroy(UVERBS_OBJECT_MR, cmd.mr_handle, attrs); 861 } 862 863 static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs) 864 { 865 struct ib_uverbs_alloc_mw cmd; 866 struct ib_uverbs_alloc_mw_resp resp; 867 struct ib_uobject *uobj; 868 struct ib_pd *pd; 869 struct ib_mw *mw; 870 int ret; 871 struct ib_device *ib_dev; 872 873 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 874 if (ret) 875 return ret; 876 877 uobj = uobj_alloc(UVERBS_OBJECT_MW, attrs, &ib_dev); 878 if (IS_ERR(uobj)) 879 return PTR_ERR(uobj); 880 881 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 882 if (!pd) { 883 ret = -EINVAL; 884 goto err_free; 885 } 886 887 mw = pd->device->ops.alloc_mw(pd, cmd.mw_type, &attrs->driver_udata); 888 if (IS_ERR(mw)) { 889 ret = PTR_ERR(mw); 890 goto err_put; 891 } 892 893 mw->device = pd->device; 894 mw->pd = pd; 895 mw->uobject = uobj; 896 atomic_inc(&pd->usecnt); 897 898 uobj->object = mw; 899 900 memset(&resp, 0, sizeof(resp)); 901 resp.rkey = mw->rkey; 902 resp.mw_handle = uobj->id; 903 904 ret = uverbs_response(attrs, &resp, sizeof(resp)); 905 if (ret) 906 goto err_copy; 907 908 uobj_put_obj_read(pd); 909 return uobj_alloc_commit(uobj); 910 911 err_copy: 912 uverbs_dealloc_mw(mw); 913 err_put: 914 uobj_put_obj_read(pd); 915 err_free: 916 uobj_alloc_abort(uobj); 917 return ret; 918 } 919 920 static int ib_uverbs_dealloc_mw(struct uverbs_attr_bundle *attrs) 921 { 922 struct ib_uverbs_dealloc_mw cmd; 923 int ret; 924 925 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 926 if (ret) 927 return ret; 928 929 return uobj_perform_destroy(UVERBS_OBJECT_MW, cmd.mw_handle, attrs); 930 } 931 932 static int ib_uverbs_create_comp_channel(struct uverbs_attr_bundle *attrs) 933 { 934 struct ib_uverbs_create_comp_channel cmd; 935 struct ib_uverbs_create_comp_channel_resp resp; 936 struct ib_uobject *uobj; 937 struct ib_uverbs_completion_event_file *ev_file; 938 struct ib_device *ib_dev; 939 int ret; 940 941 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 942 if (ret) 943 return ret; 944 945 uobj = uobj_alloc(UVERBS_OBJECT_COMP_CHANNEL, attrs, &ib_dev); 946 if (IS_ERR(uobj)) 947 return PTR_ERR(uobj); 948 949 resp.fd = uobj->id; 950 951 ev_file = container_of(uobj, struct ib_uverbs_completion_event_file, 952 uobj); 953 ib_uverbs_init_event_queue(&ev_file->ev_queue); 954 955 ret = uverbs_response(attrs, &resp, sizeof(resp)); 956 if (ret) { 957 uobj_alloc_abort(uobj); 958 return ret; 959 } 960 961 return uobj_alloc_commit(uobj); 962 } 963 964 static struct ib_ucq_object *create_cq(struct uverbs_attr_bundle *attrs, 965 struct ib_uverbs_ex_create_cq *cmd) 966 { 967 struct ib_ucq_object *obj; 968 struct ib_uverbs_completion_event_file *ev_file = NULL; 969 struct ib_cq *cq; 970 int ret; 971 struct ib_uverbs_ex_create_cq_resp resp; 972 struct ib_cq_init_attr attr = {}; 973 struct ib_device *ib_dev; 974 975 if (cmd->comp_vector >= attrs->ufile->device->num_comp_vectors) 976 return ERR_PTR(-EINVAL); 977 978 obj = (struct ib_ucq_object *)uobj_alloc(UVERBS_OBJECT_CQ, attrs, 979 &ib_dev); 980 if (IS_ERR(obj)) 981 return obj; 982 983 if (cmd->comp_channel >= 0) { 984 ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel, attrs); 985 if (IS_ERR(ev_file)) { 986 ret = PTR_ERR(ev_file); 987 goto err; 988 } 989 } 990 991 obj->uobject.user_handle = cmd->user_handle; 992 obj->comp_events_reported = 0; 993 obj->async_events_reported = 0; 994 INIT_LIST_HEAD(&obj->comp_list); 995 INIT_LIST_HEAD(&obj->async_list); 996 997 attr.cqe = cmd->cqe; 998 attr.comp_vector = cmd->comp_vector; 999 attr.flags = cmd->flags; 1000 1001 cq = ib_dev->ops.create_cq(ib_dev, &attr, obj->uobject.context, 1002 &attrs->driver_udata); 1003 if (IS_ERR(cq)) { 1004 ret = PTR_ERR(cq); 1005 goto err_file; 1006 } 1007 1008 cq->device = ib_dev; 1009 cq->uobject = &obj->uobject; 1010 cq->comp_handler = ib_uverbs_comp_handler; 1011 cq->event_handler = ib_uverbs_cq_event_handler; 1012 cq->cq_context = ev_file ? &ev_file->ev_queue : NULL; 1013 atomic_set(&cq->usecnt, 0); 1014 1015 obj->uobject.object = cq; 1016 memset(&resp, 0, sizeof resp); 1017 resp.base.cq_handle = obj->uobject.id; 1018 resp.base.cqe = cq->cqe; 1019 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 1020 1021 cq->res.type = RDMA_RESTRACK_CQ; 1022 rdma_restrack_uadd(&cq->res); 1023 1024 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1025 if (ret) 1026 goto err_cb; 1027 1028 ret = uobj_alloc_commit(&obj->uobject); 1029 if (ret) 1030 return ERR_PTR(ret); 1031 return obj; 1032 1033 err_cb: 1034 ib_destroy_cq(cq); 1035 1036 err_file: 1037 if (ev_file) 1038 ib_uverbs_release_ucq(attrs->ufile, ev_file, obj); 1039 1040 err: 1041 uobj_alloc_abort(&obj->uobject); 1042 1043 return ERR_PTR(ret); 1044 } 1045 1046 static int ib_uverbs_create_cq(struct uverbs_attr_bundle *attrs) 1047 { 1048 struct ib_uverbs_create_cq cmd; 1049 struct ib_uverbs_ex_create_cq cmd_ex; 1050 struct ib_ucq_object *obj; 1051 int ret; 1052 1053 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1054 if (ret) 1055 return ret; 1056 1057 memset(&cmd_ex, 0, sizeof(cmd_ex)); 1058 cmd_ex.user_handle = cmd.user_handle; 1059 cmd_ex.cqe = cmd.cqe; 1060 cmd_ex.comp_vector = cmd.comp_vector; 1061 cmd_ex.comp_channel = cmd.comp_channel; 1062 1063 obj = create_cq(attrs, &cmd_ex); 1064 return PTR_ERR_OR_ZERO(obj); 1065 } 1066 1067 static int ib_uverbs_ex_create_cq(struct uverbs_attr_bundle *attrs) 1068 { 1069 struct ib_uverbs_ex_create_cq cmd; 1070 struct ib_ucq_object *obj; 1071 int ret; 1072 1073 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1074 if (ret) 1075 return ret; 1076 1077 if (cmd.comp_mask) 1078 return -EINVAL; 1079 1080 if (cmd.reserved) 1081 return -EINVAL; 1082 1083 obj = create_cq(attrs, &cmd); 1084 return PTR_ERR_OR_ZERO(obj); 1085 } 1086 1087 static int ib_uverbs_resize_cq(struct uverbs_attr_bundle *attrs) 1088 { 1089 struct ib_uverbs_resize_cq cmd; 1090 struct ib_uverbs_resize_cq_resp resp = {}; 1091 struct ib_cq *cq; 1092 int ret = -EINVAL; 1093 1094 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1095 if (ret) 1096 return ret; 1097 1098 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1099 if (!cq) 1100 return -EINVAL; 1101 1102 ret = cq->device->ops.resize_cq(cq, cmd.cqe, &attrs->driver_udata); 1103 if (ret) 1104 goto out; 1105 1106 resp.cqe = cq->cqe; 1107 1108 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1109 out: 1110 uobj_put_obj_read(cq); 1111 1112 return ret; 1113 } 1114 1115 static int copy_wc_to_user(struct ib_device *ib_dev, void __user *dest, 1116 struct ib_wc *wc) 1117 { 1118 struct ib_uverbs_wc tmp; 1119 1120 tmp.wr_id = wc->wr_id; 1121 tmp.status = wc->status; 1122 tmp.opcode = wc->opcode; 1123 tmp.vendor_err = wc->vendor_err; 1124 tmp.byte_len = wc->byte_len; 1125 tmp.ex.imm_data = wc->ex.imm_data; 1126 tmp.qp_num = wc->qp->qp_num; 1127 tmp.src_qp = wc->src_qp; 1128 tmp.wc_flags = wc->wc_flags; 1129 tmp.pkey_index = wc->pkey_index; 1130 if (rdma_cap_opa_ah(ib_dev, wc->port_num)) 1131 tmp.slid = OPA_TO_IB_UCAST_LID(wc->slid); 1132 else 1133 tmp.slid = ib_lid_cpu16(wc->slid); 1134 tmp.sl = wc->sl; 1135 tmp.dlid_path_bits = wc->dlid_path_bits; 1136 tmp.port_num = wc->port_num; 1137 tmp.reserved = 0; 1138 1139 if (copy_to_user(dest, &tmp, sizeof tmp)) 1140 return -EFAULT; 1141 1142 return 0; 1143 } 1144 1145 static int ib_uverbs_poll_cq(struct uverbs_attr_bundle *attrs) 1146 { 1147 struct ib_uverbs_poll_cq cmd; 1148 struct ib_uverbs_poll_cq_resp resp; 1149 u8 __user *header_ptr; 1150 u8 __user *data_ptr; 1151 struct ib_cq *cq; 1152 struct ib_wc wc; 1153 int ret; 1154 1155 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1156 if (ret) 1157 return ret; 1158 1159 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1160 if (!cq) 1161 return -EINVAL; 1162 1163 /* we copy a struct ib_uverbs_poll_cq_resp to user space */ 1164 header_ptr = attrs->ucore.outbuf; 1165 data_ptr = header_ptr + sizeof resp; 1166 1167 memset(&resp, 0, sizeof resp); 1168 while (resp.count < cmd.ne) { 1169 ret = ib_poll_cq(cq, 1, &wc); 1170 if (ret < 0) 1171 goto out_put; 1172 if (!ret) 1173 break; 1174 1175 ret = copy_wc_to_user(cq->device, data_ptr, &wc); 1176 if (ret) 1177 goto out_put; 1178 1179 data_ptr += sizeof(struct ib_uverbs_wc); 1180 ++resp.count; 1181 } 1182 1183 if (copy_to_user(header_ptr, &resp, sizeof resp)) { 1184 ret = -EFAULT; 1185 goto out_put; 1186 } 1187 1188 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT)) 1189 ret = uverbs_output_written(attrs, UVERBS_ATTR_CORE_OUT); 1190 1191 ret = 0; 1192 1193 out_put: 1194 uobj_put_obj_read(cq); 1195 return ret; 1196 } 1197 1198 static int ib_uverbs_req_notify_cq(struct uverbs_attr_bundle *attrs) 1199 { 1200 struct ib_uverbs_req_notify_cq cmd; 1201 struct ib_cq *cq; 1202 int ret; 1203 1204 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1205 if (ret) 1206 return ret; 1207 1208 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1209 if (!cq) 1210 return -EINVAL; 1211 1212 ib_req_notify_cq(cq, cmd.solicited_only ? 1213 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); 1214 1215 uobj_put_obj_read(cq); 1216 1217 return 0; 1218 } 1219 1220 static int ib_uverbs_destroy_cq(struct uverbs_attr_bundle *attrs) 1221 { 1222 struct ib_uverbs_destroy_cq cmd; 1223 struct ib_uverbs_destroy_cq_resp resp; 1224 struct ib_uobject *uobj; 1225 struct ib_ucq_object *obj; 1226 int ret; 1227 1228 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1229 if (ret) 1230 return ret; 1231 1232 uobj = uobj_get_destroy(UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1233 if (IS_ERR(uobj)) 1234 return PTR_ERR(uobj); 1235 1236 obj = container_of(uobj, struct ib_ucq_object, uobject); 1237 memset(&resp, 0, sizeof(resp)); 1238 resp.comp_events_reported = obj->comp_events_reported; 1239 resp.async_events_reported = obj->async_events_reported; 1240 1241 uobj_put_destroy(uobj); 1242 1243 return uverbs_response(attrs, &resp, sizeof(resp)); 1244 } 1245 1246 static int create_qp(struct uverbs_attr_bundle *attrs, 1247 struct ib_uverbs_ex_create_qp *cmd) 1248 { 1249 struct ib_uqp_object *obj; 1250 struct ib_device *device; 1251 struct ib_pd *pd = NULL; 1252 struct ib_xrcd *xrcd = NULL; 1253 struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT); 1254 struct ib_cq *scq = NULL, *rcq = NULL; 1255 struct ib_srq *srq = NULL; 1256 struct ib_qp *qp; 1257 struct ib_qp_init_attr attr = {}; 1258 struct ib_uverbs_ex_create_qp_resp resp; 1259 int ret; 1260 struct ib_rwq_ind_table *ind_tbl = NULL; 1261 bool has_sq = true; 1262 struct ib_device *ib_dev; 1263 1264 if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW)) 1265 return -EPERM; 1266 1267 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs, 1268 &ib_dev); 1269 if (IS_ERR(obj)) 1270 return PTR_ERR(obj); 1271 obj->uxrcd = NULL; 1272 obj->uevent.uobject.user_handle = cmd->user_handle; 1273 mutex_init(&obj->mcast_lock); 1274 1275 if (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE) { 1276 ind_tbl = uobj_get_obj_read(rwq_ind_table, 1277 UVERBS_OBJECT_RWQ_IND_TBL, 1278 cmd->rwq_ind_tbl_handle, attrs); 1279 if (!ind_tbl) { 1280 ret = -EINVAL; 1281 goto err_put; 1282 } 1283 1284 attr.rwq_ind_tbl = ind_tbl; 1285 } 1286 1287 if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) { 1288 ret = -EINVAL; 1289 goto err_put; 1290 } 1291 1292 if (ind_tbl && !cmd->max_send_wr) 1293 has_sq = false; 1294 1295 if (cmd->qp_type == IB_QPT_XRC_TGT) { 1296 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->pd_handle, 1297 attrs); 1298 1299 if (IS_ERR(xrcd_uobj)) { 1300 ret = -EINVAL; 1301 goto err_put; 1302 } 1303 1304 xrcd = (struct ib_xrcd *)xrcd_uobj->object; 1305 if (!xrcd) { 1306 ret = -EINVAL; 1307 goto err_put; 1308 } 1309 device = xrcd->device; 1310 } else { 1311 if (cmd->qp_type == IB_QPT_XRC_INI) { 1312 cmd->max_recv_wr = 0; 1313 cmd->max_recv_sge = 0; 1314 } else { 1315 if (cmd->is_srq) { 1316 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, 1317 cmd->srq_handle, attrs); 1318 if (!srq || srq->srq_type == IB_SRQT_XRC) { 1319 ret = -EINVAL; 1320 goto err_put; 1321 } 1322 } 1323 1324 if (!ind_tbl) { 1325 if (cmd->recv_cq_handle != cmd->send_cq_handle) { 1326 rcq = uobj_get_obj_read( 1327 cq, UVERBS_OBJECT_CQ, 1328 cmd->recv_cq_handle, attrs); 1329 if (!rcq) { 1330 ret = -EINVAL; 1331 goto err_put; 1332 } 1333 } 1334 } 1335 } 1336 1337 if (has_sq) 1338 scq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, 1339 cmd->send_cq_handle, attrs); 1340 if (!ind_tbl) 1341 rcq = rcq ?: scq; 1342 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, 1343 attrs); 1344 if (!pd || (!scq && has_sq)) { 1345 ret = -EINVAL; 1346 goto err_put; 1347 } 1348 1349 device = pd->device; 1350 } 1351 1352 attr.event_handler = ib_uverbs_qp_event_handler; 1353 attr.qp_context = attrs->ufile; 1354 attr.send_cq = scq; 1355 attr.recv_cq = rcq; 1356 attr.srq = srq; 1357 attr.xrcd = xrcd; 1358 attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR : 1359 IB_SIGNAL_REQ_WR; 1360 attr.qp_type = cmd->qp_type; 1361 attr.create_flags = 0; 1362 1363 attr.cap.max_send_wr = cmd->max_send_wr; 1364 attr.cap.max_recv_wr = cmd->max_recv_wr; 1365 attr.cap.max_send_sge = cmd->max_send_sge; 1366 attr.cap.max_recv_sge = cmd->max_recv_sge; 1367 attr.cap.max_inline_data = cmd->max_inline_data; 1368 1369 obj->uevent.events_reported = 0; 1370 INIT_LIST_HEAD(&obj->uevent.event_list); 1371 INIT_LIST_HEAD(&obj->mcast_list); 1372 1373 attr.create_flags = cmd->create_flags; 1374 if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK | 1375 IB_QP_CREATE_CROSS_CHANNEL | 1376 IB_QP_CREATE_MANAGED_SEND | 1377 IB_QP_CREATE_MANAGED_RECV | 1378 IB_QP_CREATE_SCATTER_FCS | 1379 IB_QP_CREATE_CVLAN_STRIPPING | 1380 IB_QP_CREATE_SOURCE_QPN | 1381 IB_QP_CREATE_PCI_WRITE_END_PADDING)) { 1382 ret = -EINVAL; 1383 goto err_put; 1384 } 1385 1386 if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) { 1387 if (!capable(CAP_NET_RAW)) { 1388 ret = -EPERM; 1389 goto err_put; 1390 } 1391 1392 attr.source_qpn = cmd->source_qpn; 1393 } 1394 1395 if (cmd->qp_type == IB_QPT_XRC_TGT) 1396 qp = ib_create_qp(pd, &attr); 1397 else 1398 qp = _ib_create_qp(device, pd, &attr, &attrs->driver_udata, 1399 &obj->uevent.uobject); 1400 1401 if (IS_ERR(qp)) { 1402 ret = PTR_ERR(qp); 1403 goto err_put; 1404 } 1405 1406 if (cmd->qp_type != IB_QPT_XRC_TGT) { 1407 ret = ib_create_qp_security(qp, device); 1408 if (ret) 1409 goto err_cb; 1410 1411 qp->real_qp = qp; 1412 qp->pd = pd; 1413 qp->send_cq = attr.send_cq; 1414 qp->recv_cq = attr.recv_cq; 1415 qp->srq = attr.srq; 1416 qp->rwq_ind_tbl = ind_tbl; 1417 qp->event_handler = attr.event_handler; 1418 qp->qp_context = attr.qp_context; 1419 qp->qp_type = attr.qp_type; 1420 atomic_set(&qp->usecnt, 0); 1421 atomic_inc(&pd->usecnt); 1422 qp->port = 0; 1423 if (attr.send_cq) 1424 atomic_inc(&attr.send_cq->usecnt); 1425 if (attr.recv_cq) 1426 atomic_inc(&attr.recv_cq->usecnt); 1427 if (attr.srq) 1428 atomic_inc(&attr.srq->usecnt); 1429 if (ind_tbl) 1430 atomic_inc(&ind_tbl->usecnt); 1431 } else { 1432 /* It is done in _ib_create_qp for other QP types */ 1433 qp->uobject = &obj->uevent.uobject; 1434 } 1435 1436 obj->uevent.uobject.object = qp; 1437 1438 memset(&resp, 0, sizeof resp); 1439 resp.base.qpn = qp->qp_num; 1440 resp.base.qp_handle = obj->uevent.uobject.id; 1441 resp.base.max_recv_sge = attr.cap.max_recv_sge; 1442 resp.base.max_send_sge = attr.cap.max_send_sge; 1443 resp.base.max_recv_wr = attr.cap.max_recv_wr; 1444 resp.base.max_send_wr = attr.cap.max_send_wr; 1445 resp.base.max_inline_data = attr.cap.max_inline_data; 1446 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 1447 1448 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1449 if (ret) 1450 goto err_cb; 1451 1452 if (xrcd) { 1453 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, 1454 uobject); 1455 atomic_inc(&obj->uxrcd->refcnt); 1456 uobj_put_read(xrcd_uobj); 1457 } 1458 1459 if (pd) 1460 uobj_put_obj_read(pd); 1461 if (scq) 1462 uobj_put_obj_read(scq); 1463 if (rcq && rcq != scq) 1464 uobj_put_obj_read(rcq); 1465 if (srq) 1466 uobj_put_obj_read(srq); 1467 if (ind_tbl) 1468 uobj_put_obj_read(ind_tbl); 1469 1470 return uobj_alloc_commit(&obj->uevent.uobject); 1471 err_cb: 1472 ib_destroy_qp(qp); 1473 1474 err_put: 1475 if (!IS_ERR(xrcd_uobj)) 1476 uobj_put_read(xrcd_uobj); 1477 if (pd) 1478 uobj_put_obj_read(pd); 1479 if (scq) 1480 uobj_put_obj_read(scq); 1481 if (rcq && rcq != scq) 1482 uobj_put_obj_read(rcq); 1483 if (srq) 1484 uobj_put_obj_read(srq); 1485 if (ind_tbl) 1486 uobj_put_obj_read(ind_tbl); 1487 1488 uobj_alloc_abort(&obj->uevent.uobject); 1489 return ret; 1490 } 1491 1492 static int ib_uverbs_create_qp(struct uverbs_attr_bundle *attrs) 1493 { 1494 struct ib_uverbs_create_qp cmd; 1495 struct ib_uverbs_ex_create_qp cmd_ex; 1496 int ret; 1497 1498 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1499 if (ret) 1500 return ret; 1501 1502 memset(&cmd_ex, 0, sizeof(cmd_ex)); 1503 cmd_ex.user_handle = cmd.user_handle; 1504 cmd_ex.pd_handle = cmd.pd_handle; 1505 cmd_ex.send_cq_handle = cmd.send_cq_handle; 1506 cmd_ex.recv_cq_handle = cmd.recv_cq_handle; 1507 cmd_ex.srq_handle = cmd.srq_handle; 1508 cmd_ex.max_send_wr = cmd.max_send_wr; 1509 cmd_ex.max_recv_wr = cmd.max_recv_wr; 1510 cmd_ex.max_send_sge = cmd.max_send_sge; 1511 cmd_ex.max_recv_sge = cmd.max_recv_sge; 1512 cmd_ex.max_inline_data = cmd.max_inline_data; 1513 cmd_ex.sq_sig_all = cmd.sq_sig_all; 1514 cmd_ex.qp_type = cmd.qp_type; 1515 cmd_ex.is_srq = cmd.is_srq; 1516 1517 return create_qp(attrs, &cmd_ex); 1518 } 1519 1520 static int ib_uverbs_ex_create_qp(struct uverbs_attr_bundle *attrs) 1521 { 1522 struct ib_uverbs_ex_create_qp cmd; 1523 int ret; 1524 1525 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1526 if (ret) 1527 return ret; 1528 1529 if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK) 1530 return -EINVAL; 1531 1532 if (cmd.reserved) 1533 return -EINVAL; 1534 1535 return create_qp(attrs, &cmd); 1536 } 1537 1538 static int ib_uverbs_open_qp(struct uverbs_attr_bundle *attrs) 1539 { 1540 struct ib_uverbs_open_qp cmd; 1541 struct ib_uverbs_create_qp_resp resp; 1542 struct ib_uqp_object *obj; 1543 struct ib_xrcd *xrcd; 1544 struct ib_uobject *uninitialized_var(xrcd_uobj); 1545 struct ib_qp *qp; 1546 struct ib_qp_open_attr attr; 1547 int ret; 1548 struct ib_device *ib_dev; 1549 1550 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1551 if (ret) 1552 return ret; 1553 1554 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs, 1555 &ib_dev); 1556 if (IS_ERR(obj)) 1557 return PTR_ERR(obj); 1558 1559 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd.pd_handle, attrs); 1560 if (IS_ERR(xrcd_uobj)) { 1561 ret = -EINVAL; 1562 goto err_put; 1563 } 1564 1565 xrcd = (struct ib_xrcd *)xrcd_uobj->object; 1566 if (!xrcd) { 1567 ret = -EINVAL; 1568 goto err_xrcd; 1569 } 1570 1571 attr.event_handler = ib_uverbs_qp_event_handler; 1572 attr.qp_context = attrs->ufile; 1573 attr.qp_num = cmd.qpn; 1574 attr.qp_type = cmd.qp_type; 1575 1576 obj->uevent.events_reported = 0; 1577 INIT_LIST_HEAD(&obj->uevent.event_list); 1578 INIT_LIST_HEAD(&obj->mcast_list); 1579 1580 qp = ib_open_qp(xrcd, &attr); 1581 if (IS_ERR(qp)) { 1582 ret = PTR_ERR(qp); 1583 goto err_xrcd; 1584 } 1585 1586 obj->uevent.uobject.object = qp; 1587 obj->uevent.uobject.user_handle = cmd.user_handle; 1588 1589 memset(&resp, 0, sizeof resp); 1590 resp.qpn = qp->qp_num; 1591 resp.qp_handle = obj->uevent.uobject.id; 1592 1593 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1594 if (ret) 1595 goto err_destroy; 1596 1597 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); 1598 atomic_inc(&obj->uxrcd->refcnt); 1599 qp->uobject = &obj->uevent.uobject; 1600 uobj_put_read(xrcd_uobj); 1601 1602 return uobj_alloc_commit(&obj->uevent.uobject); 1603 1604 err_destroy: 1605 ib_destroy_qp(qp); 1606 err_xrcd: 1607 uobj_put_read(xrcd_uobj); 1608 err_put: 1609 uobj_alloc_abort(&obj->uevent.uobject); 1610 return ret; 1611 } 1612 1613 static void copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest *uverb_attr, 1614 struct rdma_ah_attr *rdma_attr) 1615 { 1616 const struct ib_global_route *grh; 1617 1618 uverb_attr->dlid = rdma_ah_get_dlid(rdma_attr); 1619 uverb_attr->sl = rdma_ah_get_sl(rdma_attr); 1620 uverb_attr->src_path_bits = rdma_ah_get_path_bits(rdma_attr); 1621 uverb_attr->static_rate = rdma_ah_get_static_rate(rdma_attr); 1622 uverb_attr->is_global = !!(rdma_ah_get_ah_flags(rdma_attr) & 1623 IB_AH_GRH); 1624 if (uverb_attr->is_global) { 1625 grh = rdma_ah_read_grh(rdma_attr); 1626 memcpy(uverb_attr->dgid, grh->dgid.raw, 16); 1627 uverb_attr->flow_label = grh->flow_label; 1628 uverb_attr->sgid_index = grh->sgid_index; 1629 uverb_attr->hop_limit = grh->hop_limit; 1630 uverb_attr->traffic_class = grh->traffic_class; 1631 } 1632 uverb_attr->port_num = rdma_ah_get_port_num(rdma_attr); 1633 } 1634 1635 static int ib_uverbs_query_qp(struct uverbs_attr_bundle *attrs) 1636 { 1637 struct ib_uverbs_query_qp cmd; 1638 struct ib_uverbs_query_qp_resp resp; 1639 struct ib_qp *qp; 1640 struct ib_qp_attr *attr; 1641 struct ib_qp_init_attr *init_attr; 1642 int ret; 1643 1644 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1645 if (ret) 1646 return ret; 1647 1648 attr = kmalloc(sizeof *attr, GFP_KERNEL); 1649 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); 1650 if (!attr || !init_attr) { 1651 ret = -ENOMEM; 1652 goto out; 1653 } 1654 1655 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 1656 if (!qp) { 1657 ret = -EINVAL; 1658 goto out; 1659 } 1660 1661 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); 1662 1663 uobj_put_obj_read(qp); 1664 1665 if (ret) 1666 goto out; 1667 1668 memset(&resp, 0, sizeof resp); 1669 1670 resp.qp_state = attr->qp_state; 1671 resp.cur_qp_state = attr->cur_qp_state; 1672 resp.path_mtu = attr->path_mtu; 1673 resp.path_mig_state = attr->path_mig_state; 1674 resp.qkey = attr->qkey; 1675 resp.rq_psn = attr->rq_psn; 1676 resp.sq_psn = attr->sq_psn; 1677 resp.dest_qp_num = attr->dest_qp_num; 1678 resp.qp_access_flags = attr->qp_access_flags; 1679 resp.pkey_index = attr->pkey_index; 1680 resp.alt_pkey_index = attr->alt_pkey_index; 1681 resp.sq_draining = attr->sq_draining; 1682 resp.max_rd_atomic = attr->max_rd_atomic; 1683 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; 1684 resp.min_rnr_timer = attr->min_rnr_timer; 1685 resp.port_num = attr->port_num; 1686 resp.timeout = attr->timeout; 1687 resp.retry_cnt = attr->retry_cnt; 1688 resp.rnr_retry = attr->rnr_retry; 1689 resp.alt_port_num = attr->alt_port_num; 1690 resp.alt_timeout = attr->alt_timeout; 1691 1692 copy_ah_attr_to_uverbs(&resp.dest, &attr->ah_attr); 1693 copy_ah_attr_to_uverbs(&resp.alt_dest, &attr->alt_ah_attr); 1694 1695 resp.max_send_wr = init_attr->cap.max_send_wr; 1696 resp.max_recv_wr = init_attr->cap.max_recv_wr; 1697 resp.max_send_sge = init_attr->cap.max_send_sge; 1698 resp.max_recv_sge = init_attr->cap.max_recv_sge; 1699 resp.max_inline_data = init_attr->cap.max_inline_data; 1700 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; 1701 1702 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1703 1704 out: 1705 kfree(attr); 1706 kfree(init_attr); 1707 1708 return ret; 1709 } 1710 1711 /* Remove ignored fields set in the attribute mask */ 1712 static int modify_qp_mask(enum ib_qp_type qp_type, int mask) 1713 { 1714 switch (qp_type) { 1715 case IB_QPT_XRC_INI: 1716 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER); 1717 case IB_QPT_XRC_TGT: 1718 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT | 1719 IB_QP_RNR_RETRY); 1720 default: 1721 return mask; 1722 } 1723 } 1724 1725 static void copy_ah_attr_from_uverbs(struct ib_device *dev, 1726 struct rdma_ah_attr *rdma_attr, 1727 struct ib_uverbs_qp_dest *uverb_attr) 1728 { 1729 rdma_attr->type = rdma_ah_find_type(dev, uverb_attr->port_num); 1730 if (uverb_attr->is_global) { 1731 rdma_ah_set_grh(rdma_attr, NULL, 1732 uverb_attr->flow_label, 1733 uverb_attr->sgid_index, 1734 uverb_attr->hop_limit, 1735 uverb_attr->traffic_class); 1736 rdma_ah_set_dgid_raw(rdma_attr, uverb_attr->dgid); 1737 } else { 1738 rdma_ah_set_ah_flags(rdma_attr, 0); 1739 } 1740 rdma_ah_set_dlid(rdma_attr, uverb_attr->dlid); 1741 rdma_ah_set_sl(rdma_attr, uverb_attr->sl); 1742 rdma_ah_set_path_bits(rdma_attr, uverb_attr->src_path_bits); 1743 rdma_ah_set_static_rate(rdma_attr, uverb_attr->static_rate); 1744 rdma_ah_set_port_num(rdma_attr, uverb_attr->port_num); 1745 rdma_ah_set_make_grd(rdma_attr, false); 1746 } 1747 1748 static int modify_qp(struct uverbs_attr_bundle *attrs, 1749 struct ib_uverbs_ex_modify_qp *cmd) 1750 { 1751 struct ib_qp_attr *attr; 1752 struct ib_qp *qp; 1753 int ret; 1754 1755 attr = kzalloc(sizeof(*attr), GFP_KERNEL); 1756 if (!attr) 1757 return -ENOMEM; 1758 1759 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd->base.qp_handle, 1760 attrs); 1761 if (!qp) { 1762 ret = -EINVAL; 1763 goto out; 1764 } 1765 1766 if ((cmd->base.attr_mask & IB_QP_PORT) && 1767 !rdma_is_port_valid(qp->device, cmd->base.port_num)) { 1768 ret = -EINVAL; 1769 goto release_qp; 1770 } 1771 1772 if ((cmd->base.attr_mask & IB_QP_AV)) { 1773 if (!rdma_is_port_valid(qp->device, cmd->base.dest.port_num)) { 1774 ret = -EINVAL; 1775 goto release_qp; 1776 } 1777 1778 if (cmd->base.attr_mask & IB_QP_STATE && 1779 cmd->base.qp_state == IB_QPS_RTR) { 1780 /* We are in INIT->RTR TRANSITION (if we are not, 1781 * this transition will be rejected in subsequent checks). 1782 * In the INIT->RTR transition, we cannot have IB_QP_PORT set, 1783 * but the IB_QP_STATE flag is required. 1784 * 1785 * Since kernel 3.14 (commit dbf727de7440), the uverbs driver, 1786 * when IB_QP_AV is set, has required inclusion of a valid 1787 * port number in the primary AV. (AVs are created and handled 1788 * differently for infiniband and ethernet (RoCE) ports). 1789 * 1790 * Check the port number included in the primary AV against 1791 * the port number in the qp struct, which was set (and saved) 1792 * in the RST->INIT transition. 1793 */ 1794 if (cmd->base.dest.port_num != qp->real_qp->port) { 1795 ret = -EINVAL; 1796 goto release_qp; 1797 } 1798 } else { 1799 /* We are in SQD->SQD. (If we are not, this transition will 1800 * be rejected later in the verbs layer checks). 1801 * Check for both IB_QP_PORT and IB_QP_AV, these can be set 1802 * together in the SQD->SQD transition. 1803 * 1804 * If only IP_QP_AV was set, add in IB_QP_PORT as well (the 1805 * verbs layer driver does not track primary port changes 1806 * resulting from path migration. Thus, in SQD, if the primary 1807 * AV is modified, the primary port should also be modified). 1808 * 1809 * Note that in this transition, the IB_QP_STATE flag 1810 * is not allowed. 1811 */ 1812 if (((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT)) 1813 == (IB_QP_AV | IB_QP_PORT)) && 1814 cmd->base.port_num != cmd->base.dest.port_num) { 1815 ret = -EINVAL; 1816 goto release_qp; 1817 } 1818 if ((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT)) 1819 == IB_QP_AV) { 1820 cmd->base.attr_mask |= IB_QP_PORT; 1821 cmd->base.port_num = cmd->base.dest.port_num; 1822 } 1823 } 1824 } 1825 1826 if ((cmd->base.attr_mask & IB_QP_ALT_PATH) && 1827 (!rdma_is_port_valid(qp->device, cmd->base.alt_port_num) || 1828 !rdma_is_port_valid(qp->device, cmd->base.alt_dest.port_num) || 1829 cmd->base.alt_port_num != cmd->base.alt_dest.port_num)) { 1830 ret = -EINVAL; 1831 goto release_qp; 1832 } 1833 1834 if ((cmd->base.attr_mask & IB_QP_CUR_STATE && 1835 cmd->base.cur_qp_state > IB_QPS_ERR) || 1836 (cmd->base.attr_mask & IB_QP_STATE && 1837 cmd->base.qp_state > IB_QPS_ERR)) { 1838 ret = -EINVAL; 1839 goto release_qp; 1840 } 1841 1842 if (cmd->base.attr_mask & IB_QP_STATE) 1843 attr->qp_state = cmd->base.qp_state; 1844 if (cmd->base.attr_mask & IB_QP_CUR_STATE) 1845 attr->cur_qp_state = cmd->base.cur_qp_state; 1846 if (cmd->base.attr_mask & IB_QP_PATH_MTU) 1847 attr->path_mtu = cmd->base.path_mtu; 1848 if (cmd->base.attr_mask & IB_QP_PATH_MIG_STATE) 1849 attr->path_mig_state = cmd->base.path_mig_state; 1850 if (cmd->base.attr_mask & IB_QP_QKEY) 1851 attr->qkey = cmd->base.qkey; 1852 if (cmd->base.attr_mask & IB_QP_RQ_PSN) 1853 attr->rq_psn = cmd->base.rq_psn; 1854 if (cmd->base.attr_mask & IB_QP_SQ_PSN) 1855 attr->sq_psn = cmd->base.sq_psn; 1856 if (cmd->base.attr_mask & IB_QP_DEST_QPN) 1857 attr->dest_qp_num = cmd->base.dest_qp_num; 1858 if (cmd->base.attr_mask & IB_QP_ACCESS_FLAGS) 1859 attr->qp_access_flags = cmd->base.qp_access_flags; 1860 if (cmd->base.attr_mask & IB_QP_PKEY_INDEX) 1861 attr->pkey_index = cmd->base.pkey_index; 1862 if (cmd->base.attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) 1863 attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify; 1864 if (cmd->base.attr_mask & IB_QP_MAX_QP_RD_ATOMIC) 1865 attr->max_rd_atomic = cmd->base.max_rd_atomic; 1866 if (cmd->base.attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) 1867 attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic; 1868 if (cmd->base.attr_mask & IB_QP_MIN_RNR_TIMER) 1869 attr->min_rnr_timer = cmd->base.min_rnr_timer; 1870 if (cmd->base.attr_mask & IB_QP_PORT) 1871 attr->port_num = cmd->base.port_num; 1872 if (cmd->base.attr_mask & IB_QP_TIMEOUT) 1873 attr->timeout = cmd->base.timeout; 1874 if (cmd->base.attr_mask & IB_QP_RETRY_CNT) 1875 attr->retry_cnt = cmd->base.retry_cnt; 1876 if (cmd->base.attr_mask & IB_QP_RNR_RETRY) 1877 attr->rnr_retry = cmd->base.rnr_retry; 1878 if (cmd->base.attr_mask & IB_QP_ALT_PATH) { 1879 attr->alt_port_num = cmd->base.alt_port_num; 1880 attr->alt_timeout = cmd->base.alt_timeout; 1881 attr->alt_pkey_index = cmd->base.alt_pkey_index; 1882 } 1883 if (cmd->base.attr_mask & IB_QP_RATE_LIMIT) 1884 attr->rate_limit = cmd->rate_limit; 1885 1886 if (cmd->base.attr_mask & IB_QP_AV) 1887 copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr, 1888 &cmd->base.dest); 1889 1890 if (cmd->base.attr_mask & IB_QP_ALT_PATH) 1891 copy_ah_attr_from_uverbs(qp->device, &attr->alt_ah_attr, 1892 &cmd->base.alt_dest); 1893 1894 ret = ib_modify_qp_with_udata(qp, attr, 1895 modify_qp_mask(qp->qp_type, 1896 cmd->base.attr_mask), 1897 &attrs->driver_udata); 1898 1899 release_qp: 1900 uobj_put_obj_read(qp); 1901 out: 1902 kfree(attr); 1903 1904 return ret; 1905 } 1906 1907 static int ib_uverbs_modify_qp(struct uverbs_attr_bundle *attrs) 1908 { 1909 struct ib_uverbs_ex_modify_qp cmd; 1910 int ret; 1911 1912 ret = uverbs_request(attrs, &cmd.base, sizeof(cmd.base)); 1913 if (ret) 1914 return ret; 1915 1916 if (cmd.base.attr_mask & 1917 ~((IB_USER_LEGACY_LAST_QP_ATTR_MASK << 1) - 1)) 1918 return -EOPNOTSUPP; 1919 1920 return modify_qp(attrs, &cmd); 1921 } 1922 1923 static int ib_uverbs_ex_modify_qp(struct uverbs_attr_bundle *attrs) 1924 { 1925 struct ib_uverbs_ex_modify_qp cmd; 1926 struct ib_uverbs_ex_modify_qp_resp resp = { 1927 .response_length = uverbs_response_length(attrs, sizeof(resp)) 1928 }; 1929 int ret; 1930 1931 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1932 if (ret) 1933 return ret; 1934 1935 /* 1936 * Last bit is reserved for extending the attr_mask by 1937 * using another field. 1938 */ 1939 BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1 << 31)); 1940 1941 if (cmd.base.attr_mask & 1942 ~((IB_USER_LAST_QP_ATTR_MASK << 1) - 1)) 1943 return -EOPNOTSUPP; 1944 1945 ret = modify_qp(attrs, &cmd); 1946 if (ret) 1947 return ret; 1948 1949 return uverbs_response(attrs, &resp, sizeof(resp)); 1950 } 1951 1952 static int ib_uverbs_destroy_qp(struct uverbs_attr_bundle *attrs) 1953 { 1954 struct ib_uverbs_destroy_qp cmd; 1955 struct ib_uverbs_destroy_qp_resp resp; 1956 struct ib_uobject *uobj; 1957 struct ib_uqp_object *obj; 1958 int ret; 1959 1960 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1961 if (ret) 1962 return ret; 1963 1964 uobj = uobj_get_destroy(UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 1965 if (IS_ERR(uobj)) 1966 return PTR_ERR(uobj); 1967 1968 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); 1969 memset(&resp, 0, sizeof(resp)); 1970 resp.events_reported = obj->uevent.events_reported; 1971 1972 uobj_put_destroy(uobj); 1973 1974 return uverbs_response(attrs, &resp, sizeof(resp)); 1975 } 1976 1977 static void *alloc_wr(size_t wr_size, __u32 num_sge) 1978 { 1979 if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof (struct ib_sge))) / 1980 sizeof (struct ib_sge)) 1981 return NULL; 1982 1983 return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) + 1984 num_sge * sizeof (struct ib_sge), GFP_KERNEL); 1985 } 1986 1987 static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs) 1988 { 1989 struct ib_uverbs_post_send cmd; 1990 struct ib_uverbs_post_send_resp resp; 1991 struct ib_uverbs_send_wr *user_wr; 1992 struct ib_send_wr *wr = NULL, *last, *next; 1993 const struct ib_send_wr *bad_wr; 1994 struct ib_qp *qp; 1995 int i, sg_ind; 1996 int is_ud; 1997 int ret, ret2; 1998 size_t next_size; 1999 const struct ib_sge __user *sgls; 2000 const void __user *wqes; 2001 struct uverbs_req_iter iter; 2002 2003 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 2004 if (ret) 2005 return ret; 2006 wqes = uverbs_request_next_ptr(&iter, cmd.wqe_size * cmd.wr_count); 2007 if (IS_ERR(wqes)) 2008 return PTR_ERR(wqes); 2009 sgls = uverbs_request_next_ptr( 2010 &iter, cmd.sge_count * sizeof(struct ib_uverbs_sge)); 2011 if (IS_ERR(sgls)) 2012 return PTR_ERR(sgls); 2013 ret = uverbs_request_finish(&iter); 2014 if (ret) 2015 return ret; 2016 2017 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); 2018 if (!user_wr) 2019 return -ENOMEM; 2020 2021 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2022 if (!qp) { 2023 ret = -EINVAL; 2024 goto out; 2025 } 2026 2027 is_ud = qp->qp_type == IB_QPT_UD; 2028 sg_ind = 0; 2029 last = NULL; 2030 for (i = 0; i < cmd.wr_count; ++i) { 2031 if (copy_from_user(user_wr, wqes + i * cmd.wqe_size, 2032 cmd.wqe_size)) { 2033 ret = -EFAULT; 2034 goto out_put; 2035 } 2036 2037 if (user_wr->num_sge + sg_ind > cmd.sge_count) { 2038 ret = -EINVAL; 2039 goto out_put; 2040 } 2041 2042 if (is_ud) { 2043 struct ib_ud_wr *ud; 2044 2045 if (user_wr->opcode != IB_WR_SEND && 2046 user_wr->opcode != IB_WR_SEND_WITH_IMM) { 2047 ret = -EINVAL; 2048 goto out_put; 2049 } 2050 2051 next_size = sizeof(*ud); 2052 ud = alloc_wr(next_size, user_wr->num_sge); 2053 if (!ud) { 2054 ret = -ENOMEM; 2055 goto out_put; 2056 } 2057 2058 ud->ah = uobj_get_obj_read(ah, UVERBS_OBJECT_AH, 2059 user_wr->wr.ud.ah, attrs); 2060 if (!ud->ah) { 2061 kfree(ud); 2062 ret = -EINVAL; 2063 goto out_put; 2064 } 2065 ud->remote_qpn = user_wr->wr.ud.remote_qpn; 2066 ud->remote_qkey = user_wr->wr.ud.remote_qkey; 2067 2068 next = &ud->wr; 2069 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM || 2070 user_wr->opcode == IB_WR_RDMA_WRITE || 2071 user_wr->opcode == IB_WR_RDMA_READ) { 2072 struct ib_rdma_wr *rdma; 2073 2074 next_size = sizeof(*rdma); 2075 rdma = alloc_wr(next_size, user_wr->num_sge); 2076 if (!rdma) { 2077 ret = -ENOMEM; 2078 goto out_put; 2079 } 2080 2081 rdma->remote_addr = user_wr->wr.rdma.remote_addr; 2082 rdma->rkey = user_wr->wr.rdma.rkey; 2083 2084 next = &rdma->wr; 2085 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP || 2086 user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) { 2087 struct ib_atomic_wr *atomic; 2088 2089 next_size = sizeof(*atomic); 2090 atomic = alloc_wr(next_size, user_wr->num_sge); 2091 if (!atomic) { 2092 ret = -ENOMEM; 2093 goto out_put; 2094 } 2095 2096 atomic->remote_addr = user_wr->wr.atomic.remote_addr; 2097 atomic->compare_add = user_wr->wr.atomic.compare_add; 2098 atomic->swap = user_wr->wr.atomic.swap; 2099 atomic->rkey = user_wr->wr.atomic.rkey; 2100 2101 next = &atomic->wr; 2102 } else if (user_wr->opcode == IB_WR_SEND || 2103 user_wr->opcode == IB_WR_SEND_WITH_IMM || 2104 user_wr->opcode == IB_WR_SEND_WITH_INV) { 2105 next_size = sizeof(*next); 2106 next = alloc_wr(next_size, user_wr->num_sge); 2107 if (!next) { 2108 ret = -ENOMEM; 2109 goto out_put; 2110 } 2111 } else { 2112 ret = -EINVAL; 2113 goto out_put; 2114 } 2115 2116 if (user_wr->opcode == IB_WR_SEND_WITH_IMM || 2117 user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) { 2118 next->ex.imm_data = 2119 (__be32 __force) user_wr->ex.imm_data; 2120 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) { 2121 next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey; 2122 } 2123 2124 if (!last) 2125 wr = next; 2126 else 2127 last->next = next; 2128 last = next; 2129 2130 next->next = NULL; 2131 next->wr_id = user_wr->wr_id; 2132 next->num_sge = user_wr->num_sge; 2133 next->opcode = user_wr->opcode; 2134 next->send_flags = user_wr->send_flags; 2135 2136 if (next->num_sge) { 2137 next->sg_list = (void *) next + 2138 ALIGN(next_size, sizeof(struct ib_sge)); 2139 if (copy_from_user(next->sg_list, sgls + sg_ind, 2140 next->num_sge * 2141 sizeof(struct ib_sge))) { 2142 ret = -EFAULT; 2143 goto out_put; 2144 } 2145 sg_ind += next->num_sge; 2146 } else 2147 next->sg_list = NULL; 2148 } 2149 2150 resp.bad_wr = 0; 2151 ret = qp->device->ops.post_send(qp->real_qp, wr, &bad_wr); 2152 if (ret) 2153 for (next = wr; next; next = next->next) { 2154 ++resp.bad_wr; 2155 if (next == bad_wr) 2156 break; 2157 } 2158 2159 ret2 = uverbs_response(attrs, &resp, sizeof(resp)); 2160 if (ret2) 2161 ret = ret2; 2162 2163 out_put: 2164 uobj_put_obj_read(qp); 2165 2166 while (wr) { 2167 if (is_ud && ud_wr(wr)->ah) 2168 uobj_put_obj_read(ud_wr(wr)->ah); 2169 next = wr->next; 2170 kfree(wr); 2171 wr = next; 2172 } 2173 2174 out: 2175 kfree(user_wr); 2176 2177 return ret; 2178 } 2179 2180 static struct ib_recv_wr * 2181 ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count, 2182 u32 wqe_size, u32 sge_count) 2183 { 2184 struct ib_uverbs_recv_wr *user_wr; 2185 struct ib_recv_wr *wr = NULL, *last, *next; 2186 int sg_ind; 2187 int i; 2188 int ret; 2189 const struct ib_sge __user *sgls; 2190 const void __user *wqes; 2191 2192 if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) 2193 return ERR_PTR(-EINVAL); 2194 2195 wqes = uverbs_request_next_ptr(iter, wqe_size * wr_count); 2196 if (IS_ERR(wqes)) 2197 return ERR_CAST(wqes); 2198 sgls = uverbs_request_next_ptr( 2199 iter, sge_count * sizeof(struct ib_uverbs_sge)); 2200 if (IS_ERR(sgls)) 2201 return ERR_CAST(sgls); 2202 ret = uverbs_request_finish(iter); 2203 if (ret) 2204 return ERR_PTR(ret); 2205 2206 user_wr = kmalloc(wqe_size, GFP_KERNEL); 2207 if (!user_wr) 2208 return ERR_PTR(-ENOMEM); 2209 2210 sg_ind = 0; 2211 last = NULL; 2212 for (i = 0; i < wr_count; ++i) { 2213 if (copy_from_user(user_wr, wqes + i * wqe_size, 2214 wqe_size)) { 2215 ret = -EFAULT; 2216 goto err; 2217 } 2218 2219 if (user_wr->num_sge + sg_ind > sge_count) { 2220 ret = -EINVAL; 2221 goto err; 2222 } 2223 2224 if (user_wr->num_sge >= 2225 (U32_MAX - ALIGN(sizeof *next, sizeof (struct ib_sge))) / 2226 sizeof (struct ib_sge)) { 2227 ret = -EINVAL; 2228 goto err; 2229 } 2230 2231 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + 2232 user_wr->num_sge * sizeof (struct ib_sge), 2233 GFP_KERNEL); 2234 if (!next) { 2235 ret = -ENOMEM; 2236 goto err; 2237 } 2238 2239 if (!last) 2240 wr = next; 2241 else 2242 last->next = next; 2243 last = next; 2244 2245 next->next = NULL; 2246 next->wr_id = user_wr->wr_id; 2247 next->num_sge = user_wr->num_sge; 2248 2249 if (next->num_sge) { 2250 next->sg_list = (void *) next + 2251 ALIGN(sizeof *next, sizeof (struct ib_sge)); 2252 if (copy_from_user(next->sg_list, sgls + sg_ind, 2253 next->num_sge * 2254 sizeof(struct ib_sge))) { 2255 ret = -EFAULT; 2256 goto err; 2257 } 2258 sg_ind += next->num_sge; 2259 } else 2260 next->sg_list = NULL; 2261 } 2262 2263 kfree(user_wr); 2264 return wr; 2265 2266 err: 2267 kfree(user_wr); 2268 2269 while (wr) { 2270 next = wr->next; 2271 kfree(wr); 2272 wr = next; 2273 } 2274 2275 return ERR_PTR(ret); 2276 } 2277 2278 static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs) 2279 { 2280 struct ib_uverbs_post_recv cmd; 2281 struct ib_uverbs_post_recv_resp resp; 2282 struct ib_recv_wr *wr, *next; 2283 const struct ib_recv_wr *bad_wr; 2284 struct ib_qp *qp; 2285 int ret, ret2; 2286 struct uverbs_req_iter iter; 2287 2288 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 2289 if (ret) 2290 return ret; 2291 2292 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size, 2293 cmd.sge_count); 2294 if (IS_ERR(wr)) 2295 return PTR_ERR(wr); 2296 2297 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2298 if (!qp) { 2299 ret = -EINVAL; 2300 goto out; 2301 } 2302 2303 resp.bad_wr = 0; 2304 ret = qp->device->ops.post_recv(qp->real_qp, wr, &bad_wr); 2305 2306 uobj_put_obj_read(qp); 2307 if (ret) { 2308 for (next = wr; next; next = next->next) { 2309 ++resp.bad_wr; 2310 if (next == bad_wr) 2311 break; 2312 } 2313 } 2314 2315 ret2 = uverbs_response(attrs, &resp, sizeof(resp)); 2316 if (ret2) 2317 ret = ret2; 2318 out: 2319 while (wr) { 2320 next = wr->next; 2321 kfree(wr); 2322 wr = next; 2323 } 2324 2325 return ret; 2326 } 2327 2328 static int ib_uverbs_post_srq_recv(struct uverbs_attr_bundle *attrs) 2329 { 2330 struct ib_uverbs_post_srq_recv cmd; 2331 struct ib_uverbs_post_srq_recv_resp resp; 2332 struct ib_recv_wr *wr, *next; 2333 const struct ib_recv_wr *bad_wr; 2334 struct ib_srq *srq; 2335 int ret, ret2; 2336 struct uverbs_req_iter iter; 2337 2338 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 2339 if (ret) 2340 return ret; 2341 2342 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size, 2343 cmd.sge_count); 2344 if (IS_ERR(wr)) 2345 return PTR_ERR(wr); 2346 2347 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 2348 if (!srq) { 2349 ret = -EINVAL; 2350 goto out; 2351 } 2352 2353 resp.bad_wr = 0; 2354 ret = srq->device->ops.post_srq_recv(srq, wr, &bad_wr); 2355 2356 uobj_put_obj_read(srq); 2357 2358 if (ret) 2359 for (next = wr; next; next = next->next) { 2360 ++resp.bad_wr; 2361 if (next == bad_wr) 2362 break; 2363 } 2364 2365 ret2 = uverbs_response(attrs, &resp, sizeof(resp)); 2366 if (ret2) 2367 ret = ret2; 2368 2369 out: 2370 while (wr) { 2371 next = wr->next; 2372 kfree(wr); 2373 wr = next; 2374 } 2375 2376 return ret; 2377 } 2378 2379 static int ib_uverbs_create_ah(struct uverbs_attr_bundle *attrs) 2380 { 2381 struct ib_uverbs_create_ah cmd; 2382 struct ib_uverbs_create_ah_resp resp; 2383 struct ib_uobject *uobj; 2384 struct ib_pd *pd; 2385 struct ib_ah *ah; 2386 struct rdma_ah_attr attr = {}; 2387 int ret; 2388 struct ib_device *ib_dev; 2389 2390 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2391 if (ret) 2392 return ret; 2393 2394 uobj = uobj_alloc(UVERBS_OBJECT_AH, attrs, &ib_dev); 2395 if (IS_ERR(uobj)) 2396 return PTR_ERR(uobj); 2397 2398 if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num)) { 2399 ret = -EINVAL; 2400 goto err; 2401 } 2402 2403 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 2404 if (!pd) { 2405 ret = -EINVAL; 2406 goto err; 2407 } 2408 2409 attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num); 2410 rdma_ah_set_make_grd(&attr, false); 2411 rdma_ah_set_dlid(&attr, cmd.attr.dlid); 2412 rdma_ah_set_sl(&attr, cmd.attr.sl); 2413 rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits); 2414 rdma_ah_set_static_rate(&attr, cmd.attr.static_rate); 2415 rdma_ah_set_port_num(&attr, cmd.attr.port_num); 2416 2417 if (cmd.attr.is_global) { 2418 rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label, 2419 cmd.attr.grh.sgid_index, 2420 cmd.attr.grh.hop_limit, 2421 cmd.attr.grh.traffic_class); 2422 rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid); 2423 } else { 2424 rdma_ah_set_ah_flags(&attr, 0); 2425 } 2426 2427 ah = rdma_create_user_ah(pd, &attr, &attrs->driver_udata); 2428 if (IS_ERR(ah)) { 2429 ret = PTR_ERR(ah); 2430 goto err_put; 2431 } 2432 2433 ah->uobject = uobj; 2434 uobj->user_handle = cmd.user_handle; 2435 uobj->object = ah; 2436 2437 resp.ah_handle = uobj->id; 2438 2439 ret = uverbs_response(attrs, &resp, sizeof(resp)); 2440 if (ret) 2441 goto err_copy; 2442 2443 uobj_put_obj_read(pd); 2444 return uobj_alloc_commit(uobj); 2445 2446 err_copy: 2447 rdma_destroy_ah(ah, RDMA_DESTROY_AH_SLEEPABLE); 2448 2449 err_put: 2450 uobj_put_obj_read(pd); 2451 2452 err: 2453 uobj_alloc_abort(uobj); 2454 return ret; 2455 } 2456 2457 static int ib_uverbs_destroy_ah(struct uverbs_attr_bundle *attrs) 2458 { 2459 struct ib_uverbs_destroy_ah cmd; 2460 int ret; 2461 2462 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2463 if (ret) 2464 return ret; 2465 2466 return uobj_perform_destroy(UVERBS_OBJECT_AH, cmd.ah_handle, attrs); 2467 } 2468 2469 static int ib_uverbs_attach_mcast(struct uverbs_attr_bundle *attrs) 2470 { 2471 struct ib_uverbs_attach_mcast cmd; 2472 struct ib_qp *qp; 2473 struct ib_uqp_object *obj; 2474 struct ib_uverbs_mcast_entry *mcast; 2475 int ret; 2476 2477 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2478 if (ret) 2479 return ret; 2480 2481 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2482 if (!qp) 2483 return -EINVAL; 2484 2485 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); 2486 2487 mutex_lock(&obj->mcast_lock); 2488 list_for_each_entry(mcast, &obj->mcast_list, list) 2489 if (cmd.mlid == mcast->lid && 2490 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { 2491 ret = 0; 2492 goto out_put; 2493 } 2494 2495 mcast = kmalloc(sizeof *mcast, GFP_KERNEL); 2496 if (!mcast) { 2497 ret = -ENOMEM; 2498 goto out_put; 2499 } 2500 2501 mcast->lid = cmd.mlid; 2502 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); 2503 2504 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); 2505 if (!ret) 2506 list_add_tail(&mcast->list, &obj->mcast_list); 2507 else 2508 kfree(mcast); 2509 2510 out_put: 2511 mutex_unlock(&obj->mcast_lock); 2512 uobj_put_obj_read(qp); 2513 2514 return ret; 2515 } 2516 2517 static int ib_uverbs_detach_mcast(struct uverbs_attr_bundle *attrs) 2518 { 2519 struct ib_uverbs_detach_mcast cmd; 2520 struct ib_uqp_object *obj; 2521 struct ib_qp *qp; 2522 struct ib_uverbs_mcast_entry *mcast; 2523 int ret = -EINVAL; 2524 bool found = false; 2525 2526 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2527 if (ret) 2528 return ret; 2529 2530 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2531 if (!qp) 2532 return -EINVAL; 2533 2534 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); 2535 mutex_lock(&obj->mcast_lock); 2536 2537 list_for_each_entry(mcast, &obj->mcast_list, list) 2538 if (cmd.mlid == mcast->lid && 2539 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { 2540 list_del(&mcast->list); 2541 kfree(mcast); 2542 found = true; 2543 break; 2544 } 2545 2546 if (!found) { 2547 ret = -EINVAL; 2548 goto out_put; 2549 } 2550 2551 ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid); 2552 2553 out_put: 2554 mutex_unlock(&obj->mcast_lock); 2555 uobj_put_obj_read(qp); 2556 return ret; 2557 } 2558 2559 struct ib_uflow_resources *flow_resources_alloc(size_t num_specs) 2560 { 2561 struct ib_uflow_resources *resources; 2562 2563 resources = kzalloc(sizeof(*resources), GFP_KERNEL); 2564 2565 if (!resources) 2566 return NULL; 2567 2568 if (!num_specs) 2569 goto out; 2570 2571 resources->counters = 2572 kcalloc(num_specs, sizeof(*resources->counters), GFP_KERNEL); 2573 resources->collection = 2574 kcalloc(num_specs, sizeof(*resources->collection), GFP_KERNEL); 2575 2576 if (!resources->counters || !resources->collection) 2577 goto err; 2578 2579 out: 2580 resources->max = num_specs; 2581 return resources; 2582 2583 err: 2584 kfree(resources->counters); 2585 kfree(resources); 2586 2587 return NULL; 2588 } 2589 EXPORT_SYMBOL(flow_resources_alloc); 2590 2591 void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res) 2592 { 2593 unsigned int i; 2594 2595 if (!uflow_res) 2596 return; 2597 2598 for (i = 0; i < uflow_res->collection_num; i++) 2599 atomic_dec(&uflow_res->collection[i]->usecnt); 2600 2601 for (i = 0; i < uflow_res->counters_num; i++) 2602 atomic_dec(&uflow_res->counters[i]->usecnt); 2603 2604 kfree(uflow_res->collection); 2605 kfree(uflow_res->counters); 2606 kfree(uflow_res); 2607 } 2608 EXPORT_SYMBOL(ib_uverbs_flow_resources_free); 2609 2610 void flow_resources_add(struct ib_uflow_resources *uflow_res, 2611 enum ib_flow_spec_type type, 2612 void *ibobj) 2613 { 2614 WARN_ON(uflow_res->num >= uflow_res->max); 2615 2616 switch (type) { 2617 case IB_FLOW_SPEC_ACTION_HANDLE: 2618 atomic_inc(&((struct ib_flow_action *)ibobj)->usecnt); 2619 uflow_res->collection[uflow_res->collection_num++] = 2620 (struct ib_flow_action *)ibobj; 2621 break; 2622 case IB_FLOW_SPEC_ACTION_COUNT: 2623 atomic_inc(&((struct ib_counters *)ibobj)->usecnt); 2624 uflow_res->counters[uflow_res->counters_num++] = 2625 (struct ib_counters *)ibobj; 2626 break; 2627 default: 2628 WARN_ON(1); 2629 } 2630 2631 uflow_res->num++; 2632 } 2633 EXPORT_SYMBOL(flow_resources_add); 2634 2635 static int kern_spec_to_ib_spec_action(const struct uverbs_attr_bundle *attrs, 2636 struct ib_uverbs_flow_spec *kern_spec, 2637 union ib_flow_spec *ib_spec, 2638 struct ib_uflow_resources *uflow_res) 2639 { 2640 ib_spec->type = kern_spec->type; 2641 switch (ib_spec->type) { 2642 case IB_FLOW_SPEC_ACTION_TAG: 2643 if (kern_spec->flow_tag.size != 2644 sizeof(struct ib_uverbs_flow_spec_action_tag)) 2645 return -EINVAL; 2646 2647 ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag); 2648 ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id; 2649 break; 2650 case IB_FLOW_SPEC_ACTION_DROP: 2651 if (kern_spec->drop.size != 2652 sizeof(struct ib_uverbs_flow_spec_action_drop)) 2653 return -EINVAL; 2654 2655 ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop); 2656 break; 2657 case IB_FLOW_SPEC_ACTION_HANDLE: 2658 if (kern_spec->action.size != 2659 sizeof(struct ib_uverbs_flow_spec_action_handle)) 2660 return -EOPNOTSUPP; 2661 ib_spec->action.act = uobj_get_obj_read(flow_action, 2662 UVERBS_OBJECT_FLOW_ACTION, 2663 kern_spec->action.handle, 2664 attrs); 2665 if (!ib_spec->action.act) 2666 return -EINVAL; 2667 ib_spec->action.size = 2668 sizeof(struct ib_flow_spec_action_handle); 2669 flow_resources_add(uflow_res, 2670 IB_FLOW_SPEC_ACTION_HANDLE, 2671 ib_spec->action.act); 2672 uobj_put_obj_read(ib_spec->action.act); 2673 break; 2674 case IB_FLOW_SPEC_ACTION_COUNT: 2675 if (kern_spec->flow_count.size != 2676 sizeof(struct ib_uverbs_flow_spec_action_count)) 2677 return -EINVAL; 2678 ib_spec->flow_count.counters = 2679 uobj_get_obj_read(counters, 2680 UVERBS_OBJECT_COUNTERS, 2681 kern_spec->flow_count.handle, 2682 attrs); 2683 if (!ib_spec->flow_count.counters) 2684 return -EINVAL; 2685 ib_spec->flow_count.size = 2686 sizeof(struct ib_flow_spec_action_count); 2687 flow_resources_add(uflow_res, 2688 IB_FLOW_SPEC_ACTION_COUNT, 2689 ib_spec->flow_count.counters); 2690 uobj_put_obj_read(ib_spec->flow_count.counters); 2691 break; 2692 default: 2693 return -EINVAL; 2694 } 2695 return 0; 2696 } 2697 2698 static size_t kern_spec_filter_sz(const struct ib_uverbs_flow_spec_hdr *spec) 2699 { 2700 /* Returns user space filter size, includes padding */ 2701 return (spec->size - sizeof(struct ib_uverbs_flow_spec_hdr)) / 2; 2702 } 2703 2704 static ssize_t spec_filter_size(const void *kern_spec_filter, u16 kern_filter_size, 2705 u16 ib_real_filter_sz) 2706 { 2707 /* 2708 * User space filter structures must be 64 bit aligned, otherwise this 2709 * may pass, but we won't handle additional new attributes. 2710 */ 2711 2712 if (kern_filter_size > ib_real_filter_sz) { 2713 if (memchr_inv(kern_spec_filter + 2714 ib_real_filter_sz, 0, 2715 kern_filter_size - ib_real_filter_sz)) 2716 return -EINVAL; 2717 return ib_real_filter_sz; 2718 } 2719 return kern_filter_size; 2720 } 2721 2722 int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type, 2723 const void *kern_spec_mask, 2724 const void *kern_spec_val, 2725 size_t kern_filter_sz, 2726 union ib_flow_spec *ib_spec) 2727 { 2728 ssize_t actual_filter_sz; 2729 ssize_t ib_filter_sz; 2730 2731 /* User flow spec size must be aligned to 4 bytes */ 2732 if (kern_filter_sz != ALIGN(kern_filter_sz, 4)) 2733 return -EINVAL; 2734 2735 ib_spec->type = type; 2736 2737 if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL)) 2738 return -EINVAL; 2739 2740 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) { 2741 case IB_FLOW_SPEC_ETH: 2742 ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz); 2743 actual_filter_sz = spec_filter_size(kern_spec_mask, 2744 kern_filter_sz, 2745 ib_filter_sz); 2746 if (actual_filter_sz <= 0) 2747 return -EINVAL; 2748 ib_spec->size = sizeof(struct ib_flow_spec_eth); 2749 memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz); 2750 memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz); 2751 break; 2752 case IB_FLOW_SPEC_IPV4: 2753 ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz); 2754 actual_filter_sz = spec_filter_size(kern_spec_mask, 2755 kern_filter_sz, 2756 ib_filter_sz); 2757 if (actual_filter_sz <= 0) 2758 return -EINVAL; 2759 ib_spec->size = sizeof(struct ib_flow_spec_ipv4); 2760 memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz); 2761 memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz); 2762 break; 2763 case IB_FLOW_SPEC_IPV6: 2764 ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz); 2765 actual_filter_sz = spec_filter_size(kern_spec_mask, 2766 kern_filter_sz, 2767 ib_filter_sz); 2768 if (actual_filter_sz <= 0) 2769 return -EINVAL; 2770 ib_spec->size = sizeof(struct ib_flow_spec_ipv6); 2771 memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz); 2772 memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz); 2773 2774 if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) || 2775 (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20)) 2776 return -EINVAL; 2777 break; 2778 case IB_FLOW_SPEC_TCP: 2779 case IB_FLOW_SPEC_UDP: 2780 ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz); 2781 actual_filter_sz = spec_filter_size(kern_spec_mask, 2782 kern_filter_sz, 2783 ib_filter_sz); 2784 if (actual_filter_sz <= 0) 2785 return -EINVAL; 2786 ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp); 2787 memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz); 2788 memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz); 2789 break; 2790 case IB_FLOW_SPEC_VXLAN_TUNNEL: 2791 ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz); 2792 actual_filter_sz = spec_filter_size(kern_spec_mask, 2793 kern_filter_sz, 2794 ib_filter_sz); 2795 if (actual_filter_sz <= 0) 2796 return -EINVAL; 2797 ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel); 2798 memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz); 2799 memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz); 2800 2801 if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) || 2802 (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24)) 2803 return -EINVAL; 2804 break; 2805 case IB_FLOW_SPEC_ESP: 2806 ib_filter_sz = offsetof(struct ib_flow_esp_filter, real_sz); 2807 actual_filter_sz = spec_filter_size(kern_spec_mask, 2808 kern_filter_sz, 2809 ib_filter_sz); 2810 if (actual_filter_sz <= 0) 2811 return -EINVAL; 2812 ib_spec->esp.size = sizeof(struct ib_flow_spec_esp); 2813 memcpy(&ib_spec->esp.val, kern_spec_val, actual_filter_sz); 2814 memcpy(&ib_spec->esp.mask, kern_spec_mask, actual_filter_sz); 2815 break; 2816 case IB_FLOW_SPEC_GRE: 2817 ib_filter_sz = offsetof(struct ib_flow_gre_filter, real_sz); 2818 actual_filter_sz = spec_filter_size(kern_spec_mask, 2819 kern_filter_sz, 2820 ib_filter_sz); 2821 if (actual_filter_sz <= 0) 2822 return -EINVAL; 2823 ib_spec->gre.size = sizeof(struct ib_flow_spec_gre); 2824 memcpy(&ib_spec->gre.val, kern_spec_val, actual_filter_sz); 2825 memcpy(&ib_spec->gre.mask, kern_spec_mask, actual_filter_sz); 2826 break; 2827 case IB_FLOW_SPEC_MPLS: 2828 ib_filter_sz = offsetof(struct ib_flow_mpls_filter, real_sz); 2829 actual_filter_sz = spec_filter_size(kern_spec_mask, 2830 kern_filter_sz, 2831 ib_filter_sz); 2832 if (actual_filter_sz <= 0) 2833 return -EINVAL; 2834 ib_spec->mpls.size = sizeof(struct ib_flow_spec_mpls); 2835 memcpy(&ib_spec->mpls.val, kern_spec_val, actual_filter_sz); 2836 memcpy(&ib_spec->mpls.mask, kern_spec_mask, actual_filter_sz); 2837 break; 2838 default: 2839 return -EINVAL; 2840 } 2841 return 0; 2842 } 2843 2844 static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec, 2845 union ib_flow_spec *ib_spec) 2846 { 2847 ssize_t kern_filter_sz; 2848 void *kern_spec_mask; 2849 void *kern_spec_val; 2850 2851 kern_filter_sz = kern_spec_filter_sz(&kern_spec->hdr); 2852 2853 kern_spec_val = (void *)kern_spec + 2854 sizeof(struct ib_uverbs_flow_spec_hdr); 2855 kern_spec_mask = kern_spec_val + kern_filter_sz; 2856 2857 return ib_uverbs_kern_spec_to_ib_spec_filter(kern_spec->type, 2858 kern_spec_mask, 2859 kern_spec_val, 2860 kern_filter_sz, ib_spec); 2861 } 2862 2863 static int kern_spec_to_ib_spec(struct uverbs_attr_bundle *attrs, 2864 struct ib_uverbs_flow_spec *kern_spec, 2865 union ib_flow_spec *ib_spec, 2866 struct ib_uflow_resources *uflow_res) 2867 { 2868 if (kern_spec->reserved) 2869 return -EINVAL; 2870 2871 if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG) 2872 return kern_spec_to_ib_spec_action(attrs, kern_spec, ib_spec, 2873 uflow_res); 2874 else 2875 return kern_spec_to_ib_spec_filter(kern_spec, ib_spec); 2876 } 2877 2878 static int ib_uverbs_ex_create_wq(struct uverbs_attr_bundle *attrs) 2879 { 2880 struct ib_uverbs_ex_create_wq cmd; 2881 struct ib_uverbs_ex_create_wq_resp resp = {}; 2882 struct ib_uwq_object *obj; 2883 int err = 0; 2884 struct ib_cq *cq; 2885 struct ib_pd *pd; 2886 struct ib_wq *wq; 2887 struct ib_wq_init_attr wq_init_attr = {}; 2888 struct ib_device *ib_dev; 2889 2890 err = uverbs_request(attrs, &cmd, sizeof(cmd)); 2891 if (err) 2892 return err; 2893 2894 if (cmd.comp_mask) 2895 return -EOPNOTSUPP; 2896 2897 obj = (struct ib_uwq_object *)uobj_alloc(UVERBS_OBJECT_WQ, attrs, 2898 &ib_dev); 2899 if (IS_ERR(obj)) 2900 return PTR_ERR(obj); 2901 2902 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 2903 if (!pd) { 2904 err = -EINVAL; 2905 goto err_uobj; 2906 } 2907 2908 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 2909 if (!cq) { 2910 err = -EINVAL; 2911 goto err_put_pd; 2912 } 2913 2914 wq_init_attr.cq = cq; 2915 wq_init_attr.max_sge = cmd.max_sge; 2916 wq_init_attr.max_wr = cmd.max_wr; 2917 wq_init_attr.wq_context = attrs->ufile; 2918 wq_init_attr.wq_type = cmd.wq_type; 2919 wq_init_attr.event_handler = ib_uverbs_wq_event_handler; 2920 wq_init_attr.create_flags = cmd.create_flags; 2921 obj->uevent.events_reported = 0; 2922 INIT_LIST_HEAD(&obj->uevent.event_list); 2923 2924 wq = pd->device->ops.create_wq(pd, &wq_init_attr, &attrs->driver_udata); 2925 if (IS_ERR(wq)) { 2926 err = PTR_ERR(wq); 2927 goto err_put_cq; 2928 } 2929 2930 wq->uobject = &obj->uevent.uobject; 2931 obj->uevent.uobject.object = wq; 2932 wq->wq_type = wq_init_attr.wq_type; 2933 wq->cq = cq; 2934 wq->pd = pd; 2935 wq->device = pd->device; 2936 wq->wq_context = wq_init_attr.wq_context; 2937 atomic_set(&wq->usecnt, 0); 2938 atomic_inc(&pd->usecnt); 2939 atomic_inc(&cq->usecnt); 2940 wq->uobject = &obj->uevent.uobject; 2941 obj->uevent.uobject.object = wq; 2942 2943 memset(&resp, 0, sizeof(resp)); 2944 resp.wq_handle = obj->uevent.uobject.id; 2945 resp.max_sge = wq_init_attr.max_sge; 2946 resp.max_wr = wq_init_attr.max_wr; 2947 resp.wqn = wq->wq_num; 2948 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 2949 err = uverbs_response(attrs, &resp, sizeof(resp)); 2950 if (err) 2951 goto err_copy; 2952 2953 uobj_put_obj_read(pd); 2954 uobj_put_obj_read(cq); 2955 return uobj_alloc_commit(&obj->uevent.uobject); 2956 2957 err_copy: 2958 ib_destroy_wq(wq); 2959 err_put_cq: 2960 uobj_put_obj_read(cq); 2961 err_put_pd: 2962 uobj_put_obj_read(pd); 2963 err_uobj: 2964 uobj_alloc_abort(&obj->uevent.uobject); 2965 2966 return err; 2967 } 2968 2969 static int ib_uverbs_ex_destroy_wq(struct uverbs_attr_bundle *attrs) 2970 { 2971 struct ib_uverbs_ex_destroy_wq cmd; 2972 struct ib_uverbs_ex_destroy_wq_resp resp = {}; 2973 struct ib_uobject *uobj; 2974 struct ib_uwq_object *obj; 2975 int ret; 2976 2977 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2978 if (ret) 2979 return ret; 2980 2981 if (cmd.comp_mask) 2982 return -EOPNOTSUPP; 2983 2984 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 2985 uobj = uobj_get_destroy(UVERBS_OBJECT_WQ, cmd.wq_handle, attrs); 2986 if (IS_ERR(uobj)) 2987 return PTR_ERR(uobj); 2988 2989 obj = container_of(uobj, struct ib_uwq_object, uevent.uobject); 2990 resp.events_reported = obj->uevent.events_reported; 2991 2992 uobj_put_destroy(uobj); 2993 2994 return uverbs_response(attrs, &resp, sizeof(resp)); 2995 } 2996 2997 static int ib_uverbs_ex_modify_wq(struct uverbs_attr_bundle *attrs) 2998 { 2999 struct ib_uverbs_ex_modify_wq cmd; 3000 struct ib_wq *wq; 3001 struct ib_wq_attr wq_attr = {}; 3002 int ret; 3003 3004 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3005 if (ret) 3006 return ret; 3007 3008 if (!cmd.attr_mask) 3009 return -EINVAL; 3010 3011 if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS)) 3012 return -EINVAL; 3013 3014 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, cmd.wq_handle, attrs); 3015 if (!wq) 3016 return -EINVAL; 3017 3018 wq_attr.curr_wq_state = cmd.curr_wq_state; 3019 wq_attr.wq_state = cmd.wq_state; 3020 if (cmd.attr_mask & IB_WQ_FLAGS) { 3021 wq_attr.flags = cmd.flags; 3022 wq_attr.flags_mask = cmd.flags_mask; 3023 } 3024 ret = wq->device->ops.modify_wq(wq, &wq_attr, cmd.attr_mask, 3025 &attrs->driver_udata); 3026 uobj_put_obj_read(wq); 3027 return ret; 3028 } 3029 3030 static int ib_uverbs_ex_create_rwq_ind_table(struct uverbs_attr_bundle *attrs) 3031 { 3032 struct ib_uverbs_ex_create_rwq_ind_table cmd; 3033 struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {}; 3034 struct ib_uobject *uobj; 3035 int err; 3036 struct ib_rwq_ind_table_init_attr init_attr = {}; 3037 struct ib_rwq_ind_table *rwq_ind_tbl; 3038 struct ib_wq **wqs = NULL; 3039 u32 *wqs_handles = NULL; 3040 struct ib_wq *wq = NULL; 3041 int i, j, num_read_wqs; 3042 u32 num_wq_handles; 3043 struct uverbs_req_iter iter; 3044 struct ib_device *ib_dev; 3045 3046 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 3047 if (err) 3048 return err; 3049 3050 if (cmd.comp_mask) 3051 return -EOPNOTSUPP; 3052 3053 if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE) 3054 return -EINVAL; 3055 3056 num_wq_handles = 1 << cmd.log_ind_tbl_size; 3057 wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles), 3058 GFP_KERNEL); 3059 if (!wqs_handles) 3060 return -ENOMEM; 3061 3062 err = uverbs_request_next(&iter, wqs_handles, 3063 num_wq_handles * sizeof(__u32)); 3064 if (err) 3065 goto err_free; 3066 3067 err = uverbs_request_finish(&iter); 3068 if (err) 3069 goto err_free; 3070 3071 wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL); 3072 if (!wqs) { 3073 err = -ENOMEM; 3074 goto err_free; 3075 } 3076 3077 for (num_read_wqs = 0; num_read_wqs < num_wq_handles; 3078 num_read_wqs++) { 3079 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, 3080 wqs_handles[num_read_wqs], attrs); 3081 if (!wq) { 3082 err = -EINVAL; 3083 goto put_wqs; 3084 } 3085 3086 wqs[num_read_wqs] = wq; 3087 } 3088 3089 uobj = uobj_alloc(UVERBS_OBJECT_RWQ_IND_TBL, attrs, &ib_dev); 3090 if (IS_ERR(uobj)) { 3091 err = PTR_ERR(uobj); 3092 goto put_wqs; 3093 } 3094 3095 init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size; 3096 init_attr.ind_tbl = wqs; 3097 3098 rwq_ind_tbl = ib_dev->ops.create_rwq_ind_table(ib_dev, &init_attr, 3099 &attrs->driver_udata); 3100 3101 if (IS_ERR(rwq_ind_tbl)) { 3102 err = PTR_ERR(rwq_ind_tbl); 3103 goto err_uobj; 3104 } 3105 3106 rwq_ind_tbl->ind_tbl = wqs; 3107 rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size; 3108 rwq_ind_tbl->uobject = uobj; 3109 uobj->object = rwq_ind_tbl; 3110 rwq_ind_tbl->device = ib_dev; 3111 atomic_set(&rwq_ind_tbl->usecnt, 0); 3112 3113 for (i = 0; i < num_wq_handles; i++) 3114 atomic_inc(&wqs[i]->usecnt); 3115 3116 resp.ind_tbl_handle = uobj->id; 3117 resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num; 3118 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 3119 3120 err = uverbs_response(attrs, &resp, sizeof(resp)); 3121 if (err) 3122 goto err_copy; 3123 3124 kfree(wqs_handles); 3125 3126 for (j = 0; j < num_read_wqs; j++) 3127 uobj_put_obj_read(wqs[j]); 3128 3129 return uobj_alloc_commit(uobj); 3130 3131 err_copy: 3132 ib_destroy_rwq_ind_table(rwq_ind_tbl); 3133 err_uobj: 3134 uobj_alloc_abort(uobj); 3135 put_wqs: 3136 for (j = 0; j < num_read_wqs; j++) 3137 uobj_put_obj_read(wqs[j]); 3138 err_free: 3139 kfree(wqs_handles); 3140 kfree(wqs); 3141 return err; 3142 } 3143 3144 static int ib_uverbs_ex_destroy_rwq_ind_table(struct uverbs_attr_bundle *attrs) 3145 { 3146 struct ib_uverbs_ex_destroy_rwq_ind_table cmd; 3147 int ret; 3148 3149 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3150 if (ret) 3151 return ret; 3152 3153 if (cmd.comp_mask) 3154 return -EOPNOTSUPP; 3155 3156 return uobj_perform_destroy(UVERBS_OBJECT_RWQ_IND_TBL, 3157 cmd.ind_tbl_handle, attrs); 3158 } 3159 3160 static int ib_uverbs_ex_create_flow(struct uverbs_attr_bundle *attrs) 3161 { 3162 struct ib_uverbs_create_flow cmd; 3163 struct ib_uverbs_create_flow_resp resp; 3164 struct ib_uobject *uobj; 3165 struct ib_flow *flow_id; 3166 struct ib_uverbs_flow_attr *kern_flow_attr; 3167 struct ib_flow_attr *flow_attr; 3168 struct ib_qp *qp; 3169 struct ib_uflow_resources *uflow_res; 3170 struct ib_uverbs_flow_spec_hdr *kern_spec; 3171 struct uverbs_req_iter iter; 3172 int err; 3173 void *ib_spec; 3174 int i; 3175 struct ib_device *ib_dev; 3176 3177 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 3178 if (err) 3179 return err; 3180 3181 if (cmd.comp_mask) 3182 return -EINVAL; 3183 3184 if (!capable(CAP_NET_RAW)) 3185 return -EPERM; 3186 3187 if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED) 3188 return -EINVAL; 3189 3190 if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) && 3191 ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) || 3192 (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT))) 3193 return -EINVAL; 3194 3195 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS) 3196 return -EINVAL; 3197 3198 if (cmd.flow_attr.size > 3199 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec))) 3200 return -EINVAL; 3201 3202 if (cmd.flow_attr.reserved[0] || 3203 cmd.flow_attr.reserved[1]) 3204 return -EINVAL; 3205 3206 if (cmd.flow_attr.num_of_specs) { 3207 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size, 3208 GFP_KERNEL); 3209 if (!kern_flow_attr) 3210 return -ENOMEM; 3211 3212 *kern_flow_attr = cmd.flow_attr; 3213 err = uverbs_request_next(&iter, &kern_flow_attr->flow_specs, 3214 cmd.flow_attr.size); 3215 if (err) 3216 goto err_free_attr; 3217 } else { 3218 kern_flow_attr = &cmd.flow_attr; 3219 } 3220 3221 err = uverbs_request_finish(&iter); 3222 if (err) 3223 goto err_free_attr; 3224 3225 uobj = uobj_alloc(UVERBS_OBJECT_FLOW, attrs, &ib_dev); 3226 if (IS_ERR(uobj)) { 3227 err = PTR_ERR(uobj); 3228 goto err_free_attr; 3229 } 3230 3231 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 3232 if (!qp) { 3233 err = -EINVAL; 3234 goto err_uobj; 3235 } 3236 3237 if (qp->qp_type != IB_QPT_UD && qp->qp_type != IB_QPT_RAW_PACKET) { 3238 err = -EINVAL; 3239 goto err_put; 3240 } 3241 3242 flow_attr = kzalloc(struct_size(flow_attr, flows, 3243 cmd.flow_attr.num_of_specs), GFP_KERNEL); 3244 if (!flow_attr) { 3245 err = -ENOMEM; 3246 goto err_put; 3247 } 3248 uflow_res = flow_resources_alloc(cmd.flow_attr.num_of_specs); 3249 if (!uflow_res) { 3250 err = -ENOMEM; 3251 goto err_free_flow_attr; 3252 } 3253 3254 flow_attr->type = kern_flow_attr->type; 3255 flow_attr->priority = kern_flow_attr->priority; 3256 flow_attr->num_of_specs = kern_flow_attr->num_of_specs; 3257 flow_attr->port = kern_flow_attr->port; 3258 flow_attr->flags = kern_flow_attr->flags; 3259 flow_attr->size = sizeof(*flow_attr); 3260 3261 kern_spec = kern_flow_attr->flow_specs; 3262 ib_spec = flow_attr + 1; 3263 for (i = 0; i < flow_attr->num_of_specs && 3264 cmd.flow_attr.size >= sizeof(*kern_spec) && 3265 cmd.flow_attr.size >= kern_spec->size; 3266 i++) { 3267 err = kern_spec_to_ib_spec( 3268 attrs, (struct ib_uverbs_flow_spec *)kern_spec, 3269 ib_spec, uflow_res); 3270 if (err) 3271 goto err_free; 3272 3273 flow_attr->size += 3274 ((union ib_flow_spec *) ib_spec)->size; 3275 cmd.flow_attr.size -= kern_spec->size; 3276 kern_spec = ((void *)kern_spec) + kern_spec->size; 3277 ib_spec += ((union ib_flow_spec *) ib_spec)->size; 3278 } 3279 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) { 3280 pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n", 3281 i, cmd.flow_attr.size); 3282 err = -EINVAL; 3283 goto err_free; 3284 } 3285 3286 flow_id = qp->device->ops.create_flow( 3287 qp, flow_attr, IB_FLOW_DOMAIN_USER, &attrs->driver_udata); 3288 3289 if (IS_ERR(flow_id)) { 3290 err = PTR_ERR(flow_id); 3291 goto err_free; 3292 } 3293 3294 ib_set_flow(uobj, flow_id, qp, qp->device, uflow_res); 3295 3296 memset(&resp, 0, sizeof(resp)); 3297 resp.flow_handle = uobj->id; 3298 3299 err = uverbs_response(attrs, &resp, sizeof(resp)); 3300 if (err) 3301 goto err_copy; 3302 3303 uobj_put_obj_read(qp); 3304 kfree(flow_attr); 3305 if (cmd.flow_attr.num_of_specs) 3306 kfree(kern_flow_attr); 3307 return uobj_alloc_commit(uobj); 3308 err_copy: 3309 if (!qp->device->ops.destroy_flow(flow_id)) 3310 atomic_dec(&qp->usecnt); 3311 err_free: 3312 ib_uverbs_flow_resources_free(uflow_res); 3313 err_free_flow_attr: 3314 kfree(flow_attr); 3315 err_put: 3316 uobj_put_obj_read(qp); 3317 err_uobj: 3318 uobj_alloc_abort(uobj); 3319 err_free_attr: 3320 if (cmd.flow_attr.num_of_specs) 3321 kfree(kern_flow_attr); 3322 return err; 3323 } 3324 3325 static int ib_uverbs_ex_destroy_flow(struct uverbs_attr_bundle *attrs) 3326 { 3327 struct ib_uverbs_destroy_flow cmd; 3328 int ret; 3329 3330 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3331 if (ret) 3332 return ret; 3333 3334 if (cmd.comp_mask) 3335 return -EINVAL; 3336 3337 return uobj_perform_destroy(UVERBS_OBJECT_FLOW, cmd.flow_handle, attrs); 3338 } 3339 3340 static int __uverbs_create_xsrq(struct uverbs_attr_bundle *attrs, 3341 struct ib_uverbs_create_xsrq *cmd, 3342 struct ib_udata *udata) 3343 { 3344 struct ib_uverbs_create_srq_resp resp; 3345 struct ib_usrq_object *obj; 3346 struct ib_pd *pd; 3347 struct ib_srq *srq; 3348 struct ib_uobject *uninitialized_var(xrcd_uobj); 3349 struct ib_srq_init_attr attr; 3350 int ret; 3351 struct ib_device *ib_dev; 3352 3353 obj = (struct ib_usrq_object *)uobj_alloc(UVERBS_OBJECT_SRQ, attrs, 3354 &ib_dev); 3355 if (IS_ERR(obj)) 3356 return PTR_ERR(obj); 3357 3358 if (cmd->srq_type == IB_SRQT_TM) 3359 attr.ext.tag_matching.max_num_tags = cmd->max_num_tags; 3360 3361 if (cmd->srq_type == IB_SRQT_XRC) { 3362 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->xrcd_handle, 3363 attrs); 3364 if (IS_ERR(xrcd_uobj)) { 3365 ret = -EINVAL; 3366 goto err; 3367 } 3368 3369 attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object; 3370 if (!attr.ext.xrc.xrcd) { 3371 ret = -EINVAL; 3372 goto err_put_xrcd; 3373 } 3374 3375 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); 3376 atomic_inc(&obj->uxrcd->refcnt); 3377 } 3378 3379 if (ib_srq_has_cq(cmd->srq_type)) { 3380 attr.ext.cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, 3381 cmd->cq_handle, attrs); 3382 if (!attr.ext.cq) { 3383 ret = -EINVAL; 3384 goto err_put_xrcd; 3385 } 3386 } 3387 3388 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, attrs); 3389 if (!pd) { 3390 ret = -EINVAL; 3391 goto err_put_cq; 3392 } 3393 3394 attr.event_handler = ib_uverbs_srq_event_handler; 3395 attr.srq_context = attrs->ufile; 3396 attr.srq_type = cmd->srq_type; 3397 attr.attr.max_wr = cmd->max_wr; 3398 attr.attr.max_sge = cmd->max_sge; 3399 attr.attr.srq_limit = cmd->srq_limit; 3400 3401 obj->uevent.events_reported = 0; 3402 INIT_LIST_HEAD(&obj->uevent.event_list); 3403 3404 srq = pd->device->ops.create_srq(pd, &attr, udata); 3405 if (IS_ERR(srq)) { 3406 ret = PTR_ERR(srq); 3407 goto err_put; 3408 } 3409 3410 srq->device = pd->device; 3411 srq->pd = pd; 3412 srq->srq_type = cmd->srq_type; 3413 srq->uobject = &obj->uevent.uobject; 3414 srq->event_handler = attr.event_handler; 3415 srq->srq_context = attr.srq_context; 3416 3417 if (ib_srq_has_cq(cmd->srq_type)) { 3418 srq->ext.cq = attr.ext.cq; 3419 atomic_inc(&attr.ext.cq->usecnt); 3420 } 3421 3422 if (cmd->srq_type == IB_SRQT_XRC) { 3423 srq->ext.xrc.xrcd = attr.ext.xrc.xrcd; 3424 atomic_inc(&attr.ext.xrc.xrcd->usecnt); 3425 } 3426 3427 atomic_inc(&pd->usecnt); 3428 atomic_set(&srq->usecnt, 0); 3429 3430 obj->uevent.uobject.object = srq; 3431 obj->uevent.uobject.user_handle = cmd->user_handle; 3432 3433 memset(&resp, 0, sizeof resp); 3434 resp.srq_handle = obj->uevent.uobject.id; 3435 resp.max_wr = attr.attr.max_wr; 3436 resp.max_sge = attr.attr.max_sge; 3437 if (cmd->srq_type == IB_SRQT_XRC) 3438 resp.srqn = srq->ext.xrc.srq_num; 3439 3440 ret = uverbs_response(attrs, &resp, sizeof(resp)); 3441 if (ret) 3442 goto err_copy; 3443 3444 if (cmd->srq_type == IB_SRQT_XRC) 3445 uobj_put_read(xrcd_uobj); 3446 3447 if (ib_srq_has_cq(cmd->srq_type)) 3448 uobj_put_obj_read(attr.ext.cq); 3449 3450 uobj_put_obj_read(pd); 3451 return uobj_alloc_commit(&obj->uevent.uobject); 3452 3453 err_copy: 3454 ib_destroy_srq(srq); 3455 3456 err_put: 3457 uobj_put_obj_read(pd); 3458 3459 err_put_cq: 3460 if (ib_srq_has_cq(cmd->srq_type)) 3461 uobj_put_obj_read(attr.ext.cq); 3462 3463 err_put_xrcd: 3464 if (cmd->srq_type == IB_SRQT_XRC) { 3465 atomic_dec(&obj->uxrcd->refcnt); 3466 uobj_put_read(xrcd_uobj); 3467 } 3468 3469 err: 3470 uobj_alloc_abort(&obj->uevent.uobject); 3471 return ret; 3472 } 3473 3474 static int ib_uverbs_create_srq(struct uverbs_attr_bundle *attrs) 3475 { 3476 struct ib_uverbs_create_srq cmd; 3477 struct ib_uverbs_create_xsrq xcmd; 3478 int ret; 3479 3480 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3481 if (ret) 3482 return ret; 3483 3484 memset(&xcmd, 0, sizeof(xcmd)); 3485 xcmd.response = cmd.response; 3486 xcmd.user_handle = cmd.user_handle; 3487 xcmd.srq_type = IB_SRQT_BASIC; 3488 xcmd.pd_handle = cmd.pd_handle; 3489 xcmd.max_wr = cmd.max_wr; 3490 xcmd.max_sge = cmd.max_sge; 3491 xcmd.srq_limit = cmd.srq_limit; 3492 3493 return __uverbs_create_xsrq(attrs, &xcmd, &attrs->driver_udata); 3494 } 3495 3496 static int ib_uverbs_create_xsrq(struct uverbs_attr_bundle *attrs) 3497 { 3498 struct ib_uverbs_create_xsrq cmd; 3499 int ret; 3500 3501 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3502 if (ret) 3503 return ret; 3504 3505 return __uverbs_create_xsrq(attrs, &cmd, &attrs->driver_udata); 3506 } 3507 3508 static int ib_uverbs_modify_srq(struct uverbs_attr_bundle *attrs) 3509 { 3510 struct ib_uverbs_modify_srq cmd; 3511 struct ib_srq *srq; 3512 struct ib_srq_attr attr; 3513 int ret; 3514 3515 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3516 if (ret) 3517 return ret; 3518 3519 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 3520 if (!srq) 3521 return -EINVAL; 3522 3523 attr.max_wr = cmd.max_wr; 3524 attr.srq_limit = cmd.srq_limit; 3525 3526 ret = srq->device->ops.modify_srq(srq, &attr, cmd.attr_mask, 3527 &attrs->driver_udata); 3528 3529 uobj_put_obj_read(srq); 3530 3531 return ret; 3532 } 3533 3534 static int ib_uverbs_query_srq(struct uverbs_attr_bundle *attrs) 3535 { 3536 struct ib_uverbs_query_srq cmd; 3537 struct ib_uverbs_query_srq_resp resp; 3538 struct ib_srq_attr attr; 3539 struct ib_srq *srq; 3540 int ret; 3541 3542 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3543 if (ret) 3544 return ret; 3545 3546 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 3547 if (!srq) 3548 return -EINVAL; 3549 3550 ret = ib_query_srq(srq, &attr); 3551 3552 uobj_put_obj_read(srq); 3553 3554 if (ret) 3555 return ret; 3556 3557 memset(&resp, 0, sizeof resp); 3558 3559 resp.max_wr = attr.max_wr; 3560 resp.max_sge = attr.max_sge; 3561 resp.srq_limit = attr.srq_limit; 3562 3563 return uverbs_response(attrs, &resp, sizeof(resp)); 3564 } 3565 3566 static int ib_uverbs_destroy_srq(struct uverbs_attr_bundle *attrs) 3567 { 3568 struct ib_uverbs_destroy_srq cmd; 3569 struct ib_uverbs_destroy_srq_resp resp; 3570 struct ib_uobject *uobj; 3571 struct ib_uevent_object *obj; 3572 int ret; 3573 3574 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3575 if (ret) 3576 return ret; 3577 3578 uobj = uobj_get_destroy(UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 3579 if (IS_ERR(uobj)) 3580 return PTR_ERR(uobj); 3581 3582 obj = container_of(uobj, struct ib_uevent_object, uobject); 3583 memset(&resp, 0, sizeof(resp)); 3584 resp.events_reported = obj->events_reported; 3585 3586 uobj_put_destroy(uobj); 3587 3588 return uverbs_response(attrs, &resp, sizeof(resp)); 3589 } 3590 3591 static int ib_uverbs_ex_query_device(struct uverbs_attr_bundle *attrs) 3592 { 3593 struct ib_uverbs_ex_query_device_resp resp = {}; 3594 struct ib_uverbs_ex_query_device cmd; 3595 struct ib_device_attr attr = {0}; 3596 struct ib_ucontext *ucontext; 3597 struct ib_device *ib_dev; 3598 int err; 3599 3600 ucontext = ib_uverbs_get_ucontext(attrs); 3601 if (IS_ERR(ucontext)) 3602 return PTR_ERR(ucontext); 3603 ib_dev = ucontext->device; 3604 3605 err = uverbs_request(attrs, &cmd, sizeof(cmd)); 3606 if (err) 3607 return err; 3608 3609 if (cmd.comp_mask) 3610 return -EINVAL; 3611 3612 if (cmd.reserved) 3613 return -EINVAL; 3614 3615 err = ib_dev->ops.query_device(ib_dev, &attr, &attrs->driver_udata); 3616 if (err) 3617 return err; 3618 3619 copy_query_dev_fields(ucontext, &resp.base, &attr); 3620 3621 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING 3622 resp.odp_caps.general_caps = attr.odp_caps.general_caps; 3623 resp.odp_caps.per_transport_caps.rc_odp_caps = 3624 attr.odp_caps.per_transport_caps.rc_odp_caps; 3625 resp.odp_caps.per_transport_caps.uc_odp_caps = 3626 attr.odp_caps.per_transport_caps.uc_odp_caps; 3627 resp.odp_caps.per_transport_caps.ud_odp_caps = 3628 attr.odp_caps.per_transport_caps.ud_odp_caps; 3629 #endif 3630 3631 resp.timestamp_mask = attr.timestamp_mask; 3632 resp.hca_core_clock = attr.hca_core_clock; 3633 resp.device_cap_flags_ex = attr.device_cap_flags; 3634 resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts; 3635 resp.rss_caps.max_rwq_indirection_tables = 3636 attr.rss_caps.max_rwq_indirection_tables; 3637 resp.rss_caps.max_rwq_indirection_table_size = 3638 attr.rss_caps.max_rwq_indirection_table_size; 3639 resp.max_wq_type_rq = attr.max_wq_type_rq; 3640 resp.raw_packet_caps = attr.raw_packet_caps; 3641 resp.tm_caps.max_rndv_hdr_size = attr.tm_caps.max_rndv_hdr_size; 3642 resp.tm_caps.max_num_tags = attr.tm_caps.max_num_tags; 3643 resp.tm_caps.max_ops = attr.tm_caps.max_ops; 3644 resp.tm_caps.max_sge = attr.tm_caps.max_sge; 3645 resp.tm_caps.flags = attr.tm_caps.flags; 3646 resp.cq_moderation_caps.max_cq_moderation_count = 3647 attr.cq_caps.max_cq_moderation_count; 3648 resp.cq_moderation_caps.max_cq_moderation_period = 3649 attr.cq_caps.max_cq_moderation_period; 3650 resp.max_dm_size = attr.max_dm_size; 3651 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 3652 3653 return uverbs_response(attrs, &resp, sizeof(resp)); 3654 } 3655 3656 static int ib_uverbs_ex_modify_cq(struct uverbs_attr_bundle *attrs) 3657 { 3658 struct ib_uverbs_ex_modify_cq cmd; 3659 struct ib_cq *cq; 3660 int ret; 3661 3662 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3663 if (ret) 3664 return ret; 3665 3666 if (!cmd.attr_mask || cmd.reserved) 3667 return -EINVAL; 3668 3669 if (cmd.attr_mask > IB_CQ_MODERATE) 3670 return -EOPNOTSUPP; 3671 3672 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 3673 if (!cq) 3674 return -EINVAL; 3675 3676 ret = rdma_set_cq_moderation(cq, cmd.attr.cq_count, cmd.attr.cq_period); 3677 3678 uobj_put_obj_read(cq); 3679 3680 return ret; 3681 } 3682 3683 /* 3684 * Describe the input structs for write(). Some write methods have an input 3685 * only struct, most have an input and output. If the struct has an output then 3686 * the 'response' u64 must be the first field in the request structure. 3687 * 3688 * If udata is present then both the request and response structs have a 3689 * trailing driver_data flex array. In this case the size of the base struct 3690 * cannot be changed. 3691 */ 3692 #define offsetof_after(_struct, _member) \ 3693 (offsetof(_struct, _member) + sizeof(((_struct *)NULL)->_member)) 3694 3695 #define UAPI_DEF_WRITE_IO(req, resp) \ 3696 .write.has_resp = 1 + \ 3697 BUILD_BUG_ON_ZERO(offsetof(req, response) != 0) + \ 3698 BUILD_BUG_ON_ZERO(sizeof(((req *)0)->response) != \ 3699 sizeof(u64)), \ 3700 .write.req_size = sizeof(req), .write.resp_size = sizeof(resp) 3701 3702 #define UAPI_DEF_WRITE_I(req) .write.req_size = sizeof(req) 3703 3704 #define UAPI_DEF_WRITE_UDATA_IO(req, resp) \ 3705 UAPI_DEF_WRITE_IO(req, resp), \ 3706 .write.has_udata = \ 3707 1 + \ 3708 BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \ 3709 sizeof(req)) + \ 3710 BUILD_BUG_ON_ZERO(offsetof(resp, driver_data) != \ 3711 sizeof(resp)) 3712 3713 #define UAPI_DEF_WRITE_UDATA_I(req) \ 3714 UAPI_DEF_WRITE_I(req), \ 3715 .write.has_udata = \ 3716 1 + BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \ 3717 sizeof(req)) 3718 3719 /* 3720 * The _EX versions are for use with WRITE_EX and allow the last struct member 3721 * to be specified. Buffers that do not include that member will be rejected. 3722 */ 3723 #define UAPI_DEF_WRITE_IO_EX(req, req_last_member, resp, resp_last_member) \ 3724 .write.has_resp = 1, \ 3725 .write.req_size = offsetof_after(req, req_last_member), \ 3726 .write.resp_size = offsetof_after(resp, resp_last_member) 3727 3728 #define UAPI_DEF_WRITE_I_EX(req, req_last_member) \ 3729 .write.req_size = offsetof_after(req, req_last_member) 3730 3731 const struct uapi_definition uverbs_def_write_intf[] = { 3732 DECLARE_UVERBS_OBJECT( 3733 UVERBS_OBJECT_AH, 3734 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_AH, 3735 ib_uverbs_create_ah, 3736 UAPI_DEF_WRITE_UDATA_IO( 3737 struct ib_uverbs_create_ah, 3738 struct ib_uverbs_create_ah_resp), 3739 UAPI_DEF_METHOD_NEEDS_FN(create_ah)), 3740 DECLARE_UVERBS_WRITE( 3741 IB_USER_VERBS_CMD_DESTROY_AH, 3742 ib_uverbs_destroy_ah, 3743 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_ah), 3744 UAPI_DEF_METHOD_NEEDS_FN(destroy_ah))), 3745 3746 DECLARE_UVERBS_OBJECT( 3747 UVERBS_OBJECT_COMP_CHANNEL, 3748 DECLARE_UVERBS_WRITE( 3749 IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL, 3750 ib_uverbs_create_comp_channel, 3751 UAPI_DEF_WRITE_IO( 3752 struct ib_uverbs_create_comp_channel, 3753 struct ib_uverbs_create_comp_channel_resp))), 3754 3755 DECLARE_UVERBS_OBJECT( 3756 UVERBS_OBJECT_CQ, 3757 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_CQ, 3758 ib_uverbs_create_cq, 3759 UAPI_DEF_WRITE_UDATA_IO( 3760 struct ib_uverbs_create_cq, 3761 struct ib_uverbs_create_cq_resp), 3762 UAPI_DEF_METHOD_NEEDS_FN(create_cq)), 3763 DECLARE_UVERBS_WRITE( 3764 IB_USER_VERBS_CMD_DESTROY_CQ, 3765 ib_uverbs_destroy_cq, 3766 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_cq, 3767 struct ib_uverbs_destroy_cq_resp), 3768 UAPI_DEF_METHOD_NEEDS_FN(destroy_cq)), 3769 DECLARE_UVERBS_WRITE( 3770 IB_USER_VERBS_CMD_POLL_CQ, 3771 ib_uverbs_poll_cq, 3772 UAPI_DEF_WRITE_IO(struct ib_uverbs_poll_cq, 3773 struct ib_uverbs_poll_cq_resp), 3774 UAPI_DEF_METHOD_NEEDS_FN(poll_cq)), 3775 DECLARE_UVERBS_WRITE( 3776 IB_USER_VERBS_CMD_REQ_NOTIFY_CQ, 3777 ib_uverbs_req_notify_cq, 3778 UAPI_DEF_WRITE_I(struct ib_uverbs_req_notify_cq), 3779 UAPI_DEF_METHOD_NEEDS_FN(req_notify_cq)), 3780 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_RESIZE_CQ, 3781 ib_uverbs_resize_cq, 3782 UAPI_DEF_WRITE_UDATA_IO( 3783 struct ib_uverbs_resize_cq, 3784 struct ib_uverbs_resize_cq_resp), 3785 UAPI_DEF_METHOD_NEEDS_FN(resize_cq)), 3786 DECLARE_UVERBS_WRITE_EX( 3787 IB_USER_VERBS_EX_CMD_CREATE_CQ, 3788 ib_uverbs_ex_create_cq, 3789 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_cq, 3790 reserved, 3791 struct ib_uverbs_ex_create_cq_resp, 3792 response_length), 3793 UAPI_DEF_METHOD_NEEDS_FN(create_cq)), 3794 DECLARE_UVERBS_WRITE_EX( 3795 IB_USER_VERBS_EX_CMD_MODIFY_CQ, 3796 ib_uverbs_ex_modify_cq, 3797 UAPI_DEF_WRITE_I(struct ib_uverbs_ex_modify_cq), 3798 UAPI_DEF_METHOD_NEEDS_FN(create_cq))), 3799 3800 DECLARE_UVERBS_OBJECT( 3801 UVERBS_OBJECT_DEVICE, 3802 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_GET_CONTEXT, 3803 ib_uverbs_get_context, 3804 UAPI_DEF_WRITE_UDATA_IO( 3805 struct ib_uverbs_get_context, 3806 struct ib_uverbs_get_context_resp)), 3807 DECLARE_UVERBS_WRITE( 3808 IB_USER_VERBS_CMD_QUERY_DEVICE, 3809 ib_uverbs_query_device, 3810 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_device, 3811 struct ib_uverbs_query_device_resp)), 3812 DECLARE_UVERBS_WRITE( 3813 IB_USER_VERBS_CMD_QUERY_PORT, 3814 ib_uverbs_query_port, 3815 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_port, 3816 struct ib_uverbs_query_port_resp), 3817 UAPI_DEF_METHOD_NEEDS_FN(query_port)), 3818 DECLARE_UVERBS_WRITE_EX( 3819 IB_USER_VERBS_EX_CMD_QUERY_DEVICE, 3820 ib_uverbs_ex_query_device, 3821 UAPI_DEF_WRITE_IO_EX( 3822 struct ib_uverbs_ex_query_device, 3823 reserved, 3824 struct ib_uverbs_ex_query_device_resp, 3825 response_length), 3826 UAPI_DEF_METHOD_NEEDS_FN(query_device)), 3827 UAPI_DEF_OBJ_NEEDS_FN(alloc_ucontext), 3828 UAPI_DEF_OBJ_NEEDS_FN(dealloc_ucontext)), 3829 3830 DECLARE_UVERBS_OBJECT( 3831 UVERBS_OBJECT_FLOW, 3832 DECLARE_UVERBS_WRITE_EX( 3833 IB_USER_VERBS_EX_CMD_CREATE_FLOW, 3834 ib_uverbs_ex_create_flow, 3835 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_create_flow, 3836 flow_attr, 3837 struct ib_uverbs_create_flow_resp, 3838 flow_handle), 3839 UAPI_DEF_METHOD_NEEDS_FN(create_flow)), 3840 DECLARE_UVERBS_WRITE_EX( 3841 IB_USER_VERBS_EX_CMD_DESTROY_FLOW, 3842 ib_uverbs_ex_destroy_flow, 3843 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_flow), 3844 UAPI_DEF_METHOD_NEEDS_FN(destroy_flow))), 3845 3846 DECLARE_UVERBS_OBJECT( 3847 UVERBS_OBJECT_MR, 3848 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_DEREG_MR, 3849 ib_uverbs_dereg_mr, 3850 UAPI_DEF_WRITE_I(struct ib_uverbs_dereg_mr), 3851 UAPI_DEF_METHOD_NEEDS_FN(dereg_mr)), 3852 DECLARE_UVERBS_WRITE( 3853 IB_USER_VERBS_CMD_REG_MR, 3854 ib_uverbs_reg_mr, 3855 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_reg_mr, 3856 struct ib_uverbs_reg_mr_resp), 3857 UAPI_DEF_METHOD_NEEDS_FN(reg_user_mr)), 3858 DECLARE_UVERBS_WRITE( 3859 IB_USER_VERBS_CMD_REREG_MR, 3860 ib_uverbs_rereg_mr, 3861 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_rereg_mr, 3862 struct ib_uverbs_rereg_mr_resp), 3863 UAPI_DEF_METHOD_NEEDS_FN(rereg_user_mr))), 3864 3865 DECLARE_UVERBS_OBJECT( 3866 UVERBS_OBJECT_MW, 3867 DECLARE_UVERBS_WRITE( 3868 IB_USER_VERBS_CMD_ALLOC_MW, 3869 ib_uverbs_alloc_mw, 3870 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_mw, 3871 struct ib_uverbs_alloc_mw_resp), 3872 UAPI_DEF_METHOD_NEEDS_FN(alloc_mw)), 3873 DECLARE_UVERBS_WRITE( 3874 IB_USER_VERBS_CMD_DEALLOC_MW, 3875 ib_uverbs_dealloc_mw, 3876 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_mw), 3877 UAPI_DEF_METHOD_NEEDS_FN(dealloc_mw))), 3878 3879 DECLARE_UVERBS_OBJECT( 3880 UVERBS_OBJECT_PD, 3881 DECLARE_UVERBS_WRITE( 3882 IB_USER_VERBS_CMD_ALLOC_PD, 3883 ib_uverbs_alloc_pd, 3884 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_pd, 3885 struct ib_uverbs_alloc_pd_resp), 3886 UAPI_DEF_METHOD_NEEDS_FN(alloc_pd)), 3887 DECLARE_UVERBS_WRITE( 3888 IB_USER_VERBS_CMD_DEALLOC_PD, 3889 ib_uverbs_dealloc_pd, 3890 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_pd), 3891 UAPI_DEF_METHOD_NEEDS_FN(dealloc_pd))), 3892 3893 DECLARE_UVERBS_OBJECT( 3894 UVERBS_OBJECT_QP, 3895 DECLARE_UVERBS_WRITE( 3896 IB_USER_VERBS_CMD_ATTACH_MCAST, 3897 ib_uverbs_attach_mcast, 3898 UAPI_DEF_WRITE_I(struct ib_uverbs_attach_mcast), 3899 UAPI_DEF_METHOD_NEEDS_FN(attach_mcast), 3900 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)), 3901 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_QP, 3902 ib_uverbs_create_qp, 3903 UAPI_DEF_WRITE_UDATA_IO( 3904 struct ib_uverbs_create_qp, 3905 struct ib_uverbs_create_qp_resp), 3906 UAPI_DEF_METHOD_NEEDS_FN(create_qp)), 3907 DECLARE_UVERBS_WRITE( 3908 IB_USER_VERBS_CMD_DESTROY_QP, 3909 ib_uverbs_destroy_qp, 3910 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_qp, 3911 struct ib_uverbs_destroy_qp_resp), 3912 UAPI_DEF_METHOD_NEEDS_FN(destroy_qp)), 3913 DECLARE_UVERBS_WRITE( 3914 IB_USER_VERBS_CMD_DETACH_MCAST, 3915 ib_uverbs_detach_mcast, 3916 UAPI_DEF_WRITE_I(struct ib_uverbs_detach_mcast), 3917 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)), 3918 DECLARE_UVERBS_WRITE( 3919 IB_USER_VERBS_CMD_MODIFY_QP, 3920 ib_uverbs_modify_qp, 3921 UAPI_DEF_WRITE_I(struct ib_uverbs_modify_qp), 3922 UAPI_DEF_METHOD_NEEDS_FN(modify_qp)), 3923 DECLARE_UVERBS_WRITE( 3924 IB_USER_VERBS_CMD_POST_RECV, 3925 ib_uverbs_post_recv, 3926 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_recv, 3927 struct ib_uverbs_post_recv_resp), 3928 UAPI_DEF_METHOD_NEEDS_FN(post_recv)), 3929 DECLARE_UVERBS_WRITE( 3930 IB_USER_VERBS_CMD_POST_SEND, 3931 ib_uverbs_post_send, 3932 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_send, 3933 struct ib_uverbs_post_send_resp), 3934 UAPI_DEF_METHOD_NEEDS_FN(post_send)), 3935 DECLARE_UVERBS_WRITE( 3936 IB_USER_VERBS_CMD_QUERY_QP, 3937 ib_uverbs_query_qp, 3938 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_qp, 3939 struct ib_uverbs_query_qp_resp), 3940 UAPI_DEF_METHOD_NEEDS_FN(query_qp)), 3941 DECLARE_UVERBS_WRITE_EX( 3942 IB_USER_VERBS_EX_CMD_CREATE_QP, 3943 ib_uverbs_ex_create_qp, 3944 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_qp, 3945 comp_mask, 3946 struct ib_uverbs_ex_create_qp_resp, 3947 response_length), 3948 UAPI_DEF_METHOD_NEEDS_FN(create_qp)), 3949 DECLARE_UVERBS_WRITE_EX( 3950 IB_USER_VERBS_EX_CMD_MODIFY_QP, 3951 ib_uverbs_ex_modify_qp, 3952 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_modify_qp, 3953 base, 3954 struct ib_uverbs_ex_modify_qp_resp, 3955 response_length), 3956 UAPI_DEF_METHOD_NEEDS_FN(modify_qp))), 3957 3958 DECLARE_UVERBS_OBJECT( 3959 UVERBS_OBJECT_RWQ_IND_TBL, 3960 DECLARE_UVERBS_WRITE_EX( 3961 IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL, 3962 ib_uverbs_ex_create_rwq_ind_table, 3963 UAPI_DEF_WRITE_IO_EX( 3964 struct ib_uverbs_ex_create_rwq_ind_table, 3965 log_ind_tbl_size, 3966 struct ib_uverbs_ex_create_rwq_ind_table_resp, 3967 ind_tbl_num), 3968 UAPI_DEF_METHOD_NEEDS_FN(create_rwq_ind_table)), 3969 DECLARE_UVERBS_WRITE_EX( 3970 IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL, 3971 ib_uverbs_ex_destroy_rwq_ind_table, 3972 UAPI_DEF_WRITE_I( 3973 struct ib_uverbs_ex_destroy_rwq_ind_table), 3974 UAPI_DEF_METHOD_NEEDS_FN(destroy_rwq_ind_table))), 3975 3976 DECLARE_UVERBS_OBJECT( 3977 UVERBS_OBJECT_WQ, 3978 DECLARE_UVERBS_WRITE_EX( 3979 IB_USER_VERBS_EX_CMD_CREATE_WQ, 3980 ib_uverbs_ex_create_wq, 3981 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_wq, 3982 max_sge, 3983 struct ib_uverbs_ex_create_wq_resp, 3984 wqn), 3985 UAPI_DEF_METHOD_NEEDS_FN(create_wq)), 3986 DECLARE_UVERBS_WRITE_EX( 3987 IB_USER_VERBS_EX_CMD_DESTROY_WQ, 3988 ib_uverbs_ex_destroy_wq, 3989 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_destroy_wq, 3990 wq_handle, 3991 struct ib_uverbs_ex_destroy_wq_resp, 3992 reserved), 3993 UAPI_DEF_METHOD_NEEDS_FN(destroy_wq)), 3994 DECLARE_UVERBS_WRITE_EX( 3995 IB_USER_VERBS_EX_CMD_MODIFY_WQ, 3996 ib_uverbs_ex_modify_wq, 3997 UAPI_DEF_WRITE_I_EX(struct ib_uverbs_ex_modify_wq, 3998 curr_wq_state), 3999 UAPI_DEF_METHOD_NEEDS_FN(modify_wq))), 4000 4001 DECLARE_UVERBS_OBJECT( 4002 UVERBS_OBJECT_SRQ, 4003 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_SRQ, 4004 ib_uverbs_create_srq, 4005 UAPI_DEF_WRITE_UDATA_IO( 4006 struct ib_uverbs_create_srq, 4007 struct ib_uverbs_create_srq_resp), 4008 UAPI_DEF_METHOD_NEEDS_FN(create_srq)), 4009 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_XSRQ, 4010 ib_uverbs_create_xsrq, 4011 UAPI_DEF_WRITE_UDATA_IO( 4012 struct ib_uverbs_create_xsrq, 4013 struct ib_uverbs_create_srq_resp), 4014 UAPI_DEF_METHOD_NEEDS_FN(create_srq)), 4015 DECLARE_UVERBS_WRITE( 4016 IB_USER_VERBS_CMD_DESTROY_SRQ, 4017 ib_uverbs_destroy_srq, 4018 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_srq, 4019 struct ib_uverbs_destroy_srq_resp), 4020 UAPI_DEF_METHOD_NEEDS_FN(destroy_srq)), 4021 DECLARE_UVERBS_WRITE( 4022 IB_USER_VERBS_CMD_MODIFY_SRQ, 4023 ib_uverbs_modify_srq, 4024 UAPI_DEF_WRITE_UDATA_I(struct ib_uverbs_modify_srq), 4025 UAPI_DEF_METHOD_NEEDS_FN(modify_srq)), 4026 DECLARE_UVERBS_WRITE( 4027 IB_USER_VERBS_CMD_POST_SRQ_RECV, 4028 ib_uverbs_post_srq_recv, 4029 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_srq_recv, 4030 struct ib_uverbs_post_srq_recv_resp), 4031 UAPI_DEF_METHOD_NEEDS_FN(post_srq_recv)), 4032 DECLARE_UVERBS_WRITE( 4033 IB_USER_VERBS_CMD_QUERY_SRQ, 4034 ib_uverbs_query_srq, 4035 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_srq, 4036 struct ib_uverbs_query_srq_resp), 4037 UAPI_DEF_METHOD_NEEDS_FN(query_srq))), 4038 4039 DECLARE_UVERBS_OBJECT( 4040 UVERBS_OBJECT_XRCD, 4041 DECLARE_UVERBS_WRITE( 4042 IB_USER_VERBS_CMD_CLOSE_XRCD, 4043 ib_uverbs_close_xrcd, 4044 UAPI_DEF_WRITE_I(struct ib_uverbs_close_xrcd), 4045 UAPI_DEF_METHOD_NEEDS_FN(dealloc_xrcd)), 4046 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_QP, 4047 ib_uverbs_open_qp, 4048 UAPI_DEF_WRITE_UDATA_IO( 4049 struct ib_uverbs_open_qp, 4050 struct ib_uverbs_create_qp_resp)), 4051 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_XRCD, 4052 ib_uverbs_open_xrcd, 4053 UAPI_DEF_WRITE_UDATA_IO( 4054 struct ib_uverbs_open_xrcd, 4055 struct ib_uverbs_open_xrcd_resp), 4056 UAPI_DEF_METHOD_NEEDS_FN(alloc_xrcd))), 4057 4058 {}, 4059 }; 4060