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 mutex_init(&ucontext->per_mm_list_lock); 242 INIT_LIST_HEAD(&ucontext->per_mm_list); 243 if (!(ib_dev->attrs.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING)) 244 ucontext->invalidate_range = NULL; 245 246 resp.num_comp_vectors = file->device->num_comp_vectors; 247 248 ret = get_unused_fd_flags(O_CLOEXEC); 249 if (ret < 0) 250 goto err_free; 251 resp.async_fd = ret; 252 253 filp = ib_uverbs_alloc_async_event_file(file, ib_dev); 254 if (IS_ERR(filp)) { 255 ret = PTR_ERR(filp); 256 goto err_fd; 257 } 258 259 ret = uverbs_response(attrs, &resp, sizeof(resp)); 260 if (ret) 261 goto err_file; 262 263 fd_install(resp.async_fd, filp); 264 265 ucontext->res.type = RDMA_RESTRACK_CTX; 266 rdma_restrack_uadd(&ucontext->res); 267 268 /* 269 * Make sure that ib_uverbs_get_ucontext() sees the pointer update 270 * only after all writes to setup the ucontext have completed 271 */ 272 smp_store_release(&file->ucontext, ucontext); 273 274 mutex_unlock(&file->ucontext_lock); 275 276 return 0; 277 278 err_file: 279 ib_uverbs_free_async_event_file(file); 280 fput(filp); 281 282 err_fd: 283 put_unused_fd(resp.async_fd); 284 285 err_free: 286 ib_dev->ops.dealloc_ucontext(ucontext); 287 288 err_alloc: 289 ib_rdmacg_uncharge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE); 290 291 err: 292 mutex_unlock(&file->ucontext_lock); 293 return ret; 294 } 295 296 static void copy_query_dev_fields(struct ib_ucontext *ucontext, 297 struct ib_uverbs_query_device_resp *resp, 298 struct ib_device_attr *attr) 299 { 300 struct ib_device *ib_dev = ucontext->device; 301 302 resp->fw_ver = attr->fw_ver; 303 resp->node_guid = ib_dev->node_guid; 304 resp->sys_image_guid = attr->sys_image_guid; 305 resp->max_mr_size = attr->max_mr_size; 306 resp->page_size_cap = attr->page_size_cap; 307 resp->vendor_id = attr->vendor_id; 308 resp->vendor_part_id = attr->vendor_part_id; 309 resp->hw_ver = attr->hw_ver; 310 resp->max_qp = attr->max_qp; 311 resp->max_qp_wr = attr->max_qp_wr; 312 resp->device_cap_flags = lower_32_bits(attr->device_cap_flags); 313 resp->max_sge = min(attr->max_send_sge, attr->max_recv_sge); 314 resp->max_sge_rd = attr->max_sge_rd; 315 resp->max_cq = attr->max_cq; 316 resp->max_cqe = attr->max_cqe; 317 resp->max_mr = attr->max_mr; 318 resp->max_pd = attr->max_pd; 319 resp->max_qp_rd_atom = attr->max_qp_rd_atom; 320 resp->max_ee_rd_atom = attr->max_ee_rd_atom; 321 resp->max_res_rd_atom = attr->max_res_rd_atom; 322 resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom; 323 resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom; 324 resp->atomic_cap = attr->atomic_cap; 325 resp->max_ee = attr->max_ee; 326 resp->max_rdd = attr->max_rdd; 327 resp->max_mw = attr->max_mw; 328 resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp; 329 resp->max_raw_ethy_qp = attr->max_raw_ethy_qp; 330 resp->max_mcast_grp = attr->max_mcast_grp; 331 resp->max_mcast_qp_attach = attr->max_mcast_qp_attach; 332 resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach; 333 resp->max_ah = attr->max_ah; 334 resp->max_fmr = attr->max_fmr; 335 resp->max_map_per_fmr = attr->max_map_per_fmr; 336 resp->max_srq = attr->max_srq; 337 resp->max_srq_wr = attr->max_srq_wr; 338 resp->max_srq_sge = attr->max_srq_sge; 339 resp->max_pkeys = attr->max_pkeys; 340 resp->local_ca_ack_delay = attr->local_ca_ack_delay; 341 resp->phys_port_cnt = ib_dev->phys_port_cnt; 342 } 343 344 static int ib_uverbs_query_device(struct uverbs_attr_bundle *attrs) 345 { 346 struct ib_uverbs_query_device cmd; 347 struct ib_uverbs_query_device_resp resp; 348 struct ib_ucontext *ucontext; 349 int ret; 350 351 ucontext = ib_uverbs_get_ucontext(attrs); 352 if (IS_ERR(ucontext)) 353 return PTR_ERR(ucontext); 354 355 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 356 if (ret) 357 return ret; 358 359 memset(&resp, 0, sizeof resp); 360 copy_query_dev_fields(ucontext, &resp, &ucontext->device->attrs); 361 362 return uverbs_response(attrs, &resp, sizeof(resp)); 363 } 364 365 static int ib_uverbs_query_port(struct uverbs_attr_bundle *attrs) 366 { 367 struct ib_uverbs_query_port cmd; 368 struct ib_uverbs_query_port_resp resp; 369 struct ib_port_attr attr; 370 int ret; 371 struct ib_ucontext *ucontext; 372 struct ib_device *ib_dev; 373 374 ucontext = ib_uverbs_get_ucontext(attrs); 375 if (IS_ERR(ucontext)) 376 return PTR_ERR(ucontext); 377 ib_dev = ucontext->device; 378 379 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 380 if (ret) 381 return ret; 382 383 ret = ib_query_port(ib_dev, cmd.port_num, &attr); 384 if (ret) 385 return ret; 386 387 memset(&resp, 0, sizeof resp); 388 copy_port_attr_to_resp(&attr, &resp, ib_dev, cmd.port_num); 389 390 return uverbs_response(attrs, &resp, sizeof(resp)); 391 } 392 393 static int ib_uverbs_alloc_pd(struct uverbs_attr_bundle *attrs) 394 { 395 struct ib_uverbs_alloc_pd cmd; 396 struct ib_uverbs_alloc_pd_resp resp; 397 struct ib_uobject *uobj; 398 struct ib_pd *pd; 399 int ret; 400 struct ib_device *ib_dev; 401 402 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 403 if (ret) 404 return ret; 405 406 uobj = uobj_alloc(UVERBS_OBJECT_PD, attrs, &ib_dev); 407 if (IS_ERR(uobj)) 408 return PTR_ERR(uobj); 409 410 pd = rdma_zalloc_drv_obj(ib_dev, ib_pd); 411 if (!pd) { 412 ret = -ENOMEM; 413 goto err; 414 } 415 416 pd->device = ib_dev; 417 pd->uobject = uobj; 418 pd->__internal_mr = NULL; 419 atomic_set(&pd->usecnt, 0); 420 pd->res.type = RDMA_RESTRACK_PD; 421 422 ret = ib_dev->ops.alloc_pd(pd, uobj->context, &attrs->driver_udata); 423 if (ret) 424 goto err_alloc; 425 426 uobj->object = pd; 427 memset(&resp, 0, sizeof resp); 428 resp.pd_handle = uobj->id; 429 rdma_restrack_uadd(&pd->res); 430 431 ret = uverbs_response(attrs, &resp, sizeof(resp)); 432 if (ret) 433 goto err_copy; 434 435 return uobj_alloc_commit(uobj); 436 437 err_copy: 438 ib_dealloc_pd(pd); 439 err_alloc: 440 kfree(pd); 441 err: 442 uobj_alloc_abort(uobj); 443 return ret; 444 } 445 446 static int ib_uverbs_dealloc_pd(struct uverbs_attr_bundle *attrs) 447 { 448 struct ib_uverbs_dealloc_pd cmd; 449 int ret; 450 451 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 452 if (ret) 453 return ret; 454 455 return uobj_perform_destroy(UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 456 } 457 458 struct xrcd_table_entry { 459 struct rb_node node; 460 struct ib_xrcd *xrcd; 461 struct inode *inode; 462 }; 463 464 static int xrcd_table_insert(struct ib_uverbs_device *dev, 465 struct inode *inode, 466 struct ib_xrcd *xrcd) 467 { 468 struct xrcd_table_entry *entry, *scan; 469 struct rb_node **p = &dev->xrcd_tree.rb_node; 470 struct rb_node *parent = NULL; 471 472 entry = kmalloc(sizeof *entry, GFP_KERNEL); 473 if (!entry) 474 return -ENOMEM; 475 476 entry->xrcd = xrcd; 477 entry->inode = inode; 478 479 while (*p) { 480 parent = *p; 481 scan = rb_entry(parent, struct xrcd_table_entry, node); 482 483 if (inode < scan->inode) { 484 p = &(*p)->rb_left; 485 } else if (inode > scan->inode) { 486 p = &(*p)->rb_right; 487 } else { 488 kfree(entry); 489 return -EEXIST; 490 } 491 } 492 493 rb_link_node(&entry->node, parent, p); 494 rb_insert_color(&entry->node, &dev->xrcd_tree); 495 igrab(inode); 496 return 0; 497 } 498 499 static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev, 500 struct inode *inode) 501 { 502 struct xrcd_table_entry *entry; 503 struct rb_node *p = dev->xrcd_tree.rb_node; 504 505 while (p) { 506 entry = rb_entry(p, struct xrcd_table_entry, node); 507 508 if (inode < entry->inode) 509 p = p->rb_left; 510 else if (inode > entry->inode) 511 p = p->rb_right; 512 else 513 return entry; 514 } 515 516 return NULL; 517 } 518 519 static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode) 520 { 521 struct xrcd_table_entry *entry; 522 523 entry = xrcd_table_search(dev, inode); 524 if (!entry) 525 return NULL; 526 527 return entry->xrcd; 528 } 529 530 static void xrcd_table_delete(struct ib_uverbs_device *dev, 531 struct inode *inode) 532 { 533 struct xrcd_table_entry *entry; 534 535 entry = xrcd_table_search(dev, inode); 536 if (entry) { 537 iput(inode); 538 rb_erase(&entry->node, &dev->xrcd_tree); 539 kfree(entry); 540 } 541 } 542 543 static int ib_uverbs_open_xrcd(struct uverbs_attr_bundle *attrs) 544 { 545 struct ib_uverbs_device *ibudev = attrs->ufile->device; 546 struct ib_uverbs_open_xrcd cmd; 547 struct ib_uverbs_open_xrcd_resp resp; 548 struct ib_uxrcd_object *obj; 549 struct ib_xrcd *xrcd = NULL; 550 struct fd f = {NULL, 0}; 551 struct inode *inode = NULL; 552 int ret = 0; 553 int new_xrcd = 0; 554 struct ib_device *ib_dev; 555 556 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 557 if (ret) 558 return ret; 559 560 mutex_lock(&ibudev->xrcd_tree_mutex); 561 562 if (cmd.fd != -1) { 563 /* search for file descriptor */ 564 f = fdget(cmd.fd); 565 if (!f.file) { 566 ret = -EBADF; 567 goto err_tree_mutex_unlock; 568 } 569 570 inode = file_inode(f.file); 571 xrcd = find_xrcd(ibudev, inode); 572 if (!xrcd && !(cmd.oflags & O_CREAT)) { 573 /* no file descriptor. Need CREATE flag */ 574 ret = -EAGAIN; 575 goto err_tree_mutex_unlock; 576 } 577 578 if (xrcd && cmd.oflags & O_EXCL) { 579 ret = -EINVAL; 580 goto err_tree_mutex_unlock; 581 } 582 } 583 584 obj = (struct ib_uxrcd_object *)uobj_alloc(UVERBS_OBJECT_XRCD, attrs, 585 &ib_dev); 586 if (IS_ERR(obj)) { 587 ret = PTR_ERR(obj); 588 goto err_tree_mutex_unlock; 589 } 590 591 if (!xrcd) { 592 xrcd = ib_dev->ops.alloc_xrcd(ib_dev, obj->uobject.context, 593 &attrs->driver_udata); 594 if (IS_ERR(xrcd)) { 595 ret = PTR_ERR(xrcd); 596 goto err; 597 } 598 599 xrcd->inode = inode; 600 xrcd->device = ib_dev; 601 atomic_set(&xrcd->usecnt, 0); 602 mutex_init(&xrcd->tgt_qp_mutex); 603 INIT_LIST_HEAD(&xrcd->tgt_qp_list); 604 new_xrcd = 1; 605 } 606 607 atomic_set(&obj->refcnt, 0); 608 obj->uobject.object = xrcd; 609 memset(&resp, 0, sizeof resp); 610 resp.xrcd_handle = obj->uobject.id; 611 612 if (inode) { 613 if (new_xrcd) { 614 /* create new inode/xrcd table entry */ 615 ret = xrcd_table_insert(ibudev, inode, xrcd); 616 if (ret) 617 goto err_dealloc_xrcd; 618 } 619 atomic_inc(&xrcd->usecnt); 620 } 621 622 ret = uverbs_response(attrs, &resp, sizeof(resp)); 623 if (ret) 624 goto err_copy; 625 626 if (f.file) 627 fdput(f); 628 629 mutex_unlock(&ibudev->xrcd_tree_mutex); 630 631 return uobj_alloc_commit(&obj->uobject); 632 633 err_copy: 634 if (inode) { 635 if (new_xrcd) 636 xrcd_table_delete(ibudev, inode); 637 atomic_dec(&xrcd->usecnt); 638 } 639 640 err_dealloc_xrcd: 641 ib_dealloc_xrcd(xrcd); 642 643 err: 644 uobj_alloc_abort(&obj->uobject); 645 646 err_tree_mutex_unlock: 647 if (f.file) 648 fdput(f); 649 650 mutex_unlock(&ibudev->xrcd_tree_mutex); 651 652 return ret; 653 } 654 655 static int ib_uverbs_close_xrcd(struct uverbs_attr_bundle *attrs) 656 { 657 struct ib_uverbs_close_xrcd cmd; 658 int ret; 659 660 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 661 if (ret) 662 return ret; 663 664 return uobj_perform_destroy(UVERBS_OBJECT_XRCD, cmd.xrcd_handle, attrs); 665 } 666 667 int ib_uverbs_dealloc_xrcd(struct ib_uobject *uobject, 668 struct ib_xrcd *xrcd, 669 enum rdma_remove_reason why) 670 { 671 struct inode *inode; 672 int ret; 673 struct ib_uverbs_device *dev = uobject->context->ufile->device; 674 675 inode = xrcd->inode; 676 if (inode && !atomic_dec_and_test(&xrcd->usecnt)) 677 return 0; 678 679 ret = ib_dealloc_xrcd(xrcd); 680 681 if (ib_is_destroy_retryable(ret, why, uobject)) { 682 atomic_inc(&xrcd->usecnt); 683 return ret; 684 } 685 686 if (inode) 687 xrcd_table_delete(dev, inode); 688 689 return ret; 690 } 691 692 static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs) 693 { 694 struct ib_uverbs_reg_mr cmd; 695 struct ib_uverbs_reg_mr_resp resp; 696 struct ib_uobject *uobj; 697 struct ib_pd *pd; 698 struct ib_mr *mr; 699 int ret; 700 struct ib_device *ib_dev; 701 702 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 703 if (ret) 704 return ret; 705 706 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) 707 return -EINVAL; 708 709 ret = ib_check_mr_access(cmd.access_flags); 710 if (ret) 711 return ret; 712 713 uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev); 714 if (IS_ERR(uobj)) 715 return PTR_ERR(uobj); 716 717 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 718 if (!pd) { 719 ret = -EINVAL; 720 goto err_free; 721 } 722 723 if (cmd.access_flags & IB_ACCESS_ON_DEMAND) { 724 if (!(pd->device->attrs.device_cap_flags & 725 IB_DEVICE_ON_DEMAND_PAGING)) { 726 pr_debug("ODP support not available\n"); 727 ret = -EINVAL; 728 goto err_put; 729 } 730 } 731 732 mr = pd->device->ops.reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, 733 cmd.access_flags, 734 &attrs->driver_udata); 735 if (IS_ERR(mr)) { 736 ret = PTR_ERR(mr); 737 goto err_put; 738 } 739 740 mr->device = pd->device; 741 mr->pd = pd; 742 mr->dm = NULL; 743 mr->uobject = uobj; 744 atomic_inc(&pd->usecnt); 745 mr->res.type = RDMA_RESTRACK_MR; 746 rdma_restrack_uadd(&mr->res); 747 748 uobj->object = mr; 749 750 memset(&resp, 0, sizeof resp); 751 resp.lkey = mr->lkey; 752 resp.rkey = mr->rkey; 753 resp.mr_handle = uobj->id; 754 755 ret = uverbs_response(attrs, &resp, sizeof(resp)); 756 if (ret) 757 goto err_copy; 758 759 uobj_put_obj_read(pd); 760 761 return uobj_alloc_commit(uobj); 762 763 err_copy: 764 ib_dereg_mr(mr); 765 766 err_put: 767 uobj_put_obj_read(pd); 768 769 err_free: 770 uobj_alloc_abort(uobj); 771 return ret; 772 } 773 774 static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs) 775 { 776 struct ib_uverbs_rereg_mr cmd; 777 struct ib_uverbs_rereg_mr_resp resp; 778 struct ib_pd *pd = NULL; 779 struct ib_mr *mr; 780 struct ib_pd *old_pd; 781 int ret; 782 struct ib_uobject *uobj; 783 784 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 785 if (ret) 786 return ret; 787 788 if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags) 789 return -EINVAL; 790 791 if ((cmd.flags & IB_MR_REREG_TRANS) && 792 (!cmd.start || !cmd.hca_va || 0 >= cmd.length || 793 (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))) 794 return -EINVAL; 795 796 uobj = uobj_get_write(UVERBS_OBJECT_MR, cmd.mr_handle, attrs); 797 if (IS_ERR(uobj)) 798 return PTR_ERR(uobj); 799 800 mr = uobj->object; 801 802 if (mr->dm) { 803 ret = -EINVAL; 804 goto put_uobjs; 805 } 806 807 if (cmd.flags & IB_MR_REREG_ACCESS) { 808 ret = ib_check_mr_access(cmd.access_flags); 809 if (ret) 810 goto put_uobjs; 811 } 812 813 if (cmd.flags & IB_MR_REREG_PD) { 814 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, 815 attrs); 816 if (!pd) { 817 ret = -EINVAL; 818 goto put_uobjs; 819 } 820 } 821 822 old_pd = mr->pd; 823 ret = mr->device->ops.rereg_user_mr(mr, cmd.flags, cmd.start, 824 cmd.length, cmd.hca_va, 825 cmd.access_flags, pd, 826 &attrs->driver_udata); 827 if (!ret) { 828 if (cmd.flags & IB_MR_REREG_PD) { 829 atomic_inc(&pd->usecnt); 830 mr->pd = pd; 831 atomic_dec(&old_pd->usecnt); 832 } 833 } else { 834 goto put_uobj_pd; 835 } 836 837 memset(&resp, 0, sizeof(resp)); 838 resp.lkey = mr->lkey; 839 resp.rkey = mr->rkey; 840 841 ret = uverbs_response(attrs, &resp, sizeof(resp)); 842 843 put_uobj_pd: 844 if (cmd.flags & IB_MR_REREG_PD) 845 uobj_put_obj_read(pd); 846 847 put_uobjs: 848 uobj_put_write(uobj); 849 850 return ret; 851 } 852 853 static int ib_uverbs_dereg_mr(struct uverbs_attr_bundle *attrs) 854 { 855 struct ib_uverbs_dereg_mr cmd; 856 int ret; 857 858 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 859 if (ret) 860 return ret; 861 862 return uobj_perform_destroy(UVERBS_OBJECT_MR, cmd.mr_handle, attrs); 863 } 864 865 static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs) 866 { 867 struct ib_uverbs_alloc_mw cmd; 868 struct ib_uverbs_alloc_mw_resp resp; 869 struct ib_uobject *uobj; 870 struct ib_pd *pd; 871 struct ib_mw *mw; 872 int ret; 873 struct ib_device *ib_dev; 874 875 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 876 if (ret) 877 return ret; 878 879 uobj = uobj_alloc(UVERBS_OBJECT_MW, attrs, &ib_dev); 880 if (IS_ERR(uobj)) 881 return PTR_ERR(uobj); 882 883 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 884 if (!pd) { 885 ret = -EINVAL; 886 goto err_free; 887 } 888 889 mw = pd->device->ops.alloc_mw(pd, cmd.mw_type, &attrs->driver_udata); 890 if (IS_ERR(mw)) { 891 ret = PTR_ERR(mw); 892 goto err_put; 893 } 894 895 mw->device = pd->device; 896 mw->pd = pd; 897 mw->uobject = uobj; 898 atomic_inc(&pd->usecnt); 899 900 uobj->object = mw; 901 902 memset(&resp, 0, sizeof(resp)); 903 resp.rkey = mw->rkey; 904 resp.mw_handle = uobj->id; 905 906 ret = uverbs_response(attrs, &resp, sizeof(resp)); 907 if (ret) 908 goto err_copy; 909 910 uobj_put_obj_read(pd); 911 return uobj_alloc_commit(uobj); 912 913 err_copy: 914 uverbs_dealloc_mw(mw); 915 err_put: 916 uobj_put_obj_read(pd); 917 err_free: 918 uobj_alloc_abort(uobj); 919 return ret; 920 } 921 922 static int ib_uverbs_dealloc_mw(struct uverbs_attr_bundle *attrs) 923 { 924 struct ib_uverbs_dealloc_mw cmd; 925 int ret; 926 927 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 928 if (ret) 929 return ret; 930 931 return uobj_perform_destroy(UVERBS_OBJECT_MW, cmd.mw_handle, attrs); 932 } 933 934 static int ib_uverbs_create_comp_channel(struct uverbs_attr_bundle *attrs) 935 { 936 struct ib_uverbs_create_comp_channel cmd; 937 struct ib_uverbs_create_comp_channel_resp resp; 938 struct ib_uobject *uobj; 939 struct ib_uverbs_completion_event_file *ev_file; 940 struct ib_device *ib_dev; 941 int ret; 942 943 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 944 if (ret) 945 return ret; 946 947 uobj = uobj_alloc(UVERBS_OBJECT_COMP_CHANNEL, attrs, &ib_dev); 948 if (IS_ERR(uobj)) 949 return PTR_ERR(uobj); 950 951 resp.fd = uobj->id; 952 953 ev_file = container_of(uobj, struct ib_uverbs_completion_event_file, 954 uobj); 955 ib_uverbs_init_event_queue(&ev_file->ev_queue); 956 957 ret = uverbs_response(attrs, &resp, sizeof(resp)); 958 if (ret) { 959 uobj_alloc_abort(uobj); 960 return ret; 961 } 962 963 return uobj_alloc_commit(uobj); 964 } 965 966 static struct ib_ucq_object *create_cq(struct uverbs_attr_bundle *attrs, 967 struct ib_uverbs_ex_create_cq *cmd) 968 { 969 struct ib_ucq_object *obj; 970 struct ib_uverbs_completion_event_file *ev_file = NULL; 971 struct ib_cq *cq; 972 int ret; 973 struct ib_uverbs_ex_create_cq_resp resp; 974 struct ib_cq_init_attr attr = {}; 975 struct ib_device *ib_dev; 976 977 if (cmd->comp_vector >= attrs->ufile->device->num_comp_vectors) 978 return ERR_PTR(-EINVAL); 979 980 obj = (struct ib_ucq_object *)uobj_alloc(UVERBS_OBJECT_CQ, attrs, 981 &ib_dev); 982 if (IS_ERR(obj)) 983 return obj; 984 985 if (cmd->comp_channel >= 0) { 986 ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel, attrs); 987 if (IS_ERR(ev_file)) { 988 ret = PTR_ERR(ev_file); 989 goto err; 990 } 991 } 992 993 obj->uobject.user_handle = cmd->user_handle; 994 obj->comp_events_reported = 0; 995 obj->async_events_reported = 0; 996 INIT_LIST_HEAD(&obj->comp_list); 997 INIT_LIST_HEAD(&obj->async_list); 998 999 attr.cqe = cmd->cqe; 1000 attr.comp_vector = cmd->comp_vector; 1001 attr.flags = cmd->flags; 1002 1003 cq = ib_dev->ops.create_cq(ib_dev, &attr, obj->uobject.context, 1004 &attrs->driver_udata); 1005 if (IS_ERR(cq)) { 1006 ret = PTR_ERR(cq); 1007 goto err_file; 1008 } 1009 1010 cq->device = ib_dev; 1011 cq->uobject = &obj->uobject; 1012 cq->comp_handler = ib_uverbs_comp_handler; 1013 cq->event_handler = ib_uverbs_cq_event_handler; 1014 cq->cq_context = ev_file ? &ev_file->ev_queue : NULL; 1015 atomic_set(&cq->usecnt, 0); 1016 1017 obj->uobject.object = cq; 1018 memset(&resp, 0, sizeof resp); 1019 resp.base.cq_handle = obj->uobject.id; 1020 resp.base.cqe = cq->cqe; 1021 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 1022 1023 cq->res.type = RDMA_RESTRACK_CQ; 1024 rdma_restrack_uadd(&cq->res); 1025 1026 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1027 if (ret) 1028 goto err_cb; 1029 1030 ret = uobj_alloc_commit(&obj->uobject); 1031 if (ret) 1032 return ERR_PTR(ret); 1033 return obj; 1034 1035 err_cb: 1036 ib_destroy_cq(cq); 1037 1038 err_file: 1039 if (ev_file) 1040 ib_uverbs_release_ucq(attrs->ufile, ev_file, obj); 1041 1042 err: 1043 uobj_alloc_abort(&obj->uobject); 1044 1045 return ERR_PTR(ret); 1046 } 1047 1048 static int ib_uverbs_create_cq(struct uverbs_attr_bundle *attrs) 1049 { 1050 struct ib_uverbs_create_cq cmd; 1051 struct ib_uverbs_ex_create_cq cmd_ex; 1052 struct ib_ucq_object *obj; 1053 int ret; 1054 1055 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1056 if (ret) 1057 return ret; 1058 1059 memset(&cmd_ex, 0, sizeof(cmd_ex)); 1060 cmd_ex.user_handle = cmd.user_handle; 1061 cmd_ex.cqe = cmd.cqe; 1062 cmd_ex.comp_vector = cmd.comp_vector; 1063 cmd_ex.comp_channel = cmd.comp_channel; 1064 1065 obj = create_cq(attrs, &cmd_ex); 1066 return PTR_ERR_OR_ZERO(obj); 1067 } 1068 1069 static int ib_uverbs_ex_create_cq(struct uverbs_attr_bundle *attrs) 1070 { 1071 struct ib_uverbs_ex_create_cq cmd; 1072 struct ib_ucq_object *obj; 1073 int ret; 1074 1075 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1076 if (ret) 1077 return ret; 1078 1079 if (cmd.comp_mask) 1080 return -EINVAL; 1081 1082 if (cmd.reserved) 1083 return -EINVAL; 1084 1085 obj = create_cq(attrs, &cmd); 1086 return PTR_ERR_OR_ZERO(obj); 1087 } 1088 1089 static int ib_uverbs_resize_cq(struct uverbs_attr_bundle *attrs) 1090 { 1091 struct ib_uverbs_resize_cq cmd; 1092 struct ib_uverbs_resize_cq_resp resp = {}; 1093 struct ib_cq *cq; 1094 int ret = -EINVAL; 1095 1096 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1097 if (ret) 1098 return ret; 1099 1100 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1101 if (!cq) 1102 return -EINVAL; 1103 1104 ret = cq->device->ops.resize_cq(cq, cmd.cqe, &attrs->driver_udata); 1105 if (ret) 1106 goto out; 1107 1108 resp.cqe = cq->cqe; 1109 1110 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1111 out: 1112 uobj_put_obj_read(cq); 1113 1114 return ret; 1115 } 1116 1117 static int copy_wc_to_user(struct ib_device *ib_dev, void __user *dest, 1118 struct ib_wc *wc) 1119 { 1120 struct ib_uverbs_wc tmp; 1121 1122 tmp.wr_id = wc->wr_id; 1123 tmp.status = wc->status; 1124 tmp.opcode = wc->opcode; 1125 tmp.vendor_err = wc->vendor_err; 1126 tmp.byte_len = wc->byte_len; 1127 tmp.ex.imm_data = wc->ex.imm_data; 1128 tmp.qp_num = wc->qp->qp_num; 1129 tmp.src_qp = wc->src_qp; 1130 tmp.wc_flags = wc->wc_flags; 1131 tmp.pkey_index = wc->pkey_index; 1132 if (rdma_cap_opa_ah(ib_dev, wc->port_num)) 1133 tmp.slid = OPA_TO_IB_UCAST_LID(wc->slid); 1134 else 1135 tmp.slid = ib_lid_cpu16(wc->slid); 1136 tmp.sl = wc->sl; 1137 tmp.dlid_path_bits = wc->dlid_path_bits; 1138 tmp.port_num = wc->port_num; 1139 tmp.reserved = 0; 1140 1141 if (copy_to_user(dest, &tmp, sizeof tmp)) 1142 return -EFAULT; 1143 1144 return 0; 1145 } 1146 1147 static int ib_uverbs_poll_cq(struct uverbs_attr_bundle *attrs) 1148 { 1149 struct ib_uverbs_poll_cq cmd; 1150 struct ib_uverbs_poll_cq_resp resp; 1151 u8 __user *header_ptr; 1152 u8 __user *data_ptr; 1153 struct ib_cq *cq; 1154 struct ib_wc wc; 1155 int ret; 1156 1157 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1158 if (ret) 1159 return ret; 1160 1161 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1162 if (!cq) 1163 return -EINVAL; 1164 1165 /* we copy a struct ib_uverbs_poll_cq_resp to user space */ 1166 header_ptr = attrs->ucore.outbuf; 1167 data_ptr = header_ptr + sizeof resp; 1168 1169 memset(&resp, 0, sizeof resp); 1170 while (resp.count < cmd.ne) { 1171 ret = ib_poll_cq(cq, 1, &wc); 1172 if (ret < 0) 1173 goto out_put; 1174 if (!ret) 1175 break; 1176 1177 ret = copy_wc_to_user(cq->device, data_ptr, &wc); 1178 if (ret) 1179 goto out_put; 1180 1181 data_ptr += sizeof(struct ib_uverbs_wc); 1182 ++resp.count; 1183 } 1184 1185 if (copy_to_user(header_ptr, &resp, sizeof resp)) { 1186 ret = -EFAULT; 1187 goto out_put; 1188 } 1189 1190 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT)) 1191 ret = uverbs_output_written(attrs, UVERBS_ATTR_CORE_OUT); 1192 1193 ret = 0; 1194 1195 out_put: 1196 uobj_put_obj_read(cq); 1197 return ret; 1198 } 1199 1200 static int ib_uverbs_req_notify_cq(struct uverbs_attr_bundle *attrs) 1201 { 1202 struct ib_uverbs_req_notify_cq cmd; 1203 struct ib_cq *cq; 1204 int ret; 1205 1206 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1207 if (ret) 1208 return ret; 1209 1210 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1211 if (!cq) 1212 return -EINVAL; 1213 1214 ib_req_notify_cq(cq, cmd.solicited_only ? 1215 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); 1216 1217 uobj_put_obj_read(cq); 1218 1219 return 0; 1220 } 1221 1222 static int ib_uverbs_destroy_cq(struct uverbs_attr_bundle *attrs) 1223 { 1224 struct ib_uverbs_destroy_cq cmd; 1225 struct ib_uverbs_destroy_cq_resp resp; 1226 struct ib_uobject *uobj; 1227 struct ib_ucq_object *obj; 1228 int ret; 1229 1230 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1231 if (ret) 1232 return ret; 1233 1234 uobj = uobj_get_destroy(UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1235 if (IS_ERR(uobj)) 1236 return PTR_ERR(uobj); 1237 1238 obj = container_of(uobj, struct ib_ucq_object, uobject); 1239 memset(&resp, 0, sizeof(resp)); 1240 resp.comp_events_reported = obj->comp_events_reported; 1241 resp.async_events_reported = obj->async_events_reported; 1242 1243 uobj_put_destroy(uobj); 1244 1245 return uverbs_response(attrs, &resp, sizeof(resp)); 1246 } 1247 1248 static int create_qp(struct uverbs_attr_bundle *attrs, 1249 struct ib_uverbs_ex_create_qp *cmd) 1250 { 1251 struct ib_uqp_object *obj; 1252 struct ib_device *device; 1253 struct ib_pd *pd = NULL; 1254 struct ib_xrcd *xrcd = NULL; 1255 struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT); 1256 struct ib_cq *scq = NULL, *rcq = NULL; 1257 struct ib_srq *srq = NULL; 1258 struct ib_qp *qp; 1259 struct ib_qp_init_attr attr = {}; 1260 struct ib_uverbs_ex_create_qp_resp resp; 1261 int ret; 1262 struct ib_rwq_ind_table *ind_tbl = NULL; 1263 bool has_sq = true; 1264 struct ib_device *ib_dev; 1265 1266 if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW)) 1267 return -EPERM; 1268 1269 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs, 1270 &ib_dev); 1271 if (IS_ERR(obj)) 1272 return PTR_ERR(obj); 1273 obj->uxrcd = NULL; 1274 obj->uevent.uobject.user_handle = cmd->user_handle; 1275 mutex_init(&obj->mcast_lock); 1276 1277 if (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE) { 1278 ind_tbl = uobj_get_obj_read(rwq_ind_table, 1279 UVERBS_OBJECT_RWQ_IND_TBL, 1280 cmd->rwq_ind_tbl_handle, attrs); 1281 if (!ind_tbl) { 1282 ret = -EINVAL; 1283 goto err_put; 1284 } 1285 1286 attr.rwq_ind_tbl = ind_tbl; 1287 } 1288 1289 if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) { 1290 ret = -EINVAL; 1291 goto err_put; 1292 } 1293 1294 if (ind_tbl && !cmd->max_send_wr) 1295 has_sq = false; 1296 1297 if (cmd->qp_type == IB_QPT_XRC_TGT) { 1298 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->pd_handle, 1299 attrs); 1300 1301 if (IS_ERR(xrcd_uobj)) { 1302 ret = -EINVAL; 1303 goto err_put; 1304 } 1305 1306 xrcd = (struct ib_xrcd *)xrcd_uobj->object; 1307 if (!xrcd) { 1308 ret = -EINVAL; 1309 goto err_put; 1310 } 1311 device = xrcd->device; 1312 } else { 1313 if (cmd->qp_type == IB_QPT_XRC_INI) { 1314 cmd->max_recv_wr = 0; 1315 cmd->max_recv_sge = 0; 1316 } else { 1317 if (cmd->is_srq) { 1318 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, 1319 cmd->srq_handle, attrs); 1320 if (!srq || srq->srq_type == IB_SRQT_XRC) { 1321 ret = -EINVAL; 1322 goto err_put; 1323 } 1324 } 1325 1326 if (!ind_tbl) { 1327 if (cmd->recv_cq_handle != cmd->send_cq_handle) { 1328 rcq = uobj_get_obj_read( 1329 cq, UVERBS_OBJECT_CQ, 1330 cmd->recv_cq_handle, attrs); 1331 if (!rcq) { 1332 ret = -EINVAL; 1333 goto err_put; 1334 } 1335 } 1336 } 1337 } 1338 1339 if (has_sq) 1340 scq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, 1341 cmd->send_cq_handle, attrs); 1342 if (!ind_tbl) 1343 rcq = rcq ?: scq; 1344 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, 1345 attrs); 1346 if (!pd || (!scq && has_sq)) { 1347 ret = -EINVAL; 1348 goto err_put; 1349 } 1350 1351 device = pd->device; 1352 } 1353 1354 attr.event_handler = ib_uverbs_qp_event_handler; 1355 attr.qp_context = attrs->ufile; 1356 attr.send_cq = scq; 1357 attr.recv_cq = rcq; 1358 attr.srq = srq; 1359 attr.xrcd = xrcd; 1360 attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR : 1361 IB_SIGNAL_REQ_WR; 1362 attr.qp_type = cmd->qp_type; 1363 attr.create_flags = 0; 1364 1365 attr.cap.max_send_wr = cmd->max_send_wr; 1366 attr.cap.max_recv_wr = cmd->max_recv_wr; 1367 attr.cap.max_send_sge = cmd->max_send_sge; 1368 attr.cap.max_recv_sge = cmd->max_recv_sge; 1369 attr.cap.max_inline_data = cmd->max_inline_data; 1370 1371 obj->uevent.events_reported = 0; 1372 INIT_LIST_HEAD(&obj->uevent.event_list); 1373 INIT_LIST_HEAD(&obj->mcast_list); 1374 1375 attr.create_flags = cmd->create_flags; 1376 if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK | 1377 IB_QP_CREATE_CROSS_CHANNEL | 1378 IB_QP_CREATE_MANAGED_SEND | 1379 IB_QP_CREATE_MANAGED_RECV | 1380 IB_QP_CREATE_SCATTER_FCS | 1381 IB_QP_CREATE_CVLAN_STRIPPING | 1382 IB_QP_CREATE_SOURCE_QPN | 1383 IB_QP_CREATE_PCI_WRITE_END_PADDING)) { 1384 ret = -EINVAL; 1385 goto err_put; 1386 } 1387 1388 if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) { 1389 if (!capable(CAP_NET_RAW)) { 1390 ret = -EPERM; 1391 goto err_put; 1392 } 1393 1394 attr.source_qpn = cmd->source_qpn; 1395 } 1396 1397 if (cmd->qp_type == IB_QPT_XRC_TGT) 1398 qp = ib_create_qp(pd, &attr); 1399 else 1400 qp = _ib_create_qp(device, pd, &attr, &attrs->driver_udata, 1401 &obj->uevent.uobject); 1402 1403 if (IS_ERR(qp)) { 1404 ret = PTR_ERR(qp); 1405 goto err_put; 1406 } 1407 1408 if (cmd->qp_type != IB_QPT_XRC_TGT) { 1409 ret = ib_create_qp_security(qp, device); 1410 if (ret) 1411 goto err_cb; 1412 1413 qp->real_qp = qp; 1414 qp->pd = pd; 1415 qp->send_cq = attr.send_cq; 1416 qp->recv_cq = attr.recv_cq; 1417 qp->srq = attr.srq; 1418 qp->rwq_ind_tbl = ind_tbl; 1419 qp->event_handler = attr.event_handler; 1420 qp->qp_context = attr.qp_context; 1421 qp->qp_type = attr.qp_type; 1422 atomic_set(&qp->usecnt, 0); 1423 atomic_inc(&pd->usecnt); 1424 qp->port = 0; 1425 if (attr.send_cq) 1426 atomic_inc(&attr.send_cq->usecnt); 1427 if (attr.recv_cq) 1428 atomic_inc(&attr.recv_cq->usecnt); 1429 if (attr.srq) 1430 atomic_inc(&attr.srq->usecnt); 1431 if (ind_tbl) 1432 atomic_inc(&ind_tbl->usecnt); 1433 } else { 1434 /* It is done in _ib_create_qp for other QP types */ 1435 qp->uobject = &obj->uevent.uobject; 1436 } 1437 1438 obj->uevent.uobject.object = qp; 1439 1440 memset(&resp, 0, sizeof resp); 1441 resp.base.qpn = qp->qp_num; 1442 resp.base.qp_handle = obj->uevent.uobject.id; 1443 resp.base.max_recv_sge = attr.cap.max_recv_sge; 1444 resp.base.max_send_sge = attr.cap.max_send_sge; 1445 resp.base.max_recv_wr = attr.cap.max_recv_wr; 1446 resp.base.max_send_wr = attr.cap.max_send_wr; 1447 resp.base.max_inline_data = attr.cap.max_inline_data; 1448 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 1449 1450 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1451 if (ret) 1452 goto err_cb; 1453 1454 if (xrcd) { 1455 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, 1456 uobject); 1457 atomic_inc(&obj->uxrcd->refcnt); 1458 uobj_put_read(xrcd_uobj); 1459 } 1460 1461 if (pd) 1462 uobj_put_obj_read(pd); 1463 if (scq) 1464 uobj_put_obj_read(scq); 1465 if (rcq && rcq != scq) 1466 uobj_put_obj_read(rcq); 1467 if (srq) 1468 uobj_put_obj_read(srq); 1469 if (ind_tbl) 1470 uobj_put_obj_read(ind_tbl); 1471 1472 return uobj_alloc_commit(&obj->uevent.uobject); 1473 err_cb: 1474 ib_destroy_qp(qp); 1475 1476 err_put: 1477 if (!IS_ERR(xrcd_uobj)) 1478 uobj_put_read(xrcd_uobj); 1479 if (pd) 1480 uobj_put_obj_read(pd); 1481 if (scq) 1482 uobj_put_obj_read(scq); 1483 if (rcq && rcq != scq) 1484 uobj_put_obj_read(rcq); 1485 if (srq) 1486 uobj_put_obj_read(srq); 1487 if (ind_tbl) 1488 uobj_put_obj_read(ind_tbl); 1489 1490 uobj_alloc_abort(&obj->uevent.uobject); 1491 return ret; 1492 } 1493 1494 static int ib_uverbs_create_qp(struct uverbs_attr_bundle *attrs) 1495 { 1496 struct ib_uverbs_create_qp cmd; 1497 struct ib_uverbs_ex_create_qp cmd_ex; 1498 int ret; 1499 1500 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1501 if (ret) 1502 return ret; 1503 1504 memset(&cmd_ex, 0, sizeof(cmd_ex)); 1505 cmd_ex.user_handle = cmd.user_handle; 1506 cmd_ex.pd_handle = cmd.pd_handle; 1507 cmd_ex.send_cq_handle = cmd.send_cq_handle; 1508 cmd_ex.recv_cq_handle = cmd.recv_cq_handle; 1509 cmd_ex.srq_handle = cmd.srq_handle; 1510 cmd_ex.max_send_wr = cmd.max_send_wr; 1511 cmd_ex.max_recv_wr = cmd.max_recv_wr; 1512 cmd_ex.max_send_sge = cmd.max_send_sge; 1513 cmd_ex.max_recv_sge = cmd.max_recv_sge; 1514 cmd_ex.max_inline_data = cmd.max_inline_data; 1515 cmd_ex.sq_sig_all = cmd.sq_sig_all; 1516 cmd_ex.qp_type = cmd.qp_type; 1517 cmd_ex.is_srq = cmd.is_srq; 1518 1519 return create_qp(attrs, &cmd_ex); 1520 } 1521 1522 static int ib_uverbs_ex_create_qp(struct uverbs_attr_bundle *attrs) 1523 { 1524 struct ib_uverbs_ex_create_qp cmd; 1525 int ret; 1526 1527 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1528 if (ret) 1529 return ret; 1530 1531 if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK) 1532 return -EINVAL; 1533 1534 if (cmd.reserved) 1535 return -EINVAL; 1536 1537 return create_qp(attrs, &cmd); 1538 } 1539 1540 static int ib_uverbs_open_qp(struct uverbs_attr_bundle *attrs) 1541 { 1542 struct ib_uverbs_open_qp cmd; 1543 struct ib_uverbs_create_qp_resp resp; 1544 struct ib_uqp_object *obj; 1545 struct ib_xrcd *xrcd; 1546 struct ib_uobject *uninitialized_var(xrcd_uobj); 1547 struct ib_qp *qp; 1548 struct ib_qp_open_attr attr; 1549 int ret; 1550 struct ib_device *ib_dev; 1551 1552 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1553 if (ret) 1554 return ret; 1555 1556 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs, 1557 &ib_dev); 1558 if (IS_ERR(obj)) 1559 return PTR_ERR(obj); 1560 1561 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd.pd_handle, attrs); 1562 if (IS_ERR(xrcd_uobj)) { 1563 ret = -EINVAL; 1564 goto err_put; 1565 } 1566 1567 xrcd = (struct ib_xrcd *)xrcd_uobj->object; 1568 if (!xrcd) { 1569 ret = -EINVAL; 1570 goto err_xrcd; 1571 } 1572 1573 attr.event_handler = ib_uverbs_qp_event_handler; 1574 attr.qp_context = attrs->ufile; 1575 attr.qp_num = cmd.qpn; 1576 attr.qp_type = cmd.qp_type; 1577 1578 obj->uevent.events_reported = 0; 1579 INIT_LIST_HEAD(&obj->uevent.event_list); 1580 INIT_LIST_HEAD(&obj->mcast_list); 1581 1582 qp = ib_open_qp(xrcd, &attr); 1583 if (IS_ERR(qp)) { 1584 ret = PTR_ERR(qp); 1585 goto err_xrcd; 1586 } 1587 1588 obj->uevent.uobject.object = qp; 1589 obj->uevent.uobject.user_handle = cmd.user_handle; 1590 1591 memset(&resp, 0, sizeof resp); 1592 resp.qpn = qp->qp_num; 1593 resp.qp_handle = obj->uevent.uobject.id; 1594 1595 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1596 if (ret) 1597 goto err_destroy; 1598 1599 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); 1600 atomic_inc(&obj->uxrcd->refcnt); 1601 qp->uobject = &obj->uevent.uobject; 1602 uobj_put_read(xrcd_uobj); 1603 1604 return uobj_alloc_commit(&obj->uevent.uobject); 1605 1606 err_destroy: 1607 ib_destroy_qp(qp); 1608 err_xrcd: 1609 uobj_put_read(xrcd_uobj); 1610 err_put: 1611 uobj_alloc_abort(&obj->uevent.uobject); 1612 return ret; 1613 } 1614 1615 static void copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest *uverb_attr, 1616 struct rdma_ah_attr *rdma_attr) 1617 { 1618 const struct ib_global_route *grh; 1619 1620 uverb_attr->dlid = rdma_ah_get_dlid(rdma_attr); 1621 uverb_attr->sl = rdma_ah_get_sl(rdma_attr); 1622 uverb_attr->src_path_bits = rdma_ah_get_path_bits(rdma_attr); 1623 uverb_attr->static_rate = rdma_ah_get_static_rate(rdma_attr); 1624 uverb_attr->is_global = !!(rdma_ah_get_ah_flags(rdma_attr) & 1625 IB_AH_GRH); 1626 if (uverb_attr->is_global) { 1627 grh = rdma_ah_read_grh(rdma_attr); 1628 memcpy(uverb_attr->dgid, grh->dgid.raw, 16); 1629 uverb_attr->flow_label = grh->flow_label; 1630 uverb_attr->sgid_index = grh->sgid_index; 1631 uverb_attr->hop_limit = grh->hop_limit; 1632 uverb_attr->traffic_class = grh->traffic_class; 1633 } 1634 uverb_attr->port_num = rdma_ah_get_port_num(rdma_attr); 1635 } 1636 1637 static int ib_uverbs_query_qp(struct uverbs_attr_bundle *attrs) 1638 { 1639 struct ib_uverbs_query_qp cmd; 1640 struct ib_uverbs_query_qp_resp resp; 1641 struct ib_qp *qp; 1642 struct ib_qp_attr *attr; 1643 struct ib_qp_init_attr *init_attr; 1644 int ret; 1645 1646 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1647 if (ret) 1648 return ret; 1649 1650 attr = kmalloc(sizeof *attr, GFP_KERNEL); 1651 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); 1652 if (!attr || !init_attr) { 1653 ret = -ENOMEM; 1654 goto out; 1655 } 1656 1657 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 1658 if (!qp) { 1659 ret = -EINVAL; 1660 goto out; 1661 } 1662 1663 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); 1664 1665 uobj_put_obj_read(qp); 1666 1667 if (ret) 1668 goto out; 1669 1670 memset(&resp, 0, sizeof resp); 1671 1672 resp.qp_state = attr->qp_state; 1673 resp.cur_qp_state = attr->cur_qp_state; 1674 resp.path_mtu = attr->path_mtu; 1675 resp.path_mig_state = attr->path_mig_state; 1676 resp.qkey = attr->qkey; 1677 resp.rq_psn = attr->rq_psn; 1678 resp.sq_psn = attr->sq_psn; 1679 resp.dest_qp_num = attr->dest_qp_num; 1680 resp.qp_access_flags = attr->qp_access_flags; 1681 resp.pkey_index = attr->pkey_index; 1682 resp.alt_pkey_index = attr->alt_pkey_index; 1683 resp.sq_draining = attr->sq_draining; 1684 resp.max_rd_atomic = attr->max_rd_atomic; 1685 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; 1686 resp.min_rnr_timer = attr->min_rnr_timer; 1687 resp.port_num = attr->port_num; 1688 resp.timeout = attr->timeout; 1689 resp.retry_cnt = attr->retry_cnt; 1690 resp.rnr_retry = attr->rnr_retry; 1691 resp.alt_port_num = attr->alt_port_num; 1692 resp.alt_timeout = attr->alt_timeout; 1693 1694 copy_ah_attr_to_uverbs(&resp.dest, &attr->ah_attr); 1695 copy_ah_attr_to_uverbs(&resp.alt_dest, &attr->alt_ah_attr); 1696 1697 resp.max_send_wr = init_attr->cap.max_send_wr; 1698 resp.max_recv_wr = init_attr->cap.max_recv_wr; 1699 resp.max_send_sge = init_attr->cap.max_send_sge; 1700 resp.max_recv_sge = init_attr->cap.max_recv_sge; 1701 resp.max_inline_data = init_attr->cap.max_inline_data; 1702 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; 1703 1704 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1705 1706 out: 1707 kfree(attr); 1708 kfree(init_attr); 1709 1710 return ret; 1711 } 1712 1713 /* Remove ignored fields set in the attribute mask */ 1714 static int modify_qp_mask(enum ib_qp_type qp_type, int mask) 1715 { 1716 switch (qp_type) { 1717 case IB_QPT_XRC_INI: 1718 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER); 1719 case IB_QPT_XRC_TGT: 1720 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT | 1721 IB_QP_RNR_RETRY); 1722 default: 1723 return mask; 1724 } 1725 } 1726 1727 static void copy_ah_attr_from_uverbs(struct ib_device *dev, 1728 struct rdma_ah_attr *rdma_attr, 1729 struct ib_uverbs_qp_dest *uverb_attr) 1730 { 1731 rdma_attr->type = rdma_ah_find_type(dev, uverb_attr->port_num); 1732 if (uverb_attr->is_global) { 1733 rdma_ah_set_grh(rdma_attr, NULL, 1734 uverb_attr->flow_label, 1735 uverb_attr->sgid_index, 1736 uverb_attr->hop_limit, 1737 uverb_attr->traffic_class); 1738 rdma_ah_set_dgid_raw(rdma_attr, uverb_attr->dgid); 1739 } else { 1740 rdma_ah_set_ah_flags(rdma_attr, 0); 1741 } 1742 rdma_ah_set_dlid(rdma_attr, uverb_attr->dlid); 1743 rdma_ah_set_sl(rdma_attr, uverb_attr->sl); 1744 rdma_ah_set_path_bits(rdma_attr, uverb_attr->src_path_bits); 1745 rdma_ah_set_static_rate(rdma_attr, uverb_attr->static_rate); 1746 rdma_ah_set_port_num(rdma_attr, uverb_attr->port_num); 1747 rdma_ah_set_make_grd(rdma_attr, false); 1748 } 1749 1750 static int modify_qp(struct uverbs_attr_bundle *attrs, 1751 struct ib_uverbs_ex_modify_qp *cmd) 1752 { 1753 struct ib_qp_attr *attr; 1754 struct ib_qp *qp; 1755 int ret; 1756 1757 attr = kzalloc(sizeof(*attr), GFP_KERNEL); 1758 if (!attr) 1759 return -ENOMEM; 1760 1761 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd->base.qp_handle, 1762 attrs); 1763 if (!qp) { 1764 ret = -EINVAL; 1765 goto out; 1766 } 1767 1768 if ((cmd->base.attr_mask & IB_QP_PORT) && 1769 !rdma_is_port_valid(qp->device, cmd->base.port_num)) { 1770 ret = -EINVAL; 1771 goto release_qp; 1772 } 1773 1774 if ((cmd->base.attr_mask & IB_QP_AV)) { 1775 if (!rdma_is_port_valid(qp->device, cmd->base.dest.port_num)) { 1776 ret = -EINVAL; 1777 goto release_qp; 1778 } 1779 1780 if (cmd->base.attr_mask & IB_QP_STATE && 1781 cmd->base.qp_state == IB_QPS_RTR) { 1782 /* We are in INIT->RTR TRANSITION (if we are not, 1783 * this transition will be rejected in subsequent checks). 1784 * In the INIT->RTR transition, we cannot have IB_QP_PORT set, 1785 * but the IB_QP_STATE flag is required. 1786 * 1787 * Since kernel 3.14 (commit dbf727de7440), the uverbs driver, 1788 * when IB_QP_AV is set, has required inclusion of a valid 1789 * port number in the primary AV. (AVs are created and handled 1790 * differently for infiniband and ethernet (RoCE) ports). 1791 * 1792 * Check the port number included in the primary AV against 1793 * the port number in the qp struct, which was set (and saved) 1794 * in the RST->INIT transition. 1795 */ 1796 if (cmd->base.dest.port_num != qp->real_qp->port) { 1797 ret = -EINVAL; 1798 goto release_qp; 1799 } 1800 } else { 1801 /* We are in SQD->SQD. (If we are not, this transition will 1802 * be rejected later in the verbs layer checks). 1803 * Check for both IB_QP_PORT and IB_QP_AV, these can be set 1804 * together in the SQD->SQD transition. 1805 * 1806 * If only IP_QP_AV was set, add in IB_QP_PORT as well (the 1807 * verbs layer driver does not track primary port changes 1808 * resulting from path migration. Thus, in SQD, if the primary 1809 * AV is modified, the primary port should also be modified). 1810 * 1811 * Note that in this transition, the IB_QP_STATE flag 1812 * is not allowed. 1813 */ 1814 if (((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT)) 1815 == (IB_QP_AV | IB_QP_PORT)) && 1816 cmd->base.port_num != cmd->base.dest.port_num) { 1817 ret = -EINVAL; 1818 goto release_qp; 1819 } 1820 if ((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT)) 1821 == IB_QP_AV) { 1822 cmd->base.attr_mask |= IB_QP_PORT; 1823 cmd->base.port_num = cmd->base.dest.port_num; 1824 } 1825 } 1826 } 1827 1828 if ((cmd->base.attr_mask & IB_QP_ALT_PATH) && 1829 (!rdma_is_port_valid(qp->device, cmd->base.alt_port_num) || 1830 !rdma_is_port_valid(qp->device, cmd->base.alt_dest.port_num) || 1831 cmd->base.alt_port_num != cmd->base.alt_dest.port_num)) { 1832 ret = -EINVAL; 1833 goto release_qp; 1834 } 1835 1836 if ((cmd->base.attr_mask & IB_QP_CUR_STATE && 1837 cmd->base.cur_qp_state > IB_QPS_ERR) || 1838 (cmd->base.attr_mask & IB_QP_STATE && 1839 cmd->base.qp_state > IB_QPS_ERR)) { 1840 ret = -EINVAL; 1841 goto release_qp; 1842 } 1843 1844 if (cmd->base.attr_mask & IB_QP_STATE) 1845 attr->qp_state = cmd->base.qp_state; 1846 if (cmd->base.attr_mask & IB_QP_CUR_STATE) 1847 attr->cur_qp_state = cmd->base.cur_qp_state; 1848 if (cmd->base.attr_mask & IB_QP_PATH_MTU) 1849 attr->path_mtu = cmd->base.path_mtu; 1850 if (cmd->base.attr_mask & IB_QP_PATH_MIG_STATE) 1851 attr->path_mig_state = cmd->base.path_mig_state; 1852 if (cmd->base.attr_mask & IB_QP_QKEY) 1853 attr->qkey = cmd->base.qkey; 1854 if (cmd->base.attr_mask & IB_QP_RQ_PSN) 1855 attr->rq_psn = cmd->base.rq_psn; 1856 if (cmd->base.attr_mask & IB_QP_SQ_PSN) 1857 attr->sq_psn = cmd->base.sq_psn; 1858 if (cmd->base.attr_mask & IB_QP_DEST_QPN) 1859 attr->dest_qp_num = cmd->base.dest_qp_num; 1860 if (cmd->base.attr_mask & IB_QP_ACCESS_FLAGS) 1861 attr->qp_access_flags = cmd->base.qp_access_flags; 1862 if (cmd->base.attr_mask & IB_QP_PKEY_INDEX) 1863 attr->pkey_index = cmd->base.pkey_index; 1864 if (cmd->base.attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) 1865 attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify; 1866 if (cmd->base.attr_mask & IB_QP_MAX_QP_RD_ATOMIC) 1867 attr->max_rd_atomic = cmd->base.max_rd_atomic; 1868 if (cmd->base.attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) 1869 attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic; 1870 if (cmd->base.attr_mask & IB_QP_MIN_RNR_TIMER) 1871 attr->min_rnr_timer = cmd->base.min_rnr_timer; 1872 if (cmd->base.attr_mask & IB_QP_PORT) 1873 attr->port_num = cmd->base.port_num; 1874 if (cmd->base.attr_mask & IB_QP_TIMEOUT) 1875 attr->timeout = cmd->base.timeout; 1876 if (cmd->base.attr_mask & IB_QP_RETRY_CNT) 1877 attr->retry_cnt = cmd->base.retry_cnt; 1878 if (cmd->base.attr_mask & IB_QP_RNR_RETRY) 1879 attr->rnr_retry = cmd->base.rnr_retry; 1880 if (cmd->base.attr_mask & IB_QP_ALT_PATH) { 1881 attr->alt_port_num = cmd->base.alt_port_num; 1882 attr->alt_timeout = cmd->base.alt_timeout; 1883 attr->alt_pkey_index = cmd->base.alt_pkey_index; 1884 } 1885 if (cmd->base.attr_mask & IB_QP_RATE_LIMIT) 1886 attr->rate_limit = cmd->rate_limit; 1887 1888 if (cmd->base.attr_mask & IB_QP_AV) 1889 copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr, 1890 &cmd->base.dest); 1891 1892 if (cmd->base.attr_mask & IB_QP_ALT_PATH) 1893 copy_ah_attr_from_uverbs(qp->device, &attr->alt_ah_attr, 1894 &cmd->base.alt_dest); 1895 1896 ret = ib_modify_qp_with_udata(qp, attr, 1897 modify_qp_mask(qp->qp_type, 1898 cmd->base.attr_mask), 1899 &attrs->driver_udata); 1900 1901 release_qp: 1902 uobj_put_obj_read(qp); 1903 out: 1904 kfree(attr); 1905 1906 return ret; 1907 } 1908 1909 static int ib_uverbs_modify_qp(struct uverbs_attr_bundle *attrs) 1910 { 1911 struct ib_uverbs_ex_modify_qp cmd; 1912 int ret; 1913 1914 ret = uverbs_request(attrs, &cmd.base, sizeof(cmd.base)); 1915 if (ret) 1916 return ret; 1917 1918 if (cmd.base.attr_mask & 1919 ~((IB_USER_LEGACY_LAST_QP_ATTR_MASK << 1) - 1)) 1920 return -EOPNOTSUPP; 1921 1922 return modify_qp(attrs, &cmd); 1923 } 1924 1925 static int ib_uverbs_ex_modify_qp(struct uverbs_attr_bundle *attrs) 1926 { 1927 struct ib_uverbs_ex_modify_qp cmd; 1928 struct ib_uverbs_ex_modify_qp_resp resp = { 1929 .response_length = uverbs_response_length(attrs, sizeof(resp)) 1930 }; 1931 int ret; 1932 1933 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1934 if (ret) 1935 return ret; 1936 1937 /* 1938 * Last bit is reserved for extending the attr_mask by 1939 * using another field. 1940 */ 1941 BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1 << 31)); 1942 1943 if (cmd.base.attr_mask & 1944 ~((IB_USER_LAST_QP_ATTR_MASK << 1) - 1)) 1945 return -EOPNOTSUPP; 1946 1947 ret = modify_qp(attrs, &cmd); 1948 if (ret) 1949 return ret; 1950 1951 return uverbs_response(attrs, &resp, sizeof(resp)); 1952 } 1953 1954 static int ib_uverbs_destroy_qp(struct uverbs_attr_bundle *attrs) 1955 { 1956 struct ib_uverbs_destroy_qp cmd; 1957 struct ib_uverbs_destroy_qp_resp resp; 1958 struct ib_uobject *uobj; 1959 struct ib_uqp_object *obj; 1960 int ret; 1961 1962 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1963 if (ret) 1964 return ret; 1965 1966 uobj = uobj_get_destroy(UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 1967 if (IS_ERR(uobj)) 1968 return PTR_ERR(uobj); 1969 1970 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); 1971 memset(&resp, 0, sizeof(resp)); 1972 resp.events_reported = obj->uevent.events_reported; 1973 1974 uobj_put_destroy(uobj); 1975 1976 return uverbs_response(attrs, &resp, sizeof(resp)); 1977 } 1978 1979 static void *alloc_wr(size_t wr_size, __u32 num_sge) 1980 { 1981 if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof (struct ib_sge))) / 1982 sizeof (struct ib_sge)) 1983 return NULL; 1984 1985 return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) + 1986 num_sge * sizeof (struct ib_sge), GFP_KERNEL); 1987 } 1988 1989 static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs) 1990 { 1991 struct ib_uverbs_post_send cmd; 1992 struct ib_uverbs_post_send_resp resp; 1993 struct ib_uverbs_send_wr *user_wr; 1994 struct ib_send_wr *wr = NULL, *last, *next; 1995 const struct ib_send_wr *bad_wr; 1996 struct ib_qp *qp; 1997 int i, sg_ind; 1998 int is_ud; 1999 int ret, ret2; 2000 size_t next_size; 2001 const struct ib_sge __user *sgls; 2002 const void __user *wqes; 2003 struct uverbs_req_iter iter; 2004 2005 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 2006 if (ret) 2007 return ret; 2008 wqes = uverbs_request_next_ptr(&iter, cmd.wqe_size * cmd.wr_count); 2009 if (IS_ERR(wqes)) 2010 return PTR_ERR(wqes); 2011 sgls = uverbs_request_next_ptr( 2012 &iter, cmd.sge_count * sizeof(struct ib_uverbs_sge)); 2013 if (IS_ERR(sgls)) 2014 return PTR_ERR(sgls); 2015 ret = uverbs_request_finish(&iter); 2016 if (ret) 2017 return ret; 2018 2019 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); 2020 if (!user_wr) 2021 return -ENOMEM; 2022 2023 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2024 if (!qp) { 2025 ret = -EINVAL; 2026 goto out; 2027 } 2028 2029 is_ud = qp->qp_type == IB_QPT_UD; 2030 sg_ind = 0; 2031 last = NULL; 2032 for (i = 0; i < cmd.wr_count; ++i) { 2033 if (copy_from_user(user_wr, wqes + i * cmd.wqe_size, 2034 cmd.wqe_size)) { 2035 ret = -EFAULT; 2036 goto out_put; 2037 } 2038 2039 if (user_wr->num_sge + sg_ind > cmd.sge_count) { 2040 ret = -EINVAL; 2041 goto out_put; 2042 } 2043 2044 if (is_ud) { 2045 struct ib_ud_wr *ud; 2046 2047 if (user_wr->opcode != IB_WR_SEND && 2048 user_wr->opcode != IB_WR_SEND_WITH_IMM) { 2049 ret = -EINVAL; 2050 goto out_put; 2051 } 2052 2053 next_size = sizeof(*ud); 2054 ud = alloc_wr(next_size, user_wr->num_sge); 2055 if (!ud) { 2056 ret = -ENOMEM; 2057 goto out_put; 2058 } 2059 2060 ud->ah = uobj_get_obj_read(ah, UVERBS_OBJECT_AH, 2061 user_wr->wr.ud.ah, attrs); 2062 if (!ud->ah) { 2063 kfree(ud); 2064 ret = -EINVAL; 2065 goto out_put; 2066 } 2067 ud->remote_qpn = user_wr->wr.ud.remote_qpn; 2068 ud->remote_qkey = user_wr->wr.ud.remote_qkey; 2069 2070 next = &ud->wr; 2071 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM || 2072 user_wr->opcode == IB_WR_RDMA_WRITE || 2073 user_wr->opcode == IB_WR_RDMA_READ) { 2074 struct ib_rdma_wr *rdma; 2075 2076 next_size = sizeof(*rdma); 2077 rdma = alloc_wr(next_size, user_wr->num_sge); 2078 if (!rdma) { 2079 ret = -ENOMEM; 2080 goto out_put; 2081 } 2082 2083 rdma->remote_addr = user_wr->wr.rdma.remote_addr; 2084 rdma->rkey = user_wr->wr.rdma.rkey; 2085 2086 next = &rdma->wr; 2087 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP || 2088 user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) { 2089 struct ib_atomic_wr *atomic; 2090 2091 next_size = sizeof(*atomic); 2092 atomic = alloc_wr(next_size, user_wr->num_sge); 2093 if (!atomic) { 2094 ret = -ENOMEM; 2095 goto out_put; 2096 } 2097 2098 atomic->remote_addr = user_wr->wr.atomic.remote_addr; 2099 atomic->compare_add = user_wr->wr.atomic.compare_add; 2100 atomic->swap = user_wr->wr.atomic.swap; 2101 atomic->rkey = user_wr->wr.atomic.rkey; 2102 2103 next = &atomic->wr; 2104 } else if (user_wr->opcode == IB_WR_SEND || 2105 user_wr->opcode == IB_WR_SEND_WITH_IMM || 2106 user_wr->opcode == IB_WR_SEND_WITH_INV) { 2107 next_size = sizeof(*next); 2108 next = alloc_wr(next_size, user_wr->num_sge); 2109 if (!next) { 2110 ret = -ENOMEM; 2111 goto out_put; 2112 } 2113 } else { 2114 ret = -EINVAL; 2115 goto out_put; 2116 } 2117 2118 if (user_wr->opcode == IB_WR_SEND_WITH_IMM || 2119 user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) { 2120 next->ex.imm_data = 2121 (__be32 __force) user_wr->ex.imm_data; 2122 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) { 2123 next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey; 2124 } 2125 2126 if (!last) 2127 wr = next; 2128 else 2129 last->next = next; 2130 last = next; 2131 2132 next->next = NULL; 2133 next->wr_id = user_wr->wr_id; 2134 next->num_sge = user_wr->num_sge; 2135 next->opcode = user_wr->opcode; 2136 next->send_flags = user_wr->send_flags; 2137 2138 if (next->num_sge) { 2139 next->sg_list = (void *) next + 2140 ALIGN(next_size, sizeof(struct ib_sge)); 2141 if (copy_from_user(next->sg_list, sgls + sg_ind, 2142 next->num_sge * 2143 sizeof(struct ib_sge))) { 2144 ret = -EFAULT; 2145 goto out_put; 2146 } 2147 sg_ind += next->num_sge; 2148 } else 2149 next->sg_list = NULL; 2150 } 2151 2152 resp.bad_wr = 0; 2153 ret = qp->device->ops.post_send(qp->real_qp, wr, &bad_wr); 2154 if (ret) 2155 for (next = wr; next; next = next->next) { 2156 ++resp.bad_wr; 2157 if (next == bad_wr) 2158 break; 2159 } 2160 2161 ret2 = uverbs_response(attrs, &resp, sizeof(resp)); 2162 if (ret2) 2163 ret = ret2; 2164 2165 out_put: 2166 uobj_put_obj_read(qp); 2167 2168 while (wr) { 2169 if (is_ud && ud_wr(wr)->ah) 2170 uobj_put_obj_read(ud_wr(wr)->ah); 2171 next = wr->next; 2172 kfree(wr); 2173 wr = next; 2174 } 2175 2176 out: 2177 kfree(user_wr); 2178 2179 return ret; 2180 } 2181 2182 static struct ib_recv_wr * 2183 ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count, 2184 u32 wqe_size, u32 sge_count) 2185 { 2186 struct ib_uverbs_recv_wr *user_wr; 2187 struct ib_recv_wr *wr = NULL, *last, *next; 2188 int sg_ind; 2189 int i; 2190 int ret; 2191 const struct ib_sge __user *sgls; 2192 const void __user *wqes; 2193 2194 if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) 2195 return ERR_PTR(-EINVAL); 2196 2197 wqes = uverbs_request_next_ptr(iter, wqe_size * wr_count); 2198 if (IS_ERR(wqes)) 2199 return ERR_CAST(wqes); 2200 sgls = uverbs_request_next_ptr( 2201 iter, sge_count * sizeof(struct ib_uverbs_sge)); 2202 if (IS_ERR(sgls)) 2203 return ERR_CAST(sgls); 2204 ret = uverbs_request_finish(iter); 2205 if (ret) 2206 return ERR_PTR(ret); 2207 2208 user_wr = kmalloc(wqe_size, GFP_KERNEL); 2209 if (!user_wr) 2210 return ERR_PTR(-ENOMEM); 2211 2212 sg_ind = 0; 2213 last = NULL; 2214 for (i = 0; i < wr_count; ++i) { 2215 if (copy_from_user(user_wr, wqes + i * wqe_size, 2216 wqe_size)) { 2217 ret = -EFAULT; 2218 goto err; 2219 } 2220 2221 if (user_wr->num_sge + sg_ind > sge_count) { 2222 ret = -EINVAL; 2223 goto err; 2224 } 2225 2226 if (user_wr->num_sge >= 2227 (U32_MAX - ALIGN(sizeof *next, sizeof (struct ib_sge))) / 2228 sizeof (struct ib_sge)) { 2229 ret = -EINVAL; 2230 goto err; 2231 } 2232 2233 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + 2234 user_wr->num_sge * sizeof (struct ib_sge), 2235 GFP_KERNEL); 2236 if (!next) { 2237 ret = -ENOMEM; 2238 goto err; 2239 } 2240 2241 if (!last) 2242 wr = next; 2243 else 2244 last->next = next; 2245 last = next; 2246 2247 next->next = NULL; 2248 next->wr_id = user_wr->wr_id; 2249 next->num_sge = user_wr->num_sge; 2250 2251 if (next->num_sge) { 2252 next->sg_list = (void *) next + 2253 ALIGN(sizeof *next, sizeof (struct ib_sge)); 2254 if (copy_from_user(next->sg_list, sgls + sg_ind, 2255 next->num_sge * 2256 sizeof(struct ib_sge))) { 2257 ret = -EFAULT; 2258 goto err; 2259 } 2260 sg_ind += next->num_sge; 2261 } else 2262 next->sg_list = NULL; 2263 } 2264 2265 kfree(user_wr); 2266 return wr; 2267 2268 err: 2269 kfree(user_wr); 2270 2271 while (wr) { 2272 next = wr->next; 2273 kfree(wr); 2274 wr = next; 2275 } 2276 2277 return ERR_PTR(ret); 2278 } 2279 2280 static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs) 2281 { 2282 struct ib_uverbs_post_recv cmd; 2283 struct ib_uverbs_post_recv_resp resp; 2284 struct ib_recv_wr *wr, *next; 2285 const struct ib_recv_wr *bad_wr; 2286 struct ib_qp *qp; 2287 int ret, ret2; 2288 struct uverbs_req_iter iter; 2289 2290 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 2291 if (ret) 2292 return ret; 2293 2294 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size, 2295 cmd.sge_count); 2296 if (IS_ERR(wr)) 2297 return PTR_ERR(wr); 2298 2299 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2300 if (!qp) { 2301 ret = -EINVAL; 2302 goto out; 2303 } 2304 2305 resp.bad_wr = 0; 2306 ret = qp->device->ops.post_recv(qp->real_qp, wr, &bad_wr); 2307 2308 uobj_put_obj_read(qp); 2309 if (ret) { 2310 for (next = wr; next; next = next->next) { 2311 ++resp.bad_wr; 2312 if (next == bad_wr) 2313 break; 2314 } 2315 } 2316 2317 ret2 = uverbs_response(attrs, &resp, sizeof(resp)); 2318 if (ret2) 2319 ret = ret2; 2320 out: 2321 while (wr) { 2322 next = wr->next; 2323 kfree(wr); 2324 wr = next; 2325 } 2326 2327 return ret; 2328 } 2329 2330 static int ib_uverbs_post_srq_recv(struct uverbs_attr_bundle *attrs) 2331 { 2332 struct ib_uverbs_post_srq_recv cmd; 2333 struct ib_uverbs_post_srq_recv_resp resp; 2334 struct ib_recv_wr *wr, *next; 2335 const struct ib_recv_wr *bad_wr; 2336 struct ib_srq *srq; 2337 int ret, ret2; 2338 struct uverbs_req_iter iter; 2339 2340 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 2341 if (ret) 2342 return ret; 2343 2344 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size, 2345 cmd.sge_count); 2346 if (IS_ERR(wr)) 2347 return PTR_ERR(wr); 2348 2349 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 2350 if (!srq) { 2351 ret = -EINVAL; 2352 goto out; 2353 } 2354 2355 resp.bad_wr = 0; 2356 ret = srq->device->ops.post_srq_recv(srq, wr, &bad_wr); 2357 2358 uobj_put_obj_read(srq); 2359 2360 if (ret) 2361 for (next = wr; next; next = next->next) { 2362 ++resp.bad_wr; 2363 if (next == bad_wr) 2364 break; 2365 } 2366 2367 ret2 = uverbs_response(attrs, &resp, sizeof(resp)); 2368 if (ret2) 2369 ret = ret2; 2370 2371 out: 2372 while (wr) { 2373 next = wr->next; 2374 kfree(wr); 2375 wr = next; 2376 } 2377 2378 return ret; 2379 } 2380 2381 static int ib_uverbs_create_ah(struct uverbs_attr_bundle *attrs) 2382 { 2383 struct ib_uverbs_create_ah cmd; 2384 struct ib_uverbs_create_ah_resp resp; 2385 struct ib_uobject *uobj; 2386 struct ib_pd *pd; 2387 struct ib_ah *ah; 2388 struct rdma_ah_attr attr = {}; 2389 int ret; 2390 struct ib_device *ib_dev; 2391 2392 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2393 if (ret) 2394 return ret; 2395 2396 uobj = uobj_alloc(UVERBS_OBJECT_AH, attrs, &ib_dev); 2397 if (IS_ERR(uobj)) 2398 return PTR_ERR(uobj); 2399 2400 if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num)) { 2401 ret = -EINVAL; 2402 goto err; 2403 } 2404 2405 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 2406 if (!pd) { 2407 ret = -EINVAL; 2408 goto err; 2409 } 2410 2411 attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num); 2412 rdma_ah_set_make_grd(&attr, false); 2413 rdma_ah_set_dlid(&attr, cmd.attr.dlid); 2414 rdma_ah_set_sl(&attr, cmd.attr.sl); 2415 rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits); 2416 rdma_ah_set_static_rate(&attr, cmd.attr.static_rate); 2417 rdma_ah_set_port_num(&attr, cmd.attr.port_num); 2418 2419 if (cmd.attr.is_global) { 2420 rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label, 2421 cmd.attr.grh.sgid_index, 2422 cmd.attr.grh.hop_limit, 2423 cmd.attr.grh.traffic_class); 2424 rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid); 2425 } else { 2426 rdma_ah_set_ah_flags(&attr, 0); 2427 } 2428 2429 ah = rdma_create_user_ah(pd, &attr, &attrs->driver_udata); 2430 if (IS_ERR(ah)) { 2431 ret = PTR_ERR(ah); 2432 goto err_put; 2433 } 2434 2435 ah->uobject = uobj; 2436 uobj->user_handle = cmd.user_handle; 2437 uobj->object = ah; 2438 2439 resp.ah_handle = uobj->id; 2440 2441 ret = uverbs_response(attrs, &resp, sizeof(resp)); 2442 if (ret) 2443 goto err_copy; 2444 2445 uobj_put_obj_read(pd); 2446 return uobj_alloc_commit(uobj); 2447 2448 err_copy: 2449 rdma_destroy_ah(ah, RDMA_DESTROY_AH_SLEEPABLE); 2450 2451 err_put: 2452 uobj_put_obj_read(pd); 2453 2454 err: 2455 uobj_alloc_abort(uobj); 2456 return ret; 2457 } 2458 2459 static int ib_uverbs_destroy_ah(struct uverbs_attr_bundle *attrs) 2460 { 2461 struct ib_uverbs_destroy_ah cmd; 2462 int ret; 2463 2464 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2465 if (ret) 2466 return ret; 2467 2468 return uobj_perform_destroy(UVERBS_OBJECT_AH, cmd.ah_handle, attrs); 2469 } 2470 2471 static int ib_uverbs_attach_mcast(struct uverbs_attr_bundle *attrs) 2472 { 2473 struct ib_uverbs_attach_mcast cmd; 2474 struct ib_qp *qp; 2475 struct ib_uqp_object *obj; 2476 struct ib_uverbs_mcast_entry *mcast; 2477 int ret; 2478 2479 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2480 if (ret) 2481 return ret; 2482 2483 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2484 if (!qp) 2485 return -EINVAL; 2486 2487 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); 2488 2489 mutex_lock(&obj->mcast_lock); 2490 list_for_each_entry(mcast, &obj->mcast_list, list) 2491 if (cmd.mlid == mcast->lid && 2492 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { 2493 ret = 0; 2494 goto out_put; 2495 } 2496 2497 mcast = kmalloc(sizeof *mcast, GFP_KERNEL); 2498 if (!mcast) { 2499 ret = -ENOMEM; 2500 goto out_put; 2501 } 2502 2503 mcast->lid = cmd.mlid; 2504 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); 2505 2506 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); 2507 if (!ret) 2508 list_add_tail(&mcast->list, &obj->mcast_list); 2509 else 2510 kfree(mcast); 2511 2512 out_put: 2513 mutex_unlock(&obj->mcast_lock); 2514 uobj_put_obj_read(qp); 2515 2516 return ret; 2517 } 2518 2519 static int ib_uverbs_detach_mcast(struct uverbs_attr_bundle *attrs) 2520 { 2521 struct ib_uverbs_detach_mcast cmd; 2522 struct ib_uqp_object *obj; 2523 struct ib_qp *qp; 2524 struct ib_uverbs_mcast_entry *mcast; 2525 int ret = -EINVAL; 2526 bool found = false; 2527 2528 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2529 if (ret) 2530 return ret; 2531 2532 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2533 if (!qp) 2534 return -EINVAL; 2535 2536 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); 2537 mutex_lock(&obj->mcast_lock); 2538 2539 list_for_each_entry(mcast, &obj->mcast_list, list) 2540 if (cmd.mlid == mcast->lid && 2541 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { 2542 list_del(&mcast->list); 2543 kfree(mcast); 2544 found = true; 2545 break; 2546 } 2547 2548 if (!found) { 2549 ret = -EINVAL; 2550 goto out_put; 2551 } 2552 2553 ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid); 2554 2555 out_put: 2556 mutex_unlock(&obj->mcast_lock); 2557 uobj_put_obj_read(qp); 2558 return ret; 2559 } 2560 2561 struct ib_uflow_resources *flow_resources_alloc(size_t num_specs) 2562 { 2563 struct ib_uflow_resources *resources; 2564 2565 resources = kzalloc(sizeof(*resources), GFP_KERNEL); 2566 2567 if (!resources) 2568 return NULL; 2569 2570 if (!num_specs) 2571 goto out; 2572 2573 resources->counters = 2574 kcalloc(num_specs, sizeof(*resources->counters), GFP_KERNEL); 2575 resources->collection = 2576 kcalloc(num_specs, sizeof(*resources->collection), GFP_KERNEL); 2577 2578 if (!resources->counters || !resources->collection) 2579 goto err; 2580 2581 out: 2582 resources->max = num_specs; 2583 return resources; 2584 2585 err: 2586 kfree(resources->counters); 2587 kfree(resources); 2588 2589 return NULL; 2590 } 2591 EXPORT_SYMBOL(flow_resources_alloc); 2592 2593 void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res) 2594 { 2595 unsigned int i; 2596 2597 if (!uflow_res) 2598 return; 2599 2600 for (i = 0; i < uflow_res->collection_num; i++) 2601 atomic_dec(&uflow_res->collection[i]->usecnt); 2602 2603 for (i = 0; i < uflow_res->counters_num; i++) 2604 atomic_dec(&uflow_res->counters[i]->usecnt); 2605 2606 kfree(uflow_res->collection); 2607 kfree(uflow_res->counters); 2608 kfree(uflow_res); 2609 } 2610 EXPORT_SYMBOL(ib_uverbs_flow_resources_free); 2611 2612 void flow_resources_add(struct ib_uflow_resources *uflow_res, 2613 enum ib_flow_spec_type type, 2614 void *ibobj) 2615 { 2616 WARN_ON(uflow_res->num >= uflow_res->max); 2617 2618 switch (type) { 2619 case IB_FLOW_SPEC_ACTION_HANDLE: 2620 atomic_inc(&((struct ib_flow_action *)ibobj)->usecnt); 2621 uflow_res->collection[uflow_res->collection_num++] = 2622 (struct ib_flow_action *)ibobj; 2623 break; 2624 case IB_FLOW_SPEC_ACTION_COUNT: 2625 atomic_inc(&((struct ib_counters *)ibobj)->usecnt); 2626 uflow_res->counters[uflow_res->counters_num++] = 2627 (struct ib_counters *)ibobj; 2628 break; 2629 default: 2630 WARN_ON(1); 2631 } 2632 2633 uflow_res->num++; 2634 } 2635 EXPORT_SYMBOL(flow_resources_add); 2636 2637 static int kern_spec_to_ib_spec_action(struct uverbs_attr_bundle *attrs, 2638 struct ib_uverbs_flow_spec *kern_spec, 2639 union ib_flow_spec *ib_spec, 2640 struct ib_uflow_resources *uflow_res) 2641 { 2642 ib_spec->type = kern_spec->type; 2643 switch (ib_spec->type) { 2644 case IB_FLOW_SPEC_ACTION_TAG: 2645 if (kern_spec->flow_tag.size != 2646 sizeof(struct ib_uverbs_flow_spec_action_tag)) 2647 return -EINVAL; 2648 2649 ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag); 2650 ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id; 2651 break; 2652 case IB_FLOW_SPEC_ACTION_DROP: 2653 if (kern_spec->drop.size != 2654 sizeof(struct ib_uverbs_flow_spec_action_drop)) 2655 return -EINVAL; 2656 2657 ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop); 2658 break; 2659 case IB_FLOW_SPEC_ACTION_HANDLE: 2660 if (kern_spec->action.size != 2661 sizeof(struct ib_uverbs_flow_spec_action_handle)) 2662 return -EOPNOTSUPP; 2663 ib_spec->action.act = uobj_get_obj_read(flow_action, 2664 UVERBS_OBJECT_FLOW_ACTION, 2665 kern_spec->action.handle, 2666 attrs); 2667 if (!ib_spec->action.act) 2668 return -EINVAL; 2669 ib_spec->action.size = 2670 sizeof(struct ib_flow_spec_action_handle); 2671 flow_resources_add(uflow_res, 2672 IB_FLOW_SPEC_ACTION_HANDLE, 2673 ib_spec->action.act); 2674 uobj_put_obj_read(ib_spec->action.act); 2675 break; 2676 case IB_FLOW_SPEC_ACTION_COUNT: 2677 if (kern_spec->flow_count.size != 2678 sizeof(struct ib_uverbs_flow_spec_action_count)) 2679 return -EINVAL; 2680 ib_spec->flow_count.counters = 2681 uobj_get_obj_read(counters, 2682 UVERBS_OBJECT_COUNTERS, 2683 kern_spec->flow_count.handle, 2684 attrs); 2685 if (!ib_spec->flow_count.counters) 2686 return -EINVAL; 2687 ib_spec->flow_count.size = 2688 sizeof(struct ib_flow_spec_action_count); 2689 flow_resources_add(uflow_res, 2690 IB_FLOW_SPEC_ACTION_COUNT, 2691 ib_spec->flow_count.counters); 2692 uobj_put_obj_read(ib_spec->flow_count.counters); 2693 break; 2694 default: 2695 return -EINVAL; 2696 } 2697 return 0; 2698 } 2699 2700 static size_t kern_spec_filter_sz(const struct ib_uverbs_flow_spec_hdr *spec) 2701 { 2702 /* Returns user space filter size, includes padding */ 2703 return (spec->size - sizeof(struct ib_uverbs_flow_spec_hdr)) / 2; 2704 } 2705 2706 static ssize_t spec_filter_size(const void *kern_spec_filter, u16 kern_filter_size, 2707 u16 ib_real_filter_sz) 2708 { 2709 /* 2710 * User space filter structures must be 64 bit aligned, otherwise this 2711 * may pass, but we won't handle additional new attributes. 2712 */ 2713 2714 if (kern_filter_size > ib_real_filter_sz) { 2715 if (memchr_inv(kern_spec_filter + 2716 ib_real_filter_sz, 0, 2717 kern_filter_size - ib_real_filter_sz)) 2718 return -EINVAL; 2719 return ib_real_filter_sz; 2720 } 2721 return kern_filter_size; 2722 } 2723 2724 int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type, 2725 const void *kern_spec_mask, 2726 const void *kern_spec_val, 2727 size_t kern_filter_sz, 2728 union ib_flow_spec *ib_spec) 2729 { 2730 ssize_t actual_filter_sz; 2731 ssize_t ib_filter_sz; 2732 2733 /* User flow spec size must be aligned to 4 bytes */ 2734 if (kern_filter_sz != ALIGN(kern_filter_sz, 4)) 2735 return -EINVAL; 2736 2737 ib_spec->type = type; 2738 2739 if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL)) 2740 return -EINVAL; 2741 2742 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) { 2743 case IB_FLOW_SPEC_ETH: 2744 ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz); 2745 actual_filter_sz = spec_filter_size(kern_spec_mask, 2746 kern_filter_sz, 2747 ib_filter_sz); 2748 if (actual_filter_sz <= 0) 2749 return -EINVAL; 2750 ib_spec->size = sizeof(struct ib_flow_spec_eth); 2751 memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz); 2752 memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz); 2753 break; 2754 case IB_FLOW_SPEC_IPV4: 2755 ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz); 2756 actual_filter_sz = spec_filter_size(kern_spec_mask, 2757 kern_filter_sz, 2758 ib_filter_sz); 2759 if (actual_filter_sz <= 0) 2760 return -EINVAL; 2761 ib_spec->size = sizeof(struct ib_flow_spec_ipv4); 2762 memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz); 2763 memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz); 2764 break; 2765 case IB_FLOW_SPEC_IPV6: 2766 ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz); 2767 actual_filter_sz = spec_filter_size(kern_spec_mask, 2768 kern_filter_sz, 2769 ib_filter_sz); 2770 if (actual_filter_sz <= 0) 2771 return -EINVAL; 2772 ib_spec->size = sizeof(struct ib_flow_spec_ipv6); 2773 memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz); 2774 memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz); 2775 2776 if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) || 2777 (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20)) 2778 return -EINVAL; 2779 break; 2780 case IB_FLOW_SPEC_TCP: 2781 case IB_FLOW_SPEC_UDP: 2782 ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz); 2783 actual_filter_sz = spec_filter_size(kern_spec_mask, 2784 kern_filter_sz, 2785 ib_filter_sz); 2786 if (actual_filter_sz <= 0) 2787 return -EINVAL; 2788 ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp); 2789 memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz); 2790 memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz); 2791 break; 2792 case IB_FLOW_SPEC_VXLAN_TUNNEL: 2793 ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz); 2794 actual_filter_sz = spec_filter_size(kern_spec_mask, 2795 kern_filter_sz, 2796 ib_filter_sz); 2797 if (actual_filter_sz <= 0) 2798 return -EINVAL; 2799 ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel); 2800 memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz); 2801 memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz); 2802 2803 if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) || 2804 (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24)) 2805 return -EINVAL; 2806 break; 2807 case IB_FLOW_SPEC_ESP: 2808 ib_filter_sz = offsetof(struct ib_flow_esp_filter, real_sz); 2809 actual_filter_sz = spec_filter_size(kern_spec_mask, 2810 kern_filter_sz, 2811 ib_filter_sz); 2812 if (actual_filter_sz <= 0) 2813 return -EINVAL; 2814 ib_spec->esp.size = sizeof(struct ib_flow_spec_esp); 2815 memcpy(&ib_spec->esp.val, kern_spec_val, actual_filter_sz); 2816 memcpy(&ib_spec->esp.mask, kern_spec_mask, actual_filter_sz); 2817 break; 2818 case IB_FLOW_SPEC_GRE: 2819 ib_filter_sz = offsetof(struct ib_flow_gre_filter, real_sz); 2820 actual_filter_sz = spec_filter_size(kern_spec_mask, 2821 kern_filter_sz, 2822 ib_filter_sz); 2823 if (actual_filter_sz <= 0) 2824 return -EINVAL; 2825 ib_spec->gre.size = sizeof(struct ib_flow_spec_gre); 2826 memcpy(&ib_spec->gre.val, kern_spec_val, actual_filter_sz); 2827 memcpy(&ib_spec->gre.mask, kern_spec_mask, actual_filter_sz); 2828 break; 2829 case IB_FLOW_SPEC_MPLS: 2830 ib_filter_sz = offsetof(struct ib_flow_mpls_filter, real_sz); 2831 actual_filter_sz = spec_filter_size(kern_spec_mask, 2832 kern_filter_sz, 2833 ib_filter_sz); 2834 if (actual_filter_sz <= 0) 2835 return -EINVAL; 2836 ib_spec->mpls.size = sizeof(struct ib_flow_spec_mpls); 2837 memcpy(&ib_spec->mpls.val, kern_spec_val, actual_filter_sz); 2838 memcpy(&ib_spec->mpls.mask, kern_spec_mask, actual_filter_sz); 2839 break; 2840 default: 2841 return -EINVAL; 2842 } 2843 return 0; 2844 } 2845 2846 static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec, 2847 union ib_flow_spec *ib_spec) 2848 { 2849 ssize_t kern_filter_sz; 2850 void *kern_spec_mask; 2851 void *kern_spec_val; 2852 2853 kern_filter_sz = kern_spec_filter_sz(&kern_spec->hdr); 2854 2855 kern_spec_val = (void *)kern_spec + 2856 sizeof(struct ib_uverbs_flow_spec_hdr); 2857 kern_spec_mask = kern_spec_val + kern_filter_sz; 2858 2859 return ib_uverbs_kern_spec_to_ib_spec_filter(kern_spec->type, 2860 kern_spec_mask, 2861 kern_spec_val, 2862 kern_filter_sz, ib_spec); 2863 } 2864 2865 static int kern_spec_to_ib_spec(struct uverbs_attr_bundle *attrs, 2866 struct ib_uverbs_flow_spec *kern_spec, 2867 union ib_flow_spec *ib_spec, 2868 struct ib_uflow_resources *uflow_res) 2869 { 2870 if (kern_spec->reserved) 2871 return -EINVAL; 2872 2873 if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG) 2874 return kern_spec_to_ib_spec_action(attrs, kern_spec, ib_spec, 2875 uflow_res); 2876 else 2877 return kern_spec_to_ib_spec_filter(kern_spec, ib_spec); 2878 } 2879 2880 static int ib_uverbs_ex_create_wq(struct uverbs_attr_bundle *attrs) 2881 { 2882 struct ib_uverbs_ex_create_wq cmd; 2883 struct ib_uverbs_ex_create_wq_resp resp = {}; 2884 struct ib_uwq_object *obj; 2885 int err = 0; 2886 struct ib_cq *cq; 2887 struct ib_pd *pd; 2888 struct ib_wq *wq; 2889 struct ib_wq_init_attr wq_init_attr = {}; 2890 struct ib_device *ib_dev; 2891 2892 err = uverbs_request(attrs, &cmd, sizeof(cmd)); 2893 if (err) 2894 return err; 2895 2896 if (cmd.comp_mask) 2897 return -EOPNOTSUPP; 2898 2899 obj = (struct ib_uwq_object *)uobj_alloc(UVERBS_OBJECT_WQ, attrs, 2900 &ib_dev); 2901 if (IS_ERR(obj)) 2902 return PTR_ERR(obj); 2903 2904 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 2905 if (!pd) { 2906 err = -EINVAL; 2907 goto err_uobj; 2908 } 2909 2910 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 2911 if (!cq) { 2912 err = -EINVAL; 2913 goto err_put_pd; 2914 } 2915 2916 wq_init_attr.cq = cq; 2917 wq_init_attr.max_sge = cmd.max_sge; 2918 wq_init_attr.max_wr = cmd.max_wr; 2919 wq_init_attr.wq_context = attrs->ufile; 2920 wq_init_attr.wq_type = cmd.wq_type; 2921 wq_init_attr.event_handler = ib_uverbs_wq_event_handler; 2922 wq_init_attr.create_flags = cmd.create_flags; 2923 obj->uevent.events_reported = 0; 2924 INIT_LIST_HEAD(&obj->uevent.event_list); 2925 2926 wq = pd->device->ops.create_wq(pd, &wq_init_attr, &attrs->driver_udata); 2927 if (IS_ERR(wq)) { 2928 err = PTR_ERR(wq); 2929 goto err_put_cq; 2930 } 2931 2932 wq->uobject = &obj->uevent.uobject; 2933 obj->uevent.uobject.object = wq; 2934 wq->wq_type = wq_init_attr.wq_type; 2935 wq->cq = cq; 2936 wq->pd = pd; 2937 wq->device = pd->device; 2938 wq->wq_context = wq_init_attr.wq_context; 2939 atomic_set(&wq->usecnt, 0); 2940 atomic_inc(&pd->usecnt); 2941 atomic_inc(&cq->usecnt); 2942 wq->uobject = &obj->uevent.uobject; 2943 obj->uevent.uobject.object = wq; 2944 2945 memset(&resp, 0, sizeof(resp)); 2946 resp.wq_handle = obj->uevent.uobject.id; 2947 resp.max_sge = wq_init_attr.max_sge; 2948 resp.max_wr = wq_init_attr.max_wr; 2949 resp.wqn = wq->wq_num; 2950 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 2951 err = uverbs_response(attrs, &resp, sizeof(resp)); 2952 if (err) 2953 goto err_copy; 2954 2955 uobj_put_obj_read(pd); 2956 uobj_put_obj_read(cq); 2957 return uobj_alloc_commit(&obj->uevent.uobject); 2958 2959 err_copy: 2960 ib_destroy_wq(wq); 2961 err_put_cq: 2962 uobj_put_obj_read(cq); 2963 err_put_pd: 2964 uobj_put_obj_read(pd); 2965 err_uobj: 2966 uobj_alloc_abort(&obj->uevent.uobject); 2967 2968 return err; 2969 } 2970 2971 static int ib_uverbs_ex_destroy_wq(struct uverbs_attr_bundle *attrs) 2972 { 2973 struct ib_uverbs_ex_destroy_wq cmd; 2974 struct ib_uverbs_ex_destroy_wq_resp resp = {}; 2975 struct ib_uobject *uobj; 2976 struct ib_uwq_object *obj; 2977 int ret; 2978 2979 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2980 if (ret) 2981 return ret; 2982 2983 if (cmd.comp_mask) 2984 return -EOPNOTSUPP; 2985 2986 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 2987 uobj = uobj_get_destroy(UVERBS_OBJECT_WQ, cmd.wq_handle, attrs); 2988 if (IS_ERR(uobj)) 2989 return PTR_ERR(uobj); 2990 2991 obj = container_of(uobj, struct ib_uwq_object, uevent.uobject); 2992 resp.events_reported = obj->uevent.events_reported; 2993 2994 uobj_put_destroy(uobj); 2995 2996 return uverbs_response(attrs, &resp, sizeof(resp)); 2997 } 2998 2999 static int ib_uverbs_ex_modify_wq(struct uverbs_attr_bundle *attrs) 3000 { 3001 struct ib_uverbs_ex_modify_wq cmd; 3002 struct ib_wq *wq; 3003 struct ib_wq_attr wq_attr = {}; 3004 int ret; 3005 3006 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3007 if (ret) 3008 return ret; 3009 3010 if (!cmd.attr_mask) 3011 return -EINVAL; 3012 3013 if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS)) 3014 return -EINVAL; 3015 3016 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, cmd.wq_handle, attrs); 3017 if (!wq) 3018 return -EINVAL; 3019 3020 wq_attr.curr_wq_state = cmd.curr_wq_state; 3021 wq_attr.wq_state = cmd.wq_state; 3022 if (cmd.attr_mask & IB_WQ_FLAGS) { 3023 wq_attr.flags = cmd.flags; 3024 wq_attr.flags_mask = cmd.flags_mask; 3025 } 3026 ret = wq->device->ops.modify_wq(wq, &wq_attr, cmd.attr_mask, 3027 &attrs->driver_udata); 3028 uobj_put_obj_read(wq); 3029 return ret; 3030 } 3031 3032 static int ib_uverbs_ex_create_rwq_ind_table(struct uverbs_attr_bundle *attrs) 3033 { 3034 struct ib_uverbs_ex_create_rwq_ind_table cmd; 3035 struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {}; 3036 struct ib_uobject *uobj; 3037 int err; 3038 struct ib_rwq_ind_table_init_attr init_attr = {}; 3039 struct ib_rwq_ind_table *rwq_ind_tbl; 3040 struct ib_wq **wqs = NULL; 3041 u32 *wqs_handles = NULL; 3042 struct ib_wq *wq = NULL; 3043 int i, j, num_read_wqs; 3044 u32 num_wq_handles; 3045 struct uverbs_req_iter iter; 3046 struct ib_device *ib_dev; 3047 3048 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 3049 if (err) 3050 return err; 3051 3052 if (cmd.comp_mask) 3053 return -EOPNOTSUPP; 3054 3055 if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE) 3056 return -EINVAL; 3057 3058 num_wq_handles = 1 << cmd.log_ind_tbl_size; 3059 wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles), 3060 GFP_KERNEL); 3061 if (!wqs_handles) 3062 return -ENOMEM; 3063 3064 err = uverbs_request_next(&iter, wqs_handles, 3065 num_wq_handles * sizeof(__u32)); 3066 if (err) 3067 goto err_free; 3068 3069 err = uverbs_request_finish(&iter); 3070 if (err) 3071 goto err_free; 3072 3073 wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL); 3074 if (!wqs) { 3075 err = -ENOMEM; 3076 goto err_free; 3077 } 3078 3079 for (num_read_wqs = 0; num_read_wqs < num_wq_handles; 3080 num_read_wqs++) { 3081 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, 3082 wqs_handles[num_read_wqs], attrs); 3083 if (!wq) { 3084 err = -EINVAL; 3085 goto put_wqs; 3086 } 3087 3088 wqs[num_read_wqs] = wq; 3089 } 3090 3091 uobj = uobj_alloc(UVERBS_OBJECT_RWQ_IND_TBL, attrs, &ib_dev); 3092 if (IS_ERR(uobj)) { 3093 err = PTR_ERR(uobj); 3094 goto put_wqs; 3095 } 3096 3097 init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size; 3098 init_attr.ind_tbl = wqs; 3099 3100 rwq_ind_tbl = ib_dev->ops.create_rwq_ind_table(ib_dev, &init_attr, 3101 &attrs->driver_udata); 3102 3103 if (IS_ERR(rwq_ind_tbl)) { 3104 err = PTR_ERR(rwq_ind_tbl); 3105 goto err_uobj; 3106 } 3107 3108 rwq_ind_tbl->ind_tbl = wqs; 3109 rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size; 3110 rwq_ind_tbl->uobject = uobj; 3111 uobj->object = rwq_ind_tbl; 3112 rwq_ind_tbl->device = ib_dev; 3113 atomic_set(&rwq_ind_tbl->usecnt, 0); 3114 3115 for (i = 0; i < num_wq_handles; i++) 3116 atomic_inc(&wqs[i]->usecnt); 3117 3118 resp.ind_tbl_handle = uobj->id; 3119 resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num; 3120 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 3121 3122 err = uverbs_response(attrs, &resp, sizeof(resp)); 3123 if (err) 3124 goto err_copy; 3125 3126 kfree(wqs_handles); 3127 3128 for (j = 0; j < num_read_wqs; j++) 3129 uobj_put_obj_read(wqs[j]); 3130 3131 return uobj_alloc_commit(uobj); 3132 3133 err_copy: 3134 ib_destroy_rwq_ind_table(rwq_ind_tbl); 3135 err_uobj: 3136 uobj_alloc_abort(uobj); 3137 put_wqs: 3138 for (j = 0; j < num_read_wqs; j++) 3139 uobj_put_obj_read(wqs[j]); 3140 err_free: 3141 kfree(wqs_handles); 3142 kfree(wqs); 3143 return err; 3144 } 3145 3146 static int ib_uverbs_ex_destroy_rwq_ind_table(struct uverbs_attr_bundle *attrs) 3147 { 3148 struct ib_uverbs_ex_destroy_rwq_ind_table cmd; 3149 int ret; 3150 3151 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3152 if (ret) 3153 return ret; 3154 3155 if (cmd.comp_mask) 3156 return -EOPNOTSUPP; 3157 3158 return uobj_perform_destroy(UVERBS_OBJECT_RWQ_IND_TBL, 3159 cmd.ind_tbl_handle, attrs); 3160 } 3161 3162 static int ib_uverbs_ex_create_flow(struct uverbs_attr_bundle *attrs) 3163 { 3164 struct ib_uverbs_create_flow cmd; 3165 struct ib_uverbs_create_flow_resp resp; 3166 struct ib_uobject *uobj; 3167 struct ib_flow *flow_id; 3168 struct ib_uverbs_flow_attr *kern_flow_attr; 3169 struct ib_flow_attr *flow_attr; 3170 struct ib_qp *qp; 3171 struct ib_uflow_resources *uflow_res; 3172 struct ib_uverbs_flow_spec_hdr *kern_spec; 3173 struct uverbs_req_iter iter; 3174 int err; 3175 void *ib_spec; 3176 int i; 3177 struct ib_device *ib_dev; 3178 3179 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 3180 if (err) 3181 return err; 3182 3183 if (cmd.comp_mask) 3184 return -EINVAL; 3185 3186 if (!capable(CAP_NET_RAW)) 3187 return -EPERM; 3188 3189 if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED) 3190 return -EINVAL; 3191 3192 if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) && 3193 ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) || 3194 (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT))) 3195 return -EINVAL; 3196 3197 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS) 3198 return -EINVAL; 3199 3200 if (cmd.flow_attr.size > 3201 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec))) 3202 return -EINVAL; 3203 3204 if (cmd.flow_attr.reserved[0] || 3205 cmd.flow_attr.reserved[1]) 3206 return -EINVAL; 3207 3208 if (cmd.flow_attr.num_of_specs) { 3209 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size, 3210 GFP_KERNEL); 3211 if (!kern_flow_attr) 3212 return -ENOMEM; 3213 3214 *kern_flow_attr = cmd.flow_attr; 3215 err = uverbs_request_next(&iter, &kern_flow_attr->flow_specs, 3216 cmd.flow_attr.size); 3217 if (err) 3218 goto err_free_attr; 3219 } else { 3220 kern_flow_attr = &cmd.flow_attr; 3221 } 3222 3223 err = uverbs_request_finish(&iter); 3224 if (err) 3225 goto err_free_attr; 3226 3227 uobj = uobj_alloc(UVERBS_OBJECT_FLOW, attrs, &ib_dev); 3228 if (IS_ERR(uobj)) { 3229 err = PTR_ERR(uobj); 3230 goto err_free_attr; 3231 } 3232 3233 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 3234 if (!qp) { 3235 err = -EINVAL; 3236 goto err_uobj; 3237 } 3238 3239 if (qp->qp_type != IB_QPT_UD && qp->qp_type != IB_QPT_RAW_PACKET) { 3240 err = -EINVAL; 3241 goto err_put; 3242 } 3243 3244 flow_attr = kzalloc(struct_size(flow_attr, flows, 3245 cmd.flow_attr.num_of_specs), GFP_KERNEL); 3246 if (!flow_attr) { 3247 err = -ENOMEM; 3248 goto err_put; 3249 } 3250 uflow_res = flow_resources_alloc(cmd.flow_attr.num_of_specs); 3251 if (!uflow_res) { 3252 err = -ENOMEM; 3253 goto err_free_flow_attr; 3254 } 3255 3256 flow_attr->type = kern_flow_attr->type; 3257 flow_attr->priority = kern_flow_attr->priority; 3258 flow_attr->num_of_specs = kern_flow_attr->num_of_specs; 3259 flow_attr->port = kern_flow_attr->port; 3260 flow_attr->flags = kern_flow_attr->flags; 3261 flow_attr->size = sizeof(*flow_attr); 3262 3263 kern_spec = kern_flow_attr->flow_specs; 3264 ib_spec = flow_attr + 1; 3265 for (i = 0; i < flow_attr->num_of_specs && 3266 cmd.flow_attr.size >= sizeof(*kern_spec) && 3267 cmd.flow_attr.size >= kern_spec->size; 3268 i++) { 3269 err = kern_spec_to_ib_spec( 3270 attrs, (struct ib_uverbs_flow_spec *)kern_spec, 3271 ib_spec, uflow_res); 3272 if (err) 3273 goto err_free; 3274 3275 flow_attr->size += 3276 ((union ib_flow_spec *) ib_spec)->size; 3277 cmd.flow_attr.size -= kern_spec->size; 3278 kern_spec = ((void *)kern_spec) + kern_spec->size; 3279 ib_spec += ((union ib_flow_spec *) ib_spec)->size; 3280 } 3281 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) { 3282 pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n", 3283 i, cmd.flow_attr.size); 3284 err = -EINVAL; 3285 goto err_free; 3286 } 3287 3288 flow_id = qp->device->ops.create_flow( 3289 qp, flow_attr, IB_FLOW_DOMAIN_USER, &attrs->driver_udata); 3290 3291 if (IS_ERR(flow_id)) { 3292 err = PTR_ERR(flow_id); 3293 goto err_free; 3294 } 3295 3296 ib_set_flow(uobj, flow_id, qp, qp->device, uflow_res); 3297 3298 memset(&resp, 0, sizeof(resp)); 3299 resp.flow_handle = uobj->id; 3300 3301 err = uverbs_response(attrs, &resp, sizeof(resp)); 3302 if (err) 3303 goto err_copy; 3304 3305 uobj_put_obj_read(qp); 3306 kfree(flow_attr); 3307 if (cmd.flow_attr.num_of_specs) 3308 kfree(kern_flow_attr); 3309 return uobj_alloc_commit(uobj); 3310 err_copy: 3311 if (!qp->device->ops.destroy_flow(flow_id)) 3312 atomic_dec(&qp->usecnt); 3313 err_free: 3314 ib_uverbs_flow_resources_free(uflow_res); 3315 err_free_flow_attr: 3316 kfree(flow_attr); 3317 err_put: 3318 uobj_put_obj_read(qp); 3319 err_uobj: 3320 uobj_alloc_abort(uobj); 3321 err_free_attr: 3322 if (cmd.flow_attr.num_of_specs) 3323 kfree(kern_flow_attr); 3324 return err; 3325 } 3326 3327 static int ib_uverbs_ex_destroy_flow(struct uverbs_attr_bundle *attrs) 3328 { 3329 struct ib_uverbs_destroy_flow cmd; 3330 int ret; 3331 3332 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3333 if (ret) 3334 return ret; 3335 3336 if (cmd.comp_mask) 3337 return -EINVAL; 3338 3339 return uobj_perform_destroy(UVERBS_OBJECT_FLOW, cmd.flow_handle, attrs); 3340 } 3341 3342 static int __uverbs_create_xsrq(struct uverbs_attr_bundle *attrs, 3343 struct ib_uverbs_create_xsrq *cmd, 3344 struct ib_udata *udata) 3345 { 3346 struct ib_uverbs_create_srq_resp resp; 3347 struct ib_usrq_object *obj; 3348 struct ib_pd *pd; 3349 struct ib_srq *srq; 3350 struct ib_uobject *uninitialized_var(xrcd_uobj); 3351 struct ib_srq_init_attr attr; 3352 int ret; 3353 struct ib_device *ib_dev; 3354 3355 obj = (struct ib_usrq_object *)uobj_alloc(UVERBS_OBJECT_SRQ, attrs, 3356 &ib_dev); 3357 if (IS_ERR(obj)) 3358 return PTR_ERR(obj); 3359 3360 if (cmd->srq_type == IB_SRQT_TM) 3361 attr.ext.tag_matching.max_num_tags = cmd->max_num_tags; 3362 3363 if (cmd->srq_type == IB_SRQT_XRC) { 3364 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->xrcd_handle, 3365 attrs); 3366 if (IS_ERR(xrcd_uobj)) { 3367 ret = -EINVAL; 3368 goto err; 3369 } 3370 3371 attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object; 3372 if (!attr.ext.xrc.xrcd) { 3373 ret = -EINVAL; 3374 goto err_put_xrcd; 3375 } 3376 3377 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); 3378 atomic_inc(&obj->uxrcd->refcnt); 3379 } 3380 3381 if (ib_srq_has_cq(cmd->srq_type)) { 3382 attr.ext.cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, 3383 cmd->cq_handle, attrs); 3384 if (!attr.ext.cq) { 3385 ret = -EINVAL; 3386 goto err_put_xrcd; 3387 } 3388 } 3389 3390 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, attrs); 3391 if (!pd) { 3392 ret = -EINVAL; 3393 goto err_put_cq; 3394 } 3395 3396 attr.event_handler = ib_uverbs_srq_event_handler; 3397 attr.srq_context = attrs->ufile; 3398 attr.srq_type = cmd->srq_type; 3399 attr.attr.max_wr = cmd->max_wr; 3400 attr.attr.max_sge = cmd->max_sge; 3401 attr.attr.srq_limit = cmd->srq_limit; 3402 3403 obj->uevent.events_reported = 0; 3404 INIT_LIST_HEAD(&obj->uevent.event_list); 3405 3406 srq = pd->device->ops.create_srq(pd, &attr, udata); 3407 if (IS_ERR(srq)) { 3408 ret = PTR_ERR(srq); 3409 goto err_put; 3410 } 3411 3412 srq->device = pd->device; 3413 srq->pd = pd; 3414 srq->srq_type = cmd->srq_type; 3415 srq->uobject = &obj->uevent.uobject; 3416 srq->event_handler = attr.event_handler; 3417 srq->srq_context = attr.srq_context; 3418 3419 if (ib_srq_has_cq(cmd->srq_type)) { 3420 srq->ext.cq = attr.ext.cq; 3421 atomic_inc(&attr.ext.cq->usecnt); 3422 } 3423 3424 if (cmd->srq_type == IB_SRQT_XRC) { 3425 srq->ext.xrc.xrcd = attr.ext.xrc.xrcd; 3426 atomic_inc(&attr.ext.xrc.xrcd->usecnt); 3427 } 3428 3429 atomic_inc(&pd->usecnt); 3430 atomic_set(&srq->usecnt, 0); 3431 3432 obj->uevent.uobject.object = srq; 3433 obj->uevent.uobject.user_handle = cmd->user_handle; 3434 3435 memset(&resp, 0, sizeof resp); 3436 resp.srq_handle = obj->uevent.uobject.id; 3437 resp.max_wr = attr.attr.max_wr; 3438 resp.max_sge = attr.attr.max_sge; 3439 if (cmd->srq_type == IB_SRQT_XRC) 3440 resp.srqn = srq->ext.xrc.srq_num; 3441 3442 ret = uverbs_response(attrs, &resp, sizeof(resp)); 3443 if (ret) 3444 goto err_copy; 3445 3446 if (cmd->srq_type == IB_SRQT_XRC) 3447 uobj_put_read(xrcd_uobj); 3448 3449 if (ib_srq_has_cq(cmd->srq_type)) 3450 uobj_put_obj_read(attr.ext.cq); 3451 3452 uobj_put_obj_read(pd); 3453 return uobj_alloc_commit(&obj->uevent.uobject); 3454 3455 err_copy: 3456 ib_destroy_srq(srq); 3457 3458 err_put: 3459 uobj_put_obj_read(pd); 3460 3461 err_put_cq: 3462 if (ib_srq_has_cq(cmd->srq_type)) 3463 uobj_put_obj_read(attr.ext.cq); 3464 3465 err_put_xrcd: 3466 if (cmd->srq_type == IB_SRQT_XRC) { 3467 atomic_dec(&obj->uxrcd->refcnt); 3468 uobj_put_read(xrcd_uobj); 3469 } 3470 3471 err: 3472 uobj_alloc_abort(&obj->uevent.uobject); 3473 return ret; 3474 } 3475 3476 static int ib_uverbs_create_srq(struct uverbs_attr_bundle *attrs) 3477 { 3478 struct ib_uverbs_create_srq cmd; 3479 struct ib_uverbs_create_xsrq xcmd; 3480 int ret; 3481 3482 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3483 if (ret) 3484 return ret; 3485 3486 memset(&xcmd, 0, sizeof(xcmd)); 3487 xcmd.response = cmd.response; 3488 xcmd.user_handle = cmd.user_handle; 3489 xcmd.srq_type = IB_SRQT_BASIC; 3490 xcmd.pd_handle = cmd.pd_handle; 3491 xcmd.max_wr = cmd.max_wr; 3492 xcmd.max_sge = cmd.max_sge; 3493 xcmd.srq_limit = cmd.srq_limit; 3494 3495 return __uverbs_create_xsrq(attrs, &xcmd, &attrs->driver_udata); 3496 } 3497 3498 static int ib_uverbs_create_xsrq(struct uverbs_attr_bundle *attrs) 3499 { 3500 struct ib_uverbs_create_xsrq cmd; 3501 int ret; 3502 3503 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3504 if (ret) 3505 return ret; 3506 3507 return __uverbs_create_xsrq(attrs, &cmd, &attrs->driver_udata); 3508 } 3509 3510 static int ib_uverbs_modify_srq(struct uverbs_attr_bundle *attrs) 3511 { 3512 struct ib_uverbs_modify_srq cmd; 3513 struct ib_srq *srq; 3514 struct ib_srq_attr attr; 3515 int ret; 3516 3517 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3518 if (ret) 3519 return ret; 3520 3521 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 3522 if (!srq) 3523 return -EINVAL; 3524 3525 attr.max_wr = cmd.max_wr; 3526 attr.srq_limit = cmd.srq_limit; 3527 3528 ret = srq->device->ops.modify_srq(srq, &attr, cmd.attr_mask, 3529 &attrs->driver_udata); 3530 3531 uobj_put_obj_read(srq); 3532 3533 return ret; 3534 } 3535 3536 static int ib_uverbs_query_srq(struct uverbs_attr_bundle *attrs) 3537 { 3538 struct ib_uverbs_query_srq cmd; 3539 struct ib_uverbs_query_srq_resp resp; 3540 struct ib_srq_attr attr; 3541 struct ib_srq *srq; 3542 int ret; 3543 3544 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3545 if (ret) 3546 return ret; 3547 3548 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 3549 if (!srq) 3550 return -EINVAL; 3551 3552 ret = ib_query_srq(srq, &attr); 3553 3554 uobj_put_obj_read(srq); 3555 3556 if (ret) 3557 return ret; 3558 3559 memset(&resp, 0, sizeof resp); 3560 3561 resp.max_wr = attr.max_wr; 3562 resp.max_sge = attr.max_sge; 3563 resp.srq_limit = attr.srq_limit; 3564 3565 return uverbs_response(attrs, &resp, sizeof(resp)); 3566 } 3567 3568 static int ib_uverbs_destroy_srq(struct uverbs_attr_bundle *attrs) 3569 { 3570 struct ib_uverbs_destroy_srq cmd; 3571 struct ib_uverbs_destroy_srq_resp resp; 3572 struct ib_uobject *uobj; 3573 struct ib_uevent_object *obj; 3574 int ret; 3575 3576 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3577 if (ret) 3578 return ret; 3579 3580 uobj = uobj_get_destroy(UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 3581 if (IS_ERR(uobj)) 3582 return PTR_ERR(uobj); 3583 3584 obj = container_of(uobj, struct ib_uevent_object, uobject); 3585 memset(&resp, 0, sizeof(resp)); 3586 resp.events_reported = obj->events_reported; 3587 3588 uobj_put_destroy(uobj); 3589 3590 return uverbs_response(attrs, &resp, sizeof(resp)); 3591 } 3592 3593 static int ib_uverbs_ex_query_device(struct uverbs_attr_bundle *attrs) 3594 { 3595 struct ib_uverbs_ex_query_device_resp resp = {}; 3596 struct ib_uverbs_ex_query_device cmd; 3597 struct ib_device_attr attr = {0}; 3598 struct ib_ucontext *ucontext; 3599 struct ib_device *ib_dev; 3600 int err; 3601 3602 ucontext = ib_uverbs_get_ucontext(attrs); 3603 if (IS_ERR(ucontext)) 3604 return PTR_ERR(ucontext); 3605 ib_dev = ucontext->device; 3606 3607 err = uverbs_request(attrs, &cmd, sizeof(cmd)); 3608 if (err) 3609 return err; 3610 3611 if (cmd.comp_mask) 3612 return -EINVAL; 3613 3614 if (cmd.reserved) 3615 return -EINVAL; 3616 3617 err = ib_dev->ops.query_device(ib_dev, &attr, &attrs->driver_udata); 3618 if (err) 3619 return err; 3620 3621 copy_query_dev_fields(ucontext, &resp.base, &attr); 3622 3623 resp.odp_caps.general_caps = attr.odp_caps.general_caps; 3624 resp.odp_caps.per_transport_caps.rc_odp_caps = 3625 attr.odp_caps.per_transport_caps.rc_odp_caps; 3626 resp.odp_caps.per_transport_caps.uc_odp_caps = 3627 attr.odp_caps.per_transport_caps.uc_odp_caps; 3628 resp.odp_caps.per_transport_caps.ud_odp_caps = 3629 attr.odp_caps.per_transport_caps.ud_odp_caps; 3630 resp.xrc_odp_caps = attr.odp_caps.per_transport_caps.xrc_odp_caps; 3631 3632 resp.timestamp_mask = attr.timestamp_mask; 3633 resp.hca_core_clock = attr.hca_core_clock; 3634 resp.device_cap_flags_ex = attr.device_cap_flags; 3635 resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts; 3636 resp.rss_caps.max_rwq_indirection_tables = 3637 attr.rss_caps.max_rwq_indirection_tables; 3638 resp.rss_caps.max_rwq_indirection_table_size = 3639 attr.rss_caps.max_rwq_indirection_table_size; 3640 resp.max_wq_type_rq = attr.max_wq_type_rq; 3641 resp.raw_packet_caps = attr.raw_packet_caps; 3642 resp.tm_caps.max_rndv_hdr_size = attr.tm_caps.max_rndv_hdr_size; 3643 resp.tm_caps.max_num_tags = attr.tm_caps.max_num_tags; 3644 resp.tm_caps.max_ops = attr.tm_caps.max_ops; 3645 resp.tm_caps.max_sge = attr.tm_caps.max_sge; 3646 resp.tm_caps.flags = attr.tm_caps.flags; 3647 resp.cq_moderation_caps.max_cq_moderation_count = 3648 attr.cq_caps.max_cq_moderation_count; 3649 resp.cq_moderation_caps.max_cq_moderation_period = 3650 attr.cq_caps.max_cq_moderation_period; 3651 resp.max_dm_size = attr.max_dm_size; 3652 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 3653 3654 return uverbs_response(attrs, &resp, sizeof(resp)); 3655 } 3656 3657 static int ib_uverbs_ex_modify_cq(struct uverbs_attr_bundle *attrs) 3658 { 3659 struct ib_uverbs_ex_modify_cq cmd; 3660 struct ib_cq *cq; 3661 int ret; 3662 3663 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3664 if (ret) 3665 return ret; 3666 3667 if (!cmd.attr_mask || cmd.reserved) 3668 return -EINVAL; 3669 3670 if (cmd.attr_mask > IB_CQ_MODERATE) 3671 return -EOPNOTSUPP; 3672 3673 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 3674 if (!cq) 3675 return -EINVAL; 3676 3677 ret = rdma_set_cq_moderation(cq, cmd.attr.cq_count, cmd.attr.cq_period); 3678 3679 uobj_put_obj_read(cq); 3680 3681 return ret; 3682 } 3683 3684 /* 3685 * Describe the input structs for write(). Some write methods have an input 3686 * only struct, most have an input and output. If the struct has an output then 3687 * the 'response' u64 must be the first field in the request structure. 3688 * 3689 * If udata is present then both the request and response structs have a 3690 * trailing driver_data flex array. In this case the size of the base struct 3691 * cannot be changed. 3692 */ 3693 #define offsetof_after(_struct, _member) \ 3694 (offsetof(_struct, _member) + sizeof(((_struct *)NULL)->_member)) 3695 3696 #define UAPI_DEF_WRITE_IO(req, resp) \ 3697 .write.has_resp = 1 + \ 3698 BUILD_BUG_ON_ZERO(offsetof(req, response) != 0) + \ 3699 BUILD_BUG_ON_ZERO(sizeof(((req *)0)->response) != \ 3700 sizeof(u64)), \ 3701 .write.req_size = sizeof(req), .write.resp_size = sizeof(resp) 3702 3703 #define UAPI_DEF_WRITE_I(req) .write.req_size = sizeof(req) 3704 3705 #define UAPI_DEF_WRITE_UDATA_IO(req, resp) \ 3706 UAPI_DEF_WRITE_IO(req, resp), \ 3707 .write.has_udata = \ 3708 1 + \ 3709 BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \ 3710 sizeof(req)) + \ 3711 BUILD_BUG_ON_ZERO(offsetof(resp, driver_data) != \ 3712 sizeof(resp)) 3713 3714 #define UAPI_DEF_WRITE_UDATA_I(req) \ 3715 UAPI_DEF_WRITE_I(req), \ 3716 .write.has_udata = \ 3717 1 + BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \ 3718 sizeof(req)) 3719 3720 /* 3721 * The _EX versions are for use with WRITE_EX and allow the last struct member 3722 * to be specified. Buffers that do not include that member will be rejected. 3723 */ 3724 #define UAPI_DEF_WRITE_IO_EX(req, req_last_member, resp, resp_last_member) \ 3725 .write.has_resp = 1, \ 3726 .write.req_size = offsetof_after(req, req_last_member), \ 3727 .write.resp_size = offsetof_after(resp, resp_last_member) 3728 3729 #define UAPI_DEF_WRITE_I_EX(req, req_last_member) \ 3730 .write.req_size = offsetof_after(req, req_last_member) 3731 3732 const struct uapi_definition uverbs_def_write_intf[] = { 3733 DECLARE_UVERBS_OBJECT( 3734 UVERBS_OBJECT_AH, 3735 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_AH, 3736 ib_uverbs_create_ah, 3737 UAPI_DEF_WRITE_UDATA_IO( 3738 struct ib_uverbs_create_ah, 3739 struct ib_uverbs_create_ah_resp), 3740 UAPI_DEF_METHOD_NEEDS_FN(create_ah)), 3741 DECLARE_UVERBS_WRITE( 3742 IB_USER_VERBS_CMD_DESTROY_AH, 3743 ib_uverbs_destroy_ah, 3744 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_ah), 3745 UAPI_DEF_METHOD_NEEDS_FN(destroy_ah))), 3746 3747 DECLARE_UVERBS_OBJECT( 3748 UVERBS_OBJECT_COMP_CHANNEL, 3749 DECLARE_UVERBS_WRITE( 3750 IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL, 3751 ib_uverbs_create_comp_channel, 3752 UAPI_DEF_WRITE_IO( 3753 struct ib_uverbs_create_comp_channel, 3754 struct ib_uverbs_create_comp_channel_resp))), 3755 3756 DECLARE_UVERBS_OBJECT( 3757 UVERBS_OBJECT_CQ, 3758 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_CQ, 3759 ib_uverbs_create_cq, 3760 UAPI_DEF_WRITE_UDATA_IO( 3761 struct ib_uverbs_create_cq, 3762 struct ib_uverbs_create_cq_resp), 3763 UAPI_DEF_METHOD_NEEDS_FN(create_cq)), 3764 DECLARE_UVERBS_WRITE( 3765 IB_USER_VERBS_CMD_DESTROY_CQ, 3766 ib_uverbs_destroy_cq, 3767 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_cq, 3768 struct ib_uverbs_destroy_cq_resp), 3769 UAPI_DEF_METHOD_NEEDS_FN(destroy_cq)), 3770 DECLARE_UVERBS_WRITE( 3771 IB_USER_VERBS_CMD_POLL_CQ, 3772 ib_uverbs_poll_cq, 3773 UAPI_DEF_WRITE_IO(struct ib_uverbs_poll_cq, 3774 struct ib_uverbs_poll_cq_resp), 3775 UAPI_DEF_METHOD_NEEDS_FN(poll_cq)), 3776 DECLARE_UVERBS_WRITE( 3777 IB_USER_VERBS_CMD_REQ_NOTIFY_CQ, 3778 ib_uverbs_req_notify_cq, 3779 UAPI_DEF_WRITE_I(struct ib_uverbs_req_notify_cq), 3780 UAPI_DEF_METHOD_NEEDS_FN(req_notify_cq)), 3781 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_RESIZE_CQ, 3782 ib_uverbs_resize_cq, 3783 UAPI_DEF_WRITE_UDATA_IO( 3784 struct ib_uverbs_resize_cq, 3785 struct ib_uverbs_resize_cq_resp), 3786 UAPI_DEF_METHOD_NEEDS_FN(resize_cq)), 3787 DECLARE_UVERBS_WRITE_EX( 3788 IB_USER_VERBS_EX_CMD_CREATE_CQ, 3789 ib_uverbs_ex_create_cq, 3790 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_cq, 3791 reserved, 3792 struct ib_uverbs_ex_create_cq_resp, 3793 response_length), 3794 UAPI_DEF_METHOD_NEEDS_FN(create_cq)), 3795 DECLARE_UVERBS_WRITE_EX( 3796 IB_USER_VERBS_EX_CMD_MODIFY_CQ, 3797 ib_uverbs_ex_modify_cq, 3798 UAPI_DEF_WRITE_I(struct ib_uverbs_ex_modify_cq), 3799 UAPI_DEF_METHOD_NEEDS_FN(create_cq))), 3800 3801 DECLARE_UVERBS_OBJECT( 3802 UVERBS_OBJECT_DEVICE, 3803 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_GET_CONTEXT, 3804 ib_uverbs_get_context, 3805 UAPI_DEF_WRITE_UDATA_IO( 3806 struct ib_uverbs_get_context, 3807 struct ib_uverbs_get_context_resp)), 3808 DECLARE_UVERBS_WRITE( 3809 IB_USER_VERBS_CMD_QUERY_DEVICE, 3810 ib_uverbs_query_device, 3811 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_device, 3812 struct ib_uverbs_query_device_resp)), 3813 DECLARE_UVERBS_WRITE( 3814 IB_USER_VERBS_CMD_QUERY_PORT, 3815 ib_uverbs_query_port, 3816 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_port, 3817 struct ib_uverbs_query_port_resp), 3818 UAPI_DEF_METHOD_NEEDS_FN(query_port)), 3819 DECLARE_UVERBS_WRITE_EX( 3820 IB_USER_VERBS_EX_CMD_QUERY_DEVICE, 3821 ib_uverbs_ex_query_device, 3822 UAPI_DEF_WRITE_IO_EX( 3823 struct ib_uverbs_ex_query_device, 3824 reserved, 3825 struct ib_uverbs_ex_query_device_resp, 3826 response_length), 3827 UAPI_DEF_METHOD_NEEDS_FN(query_device)), 3828 UAPI_DEF_OBJ_NEEDS_FN(alloc_ucontext), 3829 UAPI_DEF_OBJ_NEEDS_FN(dealloc_ucontext)), 3830 3831 DECLARE_UVERBS_OBJECT( 3832 UVERBS_OBJECT_FLOW, 3833 DECLARE_UVERBS_WRITE_EX( 3834 IB_USER_VERBS_EX_CMD_CREATE_FLOW, 3835 ib_uverbs_ex_create_flow, 3836 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_create_flow, 3837 flow_attr, 3838 struct ib_uverbs_create_flow_resp, 3839 flow_handle), 3840 UAPI_DEF_METHOD_NEEDS_FN(create_flow)), 3841 DECLARE_UVERBS_WRITE_EX( 3842 IB_USER_VERBS_EX_CMD_DESTROY_FLOW, 3843 ib_uverbs_ex_destroy_flow, 3844 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_flow), 3845 UAPI_DEF_METHOD_NEEDS_FN(destroy_flow))), 3846 3847 DECLARE_UVERBS_OBJECT( 3848 UVERBS_OBJECT_MR, 3849 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_DEREG_MR, 3850 ib_uverbs_dereg_mr, 3851 UAPI_DEF_WRITE_I(struct ib_uverbs_dereg_mr), 3852 UAPI_DEF_METHOD_NEEDS_FN(dereg_mr)), 3853 DECLARE_UVERBS_WRITE( 3854 IB_USER_VERBS_CMD_REG_MR, 3855 ib_uverbs_reg_mr, 3856 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_reg_mr, 3857 struct ib_uverbs_reg_mr_resp), 3858 UAPI_DEF_METHOD_NEEDS_FN(reg_user_mr)), 3859 DECLARE_UVERBS_WRITE( 3860 IB_USER_VERBS_CMD_REREG_MR, 3861 ib_uverbs_rereg_mr, 3862 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_rereg_mr, 3863 struct ib_uverbs_rereg_mr_resp), 3864 UAPI_DEF_METHOD_NEEDS_FN(rereg_user_mr))), 3865 3866 DECLARE_UVERBS_OBJECT( 3867 UVERBS_OBJECT_MW, 3868 DECLARE_UVERBS_WRITE( 3869 IB_USER_VERBS_CMD_ALLOC_MW, 3870 ib_uverbs_alloc_mw, 3871 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_mw, 3872 struct ib_uverbs_alloc_mw_resp), 3873 UAPI_DEF_METHOD_NEEDS_FN(alloc_mw)), 3874 DECLARE_UVERBS_WRITE( 3875 IB_USER_VERBS_CMD_DEALLOC_MW, 3876 ib_uverbs_dealloc_mw, 3877 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_mw), 3878 UAPI_DEF_METHOD_NEEDS_FN(dealloc_mw))), 3879 3880 DECLARE_UVERBS_OBJECT( 3881 UVERBS_OBJECT_PD, 3882 DECLARE_UVERBS_WRITE( 3883 IB_USER_VERBS_CMD_ALLOC_PD, 3884 ib_uverbs_alloc_pd, 3885 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_pd, 3886 struct ib_uverbs_alloc_pd_resp), 3887 UAPI_DEF_METHOD_NEEDS_FN(alloc_pd)), 3888 DECLARE_UVERBS_WRITE( 3889 IB_USER_VERBS_CMD_DEALLOC_PD, 3890 ib_uverbs_dealloc_pd, 3891 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_pd), 3892 UAPI_DEF_METHOD_NEEDS_FN(dealloc_pd))), 3893 3894 DECLARE_UVERBS_OBJECT( 3895 UVERBS_OBJECT_QP, 3896 DECLARE_UVERBS_WRITE( 3897 IB_USER_VERBS_CMD_ATTACH_MCAST, 3898 ib_uverbs_attach_mcast, 3899 UAPI_DEF_WRITE_I(struct ib_uverbs_attach_mcast), 3900 UAPI_DEF_METHOD_NEEDS_FN(attach_mcast), 3901 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)), 3902 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_QP, 3903 ib_uverbs_create_qp, 3904 UAPI_DEF_WRITE_UDATA_IO( 3905 struct ib_uverbs_create_qp, 3906 struct ib_uverbs_create_qp_resp), 3907 UAPI_DEF_METHOD_NEEDS_FN(create_qp)), 3908 DECLARE_UVERBS_WRITE( 3909 IB_USER_VERBS_CMD_DESTROY_QP, 3910 ib_uverbs_destroy_qp, 3911 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_qp, 3912 struct ib_uverbs_destroy_qp_resp), 3913 UAPI_DEF_METHOD_NEEDS_FN(destroy_qp)), 3914 DECLARE_UVERBS_WRITE( 3915 IB_USER_VERBS_CMD_DETACH_MCAST, 3916 ib_uverbs_detach_mcast, 3917 UAPI_DEF_WRITE_I(struct ib_uverbs_detach_mcast), 3918 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)), 3919 DECLARE_UVERBS_WRITE( 3920 IB_USER_VERBS_CMD_MODIFY_QP, 3921 ib_uverbs_modify_qp, 3922 UAPI_DEF_WRITE_I(struct ib_uverbs_modify_qp), 3923 UAPI_DEF_METHOD_NEEDS_FN(modify_qp)), 3924 DECLARE_UVERBS_WRITE( 3925 IB_USER_VERBS_CMD_POST_RECV, 3926 ib_uverbs_post_recv, 3927 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_recv, 3928 struct ib_uverbs_post_recv_resp), 3929 UAPI_DEF_METHOD_NEEDS_FN(post_recv)), 3930 DECLARE_UVERBS_WRITE( 3931 IB_USER_VERBS_CMD_POST_SEND, 3932 ib_uverbs_post_send, 3933 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_send, 3934 struct ib_uverbs_post_send_resp), 3935 UAPI_DEF_METHOD_NEEDS_FN(post_send)), 3936 DECLARE_UVERBS_WRITE( 3937 IB_USER_VERBS_CMD_QUERY_QP, 3938 ib_uverbs_query_qp, 3939 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_qp, 3940 struct ib_uverbs_query_qp_resp), 3941 UAPI_DEF_METHOD_NEEDS_FN(query_qp)), 3942 DECLARE_UVERBS_WRITE_EX( 3943 IB_USER_VERBS_EX_CMD_CREATE_QP, 3944 ib_uverbs_ex_create_qp, 3945 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_qp, 3946 comp_mask, 3947 struct ib_uverbs_ex_create_qp_resp, 3948 response_length), 3949 UAPI_DEF_METHOD_NEEDS_FN(create_qp)), 3950 DECLARE_UVERBS_WRITE_EX( 3951 IB_USER_VERBS_EX_CMD_MODIFY_QP, 3952 ib_uverbs_ex_modify_qp, 3953 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_modify_qp, 3954 base, 3955 struct ib_uverbs_ex_modify_qp_resp, 3956 response_length), 3957 UAPI_DEF_METHOD_NEEDS_FN(modify_qp))), 3958 3959 DECLARE_UVERBS_OBJECT( 3960 UVERBS_OBJECT_RWQ_IND_TBL, 3961 DECLARE_UVERBS_WRITE_EX( 3962 IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL, 3963 ib_uverbs_ex_create_rwq_ind_table, 3964 UAPI_DEF_WRITE_IO_EX( 3965 struct ib_uverbs_ex_create_rwq_ind_table, 3966 log_ind_tbl_size, 3967 struct ib_uverbs_ex_create_rwq_ind_table_resp, 3968 ind_tbl_num), 3969 UAPI_DEF_METHOD_NEEDS_FN(create_rwq_ind_table)), 3970 DECLARE_UVERBS_WRITE_EX( 3971 IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL, 3972 ib_uverbs_ex_destroy_rwq_ind_table, 3973 UAPI_DEF_WRITE_I( 3974 struct ib_uverbs_ex_destroy_rwq_ind_table), 3975 UAPI_DEF_METHOD_NEEDS_FN(destroy_rwq_ind_table))), 3976 3977 DECLARE_UVERBS_OBJECT( 3978 UVERBS_OBJECT_WQ, 3979 DECLARE_UVERBS_WRITE_EX( 3980 IB_USER_VERBS_EX_CMD_CREATE_WQ, 3981 ib_uverbs_ex_create_wq, 3982 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_wq, 3983 max_sge, 3984 struct ib_uverbs_ex_create_wq_resp, 3985 wqn), 3986 UAPI_DEF_METHOD_NEEDS_FN(create_wq)), 3987 DECLARE_UVERBS_WRITE_EX( 3988 IB_USER_VERBS_EX_CMD_DESTROY_WQ, 3989 ib_uverbs_ex_destroy_wq, 3990 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_destroy_wq, 3991 wq_handle, 3992 struct ib_uverbs_ex_destroy_wq_resp, 3993 reserved), 3994 UAPI_DEF_METHOD_NEEDS_FN(destroy_wq)), 3995 DECLARE_UVERBS_WRITE_EX( 3996 IB_USER_VERBS_EX_CMD_MODIFY_WQ, 3997 ib_uverbs_ex_modify_wq, 3998 UAPI_DEF_WRITE_I_EX(struct ib_uverbs_ex_modify_wq, 3999 curr_wq_state), 4000 UAPI_DEF_METHOD_NEEDS_FN(modify_wq))), 4001 4002 DECLARE_UVERBS_OBJECT( 4003 UVERBS_OBJECT_SRQ, 4004 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_SRQ, 4005 ib_uverbs_create_srq, 4006 UAPI_DEF_WRITE_UDATA_IO( 4007 struct ib_uverbs_create_srq, 4008 struct ib_uverbs_create_srq_resp), 4009 UAPI_DEF_METHOD_NEEDS_FN(create_srq)), 4010 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_XSRQ, 4011 ib_uverbs_create_xsrq, 4012 UAPI_DEF_WRITE_UDATA_IO( 4013 struct ib_uverbs_create_xsrq, 4014 struct ib_uverbs_create_srq_resp), 4015 UAPI_DEF_METHOD_NEEDS_FN(create_srq)), 4016 DECLARE_UVERBS_WRITE( 4017 IB_USER_VERBS_CMD_DESTROY_SRQ, 4018 ib_uverbs_destroy_srq, 4019 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_srq, 4020 struct ib_uverbs_destroy_srq_resp), 4021 UAPI_DEF_METHOD_NEEDS_FN(destroy_srq)), 4022 DECLARE_UVERBS_WRITE( 4023 IB_USER_VERBS_CMD_MODIFY_SRQ, 4024 ib_uverbs_modify_srq, 4025 UAPI_DEF_WRITE_UDATA_I(struct ib_uverbs_modify_srq), 4026 UAPI_DEF_METHOD_NEEDS_FN(modify_srq)), 4027 DECLARE_UVERBS_WRITE( 4028 IB_USER_VERBS_CMD_POST_SRQ_RECV, 4029 ib_uverbs_post_srq_recv, 4030 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_srq_recv, 4031 struct ib_uverbs_post_srq_recv_resp), 4032 UAPI_DEF_METHOD_NEEDS_FN(post_srq_recv)), 4033 DECLARE_UVERBS_WRITE( 4034 IB_USER_VERBS_CMD_QUERY_SRQ, 4035 ib_uverbs_query_srq, 4036 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_srq, 4037 struct ib_uverbs_query_srq_resp), 4038 UAPI_DEF_METHOD_NEEDS_FN(query_srq))), 4039 4040 DECLARE_UVERBS_OBJECT( 4041 UVERBS_OBJECT_XRCD, 4042 DECLARE_UVERBS_WRITE( 4043 IB_USER_VERBS_CMD_CLOSE_XRCD, 4044 ib_uverbs_close_xrcd, 4045 UAPI_DEF_WRITE_I(struct ib_uverbs_close_xrcd), 4046 UAPI_DEF_METHOD_NEEDS_FN(dealloc_xrcd)), 4047 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_QP, 4048 ib_uverbs_open_qp, 4049 UAPI_DEF_WRITE_UDATA_IO( 4050 struct ib_uverbs_open_qp, 4051 struct ib_uverbs_create_qp_resp)), 4052 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_XRCD, 4053 ib_uverbs_open_xrcd, 4054 UAPI_DEF_WRITE_UDATA_IO( 4055 struct ib_uverbs_open_xrcd, 4056 struct ib_uverbs_open_xrcd_resp), 4057 UAPI_DEF_METHOD_NEEDS_FN(alloc_xrcd))), 4058 4059 {}, 4060 }; 4061