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 (void __force __user *)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 /* 178 * When calling a destroy function during an error unwind we need to pass in 179 * the udata that is sanitized of all user arguments. Ie from the driver 180 * perspective it looks like no udata was passed. 181 */ 182 struct ib_udata *uverbs_get_cleared_udata(struct uverbs_attr_bundle *attrs) 183 { 184 attrs->driver_udata = (struct ib_udata){}; 185 return &attrs->driver_udata; 186 } 187 188 static struct ib_uverbs_completion_event_file * 189 _ib_uverbs_lookup_comp_file(s32 fd, struct uverbs_attr_bundle *attrs) 190 { 191 struct ib_uobject *uobj = ufd_get_read(UVERBS_OBJECT_COMP_CHANNEL, 192 fd, attrs); 193 194 if (IS_ERR(uobj)) 195 return (void *)uobj; 196 197 uverbs_uobject_get(uobj); 198 uobj_put_read(uobj); 199 200 return container_of(uobj, struct ib_uverbs_completion_event_file, 201 uobj); 202 } 203 #define ib_uverbs_lookup_comp_file(_fd, _ufile) \ 204 _ib_uverbs_lookup_comp_file((_fd)*typecheck(s32, _fd), _ufile) 205 206 int ib_alloc_ucontext(struct uverbs_attr_bundle *attrs) 207 { 208 struct ib_uverbs_file *ufile = attrs->ufile; 209 struct ib_ucontext *ucontext; 210 struct ib_device *ib_dev; 211 212 ib_dev = srcu_dereference(ufile->device->ib_dev, 213 &ufile->device->disassociate_srcu); 214 if (!ib_dev) 215 return -EIO; 216 217 ucontext = rdma_zalloc_drv_obj(ib_dev, ib_ucontext); 218 if (!ucontext) 219 return -ENOMEM; 220 221 ucontext->res.type = RDMA_RESTRACK_CTX; 222 ucontext->device = ib_dev; 223 ucontext->ufile = ufile; 224 xa_init_flags(&ucontext->mmap_xa, XA_FLAGS_ALLOC); 225 attrs->context = ucontext; 226 return 0; 227 } 228 229 int ib_init_ucontext(struct uverbs_attr_bundle *attrs) 230 { 231 struct ib_ucontext *ucontext = attrs->context; 232 struct ib_uverbs_file *file = attrs->ufile; 233 int ret; 234 235 if (!down_read_trylock(&file->hw_destroy_rwsem)) 236 return -EIO; 237 mutex_lock(&file->ucontext_lock); 238 if (file->ucontext) { 239 ret = -EINVAL; 240 goto err; 241 } 242 243 ret = ib_rdmacg_try_charge(&ucontext->cg_obj, ucontext->device, 244 RDMACG_RESOURCE_HCA_HANDLE); 245 if (ret) 246 goto err; 247 248 ret = ucontext->device->ops.alloc_ucontext(ucontext, 249 &attrs->driver_udata); 250 if (ret) 251 goto err_uncharge; 252 253 rdma_restrack_uadd(&ucontext->res); 254 255 /* 256 * Make sure that ib_uverbs_get_ucontext() sees the pointer update 257 * only after all writes to setup the ucontext have completed 258 */ 259 smp_store_release(&file->ucontext, ucontext); 260 261 mutex_unlock(&file->ucontext_lock); 262 up_read(&file->hw_destroy_rwsem); 263 return 0; 264 265 err_uncharge: 266 ib_rdmacg_uncharge(&ucontext->cg_obj, ucontext->device, 267 RDMACG_RESOURCE_HCA_HANDLE); 268 err: 269 mutex_unlock(&file->ucontext_lock); 270 up_read(&file->hw_destroy_rwsem); 271 return ret; 272 } 273 274 static int ib_uverbs_get_context(struct uverbs_attr_bundle *attrs) 275 { 276 struct ib_uverbs_get_context_resp resp; 277 struct ib_uverbs_get_context cmd; 278 struct ib_device *ib_dev; 279 struct ib_uobject *uobj; 280 int ret; 281 282 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 283 if (ret) 284 return ret; 285 286 ret = ib_alloc_ucontext(attrs); 287 if (ret) 288 return ret; 289 290 uobj = uobj_alloc(UVERBS_OBJECT_ASYNC_EVENT, attrs, &ib_dev); 291 if (IS_ERR(uobj)) { 292 ret = PTR_ERR(uobj); 293 goto err_ucontext; 294 } 295 296 resp = (struct ib_uverbs_get_context_resp){ 297 .num_comp_vectors = attrs->ufile->device->num_comp_vectors, 298 .async_fd = uobj->id, 299 }; 300 ret = uverbs_response(attrs, &resp, sizeof(resp)); 301 if (ret) 302 goto err_uobj; 303 304 ret = ib_init_ucontext(attrs); 305 if (ret) 306 goto err_uobj; 307 308 ib_uverbs_init_async_event_file( 309 container_of(uobj, struct ib_uverbs_async_event_file, uobj)); 310 rdma_alloc_commit_uobject(uobj, attrs); 311 return 0; 312 313 err_uobj: 314 rdma_alloc_abort_uobject(uobj, attrs, false); 315 err_ucontext: 316 kfree(attrs->context); 317 attrs->context = NULL; 318 return ret; 319 } 320 321 static void copy_query_dev_fields(struct ib_ucontext *ucontext, 322 struct ib_uverbs_query_device_resp *resp, 323 struct ib_device_attr *attr) 324 { 325 struct ib_device *ib_dev = ucontext->device; 326 327 resp->fw_ver = attr->fw_ver; 328 resp->node_guid = ib_dev->node_guid; 329 resp->sys_image_guid = attr->sys_image_guid; 330 resp->max_mr_size = attr->max_mr_size; 331 resp->page_size_cap = attr->page_size_cap; 332 resp->vendor_id = attr->vendor_id; 333 resp->vendor_part_id = attr->vendor_part_id; 334 resp->hw_ver = attr->hw_ver; 335 resp->max_qp = attr->max_qp; 336 resp->max_qp_wr = attr->max_qp_wr; 337 resp->device_cap_flags = lower_32_bits(attr->device_cap_flags); 338 resp->max_sge = min(attr->max_send_sge, attr->max_recv_sge); 339 resp->max_sge_rd = attr->max_sge_rd; 340 resp->max_cq = attr->max_cq; 341 resp->max_cqe = attr->max_cqe; 342 resp->max_mr = attr->max_mr; 343 resp->max_pd = attr->max_pd; 344 resp->max_qp_rd_atom = attr->max_qp_rd_atom; 345 resp->max_ee_rd_atom = attr->max_ee_rd_atom; 346 resp->max_res_rd_atom = attr->max_res_rd_atom; 347 resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom; 348 resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom; 349 resp->atomic_cap = attr->atomic_cap; 350 resp->max_ee = attr->max_ee; 351 resp->max_rdd = attr->max_rdd; 352 resp->max_mw = attr->max_mw; 353 resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp; 354 resp->max_raw_ethy_qp = attr->max_raw_ethy_qp; 355 resp->max_mcast_grp = attr->max_mcast_grp; 356 resp->max_mcast_qp_attach = attr->max_mcast_qp_attach; 357 resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach; 358 resp->max_ah = attr->max_ah; 359 resp->max_srq = attr->max_srq; 360 resp->max_srq_wr = attr->max_srq_wr; 361 resp->max_srq_sge = attr->max_srq_sge; 362 resp->max_pkeys = attr->max_pkeys; 363 resp->local_ca_ack_delay = attr->local_ca_ack_delay; 364 resp->phys_port_cnt = ib_dev->phys_port_cnt; 365 } 366 367 static int ib_uverbs_query_device(struct uverbs_attr_bundle *attrs) 368 { 369 struct ib_uverbs_query_device cmd; 370 struct ib_uverbs_query_device_resp resp; 371 struct ib_ucontext *ucontext; 372 int ret; 373 374 ucontext = ib_uverbs_get_ucontext(attrs); 375 if (IS_ERR(ucontext)) 376 return PTR_ERR(ucontext); 377 378 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 379 if (ret) 380 return ret; 381 382 memset(&resp, 0, sizeof resp); 383 copy_query_dev_fields(ucontext, &resp, &ucontext->device->attrs); 384 385 return uverbs_response(attrs, &resp, sizeof(resp)); 386 } 387 388 static int ib_uverbs_query_port(struct uverbs_attr_bundle *attrs) 389 { 390 struct ib_uverbs_query_port cmd; 391 struct ib_uverbs_query_port_resp resp; 392 struct ib_port_attr attr; 393 int ret; 394 struct ib_ucontext *ucontext; 395 struct ib_device *ib_dev; 396 397 ucontext = ib_uverbs_get_ucontext(attrs); 398 if (IS_ERR(ucontext)) 399 return PTR_ERR(ucontext); 400 ib_dev = ucontext->device; 401 402 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 403 if (ret) 404 return ret; 405 406 ret = ib_query_port(ib_dev, cmd.port_num, &attr); 407 if (ret) 408 return ret; 409 410 memset(&resp, 0, sizeof resp); 411 copy_port_attr_to_resp(&attr, &resp, ib_dev, cmd.port_num); 412 413 return uverbs_response(attrs, &resp, sizeof(resp)); 414 } 415 416 static int ib_uverbs_alloc_pd(struct uverbs_attr_bundle *attrs) 417 { 418 struct ib_uverbs_alloc_pd_resp resp = {}; 419 struct ib_uverbs_alloc_pd cmd; 420 struct ib_uobject *uobj; 421 struct ib_pd *pd; 422 int ret; 423 struct ib_device *ib_dev; 424 425 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 426 if (ret) 427 return ret; 428 429 uobj = uobj_alloc(UVERBS_OBJECT_PD, attrs, &ib_dev); 430 if (IS_ERR(uobj)) 431 return PTR_ERR(uobj); 432 433 pd = rdma_zalloc_drv_obj(ib_dev, ib_pd); 434 if (!pd) { 435 ret = -ENOMEM; 436 goto err; 437 } 438 439 pd->device = ib_dev; 440 pd->uobject = uobj; 441 atomic_set(&pd->usecnt, 0); 442 pd->res.type = RDMA_RESTRACK_PD; 443 444 ret = ib_dev->ops.alloc_pd(pd, &attrs->driver_udata); 445 if (ret) 446 goto err_alloc; 447 rdma_restrack_uadd(&pd->res); 448 449 uobj->object = pd; 450 uobj_finalize_uobj_create(uobj, attrs); 451 452 resp.pd_handle = uobj->id; 453 return uverbs_response(attrs, &resp, sizeof(resp)); 454 455 err_alloc: 456 kfree(pd); 457 err: 458 uobj_alloc_abort(uobj, attrs); 459 return ret; 460 } 461 462 static int ib_uverbs_dealloc_pd(struct uverbs_attr_bundle *attrs) 463 { 464 struct ib_uverbs_dealloc_pd cmd; 465 int ret; 466 467 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 468 if (ret) 469 return ret; 470 471 return uobj_perform_destroy(UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 472 } 473 474 struct xrcd_table_entry { 475 struct rb_node node; 476 struct ib_xrcd *xrcd; 477 struct inode *inode; 478 }; 479 480 static int xrcd_table_insert(struct ib_uverbs_device *dev, 481 struct inode *inode, 482 struct ib_xrcd *xrcd) 483 { 484 struct xrcd_table_entry *entry, *scan; 485 struct rb_node **p = &dev->xrcd_tree.rb_node; 486 struct rb_node *parent = NULL; 487 488 entry = kmalloc(sizeof *entry, GFP_KERNEL); 489 if (!entry) 490 return -ENOMEM; 491 492 entry->xrcd = xrcd; 493 entry->inode = inode; 494 495 while (*p) { 496 parent = *p; 497 scan = rb_entry(parent, struct xrcd_table_entry, node); 498 499 if (inode < scan->inode) { 500 p = &(*p)->rb_left; 501 } else if (inode > scan->inode) { 502 p = &(*p)->rb_right; 503 } else { 504 kfree(entry); 505 return -EEXIST; 506 } 507 } 508 509 rb_link_node(&entry->node, parent, p); 510 rb_insert_color(&entry->node, &dev->xrcd_tree); 511 igrab(inode); 512 return 0; 513 } 514 515 static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev, 516 struct inode *inode) 517 { 518 struct xrcd_table_entry *entry; 519 struct rb_node *p = dev->xrcd_tree.rb_node; 520 521 while (p) { 522 entry = rb_entry(p, struct xrcd_table_entry, node); 523 524 if (inode < entry->inode) 525 p = p->rb_left; 526 else if (inode > entry->inode) 527 p = p->rb_right; 528 else 529 return entry; 530 } 531 532 return NULL; 533 } 534 535 static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode) 536 { 537 struct xrcd_table_entry *entry; 538 539 entry = xrcd_table_search(dev, inode); 540 if (!entry) 541 return NULL; 542 543 return entry->xrcd; 544 } 545 546 static void xrcd_table_delete(struct ib_uverbs_device *dev, 547 struct inode *inode) 548 { 549 struct xrcd_table_entry *entry; 550 551 entry = xrcd_table_search(dev, inode); 552 if (entry) { 553 iput(inode); 554 rb_erase(&entry->node, &dev->xrcd_tree); 555 kfree(entry); 556 } 557 } 558 559 static int ib_uverbs_open_xrcd(struct uverbs_attr_bundle *attrs) 560 { 561 struct ib_uverbs_device *ibudev = attrs->ufile->device; 562 struct ib_uverbs_open_xrcd_resp resp = {}; 563 struct ib_uverbs_open_xrcd cmd; 564 struct ib_uxrcd_object *obj; 565 struct ib_xrcd *xrcd = NULL; 566 struct inode *inode = NULL; 567 int new_xrcd = 0; 568 struct ib_device *ib_dev; 569 struct fd f = {}; 570 int ret; 571 572 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 573 if (ret) 574 return ret; 575 576 mutex_lock(&ibudev->xrcd_tree_mutex); 577 578 if (cmd.fd != -1) { 579 /* search for file descriptor */ 580 f = fdget(cmd.fd); 581 if (!f.file) { 582 ret = -EBADF; 583 goto err_tree_mutex_unlock; 584 } 585 586 inode = file_inode(f.file); 587 xrcd = find_xrcd(ibudev, inode); 588 if (!xrcd && !(cmd.oflags & O_CREAT)) { 589 /* no file descriptor. Need CREATE flag */ 590 ret = -EAGAIN; 591 goto err_tree_mutex_unlock; 592 } 593 594 if (xrcd && cmd.oflags & O_EXCL) { 595 ret = -EINVAL; 596 goto err_tree_mutex_unlock; 597 } 598 } 599 600 obj = (struct ib_uxrcd_object *)uobj_alloc(UVERBS_OBJECT_XRCD, attrs, 601 &ib_dev); 602 if (IS_ERR(obj)) { 603 ret = PTR_ERR(obj); 604 goto err_tree_mutex_unlock; 605 } 606 607 if (!xrcd) { 608 xrcd = ib_alloc_xrcd_user(ib_dev, inode, &attrs->driver_udata); 609 if (IS_ERR(xrcd)) { 610 ret = PTR_ERR(xrcd); 611 goto err; 612 } 613 new_xrcd = 1; 614 } 615 616 atomic_set(&obj->refcnt, 0); 617 obj->uobject.object = xrcd; 618 619 if (inode) { 620 if (new_xrcd) { 621 /* create new inode/xrcd table entry */ 622 ret = xrcd_table_insert(ibudev, inode, xrcd); 623 if (ret) 624 goto err_dealloc_xrcd; 625 } 626 atomic_inc(&xrcd->usecnt); 627 } 628 629 if (f.file) 630 fdput(f); 631 632 mutex_unlock(&ibudev->xrcd_tree_mutex); 633 uobj_finalize_uobj_create(&obj->uobject, attrs); 634 635 resp.xrcd_handle = obj->uobject.id; 636 return uverbs_response(attrs, &resp, sizeof(resp)); 637 638 err_dealloc_xrcd: 639 ib_dealloc_xrcd_user(xrcd, uverbs_get_cleared_udata(attrs)); 640 641 err: 642 uobj_alloc_abort(&obj->uobject, attrs); 643 644 err_tree_mutex_unlock: 645 if (f.file) 646 fdput(f); 647 648 mutex_unlock(&ibudev->xrcd_tree_mutex); 649 650 return ret; 651 } 652 653 static int ib_uverbs_close_xrcd(struct uverbs_attr_bundle *attrs) 654 { 655 struct ib_uverbs_close_xrcd cmd; 656 int ret; 657 658 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 659 if (ret) 660 return ret; 661 662 return uobj_perform_destroy(UVERBS_OBJECT_XRCD, cmd.xrcd_handle, attrs); 663 } 664 665 int ib_uverbs_dealloc_xrcd(struct ib_uobject *uobject, struct ib_xrcd *xrcd, 666 enum rdma_remove_reason why, 667 struct uverbs_attr_bundle *attrs) 668 { 669 struct inode *inode; 670 int ret; 671 struct ib_uverbs_device *dev = attrs->ufile->device; 672 673 inode = xrcd->inode; 674 if (inode && !atomic_dec_and_test(&xrcd->usecnt)) 675 return 0; 676 677 ret = ib_dealloc_xrcd_user(xrcd, &attrs->driver_udata); 678 679 if (ib_is_destroy_retryable(ret, why, uobject)) { 680 atomic_inc(&xrcd->usecnt); 681 return ret; 682 } 683 684 if (inode) 685 xrcd_table_delete(dev, inode); 686 687 return ret; 688 } 689 690 static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs) 691 { 692 struct ib_uverbs_reg_mr_resp resp = {}; 693 struct ib_uverbs_reg_mr cmd; 694 struct ib_uobject *uobj; 695 struct ib_pd *pd; 696 struct ib_mr *mr; 697 int ret; 698 struct ib_device *ib_dev; 699 700 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 701 if (ret) 702 return ret; 703 704 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) 705 return -EINVAL; 706 707 ret = ib_check_mr_access(cmd.access_flags); 708 if (ret) 709 return ret; 710 711 uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev); 712 if (IS_ERR(uobj)) 713 return PTR_ERR(uobj); 714 715 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 716 if (!pd) { 717 ret = -EINVAL; 718 goto err_free; 719 } 720 721 if (cmd.access_flags & IB_ACCESS_ON_DEMAND) { 722 if (!(pd->device->attrs.device_cap_flags & 723 IB_DEVICE_ON_DEMAND_PAGING)) { 724 pr_debug("ODP support not available\n"); 725 ret = -EINVAL; 726 goto err_put; 727 } 728 } 729 730 mr = pd->device->ops.reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, 731 cmd.access_flags, 732 &attrs->driver_udata); 733 if (IS_ERR(mr)) { 734 ret = PTR_ERR(mr); 735 goto err_put; 736 } 737 738 mr->device = pd->device; 739 mr->pd = pd; 740 mr->type = IB_MR_TYPE_USER; 741 mr->dm = NULL; 742 mr->sig_attrs = NULL; 743 mr->uobject = uobj; 744 atomic_inc(&pd->usecnt); 745 mr->res.type = RDMA_RESTRACK_MR; 746 mr->iova = cmd.hca_va; 747 rdma_restrack_uadd(&mr->res); 748 749 uobj->object = mr; 750 uobj_put_obj_read(pd); 751 uobj_finalize_uobj_create(uobj, attrs); 752 753 resp.lkey = mr->lkey; 754 resp.rkey = mr->rkey; 755 resp.mr_handle = uobj->id; 756 return uverbs_response(attrs, &resp, sizeof(resp)); 757 758 err_put: 759 uobj_put_obj_read(pd); 760 err_free: 761 uobj_alloc_abort(uobj, attrs); 762 return ret; 763 } 764 765 static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs) 766 { 767 struct ib_uverbs_rereg_mr cmd; 768 struct ib_uverbs_rereg_mr_resp resp; 769 struct ib_pd *pd = NULL; 770 struct ib_mr *mr; 771 struct ib_pd *old_pd; 772 int ret; 773 struct ib_uobject *uobj; 774 775 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 776 if (ret) 777 return ret; 778 779 if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags) 780 return -EINVAL; 781 782 if ((cmd.flags & IB_MR_REREG_TRANS) && 783 (!cmd.start || !cmd.hca_va || 0 >= cmd.length || 784 (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))) 785 return -EINVAL; 786 787 uobj = uobj_get_write(UVERBS_OBJECT_MR, cmd.mr_handle, attrs); 788 if (IS_ERR(uobj)) 789 return PTR_ERR(uobj); 790 791 mr = uobj->object; 792 793 if (mr->dm) { 794 ret = -EINVAL; 795 goto put_uobjs; 796 } 797 798 if (cmd.flags & IB_MR_REREG_ACCESS) { 799 ret = ib_check_mr_access(cmd.access_flags); 800 if (ret) 801 goto put_uobjs; 802 } 803 804 if (cmd.flags & IB_MR_REREG_PD) { 805 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, 806 attrs); 807 if (!pd) { 808 ret = -EINVAL; 809 goto put_uobjs; 810 } 811 } 812 813 old_pd = mr->pd; 814 ret = mr->device->ops.rereg_user_mr(mr, cmd.flags, cmd.start, 815 cmd.length, cmd.hca_va, 816 cmd.access_flags, pd, 817 &attrs->driver_udata); 818 if (ret) 819 goto put_uobj_pd; 820 821 if (cmd.flags & IB_MR_REREG_PD) { 822 atomic_inc(&pd->usecnt); 823 mr->pd = pd; 824 atomic_dec(&old_pd->usecnt); 825 } 826 827 if (cmd.flags & IB_MR_REREG_TRANS) 828 mr->iova = cmd.hca_va; 829 830 memset(&resp, 0, sizeof(resp)); 831 resp.lkey = mr->lkey; 832 resp.rkey = mr->rkey; 833 834 ret = uverbs_response(attrs, &resp, sizeof(resp)); 835 836 put_uobj_pd: 837 if (cmd.flags & IB_MR_REREG_PD) 838 uobj_put_obj_read(pd); 839 840 put_uobjs: 841 uobj_put_write(uobj); 842 843 return ret; 844 } 845 846 static int ib_uverbs_dereg_mr(struct uverbs_attr_bundle *attrs) 847 { 848 struct ib_uverbs_dereg_mr cmd; 849 int ret; 850 851 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 852 if (ret) 853 return ret; 854 855 return uobj_perform_destroy(UVERBS_OBJECT_MR, cmd.mr_handle, attrs); 856 } 857 858 static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs) 859 { 860 struct ib_uverbs_alloc_mw cmd; 861 struct ib_uverbs_alloc_mw_resp resp; 862 struct ib_uobject *uobj; 863 struct ib_pd *pd; 864 struct ib_mw *mw; 865 int ret; 866 struct ib_device *ib_dev; 867 868 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 869 if (ret) 870 return ret; 871 872 uobj = uobj_alloc(UVERBS_OBJECT_MW, attrs, &ib_dev); 873 if (IS_ERR(uobj)) 874 return PTR_ERR(uobj); 875 876 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 877 if (!pd) { 878 ret = -EINVAL; 879 goto err_free; 880 } 881 882 if (cmd.mw_type != IB_MW_TYPE_1 && cmd.mw_type != IB_MW_TYPE_2) { 883 ret = -EINVAL; 884 goto err_put; 885 } 886 887 mw = pd->device->ops.alloc_mw(pd, cmd.mw_type, &attrs->driver_udata); 888 if (IS_ERR(mw)) { 889 ret = PTR_ERR(mw); 890 goto err_put; 891 } 892 893 mw->device = pd->device; 894 mw->pd = pd; 895 mw->uobject = uobj; 896 atomic_inc(&pd->usecnt); 897 898 uobj->object = mw; 899 uobj_put_obj_read(pd); 900 uobj_finalize_uobj_create(uobj, attrs); 901 902 resp.rkey = mw->rkey; 903 resp.mw_handle = uobj->id; 904 return uverbs_response(attrs, &resp, sizeof(resp)); 905 906 err_put: 907 uobj_put_obj_read(pd); 908 err_free: 909 uobj_alloc_abort(uobj, attrs); 910 return ret; 911 } 912 913 static int ib_uverbs_dealloc_mw(struct uverbs_attr_bundle *attrs) 914 { 915 struct ib_uverbs_dealloc_mw cmd; 916 int ret; 917 918 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 919 if (ret) 920 return ret; 921 922 return uobj_perform_destroy(UVERBS_OBJECT_MW, cmd.mw_handle, attrs); 923 } 924 925 static int ib_uverbs_create_comp_channel(struct uverbs_attr_bundle *attrs) 926 { 927 struct ib_uverbs_create_comp_channel cmd; 928 struct ib_uverbs_create_comp_channel_resp resp; 929 struct ib_uobject *uobj; 930 struct ib_uverbs_completion_event_file *ev_file; 931 struct ib_device *ib_dev; 932 int ret; 933 934 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 935 if (ret) 936 return ret; 937 938 uobj = uobj_alloc(UVERBS_OBJECT_COMP_CHANNEL, attrs, &ib_dev); 939 if (IS_ERR(uobj)) 940 return PTR_ERR(uobj); 941 942 ev_file = container_of(uobj, struct ib_uverbs_completion_event_file, 943 uobj); 944 ib_uverbs_init_event_queue(&ev_file->ev_queue); 945 uobj_finalize_uobj_create(uobj, attrs); 946 947 resp.fd = uobj->id; 948 return uverbs_response(attrs, &resp, sizeof(resp)); 949 } 950 951 static int create_cq(struct uverbs_attr_bundle *attrs, 952 struct ib_uverbs_ex_create_cq *cmd) 953 { 954 struct ib_ucq_object *obj; 955 struct ib_uverbs_completion_event_file *ev_file = NULL; 956 struct ib_cq *cq; 957 int ret; 958 struct ib_uverbs_ex_create_cq_resp resp = {}; 959 struct ib_cq_init_attr attr = {}; 960 struct ib_device *ib_dev; 961 962 if (cmd->comp_vector >= attrs->ufile->device->num_comp_vectors) 963 return -EINVAL; 964 965 obj = (struct ib_ucq_object *)uobj_alloc(UVERBS_OBJECT_CQ, attrs, 966 &ib_dev); 967 if (IS_ERR(obj)) 968 return PTR_ERR(obj); 969 970 if (cmd->comp_channel >= 0) { 971 ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel, attrs); 972 if (IS_ERR(ev_file)) { 973 ret = PTR_ERR(ev_file); 974 goto err; 975 } 976 } 977 978 obj->uevent.uobject.user_handle = cmd->user_handle; 979 INIT_LIST_HEAD(&obj->comp_list); 980 INIT_LIST_HEAD(&obj->uevent.event_list); 981 982 attr.cqe = cmd->cqe; 983 attr.comp_vector = cmd->comp_vector; 984 attr.flags = cmd->flags; 985 986 cq = rdma_zalloc_drv_obj(ib_dev, ib_cq); 987 if (!cq) { 988 ret = -ENOMEM; 989 goto err_file; 990 } 991 cq->device = ib_dev; 992 cq->uobject = obj; 993 cq->comp_handler = ib_uverbs_comp_handler; 994 cq->event_handler = ib_uverbs_cq_event_handler; 995 cq->cq_context = ev_file ? &ev_file->ev_queue : NULL; 996 atomic_set(&cq->usecnt, 0); 997 cq->res.type = RDMA_RESTRACK_CQ; 998 999 ret = ib_dev->ops.create_cq(cq, &attr, &attrs->driver_udata); 1000 if (ret) 1001 goto err_free; 1002 rdma_restrack_uadd(&cq->res); 1003 1004 obj->uevent.uobject.object = cq; 1005 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file); 1006 if (obj->uevent.event_file) 1007 uverbs_uobject_get(&obj->uevent.event_file->uobj); 1008 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs); 1009 1010 resp.base.cq_handle = obj->uevent.uobject.id; 1011 resp.base.cqe = cq->cqe; 1012 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 1013 return uverbs_response(attrs, &resp, sizeof(resp)); 1014 1015 err_free: 1016 kfree(cq); 1017 err_file: 1018 if (ev_file) 1019 ib_uverbs_release_ucq(ev_file, obj); 1020 err: 1021 uobj_alloc_abort(&obj->uevent.uobject, attrs); 1022 return ret; 1023 } 1024 1025 static int ib_uverbs_create_cq(struct uverbs_attr_bundle *attrs) 1026 { 1027 struct ib_uverbs_create_cq cmd; 1028 struct ib_uverbs_ex_create_cq cmd_ex; 1029 int ret; 1030 1031 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1032 if (ret) 1033 return ret; 1034 1035 memset(&cmd_ex, 0, sizeof(cmd_ex)); 1036 cmd_ex.user_handle = cmd.user_handle; 1037 cmd_ex.cqe = cmd.cqe; 1038 cmd_ex.comp_vector = cmd.comp_vector; 1039 cmd_ex.comp_channel = cmd.comp_channel; 1040 1041 return create_cq(attrs, &cmd_ex); 1042 } 1043 1044 static int ib_uverbs_ex_create_cq(struct uverbs_attr_bundle *attrs) 1045 { 1046 struct ib_uverbs_ex_create_cq cmd; 1047 int ret; 1048 1049 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1050 if (ret) 1051 return ret; 1052 1053 if (cmd.comp_mask) 1054 return -EINVAL; 1055 1056 if (cmd.reserved) 1057 return -EINVAL; 1058 1059 return create_cq(attrs, &cmd); 1060 } 1061 1062 static int ib_uverbs_resize_cq(struct uverbs_attr_bundle *attrs) 1063 { 1064 struct ib_uverbs_resize_cq cmd; 1065 struct ib_uverbs_resize_cq_resp resp = {}; 1066 struct ib_cq *cq; 1067 int ret; 1068 1069 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1070 if (ret) 1071 return ret; 1072 1073 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1074 if (!cq) 1075 return -EINVAL; 1076 1077 ret = cq->device->ops.resize_cq(cq, cmd.cqe, &attrs->driver_udata); 1078 if (ret) 1079 goto out; 1080 1081 resp.cqe = cq->cqe; 1082 1083 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1084 out: 1085 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, 1086 UVERBS_LOOKUP_READ); 1087 1088 return ret; 1089 } 1090 1091 static int copy_wc_to_user(struct ib_device *ib_dev, void __user *dest, 1092 struct ib_wc *wc) 1093 { 1094 struct ib_uverbs_wc tmp; 1095 1096 tmp.wr_id = wc->wr_id; 1097 tmp.status = wc->status; 1098 tmp.opcode = wc->opcode; 1099 tmp.vendor_err = wc->vendor_err; 1100 tmp.byte_len = wc->byte_len; 1101 tmp.ex.imm_data = wc->ex.imm_data; 1102 tmp.qp_num = wc->qp->qp_num; 1103 tmp.src_qp = wc->src_qp; 1104 tmp.wc_flags = wc->wc_flags; 1105 tmp.pkey_index = wc->pkey_index; 1106 if (rdma_cap_opa_ah(ib_dev, wc->port_num)) 1107 tmp.slid = OPA_TO_IB_UCAST_LID(wc->slid); 1108 else 1109 tmp.slid = ib_lid_cpu16(wc->slid); 1110 tmp.sl = wc->sl; 1111 tmp.dlid_path_bits = wc->dlid_path_bits; 1112 tmp.port_num = wc->port_num; 1113 tmp.reserved = 0; 1114 1115 if (copy_to_user(dest, &tmp, sizeof tmp)) 1116 return -EFAULT; 1117 1118 return 0; 1119 } 1120 1121 static int ib_uverbs_poll_cq(struct uverbs_attr_bundle *attrs) 1122 { 1123 struct ib_uverbs_poll_cq cmd; 1124 struct ib_uverbs_poll_cq_resp resp; 1125 u8 __user *header_ptr; 1126 u8 __user *data_ptr; 1127 struct ib_cq *cq; 1128 struct ib_wc wc; 1129 int ret; 1130 1131 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1132 if (ret) 1133 return ret; 1134 1135 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1136 if (!cq) 1137 return -EINVAL; 1138 1139 /* we copy a struct ib_uverbs_poll_cq_resp to user space */ 1140 header_ptr = attrs->ucore.outbuf; 1141 data_ptr = header_ptr + sizeof resp; 1142 1143 memset(&resp, 0, sizeof resp); 1144 while (resp.count < cmd.ne) { 1145 ret = ib_poll_cq(cq, 1, &wc); 1146 if (ret < 0) 1147 goto out_put; 1148 if (!ret) 1149 break; 1150 1151 ret = copy_wc_to_user(cq->device, data_ptr, &wc); 1152 if (ret) 1153 goto out_put; 1154 1155 data_ptr += sizeof(struct ib_uverbs_wc); 1156 ++resp.count; 1157 } 1158 1159 if (copy_to_user(header_ptr, &resp, sizeof resp)) { 1160 ret = -EFAULT; 1161 goto out_put; 1162 } 1163 ret = 0; 1164 1165 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT)) 1166 ret = uverbs_output_written(attrs, UVERBS_ATTR_CORE_OUT); 1167 1168 out_put: 1169 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, 1170 UVERBS_LOOKUP_READ); 1171 return ret; 1172 } 1173 1174 static int ib_uverbs_req_notify_cq(struct uverbs_attr_bundle *attrs) 1175 { 1176 struct ib_uverbs_req_notify_cq cmd; 1177 struct ib_cq *cq; 1178 int ret; 1179 1180 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1181 if (ret) 1182 return ret; 1183 1184 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1185 if (!cq) 1186 return -EINVAL; 1187 1188 ib_req_notify_cq(cq, cmd.solicited_only ? 1189 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); 1190 1191 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, 1192 UVERBS_LOOKUP_READ); 1193 return 0; 1194 } 1195 1196 static int ib_uverbs_destroy_cq(struct uverbs_attr_bundle *attrs) 1197 { 1198 struct ib_uverbs_destroy_cq cmd; 1199 struct ib_uverbs_destroy_cq_resp resp; 1200 struct ib_uobject *uobj; 1201 struct ib_ucq_object *obj; 1202 int ret; 1203 1204 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1205 if (ret) 1206 return ret; 1207 1208 uobj = uobj_get_destroy(UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1209 if (IS_ERR(uobj)) 1210 return PTR_ERR(uobj); 1211 1212 obj = container_of(uobj, struct ib_ucq_object, uevent.uobject); 1213 memset(&resp, 0, sizeof(resp)); 1214 resp.comp_events_reported = obj->comp_events_reported; 1215 resp.async_events_reported = obj->uevent.events_reported; 1216 1217 uobj_put_destroy(uobj); 1218 1219 return uverbs_response(attrs, &resp, sizeof(resp)); 1220 } 1221 1222 static int create_qp(struct uverbs_attr_bundle *attrs, 1223 struct ib_uverbs_ex_create_qp *cmd) 1224 { 1225 struct ib_uqp_object *obj; 1226 struct ib_device *device; 1227 struct ib_pd *pd = NULL; 1228 struct ib_xrcd *xrcd = NULL; 1229 struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT); 1230 struct ib_cq *scq = NULL, *rcq = NULL; 1231 struct ib_srq *srq = NULL; 1232 struct ib_qp *qp; 1233 struct ib_qp_init_attr attr = {}; 1234 struct ib_uverbs_ex_create_qp_resp resp = {}; 1235 int ret; 1236 struct ib_rwq_ind_table *ind_tbl = NULL; 1237 bool has_sq = true; 1238 struct ib_device *ib_dev; 1239 1240 if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW)) 1241 return -EPERM; 1242 1243 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs, 1244 &ib_dev); 1245 if (IS_ERR(obj)) 1246 return PTR_ERR(obj); 1247 obj->uxrcd = NULL; 1248 obj->uevent.uobject.user_handle = cmd->user_handle; 1249 mutex_init(&obj->mcast_lock); 1250 1251 if (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE) { 1252 ind_tbl = uobj_get_obj_read(rwq_ind_table, 1253 UVERBS_OBJECT_RWQ_IND_TBL, 1254 cmd->rwq_ind_tbl_handle, attrs); 1255 if (!ind_tbl) { 1256 ret = -EINVAL; 1257 goto err_put; 1258 } 1259 1260 attr.rwq_ind_tbl = ind_tbl; 1261 } 1262 1263 if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) { 1264 ret = -EINVAL; 1265 goto err_put; 1266 } 1267 1268 if (ind_tbl && !cmd->max_send_wr) 1269 has_sq = false; 1270 1271 if (cmd->qp_type == IB_QPT_XRC_TGT) { 1272 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->pd_handle, 1273 attrs); 1274 1275 if (IS_ERR(xrcd_uobj)) { 1276 ret = -EINVAL; 1277 goto err_put; 1278 } 1279 1280 xrcd = (struct ib_xrcd *)xrcd_uobj->object; 1281 if (!xrcd) { 1282 ret = -EINVAL; 1283 goto err_put; 1284 } 1285 device = xrcd->device; 1286 } else { 1287 if (cmd->qp_type == IB_QPT_XRC_INI) { 1288 cmd->max_recv_wr = 0; 1289 cmd->max_recv_sge = 0; 1290 } else { 1291 if (cmd->is_srq) { 1292 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, 1293 cmd->srq_handle, attrs); 1294 if (!srq || srq->srq_type == IB_SRQT_XRC) { 1295 ret = -EINVAL; 1296 goto err_put; 1297 } 1298 } 1299 1300 if (!ind_tbl) { 1301 if (cmd->recv_cq_handle != cmd->send_cq_handle) { 1302 rcq = uobj_get_obj_read( 1303 cq, UVERBS_OBJECT_CQ, 1304 cmd->recv_cq_handle, attrs); 1305 if (!rcq) { 1306 ret = -EINVAL; 1307 goto err_put; 1308 } 1309 } 1310 } 1311 } 1312 1313 if (has_sq) 1314 scq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, 1315 cmd->send_cq_handle, attrs); 1316 if (!ind_tbl) 1317 rcq = rcq ?: scq; 1318 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, 1319 attrs); 1320 if (!pd || (!scq && has_sq)) { 1321 ret = -EINVAL; 1322 goto err_put; 1323 } 1324 1325 device = pd->device; 1326 } 1327 1328 attr.event_handler = ib_uverbs_qp_event_handler; 1329 attr.send_cq = scq; 1330 attr.recv_cq = rcq; 1331 attr.srq = srq; 1332 attr.xrcd = xrcd; 1333 attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR : 1334 IB_SIGNAL_REQ_WR; 1335 attr.qp_type = cmd->qp_type; 1336 attr.create_flags = 0; 1337 1338 attr.cap.max_send_wr = cmd->max_send_wr; 1339 attr.cap.max_recv_wr = cmd->max_recv_wr; 1340 attr.cap.max_send_sge = cmd->max_send_sge; 1341 attr.cap.max_recv_sge = cmd->max_recv_sge; 1342 attr.cap.max_inline_data = cmd->max_inline_data; 1343 1344 INIT_LIST_HEAD(&obj->uevent.event_list); 1345 INIT_LIST_HEAD(&obj->mcast_list); 1346 1347 attr.create_flags = cmd->create_flags; 1348 if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK | 1349 IB_QP_CREATE_CROSS_CHANNEL | 1350 IB_QP_CREATE_MANAGED_SEND | 1351 IB_QP_CREATE_MANAGED_RECV | 1352 IB_QP_CREATE_SCATTER_FCS | 1353 IB_QP_CREATE_CVLAN_STRIPPING | 1354 IB_QP_CREATE_SOURCE_QPN | 1355 IB_QP_CREATE_PCI_WRITE_END_PADDING)) { 1356 ret = -EINVAL; 1357 goto err_put; 1358 } 1359 1360 if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) { 1361 if (!capable(CAP_NET_RAW)) { 1362 ret = -EPERM; 1363 goto err_put; 1364 } 1365 1366 attr.source_qpn = cmd->source_qpn; 1367 } 1368 1369 if (cmd->qp_type == IB_QPT_XRC_TGT) 1370 qp = ib_create_qp(pd, &attr); 1371 else 1372 qp = _ib_create_qp(device, pd, &attr, &attrs->driver_udata, 1373 obj); 1374 1375 if (IS_ERR(qp)) { 1376 ret = PTR_ERR(qp); 1377 goto err_put; 1378 } 1379 1380 if (cmd->qp_type != IB_QPT_XRC_TGT) { 1381 ret = ib_create_qp_security(qp, device); 1382 if (ret) 1383 goto err_cb; 1384 1385 atomic_inc(&pd->usecnt); 1386 if (attr.send_cq) 1387 atomic_inc(&attr.send_cq->usecnt); 1388 if (attr.recv_cq) 1389 atomic_inc(&attr.recv_cq->usecnt); 1390 if (attr.srq) 1391 atomic_inc(&attr.srq->usecnt); 1392 if (ind_tbl) 1393 atomic_inc(&ind_tbl->usecnt); 1394 } else { 1395 /* It is done in _ib_create_qp for other QP types */ 1396 qp->uobject = obj; 1397 } 1398 1399 obj->uevent.uobject.object = qp; 1400 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file); 1401 if (obj->uevent.event_file) 1402 uverbs_uobject_get(&obj->uevent.event_file->uobj); 1403 1404 if (xrcd) { 1405 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, 1406 uobject); 1407 atomic_inc(&obj->uxrcd->refcnt); 1408 uobj_put_read(xrcd_uobj); 1409 } 1410 1411 if (pd) 1412 uobj_put_obj_read(pd); 1413 if (scq) 1414 rdma_lookup_put_uobject(&scq->uobject->uevent.uobject, 1415 UVERBS_LOOKUP_READ); 1416 if (rcq && rcq != scq) 1417 rdma_lookup_put_uobject(&rcq->uobject->uevent.uobject, 1418 UVERBS_LOOKUP_READ); 1419 if (srq) 1420 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, 1421 UVERBS_LOOKUP_READ); 1422 if (ind_tbl) 1423 uobj_put_obj_read(ind_tbl); 1424 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs); 1425 1426 resp.base.qpn = qp->qp_num; 1427 resp.base.qp_handle = obj->uevent.uobject.id; 1428 resp.base.max_recv_sge = attr.cap.max_recv_sge; 1429 resp.base.max_send_sge = attr.cap.max_send_sge; 1430 resp.base.max_recv_wr = attr.cap.max_recv_wr; 1431 resp.base.max_send_wr = attr.cap.max_send_wr; 1432 resp.base.max_inline_data = attr.cap.max_inline_data; 1433 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 1434 return uverbs_response(attrs, &resp, sizeof(resp)); 1435 1436 err_cb: 1437 ib_destroy_qp_user(qp, uverbs_get_cleared_udata(attrs)); 1438 1439 err_put: 1440 if (!IS_ERR(xrcd_uobj)) 1441 uobj_put_read(xrcd_uobj); 1442 if (pd) 1443 uobj_put_obj_read(pd); 1444 if (scq) 1445 rdma_lookup_put_uobject(&scq->uobject->uevent.uobject, 1446 UVERBS_LOOKUP_READ); 1447 if (rcq && rcq != scq) 1448 rdma_lookup_put_uobject(&rcq->uobject->uevent.uobject, 1449 UVERBS_LOOKUP_READ); 1450 if (srq) 1451 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, 1452 UVERBS_LOOKUP_READ); 1453 if (ind_tbl) 1454 uobj_put_obj_read(ind_tbl); 1455 1456 uobj_alloc_abort(&obj->uevent.uobject, attrs); 1457 return ret; 1458 } 1459 1460 static int ib_uverbs_create_qp(struct uverbs_attr_bundle *attrs) 1461 { 1462 struct ib_uverbs_create_qp cmd; 1463 struct ib_uverbs_ex_create_qp cmd_ex; 1464 int ret; 1465 1466 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1467 if (ret) 1468 return ret; 1469 1470 memset(&cmd_ex, 0, sizeof(cmd_ex)); 1471 cmd_ex.user_handle = cmd.user_handle; 1472 cmd_ex.pd_handle = cmd.pd_handle; 1473 cmd_ex.send_cq_handle = cmd.send_cq_handle; 1474 cmd_ex.recv_cq_handle = cmd.recv_cq_handle; 1475 cmd_ex.srq_handle = cmd.srq_handle; 1476 cmd_ex.max_send_wr = cmd.max_send_wr; 1477 cmd_ex.max_recv_wr = cmd.max_recv_wr; 1478 cmd_ex.max_send_sge = cmd.max_send_sge; 1479 cmd_ex.max_recv_sge = cmd.max_recv_sge; 1480 cmd_ex.max_inline_data = cmd.max_inline_data; 1481 cmd_ex.sq_sig_all = cmd.sq_sig_all; 1482 cmd_ex.qp_type = cmd.qp_type; 1483 cmd_ex.is_srq = cmd.is_srq; 1484 1485 return create_qp(attrs, &cmd_ex); 1486 } 1487 1488 static int ib_uverbs_ex_create_qp(struct uverbs_attr_bundle *attrs) 1489 { 1490 struct ib_uverbs_ex_create_qp cmd; 1491 int ret; 1492 1493 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1494 if (ret) 1495 return ret; 1496 1497 if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK) 1498 return -EINVAL; 1499 1500 if (cmd.reserved) 1501 return -EINVAL; 1502 1503 return create_qp(attrs, &cmd); 1504 } 1505 1506 static int ib_uverbs_open_qp(struct uverbs_attr_bundle *attrs) 1507 { 1508 struct ib_uverbs_create_qp_resp resp = {}; 1509 struct ib_uverbs_open_qp cmd; 1510 struct ib_uqp_object *obj; 1511 struct ib_xrcd *xrcd; 1512 struct ib_qp *qp; 1513 struct ib_qp_open_attr attr = {}; 1514 int ret; 1515 struct ib_uobject *xrcd_uobj; 1516 struct ib_device *ib_dev; 1517 1518 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1519 if (ret) 1520 return ret; 1521 1522 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs, 1523 &ib_dev); 1524 if (IS_ERR(obj)) 1525 return PTR_ERR(obj); 1526 1527 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd.pd_handle, attrs); 1528 if (IS_ERR(xrcd_uobj)) { 1529 ret = -EINVAL; 1530 goto err_put; 1531 } 1532 1533 xrcd = (struct ib_xrcd *)xrcd_uobj->object; 1534 if (!xrcd) { 1535 ret = -EINVAL; 1536 goto err_xrcd; 1537 } 1538 1539 attr.event_handler = ib_uverbs_qp_event_handler; 1540 attr.qp_num = cmd.qpn; 1541 attr.qp_type = cmd.qp_type; 1542 1543 INIT_LIST_HEAD(&obj->uevent.event_list); 1544 INIT_LIST_HEAD(&obj->mcast_list); 1545 1546 qp = ib_open_qp(xrcd, &attr); 1547 if (IS_ERR(qp)) { 1548 ret = PTR_ERR(qp); 1549 goto err_xrcd; 1550 } 1551 1552 obj->uevent.uobject.object = qp; 1553 obj->uevent.uobject.user_handle = cmd.user_handle; 1554 1555 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); 1556 atomic_inc(&obj->uxrcd->refcnt); 1557 qp->uobject = obj; 1558 uobj_put_read(xrcd_uobj); 1559 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs); 1560 1561 resp.qpn = qp->qp_num; 1562 resp.qp_handle = obj->uevent.uobject.id; 1563 return uverbs_response(attrs, &resp, sizeof(resp)); 1564 1565 err_xrcd: 1566 uobj_put_read(xrcd_uobj); 1567 err_put: 1568 uobj_alloc_abort(&obj->uevent.uobject, attrs); 1569 return ret; 1570 } 1571 1572 static void copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest *uverb_attr, 1573 struct rdma_ah_attr *rdma_attr) 1574 { 1575 const struct ib_global_route *grh; 1576 1577 uverb_attr->dlid = rdma_ah_get_dlid(rdma_attr); 1578 uverb_attr->sl = rdma_ah_get_sl(rdma_attr); 1579 uverb_attr->src_path_bits = rdma_ah_get_path_bits(rdma_attr); 1580 uverb_attr->static_rate = rdma_ah_get_static_rate(rdma_attr); 1581 uverb_attr->is_global = !!(rdma_ah_get_ah_flags(rdma_attr) & 1582 IB_AH_GRH); 1583 if (uverb_attr->is_global) { 1584 grh = rdma_ah_read_grh(rdma_attr); 1585 memcpy(uverb_attr->dgid, grh->dgid.raw, 16); 1586 uverb_attr->flow_label = grh->flow_label; 1587 uverb_attr->sgid_index = grh->sgid_index; 1588 uverb_attr->hop_limit = grh->hop_limit; 1589 uverb_attr->traffic_class = grh->traffic_class; 1590 } 1591 uverb_attr->port_num = rdma_ah_get_port_num(rdma_attr); 1592 } 1593 1594 static int ib_uverbs_query_qp(struct uverbs_attr_bundle *attrs) 1595 { 1596 struct ib_uverbs_query_qp cmd; 1597 struct ib_uverbs_query_qp_resp resp; 1598 struct ib_qp *qp; 1599 struct ib_qp_attr *attr; 1600 struct ib_qp_init_attr *init_attr; 1601 int ret; 1602 1603 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1604 if (ret) 1605 return ret; 1606 1607 attr = kmalloc(sizeof *attr, GFP_KERNEL); 1608 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); 1609 if (!attr || !init_attr) { 1610 ret = -ENOMEM; 1611 goto out; 1612 } 1613 1614 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 1615 if (!qp) { 1616 ret = -EINVAL; 1617 goto out; 1618 } 1619 1620 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); 1621 1622 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, 1623 UVERBS_LOOKUP_READ); 1624 1625 if (ret) 1626 goto out; 1627 1628 memset(&resp, 0, sizeof resp); 1629 1630 resp.qp_state = attr->qp_state; 1631 resp.cur_qp_state = attr->cur_qp_state; 1632 resp.path_mtu = attr->path_mtu; 1633 resp.path_mig_state = attr->path_mig_state; 1634 resp.qkey = attr->qkey; 1635 resp.rq_psn = attr->rq_psn; 1636 resp.sq_psn = attr->sq_psn; 1637 resp.dest_qp_num = attr->dest_qp_num; 1638 resp.qp_access_flags = attr->qp_access_flags; 1639 resp.pkey_index = attr->pkey_index; 1640 resp.alt_pkey_index = attr->alt_pkey_index; 1641 resp.sq_draining = attr->sq_draining; 1642 resp.max_rd_atomic = attr->max_rd_atomic; 1643 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; 1644 resp.min_rnr_timer = attr->min_rnr_timer; 1645 resp.port_num = attr->port_num; 1646 resp.timeout = attr->timeout; 1647 resp.retry_cnt = attr->retry_cnt; 1648 resp.rnr_retry = attr->rnr_retry; 1649 resp.alt_port_num = attr->alt_port_num; 1650 resp.alt_timeout = attr->alt_timeout; 1651 1652 copy_ah_attr_to_uverbs(&resp.dest, &attr->ah_attr); 1653 copy_ah_attr_to_uverbs(&resp.alt_dest, &attr->alt_ah_attr); 1654 1655 resp.max_send_wr = init_attr->cap.max_send_wr; 1656 resp.max_recv_wr = init_attr->cap.max_recv_wr; 1657 resp.max_send_sge = init_attr->cap.max_send_sge; 1658 resp.max_recv_sge = init_attr->cap.max_recv_sge; 1659 resp.max_inline_data = init_attr->cap.max_inline_data; 1660 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; 1661 1662 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1663 1664 out: 1665 kfree(attr); 1666 kfree(init_attr); 1667 1668 return ret; 1669 } 1670 1671 /* Remove ignored fields set in the attribute mask */ 1672 static int modify_qp_mask(enum ib_qp_type qp_type, int mask) 1673 { 1674 switch (qp_type) { 1675 case IB_QPT_XRC_INI: 1676 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER); 1677 case IB_QPT_XRC_TGT: 1678 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT | 1679 IB_QP_RNR_RETRY); 1680 default: 1681 return mask; 1682 } 1683 } 1684 1685 static void copy_ah_attr_from_uverbs(struct ib_device *dev, 1686 struct rdma_ah_attr *rdma_attr, 1687 struct ib_uverbs_qp_dest *uverb_attr) 1688 { 1689 rdma_attr->type = rdma_ah_find_type(dev, uverb_attr->port_num); 1690 if (uverb_attr->is_global) { 1691 rdma_ah_set_grh(rdma_attr, NULL, 1692 uverb_attr->flow_label, 1693 uverb_attr->sgid_index, 1694 uverb_attr->hop_limit, 1695 uverb_attr->traffic_class); 1696 rdma_ah_set_dgid_raw(rdma_attr, uverb_attr->dgid); 1697 } else { 1698 rdma_ah_set_ah_flags(rdma_attr, 0); 1699 } 1700 rdma_ah_set_dlid(rdma_attr, uverb_attr->dlid); 1701 rdma_ah_set_sl(rdma_attr, uverb_attr->sl); 1702 rdma_ah_set_path_bits(rdma_attr, uverb_attr->src_path_bits); 1703 rdma_ah_set_static_rate(rdma_attr, uverb_attr->static_rate); 1704 rdma_ah_set_port_num(rdma_attr, uverb_attr->port_num); 1705 rdma_ah_set_make_grd(rdma_attr, false); 1706 } 1707 1708 static int modify_qp(struct uverbs_attr_bundle *attrs, 1709 struct ib_uverbs_ex_modify_qp *cmd) 1710 { 1711 struct ib_qp_attr *attr; 1712 struct ib_qp *qp; 1713 int ret; 1714 1715 attr = kzalloc(sizeof(*attr), GFP_KERNEL); 1716 if (!attr) 1717 return -ENOMEM; 1718 1719 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd->base.qp_handle, 1720 attrs); 1721 if (!qp) { 1722 ret = -EINVAL; 1723 goto out; 1724 } 1725 1726 if ((cmd->base.attr_mask & IB_QP_PORT) && 1727 !rdma_is_port_valid(qp->device, cmd->base.port_num)) { 1728 ret = -EINVAL; 1729 goto release_qp; 1730 } 1731 1732 if ((cmd->base.attr_mask & IB_QP_AV)) { 1733 if (!rdma_is_port_valid(qp->device, cmd->base.dest.port_num)) { 1734 ret = -EINVAL; 1735 goto release_qp; 1736 } 1737 1738 if (cmd->base.attr_mask & IB_QP_STATE && 1739 cmd->base.qp_state == IB_QPS_RTR) { 1740 /* We are in INIT->RTR TRANSITION (if we are not, 1741 * this transition will be rejected in subsequent checks). 1742 * In the INIT->RTR transition, we cannot have IB_QP_PORT set, 1743 * but the IB_QP_STATE flag is required. 1744 * 1745 * Since kernel 3.14 (commit dbf727de7440), the uverbs driver, 1746 * when IB_QP_AV is set, has required inclusion of a valid 1747 * port number in the primary AV. (AVs are created and handled 1748 * differently for infiniband and ethernet (RoCE) ports). 1749 * 1750 * Check the port number included in the primary AV against 1751 * the port number in the qp struct, which was set (and saved) 1752 * in the RST->INIT transition. 1753 */ 1754 if (cmd->base.dest.port_num != qp->real_qp->port) { 1755 ret = -EINVAL; 1756 goto release_qp; 1757 } 1758 } else { 1759 /* We are in SQD->SQD. (If we are not, this transition will 1760 * be rejected later in the verbs layer checks). 1761 * Check for both IB_QP_PORT and IB_QP_AV, these can be set 1762 * together in the SQD->SQD transition. 1763 * 1764 * If only IP_QP_AV was set, add in IB_QP_PORT as well (the 1765 * verbs layer driver does not track primary port changes 1766 * resulting from path migration. Thus, in SQD, if the primary 1767 * AV is modified, the primary port should also be modified). 1768 * 1769 * Note that in this transition, the IB_QP_STATE flag 1770 * is not allowed. 1771 */ 1772 if (((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT)) 1773 == (IB_QP_AV | IB_QP_PORT)) && 1774 cmd->base.port_num != cmd->base.dest.port_num) { 1775 ret = -EINVAL; 1776 goto release_qp; 1777 } 1778 if ((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT)) 1779 == IB_QP_AV) { 1780 cmd->base.attr_mask |= IB_QP_PORT; 1781 cmd->base.port_num = cmd->base.dest.port_num; 1782 } 1783 } 1784 } 1785 1786 if ((cmd->base.attr_mask & IB_QP_ALT_PATH) && 1787 (!rdma_is_port_valid(qp->device, cmd->base.alt_port_num) || 1788 !rdma_is_port_valid(qp->device, cmd->base.alt_dest.port_num) || 1789 cmd->base.alt_port_num != cmd->base.alt_dest.port_num)) { 1790 ret = -EINVAL; 1791 goto release_qp; 1792 } 1793 1794 if ((cmd->base.attr_mask & IB_QP_CUR_STATE && 1795 cmd->base.cur_qp_state > IB_QPS_ERR) || 1796 (cmd->base.attr_mask & IB_QP_STATE && 1797 cmd->base.qp_state > IB_QPS_ERR)) { 1798 ret = -EINVAL; 1799 goto release_qp; 1800 } 1801 1802 if (cmd->base.attr_mask & IB_QP_STATE) 1803 attr->qp_state = cmd->base.qp_state; 1804 if (cmd->base.attr_mask & IB_QP_CUR_STATE) 1805 attr->cur_qp_state = cmd->base.cur_qp_state; 1806 if (cmd->base.attr_mask & IB_QP_PATH_MTU) 1807 attr->path_mtu = cmd->base.path_mtu; 1808 if (cmd->base.attr_mask & IB_QP_PATH_MIG_STATE) 1809 attr->path_mig_state = cmd->base.path_mig_state; 1810 if (cmd->base.attr_mask & IB_QP_QKEY) 1811 attr->qkey = cmd->base.qkey; 1812 if (cmd->base.attr_mask & IB_QP_RQ_PSN) 1813 attr->rq_psn = cmd->base.rq_psn; 1814 if (cmd->base.attr_mask & IB_QP_SQ_PSN) 1815 attr->sq_psn = cmd->base.sq_psn; 1816 if (cmd->base.attr_mask & IB_QP_DEST_QPN) 1817 attr->dest_qp_num = cmd->base.dest_qp_num; 1818 if (cmd->base.attr_mask & IB_QP_ACCESS_FLAGS) 1819 attr->qp_access_flags = cmd->base.qp_access_flags; 1820 if (cmd->base.attr_mask & IB_QP_PKEY_INDEX) 1821 attr->pkey_index = cmd->base.pkey_index; 1822 if (cmd->base.attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) 1823 attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify; 1824 if (cmd->base.attr_mask & IB_QP_MAX_QP_RD_ATOMIC) 1825 attr->max_rd_atomic = cmd->base.max_rd_atomic; 1826 if (cmd->base.attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) 1827 attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic; 1828 if (cmd->base.attr_mask & IB_QP_MIN_RNR_TIMER) 1829 attr->min_rnr_timer = cmd->base.min_rnr_timer; 1830 if (cmd->base.attr_mask & IB_QP_PORT) 1831 attr->port_num = cmd->base.port_num; 1832 if (cmd->base.attr_mask & IB_QP_TIMEOUT) 1833 attr->timeout = cmd->base.timeout; 1834 if (cmd->base.attr_mask & IB_QP_RETRY_CNT) 1835 attr->retry_cnt = cmd->base.retry_cnt; 1836 if (cmd->base.attr_mask & IB_QP_RNR_RETRY) 1837 attr->rnr_retry = cmd->base.rnr_retry; 1838 if (cmd->base.attr_mask & IB_QP_ALT_PATH) { 1839 attr->alt_port_num = cmd->base.alt_port_num; 1840 attr->alt_timeout = cmd->base.alt_timeout; 1841 attr->alt_pkey_index = cmd->base.alt_pkey_index; 1842 } 1843 if (cmd->base.attr_mask & IB_QP_RATE_LIMIT) 1844 attr->rate_limit = cmd->rate_limit; 1845 1846 if (cmd->base.attr_mask & IB_QP_AV) 1847 copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr, 1848 &cmd->base.dest); 1849 1850 if (cmd->base.attr_mask & IB_QP_ALT_PATH) 1851 copy_ah_attr_from_uverbs(qp->device, &attr->alt_ah_attr, 1852 &cmd->base.alt_dest); 1853 1854 ret = ib_modify_qp_with_udata(qp, attr, 1855 modify_qp_mask(qp->qp_type, 1856 cmd->base.attr_mask), 1857 &attrs->driver_udata); 1858 1859 release_qp: 1860 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, 1861 UVERBS_LOOKUP_READ); 1862 out: 1863 kfree(attr); 1864 1865 return ret; 1866 } 1867 1868 static int ib_uverbs_modify_qp(struct uverbs_attr_bundle *attrs) 1869 { 1870 struct ib_uverbs_ex_modify_qp cmd; 1871 int ret; 1872 1873 ret = uverbs_request(attrs, &cmd.base, sizeof(cmd.base)); 1874 if (ret) 1875 return ret; 1876 1877 if (cmd.base.attr_mask & 1878 ~((IB_USER_LEGACY_LAST_QP_ATTR_MASK << 1) - 1)) 1879 return -EOPNOTSUPP; 1880 1881 return modify_qp(attrs, &cmd); 1882 } 1883 1884 static int ib_uverbs_ex_modify_qp(struct uverbs_attr_bundle *attrs) 1885 { 1886 struct ib_uverbs_ex_modify_qp cmd; 1887 struct ib_uverbs_ex_modify_qp_resp resp = { 1888 .response_length = uverbs_response_length(attrs, sizeof(resp)) 1889 }; 1890 int ret; 1891 1892 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1893 if (ret) 1894 return ret; 1895 1896 /* 1897 * Last bit is reserved for extending the attr_mask by 1898 * using another field. 1899 */ 1900 BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1ULL << 31)); 1901 1902 if (cmd.base.attr_mask & 1903 ~((IB_USER_LAST_QP_ATTR_MASK << 1) - 1)) 1904 return -EOPNOTSUPP; 1905 1906 ret = modify_qp(attrs, &cmd); 1907 if (ret) 1908 return ret; 1909 1910 return uverbs_response(attrs, &resp, sizeof(resp)); 1911 } 1912 1913 static int ib_uverbs_destroy_qp(struct uverbs_attr_bundle *attrs) 1914 { 1915 struct ib_uverbs_destroy_qp cmd; 1916 struct ib_uverbs_destroy_qp_resp resp; 1917 struct ib_uobject *uobj; 1918 struct ib_uqp_object *obj; 1919 int ret; 1920 1921 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1922 if (ret) 1923 return ret; 1924 1925 uobj = uobj_get_destroy(UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 1926 if (IS_ERR(uobj)) 1927 return PTR_ERR(uobj); 1928 1929 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); 1930 memset(&resp, 0, sizeof(resp)); 1931 resp.events_reported = obj->uevent.events_reported; 1932 1933 uobj_put_destroy(uobj); 1934 1935 return uverbs_response(attrs, &resp, sizeof(resp)); 1936 } 1937 1938 static void *alloc_wr(size_t wr_size, __u32 num_sge) 1939 { 1940 if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof (struct ib_sge))) / 1941 sizeof (struct ib_sge)) 1942 return NULL; 1943 1944 return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) + 1945 num_sge * sizeof (struct ib_sge), GFP_KERNEL); 1946 } 1947 1948 static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs) 1949 { 1950 struct ib_uverbs_post_send cmd; 1951 struct ib_uverbs_post_send_resp resp; 1952 struct ib_uverbs_send_wr *user_wr; 1953 struct ib_send_wr *wr = NULL, *last, *next; 1954 const struct ib_send_wr *bad_wr; 1955 struct ib_qp *qp; 1956 int i, sg_ind; 1957 int is_ud; 1958 int ret, ret2; 1959 size_t next_size; 1960 const struct ib_sge __user *sgls; 1961 const void __user *wqes; 1962 struct uverbs_req_iter iter; 1963 1964 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 1965 if (ret) 1966 return ret; 1967 wqes = uverbs_request_next_ptr(&iter, cmd.wqe_size * cmd.wr_count); 1968 if (IS_ERR(wqes)) 1969 return PTR_ERR(wqes); 1970 sgls = uverbs_request_next_ptr( 1971 &iter, cmd.sge_count * sizeof(struct ib_uverbs_sge)); 1972 if (IS_ERR(sgls)) 1973 return PTR_ERR(sgls); 1974 ret = uverbs_request_finish(&iter); 1975 if (ret) 1976 return ret; 1977 1978 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); 1979 if (!user_wr) 1980 return -ENOMEM; 1981 1982 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 1983 if (!qp) { 1984 ret = -EINVAL; 1985 goto out; 1986 } 1987 1988 is_ud = qp->qp_type == IB_QPT_UD; 1989 sg_ind = 0; 1990 last = NULL; 1991 for (i = 0; i < cmd.wr_count; ++i) { 1992 if (copy_from_user(user_wr, wqes + i * cmd.wqe_size, 1993 cmd.wqe_size)) { 1994 ret = -EFAULT; 1995 goto out_put; 1996 } 1997 1998 if (user_wr->num_sge + sg_ind > cmd.sge_count) { 1999 ret = -EINVAL; 2000 goto out_put; 2001 } 2002 2003 if (is_ud) { 2004 struct ib_ud_wr *ud; 2005 2006 if (user_wr->opcode != IB_WR_SEND && 2007 user_wr->opcode != IB_WR_SEND_WITH_IMM) { 2008 ret = -EINVAL; 2009 goto out_put; 2010 } 2011 2012 next_size = sizeof(*ud); 2013 ud = alloc_wr(next_size, user_wr->num_sge); 2014 if (!ud) { 2015 ret = -ENOMEM; 2016 goto out_put; 2017 } 2018 2019 ud->ah = uobj_get_obj_read(ah, UVERBS_OBJECT_AH, 2020 user_wr->wr.ud.ah, attrs); 2021 if (!ud->ah) { 2022 kfree(ud); 2023 ret = -EINVAL; 2024 goto out_put; 2025 } 2026 ud->remote_qpn = user_wr->wr.ud.remote_qpn; 2027 ud->remote_qkey = user_wr->wr.ud.remote_qkey; 2028 2029 next = &ud->wr; 2030 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM || 2031 user_wr->opcode == IB_WR_RDMA_WRITE || 2032 user_wr->opcode == IB_WR_RDMA_READ) { 2033 struct ib_rdma_wr *rdma; 2034 2035 next_size = sizeof(*rdma); 2036 rdma = alloc_wr(next_size, user_wr->num_sge); 2037 if (!rdma) { 2038 ret = -ENOMEM; 2039 goto out_put; 2040 } 2041 2042 rdma->remote_addr = user_wr->wr.rdma.remote_addr; 2043 rdma->rkey = user_wr->wr.rdma.rkey; 2044 2045 next = &rdma->wr; 2046 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP || 2047 user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) { 2048 struct ib_atomic_wr *atomic; 2049 2050 next_size = sizeof(*atomic); 2051 atomic = alloc_wr(next_size, user_wr->num_sge); 2052 if (!atomic) { 2053 ret = -ENOMEM; 2054 goto out_put; 2055 } 2056 2057 atomic->remote_addr = user_wr->wr.atomic.remote_addr; 2058 atomic->compare_add = user_wr->wr.atomic.compare_add; 2059 atomic->swap = user_wr->wr.atomic.swap; 2060 atomic->rkey = user_wr->wr.atomic.rkey; 2061 2062 next = &atomic->wr; 2063 } else if (user_wr->opcode == IB_WR_SEND || 2064 user_wr->opcode == IB_WR_SEND_WITH_IMM || 2065 user_wr->opcode == IB_WR_SEND_WITH_INV) { 2066 next_size = sizeof(*next); 2067 next = alloc_wr(next_size, user_wr->num_sge); 2068 if (!next) { 2069 ret = -ENOMEM; 2070 goto out_put; 2071 } 2072 } else { 2073 ret = -EINVAL; 2074 goto out_put; 2075 } 2076 2077 if (user_wr->opcode == IB_WR_SEND_WITH_IMM || 2078 user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) { 2079 next->ex.imm_data = 2080 (__be32 __force) user_wr->ex.imm_data; 2081 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) { 2082 next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey; 2083 } 2084 2085 if (!last) 2086 wr = next; 2087 else 2088 last->next = next; 2089 last = next; 2090 2091 next->next = NULL; 2092 next->wr_id = user_wr->wr_id; 2093 next->num_sge = user_wr->num_sge; 2094 next->opcode = user_wr->opcode; 2095 next->send_flags = user_wr->send_flags; 2096 2097 if (next->num_sge) { 2098 next->sg_list = (void *) next + 2099 ALIGN(next_size, sizeof(struct ib_sge)); 2100 if (copy_from_user(next->sg_list, sgls + sg_ind, 2101 next->num_sge * 2102 sizeof(struct ib_sge))) { 2103 ret = -EFAULT; 2104 goto out_put; 2105 } 2106 sg_ind += next->num_sge; 2107 } else 2108 next->sg_list = NULL; 2109 } 2110 2111 resp.bad_wr = 0; 2112 ret = qp->device->ops.post_send(qp->real_qp, wr, &bad_wr); 2113 if (ret) 2114 for (next = wr; next; next = next->next) { 2115 ++resp.bad_wr; 2116 if (next == bad_wr) 2117 break; 2118 } 2119 2120 ret2 = uverbs_response(attrs, &resp, sizeof(resp)); 2121 if (ret2) 2122 ret = ret2; 2123 2124 out_put: 2125 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, 2126 UVERBS_LOOKUP_READ); 2127 2128 while (wr) { 2129 if (is_ud && ud_wr(wr)->ah) 2130 uobj_put_obj_read(ud_wr(wr)->ah); 2131 next = wr->next; 2132 kfree(wr); 2133 wr = next; 2134 } 2135 2136 out: 2137 kfree(user_wr); 2138 2139 return ret; 2140 } 2141 2142 static struct ib_recv_wr * 2143 ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count, 2144 u32 wqe_size, u32 sge_count) 2145 { 2146 struct ib_uverbs_recv_wr *user_wr; 2147 struct ib_recv_wr *wr = NULL, *last, *next; 2148 int sg_ind; 2149 int i; 2150 int ret; 2151 const struct ib_sge __user *sgls; 2152 const void __user *wqes; 2153 2154 if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) 2155 return ERR_PTR(-EINVAL); 2156 2157 wqes = uverbs_request_next_ptr(iter, wqe_size * wr_count); 2158 if (IS_ERR(wqes)) 2159 return ERR_CAST(wqes); 2160 sgls = uverbs_request_next_ptr( 2161 iter, sge_count * sizeof(struct ib_uverbs_sge)); 2162 if (IS_ERR(sgls)) 2163 return ERR_CAST(sgls); 2164 ret = uverbs_request_finish(iter); 2165 if (ret) 2166 return ERR_PTR(ret); 2167 2168 user_wr = kmalloc(wqe_size, GFP_KERNEL); 2169 if (!user_wr) 2170 return ERR_PTR(-ENOMEM); 2171 2172 sg_ind = 0; 2173 last = NULL; 2174 for (i = 0; i < wr_count; ++i) { 2175 if (copy_from_user(user_wr, wqes + i * wqe_size, 2176 wqe_size)) { 2177 ret = -EFAULT; 2178 goto err; 2179 } 2180 2181 if (user_wr->num_sge + sg_ind > sge_count) { 2182 ret = -EINVAL; 2183 goto err; 2184 } 2185 2186 if (user_wr->num_sge >= 2187 (U32_MAX - ALIGN(sizeof *next, sizeof (struct ib_sge))) / 2188 sizeof (struct ib_sge)) { 2189 ret = -EINVAL; 2190 goto err; 2191 } 2192 2193 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + 2194 user_wr->num_sge * sizeof (struct ib_sge), 2195 GFP_KERNEL); 2196 if (!next) { 2197 ret = -ENOMEM; 2198 goto err; 2199 } 2200 2201 if (!last) 2202 wr = next; 2203 else 2204 last->next = next; 2205 last = next; 2206 2207 next->next = NULL; 2208 next->wr_id = user_wr->wr_id; 2209 next->num_sge = user_wr->num_sge; 2210 2211 if (next->num_sge) { 2212 next->sg_list = (void *) next + 2213 ALIGN(sizeof *next, sizeof (struct ib_sge)); 2214 if (copy_from_user(next->sg_list, sgls + sg_ind, 2215 next->num_sge * 2216 sizeof(struct ib_sge))) { 2217 ret = -EFAULT; 2218 goto err; 2219 } 2220 sg_ind += next->num_sge; 2221 } else 2222 next->sg_list = NULL; 2223 } 2224 2225 kfree(user_wr); 2226 return wr; 2227 2228 err: 2229 kfree(user_wr); 2230 2231 while (wr) { 2232 next = wr->next; 2233 kfree(wr); 2234 wr = next; 2235 } 2236 2237 return ERR_PTR(ret); 2238 } 2239 2240 static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs) 2241 { 2242 struct ib_uverbs_post_recv cmd; 2243 struct ib_uverbs_post_recv_resp resp; 2244 struct ib_recv_wr *wr, *next; 2245 const struct ib_recv_wr *bad_wr; 2246 struct ib_qp *qp; 2247 int ret, ret2; 2248 struct uverbs_req_iter iter; 2249 2250 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 2251 if (ret) 2252 return ret; 2253 2254 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size, 2255 cmd.sge_count); 2256 if (IS_ERR(wr)) 2257 return PTR_ERR(wr); 2258 2259 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2260 if (!qp) { 2261 ret = -EINVAL; 2262 goto out; 2263 } 2264 2265 resp.bad_wr = 0; 2266 ret = qp->device->ops.post_recv(qp->real_qp, wr, &bad_wr); 2267 2268 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, 2269 UVERBS_LOOKUP_READ); 2270 if (ret) { 2271 for (next = wr; next; next = next->next) { 2272 ++resp.bad_wr; 2273 if (next == bad_wr) 2274 break; 2275 } 2276 } 2277 2278 ret2 = uverbs_response(attrs, &resp, sizeof(resp)); 2279 if (ret2) 2280 ret = ret2; 2281 out: 2282 while (wr) { 2283 next = wr->next; 2284 kfree(wr); 2285 wr = next; 2286 } 2287 2288 return ret; 2289 } 2290 2291 static int ib_uverbs_post_srq_recv(struct uverbs_attr_bundle *attrs) 2292 { 2293 struct ib_uverbs_post_srq_recv cmd; 2294 struct ib_uverbs_post_srq_recv_resp resp; 2295 struct ib_recv_wr *wr, *next; 2296 const struct ib_recv_wr *bad_wr; 2297 struct ib_srq *srq; 2298 int ret, ret2; 2299 struct uverbs_req_iter iter; 2300 2301 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 2302 if (ret) 2303 return ret; 2304 2305 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size, 2306 cmd.sge_count); 2307 if (IS_ERR(wr)) 2308 return PTR_ERR(wr); 2309 2310 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 2311 if (!srq) { 2312 ret = -EINVAL; 2313 goto out; 2314 } 2315 2316 resp.bad_wr = 0; 2317 ret = srq->device->ops.post_srq_recv(srq, wr, &bad_wr); 2318 2319 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, 2320 UVERBS_LOOKUP_READ); 2321 2322 if (ret) 2323 for (next = wr; next; next = next->next) { 2324 ++resp.bad_wr; 2325 if (next == bad_wr) 2326 break; 2327 } 2328 2329 ret2 = uverbs_response(attrs, &resp, sizeof(resp)); 2330 if (ret2) 2331 ret = ret2; 2332 2333 out: 2334 while (wr) { 2335 next = wr->next; 2336 kfree(wr); 2337 wr = next; 2338 } 2339 2340 return ret; 2341 } 2342 2343 static int ib_uverbs_create_ah(struct uverbs_attr_bundle *attrs) 2344 { 2345 struct ib_uverbs_create_ah cmd; 2346 struct ib_uverbs_create_ah_resp resp; 2347 struct ib_uobject *uobj; 2348 struct ib_pd *pd; 2349 struct ib_ah *ah; 2350 struct rdma_ah_attr attr = {}; 2351 int ret; 2352 struct ib_device *ib_dev; 2353 2354 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2355 if (ret) 2356 return ret; 2357 2358 uobj = uobj_alloc(UVERBS_OBJECT_AH, attrs, &ib_dev); 2359 if (IS_ERR(uobj)) 2360 return PTR_ERR(uobj); 2361 2362 if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num)) { 2363 ret = -EINVAL; 2364 goto err; 2365 } 2366 2367 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 2368 if (!pd) { 2369 ret = -EINVAL; 2370 goto err; 2371 } 2372 2373 attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num); 2374 rdma_ah_set_make_grd(&attr, false); 2375 rdma_ah_set_dlid(&attr, cmd.attr.dlid); 2376 rdma_ah_set_sl(&attr, cmd.attr.sl); 2377 rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits); 2378 rdma_ah_set_static_rate(&attr, cmd.attr.static_rate); 2379 rdma_ah_set_port_num(&attr, cmd.attr.port_num); 2380 2381 if (cmd.attr.is_global) { 2382 rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label, 2383 cmd.attr.grh.sgid_index, 2384 cmd.attr.grh.hop_limit, 2385 cmd.attr.grh.traffic_class); 2386 rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid); 2387 } else { 2388 rdma_ah_set_ah_flags(&attr, 0); 2389 } 2390 2391 ah = rdma_create_user_ah(pd, &attr, &attrs->driver_udata); 2392 if (IS_ERR(ah)) { 2393 ret = PTR_ERR(ah); 2394 goto err_put; 2395 } 2396 2397 ah->uobject = uobj; 2398 uobj->user_handle = cmd.user_handle; 2399 uobj->object = ah; 2400 uobj_put_obj_read(pd); 2401 uobj_finalize_uobj_create(uobj, attrs); 2402 2403 resp.ah_handle = uobj->id; 2404 return uverbs_response(attrs, &resp, sizeof(resp)); 2405 2406 err_put: 2407 uobj_put_obj_read(pd); 2408 err: 2409 uobj_alloc_abort(uobj, attrs); 2410 return ret; 2411 } 2412 2413 static int ib_uverbs_destroy_ah(struct uverbs_attr_bundle *attrs) 2414 { 2415 struct ib_uverbs_destroy_ah cmd; 2416 int ret; 2417 2418 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2419 if (ret) 2420 return ret; 2421 2422 return uobj_perform_destroy(UVERBS_OBJECT_AH, cmd.ah_handle, attrs); 2423 } 2424 2425 static int ib_uverbs_attach_mcast(struct uverbs_attr_bundle *attrs) 2426 { 2427 struct ib_uverbs_attach_mcast cmd; 2428 struct ib_qp *qp; 2429 struct ib_uqp_object *obj; 2430 struct ib_uverbs_mcast_entry *mcast; 2431 int ret; 2432 2433 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2434 if (ret) 2435 return ret; 2436 2437 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2438 if (!qp) 2439 return -EINVAL; 2440 2441 obj = qp->uobject; 2442 2443 mutex_lock(&obj->mcast_lock); 2444 list_for_each_entry(mcast, &obj->mcast_list, list) 2445 if (cmd.mlid == mcast->lid && 2446 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { 2447 ret = 0; 2448 goto out_put; 2449 } 2450 2451 mcast = kmalloc(sizeof *mcast, GFP_KERNEL); 2452 if (!mcast) { 2453 ret = -ENOMEM; 2454 goto out_put; 2455 } 2456 2457 mcast->lid = cmd.mlid; 2458 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); 2459 2460 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); 2461 if (!ret) 2462 list_add_tail(&mcast->list, &obj->mcast_list); 2463 else 2464 kfree(mcast); 2465 2466 out_put: 2467 mutex_unlock(&obj->mcast_lock); 2468 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, 2469 UVERBS_LOOKUP_READ); 2470 2471 return ret; 2472 } 2473 2474 static int ib_uverbs_detach_mcast(struct uverbs_attr_bundle *attrs) 2475 { 2476 struct ib_uverbs_detach_mcast cmd; 2477 struct ib_uqp_object *obj; 2478 struct ib_qp *qp; 2479 struct ib_uverbs_mcast_entry *mcast; 2480 int ret; 2481 bool found = false; 2482 2483 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2484 if (ret) 2485 return ret; 2486 2487 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2488 if (!qp) 2489 return -EINVAL; 2490 2491 obj = qp->uobject; 2492 mutex_lock(&obj->mcast_lock); 2493 2494 list_for_each_entry(mcast, &obj->mcast_list, list) 2495 if (cmd.mlid == mcast->lid && 2496 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { 2497 list_del(&mcast->list); 2498 kfree(mcast); 2499 found = true; 2500 break; 2501 } 2502 2503 if (!found) { 2504 ret = -EINVAL; 2505 goto out_put; 2506 } 2507 2508 ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid); 2509 2510 out_put: 2511 mutex_unlock(&obj->mcast_lock); 2512 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, 2513 UVERBS_LOOKUP_READ); 2514 return ret; 2515 } 2516 2517 struct ib_uflow_resources *flow_resources_alloc(size_t num_specs) 2518 { 2519 struct ib_uflow_resources *resources; 2520 2521 resources = kzalloc(sizeof(*resources), GFP_KERNEL); 2522 2523 if (!resources) 2524 return NULL; 2525 2526 if (!num_specs) 2527 goto out; 2528 2529 resources->counters = 2530 kcalloc(num_specs, sizeof(*resources->counters), GFP_KERNEL); 2531 resources->collection = 2532 kcalloc(num_specs, sizeof(*resources->collection), GFP_KERNEL); 2533 2534 if (!resources->counters || !resources->collection) 2535 goto err; 2536 2537 out: 2538 resources->max = num_specs; 2539 return resources; 2540 2541 err: 2542 kfree(resources->counters); 2543 kfree(resources); 2544 2545 return NULL; 2546 } 2547 EXPORT_SYMBOL(flow_resources_alloc); 2548 2549 void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res) 2550 { 2551 unsigned int i; 2552 2553 if (!uflow_res) 2554 return; 2555 2556 for (i = 0; i < uflow_res->collection_num; i++) 2557 atomic_dec(&uflow_res->collection[i]->usecnt); 2558 2559 for (i = 0; i < uflow_res->counters_num; i++) 2560 atomic_dec(&uflow_res->counters[i]->usecnt); 2561 2562 kfree(uflow_res->collection); 2563 kfree(uflow_res->counters); 2564 kfree(uflow_res); 2565 } 2566 EXPORT_SYMBOL(ib_uverbs_flow_resources_free); 2567 2568 void flow_resources_add(struct ib_uflow_resources *uflow_res, 2569 enum ib_flow_spec_type type, 2570 void *ibobj) 2571 { 2572 WARN_ON(uflow_res->num >= uflow_res->max); 2573 2574 switch (type) { 2575 case IB_FLOW_SPEC_ACTION_HANDLE: 2576 atomic_inc(&((struct ib_flow_action *)ibobj)->usecnt); 2577 uflow_res->collection[uflow_res->collection_num++] = 2578 (struct ib_flow_action *)ibobj; 2579 break; 2580 case IB_FLOW_SPEC_ACTION_COUNT: 2581 atomic_inc(&((struct ib_counters *)ibobj)->usecnt); 2582 uflow_res->counters[uflow_res->counters_num++] = 2583 (struct ib_counters *)ibobj; 2584 break; 2585 default: 2586 WARN_ON(1); 2587 } 2588 2589 uflow_res->num++; 2590 } 2591 EXPORT_SYMBOL(flow_resources_add); 2592 2593 static int kern_spec_to_ib_spec_action(struct uverbs_attr_bundle *attrs, 2594 struct ib_uverbs_flow_spec *kern_spec, 2595 union ib_flow_spec *ib_spec, 2596 struct ib_uflow_resources *uflow_res) 2597 { 2598 ib_spec->type = kern_spec->type; 2599 switch (ib_spec->type) { 2600 case IB_FLOW_SPEC_ACTION_TAG: 2601 if (kern_spec->flow_tag.size != 2602 sizeof(struct ib_uverbs_flow_spec_action_tag)) 2603 return -EINVAL; 2604 2605 ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag); 2606 ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id; 2607 break; 2608 case IB_FLOW_SPEC_ACTION_DROP: 2609 if (kern_spec->drop.size != 2610 sizeof(struct ib_uverbs_flow_spec_action_drop)) 2611 return -EINVAL; 2612 2613 ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop); 2614 break; 2615 case IB_FLOW_SPEC_ACTION_HANDLE: 2616 if (kern_spec->action.size != 2617 sizeof(struct ib_uverbs_flow_spec_action_handle)) 2618 return -EOPNOTSUPP; 2619 ib_spec->action.act = uobj_get_obj_read(flow_action, 2620 UVERBS_OBJECT_FLOW_ACTION, 2621 kern_spec->action.handle, 2622 attrs); 2623 if (!ib_spec->action.act) 2624 return -EINVAL; 2625 ib_spec->action.size = 2626 sizeof(struct ib_flow_spec_action_handle); 2627 flow_resources_add(uflow_res, 2628 IB_FLOW_SPEC_ACTION_HANDLE, 2629 ib_spec->action.act); 2630 uobj_put_obj_read(ib_spec->action.act); 2631 break; 2632 case IB_FLOW_SPEC_ACTION_COUNT: 2633 if (kern_spec->flow_count.size != 2634 sizeof(struct ib_uverbs_flow_spec_action_count)) 2635 return -EINVAL; 2636 ib_spec->flow_count.counters = 2637 uobj_get_obj_read(counters, 2638 UVERBS_OBJECT_COUNTERS, 2639 kern_spec->flow_count.handle, 2640 attrs); 2641 if (!ib_spec->flow_count.counters) 2642 return -EINVAL; 2643 ib_spec->flow_count.size = 2644 sizeof(struct ib_flow_spec_action_count); 2645 flow_resources_add(uflow_res, 2646 IB_FLOW_SPEC_ACTION_COUNT, 2647 ib_spec->flow_count.counters); 2648 uobj_put_obj_read(ib_spec->flow_count.counters); 2649 break; 2650 default: 2651 return -EINVAL; 2652 } 2653 return 0; 2654 } 2655 2656 static ssize_t spec_filter_size(const void *kern_spec_filter, u16 kern_filter_size, 2657 u16 ib_real_filter_sz) 2658 { 2659 /* 2660 * User space filter structures must be 64 bit aligned, otherwise this 2661 * may pass, but we won't handle additional new attributes. 2662 */ 2663 2664 if (kern_filter_size > ib_real_filter_sz) { 2665 if (memchr_inv(kern_spec_filter + 2666 ib_real_filter_sz, 0, 2667 kern_filter_size - ib_real_filter_sz)) 2668 return -EINVAL; 2669 return ib_real_filter_sz; 2670 } 2671 return kern_filter_size; 2672 } 2673 2674 int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type, 2675 const void *kern_spec_mask, 2676 const void *kern_spec_val, 2677 size_t kern_filter_sz, 2678 union ib_flow_spec *ib_spec) 2679 { 2680 ssize_t actual_filter_sz; 2681 ssize_t ib_filter_sz; 2682 2683 /* User flow spec size must be aligned to 4 bytes */ 2684 if (kern_filter_sz != ALIGN(kern_filter_sz, 4)) 2685 return -EINVAL; 2686 2687 ib_spec->type = type; 2688 2689 if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL)) 2690 return -EINVAL; 2691 2692 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) { 2693 case IB_FLOW_SPEC_ETH: 2694 ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz); 2695 actual_filter_sz = spec_filter_size(kern_spec_mask, 2696 kern_filter_sz, 2697 ib_filter_sz); 2698 if (actual_filter_sz <= 0) 2699 return -EINVAL; 2700 ib_spec->size = sizeof(struct ib_flow_spec_eth); 2701 memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz); 2702 memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz); 2703 break; 2704 case IB_FLOW_SPEC_IPV4: 2705 ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz); 2706 actual_filter_sz = spec_filter_size(kern_spec_mask, 2707 kern_filter_sz, 2708 ib_filter_sz); 2709 if (actual_filter_sz <= 0) 2710 return -EINVAL; 2711 ib_spec->size = sizeof(struct ib_flow_spec_ipv4); 2712 memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz); 2713 memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz); 2714 break; 2715 case IB_FLOW_SPEC_IPV6: 2716 ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz); 2717 actual_filter_sz = spec_filter_size(kern_spec_mask, 2718 kern_filter_sz, 2719 ib_filter_sz); 2720 if (actual_filter_sz <= 0) 2721 return -EINVAL; 2722 ib_spec->size = sizeof(struct ib_flow_spec_ipv6); 2723 memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz); 2724 memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz); 2725 2726 if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) || 2727 (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20)) 2728 return -EINVAL; 2729 break; 2730 case IB_FLOW_SPEC_TCP: 2731 case IB_FLOW_SPEC_UDP: 2732 ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz); 2733 actual_filter_sz = spec_filter_size(kern_spec_mask, 2734 kern_filter_sz, 2735 ib_filter_sz); 2736 if (actual_filter_sz <= 0) 2737 return -EINVAL; 2738 ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp); 2739 memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz); 2740 memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz); 2741 break; 2742 case IB_FLOW_SPEC_VXLAN_TUNNEL: 2743 ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz); 2744 actual_filter_sz = spec_filter_size(kern_spec_mask, 2745 kern_filter_sz, 2746 ib_filter_sz); 2747 if (actual_filter_sz <= 0) 2748 return -EINVAL; 2749 ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel); 2750 memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz); 2751 memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz); 2752 2753 if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) || 2754 (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24)) 2755 return -EINVAL; 2756 break; 2757 case IB_FLOW_SPEC_ESP: 2758 ib_filter_sz = offsetof(struct ib_flow_esp_filter, real_sz); 2759 actual_filter_sz = spec_filter_size(kern_spec_mask, 2760 kern_filter_sz, 2761 ib_filter_sz); 2762 if (actual_filter_sz <= 0) 2763 return -EINVAL; 2764 ib_spec->esp.size = sizeof(struct ib_flow_spec_esp); 2765 memcpy(&ib_spec->esp.val, kern_spec_val, actual_filter_sz); 2766 memcpy(&ib_spec->esp.mask, kern_spec_mask, actual_filter_sz); 2767 break; 2768 case IB_FLOW_SPEC_GRE: 2769 ib_filter_sz = offsetof(struct ib_flow_gre_filter, real_sz); 2770 actual_filter_sz = spec_filter_size(kern_spec_mask, 2771 kern_filter_sz, 2772 ib_filter_sz); 2773 if (actual_filter_sz <= 0) 2774 return -EINVAL; 2775 ib_spec->gre.size = sizeof(struct ib_flow_spec_gre); 2776 memcpy(&ib_spec->gre.val, kern_spec_val, actual_filter_sz); 2777 memcpy(&ib_spec->gre.mask, kern_spec_mask, actual_filter_sz); 2778 break; 2779 case IB_FLOW_SPEC_MPLS: 2780 ib_filter_sz = offsetof(struct ib_flow_mpls_filter, real_sz); 2781 actual_filter_sz = spec_filter_size(kern_spec_mask, 2782 kern_filter_sz, 2783 ib_filter_sz); 2784 if (actual_filter_sz <= 0) 2785 return -EINVAL; 2786 ib_spec->mpls.size = sizeof(struct ib_flow_spec_mpls); 2787 memcpy(&ib_spec->mpls.val, kern_spec_val, actual_filter_sz); 2788 memcpy(&ib_spec->mpls.mask, kern_spec_mask, actual_filter_sz); 2789 break; 2790 default: 2791 return -EINVAL; 2792 } 2793 return 0; 2794 } 2795 2796 static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec, 2797 union ib_flow_spec *ib_spec) 2798 { 2799 size_t kern_filter_sz; 2800 void *kern_spec_mask; 2801 void *kern_spec_val; 2802 2803 if (check_sub_overflow((size_t)kern_spec->hdr.size, 2804 sizeof(struct ib_uverbs_flow_spec_hdr), 2805 &kern_filter_sz)) 2806 return -EINVAL; 2807 2808 kern_filter_sz /= 2; 2809 2810 kern_spec_val = (void *)kern_spec + 2811 sizeof(struct ib_uverbs_flow_spec_hdr); 2812 kern_spec_mask = kern_spec_val + kern_filter_sz; 2813 2814 return ib_uverbs_kern_spec_to_ib_spec_filter(kern_spec->type, 2815 kern_spec_mask, 2816 kern_spec_val, 2817 kern_filter_sz, ib_spec); 2818 } 2819 2820 static int kern_spec_to_ib_spec(struct uverbs_attr_bundle *attrs, 2821 struct ib_uverbs_flow_spec *kern_spec, 2822 union ib_flow_spec *ib_spec, 2823 struct ib_uflow_resources *uflow_res) 2824 { 2825 if (kern_spec->reserved) 2826 return -EINVAL; 2827 2828 if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG) 2829 return kern_spec_to_ib_spec_action(attrs, kern_spec, ib_spec, 2830 uflow_res); 2831 else 2832 return kern_spec_to_ib_spec_filter(kern_spec, ib_spec); 2833 } 2834 2835 static int ib_uverbs_ex_create_wq(struct uverbs_attr_bundle *attrs) 2836 { 2837 struct ib_uverbs_ex_create_wq cmd; 2838 struct ib_uverbs_ex_create_wq_resp resp = {}; 2839 struct ib_uwq_object *obj; 2840 int err = 0; 2841 struct ib_cq *cq; 2842 struct ib_pd *pd; 2843 struct ib_wq *wq; 2844 struct ib_wq_init_attr wq_init_attr = {}; 2845 struct ib_device *ib_dev; 2846 2847 err = uverbs_request(attrs, &cmd, sizeof(cmd)); 2848 if (err) 2849 return err; 2850 2851 if (cmd.comp_mask) 2852 return -EOPNOTSUPP; 2853 2854 obj = (struct ib_uwq_object *)uobj_alloc(UVERBS_OBJECT_WQ, attrs, 2855 &ib_dev); 2856 if (IS_ERR(obj)) 2857 return PTR_ERR(obj); 2858 2859 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 2860 if (!pd) { 2861 err = -EINVAL; 2862 goto err_uobj; 2863 } 2864 2865 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 2866 if (!cq) { 2867 err = -EINVAL; 2868 goto err_put_pd; 2869 } 2870 2871 wq_init_attr.cq = cq; 2872 wq_init_attr.max_sge = cmd.max_sge; 2873 wq_init_attr.max_wr = cmd.max_wr; 2874 wq_init_attr.wq_type = cmd.wq_type; 2875 wq_init_attr.event_handler = ib_uverbs_wq_event_handler; 2876 wq_init_attr.create_flags = cmd.create_flags; 2877 INIT_LIST_HEAD(&obj->uevent.event_list); 2878 obj->uevent.uobject.user_handle = cmd.user_handle; 2879 2880 wq = pd->device->ops.create_wq(pd, &wq_init_attr, &attrs->driver_udata); 2881 if (IS_ERR(wq)) { 2882 err = PTR_ERR(wq); 2883 goto err_put_cq; 2884 } 2885 2886 wq->uobject = obj; 2887 obj->uevent.uobject.object = wq; 2888 wq->wq_type = wq_init_attr.wq_type; 2889 wq->cq = cq; 2890 wq->pd = pd; 2891 wq->device = pd->device; 2892 atomic_set(&wq->usecnt, 0); 2893 atomic_inc(&pd->usecnt); 2894 atomic_inc(&cq->usecnt); 2895 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file); 2896 if (obj->uevent.event_file) 2897 uverbs_uobject_get(&obj->uevent.event_file->uobj); 2898 2899 uobj_put_obj_read(pd); 2900 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, 2901 UVERBS_LOOKUP_READ); 2902 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs); 2903 2904 resp.wq_handle = obj->uevent.uobject.id; 2905 resp.max_sge = wq_init_attr.max_sge; 2906 resp.max_wr = wq_init_attr.max_wr; 2907 resp.wqn = wq->wq_num; 2908 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 2909 return uverbs_response(attrs, &resp, sizeof(resp)); 2910 2911 err_put_cq: 2912 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, 2913 UVERBS_LOOKUP_READ); 2914 err_put_pd: 2915 uobj_put_obj_read(pd); 2916 err_uobj: 2917 uobj_alloc_abort(&obj->uevent.uobject, attrs); 2918 2919 return err; 2920 } 2921 2922 static int ib_uverbs_ex_destroy_wq(struct uverbs_attr_bundle *attrs) 2923 { 2924 struct ib_uverbs_ex_destroy_wq cmd; 2925 struct ib_uverbs_ex_destroy_wq_resp resp = {}; 2926 struct ib_uobject *uobj; 2927 struct ib_uwq_object *obj; 2928 int ret; 2929 2930 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2931 if (ret) 2932 return ret; 2933 2934 if (cmd.comp_mask) 2935 return -EOPNOTSUPP; 2936 2937 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 2938 uobj = uobj_get_destroy(UVERBS_OBJECT_WQ, cmd.wq_handle, attrs); 2939 if (IS_ERR(uobj)) 2940 return PTR_ERR(uobj); 2941 2942 obj = container_of(uobj, struct ib_uwq_object, uevent.uobject); 2943 resp.events_reported = obj->uevent.events_reported; 2944 2945 uobj_put_destroy(uobj); 2946 2947 return uverbs_response(attrs, &resp, sizeof(resp)); 2948 } 2949 2950 static int ib_uverbs_ex_modify_wq(struct uverbs_attr_bundle *attrs) 2951 { 2952 struct ib_uverbs_ex_modify_wq cmd; 2953 struct ib_wq *wq; 2954 struct ib_wq_attr wq_attr = {}; 2955 int ret; 2956 2957 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2958 if (ret) 2959 return ret; 2960 2961 if (!cmd.attr_mask) 2962 return -EINVAL; 2963 2964 if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS)) 2965 return -EINVAL; 2966 2967 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, cmd.wq_handle, attrs); 2968 if (!wq) 2969 return -EINVAL; 2970 2971 wq_attr.curr_wq_state = cmd.curr_wq_state; 2972 wq_attr.wq_state = cmd.wq_state; 2973 if (cmd.attr_mask & IB_WQ_FLAGS) { 2974 wq_attr.flags = cmd.flags; 2975 wq_attr.flags_mask = cmd.flags_mask; 2976 } 2977 ret = wq->device->ops.modify_wq(wq, &wq_attr, cmd.attr_mask, 2978 &attrs->driver_udata); 2979 rdma_lookup_put_uobject(&wq->uobject->uevent.uobject, 2980 UVERBS_LOOKUP_READ); 2981 return ret; 2982 } 2983 2984 static int ib_uverbs_ex_create_rwq_ind_table(struct uverbs_attr_bundle *attrs) 2985 { 2986 struct ib_uverbs_ex_create_rwq_ind_table cmd; 2987 struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {}; 2988 struct ib_uobject *uobj; 2989 int err; 2990 struct ib_rwq_ind_table_init_attr init_attr = {}; 2991 struct ib_rwq_ind_table *rwq_ind_tbl; 2992 struct ib_wq **wqs = NULL; 2993 u32 *wqs_handles = NULL; 2994 struct ib_wq *wq = NULL; 2995 int i, num_read_wqs; 2996 u32 num_wq_handles; 2997 struct uverbs_req_iter iter; 2998 struct ib_device *ib_dev; 2999 3000 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 3001 if (err) 3002 return err; 3003 3004 if (cmd.comp_mask) 3005 return -EOPNOTSUPP; 3006 3007 if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE) 3008 return -EINVAL; 3009 3010 num_wq_handles = 1 << cmd.log_ind_tbl_size; 3011 wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles), 3012 GFP_KERNEL); 3013 if (!wqs_handles) 3014 return -ENOMEM; 3015 3016 err = uverbs_request_next(&iter, wqs_handles, 3017 num_wq_handles * sizeof(__u32)); 3018 if (err) 3019 goto err_free; 3020 3021 err = uverbs_request_finish(&iter); 3022 if (err) 3023 goto err_free; 3024 3025 wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL); 3026 if (!wqs) { 3027 err = -ENOMEM; 3028 goto err_free; 3029 } 3030 3031 for (num_read_wqs = 0; num_read_wqs < num_wq_handles; 3032 num_read_wqs++) { 3033 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, 3034 wqs_handles[num_read_wqs], attrs); 3035 if (!wq) { 3036 err = -EINVAL; 3037 goto put_wqs; 3038 } 3039 3040 wqs[num_read_wqs] = wq; 3041 atomic_inc(&wqs[num_read_wqs]->usecnt); 3042 } 3043 3044 uobj = uobj_alloc(UVERBS_OBJECT_RWQ_IND_TBL, attrs, &ib_dev); 3045 if (IS_ERR(uobj)) { 3046 err = PTR_ERR(uobj); 3047 goto put_wqs; 3048 } 3049 3050 init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size; 3051 init_attr.ind_tbl = wqs; 3052 3053 rwq_ind_tbl = ib_dev->ops.create_rwq_ind_table(ib_dev, &init_attr, 3054 &attrs->driver_udata); 3055 3056 if (IS_ERR(rwq_ind_tbl)) { 3057 err = PTR_ERR(rwq_ind_tbl); 3058 goto err_uobj; 3059 } 3060 3061 rwq_ind_tbl->ind_tbl = wqs; 3062 rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size; 3063 rwq_ind_tbl->uobject = uobj; 3064 uobj->object = rwq_ind_tbl; 3065 rwq_ind_tbl->device = ib_dev; 3066 atomic_set(&rwq_ind_tbl->usecnt, 0); 3067 3068 for (i = 0; i < num_wq_handles; i++) 3069 rdma_lookup_put_uobject(&wqs[i]->uobject->uevent.uobject, 3070 UVERBS_LOOKUP_READ); 3071 kfree(wqs_handles); 3072 uobj_finalize_uobj_create(uobj, attrs); 3073 3074 resp.ind_tbl_handle = uobj->id; 3075 resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num; 3076 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 3077 return uverbs_response(attrs, &resp, sizeof(resp)); 3078 3079 err_uobj: 3080 uobj_alloc_abort(uobj, attrs); 3081 put_wqs: 3082 for (i = 0; i < num_read_wqs; i++) { 3083 rdma_lookup_put_uobject(&wqs[i]->uobject->uevent.uobject, 3084 UVERBS_LOOKUP_READ); 3085 atomic_dec(&wqs[i]->usecnt); 3086 } 3087 err_free: 3088 kfree(wqs_handles); 3089 kfree(wqs); 3090 return err; 3091 } 3092 3093 static int ib_uverbs_ex_destroy_rwq_ind_table(struct uverbs_attr_bundle *attrs) 3094 { 3095 struct ib_uverbs_ex_destroy_rwq_ind_table cmd; 3096 int ret; 3097 3098 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3099 if (ret) 3100 return ret; 3101 3102 if (cmd.comp_mask) 3103 return -EOPNOTSUPP; 3104 3105 return uobj_perform_destroy(UVERBS_OBJECT_RWQ_IND_TBL, 3106 cmd.ind_tbl_handle, attrs); 3107 } 3108 3109 static int ib_uverbs_ex_create_flow(struct uverbs_attr_bundle *attrs) 3110 { 3111 struct ib_uverbs_create_flow cmd; 3112 struct ib_uverbs_create_flow_resp resp = {}; 3113 struct ib_uobject *uobj; 3114 struct ib_flow *flow_id; 3115 struct ib_uverbs_flow_attr *kern_flow_attr; 3116 struct ib_flow_attr *flow_attr; 3117 struct ib_qp *qp; 3118 struct ib_uflow_resources *uflow_res; 3119 struct ib_uverbs_flow_spec_hdr *kern_spec; 3120 struct uverbs_req_iter iter; 3121 int err; 3122 void *ib_spec; 3123 int i; 3124 struct ib_device *ib_dev; 3125 3126 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 3127 if (err) 3128 return err; 3129 3130 if (cmd.comp_mask) 3131 return -EINVAL; 3132 3133 if (!capable(CAP_NET_RAW)) 3134 return -EPERM; 3135 3136 if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED) 3137 return -EINVAL; 3138 3139 if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) && 3140 ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) || 3141 (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT))) 3142 return -EINVAL; 3143 3144 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS) 3145 return -EINVAL; 3146 3147 if (cmd.flow_attr.size > 3148 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec))) 3149 return -EINVAL; 3150 3151 if (cmd.flow_attr.reserved[0] || 3152 cmd.flow_attr.reserved[1]) 3153 return -EINVAL; 3154 3155 if (cmd.flow_attr.num_of_specs) { 3156 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size, 3157 GFP_KERNEL); 3158 if (!kern_flow_attr) 3159 return -ENOMEM; 3160 3161 *kern_flow_attr = cmd.flow_attr; 3162 err = uverbs_request_next(&iter, &kern_flow_attr->flow_specs, 3163 cmd.flow_attr.size); 3164 if (err) 3165 goto err_free_attr; 3166 } else { 3167 kern_flow_attr = &cmd.flow_attr; 3168 } 3169 3170 err = uverbs_request_finish(&iter); 3171 if (err) 3172 goto err_free_attr; 3173 3174 uobj = uobj_alloc(UVERBS_OBJECT_FLOW, attrs, &ib_dev); 3175 if (IS_ERR(uobj)) { 3176 err = PTR_ERR(uobj); 3177 goto err_free_attr; 3178 } 3179 3180 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 3181 if (!qp) { 3182 err = -EINVAL; 3183 goto err_uobj; 3184 } 3185 3186 if (qp->qp_type != IB_QPT_UD && qp->qp_type != IB_QPT_RAW_PACKET) { 3187 err = -EINVAL; 3188 goto err_put; 3189 } 3190 3191 flow_attr = kzalloc(struct_size(flow_attr, flows, 3192 cmd.flow_attr.num_of_specs), GFP_KERNEL); 3193 if (!flow_attr) { 3194 err = -ENOMEM; 3195 goto err_put; 3196 } 3197 uflow_res = flow_resources_alloc(cmd.flow_attr.num_of_specs); 3198 if (!uflow_res) { 3199 err = -ENOMEM; 3200 goto err_free_flow_attr; 3201 } 3202 3203 flow_attr->type = kern_flow_attr->type; 3204 flow_attr->priority = kern_flow_attr->priority; 3205 flow_attr->num_of_specs = kern_flow_attr->num_of_specs; 3206 flow_attr->port = kern_flow_attr->port; 3207 flow_attr->flags = kern_flow_attr->flags; 3208 flow_attr->size = sizeof(*flow_attr); 3209 3210 kern_spec = kern_flow_attr->flow_specs; 3211 ib_spec = flow_attr + 1; 3212 for (i = 0; i < flow_attr->num_of_specs && 3213 cmd.flow_attr.size >= sizeof(*kern_spec) && 3214 cmd.flow_attr.size >= kern_spec->size; 3215 i++) { 3216 err = kern_spec_to_ib_spec( 3217 attrs, (struct ib_uverbs_flow_spec *)kern_spec, 3218 ib_spec, uflow_res); 3219 if (err) 3220 goto err_free; 3221 3222 flow_attr->size += 3223 ((union ib_flow_spec *) ib_spec)->size; 3224 cmd.flow_attr.size -= kern_spec->size; 3225 kern_spec = ((void *)kern_spec) + kern_spec->size; 3226 ib_spec += ((union ib_flow_spec *) ib_spec)->size; 3227 } 3228 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) { 3229 pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n", 3230 i, cmd.flow_attr.size); 3231 err = -EINVAL; 3232 goto err_free; 3233 } 3234 3235 flow_id = qp->device->ops.create_flow( 3236 qp, flow_attr, IB_FLOW_DOMAIN_USER, &attrs->driver_udata); 3237 3238 if (IS_ERR(flow_id)) { 3239 err = PTR_ERR(flow_id); 3240 goto err_free; 3241 } 3242 3243 ib_set_flow(uobj, flow_id, qp, qp->device, uflow_res); 3244 3245 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, 3246 UVERBS_LOOKUP_READ); 3247 kfree(flow_attr); 3248 3249 if (cmd.flow_attr.num_of_specs) 3250 kfree(kern_flow_attr); 3251 uobj_finalize_uobj_create(uobj, attrs); 3252 3253 resp.flow_handle = uobj->id; 3254 return uverbs_response(attrs, &resp, sizeof(resp)); 3255 3256 err_free: 3257 ib_uverbs_flow_resources_free(uflow_res); 3258 err_free_flow_attr: 3259 kfree(flow_attr); 3260 err_put: 3261 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, 3262 UVERBS_LOOKUP_READ); 3263 err_uobj: 3264 uobj_alloc_abort(uobj, attrs); 3265 err_free_attr: 3266 if (cmd.flow_attr.num_of_specs) 3267 kfree(kern_flow_attr); 3268 return err; 3269 } 3270 3271 static int ib_uverbs_ex_destroy_flow(struct uverbs_attr_bundle *attrs) 3272 { 3273 struct ib_uverbs_destroy_flow cmd; 3274 int ret; 3275 3276 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3277 if (ret) 3278 return ret; 3279 3280 if (cmd.comp_mask) 3281 return -EINVAL; 3282 3283 return uobj_perform_destroy(UVERBS_OBJECT_FLOW, cmd.flow_handle, attrs); 3284 } 3285 3286 static int __uverbs_create_xsrq(struct uverbs_attr_bundle *attrs, 3287 struct ib_uverbs_create_xsrq *cmd, 3288 struct ib_udata *udata) 3289 { 3290 struct ib_uverbs_create_srq_resp resp = {}; 3291 struct ib_usrq_object *obj; 3292 struct ib_pd *pd; 3293 struct ib_srq *srq; 3294 struct ib_srq_init_attr attr; 3295 int ret; 3296 struct ib_uobject *xrcd_uobj; 3297 struct ib_device *ib_dev; 3298 3299 obj = (struct ib_usrq_object *)uobj_alloc(UVERBS_OBJECT_SRQ, attrs, 3300 &ib_dev); 3301 if (IS_ERR(obj)) 3302 return PTR_ERR(obj); 3303 3304 if (cmd->srq_type == IB_SRQT_TM) 3305 attr.ext.tag_matching.max_num_tags = cmd->max_num_tags; 3306 3307 if (cmd->srq_type == IB_SRQT_XRC) { 3308 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->xrcd_handle, 3309 attrs); 3310 if (IS_ERR(xrcd_uobj)) { 3311 ret = -EINVAL; 3312 goto err; 3313 } 3314 3315 attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object; 3316 if (!attr.ext.xrc.xrcd) { 3317 ret = -EINVAL; 3318 goto err_put_xrcd; 3319 } 3320 3321 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); 3322 atomic_inc(&obj->uxrcd->refcnt); 3323 } 3324 3325 if (ib_srq_has_cq(cmd->srq_type)) { 3326 attr.ext.cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, 3327 cmd->cq_handle, attrs); 3328 if (!attr.ext.cq) { 3329 ret = -EINVAL; 3330 goto err_put_xrcd; 3331 } 3332 } 3333 3334 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, attrs); 3335 if (!pd) { 3336 ret = -EINVAL; 3337 goto err_put_cq; 3338 } 3339 3340 attr.event_handler = ib_uverbs_srq_event_handler; 3341 attr.srq_type = cmd->srq_type; 3342 attr.attr.max_wr = cmd->max_wr; 3343 attr.attr.max_sge = cmd->max_sge; 3344 attr.attr.srq_limit = cmd->srq_limit; 3345 3346 INIT_LIST_HEAD(&obj->uevent.event_list); 3347 obj->uevent.uobject.user_handle = cmd->user_handle; 3348 3349 srq = ib_create_srq_user(pd, &attr, obj, udata); 3350 if (IS_ERR(srq)) { 3351 ret = PTR_ERR(srq); 3352 goto err_put_pd; 3353 } 3354 3355 obj->uevent.uobject.object = srq; 3356 obj->uevent.uobject.user_handle = cmd->user_handle; 3357 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file); 3358 if (obj->uevent.event_file) 3359 uverbs_uobject_get(&obj->uevent.event_file->uobj); 3360 3361 if (cmd->srq_type == IB_SRQT_XRC) 3362 resp.srqn = srq->ext.xrc.srq_num; 3363 3364 if (cmd->srq_type == IB_SRQT_XRC) 3365 uobj_put_read(xrcd_uobj); 3366 3367 if (ib_srq_has_cq(cmd->srq_type)) 3368 rdma_lookup_put_uobject(&attr.ext.cq->uobject->uevent.uobject, 3369 UVERBS_LOOKUP_READ); 3370 3371 uobj_put_obj_read(pd); 3372 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs); 3373 3374 resp.srq_handle = obj->uevent.uobject.id; 3375 resp.max_wr = attr.attr.max_wr; 3376 resp.max_sge = attr.attr.max_sge; 3377 return uverbs_response(attrs, &resp, sizeof(resp)); 3378 3379 err_put_pd: 3380 uobj_put_obj_read(pd); 3381 err_put_cq: 3382 if (ib_srq_has_cq(cmd->srq_type)) 3383 rdma_lookup_put_uobject(&attr.ext.cq->uobject->uevent.uobject, 3384 UVERBS_LOOKUP_READ); 3385 3386 err_put_xrcd: 3387 if (cmd->srq_type == IB_SRQT_XRC) { 3388 atomic_dec(&obj->uxrcd->refcnt); 3389 uobj_put_read(xrcd_uobj); 3390 } 3391 3392 err: 3393 uobj_alloc_abort(&obj->uevent.uobject, attrs); 3394 return ret; 3395 } 3396 3397 static int ib_uverbs_create_srq(struct uverbs_attr_bundle *attrs) 3398 { 3399 struct ib_uverbs_create_srq cmd; 3400 struct ib_uverbs_create_xsrq xcmd; 3401 int ret; 3402 3403 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3404 if (ret) 3405 return ret; 3406 3407 memset(&xcmd, 0, sizeof(xcmd)); 3408 xcmd.response = cmd.response; 3409 xcmd.user_handle = cmd.user_handle; 3410 xcmd.srq_type = IB_SRQT_BASIC; 3411 xcmd.pd_handle = cmd.pd_handle; 3412 xcmd.max_wr = cmd.max_wr; 3413 xcmd.max_sge = cmd.max_sge; 3414 xcmd.srq_limit = cmd.srq_limit; 3415 3416 return __uverbs_create_xsrq(attrs, &xcmd, &attrs->driver_udata); 3417 } 3418 3419 static int ib_uverbs_create_xsrq(struct uverbs_attr_bundle *attrs) 3420 { 3421 struct ib_uverbs_create_xsrq cmd; 3422 int ret; 3423 3424 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3425 if (ret) 3426 return ret; 3427 3428 return __uverbs_create_xsrq(attrs, &cmd, &attrs->driver_udata); 3429 } 3430 3431 static int ib_uverbs_modify_srq(struct uverbs_attr_bundle *attrs) 3432 { 3433 struct ib_uverbs_modify_srq cmd; 3434 struct ib_srq *srq; 3435 struct ib_srq_attr attr; 3436 int ret; 3437 3438 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3439 if (ret) 3440 return ret; 3441 3442 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 3443 if (!srq) 3444 return -EINVAL; 3445 3446 attr.max_wr = cmd.max_wr; 3447 attr.srq_limit = cmd.srq_limit; 3448 3449 ret = srq->device->ops.modify_srq(srq, &attr, cmd.attr_mask, 3450 &attrs->driver_udata); 3451 3452 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, 3453 UVERBS_LOOKUP_READ); 3454 3455 return ret; 3456 } 3457 3458 static int ib_uverbs_query_srq(struct uverbs_attr_bundle *attrs) 3459 { 3460 struct ib_uverbs_query_srq cmd; 3461 struct ib_uverbs_query_srq_resp resp; 3462 struct ib_srq_attr attr; 3463 struct ib_srq *srq; 3464 int ret; 3465 3466 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3467 if (ret) 3468 return ret; 3469 3470 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 3471 if (!srq) 3472 return -EINVAL; 3473 3474 ret = ib_query_srq(srq, &attr); 3475 3476 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, 3477 UVERBS_LOOKUP_READ); 3478 3479 if (ret) 3480 return ret; 3481 3482 memset(&resp, 0, sizeof resp); 3483 3484 resp.max_wr = attr.max_wr; 3485 resp.max_sge = attr.max_sge; 3486 resp.srq_limit = attr.srq_limit; 3487 3488 return uverbs_response(attrs, &resp, sizeof(resp)); 3489 } 3490 3491 static int ib_uverbs_destroy_srq(struct uverbs_attr_bundle *attrs) 3492 { 3493 struct ib_uverbs_destroy_srq cmd; 3494 struct ib_uverbs_destroy_srq_resp resp; 3495 struct ib_uobject *uobj; 3496 struct ib_uevent_object *obj; 3497 int ret; 3498 3499 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3500 if (ret) 3501 return ret; 3502 3503 uobj = uobj_get_destroy(UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 3504 if (IS_ERR(uobj)) 3505 return PTR_ERR(uobj); 3506 3507 obj = container_of(uobj, struct ib_uevent_object, uobject); 3508 memset(&resp, 0, sizeof(resp)); 3509 resp.events_reported = obj->events_reported; 3510 3511 uobj_put_destroy(uobj); 3512 3513 return uverbs_response(attrs, &resp, sizeof(resp)); 3514 } 3515 3516 static int ib_uverbs_ex_query_device(struct uverbs_attr_bundle *attrs) 3517 { 3518 struct ib_uverbs_ex_query_device_resp resp = {}; 3519 struct ib_uverbs_ex_query_device cmd; 3520 struct ib_device_attr attr = {0}; 3521 struct ib_ucontext *ucontext; 3522 struct ib_device *ib_dev; 3523 int err; 3524 3525 ucontext = ib_uverbs_get_ucontext(attrs); 3526 if (IS_ERR(ucontext)) 3527 return PTR_ERR(ucontext); 3528 ib_dev = ucontext->device; 3529 3530 err = uverbs_request(attrs, &cmd, sizeof(cmd)); 3531 if (err) 3532 return err; 3533 3534 if (cmd.comp_mask) 3535 return -EINVAL; 3536 3537 if (cmd.reserved) 3538 return -EINVAL; 3539 3540 err = ib_dev->ops.query_device(ib_dev, &attr, &attrs->driver_udata); 3541 if (err) 3542 return err; 3543 3544 copy_query_dev_fields(ucontext, &resp.base, &attr); 3545 3546 resp.odp_caps.general_caps = attr.odp_caps.general_caps; 3547 resp.odp_caps.per_transport_caps.rc_odp_caps = 3548 attr.odp_caps.per_transport_caps.rc_odp_caps; 3549 resp.odp_caps.per_transport_caps.uc_odp_caps = 3550 attr.odp_caps.per_transport_caps.uc_odp_caps; 3551 resp.odp_caps.per_transport_caps.ud_odp_caps = 3552 attr.odp_caps.per_transport_caps.ud_odp_caps; 3553 resp.xrc_odp_caps = attr.odp_caps.per_transport_caps.xrc_odp_caps; 3554 3555 resp.timestamp_mask = attr.timestamp_mask; 3556 resp.hca_core_clock = attr.hca_core_clock; 3557 resp.device_cap_flags_ex = attr.device_cap_flags; 3558 resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts; 3559 resp.rss_caps.max_rwq_indirection_tables = 3560 attr.rss_caps.max_rwq_indirection_tables; 3561 resp.rss_caps.max_rwq_indirection_table_size = 3562 attr.rss_caps.max_rwq_indirection_table_size; 3563 resp.max_wq_type_rq = attr.max_wq_type_rq; 3564 resp.raw_packet_caps = attr.raw_packet_caps; 3565 resp.tm_caps.max_rndv_hdr_size = attr.tm_caps.max_rndv_hdr_size; 3566 resp.tm_caps.max_num_tags = attr.tm_caps.max_num_tags; 3567 resp.tm_caps.max_ops = attr.tm_caps.max_ops; 3568 resp.tm_caps.max_sge = attr.tm_caps.max_sge; 3569 resp.tm_caps.flags = attr.tm_caps.flags; 3570 resp.cq_moderation_caps.max_cq_moderation_count = 3571 attr.cq_caps.max_cq_moderation_count; 3572 resp.cq_moderation_caps.max_cq_moderation_period = 3573 attr.cq_caps.max_cq_moderation_period; 3574 resp.max_dm_size = attr.max_dm_size; 3575 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 3576 3577 return uverbs_response(attrs, &resp, sizeof(resp)); 3578 } 3579 3580 static int ib_uverbs_ex_modify_cq(struct uverbs_attr_bundle *attrs) 3581 { 3582 struct ib_uverbs_ex_modify_cq cmd; 3583 struct ib_cq *cq; 3584 int ret; 3585 3586 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3587 if (ret) 3588 return ret; 3589 3590 if (!cmd.attr_mask || cmd.reserved) 3591 return -EINVAL; 3592 3593 if (cmd.attr_mask > IB_CQ_MODERATE) 3594 return -EOPNOTSUPP; 3595 3596 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 3597 if (!cq) 3598 return -EINVAL; 3599 3600 ret = rdma_set_cq_moderation(cq, cmd.attr.cq_count, cmd.attr.cq_period); 3601 3602 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, 3603 UVERBS_LOOKUP_READ); 3604 return ret; 3605 } 3606 3607 /* 3608 * Describe the input structs for write(). Some write methods have an input 3609 * only struct, most have an input and output. If the struct has an output then 3610 * the 'response' u64 must be the first field in the request structure. 3611 * 3612 * If udata is present then both the request and response structs have a 3613 * trailing driver_data flex array. In this case the size of the base struct 3614 * cannot be changed. 3615 */ 3616 #define UAPI_DEF_WRITE_IO(req, resp) \ 3617 .write.has_resp = 1 + \ 3618 BUILD_BUG_ON_ZERO(offsetof(req, response) != 0) + \ 3619 BUILD_BUG_ON_ZERO(sizeof_field(req, response) != \ 3620 sizeof(u64)), \ 3621 .write.req_size = sizeof(req), .write.resp_size = sizeof(resp) 3622 3623 #define UAPI_DEF_WRITE_I(req) .write.req_size = sizeof(req) 3624 3625 #define UAPI_DEF_WRITE_UDATA_IO(req, resp) \ 3626 UAPI_DEF_WRITE_IO(req, resp), \ 3627 .write.has_udata = \ 3628 1 + \ 3629 BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \ 3630 sizeof(req)) + \ 3631 BUILD_BUG_ON_ZERO(offsetof(resp, driver_data) != \ 3632 sizeof(resp)) 3633 3634 #define UAPI_DEF_WRITE_UDATA_I(req) \ 3635 UAPI_DEF_WRITE_I(req), \ 3636 .write.has_udata = \ 3637 1 + BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \ 3638 sizeof(req)) 3639 3640 /* 3641 * The _EX versions are for use with WRITE_EX and allow the last struct member 3642 * to be specified. Buffers that do not include that member will be rejected. 3643 */ 3644 #define UAPI_DEF_WRITE_IO_EX(req, req_last_member, resp, resp_last_member) \ 3645 .write.has_resp = 1, \ 3646 .write.req_size = offsetofend(req, req_last_member), \ 3647 .write.resp_size = offsetofend(resp, resp_last_member) 3648 3649 #define UAPI_DEF_WRITE_I_EX(req, req_last_member) \ 3650 .write.req_size = offsetofend(req, req_last_member) 3651 3652 const struct uapi_definition uverbs_def_write_intf[] = { 3653 DECLARE_UVERBS_OBJECT( 3654 UVERBS_OBJECT_AH, 3655 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_AH, 3656 ib_uverbs_create_ah, 3657 UAPI_DEF_WRITE_UDATA_IO( 3658 struct ib_uverbs_create_ah, 3659 struct ib_uverbs_create_ah_resp), 3660 UAPI_DEF_METHOD_NEEDS_FN(create_ah)), 3661 DECLARE_UVERBS_WRITE( 3662 IB_USER_VERBS_CMD_DESTROY_AH, 3663 ib_uverbs_destroy_ah, 3664 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_ah), 3665 UAPI_DEF_METHOD_NEEDS_FN(destroy_ah))), 3666 3667 DECLARE_UVERBS_OBJECT( 3668 UVERBS_OBJECT_COMP_CHANNEL, 3669 DECLARE_UVERBS_WRITE( 3670 IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL, 3671 ib_uverbs_create_comp_channel, 3672 UAPI_DEF_WRITE_IO( 3673 struct ib_uverbs_create_comp_channel, 3674 struct ib_uverbs_create_comp_channel_resp))), 3675 3676 DECLARE_UVERBS_OBJECT( 3677 UVERBS_OBJECT_CQ, 3678 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_CQ, 3679 ib_uverbs_create_cq, 3680 UAPI_DEF_WRITE_UDATA_IO( 3681 struct ib_uverbs_create_cq, 3682 struct ib_uverbs_create_cq_resp), 3683 UAPI_DEF_METHOD_NEEDS_FN(create_cq)), 3684 DECLARE_UVERBS_WRITE( 3685 IB_USER_VERBS_CMD_DESTROY_CQ, 3686 ib_uverbs_destroy_cq, 3687 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_cq, 3688 struct ib_uverbs_destroy_cq_resp), 3689 UAPI_DEF_METHOD_NEEDS_FN(destroy_cq)), 3690 DECLARE_UVERBS_WRITE( 3691 IB_USER_VERBS_CMD_POLL_CQ, 3692 ib_uverbs_poll_cq, 3693 UAPI_DEF_WRITE_IO(struct ib_uverbs_poll_cq, 3694 struct ib_uverbs_poll_cq_resp), 3695 UAPI_DEF_METHOD_NEEDS_FN(poll_cq)), 3696 DECLARE_UVERBS_WRITE( 3697 IB_USER_VERBS_CMD_REQ_NOTIFY_CQ, 3698 ib_uverbs_req_notify_cq, 3699 UAPI_DEF_WRITE_I(struct ib_uverbs_req_notify_cq), 3700 UAPI_DEF_METHOD_NEEDS_FN(req_notify_cq)), 3701 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_RESIZE_CQ, 3702 ib_uverbs_resize_cq, 3703 UAPI_DEF_WRITE_UDATA_IO( 3704 struct ib_uverbs_resize_cq, 3705 struct ib_uverbs_resize_cq_resp), 3706 UAPI_DEF_METHOD_NEEDS_FN(resize_cq)), 3707 DECLARE_UVERBS_WRITE_EX( 3708 IB_USER_VERBS_EX_CMD_CREATE_CQ, 3709 ib_uverbs_ex_create_cq, 3710 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_cq, 3711 reserved, 3712 struct ib_uverbs_ex_create_cq_resp, 3713 response_length), 3714 UAPI_DEF_METHOD_NEEDS_FN(create_cq)), 3715 DECLARE_UVERBS_WRITE_EX( 3716 IB_USER_VERBS_EX_CMD_MODIFY_CQ, 3717 ib_uverbs_ex_modify_cq, 3718 UAPI_DEF_WRITE_I(struct ib_uverbs_ex_modify_cq), 3719 UAPI_DEF_METHOD_NEEDS_FN(create_cq))), 3720 3721 DECLARE_UVERBS_OBJECT( 3722 UVERBS_OBJECT_DEVICE, 3723 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_GET_CONTEXT, 3724 ib_uverbs_get_context, 3725 UAPI_DEF_WRITE_UDATA_IO( 3726 struct ib_uverbs_get_context, 3727 struct ib_uverbs_get_context_resp)), 3728 DECLARE_UVERBS_WRITE( 3729 IB_USER_VERBS_CMD_QUERY_DEVICE, 3730 ib_uverbs_query_device, 3731 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_device, 3732 struct ib_uverbs_query_device_resp)), 3733 DECLARE_UVERBS_WRITE( 3734 IB_USER_VERBS_CMD_QUERY_PORT, 3735 ib_uverbs_query_port, 3736 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_port, 3737 struct ib_uverbs_query_port_resp), 3738 UAPI_DEF_METHOD_NEEDS_FN(query_port)), 3739 DECLARE_UVERBS_WRITE_EX( 3740 IB_USER_VERBS_EX_CMD_QUERY_DEVICE, 3741 ib_uverbs_ex_query_device, 3742 UAPI_DEF_WRITE_IO_EX( 3743 struct ib_uverbs_ex_query_device, 3744 reserved, 3745 struct ib_uverbs_ex_query_device_resp, 3746 response_length), 3747 UAPI_DEF_METHOD_NEEDS_FN(query_device)), 3748 UAPI_DEF_OBJ_NEEDS_FN(alloc_ucontext), 3749 UAPI_DEF_OBJ_NEEDS_FN(dealloc_ucontext)), 3750 3751 DECLARE_UVERBS_OBJECT( 3752 UVERBS_OBJECT_FLOW, 3753 DECLARE_UVERBS_WRITE_EX( 3754 IB_USER_VERBS_EX_CMD_CREATE_FLOW, 3755 ib_uverbs_ex_create_flow, 3756 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_create_flow, 3757 flow_attr, 3758 struct ib_uverbs_create_flow_resp, 3759 flow_handle), 3760 UAPI_DEF_METHOD_NEEDS_FN(create_flow)), 3761 DECLARE_UVERBS_WRITE_EX( 3762 IB_USER_VERBS_EX_CMD_DESTROY_FLOW, 3763 ib_uverbs_ex_destroy_flow, 3764 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_flow), 3765 UAPI_DEF_METHOD_NEEDS_FN(destroy_flow))), 3766 3767 DECLARE_UVERBS_OBJECT( 3768 UVERBS_OBJECT_MR, 3769 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_DEREG_MR, 3770 ib_uverbs_dereg_mr, 3771 UAPI_DEF_WRITE_I(struct ib_uverbs_dereg_mr), 3772 UAPI_DEF_METHOD_NEEDS_FN(dereg_mr)), 3773 DECLARE_UVERBS_WRITE( 3774 IB_USER_VERBS_CMD_REG_MR, 3775 ib_uverbs_reg_mr, 3776 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_reg_mr, 3777 struct ib_uverbs_reg_mr_resp), 3778 UAPI_DEF_METHOD_NEEDS_FN(reg_user_mr)), 3779 DECLARE_UVERBS_WRITE( 3780 IB_USER_VERBS_CMD_REREG_MR, 3781 ib_uverbs_rereg_mr, 3782 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_rereg_mr, 3783 struct ib_uverbs_rereg_mr_resp), 3784 UAPI_DEF_METHOD_NEEDS_FN(rereg_user_mr))), 3785 3786 DECLARE_UVERBS_OBJECT( 3787 UVERBS_OBJECT_MW, 3788 DECLARE_UVERBS_WRITE( 3789 IB_USER_VERBS_CMD_ALLOC_MW, 3790 ib_uverbs_alloc_mw, 3791 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_mw, 3792 struct ib_uverbs_alloc_mw_resp), 3793 UAPI_DEF_METHOD_NEEDS_FN(alloc_mw)), 3794 DECLARE_UVERBS_WRITE( 3795 IB_USER_VERBS_CMD_DEALLOC_MW, 3796 ib_uverbs_dealloc_mw, 3797 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_mw), 3798 UAPI_DEF_METHOD_NEEDS_FN(dealloc_mw))), 3799 3800 DECLARE_UVERBS_OBJECT( 3801 UVERBS_OBJECT_PD, 3802 DECLARE_UVERBS_WRITE( 3803 IB_USER_VERBS_CMD_ALLOC_PD, 3804 ib_uverbs_alloc_pd, 3805 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_pd, 3806 struct ib_uverbs_alloc_pd_resp), 3807 UAPI_DEF_METHOD_NEEDS_FN(alloc_pd)), 3808 DECLARE_UVERBS_WRITE( 3809 IB_USER_VERBS_CMD_DEALLOC_PD, 3810 ib_uverbs_dealloc_pd, 3811 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_pd), 3812 UAPI_DEF_METHOD_NEEDS_FN(dealloc_pd))), 3813 3814 DECLARE_UVERBS_OBJECT( 3815 UVERBS_OBJECT_QP, 3816 DECLARE_UVERBS_WRITE( 3817 IB_USER_VERBS_CMD_ATTACH_MCAST, 3818 ib_uverbs_attach_mcast, 3819 UAPI_DEF_WRITE_I(struct ib_uverbs_attach_mcast), 3820 UAPI_DEF_METHOD_NEEDS_FN(attach_mcast), 3821 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)), 3822 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_QP, 3823 ib_uverbs_create_qp, 3824 UAPI_DEF_WRITE_UDATA_IO( 3825 struct ib_uverbs_create_qp, 3826 struct ib_uverbs_create_qp_resp), 3827 UAPI_DEF_METHOD_NEEDS_FN(create_qp)), 3828 DECLARE_UVERBS_WRITE( 3829 IB_USER_VERBS_CMD_DESTROY_QP, 3830 ib_uverbs_destroy_qp, 3831 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_qp, 3832 struct ib_uverbs_destroy_qp_resp), 3833 UAPI_DEF_METHOD_NEEDS_FN(destroy_qp)), 3834 DECLARE_UVERBS_WRITE( 3835 IB_USER_VERBS_CMD_DETACH_MCAST, 3836 ib_uverbs_detach_mcast, 3837 UAPI_DEF_WRITE_I(struct ib_uverbs_detach_mcast), 3838 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)), 3839 DECLARE_UVERBS_WRITE( 3840 IB_USER_VERBS_CMD_MODIFY_QP, 3841 ib_uverbs_modify_qp, 3842 UAPI_DEF_WRITE_I(struct ib_uverbs_modify_qp), 3843 UAPI_DEF_METHOD_NEEDS_FN(modify_qp)), 3844 DECLARE_UVERBS_WRITE( 3845 IB_USER_VERBS_CMD_POST_RECV, 3846 ib_uverbs_post_recv, 3847 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_recv, 3848 struct ib_uverbs_post_recv_resp), 3849 UAPI_DEF_METHOD_NEEDS_FN(post_recv)), 3850 DECLARE_UVERBS_WRITE( 3851 IB_USER_VERBS_CMD_POST_SEND, 3852 ib_uverbs_post_send, 3853 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_send, 3854 struct ib_uverbs_post_send_resp), 3855 UAPI_DEF_METHOD_NEEDS_FN(post_send)), 3856 DECLARE_UVERBS_WRITE( 3857 IB_USER_VERBS_CMD_QUERY_QP, 3858 ib_uverbs_query_qp, 3859 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_qp, 3860 struct ib_uverbs_query_qp_resp), 3861 UAPI_DEF_METHOD_NEEDS_FN(query_qp)), 3862 DECLARE_UVERBS_WRITE_EX( 3863 IB_USER_VERBS_EX_CMD_CREATE_QP, 3864 ib_uverbs_ex_create_qp, 3865 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_qp, 3866 comp_mask, 3867 struct ib_uverbs_ex_create_qp_resp, 3868 response_length), 3869 UAPI_DEF_METHOD_NEEDS_FN(create_qp)), 3870 DECLARE_UVERBS_WRITE_EX( 3871 IB_USER_VERBS_EX_CMD_MODIFY_QP, 3872 ib_uverbs_ex_modify_qp, 3873 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_modify_qp, 3874 base, 3875 struct ib_uverbs_ex_modify_qp_resp, 3876 response_length), 3877 UAPI_DEF_METHOD_NEEDS_FN(modify_qp))), 3878 3879 DECLARE_UVERBS_OBJECT( 3880 UVERBS_OBJECT_RWQ_IND_TBL, 3881 DECLARE_UVERBS_WRITE_EX( 3882 IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL, 3883 ib_uverbs_ex_create_rwq_ind_table, 3884 UAPI_DEF_WRITE_IO_EX( 3885 struct ib_uverbs_ex_create_rwq_ind_table, 3886 log_ind_tbl_size, 3887 struct ib_uverbs_ex_create_rwq_ind_table_resp, 3888 ind_tbl_num), 3889 UAPI_DEF_METHOD_NEEDS_FN(create_rwq_ind_table)), 3890 DECLARE_UVERBS_WRITE_EX( 3891 IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL, 3892 ib_uverbs_ex_destroy_rwq_ind_table, 3893 UAPI_DEF_WRITE_I( 3894 struct ib_uverbs_ex_destroy_rwq_ind_table), 3895 UAPI_DEF_METHOD_NEEDS_FN(destroy_rwq_ind_table))), 3896 3897 DECLARE_UVERBS_OBJECT( 3898 UVERBS_OBJECT_WQ, 3899 DECLARE_UVERBS_WRITE_EX( 3900 IB_USER_VERBS_EX_CMD_CREATE_WQ, 3901 ib_uverbs_ex_create_wq, 3902 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_wq, 3903 max_sge, 3904 struct ib_uverbs_ex_create_wq_resp, 3905 wqn), 3906 UAPI_DEF_METHOD_NEEDS_FN(create_wq)), 3907 DECLARE_UVERBS_WRITE_EX( 3908 IB_USER_VERBS_EX_CMD_DESTROY_WQ, 3909 ib_uverbs_ex_destroy_wq, 3910 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_destroy_wq, 3911 wq_handle, 3912 struct ib_uverbs_ex_destroy_wq_resp, 3913 reserved), 3914 UAPI_DEF_METHOD_NEEDS_FN(destroy_wq)), 3915 DECLARE_UVERBS_WRITE_EX( 3916 IB_USER_VERBS_EX_CMD_MODIFY_WQ, 3917 ib_uverbs_ex_modify_wq, 3918 UAPI_DEF_WRITE_I_EX(struct ib_uverbs_ex_modify_wq, 3919 curr_wq_state), 3920 UAPI_DEF_METHOD_NEEDS_FN(modify_wq))), 3921 3922 DECLARE_UVERBS_OBJECT( 3923 UVERBS_OBJECT_SRQ, 3924 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_SRQ, 3925 ib_uverbs_create_srq, 3926 UAPI_DEF_WRITE_UDATA_IO( 3927 struct ib_uverbs_create_srq, 3928 struct ib_uverbs_create_srq_resp), 3929 UAPI_DEF_METHOD_NEEDS_FN(create_srq)), 3930 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_XSRQ, 3931 ib_uverbs_create_xsrq, 3932 UAPI_DEF_WRITE_UDATA_IO( 3933 struct ib_uverbs_create_xsrq, 3934 struct ib_uverbs_create_srq_resp), 3935 UAPI_DEF_METHOD_NEEDS_FN(create_srq)), 3936 DECLARE_UVERBS_WRITE( 3937 IB_USER_VERBS_CMD_DESTROY_SRQ, 3938 ib_uverbs_destroy_srq, 3939 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_srq, 3940 struct ib_uverbs_destroy_srq_resp), 3941 UAPI_DEF_METHOD_NEEDS_FN(destroy_srq)), 3942 DECLARE_UVERBS_WRITE( 3943 IB_USER_VERBS_CMD_MODIFY_SRQ, 3944 ib_uverbs_modify_srq, 3945 UAPI_DEF_WRITE_UDATA_I(struct ib_uverbs_modify_srq), 3946 UAPI_DEF_METHOD_NEEDS_FN(modify_srq)), 3947 DECLARE_UVERBS_WRITE( 3948 IB_USER_VERBS_CMD_POST_SRQ_RECV, 3949 ib_uverbs_post_srq_recv, 3950 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_srq_recv, 3951 struct ib_uverbs_post_srq_recv_resp), 3952 UAPI_DEF_METHOD_NEEDS_FN(post_srq_recv)), 3953 DECLARE_UVERBS_WRITE( 3954 IB_USER_VERBS_CMD_QUERY_SRQ, 3955 ib_uverbs_query_srq, 3956 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_srq, 3957 struct ib_uverbs_query_srq_resp), 3958 UAPI_DEF_METHOD_NEEDS_FN(query_srq))), 3959 3960 DECLARE_UVERBS_OBJECT( 3961 UVERBS_OBJECT_XRCD, 3962 DECLARE_UVERBS_WRITE( 3963 IB_USER_VERBS_CMD_CLOSE_XRCD, 3964 ib_uverbs_close_xrcd, 3965 UAPI_DEF_WRITE_I(struct ib_uverbs_close_xrcd), 3966 UAPI_DEF_METHOD_NEEDS_FN(dealloc_xrcd)), 3967 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_QP, 3968 ib_uverbs_open_qp, 3969 UAPI_DEF_WRITE_UDATA_IO( 3970 struct ib_uverbs_open_qp, 3971 struct ib_uverbs_create_qp_resp)), 3972 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_XRCD, 3973 ib_uverbs_open_xrcd, 3974 UAPI_DEF_WRITE_UDATA_IO( 3975 struct ib_uverbs_open_xrcd, 3976 struct ib_uverbs_open_xrcd_resp), 3977 UAPI_DEF_METHOD_NEEDS_FN(alloc_xrcd))), 3978 3979 {}, 3980 }; 3981