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 static struct ib_uverbs_completion_event_file * 178 _ib_uverbs_lookup_comp_file(s32 fd, struct uverbs_attr_bundle *attrs) 179 { 180 struct ib_uobject *uobj = ufd_get_read(UVERBS_OBJECT_COMP_CHANNEL, 181 fd, attrs); 182 183 if (IS_ERR(uobj)) 184 return (void *)uobj; 185 186 uverbs_uobject_get(uobj); 187 uobj_put_read(uobj); 188 189 return container_of(uobj, struct ib_uverbs_completion_event_file, 190 uobj); 191 } 192 #define ib_uverbs_lookup_comp_file(_fd, _ufile) \ 193 _ib_uverbs_lookup_comp_file((_fd)*typecheck(s32, _fd), _ufile) 194 195 static int ib_uverbs_get_context(struct uverbs_attr_bundle *attrs) 196 { 197 struct ib_uverbs_file *file = attrs->ufile; 198 struct ib_uverbs_get_context cmd; 199 struct ib_uverbs_get_context_resp resp; 200 struct ib_ucontext *ucontext; 201 struct file *filp; 202 struct ib_rdmacg_object cg_obj; 203 struct ib_device *ib_dev; 204 int ret; 205 206 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 207 if (ret) 208 return ret; 209 210 mutex_lock(&file->ucontext_lock); 211 ib_dev = srcu_dereference(file->device->ib_dev, 212 &file->device->disassociate_srcu); 213 if (!ib_dev) { 214 ret = -EIO; 215 goto err; 216 } 217 218 if (file->ucontext) { 219 ret = -EINVAL; 220 goto err; 221 } 222 223 ret = ib_rdmacg_try_charge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE); 224 if (ret) 225 goto err; 226 227 ucontext = rdma_zalloc_drv_obj(ib_dev, ib_ucontext); 228 if (!ucontext) { 229 ret = -ENOMEM; 230 goto err_alloc; 231 } 232 233 attrs->context = ucontext; 234 235 ucontext->res.type = RDMA_RESTRACK_CTX; 236 ucontext->device = ib_dev; 237 ucontext->cg_obj = cg_obj; 238 /* ufile is required when some objects are released */ 239 ucontext->ufile = file; 240 241 ucontext->closing = false; 242 ucontext->cleanup_retryable = false; 243 244 mutex_init(&ucontext->per_mm_list_lock); 245 INIT_LIST_HEAD(&ucontext->per_mm_list); 246 247 ret = get_unused_fd_flags(O_CLOEXEC); 248 if (ret < 0) 249 goto err_free; 250 resp.async_fd = ret; 251 252 filp = ib_uverbs_alloc_async_event_file(file, ib_dev); 253 if (IS_ERR(filp)) { 254 ret = PTR_ERR(filp); 255 goto err_fd; 256 } 257 258 resp.num_comp_vectors = file->device->num_comp_vectors; 259 260 ret = uverbs_response(attrs, &resp, sizeof(resp)); 261 if (ret) 262 goto err_file; 263 264 ret = ib_dev->ops.alloc_ucontext(ucontext, &attrs->driver_udata); 265 if (ret) 266 goto err_file; 267 if (!(ib_dev->attrs.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING)) 268 ucontext->invalidate_range = NULL; 269 270 rdma_restrack_uadd(&ucontext->res); 271 272 fd_install(resp.async_fd, filp); 273 274 /* 275 * Make sure that ib_uverbs_get_ucontext() sees the pointer update 276 * only after all writes to setup the ucontext have completed 277 */ 278 smp_store_release(&file->ucontext, ucontext); 279 280 mutex_unlock(&file->ucontext_lock); 281 282 return 0; 283 284 err_file: 285 ib_uverbs_free_async_event_file(file); 286 fput(filp); 287 288 err_fd: 289 put_unused_fd(resp.async_fd); 290 291 err_free: 292 kfree(ucontext); 293 294 err_alloc: 295 ib_rdmacg_uncharge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE); 296 297 err: 298 mutex_unlock(&file->ucontext_lock); 299 return ret; 300 } 301 302 static void copy_query_dev_fields(struct ib_ucontext *ucontext, 303 struct ib_uverbs_query_device_resp *resp, 304 struct ib_device_attr *attr) 305 { 306 struct ib_device *ib_dev = ucontext->device; 307 308 resp->fw_ver = attr->fw_ver; 309 resp->node_guid = ib_dev->node_guid; 310 resp->sys_image_guid = attr->sys_image_guid; 311 resp->max_mr_size = attr->max_mr_size; 312 resp->page_size_cap = attr->page_size_cap; 313 resp->vendor_id = attr->vendor_id; 314 resp->vendor_part_id = attr->vendor_part_id; 315 resp->hw_ver = attr->hw_ver; 316 resp->max_qp = attr->max_qp; 317 resp->max_qp_wr = attr->max_qp_wr; 318 resp->device_cap_flags = lower_32_bits(attr->device_cap_flags); 319 resp->max_sge = min(attr->max_send_sge, attr->max_recv_sge); 320 resp->max_sge_rd = attr->max_sge_rd; 321 resp->max_cq = attr->max_cq; 322 resp->max_cqe = attr->max_cqe; 323 resp->max_mr = attr->max_mr; 324 resp->max_pd = attr->max_pd; 325 resp->max_qp_rd_atom = attr->max_qp_rd_atom; 326 resp->max_ee_rd_atom = attr->max_ee_rd_atom; 327 resp->max_res_rd_atom = attr->max_res_rd_atom; 328 resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom; 329 resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom; 330 resp->atomic_cap = attr->atomic_cap; 331 resp->max_ee = attr->max_ee; 332 resp->max_rdd = attr->max_rdd; 333 resp->max_mw = attr->max_mw; 334 resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp; 335 resp->max_raw_ethy_qp = attr->max_raw_ethy_qp; 336 resp->max_mcast_grp = attr->max_mcast_grp; 337 resp->max_mcast_qp_attach = attr->max_mcast_qp_attach; 338 resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach; 339 resp->max_ah = attr->max_ah; 340 resp->max_fmr = attr->max_fmr; 341 resp->max_map_per_fmr = attr->max_map_per_fmr; 342 resp->max_srq = attr->max_srq; 343 resp->max_srq_wr = attr->max_srq_wr; 344 resp->max_srq_sge = attr->max_srq_sge; 345 resp->max_pkeys = attr->max_pkeys; 346 resp->local_ca_ack_delay = attr->local_ca_ack_delay; 347 resp->phys_port_cnt = ib_dev->phys_port_cnt; 348 } 349 350 static int ib_uverbs_query_device(struct uverbs_attr_bundle *attrs) 351 { 352 struct ib_uverbs_query_device cmd; 353 struct ib_uverbs_query_device_resp resp; 354 struct ib_ucontext *ucontext; 355 int ret; 356 357 ucontext = ib_uverbs_get_ucontext(attrs); 358 if (IS_ERR(ucontext)) 359 return PTR_ERR(ucontext); 360 361 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 362 if (ret) 363 return ret; 364 365 memset(&resp, 0, sizeof resp); 366 copy_query_dev_fields(ucontext, &resp, &ucontext->device->attrs); 367 368 return uverbs_response(attrs, &resp, sizeof(resp)); 369 } 370 371 static int ib_uverbs_query_port(struct uverbs_attr_bundle *attrs) 372 { 373 struct ib_uverbs_query_port cmd; 374 struct ib_uverbs_query_port_resp resp; 375 struct ib_port_attr attr; 376 int ret; 377 struct ib_ucontext *ucontext; 378 struct ib_device *ib_dev; 379 380 ucontext = ib_uverbs_get_ucontext(attrs); 381 if (IS_ERR(ucontext)) 382 return PTR_ERR(ucontext); 383 ib_dev = ucontext->device; 384 385 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 386 if (ret) 387 return ret; 388 389 ret = ib_query_port(ib_dev, cmd.port_num, &attr); 390 if (ret) 391 return ret; 392 393 memset(&resp, 0, sizeof resp); 394 copy_port_attr_to_resp(&attr, &resp, ib_dev, cmd.port_num); 395 396 return uverbs_response(attrs, &resp, sizeof(resp)); 397 } 398 399 static int ib_uverbs_alloc_pd(struct uverbs_attr_bundle *attrs) 400 { 401 struct ib_uverbs_alloc_pd cmd; 402 struct ib_uverbs_alloc_pd_resp resp; 403 struct ib_uobject *uobj; 404 struct ib_pd *pd; 405 int ret; 406 struct ib_device *ib_dev; 407 408 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 409 if (ret) 410 return ret; 411 412 uobj = uobj_alloc(UVERBS_OBJECT_PD, attrs, &ib_dev); 413 if (IS_ERR(uobj)) 414 return PTR_ERR(uobj); 415 416 pd = rdma_zalloc_drv_obj(ib_dev, ib_pd); 417 if (!pd) { 418 ret = -ENOMEM; 419 goto err; 420 } 421 422 pd->device = ib_dev; 423 pd->uobject = uobj; 424 pd->__internal_mr = NULL; 425 atomic_set(&pd->usecnt, 0); 426 pd->res.type = RDMA_RESTRACK_PD; 427 428 ret = ib_dev->ops.alloc_pd(pd, &attrs->driver_udata); 429 if (ret) 430 goto err_alloc; 431 432 uobj->object = pd; 433 memset(&resp, 0, sizeof resp); 434 resp.pd_handle = uobj->id; 435 rdma_restrack_uadd(&pd->res); 436 437 ret = uverbs_response(attrs, &resp, sizeof(resp)); 438 if (ret) 439 goto err_copy; 440 441 return uobj_alloc_commit(uobj, attrs); 442 443 err_copy: 444 ib_dealloc_pd_user(pd, &attrs->driver_udata); 445 pd = NULL; 446 err_alloc: 447 kfree(pd); 448 err: 449 uobj_alloc_abort(uobj, attrs); 450 return ret; 451 } 452 453 static int ib_uverbs_dealloc_pd(struct uverbs_attr_bundle *attrs) 454 { 455 struct ib_uverbs_dealloc_pd cmd; 456 int ret; 457 458 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 459 if (ret) 460 return ret; 461 462 return uobj_perform_destroy(UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 463 } 464 465 struct xrcd_table_entry { 466 struct rb_node node; 467 struct ib_xrcd *xrcd; 468 struct inode *inode; 469 }; 470 471 static int xrcd_table_insert(struct ib_uverbs_device *dev, 472 struct inode *inode, 473 struct ib_xrcd *xrcd) 474 { 475 struct xrcd_table_entry *entry, *scan; 476 struct rb_node **p = &dev->xrcd_tree.rb_node; 477 struct rb_node *parent = NULL; 478 479 entry = kmalloc(sizeof *entry, GFP_KERNEL); 480 if (!entry) 481 return -ENOMEM; 482 483 entry->xrcd = xrcd; 484 entry->inode = inode; 485 486 while (*p) { 487 parent = *p; 488 scan = rb_entry(parent, struct xrcd_table_entry, node); 489 490 if (inode < scan->inode) { 491 p = &(*p)->rb_left; 492 } else if (inode > scan->inode) { 493 p = &(*p)->rb_right; 494 } else { 495 kfree(entry); 496 return -EEXIST; 497 } 498 } 499 500 rb_link_node(&entry->node, parent, p); 501 rb_insert_color(&entry->node, &dev->xrcd_tree); 502 igrab(inode); 503 return 0; 504 } 505 506 static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev, 507 struct inode *inode) 508 { 509 struct xrcd_table_entry *entry; 510 struct rb_node *p = dev->xrcd_tree.rb_node; 511 512 while (p) { 513 entry = rb_entry(p, struct xrcd_table_entry, node); 514 515 if (inode < entry->inode) 516 p = p->rb_left; 517 else if (inode > entry->inode) 518 p = p->rb_right; 519 else 520 return entry; 521 } 522 523 return NULL; 524 } 525 526 static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode) 527 { 528 struct xrcd_table_entry *entry; 529 530 entry = xrcd_table_search(dev, inode); 531 if (!entry) 532 return NULL; 533 534 return entry->xrcd; 535 } 536 537 static void xrcd_table_delete(struct ib_uverbs_device *dev, 538 struct inode *inode) 539 { 540 struct xrcd_table_entry *entry; 541 542 entry = xrcd_table_search(dev, inode); 543 if (entry) { 544 iput(inode); 545 rb_erase(&entry->node, &dev->xrcd_tree); 546 kfree(entry); 547 } 548 } 549 550 static int ib_uverbs_open_xrcd(struct uverbs_attr_bundle *attrs) 551 { 552 struct ib_uverbs_device *ibudev = attrs->ufile->device; 553 struct ib_uverbs_open_xrcd cmd; 554 struct ib_uverbs_open_xrcd_resp resp; 555 struct ib_uxrcd_object *obj; 556 struct ib_xrcd *xrcd = NULL; 557 struct fd f = {NULL, 0}; 558 struct inode *inode = NULL; 559 int ret = 0; 560 int new_xrcd = 0; 561 struct ib_device *ib_dev; 562 563 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 564 if (ret) 565 return ret; 566 567 mutex_lock(&ibudev->xrcd_tree_mutex); 568 569 if (cmd.fd != -1) { 570 /* search for file descriptor */ 571 f = fdget(cmd.fd); 572 if (!f.file) { 573 ret = -EBADF; 574 goto err_tree_mutex_unlock; 575 } 576 577 inode = file_inode(f.file); 578 xrcd = find_xrcd(ibudev, inode); 579 if (!xrcd && !(cmd.oflags & O_CREAT)) { 580 /* no file descriptor. Need CREATE flag */ 581 ret = -EAGAIN; 582 goto err_tree_mutex_unlock; 583 } 584 585 if (xrcd && cmd.oflags & O_EXCL) { 586 ret = -EINVAL; 587 goto err_tree_mutex_unlock; 588 } 589 } 590 591 obj = (struct ib_uxrcd_object *)uobj_alloc(UVERBS_OBJECT_XRCD, attrs, 592 &ib_dev); 593 if (IS_ERR(obj)) { 594 ret = PTR_ERR(obj); 595 goto err_tree_mutex_unlock; 596 } 597 598 if (!xrcd) { 599 xrcd = ib_dev->ops.alloc_xrcd(ib_dev, &attrs->driver_udata); 600 if (IS_ERR(xrcd)) { 601 ret = PTR_ERR(xrcd); 602 goto err; 603 } 604 605 xrcd->inode = inode; 606 xrcd->device = ib_dev; 607 atomic_set(&xrcd->usecnt, 0); 608 mutex_init(&xrcd->tgt_qp_mutex); 609 INIT_LIST_HEAD(&xrcd->tgt_qp_list); 610 new_xrcd = 1; 611 } 612 613 atomic_set(&obj->refcnt, 0); 614 obj->uobject.object = xrcd; 615 memset(&resp, 0, sizeof resp); 616 resp.xrcd_handle = obj->uobject.id; 617 618 if (inode) { 619 if (new_xrcd) { 620 /* create new inode/xrcd table entry */ 621 ret = xrcd_table_insert(ibudev, inode, xrcd); 622 if (ret) 623 goto err_dealloc_xrcd; 624 } 625 atomic_inc(&xrcd->usecnt); 626 } 627 628 ret = uverbs_response(attrs, &resp, sizeof(resp)); 629 if (ret) 630 goto err_copy; 631 632 if (f.file) 633 fdput(f); 634 635 mutex_unlock(&ibudev->xrcd_tree_mutex); 636 637 return uobj_alloc_commit(&obj->uobject, attrs); 638 639 err_copy: 640 if (inode) { 641 if (new_xrcd) 642 xrcd_table_delete(ibudev, inode); 643 atomic_dec(&xrcd->usecnt); 644 } 645 646 err_dealloc_xrcd: 647 ib_dealloc_xrcd(xrcd, &attrs->driver_udata); 648 649 err: 650 uobj_alloc_abort(&obj->uobject, attrs); 651 652 err_tree_mutex_unlock: 653 if (f.file) 654 fdput(f); 655 656 mutex_unlock(&ibudev->xrcd_tree_mutex); 657 658 return ret; 659 } 660 661 static int ib_uverbs_close_xrcd(struct uverbs_attr_bundle *attrs) 662 { 663 struct ib_uverbs_close_xrcd cmd; 664 int ret; 665 666 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 667 if (ret) 668 return ret; 669 670 return uobj_perform_destroy(UVERBS_OBJECT_XRCD, cmd.xrcd_handle, attrs); 671 } 672 673 int ib_uverbs_dealloc_xrcd(struct ib_uobject *uobject, struct ib_xrcd *xrcd, 674 enum rdma_remove_reason why, 675 struct uverbs_attr_bundle *attrs) 676 { 677 struct inode *inode; 678 int ret; 679 struct ib_uverbs_device *dev = attrs->ufile->device; 680 681 inode = xrcd->inode; 682 if (inode && !atomic_dec_and_test(&xrcd->usecnt)) 683 return 0; 684 685 ret = ib_dealloc_xrcd(xrcd, &attrs->driver_udata); 686 687 if (ib_is_destroy_retryable(ret, why, uobject)) { 688 atomic_inc(&xrcd->usecnt); 689 return ret; 690 } 691 692 if (inode) 693 xrcd_table_delete(dev, inode); 694 695 return ret; 696 } 697 698 static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs) 699 { 700 struct ib_uverbs_reg_mr cmd; 701 struct ib_uverbs_reg_mr_resp resp; 702 struct ib_uobject *uobj; 703 struct ib_pd *pd; 704 struct ib_mr *mr; 705 int ret; 706 struct ib_device *ib_dev; 707 708 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 709 if (ret) 710 return ret; 711 712 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) 713 return -EINVAL; 714 715 ret = ib_check_mr_access(cmd.access_flags); 716 if (ret) 717 return ret; 718 719 uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev); 720 if (IS_ERR(uobj)) 721 return PTR_ERR(uobj); 722 723 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 724 if (!pd) { 725 ret = -EINVAL; 726 goto err_free; 727 } 728 729 if (cmd.access_flags & IB_ACCESS_ON_DEMAND) { 730 if (!(pd->device->attrs.device_cap_flags & 731 IB_DEVICE_ON_DEMAND_PAGING)) { 732 pr_debug("ODP support not available\n"); 733 ret = -EINVAL; 734 goto err_put; 735 } 736 } 737 738 mr = pd->device->ops.reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, 739 cmd.access_flags, 740 &attrs->driver_udata); 741 if (IS_ERR(mr)) { 742 ret = PTR_ERR(mr); 743 goto err_put; 744 } 745 746 mr->device = pd->device; 747 mr->pd = pd; 748 mr->dm = NULL; 749 mr->uobject = uobj; 750 atomic_inc(&pd->usecnt); 751 mr->res.type = RDMA_RESTRACK_MR; 752 rdma_restrack_uadd(&mr->res); 753 754 uobj->object = mr; 755 756 memset(&resp, 0, sizeof resp); 757 resp.lkey = mr->lkey; 758 resp.rkey = mr->rkey; 759 resp.mr_handle = uobj->id; 760 761 ret = uverbs_response(attrs, &resp, sizeof(resp)); 762 if (ret) 763 goto err_copy; 764 765 uobj_put_obj_read(pd); 766 767 return uobj_alloc_commit(uobj, attrs); 768 769 err_copy: 770 ib_dereg_mr_user(mr, &attrs->driver_udata); 771 772 err_put: 773 uobj_put_obj_read(pd); 774 775 err_free: 776 uobj_alloc_abort(uobj, attrs); 777 return ret; 778 } 779 780 static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs) 781 { 782 struct ib_uverbs_rereg_mr cmd; 783 struct ib_uverbs_rereg_mr_resp resp; 784 struct ib_pd *pd = NULL; 785 struct ib_mr *mr; 786 struct ib_pd *old_pd; 787 int ret; 788 struct ib_uobject *uobj; 789 790 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 791 if (ret) 792 return ret; 793 794 if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags) 795 return -EINVAL; 796 797 if ((cmd.flags & IB_MR_REREG_TRANS) && 798 (!cmd.start || !cmd.hca_va || 0 >= cmd.length || 799 (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))) 800 return -EINVAL; 801 802 uobj = uobj_get_write(UVERBS_OBJECT_MR, cmd.mr_handle, attrs); 803 if (IS_ERR(uobj)) 804 return PTR_ERR(uobj); 805 806 mr = uobj->object; 807 808 if (mr->dm) { 809 ret = -EINVAL; 810 goto put_uobjs; 811 } 812 813 if (cmd.flags & IB_MR_REREG_ACCESS) { 814 ret = ib_check_mr_access(cmd.access_flags); 815 if (ret) 816 goto put_uobjs; 817 } 818 819 if (cmd.flags & IB_MR_REREG_PD) { 820 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, 821 attrs); 822 if (!pd) { 823 ret = -EINVAL; 824 goto put_uobjs; 825 } 826 } 827 828 old_pd = mr->pd; 829 ret = mr->device->ops.rereg_user_mr(mr, cmd.flags, cmd.start, 830 cmd.length, cmd.hca_va, 831 cmd.access_flags, pd, 832 &attrs->driver_udata); 833 if (ret) 834 goto put_uobj_pd; 835 836 if (cmd.flags & IB_MR_REREG_PD) { 837 atomic_inc(&pd->usecnt); 838 mr->pd = pd; 839 atomic_dec(&old_pd->usecnt); 840 } 841 842 memset(&resp, 0, sizeof(resp)); 843 resp.lkey = mr->lkey; 844 resp.rkey = mr->rkey; 845 846 ret = uverbs_response(attrs, &resp, sizeof(resp)); 847 848 put_uobj_pd: 849 if (cmd.flags & IB_MR_REREG_PD) 850 uobj_put_obj_read(pd); 851 852 put_uobjs: 853 uobj_put_write(uobj); 854 855 return ret; 856 } 857 858 static int ib_uverbs_dereg_mr(struct uverbs_attr_bundle *attrs) 859 { 860 struct ib_uverbs_dereg_mr cmd; 861 int ret; 862 863 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 864 if (ret) 865 return ret; 866 867 return uobj_perform_destroy(UVERBS_OBJECT_MR, cmd.mr_handle, attrs); 868 } 869 870 static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs) 871 { 872 struct ib_uverbs_alloc_mw cmd; 873 struct ib_uverbs_alloc_mw_resp resp; 874 struct ib_uobject *uobj; 875 struct ib_pd *pd; 876 struct ib_mw *mw; 877 int ret; 878 struct ib_device *ib_dev; 879 880 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 881 if (ret) 882 return ret; 883 884 uobj = uobj_alloc(UVERBS_OBJECT_MW, attrs, &ib_dev); 885 if (IS_ERR(uobj)) 886 return PTR_ERR(uobj); 887 888 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 889 if (!pd) { 890 ret = -EINVAL; 891 goto err_free; 892 } 893 894 if (cmd.mw_type != IB_MW_TYPE_1 && cmd.mw_type != IB_MW_TYPE_2) { 895 ret = -EINVAL; 896 goto err_put; 897 } 898 899 mw = pd->device->ops.alloc_mw(pd, cmd.mw_type, &attrs->driver_udata); 900 if (IS_ERR(mw)) { 901 ret = PTR_ERR(mw); 902 goto err_put; 903 } 904 905 mw->device = pd->device; 906 mw->pd = pd; 907 mw->uobject = uobj; 908 atomic_inc(&pd->usecnt); 909 910 uobj->object = mw; 911 912 memset(&resp, 0, sizeof(resp)); 913 resp.rkey = mw->rkey; 914 resp.mw_handle = uobj->id; 915 916 ret = uverbs_response(attrs, &resp, sizeof(resp)); 917 if (ret) 918 goto err_copy; 919 920 uobj_put_obj_read(pd); 921 return uobj_alloc_commit(uobj, attrs); 922 923 err_copy: 924 uverbs_dealloc_mw(mw); 925 err_put: 926 uobj_put_obj_read(pd); 927 err_free: 928 uobj_alloc_abort(uobj, attrs); 929 return ret; 930 } 931 932 static int ib_uverbs_dealloc_mw(struct uverbs_attr_bundle *attrs) 933 { 934 struct ib_uverbs_dealloc_mw cmd; 935 int ret; 936 937 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 938 if (ret) 939 return ret; 940 941 return uobj_perform_destroy(UVERBS_OBJECT_MW, cmd.mw_handle, attrs); 942 } 943 944 static int ib_uverbs_create_comp_channel(struct uverbs_attr_bundle *attrs) 945 { 946 struct ib_uverbs_create_comp_channel cmd; 947 struct ib_uverbs_create_comp_channel_resp resp; 948 struct ib_uobject *uobj; 949 struct ib_uverbs_completion_event_file *ev_file; 950 struct ib_device *ib_dev; 951 int ret; 952 953 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 954 if (ret) 955 return ret; 956 957 uobj = uobj_alloc(UVERBS_OBJECT_COMP_CHANNEL, attrs, &ib_dev); 958 if (IS_ERR(uobj)) 959 return PTR_ERR(uobj); 960 961 resp.fd = uobj->id; 962 963 ev_file = container_of(uobj, struct ib_uverbs_completion_event_file, 964 uobj); 965 ib_uverbs_init_event_queue(&ev_file->ev_queue); 966 967 ret = uverbs_response(attrs, &resp, sizeof(resp)); 968 if (ret) { 969 uobj_alloc_abort(uobj, attrs); 970 return ret; 971 } 972 973 return uobj_alloc_commit(uobj, attrs); 974 } 975 976 static struct ib_ucq_object *create_cq(struct uverbs_attr_bundle *attrs, 977 struct ib_uverbs_ex_create_cq *cmd) 978 { 979 struct ib_ucq_object *obj; 980 struct ib_uverbs_completion_event_file *ev_file = NULL; 981 struct ib_cq *cq; 982 int ret; 983 struct ib_uverbs_ex_create_cq_resp resp; 984 struct ib_cq_init_attr attr = {}; 985 struct ib_device *ib_dev; 986 987 if (cmd->comp_vector >= attrs->ufile->device->num_comp_vectors) 988 return ERR_PTR(-EINVAL); 989 990 obj = (struct ib_ucq_object *)uobj_alloc(UVERBS_OBJECT_CQ, attrs, 991 &ib_dev); 992 if (IS_ERR(obj)) 993 return obj; 994 995 if (cmd->comp_channel >= 0) { 996 ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel, attrs); 997 if (IS_ERR(ev_file)) { 998 ret = PTR_ERR(ev_file); 999 goto err; 1000 } 1001 } 1002 1003 obj->uobject.user_handle = cmd->user_handle; 1004 obj->comp_events_reported = 0; 1005 obj->async_events_reported = 0; 1006 INIT_LIST_HEAD(&obj->comp_list); 1007 INIT_LIST_HEAD(&obj->async_list); 1008 1009 attr.cqe = cmd->cqe; 1010 attr.comp_vector = cmd->comp_vector; 1011 attr.flags = cmd->flags; 1012 1013 cq = ib_dev->ops.create_cq(ib_dev, &attr, &attrs->driver_udata); 1014 if (IS_ERR(cq)) { 1015 ret = PTR_ERR(cq); 1016 goto err_file; 1017 } 1018 1019 cq->device = ib_dev; 1020 cq->uobject = &obj->uobject; 1021 cq->comp_handler = ib_uverbs_comp_handler; 1022 cq->event_handler = ib_uverbs_cq_event_handler; 1023 cq->cq_context = ev_file ? &ev_file->ev_queue : NULL; 1024 atomic_set(&cq->usecnt, 0); 1025 1026 obj->uobject.object = cq; 1027 memset(&resp, 0, sizeof resp); 1028 resp.base.cq_handle = obj->uobject.id; 1029 resp.base.cqe = cq->cqe; 1030 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 1031 1032 cq->res.type = RDMA_RESTRACK_CQ; 1033 rdma_restrack_uadd(&cq->res); 1034 1035 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1036 if (ret) 1037 goto err_cb; 1038 1039 ret = uobj_alloc_commit(&obj->uobject, attrs); 1040 if (ret) 1041 return ERR_PTR(ret); 1042 return obj; 1043 1044 err_cb: 1045 ib_destroy_cq(cq); 1046 1047 err_file: 1048 if (ev_file) 1049 ib_uverbs_release_ucq(attrs->ufile, ev_file, obj); 1050 1051 err: 1052 uobj_alloc_abort(&obj->uobject, attrs); 1053 1054 return ERR_PTR(ret); 1055 } 1056 1057 static int ib_uverbs_create_cq(struct uverbs_attr_bundle *attrs) 1058 { 1059 struct ib_uverbs_create_cq cmd; 1060 struct ib_uverbs_ex_create_cq cmd_ex; 1061 struct ib_ucq_object *obj; 1062 int ret; 1063 1064 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1065 if (ret) 1066 return ret; 1067 1068 memset(&cmd_ex, 0, sizeof(cmd_ex)); 1069 cmd_ex.user_handle = cmd.user_handle; 1070 cmd_ex.cqe = cmd.cqe; 1071 cmd_ex.comp_vector = cmd.comp_vector; 1072 cmd_ex.comp_channel = cmd.comp_channel; 1073 1074 obj = create_cq(attrs, &cmd_ex); 1075 return PTR_ERR_OR_ZERO(obj); 1076 } 1077 1078 static int ib_uverbs_ex_create_cq(struct uverbs_attr_bundle *attrs) 1079 { 1080 struct ib_uverbs_ex_create_cq cmd; 1081 struct ib_ucq_object *obj; 1082 int ret; 1083 1084 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1085 if (ret) 1086 return ret; 1087 1088 if (cmd.comp_mask) 1089 return -EINVAL; 1090 1091 if (cmd.reserved) 1092 return -EINVAL; 1093 1094 obj = create_cq(attrs, &cmd); 1095 return PTR_ERR_OR_ZERO(obj); 1096 } 1097 1098 static int ib_uverbs_resize_cq(struct uverbs_attr_bundle *attrs) 1099 { 1100 struct ib_uverbs_resize_cq cmd; 1101 struct ib_uverbs_resize_cq_resp resp = {}; 1102 struct ib_cq *cq; 1103 int ret = -EINVAL; 1104 1105 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1106 if (ret) 1107 return ret; 1108 1109 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1110 if (!cq) 1111 return -EINVAL; 1112 1113 ret = cq->device->ops.resize_cq(cq, cmd.cqe, &attrs->driver_udata); 1114 if (ret) 1115 goto out; 1116 1117 resp.cqe = cq->cqe; 1118 1119 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1120 out: 1121 uobj_put_obj_read(cq); 1122 1123 return ret; 1124 } 1125 1126 static int copy_wc_to_user(struct ib_device *ib_dev, void __user *dest, 1127 struct ib_wc *wc) 1128 { 1129 struct ib_uverbs_wc tmp; 1130 1131 tmp.wr_id = wc->wr_id; 1132 tmp.status = wc->status; 1133 tmp.opcode = wc->opcode; 1134 tmp.vendor_err = wc->vendor_err; 1135 tmp.byte_len = wc->byte_len; 1136 tmp.ex.imm_data = wc->ex.imm_data; 1137 tmp.qp_num = wc->qp->qp_num; 1138 tmp.src_qp = wc->src_qp; 1139 tmp.wc_flags = wc->wc_flags; 1140 tmp.pkey_index = wc->pkey_index; 1141 if (rdma_cap_opa_ah(ib_dev, wc->port_num)) 1142 tmp.slid = OPA_TO_IB_UCAST_LID(wc->slid); 1143 else 1144 tmp.slid = ib_lid_cpu16(wc->slid); 1145 tmp.sl = wc->sl; 1146 tmp.dlid_path_bits = wc->dlid_path_bits; 1147 tmp.port_num = wc->port_num; 1148 tmp.reserved = 0; 1149 1150 if (copy_to_user(dest, &tmp, sizeof tmp)) 1151 return -EFAULT; 1152 1153 return 0; 1154 } 1155 1156 static int ib_uverbs_poll_cq(struct uverbs_attr_bundle *attrs) 1157 { 1158 struct ib_uverbs_poll_cq cmd; 1159 struct ib_uverbs_poll_cq_resp resp; 1160 u8 __user *header_ptr; 1161 u8 __user *data_ptr; 1162 struct ib_cq *cq; 1163 struct ib_wc wc; 1164 int ret; 1165 1166 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1167 if (ret) 1168 return ret; 1169 1170 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1171 if (!cq) 1172 return -EINVAL; 1173 1174 /* we copy a struct ib_uverbs_poll_cq_resp to user space */ 1175 header_ptr = attrs->ucore.outbuf; 1176 data_ptr = header_ptr + sizeof resp; 1177 1178 memset(&resp, 0, sizeof resp); 1179 while (resp.count < cmd.ne) { 1180 ret = ib_poll_cq(cq, 1, &wc); 1181 if (ret < 0) 1182 goto out_put; 1183 if (!ret) 1184 break; 1185 1186 ret = copy_wc_to_user(cq->device, data_ptr, &wc); 1187 if (ret) 1188 goto out_put; 1189 1190 data_ptr += sizeof(struct ib_uverbs_wc); 1191 ++resp.count; 1192 } 1193 1194 if (copy_to_user(header_ptr, &resp, sizeof resp)) { 1195 ret = -EFAULT; 1196 goto out_put; 1197 } 1198 ret = 0; 1199 1200 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT)) 1201 ret = uverbs_output_written(attrs, UVERBS_ATTR_CORE_OUT); 1202 1203 out_put: 1204 uobj_put_obj_read(cq); 1205 return ret; 1206 } 1207 1208 static int ib_uverbs_req_notify_cq(struct uverbs_attr_bundle *attrs) 1209 { 1210 struct ib_uverbs_req_notify_cq cmd; 1211 struct ib_cq *cq; 1212 int ret; 1213 1214 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1215 if (ret) 1216 return ret; 1217 1218 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1219 if (!cq) 1220 return -EINVAL; 1221 1222 ib_req_notify_cq(cq, cmd.solicited_only ? 1223 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); 1224 1225 uobj_put_obj_read(cq); 1226 1227 return 0; 1228 } 1229 1230 static int ib_uverbs_destroy_cq(struct uverbs_attr_bundle *attrs) 1231 { 1232 struct ib_uverbs_destroy_cq cmd; 1233 struct ib_uverbs_destroy_cq_resp resp; 1234 struct ib_uobject *uobj; 1235 struct ib_ucq_object *obj; 1236 int ret; 1237 1238 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1239 if (ret) 1240 return ret; 1241 1242 uobj = uobj_get_destroy(UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1243 if (IS_ERR(uobj)) 1244 return PTR_ERR(uobj); 1245 1246 obj = container_of(uobj, struct ib_ucq_object, uobject); 1247 memset(&resp, 0, sizeof(resp)); 1248 resp.comp_events_reported = obj->comp_events_reported; 1249 resp.async_events_reported = obj->async_events_reported; 1250 1251 uobj_put_destroy(uobj); 1252 1253 return uverbs_response(attrs, &resp, sizeof(resp)); 1254 } 1255 1256 static int create_qp(struct uverbs_attr_bundle *attrs, 1257 struct ib_uverbs_ex_create_qp *cmd) 1258 { 1259 struct ib_uqp_object *obj; 1260 struct ib_device *device; 1261 struct ib_pd *pd = NULL; 1262 struct ib_xrcd *xrcd = NULL; 1263 struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT); 1264 struct ib_cq *scq = NULL, *rcq = NULL; 1265 struct ib_srq *srq = NULL; 1266 struct ib_qp *qp; 1267 struct ib_qp_init_attr attr = {}; 1268 struct ib_uverbs_ex_create_qp_resp resp; 1269 int ret; 1270 struct ib_rwq_ind_table *ind_tbl = NULL; 1271 bool has_sq = true; 1272 struct ib_device *ib_dev; 1273 1274 if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW)) 1275 return -EPERM; 1276 1277 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs, 1278 &ib_dev); 1279 if (IS_ERR(obj)) 1280 return PTR_ERR(obj); 1281 obj->uxrcd = NULL; 1282 obj->uevent.uobject.user_handle = cmd->user_handle; 1283 mutex_init(&obj->mcast_lock); 1284 1285 if (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE) { 1286 ind_tbl = uobj_get_obj_read(rwq_ind_table, 1287 UVERBS_OBJECT_RWQ_IND_TBL, 1288 cmd->rwq_ind_tbl_handle, attrs); 1289 if (!ind_tbl) { 1290 ret = -EINVAL; 1291 goto err_put; 1292 } 1293 1294 attr.rwq_ind_tbl = ind_tbl; 1295 } 1296 1297 if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) { 1298 ret = -EINVAL; 1299 goto err_put; 1300 } 1301 1302 if (ind_tbl && !cmd->max_send_wr) 1303 has_sq = false; 1304 1305 if (cmd->qp_type == IB_QPT_XRC_TGT) { 1306 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->pd_handle, 1307 attrs); 1308 1309 if (IS_ERR(xrcd_uobj)) { 1310 ret = -EINVAL; 1311 goto err_put; 1312 } 1313 1314 xrcd = (struct ib_xrcd *)xrcd_uobj->object; 1315 if (!xrcd) { 1316 ret = -EINVAL; 1317 goto err_put; 1318 } 1319 device = xrcd->device; 1320 } else { 1321 if (cmd->qp_type == IB_QPT_XRC_INI) { 1322 cmd->max_recv_wr = 0; 1323 cmd->max_recv_sge = 0; 1324 } else { 1325 if (cmd->is_srq) { 1326 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, 1327 cmd->srq_handle, attrs); 1328 if (!srq || srq->srq_type == IB_SRQT_XRC) { 1329 ret = -EINVAL; 1330 goto err_put; 1331 } 1332 } 1333 1334 if (!ind_tbl) { 1335 if (cmd->recv_cq_handle != cmd->send_cq_handle) { 1336 rcq = uobj_get_obj_read( 1337 cq, UVERBS_OBJECT_CQ, 1338 cmd->recv_cq_handle, attrs); 1339 if (!rcq) { 1340 ret = -EINVAL; 1341 goto err_put; 1342 } 1343 } 1344 } 1345 } 1346 1347 if (has_sq) 1348 scq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, 1349 cmd->send_cq_handle, attrs); 1350 if (!ind_tbl) 1351 rcq = rcq ?: scq; 1352 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, 1353 attrs); 1354 if (!pd || (!scq && has_sq)) { 1355 ret = -EINVAL; 1356 goto err_put; 1357 } 1358 1359 device = pd->device; 1360 } 1361 1362 attr.event_handler = ib_uverbs_qp_event_handler; 1363 attr.qp_context = attrs->ufile; 1364 attr.send_cq = scq; 1365 attr.recv_cq = rcq; 1366 attr.srq = srq; 1367 attr.xrcd = xrcd; 1368 attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR : 1369 IB_SIGNAL_REQ_WR; 1370 attr.qp_type = cmd->qp_type; 1371 attr.create_flags = 0; 1372 1373 attr.cap.max_send_wr = cmd->max_send_wr; 1374 attr.cap.max_recv_wr = cmd->max_recv_wr; 1375 attr.cap.max_send_sge = cmd->max_send_sge; 1376 attr.cap.max_recv_sge = cmd->max_recv_sge; 1377 attr.cap.max_inline_data = cmd->max_inline_data; 1378 1379 obj->uevent.events_reported = 0; 1380 INIT_LIST_HEAD(&obj->uevent.event_list); 1381 INIT_LIST_HEAD(&obj->mcast_list); 1382 1383 attr.create_flags = cmd->create_flags; 1384 if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK | 1385 IB_QP_CREATE_CROSS_CHANNEL | 1386 IB_QP_CREATE_MANAGED_SEND | 1387 IB_QP_CREATE_MANAGED_RECV | 1388 IB_QP_CREATE_SCATTER_FCS | 1389 IB_QP_CREATE_CVLAN_STRIPPING | 1390 IB_QP_CREATE_SOURCE_QPN | 1391 IB_QP_CREATE_PCI_WRITE_END_PADDING)) { 1392 ret = -EINVAL; 1393 goto err_put; 1394 } 1395 1396 if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) { 1397 if (!capable(CAP_NET_RAW)) { 1398 ret = -EPERM; 1399 goto err_put; 1400 } 1401 1402 attr.source_qpn = cmd->source_qpn; 1403 } 1404 1405 if (cmd->qp_type == IB_QPT_XRC_TGT) 1406 qp = ib_create_qp(pd, &attr); 1407 else 1408 qp = _ib_create_qp(device, pd, &attr, &attrs->driver_udata, 1409 &obj->uevent.uobject); 1410 1411 if (IS_ERR(qp)) { 1412 ret = PTR_ERR(qp); 1413 goto err_put; 1414 } 1415 1416 if (cmd->qp_type != IB_QPT_XRC_TGT) { 1417 ret = ib_create_qp_security(qp, device); 1418 if (ret) 1419 goto err_cb; 1420 1421 qp->pd = pd; 1422 qp->send_cq = attr.send_cq; 1423 qp->recv_cq = attr.recv_cq; 1424 qp->srq = attr.srq; 1425 qp->rwq_ind_tbl = ind_tbl; 1426 qp->event_handler = attr.event_handler; 1427 qp->qp_context = attr.qp_context; 1428 qp->qp_type = attr.qp_type; 1429 atomic_set(&qp->usecnt, 0); 1430 atomic_inc(&pd->usecnt); 1431 qp->port = 0; 1432 if (attr.send_cq) 1433 atomic_inc(&attr.send_cq->usecnt); 1434 if (attr.recv_cq) 1435 atomic_inc(&attr.recv_cq->usecnt); 1436 if (attr.srq) 1437 atomic_inc(&attr.srq->usecnt); 1438 if (ind_tbl) 1439 atomic_inc(&ind_tbl->usecnt); 1440 } else { 1441 /* It is done in _ib_create_qp for other QP types */ 1442 qp->uobject = &obj->uevent.uobject; 1443 } 1444 1445 obj->uevent.uobject.object = qp; 1446 1447 memset(&resp, 0, sizeof resp); 1448 resp.base.qpn = qp->qp_num; 1449 resp.base.qp_handle = obj->uevent.uobject.id; 1450 resp.base.max_recv_sge = attr.cap.max_recv_sge; 1451 resp.base.max_send_sge = attr.cap.max_send_sge; 1452 resp.base.max_recv_wr = attr.cap.max_recv_wr; 1453 resp.base.max_send_wr = attr.cap.max_send_wr; 1454 resp.base.max_inline_data = attr.cap.max_inline_data; 1455 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 1456 1457 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1458 if (ret) 1459 goto err_cb; 1460 1461 if (xrcd) { 1462 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, 1463 uobject); 1464 atomic_inc(&obj->uxrcd->refcnt); 1465 uobj_put_read(xrcd_uobj); 1466 } 1467 1468 if (pd) 1469 uobj_put_obj_read(pd); 1470 if (scq) 1471 uobj_put_obj_read(scq); 1472 if (rcq && rcq != scq) 1473 uobj_put_obj_read(rcq); 1474 if (srq) 1475 uobj_put_obj_read(srq); 1476 if (ind_tbl) 1477 uobj_put_obj_read(ind_tbl); 1478 1479 return uobj_alloc_commit(&obj->uevent.uobject, attrs); 1480 err_cb: 1481 ib_destroy_qp(qp); 1482 1483 err_put: 1484 if (!IS_ERR(xrcd_uobj)) 1485 uobj_put_read(xrcd_uobj); 1486 if (pd) 1487 uobj_put_obj_read(pd); 1488 if (scq) 1489 uobj_put_obj_read(scq); 1490 if (rcq && rcq != scq) 1491 uobj_put_obj_read(rcq); 1492 if (srq) 1493 uobj_put_obj_read(srq); 1494 if (ind_tbl) 1495 uobj_put_obj_read(ind_tbl); 1496 1497 uobj_alloc_abort(&obj->uevent.uobject, attrs); 1498 return ret; 1499 } 1500 1501 static int ib_uverbs_create_qp(struct uverbs_attr_bundle *attrs) 1502 { 1503 struct ib_uverbs_create_qp cmd; 1504 struct ib_uverbs_ex_create_qp cmd_ex; 1505 int ret; 1506 1507 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1508 if (ret) 1509 return ret; 1510 1511 memset(&cmd_ex, 0, sizeof(cmd_ex)); 1512 cmd_ex.user_handle = cmd.user_handle; 1513 cmd_ex.pd_handle = cmd.pd_handle; 1514 cmd_ex.send_cq_handle = cmd.send_cq_handle; 1515 cmd_ex.recv_cq_handle = cmd.recv_cq_handle; 1516 cmd_ex.srq_handle = cmd.srq_handle; 1517 cmd_ex.max_send_wr = cmd.max_send_wr; 1518 cmd_ex.max_recv_wr = cmd.max_recv_wr; 1519 cmd_ex.max_send_sge = cmd.max_send_sge; 1520 cmd_ex.max_recv_sge = cmd.max_recv_sge; 1521 cmd_ex.max_inline_data = cmd.max_inline_data; 1522 cmd_ex.sq_sig_all = cmd.sq_sig_all; 1523 cmd_ex.qp_type = cmd.qp_type; 1524 cmd_ex.is_srq = cmd.is_srq; 1525 1526 return create_qp(attrs, &cmd_ex); 1527 } 1528 1529 static int ib_uverbs_ex_create_qp(struct uverbs_attr_bundle *attrs) 1530 { 1531 struct ib_uverbs_ex_create_qp cmd; 1532 int ret; 1533 1534 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1535 if (ret) 1536 return ret; 1537 1538 if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK) 1539 return -EINVAL; 1540 1541 if (cmd.reserved) 1542 return -EINVAL; 1543 1544 return create_qp(attrs, &cmd); 1545 } 1546 1547 static int ib_uverbs_open_qp(struct uverbs_attr_bundle *attrs) 1548 { 1549 struct ib_uverbs_open_qp cmd; 1550 struct ib_uverbs_create_qp_resp resp; 1551 struct ib_uqp_object *obj; 1552 struct ib_xrcd *xrcd; 1553 struct ib_uobject *uninitialized_var(xrcd_uobj); 1554 struct ib_qp *qp; 1555 struct ib_qp_open_attr attr; 1556 int ret; 1557 struct ib_device *ib_dev; 1558 1559 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1560 if (ret) 1561 return ret; 1562 1563 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs, 1564 &ib_dev); 1565 if (IS_ERR(obj)) 1566 return PTR_ERR(obj); 1567 1568 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd.pd_handle, attrs); 1569 if (IS_ERR(xrcd_uobj)) { 1570 ret = -EINVAL; 1571 goto err_put; 1572 } 1573 1574 xrcd = (struct ib_xrcd *)xrcd_uobj->object; 1575 if (!xrcd) { 1576 ret = -EINVAL; 1577 goto err_xrcd; 1578 } 1579 1580 attr.event_handler = ib_uverbs_qp_event_handler; 1581 attr.qp_context = attrs->ufile; 1582 attr.qp_num = cmd.qpn; 1583 attr.qp_type = cmd.qp_type; 1584 1585 obj->uevent.events_reported = 0; 1586 INIT_LIST_HEAD(&obj->uevent.event_list); 1587 INIT_LIST_HEAD(&obj->mcast_list); 1588 1589 qp = ib_open_qp(xrcd, &attr); 1590 if (IS_ERR(qp)) { 1591 ret = PTR_ERR(qp); 1592 goto err_xrcd; 1593 } 1594 1595 obj->uevent.uobject.object = qp; 1596 obj->uevent.uobject.user_handle = cmd.user_handle; 1597 1598 memset(&resp, 0, sizeof resp); 1599 resp.qpn = qp->qp_num; 1600 resp.qp_handle = obj->uevent.uobject.id; 1601 1602 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1603 if (ret) 1604 goto err_destroy; 1605 1606 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); 1607 atomic_inc(&obj->uxrcd->refcnt); 1608 qp->uobject = &obj->uevent.uobject; 1609 uobj_put_read(xrcd_uobj); 1610 1611 return uobj_alloc_commit(&obj->uevent.uobject, attrs); 1612 1613 err_destroy: 1614 ib_destroy_qp(qp); 1615 err_xrcd: 1616 uobj_put_read(xrcd_uobj); 1617 err_put: 1618 uobj_alloc_abort(&obj->uevent.uobject, attrs); 1619 return ret; 1620 } 1621 1622 static void copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest *uverb_attr, 1623 struct rdma_ah_attr *rdma_attr) 1624 { 1625 const struct ib_global_route *grh; 1626 1627 uverb_attr->dlid = rdma_ah_get_dlid(rdma_attr); 1628 uverb_attr->sl = rdma_ah_get_sl(rdma_attr); 1629 uverb_attr->src_path_bits = rdma_ah_get_path_bits(rdma_attr); 1630 uverb_attr->static_rate = rdma_ah_get_static_rate(rdma_attr); 1631 uverb_attr->is_global = !!(rdma_ah_get_ah_flags(rdma_attr) & 1632 IB_AH_GRH); 1633 if (uverb_attr->is_global) { 1634 grh = rdma_ah_read_grh(rdma_attr); 1635 memcpy(uverb_attr->dgid, grh->dgid.raw, 16); 1636 uverb_attr->flow_label = grh->flow_label; 1637 uverb_attr->sgid_index = grh->sgid_index; 1638 uverb_attr->hop_limit = grh->hop_limit; 1639 uverb_attr->traffic_class = grh->traffic_class; 1640 } 1641 uverb_attr->port_num = rdma_ah_get_port_num(rdma_attr); 1642 } 1643 1644 static int ib_uverbs_query_qp(struct uverbs_attr_bundle *attrs) 1645 { 1646 struct ib_uverbs_query_qp cmd; 1647 struct ib_uverbs_query_qp_resp resp; 1648 struct ib_qp *qp; 1649 struct ib_qp_attr *attr; 1650 struct ib_qp_init_attr *init_attr; 1651 int ret; 1652 1653 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1654 if (ret) 1655 return ret; 1656 1657 attr = kmalloc(sizeof *attr, GFP_KERNEL); 1658 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); 1659 if (!attr || !init_attr) { 1660 ret = -ENOMEM; 1661 goto out; 1662 } 1663 1664 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 1665 if (!qp) { 1666 ret = -EINVAL; 1667 goto out; 1668 } 1669 1670 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); 1671 1672 uobj_put_obj_read(qp); 1673 1674 if (ret) 1675 goto out; 1676 1677 memset(&resp, 0, sizeof resp); 1678 1679 resp.qp_state = attr->qp_state; 1680 resp.cur_qp_state = attr->cur_qp_state; 1681 resp.path_mtu = attr->path_mtu; 1682 resp.path_mig_state = attr->path_mig_state; 1683 resp.qkey = attr->qkey; 1684 resp.rq_psn = attr->rq_psn; 1685 resp.sq_psn = attr->sq_psn; 1686 resp.dest_qp_num = attr->dest_qp_num; 1687 resp.qp_access_flags = attr->qp_access_flags; 1688 resp.pkey_index = attr->pkey_index; 1689 resp.alt_pkey_index = attr->alt_pkey_index; 1690 resp.sq_draining = attr->sq_draining; 1691 resp.max_rd_atomic = attr->max_rd_atomic; 1692 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; 1693 resp.min_rnr_timer = attr->min_rnr_timer; 1694 resp.port_num = attr->port_num; 1695 resp.timeout = attr->timeout; 1696 resp.retry_cnt = attr->retry_cnt; 1697 resp.rnr_retry = attr->rnr_retry; 1698 resp.alt_port_num = attr->alt_port_num; 1699 resp.alt_timeout = attr->alt_timeout; 1700 1701 copy_ah_attr_to_uverbs(&resp.dest, &attr->ah_attr); 1702 copy_ah_attr_to_uverbs(&resp.alt_dest, &attr->alt_ah_attr); 1703 1704 resp.max_send_wr = init_attr->cap.max_send_wr; 1705 resp.max_recv_wr = init_attr->cap.max_recv_wr; 1706 resp.max_send_sge = init_attr->cap.max_send_sge; 1707 resp.max_recv_sge = init_attr->cap.max_recv_sge; 1708 resp.max_inline_data = init_attr->cap.max_inline_data; 1709 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; 1710 1711 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1712 1713 out: 1714 kfree(attr); 1715 kfree(init_attr); 1716 1717 return ret; 1718 } 1719 1720 /* Remove ignored fields set in the attribute mask */ 1721 static int modify_qp_mask(enum ib_qp_type qp_type, int mask) 1722 { 1723 switch (qp_type) { 1724 case IB_QPT_XRC_INI: 1725 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER); 1726 case IB_QPT_XRC_TGT: 1727 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT | 1728 IB_QP_RNR_RETRY); 1729 default: 1730 return mask; 1731 } 1732 } 1733 1734 static void copy_ah_attr_from_uverbs(struct ib_device *dev, 1735 struct rdma_ah_attr *rdma_attr, 1736 struct ib_uverbs_qp_dest *uverb_attr) 1737 { 1738 rdma_attr->type = rdma_ah_find_type(dev, uverb_attr->port_num); 1739 if (uverb_attr->is_global) { 1740 rdma_ah_set_grh(rdma_attr, NULL, 1741 uverb_attr->flow_label, 1742 uverb_attr->sgid_index, 1743 uverb_attr->hop_limit, 1744 uverb_attr->traffic_class); 1745 rdma_ah_set_dgid_raw(rdma_attr, uverb_attr->dgid); 1746 } else { 1747 rdma_ah_set_ah_flags(rdma_attr, 0); 1748 } 1749 rdma_ah_set_dlid(rdma_attr, uverb_attr->dlid); 1750 rdma_ah_set_sl(rdma_attr, uverb_attr->sl); 1751 rdma_ah_set_path_bits(rdma_attr, uverb_attr->src_path_bits); 1752 rdma_ah_set_static_rate(rdma_attr, uverb_attr->static_rate); 1753 rdma_ah_set_port_num(rdma_attr, uverb_attr->port_num); 1754 rdma_ah_set_make_grd(rdma_attr, false); 1755 } 1756 1757 static int modify_qp(struct uverbs_attr_bundle *attrs, 1758 struct ib_uverbs_ex_modify_qp *cmd) 1759 { 1760 struct ib_qp_attr *attr; 1761 struct ib_qp *qp; 1762 int ret; 1763 1764 attr = kzalloc(sizeof(*attr), GFP_KERNEL); 1765 if (!attr) 1766 return -ENOMEM; 1767 1768 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd->base.qp_handle, 1769 attrs); 1770 if (!qp) { 1771 ret = -EINVAL; 1772 goto out; 1773 } 1774 1775 if ((cmd->base.attr_mask & IB_QP_PORT) && 1776 !rdma_is_port_valid(qp->device, cmd->base.port_num)) { 1777 ret = -EINVAL; 1778 goto release_qp; 1779 } 1780 1781 if ((cmd->base.attr_mask & IB_QP_AV)) { 1782 if (!rdma_is_port_valid(qp->device, cmd->base.dest.port_num)) { 1783 ret = -EINVAL; 1784 goto release_qp; 1785 } 1786 1787 if (cmd->base.attr_mask & IB_QP_STATE && 1788 cmd->base.qp_state == IB_QPS_RTR) { 1789 /* We are in INIT->RTR TRANSITION (if we are not, 1790 * this transition will be rejected in subsequent checks). 1791 * In the INIT->RTR transition, we cannot have IB_QP_PORT set, 1792 * but the IB_QP_STATE flag is required. 1793 * 1794 * Since kernel 3.14 (commit dbf727de7440), the uverbs driver, 1795 * when IB_QP_AV is set, has required inclusion of a valid 1796 * port number in the primary AV. (AVs are created and handled 1797 * differently for infiniband and ethernet (RoCE) ports). 1798 * 1799 * Check the port number included in the primary AV against 1800 * the port number in the qp struct, which was set (and saved) 1801 * in the RST->INIT transition. 1802 */ 1803 if (cmd->base.dest.port_num != qp->real_qp->port) { 1804 ret = -EINVAL; 1805 goto release_qp; 1806 } 1807 } else { 1808 /* We are in SQD->SQD. (If we are not, this transition will 1809 * be rejected later in the verbs layer checks). 1810 * Check for both IB_QP_PORT and IB_QP_AV, these can be set 1811 * together in the SQD->SQD transition. 1812 * 1813 * If only IP_QP_AV was set, add in IB_QP_PORT as well (the 1814 * verbs layer driver does not track primary port changes 1815 * resulting from path migration. Thus, in SQD, if the primary 1816 * AV is modified, the primary port should also be modified). 1817 * 1818 * Note that in this transition, the IB_QP_STATE flag 1819 * is not allowed. 1820 */ 1821 if (((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT)) 1822 == (IB_QP_AV | IB_QP_PORT)) && 1823 cmd->base.port_num != cmd->base.dest.port_num) { 1824 ret = -EINVAL; 1825 goto release_qp; 1826 } 1827 if ((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT)) 1828 == IB_QP_AV) { 1829 cmd->base.attr_mask |= IB_QP_PORT; 1830 cmd->base.port_num = cmd->base.dest.port_num; 1831 } 1832 } 1833 } 1834 1835 if ((cmd->base.attr_mask & IB_QP_ALT_PATH) && 1836 (!rdma_is_port_valid(qp->device, cmd->base.alt_port_num) || 1837 !rdma_is_port_valid(qp->device, cmd->base.alt_dest.port_num) || 1838 cmd->base.alt_port_num != cmd->base.alt_dest.port_num)) { 1839 ret = -EINVAL; 1840 goto release_qp; 1841 } 1842 1843 if ((cmd->base.attr_mask & IB_QP_CUR_STATE && 1844 cmd->base.cur_qp_state > IB_QPS_ERR) || 1845 (cmd->base.attr_mask & IB_QP_STATE && 1846 cmd->base.qp_state > IB_QPS_ERR)) { 1847 ret = -EINVAL; 1848 goto release_qp; 1849 } 1850 1851 if (cmd->base.attr_mask & IB_QP_STATE) 1852 attr->qp_state = cmd->base.qp_state; 1853 if (cmd->base.attr_mask & IB_QP_CUR_STATE) 1854 attr->cur_qp_state = cmd->base.cur_qp_state; 1855 if (cmd->base.attr_mask & IB_QP_PATH_MTU) 1856 attr->path_mtu = cmd->base.path_mtu; 1857 if (cmd->base.attr_mask & IB_QP_PATH_MIG_STATE) 1858 attr->path_mig_state = cmd->base.path_mig_state; 1859 if (cmd->base.attr_mask & IB_QP_QKEY) 1860 attr->qkey = cmd->base.qkey; 1861 if (cmd->base.attr_mask & IB_QP_RQ_PSN) 1862 attr->rq_psn = cmd->base.rq_psn; 1863 if (cmd->base.attr_mask & IB_QP_SQ_PSN) 1864 attr->sq_psn = cmd->base.sq_psn; 1865 if (cmd->base.attr_mask & IB_QP_DEST_QPN) 1866 attr->dest_qp_num = cmd->base.dest_qp_num; 1867 if (cmd->base.attr_mask & IB_QP_ACCESS_FLAGS) 1868 attr->qp_access_flags = cmd->base.qp_access_flags; 1869 if (cmd->base.attr_mask & IB_QP_PKEY_INDEX) 1870 attr->pkey_index = cmd->base.pkey_index; 1871 if (cmd->base.attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) 1872 attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify; 1873 if (cmd->base.attr_mask & IB_QP_MAX_QP_RD_ATOMIC) 1874 attr->max_rd_atomic = cmd->base.max_rd_atomic; 1875 if (cmd->base.attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) 1876 attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic; 1877 if (cmd->base.attr_mask & IB_QP_MIN_RNR_TIMER) 1878 attr->min_rnr_timer = cmd->base.min_rnr_timer; 1879 if (cmd->base.attr_mask & IB_QP_PORT) 1880 attr->port_num = cmd->base.port_num; 1881 if (cmd->base.attr_mask & IB_QP_TIMEOUT) 1882 attr->timeout = cmd->base.timeout; 1883 if (cmd->base.attr_mask & IB_QP_RETRY_CNT) 1884 attr->retry_cnt = cmd->base.retry_cnt; 1885 if (cmd->base.attr_mask & IB_QP_RNR_RETRY) 1886 attr->rnr_retry = cmd->base.rnr_retry; 1887 if (cmd->base.attr_mask & IB_QP_ALT_PATH) { 1888 attr->alt_port_num = cmd->base.alt_port_num; 1889 attr->alt_timeout = cmd->base.alt_timeout; 1890 attr->alt_pkey_index = cmd->base.alt_pkey_index; 1891 } 1892 if (cmd->base.attr_mask & IB_QP_RATE_LIMIT) 1893 attr->rate_limit = cmd->rate_limit; 1894 1895 if (cmd->base.attr_mask & IB_QP_AV) 1896 copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr, 1897 &cmd->base.dest); 1898 1899 if (cmd->base.attr_mask & IB_QP_ALT_PATH) 1900 copy_ah_attr_from_uverbs(qp->device, &attr->alt_ah_attr, 1901 &cmd->base.alt_dest); 1902 1903 ret = ib_modify_qp_with_udata(qp, attr, 1904 modify_qp_mask(qp->qp_type, 1905 cmd->base.attr_mask), 1906 &attrs->driver_udata); 1907 1908 release_qp: 1909 uobj_put_obj_read(qp); 1910 out: 1911 kfree(attr); 1912 1913 return ret; 1914 } 1915 1916 static int ib_uverbs_modify_qp(struct uverbs_attr_bundle *attrs) 1917 { 1918 struct ib_uverbs_ex_modify_qp cmd; 1919 int ret; 1920 1921 ret = uverbs_request(attrs, &cmd.base, sizeof(cmd.base)); 1922 if (ret) 1923 return ret; 1924 1925 if (cmd.base.attr_mask & 1926 ~((IB_USER_LEGACY_LAST_QP_ATTR_MASK << 1) - 1)) 1927 return -EOPNOTSUPP; 1928 1929 return modify_qp(attrs, &cmd); 1930 } 1931 1932 static int ib_uverbs_ex_modify_qp(struct uverbs_attr_bundle *attrs) 1933 { 1934 struct ib_uverbs_ex_modify_qp cmd; 1935 struct ib_uverbs_ex_modify_qp_resp resp = { 1936 .response_length = uverbs_response_length(attrs, sizeof(resp)) 1937 }; 1938 int ret; 1939 1940 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1941 if (ret) 1942 return ret; 1943 1944 /* 1945 * Last bit is reserved for extending the attr_mask by 1946 * using another field. 1947 */ 1948 BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1 << 31)); 1949 1950 if (cmd.base.attr_mask & 1951 ~((IB_USER_LAST_QP_ATTR_MASK << 1) - 1)) 1952 return -EOPNOTSUPP; 1953 1954 ret = modify_qp(attrs, &cmd); 1955 if (ret) 1956 return ret; 1957 1958 return uverbs_response(attrs, &resp, sizeof(resp)); 1959 } 1960 1961 static int ib_uverbs_destroy_qp(struct uverbs_attr_bundle *attrs) 1962 { 1963 struct ib_uverbs_destroy_qp cmd; 1964 struct ib_uverbs_destroy_qp_resp resp; 1965 struct ib_uobject *uobj; 1966 struct ib_uqp_object *obj; 1967 int ret; 1968 1969 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1970 if (ret) 1971 return ret; 1972 1973 uobj = uobj_get_destroy(UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 1974 if (IS_ERR(uobj)) 1975 return PTR_ERR(uobj); 1976 1977 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); 1978 memset(&resp, 0, sizeof(resp)); 1979 resp.events_reported = obj->uevent.events_reported; 1980 1981 uobj_put_destroy(uobj); 1982 1983 return uverbs_response(attrs, &resp, sizeof(resp)); 1984 } 1985 1986 static void *alloc_wr(size_t wr_size, __u32 num_sge) 1987 { 1988 if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof (struct ib_sge))) / 1989 sizeof (struct ib_sge)) 1990 return NULL; 1991 1992 return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) + 1993 num_sge * sizeof (struct ib_sge), GFP_KERNEL); 1994 } 1995 1996 static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs) 1997 { 1998 struct ib_uverbs_post_send cmd; 1999 struct ib_uverbs_post_send_resp resp; 2000 struct ib_uverbs_send_wr *user_wr; 2001 struct ib_send_wr *wr = NULL, *last, *next; 2002 const struct ib_send_wr *bad_wr; 2003 struct ib_qp *qp; 2004 int i, sg_ind; 2005 int is_ud; 2006 int ret, ret2; 2007 size_t next_size; 2008 const struct ib_sge __user *sgls; 2009 const void __user *wqes; 2010 struct uverbs_req_iter iter; 2011 2012 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 2013 if (ret) 2014 return ret; 2015 wqes = uverbs_request_next_ptr(&iter, cmd.wqe_size * cmd.wr_count); 2016 if (IS_ERR(wqes)) 2017 return PTR_ERR(wqes); 2018 sgls = uverbs_request_next_ptr( 2019 &iter, cmd.sge_count * sizeof(struct ib_uverbs_sge)); 2020 if (IS_ERR(sgls)) 2021 return PTR_ERR(sgls); 2022 ret = uverbs_request_finish(&iter); 2023 if (ret) 2024 return ret; 2025 2026 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); 2027 if (!user_wr) 2028 return -ENOMEM; 2029 2030 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2031 if (!qp) { 2032 ret = -EINVAL; 2033 goto out; 2034 } 2035 2036 is_ud = qp->qp_type == IB_QPT_UD; 2037 sg_ind = 0; 2038 last = NULL; 2039 for (i = 0; i < cmd.wr_count; ++i) { 2040 if (copy_from_user(user_wr, wqes + i * cmd.wqe_size, 2041 cmd.wqe_size)) { 2042 ret = -EFAULT; 2043 goto out_put; 2044 } 2045 2046 if (user_wr->num_sge + sg_ind > cmd.sge_count) { 2047 ret = -EINVAL; 2048 goto out_put; 2049 } 2050 2051 if (is_ud) { 2052 struct ib_ud_wr *ud; 2053 2054 if (user_wr->opcode != IB_WR_SEND && 2055 user_wr->opcode != IB_WR_SEND_WITH_IMM) { 2056 ret = -EINVAL; 2057 goto out_put; 2058 } 2059 2060 next_size = sizeof(*ud); 2061 ud = alloc_wr(next_size, user_wr->num_sge); 2062 if (!ud) { 2063 ret = -ENOMEM; 2064 goto out_put; 2065 } 2066 2067 ud->ah = uobj_get_obj_read(ah, UVERBS_OBJECT_AH, 2068 user_wr->wr.ud.ah, attrs); 2069 if (!ud->ah) { 2070 kfree(ud); 2071 ret = -EINVAL; 2072 goto out_put; 2073 } 2074 ud->remote_qpn = user_wr->wr.ud.remote_qpn; 2075 ud->remote_qkey = user_wr->wr.ud.remote_qkey; 2076 2077 next = &ud->wr; 2078 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM || 2079 user_wr->opcode == IB_WR_RDMA_WRITE || 2080 user_wr->opcode == IB_WR_RDMA_READ) { 2081 struct ib_rdma_wr *rdma; 2082 2083 next_size = sizeof(*rdma); 2084 rdma = alloc_wr(next_size, user_wr->num_sge); 2085 if (!rdma) { 2086 ret = -ENOMEM; 2087 goto out_put; 2088 } 2089 2090 rdma->remote_addr = user_wr->wr.rdma.remote_addr; 2091 rdma->rkey = user_wr->wr.rdma.rkey; 2092 2093 next = &rdma->wr; 2094 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP || 2095 user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) { 2096 struct ib_atomic_wr *atomic; 2097 2098 next_size = sizeof(*atomic); 2099 atomic = alloc_wr(next_size, user_wr->num_sge); 2100 if (!atomic) { 2101 ret = -ENOMEM; 2102 goto out_put; 2103 } 2104 2105 atomic->remote_addr = user_wr->wr.atomic.remote_addr; 2106 atomic->compare_add = user_wr->wr.atomic.compare_add; 2107 atomic->swap = user_wr->wr.atomic.swap; 2108 atomic->rkey = user_wr->wr.atomic.rkey; 2109 2110 next = &atomic->wr; 2111 } else if (user_wr->opcode == IB_WR_SEND || 2112 user_wr->opcode == IB_WR_SEND_WITH_IMM || 2113 user_wr->opcode == IB_WR_SEND_WITH_INV) { 2114 next_size = sizeof(*next); 2115 next = alloc_wr(next_size, user_wr->num_sge); 2116 if (!next) { 2117 ret = -ENOMEM; 2118 goto out_put; 2119 } 2120 } else { 2121 ret = -EINVAL; 2122 goto out_put; 2123 } 2124 2125 if (user_wr->opcode == IB_WR_SEND_WITH_IMM || 2126 user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) { 2127 next->ex.imm_data = 2128 (__be32 __force) user_wr->ex.imm_data; 2129 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) { 2130 next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey; 2131 } 2132 2133 if (!last) 2134 wr = next; 2135 else 2136 last->next = next; 2137 last = next; 2138 2139 next->next = NULL; 2140 next->wr_id = user_wr->wr_id; 2141 next->num_sge = user_wr->num_sge; 2142 next->opcode = user_wr->opcode; 2143 next->send_flags = user_wr->send_flags; 2144 2145 if (next->num_sge) { 2146 next->sg_list = (void *) next + 2147 ALIGN(next_size, sizeof(struct ib_sge)); 2148 if (copy_from_user(next->sg_list, sgls + sg_ind, 2149 next->num_sge * 2150 sizeof(struct ib_sge))) { 2151 ret = -EFAULT; 2152 goto out_put; 2153 } 2154 sg_ind += next->num_sge; 2155 } else 2156 next->sg_list = NULL; 2157 } 2158 2159 resp.bad_wr = 0; 2160 ret = qp->device->ops.post_send(qp->real_qp, wr, &bad_wr); 2161 if (ret) 2162 for (next = wr; next; next = next->next) { 2163 ++resp.bad_wr; 2164 if (next == bad_wr) 2165 break; 2166 } 2167 2168 ret2 = uverbs_response(attrs, &resp, sizeof(resp)); 2169 if (ret2) 2170 ret = ret2; 2171 2172 out_put: 2173 uobj_put_obj_read(qp); 2174 2175 while (wr) { 2176 if (is_ud && ud_wr(wr)->ah) 2177 uobj_put_obj_read(ud_wr(wr)->ah); 2178 next = wr->next; 2179 kfree(wr); 2180 wr = next; 2181 } 2182 2183 out: 2184 kfree(user_wr); 2185 2186 return ret; 2187 } 2188 2189 static struct ib_recv_wr * 2190 ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count, 2191 u32 wqe_size, u32 sge_count) 2192 { 2193 struct ib_uverbs_recv_wr *user_wr; 2194 struct ib_recv_wr *wr = NULL, *last, *next; 2195 int sg_ind; 2196 int i; 2197 int ret; 2198 const struct ib_sge __user *sgls; 2199 const void __user *wqes; 2200 2201 if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) 2202 return ERR_PTR(-EINVAL); 2203 2204 wqes = uverbs_request_next_ptr(iter, wqe_size * wr_count); 2205 if (IS_ERR(wqes)) 2206 return ERR_CAST(wqes); 2207 sgls = uverbs_request_next_ptr( 2208 iter, sge_count * sizeof(struct ib_uverbs_sge)); 2209 if (IS_ERR(sgls)) 2210 return ERR_CAST(sgls); 2211 ret = uverbs_request_finish(iter); 2212 if (ret) 2213 return ERR_PTR(ret); 2214 2215 user_wr = kmalloc(wqe_size, GFP_KERNEL); 2216 if (!user_wr) 2217 return ERR_PTR(-ENOMEM); 2218 2219 sg_ind = 0; 2220 last = NULL; 2221 for (i = 0; i < wr_count; ++i) { 2222 if (copy_from_user(user_wr, wqes + i * wqe_size, 2223 wqe_size)) { 2224 ret = -EFAULT; 2225 goto err; 2226 } 2227 2228 if (user_wr->num_sge + sg_ind > sge_count) { 2229 ret = -EINVAL; 2230 goto err; 2231 } 2232 2233 if (user_wr->num_sge >= 2234 (U32_MAX - ALIGN(sizeof *next, sizeof (struct ib_sge))) / 2235 sizeof (struct ib_sge)) { 2236 ret = -EINVAL; 2237 goto err; 2238 } 2239 2240 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + 2241 user_wr->num_sge * sizeof (struct ib_sge), 2242 GFP_KERNEL); 2243 if (!next) { 2244 ret = -ENOMEM; 2245 goto err; 2246 } 2247 2248 if (!last) 2249 wr = next; 2250 else 2251 last->next = next; 2252 last = next; 2253 2254 next->next = NULL; 2255 next->wr_id = user_wr->wr_id; 2256 next->num_sge = user_wr->num_sge; 2257 2258 if (next->num_sge) { 2259 next->sg_list = (void *) next + 2260 ALIGN(sizeof *next, sizeof (struct ib_sge)); 2261 if (copy_from_user(next->sg_list, sgls + sg_ind, 2262 next->num_sge * 2263 sizeof(struct ib_sge))) { 2264 ret = -EFAULT; 2265 goto err; 2266 } 2267 sg_ind += next->num_sge; 2268 } else 2269 next->sg_list = NULL; 2270 } 2271 2272 kfree(user_wr); 2273 return wr; 2274 2275 err: 2276 kfree(user_wr); 2277 2278 while (wr) { 2279 next = wr->next; 2280 kfree(wr); 2281 wr = next; 2282 } 2283 2284 return ERR_PTR(ret); 2285 } 2286 2287 static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs) 2288 { 2289 struct ib_uverbs_post_recv cmd; 2290 struct ib_uverbs_post_recv_resp resp; 2291 struct ib_recv_wr *wr, *next; 2292 const struct ib_recv_wr *bad_wr; 2293 struct ib_qp *qp; 2294 int ret, ret2; 2295 struct uverbs_req_iter iter; 2296 2297 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 2298 if (ret) 2299 return ret; 2300 2301 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size, 2302 cmd.sge_count); 2303 if (IS_ERR(wr)) 2304 return PTR_ERR(wr); 2305 2306 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2307 if (!qp) { 2308 ret = -EINVAL; 2309 goto out; 2310 } 2311 2312 resp.bad_wr = 0; 2313 ret = qp->device->ops.post_recv(qp->real_qp, wr, &bad_wr); 2314 2315 uobj_put_obj_read(qp); 2316 if (ret) { 2317 for (next = wr; next; next = next->next) { 2318 ++resp.bad_wr; 2319 if (next == bad_wr) 2320 break; 2321 } 2322 } 2323 2324 ret2 = uverbs_response(attrs, &resp, sizeof(resp)); 2325 if (ret2) 2326 ret = ret2; 2327 out: 2328 while (wr) { 2329 next = wr->next; 2330 kfree(wr); 2331 wr = next; 2332 } 2333 2334 return ret; 2335 } 2336 2337 static int ib_uverbs_post_srq_recv(struct uverbs_attr_bundle *attrs) 2338 { 2339 struct ib_uverbs_post_srq_recv cmd; 2340 struct ib_uverbs_post_srq_recv_resp resp; 2341 struct ib_recv_wr *wr, *next; 2342 const struct ib_recv_wr *bad_wr; 2343 struct ib_srq *srq; 2344 int ret, ret2; 2345 struct uverbs_req_iter iter; 2346 2347 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 2348 if (ret) 2349 return ret; 2350 2351 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size, 2352 cmd.sge_count); 2353 if (IS_ERR(wr)) 2354 return PTR_ERR(wr); 2355 2356 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 2357 if (!srq) { 2358 ret = -EINVAL; 2359 goto out; 2360 } 2361 2362 resp.bad_wr = 0; 2363 ret = srq->device->ops.post_srq_recv(srq, wr, &bad_wr); 2364 2365 uobj_put_obj_read(srq); 2366 2367 if (ret) 2368 for (next = wr; next; next = next->next) { 2369 ++resp.bad_wr; 2370 if (next == bad_wr) 2371 break; 2372 } 2373 2374 ret2 = uverbs_response(attrs, &resp, sizeof(resp)); 2375 if (ret2) 2376 ret = ret2; 2377 2378 out: 2379 while (wr) { 2380 next = wr->next; 2381 kfree(wr); 2382 wr = next; 2383 } 2384 2385 return ret; 2386 } 2387 2388 static int ib_uverbs_create_ah(struct uverbs_attr_bundle *attrs) 2389 { 2390 struct ib_uverbs_create_ah cmd; 2391 struct ib_uverbs_create_ah_resp resp; 2392 struct ib_uobject *uobj; 2393 struct ib_pd *pd; 2394 struct ib_ah *ah; 2395 struct rdma_ah_attr attr = {}; 2396 int ret; 2397 struct ib_device *ib_dev; 2398 2399 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2400 if (ret) 2401 return ret; 2402 2403 uobj = uobj_alloc(UVERBS_OBJECT_AH, attrs, &ib_dev); 2404 if (IS_ERR(uobj)) 2405 return PTR_ERR(uobj); 2406 2407 if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num)) { 2408 ret = -EINVAL; 2409 goto err; 2410 } 2411 2412 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 2413 if (!pd) { 2414 ret = -EINVAL; 2415 goto err; 2416 } 2417 2418 attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num); 2419 rdma_ah_set_make_grd(&attr, false); 2420 rdma_ah_set_dlid(&attr, cmd.attr.dlid); 2421 rdma_ah_set_sl(&attr, cmd.attr.sl); 2422 rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits); 2423 rdma_ah_set_static_rate(&attr, cmd.attr.static_rate); 2424 rdma_ah_set_port_num(&attr, cmd.attr.port_num); 2425 2426 if (cmd.attr.is_global) { 2427 rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label, 2428 cmd.attr.grh.sgid_index, 2429 cmd.attr.grh.hop_limit, 2430 cmd.attr.grh.traffic_class); 2431 rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid); 2432 } else { 2433 rdma_ah_set_ah_flags(&attr, 0); 2434 } 2435 2436 ah = rdma_create_user_ah(pd, &attr, &attrs->driver_udata); 2437 if (IS_ERR(ah)) { 2438 ret = PTR_ERR(ah); 2439 goto err_put; 2440 } 2441 2442 ah->uobject = uobj; 2443 uobj->user_handle = cmd.user_handle; 2444 uobj->object = ah; 2445 2446 resp.ah_handle = uobj->id; 2447 2448 ret = uverbs_response(attrs, &resp, sizeof(resp)); 2449 if (ret) 2450 goto err_copy; 2451 2452 uobj_put_obj_read(pd); 2453 return uobj_alloc_commit(uobj, attrs); 2454 2455 err_copy: 2456 rdma_destroy_ah(ah, RDMA_DESTROY_AH_SLEEPABLE); 2457 2458 err_put: 2459 uobj_put_obj_read(pd); 2460 2461 err: 2462 uobj_alloc_abort(uobj, attrs); 2463 return ret; 2464 } 2465 2466 static int ib_uverbs_destroy_ah(struct uverbs_attr_bundle *attrs) 2467 { 2468 struct ib_uverbs_destroy_ah cmd; 2469 int ret; 2470 2471 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2472 if (ret) 2473 return ret; 2474 2475 return uobj_perform_destroy(UVERBS_OBJECT_AH, cmd.ah_handle, attrs); 2476 } 2477 2478 static int ib_uverbs_attach_mcast(struct uverbs_attr_bundle *attrs) 2479 { 2480 struct ib_uverbs_attach_mcast cmd; 2481 struct ib_qp *qp; 2482 struct ib_uqp_object *obj; 2483 struct ib_uverbs_mcast_entry *mcast; 2484 int ret; 2485 2486 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2487 if (ret) 2488 return ret; 2489 2490 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2491 if (!qp) 2492 return -EINVAL; 2493 2494 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); 2495 2496 mutex_lock(&obj->mcast_lock); 2497 list_for_each_entry(mcast, &obj->mcast_list, list) 2498 if (cmd.mlid == mcast->lid && 2499 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { 2500 ret = 0; 2501 goto out_put; 2502 } 2503 2504 mcast = kmalloc(sizeof *mcast, GFP_KERNEL); 2505 if (!mcast) { 2506 ret = -ENOMEM; 2507 goto out_put; 2508 } 2509 2510 mcast->lid = cmd.mlid; 2511 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); 2512 2513 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); 2514 if (!ret) 2515 list_add_tail(&mcast->list, &obj->mcast_list); 2516 else 2517 kfree(mcast); 2518 2519 out_put: 2520 mutex_unlock(&obj->mcast_lock); 2521 uobj_put_obj_read(qp); 2522 2523 return ret; 2524 } 2525 2526 static int ib_uverbs_detach_mcast(struct uverbs_attr_bundle *attrs) 2527 { 2528 struct ib_uverbs_detach_mcast cmd; 2529 struct ib_uqp_object *obj; 2530 struct ib_qp *qp; 2531 struct ib_uverbs_mcast_entry *mcast; 2532 int ret = -EINVAL; 2533 bool found = false; 2534 2535 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2536 if (ret) 2537 return ret; 2538 2539 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2540 if (!qp) 2541 return -EINVAL; 2542 2543 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); 2544 mutex_lock(&obj->mcast_lock); 2545 2546 list_for_each_entry(mcast, &obj->mcast_list, list) 2547 if (cmd.mlid == mcast->lid && 2548 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { 2549 list_del(&mcast->list); 2550 kfree(mcast); 2551 found = true; 2552 break; 2553 } 2554 2555 if (!found) { 2556 ret = -EINVAL; 2557 goto out_put; 2558 } 2559 2560 ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid); 2561 2562 out_put: 2563 mutex_unlock(&obj->mcast_lock); 2564 uobj_put_obj_read(qp); 2565 return ret; 2566 } 2567 2568 struct ib_uflow_resources *flow_resources_alloc(size_t num_specs) 2569 { 2570 struct ib_uflow_resources *resources; 2571 2572 resources = kzalloc(sizeof(*resources), GFP_KERNEL); 2573 2574 if (!resources) 2575 return NULL; 2576 2577 if (!num_specs) 2578 goto out; 2579 2580 resources->counters = 2581 kcalloc(num_specs, sizeof(*resources->counters), GFP_KERNEL); 2582 resources->collection = 2583 kcalloc(num_specs, sizeof(*resources->collection), GFP_KERNEL); 2584 2585 if (!resources->counters || !resources->collection) 2586 goto err; 2587 2588 out: 2589 resources->max = num_specs; 2590 return resources; 2591 2592 err: 2593 kfree(resources->counters); 2594 kfree(resources); 2595 2596 return NULL; 2597 } 2598 EXPORT_SYMBOL(flow_resources_alloc); 2599 2600 void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res) 2601 { 2602 unsigned int i; 2603 2604 if (!uflow_res) 2605 return; 2606 2607 for (i = 0; i < uflow_res->collection_num; i++) 2608 atomic_dec(&uflow_res->collection[i]->usecnt); 2609 2610 for (i = 0; i < uflow_res->counters_num; i++) 2611 atomic_dec(&uflow_res->counters[i]->usecnt); 2612 2613 kfree(uflow_res->collection); 2614 kfree(uflow_res->counters); 2615 kfree(uflow_res); 2616 } 2617 EXPORT_SYMBOL(ib_uverbs_flow_resources_free); 2618 2619 void flow_resources_add(struct ib_uflow_resources *uflow_res, 2620 enum ib_flow_spec_type type, 2621 void *ibobj) 2622 { 2623 WARN_ON(uflow_res->num >= uflow_res->max); 2624 2625 switch (type) { 2626 case IB_FLOW_SPEC_ACTION_HANDLE: 2627 atomic_inc(&((struct ib_flow_action *)ibobj)->usecnt); 2628 uflow_res->collection[uflow_res->collection_num++] = 2629 (struct ib_flow_action *)ibobj; 2630 break; 2631 case IB_FLOW_SPEC_ACTION_COUNT: 2632 atomic_inc(&((struct ib_counters *)ibobj)->usecnt); 2633 uflow_res->counters[uflow_res->counters_num++] = 2634 (struct ib_counters *)ibobj; 2635 break; 2636 default: 2637 WARN_ON(1); 2638 } 2639 2640 uflow_res->num++; 2641 } 2642 EXPORT_SYMBOL(flow_resources_add); 2643 2644 static int kern_spec_to_ib_spec_action(struct uverbs_attr_bundle *attrs, 2645 struct ib_uverbs_flow_spec *kern_spec, 2646 union ib_flow_spec *ib_spec, 2647 struct ib_uflow_resources *uflow_res) 2648 { 2649 ib_spec->type = kern_spec->type; 2650 switch (ib_spec->type) { 2651 case IB_FLOW_SPEC_ACTION_TAG: 2652 if (kern_spec->flow_tag.size != 2653 sizeof(struct ib_uverbs_flow_spec_action_tag)) 2654 return -EINVAL; 2655 2656 ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag); 2657 ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id; 2658 break; 2659 case IB_FLOW_SPEC_ACTION_DROP: 2660 if (kern_spec->drop.size != 2661 sizeof(struct ib_uverbs_flow_spec_action_drop)) 2662 return -EINVAL; 2663 2664 ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop); 2665 break; 2666 case IB_FLOW_SPEC_ACTION_HANDLE: 2667 if (kern_spec->action.size != 2668 sizeof(struct ib_uverbs_flow_spec_action_handle)) 2669 return -EOPNOTSUPP; 2670 ib_spec->action.act = uobj_get_obj_read(flow_action, 2671 UVERBS_OBJECT_FLOW_ACTION, 2672 kern_spec->action.handle, 2673 attrs); 2674 if (!ib_spec->action.act) 2675 return -EINVAL; 2676 ib_spec->action.size = 2677 sizeof(struct ib_flow_spec_action_handle); 2678 flow_resources_add(uflow_res, 2679 IB_FLOW_SPEC_ACTION_HANDLE, 2680 ib_spec->action.act); 2681 uobj_put_obj_read(ib_spec->action.act); 2682 break; 2683 case IB_FLOW_SPEC_ACTION_COUNT: 2684 if (kern_spec->flow_count.size != 2685 sizeof(struct ib_uverbs_flow_spec_action_count)) 2686 return -EINVAL; 2687 ib_spec->flow_count.counters = 2688 uobj_get_obj_read(counters, 2689 UVERBS_OBJECT_COUNTERS, 2690 kern_spec->flow_count.handle, 2691 attrs); 2692 if (!ib_spec->flow_count.counters) 2693 return -EINVAL; 2694 ib_spec->flow_count.size = 2695 sizeof(struct ib_flow_spec_action_count); 2696 flow_resources_add(uflow_res, 2697 IB_FLOW_SPEC_ACTION_COUNT, 2698 ib_spec->flow_count.counters); 2699 uobj_put_obj_read(ib_spec->flow_count.counters); 2700 break; 2701 default: 2702 return -EINVAL; 2703 } 2704 return 0; 2705 } 2706 2707 static size_t kern_spec_filter_sz(const struct ib_uverbs_flow_spec_hdr *spec) 2708 { 2709 /* Returns user space filter size, includes padding */ 2710 return (spec->size - sizeof(struct ib_uverbs_flow_spec_hdr)) / 2; 2711 } 2712 2713 static ssize_t spec_filter_size(const void *kern_spec_filter, u16 kern_filter_size, 2714 u16 ib_real_filter_sz) 2715 { 2716 /* 2717 * User space filter structures must be 64 bit aligned, otherwise this 2718 * may pass, but we won't handle additional new attributes. 2719 */ 2720 2721 if (kern_filter_size > ib_real_filter_sz) { 2722 if (memchr_inv(kern_spec_filter + 2723 ib_real_filter_sz, 0, 2724 kern_filter_size - ib_real_filter_sz)) 2725 return -EINVAL; 2726 return ib_real_filter_sz; 2727 } 2728 return kern_filter_size; 2729 } 2730 2731 int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type, 2732 const void *kern_spec_mask, 2733 const void *kern_spec_val, 2734 size_t kern_filter_sz, 2735 union ib_flow_spec *ib_spec) 2736 { 2737 ssize_t actual_filter_sz; 2738 ssize_t ib_filter_sz; 2739 2740 /* User flow spec size must be aligned to 4 bytes */ 2741 if (kern_filter_sz != ALIGN(kern_filter_sz, 4)) 2742 return -EINVAL; 2743 2744 ib_spec->type = type; 2745 2746 if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL)) 2747 return -EINVAL; 2748 2749 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) { 2750 case IB_FLOW_SPEC_ETH: 2751 ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz); 2752 actual_filter_sz = spec_filter_size(kern_spec_mask, 2753 kern_filter_sz, 2754 ib_filter_sz); 2755 if (actual_filter_sz <= 0) 2756 return -EINVAL; 2757 ib_spec->size = sizeof(struct ib_flow_spec_eth); 2758 memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz); 2759 memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz); 2760 break; 2761 case IB_FLOW_SPEC_IPV4: 2762 ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz); 2763 actual_filter_sz = spec_filter_size(kern_spec_mask, 2764 kern_filter_sz, 2765 ib_filter_sz); 2766 if (actual_filter_sz <= 0) 2767 return -EINVAL; 2768 ib_spec->size = sizeof(struct ib_flow_spec_ipv4); 2769 memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz); 2770 memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz); 2771 break; 2772 case IB_FLOW_SPEC_IPV6: 2773 ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz); 2774 actual_filter_sz = spec_filter_size(kern_spec_mask, 2775 kern_filter_sz, 2776 ib_filter_sz); 2777 if (actual_filter_sz <= 0) 2778 return -EINVAL; 2779 ib_spec->size = sizeof(struct ib_flow_spec_ipv6); 2780 memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz); 2781 memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz); 2782 2783 if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) || 2784 (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20)) 2785 return -EINVAL; 2786 break; 2787 case IB_FLOW_SPEC_TCP: 2788 case IB_FLOW_SPEC_UDP: 2789 ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz); 2790 actual_filter_sz = spec_filter_size(kern_spec_mask, 2791 kern_filter_sz, 2792 ib_filter_sz); 2793 if (actual_filter_sz <= 0) 2794 return -EINVAL; 2795 ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp); 2796 memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz); 2797 memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz); 2798 break; 2799 case IB_FLOW_SPEC_VXLAN_TUNNEL: 2800 ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz); 2801 actual_filter_sz = spec_filter_size(kern_spec_mask, 2802 kern_filter_sz, 2803 ib_filter_sz); 2804 if (actual_filter_sz <= 0) 2805 return -EINVAL; 2806 ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel); 2807 memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz); 2808 memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz); 2809 2810 if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) || 2811 (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24)) 2812 return -EINVAL; 2813 break; 2814 case IB_FLOW_SPEC_ESP: 2815 ib_filter_sz = offsetof(struct ib_flow_esp_filter, real_sz); 2816 actual_filter_sz = spec_filter_size(kern_spec_mask, 2817 kern_filter_sz, 2818 ib_filter_sz); 2819 if (actual_filter_sz <= 0) 2820 return -EINVAL; 2821 ib_spec->esp.size = sizeof(struct ib_flow_spec_esp); 2822 memcpy(&ib_spec->esp.val, kern_spec_val, actual_filter_sz); 2823 memcpy(&ib_spec->esp.mask, kern_spec_mask, actual_filter_sz); 2824 break; 2825 case IB_FLOW_SPEC_GRE: 2826 ib_filter_sz = offsetof(struct ib_flow_gre_filter, real_sz); 2827 actual_filter_sz = spec_filter_size(kern_spec_mask, 2828 kern_filter_sz, 2829 ib_filter_sz); 2830 if (actual_filter_sz <= 0) 2831 return -EINVAL; 2832 ib_spec->gre.size = sizeof(struct ib_flow_spec_gre); 2833 memcpy(&ib_spec->gre.val, kern_spec_val, actual_filter_sz); 2834 memcpy(&ib_spec->gre.mask, kern_spec_mask, actual_filter_sz); 2835 break; 2836 case IB_FLOW_SPEC_MPLS: 2837 ib_filter_sz = offsetof(struct ib_flow_mpls_filter, real_sz); 2838 actual_filter_sz = spec_filter_size(kern_spec_mask, 2839 kern_filter_sz, 2840 ib_filter_sz); 2841 if (actual_filter_sz <= 0) 2842 return -EINVAL; 2843 ib_spec->mpls.size = sizeof(struct ib_flow_spec_mpls); 2844 memcpy(&ib_spec->mpls.val, kern_spec_val, actual_filter_sz); 2845 memcpy(&ib_spec->mpls.mask, kern_spec_mask, actual_filter_sz); 2846 break; 2847 default: 2848 return -EINVAL; 2849 } 2850 return 0; 2851 } 2852 2853 static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec, 2854 union ib_flow_spec *ib_spec) 2855 { 2856 ssize_t kern_filter_sz; 2857 void *kern_spec_mask; 2858 void *kern_spec_val; 2859 2860 kern_filter_sz = kern_spec_filter_sz(&kern_spec->hdr); 2861 2862 kern_spec_val = (void *)kern_spec + 2863 sizeof(struct ib_uverbs_flow_spec_hdr); 2864 kern_spec_mask = kern_spec_val + kern_filter_sz; 2865 2866 return ib_uverbs_kern_spec_to_ib_spec_filter(kern_spec->type, 2867 kern_spec_mask, 2868 kern_spec_val, 2869 kern_filter_sz, ib_spec); 2870 } 2871 2872 static int kern_spec_to_ib_spec(struct uverbs_attr_bundle *attrs, 2873 struct ib_uverbs_flow_spec *kern_spec, 2874 union ib_flow_spec *ib_spec, 2875 struct ib_uflow_resources *uflow_res) 2876 { 2877 if (kern_spec->reserved) 2878 return -EINVAL; 2879 2880 if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG) 2881 return kern_spec_to_ib_spec_action(attrs, kern_spec, ib_spec, 2882 uflow_res); 2883 else 2884 return kern_spec_to_ib_spec_filter(kern_spec, ib_spec); 2885 } 2886 2887 static int ib_uverbs_ex_create_wq(struct uverbs_attr_bundle *attrs) 2888 { 2889 struct ib_uverbs_ex_create_wq cmd; 2890 struct ib_uverbs_ex_create_wq_resp resp = {}; 2891 struct ib_uwq_object *obj; 2892 int err = 0; 2893 struct ib_cq *cq; 2894 struct ib_pd *pd; 2895 struct ib_wq *wq; 2896 struct ib_wq_init_attr wq_init_attr = {}; 2897 struct ib_device *ib_dev; 2898 2899 err = uverbs_request(attrs, &cmd, sizeof(cmd)); 2900 if (err) 2901 return err; 2902 2903 if (cmd.comp_mask) 2904 return -EOPNOTSUPP; 2905 2906 obj = (struct ib_uwq_object *)uobj_alloc(UVERBS_OBJECT_WQ, attrs, 2907 &ib_dev); 2908 if (IS_ERR(obj)) 2909 return PTR_ERR(obj); 2910 2911 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 2912 if (!pd) { 2913 err = -EINVAL; 2914 goto err_uobj; 2915 } 2916 2917 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 2918 if (!cq) { 2919 err = -EINVAL; 2920 goto err_put_pd; 2921 } 2922 2923 wq_init_attr.cq = cq; 2924 wq_init_attr.max_sge = cmd.max_sge; 2925 wq_init_attr.max_wr = cmd.max_wr; 2926 wq_init_attr.wq_context = attrs->ufile; 2927 wq_init_attr.wq_type = cmd.wq_type; 2928 wq_init_attr.event_handler = ib_uverbs_wq_event_handler; 2929 wq_init_attr.create_flags = cmd.create_flags; 2930 obj->uevent.events_reported = 0; 2931 INIT_LIST_HEAD(&obj->uevent.event_list); 2932 2933 wq = pd->device->ops.create_wq(pd, &wq_init_attr, &attrs->driver_udata); 2934 if (IS_ERR(wq)) { 2935 err = PTR_ERR(wq); 2936 goto err_put_cq; 2937 } 2938 2939 wq->uobject = &obj->uevent.uobject; 2940 obj->uevent.uobject.object = wq; 2941 wq->wq_type = wq_init_attr.wq_type; 2942 wq->cq = cq; 2943 wq->pd = pd; 2944 wq->device = pd->device; 2945 wq->wq_context = wq_init_attr.wq_context; 2946 atomic_set(&wq->usecnt, 0); 2947 atomic_inc(&pd->usecnt); 2948 atomic_inc(&cq->usecnt); 2949 wq->uobject = &obj->uevent.uobject; 2950 obj->uevent.uobject.object = wq; 2951 2952 memset(&resp, 0, sizeof(resp)); 2953 resp.wq_handle = obj->uevent.uobject.id; 2954 resp.max_sge = wq_init_attr.max_sge; 2955 resp.max_wr = wq_init_attr.max_wr; 2956 resp.wqn = wq->wq_num; 2957 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 2958 err = uverbs_response(attrs, &resp, sizeof(resp)); 2959 if (err) 2960 goto err_copy; 2961 2962 uobj_put_obj_read(pd); 2963 uobj_put_obj_read(cq); 2964 return uobj_alloc_commit(&obj->uevent.uobject, attrs); 2965 2966 err_copy: 2967 ib_destroy_wq(wq, &attrs->driver_udata); 2968 err_put_cq: 2969 uobj_put_obj_read(cq); 2970 err_put_pd: 2971 uobj_put_obj_read(pd); 2972 err_uobj: 2973 uobj_alloc_abort(&obj->uevent.uobject, attrs); 2974 2975 return err; 2976 } 2977 2978 static int ib_uverbs_ex_destroy_wq(struct uverbs_attr_bundle *attrs) 2979 { 2980 struct ib_uverbs_ex_destroy_wq cmd; 2981 struct ib_uverbs_ex_destroy_wq_resp resp = {}; 2982 struct ib_uobject *uobj; 2983 struct ib_uwq_object *obj; 2984 int ret; 2985 2986 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2987 if (ret) 2988 return ret; 2989 2990 if (cmd.comp_mask) 2991 return -EOPNOTSUPP; 2992 2993 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 2994 uobj = uobj_get_destroy(UVERBS_OBJECT_WQ, cmd.wq_handle, attrs); 2995 if (IS_ERR(uobj)) 2996 return PTR_ERR(uobj); 2997 2998 obj = container_of(uobj, struct ib_uwq_object, uevent.uobject); 2999 resp.events_reported = obj->uevent.events_reported; 3000 3001 uobj_put_destroy(uobj); 3002 3003 return uverbs_response(attrs, &resp, sizeof(resp)); 3004 } 3005 3006 static int ib_uverbs_ex_modify_wq(struct uverbs_attr_bundle *attrs) 3007 { 3008 struct ib_uverbs_ex_modify_wq cmd; 3009 struct ib_wq *wq; 3010 struct ib_wq_attr wq_attr = {}; 3011 int ret; 3012 3013 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3014 if (ret) 3015 return ret; 3016 3017 if (!cmd.attr_mask) 3018 return -EINVAL; 3019 3020 if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS)) 3021 return -EINVAL; 3022 3023 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, cmd.wq_handle, attrs); 3024 if (!wq) 3025 return -EINVAL; 3026 3027 wq_attr.curr_wq_state = cmd.curr_wq_state; 3028 wq_attr.wq_state = cmd.wq_state; 3029 if (cmd.attr_mask & IB_WQ_FLAGS) { 3030 wq_attr.flags = cmd.flags; 3031 wq_attr.flags_mask = cmd.flags_mask; 3032 } 3033 ret = wq->device->ops.modify_wq(wq, &wq_attr, cmd.attr_mask, 3034 &attrs->driver_udata); 3035 uobj_put_obj_read(wq); 3036 return ret; 3037 } 3038 3039 static int ib_uverbs_ex_create_rwq_ind_table(struct uverbs_attr_bundle *attrs) 3040 { 3041 struct ib_uverbs_ex_create_rwq_ind_table cmd; 3042 struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {}; 3043 struct ib_uobject *uobj; 3044 int err; 3045 struct ib_rwq_ind_table_init_attr init_attr = {}; 3046 struct ib_rwq_ind_table *rwq_ind_tbl; 3047 struct ib_wq **wqs = NULL; 3048 u32 *wqs_handles = NULL; 3049 struct ib_wq *wq = NULL; 3050 int i, j, num_read_wqs; 3051 u32 num_wq_handles; 3052 struct uverbs_req_iter iter; 3053 struct ib_device *ib_dev; 3054 3055 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 3056 if (err) 3057 return err; 3058 3059 if (cmd.comp_mask) 3060 return -EOPNOTSUPP; 3061 3062 if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE) 3063 return -EINVAL; 3064 3065 num_wq_handles = 1 << cmd.log_ind_tbl_size; 3066 wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles), 3067 GFP_KERNEL); 3068 if (!wqs_handles) 3069 return -ENOMEM; 3070 3071 err = uverbs_request_next(&iter, wqs_handles, 3072 num_wq_handles * sizeof(__u32)); 3073 if (err) 3074 goto err_free; 3075 3076 err = uverbs_request_finish(&iter); 3077 if (err) 3078 goto err_free; 3079 3080 wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL); 3081 if (!wqs) { 3082 err = -ENOMEM; 3083 goto err_free; 3084 } 3085 3086 for (num_read_wqs = 0; num_read_wqs < num_wq_handles; 3087 num_read_wqs++) { 3088 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, 3089 wqs_handles[num_read_wqs], attrs); 3090 if (!wq) { 3091 err = -EINVAL; 3092 goto put_wqs; 3093 } 3094 3095 wqs[num_read_wqs] = wq; 3096 } 3097 3098 uobj = uobj_alloc(UVERBS_OBJECT_RWQ_IND_TBL, attrs, &ib_dev); 3099 if (IS_ERR(uobj)) { 3100 err = PTR_ERR(uobj); 3101 goto put_wqs; 3102 } 3103 3104 init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size; 3105 init_attr.ind_tbl = wqs; 3106 3107 rwq_ind_tbl = ib_dev->ops.create_rwq_ind_table(ib_dev, &init_attr, 3108 &attrs->driver_udata); 3109 3110 if (IS_ERR(rwq_ind_tbl)) { 3111 err = PTR_ERR(rwq_ind_tbl); 3112 goto err_uobj; 3113 } 3114 3115 rwq_ind_tbl->ind_tbl = wqs; 3116 rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size; 3117 rwq_ind_tbl->uobject = uobj; 3118 uobj->object = rwq_ind_tbl; 3119 rwq_ind_tbl->device = ib_dev; 3120 atomic_set(&rwq_ind_tbl->usecnt, 0); 3121 3122 for (i = 0; i < num_wq_handles; i++) 3123 atomic_inc(&wqs[i]->usecnt); 3124 3125 resp.ind_tbl_handle = uobj->id; 3126 resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num; 3127 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 3128 3129 err = uverbs_response(attrs, &resp, sizeof(resp)); 3130 if (err) 3131 goto err_copy; 3132 3133 kfree(wqs_handles); 3134 3135 for (j = 0; j < num_read_wqs; j++) 3136 uobj_put_obj_read(wqs[j]); 3137 3138 return uobj_alloc_commit(uobj, attrs); 3139 3140 err_copy: 3141 ib_destroy_rwq_ind_table(rwq_ind_tbl); 3142 err_uobj: 3143 uobj_alloc_abort(uobj, attrs); 3144 put_wqs: 3145 for (j = 0; j < num_read_wqs; j++) 3146 uobj_put_obj_read(wqs[j]); 3147 err_free: 3148 kfree(wqs_handles); 3149 kfree(wqs); 3150 return err; 3151 } 3152 3153 static int ib_uverbs_ex_destroy_rwq_ind_table(struct uverbs_attr_bundle *attrs) 3154 { 3155 struct ib_uverbs_ex_destroy_rwq_ind_table cmd; 3156 int ret; 3157 3158 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3159 if (ret) 3160 return ret; 3161 3162 if (cmd.comp_mask) 3163 return -EOPNOTSUPP; 3164 3165 return uobj_perform_destroy(UVERBS_OBJECT_RWQ_IND_TBL, 3166 cmd.ind_tbl_handle, attrs); 3167 } 3168 3169 static int ib_uverbs_ex_create_flow(struct uverbs_attr_bundle *attrs) 3170 { 3171 struct ib_uverbs_create_flow cmd; 3172 struct ib_uverbs_create_flow_resp resp; 3173 struct ib_uobject *uobj; 3174 struct ib_flow *flow_id; 3175 struct ib_uverbs_flow_attr *kern_flow_attr; 3176 struct ib_flow_attr *flow_attr; 3177 struct ib_qp *qp; 3178 struct ib_uflow_resources *uflow_res; 3179 struct ib_uverbs_flow_spec_hdr *kern_spec; 3180 struct uverbs_req_iter iter; 3181 int err; 3182 void *ib_spec; 3183 int i; 3184 struct ib_device *ib_dev; 3185 3186 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 3187 if (err) 3188 return err; 3189 3190 if (cmd.comp_mask) 3191 return -EINVAL; 3192 3193 if (!capable(CAP_NET_RAW)) 3194 return -EPERM; 3195 3196 if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED) 3197 return -EINVAL; 3198 3199 if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) && 3200 ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) || 3201 (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT))) 3202 return -EINVAL; 3203 3204 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS) 3205 return -EINVAL; 3206 3207 if (cmd.flow_attr.size > 3208 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec))) 3209 return -EINVAL; 3210 3211 if (cmd.flow_attr.reserved[0] || 3212 cmd.flow_attr.reserved[1]) 3213 return -EINVAL; 3214 3215 if (cmd.flow_attr.num_of_specs) { 3216 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size, 3217 GFP_KERNEL); 3218 if (!kern_flow_attr) 3219 return -ENOMEM; 3220 3221 *kern_flow_attr = cmd.flow_attr; 3222 err = uverbs_request_next(&iter, &kern_flow_attr->flow_specs, 3223 cmd.flow_attr.size); 3224 if (err) 3225 goto err_free_attr; 3226 } else { 3227 kern_flow_attr = &cmd.flow_attr; 3228 } 3229 3230 err = uverbs_request_finish(&iter); 3231 if (err) 3232 goto err_free_attr; 3233 3234 uobj = uobj_alloc(UVERBS_OBJECT_FLOW, attrs, &ib_dev); 3235 if (IS_ERR(uobj)) { 3236 err = PTR_ERR(uobj); 3237 goto err_free_attr; 3238 } 3239 3240 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 3241 if (!qp) { 3242 err = -EINVAL; 3243 goto err_uobj; 3244 } 3245 3246 if (qp->qp_type != IB_QPT_UD && qp->qp_type != IB_QPT_RAW_PACKET) { 3247 err = -EINVAL; 3248 goto err_put; 3249 } 3250 3251 flow_attr = kzalloc(struct_size(flow_attr, flows, 3252 cmd.flow_attr.num_of_specs), GFP_KERNEL); 3253 if (!flow_attr) { 3254 err = -ENOMEM; 3255 goto err_put; 3256 } 3257 uflow_res = flow_resources_alloc(cmd.flow_attr.num_of_specs); 3258 if (!uflow_res) { 3259 err = -ENOMEM; 3260 goto err_free_flow_attr; 3261 } 3262 3263 flow_attr->type = kern_flow_attr->type; 3264 flow_attr->priority = kern_flow_attr->priority; 3265 flow_attr->num_of_specs = kern_flow_attr->num_of_specs; 3266 flow_attr->port = kern_flow_attr->port; 3267 flow_attr->flags = kern_flow_attr->flags; 3268 flow_attr->size = sizeof(*flow_attr); 3269 3270 kern_spec = kern_flow_attr->flow_specs; 3271 ib_spec = flow_attr + 1; 3272 for (i = 0; i < flow_attr->num_of_specs && 3273 cmd.flow_attr.size >= sizeof(*kern_spec) && 3274 cmd.flow_attr.size >= kern_spec->size; 3275 i++) { 3276 err = kern_spec_to_ib_spec( 3277 attrs, (struct ib_uverbs_flow_spec *)kern_spec, 3278 ib_spec, uflow_res); 3279 if (err) 3280 goto err_free; 3281 3282 flow_attr->size += 3283 ((union ib_flow_spec *) ib_spec)->size; 3284 cmd.flow_attr.size -= kern_spec->size; 3285 kern_spec = ((void *)kern_spec) + kern_spec->size; 3286 ib_spec += ((union ib_flow_spec *) ib_spec)->size; 3287 } 3288 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) { 3289 pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n", 3290 i, cmd.flow_attr.size); 3291 err = -EINVAL; 3292 goto err_free; 3293 } 3294 3295 flow_id = qp->device->ops.create_flow( 3296 qp, flow_attr, IB_FLOW_DOMAIN_USER, &attrs->driver_udata); 3297 3298 if (IS_ERR(flow_id)) { 3299 err = PTR_ERR(flow_id); 3300 goto err_free; 3301 } 3302 3303 ib_set_flow(uobj, flow_id, qp, qp->device, uflow_res); 3304 3305 memset(&resp, 0, sizeof(resp)); 3306 resp.flow_handle = uobj->id; 3307 3308 err = uverbs_response(attrs, &resp, sizeof(resp)); 3309 if (err) 3310 goto err_copy; 3311 3312 uobj_put_obj_read(qp); 3313 kfree(flow_attr); 3314 if (cmd.flow_attr.num_of_specs) 3315 kfree(kern_flow_attr); 3316 return uobj_alloc_commit(uobj, attrs); 3317 err_copy: 3318 if (!qp->device->ops.destroy_flow(flow_id)) 3319 atomic_dec(&qp->usecnt); 3320 err_free: 3321 ib_uverbs_flow_resources_free(uflow_res); 3322 err_free_flow_attr: 3323 kfree(flow_attr); 3324 err_put: 3325 uobj_put_obj_read(qp); 3326 err_uobj: 3327 uobj_alloc_abort(uobj, attrs); 3328 err_free_attr: 3329 if (cmd.flow_attr.num_of_specs) 3330 kfree(kern_flow_attr); 3331 return err; 3332 } 3333 3334 static int ib_uverbs_ex_destroy_flow(struct uverbs_attr_bundle *attrs) 3335 { 3336 struct ib_uverbs_destroy_flow cmd; 3337 int ret; 3338 3339 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3340 if (ret) 3341 return ret; 3342 3343 if (cmd.comp_mask) 3344 return -EINVAL; 3345 3346 return uobj_perform_destroy(UVERBS_OBJECT_FLOW, cmd.flow_handle, attrs); 3347 } 3348 3349 static int __uverbs_create_xsrq(struct uverbs_attr_bundle *attrs, 3350 struct ib_uverbs_create_xsrq *cmd, 3351 struct ib_udata *udata) 3352 { 3353 struct ib_uverbs_create_srq_resp resp; 3354 struct ib_usrq_object *obj; 3355 struct ib_pd *pd; 3356 struct ib_srq *srq; 3357 struct ib_uobject *uninitialized_var(xrcd_uobj); 3358 struct ib_srq_init_attr attr; 3359 int ret; 3360 struct ib_device *ib_dev; 3361 3362 obj = (struct ib_usrq_object *)uobj_alloc(UVERBS_OBJECT_SRQ, attrs, 3363 &ib_dev); 3364 if (IS_ERR(obj)) 3365 return PTR_ERR(obj); 3366 3367 if (cmd->srq_type == IB_SRQT_TM) 3368 attr.ext.tag_matching.max_num_tags = cmd->max_num_tags; 3369 3370 if (cmd->srq_type == IB_SRQT_XRC) { 3371 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->xrcd_handle, 3372 attrs); 3373 if (IS_ERR(xrcd_uobj)) { 3374 ret = -EINVAL; 3375 goto err; 3376 } 3377 3378 attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object; 3379 if (!attr.ext.xrc.xrcd) { 3380 ret = -EINVAL; 3381 goto err_put_xrcd; 3382 } 3383 3384 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); 3385 atomic_inc(&obj->uxrcd->refcnt); 3386 } 3387 3388 if (ib_srq_has_cq(cmd->srq_type)) { 3389 attr.ext.cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, 3390 cmd->cq_handle, attrs); 3391 if (!attr.ext.cq) { 3392 ret = -EINVAL; 3393 goto err_put_xrcd; 3394 } 3395 } 3396 3397 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, attrs); 3398 if (!pd) { 3399 ret = -EINVAL; 3400 goto err_put_cq; 3401 } 3402 3403 attr.event_handler = ib_uverbs_srq_event_handler; 3404 attr.srq_context = attrs->ufile; 3405 attr.srq_type = cmd->srq_type; 3406 attr.attr.max_wr = cmd->max_wr; 3407 attr.attr.max_sge = cmd->max_sge; 3408 attr.attr.srq_limit = cmd->srq_limit; 3409 3410 obj->uevent.events_reported = 0; 3411 INIT_LIST_HEAD(&obj->uevent.event_list); 3412 3413 srq = rdma_zalloc_drv_obj(ib_dev, ib_srq); 3414 if (!srq) { 3415 ret = -ENOMEM; 3416 goto err_put; 3417 } 3418 3419 srq->device = pd->device; 3420 srq->pd = pd; 3421 srq->srq_type = cmd->srq_type; 3422 srq->uobject = &obj->uevent.uobject; 3423 srq->event_handler = attr.event_handler; 3424 srq->srq_context = attr.srq_context; 3425 3426 ret = pd->device->ops.create_srq(srq, &attr, udata); 3427 if (ret) 3428 goto err_free; 3429 3430 if (ib_srq_has_cq(cmd->srq_type)) { 3431 srq->ext.cq = attr.ext.cq; 3432 atomic_inc(&attr.ext.cq->usecnt); 3433 } 3434 3435 if (cmd->srq_type == IB_SRQT_XRC) { 3436 srq->ext.xrc.xrcd = attr.ext.xrc.xrcd; 3437 atomic_inc(&attr.ext.xrc.xrcd->usecnt); 3438 } 3439 3440 atomic_inc(&pd->usecnt); 3441 atomic_set(&srq->usecnt, 0); 3442 3443 obj->uevent.uobject.object = srq; 3444 obj->uevent.uobject.user_handle = cmd->user_handle; 3445 3446 memset(&resp, 0, sizeof resp); 3447 resp.srq_handle = obj->uevent.uobject.id; 3448 resp.max_wr = attr.attr.max_wr; 3449 resp.max_sge = attr.attr.max_sge; 3450 if (cmd->srq_type == IB_SRQT_XRC) 3451 resp.srqn = srq->ext.xrc.srq_num; 3452 3453 ret = uverbs_response(attrs, &resp, sizeof(resp)); 3454 if (ret) 3455 goto err_copy; 3456 3457 if (cmd->srq_type == IB_SRQT_XRC) 3458 uobj_put_read(xrcd_uobj); 3459 3460 if (ib_srq_has_cq(cmd->srq_type)) 3461 uobj_put_obj_read(attr.ext.cq); 3462 3463 uobj_put_obj_read(pd); 3464 return uobj_alloc_commit(&obj->uevent.uobject, attrs); 3465 3466 err_copy: 3467 ib_destroy_srq_user(srq, &attrs->driver_udata); 3468 3469 err_free: 3470 kfree(srq); 3471 err_put: 3472 uobj_put_obj_read(pd); 3473 3474 err_put_cq: 3475 if (ib_srq_has_cq(cmd->srq_type)) 3476 uobj_put_obj_read(attr.ext.cq); 3477 3478 err_put_xrcd: 3479 if (cmd->srq_type == IB_SRQT_XRC) { 3480 atomic_dec(&obj->uxrcd->refcnt); 3481 uobj_put_read(xrcd_uobj); 3482 } 3483 3484 err: 3485 uobj_alloc_abort(&obj->uevent.uobject, attrs); 3486 return ret; 3487 } 3488 3489 static int ib_uverbs_create_srq(struct uverbs_attr_bundle *attrs) 3490 { 3491 struct ib_uverbs_create_srq cmd; 3492 struct ib_uverbs_create_xsrq xcmd; 3493 int ret; 3494 3495 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3496 if (ret) 3497 return ret; 3498 3499 memset(&xcmd, 0, sizeof(xcmd)); 3500 xcmd.response = cmd.response; 3501 xcmd.user_handle = cmd.user_handle; 3502 xcmd.srq_type = IB_SRQT_BASIC; 3503 xcmd.pd_handle = cmd.pd_handle; 3504 xcmd.max_wr = cmd.max_wr; 3505 xcmd.max_sge = cmd.max_sge; 3506 xcmd.srq_limit = cmd.srq_limit; 3507 3508 return __uverbs_create_xsrq(attrs, &xcmd, &attrs->driver_udata); 3509 } 3510 3511 static int ib_uverbs_create_xsrq(struct uverbs_attr_bundle *attrs) 3512 { 3513 struct ib_uverbs_create_xsrq cmd; 3514 int ret; 3515 3516 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3517 if (ret) 3518 return ret; 3519 3520 return __uverbs_create_xsrq(attrs, &cmd, &attrs->driver_udata); 3521 } 3522 3523 static int ib_uverbs_modify_srq(struct uverbs_attr_bundle *attrs) 3524 { 3525 struct ib_uverbs_modify_srq cmd; 3526 struct ib_srq *srq; 3527 struct ib_srq_attr attr; 3528 int ret; 3529 3530 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3531 if (ret) 3532 return ret; 3533 3534 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 3535 if (!srq) 3536 return -EINVAL; 3537 3538 attr.max_wr = cmd.max_wr; 3539 attr.srq_limit = cmd.srq_limit; 3540 3541 ret = srq->device->ops.modify_srq(srq, &attr, cmd.attr_mask, 3542 &attrs->driver_udata); 3543 3544 uobj_put_obj_read(srq); 3545 3546 return ret; 3547 } 3548 3549 static int ib_uverbs_query_srq(struct uverbs_attr_bundle *attrs) 3550 { 3551 struct ib_uverbs_query_srq cmd; 3552 struct ib_uverbs_query_srq_resp resp; 3553 struct ib_srq_attr attr; 3554 struct ib_srq *srq; 3555 int ret; 3556 3557 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3558 if (ret) 3559 return ret; 3560 3561 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 3562 if (!srq) 3563 return -EINVAL; 3564 3565 ret = ib_query_srq(srq, &attr); 3566 3567 uobj_put_obj_read(srq); 3568 3569 if (ret) 3570 return ret; 3571 3572 memset(&resp, 0, sizeof resp); 3573 3574 resp.max_wr = attr.max_wr; 3575 resp.max_sge = attr.max_sge; 3576 resp.srq_limit = attr.srq_limit; 3577 3578 return uverbs_response(attrs, &resp, sizeof(resp)); 3579 } 3580 3581 static int ib_uverbs_destroy_srq(struct uverbs_attr_bundle *attrs) 3582 { 3583 struct ib_uverbs_destroy_srq cmd; 3584 struct ib_uverbs_destroy_srq_resp resp; 3585 struct ib_uobject *uobj; 3586 struct ib_uevent_object *obj; 3587 int ret; 3588 3589 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3590 if (ret) 3591 return ret; 3592 3593 uobj = uobj_get_destroy(UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 3594 if (IS_ERR(uobj)) 3595 return PTR_ERR(uobj); 3596 3597 obj = container_of(uobj, struct ib_uevent_object, uobject); 3598 memset(&resp, 0, sizeof(resp)); 3599 resp.events_reported = obj->events_reported; 3600 3601 uobj_put_destroy(uobj); 3602 3603 return uverbs_response(attrs, &resp, sizeof(resp)); 3604 } 3605 3606 static int ib_uverbs_ex_query_device(struct uverbs_attr_bundle *attrs) 3607 { 3608 struct ib_uverbs_ex_query_device_resp resp = {}; 3609 struct ib_uverbs_ex_query_device cmd; 3610 struct ib_device_attr attr = {0}; 3611 struct ib_ucontext *ucontext; 3612 struct ib_device *ib_dev; 3613 int err; 3614 3615 ucontext = ib_uverbs_get_ucontext(attrs); 3616 if (IS_ERR(ucontext)) 3617 return PTR_ERR(ucontext); 3618 ib_dev = ucontext->device; 3619 3620 err = uverbs_request(attrs, &cmd, sizeof(cmd)); 3621 if (err) 3622 return err; 3623 3624 if (cmd.comp_mask) 3625 return -EINVAL; 3626 3627 if (cmd.reserved) 3628 return -EINVAL; 3629 3630 err = ib_dev->ops.query_device(ib_dev, &attr, &attrs->driver_udata); 3631 if (err) 3632 return err; 3633 3634 copy_query_dev_fields(ucontext, &resp.base, &attr); 3635 3636 resp.odp_caps.general_caps = attr.odp_caps.general_caps; 3637 resp.odp_caps.per_transport_caps.rc_odp_caps = 3638 attr.odp_caps.per_transport_caps.rc_odp_caps; 3639 resp.odp_caps.per_transport_caps.uc_odp_caps = 3640 attr.odp_caps.per_transport_caps.uc_odp_caps; 3641 resp.odp_caps.per_transport_caps.ud_odp_caps = 3642 attr.odp_caps.per_transport_caps.ud_odp_caps; 3643 resp.xrc_odp_caps = attr.odp_caps.per_transport_caps.xrc_odp_caps; 3644 3645 resp.timestamp_mask = attr.timestamp_mask; 3646 resp.hca_core_clock = attr.hca_core_clock; 3647 resp.device_cap_flags_ex = attr.device_cap_flags; 3648 resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts; 3649 resp.rss_caps.max_rwq_indirection_tables = 3650 attr.rss_caps.max_rwq_indirection_tables; 3651 resp.rss_caps.max_rwq_indirection_table_size = 3652 attr.rss_caps.max_rwq_indirection_table_size; 3653 resp.max_wq_type_rq = attr.max_wq_type_rq; 3654 resp.raw_packet_caps = attr.raw_packet_caps; 3655 resp.tm_caps.max_rndv_hdr_size = attr.tm_caps.max_rndv_hdr_size; 3656 resp.tm_caps.max_num_tags = attr.tm_caps.max_num_tags; 3657 resp.tm_caps.max_ops = attr.tm_caps.max_ops; 3658 resp.tm_caps.max_sge = attr.tm_caps.max_sge; 3659 resp.tm_caps.flags = attr.tm_caps.flags; 3660 resp.cq_moderation_caps.max_cq_moderation_count = 3661 attr.cq_caps.max_cq_moderation_count; 3662 resp.cq_moderation_caps.max_cq_moderation_period = 3663 attr.cq_caps.max_cq_moderation_period; 3664 resp.max_dm_size = attr.max_dm_size; 3665 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 3666 3667 return uverbs_response(attrs, &resp, sizeof(resp)); 3668 } 3669 3670 static int ib_uverbs_ex_modify_cq(struct uverbs_attr_bundle *attrs) 3671 { 3672 struct ib_uverbs_ex_modify_cq cmd; 3673 struct ib_cq *cq; 3674 int ret; 3675 3676 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3677 if (ret) 3678 return ret; 3679 3680 if (!cmd.attr_mask || cmd.reserved) 3681 return -EINVAL; 3682 3683 if (cmd.attr_mask > IB_CQ_MODERATE) 3684 return -EOPNOTSUPP; 3685 3686 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 3687 if (!cq) 3688 return -EINVAL; 3689 3690 ret = rdma_set_cq_moderation(cq, cmd.attr.cq_count, cmd.attr.cq_period); 3691 3692 uobj_put_obj_read(cq); 3693 3694 return ret; 3695 } 3696 3697 /* 3698 * Describe the input structs for write(). Some write methods have an input 3699 * only struct, most have an input and output. If the struct has an output then 3700 * the 'response' u64 must be the first field in the request structure. 3701 * 3702 * If udata is present then both the request and response structs have a 3703 * trailing driver_data flex array. In this case the size of the base struct 3704 * cannot be changed. 3705 */ 3706 #define offsetof_after(_struct, _member) \ 3707 (offsetof(_struct, _member) + sizeof(((_struct *)NULL)->_member)) 3708 3709 #define UAPI_DEF_WRITE_IO(req, resp) \ 3710 .write.has_resp = 1 + \ 3711 BUILD_BUG_ON_ZERO(offsetof(req, response) != 0) + \ 3712 BUILD_BUG_ON_ZERO(sizeof(((req *)0)->response) != \ 3713 sizeof(u64)), \ 3714 .write.req_size = sizeof(req), .write.resp_size = sizeof(resp) 3715 3716 #define UAPI_DEF_WRITE_I(req) .write.req_size = sizeof(req) 3717 3718 #define UAPI_DEF_WRITE_UDATA_IO(req, resp) \ 3719 UAPI_DEF_WRITE_IO(req, resp), \ 3720 .write.has_udata = \ 3721 1 + \ 3722 BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \ 3723 sizeof(req)) + \ 3724 BUILD_BUG_ON_ZERO(offsetof(resp, driver_data) != \ 3725 sizeof(resp)) 3726 3727 #define UAPI_DEF_WRITE_UDATA_I(req) \ 3728 UAPI_DEF_WRITE_I(req), \ 3729 .write.has_udata = \ 3730 1 + BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \ 3731 sizeof(req)) 3732 3733 /* 3734 * The _EX versions are for use with WRITE_EX and allow the last struct member 3735 * to be specified. Buffers that do not include that member will be rejected. 3736 */ 3737 #define UAPI_DEF_WRITE_IO_EX(req, req_last_member, resp, resp_last_member) \ 3738 .write.has_resp = 1, \ 3739 .write.req_size = offsetof_after(req, req_last_member), \ 3740 .write.resp_size = offsetof_after(resp, resp_last_member) 3741 3742 #define UAPI_DEF_WRITE_I_EX(req, req_last_member) \ 3743 .write.req_size = offsetof_after(req, req_last_member) 3744 3745 const struct uapi_definition uverbs_def_write_intf[] = { 3746 DECLARE_UVERBS_OBJECT( 3747 UVERBS_OBJECT_AH, 3748 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_AH, 3749 ib_uverbs_create_ah, 3750 UAPI_DEF_WRITE_UDATA_IO( 3751 struct ib_uverbs_create_ah, 3752 struct ib_uverbs_create_ah_resp), 3753 UAPI_DEF_METHOD_NEEDS_FN(create_ah)), 3754 DECLARE_UVERBS_WRITE( 3755 IB_USER_VERBS_CMD_DESTROY_AH, 3756 ib_uverbs_destroy_ah, 3757 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_ah), 3758 UAPI_DEF_METHOD_NEEDS_FN(destroy_ah))), 3759 3760 DECLARE_UVERBS_OBJECT( 3761 UVERBS_OBJECT_COMP_CHANNEL, 3762 DECLARE_UVERBS_WRITE( 3763 IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL, 3764 ib_uverbs_create_comp_channel, 3765 UAPI_DEF_WRITE_IO( 3766 struct ib_uverbs_create_comp_channel, 3767 struct ib_uverbs_create_comp_channel_resp))), 3768 3769 DECLARE_UVERBS_OBJECT( 3770 UVERBS_OBJECT_CQ, 3771 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_CQ, 3772 ib_uverbs_create_cq, 3773 UAPI_DEF_WRITE_UDATA_IO( 3774 struct ib_uverbs_create_cq, 3775 struct ib_uverbs_create_cq_resp), 3776 UAPI_DEF_METHOD_NEEDS_FN(create_cq)), 3777 DECLARE_UVERBS_WRITE( 3778 IB_USER_VERBS_CMD_DESTROY_CQ, 3779 ib_uverbs_destroy_cq, 3780 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_cq, 3781 struct ib_uverbs_destroy_cq_resp), 3782 UAPI_DEF_METHOD_NEEDS_FN(destroy_cq)), 3783 DECLARE_UVERBS_WRITE( 3784 IB_USER_VERBS_CMD_POLL_CQ, 3785 ib_uverbs_poll_cq, 3786 UAPI_DEF_WRITE_IO(struct ib_uverbs_poll_cq, 3787 struct ib_uverbs_poll_cq_resp), 3788 UAPI_DEF_METHOD_NEEDS_FN(poll_cq)), 3789 DECLARE_UVERBS_WRITE( 3790 IB_USER_VERBS_CMD_REQ_NOTIFY_CQ, 3791 ib_uverbs_req_notify_cq, 3792 UAPI_DEF_WRITE_I(struct ib_uverbs_req_notify_cq), 3793 UAPI_DEF_METHOD_NEEDS_FN(req_notify_cq)), 3794 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_RESIZE_CQ, 3795 ib_uverbs_resize_cq, 3796 UAPI_DEF_WRITE_UDATA_IO( 3797 struct ib_uverbs_resize_cq, 3798 struct ib_uverbs_resize_cq_resp), 3799 UAPI_DEF_METHOD_NEEDS_FN(resize_cq)), 3800 DECLARE_UVERBS_WRITE_EX( 3801 IB_USER_VERBS_EX_CMD_CREATE_CQ, 3802 ib_uverbs_ex_create_cq, 3803 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_cq, 3804 reserved, 3805 struct ib_uverbs_ex_create_cq_resp, 3806 response_length), 3807 UAPI_DEF_METHOD_NEEDS_FN(create_cq)), 3808 DECLARE_UVERBS_WRITE_EX( 3809 IB_USER_VERBS_EX_CMD_MODIFY_CQ, 3810 ib_uverbs_ex_modify_cq, 3811 UAPI_DEF_WRITE_I(struct ib_uverbs_ex_modify_cq), 3812 UAPI_DEF_METHOD_NEEDS_FN(create_cq))), 3813 3814 DECLARE_UVERBS_OBJECT( 3815 UVERBS_OBJECT_DEVICE, 3816 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_GET_CONTEXT, 3817 ib_uverbs_get_context, 3818 UAPI_DEF_WRITE_UDATA_IO( 3819 struct ib_uverbs_get_context, 3820 struct ib_uverbs_get_context_resp)), 3821 DECLARE_UVERBS_WRITE( 3822 IB_USER_VERBS_CMD_QUERY_DEVICE, 3823 ib_uverbs_query_device, 3824 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_device, 3825 struct ib_uverbs_query_device_resp)), 3826 DECLARE_UVERBS_WRITE( 3827 IB_USER_VERBS_CMD_QUERY_PORT, 3828 ib_uverbs_query_port, 3829 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_port, 3830 struct ib_uverbs_query_port_resp), 3831 UAPI_DEF_METHOD_NEEDS_FN(query_port)), 3832 DECLARE_UVERBS_WRITE_EX( 3833 IB_USER_VERBS_EX_CMD_QUERY_DEVICE, 3834 ib_uverbs_ex_query_device, 3835 UAPI_DEF_WRITE_IO_EX( 3836 struct ib_uverbs_ex_query_device, 3837 reserved, 3838 struct ib_uverbs_ex_query_device_resp, 3839 response_length), 3840 UAPI_DEF_METHOD_NEEDS_FN(query_device)), 3841 UAPI_DEF_OBJ_NEEDS_FN(alloc_ucontext), 3842 UAPI_DEF_OBJ_NEEDS_FN(dealloc_ucontext)), 3843 3844 DECLARE_UVERBS_OBJECT( 3845 UVERBS_OBJECT_FLOW, 3846 DECLARE_UVERBS_WRITE_EX( 3847 IB_USER_VERBS_EX_CMD_CREATE_FLOW, 3848 ib_uverbs_ex_create_flow, 3849 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_create_flow, 3850 flow_attr, 3851 struct ib_uverbs_create_flow_resp, 3852 flow_handle), 3853 UAPI_DEF_METHOD_NEEDS_FN(create_flow)), 3854 DECLARE_UVERBS_WRITE_EX( 3855 IB_USER_VERBS_EX_CMD_DESTROY_FLOW, 3856 ib_uverbs_ex_destroy_flow, 3857 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_flow), 3858 UAPI_DEF_METHOD_NEEDS_FN(destroy_flow))), 3859 3860 DECLARE_UVERBS_OBJECT( 3861 UVERBS_OBJECT_MR, 3862 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_DEREG_MR, 3863 ib_uverbs_dereg_mr, 3864 UAPI_DEF_WRITE_I(struct ib_uverbs_dereg_mr), 3865 UAPI_DEF_METHOD_NEEDS_FN(dereg_mr)), 3866 DECLARE_UVERBS_WRITE( 3867 IB_USER_VERBS_CMD_REG_MR, 3868 ib_uverbs_reg_mr, 3869 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_reg_mr, 3870 struct ib_uverbs_reg_mr_resp), 3871 UAPI_DEF_METHOD_NEEDS_FN(reg_user_mr)), 3872 DECLARE_UVERBS_WRITE( 3873 IB_USER_VERBS_CMD_REREG_MR, 3874 ib_uverbs_rereg_mr, 3875 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_rereg_mr, 3876 struct ib_uverbs_rereg_mr_resp), 3877 UAPI_DEF_METHOD_NEEDS_FN(rereg_user_mr))), 3878 3879 DECLARE_UVERBS_OBJECT( 3880 UVERBS_OBJECT_MW, 3881 DECLARE_UVERBS_WRITE( 3882 IB_USER_VERBS_CMD_ALLOC_MW, 3883 ib_uverbs_alloc_mw, 3884 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_mw, 3885 struct ib_uverbs_alloc_mw_resp), 3886 UAPI_DEF_METHOD_NEEDS_FN(alloc_mw)), 3887 DECLARE_UVERBS_WRITE( 3888 IB_USER_VERBS_CMD_DEALLOC_MW, 3889 ib_uverbs_dealloc_mw, 3890 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_mw), 3891 UAPI_DEF_METHOD_NEEDS_FN(dealloc_mw))), 3892 3893 DECLARE_UVERBS_OBJECT( 3894 UVERBS_OBJECT_PD, 3895 DECLARE_UVERBS_WRITE( 3896 IB_USER_VERBS_CMD_ALLOC_PD, 3897 ib_uverbs_alloc_pd, 3898 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_pd, 3899 struct ib_uverbs_alloc_pd_resp), 3900 UAPI_DEF_METHOD_NEEDS_FN(alloc_pd)), 3901 DECLARE_UVERBS_WRITE( 3902 IB_USER_VERBS_CMD_DEALLOC_PD, 3903 ib_uverbs_dealloc_pd, 3904 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_pd), 3905 UAPI_DEF_METHOD_NEEDS_FN(dealloc_pd))), 3906 3907 DECLARE_UVERBS_OBJECT( 3908 UVERBS_OBJECT_QP, 3909 DECLARE_UVERBS_WRITE( 3910 IB_USER_VERBS_CMD_ATTACH_MCAST, 3911 ib_uverbs_attach_mcast, 3912 UAPI_DEF_WRITE_I(struct ib_uverbs_attach_mcast), 3913 UAPI_DEF_METHOD_NEEDS_FN(attach_mcast), 3914 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)), 3915 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_QP, 3916 ib_uverbs_create_qp, 3917 UAPI_DEF_WRITE_UDATA_IO( 3918 struct ib_uverbs_create_qp, 3919 struct ib_uverbs_create_qp_resp), 3920 UAPI_DEF_METHOD_NEEDS_FN(create_qp)), 3921 DECLARE_UVERBS_WRITE( 3922 IB_USER_VERBS_CMD_DESTROY_QP, 3923 ib_uverbs_destroy_qp, 3924 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_qp, 3925 struct ib_uverbs_destroy_qp_resp), 3926 UAPI_DEF_METHOD_NEEDS_FN(destroy_qp)), 3927 DECLARE_UVERBS_WRITE( 3928 IB_USER_VERBS_CMD_DETACH_MCAST, 3929 ib_uverbs_detach_mcast, 3930 UAPI_DEF_WRITE_I(struct ib_uverbs_detach_mcast), 3931 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)), 3932 DECLARE_UVERBS_WRITE( 3933 IB_USER_VERBS_CMD_MODIFY_QP, 3934 ib_uverbs_modify_qp, 3935 UAPI_DEF_WRITE_I(struct ib_uverbs_modify_qp), 3936 UAPI_DEF_METHOD_NEEDS_FN(modify_qp)), 3937 DECLARE_UVERBS_WRITE( 3938 IB_USER_VERBS_CMD_POST_RECV, 3939 ib_uverbs_post_recv, 3940 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_recv, 3941 struct ib_uverbs_post_recv_resp), 3942 UAPI_DEF_METHOD_NEEDS_FN(post_recv)), 3943 DECLARE_UVERBS_WRITE( 3944 IB_USER_VERBS_CMD_POST_SEND, 3945 ib_uverbs_post_send, 3946 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_send, 3947 struct ib_uverbs_post_send_resp), 3948 UAPI_DEF_METHOD_NEEDS_FN(post_send)), 3949 DECLARE_UVERBS_WRITE( 3950 IB_USER_VERBS_CMD_QUERY_QP, 3951 ib_uverbs_query_qp, 3952 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_qp, 3953 struct ib_uverbs_query_qp_resp), 3954 UAPI_DEF_METHOD_NEEDS_FN(query_qp)), 3955 DECLARE_UVERBS_WRITE_EX( 3956 IB_USER_VERBS_EX_CMD_CREATE_QP, 3957 ib_uverbs_ex_create_qp, 3958 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_qp, 3959 comp_mask, 3960 struct ib_uverbs_ex_create_qp_resp, 3961 response_length), 3962 UAPI_DEF_METHOD_NEEDS_FN(create_qp)), 3963 DECLARE_UVERBS_WRITE_EX( 3964 IB_USER_VERBS_EX_CMD_MODIFY_QP, 3965 ib_uverbs_ex_modify_qp, 3966 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_modify_qp, 3967 base, 3968 struct ib_uverbs_ex_modify_qp_resp, 3969 response_length), 3970 UAPI_DEF_METHOD_NEEDS_FN(modify_qp))), 3971 3972 DECLARE_UVERBS_OBJECT( 3973 UVERBS_OBJECT_RWQ_IND_TBL, 3974 DECLARE_UVERBS_WRITE_EX( 3975 IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL, 3976 ib_uverbs_ex_create_rwq_ind_table, 3977 UAPI_DEF_WRITE_IO_EX( 3978 struct ib_uverbs_ex_create_rwq_ind_table, 3979 log_ind_tbl_size, 3980 struct ib_uverbs_ex_create_rwq_ind_table_resp, 3981 ind_tbl_num), 3982 UAPI_DEF_METHOD_NEEDS_FN(create_rwq_ind_table)), 3983 DECLARE_UVERBS_WRITE_EX( 3984 IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL, 3985 ib_uverbs_ex_destroy_rwq_ind_table, 3986 UAPI_DEF_WRITE_I( 3987 struct ib_uverbs_ex_destroy_rwq_ind_table), 3988 UAPI_DEF_METHOD_NEEDS_FN(destroy_rwq_ind_table))), 3989 3990 DECLARE_UVERBS_OBJECT( 3991 UVERBS_OBJECT_WQ, 3992 DECLARE_UVERBS_WRITE_EX( 3993 IB_USER_VERBS_EX_CMD_CREATE_WQ, 3994 ib_uverbs_ex_create_wq, 3995 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_wq, 3996 max_sge, 3997 struct ib_uverbs_ex_create_wq_resp, 3998 wqn), 3999 UAPI_DEF_METHOD_NEEDS_FN(create_wq)), 4000 DECLARE_UVERBS_WRITE_EX( 4001 IB_USER_VERBS_EX_CMD_DESTROY_WQ, 4002 ib_uverbs_ex_destroy_wq, 4003 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_destroy_wq, 4004 wq_handle, 4005 struct ib_uverbs_ex_destroy_wq_resp, 4006 reserved), 4007 UAPI_DEF_METHOD_NEEDS_FN(destroy_wq)), 4008 DECLARE_UVERBS_WRITE_EX( 4009 IB_USER_VERBS_EX_CMD_MODIFY_WQ, 4010 ib_uverbs_ex_modify_wq, 4011 UAPI_DEF_WRITE_I_EX(struct ib_uverbs_ex_modify_wq, 4012 curr_wq_state), 4013 UAPI_DEF_METHOD_NEEDS_FN(modify_wq))), 4014 4015 DECLARE_UVERBS_OBJECT( 4016 UVERBS_OBJECT_SRQ, 4017 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_SRQ, 4018 ib_uverbs_create_srq, 4019 UAPI_DEF_WRITE_UDATA_IO( 4020 struct ib_uverbs_create_srq, 4021 struct ib_uverbs_create_srq_resp), 4022 UAPI_DEF_METHOD_NEEDS_FN(create_srq)), 4023 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_XSRQ, 4024 ib_uverbs_create_xsrq, 4025 UAPI_DEF_WRITE_UDATA_IO( 4026 struct ib_uverbs_create_xsrq, 4027 struct ib_uverbs_create_srq_resp), 4028 UAPI_DEF_METHOD_NEEDS_FN(create_srq)), 4029 DECLARE_UVERBS_WRITE( 4030 IB_USER_VERBS_CMD_DESTROY_SRQ, 4031 ib_uverbs_destroy_srq, 4032 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_srq, 4033 struct ib_uverbs_destroy_srq_resp), 4034 UAPI_DEF_METHOD_NEEDS_FN(destroy_srq)), 4035 DECLARE_UVERBS_WRITE( 4036 IB_USER_VERBS_CMD_MODIFY_SRQ, 4037 ib_uverbs_modify_srq, 4038 UAPI_DEF_WRITE_UDATA_I(struct ib_uverbs_modify_srq), 4039 UAPI_DEF_METHOD_NEEDS_FN(modify_srq)), 4040 DECLARE_UVERBS_WRITE( 4041 IB_USER_VERBS_CMD_POST_SRQ_RECV, 4042 ib_uverbs_post_srq_recv, 4043 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_srq_recv, 4044 struct ib_uverbs_post_srq_recv_resp), 4045 UAPI_DEF_METHOD_NEEDS_FN(post_srq_recv)), 4046 DECLARE_UVERBS_WRITE( 4047 IB_USER_VERBS_CMD_QUERY_SRQ, 4048 ib_uverbs_query_srq, 4049 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_srq, 4050 struct ib_uverbs_query_srq_resp), 4051 UAPI_DEF_METHOD_NEEDS_FN(query_srq))), 4052 4053 DECLARE_UVERBS_OBJECT( 4054 UVERBS_OBJECT_XRCD, 4055 DECLARE_UVERBS_WRITE( 4056 IB_USER_VERBS_CMD_CLOSE_XRCD, 4057 ib_uverbs_close_xrcd, 4058 UAPI_DEF_WRITE_I(struct ib_uverbs_close_xrcd), 4059 UAPI_DEF_METHOD_NEEDS_FN(dealloc_xrcd)), 4060 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_QP, 4061 ib_uverbs_open_qp, 4062 UAPI_DEF_WRITE_UDATA_IO( 4063 struct ib_uverbs_open_qp, 4064 struct ib_uverbs_create_qp_resp)), 4065 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_XRCD, 4066 ib_uverbs_open_xrcd, 4067 UAPI_DEF_WRITE_UDATA_IO( 4068 struct ib_uverbs_open_xrcd, 4069 struct ib_uverbs_open_xrcd_resp), 4070 UAPI_DEF_METHOD_NEEDS_FN(alloc_xrcd))), 4071 4072 {}, 4073 }; 4074