1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0 3 * 4 * Copyright (c) 2005 Topspin Communications. All rights reserved. 5 * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved. 6 * Copyright (c) 2005 PathScale, Inc. All rights reserved. 7 * Copyright (c) 2006 Mellanox Technologies. All rights reserved. 8 * 9 * This software is available to you under a choice of one of two 10 * licenses. You may choose to be licensed under the terms of the GNU 11 * General Public License (GPL) Version 2, available from the file 12 * COPYING in the main directory of this source tree, or the 13 * OpenIB.org BSD license below: 14 * 15 * Redistribution and use in source and binary forms, with or 16 * without modification, are permitted provided that the following 17 * conditions are met: 18 * 19 * - Redistributions of source code must retain the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer. 22 * 23 * - Redistributions in binary form must reproduce the above 24 * copyright notice, this list of conditions and the following 25 * disclaimer in the documentation and/or other materials 26 * provided with the distribution. 27 * 28 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 29 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 30 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 31 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 32 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 33 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 34 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 35 * SOFTWARE. 36 */ 37 38 #include <sys/cdefs.h> 39 __FBSDID("$FreeBSD$"); 40 41 #define LINUXKPI_PARAM_PREFIX ibcore_ 42 43 #include <sys/priv.h> 44 45 #include <linux/file.h> 46 #include <linux/fs.h> 47 #include <linux/slab.h> 48 #include <linux/sched.h> 49 50 #include <linux/uaccess.h> 51 52 #include <rdma/uverbs_types.h> 53 #include <rdma/uverbs_std_types.h> 54 #include "rdma_core.h" 55 56 #include "uverbs.h" 57 #include "core_priv.h" 58 59 /* 60 * Copy a response to userspace. If the provided 'resp' is larger than the 61 * user buffer it is silently truncated. If the user provided a larger buffer 62 * then the trailing portion is zero filled. 63 * 64 * These semantics are intended to support future extension of the output 65 * structures. 66 */ 67 static int uverbs_response(struct uverbs_attr_bundle *attrs, const void *resp, 68 size_t resp_len) 69 { 70 int ret; 71 72 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT)) 73 return uverbs_copy_to_struct_or_zero( 74 attrs, UVERBS_ATTR_CORE_OUT, resp, resp_len); 75 76 if (copy_to_user(attrs->ucore.outbuf, resp, 77 min(attrs->ucore.outlen, resp_len))) 78 return -EFAULT; 79 80 if (resp_len < attrs->ucore.outlen) { 81 /* 82 * Zero fill any extra memory that user 83 * space might have provided. 84 */ 85 ret = clear_user(attrs->ucore.outbuf + resp_len, 86 attrs->ucore.outlen - resp_len); 87 if (ret) 88 return -EFAULT; 89 } 90 91 return 0; 92 } 93 94 /* 95 * Copy a request from userspace. If the provided 'req' is larger than the 96 * user buffer then the user buffer is zero extended into the 'req'. If 'req' 97 * is smaller than the user buffer then the uncopied bytes in the user buffer 98 * must be zero. 99 */ 100 static int uverbs_request(struct uverbs_attr_bundle *attrs, void *req, 101 size_t req_len) 102 { 103 if (copy_from_user(req, attrs->ucore.inbuf, 104 min(attrs->ucore.inlen, req_len))) 105 return -EFAULT; 106 107 if (attrs->ucore.inlen < req_len) { 108 memset((u8 *)req + attrs->ucore.inlen, 0, 109 req_len - attrs->ucore.inlen); 110 } else if (attrs->ucore.inlen > req_len) { 111 if (!ib_is_buffer_cleared(attrs->ucore.inbuf + req_len, 112 attrs->ucore.inlen - req_len)) 113 return -EOPNOTSUPP; 114 } 115 return 0; 116 } 117 118 /* 119 * Generate the value for the 'response_length' protocol used by write_ex. 120 * This is the number of bytes the kernel actually wrote. Userspace can use 121 * this to detect what structure members in the response the kernel 122 * understood. 123 */ 124 static u32 uverbs_response_length(struct uverbs_attr_bundle *attrs, 125 size_t resp_len) 126 { 127 return min_t(size_t, attrs->ucore.outlen, resp_len); 128 } 129 130 /* 131 * The iterator version of the request interface is for handlers that need to 132 * step over a flex array at the end of a command header. 133 */ 134 struct uverbs_req_iter { 135 const u8 __user *cur; 136 const u8 __user *end; 137 }; 138 139 static int uverbs_request_start(struct uverbs_attr_bundle *attrs, 140 struct uverbs_req_iter *iter, 141 void *req, 142 size_t req_len) 143 { 144 if (attrs->ucore.inlen < req_len) 145 return -ENOSPC; 146 147 if (copy_from_user(req, attrs->ucore.inbuf, req_len)) 148 return -EFAULT; 149 150 iter->cur = attrs->ucore.inbuf + req_len; 151 iter->end = attrs->ucore.inbuf + attrs->ucore.inlen; 152 return 0; 153 } 154 155 static int uverbs_request_next(struct uverbs_req_iter *iter, void *val, 156 size_t len) 157 { 158 if (iter->cur + len > iter->end) 159 return -ENOSPC; 160 161 if (copy_from_user(val, iter->cur, len)) 162 return -EFAULT; 163 164 iter->cur += len; 165 return 0; 166 } 167 168 static const void __user *uverbs_request_next_ptr(struct uverbs_req_iter *iter, 169 size_t len) 170 { 171 const void __user *res = iter->cur; 172 173 if (iter->cur + len > iter->end) 174 return (void __force __user *)ERR_PTR(-ENOSPC); 175 iter->cur += len; 176 return res; 177 } 178 179 static int uverbs_request_finish(struct uverbs_req_iter *iter) 180 { 181 if (!ib_is_buffer_cleared(iter->cur, iter->end - iter->cur)) 182 return -EOPNOTSUPP; 183 return 0; 184 } 185 186 /* 187 * When calling a destroy function during an error unwind we need to pass in 188 * the udata that is sanitized of all user arguments. Ie from the driver 189 * perspective it looks like no udata was passed. 190 */ 191 struct ib_udata *uverbs_get_cleared_udata(struct uverbs_attr_bundle *attrs) 192 { 193 attrs->driver_udata = (struct ib_udata){}; 194 return &attrs->driver_udata; 195 } 196 197 static struct ib_uverbs_completion_event_file * 198 _ib_uverbs_lookup_comp_file(s32 fd, struct uverbs_attr_bundle *attrs) 199 { 200 struct ib_uobject *uobj = ufd_get_read(UVERBS_OBJECT_COMP_CHANNEL, 201 fd, attrs); 202 203 if (IS_ERR(uobj)) 204 return (void *)uobj; 205 206 uverbs_uobject_get(uobj); 207 uobj_put_read(uobj); 208 209 return container_of(uobj, struct ib_uverbs_completion_event_file, 210 uobj); 211 } 212 #define ib_uverbs_lookup_comp_file(_fd, _ufile) ({ \ 213 CTASSERT(sizeof(_fd) == sizeof(s32)); \ 214 _ib_uverbs_lookup_comp_file(_fd, _ufile); \ 215 }) 216 217 int ib_alloc_ucontext(struct uverbs_attr_bundle *attrs) 218 { 219 struct ib_uverbs_file *ufile = attrs->ufile; 220 struct ib_ucontext *ucontext; 221 struct ib_device *ib_dev; 222 223 ib_dev = srcu_dereference(ufile->device->ib_dev, 224 &ufile->device->disassociate_srcu); 225 if (!ib_dev) 226 return -EIO; 227 228 ucontext = rdma_zalloc_drv_obj(ib_dev, ib_ucontext); 229 if (!ucontext) 230 return -ENOMEM; 231 232 ucontext->device = ib_dev; 233 ucontext->ufile = ufile; 234 xa_init_flags(&ucontext->mmap_xa, XA_FLAGS_ALLOC); 235 attrs->context = ucontext; 236 return 0; 237 } 238 239 int ib_init_ucontext(struct uverbs_attr_bundle *attrs) 240 { 241 struct ib_ucontext *ucontext = attrs->context; 242 struct ib_uverbs_file *file = attrs->ufile; 243 int ret; 244 245 if (!down_read_trylock(&file->hw_destroy_rwsem)) 246 return -EIO; 247 mutex_lock(&file->ucontext_lock); 248 if (file->ucontext) { 249 ret = -EINVAL; 250 goto err; 251 } 252 253 ret = ucontext->device->alloc_ucontext(ucontext, 254 &attrs->driver_udata); 255 if (ret) 256 goto err_uncharge; 257 258 /* 259 * Make sure that ib_uverbs_get_ucontext() sees the pointer update 260 * only after all writes to setup the ucontext have completed 261 */ 262 atomic_store_rel_ptr((uintptr_t *)&file->ucontext, (uintptr_t)ucontext); 263 264 mutex_unlock(&file->ucontext_lock); 265 up_read(&file->hw_destroy_rwsem); 266 return 0; 267 268 err_uncharge: 269 err: 270 mutex_unlock(&file->ucontext_lock); 271 up_read(&file->hw_destroy_rwsem); 272 return ret; 273 } 274 275 static int ib_uverbs_get_context(struct uverbs_attr_bundle *attrs) 276 { 277 struct ib_uverbs_get_context_resp resp; 278 struct ib_uverbs_get_context cmd; 279 struct ib_device *ib_dev; 280 struct ib_uobject *uobj; 281 int ret; 282 283 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 284 if (ret) 285 return ret; 286 287 ret = ib_alloc_ucontext(attrs); 288 if (ret) 289 return ret; 290 291 uobj = uobj_alloc(UVERBS_OBJECT_ASYNC_EVENT, attrs, &ib_dev); 292 if (IS_ERR(uobj)) { 293 ret = PTR_ERR(uobj); 294 goto err_ucontext; 295 } 296 297 resp = (struct ib_uverbs_get_context_resp){ 298 .num_comp_vectors = attrs->ufile->device->num_comp_vectors, 299 .async_fd = uobj->id, 300 }; 301 ret = uverbs_response(attrs, &resp, sizeof(resp)); 302 if (ret) 303 goto err_uobj; 304 305 ret = ib_init_ucontext(attrs); 306 if (ret) 307 goto err_uobj; 308 309 ib_uverbs_init_async_event_file( 310 container_of(uobj, struct ib_uverbs_async_event_file, uobj)); 311 rdma_alloc_commit_uobject(uobj, attrs); 312 return 0; 313 314 err_uobj: 315 rdma_alloc_abort_uobject(uobj, attrs); 316 err_ucontext: 317 kfree(attrs->context); 318 attrs->context = NULL; 319 return ret; 320 } 321 322 static void copy_query_dev_fields(struct ib_ucontext *ucontext, 323 struct ib_uverbs_query_device_resp *resp, 324 struct ib_device_attr *attr) 325 { 326 struct ib_device *ib_dev = ucontext->device; 327 328 resp->fw_ver = attr->fw_ver; 329 resp->node_guid = ib_dev->node_guid; 330 resp->sys_image_guid = attr->sys_image_guid; 331 resp->max_mr_size = attr->max_mr_size; 332 resp->page_size_cap = attr->page_size_cap; 333 resp->vendor_id = attr->vendor_id; 334 resp->vendor_part_id = attr->vendor_part_id; 335 resp->hw_ver = attr->hw_ver; 336 resp->max_qp = attr->max_qp; 337 resp->max_qp_wr = attr->max_qp_wr; 338 resp->device_cap_flags = (u32)attr->device_cap_flags; 339 resp->max_sge = min(attr->max_send_sge, attr->max_recv_sge); 340 resp->max_sge_rd = attr->max_sge_rd; 341 resp->max_cq = attr->max_cq; 342 resp->max_cqe = attr->max_cqe; 343 resp->max_mr = attr->max_mr; 344 resp->max_pd = attr->max_pd; 345 resp->max_qp_rd_atom = attr->max_qp_rd_atom; 346 resp->max_ee_rd_atom = attr->max_ee_rd_atom; 347 resp->max_res_rd_atom = attr->max_res_rd_atom; 348 resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom; 349 resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom; 350 resp->atomic_cap = attr->atomic_cap; 351 resp->max_ee = attr->max_ee; 352 resp->max_rdd = attr->max_rdd; 353 resp->max_mw = attr->max_mw; 354 resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp; 355 resp->max_raw_ethy_qp = attr->max_raw_ethy_qp; 356 resp->max_mcast_grp = attr->max_mcast_grp; 357 resp->max_mcast_qp_attach = attr->max_mcast_qp_attach; 358 resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach; 359 resp->max_ah = attr->max_ah; 360 resp->max_fmr = attr->max_fmr; 361 resp->max_map_per_fmr = attr->max_map_per_fmr; 362 resp->max_srq = attr->max_srq; 363 resp->max_srq_wr = attr->max_srq_wr; 364 resp->max_srq_sge = attr->max_srq_sge; 365 resp->max_pkeys = attr->max_pkeys; 366 resp->local_ca_ack_delay = attr->local_ca_ack_delay; 367 resp->phys_port_cnt = ib_dev->phys_port_cnt; 368 } 369 370 static int ib_uverbs_query_device(struct uverbs_attr_bundle *attrs) 371 { 372 struct ib_uverbs_query_device cmd; 373 struct ib_uverbs_query_device_resp resp; 374 struct ib_ucontext *ucontext; 375 int ret; 376 377 ucontext = ib_uverbs_get_ucontext(attrs); 378 if (IS_ERR(ucontext)) 379 return PTR_ERR(ucontext); 380 381 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 382 if (ret) 383 return ret; 384 385 memset(&resp, 0, sizeof resp); 386 copy_query_dev_fields(ucontext, &resp, &ucontext->device->attrs); 387 388 return uverbs_response(attrs, &resp, sizeof(resp)); 389 } 390 391 static int ib_uverbs_query_port(struct uverbs_attr_bundle *attrs) 392 { 393 struct ib_uverbs_query_port cmd; 394 struct ib_uverbs_query_port_resp resp; 395 struct ib_port_attr attr; 396 int ret; 397 struct ib_ucontext *ucontext; 398 struct ib_device *ib_dev; 399 400 ucontext = ib_uverbs_get_ucontext(attrs); 401 if (IS_ERR(ucontext)) 402 return PTR_ERR(ucontext); 403 ib_dev = ucontext->device; 404 405 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 406 if (ret) 407 return ret; 408 409 ret = ib_query_port(ib_dev, cmd.port_num, &attr); 410 if (ret) 411 return ret; 412 413 memset(&resp, 0, sizeof resp); 414 copy_port_attr_to_resp(&attr, &resp, ib_dev, cmd.port_num); 415 416 return uverbs_response(attrs, &resp, sizeof(resp)); 417 } 418 419 static int ib_uverbs_alloc_pd(struct uverbs_attr_bundle *attrs) 420 { 421 struct ib_uverbs_alloc_pd cmd; 422 struct ib_uverbs_alloc_pd_resp resp; 423 struct ib_uobject *uobj; 424 struct ib_pd *pd; 425 int ret; 426 struct ib_device *ib_dev; 427 428 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 429 if (ret) 430 return ret; 431 432 uobj = uobj_alloc(UVERBS_OBJECT_PD, attrs, &ib_dev); 433 if (IS_ERR(uobj)) 434 return PTR_ERR(uobj); 435 436 pd = rdma_zalloc_drv_obj(ib_dev, ib_pd); 437 if (!pd) { 438 ret = -ENOMEM; 439 goto err; 440 } 441 442 pd->device = ib_dev; 443 pd->uobject = uobj; 444 pd->__internal_mr = NULL; 445 atomic_set(&pd->usecnt, 0); 446 447 ret = ib_dev->alloc_pd(pd, &attrs->driver_udata); 448 if (ret) 449 goto err_alloc; 450 451 uobj->object = pd; 452 memset(&resp, 0, sizeof resp); 453 resp.pd_handle = uobj->id; 454 455 ret = uverbs_response(attrs, &resp, sizeof(resp)); 456 if (ret) 457 goto err_copy; 458 459 rdma_alloc_commit_uobject(uobj, attrs); 460 return 0; 461 462 err_copy: 463 ib_dealloc_pd_user(pd, uverbs_get_cleared_udata(attrs)); 464 pd = NULL; 465 err_alloc: 466 kfree(pd); 467 err: 468 uobj_alloc_abort(uobj, attrs); 469 return ret; 470 } 471 472 static int ib_uverbs_dealloc_pd(struct uverbs_attr_bundle *attrs) 473 { 474 struct ib_uverbs_dealloc_pd cmd; 475 int ret; 476 477 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 478 if (ret) 479 return ret; 480 481 return uobj_perform_destroy(UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 482 } 483 484 struct xrcd_table_entry { 485 struct rb_node node; 486 struct ib_xrcd *xrcd; 487 struct vnode *vnode; 488 }; 489 490 static int xrcd_table_insert(struct ib_uverbs_device *dev, 491 struct vnode *vnode, 492 struct ib_xrcd *xrcd) 493 { 494 struct xrcd_table_entry *entry, *scan; 495 struct rb_node **p = &dev->xrcd_tree.rb_node; 496 struct rb_node *parent = NULL; 497 498 entry = kmalloc(sizeof *entry, GFP_KERNEL); 499 if (!entry) 500 return -ENOMEM; 501 502 entry->xrcd = xrcd; 503 entry->vnode = vnode; 504 505 while (*p) { 506 parent = *p; 507 scan = rb_entry(parent, struct xrcd_table_entry, node); 508 509 if ((uintptr_t)vnode < (uintptr_t)scan->vnode) { 510 p = &(*p)->rb_left; 511 } else if ((uintptr_t)vnode > (uintptr_t)scan->vnode) { 512 p = &(*p)->rb_right; 513 } else { 514 kfree(entry); 515 return -EEXIST; 516 } 517 } 518 519 rb_link_node(&entry->node, parent, p); 520 rb_insert_color(&entry->node, &dev->xrcd_tree); 521 vrefact(vnode); 522 return 0; 523 } 524 525 static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev, 526 struct vnode *vnode) 527 { 528 struct xrcd_table_entry *entry; 529 struct rb_node *p = dev->xrcd_tree.rb_node; 530 531 while (p) { 532 entry = rb_entry(p, struct xrcd_table_entry, node); 533 534 if ((uintptr_t)vnode < (uintptr_t)entry->vnode) 535 p = p->rb_left; 536 else if ((uintptr_t)vnode > (uintptr_t)entry->vnode) 537 p = p->rb_right; 538 else 539 return entry; 540 } 541 542 return NULL; 543 } 544 545 static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct vnode *vnode) 546 { 547 struct xrcd_table_entry *entry; 548 549 entry = xrcd_table_search(dev, vnode); 550 if (!entry) 551 return NULL; 552 553 return entry->xrcd; 554 } 555 556 static void xrcd_table_delete(struct ib_uverbs_device *dev, 557 struct vnode *vnode) 558 { 559 struct xrcd_table_entry *entry; 560 561 entry = xrcd_table_search(dev, vnode); 562 if (entry) { 563 vrele(vnode); 564 rb_erase(&entry->node, &dev->xrcd_tree); 565 kfree(entry); 566 } 567 } 568 569 static int ib_uverbs_open_xrcd(struct uverbs_attr_bundle *attrs) 570 { 571 struct ib_uverbs_device *ibudev = attrs->ufile->device; 572 struct ib_uverbs_open_xrcd cmd; 573 struct ib_uverbs_open_xrcd_resp resp; 574 struct ib_uxrcd_object *obj; 575 struct ib_xrcd *xrcd = NULL; 576 struct vnode *vnode = NULL; 577 int ret = 0; 578 int new_xrcd = 0; 579 struct ib_device *ib_dev; 580 581 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 582 if (ret) 583 return ret; 584 585 mutex_lock(&ibudev->xrcd_tree_mutex); 586 587 if (cmd.fd != -1) { 588 /* search for file descriptor */ 589 ret = -fgetvp(curthread, cmd.fd, &cap_no_rights, &vnode); 590 if (ret != 0) 591 goto err_tree_mutex_unlock; 592 593 xrcd = find_xrcd(ibudev, vnode); 594 if (!xrcd && !(cmd.oflags & O_CREAT)) { 595 /* no file descriptor. Need CREATE flag */ 596 ret = -EAGAIN; 597 goto err_tree_mutex_unlock; 598 } 599 600 if (xrcd && cmd.oflags & O_EXCL) { 601 ret = -EINVAL; 602 goto err_tree_mutex_unlock; 603 } 604 } 605 606 obj = (struct ib_uxrcd_object *)uobj_alloc(UVERBS_OBJECT_XRCD, attrs, 607 &ib_dev); 608 if (IS_ERR(obj)) { 609 ret = PTR_ERR(obj); 610 goto err_tree_mutex_unlock; 611 } 612 613 if (!xrcd) { 614 xrcd = ib_dev->alloc_xrcd(ib_dev, &attrs->driver_udata); 615 if (IS_ERR(xrcd)) { 616 ret = PTR_ERR(xrcd); 617 goto err; 618 } 619 620 xrcd->vnode = vnode; 621 xrcd->device = ib_dev; 622 atomic_set(&xrcd->usecnt, 0); 623 mutex_init(&xrcd->tgt_qp_mutex); 624 INIT_LIST_HEAD(&xrcd->tgt_qp_list); 625 new_xrcd = 1; 626 } 627 628 atomic_set(&obj->refcnt, 0); 629 obj->uobject.object = xrcd; 630 memset(&resp, 0, sizeof resp); 631 resp.xrcd_handle = obj->uobject.id; 632 633 if (vnode != NULL) { 634 if (new_xrcd) { 635 /* create new vnode/xrcd table entry */ 636 ret = xrcd_table_insert(ibudev, vnode, xrcd); 637 if (ret) 638 goto err_dealloc_xrcd; 639 } 640 atomic_inc(&xrcd->usecnt); 641 } 642 643 ret = uverbs_response(attrs, &resp, sizeof(resp)); 644 if (ret) 645 goto err_copy; 646 647 if (vnode != NULL) 648 vrele(vnode); 649 650 mutex_unlock(&ibudev->xrcd_tree_mutex); 651 652 rdma_alloc_commit_uobject(&obj->uobject, attrs); 653 return 0; 654 655 err_copy: 656 if (vnode != NULL) { 657 if (new_xrcd) 658 xrcd_table_delete(ibudev, vnode); 659 atomic_dec(&xrcd->usecnt); 660 } 661 662 err_dealloc_xrcd: 663 ib_dealloc_xrcd(xrcd, uverbs_get_cleared_udata(attrs)); 664 665 err: 666 uobj_alloc_abort(&obj->uobject, attrs); 667 668 err_tree_mutex_unlock: 669 if (vnode != NULL) 670 vrele(vnode); 671 672 mutex_unlock(&ibudev->xrcd_tree_mutex); 673 674 return ret; 675 } 676 677 static int ib_uverbs_close_xrcd(struct uverbs_attr_bundle *attrs) 678 { 679 struct ib_uverbs_close_xrcd cmd; 680 int ret; 681 682 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 683 if (ret) 684 return ret; 685 686 return uobj_perform_destroy(UVERBS_OBJECT_XRCD, cmd.xrcd_handle, attrs); 687 } 688 689 int ib_uverbs_dealloc_xrcd(struct ib_uobject *uobject, struct ib_xrcd *xrcd, 690 enum rdma_remove_reason why, 691 struct uverbs_attr_bundle *attrs) 692 { 693 struct vnode *vnode; 694 int ret; 695 struct ib_uverbs_device *dev = attrs->ufile->device; 696 697 vnode = xrcd->vnode; 698 if (vnode && !atomic_dec_and_test(&xrcd->usecnt)) 699 return 0; 700 701 ret = ib_dealloc_xrcd(xrcd, &attrs->driver_udata); 702 703 if (ib_is_destroy_retryable(ret, why, uobject)) { 704 atomic_inc(&xrcd->usecnt); 705 return ret; 706 } 707 708 if (vnode) 709 xrcd_table_delete(dev, vnode); 710 711 return ret; 712 } 713 714 static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs) 715 { 716 struct ib_uverbs_reg_mr cmd; 717 struct ib_uverbs_reg_mr_resp resp; 718 struct ib_uobject *uobj; 719 struct ib_pd *pd; 720 struct ib_mr *mr; 721 int ret; 722 struct ib_device *ib_dev; 723 724 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 725 if (ret) 726 return ret; 727 728 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) 729 return -EINVAL; 730 731 ret = ib_check_mr_access(cmd.access_flags); 732 if (ret) 733 return ret; 734 735 uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev); 736 if (IS_ERR(uobj)) 737 return PTR_ERR(uobj); 738 739 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 740 if (!pd) { 741 ret = -EINVAL; 742 goto err_free; 743 } 744 745 if (cmd.access_flags & IB_ACCESS_ON_DEMAND) { 746 if (!(pd->device->attrs.device_cap_flags & 747 IB_DEVICE_ON_DEMAND_PAGING)) { 748 pr_debug("ODP support not available\n"); 749 ret = -EINVAL; 750 goto err_put; 751 } 752 } 753 754 mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, 755 cmd.access_flags, 756 &attrs->driver_udata); 757 if (IS_ERR(mr)) { 758 ret = PTR_ERR(mr); 759 goto err_put; 760 } 761 762 mr->device = pd->device; 763 mr->pd = pd; 764 mr->type = IB_MR_TYPE_USER; 765 mr->dm = NULL; 766 mr->sig_attrs = NULL; 767 mr->uobject = uobj; 768 atomic_inc(&pd->usecnt); 769 770 uobj->object = mr; 771 772 memset(&resp, 0, sizeof resp); 773 resp.lkey = mr->lkey; 774 resp.rkey = mr->rkey; 775 resp.mr_handle = uobj->id; 776 777 ret = uverbs_response(attrs, &resp, sizeof(resp)); 778 if (ret) 779 goto err_copy; 780 781 uobj_put_obj_read(pd); 782 783 rdma_alloc_commit_uobject(uobj, attrs); 784 return 0; 785 786 err_copy: 787 ib_dereg_mr_user(mr, uverbs_get_cleared_udata(attrs)); 788 789 err_put: 790 uobj_put_obj_read(pd); 791 792 err_free: 793 uobj_alloc_abort(uobj, attrs); 794 return ret; 795 } 796 797 static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs) 798 { 799 struct ib_uverbs_rereg_mr cmd; 800 struct ib_uverbs_rereg_mr_resp resp; 801 struct ib_pd *pd = NULL; 802 struct ib_mr *mr; 803 struct ib_pd *old_pd; 804 int ret; 805 struct ib_uobject *uobj; 806 807 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 808 if (ret) 809 return ret; 810 811 if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags) 812 return -EINVAL; 813 814 if ((cmd.flags & IB_MR_REREG_TRANS) && 815 (!cmd.start || !cmd.hca_va || 0 >= cmd.length || 816 (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))) 817 return -EINVAL; 818 819 uobj = uobj_get_write(UVERBS_OBJECT_MR, cmd.mr_handle, attrs); 820 if (IS_ERR(uobj)) 821 return PTR_ERR(uobj); 822 823 mr = uobj->object; 824 825 if (mr->dm) { 826 ret = -EINVAL; 827 goto put_uobjs; 828 } 829 830 if (cmd.flags & IB_MR_REREG_ACCESS) { 831 ret = ib_check_mr_access(cmd.access_flags); 832 if (ret) 833 goto put_uobjs; 834 } 835 836 if (cmd.flags & IB_MR_REREG_PD) { 837 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, 838 attrs); 839 if (!pd) { 840 ret = -EINVAL; 841 goto put_uobjs; 842 } 843 } 844 845 old_pd = mr->pd; 846 ret = mr->device->rereg_user_mr(mr, cmd.flags, cmd.start, 847 cmd.length, cmd.hca_va, 848 cmd.access_flags, pd, 849 &attrs->driver_udata); 850 if (ret) 851 goto put_uobj_pd; 852 853 if (cmd.flags & IB_MR_REREG_PD) { 854 atomic_inc(&pd->usecnt); 855 mr->pd = pd; 856 atomic_dec(&old_pd->usecnt); 857 } 858 859 memset(&resp, 0, sizeof(resp)); 860 resp.lkey = mr->lkey; 861 resp.rkey = mr->rkey; 862 863 ret = uverbs_response(attrs, &resp, sizeof(resp)); 864 865 put_uobj_pd: 866 if (cmd.flags & IB_MR_REREG_PD) 867 uobj_put_obj_read(pd); 868 869 put_uobjs: 870 uobj_put_write(uobj); 871 872 return ret; 873 } 874 875 static int ib_uverbs_dereg_mr(struct uverbs_attr_bundle *attrs) 876 { 877 struct ib_uverbs_dereg_mr cmd; 878 int ret; 879 880 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 881 if (ret) 882 return ret; 883 884 return uobj_perform_destroy(UVERBS_OBJECT_MR, cmd.mr_handle, attrs); 885 } 886 887 static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs) 888 { 889 struct ib_uverbs_alloc_mw cmd; 890 struct ib_uverbs_alloc_mw_resp resp; 891 struct ib_uobject *uobj; 892 struct ib_pd *pd; 893 struct ib_mw *mw; 894 int ret; 895 struct ib_device *ib_dev; 896 897 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 898 if (ret) 899 return ret; 900 901 uobj = uobj_alloc(UVERBS_OBJECT_MW, attrs, &ib_dev); 902 if (IS_ERR(uobj)) 903 return PTR_ERR(uobj); 904 905 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 906 if (!pd) { 907 ret = -EINVAL; 908 goto err_free; 909 } 910 911 if (cmd.mw_type != IB_MW_TYPE_1 && cmd.mw_type != IB_MW_TYPE_2) { 912 ret = -EINVAL; 913 goto err_put; 914 } 915 916 mw = pd->device->alloc_mw(pd, cmd.mw_type, &attrs->driver_udata); 917 if (IS_ERR(mw)) { 918 ret = PTR_ERR(mw); 919 goto err_put; 920 } 921 922 mw->device = pd->device; 923 mw->pd = pd; 924 mw->uobject = uobj; 925 atomic_inc(&pd->usecnt); 926 927 uobj->object = mw; 928 929 memset(&resp, 0, sizeof(resp)); 930 resp.rkey = mw->rkey; 931 resp.mw_handle = uobj->id; 932 933 ret = uverbs_response(attrs, &resp, sizeof(resp)); 934 if (ret) 935 goto err_copy; 936 937 uobj_put_obj_read(pd); 938 rdma_alloc_commit_uobject(uobj, attrs); 939 return 0; 940 941 err_copy: 942 uverbs_dealloc_mw(mw); 943 err_put: 944 uobj_put_obj_read(pd); 945 err_free: 946 uobj_alloc_abort(uobj, attrs); 947 return ret; 948 } 949 950 static int ib_uverbs_dealloc_mw(struct uverbs_attr_bundle *attrs) 951 { 952 struct ib_uverbs_dealloc_mw cmd; 953 int ret; 954 955 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 956 if (ret) 957 return ret; 958 959 return uobj_perform_destroy(UVERBS_OBJECT_MW, cmd.mw_handle, attrs); 960 } 961 962 static int ib_uverbs_create_comp_channel(struct uverbs_attr_bundle *attrs) 963 { 964 struct ib_uverbs_create_comp_channel cmd; 965 struct ib_uverbs_create_comp_channel_resp resp; 966 struct ib_uobject *uobj; 967 struct ib_uverbs_completion_event_file *ev_file; 968 struct ib_device *ib_dev; 969 int ret; 970 971 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 972 if (ret) 973 return ret; 974 975 uobj = uobj_alloc(UVERBS_OBJECT_COMP_CHANNEL, attrs, &ib_dev); 976 if (IS_ERR(uobj)) 977 return PTR_ERR(uobj); 978 979 resp.fd = uobj->id; 980 981 ev_file = container_of(uobj, struct ib_uverbs_completion_event_file, 982 uobj); 983 ib_uverbs_init_event_queue(&ev_file->ev_queue); 984 985 ret = uverbs_response(attrs, &resp, sizeof(resp)); 986 if (ret) { 987 uobj_alloc_abort(uobj, attrs); 988 return ret; 989 } 990 991 rdma_alloc_commit_uobject(uobj, attrs); 992 return 0; 993 } 994 995 static struct ib_ucq_object *create_cq(struct uverbs_attr_bundle *attrs, 996 struct ib_uverbs_ex_create_cq *cmd) 997 { 998 struct ib_ucq_object *obj; 999 struct ib_uverbs_completion_event_file *ev_file = NULL; 1000 struct ib_cq *cq; 1001 int ret; 1002 struct ib_uverbs_ex_create_cq_resp resp; 1003 struct ib_cq_init_attr attr = {}; 1004 struct ib_device *ib_dev; 1005 1006 if (cmd->comp_vector >= attrs->ufile->device->num_comp_vectors) 1007 return ERR_PTR(-EINVAL); 1008 1009 obj = (struct ib_ucq_object *)uobj_alloc(UVERBS_OBJECT_CQ, attrs, 1010 &ib_dev); 1011 if (IS_ERR(obj)) 1012 return obj; 1013 1014 if (cmd->comp_channel >= 0) { 1015 ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel, attrs); 1016 if (IS_ERR(ev_file)) { 1017 ret = PTR_ERR(ev_file); 1018 goto err; 1019 } 1020 } 1021 1022 obj->uevent.uobject.user_handle = cmd->user_handle; 1023 INIT_LIST_HEAD(&obj->comp_list); 1024 INIT_LIST_HEAD(&obj->uevent.event_list); 1025 1026 attr.cqe = cmd->cqe; 1027 attr.comp_vector = cmd->comp_vector; 1028 attr.flags = cmd->flags; 1029 1030 cq = rdma_zalloc_drv_obj(ib_dev, ib_cq); 1031 if (!cq) { 1032 ret = -ENOMEM; 1033 goto err_file; 1034 } 1035 cq->device = ib_dev; 1036 cq->uobject = obj; 1037 cq->comp_handler = ib_uverbs_comp_handler; 1038 cq->event_handler = ib_uverbs_cq_event_handler; 1039 cq->cq_context = ev_file ? &ev_file->ev_queue : NULL; 1040 atomic_set(&cq->usecnt, 0); 1041 1042 ret = ib_dev->create_cq(cq, &attr, &attrs->driver_udata); 1043 if (ret) 1044 goto err_free; 1045 1046 obj->uevent.uobject.object = cq; 1047 memset(&resp, 0, sizeof resp); 1048 resp.base.cq_handle = obj->uevent.uobject.id; 1049 resp.base.cqe = cq->cqe; 1050 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 1051 1052 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1053 if (ret) 1054 goto err_cb; 1055 1056 rdma_alloc_commit_uobject(&obj->uevent.uobject, attrs); 1057 return obj; 1058 1059 err_cb: 1060 ib_destroy_cq_user(cq, uverbs_get_cleared_udata(attrs)); 1061 cq = NULL; 1062 err_free: 1063 kfree(cq); 1064 err_file: 1065 if (ev_file) 1066 ib_uverbs_release_ucq(ev_file, obj); 1067 1068 err: 1069 uobj_alloc_abort(&obj->uevent.uobject, attrs); 1070 1071 return ERR_PTR(ret); 1072 } 1073 1074 static int ib_uverbs_create_cq(struct uverbs_attr_bundle *attrs) 1075 { 1076 struct ib_uverbs_create_cq cmd; 1077 struct ib_uverbs_ex_create_cq cmd_ex; 1078 struct ib_ucq_object *obj; 1079 int ret; 1080 1081 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1082 if (ret) 1083 return ret; 1084 1085 memset(&cmd_ex, 0, sizeof(cmd_ex)); 1086 cmd_ex.user_handle = cmd.user_handle; 1087 cmd_ex.cqe = cmd.cqe; 1088 cmd_ex.comp_vector = cmd.comp_vector; 1089 cmd_ex.comp_channel = cmd.comp_channel; 1090 1091 obj = create_cq(attrs, &cmd_ex); 1092 return PTR_ERR_OR_ZERO(obj); 1093 } 1094 1095 static int ib_uverbs_ex_create_cq(struct uverbs_attr_bundle *attrs) 1096 { 1097 struct ib_uverbs_ex_create_cq cmd; 1098 struct ib_ucq_object *obj; 1099 int ret; 1100 1101 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1102 if (ret) 1103 return ret; 1104 1105 if (cmd.comp_mask) 1106 return -EINVAL; 1107 1108 if (cmd.reserved) 1109 return -EINVAL; 1110 1111 obj = create_cq(attrs, &cmd); 1112 return PTR_ERR_OR_ZERO(obj); 1113 } 1114 1115 static int ib_uverbs_resize_cq(struct uverbs_attr_bundle *attrs) 1116 { 1117 struct ib_uverbs_resize_cq cmd; 1118 struct ib_uverbs_resize_cq_resp resp = {}; 1119 struct ib_cq *cq; 1120 int ret = -EINVAL; 1121 1122 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1123 if (ret) 1124 return ret; 1125 1126 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1127 if (!cq) 1128 return -EINVAL; 1129 1130 ret = cq->device->resize_cq(cq, cmd.cqe, &attrs->driver_udata); 1131 if (ret) 1132 goto out; 1133 1134 resp.cqe = cq->cqe; 1135 1136 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1137 out: 1138 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, 1139 UVERBS_LOOKUP_READ); 1140 1141 return ret; 1142 } 1143 1144 static int copy_wc_to_user(struct ib_device *ib_dev, void __user *dest, 1145 struct ib_wc *wc) 1146 { 1147 struct ib_uverbs_wc tmp; 1148 1149 tmp.wr_id = wc->wr_id; 1150 tmp.status = wc->status; 1151 tmp.opcode = wc->opcode; 1152 tmp.vendor_err = wc->vendor_err; 1153 tmp.byte_len = wc->byte_len; 1154 tmp.ex.imm_data = wc->ex.imm_data; 1155 tmp.qp_num = wc->qp->qp_num; 1156 tmp.src_qp = wc->src_qp; 1157 tmp.wc_flags = wc->wc_flags; 1158 tmp.pkey_index = wc->pkey_index; 1159 tmp.slid = wc->slid; 1160 tmp.sl = wc->sl; 1161 tmp.dlid_path_bits = wc->dlid_path_bits; 1162 tmp.port_num = wc->port_num; 1163 tmp.reserved = 0; 1164 1165 if (copy_to_user(dest, &tmp, sizeof tmp)) 1166 return -EFAULT; 1167 1168 return 0; 1169 } 1170 1171 static int ib_uverbs_poll_cq(struct uverbs_attr_bundle *attrs) 1172 { 1173 struct ib_uverbs_poll_cq cmd; 1174 struct ib_uverbs_poll_cq_resp resp; 1175 u8 __user *header_ptr; 1176 u8 __user *data_ptr; 1177 struct ib_cq *cq; 1178 struct ib_wc wc; 1179 int ret; 1180 1181 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1182 if (ret) 1183 return ret; 1184 1185 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1186 if (!cq) 1187 return -EINVAL; 1188 1189 /* we copy a struct ib_uverbs_poll_cq_resp to user space */ 1190 header_ptr = attrs->ucore.outbuf; 1191 data_ptr = header_ptr + sizeof resp; 1192 1193 memset(&resp, 0, sizeof resp); 1194 while (resp.count < cmd.ne) { 1195 ret = ib_poll_cq(cq, 1, &wc); 1196 if (ret < 0) 1197 goto out_put; 1198 if (!ret) 1199 break; 1200 1201 ret = copy_wc_to_user(cq->device, data_ptr, &wc); 1202 if (ret) 1203 goto out_put; 1204 1205 data_ptr += sizeof(struct ib_uverbs_wc); 1206 ++resp.count; 1207 } 1208 1209 if (copy_to_user(header_ptr, &resp, sizeof resp)) { 1210 ret = -EFAULT; 1211 goto out_put; 1212 } 1213 ret = 0; 1214 1215 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT)) 1216 ret = uverbs_output_written(attrs, UVERBS_ATTR_CORE_OUT); 1217 1218 out_put: 1219 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, 1220 UVERBS_LOOKUP_READ); 1221 return ret; 1222 } 1223 1224 static int ib_uverbs_req_notify_cq(struct uverbs_attr_bundle *attrs) 1225 { 1226 struct ib_uverbs_req_notify_cq cmd; 1227 struct ib_cq *cq; 1228 int ret; 1229 1230 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1231 if (ret) 1232 return ret; 1233 1234 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1235 if (!cq) 1236 return -EINVAL; 1237 1238 ib_req_notify_cq(cq, cmd.solicited_only ? 1239 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); 1240 1241 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, 1242 UVERBS_LOOKUP_READ); 1243 return 0; 1244 } 1245 1246 static int ib_uverbs_destroy_cq(struct uverbs_attr_bundle *attrs) 1247 { 1248 struct ib_uverbs_destroy_cq cmd; 1249 struct ib_uverbs_destroy_cq_resp resp; 1250 struct ib_uobject *uobj; 1251 struct ib_ucq_object *obj; 1252 int ret; 1253 1254 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1255 if (ret) 1256 return ret; 1257 1258 uobj = uobj_get_destroy(UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 1259 if (IS_ERR(uobj)) 1260 return PTR_ERR(uobj); 1261 1262 obj = container_of(uobj, struct ib_ucq_object, uevent.uobject); 1263 memset(&resp, 0, sizeof(resp)); 1264 resp.comp_events_reported = obj->comp_events_reported; 1265 resp.async_events_reported = obj->uevent.events_reported; 1266 1267 uobj_put_destroy(uobj); 1268 1269 return uverbs_response(attrs, &resp, sizeof(resp)); 1270 } 1271 1272 static int create_qp(struct uverbs_attr_bundle *attrs, 1273 struct ib_uverbs_ex_create_qp *cmd) 1274 { 1275 struct ib_uqp_object *obj; 1276 struct ib_device *device; 1277 struct ib_pd *pd = NULL; 1278 struct ib_xrcd *xrcd = NULL; 1279 struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT); 1280 struct ib_cq *scq = NULL, *rcq = NULL; 1281 struct ib_srq *srq = NULL; 1282 struct ib_qp *qp; 1283 struct ib_qp_init_attr attr = {}; 1284 struct ib_uverbs_ex_create_qp_resp resp; 1285 int ret; 1286 struct ib_rwq_ind_table *ind_tbl = NULL; 1287 bool has_sq = true; 1288 struct ib_device *ib_dev; 1289 1290 if (cmd->qp_type == IB_QPT_RAW_PACKET && priv_check(curthread, PRIV_NET_RAW) != 0) 1291 return -EPERM; 1292 1293 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs, 1294 &ib_dev); 1295 if (IS_ERR(obj)) 1296 return PTR_ERR(obj); 1297 obj->uxrcd = NULL; 1298 obj->uevent.uobject.user_handle = cmd->user_handle; 1299 mutex_init(&obj->mcast_lock); 1300 1301 if (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE) { 1302 ind_tbl = uobj_get_obj_read(rwq_ind_table, 1303 UVERBS_OBJECT_RWQ_IND_TBL, 1304 cmd->rwq_ind_tbl_handle, attrs); 1305 if (!ind_tbl) { 1306 ret = -EINVAL; 1307 goto err_put; 1308 } 1309 1310 attr.rwq_ind_tbl = ind_tbl; 1311 } 1312 1313 if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) { 1314 ret = -EINVAL; 1315 goto err_put; 1316 } 1317 1318 if (ind_tbl && !cmd->max_send_wr) 1319 has_sq = false; 1320 1321 if (cmd->qp_type == IB_QPT_XRC_TGT) { 1322 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->pd_handle, 1323 attrs); 1324 1325 if (IS_ERR(xrcd_uobj)) { 1326 ret = -EINVAL; 1327 goto err_put; 1328 } 1329 1330 xrcd = (struct ib_xrcd *)xrcd_uobj->object; 1331 if (!xrcd) { 1332 ret = -EINVAL; 1333 goto err_put; 1334 } 1335 device = xrcd->device; 1336 } else { 1337 if (cmd->qp_type == IB_QPT_XRC_INI) { 1338 cmd->max_recv_wr = 0; 1339 cmd->max_recv_sge = 0; 1340 } else { 1341 if (cmd->is_srq) { 1342 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, 1343 cmd->srq_handle, attrs); 1344 if (!srq || srq->srq_type == IB_SRQT_XRC) { 1345 ret = -EINVAL; 1346 goto err_put; 1347 } 1348 } 1349 1350 if (!ind_tbl) { 1351 if (cmd->recv_cq_handle != cmd->send_cq_handle) { 1352 rcq = uobj_get_obj_read( 1353 cq, UVERBS_OBJECT_CQ, 1354 cmd->recv_cq_handle, attrs); 1355 if (!rcq) { 1356 ret = -EINVAL; 1357 goto err_put; 1358 } 1359 } 1360 } 1361 } 1362 1363 if (has_sq) 1364 scq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, 1365 cmd->send_cq_handle, attrs); 1366 if (!ind_tbl) 1367 rcq = rcq ?: scq; 1368 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, 1369 attrs); 1370 if (!pd || (!scq && has_sq)) { 1371 ret = -EINVAL; 1372 goto err_put; 1373 } 1374 1375 device = pd->device; 1376 } 1377 1378 attr.event_handler = ib_uverbs_qp_event_handler; 1379 attr.send_cq = scq; 1380 attr.recv_cq = rcq; 1381 attr.srq = srq; 1382 attr.xrcd = xrcd; 1383 attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR : 1384 IB_SIGNAL_REQ_WR; 1385 attr.qp_type = cmd->qp_type; 1386 attr.create_flags = 0; 1387 1388 attr.cap.max_send_wr = cmd->max_send_wr; 1389 attr.cap.max_recv_wr = cmd->max_recv_wr; 1390 attr.cap.max_send_sge = cmd->max_send_sge; 1391 attr.cap.max_recv_sge = cmd->max_recv_sge; 1392 attr.cap.max_inline_data = cmd->max_inline_data; 1393 1394 INIT_LIST_HEAD(&obj->uevent.event_list); 1395 INIT_LIST_HEAD(&obj->mcast_list); 1396 1397 attr.create_flags = cmd->create_flags; 1398 if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK | 1399 IB_QP_CREATE_CROSS_CHANNEL | 1400 IB_QP_CREATE_MANAGED_SEND | 1401 IB_QP_CREATE_MANAGED_RECV | 1402 IB_QP_CREATE_SCATTER_FCS | 1403 IB_QP_CREATE_CVLAN_STRIPPING | 1404 IB_QP_CREATE_SOURCE_QPN | 1405 IB_QP_CREATE_PCI_WRITE_END_PADDING)) { 1406 ret = -EINVAL; 1407 goto err_put; 1408 } 1409 1410 if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) { 1411 if (priv_check(curthread, PRIV_NET_RAW)) { 1412 ret = -EPERM; 1413 goto err_put; 1414 } 1415 1416 attr.source_qpn = cmd->source_qpn; 1417 } 1418 1419 if (cmd->qp_type == IB_QPT_XRC_TGT) 1420 qp = ib_create_qp(pd, &attr); 1421 else 1422 qp = _ib_create_qp(device, pd, &attr, &attrs->driver_udata, 1423 obj); 1424 1425 if (IS_ERR(qp)) { 1426 ret = PTR_ERR(qp); 1427 goto err_put; 1428 } 1429 1430 if (cmd->qp_type != IB_QPT_XRC_TGT) { 1431 atomic_inc(&pd->usecnt); 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; 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 rdma_lookup_put_uobject(&scq->uobject->uevent.uobject, 1472 UVERBS_LOOKUP_READ); 1473 if (rcq && rcq != scq) 1474 rdma_lookup_put_uobject(&rcq->uobject->uevent.uobject, 1475 UVERBS_LOOKUP_READ); 1476 if (srq) 1477 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, 1478 UVERBS_LOOKUP_READ); 1479 if (ind_tbl) 1480 uobj_put_obj_read(ind_tbl); 1481 1482 rdma_alloc_commit_uobject(&obj->uevent.uobject, attrs); 1483 return 0; 1484 err_cb: 1485 ib_destroy_qp_user(qp, uverbs_get_cleared_udata(attrs)); 1486 1487 err_put: 1488 if (!IS_ERR(xrcd_uobj)) 1489 uobj_put_read(xrcd_uobj); 1490 if (pd) 1491 uobj_put_obj_read(pd); 1492 if (scq) 1493 rdma_lookup_put_uobject(&scq->uobject->uevent.uobject, 1494 UVERBS_LOOKUP_READ); 1495 if (rcq && rcq != scq) 1496 rdma_lookup_put_uobject(&rcq->uobject->uevent.uobject, 1497 UVERBS_LOOKUP_READ); 1498 if (srq) 1499 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, 1500 UVERBS_LOOKUP_READ); 1501 if (ind_tbl) 1502 uobj_put_obj_read(ind_tbl); 1503 1504 uobj_alloc_abort(&obj->uevent.uobject, attrs); 1505 return ret; 1506 } 1507 1508 static int ib_uverbs_create_qp(struct uverbs_attr_bundle *attrs) 1509 { 1510 struct ib_uverbs_create_qp cmd; 1511 struct ib_uverbs_ex_create_qp cmd_ex; 1512 int ret; 1513 1514 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1515 if (ret) 1516 return ret; 1517 1518 memset(&cmd_ex, 0, sizeof(cmd_ex)); 1519 cmd_ex.user_handle = cmd.user_handle; 1520 cmd_ex.pd_handle = cmd.pd_handle; 1521 cmd_ex.send_cq_handle = cmd.send_cq_handle; 1522 cmd_ex.recv_cq_handle = cmd.recv_cq_handle; 1523 cmd_ex.srq_handle = cmd.srq_handle; 1524 cmd_ex.max_send_wr = cmd.max_send_wr; 1525 cmd_ex.max_recv_wr = cmd.max_recv_wr; 1526 cmd_ex.max_send_sge = cmd.max_send_sge; 1527 cmd_ex.max_recv_sge = cmd.max_recv_sge; 1528 cmd_ex.max_inline_data = cmd.max_inline_data; 1529 cmd_ex.sq_sig_all = cmd.sq_sig_all; 1530 cmd_ex.qp_type = cmd.qp_type; 1531 cmd_ex.is_srq = cmd.is_srq; 1532 1533 return create_qp(attrs, &cmd_ex); 1534 } 1535 1536 static int ib_uverbs_ex_create_qp(struct uverbs_attr_bundle *attrs) 1537 { 1538 struct ib_uverbs_ex_create_qp cmd; 1539 int ret; 1540 1541 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1542 if (ret) 1543 return ret; 1544 1545 if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK) 1546 return -EINVAL; 1547 1548 if (cmd.reserved) 1549 return -EINVAL; 1550 1551 return create_qp(attrs, &cmd); 1552 } 1553 1554 static int ib_uverbs_open_qp(struct uverbs_attr_bundle *attrs) 1555 { 1556 struct ib_uverbs_open_qp cmd; 1557 struct ib_uverbs_create_qp_resp resp; 1558 struct ib_uqp_object *obj; 1559 struct ib_xrcd *xrcd; 1560 struct ib_uobject *uninitialized_var(xrcd_uobj); 1561 struct ib_qp *qp; 1562 struct ib_qp_open_attr attr = {}; 1563 int ret; 1564 struct ib_device *ib_dev; 1565 1566 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1567 if (ret) 1568 return ret; 1569 1570 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs, 1571 &ib_dev); 1572 if (IS_ERR(obj)) 1573 return PTR_ERR(obj); 1574 1575 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd.pd_handle, attrs); 1576 if (IS_ERR(xrcd_uobj)) { 1577 ret = -EINVAL; 1578 goto err_put; 1579 } 1580 1581 xrcd = (struct ib_xrcd *)xrcd_uobj->object; 1582 if (!xrcd) { 1583 ret = -EINVAL; 1584 goto err_xrcd; 1585 } 1586 1587 attr.event_handler = ib_uverbs_qp_event_handler; 1588 attr.qp_num = cmd.qpn; 1589 attr.qp_type = cmd.qp_type; 1590 1591 INIT_LIST_HEAD(&obj->uevent.event_list); 1592 INIT_LIST_HEAD(&obj->mcast_list); 1593 1594 qp = ib_open_qp(xrcd, &attr); 1595 if (IS_ERR(qp)) { 1596 ret = PTR_ERR(qp); 1597 goto err_xrcd; 1598 } 1599 1600 obj->uevent.uobject.object = qp; 1601 obj->uevent.uobject.user_handle = cmd.user_handle; 1602 1603 memset(&resp, 0, sizeof resp); 1604 resp.qpn = qp->qp_num; 1605 resp.qp_handle = obj->uevent.uobject.id; 1606 1607 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1608 if (ret) 1609 goto err_destroy; 1610 1611 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); 1612 atomic_inc(&obj->uxrcd->refcnt); 1613 qp->uobject = obj; 1614 uobj_put_read(xrcd_uobj); 1615 1616 rdma_alloc_commit_uobject(&obj->uevent.uobject, attrs); 1617 return 0; 1618 1619 err_destroy: 1620 ib_destroy_qp_user(qp, uverbs_get_cleared_udata(attrs)); 1621 err_xrcd: 1622 uobj_put_read(xrcd_uobj); 1623 err_put: 1624 uobj_alloc_abort(&obj->uevent.uobject, attrs); 1625 return ret; 1626 } 1627 1628 static void copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest *uverb_attr, 1629 struct ib_ah_attr *rdma_attr) 1630 { 1631 uverb_attr->dlid = rdma_attr->dlid; 1632 uverb_attr->sl = rdma_attr->sl; 1633 uverb_attr->src_path_bits = rdma_attr->src_path_bits; 1634 uverb_attr->static_rate = rdma_attr->static_rate; 1635 uverb_attr->is_global = !!(rdma_attr->ah_flags & IB_AH_GRH); 1636 if (uverb_attr->is_global) { 1637 const struct ib_global_route *grh = &rdma_attr->grh; 1638 1639 memcpy(uverb_attr->dgid, grh->dgid.raw, 16); 1640 uverb_attr->flow_label = grh->flow_label; 1641 uverb_attr->sgid_index = grh->sgid_index; 1642 uverb_attr->hop_limit = grh->hop_limit; 1643 uverb_attr->traffic_class = grh->traffic_class; 1644 } 1645 uverb_attr->port_num = rdma_attr->port_num; 1646 } 1647 1648 static int ib_uverbs_query_qp(struct uverbs_attr_bundle *attrs) 1649 { 1650 struct ib_uverbs_query_qp cmd; 1651 struct ib_uverbs_query_qp_resp resp; 1652 struct ib_qp *qp; 1653 struct ib_qp_attr *attr; 1654 struct ib_qp_init_attr *init_attr; 1655 int ret; 1656 1657 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1658 if (ret) 1659 return ret; 1660 1661 attr = kmalloc(sizeof *attr, GFP_KERNEL); 1662 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); 1663 if (!attr || !init_attr) { 1664 ret = -ENOMEM; 1665 goto out; 1666 } 1667 1668 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 1669 if (!qp) { 1670 ret = -EINVAL; 1671 goto out; 1672 } 1673 1674 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); 1675 1676 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, 1677 UVERBS_LOOKUP_READ); 1678 1679 if (ret) 1680 goto out; 1681 1682 memset(&resp, 0, sizeof resp); 1683 1684 resp.qp_state = attr->qp_state; 1685 resp.cur_qp_state = attr->cur_qp_state; 1686 resp.path_mtu = attr->path_mtu; 1687 resp.path_mig_state = attr->path_mig_state; 1688 resp.qkey = attr->qkey; 1689 resp.rq_psn = attr->rq_psn; 1690 resp.sq_psn = attr->sq_psn; 1691 resp.dest_qp_num = attr->dest_qp_num; 1692 resp.qp_access_flags = attr->qp_access_flags; 1693 resp.pkey_index = attr->pkey_index; 1694 resp.alt_pkey_index = attr->alt_pkey_index; 1695 resp.sq_draining = attr->sq_draining; 1696 resp.max_rd_atomic = attr->max_rd_atomic; 1697 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; 1698 resp.min_rnr_timer = attr->min_rnr_timer; 1699 resp.port_num = attr->port_num; 1700 resp.timeout = attr->timeout; 1701 resp.retry_cnt = attr->retry_cnt; 1702 resp.rnr_retry = attr->rnr_retry; 1703 resp.alt_port_num = attr->alt_port_num; 1704 resp.alt_timeout = attr->alt_timeout; 1705 1706 copy_ah_attr_to_uverbs(&resp.dest, &attr->ah_attr); 1707 copy_ah_attr_to_uverbs(&resp.alt_dest, &attr->alt_ah_attr); 1708 1709 resp.max_send_wr = init_attr->cap.max_send_wr; 1710 resp.max_recv_wr = init_attr->cap.max_recv_wr; 1711 resp.max_send_sge = init_attr->cap.max_send_sge; 1712 resp.max_recv_sge = init_attr->cap.max_recv_sge; 1713 resp.max_inline_data = init_attr->cap.max_inline_data; 1714 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; 1715 1716 ret = uverbs_response(attrs, &resp, sizeof(resp)); 1717 1718 out: 1719 kfree(attr); 1720 kfree(init_attr); 1721 1722 return ret; 1723 } 1724 1725 /* Remove ignored fields set in the attribute mask */ 1726 static int modify_qp_mask(enum ib_qp_type qp_type, int mask) 1727 { 1728 switch (qp_type) { 1729 case IB_QPT_XRC_INI: 1730 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER); 1731 case IB_QPT_XRC_TGT: 1732 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT | 1733 IB_QP_RNR_RETRY); 1734 default: 1735 return mask; 1736 } 1737 } 1738 1739 static void copy_ah_attr_from_uverbs(struct ib_device *dev, 1740 struct ib_ah_attr *rdma_attr, 1741 struct ib_uverbs_qp_dest *uverb_attr) 1742 { 1743 if (uverb_attr->is_global) { 1744 struct ib_global_route *grh = &rdma_attr->grh; 1745 1746 grh->flow_label = uverb_attr->flow_label; 1747 grh->sgid_index = uverb_attr->sgid_index; 1748 grh->hop_limit = uverb_attr->hop_limit; 1749 grh->traffic_class = uverb_attr->traffic_class; 1750 memcpy(grh->dgid.raw, uverb_attr->dgid, sizeof(grh->dgid)); 1751 rdma_attr->ah_flags = IB_AH_GRH; 1752 } else { 1753 rdma_attr->ah_flags = 0; 1754 } 1755 rdma_attr->dlid = uverb_attr->dlid; 1756 rdma_attr->sl = uverb_attr->sl; 1757 rdma_attr->src_path_bits = uverb_attr->src_path_bits; 1758 rdma_attr->static_rate = uverb_attr->static_rate; 1759 rdma_attr->port_num = uverb_attr->port_num; 1760 } 1761 1762 static int modify_qp(struct uverbs_attr_bundle *attrs, 1763 struct ib_uverbs_ex_modify_qp *cmd) 1764 { 1765 struct ib_qp_attr *attr; 1766 struct ib_qp *qp; 1767 int ret; 1768 1769 attr = kzalloc(sizeof(*attr), GFP_KERNEL); 1770 if (!attr) 1771 return -ENOMEM; 1772 1773 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd->base.qp_handle, 1774 attrs); 1775 if (!qp) { 1776 ret = -EINVAL; 1777 goto out; 1778 } 1779 1780 if ((cmd->base.attr_mask & IB_QP_PORT) && 1781 !rdma_is_port_valid(qp->device, cmd->base.port_num)) { 1782 ret = -EINVAL; 1783 goto release_qp; 1784 } 1785 1786 if ((cmd->base.attr_mask & IB_QP_AV)) { 1787 if (!rdma_is_port_valid(qp->device, cmd->base.dest.port_num)) { 1788 ret = -EINVAL; 1789 goto release_qp; 1790 } 1791 1792 if (cmd->base.attr_mask & IB_QP_STATE && 1793 cmd->base.qp_state == IB_QPS_RTR) { 1794 /* We are in INIT->RTR TRANSITION (if we are not, 1795 * this transition will be rejected in subsequent checks). 1796 * In the INIT->RTR transition, we cannot have IB_QP_PORT set, 1797 * but the IB_QP_STATE flag is required. 1798 * 1799 * Since kernel 3.14 (commit dbf727de7440), the uverbs driver, 1800 * when IB_QP_AV is set, has required inclusion of a valid 1801 * port number in the primary AV. (AVs are created and handled 1802 * differently for infiniband and ethernet (RoCE) ports). 1803 * 1804 * Check the port number included in the primary AV against 1805 * the port number in the qp struct, which was set (and saved) 1806 * in the RST->INIT transition. 1807 */ 1808 if (cmd->base.dest.port_num != qp->real_qp->port) { 1809 ret = -EINVAL; 1810 goto release_qp; 1811 } 1812 } else { 1813 /* We are in SQD->SQD. (If we are not, this transition will 1814 * be rejected later in the verbs layer checks). 1815 * Check for both IB_QP_PORT and IB_QP_AV, these can be set 1816 * together in the SQD->SQD transition. 1817 * 1818 * If only IP_QP_AV was set, add in IB_QP_PORT as well (the 1819 * verbs layer driver does not track primary port changes 1820 * resulting from path migration. Thus, in SQD, if the primary 1821 * AV is modified, the primary port should also be modified). 1822 * 1823 * Note that in this transition, the IB_QP_STATE flag 1824 * is not allowed. 1825 */ 1826 if (((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT)) 1827 == (IB_QP_AV | IB_QP_PORT)) && 1828 cmd->base.port_num != cmd->base.dest.port_num) { 1829 ret = -EINVAL; 1830 goto release_qp; 1831 } 1832 if ((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT)) 1833 == IB_QP_AV) { 1834 cmd->base.attr_mask |= IB_QP_PORT; 1835 cmd->base.port_num = cmd->base.dest.port_num; 1836 } 1837 } 1838 } 1839 1840 if ((cmd->base.attr_mask & IB_QP_ALT_PATH) && 1841 (!rdma_is_port_valid(qp->device, cmd->base.alt_port_num) || 1842 !rdma_is_port_valid(qp->device, cmd->base.alt_dest.port_num) || 1843 cmd->base.alt_port_num != cmd->base.alt_dest.port_num)) { 1844 ret = -EINVAL; 1845 goto release_qp; 1846 } 1847 1848 if ((cmd->base.attr_mask & IB_QP_CUR_STATE && 1849 cmd->base.cur_qp_state > IB_QPS_ERR) || 1850 (cmd->base.attr_mask & IB_QP_STATE && 1851 cmd->base.qp_state > IB_QPS_ERR)) { 1852 ret = -EINVAL; 1853 goto release_qp; 1854 } 1855 1856 if (cmd->base.attr_mask & IB_QP_STATE) 1857 attr->qp_state = cmd->base.qp_state; 1858 if (cmd->base.attr_mask & IB_QP_CUR_STATE) 1859 attr->cur_qp_state = cmd->base.cur_qp_state; 1860 if (cmd->base.attr_mask & IB_QP_PATH_MTU) 1861 attr->path_mtu = cmd->base.path_mtu; 1862 if (cmd->base.attr_mask & IB_QP_PATH_MIG_STATE) 1863 attr->path_mig_state = cmd->base.path_mig_state; 1864 if (cmd->base.attr_mask & IB_QP_QKEY) 1865 attr->qkey = cmd->base.qkey; 1866 if (cmd->base.attr_mask & IB_QP_RQ_PSN) 1867 attr->rq_psn = cmd->base.rq_psn; 1868 if (cmd->base.attr_mask & IB_QP_SQ_PSN) 1869 attr->sq_psn = cmd->base.sq_psn; 1870 if (cmd->base.attr_mask & IB_QP_DEST_QPN) 1871 attr->dest_qp_num = cmd->base.dest_qp_num; 1872 if (cmd->base.attr_mask & IB_QP_ACCESS_FLAGS) 1873 attr->qp_access_flags = cmd->base.qp_access_flags; 1874 if (cmd->base.attr_mask & IB_QP_PKEY_INDEX) 1875 attr->pkey_index = cmd->base.pkey_index; 1876 if (cmd->base.attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) 1877 attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify; 1878 if (cmd->base.attr_mask & IB_QP_MAX_QP_RD_ATOMIC) 1879 attr->max_rd_atomic = cmd->base.max_rd_atomic; 1880 if (cmd->base.attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) 1881 attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic; 1882 if (cmd->base.attr_mask & IB_QP_MIN_RNR_TIMER) 1883 attr->min_rnr_timer = cmd->base.min_rnr_timer; 1884 if (cmd->base.attr_mask & IB_QP_PORT) 1885 attr->port_num = cmd->base.port_num; 1886 if (cmd->base.attr_mask & IB_QP_TIMEOUT) 1887 attr->timeout = cmd->base.timeout; 1888 if (cmd->base.attr_mask & IB_QP_RETRY_CNT) 1889 attr->retry_cnt = cmd->base.retry_cnt; 1890 if (cmd->base.attr_mask & IB_QP_RNR_RETRY) 1891 attr->rnr_retry = cmd->base.rnr_retry; 1892 if (cmd->base.attr_mask & IB_QP_ALT_PATH) { 1893 attr->alt_port_num = cmd->base.alt_port_num; 1894 attr->alt_timeout = cmd->base.alt_timeout; 1895 attr->alt_pkey_index = cmd->base.alt_pkey_index; 1896 } 1897 if (cmd->base.attr_mask & IB_QP_RATE_LIMIT) 1898 attr->rate_limit = cmd->rate_limit; 1899 1900 if (cmd->base.attr_mask & IB_QP_AV) 1901 copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr, 1902 &cmd->base.dest); 1903 1904 if (cmd->base.attr_mask & IB_QP_ALT_PATH) 1905 copy_ah_attr_from_uverbs(qp->device, &attr->alt_ah_attr, 1906 &cmd->base.alt_dest); 1907 1908 ret = ib_modify_qp_with_udata(qp, attr, 1909 modify_qp_mask(qp->qp_type, 1910 cmd->base.attr_mask), 1911 &attrs->driver_udata); 1912 1913 release_qp: 1914 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, 1915 UVERBS_LOOKUP_READ); 1916 out: 1917 kfree(attr); 1918 1919 return ret; 1920 } 1921 1922 static int ib_uverbs_modify_qp(struct uverbs_attr_bundle *attrs) 1923 { 1924 struct ib_uverbs_ex_modify_qp cmd; 1925 int ret; 1926 1927 ret = uverbs_request(attrs, &cmd.base, sizeof(cmd.base)); 1928 if (ret) 1929 return ret; 1930 1931 if (cmd.base.attr_mask & 1932 ~((IB_USER_LEGACY_LAST_QP_ATTR_MASK << 1) - 1)) 1933 return -EOPNOTSUPP; 1934 1935 return modify_qp(attrs, &cmd); 1936 } 1937 1938 static int ib_uverbs_ex_modify_qp(struct uverbs_attr_bundle *attrs) 1939 { 1940 struct ib_uverbs_ex_modify_qp cmd; 1941 struct ib_uverbs_ex_modify_qp_resp resp = { 1942 .response_length = uverbs_response_length(attrs, sizeof(resp)) 1943 }; 1944 int ret; 1945 1946 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1947 if (ret) 1948 return ret; 1949 1950 /* 1951 * Last bit is reserved for extending the attr_mask by 1952 * using another field. 1953 */ 1954 BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1 << 31)); 1955 1956 if (cmd.base.attr_mask & 1957 ~((IB_USER_LAST_QP_ATTR_MASK << 1) - 1)) 1958 return -EOPNOTSUPP; 1959 1960 ret = modify_qp(attrs, &cmd); 1961 if (ret) 1962 return ret; 1963 1964 return uverbs_response(attrs, &resp, sizeof(resp)); 1965 } 1966 1967 static int ib_uverbs_destroy_qp(struct uverbs_attr_bundle *attrs) 1968 { 1969 struct ib_uverbs_destroy_qp cmd; 1970 struct ib_uverbs_destroy_qp_resp resp; 1971 struct ib_uobject *uobj; 1972 struct ib_uqp_object *obj; 1973 int ret; 1974 1975 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 1976 if (ret) 1977 return ret; 1978 1979 uobj = uobj_get_destroy(UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 1980 if (IS_ERR(uobj)) 1981 return PTR_ERR(uobj); 1982 1983 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); 1984 memset(&resp, 0, sizeof(resp)); 1985 resp.events_reported = obj->uevent.events_reported; 1986 1987 uobj_put_destroy(uobj); 1988 1989 return uverbs_response(attrs, &resp, sizeof(resp)); 1990 } 1991 1992 static void *alloc_wr(size_t wr_size, __u32 num_sge) 1993 { 1994 if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof (struct ib_sge))) / 1995 sizeof (struct ib_sge)) 1996 return NULL; 1997 1998 return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) + 1999 num_sge * sizeof (struct ib_sge), GFP_KERNEL); 2000 } 2001 2002 static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs) 2003 { 2004 struct ib_uverbs_post_send cmd; 2005 struct ib_uverbs_post_send_resp resp; 2006 struct ib_uverbs_send_wr *user_wr; 2007 struct ib_send_wr *wr = NULL, *last, *next; 2008 const struct ib_send_wr *bad_wr; 2009 struct ib_qp *qp; 2010 int i, sg_ind; 2011 int is_ud; 2012 int ret, ret2; 2013 size_t next_size; 2014 const struct ib_sge __user *sgls; 2015 const void __user *wqes; 2016 struct uverbs_req_iter iter; 2017 2018 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 2019 if (ret) 2020 return ret; 2021 wqes = uverbs_request_next_ptr(&iter, cmd.wqe_size * cmd.wr_count); 2022 if (IS_ERR(wqes)) 2023 return PTR_ERR(wqes); 2024 sgls = uverbs_request_next_ptr( 2025 &iter, cmd.sge_count * sizeof(struct ib_uverbs_sge)); 2026 if (IS_ERR(sgls)) 2027 return PTR_ERR(sgls); 2028 ret = uverbs_request_finish(&iter); 2029 if (ret) 2030 return ret; 2031 2032 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); 2033 if (!user_wr) 2034 return -ENOMEM; 2035 2036 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2037 if (!qp) { 2038 ret = -EINVAL; 2039 goto out; 2040 } 2041 2042 is_ud = qp->qp_type == IB_QPT_UD; 2043 sg_ind = 0; 2044 last = NULL; 2045 for (i = 0; i < cmd.wr_count; ++i) { 2046 if (copy_from_user(user_wr, (const u8 *)wqes + i * cmd.wqe_size, 2047 cmd.wqe_size)) { 2048 ret = -EFAULT; 2049 goto out_put; 2050 } 2051 2052 if (user_wr->num_sge + sg_ind > cmd.sge_count) { 2053 ret = -EINVAL; 2054 goto out_put; 2055 } 2056 2057 if (is_ud) { 2058 struct ib_ud_wr *ud; 2059 2060 if (user_wr->opcode != IB_WR_SEND && 2061 user_wr->opcode != IB_WR_SEND_WITH_IMM) { 2062 ret = -EINVAL; 2063 goto out_put; 2064 } 2065 2066 next_size = sizeof(*ud); 2067 ud = alloc_wr(next_size, user_wr->num_sge); 2068 if (!ud) { 2069 ret = -ENOMEM; 2070 goto out_put; 2071 } 2072 2073 ud->ah = uobj_get_obj_read(ah, UVERBS_OBJECT_AH, 2074 user_wr->wr.ud.ah, attrs); 2075 if (!ud->ah) { 2076 kfree(ud); 2077 ret = -EINVAL; 2078 goto out_put; 2079 } 2080 ud->remote_qpn = user_wr->wr.ud.remote_qpn; 2081 ud->remote_qkey = user_wr->wr.ud.remote_qkey; 2082 2083 next = &ud->wr; 2084 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM || 2085 user_wr->opcode == IB_WR_RDMA_WRITE || 2086 user_wr->opcode == IB_WR_RDMA_READ) { 2087 struct ib_rdma_wr *rdma; 2088 2089 next_size = sizeof(*rdma); 2090 rdma = alloc_wr(next_size, user_wr->num_sge); 2091 if (!rdma) { 2092 ret = -ENOMEM; 2093 goto out_put; 2094 } 2095 2096 rdma->remote_addr = user_wr->wr.rdma.remote_addr; 2097 rdma->rkey = user_wr->wr.rdma.rkey; 2098 2099 next = &rdma->wr; 2100 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP || 2101 user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) { 2102 struct ib_atomic_wr *atomic; 2103 2104 next_size = sizeof(*atomic); 2105 atomic = alloc_wr(next_size, user_wr->num_sge); 2106 if (!atomic) { 2107 ret = -ENOMEM; 2108 goto out_put; 2109 } 2110 2111 atomic->remote_addr = user_wr->wr.atomic.remote_addr; 2112 atomic->compare_add = user_wr->wr.atomic.compare_add; 2113 atomic->swap = user_wr->wr.atomic.swap; 2114 atomic->rkey = user_wr->wr.atomic.rkey; 2115 2116 next = &atomic->wr; 2117 } else if (user_wr->opcode == IB_WR_SEND || 2118 user_wr->opcode == IB_WR_SEND_WITH_IMM || 2119 user_wr->opcode == IB_WR_SEND_WITH_INV) { 2120 next_size = sizeof(*next); 2121 next = alloc_wr(next_size, user_wr->num_sge); 2122 if (!next) { 2123 ret = -ENOMEM; 2124 goto out_put; 2125 } 2126 } else { 2127 ret = -EINVAL; 2128 goto out_put; 2129 } 2130 2131 if (user_wr->opcode == IB_WR_SEND_WITH_IMM || 2132 user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) { 2133 next->ex.imm_data = 2134 (__be32 __force) user_wr->ex.imm_data; 2135 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) { 2136 next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey; 2137 } 2138 2139 if (!last) 2140 wr = next; 2141 else 2142 last->next = next; 2143 last = next; 2144 2145 next->next = NULL; 2146 next->wr_id = user_wr->wr_id; 2147 next->num_sge = user_wr->num_sge; 2148 next->opcode = user_wr->opcode; 2149 next->send_flags = user_wr->send_flags; 2150 2151 if (next->num_sge) { 2152 next->sg_list = (void *)((char *)next + 2153 ALIGN(next_size, sizeof(struct ib_sge))); 2154 if (copy_from_user(next->sg_list, sgls + sg_ind, 2155 next->num_sge * 2156 sizeof(struct ib_sge))) { 2157 ret = -EFAULT; 2158 goto out_put; 2159 } 2160 sg_ind += next->num_sge; 2161 } else 2162 next->sg_list = NULL; 2163 } 2164 2165 resp.bad_wr = 0; 2166 ret = qp->device->post_send(qp->real_qp, wr, &bad_wr); 2167 if (ret) 2168 for (next = wr; next; next = next->next) { 2169 ++resp.bad_wr; 2170 if (next == bad_wr) 2171 break; 2172 } 2173 2174 ret2 = uverbs_response(attrs, &resp, sizeof(resp)); 2175 if (ret2) 2176 ret = ret2; 2177 2178 out_put: 2179 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, 2180 UVERBS_LOOKUP_READ); 2181 2182 while (wr) { 2183 if (is_ud && ud_wr(wr)->ah) 2184 uobj_put_obj_read(ud_wr(wr)->ah); 2185 next = wr->next; 2186 kfree(wr); 2187 wr = next; 2188 } 2189 2190 out: 2191 kfree(user_wr); 2192 2193 return ret; 2194 } 2195 2196 static struct ib_recv_wr * 2197 ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count, 2198 u32 wqe_size, u32 sge_count) 2199 { 2200 struct ib_uverbs_recv_wr *user_wr; 2201 struct ib_recv_wr *wr = NULL, *last, *next; 2202 int sg_ind; 2203 int i; 2204 int ret; 2205 const struct ib_sge __user *sgls; 2206 const void __user *wqes; 2207 2208 if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) 2209 return ERR_PTR(-EINVAL); 2210 2211 wqes = uverbs_request_next_ptr(iter, wqe_size * wr_count); 2212 if (IS_ERR(wqes)) 2213 return ERR_CAST(wqes); 2214 sgls = uverbs_request_next_ptr( 2215 iter, sge_count * sizeof(struct ib_uverbs_sge)); 2216 if (IS_ERR(sgls)) 2217 return ERR_CAST(sgls); 2218 ret = uverbs_request_finish(iter); 2219 if (ret) 2220 return ERR_PTR(ret); 2221 2222 user_wr = kmalloc(wqe_size, GFP_KERNEL); 2223 if (!user_wr) 2224 return ERR_PTR(-ENOMEM); 2225 2226 sg_ind = 0; 2227 last = NULL; 2228 for (i = 0; i < wr_count; ++i) { 2229 if (copy_from_user(user_wr, (const char *)wqes + i * wqe_size, 2230 wqe_size)) { 2231 ret = -EFAULT; 2232 goto err; 2233 } 2234 2235 if (user_wr->num_sge + sg_ind > sge_count) { 2236 ret = -EINVAL; 2237 goto err; 2238 } 2239 2240 if (user_wr->num_sge >= 2241 (U32_MAX - ALIGN(sizeof *next, sizeof (struct ib_sge))) / 2242 sizeof (struct ib_sge)) { 2243 ret = -EINVAL; 2244 goto err; 2245 } 2246 2247 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + 2248 user_wr->num_sge * sizeof (struct ib_sge), 2249 GFP_KERNEL); 2250 if (!next) { 2251 ret = -ENOMEM; 2252 goto err; 2253 } 2254 2255 if (!last) 2256 wr = next; 2257 else 2258 last->next = next; 2259 last = next; 2260 2261 next->next = NULL; 2262 next->wr_id = user_wr->wr_id; 2263 next->num_sge = user_wr->num_sge; 2264 2265 if (next->num_sge) { 2266 next->sg_list = (void *)((char *)next + 2267 ALIGN(sizeof *next, sizeof (struct ib_sge))); 2268 if (copy_from_user(next->sg_list, sgls + sg_ind, 2269 next->num_sge * 2270 sizeof(struct ib_sge))) { 2271 ret = -EFAULT; 2272 goto err; 2273 } 2274 sg_ind += next->num_sge; 2275 } else 2276 next->sg_list = NULL; 2277 } 2278 2279 kfree(user_wr); 2280 return wr; 2281 2282 err: 2283 kfree(user_wr); 2284 2285 while (wr) { 2286 next = wr->next; 2287 kfree(wr); 2288 wr = next; 2289 } 2290 2291 return ERR_PTR(ret); 2292 } 2293 2294 static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs) 2295 { 2296 struct ib_uverbs_post_recv cmd; 2297 struct ib_uverbs_post_recv_resp resp; 2298 struct ib_recv_wr *wr, *next; 2299 const struct ib_recv_wr *bad_wr; 2300 struct ib_qp *qp; 2301 int ret, ret2; 2302 struct uverbs_req_iter iter; 2303 2304 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 2305 if (ret) 2306 return ret; 2307 2308 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size, 2309 cmd.sge_count); 2310 if (IS_ERR(wr)) 2311 return PTR_ERR(wr); 2312 2313 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2314 if (!qp) { 2315 ret = -EINVAL; 2316 goto out; 2317 } 2318 2319 resp.bad_wr = 0; 2320 ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr); 2321 2322 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, 2323 UVERBS_LOOKUP_READ); 2324 if (ret) { 2325 for (next = wr; next; next = next->next) { 2326 ++resp.bad_wr; 2327 if (next == bad_wr) 2328 break; 2329 } 2330 } 2331 2332 ret2 = uverbs_response(attrs, &resp, sizeof(resp)); 2333 if (ret2) 2334 ret = ret2; 2335 out: 2336 while (wr) { 2337 next = wr->next; 2338 kfree(wr); 2339 wr = next; 2340 } 2341 2342 return ret; 2343 } 2344 2345 static int ib_uverbs_post_srq_recv(struct uverbs_attr_bundle *attrs) 2346 { 2347 struct ib_uverbs_post_srq_recv cmd; 2348 struct ib_uverbs_post_srq_recv_resp resp; 2349 struct ib_recv_wr *wr, *next; 2350 const struct ib_recv_wr *bad_wr; 2351 struct ib_srq *srq; 2352 int ret, ret2; 2353 struct uverbs_req_iter iter; 2354 2355 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 2356 if (ret) 2357 return ret; 2358 2359 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size, 2360 cmd.sge_count); 2361 if (IS_ERR(wr)) 2362 return PTR_ERR(wr); 2363 2364 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 2365 if (!srq) { 2366 ret = -EINVAL; 2367 goto out; 2368 } 2369 2370 resp.bad_wr = 0; 2371 ret = srq->device->post_srq_recv(srq, wr, &bad_wr); 2372 2373 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, 2374 UVERBS_LOOKUP_READ); 2375 2376 if (ret) 2377 for (next = wr; next; next = next->next) { 2378 ++resp.bad_wr; 2379 if (next == bad_wr) 2380 break; 2381 } 2382 2383 ret2 = uverbs_response(attrs, &resp, sizeof(resp)); 2384 if (ret2) 2385 ret = ret2; 2386 2387 out: 2388 while (wr) { 2389 next = wr->next; 2390 kfree(wr); 2391 wr = next; 2392 } 2393 2394 return ret; 2395 } 2396 2397 static int ib_uverbs_create_ah(struct uverbs_attr_bundle *attrs) 2398 { 2399 struct ib_uverbs_create_ah cmd; 2400 struct ib_uverbs_create_ah_resp resp; 2401 struct ib_uobject *uobj; 2402 struct ib_pd *pd; 2403 struct ib_ah *ah; 2404 struct ib_ah_attr attr = {}; 2405 int ret; 2406 struct ib_device *ib_dev; 2407 2408 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2409 if (ret) 2410 return ret; 2411 2412 uobj = uobj_alloc(UVERBS_OBJECT_AH, attrs, &ib_dev); 2413 if (IS_ERR(uobj)) 2414 return PTR_ERR(uobj); 2415 2416 if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num)) { 2417 ret = -EINVAL; 2418 goto err; 2419 } 2420 2421 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 2422 if (!pd) { 2423 ret = -EINVAL; 2424 goto err; 2425 } 2426 2427 attr.dlid = cmd.attr.dlid; 2428 attr.sl = cmd.attr.sl; 2429 attr.src_path_bits = cmd.attr.src_path_bits; 2430 attr.static_rate = cmd.attr.static_rate; 2431 attr.port_num = cmd.attr.port_num; 2432 2433 if (cmd.attr.is_global) { 2434 struct ib_global_route *grh = &attr.grh; 2435 2436 grh->flow_label = cmd.attr.grh.flow_label; 2437 grh->sgid_index = cmd.attr.grh.sgid_index; 2438 grh->hop_limit = cmd.attr.grh.hop_limit; 2439 grh->traffic_class = cmd.attr.grh.traffic_class; 2440 memcpy(grh->dgid.raw, cmd.attr.grh.dgid, sizeof(grh->dgid)); 2441 attr.ah_flags = IB_AH_GRH; 2442 } else { 2443 attr.ah_flags = 0; 2444 } 2445 2446 ah = ib_create_user_ah(pd, &attr, &attrs->driver_udata); 2447 if (IS_ERR(ah)) { 2448 ret = PTR_ERR(ah); 2449 goto err_put; 2450 } 2451 2452 ah->uobject = uobj; 2453 uobj->user_handle = cmd.user_handle; 2454 uobj->object = ah; 2455 2456 resp.ah_handle = uobj->id; 2457 2458 ret = uverbs_response(attrs, &resp, sizeof(resp)); 2459 if (ret) 2460 goto err_copy; 2461 2462 uobj_put_obj_read(pd); 2463 rdma_alloc_commit_uobject(uobj, attrs); 2464 return 0; 2465 2466 err_copy: 2467 ib_destroy_ah_user(ah, RDMA_DESTROY_AH_SLEEPABLE, 2468 uverbs_get_cleared_udata(attrs)); 2469 2470 err_put: 2471 uobj_put_obj_read(pd); 2472 2473 err: 2474 uobj_alloc_abort(uobj, attrs); 2475 return ret; 2476 } 2477 2478 static int ib_uverbs_destroy_ah(struct uverbs_attr_bundle *attrs) 2479 { 2480 struct ib_uverbs_destroy_ah cmd; 2481 int ret; 2482 2483 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2484 if (ret) 2485 return ret; 2486 2487 return uobj_perform_destroy(UVERBS_OBJECT_AH, cmd.ah_handle, attrs); 2488 } 2489 2490 static int ib_uverbs_attach_mcast(struct uverbs_attr_bundle *attrs) 2491 { 2492 struct ib_uverbs_attach_mcast cmd; 2493 struct ib_qp *qp; 2494 struct ib_uqp_object *obj; 2495 struct ib_uverbs_mcast_entry *mcast; 2496 int ret; 2497 2498 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2499 if (ret) 2500 return ret; 2501 2502 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2503 if (!qp) 2504 return -EINVAL; 2505 2506 obj = qp->uobject; 2507 2508 mutex_lock(&obj->mcast_lock); 2509 list_for_each_entry(mcast, &obj->mcast_list, list) 2510 if (cmd.mlid == mcast->lid && 2511 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { 2512 ret = 0; 2513 goto out_put; 2514 } 2515 2516 mcast = kmalloc(sizeof *mcast, GFP_KERNEL); 2517 if (!mcast) { 2518 ret = -ENOMEM; 2519 goto out_put; 2520 } 2521 2522 mcast->lid = cmd.mlid; 2523 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); 2524 2525 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); 2526 if (!ret) 2527 list_add_tail(&mcast->list, &obj->mcast_list); 2528 else 2529 kfree(mcast); 2530 2531 out_put: 2532 mutex_unlock(&obj->mcast_lock); 2533 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, 2534 UVERBS_LOOKUP_READ); 2535 2536 return ret; 2537 } 2538 2539 static int ib_uverbs_detach_mcast(struct uverbs_attr_bundle *attrs) 2540 { 2541 struct ib_uverbs_detach_mcast cmd; 2542 struct ib_uqp_object *obj; 2543 struct ib_qp *qp; 2544 struct ib_uverbs_mcast_entry *mcast; 2545 int ret; 2546 bool found = false; 2547 2548 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 2549 if (ret) 2550 return ret; 2551 2552 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 2553 if (!qp) 2554 return -EINVAL; 2555 2556 obj = qp->uobject; 2557 mutex_lock(&obj->mcast_lock); 2558 2559 list_for_each_entry(mcast, &obj->mcast_list, list) 2560 if (cmd.mlid == mcast->lid && 2561 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { 2562 list_del(&mcast->list); 2563 kfree(mcast); 2564 found = true; 2565 break; 2566 } 2567 2568 if (!found) { 2569 ret = -EINVAL; 2570 goto out_put; 2571 } 2572 2573 ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid); 2574 2575 out_put: 2576 mutex_unlock(&obj->mcast_lock); 2577 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, 2578 UVERBS_LOOKUP_READ); 2579 return ret; 2580 } 2581 2582 struct ib_uflow_resources *flow_resources_alloc(size_t num_specs) 2583 { 2584 struct ib_uflow_resources *resources; 2585 2586 resources = kzalloc(sizeof(*resources), GFP_KERNEL); 2587 2588 if (!resources) 2589 return NULL; 2590 2591 if (!num_specs) 2592 goto out; 2593 2594 resources->counters = 2595 kcalloc(num_specs, sizeof(*resources->counters), GFP_KERNEL); 2596 resources->collection = 2597 kcalloc(num_specs, sizeof(*resources->collection), GFP_KERNEL); 2598 2599 if (!resources->counters || !resources->collection) 2600 goto err; 2601 2602 out: 2603 resources->max = num_specs; 2604 return resources; 2605 2606 err: 2607 kfree(resources->counters); 2608 kfree(resources); 2609 2610 return NULL; 2611 } 2612 EXPORT_SYMBOL(flow_resources_alloc); 2613 2614 void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res) 2615 { 2616 unsigned int i; 2617 2618 if (!uflow_res) 2619 return; 2620 2621 for (i = 0; i < uflow_res->collection_num; i++) 2622 atomic_dec(&uflow_res->collection[i]->usecnt); 2623 2624 for (i = 0; i < uflow_res->counters_num; i++) 2625 atomic_dec(&uflow_res->counters[i]->usecnt); 2626 2627 kfree(uflow_res->collection); 2628 kfree(uflow_res->counters); 2629 kfree(uflow_res); 2630 } 2631 EXPORT_SYMBOL(ib_uverbs_flow_resources_free); 2632 2633 void flow_resources_add(struct ib_uflow_resources *uflow_res, 2634 enum ib_flow_spec_type type, 2635 void *ibobj) 2636 { 2637 WARN_ON(uflow_res->num >= uflow_res->max); 2638 2639 switch (type) { 2640 case IB_FLOW_SPEC_ACTION_HANDLE: 2641 atomic_inc(&((struct ib_flow_action *)ibobj)->usecnt); 2642 uflow_res->collection[uflow_res->collection_num++] = 2643 (struct ib_flow_action *)ibobj; 2644 break; 2645 case IB_FLOW_SPEC_ACTION_COUNT: 2646 atomic_inc(&((struct ib_counters *)ibobj)->usecnt); 2647 uflow_res->counters[uflow_res->counters_num++] = 2648 (struct ib_counters *)ibobj; 2649 break; 2650 default: 2651 WARN_ON(1); 2652 } 2653 2654 uflow_res->num++; 2655 } 2656 EXPORT_SYMBOL(flow_resources_add); 2657 2658 static int kern_spec_to_ib_spec_action(struct uverbs_attr_bundle *attrs, 2659 struct ib_uverbs_flow_spec *kern_spec, 2660 union ib_flow_spec *ib_spec, 2661 struct ib_uflow_resources *uflow_res) 2662 { 2663 ib_spec->type = kern_spec->type; 2664 switch (ib_spec->type) { 2665 case IB_FLOW_SPEC_ACTION_TAG: 2666 if (kern_spec->flow_tag.size != 2667 sizeof(struct ib_uverbs_flow_spec_action_tag)) 2668 return -EINVAL; 2669 2670 ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag); 2671 ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id; 2672 break; 2673 case IB_FLOW_SPEC_ACTION_DROP: 2674 if (kern_spec->drop.size != 2675 sizeof(struct ib_uverbs_flow_spec_action_drop)) 2676 return -EINVAL; 2677 2678 ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop); 2679 break; 2680 case IB_FLOW_SPEC_ACTION_HANDLE: 2681 if (kern_spec->action.size != 2682 sizeof(struct ib_uverbs_flow_spec_action_handle)) 2683 return -EOPNOTSUPP; 2684 ib_spec->action.act = uobj_get_obj_read(flow_action, 2685 UVERBS_OBJECT_FLOW_ACTION, 2686 kern_spec->action.handle, 2687 attrs); 2688 if (!ib_spec->action.act) 2689 return -EINVAL; 2690 ib_spec->action.size = 2691 sizeof(struct ib_flow_spec_action_handle); 2692 flow_resources_add(uflow_res, 2693 IB_FLOW_SPEC_ACTION_HANDLE, 2694 ib_spec->action.act); 2695 uobj_put_obj_read(ib_spec->action.act); 2696 break; 2697 case IB_FLOW_SPEC_ACTION_COUNT: 2698 if (kern_spec->flow_count.size != 2699 sizeof(struct ib_uverbs_flow_spec_action_count)) 2700 return -EINVAL; 2701 ib_spec->flow_count.counters = 2702 uobj_get_obj_read(counters, 2703 UVERBS_OBJECT_COUNTERS, 2704 kern_spec->flow_count.handle, 2705 attrs); 2706 if (!ib_spec->flow_count.counters) 2707 return -EINVAL; 2708 ib_spec->flow_count.size = 2709 sizeof(struct ib_flow_spec_action_count); 2710 flow_resources_add(uflow_res, 2711 IB_FLOW_SPEC_ACTION_COUNT, 2712 ib_spec->flow_count.counters); 2713 uobj_put_obj_read(ib_spec->flow_count.counters); 2714 break; 2715 default: 2716 return -EINVAL; 2717 } 2718 return 0; 2719 } 2720 2721 static ssize_t spec_filter_size(const void *kern_spec_filter, u16 kern_filter_size, 2722 u16 ib_real_filter_sz) 2723 { 2724 /* 2725 * User space filter structures must be 64 bit aligned, otherwise this 2726 * may pass, but we won't handle additional new attributes. 2727 */ 2728 2729 if (kern_filter_size > ib_real_filter_sz) { 2730 if (memchr_inv((const char *)kern_spec_filter + 2731 ib_real_filter_sz, 0, 2732 kern_filter_size - ib_real_filter_sz)) 2733 return -EINVAL; 2734 return ib_real_filter_sz; 2735 } 2736 return kern_filter_size; 2737 } 2738 2739 int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type, 2740 const void *kern_spec_mask, 2741 const void *kern_spec_val, 2742 size_t kern_filter_sz, 2743 union ib_flow_spec *ib_spec) 2744 { 2745 ssize_t actual_filter_sz; 2746 ssize_t ib_filter_sz; 2747 2748 /* User flow spec size must be aligned to 4 bytes */ 2749 if (kern_filter_sz != ALIGN(kern_filter_sz, 4)) 2750 return -EINVAL; 2751 2752 ib_spec->type = type; 2753 2754 if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL)) 2755 return -EINVAL; 2756 2757 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) { 2758 case IB_FLOW_SPEC_ETH: 2759 ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz); 2760 actual_filter_sz = spec_filter_size(kern_spec_mask, 2761 kern_filter_sz, 2762 ib_filter_sz); 2763 if (actual_filter_sz <= 0) 2764 return -EINVAL; 2765 ib_spec->size = sizeof(struct ib_flow_spec_eth); 2766 memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz); 2767 memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz); 2768 break; 2769 case IB_FLOW_SPEC_IPV4: 2770 ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz); 2771 actual_filter_sz = spec_filter_size(kern_spec_mask, 2772 kern_filter_sz, 2773 ib_filter_sz); 2774 if (actual_filter_sz <= 0) 2775 return -EINVAL; 2776 ib_spec->size = sizeof(struct ib_flow_spec_ipv4); 2777 memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz); 2778 memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz); 2779 break; 2780 case IB_FLOW_SPEC_IPV6: 2781 ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz); 2782 actual_filter_sz = spec_filter_size(kern_spec_mask, 2783 kern_filter_sz, 2784 ib_filter_sz); 2785 if (actual_filter_sz <= 0) 2786 return -EINVAL; 2787 ib_spec->size = sizeof(struct ib_flow_spec_ipv6); 2788 memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz); 2789 memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz); 2790 2791 if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) || 2792 (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20)) 2793 return -EINVAL; 2794 break; 2795 case IB_FLOW_SPEC_TCP: 2796 case IB_FLOW_SPEC_UDP: 2797 ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz); 2798 actual_filter_sz = spec_filter_size(kern_spec_mask, 2799 kern_filter_sz, 2800 ib_filter_sz); 2801 if (actual_filter_sz <= 0) 2802 return -EINVAL; 2803 ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp); 2804 memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz); 2805 memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz); 2806 break; 2807 case IB_FLOW_SPEC_VXLAN_TUNNEL: 2808 ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz); 2809 actual_filter_sz = spec_filter_size(kern_spec_mask, 2810 kern_filter_sz, 2811 ib_filter_sz); 2812 if (actual_filter_sz <= 0) 2813 return -EINVAL; 2814 ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel); 2815 memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz); 2816 memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz); 2817 2818 if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) || 2819 (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24)) 2820 return -EINVAL; 2821 break; 2822 case IB_FLOW_SPEC_ESP: 2823 ib_filter_sz = offsetof(struct ib_flow_esp_filter, real_sz); 2824 actual_filter_sz = spec_filter_size(kern_spec_mask, 2825 kern_filter_sz, 2826 ib_filter_sz); 2827 if (actual_filter_sz <= 0) 2828 return -EINVAL; 2829 ib_spec->esp.size = sizeof(struct ib_flow_spec_esp); 2830 memcpy(&ib_spec->esp.val, kern_spec_val, actual_filter_sz); 2831 memcpy(&ib_spec->esp.mask, kern_spec_mask, actual_filter_sz); 2832 break; 2833 case IB_FLOW_SPEC_GRE: 2834 ib_filter_sz = offsetof(struct ib_flow_gre_filter, real_sz); 2835 actual_filter_sz = spec_filter_size(kern_spec_mask, 2836 kern_filter_sz, 2837 ib_filter_sz); 2838 if (actual_filter_sz <= 0) 2839 return -EINVAL; 2840 ib_spec->gre.size = sizeof(struct ib_flow_spec_gre); 2841 memcpy(&ib_spec->gre.val, kern_spec_val, actual_filter_sz); 2842 memcpy(&ib_spec->gre.mask, kern_spec_mask, actual_filter_sz); 2843 break; 2844 case IB_FLOW_SPEC_MPLS: 2845 ib_filter_sz = offsetof(struct ib_flow_mpls_filter, real_sz); 2846 actual_filter_sz = spec_filter_size(kern_spec_mask, 2847 kern_filter_sz, 2848 ib_filter_sz); 2849 if (actual_filter_sz <= 0) 2850 return -EINVAL; 2851 ib_spec->mpls.size = sizeof(struct ib_flow_spec_mpls); 2852 memcpy(&ib_spec->mpls.val, kern_spec_val, actual_filter_sz); 2853 memcpy(&ib_spec->mpls.mask, kern_spec_mask, actual_filter_sz); 2854 break; 2855 default: 2856 return -EINVAL; 2857 } 2858 return 0; 2859 } 2860 2861 static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec, 2862 union ib_flow_spec *ib_spec) 2863 { 2864 size_t kern_filter_sz; 2865 void *kern_spec_mask; 2866 void *kern_spec_val; 2867 2868 if (kern_spec->hdr.size < sizeof(struct ib_uverbs_flow_spec_hdr)) 2869 return -EINVAL; 2870 kern_filter_sz = kern_spec->hdr.size - sizeof(struct ib_uverbs_flow_spec_hdr); 2871 kern_filter_sz /= 2; 2872 2873 kern_spec_val = (u8 *)kern_spec + 2874 sizeof(struct ib_uverbs_flow_spec_hdr); 2875 kern_spec_mask = (u8 *)kern_spec_val + kern_filter_sz; 2876 2877 return ib_uverbs_kern_spec_to_ib_spec_filter(kern_spec->type, 2878 kern_spec_mask, 2879 kern_spec_val, 2880 kern_filter_sz, ib_spec); 2881 } 2882 2883 static int kern_spec_to_ib_spec(struct uverbs_attr_bundle *attrs, 2884 struct ib_uverbs_flow_spec *kern_spec, 2885 union ib_flow_spec *ib_spec, 2886 struct ib_uflow_resources *uflow_res) 2887 { 2888 if (kern_spec->reserved) 2889 return -EINVAL; 2890 2891 if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG) 2892 return kern_spec_to_ib_spec_action(attrs, kern_spec, ib_spec, 2893 uflow_res); 2894 else 2895 return kern_spec_to_ib_spec_filter(kern_spec, ib_spec); 2896 } 2897 2898 static int ib_uverbs_ex_create_wq(struct uverbs_attr_bundle *attrs) 2899 { 2900 struct ib_uverbs_ex_create_wq cmd; 2901 struct ib_uverbs_ex_create_wq_resp resp = {}; 2902 struct ib_uwq_object *obj; 2903 int err = 0; 2904 struct ib_cq *cq; 2905 struct ib_pd *pd; 2906 struct ib_wq *wq; 2907 struct ib_wq_init_attr wq_init_attr = {}; 2908 struct ib_device *ib_dev; 2909 2910 err = uverbs_request(attrs, &cmd, sizeof(cmd)); 2911 if (err) 2912 return err; 2913 2914 if (cmd.comp_mask) 2915 return -EOPNOTSUPP; 2916 2917 obj = (struct ib_uwq_object *)uobj_alloc(UVERBS_OBJECT_WQ, attrs, 2918 &ib_dev); 2919 if (IS_ERR(obj)) 2920 return PTR_ERR(obj); 2921 2922 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); 2923 if (!pd) { 2924 err = -EINVAL; 2925 goto err_uobj; 2926 } 2927 2928 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 2929 if (!cq) { 2930 err = -EINVAL; 2931 goto err_put_pd; 2932 } 2933 2934 wq_init_attr.cq = cq; 2935 wq_init_attr.max_sge = cmd.max_sge; 2936 wq_init_attr.max_wr = cmd.max_wr; 2937 wq_init_attr.wq_context = attrs->ufile; 2938 wq_init_attr.wq_type = cmd.wq_type; 2939 wq_init_attr.event_handler = ib_uverbs_wq_event_handler; 2940 wq_init_attr.create_flags = cmd.create_flags; 2941 INIT_LIST_HEAD(&obj->uevent.event_list); 2942 2943 wq = pd->device->create_wq(pd, &wq_init_attr, &attrs->driver_udata); 2944 if (IS_ERR(wq)) { 2945 err = PTR_ERR(wq); 2946 goto err_put_cq; 2947 } 2948 2949 wq->uobject = obj; 2950 obj->uevent.uobject.object = wq; 2951 wq->wq_type = wq_init_attr.wq_type; 2952 wq->cq = cq; 2953 wq->pd = pd; 2954 wq->device = pd->device; 2955 wq->wq_context = wq_init_attr.wq_context; 2956 atomic_set(&wq->usecnt, 0); 2957 atomic_inc(&pd->usecnt); 2958 atomic_inc(&cq->usecnt); 2959 wq->uobject = obj; 2960 obj->uevent.uobject.object = wq; 2961 2962 memset(&resp, 0, sizeof(resp)); 2963 resp.wq_handle = obj->uevent.uobject.id; 2964 resp.max_sge = wq_init_attr.max_sge; 2965 resp.max_wr = wq_init_attr.max_wr; 2966 resp.wqn = wq->wq_num; 2967 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 2968 err = uverbs_response(attrs, &resp, sizeof(resp)); 2969 if (err) 2970 goto err_copy; 2971 2972 uobj_put_obj_read(pd); 2973 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, 2974 UVERBS_LOOKUP_READ); 2975 rdma_alloc_commit_uobject(&obj->uevent.uobject, attrs); 2976 return 0; 2977 2978 err_copy: 2979 ib_destroy_wq(wq, uverbs_get_cleared_udata(attrs)); 2980 err_put_cq: 2981 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, 2982 UVERBS_LOOKUP_READ); 2983 err_put_pd: 2984 uobj_put_obj_read(pd); 2985 err_uobj: 2986 uobj_alloc_abort(&obj->uevent.uobject, attrs); 2987 2988 return err; 2989 } 2990 2991 static int ib_uverbs_ex_destroy_wq(struct uverbs_attr_bundle *attrs) 2992 { 2993 struct ib_uverbs_ex_destroy_wq cmd; 2994 struct ib_uverbs_ex_destroy_wq_resp resp = {}; 2995 struct ib_uobject *uobj; 2996 struct ib_uwq_object *obj; 2997 int ret; 2998 2999 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3000 if (ret) 3001 return ret; 3002 3003 if (cmd.comp_mask) 3004 return -EOPNOTSUPP; 3005 3006 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 3007 uobj = uobj_get_destroy(UVERBS_OBJECT_WQ, cmd.wq_handle, attrs); 3008 if (IS_ERR(uobj)) 3009 return PTR_ERR(uobj); 3010 3011 obj = container_of(uobj, struct ib_uwq_object, uevent.uobject); 3012 resp.events_reported = obj->uevent.events_reported; 3013 3014 uobj_put_destroy(uobj); 3015 3016 return uverbs_response(attrs, &resp, sizeof(resp)); 3017 } 3018 3019 static int ib_uverbs_ex_modify_wq(struct uverbs_attr_bundle *attrs) 3020 { 3021 struct ib_uverbs_ex_modify_wq cmd; 3022 struct ib_wq *wq; 3023 struct ib_wq_attr wq_attr = {}; 3024 int ret; 3025 3026 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3027 if (ret) 3028 return ret; 3029 3030 if (!cmd.attr_mask) 3031 return -EINVAL; 3032 3033 if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS)) 3034 return -EINVAL; 3035 3036 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, cmd.wq_handle, attrs); 3037 if (!wq) 3038 return -EINVAL; 3039 3040 wq_attr.curr_wq_state = cmd.curr_wq_state; 3041 wq_attr.wq_state = cmd.wq_state; 3042 if (cmd.attr_mask & IB_WQ_FLAGS) { 3043 wq_attr.flags = cmd.flags; 3044 wq_attr.flags_mask = cmd.flags_mask; 3045 } 3046 ret = wq->device->modify_wq(wq, &wq_attr, cmd.attr_mask, 3047 &attrs->driver_udata); 3048 rdma_lookup_put_uobject(&wq->uobject->uevent.uobject, 3049 UVERBS_LOOKUP_READ); 3050 return ret; 3051 } 3052 3053 static int ib_uverbs_ex_create_rwq_ind_table(struct uverbs_attr_bundle *attrs) 3054 { 3055 struct ib_uverbs_ex_create_rwq_ind_table cmd; 3056 struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {}; 3057 struct ib_uobject *uobj; 3058 int err; 3059 struct ib_rwq_ind_table_init_attr init_attr = {}; 3060 struct ib_rwq_ind_table *rwq_ind_tbl; 3061 struct ib_wq **wqs = NULL; 3062 u32 *wqs_handles = NULL; 3063 struct ib_wq *wq = NULL; 3064 int i, j, num_read_wqs; 3065 u32 num_wq_handles; 3066 struct uverbs_req_iter iter; 3067 struct ib_device *ib_dev; 3068 3069 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 3070 if (err) 3071 return err; 3072 3073 if (cmd.comp_mask) 3074 return -EOPNOTSUPP; 3075 3076 if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE) 3077 return -EINVAL; 3078 3079 num_wq_handles = 1 << cmd.log_ind_tbl_size; 3080 wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles), 3081 GFP_KERNEL); 3082 if (!wqs_handles) 3083 return -ENOMEM; 3084 3085 err = uverbs_request_next(&iter, wqs_handles, 3086 num_wq_handles * sizeof(__u32)); 3087 if (err) 3088 goto err_free; 3089 3090 err = uverbs_request_finish(&iter); 3091 if (err) 3092 goto err_free; 3093 3094 wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL); 3095 if (!wqs) { 3096 err = -ENOMEM; 3097 goto err_free; 3098 } 3099 3100 for (num_read_wqs = 0; num_read_wqs < num_wq_handles; 3101 num_read_wqs++) { 3102 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, 3103 wqs_handles[num_read_wqs], attrs); 3104 if (!wq) { 3105 err = -EINVAL; 3106 goto put_wqs; 3107 } 3108 3109 wqs[num_read_wqs] = wq; 3110 } 3111 3112 uobj = uobj_alloc(UVERBS_OBJECT_RWQ_IND_TBL, attrs, &ib_dev); 3113 if (IS_ERR(uobj)) { 3114 err = PTR_ERR(uobj); 3115 goto put_wqs; 3116 } 3117 3118 init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size; 3119 init_attr.ind_tbl = wqs; 3120 3121 rwq_ind_tbl = ib_dev->create_rwq_ind_table(ib_dev, &init_attr, 3122 &attrs->driver_udata); 3123 3124 if (IS_ERR(rwq_ind_tbl)) { 3125 err = PTR_ERR(rwq_ind_tbl); 3126 goto err_uobj; 3127 } 3128 3129 rwq_ind_tbl->ind_tbl = wqs; 3130 rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size; 3131 rwq_ind_tbl->uobject = uobj; 3132 uobj->object = rwq_ind_tbl; 3133 rwq_ind_tbl->device = ib_dev; 3134 atomic_set(&rwq_ind_tbl->usecnt, 0); 3135 3136 for (i = 0; i < num_wq_handles; i++) 3137 atomic_inc(&wqs[i]->usecnt); 3138 3139 resp.ind_tbl_handle = uobj->id; 3140 resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num; 3141 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 3142 3143 err = uverbs_response(attrs, &resp, sizeof(resp)); 3144 if (err) 3145 goto err_copy; 3146 3147 kfree(wqs_handles); 3148 3149 for (j = 0; j < num_read_wqs; j++) 3150 rdma_lookup_put_uobject(&wqs[j]->uobject->uevent.uobject, 3151 UVERBS_LOOKUP_READ); 3152 3153 rdma_alloc_commit_uobject(uobj, attrs); 3154 return 0; 3155 3156 err_copy: 3157 ib_destroy_rwq_ind_table(rwq_ind_tbl); 3158 err_uobj: 3159 uobj_alloc_abort(uobj, attrs); 3160 put_wqs: 3161 for (j = 0; j < num_read_wqs; j++) 3162 rdma_lookup_put_uobject(&wqs[j]->uobject->uevent.uobject, 3163 UVERBS_LOOKUP_READ); 3164 err_free: 3165 kfree(wqs_handles); 3166 kfree(wqs); 3167 return err; 3168 } 3169 3170 static int ib_uverbs_ex_destroy_rwq_ind_table(struct uverbs_attr_bundle *attrs) 3171 { 3172 struct ib_uverbs_ex_destroy_rwq_ind_table cmd; 3173 int ret; 3174 3175 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3176 if (ret) 3177 return ret; 3178 3179 if (cmd.comp_mask) 3180 return -EOPNOTSUPP; 3181 3182 return uobj_perform_destroy(UVERBS_OBJECT_RWQ_IND_TBL, 3183 cmd.ind_tbl_handle, attrs); 3184 } 3185 3186 static int ib_uverbs_ex_create_flow(struct uverbs_attr_bundle *attrs) 3187 { 3188 struct ib_uverbs_create_flow cmd; 3189 struct ib_uverbs_create_flow_resp resp; 3190 struct ib_uobject *uobj; 3191 struct ib_flow *flow_id; 3192 struct ib_uverbs_flow_attr *kern_flow_attr; 3193 struct ib_flow_attr *flow_attr; 3194 struct ib_qp *qp; 3195 struct ib_uflow_resources *uflow_res; 3196 struct ib_uverbs_flow_spec_hdr *kern_spec; 3197 struct uverbs_req_iter iter; 3198 int err; 3199 void *ib_spec; 3200 int i; 3201 struct ib_device *ib_dev; 3202 3203 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); 3204 if (err) 3205 return err; 3206 3207 if (cmd.comp_mask) 3208 return -EINVAL; 3209 3210 if (priv_check(curthread, PRIV_NET_RAW) != 0) 3211 return -EPERM; 3212 3213 if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED) 3214 return -EINVAL; 3215 3216 if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) && 3217 ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) || 3218 (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT))) 3219 return -EINVAL; 3220 3221 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS) 3222 return -EINVAL; 3223 3224 if (cmd.flow_attr.size > 3225 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec))) 3226 return -EINVAL; 3227 3228 if (cmd.flow_attr.reserved[0] || 3229 cmd.flow_attr.reserved[1]) 3230 return -EINVAL; 3231 3232 if (cmd.flow_attr.num_of_specs) { 3233 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size, 3234 GFP_KERNEL); 3235 if (!kern_flow_attr) 3236 return -ENOMEM; 3237 3238 *kern_flow_attr = cmd.flow_attr; 3239 err = uverbs_request_next(&iter, &kern_flow_attr->flow_specs, 3240 cmd.flow_attr.size); 3241 if (err) 3242 goto err_free_attr; 3243 } else { 3244 kern_flow_attr = &cmd.flow_attr; 3245 } 3246 3247 err = uverbs_request_finish(&iter); 3248 if (err) 3249 goto err_free_attr; 3250 3251 uobj = uobj_alloc(UVERBS_OBJECT_FLOW, attrs, &ib_dev); 3252 if (IS_ERR(uobj)) { 3253 err = PTR_ERR(uobj); 3254 goto err_free_attr; 3255 } 3256 3257 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); 3258 if (!qp) { 3259 err = -EINVAL; 3260 goto err_uobj; 3261 } 3262 3263 if (qp->qp_type != IB_QPT_UD && qp->qp_type != IB_QPT_RAW_PACKET) { 3264 err = -EINVAL; 3265 goto err_put; 3266 } 3267 3268 flow_attr = kzalloc(struct_size(flow_attr, flows, 3269 cmd.flow_attr.num_of_specs), GFP_KERNEL); 3270 if (!flow_attr) { 3271 err = -ENOMEM; 3272 goto err_put; 3273 } 3274 uflow_res = flow_resources_alloc(cmd.flow_attr.num_of_specs); 3275 if (!uflow_res) { 3276 err = -ENOMEM; 3277 goto err_free_flow_attr; 3278 } 3279 3280 flow_attr->type = kern_flow_attr->type; 3281 flow_attr->priority = kern_flow_attr->priority; 3282 flow_attr->num_of_specs = kern_flow_attr->num_of_specs; 3283 flow_attr->port = kern_flow_attr->port; 3284 flow_attr->flags = kern_flow_attr->flags; 3285 flow_attr->size = sizeof(*flow_attr); 3286 3287 kern_spec = kern_flow_attr->flow_specs; 3288 ib_spec = flow_attr + 1; 3289 for (i = 0; i < flow_attr->num_of_specs && 3290 cmd.flow_attr.size >= sizeof(*kern_spec) && 3291 cmd.flow_attr.size >= kern_spec->size; 3292 i++) { 3293 err = kern_spec_to_ib_spec( 3294 attrs, (struct ib_uverbs_flow_spec *)kern_spec, 3295 ib_spec, uflow_res); 3296 if (err) 3297 goto err_free; 3298 3299 flow_attr->size += 3300 ((union ib_flow_spec *) ib_spec)->size; 3301 cmd.flow_attr.size -= kern_spec->size; 3302 kern_spec = (struct ib_uverbs_flow_spec_hdr *)((u8 *)kern_spec + kern_spec->size); 3303 ib_spec = (u8 *)ib_spec + ((union ib_flow_spec *) ib_spec)->size; 3304 } 3305 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) { 3306 pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n", 3307 i, cmd.flow_attr.size); 3308 err = -EINVAL; 3309 goto err_free; 3310 } 3311 3312 flow_id = qp->device->create_flow( 3313 qp, flow_attr, IB_FLOW_DOMAIN_USER, &attrs->driver_udata); 3314 3315 if (IS_ERR(flow_id)) { 3316 err = PTR_ERR(flow_id); 3317 goto err_free; 3318 } 3319 3320 ib_set_flow(uobj, flow_id, qp, qp->device, uflow_res); 3321 3322 memset(&resp, 0, sizeof(resp)); 3323 resp.flow_handle = uobj->id; 3324 3325 err = uverbs_response(attrs, &resp, sizeof(resp)); 3326 if (err) 3327 goto err_copy; 3328 3329 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, 3330 UVERBS_LOOKUP_READ); 3331 kfree(flow_attr); 3332 if (cmd.flow_attr.num_of_specs) 3333 kfree(kern_flow_attr); 3334 rdma_alloc_commit_uobject(uobj, attrs); 3335 return 0; 3336 err_copy: 3337 if (!qp->device->destroy_flow(flow_id)) 3338 atomic_dec(&qp->usecnt); 3339 err_free: 3340 ib_uverbs_flow_resources_free(uflow_res); 3341 err_free_flow_attr: 3342 kfree(flow_attr); 3343 err_put: 3344 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, 3345 UVERBS_LOOKUP_READ); 3346 err_uobj: 3347 uobj_alloc_abort(uobj, attrs); 3348 err_free_attr: 3349 if (cmd.flow_attr.num_of_specs) 3350 kfree(kern_flow_attr); 3351 return err; 3352 } 3353 3354 static int ib_uverbs_ex_destroy_flow(struct uverbs_attr_bundle *attrs) 3355 { 3356 struct ib_uverbs_destroy_flow cmd; 3357 int ret; 3358 3359 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3360 if (ret) 3361 return ret; 3362 3363 if (cmd.comp_mask) 3364 return -EINVAL; 3365 3366 return uobj_perform_destroy(UVERBS_OBJECT_FLOW, cmd.flow_handle, attrs); 3367 } 3368 3369 static int __uverbs_create_xsrq(struct uverbs_attr_bundle *attrs, 3370 struct ib_uverbs_create_xsrq *cmd, 3371 struct ib_udata *udata) 3372 { 3373 struct ib_uverbs_create_srq_resp resp; 3374 struct ib_usrq_object *obj; 3375 struct ib_pd *pd; 3376 struct ib_srq *srq; 3377 struct ib_uobject *uninitialized_var(xrcd_uobj); 3378 struct ib_srq_init_attr attr; 3379 int ret; 3380 struct ib_device *ib_dev; 3381 3382 obj = (struct ib_usrq_object *)uobj_alloc(UVERBS_OBJECT_SRQ, attrs, 3383 &ib_dev); 3384 if (IS_ERR(obj)) 3385 return PTR_ERR(obj); 3386 3387 if (cmd->srq_type == IB_SRQT_TM) 3388 attr.ext.tag_matching.max_num_tags = cmd->max_num_tags; 3389 3390 if (cmd->srq_type == IB_SRQT_XRC) { 3391 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->xrcd_handle, 3392 attrs); 3393 if (IS_ERR(xrcd_uobj)) { 3394 ret = -EINVAL; 3395 goto err; 3396 } 3397 3398 attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object; 3399 if (!attr.ext.xrc.xrcd) { 3400 ret = -EINVAL; 3401 goto err_put_xrcd; 3402 } 3403 3404 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); 3405 atomic_inc(&obj->uxrcd->refcnt); 3406 } 3407 3408 if (ib_srq_has_cq(cmd->srq_type)) { 3409 attr.ext.cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, 3410 cmd->cq_handle, attrs); 3411 if (!attr.ext.cq) { 3412 ret = -EINVAL; 3413 goto err_put_xrcd; 3414 } 3415 } 3416 3417 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, attrs); 3418 if (!pd) { 3419 ret = -EINVAL; 3420 goto err_put_cq; 3421 } 3422 3423 attr.event_handler = ib_uverbs_srq_event_handler; 3424 attr.srq_context = attrs->ufile; 3425 attr.srq_type = cmd->srq_type; 3426 attr.attr.max_wr = cmd->max_wr; 3427 attr.attr.max_sge = cmd->max_sge; 3428 attr.attr.srq_limit = cmd->srq_limit; 3429 3430 INIT_LIST_HEAD(&obj->uevent.event_list); 3431 3432 srq = rdma_zalloc_drv_obj(ib_dev, ib_srq); 3433 if (!srq) { 3434 ret = -ENOMEM; 3435 goto err_put; 3436 } 3437 3438 srq->device = pd->device; 3439 srq->pd = pd; 3440 srq->srq_type = cmd->srq_type; 3441 srq->uobject = obj; 3442 srq->event_handler = attr.event_handler; 3443 srq->srq_context = attr.srq_context; 3444 3445 ret = pd->device->create_srq(srq, &attr, udata); 3446 if (ret) 3447 goto err_free; 3448 3449 if (ib_srq_has_cq(cmd->srq_type)) { 3450 srq->ext.cq = attr.ext.cq; 3451 atomic_inc(&attr.ext.cq->usecnt); 3452 } 3453 3454 if (cmd->srq_type == IB_SRQT_XRC) { 3455 srq->ext.xrc.xrcd = attr.ext.xrc.xrcd; 3456 atomic_inc(&attr.ext.xrc.xrcd->usecnt); 3457 } 3458 3459 atomic_inc(&pd->usecnt); 3460 atomic_set(&srq->usecnt, 0); 3461 3462 obj->uevent.uobject.object = srq; 3463 obj->uevent.uobject.user_handle = cmd->user_handle; 3464 3465 memset(&resp, 0, sizeof resp); 3466 resp.srq_handle = obj->uevent.uobject.id; 3467 resp.max_wr = attr.attr.max_wr; 3468 resp.max_sge = attr.attr.max_sge; 3469 if (cmd->srq_type == IB_SRQT_XRC) 3470 resp.srqn = srq->ext.xrc.srq_num; 3471 3472 ret = uverbs_response(attrs, &resp, sizeof(resp)); 3473 if (ret) 3474 goto err_copy; 3475 3476 if (cmd->srq_type == IB_SRQT_XRC) 3477 uobj_put_read(xrcd_uobj); 3478 3479 if (ib_srq_has_cq(cmd->srq_type)) 3480 rdma_lookup_put_uobject(&attr.ext.cq->uobject->uevent.uobject, 3481 UVERBS_LOOKUP_READ); 3482 3483 uobj_put_obj_read(pd); 3484 rdma_alloc_commit_uobject(&obj->uevent.uobject, attrs); 3485 return 0; 3486 3487 err_copy: 3488 ib_destroy_srq_user(srq, uverbs_get_cleared_udata(attrs)); 3489 /* It was released in ib_destroy_srq_user */ 3490 srq = NULL; 3491 err_free: 3492 kfree(srq); 3493 err_put: 3494 uobj_put_obj_read(pd); 3495 3496 err_put_cq: 3497 if (ib_srq_has_cq(cmd->srq_type)) 3498 rdma_lookup_put_uobject(&attr.ext.cq->uobject->uevent.uobject, 3499 UVERBS_LOOKUP_READ); 3500 3501 err_put_xrcd: 3502 if (cmd->srq_type == IB_SRQT_XRC) { 3503 atomic_dec(&obj->uxrcd->refcnt); 3504 uobj_put_read(xrcd_uobj); 3505 } 3506 3507 err: 3508 uobj_alloc_abort(&obj->uevent.uobject, attrs); 3509 return ret; 3510 } 3511 3512 static int ib_uverbs_create_srq(struct uverbs_attr_bundle *attrs) 3513 { 3514 struct ib_uverbs_create_srq cmd; 3515 struct ib_uverbs_create_xsrq xcmd; 3516 int ret; 3517 3518 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3519 if (ret) 3520 return ret; 3521 3522 memset(&xcmd, 0, sizeof(xcmd)); 3523 xcmd.response = cmd.response; 3524 xcmd.user_handle = cmd.user_handle; 3525 xcmd.srq_type = IB_SRQT_BASIC; 3526 xcmd.pd_handle = cmd.pd_handle; 3527 xcmd.max_wr = cmd.max_wr; 3528 xcmd.max_sge = cmd.max_sge; 3529 xcmd.srq_limit = cmd.srq_limit; 3530 3531 return __uverbs_create_xsrq(attrs, &xcmd, &attrs->driver_udata); 3532 } 3533 3534 static int ib_uverbs_create_xsrq(struct uverbs_attr_bundle *attrs) 3535 { 3536 struct ib_uverbs_create_xsrq cmd; 3537 int ret; 3538 3539 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3540 if (ret) 3541 return ret; 3542 3543 return __uverbs_create_xsrq(attrs, &cmd, &attrs->driver_udata); 3544 } 3545 3546 static int ib_uverbs_modify_srq(struct uverbs_attr_bundle *attrs) 3547 { 3548 struct ib_uverbs_modify_srq cmd; 3549 struct ib_srq *srq; 3550 struct ib_srq_attr attr; 3551 int ret; 3552 3553 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3554 if (ret) 3555 return ret; 3556 3557 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 3558 if (!srq) 3559 return -EINVAL; 3560 3561 attr.max_wr = cmd.max_wr; 3562 attr.srq_limit = cmd.srq_limit; 3563 3564 ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, 3565 &attrs->driver_udata); 3566 3567 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, 3568 UVERBS_LOOKUP_READ); 3569 3570 return ret; 3571 } 3572 3573 static int ib_uverbs_query_srq(struct uverbs_attr_bundle *attrs) 3574 { 3575 struct ib_uverbs_query_srq cmd; 3576 struct ib_uverbs_query_srq_resp resp; 3577 struct ib_srq_attr attr; 3578 struct ib_srq *srq; 3579 int ret; 3580 3581 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3582 if (ret) 3583 return ret; 3584 3585 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 3586 if (!srq) 3587 return -EINVAL; 3588 3589 ret = ib_query_srq(srq, &attr); 3590 3591 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, 3592 UVERBS_LOOKUP_READ); 3593 3594 if (ret) 3595 return ret; 3596 3597 memset(&resp, 0, sizeof resp); 3598 3599 resp.max_wr = attr.max_wr; 3600 resp.max_sge = attr.max_sge; 3601 resp.srq_limit = attr.srq_limit; 3602 3603 return uverbs_response(attrs, &resp, sizeof(resp)); 3604 } 3605 3606 static int ib_uverbs_destroy_srq(struct uverbs_attr_bundle *attrs) 3607 { 3608 struct ib_uverbs_destroy_srq cmd; 3609 struct ib_uverbs_destroy_srq_resp resp; 3610 struct ib_uobject *uobj; 3611 struct ib_uevent_object *obj; 3612 int ret; 3613 3614 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3615 if (ret) 3616 return ret; 3617 3618 uobj = uobj_get_destroy(UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); 3619 if (IS_ERR(uobj)) 3620 return PTR_ERR(uobj); 3621 3622 obj = container_of(uobj, struct ib_uevent_object, uobject); 3623 memset(&resp, 0, sizeof(resp)); 3624 resp.events_reported = obj->events_reported; 3625 3626 uobj_put_destroy(uobj); 3627 3628 return uverbs_response(attrs, &resp, sizeof(resp)); 3629 } 3630 3631 static int ib_uverbs_ex_query_device(struct uverbs_attr_bundle *attrs) 3632 { 3633 struct ib_uverbs_ex_query_device_resp resp = {}; 3634 struct ib_uverbs_ex_query_device cmd; 3635 struct ib_device_attr attr = {0}; 3636 struct ib_ucontext *ucontext; 3637 struct ib_device *ib_dev; 3638 int err; 3639 3640 ucontext = ib_uverbs_get_ucontext(attrs); 3641 if (IS_ERR(ucontext)) 3642 return PTR_ERR(ucontext); 3643 ib_dev = ucontext->device; 3644 3645 err = uverbs_request(attrs, &cmd, sizeof(cmd)); 3646 if (err) 3647 return err; 3648 3649 if (cmd.comp_mask) 3650 return -EINVAL; 3651 3652 if (cmd.reserved) 3653 return -EINVAL; 3654 3655 err = ib_dev->query_device(ib_dev, &attr, &attrs->driver_udata); 3656 if (err) 3657 return err; 3658 3659 copy_query_dev_fields(ucontext, &resp.base, &attr); 3660 3661 resp.odp_caps.general_caps = attr.odp_caps.general_caps; 3662 resp.odp_caps.per_transport_caps.rc_odp_caps = 3663 attr.odp_caps.per_transport_caps.rc_odp_caps; 3664 resp.odp_caps.per_transport_caps.uc_odp_caps = 3665 attr.odp_caps.per_transport_caps.uc_odp_caps; 3666 resp.odp_caps.per_transport_caps.ud_odp_caps = 3667 attr.odp_caps.per_transport_caps.ud_odp_caps; 3668 resp.xrc_odp_caps = attr.odp_caps.per_transport_caps.xrc_odp_caps; 3669 3670 resp.timestamp_mask = attr.timestamp_mask; 3671 resp.hca_core_clock = attr.hca_core_clock; 3672 resp.device_cap_flags_ex = attr.device_cap_flags; 3673 resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts; 3674 resp.rss_caps.max_rwq_indirection_tables = 3675 attr.rss_caps.max_rwq_indirection_tables; 3676 resp.rss_caps.max_rwq_indirection_table_size = 3677 attr.rss_caps.max_rwq_indirection_table_size; 3678 resp.max_wq_type_rq = attr.max_wq_type_rq; 3679 resp.raw_packet_caps = attr.raw_packet_caps; 3680 resp.tm_caps.max_rndv_hdr_size = attr.tm_caps.max_rndv_hdr_size; 3681 resp.tm_caps.max_num_tags = attr.tm_caps.max_num_tags; 3682 resp.tm_caps.max_ops = attr.tm_caps.max_ops; 3683 resp.tm_caps.max_sge = attr.tm_caps.max_sge; 3684 resp.tm_caps.flags = attr.tm_caps.flags; 3685 resp.cq_moderation_caps.max_cq_moderation_count = 3686 attr.cq_caps.max_cq_moderation_count; 3687 resp.cq_moderation_caps.max_cq_moderation_period = 3688 attr.cq_caps.max_cq_moderation_period; 3689 resp.max_dm_size = attr.max_dm_size; 3690 resp.response_length = uverbs_response_length(attrs, sizeof(resp)); 3691 3692 return uverbs_response(attrs, &resp, sizeof(resp)); 3693 } 3694 3695 static int ib_uverbs_ex_modify_cq(struct uverbs_attr_bundle *attrs) 3696 { 3697 struct ib_uverbs_ex_modify_cq cmd; 3698 struct ib_cq *cq; 3699 int ret; 3700 3701 ret = uverbs_request(attrs, &cmd, sizeof(cmd)); 3702 if (ret) 3703 return ret; 3704 3705 if (!cmd.attr_mask || cmd.reserved) 3706 return -EINVAL; 3707 3708 if (cmd.attr_mask > IB_CQ_MODERATE) 3709 return -EOPNOTSUPP; 3710 3711 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); 3712 if (!cq) 3713 return -EINVAL; 3714 3715 ret = ib_modify_cq(cq, cmd.attr.cq_count, cmd.attr.cq_period); 3716 3717 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, 3718 UVERBS_LOOKUP_READ); 3719 return ret; 3720 } 3721 3722 /* 3723 * Describe the input structs for write(). Some write methods have an input 3724 * only struct, most have an input and output. If the struct has an output then 3725 * the 'response' u64 must be the first field in the request structure. 3726 * 3727 * If udata is present then both the request and response structs have a 3728 * trailing driver_data flex array. In this case the size of the base struct 3729 * cannot be changed. 3730 */ 3731 #define UAPI_DEF_WRITE_IO(req, resp) \ 3732 .write.has_resp = 1 + \ 3733 BUILD_BUG_ON_ZERO(offsetof(req, response) != 0) + \ 3734 BUILD_BUG_ON_ZERO(sizeof(((req *)0)->response) != \ 3735 sizeof(u64)), \ 3736 .write.req_size = sizeof(req), .write.resp_size = sizeof(resp) 3737 3738 #define UAPI_DEF_WRITE_I(req) .write.req_size = sizeof(req) 3739 3740 #define UAPI_DEF_WRITE_UDATA_IO(req, resp) \ 3741 UAPI_DEF_WRITE_IO(req, resp), \ 3742 .write.has_udata = \ 3743 1 + \ 3744 BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \ 3745 sizeof(req)) + \ 3746 BUILD_BUG_ON_ZERO(offsetof(resp, driver_data) != \ 3747 sizeof(resp)) 3748 3749 #define UAPI_DEF_WRITE_UDATA_I(req) \ 3750 UAPI_DEF_WRITE_I(req), \ 3751 .write.has_udata = \ 3752 1 + BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \ 3753 sizeof(req)) 3754 3755 /* 3756 * The _EX versions are for use with WRITE_EX and allow the last struct member 3757 * to be specified. Buffers that do not include that member will be rejected. 3758 */ 3759 #define UAPI_DEF_WRITE_IO_EX(req, req_last_member, resp, resp_last_member) \ 3760 .write.has_resp = 1, \ 3761 .write.req_size = offsetofend(req, req_last_member), \ 3762 .write.resp_size = offsetofend(resp, resp_last_member) 3763 3764 #define UAPI_DEF_WRITE_I_EX(req, req_last_member) \ 3765 .write.req_size = offsetofend(req, req_last_member) 3766 3767 const struct uapi_definition uverbs_def_write_intf[] = { 3768 DECLARE_UVERBS_OBJECT( 3769 UVERBS_OBJECT_AH, 3770 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_AH, 3771 ib_uverbs_create_ah, 3772 UAPI_DEF_WRITE_UDATA_IO( 3773 struct ib_uverbs_create_ah, 3774 struct ib_uverbs_create_ah_resp), 3775 UAPI_DEF_METHOD_NEEDS_FN(create_ah)), 3776 DECLARE_UVERBS_WRITE( 3777 IB_USER_VERBS_CMD_DESTROY_AH, 3778 ib_uverbs_destroy_ah, 3779 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_ah), 3780 UAPI_DEF_METHOD_NEEDS_FN(destroy_ah))), 3781 3782 DECLARE_UVERBS_OBJECT( 3783 UVERBS_OBJECT_COMP_CHANNEL, 3784 DECLARE_UVERBS_WRITE( 3785 IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL, 3786 ib_uverbs_create_comp_channel, 3787 UAPI_DEF_WRITE_IO( 3788 struct ib_uverbs_create_comp_channel, 3789 struct ib_uverbs_create_comp_channel_resp))), 3790 3791 DECLARE_UVERBS_OBJECT( 3792 UVERBS_OBJECT_CQ, 3793 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_CQ, 3794 ib_uverbs_create_cq, 3795 UAPI_DEF_WRITE_UDATA_IO( 3796 struct ib_uverbs_create_cq, 3797 struct ib_uverbs_create_cq_resp), 3798 UAPI_DEF_METHOD_NEEDS_FN(create_cq)), 3799 DECLARE_UVERBS_WRITE( 3800 IB_USER_VERBS_CMD_DESTROY_CQ, 3801 ib_uverbs_destroy_cq, 3802 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_cq, 3803 struct ib_uverbs_destroy_cq_resp), 3804 UAPI_DEF_METHOD_NEEDS_FN(destroy_cq)), 3805 DECLARE_UVERBS_WRITE( 3806 IB_USER_VERBS_CMD_POLL_CQ, 3807 ib_uverbs_poll_cq, 3808 UAPI_DEF_WRITE_IO(struct ib_uverbs_poll_cq, 3809 struct ib_uverbs_poll_cq_resp), 3810 UAPI_DEF_METHOD_NEEDS_FN(poll_cq)), 3811 DECLARE_UVERBS_WRITE( 3812 IB_USER_VERBS_CMD_REQ_NOTIFY_CQ, 3813 ib_uverbs_req_notify_cq, 3814 UAPI_DEF_WRITE_I(struct ib_uverbs_req_notify_cq), 3815 UAPI_DEF_METHOD_NEEDS_FN(req_notify_cq)), 3816 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_RESIZE_CQ, 3817 ib_uverbs_resize_cq, 3818 UAPI_DEF_WRITE_UDATA_IO( 3819 struct ib_uverbs_resize_cq, 3820 struct ib_uverbs_resize_cq_resp), 3821 UAPI_DEF_METHOD_NEEDS_FN(resize_cq)), 3822 DECLARE_UVERBS_WRITE_EX( 3823 IB_USER_VERBS_EX_CMD_CREATE_CQ, 3824 ib_uverbs_ex_create_cq, 3825 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_cq, 3826 reserved, 3827 struct ib_uverbs_ex_create_cq_resp, 3828 response_length), 3829 UAPI_DEF_METHOD_NEEDS_FN(create_cq)), 3830 DECLARE_UVERBS_WRITE_EX( 3831 IB_USER_VERBS_EX_CMD_MODIFY_CQ, 3832 ib_uverbs_ex_modify_cq, 3833 UAPI_DEF_WRITE_I(struct ib_uverbs_ex_modify_cq), 3834 UAPI_DEF_METHOD_NEEDS_FN(create_cq))), 3835 3836 DECLARE_UVERBS_OBJECT( 3837 UVERBS_OBJECT_DEVICE, 3838 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_GET_CONTEXT, 3839 ib_uverbs_get_context, 3840 UAPI_DEF_WRITE_UDATA_IO( 3841 struct ib_uverbs_get_context, 3842 struct ib_uverbs_get_context_resp)), 3843 DECLARE_UVERBS_WRITE( 3844 IB_USER_VERBS_CMD_QUERY_DEVICE, 3845 ib_uverbs_query_device, 3846 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_device, 3847 struct ib_uverbs_query_device_resp)), 3848 DECLARE_UVERBS_WRITE( 3849 IB_USER_VERBS_CMD_QUERY_PORT, 3850 ib_uverbs_query_port, 3851 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_port, 3852 struct ib_uverbs_query_port_resp), 3853 UAPI_DEF_METHOD_NEEDS_FN(query_port)), 3854 DECLARE_UVERBS_WRITE_EX( 3855 IB_USER_VERBS_EX_CMD_QUERY_DEVICE, 3856 ib_uverbs_ex_query_device, 3857 UAPI_DEF_WRITE_IO_EX( 3858 struct ib_uverbs_ex_query_device, 3859 reserved, 3860 struct ib_uverbs_ex_query_device_resp, 3861 response_length), 3862 UAPI_DEF_METHOD_NEEDS_FN(query_device)), 3863 UAPI_DEF_OBJ_NEEDS_FN(alloc_ucontext), 3864 UAPI_DEF_OBJ_NEEDS_FN(dealloc_ucontext)), 3865 3866 DECLARE_UVERBS_OBJECT( 3867 UVERBS_OBJECT_FLOW, 3868 DECLARE_UVERBS_WRITE_EX( 3869 IB_USER_VERBS_EX_CMD_CREATE_FLOW, 3870 ib_uverbs_ex_create_flow, 3871 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_create_flow, 3872 flow_attr, 3873 struct ib_uverbs_create_flow_resp, 3874 flow_handle), 3875 UAPI_DEF_METHOD_NEEDS_FN(create_flow)), 3876 DECLARE_UVERBS_WRITE_EX( 3877 IB_USER_VERBS_EX_CMD_DESTROY_FLOW, 3878 ib_uverbs_ex_destroy_flow, 3879 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_flow), 3880 UAPI_DEF_METHOD_NEEDS_FN(destroy_flow))), 3881 3882 DECLARE_UVERBS_OBJECT( 3883 UVERBS_OBJECT_MR, 3884 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_DEREG_MR, 3885 ib_uverbs_dereg_mr, 3886 UAPI_DEF_WRITE_I(struct ib_uverbs_dereg_mr), 3887 UAPI_DEF_METHOD_NEEDS_FN(dereg_mr)), 3888 DECLARE_UVERBS_WRITE( 3889 IB_USER_VERBS_CMD_REG_MR, 3890 ib_uverbs_reg_mr, 3891 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_reg_mr, 3892 struct ib_uverbs_reg_mr_resp), 3893 UAPI_DEF_METHOD_NEEDS_FN(reg_user_mr)), 3894 DECLARE_UVERBS_WRITE( 3895 IB_USER_VERBS_CMD_REREG_MR, 3896 ib_uverbs_rereg_mr, 3897 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_rereg_mr, 3898 struct ib_uverbs_rereg_mr_resp), 3899 UAPI_DEF_METHOD_NEEDS_FN(rereg_user_mr))), 3900 3901 DECLARE_UVERBS_OBJECT( 3902 UVERBS_OBJECT_MW, 3903 DECLARE_UVERBS_WRITE( 3904 IB_USER_VERBS_CMD_ALLOC_MW, 3905 ib_uverbs_alloc_mw, 3906 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_mw, 3907 struct ib_uverbs_alloc_mw_resp), 3908 UAPI_DEF_METHOD_NEEDS_FN(alloc_mw)), 3909 DECLARE_UVERBS_WRITE( 3910 IB_USER_VERBS_CMD_DEALLOC_MW, 3911 ib_uverbs_dealloc_mw, 3912 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_mw), 3913 UAPI_DEF_METHOD_NEEDS_FN(dealloc_mw))), 3914 3915 DECLARE_UVERBS_OBJECT( 3916 UVERBS_OBJECT_PD, 3917 DECLARE_UVERBS_WRITE( 3918 IB_USER_VERBS_CMD_ALLOC_PD, 3919 ib_uverbs_alloc_pd, 3920 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_pd, 3921 struct ib_uverbs_alloc_pd_resp), 3922 UAPI_DEF_METHOD_NEEDS_FN(alloc_pd)), 3923 DECLARE_UVERBS_WRITE( 3924 IB_USER_VERBS_CMD_DEALLOC_PD, 3925 ib_uverbs_dealloc_pd, 3926 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_pd), 3927 UAPI_DEF_METHOD_NEEDS_FN(dealloc_pd))), 3928 3929 DECLARE_UVERBS_OBJECT( 3930 UVERBS_OBJECT_QP, 3931 DECLARE_UVERBS_WRITE( 3932 IB_USER_VERBS_CMD_ATTACH_MCAST, 3933 ib_uverbs_attach_mcast, 3934 UAPI_DEF_WRITE_I(struct ib_uverbs_attach_mcast), 3935 UAPI_DEF_METHOD_NEEDS_FN(attach_mcast), 3936 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)), 3937 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_QP, 3938 ib_uverbs_create_qp, 3939 UAPI_DEF_WRITE_UDATA_IO( 3940 struct ib_uverbs_create_qp, 3941 struct ib_uverbs_create_qp_resp), 3942 UAPI_DEF_METHOD_NEEDS_FN(create_qp)), 3943 DECLARE_UVERBS_WRITE( 3944 IB_USER_VERBS_CMD_DESTROY_QP, 3945 ib_uverbs_destroy_qp, 3946 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_qp, 3947 struct ib_uverbs_destroy_qp_resp), 3948 UAPI_DEF_METHOD_NEEDS_FN(destroy_qp)), 3949 DECLARE_UVERBS_WRITE( 3950 IB_USER_VERBS_CMD_DETACH_MCAST, 3951 ib_uverbs_detach_mcast, 3952 UAPI_DEF_WRITE_I(struct ib_uverbs_detach_mcast), 3953 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)), 3954 DECLARE_UVERBS_WRITE( 3955 IB_USER_VERBS_CMD_MODIFY_QP, 3956 ib_uverbs_modify_qp, 3957 UAPI_DEF_WRITE_I(struct ib_uverbs_modify_qp), 3958 UAPI_DEF_METHOD_NEEDS_FN(modify_qp)), 3959 DECLARE_UVERBS_WRITE( 3960 IB_USER_VERBS_CMD_POST_RECV, 3961 ib_uverbs_post_recv, 3962 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_recv, 3963 struct ib_uverbs_post_recv_resp), 3964 UAPI_DEF_METHOD_NEEDS_FN(post_recv)), 3965 DECLARE_UVERBS_WRITE( 3966 IB_USER_VERBS_CMD_POST_SEND, 3967 ib_uverbs_post_send, 3968 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_send, 3969 struct ib_uverbs_post_send_resp), 3970 UAPI_DEF_METHOD_NEEDS_FN(post_send)), 3971 DECLARE_UVERBS_WRITE( 3972 IB_USER_VERBS_CMD_QUERY_QP, 3973 ib_uverbs_query_qp, 3974 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_qp, 3975 struct ib_uverbs_query_qp_resp), 3976 UAPI_DEF_METHOD_NEEDS_FN(query_qp)), 3977 DECLARE_UVERBS_WRITE_EX( 3978 IB_USER_VERBS_EX_CMD_CREATE_QP, 3979 ib_uverbs_ex_create_qp, 3980 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_qp, 3981 comp_mask, 3982 struct ib_uverbs_ex_create_qp_resp, 3983 response_length), 3984 UAPI_DEF_METHOD_NEEDS_FN(create_qp)), 3985 DECLARE_UVERBS_WRITE_EX( 3986 IB_USER_VERBS_EX_CMD_MODIFY_QP, 3987 ib_uverbs_ex_modify_qp, 3988 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_modify_qp, 3989 base, 3990 struct ib_uverbs_ex_modify_qp_resp, 3991 response_length), 3992 UAPI_DEF_METHOD_NEEDS_FN(modify_qp))), 3993 3994 DECLARE_UVERBS_OBJECT( 3995 UVERBS_OBJECT_RWQ_IND_TBL, 3996 DECLARE_UVERBS_WRITE_EX( 3997 IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL, 3998 ib_uverbs_ex_create_rwq_ind_table, 3999 UAPI_DEF_WRITE_IO_EX( 4000 struct ib_uverbs_ex_create_rwq_ind_table, 4001 log_ind_tbl_size, 4002 struct ib_uverbs_ex_create_rwq_ind_table_resp, 4003 ind_tbl_num), 4004 UAPI_DEF_METHOD_NEEDS_FN(create_rwq_ind_table)), 4005 DECLARE_UVERBS_WRITE_EX( 4006 IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL, 4007 ib_uverbs_ex_destroy_rwq_ind_table, 4008 UAPI_DEF_WRITE_I( 4009 struct ib_uverbs_ex_destroy_rwq_ind_table), 4010 UAPI_DEF_METHOD_NEEDS_FN(destroy_rwq_ind_table))), 4011 4012 DECLARE_UVERBS_OBJECT( 4013 UVERBS_OBJECT_WQ, 4014 DECLARE_UVERBS_WRITE_EX( 4015 IB_USER_VERBS_EX_CMD_CREATE_WQ, 4016 ib_uverbs_ex_create_wq, 4017 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_wq, 4018 max_sge, 4019 struct ib_uverbs_ex_create_wq_resp, 4020 wqn), 4021 UAPI_DEF_METHOD_NEEDS_FN(create_wq)), 4022 DECLARE_UVERBS_WRITE_EX( 4023 IB_USER_VERBS_EX_CMD_DESTROY_WQ, 4024 ib_uverbs_ex_destroy_wq, 4025 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_destroy_wq, 4026 wq_handle, 4027 struct ib_uverbs_ex_destroy_wq_resp, 4028 reserved), 4029 UAPI_DEF_METHOD_NEEDS_FN(destroy_wq)), 4030 DECLARE_UVERBS_WRITE_EX( 4031 IB_USER_VERBS_EX_CMD_MODIFY_WQ, 4032 ib_uverbs_ex_modify_wq, 4033 UAPI_DEF_WRITE_I_EX(struct ib_uverbs_ex_modify_wq, 4034 curr_wq_state), 4035 UAPI_DEF_METHOD_NEEDS_FN(modify_wq))), 4036 4037 DECLARE_UVERBS_OBJECT( 4038 UVERBS_OBJECT_SRQ, 4039 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_SRQ, 4040 ib_uverbs_create_srq, 4041 UAPI_DEF_WRITE_UDATA_IO( 4042 struct ib_uverbs_create_srq, 4043 struct ib_uverbs_create_srq_resp), 4044 UAPI_DEF_METHOD_NEEDS_FN(create_srq)), 4045 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_XSRQ, 4046 ib_uverbs_create_xsrq, 4047 UAPI_DEF_WRITE_UDATA_IO( 4048 struct ib_uverbs_create_xsrq, 4049 struct ib_uverbs_create_srq_resp), 4050 UAPI_DEF_METHOD_NEEDS_FN(create_srq)), 4051 DECLARE_UVERBS_WRITE( 4052 IB_USER_VERBS_CMD_DESTROY_SRQ, 4053 ib_uverbs_destroy_srq, 4054 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_srq, 4055 struct ib_uverbs_destroy_srq_resp), 4056 UAPI_DEF_METHOD_NEEDS_FN(destroy_srq)), 4057 DECLARE_UVERBS_WRITE( 4058 IB_USER_VERBS_CMD_MODIFY_SRQ, 4059 ib_uverbs_modify_srq, 4060 UAPI_DEF_WRITE_UDATA_I(struct ib_uverbs_modify_srq), 4061 UAPI_DEF_METHOD_NEEDS_FN(modify_srq)), 4062 DECLARE_UVERBS_WRITE( 4063 IB_USER_VERBS_CMD_POST_SRQ_RECV, 4064 ib_uverbs_post_srq_recv, 4065 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_srq_recv, 4066 struct ib_uverbs_post_srq_recv_resp), 4067 UAPI_DEF_METHOD_NEEDS_FN(post_srq_recv)), 4068 DECLARE_UVERBS_WRITE( 4069 IB_USER_VERBS_CMD_QUERY_SRQ, 4070 ib_uverbs_query_srq, 4071 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_srq, 4072 struct ib_uverbs_query_srq_resp), 4073 UAPI_DEF_METHOD_NEEDS_FN(query_srq))), 4074 4075 DECLARE_UVERBS_OBJECT( 4076 UVERBS_OBJECT_XRCD, 4077 DECLARE_UVERBS_WRITE( 4078 IB_USER_VERBS_CMD_CLOSE_XRCD, 4079 ib_uverbs_close_xrcd, 4080 UAPI_DEF_WRITE_I(struct ib_uverbs_close_xrcd), 4081 UAPI_DEF_METHOD_NEEDS_FN(dealloc_xrcd)), 4082 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_QP, 4083 ib_uverbs_open_qp, 4084 UAPI_DEF_WRITE_UDATA_IO( 4085 struct ib_uverbs_open_qp, 4086 struct ib_uverbs_create_qp_resp)), 4087 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_XRCD, 4088 ib_uverbs_open_xrcd, 4089 UAPI_DEF_WRITE_UDATA_IO( 4090 struct ib_uverbs_open_xrcd, 4091 struct ib_uverbs_open_xrcd_resp), 4092 UAPI_DEF_METHOD_NEEDS_FN(alloc_xrcd))), 4093 4094 {}, 4095 }; 4096