1 /* 2 * Copyright (c) 2005 Topspin Communications. All rights reserved. 3 * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved. 4 * Copyright (c) 2005 PathScale, Inc. All rights reserved. 5 * Copyright (c) 2006 Mellanox Technologies. All rights reserved. 6 * 7 * This software is available to you under a choice of one of two 8 * licenses. You may choose to be licensed under the terms of the GNU 9 * General Public License (GPL) Version 2, available from the file 10 * COPYING in the main directory of this source tree, or the 11 * OpenIB.org BSD license below: 12 * 13 * Redistribution and use in source and binary forms, with or 14 * without modification, are permitted provided that the following 15 * conditions are met: 16 * 17 * - Redistributions of source code must retain the above 18 * copyright notice, this list of conditions and the following 19 * disclaimer. 20 * 21 * - Redistributions in binary form must reproduce the above 22 * copyright notice, this list of conditions and the following 23 * disclaimer in the documentation and/or other materials 24 * provided with the distribution. 25 * 26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 33 * SOFTWARE. 34 */ 35 36 #include <linux/file.h> 37 #include <linux/fs.h> 38 #include <linux/slab.h> 39 #include <linux/sched.h> 40 41 #include <linux/uaccess.h> 42 43 #include <rdma/uverbs_types.h> 44 #include <rdma/uverbs_std_types.h> 45 #include "rdma_core.h" 46 47 #include "uverbs.h" 48 #include "core_priv.h" 49 50 static struct ib_uverbs_completion_event_file * 51 ib_uverbs_lookup_comp_file(int fd, struct ib_ucontext *context) 52 { 53 struct ib_uobject *uobj = uobj_get_read(uobj_get_type(comp_channel), 54 fd, context); 55 struct ib_uobject_file *uobj_file; 56 57 if (IS_ERR(uobj)) 58 return (void *)uobj; 59 60 uverbs_uobject_get(uobj); 61 uobj_put_read(uobj); 62 63 uobj_file = container_of(uobj, struct ib_uobject_file, uobj); 64 return container_of(uobj_file, struct ib_uverbs_completion_event_file, 65 uobj_file); 66 } 67 68 ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, 69 struct ib_device *ib_dev, 70 const char __user *buf, 71 int in_len, int out_len) 72 { 73 struct ib_uverbs_get_context cmd; 74 struct ib_uverbs_get_context_resp resp; 75 struct ib_udata udata; 76 struct ib_ucontext *ucontext; 77 struct file *filp; 78 struct ib_rdmacg_object cg_obj; 79 int ret; 80 81 if (out_len < sizeof resp) 82 return -ENOSPC; 83 84 if (copy_from_user(&cmd, buf, sizeof cmd)) 85 return -EFAULT; 86 87 mutex_lock(&file->mutex); 88 89 if (file->ucontext) { 90 ret = -EINVAL; 91 goto err; 92 } 93 94 ib_uverbs_init_udata(&udata, buf + sizeof(cmd), 95 u64_to_user_ptr(cmd.response) + sizeof(resp), 96 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), 97 out_len - sizeof(resp)); 98 99 ret = ib_rdmacg_try_charge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE); 100 if (ret) 101 goto err; 102 103 ucontext = ib_dev->alloc_ucontext(ib_dev, &udata); 104 if (IS_ERR(ucontext)) { 105 ret = PTR_ERR(ucontext); 106 goto err_alloc; 107 } 108 109 ucontext->device = ib_dev; 110 ucontext->cg_obj = cg_obj; 111 /* ufile is required when some objects are released */ 112 ucontext->ufile = file; 113 uverbs_initialize_ucontext(ucontext); 114 115 rcu_read_lock(); 116 ucontext->tgid = get_task_pid(current->group_leader, PIDTYPE_PID); 117 rcu_read_unlock(); 118 ucontext->closing = 0; 119 120 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING 121 ucontext->umem_tree = RB_ROOT_CACHED; 122 init_rwsem(&ucontext->umem_rwsem); 123 ucontext->odp_mrs_count = 0; 124 INIT_LIST_HEAD(&ucontext->no_private_counters); 125 126 if (!(ib_dev->attrs.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING)) 127 ucontext->invalidate_range = NULL; 128 129 #endif 130 131 resp.num_comp_vectors = file->device->num_comp_vectors; 132 133 ret = get_unused_fd_flags(O_CLOEXEC); 134 if (ret < 0) 135 goto err_free; 136 resp.async_fd = ret; 137 138 filp = ib_uverbs_alloc_async_event_file(file, ib_dev); 139 if (IS_ERR(filp)) { 140 ret = PTR_ERR(filp); 141 goto err_fd; 142 } 143 144 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) { 145 ret = -EFAULT; 146 goto err_file; 147 } 148 149 file->ucontext = ucontext; 150 151 fd_install(resp.async_fd, filp); 152 153 mutex_unlock(&file->mutex); 154 155 return in_len; 156 157 err_file: 158 ib_uverbs_free_async_event_file(file); 159 fput(filp); 160 161 err_fd: 162 put_unused_fd(resp.async_fd); 163 164 err_free: 165 put_pid(ucontext->tgid); 166 ib_dev->dealloc_ucontext(ucontext); 167 168 err_alloc: 169 ib_rdmacg_uncharge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE); 170 171 err: 172 mutex_unlock(&file->mutex); 173 return ret; 174 } 175 176 static void copy_query_dev_fields(struct ib_uverbs_file *file, 177 struct ib_device *ib_dev, 178 struct ib_uverbs_query_device_resp *resp, 179 struct ib_device_attr *attr) 180 { 181 resp->fw_ver = attr->fw_ver; 182 resp->node_guid = ib_dev->node_guid; 183 resp->sys_image_guid = attr->sys_image_guid; 184 resp->max_mr_size = attr->max_mr_size; 185 resp->page_size_cap = attr->page_size_cap; 186 resp->vendor_id = attr->vendor_id; 187 resp->vendor_part_id = attr->vendor_part_id; 188 resp->hw_ver = attr->hw_ver; 189 resp->max_qp = attr->max_qp; 190 resp->max_qp_wr = attr->max_qp_wr; 191 resp->device_cap_flags = lower_32_bits(attr->device_cap_flags); 192 resp->max_sge = attr->max_sge; 193 resp->max_sge_rd = attr->max_sge_rd; 194 resp->max_cq = attr->max_cq; 195 resp->max_cqe = attr->max_cqe; 196 resp->max_mr = attr->max_mr; 197 resp->max_pd = attr->max_pd; 198 resp->max_qp_rd_atom = attr->max_qp_rd_atom; 199 resp->max_ee_rd_atom = attr->max_ee_rd_atom; 200 resp->max_res_rd_atom = attr->max_res_rd_atom; 201 resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom; 202 resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom; 203 resp->atomic_cap = attr->atomic_cap; 204 resp->max_ee = attr->max_ee; 205 resp->max_rdd = attr->max_rdd; 206 resp->max_mw = attr->max_mw; 207 resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp; 208 resp->max_raw_ethy_qp = attr->max_raw_ethy_qp; 209 resp->max_mcast_grp = attr->max_mcast_grp; 210 resp->max_mcast_qp_attach = attr->max_mcast_qp_attach; 211 resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach; 212 resp->max_ah = attr->max_ah; 213 resp->max_fmr = attr->max_fmr; 214 resp->max_map_per_fmr = attr->max_map_per_fmr; 215 resp->max_srq = attr->max_srq; 216 resp->max_srq_wr = attr->max_srq_wr; 217 resp->max_srq_sge = attr->max_srq_sge; 218 resp->max_pkeys = attr->max_pkeys; 219 resp->local_ca_ack_delay = attr->local_ca_ack_delay; 220 resp->phys_port_cnt = ib_dev->phys_port_cnt; 221 } 222 223 ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, 224 struct ib_device *ib_dev, 225 const char __user *buf, 226 int in_len, int out_len) 227 { 228 struct ib_uverbs_query_device cmd; 229 struct ib_uverbs_query_device_resp resp; 230 231 if (out_len < sizeof resp) 232 return -ENOSPC; 233 234 if (copy_from_user(&cmd, buf, sizeof cmd)) 235 return -EFAULT; 236 237 memset(&resp, 0, sizeof resp); 238 copy_query_dev_fields(file, ib_dev, &resp, &ib_dev->attrs); 239 240 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) 241 return -EFAULT; 242 243 return in_len; 244 } 245 246 ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, 247 struct ib_device *ib_dev, 248 const char __user *buf, 249 int in_len, int out_len) 250 { 251 struct ib_uverbs_query_port cmd; 252 struct ib_uverbs_query_port_resp resp; 253 struct ib_port_attr attr; 254 int ret; 255 256 if (out_len < sizeof resp) 257 return -ENOSPC; 258 259 if (copy_from_user(&cmd, buf, sizeof cmd)) 260 return -EFAULT; 261 262 ret = ib_query_port(ib_dev, cmd.port_num, &attr); 263 if (ret) 264 return ret; 265 266 memset(&resp, 0, sizeof resp); 267 268 resp.state = attr.state; 269 resp.max_mtu = attr.max_mtu; 270 resp.active_mtu = attr.active_mtu; 271 resp.gid_tbl_len = attr.gid_tbl_len; 272 resp.port_cap_flags = attr.port_cap_flags; 273 resp.max_msg_sz = attr.max_msg_sz; 274 resp.bad_pkey_cntr = attr.bad_pkey_cntr; 275 resp.qkey_viol_cntr = attr.qkey_viol_cntr; 276 resp.pkey_tbl_len = attr.pkey_tbl_len; 277 278 if (rdma_cap_opa_ah(ib_dev, cmd.port_num)) { 279 resp.lid = OPA_TO_IB_UCAST_LID(attr.lid); 280 resp.sm_lid = OPA_TO_IB_UCAST_LID(attr.sm_lid); 281 } else { 282 resp.lid = ib_lid_cpu16(attr.lid); 283 resp.sm_lid = ib_lid_cpu16(attr.sm_lid); 284 } 285 resp.lmc = attr.lmc; 286 resp.max_vl_num = attr.max_vl_num; 287 resp.sm_sl = attr.sm_sl; 288 resp.subnet_timeout = attr.subnet_timeout; 289 resp.init_type_reply = attr.init_type_reply; 290 resp.active_width = attr.active_width; 291 resp.active_speed = attr.active_speed; 292 resp.phys_state = attr.phys_state; 293 resp.link_layer = rdma_port_get_link_layer(ib_dev, 294 cmd.port_num); 295 296 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) 297 return -EFAULT; 298 299 return in_len; 300 } 301 302 ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, 303 struct ib_device *ib_dev, 304 const char __user *buf, 305 int in_len, int out_len) 306 { 307 struct ib_uverbs_alloc_pd cmd; 308 struct ib_uverbs_alloc_pd_resp resp; 309 struct ib_udata udata; 310 struct ib_uobject *uobj; 311 struct ib_pd *pd; 312 int ret; 313 314 if (out_len < sizeof resp) 315 return -ENOSPC; 316 317 if (copy_from_user(&cmd, buf, sizeof cmd)) 318 return -EFAULT; 319 320 ib_uverbs_init_udata(&udata, buf + sizeof(cmd), 321 u64_to_user_ptr(cmd.response) + sizeof(resp), 322 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), 323 out_len - sizeof(resp)); 324 325 uobj = uobj_alloc(uobj_get_type(pd), file->ucontext); 326 if (IS_ERR(uobj)) 327 return PTR_ERR(uobj); 328 329 pd = ib_dev->alloc_pd(ib_dev, file->ucontext, &udata); 330 if (IS_ERR(pd)) { 331 ret = PTR_ERR(pd); 332 goto err; 333 } 334 335 pd->device = ib_dev; 336 pd->uobject = uobj; 337 pd->__internal_mr = NULL; 338 atomic_set(&pd->usecnt, 0); 339 340 uobj->object = pd; 341 memset(&resp, 0, sizeof resp); 342 resp.pd_handle = uobj->id; 343 344 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) { 345 ret = -EFAULT; 346 goto err_copy; 347 } 348 349 uobj_alloc_commit(uobj); 350 351 return in_len; 352 353 err_copy: 354 ib_dealloc_pd(pd); 355 356 err: 357 uobj_alloc_abort(uobj); 358 return ret; 359 } 360 361 ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, 362 struct ib_device *ib_dev, 363 const char __user *buf, 364 int in_len, int out_len) 365 { 366 struct ib_uverbs_dealloc_pd cmd; 367 struct ib_uobject *uobj; 368 int ret; 369 370 if (copy_from_user(&cmd, buf, sizeof cmd)) 371 return -EFAULT; 372 373 uobj = uobj_get_write(uobj_get_type(pd), cmd.pd_handle, 374 file->ucontext); 375 if (IS_ERR(uobj)) 376 return PTR_ERR(uobj); 377 378 ret = uobj_remove_commit(uobj); 379 380 return ret ?: in_len; 381 } 382 383 struct xrcd_table_entry { 384 struct rb_node node; 385 struct ib_xrcd *xrcd; 386 struct inode *inode; 387 }; 388 389 static int xrcd_table_insert(struct ib_uverbs_device *dev, 390 struct inode *inode, 391 struct ib_xrcd *xrcd) 392 { 393 struct xrcd_table_entry *entry, *scan; 394 struct rb_node **p = &dev->xrcd_tree.rb_node; 395 struct rb_node *parent = NULL; 396 397 entry = kmalloc(sizeof *entry, GFP_KERNEL); 398 if (!entry) 399 return -ENOMEM; 400 401 entry->xrcd = xrcd; 402 entry->inode = inode; 403 404 while (*p) { 405 parent = *p; 406 scan = rb_entry(parent, struct xrcd_table_entry, node); 407 408 if (inode < scan->inode) { 409 p = &(*p)->rb_left; 410 } else if (inode > scan->inode) { 411 p = &(*p)->rb_right; 412 } else { 413 kfree(entry); 414 return -EEXIST; 415 } 416 } 417 418 rb_link_node(&entry->node, parent, p); 419 rb_insert_color(&entry->node, &dev->xrcd_tree); 420 igrab(inode); 421 return 0; 422 } 423 424 static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev, 425 struct inode *inode) 426 { 427 struct xrcd_table_entry *entry; 428 struct rb_node *p = dev->xrcd_tree.rb_node; 429 430 while (p) { 431 entry = rb_entry(p, struct xrcd_table_entry, node); 432 433 if (inode < entry->inode) 434 p = p->rb_left; 435 else if (inode > entry->inode) 436 p = p->rb_right; 437 else 438 return entry; 439 } 440 441 return NULL; 442 } 443 444 static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode) 445 { 446 struct xrcd_table_entry *entry; 447 448 entry = xrcd_table_search(dev, inode); 449 if (!entry) 450 return NULL; 451 452 return entry->xrcd; 453 } 454 455 static void xrcd_table_delete(struct ib_uverbs_device *dev, 456 struct inode *inode) 457 { 458 struct xrcd_table_entry *entry; 459 460 entry = xrcd_table_search(dev, inode); 461 if (entry) { 462 iput(inode); 463 rb_erase(&entry->node, &dev->xrcd_tree); 464 kfree(entry); 465 } 466 } 467 468 ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file, 469 struct ib_device *ib_dev, 470 const char __user *buf, int in_len, 471 int out_len) 472 { 473 struct ib_uverbs_open_xrcd cmd; 474 struct ib_uverbs_open_xrcd_resp resp; 475 struct ib_udata udata; 476 struct ib_uxrcd_object *obj; 477 struct ib_xrcd *xrcd = NULL; 478 struct fd f = {NULL, 0}; 479 struct inode *inode = NULL; 480 int ret = 0; 481 int new_xrcd = 0; 482 483 if (out_len < sizeof resp) 484 return -ENOSPC; 485 486 if (copy_from_user(&cmd, buf, sizeof cmd)) 487 return -EFAULT; 488 489 ib_uverbs_init_udata(&udata, buf + sizeof(cmd), 490 u64_to_user_ptr(cmd.response) + sizeof(resp), 491 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), 492 out_len - sizeof(resp)); 493 494 mutex_lock(&file->device->xrcd_tree_mutex); 495 496 if (cmd.fd != -1) { 497 /* search for file descriptor */ 498 f = fdget(cmd.fd); 499 if (!f.file) { 500 ret = -EBADF; 501 goto err_tree_mutex_unlock; 502 } 503 504 inode = file_inode(f.file); 505 xrcd = find_xrcd(file->device, inode); 506 if (!xrcd && !(cmd.oflags & O_CREAT)) { 507 /* no file descriptor. Need CREATE flag */ 508 ret = -EAGAIN; 509 goto err_tree_mutex_unlock; 510 } 511 512 if (xrcd && cmd.oflags & O_EXCL) { 513 ret = -EINVAL; 514 goto err_tree_mutex_unlock; 515 } 516 } 517 518 obj = (struct ib_uxrcd_object *)uobj_alloc(uobj_get_type(xrcd), 519 file->ucontext); 520 if (IS_ERR(obj)) { 521 ret = PTR_ERR(obj); 522 goto err_tree_mutex_unlock; 523 } 524 525 if (!xrcd) { 526 xrcd = ib_dev->alloc_xrcd(ib_dev, file->ucontext, &udata); 527 if (IS_ERR(xrcd)) { 528 ret = PTR_ERR(xrcd); 529 goto err; 530 } 531 532 xrcd->inode = inode; 533 xrcd->device = ib_dev; 534 atomic_set(&xrcd->usecnt, 0); 535 mutex_init(&xrcd->tgt_qp_mutex); 536 INIT_LIST_HEAD(&xrcd->tgt_qp_list); 537 new_xrcd = 1; 538 } 539 540 atomic_set(&obj->refcnt, 0); 541 obj->uobject.object = xrcd; 542 memset(&resp, 0, sizeof resp); 543 resp.xrcd_handle = obj->uobject.id; 544 545 if (inode) { 546 if (new_xrcd) { 547 /* create new inode/xrcd table entry */ 548 ret = xrcd_table_insert(file->device, inode, xrcd); 549 if (ret) 550 goto err_dealloc_xrcd; 551 } 552 atomic_inc(&xrcd->usecnt); 553 } 554 555 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) { 556 ret = -EFAULT; 557 goto err_copy; 558 } 559 560 if (f.file) 561 fdput(f); 562 563 uobj_alloc_commit(&obj->uobject); 564 565 mutex_unlock(&file->device->xrcd_tree_mutex); 566 return in_len; 567 568 err_copy: 569 if (inode) { 570 if (new_xrcd) 571 xrcd_table_delete(file->device, inode); 572 atomic_dec(&xrcd->usecnt); 573 } 574 575 err_dealloc_xrcd: 576 ib_dealloc_xrcd(xrcd); 577 578 err: 579 uobj_alloc_abort(&obj->uobject); 580 581 err_tree_mutex_unlock: 582 if (f.file) 583 fdput(f); 584 585 mutex_unlock(&file->device->xrcd_tree_mutex); 586 587 return ret; 588 } 589 590 ssize_t ib_uverbs_close_xrcd(struct ib_uverbs_file *file, 591 struct ib_device *ib_dev, 592 const char __user *buf, int in_len, 593 int out_len) 594 { 595 struct ib_uverbs_close_xrcd cmd; 596 struct ib_uobject *uobj; 597 int ret = 0; 598 599 if (copy_from_user(&cmd, buf, sizeof cmd)) 600 return -EFAULT; 601 602 uobj = uobj_get_write(uobj_get_type(xrcd), cmd.xrcd_handle, 603 file->ucontext); 604 if (IS_ERR(uobj)) { 605 mutex_unlock(&file->device->xrcd_tree_mutex); 606 return PTR_ERR(uobj); 607 } 608 609 ret = uobj_remove_commit(uobj); 610 return ret ?: in_len; 611 } 612 613 int ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev, 614 struct ib_xrcd *xrcd, 615 enum rdma_remove_reason why) 616 { 617 struct inode *inode; 618 int ret; 619 620 inode = xrcd->inode; 621 if (inode && !atomic_dec_and_test(&xrcd->usecnt)) 622 return 0; 623 624 ret = ib_dealloc_xrcd(xrcd); 625 626 if (why == RDMA_REMOVE_DESTROY && ret) 627 atomic_inc(&xrcd->usecnt); 628 else if (inode) 629 xrcd_table_delete(dev, inode); 630 631 return ret; 632 } 633 634 ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, 635 struct ib_device *ib_dev, 636 const char __user *buf, int in_len, 637 int out_len) 638 { 639 struct ib_uverbs_reg_mr cmd; 640 struct ib_uverbs_reg_mr_resp resp; 641 struct ib_udata udata; 642 struct ib_uobject *uobj; 643 struct ib_pd *pd; 644 struct ib_mr *mr; 645 int ret; 646 647 if (out_len < sizeof resp) 648 return -ENOSPC; 649 650 if (copy_from_user(&cmd, buf, sizeof cmd)) 651 return -EFAULT; 652 653 ib_uverbs_init_udata(&udata, buf + sizeof(cmd), 654 u64_to_user_ptr(cmd.response) + sizeof(resp), 655 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), 656 out_len - sizeof(resp)); 657 658 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) 659 return -EINVAL; 660 661 ret = ib_check_mr_access(cmd.access_flags); 662 if (ret) 663 return ret; 664 665 uobj = uobj_alloc(uobj_get_type(mr), file->ucontext); 666 if (IS_ERR(uobj)) 667 return PTR_ERR(uobj); 668 669 pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext); 670 if (!pd) { 671 ret = -EINVAL; 672 goto err_free; 673 } 674 675 if (cmd.access_flags & IB_ACCESS_ON_DEMAND) { 676 if (!(pd->device->attrs.device_cap_flags & 677 IB_DEVICE_ON_DEMAND_PAGING)) { 678 pr_debug("ODP support not available\n"); 679 ret = -EINVAL; 680 goto err_put; 681 } 682 } 683 684 mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, 685 cmd.access_flags, &udata); 686 if (IS_ERR(mr)) { 687 ret = PTR_ERR(mr); 688 goto err_put; 689 } 690 691 mr->device = pd->device; 692 mr->pd = pd; 693 mr->uobject = uobj; 694 atomic_inc(&pd->usecnt); 695 696 uobj->object = mr; 697 698 memset(&resp, 0, sizeof resp); 699 resp.lkey = mr->lkey; 700 resp.rkey = mr->rkey; 701 resp.mr_handle = uobj->id; 702 703 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) { 704 ret = -EFAULT; 705 goto err_copy; 706 } 707 708 uobj_put_obj_read(pd); 709 710 uobj_alloc_commit(uobj); 711 712 return in_len; 713 714 err_copy: 715 ib_dereg_mr(mr); 716 717 err_put: 718 uobj_put_obj_read(pd); 719 720 err_free: 721 uobj_alloc_abort(uobj); 722 return ret; 723 } 724 725 ssize_t ib_uverbs_rereg_mr(struct ib_uverbs_file *file, 726 struct ib_device *ib_dev, 727 const char __user *buf, int in_len, 728 int out_len) 729 { 730 struct ib_uverbs_rereg_mr cmd; 731 struct ib_uverbs_rereg_mr_resp resp; 732 struct ib_udata udata; 733 struct ib_pd *pd = NULL; 734 struct ib_mr *mr; 735 struct ib_pd *old_pd; 736 int ret; 737 struct ib_uobject *uobj; 738 739 if (out_len < sizeof(resp)) 740 return -ENOSPC; 741 742 if (copy_from_user(&cmd, buf, sizeof(cmd))) 743 return -EFAULT; 744 745 ib_uverbs_init_udata(&udata, buf + sizeof(cmd), 746 u64_to_user_ptr(cmd.response) + sizeof(resp), 747 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), 748 out_len - sizeof(resp)); 749 750 if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags) 751 return -EINVAL; 752 753 if ((cmd.flags & IB_MR_REREG_TRANS) && 754 (!cmd.start || !cmd.hca_va || 0 >= cmd.length || 755 (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))) 756 return -EINVAL; 757 758 uobj = uobj_get_write(uobj_get_type(mr), cmd.mr_handle, 759 file->ucontext); 760 if (IS_ERR(uobj)) 761 return PTR_ERR(uobj); 762 763 mr = uobj->object; 764 765 if (cmd.flags & IB_MR_REREG_ACCESS) { 766 ret = ib_check_mr_access(cmd.access_flags); 767 if (ret) 768 goto put_uobjs; 769 } 770 771 if (cmd.flags & IB_MR_REREG_PD) { 772 pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext); 773 if (!pd) { 774 ret = -EINVAL; 775 goto put_uobjs; 776 } 777 } 778 779 old_pd = mr->pd; 780 ret = mr->device->rereg_user_mr(mr, cmd.flags, cmd.start, 781 cmd.length, cmd.hca_va, 782 cmd.access_flags, pd, &udata); 783 if (!ret) { 784 if (cmd.flags & IB_MR_REREG_PD) { 785 atomic_inc(&pd->usecnt); 786 mr->pd = pd; 787 atomic_dec(&old_pd->usecnt); 788 } 789 } else { 790 goto put_uobj_pd; 791 } 792 793 memset(&resp, 0, sizeof(resp)); 794 resp.lkey = mr->lkey; 795 resp.rkey = mr->rkey; 796 797 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof(resp))) 798 ret = -EFAULT; 799 else 800 ret = in_len; 801 802 put_uobj_pd: 803 if (cmd.flags & IB_MR_REREG_PD) 804 uobj_put_obj_read(pd); 805 806 put_uobjs: 807 uobj_put_write(uobj); 808 809 return ret; 810 } 811 812 ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, 813 struct ib_device *ib_dev, 814 const char __user *buf, int in_len, 815 int out_len) 816 { 817 struct ib_uverbs_dereg_mr cmd; 818 struct ib_uobject *uobj; 819 int ret = -EINVAL; 820 821 if (copy_from_user(&cmd, buf, sizeof cmd)) 822 return -EFAULT; 823 824 uobj = uobj_get_write(uobj_get_type(mr), cmd.mr_handle, 825 file->ucontext); 826 if (IS_ERR(uobj)) 827 return PTR_ERR(uobj); 828 829 ret = uobj_remove_commit(uobj); 830 831 return ret ?: in_len; 832 } 833 834 ssize_t ib_uverbs_alloc_mw(struct ib_uverbs_file *file, 835 struct ib_device *ib_dev, 836 const char __user *buf, int in_len, 837 int out_len) 838 { 839 struct ib_uverbs_alloc_mw cmd; 840 struct ib_uverbs_alloc_mw_resp resp; 841 struct ib_uobject *uobj; 842 struct ib_pd *pd; 843 struct ib_mw *mw; 844 struct ib_udata udata; 845 int ret; 846 847 if (out_len < sizeof(resp)) 848 return -ENOSPC; 849 850 if (copy_from_user(&cmd, buf, sizeof(cmd))) 851 return -EFAULT; 852 853 uobj = uobj_alloc(uobj_get_type(mw), file->ucontext); 854 if (IS_ERR(uobj)) 855 return PTR_ERR(uobj); 856 857 pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext); 858 if (!pd) { 859 ret = -EINVAL; 860 goto err_free; 861 } 862 863 ib_uverbs_init_udata(&udata, buf + sizeof(cmd), 864 u64_to_user_ptr(cmd.response) + sizeof(resp), 865 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), 866 out_len - sizeof(resp)); 867 868 mw = pd->device->alloc_mw(pd, cmd.mw_type, &udata); 869 if (IS_ERR(mw)) { 870 ret = PTR_ERR(mw); 871 goto err_put; 872 } 873 874 mw->device = pd->device; 875 mw->pd = pd; 876 mw->uobject = uobj; 877 atomic_inc(&pd->usecnt); 878 879 uobj->object = mw; 880 881 memset(&resp, 0, sizeof(resp)); 882 resp.rkey = mw->rkey; 883 resp.mw_handle = uobj->id; 884 885 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof(resp))) { 886 ret = -EFAULT; 887 goto err_copy; 888 } 889 890 uobj_put_obj_read(pd); 891 uobj_alloc_commit(uobj); 892 893 return in_len; 894 895 err_copy: 896 uverbs_dealloc_mw(mw); 897 err_put: 898 uobj_put_obj_read(pd); 899 err_free: 900 uobj_alloc_abort(uobj); 901 return ret; 902 } 903 904 ssize_t ib_uverbs_dealloc_mw(struct ib_uverbs_file *file, 905 struct ib_device *ib_dev, 906 const char __user *buf, int in_len, 907 int out_len) 908 { 909 struct ib_uverbs_dealloc_mw cmd; 910 struct ib_uobject *uobj; 911 int ret = -EINVAL; 912 913 if (copy_from_user(&cmd, buf, sizeof(cmd))) 914 return -EFAULT; 915 916 uobj = uobj_get_write(uobj_get_type(mw), cmd.mw_handle, 917 file->ucontext); 918 if (IS_ERR(uobj)) 919 return PTR_ERR(uobj); 920 921 ret = uobj_remove_commit(uobj); 922 return ret ?: in_len; 923 } 924 925 ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, 926 struct ib_device *ib_dev, 927 const char __user *buf, int in_len, 928 int out_len) 929 { 930 struct ib_uverbs_create_comp_channel cmd; 931 struct ib_uverbs_create_comp_channel_resp resp; 932 struct ib_uobject *uobj; 933 struct ib_uverbs_completion_event_file *ev_file; 934 935 if (out_len < sizeof resp) 936 return -ENOSPC; 937 938 if (copy_from_user(&cmd, buf, sizeof cmd)) 939 return -EFAULT; 940 941 uobj = uobj_alloc(uobj_get_type(comp_channel), file->ucontext); 942 if (IS_ERR(uobj)) 943 return PTR_ERR(uobj); 944 945 resp.fd = uobj->id; 946 947 ev_file = container_of(uobj, struct ib_uverbs_completion_event_file, 948 uobj_file.uobj); 949 ib_uverbs_init_event_queue(&ev_file->ev_queue); 950 951 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) { 952 uobj_alloc_abort(uobj); 953 return -EFAULT; 954 } 955 956 uobj_alloc_commit(uobj); 957 return in_len; 958 } 959 960 static struct ib_ucq_object *create_cq(struct ib_uverbs_file *file, 961 struct ib_device *ib_dev, 962 struct ib_udata *ucore, 963 struct ib_udata *uhw, 964 struct ib_uverbs_ex_create_cq *cmd, 965 size_t cmd_sz, 966 int (*cb)(struct ib_uverbs_file *file, 967 struct ib_ucq_object *obj, 968 struct ib_uverbs_ex_create_cq_resp *resp, 969 struct ib_udata *udata, 970 void *context), 971 void *context) 972 { 973 struct ib_ucq_object *obj; 974 struct ib_uverbs_completion_event_file *ev_file = NULL; 975 struct ib_cq *cq; 976 int ret; 977 struct ib_uverbs_ex_create_cq_resp resp; 978 struct ib_cq_init_attr attr = {}; 979 980 if (cmd->comp_vector >= file->device->num_comp_vectors) 981 return ERR_PTR(-EINVAL); 982 983 obj = (struct ib_ucq_object *)uobj_alloc(uobj_get_type(cq), 984 file->ucontext); 985 if (IS_ERR(obj)) 986 return obj; 987 988 if (cmd->comp_channel >= 0) { 989 ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel, 990 file->ucontext); 991 if (IS_ERR(ev_file)) { 992 ret = PTR_ERR(ev_file); 993 goto err; 994 } 995 } 996 997 obj->uobject.user_handle = cmd->user_handle; 998 obj->uverbs_file = file; 999 obj->comp_events_reported = 0; 1000 obj->async_events_reported = 0; 1001 INIT_LIST_HEAD(&obj->comp_list); 1002 INIT_LIST_HEAD(&obj->async_list); 1003 1004 attr.cqe = cmd->cqe; 1005 attr.comp_vector = cmd->comp_vector; 1006 1007 if (cmd_sz > offsetof(typeof(*cmd), flags) + sizeof(cmd->flags)) 1008 attr.flags = cmd->flags; 1009 1010 cq = ib_dev->create_cq(ib_dev, &attr, file->ucontext, uhw); 1011 if (IS_ERR(cq)) { 1012 ret = PTR_ERR(cq); 1013 goto err_file; 1014 } 1015 1016 cq->device = ib_dev; 1017 cq->uobject = &obj->uobject; 1018 cq->comp_handler = ib_uverbs_comp_handler; 1019 cq->event_handler = ib_uverbs_cq_event_handler; 1020 cq->cq_context = ev_file ? &ev_file->ev_queue : NULL; 1021 atomic_set(&cq->usecnt, 0); 1022 1023 obj->uobject.object = cq; 1024 memset(&resp, 0, sizeof resp); 1025 resp.base.cq_handle = obj->uobject.id; 1026 resp.base.cqe = cq->cqe; 1027 1028 resp.response_length = offsetof(typeof(resp), response_length) + 1029 sizeof(resp.response_length); 1030 1031 ret = cb(file, obj, &resp, ucore, context); 1032 if (ret) 1033 goto err_cb; 1034 1035 uobj_alloc_commit(&obj->uobject); 1036 1037 return obj; 1038 1039 err_cb: 1040 ib_destroy_cq(cq); 1041 1042 err_file: 1043 if (ev_file) 1044 ib_uverbs_release_ucq(file, ev_file, obj); 1045 1046 err: 1047 uobj_alloc_abort(&obj->uobject); 1048 1049 return ERR_PTR(ret); 1050 } 1051 1052 static int ib_uverbs_create_cq_cb(struct ib_uverbs_file *file, 1053 struct ib_ucq_object *obj, 1054 struct ib_uverbs_ex_create_cq_resp *resp, 1055 struct ib_udata *ucore, void *context) 1056 { 1057 if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base))) 1058 return -EFAULT; 1059 1060 return 0; 1061 } 1062 1063 ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, 1064 struct ib_device *ib_dev, 1065 const char __user *buf, int in_len, 1066 int out_len) 1067 { 1068 struct ib_uverbs_create_cq cmd; 1069 struct ib_uverbs_ex_create_cq cmd_ex; 1070 struct ib_uverbs_create_cq_resp resp; 1071 struct ib_udata ucore; 1072 struct ib_udata uhw; 1073 struct ib_ucq_object *obj; 1074 1075 if (out_len < sizeof(resp)) 1076 return -ENOSPC; 1077 1078 if (copy_from_user(&cmd, buf, sizeof(cmd))) 1079 return -EFAULT; 1080 1081 ib_uverbs_init_udata(&ucore, buf, u64_to_user_ptr(cmd.response), 1082 sizeof(cmd), sizeof(resp)); 1083 1084 ib_uverbs_init_udata(&uhw, buf + sizeof(cmd), 1085 u64_to_user_ptr(cmd.response) + sizeof(resp), 1086 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), 1087 out_len - sizeof(resp)); 1088 1089 memset(&cmd_ex, 0, sizeof(cmd_ex)); 1090 cmd_ex.user_handle = cmd.user_handle; 1091 cmd_ex.cqe = cmd.cqe; 1092 cmd_ex.comp_vector = cmd.comp_vector; 1093 cmd_ex.comp_channel = cmd.comp_channel; 1094 1095 obj = create_cq(file, ib_dev, &ucore, &uhw, &cmd_ex, 1096 offsetof(typeof(cmd_ex), comp_channel) + 1097 sizeof(cmd.comp_channel), ib_uverbs_create_cq_cb, 1098 NULL); 1099 1100 if (IS_ERR(obj)) 1101 return PTR_ERR(obj); 1102 1103 return in_len; 1104 } 1105 1106 static int ib_uverbs_ex_create_cq_cb(struct ib_uverbs_file *file, 1107 struct ib_ucq_object *obj, 1108 struct ib_uverbs_ex_create_cq_resp *resp, 1109 struct ib_udata *ucore, void *context) 1110 { 1111 if (ib_copy_to_udata(ucore, resp, resp->response_length)) 1112 return -EFAULT; 1113 1114 return 0; 1115 } 1116 1117 int ib_uverbs_ex_create_cq(struct ib_uverbs_file *file, 1118 struct ib_device *ib_dev, 1119 struct ib_udata *ucore, 1120 struct ib_udata *uhw) 1121 { 1122 struct ib_uverbs_ex_create_cq_resp resp; 1123 struct ib_uverbs_ex_create_cq cmd; 1124 struct ib_ucq_object *obj; 1125 int err; 1126 1127 if (ucore->inlen < sizeof(cmd)) 1128 return -EINVAL; 1129 1130 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); 1131 if (err) 1132 return err; 1133 1134 if (cmd.comp_mask) 1135 return -EINVAL; 1136 1137 if (cmd.reserved) 1138 return -EINVAL; 1139 1140 if (ucore->outlen < (offsetof(typeof(resp), response_length) + 1141 sizeof(resp.response_length))) 1142 return -ENOSPC; 1143 1144 obj = create_cq(file, ib_dev, ucore, uhw, &cmd, 1145 min(ucore->inlen, sizeof(cmd)), 1146 ib_uverbs_ex_create_cq_cb, NULL); 1147 1148 if (IS_ERR(obj)) 1149 return PTR_ERR(obj); 1150 1151 return 0; 1152 } 1153 1154 ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, 1155 struct ib_device *ib_dev, 1156 const char __user *buf, int in_len, 1157 int out_len) 1158 { 1159 struct ib_uverbs_resize_cq cmd; 1160 struct ib_uverbs_resize_cq_resp resp = {}; 1161 struct ib_udata udata; 1162 struct ib_cq *cq; 1163 int ret = -EINVAL; 1164 1165 if (copy_from_user(&cmd, buf, sizeof cmd)) 1166 return -EFAULT; 1167 1168 ib_uverbs_init_udata(&udata, buf + sizeof(cmd), 1169 u64_to_user_ptr(cmd.response) + sizeof(resp), 1170 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), 1171 out_len - sizeof(resp)); 1172 1173 cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext); 1174 if (!cq) 1175 return -EINVAL; 1176 1177 ret = cq->device->resize_cq(cq, cmd.cqe, &udata); 1178 if (ret) 1179 goto out; 1180 1181 resp.cqe = cq->cqe; 1182 1183 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp.cqe)) 1184 ret = -EFAULT; 1185 1186 out: 1187 uobj_put_obj_read(cq); 1188 1189 return ret ? ret : in_len; 1190 } 1191 1192 static int copy_wc_to_user(struct ib_device *ib_dev, void __user *dest, 1193 struct ib_wc *wc) 1194 { 1195 struct ib_uverbs_wc tmp; 1196 1197 tmp.wr_id = wc->wr_id; 1198 tmp.status = wc->status; 1199 tmp.opcode = wc->opcode; 1200 tmp.vendor_err = wc->vendor_err; 1201 tmp.byte_len = wc->byte_len; 1202 tmp.ex.imm_data = (__u32 __force) wc->ex.imm_data; 1203 tmp.qp_num = wc->qp->qp_num; 1204 tmp.src_qp = wc->src_qp; 1205 tmp.wc_flags = wc->wc_flags; 1206 tmp.pkey_index = wc->pkey_index; 1207 if (rdma_cap_opa_ah(ib_dev, wc->port_num)) 1208 tmp.slid = OPA_TO_IB_UCAST_LID(wc->slid); 1209 else 1210 tmp.slid = ib_lid_cpu16(wc->slid); 1211 tmp.sl = wc->sl; 1212 tmp.dlid_path_bits = wc->dlid_path_bits; 1213 tmp.port_num = wc->port_num; 1214 tmp.reserved = 0; 1215 1216 if (copy_to_user(dest, &tmp, sizeof tmp)) 1217 return -EFAULT; 1218 1219 return 0; 1220 } 1221 1222 ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, 1223 struct ib_device *ib_dev, 1224 const char __user *buf, int in_len, 1225 int out_len) 1226 { 1227 struct ib_uverbs_poll_cq cmd; 1228 struct ib_uverbs_poll_cq_resp resp; 1229 u8 __user *header_ptr; 1230 u8 __user *data_ptr; 1231 struct ib_cq *cq; 1232 struct ib_wc wc; 1233 int ret; 1234 1235 if (copy_from_user(&cmd, buf, sizeof cmd)) 1236 return -EFAULT; 1237 1238 cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext); 1239 if (!cq) 1240 return -EINVAL; 1241 1242 /* we copy a struct ib_uverbs_poll_cq_resp to user space */ 1243 header_ptr = u64_to_user_ptr(cmd.response); 1244 data_ptr = header_ptr + sizeof resp; 1245 1246 memset(&resp, 0, sizeof resp); 1247 while (resp.count < cmd.ne) { 1248 ret = ib_poll_cq(cq, 1, &wc); 1249 if (ret < 0) 1250 goto out_put; 1251 if (!ret) 1252 break; 1253 1254 ret = copy_wc_to_user(ib_dev, data_ptr, &wc); 1255 if (ret) 1256 goto out_put; 1257 1258 data_ptr += sizeof(struct ib_uverbs_wc); 1259 ++resp.count; 1260 } 1261 1262 if (copy_to_user(header_ptr, &resp, sizeof resp)) { 1263 ret = -EFAULT; 1264 goto out_put; 1265 } 1266 1267 ret = in_len; 1268 1269 out_put: 1270 uobj_put_obj_read(cq); 1271 return ret; 1272 } 1273 1274 ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, 1275 struct ib_device *ib_dev, 1276 const char __user *buf, int in_len, 1277 int out_len) 1278 { 1279 struct ib_uverbs_req_notify_cq cmd; 1280 struct ib_cq *cq; 1281 1282 if (copy_from_user(&cmd, buf, sizeof cmd)) 1283 return -EFAULT; 1284 1285 cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext); 1286 if (!cq) 1287 return -EINVAL; 1288 1289 ib_req_notify_cq(cq, cmd.solicited_only ? 1290 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); 1291 1292 uobj_put_obj_read(cq); 1293 1294 return in_len; 1295 } 1296 1297 ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, 1298 struct ib_device *ib_dev, 1299 const char __user *buf, int in_len, 1300 int out_len) 1301 { 1302 struct ib_uverbs_destroy_cq cmd; 1303 struct ib_uverbs_destroy_cq_resp resp; 1304 struct ib_uobject *uobj; 1305 struct ib_cq *cq; 1306 struct ib_ucq_object *obj; 1307 int ret = -EINVAL; 1308 1309 if (copy_from_user(&cmd, buf, sizeof cmd)) 1310 return -EFAULT; 1311 1312 uobj = uobj_get_write(uobj_get_type(cq), cmd.cq_handle, 1313 file->ucontext); 1314 if (IS_ERR(uobj)) 1315 return PTR_ERR(uobj); 1316 1317 /* 1318 * Make sure we don't free the memory in remove_commit as we still 1319 * needs the uobject memory to create the response. 1320 */ 1321 uverbs_uobject_get(uobj); 1322 cq = uobj->object; 1323 obj = container_of(cq->uobject, struct ib_ucq_object, uobject); 1324 1325 memset(&resp, 0, sizeof(resp)); 1326 1327 ret = uobj_remove_commit(uobj); 1328 if (ret) { 1329 uverbs_uobject_put(uobj); 1330 return ret; 1331 } 1332 1333 resp.comp_events_reported = obj->comp_events_reported; 1334 resp.async_events_reported = obj->async_events_reported; 1335 1336 uverbs_uobject_put(uobj); 1337 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) 1338 return -EFAULT; 1339 1340 return in_len; 1341 } 1342 1343 static int create_qp(struct ib_uverbs_file *file, 1344 struct ib_udata *ucore, 1345 struct ib_udata *uhw, 1346 struct ib_uverbs_ex_create_qp *cmd, 1347 size_t cmd_sz, 1348 int (*cb)(struct ib_uverbs_file *file, 1349 struct ib_uverbs_ex_create_qp_resp *resp, 1350 struct ib_udata *udata), 1351 void *context) 1352 { 1353 struct ib_uqp_object *obj; 1354 struct ib_device *device; 1355 struct ib_pd *pd = NULL; 1356 struct ib_xrcd *xrcd = NULL; 1357 struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT); 1358 struct ib_cq *scq = NULL, *rcq = NULL; 1359 struct ib_srq *srq = NULL; 1360 struct ib_qp *qp; 1361 char *buf; 1362 struct ib_qp_init_attr attr = {}; 1363 struct ib_uverbs_ex_create_qp_resp resp; 1364 int ret; 1365 struct ib_rwq_ind_table *ind_tbl = NULL; 1366 bool has_sq = true; 1367 1368 if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW)) 1369 return -EPERM; 1370 1371 obj = (struct ib_uqp_object *)uobj_alloc(uobj_get_type(qp), 1372 file->ucontext); 1373 if (IS_ERR(obj)) 1374 return PTR_ERR(obj); 1375 obj->uxrcd = NULL; 1376 obj->uevent.uobject.user_handle = cmd->user_handle; 1377 mutex_init(&obj->mcast_lock); 1378 1379 if (cmd_sz >= offsetof(typeof(*cmd), rwq_ind_tbl_handle) + 1380 sizeof(cmd->rwq_ind_tbl_handle) && 1381 (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE)) { 1382 ind_tbl = uobj_get_obj_read(rwq_ind_table, 1383 cmd->rwq_ind_tbl_handle, 1384 file->ucontext); 1385 if (!ind_tbl) { 1386 ret = -EINVAL; 1387 goto err_put; 1388 } 1389 1390 attr.rwq_ind_tbl = ind_tbl; 1391 } 1392 1393 if (cmd_sz > sizeof(*cmd) && 1394 !ib_is_udata_cleared(ucore, sizeof(*cmd), 1395 cmd_sz - sizeof(*cmd))) { 1396 ret = -EOPNOTSUPP; 1397 goto err_put; 1398 } 1399 1400 if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) { 1401 ret = -EINVAL; 1402 goto err_put; 1403 } 1404 1405 if (ind_tbl && !cmd->max_send_wr) 1406 has_sq = false; 1407 1408 if (cmd->qp_type == IB_QPT_XRC_TGT) { 1409 xrcd_uobj = uobj_get_read(uobj_get_type(xrcd), cmd->pd_handle, 1410 file->ucontext); 1411 1412 if (IS_ERR(xrcd_uobj)) { 1413 ret = -EINVAL; 1414 goto err_put; 1415 } 1416 1417 xrcd = (struct ib_xrcd *)xrcd_uobj->object; 1418 if (!xrcd) { 1419 ret = -EINVAL; 1420 goto err_put; 1421 } 1422 device = xrcd->device; 1423 } else { 1424 if (cmd->qp_type == IB_QPT_XRC_INI) { 1425 cmd->max_recv_wr = 0; 1426 cmd->max_recv_sge = 0; 1427 } else { 1428 if (cmd->is_srq) { 1429 srq = uobj_get_obj_read(srq, cmd->srq_handle, 1430 file->ucontext); 1431 if (!srq || srq->srq_type == IB_SRQT_XRC) { 1432 ret = -EINVAL; 1433 goto err_put; 1434 } 1435 } 1436 1437 if (!ind_tbl) { 1438 if (cmd->recv_cq_handle != cmd->send_cq_handle) { 1439 rcq = uobj_get_obj_read(cq, cmd->recv_cq_handle, 1440 file->ucontext); 1441 if (!rcq) { 1442 ret = -EINVAL; 1443 goto err_put; 1444 } 1445 } 1446 } 1447 } 1448 1449 if (has_sq) 1450 scq = uobj_get_obj_read(cq, cmd->send_cq_handle, 1451 file->ucontext); 1452 if (!ind_tbl) 1453 rcq = rcq ?: scq; 1454 pd = uobj_get_obj_read(pd, cmd->pd_handle, file->ucontext); 1455 if (!pd || (!scq && has_sq)) { 1456 ret = -EINVAL; 1457 goto err_put; 1458 } 1459 1460 device = pd->device; 1461 } 1462 1463 attr.event_handler = ib_uverbs_qp_event_handler; 1464 attr.qp_context = file; 1465 attr.send_cq = scq; 1466 attr.recv_cq = rcq; 1467 attr.srq = srq; 1468 attr.xrcd = xrcd; 1469 attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR : 1470 IB_SIGNAL_REQ_WR; 1471 attr.qp_type = cmd->qp_type; 1472 attr.create_flags = 0; 1473 1474 attr.cap.max_send_wr = cmd->max_send_wr; 1475 attr.cap.max_recv_wr = cmd->max_recv_wr; 1476 attr.cap.max_send_sge = cmd->max_send_sge; 1477 attr.cap.max_recv_sge = cmd->max_recv_sge; 1478 attr.cap.max_inline_data = cmd->max_inline_data; 1479 1480 obj->uevent.events_reported = 0; 1481 INIT_LIST_HEAD(&obj->uevent.event_list); 1482 INIT_LIST_HEAD(&obj->mcast_list); 1483 1484 if (cmd_sz >= offsetof(typeof(*cmd), create_flags) + 1485 sizeof(cmd->create_flags)) 1486 attr.create_flags = cmd->create_flags; 1487 1488 if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK | 1489 IB_QP_CREATE_CROSS_CHANNEL | 1490 IB_QP_CREATE_MANAGED_SEND | 1491 IB_QP_CREATE_MANAGED_RECV | 1492 IB_QP_CREATE_SCATTER_FCS | 1493 IB_QP_CREATE_CVLAN_STRIPPING | 1494 IB_QP_CREATE_SOURCE_QPN | 1495 IB_QP_CREATE_PCI_WRITE_END_PADDING)) { 1496 ret = -EINVAL; 1497 goto err_put; 1498 } 1499 1500 if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) { 1501 if (!capable(CAP_NET_RAW)) { 1502 ret = -EPERM; 1503 goto err_put; 1504 } 1505 1506 attr.source_qpn = cmd->source_qpn; 1507 } 1508 1509 buf = (void *)cmd + sizeof(*cmd); 1510 if (cmd_sz > sizeof(*cmd)) 1511 if (!(buf[0] == 0 && !memcmp(buf, buf + 1, 1512 cmd_sz - sizeof(*cmd) - 1))) { 1513 ret = -EINVAL; 1514 goto err_put; 1515 } 1516 1517 if (cmd->qp_type == IB_QPT_XRC_TGT) 1518 qp = ib_create_qp(pd, &attr); 1519 else 1520 qp = device->create_qp(pd, &attr, uhw); 1521 1522 if (IS_ERR(qp)) { 1523 ret = PTR_ERR(qp); 1524 goto err_put; 1525 } 1526 1527 if (cmd->qp_type != IB_QPT_XRC_TGT) { 1528 ret = ib_create_qp_security(qp, device); 1529 if (ret) 1530 goto err_cb; 1531 1532 qp->real_qp = qp; 1533 qp->device = device; 1534 qp->pd = pd; 1535 qp->send_cq = attr.send_cq; 1536 qp->recv_cq = attr.recv_cq; 1537 qp->srq = attr.srq; 1538 qp->rwq_ind_tbl = ind_tbl; 1539 qp->event_handler = attr.event_handler; 1540 qp->qp_context = attr.qp_context; 1541 qp->qp_type = attr.qp_type; 1542 atomic_set(&qp->usecnt, 0); 1543 atomic_inc(&pd->usecnt); 1544 qp->port = 0; 1545 if (attr.send_cq) 1546 atomic_inc(&attr.send_cq->usecnt); 1547 if (attr.recv_cq) 1548 atomic_inc(&attr.recv_cq->usecnt); 1549 if (attr.srq) 1550 atomic_inc(&attr.srq->usecnt); 1551 if (ind_tbl) 1552 atomic_inc(&ind_tbl->usecnt); 1553 } 1554 qp->uobject = &obj->uevent.uobject; 1555 1556 obj->uevent.uobject.object = qp; 1557 1558 memset(&resp, 0, sizeof resp); 1559 resp.base.qpn = qp->qp_num; 1560 resp.base.qp_handle = obj->uevent.uobject.id; 1561 resp.base.max_recv_sge = attr.cap.max_recv_sge; 1562 resp.base.max_send_sge = attr.cap.max_send_sge; 1563 resp.base.max_recv_wr = attr.cap.max_recv_wr; 1564 resp.base.max_send_wr = attr.cap.max_send_wr; 1565 resp.base.max_inline_data = attr.cap.max_inline_data; 1566 1567 resp.response_length = offsetof(typeof(resp), response_length) + 1568 sizeof(resp.response_length); 1569 1570 ret = cb(file, &resp, ucore); 1571 if (ret) 1572 goto err_cb; 1573 1574 if (xrcd) { 1575 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, 1576 uobject); 1577 atomic_inc(&obj->uxrcd->refcnt); 1578 uobj_put_read(xrcd_uobj); 1579 } 1580 1581 if (pd) 1582 uobj_put_obj_read(pd); 1583 if (scq) 1584 uobj_put_obj_read(scq); 1585 if (rcq && rcq != scq) 1586 uobj_put_obj_read(rcq); 1587 if (srq) 1588 uobj_put_obj_read(srq); 1589 if (ind_tbl) 1590 uobj_put_obj_read(ind_tbl); 1591 1592 uobj_alloc_commit(&obj->uevent.uobject); 1593 1594 return 0; 1595 err_cb: 1596 ib_destroy_qp(qp); 1597 1598 err_put: 1599 if (!IS_ERR(xrcd_uobj)) 1600 uobj_put_read(xrcd_uobj); 1601 if (pd) 1602 uobj_put_obj_read(pd); 1603 if (scq) 1604 uobj_put_obj_read(scq); 1605 if (rcq && rcq != scq) 1606 uobj_put_obj_read(rcq); 1607 if (srq) 1608 uobj_put_obj_read(srq); 1609 if (ind_tbl) 1610 uobj_put_obj_read(ind_tbl); 1611 1612 uobj_alloc_abort(&obj->uevent.uobject); 1613 return ret; 1614 } 1615 1616 static int ib_uverbs_create_qp_cb(struct ib_uverbs_file *file, 1617 struct ib_uverbs_ex_create_qp_resp *resp, 1618 struct ib_udata *ucore) 1619 { 1620 if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base))) 1621 return -EFAULT; 1622 1623 return 0; 1624 } 1625 1626 ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, 1627 struct ib_device *ib_dev, 1628 const char __user *buf, int in_len, 1629 int out_len) 1630 { 1631 struct ib_uverbs_create_qp cmd; 1632 struct ib_uverbs_ex_create_qp cmd_ex; 1633 struct ib_udata ucore; 1634 struct ib_udata uhw; 1635 ssize_t resp_size = sizeof(struct ib_uverbs_create_qp_resp); 1636 int err; 1637 1638 if (out_len < resp_size) 1639 return -ENOSPC; 1640 1641 if (copy_from_user(&cmd, buf, sizeof(cmd))) 1642 return -EFAULT; 1643 1644 ib_uverbs_init_udata(&ucore, buf, u64_to_user_ptr(cmd.response), 1645 sizeof(cmd), resp_size); 1646 ib_uverbs_init_udata(&uhw, buf + sizeof(cmd), 1647 u64_to_user_ptr(cmd.response) + resp_size, 1648 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), 1649 out_len - resp_size); 1650 1651 memset(&cmd_ex, 0, sizeof(cmd_ex)); 1652 cmd_ex.user_handle = cmd.user_handle; 1653 cmd_ex.pd_handle = cmd.pd_handle; 1654 cmd_ex.send_cq_handle = cmd.send_cq_handle; 1655 cmd_ex.recv_cq_handle = cmd.recv_cq_handle; 1656 cmd_ex.srq_handle = cmd.srq_handle; 1657 cmd_ex.max_send_wr = cmd.max_send_wr; 1658 cmd_ex.max_recv_wr = cmd.max_recv_wr; 1659 cmd_ex.max_send_sge = cmd.max_send_sge; 1660 cmd_ex.max_recv_sge = cmd.max_recv_sge; 1661 cmd_ex.max_inline_data = cmd.max_inline_data; 1662 cmd_ex.sq_sig_all = cmd.sq_sig_all; 1663 cmd_ex.qp_type = cmd.qp_type; 1664 cmd_ex.is_srq = cmd.is_srq; 1665 1666 err = create_qp(file, &ucore, &uhw, &cmd_ex, 1667 offsetof(typeof(cmd_ex), is_srq) + 1668 sizeof(cmd.is_srq), ib_uverbs_create_qp_cb, 1669 NULL); 1670 1671 if (err) 1672 return err; 1673 1674 return in_len; 1675 } 1676 1677 static int ib_uverbs_ex_create_qp_cb(struct ib_uverbs_file *file, 1678 struct ib_uverbs_ex_create_qp_resp *resp, 1679 struct ib_udata *ucore) 1680 { 1681 if (ib_copy_to_udata(ucore, resp, resp->response_length)) 1682 return -EFAULT; 1683 1684 return 0; 1685 } 1686 1687 int ib_uverbs_ex_create_qp(struct ib_uverbs_file *file, 1688 struct ib_device *ib_dev, 1689 struct ib_udata *ucore, 1690 struct ib_udata *uhw) 1691 { 1692 struct ib_uverbs_ex_create_qp_resp resp; 1693 struct ib_uverbs_ex_create_qp cmd = {0}; 1694 int err; 1695 1696 if (ucore->inlen < (offsetof(typeof(cmd), comp_mask) + 1697 sizeof(cmd.comp_mask))) 1698 return -EINVAL; 1699 1700 err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); 1701 if (err) 1702 return err; 1703 1704 if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK) 1705 return -EINVAL; 1706 1707 if (cmd.reserved) 1708 return -EINVAL; 1709 1710 if (ucore->outlen < (offsetof(typeof(resp), response_length) + 1711 sizeof(resp.response_length))) 1712 return -ENOSPC; 1713 1714 err = create_qp(file, ucore, uhw, &cmd, 1715 min(ucore->inlen, sizeof(cmd)), 1716 ib_uverbs_ex_create_qp_cb, NULL); 1717 1718 if (err) 1719 return err; 1720 1721 return 0; 1722 } 1723 1724 ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file, 1725 struct ib_device *ib_dev, 1726 const char __user *buf, int in_len, int out_len) 1727 { 1728 struct ib_uverbs_open_qp cmd; 1729 struct ib_uverbs_create_qp_resp resp; 1730 struct ib_udata udata; 1731 struct ib_uqp_object *obj; 1732 struct ib_xrcd *xrcd; 1733 struct ib_uobject *uninitialized_var(xrcd_uobj); 1734 struct ib_qp *qp; 1735 struct ib_qp_open_attr attr; 1736 int ret; 1737 1738 if (out_len < sizeof resp) 1739 return -ENOSPC; 1740 1741 if (copy_from_user(&cmd, buf, sizeof cmd)) 1742 return -EFAULT; 1743 1744 ib_uverbs_init_udata(&udata, buf + sizeof(cmd), 1745 u64_to_user_ptr(cmd.response) + sizeof(resp), 1746 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), 1747 out_len - sizeof(resp)); 1748 1749 obj = (struct ib_uqp_object *)uobj_alloc(uobj_get_type(qp), 1750 file->ucontext); 1751 if (IS_ERR(obj)) 1752 return PTR_ERR(obj); 1753 1754 xrcd_uobj = uobj_get_read(uobj_get_type(xrcd), cmd.pd_handle, 1755 file->ucontext); 1756 if (IS_ERR(xrcd_uobj)) { 1757 ret = -EINVAL; 1758 goto err_put; 1759 } 1760 1761 xrcd = (struct ib_xrcd *)xrcd_uobj->object; 1762 if (!xrcd) { 1763 ret = -EINVAL; 1764 goto err_xrcd; 1765 } 1766 1767 attr.event_handler = ib_uverbs_qp_event_handler; 1768 attr.qp_context = file; 1769 attr.qp_num = cmd.qpn; 1770 attr.qp_type = cmd.qp_type; 1771 1772 obj->uevent.events_reported = 0; 1773 INIT_LIST_HEAD(&obj->uevent.event_list); 1774 INIT_LIST_HEAD(&obj->mcast_list); 1775 1776 qp = ib_open_qp(xrcd, &attr); 1777 if (IS_ERR(qp)) { 1778 ret = PTR_ERR(qp); 1779 goto err_xrcd; 1780 } 1781 1782 obj->uevent.uobject.object = qp; 1783 obj->uevent.uobject.user_handle = cmd.user_handle; 1784 1785 memset(&resp, 0, sizeof resp); 1786 resp.qpn = qp->qp_num; 1787 resp.qp_handle = obj->uevent.uobject.id; 1788 1789 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) { 1790 ret = -EFAULT; 1791 goto err_destroy; 1792 } 1793 1794 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); 1795 atomic_inc(&obj->uxrcd->refcnt); 1796 qp->uobject = &obj->uevent.uobject; 1797 uobj_put_read(xrcd_uobj); 1798 1799 1800 uobj_alloc_commit(&obj->uevent.uobject); 1801 1802 return in_len; 1803 1804 err_destroy: 1805 ib_destroy_qp(qp); 1806 err_xrcd: 1807 uobj_put_read(xrcd_uobj); 1808 err_put: 1809 uobj_alloc_abort(&obj->uevent.uobject); 1810 return ret; 1811 } 1812 1813 static void copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest *uverb_attr, 1814 struct rdma_ah_attr *rdma_attr) 1815 { 1816 const struct ib_global_route *grh; 1817 1818 uverb_attr->dlid = rdma_ah_get_dlid(rdma_attr); 1819 uverb_attr->sl = rdma_ah_get_sl(rdma_attr); 1820 uverb_attr->src_path_bits = rdma_ah_get_path_bits(rdma_attr); 1821 uverb_attr->static_rate = rdma_ah_get_static_rate(rdma_attr); 1822 uverb_attr->is_global = !!(rdma_ah_get_ah_flags(rdma_attr) & 1823 IB_AH_GRH); 1824 if (uverb_attr->is_global) { 1825 grh = rdma_ah_read_grh(rdma_attr); 1826 memcpy(uverb_attr->dgid, grh->dgid.raw, 16); 1827 uverb_attr->flow_label = grh->flow_label; 1828 uverb_attr->sgid_index = grh->sgid_index; 1829 uverb_attr->hop_limit = grh->hop_limit; 1830 uverb_attr->traffic_class = grh->traffic_class; 1831 } 1832 uverb_attr->port_num = rdma_ah_get_port_num(rdma_attr); 1833 } 1834 1835 ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, 1836 struct ib_device *ib_dev, 1837 const char __user *buf, int in_len, 1838 int out_len) 1839 { 1840 struct ib_uverbs_query_qp cmd; 1841 struct ib_uverbs_query_qp_resp resp; 1842 struct ib_qp *qp; 1843 struct ib_qp_attr *attr; 1844 struct ib_qp_init_attr *init_attr; 1845 int ret; 1846 1847 if (copy_from_user(&cmd, buf, sizeof cmd)) 1848 return -EFAULT; 1849 1850 attr = kmalloc(sizeof *attr, GFP_KERNEL); 1851 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); 1852 if (!attr || !init_attr) { 1853 ret = -ENOMEM; 1854 goto out; 1855 } 1856 1857 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext); 1858 if (!qp) { 1859 ret = -EINVAL; 1860 goto out; 1861 } 1862 1863 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); 1864 1865 uobj_put_obj_read(qp); 1866 1867 if (ret) 1868 goto out; 1869 1870 memset(&resp, 0, sizeof resp); 1871 1872 resp.qp_state = attr->qp_state; 1873 resp.cur_qp_state = attr->cur_qp_state; 1874 resp.path_mtu = attr->path_mtu; 1875 resp.path_mig_state = attr->path_mig_state; 1876 resp.qkey = attr->qkey; 1877 resp.rq_psn = attr->rq_psn; 1878 resp.sq_psn = attr->sq_psn; 1879 resp.dest_qp_num = attr->dest_qp_num; 1880 resp.qp_access_flags = attr->qp_access_flags; 1881 resp.pkey_index = attr->pkey_index; 1882 resp.alt_pkey_index = attr->alt_pkey_index; 1883 resp.sq_draining = attr->sq_draining; 1884 resp.max_rd_atomic = attr->max_rd_atomic; 1885 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; 1886 resp.min_rnr_timer = attr->min_rnr_timer; 1887 resp.port_num = attr->port_num; 1888 resp.timeout = attr->timeout; 1889 resp.retry_cnt = attr->retry_cnt; 1890 resp.rnr_retry = attr->rnr_retry; 1891 resp.alt_port_num = attr->alt_port_num; 1892 resp.alt_timeout = attr->alt_timeout; 1893 1894 copy_ah_attr_to_uverbs(&resp.dest, &attr->ah_attr); 1895 copy_ah_attr_to_uverbs(&resp.alt_dest, &attr->alt_ah_attr); 1896 1897 resp.max_send_wr = init_attr->cap.max_send_wr; 1898 resp.max_recv_wr = init_attr->cap.max_recv_wr; 1899 resp.max_send_sge = init_attr->cap.max_send_sge; 1900 resp.max_recv_sge = init_attr->cap.max_recv_sge; 1901 resp.max_inline_data = init_attr->cap.max_inline_data; 1902 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; 1903 1904 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) 1905 ret = -EFAULT; 1906 1907 out: 1908 kfree(attr); 1909 kfree(init_attr); 1910 1911 return ret ? ret : in_len; 1912 } 1913 1914 /* Remove ignored fields set in the attribute mask */ 1915 static int modify_qp_mask(enum ib_qp_type qp_type, int mask) 1916 { 1917 switch (qp_type) { 1918 case IB_QPT_XRC_INI: 1919 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER); 1920 case IB_QPT_XRC_TGT: 1921 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT | 1922 IB_QP_RNR_RETRY); 1923 default: 1924 return mask; 1925 } 1926 } 1927 1928 static void copy_ah_attr_from_uverbs(struct ib_device *dev, 1929 struct rdma_ah_attr *rdma_attr, 1930 struct ib_uverbs_qp_dest *uverb_attr) 1931 { 1932 rdma_attr->type = rdma_ah_find_type(dev, uverb_attr->port_num); 1933 if (uverb_attr->is_global) { 1934 rdma_ah_set_grh(rdma_attr, NULL, 1935 uverb_attr->flow_label, 1936 uverb_attr->sgid_index, 1937 uverb_attr->hop_limit, 1938 uverb_attr->traffic_class); 1939 rdma_ah_set_dgid_raw(rdma_attr, uverb_attr->dgid); 1940 } else { 1941 rdma_ah_set_ah_flags(rdma_attr, 0); 1942 } 1943 rdma_ah_set_dlid(rdma_attr, uverb_attr->dlid); 1944 rdma_ah_set_sl(rdma_attr, uverb_attr->sl); 1945 rdma_ah_set_path_bits(rdma_attr, uverb_attr->src_path_bits); 1946 rdma_ah_set_static_rate(rdma_attr, uverb_attr->static_rate); 1947 rdma_ah_set_port_num(rdma_attr, uverb_attr->port_num); 1948 rdma_ah_set_make_grd(rdma_attr, false); 1949 } 1950 1951 static int modify_qp(struct ib_uverbs_file *file, 1952 struct ib_uverbs_ex_modify_qp *cmd, struct ib_udata *udata) 1953 { 1954 struct ib_qp_attr *attr; 1955 struct ib_qp *qp; 1956 int ret; 1957 1958 attr = kmalloc(sizeof *attr, GFP_KERNEL); 1959 if (!attr) 1960 return -ENOMEM; 1961 1962 qp = uobj_get_obj_read(qp, cmd->base.qp_handle, file->ucontext); 1963 if (!qp) { 1964 ret = -EINVAL; 1965 goto out; 1966 } 1967 1968 if ((cmd->base.attr_mask & IB_QP_PORT) && 1969 !rdma_is_port_valid(qp->device, cmd->base.port_num)) { 1970 ret = -EINVAL; 1971 goto release_qp; 1972 } 1973 1974 if ((cmd->base.attr_mask & IB_QP_ALT_PATH) && 1975 !rdma_is_port_valid(qp->device, cmd->base.alt_port_num)) { 1976 ret = -EINVAL; 1977 goto release_qp; 1978 } 1979 1980 attr->qp_state = cmd->base.qp_state; 1981 attr->cur_qp_state = cmd->base.cur_qp_state; 1982 attr->path_mtu = cmd->base.path_mtu; 1983 attr->path_mig_state = cmd->base.path_mig_state; 1984 attr->qkey = cmd->base.qkey; 1985 attr->rq_psn = cmd->base.rq_psn; 1986 attr->sq_psn = cmd->base.sq_psn; 1987 attr->dest_qp_num = cmd->base.dest_qp_num; 1988 attr->qp_access_flags = cmd->base.qp_access_flags; 1989 attr->pkey_index = cmd->base.pkey_index; 1990 attr->alt_pkey_index = cmd->base.alt_pkey_index; 1991 attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify; 1992 attr->max_rd_atomic = cmd->base.max_rd_atomic; 1993 attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic; 1994 attr->min_rnr_timer = cmd->base.min_rnr_timer; 1995 attr->port_num = cmd->base.port_num; 1996 attr->timeout = cmd->base.timeout; 1997 attr->retry_cnt = cmd->base.retry_cnt; 1998 attr->rnr_retry = cmd->base.rnr_retry; 1999 attr->alt_port_num = cmd->base.alt_port_num; 2000 attr->alt_timeout = cmd->base.alt_timeout; 2001 attr->rate_limit = cmd->rate_limit; 2002 2003 if (cmd->base.attr_mask & IB_QP_AV) 2004 copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr, 2005 &cmd->base.dest); 2006 2007 if (cmd->base.attr_mask & IB_QP_ALT_PATH) 2008 copy_ah_attr_from_uverbs(qp->device, &attr->alt_ah_attr, 2009 &cmd->base.alt_dest); 2010 2011 ret = ib_modify_qp_with_udata(qp, attr, 2012 modify_qp_mask(qp->qp_type, 2013 cmd->base.attr_mask), 2014 udata); 2015 2016 release_qp: 2017 uobj_put_obj_read(qp); 2018 out: 2019 kfree(attr); 2020 2021 return ret; 2022 } 2023 2024 ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, 2025 struct ib_device *ib_dev, 2026 const char __user *buf, int in_len, 2027 int out_len) 2028 { 2029 struct ib_uverbs_ex_modify_qp cmd = {}; 2030 struct ib_udata udata; 2031 int ret; 2032 2033 if (copy_from_user(&cmd.base, buf, sizeof(cmd.base))) 2034 return -EFAULT; 2035 2036 if (cmd.base.attr_mask & 2037 ~((IB_USER_LEGACY_LAST_QP_ATTR_MASK << 1) - 1)) 2038 return -EOPNOTSUPP; 2039 2040 ib_uverbs_init_udata(&udata, buf + sizeof(cmd.base), NULL, 2041 in_len - sizeof(cmd.base) - sizeof(struct ib_uverbs_cmd_hdr), 2042 out_len); 2043 2044 ret = modify_qp(file, &cmd, &udata); 2045 if (ret) 2046 return ret; 2047 2048 return in_len; 2049 } 2050 2051 int ib_uverbs_ex_modify_qp(struct ib_uverbs_file *file, 2052 struct ib_device *ib_dev, 2053 struct ib_udata *ucore, 2054 struct ib_udata *uhw) 2055 { 2056 struct ib_uverbs_ex_modify_qp cmd = {}; 2057 int ret; 2058 2059 /* 2060 * Last bit is reserved for extending the attr_mask by 2061 * using another field. 2062 */ 2063 BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1 << 31)); 2064 2065 if (ucore->inlen < sizeof(cmd.base)) 2066 return -EINVAL; 2067 2068 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); 2069 if (ret) 2070 return ret; 2071 2072 if (cmd.base.attr_mask & 2073 ~((IB_USER_LAST_QP_ATTR_MASK << 1) - 1)) 2074 return -EOPNOTSUPP; 2075 2076 if (ucore->inlen > sizeof(cmd)) { 2077 if (!ib_is_udata_cleared(ucore, sizeof(cmd), 2078 ucore->inlen - sizeof(cmd))) 2079 return -EOPNOTSUPP; 2080 } 2081 2082 ret = modify_qp(file, &cmd, uhw); 2083 2084 return ret; 2085 } 2086 2087 ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, 2088 struct ib_device *ib_dev, 2089 const char __user *buf, int in_len, 2090 int out_len) 2091 { 2092 struct ib_uverbs_destroy_qp cmd; 2093 struct ib_uverbs_destroy_qp_resp resp; 2094 struct ib_uobject *uobj; 2095 struct ib_uqp_object *obj; 2096 int ret = -EINVAL; 2097 2098 if (copy_from_user(&cmd, buf, sizeof cmd)) 2099 return -EFAULT; 2100 2101 memset(&resp, 0, sizeof resp); 2102 2103 uobj = uobj_get_write(uobj_get_type(qp), cmd.qp_handle, 2104 file->ucontext); 2105 if (IS_ERR(uobj)) 2106 return PTR_ERR(uobj); 2107 2108 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); 2109 /* 2110 * Make sure we don't free the memory in remove_commit as we still 2111 * needs the uobject memory to create the response. 2112 */ 2113 uverbs_uobject_get(uobj); 2114 2115 ret = uobj_remove_commit(uobj); 2116 if (ret) { 2117 uverbs_uobject_put(uobj); 2118 return ret; 2119 } 2120 2121 resp.events_reported = obj->uevent.events_reported; 2122 uverbs_uobject_put(uobj); 2123 2124 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) 2125 return -EFAULT; 2126 2127 return in_len; 2128 } 2129 2130 static void *alloc_wr(size_t wr_size, __u32 num_sge) 2131 { 2132 if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof (struct ib_sge))) / 2133 sizeof (struct ib_sge)) 2134 return NULL; 2135 2136 return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) + 2137 num_sge * sizeof (struct ib_sge), GFP_KERNEL); 2138 } 2139 2140 ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, 2141 struct ib_device *ib_dev, 2142 const char __user *buf, int in_len, 2143 int out_len) 2144 { 2145 struct ib_uverbs_post_send cmd; 2146 struct ib_uverbs_post_send_resp resp; 2147 struct ib_uverbs_send_wr *user_wr; 2148 struct ib_send_wr *wr = NULL, *last, *next, *bad_wr; 2149 struct ib_qp *qp; 2150 int i, sg_ind; 2151 int is_ud; 2152 ssize_t ret = -EINVAL; 2153 size_t next_size; 2154 2155 if (copy_from_user(&cmd, buf, sizeof cmd)) 2156 return -EFAULT; 2157 2158 if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + 2159 cmd.sge_count * sizeof (struct ib_uverbs_sge)) 2160 return -EINVAL; 2161 2162 if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) 2163 return -EINVAL; 2164 2165 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); 2166 if (!user_wr) 2167 return -ENOMEM; 2168 2169 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext); 2170 if (!qp) 2171 goto out; 2172 2173 is_ud = qp->qp_type == IB_QPT_UD; 2174 sg_ind = 0; 2175 last = NULL; 2176 for (i = 0; i < cmd.wr_count; ++i) { 2177 if (copy_from_user(user_wr, 2178 buf + sizeof cmd + i * cmd.wqe_size, 2179 cmd.wqe_size)) { 2180 ret = -EFAULT; 2181 goto out_put; 2182 } 2183 2184 if (user_wr->num_sge + sg_ind > cmd.sge_count) { 2185 ret = -EINVAL; 2186 goto out_put; 2187 } 2188 2189 if (is_ud) { 2190 struct ib_ud_wr *ud; 2191 2192 if (user_wr->opcode != IB_WR_SEND && 2193 user_wr->opcode != IB_WR_SEND_WITH_IMM) { 2194 ret = -EINVAL; 2195 goto out_put; 2196 } 2197 2198 next_size = sizeof(*ud); 2199 ud = alloc_wr(next_size, user_wr->num_sge); 2200 if (!ud) { 2201 ret = -ENOMEM; 2202 goto out_put; 2203 } 2204 2205 ud->ah = uobj_get_obj_read(ah, user_wr->wr.ud.ah, 2206 file->ucontext); 2207 if (!ud->ah) { 2208 kfree(ud); 2209 ret = -EINVAL; 2210 goto out_put; 2211 } 2212 ud->remote_qpn = user_wr->wr.ud.remote_qpn; 2213 ud->remote_qkey = user_wr->wr.ud.remote_qkey; 2214 2215 next = &ud->wr; 2216 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM || 2217 user_wr->opcode == IB_WR_RDMA_WRITE || 2218 user_wr->opcode == IB_WR_RDMA_READ) { 2219 struct ib_rdma_wr *rdma; 2220 2221 next_size = sizeof(*rdma); 2222 rdma = alloc_wr(next_size, user_wr->num_sge); 2223 if (!rdma) { 2224 ret = -ENOMEM; 2225 goto out_put; 2226 } 2227 2228 rdma->remote_addr = user_wr->wr.rdma.remote_addr; 2229 rdma->rkey = user_wr->wr.rdma.rkey; 2230 2231 next = &rdma->wr; 2232 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP || 2233 user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) { 2234 struct ib_atomic_wr *atomic; 2235 2236 next_size = sizeof(*atomic); 2237 atomic = alloc_wr(next_size, user_wr->num_sge); 2238 if (!atomic) { 2239 ret = -ENOMEM; 2240 goto out_put; 2241 } 2242 2243 atomic->remote_addr = user_wr->wr.atomic.remote_addr; 2244 atomic->compare_add = user_wr->wr.atomic.compare_add; 2245 atomic->swap = user_wr->wr.atomic.swap; 2246 atomic->rkey = user_wr->wr.atomic.rkey; 2247 2248 next = &atomic->wr; 2249 } else if (user_wr->opcode == IB_WR_SEND || 2250 user_wr->opcode == IB_WR_SEND_WITH_IMM || 2251 user_wr->opcode == IB_WR_SEND_WITH_INV) { 2252 next_size = sizeof(*next); 2253 next = alloc_wr(next_size, user_wr->num_sge); 2254 if (!next) { 2255 ret = -ENOMEM; 2256 goto out_put; 2257 } 2258 } else { 2259 ret = -EINVAL; 2260 goto out_put; 2261 } 2262 2263 if (user_wr->opcode == IB_WR_SEND_WITH_IMM || 2264 user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) { 2265 next->ex.imm_data = 2266 (__be32 __force) user_wr->ex.imm_data; 2267 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) { 2268 next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey; 2269 } 2270 2271 if (!last) 2272 wr = next; 2273 else 2274 last->next = next; 2275 last = next; 2276 2277 next->next = NULL; 2278 next->wr_id = user_wr->wr_id; 2279 next->num_sge = user_wr->num_sge; 2280 next->opcode = user_wr->opcode; 2281 next->send_flags = user_wr->send_flags; 2282 2283 if (next->num_sge) { 2284 next->sg_list = (void *) next + 2285 ALIGN(next_size, sizeof(struct ib_sge)); 2286 if (copy_from_user(next->sg_list, 2287 buf + sizeof cmd + 2288 cmd.wr_count * cmd.wqe_size + 2289 sg_ind * sizeof (struct ib_sge), 2290 next->num_sge * sizeof (struct ib_sge))) { 2291 ret = -EFAULT; 2292 goto out_put; 2293 } 2294 sg_ind += next->num_sge; 2295 } else 2296 next->sg_list = NULL; 2297 } 2298 2299 resp.bad_wr = 0; 2300 ret = qp->device->post_send(qp->real_qp, wr, &bad_wr); 2301 if (ret) 2302 for (next = wr; next; next = next->next) { 2303 ++resp.bad_wr; 2304 if (next == bad_wr) 2305 break; 2306 } 2307 2308 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) 2309 ret = -EFAULT; 2310 2311 out_put: 2312 uobj_put_obj_read(qp); 2313 2314 while (wr) { 2315 if (is_ud && ud_wr(wr)->ah) 2316 uobj_put_obj_read(ud_wr(wr)->ah); 2317 next = wr->next; 2318 kfree(wr); 2319 wr = next; 2320 } 2321 2322 out: 2323 kfree(user_wr); 2324 2325 return ret ? ret : in_len; 2326 } 2327 2328 static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, 2329 int in_len, 2330 u32 wr_count, 2331 u32 sge_count, 2332 u32 wqe_size) 2333 { 2334 struct ib_uverbs_recv_wr *user_wr; 2335 struct ib_recv_wr *wr = NULL, *last, *next; 2336 int sg_ind; 2337 int i; 2338 int ret; 2339 2340 if (in_len < wqe_size * wr_count + 2341 sge_count * sizeof (struct ib_uverbs_sge)) 2342 return ERR_PTR(-EINVAL); 2343 2344 if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) 2345 return ERR_PTR(-EINVAL); 2346 2347 user_wr = kmalloc(wqe_size, GFP_KERNEL); 2348 if (!user_wr) 2349 return ERR_PTR(-ENOMEM); 2350 2351 sg_ind = 0; 2352 last = NULL; 2353 for (i = 0; i < wr_count; ++i) { 2354 if (copy_from_user(user_wr, buf + i * wqe_size, 2355 wqe_size)) { 2356 ret = -EFAULT; 2357 goto err; 2358 } 2359 2360 if (user_wr->num_sge + sg_ind > sge_count) { 2361 ret = -EINVAL; 2362 goto err; 2363 } 2364 2365 if (user_wr->num_sge >= 2366 (U32_MAX - ALIGN(sizeof *next, sizeof (struct ib_sge))) / 2367 sizeof (struct ib_sge)) { 2368 ret = -EINVAL; 2369 goto err; 2370 } 2371 2372 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + 2373 user_wr->num_sge * sizeof (struct ib_sge), 2374 GFP_KERNEL); 2375 if (!next) { 2376 ret = -ENOMEM; 2377 goto err; 2378 } 2379 2380 if (!last) 2381 wr = next; 2382 else 2383 last->next = next; 2384 last = next; 2385 2386 next->next = NULL; 2387 next->wr_id = user_wr->wr_id; 2388 next->num_sge = user_wr->num_sge; 2389 2390 if (next->num_sge) { 2391 next->sg_list = (void *) next + 2392 ALIGN(sizeof *next, sizeof (struct ib_sge)); 2393 if (copy_from_user(next->sg_list, 2394 buf + wr_count * wqe_size + 2395 sg_ind * sizeof (struct ib_sge), 2396 next->num_sge * sizeof (struct ib_sge))) { 2397 ret = -EFAULT; 2398 goto err; 2399 } 2400 sg_ind += next->num_sge; 2401 } else 2402 next->sg_list = NULL; 2403 } 2404 2405 kfree(user_wr); 2406 return wr; 2407 2408 err: 2409 kfree(user_wr); 2410 2411 while (wr) { 2412 next = wr->next; 2413 kfree(wr); 2414 wr = next; 2415 } 2416 2417 return ERR_PTR(ret); 2418 } 2419 2420 ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, 2421 struct ib_device *ib_dev, 2422 const char __user *buf, int in_len, 2423 int out_len) 2424 { 2425 struct ib_uverbs_post_recv cmd; 2426 struct ib_uverbs_post_recv_resp resp; 2427 struct ib_recv_wr *wr, *next, *bad_wr; 2428 struct ib_qp *qp; 2429 ssize_t ret = -EINVAL; 2430 2431 if (copy_from_user(&cmd, buf, sizeof cmd)) 2432 return -EFAULT; 2433 2434 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, 2435 in_len - sizeof cmd, cmd.wr_count, 2436 cmd.sge_count, cmd.wqe_size); 2437 if (IS_ERR(wr)) 2438 return PTR_ERR(wr); 2439 2440 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext); 2441 if (!qp) 2442 goto out; 2443 2444 resp.bad_wr = 0; 2445 ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr); 2446 2447 uobj_put_obj_read(qp); 2448 if (ret) { 2449 for (next = wr; next; next = next->next) { 2450 ++resp.bad_wr; 2451 if (next == bad_wr) 2452 break; 2453 } 2454 } 2455 2456 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) 2457 ret = -EFAULT; 2458 2459 out: 2460 while (wr) { 2461 next = wr->next; 2462 kfree(wr); 2463 wr = next; 2464 } 2465 2466 return ret ? ret : in_len; 2467 } 2468 2469 ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, 2470 struct ib_device *ib_dev, 2471 const char __user *buf, int in_len, 2472 int out_len) 2473 { 2474 struct ib_uverbs_post_srq_recv cmd; 2475 struct ib_uverbs_post_srq_recv_resp resp; 2476 struct ib_recv_wr *wr, *next, *bad_wr; 2477 struct ib_srq *srq; 2478 ssize_t ret = -EINVAL; 2479 2480 if (copy_from_user(&cmd, buf, sizeof cmd)) 2481 return -EFAULT; 2482 2483 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, 2484 in_len - sizeof cmd, cmd.wr_count, 2485 cmd.sge_count, cmd.wqe_size); 2486 if (IS_ERR(wr)) 2487 return PTR_ERR(wr); 2488 2489 srq = uobj_get_obj_read(srq, cmd.srq_handle, file->ucontext); 2490 if (!srq) 2491 goto out; 2492 2493 resp.bad_wr = 0; 2494 ret = srq->device->post_srq_recv(srq, wr, &bad_wr); 2495 2496 uobj_put_obj_read(srq); 2497 2498 if (ret) 2499 for (next = wr; next; next = next->next) { 2500 ++resp.bad_wr; 2501 if (next == bad_wr) 2502 break; 2503 } 2504 2505 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) 2506 ret = -EFAULT; 2507 2508 out: 2509 while (wr) { 2510 next = wr->next; 2511 kfree(wr); 2512 wr = next; 2513 } 2514 2515 return ret ? ret : in_len; 2516 } 2517 2518 ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, 2519 struct ib_device *ib_dev, 2520 const char __user *buf, int in_len, 2521 int out_len) 2522 { 2523 struct ib_uverbs_create_ah cmd; 2524 struct ib_uverbs_create_ah_resp resp; 2525 struct ib_uobject *uobj; 2526 struct ib_pd *pd; 2527 struct ib_ah *ah; 2528 struct rdma_ah_attr attr; 2529 int ret; 2530 struct ib_udata udata; 2531 2532 if (out_len < sizeof resp) 2533 return -ENOSPC; 2534 2535 if (copy_from_user(&cmd, buf, sizeof cmd)) 2536 return -EFAULT; 2537 2538 if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num)) 2539 return -EINVAL; 2540 2541 ib_uverbs_init_udata(&udata, buf + sizeof(cmd), 2542 u64_to_user_ptr(cmd.response) + sizeof(resp), 2543 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), 2544 out_len - sizeof(resp)); 2545 2546 uobj = uobj_alloc(uobj_get_type(ah), file->ucontext); 2547 if (IS_ERR(uobj)) 2548 return PTR_ERR(uobj); 2549 2550 pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext); 2551 if (!pd) { 2552 ret = -EINVAL; 2553 goto err; 2554 } 2555 2556 attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num); 2557 rdma_ah_set_make_grd(&attr, false); 2558 rdma_ah_set_dlid(&attr, cmd.attr.dlid); 2559 rdma_ah_set_sl(&attr, cmd.attr.sl); 2560 rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits); 2561 rdma_ah_set_static_rate(&attr, cmd.attr.static_rate); 2562 rdma_ah_set_port_num(&attr, cmd.attr.port_num); 2563 2564 if (cmd.attr.is_global) { 2565 rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label, 2566 cmd.attr.grh.sgid_index, 2567 cmd.attr.grh.hop_limit, 2568 cmd.attr.grh.traffic_class); 2569 rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid); 2570 } else { 2571 rdma_ah_set_ah_flags(&attr, 0); 2572 } 2573 2574 ah = rdma_create_user_ah(pd, &attr, &udata); 2575 if (IS_ERR(ah)) { 2576 ret = PTR_ERR(ah); 2577 goto err_put; 2578 } 2579 2580 ah->uobject = uobj; 2581 uobj->user_handle = cmd.user_handle; 2582 uobj->object = ah; 2583 2584 resp.ah_handle = uobj->id; 2585 2586 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) { 2587 ret = -EFAULT; 2588 goto err_copy; 2589 } 2590 2591 uobj_put_obj_read(pd); 2592 uobj_alloc_commit(uobj); 2593 2594 return in_len; 2595 2596 err_copy: 2597 rdma_destroy_ah(ah); 2598 2599 err_put: 2600 uobj_put_obj_read(pd); 2601 2602 err: 2603 uobj_alloc_abort(uobj); 2604 return ret; 2605 } 2606 2607 ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, 2608 struct ib_device *ib_dev, 2609 const char __user *buf, int in_len, int out_len) 2610 { 2611 struct ib_uverbs_destroy_ah cmd; 2612 struct ib_uobject *uobj; 2613 int ret; 2614 2615 if (copy_from_user(&cmd, buf, sizeof cmd)) 2616 return -EFAULT; 2617 2618 uobj = uobj_get_write(uobj_get_type(ah), cmd.ah_handle, 2619 file->ucontext); 2620 if (IS_ERR(uobj)) 2621 return PTR_ERR(uobj); 2622 2623 ret = uobj_remove_commit(uobj); 2624 return ret ?: in_len; 2625 } 2626 2627 ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, 2628 struct ib_device *ib_dev, 2629 const char __user *buf, int in_len, 2630 int out_len) 2631 { 2632 struct ib_uverbs_attach_mcast cmd; 2633 struct ib_qp *qp; 2634 struct ib_uqp_object *obj; 2635 struct ib_uverbs_mcast_entry *mcast; 2636 int ret; 2637 2638 if (copy_from_user(&cmd, buf, sizeof cmd)) 2639 return -EFAULT; 2640 2641 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext); 2642 if (!qp) 2643 return -EINVAL; 2644 2645 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); 2646 2647 mutex_lock(&obj->mcast_lock); 2648 list_for_each_entry(mcast, &obj->mcast_list, list) 2649 if (cmd.mlid == mcast->lid && 2650 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { 2651 ret = 0; 2652 goto out_put; 2653 } 2654 2655 mcast = kmalloc(sizeof *mcast, GFP_KERNEL); 2656 if (!mcast) { 2657 ret = -ENOMEM; 2658 goto out_put; 2659 } 2660 2661 mcast->lid = cmd.mlid; 2662 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); 2663 2664 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); 2665 if (!ret) 2666 list_add_tail(&mcast->list, &obj->mcast_list); 2667 else 2668 kfree(mcast); 2669 2670 out_put: 2671 mutex_unlock(&obj->mcast_lock); 2672 uobj_put_obj_read(qp); 2673 2674 return ret ? ret : in_len; 2675 } 2676 2677 ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, 2678 struct ib_device *ib_dev, 2679 const char __user *buf, int in_len, 2680 int out_len) 2681 { 2682 struct ib_uverbs_detach_mcast cmd; 2683 struct ib_uqp_object *obj; 2684 struct ib_qp *qp; 2685 struct ib_uverbs_mcast_entry *mcast; 2686 int ret = -EINVAL; 2687 bool found = false; 2688 2689 if (copy_from_user(&cmd, buf, sizeof cmd)) 2690 return -EFAULT; 2691 2692 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext); 2693 if (!qp) 2694 return -EINVAL; 2695 2696 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); 2697 mutex_lock(&obj->mcast_lock); 2698 2699 list_for_each_entry(mcast, &obj->mcast_list, list) 2700 if (cmd.mlid == mcast->lid && 2701 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { 2702 list_del(&mcast->list); 2703 kfree(mcast); 2704 found = true; 2705 break; 2706 } 2707 2708 if (!found) { 2709 ret = -EINVAL; 2710 goto out_put; 2711 } 2712 2713 ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid); 2714 2715 out_put: 2716 mutex_unlock(&obj->mcast_lock); 2717 uobj_put_obj_read(qp); 2718 return ret ? ret : in_len; 2719 } 2720 2721 static int kern_spec_to_ib_spec_action(struct ib_uverbs_flow_spec *kern_spec, 2722 union ib_flow_spec *ib_spec) 2723 { 2724 ib_spec->type = kern_spec->type; 2725 switch (ib_spec->type) { 2726 case IB_FLOW_SPEC_ACTION_TAG: 2727 if (kern_spec->flow_tag.size != 2728 sizeof(struct ib_uverbs_flow_spec_action_tag)) 2729 return -EINVAL; 2730 2731 ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag); 2732 ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id; 2733 break; 2734 case IB_FLOW_SPEC_ACTION_DROP: 2735 if (kern_spec->drop.size != 2736 sizeof(struct ib_uverbs_flow_spec_action_drop)) 2737 return -EINVAL; 2738 2739 ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop); 2740 break; 2741 default: 2742 return -EINVAL; 2743 } 2744 return 0; 2745 } 2746 2747 static size_t kern_spec_filter_sz(struct ib_uverbs_flow_spec_hdr *spec) 2748 { 2749 /* Returns user space filter size, includes padding */ 2750 return (spec->size - sizeof(struct ib_uverbs_flow_spec_hdr)) / 2; 2751 } 2752 2753 static ssize_t spec_filter_size(void *kern_spec_filter, u16 kern_filter_size, 2754 u16 ib_real_filter_sz) 2755 { 2756 /* 2757 * User space filter structures must be 64 bit aligned, otherwise this 2758 * may pass, but we won't handle additional new attributes. 2759 */ 2760 2761 if (kern_filter_size > ib_real_filter_sz) { 2762 if (memchr_inv(kern_spec_filter + 2763 ib_real_filter_sz, 0, 2764 kern_filter_size - ib_real_filter_sz)) 2765 return -EINVAL; 2766 return ib_real_filter_sz; 2767 } 2768 return kern_filter_size; 2769 } 2770 2771 static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec, 2772 union ib_flow_spec *ib_spec) 2773 { 2774 ssize_t actual_filter_sz; 2775 ssize_t kern_filter_sz; 2776 ssize_t ib_filter_sz; 2777 void *kern_spec_mask; 2778 void *kern_spec_val; 2779 2780 if (kern_spec->reserved) 2781 return -EINVAL; 2782 2783 ib_spec->type = kern_spec->type; 2784 2785 kern_filter_sz = kern_spec_filter_sz(&kern_spec->hdr); 2786 /* User flow spec size must be aligned to 4 bytes */ 2787 if (kern_filter_sz != ALIGN(kern_filter_sz, 4)) 2788 return -EINVAL; 2789 2790 kern_spec_val = (void *)kern_spec + 2791 sizeof(struct ib_uverbs_flow_spec_hdr); 2792 kern_spec_mask = kern_spec_val + kern_filter_sz; 2793 if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL)) 2794 return -EINVAL; 2795 2796 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) { 2797 case IB_FLOW_SPEC_ETH: 2798 ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz); 2799 actual_filter_sz = spec_filter_size(kern_spec_mask, 2800 kern_filter_sz, 2801 ib_filter_sz); 2802 if (actual_filter_sz <= 0) 2803 return -EINVAL; 2804 ib_spec->size = sizeof(struct ib_flow_spec_eth); 2805 memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz); 2806 memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz); 2807 break; 2808 case IB_FLOW_SPEC_IPV4: 2809 ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz); 2810 actual_filter_sz = spec_filter_size(kern_spec_mask, 2811 kern_filter_sz, 2812 ib_filter_sz); 2813 if (actual_filter_sz <= 0) 2814 return -EINVAL; 2815 ib_spec->size = sizeof(struct ib_flow_spec_ipv4); 2816 memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz); 2817 memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz); 2818 break; 2819 case IB_FLOW_SPEC_IPV6: 2820 ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz); 2821 actual_filter_sz = spec_filter_size(kern_spec_mask, 2822 kern_filter_sz, 2823 ib_filter_sz); 2824 if (actual_filter_sz <= 0) 2825 return -EINVAL; 2826 ib_spec->size = sizeof(struct ib_flow_spec_ipv6); 2827 memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz); 2828 memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz); 2829 2830 if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) || 2831 (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20)) 2832 return -EINVAL; 2833 break; 2834 case IB_FLOW_SPEC_TCP: 2835 case IB_FLOW_SPEC_UDP: 2836 ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz); 2837 actual_filter_sz = spec_filter_size(kern_spec_mask, 2838 kern_filter_sz, 2839 ib_filter_sz); 2840 if (actual_filter_sz <= 0) 2841 return -EINVAL; 2842 ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp); 2843 memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz); 2844 memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz); 2845 break; 2846 case IB_FLOW_SPEC_VXLAN_TUNNEL: 2847 ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz); 2848 actual_filter_sz = spec_filter_size(kern_spec_mask, 2849 kern_filter_sz, 2850 ib_filter_sz); 2851 if (actual_filter_sz <= 0) 2852 return -EINVAL; 2853 ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel); 2854 memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz); 2855 memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz); 2856 2857 if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) || 2858 (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24)) 2859 return -EINVAL; 2860 break; 2861 default: 2862 return -EINVAL; 2863 } 2864 return 0; 2865 } 2866 2867 static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec, 2868 union ib_flow_spec *ib_spec) 2869 { 2870 if (kern_spec->reserved) 2871 return -EINVAL; 2872 2873 if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG) 2874 return kern_spec_to_ib_spec_action(kern_spec, ib_spec); 2875 else 2876 return kern_spec_to_ib_spec_filter(kern_spec, ib_spec); 2877 } 2878 2879 int ib_uverbs_ex_create_wq(struct ib_uverbs_file *file, 2880 struct ib_device *ib_dev, 2881 struct ib_udata *ucore, 2882 struct ib_udata *uhw) 2883 { 2884 struct ib_uverbs_ex_create_wq cmd = {}; 2885 struct ib_uverbs_ex_create_wq_resp resp = {}; 2886 struct ib_uwq_object *obj; 2887 int err = 0; 2888 struct ib_cq *cq; 2889 struct ib_pd *pd; 2890 struct ib_wq *wq; 2891 struct ib_wq_init_attr wq_init_attr = {}; 2892 size_t required_cmd_sz; 2893 size_t required_resp_len; 2894 2895 required_cmd_sz = offsetof(typeof(cmd), max_sge) + sizeof(cmd.max_sge); 2896 required_resp_len = offsetof(typeof(resp), wqn) + sizeof(resp.wqn); 2897 2898 if (ucore->inlen < required_cmd_sz) 2899 return -EINVAL; 2900 2901 if (ucore->outlen < required_resp_len) 2902 return -ENOSPC; 2903 2904 if (ucore->inlen > sizeof(cmd) && 2905 !ib_is_udata_cleared(ucore, sizeof(cmd), 2906 ucore->inlen - sizeof(cmd))) 2907 return -EOPNOTSUPP; 2908 2909 err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); 2910 if (err) 2911 return err; 2912 2913 if (cmd.comp_mask) 2914 return -EOPNOTSUPP; 2915 2916 obj = (struct ib_uwq_object *)uobj_alloc(uobj_get_type(wq), 2917 file->ucontext); 2918 if (IS_ERR(obj)) 2919 return PTR_ERR(obj); 2920 2921 pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext); 2922 if (!pd) { 2923 err = -EINVAL; 2924 goto err_uobj; 2925 } 2926 2927 cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext); 2928 if (!cq) { 2929 err = -EINVAL; 2930 goto err_put_pd; 2931 } 2932 2933 wq_init_attr.cq = cq; 2934 wq_init_attr.max_sge = cmd.max_sge; 2935 wq_init_attr.max_wr = cmd.max_wr; 2936 wq_init_attr.wq_context = file; 2937 wq_init_attr.wq_type = cmd.wq_type; 2938 wq_init_attr.event_handler = ib_uverbs_wq_event_handler; 2939 if (ucore->inlen >= (offsetof(typeof(cmd), create_flags) + 2940 sizeof(cmd.create_flags))) 2941 wq_init_attr.create_flags = cmd.create_flags; 2942 obj->uevent.events_reported = 0; 2943 INIT_LIST_HEAD(&obj->uevent.event_list); 2944 wq = pd->device->create_wq(pd, &wq_init_attr, uhw); 2945 if (IS_ERR(wq)) { 2946 err = PTR_ERR(wq); 2947 goto err_put_cq; 2948 } 2949 2950 wq->uobject = &obj->uevent.uobject; 2951 obj->uevent.uobject.object = wq; 2952 wq->wq_type = wq_init_attr.wq_type; 2953 wq->cq = cq; 2954 wq->pd = pd; 2955 wq->device = pd->device; 2956 wq->wq_context = wq_init_attr.wq_context; 2957 atomic_set(&wq->usecnt, 0); 2958 atomic_inc(&pd->usecnt); 2959 atomic_inc(&cq->usecnt); 2960 wq->uobject = &obj->uevent.uobject; 2961 obj->uevent.uobject.object = wq; 2962 2963 memset(&resp, 0, sizeof(resp)); 2964 resp.wq_handle = obj->uevent.uobject.id; 2965 resp.max_sge = wq_init_attr.max_sge; 2966 resp.max_wr = wq_init_attr.max_wr; 2967 resp.wqn = wq->wq_num; 2968 resp.response_length = required_resp_len; 2969 err = ib_copy_to_udata(ucore, 2970 &resp, resp.response_length); 2971 if (err) 2972 goto err_copy; 2973 2974 uobj_put_obj_read(pd); 2975 uobj_put_obj_read(cq); 2976 uobj_alloc_commit(&obj->uevent.uobject); 2977 return 0; 2978 2979 err_copy: 2980 ib_destroy_wq(wq); 2981 err_put_cq: 2982 uobj_put_obj_read(cq); 2983 err_put_pd: 2984 uobj_put_obj_read(pd); 2985 err_uobj: 2986 uobj_alloc_abort(&obj->uevent.uobject); 2987 2988 return err; 2989 } 2990 2991 int ib_uverbs_ex_destroy_wq(struct ib_uverbs_file *file, 2992 struct ib_device *ib_dev, 2993 struct ib_udata *ucore, 2994 struct ib_udata *uhw) 2995 { 2996 struct ib_uverbs_ex_destroy_wq cmd = {}; 2997 struct ib_uverbs_ex_destroy_wq_resp resp = {}; 2998 struct ib_uobject *uobj; 2999 struct ib_uwq_object *obj; 3000 size_t required_cmd_sz; 3001 size_t required_resp_len; 3002 int ret; 3003 3004 required_cmd_sz = offsetof(typeof(cmd), wq_handle) + sizeof(cmd.wq_handle); 3005 required_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved); 3006 3007 if (ucore->inlen < required_cmd_sz) 3008 return -EINVAL; 3009 3010 if (ucore->outlen < required_resp_len) 3011 return -ENOSPC; 3012 3013 if (ucore->inlen > sizeof(cmd) && 3014 !ib_is_udata_cleared(ucore, sizeof(cmd), 3015 ucore->inlen - sizeof(cmd))) 3016 return -EOPNOTSUPP; 3017 3018 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); 3019 if (ret) 3020 return ret; 3021 3022 if (cmd.comp_mask) 3023 return -EOPNOTSUPP; 3024 3025 resp.response_length = required_resp_len; 3026 uobj = uobj_get_write(uobj_get_type(wq), cmd.wq_handle, 3027 file->ucontext); 3028 if (IS_ERR(uobj)) 3029 return PTR_ERR(uobj); 3030 3031 obj = container_of(uobj, struct ib_uwq_object, uevent.uobject); 3032 /* 3033 * Make sure we don't free the memory in remove_commit as we still 3034 * needs the uobject memory to create the response. 3035 */ 3036 uverbs_uobject_get(uobj); 3037 3038 ret = uobj_remove_commit(uobj); 3039 resp.events_reported = obj->uevent.events_reported; 3040 uverbs_uobject_put(uobj); 3041 if (ret) 3042 return ret; 3043 3044 return ib_copy_to_udata(ucore, &resp, resp.response_length); 3045 } 3046 3047 int ib_uverbs_ex_modify_wq(struct ib_uverbs_file *file, 3048 struct ib_device *ib_dev, 3049 struct ib_udata *ucore, 3050 struct ib_udata *uhw) 3051 { 3052 struct ib_uverbs_ex_modify_wq cmd = {}; 3053 struct ib_wq *wq; 3054 struct ib_wq_attr wq_attr = {}; 3055 size_t required_cmd_sz; 3056 int ret; 3057 3058 required_cmd_sz = offsetof(typeof(cmd), curr_wq_state) + sizeof(cmd.curr_wq_state); 3059 if (ucore->inlen < required_cmd_sz) 3060 return -EINVAL; 3061 3062 if (ucore->inlen > sizeof(cmd) && 3063 !ib_is_udata_cleared(ucore, sizeof(cmd), 3064 ucore->inlen - sizeof(cmd))) 3065 return -EOPNOTSUPP; 3066 3067 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); 3068 if (ret) 3069 return ret; 3070 3071 if (!cmd.attr_mask) 3072 return -EINVAL; 3073 3074 if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS)) 3075 return -EINVAL; 3076 3077 wq = uobj_get_obj_read(wq, cmd.wq_handle, file->ucontext); 3078 if (!wq) 3079 return -EINVAL; 3080 3081 wq_attr.curr_wq_state = cmd.curr_wq_state; 3082 wq_attr.wq_state = cmd.wq_state; 3083 if (cmd.attr_mask & IB_WQ_FLAGS) { 3084 wq_attr.flags = cmd.flags; 3085 wq_attr.flags_mask = cmd.flags_mask; 3086 } 3087 ret = wq->device->modify_wq(wq, &wq_attr, cmd.attr_mask, uhw); 3088 uobj_put_obj_read(wq); 3089 return ret; 3090 } 3091 3092 int ib_uverbs_ex_create_rwq_ind_table(struct ib_uverbs_file *file, 3093 struct ib_device *ib_dev, 3094 struct ib_udata *ucore, 3095 struct ib_udata *uhw) 3096 { 3097 struct ib_uverbs_ex_create_rwq_ind_table cmd = {}; 3098 struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {}; 3099 struct ib_uobject *uobj; 3100 int err = 0; 3101 struct ib_rwq_ind_table_init_attr init_attr = {}; 3102 struct ib_rwq_ind_table *rwq_ind_tbl; 3103 struct ib_wq **wqs = NULL; 3104 u32 *wqs_handles = NULL; 3105 struct ib_wq *wq = NULL; 3106 int i, j, num_read_wqs; 3107 u32 num_wq_handles; 3108 u32 expected_in_size; 3109 size_t required_cmd_sz_header; 3110 size_t required_resp_len; 3111 3112 required_cmd_sz_header = offsetof(typeof(cmd), log_ind_tbl_size) + sizeof(cmd.log_ind_tbl_size); 3113 required_resp_len = offsetof(typeof(resp), ind_tbl_num) + sizeof(resp.ind_tbl_num); 3114 3115 if (ucore->inlen < required_cmd_sz_header) 3116 return -EINVAL; 3117 3118 if (ucore->outlen < required_resp_len) 3119 return -ENOSPC; 3120 3121 err = ib_copy_from_udata(&cmd, ucore, required_cmd_sz_header); 3122 if (err) 3123 return err; 3124 3125 ucore->inbuf += required_cmd_sz_header; 3126 ucore->inlen -= required_cmd_sz_header; 3127 3128 if (cmd.comp_mask) 3129 return -EOPNOTSUPP; 3130 3131 if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE) 3132 return -EINVAL; 3133 3134 num_wq_handles = 1 << cmd.log_ind_tbl_size; 3135 expected_in_size = num_wq_handles * sizeof(__u32); 3136 if (num_wq_handles == 1) 3137 /* input size for wq handles is u64 aligned */ 3138 expected_in_size += sizeof(__u32); 3139 3140 if (ucore->inlen < expected_in_size) 3141 return -EINVAL; 3142 3143 if (ucore->inlen > expected_in_size && 3144 !ib_is_udata_cleared(ucore, expected_in_size, 3145 ucore->inlen - expected_in_size)) 3146 return -EOPNOTSUPP; 3147 3148 wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles), 3149 GFP_KERNEL); 3150 if (!wqs_handles) 3151 return -ENOMEM; 3152 3153 err = ib_copy_from_udata(wqs_handles, ucore, 3154 num_wq_handles * sizeof(__u32)); 3155 if (err) 3156 goto err_free; 3157 3158 wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL); 3159 if (!wqs) { 3160 err = -ENOMEM; 3161 goto err_free; 3162 } 3163 3164 for (num_read_wqs = 0; num_read_wqs < num_wq_handles; 3165 num_read_wqs++) { 3166 wq = uobj_get_obj_read(wq, wqs_handles[num_read_wqs], 3167 file->ucontext); 3168 if (!wq) { 3169 err = -EINVAL; 3170 goto put_wqs; 3171 } 3172 3173 wqs[num_read_wqs] = wq; 3174 } 3175 3176 uobj = uobj_alloc(uobj_get_type(rwq_ind_table), file->ucontext); 3177 if (IS_ERR(uobj)) { 3178 err = PTR_ERR(uobj); 3179 goto put_wqs; 3180 } 3181 3182 init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size; 3183 init_attr.ind_tbl = wqs; 3184 rwq_ind_tbl = ib_dev->create_rwq_ind_table(ib_dev, &init_attr, uhw); 3185 3186 if (IS_ERR(rwq_ind_tbl)) { 3187 err = PTR_ERR(rwq_ind_tbl); 3188 goto err_uobj; 3189 } 3190 3191 rwq_ind_tbl->ind_tbl = wqs; 3192 rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size; 3193 rwq_ind_tbl->uobject = uobj; 3194 uobj->object = rwq_ind_tbl; 3195 rwq_ind_tbl->device = ib_dev; 3196 atomic_set(&rwq_ind_tbl->usecnt, 0); 3197 3198 for (i = 0; i < num_wq_handles; i++) 3199 atomic_inc(&wqs[i]->usecnt); 3200 3201 resp.ind_tbl_handle = uobj->id; 3202 resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num; 3203 resp.response_length = required_resp_len; 3204 3205 err = ib_copy_to_udata(ucore, 3206 &resp, resp.response_length); 3207 if (err) 3208 goto err_copy; 3209 3210 kfree(wqs_handles); 3211 3212 for (j = 0; j < num_read_wqs; j++) 3213 uobj_put_obj_read(wqs[j]); 3214 3215 uobj_alloc_commit(uobj); 3216 return 0; 3217 3218 err_copy: 3219 ib_destroy_rwq_ind_table(rwq_ind_tbl); 3220 err_uobj: 3221 uobj_alloc_abort(uobj); 3222 put_wqs: 3223 for (j = 0; j < num_read_wqs; j++) 3224 uobj_put_obj_read(wqs[j]); 3225 err_free: 3226 kfree(wqs_handles); 3227 kfree(wqs); 3228 return err; 3229 } 3230 3231 int ib_uverbs_ex_destroy_rwq_ind_table(struct ib_uverbs_file *file, 3232 struct ib_device *ib_dev, 3233 struct ib_udata *ucore, 3234 struct ib_udata *uhw) 3235 { 3236 struct ib_uverbs_ex_destroy_rwq_ind_table cmd = {}; 3237 struct ib_uobject *uobj; 3238 int ret; 3239 size_t required_cmd_sz; 3240 3241 required_cmd_sz = offsetof(typeof(cmd), ind_tbl_handle) + sizeof(cmd.ind_tbl_handle); 3242 3243 if (ucore->inlen < required_cmd_sz) 3244 return -EINVAL; 3245 3246 if (ucore->inlen > sizeof(cmd) && 3247 !ib_is_udata_cleared(ucore, sizeof(cmd), 3248 ucore->inlen - sizeof(cmd))) 3249 return -EOPNOTSUPP; 3250 3251 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); 3252 if (ret) 3253 return ret; 3254 3255 if (cmd.comp_mask) 3256 return -EOPNOTSUPP; 3257 3258 uobj = uobj_get_write(uobj_get_type(rwq_ind_table), cmd.ind_tbl_handle, 3259 file->ucontext); 3260 if (IS_ERR(uobj)) 3261 return PTR_ERR(uobj); 3262 3263 return uobj_remove_commit(uobj); 3264 } 3265 3266 int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file, 3267 struct ib_device *ib_dev, 3268 struct ib_udata *ucore, 3269 struct ib_udata *uhw) 3270 { 3271 struct ib_uverbs_create_flow cmd; 3272 struct ib_uverbs_create_flow_resp resp; 3273 struct ib_uobject *uobj; 3274 struct ib_flow *flow_id; 3275 struct ib_uverbs_flow_attr *kern_flow_attr; 3276 struct ib_flow_attr *flow_attr; 3277 struct ib_qp *qp; 3278 int err = 0; 3279 void *kern_spec; 3280 void *ib_spec; 3281 int i; 3282 3283 if (ucore->inlen < sizeof(cmd)) 3284 return -EINVAL; 3285 3286 if (ucore->outlen < sizeof(resp)) 3287 return -ENOSPC; 3288 3289 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); 3290 if (err) 3291 return err; 3292 3293 ucore->inbuf += sizeof(cmd); 3294 ucore->inlen -= sizeof(cmd); 3295 3296 if (cmd.comp_mask) 3297 return -EINVAL; 3298 3299 if (!capable(CAP_NET_RAW)) 3300 return -EPERM; 3301 3302 if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED) 3303 return -EINVAL; 3304 3305 if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) && 3306 ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) || 3307 (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT))) 3308 return -EINVAL; 3309 3310 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS) 3311 return -EINVAL; 3312 3313 if (cmd.flow_attr.size > ucore->inlen || 3314 cmd.flow_attr.size > 3315 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec))) 3316 return -EINVAL; 3317 3318 if (cmd.flow_attr.reserved[0] || 3319 cmd.flow_attr.reserved[1]) 3320 return -EINVAL; 3321 3322 if (cmd.flow_attr.num_of_specs) { 3323 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size, 3324 GFP_KERNEL); 3325 if (!kern_flow_attr) 3326 return -ENOMEM; 3327 3328 memcpy(kern_flow_attr, &cmd.flow_attr, sizeof(*kern_flow_attr)); 3329 err = ib_copy_from_udata(kern_flow_attr + 1, ucore, 3330 cmd.flow_attr.size); 3331 if (err) 3332 goto err_free_attr; 3333 } else { 3334 kern_flow_attr = &cmd.flow_attr; 3335 } 3336 3337 uobj = uobj_alloc(uobj_get_type(flow), file->ucontext); 3338 if (IS_ERR(uobj)) { 3339 err = PTR_ERR(uobj); 3340 goto err_free_attr; 3341 } 3342 3343 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext); 3344 if (!qp) { 3345 err = -EINVAL; 3346 goto err_uobj; 3347 } 3348 3349 flow_attr = kzalloc(sizeof(*flow_attr) + cmd.flow_attr.num_of_specs * 3350 sizeof(union ib_flow_spec), GFP_KERNEL); 3351 if (!flow_attr) { 3352 err = -ENOMEM; 3353 goto err_put; 3354 } 3355 3356 flow_attr->type = kern_flow_attr->type; 3357 flow_attr->priority = kern_flow_attr->priority; 3358 flow_attr->num_of_specs = kern_flow_attr->num_of_specs; 3359 flow_attr->port = kern_flow_attr->port; 3360 flow_attr->flags = kern_flow_attr->flags; 3361 flow_attr->size = sizeof(*flow_attr); 3362 3363 kern_spec = kern_flow_attr + 1; 3364 ib_spec = flow_attr + 1; 3365 for (i = 0; i < flow_attr->num_of_specs && 3366 cmd.flow_attr.size > offsetof(struct ib_uverbs_flow_spec, reserved) && 3367 cmd.flow_attr.size >= 3368 ((struct ib_uverbs_flow_spec *)kern_spec)->size; i++) { 3369 err = kern_spec_to_ib_spec(kern_spec, ib_spec); 3370 if (err) 3371 goto err_free; 3372 flow_attr->size += 3373 ((union ib_flow_spec *) ib_spec)->size; 3374 cmd.flow_attr.size -= ((struct ib_uverbs_flow_spec *)kern_spec)->size; 3375 kern_spec += ((struct ib_uverbs_flow_spec *) kern_spec)->size; 3376 ib_spec += ((union ib_flow_spec *) ib_spec)->size; 3377 } 3378 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) { 3379 pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n", 3380 i, cmd.flow_attr.size); 3381 err = -EINVAL; 3382 goto err_free; 3383 } 3384 flow_id = ib_create_flow(qp, flow_attr, IB_FLOW_DOMAIN_USER); 3385 if (IS_ERR(flow_id)) { 3386 err = PTR_ERR(flow_id); 3387 goto err_free; 3388 } 3389 flow_id->uobject = uobj; 3390 uobj->object = flow_id; 3391 3392 memset(&resp, 0, sizeof(resp)); 3393 resp.flow_handle = uobj->id; 3394 3395 err = ib_copy_to_udata(ucore, 3396 &resp, sizeof(resp)); 3397 if (err) 3398 goto err_copy; 3399 3400 uobj_put_obj_read(qp); 3401 uobj_alloc_commit(uobj); 3402 kfree(flow_attr); 3403 if (cmd.flow_attr.num_of_specs) 3404 kfree(kern_flow_attr); 3405 return 0; 3406 err_copy: 3407 ib_destroy_flow(flow_id); 3408 err_free: 3409 kfree(flow_attr); 3410 err_put: 3411 uobj_put_obj_read(qp); 3412 err_uobj: 3413 uobj_alloc_abort(uobj); 3414 err_free_attr: 3415 if (cmd.flow_attr.num_of_specs) 3416 kfree(kern_flow_attr); 3417 return err; 3418 } 3419 3420 int ib_uverbs_ex_destroy_flow(struct ib_uverbs_file *file, 3421 struct ib_device *ib_dev, 3422 struct ib_udata *ucore, 3423 struct ib_udata *uhw) 3424 { 3425 struct ib_uverbs_destroy_flow cmd; 3426 struct ib_uobject *uobj; 3427 int ret; 3428 3429 if (ucore->inlen < sizeof(cmd)) 3430 return -EINVAL; 3431 3432 ret = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); 3433 if (ret) 3434 return ret; 3435 3436 if (cmd.comp_mask) 3437 return -EINVAL; 3438 3439 uobj = uobj_get_write(uobj_get_type(flow), cmd.flow_handle, 3440 file->ucontext); 3441 if (IS_ERR(uobj)) 3442 return PTR_ERR(uobj); 3443 3444 ret = uobj_remove_commit(uobj); 3445 return ret; 3446 } 3447 3448 static int __uverbs_create_xsrq(struct ib_uverbs_file *file, 3449 struct ib_device *ib_dev, 3450 struct ib_uverbs_create_xsrq *cmd, 3451 struct ib_udata *udata) 3452 { 3453 struct ib_uverbs_create_srq_resp resp; 3454 struct ib_usrq_object *obj; 3455 struct ib_pd *pd; 3456 struct ib_srq *srq; 3457 struct ib_uobject *uninitialized_var(xrcd_uobj); 3458 struct ib_srq_init_attr attr; 3459 int ret; 3460 3461 obj = (struct ib_usrq_object *)uobj_alloc(uobj_get_type(srq), 3462 file->ucontext); 3463 if (IS_ERR(obj)) 3464 return PTR_ERR(obj); 3465 3466 if (cmd->srq_type == IB_SRQT_TM) 3467 attr.ext.tag_matching.max_num_tags = cmd->max_num_tags; 3468 3469 if (cmd->srq_type == IB_SRQT_XRC) { 3470 xrcd_uobj = uobj_get_read(uobj_get_type(xrcd), cmd->xrcd_handle, 3471 file->ucontext); 3472 if (IS_ERR(xrcd_uobj)) { 3473 ret = -EINVAL; 3474 goto err; 3475 } 3476 3477 attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object; 3478 if (!attr.ext.xrc.xrcd) { 3479 ret = -EINVAL; 3480 goto err_put_xrcd; 3481 } 3482 3483 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); 3484 atomic_inc(&obj->uxrcd->refcnt); 3485 } 3486 3487 if (ib_srq_has_cq(cmd->srq_type)) { 3488 attr.ext.cq = uobj_get_obj_read(cq, cmd->cq_handle, 3489 file->ucontext); 3490 if (!attr.ext.cq) { 3491 ret = -EINVAL; 3492 goto err_put_xrcd; 3493 } 3494 } 3495 3496 pd = uobj_get_obj_read(pd, cmd->pd_handle, file->ucontext); 3497 if (!pd) { 3498 ret = -EINVAL; 3499 goto err_put_cq; 3500 } 3501 3502 attr.event_handler = ib_uverbs_srq_event_handler; 3503 attr.srq_context = file; 3504 attr.srq_type = cmd->srq_type; 3505 attr.attr.max_wr = cmd->max_wr; 3506 attr.attr.max_sge = cmd->max_sge; 3507 attr.attr.srq_limit = cmd->srq_limit; 3508 3509 obj->uevent.events_reported = 0; 3510 INIT_LIST_HEAD(&obj->uevent.event_list); 3511 3512 srq = pd->device->create_srq(pd, &attr, udata); 3513 if (IS_ERR(srq)) { 3514 ret = PTR_ERR(srq); 3515 goto err_put; 3516 } 3517 3518 srq->device = pd->device; 3519 srq->pd = pd; 3520 srq->srq_type = cmd->srq_type; 3521 srq->uobject = &obj->uevent.uobject; 3522 srq->event_handler = attr.event_handler; 3523 srq->srq_context = attr.srq_context; 3524 3525 if (ib_srq_has_cq(cmd->srq_type)) { 3526 srq->ext.cq = attr.ext.cq; 3527 atomic_inc(&attr.ext.cq->usecnt); 3528 } 3529 3530 if (cmd->srq_type == IB_SRQT_XRC) { 3531 srq->ext.xrc.xrcd = attr.ext.xrc.xrcd; 3532 atomic_inc(&attr.ext.xrc.xrcd->usecnt); 3533 } 3534 3535 atomic_inc(&pd->usecnt); 3536 atomic_set(&srq->usecnt, 0); 3537 3538 obj->uevent.uobject.object = srq; 3539 obj->uevent.uobject.user_handle = cmd->user_handle; 3540 3541 memset(&resp, 0, sizeof resp); 3542 resp.srq_handle = obj->uevent.uobject.id; 3543 resp.max_wr = attr.attr.max_wr; 3544 resp.max_sge = attr.attr.max_sge; 3545 if (cmd->srq_type == IB_SRQT_XRC) 3546 resp.srqn = srq->ext.xrc.srq_num; 3547 3548 if (copy_to_user((void __user *) (unsigned long) cmd->response, 3549 &resp, sizeof resp)) { 3550 ret = -EFAULT; 3551 goto err_copy; 3552 } 3553 3554 if (cmd->srq_type == IB_SRQT_XRC) 3555 uobj_put_read(xrcd_uobj); 3556 3557 if (ib_srq_has_cq(cmd->srq_type)) 3558 uobj_put_obj_read(attr.ext.cq); 3559 3560 uobj_put_obj_read(pd); 3561 uobj_alloc_commit(&obj->uevent.uobject); 3562 3563 return 0; 3564 3565 err_copy: 3566 ib_destroy_srq(srq); 3567 3568 err_put: 3569 uobj_put_obj_read(pd); 3570 3571 err_put_cq: 3572 if (ib_srq_has_cq(cmd->srq_type)) 3573 uobj_put_obj_read(attr.ext.cq); 3574 3575 err_put_xrcd: 3576 if (cmd->srq_type == IB_SRQT_XRC) { 3577 atomic_dec(&obj->uxrcd->refcnt); 3578 uobj_put_read(xrcd_uobj); 3579 } 3580 3581 err: 3582 uobj_alloc_abort(&obj->uevent.uobject); 3583 return ret; 3584 } 3585 3586 ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, 3587 struct ib_device *ib_dev, 3588 const char __user *buf, int in_len, 3589 int out_len) 3590 { 3591 struct ib_uverbs_create_srq cmd; 3592 struct ib_uverbs_create_xsrq xcmd; 3593 struct ib_uverbs_create_srq_resp resp; 3594 struct ib_udata udata; 3595 int ret; 3596 3597 if (out_len < sizeof resp) 3598 return -ENOSPC; 3599 3600 if (copy_from_user(&cmd, buf, sizeof cmd)) 3601 return -EFAULT; 3602 3603 memset(&xcmd, 0, sizeof(xcmd)); 3604 xcmd.response = cmd.response; 3605 xcmd.user_handle = cmd.user_handle; 3606 xcmd.srq_type = IB_SRQT_BASIC; 3607 xcmd.pd_handle = cmd.pd_handle; 3608 xcmd.max_wr = cmd.max_wr; 3609 xcmd.max_sge = cmd.max_sge; 3610 xcmd.srq_limit = cmd.srq_limit; 3611 3612 ib_uverbs_init_udata(&udata, buf + sizeof(cmd), 3613 u64_to_user_ptr(cmd.response) + sizeof(resp), 3614 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), 3615 out_len - sizeof(resp)); 3616 3617 ret = __uverbs_create_xsrq(file, ib_dev, &xcmd, &udata); 3618 if (ret) 3619 return ret; 3620 3621 return in_len; 3622 } 3623 3624 ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file, 3625 struct ib_device *ib_dev, 3626 const char __user *buf, int in_len, int out_len) 3627 { 3628 struct ib_uverbs_create_xsrq cmd; 3629 struct ib_uverbs_create_srq_resp resp; 3630 struct ib_udata udata; 3631 int ret; 3632 3633 if (out_len < sizeof resp) 3634 return -ENOSPC; 3635 3636 if (copy_from_user(&cmd, buf, sizeof cmd)) 3637 return -EFAULT; 3638 3639 ib_uverbs_init_udata(&udata, buf + sizeof(cmd), 3640 u64_to_user_ptr(cmd.response) + sizeof(resp), 3641 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), 3642 out_len - sizeof(resp)); 3643 3644 ret = __uverbs_create_xsrq(file, ib_dev, &cmd, &udata); 3645 if (ret) 3646 return ret; 3647 3648 return in_len; 3649 } 3650 3651 ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, 3652 struct ib_device *ib_dev, 3653 const char __user *buf, int in_len, 3654 int out_len) 3655 { 3656 struct ib_uverbs_modify_srq cmd; 3657 struct ib_udata udata; 3658 struct ib_srq *srq; 3659 struct ib_srq_attr attr; 3660 int ret; 3661 3662 if (copy_from_user(&cmd, buf, sizeof cmd)) 3663 return -EFAULT; 3664 3665 ib_uverbs_init_udata(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, 3666 out_len); 3667 3668 srq = uobj_get_obj_read(srq, cmd.srq_handle, file->ucontext); 3669 if (!srq) 3670 return -EINVAL; 3671 3672 attr.max_wr = cmd.max_wr; 3673 attr.srq_limit = cmd.srq_limit; 3674 3675 ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata); 3676 3677 uobj_put_obj_read(srq); 3678 3679 return ret ? ret : in_len; 3680 } 3681 3682 ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, 3683 struct ib_device *ib_dev, 3684 const char __user *buf, 3685 int in_len, int out_len) 3686 { 3687 struct ib_uverbs_query_srq cmd; 3688 struct ib_uverbs_query_srq_resp resp; 3689 struct ib_srq_attr attr; 3690 struct ib_srq *srq; 3691 int ret; 3692 3693 if (out_len < sizeof resp) 3694 return -ENOSPC; 3695 3696 if (copy_from_user(&cmd, buf, sizeof cmd)) 3697 return -EFAULT; 3698 3699 srq = uobj_get_obj_read(srq, cmd.srq_handle, file->ucontext); 3700 if (!srq) 3701 return -EINVAL; 3702 3703 ret = ib_query_srq(srq, &attr); 3704 3705 uobj_put_obj_read(srq); 3706 3707 if (ret) 3708 return ret; 3709 3710 memset(&resp, 0, sizeof resp); 3711 3712 resp.max_wr = attr.max_wr; 3713 resp.max_sge = attr.max_sge; 3714 resp.srq_limit = attr.srq_limit; 3715 3716 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) 3717 return -EFAULT; 3718 3719 return in_len; 3720 } 3721 3722 ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, 3723 struct ib_device *ib_dev, 3724 const char __user *buf, int in_len, 3725 int out_len) 3726 { 3727 struct ib_uverbs_destroy_srq cmd; 3728 struct ib_uverbs_destroy_srq_resp resp; 3729 struct ib_uobject *uobj; 3730 struct ib_uevent_object *obj; 3731 int ret = -EINVAL; 3732 3733 if (copy_from_user(&cmd, buf, sizeof cmd)) 3734 return -EFAULT; 3735 3736 uobj = uobj_get_write(uobj_get_type(srq), cmd.srq_handle, 3737 file->ucontext); 3738 if (IS_ERR(uobj)) 3739 return PTR_ERR(uobj); 3740 3741 obj = container_of(uobj, struct ib_uevent_object, uobject); 3742 /* 3743 * Make sure we don't free the memory in remove_commit as we still 3744 * needs the uobject memory to create the response. 3745 */ 3746 uverbs_uobject_get(uobj); 3747 3748 memset(&resp, 0, sizeof(resp)); 3749 3750 ret = uobj_remove_commit(uobj); 3751 if (ret) { 3752 uverbs_uobject_put(uobj); 3753 return ret; 3754 } 3755 resp.events_reported = obj->events_reported; 3756 uverbs_uobject_put(uobj); 3757 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof(resp))) 3758 return -EFAULT; 3759 3760 return in_len; 3761 } 3762 3763 int ib_uverbs_ex_query_device(struct ib_uverbs_file *file, 3764 struct ib_device *ib_dev, 3765 struct ib_udata *ucore, 3766 struct ib_udata *uhw) 3767 { 3768 struct ib_uverbs_ex_query_device_resp resp = { {0} }; 3769 struct ib_uverbs_ex_query_device cmd; 3770 struct ib_device_attr attr = {0}; 3771 int err; 3772 3773 if (ucore->inlen < sizeof(cmd)) 3774 return -EINVAL; 3775 3776 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); 3777 if (err) 3778 return err; 3779 3780 if (cmd.comp_mask) 3781 return -EINVAL; 3782 3783 if (cmd.reserved) 3784 return -EINVAL; 3785 3786 resp.response_length = offsetof(typeof(resp), odp_caps); 3787 3788 if (ucore->outlen < resp.response_length) 3789 return -ENOSPC; 3790 3791 err = ib_dev->query_device(ib_dev, &attr, uhw); 3792 if (err) 3793 return err; 3794 3795 copy_query_dev_fields(file, ib_dev, &resp.base, &attr); 3796 3797 if (ucore->outlen < resp.response_length + sizeof(resp.odp_caps)) 3798 goto end; 3799 3800 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING 3801 resp.odp_caps.general_caps = attr.odp_caps.general_caps; 3802 resp.odp_caps.per_transport_caps.rc_odp_caps = 3803 attr.odp_caps.per_transport_caps.rc_odp_caps; 3804 resp.odp_caps.per_transport_caps.uc_odp_caps = 3805 attr.odp_caps.per_transport_caps.uc_odp_caps; 3806 resp.odp_caps.per_transport_caps.ud_odp_caps = 3807 attr.odp_caps.per_transport_caps.ud_odp_caps; 3808 #endif 3809 resp.response_length += sizeof(resp.odp_caps); 3810 3811 if (ucore->outlen < resp.response_length + sizeof(resp.timestamp_mask)) 3812 goto end; 3813 3814 resp.timestamp_mask = attr.timestamp_mask; 3815 resp.response_length += sizeof(resp.timestamp_mask); 3816 3817 if (ucore->outlen < resp.response_length + sizeof(resp.hca_core_clock)) 3818 goto end; 3819 3820 resp.hca_core_clock = attr.hca_core_clock; 3821 resp.response_length += sizeof(resp.hca_core_clock); 3822 3823 if (ucore->outlen < resp.response_length + sizeof(resp.device_cap_flags_ex)) 3824 goto end; 3825 3826 resp.device_cap_flags_ex = attr.device_cap_flags; 3827 resp.response_length += sizeof(resp.device_cap_flags_ex); 3828 3829 if (ucore->outlen < resp.response_length + sizeof(resp.rss_caps)) 3830 goto end; 3831 3832 resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts; 3833 resp.rss_caps.max_rwq_indirection_tables = 3834 attr.rss_caps.max_rwq_indirection_tables; 3835 resp.rss_caps.max_rwq_indirection_table_size = 3836 attr.rss_caps.max_rwq_indirection_table_size; 3837 3838 resp.response_length += sizeof(resp.rss_caps); 3839 3840 if (ucore->outlen < resp.response_length + sizeof(resp.max_wq_type_rq)) 3841 goto end; 3842 3843 resp.max_wq_type_rq = attr.max_wq_type_rq; 3844 resp.response_length += sizeof(resp.max_wq_type_rq); 3845 3846 if (ucore->outlen < resp.response_length + sizeof(resp.raw_packet_caps)) 3847 goto end; 3848 3849 resp.raw_packet_caps = attr.raw_packet_caps; 3850 resp.response_length += sizeof(resp.raw_packet_caps); 3851 3852 if (ucore->outlen < resp.response_length + sizeof(resp.tm_caps)) 3853 goto end; 3854 3855 resp.tm_caps.max_rndv_hdr_size = attr.tm_caps.max_rndv_hdr_size; 3856 resp.tm_caps.max_num_tags = attr.tm_caps.max_num_tags; 3857 resp.tm_caps.max_ops = attr.tm_caps.max_ops; 3858 resp.tm_caps.max_sge = attr.tm_caps.max_sge; 3859 resp.tm_caps.flags = attr.tm_caps.flags; 3860 resp.response_length += sizeof(resp.tm_caps); 3861 3862 if (ucore->outlen < resp.response_length + sizeof(resp.cq_moderation_caps)) 3863 goto end; 3864 3865 resp.cq_moderation_caps.max_cq_moderation_count = 3866 attr.cq_caps.max_cq_moderation_count; 3867 resp.cq_moderation_caps.max_cq_moderation_period = 3868 attr.cq_caps.max_cq_moderation_period; 3869 resp.response_length += sizeof(resp.cq_moderation_caps); 3870 end: 3871 err = ib_copy_to_udata(ucore, &resp, resp.response_length); 3872 return err; 3873 } 3874 3875 int ib_uverbs_ex_modify_cq(struct ib_uverbs_file *file, 3876 struct ib_device *ib_dev, 3877 struct ib_udata *ucore, 3878 struct ib_udata *uhw) 3879 { 3880 struct ib_uverbs_ex_modify_cq cmd = {}; 3881 struct ib_cq *cq; 3882 size_t required_cmd_sz; 3883 int ret; 3884 3885 required_cmd_sz = offsetof(typeof(cmd), reserved) + 3886 sizeof(cmd.reserved); 3887 if (ucore->inlen < required_cmd_sz) 3888 return -EINVAL; 3889 3890 /* sanity checks */ 3891 if (ucore->inlen > sizeof(cmd) && 3892 !ib_is_udata_cleared(ucore, sizeof(cmd), 3893 ucore->inlen - sizeof(cmd))) 3894 return -EOPNOTSUPP; 3895 3896 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); 3897 if (ret) 3898 return ret; 3899 3900 if (!cmd.attr_mask || cmd.reserved) 3901 return -EINVAL; 3902 3903 if (cmd.attr_mask > IB_CQ_MODERATE) 3904 return -EOPNOTSUPP; 3905 3906 cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext); 3907 if (!cq) 3908 return -EINVAL; 3909 3910 ret = rdma_set_cq_moderation(cq, cmd.attr.cq_count, cmd.attr.cq_period); 3911 3912 uobj_put_obj_read(cq); 3913 3914 return ret; 3915 } 3916