uverbs_cmd.c

   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/ib_ucaps.h>
  46#include "rdma_core.h"
  47
  48#include "uverbs.h"
  49#include "core_priv.h"
  50
  51/*
  52 * Copy a response to userspace. If the provided 'resp' is larger than the
  53 * user buffer it is silently truncated. If the user provided a larger buffer
  54 * then the trailing portion is zero filled.
  55 *
  56 * These semantics are intended to support future extension of the output
  57 * structures.
  58 */
  59static int uverbs_response(struct uverbs_attr_bundle *attrs, const void *resp,
  60			   size_t resp_len)
  61{
  62	int ret;
  63
  64	if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT))
  65		return uverbs_copy_to_struct_or_zero(
  66			attrs, UVERBS_ATTR_CORE_OUT, resp, resp_len);
  67
  68	if (copy_to_user(attrs->ucore.outbuf, resp,
  69			 min(attrs->ucore.outlen, resp_len)))
  70		return -EFAULT;
  71
  72	if (resp_len < attrs->ucore.outlen) {
  73		/*
  74		 * Zero fill any extra memory that user
  75		 * space might have provided.
  76		 */
  77		ret = clear_user(attrs->ucore.outbuf + resp_len,
  78				 attrs->ucore.outlen - resp_len);
  79		if (ret)
  80			return -EFAULT;
  81	}
  82
  83	return 0;
  84}
  85
  86/*
  87 * Copy a request from userspace. If the provided 'req' is larger than the
  88 * user buffer then the user buffer is zero extended into the 'req'. If 'req'
  89 * is smaller than the user buffer then the uncopied bytes in the user buffer
  90 * must be zero.
  91 */
  92static int uverbs_request(struct uverbs_attr_bundle *attrs, void *req,
  93			  size_t req_len)
  94{
  95	if (copy_from_user(req, attrs->ucore.inbuf,
  96			   min(attrs->ucore.inlen, req_len)))
  97		return -EFAULT;
  98
  99	if (attrs->ucore.inlen < req_len) {
 100		memset(req + attrs->ucore.inlen, 0,
 101		       req_len - attrs->ucore.inlen);
 102	} else if (attrs->ucore.inlen > req_len) {
 103		if (!ib_is_buffer_cleared(attrs->ucore.inbuf + req_len,
 104					  attrs->ucore.inlen - req_len))
 105			return -EOPNOTSUPP;
 106	}
 107	return 0;
 108}
 109
 110/*
 111 * Generate the value for the 'response_length' protocol used by write_ex.
 112 * This is the number of bytes the kernel actually wrote. Userspace can use
 113 * this to detect what structure members in the response the kernel
 114 * understood.
 115 */
 116static u32 uverbs_response_length(struct uverbs_attr_bundle *attrs,
 117				  size_t resp_len)
 118{
 119	return min_t(size_t, attrs->ucore.outlen, resp_len);
 120}
 121
 122/*
 123 * The iterator version of the request interface is for handlers that need to
 124 * step over a flex array at the end of a command header.
 125 */
 126struct uverbs_req_iter {
 127	const void __user *cur;
 128	const void __user *end;
 129};
 130
 131static int uverbs_request_start(struct uverbs_attr_bundle *attrs,
 132				struct uverbs_req_iter *iter,
 133				void *req,
 134				size_t req_len)
 135{
 136	if (attrs->ucore.inlen < req_len)
 137		return -ENOSPC;
 138
 139	if (copy_from_user(req, attrs->ucore.inbuf, req_len))
 140		return -EFAULT;
 141
 142	iter->cur = attrs->ucore.inbuf + req_len;
 143	iter->end = attrs->ucore.inbuf + attrs->ucore.inlen;
 144	return 0;
 145}
 146
 147static int uverbs_request_next(struct uverbs_req_iter *iter, void *val,
 148			       size_t len)
 149{
 150	if (iter->cur + len > iter->end)
 151		return -ENOSPC;
 152
 153	if (copy_from_user(val, iter->cur, len))
 154		return -EFAULT;
 155
 156	iter->cur += len;
 157	return 0;
 158}
 159
 160static const void __user *uverbs_request_next_ptr(struct uverbs_req_iter *iter,
 161						  size_t len)
 162{
 163	const void __user *res = iter->cur;
 164
 165	if (len > iter->end - iter->cur)
 166		return (void __force __user *)ERR_PTR(-ENOSPC);
 167	iter->cur += len;
 168	return res;
 169}
 170
 171static int uverbs_request_finish(struct uverbs_req_iter *iter)
 172{
 173	if (!ib_is_buffer_cleared(iter->cur, iter->end - iter->cur))
 174		return -EOPNOTSUPP;
 175	return 0;
 176}
 177
 178/*
 179 * When calling a destroy function during an error unwind we need to pass in
 180 * the udata that is sanitized of all user arguments. Ie from the driver
 181 * perspective it looks like no udata was passed.
 182 */
 183struct ib_udata *uverbs_get_cleared_udata(struct uverbs_attr_bundle *attrs)
 184{
 185	attrs->driver_udata = (struct ib_udata){};
 186	return &attrs->driver_udata;
 187}
 188
 189static struct ib_uverbs_completion_event_file *
 190_ib_uverbs_lookup_comp_file(s32 fd, struct uverbs_attr_bundle *attrs)
 191{
 192	struct ib_uobject *uobj = ufd_get_read(UVERBS_OBJECT_COMP_CHANNEL,
 193					       fd, attrs);
 194
 195	if (IS_ERR(uobj))
 196		return ERR_CAST(uobj);
 197
 198	uverbs_uobject_get(uobj);
 199	uobj_put_read(uobj);
 200
 201	return container_of(uobj, struct ib_uverbs_completion_event_file,
 202			    uobj);
 203}
 204#define ib_uverbs_lookup_comp_file(_fd, _ufile)                                \
 205	_ib_uverbs_lookup_comp_file((_fd)*typecheck(s32, _fd), _ufile)
 206
 207int ib_alloc_ucontext(struct uverbs_attr_bundle *attrs)
 208{
 209	struct ib_uverbs_file *ufile = attrs->ufile;
 210	struct ib_ucontext *ucontext;
 211	struct ib_device *ib_dev;
 212
 213	ib_dev = srcu_dereference(ufile->device->ib_dev,
 214				  &ufile->device->disassociate_srcu);
 215	if (!ib_dev)
 216		return -EIO;
 217
 218	ucontext = rdma_zalloc_drv_obj(ib_dev, ib_ucontext);
 219	if (!ucontext)
 220		return -ENOMEM;
 221
 222	ucontext->device = ib_dev;
 223	ucontext->ufile = ufile;
 224	xa_init_flags(&ucontext->mmap_xa, XA_FLAGS_ALLOC);
 225
 226	rdma_restrack_new(&ucontext->res, RDMA_RESTRACK_CTX);
 227	rdma_restrack_set_name(&ucontext->res, NULL);
 228	attrs->context = ucontext;
 229	return 0;
 230}
 231
 232int ib_init_ucontext(struct uverbs_attr_bundle *attrs)
 233{
 234	struct ib_ucontext *ucontext = attrs->context;
 235	struct ib_uverbs_file *file = attrs->ufile;
 236	int *fd_array;
 237	int fd_count;
 238	int ret;
 239
 240	if (!down_read_trylock(&file->hw_destroy_rwsem))
 241		return -EIO;
 242	mutex_lock(&file->ucontext_lock);
 243	if (file->ucontext) {
 244		ret = -EINVAL;
 245		goto err;
 246	}
 247
 248	ret = ib_rdmacg_try_charge(&ucontext->cg_obj, ucontext->device,
 249				   RDMACG_RESOURCE_HCA_HANDLE);
 250	if (ret)
 251		goto err;
 252
 253	if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_GET_CONTEXT_FD_ARR)) {
 254		fd_count = uverbs_attr_ptr_get_array_size(attrs,
 255							  UVERBS_ATTR_GET_CONTEXT_FD_ARR,
 256							  sizeof(int));
 257		if (fd_count < 0) {
 258			ret = fd_count;
 259			goto err_uncharge;
 260		}
 261
 262		fd_array = uverbs_attr_get_alloced_ptr(attrs,
 263						       UVERBS_ATTR_GET_CONTEXT_FD_ARR);
 264		ret = ib_get_ucaps(fd_array, fd_count, &ucontext->enabled_caps);
 265		if (ret)
 266			goto err_uncharge;
 267	}
 268
 269	ret = ucontext->device->ops.alloc_ucontext(ucontext,
 270						   &attrs->driver_udata);
 271	if (ret)
 272		goto err_uncharge;
 273
 274	rdma_restrack_add(&ucontext->res);
 275
 276	/*
 277	 * Make sure that ib_uverbs_get_ucontext() sees the pointer update
 278	 * only after all writes to setup the ucontext have completed
 279	 */
 280	smp_store_release(&file->ucontext, ucontext);
 281
 282	mutex_unlock(&file->ucontext_lock);
 283	up_read(&file->hw_destroy_rwsem);
 284	return 0;
 285
 286err_uncharge:
 287	ib_rdmacg_uncharge(&ucontext->cg_obj, ucontext->device,
 288			   RDMACG_RESOURCE_HCA_HANDLE);
 289err:
 290	mutex_unlock(&file->ucontext_lock);
 291	up_read(&file->hw_destroy_rwsem);
 292	return ret;
 293}
 294
 295static int ib_uverbs_get_context(struct uverbs_attr_bundle *attrs)
 296{
 297	struct ib_uverbs_get_context_resp resp;
 298	struct ib_uverbs_get_context cmd;
 299	struct ib_device *ib_dev;
 300	struct ib_uobject *uobj;
 301	int ret;
 302
 303	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 304	if (ret)
 305		return ret;
 306
 307	ret = ib_alloc_ucontext(attrs);
 308	if (ret)
 309		return ret;
 310
 311	uobj = uobj_alloc(UVERBS_OBJECT_ASYNC_EVENT, attrs, &ib_dev);
 312	if (IS_ERR(uobj)) {
 313		ret = PTR_ERR(uobj);
 314		goto err_ucontext;
 315	}
 316
 317	resp = (struct ib_uverbs_get_context_resp){
 318		.num_comp_vectors = attrs->ufile->device->num_comp_vectors,
 319		.async_fd = uobj->id,
 320	};
 321	ret = uverbs_response(attrs, &resp, sizeof(resp));
 322	if (ret)
 323		goto err_uobj;
 324
 325	ret = ib_init_ucontext(attrs);
 326	if (ret)
 327		goto err_uobj;
 328
 329	ib_uverbs_init_async_event_file(
 330		container_of(uobj, struct ib_uverbs_async_event_file, uobj));
 331	rdma_alloc_commit_uobject(uobj, attrs);
 332	return 0;
 333
 334err_uobj:
 335	rdma_alloc_abort_uobject(uobj, attrs, false);
 336err_ucontext:
 337	rdma_restrack_put(&attrs->context->res);
 338	kfree(attrs->context);
 339	attrs->context = NULL;
 340	return ret;
 341}
 342
 343static void copy_query_dev_fields(struct ib_ucontext *ucontext,
 344				  struct ib_uverbs_query_device_resp *resp,
 345				  struct ib_device_attr *attr)
 346{
 347	struct ib_device *ib_dev = ucontext->device;
 348
 349	resp->fw_ver		= attr->fw_ver;
 350	resp->node_guid		= ib_dev->node_guid;
 351	resp->sys_image_guid	= attr->sys_image_guid;
 352	resp->max_mr_size	= attr->max_mr_size;
 353	resp->page_size_cap	= attr->page_size_cap;
 354	resp->vendor_id		= attr->vendor_id;
 355	resp->vendor_part_id	= attr->vendor_part_id;
 356	resp->hw_ver		= attr->hw_ver;
 357	resp->max_qp		= attr->max_qp;
 358	resp->max_qp_wr		= attr->max_qp_wr;
 359	resp->device_cap_flags  = lower_32_bits(attr->device_cap_flags);
 360	resp->max_sge		= min(attr->max_send_sge, attr->max_recv_sge);
 361	resp->max_sge_rd	= attr->max_sge_rd;
 362	resp->max_cq		= attr->max_cq;
 363	resp->max_cqe		= attr->max_cqe;
 364	resp->max_mr		= attr->max_mr;
 365	resp->max_pd		= attr->max_pd;
 366	resp->max_qp_rd_atom	= attr->max_qp_rd_atom;
 367	resp->max_ee_rd_atom	= attr->max_ee_rd_atom;
 368	resp->max_res_rd_atom	= attr->max_res_rd_atom;
 369	resp->max_qp_init_rd_atom	= attr->max_qp_init_rd_atom;
 370	resp->max_ee_init_rd_atom	= attr->max_ee_init_rd_atom;
 371	resp->atomic_cap		= attr->atomic_cap;
 372	resp->max_ee			= attr->max_ee;
 373	resp->max_rdd			= attr->max_rdd;
 374	resp->max_mw			= attr->max_mw;
 375	resp->max_raw_ipv6_qp		= attr->max_raw_ipv6_qp;
 376	resp->max_raw_ethy_qp		= attr->max_raw_ethy_qp;
 377	resp->max_mcast_grp		= attr->max_mcast_grp;
 378	resp->max_mcast_qp_attach	= attr->max_mcast_qp_attach;
 379	resp->max_total_mcast_qp_attach	= attr->max_total_mcast_qp_attach;
 380	resp->max_ah			= attr->max_ah;
 381	resp->max_srq			= attr->max_srq;
 382	resp->max_srq_wr		= attr->max_srq_wr;
 383	resp->max_srq_sge		= attr->max_srq_sge;
 384	resp->max_pkeys			= attr->max_pkeys;
 385	resp->local_ca_ack_delay	= attr->local_ca_ack_delay;
 386	resp->phys_port_cnt = min_t(u32, ib_dev->phys_port_cnt, U8_MAX);
 387}
 388
 389static int ib_uverbs_query_device(struct uverbs_attr_bundle *attrs)
 390{
 391	struct ib_uverbs_query_device      cmd;
 392	struct ib_uverbs_query_device_resp resp;
 393	struct ib_ucontext *ucontext;
 394	int ret;
 395
 396	ucontext = ib_uverbs_get_ucontext(attrs);
 397	if (IS_ERR(ucontext))
 398		return PTR_ERR(ucontext);
 399
 400	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 401	if (ret)
 402		return ret;
 403
 404	memset(&resp, 0, sizeof resp);
 405	copy_query_dev_fields(ucontext, &resp, &ucontext->device->attrs);
 406
 407	return uverbs_response(attrs, &resp, sizeof(resp));
 408}
 409
 410static int ib_uverbs_query_port(struct uverbs_attr_bundle *attrs)
 411{
 412	struct ib_uverbs_query_port      cmd;
 413	struct ib_uverbs_query_port_resp resp;
 414	struct ib_port_attr              attr;
 415	int                              ret;
 416	struct ib_ucontext *ucontext;
 417	struct ib_device *ib_dev;
 418
 419	ucontext = ib_uverbs_get_ucontext(attrs);
 420	if (IS_ERR(ucontext))
 421		return PTR_ERR(ucontext);
 422	ib_dev = ucontext->device;
 423
 424	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 425	if (ret)
 426		return ret;
 427
 428	ret = ib_query_port(ib_dev, cmd.port_num, &attr);
 429	if (ret)
 430		return ret;
 431
 432	memset(&resp, 0, sizeof resp);
 433	copy_port_attr_to_resp(&attr, &resp, ib_dev, cmd.port_num);
 434
 435	return uverbs_response(attrs, &resp, sizeof(resp));
 436}
 437
 438static int ib_uverbs_alloc_pd(struct uverbs_attr_bundle *attrs)
 439{
 440	struct ib_uverbs_alloc_pd_resp resp = {};
 441	struct ib_uverbs_alloc_pd      cmd;
 442	struct ib_uobject             *uobj;
 443	struct ib_pd                  *pd;
 444	int                            ret;
 445	struct ib_device *ib_dev;
 446
 447	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 448	if (ret)
 449		return ret;
 450
 451	uobj = uobj_alloc(UVERBS_OBJECT_PD, attrs, &ib_dev);
 452	if (IS_ERR(uobj))
 453		return PTR_ERR(uobj);
 454
 455	pd = rdma_zalloc_drv_obj(ib_dev, ib_pd);
 456	if (!pd) {
 457		ret = -ENOMEM;
 458		goto err;
 459	}
 460
 461	pd->device  = ib_dev;
 462	pd->uobject = uobj;
 463	atomic_set(&pd->usecnt, 0);
 464
 465	rdma_restrack_new(&pd->res, RDMA_RESTRACK_PD);
 466	rdma_restrack_set_name(&pd->res, NULL);
 467
 468	ret = ib_dev->ops.alloc_pd(pd, &attrs->driver_udata);
 469	if (ret)
 470		goto err_alloc;
 471	rdma_restrack_add(&pd->res);
 472
 473	uobj->object = pd;
 474	uobj_finalize_uobj_create(uobj, attrs);
 475
 476	resp.pd_handle = uobj->id;
 477	return uverbs_response(attrs, &resp, sizeof(resp));
 478
 479err_alloc:
 480	rdma_restrack_put(&pd->res);
 481	kfree(pd);
 482err:
 483	uobj_alloc_abort(uobj, attrs);
 484	return ret;
 485}
 486
 487static int ib_uverbs_dealloc_pd(struct uverbs_attr_bundle *attrs)
 488{
 489	struct ib_uverbs_dealloc_pd cmd;
 490	int ret;
 491
 492	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 493	if (ret)
 494		return ret;
 495
 496	return uobj_perform_destroy(UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
 497}
 498
 499struct xrcd_table_entry {
 500	struct rb_node  node;
 501	struct ib_xrcd *xrcd;
 502	struct inode   *inode;
 503};
 504
 505static int xrcd_table_insert(struct ib_uverbs_device *dev,
 506			    struct inode *inode,
 507			    struct ib_xrcd *xrcd)
 508{
 509	struct xrcd_table_entry *entry, *scan;
 510	struct rb_node **p = &dev->xrcd_tree.rb_node;
 511	struct rb_node *parent = NULL;
 512
 513	entry = kmalloc(sizeof *entry, GFP_KERNEL);
 514	if (!entry)
 515		return -ENOMEM;
 516
 517	entry->xrcd  = xrcd;
 518	entry->inode = inode;
 519
 520	while (*p) {
 521		parent = *p;
 522		scan = rb_entry(parent, struct xrcd_table_entry, node);
 523
 524		if (inode < scan->inode) {
 525			p = &(*p)->rb_left;
 526		} else if (inode > scan->inode) {
 527			p = &(*p)->rb_right;
 528		} else {
 529			kfree(entry);
 530			return -EEXIST;
 531		}
 532	}
 533
 534	rb_link_node(&entry->node, parent, p);
 535	rb_insert_color(&entry->node, &dev->xrcd_tree);
 536	igrab(inode);
 537	return 0;
 538}
 539
 540static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev,
 541						  struct inode *inode)
 542{
 543	struct xrcd_table_entry *entry;
 544	struct rb_node *p = dev->xrcd_tree.rb_node;
 545
 546	while (p) {
 547		entry = rb_entry(p, struct xrcd_table_entry, node);
 548
 549		if (inode < entry->inode)
 550			p = p->rb_left;
 551		else if (inode > entry->inode)
 552			p = p->rb_right;
 553		else
 554			return entry;
 555	}
 556
 557	return NULL;
 558}
 559
 560static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode)
 561{
 562	struct xrcd_table_entry *entry;
 563
 564	entry = xrcd_table_search(dev, inode);
 565	if (!entry)
 566		return NULL;
 567
 568	return entry->xrcd;
 569}
 570
 571static void xrcd_table_delete(struct ib_uverbs_device *dev,
 572			      struct inode *inode)
 573{
 574	struct xrcd_table_entry *entry;
 575
 576	entry = xrcd_table_search(dev, inode);
 577	if (entry) {
 578		iput(inode);
 579		rb_erase(&entry->node, &dev->xrcd_tree);
 580		kfree(entry);
 581	}
 582}
 583
 584static int ib_uverbs_open_xrcd(struct uverbs_attr_bundle *attrs)
 585{
 586	struct ib_uverbs_device *ibudev = attrs->ufile->device;
 587	struct ib_uverbs_open_xrcd_resp	resp = {};
 588	struct ib_uverbs_open_xrcd	cmd;
 589	struct ib_uxrcd_object         *obj;
 590	struct ib_xrcd                 *xrcd = NULL;
 591	struct inode                   *inode = NULL;
 592	int				new_xrcd = 0;
 593	struct ib_device *ib_dev;
 594	struct fd f = EMPTY_FD;
 595	int ret;
 596
 597	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 598	if (ret)
 599		return ret;
 600
 601	mutex_lock(&ibudev->xrcd_tree_mutex);
 602
 603	if (cmd.fd != -1) {
 604		/* search for file descriptor */
 605		f = fdget(cmd.fd);
 606		if (fd_empty(f)) {
 607			ret = -EBADF;
 608			goto err_tree_mutex_unlock;
 609		}
 610
 611		inode = file_inode(fd_file(f));
 612		xrcd = find_xrcd(ibudev, inode);
 613		if (!xrcd && !(cmd.oflags & O_CREAT)) {
 614			/* no file descriptor. Need CREATE flag */
 615			ret = -EAGAIN;
 616			goto err_tree_mutex_unlock;
 617		}
 618
 619		if (xrcd && cmd.oflags & O_EXCL) {
 620			ret = -EINVAL;
 621			goto err_tree_mutex_unlock;
 622		}
 623	}
 624
 625	obj = (struct ib_uxrcd_object *)uobj_alloc(UVERBS_OBJECT_XRCD, attrs,
 626						   &ib_dev);
 627	if (IS_ERR(obj)) {
 628		ret = PTR_ERR(obj);
 629		goto err_tree_mutex_unlock;
 630	}
 631
 632	if (!xrcd) {
 633		xrcd = ib_alloc_xrcd_user(ib_dev, inode, &attrs->driver_udata);
 634		if (IS_ERR(xrcd)) {
 635			ret = PTR_ERR(xrcd);
 636			goto err;
 637		}
 638		new_xrcd = 1;
 639	}
 640
 641	atomic_set(&obj->refcnt, 0);
 642	obj->uobject.object = xrcd;
 643
 644	if (inode) {
 645		if (new_xrcd) {
 646			/* create new inode/xrcd table entry */
 647			ret = xrcd_table_insert(ibudev, inode, xrcd);
 648			if (ret)
 649				goto err_dealloc_xrcd;
 650		}
 651		atomic_inc(&xrcd->usecnt);
 652	}
 653
 654	fdput(f);
 655
 656	mutex_unlock(&ibudev->xrcd_tree_mutex);
 657	uobj_finalize_uobj_create(&obj->uobject, attrs);
 658
 659	resp.xrcd_handle = obj->uobject.id;
 660	return uverbs_response(attrs, &resp, sizeof(resp));
 661
 662err_dealloc_xrcd:
 663	ib_dealloc_xrcd_user(xrcd, uverbs_get_cleared_udata(attrs));
 664
 665err:
 666	uobj_alloc_abort(&obj->uobject, attrs);
 667
 668err_tree_mutex_unlock:
 669	fdput(f);
 670
 671	mutex_unlock(&ibudev->xrcd_tree_mutex);
 672
 673	return ret;
 674}
 675
 676static int ib_uverbs_close_xrcd(struct uverbs_attr_bundle *attrs)
 677{
 678	struct ib_uverbs_close_xrcd cmd;
 679	int ret;
 680
 681	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 682	if (ret)
 683		return ret;
 684
 685	return uobj_perform_destroy(UVERBS_OBJECT_XRCD, cmd.xrcd_handle, attrs);
 686}
 687
 688int ib_uverbs_dealloc_xrcd(struct ib_uobject *uobject, struct ib_xrcd *xrcd,
 689			   enum rdma_remove_reason why,
 690			   struct uverbs_attr_bundle *attrs)
 691{
 692	struct inode *inode;
 693	int ret;
 694	struct ib_uverbs_device *dev = attrs->ufile->device;
 695
 696	inode = xrcd->inode;
 697	if (inode && !atomic_dec_and_test(&xrcd->usecnt))
 698		return 0;
 699
 700	ret = ib_dealloc_xrcd_user(xrcd, &attrs->driver_udata);
 701	if (ret) {
 702		atomic_inc(&xrcd->usecnt);
 703		return ret;
 704	}
 705
 706	if (inode)
 707		xrcd_table_delete(dev, inode);
 708
 709	return 0;
 710}
 711
 712static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs)
 713{
 714	struct ib_uverbs_reg_mr_resp resp = {};
 715	struct ib_uverbs_reg_mr      cmd;
 716	struct ib_uobject           *uobj;
 717	struct ib_pd                *pd;
 718	struct ib_mr                *mr;
 719	int                          ret;
 720	struct ib_device *ib_dev;
 721
 722	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 723	if (ret)
 724		return ret;
 725
 726	if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
 727		return -EINVAL;
 728
 729	uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev);
 730	if (IS_ERR(uobj))
 731		return PTR_ERR(uobj);
 732
 733	ret = ib_check_mr_access(ib_dev, cmd.access_flags);
 734	if (ret)
 735		goto err_free;
 736
 737	pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
 738	if (IS_ERR(pd)) {
 739		ret = PTR_ERR(pd);
 740		goto err_free;
 741	}
 742
 743	mr = pd->device->ops.reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va,
 744					 cmd.access_flags, NULL,
 745					 &attrs->driver_udata);
 746	if (IS_ERR(mr)) {
 747		ret = PTR_ERR(mr);
 748		goto err_put;
 749	}
 750
 751	mr->device  = pd->device;
 752	mr->pd      = pd;
 753	mr->type    = IB_MR_TYPE_USER;
 754	mr->dm	    = NULL;
 755	mr->sig_attrs = NULL;
 756	mr->uobject = uobj;
 757	atomic_inc(&pd->usecnt);
 758	mr->iova = cmd.hca_va;
 759	mr->length = cmd.length;
 760
 761	rdma_restrack_new(&mr->res, RDMA_RESTRACK_MR);
 762	rdma_restrack_set_name(&mr->res, NULL);
 763	rdma_restrack_add(&mr->res);
 764
 765	uobj->object = mr;
 766	uobj_put_obj_read(pd);
 767	uobj_finalize_uobj_create(uobj, attrs);
 768
 769	resp.lkey = mr->lkey;
 770	resp.rkey = mr->rkey;
 771	resp.mr_handle = uobj->id;
 772	return uverbs_response(attrs, &resp, sizeof(resp));
 773
 774err_put:
 775	uobj_put_obj_read(pd);
 776err_free:
 777	uobj_alloc_abort(uobj, attrs);
 778	return ret;
 779}
 780
 781static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs)
 782{
 783	struct ib_uverbs_rereg_mr      cmd;
 784	struct ib_uverbs_rereg_mr_resp resp;
 785	struct ib_mr                *mr;
 786	int                          ret;
 787	struct ib_uobject	    *uobj;
 788	struct ib_uobject *new_uobj;
 789	struct ib_device *ib_dev;
 790	struct ib_pd *orig_pd;
 791	struct ib_pd *new_pd;
 792	struct ib_mr *new_mr;
 793
 794	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 795	if (ret)
 796		return ret;
 797
 798	if (!cmd.flags)
 799		return -EINVAL;
 800
 801	if (cmd.flags & ~IB_MR_REREG_SUPPORTED)
 802		return -EOPNOTSUPP;
 803
 804	if ((cmd.flags & IB_MR_REREG_TRANS) &&
 805	    (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
 806		return -EINVAL;
 807
 808	uobj = uobj_get_write(UVERBS_OBJECT_MR, cmd.mr_handle, attrs);
 809	if (IS_ERR(uobj))
 810		return PTR_ERR(uobj);
 811
 812	mr = uobj->object;
 813
 814	if (mr->dm) {
 815		ret = -EINVAL;
 816		goto put_uobjs;
 817	}
 818
 819	if (cmd.flags & IB_MR_REREG_ACCESS) {
 820		ret = ib_check_mr_access(mr->device, cmd.access_flags);
 821		if (ret)
 822			goto put_uobjs;
 823	}
 824
 825	orig_pd = mr->pd;
 826	if (cmd.flags & IB_MR_REREG_PD) {
 827		new_pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle,
 828					   attrs);
 829		if (IS_ERR(new_pd)) {
 830			ret = PTR_ERR(new_pd);
 831			goto put_uobjs;
 832		}
 833	} else {
 834		new_pd = mr->pd;
 835	}
 836
 837	/*
 838	 * The driver might create a new HW object as part of the rereg, we need
 839	 * to have a uobject ready to hold it.
 840	 */
 841	new_uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev);
 842	if (IS_ERR(new_uobj)) {
 843		ret = PTR_ERR(new_uobj);
 844		goto put_uobj_pd;
 845	}
 846
 847	new_mr = ib_dev->ops.rereg_user_mr(mr, cmd.flags, cmd.start, cmd.length,
 848					   cmd.hca_va, cmd.access_flags, new_pd,
 849					   &attrs->driver_udata);
 850	if (IS_ERR(new_mr)) {
 851		ret = PTR_ERR(new_mr);
 852		goto put_new_uobj;
 853	}
 854	if (new_mr) {
 855		new_mr->device = new_pd->device;
 856		new_mr->pd = new_pd;
 857		new_mr->type = IB_MR_TYPE_USER;
 858		new_mr->uobject = uobj;
 859		atomic_inc(&new_pd->usecnt);
 860		new_uobj->object = new_mr;
 861
 862		rdma_restrack_new(&new_mr->res, RDMA_RESTRACK_MR);
 863		rdma_restrack_set_name(&new_mr->res, NULL);
 864		rdma_restrack_add(&new_mr->res);
 865
 866		/*
 867		 * The new uobj for the new HW object is put into the same spot
 868		 * in the IDR and the old uobj & HW object is deleted.
 869		 */
 870		rdma_assign_uobject(uobj, new_uobj, attrs);
 871		rdma_alloc_commit_uobject(new_uobj, attrs);
 872		uobj_put_destroy(uobj);
 873		new_uobj = NULL;
 874		uobj = NULL;
 875		mr = new_mr;
 876	} else {
 877		if (cmd.flags & IB_MR_REREG_PD) {
 878			atomic_dec(&orig_pd->usecnt);
 879			mr->pd = new_pd;
 880			atomic_inc(&new_pd->usecnt);
 881		}
 882		if (cmd.flags & IB_MR_REREG_TRANS) {
 883			mr->iova = cmd.hca_va;
 884			mr->length = cmd.length;
 885		}
 886	}
 887
 888	memset(&resp, 0, sizeof(resp));
 889	resp.lkey      = mr->lkey;
 890	resp.rkey      = mr->rkey;
 891
 892	ret = uverbs_response(attrs, &resp, sizeof(resp));
 893
 894put_new_uobj:
 895	if (new_uobj)
 896		uobj_alloc_abort(new_uobj, attrs);
 897put_uobj_pd:
 898	if (cmd.flags & IB_MR_REREG_PD)
 899		uobj_put_obj_read(new_pd);
 900
 901put_uobjs:
 902	if (uobj)
 903		uobj_put_write(uobj);
 904
 905	return ret;
 906}
 907
 908static int ib_uverbs_dereg_mr(struct uverbs_attr_bundle *attrs)
 909{
 910	struct ib_uverbs_dereg_mr cmd;
 911	int ret;
 912
 913	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 914	if (ret)
 915		return ret;
 916
 917	return uobj_perform_destroy(UVERBS_OBJECT_MR, cmd.mr_handle, attrs);
 918}
 919
 920static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs)
 921{
 922	struct ib_uverbs_alloc_mw      cmd;
 923	struct ib_uverbs_alloc_mw_resp resp = {};
 924	struct ib_uobject             *uobj;
 925	struct ib_pd                  *pd;
 926	struct ib_mw                  *mw;
 927	int                            ret;
 928	struct ib_device *ib_dev;
 929
 930	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 931	if (ret)
 932		return ret;
 933
 934	uobj = uobj_alloc(UVERBS_OBJECT_MW, attrs, &ib_dev);
 935	if (IS_ERR(uobj))
 936		return PTR_ERR(uobj);
 937
 938	pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
 939	if (IS_ERR(pd)) {
 940		ret = PTR_ERR(pd);
 941		goto err_free;
 942	}
 943
 944	if (cmd.mw_type != IB_MW_TYPE_1 && cmd.mw_type != IB_MW_TYPE_2) {
 945		ret = -EINVAL;
 946		goto err_put;
 947	}
 948
 949	mw = rdma_zalloc_drv_obj(ib_dev, ib_mw);
 950	if (!mw) {
 951		ret = -ENOMEM;
 952		goto err_put;
 953	}
 954
 955	mw->device = ib_dev;
 956	mw->pd = pd;
 957	mw->uobject = uobj;
 958	mw->type = cmd.mw_type;
 959
 960	ret = pd->device->ops.alloc_mw(mw, &attrs->driver_udata);
 961	if (ret)
 962		goto err_alloc;
 963
 964	atomic_inc(&pd->usecnt);
 965
 966	uobj->object = mw;
 967	uobj_put_obj_read(pd);
 968	uobj_finalize_uobj_create(uobj, attrs);
 969
 970	resp.rkey = mw->rkey;
 971	resp.mw_handle = uobj->id;
 972	return uverbs_response(attrs, &resp, sizeof(resp));
 973
 974err_alloc:
 975	kfree(mw);
 976err_put:
 977	uobj_put_obj_read(pd);
 978err_free:
 979	uobj_alloc_abort(uobj, attrs);
 980	return ret;
 981}
 982
 983static int ib_uverbs_dealloc_mw(struct uverbs_attr_bundle *attrs)
 984{
 985	struct ib_uverbs_dealloc_mw cmd;
 986	int ret;
 987
 988	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 989	if (ret)
 990		return ret;
 991
 992	return uobj_perform_destroy(UVERBS_OBJECT_MW, cmd.mw_handle, attrs);
 993}
 994
 995static int ib_uverbs_create_comp_channel(struct uverbs_attr_bundle *attrs)
 996{
 997	struct ib_uverbs_create_comp_channel	   cmd;
 998	struct ib_uverbs_create_comp_channel_resp  resp;
 999	struct ib_uobject			  *uobj;
1000	struct ib_uverbs_completion_event_file	  *ev_file;
1001	struct ib_device *ib_dev;
1002	int ret;
1003
1004	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1005	if (ret)
1006		return ret;
1007
1008	uobj = uobj_alloc(UVERBS_OBJECT_COMP_CHANNEL, attrs, &ib_dev);
1009	if (IS_ERR(uobj))
1010		return PTR_ERR(uobj);
1011
1012	ev_file = container_of(uobj, struct ib_uverbs_completion_event_file,
1013			       uobj);
1014	ib_uverbs_init_event_queue(&ev_file->ev_queue);
1015	uobj_finalize_uobj_create(uobj, attrs);
1016
1017	resp.fd = uobj->id;
1018	return uverbs_response(attrs, &resp, sizeof(resp));
1019}
1020
1021static int create_cq(struct uverbs_attr_bundle *attrs,
1022		     struct ib_uverbs_ex_create_cq *cmd)
1023{
1024	struct ib_ucq_object           *obj;
1025	struct ib_uverbs_completion_event_file    *ev_file = NULL;
1026	struct ib_cq                   *cq;
1027	int                             ret;
1028	struct ib_uverbs_ex_create_cq_resp resp = {};
1029	struct ib_cq_init_attr attr = {};
1030	struct ib_device *ib_dev;
1031
1032	if (cmd->comp_vector >= attrs->ufile->device->num_comp_vectors)
1033		return -EINVAL;
1034
1035	obj = (struct ib_ucq_object *)uobj_alloc(UVERBS_OBJECT_CQ, attrs,
1036						 &ib_dev);
1037	if (IS_ERR(obj))
1038		return PTR_ERR(obj);
1039
1040	if (cmd->comp_channel >= 0) {
1041		ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel, attrs);
1042		if (IS_ERR(ev_file)) {
1043			ret = PTR_ERR(ev_file);
1044			goto err;
1045		}
1046	}
1047
1048	obj->uevent.uobject.user_handle = cmd->user_handle;
1049	INIT_LIST_HEAD(&obj->comp_list);
1050	INIT_LIST_HEAD(&obj->uevent.event_list);
1051
1052	attr.cqe = cmd->cqe;
1053	attr.comp_vector = cmd->comp_vector;
1054	attr.flags = cmd->flags;
1055
1056	cq = rdma_zalloc_drv_obj(ib_dev, ib_cq);
1057	if (!cq) {
1058		ret = -ENOMEM;
1059		goto err_file;
1060	}
1061	cq->device        = ib_dev;
1062	cq->uobject       = obj;
1063	cq->comp_handler  = ib_uverbs_comp_handler;
1064	cq->event_handler = ib_uverbs_cq_event_handler;
1065	cq->cq_context    = ev_file ? &ev_file->ev_queue : NULL;
1066	atomic_set(&cq->usecnt, 0);
1067
1068	rdma_restrack_new(&cq->res, RDMA_RESTRACK_CQ);
1069	rdma_restrack_set_name(&cq->res, NULL);
1070
1071	ret = ib_dev->ops.create_cq(cq, &attr, attrs);
1072	if (ret)
1073		goto err_free;
1074	rdma_restrack_add(&cq->res);
1075
1076	obj->uevent.uobject.object = cq;
1077	obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
1078	if (obj->uevent.event_file)
1079		uverbs_uobject_get(&obj->uevent.event_file->uobj);
1080	uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
1081
1082	resp.base.cq_handle = obj->uevent.uobject.id;
1083	resp.base.cqe = cq->cqe;
1084	resp.response_length = uverbs_response_length(attrs, sizeof(resp));
1085	return uverbs_response(attrs, &resp, sizeof(resp));
1086
1087err_free:
1088	rdma_restrack_put(&cq->res);
1089	kfree(cq);
1090err_file:
1091	if (ev_file)
1092		ib_uverbs_release_ucq(ev_file, obj);
1093err:
1094	uobj_alloc_abort(&obj->uevent.uobject, attrs);
1095	return ret;
1096}
1097
1098static int ib_uverbs_create_cq(struct uverbs_attr_bundle *attrs)
1099{
1100	struct ib_uverbs_create_cq      cmd;
1101	struct ib_uverbs_ex_create_cq	cmd_ex;
1102	int ret;
1103
1104	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1105	if (ret)
1106		return ret;
1107
1108	memset(&cmd_ex, 0, sizeof(cmd_ex));
1109	cmd_ex.user_handle = cmd.user_handle;
1110	cmd_ex.cqe = cmd.cqe;
1111	cmd_ex.comp_vector = cmd.comp_vector;
1112	cmd_ex.comp_channel = cmd.comp_channel;
1113
1114	return create_cq(attrs, &cmd_ex);
1115}
1116
1117static int ib_uverbs_ex_create_cq(struct uverbs_attr_bundle *attrs)
1118{
1119	struct ib_uverbs_ex_create_cq  cmd;
1120	int ret;
1121
1122	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1123	if (ret)
1124		return ret;
1125
1126	if (cmd.comp_mask)
1127		return -EINVAL;
1128
1129	if (cmd.reserved)
1130		return -EINVAL;
1131
1132	return create_cq(attrs, &cmd);
1133}
1134
1135static int ib_uverbs_resize_cq(struct uverbs_attr_bundle *attrs)
1136{
1137	struct ib_uverbs_resize_cq	cmd;
1138	struct ib_uverbs_resize_cq_resp	resp = {};
1139	struct ib_cq			*cq;
1140	int ret;
1141
1142	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1143	if (ret)
1144		return ret;
1145
1146	cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1147	if (IS_ERR(cq))
1148		return PTR_ERR(cq);
1149
1150	ret = cq->device->ops.resize_cq(cq, cmd.cqe, &attrs->driver_udata);
1151	if (ret)
1152		goto out;
1153
1154	resp.cqe = cq->cqe;
1155
1156	ret = uverbs_response(attrs, &resp, sizeof(resp));
1157out:
1158	rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
1159				UVERBS_LOOKUP_READ);
1160
1161	return ret;
1162}
1163
1164static int copy_wc_to_user(struct ib_device *ib_dev, void __user *dest,
1165			   struct ib_wc *wc)
1166{
1167	struct ib_uverbs_wc tmp;
1168
1169	tmp.wr_id		= wc->wr_id;
1170	tmp.status		= wc->status;
1171	tmp.opcode		= wc->opcode;
1172	tmp.vendor_err		= wc->vendor_err;
1173	tmp.byte_len		= wc->byte_len;
1174	tmp.ex.imm_data		= wc->ex.imm_data;
1175	tmp.qp_num		= wc->qp->qp_num;
1176	tmp.src_qp		= wc->src_qp;
1177	tmp.wc_flags		= wc->wc_flags;
1178	tmp.pkey_index		= wc->pkey_index;
1179	if (rdma_cap_opa_ah(ib_dev, wc->port_num))
1180		tmp.slid	= OPA_TO_IB_UCAST_LID(wc->slid);
1181	else
1182		tmp.slid	= ib_lid_cpu16(wc->slid);
1183	tmp.sl			= wc->sl;
1184	tmp.dlid_path_bits	= wc->dlid_path_bits;
1185	tmp.port_num		= wc->port_num;
1186	tmp.reserved		= 0;
1187
1188	if (copy_to_user(dest, &tmp, sizeof tmp))
1189		return -EFAULT;
1190
1191	return 0;
1192}
1193
1194static int ib_uverbs_poll_cq(struct uverbs_attr_bundle *attrs)
1195{
1196	struct ib_uverbs_poll_cq       cmd;
1197	struct ib_uverbs_poll_cq_resp  resp;
1198	u8 __user                     *header_ptr;
1199	u8 __user                     *data_ptr;
1200	struct ib_cq                  *cq;
1201	struct ib_wc                   wc;
1202	int                            ret;
1203
1204	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1205	if (ret)
1206		return ret;
1207
1208	cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1209	if (IS_ERR(cq))
1210		return PTR_ERR(cq);
1211
1212	/* we copy a struct ib_uverbs_poll_cq_resp to user space */
1213	header_ptr = attrs->ucore.outbuf;
1214	data_ptr = header_ptr + sizeof resp;
1215
1216	memset(&resp, 0, sizeof resp);
1217	while (resp.count < cmd.ne) {
1218		ret = ib_poll_cq(cq, 1, &wc);
1219		if (ret < 0)
1220			goto out_put;
1221		if (!ret)
1222			break;
1223
1224		ret = copy_wc_to_user(cq->device, data_ptr, &wc);
1225		if (ret)
1226			goto out_put;
1227
1228		data_ptr += sizeof(struct ib_uverbs_wc);
1229		++resp.count;
1230	}
1231
1232	if (copy_to_user(header_ptr, &resp, sizeof resp)) {
1233		ret = -EFAULT;
1234		goto out_put;
1235	}
1236	ret = 0;
1237
1238	if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT))
1239		ret = uverbs_output_written(attrs, UVERBS_ATTR_CORE_OUT);
1240
1241out_put:
1242	rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
1243				UVERBS_LOOKUP_READ);
1244	return ret;
1245}
1246
1247static int ib_uverbs_req_notify_cq(struct uverbs_attr_bundle *attrs)
1248{
1249	struct ib_uverbs_req_notify_cq cmd;
1250	struct ib_cq                  *cq;
1251	int ret;
1252
1253	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1254	if (ret)
1255		return ret;
1256
1257	cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1258	if (IS_ERR(cq))
1259		return PTR_ERR(cq);
1260
1261	ib_req_notify_cq(cq, cmd.solicited_only ?
1262			 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
1263
1264	rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
1265				UVERBS_LOOKUP_READ);
1266	return 0;
1267}
1268
1269static int ib_uverbs_destroy_cq(struct uverbs_attr_bundle *attrs)
1270{
1271	struct ib_uverbs_destroy_cq      cmd;
1272	struct ib_uverbs_destroy_cq_resp resp;
1273	struct ib_uobject		*uobj;
1274	struct ib_ucq_object        	*obj;
1275	int ret;
1276
1277	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1278	if (ret)
1279		return ret;
1280
1281	uobj = uobj_get_destroy(UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1282	if (IS_ERR(uobj))
1283		return PTR_ERR(uobj);
1284
1285	obj = container_of(uobj, struct ib_ucq_object, uevent.uobject);
1286	memset(&resp, 0, sizeof(resp));
1287	resp.comp_events_reported  = obj->comp_events_reported;
1288	resp.async_events_reported = obj->uevent.events_reported;
1289
1290	uobj_put_destroy(uobj);
1291
1292	return uverbs_response(attrs, &resp, sizeof(resp));
1293}
1294
1295static int create_qp(struct uverbs_attr_bundle *attrs,
1296		     struct ib_uverbs_ex_create_qp *cmd)
1297{
1298	struct ib_uqp_object		*obj;
1299	struct ib_device		*device;
1300	struct ib_pd			*pd = NULL;
1301	struct ib_xrcd			*xrcd = NULL;
1302	struct ib_uobject		*xrcd_uobj = ERR_PTR(-ENOENT);
1303	struct ib_cq			*scq = NULL, *rcq = NULL;
1304	struct ib_srq			*srq = NULL;
1305	struct ib_qp			*qp;
1306	struct ib_qp_init_attr		attr = {};
1307	struct ib_uverbs_ex_create_qp_resp resp = {};
1308	int				ret;
1309	struct ib_rwq_ind_table *ind_tbl = NULL;
1310	bool has_sq = true;
1311	struct ib_device *ib_dev;
1312
1313	switch (cmd->qp_type) {
1314	case IB_QPT_RAW_PACKET:
1315		if (!rdma_uattrs_has_raw_cap(attrs))
1316			return -EPERM;
1317		fallthrough;
1318	case IB_QPT_RC:
1319	case IB_QPT_UC:
1320	case IB_QPT_UD:
1321	case IB_QPT_XRC_INI:
1322	case IB_QPT_XRC_TGT:
1323	case IB_QPT_DRIVER:
1324		break;
1325	default:
1326		return -EINVAL;
1327	}
1328
1329	obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs,
1330						 &ib_dev);
1331	if (IS_ERR(obj))
1332		return PTR_ERR(obj);
1333	obj->uxrcd = NULL;
1334	obj->uevent.uobject.user_handle = cmd->user_handle;
1335	mutex_init(&obj->mcast_lock);
1336
1337	if (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE) {
1338		ind_tbl = uobj_get_obj_read(rwq_ind_table,
1339					    UVERBS_OBJECT_RWQ_IND_TBL,
1340					    cmd->rwq_ind_tbl_handle, attrs);
1341		if (IS_ERR(ind_tbl)) {
1342			ret = PTR_ERR(ind_tbl);
1343			goto err_put;
1344		}
1345
1346		attr.rwq_ind_tbl = ind_tbl;
1347	}
1348
1349	if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) {
1350		ret = -EINVAL;
1351		goto err_put;
1352	}
1353
1354	if (ind_tbl && !cmd->max_send_wr)
1355		has_sq = false;
1356
1357	if (cmd->qp_type == IB_QPT_XRC_TGT) {
1358		xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->pd_handle,
1359					  attrs);
1360
1361		if (IS_ERR(xrcd_uobj)) {
1362			ret = -EINVAL;
1363			goto err_put;
1364		}
1365
1366		xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1367		if (!xrcd) {
1368			ret = -EINVAL;
1369			goto err_put;
1370		}
1371		device = xrcd->device;
1372	} else {
1373		if (cmd->qp_type == IB_QPT_XRC_INI) {
1374			cmd->max_recv_wr = 0;
1375			cmd->max_recv_sge = 0;
1376		} else {
1377			if (cmd->is_srq) {
1378				srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ,
1379							cmd->srq_handle, attrs);
1380				if (IS_ERR(srq) ||
1381				    srq->srq_type == IB_SRQT_XRC) {
1382					ret = IS_ERR(srq) ? PTR_ERR(srq) :
1383								  -EINVAL;
1384					goto err_put;
1385				}
1386			}
1387
1388			if (!ind_tbl) {
1389				if (cmd->recv_cq_handle != cmd->send_cq_handle) {
1390					rcq = uobj_get_obj_read(
1391						cq, UVERBS_OBJECT_CQ,
1392						cmd->recv_cq_handle, attrs);
1393					if (IS_ERR(rcq)) {
1394						ret = PTR_ERR(rcq);
1395						goto err_put;
1396					}
1397				}
1398			}
1399		}
1400
1401		if (has_sq) {
1402			scq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ,
1403						cmd->send_cq_handle, attrs);
1404			if (IS_ERR(scq)) {
1405				ret = PTR_ERR(scq);
1406				goto err_put;
1407			}
1408		}
1409
1410		if (!ind_tbl && cmd->qp_type != IB_QPT_XRC_INI)
1411			rcq = rcq ?: scq;
1412		pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle,
1413				       attrs);
1414		if (IS_ERR(pd)) {
1415			ret = PTR_ERR(pd);
1416			goto err_put;
1417		}
1418
1419		device = pd->device;
1420	}
1421
1422	attr.event_handler = ib_uverbs_qp_event_handler;
1423	attr.send_cq       = scq;
1424	attr.recv_cq       = rcq;
1425	attr.srq           = srq;
1426	attr.xrcd	   = xrcd;
1427	attr.sq_sig_type   = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR :
1428					      IB_SIGNAL_REQ_WR;
1429	attr.qp_type       = cmd->qp_type;
1430
1431	attr.cap.max_send_wr     = cmd->max_send_wr;
1432	attr.cap.max_recv_wr     = cmd->max_recv_wr;
1433	attr.cap.max_send_sge    = cmd->max_send_sge;
1434	attr.cap.max_recv_sge    = cmd->max_recv_sge;
1435	attr.cap.max_inline_data = cmd->max_inline_data;
1436
1437	INIT_LIST_HEAD(&obj->uevent.event_list);
1438	INIT_LIST_HEAD(&obj->mcast_list);
1439
1440	attr.create_flags = cmd->create_flags;
1441	if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
1442				IB_QP_CREATE_CROSS_CHANNEL |
1443				IB_QP_CREATE_MANAGED_SEND |
1444				IB_QP_CREATE_MANAGED_RECV |
1445				IB_QP_CREATE_SCATTER_FCS |
1446				IB_QP_CREATE_CVLAN_STRIPPING |
1447				IB_QP_CREATE_SOURCE_QPN |
1448				IB_QP_CREATE_PCI_WRITE_END_PADDING)) {
1449		ret = -EINVAL;
1450		goto err_put;
1451	}
1452
1453	if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) {
1454		if (!rdma_uattrs_has_raw_cap(attrs)) {
1455			ret = -EPERM;
1456			goto err_put;
1457		}
1458
1459		attr.source_qpn = cmd->source_qpn;
1460	}
1461
1462	qp = ib_create_qp_user(device, pd, &attr, &attrs->driver_udata, obj,
1463			       KBUILD_MODNAME);
1464	if (IS_ERR(qp)) {
1465		ret = PTR_ERR(qp);
1466		goto err_put;
1467	}
1468	ib_qp_usecnt_inc(qp);
1469
1470	obj->uevent.uobject.object = qp;
1471	obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
1472	if (obj->uevent.event_file)
1473		uverbs_uobject_get(&obj->uevent.event_file->uobj);
1474
1475	if (xrcd) {
1476		obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object,
1477					  uobject);
1478		atomic_inc(&obj->uxrcd->refcnt);
1479		uobj_put_read(xrcd_uobj);
1480	}
1481
1482	if (pd)
1483		uobj_put_obj_read(pd);
1484	if (scq)
1485		rdma_lookup_put_uobject(&scq->uobject->uevent.uobject,
1486					UVERBS_LOOKUP_READ);
1487	if (rcq && rcq != scq)
1488		rdma_lookup_put_uobject(&rcq->uobject->uevent.uobject,
1489					UVERBS_LOOKUP_READ);
1490	if (srq)
1491		rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
1492					UVERBS_LOOKUP_READ);
1493	if (ind_tbl)
1494		uobj_put_obj_read(ind_tbl);
1495	uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
1496
1497	resp.base.qpn             = qp->qp_num;
1498	resp.base.qp_handle       = obj->uevent.uobject.id;
1499	resp.base.max_recv_sge    = attr.cap.max_recv_sge;
1500	resp.base.max_send_sge    = attr.cap.max_send_sge;
1501	resp.base.max_recv_wr     = attr.cap.max_recv_wr;
1502	resp.base.max_send_wr     = attr.cap.max_send_wr;
1503	resp.base.max_inline_data = attr.cap.max_inline_data;
1504	resp.response_length = uverbs_response_length(attrs, sizeof(resp));
1505	return uverbs_response(attrs, &resp, sizeof(resp));
1506
1507err_put:
1508	if (!IS_ERR(xrcd_uobj))
1509		uobj_put_read(xrcd_uobj);
1510	if (!IS_ERR_OR_NULL(pd))
1511		uobj_put_obj_read(pd);
1512	if (!IS_ERR_OR_NULL(scq))
1513		rdma_lookup_put_uobject(&scq->uobject->uevent.uobject,
1514					UVERBS_LOOKUP_READ);
1515	if (!IS_ERR_OR_NULL(rcq) && rcq != scq)
1516		rdma_lookup_put_uobject(&rcq->uobject->uevent.uobject,
1517					UVERBS_LOOKUP_READ);
1518	if (!IS_ERR_OR_NULL(srq))
1519		rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
1520					UVERBS_LOOKUP_READ);
1521	if (!IS_ERR_OR_NULL(ind_tbl))
1522		uobj_put_obj_read(ind_tbl);
1523
1524	uobj_alloc_abort(&obj->uevent.uobject, attrs);
1525	return ret;
1526}
1527
1528static int ib_uverbs_create_qp(struct uverbs_attr_bundle *attrs)
1529{
1530	struct ib_uverbs_create_qp      cmd;
1531	struct ib_uverbs_ex_create_qp	cmd_ex;
1532	int ret;
1533
1534	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1535	if (ret)
1536		return ret;
1537
1538	memset(&cmd_ex, 0, sizeof(cmd_ex));
1539	cmd_ex.user_handle = cmd.user_handle;
1540	cmd_ex.pd_handle = cmd.pd_handle;
1541	cmd_ex.send_cq_handle = cmd.send_cq_handle;
1542	cmd_ex.recv_cq_handle = cmd.recv_cq_handle;
1543	cmd_ex.srq_handle = cmd.srq_handle;
1544	cmd_ex.max_send_wr = cmd.max_send_wr;
1545	cmd_ex.max_recv_wr = cmd.max_recv_wr;
1546	cmd_ex.max_send_sge = cmd.max_send_sge;
1547	cmd_ex.max_recv_sge = cmd.max_recv_sge;
1548	cmd_ex.max_inline_data = cmd.max_inline_data;
1549	cmd_ex.sq_sig_all = cmd.sq_sig_all;
1550	cmd_ex.qp_type = cmd.qp_type;
1551	cmd_ex.is_srq = cmd.is_srq;
1552
1553	return create_qp(attrs, &cmd_ex);
1554}
1555
1556static int ib_uverbs_ex_create_qp(struct uverbs_attr_bundle *attrs)
1557{
1558	struct ib_uverbs_ex_create_qp cmd;
1559	int ret;
1560
1561	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1562	if (ret)
1563		return ret;
1564
1565	if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK)
1566		return -EINVAL;
1567
1568	if (cmd.reserved)
1569		return -EINVAL;
1570
1571	return create_qp(attrs, &cmd);
1572}
1573
1574static int ib_uverbs_open_qp(struct uverbs_attr_bundle *attrs)
1575{
1576	struct ib_uverbs_create_qp_resp resp = {};
1577	struct ib_uverbs_open_qp        cmd;
1578	struct ib_uqp_object           *obj;
1579	struct ib_xrcd		       *xrcd;
1580	struct ib_qp                   *qp;
1581	struct ib_qp_open_attr          attr = {};
1582	int ret;
1583	struct ib_uobject *xrcd_uobj;
1584	struct ib_device *ib_dev;
1585
1586	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1587	if (ret)
1588		return ret;
1589
1590	obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs,
1591						 &ib_dev);
1592	if (IS_ERR(obj))
1593		return PTR_ERR(obj);
1594
1595	xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd.pd_handle, attrs);
1596	if (IS_ERR(xrcd_uobj)) {
1597		ret = -EINVAL;
1598		goto err_put;
1599	}
1600
1601	xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1602	if (!xrcd) {
1603		ret = -EINVAL;
1604		goto err_xrcd;
1605	}
1606
1607	attr.event_handler = ib_uverbs_qp_event_handler;
1608	attr.qp_num        = cmd.qpn;
1609	attr.qp_type       = cmd.qp_type;
1610
1611	INIT_LIST_HEAD(&obj->uevent.event_list);
1612	INIT_LIST_HEAD(&obj->mcast_list);
1613
1614	qp = ib_open_qp(xrcd, &attr);
1615	if (IS_ERR(qp)) {
1616		ret = PTR_ERR(qp);
1617		goto err_xrcd;
1618	}
1619
1620	obj->uevent.uobject.object = qp;
1621	obj->uevent.uobject.user_handle = cmd.user_handle;
1622
1623	obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
1624	atomic_inc(&obj->uxrcd->refcnt);
1625	qp->uobject = obj;
1626	uobj_put_read(xrcd_uobj);
1627	uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
1628
1629	resp.qpn = qp->qp_num;
1630	resp.qp_handle = obj->uevent.uobject.id;
1631	return uverbs_response(attrs, &resp, sizeof(resp));
1632
1633err_xrcd:
1634	uobj_put_read(xrcd_uobj);
1635err_put:
1636	uobj_alloc_abort(&obj->uevent.uobject, attrs);
1637	return ret;
1638}
1639
1640static void copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest *uverb_attr,
1641				   struct rdma_ah_attr *rdma_attr)
1642{
1643	const struct ib_global_route   *grh;
1644
1645	uverb_attr->dlid              = rdma_ah_get_dlid(rdma_attr);
1646	uverb_attr->sl                = rdma_ah_get_sl(rdma_attr);
1647	uverb_attr->src_path_bits     = rdma_ah_get_path_bits(rdma_attr);
1648	uverb_attr->static_rate       = rdma_ah_get_static_rate(rdma_attr);
1649	uverb_attr->is_global         = !!(rdma_ah_get_ah_flags(rdma_attr) &
1650					 IB_AH_GRH);
1651	if (uverb_attr->is_global) {
1652		grh = rdma_ah_read_grh(rdma_attr);
1653		memcpy(uverb_attr->dgid, grh->dgid.raw, 16);
1654		uverb_attr->flow_label        = grh->flow_label;
1655		uverb_attr->sgid_index        = grh->sgid_index;
1656		uverb_attr->hop_limit         = grh->hop_limit;
1657		uverb_attr->traffic_class     = grh->traffic_class;
1658	}
1659	uverb_attr->port_num          = rdma_ah_get_port_num(rdma_attr);
1660}
1661
1662static int ib_uverbs_query_qp(struct uverbs_attr_bundle *attrs)
1663{
1664	struct ib_uverbs_query_qp      cmd;
1665	struct ib_uverbs_query_qp_resp resp;
1666	struct ib_qp                   *qp;
1667	struct ib_qp_attr              *attr;
1668	struct ib_qp_init_attr         *init_attr;
1669	int                            ret;
1670
1671	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1672	if (ret)
1673		return ret;
1674
1675	attr      = kmalloc(sizeof *attr, GFP_KERNEL);
1676	init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL);
1677	if (!attr || !init_attr) {
1678		ret = -ENOMEM;
1679		goto out;
1680	}
1681
1682	qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
1683	if (IS_ERR(qp)) {
1684		ret = PTR_ERR(qp);
1685		goto out;
1686	}
1687
1688	ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr);
1689
1690	rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
1691				UVERBS_LOOKUP_READ);
1692
1693	if (ret)
1694		goto out;
1695
1696	memset(&resp, 0, sizeof resp);
1697
1698	resp.qp_state               = attr->qp_state;
1699	resp.cur_qp_state           = attr->cur_qp_state;
1700	resp.path_mtu               = attr->path_mtu;
1701	resp.path_mig_state         = attr->path_mig_state;
1702	resp.qkey                   = attr->qkey;
1703	resp.rq_psn                 = attr->rq_psn;
1704	resp.sq_psn                 = attr->sq_psn;
1705	resp.dest_qp_num            = attr->dest_qp_num;
1706	resp.qp_access_flags        = attr->qp_access_flags;
1707	resp.pkey_index             = attr->pkey_index;
1708	resp.alt_pkey_index         = attr->alt_pkey_index;
1709	resp.sq_draining            = attr->sq_draining;
1710	resp.max_rd_atomic          = attr->max_rd_atomic;
1711	resp.max_dest_rd_atomic     = attr->max_dest_rd_atomic;
1712	resp.min_rnr_timer          = attr->min_rnr_timer;
1713	resp.port_num               = attr->port_num;
1714	resp.timeout                = attr->timeout;
1715	resp.retry_cnt              = attr->retry_cnt;
1716	resp.rnr_retry              = attr->rnr_retry;
1717	resp.alt_port_num           = attr->alt_port_num;
1718	resp.alt_timeout            = attr->alt_timeout;
1719
1720	copy_ah_attr_to_uverbs(&resp.dest, &attr->ah_attr);
1721	copy_ah_attr_to_uverbs(&resp.alt_dest, &attr->alt_ah_attr);
1722
1723	resp.max_send_wr            = init_attr->cap.max_send_wr;
1724	resp.max_recv_wr            = init_attr->cap.max_recv_wr;
1725	resp.max_send_sge           = init_attr->cap.max_send_sge;
1726	resp.max_recv_sge           = init_attr->cap.max_recv_sge;
1727	resp.max_inline_data        = init_attr->cap.max_inline_data;
1728	resp.sq_sig_all             = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
1729
1730	ret = uverbs_response(attrs, &resp, sizeof(resp));
1731
1732out:
1733	kfree(attr);
1734	kfree(init_attr);
1735
1736	return ret;
1737}
1738
1739/* Remove ignored fields set in the attribute mask */
1740static int modify_qp_mask(enum ib_qp_type qp_type, int mask)
1741{
1742	switch (qp_type) {
1743	case IB_QPT_XRC_INI:
1744		return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER);
1745	case IB_QPT_XRC_TGT:
1746		return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT |
1747				IB_QP_RNR_RETRY);
1748	default:
1749		return mask;
1750	}
1751}
1752
1753static void copy_ah_attr_from_uverbs(struct ib_device *dev,
1754				     struct rdma_ah_attr *rdma_attr,
1755				     struct ib_uverbs_qp_dest *uverb_attr)
1756{
1757	rdma_attr->type = rdma_ah_find_type(dev, uverb_attr->port_num);
1758	if (uverb_attr->is_global) {
1759		rdma_ah_set_grh(rdma_attr, NULL,
1760				uverb_attr->flow_label,
1761				uverb_attr->sgid_index,
1762				uverb_attr->hop_limit,
1763				uverb_attr->traffic_class);
1764		rdma_ah_set_dgid_raw(rdma_attr, uverb_attr->dgid);
1765	} else {
1766		rdma_ah_set_ah_flags(rdma_attr, 0);
1767	}
1768	rdma_ah_set_dlid(rdma_attr, uverb_attr->dlid);
1769	rdma_ah_set_sl(rdma_attr, uverb_attr->sl);
1770	rdma_ah_set_path_bits(rdma_attr, uverb_attr->src_path_bits);
1771	rdma_ah_set_static_rate(rdma_attr, uverb_attr->static_rate);
1772	rdma_ah_set_port_num(rdma_attr, uverb_attr->port_num);
1773	rdma_ah_set_make_grd(rdma_attr, false);
1774}
1775
1776static int modify_qp(struct uverbs_attr_bundle *attrs,
1777		     struct ib_uverbs_ex_modify_qp *cmd)
1778{
1779	struct ib_qp_attr *attr;
1780	struct ib_qp *qp;
1781	int ret;
1782
1783	attr = kzalloc(sizeof(*attr), GFP_KERNEL);
1784	if (!attr)
1785		return -ENOMEM;
1786
1787	qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd->base.qp_handle,
1788			       attrs);
1789	if (IS_ERR(qp)) {
1790		ret = PTR_ERR(qp);
1791		goto out;
1792	}
1793
1794	if ((cmd->base.attr_mask & IB_QP_PORT) &&
1795	    !rdma_is_port_valid(qp->device, cmd->base.port_num)) {
1796		ret = -EINVAL;
1797		goto release_qp;
1798	}
1799
1800	if ((cmd->base.attr_mask & IB_QP_AV)) {
1801		if (!rdma_is_port_valid(qp->device, cmd->base.dest.port_num)) {
1802			ret = -EINVAL;
1803			goto release_qp;
1804		}
1805
1806		if (cmd->base.attr_mask & IB_QP_STATE &&
1807		    cmd->base.qp_state == IB_QPS_RTR) {
1808		/* We are in INIT->RTR TRANSITION (if we are not,
1809		 * this transition will be rejected in subsequent checks).
1810		 * In the INIT->RTR transition, we cannot have IB_QP_PORT set,
1811		 * but the IB_QP_STATE flag is required.
1812		 *
1813		 * Since kernel 3.14 (commit dbf727de7440), the uverbs driver,
1814		 * when IB_QP_AV is set, has required inclusion of a valid
1815		 * port number in the primary AV. (AVs are created and handled
1816		 * differently for infiniband and ethernet (RoCE) ports).
1817		 *
1818		 * Check the port number included in the primary AV against
1819		 * the port number in the qp struct, which was set (and saved)
1820		 * in the RST->INIT transition.
1821		 */
1822			if (cmd->base.dest.port_num != qp->real_qp->port) {
1823				ret = -EINVAL;
1824				goto release_qp;
1825			}
1826		} else {
1827		/* We are in SQD->SQD. (If we are not, this transition will
1828		 * be rejected later in the verbs layer checks).
1829		 * Check for both IB_QP_PORT and IB_QP_AV, these can be set
1830		 * together in the SQD->SQD transition.
1831		 *
1832		 * If only IP_QP_AV was set, add in IB_QP_PORT as well (the
1833		 * verbs layer driver does not track primary port changes
1834		 * resulting from path migration. Thus, in SQD, if the primary
1835		 * AV is modified, the primary port should also be modified).
1836		 *
1837		 * Note that in this transition, the IB_QP_STATE flag
1838		 * is not allowed.
1839		 */
1840			if (((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT))
1841			     == (IB_QP_AV | IB_QP_PORT)) &&
1842			    cmd->base.port_num != cmd->base.dest.port_num) {
1843				ret = -EINVAL;
1844				goto release_qp;
1845			}
1846			if ((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT))
1847			    == IB_QP_AV) {
1848				cmd->base.attr_mask |= IB_QP_PORT;
1849				cmd->base.port_num = cmd->base.dest.port_num;
1850			}
1851		}
1852	}
1853
1854	if ((cmd->base.attr_mask & IB_QP_ALT_PATH) &&
1855	    (!rdma_is_port_valid(qp->device, cmd->base.alt_port_num) ||
1856	    !rdma_is_port_valid(qp->device, cmd->base.alt_dest.port_num) ||
1857	    cmd->base.alt_port_num != cmd->base.alt_dest.port_num)) {
1858		ret = -EINVAL;
1859		goto release_qp;
1860	}
1861
1862	if ((cmd->base.attr_mask & IB_QP_CUR_STATE &&
1863	    cmd->base.cur_qp_state > IB_QPS_ERR) ||
1864	    (cmd->base.attr_mask & IB_QP_STATE &&
1865	    cmd->base.qp_state > IB_QPS_ERR)) {
1866		ret = -EINVAL;
1867		goto release_qp;
1868	}
1869
1870	if (cmd->base.attr_mask & IB_QP_STATE)
1871		attr->qp_state = cmd->base.qp_state;
1872	if (cmd->base.attr_mask & IB_QP_CUR_STATE)
1873		attr->cur_qp_state = cmd->base.cur_qp_state;
1874	if (cmd->base.attr_mask & IB_QP_PATH_MTU)
1875		attr->path_mtu = cmd->base.path_mtu;
1876	if (cmd->base.attr_mask & IB_QP_PATH_MIG_STATE)
1877		attr->path_mig_state = cmd->base.path_mig_state;
1878	if (cmd->base.attr_mask & IB_QP_QKEY) {
1879		if (cmd->base.qkey & IB_QP_SET_QKEY &&
1880		    !(rdma_nl_get_privileged_qkey() ||
1881		      rdma_uattrs_has_raw_cap(attrs))) {
1882			ret = -EPERM;
1883			goto release_qp;
1884		}
1885		attr->qkey = cmd->base.qkey;
1886	}
1887	if (cmd->base.attr_mask & IB_QP_RQ_PSN)
1888		attr->rq_psn = cmd->base.rq_psn;
1889	if (cmd->base.attr_mask & IB_QP_SQ_PSN)
1890		attr->sq_psn = cmd->base.sq_psn;
1891	if (cmd->base.attr_mask & IB_QP_DEST_QPN)
1892		attr->dest_qp_num = cmd->base.dest_qp_num;
1893	if (cmd->base.attr_mask & IB_QP_ACCESS_FLAGS)
1894		attr->qp_access_flags = cmd->base.qp_access_flags;
1895	if (cmd->base.attr_mask & IB_QP_PKEY_INDEX)
1896		attr->pkey_index = cmd->base.pkey_index;
1897	if (cmd->base.attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
1898		attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify;
1899	if (cmd->base.attr_mask & IB_QP_MAX_QP_RD_ATOMIC)
1900		attr->max_rd_atomic = cmd->base.max_rd_atomic;
1901	if (cmd->base.attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
1902		attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic;
1903	if (cmd->base.attr_mask & IB_QP_MIN_RNR_TIMER)
1904		attr->min_rnr_timer = cmd->base.min_rnr_timer;
1905	if (cmd->base.attr_mask & IB_QP_PORT)
1906		attr->port_num = cmd->base.port_num;
1907	if (cmd->base.attr_mask & IB_QP_TIMEOUT)
1908		attr->timeout = cmd->base.timeout;
1909	if (cmd->base.attr_mask & IB_QP_RETRY_CNT)
1910		attr->retry_cnt = cmd->base.retry_cnt;
1911	if (cmd->base.attr_mask & IB_QP_RNR_RETRY)
1912		attr->rnr_retry = cmd->base.rnr_retry;
1913	if (cmd->base.attr_mask & IB_QP_ALT_PATH) {
1914		attr->alt_port_num = cmd->base.alt_port_num;
1915		attr->alt_timeout = cmd->base.alt_timeout;
1916		attr->alt_pkey_index = cmd->base.alt_pkey_index;
1917	}
1918	if (cmd->base.attr_mask & IB_QP_RATE_LIMIT)
1919		attr->rate_limit = cmd->rate_limit;
1920
1921	if (cmd->base.attr_mask & IB_QP_AV)
1922		copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr,
1923					 &cmd->base.dest);
1924
1925	if (cmd->base.attr_mask & IB_QP_ALT_PATH)
1926		copy_ah_attr_from_uverbs(qp->device, &attr->alt_ah_attr,
1927					 &cmd->base.alt_dest);
1928
1929	ret = ib_modify_qp_with_udata(qp, attr,
1930				      modify_qp_mask(qp->qp_type,
1931						     cmd->base.attr_mask),
1932				      &attrs->driver_udata);
1933
1934release_qp:
1935	rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
1936				UVERBS_LOOKUP_READ);
1937out:
1938	kfree(attr);
1939
1940	return ret;
1941}
1942
1943static int ib_uverbs_modify_qp(struct uverbs_attr_bundle *attrs)
1944{
1945	struct ib_uverbs_ex_modify_qp cmd;
1946	int ret;
1947
1948	ret = uverbs_request(attrs, &cmd.base, sizeof(cmd.base));
1949	if (ret)
1950		return ret;
1951
1952	if (cmd.base.attr_mask & ~IB_QP_ATTR_STANDARD_BITS)
1953		return -EOPNOTSUPP;
1954
1955	return modify_qp(attrs, &cmd);
1956}
1957
1958static int ib_uverbs_ex_modify_qp(struct uverbs_attr_bundle *attrs)
1959{
1960	struct ib_uverbs_ex_modify_qp cmd;
1961	struct ib_uverbs_ex_modify_qp_resp resp = {
1962		.response_length = uverbs_response_length(attrs, sizeof(resp))
1963	};
1964	int ret;
1965
1966	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1967	if (ret)
1968		return ret;
1969
1970	/*
1971	 * Last bit is reserved for extending the attr_mask by
1972	 * using another field.
1973	 */
1974	if (cmd.base.attr_mask & ~(IB_QP_ATTR_STANDARD_BITS | IB_QP_RATE_LIMIT))
1975		return -EOPNOTSUPP;
1976
1977	ret = modify_qp(attrs, &cmd);
1978	if (ret)
1979		return ret;
1980
1981	return uverbs_response(attrs, &resp, sizeof(resp));
1982}
1983
1984static int ib_uverbs_destroy_qp(struct uverbs_attr_bundle *attrs)
1985{
1986	struct ib_uverbs_destroy_qp      cmd;
1987	struct ib_uverbs_destroy_qp_resp resp;
1988	struct ib_uobject		*uobj;
1989	struct ib_uqp_object        	*obj;
1990	int ret;
1991
1992	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1993	if (ret)
1994		return ret;
1995
1996	uobj = uobj_get_destroy(UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
1997	if (IS_ERR(uobj))
1998		return PTR_ERR(uobj);
1999
2000	obj = container_of(uobj, struct ib_uqp_object, uevent.uobject);
2001	memset(&resp, 0, sizeof(resp));
2002	resp.events_reported = obj->uevent.events_reported;
2003
2004	uobj_put_destroy(uobj);
2005
2006	return uverbs_response(attrs, &resp, sizeof(resp));
2007}
2008
2009static void *alloc_wr(size_t wr_size, __u32 num_sge)
2010{
2011	if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof(struct ib_sge))) /
2012			       sizeof(struct ib_sge))
2013		return NULL;
2014
2015	return kmalloc(ALIGN(wr_size, sizeof(struct ib_sge)) +
2016			       num_sge * sizeof(struct ib_sge),
2017		       GFP_KERNEL);
2018}
2019
2020static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs)
2021{
2022	struct ib_uverbs_post_send      cmd;
2023	struct ib_uverbs_post_send_resp resp;
2024	struct ib_uverbs_send_wr       *user_wr;
2025	struct ib_send_wr              *wr = NULL, *last, *next;
2026	const struct ib_send_wr	       *bad_wr;
2027	struct ib_qp                   *qp;
2028	int                             i, sg_ind;
2029	int				is_ud;
2030	int ret, ret2;
2031	size_t                          next_size;
2032	const struct ib_sge __user *sgls;
2033	const void __user *wqes;
2034	struct uverbs_req_iter iter;
2035
2036	ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2037	if (ret)
2038		return ret;
2039	wqes = uverbs_request_next_ptr(&iter, size_mul(cmd.wqe_size,
2040						       cmd.wr_count));
2041	if (IS_ERR(wqes))
2042		return PTR_ERR(wqes);
2043	sgls = uverbs_request_next_ptr(&iter,
2044				       size_mul(cmd.sge_count,
2045						sizeof(struct ib_uverbs_sge)));
2046	if (IS_ERR(sgls))
2047		return PTR_ERR(sgls);
2048	ret = uverbs_request_finish(&iter);
2049	if (ret)
2050		return ret;
2051
2052	if (cmd.wqe_size < sizeof(struct ib_uverbs_send_wr))
2053		return -EINVAL;
2054
2055	user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL | __GFP_NOWARN);
2056	if (!user_wr)
2057		return -ENOMEM;
2058
2059	qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2060	if (IS_ERR(qp)) {
2061		ret = PTR_ERR(qp);
2062		goto out;
2063	}
2064
2065	is_ud = qp->qp_type == IB_QPT_UD;
2066	sg_ind = 0;
2067	last = NULL;
2068	for (i = 0; i < cmd.wr_count; ++i) {
2069		if (copy_from_user(user_wr, wqes + i * cmd.wqe_size,
2070				   cmd.wqe_size)) {
2071			ret = -EFAULT;
2072			goto out_put;
2073		}
2074
2075		if (user_wr->num_sge + sg_ind > cmd.sge_count) {
2076			ret = -EINVAL;
2077			goto out_put;
2078		}
2079
2080		if (is_ud) {
2081			struct ib_ud_wr *ud;
2082
2083			if (user_wr->opcode != IB_WR_SEND &&
2084			    user_wr->opcode != IB_WR_SEND_WITH_IMM) {
2085				ret = -EINVAL;
2086				goto out_put;
2087			}
2088
2089			next_size = sizeof(*ud);
2090			ud = alloc_wr(next_size, user_wr->num_sge);
2091			if (!ud) {
2092				ret = -ENOMEM;
2093				goto out_put;
2094			}
2095
2096			ud->ah = uobj_get_obj_read(ah, UVERBS_OBJECT_AH,
2097						   user_wr->wr.ud.ah, attrs);
2098			if (IS_ERR(ud->ah)) {
2099				ret = PTR_ERR(ud->ah);
2100				kfree(ud);
2101				goto out_put;
2102			}
2103			ud->remote_qpn = user_wr->wr.ud.remote_qpn;
2104			ud->remote_qkey = user_wr->wr.ud.remote_qkey;
2105
2106			next = &ud->wr;
2107		} else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
2108			   user_wr->opcode == IB_WR_RDMA_WRITE ||
2109			   user_wr->opcode == IB_WR_RDMA_READ) {
2110			struct ib_rdma_wr *rdma;
2111
2112			next_size = sizeof(*rdma);
2113			rdma = alloc_wr(next_size, user_wr->num_sge);
2114			if (!rdma) {
2115				ret = -ENOMEM;
2116				goto out_put;
2117			}
2118
2119			rdma->remote_addr = user_wr->wr.rdma.remote_addr;
2120			rdma->rkey = user_wr->wr.rdma.rkey;
2121
2122			next = &rdma->wr;
2123		} else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP ||
2124			   user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) {
2125			struct ib_atomic_wr *atomic;
2126
2127			next_size = sizeof(*atomic);
2128			atomic = alloc_wr(next_size, user_wr->num_sge);
2129			if (!atomic) {
2130				ret = -ENOMEM;
2131				goto out_put;
2132			}
2133
2134			atomic->remote_addr = user_wr->wr.atomic.remote_addr;
2135			atomic->compare_add = user_wr->wr.atomic.compare_add;
2136			atomic->swap = user_wr->wr.atomic.swap;
2137			atomic->rkey = user_wr->wr.atomic.rkey;
2138
2139			next = &atomic->wr;
2140		} else if (user_wr->opcode == IB_WR_SEND ||
2141			   user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2142			   user_wr->opcode == IB_WR_SEND_WITH_INV) {
2143			next_size = sizeof(*next);
2144			next = alloc_wr(next_size, user_wr->num_sge);
2145			if (!next) {
2146				ret = -ENOMEM;
2147				goto out_put;
2148			}
2149		} else {
2150			ret = -EINVAL;
2151			goto out_put;
2152		}
2153
2154		if (user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2155		    user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) {
2156			next->ex.imm_data =
2157					(__be32 __force) user_wr->ex.imm_data;
2158		} else if (user_wr->opcode == IB_WR_SEND_WITH_INV) {
2159			next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey;
2160		}
2161
2162		if (!last)
2163			wr = next;
2164		else
2165			last->next = next;
2166		last = next;
2167
2168		next->next       = NULL;
2169		next->wr_id      = user_wr->wr_id;
2170		next->num_sge    = user_wr->num_sge;
2171		next->opcode     = user_wr->opcode;
2172		next->send_flags = user_wr->send_flags;
2173
2174		if (next->num_sge) {
2175			next->sg_list = (void *) next +
2176				ALIGN(next_size, sizeof(struct ib_sge));
2177			if (copy_from_user(next->sg_list, sgls + sg_ind,
2178					   next->num_sge *
2179						   sizeof(struct ib_sge))) {
2180				ret = -EFAULT;
2181				goto out_put;
2182			}
2183			sg_ind += next->num_sge;
2184		} else
2185			next->sg_list = NULL;
2186	}
2187
2188	resp.bad_wr = 0;
2189	ret = qp->device->ops.post_send(qp->real_qp, wr, &bad_wr);
2190	if (ret)
2191		for (next = wr; next; next = next->next) {
2192			++resp.bad_wr;
2193			if (next == bad_wr)
2194				break;
2195		}
2196
2197	ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2198	if (ret2)
2199		ret = ret2;
2200
2201out_put:
2202	rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2203				UVERBS_LOOKUP_READ);
2204
2205	while (wr) {
2206		if (is_ud && ud_wr(wr)->ah)
2207			uobj_put_obj_read(ud_wr(wr)->ah);
2208		next = wr->next;
2209		kfree(wr);
2210		wr = next;
2211	}
2212
2213out:
2214	kfree(user_wr);
2215
2216	return ret;
2217}
2218
2219static struct ib_recv_wr *
2220ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count,
2221			  u32 wqe_size, u32 sge_count)
2222{
2223	struct ib_uverbs_recv_wr *user_wr;
2224	struct ib_recv_wr        *wr = NULL, *last, *next;
2225	int                       sg_ind;
2226	int                       i;
2227	int                       ret;
2228	const struct ib_sge __user *sgls;
2229	const void __user *wqes;
2230
2231	if (wqe_size < sizeof(struct ib_uverbs_recv_wr))
2232		return ERR_PTR(-EINVAL);
2233
2234	wqes = uverbs_request_next_ptr(iter, size_mul(wqe_size, wr_count));
2235	if (IS_ERR(wqes))
2236		return ERR_CAST(wqes);
2237	sgls = uverbs_request_next_ptr(iter, size_mul(sge_count,
2238						      sizeof(struct ib_uverbs_sge)));
2239	if (IS_ERR(sgls))
2240		return ERR_CAST(sgls);
2241	ret = uverbs_request_finish(iter);
2242	if (ret)
2243		return ERR_PTR(ret);
2244
2245	user_wr = kmalloc(wqe_size, GFP_KERNEL | __GFP_NOWARN);
2246	if (!user_wr)
2247		return ERR_PTR(-ENOMEM);
2248
2249	sg_ind = 0;
2250	last = NULL;
2251	for (i = 0; i < wr_count; ++i) {
2252		if (copy_from_user(user_wr, wqes + i * wqe_size,
2253				   wqe_size)) {
2254			ret = -EFAULT;
2255			goto err;
2256		}
2257
2258		if (user_wr->num_sge + sg_ind > sge_count) {
2259			ret = -EINVAL;
2260			goto err;
2261		}
2262
2263		if (user_wr->num_sge >=
2264		    (U32_MAX - ALIGN(sizeof(*next), sizeof(struct ib_sge))) /
2265			    sizeof(struct ib_sge)) {
2266			ret = -EINVAL;
2267			goto err;
2268		}
2269
2270		next = kmalloc(ALIGN(sizeof(*next), sizeof(struct ib_sge)) +
2271				       user_wr->num_sge * sizeof(struct ib_sge),
2272			       GFP_KERNEL);
2273		if (!next) {
2274			ret = -ENOMEM;
2275			goto err;
2276		}
2277
2278		if (!last)
2279			wr = next;
2280		else
2281			last->next = next;
2282		last = next;
2283
2284		next->next       = NULL;
2285		next->wr_id      = user_wr->wr_id;
2286		next->num_sge    = user_wr->num_sge;
2287
2288		if (next->num_sge) {
2289			next->sg_list = (void *)next +
2290				ALIGN(sizeof(*next), sizeof(struct ib_sge));
2291			if (copy_from_user(next->sg_list, sgls + sg_ind,
2292					   next->num_sge *
2293						   sizeof(struct ib_sge))) {
2294				ret = -EFAULT;
2295				goto err;
2296			}
2297			sg_ind += next->num_sge;
2298		} else
2299			next->sg_list = NULL;
2300	}
2301
2302	kfree(user_wr);
2303	return wr;
2304
2305err:
2306	kfree(user_wr);
2307
2308	while (wr) {
2309		next = wr->next;
2310		kfree(wr);
2311		wr = next;
2312	}
2313
2314	return ERR_PTR(ret);
2315}
2316
2317static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs)
2318{
2319	struct ib_uverbs_post_recv      cmd;
2320	struct ib_uverbs_post_recv_resp resp;
2321	struct ib_recv_wr              *wr, *next;
2322	const struct ib_recv_wr	       *bad_wr;
2323	struct ib_qp                   *qp;
2324	int ret, ret2;
2325	struct uverbs_req_iter iter;
2326
2327	ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2328	if (ret)
2329		return ret;
2330
2331	wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size,
2332				       cmd.sge_count);
2333	if (IS_ERR(wr))
2334		return PTR_ERR(wr);
2335
2336	qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2337	if (IS_ERR(qp)) {
2338		ret = PTR_ERR(qp);
2339		goto out;
2340	}
2341
2342	resp.bad_wr = 0;
2343	ret = qp->device->ops.post_recv(qp->real_qp, wr, &bad_wr);
2344
2345	rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2346				UVERBS_LOOKUP_READ);
2347	if (ret) {
2348		for (next = wr; next; next = next->next) {
2349			++resp.bad_wr;
2350			if (next == bad_wr)
2351				break;
2352		}
2353	}
2354
2355	ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2356	if (ret2)
2357		ret = ret2;
2358out:
2359	while (wr) {
2360		next = wr->next;
2361		kfree(wr);
2362		wr = next;
2363	}
2364
2365	return ret;
2366}
2367
2368static int ib_uverbs_post_srq_recv(struct uverbs_attr_bundle *attrs)
2369{
2370	struct ib_uverbs_post_srq_recv      cmd;
2371	struct ib_uverbs_post_srq_recv_resp resp;
2372	struct ib_recv_wr                  *wr, *next;
2373	const struct ib_recv_wr		   *bad_wr;
2374	struct ib_srq                      *srq;
2375	int ret, ret2;
2376	struct uverbs_req_iter iter;
2377
2378	ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2379	if (ret)
2380		return ret;
2381
2382	wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size,
2383				       cmd.sge_count);
2384	if (IS_ERR(wr))
2385		return PTR_ERR(wr);
2386
2387	srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
2388	if (IS_ERR(srq)) {
2389		ret = PTR_ERR(srq);
2390		goto out;
2391	}
2392
2393	resp.bad_wr = 0;
2394	ret = srq->device->ops.post_srq_recv(srq, wr, &bad_wr);
2395
2396	rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
2397				UVERBS_LOOKUP_READ);
2398
2399	if (ret)
2400		for (next = wr; next; next = next->next) {
2401			++resp.bad_wr;
2402			if (next == bad_wr)
2403				break;
2404		}
2405
2406	ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2407	if (ret2)
2408		ret = ret2;
2409
2410out:
2411	while (wr) {
2412		next = wr->next;
2413		kfree(wr);
2414		wr = next;
2415	}
2416
2417	return ret;
2418}
2419
2420static int ib_uverbs_create_ah(struct uverbs_attr_bundle *attrs)
2421{
2422	struct ib_uverbs_create_ah	 cmd;
2423	struct ib_uverbs_create_ah_resp	 resp;
2424	struct ib_uobject		*uobj;
2425	struct ib_pd			*pd;
2426	struct ib_ah			*ah;
2427	struct rdma_ah_attr		attr = {};
2428	int ret;
2429	struct ib_device *ib_dev;
2430
2431	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2432	if (ret)
2433		return ret;
2434
2435	uobj = uobj_alloc(UVERBS_OBJECT_AH, attrs, &ib_dev);
2436	if (IS_ERR(uobj))
2437		return PTR_ERR(uobj);
2438
2439	if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num)) {
2440		ret = -EINVAL;
2441		goto err;
2442	}
2443
2444	pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
2445	if (IS_ERR(pd)) {
2446		ret = PTR_ERR(pd);
2447		goto err;
2448	}
2449
2450	attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num);
2451	rdma_ah_set_make_grd(&attr, false);
2452	rdma_ah_set_dlid(&attr, cmd.attr.dlid);
2453	rdma_ah_set_sl(&attr, cmd.attr.sl);
2454	rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits);
2455	rdma_ah_set_static_rate(&attr, cmd.attr.static_rate);
2456	rdma_ah_set_port_num(&attr, cmd.attr.port_num);
2457
2458	if (cmd.attr.is_global) {
2459		rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label,
2460				cmd.attr.grh.sgid_index,
2461				cmd.attr.grh.hop_limit,
2462				cmd.attr.grh.traffic_class);
2463		rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid);
2464	} else {
2465		rdma_ah_set_ah_flags(&attr, 0);
2466	}
2467
2468	ah = rdma_create_user_ah(pd, &attr, &attrs->driver_udata);
2469	if (IS_ERR(ah)) {
2470		ret = PTR_ERR(ah);
2471		goto err_put;
2472	}
2473
2474	ah->uobject  = uobj;
2475	uobj->user_handle = cmd.user_handle;
2476	uobj->object = ah;
2477	uobj_put_obj_read(pd);
2478	uobj_finalize_uobj_create(uobj, attrs);
2479
2480	resp.ah_handle = uobj->id;
2481	return uverbs_response(attrs, &resp, sizeof(resp));
2482
2483err_put:
2484	uobj_put_obj_read(pd);
2485err:
2486	uobj_alloc_abort(uobj, attrs);
2487	return ret;
2488}
2489
2490static int ib_uverbs_destroy_ah(struct uverbs_attr_bundle *attrs)
2491{
2492	struct ib_uverbs_destroy_ah cmd;
2493	int ret;
2494
2495	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2496	if (ret)
2497		return ret;
2498
2499	return uobj_perform_destroy(UVERBS_OBJECT_AH, cmd.ah_handle, attrs);
2500}
2501
2502static int ib_uverbs_attach_mcast(struct uverbs_attr_bundle *attrs)
2503{
2504	struct ib_uverbs_attach_mcast cmd;
2505	struct ib_qp                 *qp;
2506	struct ib_uqp_object         *obj;
2507	struct ib_uverbs_mcast_entry *mcast;
2508	int                           ret;
2509
2510	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2511	if (ret)
2512		return ret;
2513
2514	qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2515	if (IS_ERR(qp))
2516		return PTR_ERR(qp);
2517
2518	obj = qp->uobject;
2519
2520	mutex_lock(&obj->mcast_lock);
2521	list_for_each_entry(mcast, &obj->mcast_list, list)
2522		if (cmd.mlid == mcast->lid &&
2523		    !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2524			ret = 0;
2525			goto out_put;
2526		}
2527
2528	mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
2529	if (!mcast) {
2530		ret = -ENOMEM;
2531		goto out_put;
2532	}
2533
2534	mcast->lid = cmd.mlid;
2535	memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
2536
2537	ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
2538	if (!ret)
2539		list_add_tail(&mcast->list, &obj->mcast_list);
2540	else
2541		kfree(mcast);
2542
2543out_put:
2544	mutex_unlock(&obj->mcast_lock);
2545	rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2546				UVERBS_LOOKUP_READ);
2547
2548	return ret;
2549}
2550
2551static int ib_uverbs_detach_mcast(struct uverbs_attr_bundle *attrs)
2552{
2553	struct ib_uverbs_detach_mcast cmd;
2554	struct ib_uqp_object         *obj;
2555	struct ib_qp                 *qp;
2556	struct ib_uverbs_mcast_entry *mcast;
2557	int                           ret;
2558	bool                          found = false;
2559
2560	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2561	if (ret)
2562		return ret;
2563
2564	qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2565	if (IS_ERR(qp))
2566		return PTR_ERR(qp);
2567
2568	obj = qp->uobject;
2569	mutex_lock(&obj->mcast_lock);
2570
2571	list_for_each_entry(mcast, &obj->mcast_list, list)
2572		if (cmd.mlid == mcast->lid &&
2573		    !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2574			list_del(&mcast->list);
2575			kfree(mcast);
2576			found = true;
2577			break;
2578		}
2579
2580	if (!found) {
2581		ret = -EINVAL;
2582		goto out_put;
2583	}
2584
2585	ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid);
2586
2587out_put:
2588	mutex_unlock(&obj->mcast_lock);
2589	rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2590				UVERBS_LOOKUP_READ);
2591	return ret;
2592}
2593
2594struct ib_uflow_resources *flow_resources_alloc(size_t num_specs)
2595{
2596	struct ib_uflow_resources *resources;
2597
2598	resources = kzalloc(sizeof(*resources), GFP_KERNEL);
2599
2600	if (!resources)
2601		return NULL;
2602
2603	if (!num_specs)
2604		goto out;
2605
2606	resources->counters =
2607		kcalloc(num_specs, sizeof(*resources->counters), GFP_KERNEL);
2608	resources->collection =
2609		kcalloc(num_specs, sizeof(*resources->collection), GFP_KERNEL);
2610
2611	if (!resources->counters || !resources->collection)
2612		goto err;
2613
2614out:
2615	resources->max = num_specs;
2616	return resources;
2617
2618err:
2619	kfree(resources->counters);
2620	kfree(resources);
2621
2622	return NULL;
2623}
2624EXPORT_SYMBOL(flow_resources_alloc);
2625
2626void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res)
2627{
2628	unsigned int i;
2629
2630	if (!uflow_res)
2631		return;
2632
2633	for (i = 0; i < uflow_res->collection_num; i++)
2634		atomic_dec(&uflow_res->collection[i]->usecnt);
2635
2636	for (i = 0; i < uflow_res->counters_num; i++)
2637		atomic_dec(&uflow_res->counters[i]->usecnt);
2638
2639	kfree(uflow_res->collection);
2640	kfree(uflow_res->counters);
2641	kfree(uflow_res);
2642}
2643EXPORT_SYMBOL(ib_uverbs_flow_resources_free);
2644
2645void flow_resources_add(struct ib_uflow_resources *uflow_res,
2646			enum ib_flow_spec_type type,
2647			void *ibobj)
2648{
2649	WARN_ON(uflow_res->num >= uflow_res->max);
2650
2651	switch (type) {
2652	case IB_FLOW_SPEC_ACTION_HANDLE:
2653		atomic_inc(&((struct ib_flow_action *)ibobj)->usecnt);
2654		uflow_res->collection[uflow_res->collection_num++] =
2655			(struct ib_flow_action *)ibobj;
2656		break;
2657	case IB_FLOW_SPEC_ACTION_COUNT:
2658		atomic_inc(&((struct ib_counters *)ibobj)->usecnt);
2659		uflow_res->counters[uflow_res->counters_num++] =
2660			(struct ib_counters *)ibobj;
2661		break;
2662	default:
2663		WARN_ON(1);
2664	}
2665
2666	uflow_res->num++;
2667}
2668EXPORT_SYMBOL(flow_resources_add);
2669
2670static int kern_spec_to_ib_spec_action(struct uverbs_attr_bundle *attrs,
2671				       struct ib_uverbs_flow_spec *kern_spec,
2672				       union ib_flow_spec *ib_spec,
2673				       struct ib_uflow_resources *uflow_res)
2674{
2675	ib_spec->type = kern_spec->type;
2676	switch (ib_spec->type) {
2677	case IB_FLOW_SPEC_ACTION_TAG:
2678		if (kern_spec->flow_tag.size !=
2679		    sizeof(struct ib_uverbs_flow_spec_action_tag))
2680			return -EINVAL;
2681
2682		ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag);
2683		ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id;
2684		break;
2685	case IB_FLOW_SPEC_ACTION_DROP:
2686		if (kern_spec->drop.size !=
2687		    sizeof(struct ib_uverbs_flow_spec_action_drop))
2688			return -EINVAL;
2689
2690		ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop);
2691		break;
2692	case IB_FLOW_SPEC_ACTION_HANDLE:
2693		if (kern_spec->action.size !=
2694		    sizeof(struct ib_uverbs_flow_spec_action_handle))
2695			return -EOPNOTSUPP;
2696		ib_spec->action.act = uobj_get_obj_read(flow_action,
2697							UVERBS_OBJECT_FLOW_ACTION,
2698							kern_spec->action.handle,
2699							attrs);
2700		if (IS_ERR(ib_spec->action.act))
2701			return PTR_ERR(ib_spec->action.act);
2702		ib_spec->action.size =
2703			sizeof(struct ib_flow_spec_action_handle);
2704		flow_resources_add(uflow_res,
2705				   IB_FLOW_SPEC_ACTION_HANDLE,
2706				   ib_spec->action.act);
2707		uobj_put_obj_read(ib_spec->action.act);
2708		break;
2709	case IB_FLOW_SPEC_ACTION_COUNT:
2710		if (kern_spec->flow_count.size !=
2711			sizeof(struct ib_uverbs_flow_spec_action_count))
2712			return -EINVAL;
2713		ib_spec->flow_count.counters =
2714			uobj_get_obj_read(counters,
2715					  UVERBS_OBJECT_COUNTERS,
2716					  kern_spec->flow_count.handle,
2717					  attrs);
2718		if (IS_ERR(ib_spec->flow_count.counters))
2719			return PTR_ERR(ib_spec->flow_count.counters);
2720		ib_spec->flow_count.size =
2721				sizeof(struct ib_flow_spec_action_count);
2722		flow_resources_add(uflow_res,
2723				   IB_FLOW_SPEC_ACTION_COUNT,
2724				   ib_spec->flow_count.counters);
2725		uobj_put_obj_read(ib_spec->flow_count.counters);
2726		break;
2727	default:
2728		return -EINVAL;
2729	}
2730	return 0;
2731}
2732
2733static ssize_t spec_filter_size(const void *kern_spec_filter, u16 kern_filter_size,
2734				u16 ib_real_filter_sz)
2735{
2736	/*
2737	 * User space filter structures must be 64 bit aligned, otherwise this
2738	 * may pass, but we won't handle additional new attributes.
2739	 */
2740
2741	if (kern_filter_size > ib_real_filter_sz) {
2742		if (memchr_inv(kern_spec_filter +
2743			       ib_real_filter_sz, 0,
2744			       kern_filter_size - ib_real_filter_sz))
2745			return -EINVAL;
2746		return ib_real_filter_sz;
2747	}
2748	return kern_filter_size;
2749}
2750
2751int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type,
2752					  const void *kern_spec_mask,
2753					  const void *kern_spec_val,
2754					  size_t kern_filter_sz,
2755					  union ib_flow_spec *ib_spec)
2756{
2757	ssize_t actual_filter_sz;
2758	ssize_t ib_filter_sz;
2759
2760	/* User flow spec size must be aligned to 4 bytes */
2761	if (kern_filter_sz != ALIGN(kern_filter_sz, 4))
2762		return -EINVAL;
2763
2764	ib_spec->type = type;
2765
2766	if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL))
2767		return -EINVAL;
2768
2769	switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
2770	case IB_FLOW_SPEC_ETH:
2771		ib_filter_sz = sizeof(struct ib_flow_eth_filter);
2772		actual_filter_sz = spec_filter_size(kern_spec_mask,
2773						    kern_filter_sz,
2774						    ib_filter_sz);
2775		if (actual_filter_sz <= 0)
2776			return -EINVAL;
2777		ib_spec->size = sizeof(struct ib_flow_spec_eth);
2778		memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz);
2779		memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz);
2780		break;
2781	case IB_FLOW_SPEC_IPV4:
2782		ib_filter_sz = sizeof(struct ib_flow_ipv4_filter);
2783		actual_filter_sz = spec_filter_size(kern_spec_mask,
2784						    kern_filter_sz,
2785						    ib_filter_sz);
2786		if (actual_filter_sz <= 0)
2787			return -EINVAL;
2788		ib_spec->size = sizeof(struct ib_flow_spec_ipv4);
2789		memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz);
2790		memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz);
2791		break;
2792	case IB_FLOW_SPEC_IPV6:
2793		ib_filter_sz = sizeof(struct ib_flow_ipv6_filter);
2794		actual_filter_sz = spec_filter_size(kern_spec_mask,
2795						    kern_filter_sz,
2796						    ib_filter_sz);
2797		if (actual_filter_sz <= 0)
2798			return -EINVAL;
2799		ib_spec->size = sizeof(struct ib_flow_spec_ipv6);
2800		memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz);
2801		memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz);
2802
2803		if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) ||
2804		    (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20))
2805			return -EINVAL;
2806		break;
2807	case IB_FLOW_SPEC_TCP:
2808	case IB_FLOW_SPEC_UDP:
2809		ib_filter_sz = sizeof(struct ib_flow_tcp_udp_filter);
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_tcp_udp);
2816		memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz);
2817		memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz);
2818		break;
2819	case IB_FLOW_SPEC_VXLAN_TUNNEL:
2820		ib_filter_sz = sizeof(struct ib_flow_tunnel_filter);
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->tunnel.size = sizeof(struct ib_flow_spec_tunnel);
2827		memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz);
2828		memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz);
2829
2830		if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) ||
2831		    (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24))
2832			return -EINVAL;
2833		break;
2834	case IB_FLOW_SPEC_ESP:
2835		ib_filter_sz = sizeof(struct ib_flow_esp_filter);
2836		actual_filter_sz = spec_filter_size(kern_spec_mask,
2837						    kern_filter_sz,
2838						    ib_filter_sz);
2839		if (actual_filter_sz <= 0)
2840			return -EINVAL;
2841		ib_spec->esp.size = sizeof(struct ib_flow_spec_esp);
2842		memcpy(&ib_spec->esp.val, kern_spec_val, actual_filter_sz);
2843		memcpy(&ib_spec->esp.mask, kern_spec_mask, actual_filter_sz);
2844		break;
2845	case IB_FLOW_SPEC_GRE:
2846		ib_filter_sz = sizeof(struct ib_flow_gre_filter);
2847		actual_filter_sz = spec_filter_size(kern_spec_mask,
2848						    kern_filter_sz,
2849						    ib_filter_sz);
2850		if (actual_filter_sz <= 0)
2851			return -EINVAL;
2852		ib_spec->gre.size = sizeof(struct ib_flow_spec_gre);
2853		memcpy(&ib_spec->gre.val, kern_spec_val, actual_filter_sz);
2854		memcpy(&ib_spec->gre.mask, kern_spec_mask, actual_filter_sz);
2855		break;
2856	case IB_FLOW_SPEC_MPLS:
2857		ib_filter_sz = sizeof(struct ib_flow_mpls_filter);
2858		actual_filter_sz = spec_filter_size(kern_spec_mask,
2859						    kern_filter_sz,
2860						    ib_filter_sz);
2861		if (actual_filter_sz <= 0)
2862			return -EINVAL;
2863		ib_spec->mpls.size = sizeof(struct ib_flow_spec_mpls);
2864		memcpy(&ib_spec->mpls.val, kern_spec_val, actual_filter_sz);
2865		memcpy(&ib_spec->mpls.mask, kern_spec_mask, actual_filter_sz);
2866		break;
2867	default:
2868		return -EINVAL;
2869	}
2870	return 0;
2871}
2872
2873static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec,
2874				       union ib_flow_spec *ib_spec)
2875{
2876	size_t kern_filter_sz;
2877	void *kern_spec_mask;
2878	void *kern_spec_val;
2879
2880	if (check_sub_overflow((size_t)kern_spec->hdr.size,
2881			       sizeof(struct ib_uverbs_flow_spec_hdr),
2882			       &kern_filter_sz))
2883		return -EINVAL;
2884
2885	kern_filter_sz /= 2;
2886
2887	kern_spec_val = (void *)kern_spec +
2888		sizeof(struct ib_uverbs_flow_spec_hdr);
2889	kern_spec_mask = kern_spec_val + kern_filter_sz;
2890
2891	return ib_uverbs_kern_spec_to_ib_spec_filter(kern_spec->type,
2892						     kern_spec_mask,
2893						     kern_spec_val,
2894						     kern_filter_sz, ib_spec);
2895}
2896
2897static int kern_spec_to_ib_spec(struct uverbs_attr_bundle *attrs,
2898				struct ib_uverbs_flow_spec *kern_spec,
2899				union ib_flow_spec *ib_spec,
2900				struct ib_uflow_resources *uflow_res)
2901{
2902	if (kern_spec->reserved)
2903		return -EINVAL;
2904
2905	if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG)
2906		return kern_spec_to_ib_spec_action(attrs, kern_spec, ib_spec,
2907						   uflow_res);
2908	else
2909		return kern_spec_to_ib_spec_filter(kern_spec, ib_spec);
2910}
2911
2912static int ib_uverbs_ex_create_wq(struct uverbs_attr_bundle *attrs)
2913{
2914	struct ib_uverbs_ex_create_wq cmd;
2915	struct ib_uverbs_ex_create_wq_resp resp = {};
2916	struct ib_uwq_object           *obj;
2917	int err = 0;
2918	struct ib_cq *cq;
2919	struct ib_pd *pd;
2920	struct ib_wq *wq;
2921	struct ib_wq_init_attr wq_init_attr = {};
2922	struct ib_device *ib_dev;
2923
2924	err = uverbs_request(attrs, &cmd, sizeof(cmd));
2925	if (err)
2926		return err;
2927
2928	if (cmd.comp_mask)
2929		return -EOPNOTSUPP;
2930
2931	obj = (struct ib_uwq_object *)uobj_alloc(UVERBS_OBJECT_WQ, attrs,
2932						 &ib_dev);
2933	if (IS_ERR(obj))
2934		return PTR_ERR(obj);
2935
2936	pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
2937	if (IS_ERR(pd)) {
2938		err = PTR_ERR(pd);
2939		goto err_uobj;
2940	}
2941
2942	cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
2943	if (IS_ERR(cq)) {
2944		err = PTR_ERR(cq);
2945		goto err_put_pd;
2946	}
2947
2948	wq_init_attr.cq = cq;
2949	wq_init_attr.max_sge = cmd.max_sge;
2950	wq_init_attr.max_wr = cmd.max_wr;
2951	wq_init_attr.wq_type = cmd.wq_type;
2952	wq_init_attr.event_handler = ib_uverbs_wq_event_handler;
2953	wq_init_attr.create_flags = cmd.create_flags;
2954	INIT_LIST_HEAD(&obj->uevent.event_list);
2955	obj->uevent.uobject.user_handle = cmd.user_handle;
2956
2957	wq = pd->device->ops.create_wq(pd, &wq_init_attr, &attrs->driver_udata);
2958	if (IS_ERR(wq)) {
2959		err = PTR_ERR(wq);
2960		goto err_put_cq;
2961	}
2962
2963	wq->uobject = obj;
2964	obj->uevent.uobject.object = wq;
2965	wq->wq_type = wq_init_attr.wq_type;
2966	wq->cq = cq;
2967	wq->pd = pd;
2968	wq->device = pd->device;
2969	atomic_set(&wq->usecnt, 0);
2970	atomic_inc(&pd->usecnt);
2971	atomic_inc(&cq->usecnt);
2972	obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
2973	if (obj->uevent.event_file)
2974		uverbs_uobject_get(&obj->uevent.event_file->uobj);
2975
2976	uobj_put_obj_read(pd);
2977	rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
2978				UVERBS_LOOKUP_READ);
2979	uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
2980
2981	resp.wq_handle = obj->uevent.uobject.id;
2982	resp.max_sge = wq_init_attr.max_sge;
2983	resp.max_wr = wq_init_attr.max_wr;
2984	resp.wqn = wq->wq_num;
2985	resp.response_length = uverbs_response_length(attrs, sizeof(resp));
2986	return uverbs_response(attrs, &resp, sizeof(resp));
2987
2988err_put_cq:
2989	rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
2990				UVERBS_LOOKUP_READ);
2991err_put_pd:
2992	uobj_put_obj_read(pd);
2993err_uobj:
2994	uobj_alloc_abort(&obj->uevent.uobject, attrs);
2995
2996	return err;
2997}
2998
2999static int ib_uverbs_ex_destroy_wq(struct uverbs_attr_bundle *attrs)
3000{
3001	struct ib_uverbs_ex_destroy_wq	cmd;
3002	struct ib_uverbs_ex_destroy_wq_resp	resp = {};
3003	struct ib_uobject		*uobj;
3004	struct ib_uwq_object		*obj;
3005	int				ret;
3006
3007	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3008	if (ret)
3009		return ret;
3010
3011	if (cmd.comp_mask)
3012		return -EOPNOTSUPP;
3013
3014	resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3015	uobj = uobj_get_destroy(UVERBS_OBJECT_WQ, cmd.wq_handle, attrs);
3016	if (IS_ERR(uobj))
3017		return PTR_ERR(uobj);
3018
3019	obj = container_of(uobj, struct ib_uwq_object, uevent.uobject);
3020	resp.events_reported = obj->uevent.events_reported;
3021
3022	uobj_put_destroy(uobj);
3023
3024	return uverbs_response(attrs, &resp, sizeof(resp));
3025}
3026
3027static int ib_uverbs_ex_modify_wq(struct uverbs_attr_bundle *attrs)
3028{
3029	struct ib_uverbs_ex_modify_wq cmd;
3030	struct ib_wq *wq;
3031	struct ib_wq_attr wq_attr = {};
3032	int ret;
3033
3034	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3035	if (ret)
3036		return ret;
3037
3038	if (!cmd.attr_mask)
3039		return -EINVAL;
3040
3041	if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS))
3042		return -EINVAL;
3043
3044	wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, cmd.wq_handle, attrs);
3045	if (IS_ERR(wq))
3046		return PTR_ERR(wq);
3047
3048	if (cmd.attr_mask & IB_WQ_FLAGS) {
3049		wq_attr.flags = cmd.flags;
3050		wq_attr.flags_mask = cmd.flags_mask;
3051	}
3052
3053	if (cmd.attr_mask & IB_WQ_CUR_STATE) {
3054		if (cmd.curr_wq_state > IB_WQS_ERR)
3055			return -EINVAL;
3056
3057		wq_attr.curr_wq_state = cmd.curr_wq_state;
3058	} else {
3059		wq_attr.curr_wq_state = wq->state;
3060	}
3061
3062	if (cmd.attr_mask & IB_WQ_STATE) {
3063		if (cmd.wq_state > IB_WQS_ERR)
3064			return -EINVAL;
3065
3066		wq_attr.wq_state = cmd.wq_state;
3067	} else {
3068		wq_attr.wq_state = wq_attr.curr_wq_state;
3069	}
3070
3071	ret = wq->device->ops.modify_wq(wq, &wq_attr, cmd.attr_mask,
3072					&attrs->driver_udata);
3073	rdma_lookup_put_uobject(&wq->uobject->uevent.uobject,
3074				UVERBS_LOOKUP_READ);
3075	return ret;
3076}
3077
3078static int ib_uverbs_ex_create_rwq_ind_table(struct uverbs_attr_bundle *attrs)
3079{
3080	struct ib_uverbs_ex_create_rwq_ind_table cmd;
3081	struct ib_uverbs_ex_create_rwq_ind_table_resp  resp = {};
3082	struct ib_uobject *uobj;
3083	int err;
3084	struct ib_rwq_ind_table_init_attr init_attr = {};
3085	struct ib_rwq_ind_table *rwq_ind_tbl;
3086	struct ib_wq **wqs = NULL;
3087	u32 *wqs_handles = NULL;
3088	struct ib_wq	*wq = NULL;
3089	int i, num_read_wqs;
3090	u32 num_wq_handles;
3091	struct uverbs_req_iter iter;
3092	struct ib_device *ib_dev;
3093
3094	err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
3095	if (err)
3096		return err;
3097
3098	if (cmd.comp_mask)
3099		return -EOPNOTSUPP;
3100
3101	if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE)
3102		return -EINVAL;
3103
3104	num_wq_handles = 1 << cmd.log_ind_tbl_size;
3105	wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles),
3106			      GFP_KERNEL);
3107	if (!wqs_handles)
3108		return -ENOMEM;
3109
3110	err = uverbs_request_next(&iter, wqs_handles,
3111				  num_wq_handles * sizeof(__u32));
3112	if (err)
3113		goto err_free;
3114
3115	err = uverbs_request_finish(&iter);
3116	if (err)
3117		goto err_free;
3118
3119	wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL);
3120	if (!wqs) {
3121		err = -ENOMEM;
3122		goto  err_free;
3123	}
3124
3125	for (num_read_wqs = 0; num_read_wqs < num_wq_handles;
3126			num_read_wqs++) {
3127		wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ,
3128				       wqs_handles[num_read_wqs], attrs);
3129		if (IS_ERR(wq)) {
3130			err = PTR_ERR(wq);
3131			goto put_wqs;
3132		}
3133
3134		wqs[num_read_wqs] = wq;
3135		atomic_inc(&wqs[num_read_wqs]->usecnt);
3136	}
3137
3138	uobj = uobj_alloc(UVERBS_OBJECT_RWQ_IND_TBL, attrs, &ib_dev);
3139	if (IS_ERR(uobj)) {
3140		err = PTR_ERR(uobj);
3141		goto put_wqs;
3142	}
3143
3144	rwq_ind_tbl = rdma_zalloc_drv_obj(ib_dev, ib_rwq_ind_table);
3145	if (!rwq_ind_tbl) {
3146		err = -ENOMEM;
3147		goto err_uobj;
3148	}
3149
3150	init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size;
3151	init_attr.ind_tbl = wqs;
3152
3153	rwq_ind_tbl->ind_tbl = wqs;
3154	rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size;
3155	rwq_ind_tbl->uobject = uobj;
3156	uobj->object = rwq_ind_tbl;
3157	rwq_ind_tbl->device = ib_dev;
3158	atomic_set(&rwq_ind_tbl->usecnt, 0);
3159
3160	err = ib_dev->ops.create_rwq_ind_table(rwq_ind_tbl, &init_attr,
3161					       &attrs->driver_udata);
3162	if (err)
3163		goto err_create;
3164
3165	for (i = 0; i < num_wq_handles; i++)
3166		rdma_lookup_put_uobject(&wqs[i]->uobject->uevent.uobject,
3167					UVERBS_LOOKUP_READ);
3168	kfree(wqs_handles);
3169	uobj_finalize_uobj_create(uobj, attrs);
3170
3171	resp.ind_tbl_handle = uobj->id;
3172	resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num;
3173	resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3174	return uverbs_response(attrs, &resp, sizeof(resp));
3175
3176err_create:
3177	kfree(rwq_ind_tbl);
3178err_uobj:
3179	uobj_alloc_abort(uobj, attrs);
3180put_wqs:
3181	for (i = 0; i < num_read_wqs; i++) {
3182		rdma_lookup_put_uobject(&wqs[i]->uobject->uevent.uobject,
3183					UVERBS_LOOKUP_READ);
3184		atomic_dec(&wqs[i]->usecnt);
3185	}
3186err_free:
3187	kfree(wqs_handles);
3188	kfree(wqs);
3189	return err;
3190}
3191
3192static int ib_uverbs_ex_destroy_rwq_ind_table(struct uverbs_attr_bundle *attrs)
3193{
3194	struct ib_uverbs_ex_destroy_rwq_ind_table cmd;
3195	int ret;
3196
3197	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3198	if (ret)
3199		return ret;
3200
3201	if (cmd.comp_mask)
3202		return -EOPNOTSUPP;
3203
3204	return uobj_perform_destroy(UVERBS_OBJECT_RWQ_IND_TBL,
3205				    cmd.ind_tbl_handle, attrs);
3206}
3207
3208static int ib_uverbs_ex_create_flow(struct uverbs_attr_bundle *attrs)
3209{
3210	struct ib_uverbs_create_flow	  cmd;
3211	struct ib_uverbs_create_flow_resp resp = {};
3212	struct ib_uobject		  *uobj;
3213	struct ib_flow			  *flow_id;
3214	struct ib_uverbs_flow_attr	  *kern_flow_attr;
3215	struct ib_flow_attr		  *flow_attr;
3216	struct ib_qp			  *qp;
3217	struct ib_uflow_resources	  *uflow_res;
3218	struct ib_uverbs_flow_spec_hdr	  *kern_spec;
3219	struct uverbs_req_iter iter;
3220	int err;
3221	void *ib_spec;
3222	int i;
3223	struct ib_device *ib_dev;
3224
3225	err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
3226	if (err)
3227		return err;
3228
3229	if (cmd.comp_mask)
3230		return -EINVAL;
3231
3232	if (!rdma_uattrs_has_raw_cap(attrs))
3233		return -EPERM;
3234
3235	if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED)
3236		return -EINVAL;
3237
3238	if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
3239	    ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) ||
3240	     (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT)))
3241		return -EINVAL;
3242
3243	if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS)
3244		return -EINVAL;
3245
3246	if (cmd.flow_attr.size >
3247	    (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec)))
3248		return -EINVAL;
3249
3250	if (cmd.flow_attr.reserved[0] ||
3251	    cmd.flow_attr.reserved[1])
3252		return -EINVAL;
3253
3254	if (cmd.flow_attr.num_of_specs) {
3255		kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size,
3256					 GFP_KERNEL);
3257		if (!kern_flow_attr)
3258			return -ENOMEM;
3259
3260		*kern_flow_attr = cmd.flow_attr;
3261		err = uverbs_request_next(&iter, &kern_flow_attr->flow_specs,
3262					  cmd.flow_attr.size);
3263		if (err)
3264			goto err_free_attr;
3265	} else {
3266		kern_flow_attr = &cmd.flow_attr;
3267	}
3268
3269	err = uverbs_request_finish(&iter);
3270	if (err)
3271		goto err_free_attr;
3272
3273	uobj = uobj_alloc(UVERBS_OBJECT_FLOW, attrs, &ib_dev);
3274	if (IS_ERR(uobj)) {
3275		err = PTR_ERR(uobj);
3276		goto err_free_attr;
3277	}
3278
3279	if (!rdma_is_port_valid(uobj->context->device, cmd.flow_attr.port)) {
3280		err = -EINVAL;
3281		goto err_uobj;
3282	}
3283
3284	qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
3285	if (IS_ERR(qp)) {
3286		err = PTR_ERR(qp);
3287		goto err_uobj;
3288	}
3289
3290	if (qp->qp_type != IB_QPT_UD && qp->qp_type != IB_QPT_RAW_PACKET) {
3291		err = -EINVAL;
3292		goto err_put;
3293	}
3294
3295	flow_attr = kzalloc(struct_size(flow_attr, flows,
3296				cmd.flow_attr.num_of_specs), GFP_KERNEL);
3297	if (!flow_attr) {
3298		err = -ENOMEM;
3299		goto err_put;
3300	}
3301	uflow_res = flow_resources_alloc(cmd.flow_attr.num_of_specs);
3302	if (!uflow_res) {
3303		err = -ENOMEM;
3304		goto err_free_flow_attr;
3305	}
3306
3307	flow_attr->type = kern_flow_attr->type;
3308	flow_attr->priority = kern_flow_attr->priority;
3309	flow_attr->num_of_specs = kern_flow_attr->num_of_specs;
3310	flow_attr->port = kern_flow_attr->port;
3311	flow_attr->flags = kern_flow_attr->flags;
3312	flow_attr->size = sizeof(*flow_attr);
3313
3314	kern_spec = kern_flow_attr->flow_specs;
3315	ib_spec = flow_attr + 1;
3316	for (i = 0; i < flow_attr->num_of_specs &&
3317			cmd.flow_attr.size >= sizeof(*kern_spec) &&
3318			cmd.flow_attr.size >= kern_spec->size;
3319	     i++) {
3320		err = kern_spec_to_ib_spec(
3321				attrs, (struct ib_uverbs_flow_spec *)kern_spec,
3322				ib_spec, uflow_res);
3323		if (err)
3324			goto err_free;
3325
3326		flow_attr->size +=
3327			((union ib_flow_spec *) ib_spec)->size;
3328		cmd.flow_attr.size -= kern_spec->size;
3329		kern_spec = ((void *)kern_spec) + kern_spec->size;
3330		ib_spec += ((union ib_flow_spec *) ib_spec)->size;
3331	}
3332	if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) {
3333		pr_warn("create flow failed, flow %d: %u bytes left from uverb cmd\n",
3334			i, cmd.flow_attr.size);
3335		err = -EINVAL;
3336		goto err_free;
3337	}
3338
3339	flow_id = qp->device->ops.create_flow(qp, flow_attr,
3340					      &attrs->driver_udata);
3341
3342	if (IS_ERR(flow_id)) {
3343		err = PTR_ERR(flow_id);
3344		goto err_free;
3345	}
3346
3347	ib_set_flow(uobj, flow_id, qp, qp->device, uflow_res);
3348
3349	rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
3350				UVERBS_LOOKUP_READ);
3351	kfree(flow_attr);
3352
3353	if (cmd.flow_attr.num_of_specs)
3354		kfree(kern_flow_attr);
3355	uobj_finalize_uobj_create(uobj, attrs);
3356
3357	resp.flow_handle = uobj->id;
3358	return uverbs_response(attrs, &resp, sizeof(resp));
3359
3360err_free:
3361	ib_uverbs_flow_resources_free(uflow_res);
3362err_free_flow_attr:
3363	kfree(flow_attr);
3364err_put:
3365	rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
3366				UVERBS_LOOKUP_READ);
3367err_uobj:
3368	uobj_alloc_abort(uobj, attrs);
3369err_free_attr:
3370	if (cmd.flow_attr.num_of_specs)
3371		kfree(kern_flow_attr);
3372	return err;
3373}
3374
3375static int ib_uverbs_ex_destroy_flow(struct uverbs_attr_bundle *attrs)
3376{
3377	struct ib_uverbs_destroy_flow	cmd;
3378	int				ret;
3379
3380	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3381	if (ret)
3382		return ret;
3383
3384	if (cmd.comp_mask)
3385		return -EINVAL;
3386
3387	return uobj_perform_destroy(UVERBS_OBJECT_FLOW, cmd.flow_handle, attrs);
3388}
3389
3390static int __uverbs_create_xsrq(struct uverbs_attr_bundle *attrs,
3391				struct ib_uverbs_create_xsrq *cmd,
3392				struct ib_udata *udata)
3393{
3394	struct ib_uverbs_create_srq_resp resp = {};
3395	struct ib_usrq_object           *obj;
3396	struct ib_pd                    *pd;
3397	struct ib_srq                   *srq;
3398	struct ib_srq_init_attr          attr;
3399	int ret;
3400	struct ib_uobject *xrcd_uobj;
3401	struct ib_device *ib_dev;
3402
3403	obj = (struct ib_usrq_object *)uobj_alloc(UVERBS_OBJECT_SRQ, attrs,
3404						  &ib_dev);
3405	if (IS_ERR(obj))
3406		return PTR_ERR(obj);
3407
3408	if (cmd->srq_type == IB_SRQT_TM)
3409		attr.ext.tag_matching.max_num_tags = cmd->max_num_tags;
3410
3411	if (cmd->srq_type == IB_SRQT_XRC) {
3412		xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->xrcd_handle,
3413					  attrs);
3414		if (IS_ERR(xrcd_uobj)) {
3415			ret = -EINVAL;
3416			goto err;
3417		}
3418
3419		attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object;
3420		if (!attr.ext.xrc.xrcd) {
3421			ret = -EINVAL;
3422			goto err_put_xrcd;
3423		}
3424
3425		obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
3426		atomic_inc(&obj->uxrcd->refcnt);
3427	}
3428
3429	if (ib_srq_has_cq(cmd->srq_type)) {
3430		attr.ext.cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ,
3431						cmd->cq_handle, attrs);
3432		if (IS_ERR(attr.ext.cq)) {
3433			ret = PTR_ERR(attr.ext.cq);
3434			goto err_put_xrcd;
3435		}
3436	}
3437
3438	pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, attrs);
3439	if (IS_ERR(pd)) {
3440		ret = PTR_ERR(pd);
3441		goto err_put_cq;
3442	}
3443
3444	attr.event_handler  = ib_uverbs_srq_event_handler;
3445	attr.srq_type       = cmd->srq_type;
3446	attr.attr.max_wr    = cmd->max_wr;
3447	attr.attr.max_sge   = cmd->max_sge;
3448	attr.attr.srq_limit = cmd->srq_limit;
3449
3450	INIT_LIST_HEAD(&obj->uevent.event_list);
3451	obj->uevent.uobject.user_handle = cmd->user_handle;
3452
3453	srq = ib_create_srq_user(pd, &attr, obj, udata);
3454	if (IS_ERR(srq)) {
3455		ret = PTR_ERR(srq);
3456		goto err_put_pd;
3457	}
3458
3459	obj->uevent.uobject.object = srq;
3460	obj->uevent.uobject.user_handle = cmd->user_handle;
3461	obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
3462	if (obj->uevent.event_file)
3463		uverbs_uobject_get(&obj->uevent.event_file->uobj);
3464
3465	if (cmd->srq_type == IB_SRQT_XRC)
3466		resp.srqn = srq->ext.xrc.srq_num;
3467
3468	if (cmd->srq_type == IB_SRQT_XRC)
3469		uobj_put_read(xrcd_uobj);
3470
3471	if (ib_srq_has_cq(cmd->srq_type))
3472		rdma_lookup_put_uobject(&attr.ext.cq->uobject->uevent.uobject,
3473					UVERBS_LOOKUP_READ);
3474
3475	uobj_put_obj_read(pd);
3476	uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
3477
3478	resp.srq_handle = obj->uevent.uobject.id;
3479	resp.max_wr = attr.attr.max_wr;
3480	resp.max_sge = attr.attr.max_sge;
3481	return uverbs_response(attrs, &resp, sizeof(resp));
3482
3483err_put_pd:
3484	uobj_put_obj_read(pd);
3485err_put_cq:
3486	if (ib_srq_has_cq(cmd->srq_type))
3487		rdma_lookup_put_uobject(&attr.ext.cq->uobject->uevent.uobject,
3488					UVERBS_LOOKUP_READ);
3489
3490err_put_xrcd:
3491	if (cmd->srq_type == IB_SRQT_XRC) {
3492		atomic_dec(&obj->uxrcd->refcnt);
3493		uobj_put_read(xrcd_uobj);
3494	}
3495
3496err:
3497	uobj_alloc_abort(&obj->uevent.uobject, attrs);
3498	return ret;
3499}
3500
3501static int ib_uverbs_create_srq(struct uverbs_attr_bundle *attrs)
3502{
3503	struct ib_uverbs_create_srq      cmd;
3504	struct ib_uverbs_create_xsrq     xcmd;
3505	int ret;
3506
3507	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3508	if (ret)
3509		return ret;
3510
3511	memset(&xcmd, 0, sizeof(xcmd));
3512	xcmd.response	 = cmd.response;
3513	xcmd.user_handle = cmd.user_handle;
3514	xcmd.srq_type	 = IB_SRQT_BASIC;
3515	xcmd.pd_handle	 = cmd.pd_handle;
3516	xcmd.max_wr	 = cmd.max_wr;
3517	xcmd.max_sge	 = cmd.max_sge;
3518	xcmd.srq_limit	 = cmd.srq_limit;
3519
3520	return __uverbs_create_xsrq(attrs, &xcmd, &attrs->driver_udata);
3521}
3522
3523static int ib_uverbs_create_xsrq(struct uverbs_attr_bundle *attrs)
3524{
3525	struct ib_uverbs_create_xsrq     cmd;
3526	int ret;
3527
3528	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3529	if (ret)
3530		return ret;
3531
3532	return __uverbs_create_xsrq(attrs, &cmd, &attrs->driver_udata);
3533}
3534
3535static int ib_uverbs_modify_srq(struct uverbs_attr_bundle *attrs)
3536{
3537	struct ib_uverbs_modify_srq cmd;
3538	struct ib_srq              *srq;
3539	struct ib_srq_attr          attr;
3540	int                         ret;
3541
3542	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3543	if (ret)
3544		return ret;
3545
3546	srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3547	if (IS_ERR(srq))
3548		return PTR_ERR(srq);
3549
3550	attr.max_wr    = cmd.max_wr;
3551	attr.srq_limit = cmd.srq_limit;
3552
3553	ret = srq->device->ops.modify_srq(srq, &attr, cmd.attr_mask,
3554					  &attrs->driver_udata);
3555
3556	rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
3557				UVERBS_LOOKUP_READ);
3558
3559	return ret;
3560}
3561
3562static int ib_uverbs_query_srq(struct uverbs_attr_bundle *attrs)
3563{
3564	struct ib_uverbs_query_srq      cmd;
3565	struct ib_uverbs_query_srq_resp resp;
3566	struct ib_srq_attr              attr;
3567	struct ib_srq                   *srq;
3568	int                             ret;
3569
3570	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3571	if (ret)
3572		return ret;
3573
3574	srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3575	if (IS_ERR(srq))
3576		return PTR_ERR(srq);
3577
3578	ret = ib_query_srq(srq, &attr);
3579
3580	rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
3581				UVERBS_LOOKUP_READ);
3582
3583	if (ret)
3584		return ret;
3585
3586	memset(&resp, 0, sizeof resp);
3587
3588	resp.max_wr    = attr.max_wr;
3589	resp.max_sge   = attr.max_sge;
3590	resp.srq_limit = attr.srq_limit;
3591
3592	return uverbs_response(attrs, &resp, sizeof(resp));
3593}
3594
3595static int ib_uverbs_destroy_srq(struct uverbs_attr_bundle *attrs)
3596{
3597	struct ib_uverbs_destroy_srq      cmd;
3598	struct ib_uverbs_destroy_srq_resp resp;
3599	struct ib_uobject		 *uobj;
3600	struct ib_uevent_object        	 *obj;
3601	int ret;
3602
3603	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3604	if (ret)
3605		return ret;
3606
3607	uobj = uobj_get_destroy(UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3608	if (IS_ERR(uobj))
3609		return PTR_ERR(uobj);
3610
3611	obj = container_of(uobj, struct ib_uevent_object, uobject);
3612	memset(&resp, 0, sizeof(resp));
3613	resp.events_reported = obj->events_reported;
3614
3615	uobj_put_destroy(uobj);
3616
3617	return uverbs_response(attrs, &resp, sizeof(resp));
3618}
3619
3620static int ib_uverbs_ex_query_device(struct uverbs_attr_bundle *attrs)
3621{
3622	struct ib_uverbs_ex_query_device_resp resp = {};
3623	struct ib_uverbs_ex_query_device  cmd;
3624	struct ib_device_attr attr = {0};
3625	struct ib_ucontext *ucontext;
3626	struct ib_device *ib_dev;
3627	int err;
3628
3629	ucontext = ib_uverbs_get_ucontext(attrs);
3630	if (IS_ERR(ucontext))
3631		return PTR_ERR(ucontext);
3632	ib_dev = ucontext->device;
3633
3634	err = uverbs_request(attrs, &cmd, sizeof(cmd));
3635	if (err)
3636		return err;
3637
3638	if (cmd.comp_mask)
3639		return -EINVAL;
3640
3641	if (cmd.reserved)
3642		return -EINVAL;
3643
3644	err = ib_dev->ops.query_device(ib_dev, &attr, &attrs->driver_udata);
3645	if (err)
3646		return err;
3647
3648	copy_query_dev_fields(ucontext, &resp.base, &attr);
3649
3650	resp.odp_caps.general_caps = attr.odp_caps.general_caps;
3651	resp.odp_caps.per_transport_caps.rc_odp_caps =
3652		attr.odp_caps.per_transport_caps.rc_odp_caps;
3653	resp.odp_caps.per_transport_caps.uc_odp_caps =
3654		attr.odp_caps.per_transport_caps.uc_odp_caps;
3655	resp.odp_caps.per_transport_caps.ud_odp_caps =
3656		attr.odp_caps.per_transport_caps.ud_odp_caps;
3657	resp.xrc_odp_caps = attr.odp_caps.per_transport_caps.xrc_odp_caps;
3658
3659	resp.timestamp_mask = attr.timestamp_mask;
3660	resp.hca_core_clock = attr.hca_core_clock;
3661	resp.device_cap_flags_ex = attr.device_cap_flags;
3662	resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts;
3663	resp.rss_caps.max_rwq_indirection_tables =
3664		attr.rss_caps.max_rwq_indirection_tables;
3665	resp.rss_caps.max_rwq_indirection_table_size =
3666		attr.rss_caps.max_rwq_indirection_table_size;
3667	resp.max_wq_type_rq = attr.max_wq_type_rq;
3668	resp.raw_packet_caps = attr.raw_packet_caps;
3669	resp.tm_caps.max_rndv_hdr_size	= attr.tm_caps.max_rndv_hdr_size;
3670	resp.tm_caps.max_num_tags	= attr.tm_caps.max_num_tags;
3671	resp.tm_caps.max_ops		= attr.tm_caps.max_ops;
3672	resp.tm_caps.max_sge		= attr.tm_caps.max_sge;
3673	resp.tm_caps.flags		= attr.tm_caps.flags;
3674	resp.cq_moderation_caps.max_cq_moderation_count  =
3675		attr.cq_caps.max_cq_moderation_count;
3676	resp.cq_moderation_caps.max_cq_moderation_period =
3677		attr.cq_caps.max_cq_moderation_period;
3678	resp.max_dm_size = attr.max_dm_size;
3679	resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3680
3681	return uverbs_response(attrs, &resp, sizeof(resp));
3682}
3683
3684static int ib_uverbs_ex_modify_cq(struct uverbs_attr_bundle *attrs)
3685{
3686	struct ib_uverbs_ex_modify_cq cmd;
3687	struct ib_cq *cq;
3688	int ret;
3689
3690	ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3691	if (ret)
3692		return ret;
3693
3694	if (!cmd.attr_mask || cmd.reserved)
3695		return -EINVAL;
3696
3697	if (cmd.attr_mask > IB_CQ_MODERATE)
3698		return -EOPNOTSUPP;
3699
3700	cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
3701	if (IS_ERR(cq))
3702		return PTR_ERR(cq);
3703
3704	ret = rdma_set_cq_moderation(cq, cmd.attr.cq_count, cmd.attr.cq_period);
3705
3706	rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
3707				UVERBS_LOOKUP_READ);
3708	return ret;
3709}
3710
3711/*
3712 * Describe the input structs for write(). Some write methods have an input
3713 * only struct, most have an input and output. If the struct has an output then
3714 * the 'response' u64 must be the first field in the request structure.
3715 *
3716 * If udata is present then both the request and response structs have a
3717 * trailing driver_data flex array. In this case the size of the base struct
3718 * cannot be changed.
3719 */
3720#define UAPI_DEF_WRITE_IO(req, resp)                                           \
3721	.write.has_resp = 1 +                                                  \
3722			  BUILD_BUG_ON_ZERO(offsetof(req, response) != 0) +    \
3723			  BUILD_BUG_ON_ZERO(sizeof_field(req, response) !=    \
3724					    sizeof(u64)),                      \
3725	.write.req_size = sizeof(req), .write.resp_size = sizeof(resp)
3726
3727#define UAPI_DEF_WRITE_I(req) .write.req_size = sizeof(req)
3728
3729#define UAPI_DEF_WRITE_UDATA_IO(req, resp)                                     \
3730	UAPI_DEF_WRITE_IO(req, resp),                                          \
3731		.write.has_udata =                                             \
3732			1 +                                                    \
3733			BUILD_BUG_ON_ZERO(offsetof(req, driver_data) !=        \
3734					  sizeof(req)) +                       \
3735			BUILD_BUG_ON_ZERO(offsetof(resp, driver_data) !=       \
3736					  sizeof(resp))
3737
3738#define UAPI_DEF_WRITE_UDATA_I(req)                                            \
3739	UAPI_DEF_WRITE_I(req),                                                 \
3740		.write.has_udata =                                             \
3741			1 + BUILD_BUG_ON_ZERO(offsetof(req, driver_data) !=    \
3742					      sizeof(req))
3743
3744/*
3745 * The _EX versions are for use with WRITE_EX and allow the last struct member
3746 * to be specified. Buffers that do not include that member will be rejected.
3747 */
3748#define UAPI_DEF_WRITE_IO_EX(req, req_last_member, resp, resp_last_member)     \
3749	.write.has_resp = 1,                                                   \
3750	.write.req_size = offsetofend(req, req_last_member),                   \
3751	.write.resp_size = offsetofend(resp, resp_last_member)
3752
3753#define UAPI_DEF_WRITE_I_EX(req, req_last_member)                              \
3754	.write.req_size = offsetofend(req, req_last_member)
3755
3756const struct uapi_definition uverbs_def_write_intf[] = {
3757	DECLARE_UVERBS_OBJECT(
3758		UVERBS_OBJECT_AH,
3759		DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_AH,
3760				     ib_uverbs_create_ah,
3761				     UAPI_DEF_WRITE_UDATA_IO(
3762					     struct ib_uverbs_create_ah,
3763					     struct ib_uverbs_create_ah_resp)),
3764		DECLARE_UVERBS_WRITE(
3765			IB_USER_VERBS_CMD_DESTROY_AH,
3766			ib_uverbs_destroy_ah,
3767			UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_ah)),
3768		UAPI_DEF_OBJ_NEEDS_FN(create_user_ah),
3769		UAPI_DEF_OBJ_NEEDS_FN(destroy_ah)),
3770
3771	DECLARE_UVERBS_OBJECT(
3772		UVERBS_OBJECT_COMP_CHANNEL,
3773		DECLARE_UVERBS_WRITE(
3774			IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL,
3775			ib_uverbs_create_comp_channel,
3776			UAPI_DEF_WRITE_IO(
3777				struct ib_uverbs_create_comp_channel,
3778				struct ib_uverbs_create_comp_channel_resp))),
3779
3780	DECLARE_UVERBS_OBJECT(
3781		UVERBS_OBJECT_CQ,
3782		DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_CQ,
3783				     ib_uverbs_create_cq,
3784				     UAPI_DEF_WRITE_UDATA_IO(
3785					     struct ib_uverbs_create_cq,
3786					     struct ib_uverbs_create_cq_resp),
3787				     UAPI_DEF_METHOD_NEEDS_FN(create_cq)),
3788		DECLARE_UVERBS_WRITE(
3789			IB_USER_VERBS_CMD_DESTROY_CQ,
3790			ib_uverbs_destroy_cq,
3791			UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_cq,
3792					  struct ib_uverbs_destroy_cq_resp),
3793			UAPI_DEF_METHOD_NEEDS_FN(destroy_cq)),
3794		DECLARE_UVERBS_WRITE(
3795			IB_USER_VERBS_CMD_POLL_CQ,
3796			ib_uverbs_poll_cq,
3797			UAPI_DEF_WRITE_IO(struct ib_uverbs_poll_cq,
3798					  struct ib_uverbs_poll_cq_resp),
3799			UAPI_DEF_METHOD_NEEDS_FN(poll_cq)),
3800		DECLARE_UVERBS_WRITE(
3801			IB_USER_VERBS_CMD_REQ_NOTIFY_CQ,
3802			ib_uverbs_req_notify_cq,
3803			UAPI_DEF_WRITE_I(struct ib_uverbs_req_notify_cq),
3804			UAPI_DEF_METHOD_NEEDS_FN(req_notify_cq)),
3805		DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_RESIZE_CQ,
3806				     ib_uverbs_resize_cq,
3807				     UAPI_DEF_WRITE_UDATA_IO(
3808					     struct ib_uverbs_resize_cq,
3809					     struct ib_uverbs_resize_cq_resp),
3810				     UAPI_DEF_METHOD_NEEDS_FN(resize_cq)),
3811		DECLARE_UVERBS_WRITE_EX(
3812			IB_USER_VERBS_EX_CMD_CREATE_CQ,
3813			ib_uverbs_ex_create_cq,
3814			UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_cq,
3815					     reserved,
3816					     struct ib_uverbs_ex_create_cq_resp,
3817					     response_length),
3818			UAPI_DEF_METHOD_NEEDS_FN(create_cq)),
3819		DECLARE_UVERBS_WRITE_EX(
3820			IB_USER_VERBS_EX_CMD_MODIFY_CQ,
3821			ib_uverbs_ex_modify_cq,
3822			UAPI_DEF_WRITE_I(struct ib_uverbs_ex_modify_cq),
3823			UAPI_DEF_METHOD_NEEDS_FN(modify_cq))),
3824
3825	DECLARE_UVERBS_OBJECT(
3826		UVERBS_OBJECT_DEVICE,
3827		DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_GET_CONTEXT,
3828				     ib_uverbs_get_context,
3829				     UAPI_DEF_WRITE_UDATA_IO(
3830					     struct ib_uverbs_get_context,
3831					     struct ib_uverbs_get_context_resp)),
3832		DECLARE_UVERBS_WRITE(
3833			IB_USER_VERBS_CMD_QUERY_DEVICE,
3834			ib_uverbs_query_device,
3835			UAPI_DEF_WRITE_IO(struct ib_uverbs_query_device,
3836					  struct ib_uverbs_query_device_resp)),
3837		DECLARE_UVERBS_WRITE(
3838			IB_USER_VERBS_CMD_QUERY_PORT,
3839			ib_uverbs_query_port,
3840			UAPI_DEF_WRITE_IO(struct ib_uverbs_query_port,
3841					  struct ib_uverbs_query_port_resp),
3842			UAPI_DEF_METHOD_NEEDS_FN(query_port)),
3843		DECLARE_UVERBS_WRITE_EX(
3844			IB_USER_VERBS_EX_CMD_QUERY_DEVICE,
3845			ib_uverbs_ex_query_device,
3846			UAPI_DEF_WRITE_IO_EX(
3847				struct ib_uverbs_ex_query_device,
3848				reserved,
3849				struct ib_uverbs_ex_query_device_resp,
3850				response_length),
3851			UAPI_DEF_METHOD_NEEDS_FN(query_device)),
3852		UAPI_DEF_OBJ_NEEDS_FN(alloc_ucontext),
3853		UAPI_DEF_OBJ_NEEDS_FN(dealloc_ucontext)),
3854
3855	DECLARE_UVERBS_OBJECT(
3856		UVERBS_OBJECT_FLOW,
3857		DECLARE_UVERBS_WRITE_EX(
3858			IB_USER_VERBS_EX_CMD_CREATE_FLOW,
3859			ib_uverbs_ex_create_flow,
3860			UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_create_flow,
3861					     flow_attr,
3862					     struct ib_uverbs_create_flow_resp,
3863					     flow_handle),
3864			UAPI_DEF_METHOD_NEEDS_FN(create_flow)),
3865		DECLARE_UVERBS_WRITE_EX(
3866			IB_USER_VERBS_EX_CMD_DESTROY_FLOW,
3867			ib_uverbs_ex_destroy_flow,
3868			UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_flow),
3869			UAPI_DEF_METHOD_NEEDS_FN(destroy_flow))),
3870
3871	DECLARE_UVERBS_OBJECT(
3872		UVERBS_OBJECT_MR,
3873		DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_DEREG_MR,
3874				     ib_uverbs_dereg_mr,
3875				     UAPI_DEF_WRITE_I(struct ib_uverbs_dereg_mr),
3876				     UAPI_DEF_METHOD_NEEDS_FN(dereg_mr)),
3877		DECLARE_UVERBS_WRITE(
3878			IB_USER_VERBS_CMD_REG_MR,
3879			ib_uverbs_reg_mr,
3880			UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_reg_mr,
3881						struct ib_uverbs_reg_mr_resp),
3882			UAPI_DEF_METHOD_NEEDS_FN(reg_user_mr)),
3883		DECLARE_UVERBS_WRITE(
3884			IB_USER_VERBS_CMD_REREG_MR,
3885			ib_uverbs_rereg_mr,
3886			UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_rereg_mr,
3887						struct ib_uverbs_rereg_mr_resp),
3888			UAPI_DEF_METHOD_NEEDS_FN(rereg_user_mr))),
3889
3890	DECLARE_UVERBS_OBJECT(
3891		UVERBS_OBJECT_MW,
3892		DECLARE_UVERBS_WRITE(
3893			IB_USER_VERBS_CMD_ALLOC_MW,
3894			ib_uverbs_alloc_mw,
3895			UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_mw,
3896						struct ib_uverbs_alloc_mw_resp),
3897			UAPI_DEF_METHOD_NEEDS_FN(alloc_mw)),
3898		DECLARE_UVERBS_WRITE(
3899			IB_USER_VERBS_CMD_DEALLOC_MW,
3900			ib_uverbs_dealloc_mw,
3901			UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_mw),
3902			UAPI_DEF_METHOD_NEEDS_FN(dealloc_mw))),
3903
3904	DECLARE_UVERBS_OBJECT(
3905		UVERBS_OBJECT_PD,
3906		DECLARE_UVERBS_WRITE(
3907			IB_USER_VERBS_CMD_ALLOC_PD,
3908			ib_uverbs_alloc_pd,
3909			UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_pd,
3910						struct ib_uverbs_alloc_pd_resp),
3911			UAPI_DEF_METHOD_NEEDS_FN(alloc_pd)),
3912		DECLARE_UVERBS_WRITE(
3913			IB_USER_VERBS_CMD_DEALLOC_PD,
3914			ib_uverbs_dealloc_pd,
3915			UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_pd),
3916			UAPI_DEF_METHOD_NEEDS_FN(dealloc_pd))),
3917
3918	DECLARE_UVERBS_OBJECT(
3919		UVERBS_OBJECT_QP,
3920		DECLARE_UVERBS_WRITE(
3921			IB_USER_VERBS_CMD_ATTACH_MCAST,
3922			ib_uverbs_attach_mcast,
3923			UAPI_DEF_WRITE_I(struct ib_uverbs_attach_mcast),
3924			UAPI_DEF_METHOD_NEEDS_FN(attach_mcast),
3925			UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)),
3926		DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_QP,
3927				     ib_uverbs_create_qp,
3928				     UAPI_DEF_WRITE_UDATA_IO(
3929					     struct ib_uverbs_create_qp,
3930					     struct ib_uverbs_create_qp_resp),
3931				     UAPI_DEF_METHOD_NEEDS_FN(create_qp)),
3932		DECLARE_UVERBS_WRITE(
3933			IB_USER_VERBS_CMD_DESTROY_QP,
3934			ib_uverbs_destroy_qp,
3935			UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_qp,
3936					  struct ib_uverbs_destroy_qp_resp),
3937			UAPI_DEF_METHOD_NEEDS_FN(destroy_qp)),
3938		DECLARE_UVERBS_WRITE(
3939			IB_USER_VERBS_CMD_DETACH_MCAST,
3940			ib_uverbs_detach_mcast,
3941			UAPI_DEF_WRITE_I(struct ib_uverbs_detach_mcast),
3942			UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)),
3943		DECLARE_UVERBS_WRITE(
3944			IB_USER_VERBS_CMD_MODIFY_QP,
3945			ib_uverbs_modify_qp,
3946			UAPI_DEF_WRITE_I(struct ib_uverbs_modify_qp),
3947			UAPI_DEF_METHOD_NEEDS_FN(modify_qp)),
3948		DECLARE_UVERBS_WRITE(
3949			IB_USER_VERBS_CMD_POST_RECV,
3950			ib_uverbs_post_recv,
3951			UAPI_DEF_WRITE_IO(struct ib_uverbs_post_recv,
3952					  struct ib_uverbs_post_recv_resp),
3953			UAPI_DEF_METHOD_NEEDS_FN(post_recv)),
3954		DECLARE_UVERBS_WRITE(
3955			IB_USER_VERBS_CMD_POST_SEND,
3956			ib_uverbs_post_send,
3957			UAPI_DEF_WRITE_IO(struct ib_uverbs_post_send,
3958					  struct ib_uverbs_post_send_resp),
3959			UAPI_DEF_METHOD_NEEDS_FN(post_send)),
3960		DECLARE_UVERBS_WRITE(
3961			IB_USER_VERBS_CMD_QUERY_QP,
3962			ib_uverbs_query_qp,
3963			UAPI_DEF_WRITE_IO(struct ib_uverbs_query_qp,
3964					  struct ib_uverbs_query_qp_resp),
3965			UAPI_DEF_METHOD_NEEDS_FN(query_qp)),
3966		DECLARE_UVERBS_WRITE_EX(
3967			IB_USER_VERBS_EX_CMD_CREATE_QP,
3968			ib_uverbs_ex_create_qp,
3969			UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_qp,
3970					     comp_mask,
3971					     struct ib_uverbs_ex_create_qp_resp,
3972					     response_length),
3973			UAPI_DEF_METHOD_NEEDS_FN(create_qp)),
3974		DECLARE_UVERBS_WRITE_EX(
3975			IB_USER_VERBS_EX_CMD_MODIFY_QP,
3976			ib_uverbs_ex_modify_qp,
3977			UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_modify_qp,
3978					     base,
3979					     struct ib_uverbs_ex_modify_qp_resp,
3980					     response_length),
3981			UAPI_DEF_METHOD_NEEDS_FN(modify_qp))),
3982
3983	DECLARE_UVERBS_OBJECT(
3984		UVERBS_OBJECT_RWQ_IND_TBL,
3985		DECLARE_UVERBS_WRITE_EX(
3986			IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL,
3987			ib_uverbs_ex_create_rwq_ind_table,
3988			UAPI_DEF_WRITE_IO_EX(
3989				struct ib_uverbs_ex_create_rwq_ind_table,
3990				log_ind_tbl_size,
3991				struct ib_uverbs_ex_create_rwq_ind_table_resp,
3992				ind_tbl_num),
3993			UAPI_DEF_METHOD_NEEDS_FN(create_rwq_ind_table)),
3994		DECLARE_UVERBS_WRITE_EX(
3995			IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL,
3996			ib_uverbs_ex_destroy_rwq_ind_table,
3997			UAPI_DEF_WRITE_I(
3998				struct ib_uverbs_ex_destroy_rwq_ind_table),
3999			UAPI_DEF_METHOD_NEEDS_FN(destroy_rwq_ind_table))),
4000
4001	DECLARE_UVERBS_OBJECT(
4002		UVERBS_OBJECT_WQ,
4003		DECLARE_UVERBS_WRITE_EX(
4004			IB_USER_VERBS_EX_CMD_CREATE_WQ,
4005			ib_uverbs_ex_create_wq,
4006			UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_wq,
4007					     max_sge,
4008					     struct ib_uverbs_ex_create_wq_resp,
4009					     wqn),
4010			UAPI_DEF_METHOD_NEEDS_FN(create_wq)),
4011		DECLARE_UVERBS_WRITE_EX(
4012			IB_USER_VERBS_EX_CMD_DESTROY_WQ,
4013			ib_uverbs_ex_destroy_wq,
4014			UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_destroy_wq,
4015					     wq_handle,
4016					     struct ib_uverbs_ex_destroy_wq_resp,
4017					     reserved),
4018			UAPI_DEF_METHOD_NEEDS_FN(destroy_wq)),
4019		DECLARE_UVERBS_WRITE_EX(
4020			IB_USER_VERBS_EX_CMD_MODIFY_WQ,
4021			ib_uverbs_ex_modify_wq,
4022			UAPI_DEF_WRITE_I_EX(struct ib_uverbs_ex_modify_wq,
4023					    curr_wq_state),
4024			UAPI_DEF_METHOD_NEEDS_FN(modify_wq))),
4025
4026	DECLARE_UVERBS_OBJECT(
4027		UVERBS_OBJECT_SRQ,
4028		DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_SRQ,
4029				     ib_uverbs_create_srq,
4030				     UAPI_DEF_WRITE_UDATA_IO(
4031					     struct ib_uverbs_create_srq,
4032					     struct ib_uverbs_create_srq_resp),
4033				     UAPI_DEF_METHOD_NEEDS_FN(create_srq)),
4034		DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_XSRQ,
4035				     ib_uverbs_create_xsrq,
4036				     UAPI_DEF_WRITE_UDATA_IO(
4037					     struct ib_uverbs_create_xsrq,
4038					     struct ib_uverbs_create_srq_resp),
4039				     UAPI_DEF_METHOD_NEEDS_FN(create_srq)),
4040		DECLARE_UVERBS_WRITE(
4041			IB_USER_VERBS_CMD_DESTROY_SRQ,
4042			ib_uverbs_destroy_srq,
4043			UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_srq,
4044					  struct ib_uverbs_destroy_srq_resp),
4045			UAPI_DEF_METHOD_NEEDS_FN(destroy_srq)),
4046		DECLARE_UVERBS_WRITE(
4047			IB_USER_VERBS_CMD_MODIFY_SRQ,
4048			ib_uverbs_modify_srq,
4049			UAPI_DEF_WRITE_UDATA_I(struct ib_uverbs_modify_srq),
4050			UAPI_DEF_METHOD_NEEDS_FN(modify_srq)),
4051		DECLARE_UVERBS_WRITE(
4052			IB_USER_VERBS_CMD_POST_SRQ_RECV,
4053			ib_uverbs_post_srq_recv,
4054			UAPI_DEF_WRITE_IO(struct ib_uverbs_post_srq_recv,
4055					  struct ib_uverbs_post_srq_recv_resp),
4056			UAPI_DEF_METHOD_NEEDS_FN(post_srq_recv)),
4057		DECLARE_UVERBS_WRITE(
4058			IB_USER_VERBS_CMD_QUERY_SRQ,
4059			ib_uverbs_query_srq,
4060			UAPI_DEF_WRITE_IO(struct ib_uverbs_query_srq,
4061					  struct ib_uverbs_query_srq_resp),
4062			UAPI_DEF_METHOD_NEEDS_FN(query_srq))),
4063
4064	DECLARE_UVERBS_OBJECT(
4065		UVERBS_OBJECT_XRCD,
4066		DECLARE_UVERBS_WRITE(
4067			IB_USER_VERBS_CMD_CLOSE_XRCD,
4068			ib_uverbs_close_xrcd,
4069			UAPI_DEF_WRITE_I(struct ib_uverbs_close_xrcd)),
4070		DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_QP,
4071				     ib_uverbs_open_qp,
4072				     UAPI_DEF_WRITE_UDATA_IO(
4073					     struct ib_uverbs_open_qp,
4074					     struct ib_uverbs_create_qp_resp)),
4075		DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_XRCD,
4076				     ib_uverbs_open_xrcd,
4077				     UAPI_DEF_WRITE_UDATA_IO(
4078					     struct ib_uverbs_open_xrcd,
4079					     struct ib_uverbs_open_xrcd_resp)),
4080		UAPI_DEF_OBJ_NEEDS_FN(alloc_xrcd),
4081		UAPI_DEF_OBJ_NEEDS_FN(dealloc_xrcd)),
4082
4083	{},
4084};