drivers/infiniband/core/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_core.h"
  46
  47 #include "uverbs.h"
  48 #include "core_priv.h"
  49
  50 /*
  51  * Copy a response to userspace. If the provided 'resp' is larger than the
  52  * user buffer it is silently truncated. If the user provided a larger buffer
  53  * then the trailing portion is zero filled.
  54  *
  55  * These semantics are intended to support future extension of the output
  56  * structures.
  57  */
  58 static int uverbs_response(struct uverbs_attr_bundle *attrs, const void *resp,
  59                            size_t resp_len)
  60 {
  61         int ret;
  62
  63         if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT))
  64                 return uverbs_copy_to_struct_or_zero(
  65                         attrs, UVERBS_ATTR_CORE_OUT, resp, resp_len);
  66
  67         if (copy_to_user(attrs->ucore.outbuf, resp,
  68                          min(attrs->ucore.outlen, resp_len)))
  69                 return -EFAULT;
  70
  71         if (resp_len < attrs->ucore.outlen) {
  72                 /*
  73                  * Zero fill any extra memory that user
  74                  * space might have provided.
  75                  */
  76                 ret = clear_user(attrs->ucore.outbuf + resp_len,
  77                                  attrs->ucore.outlen - resp_len);
  78                 if (ret)
  79                         return -EFAULT;
  80         }
  81
  82         return 0;
  83 }
  84
  85 /*
  86  * Copy a request from userspace. If the provided 'req' is larger than the
  87  * user buffer then the user buffer is zero extended into the 'req'. If 'req'
  88  * is smaller than the user buffer then the uncopied bytes in the user buffer
  89  * must be zero.
  90  */
  91 static int uverbs_request(struct uverbs_attr_bundle *attrs, void *req,
  92                           size_t req_len)
  93 {
  94         if (copy_from_user(req, attrs->ucore.inbuf,
  95                            min(attrs->ucore.inlen, req_len)))
  96                 return -EFAULT;
  97
  98         if (attrs->ucore.inlen < req_len) {
  99                 memset(req + attrs->ucore.inlen, 0,
 100                        req_len - attrs->ucore.inlen);
 101         } else if (attrs->ucore.inlen > req_len) {
 102                 if (!ib_is_buffer_cleared(attrs->ucore.inbuf + req_len,
 103                                           attrs->ucore.inlen - req_len))
 104                         return -EOPNOTSUPP;
 105         }
 106         return 0;
 107 }
 108
 109 /*
 110  * Generate the value for the 'response_length' protocol used by write_ex.
 111  * This is the number of bytes the kernel actually wrote. Userspace can use
 112  * this to detect what structure members in the response the kernel
 113  * understood.
 114  */
 115 static u32 uverbs_response_length(struct uverbs_attr_bundle *attrs,
 116                                   size_t resp_len)
 117 {
 118         return min_t(size_t, attrs->ucore.outlen, resp_len);
 119 }
 120
 121 /*
 122  * The iterator version of the request interface is for handlers that need to
 123  * step over a flex array at the end of a command header.
 124  */
 125 struct uverbs_req_iter {
 126         const void __user *cur;
 127         const void __user *end;
 128 };
 129
 130 static int uverbs_request_start(struct uverbs_attr_bundle *attrs,
 131                                 struct uverbs_req_iter *iter,
 132                                 void *req,
 133                                 size_t req_len)
 134 {
 135         if (attrs->ucore.inlen < req_len)
 136                 return -ENOSPC;
 137
 138         if (copy_from_user(req, attrs->ucore.inbuf, req_len))
 139                 return -EFAULT;
 140
 141         iter->cur = attrs->ucore.inbuf + req_len;
 142         iter->end = attrs->ucore.inbuf + attrs->ucore.inlen;
 143         return 0;
 144 }
 145
 146 static int uverbs_request_next(struct uverbs_req_iter *iter, void *val,
 147                                size_t len)
 148 {
 149         if (iter->cur + len > iter->end)
 150                 return -ENOSPC;
 151
 152         if (copy_from_user(val, iter->cur, len))
 153                 return -EFAULT;
 154
 155         iter->cur += len;
 156         return 0;
 157 }
 158
 159 static const void __user *uverbs_request_next_ptr(struct uverbs_req_iter *iter,
 160                                                   size_t len)
 161 {
 162         const void __user *res = iter->cur;
 163
 164         if (iter->cur + len > iter->end)
 165                 return (void __force __user *)ERR_PTR(-ENOSPC);
 166         iter->cur += len;
 167         return res;
 168 }
 169
 170 static int uverbs_request_finish(struct uverbs_req_iter *iter)
 171 {
 172         if (!ib_is_buffer_cleared(iter->cur, iter->end - iter->cur))
 173                 return -EOPNOTSUPP;
 174         return 0;
 175 }
 176
 177 /*
 178  * When calling a destroy function during an error unwind we need to pass in
 179  * the udata that is sanitized of all user arguments. Ie from the driver
 180  * perspective it looks like no udata was passed.
 181  */
 182 struct ib_udata *uverbs_get_cleared_udata(struct uverbs_attr_bundle *attrs)
 183 {
 184         attrs->driver_udata = (struct ib_udata){};
 185         return &attrs->driver_udata;
 186 }
 187
 188 static struct ib_uverbs_completion_event_file *
 189 _ib_uverbs_lookup_comp_file(s32 fd, struct uverbs_attr_bundle *attrs)
 190 {
 191         struct ib_uobject *uobj = ufd_get_read(UVERBS_OBJECT_COMP_CHANNEL,
 192                                                fd, attrs);
 193
 194         if (IS_ERR(uobj))
 195                 return (void *)uobj;
 196
 197         uverbs_uobject_get(uobj);
 198         uobj_put_read(uobj);
 199
 200         return container_of(uobj, struct ib_uverbs_completion_event_file,
 201                             uobj);
 202 }
 203 #define ib_uverbs_lookup_comp_file(_fd, _ufile)                                \
 204         _ib_uverbs_lookup_comp_file((_fd)*typecheck(s32, _fd), _ufile)
 205
 206 static int ib_uverbs_get_context(struct uverbs_attr_bundle *attrs)
 207 {
 208         struct ib_uverbs_file *file = attrs->ufile;
 209         struct ib_uverbs_get_context      cmd;
 210         struct ib_uverbs_get_context_resp resp;
 211         struct ib_ucontext               *ucontext;
 212         struct file                      *filp;
 213         struct ib_rdmacg_object          cg_obj;
 214         struct ib_device *ib_dev;
 215         int ret;
 216
 217         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 218         if (ret)
 219                 return ret;
 220
 221         mutex_lock(&file->ucontext_lock);
 222         ib_dev = srcu_dereference(file->device->ib_dev,
 223                                   &file->device->disassociate_srcu);
 224         if (!ib_dev) {
 225                 ret = -EIO;
 226                 goto err;
 227         }
 228
 229         if (file->ucontext) {
 230                 ret = -EINVAL;
 231                 goto err;
 232         }
 233
 234         ret = ib_rdmacg_try_charge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE);
 235         if (ret)
 236                 goto err;
 237
 238         ucontext = rdma_zalloc_drv_obj(ib_dev, ib_ucontext);
 239         if (!ucontext) {
 240                 ret = -ENOMEM;
 241                 goto err_alloc;
 242         }
 243
 244         attrs->context = ucontext;
 245
 246         ucontext->res.type = RDMA_RESTRACK_CTX;
 247         ucontext->device = ib_dev;
 248         ucontext->cg_obj = cg_obj;
 249         /* ufile is required when some objects are released */
 250         ucontext->ufile = file;
 251
 252         ucontext->closing = false;
 253         ucontext->cleanup_retryable = false;
 254
 255         ret = get_unused_fd_flags(O_CLOEXEC);
 256         if (ret < 0)
 257                 goto err_free;
 258         resp.async_fd = ret;
 259
 260         filp = ib_uverbs_alloc_async_event_file(file, ib_dev);
 261         if (IS_ERR(filp)) {
 262                 ret = PTR_ERR(filp);
 263                 goto err_fd;
 264         }
 265
 266         resp.num_comp_vectors = file->device->num_comp_vectors;
 267
 268         ret = uverbs_response(attrs, &resp, sizeof(resp));
 269         if (ret)
 270                 goto err_file;
 271
 272         ret = ib_dev->ops.alloc_ucontext(ucontext, &attrs->driver_udata);
 273         if (ret)
 274                 goto err_file;
 275
 276         rdma_restrack_uadd(&ucontext->res);
 277
 278         fd_install(resp.async_fd, filp);
 279
 280         /*
 281          * Make sure that ib_uverbs_get_ucontext() sees the pointer update
 282          * only after all writes to setup the ucontext have completed
 283          */
 284         smp_store_release(&file->ucontext, ucontext);
 285
 286         mutex_unlock(&file->ucontext_lock);
 287
 288         return 0;
 289
 290 err_file:
 291         ib_uverbs_free_async_event_file(file);
 292         fput(filp);
 293
 294 err_fd:
 295         put_unused_fd(resp.async_fd);
 296
 297 err_free:
 298         kfree(ucontext);
 299
 300 err_alloc:
 301         ib_rdmacg_uncharge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE);
 302
 303 err:
 304         mutex_unlock(&file->ucontext_lock);
 305         return ret;
 306 }
 307
 308 static void copy_query_dev_fields(struct ib_ucontext *ucontext,
 309                                   struct ib_uverbs_query_device_resp *resp,
 310                                   struct ib_device_attr *attr)
 311 {
 312         struct ib_device *ib_dev = ucontext->device;
 313
 314         resp->fw_ver            = attr->fw_ver;
 315         resp->node_guid         = ib_dev->node_guid;
 316         resp->sys_image_guid    = attr->sys_image_guid;
 317         resp->max_mr_size       = attr->max_mr_size;
 318         resp->page_size_cap     = attr->page_size_cap;
 319         resp->vendor_id         = attr->vendor_id;
 320         resp->vendor_part_id    = attr->vendor_part_id;
 321         resp->hw_ver            = attr->hw_ver;
 322         resp->max_qp            = attr->max_qp;
 323         resp->max_qp_wr         = attr->max_qp_wr;
 324         resp->device_cap_flags  = lower_32_bits(attr->device_cap_flags);
 325         resp->max_sge           = min(attr->max_send_sge, attr->max_recv_sge);
 326         resp->max_sge_rd        = attr->max_sge_rd;
 327         resp->max_cq            = attr->max_cq;
 328         resp->max_cqe           = attr->max_cqe;
 329         resp->max_mr            = attr->max_mr;
 330         resp->max_pd            = attr->max_pd;
 331         resp->max_qp_rd_atom    = attr->max_qp_rd_atom;
 332         resp->max_ee_rd_atom    = attr->max_ee_rd_atom;
 333         resp->max_res_rd_atom   = attr->max_res_rd_atom;
 334         resp->max_qp_init_rd_atom       = attr->max_qp_init_rd_atom;
 335         resp->max_ee_init_rd_atom       = attr->max_ee_init_rd_atom;
 336         resp->atomic_cap                = attr->atomic_cap;
 337         resp->max_ee                    = attr->max_ee;
 338         resp->max_rdd                   = attr->max_rdd;
 339         resp->max_mw                    = attr->max_mw;
 340         resp->max_raw_ipv6_qp           = attr->max_raw_ipv6_qp;
 341         resp->max_raw_ethy_qp           = attr->max_raw_ethy_qp;
 342         resp->max_mcast_grp             = attr->max_mcast_grp;
 343         resp->max_mcast_qp_attach       = attr->max_mcast_qp_attach;
 344         resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach;
 345         resp->max_ah                    = attr->max_ah;
 346         resp->max_fmr                   = attr->max_fmr;
 347         resp->max_map_per_fmr           = attr->max_map_per_fmr;
 348         resp->max_srq                   = attr->max_srq;
 349         resp->max_srq_wr                = attr->max_srq_wr;
 350         resp->max_srq_sge               = attr->max_srq_sge;
 351         resp->max_pkeys                 = attr->max_pkeys;
 352         resp->local_ca_ack_delay        = attr->local_ca_ack_delay;
 353         resp->phys_port_cnt             = ib_dev->phys_port_cnt;
 354 }
 355
 356 static int ib_uverbs_query_device(struct uverbs_attr_bundle *attrs)
 357 {
 358         struct ib_uverbs_query_device      cmd;
 359         struct ib_uverbs_query_device_resp resp;
 360         struct ib_ucontext *ucontext;
 361         int ret;
 362
 363         ucontext = ib_uverbs_get_ucontext(attrs);
 364         if (IS_ERR(ucontext))
 365                 return PTR_ERR(ucontext);
 366
 367         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 368         if (ret)
 369                 return ret;
 370
 371         memset(&resp, 0, sizeof resp);
 372         copy_query_dev_fields(ucontext, &resp, &ucontext->device->attrs);
 373
 374         return uverbs_response(attrs, &resp, sizeof(resp));
 375 }
 376
 377 static int ib_uverbs_query_port(struct uverbs_attr_bundle *attrs)
 378 {
 379         struct ib_uverbs_query_port      cmd;
 380         struct ib_uverbs_query_port_resp resp;
 381         struct ib_port_attr              attr;
 382         int                              ret;
 383         struct ib_ucontext *ucontext;
 384         struct ib_device *ib_dev;
 385
 386         ucontext = ib_uverbs_get_ucontext(attrs);
 387         if (IS_ERR(ucontext))
 388                 return PTR_ERR(ucontext);
 389         ib_dev = ucontext->device;
 390
 391         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 392         if (ret)
 393                 return ret;
 394
 395         ret = ib_query_port(ib_dev, cmd.port_num, &attr);
 396         if (ret)
 397                 return ret;
 398
 399         memset(&resp, 0, sizeof resp);
 400         copy_port_attr_to_resp(&attr, &resp, ib_dev, cmd.port_num);
 401
 402         return uverbs_response(attrs, &resp, sizeof(resp));
 403 }
 404
 405 static int ib_uverbs_alloc_pd(struct uverbs_attr_bundle *attrs)
 406 {
 407         struct ib_uverbs_alloc_pd      cmd;
 408         struct ib_uverbs_alloc_pd_resp resp;
 409         struct ib_uobject             *uobj;
 410         struct ib_pd                  *pd;
 411         int                            ret;
 412         struct ib_device *ib_dev;
 413
 414         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 415         if (ret)
 416                 return ret;
 417
 418         uobj = uobj_alloc(UVERBS_OBJECT_PD, attrs, &ib_dev);
 419         if (IS_ERR(uobj))
 420                 return PTR_ERR(uobj);
 421
 422         pd = rdma_zalloc_drv_obj(ib_dev, ib_pd);
 423         if (!pd) {
 424                 ret = -ENOMEM;
 425                 goto err;
 426         }
 427
 428         pd->device  = ib_dev;
 429         pd->uobject = uobj;
 430         pd->__internal_mr = NULL;
 431         atomic_set(&pd->usecnt, 0);
 432         pd->res.type = RDMA_RESTRACK_PD;
 433
 434         ret = ib_dev->ops.alloc_pd(pd, &attrs->driver_udata);
 435         if (ret)
 436                 goto err_alloc;
 437
 438         uobj->object = pd;
 439         memset(&resp, 0, sizeof resp);
 440         resp.pd_handle = uobj->id;
 441         rdma_restrack_uadd(&pd->res);
 442
 443         ret = uverbs_response(attrs, &resp, sizeof(resp));
 444         if (ret)
 445                 goto err_copy;
 446
 447         return uobj_alloc_commit(uobj, attrs);
 448
 449 err_copy:
 450         ib_dealloc_pd_user(pd, uverbs_get_cleared_udata(attrs));
 451         pd = NULL;
 452 err_alloc:
 453         kfree(pd);
 454 err:
 455         uobj_alloc_abort(uobj, attrs);
 456         return ret;
 457 }
 458
 459 static int ib_uverbs_dealloc_pd(struct uverbs_attr_bundle *attrs)
 460 {
 461         struct ib_uverbs_dealloc_pd cmd;
 462         int ret;
 463
 464         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 465         if (ret)
 466                 return ret;
 467
 468         return uobj_perform_destroy(UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
 469 }
 470
 471 struct xrcd_table_entry {
 472         struct rb_node  node;
 473         struct ib_xrcd *xrcd;
 474         struct inode   *inode;
 475 };
 476
 477 static int xrcd_table_insert(struct ib_uverbs_device *dev,
 478                             struct inode *inode,
 479                             struct ib_xrcd *xrcd)
 480 {
 481         struct xrcd_table_entry *entry, *scan;
 482         struct rb_node **p = &dev->xrcd_tree.rb_node;
 483         struct rb_node *parent = NULL;
 484
 485         entry = kmalloc(sizeof *entry, GFP_KERNEL);
 486         if (!entry)
 487                 return -ENOMEM;
 488
 489         entry->xrcd  = xrcd;
 490         entry->inode = inode;
 491
 492         while (*p) {
 493                 parent = *p;
 494                 scan = rb_entry(parent, struct xrcd_table_entry, node);
 495
 496                 if (inode < scan->inode) {
 497                         p = &(*p)->rb_left;
 498                 } else if (inode > scan->inode) {
 499                         p = &(*p)->rb_right;
 500                 } else {
 501                         kfree(entry);
 502                         return -EEXIST;
 503                 }
 504         }
 505
 506         rb_link_node(&entry->node, parent, p);
 507         rb_insert_color(&entry->node, &dev->xrcd_tree);
 508         igrab(inode);
 509         return 0;
 510 }
 511
 512 static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev,
 513                                                   struct inode *inode)
 514 {
 515         struct xrcd_table_entry *entry;
 516         struct rb_node *p = dev->xrcd_tree.rb_node;
 517
 518         while (p) {
 519                 entry = rb_entry(p, struct xrcd_table_entry, node);
 520
 521                 if (inode < entry->inode)
 522                         p = p->rb_left;
 523                 else if (inode > entry->inode)
 524                         p = p->rb_right;
 525                 else
 526                         return entry;
 527         }
 528
 529         return NULL;
 530 }
 531
 532 static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode)
 533 {
 534         struct xrcd_table_entry *entry;
 535
 536         entry = xrcd_table_search(dev, inode);
 537         if (!entry)
 538                 return NULL;
 539
 540         return entry->xrcd;
 541 }
 542
 543 static void xrcd_table_delete(struct ib_uverbs_device *dev,
 544                               struct inode *inode)
 545 {
 546         struct xrcd_table_entry *entry;
 547
 548         entry = xrcd_table_search(dev, inode);
 549         if (entry) {
 550                 iput(inode);
 551                 rb_erase(&entry->node, &dev->xrcd_tree);
 552                 kfree(entry);
 553         }
 554 }
 555
 556 static int ib_uverbs_open_xrcd(struct uverbs_attr_bundle *attrs)
 557 {
 558         struct ib_uverbs_device *ibudev = attrs->ufile->device;
 559         struct ib_uverbs_open_xrcd      cmd;
 560         struct ib_uverbs_open_xrcd_resp resp;
 561         struct ib_uxrcd_object         *obj;
 562         struct ib_xrcd                 *xrcd = NULL;
 563         struct fd                       f = {NULL, 0};
 564         struct inode                   *inode = NULL;
 565         int                             ret = 0;
 566         int                             new_xrcd = 0;
 567         struct ib_device *ib_dev;
 568
 569         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 570         if (ret)
 571                 return ret;
 572
 573         mutex_lock(&ibudev->xrcd_tree_mutex);
 574
 575         if (cmd.fd != -1) {
 576                 /* search for file descriptor */
 577                 f = fdget(cmd.fd);
 578                 if (!f.file) {
 579                         ret = -EBADF;
 580                         goto err_tree_mutex_unlock;
 581                 }
 582
 583                 inode = file_inode(f.file);
 584                 xrcd = find_xrcd(ibudev, inode);
 585                 if (!xrcd && !(cmd.oflags & O_CREAT)) {
 586                         /* no file descriptor. Need CREATE flag */
 587                         ret = -EAGAIN;
 588                         goto err_tree_mutex_unlock;
 589                 }
 590
 591                 if (xrcd && cmd.oflags & O_EXCL) {
 592                         ret = -EINVAL;
 593                         goto err_tree_mutex_unlock;
 594                 }
 595         }
 596
 597         obj = (struct ib_uxrcd_object *)uobj_alloc(UVERBS_OBJECT_XRCD, attrs,
 598                                                    &ib_dev);
 599         if (IS_ERR(obj)) {
 600                 ret = PTR_ERR(obj);
 601                 goto err_tree_mutex_unlock;
 602         }
 603
 604         if (!xrcd) {
 605                 xrcd = ib_dev->ops.alloc_xrcd(ib_dev, &attrs->driver_udata);
 606                 if (IS_ERR(xrcd)) {
 607                         ret = PTR_ERR(xrcd);
 608                         goto err;
 609                 }
 610
 611                 xrcd->inode   = inode;
 612                 xrcd->device  = ib_dev;
 613                 atomic_set(&xrcd->usecnt, 0);
 614                 mutex_init(&xrcd->tgt_qp_mutex);
 615                 INIT_LIST_HEAD(&xrcd->tgt_qp_list);
 616                 new_xrcd = 1;
 617         }
 618
 619         atomic_set(&obj->refcnt, 0);
 620         obj->uobject.object = xrcd;
 621         memset(&resp, 0, sizeof resp);
 622         resp.xrcd_handle = obj->uobject.id;
 623
 624         if (inode) {
 625                 if (new_xrcd) {
 626                         /* create new inode/xrcd table entry */
 627                         ret = xrcd_table_insert(ibudev, inode, xrcd);
 628                         if (ret)
 629                                 goto err_dealloc_xrcd;
 630                 }
 631                 atomic_inc(&xrcd->usecnt);
 632         }
 633
 634         ret = uverbs_response(attrs, &resp, sizeof(resp));
 635         if (ret)
 636                 goto err_copy;
 637
 638         if (f.file)
 639                 fdput(f);
 640
 641         mutex_unlock(&ibudev->xrcd_tree_mutex);
 642
 643         return uobj_alloc_commit(&obj->uobject, attrs);
 644
 645 err_copy:
 646         if (inode) {
 647                 if (new_xrcd)
 648                         xrcd_table_delete(ibudev, inode);
 649                 atomic_dec(&xrcd->usecnt);
 650         }
 651
 652 err_dealloc_xrcd:
 653         ib_dealloc_xrcd(xrcd, uverbs_get_cleared_udata(attrs));
 654
 655 err:
 656         uobj_alloc_abort(&obj->uobject, attrs);
 657
 658 err_tree_mutex_unlock:
 659         if (f.file)
 660                 fdput(f);
 661
 662         mutex_unlock(&ibudev->xrcd_tree_mutex);
 663
 664         return ret;
 665 }
 666
 667 static int ib_uverbs_close_xrcd(struct uverbs_attr_bundle *attrs)
 668 {
 669         struct ib_uverbs_close_xrcd cmd;
 670         int ret;
 671
 672         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 673         if (ret)
 674                 return ret;
 675
 676         return uobj_perform_destroy(UVERBS_OBJECT_XRCD, cmd.xrcd_handle, attrs);
 677 }
 678
 679 int ib_uverbs_dealloc_xrcd(struct ib_uobject *uobject, struct ib_xrcd *xrcd,
 680                            enum rdma_remove_reason why,
 681                            struct uverbs_attr_bundle *attrs)
 682 {
 683         struct inode *inode;
 684         int ret;
 685         struct ib_uverbs_device *dev = attrs->ufile->device;
 686
 687         inode = xrcd->inode;
 688         if (inode && !atomic_dec_and_test(&xrcd->usecnt))
 689                 return 0;
 690
 691         ret = ib_dealloc_xrcd(xrcd, &attrs->driver_udata);
 692
 693         if (ib_is_destroy_retryable(ret, why, uobject)) {
 694                 atomic_inc(&xrcd->usecnt);
 695                 return ret;
 696         }
 697
 698         if (inode)
 699                 xrcd_table_delete(dev, inode);
 700
 701         return ret;
 702 }
 703
 704 static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs)
 705 {
 706         struct ib_uverbs_reg_mr      cmd;
 707         struct ib_uverbs_reg_mr_resp resp;
 708         struct ib_uobject           *uobj;
 709         struct ib_pd                *pd;
 710         struct ib_mr                *mr;
 711         int                          ret;
 712         struct ib_device *ib_dev;
 713
 714         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 715         if (ret)
 716                 return ret;
 717
 718         if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
 719                 return -EINVAL;
 720
 721         ret = ib_check_mr_access(cmd.access_flags);
 722         if (ret)
 723                 return ret;
 724
 725         uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev);
 726         if (IS_ERR(uobj))
 727                 return PTR_ERR(uobj);
 728
 729         pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
 730         if (!pd) {
 731                 ret = -EINVAL;
 732                 goto err_free;
 733         }
 734
 735         if (cmd.access_flags & IB_ACCESS_ON_DEMAND) {
 736                 if (!(pd->device->attrs.device_cap_flags &
 737                       IB_DEVICE_ON_DEMAND_PAGING)) {
 738                         pr_debug("ODP support not available\n");
 739                         ret = -EINVAL;
 740                         goto err_put;
 741                 }
 742         }
 743
 744         mr = pd->device->ops.reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va,
 745                                          cmd.access_flags,
 746                                          &attrs->driver_udata);
 747         if (IS_ERR(mr)) {
 748                 ret = PTR_ERR(mr);
 749                 goto err_put;
 750         }
 751
 752         mr->device  = pd->device;
 753         mr->pd      = pd;
 754         mr->type    = IB_MR_TYPE_USER;
 755         mr->dm      = NULL;
 756         mr->sig_attrs = NULL;
 757         mr->uobject = uobj;
 758         atomic_inc(&pd->usecnt);
 759         mr->res.type = RDMA_RESTRACK_MR;
 760         rdma_restrack_uadd(&mr->res);
 761
 762         uobj->object = mr;
 763
 764         memset(&resp, 0, sizeof resp);
 765         resp.lkey      = mr->lkey;
 766         resp.rkey      = mr->rkey;
 767         resp.mr_handle = uobj->id;
 768
 769         ret = uverbs_response(attrs, &resp, sizeof(resp));
 770         if (ret)
 771                 goto err_copy;
 772
 773         uobj_put_obj_read(pd);
 774
 775         return uobj_alloc_commit(uobj, attrs);
 776
 777 err_copy:
 778         ib_dereg_mr_user(mr, uverbs_get_cleared_udata(attrs));
 779
 780 err_put:
 781         uobj_put_obj_read(pd);
 782
 783 err_free:
 784         uobj_alloc_abort(uobj, attrs);
 785         return ret;
 786 }
 787
 788 static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs)
 789 {
 790         struct ib_uverbs_rereg_mr      cmd;
 791         struct ib_uverbs_rereg_mr_resp resp;
 792         struct ib_pd                *pd = NULL;
 793         struct ib_mr                *mr;
 794         struct ib_pd                *old_pd;
 795         int                          ret;
 796         struct ib_uobject           *uobj;
 797
 798         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 799         if (ret)
 800                 return ret;
 801
 802         if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags)
 803                 return -EINVAL;
 804
 805         if ((cmd.flags & IB_MR_REREG_TRANS) &&
 806             (!cmd.start || !cmd.hca_va || 0 >= cmd.length ||
 807              (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)))
 808                         return -EINVAL;
 809
 810         uobj = uobj_get_write(UVERBS_OBJECT_MR, cmd.mr_handle, attrs);
 811         if (IS_ERR(uobj))
 812                 return PTR_ERR(uobj);
 813
 814         mr = uobj->object;
 815
 816         if (mr->dm) {
 817                 ret = -EINVAL;
 818                 goto put_uobjs;
 819         }
 820
 821         if (cmd.flags & IB_MR_REREG_ACCESS) {
 822                 ret = ib_check_mr_access(cmd.access_flags);
 823                 if (ret)
 824                         goto put_uobjs;
 825         }
 826
 827         if (cmd.flags & IB_MR_REREG_PD) {
 828                 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle,
 829                                        attrs);
 830                 if (!pd) {
 831                         ret = -EINVAL;
 832                         goto put_uobjs;
 833                 }
 834         }
 835
 836         old_pd = mr->pd;
 837         ret = mr->device->ops.rereg_user_mr(mr, cmd.flags, cmd.start,
 838                                             cmd.length, cmd.hca_va,
 839                                             cmd.access_flags, pd,
 840                                             &attrs->driver_udata);
 841         if (ret)
 842                 goto put_uobj_pd;
 843
 844         if (cmd.flags & IB_MR_REREG_PD) {
 845                 atomic_inc(&pd->usecnt);
 846                 mr->pd = pd;
 847                 atomic_dec(&old_pd->usecnt);
 848         }
 849
 850         memset(&resp, 0, sizeof(resp));
 851         resp.lkey      = mr->lkey;
 852         resp.rkey      = mr->rkey;
 853
 854         ret = uverbs_response(attrs, &resp, sizeof(resp));
 855
 856 put_uobj_pd:
 857         if (cmd.flags & IB_MR_REREG_PD)
 858                 uobj_put_obj_read(pd);
 859
 860 put_uobjs:
 861         uobj_put_write(uobj);
 862
 863         return ret;
 864 }
 865
 866 static int ib_uverbs_dereg_mr(struct uverbs_attr_bundle *attrs)
 867 {
 868         struct ib_uverbs_dereg_mr cmd;
 869         int ret;
 870
 871         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 872         if (ret)
 873                 return ret;
 874
 875         return uobj_perform_destroy(UVERBS_OBJECT_MR, cmd.mr_handle, attrs);
 876 }
 877
 878 static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs)
 879 {
 880         struct ib_uverbs_alloc_mw      cmd;
 881         struct ib_uverbs_alloc_mw_resp resp;
 882         struct ib_uobject             *uobj;
 883         struct ib_pd                  *pd;
 884         struct ib_mw                  *mw;
 885         int                            ret;
 886         struct ib_device *ib_dev;
 887
 888         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 889         if (ret)
 890                 return ret;
 891
 892         uobj = uobj_alloc(UVERBS_OBJECT_MW, attrs, &ib_dev);
 893         if (IS_ERR(uobj))
 894                 return PTR_ERR(uobj);
 895
 896         pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
 897         if (!pd) {
 898                 ret = -EINVAL;
 899                 goto err_free;
 900         }
 901
 902         if (cmd.mw_type != IB_MW_TYPE_1 && cmd.mw_type != IB_MW_TYPE_2) {
 903                 ret = -EINVAL;
 904                 goto err_put;
 905         }
 906
 907         mw = pd->device->ops.alloc_mw(pd, cmd.mw_type, &attrs->driver_udata);
 908         if (IS_ERR(mw)) {
 909                 ret = PTR_ERR(mw);
 910                 goto err_put;
 911         }
 912
 913         mw->device  = pd->device;
 914         mw->pd      = pd;
 915         mw->uobject = uobj;
 916         atomic_inc(&pd->usecnt);
 917
 918         uobj->object = mw;
 919
 920         memset(&resp, 0, sizeof(resp));
 921         resp.rkey      = mw->rkey;
 922         resp.mw_handle = uobj->id;
 923
 924         ret = uverbs_response(attrs, &resp, sizeof(resp));
 925         if (ret)
 926                 goto err_copy;
 927
 928         uobj_put_obj_read(pd);
 929         return uobj_alloc_commit(uobj, attrs);
 930
 931 err_copy:
 932         uverbs_dealloc_mw(mw);
 933 err_put:
 934         uobj_put_obj_read(pd);
 935 err_free:
 936         uobj_alloc_abort(uobj, attrs);
 937         return ret;
 938 }
 939
 940 static int ib_uverbs_dealloc_mw(struct uverbs_attr_bundle *attrs)
 941 {
 942         struct ib_uverbs_dealloc_mw cmd;
 943         int ret;
 944
 945         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 946         if (ret)
 947                 return ret;
 948
 949         return uobj_perform_destroy(UVERBS_OBJECT_MW, cmd.mw_handle, attrs);
 950 }
 951
 952 static int ib_uverbs_create_comp_channel(struct uverbs_attr_bundle *attrs)
 953 {
 954         struct ib_uverbs_create_comp_channel       cmd;
 955         struct ib_uverbs_create_comp_channel_resp  resp;
 956         struct ib_uobject                         *uobj;
 957         struct ib_uverbs_completion_event_file    *ev_file;
 958         struct ib_device *ib_dev;
 959         int ret;
 960
 961         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
 962         if (ret)
 963                 return ret;
 964
 965         uobj = uobj_alloc(UVERBS_OBJECT_COMP_CHANNEL, attrs, &ib_dev);
 966         if (IS_ERR(uobj))
 967                 return PTR_ERR(uobj);
 968
 969         resp.fd = uobj->id;
 970
 971         ev_file = container_of(uobj, struct ib_uverbs_completion_event_file,
 972                                uobj);
 973         ib_uverbs_init_event_queue(&ev_file->ev_queue);
 974
 975         ret = uverbs_response(attrs, &resp, sizeof(resp));
 976         if (ret) {
 977                 uobj_alloc_abort(uobj, attrs);
 978                 return ret;
 979         }
 980
 981         return uobj_alloc_commit(uobj, attrs);
 982 }
 983
 984 static struct ib_ucq_object *create_cq(struct uverbs_attr_bundle *attrs,
 985                                        struct ib_uverbs_ex_create_cq *cmd)
 986 {
 987         struct ib_ucq_object           *obj;
 988         struct ib_uverbs_completion_event_file    *ev_file = NULL;
 989         struct ib_cq                   *cq;
 990         int                             ret;
 991         struct ib_uverbs_ex_create_cq_resp resp;
 992         struct ib_cq_init_attr attr = {};
 993         struct ib_device *ib_dev;
 994
 995         if (cmd->comp_vector >= attrs->ufile->device->num_comp_vectors)
 996                 return ERR_PTR(-EINVAL);
 997
 998         obj = (struct ib_ucq_object *)uobj_alloc(UVERBS_OBJECT_CQ, attrs,
 999                                                  &ib_dev);
1000         if (IS_ERR(obj))
1001                 return obj;
1002
1003         if (cmd->comp_channel >= 0) {
1004                 ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel, attrs);
1005                 if (IS_ERR(ev_file)) {
1006                         ret = PTR_ERR(ev_file);
1007                         goto err;
1008                 }
1009         }
1010
1011         obj->uobject.user_handle = cmd->user_handle;
1012         obj->comp_events_reported  = 0;
1013         obj->async_events_reported = 0;
1014         INIT_LIST_HEAD(&obj->comp_list);
1015         INIT_LIST_HEAD(&obj->async_list);
1016
1017         attr.cqe = cmd->cqe;
1018         attr.comp_vector = cmd->comp_vector;
1019         attr.flags = cmd->flags;
1020
1021         cq = rdma_zalloc_drv_obj(ib_dev, ib_cq);
1022         if (!cq) {
1023                 ret = -ENOMEM;
1024                 goto err_file;
1025         }
1026         cq->device        = ib_dev;
1027         cq->uobject       = &obj->uobject;
1028         cq->comp_handler  = ib_uverbs_comp_handler;
1029         cq->event_handler = ib_uverbs_cq_event_handler;
1030         cq->cq_context    = ev_file ? &ev_file->ev_queue : NULL;
1031         atomic_set(&cq->usecnt, 0);
1032
1033         ret = ib_dev->ops.create_cq(cq, &attr, &attrs->driver_udata);
1034         if (ret)
1035                 goto err_free;
1036
1037         obj->uobject.object = cq;
1038         memset(&resp, 0, sizeof resp);
1039         resp.base.cq_handle = obj->uobject.id;
1040         resp.base.cqe       = cq->cqe;
1041         resp.response_length = uverbs_response_length(attrs, sizeof(resp));
1042
1043         cq->res.type = RDMA_RESTRACK_CQ;
1044         rdma_restrack_uadd(&cq->res);
1045
1046         ret = uverbs_response(attrs, &resp, sizeof(resp));
1047         if (ret)
1048                 goto err_cb;
1049
1050         ret = uobj_alloc_commit(&obj->uobject, attrs);
1051         if (ret)
1052                 return ERR_PTR(ret);
1053         return obj;
1054
1055 err_cb:
1056         ib_destroy_cq_user(cq, uverbs_get_cleared_udata(attrs));
1057         cq = NULL;
1058 err_free:
1059         kfree(cq);
1060 err_file:
1061         if (ev_file)
1062                 ib_uverbs_release_ucq(attrs->ufile, ev_file, obj);
1063
1064 err:
1065         uobj_alloc_abort(&obj->uobject, attrs);
1066
1067         return ERR_PTR(ret);
1068 }
1069
1070 static int ib_uverbs_create_cq(struct uverbs_attr_bundle *attrs)
1071 {
1072         struct ib_uverbs_create_cq      cmd;
1073         struct ib_uverbs_ex_create_cq   cmd_ex;
1074         struct ib_ucq_object           *obj;
1075         int ret;
1076
1077         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1078         if (ret)
1079                 return ret;
1080
1081         memset(&cmd_ex, 0, sizeof(cmd_ex));
1082         cmd_ex.user_handle = cmd.user_handle;
1083         cmd_ex.cqe = cmd.cqe;
1084         cmd_ex.comp_vector = cmd.comp_vector;
1085         cmd_ex.comp_channel = cmd.comp_channel;
1086
1087         obj = create_cq(attrs, &cmd_ex);
1088         return PTR_ERR_OR_ZERO(obj);
1089 }
1090
1091 static int ib_uverbs_ex_create_cq(struct uverbs_attr_bundle *attrs)
1092 {
1093         struct ib_uverbs_ex_create_cq  cmd;
1094         struct ib_ucq_object           *obj;
1095         int ret;
1096
1097         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1098         if (ret)
1099                 return ret;
1100
1101         if (cmd.comp_mask)
1102                 return -EINVAL;
1103
1104         if (cmd.reserved)
1105                 return -EINVAL;
1106
1107         obj = create_cq(attrs, &cmd);
1108         return PTR_ERR_OR_ZERO(obj);
1109 }
1110
1111 static int ib_uverbs_resize_cq(struct uverbs_attr_bundle *attrs)
1112 {
1113         struct ib_uverbs_resize_cq      cmd;
1114         struct ib_uverbs_resize_cq_resp resp = {};
1115         struct ib_cq                    *cq;
1116         int                             ret = -EINVAL;
1117
1118         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1119         if (ret)
1120                 return ret;
1121
1122         cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1123         if (!cq)
1124                 return -EINVAL;
1125
1126         ret = cq->device->ops.resize_cq(cq, cmd.cqe, &attrs->driver_udata);
1127         if (ret)
1128                 goto out;
1129
1130         resp.cqe = cq->cqe;
1131
1132         ret = uverbs_response(attrs, &resp, sizeof(resp));
1133 out:
1134         uobj_put_obj_read(cq);
1135
1136         return ret;
1137 }
1138
1139 static int copy_wc_to_user(struct ib_device *ib_dev, void __user *dest,
1140                            struct ib_wc *wc)
1141 {
1142         struct ib_uverbs_wc tmp;
1143
1144         tmp.wr_id               = wc->wr_id;
1145         tmp.status              = wc->status;
1146         tmp.opcode              = wc->opcode;
1147         tmp.vendor_err          = wc->vendor_err;
1148         tmp.byte_len            = wc->byte_len;
1149         tmp.ex.imm_data         = wc->ex.imm_data;
1150         tmp.qp_num              = wc->qp->qp_num;
1151         tmp.src_qp              = wc->src_qp;
1152         tmp.wc_flags            = wc->wc_flags;
1153         tmp.pkey_index          = wc->pkey_index;
1154         if (rdma_cap_opa_ah(ib_dev, wc->port_num))
1155                 tmp.slid        = OPA_TO_IB_UCAST_LID(wc->slid);
1156         else
1157                 tmp.slid        = ib_lid_cpu16(wc->slid);
1158         tmp.sl                  = wc->sl;
1159         tmp.dlid_path_bits      = wc->dlid_path_bits;
1160         tmp.port_num            = wc->port_num;
1161         tmp.reserved            = 0;
1162
1163         if (copy_to_user(dest, &tmp, sizeof tmp))
1164                 return -EFAULT;
1165
1166         return 0;
1167 }
1168
1169 static int ib_uverbs_poll_cq(struct uverbs_attr_bundle *attrs)
1170 {
1171         struct ib_uverbs_poll_cq       cmd;
1172         struct ib_uverbs_poll_cq_resp  resp;
1173         u8 __user                     *header_ptr;
1174         u8 __user                     *data_ptr;
1175         struct ib_cq                  *cq;
1176         struct ib_wc                   wc;
1177         int                            ret;
1178
1179         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1180         if (ret)
1181                 return ret;
1182
1183         cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1184         if (!cq)
1185                 return -EINVAL;
1186
1187         /* we copy a struct ib_uverbs_poll_cq_resp to user space */
1188         header_ptr = attrs->ucore.outbuf;
1189         data_ptr = header_ptr + sizeof resp;
1190
1191         memset(&resp, 0, sizeof resp);
1192         while (resp.count < cmd.ne) {
1193                 ret = ib_poll_cq(cq, 1, &wc);
1194                 if (ret < 0)
1195                         goto out_put;
1196                 if (!ret)
1197                         break;
1198
1199                 ret = copy_wc_to_user(cq->device, data_ptr, &wc);
1200                 if (ret)
1201                         goto out_put;
1202
1203                 data_ptr += sizeof(struct ib_uverbs_wc);
1204                 ++resp.count;
1205         }
1206
1207         if (copy_to_user(header_ptr, &resp, sizeof resp)) {
1208                 ret = -EFAULT;
1209                 goto out_put;
1210         }
1211         ret = 0;
1212
1213         if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT))
1214                 ret = uverbs_output_written(attrs, UVERBS_ATTR_CORE_OUT);
1215
1216 out_put:
1217         uobj_put_obj_read(cq);
1218         return ret;
1219 }
1220
1221 static int ib_uverbs_req_notify_cq(struct uverbs_attr_bundle *attrs)
1222 {
1223         struct ib_uverbs_req_notify_cq cmd;
1224         struct ib_cq                  *cq;
1225         int ret;
1226
1227         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1228         if (ret)
1229                 return ret;
1230
1231         cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1232         if (!cq)
1233                 return -EINVAL;
1234
1235         ib_req_notify_cq(cq, cmd.solicited_only ?
1236                          IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
1237
1238         uobj_put_obj_read(cq);
1239
1240         return 0;
1241 }
1242
1243 static int ib_uverbs_destroy_cq(struct uverbs_attr_bundle *attrs)
1244 {
1245         struct ib_uverbs_destroy_cq      cmd;
1246         struct ib_uverbs_destroy_cq_resp resp;
1247         struct ib_uobject               *uobj;
1248         struct ib_ucq_object            *obj;
1249         int ret;
1250
1251         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1252         if (ret)
1253                 return ret;
1254
1255         uobj = uobj_get_destroy(UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1256         if (IS_ERR(uobj))
1257                 return PTR_ERR(uobj);
1258
1259         obj = container_of(uobj, struct ib_ucq_object, uobject);
1260         memset(&resp, 0, sizeof(resp));
1261         resp.comp_events_reported  = obj->comp_events_reported;
1262         resp.async_events_reported = obj->async_events_reported;
1263
1264         uobj_put_destroy(uobj);
1265
1266         return uverbs_response(attrs, &resp, sizeof(resp));
1267 }
1268
1269 static int create_qp(struct uverbs_attr_bundle *attrs,
1270                      struct ib_uverbs_ex_create_qp *cmd)
1271 {
1272         struct ib_uqp_object            *obj;
1273         struct ib_device                *device;
1274         struct ib_pd                    *pd = NULL;
1275         struct ib_xrcd                  *xrcd = NULL;
1276         struct ib_uobject               *xrcd_uobj = ERR_PTR(-ENOENT);
1277         struct ib_cq                    *scq = NULL, *rcq = NULL;
1278         struct ib_srq                   *srq = NULL;
1279         struct ib_qp                    *qp;
1280         struct ib_qp_init_attr          attr = {};
1281         struct ib_uverbs_ex_create_qp_resp resp;
1282         int                             ret;
1283         struct ib_rwq_ind_table *ind_tbl = NULL;
1284         bool has_sq = true;
1285         struct ib_device *ib_dev;
1286
1287         if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW))
1288                 return -EPERM;
1289
1290         obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs,
1291                                                  &ib_dev);
1292         if (IS_ERR(obj))
1293                 return PTR_ERR(obj);
1294         obj->uxrcd = NULL;
1295         obj->uevent.uobject.user_handle = cmd->user_handle;
1296         mutex_init(&obj->mcast_lock);
1297
1298         if (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE) {
1299                 ind_tbl = uobj_get_obj_read(rwq_ind_table,
1300                                             UVERBS_OBJECT_RWQ_IND_TBL,
1301                                             cmd->rwq_ind_tbl_handle, attrs);
1302                 if (!ind_tbl) {
1303                         ret = -EINVAL;
1304                         goto err_put;
1305                 }
1306
1307                 attr.rwq_ind_tbl = ind_tbl;
1308         }
1309
1310         if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) {
1311                 ret = -EINVAL;
1312                 goto err_put;
1313         }
1314
1315         if (ind_tbl && !cmd->max_send_wr)
1316                 has_sq = false;
1317
1318         if (cmd->qp_type == IB_QPT_XRC_TGT) {
1319                 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->pd_handle,
1320                                           attrs);
1321
1322                 if (IS_ERR(xrcd_uobj)) {
1323                         ret = -EINVAL;
1324                         goto err_put;
1325                 }
1326
1327                 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1328                 if (!xrcd) {
1329                         ret = -EINVAL;
1330                         goto err_put;
1331                 }
1332                 device = xrcd->device;
1333         } else {
1334                 if (cmd->qp_type == IB_QPT_XRC_INI) {
1335                         cmd->max_recv_wr = 0;
1336                         cmd->max_recv_sge = 0;
1337                 } else {
1338                         if (cmd->is_srq) {
1339                                 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ,
1340                                                         cmd->srq_handle, attrs);
1341                                 if (!srq || srq->srq_type == IB_SRQT_XRC) {
1342                                         ret = -EINVAL;
1343                                         goto err_put;
1344                                 }
1345                         }
1346
1347                         if (!ind_tbl) {
1348                                 if (cmd->recv_cq_handle != cmd->send_cq_handle) {
1349                                         rcq = uobj_get_obj_read(
1350                                                 cq, UVERBS_OBJECT_CQ,
1351                                                 cmd->recv_cq_handle, attrs);
1352                                         if (!rcq) {
1353                                                 ret = -EINVAL;
1354                                                 goto err_put;
1355                                         }
1356                                 }
1357                         }
1358                 }
1359
1360                 if (has_sq)
1361                         scq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ,
1362                                                 cmd->send_cq_handle, attrs);
1363                 if (!ind_tbl)
1364                         rcq = rcq ?: scq;
1365                 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle,
1366                                        attrs);
1367                 if (!pd || (!scq && has_sq)) {
1368                         ret = -EINVAL;
1369                         goto err_put;
1370                 }
1371
1372                 device = pd->device;
1373         }
1374
1375         attr.event_handler = ib_uverbs_qp_event_handler;
1376         attr.qp_context    = attrs->ufile;
1377         attr.send_cq       = scq;
1378         attr.recv_cq       = rcq;
1379         attr.srq           = srq;
1380         attr.xrcd          = xrcd;
1381         attr.sq_sig_type   = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR :
1382                                               IB_SIGNAL_REQ_WR;
1383         attr.qp_type       = cmd->qp_type;
1384         attr.create_flags  = 0;
1385
1386         attr.cap.max_send_wr     = cmd->max_send_wr;
1387         attr.cap.max_recv_wr     = cmd->max_recv_wr;
1388         attr.cap.max_send_sge    = cmd->max_send_sge;
1389         attr.cap.max_recv_sge    = cmd->max_recv_sge;
1390         attr.cap.max_inline_data = cmd->max_inline_data;
1391
1392         obj->uevent.events_reported     = 0;
1393         INIT_LIST_HEAD(&obj->uevent.event_list);
1394         INIT_LIST_HEAD(&obj->mcast_list);
1395
1396         attr.create_flags = cmd->create_flags;
1397         if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
1398                                 IB_QP_CREATE_CROSS_CHANNEL |
1399                                 IB_QP_CREATE_MANAGED_SEND |
1400                                 IB_QP_CREATE_MANAGED_RECV |
1401                                 IB_QP_CREATE_SCATTER_FCS |
1402                                 IB_QP_CREATE_CVLAN_STRIPPING |
1403                                 IB_QP_CREATE_SOURCE_QPN |
1404                                 IB_QP_CREATE_PCI_WRITE_END_PADDING)) {
1405                 ret = -EINVAL;
1406                 goto err_put;
1407         }
1408
1409         if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) {
1410                 if (!capable(CAP_NET_RAW)) {
1411                         ret = -EPERM;
1412                         goto err_put;
1413                 }
1414
1415                 attr.source_qpn = cmd->source_qpn;
1416         }
1417
1418         if (cmd->qp_type == IB_QPT_XRC_TGT)
1419                 qp = ib_create_qp(pd, &attr);
1420         else
1421                 qp = _ib_create_qp(device, pd, &attr, &attrs->driver_udata,
1422                                    &obj->uevent.uobject);
1423
1424         if (IS_ERR(qp)) {
1425                 ret = PTR_ERR(qp);
1426                 goto err_put;
1427         }
1428
1429         if (cmd->qp_type != IB_QPT_XRC_TGT) {
1430                 ret = ib_create_qp_security(qp, device);
1431                 if (ret)
1432                         goto err_cb;
1433
1434                 qp->pd            = pd;
1435                 qp->send_cq       = attr.send_cq;
1436                 qp->recv_cq       = attr.recv_cq;
1437                 qp->srq           = attr.srq;
1438                 qp->rwq_ind_tbl   = ind_tbl;
1439                 qp->event_handler = attr.event_handler;
1440                 qp->qp_context    = attr.qp_context;
1441                 qp->qp_type       = attr.qp_type;
1442                 atomic_set(&qp->usecnt, 0);
1443                 atomic_inc(&pd->usecnt);
1444                 qp->port = 0;
1445                 if (attr.send_cq)
1446                         atomic_inc(&attr.send_cq->usecnt);
1447                 if (attr.recv_cq)
1448                         atomic_inc(&attr.recv_cq->usecnt);
1449                 if (attr.srq)
1450                         atomic_inc(&attr.srq->usecnt);
1451                 if (ind_tbl)
1452                         atomic_inc(&ind_tbl->usecnt);
1453         } else {
1454                 /* It is done in _ib_create_qp for other QP types */
1455                 qp->uobject = &obj->uevent.uobject;
1456         }
1457
1458         obj->uevent.uobject.object = qp;
1459
1460         memset(&resp, 0, sizeof resp);
1461         resp.base.qpn             = qp->qp_num;
1462         resp.base.qp_handle       = obj->uevent.uobject.id;
1463         resp.base.max_recv_sge    = attr.cap.max_recv_sge;
1464         resp.base.max_send_sge    = attr.cap.max_send_sge;
1465         resp.base.max_recv_wr     = attr.cap.max_recv_wr;
1466         resp.base.max_send_wr     = attr.cap.max_send_wr;
1467         resp.base.max_inline_data = attr.cap.max_inline_data;
1468         resp.response_length = uverbs_response_length(attrs, sizeof(resp));
1469
1470         ret = uverbs_response(attrs, &resp, sizeof(resp));
1471         if (ret)
1472                 goto err_cb;
1473
1474         if (xrcd) {
1475                 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object,
1476                                           uobject);
1477                 atomic_inc(&obj->uxrcd->refcnt);
1478                 uobj_put_read(xrcd_uobj);
1479         }
1480
1481         if (pd)
1482                 uobj_put_obj_read(pd);
1483         if (scq)
1484                 uobj_put_obj_read(scq);
1485         if (rcq && rcq != scq)
1486                 uobj_put_obj_read(rcq);
1487         if (srq)
1488                 uobj_put_obj_read(srq);
1489         if (ind_tbl)
1490                 uobj_put_obj_read(ind_tbl);
1491
1492         return uobj_alloc_commit(&obj->uevent.uobject, attrs);
1493 err_cb:
1494         ib_destroy_qp_user(qp, uverbs_get_cleared_udata(attrs));
1495
1496 err_put:
1497         if (!IS_ERR(xrcd_uobj))
1498                 uobj_put_read(xrcd_uobj);
1499         if (pd)
1500                 uobj_put_obj_read(pd);
1501         if (scq)
1502                 uobj_put_obj_read(scq);
1503         if (rcq && rcq != scq)
1504                 uobj_put_obj_read(rcq);
1505         if (srq)
1506                 uobj_put_obj_read(srq);
1507         if (ind_tbl)
1508                 uobj_put_obj_read(ind_tbl);
1509
1510         uobj_alloc_abort(&obj->uevent.uobject, attrs);
1511         return ret;
1512 }
1513
1514 static int ib_uverbs_create_qp(struct uverbs_attr_bundle *attrs)
1515 {
1516         struct ib_uverbs_create_qp      cmd;
1517         struct ib_uverbs_ex_create_qp   cmd_ex;
1518         int ret;
1519
1520         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1521         if (ret)
1522                 return ret;
1523
1524         memset(&cmd_ex, 0, sizeof(cmd_ex));
1525         cmd_ex.user_handle = cmd.user_handle;
1526         cmd_ex.pd_handle = cmd.pd_handle;
1527         cmd_ex.send_cq_handle = cmd.send_cq_handle;
1528         cmd_ex.recv_cq_handle = cmd.recv_cq_handle;
1529         cmd_ex.srq_handle = cmd.srq_handle;
1530         cmd_ex.max_send_wr = cmd.max_send_wr;
1531         cmd_ex.max_recv_wr = cmd.max_recv_wr;
1532         cmd_ex.max_send_sge = cmd.max_send_sge;
1533         cmd_ex.max_recv_sge = cmd.max_recv_sge;
1534         cmd_ex.max_inline_data = cmd.max_inline_data;
1535         cmd_ex.sq_sig_all = cmd.sq_sig_all;
1536         cmd_ex.qp_type = cmd.qp_type;
1537         cmd_ex.is_srq = cmd.is_srq;
1538
1539         return create_qp(attrs, &cmd_ex);
1540 }
1541
1542 static int ib_uverbs_ex_create_qp(struct uverbs_attr_bundle *attrs)
1543 {
1544         struct ib_uverbs_ex_create_qp cmd;
1545         int ret;
1546
1547         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1548         if (ret)
1549                 return ret;
1550
1551         if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK)
1552                 return -EINVAL;
1553
1554         if (cmd.reserved)
1555                 return -EINVAL;
1556
1557         return create_qp(attrs, &cmd);
1558 }
1559
1560 static int ib_uverbs_open_qp(struct uverbs_attr_bundle *attrs)
1561 {
1562         struct ib_uverbs_open_qp        cmd;
1563         struct ib_uverbs_create_qp_resp resp;
1564         struct ib_uqp_object           *obj;
1565         struct ib_xrcd                 *xrcd;
1566         struct ib_uobject              *uninitialized_var(xrcd_uobj);
1567         struct ib_qp                   *qp;
1568         struct ib_qp_open_attr          attr;
1569         int ret;
1570         struct ib_device *ib_dev;
1571
1572         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1573         if (ret)
1574                 return ret;
1575
1576         obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs,
1577                                                  &ib_dev);
1578         if (IS_ERR(obj))
1579                 return PTR_ERR(obj);
1580
1581         xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd.pd_handle, attrs);
1582         if (IS_ERR(xrcd_uobj)) {
1583                 ret = -EINVAL;
1584                 goto err_put;
1585         }
1586
1587         xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1588         if (!xrcd) {
1589                 ret = -EINVAL;
1590                 goto err_xrcd;
1591         }
1592
1593         attr.event_handler = ib_uverbs_qp_event_handler;
1594         attr.qp_context    = attrs->ufile;
1595         attr.qp_num        = cmd.qpn;
1596         attr.qp_type       = cmd.qp_type;
1597
1598         obj->uevent.events_reported = 0;
1599         INIT_LIST_HEAD(&obj->uevent.event_list);
1600         INIT_LIST_HEAD(&obj->mcast_list);
1601
1602         qp = ib_open_qp(xrcd, &attr);
1603         if (IS_ERR(qp)) {
1604                 ret = PTR_ERR(qp);
1605                 goto err_xrcd;
1606         }
1607
1608         obj->uevent.uobject.object = qp;
1609         obj->uevent.uobject.user_handle = cmd.user_handle;
1610
1611         memset(&resp, 0, sizeof resp);
1612         resp.qpn       = qp->qp_num;
1613         resp.qp_handle = obj->uevent.uobject.id;
1614
1615         ret = uverbs_response(attrs, &resp, sizeof(resp));
1616         if (ret)
1617                 goto err_destroy;
1618
1619         obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
1620         atomic_inc(&obj->uxrcd->refcnt);
1621         qp->uobject = &obj->uevent.uobject;
1622         uobj_put_read(xrcd_uobj);
1623
1624         return uobj_alloc_commit(&obj->uevent.uobject, attrs);
1625
1626 err_destroy:
1627         ib_destroy_qp_user(qp, uverbs_get_cleared_udata(attrs));
1628 err_xrcd:
1629         uobj_put_read(xrcd_uobj);
1630 err_put:
1631         uobj_alloc_abort(&obj->uevent.uobject, attrs);
1632         return ret;
1633 }
1634
1635 static void copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest *uverb_attr,
1636                                    struct rdma_ah_attr *rdma_attr)
1637 {
1638         const struct ib_global_route   *grh;
1639
1640         uverb_attr->dlid              = rdma_ah_get_dlid(rdma_attr);
1641         uverb_attr->sl                = rdma_ah_get_sl(rdma_attr);
1642         uverb_attr->src_path_bits     = rdma_ah_get_path_bits(rdma_attr);
1643         uverb_attr->static_rate       = rdma_ah_get_static_rate(rdma_attr);
1644         uverb_attr->is_global         = !!(rdma_ah_get_ah_flags(rdma_attr) &
1645                                          IB_AH_GRH);
1646         if (uverb_attr->is_global) {
1647                 grh = rdma_ah_read_grh(rdma_attr);
1648                 memcpy(uverb_attr->dgid, grh->dgid.raw, 16);
1649                 uverb_attr->flow_label        = grh->flow_label;
1650                 uverb_attr->sgid_index        = grh->sgid_index;
1651                 uverb_attr->hop_limit         = grh->hop_limit;
1652                 uverb_attr->traffic_class     = grh->traffic_class;
1653         }
1654         uverb_attr->port_num          = rdma_ah_get_port_num(rdma_attr);
1655 }
1656
1657 static int ib_uverbs_query_qp(struct uverbs_attr_bundle *attrs)
1658 {
1659         struct ib_uverbs_query_qp      cmd;
1660         struct ib_uverbs_query_qp_resp resp;
1661         struct ib_qp                   *qp;
1662         struct ib_qp_attr              *attr;
1663         struct ib_qp_init_attr         *init_attr;
1664         int                            ret;
1665
1666         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1667         if (ret)
1668                 return ret;
1669
1670         attr      = kmalloc(sizeof *attr, GFP_KERNEL);
1671         init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL);
1672         if (!attr || !init_attr) {
1673                 ret = -ENOMEM;
1674                 goto out;
1675         }
1676
1677         qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
1678         if (!qp) {
1679                 ret = -EINVAL;
1680                 goto out;
1681         }
1682
1683         ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr);
1684
1685         uobj_put_obj_read(qp);
1686
1687         if (ret)
1688                 goto out;
1689
1690         memset(&resp, 0, sizeof resp);
1691
1692         resp.qp_state               = attr->qp_state;
1693         resp.cur_qp_state           = attr->cur_qp_state;
1694         resp.path_mtu               = attr->path_mtu;
1695         resp.path_mig_state         = attr->path_mig_state;
1696         resp.qkey                   = attr->qkey;
1697         resp.rq_psn                 = attr->rq_psn;
1698         resp.sq_psn                 = attr->sq_psn;
1699         resp.dest_qp_num            = attr->dest_qp_num;
1700         resp.qp_access_flags        = attr->qp_access_flags;
1701         resp.pkey_index             = attr->pkey_index;
1702         resp.alt_pkey_index         = attr->alt_pkey_index;
1703         resp.sq_draining            = attr->sq_draining;
1704         resp.max_rd_atomic          = attr->max_rd_atomic;
1705         resp.max_dest_rd_atomic     = attr->max_dest_rd_atomic;
1706         resp.min_rnr_timer          = attr->min_rnr_timer;
1707         resp.port_num               = attr->port_num;
1708         resp.timeout                = attr->timeout;
1709         resp.retry_cnt              = attr->retry_cnt;
1710         resp.rnr_retry              = attr->rnr_retry;
1711         resp.alt_port_num           = attr->alt_port_num;
1712         resp.alt_timeout            = attr->alt_timeout;
1713
1714         copy_ah_attr_to_uverbs(&resp.dest, &attr->ah_attr);
1715         copy_ah_attr_to_uverbs(&resp.alt_dest, &attr->alt_ah_attr);
1716
1717         resp.max_send_wr            = init_attr->cap.max_send_wr;
1718         resp.max_recv_wr            = init_attr->cap.max_recv_wr;
1719         resp.max_send_sge           = init_attr->cap.max_send_sge;
1720         resp.max_recv_sge           = init_attr->cap.max_recv_sge;
1721         resp.max_inline_data        = init_attr->cap.max_inline_data;
1722         resp.sq_sig_all             = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
1723
1724         ret = uverbs_response(attrs, &resp, sizeof(resp));
1725
1726 out:
1727         kfree(attr);
1728         kfree(init_attr);
1729
1730         return ret;
1731 }
1732
1733 /* Remove ignored fields set in the attribute mask */
1734 static int modify_qp_mask(enum ib_qp_type qp_type, int mask)
1735 {
1736         switch (qp_type) {
1737         case IB_QPT_XRC_INI:
1738                 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER);
1739         case IB_QPT_XRC_TGT:
1740                 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT |
1741                                 IB_QP_RNR_RETRY);
1742         default:
1743                 return mask;
1744         }
1745 }
1746
1747 static void copy_ah_attr_from_uverbs(struct ib_device *dev,
1748                                      struct rdma_ah_attr *rdma_attr,
1749                                      struct ib_uverbs_qp_dest *uverb_attr)
1750 {
1751         rdma_attr->type = rdma_ah_find_type(dev, uverb_attr->port_num);
1752         if (uverb_attr->is_global) {
1753                 rdma_ah_set_grh(rdma_attr, NULL,
1754                                 uverb_attr->flow_label,
1755                                 uverb_attr->sgid_index,
1756                                 uverb_attr->hop_limit,
1757                                 uverb_attr->traffic_class);
1758                 rdma_ah_set_dgid_raw(rdma_attr, uverb_attr->dgid);
1759         } else {
1760                 rdma_ah_set_ah_flags(rdma_attr, 0);
1761         }
1762         rdma_ah_set_dlid(rdma_attr, uverb_attr->dlid);
1763         rdma_ah_set_sl(rdma_attr, uverb_attr->sl);
1764         rdma_ah_set_path_bits(rdma_attr, uverb_attr->src_path_bits);
1765         rdma_ah_set_static_rate(rdma_attr, uverb_attr->static_rate);
1766         rdma_ah_set_port_num(rdma_attr, uverb_attr->port_num);
1767         rdma_ah_set_make_grd(rdma_attr, false);
1768 }
1769
1770 static int modify_qp(struct uverbs_attr_bundle *attrs,
1771                      struct ib_uverbs_ex_modify_qp *cmd)
1772 {
1773         struct ib_qp_attr *attr;
1774         struct ib_qp *qp;
1775         int ret;
1776
1777         attr = kzalloc(sizeof(*attr), GFP_KERNEL);
1778         if (!attr)
1779                 return -ENOMEM;
1780
1781         qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd->base.qp_handle,
1782                                attrs);
1783         if (!qp) {
1784                 ret = -EINVAL;
1785                 goto out;
1786         }
1787
1788         if ((cmd->base.attr_mask & IB_QP_PORT) &&
1789             !rdma_is_port_valid(qp->device, cmd->base.port_num)) {
1790                 ret = -EINVAL;
1791                 goto release_qp;
1792         }
1793
1794         if ((cmd->base.attr_mask & IB_QP_AV)) {
1795                 if (!rdma_is_port_valid(qp->device, cmd->base.dest.port_num)) {
1796                         ret = -EINVAL;
1797                         goto release_qp;
1798                 }
1799
1800                 if (cmd->base.attr_mask & IB_QP_STATE &&
1801                     cmd->base.qp_state == IB_QPS_RTR) {
1802                 /* We are in INIT->RTR TRANSITION (if we are not,
1803                  * this transition will be rejected in subsequent checks).
1804                  * In the INIT->RTR transition, we cannot have IB_QP_PORT set,
1805                  * but the IB_QP_STATE flag is required.
1806                  *
1807                  * Since kernel 3.14 (commit dbf727de7440), the uverbs driver,
1808                  * when IB_QP_AV is set, has required inclusion of a valid
1809                  * port number in the primary AV. (AVs are created and handled
1810                  * differently for infiniband and ethernet (RoCE) ports).
1811                  *
1812                  * Check the port number included in the primary AV against
1813                  * the port number in the qp struct, which was set (and saved)
1814                  * in the RST->INIT transition.
1815                  */
1816                         if (cmd->base.dest.port_num != qp->real_qp->port) {
1817                                 ret = -EINVAL;
1818                                 goto release_qp;
1819                         }
1820                 } else {
1821                 /* We are in SQD->SQD. (If we are not, this transition will
1822                  * be rejected later in the verbs layer checks).
1823                  * Check for both IB_QP_PORT and IB_QP_AV, these can be set
1824                  * together in the SQD->SQD transition.
1825                  *
1826                  * If only IP_QP_AV was set, add in IB_QP_PORT as well (the
1827                  * verbs layer driver does not track primary port changes
1828                  * resulting from path migration. Thus, in SQD, if the primary
1829                  * AV is modified, the primary port should also be modified).
1830                  *
1831                  * Note that in this transition, the IB_QP_STATE flag
1832                  * is not allowed.
1833                  */
1834                         if (((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT))
1835                              == (IB_QP_AV | IB_QP_PORT)) &&
1836                             cmd->base.port_num != cmd->base.dest.port_num) {
1837                                 ret = -EINVAL;
1838                                 goto release_qp;
1839                         }
1840                         if ((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT))
1841                             == IB_QP_AV) {
1842                                 cmd->base.attr_mask |= IB_QP_PORT;
1843                                 cmd->base.port_num = cmd->base.dest.port_num;
1844                         }
1845                 }
1846         }
1847
1848         if ((cmd->base.attr_mask & IB_QP_ALT_PATH) &&
1849             (!rdma_is_port_valid(qp->device, cmd->base.alt_port_num) ||
1850             !rdma_is_port_valid(qp->device, cmd->base.alt_dest.port_num) ||
1851             cmd->base.alt_port_num != cmd->base.alt_dest.port_num)) {
1852                 ret = -EINVAL;
1853                 goto release_qp;
1854         }
1855
1856         if ((cmd->base.attr_mask & IB_QP_CUR_STATE &&
1857             cmd->base.cur_qp_state > IB_QPS_ERR) ||
1858             (cmd->base.attr_mask & IB_QP_STATE &&
1859             cmd->base.qp_state > IB_QPS_ERR)) {
1860                 ret = -EINVAL;
1861                 goto release_qp;
1862         }
1863
1864         if (cmd->base.attr_mask & IB_QP_STATE)
1865                 attr->qp_state = cmd->base.qp_state;
1866         if (cmd->base.attr_mask & IB_QP_CUR_STATE)
1867                 attr->cur_qp_state = cmd->base.cur_qp_state;
1868         if (cmd->base.attr_mask & IB_QP_PATH_MTU)
1869                 attr->path_mtu = cmd->base.path_mtu;
1870         if (cmd->base.attr_mask & IB_QP_PATH_MIG_STATE)
1871                 attr->path_mig_state = cmd->base.path_mig_state;
1872         if (cmd->base.attr_mask & IB_QP_QKEY)
1873                 attr->qkey = cmd->base.qkey;
1874         if (cmd->base.attr_mask & IB_QP_RQ_PSN)
1875                 attr->rq_psn = cmd->base.rq_psn;
1876         if (cmd->base.attr_mask & IB_QP_SQ_PSN)
1877                 attr->sq_psn = cmd->base.sq_psn;
1878         if (cmd->base.attr_mask & IB_QP_DEST_QPN)
1879                 attr->dest_qp_num = cmd->base.dest_qp_num;
1880         if (cmd->base.attr_mask & IB_QP_ACCESS_FLAGS)
1881                 attr->qp_access_flags = cmd->base.qp_access_flags;
1882         if (cmd->base.attr_mask & IB_QP_PKEY_INDEX)
1883                 attr->pkey_index = cmd->base.pkey_index;
1884         if (cmd->base.attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
1885                 attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify;
1886         if (cmd->base.attr_mask & IB_QP_MAX_QP_RD_ATOMIC)
1887                 attr->max_rd_atomic = cmd->base.max_rd_atomic;
1888         if (cmd->base.attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
1889                 attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic;
1890         if (cmd->base.attr_mask & IB_QP_MIN_RNR_TIMER)
1891                 attr->min_rnr_timer = cmd->base.min_rnr_timer;
1892         if (cmd->base.attr_mask & IB_QP_PORT)
1893                 attr->port_num = cmd->base.port_num;
1894         if (cmd->base.attr_mask & IB_QP_TIMEOUT)
1895                 attr->timeout = cmd->base.timeout;
1896         if (cmd->base.attr_mask & IB_QP_RETRY_CNT)
1897                 attr->retry_cnt = cmd->base.retry_cnt;
1898         if (cmd->base.attr_mask & IB_QP_RNR_RETRY)
1899                 attr->rnr_retry = cmd->base.rnr_retry;
1900         if (cmd->base.attr_mask & IB_QP_ALT_PATH) {
1901                 attr->alt_port_num = cmd->base.alt_port_num;
1902                 attr->alt_timeout = cmd->base.alt_timeout;
1903                 attr->alt_pkey_index = cmd->base.alt_pkey_index;
1904         }
1905         if (cmd->base.attr_mask & IB_QP_RATE_LIMIT)
1906                 attr->rate_limit = cmd->rate_limit;
1907
1908         if (cmd->base.attr_mask & IB_QP_AV)
1909                 copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr,
1910                                          &cmd->base.dest);
1911
1912         if (cmd->base.attr_mask & IB_QP_ALT_PATH)
1913                 copy_ah_attr_from_uverbs(qp->device, &attr->alt_ah_attr,
1914                                          &cmd->base.alt_dest);
1915
1916         ret = ib_modify_qp_with_udata(qp, attr,
1917                                       modify_qp_mask(qp->qp_type,
1918                                                      cmd->base.attr_mask),
1919                                       &attrs->driver_udata);
1920
1921 release_qp:
1922         uobj_put_obj_read(qp);
1923 out:
1924         kfree(attr);
1925
1926         return ret;
1927 }
1928
1929 static int ib_uverbs_modify_qp(struct uverbs_attr_bundle *attrs)
1930 {
1931         struct ib_uverbs_ex_modify_qp cmd;
1932         int ret;
1933
1934         ret = uverbs_request(attrs, &cmd.base, sizeof(cmd.base));
1935         if (ret)
1936                 return ret;
1937
1938         if (cmd.base.attr_mask &
1939             ~((IB_USER_LEGACY_LAST_QP_ATTR_MASK << 1) - 1))
1940                 return -EOPNOTSUPP;
1941
1942         return modify_qp(attrs, &cmd);
1943 }
1944
1945 static int ib_uverbs_ex_modify_qp(struct uverbs_attr_bundle *attrs)
1946 {
1947         struct ib_uverbs_ex_modify_qp cmd;
1948         struct ib_uverbs_ex_modify_qp_resp resp = {
1949                 .response_length = uverbs_response_length(attrs, sizeof(resp))
1950         };
1951         int ret;
1952
1953         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1954         if (ret)
1955                 return ret;
1956
1957         /*
1958          * Last bit is reserved for extending the attr_mask by
1959          * using another field.
1960          */
1961         BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1 << 31));
1962
1963         if (cmd.base.attr_mask &
1964             ~((IB_USER_LAST_QP_ATTR_MASK << 1) - 1))
1965                 return -EOPNOTSUPP;
1966
1967         ret = modify_qp(attrs, &cmd);
1968         if (ret)
1969                 return ret;
1970
1971         return uverbs_response(attrs, &resp, sizeof(resp));
1972 }
1973
1974 static int ib_uverbs_destroy_qp(struct uverbs_attr_bundle *attrs)
1975 {
1976         struct ib_uverbs_destroy_qp      cmd;
1977         struct ib_uverbs_destroy_qp_resp resp;
1978         struct ib_uobject               *uobj;
1979         struct ib_uqp_object            *obj;
1980         int ret;
1981
1982         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1983         if (ret)
1984                 return ret;
1985
1986         uobj = uobj_get_destroy(UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
1987         if (IS_ERR(uobj))
1988                 return PTR_ERR(uobj);
1989
1990         obj = container_of(uobj, struct ib_uqp_object, uevent.uobject);
1991         memset(&resp, 0, sizeof(resp));
1992         resp.events_reported = obj->uevent.events_reported;
1993
1994         uobj_put_destroy(uobj);
1995
1996         return uverbs_response(attrs, &resp, sizeof(resp));
1997 }
1998
1999 static void *alloc_wr(size_t wr_size, __u32 num_sge)
2000 {
2001         if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof (struct ib_sge))) /
2002                        sizeof (struct ib_sge))
2003                 return NULL;
2004
2005         return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) +
2006                          num_sge * sizeof (struct ib_sge), GFP_KERNEL);
2007 }
2008
2009 static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs)
2010 {
2011         struct ib_uverbs_post_send      cmd;
2012         struct ib_uverbs_post_send_resp resp;
2013         struct ib_uverbs_send_wr       *user_wr;
2014         struct ib_send_wr              *wr = NULL, *last, *next;
2015         const struct ib_send_wr        *bad_wr;
2016         struct ib_qp                   *qp;
2017         int                             i, sg_ind;
2018         int                             is_ud;
2019         int ret, ret2;
2020         size_t                          next_size;
2021         const struct ib_sge __user *sgls;
2022         const void __user *wqes;
2023         struct uverbs_req_iter iter;
2024
2025         ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2026         if (ret)
2027                 return ret;
2028         wqes = uverbs_request_next_ptr(&iter, cmd.wqe_size * cmd.wr_count);
2029         if (IS_ERR(wqes))
2030                 return PTR_ERR(wqes);
2031         sgls = uverbs_request_next_ptr(
2032                 &iter, cmd.sge_count * sizeof(struct ib_uverbs_sge));
2033         if (IS_ERR(sgls))
2034                 return PTR_ERR(sgls);
2035         ret = uverbs_request_finish(&iter);
2036         if (ret)
2037                 return ret;
2038
2039         user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
2040         if (!user_wr)
2041                 return -ENOMEM;
2042
2043         qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2044         if (!qp) {
2045                 ret = -EINVAL;
2046                 goto out;
2047         }
2048
2049         is_ud = qp->qp_type == IB_QPT_UD;
2050         sg_ind = 0;
2051         last = NULL;
2052         for (i = 0; i < cmd.wr_count; ++i) {
2053                 if (copy_from_user(user_wr, wqes + i * cmd.wqe_size,
2054                                    cmd.wqe_size)) {
2055                         ret = -EFAULT;
2056                         goto out_put;
2057                 }
2058
2059                 if (user_wr->num_sge + sg_ind > cmd.sge_count) {
2060                         ret = -EINVAL;
2061                         goto out_put;
2062                 }
2063
2064                 if (is_ud) {
2065                         struct ib_ud_wr *ud;
2066
2067                         if (user_wr->opcode != IB_WR_SEND &&
2068                             user_wr->opcode != IB_WR_SEND_WITH_IMM) {
2069                                 ret = -EINVAL;
2070                                 goto out_put;
2071                         }
2072
2073                         next_size = sizeof(*ud);
2074                         ud = alloc_wr(next_size, user_wr->num_sge);
2075                         if (!ud) {
2076                                 ret = -ENOMEM;
2077                                 goto out_put;
2078                         }
2079
2080                         ud->ah = uobj_get_obj_read(ah, UVERBS_OBJECT_AH,
2081                                                    user_wr->wr.ud.ah, attrs);
2082                         if (!ud->ah) {
2083                                 kfree(ud);
2084                                 ret = -EINVAL;
2085                                 goto out_put;
2086                         }
2087                         ud->remote_qpn = user_wr->wr.ud.remote_qpn;
2088                         ud->remote_qkey = user_wr->wr.ud.remote_qkey;
2089
2090                         next = &ud->wr;
2091                 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
2092                            user_wr->opcode == IB_WR_RDMA_WRITE ||
2093                            user_wr->opcode == IB_WR_RDMA_READ) {
2094                         struct ib_rdma_wr *rdma;
2095
2096                         next_size = sizeof(*rdma);
2097                         rdma = alloc_wr(next_size, user_wr->num_sge);
2098                         if (!rdma) {
2099                                 ret = -ENOMEM;
2100                                 goto out_put;
2101                         }
2102
2103                         rdma->remote_addr = user_wr->wr.rdma.remote_addr;
2104                         rdma->rkey = user_wr->wr.rdma.rkey;
2105
2106                         next = &rdma->wr;
2107                 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP ||
2108                            user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) {
2109                         struct ib_atomic_wr *atomic;
2110
2111                         next_size = sizeof(*atomic);
2112                         atomic = alloc_wr(next_size, user_wr->num_sge);
2113                         if (!atomic) {
2114                                 ret = -ENOMEM;
2115                                 goto out_put;
2116                         }
2117
2118                         atomic->remote_addr = user_wr->wr.atomic.remote_addr;
2119                         atomic->compare_add = user_wr->wr.atomic.compare_add;
2120                         atomic->swap = user_wr->wr.atomic.swap;
2121                         atomic->rkey = user_wr->wr.atomic.rkey;
2122
2123                         next = &atomic->wr;
2124                 } else if (user_wr->opcode == IB_WR_SEND ||
2125                            user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2126                            user_wr->opcode == IB_WR_SEND_WITH_INV) {
2127                         next_size = sizeof(*next);
2128                         next = alloc_wr(next_size, user_wr->num_sge);
2129                         if (!next) {
2130                                 ret = -ENOMEM;
2131                                 goto out_put;
2132                         }
2133                 } else {
2134                         ret = -EINVAL;
2135                         goto out_put;
2136                 }
2137
2138                 if (user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2139                     user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) {
2140                         next->ex.imm_data =
2141                                         (__be32 __force) user_wr->ex.imm_data;
2142                 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) {
2143                         next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey;
2144                 }
2145
2146                 if (!last)
2147                         wr = next;
2148                 else
2149                         last->next = next;
2150                 last = next;
2151
2152                 next->next       = NULL;
2153                 next->wr_id      = user_wr->wr_id;
2154                 next->num_sge    = user_wr->num_sge;
2155                 next->opcode     = user_wr->opcode;
2156                 next->send_flags = user_wr->send_flags;
2157
2158                 if (next->num_sge) {
2159                         next->sg_list = (void *) next +
2160                                 ALIGN(next_size, sizeof(struct ib_sge));
2161                         if (copy_from_user(next->sg_list, sgls + sg_ind,
2162                                            next->num_sge *
2163                                                    sizeof(struct ib_sge))) {
2164                                 ret = -EFAULT;
2165                                 goto out_put;
2166                         }
2167                         sg_ind += next->num_sge;
2168                 } else
2169                         next->sg_list = NULL;
2170         }
2171
2172         resp.bad_wr = 0;
2173         ret = qp->device->ops.post_send(qp->real_qp, wr, &bad_wr);
2174         if (ret)
2175                 for (next = wr; next; next = next->next) {
2176                         ++resp.bad_wr;
2177                         if (next == bad_wr)
2178                                 break;
2179                 }
2180
2181         ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2182         if (ret2)
2183                 ret = ret2;
2184
2185 out_put:
2186         uobj_put_obj_read(qp);
2187
2188         while (wr) {
2189                 if (is_ud && ud_wr(wr)->ah)
2190                         uobj_put_obj_read(ud_wr(wr)->ah);
2191                 next = wr->next;
2192                 kfree(wr);
2193                 wr = next;
2194         }
2195
2196 out:
2197         kfree(user_wr);
2198
2199         return ret;
2200 }
2201
2202 static struct ib_recv_wr *
2203 ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count,
2204                           u32 wqe_size, u32 sge_count)
2205 {
2206         struct ib_uverbs_recv_wr *user_wr;
2207         struct ib_recv_wr        *wr = NULL, *last, *next;
2208         int                       sg_ind;
2209         int                       i;
2210         int                       ret;
2211         const struct ib_sge __user *sgls;
2212         const void __user *wqes;
2213
2214         if (wqe_size < sizeof (struct ib_uverbs_recv_wr))
2215                 return ERR_PTR(-EINVAL);
2216
2217         wqes = uverbs_request_next_ptr(iter, wqe_size * wr_count);
2218         if (IS_ERR(wqes))
2219                 return ERR_CAST(wqes);
2220         sgls = uverbs_request_next_ptr(
2221                 iter, sge_count * sizeof(struct ib_uverbs_sge));
2222         if (IS_ERR(sgls))
2223                 return ERR_CAST(sgls);
2224         ret = uverbs_request_finish(iter);
2225         if (ret)
2226                 return ERR_PTR(ret);
2227
2228         user_wr = kmalloc(wqe_size, GFP_KERNEL);
2229         if (!user_wr)
2230                 return ERR_PTR(-ENOMEM);
2231
2232         sg_ind = 0;
2233         last = NULL;
2234         for (i = 0; i < wr_count; ++i) {
2235                 if (copy_from_user(user_wr, wqes + i * wqe_size,
2236                                    wqe_size)) {
2237                         ret = -EFAULT;
2238                         goto err;
2239                 }
2240
2241                 if (user_wr->num_sge + sg_ind > sge_count) {
2242                         ret = -EINVAL;
2243                         goto err;
2244                 }
2245
2246                 if (user_wr->num_sge >=
2247                     (U32_MAX - ALIGN(sizeof *next, sizeof (struct ib_sge))) /
2248                     sizeof (struct ib_sge)) {
2249                         ret = -EINVAL;
2250                         goto err;
2251                 }
2252
2253                 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
2254                                user_wr->num_sge * sizeof (struct ib_sge),
2255                                GFP_KERNEL);
2256                 if (!next) {
2257                         ret = -ENOMEM;
2258                         goto err;
2259                 }
2260
2261                 if (!last)
2262                         wr = next;
2263                 else
2264                         last->next = next;
2265                 last = next;
2266
2267                 next->next       = NULL;
2268                 next->wr_id      = user_wr->wr_id;
2269                 next->num_sge    = user_wr->num_sge;
2270
2271                 if (next->num_sge) {
2272                         next->sg_list = (void *) next +
2273                                 ALIGN(sizeof *next, sizeof (struct ib_sge));
2274                         if (copy_from_user(next->sg_list, sgls + sg_ind,
2275                                            next->num_sge *
2276                                                    sizeof(struct ib_sge))) {
2277                                 ret = -EFAULT;
2278                                 goto err;
2279                         }
2280                         sg_ind += next->num_sge;
2281                 } else
2282                         next->sg_list = NULL;
2283         }
2284
2285         kfree(user_wr);
2286         return wr;
2287
2288 err:
2289         kfree(user_wr);
2290
2291         while (wr) {
2292                 next = wr->next;
2293                 kfree(wr);
2294                 wr = next;
2295         }
2296
2297         return ERR_PTR(ret);
2298 }
2299
2300 static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs)
2301 {
2302         struct ib_uverbs_post_recv      cmd;
2303         struct ib_uverbs_post_recv_resp resp;
2304         struct ib_recv_wr              *wr, *next;
2305         const struct ib_recv_wr        *bad_wr;
2306         struct ib_qp                   *qp;
2307         int ret, ret2;
2308         struct uverbs_req_iter iter;
2309
2310         ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2311         if (ret)
2312                 return ret;
2313
2314         wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size,
2315                                        cmd.sge_count);
2316         if (IS_ERR(wr))
2317                 return PTR_ERR(wr);
2318
2319         qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2320         if (!qp) {
2321                 ret = -EINVAL;
2322                 goto out;
2323         }
2324
2325         resp.bad_wr = 0;
2326         ret = qp->device->ops.post_recv(qp->real_qp, wr, &bad_wr);
2327
2328         uobj_put_obj_read(qp);
2329         if (ret) {
2330                 for (next = wr; next; next = next->next) {
2331                         ++resp.bad_wr;
2332                         if (next == bad_wr)
2333                                 break;
2334                 }
2335         }
2336
2337         ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2338         if (ret2)
2339                 ret = ret2;
2340 out:
2341         while (wr) {
2342                 next = wr->next;
2343                 kfree(wr);
2344                 wr = next;
2345         }
2346
2347         return ret;
2348 }
2349
2350 static int ib_uverbs_post_srq_recv(struct uverbs_attr_bundle *attrs)
2351 {
2352         struct ib_uverbs_post_srq_recv      cmd;
2353         struct ib_uverbs_post_srq_recv_resp resp;
2354         struct ib_recv_wr                  *wr, *next;
2355         const struct ib_recv_wr            *bad_wr;
2356         struct ib_srq                      *srq;
2357         int ret, ret2;
2358         struct uverbs_req_iter iter;
2359
2360         ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2361         if (ret)
2362                 return ret;
2363
2364         wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size,
2365                                        cmd.sge_count);
2366         if (IS_ERR(wr))
2367                 return PTR_ERR(wr);
2368
2369         srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
2370         if (!srq) {
2371                 ret = -EINVAL;
2372                 goto out;
2373         }
2374
2375         resp.bad_wr = 0;
2376         ret = srq->device->ops.post_srq_recv(srq, wr, &bad_wr);
2377
2378         uobj_put_obj_read(srq);
2379
2380         if (ret)
2381                 for (next = wr; next; next = next->next) {
2382                         ++resp.bad_wr;
2383                         if (next == bad_wr)
2384                                 break;
2385                 }
2386
2387         ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2388         if (ret2)
2389                 ret = ret2;
2390
2391 out:
2392         while (wr) {
2393                 next = wr->next;
2394                 kfree(wr);
2395                 wr = next;
2396         }
2397
2398         return ret;
2399 }
2400
2401 static int ib_uverbs_create_ah(struct uverbs_attr_bundle *attrs)
2402 {
2403         struct ib_uverbs_create_ah       cmd;
2404         struct ib_uverbs_create_ah_resp  resp;
2405         struct ib_uobject               *uobj;
2406         struct ib_pd                    *pd;
2407         struct ib_ah                    *ah;
2408         struct rdma_ah_attr             attr = {};
2409         int ret;
2410         struct ib_device *ib_dev;
2411
2412         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2413         if (ret)
2414                 return ret;
2415
2416         uobj = uobj_alloc(UVERBS_OBJECT_AH, attrs, &ib_dev);
2417         if (IS_ERR(uobj))
2418                 return PTR_ERR(uobj);
2419
2420         if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num)) {
2421                 ret = -EINVAL;
2422                 goto err;
2423         }
2424
2425         pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
2426         if (!pd) {
2427                 ret = -EINVAL;
2428                 goto err;
2429         }
2430
2431         attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num);
2432         rdma_ah_set_make_grd(&attr, false);
2433         rdma_ah_set_dlid(&attr, cmd.attr.dlid);
2434         rdma_ah_set_sl(&attr, cmd.attr.sl);
2435         rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits);
2436         rdma_ah_set_static_rate(&attr, cmd.attr.static_rate);
2437         rdma_ah_set_port_num(&attr, cmd.attr.port_num);
2438
2439         if (cmd.attr.is_global) {
2440                 rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label,
2441                                 cmd.attr.grh.sgid_index,
2442                                 cmd.attr.grh.hop_limit,
2443                                 cmd.attr.grh.traffic_class);
2444                 rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid);
2445         } else {
2446                 rdma_ah_set_ah_flags(&attr, 0);
2447         }
2448
2449         ah = rdma_create_user_ah(pd, &attr, &attrs->driver_udata);
2450         if (IS_ERR(ah)) {
2451                 ret = PTR_ERR(ah);
2452                 goto err_put;
2453         }
2454
2455         ah->uobject  = uobj;
2456         uobj->user_handle = cmd.user_handle;
2457         uobj->object = ah;
2458
2459         resp.ah_handle = uobj->id;
2460
2461         ret = uverbs_response(attrs, &resp, sizeof(resp));
2462         if (ret)
2463                 goto err_copy;
2464
2465         uobj_put_obj_read(pd);
2466         return uobj_alloc_commit(uobj, attrs);
2467
2468 err_copy:
2469         rdma_destroy_ah_user(ah, RDMA_DESTROY_AH_SLEEPABLE,
2470                              uverbs_get_cleared_udata(attrs));
2471
2472 err_put:
2473         uobj_put_obj_read(pd);
2474
2475 err:
2476         uobj_alloc_abort(uobj, attrs);
2477         return ret;
2478 }
2479
2480 static int ib_uverbs_destroy_ah(struct uverbs_attr_bundle *attrs)
2481 {
2482         struct ib_uverbs_destroy_ah cmd;
2483         int ret;
2484
2485         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2486         if (ret)
2487                 return ret;
2488
2489         return uobj_perform_destroy(UVERBS_OBJECT_AH, cmd.ah_handle, attrs);
2490 }
2491
2492 static int ib_uverbs_attach_mcast(struct uverbs_attr_bundle *attrs)
2493 {
2494         struct ib_uverbs_attach_mcast cmd;
2495         struct ib_qp                 *qp;
2496         struct ib_uqp_object         *obj;
2497         struct ib_uverbs_mcast_entry *mcast;
2498         int                           ret;
2499
2500         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2501         if (ret)
2502                 return ret;
2503
2504         qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2505         if (!qp)
2506                 return -EINVAL;
2507
2508         obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2509
2510         mutex_lock(&obj->mcast_lock);
2511         list_for_each_entry(mcast, &obj->mcast_list, list)
2512                 if (cmd.mlid == mcast->lid &&
2513                     !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2514                         ret = 0;
2515                         goto out_put;
2516                 }
2517
2518         mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
2519         if (!mcast) {
2520                 ret = -ENOMEM;
2521                 goto out_put;
2522         }
2523
2524         mcast->lid = cmd.mlid;
2525         memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
2526
2527         ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
2528         if (!ret)
2529                 list_add_tail(&mcast->list, &obj->mcast_list);
2530         else
2531                 kfree(mcast);
2532
2533 out_put:
2534         mutex_unlock(&obj->mcast_lock);
2535         uobj_put_obj_read(qp);
2536
2537         return ret;
2538 }
2539
2540 static int ib_uverbs_detach_mcast(struct uverbs_attr_bundle *attrs)
2541 {
2542         struct ib_uverbs_detach_mcast cmd;
2543         struct ib_uqp_object         *obj;
2544         struct ib_qp                 *qp;
2545         struct ib_uverbs_mcast_entry *mcast;
2546         int                           ret;
2547         bool                          found = false;
2548
2549         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2550         if (ret)
2551                 return ret;
2552
2553         qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2554         if (!qp)
2555                 return -EINVAL;
2556
2557         obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2558         mutex_lock(&obj->mcast_lock);
2559
2560         list_for_each_entry(mcast, &obj->mcast_list, list)
2561                 if (cmd.mlid == mcast->lid &&
2562                     !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2563                         list_del(&mcast->list);
2564                         kfree(mcast);
2565                         found = true;
2566                         break;
2567                 }
2568
2569         if (!found) {
2570                 ret = -EINVAL;
2571                 goto out_put;
2572         }
2573
2574         ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid);
2575
2576 out_put:
2577         mutex_unlock(&obj->mcast_lock);
2578         uobj_put_obj_read(qp);
2579         return ret;
2580 }
2581
2582 struct ib_uflow_resources *flow_resources_alloc(size_t num_specs)
2583 {
2584         struct ib_uflow_resources *resources;
2585
2586         resources = kzalloc(sizeof(*resources), GFP_KERNEL);
2587
2588         if (!resources)
2589                 return NULL;
2590
2591         if (!num_specs)
2592                 goto out;
2593
2594         resources->counters =
2595                 kcalloc(num_specs, sizeof(*resources->counters), GFP_KERNEL);
2596         resources->collection =
2597                 kcalloc(num_specs, sizeof(*resources->collection), GFP_KERNEL);
2598
2599         if (!resources->counters || !resources->collection)
2600                 goto err;
2601
2602 out:
2603         resources->max = num_specs;
2604         return resources;
2605
2606 err:
2607         kfree(resources->counters);
2608         kfree(resources);
2609
2610         return NULL;
2611 }
2612 EXPORT_SYMBOL(flow_resources_alloc);
2613
2614 void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res)
2615 {
2616         unsigned int i;
2617
2618         if (!uflow_res)
2619                 return;
2620
2621         for (i = 0; i < uflow_res->collection_num; i++)
2622                 atomic_dec(&uflow_res->collection[i]->usecnt);
2623
2624         for (i = 0; i < uflow_res->counters_num; i++)
2625                 atomic_dec(&uflow_res->counters[i]->usecnt);
2626
2627         kfree(uflow_res->collection);
2628         kfree(uflow_res->counters);
2629         kfree(uflow_res);
2630 }
2631 EXPORT_SYMBOL(ib_uverbs_flow_resources_free);
2632
2633 void flow_resources_add(struct ib_uflow_resources *uflow_res,
2634                         enum ib_flow_spec_type type,
2635                         void *ibobj)
2636 {
2637         WARN_ON(uflow_res->num >= uflow_res->max);
2638
2639         switch (type) {
2640         case IB_FLOW_SPEC_ACTION_HANDLE:
2641                 atomic_inc(&((struct ib_flow_action *)ibobj)->usecnt);
2642                 uflow_res->collection[uflow_res->collection_num++] =
2643                         (struct ib_flow_action *)ibobj;
2644                 break;
2645         case IB_FLOW_SPEC_ACTION_COUNT:
2646                 atomic_inc(&((struct ib_counters *)ibobj)->usecnt);
2647                 uflow_res->counters[uflow_res->counters_num++] =
2648                         (struct ib_counters *)ibobj;
2649                 break;
2650         default:
2651                 WARN_ON(1);
2652         }
2653
2654         uflow_res->num++;
2655 }
2656 EXPORT_SYMBOL(flow_resources_add);
2657
2658 static int kern_spec_to_ib_spec_action(struct uverbs_attr_bundle *attrs,
2659                                        struct ib_uverbs_flow_spec *kern_spec,
2660                                        union ib_flow_spec *ib_spec,
2661                                        struct ib_uflow_resources *uflow_res)
2662 {
2663         ib_spec->type = kern_spec->type;
2664         switch (ib_spec->type) {
2665         case IB_FLOW_SPEC_ACTION_TAG:
2666                 if (kern_spec->flow_tag.size !=
2667                     sizeof(struct ib_uverbs_flow_spec_action_tag))
2668                         return -EINVAL;
2669
2670                 ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag);
2671                 ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id;
2672                 break;
2673         case IB_FLOW_SPEC_ACTION_DROP:
2674                 if (kern_spec->drop.size !=
2675                     sizeof(struct ib_uverbs_flow_spec_action_drop))
2676                         return -EINVAL;
2677
2678                 ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop);
2679                 break;
2680         case IB_FLOW_SPEC_ACTION_HANDLE:
2681                 if (kern_spec->action.size !=
2682                     sizeof(struct ib_uverbs_flow_spec_action_handle))
2683                         return -EOPNOTSUPP;
2684                 ib_spec->action.act = uobj_get_obj_read(flow_action,
2685                                                         UVERBS_OBJECT_FLOW_ACTION,
2686                                                         kern_spec->action.handle,
2687                                                         attrs);
2688                 if (!ib_spec->action.act)
2689                         return -EINVAL;
2690                 ib_spec->action.size =
2691                         sizeof(struct ib_flow_spec_action_handle);
2692                 flow_resources_add(uflow_res,
2693                                    IB_FLOW_SPEC_ACTION_HANDLE,
2694                                    ib_spec->action.act);
2695                 uobj_put_obj_read(ib_spec->action.act);
2696                 break;
2697         case IB_FLOW_SPEC_ACTION_COUNT:
2698                 if (kern_spec->flow_count.size !=
2699                         sizeof(struct ib_uverbs_flow_spec_action_count))
2700                         return -EINVAL;
2701                 ib_spec->flow_count.counters =
2702                         uobj_get_obj_read(counters,
2703                                           UVERBS_OBJECT_COUNTERS,
2704                                           kern_spec->flow_count.handle,
2705                                           attrs);
2706                 if (!ib_spec->flow_count.counters)
2707                         return -EINVAL;
2708                 ib_spec->flow_count.size =
2709                                 sizeof(struct ib_flow_spec_action_count);
2710                 flow_resources_add(uflow_res,
2711                                    IB_FLOW_SPEC_ACTION_COUNT,
2712                                    ib_spec->flow_count.counters);
2713                 uobj_put_obj_read(ib_spec->flow_count.counters);
2714                 break;
2715         default:
2716                 return -EINVAL;
2717         }
2718         return 0;
2719 }
2720
2721 static size_t kern_spec_filter_sz(const struct ib_uverbs_flow_spec_hdr *spec)
2722 {
2723         /* Returns user space filter size, includes padding */
2724         return (spec->size - sizeof(struct ib_uverbs_flow_spec_hdr)) / 2;
2725 }
2726
2727 static ssize_t spec_filter_size(const void *kern_spec_filter, u16 kern_filter_size,
2728                                 u16 ib_real_filter_sz)
2729 {
2730         /*
2731          * User space filter structures must be 64 bit aligned, otherwise this
2732          * may pass, but we won't handle additional new attributes.
2733          */
2734
2735         if (kern_filter_size > ib_real_filter_sz) {
2736                 if (memchr_inv(kern_spec_filter +
2737                                ib_real_filter_sz, 0,
2738                                kern_filter_size - ib_real_filter_sz))
2739                         return -EINVAL;
2740                 return ib_real_filter_sz;
2741         }
2742         return kern_filter_size;
2743 }
2744
2745 int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type,
2746                                           const void *kern_spec_mask,
2747                                           const void *kern_spec_val,
2748                                           size_t kern_filter_sz,
2749                                           union ib_flow_spec *ib_spec)
2750 {
2751         ssize_t actual_filter_sz;
2752         ssize_t ib_filter_sz;
2753
2754         /* User flow spec size must be aligned to 4 bytes */
2755         if (kern_filter_sz != ALIGN(kern_filter_sz, 4))
2756                 return -EINVAL;
2757
2758         ib_spec->type = type;
2759
2760         if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL))
2761                 return -EINVAL;
2762
2763         switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
2764         case IB_FLOW_SPEC_ETH:
2765                 ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz);
2766                 actual_filter_sz = spec_filter_size(kern_spec_mask,
2767                                                     kern_filter_sz,
2768                                                     ib_filter_sz);
2769                 if (actual_filter_sz <= 0)
2770                         return -EINVAL;
2771                 ib_spec->size = sizeof(struct ib_flow_spec_eth);
2772                 memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz);
2773                 memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz);
2774                 break;
2775         case IB_FLOW_SPEC_IPV4:
2776                 ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz);
2777                 actual_filter_sz = spec_filter_size(kern_spec_mask,
2778                                                     kern_filter_sz,
2779                                                     ib_filter_sz);
2780                 if (actual_filter_sz <= 0)
2781                         return -EINVAL;
2782                 ib_spec->size = sizeof(struct ib_flow_spec_ipv4);
2783                 memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz);
2784                 memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz);
2785                 break;
2786         case IB_FLOW_SPEC_IPV6:
2787                 ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz);
2788                 actual_filter_sz = spec_filter_size(kern_spec_mask,
2789                                                     kern_filter_sz,
2790                                                     ib_filter_sz);
2791                 if (actual_filter_sz <= 0)
2792                         return -EINVAL;
2793                 ib_spec->size = sizeof(struct ib_flow_spec_ipv6);
2794                 memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz);
2795                 memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz);
2796
2797                 if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) ||
2798                     (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20))
2799                         return -EINVAL;
2800                 break;
2801         case IB_FLOW_SPEC_TCP:
2802         case IB_FLOW_SPEC_UDP:
2803                 ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz);
2804                 actual_filter_sz = spec_filter_size(kern_spec_mask,
2805                                                     kern_filter_sz,
2806                                                     ib_filter_sz);
2807                 if (actual_filter_sz <= 0)
2808                         return -EINVAL;
2809                 ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp);
2810                 memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz);
2811                 memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz);
2812                 break;
2813         case IB_FLOW_SPEC_VXLAN_TUNNEL:
2814                 ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz);
2815                 actual_filter_sz = spec_filter_size(kern_spec_mask,
2816                                                     kern_filter_sz,
2817                                                     ib_filter_sz);
2818                 if (actual_filter_sz <= 0)
2819                         return -EINVAL;
2820                 ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel);
2821                 memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz);
2822                 memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz);
2823
2824                 if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) ||
2825                     (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24))
2826                         return -EINVAL;
2827                 break;
2828         case IB_FLOW_SPEC_ESP:
2829                 ib_filter_sz = offsetof(struct ib_flow_esp_filter, real_sz);
2830                 actual_filter_sz = spec_filter_size(kern_spec_mask,
2831                                                     kern_filter_sz,
2832                                                     ib_filter_sz);
2833                 if (actual_filter_sz <= 0)
2834                         return -EINVAL;
2835                 ib_spec->esp.size = sizeof(struct ib_flow_spec_esp);
2836                 memcpy(&ib_spec->esp.val, kern_spec_val, actual_filter_sz);
2837                 memcpy(&ib_spec->esp.mask, kern_spec_mask, actual_filter_sz);
2838                 break;
2839         case IB_FLOW_SPEC_GRE:
2840                 ib_filter_sz = offsetof(struct ib_flow_gre_filter, real_sz);
2841                 actual_filter_sz = spec_filter_size(kern_spec_mask,
2842                                                     kern_filter_sz,
2843                                                     ib_filter_sz);
2844                 if (actual_filter_sz <= 0)
2845                         return -EINVAL;
2846                 ib_spec->gre.size = sizeof(struct ib_flow_spec_gre);
2847                 memcpy(&ib_spec->gre.val, kern_spec_val, actual_filter_sz);
2848                 memcpy(&ib_spec->gre.mask, kern_spec_mask, actual_filter_sz);
2849                 break;
2850         case IB_FLOW_SPEC_MPLS:
2851                 ib_filter_sz = offsetof(struct ib_flow_mpls_filter, real_sz);
2852                 actual_filter_sz = spec_filter_size(kern_spec_mask,
2853                                                     kern_filter_sz,
2854                                                     ib_filter_sz);
2855                 if (actual_filter_sz <= 0)
2856                         return -EINVAL;
2857                 ib_spec->mpls.size = sizeof(struct ib_flow_spec_mpls);
2858                 memcpy(&ib_spec->mpls.val, kern_spec_val, actual_filter_sz);
2859                 memcpy(&ib_spec->mpls.mask, kern_spec_mask, actual_filter_sz);
2860                 break;
2861         default:
2862                 return -EINVAL;
2863         }
2864         return 0;
2865 }
2866
2867 static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec,
2868                                        union ib_flow_spec *ib_spec)
2869 {
2870         ssize_t kern_filter_sz;
2871         void *kern_spec_mask;
2872         void *kern_spec_val;
2873
2874         kern_filter_sz = kern_spec_filter_sz(&kern_spec->hdr);
2875
2876         kern_spec_val = (void *)kern_spec +
2877                 sizeof(struct ib_uverbs_flow_spec_hdr);
2878         kern_spec_mask = kern_spec_val + kern_filter_sz;
2879
2880         return ib_uverbs_kern_spec_to_ib_spec_filter(kern_spec->type,
2881                                                      kern_spec_mask,
2882                                                      kern_spec_val,
2883                                                      kern_filter_sz, ib_spec);
2884 }
2885
2886 static int kern_spec_to_ib_spec(struct uverbs_attr_bundle *attrs,
2887                                 struct ib_uverbs_flow_spec *kern_spec,
2888                                 union ib_flow_spec *ib_spec,
2889                                 struct ib_uflow_resources *uflow_res)
2890 {
2891         if (kern_spec->reserved)
2892                 return -EINVAL;
2893
2894         if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG)
2895                 return kern_spec_to_ib_spec_action(attrs, kern_spec, ib_spec,
2896                                                    uflow_res);
2897         else
2898                 return kern_spec_to_ib_spec_filter(kern_spec, ib_spec);
2899 }
2900
2901 static int ib_uverbs_ex_create_wq(struct uverbs_attr_bundle *attrs)
2902 {
2903         struct ib_uverbs_ex_create_wq cmd;
2904         struct ib_uverbs_ex_create_wq_resp resp = {};
2905         struct ib_uwq_object           *obj;
2906         int err = 0;
2907         struct ib_cq *cq;
2908         struct ib_pd *pd;
2909         struct ib_wq *wq;
2910         struct ib_wq_init_attr wq_init_attr = {};
2911         struct ib_device *ib_dev;
2912
2913         err = uverbs_request(attrs, &cmd, sizeof(cmd));
2914         if (err)
2915                 return err;
2916
2917         if (cmd.comp_mask)
2918                 return -EOPNOTSUPP;
2919
2920         obj = (struct ib_uwq_object *)uobj_alloc(UVERBS_OBJECT_WQ, attrs,
2921                                                  &ib_dev);
2922         if (IS_ERR(obj))
2923                 return PTR_ERR(obj);
2924
2925         pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
2926         if (!pd) {
2927                 err = -EINVAL;
2928                 goto err_uobj;
2929         }
2930
2931         cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
2932         if (!cq) {
2933                 err = -EINVAL;
2934                 goto err_put_pd;
2935         }
2936
2937         wq_init_attr.cq = cq;
2938         wq_init_attr.max_sge = cmd.max_sge;
2939         wq_init_attr.max_wr = cmd.max_wr;
2940         wq_init_attr.wq_context = attrs->ufile;
2941         wq_init_attr.wq_type = cmd.wq_type;
2942         wq_init_attr.event_handler = ib_uverbs_wq_event_handler;
2943         wq_init_attr.create_flags = cmd.create_flags;
2944         obj->uevent.events_reported = 0;
2945         INIT_LIST_HEAD(&obj->uevent.event_list);
2946
2947         wq = pd->device->ops.create_wq(pd, &wq_init_attr, &attrs->driver_udata);
2948         if (IS_ERR(wq)) {
2949                 err = PTR_ERR(wq);
2950                 goto err_put_cq;
2951         }
2952
2953         wq->uobject = &obj->uevent.uobject;
2954         obj->uevent.uobject.object = wq;
2955         wq->wq_type = wq_init_attr.wq_type;
2956         wq->cq = cq;
2957         wq->pd = pd;
2958         wq->device = pd->device;
2959         wq->wq_context = wq_init_attr.wq_context;
2960         atomic_set(&wq->usecnt, 0);
2961         atomic_inc(&pd->usecnt);
2962         atomic_inc(&cq->usecnt);
2963         wq->uobject = &obj->uevent.uobject;
2964         obj->uevent.uobject.object = wq;
2965
2966         memset(&resp, 0, sizeof(resp));
2967         resp.wq_handle = obj->uevent.uobject.id;
2968         resp.max_sge = wq_init_attr.max_sge;
2969         resp.max_wr = wq_init_attr.max_wr;
2970         resp.wqn = wq->wq_num;
2971         resp.response_length = uverbs_response_length(attrs, sizeof(resp));
2972         err = uverbs_response(attrs, &resp, sizeof(resp));
2973         if (err)
2974                 goto err_copy;
2975
2976         uobj_put_obj_read(pd);
2977         uobj_put_obj_read(cq);
2978         return uobj_alloc_commit(&obj->uevent.uobject, attrs);
2979
2980 err_copy:
2981         ib_destroy_wq(wq, uverbs_get_cleared_udata(attrs));
2982 err_put_cq:
2983         uobj_put_obj_read(cq);
2984 err_put_pd:
2985         uobj_put_obj_read(pd);
2986 err_uobj:
2987         uobj_alloc_abort(&obj->uevent.uobject, attrs);
2988
2989         return err;
2990 }
2991
2992 static int ib_uverbs_ex_destroy_wq(struct uverbs_attr_bundle *attrs)
2993 {
2994         struct ib_uverbs_ex_destroy_wq  cmd;
2995         struct ib_uverbs_ex_destroy_wq_resp     resp = {};
2996         struct ib_uobject               *uobj;
2997         struct ib_uwq_object            *obj;
2998         int                             ret;
2999
3000         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3001         if (ret)
3002                 return ret;
3003
3004         if (cmd.comp_mask)
3005                 return -EOPNOTSUPP;
3006
3007         resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3008         uobj = uobj_get_destroy(UVERBS_OBJECT_WQ, cmd.wq_handle, attrs);
3009         if (IS_ERR(uobj))
3010                 return PTR_ERR(uobj);
3011
3012         obj = container_of(uobj, struct ib_uwq_object, uevent.uobject);
3013         resp.events_reported = obj->uevent.events_reported;
3014
3015         uobj_put_destroy(uobj);
3016
3017         return uverbs_response(attrs, &resp, sizeof(resp));
3018 }
3019
3020 static int ib_uverbs_ex_modify_wq(struct uverbs_attr_bundle *attrs)
3021 {
3022         struct ib_uverbs_ex_modify_wq cmd;
3023         struct ib_wq *wq;
3024         struct ib_wq_attr wq_attr = {};
3025         int ret;
3026
3027         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3028         if (ret)
3029                 return ret;
3030
3031         if (!cmd.attr_mask)
3032                 return -EINVAL;
3033
3034         if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS))
3035                 return -EINVAL;
3036
3037         wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, cmd.wq_handle, attrs);
3038         if (!wq)
3039                 return -EINVAL;
3040
3041         wq_attr.curr_wq_state = cmd.curr_wq_state;
3042         wq_attr.wq_state = cmd.wq_state;
3043         if (cmd.attr_mask & IB_WQ_FLAGS) {
3044                 wq_attr.flags = cmd.flags;
3045                 wq_attr.flags_mask = cmd.flags_mask;
3046         }
3047         ret = wq->device->ops.modify_wq(wq, &wq_attr, cmd.attr_mask,
3048                                         &attrs->driver_udata);
3049         uobj_put_obj_read(wq);
3050         return ret;
3051 }
3052
3053 static int ib_uverbs_ex_create_rwq_ind_table(struct uverbs_attr_bundle *attrs)
3054 {
3055         struct ib_uverbs_ex_create_rwq_ind_table cmd;
3056         struct ib_uverbs_ex_create_rwq_ind_table_resp  resp = {};
3057         struct ib_uobject                 *uobj;
3058         int err;
3059         struct ib_rwq_ind_table_init_attr init_attr = {};
3060         struct ib_rwq_ind_table *rwq_ind_tbl;
3061         struct ib_wq    **wqs = NULL;
3062         u32 *wqs_handles = NULL;
3063         struct ib_wq    *wq = NULL;
3064         int i, j, num_read_wqs;
3065         u32 num_wq_handles;
3066         struct uverbs_req_iter iter;
3067         struct ib_device *ib_dev;
3068
3069         err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
3070         if (err)
3071                 return err;
3072
3073         if (cmd.comp_mask)
3074                 return -EOPNOTSUPP;
3075
3076         if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE)
3077                 return -EINVAL;
3078
3079         num_wq_handles = 1 << cmd.log_ind_tbl_size;
3080         wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles),
3081                               GFP_KERNEL);
3082         if (!wqs_handles)
3083                 return -ENOMEM;
3084
3085         err = uverbs_request_next(&iter, wqs_handles,
3086                                   num_wq_handles * sizeof(__u32));
3087         if (err)
3088                 goto err_free;
3089
3090         err = uverbs_request_finish(&iter);
3091         if (err)
3092                 goto err_free;
3093
3094         wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL);
3095         if (!wqs) {
3096                 err = -ENOMEM;
3097                 goto  err_free;
3098         }
3099
3100         for (num_read_wqs = 0; num_read_wqs < num_wq_handles;
3101                         num_read_wqs++) {
3102                 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ,
3103                                        wqs_handles[num_read_wqs], attrs);
3104                 if (!wq) {
3105                         err = -EINVAL;
3106                         goto put_wqs;
3107                 }
3108
3109                 wqs[num_read_wqs] = wq;
3110         }
3111
3112         uobj = uobj_alloc(UVERBS_OBJECT_RWQ_IND_TBL, attrs, &ib_dev);
3113         if (IS_ERR(uobj)) {
3114                 err = PTR_ERR(uobj);
3115                 goto put_wqs;
3116         }
3117
3118         init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size;
3119         init_attr.ind_tbl = wqs;
3120
3121         rwq_ind_tbl = ib_dev->ops.create_rwq_ind_table(ib_dev, &init_attr,
3122                                                        &attrs->driver_udata);
3123
3124         if (IS_ERR(rwq_ind_tbl)) {
3125                 err = PTR_ERR(rwq_ind_tbl);
3126                 goto err_uobj;
3127         }
3128
3129         rwq_ind_tbl->ind_tbl = wqs;
3130         rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size;
3131         rwq_ind_tbl->uobject = uobj;
3132         uobj->object = rwq_ind_tbl;
3133         rwq_ind_tbl->device = ib_dev;
3134         atomic_set(&rwq_ind_tbl->usecnt, 0);
3135
3136         for (i = 0; i < num_wq_handles; i++)
3137                 atomic_inc(&wqs[i]->usecnt);
3138
3139         resp.ind_tbl_handle = uobj->id;
3140         resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num;
3141         resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3142
3143         err = uverbs_response(attrs, &resp, sizeof(resp));
3144         if (err)
3145                 goto err_copy;
3146
3147         kfree(wqs_handles);
3148
3149         for (j = 0; j < num_read_wqs; j++)
3150                 uobj_put_obj_read(wqs[j]);
3151
3152         return uobj_alloc_commit(uobj, attrs);
3153
3154 err_copy:
3155         ib_destroy_rwq_ind_table(rwq_ind_tbl);
3156 err_uobj:
3157         uobj_alloc_abort(uobj, attrs);
3158 put_wqs:
3159         for (j = 0; j < num_read_wqs; j++)
3160                 uobj_put_obj_read(wqs[j]);
3161 err_free:
3162         kfree(wqs_handles);
3163         kfree(wqs);
3164         return err;
3165 }
3166
3167 static int ib_uverbs_ex_destroy_rwq_ind_table(struct uverbs_attr_bundle *attrs)
3168 {
3169         struct ib_uverbs_ex_destroy_rwq_ind_table cmd;
3170         int ret;
3171
3172         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3173         if (ret)
3174                 return ret;
3175
3176         if (cmd.comp_mask)
3177                 return -EOPNOTSUPP;
3178
3179         return uobj_perform_destroy(UVERBS_OBJECT_RWQ_IND_TBL,
3180                                     cmd.ind_tbl_handle, attrs);
3181 }
3182
3183 static int ib_uverbs_ex_create_flow(struct uverbs_attr_bundle *attrs)
3184 {
3185         struct ib_uverbs_create_flow      cmd;
3186         struct ib_uverbs_create_flow_resp resp;
3187         struct ib_uobject                 *uobj;
3188         struct ib_flow                    *flow_id;
3189         struct ib_uverbs_flow_attr        *kern_flow_attr;
3190         struct ib_flow_attr               *flow_attr;
3191         struct ib_qp                      *qp;
3192         struct ib_uflow_resources         *uflow_res;
3193         struct ib_uverbs_flow_spec_hdr    *kern_spec;
3194         struct uverbs_req_iter iter;
3195         int err;
3196         void *ib_spec;
3197         int i;
3198         struct ib_device *ib_dev;
3199
3200         err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
3201         if (err)
3202                 return err;
3203
3204         if (cmd.comp_mask)
3205                 return -EINVAL;
3206
3207         if (!capable(CAP_NET_RAW))
3208                 return -EPERM;
3209
3210         if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED)
3211                 return -EINVAL;
3212
3213         if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
3214             ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) ||
3215              (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT)))
3216                 return -EINVAL;
3217
3218         if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS)
3219                 return -EINVAL;
3220
3221         if (cmd.flow_attr.size >
3222             (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec)))
3223                 return -EINVAL;
3224
3225         if (cmd.flow_attr.reserved[0] ||
3226             cmd.flow_attr.reserved[1])
3227                 return -EINVAL;
3228
3229         if (cmd.flow_attr.num_of_specs) {
3230                 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size,
3231                                          GFP_KERNEL);
3232                 if (!kern_flow_attr)
3233                         return -ENOMEM;
3234
3235                 *kern_flow_attr = cmd.flow_attr;
3236                 err = uverbs_request_next(&iter, &kern_flow_attr->flow_specs,
3237                                           cmd.flow_attr.size);
3238                 if (err)
3239                         goto err_free_attr;
3240         } else {
3241                 kern_flow_attr = &cmd.flow_attr;
3242         }
3243
3244         err = uverbs_request_finish(&iter);
3245         if (err)
3246                 goto err_free_attr;
3247
3248         uobj = uobj_alloc(UVERBS_OBJECT_FLOW, attrs, &ib_dev);
3249         if (IS_ERR(uobj)) {
3250                 err = PTR_ERR(uobj);
3251                 goto err_free_attr;
3252         }
3253
3254         qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
3255         if (!qp) {
3256                 err = -EINVAL;
3257                 goto err_uobj;
3258         }
3259
3260         if (qp->qp_type != IB_QPT_UD && qp->qp_type != IB_QPT_RAW_PACKET) {
3261                 err = -EINVAL;
3262                 goto err_put;
3263         }
3264
3265         flow_attr = kzalloc(struct_size(flow_attr, flows,
3266                                 cmd.flow_attr.num_of_specs), GFP_KERNEL);
3267         if (!flow_attr) {
3268                 err = -ENOMEM;
3269                 goto err_put;
3270         }
3271         uflow_res = flow_resources_alloc(cmd.flow_attr.num_of_specs);
3272         if (!uflow_res) {
3273                 err = -ENOMEM;
3274                 goto err_free_flow_attr;
3275         }
3276
3277         flow_attr->type = kern_flow_attr->type;
3278         flow_attr->priority = kern_flow_attr->priority;
3279         flow_attr->num_of_specs = kern_flow_attr->num_of_specs;
3280         flow_attr->port = kern_flow_attr->port;
3281         flow_attr->flags = kern_flow_attr->flags;
3282         flow_attr->size = sizeof(*flow_attr);
3283
3284         kern_spec = kern_flow_attr->flow_specs;
3285         ib_spec = flow_attr + 1;
3286         for (i = 0; i < flow_attr->num_of_specs &&
3287                         cmd.flow_attr.size >= sizeof(*kern_spec) &&
3288                         cmd.flow_attr.size >= kern_spec->size;
3289              i++) {
3290                 err = kern_spec_to_ib_spec(
3291                                 attrs, (struct ib_uverbs_flow_spec *)kern_spec,
3292                                 ib_spec, uflow_res);
3293                 if (err)
3294                         goto err_free;
3295
3296                 flow_attr->size +=
3297                         ((union ib_flow_spec *) ib_spec)->size;
3298                 cmd.flow_attr.size -= kern_spec->size;
3299                 kern_spec = ((void *)kern_spec) + kern_spec->size;
3300                 ib_spec += ((union ib_flow_spec *) ib_spec)->size;
3301         }
3302         if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) {
3303                 pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n",
3304                         i, cmd.flow_attr.size);
3305                 err = -EINVAL;
3306                 goto err_free;
3307         }
3308
3309         flow_id = qp->device->ops.create_flow(
3310                 qp, flow_attr, IB_FLOW_DOMAIN_USER, &attrs->driver_udata);
3311
3312         if (IS_ERR(flow_id)) {
3313                 err = PTR_ERR(flow_id);
3314                 goto err_free;
3315         }
3316
3317         ib_set_flow(uobj, flow_id, qp, qp->device, uflow_res);
3318
3319         memset(&resp, 0, sizeof(resp));
3320         resp.flow_handle = uobj->id;
3321
3322         err = uverbs_response(attrs, &resp, sizeof(resp));
3323         if (err)
3324                 goto err_copy;
3325
3326         uobj_put_obj_read(qp);
3327         kfree(flow_attr);
3328         if (cmd.flow_attr.num_of_specs)
3329                 kfree(kern_flow_attr);
3330         return uobj_alloc_commit(uobj, attrs);
3331 err_copy:
3332         if (!qp->device->ops.destroy_flow(flow_id))
3333                 atomic_dec(&qp->usecnt);
3334 err_free:
3335         ib_uverbs_flow_resources_free(uflow_res);
3336 err_free_flow_attr:
3337         kfree(flow_attr);
3338 err_put:
3339         uobj_put_obj_read(qp);
3340 err_uobj:
3341         uobj_alloc_abort(uobj, attrs);
3342 err_free_attr:
3343         if (cmd.flow_attr.num_of_specs)
3344                 kfree(kern_flow_attr);
3345         return err;
3346 }
3347
3348 static int ib_uverbs_ex_destroy_flow(struct uverbs_attr_bundle *attrs)
3349 {
3350         struct ib_uverbs_destroy_flow   cmd;
3351         int                             ret;
3352
3353         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3354         if (ret)
3355                 return ret;
3356
3357         if (cmd.comp_mask)
3358                 return -EINVAL;
3359
3360         return uobj_perform_destroy(UVERBS_OBJECT_FLOW, cmd.flow_handle, attrs);
3361 }
3362
3363 static int __uverbs_create_xsrq(struct uverbs_attr_bundle *attrs,
3364                                 struct ib_uverbs_create_xsrq *cmd,
3365                                 struct ib_udata *udata)
3366 {
3367         struct ib_uverbs_create_srq_resp resp;
3368         struct ib_usrq_object           *obj;
3369         struct ib_pd                    *pd;
3370         struct ib_srq                   *srq;
3371         struct ib_uobject               *uninitialized_var(xrcd_uobj);
3372         struct ib_srq_init_attr          attr;
3373         int ret;
3374         struct ib_device *ib_dev;
3375
3376         obj = (struct ib_usrq_object *)uobj_alloc(UVERBS_OBJECT_SRQ, attrs,
3377                                                   &ib_dev);
3378         if (IS_ERR(obj))
3379                 return PTR_ERR(obj);
3380
3381         if (cmd->srq_type == IB_SRQT_TM)
3382                 attr.ext.tag_matching.max_num_tags = cmd->max_num_tags;
3383
3384         if (cmd->srq_type == IB_SRQT_XRC) {
3385                 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->xrcd_handle,
3386                                           attrs);
3387                 if (IS_ERR(xrcd_uobj)) {
3388                         ret = -EINVAL;
3389                         goto err;
3390                 }
3391
3392                 attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object;
3393                 if (!attr.ext.xrc.xrcd) {
3394                         ret = -EINVAL;
3395                         goto err_put_xrcd;
3396                 }
3397
3398                 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
3399                 atomic_inc(&obj->uxrcd->refcnt);
3400         }
3401
3402         if (ib_srq_has_cq(cmd->srq_type)) {
3403                 attr.ext.cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ,
3404                                                 cmd->cq_handle, attrs);
3405                 if (!attr.ext.cq) {
3406                         ret = -EINVAL;
3407                         goto err_put_xrcd;
3408                 }
3409         }
3410
3411         pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, attrs);
3412         if (!pd) {
3413                 ret = -EINVAL;
3414                 goto err_put_cq;
3415         }
3416
3417         attr.event_handler  = ib_uverbs_srq_event_handler;
3418         attr.srq_context    = attrs->ufile;
3419         attr.srq_type       = cmd->srq_type;
3420         attr.attr.max_wr    = cmd->max_wr;
3421         attr.attr.max_sge   = cmd->max_sge;
3422         attr.attr.srq_limit = cmd->srq_limit;
3423
3424         obj->uevent.events_reported = 0;
3425         INIT_LIST_HEAD(&obj->uevent.event_list);
3426
3427         srq = rdma_zalloc_drv_obj(ib_dev, ib_srq);
3428         if (!srq) {
3429                 ret = -ENOMEM;
3430                 goto err_put;
3431         }
3432
3433         srq->device        = pd->device;
3434         srq->pd            = pd;
3435         srq->srq_type      = cmd->srq_type;
3436         srq->uobject       = &obj->uevent.uobject;
3437         srq->event_handler = attr.event_handler;
3438         srq->srq_context   = attr.srq_context;
3439
3440         ret = pd->device->ops.create_srq(srq, &attr, udata);
3441         if (ret)
3442                 goto err_free;
3443
3444         if (ib_srq_has_cq(cmd->srq_type)) {
3445                 srq->ext.cq       = attr.ext.cq;
3446                 atomic_inc(&attr.ext.cq->usecnt);
3447         }
3448
3449         if (cmd->srq_type == IB_SRQT_XRC) {
3450                 srq->ext.xrc.xrcd = attr.ext.xrc.xrcd;
3451                 atomic_inc(&attr.ext.xrc.xrcd->usecnt);
3452         }
3453
3454         atomic_inc(&pd->usecnt);
3455         atomic_set(&srq->usecnt, 0);
3456
3457         obj->uevent.uobject.object = srq;
3458         obj->uevent.uobject.user_handle = cmd->user_handle;
3459
3460         memset(&resp, 0, sizeof resp);
3461         resp.srq_handle = obj->uevent.uobject.id;
3462         resp.max_wr     = attr.attr.max_wr;
3463         resp.max_sge    = attr.attr.max_sge;
3464         if (cmd->srq_type == IB_SRQT_XRC)
3465                 resp.srqn = srq->ext.xrc.srq_num;
3466
3467         ret = uverbs_response(attrs, &resp, sizeof(resp));
3468         if (ret)
3469                 goto err_copy;
3470
3471         if (cmd->srq_type == IB_SRQT_XRC)
3472                 uobj_put_read(xrcd_uobj);
3473
3474         if (ib_srq_has_cq(cmd->srq_type))
3475                 uobj_put_obj_read(attr.ext.cq);
3476
3477         uobj_put_obj_read(pd);
3478         return uobj_alloc_commit(&obj->uevent.uobject, attrs);
3479
3480 err_copy:
3481         ib_destroy_srq_user(srq, uverbs_get_cleared_udata(attrs));
3482         /* It was released in ib_destroy_srq_user */
3483         srq = NULL;
3484 err_free:
3485         kfree(srq);
3486 err_put:
3487         uobj_put_obj_read(pd);
3488
3489 err_put_cq:
3490         if (ib_srq_has_cq(cmd->srq_type))
3491                 uobj_put_obj_read(attr.ext.cq);
3492
3493 err_put_xrcd:
3494         if (cmd->srq_type == IB_SRQT_XRC) {
3495                 atomic_dec(&obj->uxrcd->refcnt);
3496                 uobj_put_read(xrcd_uobj);
3497         }
3498
3499 err:
3500         uobj_alloc_abort(&obj->uevent.uobject, attrs);
3501         return ret;
3502 }
3503
3504 static int ib_uverbs_create_srq(struct uverbs_attr_bundle *attrs)
3505 {
3506         struct ib_uverbs_create_srq      cmd;
3507         struct ib_uverbs_create_xsrq     xcmd;
3508         int ret;
3509
3510         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3511         if (ret)
3512                 return ret;
3513
3514         memset(&xcmd, 0, sizeof(xcmd));
3515         xcmd.response    = cmd.response;
3516         xcmd.user_handle = cmd.user_handle;
3517         xcmd.srq_type    = IB_SRQT_BASIC;
3518         xcmd.pd_handle   = cmd.pd_handle;
3519         xcmd.max_wr      = cmd.max_wr;
3520         xcmd.max_sge     = cmd.max_sge;
3521         xcmd.srq_limit   = cmd.srq_limit;
3522
3523         return __uverbs_create_xsrq(attrs, &xcmd, &attrs->driver_udata);
3524 }
3525
3526 static int ib_uverbs_create_xsrq(struct uverbs_attr_bundle *attrs)
3527 {
3528         struct ib_uverbs_create_xsrq     cmd;
3529         int ret;
3530
3531         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3532         if (ret)
3533                 return ret;
3534
3535         return __uverbs_create_xsrq(attrs, &cmd, &attrs->driver_udata);
3536 }
3537
3538 static int ib_uverbs_modify_srq(struct uverbs_attr_bundle *attrs)
3539 {
3540         struct ib_uverbs_modify_srq cmd;
3541         struct ib_srq              *srq;
3542         struct ib_srq_attr          attr;
3543         int                         ret;
3544
3545         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3546         if (ret)
3547                 return ret;
3548
3549         srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3550         if (!srq)
3551                 return -EINVAL;
3552
3553         attr.max_wr    = cmd.max_wr;
3554         attr.srq_limit = cmd.srq_limit;
3555
3556         ret = srq->device->ops.modify_srq(srq, &attr, cmd.attr_mask,
3557                                           &attrs->driver_udata);
3558
3559         uobj_put_obj_read(srq);
3560
3561         return ret;
3562 }
3563
3564 static int ib_uverbs_query_srq(struct uverbs_attr_bundle *attrs)
3565 {
3566         struct ib_uverbs_query_srq      cmd;
3567         struct ib_uverbs_query_srq_resp resp;
3568         struct ib_srq_attr              attr;
3569         struct ib_srq                   *srq;
3570         int                             ret;
3571
3572         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3573         if (ret)
3574                 return ret;
3575
3576         srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3577         if (!srq)
3578                 return -EINVAL;
3579
3580         ret = ib_query_srq(srq, &attr);
3581
3582         uobj_put_obj_read(srq);
3583
3584         if (ret)
3585                 return ret;
3586
3587         memset(&resp, 0, sizeof resp);
3588
3589         resp.max_wr    = attr.max_wr;
3590         resp.max_sge   = attr.max_sge;
3591         resp.srq_limit = attr.srq_limit;
3592
3593         return uverbs_response(attrs, &resp, sizeof(resp));
3594 }
3595
3596 static int ib_uverbs_destroy_srq(struct uverbs_attr_bundle *attrs)
3597 {
3598         struct ib_uverbs_destroy_srq      cmd;
3599         struct ib_uverbs_destroy_srq_resp resp;
3600         struct ib_uobject                *uobj;
3601         struct ib_uevent_object          *obj;
3602         int ret;
3603
3604         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3605         if (ret)
3606                 return ret;
3607
3608         uobj = uobj_get_destroy(UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3609         if (IS_ERR(uobj))
3610                 return PTR_ERR(uobj);
3611
3612         obj = container_of(uobj, struct ib_uevent_object, uobject);
3613         memset(&resp, 0, sizeof(resp));
3614         resp.events_reported = obj->events_reported;
3615
3616         uobj_put_destroy(uobj);
3617
3618         return uverbs_response(attrs, &resp, sizeof(resp));
3619 }
3620
3621 static int ib_uverbs_ex_query_device(struct uverbs_attr_bundle *attrs)
3622 {
3623         struct ib_uverbs_ex_query_device_resp resp = {};
3624         struct ib_uverbs_ex_query_device  cmd;
3625         struct ib_device_attr attr = {0};
3626         struct ib_ucontext *ucontext;
3627         struct ib_device *ib_dev;
3628         int err;
3629
3630         ucontext = ib_uverbs_get_ucontext(attrs);
3631         if (IS_ERR(ucontext))
3632                 return PTR_ERR(ucontext);
3633         ib_dev = ucontext->device;
3634
3635         err = uverbs_request(attrs, &cmd, sizeof(cmd));
3636         if (err)
3637                 return err;
3638
3639         if (cmd.comp_mask)
3640                 return -EINVAL;
3641
3642         if (cmd.reserved)
3643                 return -EINVAL;
3644
3645         err = ib_dev->ops.query_device(ib_dev, &attr, &attrs->driver_udata);
3646         if (err)
3647                 return err;
3648
3649         copy_query_dev_fields(ucontext, &resp.base, &attr);
3650
3651         resp.odp_caps.general_caps = attr.odp_caps.general_caps;
3652         resp.odp_caps.per_transport_caps.rc_odp_caps =
3653                 attr.odp_caps.per_transport_caps.rc_odp_caps;
3654         resp.odp_caps.per_transport_caps.uc_odp_caps =
3655                 attr.odp_caps.per_transport_caps.uc_odp_caps;
3656         resp.odp_caps.per_transport_caps.ud_odp_caps =
3657                 attr.odp_caps.per_transport_caps.ud_odp_caps;
3658         resp.xrc_odp_caps = attr.odp_caps.per_transport_caps.xrc_odp_caps;
3659
3660         resp.timestamp_mask = attr.timestamp_mask;
3661         resp.hca_core_clock = attr.hca_core_clock;
3662         resp.device_cap_flags_ex = attr.device_cap_flags;
3663         resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts;
3664         resp.rss_caps.max_rwq_indirection_tables =
3665                 attr.rss_caps.max_rwq_indirection_tables;
3666         resp.rss_caps.max_rwq_indirection_table_size =
3667                 attr.rss_caps.max_rwq_indirection_table_size;
3668         resp.max_wq_type_rq = attr.max_wq_type_rq;
3669         resp.raw_packet_caps = attr.raw_packet_caps;
3670         resp.tm_caps.max_rndv_hdr_size  = attr.tm_caps.max_rndv_hdr_size;
3671         resp.tm_caps.max_num_tags       = attr.tm_caps.max_num_tags;
3672         resp.tm_caps.max_ops            = attr.tm_caps.max_ops;
3673         resp.tm_caps.max_sge            = attr.tm_caps.max_sge;
3674         resp.tm_caps.flags              = attr.tm_caps.flags;
3675         resp.cq_moderation_caps.max_cq_moderation_count  =
3676                 attr.cq_caps.max_cq_moderation_count;
3677         resp.cq_moderation_caps.max_cq_moderation_period =
3678                 attr.cq_caps.max_cq_moderation_period;
3679         resp.max_dm_size = attr.max_dm_size;
3680         resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3681
3682         return uverbs_response(attrs, &resp, sizeof(resp));
3683 }
3684
3685 static int ib_uverbs_ex_modify_cq(struct uverbs_attr_bundle *attrs)
3686 {
3687         struct ib_uverbs_ex_modify_cq cmd;
3688         struct ib_cq *cq;
3689         int ret;
3690
3691         ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3692         if (ret)
3693                 return ret;
3694
3695         if (!cmd.attr_mask || cmd.reserved)
3696                 return -EINVAL;
3697
3698         if (cmd.attr_mask > IB_CQ_MODERATE)
3699                 return -EOPNOTSUPP;
3700
3701         cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
3702         if (!cq)
3703                 return -EINVAL;
3704
3705         ret = rdma_set_cq_moderation(cq, cmd.attr.cq_count, cmd.attr.cq_period);
3706
3707         uobj_put_obj_read(cq);
3708
3709         return ret;
3710 }
3711
3712 /*
3713  * Describe the input structs for write(). Some write methods have an input
3714  * only struct, most have an input and output. If the struct has an output then
3715  * the 'response' u64 must be the first field in the request structure.
3716  *
3717  * If udata is present then both the request and response structs have a
3718  * trailing driver_data flex array. In this case the size of the base struct
3719  * cannot be changed.
3720  */
3721 #define UAPI_DEF_WRITE_IO(req, resp)                                           \
3722         .write.has_resp = 1 +                                                  \
3723                           BUILD_BUG_ON_ZERO(offsetof(req, response) != 0) +    \
3724                           BUILD_BUG_ON_ZERO(sizeof(((req *)0)->response) !=    \
3725                                             sizeof(u64)),                      \
3726         .write.req_size = sizeof(req), .write.resp_size = sizeof(resp)
3727
3728 #define UAPI_DEF_WRITE_I(req) .write.req_size = sizeof(req)
3729
3730 #define UAPI_DEF_WRITE_UDATA_IO(req, resp)                                     \
3731         UAPI_DEF_WRITE_IO(req, resp),                                          \
3732                 .write.has_udata =                                             \
3733                         1 +                                                    \
3734                         BUILD_BUG_ON_ZERO(offsetof(req, driver_data) !=        \
3735                                           sizeof(req)) +                       \
3736                         BUILD_BUG_ON_ZERO(offsetof(resp, driver_data) !=       \
3737                                           sizeof(resp))
3738
3739 #define UAPI_DEF_WRITE_UDATA_I(req)                                            \
3740         UAPI_DEF_WRITE_I(req),                                                 \
3741                 .write.has_udata =                                             \
3742                         1 + BUILD_BUG_ON_ZERO(offsetof(req, driver_data) !=    \
3743                                               sizeof(req))
3744
3745 /*
3746  * The _EX versions are for use with WRITE_EX and allow the last struct member
3747  * to be specified. Buffers that do not include that member will be rejected.
3748  */
3749 #define UAPI_DEF_WRITE_IO_EX(req, req_last_member, resp, resp_last_member)     \
3750         .write.has_resp = 1,                                                   \
3751         .write.req_size = offsetofend(req, req_last_member),                   \
3752         .write.resp_size = offsetofend(resp, resp_last_member)
3753
3754 #define UAPI_DEF_WRITE_I_EX(req, req_last_member)                              \
3755         .write.req_size = offsetofend(req, req_last_member)
3756
3757 const struct uapi_definition uverbs_def_write_intf[] = {
3758         DECLARE_UVERBS_OBJECT(
3759                 UVERBS_OBJECT_AH,
3760                 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_AH,
3761                                      ib_uverbs_create_ah,
3762                                      UAPI_DEF_WRITE_UDATA_IO(
3763                                              struct ib_uverbs_create_ah,
3764                                              struct ib_uverbs_create_ah_resp),
3765                                      UAPI_DEF_METHOD_NEEDS_FN(create_ah)),
3766                 DECLARE_UVERBS_WRITE(
3767                         IB_USER_VERBS_CMD_DESTROY_AH,
3768                         ib_uverbs_destroy_ah,
3769                         UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_ah),
3770                         UAPI_DEF_METHOD_NEEDS_FN(destroy_ah))),
3771
3772         DECLARE_UVERBS_OBJECT(
3773                 UVERBS_OBJECT_COMP_CHANNEL,
3774                 DECLARE_UVERBS_WRITE(
3775                         IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL,
3776                         ib_uverbs_create_comp_channel,
3777                         UAPI_DEF_WRITE_IO(
3778                                 struct ib_uverbs_create_comp_channel,
3779                                 struct ib_uverbs_create_comp_channel_resp))),
3780
3781         DECLARE_UVERBS_OBJECT(
3782                 UVERBS_OBJECT_CQ,
3783                 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_CQ,
3784                                      ib_uverbs_create_cq,
3785                                      UAPI_DEF_WRITE_UDATA_IO(
3786                                              struct ib_uverbs_create_cq,
3787                                              struct ib_uverbs_create_cq_resp),
3788                                      UAPI_DEF_METHOD_NEEDS_FN(create_cq)),
3789                 DECLARE_UVERBS_WRITE(
3790                         IB_USER_VERBS_CMD_DESTROY_CQ,
3791                         ib_uverbs_destroy_cq,
3792                         UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_cq,
3793                                           struct ib_uverbs_destroy_cq_resp),
3794                         UAPI_DEF_METHOD_NEEDS_FN(destroy_cq)),
3795                 DECLARE_UVERBS_WRITE(
3796                         IB_USER_VERBS_CMD_POLL_CQ,
3797                         ib_uverbs_poll_cq,
3798                         UAPI_DEF_WRITE_IO(struct ib_uverbs_poll_cq,
3799                                           struct ib_uverbs_poll_cq_resp),
3800                         UAPI_DEF_METHOD_NEEDS_FN(poll_cq)),
3801                 DECLARE_UVERBS_WRITE(
3802                         IB_USER_VERBS_CMD_REQ_NOTIFY_CQ,
3803                         ib_uverbs_req_notify_cq,
3804                         UAPI_DEF_WRITE_I(struct ib_uverbs_req_notify_cq),
3805                         UAPI_DEF_METHOD_NEEDS_FN(req_notify_cq)),
3806                 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_RESIZE_CQ,
3807                                      ib_uverbs_resize_cq,
3808                                      UAPI_DEF_WRITE_UDATA_IO(
3809                                              struct ib_uverbs_resize_cq,
3810                                              struct ib_uverbs_resize_cq_resp),
3811                                      UAPI_DEF_METHOD_NEEDS_FN(resize_cq)),
3812                 DECLARE_UVERBS_WRITE_EX(
3813                         IB_USER_VERBS_EX_CMD_CREATE_CQ,
3814                         ib_uverbs_ex_create_cq,
3815                         UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_cq,
3816                                              reserved,
3817                                              struct ib_uverbs_ex_create_cq_resp,
3818                                              response_length),
3819                         UAPI_DEF_METHOD_NEEDS_FN(create_cq)),
3820                 DECLARE_UVERBS_WRITE_EX(
3821                         IB_USER_VERBS_EX_CMD_MODIFY_CQ,
3822                         ib_uverbs_ex_modify_cq,
3823                         UAPI_DEF_WRITE_I(struct ib_uverbs_ex_modify_cq),
3824                         UAPI_DEF_METHOD_NEEDS_FN(create_cq))),
3825
3826         DECLARE_UVERBS_OBJECT(
3827                 UVERBS_OBJECT_DEVICE,
3828                 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_GET_CONTEXT,
3829                                      ib_uverbs_get_context,
3830                                      UAPI_DEF_WRITE_UDATA_IO(
3831                                              struct ib_uverbs_get_context,
3832                                              struct ib_uverbs_get_context_resp)),
3833                 DECLARE_UVERBS_WRITE(
3834                         IB_USER_VERBS_CMD_QUERY_DEVICE,
3835                         ib_uverbs_query_device,
3836                         UAPI_DEF_WRITE_IO(struct ib_uverbs_query_device,
3837                                           struct ib_uverbs_query_device_resp)),
3838                 DECLARE_UVERBS_WRITE(
3839                         IB_USER_VERBS_CMD_QUERY_PORT,
3840                         ib_uverbs_query_port,
3841                         UAPI_DEF_WRITE_IO(struct ib_uverbs_query_port,
3842                                           struct ib_uverbs_query_port_resp),
3843                         UAPI_DEF_METHOD_NEEDS_FN(query_port)),
3844                 DECLARE_UVERBS_WRITE_EX(
3845                         IB_USER_VERBS_EX_CMD_QUERY_DEVICE,
3846                         ib_uverbs_ex_query_device,
3847                         UAPI_DEF_WRITE_IO_EX(
3848                                 struct ib_uverbs_ex_query_device,
3849                                 reserved,
3850                                 struct ib_uverbs_ex_query_device_resp,
3851                                 response_length),
3852                         UAPI_DEF_METHOD_NEEDS_FN(query_device)),
3853                 UAPI_DEF_OBJ_NEEDS_FN(alloc_ucontext),
3854                 UAPI_DEF_OBJ_NEEDS_FN(dealloc_ucontext)),
3855
3856         DECLARE_UVERBS_OBJECT(
3857                 UVERBS_OBJECT_FLOW,
3858                 DECLARE_UVERBS_WRITE_EX(
3859                         IB_USER_VERBS_EX_CMD_CREATE_FLOW,
3860                         ib_uverbs_ex_create_flow,
3861                         UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_create_flow,
3862                                              flow_attr,
3863                                              struct ib_uverbs_create_flow_resp,
3864                                              flow_handle),
3865                         UAPI_DEF_METHOD_NEEDS_FN(create_flow)),
3866                 DECLARE_UVERBS_WRITE_EX(
3867                         IB_USER_VERBS_EX_CMD_DESTROY_FLOW,
3868                         ib_uverbs_ex_destroy_flow,
3869                         UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_flow),
3870                         UAPI_DEF_METHOD_NEEDS_FN(destroy_flow))),
3871
3872         DECLARE_UVERBS_OBJECT(
3873                 UVERBS_OBJECT_MR,
3874                 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_DEREG_MR,
3875                                      ib_uverbs_dereg_mr,
3876                                      UAPI_DEF_WRITE_I(struct ib_uverbs_dereg_mr),
3877                                      UAPI_DEF_METHOD_NEEDS_FN(dereg_mr)),
3878                 DECLARE_UVERBS_WRITE(
3879                         IB_USER_VERBS_CMD_REG_MR,
3880                         ib_uverbs_reg_mr,
3881                         UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_reg_mr,
3882                                                 struct ib_uverbs_reg_mr_resp),
3883                         UAPI_DEF_METHOD_NEEDS_FN(reg_user_mr)),
3884                 DECLARE_UVERBS_WRITE(
3885                         IB_USER_VERBS_CMD_REREG_MR,
3886                         ib_uverbs_rereg_mr,
3887                         UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_rereg_mr,
3888                                                 struct ib_uverbs_rereg_mr_resp),
3889                         UAPI_DEF_METHOD_NEEDS_FN(rereg_user_mr))),
3890
3891         DECLARE_UVERBS_OBJECT(
3892                 UVERBS_OBJECT_MW,
3893                 DECLARE_UVERBS_WRITE(
3894                         IB_USER_VERBS_CMD_ALLOC_MW,
3895                         ib_uverbs_alloc_mw,
3896                         UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_mw,
3897                                                 struct ib_uverbs_alloc_mw_resp),
3898                         UAPI_DEF_METHOD_NEEDS_FN(alloc_mw)),
3899                 DECLARE_UVERBS_WRITE(
3900                         IB_USER_VERBS_CMD_DEALLOC_MW,
3901                         ib_uverbs_dealloc_mw,
3902                         UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_mw),
3903                         UAPI_DEF_METHOD_NEEDS_FN(dealloc_mw))),
3904
3905         DECLARE_UVERBS_OBJECT(
3906                 UVERBS_OBJECT_PD,
3907                 DECLARE_UVERBS_WRITE(
3908                         IB_USER_VERBS_CMD_ALLOC_PD,
3909                         ib_uverbs_alloc_pd,
3910                         UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_pd,
3911                                                 struct ib_uverbs_alloc_pd_resp),
3912                         UAPI_DEF_METHOD_NEEDS_FN(alloc_pd)),
3913                 DECLARE_UVERBS_WRITE(
3914                         IB_USER_VERBS_CMD_DEALLOC_PD,
3915                         ib_uverbs_dealloc_pd,
3916                         UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_pd),
3917                         UAPI_DEF_METHOD_NEEDS_FN(dealloc_pd))),
3918
3919         DECLARE_UVERBS_OBJECT(
3920                 UVERBS_OBJECT_QP,
3921                 DECLARE_UVERBS_WRITE(
3922                         IB_USER_VERBS_CMD_ATTACH_MCAST,
3923                         ib_uverbs_attach_mcast,
3924                         UAPI_DEF_WRITE_I(struct ib_uverbs_attach_mcast),
3925                         UAPI_DEF_METHOD_NEEDS_FN(attach_mcast),
3926                         UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)),
3927                 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_QP,
3928                                      ib_uverbs_create_qp,
3929                                      UAPI_DEF_WRITE_UDATA_IO(
3930                                              struct ib_uverbs_create_qp,
3931                                              struct ib_uverbs_create_qp_resp),
3932                                      UAPI_DEF_METHOD_NEEDS_FN(create_qp)),
3933                 DECLARE_UVERBS_WRITE(
3934                         IB_USER_VERBS_CMD_DESTROY_QP,
3935                         ib_uverbs_destroy_qp,
3936                         UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_qp,
3937                                           struct ib_uverbs_destroy_qp_resp),
3938                         UAPI_DEF_METHOD_NEEDS_FN(destroy_qp)),
3939                 DECLARE_UVERBS_WRITE(
3940                         IB_USER_VERBS_CMD_DETACH_MCAST,
3941                         ib_uverbs_detach_mcast,
3942                         UAPI_DEF_WRITE_I(struct ib_uverbs_detach_mcast),
3943                         UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)),
3944                 DECLARE_UVERBS_WRITE(
3945                         IB_USER_VERBS_CMD_MODIFY_QP,
3946                         ib_uverbs_modify_qp,
3947                         UAPI_DEF_WRITE_I(struct ib_uverbs_modify_qp),
3948                         UAPI_DEF_METHOD_NEEDS_FN(modify_qp)),
3949                 DECLARE_UVERBS_WRITE(
3950                         IB_USER_VERBS_CMD_POST_RECV,
3951                         ib_uverbs_post_recv,
3952                         UAPI_DEF_WRITE_IO(struct ib_uverbs_post_recv,
3953                                           struct ib_uverbs_post_recv_resp),
3954                         UAPI_DEF_METHOD_NEEDS_FN(post_recv)),
3955                 DECLARE_UVERBS_WRITE(
3956                         IB_USER_VERBS_CMD_POST_SEND,
3957                         ib_uverbs_post_send,
3958                         UAPI_DEF_WRITE_IO(struct ib_uverbs_post_send,
3959                                           struct ib_uverbs_post_send_resp),
3960                         UAPI_DEF_METHOD_NEEDS_FN(post_send)),
3961                 DECLARE_UVERBS_WRITE(
3962                         IB_USER_VERBS_CMD_QUERY_QP,
3963                         ib_uverbs_query_qp,
3964                         UAPI_DEF_WRITE_IO(struct ib_uverbs_query_qp,
3965                                           struct ib_uverbs_query_qp_resp),
3966                         UAPI_DEF_METHOD_NEEDS_FN(query_qp)),
3967                 DECLARE_UVERBS_WRITE_EX(
3968                         IB_USER_VERBS_EX_CMD_CREATE_QP,
3969                         ib_uverbs_ex_create_qp,
3970                         UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_qp,
3971                                              comp_mask,
3972                                              struct ib_uverbs_ex_create_qp_resp,
3973                                              response_length),
3974                         UAPI_DEF_METHOD_NEEDS_FN(create_qp)),
3975                 DECLARE_UVERBS_WRITE_EX(
3976                         IB_USER_VERBS_EX_CMD_MODIFY_QP,
3977                         ib_uverbs_ex_modify_qp,
3978                         UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_modify_qp,
3979                                              base,
3980                                              struct ib_uverbs_ex_modify_qp_resp,
3981                                              response_length),
3982                         UAPI_DEF_METHOD_NEEDS_FN(modify_qp))),
3983
3984         DECLARE_UVERBS_OBJECT(
3985                 UVERBS_OBJECT_RWQ_IND_TBL,
3986                 DECLARE_UVERBS_WRITE_EX(
3987                         IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL,
3988                         ib_uverbs_ex_create_rwq_ind_table,
3989                         UAPI_DEF_WRITE_IO_EX(
3990                                 struct ib_uverbs_ex_create_rwq_ind_table,
3991                                 log_ind_tbl_size,
3992                                 struct ib_uverbs_ex_create_rwq_ind_table_resp,
3993                                 ind_tbl_num),
3994                         UAPI_DEF_METHOD_NEEDS_FN(create_rwq_ind_table)),
3995                 DECLARE_UVERBS_WRITE_EX(
3996                         IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL,
3997                         ib_uverbs_ex_destroy_rwq_ind_table,
3998                         UAPI_DEF_WRITE_I(
3999                                 struct ib_uverbs_ex_destroy_rwq_ind_table),
4000                         UAPI_DEF_METHOD_NEEDS_FN(destroy_rwq_ind_table))),
4001
4002         DECLARE_UVERBS_OBJECT(
4003                 UVERBS_OBJECT_WQ,
4004                 DECLARE_UVERBS_WRITE_EX(
4005                         IB_USER_VERBS_EX_CMD_CREATE_WQ,
4006                         ib_uverbs_ex_create_wq,
4007                         UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_wq,
4008                                              max_sge,
4009                                              struct ib_uverbs_ex_create_wq_resp,
4010                                              wqn),
4011                         UAPI_DEF_METHOD_NEEDS_FN(create_wq)),
4012                 DECLARE_UVERBS_WRITE_EX(
4013                         IB_USER_VERBS_EX_CMD_DESTROY_WQ,
4014                         ib_uverbs_ex_destroy_wq,
4015                         UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_destroy_wq,
4016                                              wq_handle,
4017                                              struct ib_uverbs_ex_destroy_wq_resp,
4018                                              reserved),
4019                         UAPI_DEF_METHOD_NEEDS_FN(destroy_wq)),
4020                 DECLARE_UVERBS_WRITE_EX(
4021                         IB_USER_VERBS_EX_CMD_MODIFY_WQ,
4022                         ib_uverbs_ex_modify_wq,
4023                         UAPI_DEF_WRITE_I_EX(struct ib_uverbs_ex_modify_wq,
4024                                             curr_wq_state),
4025                         UAPI_DEF_METHOD_NEEDS_FN(modify_wq))),
4026
4027         DECLARE_UVERBS_OBJECT(
4028                 UVERBS_OBJECT_SRQ,
4029                 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_SRQ,
4030                                      ib_uverbs_create_srq,
4031                                      UAPI_DEF_WRITE_UDATA_IO(
4032                                              struct ib_uverbs_create_srq,
4033                                              struct ib_uverbs_create_srq_resp),
4034                                      UAPI_DEF_METHOD_NEEDS_FN(create_srq)),
4035                 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_XSRQ,
4036                                      ib_uverbs_create_xsrq,
4037                                      UAPI_DEF_WRITE_UDATA_IO(
4038                                              struct ib_uverbs_create_xsrq,
4039                                              struct ib_uverbs_create_srq_resp),
4040                                      UAPI_DEF_METHOD_NEEDS_FN(create_srq)),
4041                 DECLARE_UVERBS_WRITE(
4042                         IB_USER_VERBS_CMD_DESTROY_SRQ,
4043                         ib_uverbs_destroy_srq,
4044                         UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_srq,
4045                                           struct ib_uverbs_destroy_srq_resp),
4046                         UAPI_DEF_METHOD_NEEDS_FN(destroy_srq)),
4047                 DECLARE_UVERBS_WRITE(
4048                         IB_USER_VERBS_CMD_MODIFY_SRQ,
4049                         ib_uverbs_modify_srq,
4050                         UAPI_DEF_WRITE_UDATA_I(struct ib_uverbs_modify_srq),
4051                         UAPI_DEF_METHOD_NEEDS_FN(modify_srq)),
4052                 DECLARE_UVERBS_WRITE(
4053                         IB_USER_VERBS_CMD_POST_SRQ_RECV,
4054                         ib_uverbs_post_srq_recv,
4055                         UAPI_DEF_WRITE_IO(struct ib_uverbs_post_srq_recv,
4056                                           struct ib_uverbs_post_srq_recv_resp),
4057                         UAPI_DEF_METHOD_NEEDS_FN(post_srq_recv)),
4058                 DECLARE_UVERBS_WRITE(
4059                         IB_USER_VERBS_CMD_QUERY_SRQ,
4060                         ib_uverbs_query_srq,
4061                         UAPI_DEF_WRITE_IO(struct ib_uverbs_query_srq,
4062                                           struct ib_uverbs_query_srq_resp),
4063                         UAPI_DEF_METHOD_NEEDS_FN(query_srq))),
4064
4065         DECLARE_UVERBS_OBJECT(
4066                 UVERBS_OBJECT_XRCD,
4067                 DECLARE_UVERBS_WRITE(
4068                         IB_USER_VERBS_CMD_CLOSE_XRCD,
4069                         ib_uverbs_close_xrcd,
4070                         UAPI_DEF_WRITE_I(struct ib_uverbs_close_xrcd),
4071                         UAPI_DEF_METHOD_NEEDS_FN(dealloc_xrcd)),
4072                 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_QP,
4073                                      ib_uverbs_open_qp,
4074                                      UAPI_DEF_WRITE_UDATA_IO(
4075                                              struct ib_uverbs_open_qp,
4076                                              struct ib_uverbs_create_qp_resp)),
4077                 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_XRCD,
4078                                      ib_uverbs_open_xrcd,
4079                                      UAPI_DEF_WRITE_UDATA_IO(
4080                                              struct ib_uverbs_open_xrcd,
4081                                              struct ib_uverbs_open_xrcd_resp),
4082                                      UAPI_DEF_METHOD_NEEDS_FN(alloc_xrcd))),
4083
4084         {},
4085 };