| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Roland Dreier | 4356 | 21.31% | 20 | 7.72% |
| Jason Gunthorpe | 4090 | 20.01% | 44 | 16.99% |
| Matan Barak | 1906 | 9.32% | 20 | 7.72% |
| Yishai Hadas | 1774 | 8.68% | 11 | 4.25% |
| Sean Hefty | 1651 | 8.08% | 9 | 3.47% |
| Hadar Hen Zion | 616 | 3.01% | 1 | 0.39% |
| Dotan Barak | 465 | 2.27% | 3 | 1.16% |
| Jack Morgenstein | 459 | 2.25% | 5 | 1.93% |
| Parav Pandit | 448 | 2.19% | 5 | 1.93% |
| Leon Romanovsky | 408 | 2.00% | 27 | 10.42% |
| Christoph Hellwig | 378 | 1.85% | 4 | 1.54% |
| Eran Ben Elisha | 342 | 1.67% | 2 | 0.77% |
| Maor Gottlieb | 291 | 1.42% | 3 | 1.16% |
| Moses Reuben | 273 | 1.34% | 3 | 1.16% |
| Raed Salem | 270 | 1.32% | 1 | 0.39% |
| Shani Michaelli | 249 | 1.22% | 1 | 0.39% |
| Eli Cohen | 248 | 1.21% | 5 | 1.93% |
| Dan Carpenter | 229 | 1.12% | 1 | 0.39% |
| Majd Dibbiny | 228 | 1.12% | 3 | 1.16% |
| Ariel Levkovich | 186 | 0.91% | 5 | 1.93% |
| Bodong Wang | 167 | 0.82% | 1 | 0.39% |
| Yonatan Cohen | 136 | 0.67% | 2 | 0.77% |
| Dasaratharaman Chandramouli | 129 | 0.63% | 5 | 1.93% |
| Artemy Kovalyov | 114 | 0.56% | 4 | 1.54% |
| Yann Droneaud | 86 | 0.42% | 7 | 2.70% |
| shamir rabinovitch | 79 | 0.39% | 4 | 1.54% |
| Noa Osherovich | 76 | 0.37% | 6 | 2.32% |
| Vlad Tsyrklevich | 67 | 0.33% | 1 | 0.39% |
| Haggai Eran | 62 | 0.30% | 1 | 0.39% |
| Daniel Jurgens | 52 | 0.25% | 2 | 0.77% |
| Marina Varshaver | 50 | 0.24% | 1 | 0.39% |
| Don Hiatt | 44 | 0.22% | 3 | 1.16% |
| Michael J. Ruhl | 44 | 0.22% | 1 | 0.39% |
| Al Viro | 35 | 0.17% | 3 | 1.16% |
| Sagi Grimberg | 35 | 0.17% | 1 | 0.39% |
| Slava Shwartsman | 34 | 0.17% | 1 | 0.39% |
| Gal Pressman | 33 | 0.16% | 3 | 1.16% |
| Mike Marciniszyn | 32 | 0.16% | 1 | 0.39% |
| Kamal Heib | 30 | 0.15% | 1 | 0.39% |
| Steve Wise | 29 | 0.14% | 4 | 1.54% |
| Avihai Horon | 26 | 0.13% | 1 | 0.39% |
| Boris Pismenny | 26 | 0.13% | 1 | 0.39% |
| Or Gerlitz | 22 | 0.11% | 2 | 0.77% |
| Mark Bloch | 21 | 0.10% | 2 | 0.77% |
| Arnd Bergmann | 20 | 0.10% | 1 | 0.39% |
| Bart Van Assche | 18 | 0.09% | 2 | 0.77% |
| Moni Shoua | 15 | 0.07% | 2 | 0.77% |
| Michael S. Tsirkin | 13 | 0.06% | 2 | 0.77% |
| Max Gurtovoy | 12 | 0.06% | 2 | 0.77% |
| Ralph Campbell | 11 | 0.05% | 2 | 0.77% |
| Mustafa Ismail | 10 | 0.05% | 1 | 0.39% |
| Moshe Lazer | 6 | 0.03% | 1 | 0.39% |
| Michal Kalderon | 6 | 0.03% | 1 | 0.39% |
| Matthew Wilcox | 4 | 0.02% | 1 | 0.39% |
| Bharat Potnuri | 4 | 0.02% | 1 | 0.39% |
| Latchesar Ionkov | 4 | 0.02% | 1 | 0.39% |
| Yuval Shaia | 3 | 0.01% | 1 | 0.39% |
| Ganapathi CH | 3 | 0.01% | 1 | 0.39% |
| Tejun Heo | 3 | 0.01% | 1 | 0.39% |
| Shachar Raindel | 3 | 0.01% | 1 | 0.39% |
| Michael Guralnik | 2 | 0.01% | 1 | 0.39% |
| Krishna Kumar | 2 | 0.01% | 1 | 0.39% |
| Vasyl Gomonovych | 1 | 0.00% | 1 | 0.39% |
| Ingo Molnar | 1 | 0.00% | 1 | 0.39% |
| Fengguang Wu | 1 | 0.00% | 1 | 0.39% |
| Linus Torvalds | 1 | 0.00% | 1 | 0.39% |
| Gustavo A. R. Silva | 1 | 0.00% | 1 | 0.39% |
| Total | 20440 | 259 |
/* * Copyright (c) 2005 Topspin Communications. All rights reserved. * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved. * Copyright (c) 2005 PathScale, Inc. All rights reserved. * Copyright (c) 2006 Mellanox Technologies. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include <linux/file.h> #include <linux/fs.h> #include <linux/slab.h> #include <linux/sched.h> #include <linux/uaccess.h> #include <rdma/uverbs_types.h> #include <rdma/uverbs_std_types.h> #include "rdma_core.h" #include "uverbs.h" #include "core_priv.h" /* * Copy a response to userspace. If the provided 'resp' is larger than the * user buffer it is silently truncated. If the user provided a larger buffer * then the trailing portion is zero filled. * * These semantics are intended to support future extension of the output * structures. */ static int uverbs_response(struct uverbs_attr_bundle *attrs, const void *resp, size_t resp_len) { int ret; if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT)) return uverbs_copy_to_struct_or_zero( attrs, UVERBS_ATTR_CORE_OUT, resp, resp_len); if (copy_to_user(attrs->ucore.outbuf, resp, min(attrs->ucore.outlen, resp_len))) return -EFAULT; if (resp_len < attrs->ucore.outlen) { /* * Zero fill any extra memory that user * space might have provided. */ ret = clear_user(attrs->ucore.outbuf + resp_len, attrs->ucore.outlen - resp_len); if (ret) return -EFAULT; } return 0; } /* * Copy a request from userspace. If the provided 'req' is larger than the * user buffer then the user buffer is zero extended into the 'req'. If 'req' * is smaller than the user buffer then the uncopied bytes in the user buffer * must be zero. */ static int uverbs_request(struct uverbs_attr_bundle *attrs, void *req, size_t req_len) { if (copy_from_user(req, attrs->ucore.inbuf, min(attrs->ucore.inlen, req_len))) return -EFAULT; if (attrs->ucore.inlen < req_len) { memset(req + attrs->ucore.inlen, 0, req_len - attrs->ucore.inlen); } else if (attrs->ucore.inlen > req_len) { if (!ib_is_buffer_cleared(attrs->ucore.inbuf + req_len, attrs->ucore.inlen - req_len)) return -EOPNOTSUPP; } return 0; } /* * Generate the value for the 'response_length' protocol used by write_ex. * This is the number of bytes the kernel actually wrote. Userspace can use * this to detect what structure members in the response the kernel * understood. */ static u32 uverbs_response_length(struct uverbs_attr_bundle *attrs, size_t resp_len) { return min_t(size_t, attrs->ucore.outlen, resp_len); } /* * The iterator version of the request interface is for handlers that need to * step over a flex array at the end of a command header. */ struct uverbs_req_iter { const void __user *cur; const void __user *end; }; static int uverbs_request_start(struct uverbs_attr_bundle *attrs, struct uverbs_req_iter *iter, void *req, size_t req_len) { if (attrs->ucore.inlen < req_len) return -ENOSPC; if (copy_from_user(req, attrs->ucore.inbuf, req_len)) return -EFAULT; iter->cur = attrs->ucore.inbuf + req_len; iter->end = attrs->ucore.inbuf + attrs->ucore.inlen; return 0; } static int uverbs_request_next(struct uverbs_req_iter *iter, void *val, size_t len) { if (iter->cur + len > iter->end) return -ENOSPC; if (copy_from_user(val, iter->cur, len)) return -EFAULT; iter->cur += len; return 0; } static const void __user *uverbs_request_next_ptr(struct uverbs_req_iter *iter, size_t len) { const void __user *res = iter->cur; if (iter->cur + len > iter->end) return (void __force __user *)ERR_PTR(-ENOSPC); iter->cur += len; return res; } static int uverbs_request_finish(struct uverbs_req_iter *iter) { if (!ib_is_buffer_cleared(iter->cur, iter->end - iter->cur)) return -EOPNOTSUPP; return 0; } /* * When calling a destroy function during an error unwind we need to pass in * the udata that is sanitized of all user arguments. Ie from the driver * perspective it looks like no udata was passed. */ struct ib_udata *uverbs_get_cleared_udata(struct uverbs_attr_bundle *attrs) { attrs->driver_udata = (struct ib_udata){}; return &attrs->driver_udata; } static struct ib_uverbs_completion_event_file * _ib_uverbs_lookup_comp_file(s32 fd, struct uverbs_attr_bundle *attrs) { struct ib_uobject *uobj = ufd_get_read(UVERBS_OBJECT_COMP_CHANNEL, fd, attrs); if (IS_ERR(uobj)) return (void *)uobj; uverbs_uobject_get(uobj); uobj_put_read(uobj); return container_of(uobj, struct ib_uverbs_completion_event_file, uobj); } #define ib_uverbs_lookup_comp_file(_fd, _ufile) \ _ib_uverbs_lookup_comp_file((_fd)*typecheck(s32, _fd), _ufile) int ib_alloc_ucontext(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_file *ufile = attrs->ufile; struct ib_ucontext *ucontext; struct ib_device *ib_dev; ib_dev = srcu_dereference(ufile->device->ib_dev, &ufile->device->disassociate_srcu); if (!ib_dev) return -EIO; ucontext = rdma_zalloc_drv_obj(ib_dev, ib_ucontext); if (!ucontext) return -ENOMEM; ucontext->res.type = RDMA_RESTRACK_CTX; ucontext->device = ib_dev; ucontext->ufile = ufile; xa_init_flags(&ucontext->mmap_xa, XA_FLAGS_ALLOC); attrs->context = ucontext; return 0; } int ib_init_ucontext(struct uverbs_attr_bundle *attrs) { struct ib_ucontext *ucontext = attrs->context; struct ib_uverbs_file *file = attrs->ufile; int ret; if (!down_read_trylock(&file->hw_destroy_rwsem)) return -EIO; mutex_lock(&file->ucontext_lock); if (file->ucontext) { ret = -EINVAL; goto err; } ret = ib_rdmacg_try_charge(&ucontext->cg_obj, ucontext->device, RDMACG_RESOURCE_HCA_HANDLE); if (ret) goto err; ret = ucontext->device->ops.alloc_ucontext(ucontext, &attrs->driver_udata); if (ret) goto err_uncharge; rdma_restrack_uadd(&ucontext->res); /* * Make sure that ib_uverbs_get_ucontext() sees the pointer update * only after all writes to setup the ucontext have completed */ smp_store_release(&file->ucontext, ucontext); mutex_unlock(&file->ucontext_lock); up_read(&file->hw_destroy_rwsem); return 0; err_uncharge: ib_rdmacg_uncharge(&ucontext->cg_obj, ucontext->device, RDMACG_RESOURCE_HCA_HANDLE); err: mutex_unlock(&file->ucontext_lock); up_read(&file->hw_destroy_rwsem); return ret; } static int ib_uverbs_get_context(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_get_context_resp resp; struct ib_uverbs_get_context cmd; struct ib_device *ib_dev; struct ib_uobject *uobj; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; ret = ib_alloc_ucontext(attrs); if (ret) return ret; uobj = uobj_alloc(UVERBS_OBJECT_ASYNC_EVENT, attrs, &ib_dev); if (IS_ERR(uobj)) { ret = PTR_ERR(uobj); goto err_ucontext; } resp = (struct ib_uverbs_get_context_resp){ .num_comp_vectors = attrs->ufile->device->num_comp_vectors, .async_fd = uobj->id, }; ret = uverbs_response(attrs, &resp, sizeof(resp)); if (ret) goto err_uobj; ret = ib_init_ucontext(attrs); if (ret) goto err_uobj; ib_uverbs_init_async_event_file( container_of(uobj, struct ib_uverbs_async_event_file, uobj)); rdma_alloc_commit_uobject(uobj, attrs); return 0; err_uobj: rdma_alloc_abort_uobject(uobj, attrs, false); err_ucontext: kfree(attrs->context); attrs->context = NULL; return ret; } static void copy_query_dev_fields(struct ib_ucontext *ucontext, struct ib_uverbs_query_device_resp *resp, struct ib_device_attr *attr) { struct ib_device *ib_dev = ucontext->device; resp->fw_ver = attr->fw_ver; resp->node_guid = ib_dev->node_guid; resp->sys_image_guid = attr->sys_image_guid; resp->max_mr_size = attr->max_mr_size; resp->page_size_cap = attr->page_size_cap; resp->vendor_id = attr->vendor_id; resp->vendor_part_id = attr->vendor_part_id; resp->hw_ver = attr->hw_ver; resp->max_qp = attr->max_qp; resp->max_qp_wr = attr->max_qp_wr; resp->device_cap_flags = lower_32_bits(attr->device_cap_flags); resp->max_sge = min(attr->max_send_sge, attr->max_recv_sge); resp->max_sge_rd = attr->max_sge_rd; resp->max_cq = attr->max_cq; resp->max_cqe = attr->max_cqe; resp->max_mr = attr->max_mr; resp->max_pd = attr->max_pd; resp->max_qp_rd_atom = attr->max_qp_rd_atom; resp->max_ee_rd_atom = attr->max_ee_rd_atom; resp->max_res_rd_atom = attr->max_res_rd_atom; resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom; resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom; resp->atomic_cap = attr->atomic_cap; resp->max_ee = attr->max_ee; resp->max_rdd = attr->max_rdd; resp->max_mw = attr->max_mw; resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp; resp->max_raw_ethy_qp = attr->max_raw_ethy_qp; resp->max_mcast_grp = attr->max_mcast_grp; resp->max_mcast_qp_attach = attr->max_mcast_qp_attach; resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach; resp->max_ah = attr->max_ah; resp->max_srq = attr->max_srq; resp->max_srq_wr = attr->max_srq_wr; resp->max_srq_sge = attr->max_srq_sge; resp->max_pkeys = attr->max_pkeys; resp->local_ca_ack_delay = attr->local_ca_ack_delay; resp->phys_port_cnt = ib_dev->phys_port_cnt; } static int ib_uverbs_query_device(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_query_device cmd; struct ib_uverbs_query_device_resp resp; struct ib_ucontext *ucontext; int ret; ucontext = ib_uverbs_get_ucontext(attrs); if (IS_ERR(ucontext)) return PTR_ERR(ucontext); ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; memset(&resp, 0, sizeof resp); copy_query_dev_fields(ucontext, &resp, &ucontext->device->attrs); return uverbs_response(attrs, &resp, sizeof(resp)); } static int ib_uverbs_query_port(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_query_port cmd; struct ib_uverbs_query_port_resp resp; struct ib_port_attr attr; int ret; struct ib_ucontext *ucontext; struct ib_device *ib_dev; ucontext = ib_uverbs_get_ucontext(attrs); if (IS_ERR(ucontext)) return PTR_ERR(ucontext); ib_dev = ucontext->device; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; ret = ib_query_port(ib_dev, cmd.port_num, &attr); if (ret) return ret; memset(&resp, 0, sizeof resp); copy_port_attr_to_resp(&attr, &resp, ib_dev, cmd.port_num); return uverbs_response(attrs, &resp, sizeof(resp)); } static int ib_uverbs_alloc_pd(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_alloc_pd cmd; struct ib_uverbs_alloc_pd_resp resp; struct ib_uobject *uobj; struct ib_pd *pd; int ret; struct ib_device *ib_dev; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; uobj = uobj_alloc(UVERBS_OBJECT_PD, attrs, &ib_dev); if (IS_ERR(uobj)) return PTR_ERR(uobj); pd = rdma_zalloc_drv_obj(ib_dev, ib_pd); if (!pd) { ret = -ENOMEM; goto err; } pd->device = ib_dev; pd->uobject = uobj; pd->__internal_mr = NULL; atomic_set(&pd->usecnt, 0); pd->res.type = RDMA_RESTRACK_PD; ret = ib_dev->ops.alloc_pd(pd, &attrs->driver_udata); if (ret) goto err_alloc; uobj->object = pd; memset(&resp, 0, sizeof resp); resp.pd_handle = uobj->id; rdma_restrack_uadd(&pd->res); ret = uverbs_response(attrs, &resp, sizeof(resp)); if (ret) goto err_copy; rdma_alloc_commit_uobject(uobj, attrs); return 0; err_copy: ib_dealloc_pd_user(pd, uverbs_get_cleared_udata(attrs)); pd = NULL; err_alloc: kfree(pd); err: uobj_alloc_abort(uobj, attrs); return ret; } static int ib_uverbs_dealloc_pd(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_dealloc_pd cmd; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; return uobj_perform_destroy(UVERBS_OBJECT_PD, cmd.pd_handle, attrs); } struct xrcd_table_entry { struct rb_node node; struct ib_xrcd *xrcd; struct inode *inode; }; static int xrcd_table_insert(struct ib_uverbs_device *dev, struct inode *inode, struct ib_xrcd *xrcd) { struct xrcd_table_entry *entry, *scan; struct rb_node **p = &dev->xrcd_tree.rb_node; struct rb_node *parent = NULL; entry = kmalloc(sizeof *entry, GFP_KERNEL); if (!entry) return -ENOMEM; entry->xrcd = xrcd; entry->inode = inode; while (*p) { parent = *p; scan = rb_entry(parent, struct xrcd_table_entry, node); if (inode < scan->inode) { p = &(*p)->rb_left; } else if (inode > scan->inode) { p = &(*p)->rb_right; } else { kfree(entry); return -EEXIST; } } rb_link_node(&entry->node, parent, p); rb_insert_color(&entry->node, &dev->xrcd_tree); igrab(inode); return 0; } static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev, struct inode *inode) { struct xrcd_table_entry *entry; struct rb_node *p = dev->xrcd_tree.rb_node; while (p) { entry = rb_entry(p, struct xrcd_table_entry, node); if (inode < entry->inode) p = p->rb_left; else if (inode > entry->inode) p = p->rb_right; else return entry; } return NULL; } static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode) { struct xrcd_table_entry *entry; entry = xrcd_table_search(dev, inode); if (!entry) return NULL; return entry->xrcd; } static void xrcd_table_delete(struct ib_uverbs_device *dev, struct inode *inode) { struct xrcd_table_entry *entry; entry = xrcd_table_search(dev, inode); if (entry) { iput(inode); rb_erase(&entry->node, &dev->xrcd_tree); kfree(entry); } } static int ib_uverbs_open_xrcd(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_device *ibudev = attrs->ufile->device; struct ib_uverbs_open_xrcd cmd; struct ib_uverbs_open_xrcd_resp resp; struct ib_uxrcd_object *obj; struct ib_xrcd *xrcd = NULL; struct fd f = {NULL, 0}; struct inode *inode = NULL; int ret = 0; int new_xrcd = 0; struct ib_device *ib_dev; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; mutex_lock(&ibudev->xrcd_tree_mutex); if (cmd.fd != -1) { /* search for file descriptor */ f = fdget(cmd.fd); if (!f.file) { ret = -EBADF; goto err_tree_mutex_unlock; } inode = file_inode(f.file); xrcd = find_xrcd(ibudev, inode); if (!xrcd && !(cmd.oflags & O_CREAT)) { /* no file descriptor. Need CREATE flag */ ret = -EAGAIN; goto err_tree_mutex_unlock; } if (xrcd && cmd.oflags & O_EXCL) { ret = -EINVAL; goto err_tree_mutex_unlock; } } obj = (struct ib_uxrcd_object *)uobj_alloc(UVERBS_OBJECT_XRCD, attrs, &ib_dev); if (IS_ERR(obj)) { ret = PTR_ERR(obj); goto err_tree_mutex_unlock; } if (!xrcd) { xrcd = ib_dev->ops.alloc_xrcd(ib_dev, &attrs->driver_udata); if (IS_ERR(xrcd)) { ret = PTR_ERR(xrcd); goto err; } xrcd->inode = inode; xrcd->device = ib_dev; atomic_set(&xrcd->usecnt, 0); mutex_init(&xrcd->tgt_qp_mutex); INIT_LIST_HEAD(&xrcd->tgt_qp_list); new_xrcd = 1; } atomic_set(&obj->refcnt, 0); obj->uobject.object = xrcd; memset(&resp, 0, sizeof resp); resp.xrcd_handle = obj->uobject.id; if (inode) { if (new_xrcd) { /* create new inode/xrcd table entry */ ret = xrcd_table_insert(ibudev, inode, xrcd); if (ret) goto err_dealloc_xrcd; } atomic_inc(&xrcd->usecnt); } ret = uverbs_response(attrs, &resp, sizeof(resp)); if (ret) goto err_copy; if (f.file) fdput(f); mutex_unlock(&ibudev->xrcd_tree_mutex); rdma_alloc_commit_uobject(&obj->uobject, attrs); return 0; err_copy: if (inode) { if (new_xrcd) xrcd_table_delete(ibudev, inode); atomic_dec(&xrcd->usecnt); } err_dealloc_xrcd: ib_dealloc_xrcd(xrcd, uverbs_get_cleared_udata(attrs)); err: uobj_alloc_abort(&obj->uobject, attrs); err_tree_mutex_unlock: if (f.file) fdput(f); mutex_unlock(&ibudev->xrcd_tree_mutex); return ret; } static int ib_uverbs_close_xrcd(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_close_xrcd cmd; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; return uobj_perform_destroy(UVERBS_OBJECT_XRCD, cmd.xrcd_handle, attrs); } int ib_uverbs_dealloc_xrcd(struct ib_uobject *uobject, struct ib_xrcd *xrcd, enum rdma_remove_reason why, struct uverbs_attr_bundle *attrs) { struct inode *inode; int ret; struct ib_uverbs_device *dev = attrs->ufile->device; inode = xrcd->inode; if (inode && !atomic_dec_and_test(&xrcd->usecnt)) return 0; ret = ib_dealloc_xrcd(xrcd, &attrs->driver_udata); if (ib_is_destroy_retryable(ret, why, uobject)) { atomic_inc(&xrcd->usecnt); return ret; } if (inode) xrcd_table_delete(dev, inode); return ret; } static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_reg_mr cmd; struct ib_uverbs_reg_mr_resp resp; struct ib_uobject *uobj; struct ib_pd *pd; struct ib_mr *mr; int ret; struct ib_device *ib_dev; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) return -EINVAL; ret = ib_check_mr_access(cmd.access_flags); if (ret) return ret; uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev); if (IS_ERR(uobj)) return PTR_ERR(uobj); pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); if (!pd) { ret = -EINVAL; goto err_free; } if (cmd.access_flags & IB_ACCESS_ON_DEMAND) { if (!(pd->device->attrs.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING)) { pr_debug("ODP support not available\n"); ret = -EINVAL; goto err_put; } } mr = pd->device->ops.reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, cmd.access_flags, &attrs->driver_udata); if (IS_ERR(mr)) { ret = PTR_ERR(mr); goto err_put; } mr->device = pd->device; mr->pd = pd; mr->type = IB_MR_TYPE_USER; mr->dm = NULL; mr->sig_attrs = NULL; mr->uobject = uobj; atomic_inc(&pd->usecnt); mr->res.type = RDMA_RESTRACK_MR; rdma_restrack_uadd(&mr->res); uobj->object = mr; memset(&resp, 0, sizeof resp); resp.lkey = mr->lkey; resp.rkey = mr->rkey; resp.mr_handle = uobj->id; ret = uverbs_response(attrs, &resp, sizeof(resp)); if (ret) goto err_copy; uobj_put_obj_read(pd); rdma_alloc_commit_uobject(uobj, attrs); return 0; err_copy: ib_dereg_mr_user(mr, uverbs_get_cleared_udata(attrs)); err_put: uobj_put_obj_read(pd); err_free: uobj_alloc_abort(uobj, attrs); return ret; } static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_rereg_mr cmd; struct ib_uverbs_rereg_mr_resp resp; struct ib_pd *pd = NULL; struct ib_mr *mr; struct ib_pd *old_pd; int ret; struct ib_uobject *uobj; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags) return -EINVAL; if ((cmd.flags & IB_MR_REREG_TRANS) && (!cmd.start || !cmd.hca_va || 0 >= cmd.length || (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))) return -EINVAL; uobj = uobj_get_write(UVERBS_OBJECT_MR, cmd.mr_handle, attrs); if (IS_ERR(uobj)) return PTR_ERR(uobj); mr = uobj->object; if (mr->dm) { ret = -EINVAL; goto put_uobjs; } if (cmd.flags & IB_MR_REREG_ACCESS) { ret = ib_check_mr_access(cmd.access_flags); if (ret) goto put_uobjs; } if (cmd.flags & IB_MR_REREG_PD) { pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); if (!pd) { ret = -EINVAL; goto put_uobjs; } } old_pd = mr->pd; ret = mr->device->ops.rereg_user_mr(mr, cmd.flags, cmd.start, cmd.length, cmd.hca_va, cmd.access_flags, pd, &attrs->driver_udata); if (ret) goto put_uobj_pd; if (cmd.flags & IB_MR_REREG_PD) { atomic_inc(&pd->usecnt); mr->pd = pd; atomic_dec(&old_pd->usecnt); } memset(&resp, 0, sizeof(resp)); resp.lkey = mr->lkey; resp.rkey = mr->rkey; ret = uverbs_response(attrs, &resp, sizeof(resp)); put_uobj_pd: if (cmd.flags & IB_MR_REREG_PD) uobj_put_obj_read(pd); put_uobjs: uobj_put_write(uobj); return ret; } static int ib_uverbs_dereg_mr(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_dereg_mr cmd; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; return uobj_perform_destroy(UVERBS_OBJECT_MR, cmd.mr_handle, attrs); } static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_alloc_mw cmd; struct ib_uverbs_alloc_mw_resp resp; struct ib_uobject *uobj; struct ib_pd *pd; struct ib_mw *mw; int ret; struct ib_device *ib_dev; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; uobj = uobj_alloc(UVERBS_OBJECT_MW, attrs, &ib_dev); if (IS_ERR(uobj)) return PTR_ERR(uobj); pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); if (!pd) { ret = -EINVAL; goto err_free; } if (cmd.mw_type != IB_MW_TYPE_1 && cmd.mw_type != IB_MW_TYPE_2) { ret = -EINVAL; goto err_put; } mw = pd->device->ops.alloc_mw(pd, cmd.mw_type, &attrs->driver_udata); if (IS_ERR(mw)) { ret = PTR_ERR(mw); goto err_put; } mw->device = pd->device; mw->pd = pd; mw->uobject = uobj; atomic_inc(&pd->usecnt); uobj->object = mw; memset(&resp, 0, sizeof(resp)); resp.rkey = mw->rkey; resp.mw_handle = uobj->id; ret = uverbs_response(attrs, &resp, sizeof(resp)); if (ret) goto err_copy; uobj_put_obj_read(pd); rdma_alloc_commit_uobject(uobj, attrs); return 0; err_copy: uverbs_dealloc_mw(mw); err_put: uobj_put_obj_read(pd); err_free: uobj_alloc_abort(uobj, attrs); return ret; } static int ib_uverbs_dealloc_mw(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_dealloc_mw cmd; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; return uobj_perform_destroy(UVERBS_OBJECT_MW, cmd.mw_handle, attrs); } static int ib_uverbs_create_comp_channel(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_create_comp_channel cmd; struct ib_uverbs_create_comp_channel_resp resp; struct ib_uobject *uobj; struct ib_uverbs_completion_event_file *ev_file; struct ib_device *ib_dev; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; uobj = uobj_alloc(UVERBS_OBJECT_COMP_CHANNEL, attrs, &ib_dev); if (IS_ERR(uobj)) return PTR_ERR(uobj); resp.fd = uobj->id; ev_file = container_of(uobj, struct ib_uverbs_completion_event_file, uobj); ib_uverbs_init_event_queue(&ev_file->ev_queue); ret = uverbs_response(attrs, &resp, sizeof(resp)); if (ret) { uobj_alloc_abort(uobj, attrs); return ret; } rdma_alloc_commit_uobject(uobj, attrs); return 0; } static struct ib_ucq_object *create_cq(struct uverbs_attr_bundle *attrs, struct ib_uverbs_ex_create_cq *cmd) { struct ib_ucq_object *obj; struct ib_uverbs_completion_event_file *ev_file = NULL; struct ib_cq *cq; int ret; struct ib_uverbs_ex_create_cq_resp resp; struct ib_cq_init_attr attr = {}; struct ib_device *ib_dev; if (cmd->comp_vector >= attrs->ufile->device->num_comp_vectors) return ERR_PTR(-EINVAL); obj = (struct ib_ucq_object *)uobj_alloc(UVERBS_OBJECT_CQ, attrs, &ib_dev); if (IS_ERR(obj)) return obj; if (cmd->comp_channel >= 0) { ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel, attrs); if (IS_ERR(ev_file)) { ret = PTR_ERR(ev_file); goto err; } } obj->uevent.uobject.user_handle = cmd->user_handle; INIT_LIST_HEAD(&obj->comp_list); INIT_LIST_HEAD(&obj->uevent.event_list); attr.cqe = cmd->cqe; attr.comp_vector = cmd->comp_vector; attr.flags = cmd->flags; cq = rdma_zalloc_drv_obj(ib_dev, ib_cq); if (!cq) { ret = -ENOMEM; goto err_file; } cq->device = ib_dev; cq->uobject = obj; cq->comp_handler = ib_uverbs_comp_handler; cq->event_handler = ib_uverbs_cq_event_handler; cq->cq_context = ev_file ? &ev_file->ev_queue : NULL; atomic_set(&cq->usecnt, 0); ret = ib_dev->ops.create_cq(cq, &attr, &attrs->driver_udata); if (ret) goto err_free; obj->uevent.uobject.object = cq; obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file); if (obj->uevent.event_file) uverbs_uobject_get(&obj->uevent.event_file->uobj); memset(&resp, 0, sizeof resp); resp.base.cq_handle = obj->uevent.uobject.id; resp.base.cqe = cq->cqe; resp.response_length = uverbs_response_length(attrs, sizeof(resp)); cq->res.type = RDMA_RESTRACK_CQ; rdma_restrack_uadd(&cq->res); ret = uverbs_response(attrs, &resp, sizeof(resp)); if (ret) goto err_cb; rdma_alloc_commit_uobject(&obj->uevent.uobject, attrs); return obj; err_cb: if (obj->uevent.event_file) uverbs_uobject_put(&obj->uevent.event_file->uobj); ib_destroy_cq_user(cq, uverbs_get_cleared_udata(attrs)); cq = NULL; err_free: kfree(cq); err_file: if (ev_file) ib_uverbs_release_ucq(ev_file, obj); err: uobj_alloc_abort(&obj->uevent.uobject, attrs); return ERR_PTR(ret); } static int ib_uverbs_create_cq(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_create_cq cmd; struct ib_uverbs_ex_create_cq cmd_ex; struct ib_ucq_object *obj; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; memset(&cmd_ex, 0, sizeof(cmd_ex)); cmd_ex.user_handle = cmd.user_handle; cmd_ex.cqe = cmd.cqe; cmd_ex.comp_vector = cmd.comp_vector; cmd_ex.comp_channel = cmd.comp_channel; obj = create_cq(attrs, &cmd_ex); return PTR_ERR_OR_ZERO(obj); } static int ib_uverbs_ex_create_cq(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_ex_create_cq cmd; struct ib_ucq_object *obj; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; if (cmd.comp_mask) return -EINVAL; if (cmd.reserved) return -EINVAL; obj = create_cq(attrs, &cmd); return PTR_ERR_OR_ZERO(obj); } static int ib_uverbs_resize_cq(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_resize_cq cmd; struct ib_uverbs_resize_cq_resp resp = {}; struct ib_cq *cq; int ret = -EINVAL; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); if (!cq) return -EINVAL; ret = cq->device->ops.resize_cq(cq, cmd.cqe, &attrs->driver_udata); if (ret) goto out; resp.cqe = cq->cqe; ret = uverbs_response(attrs, &resp, sizeof(resp)); out: rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); return ret; } static int copy_wc_to_user(struct ib_device *ib_dev, void __user *dest, struct ib_wc *wc) { struct ib_uverbs_wc tmp; tmp.wr_id = wc->wr_id; tmp.status = wc->status; tmp.opcode = wc->opcode; tmp.vendor_err = wc->vendor_err; tmp.byte_len = wc->byte_len; tmp.ex.imm_data = wc->ex.imm_data; tmp.qp_num = wc->qp->qp_num; tmp.src_qp = wc->src_qp; tmp.wc_flags = wc->wc_flags; tmp.pkey_index = wc->pkey_index; if (rdma_cap_opa_ah(ib_dev, wc->port_num)) tmp.slid = OPA_TO_IB_UCAST_LID(wc->slid); else tmp.slid = ib_lid_cpu16(wc->slid); tmp.sl = wc->sl; tmp.dlid_path_bits = wc->dlid_path_bits; tmp.port_num = wc->port_num; tmp.reserved = 0; if (copy_to_user(dest, &tmp, sizeof tmp)) return -EFAULT; return 0; } static int ib_uverbs_poll_cq(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_poll_cq cmd; struct ib_uverbs_poll_cq_resp resp; u8 __user *header_ptr; u8 __user *data_ptr; struct ib_cq *cq; struct ib_wc wc; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); if (!cq) return -EINVAL; /* we copy a struct ib_uverbs_poll_cq_resp to user space */ header_ptr = attrs->ucore.outbuf; data_ptr = header_ptr + sizeof resp; memset(&resp, 0, sizeof resp); while (resp.count < cmd.ne) { ret = ib_poll_cq(cq, 1, &wc); if (ret < 0) goto out_put; if (!ret) break; ret = copy_wc_to_user(cq->device, data_ptr, &wc); if (ret) goto out_put; data_ptr += sizeof(struct ib_uverbs_wc); ++resp.count; } if (copy_to_user(header_ptr, &resp, sizeof resp)) { ret = -EFAULT; goto out_put; } ret = 0; if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT)) ret = uverbs_output_written(attrs, UVERBS_ATTR_CORE_OUT); out_put: rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); return ret; } static int ib_uverbs_req_notify_cq(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_req_notify_cq cmd; struct ib_cq *cq; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); if (!cq) return -EINVAL; ib_req_notify_cq(cq, cmd.solicited_only ? IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); return 0; } static int ib_uverbs_destroy_cq(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_destroy_cq cmd; struct ib_uverbs_destroy_cq_resp resp; struct ib_uobject *uobj; struct ib_ucq_object *obj; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; uobj = uobj_get_destroy(UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); if (IS_ERR(uobj)) return PTR_ERR(uobj); obj = container_of(uobj, struct ib_ucq_object, uevent.uobject); memset(&resp, 0, sizeof(resp)); resp.comp_events_reported = obj->comp_events_reported; resp.async_events_reported = obj->uevent.events_reported; uobj_put_destroy(uobj); return uverbs_response(attrs, &resp, sizeof(resp)); } static int create_qp(struct uverbs_attr_bundle *attrs, struct ib_uverbs_ex_create_qp *cmd) { struct ib_uqp_object *obj; struct ib_device *device; struct ib_pd *pd = NULL; struct ib_xrcd *xrcd = NULL; struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT); struct ib_cq *scq = NULL, *rcq = NULL; struct ib_srq *srq = NULL; struct ib_qp *qp; struct ib_qp_init_attr attr = {}; struct ib_uverbs_ex_create_qp_resp resp; int ret; struct ib_rwq_ind_table *ind_tbl = NULL; bool has_sq = true; struct ib_device *ib_dev; if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW)) return -EPERM; obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs, &ib_dev); if (IS_ERR(obj)) return PTR_ERR(obj); obj->uxrcd = NULL; obj->uevent.uobject.user_handle = cmd->user_handle; mutex_init(&obj->mcast_lock); if (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE) { ind_tbl = uobj_get_obj_read(rwq_ind_table, UVERBS_OBJECT_RWQ_IND_TBL, cmd->rwq_ind_tbl_handle, attrs); if (!ind_tbl) { ret = -EINVAL; goto err_put; } attr.rwq_ind_tbl = ind_tbl; } if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) { ret = -EINVAL; goto err_put; } if (ind_tbl && !cmd->max_send_wr) has_sq = false; if (cmd->qp_type == IB_QPT_XRC_TGT) { xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->pd_handle, attrs); if (IS_ERR(xrcd_uobj)) { ret = -EINVAL; goto err_put; } xrcd = (struct ib_xrcd *)xrcd_uobj->object; if (!xrcd) { ret = -EINVAL; goto err_put; } device = xrcd->device; } else { if (cmd->qp_type == IB_QPT_XRC_INI) { cmd->max_recv_wr = 0; cmd->max_recv_sge = 0; } else { if (cmd->is_srq) { srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd->srq_handle, attrs); if (!srq || srq->srq_type == IB_SRQT_XRC) { ret = -EINVAL; goto err_put; } } if (!ind_tbl) { if (cmd->recv_cq_handle != cmd->send_cq_handle) { rcq = uobj_get_obj_read( cq, UVERBS_OBJECT_CQ, cmd->recv_cq_handle, attrs); if (!rcq) { ret = -EINVAL; goto err_put; } } } } if (has_sq) scq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd->send_cq_handle, attrs); if (!ind_tbl) rcq = rcq ?: scq; pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, attrs); if (!pd || (!scq && has_sq)) { ret = -EINVAL; goto err_put; } device = pd->device; } attr.event_handler = ib_uverbs_qp_event_handler; attr.send_cq = scq; attr.recv_cq = rcq; attr.srq = srq; attr.xrcd = xrcd; attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; attr.qp_type = cmd->qp_type; attr.create_flags = 0; attr.cap.max_send_wr = cmd->max_send_wr; attr.cap.max_recv_wr = cmd->max_recv_wr; attr.cap.max_send_sge = cmd->max_send_sge; attr.cap.max_recv_sge = cmd->max_recv_sge; attr.cap.max_inline_data = cmd->max_inline_data; INIT_LIST_HEAD(&obj->uevent.event_list); INIT_LIST_HEAD(&obj->mcast_list); attr.create_flags = cmd->create_flags; if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK | IB_QP_CREATE_CROSS_CHANNEL | IB_QP_CREATE_MANAGED_SEND | IB_QP_CREATE_MANAGED_RECV | IB_QP_CREATE_SCATTER_FCS | IB_QP_CREATE_CVLAN_STRIPPING | IB_QP_CREATE_SOURCE_QPN | IB_QP_CREATE_PCI_WRITE_END_PADDING)) { ret = -EINVAL; goto err_put; } if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) { if (!capable(CAP_NET_RAW)) { ret = -EPERM; goto err_put; } attr.source_qpn = cmd->source_qpn; } if (cmd->qp_type == IB_QPT_XRC_TGT) qp = ib_create_qp(pd, &attr); else qp = _ib_create_qp(device, pd, &attr, &attrs->driver_udata, obj); if (IS_ERR(qp)) { ret = PTR_ERR(qp); goto err_put; } if (cmd->qp_type != IB_QPT_XRC_TGT) { ret = ib_create_qp_security(qp, device); if (ret) goto err_cb; atomic_inc(&pd->usecnt); if (attr.send_cq) atomic_inc(&attr.send_cq->usecnt); if (attr.recv_cq) atomic_inc(&attr.recv_cq->usecnt); if (attr.srq) atomic_inc(&attr.srq->usecnt); if (ind_tbl) atomic_inc(&ind_tbl->usecnt); } else { /* It is done in _ib_create_qp for other QP types */ qp->uobject = obj; } obj->uevent.uobject.object = qp; obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file); if (obj->uevent.event_file) uverbs_uobject_get(&obj->uevent.event_file->uobj); memset(&resp, 0, sizeof resp); resp.base.qpn = qp->qp_num; resp.base.qp_handle = obj->uevent.uobject.id; resp.base.max_recv_sge = attr.cap.max_recv_sge; resp.base.max_send_sge = attr.cap.max_send_sge; resp.base.max_recv_wr = attr.cap.max_recv_wr; resp.base.max_send_wr = attr.cap.max_send_wr; resp.base.max_inline_data = attr.cap.max_inline_data; resp.response_length = uverbs_response_length(attrs, sizeof(resp)); ret = uverbs_response(attrs, &resp, sizeof(resp)); if (ret) goto err_uevent; if (xrcd) { obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); atomic_inc(&obj->uxrcd->refcnt); uobj_put_read(xrcd_uobj); } if (pd) uobj_put_obj_read(pd); if (scq) rdma_lookup_put_uobject(&scq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); if (rcq && rcq != scq) rdma_lookup_put_uobject(&rcq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); if (srq) rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); if (ind_tbl) uobj_put_obj_read(ind_tbl); rdma_alloc_commit_uobject(&obj->uevent.uobject, attrs); return 0; err_uevent: if (obj->uevent.event_file) uverbs_uobject_put(&obj->uevent.event_file->uobj); err_cb: ib_destroy_qp_user(qp, uverbs_get_cleared_udata(attrs)); err_put: if (!IS_ERR(xrcd_uobj)) uobj_put_read(xrcd_uobj); if (pd) uobj_put_obj_read(pd); if (scq) rdma_lookup_put_uobject(&scq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); if (rcq && rcq != scq) rdma_lookup_put_uobject(&rcq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); if (srq) rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); if (ind_tbl) uobj_put_obj_read(ind_tbl); uobj_alloc_abort(&obj->uevent.uobject, attrs); return ret; } static int ib_uverbs_create_qp(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_create_qp cmd; struct ib_uverbs_ex_create_qp cmd_ex; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; memset(&cmd_ex, 0, sizeof(cmd_ex)); cmd_ex.user_handle = cmd.user_handle; cmd_ex.pd_handle = cmd.pd_handle; cmd_ex.send_cq_handle = cmd.send_cq_handle; cmd_ex.recv_cq_handle = cmd.recv_cq_handle; cmd_ex.srq_handle = cmd.srq_handle; cmd_ex.max_send_wr = cmd.max_send_wr; cmd_ex.max_recv_wr = cmd.max_recv_wr; cmd_ex.max_send_sge = cmd.max_send_sge; cmd_ex.max_recv_sge = cmd.max_recv_sge; cmd_ex.max_inline_data = cmd.max_inline_data; cmd_ex.sq_sig_all = cmd.sq_sig_all; cmd_ex.qp_type = cmd.qp_type; cmd_ex.is_srq = cmd.is_srq; return create_qp(attrs, &cmd_ex); } static int ib_uverbs_ex_create_qp(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_ex_create_qp cmd; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK) return -EINVAL; if (cmd.reserved) return -EINVAL; return create_qp(attrs, &cmd); } static int ib_uverbs_open_qp(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_open_qp cmd; struct ib_uverbs_create_qp_resp resp; struct ib_uqp_object *obj; struct ib_xrcd *xrcd; struct ib_uobject *uninitialized_var(xrcd_uobj); struct ib_qp *qp; struct ib_qp_open_attr attr = {}; int ret; struct ib_device *ib_dev; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs, &ib_dev); if (IS_ERR(obj)) return PTR_ERR(obj); xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd.pd_handle, attrs); if (IS_ERR(xrcd_uobj)) { ret = -EINVAL; goto err_put; } xrcd = (struct ib_xrcd *)xrcd_uobj->object; if (!xrcd) { ret = -EINVAL; goto err_xrcd; } attr.event_handler = ib_uverbs_qp_event_handler; attr.qp_num = cmd.qpn; attr.qp_type = cmd.qp_type; INIT_LIST_HEAD(&obj->uevent.event_list); INIT_LIST_HEAD(&obj->mcast_list); qp = ib_open_qp(xrcd, &attr); if (IS_ERR(qp)) { ret = PTR_ERR(qp); goto err_xrcd; } obj->uevent.uobject.object = qp; obj->uevent.uobject.user_handle = cmd.user_handle; memset(&resp, 0, sizeof resp); resp.qpn = qp->qp_num; resp.qp_handle = obj->uevent.uobject.id; ret = uverbs_response(attrs, &resp, sizeof(resp)); if (ret) goto err_destroy; obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); atomic_inc(&obj->uxrcd->refcnt); qp->uobject = obj; uobj_put_read(xrcd_uobj); rdma_alloc_commit_uobject(&obj->uevent.uobject, attrs); return 0; err_destroy: ib_destroy_qp_user(qp, uverbs_get_cleared_udata(attrs)); err_xrcd: uobj_put_read(xrcd_uobj); err_put: uobj_alloc_abort(&obj->uevent.uobject, attrs); return ret; } static void copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest *uverb_attr, struct rdma_ah_attr *rdma_attr) { const struct ib_global_route *grh; uverb_attr->dlid = rdma_ah_get_dlid(rdma_attr); uverb_attr->sl = rdma_ah_get_sl(rdma_attr); uverb_attr->src_path_bits = rdma_ah_get_path_bits(rdma_attr); uverb_attr->static_rate = rdma_ah_get_static_rate(rdma_attr); uverb_attr->is_global = !!(rdma_ah_get_ah_flags(rdma_attr) & IB_AH_GRH); if (uverb_attr->is_global) { grh = rdma_ah_read_grh(rdma_attr); memcpy(uverb_attr->dgid, grh->dgid.raw, 16); uverb_attr->flow_label = grh->flow_label; uverb_attr->sgid_index = grh->sgid_index; uverb_attr->hop_limit = grh->hop_limit; uverb_attr->traffic_class = grh->traffic_class; } uverb_attr->port_num = rdma_ah_get_port_num(rdma_attr); } static int ib_uverbs_query_qp(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_query_qp cmd; struct ib_uverbs_query_qp_resp resp; struct ib_qp *qp; struct ib_qp_attr *attr; struct ib_qp_init_attr *init_attr; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; attr = kmalloc(sizeof *attr, GFP_KERNEL); init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); if (!attr || !init_attr) { ret = -ENOMEM; goto out; } qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); if (!qp) { ret = -EINVAL; goto out; } ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, UVERBS_LOOKUP_READ); if (ret) goto out; memset(&resp, 0, sizeof resp); resp.qp_state = attr->qp_state; resp.cur_qp_state = attr->cur_qp_state; resp.path_mtu = attr->path_mtu; resp.path_mig_state = attr->path_mig_state; resp.qkey = attr->qkey; resp.rq_psn = attr->rq_psn; resp.sq_psn = attr->sq_psn; resp.dest_qp_num = attr->dest_qp_num; resp.qp_access_flags = attr->qp_access_flags; resp.pkey_index = attr->pkey_index; resp.alt_pkey_index = attr->alt_pkey_index; resp.sq_draining = attr->sq_draining; resp.max_rd_atomic = attr->max_rd_atomic; resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; resp.min_rnr_timer = attr->min_rnr_timer; resp.port_num = attr->port_num; resp.timeout = attr->timeout; resp.retry_cnt = attr->retry_cnt; resp.rnr_retry = attr->rnr_retry; resp.alt_port_num = attr->alt_port_num; resp.alt_timeout = attr->alt_timeout; copy_ah_attr_to_uverbs(&resp.dest, &attr->ah_attr); copy_ah_attr_to_uverbs(&resp.alt_dest, &attr->alt_ah_attr); resp.max_send_wr = init_attr->cap.max_send_wr; resp.max_recv_wr = init_attr->cap.max_recv_wr; resp.max_send_sge = init_attr->cap.max_send_sge; resp.max_recv_sge = init_attr->cap.max_recv_sge; resp.max_inline_data = init_attr->cap.max_inline_data; resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; ret = uverbs_response(attrs, &resp, sizeof(resp)); out: kfree(attr); kfree(init_attr); return ret; } /* Remove ignored fields set in the attribute mask */ static int modify_qp_mask(enum ib_qp_type qp_type, int mask) { switch (qp_type) { case IB_QPT_XRC_INI: return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER); case IB_QPT_XRC_TGT: return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT | IB_QP_RNR_RETRY); default: return mask; } } static void copy_ah_attr_from_uverbs(struct ib_device *dev, struct rdma_ah_attr *rdma_attr, struct ib_uverbs_qp_dest *uverb_attr) { rdma_attr->type = rdma_ah_find_type(dev, uverb_attr->port_num); if (uverb_attr->is_global) { rdma_ah_set_grh(rdma_attr, NULL, uverb_attr->flow_label, uverb_attr->sgid_index, uverb_attr->hop_limit, uverb_attr->traffic_class); rdma_ah_set_dgid_raw(rdma_attr, uverb_attr->dgid); } else { rdma_ah_set_ah_flags(rdma_attr, 0); } rdma_ah_set_dlid(rdma_attr, uverb_attr->dlid); rdma_ah_set_sl(rdma_attr, uverb_attr->sl); rdma_ah_set_path_bits(rdma_attr, uverb_attr->src_path_bits); rdma_ah_set_static_rate(rdma_attr, uverb_attr->static_rate); rdma_ah_set_port_num(rdma_attr, uverb_attr->port_num); rdma_ah_set_make_grd(rdma_attr, false); } static int modify_qp(struct uverbs_attr_bundle *attrs, struct ib_uverbs_ex_modify_qp *cmd) { struct ib_qp_attr *attr; struct ib_qp *qp; int ret; attr = kzalloc(sizeof(*attr), GFP_KERNEL); if (!attr) return -ENOMEM; qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd->base.qp_handle, attrs); if (!qp) { ret = -EINVAL; goto out; } if ((cmd->base.attr_mask & IB_QP_PORT) && !rdma_is_port_valid(qp->device, cmd->base.port_num)) { ret = -EINVAL; goto release_qp; } if ((cmd->base.attr_mask & IB_QP_AV)) { if (!rdma_is_port_valid(qp->device, cmd->base.dest.port_num)) { ret = -EINVAL; goto release_qp; } if (cmd->base.attr_mask & IB_QP_STATE && cmd->base.qp_state == IB_QPS_RTR) { /* We are in INIT->RTR TRANSITION (if we are not, * this transition will be rejected in subsequent checks). * In the INIT->RTR transition, we cannot have IB_QP_PORT set, * but the IB_QP_STATE flag is required. * * Since kernel 3.14 (commit dbf727de7440), the uverbs driver, * when IB_QP_AV is set, has required inclusion of a valid * port number in the primary AV. (AVs are created and handled * differently for infiniband and ethernet (RoCE) ports). * * Check the port number included in the primary AV against * the port number in the qp struct, which was set (and saved) * in the RST->INIT transition. */ if (cmd->base.dest.port_num != qp->real_qp->port) { ret = -EINVAL; goto release_qp; } } else { /* We are in SQD->SQD. (If we are not, this transition will * be rejected later in the verbs layer checks). * Check for both IB_QP_PORT and IB_QP_AV, these can be set * together in the SQD->SQD transition. * * If only IP_QP_AV was set, add in IB_QP_PORT as well (the * verbs layer driver does not track primary port changes * resulting from path migration. Thus, in SQD, if the primary * AV is modified, the primary port should also be modified). * * Note that in this transition, the IB_QP_STATE flag * is not allowed. */ if (((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT)) == (IB_QP_AV | IB_QP_PORT)) && cmd->base.port_num != cmd->base.dest.port_num) { ret = -EINVAL; goto release_qp; } if ((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT)) == IB_QP_AV) { cmd->base.attr_mask |= IB_QP_PORT; cmd->base.port_num = cmd->base.dest.port_num; } } } if ((cmd->base.attr_mask & IB_QP_ALT_PATH) && (!rdma_is_port_valid(qp->device, cmd->base.alt_port_num) || !rdma_is_port_valid(qp->device, cmd->base.alt_dest.port_num) || cmd->base.alt_port_num != cmd->base.alt_dest.port_num)) { ret = -EINVAL; goto release_qp; } if ((cmd->base.attr_mask & IB_QP_CUR_STATE && cmd->base.cur_qp_state > IB_QPS_ERR) || (cmd->base.attr_mask & IB_QP_STATE && cmd->base.qp_state > IB_QPS_ERR)) { ret = -EINVAL; goto release_qp; } if (cmd->base.attr_mask & IB_QP_STATE) attr->qp_state = cmd->base.qp_state; if (cmd->base.attr_mask & IB_QP_CUR_STATE) attr->cur_qp_state = cmd->base.cur_qp_state; if (cmd->base.attr_mask & IB_QP_PATH_MTU) attr->path_mtu = cmd->base.path_mtu; if (cmd->base.attr_mask & IB_QP_PATH_MIG_STATE) attr->path_mig_state = cmd->base.path_mig_state; if (cmd->base.attr_mask & IB_QP_QKEY) attr->qkey = cmd->base.qkey; if (cmd->base.attr_mask & IB_QP_RQ_PSN) attr->rq_psn = cmd->base.rq_psn; if (cmd->base.attr_mask & IB_QP_SQ_PSN) attr->sq_psn = cmd->base.sq_psn; if (cmd->base.attr_mask & IB_QP_DEST_QPN) attr->dest_qp_num = cmd->base.dest_qp_num; if (cmd->base.attr_mask & IB_QP_ACCESS_FLAGS) attr->qp_access_flags = cmd->base.qp_access_flags; if (cmd->base.attr_mask & IB_QP_PKEY_INDEX) attr->pkey_index = cmd->base.pkey_index; if (cmd->base.attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify; if (cmd->base.attr_mask & IB_QP_MAX_QP_RD_ATOMIC) attr->max_rd_atomic = cmd->base.max_rd_atomic; if (cmd->base.attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic; if (cmd->base.attr_mask & IB_QP_MIN_RNR_TIMER) attr->min_rnr_timer = cmd->base.min_rnr_timer; if (cmd->base.attr_mask & IB_QP_PORT) attr->port_num = cmd->base.port_num; if (cmd->base.attr_mask & IB_QP_TIMEOUT) attr->timeout = cmd->base.timeout; if (cmd->base.attr_mask & IB_QP_RETRY_CNT) attr->retry_cnt = cmd->base.retry_cnt; if (cmd->base.attr_mask & IB_QP_RNR_RETRY) attr->rnr_retry = cmd->base.rnr_retry; if (cmd->base.attr_mask & IB_QP_ALT_PATH) { attr->alt_port_num = cmd->base.alt_port_num; attr->alt_timeout = cmd->base.alt_timeout; attr->alt_pkey_index = cmd->base.alt_pkey_index; } if (cmd->base.attr_mask & IB_QP_RATE_LIMIT) attr->rate_limit = cmd->rate_limit; if (cmd->base.attr_mask & IB_QP_AV) copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr, &cmd->base.dest); if (cmd->base.attr_mask & IB_QP_ALT_PATH) copy_ah_attr_from_uverbs(qp->device, &attr->alt_ah_attr, &cmd->base.alt_dest); ret = ib_modify_qp_with_udata(qp, attr, modify_qp_mask(qp->qp_type, cmd->base.attr_mask), &attrs->driver_udata); release_qp: rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, UVERBS_LOOKUP_READ); out: kfree(attr); return ret; } static int ib_uverbs_modify_qp(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_ex_modify_qp cmd; int ret; ret = uverbs_request(attrs, &cmd.base, sizeof(cmd.base)); if (ret) return ret; if (cmd.base.attr_mask & ~((IB_USER_LEGACY_LAST_QP_ATTR_MASK << 1) - 1)) return -EOPNOTSUPP; return modify_qp(attrs, &cmd); } static int ib_uverbs_ex_modify_qp(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_ex_modify_qp cmd; struct ib_uverbs_ex_modify_qp_resp resp = { .response_length = uverbs_response_length(attrs, sizeof(resp)) }; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; /* * Last bit is reserved for extending the attr_mask by * using another field. */ BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1 << 31)); if (cmd.base.attr_mask & ~((IB_USER_LAST_QP_ATTR_MASK << 1) - 1)) return -EOPNOTSUPP; ret = modify_qp(attrs, &cmd); if (ret) return ret; return uverbs_response(attrs, &resp, sizeof(resp)); } static int ib_uverbs_destroy_qp(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_destroy_qp cmd; struct ib_uverbs_destroy_qp_resp resp; struct ib_uobject *uobj; struct ib_uqp_object *obj; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; uobj = uobj_get_destroy(UVERBS_OBJECT_QP, cmd.qp_handle, attrs); if (IS_ERR(uobj)) return PTR_ERR(uobj); obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); memset(&resp, 0, sizeof(resp)); resp.events_reported = obj->uevent.events_reported; uobj_put_destroy(uobj); return uverbs_response(attrs, &resp, sizeof(resp)); } static void *alloc_wr(size_t wr_size, __u32 num_sge) { if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof (struct ib_sge))) / sizeof (struct ib_sge)) return NULL; return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) + num_sge * sizeof (struct ib_sge), GFP_KERNEL); } static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_post_send cmd; struct ib_uverbs_post_send_resp resp; struct ib_uverbs_send_wr *user_wr; struct ib_send_wr *wr = NULL, *last, *next; const struct ib_send_wr *bad_wr; struct ib_qp *qp; int i, sg_ind; int is_ud; int ret, ret2; size_t next_size; const struct ib_sge __user *sgls; const void __user *wqes; struct uverbs_req_iter iter; ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); if (ret) return ret; wqes = uverbs_request_next_ptr(&iter, cmd.wqe_size * cmd.wr_count); if (IS_ERR(wqes)) return PTR_ERR(wqes); sgls = uverbs_request_next_ptr( &iter, cmd.sge_count * sizeof(struct ib_uverbs_sge)); if (IS_ERR(sgls)) return PTR_ERR(sgls); ret = uverbs_request_finish(&iter); if (ret) return ret; user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); if (!user_wr) return -ENOMEM; qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); if (!qp) { ret = -EINVAL; goto out; } is_ud = qp->qp_type == IB_QPT_UD; sg_ind = 0; last = NULL; for (i = 0; i < cmd.wr_count; ++i) { if (copy_from_user(user_wr, wqes + i * cmd.wqe_size, cmd.wqe_size)) { ret = -EFAULT; goto out_put; } if (user_wr->num_sge + sg_ind > cmd.sge_count) { ret = -EINVAL; goto out_put; } if (is_ud) { struct ib_ud_wr *ud; if (user_wr->opcode != IB_WR_SEND && user_wr->opcode != IB_WR_SEND_WITH_IMM) { ret = -EINVAL; goto out_put; } next_size = sizeof(*ud); ud = alloc_wr(next_size, user_wr->num_sge); if (!ud) { ret = -ENOMEM; goto out_put; } ud->ah = uobj_get_obj_read(ah, UVERBS_OBJECT_AH, user_wr->wr.ud.ah, attrs); if (!ud->ah) { kfree(ud); ret = -EINVAL; goto out_put; } ud->remote_qpn = user_wr->wr.ud.remote_qpn; ud->remote_qkey = user_wr->wr.ud.remote_qkey; next = &ud->wr; } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM || user_wr->opcode == IB_WR_RDMA_WRITE || user_wr->opcode == IB_WR_RDMA_READ) { struct ib_rdma_wr *rdma; next_size = sizeof(*rdma); rdma = alloc_wr(next_size, user_wr->num_sge); if (!rdma) { ret = -ENOMEM; goto out_put; } rdma->remote_addr = user_wr->wr.rdma.remote_addr; rdma->rkey = user_wr->wr.rdma.rkey; next = &rdma->wr; } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP || user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) { struct ib_atomic_wr *atomic; next_size = sizeof(*atomic); atomic = alloc_wr(next_size, user_wr->num_sge); if (!atomic) { ret = -ENOMEM; goto out_put; } atomic->remote_addr = user_wr->wr.atomic.remote_addr; atomic->compare_add = user_wr->wr.atomic.compare_add; atomic->swap = user_wr->wr.atomic.swap; atomic->rkey = user_wr->wr.atomic.rkey; next = &atomic->wr; } else if (user_wr->opcode == IB_WR_SEND || user_wr->opcode == IB_WR_SEND_WITH_IMM || user_wr->opcode == IB_WR_SEND_WITH_INV) { next_size = sizeof(*next); next = alloc_wr(next_size, user_wr->num_sge); if (!next) { ret = -ENOMEM; goto out_put; } } else { ret = -EINVAL; goto out_put; } if (user_wr->opcode == IB_WR_SEND_WITH_IMM || user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) { next->ex.imm_data = (__be32 __force) user_wr->ex.imm_data; } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) { next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey; } if (!last) wr = next; else last->next = next; last = next; next->next = NULL; next->wr_id = user_wr->wr_id; next->num_sge = user_wr->num_sge; next->opcode = user_wr->opcode; next->send_flags = user_wr->send_flags; if (next->num_sge) { next->sg_list = (void *) next + ALIGN(next_size, sizeof(struct ib_sge)); if (copy_from_user(next->sg_list, sgls + sg_ind, next->num_sge * sizeof(struct ib_sge))) { ret = -EFAULT; goto out_put; } sg_ind += next->num_sge; } else next->sg_list = NULL; } resp.bad_wr = 0; ret = qp->device->ops.post_send(qp->real_qp, wr, &bad_wr); if (ret) for (next = wr; next; next = next->next) { ++resp.bad_wr; if (next == bad_wr) break; } ret2 = uverbs_response(attrs, &resp, sizeof(resp)); if (ret2) ret = ret2; out_put: rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, UVERBS_LOOKUP_READ); while (wr) { if (is_ud && ud_wr(wr)->ah) uobj_put_obj_read(ud_wr(wr)->ah); next = wr->next; kfree(wr); wr = next; } out: kfree(user_wr); return ret; } static struct ib_recv_wr * ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count, u32 wqe_size, u32 sge_count) { struct ib_uverbs_recv_wr *user_wr; struct ib_recv_wr *wr = NULL, *last, *next; int sg_ind; int i; int ret; const struct ib_sge __user *sgls; const void __user *wqes; if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) return ERR_PTR(-EINVAL); wqes = uverbs_request_next_ptr(iter, wqe_size * wr_count); if (IS_ERR(wqes)) return ERR_CAST(wqes); sgls = uverbs_request_next_ptr( iter, sge_count * sizeof(struct ib_uverbs_sge)); if (IS_ERR(sgls)) return ERR_CAST(sgls); ret = uverbs_request_finish(iter); if (ret) return ERR_PTR(ret); user_wr = kmalloc(wqe_size, GFP_KERNEL); if (!user_wr) return ERR_PTR(-ENOMEM); sg_ind = 0; last = NULL; for (i = 0; i < wr_count; ++i) { if (copy_from_user(user_wr, wqes + i * wqe_size, wqe_size)) { ret = -EFAULT; goto err; } if (user_wr->num_sge + sg_ind > sge_count) { ret = -EINVAL; goto err; } if (user_wr->num_sge >= (U32_MAX - ALIGN(sizeof *next, sizeof (struct ib_sge))) / sizeof (struct ib_sge)) { ret = -EINVAL; goto err; } next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + user_wr->num_sge * sizeof (struct ib_sge), GFP_KERNEL); if (!next) { ret = -ENOMEM; goto err; } if (!last) wr = next; else last->next = next; last = next; next->next = NULL; next->wr_id = user_wr->wr_id; next->num_sge = user_wr->num_sge; if (next->num_sge) { next->sg_list = (void *) next + ALIGN(sizeof *next, sizeof (struct ib_sge)); if (copy_from_user(next->sg_list, sgls + sg_ind, next->num_sge * sizeof(struct ib_sge))) { ret = -EFAULT; goto err; } sg_ind += next->num_sge; } else next->sg_list = NULL; } kfree(user_wr); return wr; err: kfree(user_wr); while (wr) { next = wr->next; kfree(wr); wr = next; } return ERR_PTR(ret); } static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_post_recv cmd; struct ib_uverbs_post_recv_resp resp; struct ib_recv_wr *wr, *next; const struct ib_recv_wr *bad_wr; struct ib_qp *qp; int ret, ret2; struct uverbs_req_iter iter; ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); if (ret) return ret; wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size, cmd.sge_count); if (IS_ERR(wr)) return PTR_ERR(wr); qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); if (!qp) { ret = -EINVAL; goto out; } resp.bad_wr = 0; ret = qp->device->ops.post_recv(qp->real_qp, wr, &bad_wr); rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, UVERBS_LOOKUP_READ); if (ret) { for (next = wr; next; next = next->next) { ++resp.bad_wr; if (next == bad_wr) break; } } ret2 = uverbs_response(attrs, &resp, sizeof(resp)); if (ret2) ret = ret2; out: while (wr) { next = wr->next; kfree(wr); wr = next; } return ret; } static int ib_uverbs_post_srq_recv(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_post_srq_recv cmd; struct ib_uverbs_post_srq_recv_resp resp; struct ib_recv_wr *wr, *next; const struct ib_recv_wr *bad_wr; struct ib_srq *srq; int ret, ret2; struct uverbs_req_iter iter; ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); if (ret) return ret; wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size, cmd.sge_count); if (IS_ERR(wr)) return PTR_ERR(wr); srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); if (!srq) { ret = -EINVAL; goto out; } resp.bad_wr = 0; ret = srq->device->ops.post_srq_recv(srq, wr, &bad_wr); rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); if (ret) for (next = wr; next; next = next->next) { ++resp.bad_wr; if (next == bad_wr) break; } ret2 = uverbs_response(attrs, &resp, sizeof(resp)); if (ret2) ret = ret2; out: while (wr) { next = wr->next; kfree(wr); wr = next; } return ret; } static int ib_uverbs_create_ah(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_create_ah cmd; struct ib_uverbs_create_ah_resp resp; struct ib_uobject *uobj; struct ib_pd *pd; struct ib_ah *ah; struct rdma_ah_attr attr = {}; int ret; struct ib_device *ib_dev; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; uobj = uobj_alloc(UVERBS_OBJECT_AH, attrs, &ib_dev); if (IS_ERR(uobj)) return PTR_ERR(uobj); if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num)) { ret = -EINVAL; goto err; } pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); if (!pd) { ret = -EINVAL; goto err; } attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num); rdma_ah_set_make_grd(&attr, false); rdma_ah_set_dlid(&attr, cmd.attr.dlid); rdma_ah_set_sl(&attr, cmd.attr.sl); rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits); rdma_ah_set_static_rate(&attr, cmd.attr.static_rate); rdma_ah_set_port_num(&attr, cmd.attr.port_num); if (cmd.attr.is_global) { rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label, cmd.attr.grh.sgid_index, cmd.attr.grh.hop_limit, cmd.attr.grh.traffic_class); rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid); } else { rdma_ah_set_ah_flags(&attr, 0); } ah = rdma_create_user_ah(pd, &attr, &attrs->driver_udata); if (IS_ERR(ah)) { ret = PTR_ERR(ah); goto err_put; } ah->uobject = uobj; uobj->user_handle = cmd.user_handle; uobj->object = ah; resp.ah_handle = uobj->id; ret = uverbs_response(attrs, &resp, sizeof(resp)); if (ret) goto err_copy; uobj_put_obj_read(pd); rdma_alloc_commit_uobject(uobj, attrs); return 0; err_copy: rdma_destroy_ah_user(ah, RDMA_DESTROY_AH_SLEEPABLE, uverbs_get_cleared_udata(attrs)); err_put: uobj_put_obj_read(pd); err: uobj_alloc_abort(uobj, attrs); return ret; } static int ib_uverbs_destroy_ah(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_destroy_ah cmd; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; return uobj_perform_destroy(UVERBS_OBJECT_AH, cmd.ah_handle, attrs); } static int ib_uverbs_attach_mcast(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_attach_mcast cmd; struct ib_qp *qp; struct ib_uqp_object *obj; struct ib_uverbs_mcast_entry *mcast; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); if (!qp) return -EINVAL; obj = qp->uobject; mutex_lock(&obj->mcast_lock); list_for_each_entry(mcast, &obj->mcast_list, list) if (cmd.mlid == mcast->lid && !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { ret = 0; goto out_put; } mcast = kmalloc(sizeof *mcast, GFP_KERNEL); if (!mcast) { ret = -ENOMEM; goto out_put; } mcast->lid = cmd.mlid; memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); if (!ret) list_add_tail(&mcast->list, &obj->mcast_list); else kfree(mcast); out_put: mutex_unlock(&obj->mcast_lock); rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, UVERBS_LOOKUP_READ); return ret; } static int ib_uverbs_detach_mcast(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_detach_mcast cmd; struct ib_uqp_object *obj; struct ib_qp *qp; struct ib_uverbs_mcast_entry *mcast; int ret; bool found = false; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); if (!qp) return -EINVAL; obj = qp->uobject; mutex_lock(&obj->mcast_lock); list_for_each_entry(mcast, &obj->mcast_list, list) if (cmd.mlid == mcast->lid && !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { list_del(&mcast->list); kfree(mcast); found = true; break; } if (!found) { ret = -EINVAL; goto out_put; } ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid); out_put: mutex_unlock(&obj->mcast_lock); rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, UVERBS_LOOKUP_READ); return ret; } struct ib_uflow_resources *flow_resources_alloc(size_t num_specs) { struct ib_uflow_resources *resources; resources = kzalloc(sizeof(*resources), GFP_KERNEL); if (!resources) return NULL; if (!num_specs) goto out; resources->counters = kcalloc(num_specs, sizeof(*resources->counters), GFP_KERNEL); resources->collection = kcalloc(num_specs, sizeof(*resources->collection), GFP_KERNEL); if (!resources->counters || !resources->collection) goto err; out: resources->max = num_specs; return resources; err: kfree(resources->counters); kfree(resources); return NULL; } EXPORT_SYMBOL(flow_resources_alloc); void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res) { unsigned int i; if (!uflow_res) return; for (i = 0; i < uflow_res->collection_num; i++) atomic_dec(&uflow_res->collection[i]->usecnt); for (i = 0; i < uflow_res->counters_num; i++) atomic_dec(&uflow_res->counters[i]->usecnt); kfree(uflow_res->collection); kfree(uflow_res->counters); kfree(uflow_res); } EXPORT_SYMBOL(ib_uverbs_flow_resources_free); void flow_resources_add(struct ib_uflow_resources *uflow_res, enum ib_flow_spec_type type, void *ibobj) { WARN_ON(uflow_res->num >= uflow_res->max); switch (type) { case IB_FLOW_SPEC_ACTION_HANDLE: atomic_inc(&((struct ib_flow_action *)ibobj)->usecnt); uflow_res->collection[uflow_res->collection_num++] = (struct ib_flow_action *)ibobj; break; case IB_FLOW_SPEC_ACTION_COUNT: atomic_inc(&((struct ib_counters *)ibobj)->usecnt); uflow_res->counters[uflow_res->counters_num++] = (struct ib_counters *)ibobj; break; default: WARN_ON(1); } uflow_res->num++; } EXPORT_SYMBOL(flow_resources_add); static int kern_spec_to_ib_spec_action(struct uverbs_attr_bundle *attrs, struct ib_uverbs_flow_spec *kern_spec, union ib_flow_spec *ib_spec, struct ib_uflow_resources *uflow_res) { ib_spec->type = kern_spec->type; switch (ib_spec->type) { case IB_FLOW_SPEC_ACTION_TAG: if (kern_spec->flow_tag.size != sizeof(struct ib_uverbs_flow_spec_action_tag)) return -EINVAL; ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag); ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id; break; case IB_FLOW_SPEC_ACTION_DROP: if (kern_spec->drop.size != sizeof(struct ib_uverbs_flow_spec_action_drop)) return -EINVAL; ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop); break; case IB_FLOW_SPEC_ACTION_HANDLE: if (kern_spec->action.size != sizeof(struct ib_uverbs_flow_spec_action_handle)) return -EOPNOTSUPP; ib_spec->action.act = uobj_get_obj_read(flow_action, UVERBS_OBJECT_FLOW_ACTION, kern_spec->action.handle, attrs); if (!ib_spec->action.act) return -EINVAL; ib_spec->action.size = sizeof(struct ib_flow_spec_action_handle); flow_resources_add(uflow_res, IB_FLOW_SPEC_ACTION_HANDLE, ib_spec->action.act); uobj_put_obj_read(ib_spec->action.act); break; case IB_FLOW_SPEC_ACTION_COUNT: if (kern_spec->flow_count.size != sizeof(struct ib_uverbs_flow_spec_action_count)) return -EINVAL; ib_spec->flow_count.counters = uobj_get_obj_read(counters, UVERBS_OBJECT_COUNTERS, kern_spec->flow_count.handle, attrs); if (!ib_spec->flow_count.counters) return -EINVAL; ib_spec->flow_count.size = sizeof(struct ib_flow_spec_action_count); flow_resources_add(uflow_res, IB_FLOW_SPEC_ACTION_COUNT, ib_spec->flow_count.counters); uobj_put_obj_read(ib_spec->flow_count.counters); break; default: return -EINVAL; } return 0; } static ssize_t spec_filter_size(const void *kern_spec_filter, u16 kern_filter_size, u16 ib_real_filter_sz) { /* * User space filter structures must be 64 bit aligned, otherwise this * may pass, but we won't handle additional new attributes. */ if (kern_filter_size > ib_real_filter_sz) { if (memchr_inv(kern_spec_filter + ib_real_filter_sz, 0, kern_filter_size - ib_real_filter_sz)) return -EINVAL; return ib_real_filter_sz; } return kern_filter_size; } int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type, const void *kern_spec_mask, const void *kern_spec_val, size_t kern_filter_sz, union ib_flow_spec *ib_spec) { ssize_t actual_filter_sz; ssize_t ib_filter_sz; /* User flow spec size must be aligned to 4 bytes */ if (kern_filter_sz != ALIGN(kern_filter_sz, 4)) return -EINVAL; ib_spec->type = type; if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL)) return -EINVAL; switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) { case IB_FLOW_SPEC_ETH: ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz); actual_filter_sz = spec_filter_size(kern_spec_mask, kern_filter_sz, ib_filter_sz); if (actual_filter_sz <= 0) return -EINVAL; ib_spec->size = sizeof(struct ib_flow_spec_eth); memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz); memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz); break; case IB_FLOW_SPEC_IPV4: ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz); actual_filter_sz = spec_filter_size(kern_spec_mask, kern_filter_sz, ib_filter_sz); if (actual_filter_sz <= 0) return -EINVAL; ib_spec->size = sizeof(struct ib_flow_spec_ipv4); memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz); memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz); break; case IB_FLOW_SPEC_IPV6: ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz); actual_filter_sz = spec_filter_size(kern_spec_mask, kern_filter_sz, ib_filter_sz); if (actual_filter_sz <= 0) return -EINVAL; ib_spec->size = sizeof(struct ib_flow_spec_ipv6); memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz); memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz); if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) || (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20)) return -EINVAL; break; case IB_FLOW_SPEC_TCP: case IB_FLOW_SPEC_UDP: ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz); actual_filter_sz = spec_filter_size(kern_spec_mask, kern_filter_sz, ib_filter_sz); if (actual_filter_sz <= 0) return -EINVAL; ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp); memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz); memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz); break; case IB_FLOW_SPEC_VXLAN_TUNNEL: ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz); actual_filter_sz = spec_filter_size(kern_spec_mask, kern_filter_sz, ib_filter_sz); if (actual_filter_sz <= 0) return -EINVAL; ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel); memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz); memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz); if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) || (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24)) return -EINVAL; break; case IB_FLOW_SPEC_ESP: ib_filter_sz = offsetof(struct ib_flow_esp_filter, real_sz); actual_filter_sz = spec_filter_size(kern_spec_mask, kern_filter_sz, ib_filter_sz); if (actual_filter_sz <= 0) return -EINVAL; ib_spec->esp.size = sizeof(struct ib_flow_spec_esp); memcpy(&ib_spec->esp.val, kern_spec_val, actual_filter_sz); memcpy(&ib_spec->esp.mask, kern_spec_mask, actual_filter_sz); break; case IB_FLOW_SPEC_GRE: ib_filter_sz = offsetof(struct ib_flow_gre_filter, real_sz); actual_filter_sz = spec_filter_size(kern_spec_mask, kern_filter_sz, ib_filter_sz); if (actual_filter_sz <= 0) return -EINVAL; ib_spec->gre.size = sizeof(struct ib_flow_spec_gre); memcpy(&ib_spec->gre.val, kern_spec_val, actual_filter_sz); memcpy(&ib_spec->gre.mask, kern_spec_mask, actual_filter_sz); break; case IB_FLOW_SPEC_MPLS: ib_filter_sz = offsetof(struct ib_flow_mpls_filter, real_sz); actual_filter_sz = spec_filter_size(kern_spec_mask, kern_filter_sz, ib_filter_sz); if (actual_filter_sz <= 0) return -EINVAL; ib_spec->mpls.size = sizeof(struct ib_flow_spec_mpls); memcpy(&ib_spec->mpls.val, kern_spec_val, actual_filter_sz); memcpy(&ib_spec->mpls.mask, kern_spec_mask, actual_filter_sz); break; default: return -EINVAL; } return 0; } static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec, union ib_flow_spec *ib_spec) { size_t kern_filter_sz; void *kern_spec_mask; void *kern_spec_val; if (check_sub_overflow((size_t)kern_spec->hdr.size, sizeof(struct ib_uverbs_flow_spec_hdr), &kern_filter_sz)) return -EINVAL; kern_filter_sz /= 2; kern_spec_val = (void *)kern_spec + sizeof(struct ib_uverbs_flow_spec_hdr); kern_spec_mask = kern_spec_val + kern_filter_sz; return ib_uverbs_kern_spec_to_ib_spec_filter(kern_spec->type, kern_spec_mask, kern_spec_val, kern_filter_sz, ib_spec); } static int kern_spec_to_ib_spec(struct uverbs_attr_bundle *attrs, struct ib_uverbs_flow_spec *kern_spec, union ib_flow_spec *ib_spec, struct ib_uflow_resources *uflow_res) { if (kern_spec->reserved) return -EINVAL; if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG) return kern_spec_to_ib_spec_action(attrs, kern_spec, ib_spec, uflow_res); else return kern_spec_to_ib_spec_filter(kern_spec, ib_spec); } static int ib_uverbs_ex_create_wq(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_ex_create_wq cmd; struct ib_uverbs_ex_create_wq_resp resp = {}; struct ib_uwq_object *obj; int err = 0; struct ib_cq *cq; struct ib_pd *pd; struct ib_wq *wq; struct ib_wq_init_attr wq_init_attr = {}; struct ib_device *ib_dev; err = uverbs_request(attrs, &cmd, sizeof(cmd)); if (err) return err; if (cmd.comp_mask) return -EOPNOTSUPP; obj = (struct ib_uwq_object *)uobj_alloc(UVERBS_OBJECT_WQ, attrs, &ib_dev); if (IS_ERR(obj)) return PTR_ERR(obj); pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); if (!pd) { err = -EINVAL; goto err_uobj; } cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); if (!cq) { err = -EINVAL; goto err_put_pd; } wq_init_attr.cq = cq; wq_init_attr.max_sge = cmd.max_sge; wq_init_attr.max_wr = cmd.max_wr; wq_init_attr.wq_type = cmd.wq_type; wq_init_attr.event_handler = ib_uverbs_wq_event_handler; wq_init_attr.create_flags = cmd.create_flags; INIT_LIST_HEAD(&obj->uevent.event_list); obj->uevent.uobject.user_handle = cmd.user_handle; wq = pd->device->ops.create_wq(pd, &wq_init_attr, &attrs->driver_udata); if (IS_ERR(wq)) { err = PTR_ERR(wq); goto err_put_cq; } wq->uobject = obj; obj->uevent.uobject.object = wq; wq->wq_type = wq_init_attr.wq_type; wq->cq = cq; wq->pd = pd; wq->device = pd->device; atomic_set(&wq->usecnt, 0); atomic_inc(&pd->usecnt); atomic_inc(&cq->usecnt); obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file); if (obj->uevent.event_file) uverbs_uobject_get(&obj->uevent.event_file->uobj); memset(&resp, 0, sizeof(resp)); resp.wq_handle = obj->uevent.uobject.id; resp.max_sge = wq_init_attr.max_sge; resp.max_wr = wq_init_attr.max_wr; resp.wqn = wq->wq_num; resp.response_length = uverbs_response_length(attrs, sizeof(resp)); err = uverbs_response(attrs, &resp, sizeof(resp)); if (err) goto err_copy; uobj_put_obj_read(pd); rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); rdma_alloc_commit_uobject(&obj->uevent.uobject, attrs); return 0; err_copy: if (obj->uevent.event_file) uverbs_uobject_put(&obj->uevent.event_file->uobj); ib_destroy_wq(wq, uverbs_get_cleared_udata(attrs)); err_put_cq: rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); err_put_pd: uobj_put_obj_read(pd); err_uobj: uobj_alloc_abort(&obj->uevent.uobject, attrs); return err; } static int ib_uverbs_ex_destroy_wq(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_ex_destroy_wq cmd; struct ib_uverbs_ex_destroy_wq_resp resp = {}; struct ib_uobject *uobj; struct ib_uwq_object *obj; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; if (cmd.comp_mask) return -EOPNOTSUPP; resp.response_length = uverbs_response_length(attrs, sizeof(resp)); uobj = uobj_get_destroy(UVERBS_OBJECT_WQ, cmd.wq_handle, attrs); if (IS_ERR(uobj)) return PTR_ERR(uobj); obj = container_of(uobj, struct ib_uwq_object, uevent.uobject); resp.events_reported = obj->uevent.events_reported; uobj_put_destroy(uobj); return uverbs_response(attrs, &resp, sizeof(resp)); } static int ib_uverbs_ex_modify_wq(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_ex_modify_wq cmd; struct ib_wq *wq; struct ib_wq_attr wq_attr = {}; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; if (!cmd.attr_mask) return -EINVAL; if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS)) return -EINVAL; wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, cmd.wq_handle, attrs); if (!wq) return -EINVAL; wq_attr.curr_wq_state = cmd.curr_wq_state; wq_attr.wq_state = cmd.wq_state; if (cmd.attr_mask & IB_WQ_FLAGS) { wq_attr.flags = cmd.flags; wq_attr.flags_mask = cmd.flags_mask; } ret = wq->device->ops.modify_wq(wq, &wq_attr, cmd.attr_mask, &attrs->driver_udata); rdma_lookup_put_uobject(&wq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); return ret; } static int ib_uverbs_ex_create_rwq_ind_table(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_ex_create_rwq_ind_table cmd; struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {}; struct ib_uobject *uobj; int err; struct ib_rwq_ind_table_init_attr init_attr = {}; struct ib_rwq_ind_table *rwq_ind_tbl; struct ib_wq **wqs = NULL; u32 *wqs_handles = NULL; struct ib_wq *wq = NULL; int i, j, num_read_wqs; u32 num_wq_handles; struct uverbs_req_iter iter; struct ib_device *ib_dev; err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); if (err) return err; if (cmd.comp_mask) return -EOPNOTSUPP; if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE) return -EINVAL; num_wq_handles = 1 << cmd.log_ind_tbl_size; wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles), GFP_KERNEL); if (!wqs_handles) return -ENOMEM; err = uverbs_request_next(&iter, wqs_handles, num_wq_handles * sizeof(__u32)); if (err) goto err_free; err = uverbs_request_finish(&iter); if (err) goto err_free; wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL); if (!wqs) { err = -ENOMEM; goto err_free; } for (num_read_wqs = 0; num_read_wqs < num_wq_handles; num_read_wqs++) { wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, wqs_handles[num_read_wqs], attrs); if (!wq) { err = -EINVAL; goto put_wqs; } wqs[num_read_wqs] = wq; } uobj = uobj_alloc(UVERBS_OBJECT_RWQ_IND_TBL, attrs, &ib_dev); if (IS_ERR(uobj)) { err = PTR_ERR(uobj); goto put_wqs; } init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size; init_attr.ind_tbl = wqs; rwq_ind_tbl = ib_dev->ops.create_rwq_ind_table(ib_dev, &init_attr, &attrs->driver_udata); if (IS_ERR(rwq_ind_tbl)) { err = PTR_ERR(rwq_ind_tbl); goto err_uobj; } rwq_ind_tbl->ind_tbl = wqs; rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size; rwq_ind_tbl->uobject = uobj; uobj->object = rwq_ind_tbl; rwq_ind_tbl->device = ib_dev; atomic_set(&rwq_ind_tbl->usecnt, 0); for (i = 0; i < num_wq_handles; i++) atomic_inc(&wqs[i]->usecnt); resp.ind_tbl_handle = uobj->id; resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num; resp.response_length = uverbs_response_length(attrs, sizeof(resp)); err = uverbs_response(attrs, &resp, sizeof(resp)); if (err) goto err_copy; kfree(wqs_handles); for (j = 0; j < num_read_wqs; j++) rdma_lookup_put_uobject(&wqs[j]->uobject->uevent.uobject, UVERBS_LOOKUP_READ); rdma_alloc_commit_uobject(uobj, attrs); return 0; err_copy: ib_destroy_rwq_ind_table(rwq_ind_tbl); err_uobj: uobj_alloc_abort(uobj, attrs); put_wqs: for (j = 0; j < num_read_wqs; j++) rdma_lookup_put_uobject(&wqs[j]->uobject->uevent.uobject, UVERBS_LOOKUP_READ); err_free: kfree(wqs_handles); kfree(wqs); return err; } static int ib_uverbs_ex_destroy_rwq_ind_table(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_ex_destroy_rwq_ind_table cmd; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; if (cmd.comp_mask) return -EOPNOTSUPP; return uobj_perform_destroy(UVERBS_OBJECT_RWQ_IND_TBL, cmd.ind_tbl_handle, attrs); } static int ib_uverbs_ex_create_flow(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_create_flow cmd; struct ib_uverbs_create_flow_resp resp; struct ib_uobject *uobj; struct ib_flow *flow_id; struct ib_uverbs_flow_attr *kern_flow_attr; struct ib_flow_attr *flow_attr; struct ib_qp *qp; struct ib_uflow_resources *uflow_res; struct ib_uverbs_flow_spec_hdr *kern_spec; struct uverbs_req_iter iter; int err; void *ib_spec; int i; struct ib_device *ib_dev; err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); if (err) return err; if (cmd.comp_mask) return -EINVAL; if (!capable(CAP_NET_RAW)) return -EPERM; if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED) return -EINVAL; if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) && ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) || (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT))) return -EINVAL; if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS) return -EINVAL; if (cmd.flow_attr.size > (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec))) return -EINVAL; if (cmd.flow_attr.reserved[0] || cmd.flow_attr.reserved[1]) return -EINVAL; if (cmd.flow_attr.num_of_specs) { kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size, GFP_KERNEL); if (!kern_flow_attr) return -ENOMEM; *kern_flow_attr = cmd.flow_attr; err = uverbs_request_next(&iter, &kern_flow_attr->flow_specs, cmd.flow_attr.size); if (err) goto err_free_attr; } else { kern_flow_attr = &cmd.flow_attr; } err = uverbs_request_finish(&iter); if (err) goto err_free_attr; uobj = uobj_alloc(UVERBS_OBJECT_FLOW, attrs, &ib_dev); if (IS_ERR(uobj)) { err = PTR_ERR(uobj); goto err_free_attr; } qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); if (!qp) { err = -EINVAL; goto err_uobj; } if (qp->qp_type != IB_QPT_UD && qp->qp_type != IB_QPT_RAW_PACKET) { err = -EINVAL; goto err_put; } flow_attr = kzalloc(struct_size(flow_attr, flows, cmd.flow_attr.num_of_specs), GFP_KERNEL); if (!flow_attr) { err = -ENOMEM; goto err_put; } uflow_res = flow_resources_alloc(cmd.flow_attr.num_of_specs); if (!uflow_res) { err = -ENOMEM; goto err_free_flow_attr; } flow_attr->type = kern_flow_attr->type; flow_attr->priority = kern_flow_attr->priority; flow_attr->num_of_specs = kern_flow_attr->num_of_specs; flow_attr->port = kern_flow_attr->port; flow_attr->flags = kern_flow_attr->flags; flow_attr->size = sizeof(*flow_attr); kern_spec = kern_flow_attr->flow_specs; ib_spec = flow_attr + 1; for (i = 0; i < flow_attr->num_of_specs && cmd.flow_attr.size >= sizeof(*kern_spec) && cmd.flow_attr.size >= kern_spec->size; i++) { err = kern_spec_to_ib_spec( attrs, (struct ib_uverbs_flow_spec *)kern_spec, ib_spec, uflow_res); if (err) goto err_free; flow_attr->size += ((union ib_flow_spec *) ib_spec)->size; cmd.flow_attr.size -= kern_spec->size; kern_spec = ((void *)kern_spec) + kern_spec->size; ib_spec += ((union ib_flow_spec *) ib_spec)->size; } if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) { pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n", i, cmd.flow_attr.size); err = -EINVAL; goto err_free; } flow_id = qp->device->ops.create_flow( qp, flow_attr, IB_FLOW_DOMAIN_USER, &attrs->driver_udata); if (IS_ERR(flow_id)) { err = PTR_ERR(flow_id); goto err_free; } ib_set_flow(uobj, flow_id, qp, qp->device, uflow_res); memset(&resp, 0, sizeof(resp)); resp.flow_handle = uobj->id; err = uverbs_response(attrs, &resp, sizeof(resp)); if (err) goto err_copy; rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, UVERBS_LOOKUP_READ); kfree(flow_attr); if (cmd.flow_attr.num_of_specs) kfree(kern_flow_attr); rdma_alloc_commit_uobject(uobj, attrs); return 0; err_copy: if (!qp->device->ops.destroy_flow(flow_id)) atomic_dec(&qp->usecnt); err_free: ib_uverbs_flow_resources_free(uflow_res); err_free_flow_attr: kfree(flow_attr); err_put: rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, UVERBS_LOOKUP_READ); err_uobj: uobj_alloc_abort(uobj, attrs); err_free_attr: if (cmd.flow_attr.num_of_specs) kfree(kern_flow_attr); return err; } static int ib_uverbs_ex_destroy_flow(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_destroy_flow cmd; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; if (cmd.comp_mask) return -EINVAL; return uobj_perform_destroy(UVERBS_OBJECT_FLOW, cmd.flow_handle, attrs); } static int __uverbs_create_xsrq(struct uverbs_attr_bundle *attrs, struct ib_uverbs_create_xsrq *cmd, struct ib_udata *udata) { struct ib_uverbs_create_srq_resp resp; struct ib_usrq_object *obj; struct ib_pd *pd; struct ib_srq *srq; struct ib_uobject *uninitialized_var(xrcd_uobj); struct ib_srq_init_attr attr; int ret; struct ib_device *ib_dev; obj = (struct ib_usrq_object *)uobj_alloc(UVERBS_OBJECT_SRQ, attrs, &ib_dev); if (IS_ERR(obj)) return PTR_ERR(obj); if (cmd->srq_type == IB_SRQT_TM) attr.ext.tag_matching.max_num_tags = cmd->max_num_tags; if (cmd->srq_type == IB_SRQT_XRC) { xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->xrcd_handle, attrs); if (IS_ERR(xrcd_uobj)) { ret = -EINVAL; goto err; } attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object; if (!attr.ext.xrc.xrcd) { ret = -EINVAL; goto err_put_xrcd; } obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); atomic_inc(&obj->uxrcd->refcnt); } if (ib_srq_has_cq(cmd->srq_type)) { attr.ext.cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd->cq_handle, attrs); if (!attr.ext.cq) { ret = -EINVAL; goto err_put_xrcd; } } pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, attrs); if (!pd) { ret = -EINVAL; goto err_put_cq; } attr.event_handler = ib_uverbs_srq_event_handler; attr.srq_type = cmd->srq_type; attr.attr.max_wr = cmd->max_wr; attr.attr.max_sge = cmd->max_sge; attr.attr.srq_limit = cmd->srq_limit; INIT_LIST_HEAD(&obj->uevent.event_list); obj->uevent.uobject.user_handle = cmd->user_handle; srq = ib_create_srq_user(pd, &attr, obj, udata); if (IS_ERR(srq)) { ret = PTR_ERR(srq); goto err_put_pd; } obj->uevent.uobject.object = srq; obj->uevent.uobject.user_handle = cmd->user_handle; obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file); if (obj->uevent.event_file) uverbs_uobject_get(&obj->uevent.event_file->uobj); memset(&resp, 0, sizeof resp); resp.srq_handle = obj->uevent.uobject.id; resp.max_wr = attr.attr.max_wr; resp.max_sge = attr.attr.max_sge; if (cmd->srq_type == IB_SRQT_XRC) resp.srqn = srq->ext.xrc.srq_num; ret = uverbs_response(attrs, &resp, sizeof(resp)); if (ret) goto err_copy; if (cmd->srq_type == IB_SRQT_XRC) uobj_put_read(xrcd_uobj); if (ib_srq_has_cq(cmd->srq_type)) rdma_lookup_put_uobject(&attr.ext.cq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); uobj_put_obj_read(pd); rdma_alloc_commit_uobject(&obj->uevent.uobject, attrs); return 0; err_copy: if (obj->uevent.event_file) uverbs_uobject_put(&obj->uevent.event_file->uobj); ib_destroy_srq_user(srq, uverbs_get_cleared_udata(attrs)); err_put_pd: uobj_put_obj_read(pd); err_put_cq: if (ib_srq_has_cq(cmd->srq_type)) rdma_lookup_put_uobject(&attr.ext.cq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); err_put_xrcd: if (cmd->srq_type == IB_SRQT_XRC) { atomic_dec(&obj->uxrcd->refcnt); uobj_put_read(xrcd_uobj); } err: uobj_alloc_abort(&obj->uevent.uobject, attrs); return ret; } static int ib_uverbs_create_srq(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_create_srq cmd; struct ib_uverbs_create_xsrq xcmd; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; memset(&xcmd, 0, sizeof(xcmd)); xcmd.response = cmd.response; xcmd.user_handle = cmd.user_handle; xcmd.srq_type = IB_SRQT_BASIC; xcmd.pd_handle = cmd.pd_handle; xcmd.max_wr = cmd.max_wr; xcmd.max_sge = cmd.max_sge; xcmd.srq_limit = cmd.srq_limit; return __uverbs_create_xsrq(attrs, &xcmd, &attrs->driver_udata); } static int ib_uverbs_create_xsrq(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_create_xsrq cmd; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; return __uverbs_create_xsrq(attrs, &cmd, &attrs->driver_udata); } static int ib_uverbs_modify_srq(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_modify_srq cmd; struct ib_srq *srq; struct ib_srq_attr attr; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); if (!srq) return -EINVAL; attr.max_wr = cmd.max_wr; attr.srq_limit = cmd.srq_limit; ret = srq->device->ops.modify_srq(srq, &attr, cmd.attr_mask, &attrs->driver_udata); rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); return ret; } static int ib_uverbs_query_srq(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_query_srq cmd; struct ib_uverbs_query_srq_resp resp; struct ib_srq_attr attr; struct ib_srq *srq; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); if (!srq) return -EINVAL; ret = ib_query_srq(srq, &attr); rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); if (ret) return ret; memset(&resp, 0, sizeof resp); resp.max_wr = attr.max_wr; resp.max_sge = attr.max_sge; resp.srq_limit = attr.srq_limit; return uverbs_response(attrs, &resp, sizeof(resp)); } static int ib_uverbs_destroy_srq(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_destroy_srq cmd; struct ib_uverbs_destroy_srq_resp resp; struct ib_uobject *uobj; struct ib_uevent_object *obj; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; uobj = uobj_get_destroy(UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); if (IS_ERR(uobj)) return PTR_ERR(uobj); obj = container_of(uobj, struct ib_uevent_object, uobject); memset(&resp, 0, sizeof(resp)); resp.events_reported = obj->events_reported; uobj_put_destroy(uobj); return uverbs_response(attrs, &resp, sizeof(resp)); } static int ib_uverbs_ex_query_device(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_ex_query_device_resp resp = {}; struct ib_uverbs_ex_query_device cmd; struct ib_device_attr attr = {0}; struct ib_ucontext *ucontext; struct ib_device *ib_dev; int err; ucontext = ib_uverbs_get_ucontext(attrs); if (IS_ERR(ucontext)) return PTR_ERR(ucontext); ib_dev = ucontext->device; err = uverbs_request(attrs, &cmd, sizeof(cmd)); if (err) return err; if (cmd.comp_mask) return -EINVAL; if (cmd.reserved) return -EINVAL; err = ib_dev->ops.query_device(ib_dev, &attr, &attrs->driver_udata); if (err) return err; copy_query_dev_fields(ucontext, &resp.base, &attr); resp.odp_caps.general_caps = attr.odp_caps.general_caps; resp.odp_caps.per_transport_caps.rc_odp_caps = attr.odp_caps.per_transport_caps.rc_odp_caps; resp.odp_caps.per_transport_caps.uc_odp_caps = attr.odp_caps.per_transport_caps.uc_odp_caps; resp.odp_caps.per_transport_caps.ud_odp_caps = attr.odp_caps.per_transport_caps.ud_odp_caps; resp.xrc_odp_caps = attr.odp_caps.per_transport_caps.xrc_odp_caps; resp.timestamp_mask = attr.timestamp_mask; resp.hca_core_clock = attr.hca_core_clock; resp.device_cap_flags_ex = attr.device_cap_flags; resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts; resp.rss_caps.max_rwq_indirection_tables = attr.rss_caps.max_rwq_indirection_tables; resp.rss_caps.max_rwq_indirection_table_size = attr.rss_caps.max_rwq_indirection_table_size; resp.max_wq_type_rq = attr.max_wq_type_rq; resp.raw_packet_caps = attr.raw_packet_caps; resp.tm_caps.max_rndv_hdr_size = attr.tm_caps.max_rndv_hdr_size; resp.tm_caps.max_num_tags = attr.tm_caps.max_num_tags; resp.tm_caps.max_ops = attr.tm_caps.max_ops; resp.tm_caps.max_sge = attr.tm_caps.max_sge; resp.tm_caps.flags = attr.tm_caps.flags; resp.cq_moderation_caps.max_cq_moderation_count = attr.cq_caps.max_cq_moderation_count; resp.cq_moderation_caps.max_cq_moderation_period = attr.cq_caps.max_cq_moderation_period; resp.max_dm_size = attr.max_dm_size; resp.response_length = uverbs_response_length(attrs, sizeof(resp)); return uverbs_response(attrs, &resp, sizeof(resp)); } static int ib_uverbs_ex_modify_cq(struct uverbs_attr_bundle *attrs) { struct ib_uverbs_ex_modify_cq cmd; struct ib_cq *cq; int ret; ret = uverbs_request(attrs, &cmd, sizeof(cmd)); if (ret) return ret; if (!cmd.attr_mask || cmd.reserved) return -EINVAL; if (cmd.attr_mask > IB_CQ_MODERATE) return -EOPNOTSUPP; cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); if (!cq) return -EINVAL; ret = rdma_set_cq_moderation(cq, cmd.attr.cq_count, cmd.attr.cq_period); rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, UVERBS_LOOKUP_READ); return ret; } /* * Describe the input structs for write(). Some write methods have an input * only struct, most have an input and output. If the struct has an output then * the 'response' u64 must be the first field in the request structure. * * If udata is present then both the request and response structs have a * trailing driver_data flex array. In this case the size of the base struct * cannot be changed. */ #define UAPI_DEF_WRITE_IO(req, resp) \ .write.has_resp = 1 + \ BUILD_BUG_ON_ZERO(offsetof(req, response) != 0) + \ BUILD_BUG_ON_ZERO(sizeof_field(req, response) != \ sizeof(u64)), \ .write.req_size = sizeof(req), .write.resp_size = sizeof(resp) #define UAPI_DEF_WRITE_I(req) .write.req_size = sizeof(req) #define UAPI_DEF_WRITE_UDATA_IO(req, resp) \ UAPI_DEF_WRITE_IO(req, resp), \ .write.has_udata = \ 1 + \ BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \ sizeof(req)) + \ BUILD_BUG_ON_ZERO(offsetof(resp, driver_data) != \ sizeof(resp)) #define UAPI_DEF_WRITE_UDATA_I(req) \ UAPI_DEF_WRITE_I(req), \ .write.has_udata = \ 1 + BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \ sizeof(req)) /* * The _EX versions are for use with WRITE_EX and allow the last struct member * to be specified. Buffers that do not include that member will be rejected. */ #define UAPI_DEF_WRITE_IO_EX(req, req_last_member, resp, resp_last_member) \ .write.has_resp = 1, \ .write.req_size = offsetofend(req, req_last_member), \ .write.resp_size = offsetofend(resp, resp_last_member) #define UAPI_DEF_WRITE_I_EX(req, req_last_member) \ .write.req_size = offsetofend(req, req_last_member) const struct uapi_definition uverbs_def_write_intf[] = { DECLARE_UVERBS_OBJECT( UVERBS_OBJECT_AH, DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_AH, ib_uverbs_create_ah, UAPI_DEF_WRITE_UDATA_IO( struct ib_uverbs_create_ah, struct ib_uverbs_create_ah_resp), UAPI_DEF_METHOD_NEEDS_FN(create_ah)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_DESTROY_AH, ib_uverbs_destroy_ah, UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_ah), UAPI_DEF_METHOD_NEEDS_FN(destroy_ah))), DECLARE_UVERBS_OBJECT( UVERBS_OBJECT_COMP_CHANNEL, DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL, ib_uverbs_create_comp_channel, UAPI_DEF_WRITE_IO( struct ib_uverbs_create_comp_channel, struct ib_uverbs_create_comp_channel_resp))), DECLARE_UVERBS_OBJECT( UVERBS_OBJECT_CQ, DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_CQ, ib_uverbs_create_cq, UAPI_DEF_WRITE_UDATA_IO( struct ib_uverbs_create_cq, struct ib_uverbs_create_cq_resp), UAPI_DEF_METHOD_NEEDS_FN(create_cq)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_DESTROY_CQ, ib_uverbs_destroy_cq, UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_cq, struct ib_uverbs_destroy_cq_resp), UAPI_DEF_METHOD_NEEDS_FN(destroy_cq)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_POLL_CQ, ib_uverbs_poll_cq, UAPI_DEF_WRITE_IO(struct ib_uverbs_poll_cq, struct ib_uverbs_poll_cq_resp), UAPI_DEF_METHOD_NEEDS_FN(poll_cq)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_REQ_NOTIFY_CQ, ib_uverbs_req_notify_cq, UAPI_DEF_WRITE_I(struct ib_uverbs_req_notify_cq), UAPI_DEF_METHOD_NEEDS_FN(req_notify_cq)), DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_RESIZE_CQ, ib_uverbs_resize_cq, UAPI_DEF_WRITE_UDATA_IO( struct ib_uverbs_resize_cq, struct ib_uverbs_resize_cq_resp), UAPI_DEF_METHOD_NEEDS_FN(resize_cq)), DECLARE_UVERBS_WRITE_EX( IB_USER_VERBS_EX_CMD_CREATE_CQ, ib_uverbs_ex_create_cq, UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_cq, reserved, struct ib_uverbs_ex_create_cq_resp, response_length), UAPI_DEF_METHOD_NEEDS_FN(create_cq)), DECLARE_UVERBS_WRITE_EX( IB_USER_VERBS_EX_CMD_MODIFY_CQ, ib_uverbs_ex_modify_cq, UAPI_DEF_WRITE_I(struct ib_uverbs_ex_modify_cq), UAPI_DEF_METHOD_NEEDS_FN(create_cq))), DECLARE_UVERBS_OBJECT( UVERBS_OBJECT_DEVICE, DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_GET_CONTEXT, ib_uverbs_get_context, UAPI_DEF_WRITE_UDATA_IO( struct ib_uverbs_get_context, struct ib_uverbs_get_context_resp)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_QUERY_DEVICE, ib_uverbs_query_device, UAPI_DEF_WRITE_IO(struct ib_uverbs_query_device, struct ib_uverbs_query_device_resp)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_QUERY_PORT, ib_uverbs_query_port, UAPI_DEF_WRITE_IO(struct ib_uverbs_query_port, struct ib_uverbs_query_port_resp), UAPI_DEF_METHOD_NEEDS_FN(query_port)), DECLARE_UVERBS_WRITE_EX( IB_USER_VERBS_EX_CMD_QUERY_DEVICE, ib_uverbs_ex_query_device, UAPI_DEF_WRITE_IO_EX( struct ib_uverbs_ex_query_device, reserved, struct ib_uverbs_ex_query_device_resp, response_length), UAPI_DEF_METHOD_NEEDS_FN(query_device)), UAPI_DEF_OBJ_NEEDS_FN(alloc_ucontext), UAPI_DEF_OBJ_NEEDS_FN(dealloc_ucontext)), DECLARE_UVERBS_OBJECT( UVERBS_OBJECT_FLOW, DECLARE_UVERBS_WRITE_EX( IB_USER_VERBS_EX_CMD_CREATE_FLOW, ib_uverbs_ex_create_flow, UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_create_flow, flow_attr, struct ib_uverbs_create_flow_resp, flow_handle), UAPI_DEF_METHOD_NEEDS_FN(create_flow)), DECLARE_UVERBS_WRITE_EX( IB_USER_VERBS_EX_CMD_DESTROY_FLOW, ib_uverbs_ex_destroy_flow, UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_flow), UAPI_DEF_METHOD_NEEDS_FN(destroy_flow))), DECLARE_UVERBS_OBJECT( UVERBS_OBJECT_MR, DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_DEREG_MR, ib_uverbs_dereg_mr, UAPI_DEF_WRITE_I(struct ib_uverbs_dereg_mr), UAPI_DEF_METHOD_NEEDS_FN(dereg_mr)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_REG_MR, ib_uverbs_reg_mr, UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_reg_mr, struct ib_uverbs_reg_mr_resp), UAPI_DEF_METHOD_NEEDS_FN(reg_user_mr)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_REREG_MR, ib_uverbs_rereg_mr, UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_rereg_mr, struct ib_uverbs_rereg_mr_resp), UAPI_DEF_METHOD_NEEDS_FN(rereg_user_mr))), DECLARE_UVERBS_OBJECT( UVERBS_OBJECT_MW, DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_ALLOC_MW, ib_uverbs_alloc_mw, UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_mw, struct ib_uverbs_alloc_mw_resp), UAPI_DEF_METHOD_NEEDS_FN(alloc_mw)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_DEALLOC_MW, ib_uverbs_dealloc_mw, UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_mw), UAPI_DEF_METHOD_NEEDS_FN(dealloc_mw))), DECLARE_UVERBS_OBJECT( UVERBS_OBJECT_PD, DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_ALLOC_PD, ib_uverbs_alloc_pd, UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_pd, struct ib_uverbs_alloc_pd_resp), UAPI_DEF_METHOD_NEEDS_FN(alloc_pd)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_DEALLOC_PD, ib_uverbs_dealloc_pd, UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_pd), UAPI_DEF_METHOD_NEEDS_FN(dealloc_pd))), DECLARE_UVERBS_OBJECT( UVERBS_OBJECT_QP, DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_ATTACH_MCAST, ib_uverbs_attach_mcast, UAPI_DEF_WRITE_I(struct ib_uverbs_attach_mcast), UAPI_DEF_METHOD_NEEDS_FN(attach_mcast), UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)), DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_QP, ib_uverbs_create_qp, UAPI_DEF_WRITE_UDATA_IO( struct ib_uverbs_create_qp, struct ib_uverbs_create_qp_resp), UAPI_DEF_METHOD_NEEDS_FN(create_qp)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_DESTROY_QP, ib_uverbs_destroy_qp, UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_qp, struct ib_uverbs_destroy_qp_resp), UAPI_DEF_METHOD_NEEDS_FN(destroy_qp)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_DETACH_MCAST, ib_uverbs_detach_mcast, UAPI_DEF_WRITE_I(struct ib_uverbs_detach_mcast), UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_MODIFY_QP, ib_uverbs_modify_qp, UAPI_DEF_WRITE_I(struct ib_uverbs_modify_qp), UAPI_DEF_METHOD_NEEDS_FN(modify_qp)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_POST_RECV, ib_uverbs_post_recv, UAPI_DEF_WRITE_IO(struct ib_uverbs_post_recv, struct ib_uverbs_post_recv_resp), UAPI_DEF_METHOD_NEEDS_FN(post_recv)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_POST_SEND, ib_uverbs_post_send, UAPI_DEF_WRITE_IO(struct ib_uverbs_post_send, struct ib_uverbs_post_send_resp), UAPI_DEF_METHOD_NEEDS_FN(post_send)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_QUERY_QP, ib_uverbs_query_qp, UAPI_DEF_WRITE_IO(struct ib_uverbs_query_qp, struct ib_uverbs_query_qp_resp), UAPI_DEF_METHOD_NEEDS_FN(query_qp)), DECLARE_UVERBS_WRITE_EX( IB_USER_VERBS_EX_CMD_CREATE_QP, ib_uverbs_ex_create_qp, UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_qp, comp_mask, struct ib_uverbs_ex_create_qp_resp, response_length), UAPI_DEF_METHOD_NEEDS_FN(create_qp)), DECLARE_UVERBS_WRITE_EX( IB_USER_VERBS_EX_CMD_MODIFY_QP, ib_uverbs_ex_modify_qp, UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_modify_qp, base, struct ib_uverbs_ex_modify_qp_resp, response_length), UAPI_DEF_METHOD_NEEDS_FN(modify_qp))), DECLARE_UVERBS_OBJECT( UVERBS_OBJECT_RWQ_IND_TBL, DECLARE_UVERBS_WRITE_EX( IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL, ib_uverbs_ex_create_rwq_ind_table, UAPI_DEF_WRITE_IO_EX( struct ib_uverbs_ex_create_rwq_ind_table, log_ind_tbl_size, struct ib_uverbs_ex_create_rwq_ind_table_resp, ind_tbl_num), UAPI_DEF_METHOD_NEEDS_FN(create_rwq_ind_table)), DECLARE_UVERBS_WRITE_EX( IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL, ib_uverbs_ex_destroy_rwq_ind_table, UAPI_DEF_WRITE_I( struct ib_uverbs_ex_destroy_rwq_ind_table), UAPI_DEF_METHOD_NEEDS_FN(destroy_rwq_ind_table))), DECLARE_UVERBS_OBJECT( UVERBS_OBJECT_WQ, DECLARE_UVERBS_WRITE_EX( IB_USER_VERBS_EX_CMD_CREATE_WQ, ib_uverbs_ex_create_wq, UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_wq, max_sge, struct ib_uverbs_ex_create_wq_resp, wqn), UAPI_DEF_METHOD_NEEDS_FN(create_wq)), DECLARE_UVERBS_WRITE_EX( IB_USER_VERBS_EX_CMD_DESTROY_WQ, ib_uverbs_ex_destroy_wq, UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_destroy_wq, wq_handle, struct ib_uverbs_ex_destroy_wq_resp, reserved), UAPI_DEF_METHOD_NEEDS_FN(destroy_wq)), DECLARE_UVERBS_WRITE_EX( IB_USER_VERBS_EX_CMD_MODIFY_WQ, ib_uverbs_ex_modify_wq, UAPI_DEF_WRITE_I_EX(struct ib_uverbs_ex_modify_wq, curr_wq_state), UAPI_DEF_METHOD_NEEDS_FN(modify_wq))), DECLARE_UVERBS_OBJECT( UVERBS_OBJECT_SRQ, DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_SRQ, ib_uverbs_create_srq, UAPI_DEF_WRITE_UDATA_IO( struct ib_uverbs_create_srq, struct ib_uverbs_create_srq_resp), UAPI_DEF_METHOD_NEEDS_FN(create_srq)), DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_XSRQ, ib_uverbs_create_xsrq, UAPI_DEF_WRITE_UDATA_IO( struct ib_uverbs_create_xsrq, struct ib_uverbs_create_srq_resp), UAPI_DEF_METHOD_NEEDS_FN(create_srq)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_DESTROY_SRQ, ib_uverbs_destroy_srq, UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_srq, struct ib_uverbs_destroy_srq_resp), UAPI_DEF_METHOD_NEEDS_FN(destroy_srq)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_MODIFY_SRQ, ib_uverbs_modify_srq, UAPI_DEF_WRITE_UDATA_I(struct ib_uverbs_modify_srq), UAPI_DEF_METHOD_NEEDS_FN(modify_srq)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_POST_SRQ_RECV, ib_uverbs_post_srq_recv, UAPI_DEF_WRITE_IO(struct ib_uverbs_post_srq_recv, struct ib_uverbs_post_srq_recv_resp), UAPI_DEF_METHOD_NEEDS_FN(post_srq_recv)), DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_QUERY_SRQ, ib_uverbs_query_srq, UAPI_DEF_WRITE_IO(struct ib_uverbs_query_srq, struct ib_uverbs_query_srq_resp), UAPI_DEF_METHOD_NEEDS_FN(query_srq))), DECLARE_UVERBS_OBJECT( UVERBS_OBJECT_XRCD, DECLARE_UVERBS_WRITE( IB_USER_VERBS_CMD_CLOSE_XRCD, ib_uverbs_close_xrcd, UAPI_DEF_WRITE_I(struct ib_uverbs_close_xrcd), UAPI_DEF_METHOD_NEEDS_FN(dealloc_xrcd)), DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_QP, ib_uverbs_open_qp, UAPI_DEF_WRITE_UDATA_IO( struct ib_uverbs_open_qp, struct ib_uverbs_create_qp_resp)), DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_XRCD, ib_uverbs_open_xrcd, UAPI_DEF_WRITE_UDATA_IO( struct ib_uverbs_open_xrcd, struct ib_uverbs_open_xrcd_resp), UAPI_DEF_METHOD_NEEDS_FN(alloc_xrcd))), {}, };
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