| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Roland Dreier | 5843 | 26.84% | 20 | 9.26% |
| Matan Barak | 2634 | 12.10% | 20 | 9.26% |
| Yishai Hadas | 2355 | 10.82% | 10 | 4.63% |
| Sean Hefty | 2133 | 9.80% | 9 | 4.17% |
| Eran Ben Elisha | 825 | 3.79% | 2 | 0.93% |
| Hadar Hen Zion | 646 | 2.97% | 1 | 0.46% |
| Dotan Barak | 548 | 2.52% | 3 | 1.39% |
| Jason Gunthorpe | 523 | 2.40% | 16 | 7.41% |
| Parav Pandit | 471 | 2.16% | 5 | 2.31% |
| Jack Morgenstein | 471 | 2.16% | 5 | 2.31% |
| Christoph Hellwig | 378 | 1.74% | 4 | 1.85% |
| Eli Cohen | 352 | 1.62% | 5 | 2.31% |
| Bodong Wang | 351 | 1.61% | 1 | 0.46% |
| Leon Romanovsky | 340 | 1.56% | 21 | 9.72% |
| Shani Michaelli | 324 | 1.49% | 1 | 0.46% |
| Maor Gottlieb | 318 | 1.46% | 3 | 1.39% |
| Majd Dibbiny | 277 | 1.27% | 4 | 1.85% |
| Moses Reuben | 273 | 1.25% | 3 | 1.39% |
| Raed Salem | 270 | 1.24% | 1 | 0.46% |
| Yonatan Cohen | 263 | 1.21% | 2 | 0.93% |
| Dan Carpenter | 256 | 1.18% | 1 | 0.46% |
| Ariel Levkovich | 211 | 0.97% | 5 | 2.31% |
| Artemy Kovalyov | 178 | 0.82% | 4 | 1.85% |
| Yann Droneaud | 163 | 0.75% | 8 | 3.70% |
| Dasaratharaman Chandramouli | 159 | 0.73% | 7 | 3.24% |
| Haggai Eran | 138 | 0.63% | 2 | 0.93% |
| Arnd Bergmann | 125 | 0.57% | 1 | 0.46% |
| Ram Amrani | 124 | 0.57% | 1 | 0.46% |
| Noa Osherovich | 114 | 0.52% | 5 | 2.31% |
| Vlad Tsyrklevich | 67 | 0.31% | 1 | 0.46% |
| Al Viro | 60 | 0.28% | 3 | 1.39% |
| Daniel Jurgens | 52 | 0.24% | 2 | 0.93% |
| Marina Varshaver | 50 | 0.23% | 1 | 0.46% |
| Don Hiatt | 50 | 0.23% | 3 | 1.39% |
| Michael J. Ruhl | 44 | 0.20% | 1 | 0.46% |
| Moni Shoua | 43 | 0.20% | 2 | 0.93% |
| Ralph Campbell | 38 | 0.17% | 3 | 1.39% |
| Sagi Grimberg | 35 | 0.16% | 1 | 0.46% |
| Steve Wise | 35 | 0.16% | 4 | 1.85% |
| Slava Shwartsman | 34 | 0.16% | 1 | 0.46% |
| Mike Marciniszyn | 32 | 0.15% | 1 | 0.46% |
| Boris Pismenny | 26 | 0.12% | 1 | 0.46% |
| Or Gerlitz | 25 | 0.11% | 2 | 0.93% |
| Mark Bloch | 21 | 0.10% | 2 | 0.93% |
| Michael S. Tsirkin | 16 | 0.07% | 3 | 1.39% |
| Bart Van Assche | 12 | 0.06% | 1 | 0.46% |
| Bernd Schubert | 10 | 0.05% | 1 | 0.46% |
| Mustafa Ismail | 10 | 0.05% | 1 | 0.46% |
| Kamal Heib | 9 | 0.04% | 1 | 0.46% |
| Ganapathi CH | 7 | 0.03% | 1 | 0.46% |
| Moshe Lazer | 6 | 0.03% | 1 | 0.46% |
| Latchesar Ionkov | 4 | 0.02% | 1 | 0.46% |
| Matthew Wilcox | 4 | 0.02% | 1 | 0.46% |
| Bharat Potnuri | 4 | 0.02% | 1 | 0.46% |
| Ingo Molnar | 3 | 0.01% | 1 | 0.46% |
| Tejun Heo | 3 | 0.01% | 1 | 0.46% |
| Shachar Raindel | 3 | 0.01% | 1 | 0.46% |
| Krishna Kumar | 2 | 0.01% | 1 | 0.46% |
| Vasyl Gomonovych | 1 | 0.00% | 1 | 0.46% |
| Linus Torvalds | 1 | 0.00% | 1 | 0.46% |
| Total | 21770 | 216 |
/* * 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" static struct ib_uverbs_completion_event_file * _ib_uverbs_lookup_comp_file(s32 fd, struct ib_uverbs_file *ufile) { struct ib_uobject *uobj = ufd_get_read(UVERBS_OBJECT_COMP_CHANNEL, fd, ufile); 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) ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_get_context cmd; struct ib_uverbs_get_context_resp resp; struct ib_udata udata; struct ib_ucontext *ucontext; struct file *filp; struct ib_rdmacg_object cg_obj; struct ib_device *ib_dev; int ret; if (out_len < sizeof resp) return -ENOSPC; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; mutex_lock(&file->ucontext_lock); ib_dev = srcu_dereference(file->device->ib_dev, &file->device->disassociate_srcu); if (!ib_dev) { ret = -EIO; goto err; } if (file->ucontext) { ret = -EINVAL; goto err; } ib_uverbs_init_udata(&udata, buf + sizeof(cmd), u64_to_user_ptr(cmd.response) + sizeof(resp), in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), out_len - sizeof(resp)); ret = ib_rdmacg_try_charge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE); if (ret) goto err; ucontext = ib_dev->alloc_ucontext(ib_dev, &udata); if (IS_ERR(ucontext)) { ret = PTR_ERR(ucontext); goto err_alloc; } ucontext->device = ib_dev; ucontext->cg_obj = cg_obj; /* ufile is required when some objects are released */ ucontext->ufile = file; ucontext->closing = false; ucontext->cleanup_retryable = false; #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING mutex_init(&ucontext->per_mm_list_lock); INIT_LIST_HEAD(&ucontext->per_mm_list); if (!(ib_dev->attrs.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING)) ucontext->invalidate_range = NULL; #endif resp.num_comp_vectors = file->device->num_comp_vectors; ret = get_unused_fd_flags(O_CLOEXEC); if (ret < 0) goto err_free; resp.async_fd = ret; filp = ib_uverbs_alloc_async_event_file(file, ib_dev); if (IS_ERR(filp)) { ret = PTR_ERR(filp); goto err_fd; } if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) { ret = -EFAULT; goto err_file; } fd_install(resp.async_fd, filp); /* * 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); return in_len; err_file: ib_uverbs_free_async_event_file(file); fput(filp); err_fd: put_unused_fd(resp.async_fd); err_free: ib_dev->dealloc_ucontext(ucontext); err_alloc: ib_rdmacg_uncharge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE); err: mutex_unlock(&file->ucontext_lock); 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_fmr = attr->max_fmr; resp->max_map_per_fmr = attr->max_map_per_fmr; 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; } ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_query_device cmd; struct ib_uverbs_query_device_resp resp; struct ib_ucontext *ucontext; ucontext = ib_uverbs_get_ucontext(file); if (IS_ERR(ucontext)) return PTR_ERR(ucontext); if (out_len < sizeof resp) return -ENOSPC; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; memset(&resp, 0, sizeof resp); copy_query_dev_fields(ucontext, &resp, &ucontext->device->attrs); if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) return -EFAULT; return in_len; } /* * ib_uverbs_query_port_resp.port_cap_flags started out as just a copy of the * PortInfo CapabilityMask, but was extended with unique bits. */ static u32 make_port_cap_flags(const struct ib_port_attr *attr) { u32 res; /* All IBA CapabilityMask bits are passed through here, except bit 26, * which is overridden with IP_BASED_GIDS. This is due to a historical * mistake in the implementation of IP_BASED_GIDS. Otherwise all other * bits match the IBA definition across all kernel versions. */ res = attr->port_cap_flags & ~(u32)IB_UVERBS_PCF_IP_BASED_GIDS; if (attr->ip_gids) res |= IB_UVERBS_PCF_IP_BASED_GIDS; return res; } ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { 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(file); if (IS_ERR(ucontext)) return PTR_ERR(ucontext); ib_dev = ucontext->device; if (out_len < sizeof resp) return -ENOSPC; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; ret = ib_query_port(ib_dev, cmd.port_num, &attr); if (ret) return ret; memset(&resp, 0, sizeof resp); resp.state = attr.state; resp.max_mtu = attr.max_mtu; resp.active_mtu = attr.active_mtu; resp.gid_tbl_len = attr.gid_tbl_len; resp.port_cap_flags = make_port_cap_flags(&attr); resp.max_msg_sz = attr.max_msg_sz; resp.bad_pkey_cntr = attr.bad_pkey_cntr; resp.qkey_viol_cntr = attr.qkey_viol_cntr; resp.pkey_tbl_len = attr.pkey_tbl_len; if (rdma_is_grh_required(ib_dev, cmd.port_num)) resp.flags |= IB_UVERBS_QPF_GRH_REQUIRED; if (rdma_cap_opa_ah(ib_dev, cmd.port_num)) { resp.lid = OPA_TO_IB_UCAST_LID(attr.lid); resp.sm_lid = OPA_TO_IB_UCAST_LID(attr.sm_lid); } else { resp.lid = ib_lid_cpu16(attr.lid); resp.sm_lid = ib_lid_cpu16(attr.sm_lid); } resp.lmc = attr.lmc; resp.max_vl_num = attr.max_vl_num; resp.sm_sl = attr.sm_sl; resp.subnet_timeout = attr.subnet_timeout; resp.init_type_reply = attr.init_type_reply; resp.active_width = attr.active_width; resp.active_speed = attr.active_speed; resp.phys_state = attr.phys_state; resp.link_layer = rdma_port_get_link_layer(ib_dev, cmd.port_num); if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) return -EFAULT; return in_len; } ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_alloc_pd cmd; struct ib_uverbs_alloc_pd_resp resp; struct ib_udata udata; struct ib_uobject *uobj; struct ib_pd *pd; int ret; struct ib_device *ib_dev; if (out_len < sizeof resp) return -ENOSPC; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; ib_uverbs_init_udata(&udata, buf + sizeof(cmd), u64_to_user_ptr(cmd.response) + sizeof(resp), in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), out_len - sizeof(resp)); uobj = uobj_alloc(UVERBS_OBJECT_PD, file, &ib_dev); if (IS_ERR(uobj)) return PTR_ERR(uobj); pd = ib_dev->alloc_pd(ib_dev, uobj->context, &udata); if (IS_ERR(pd)) { ret = PTR_ERR(pd); goto err; } pd->device = ib_dev; pd->uobject = uobj; pd->__internal_mr = NULL; atomic_set(&pd->usecnt, 0); uobj->object = pd; memset(&resp, 0, sizeof resp); resp.pd_handle = uobj->id; pd->res.type = RDMA_RESTRACK_PD; rdma_restrack_add(&pd->res); if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) { ret = -EFAULT; goto err_copy; } return uobj_alloc_commit(uobj, in_len); err_copy: ib_dealloc_pd(pd); err: uobj_alloc_abort(uobj); return ret; } ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_dealloc_pd cmd; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; return uobj_perform_destroy(UVERBS_OBJECT_PD, cmd.pd_handle, file, in_len); } 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); } } ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_open_xrcd cmd; struct ib_uverbs_open_xrcd_resp resp; struct ib_udata udata; 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; if (out_len < sizeof resp) return -ENOSPC; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; ib_uverbs_init_udata(&udata, buf + sizeof(cmd), u64_to_user_ptr(cmd.response) + sizeof(resp), in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), out_len - sizeof(resp)); mutex_lock(&file->device->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(file->device, 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, file, &ib_dev); if (IS_ERR(obj)) { ret = PTR_ERR(obj); goto err_tree_mutex_unlock; } if (!xrcd) { xrcd = ib_dev->alloc_xrcd(ib_dev, obj->uobject.context, &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(file->device, inode, xrcd); if (ret) goto err_dealloc_xrcd; } atomic_inc(&xrcd->usecnt); } if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) { ret = -EFAULT; goto err_copy; } if (f.file) fdput(f); mutex_unlock(&file->device->xrcd_tree_mutex); return uobj_alloc_commit(&obj->uobject, in_len); err_copy: if (inode) { if (new_xrcd) xrcd_table_delete(file->device, inode); atomic_dec(&xrcd->usecnt); } err_dealloc_xrcd: ib_dealloc_xrcd(xrcd); err: uobj_alloc_abort(&obj->uobject); err_tree_mutex_unlock: if (f.file) fdput(f); mutex_unlock(&file->device->xrcd_tree_mutex); return ret; } ssize_t ib_uverbs_close_xrcd(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_close_xrcd cmd; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; return uobj_perform_destroy(UVERBS_OBJECT_XRCD, cmd.xrcd_handle, file, in_len); } int ib_uverbs_dealloc_xrcd(struct ib_uobject *uobject, struct ib_xrcd *xrcd, enum rdma_remove_reason why) { struct inode *inode; int ret; struct ib_uverbs_device *dev = uobject->context->ufile->device; inode = xrcd->inode; if (inode && !atomic_dec_and_test(&xrcd->usecnt)) return 0; ret = ib_dealloc_xrcd(xrcd); if (ib_is_destroy_retryable(ret, why, uobject)) { atomic_inc(&xrcd->usecnt); return ret; } if (inode) xrcd_table_delete(dev, inode); return ret; } ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_reg_mr cmd; struct ib_uverbs_reg_mr_resp resp; struct ib_udata udata; struct ib_uobject *uobj; struct ib_pd *pd; struct ib_mr *mr; int ret; struct ib_device *ib_dev; if (out_len < sizeof resp) return -ENOSPC; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; ib_uverbs_init_udata(&udata, buf + sizeof(cmd), u64_to_user_ptr(cmd.response) + sizeof(resp), in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), out_len - sizeof(resp)); 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, file, &ib_dev); if (IS_ERR(uobj)) return PTR_ERR(uobj); pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, file); 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->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, cmd.access_flags, &udata); if (IS_ERR(mr)) { ret = PTR_ERR(mr); goto err_put; } mr->device = pd->device; mr->pd = pd; mr->dm = NULL; mr->uobject = uobj; atomic_inc(&pd->usecnt); mr->res.type = RDMA_RESTRACK_MR; rdma_restrack_add(&mr->res); uobj->object = mr; memset(&resp, 0, sizeof resp); resp.lkey = mr->lkey; resp.rkey = mr->rkey; resp.mr_handle = uobj->id; if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) { ret = -EFAULT; goto err_copy; } uobj_put_obj_read(pd); return uobj_alloc_commit(uobj, in_len); err_copy: ib_dereg_mr(mr); err_put: uobj_put_obj_read(pd); err_free: uobj_alloc_abort(uobj); return ret; } ssize_t ib_uverbs_rereg_mr(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_rereg_mr cmd; struct ib_uverbs_rereg_mr_resp resp; struct ib_udata udata; struct ib_pd *pd = NULL; struct ib_mr *mr; struct ib_pd *old_pd; int ret; struct ib_uobject *uobj; if (out_len < sizeof(resp)) return -ENOSPC; if (copy_from_user(&cmd, buf, sizeof(cmd))) return -EFAULT; ib_uverbs_init_udata(&udata, buf + sizeof(cmd), u64_to_user_ptr(cmd.response) + sizeof(resp), in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), out_len - sizeof(resp)); 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, file); 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, file); if (!pd) { ret = -EINVAL; goto put_uobjs; } } old_pd = mr->pd; ret = mr->device->rereg_user_mr(mr, cmd.flags, cmd.start, cmd.length, cmd.hca_va, cmd.access_flags, pd, &udata); if (!ret) { if (cmd.flags & IB_MR_REREG_PD) { atomic_inc(&pd->usecnt); mr->pd = pd; atomic_dec(&old_pd->usecnt); } } else { goto put_uobj_pd; } memset(&resp, 0, sizeof(resp)); resp.lkey = mr->lkey; resp.rkey = mr->rkey; if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof(resp))) ret = -EFAULT; else ret = in_len; put_uobj_pd: if (cmd.flags & IB_MR_REREG_PD) uobj_put_obj_read(pd); put_uobjs: uobj_put_write(uobj); return ret; } ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_dereg_mr cmd; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; return uobj_perform_destroy(UVERBS_OBJECT_MR, cmd.mr_handle, file, in_len); } ssize_t ib_uverbs_alloc_mw(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { 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; struct ib_udata udata; int ret; struct ib_device *ib_dev; if (out_len < sizeof(resp)) return -ENOSPC; if (copy_from_user(&cmd, buf, sizeof(cmd))) return -EFAULT; uobj = uobj_alloc(UVERBS_OBJECT_MW, file, &ib_dev); if (IS_ERR(uobj)) return PTR_ERR(uobj); pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, file); if (!pd) { ret = -EINVAL; goto err_free; } ib_uverbs_init_udata(&udata, buf + sizeof(cmd), u64_to_user_ptr(cmd.response) + sizeof(resp), in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), out_len - sizeof(resp)); mw = pd->device->alloc_mw(pd, cmd.mw_type, &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; if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof(resp))) { ret = -EFAULT; goto err_copy; } uobj_put_obj_read(pd); return uobj_alloc_commit(uobj, in_len); err_copy: uverbs_dealloc_mw(mw); err_put: uobj_put_obj_read(pd); err_free: uobj_alloc_abort(uobj); return ret; } ssize_t ib_uverbs_dealloc_mw(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_dealloc_mw cmd; if (copy_from_user(&cmd, buf, sizeof(cmd))) return -EFAULT; return uobj_perform_destroy(UVERBS_OBJECT_MW, cmd.mw_handle, file, in_len); } ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { 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; if (out_len < sizeof resp) return -ENOSPC; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; uobj = uobj_alloc(UVERBS_OBJECT_COMP_CHANNEL, file, &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); if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) { uobj_alloc_abort(uobj); return -EFAULT; } return uobj_alloc_commit(uobj, in_len); } static struct ib_ucq_object *create_cq(struct ib_uverbs_file *file, struct ib_udata *ucore, struct ib_udata *uhw, struct ib_uverbs_ex_create_cq *cmd, size_t cmd_sz, int (*cb)(struct ib_uverbs_file *file, struct ib_ucq_object *obj, struct ib_uverbs_ex_create_cq_resp *resp, struct ib_udata *udata, void *context), void *context) { 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 >= file->device->num_comp_vectors) return ERR_PTR(-EINVAL); obj = (struct ib_ucq_object *)uobj_alloc(UVERBS_OBJECT_CQ, file, &ib_dev); if (IS_ERR(obj)) return obj; if (!ib_dev->create_cq) { ret = -EOPNOTSUPP; goto err; } if (cmd->comp_channel >= 0) { ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel, file); if (IS_ERR(ev_file)) { ret = PTR_ERR(ev_file); goto err; } } obj->uobject.user_handle = cmd->user_handle; obj->comp_events_reported = 0; obj->async_events_reported = 0; INIT_LIST_HEAD(&obj->comp_list); INIT_LIST_HEAD(&obj->async_list); attr.cqe = cmd->cqe; attr.comp_vector = cmd->comp_vector; if (cmd_sz > offsetof(typeof(*cmd), flags) + sizeof(cmd->flags)) attr.flags = cmd->flags; cq = ib_dev->create_cq(ib_dev, &attr, obj->uobject.context, uhw); if (IS_ERR(cq)) { ret = PTR_ERR(cq); goto err_file; } cq->device = ib_dev; cq->uobject = &obj->uobject; 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); obj->uobject.object = cq; memset(&resp, 0, sizeof resp); resp.base.cq_handle = obj->uobject.id; resp.base.cqe = cq->cqe; resp.response_length = offsetof(typeof(resp), response_length) + sizeof(resp.response_length); cq->res.type = RDMA_RESTRACK_CQ; rdma_restrack_add(&cq->res); ret = cb(file, obj, &resp, ucore, context); if (ret) goto err_cb; ret = uobj_alloc_commit(&obj->uobject, 0); if (ret) return ERR_PTR(ret); return obj; err_cb: ib_destroy_cq(cq); err_file: if (ev_file) ib_uverbs_release_ucq(file, ev_file, obj); err: uobj_alloc_abort(&obj->uobject); return ERR_PTR(ret); } static int ib_uverbs_create_cq_cb(struct ib_uverbs_file *file, struct ib_ucq_object *obj, struct ib_uverbs_ex_create_cq_resp *resp, struct ib_udata *ucore, void *context) { if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base))) return -EFAULT; return 0; } ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_create_cq cmd; struct ib_uverbs_ex_create_cq cmd_ex; struct ib_uverbs_create_cq_resp resp; struct ib_udata ucore; struct ib_udata uhw; struct ib_ucq_object *obj; if (out_len < sizeof(resp)) return -ENOSPC; if (copy_from_user(&cmd, buf, sizeof(cmd))) return -EFAULT; ib_uverbs_init_udata(&ucore, buf, u64_to_user_ptr(cmd.response), sizeof(cmd), sizeof(resp)); ib_uverbs_init_udata(&uhw, buf + sizeof(cmd), u64_to_user_ptr(cmd.response) + sizeof(resp), in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), out_len - sizeof(resp)); 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(file, &ucore, &uhw, &cmd_ex, offsetof(typeof(cmd_ex), comp_channel) + sizeof(cmd.comp_channel), ib_uverbs_create_cq_cb, NULL); if (IS_ERR(obj)) return PTR_ERR(obj); return in_len; } static int ib_uverbs_ex_create_cq_cb(struct ib_uverbs_file *file, struct ib_ucq_object *obj, struct ib_uverbs_ex_create_cq_resp *resp, struct ib_udata *ucore, void *context) { if (ib_copy_to_udata(ucore, resp, resp->response_length)) return -EFAULT; return 0; } int ib_uverbs_ex_create_cq(struct ib_uverbs_file *file, struct ib_udata *ucore, struct ib_udata *uhw) { struct ib_uverbs_ex_create_cq_resp resp; struct ib_uverbs_ex_create_cq cmd; struct ib_ucq_object *obj; int err; if (ucore->inlen < sizeof(cmd)) return -EINVAL; err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); if (err) return err; if (cmd.comp_mask) return -EINVAL; if (cmd.reserved) return -EINVAL; if (ucore->outlen < (offsetof(typeof(resp), response_length) + sizeof(resp.response_length))) return -ENOSPC; obj = create_cq(file, ucore, uhw, &cmd, min(ucore->inlen, sizeof(cmd)), ib_uverbs_ex_create_cq_cb, NULL); return PTR_ERR_OR_ZERO(obj); } ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_resize_cq cmd; struct ib_uverbs_resize_cq_resp resp = {}; struct ib_udata udata; struct ib_cq *cq; int ret = -EINVAL; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; ib_uverbs_init_udata(&udata, buf + sizeof(cmd), u64_to_user_ptr(cmd.response) + sizeof(resp), in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), out_len - sizeof(resp)); cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, file); if (!cq) return -EINVAL; ret = cq->device->resize_cq(cq, cmd.cqe, &udata); if (ret) goto out; resp.cqe = cq->cqe; if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp.cqe)) ret = -EFAULT; out: uobj_put_obj_read(cq); return ret ? ret : in_len; } 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; } ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { 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; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, file); if (!cq) return -EINVAL; /* we copy a struct ib_uverbs_poll_cq_resp to user space */ header_ptr = u64_to_user_ptr(cmd.response); 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 = in_len; out_put: uobj_put_obj_read(cq); return ret; } ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_req_notify_cq cmd; struct ib_cq *cq; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, file); if (!cq) return -EINVAL; ib_req_notify_cq(cq, cmd.solicited_only ? IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); uobj_put_obj_read(cq); return in_len; } ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_destroy_cq cmd; struct ib_uverbs_destroy_cq_resp resp; struct ib_uobject *uobj; struct ib_ucq_object *obj; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; uobj = uobj_get_destroy(UVERBS_OBJECT_CQ, cmd.cq_handle, file); if (IS_ERR(uobj)) return PTR_ERR(uobj); obj = container_of(uobj, struct ib_ucq_object, uobject); memset(&resp, 0, sizeof(resp)); resp.comp_events_reported = obj->comp_events_reported; resp.async_events_reported = obj->async_events_reported; uobj_put_destroy(uobj); if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) return -EFAULT; return in_len; } static int create_qp(struct ib_uverbs_file *file, struct ib_udata *ucore, struct ib_udata *uhw, struct ib_uverbs_ex_create_qp *cmd, size_t cmd_sz, int (*cb)(struct ib_uverbs_file *file, struct ib_uverbs_ex_create_qp_resp *resp, struct ib_udata *udata), void *context) { 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; char *buf; 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, file, &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_sz >= offsetof(typeof(*cmd), rwq_ind_tbl_handle) + sizeof(cmd->rwq_ind_tbl_handle) && (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, file); if (!ind_tbl) { ret = -EINVAL; goto err_put; } attr.rwq_ind_tbl = ind_tbl; } if (cmd_sz > sizeof(*cmd) && !ib_is_udata_cleared(ucore, sizeof(*cmd), cmd_sz - sizeof(*cmd))) { ret = -EOPNOTSUPP; goto err_put; } 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, file); 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, file); 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, file); if (!rcq) { ret = -EINVAL; goto err_put; } } } } if (has_sq) scq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd->send_cq_handle, file); if (!ind_tbl) rcq = rcq ?: scq; pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, file); if (!pd || (!scq && has_sq)) { ret = -EINVAL; goto err_put; } device = pd->device; } attr.event_handler = ib_uverbs_qp_event_handler; attr.qp_context = file; 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; obj->uevent.events_reported = 0; INIT_LIST_HEAD(&obj->uevent.event_list); INIT_LIST_HEAD(&obj->mcast_list); if (cmd_sz >= offsetof(typeof(*cmd), create_flags) + sizeof(cmd->create_flags)) 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; } buf = (void *)cmd + sizeof(*cmd); if (cmd_sz > sizeof(*cmd)) if (!(buf[0] == 0 && !memcmp(buf, buf + 1, cmd_sz - sizeof(*cmd) - 1))) { ret = -EINVAL; goto err_put; } if (cmd->qp_type == IB_QPT_XRC_TGT) qp = ib_create_qp(pd, &attr); else qp = _ib_create_qp(device, pd, &attr, uhw, &obj->uevent.uobject); 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; qp->real_qp = qp; qp->pd = pd; qp->send_cq = attr.send_cq; qp->recv_cq = attr.recv_cq; qp->srq = attr.srq; qp->rwq_ind_tbl = ind_tbl; qp->event_handler = attr.event_handler; qp->qp_context = attr.qp_context; qp->qp_type = attr.qp_type; atomic_set(&qp->usecnt, 0); atomic_inc(&pd->usecnt); qp->port = 0; 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->uevent.uobject; } obj->uevent.uobject.object = qp; 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 = offsetof(typeof(resp), response_length) + sizeof(resp.response_length); ret = cb(file, &resp, ucore); if (ret) goto err_cb; 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) uobj_put_obj_read(scq); if (rcq && rcq != scq) uobj_put_obj_read(rcq); if (srq) uobj_put_obj_read(srq); if (ind_tbl) uobj_put_obj_read(ind_tbl); return uobj_alloc_commit(&obj->uevent.uobject, 0); err_cb: ib_destroy_qp(qp); err_put: if (!IS_ERR(xrcd_uobj)) uobj_put_read(xrcd_uobj); if (pd) uobj_put_obj_read(pd); if (scq) uobj_put_obj_read(scq); if (rcq && rcq != scq) uobj_put_obj_read(rcq); if (srq) uobj_put_obj_read(srq); if (ind_tbl) uobj_put_obj_read(ind_tbl); uobj_alloc_abort(&obj->uevent.uobject); return ret; } static int ib_uverbs_create_qp_cb(struct ib_uverbs_file *file, struct ib_uverbs_ex_create_qp_resp *resp, struct ib_udata *ucore) { if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base))) return -EFAULT; return 0; } ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_create_qp cmd; struct ib_uverbs_ex_create_qp cmd_ex; struct ib_udata ucore; struct ib_udata uhw; ssize_t resp_size = sizeof(struct ib_uverbs_create_qp_resp); int err; if (out_len < resp_size) return -ENOSPC; if (copy_from_user(&cmd, buf, sizeof(cmd))) return -EFAULT; ib_uverbs_init_udata(&ucore, buf, u64_to_user_ptr(cmd.response), sizeof(cmd), resp_size); ib_uverbs_init_udata(&uhw, buf + sizeof(cmd), u64_to_user_ptr(cmd.response) + resp_size, in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), out_len - resp_size); 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; err = create_qp(file, &ucore, &uhw, &cmd_ex, offsetof(typeof(cmd_ex), is_srq) + sizeof(cmd.is_srq), ib_uverbs_create_qp_cb, NULL); if (err) return err; return in_len; } static int ib_uverbs_ex_create_qp_cb(struct ib_uverbs_file *file, struct ib_uverbs_ex_create_qp_resp *resp, struct ib_udata *ucore) { if (ib_copy_to_udata(ucore, resp, resp->response_length)) return -EFAULT; return 0; } int ib_uverbs_ex_create_qp(struct ib_uverbs_file *file, struct ib_udata *ucore, struct ib_udata *uhw) { struct ib_uverbs_ex_create_qp_resp resp; struct ib_uverbs_ex_create_qp cmd = {0}; int err; if (ucore->inlen < (offsetof(typeof(cmd), comp_mask) + sizeof(cmd.comp_mask))) return -EINVAL; err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); if (err) return err; if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK) return -EINVAL; if (cmd.reserved) return -EINVAL; if (ucore->outlen < (offsetof(typeof(resp), response_length) + sizeof(resp.response_length))) return -ENOSPC; err = create_qp(file, ucore, uhw, &cmd, min(ucore->inlen, sizeof(cmd)), ib_uverbs_ex_create_qp_cb, NULL); if (err) return err; return 0; } ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_open_qp cmd; struct ib_uverbs_create_qp_resp resp; struct ib_udata udata; 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; if (out_len < sizeof resp) return -ENOSPC; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; ib_uverbs_init_udata(&udata, buf + sizeof(cmd), u64_to_user_ptr(cmd.response) + sizeof(resp), in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), out_len - sizeof(resp)); obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, file, &ib_dev); if (IS_ERR(obj)) return PTR_ERR(obj); xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd.pd_handle, file); 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_context = file; attr.qp_num = cmd.qpn; attr.qp_type = cmd.qp_type; obj->uevent.events_reported = 0; 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; if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) { ret = -EFAULT; goto err_destroy; } obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); atomic_inc(&obj->uxrcd->refcnt); qp->uobject = &obj->uevent.uobject; uobj_put_read(xrcd_uobj); return uobj_alloc_commit(&obj->uevent.uobject, in_len); err_destroy: ib_destroy_qp(qp); err_xrcd: uobj_put_read(xrcd_uobj); err_put: uobj_alloc_abort(&obj->uevent.uobject); 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); } ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { 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; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; 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, file); if (!qp) { ret = -EINVAL; goto out; } ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); uobj_put_obj_read(qp); 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; if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) ret = -EFAULT; out: kfree(attr); kfree(init_attr); return ret ? ret : in_len; } /* 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 ib_uverbs_file *file, struct ib_uverbs_ex_modify_qp *cmd, struct ib_udata *udata) { 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, file); 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), udata); release_qp: uobj_put_obj_read(qp); out: kfree(attr); return ret; } ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_ex_modify_qp cmd = {}; struct ib_udata udata; int ret; if (copy_from_user(&cmd.base, buf, sizeof(cmd.base))) return -EFAULT; if (cmd.base.attr_mask & ~((IB_USER_LEGACY_LAST_QP_ATTR_MASK << 1) - 1)) return -EOPNOTSUPP; ib_uverbs_init_udata(&udata, buf + sizeof(cmd.base), NULL, in_len - sizeof(cmd.base) - sizeof(struct ib_uverbs_cmd_hdr), out_len); ret = modify_qp(file, &cmd, &udata); if (ret) return ret; return in_len; } int ib_uverbs_ex_modify_qp(struct ib_uverbs_file *file, struct ib_udata *ucore, struct ib_udata *uhw) { struct ib_uverbs_ex_modify_qp cmd = {}; int 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 (ucore->inlen < sizeof(cmd.base)) return -EINVAL; ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); if (ret) return ret; if (cmd.base.attr_mask & ~((IB_USER_LAST_QP_ATTR_MASK << 1) - 1)) return -EOPNOTSUPP; if (ucore->inlen > sizeof(cmd)) { if (!ib_is_udata_cleared(ucore, sizeof(cmd), ucore->inlen - sizeof(cmd))) return -EOPNOTSUPP; } ret = modify_qp(file, &cmd, uhw); return ret; } ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_destroy_qp cmd; struct ib_uverbs_destroy_qp_resp resp; struct ib_uobject *uobj; struct ib_uqp_object *obj; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; uobj = uobj_get_destroy(UVERBS_OBJECT_QP, cmd.qp_handle, file); 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); if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) return -EFAULT; return in_len; } 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); } ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { 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; ssize_t ret = -EINVAL; size_t next_size; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + cmd.sge_count * sizeof (struct ib_uverbs_sge)) return -EINVAL; if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) return -EINVAL; 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, file); if (!qp) 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, buf + sizeof cmd + 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, file); 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, buf + sizeof cmd + cmd.wr_count * cmd.wqe_size + sg_ind * sizeof (struct ib_sge), 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->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; } if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) ret = -EFAULT; out_put: uobj_put_obj_read(qp); 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 ? ret : in_len; } static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, int in_len, u32 wr_count, u32 sge_count, u32 wqe_size) { struct ib_uverbs_recv_wr *user_wr; struct ib_recv_wr *wr = NULL, *last, *next; int sg_ind; int i; int ret; if (in_len < wqe_size * wr_count + sge_count * sizeof (struct ib_uverbs_sge)) return ERR_PTR(-EINVAL); if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) return ERR_PTR(-EINVAL); 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, buf + 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, buf + wr_count * wqe_size + sg_ind * sizeof (struct ib_sge), 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); } ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { 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; ssize_t ret = -EINVAL; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, in_len - sizeof cmd, cmd.wr_count, cmd.sge_count, cmd.wqe_size); if (IS_ERR(wr)) return PTR_ERR(wr); qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, file); if (!qp) goto out; resp.bad_wr = 0; ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr); uobj_put_obj_read(qp); if (ret) { for (next = wr; next; next = next->next) { ++resp.bad_wr; if (next == bad_wr) break; } } if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) ret = -EFAULT; out: while (wr) { next = wr->next; kfree(wr); wr = next; } return ret ? ret : in_len; } ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { 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; ssize_t ret = -EINVAL; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, in_len - sizeof cmd, cmd.wr_count, cmd.sge_count, cmd.wqe_size); if (IS_ERR(wr)) return PTR_ERR(wr); srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, file); if (!srq) goto out; resp.bad_wr = 0; ret = srq->device->post_srq_recv ? srq->device->post_srq_recv(srq, wr, &bad_wr) : -EOPNOTSUPP; uobj_put_obj_read(srq); if (ret) for (next = wr; next; next = next->next) { ++resp.bad_wr; if (next == bad_wr) break; } if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) ret = -EFAULT; out: while (wr) { next = wr->next; kfree(wr); wr = next; } return ret ? ret : in_len; } ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { 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_udata udata; struct ib_device *ib_dev; if (out_len < sizeof resp) return -ENOSPC; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; ib_uverbs_init_udata(&udata, buf + sizeof(cmd), u64_to_user_ptr(cmd.response) + sizeof(resp), in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), out_len - sizeof(resp)); uobj = uobj_alloc(UVERBS_OBJECT_AH, file, &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, file); 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, &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; if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) { ret = -EFAULT; goto err_copy; } uobj_put_obj_read(pd); return uobj_alloc_commit(uobj, in_len); err_copy: rdma_destroy_ah(ah); err_put: uobj_put_obj_read(pd); err: uobj_alloc_abort(uobj); return ret; } ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_destroy_ah cmd; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; return uobj_perform_destroy(UVERBS_OBJECT_AH, cmd.ah_handle, file, in_len); } ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_attach_mcast cmd; struct ib_qp *qp; struct ib_uqp_object *obj; struct ib_uverbs_mcast_entry *mcast; int ret; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, file); if (!qp) return -EINVAL; obj = container_of(qp->uobject, struct ib_uqp_object, uevent.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); uobj_put_obj_read(qp); return ret ? ret : in_len; } ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_detach_mcast cmd; struct ib_uqp_object *obj; struct ib_qp *qp; struct ib_uverbs_mcast_entry *mcast; int ret = -EINVAL; bool found = false; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, file); if (!qp) return -EINVAL; obj = container_of(qp->uobject, struct ib_uqp_object, uevent.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); uobj_put_obj_read(qp); return ret ? ret : in_len; } 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 ib_uverbs_file *ufile, 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, ufile); 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, ufile); 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 size_t kern_spec_filter_sz(const struct ib_uverbs_flow_spec_hdr *spec) { /* Returns user space filter size, includes padding */ return (spec->size - sizeof(struct ib_uverbs_flow_spec_hdr)) / 2; } 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) { ssize_t kern_filter_sz; void *kern_spec_mask; void *kern_spec_val; kern_filter_sz = kern_spec_filter_sz(&kern_spec->hdr); 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 ib_uverbs_file *ufile, 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(ufile, kern_spec, ib_spec, uflow_res); else return kern_spec_to_ib_spec_filter(kern_spec, ib_spec); } int ib_uverbs_ex_create_wq(struct ib_uverbs_file *file, struct ib_udata *ucore, struct ib_udata *uhw) { 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 = {}; size_t required_cmd_sz; size_t required_resp_len; struct ib_device *ib_dev; required_cmd_sz = offsetof(typeof(cmd), max_sge) + sizeof(cmd.max_sge); required_resp_len = offsetof(typeof(resp), wqn) + sizeof(resp.wqn); if (ucore->inlen < required_cmd_sz) return -EINVAL; if (ucore->outlen < required_resp_len) return -ENOSPC; if (ucore->inlen > sizeof(cmd) && !ib_is_udata_cleared(ucore, sizeof(cmd), ucore->inlen - sizeof(cmd))) return -EOPNOTSUPP; err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); if (err) return err; if (cmd.comp_mask) return -EOPNOTSUPP; obj = (struct ib_uwq_object *)uobj_alloc(UVERBS_OBJECT_WQ, file, &ib_dev); if (IS_ERR(obj)) return PTR_ERR(obj); pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, file); if (!pd) { err = -EINVAL; goto err_uobj; } cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, file); 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_context = file; wq_init_attr.wq_type = cmd.wq_type; wq_init_attr.event_handler = ib_uverbs_wq_event_handler; if (ucore->inlen >= (offsetof(typeof(cmd), create_flags) + sizeof(cmd.create_flags))) wq_init_attr.create_flags = cmd.create_flags; obj->uevent.events_reported = 0; INIT_LIST_HEAD(&obj->uevent.event_list); if (!pd->device->create_wq) { err = -EOPNOTSUPP; goto err_put_cq; } wq = pd->device->create_wq(pd, &wq_init_attr, uhw); if (IS_ERR(wq)) { err = PTR_ERR(wq); goto err_put_cq; } wq->uobject = &obj->uevent.uobject; obj->uevent.uobject.object = wq; wq->wq_type = wq_init_attr.wq_type; wq->cq = cq; wq->pd = pd; wq->device = pd->device; wq->wq_context = wq_init_attr.wq_context; atomic_set(&wq->usecnt, 0); atomic_inc(&pd->usecnt); atomic_inc(&cq->usecnt); wq->uobject = &obj->uevent.uobject; obj->uevent.uobject.object = wq; 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 = required_resp_len; err = ib_copy_to_udata(ucore, &resp, resp.response_length); if (err) goto err_copy; uobj_put_obj_read(pd); uobj_put_obj_read(cq); return uobj_alloc_commit(&obj->uevent.uobject, 0); err_copy: ib_destroy_wq(wq); err_put_cq: uobj_put_obj_read(cq); err_put_pd: uobj_put_obj_read(pd); err_uobj: uobj_alloc_abort(&obj->uevent.uobject); return err; } int ib_uverbs_ex_destroy_wq(struct ib_uverbs_file *file, struct ib_udata *ucore, struct ib_udata *uhw) { struct ib_uverbs_ex_destroy_wq cmd = {}; struct ib_uverbs_ex_destroy_wq_resp resp = {}; struct ib_uobject *uobj; struct ib_uwq_object *obj; size_t required_cmd_sz; size_t required_resp_len; int ret; required_cmd_sz = offsetof(typeof(cmd), wq_handle) + sizeof(cmd.wq_handle); required_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved); if (ucore->inlen < required_cmd_sz) return -EINVAL; if (ucore->outlen < required_resp_len) return -ENOSPC; if (ucore->inlen > sizeof(cmd) && !ib_is_udata_cleared(ucore, sizeof(cmd), ucore->inlen - sizeof(cmd))) return -EOPNOTSUPP; ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); if (ret) return ret; if (cmd.comp_mask) return -EOPNOTSUPP; resp.response_length = required_resp_len; uobj = uobj_get_destroy(UVERBS_OBJECT_WQ, cmd.wq_handle, file); 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 ib_copy_to_udata(ucore, &resp, resp.response_length); } int ib_uverbs_ex_modify_wq(struct ib_uverbs_file *file, struct ib_udata *ucore, struct ib_udata *uhw) { struct ib_uverbs_ex_modify_wq cmd = {}; struct ib_wq *wq; struct ib_wq_attr wq_attr = {}; size_t required_cmd_sz; int ret; required_cmd_sz = offsetof(typeof(cmd), curr_wq_state) + sizeof(cmd.curr_wq_state); if (ucore->inlen < required_cmd_sz) return -EINVAL; if (ucore->inlen > sizeof(cmd) && !ib_is_udata_cleared(ucore, sizeof(cmd), ucore->inlen - sizeof(cmd))) return -EOPNOTSUPP; ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); 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, file); 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; } if (!wq->device->modify_wq) { ret = -EOPNOTSUPP; goto out; } ret = wq->device->modify_wq(wq, &wq_attr, cmd.attr_mask, uhw); out: uobj_put_obj_read(wq); return ret; } int ib_uverbs_ex_create_rwq_ind_table(struct ib_uverbs_file *file, struct ib_udata *ucore, struct ib_udata *uhw) { 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 = 0; 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; u32 expected_in_size; size_t required_cmd_sz_header; size_t required_resp_len; struct ib_device *ib_dev; required_cmd_sz_header = offsetof(typeof(cmd), log_ind_tbl_size) + sizeof(cmd.log_ind_tbl_size); required_resp_len = offsetof(typeof(resp), ind_tbl_num) + sizeof(resp.ind_tbl_num); if (ucore->inlen < required_cmd_sz_header) return -EINVAL; if (ucore->outlen < required_resp_len) return -ENOSPC; err = ib_copy_from_udata(&cmd, ucore, required_cmd_sz_header); if (err) return err; ucore->inbuf += required_cmd_sz_header; ucore->inlen -= required_cmd_sz_header; 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; expected_in_size = num_wq_handles * sizeof(__u32); if (num_wq_handles == 1) /* input size for wq handles is u64 aligned */ expected_in_size += sizeof(__u32); if (ucore->inlen < expected_in_size) return -EINVAL; if (ucore->inlen > expected_in_size && !ib_is_udata_cleared(ucore, expected_in_size, ucore->inlen - expected_in_size)) return -EOPNOTSUPP; wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles), GFP_KERNEL); if (!wqs_handles) return -ENOMEM; err = ib_copy_from_udata(wqs_handles, ucore, num_wq_handles * sizeof(__u32)); 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], file); if (!wq) { err = -EINVAL; goto put_wqs; } wqs[num_read_wqs] = wq; } uobj = uobj_alloc(UVERBS_OBJECT_RWQ_IND_TBL, file, &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; if (!ib_dev->create_rwq_ind_table) { err = -EOPNOTSUPP; goto err_uobj; } rwq_ind_tbl = ib_dev->create_rwq_ind_table(ib_dev, &init_attr, uhw); 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 = required_resp_len; err = ib_copy_to_udata(ucore, &resp, resp.response_length); if (err) goto err_copy; kfree(wqs_handles); for (j = 0; j < num_read_wqs; j++) uobj_put_obj_read(wqs[j]); return uobj_alloc_commit(uobj, 0); err_copy: ib_destroy_rwq_ind_table(rwq_ind_tbl); err_uobj: uobj_alloc_abort(uobj); put_wqs: for (j = 0; j < num_read_wqs; j++) uobj_put_obj_read(wqs[j]); err_free: kfree(wqs_handles); kfree(wqs); return err; } int ib_uverbs_ex_destroy_rwq_ind_table(struct ib_uverbs_file *file, struct ib_udata *ucore, struct ib_udata *uhw) { struct ib_uverbs_ex_destroy_rwq_ind_table cmd = {}; int ret; size_t required_cmd_sz; required_cmd_sz = offsetof(typeof(cmd), ind_tbl_handle) + sizeof(cmd.ind_tbl_handle); if (ucore->inlen < required_cmd_sz) return -EINVAL; if (ucore->inlen > sizeof(cmd) && !ib_is_udata_cleared(ucore, sizeof(cmd), ucore->inlen - sizeof(cmd))) return -EOPNOTSUPP; ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); if (ret) return ret; if (cmd.comp_mask) return -EOPNOTSUPP; return uobj_perform_destroy(UVERBS_OBJECT_RWQ_IND_TBL, cmd.ind_tbl_handle, file, 0); } int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file, struct ib_udata *ucore, struct ib_udata *uhw) { 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; int err = 0; void *ib_spec; int i; struct ib_device *ib_dev; if (ucore->inlen < sizeof(cmd)) return -EINVAL; if (ucore->outlen < sizeof(resp)) return -ENOSPC; err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); if (err) return err; ucore->inbuf += sizeof(cmd); ucore->inlen -= sizeof(cmd); 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 > ucore->inlen || 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 = ib_copy_from_udata(&kern_flow_attr->flow_specs, ucore, cmd.flow_attr.size); if (err) goto err_free_attr; } else { kern_flow_attr = &cmd.flow_attr; } uobj = uobj_alloc(UVERBS_OBJECT_FLOW, file, &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, file); 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; } if (!qp->device->create_flow) { err = -EOPNOTSUPP; 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( file, (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->create_flow(qp, flow_attr, IB_FLOW_DOMAIN_USER, uhw); 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 = ib_copy_to_udata(ucore, &resp, sizeof(resp)); if (err) goto err_copy; uobj_put_obj_read(qp); kfree(flow_attr); if (cmd.flow_attr.num_of_specs) kfree(kern_flow_attr); return uobj_alloc_commit(uobj, 0); err_copy: if (!qp->device->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: uobj_put_obj_read(qp); err_uobj: uobj_alloc_abort(uobj); err_free_attr: if (cmd.flow_attr.num_of_specs) kfree(kern_flow_attr); return err; } int ib_uverbs_ex_destroy_flow(struct ib_uverbs_file *file, struct ib_udata *ucore, struct ib_udata *uhw) { struct ib_uverbs_destroy_flow cmd; int ret; if (ucore->inlen < sizeof(cmd)) return -EINVAL; ret = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); if (ret) return ret; if (cmd.comp_mask) return -EINVAL; return uobj_perform_destroy(UVERBS_OBJECT_FLOW, cmd.flow_handle, file, 0); } static int __uverbs_create_xsrq(struct ib_uverbs_file *file, 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, file, &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, file); 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, file); if (!attr.ext.cq) { ret = -EINVAL; goto err_put_xrcd; } } pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, file); if (!pd) { ret = -EINVAL; goto err_put_cq; } attr.event_handler = ib_uverbs_srq_event_handler; attr.srq_context = file; 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; obj->uevent.events_reported = 0; INIT_LIST_HEAD(&obj->uevent.event_list); srq = pd->device->create_srq(pd, &attr, udata); if (IS_ERR(srq)) { ret = PTR_ERR(srq); goto err_put; } srq->device = pd->device; srq->pd = pd; srq->srq_type = cmd->srq_type; srq->uobject = &obj->uevent.uobject; srq->event_handler = attr.event_handler; srq->srq_context = attr.srq_context; if (ib_srq_has_cq(cmd->srq_type)) { srq->ext.cq = attr.ext.cq; atomic_inc(&attr.ext.cq->usecnt); } if (cmd->srq_type == IB_SRQT_XRC) { srq->ext.xrc.xrcd = attr.ext.xrc.xrcd; atomic_inc(&attr.ext.xrc.xrcd->usecnt); } atomic_inc(&pd->usecnt); atomic_set(&srq->usecnt, 0); obj->uevent.uobject.object = srq; obj->uevent.uobject.user_handle = cmd->user_handle; 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; if (copy_to_user(u64_to_user_ptr(cmd->response), &resp, sizeof resp)) { ret = -EFAULT; goto err_copy; } if (cmd->srq_type == IB_SRQT_XRC) uobj_put_read(xrcd_uobj); if (ib_srq_has_cq(cmd->srq_type)) uobj_put_obj_read(attr.ext.cq); uobj_put_obj_read(pd); return uobj_alloc_commit(&obj->uevent.uobject, 0); err_copy: ib_destroy_srq(srq); err_put: uobj_put_obj_read(pd); err_put_cq: if (ib_srq_has_cq(cmd->srq_type)) uobj_put_obj_read(attr.ext.cq); 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); return ret; } ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_create_srq cmd; struct ib_uverbs_create_xsrq xcmd; struct ib_uverbs_create_srq_resp resp; struct ib_udata udata; int ret; if (out_len < sizeof resp) return -ENOSPC; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; 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; ib_uverbs_init_udata(&udata, buf + sizeof(cmd), u64_to_user_ptr(cmd.response) + sizeof(resp), in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), out_len - sizeof(resp)); ret = __uverbs_create_xsrq(file, &xcmd, &udata); if (ret) return ret; return in_len; } ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_create_xsrq cmd; struct ib_uverbs_create_srq_resp resp; struct ib_udata udata; int ret; if (out_len < sizeof resp) return -ENOSPC; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; ib_uverbs_init_udata(&udata, buf + sizeof(cmd), u64_to_user_ptr(cmd.response) + sizeof(resp), in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), out_len - sizeof(resp)); ret = __uverbs_create_xsrq(file, &cmd, &udata); if (ret) return ret; return in_len; } ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_modify_srq cmd; struct ib_udata udata; struct ib_srq *srq; struct ib_srq_attr attr; int ret; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; ib_uverbs_init_udata(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, out_len); srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, file); if (!srq) return -EINVAL; attr.max_wr = cmd.max_wr; attr.srq_limit = cmd.srq_limit; ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata); uobj_put_obj_read(srq); return ret ? ret : in_len; } ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_query_srq cmd; struct ib_uverbs_query_srq_resp resp; struct ib_srq_attr attr; struct ib_srq *srq; int ret; if (out_len < sizeof resp) return -ENOSPC; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, file); if (!srq) return -EINVAL; ret = ib_query_srq(srq, &attr); uobj_put_obj_read(srq); 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; if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) return -EFAULT; return in_len; } ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) { struct ib_uverbs_destroy_srq cmd; struct ib_uverbs_destroy_srq_resp resp; struct ib_uobject *uobj; struct ib_uevent_object *obj; if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; uobj = uobj_get_destroy(UVERBS_OBJECT_SRQ, cmd.srq_handle, file); 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); if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof(resp))) return -EFAULT; return in_len; } int ib_uverbs_ex_query_device(struct ib_uverbs_file *file, struct ib_udata *ucore, struct ib_udata *uhw) { struct ib_uverbs_ex_query_device_resp resp = { {0} }; 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(file); if (IS_ERR(ucontext)) return PTR_ERR(ucontext); ib_dev = ucontext->device; if (!ib_dev->query_device) return -EOPNOTSUPP; if (ucore->inlen < sizeof(cmd)) return -EINVAL; err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); if (err) return err; if (cmd.comp_mask) return -EINVAL; if (cmd.reserved) return -EINVAL; resp.response_length = offsetof(typeof(resp), odp_caps); if (ucore->outlen < resp.response_length) return -ENOSPC; err = ib_dev->query_device(ib_dev, &attr, uhw); if (err) return err; copy_query_dev_fields(ucontext, &resp.base, &attr); if (ucore->outlen < resp.response_length + sizeof(resp.odp_caps)) goto end; #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING 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; #endif resp.response_length += sizeof(resp.odp_caps); if (ucore->outlen < resp.response_length + sizeof(resp.timestamp_mask)) goto end; resp.timestamp_mask = attr.timestamp_mask; resp.response_length += sizeof(resp.timestamp_mask); if (ucore->outlen < resp.response_length + sizeof(resp.hca_core_clock)) goto end; resp.hca_core_clock = attr.hca_core_clock; resp.response_length += sizeof(resp.hca_core_clock); if (ucore->outlen < resp.response_length + sizeof(resp.device_cap_flags_ex)) goto end; resp.device_cap_flags_ex = attr.device_cap_flags; resp.response_length += sizeof(resp.device_cap_flags_ex); if (ucore->outlen < resp.response_length + sizeof(resp.rss_caps)) goto end; 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.response_length += sizeof(resp.rss_caps); if (ucore->outlen < resp.response_length + sizeof(resp.max_wq_type_rq)) goto end; resp.max_wq_type_rq = attr.max_wq_type_rq; resp.response_length += sizeof(resp.max_wq_type_rq); if (ucore->outlen < resp.response_length + sizeof(resp.raw_packet_caps)) goto end; resp.raw_packet_caps = attr.raw_packet_caps; resp.response_length += sizeof(resp.raw_packet_caps); if (ucore->outlen < resp.response_length + sizeof(resp.tm_caps)) goto end; 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.response_length += sizeof(resp.tm_caps); if (ucore->outlen < resp.response_length + sizeof(resp.cq_moderation_caps)) goto end; 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.response_length += sizeof(resp.cq_moderation_caps); if (ucore->outlen < resp.response_length + sizeof(resp.max_dm_size)) goto end; resp.max_dm_size = attr.max_dm_size; resp.response_length += sizeof(resp.max_dm_size); end: err = ib_copy_to_udata(ucore, &resp, resp.response_length); return err; } int ib_uverbs_ex_modify_cq(struct ib_uverbs_file *file, struct ib_udata *ucore, struct ib_udata *uhw) { struct ib_uverbs_ex_modify_cq cmd = {}; struct ib_cq *cq; size_t required_cmd_sz; int ret; required_cmd_sz = offsetof(typeof(cmd), reserved) + sizeof(cmd.reserved); if (ucore->inlen < required_cmd_sz) return -EINVAL; /* sanity checks */ if (ucore->inlen > sizeof(cmd) && !ib_is_udata_cleared(ucore, sizeof(cmd), ucore->inlen - sizeof(cmd))) return -EOPNOTSUPP; ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); 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, file); if (!cq) return -EINVAL; ret = rdma_set_cq_moderation(cq, cmd.attr.cq_count, cmd.attr.cq_period); uobj_put_obj_read(cq); return ret; }
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