| /* |
| * Copyright (c) 2005 Topspin Communications. All rights reserved. |
| * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved. |
| * Copyright (c) 2005 PathScale, Inc. All rights reserved. |
| * Copyright (c) 2006 Mellanox Technologies. All rights reserved. |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * OpenIB.org BSD license below: |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials |
| * provided with the distribution. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #include <linux/file.h> |
| #include <linux/fs.h> |
| #include <linux/slab.h> |
| #include <linux/sched.h> |
| |
| #include <linux/uaccess.h> |
| |
| #include <rdma/uverbs_types.h> |
| #include <rdma/uverbs_std_types.h> |
| #include "rdma_core.h" |
| |
| #include "uverbs.h" |
| #include "core_priv.h" |
| |
| /* |
| * Copy a response to userspace. If the provided 'resp' is larger than the |
| * user buffer it is silently truncated. If the user provided a larger buffer |
| * then the trailing portion is zero filled. |
| * |
| * These semantics are intended to support future extension of the output |
| * structures. |
| */ |
| static int uverbs_response(struct uverbs_attr_bundle *attrs, const void *resp, |
| size_t resp_len) |
| { |
| int ret; |
| |
| if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT)) |
| return uverbs_copy_to_struct_or_zero( |
| attrs, UVERBS_ATTR_CORE_OUT, resp, resp_len); |
| |
| if (copy_to_user(attrs->ucore.outbuf, resp, |
| min(attrs->ucore.outlen, resp_len))) |
| return -EFAULT; |
| |
| if (resp_len < attrs->ucore.outlen) { |
| /* |
| * Zero fill any extra memory that user |
| * space might have provided. |
| */ |
| ret = clear_user(attrs->ucore.outbuf + resp_len, |
| attrs->ucore.outlen - resp_len); |
| if (ret) |
| return -EFAULT; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Copy a request from userspace. If the provided 'req' is larger than the |
| * user buffer then the user buffer is zero extended into the 'req'. If 'req' |
| * is smaller than the user buffer then the uncopied bytes in the user buffer |
| * must be zero. |
| */ |
| static int uverbs_request(struct uverbs_attr_bundle *attrs, void *req, |
| size_t req_len) |
| { |
| if (copy_from_user(req, attrs->ucore.inbuf, |
| min(attrs->ucore.inlen, req_len))) |
| return -EFAULT; |
| |
| if (attrs->ucore.inlen < req_len) { |
| memset(req + attrs->ucore.inlen, 0, |
| req_len - attrs->ucore.inlen); |
| } else if (attrs->ucore.inlen > req_len) { |
| if (!ib_is_buffer_cleared(attrs->ucore.inbuf + req_len, |
| attrs->ucore.inlen - req_len)) |
| return -EOPNOTSUPP; |
| } |
| return 0; |
| } |
| |
| /* |
| * Generate the value for the 'response_length' protocol used by write_ex. |
| * This is the number of bytes the kernel actually wrote. Userspace can use |
| * this to detect what structure members in the response the kernel |
| * understood. |
| */ |
| static u32 uverbs_response_length(struct uverbs_attr_bundle *attrs, |
| size_t resp_len) |
| { |
| return min_t(size_t, attrs->ucore.outlen, resp_len); |
| } |
| |
| /* |
| * The iterator version of the request interface is for handlers that need to |
| * step over a flex array at the end of a command header. |
| */ |
| struct uverbs_req_iter { |
| const void __user *cur; |
| const void __user *end; |
| }; |
| |
| static int uverbs_request_start(struct uverbs_attr_bundle *attrs, |
| struct uverbs_req_iter *iter, |
| void *req, |
| size_t req_len) |
| { |
| if (attrs->ucore.inlen < req_len) |
| return -ENOSPC; |
| |
| if (copy_from_user(req, attrs->ucore.inbuf, req_len)) |
| return -EFAULT; |
| |
| iter->cur = attrs->ucore.inbuf + req_len; |
| iter->end = attrs->ucore.inbuf + attrs->ucore.inlen; |
| return 0; |
| } |
| |
| static int uverbs_request_next(struct uverbs_req_iter *iter, void *val, |
| size_t len) |
| { |
| if (iter->cur + len > iter->end) |
| return -ENOSPC; |
| |
| if (copy_from_user(val, iter->cur, len)) |
| return -EFAULT; |
| |
| iter->cur += len; |
| return 0; |
| } |
| |
| static const void __user *uverbs_request_next_ptr(struct uverbs_req_iter *iter, |
| size_t len) |
| { |
| const void __user *res = iter->cur; |
| |
| if (iter->cur + len > iter->end) |
| return (void __force __user *)ERR_PTR(-ENOSPC); |
| iter->cur += len; |
| return res; |
| } |
| |
| static int uverbs_request_finish(struct uverbs_req_iter *iter) |
| { |
| if (!ib_is_buffer_cleared(iter->cur, iter->end - iter->cur)) |
| return -EOPNOTSUPP; |
| return 0; |
| } |
| |
| /* |
| * When calling a destroy function during an error unwind we need to pass in |
| * the udata that is sanitized of all user arguments. Ie from the driver |
| * perspective it looks like no udata was passed. |
| */ |
| struct ib_udata *uverbs_get_cleared_udata(struct uverbs_attr_bundle *attrs) |
| { |
| attrs->driver_udata = (struct ib_udata){}; |
| return &attrs->driver_udata; |
| } |
| |
| static struct ib_uverbs_completion_event_file * |
| _ib_uverbs_lookup_comp_file(s32 fd, struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uobject *uobj = ufd_get_read(UVERBS_OBJECT_COMP_CHANNEL, |
| fd, attrs); |
| |
| if (IS_ERR(uobj)) |
| return (void *)uobj; |
| |
| uverbs_uobject_get(uobj); |
| uobj_put_read(uobj); |
| |
| return container_of(uobj, struct ib_uverbs_completion_event_file, |
| uobj); |
| } |
| #define ib_uverbs_lookup_comp_file(_fd, _ufile) \ |
| _ib_uverbs_lookup_comp_file((_fd)*typecheck(s32, _fd), _ufile) |
| |
| int ib_alloc_ucontext(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_file *ufile = attrs->ufile; |
| struct ib_ucontext *ucontext; |
| struct ib_device *ib_dev; |
| |
| ib_dev = srcu_dereference(ufile->device->ib_dev, |
| &ufile->device->disassociate_srcu); |
| if (!ib_dev) |
| return -EIO; |
| |
| ucontext = rdma_zalloc_drv_obj(ib_dev, ib_ucontext); |
| if (!ucontext) |
| return -ENOMEM; |
| |
| ucontext->device = ib_dev; |
| ucontext->ufile = ufile; |
| xa_init_flags(&ucontext->mmap_xa, XA_FLAGS_ALLOC); |
| |
| rdma_restrack_new(&ucontext->res, RDMA_RESTRACK_CTX); |
| rdma_restrack_set_name(&ucontext->res, NULL); |
| attrs->context = ucontext; |
| return 0; |
| } |
| |
| int ib_init_ucontext(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_ucontext *ucontext = attrs->context; |
| struct ib_uverbs_file *file = attrs->ufile; |
| int ret; |
| |
| if (!down_read_trylock(&file->hw_destroy_rwsem)) |
| return -EIO; |
| mutex_lock(&file->ucontext_lock); |
| if (file->ucontext) { |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| ret = ib_rdmacg_try_charge(&ucontext->cg_obj, ucontext->device, |
| RDMACG_RESOURCE_HCA_HANDLE); |
| if (ret) |
| goto err; |
| |
| ret = ucontext->device->ops.alloc_ucontext(ucontext, |
| &attrs->driver_udata); |
| if (ret) |
| goto err_uncharge; |
| |
| rdma_restrack_add(&ucontext->res); |
| |
| /* |
| * Make sure that ib_uverbs_get_ucontext() sees the pointer update |
| * only after all writes to setup the ucontext have completed |
| */ |
| smp_store_release(&file->ucontext, ucontext); |
| |
| mutex_unlock(&file->ucontext_lock); |
| up_read(&file->hw_destroy_rwsem); |
| return 0; |
| |
| err_uncharge: |
| ib_rdmacg_uncharge(&ucontext->cg_obj, ucontext->device, |
| RDMACG_RESOURCE_HCA_HANDLE); |
| err: |
| mutex_unlock(&file->ucontext_lock); |
| up_read(&file->hw_destroy_rwsem); |
| return ret; |
| } |
| |
| static int ib_uverbs_get_context(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_get_context_resp resp; |
| struct ib_uverbs_get_context cmd; |
| struct ib_device *ib_dev; |
| struct ib_uobject *uobj; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| ret = ib_alloc_ucontext(attrs); |
| if (ret) |
| return ret; |
| |
| uobj = uobj_alloc(UVERBS_OBJECT_ASYNC_EVENT, attrs, &ib_dev); |
| if (IS_ERR(uobj)) { |
| ret = PTR_ERR(uobj); |
| goto err_ucontext; |
| } |
| |
| resp = (struct ib_uverbs_get_context_resp){ |
| .num_comp_vectors = attrs->ufile->device->num_comp_vectors, |
| .async_fd = uobj->id, |
| }; |
| ret = uverbs_response(attrs, &resp, sizeof(resp)); |
| if (ret) |
| goto err_uobj; |
| |
| ret = ib_init_ucontext(attrs); |
| if (ret) |
| goto err_uobj; |
| |
| ib_uverbs_init_async_event_file( |
| container_of(uobj, struct ib_uverbs_async_event_file, uobj)); |
| rdma_alloc_commit_uobject(uobj, attrs); |
| return 0; |
| |
| err_uobj: |
| rdma_alloc_abort_uobject(uobj, attrs, false); |
| err_ucontext: |
| rdma_restrack_put(&attrs->context->res); |
| kfree(attrs->context); |
| attrs->context = NULL; |
| return ret; |
| } |
| |
| static void copy_query_dev_fields(struct ib_ucontext *ucontext, |
| struct ib_uverbs_query_device_resp *resp, |
| struct ib_device_attr *attr) |
| { |
| struct ib_device *ib_dev = ucontext->device; |
| |
| resp->fw_ver = attr->fw_ver; |
| resp->node_guid = ib_dev->node_guid; |
| resp->sys_image_guid = attr->sys_image_guid; |
| resp->max_mr_size = attr->max_mr_size; |
| resp->page_size_cap = attr->page_size_cap; |
| resp->vendor_id = attr->vendor_id; |
| resp->vendor_part_id = attr->vendor_part_id; |
| resp->hw_ver = attr->hw_ver; |
| resp->max_qp = attr->max_qp; |
| resp->max_qp_wr = attr->max_qp_wr; |
| resp->device_cap_flags = lower_32_bits(attr->device_cap_flags); |
| resp->max_sge = min(attr->max_send_sge, attr->max_recv_sge); |
| resp->max_sge_rd = attr->max_sge_rd; |
| resp->max_cq = attr->max_cq; |
| resp->max_cqe = attr->max_cqe; |
| resp->max_mr = attr->max_mr; |
| resp->max_pd = attr->max_pd; |
| resp->max_qp_rd_atom = attr->max_qp_rd_atom; |
| resp->max_ee_rd_atom = attr->max_ee_rd_atom; |
| resp->max_res_rd_atom = attr->max_res_rd_atom; |
| resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom; |
| resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom; |
| resp->atomic_cap = attr->atomic_cap; |
| resp->max_ee = attr->max_ee; |
| resp->max_rdd = attr->max_rdd; |
| resp->max_mw = attr->max_mw; |
| resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp; |
| resp->max_raw_ethy_qp = attr->max_raw_ethy_qp; |
| resp->max_mcast_grp = attr->max_mcast_grp; |
| resp->max_mcast_qp_attach = attr->max_mcast_qp_attach; |
| resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach; |
| resp->max_ah = attr->max_ah; |
| resp->max_srq = attr->max_srq; |
| resp->max_srq_wr = attr->max_srq_wr; |
| resp->max_srq_sge = attr->max_srq_sge; |
| resp->max_pkeys = attr->max_pkeys; |
| resp->local_ca_ack_delay = attr->local_ca_ack_delay; |
| resp->phys_port_cnt = min_t(u32, ib_dev->phys_port_cnt, U8_MAX); |
| } |
| |
| static int ib_uverbs_query_device(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_query_device cmd; |
| struct ib_uverbs_query_device_resp resp; |
| struct ib_ucontext *ucontext; |
| int ret; |
| |
| ucontext = ib_uverbs_get_ucontext(attrs); |
| if (IS_ERR(ucontext)) |
| return PTR_ERR(ucontext); |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| memset(&resp, 0, sizeof resp); |
| copy_query_dev_fields(ucontext, &resp, &ucontext->device->attrs); |
| |
| return uverbs_response(attrs, &resp, sizeof(resp)); |
| } |
| |
| static int ib_uverbs_query_port(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_query_port cmd; |
| struct ib_uverbs_query_port_resp resp; |
| struct ib_port_attr attr; |
| int ret; |
| struct ib_ucontext *ucontext; |
| struct ib_device *ib_dev; |
| |
| ucontext = ib_uverbs_get_ucontext(attrs); |
| if (IS_ERR(ucontext)) |
| return PTR_ERR(ucontext); |
| ib_dev = ucontext->device; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| ret = ib_query_port(ib_dev, cmd.port_num, &attr); |
| if (ret) |
| return ret; |
| |
| memset(&resp, 0, sizeof resp); |
| copy_port_attr_to_resp(&attr, &resp, ib_dev, cmd.port_num); |
| |
| return uverbs_response(attrs, &resp, sizeof(resp)); |
| } |
| |
| static int ib_uverbs_alloc_pd(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_alloc_pd_resp resp = {}; |
| struct ib_uverbs_alloc_pd cmd; |
| struct ib_uobject *uobj; |
| struct ib_pd *pd; |
| int ret; |
| struct ib_device *ib_dev; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| uobj = uobj_alloc(UVERBS_OBJECT_PD, attrs, &ib_dev); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| pd = rdma_zalloc_drv_obj(ib_dev, ib_pd); |
| if (!pd) { |
| ret = -ENOMEM; |
| goto err; |
| } |
| |
| pd->device = ib_dev; |
| pd->uobject = uobj; |
| atomic_set(&pd->usecnt, 0); |
| |
| rdma_restrack_new(&pd->res, RDMA_RESTRACK_PD); |
| rdma_restrack_set_name(&pd->res, NULL); |
| |
| ret = ib_dev->ops.alloc_pd(pd, &attrs->driver_udata); |
| if (ret) |
| goto err_alloc; |
| rdma_restrack_add(&pd->res); |
| |
| uobj->object = pd; |
| uobj_finalize_uobj_create(uobj, attrs); |
| |
| resp.pd_handle = uobj->id; |
| return uverbs_response(attrs, &resp, sizeof(resp)); |
| |
| err_alloc: |
| rdma_restrack_put(&pd->res); |
| kfree(pd); |
| err: |
| uobj_alloc_abort(uobj, attrs); |
| return ret; |
| } |
| |
| static int ib_uverbs_dealloc_pd(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_dealloc_pd cmd; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| return uobj_perform_destroy(UVERBS_OBJECT_PD, cmd.pd_handle, attrs); |
| } |
| |
| struct xrcd_table_entry { |
| struct rb_node node; |
| struct ib_xrcd *xrcd; |
| struct inode *inode; |
| }; |
| |
| static int xrcd_table_insert(struct ib_uverbs_device *dev, |
| struct inode *inode, |
| struct ib_xrcd *xrcd) |
| { |
| struct xrcd_table_entry *entry, *scan; |
| struct rb_node **p = &dev->xrcd_tree.rb_node; |
| struct rb_node *parent = NULL; |
| |
| entry = kmalloc(sizeof *entry, GFP_KERNEL); |
| if (!entry) |
| return -ENOMEM; |
| |
| entry->xrcd = xrcd; |
| entry->inode = inode; |
| |
| while (*p) { |
| parent = *p; |
| scan = rb_entry(parent, struct xrcd_table_entry, node); |
| |
| if (inode < scan->inode) { |
| p = &(*p)->rb_left; |
| } else if (inode > scan->inode) { |
| p = &(*p)->rb_right; |
| } else { |
| kfree(entry); |
| return -EEXIST; |
| } |
| } |
| |
| rb_link_node(&entry->node, parent, p); |
| rb_insert_color(&entry->node, &dev->xrcd_tree); |
| igrab(inode); |
| return 0; |
| } |
| |
| static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev, |
| struct inode *inode) |
| { |
| struct xrcd_table_entry *entry; |
| struct rb_node *p = dev->xrcd_tree.rb_node; |
| |
| while (p) { |
| entry = rb_entry(p, struct xrcd_table_entry, node); |
| |
| if (inode < entry->inode) |
| p = p->rb_left; |
| else if (inode > entry->inode) |
| p = p->rb_right; |
| else |
| return entry; |
| } |
| |
| return NULL; |
| } |
| |
| static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode) |
| { |
| struct xrcd_table_entry *entry; |
| |
| entry = xrcd_table_search(dev, inode); |
| if (!entry) |
| return NULL; |
| |
| return entry->xrcd; |
| } |
| |
| static void xrcd_table_delete(struct ib_uverbs_device *dev, |
| struct inode *inode) |
| { |
| struct xrcd_table_entry *entry; |
| |
| entry = xrcd_table_search(dev, inode); |
| if (entry) { |
| iput(inode); |
| rb_erase(&entry->node, &dev->xrcd_tree); |
| kfree(entry); |
| } |
| } |
| |
| static int ib_uverbs_open_xrcd(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_device *ibudev = attrs->ufile->device; |
| struct ib_uverbs_open_xrcd_resp resp = {}; |
| struct ib_uverbs_open_xrcd cmd; |
| struct ib_uxrcd_object *obj; |
| struct ib_xrcd *xrcd = NULL; |
| struct inode *inode = NULL; |
| int new_xrcd = 0; |
| struct ib_device *ib_dev; |
| struct fd f = {}; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| mutex_lock(&ibudev->xrcd_tree_mutex); |
| |
| if (cmd.fd != -1) { |
| /* search for file descriptor */ |
| f = fdget(cmd.fd); |
| if (!f.file) { |
| ret = -EBADF; |
| goto err_tree_mutex_unlock; |
| } |
| |
| inode = file_inode(f.file); |
| xrcd = find_xrcd(ibudev, inode); |
| if (!xrcd && !(cmd.oflags & O_CREAT)) { |
| /* no file descriptor. Need CREATE flag */ |
| ret = -EAGAIN; |
| goto err_tree_mutex_unlock; |
| } |
| |
| if (xrcd && cmd.oflags & O_EXCL) { |
| ret = -EINVAL; |
| goto err_tree_mutex_unlock; |
| } |
| } |
| |
| obj = (struct ib_uxrcd_object *)uobj_alloc(UVERBS_OBJECT_XRCD, attrs, |
| &ib_dev); |
| if (IS_ERR(obj)) { |
| ret = PTR_ERR(obj); |
| goto err_tree_mutex_unlock; |
| } |
| |
| if (!xrcd) { |
| xrcd = ib_alloc_xrcd_user(ib_dev, inode, &attrs->driver_udata); |
| if (IS_ERR(xrcd)) { |
| ret = PTR_ERR(xrcd); |
| goto err; |
| } |
| new_xrcd = 1; |
| } |
| |
| atomic_set(&obj->refcnt, 0); |
| obj->uobject.object = xrcd; |
| |
| if (inode) { |
| if (new_xrcd) { |
| /* create new inode/xrcd table entry */ |
| ret = xrcd_table_insert(ibudev, inode, xrcd); |
| if (ret) |
| goto err_dealloc_xrcd; |
| } |
| atomic_inc(&xrcd->usecnt); |
| } |
| |
| if (f.file) |
| fdput(f); |
| |
| mutex_unlock(&ibudev->xrcd_tree_mutex); |
| uobj_finalize_uobj_create(&obj->uobject, attrs); |
| |
| resp.xrcd_handle = obj->uobject.id; |
| return uverbs_response(attrs, &resp, sizeof(resp)); |
| |
| err_dealloc_xrcd: |
| ib_dealloc_xrcd_user(xrcd, uverbs_get_cleared_udata(attrs)); |
| |
| err: |
| uobj_alloc_abort(&obj->uobject, attrs); |
| |
| err_tree_mutex_unlock: |
| if (f.file) |
| fdput(f); |
| |
| mutex_unlock(&ibudev->xrcd_tree_mutex); |
| |
| return ret; |
| } |
| |
| static int ib_uverbs_close_xrcd(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_close_xrcd cmd; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| return uobj_perform_destroy(UVERBS_OBJECT_XRCD, cmd.xrcd_handle, attrs); |
| } |
| |
| int ib_uverbs_dealloc_xrcd(struct ib_uobject *uobject, struct ib_xrcd *xrcd, |
| enum rdma_remove_reason why, |
| struct uverbs_attr_bundle *attrs) |
| { |
| struct inode *inode; |
| int ret; |
| struct ib_uverbs_device *dev = attrs->ufile->device; |
| |
| inode = xrcd->inode; |
| if (inode && !atomic_dec_and_test(&xrcd->usecnt)) |
| return 0; |
| |
| ret = ib_dealloc_xrcd_user(xrcd, &attrs->driver_udata); |
| if (ret) { |
| atomic_inc(&xrcd->usecnt); |
| return ret; |
| } |
| |
| if (inode) |
| xrcd_table_delete(dev, inode); |
| |
| return 0; |
| } |
| |
| static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_reg_mr_resp resp = {}; |
| struct ib_uverbs_reg_mr cmd; |
| struct ib_uobject *uobj; |
| struct ib_pd *pd; |
| struct ib_mr *mr; |
| int ret; |
| struct ib_device *ib_dev; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) |
| return -EINVAL; |
| |
| uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| ret = ib_check_mr_access(ib_dev, cmd.access_flags); |
| if (ret) |
| goto err_free; |
| |
| pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); |
| if (!pd) { |
| ret = -EINVAL; |
| goto err_free; |
| } |
| |
| mr = pd->device->ops.reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, |
| cmd.access_flags, |
| &attrs->driver_udata); |
| if (IS_ERR(mr)) { |
| ret = PTR_ERR(mr); |
| goto err_put; |
| } |
| |
| mr->device = pd->device; |
| mr->pd = pd; |
| mr->type = IB_MR_TYPE_USER; |
| mr->dm = NULL; |
| mr->sig_attrs = NULL; |
| mr->uobject = uobj; |
| atomic_inc(&pd->usecnt); |
| mr->iova = cmd.hca_va; |
| |
| rdma_restrack_new(&mr->res, RDMA_RESTRACK_MR); |
| rdma_restrack_set_name(&mr->res, NULL); |
| rdma_restrack_add(&mr->res); |
| |
| uobj->object = mr; |
| uobj_put_obj_read(pd); |
| uobj_finalize_uobj_create(uobj, attrs); |
| |
| resp.lkey = mr->lkey; |
| resp.rkey = mr->rkey; |
| resp.mr_handle = uobj->id; |
| return uverbs_response(attrs, &resp, sizeof(resp)); |
| |
| err_put: |
| uobj_put_obj_read(pd); |
| err_free: |
| uobj_alloc_abort(uobj, attrs); |
| return ret; |
| } |
| |
| static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_rereg_mr cmd; |
| struct ib_uverbs_rereg_mr_resp resp; |
| struct ib_mr *mr; |
| int ret; |
| struct ib_uobject *uobj; |
| struct ib_uobject *new_uobj; |
| struct ib_device *ib_dev; |
| struct ib_pd *orig_pd; |
| struct ib_pd *new_pd; |
| struct ib_mr *new_mr; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| if (!cmd.flags) |
| return -EINVAL; |
| |
| if (cmd.flags & ~IB_MR_REREG_SUPPORTED) |
| return -EOPNOTSUPP; |
| |
| if ((cmd.flags & IB_MR_REREG_TRANS) && |
| (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) |
| return -EINVAL; |
| |
| uobj = uobj_get_write(UVERBS_OBJECT_MR, cmd.mr_handle, attrs); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| mr = uobj->object; |
| |
| if (mr->dm) { |
| ret = -EINVAL; |
| goto put_uobjs; |
| } |
| |
| if (cmd.flags & IB_MR_REREG_ACCESS) { |
| ret = ib_check_mr_access(mr->device, cmd.access_flags); |
| if (ret) |
| goto put_uobjs; |
| } |
| |
| orig_pd = mr->pd; |
| if (cmd.flags & IB_MR_REREG_PD) { |
| new_pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, |
| attrs); |
| if (!new_pd) { |
| ret = -EINVAL; |
| goto put_uobjs; |
| } |
| } else { |
| new_pd = mr->pd; |
| } |
| |
| /* |
| * The driver might create a new HW object as part of the rereg, we need |
| * to have a uobject ready to hold it. |
| */ |
| new_uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev); |
| if (IS_ERR(new_uobj)) { |
| ret = PTR_ERR(new_uobj); |
| goto put_uobj_pd; |
| } |
| |
| new_mr = ib_dev->ops.rereg_user_mr(mr, cmd.flags, cmd.start, cmd.length, |
| cmd.hca_va, cmd.access_flags, new_pd, |
| &attrs->driver_udata); |
| if (IS_ERR(new_mr)) { |
| ret = PTR_ERR(new_mr); |
| goto put_new_uobj; |
| } |
| if (new_mr) { |
| new_mr->device = new_pd->device; |
| new_mr->pd = new_pd; |
| new_mr->type = IB_MR_TYPE_USER; |
| new_mr->uobject = uobj; |
| atomic_inc(&new_pd->usecnt); |
| new_uobj->object = new_mr; |
| |
| rdma_restrack_new(&new_mr->res, RDMA_RESTRACK_MR); |
| rdma_restrack_set_name(&new_mr->res, NULL); |
| rdma_restrack_add(&new_mr->res); |
| |
| /* |
| * The new uobj for the new HW object is put into the same spot |
| * in the IDR and the old uobj & HW object is deleted. |
| */ |
| rdma_assign_uobject(uobj, new_uobj, attrs); |
| rdma_alloc_commit_uobject(new_uobj, attrs); |
| uobj_put_destroy(uobj); |
| new_uobj = NULL; |
| uobj = NULL; |
| mr = new_mr; |
| } else { |
| if (cmd.flags & IB_MR_REREG_PD) { |
| atomic_dec(&orig_pd->usecnt); |
| mr->pd = new_pd; |
| atomic_inc(&new_pd->usecnt); |
| } |
| if (cmd.flags & IB_MR_REREG_TRANS) |
| mr->iova = cmd.hca_va; |
| } |
| |
| memset(&resp, 0, sizeof(resp)); |
| resp.lkey = mr->lkey; |
| resp.rkey = mr->rkey; |
| |
| ret = uverbs_response(attrs, &resp, sizeof(resp)); |
| |
| put_new_uobj: |
| if (new_uobj) |
| uobj_alloc_abort(new_uobj, attrs); |
| put_uobj_pd: |
| if (cmd.flags & IB_MR_REREG_PD) |
| uobj_put_obj_read(new_pd); |
| |
| put_uobjs: |
| if (uobj) |
| uobj_put_write(uobj); |
| |
| return ret; |
| } |
| |
| static int ib_uverbs_dereg_mr(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_dereg_mr cmd; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| return uobj_perform_destroy(UVERBS_OBJECT_MR, cmd.mr_handle, attrs); |
| } |
| |
| static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_alloc_mw cmd; |
| struct ib_uverbs_alloc_mw_resp resp = {}; |
| struct ib_uobject *uobj; |
| struct ib_pd *pd; |
| struct ib_mw *mw; |
| int ret; |
| struct ib_device *ib_dev; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| uobj = uobj_alloc(UVERBS_OBJECT_MW, attrs, &ib_dev); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); |
| if (!pd) { |
| ret = -EINVAL; |
| goto err_free; |
| } |
| |
| if (cmd.mw_type != IB_MW_TYPE_1 && cmd.mw_type != IB_MW_TYPE_2) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| |
| mw = rdma_zalloc_drv_obj(ib_dev, ib_mw); |
| if (!mw) { |
| ret = -ENOMEM; |
| goto err_put; |
| } |
| |
| mw->device = ib_dev; |
| mw->pd = pd; |
| mw->uobject = uobj; |
| mw->type = cmd.mw_type; |
| |
| ret = pd->device->ops.alloc_mw(mw, &attrs->driver_udata); |
| if (ret) |
| goto err_alloc; |
| |
| atomic_inc(&pd->usecnt); |
| |
| uobj->object = mw; |
| uobj_put_obj_read(pd); |
| uobj_finalize_uobj_create(uobj, attrs); |
| |
| resp.rkey = mw->rkey; |
| resp.mw_handle = uobj->id; |
| return uverbs_response(attrs, &resp, sizeof(resp)); |
| |
| err_alloc: |
| kfree(mw); |
| err_put: |
| uobj_put_obj_read(pd); |
| err_free: |
| uobj_alloc_abort(uobj, attrs); |
| return ret; |
| } |
| |
| static int ib_uverbs_dealloc_mw(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_dealloc_mw cmd; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| return uobj_perform_destroy(UVERBS_OBJECT_MW, cmd.mw_handle, attrs); |
| } |
| |
| static int ib_uverbs_create_comp_channel(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_create_comp_channel cmd; |
| struct ib_uverbs_create_comp_channel_resp resp; |
| struct ib_uobject *uobj; |
| struct ib_uverbs_completion_event_file *ev_file; |
| struct ib_device *ib_dev; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| uobj = uobj_alloc(UVERBS_OBJECT_COMP_CHANNEL, attrs, &ib_dev); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| ev_file = container_of(uobj, struct ib_uverbs_completion_event_file, |
| uobj); |
| ib_uverbs_init_event_queue(&ev_file->ev_queue); |
| uobj_finalize_uobj_create(uobj, attrs); |
| |
| resp.fd = uobj->id; |
| return uverbs_response(attrs, &resp, sizeof(resp)); |
| } |
| |
| static int create_cq(struct uverbs_attr_bundle *attrs, |
| struct ib_uverbs_ex_create_cq *cmd) |
| { |
| struct ib_ucq_object *obj; |
| struct ib_uverbs_completion_event_file *ev_file = NULL; |
| struct ib_cq *cq; |
| int ret; |
| struct ib_uverbs_ex_create_cq_resp resp = {}; |
| struct ib_cq_init_attr attr = {}; |
| struct ib_device *ib_dev; |
| |
| if (cmd->comp_vector >= attrs->ufile->device->num_comp_vectors) |
| return -EINVAL; |
| |
| obj = (struct ib_ucq_object *)uobj_alloc(UVERBS_OBJECT_CQ, attrs, |
| &ib_dev); |
| if (IS_ERR(obj)) |
| return PTR_ERR(obj); |
| |
| if (cmd->comp_channel >= 0) { |
| ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel, attrs); |
| if (IS_ERR(ev_file)) { |
| ret = PTR_ERR(ev_file); |
| goto err; |
| } |
| } |
| |
| obj->uevent.uobject.user_handle = cmd->user_handle; |
| INIT_LIST_HEAD(&obj->comp_list); |
| INIT_LIST_HEAD(&obj->uevent.event_list); |
| |
| attr.cqe = cmd->cqe; |
| attr.comp_vector = cmd->comp_vector; |
| attr.flags = cmd->flags; |
| |
| cq = rdma_zalloc_drv_obj(ib_dev, ib_cq); |
| if (!cq) { |
| ret = -ENOMEM; |
| goto err_file; |
| } |
| cq->device = ib_dev; |
| cq->uobject = obj; |
| cq->comp_handler = ib_uverbs_comp_handler; |
| cq->event_handler = ib_uverbs_cq_event_handler; |
| cq->cq_context = ev_file ? &ev_file->ev_queue : NULL; |
| atomic_set(&cq->usecnt, 0); |
| |
| rdma_restrack_new(&cq->res, RDMA_RESTRACK_CQ); |
| rdma_restrack_set_name(&cq->res, NULL); |
| |
| ret = ib_dev->ops.create_cq(cq, &attr, &attrs->driver_udata); |
| if (ret) |
| goto err_free; |
| rdma_restrack_add(&cq->res); |
| |
| obj->uevent.uobject.object = cq; |
| obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file); |
| if (obj->uevent.event_file) |
| uverbs_uobject_get(&obj->uevent.event_file->uobj); |
| uobj_finalize_uobj_create(&obj->uevent.uobject, attrs); |
| |
| resp.base.cq_handle = obj->uevent.uobject.id; |
| resp.base.cqe = cq->cqe; |
| resp.response_length = uverbs_response_length(attrs, sizeof(resp)); |
| return uverbs_response(attrs, &resp, sizeof(resp)); |
| |
| err_free: |
| rdma_restrack_put(&cq->res); |
| kfree(cq); |
| err_file: |
| if (ev_file) |
| ib_uverbs_release_ucq(ev_file, obj); |
| err: |
| uobj_alloc_abort(&obj->uevent.uobject, attrs); |
| return ret; |
| } |
| |
| static int ib_uverbs_create_cq(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_create_cq cmd; |
| struct ib_uverbs_ex_create_cq cmd_ex; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| memset(&cmd_ex, 0, sizeof(cmd_ex)); |
| cmd_ex.user_handle = cmd.user_handle; |
| cmd_ex.cqe = cmd.cqe; |
| cmd_ex.comp_vector = cmd.comp_vector; |
| cmd_ex.comp_channel = cmd.comp_channel; |
| |
| return create_cq(attrs, &cmd_ex); |
| } |
| |
| static int ib_uverbs_ex_create_cq(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_ex_create_cq cmd; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| if (cmd.comp_mask) |
| return -EINVAL; |
| |
| if (cmd.reserved) |
| return -EINVAL; |
| |
| return create_cq(attrs, &cmd); |
| } |
| |
| static int ib_uverbs_resize_cq(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_resize_cq cmd; |
| struct ib_uverbs_resize_cq_resp resp = {}; |
| struct ib_cq *cq; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); |
| if (!cq) |
| return -EINVAL; |
| |
| ret = cq->device->ops.resize_cq(cq, cmd.cqe, &attrs->driver_udata); |
| if (ret) |
| goto out; |
| |
| resp.cqe = cq->cqe; |
| |
| ret = uverbs_response(attrs, &resp, sizeof(resp)); |
| out: |
| rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| |
| return ret; |
| } |
| |
| static int copy_wc_to_user(struct ib_device *ib_dev, void __user *dest, |
| struct ib_wc *wc) |
| { |
| struct ib_uverbs_wc tmp; |
| |
| tmp.wr_id = wc->wr_id; |
| tmp.status = wc->status; |
| tmp.opcode = wc->opcode; |
| tmp.vendor_err = wc->vendor_err; |
| tmp.byte_len = wc->byte_len; |
| tmp.ex.imm_data = wc->ex.imm_data; |
| tmp.qp_num = wc->qp->qp_num; |
| tmp.src_qp = wc->src_qp; |
| tmp.wc_flags = wc->wc_flags; |
| tmp.pkey_index = wc->pkey_index; |
| if (rdma_cap_opa_ah(ib_dev, wc->port_num)) |
| tmp.slid = OPA_TO_IB_UCAST_LID(wc->slid); |
| else |
| tmp.slid = ib_lid_cpu16(wc->slid); |
| tmp.sl = wc->sl; |
| tmp.dlid_path_bits = wc->dlid_path_bits; |
| tmp.port_num = wc->port_num; |
| tmp.reserved = 0; |
| |
| if (copy_to_user(dest, &tmp, sizeof tmp)) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| static int ib_uverbs_poll_cq(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_poll_cq cmd; |
| struct ib_uverbs_poll_cq_resp resp; |
| u8 __user *header_ptr; |
| u8 __user *data_ptr; |
| struct ib_cq *cq; |
| struct ib_wc wc; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); |
| if (!cq) |
| return -EINVAL; |
| |
| /* we copy a struct ib_uverbs_poll_cq_resp to user space */ |
| header_ptr = attrs->ucore.outbuf; |
| data_ptr = header_ptr + sizeof resp; |
| |
| memset(&resp, 0, sizeof resp); |
| while (resp.count < cmd.ne) { |
| ret = ib_poll_cq(cq, 1, &wc); |
| if (ret < 0) |
| goto out_put; |
| if (!ret) |
| break; |
| |
| ret = copy_wc_to_user(cq->device, data_ptr, &wc); |
| if (ret) |
| goto out_put; |
| |
| data_ptr += sizeof(struct ib_uverbs_wc); |
| ++resp.count; |
| } |
| |
| if (copy_to_user(header_ptr, &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto out_put; |
| } |
| ret = 0; |
| |
| if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT)) |
| ret = uverbs_output_written(attrs, UVERBS_ATTR_CORE_OUT); |
| |
| out_put: |
| rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| return ret; |
| } |
| |
| static int ib_uverbs_req_notify_cq(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_req_notify_cq cmd; |
| struct ib_cq *cq; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); |
| if (!cq) |
| return -EINVAL; |
| |
| ib_req_notify_cq(cq, cmd.solicited_only ? |
| IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); |
| |
| rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| return 0; |
| } |
| |
| static int ib_uverbs_destroy_cq(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_destroy_cq cmd; |
| struct ib_uverbs_destroy_cq_resp resp; |
| struct ib_uobject *uobj; |
| struct ib_ucq_object *obj; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| uobj = uobj_get_destroy(UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| obj = container_of(uobj, struct ib_ucq_object, uevent.uobject); |
| memset(&resp, 0, sizeof(resp)); |
| resp.comp_events_reported = obj->comp_events_reported; |
| resp.async_events_reported = obj->uevent.events_reported; |
| |
| uobj_put_destroy(uobj); |
| |
| return uverbs_response(attrs, &resp, sizeof(resp)); |
| } |
| |
| static int create_qp(struct uverbs_attr_bundle *attrs, |
| struct ib_uverbs_ex_create_qp *cmd) |
| { |
| struct ib_uqp_object *obj; |
| struct ib_device *device; |
| struct ib_pd *pd = NULL; |
| struct ib_xrcd *xrcd = NULL; |
| struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT); |
| struct ib_cq *scq = NULL, *rcq = NULL; |
| struct ib_srq *srq = NULL; |
| struct ib_qp *qp; |
| struct ib_qp_init_attr attr = {}; |
| struct ib_uverbs_ex_create_qp_resp resp = {}; |
| int ret; |
| struct ib_rwq_ind_table *ind_tbl = NULL; |
| bool has_sq = true; |
| struct ib_device *ib_dev; |
| |
| switch (cmd->qp_type) { |
| case IB_QPT_RAW_PACKET: |
| if (!capable(CAP_NET_RAW)) |
| return -EPERM; |
| break; |
| case IB_QPT_RC: |
| case IB_QPT_UC: |
| case IB_QPT_UD: |
| case IB_QPT_XRC_INI: |
| case IB_QPT_XRC_TGT: |
| case IB_QPT_DRIVER: |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs, |
| &ib_dev); |
| if (IS_ERR(obj)) |
| return PTR_ERR(obj); |
| obj->uxrcd = NULL; |
| obj->uevent.uobject.user_handle = cmd->user_handle; |
| mutex_init(&obj->mcast_lock); |
| |
| if (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE) { |
| ind_tbl = uobj_get_obj_read(rwq_ind_table, |
| UVERBS_OBJECT_RWQ_IND_TBL, |
| cmd->rwq_ind_tbl_handle, attrs); |
| if (!ind_tbl) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| |
| attr.rwq_ind_tbl = ind_tbl; |
| } |
| |
| if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| |
| if (ind_tbl && !cmd->max_send_wr) |
| has_sq = false; |
| |
| if (cmd->qp_type == IB_QPT_XRC_TGT) { |
| xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->pd_handle, |
| attrs); |
| |
| if (IS_ERR(xrcd_uobj)) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| |
| xrcd = (struct ib_xrcd *)xrcd_uobj->object; |
| if (!xrcd) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| device = xrcd->device; |
| } else { |
| if (cmd->qp_type == IB_QPT_XRC_INI) { |
| cmd->max_recv_wr = 0; |
| cmd->max_recv_sge = 0; |
| } else { |
| if (cmd->is_srq) { |
| srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, |
| cmd->srq_handle, attrs); |
| if (!srq || srq->srq_type == IB_SRQT_XRC) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| } |
| |
| if (!ind_tbl) { |
| if (cmd->recv_cq_handle != cmd->send_cq_handle) { |
| rcq = uobj_get_obj_read( |
| cq, UVERBS_OBJECT_CQ, |
| cmd->recv_cq_handle, attrs); |
| if (!rcq) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| } |
| } |
| } |
| |
| if (has_sq) |
| scq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, |
| cmd->send_cq_handle, attrs); |
| if (!ind_tbl && cmd->qp_type != IB_QPT_XRC_INI) |
| rcq = rcq ?: scq; |
| pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, |
| attrs); |
| if (!pd || (!scq && has_sq)) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| |
| device = pd->device; |
| } |
| |
| attr.event_handler = ib_uverbs_qp_event_handler; |
| attr.send_cq = scq; |
| attr.recv_cq = rcq; |
| attr.srq = srq; |
| attr.xrcd = xrcd; |
| attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR : |
| IB_SIGNAL_REQ_WR; |
| attr.qp_type = cmd->qp_type; |
| attr.create_flags = 0; |
| |
| attr.cap.max_send_wr = cmd->max_send_wr; |
| attr.cap.max_recv_wr = cmd->max_recv_wr; |
| attr.cap.max_send_sge = cmd->max_send_sge; |
| attr.cap.max_recv_sge = cmd->max_recv_sge; |
| attr.cap.max_inline_data = cmd->max_inline_data; |
| |
| INIT_LIST_HEAD(&obj->uevent.event_list); |
| INIT_LIST_HEAD(&obj->mcast_list); |
| |
| attr.create_flags = cmd->create_flags; |
| if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK | |
| IB_QP_CREATE_CROSS_CHANNEL | |
| IB_QP_CREATE_MANAGED_SEND | |
| IB_QP_CREATE_MANAGED_RECV | |
| IB_QP_CREATE_SCATTER_FCS | |
| IB_QP_CREATE_CVLAN_STRIPPING | |
| IB_QP_CREATE_SOURCE_QPN | |
| IB_QP_CREATE_PCI_WRITE_END_PADDING)) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| |
| if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) { |
| if (!capable(CAP_NET_RAW)) { |
| ret = -EPERM; |
| goto err_put; |
| } |
| |
| attr.source_qpn = cmd->source_qpn; |
| } |
| |
| qp = ib_create_qp_user(device, pd, &attr, &attrs->driver_udata, obj, |
| KBUILD_MODNAME); |
| if (IS_ERR(qp)) { |
| ret = PTR_ERR(qp); |
| goto err_put; |
| } |
| ib_qp_usecnt_inc(qp); |
| |
| obj->uevent.uobject.object = qp; |
| obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file); |
| if (obj->uevent.event_file) |
| uverbs_uobject_get(&obj->uevent.event_file->uobj); |
| |
| if (xrcd) { |
| obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, |
| uobject); |
| atomic_inc(&obj->uxrcd->refcnt); |
| uobj_put_read(xrcd_uobj); |
| } |
| |
| if (pd) |
| uobj_put_obj_read(pd); |
| if (scq) |
| rdma_lookup_put_uobject(&scq->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| if (rcq && rcq != scq) |
| rdma_lookup_put_uobject(&rcq->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| if (srq) |
| rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| if (ind_tbl) |
| uobj_put_obj_read(ind_tbl); |
| uobj_finalize_uobj_create(&obj->uevent.uobject, attrs); |
| |
| resp.base.qpn = qp->qp_num; |
| resp.base.qp_handle = obj->uevent.uobject.id; |
| resp.base.max_recv_sge = attr.cap.max_recv_sge; |
| resp.base.max_send_sge = attr.cap.max_send_sge; |
| resp.base.max_recv_wr = attr.cap.max_recv_wr; |
| resp.base.max_send_wr = attr.cap.max_send_wr; |
| resp.base.max_inline_data = attr.cap.max_inline_data; |
| resp.response_length = uverbs_response_length(attrs, sizeof(resp)); |
| return uverbs_response(attrs, &resp, sizeof(resp)); |
| |
| err_put: |
| if (!IS_ERR(xrcd_uobj)) |
| uobj_put_read(xrcd_uobj); |
| if (pd) |
| uobj_put_obj_read(pd); |
| if (scq) |
| rdma_lookup_put_uobject(&scq->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| if (rcq && rcq != scq) |
| rdma_lookup_put_uobject(&rcq->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| if (srq) |
| rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| if (ind_tbl) |
| uobj_put_obj_read(ind_tbl); |
| |
| uobj_alloc_abort(&obj->uevent.uobject, attrs); |
| return ret; |
| } |
| |
| static int ib_uverbs_create_qp(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_create_qp cmd; |
| struct ib_uverbs_ex_create_qp cmd_ex; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| memset(&cmd_ex, 0, sizeof(cmd_ex)); |
| cmd_ex.user_handle = cmd.user_handle; |
| cmd_ex.pd_handle = cmd.pd_handle; |
| cmd_ex.send_cq_handle = cmd.send_cq_handle; |
| cmd_ex.recv_cq_handle = cmd.recv_cq_handle; |
| cmd_ex.srq_handle = cmd.srq_handle; |
| cmd_ex.max_send_wr = cmd.max_send_wr; |
| cmd_ex.max_recv_wr = cmd.max_recv_wr; |
| cmd_ex.max_send_sge = cmd.max_send_sge; |
| cmd_ex.max_recv_sge = cmd.max_recv_sge; |
| cmd_ex.max_inline_data = cmd.max_inline_data; |
| cmd_ex.sq_sig_all = cmd.sq_sig_all; |
| cmd_ex.qp_type = cmd.qp_type; |
| cmd_ex.is_srq = cmd.is_srq; |
| |
| return create_qp(attrs, &cmd_ex); |
| } |
| |
| static int ib_uverbs_ex_create_qp(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_ex_create_qp cmd; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK) |
| return -EINVAL; |
| |
| if (cmd.reserved) |
| return -EINVAL; |
| |
| return create_qp(attrs, &cmd); |
| } |
| |
| static int ib_uverbs_open_qp(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_create_qp_resp resp = {}; |
| struct ib_uverbs_open_qp cmd; |
| struct ib_uqp_object *obj; |
| struct ib_xrcd *xrcd; |
| struct ib_qp *qp; |
| struct ib_qp_open_attr attr = {}; |
| int ret; |
| struct ib_uobject *xrcd_uobj; |
| struct ib_device *ib_dev; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs, |
| &ib_dev); |
| if (IS_ERR(obj)) |
| return PTR_ERR(obj); |
| |
| xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd.pd_handle, attrs); |
| if (IS_ERR(xrcd_uobj)) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| |
| xrcd = (struct ib_xrcd *)xrcd_uobj->object; |
| if (!xrcd) { |
| ret = -EINVAL; |
| goto err_xrcd; |
| } |
| |
| attr.event_handler = ib_uverbs_qp_event_handler; |
| attr.qp_num = cmd.qpn; |
| attr.qp_type = cmd.qp_type; |
| |
| INIT_LIST_HEAD(&obj->uevent.event_list); |
| INIT_LIST_HEAD(&obj->mcast_list); |
| |
| qp = ib_open_qp(xrcd, &attr); |
| if (IS_ERR(qp)) { |
| ret = PTR_ERR(qp); |
| goto err_xrcd; |
| } |
| |
| obj->uevent.uobject.object = qp; |
| obj->uevent.uobject.user_handle = cmd.user_handle; |
| |
| obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); |
| atomic_inc(&obj->uxrcd->refcnt); |
| qp->uobject = obj; |
| uobj_put_read(xrcd_uobj); |
| uobj_finalize_uobj_create(&obj->uevent.uobject, attrs); |
| |
| resp.qpn = qp->qp_num; |
| resp.qp_handle = obj->uevent.uobject.id; |
| return uverbs_response(attrs, &resp, sizeof(resp)); |
| |
| err_xrcd: |
| uobj_put_read(xrcd_uobj); |
| err_put: |
| uobj_alloc_abort(&obj->uevent.uobject, attrs); |
| return ret; |
| } |
| |
| static void copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest *uverb_attr, |
| struct rdma_ah_attr *rdma_attr) |
| { |
| const struct ib_global_route *grh; |
| |
| uverb_attr->dlid = rdma_ah_get_dlid(rdma_attr); |
| uverb_attr->sl = rdma_ah_get_sl(rdma_attr); |
| uverb_attr->src_path_bits = rdma_ah_get_path_bits(rdma_attr); |
| uverb_attr->static_rate = rdma_ah_get_static_rate(rdma_attr); |
| uverb_attr->is_global = !!(rdma_ah_get_ah_flags(rdma_attr) & |
| IB_AH_GRH); |
| if (uverb_attr->is_global) { |
| grh = rdma_ah_read_grh(rdma_attr); |
| memcpy(uverb_attr->dgid, grh->dgid.raw, 16); |
| uverb_attr->flow_label = grh->flow_label; |
| uverb_attr->sgid_index = grh->sgid_index; |
| uverb_attr->hop_limit = grh->hop_limit; |
| uverb_attr->traffic_class = grh->traffic_class; |
| } |
| uverb_attr->port_num = rdma_ah_get_port_num(rdma_attr); |
| } |
| |
| static int ib_uverbs_query_qp(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_query_qp cmd; |
| struct ib_uverbs_query_qp_resp resp; |
| struct ib_qp *qp; |
| struct ib_qp_attr *attr; |
| struct ib_qp_init_attr *init_attr; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| attr = kmalloc(sizeof *attr, GFP_KERNEL); |
| init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); |
| if (!attr || !init_attr) { |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); |
| if (!qp) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); |
| |
| rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| |
| if (ret) |
| goto out; |
| |
| memset(&resp, 0, sizeof resp); |
| |
| resp.qp_state = attr->qp_state; |
| resp.cur_qp_state = attr->cur_qp_state; |
| resp.path_mtu = attr->path_mtu; |
| resp.path_mig_state = attr->path_mig_state; |
| resp.qkey = attr->qkey; |
| resp.rq_psn = attr->rq_psn; |
| resp.sq_psn = attr->sq_psn; |
| resp.dest_qp_num = attr->dest_qp_num; |
| resp.qp_access_flags = attr->qp_access_flags; |
| resp.pkey_index = attr->pkey_index; |
| resp.alt_pkey_index = attr->alt_pkey_index; |
| resp.sq_draining = attr->sq_draining; |
| resp.max_rd_atomic = attr->max_rd_atomic; |
| resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; |
| resp.min_rnr_timer = attr->min_rnr_timer; |
| resp.port_num = attr->port_num; |
| resp.timeout = attr->timeout; |
| resp.retry_cnt = attr->retry_cnt; |
| resp.rnr_retry = attr->rnr_retry; |
| resp.alt_port_num = attr->alt_port_num; |
| resp.alt_timeout = attr->alt_timeout; |
| |
| copy_ah_attr_to_uverbs(&resp.dest, &attr->ah_attr); |
| copy_ah_attr_to_uverbs(&resp.alt_dest, &attr->alt_ah_attr); |
| |
| resp.max_send_wr = init_attr->cap.max_send_wr; |
| resp.max_recv_wr = init_attr->cap.max_recv_wr; |
| resp.max_send_sge = init_attr->cap.max_send_sge; |
| resp.max_recv_sge = init_attr->cap.max_recv_sge; |
| resp.max_inline_data = init_attr->cap.max_inline_data; |
| resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; |
| |
| ret = uverbs_response(attrs, &resp, sizeof(resp)); |
| |
| out: |
| kfree(attr); |
| kfree(init_attr); |
| |
| return ret; |
| } |
| |
| /* Remove ignored fields set in the attribute mask */ |
| static int modify_qp_mask(enum ib_qp_type qp_type, int mask) |
| { |
| switch (qp_type) { |
| case IB_QPT_XRC_INI: |
| return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER); |
| case IB_QPT_XRC_TGT: |
| return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT | |
| IB_QP_RNR_RETRY); |
| default: |
| return mask; |
| } |
| } |
| |
| static void copy_ah_attr_from_uverbs(struct ib_device *dev, |
| struct rdma_ah_attr *rdma_attr, |
| struct ib_uverbs_qp_dest *uverb_attr) |
| { |
| rdma_attr->type = rdma_ah_find_type(dev, uverb_attr->port_num); |
| if (uverb_attr->is_global) { |
| rdma_ah_set_grh(rdma_attr, NULL, |
| uverb_attr->flow_label, |
| uverb_attr->sgid_index, |
| uverb_attr->hop_limit, |
| uverb_attr->traffic_class); |
| rdma_ah_set_dgid_raw(rdma_attr, uverb_attr->dgid); |
| } else { |
| rdma_ah_set_ah_flags(rdma_attr, 0); |
| } |
| rdma_ah_set_dlid(rdma_attr, uverb_attr->dlid); |
| rdma_ah_set_sl(rdma_attr, uverb_attr->sl); |
| rdma_ah_set_path_bits(rdma_attr, uverb_attr->src_path_bits); |
| rdma_ah_set_static_rate(rdma_attr, uverb_attr->static_rate); |
| rdma_ah_set_port_num(rdma_attr, uverb_attr->port_num); |
| rdma_ah_set_make_grd(rdma_attr, false); |
| } |
| |
| static int modify_qp(struct uverbs_attr_bundle *attrs, |
| struct ib_uverbs_ex_modify_qp *cmd) |
| { |
| struct ib_qp_attr *attr; |
| struct ib_qp *qp; |
| int ret; |
| |
| attr = kzalloc(sizeof(*attr), GFP_KERNEL); |
| if (!attr) |
| return -ENOMEM; |
| |
| qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd->base.qp_handle, |
| attrs); |
| if (!qp) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| if ((cmd->base.attr_mask & IB_QP_PORT) && |
| !rdma_is_port_valid(qp->device, cmd->base.port_num)) { |
| ret = -EINVAL; |
| goto release_qp; |
| } |
| |
| if ((cmd->base.attr_mask & IB_QP_AV)) { |
| if (!rdma_is_port_valid(qp->device, cmd->base.dest.port_num)) { |
| ret = -EINVAL; |
| goto release_qp; |
| } |
| |
| if (cmd->base.attr_mask & IB_QP_STATE && |
| cmd->base.qp_state == IB_QPS_RTR) { |
| /* We are in INIT->RTR TRANSITION (if we are not, |
| * this transition will be rejected in subsequent checks). |
| * In the INIT->RTR transition, we cannot have IB_QP_PORT set, |
| * but the IB_QP_STATE flag is required. |
| * |
| * Since kernel 3.14 (commit dbf727de7440), the uverbs driver, |
| * when IB_QP_AV is set, has required inclusion of a valid |
| * port number in the primary AV. (AVs are created and handled |
| * differently for infiniband and ethernet (RoCE) ports). |
| * |
| * Check the port number included in the primary AV against |
| * the port number in the qp struct, which was set (and saved) |
| * in the RST->INIT transition. |
| */ |
| if (cmd->base.dest.port_num != qp->real_qp->port) { |
| ret = -EINVAL; |
| goto release_qp; |
| } |
| } else { |
| /* We are in SQD->SQD. (If we are not, this transition will |
| * be rejected later in the verbs layer checks). |
| * Check for both IB_QP_PORT and IB_QP_AV, these can be set |
| * together in the SQD->SQD transition. |
| * |
| * If only IP_QP_AV was set, add in IB_QP_PORT as well (the |
| * verbs layer driver does not track primary port changes |
| * resulting from path migration. Thus, in SQD, if the primary |
| * AV is modified, the primary port should also be modified). |
| * |
| * Note that in this transition, the IB_QP_STATE flag |
| * is not allowed. |
| */ |
| if (((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT)) |
| == (IB_QP_AV | IB_QP_PORT)) && |
| cmd->base.port_num != cmd->base.dest.port_num) { |
| ret = -EINVAL; |
| goto release_qp; |
| } |
| if ((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT)) |
| == IB_QP_AV) { |
| cmd->base.attr_mask |= IB_QP_PORT; |
| cmd->base.port_num = cmd->base.dest.port_num; |
| } |
| } |
| } |
| |
| if ((cmd->base.attr_mask & IB_QP_ALT_PATH) && |
| (!rdma_is_port_valid(qp->device, cmd->base.alt_port_num) || |
| !rdma_is_port_valid(qp->device, cmd->base.alt_dest.port_num) || |
| cmd->base.alt_port_num != cmd->base.alt_dest.port_num)) { |
| ret = -EINVAL; |
| goto release_qp; |
| } |
| |
| if ((cmd->base.attr_mask & IB_QP_CUR_STATE && |
| cmd->base.cur_qp_state > IB_QPS_ERR) || |
| (cmd->base.attr_mask & IB_QP_STATE && |
| cmd->base.qp_state > IB_QPS_ERR)) { |
| ret = -EINVAL; |
| goto release_qp; |
| } |
| |
| if (cmd->base.attr_mask & IB_QP_STATE) |
| attr->qp_state = cmd->base.qp_state; |
| if (cmd->base.attr_mask & IB_QP_CUR_STATE) |
| attr->cur_qp_state = cmd->base.cur_qp_state; |
| if (cmd->base.attr_mask & IB_QP_PATH_MTU) |
| attr->path_mtu = cmd->base.path_mtu; |
| if (cmd->base.attr_mask & IB_QP_PATH_MIG_STATE) |
| attr->path_mig_state = cmd->base.path_mig_state; |
| if (cmd->base.attr_mask & IB_QP_QKEY) |
| attr->qkey = cmd->base.qkey; |
| if (cmd->base.attr_mask & IB_QP_RQ_PSN) |
| attr->rq_psn = cmd->base.rq_psn; |
| if (cmd->base.attr_mask & IB_QP_SQ_PSN) |
| attr->sq_psn = cmd->base.sq_psn; |
| if (cmd->base.attr_mask & IB_QP_DEST_QPN) |
| attr->dest_qp_num = cmd->base.dest_qp_num; |
| if (cmd->base.attr_mask & IB_QP_ACCESS_FLAGS) |
| attr->qp_access_flags = cmd->base.qp_access_flags; |
| if (cmd->base.attr_mask & IB_QP_PKEY_INDEX) |
| attr->pkey_index = cmd->base.pkey_index; |
| if (cmd->base.attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) |
| attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify; |
| if (cmd->base.attr_mask & IB_QP_MAX_QP_RD_ATOMIC) |
| attr->max_rd_atomic = cmd->base.max_rd_atomic; |
| if (cmd->base.attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) |
| attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic; |
| if (cmd->base.attr_mask & IB_QP_MIN_RNR_TIMER) |
| attr->min_rnr_timer = cmd->base.min_rnr_timer; |
| if (cmd->base.attr_mask & IB_QP_PORT) |
| attr->port_num = cmd->base.port_num; |
| if (cmd->base.attr_mask & IB_QP_TIMEOUT) |
| attr->timeout = cmd->base.timeout; |
| if (cmd->base.attr_mask & IB_QP_RETRY_CNT) |
| attr->retry_cnt = cmd->base.retry_cnt; |
| if (cmd->base.attr_mask & IB_QP_RNR_RETRY) |
| attr->rnr_retry = cmd->base.rnr_retry; |
| if (cmd->base.attr_mask & IB_QP_ALT_PATH) { |
| attr->alt_port_num = cmd->base.alt_port_num; |
| attr->alt_timeout = cmd->base.alt_timeout; |
| attr->alt_pkey_index = cmd->base.alt_pkey_index; |
| } |
| if (cmd->base.attr_mask & IB_QP_RATE_LIMIT) |
| attr->rate_limit = cmd->rate_limit; |
| |
| if (cmd->base.attr_mask & IB_QP_AV) |
| copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr, |
| &cmd->base.dest); |
| |
| if (cmd->base.attr_mask & IB_QP_ALT_PATH) |
| copy_ah_attr_from_uverbs(qp->device, &attr->alt_ah_attr, |
| &cmd->base.alt_dest); |
| |
| ret = ib_modify_qp_with_udata(qp, attr, |
| modify_qp_mask(qp->qp_type, |
| cmd->base.attr_mask), |
| &attrs->driver_udata); |
| |
| release_qp: |
| rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| out: |
| kfree(attr); |
| |
| return ret; |
| } |
| |
| static int ib_uverbs_modify_qp(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_ex_modify_qp cmd; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd.base, sizeof(cmd.base)); |
| if (ret) |
| return ret; |
| |
| if (cmd.base.attr_mask & ~IB_QP_ATTR_STANDARD_BITS) |
| return -EOPNOTSUPP; |
| |
| return modify_qp(attrs, &cmd); |
| } |
| |
| static int ib_uverbs_ex_modify_qp(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_ex_modify_qp cmd; |
| struct ib_uverbs_ex_modify_qp_resp resp = { |
| .response_length = uverbs_response_length(attrs, sizeof(resp)) |
| }; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| /* |
| * Last bit is reserved for extending the attr_mask by |
| * using another field. |
| */ |
| if (cmd.base.attr_mask & ~(IB_QP_ATTR_STANDARD_BITS | IB_QP_RATE_LIMIT)) |
| return -EOPNOTSUPP; |
| |
| ret = modify_qp(attrs, &cmd); |
| if (ret) |
| return ret; |
| |
| return uverbs_response(attrs, &resp, sizeof(resp)); |
| } |
| |
| static int ib_uverbs_destroy_qp(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_destroy_qp cmd; |
| struct ib_uverbs_destroy_qp_resp resp; |
| struct ib_uobject *uobj; |
| struct ib_uqp_object *obj; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| uobj = uobj_get_destroy(UVERBS_OBJECT_QP, cmd.qp_handle, attrs); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); |
| memset(&resp, 0, sizeof(resp)); |
| resp.events_reported = obj->uevent.events_reported; |
| |
| uobj_put_destroy(uobj); |
| |
| return uverbs_response(attrs, &resp, sizeof(resp)); |
| } |
| |
| static void *alloc_wr(size_t wr_size, __u32 num_sge) |
| { |
| if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof(struct ib_sge))) / |
| sizeof(struct ib_sge)) |
| return NULL; |
| |
| return kmalloc(ALIGN(wr_size, sizeof(struct ib_sge)) + |
| num_sge * sizeof(struct ib_sge), |
| GFP_KERNEL); |
| } |
| |
| static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_post_send cmd; |
| struct ib_uverbs_post_send_resp resp; |
| struct ib_uverbs_send_wr *user_wr; |
| struct ib_send_wr *wr = NULL, *last, *next; |
| const struct ib_send_wr *bad_wr; |
| struct ib_qp *qp; |
| int i, sg_ind; |
| int is_ud; |
| int ret, ret2; |
| size_t next_size; |
| const struct ib_sge __user *sgls; |
| const void __user *wqes; |
| struct uverbs_req_iter iter; |
| |
| ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| wqes = uverbs_request_next_ptr(&iter, cmd.wqe_size * cmd.wr_count); |
| if (IS_ERR(wqes)) |
| return PTR_ERR(wqes); |
| sgls = uverbs_request_next_ptr( |
| &iter, cmd.sge_count * sizeof(struct ib_uverbs_sge)); |
| if (IS_ERR(sgls)) |
| return PTR_ERR(sgls); |
| ret = uverbs_request_finish(&iter); |
| if (ret) |
| return ret; |
| |
| user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); |
| if (!user_wr) |
| return -ENOMEM; |
| |
| qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); |
| if (!qp) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| is_ud = qp->qp_type == IB_QPT_UD; |
| sg_ind = 0; |
| last = NULL; |
| for (i = 0; i < cmd.wr_count; ++i) { |
| if (copy_from_user(user_wr, wqes + i * cmd.wqe_size, |
| cmd.wqe_size)) { |
| ret = -EFAULT; |
| goto out_put; |
| } |
| |
| if (user_wr->num_sge + sg_ind > cmd.sge_count) { |
| ret = -EINVAL; |
| goto out_put; |
| } |
| |
| if (is_ud) { |
| struct ib_ud_wr *ud; |
| |
| if (user_wr->opcode != IB_WR_SEND && |
| user_wr->opcode != IB_WR_SEND_WITH_IMM) { |
| ret = -EINVAL; |
| goto out_put; |
| } |
| |
| next_size = sizeof(*ud); |
| ud = alloc_wr(next_size, user_wr->num_sge); |
| if (!ud) { |
| ret = -ENOMEM; |
| goto out_put; |
| } |
| |
| ud->ah = uobj_get_obj_read(ah, UVERBS_OBJECT_AH, |
| user_wr->wr.ud.ah, attrs); |
| if (!ud->ah) { |
| kfree(ud); |
| ret = -EINVAL; |
| goto out_put; |
| } |
| ud->remote_qpn = user_wr->wr.ud.remote_qpn; |
| ud->remote_qkey = user_wr->wr.ud.remote_qkey; |
| |
| next = &ud->wr; |
| } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM || |
| user_wr->opcode == IB_WR_RDMA_WRITE || |
| user_wr->opcode == IB_WR_RDMA_READ) { |
| struct ib_rdma_wr *rdma; |
| |
| next_size = sizeof(*rdma); |
| rdma = alloc_wr(next_size, user_wr->num_sge); |
| if (!rdma) { |
| ret = -ENOMEM; |
| goto out_put; |
| } |
| |
| rdma->remote_addr = user_wr->wr.rdma.remote_addr; |
| rdma->rkey = user_wr->wr.rdma.rkey; |
| |
| next = &rdma->wr; |
| } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP || |
| user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) { |
| struct ib_atomic_wr *atomic; |
| |
| next_size = sizeof(*atomic); |
| atomic = alloc_wr(next_size, user_wr->num_sge); |
| if (!atomic) { |
| ret = -ENOMEM; |
| goto out_put; |
| } |
| |
| atomic->remote_addr = user_wr->wr.atomic.remote_addr; |
| atomic->compare_add = user_wr->wr.atomic.compare_add; |
| atomic->swap = user_wr->wr.atomic.swap; |
| atomic->rkey = user_wr->wr.atomic.rkey; |
| |
| next = &atomic->wr; |
| } else if (user_wr->opcode == IB_WR_SEND || |
| user_wr->opcode == IB_WR_SEND_WITH_IMM || |
| user_wr->opcode == IB_WR_SEND_WITH_INV) { |
| next_size = sizeof(*next); |
| next = alloc_wr(next_size, user_wr->num_sge); |
| if (!next) { |
| ret = -ENOMEM; |
| goto out_put; |
| } |
| } else { |
| ret = -EINVAL; |
| goto out_put; |
| } |
| |
| if (user_wr->opcode == IB_WR_SEND_WITH_IMM || |
| user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) { |
| next->ex.imm_data = |
| (__be32 __force) user_wr->ex.imm_data; |
| } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) { |
| next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey; |
| } |
| |
| if (!last) |
| wr = next; |
| else |
| last->next = next; |
| last = next; |
| |
| next->next = NULL; |
| next->wr_id = user_wr->wr_id; |
| next->num_sge = user_wr->num_sge; |
| next->opcode = user_wr->opcode; |
| next->send_flags = user_wr->send_flags; |
| |
| if (next->num_sge) { |
| next->sg_list = (void *) next + |
| ALIGN(next_size, sizeof(struct ib_sge)); |
| if (copy_from_user(next->sg_list, sgls + sg_ind, |
| next->num_sge * |
| sizeof(struct ib_sge))) { |
| ret = -EFAULT; |
| goto out_put; |
| } |
| sg_ind += next->num_sge; |
| } else |
| next->sg_list = NULL; |
| } |
| |
| resp.bad_wr = 0; |
| ret = qp->device->ops.post_send(qp->real_qp, wr, &bad_wr); |
| if (ret) |
| for (next = wr; next; next = next->next) { |
| ++resp.bad_wr; |
| if (next == bad_wr) |
| break; |
| } |
| |
| ret2 = uverbs_response(attrs, &resp, sizeof(resp)); |
| if (ret2) |
| ret = ret2; |
| |
| out_put: |
| rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| |
| while (wr) { |
| if (is_ud && ud_wr(wr)->ah) |
| uobj_put_obj_read(ud_wr(wr)->ah); |
| next = wr->next; |
| kfree(wr); |
| wr = next; |
| } |
| |
| out: |
| kfree(user_wr); |
| |
| return ret; |
| } |
| |
| static struct ib_recv_wr * |
| ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count, |
| u32 wqe_size, u32 sge_count) |
| { |
| struct ib_uverbs_recv_wr *user_wr; |
| struct ib_recv_wr *wr = NULL, *last, *next; |
| int sg_ind; |
| int i; |
| int ret; |
| const struct ib_sge __user *sgls; |
| const void __user *wqes; |
| |
| if (wqe_size < sizeof(struct ib_uverbs_recv_wr)) |
| return ERR_PTR(-EINVAL); |
| |
| wqes = uverbs_request_next_ptr(iter, wqe_size * wr_count); |
| if (IS_ERR(wqes)) |
| return ERR_CAST(wqes); |
| sgls = uverbs_request_next_ptr( |
| iter, sge_count * sizeof(struct ib_uverbs_sge)); |
| if (IS_ERR(sgls)) |
| return ERR_CAST(sgls); |
| ret = uverbs_request_finish(iter); |
| if (ret) |
| return ERR_PTR(ret); |
| |
| user_wr = kmalloc(wqe_size, GFP_KERNEL); |
| if (!user_wr) |
| return ERR_PTR(-ENOMEM); |
| |
| sg_ind = 0; |
| last = NULL; |
| for (i = 0; i < wr_count; ++i) { |
| if (copy_from_user(user_wr, wqes + i * wqe_size, |
| wqe_size)) { |
| ret = -EFAULT; |
| goto err; |
| } |
| |
| if (user_wr->num_sge + sg_ind > sge_count) { |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| if (user_wr->num_sge >= |
| (U32_MAX - ALIGN(sizeof(*next), sizeof(struct ib_sge))) / |
| sizeof(struct ib_sge)) { |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| next = kmalloc(ALIGN(sizeof(*next), sizeof(struct ib_sge)) + |
| user_wr->num_sge * sizeof(struct ib_sge), |
| GFP_KERNEL); |
| if (!next) { |
| ret = -ENOMEM; |
| goto err; |
| } |
| |
| if (!last) |
| wr = next; |
| else |
| last->next = next; |
| last = next; |
| |
| next->next = NULL; |
| next->wr_id = user_wr->wr_id; |
| next->num_sge = user_wr->num_sge; |
| |
| if (next->num_sge) { |
| next->sg_list = (void *)next + |
| ALIGN(sizeof(*next), sizeof(struct ib_sge)); |
| if (copy_from_user(next->sg_list, sgls + sg_ind, |
| next->num_sge * |
| sizeof(struct ib_sge))) { |
| ret = -EFAULT; |
| goto err; |
| } |
| sg_ind += next->num_sge; |
| } else |
| next->sg_list = NULL; |
| } |
| |
| kfree(user_wr); |
| return wr; |
| |
| err: |
| kfree(user_wr); |
| |
| while (wr) { |
| next = wr->next; |
| kfree(wr); |
| wr = next; |
| } |
| |
| return ERR_PTR(ret); |
| } |
| |
| static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_post_recv cmd; |
| struct ib_uverbs_post_recv_resp resp; |
| struct ib_recv_wr *wr, *next; |
| const struct ib_recv_wr *bad_wr; |
| struct ib_qp *qp; |
| int ret, ret2; |
| struct uverbs_req_iter iter; |
| |
| ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size, |
| cmd.sge_count); |
| if (IS_ERR(wr)) |
| return PTR_ERR(wr); |
| |
| qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); |
| if (!qp) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| resp.bad_wr = 0; |
| ret = qp->device->ops.post_recv(qp->real_qp, wr, &bad_wr); |
| |
| rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| if (ret) { |
| for (next = wr; next; next = next->next) { |
| ++resp.bad_wr; |
| if (next == bad_wr) |
| break; |
| } |
| } |
| |
| ret2 = uverbs_response(attrs, &resp, sizeof(resp)); |
| if (ret2) |
| ret = ret2; |
| out: |
| while (wr) { |
| next = wr->next; |
| kfree(wr); |
| wr = next; |
| } |
| |
| return ret; |
| } |
| |
| static int ib_uverbs_post_srq_recv(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_post_srq_recv cmd; |
| struct ib_uverbs_post_srq_recv_resp resp; |
| struct ib_recv_wr *wr, *next; |
| const struct ib_recv_wr *bad_wr; |
| struct ib_srq *srq; |
| int ret, ret2; |
| struct uverbs_req_iter iter; |
| |
| ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size, |
| cmd.sge_count); |
| if (IS_ERR(wr)) |
| return PTR_ERR(wr); |
| |
| srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs); |
| if (!srq) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| resp.bad_wr = 0; |
| ret = srq->device->ops.post_srq_recv(srq, wr, &bad_wr); |
| |
| rdma_lookup_put_uobject(&srq->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| |
| if (ret) |
| for (next = wr; next; next = next->next) { |
| ++resp.bad_wr; |
| if (next == bad_wr) |
| break; |
| } |
| |
| ret2 = uverbs_response(attrs, &resp, sizeof(resp)); |
| if (ret2) |
| ret = ret2; |
| |
| out: |
| while (wr) { |
| next = wr->next; |
| kfree(wr); |
| wr = next; |
| } |
| |
| return ret; |
| } |
| |
| static int ib_uverbs_create_ah(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_create_ah cmd; |
| struct ib_uverbs_create_ah_resp resp; |
| struct ib_uobject *uobj; |
| struct ib_pd *pd; |
| struct ib_ah *ah; |
| struct rdma_ah_attr attr = {}; |
| int ret; |
| struct ib_device *ib_dev; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| uobj = uobj_alloc(UVERBS_OBJECT_AH, attrs, &ib_dev); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num)) { |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); |
| if (!pd) { |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num); |
| rdma_ah_set_make_grd(&attr, false); |
| rdma_ah_set_dlid(&attr, cmd.attr.dlid); |
| rdma_ah_set_sl(&attr, cmd.attr.sl); |
| rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits); |
| rdma_ah_set_static_rate(&attr, cmd.attr.static_rate); |
| rdma_ah_set_port_num(&attr, cmd.attr.port_num); |
| |
| if (cmd.attr.is_global) { |
| rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label, |
| cmd.attr.grh.sgid_index, |
| cmd.attr.grh.hop_limit, |
| cmd.attr.grh.traffic_class); |
| rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid); |
| } else { |
| rdma_ah_set_ah_flags(&attr, 0); |
| } |
| |
| ah = rdma_create_user_ah(pd, &attr, &attrs->driver_udata); |
| if (IS_ERR(ah)) { |
| ret = PTR_ERR(ah); |
| goto err_put; |
| } |
| |
| ah->uobject = uobj; |
| uobj->user_handle = cmd.user_handle; |
| uobj->object = ah; |
| uobj_put_obj_read(pd); |
| uobj_finalize_uobj_create(uobj, attrs); |
| |
| resp.ah_handle = uobj->id; |
| return uverbs_response(attrs, &resp, sizeof(resp)); |
| |
| err_put: |
| uobj_put_obj_read(pd); |
| err: |
| uobj_alloc_abort(uobj, attrs); |
| return ret; |
| } |
| |
| static int ib_uverbs_destroy_ah(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_destroy_ah cmd; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| return uobj_perform_destroy(UVERBS_OBJECT_AH, cmd.ah_handle, attrs); |
| } |
| |
| static int ib_uverbs_attach_mcast(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_attach_mcast cmd; |
| struct ib_qp *qp; |
| struct ib_uqp_object *obj; |
| struct ib_uverbs_mcast_entry *mcast; |
| int ret; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); |
| if (!qp) |
| return -EINVAL; |
| |
| obj = qp->uobject; |
| |
| mutex_lock(&obj->mcast_lock); |
| list_for_each_entry(mcast, &obj->mcast_list, list) |
| if (cmd.mlid == mcast->lid && |
| !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { |
| ret = 0; |
| goto out_put; |
| } |
| |
| mcast = kmalloc(sizeof *mcast, GFP_KERNEL); |
| if (!mcast) { |
| ret = -ENOMEM; |
| goto out_put; |
| } |
| |
| mcast->lid = cmd.mlid; |
| memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); |
| |
| ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); |
| if (!ret) |
| list_add_tail(&mcast->list, &obj->mcast_list); |
| else |
| kfree(mcast); |
| |
| out_put: |
| mutex_unlock(&obj->mcast_lock); |
| rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| |
| return ret; |
| } |
| |
| static int ib_uverbs_detach_mcast(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_detach_mcast cmd; |
| struct ib_uqp_object *obj; |
| struct ib_qp *qp; |
| struct ib_uverbs_mcast_entry *mcast; |
| int ret; |
| bool found = false; |
| |
| ret = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs); |
| if (!qp) |
| return -EINVAL; |
| |
| obj = qp->uobject; |
| mutex_lock(&obj->mcast_lock); |
| |
| list_for_each_entry(mcast, &obj->mcast_list, list) |
| if (cmd.mlid == mcast->lid && |
| !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { |
| list_del(&mcast->list); |
| kfree(mcast); |
| found = true; |
| break; |
| } |
| |
| if (!found) { |
| ret = -EINVAL; |
| goto out_put; |
| } |
| |
| ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid); |
| |
| out_put: |
| mutex_unlock(&obj->mcast_lock); |
| rdma_lookup_put_uobject(&qp->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| return ret; |
| } |
| |
| struct ib_uflow_resources *flow_resources_alloc(size_t num_specs) |
| { |
| struct ib_uflow_resources *resources; |
| |
| resources = kzalloc(sizeof(*resources), GFP_KERNEL); |
| |
| if (!resources) |
| return NULL; |
| |
| if (!num_specs) |
| goto out; |
| |
| resources->counters = |
| kcalloc(num_specs, sizeof(*resources->counters), GFP_KERNEL); |
| resources->collection = |
| kcalloc(num_specs, sizeof(*resources->collection), GFP_KERNEL); |
| |
| if (!resources->counters || !resources->collection) |
| goto err; |
| |
| out: |
| resources->max = num_specs; |
| return resources; |
| |
| err: |
| kfree(resources->counters); |
| kfree(resources); |
| |
| return NULL; |
| } |
| EXPORT_SYMBOL(flow_resources_alloc); |
| |
| void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res) |
| { |
| unsigned int i; |
| |
| if (!uflow_res) |
| return; |
| |
| for (i = 0; i < uflow_res->collection_num; i++) |
| atomic_dec(&uflow_res->collection[i]->usecnt); |
| |
| for (i = 0; i < uflow_res->counters_num; i++) |
| atomic_dec(&uflow_res->counters[i]->usecnt); |
| |
| kfree(uflow_res->collection); |
| kfree(uflow_res->counters); |
| kfree(uflow_res); |
| } |
| EXPORT_SYMBOL(ib_uverbs_flow_resources_free); |
| |
| void flow_resources_add(struct ib_uflow_resources *uflow_res, |
| enum ib_flow_spec_type type, |
| void *ibobj) |
| { |
| WARN_ON(uflow_res->num >= uflow_res->max); |
| |
| switch (type) { |
| case IB_FLOW_SPEC_ACTION_HANDLE: |
| atomic_inc(&((struct ib_flow_action *)ibobj)->usecnt); |
| uflow_res->collection[uflow_res->collection_num++] = |
| (struct ib_flow_action *)ibobj; |
| break; |
| case IB_FLOW_SPEC_ACTION_COUNT: |
| atomic_inc(&((struct ib_counters *)ibobj)->usecnt); |
| uflow_res->counters[uflow_res->counters_num++] = |
| (struct ib_counters *)ibobj; |
| break; |
| default: |
| WARN_ON(1); |
| } |
| |
| uflow_res->num++; |
| } |
| EXPORT_SYMBOL(flow_resources_add); |
| |
| static int kern_spec_to_ib_spec_action(struct uverbs_attr_bundle *attrs, |
| struct ib_uverbs_flow_spec *kern_spec, |
| union ib_flow_spec *ib_spec, |
| struct ib_uflow_resources *uflow_res) |
| { |
| ib_spec->type = kern_spec->type; |
| switch (ib_spec->type) { |
| case IB_FLOW_SPEC_ACTION_TAG: |
| if (kern_spec->flow_tag.size != |
| sizeof(struct ib_uverbs_flow_spec_action_tag)) |
| return -EINVAL; |
| |
| ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag); |
| ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id; |
| break; |
| case IB_FLOW_SPEC_ACTION_DROP: |
| if (kern_spec->drop.size != |
| sizeof(struct ib_uverbs_flow_spec_action_drop)) |
| return -EINVAL; |
| |
| ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop); |
| break; |
| case IB_FLOW_SPEC_ACTION_HANDLE: |
| if (kern_spec->action.size != |
| sizeof(struct ib_uverbs_flow_spec_action_handle)) |
| return -EOPNOTSUPP; |
| ib_spec->action.act = uobj_get_obj_read(flow_action, |
| UVERBS_OBJECT_FLOW_ACTION, |
| kern_spec->action.handle, |
| attrs); |
| if (!ib_spec->action.act) |
| return -EINVAL; |
| ib_spec->action.size = |
| sizeof(struct ib_flow_spec_action_handle); |
| flow_resources_add(uflow_res, |
| IB_FLOW_SPEC_ACTION_HANDLE, |
| ib_spec->action.act); |
| uobj_put_obj_read(ib_spec->action.act); |
| break; |
| case IB_FLOW_SPEC_ACTION_COUNT: |
| if (kern_spec->flow_count.size != |
| sizeof(struct ib_uverbs_flow_spec_action_count)) |
| return -EINVAL; |
| ib_spec->flow_count.counters = |
| uobj_get_obj_read(counters, |
| UVERBS_OBJECT_COUNTERS, |
| kern_spec->flow_count.handle, |
| attrs); |
| if (!ib_spec->flow_count.counters) |
| return -EINVAL; |
| ib_spec->flow_count.size = |
| sizeof(struct ib_flow_spec_action_count); |
| flow_resources_add(uflow_res, |
| IB_FLOW_SPEC_ACTION_COUNT, |
| ib_spec->flow_count.counters); |
| uobj_put_obj_read(ib_spec->flow_count.counters); |
| break; |
| default: |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| static ssize_t spec_filter_size(const void *kern_spec_filter, u16 kern_filter_size, |
| u16 ib_real_filter_sz) |
| { |
| /* |
| * User space filter structures must be 64 bit aligned, otherwise this |
| * may pass, but we won't handle additional new attributes. |
| */ |
| |
| if (kern_filter_size > ib_real_filter_sz) { |
| if (memchr_inv(kern_spec_filter + |
| ib_real_filter_sz, 0, |
| kern_filter_size - ib_real_filter_sz)) |
| return -EINVAL; |
| return ib_real_filter_sz; |
| } |
| return kern_filter_size; |
| } |
| |
| int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type, |
| const void *kern_spec_mask, |
| const void *kern_spec_val, |
| size_t kern_filter_sz, |
| union ib_flow_spec *ib_spec) |
| { |
| ssize_t actual_filter_sz; |
| ssize_t ib_filter_sz; |
| |
| /* User flow spec size must be aligned to 4 bytes */ |
| if (kern_filter_sz != ALIGN(kern_filter_sz, 4)) |
| return -EINVAL; |
| |
| ib_spec->type = type; |
| |
| if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL)) |
| return -EINVAL; |
| |
| switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) { |
| case IB_FLOW_SPEC_ETH: |
| ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz); |
| actual_filter_sz = spec_filter_size(kern_spec_mask, |
| kern_filter_sz, |
| ib_filter_sz); |
| if (actual_filter_sz <= 0) |
| return -EINVAL; |
| ib_spec->size = sizeof(struct ib_flow_spec_eth); |
| memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz); |
| memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz); |
| break; |
| case IB_FLOW_SPEC_IPV4: |
| ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz); |
| actual_filter_sz = spec_filter_size(kern_spec_mask, |
| kern_filter_sz, |
| ib_filter_sz); |
| if (actual_filter_sz <= 0) |
| return -EINVAL; |
| ib_spec->size = sizeof(struct ib_flow_spec_ipv4); |
| memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz); |
| memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz); |
| break; |
| case IB_FLOW_SPEC_IPV6: |
| ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz); |
| actual_filter_sz = spec_filter_size(kern_spec_mask, |
| kern_filter_sz, |
| ib_filter_sz); |
| if (actual_filter_sz <= 0) |
| return -EINVAL; |
| ib_spec->size = sizeof(struct ib_flow_spec_ipv6); |
| memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz); |
| memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz); |
| |
| if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) || |
| (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20)) |
| return -EINVAL; |
| break; |
| case IB_FLOW_SPEC_TCP: |
| case IB_FLOW_SPEC_UDP: |
| ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz); |
| actual_filter_sz = spec_filter_size(kern_spec_mask, |
| kern_filter_sz, |
| ib_filter_sz); |
| if (actual_filter_sz <= 0) |
| return -EINVAL; |
| ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp); |
| memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz); |
| memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz); |
| break; |
| case IB_FLOW_SPEC_VXLAN_TUNNEL: |
| ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz); |
| actual_filter_sz = spec_filter_size(kern_spec_mask, |
| kern_filter_sz, |
| ib_filter_sz); |
| if (actual_filter_sz <= 0) |
| return -EINVAL; |
| ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel); |
| memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz); |
| memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz); |
| |
| if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) || |
| (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24)) |
| return -EINVAL; |
| break; |
| case IB_FLOW_SPEC_ESP: |
| ib_filter_sz = offsetof(struct ib_flow_esp_filter, real_sz); |
| actual_filter_sz = spec_filter_size(kern_spec_mask, |
| kern_filter_sz, |
| ib_filter_sz); |
| if (actual_filter_sz <= 0) |
| return -EINVAL; |
| ib_spec->esp.size = sizeof(struct ib_flow_spec_esp); |
| memcpy(&ib_spec->esp.val, kern_spec_val, actual_filter_sz); |
| memcpy(&ib_spec->esp.mask, kern_spec_mask, actual_filter_sz); |
| break; |
| case IB_FLOW_SPEC_GRE: |
| ib_filter_sz = offsetof(struct ib_flow_gre_filter, real_sz); |
| actual_filter_sz = spec_filter_size(kern_spec_mask, |
| kern_filter_sz, |
| ib_filter_sz); |
| if (actual_filter_sz <= 0) |
| return -EINVAL; |
| ib_spec->gre.size = sizeof(struct ib_flow_spec_gre); |
| memcpy(&ib_spec->gre.val, kern_spec_val, actual_filter_sz); |
| memcpy(&ib_spec->gre.mask, kern_spec_mask, actual_filter_sz); |
| break; |
| case IB_FLOW_SPEC_MPLS: |
| ib_filter_sz = offsetof(struct ib_flow_mpls_filter, real_sz); |
| actual_filter_sz = spec_filter_size(kern_spec_mask, |
| kern_filter_sz, |
| ib_filter_sz); |
| if (actual_filter_sz <= 0) |
| return -EINVAL; |
| ib_spec->mpls.size = sizeof(struct ib_flow_spec_mpls); |
| memcpy(&ib_spec->mpls.val, kern_spec_val, actual_filter_sz); |
| memcpy(&ib_spec->mpls.mask, kern_spec_mask, actual_filter_sz); |
| break; |
| default: |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec, |
| union ib_flow_spec *ib_spec) |
| { |
| size_t kern_filter_sz; |
| void *kern_spec_mask; |
| void *kern_spec_val; |
| |
| if (check_sub_overflow((size_t)kern_spec->hdr.size, |
| sizeof(struct ib_uverbs_flow_spec_hdr), |
| &kern_filter_sz)) |
| return -EINVAL; |
| |
| kern_filter_sz /= 2; |
| |
| kern_spec_val = (void *)kern_spec + |
| sizeof(struct ib_uverbs_flow_spec_hdr); |
| kern_spec_mask = kern_spec_val + kern_filter_sz; |
| |
| return ib_uverbs_kern_spec_to_ib_spec_filter(kern_spec->type, |
| kern_spec_mask, |
| kern_spec_val, |
| kern_filter_sz, ib_spec); |
| } |
| |
| static int kern_spec_to_ib_spec(struct uverbs_attr_bundle *attrs, |
| struct ib_uverbs_flow_spec *kern_spec, |
| union ib_flow_spec *ib_spec, |
| struct ib_uflow_resources *uflow_res) |
| { |
| if (kern_spec->reserved) |
| return -EINVAL; |
| |
| if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG) |
| return kern_spec_to_ib_spec_action(attrs, kern_spec, ib_spec, |
| uflow_res); |
| else |
| return kern_spec_to_ib_spec_filter(kern_spec, ib_spec); |
| } |
| |
| static int ib_uverbs_ex_create_wq(struct uverbs_attr_bundle *attrs) |
| { |
| struct ib_uverbs_ex_create_wq cmd; |
| struct ib_uverbs_ex_create_wq_resp resp = {}; |
| struct ib_uwq_object *obj; |
| int err = 0; |
| struct ib_cq *cq; |
| struct ib_pd *pd; |
| struct ib_wq *wq; |
| struct ib_wq_init_attr wq_init_attr = {}; |
| struct ib_device *ib_dev; |
| |
| err = uverbs_request(attrs, &cmd, sizeof(cmd)); |
| if (err) |
| return err; |
| |
| if (cmd.comp_mask) |
| return -EOPNOTSUPP; |
| |
| obj = (struct ib_uwq_object *)uobj_alloc(UVERBS_OBJECT_WQ, attrs, |
| &ib_dev); |
| if (IS_ERR(obj)) |
| return PTR_ERR(obj); |
| |
| pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); |
| if (!pd) { |
| err = -EINVAL; |
| goto err_uobj; |
| } |
| |
| cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs); |
| if (!cq) { |
| err = -EINVAL; |
| goto err_put_pd; |
| } |
| |
| wq_init_attr.cq = cq; |
| wq_init_attr.max_sge = cmd.max_sge; |
| wq_init_attr.max_wr = cmd.max_wr; |
| wq_init_attr.wq_type = cmd.wq_type; |
| wq_init_attr.event_handler = ib_uverbs_wq_event_handler; |
| wq_init_attr.create_flags = cmd.create_flags; |
| INIT_LIST_HEAD(&obj->uevent.event_list); |
| obj->uevent.uobject.user_handle = cmd.user_handle; |
| |
| wq = pd->device->ops.create_wq(pd, &wq_init_attr, &attrs->driver_udata); |
| if (IS_ERR(wq)) { |
| err = PTR_ERR(wq); |
| goto err_put_cq; |
| } |
| |
| wq->uobject = obj; |
| obj->uevent.uobject.object = wq; |
| wq->wq_type = wq_init_attr.wq_type; |
| wq->cq = cq; |
| wq->pd = pd; |
| wq->device = pd->device; |
| atomic_set(&wq->usecnt, 0); |
| atomic_inc(&pd->usecnt); |
| atomic_inc(&cq->usecnt); |
| obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file); |
| if (obj->uevent.event_file) |
| uverbs_uobject_get(&obj->uevent.event_file->uobj); |
| |
| uobj_put_obj_read(pd); |
| rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| uobj_finalize_uobj_create(&obj->uevent.uobject, attrs); |
| |
| resp.wq_handle = obj->uevent.uobject.id; |
| resp.max_sge = wq_init_attr.max_sge; |
| resp.max_wr = wq_init_attr.max_wr; |
| resp.wqn = wq->wq_num; |
| resp.response_length = uverbs_response_length(attrs, sizeof(resp)); |
| return uverbs_response(attrs, &resp, sizeof(resp)); |
| |
| err_put_cq: |
| rdma_lookup_put_uobject(&cq->uobject->uevent.uobject, |
| UVERBS_LOOKUP_READ); |
| err_put_pd: |
| uobj_put_obj_read(pd); |
|