| /* |
| * Copyright (c) 2005 Topspin Communications. All rights reserved. |
| * Copyright (c) 2005, 2006 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. |
| * |
| * $Id: uverbs_cmd.c 2708 2005-06-24 17:27:21Z roland $ |
| */ |
| |
| #include <linux/file.h> |
| #include <linux/fs.h> |
| |
| #include <asm/uaccess.h> |
| |
| #include "uverbs.h" |
| |
| #define INIT_UDATA(udata, ibuf, obuf, ilen, olen) \ |
| do { \ |
| (udata)->inbuf = (void __user *) (ibuf); \ |
| (udata)->outbuf = (void __user *) (obuf); \ |
| (udata)->inlen = (ilen); \ |
| (udata)->outlen = (olen); \ |
| } while (0) |
| |
| 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_device *ibdev = file->device->ib_dev; |
| struct ib_ucontext *ucontext; |
| struct file *filp; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| mutex_lock(&file->mutex); |
| |
| if (file->ucontext) { |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| INIT_UDATA(&udata, buf + sizeof cmd, |
| (unsigned long) cmd.response + sizeof resp, |
| in_len - sizeof cmd, out_len - sizeof resp); |
| |
| ucontext = ibdev->alloc_ucontext(ibdev, &udata); |
| if (IS_ERR(ucontext)) |
| return PTR_ERR(file->ucontext); |
| |
| ucontext->device = ibdev; |
| INIT_LIST_HEAD(&ucontext->pd_list); |
| INIT_LIST_HEAD(&ucontext->mr_list); |
| INIT_LIST_HEAD(&ucontext->mw_list); |
| INIT_LIST_HEAD(&ucontext->cq_list); |
| INIT_LIST_HEAD(&ucontext->qp_list); |
| INIT_LIST_HEAD(&ucontext->srq_list); |
| INIT_LIST_HEAD(&ucontext->ah_list); |
| |
| resp.num_comp_vectors = file->device->num_comp_vectors; |
| |
| filp = ib_uverbs_alloc_event_file(file, 1, &resp.async_fd); |
| if (IS_ERR(filp)) { |
| ret = PTR_ERR(filp); |
| goto err_free; |
| } |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_file; |
| } |
| |
| file->async_file = filp->private_data; |
| |
| INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev, |
| ib_uverbs_event_handler); |
| ret = ib_register_event_handler(&file->event_handler); |
| if (ret) |
| goto err_file; |
| |
| kref_get(&file->async_file->ref); |
| kref_get(&file->ref); |
| file->ucontext = ucontext; |
| |
| fd_install(resp.async_fd, filp); |
| |
| mutex_unlock(&file->mutex); |
| |
| return in_len; |
| |
| err_file: |
| put_unused_fd(resp.async_fd); |
| fput(filp); |
| |
| err_free: |
| ibdev->dealloc_ucontext(ucontext); |
| |
| err: |
| mutex_unlock(&file->mutex); |
| return ret; |
| } |
| |
| 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_device_attr attr; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| ret = ib_query_device(file->device->ib_dev, &attr); |
| if (ret) |
| return ret; |
| |
| memset(&resp, 0, sizeof resp); |
| |
| resp.fw_ver = attr.fw_ver; |
| resp.node_guid = file->device->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 = attr.device_cap_flags; |
| resp.max_sge = attr.max_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 = file->device->ib_dev->phys_port_cnt; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| return -EFAULT; |
| |
| return in_len; |
| } |
| |
| 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; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| ret = ib_query_port(file->device->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 = attr.port_cap_flags; |
| 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; |
| resp.lid = attr.lid; |
| resp.sm_lid = 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; |
| |
| if (copy_to_user((void __user *) (unsigned long) 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; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| INIT_UDATA(&udata, buf + sizeof cmd, |
| (unsigned long) cmd.response + sizeof resp, |
| in_len - sizeof cmd, out_len - sizeof resp); |
| |
| uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
| if (!uobj) |
| return -ENOMEM; |
| |
| uobj->context = file->ucontext; |
| |
| pd = file->device->ib_dev->alloc_pd(file->device->ib_dev, |
| file->ucontext, &udata); |
| if (IS_ERR(pd)) { |
| ret = PTR_ERR(pd); |
| goto err; |
| } |
| |
| pd->device = file->device->ib_dev; |
| pd->uobject = uobj; |
| atomic_set(&pd->usecnt, 0); |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| retry: |
| if (!idr_pre_get(&ib_uverbs_pd_idr, GFP_KERNEL)) { |
| ret = -ENOMEM; |
| goto err_up; |
| } |
| |
| ret = idr_get_new(&ib_uverbs_pd_idr, pd, &uobj->id); |
| |
| if (ret == -EAGAIN) |
| goto retry; |
| if (ret) |
| goto err_up; |
| |
| memset(&resp, 0, sizeof resp); |
| resp.pd_handle = uobj->id; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_idr; |
| } |
| |
| mutex_lock(&file->mutex); |
| list_add_tail(&uobj->list, &file->ucontext->pd_list); |
| mutex_unlock(&file->mutex); |
| |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| return in_len; |
| |
| err_idr: |
| idr_remove(&ib_uverbs_pd_idr, uobj->id); |
| |
| err_up: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| ib_dealloc_pd(pd); |
| |
| err: |
| kfree(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; |
| struct ib_pd *pd; |
| struct ib_uobject *uobj; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); |
| if (!pd || pd->uobject->context != file->ucontext) |
| goto out; |
| |
| uobj = pd->uobject; |
| |
| ret = ib_dealloc_pd(pd); |
| if (ret) |
| goto out; |
| |
| idr_remove(&ib_uverbs_pd_idr, cmd.pd_handle); |
| |
| mutex_lock(&file->mutex); |
| list_del(&uobj->list); |
| mutex_unlock(&file->mutex); |
| |
| kfree(uobj); |
| |
| out: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| return ret ? ret : in_len; |
| } |
| |
| 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_umem_object *obj; |
| struct ib_pd *pd; |
| struct ib_mr *mr; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| INIT_UDATA(&udata, buf + sizeof cmd, |
| (unsigned long) cmd.response + sizeof resp, |
| in_len - sizeof cmd, out_len - sizeof resp); |
| |
| if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) |
| return -EINVAL; |
| |
| /* |
| * Local write permission is required if remote write or |
| * remote atomic permission is also requested. |
| */ |
| if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) && |
| !(cmd.access_flags & IB_ACCESS_LOCAL_WRITE)) |
| return -EINVAL; |
| |
| obj = kmalloc(sizeof *obj, GFP_KERNEL); |
| if (!obj) |
| return -ENOMEM; |
| |
| obj->uobject.context = file->ucontext; |
| |
| /* |
| * We ask for writable memory if any access flags other than |
| * "remote read" are set. "Local write" and "remote write" |
| * obviously require write access. "Remote atomic" can do |
| * things like fetch and add, which will modify memory, and |
| * "MW bind" can change permissions by binding a window. |
| */ |
| ret = ib_umem_get(file->device->ib_dev, &obj->umem, |
| (void *) (unsigned long) cmd.start, cmd.length, |
| !!(cmd.access_flags & ~IB_ACCESS_REMOTE_READ)); |
| if (ret) |
| goto err_free; |
| |
| obj->umem.virt_base = cmd.hca_va; |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); |
| if (!pd || pd->uobject->context != file->ucontext) { |
| ret = -EINVAL; |
| goto err_up; |
| } |
| |
| if (!pd->device->reg_user_mr) { |
| ret = -ENOSYS; |
| goto err_up; |
| } |
| |
| mr = pd->device->reg_user_mr(pd, &obj->umem, cmd.access_flags, &udata); |
| if (IS_ERR(mr)) { |
| ret = PTR_ERR(mr); |
| goto err_up; |
| } |
| |
| mr->device = pd->device; |
| mr->pd = pd; |
| mr->uobject = &obj->uobject; |
| atomic_inc(&pd->usecnt); |
| atomic_set(&mr->usecnt, 0); |
| |
| memset(&resp, 0, sizeof resp); |
| resp.lkey = mr->lkey; |
| resp.rkey = mr->rkey; |
| |
| retry: |
| if (!idr_pre_get(&ib_uverbs_mr_idr, GFP_KERNEL)) { |
| ret = -ENOMEM; |
| goto err_unreg; |
| } |
| |
| ret = idr_get_new(&ib_uverbs_mr_idr, mr, &obj->uobject.id); |
| |
| if (ret == -EAGAIN) |
| goto retry; |
| if (ret) |
| goto err_unreg; |
| |
| resp.mr_handle = obj->uobject.id; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_idr; |
| } |
| |
| mutex_lock(&file->mutex); |
| list_add_tail(&obj->uobject.list, &file->ucontext->mr_list); |
| mutex_unlock(&file->mutex); |
| |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| return in_len; |
| |
| err_idr: |
| idr_remove(&ib_uverbs_mr_idr, obj->uobject.id); |
| |
| err_unreg: |
| ib_dereg_mr(mr); |
| atomic_dec(&pd->usecnt); |
| |
| err_up: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| ib_umem_release(file->device->ib_dev, &obj->umem); |
| |
| err_free: |
| kfree(obj); |
| 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; |
| struct ib_mr *mr; |
| struct ib_umem_object *memobj; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| mr = idr_find(&ib_uverbs_mr_idr, cmd.mr_handle); |
| if (!mr || mr->uobject->context != file->ucontext) |
| goto out; |
| |
| memobj = container_of(mr->uobject, struct ib_umem_object, uobject); |
| |
| ret = ib_dereg_mr(mr); |
| if (ret) |
| goto out; |
| |
| idr_remove(&ib_uverbs_mr_idr, cmd.mr_handle); |
| |
| mutex_lock(&file->mutex); |
| list_del(&memobj->uobject.list); |
| mutex_unlock(&file->mutex); |
| |
| ib_umem_release(file->device->ib_dev, &memobj->umem); |
| kfree(memobj); |
| |
| out: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| return ret ? ret : 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 file *filp; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| filp = ib_uverbs_alloc_event_file(file, 0, &resp.fd); |
| if (IS_ERR(filp)) |
| return PTR_ERR(filp); |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| put_unused_fd(resp.fd); |
| fput(filp); |
| return -EFAULT; |
| } |
| |
| fd_install(resp.fd, filp); |
| return in_len; |
| } |
| |
| 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_create_cq_resp resp; |
| struct ib_udata udata; |
| struct ib_ucq_object *uobj; |
| struct ib_uverbs_event_file *ev_file = NULL; |
| struct ib_cq *cq; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| INIT_UDATA(&udata, buf + sizeof cmd, |
| (unsigned long) cmd.response + sizeof resp, |
| in_len - sizeof cmd, out_len - sizeof resp); |
| |
| if (cmd.comp_vector >= file->device->num_comp_vectors) |
| return -EINVAL; |
| |
| uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
| if (!uobj) |
| return -ENOMEM; |
| |
| if (cmd.comp_channel >= 0) { |
| ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel); |
| if (!ev_file) { |
| ret = -EINVAL; |
| goto err; |
| } |
| } |
| |
| uobj->uobject.user_handle = cmd.user_handle; |
| uobj->uobject.context = file->ucontext; |
| uobj->uverbs_file = file; |
| uobj->comp_events_reported = 0; |
| uobj->async_events_reported = 0; |
| INIT_LIST_HEAD(&uobj->comp_list); |
| INIT_LIST_HEAD(&uobj->async_list); |
| |
| cq = file->device->ib_dev->create_cq(file->device->ib_dev, cmd.cqe, |
| file->ucontext, &udata); |
| if (IS_ERR(cq)) { |
| ret = PTR_ERR(cq); |
| goto err; |
| } |
| |
| cq->device = file->device->ib_dev; |
| cq->uobject = &uobj->uobject; |
| cq->comp_handler = ib_uverbs_comp_handler; |
| cq->event_handler = ib_uverbs_cq_event_handler; |
| cq->cq_context = ev_file; |
| atomic_set(&cq->usecnt, 0); |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| retry: |
| if (!idr_pre_get(&ib_uverbs_cq_idr, GFP_KERNEL)) { |
| ret = -ENOMEM; |
| goto err_up; |
| } |
| |
| ret = idr_get_new(&ib_uverbs_cq_idr, cq, &uobj->uobject.id); |
| |
| if (ret == -EAGAIN) |
| goto retry; |
| if (ret) |
| goto err_up; |
| |
| memset(&resp, 0, sizeof resp); |
| resp.cq_handle = uobj->uobject.id; |
| resp.cqe = cq->cqe; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_idr; |
| } |
| |
| mutex_lock(&file->mutex); |
| list_add_tail(&uobj->uobject.list, &file->ucontext->cq_list); |
| mutex_unlock(&file->mutex); |
| |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| return in_len; |
| |
| err_idr: |
| idr_remove(&ib_uverbs_cq_idr, uobj->uobject.id); |
| |
| err_up: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| ib_destroy_cq(cq); |
| |
| err: |
| if (ev_file) |
| ib_uverbs_release_ucq(file, ev_file, uobj); |
| kfree(uobj); |
| return ret; |
| } |
| |
| 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; |
| |
| INIT_UDATA(&udata, buf + sizeof cmd, |
| (unsigned long) cmd.response + sizeof resp, |
| in_len - sizeof cmd, out_len - sizeof resp); |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); |
| if (!cq || cq->uobject->context != file->ucontext || !cq->device->resize_cq) |
| goto out; |
| |
| ret = cq->device->resize_cq(cq, cmd.cqe, &udata); |
| if (ret) |
| goto out; |
| |
| memset(&resp, 0, sizeof resp); |
| resp.cqe = cq->cqe; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| ret = -EFAULT; |
| |
| out: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| return ret ? ret : in_len; |
| } |
| |
| 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; |
| struct ib_cq *cq; |
| struct ib_wc *wc; |
| int ret = 0; |
| int i; |
| int rsize; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| wc = kmalloc(cmd.ne * sizeof *wc, GFP_KERNEL); |
| if (!wc) |
| return -ENOMEM; |
| |
| rsize = sizeof *resp + cmd.ne * sizeof(struct ib_uverbs_wc); |
| resp = kmalloc(rsize, GFP_KERNEL); |
| if (!resp) { |
| ret = -ENOMEM; |
| goto out_wc; |
| } |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); |
| if (!cq || cq->uobject->context != file->ucontext) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| resp->count = ib_poll_cq(cq, cmd.ne, wc); |
| |
| for (i = 0; i < resp->count; i++) { |
| resp->wc[i].wr_id = wc[i].wr_id; |
| resp->wc[i].status = wc[i].status; |
| resp->wc[i].opcode = wc[i].opcode; |
| resp->wc[i].vendor_err = wc[i].vendor_err; |
| resp->wc[i].byte_len = wc[i].byte_len; |
| resp->wc[i].imm_data = (__u32 __force) wc[i].imm_data; |
| resp->wc[i].qp_num = wc[i].qp_num; |
| resp->wc[i].src_qp = wc[i].src_qp; |
| resp->wc[i].wc_flags = wc[i].wc_flags; |
| resp->wc[i].pkey_index = wc[i].pkey_index; |
| resp->wc[i].slid = wc[i].slid; |
| resp->wc[i].sl = wc[i].sl; |
| resp->wc[i].dlid_path_bits = wc[i].dlid_path_bits; |
| resp->wc[i].port_num = wc[i].port_num; |
| } |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, resp, rsize)) |
| ret = -EFAULT; |
| |
| out: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| kfree(resp); |
| |
| out_wc: |
| kfree(wc); |
| return ret ? ret : in_len; |
| } |
| |
| 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; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); |
| if (cq && cq->uobject->context == file->ucontext) { |
| ib_req_notify_cq(cq, cmd.solicited_only ? |
| IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); |
| ret = in_len; |
| } |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| return ret; |
| } |
| |
| 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_cq *cq; |
| struct ib_ucq_object *uobj; |
| struct ib_uverbs_event_file *ev_file; |
| u64 user_handle; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| memset(&resp, 0, sizeof resp); |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); |
| if (!cq || cq->uobject->context != file->ucontext) |
| goto out; |
| |
| user_handle = cq->uobject->user_handle; |
| uobj = container_of(cq->uobject, struct ib_ucq_object, uobject); |
| ev_file = cq->cq_context; |
| |
| ret = ib_destroy_cq(cq); |
| if (ret) |
| goto out; |
| |
| idr_remove(&ib_uverbs_cq_idr, cmd.cq_handle); |
| |
| mutex_lock(&file->mutex); |
| list_del(&uobj->uobject.list); |
| mutex_unlock(&file->mutex); |
| |
| ib_uverbs_release_ucq(file, ev_file, uobj); |
| |
| resp.comp_events_reported = uobj->comp_events_reported; |
| resp.async_events_reported = uobj->async_events_reported; |
| |
| kfree(uobj); |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| ret = -EFAULT; |
| |
| out: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| return ret ? ret : in_len; |
| } |
| |
| 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_create_qp_resp resp; |
| struct ib_udata udata; |
| struct ib_uqp_object *uobj; |
| struct ib_pd *pd; |
| struct ib_cq *scq, *rcq; |
| struct ib_srq *srq; |
| struct ib_qp *qp; |
| struct ib_qp_init_attr attr; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| INIT_UDATA(&udata, buf + sizeof cmd, |
| (unsigned long) cmd.response + sizeof resp, |
| in_len - sizeof cmd, out_len - sizeof resp); |
| |
| uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
| if (!uobj) |
| return -ENOMEM; |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); |
| scq = idr_find(&ib_uverbs_cq_idr, cmd.send_cq_handle); |
| rcq = idr_find(&ib_uverbs_cq_idr, cmd.recv_cq_handle); |
| srq = cmd.is_srq ? idr_find(&ib_uverbs_srq_idr, cmd.srq_handle) : NULL; |
| |
| if (!pd || pd->uobject->context != file->ucontext || |
| !scq || scq->uobject->context != file->ucontext || |
| !rcq || rcq->uobject->context != file->ucontext || |
| (cmd.is_srq && (!srq || srq->uobject->context != file->ucontext))) { |
| ret = -EINVAL; |
| goto err_up; |
| } |
| |
| attr.event_handler = ib_uverbs_qp_event_handler; |
| attr.qp_context = file; |
| attr.send_cq = scq; |
| attr.recv_cq = rcq; |
| attr.srq = srq; |
| attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; |
| attr.qp_type = cmd.qp_type; |
| |
| 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; |
| |
| uobj->uevent.uobject.user_handle = cmd.user_handle; |
| uobj->uevent.uobject.context = file->ucontext; |
| uobj->uevent.events_reported = 0; |
| INIT_LIST_HEAD(&uobj->uevent.event_list); |
| INIT_LIST_HEAD(&uobj->mcast_list); |
| |
| qp = pd->device->create_qp(pd, &attr, &udata); |
| if (IS_ERR(qp)) { |
| ret = PTR_ERR(qp); |
| goto err_up; |
| } |
| |
| qp->device = pd->device; |
| qp->pd = pd; |
| qp->send_cq = attr.send_cq; |
| qp->recv_cq = attr.recv_cq; |
| qp->srq = attr.srq; |
| qp->uobject = &uobj->uevent.uobject; |
| qp->event_handler = attr.event_handler; |
| qp->qp_context = attr.qp_context; |
| qp->qp_type = attr.qp_type; |
| atomic_inc(&pd->usecnt); |
| atomic_inc(&attr.send_cq->usecnt); |
| atomic_inc(&attr.recv_cq->usecnt); |
| if (attr.srq) |
| atomic_inc(&attr.srq->usecnt); |
| |
| memset(&resp, 0, sizeof resp); |
| resp.qpn = qp->qp_num; |
| |
| retry: |
| if (!idr_pre_get(&ib_uverbs_qp_idr, GFP_KERNEL)) { |
| ret = -ENOMEM; |
| goto err_destroy; |
| } |
| |
| ret = idr_get_new(&ib_uverbs_qp_idr, qp, &uobj->uevent.uobject.id); |
| |
| if (ret == -EAGAIN) |
| goto retry; |
| if (ret) |
| goto err_destroy; |
| |
| resp.qp_handle = uobj->uevent.uobject.id; |
| resp.max_recv_sge = attr.cap.max_recv_sge; |
| resp.max_send_sge = attr.cap.max_send_sge; |
| resp.max_recv_wr = attr.cap.max_recv_wr; |
| resp.max_send_wr = attr.cap.max_send_wr; |
| resp.max_inline_data = attr.cap.max_inline_data; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_idr; |
| } |
| |
| mutex_lock(&file->mutex); |
| list_add_tail(&uobj->uevent.uobject.list, &file->ucontext->qp_list); |
| mutex_unlock(&file->mutex); |
| |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| return in_len; |
| |
| err_idr: |
| idr_remove(&ib_uverbs_qp_idr, uobj->uevent.uobject.id); |
| |
| err_destroy: |
| ib_destroy_qp(qp); |
| atomic_dec(&pd->usecnt); |
| atomic_dec(&attr.send_cq->usecnt); |
| atomic_dec(&attr.recv_cq->usecnt); |
| if (attr.srq) |
| atomic_dec(&attr.srq->usecnt); |
| |
| err_up: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| kfree(uobj); |
| return ret; |
| } |
| |
| 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; |
| } |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); |
| if (qp && qp->uobject->context == file->ucontext) |
| ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); |
| else |
| ret = -EINVAL; |
| |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| 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.en_sqd_async_notify = attr->en_sqd_async_notify; |
| 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; |
| |
| memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16); |
| resp.dest.flow_label = attr->ah_attr.grh.flow_label; |
| resp.dest.sgid_index = attr->ah_attr.grh.sgid_index; |
| resp.dest.hop_limit = attr->ah_attr.grh.hop_limit; |
| resp.dest.traffic_class = attr->ah_attr.grh.traffic_class; |
| resp.dest.dlid = attr->ah_attr.dlid; |
| resp.dest.sl = attr->ah_attr.sl; |
| resp.dest.src_path_bits = attr->ah_attr.src_path_bits; |
| resp.dest.static_rate = attr->ah_attr.static_rate; |
| resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH); |
| resp.dest.port_num = attr->ah_attr.port_num; |
| |
| memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16); |
| resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label; |
| resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index; |
| resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit; |
| resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class; |
| resp.alt_dest.dlid = attr->alt_ah_attr.dlid; |
| resp.alt_dest.sl = attr->alt_ah_attr.sl; |
| resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits; |
| resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate; |
| resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH); |
| resp.alt_dest.port_num = attr->alt_ah_attr.port_num; |
| |
| 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((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| ret = -EFAULT; |
| |
| out: |
| kfree(attr); |
| kfree(init_attr); |
| |
| return ret ? ret : in_len; |
| } |
| |
| ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_modify_qp cmd; |
| struct ib_qp *qp; |
| struct ib_qp_attr *attr; |
| int ret; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| attr = kmalloc(sizeof *attr, GFP_KERNEL); |
| if (!attr) |
| return -ENOMEM; |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); |
| if (!qp || qp->uobject->context != file->ucontext) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| attr->qp_state = cmd.qp_state; |
| attr->cur_qp_state = cmd.cur_qp_state; |
| attr->path_mtu = cmd.path_mtu; |
| attr->path_mig_state = cmd.path_mig_state; |
| attr->qkey = cmd.qkey; |
| attr->rq_psn = cmd.rq_psn; |
| attr->sq_psn = cmd.sq_psn; |
| attr->dest_qp_num = cmd.dest_qp_num; |
| attr->qp_access_flags = cmd.qp_access_flags; |
| attr->pkey_index = cmd.pkey_index; |
| attr->alt_pkey_index = cmd.alt_pkey_index; |
| attr->en_sqd_async_notify = cmd.en_sqd_async_notify; |
| attr->max_rd_atomic = cmd.max_rd_atomic; |
| attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic; |
| attr->min_rnr_timer = cmd.min_rnr_timer; |
| attr->port_num = cmd.port_num; |
| attr->timeout = cmd.timeout; |
| attr->retry_cnt = cmd.retry_cnt; |
| attr->rnr_retry = cmd.rnr_retry; |
| attr->alt_port_num = cmd.alt_port_num; |
| attr->alt_timeout = cmd.alt_timeout; |
| |
| memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16); |
| attr->ah_attr.grh.flow_label = cmd.dest.flow_label; |
| attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index; |
| attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit; |
| attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class; |
| attr->ah_attr.dlid = cmd.dest.dlid; |
| attr->ah_attr.sl = cmd.dest.sl; |
| attr->ah_attr.src_path_bits = cmd.dest.src_path_bits; |
| attr->ah_attr.static_rate = cmd.dest.static_rate; |
| attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0; |
| attr->ah_attr.port_num = cmd.dest.port_num; |
| |
| memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16); |
| attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label; |
| attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index; |
| attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit; |
| attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class; |
| attr->alt_ah_attr.dlid = cmd.alt_dest.dlid; |
| attr->alt_ah_attr.sl = cmd.alt_dest.sl; |
| attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits; |
| attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate; |
| attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0; |
| attr->alt_ah_attr.port_num = cmd.alt_dest.port_num; |
| |
| ret = ib_modify_qp(qp, attr, cmd.attr_mask); |
| if (ret) |
| goto out; |
| |
| ret = in_len; |
| |
| out: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| kfree(attr); |
| |
| 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_qp *qp; |
| struct ib_uqp_object *uobj; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| memset(&resp, 0, sizeof resp); |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); |
| if (!qp || qp->uobject->context != file->ucontext) |
| goto out; |
| |
| uobj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
| |
| if (!list_empty(&uobj->mcast_list)) { |
| ret = -EBUSY; |
| goto out; |
| } |
| |
| ret = ib_destroy_qp(qp); |
| if (ret) |
| goto out; |
| |
| idr_remove(&ib_uverbs_qp_idr, cmd.qp_handle); |
| |
| mutex_lock(&file->mutex); |
| list_del(&uobj->uevent.uobject.list); |
| mutex_unlock(&file->mutex); |
| |
| ib_uverbs_release_uevent(file, &uobj->uevent); |
| |
| resp.events_reported = uobj->uevent.events_reported; |
| |
| kfree(uobj); |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| ret = -EFAULT; |
| |
| out: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| return ret ? ret : in_len; |
| } |
| |
| 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, *bad_wr; |
| struct ib_qp *qp; |
| int i, sg_ind; |
| ssize_t ret = -EINVAL; |
| |
| 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; |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); |
| if (!qp || qp->uobject->context != file->ucontext) |
| goto out; |
| |
| 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; |
| } |
| |
| if (user_wr->num_sge + sg_ind > cmd.sge_count) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + |
| user_wr->num_sge * sizeof (struct ib_sge), |
| GFP_KERNEL); |
| if (!next) { |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| 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; |
| next->imm_data = (__be32 __force) user_wr->imm_data; |
| |
| if (qp->qp_type == IB_QPT_UD) { |
| next->wr.ud.ah = idr_find(&ib_uverbs_ah_idr, |
| user_wr->wr.ud.ah); |
| if (!next->wr.ud.ah) { |
| ret = -EINVAL; |
| goto out; |
| } |
| next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn; |
| next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey; |
| } else { |
| switch (next->opcode) { |
| case IB_WR_RDMA_WRITE: |
| case IB_WR_RDMA_WRITE_WITH_IMM: |
| case IB_WR_RDMA_READ: |
| next->wr.rdma.remote_addr = |
| user_wr->wr.rdma.remote_addr; |
| next->wr.rdma.rkey = |
| user_wr->wr.rdma.rkey; |
| break; |
| case IB_WR_ATOMIC_CMP_AND_SWP: |
| case IB_WR_ATOMIC_FETCH_AND_ADD: |
| next->wr.atomic.remote_addr = |
| user_wr->wr.atomic.remote_addr; |
| next->wr.atomic.compare_add = |
| user_wr->wr.atomic.compare_add; |
| next->wr.atomic.swap = user_wr->wr.atomic.swap; |
| next->wr.atomic.rkey = user_wr->wr.atomic.rkey; |
| break; |
| default: |
| break; |
| } |
| } |
| |
| if (next->num_sge) { |
| next->sg_list = (void *) next + |
| ALIGN(sizeof *next, 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; |
| } |
| sg_ind += next->num_sge; |
| } else |
| next->sg_list = NULL; |
| } |
| |
| resp.bad_wr = 0; |
| ret = qp->device->post_send(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((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| ret = -EFAULT; |
| |
| out: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| while (wr) { |
| next = wr->next; |
| kfree(wr); |
| wr = next; |
| } |
| |
| 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; |
| } |
| |
| 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, *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); |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); |
| if (!qp || qp->uobject->context != file->ucontext) |
| goto out; |
| |
| resp.bad_wr = 0; |
| ret = qp->device->post_recv(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((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| ret = -EFAULT; |
| |
| out: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| 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, *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); |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); |
| if (!srq || srq->uobject->context != file->ucontext) |
| goto out; |
| |
| resp.bad_wr = 0; |
| ret = srq->device->post_srq_recv(srq, wr, &bad_wr); |
| if (ret) |
| for (next = wr; next; next = next->next) { |
| ++resp.bad_wr; |
| if (next == bad_wr) |
| break; |
| } |
| |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| ret = -EFAULT; |
| |
| out: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| 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 ib_ah_attr attr; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
| if (!uobj) |
| return -ENOMEM; |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); |
| if (!pd || pd->uobject->context != file->ucontext) { |
| ret = -EINVAL; |
| goto err_up; |
| } |
| |
| uobj->user_handle = cmd.user_handle; |
| uobj->context = file->ucontext; |
| |
| attr.dlid = cmd.attr.dlid; |
| attr.sl = cmd.attr.sl; |
| attr.src_path_bits = cmd.attr.src_path_bits; |
| attr.static_rate = cmd.attr.static_rate; |
| attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0; |
| attr.port_num = cmd.attr.port_num; |
| attr.grh.flow_label = cmd.attr.grh.flow_label; |
| attr.grh.sgid_index = cmd.attr.grh.sgid_index; |
| attr.grh.hop_limit = cmd.attr.grh.hop_limit; |
| attr.grh.traffic_class = cmd.attr.grh.traffic_class; |
| memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16); |
| |
| ah = ib_create_ah(pd, &attr); |
| if (IS_ERR(ah)) { |
| ret = PTR_ERR(ah); |
| goto err_up; |
| } |
| |
| ah->uobject = uobj; |
| |
| retry: |
| if (!idr_pre_get(&ib_uverbs_ah_idr, GFP_KERNEL)) { |
| ret = -ENOMEM; |
| goto err_destroy; |
| } |
| |
| ret = idr_get_new(&ib_uverbs_ah_idr, ah, &uobj->id); |
| |
| if (ret == -EAGAIN) |
| goto retry; |
| if (ret) |
| goto err_destroy; |
| |
| resp.ah_handle = uobj->id; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_idr; |
| } |
| |
| mutex_lock(&file->mutex); |
| list_add_tail(&uobj->list, &file->ucontext->ah_list); |
| mutex_unlock(&file->mutex); |
| |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| return in_len; |
| |
| err_idr: |
| idr_remove(&ib_uverbs_ah_idr, uobj->id); |
| |
| err_destroy: |
| ib_destroy_ah(ah); |
| |
| err_up: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| kfree(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; |
| struct ib_ah *ah; |
| struct ib_uobject *uobj; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| ah = idr_find(&ib_uverbs_ah_idr, cmd.ah_handle); |
| if (!ah || ah->uobject->context != file->ucontext) |
| goto out; |
| |
| uobj = ah->uobject; |
| |
| ret = ib_destroy_ah(ah); |
| if (ret) |
| goto out; |
| |
| idr_remove(&ib_uverbs_ah_idr, cmd.ah_handle); |
| |
| mutex_lock(&file->mutex); |
| list_del(&uobj->list); |
| mutex_unlock(&file->mutex); |
| |
| kfree(uobj); |
| |
| out: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| return ret ? ret : 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 *uobj; |
| struct ib_uverbs_mcast_entry *mcast; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); |
| if (!qp || qp->uobject->context != file->ucontext) |
| goto out; |
| |
| uobj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
| |
| list_for_each_entry(mcast, &uobj->mcast_list, list) |
| if (cmd.mlid == mcast->lid && |
| !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { |
| ret = 0; |
| goto out; |
| } |
| |
| mcast = kmalloc(sizeof *mcast, GFP_KERNEL); |
| if (!mcast) { |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| 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) { |
| uobj = container_of(qp->uobject, struct ib_uqp_object, |
| uevent.uobject); |
| list_add_tail(&mcast->list, &uobj->mcast_list); |
| } else |
| kfree(mcast); |
| |
| out: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| 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 *uobj; |
| struct ib_qp *qp; |
| struct ib_uverbs_mcast_entry *mcast; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); |
| if (!qp || qp->uobject->context != file->ucontext) |
| goto out; |
| |
| ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
| if (ret) |
| goto out; |
| |
| uobj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
| |
| list_for_each_entry(mcast, &uobj->mcast_list, list) |
| if (cmd.mlid == mcast->lid && |
| !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { |
| list_del(&mcast->list); |
| kfree(mcast); |
| break; |
| } |
| |
| out: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| return ret ? ret : in_len; |
| } |
| |
| 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_srq_resp resp; |
| struct ib_udata udata; |
| struct ib_uevent_object *uobj; |
| struct ib_pd *pd; |
| struct ib_srq *srq; |
| struct ib_srq_init_attr attr; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| INIT_UDATA(&udata, buf + sizeof cmd, |
| (unsigned long) cmd.response + sizeof resp, |
| in_len - sizeof cmd, out_len - sizeof resp); |
| |
| uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
| if (!uobj) |
| return -ENOMEM; |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); |
| |
| if (!pd || pd->uobject->context != file->ucontext) { |
| ret = -EINVAL; |
| goto err_up; |
| } |
| |
| attr.event_handler = ib_uverbs_srq_event_handler; |
| attr.srq_context = file; |
| attr.attr.max_wr = cmd.max_wr; |
| attr.attr.max_sge = cmd.max_sge; |
| attr.attr.srq_limit = cmd.srq_limit; |
| |
| uobj->uobject.user_handle = cmd.user_handle; |
| uobj->uobject.context = file->ucontext; |
| uobj->events_reported = 0; |
| INIT_LIST_HEAD(&uobj->event_list); |
| |
| srq = pd->device->create_srq(pd, &attr, &udata); |
| if (IS_ERR(srq)) { |
| ret = PTR_ERR(srq); |
| goto err_up; |
| } |
| |
| srq->device = pd->device; |
| srq->pd = pd; |
| srq->uobject = &uobj->uobject; |
| srq->event_handler = attr.event_handler; |
| srq->srq_context = attr.srq_context; |
| atomic_inc(&pd->usecnt); |
| atomic_set(&srq->usecnt, 0); |
| |
| memset(&resp, 0, sizeof resp); |
| |
| retry: |
| if (!idr_pre_get(&ib_uverbs_srq_idr, GFP_KERNEL)) { |
| ret = -ENOMEM; |
| goto err_destroy; |
| } |
| |
| ret = idr_get_new(&ib_uverbs_srq_idr, srq, &uobj->uobject.id); |
| |
| if (ret == -EAGAIN) |
| goto retry; |
| if (ret) |
| goto err_destroy; |
| |
| resp.srq_handle = uobj->uobject.id; |
| resp.max_wr = attr.attr.max_wr; |
| resp.max_sge = attr.attr.max_sge; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_idr; |
| } |
| |
| mutex_lock(&file->mutex); |
| list_add_tail(&uobj->uobject.list, &file->ucontext->srq_list); |
| mutex_unlock(&file->mutex); |
| |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| return in_len; |
| |
| err_idr: |
| idr_remove(&ib_uverbs_srq_idr, uobj->uobject.id); |
| |
| err_destroy: |
| ib_destroy_srq(srq); |
| atomic_dec(&pd->usecnt); |
| |
| err_up: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| kfree(uobj); |
| return ret; |
| } |
| |
| 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_srq *srq; |
| struct ib_srq_attr attr; |
| int ret; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); |
| if (!srq || srq->uobject->context != file->ucontext) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| attr.max_wr = cmd.max_wr; |
| attr.srq_limit = cmd.srq_limit; |
| |
| ret = ib_modify_srq(srq, &attr, cmd.attr_mask); |
| |
| out: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| 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; |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); |
| if (srq && srq->uobject->context == file->ucontext) |
| ret = ib_query_srq(srq, &attr); |
| else |
| ret = -EINVAL; |
| |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| if (ret) |
| goto out; |
| |
| 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((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| ret = -EFAULT; |
| |
| out: |
| return ret ? ret : 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_srq *srq; |
| struct ib_uevent_object *uobj; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| mutex_lock(&ib_uverbs_idr_mutex); |
| |
| memset(&resp, 0, sizeof resp); |
| |
| srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); |
| if (!srq || srq->uobject->context != file->ucontext) |
| goto out; |
| |
| uobj = container_of(srq->uobject, struct ib_uevent_object, uobject); |
| |
| ret = ib_destroy_srq(srq); |
| if (ret) |
| goto out; |
| |
| idr_remove(&ib_uverbs_srq_idr, cmd.srq_handle); |
| |
| mutex_lock(&file->mutex); |
| list_del(&uobj->uobject.list); |
| mutex_unlock(&file->mutex); |
| |
| ib_uverbs_release_uevent(file, uobj); |
| |
| resp.events_reported = uobj->events_reported; |
| |
| kfree(uobj); |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| ret = -EFAULT; |
| |
| out: |
| mutex_unlock(&ib_uverbs_idr_mutex); |
| |
| return ret ? ret : in_len; |
| } |