| /* |
| * Copyright (c) 2017, Mellanox Technologies inc. 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 <rdma/uverbs_std_types.h> |
| #include <rdma/ib_user_verbs.h> |
| #include <rdma/ib_verbs.h> |
| #include <linux/bug.h> |
| #include <linux/file.h> |
| #include "rdma_core.h" |
| #include "uverbs.h" |
| |
| static int uverbs_free_ah(struct ib_uobject *uobject, |
| enum rdma_remove_reason why) |
| { |
| return rdma_destroy_ah((struct ib_ah *)uobject->object); |
| } |
| |
| static int uverbs_free_flow(struct ib_uobject *uobject, |
| enum rdma_remove_reason why) |
| { |
| return ib_destroy_flow((struct ib_flow *)uobject->object); |
| } |
| |
| static int uverbs_free_mw(struct ib_uobject *uobject, |
| enum rdma_remove_reason why) |
| { |
| return uverbs_dealloc_mw((struct ib_mw *)uobject->object); |
| } |
| |
| static int uverbs_free_qp(struct ib_uobject *uobject, |
| enum rdma_remove_reason why) |
| { |
| struct ib_qp *qp = uobject->object; |
| struct ib_uqp_object *uqp = |
| container_of(uobject, struct ib_uqp_object, uevent.uobject); |
| int ret; |
| |
| if (why == RDMA_REMOVE_DESTROY) { |
| if (!list_empty(&uqp->mcast_list)) |
| return -EBUSY; |
| } else if (qp == qp->real_qp) { |
| ib_uverbs_detach_umcast(qp, uqp); |
| } |
| |
| ret = ib_destroy_qp(qp); |
| if (ret && why == RDMA_REMOVE_DESTROY) |
| return ret; |
| |
| if (uqp->uxrcd) |
| atomic_dec(&uqp->uxrcd->refcnt); |
| |
| ib_uverbs_release_uevent(uobject->context->ufile, &uqp->uevent); |
| return ret; |
| } |
| |
| static int uverbs_free_rwq_ind_tbl(struct ib_uobject *uobject, |
| enum rdma_remove_reason why) |
| { |
| struct ib_rwq_ind_table *rwq_ind_tbl = uobject->object; |
| struct ib_wq **ind_tbl = rwq_ind_tbl->ind_tbl; |
| int ret; |
| |
| ret = ib_destroy_rwq_ind_table(rwq_ind_tbl); |
| if (!ret || why != RDMA_REMOVE_DESTROY) |
| kfree(ind_tbl); |
| return ret; |
| } |
| |
| static int uverbs_free_wq(struct ib_uobject *uobject, |
| enum rdma_remove_reason why) |
| { |
| struct ib_wq *wq = uobject->object; |
| struct ib_uwq_object *uwq = |
| container_of(uobject, struct ib_uwq_object, uevent.uobject); |
| int ret; |
| |
| ret = ib_destroy_wq(wq); |
| if (!ret || why != RDMA_REMOVE_DESTROY) |
| ib_uverbs_release_uevent(uobject->context->ufile, &uwq->uevent); |
| return ret; |
| } |
| |
| static int uverbs_free_srq(struct ib_uobject *uobject, |
| enum rdma_remove_reason why) |
| { |
| struct ib_srq *srq = uobject->object; |
| struct ib_uevent_object *uevent = |
| container_of(uobject, struct ib_uevent_object, uobject); |
| enum ib_srq_type srq_type = srq->srq_type; |
| int ret; |
| |
| ret = ib_destroy_srq(srq); |
| |
| if (ret && why == RDMA_REMOVE_DESTROY) |
| return ret; |
| |
| if (srq_type == IB_SRQT_XRC) { |
| struct ib_usrq_object *us = |
| container_of(uevent, struct ib_usrq_object, uevent); |
| |
| atomic_dec(&us->uxrcd->refcnt); |
| } |
| |
| ib_uverbs_release_uevent(uobject->context->ufile, uevent); |
| return ret; |
| } |
| |
| static int uverbs_free_cq(struct ib_uobject *uobject, |
| enum rdma_remove_reason why) |
| { |
| struct ib_cq *cq = uobject->object; |
| struct ib_uverbs_event_queue *ev_queue = cq->cq_context; |
| struct ib_ucq_object *ucq = |
| container_of(uobject, struct ib_ucq_object, uobject); |
| int ret; |
| |
| ret = ib_destroy_cq(cq); |
| if (!ret || why != RDMA_REMOVE_DESTROY) |
| ib_uverbs_release_ucq(uobject->context->ufile, ev_queue ? |
| container_of(ev_queue, |
| struct ib_uverbs_completion_event_file, |
| ev_queue) : NULL, |
| ucq); |
| return ret; |
| } |
| |
| static int uverbs_free_mr(struct ib_uobject *uobject, |
| enum rdma_remove_reason why) |
| { |
| return ib_dereg_mr((struct ib_mr *)uobject->object); |
| } |
| |
| static int uverbs_free_xrcd(struct ib_uobject *uobject, |
| enum rdma_remove_reason why) |
| { |
| struct ib_xrcd *xrcd = uobject->object; |
| struct ib_uxrcd_object *uxrcd = |
| container_of(uobject, struct ib_uxrcd_object, uobject); |
| int ret; |
| |
| mutex_lock(&uobject->context->ufile->device->xrcd_tree_mutex); |
| if (why == RDMA_REMOVE_DESTROY && atomic_read(&uxrcd->refcnt)) |
| ret = -EBUSY; |
| else |
| ret = ib_uverbs_dealloc_xrcd(uobject->context->ufile->device, |
| xrcd, why); |
| mutex_unlock(&uobject->context->ufile->device->xrcd_tree_mutex); |
| |
| return ret; |
| } |
| |
| static int uverbs_free_pd(struct ib_uobject *uobject, |
| enum rdma_remove_reason why) |
| { |
| struct ib_pd *pd = uobject->object; |
| |
| if (why == RDMA_REMOVE_DESTROY && atomic_read(&pd->usecnt)) |
| return -EBUSY; |
| |
| ib_dealloc_pd((struct ib_pd *)uobject->object); |
| return 0; |
| } |
| |
| static int uverbs_hot_unplug_completion_event_file(struct ib_uobject_file *uobj_file, |
| enum rdma_remove_reason why) |
| { |
| struct ib_uverbs_completion_event_file *comp_event_file = |
| container_of(uobj_file, struct ib_uverbs_completion_event_file, |
| uobj_file); |
| struct ib_uverbs_event_queue *event_queue = &comp_event_file->ev_queue; |
| |
| spin_lock_irq(&event_queue->lock); |
| event_queue->is_closed = 1; |
| spin_unlock_irq(&event_queue->lock); |
| |
| if (why == RDMA_REMOVE_DRIVER_REMOVE) { |
| wake_up_interruptible(&event_queue->poll_wait); |
| kill_fasync(&event_queue->async_queue, SIGIO, POLL_IN); |
| } |
| return 0; |
| }; |
| |
| const struct uverbs_obj_fd_type uverbs_type_attrs_comp_channel = { |
| .type = UVERBS_TYPE_ALLOC_FD(sizeof(struct ib_uverbs_completion_event_file), 0), |
| .context_closed = uverbs_hot_unplug_completion_event_file, |
| .fops = &uverbs_event_fops, |
| .name = "[infinibandevent]", |
| .flags = O_RDONLY, |
| }; |
| |
| const struct uverbs_obj_idr_type uverbs_type_attrs_cq = { |
| .type = UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_ucq_object), 0), |
| .destroy_object = uverbs_free_cq, |
| }; |
| |
| const struct uverbs_obj_idr_type uverbs_type_attrs_qp = { |
| .type = UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uqp_object), 0), |
| .destroy_object = uverbs_free_qp, |
| }; |
| |
| const struct uverbs_obj_idr_type uverbs_type_attrs_mw = { |
| .type = UVERBS_TYPE_ALLOC_IDR(0), |
| .destroy_object = uverbs_free_mw, |
| }; |
| |
| const struct uverbs_obj_idr_type uverbs_type_attrs_mr = { |
| /* 1 is used in order to free the MR after all the MWs */ |
| .type = UVERBS_TYPE_ALLOC_IDR(1), |
| .destroy_object = uverbs_free_mr, |
| }; |
| |
| const struct uverbs_obj_idr_type uverbs_type_attrs_srq = { |
| .type = UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_usrq_object), 0), |
| .destroy_object = uverbs_free_srq, |
| }; |
| |
| const struct uverbs_obj_idr_type uverbs_type_attrs_ah = { |
| .type = UVERBS_TYPE_ALLOC_IDR(0), |
| .destroy_object = uverbs_free_ah, |
| }; |
| |
| const struct uverbs_obj_idr_type uverbs_type_attrs_flow = { |
| .type = UVERBS_TYPE_ALLOC_IDR(0), |
| .destroy_object = uverbs_free_flow, |
| }; |
| |
| const struct uverbs_obj_idr_type uverbs_type_attrs_wq = { |
| .type = UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uwq_object), 0), |
| .destroy_object = uverbs_free_wq, |
| }; |
| |
| const struct uverbs_obj_idr_type uverbs_type_attrs_rwq_ind_table = { |
| .type = UVERBS_TYPE_ALLOC_IDR(0), |
| .destroy_object = uverbs_free_rwq_ind_tbl, |
| }; |
| |
| const struct uverbs_obj_idr_type uverbs_type_attrs_xrcd = { |
| .type = UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uxrcd_object), 0), |
| .destroy_object = uverbs_free_xrcd, |
| }; |
| |
| const struct uverbs_obj_idr_type uverbs_type_attrs_pd = { |
| /* 2 is used in order to free the PD after MRs */ |
| .type = UVERBS_TYPE_ALLOC_IDR(2), |
| .destroy_object = uverbs_free_pd, |
| }; |