276 lines
8 KiB
C
276 lines
8 KiB
C
/*
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* Copyright (c) 2017, Mellanox Technologies inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <rdma/uverbs_std_types.h>
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#include <rdma/ib_user_verbs.h>
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#include <rdma/ib_verbs.h>
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#include <linux/bug.h>
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#include <linux/file.h>
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#include "rdma_core.h"
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#include "uverbs.h"
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static int uverbs_free_ah(struct ib_uobject *uobject,
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enum rdma_remove_reason why)
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{
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return rdma_destroy_ah((struct ib_ah *)uobject->object);
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}
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static int uverbs_free_flow(struct ib_uobject *uobject,
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enum rdma_remove_reason why)
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{
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return ib_destroy_flow((struct ib_flow *)uobject->object);
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}
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static int uverbs_free_mw(struct ib_uobject *uobject,
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enum rdma_remove_reason why)
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{
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return uverbs_dealloc_mw((struct ib_mw *)uobject->object);
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}
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static int uverbs_free_qp(struct ib_uobject *uobject,
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enum rdma_remove_reason why)
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{
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struct ib_qp *qp = uobject->object;
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struct ib_uqp_object *uqp =
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container_of(uobject, struct ib_uqp_object, uevent.uobject);
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int ret;
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if (why == RDMA_REMOVE_DESTROY) {
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if (!list_empty(&uqp->mcast_list))
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return -EBUSY;
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} else if (qp == qp->real_qp) {
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ib_uverbs_detach_umcast(qp, uqp);
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}
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ret = ib_destroy_qp(qp);
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if (ret && why == RDMA_REMOVE_DESTROY)
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return ret;
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if (uqp->uxrcd)
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atomic_dec(&uqp->uxrcd->refcnt);
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ib_uverbs_release_uevent(uobject->context->ufile, &uqp->uevent);
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return ret;
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}
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static int uverbs_free_rwq_ind_tbl(struct ib_uobject *uobject,
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enum rdma_remove_reason why)
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{
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struct ib_rwq_ind_table *rwq_ind_tbl = uobject->object;
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struct ib_wq **ind_tbl = rwq_ind_tbl->ind_tbl;
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int ret;
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ret = ib_destroy_rwq_ind_table(rwq_ind_tbl);
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if (!ret || why != RDMA_REMOVE_DESTROY)
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kfree(ind_tbl);
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return ret;
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}
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static int uverbs_free_wq(struct ib_uobject *uobject,
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enum rdma_remove_reason why)
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{
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struct ib_wq *wq = uobject->object;
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struct ib_uwq_object *uwq =
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container_of(uobject, struct ib_uwq_object, uevent.uobject);
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int ret;
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ret = ib_destroy_wq(wq);
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if (!ret || why != RDMA_REMOVE_DESTROY)
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ib_uverbs_release_uevent(uobject->context->ufile, &uwq->uevent);
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return ret;
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}
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static int uverbs_free_srq(struct ib_uobject *uobject,
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enum rdma_remove_reason why)
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{
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struct ib_srq *srq = uobject->object;
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struct ib_uevent_object *uevent =
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container_of(uobject, struct ib_uevent_object, uobject);
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enum ib_srq_type srq_type = srq->srq_type;
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int ret;
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ret = ib_destroy_srq(srq);
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if (ret && why == RDMA_REMOVE_DESTROY)
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return ret;
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if (srq_type == IB_SRQT_XRC) {
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struct ib_usrq_object *us =
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container_of(uevent, struct ib_usrq_object, uevent);
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atomic_dec(&us->uxrcd->refcnt);
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}
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ib_uverbs_release_uevent(uobject->context->ufile, uevent);
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return ret;
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}
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static int uverbs_free_cq(struct ib_uobject *uobject,
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enum rdma_remove_reason why)
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{
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struct ib_cq *cq = uobject->object;
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struct ib_uverbs_event_queue *ev_queue = cq->cq_context;
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struct ib_ucq_object *ucq =
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container_of(uobject, struct ib_ucq_object, uobject);
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int ret;
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ret = ib_destroy_cq(cq);
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if (!ret || why != RDMA_REMOVE_DESTROY)
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ib_uverbs_release_ucq(uobject->context->ufile, ev_queue ?
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container_of(ev_queue,
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struct ib_uverbs_completion_event_file,
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ev_queue) : NULL,
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ucq);
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return ret;
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}
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static int uverbs_free_mr(struct ib_uobject *uobject,
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enum rdma_remove_reason why)
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{
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return ib_dereg_mr((struct ib_mr *)uobject->object);
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}
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static int uverbs_free_xrcd(struct ib_uobject *uobject,
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enum rdma_remove_reason why)
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{
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struct ib_xrcd *xrcd = uobject->object;
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struct ib_uxrcd_object *uxrcd =
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container_of(uobject, struct ib_uxrcd_object, uobject);
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int ret;
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mutex_lock(&uobject->context->ufile->device->xrcd_tree_mutex);
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if (why == RDMA_REMOVE_DESTROY && atomic_read(&uxrcd->refcnt))
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ret = -EBUSY;
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else
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ret = ib_uverbs_dealloc_xrcd(uobject->context->ufile->device,
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xrcd, why);
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mutex_unlock(&uobject->context->ufile->device->xrcd_tree_mutex);
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return ret;
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}
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static int uverbs_free_pd(struct ib_uobject *uobject,
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enum rdma_remove_reason why)
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{
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struct ib_pd *pd = uobject->object;
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if (why == RDMA_REMOVE_DESTROY && atomic_read(&pd->usecnt))
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return -EBUSY;
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ib_dealloc_pd((struct ib_pd *)uobject->object);
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return 0;
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}
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static int uverbs_hot_unplug_completion_event_file(struct ib_uobject_file *uobj_file,
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enum rdma_remove_reason why)
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{
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struct ib_uverbs_completion_event_file *comp_event_file =
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container_of(uobj_file, struct ib_uverbs_completion_event_file,
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uobj_file);
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struct ib_uverbs_event_queue *event_queue = &comp_event_file->ev_queue;
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spin_lock_irq(&event_queue->lock);
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event_queue->is_closed = 1;
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spin_unlock_irq(&event_queue->lock);
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if (why == RDMA_REMOVE_DRIVER_REMOVE) {
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wake_up_interruptible(&event_queue->poll_wait);
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kill_fasync(&event_queue->async_queue, SIGIO, POLL_IN);
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}
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return 0;
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};
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const struct uverbs_obj_fd_type uverbs_type_attrs_comp_channel = {
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.type = UVERBS_TYPE_ALLOC_FD(sizeof(struct ib_uverbs_completion_event_file), 0),
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.context_closed = uverbs_hot_unplug_completion_event_file,
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.fops = &uverbs_event_fops,
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.name = "[infinibandevent]",
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.flags = O_RDONLY,
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};
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const struct uverbs_obj_idr_type uverbs_type_attrs_cq = {
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.type = UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_ucq_object), 0),
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.destroy_object = uverbs_free_cq,
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};
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const struct uverbs_obj_idr_type uverbs_type_attrs_qp = {
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.type = UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uqp_object), 0),
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.destroy_object = uverbs_free_qp,
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};
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const struct uverbs_obj_idr_type uverbs_type_attrs_mw = {
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.type = UVERBS_TYPE_ALLOC_IDR(0),
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.destroy_object = uverbs_free_mw,
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};
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const struct uverbs_obj_idr_type uverbs_type_attrs_mr = {
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/* 1 is used in order to free the MR after all the MWs */
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.type = UVERBS_TYPE_ALLOC_IDR(1),
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.destroy_object = uverbs_free_mr,
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};
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const struct uverbs_obj_idr_type uverbs_type_attrs_srq = {
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.type = UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_usrq_object), 0),
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.destroy_object = uverbs_free_srq,
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};
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const struct uverbs_obj_idr_type uverbs_type_attrs_ah = {
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.type = UVERBS_TYPE_ALLOC_IDR(0),
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.destroy_object = uverbs_free_ah,
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};
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const struct uverbs_obj_idr_type uverbs_type_attrs_flow = {
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.type = UVERBS_TYPE_ALLOC_IDR(0),
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.destroy_object = uverbs_free_flow,
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};
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const struct uverbs_obj_idr_type uverbs_type_attrs_wq = {
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.type = UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uwq_object), 0),
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.destroy_object = uverbs_free_wq,
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};
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const struct uverbs_obj_idr_type uverbs_type_attrs_rwq_ind_table = {
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.type = UVERBS_TYPE_ALLOC_IDR(0),
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.destroy_object = uverbs_free_rwq_ind_tbl,
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};
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const struct uverbs_obj_idr_type uverbs_type_attrs_xrcd = {
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.type = UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uxrcd_object), 0),
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.destroy_object = uverbs_free_xrcd,
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};
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const struct uverbs_obj_idr_type uverbs_type_attrs_pd = {
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/* 2 is used in order to free the PD after MRs */
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.type = UVERBS_TYPE_ALLOC_IDR(2),
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.destroy_object = uverbs_free_pd,
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};
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