diff options
Diffstat (limited to 'drivers/infiniband/core/uverbs_std_types.c')
| -rw-r--r-- | drivers/infiniband/core/uverbs_std_types.c | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/drivers/infiniband/core/uverbs_std_types.c b/drivers/infiniband/core/uverbs_std_types.c new file mode 100644 index 000000000..13776a66e --- /dev/null +++ b/drivers/infiniband/core/uverbs_std_types.c @@ -0,0 +1,269 @@ +/* + * 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/restrack.h> +#include "rdma_core.h" +#include "uverbs.h" + +static int uverbs_free_ah(struct ib_uobject *uobject, + enum rdma_remove_reason why, + struct uverbs_attr_bundle *attrs) +{ + return rdma_destroy_ah_user((struct ib_ah *)uobject->object, + RDMA_DESTROY_AH_SLEEPABLE, + &attrs->driver_udata); +} + +static int uverbs_free_flow(struct ib_uobject *uobject, + enum rdma_remove_reason why, + struct uverbs_attr_bundle *attrs) +{ + struct ib_flow *flow = (struct ib_flow *)uobject->object; + struct ib_uflow_object *uflow = + container_of(uobject, struct ib_uflow_object, uobject); + struct ib_qp *qp = flow->qp; + int ret; + + ret = flow->device->ops.destroy_flow(flow); + if (!ret) { + if (qp) + atomic_dec(&qp->usecnt); + ib_uverbs_flow_resources_free(uflow->resources); + } + + return ret; +} + +static int uverbs_free_mw(struct ib_uobject *uobject, + enum rdma_remove_reason why, + struct uverbs_attr_bundle *attrs) +{ + return uverbs_dealloc_mw((struct ib_mw *)uobject->object); +} + +static int uverbs_free_rwq_ind_tbl(struct ib_uobject *uobject, + enum rdma_remove_reason why, + struct uverbs_attr_bundle *attrs) +{ + struct ib_rwq_ind_table *rwq_ind_tbl = uobject->object; + struct ib_wq **ind_tbl = rwq_ind_tbl->ind_tbl; + u32 table_size = (1 << rwq_ind_tbl->log_ind_tbl_size); + int ret, i; + + if (atomic_read(&rwq_ind_tbl->usecnt)) + return -EBUSY; + + ret = rwq_ind_tbl->device->ops.destroy_rwq_ind_table(rwq_ind_tbl); + if (ret) + return ret; + + for (i = 0; i < table_size; i++) + atomic_dec(&ind_tbl[i]->usecnt); + + kfree(rwq_ind_tbl); + kfree(ind_tbl); + return 0; +} + +static int uverbs_free_xrcd(struct ib_uobject *uobject, + enum rdma_remove_reason why, + struct uverbs_attr_bundle *attrs) +{ + struct ib_xrcd *xrcd = uobject->object; + struct ib_uxrcd_object *uxrcd = + container_of(uobject, struct ib_uxrcd_object, uobject); + int ret; + + if (atomic_read(&uxrcd->refcnt)) + return -EBUSY; + + mutex_lock(&attrs->ufile->device->xrcd_tree_mutex); + ret = ib_uverbs_dealloc_xrcd(uobject, xrcd, why, attrs); + mutex_unlock(&attrs->ufile->device->xrcd_tree_mutex); + + return ret; +} + +static int uverbs_free_pd(struct ib_uobject *uobject, + enum rdma_remove_reason why, + struct uverbs_attr_bundle *attrs) +{ + struct ib_pd *pd = uobject->object; + + if (atomic_read(&pd->usecnt)) + return -EBUSY; + + return ib_dealloc_pd_user(pd, &attrs->driver_udata); +} + +void ib_uverbs_free_event_queue(struct ib_uverbs_event_queue *event_queue) +{ + struct ib_uverbs_event *entry, *tmp; + + spin_lock_irq(&event_queue->lock); + /* + * The user must ensure that no new items are added to the event_list + * once is_closed is set. + */ + event_queue->is_closed = 1; + spin_unlock_irq(&event_queue->lock); + wake_up_interruptible(&event_queue->poll_wait); + kill_fasync(&event_queue->async_queue, SIGIO, POLL_IN); + + spin_lock_irq(&event_queue->lock); + list_for_each_entry_safe(entry, tmp, &event_queue->event_list, list) { + if (entry->counter) + list_del(&entry->obj_list); + list_del(&entry->list); + kfree(entry); + } + spin_unlock_irq(&event_queue->lock); +} + +static void +uverbs_completion_event_file_destroy_uobj(struct ib_uobject *uobj, + enum rdma_remove_reason why) +{ + struct ib_uverbs_completion_event_file *file = + container_of(uobj, struct ib_uverbs_completion_event_file, + uobj); + + ib_uverbs_free_event_queue(&file->ev_queue); +} + +int uverbs_destroy_def_handler(struct uverbs_attr_bundle *attrs) +{ + return 0; +} +EXPORT_SYMBOL(uverbs_destroy_def_handler); + +DECLARE_UVERBS_NAMED_OBJECT( + UVERBS_OBJECT_COMP_CHANNEL, + UVERBS_TYPE_ALLOC_FD(sizeof(struct ib_uverbs_completion_event_file), + uverbs_completion_event_file_destroy_uobj, + &uverbs_event_fops, + "[infinibandevent]", + O_RDONLY)); + +DECLARE_UVERBS_NAMED_METHOD_DESTROY( + UVERBS_METHOD_MW_DESTROY, + UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_MW_HANDLE, + UVERBS_OBJECT_MW, + UVERBS_ACCESS_DESTROY, + UA_MANDATORY)); + +DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_MW, + UVERBS_TYPE_ALLOC_IDR(uverbs_free_mw), + &UVERBS_METHOD(UVERBS_METHOD_MW_DESTROY)); + +DECLARE_UVERBS_NAMED_METHOD_DESTROY( + UVERBS_METHOD_AH_DESTROY, + UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_AH_HANDLE, + UVERBS_OBJECT_AH, + UVERBS_ACCESS_DESTROY, + UA_MANDATORY)); + +DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_AH, + UVERBS_TYPE_ALLOC_IDR(uverbs_free_ah), + &UVERBS_METHOD(UVERBS_METHOD_AH_DESTROY)); + +DECLARE_UVERBS_NAMED_METHOD_DESTROY( + UVERBS_METHOD_FLOW_DESTROY, + UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_FLOW_HANDLE, + UVERBS_OBJECT_FLOW, + UVERBS_ACCESS_DESTROY, + UA_MANDATORY)); + +DECLARE_UVERBS_NAMED_OBJECT( + UVERBS_OBJECT_FLOW, + UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uflow_object), + uverbs_free_flow), + &UVERBS_METHOD(UVERBS_METHOD_FLOW_DESTROY)); + +DECLARE_UVERBS_NAMED_METHOD_DESTROY( + UVERBS_METHOD_RWQ_IND_TBL_DESTROY, + UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_RWQ_IND_TBL_HANDLE, + UVERBS_OBJECT_RWQ_IND_TBL, + UVERBS_ACCESS_DESTROY, + UA_MANDATORY)); + +DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_RWQ_IND_TBL, + UVERBS_TYPE_ALLOC_IDR(uverbs_free_rwq_ind_tbl), + &UVERBS_METHOD(UVERBS_METHOD_RWQ_IND_TBL_DESTROY)); + +DECLARE_UVERBS_NAMED_METHOD_DESTROY( + UVERBS_METHOD_XRCD_DESTROY, + UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_XRCD_HANDLE, + UVERBS_OBJECT_XRCD, + UVERBS_ACCESS_DESTROY, + UA_MANDATORY)); + +DECLARE_UVERBS_NAMED_OBJECT( + UVERBS_OBJECT_XRCD, + UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uxrcd_object), + uverbs_free_xrcd), + &UVERBS_METHOD(UVERBS_METHOD_XRCD_DESTROY)); + +DECLARE_UVERBS_NAMED_METHOD_DESTROY( + UVERBS_METHOD_PD_DESTROY, + UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_PD_HANDLE, + UVERBS_OBJECT_PD, + UVERBS_ACCESS_DESTROY, + UA_MANDATORY)); + +DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_PD, + UVERBS_TYPE_ALLOC_IDR(uverbs_free_pd), + &UVERBS_METHOD(UVERBS_METHOD_PD_DESTROY)); + +const struct uapi_definition uverbs_def_obj_intf[] = { + UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_PD, + UAPI_DEF_OBJ_NEEDS_FN(dealloc_pd)), + UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_COMP_CHANNEL, + UAPI_DEF_OBJ_NEEDS_FN(dealloc_pd)), + UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_AH, + UAPI_DEF_OBJ_NEEDS_FN(destroy_ah)), + UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_MW, + UAPI_DEF_OBJ_NEEDS_FN(dealloc_mw)), + UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_FLOW, + UAPI_DEF_OBJ_NEEDS_FN(destroy_flow)), + UAPI_DEF_CHAIN_OBJ_TREE_NAMED( + UVERBS_OBJECT_RWQ_IND_TBL, + UAPI_DEF_OBJ_NEEDS_FN(destroy_rwq_ind_table)), + UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_XRCD, + UAPI_DEF_OBJ_NEEDS_FN(dealloc_xrcd)), + {} +}; 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