diff options
Diffstat (limited to 'drivers/infiniband/core/uverbs_std_types_wq.c')
| -rw-r--r-- | drivers/infiniband/core/uverbs_std_types_wq.c | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/drivers/infiniband/core/uverbs_std_types_wq.c b/drivers/infiniband/core/uverbs_std_types_wq.c new file mode 100644 index 000000000000..cad842ede077 --- /dev/null +++ b/drivers/infiniband/core/uverbs_std_types_wq.c @@ -0,0 +1,194 @@ +// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB +/* + * Copyright (c) 2020, Mellanox Technologies inc. All rights reserved. + */ + +#include <rdma/uverbs_std_types.h> +#include "rdma_core.h" +#include "uverbs.h" + +static int uverbs_free_wq(struct ib_uobject *uobject, + enum rdma_remove_reason why, + struct uverbs_attr_bundle *attrs) +{ + 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, &attrs->driver_udata); + if (ib_is_destroy_retryable(ret, why, uobject)) + return ret; + + ib_uverbs_release_uevent(&uwq->uevent); + return ret; +} + +static int UVERBS_HANDLER(UVERBS_METHOD_WQ_CREATE)( + struct uverbs_attr_bundle *attrs) +{ + struct ib_uwq_object *obj = container_of( + uverbs_attr_get_uobject(attrs, UVERBS_ATTR_CREATE_WQ_HANDLE), + typeof(*obj), uevent.uobject); + struct ib_pd *pd = + uverbs_attr_get_obj(attrs, UVERBS_ATTR_CREATE_WQ_PD_HANDLE); + struct ib_cq *cq = + uverbs_attr_get_obj(attrs, UVERBS_ATTR_CREATE_WQ_CQ_HANDLE); + struct ib_wq_init_attr wq_init_attr = {}; + struct ib_wq *wq; + u64 user_handle; + int ret; + + ret = uverbs_get_flags32(&wq_init_attr.create_flags, attrs, + UVERBS_ATTR_CREATE_WQ_FLAGS, + IB_UVERBS_WQ_FLAGS_CVLAN_STRIPPING | + IB_UVERBS_WQ_FLAGS_SCATTER_FCS | + IB_UVERBS_WQ_FLAGS_DELAY_DROP | + IB_UVERBS_WQ_FLAGS_PCI_WRITE_END_PADDING); + if (!ret) + ret = uverbs_copy_from(&wq_init_attr.max_sge, attrs, + UVERBS_ATTR_CREATE_WQ_MAX_SGE); + if (!ret) + ret = uverbs_copy_from(&wq_init_attr.max_wr, attrs, + UVERBS_ATTR_CREATE_WQ_MAX_WR); + if (!ret) + ret = uverbs_copy_from(&user_handle, attrs, + UVERBS_ATTR_CREATE_WQ_USER_HANDLE); + if (!ret) + ret = uverbs_get_const(&wq_init_attr.wq_type, attrs, + UVERBS_ATTR_CREATE_WQ_TYPE); + if (ret) + return ret; + + if (wq_init_attr.wq_type != IB_WQT_RQ) + return -EINVAL; + + obj->uevent.event_file = ib_uverbs_get_async_event(attrs, + UVERBS_ATTR_CREATE_WQ_EVENT_FD); + obj->uevent.uobject.user_handle = user_handle; + INIT_LIST_HEAD(&obj->uevent.event_list); + wq_init_attr.event_handler = ib_uverbs_wq_event_handler; + wq_init_attr.wq_context = attrs->ufile; + wq_init_attr.cq = cq; + + wq = pd->device->ops.create_wq(pd, &wq_init_attr, &attrs->driver_udata); + if (IS_ERR(wq)) { + ret = PTR_ERR(wq); + goto err; + } + + obj->uevent.uobject.object = wq; + wq->wq_type = wq_init_attr.wq_type; + wq->cq = cq; + wq->pd = pd; + wq->device = pd->device; + wq->wq_context = wq_init_attr.wq_context; + atomic_set(&wq->usecnt, 0); + atomic_inc(&pd->usecnt); + atomic_inc(&cq->usecnt); + wq->uobject = obj; + uverbs_finalize_uobj_create(attrs, UVERBS_ATTR_CREATE_WQ_HANDLE); + + ret = uverbs_copy_to(attrs, UVERBS_ATTR_CREATE_WQ_RESP_MAX_WR, + &wq_init_attr.max_wr, + sizeof(wq_init_attr.max_wr)); + if (ret) + return ret; + + ret = uverbs_copy_to(attrs, UVERBS_ATTR_CREATE_WQ_RESP_MAX_SGE, + &wq_init_attr.max_sge, + sizeof(wq_init_attr.max_sge)); + if (ret) + return ret; + + ret = uverbs_copy_to(attrs, UVERBS_ATTR_CREATE_WQ_RESP_WQ_NUM, + &wq->wq_num, + sizeof(wq->wq_num)); + return ret; + +err: + if (obj->uevent.event_file) + uverbs_uobject_put(&obj->uevent.event_file->uobj); + return ret; +}; + +DECLARE_UVERBS_NAMED_METHOD( + UVERBS_METHOD_WQ_CREATE, + UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_WQ_HANDLE, + UVERBS_OBJECT_WQ, + UVERBS_ACCESS_NEW, + UA_MANDATORY), + UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_WQ_PD_HANDLE, + UVERBS_OBJECT_PD, + UVERBS_ACCESS_READ, + UA_MANDATORY), + UVERBS_ATTR_CONST_IN(UVERBS_ATTR_CREATE_WQ_TYPE, + enum ib_wq_type, + UA_MANDATORY), + UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_WQ_USER_HANDLE, + UVERBS_ATTR_TYPE(u64), + UA_MANDATORY), + UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_WQ_MAX_WR, + UVERBS_ATTR_TYPE(u32), + UA_MANDATORY), + UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_WQ_MAX_SGE, + UVERBS_ATTR_TYPE(u32), + UA_MANDATORY), + UVERBS_ATTR_FLAGS_IN(UVERBS_ATTR_CREATE_WQ_FLAGS, + enum ib_uverbs_wq_flags, + UA_MANDATORY), + UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_WQ_CQ_HANDLE, + UVERBS_OBJECT_CQ, + UVERBS_ACCESS_READ, + UA_OPTIONAL), + UVERBS_ATTR_FD(UVERBS_ATTR_CREATE_WQ_EVENT_FD, + UVERBS_OBJECT_ASYNC_EVENT, + UVERBS_ACCESS_READ, + UA_OPTIONAL), + UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_CREATE_WQ_RESP_MAX_WR, + UVERBS_ATTR_TYPE(u32), + UA_MANDATORY), + UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_CREATE_WQ_RESP_MAX_SGE, + UVERBS_ATTR_TYPE(u32), + UA_MANDATORY), + UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_CREATE_WQ_RESP_WQ_NUM, + UVERBS_ATTR_TYPE(u32), + UA_OPTIONAL), + UVERBS_ATTR_UHW()); + +static int UVERBS_HANDLER(UVERBS_METHOD_WQ_DESTROY)( + struct uverbs_attr_bundle *attrs) +{ + struct ib_uobject *uobj = + uverbs_attr_get_uobject(attrs, UVERBS_ATTR_DESTROY_WQ_HANDLE); + struct ib_uwq_object *obj = + container_of(uobj, struct ib_uwq_object, uevent.uobject); + + return uverbs_copy_to(attrs, UVERBS_ATTR_DESTROY_WQ_RESP, + &obj->uevent.events_reported, + sizeof(obj->uevent.events_reported)); +} + +DECLARE_UVERBS_NAMED_METHOD( + UVERBS_METHOD_WQ_DESTROY, + UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_WQ_HANDLE, + UVERBS_OBJECT_WQ, + UVERBS_ACCESS_DESTROY, + UA_MANDATORY), + UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_DESTROY_WQ_RESP, + UVERBS_ATTR_TYPE(u32), + UA_MANDATORY)); + + +DECLARE_UVERBS_NAMED_OBJECT( + UVERBS_OBJECT_WQ, + UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uwq_object), uverbs_free_wq), + &UVERBS_METHOD(UVERBS_METHOD_WQ_CREATE), + &UVERBS_METHOD(UVERBS_METHOD_WQ_DESTROY) +); + +const struct uapi_definition uverbs_def_obj_wq[] = { + UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_WQ, + UAPI_DEF_OBJ_NEEDS_FN(destroy_wq)), + {} +}; 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