diff options
Diffstat (limited to 'drivers/infiniband/core')
| -rw-r--r-- | drivers/infiniband/core/uverbs_std_types.c | 138 |
1 files changed, 137 insertions, 1 deletions
diff --git a/drivers/infiniband/core/uverbs_std_types.c b/drivers/infiniband/core/uverbs_std_types.c index db66c18857e4..0a98579700ec 100644 --- a/drivers/infiniband/core/uverbs_std_types.c +++ b/drivers/infiniband/core/uverbs_std_types.c @@ -249,6 +249,140 @@ static void create_udata(struct uverbs_attr_bundle *ctx, INIT_UDATA_BUF_OR_NULL(udata, inbuf, outbuf, inbuf_len, outbuf_len); } +static int uverbs_create_cq_handler(struct ib_device *ib_dev, + struct ib_uverbs_file *file, + struct uverbs_attr_bundle *attrs) +{ + struct ib_ucontext *ucontext = file->ucontext; + struct ib_ucq_object *obj; + struct ib_udata uhw; + int ret; + u64 user_handle; + struct ib_cq_init_attr attr = {}; + struct ib_cq *cq; + struct ib_uverbs_completion_event_file *ev_file = NULL; + const struct uverbs_attr *ev_file_attr; + struct ib_uobject *ev_file_uobj; + + if (!(ib_dev->uverbs_cmd_mask & 1ULL << IB_USER_VERBS_CMD_CREATE_CQ)) + return -EOPNOTSUPP; + + ret = uverbs_copy_from(&attr.comp_vector, attrs, CREATE_CQ_COMP_VECTOR); + if (!ret) + ret = uverbs_copy_from(&attr.cqe, attrs, CREATE_CQ_CQE); + if (!ret) + ret = uverbs_copy_from(&user_handle, attrs, CREATE_CQ_USER_HANDLE); + if (ret) + return ret; + + /* Optional param, if it doesn't exist, we get -ENOENT and skip it */ + if (uverbs_copy_from(&attr.flags, attrs, CREATE_CQ_FLAGS) == -EFAULT) + return -EFAULT; + + ev_file_attr = uverbs_attr_get(attrs, CREATE_CQ_COMP_CHANNEL); + if (!IS_ERR(ev_file_attr)) { + ev_file_uobj = ev_file_attr->obj_attr.uobject; + + ev_file = container_of(ev_file_uobj, + struct ib_uverbs_completion_event_file, + uobj_file.uobj); + uverbs_uobject_get(ev_file_uobj); + } + + if (attr.comp_vector >= ucontext->ufile->device->num_comp_vectors) { + ret = -EINVAL; + goto err_event_file; + } + + obj = container_of(uverbs_attr_get(attrs, CREATE_CQ_HANDLE)->obj_attr.uobject, + typeof(*obj), uobject); + obj->uverbs_file = ucontext->ufile; + obj->comp_events_reported = 0; + obj->async_events_reported = 0; + INIT_LIST_HEAD(&obj->comp_list); + INIT_LIST_HEAD(&obj->async_list); + + /* Temporary, only until drivers get the new uverbs_attr_bundle */ + create_udata(attrs, &uhw); + + cq = ib_dev->create_cq(ib_dev, &attr, ucontext, &uhw); + if (IS_ERR(cq)) { + ret = PTR_ERR(cq); + goto err_event_file; + } + + cq->device = ib_dev; + cq->uobject = &obj->uobject; + cq->comp_handler = ib_uverbs_comp_handler; + cq->event_handler = ib_uverbs_cq_event_handler; + cq->cq_context = &ev_file->ev_queue; + obj->uobject.object = cq; + obj->uobject.user_handle = user_handle; + atomic_set(&cq->usecnt, 0); + + ret = uverbs_copy_to(attrs, CREATE_CQ_RESP_CQE, &cq->cqe); + if (ret) + goto err_cq; + + return 0; +err_cq: + ib_destroy_cq(cq); + +err_event_file: + if (ev_file) + uverbs_uobject_put(ev_file_uobj); + return ret; +}; + +static DECLARE_UVERBS_METHOD( + uverbs_method_cq_create, UVERBS_CQ_CREATE, uverbs_create_cq_handler, + &UVERBS_ATTR_IDR(CREATE_CQ_HANDLE, UVERBS_OBJECT_CQ, UVERBS_ACCESS_NEW, + UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)), + &UVERBS_ATTR_PTR_IN(CREATE_CQ_CQE, u32, + UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)), + &UVERBS_ATTR_PTR_IN(CREATE_CQ_USER_HANDLE, u64, + UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)), + &UVERBS_ATTR_FD(CREATE_CQ_COMP_CHANNEL, UVERBS_OBJECT_COMP_CHANNEL, + UVERBS_ACCESS_READ), + &UVERBS_ATTR_PTR_IN(CREATE_CQ_COMP_VECTOR, u32, + UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)), + &UVERBS_ATTR_PTR_IN(CREATE_CQ_FLAGS, u32), + &UVERBS_ATTR_PTR_OUT(CREATE_CQ_RESP_CQE, u32, + UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)), + &uverbs_uhw_compat_in, &uverbs_uhw_compat_out); + +static int uverbs_destroy_cq_handler(struct ib_device *ib_dev, + struct ib_uverbs_file *file, + struct uverbs_attr_bundle *attrs) +{ + struct ib_uverbs_destroy_cq_resp resp; + struct ib_uobject *uobj = + uverbs_attr_get(attrs, DESTROY_CQ_HANDLE)->obj_attr.uobject; + struct ib_ucq_object *obj = container_of(uobj, struct ib_ucq_object, + uobject); + int ret; + + if (!(ib_dev->uverbs_cmd_mask & 1ULL << IB_USER_VERBS_CMD_DESTROY_CQ)) + return -EOPNOTSUPP; + + ret = rdma_explicit_destroy(uobj); + if (ret) + return ret; + + resp.comp_events_reported = obj->comp_events_reported; + resp.async_events_reported = obj->async_events_reported; + + return uverbs_copy_to(attrs, DESTROY_CQ_RESP, &resp); +} + +static DECLARE_UVERBS_METHOD( + uverbs_method_cq_destroy, UVERBS_CQ_DESTROY, uverbs_destroy_cq_handler, + &UVERBS_ATTR_IDR(DESTROY_CQ_HANDLE, UVERBS_OBJECT_CQ, + UVERBS_ACCESS_DESTROY, + UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)), + &UVERBS_ATTR_PTR_OUT(DESTROY_CQ_RESP, struct ib_uverbs_destroy_cq_resp, + UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY))); + DECLARE_UVERBS_OBJECT(uverbs_object_comp_channel, UVERBS_OBJECT_COMP_CHANNEL, &UVERBS_TYPE_ALLOC_FD(0, @@ -259,7 +393,9 @@ DECLARE_UVERBS_OBJECT(uverbs_object_comp_channel, DECLARE_UVERBS_OBJECT(uverbs_object_cq, UVERBS_OBJECT_CQ, &UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_ucq_object), 0, - uverbs_free_cq)); + uverbs_free_cq), + &uverbs_method_cq_create, + &uverbs_method_cq_destroy); DECLARE_UVERBS_OBJECT(uverbs_object_qp, UVERBS_OBJECT_QP, &UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uqp_object), 0, |