forked from Minki/linux
9ee79fce36
Adding CQ ioctl actions:
1. create_cq
2. destroy_cq
This requires adding the following:
1. A specification describing the method
a. Handler
b. Attributes specification
Each attribute is one of the following:
a. PTR_IN - input data
Note: This could be encoded inlined for
data < 64bit
b. PTR_OUT - response data
c. IDR - idr based object
d. FD - fd based object
Blobs attributes (clauses a and b) contain their type,
while objects specifications (clauses c and d)
contains the expected object type (for example, the
given id should be UVERBS_TYPE_PD) and the required
access (READ, WRITE, NEW or DESTROY). If a NEW is
required, the new object's id will be assigned to this
attribute. All attributes could get UA_FLAGS
attribute. Currently we support stating that an
attribute is mandatory or that the specification size
corresponds to a lower bound (and that this attribute
could be extended).
We currently add both default attributes and the two
generic UHW_IN and UHW_OUT driver specific attributes.
2. Handler
A handler gets a uverbs_attr_bundle. The handler developer uses
uverbs_attr_get to fetch an attribute of a given id.
Each of these attribute groups correspond to the specification
group defined in the action (clauses 1.b and 1.c respectively).
The indices of these arrays corresponds to the attribute ids
declared in the specifications (clause 2).
The handler is quite simple. It assumes the infrastructure fetched
all objects and locked, created or destroyed them as required by
the specification. Pointer (or blob) attributes were validated to
match their required sizes. After the handler finished, the
infrastructure commits or rollbacks the objects.
Signed-off-by: Matan Barak <matanb@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
85 lines
2.4 KiB
C
85 lines
2.4 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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#ifndef IB_USER_IOCTL_VERBS_H
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#define IB_USER_IOCTL_VERBS_H
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#include <rdma/rdma_user_ioctl.h>
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#define UVERBS_UDATA_DRIVER_DATA_NS 1
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#define UVERBS_UDATA_DRIVER_DATA_FLAG (1UL << UVERBS_ID_NS_SHIFT)
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enum uverbs_default_objects {
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UVERBS_OBJECT_DEVICE, /* No instances of DEVICE are allowed */
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UVERBS_OBJECT_PD,
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UVERBS_OBJECT_COMP_CHANNEL,
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UVERBS_OBJECT_CQ,
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UVERBS_OBJECT_QP,
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UVERBS_OBJECT_SRQ,
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UVERBS_OBJECT_AH,
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UVERBS_OBJECT_MR,
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UVERBS_OBJECT_MW,
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UVERBS_OBJECT_FLOW,
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UVERBS_OBJECT_XRCD,
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UVERBS_OBJECT_RWQ_IND_TBL,
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UVERBS_OBJECT_WQ,
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UVERBS_OBJECT_LAST,
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};
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enum {
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UVERBS_UHW_IN = UVERBS_UDATA_DRIVER_DATA_FLAG,
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UVERBS_UHW_OUT,
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};
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enum uverbs_create_cq_cmd_attr_ids {
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CREATE_CQ_HANDLE,
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CREATE_CQ_CQE,
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CREATE_CQ_USER_HANDLE,
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CREATE_CQ_COMP_CHANNEL,
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CREATE_CQ_COMP_VECTOR,
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CREATE_CQ_FLAGS,
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CREATE_CQ_RESP_CQE,
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};
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enum uverbs_destroy_cq_cmd_attr_ids {
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DESTROY_CQ_HANDLE,
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DESTROY_CQ_RESP,
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};
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enum uverbs_actions_cq_ops {
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UVERBS_CQ_CREATE,
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UVERBS_CQ_DESTROY,
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};
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#endif
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