/src/openvswitch/lib/versions.h

Source (jump to first uncovered line)
/*
 * Copyright (c) 2016 Nicira, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef VERSIONS_H
#define VERSIONS_H 1

#include "ovs-atomic.h"
#include "openvswitch/type-props.h"

typedef uint64_t ovs_version_t;

#define OVS_VERSION_MIN 0                  /* Default version number to use. */
#define OVS_VERSION_MAX (TYPE_MAXIMUM(ovs_version_t) - 1)
#define OVS_VERSION_NOT_REMOVED TYPE_MAXIMUM(ovs_version_t)

/*
 * OVS_VERSION_NOT_REMOVED has a special meaning for 'remove_version',
 * meaning that the rule has been added but not yet removed.
 */
struct versions {
    ovs_version_t add_version;              /* Version object was added in. */
    ATOMIC(ovs_version_t) remove_version;   /* Version object is removed in. */
};

#define VERSIONS_INITIALIZER(ADD, REMOVE) \
    (struct versions){ ADD, REMOVE }

static inline void
versions_set_remove_version(struct versions *versions, ovs_version_t version)
{
    atomic_store_relaxed(&versions->remove_version, version);
}

static inline bool
versions_visible_in_version(const struct versions *versions,
                            ovs_version_t version)
{
    ovs_version_t remove_version;

    /* C11 does not want to access an atomic via a const object pointer. */
    atomic_read_relaxed(&CONST_CAST(struct versions *,
                                    versions)->remove_version,
                        &remove_version);

    return versions->add_version <= version && version < remove_version;
}

static inline bool
versions_is_eventually_invisible(const struct versions *versions)
{
    ovs_version_t remove_version;

    /* C11 does not want to access an atomic via a const object pointer. */
    atomic_read_relaxed(&CONST_CAST(struct versions *,
                                    versions)->remove_version,
                        &remove_version);

    return remove_version < OVS_VERSION_NOT_REMOVED;
}

#endif /* VERSIONS_H */

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Copyright (c) 2016 Nicira, Inc.
3		*
4		* Licensed under the Apache License, Version 2.0 (the "License");
5		* you may not use this file except in compliance with the License.
6		* You may obtain a copy of the License at:
7		*
8		* http://www.apache.org/licenses/LICENSE-2.0
9		*
10		* Unless required by applicable law or agreed to in writing, software
11		* distributed under the License is distributed on an "AS IS" BASIS,
12		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13		* See the License for the specific language governing permissions and
14		* limitations under the License.
15		*/
16
17		#ifndef VERSIONS_H
18		#define VERSIONS_H 1
19
20		#include "ovs-atomic.h"
21		#include "openvswitch/type-props.h"
22
23		typedef uint64_t ovs_version_t;
24
25	0	#define OVS_VERSION_MIN 0 /* Default version number to use. */
26	0	#define OVS_VERSION_MAX (TYPE_MAXIMUM(ovs_version_t) - 1)
27	0	#define OVS_VERSION_NOT_REMOVED TYPE_MAXIMUM(ovs_version_t)
28
29		/*
30		* OVS_VERSION_NOT_REMOVED has a special meaning for 'remove_version',
31		* meaning that the rule has been added but not yet removed.
32		*/
33		struct versions {
34		ovs_version_t add_version; /* Version object was added in. */
35		ATOMIC(ovs_version_t) remove_version; /* Version object is removed in. */
36		};
37
38		#define VERSIONS_INITIALIZER(ADD, REMOVE) \
39	0	(struct versions){ ADD, REMOVE }
40
41		static inline void
42		versions_set_remove_version(struct versions *versions, ovs_version_t version)
43	0	{
44	0	atomic_store_relaxed(&versions->remove_version, version);
45	0	} Unexecuted instantiation: flow_extract_target.c:versions_set_remove_version Unexecuted instantiation: ofp-util.c:versions_set_remove_version Unexecuted instantiation: ovs-router.c:versions_set_remove_version Unexecuted instantiation: tnl-ports.c:versions_set_remove_version Unexecuted instantiation: classifier.c:versions_set_remove_version Unexecuted instantiation: meta-flow.c:versions_set_remove_version Unexecuted instantiation: nx-match.c:versions_set_remove_version
46
47		static inline bool
48		versions_visible_in_version(const struct versions *versions,
49		ovs_version_t version)
50	0	{
51	0	ovs_version_t remove_version;
52
53		/* C11 does not want to access an atomic via a const object pointer. */
54	0	atomic_read_relaxed(&CONST_CAST(struct versions *,
55	0	versions)->remove_version,
56	0	&remove_version);
57
58	0	return versions->add_version <= version && version < remove_version;
59	0	} Unexecuted instantiation: flow_extract_target.c:versions_visible_in_version Unexecuted instantiation: ofp-util.c:versions_visible_in_version Unexecuted instantiation: ovs-router.c:versions_visible_in_version Unexecuted instantiation: tnl-ports.c:versions_visible_in_version Unexecuted instantiation: classifier.c:versions_visible_in_version Unexecuted instantiation: meta-flow.c:versions_visible_in_version Unexecuted instantiation: nx-match.c:versions_visible_in_version
60
61		static inline bool
62		versions_is_eventually_invisible(const struct versions *versions)
63	0	{
64	0	ovs_version_t remove_version;
65
66		/* C11 does not want to access an atomic via a const object pointer. */
67	0	atomic_read_relaxed(&CONST_CAST(struct versions *,
68	0	versions)->remove_version,
69	0	&remove_version);
70
71	0	return remove_version < OVS_VERSION_NOT_REMOVED;
72	0	} Unexecuted instantiation: flow_extract_target.c:versions_is_eventually_invisible Unexecuted instantiation: ofp-util.c:versions_is_eventually_invisible Unexecuted instantiation: ovs-router.c:versions_is_eventually_invisible Unexecuted instantiation: tnl-ports.c:versions_is_eventually_invisible Unexecuted instantiation: classifier.c:versions_is_eventually_invisible Unexecuted instantiation: meta-flow.c:versions_is_eventually_invisible Unexecuted instantiation: nx-match.c:versions_is_eventually_invisible
73
74		#endif /* VERSIONS_H */

Coverage Report

Created: 2025-07-11 06:11