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https://github.com/openvswitch/ovs
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e0edde6fee
Replaced all instances of Nicira Networks(, Inc) to Nicira, Inc. Feature #10593 Signed-off-by: Raju Subramanian <rsubramanian@nicira.com> Signed-off-by: Ben Pfaff <blp@nicira.com>
44 lines
1.5 KiB
C
44 lines
1.5 KiB
C
/* Copyright (c) 2011 Nicira, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef VLAN_BITMAP_H
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#define VLAN_BITMAP_H 1
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#include <stdbool.h>
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#include <stdint.h>
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#include "bitmap.h"
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/* A "VLAN bitmap" is a 4096-bit bitmap that represents a set. A 1-bit
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* indicates that the respective VLAN is a member of the set, a 0-bit indicates
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* that it is not. There is one wrinkle: NULL is a valid value that indicates
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* either that all VLANs are or are not members, depending on the vlan_bitmap.
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*
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* This is empirically a useful data structure. */
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unsigned long *vlan_bitmap_from_array(const int64_t *vlans, size_t n_vlans);
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int vlan_bitmap_from_array__(const int64_t *vlans, size_t n_vlans,
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unsigned long int *b);
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bool vlan_bitmap_equal(const unsigned long *a, const unsigned long *b);
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/* Returns a new copy of 'vlans'. */
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static inline unsigned long *
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vlan_bitmap_clone(const unsigned long *vlans)
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{
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return vlans ? bitmap_clone(vlans, 4096) : NULL;
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}
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#endif /* lib/vlan-bitmap.h */
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