1/*
2 * hostapd / VLAN definition
3 * Copyright (c) 2016, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9#include "utils/includes.h"
10
11#include "utils/common.h"
12#include "ap/vlan.h"
13
14/* compare the two arguments, NULL is treated as empty
15 * return zero iff they are equal
16 */
17int vlan_compare(struct vlan_description *a, struct vlan_description *b)
18{
19	int i;
20	const int a_empty = !a || !a->notempty;
21	const int b_empty = !b || !b->notempty;
22
23	if (a_empty && b_empty)
24		return 0;
25	if (a_empty || b_empty)
26		return 1;
27	if (a->untagged != b->untagged)
28		return 1;
29	for (i = 0; i < MAX_NUM_TAGGED_VLAN; i++) {
30		if (a->tagged[i] != b->tagged[i])
31			return 1;
32	}
33	return 0;
34}
35