1 /*
2 * Copyright (c) 2023-2024 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29 #include <darwintest.h>
30
31 #include <sys/ioctl.h>
32
33 #include <net/if.h>
34 #include <net/if_arp.h>
35 #include <net/if_fake_var.h>
36
37 #include <stdlib.h>
38 #include <string.h>
39 #include <strings.h>
40
41 #include "net_test_lib.h"
42
43 T_GLOBAL_META(
44 T_META_NAMESPACE("xnu.net"),
45 T_META_ASROOT(true),
46 T_META_RADAR_COMPONENT_NAME("xnu"),
47 T_META_RADAR_COMPONENT_VERSION("networking"),
48 T_META_CHECK_LEAKS(false));
49
50 static char ifname1[IF_NAMESIZE];
51
52 static void
cleanup(void)53 cleanup(void)
54 {
55 if (ifname1[0] != '\0') {
56 (void)ifnet_destroy(ifname1, false);
57 T_LOG("ifnet_destroy %s", ifname1);
58 }
59 }
60
61 T_DECL(if_creation_generation_id, "network interface creation generation id")
62 {
63 int error;
64 int s = inet_dgram_socket_get();
65
66 T_ATEND(cleanup);
67
68 #ifdef SIOCGIFGENERATIONID
69 strlcpy(ifname1, FETH_NAME, sizeof(ifname1));
70 error = ifnet_create_2(ifname1, sizeof(ifname1));
71 if (error != 0) {
72 ifname1[0] = '\0';
73 T_ASSERT_POSIX_SUCCESS(error, "ifnet_create_2");
74 }
75 T_LOG("created %s", ifname1);
76
77 struct ifreq ifr = {};
78
79 strlcpy(ifr.ifr_name, ifname1, sizeof(ifr.ifr_name));
80
81 T_ASSERT_POSIX_SUCCESS(ioctl(s, SIOCGIFGENERATIONID, &ifr), NULL);
82
83 uint64_t if_generation_id = ifr.ifr_creation_generation_id;
84 T_LOG("interface creation generation id: %llu", if_generation_id);
85
86 (void)ifnet_destroy(ifname1, true);
87 T_LOG("destroyed %s", ifname1);
88
89 /* ifnet_create() will retry if creating fails due to EBUSY */
90 T_ASSERT_POSIX_SUCCESS(ifnet_create(ifname1), NULL);
91
92 T_LOG("re-created %s", ifname1);
93
94 T_ASSERT_POSIX_SUCCESS(ioctl(s, SIOCGIFGENERATIONID, &ifr), NULL);
95
96 T_LOG("interface creation generation id: %llu", ifr.ifr_creation_generation_id);
97
98 T_ASSERT_NE_ULLONG(if_generation_id, ifr.ifr_creation_generation_id,
99 "interface generation id are different");
100 #else
101 T_SKIP("SIOCGIFGENERATIONID does not exist");
102 #endif
103 }
104