1 /*
2 *
3 * Copyright (c) Rusty Russell <rusty@rustcorp.com.au>
4 * Copyright (c) International Business Machines Corp., 2008
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
14 * the GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 /*
22 *
23 *
24 * File: ioctl03.c
25 *
26 * Description: This program tests whether all the valid IFF flags are
27 * returned properly by implementation of TUNGETFEATURES ioctl
28 * on kernel 2.6.27
29 *
30 * Total Tests: 1
31 *
32 * Test Name: ioctl03
33 *
34 * Author: Rusty Russell <rusty@rustcorp.com.au>
35 *
36 * History: Created - Nov 28 2008 - Rusty Russell <rusty@rustcorp.com.au>
37 * Ported to LTP
38 * - Nov 28 2008 - Subrata <subrata@linux.vnet.ibm.com>
39 */
40
41 #include <sys/types.h>
42 #include <sys/ioctl.h>
43 #include <sys/stat.h>
44 #include <fcntl.h>
45 #include <errno.h>
46 #include <stdio.h>
47 #include <linux/if_tun.h>
48
49 #include "test.h"
50
51 #ifndef TUNGETFEATURES
52 #define TUNGETFEATURES _IOR('T', 207, unsigned int)
53 #endif
54
55 #ifndef IFF_VNET_HDR
56 #define IFF_VNET_HDR 0x4000
57 #endif
58
59 #ifndef IFF_MULTI_QUEUE
60 #define IFF_MULTI_QUEUE 0x0100
61 #endif
62
63 char *TCID = "ioctl03";
64 int TST_TOTAL = 1;
65
cleanup(void)66 static void cleanup(void)
67 {
68 tst_rmdir();
69 }
70
setup(void)71 static void setup(void)
72 {
73 TEST_PAUSE;
74 tst_tmpdir();
75 }
76
77 static struct {
78 unsigned int flag;
79 const char *name;
80 } known_flags[] = {
81 {
82 IFF_TUN, "TUN"}, {
83 IFF_TAP, "TAP"}, {
84 IFF_NO_PI, "NO_PI"}, {
85 IFF_ONE_QUEUE, "ONE_QUEUE"}, {
86 IFF_VNET_HDR, "VNET_HDR"}, {
87 IFF_MULTI_QUEUE, "MULTI_QUEUE"}
88 };
89
main(void)90 int main(void)
91 {
92 unsigned int features, i;
93
94 setup();
95 tst_require_root();
96
97 int netfd = open("/dev/net/tun", O_RDWR);
98 if (netfd < 0)
99 tst_brkm(TBROK | TERRNO, cleanup,
100 "opening /dev/net/tun failed");
101
102 if (ioctl(netfd, TUNGETFEATURES, &features) != 0)
103 tst_brkm(TCONF, cleanup,
104 "Kernel does not support TUNGETFEATURES");
105 tst_resm(TINFO, "Available features are: %#x", features);
106 for (i = 0; i < sizeof(known_flags) / sizeof(known_flags[0]); i++) {
107 if (features & known_flags[i].flag) {
108 features &= ~known_flags[i].flag;
109 tst_resm(TINFO, "%s %#x", known_flags[i].name,
110 known_flags[i].flag);
111 }
112 }
113 if (features)
114 tst_resm(TFAIL, "(UNKNOWN %#x)", features);
115 cleanup();
116 tst_exit();
117 }
118