94 lines
2.0 KiB
C
94 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) International Business Machines Corp., 2008
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* Copyright (c) Linux Test Project, 2017-2019
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* Author: Rusty Russell <rusty@rustcorp.com.au>
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* Ported to LTP: subrata <subrata@linux.vnet.ibm.com>
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*/
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/*
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* This program tests whether all the valid IFF flags are
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* returned properly by implementation of TUNGETFEATURES ioctl
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* on kernel 2.6.27
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*/
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <linux/if_tun.h>
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#include "tst_test.h"
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#ifndef TUNGETFEATURES
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#define TUNGETFEATURES _IOR('T', 207, unsigned int)
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#endif
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#ifndef IFF_VNET_HDR
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#define IFF_VNET_HDR 0x4000
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#endif
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#ifndef IFF_MULTI_QUEUE
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#define IFF_MULTI_QUEUE 0x0100
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#endif
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#ifndef IFF_NAPI
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#define IFF_NAPI 0x0010
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#endif
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#ifndef IFF_NAPI_FRAGS
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#define IFF_NAPI_FRAGS 0x0020
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#endif
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static struct {
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unsigned int flag;
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const char *name;
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} known_flags[] = {
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{IFF_TUN, "TUN"},
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{IFF_TAP, "TAP"},
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{IFF_NO_PI, "NO_PI"},
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{IFF_ONE_QUEUE, "ONE_QUEUE"},
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{IFF_VNET_HDR, "VNET_HDR"},
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{IFF_MULTI_QUEUE, "MULTI_QUEUE"},
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{IFF_NAPI, "IFF_NAPI"},
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{IFF_NAPI_FRAGS, "IFF_NAPI_FRAGS"}
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};
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static void verify_features(void)
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{
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unsigned int features, i;
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int netfd = open("/dev/net/tun", O_RDWR);
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/* Android has tun at /dev/tun */
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if (netfd == -1 && (errno == ENODEV || errno == ENOENT))
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netfd = open("/dev/tun", O_RDWR);
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if (netfd == -1) {
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if (errno == ENODEV || errno == ENOENT)
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tst_brk(TCONF, "TUN support is missing?");
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tst_brk(TBROK | TERRNO, "opening /dev/net/tun failed");
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}
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SAFE_IOCTL(netfd, TUNGETFEATURES, &features);
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tst_res(TINFO, "Available features are: %#x", features);
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for (i = 0; i < ARRAY_SIZE(known_flags); i++) {
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if (features & known_flags[i].flag) {
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features &= ~known_flags[i].flag;
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tst_res(TPASS, "%s %#x", known_flags[i].name,
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known_flags[i].flag);
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}
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}
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if (features)
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tst_res(TFAIL, "(UNKNOWN %#x)", features);
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SAFE_CLOSE(netfd);
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}
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static struct tst_test test = {
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.test_all = verify_features,
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.needs_root = 1,
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};
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