| /* |
| * Copyright (c) International Business Machines Corp., 2008 |
| * Copyright (c) Linux Test Project, 2017-2019 |
| * |
| * This program is free software: you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation, either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| /* |
| * File: ioctl03.c |
| * |
| * Description: This program tests whether all the valid IFF flags are |
| * returned properly by implementation of TUNGETFEATURES ioctl |
| * on kernel 2.6.27 |
| * |
| * Test Name: ioctl03 |
| * |
| * Author: Rusty Russell <rusty@rustcorp.com.au> |
| * |
| * history: created - nov 28 2008 - rusty russell <rusty@rustcorp.com.au> |
| * ported to ltp |
| * - nov 28 2008 - subrata <subrata@linux.vnet.ibm.com> |
| */ |
| |
| #include <sys/types.h> |
| #include <sys/ioctl.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <errno.h> |
| #include <linux/if_tun.h> |
| #include "tst_test.h" |
| |
| #ifndef TUNGETFEATURES |
| #define TUNGETFEATURES _IOR('T', 207, unsigned int) |
| #endif |
| |
| #ifndef IFF_VNET_HDR |
| #define IFF_VNET_HDR 0x4000 |
| #endif |
| |
| #ifndef IFF_MULTI_QUEUE |
| #define IFF_MULTI_QUEUE 0x0100 |
| #endif |
| |
| #ifndef IFF_NAPI |
| #define IFF_NAPI 0x0010 |
| #endif |
| |
| #ifndef IFF_NAPI_FRAGS |
| #define IFF_NAPI_FRAGS 0x0020 |
| #endif |
| |
| static struct { |
| unsigned int flag; |
| const char *name; |
| } known_flags[] = { |
| {IFF_TUN, "TUN"}, |
| {IFF_TAP, "TAP"}, |
| {IFF_NO_PI, "NO_PI"}, |
| {IFF_ONE_QUEUE, "ONE_QUEUE"}, |
| {IFF_VNET_HDR, "VNET_HDR"}, |
| {IFF_MULTI_QUEUE, "MULTI_QUEUE"}, |
| {IFF_NAPI, "IFF_NAPI"}, |
| {IFF_NAPI_FRAGS, "IFF_NAPI_FRAGS"} |
| }; |
| |
| static void verify_features(void) |
| { |
| unsigned int features, i; |
| |
| int netfd = open("/dev/net/tun", O_RDWR); |
| |
| /* Android has tun at /dev/tun */ |
| if (netfd == -1 && (errno == ENODEV || errno == ENOENT)) |
| netfd = open("/dev/tun", O_RDWR); |
| |
| if (netfd == -1) { |
| if (errno == ENODEV || errno == ENOENT) |
| tst_brk(TCONF, "TUN support is missing?"); |
| |
| tst_brk(TBROK | TERRNO, "opening /dev/net/tun failed"); |
| } |
| |
| SAFE_IOCTL(netfd, TUNGETFEATURES, &features); |
| |
| tst_res(TINFO, "Available features are: %#x", features); |
| for (i = 0; i < ARRAY_SIZE(known_flags); i++) { |
| if (features & known_flags[i].flag) { |
| features &= ~known_flags[i].flag; |
| tst_res(TPASS, "%s %#x", known_flags[i].name, |
| known_flags[i].flag); |
| } |
| } |
| if (features) |
| tst_res(TFAIL, "(UNKNOWN %#x)", features); |
| |
| SAFE_CLOSE(netfd); |
| } |
| |
| static struct tst_test test = { |
| .test_all = verify_features, |
| .needs_root = 1, |
| }; |