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networkctl: use safe_qsort in case no links are present
[thirdparty/systemd.git] / src / shared / missing.h
CommitLineData
03467c88 1/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
15ae422b 2
c2f1db8f 3#pragma once
b9f880f4 4
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5/***
6 This file is part of systemd.
7
8 Copyright 2010 Lennart Poettering
9
10 systemd is free software; you can redistribute it and/or modify it
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11 under the terms of the GNU Lesser General Public License as published by
12 the Free Software Foundation; either version 2.1 of the License, or
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13 (at your option) any later version.
14
15 systemd is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
5430f7f2 18 Lesser General Public License for more details.
15ae422b 19
5430f7f2 20 You should have received a copy of the GNU Lesser General Public License
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21 along with systemd; If not, see <http://www.gnu.org/licenses/>.
22***/
23
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24/* Missing glibc definitions to access certain kernel APIs */
25
26#include <sys/resource.h>
15ae422b 27#include <sys/syscall.h>
16c42ce1 28#include <fcntl.h>
4db17f29 29#include <stdlib.h>
82c121a4 30#include <unistd.h>
3b794314 31#include <errno.h>
dd6c17b1 32#include <linux/oom.h>
118ecf32 33#include <linux/input.h>
d5eff740 34#include <linux/if_link.h>
a853c45d 35#include <linux/loop.h>
0830ba61 36#include <linux/if_link.h>
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37
38#ifdef HAVE_AUDIT
39#include <libaudit.h>
40#endif
b9f880f4 41
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42#include "macro.h"
43
d59d0a2b 44#ifdef ARCH_MIPS
45#include <asm/sgidefs.h>
46#endif
47
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48#ifndef RLIMIT_RTTIME
49#define RLIMIT_RTTIME 15
50#endif
51
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LP
52/* If RLIMIT_RTTIME is not defined, then we cannot use RLIMIT_NLIMITS as is */
53#define _RLIMIT_MAX (RLIMIT_RTTIME+1 > RLIMIT_NLIMITS ? RLIMIT_RTTIME+1 : RLIMIT_NLIMITS)
54
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55#ifndef F_LINUX_SPECIFIC_BASE
56#define F_LINUX_SPECIFIC_BASE 1024
57#endif
58
59#ifndef F_SETPIPE_SZ
60#define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7)
61#endif
62
63#ifndef F_GETPIPE_SZ
64#define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8)
65#endif
66
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67#ifndef IP_FREEBIND
68#define IP_FREEBIND 15
69#endif
70
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71#ifndef OOM_SCORE_ADJ_MIN
72#define OOM_SCORE_ADJ_MIN (-1000)
73#endif
74
75#ifndef OOM_SCORE_ADJ_MAX
76#define OOM_SCORE_ADJ_MAX 1000
77#endif
15ae422b 78
4927fcae 79#ifndef AUDIT_SERVICE_START
dd6c17b1 80#define AUDIT_SERVICE_START 1130 /* Service (daemon) start */
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81#endif
82
83#ifndef AUDIT_SERVICE_STOP
dd6c17b1 84#define AUDIT_SERVICE_STOP 1131 /* Service (daemon) stop */
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85#endif
86
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87#ifndef TIOCVHANGUP
88#define TIOCVHANGUP 0x5437
89#endif
90
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91#ifndef IP_TRANSPARENT
92#define IP_TRANSPARENT 19
93#endif
94
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95#ifndef SOL_NETLINK
96#define SOL_NETLINK 270
97#endif
98
a8348796 99#if !HAVE_DECL_PIVOT_ROOT
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100static inline int pivot_root(const char *new_root, const char *put_old) {
101 return syscall(SYS_pivot_root, new_root, put_old);
102}
a8348796 103#endif
dd6c17b1 104
22be093f 105#ifdef __x86_64__
d59d0a2b 106# ifndef __NR_fanotify_init
107# define __NR_fanotify_init 300
108# endif
109# ifndef __NR_fanotify_mark
110# define __NR_fanotify_mark 301
111# endif
112#elif defined _MIPS_SIM
113# if _MIPS_SIM == _MIPS_SIM_ABI32
114# ifndef __NR_fanotify_init
115# define __NR_fanotify_init 4336
116# endif
117# ifndef __NR_fanotify_mark
118# define __NR_fanotify_mark 4337
119# endif
120# elif _MIPS_SIM == _MIPS_SIM_NABI32
121# ifndef __NR_fanotify_init
122# define __NR_fanotify_init 6300
123# endif
124# ifndef __NR_fanotify_mark
125# define __NR_fanotify_mark 6301
126# endif
127# elif _MIPS_SIM == _MIPS_SIM_ABI64
128# ifndef __NR_fanotify_init
129# define __NR_fanotify_init 5295
130# endif
131# ifndef __NR_fanotify_mark
132# define __NR_fanotify_mark 5296
133# endif
134# endif
22be093f 135#else
d59d0a2b 136# ifndef __NR_fanotify_init
137# define __NR_fanotify_init 338
138# endif
139# ifndef __NR_fanotify_mark
140# define __NR_fanotify_mark 339
141# endif
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142#endif
143
a8348796 144#ifndef HAVE_FANOTIFY_INIT
22be093f 145static inline int fanotify_init(unsigned int flags, unsigned int event_f_flags) {
05115020 146 return syscall(__NR_fanotify_init, flags, event_f_flags);
22be093f 147}
a8348796 148#endif
22be093f 149
a8348796 150#ifndef HAVE_FANOTIFY_MARK
05115020 151static inline int fanotify_mark(int fanotify_fd, unsigned int flags, uint64_t mask,
22be093f 152 int dfd, const char *pathname) {
28f30cf2 153#if defined _MIPS_SIM && _MIPS_SIM == _MIPS_SIM_ABI32 || defined __powerpc__ && !defined __powerpc64__ \
e9c1ea9d 154 || defined __arm__ && !defined __aarch64__
373c23b2 155 union {
156 uint64_t _64;
157 uint32_t _32[2];
158 } _mask;
159 _mask._64 = mask;
160
161 return syscall(__NR_fanotify_mark, fanotify_fd, flags,
162 _mask._32[0], _mask._32[1], dfd, pathname);
163#else
05115020 164 return syscall(__NR_fanotify_mark, fanotify_fd, flags, mask, dfd, pathname);
373c23b2 165#endif
22be093f 166}
a8348796 167#endif
22be093f 168
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169#ifndef BTRFS_IOCTL_MAGIC
170#define BTRFS_IOCTL_MAGIC 0x94
171#endif
172
173#ifndef BTRFS_PATH_NAME_MAX
174#define BTRFS_PATH_NAME_MAX 4087
175#endif
176
177#ifndef BTRFS_DEVICE_PATH_NAME_MAX
178#define BTRFS_DEVICE_PATH_NAME_MAX 1024
179#endif
180
181#ifndef BTRFS_FSID_SIZE
182#define BTRFS_FSID_SIZE 16
183#endif
184
185#ifndef BTRFS_UUID_SIZE
186#define BTRFS_UUID_SIZE 16
187#endif
188
189#ifndef HAVE_LINUX_BTRFS_H
190struct btrfs_ioctl_vol_args {
191 int64_t fd;
192 char name[BTRFS_PATH_NAME_MAX + 1];
193};
194
195struct btrfs_ioctl_dev_info_args {
196 uint64_t devid; /* in/out */
197 uint8_t uuid[BTRFS_UUID_SIZE]; /* in/out */
198 uint64_t bytes_used; /* out */
199 uint64_t total_bytes; /* out */
200 uint64_t unused[379]; /* pad to 4k */
201 char path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
202};
203
204struct btrfs_ioctl_fs_info_args {
205 uint64_t max_id; /* out */
206 uint64_t num_devices; /* out */
207 uint8_t fsid[BTRFS_FSID_SIZE]; /* out */
208 uint64_t reserved[124]; /* pad to 1k */
209};
210#endif
211
212#ifndef BTRFS_IOC_DEFRAG
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213#define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
214 struct btrfs_ioctl_vol_args)
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215#endif
216
217#ifndef BTRFS_IOC_DEV_INFO
218#define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
219 struct btrfs_ioctl_dev_info_args)
220#endif
221
222#ifndef BTRFS_IOC_FS_INFO
223#define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
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224 struct btrfs_ioctl_fs_info_args)
225#endif
226
227#ifndef BTRFS_IOC_DEVICES_READY
228#define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
229 struct btrfs_ioctl_vol_args)
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230#endif
231
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232#ifndef BTRFS_SUPER_MAGIC
233#define BTRFS_SUPER_MAGIC 0x9123683E
234#endif
235
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236#ifndef MS_MOVE
237#define MS_MOVE 8192
238#endif
239
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240#ifndef MS_PRIVATE
241#define MS_PRIVATE (1 << 18)
242#endif
243
a8348796 244#if !HAVE_DECL_GETTID
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245static inline pid_t gettid(void) {
246 return (pid_t) syscall(SYS_gettid);
247}
a8348796 248#endif
4d14be09 249
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250#ifndef SCM_SECURITY
251#define SCM_SECURITY 0x03
252#endif
253
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254#ifndef MS_STRICTATIME
255#define MS_STRICTATIME (1<<24)
256#endif
257
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258#ifndef MS_REC
259#define MS_REC 16384
260#endif
261
262#ifndef MS_SHARED
263#define MS_SHARED (1<<20)
264#endif
265
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266#ifndef PR_SET_NO_NEW_PRIVS
267#define PR_SET_NO_NEW_PRIVS 38
268#endif
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269
270#ifndef PR_SET_CHILD_SUBREAPER
271#define PR_SET_CHILD_SUBREAPER 36
272#endif
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273
274#ifndef MAX_HANDLE_SZ
275#define MAX_HANDLE_SZ 128
276#endif
277
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278#ifndef __NR_name_to_handle_at
279# if defined(__x86_64__)
848af055 280# define __NR_name_to_handle_at 303
66330455 281# elif defined(__i386__)
848af055 282# define __NR_name_to_handle_at 341
66330455 283# elif defined(__arm__)
f527b6b8 284# define __NR_name_to_handle_at 370
66330455 285# elif defined(__powerpc__)
f527b6b8 286# define __NR_name_to_handle_at 345
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287# else
288# error "__NR_name_to_handle_at is not defined"
f527b6b8 289# endif
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290#endif
291
9388e99e 292#if !HAVE_DECL_NAME_TO_HANDLE_AT
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293struct file_handle {
294 unsigned int handle_bytes;
295 int handle_type;
296 unsigned char f_handle[0];
297};
298
299static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
300 return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
301}
302#endif
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303
304#ifndef HAVE_SECURE_GETENV
305# ifdef HAVE___SECURE_GETENV
306# define secure_getenv __secure_getenv
307# else
66330455 308# error "neither secure_getenv nor __secure_getenv are available"
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309# endif
310#endif
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311
312#ifndef CIFS_MAGIC_NUMBER
65b3903f 313# define CIFS_MAGIC_NUMBER 0xFF534D42
85210bff 314#endif
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315
316#ifndef TFD_TIMER_CANCEL_ON_SET
65b3903f 317# define TFD_TIMER_CANCEL_ON_SET (1 << 1)
8742514c 318#endif
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319
320#ifndef SO_REUSEPORT
65b3903f 321# define SO_REUSEPORT 15
f7db7a69 322#endif
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323
324#ifndef EVIOCREVOKE
65b3903f 325# define EVIOCREVOKE _IOW('E', 0x91, int)
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326#endif
327
328#ifndef DRM_IOCTL_SET_MASTER
65b3903f 329# define DRM_IOCTL_SET_MASTER _IO('d', 0x1e)
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330#endif
331
332#ifndef DRM_IOCTL_DROP_MASTER
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333# define DRM_IOCTL_DROP_MASTER _IO('d', 0x1f)
334#endif
335
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336#if defined(__i386__) || defined(__x86_64__)
337
338/* The precise definition of __O_TMPFILE is arch specific, so let's
339 * just define this on x86 where we know the value. */
340
341#ifndef __O_TMPFILE
342#define __O_TMPFILE 020000000
343#endif
344
345/* a horrid kludge trying to make sure that this will fail on old kernels */
346#ifndef O_TMPFILE
347#define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
348#endif
349
350#endif
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351
352#ifndef __NR_setns
353# if defined(__x86_64__)
354# define __NR_setns 308
355# elif defined(__i386__)
356# define __NR_setns 346
357# else
358# error "__NR_setns is not defined"
359# endif
360#endif
361
362#if !HAVE_DECL_SETNS
363static inline int setns(int fd, int nstype) {
364 return syscall(__NR_setns, fd, nstype);
365}
366#endif
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367
368#if !HAVE_DECL_LO_FLAGS_PARTSCAN
369#define LO_FLAGS_PARTSCAN 8
370#endif
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371
372#ifndef LOOP_CTL_REMOVE
373#define LOOP_CTL_REMOVE 0x4C81
374#endif
375
376#ifndef LOOP_CTL_GET_FREE
377#define LOOP_CTL_GET_FREE 0x4C82
378#endif
0830ba61 379
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380#if !HAVE_DECL_IFLA_MACVLAN_FLAGS
381#define IFLA_MACVLAN_UNSPEC 0
382#define IFLA_MACVLAN_MODE 1
383#define IFLA_MACVLAN_FLAGS 2
384#define __IFLA_MACVLAN_MAX 3
385
386#define IFLA_MACVLAN_MAX (__IFLA_MACVLAN_MAX - 1)
387#endif
388
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389#if !HAVE_DECL_IFLA_VTI_REMOTE
390#define IFLA_VTI_UNSPEC 0
391#define IFLA_VTI_LINK 1
392#define IFLA_VTI_IKEY 2
393#define IFLA_VTI_OKEY 3
394#define IFLA_VTI_LOCAL 4
395#define IFLA_VTI_REMOTE 5
396#define __IFLA_VTI_MAX 6
397
398#define IFLA_VTI_MAX (__IFLA_VTI_MAX - 1)
399#endif
400
81577dc2
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401#if !HAVE_DECL_IFLA_PHYS_PORT_ID
402#undef IFLA_PROMISCUITY
403#define IFLA_PROMISCUITY 30
404#define IFLA_NUM_TX_QUEUES 31
405#define IFLA_NUM_RX_QUEUES 32
406#define IFLA_CARRIER 33
407#define IFLA_PHYS_PORT_ID 34
408#define __IFLA_MAX 35
409
410#define IFLA_MAX (__IFLA_MAX - 1)
411#endif
412
413#if !HAVE_DECL_IFLA_BOND_AD_INFO
414#define IFLA_BOND_UNSPEC 0
415#define IFLA_BOND_MODE 1
416#define IFLA_BOND_ACTIVE_SLAVE 2
417#define IFLA_BOND_MIIMON 3
418#define IFLA_BOND_UPDELAY 4
419#define IFLA_BOND_DOWNDELAY 5
420#define IFLA_BOND_USE_CARRIER 6
421#define IFLA_BOND_ARP_INTERVAL 7
422#define IFLA_BOND_ARP_IP_TARGET 8
423#define IFLA_BOND_ARP_VALIDATE 9
424#define IFLA_BOND_ARP_ALL_TARGETS 10
425#define IFLA_BOND_PRIMARY 11
426#define IFLA_BOND_PRIMARY_RESELECT 12
427#define IFLA_BOND_FAIL_OVER_MAC 13
428#define IFLA_BOND_XMIT_HASH_POLICY 14
429#define IFLA_BOND_RESEND_IGMP 15
430#define IFLA_BOND_NUM_PEER_NOTIF 16
431#define IFLA_BOND_ALL_SLAVES_ACTIVE 17
432#define IFLA_BOND_MIN_LINKS 18
433#define IFLA_BOND_LP_INTERVAL 19
434#define IFLA_BOND_PACKETS_PER_SLAVE 20
435#define IFLA_BOND_AD_LACP_RATE 21
436#define IFLA_BOND_AD_SELECT 22
437#define IFLA_BOND_AD_INFO 23
438#define __IFLA_BOND_MAX 24
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439
440#define IFLA_BOND_MAX (__IFLA_BOND_MAX - 1)
441#endif
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442
443#if !HAVE_DECL_IFLA_VLAN_PROTOCOL
444#define IFLA_VLAN_UNSPEC 0
445#define IFLA_VLAN_ID 1
446#define IFLA_VLAN_FLAGS 2
447#define IFLA_VLAN_EGRESS_QOS 3
448#define IFLA_VLAN_INGRESS_QOS 4
449#define IFLA_VLAN_PROTOCOL 5
450#define __IFLA_VLAN_MAX 6
451
452#define IFLA_VLAN_MAX (__IFLA_VLAN_MAX - 1)
453#endif
454
455#if !HAVE_DECL_IFLA_VXLAN_LOCAL6
456#define IFLA_VXLAN_UNSPEC 0
457#define IFLA_VXLAN_ID 1
458#define IFLA_VXLAN_GROUP 2
459#define IFLA_VXLAN_LINK 3
460#define IFLA_VXLAN_LOCAL 4
461#define IFLA_VXLAN_TTL 5
462#define IFLA_VXLAN_TOS 6
463#define IFLA_VXLAN_LEARNING 7
464#define IFLA_VXLAN_AGEING 8
465#define IFLA_VXLAN_LIMIT 9
466#define IFLA_VXLAN_PORT_RANGE 10
467#define IFLA_VXLAN_PROXY 11
468#define IFLA_VXLAN_RSC 12
469#define IFLA_VXLAN_L2MISS 13
470#define IFLA_VXLAN_L3MISS 14
471#define IFLA_VXLAN_PORT 15
472#define IFLA_VXLAN_GROUP6 16
473#define IFLA_VXLAN_LOCAL6 17
474#define __IFLA_VXLAN_MAX 18
475
476#define IFLA_VXLAN_MAX (__IFLA_VXLAN_MAX - 1)
477#endif
478
479#if !HAVE_DECL_IFLA_IPTUN_6RD_RELAY_PREFIXLEN
480#define IFLA_IPTUN_UNSPEC 0
481#define IFLA_IPTUN_LINK 1
482#define IFLA_IPTUN_LOCAL 2
483#define IFLA_IPTUN_REMOTE 3
484#define IFLA_IPTUN_TTL 4
485#define IFLA_IPTUN_TOS 5
486#define IFLA_IPTUN_ENCAP_LIMIT 6
487#define IFLA_IPTUN_FLOWINFO 7
488#define IFLA_IPTUN_FLAGS 8
489#define IFLA_IPTUN_PROTO 9
490#define IFLA_IPTUN_PMTUDISC 10
491#define IFLA_IPTUN_6RD_PREFIX 11
492#define IFLA_IPTUN_6RD_RELAY_PREFIX 12
493#define IFLA_IPTUN_6RD_PREFIXLEN 13
494#define IFLA_IPTUN_6RD_RELAY_PREFIXLEN 14
495#define __IFLA_IPTUN_MAX 15
496
497#define IFLA_IPTUN_MAX (__IFLA_IPTUN_MAX - 1)
498#endif
499
500#if !HAVE_DECL_IFLA_BRIDGE_VLAN_INFO
501#define IFLA_BRIDGE_FLAGS 0
502#define IFLA_BRIDGE_MODE 1
503#define IFLA_BRIDGE_VLAN_INFO 2
504#define __IFLA_BRIDGE_MAX 3
505
506#define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1)
507#endif
623a4c97
LP
508
509#ifndef IPV6_UNICAST_IF
510#define IPV6_UNICAST_IF 76
511#endif
ec2c5e43
LP
512
513#ifndef IFF_LOWER_UP
514#define IFF_LOWER_UP 0x10000
515#endif
516
517#ifndef IFF_DORMANT
518#define IFF_DORMANT 0x20000
519#endif
91988149
LP
520
521#ifndef BOND_XMIT_POLICY_ENCAP23
522#define BOND_XMIT_POLICY_ENCAP23 3
523#endif
524
525#ifndef BOND_XMIT_POLICY_ENCAP34
526#define BOND_XMIT_POLICY_ENCAP34 4
527#endif
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TG
528
529#ifndef NET_ADDR_RANDOM
530# define NET_ADDR_RANDOM 1
531#endif
532
533#ifndef NET_NAME_ENUM
534# define NET_NAME_ENUM 1
535#endif
536
537#ifndef NET_NAME_PREDICTABLE
538# define NET_NAME_PREDICTABLE 2
539#endif
540
541#ifndef NET_NAME_USER
542# define NET_NAME_USER 3
543#endif
544
545#ifndef NET_NAME_RENAMED
546# define NET_NAME_RENAMED 4
547#endif