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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __LINUX_RTNETLINK_H
2#define __LINUX_RTNETLINK_H
3
Jaswinder Singh Rajput541c94f2009-01-30 22:40:32 +05304#include <linux/types.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07005#include <linux/netlink.h>
YOSHIFUJI Hideakicbde1662006-09-27 22:40:19 -07006#include <linux/if_link.h>
Thomas Grafe07bca82006-12-07 23:49:45 -08007#include <linux/if_addr.h>
8#include <linux/neighbour.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07009
Patrick McHardy25239ce2010-04-26 16:02:05 +020010/* rtnetlink families. Values up to 127 are reserved for real address
11 * families, values above 128 may be used arbitrarily.
12 */
13#define RTNL_FAMILY_IPMR 128
Patrick McHardyd1db2752010-05-11 14:40:55 +020014#define RTNL_FAMILY_IP6MR 129
15#define RTNL_FAMILY_MAX 129
Patrick McHardy25239ce2010-04-26 16:02:05 +020016
Linus Torvalds1da177e2005-04-16 15:20:36 -070017/****
18 * Routing/neighbour discovery messages.
19 ****/
20
21/* Types of messages */
22
23enum {
24 RTM_BASE = 16,
25#define RTM_BASE RTM_BASE
26
27 RTM_NEWLINK = 16,
28#define RTM_NEWLINK RTM_NEWLINK
29 RTM_DELLINK,
30#define RTM_DELLINK RTM_DELLINK
31 RTM_GETLINK,
32#define RTM_GETLINK RTM_GETLINK
33 RTM_SETLINK,
34#define RTM_SETLINK RTM_SETLINK
35
36 RTM_NEWADDR = 20,
37#define RTM_NEWADDR RTM_NEWADDR
38 RTM_DELADDR,
39#define RTM_DELADDR RTM_DELADDR
40 RTM_GETADDR,
41#define RTM_GETADDR RTM_GETADDR
42
43 RTM_NEWROUTE = 24,
44#define RTM_NEWROUTE RTM_NEWROUTE
45 RTM_DELROUTE,
46#define RTM_DELROUTE RTM_DELROUTE
47 RTM_GETROUTE,
48#define RTM_GETROUTE RTM_GETROUTE
49
50 RTM_NEWNEIGH = 28,
51#define RTM_NEWNEIGH RTM_NEWNEIGH
52 RTM_DELNEIGH,
53#define RTM_DELNEIGH RTM_DELNEIGH
54 RTM_GETNEIGH,
55#define RTM_GETNEIGH RTM_GETNEIGH
56
57 RTM_NEWRULE = 32,
58#define RTM_NEWRULE RTM_NEWRULE
59 RTM_DELRULE,
60#define RTM_DELRULE RTM_DELRULE
61 RTM_GETRULE,
62#define RTM_GETRULE RTM_GETRULE
63
64 RTM_NEWQDISC = 36,
65#define RTM_NEWQDISC RTM_NEWQDISC
66 RTM_DELQDISC,
67#define RTM_DELQDISC RTM_DELQDISC
68 RTM_GETQDISC,
69#define RTM_GETQDISC RTM_GETQDISC
70
71 RTM_NEWTCLASS = 40,
72#define RTM_NEWTCLASS RTM_NEWTCLASS
73 RTM_DELTCLASS,
74#define RTM_DELTCLASS RTM_DELTCLASS
75 RTM_GETTCLASS,
76#define RTM_GETTCLASS RTM_GETTCLASS
77
78 RTM_NEWTFILTER = 44,
79#define RTM_NEWTFILTER RTM_NEWTFILTER
80 RTM_DELTFILTER,
81#define RTM_DELTFILTER RTM_DELTFILTER
82 RTM_GETTFILTER,
83#define RTM_GETTFILTER RTM_GETTFILTER
84
85 RTM_NEWACTION = 48,
86#define RTM_NEWACTION RTM_NEWACTION
87 RTM_DELACTION,
88#define RTM_DELACTION RTM_DELACTION
89 RTM_GETACTION,
90#define RTM_GETACTION RTM_GETACTION
91
92 RTM_NEWPREFIX = 52,
93#define RTM_NEWPREFIX RTM_NEWPREFIX
Linus Torvalds1da177e2005-04-16 15:20:36 -070094
95 RTM_GETMULTICAST = 58,
96#define RTM_GETMULTICAST RTM_GETMULTICAST
97
98 RTM_GETANYCAST = 62,
99#define RTM_GETANYCAST RTM_GETANYCAST
100
Thomas Grafc7fb64d2005-06-18 22:50:55 -0700101 RTM_NEWNEIGHTBL = 64,
102#define RTM_NEWNEIGHTBL RTM_NEWNEIGHTBL
103 RTM_GETNEIGHTBL = 66,
104#define RTM_GETNEIGHTBL RTM_GETNEIGHTBL
105 RTM_SETNEIGHTBL,
106#define RTM_SETNEIGHTBL RTM_SETNEIGHTBL
107
Pierre Ynard31910572007-10-10 21:22:05 -0700108 RTM_NEWNDUSEROPT = 68,
109#define RTM_NEWNDUSEROPT RTM_NEWNDUSEROPT
110
YOSHIFUJI Hideaki2a8cc6c2007-11-14 15:56:23 +0900111 RTM_NEWADDRLABEL = 72,
112#define RTM_NEWADDRLABEL RTM_NEWADDRLABEL
113 RTM_DELADDRLABEL,
Tushar Gohad5d5d9c92009-09-09 03:42:23 -0700114#define RTM_DELADDRLABEL RTM_DELADDRLABEL
YOSHIFUJI Hideaki2a8cc6c2007-11-14 15:56:23 +0900115 RTM_GETADDRLABEL,
116#define RTM_GETADDRLABEL RTM_GETADDRLABEL
117
Alexander Duyck2f90b862008-11-20 20:52:10 -0800118 RTM_GETDCB = 78,
119#define RTM_GETDCB RTM_GETDCB
120 RTM_SETDCB,
121#define RTM_SETDCB RTM_SETDCB
122
Thomas Grafd775fc02005-05-03 14:27:35 -0700123 __RTM_MAX,
124#define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125};
126
Thomas Grafdb46edc2005-05-03 14:29:39 -0700127#define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE)
128#define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2)
Thomas Graff90a0a72005-05-03 14:29:00 -0700129#define RTM_FAM(cmd) (((cmd) - RTM_BASE) >> 2)
130
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131/*
132 Generic structure for encapsulation of optional route information.
133 It is reminiscent of sockaddr, but with sa_family replaced
134 with attribute type.
135 */
136
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800137struct rtattr {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138 unsigned short rta_len;
139 unsigned short rta_type;
140};
141
142/* Macros to handle rtattributes */
143
144#define RTA_ALIGNTO 4
145#define RTA_ALIGN(len) ( ((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1) )
146#define RTA_OK(rta,len) ((len) >= (int)sizeof(struct rtattr) && \
147 (rta)->rta_len >= sizeof(struct rtattr) && \
148 (rta)->rta_len <= (len))
149#define RTA_NEXT(rta,attrlen) ((attrlen) -= RTA_ALIGN((rta)->rta_len), \
150 (struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len)))
151#define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len))
152#define RTA_SPACE(len) RTA_ALIGN(RTA_LENGTH(len))
153#define RTA_DATA(rta) ((void*)(((char*)(rta)) + RTA_LENGTH(0)))
154#define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0))
155
156
157
158
159/******************************************************************************
160 * Definitions used in routing table administration.
161 ****/
162
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800163struct rtmsg {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164 unsigned char rtm_family;
165 unsigned char rtm_dst_len;
166 unsigned char rtm_src_len;
167 unsigned char rtm_tos;
168
169 unsigned char rtm_table; /* Routing table id */
170 unsigned char rtm_protocol; /* Routing protocol; see below */
171 unsigned char rtm_scope; /* See below */
172 unsigned char rtm_type; /* See below */
173
174 unsigned rtm_flags;
175};
176
177/* rtm_type */
178
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800179enum {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 RTN_UNSPEC,
181 RTN_UNICAST, /* Gateway or direct route */
182 RTN_LOCAL, /* Accept locally */
183 RTN_BROADCAST, /* Accept locally as broadcast,
184 send as broadcast */
185 RTN_ANYCAST, /* Accept locally as broadcast,
186 but send as unicast */
187 RTN_MULTICAST, /* Multicast route */
188 RTN_BLACKHOLE, /* Drop */
189 RTN_UNREACHABLE, /* Destination is unreachable */
190 RTN_PROHIBIT, /* Administratively prohibited */
191 RTN_THROW, /* Not in this table */
192 RTN_NAT, /* Translate this address */
193 RTN_XRESOLVE, /* Use external resolver */
194 __RTN_MAX
195};
196
197#define RTN_MAX (__RTN_MAX - 1)
198
199
200/* rtm_protocol */
201
202#define RTPROT_UNSPEC 0
203#define RTPROT_REDIRECT 1 /* Route installed by ICMP redirects;
204 not used by current IPv4 */
205#define RTPROT_KERNEL 2 /* Route installed by kernel */
206#define RTPROT_BOOT 3 /* Route installed during boot */
207#define RTPROT_STATIC 4 /* Route installed by administrator */
208
209/* Values of protocol >= RTPROT_STATIC are not interpreted by kernel;
210 they are just passed from user and back as is.
211 It will be used by hypothetical multiple routing daemons.
212 Note that protocol values should be standardized in order to
213 avoid conflicts.
214 */
215
216#define RTPROT_GATED 8 /* Apparently, GateD */
217#define RTPROT_RA 9 /* RDISC/ND router advertisements */
218#define RTPROT_MRT 10 /* Merit MRT */
219#define RTPROT_ZEBRA 11 /* Zebra */
220#define RTPROT_BIRD 12 /* BIRD */
221#define RTPROT_DNROUTED 13 /* DECnet routing daemon */
222#define RTPROT_XORP 14 /* XORP */
Alpt99cae7f2006-03-20 22:26:17 -0800223#define RTPROT_NTK 15 /* Netsukuku */
Stephen Hemminger2e1ab632009-03-19 23:49:41 -0700224#define RTPROT_DHCP 16 /* DHCP client */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225
226/* rtm_scope
227
228 Really it is not scope, but sort of distance to the destination.
229 NOWHERE are reserved for not existing destinations, HOST is our
230 local addresses, LINK are destinations, located on directly attached
231 link and UNIVERSE is everywhere in the Universe.
232
233 Intermediate values are also possible f.e. interior routes
234 could be assigned a value between UNIVERSE and LINK.
235*/
236
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800237enum rt_scope_t {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 RT_SCOPE_UNIVERSE=0,
239/* User defined values */
240 RT_SCOPE_SITE=200,
241 RT_SCOPE_LINK=253,
242 RT_SCOPE_HOST=254,
243 RT_SCOPE_NOWHERE=255
244};
245
246/* rtm_flags */
247
248#define RTM_F_NOTIFY 0x100 /* Notify user of route change */
249#define RTM_F_CLONED 0x200 /* This route is cloned */
250#define RTM_F_EQUALIZE 0x400 /* Multipath equalizer: NI */
251#define RTM_F_PREFIX 0x800 /* Prefix addresses */
252
253/* Reserved table identifiers */
254
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800255enum rt_class_t {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256 RT_TABLE_UNSPEC=0,
257/* User defined values */
Krzysztof Piotr Oledzki709772e2008-06-10 15:44:49 -0700258 RT_TABLE_COMPAT=252,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 RT_TABLE_DEFAULT=253,
260 RT_TABLE_MAIN=254,
261 RT_TABLE_LOCAL=255,
Patrick McHardyb801f542006-08-10 23:12:34 -0700262 RT_TABLE_MAX=0xFFFFFFFF
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264
265
266/* Routing message attributes */
267
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800268enum rtattr_type_t {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 RTA_UNSPEC,
270 RTA_DST,
271 RTA_SRC,
272 RTA_IIF,
273 RTA_OIF,
274 RTA_GATEWAY,
275 RTA_PRIORITY,
276 RTA_PREFSRC,
277 RTA_METRICS,
278 RTA_MULTIPATH,
Thomas Graf1f9d11c2008-06-03 16:36:27 -0700279 RTA_PROTOINFO, /* no longer used */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280 RTA_FLOW,
281 RTA_CACHEINFO,
Thomas Graf1f9d11c2008-06-03 16:36:27 -0700282 RTA_SESSION, /* no longer used */
David S. Millere06e7c62007-06-10 17:22:39 -0700283 RTA_MP_ALGO, /* no longer used */
Patrick McHardy9e762a42006-08-10 23:09:48 -0700284 RTA_TABLE,
Eric Dumazet963bfee2010-07-20 22:03:14 +0000285 RTA_MARK,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 __RTA_MAX
287};
288
289#define RTA_MAX (__RTA_MAX - 1)
290
291#define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg))))
292#define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg))
293
294/* RTM_MULTIPATH --- array of struct rtnexthop.
295 *
296 * "struct rtnexthop" describes all necessary nexthop information,
297 * i.e. parameters of path to a destination via this nexthop.
298 *
299 * At the moment it is impossible to set different prefsrc, mtu, window
300 * and rtt for different paths from multipath.
301 */
302
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800303struct rtnexthop {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304 unsigned short rtnh_len;
305 unsigned char rtnh_flags;
306 unsigned char rtnh_hops;
307 int rtnh_ifindex;
308};
309
310/* rtnh_flags */
311
312#define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */
313#define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */
314#define RTNH_F_ONLINK 4 /* Gateway is forced on link */
315
316/* Macros to handle hexthops */
317
318#define RTNH_ALIGNTO 4
319#define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) )
320#define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \
321 ((int)(rtnh)->rtnh_len) <= (len))
322#define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len)))
323#define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len))
324#define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len))
325#define RTNH_DATA(rtnh) ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0)))
326
327/* RTM_CACHEINFO */
328
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800329struct rta_cacheinfo {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 __u32 rta_clntref;
331 __u32 rta_lastuse;
332 __s32 rta_expires;
333 __u32 rta_error;
334 __u32 rta_used;
335
336#define RTNETLINK_HAVE_PEERINFO 1
337 __u32 rta_id;
338 __u32 rta_ts;
339 __u32 rta_tsage;
340};
341
342/* RTM_METRICS --- array of struct rtattr with types of RTAX_* */
343
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800344enum {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 RTAX_UNSPEC,
346#define RTAX_UNSPEC RTAX_UNSPEC
347 RTAX_LOCK,
348#define RTAX_LOCK RTAX_LOCK
349 RTAX_MTU,
350#define RTAX_MTU RTAX_MTU
351 RTAX_WINDOW,
352#define RTAX_WINDOW RTAX_WINDOW
353 RTAX_RTT,
354#define RTAX_RTT RTAX_RTT
355 RTAX_RTTVAR,
356#define RTAX_RTTVAR RTAX_RTTVAR
357 RTAX_SSTHRESH,
358#define RTAX_SSTHRESH RTAX_SSTHRESH
359 RTAX_CWND,
360#define RTAX_CWND RTAX_CWND
361 RTAX_ADVMSS,
362#define RTAX_ADVMSS RTAX_ADVMSS
363 RTAX_REORDERING,
364#define RTAX_REORDERING RTAX_REORDERING
365 RTAX_HOPLIMIT,
366#define RTAX_HOPLIMIT RTAX_HOPLIMIT
367 RTAX_INITCWND,
368#define RTAX_INITCWND RTAX_INITCWND
369 RTAX_FEATURES,
370#define RTAX_FEATURES RTAX_FEATURES
David S. Miller05bb1fa2007-08-30 22:10:28 -0700371 RTAX_RTO_MIN,
372#define RTAX_RTO_MIN RTAX_RTO_MIN
laurent chavey31d12922009-12-15 11:15:28 +0000373 RTAX_INITRWND,
374#define RTAX_INITRWND RTAX_INITRWND
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 __RTAX_MAX
376};
377
378#define RTAX_MAX (__RTAX_MAX - 1)
379
380#define RTAX_FEATURE_ECN 0x00000001
David S. Millerbb5b7c12009-12-15 20:56:42 -0800381#define RTAX_FEATURE_SACK 0x00000002
382#define RTAX_FEATURE_TIMESTAMP 0x00000004
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383#define RTAX_FEATURE_ALLFRAG 0x00000008
384
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800385struct rta_session {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386 __u8 proto;
Patrick McHardy8a470772005-06-28 12:56:45 -0700387 __u8 pad1;
388 __u16 pad2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389
390 union {
391 struct {
392 __u16 sport;
393 __u16 dport;
394 } ports;
395
396 struct {
397 __u8 type;
398 __u8 code;
399 __u16 ident;
400 } icmpt;
401
402 __u32 spi;
403 } u;
404};
405
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406/****
407 * General form of address family dependent message.
408 ****/
409
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800410struct rtgenmsg {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 unsigned char rtgen_family;
412};
413
414/*****************************************************************
415 * Link layer specific messages.
416 ****/
417
418/* struct ifinfomsg
419 * passes link level specific information, not dependent
420 * on network protocol.
421 */
422
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800423struct ifinfomsg {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 unsigned char ifi_family;
425 unsigned char __ifi_pad;
426 unsigned short ifi_type; /* ARPHRD_* */
427 int ifi_index; /* Link index */
428 unsigned ifi_flags; /* IFF_* flags */
429 unsigned ifi_change; /* IFF_* change mask */
430};
431
432/********************************************************************
433 * prefix information
434 ****/
435
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800436struct prefixmsg {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 unsigned char prefix_family;
Patrick McHardy8a470772005-06-28 12:56:45 -0700438 unsigned char prefix_pad1;
439 unsigned short prefix_pad2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440 int prefix_ifindex;
441 unsigned char prefix_type;
442 unsigned char prefix_len;
443 unsigned char prefix_flags;
Patrick McHardy8a470772005-06-28 12:56:45 -0700444 unsigned char prefix_pad3;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445};
446
447enum
448{
449 PREFIX_UNSPEC,
450 PREFIX_ADDRESS,
451 PREFIX_CACHEINFO,
452 __PREFIX_MAX
453};
454
455#define PREFIX_MAX (__PREFIX_MAX - 1)
456
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800457struct prefix_cacheinfo {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458 __u32 preferred_time;
459 __u32 valid_time;
460};
461
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462
463/*****************************************************************
464 * Traffic control messages.
465 ****/
466
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800467struct tcmsg {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468 unsigned char tcm_family;
469 unsigned char tcm__pad1;
470 unsigned short tcm__pad2;
471 int tcm_ifindex;
472 __u32 tcm_handle;
473 __u32 tcm_parent;
474 __u32 tcm_info;
475};
476
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800477enum {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478 TCA_UNSPEC,
479 TCA_KIND,
480 TCA_OPTIONS,
481 TCA_STATS,
482 TCA_XSTATS,
483 TCA_RATE,
484 TCA_FCNT,
485 TCA_STATS2,
Jussi Kivilinna175f9c12008-07-20 00:08:47 -0700486 TCA_STAB,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487 __TCA_MAX
488};
489
490#define TCA_MAX (__TCA_MAX - 1)
491
492#define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg))))
493#define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg))
494
Pierre Ynard31910572007-10-10 21:22:05 -0700495/********************************************************************
496 * Neighbor Discovery userland options
497 ****/
498
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800499struct nduseroptmsg {
Pierre Ynard31910572007-10-10 21:22:05 -0700500 unsigned char nduseropt_family;
501 unsigned char nduseropt_pad1;
502 unsigned short nduseropt_opts_len; /* Total length of options */
Pierre Ynarddbb2ed22007-11-12 17:58:35 -0800503 int nduseropt_ifindex;
Pierre Ynard31910572007-10-10 21:22:05 -0700504 __u8 nduseropt_icmp_type;
505 __u8 nduseropt_icmp_code;
506 unsigned short nduseropt_pad2;
Pierre Ynarddbb2ed22007-11-12 17:58:35 -0800507 unsigned int nduseropt_pad3;
Pierre Ynard31910572007-10-10 21:22:05 -0700508 /* Followed by one or more ND options */
509};
510
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800511enum {
Pierre Ynard31910572007-10-10 21:22:05 -0700512 NDUSEROPT_UNSPEC,
513 NDUSEROPT_SRCADDR,
514 __NDUSEROPT_MAX
515};
516
517#define NDUSEROPT_MAX (__NDUSEROPT_MAX - 1)
518
Patrick McHardyac6d4392005-08-14 19:29:52 -0700519#ifndef __KERNEL__
520/* RTnetlink multicast groups - backwards compatibility for userspace */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521#define RTMGRP_LINK 1
522#define RTMGRP_NOTIFY 2
523#define RTMGRP_NEIGH 4
524#define RTMGRP_TC 8
525
526#define RTMGRP_IPV4_IFADDR 0x10
527#define RTMGRP_IPV4_MROUTE 0x20
528#define RTMGRP_IPV4_ROUTE 0x40
Patrick McHardya5cdc032006-03-23 01:16:06 -0800529#define RTMGRP_IPV4_RULE 0x80
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530
531#define RTMGRP_IPV6_IFADDR 0x100
532#define RTMGRP_IPV6_MROUTE 0x200
533#define RTMGRP_IPV6_ROUTE 0x400
534#define RTMGRP_IPV6_IFINFO 0x800
535
536#define RTMGRP_DECnet_IFADDR 0x1000
537#define RTMGRP_DECnet_ROUTE 0x4000
538
539#define RTMGRP_IPV6_PREFIX 0x20000
Patrick McHardyac6d4392005-08-14 19:29:52 -0700540#endif
541
542/* RTnetlink multicast groups */
543enum rtnetlink_groups {
544 RTNLGRP_NONE,
545#define RTNLGRP_NONE RTNLGRP_NONE
546 RTNLGRP_LINK,
547#define RTNLGRP_LINK RTNLGRP_LINK
548 RTNLGRP_NOTIFY,
549#define RTNLGRP_NOTIFY RTNLGRP_NOTIFY
550 RTNLGRP_NEIGH,
551#define RTNLGRP_NEIGH RTNLGRP_NEIGH
552 RTNLGRP_TC,
553#define RTNLGRP_TC RTNLGRP_TC
554 RTNLGRP_IPV4_IFADDR,
555#define RTNLGRP_IPV4_IFADDR RTNLGRP_IPV4_IFADDR
556 RTNLGRP_IPV4_MROUTE,
557#define RTNLGRP_IPV4_MROUTE RTNLGRP_IPV4_MROUTE
558 RTNLGRP_IPV4_ROUTE,
559#define RTNLGRP_IPV4_ROUTE RTNLGRP_IPV4_ROUTE
Patrick McHardya5cdc032006-03-23 01:16:06 -0800560 RTNLGRP_IPV4_RULE,
561#define RTNLGRP_IPV4_RULE RTNLGRP_IPV4_RULE
Patrick McHardyac6d4392005-08-14 19:29:52 -0700562 RTNLGRP_IPV6_IFADDR,
563#define RTNLGRP_IPV6_IFADDR RTNLGRP_IPV6_IFADDR
564 RTNLGRP_IPV6_MROUTE,
565#define RTNLGRP_IPV6_MROUTE RTNLGRP_IPV6_MROUTE
566 RTNLGRP_IPV6_ROUTE,
567#define RTNLGRP_IPV6_ROUTE RTNLGRP_IPV6_ROUTE
568 RTNLGRP_IPV6_IFINFO,
569#define RTNLGRP_IPV6_IFINFO RTNLGRP_IPV6_IFINFO
570 RTNLGRP_DECnet_IFADDR,
571#define RTNLGRP_DECnet_IFADDR RTNLGRP_DECnet_IFADDR
Kristian Slavov6b80ebe2005-12-19 13:54:44 -0800572 RTNLGRP_NOP2,
Patrick McHardyac6d4392005-08-14 19:29:52 -0700573 RTNLGRP_DECnet_ROUTE,
574#define RTNLGRP_DECnet_ROUTE RTNLGRP_DECnet_ROUTE
Steven Whitehousea8731cb2006-08-09 15:56:46 -0700575 RTNLGRP_DECnet_RULE,
576#define RTNLGRP_DECnet_RULE RTNLGRP_DECnet_RULE
Kristian Slavov6b80ebe2005-12-19 13:54:44 -0800577 RTNLGRP_NOP4,
Patrick McHardyac6d4392005-08-14 19:29:52 -0700578 RTNLGRP_IPV6_PREFIX,
579#define RTNLGRP_IPV6_PREFIX RTNLGRP_IPV6_PREFIX
Thomas Graf101367c2006-08-04 03:39:02 -0700580 RTNLGRP_IPV6_RULE,
581#define RTNLGRP_IPV6_RULE RTNLGRP_IPV6_RULE
Pierre Ynard31910572007-10-10 21:22:05 -0700582 RTNLGRP_ND_USEROPT,
583#define RTNLGRP_ND_USEROPT RTNLGRP_ND_USEROPT
Remi Denis-Courmontbce7b152008-09-22 19:51:15 -0700584 RTNLGRP_PHONET_IFADDR,
585#define RTNLGRP_PHONET_IFADDR RTNLGRP_PHONET_IFADDR
586 RTNLGRP_PHONET_ROUTE,
587#define RTNLGRP_PHONET_ROUTE RTNLGRP_PHONET_ROUTE
John Fastabend314b4772011-06-21 07:34:37 +0000588 RTNLGRP_DCB,
589#define RTNLGRP_DCB RTNLGRP_DCB
Patrick McHardyac6d4392005-08-14 19:29:52 -0700590 __RTNLGRP_MAX
591};
592#define RTNLGRP_MAX (__RTNLGRP_MAX - 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593
594/* TC action piece */
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800595struct tcamsg {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596 unsigned char tca_family;
597 unsigned char tca__pad1;
598 unsigned short tca__pad2;
599};
600#define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg))))
601#define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg))
602#define TCA_ACT_TAB 1 /* attr type must be >=1 */
603#define TCAA_MAX 1
604
605/* End of information exported to user level */
606
607#ifdef __KERNEL__
608
Stephen Hemminger6756ae42006-03-20 22:23:58 -0800609#include <linux/mutex.h>
Andy Whitcroft3b42a962010-11-15 06:01:59 +0000610#include <linux/netdevice.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
613{
614 int len = strlen(str) + 1;
615 return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len);
616}
617
Denis V. Lunev97c53ca2007-11-19 22:26:51 -0800618extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo);
619extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid);
Pablo Neira Ayuso1ce85fe2009-02-24 23:18:28 -0800620extern void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid,
621 u32 group, struct nlmsghdr *nlh, gfp_t flags);
Denis V. Lunev97c53ca2007-11-19 22:26:51 -0800622extern void rtnl_set_sk_err(struct net *net, u32 group, int error);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
Thomas Grafe3703b32006-11-27 09:27:07 -0800624extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
625 u32 id, u32 ts, u32 tsage, long expires,
626 u32 error);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627
628extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data);
629
630#define RTA_PUT(skb, attrtype, attrlen, data) \
631({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
632 goto rtattr_failure; \
633 __rta_fill(skb, attrtype, attrlen, data); })
634
Thomas Grafd675c982005-06-23 21:00:58 -0700635#define RTA_APPEND(skb, attrlen, data) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \
637 goto rtattr_failure; \
Thomas Grafd675c982005-06-23 21:00:58 -0700638 memcpy(skb_put(skb, attrlen), data, attrlen); })
639
640#define RTA_PUT_NOHDR(skb, attrlen, data) \
Patrick McHardyb3563c42005-06-28 12:54:43 -0700641({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \
Arnaldo Carvalho de Melo27a884d2007-04-19 20:29:13 -0700642 memset(skb_tail_pointer(skb) - (RTA_ALIGN(attrlen) - attrlen), 0, \
Patrick McHardyb3563c42005-06-28 12:54:43 -0700643 RTA_ALIGN(attrlen) - attrlen); })
Thomas Graf00768242005-06-18 22:50:38 -0700644
Thomas Graf8f48bcd2005-06-18 22:52:36 -0700645#define RTA_PUT_U8(skb, attrtype, value) \
646({ u8 _tmp = (value); \
647 RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); })
648
649#define RTA_PUT_U16(skb, attrtype, value) \
650({ u16 _tmp = (value); \
651 RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); })
652
Thomas Graf00768242005-06-18 22:50:38 -0700653#define RTA_PUT_U32(skb, attrtype, value) \
654({ u32 _tmp = (value); \
655 RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); })
656
657#define RTA_PUT_U64(skb, attrtype, value) \
658({ u64 _tmp = (value); \
659 RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); })
660
661#define RTA_PUT_SECS(skb, attrtype, value) \
662 RTA_PUT_U64(skb, attrtype, (value) / HZ)
663
664#define RTA_PUT_MSECS(skb, attrtype, value) \
665 RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value))
666
667#define RTA_PUT_STRING(skb, attrtype, value) \
668 RTA_PUT(skb, attrtype, strlen(value) + 1, value)
669
Thomas Graf8f48bcd2005-06-18 22:52:36 -0700670#define RTA_PUT_FLAG(skb, attrtype) \
671 RTA_PUT(skb, attrtype, 0, NULL);
672
Thomas Graf00768242005-06-18 22:50:38 -0700673#define RTA_NEST(skb, type) \
Arnaldo Carvalho de Melo27a884d2007-04-19 20:29:13 -0700674({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
Thomas Graf00768242005-06-18 22:50:38 -0700675 RTA_PUT(skb, type, 0, NULL); \
676 __start; })
677
678#define RTA_NEST_END(skb, start) \
Arnaldo Carvalho de Melo27a884d2007-04-19 20:29:13 -0700679({ (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
Thomas Graf00768242005-06-18 22:50:38 -0700680 (skb)->len; })
681
Patrick McHardyafdc3232007-06-25 14:30:16 -0700682#define RTA_NEST_COMPAT(skb, type, attrlen, data) \
683({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
684 RTA_PUT(skb, type, attrlen, data); \
685 RTA_NEST(skb, type); \
686 __start; })
687
688#define RTA_NEST_COMPAT_END(skb, start) \
689({ struct rtattr *__nest = (void *)(start) + NLMSG_ALIGN((start)->rta_len); \
690 (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
691 RTA_NEST_END(skb, __nest); \
692 (skb)->len; })
693
Thomas Graf00768242005-06-18 22:50:38 -0700694#define RTA_NEST_CANCEL(skb, start) \
Thomas Grafc52a3f82005-06-18 22:51:26 -0700695({ if (start) \
696 skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
Thomas Graf00768242005-06-18 22:50:38 -0700697 -1; })
698
Thomas Graf8f48bcd2005-06-18 22:52:36 -0700699#define RTA_GET_U8(rta) \
700({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \
701 goto rtattr_failure; \
702 *(u8 *) RTA_DATA(rta); })
703
704#define RTA_GET_U16(rta) \
705({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \
706 goto rtattr_failure; \
707 *(u16 *) RTA_DATA(rta); })
708
Thomas Graf00768242005-06-18 22:50:38 -0700709#define RTA_GET_U32(rta) \
710({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \
711 goto rtattr_failure; \
712 *(u32 *) RTA_DATA(rta); })
713
714#define RTA_GET_U64(rta) \
715({ u64 _tmp; \
716 if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \
717 goto rtattr_failure; \
718 memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \
719 _tmp; })
720
Thomas Graf8f48bcd2005-06-18 22:52:36 -0700721#define RTA_GET_FLAG(rta) (!!(rta))
722
Thomas Graf00768242005-06-18 22:50:38 -0700723#define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ)
724#define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725
726static inline struct rtattr *
727__rta_reserve(struct sk_buff *skb, int attrtype, int attrlen)
728{
729 struct rtattr *rta;
730 int size = RTA_LENGTH(attrlen);
731
732 rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
733 rta->rta_type = attrtype;
734 rta->rta_len = size;
Patrick McHardyb3563c42005-06-28 12:54:43 -0700735 memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736 return rta;
737}
738
739#define __RTA_PUT(skb, attrtype, attrlen) \
740({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
741 goto rtattr_failure; \
742 __rta_reserve(skb, attrtype, attrlen); })
743
744extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
745
Stephen Hemminger6756ae42006-03-20 22:23:58 -0800746/* RTNL is used as a global lock for all changes to network configuration */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747extern void rtnl_lock(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700748extern void rtnl_unlock(void);
Stephen Hemminger6756ae42006-03-20 22:23:58 -0800749extern int rtnl_trylock(void);
Patrick McHardyc9c10142008-04-23 22:10:48 -0700750extern int rtnl_is_locked(void);
Paul E. McKenneya898def2010-02-22 17:04:49 -0800751#ifdef CONFIG_PROVE_LOCKING
752extern int lockdep_rtnl_is_held(void);
753#endif /* #ifdef CONFIG_PROVE_LOCKING */
Stephen Hemminger6756ae42006-03-20 22:23:58 -0800754
Eric Dumazeta6e0fc82010-09-08 14:15:32 -0700755/**
756 * rcu_dereference_rtnl - rcu_dereference with debug checking
757 * @p: The pointer to read, prior to dereferencing
758 *
759 * Do an rcu_dereference(p), but check caller either holds rcu_read_lock()
David S. Miller29fa0602010-10-05 00:29:48 -0700760 * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference()
Eric Dumazeta6e0fc82010-09-08 14:15:32 -0700761 */
762#define rcu_dereference_rtnl(p) \
Michal Hockod8bf4ca2011-07-08 14:39:41 +0200763 rcu_dereference_check(p, lockdep_rtnl_is_held())
Eric Dumazeta6e0fc82010-09-08 14:15:32 -0700764
Eric Dumazet7dff59e2010-09-15 11:07:15 +0000765/**
David S. Miller29fa0602010-10-05 00:29:48 -0700766 * rtnl_dereference - fetch RCU pointer when updates are prevented by RTNL
Eric Dumazet7dff59e2010-09-15 11:07:15 +0000767 * @p: The pointer to read, prior to dereferencing
768 *
David S. Miller29fa0602010-10-05 00:29:48 -0700769 * Return the value of the specified RCU-protected pointer, but omit
770 * both the smp_read_barrier_depends() and the ACCESS_ONCE(), because
771 * caller holds RTNL.
Eric Dumazet7dff59e2010-09-15 11:07:15 +0000772 */
773#define rtnl_dereference(p) \
David S. Miller29fa0602010-10-05 00:29:48 -0700774 rcu_dereference_protected(p, lockdep_rtnl_is_held())
Eric Dumazet7dff59e2010-09-15 11:07:15 +0000775
Eric Dumazet24824a02010-10-02 06:11:55 +0000776static inline struct netdev_queue *dev_ingress_queue(struct net_device *dev)
777{
778 return rtnl_dereference(dev->ingress_queue);
779}
780
781extern struct netdev_queue *dev_ingress_queue_create(struct net_device *dev);
782
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783extern void rtnetlink_init(void);
Stephen Hemminger6756ae42006-03-20 22:23:58 -0800784extern void __rtnl_unlock(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700785
786#define ASSERT_RTNL() do { \
Patrick McHardyc9c10142008-04-23 22:10:48 -0700787 if (unlikely(!rtnl_is_locked())) { \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700788 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
789 __FILE__, __LINE__); \
790 dump_stack(); \
791 } \
792} while(0)
793
Patrick McHardy9e762a42006-08-10 23:09:48 -0700794static inline u32 rtm_get_table(struct rtattr **rta, u8 table)
795{
796 return RTA_GET_U32(rta[RTA_TABLE-1]);
797rtattr_failure:
798 return table;
799}
800
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801#endif /* __KERNEL__ */
802
803
804#endif /* __LINUX_RTNETLINK_H */