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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __LINUX_RTNETLINK_H
2#define __LINUX_RTNETLINK_H
3
4#include <linux/netlink.h>
YOSHIFUJI Hideakicbde1662006-09-27 22:40:19 -07005#include <linux/if_link.h>
Thomas Grafe07bca82006-12-07 23:49:45 -08006#include <linux/if_addr.h>
7#include <linux/neighbour.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07008
9/****
10 * Routing/neighbour discovery messages.
11 ****/
12
13/* Types of messages */
14
15enum {
16 RTM_BASE = 16,
17#define RTM_BASE RTM_BASE
18
19 RTM_NEWLINK = 16,
20#define RTM_NEWLINK RTM_NEWLINK
21 RTM_DELLINK,
22#define RTM_DELLINK RTM_DELLINK
23 RTM_GETLINK,
24#define RTM_GETLINK RTM_GETLINK
25 RTM_SETLINK,
26#define RTM_SETLINK RTM_SETLINK
27
28 RTM_NEWADDR = 20,
29#define RTM_NEWADDR RTM_NEWADDR
30 RTM_DELADDR,
31#define RTM_DELADDR RTM_DELADDR
32 RTM_GETADDR,
33#define RTM_GETADDR RTM_GETADDR
34
35 RTM_NEWROUTE = 24,
36#define RTM_NEWROUTE RTM_NEWROUTE
37 RTM_DELROUTE,
38#define RTM_DELROUTE RTM_DELROUTE
39 RTM_GETROUTE,
40#define RTM_GETROUTE RTM_GETROUTE
41
42 RTM_NEWNEIGH = 28,
43#define RTM_NEWNEIGH RTM_NEWNEIGH
44 RTM_DELNEIGH,
45#define RTM_DELNEIGH RTM_DELNEIGH
46 RTM_GETNEIGH,
47#define RTM_GETNEIGH RTM_GETNEIGH
48
49 RTM_NEWRULE = 32,
50#define RTM_NEWRULE RTM_NEWRULE
51 RTM_DELRULE,
52#define RTM_DELRULE RTM_DELRULE
53 RTM_GETRULE,
54#define RTM_GETRULE RTM_GETRULE
55
56 RTM_NEWQDISC = 36,
57#define RTM_NEWQDISC RTM_NEWQDISC
58 RTM_DELQDISC,
59#define RTM_DELQDISC RTM_DELQDISC
60 RTM_GETQDISC,
61#define RTM_GETQDISC RTM_GETQDISC
62
63 RTM_NEWTCLASS = 40,
64#define RTM_NEWTCLASS RTM_NEWTCLASS
65 RTM_DELTCLASS,
66#define RTM_DELTCLASS RTM_DELTCLASS
67 RTM_GETTCLASS,
68#define RTM_GETTCLASS RTM_GETTCLASS
69
70 RTM_NEWTFILTER = 44,
71#define RTM_NEWTFILTER RTM_NEWTFILTER
72 RTM_DELTFILTER,
73#define RTM_DELTFILTER RTM_DELTFILTER
74 RTM_GETTFILTER,
75#define RTM_GETTFILTER RTM_GETTFILTER
76
77 RTM_NEWACTION = 48,
78#define RTM_NEWACTION RTM_NEWACTION
79 RTM_DELACTION,
80#define RTM_DELACTION RTM_DELACTION
81 RTM_GETACTION,
82#define RTM_GETACTION RTM_GETACTION
83
84 RTM_NEWPREFIX = 52,
85#define RTM_NEWPREFIX RTM_NEWPREFIX
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
87 RTM_GETMULTICAST = 58,
88#define RTM_GETMULTICAST RTM_GETMULTICAST
89
90 RTM_GETANYCAST = 62,
91#define RTM_GETANYCAST RTM_GETANYCAST
92
Thomas Grafc7fb64d2005-06-18 22:50:55 -070093 RTM_NEWNEIGHTBL = 64,
94#define RTM_NEWNEIGHTBL RTM_NEWNEIGHTBL
95 RTM_GETNEIGHTBL = 66,
96#define RTM_GETNEIGHTBL RTM_GETNEIGHTBL
97 RTM_SETNEIGHTBL,
98#define RTM_SETNEIGHTBL RTM_SETNEIGHTBL
99
Pierre Ynard31910572007-10-10 21:22:05 -0700100 RTM_NEWNDUSEROPT = 68,
101#define RTM_NEWNDUSEROPT RTM_NEWNDUSEROPT
102
YOSHIFUJI Hideaki2a8cc6c2007-11-14 15:56:23 +0900103 RTM_NEWADDRLABEL = 72,
104#define RTM_NEWADDRLABEL RTM_NEWADDRLABEL
105 RTM_DELADDRLABEL,
106#define RTM_NEWADDRLABEL RTM_NEWADDRLABEL
107 RTM_GETADDRLABEL,
108#define RTM_GETADDRLABEL RTM_GETADDRLABEL
109
Thomas Grafd775fc02005-05-03 14:27:35 -0700110 __RTM_MAX,
111#define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112};
113
Thomas Grafdb46edc2005-05-03 14:29:39 -0700114#define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE)
115#define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2)
Thomas Graff90a0a72005-05-03 14:29:00 -0700116#define RTM_FAM(cmd) (((cmd) - RTM_BASE) >> 2)
117
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118/*
119 Generic structure for encapsulation of optional route information.
120 It is reminiscent of sockaddr, but with sa_family replaced
121 with attribute type.
122 */
123
124struct rtattr
125{
126 unsigned short rta_len;
127 unsigned short rta_type;
128};
129
130/* Macros to handle rtattributes */
131
132#define RTA_ALIGNTO 4
133#define RTA_ALIGN(len) ( ((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1) )
134#define RTA_OK(rta,len) ((len) >= (int)sizeof(struct rtattr) && \
135 (rta)->rta_len >= sizeof(struct rtattr) && \
136 (rta)->rta_len <= (len))
137#define RTA_NEXT(rta,attrlen) ((attrlen) -= RTA_ALIGN((rta)->rta_len), \
138 (struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len)))
139#define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len))
140#define RTA_SPACE(len) RTA_ALIGN(RTA_LENGTH(len))
141#define RTA_DATA(rta) ((void*)(((char*)(rta)) + RTA_LENGTH(0)))
142#define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0))
143
144
145
146
147/******************************************************************************
148 * Definitions used in routing table administration.
149 ****/
150
151struct rtmsg
152{
153 unsigned char rtm_family;
154 unsigned char rtm_dst_len;
155 unsigned char rtm_src_len;
156 unsigned char rtm_tos;
157
158 unsigned char rtm_table; /* Routing table id */
159 unsigned char rtm_protocol; /* Routing protocol; see below */
160 unsigned char rtm_scope; /* See below */
161 unsigned char rtm_type; /* See below */
162
163 unsigned rtm_flags;
164};
165
166/* rtm_type */
167
168enum
169{
170 RTN_UNSPEC,
171 RTN_UNICAST, /* Gateway or direct route */
172 RTN_LOCAL, /* Accept locally */
173 RTN_BROADCAST, /* Accept locally as broadcast,
174 send as broadcast */
175 RTN_ANYCAST, /* Accept locally as broadcast,
176 but send as unicast */
177 RTN_MULTICAST, /* Multicast route */
178 RTN_BLACKHOLE, /* Drop */
179 RTN_UNREACHABLE, /* Destination is unreachable */
180 RTN_PROHIBIT, /* Administratively prohibited */
181 RTN_THROW, /* Not in this table */
182 RTN_NAT, /* Translate this address */
183 RTN_XRESOLVE, /* Use external resolver */
184 __RTN_MAX
185};
186
187#define RTN_MAX (__RTN_MAX - 1)
188
189
190/* rtm_protocol */
191
192#define RTPROT_UNSPEC 0
193#define RTPROT_REDIRECT 1 /* Route installed by ICMP redirects;
194 not used by current IPv4 */
195#define RTPROT_KERNEL 2 /* Route installed by kernel */
196#define RTPROT_BOOT 3 /* Route installed during boot */
197#define RTPROT_STATIC 4 /* Route installed by administrator */
198
199/* Values of protocol >= RTPROT_STATIC are not interpreted by kernel;
200 they are just passed from user and back as is.
201 It will be used by hypothetical multiple routing daemons.
202 Note that protocol values should be standardized in order to
203 avoid conflicts.
204 */
205
206#define RTPROT_GATED 8 /* Apparently, GateD */
207#define RTPROT_RA 9 /* RDISC/ND router advertisements */
208#define RTPROT_MRT 10 /* Merit MRT */
209#define RTPROT_ZEBRA 11 /* Zebra */
210#define RTPROT_BIRD 12 /* BIRD */
211#define RTPROT_DNROUTED 13 /* DECnet routing daemon */
212#define RTPROT_XORP 14 /* XORP */
Alpt99cae7f2006-03-20 22:26:17 -0800213#define RTPROT_NTK 15 /* Netsukuku */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214
215/* rtm_scope
216
217 Really it is not scope, but sort of distance to the destination.
218 NOWHERE are reserved for not existing destinations, HOST is our
219 local addresses, LINK are destinations, located on directly attached
220 link and UNIVERSE is everywhere in the Universe.
221
222 Intermediate values are also possible f.e. interior routes
223 could be assigned a value between UNIVERSE and LINK.
224*/
225
226enum rt_scope_t
227{
228 RT_SCOPE_UNIVERSE=0,
229/* User defined values */
230 RT_SCOPE_SITE=200,
231 RT_SCOPE_LINK=253,
232 RT_SCOPE_HOST=254,
233 RT_SCOPE_NOWHERE=255
234};
235
236/* rtm_flags */
237
238#define RTM_F_NOTIFY 0x100 /* Notify user of route change */
239#define RTM_F_CLONED 0x200 /* This route is cloned */
240#define RTM_F_EQUALIZE 0x400 /* Multipath equalizer: NI */
241#define RTM_F_PREFIX 0x800 /* Prefix addresses */
242
243/* Reserved table identifiers */
244
245enum rt_class_t
246{
247 RT_TABLE_UNSPEC=0,
248/* User defined values */
249 RT_TABLE_DEFAULT=253,
250 RT_TABLE_MAIN=254,
251 RT_TABLE_LOCAL=255,
Patrick McHardyb801f542006-08-10 23:12:34 -0700252 RT_TABLE_MAX=0xFFFFFFFF
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254
255
256/* Routing message attributes */
257
258enum rtattr_type_t
259{
260 RTA_UNSPEC,
261 RTA_DST,
262 RTA_SRC,
263 RTA_IIF,
264 RTA_OIF,
265 RTA_GATEWAY,
266 RTA_PRIORITY,
267 RTA_PREFSRC,
268 RTA_METRICS,
269 RTA_MULTIPATH,
270 RTA_PROTOINFO,
271 RTA_FLOW,
272 RTA_CACHEINFO,
273 RTA_SESSION,
David S. Millere06e7c62007-06-10 17:22:39 -0700274 RTA_MP_ALGO, /* no longer used */
Patrick McHardy9e762a42006-08-10 23:09:48 -0700275 RTA_TABLE,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 __RTA_MAX
277};
278
279#define RTA_MAX (__RTA_MAX - 1)
280
281#define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg))))
282#define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg))
283
284/* RTM_MULTIPATH --- array of struct rtnexthop.
285 *
286 * "struct rtnexthop" describes all necessary nexthop information,
287 * i.e. parameters of path to a destination via this nexthop.
288 *
289 * At the moment it is impossible to set different prefsrc, mtu, window
290 * and rtt for different paths from multipath.
291 */
292
293struct rtnexthop
294{
295 unsigned short rtnh_len;
296 unsigned char rtnh_flags;
297 unsigned char rtnh_hops;
298 int rtnh_ifindex;
299};
300
301/* rtnh_flags */
302
303#define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */
304#define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */
305#define RTNH_F_ONLINK 4 /* Gateway is forced on link */
306
307/* Macros to handle hexthops */
308
309#define RTNH_ALIGNTO 4
310#define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) )
311#define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \
312 ((int)(rtnh)->rtnh_len) <= (len))
313#define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len)))
314#define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len))
315#define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len))
316#define RTNH_DATA(rtnh) ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0)))
317
318/* RTM_CACHEINFO */
319
320struct rta_cacheinfo
321{
322 __u32 rta_clntref;
323 __u32 rta_lastuse;
324 __s32 rta_expires;
325 __u32 rta_error;
326 __u32 rta_used;
327
328#define RTNETLINK_HAVE_PEERINFO 1
329 __u32 rta_id;
330 __u32 rta_ts;
331 __u32 rta_tsage;
332};
333
334/* RTM_METRICS --- array of struct rtattr with types of RTAX_* */
335
336enum
337{
338 RTAX_UNSPEC,
339#define RTAX_UNSPEC RTAX_UNSPEC
340 RTAX_LOCK,
341#define RTAX_LOCK RTAX_LOCK
342 RTAX_MTU,
343#define RTAX_MTU RTAX_MTU
344 RTAX_WINDOW,
345#define RTAX_WINDOW RTAX_WINDOW
346 RTAX_RTT,
347#define RTAX_RTT RTAX_RTT
348 RTAX_RTTVAR,
349#define RTAX_RTTVAR RTAX_RTTVAR
350 RTAX_SSTHRESH,
351#define RTAX_SSTHRESH RTAX_SSTHRESH
352 RTAX_CWND,
353#define RTAX_CWND RTAX_CWND
354 RTAX_ADVMSS,
355#define RTAX_ADVMSS RTAX_ADVMSS
356 RTAX_REORDERING,
357#define RTAX_REORDERING RTAX_REORDERING
358 RTAX_HOPLIMIT,
359#define RTAX_HOPLIMIT RTAX_HOPLIMIT
360 RTAX_INITCWND,
361#define RTAX_INITCWND RTAX_INITCWND
362 RTAX_FEATURES,
363#define RTAX_FEATURES RTAX_FEATURES
David S. Miller05bb1fa2007-08-30 22:10:28 -0700364 RTAX_RTO_MIN,
365#define RTAX_RTO_MIN RTAX_RTO_MIN
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366 __RTAX_MAX
367};
368
369#define RTAX_MAX (__RTAX_MAX - 1)
370
371#define RTAX_FEATURE_ECN 0x00000001
372#define RTAX_FEATURE_SACK 0x00000002
373#define RTAX_FEATURE_TIMESTAMP 0x00000004
374#define RTAX_FEATURE_ALLFRAG 0x00000008
375
376struct rta_session
377{
378 __u8 proto;
Patrick McHardy8a470772005-06-28 12:56:45 -0700379 __u8 pad1;
380 __u16 pad2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381
382 union {
383 struct {
384 __u16 sport;
385 __u16 dport;
386 } ports;
387
388 struct {
389 __u8 type;
390 __u8 code;
391 __u16 ident;
392 } icmpt;
393
394 __u32 spi;
395 } u;
396};
397
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398/****
399 * General form of address family dependent message.
400 ****/
401
402struct rtgenmsg
403{
404 unsigned char rtgen_family;
405};
406
407/*****************************************************************
408 * Link layer specific messages.
409 ****/
410
411/* struct ifinfomsg
412 * passes link level specific information, not dependent
413 * on network protocol.
414 */
415
416struct ifinfomsg
417{
418 unsigned char ifi_family;
419 unsigned char __ifi_pad;
420 unsigned short ifi_type; /* ARPHRD_* */
421 int ifi_index; /* Link index */
422 unsigned ifi_flags; /* IFF_* flags */
423 unsigned ifi_change; /* IFF_* change mask */
424};
425
426/********************************************************************
427 * prefix information
428 ****/
429
430struct prefixmsg
431{
432 unsigned char prefix_family;
Patrick McHardy8a470772005-06-28 12:56:45 -0700433 unsigned char prefix_pad1;
434 unsigned short prefix_pad2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435 int prefix_ifindex;
436 unsigned char prefix_type;
437 unsigned char prefix_len;
438 unsigned char prefix_flags;
Patrick McHardy8a470772005-06-28 12:56:45 -0700439 unsigned char prefix_pad3;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440};
441
442enum
443{
444 PREFIX_UNSPEC,
445 PREFIX_ADDRESS,
446 PREFIX_CACHEINFO,
447 __PREFIX_MAX
448};
449
450#define PREFIX_MAX (__PREFIX_MAX - 1)
451
452struct prefix_cacheinfo
453{
454 __u32 preferred_time;
455 __u32 valid_time;
456};
457
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458
459/*****************************************************************
460 * Traffic control messages.
461 ****/
462
463struct tcmsg
464{
465 unsigned char tcm_family;
466 unsigned char tcm__pad1;
467 unsigned short tcm__pad2;
468 int tcm_ifindex;
469 __u32 tcm_handle;
470 __u32 tcm_parent;
471 __u32 tcm_info;
472};
473
474enum
475{
476 TCA_UNSPEC,
477 TCA_KIND,
478 TCA_OPTIONS,
479 TCA_STATS,
480 TCA_XSTATS,
481 TCA_RATE,
482 TCA_FCNT,
483 TCA_STATS2,
484 __TCA_MAX
485};
486
487#define TCA_MAX (__TCA_MAX - 1)
488
489#define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg))))
490#define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg))
491
Pierre Ynard31910572007-10-10 21:22:05 -0700492/********************************************************************
493 * Neighbor Discovery userland options
494 ****/
495
496struct nduseroptmsg
497{
498 unsigned char nduseropt_family;
499 unsigned char nduseropt_pad1;
500 unsigned short nduseropt_opts_len; /* Total length of options */
Pierre Ynarddbb2ed22007-11-12 17:58:35 -0800501 int nduseropt_ifindex;
Pierre Ynard31910572007-10-10 21:22:05 -0700502 __u8 nduseropt_icmp_type;
503 __u8 nduseropt_icmp_code;
504 unsigned short nduseropt_pad2;
Pierre Ynarddbb2ed22007-11-12 17:58:35 -0800505 unsigned int nduseropt_pad3;
Pierre Ynard31910572007-10-10 21:22:05 -0700506 /* Followed by one or more ND options */
507};
508
509enum
510{
511 NDUSEROPT_UNSPEC,
512 NDUSEROPT_SRCADDR,
513 __NDUSEROPT_MAX
514};
515
516#define NDUSEROPT_MAX (__NDUSEROPT_MAX - 1)
517
Patrick McHardyac6d4392005-08-14 19:29:52 -0700518#ifndef __KERNEL__
519/* RTnetlink multicast groups - backwards compatibility for userspace */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520#define RTMGRP_LINK 1
521#define RTMGRP_NOTIFY 2
522#define RTMGRP_NEIGH 4
523#define RTMGRP_TC 8
524
525#define RTMGRP_IPV4_IFADDR 0x10
526#define RTMGRP_IPV4_MROUTE 0x20
527#define RTMGRP_IPV4_ROUTE 0x40
Patrick McHardya5cdc032006-03-23 01:16:06 -0800528#define RTMGRP_IPV4_RULE 0x80
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529
530#define RTMGRP_IPV6_IFADDR 0x100
531#define RTMGRP_IPV6_MROUTE 0x200
532#define RTMGRP_IPV6_ROUTE 0x400
533#define RTMGRP_IPV6_IFINFO 0x800
534
535#define RTMGRP_DECnet_IFADDR 0x1000
536#define RTMGRP_DECnet_ROUTE 0x4000
537
538#define RTMGRP_IPV6_PREFIX 0x20000
Patrick McHardyac6d4392005-08-14 19:29:52 -0700539#endif
540
541/* RTnetlink multicast groups */
542enum rtnetlink_groups {
543 RTNLGRP_NONE,
544#define RTNLGRP_NONE RTNLGRP_NONE
545 RTNLGRP_LINK,
546#define RTNLGRP_LINK RTNLGRP_LINK
547 RTNLGRP_NOTIFY,
548#define RTNLGRP_NOTIFY RTNLGRP_NOTIFY
549 RTNLGRP_NEIGH,
550#define RTNLGRP_NEIGH RTNLGRP_NEIGH
551 RTNLGRP_TC,
552#define RTNLGRP_TC RTNLGRP_TC
553 RTNLGRP_IPV4_IFADDR,
554#define RTNLGRP_IPV4_IFADDR RTNLGRP_IPV4_IFADDR
555 RTNLGRP_IPV4_MROUTE,
556#define RTNLGRP_IPV4_MROUTE RTNLGRP_IPV4_MROUTE
557 RTNLGRP_IPV4_ROUTE,
558#define RTNLGRP_IPV4_ROUTE RTNLGRP_IPV4_ROUTE
Patrick McHardya5cdc032006-03-23 01:16:06 -0800559 RTNLGRP_IPV4_RULE,
560#define RTNLGRP_IPV4_RULE RTNLGRP_IPV4_RULE
Patrick McHardyac6d4392005-08-14 19:29:52 -0700561 RTNLGRP_IPV6_IFADDR,
562#define RTNLGRP_IPV6_IFADDR RTNLGRP_IPV6_IFADDR
563 RTNLGRP_IPV6_MROUTE,
564#define RTNLGRP_IPV6_MROUTE RTNLGRP_IPV6_MROUTE
565 RTNLGRP_IPV6_ROUTE,
566#define RTNLGRP_IPV6_ROUTE RTNLGRP_IPV6_ROUTE
567 RTNLGRP_IPV6_IFINFO,
568#define RTNLGRP_IPV6_IFINFO RTNLGRP_IPV6_IFINFO
569 RTNLGRP_DECnet_IFADDR,
570#define RTNLGRP_DECnet_IFADDR RTNLGRP_DECnet_IFADDR
Kristian Slavov6b80ebe2005-12-19 13:54:44 -0800571 RTNLGRP_NOP2,
Patrick McHardyac6d4392005-08-14 19:29:52 -0700572 RTNLGRP_DECnet_ROUTE,
573#define RTNLGRP_DECnet_ROUTE RTNLGRP_DECnet_ROUTE
Steven Whitehousea8731cb2006-08-09 15:56:46 -0700574 RTNLGRP_DECnet_RULE,
575#define RTNLGRP_DECnet_RULE RTNLGRP_DECnet_RULE
Kristian Slavov6b80ebe2005-12-19 13:54:44 -0800576 RTNLGRP_NOP4,
Patrick McHardyac6d4392005-08-14 19:29:52 -0700577 RTNLGRP_IPV6_PREFIX,
578#define RTNLGRP_IPV6_PREFIX RTNLGRP_IPV6_PREFIX
Thomas Graf101367c2006-08-04 03:39:02 -0700579 RTNLGRP_IPV6_RULE,
580#define RTNLGRP_IPV6_RULE RTNLGRP_IPV6_RULE
Pierre Ynard31910572007-10-10 21:22:05 -0700581 RTNLGRP_ND_USEROPT,
582#define RTNLGRP_ND_USEROPT RTNLGRP_ND_USEROPT
Patrick McHardyac6d4392005-08-14 19:29:52 -0700583 __RTNLGRP_MAX
584};
585#define RTNLGRP_MAX (__RTNLGRP_MAX - 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586
587/* TC action piece */
588struct tcamsg
589{
590 unsigned char tca_family;
591 unsigned char tca__pad1;
592 unsigned short tca__pad2;
593};
594#define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg))))
595#define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg))
596#define TCA_ACT_TAB 1 /* attr type must be >=1 */
597#define TCAA_MAX 1
598
599/* End of information exported to user level */
600
601#ifdef __KERNEL__
602
Stephen Hemminger6756ae42006-03-20 22:23:58 -0800603#include <linux/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700604
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
606{
607 int len = strlen(str) + 1;
608 return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len);
609}
610
Denis V. Lunev97c53ca2007-11-19 22:26:51 -0800611extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo);
612extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid);
613extern int rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group,
Thomas Graf97676b62006-08-15 00:31:41 -0700614 struct nlmsghdr *nlh, gfp_t flags);
Denis V. Lunev97c53ca2007-11-19 22:26:51 -0800615extern void rtnl_set_sk_err(struct net *net, u32 group, int error);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
Thomas Grafe3703b32006-11-27 09:27:07 -0800617extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
618 u32 id, u32 ts, u32 tsage, long expires,
619 u32 error);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620
621extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data);
622
623#define RTA_PUT(skb, attrtype, attrlen, data) \
624({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
625 goto rtattr_failure; \
626 __rta_fill(skb, attrtype, attrlen, data); })
627
Thomas Grafd675c982005-06-23 21:00:58 -0700628#define RTA_APPEND(skb, attrlen, data) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \
630 goto rtattr_failure; \
Thomas Grafd675c982005-06-23 21:00:58 -0700631 memcpy(skb_put(skb, attrlen), data, attrlen); })
632
633#define RTA_PUT_NOHDR(skb, attrlen, data) \
Patrick McHardyb3563c42005-06-28 12:54:43 -0700634({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \
Arnaldo Carvalho de Melo27a884d2007-04-19 20:29:13 -0700635 memset(skb_tail_pointer(skb) - (RTA_ALIGN(attrlen) - attrlen), 0, \
Patrick McHardyb3563c42005-06-28 12:54:43 -0700636 RTA_ALIGN(attrlen) - attrlen); })
Thomas Graf00768242005-06-18 22:50:38 -0700637
Thomas Graf8f48bcd2005-06-18 22:52:36 -0700638#define RTA_PUT_U8(skb, attrtype, value) \
639({ u8 _tmp = (value); \
640 RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); })
641
642#define RTA_PUT_U16(skb, attrtype, value) \
643({ u16 _tmp = (value); \
644 RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); })
645
Thomas Graf00768242005-06-18 22:50:38 -0700646#define RTA_PUT_U32(skb, attrtype, value) \
647({ u32 _tmp = (value); \
648 RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); })
649
650#define RTA_PUT_U64(skb, attrtype, value) \
651({ u64 _tmp = (value); \
652 RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); })
653
654#define RTA_PUT_SECS(skb, attrtype, value) \
655 RTA_PUT_U64(skb, attrtype, (value) / HZ)
656
657#define RTA_PUT_MSECS(skb, attrtype, value) \
658 RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value))
659
660#define RTA_PUT_STRING(skb, attrtype, value) \
661 RTA_PUT(skb, attrtype, strlen(value) + 1, value)
662
Thomas Graf8f48bcd2005-06-18 22:52:36 -0700663#define RTA_PUT_FLAG(skb, attrtype) \
664 RTA_PUT(skb, attrtype, 0, NULL);
665
Thomas Graf00768242005-06-18 22:50:38 -0700666#define RTA_NEST(skb, type) \
Arnaldo Carvalho de Melo27a884d2007-04-19 20:29:13 -0700667({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
Thomas Graf00768242005-06-18 22:50:38 -0700668 RTA_PUT(skb, type, 0, NULL); \
669 __start; })
670
671#define RTA_NEST_END(skb, start) \
Arnaldo Carvalho de Melo27a884d2007-04-19 20:29:13 -0700672({ (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
Thomas Graf00768242005-06-18 22:50:38 -0700673 (skb)->len; })
674
Patrick McHardyafdc3232007-06-25 14:30:16 -0700675#define RTA_NEST_COMPAT(skb, type, attrlen, data) \
676({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
677 RTA_PUT(skb, type, attrlen, data); \
678 RTA_NEST(skb, type); \
679 __start; })
680
681#define RTA_NEST_COMPAT_END(skb, start) \
682({ struct rtattr *__nest = (void *)(start) + NLMSG_ALIGN((start)->rta_len); \
683 (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
684 RTA_NEST_END(skb, __nest); \
685 (skb)->len; })
686
Thomas Graf00768242005-06-18 22:50:38 -0700687#define RTA_NEST_CANCEL(skb, start) \
Thomas Grafc52a3f82005-06-18 22:51:26 -0700688({ if (start) \
689 skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
Thomas Graf00768242005-06-18 22:50:38 -0700690 -1; })
691
Thomas Graf8f48bcd2005-06-18 22:52:36 -0700692#define RTA_GET_U8(rta) \
693({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \
694 goto rtattr_failure; \
695 *(u8 *) RTA_DATA(rta); })
696
697#define RTA_GET_U16(rta) \
698({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \
699 goto rtattr_failure; \
700 *(u16 *) RTA_DATA(rta); })
701
Thomas Graf00768242005-06-18 22:50:38 -0700702#define RTA_GET_U32(rta) \
703({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \
704 goto rtattr_failure; \
705 *(u32 *) RTA_DATA(rta); })
706
707#define RTA_GET_U64(rta) \
708({ u64 _tmp; \
709 if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \
710 goto rtattr_failure; \
711 memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \
712 _tmp; })
713
Thomas Graf8f48bcd2005-06-18 22:52:36 -0700714#define RTA_GET_FLAG(rta) (!!(rta))
715
Thomas Graf00768242005-06-18 22:50:38 -0700716#define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ)
717#define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718
719static inline struct rtattr *
720__rta_reserve(struct sk_buff *skb, int attrtype, int attrlen)
721{
722 struct rtattr *rta;
723 int size = RTA_LENGTH(attrlen);
724
725 rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
726 rta->rta_type = attrtype;
727 rta->rta_len = size;
Patrick McHardyb3563c42005-06-28 12:54:43 -0700728 memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729 return rta;
730}
731
732#define __RTA_PUT(skb, attrtype, attrlen) \
733({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
734 goto rtattr_failure; \
735 __rta_reserve(skb, attrtype, attrlen); })
736
737extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
738
Stephen Hemminger6756ae42006-03-20 22:23:58 -0800739/* RTNL is used as a global lock for all changes to network configuration */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740extern void rtnl_lock(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741extern void rtnl_unlock(void);
Stephen Hemminger6756ae42006-03-20 22:23:58 -0800742extern int rtnl_trylock(void);
Patrick McHardyc9c10142008-04-23 22:10:48 -0700743extern int rtnl_is_locked(void);
Stephen Hemminger6756ae42006-03-20 22:23:58 -0800744
Linus Torvalds1da177e2005-04-16 15:20:36 -0700745extern void rtnetlink_init(void);
Stephen Hemminger6756ae42006-03-20 22:23:58 -0800746extern void __rtnl_unlock(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747
748#define ASSERT_RTNL() do { \
Patrick McHardyc9c10142008-04-23 22:10:48 -0700749 if (unlikely(!rtnl_is_locked())) { \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700750 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
751 __FILE__, __LINE__); \
752 dump_stack(); \
753 } \
754} while(0)
755
756#define BUG_TRAP(x) do { \
757 if (unlikely(!(x))) { \
758 printk(KERN_ERR "KERNEL: assertion (%s) failed at %s (%d)\n", \
759 #x, __FILE__ , __LINE__); \
760 } \
761} while(0)
762
Patrick McHardy9e762a42006-08-10 23:09:48 -0700763static inline u32 rtm_get_table(struct rtattr **rta, u8 table)
764{
765 return RTA_GET_U32(rta[RTA_TABLE-1]);
766rtattr_failure:
767 return table;
768}
769
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770#endif /* __KERNEL__ */
771
772
773#endif /* __LINUX_RTNETLINK_H */