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ipv6: ip6mr: support multiple tables
[net-next-2.6.git] / include / linux / rtnetlink.h
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1da177e4
LT		 1#ifndef __LINUX_RTNETLINK_H
2#define __LINUX_RTNETLINK_H
3
541c94f1 4#include <linux/types.h>
1da177e4 5#include <linux/netlink.h>
cbde1668 6#include <linux/if_link.h>
e07bca84
TG		 7#include <linux/if_addr.h>
8#include <linux/neighbour.h>
1da177e4 9
25239cee
PM		 10/* 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
d1db275d
PM		 14#define RTNL_FAMILY_IP6MR 129
15#define RTNL_FAMILY_MAX 129
25239cee 16
1da177e4
LT		 17/****
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
1da177e4
LT		 94
95 RTM_GETMULTICAST = 58,
96#define RTM_GETMULTICAST RTM_GETMULTICAST
97
98 RTM_GETANYCAST = 62,
99#define RTM_GETANYCAST RTM_GETANYCAST
100
c7fb64db
TG		 101 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
31910575
PY		 108 RTM_NEWNDUSEROPT = 68,
109#define RTM_NEWNDUSEROPT RTM_NEWNDUSEROPT
110
2a8cc6c8
YH		 111 RTM_NEWADDRLABEL = 72,
112#define RTM_NEWADDRLABEL RTM_NEWADDRLABEL
113 RTM_DELADDRLABEL,
5d5d9c97 114#define RTM_DELADDRLABEL RTM_DELADDRLABEL
2a8cc6c8
YH		 115 RTM_GETADDRLABEL,
116#define RTM_GETADDRLABEL RTM_GETADDRLABEL
117
2f90b865
AD		 118 RTM_GETDCB = 78,
119#define RTM_GETDCB RTM_GETDCB
120 RTM_SETDCB,
121#define RTM_SETDCB RTM_SETDCB
122
d775fc09
TG		 123 __RTM_MAX,
124#define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1)
1da177e4
LT		 125};
126
db46edc6
TG		 127#define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE)
128#define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2)
f90a0a74
TG		 129#define RTM_FAM(cmd) (((cmd) - RTM_BASE) >> 2)
130
1da177e4
LT		 131/*
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
d94d9fee 137struct rtattr {
1da177e4
LT		 138 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
d94d9fee 163struct rtmsg {
1da177e4
LT		 164 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
d94d9fee 179enum {
1da177e4
LT		 180 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 */
99cae7fc 223#define RTPROT_NTK 15 /* Netsukuku */
2e1ab634 224#define RTPROT_DHCP 16 /* DHCP client */
1da177e4
LT		 225
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
d94d9fee 237enum rt_scope_t {
1da177e4
LT		 238 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
d94d9fee 255enum rt_class_t {
1da177e4
LT		 256 RT_TABLE_UNSPEC=0,
257/* User defined values */
709772e6 258 RT_TABLE_COMPAT=252,
1da177e4
LT		 259 RT_TABLE_DEFAULT=253,
260 RT_TABLE_MAIN=254,
261 RT_TABLE_LOCAL=255,
b801f549 262 RT_TABLE_MAX=0xFFFFFFFF
1da177e4 263};
1da177e4
LT		 264
265
266/* Routing message attributes */
267
d94d9fee 268enum rtattr_type_t {
1da177e4
LT		 269 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,
1f9d11c7 279 RTA_PROTOINFO, /* no longer used */
1da177e4
LT		 280 RTA_FLOW,
281 RTA_CACHEINFO,
1f9d11c7 282 RTA_SESSION, /* no longer used */
e06e7c61 283 RTA_MP_ALGO, /* no longer used */
9e762a4a 284 RTA_TABLE,
1da177e4
LT		 285 __RTA_MAX
286};
287
288#define RTA_MAX (__RTA_MAX - 1)
289
290#define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg))))
291#define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg))
292
293/* RTM_MULTIPATH --- array of struct rtnexthop.
294 *
295 * "struct rtnexthop" describes all necessary nexthop information,
296 * i.e. parameters of path to a destination via this nexthop.
297 *
298 * At the moment it is impossible to set different prefsrc, mtu, window
299 * and rtt for different paths from multipath.
300 */
301
d94d9fee 302struct rtnexthop {
1da177e4
LT		 303 unsigned short rtnh_len;
304 unsigned char rtnh_flags;
305 unsigned char rtnh_hops;
306 int rtnh_ifindex;
307};
308
309/* rtnh_flags */
310
311#define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */
312#define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */
313#define RTNH_F_ONLINK 4 /* Gateway is forced on link */
314
315/* Macros to handle hexthops */
316
317#define RTNH_ALIGNTO 4
318#define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) )
319#define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \
320 ((int)(rtnh)->rtnh_len) <= (len))
321#define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len)))
322#define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len))
323#define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len))
324#define RTNH_DATA(rtnh) ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0)))
325
326/* RTM_CACHEINFO */
327
d94d9fee 328struct rta_cacheinfo {
1da177e4
LT		 329 __u32 rta_clntref;
330 __u32 rta_lastuse;
331 __s32 rta_expires;
332 __u32 rta_error;
333 __u32 rta_used;
334
335#define RTNETLINK_HAVE_PEERINFO 1
336 __u32 rta_id;
337 __u32 rta_ts;
338 __u32 rta_tsage;
339};
340
341/* RTM_METRICS --- array of struct rtattr with types of RTAX_* */
342
d94d9fee 343enum {
1da177e4
LT		 344 RTAX_UNSPEC,
345#define RTAX_UNSPEC RTAX_UNSPEC
346 RTAX_LOCK,
347#define RTAX_LOCK RTAX_LOCK
348 RTAX_MTU,
349#define RTAX_MTU RTAX_MTU
350 RTAX_WINDOW,
351#define RTAX_WINDOW RTAX_WINDOW
352 RTAX_RTT,
353#define RTAX_RTT RTAX_RTT
354 RTAX_RTTVAR,
355#define RTAX_RTTVAR RTAX_RTTVAR
356 RTAX_SSTHRESH,
357#define RTAX_SSTHRESH RTAX_SSTHRESH
358 RTAX_CWND,
359#define RTAX_CWND RTAX_CWND
360 RTAX_ADVMSS,
361#define RTAX_ADVMSS RTAX_ADVMSS
362 RTAX_REORDERING,
363#define RTAX_REORDERING RTAX_REORDERING
364 RTAX_HOPLIMIT,
365#define RTAX_HOPLIMIT RTAX_HOPLIMIT
366 RTAX_INITCWND,
367#define RTAX_INITCWND RTAX_INITCWND
368 RTAX_FEATURES,
369#define RTAX_FEATURES RTAX_FEATURES
05bb1fad
DM		 370 RTAX_RTO_MIN,
371#define RTAX_RTO_MIN RTAX_RTO_MIN
31d12926 372 RTAX_INITRWND,
373#define RTAX_INITRWND RTAX_INITRWND
1da177e4
LT		 374 __RTAX_MAX
375};
376
377#define RTAX_MAX (__RTAX_MAX - 1)
378
379#define RTAX_FEATURE_ECN 0x00000001
bb5b7c11
DM		 380#define RTAX_FEATURE_SACK 0x00000002
381#define RTAX_FEATURE_TIMESTAMP 0x00000004
1da177e4
LT		 382#define RTAX_FEATURE_ALLFRAG 0x00000008
383
d94d9fee 384struct rta_session {
1da177e4 385 __u8 proto;
8a47077a
PM		 386 __u8 pad1;
387 __u16 pad2;
1da177e4
LT		 388
389 union {
390 struct {
391 __u16 sport;
392 __u16 dport;
393 } ports;
394
395 struct {
396 __u8 type;
397 __u8 code;
398 __u16 ident;
399 } icmpt;
400
401 __u32 spi;
402 } u;
403};
404
1da177e4
LT		 405/****
406 * General form of address family dependent message.
407 ****/
408
d94d9fee 409struct rtgenmsg {
1da177e4
LT		 410 unsigned char rtgen_family;
411};
412
413/*****************************************************************
414 * Link layer specific messages.
415 ****/
416
417/* struct ifinfomsg
418 * passes link level specific information, not dependent
419 * on network protocol.
420 */
421
d94d9fee 422struct ifinfomsg {
1da177e4
LT		 423 unsigned char ifi_family;
424 unsigned char __ifi_pad;
425 unsigned short ifi_type; /* ARPHRD_* */
426 int ifi_index; /* Link index */
427 unsigned ifi_flags; /* IFF_* flags */
428 unsigned ifi_change; /* IFF_* change mask */
429};
430
431/********************************************************************
432 * prefix information
433 ****/
434
d94d9fee 435struct prefixmsg {
1da177e4 436 unsigned char prefix_family;
8a47077a
PM		 437 unsigned char prefix_pad1;
438 unsigned short prefix_pad2;
1da177e4
LT		 439 int prefix_ifindex;
440 unsigned char prefix_type;
441 unsigned char prefix_len;
442 unsigned char prefix_flags;
8a47077a 443 unsigned char prefix_pad3;
1da177e4
LT		 444};
445
446enum
447{
448 PREFIX_UNSPEC,
449 PREFIX_ADDRESS,
450 PREFIX_CACHEINFO,
451 __PREFIX_MAX
452};
453
454#define PREFIX_MAX (__PREFIX_MAX - 1)
455
d94d9fee 456struct prefix_cacheinfo {
1da177e4
LT		 457 __u32 preferred_time;
458 __u32 valid_time;
459};
460
1da177e4
LT		 461
462/*****************************************************************
463 * Traffic control messages.
464 ****/
465
d94d9fee 466struct tcmsg {
1da177e4
LT		 467 unsigned char tcm_family;
468 unsigned char tcm__pad1;
469 unsigned short tcm__pad2;
470 int tcm_ifindex;
471 __u32 tcm_handle;
472 __u32 tcm_parent;
473 __u32 tcm_info;
474};
475
d94d9fee 476enum {
1da177e4
LT		 477 TCA_UNSPEC,
478 TCA_KIND,
479 TCA_OPTIONS,
480 TCA_STATS,
481 TCA_XSTATS,
482 TCA_RATE,
483 TCA_FCNT,
484 TCA_STATS2,
175f9c1b 485 TCA_STAB,
1da177e4
LT		 486 __TCA_MAX
487};
488
489#define TCA_MAX (__TCA_MAX - 1)
490
491#define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg))))
492#define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg))
493
31910575
PY		 494/********************************************************************
495 * Neighbor Discovery userland options
496 ****/
497
d94d9fee 498struct nduseroptmsg {
31910575
PY		 499 unsigned char nduseropt_family;
500 unsigned char nduseropt_pad1;
501 unsigned short nduseropt_opts_len; /* Total length of options */
dbb2ed24 502 int nduseropt_ifindex;
31910575
PY		 503 __u8 nduseropt_icmp_type;
504 __u8 nduseropt_icmp_code;
505 unsigned short nduseropt_pad2;
dbb2ed24 506 unsigned int nduseropt_pad3;
31910575
PY		 507 /* Followed by one or more ND options */
508};
509
d94d9fee 510enum {
31910575
PY		 511 NDUSEROPT_UNSPEC,
512 NDUSEROPT_SRCADDR,
513 __NDUSEROPT_MAX
514};
515
516#define NDUSEROPT_MAX (__NDUSEROPT_MAX - 1)
517
ac6d439d
PM		 518#ifndef __KERNEL__
519/* RTnetlink multicast groups - backwards compatibility for userspace */
1da177e4
LT		 520#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
a5cdc030 528#define RTMGRP_IPV4_RULE 0x80
1da177e4
LT		 529
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
ac6d439d
PM		 539#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
a5cdc030
PM		 559 RTNLGRP_IPV4_RULE,
560#define RTNLGRP_IPV4_RULE RTNLGRP_IPV4_RULE
ac6d439d
PM		 561 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
6b80ebed 571 RTNLGRP_NOP2,
ac6d439d
PM		 572 RTNLGRP_DECnet_ROUTE,
573#define RTNLGRP_DECnet_ROUTE RTNLGRP_DECnet_ROUTE
a8731cbf
SW		 574 RTNLGRP_DECnet_RULE,
575#define RTNLGRP_DECnet_RULE RTNLGRP_DECnet_RULE
6b80ebed 576 RTNLGRP_NOP4,
ac6d439d
PM		 577 RTNLGRP_IPV6_PREFIX,
578#define RTNLGRP_IPV6_PREFIX RTNLGRP_IPV6_PREFIX
101367c2
TG		 579 RTNLGRP_IPV6_RULE,
580#define RTNLGRP_IPV6_RULE RTNLGRP_IPV6_RULE
31910575
PY		 581 RTNLGRP_ND_USEROPT,
582#define RTNLGRP_ND_USEROPT RTNLGRP_ND_USEROPT
bce7b154
RDC		 583 RTNLGRP_PHONET_IFADDR,
584#define RTNLGRP_PHONET_IFADDR RTNLGRP_PHONET_IFADDR
585 RTNLGRP_PHONET_ROUTE,
586#define RTNLGRP_PHONET_ROUTE RTNLGRP_PHONET_ROUTE
ac6d439d
PM		 587 __RTNLGRP_MAX
588};
589#define RTNLGRP_MAX (__RTNLGRP_MAX - 1)
1da177e4
LT		 590
591/* TC action piece */
d94d9fee 592struct tcamsg {
1da177e4
LT		 593 unsigned char tca_family;
594 unsigned char tca__pad1;
595 unsigned short tca__pad2;
596};
597#define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg))))
598#define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg))
599#define TCA_ACT_TAB 1 /* attr type must be >=1 */
600#define TCAA_MAX 1
601
602/* End of information exported to user level */
603
604#ifdef __KERNEL__
605
6756ae4b 606#include <linux/mutex.h>
1da177e4 607
1da177e4
LT		 608static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
609{
610 int len = strlen(str) + 1;
611 return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len);
612}
613
97c53cac
DL		 614extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo);
615extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid);
1ce85fe4
PNA		 616extern void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid,
617 u32 group, struct nlmsghdr *nlh, gfp_t flags);
97c53cac 618extern void rtnl_set_sk_err(struct net *net, u32 group, int error);
1da177e4 619extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
e3703b3d
TG		 620extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
621 u32 id, u32 ts, u32 tsage, long expires,
622 u32 error);
1da177e4
LT		 623
624extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data);
625
626#define RTA_PUT(skb, attrtype, attrlen, data) \
627({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
628 goto rtattr_failure; \
629 __rta_fill(skb, attrtype, attrlen, data); })
630
d675c989 631#define RTA_APPEND(skb, attrlen, data) \
1da177e4
LT		 632({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \
633 goto rtattr_failure; \
d675c989
TG		 634 memcpy(skb_put(skb, attrlen), data, attrlen); })
635
636#define RTA_PUT_NOHDR(skb, attrlen, data) \
b3563c4f 637({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \
27a884dc 638 memset(skb_tail_pointer(skb) - (RTA_ALIGN(attrlen) - attrlen), 0, \
b3563c4f 639 RTA_ALIGN(attrlen) - attrlen); })
00768244 640
8f48bcd4
TG		 641#define RTA_PUT_U8(skb, attrtype, value) \
642({ u8 _tmp = (value); \
643 RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); })
644
645#define RTA_PUT_U16(skb, attrtype, value) \
646({ u16 _tmp = (value); \
647 RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); })
648
00768244
TG		 649#define RTA_PUT_U32(skb, attrtype, value) \
650({ u32 _tmp = (value); \
651 RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); })
652
653#define RTA_PUT_U64(skb, attrtype, value) \
654({ u64 _tmp = (value); \
655 RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); })
656
657#define RTA_PUT_SECS(skb, attrtype, value) \
658 RTA_PUT_U64(skb, attrtype, (value) / HZ)
659
660#define RTA_PUT_MSECS(skb, attrtype, value) \
661 RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value))
662
663#define RTA_PUT_STRING(skb, attrtype, value) \
664 RTA_PUT(skb, attrtype, strlen(value) + 1, value)
665
8f48bcd4
TG		 666#define RTA_PUT_FLAG(skb, attrtype) \
667 RTA_PUT(skb, attrtype, 0, NULL);
668
00768244 669#define RTA_NEST(skb, type) \
27a884dc 670({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
00768244
TG		 671 RTA_PUT(skb, type, 0, NULL); \
672 __start; })
673
674#define RTA_NEST_END(skb, start) \
27a884dc 675({ (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
00768244
TG		 676 (skb)->len; })
677
afdc3238
PM		 678#define RTA_NEST_COMPAT(skb, type, attrlen, data) \
679({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
680 RTA_PUT(skb, type, attrlen, data); \
681 RTA_NEST(skb, type); \
682 __start; })
683
684#define RTA_NEST_COMPAT_END(skb, start) \
685({ struct rtattr *__nest = (void *)(start) + NLMSG_ALIGN((start)->rta_len); \
686 (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
687 RTA_NEST_END(skb, __nest); \
688 (skb)->len; })
689
00768244 690#define RTA_NEST_CANCEL(skb, start) \
c52a3f89
TG		 691({ if (start) \
692 skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
00768244
TG		 693 -1; })
694
8f48bcd4
TG		 695#define RTA_GET_U8(rta) \
696({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \
697 goto rtattr_failure; \
698 *(u8 *) RTA_DATA(rta); })
699
700#define RTA_GET_U16(rta) \
701({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \
702 goto rtattr_failure; \
703 *(u16 *) RTA_DATA(rta); })
704
00768244
TG		 705#define RTA_GET_U32(rta) \
706({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \
707 goto rtattr_failure; \
708 *(u32 *) RTA_DATA(rta); })
709
710#define RTA_GET_U64(rta) \
711({ u64 _tmp; \
712 if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \
713 goto rtattr_failure; \
714 memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \
715 _tmp; })
716
8f48bcd4
TG		 717#define RTA_GET_FLAG(rta) (!!(rta))
718
00768244
TG		 719#define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ)
720#define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta)))
1da177e4
LT		 721
722static inline struct rtattr *
723__rta_reserve(struct sk_buff *skb, int attrtype, int attrlen)
724{
725 struct rtattr *rta;
726 int size = RTA_LENGTH(attrlen);
727
728 rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
729 rta->rta_type = attrtype;
730 rta->rta_len = size;
b3563c4f 731 memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
1da177e4
LT		 732 return rta;
733}
734
735#define __RTA_PUT(skb, attrtype, attrlen) \
736({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
737 goto rtattr_failure; \
738 __rta_reserve(skb, attrtype, attrlen); })
739
740extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
741
6756ae4b 742/* RTNL is used as a global lock for all changes to network configuration */
1da177e4 743extern void rtnl_lock(void);
1da177e4 744extern void rtnl_unlock(void);
6756ae4b 745extern int rtnl_trylock(void);
c9c1014b 746extern int rtnl_is_locked(void);
a898def2
PM		 747#ifdef CONFIG_PROVE_LOCKING
748extern int lockdep_rtnl_is_held(void);
749#endif /* #ifdef CONFIG_PROVE_LOCKING */
6756ae4b 750
1da177e4 751extern void rtnetlink_init(void);
6756ae4b 752extern void __rtnl_unlock(void);
1da177e4
LT		 753
754#define ASSERT_RTNL() do { \
c9c1014b 755 if (unlikely(!rtnl_is_locked())) { \
1da177e4
LT		 756 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
757 __FILE__, __LINE__); \
758 dump_stack(); \
759 } \
760} while(0)
761
9e762a4a
PM		 762static inline u32 rtm_get_table(struct rtattr **rta, u8 table)
763{
764 return RTA_GET_U32(rta[RTA_TABLE-1]);
765rtattr_failure:
766 return table;
767}
768
1da177e4
LT		 769#endif /* __KERNEL__ */
770
771
772#endif /* __LINUX_RTNETLINK_H */
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