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[NETLINK]: Restore API compatibility of address and neighbour bits
[net-next-2.6.git] / include / linux / rtnetlink.h
CommitLineData
1da177e4
LT		 1#ifndef __LINUX_RTNETLINK_H
2#define __LINUX_RTNETLINK_H
3
4#include <linux/netlink.h>
cbde1668 5#include <linux/if_link.h>
e07bca84
TG		 6#include <linux/if_addr.h>
7#include <linux/neighbour.h>
1da177e4
LT		 8
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
1da177e4
LT		 86
87 RTM_GETMULTICAST = 58,
88#define RTM_GETMULTICAST RTM_GETMULTICAST
89
90 RTM_GETANYCAST = 62,
91#define RTM_GETANYCAST RTM_GETANYCAST
92
c7fb64db
TG		 93 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
d775fc09
TG		 100 __RTM_MAX,
101#define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1)
1da177e4
LT		 102};
103
db46edc6
TG		 104#define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE)
105#define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2)
f90a0a74
TG		 106#define RTM_FAM(cmd) (((cmd) - RTM_BASE) >> 2)
107
1da177e4
LT		 108/*
109 Generic structure for encapsulation of optional route information.
110 It is reminiscent of sockaddr, but with sa_family replaced
111 with attribute type.
112 */
113
114struct rtattr
115{
116 unsigned short rta_len;
117 unsigned short rta_type;
118};
119
120/* Macros to handle rtattributes */
121
122#define RTA_ALIGNTO 4
123#define RTA_ALIGN(len) ( ((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1) )
124#define RTA_OK(rta,len) ((len) >= (int)sizeof(struct rtattr) && \
125 (rta)->rta_len >= sizeof(struct rtattr) && \
126 (rta)->rta_len <= (len))
127#define RTA_NEXT(rta,attrlen) ((attrlen) -= RTA_ALIGN((rta)->rta_len), \
128 (struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len)))
129#define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len))
130#define RTA_SPACE(len) RTA_ALIGN(RTA_LENGTH(len))
131#define RTA_DATA(rta) ((void*)(((char*)(rta)) + RTA_LENGTH(0)))
132#define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0))
133
134
135
136
137/******************************************************************************
138 * Definitions used in routing table administration.
139 ****/
140
141struct rtmsg
142{
143 unsigned char rtm_family;
144 unsigned char rtm_dst_len;
145 unsigned char rtm_src_len;
146 unsigned char rtm_tos;
147
148 unsigned char rtm_table; /* Routing table id */
149 unsigned char rtm_protocol; /* Routing protocol; see below */
150 unsigned char rtm_scope; /* See below */
151 unsigned char rtm_type; /* See below */
152
153 unsigned rtm_flags;
154};
155
156/* rtm_type */
157
158enum
159{
160 RTN_UNSPEC,
161 RTN_UNICAST, /* Gateway or direct route */
162 RTN_LOCAL, /* Accept locally */
163 RTN_BROADCAST, /* Accept locally as broadcast,
164 send as broadcast */
165 RTN_ANYCAST, /* Accept locally as broadcast,
166 but send as unicast */
167 RTN_MULTICAST, /* Multicast route */
168 RTN_BLACKHOLE, /* Drop */
169 RTN_UNREACHABLE, /* Destination is unreachable */
170 RTN_PROHIBIT, /* Administratively prohibited */
171 RTN_THROW, /* Not in this table */
172 RTN_NAT, /* Translate this address */
173 RTN_XRESOLVE, /* Use external resolver */
174 __RTN_MAX
175};
176
177#define RTN_MAX (__RTN_MAX - 1)
178
179
180/* rtm_protocol */
181
182#define RTPROT_UNSPEC 0
183#define RTPROT_REDIRECT 1 /* Route installed by ICMP redirects;
184 not used by current IPv4 */
185#define RTPROT_KERNEL 2 /* Route installed by kernel */
186#define RTPROT_BOOT 3 /* Route installed during boot */
187#define RTPROT_STATIC 4 /* Route installed by administrator */
188
189/* Values of protocol >= RTPROT_STATIC are not interpreted by kernel;
190 they are just passed from user and back as is.
191 It will be used by hypothetical multiple routing daemons.
192 Note that protocol values should be standardized in order to
193 avoid conflicts.
194 */
195
196#define RTPROT_GATED 8 /* Apparently, GateD */
197#define RTPROT_RA 9 /* RDISC/ND router advertisements */
198#define RTPROT_MRT 10 /* Merit MRT */
199#define RTPROT_ZEBRA 11 /* Zebra */
200#define RTPROT_BIRD 12 /* BIRD */
201#define RTPROT_DNROUTED 13 /* DECnet routing daemon */
202#define RTPROT_XORP 14 /* XORP */
99cae7fc 203#define RTPROT_NTK 15 /* Netsukuku */
1da177e4
LT		 204
205/* rtm_scope
206
207 Really it is not scope, but sort of distance to the destination.
208 NOWHERE are reserved for not existing destinations, HOST is our
209 local addresses, LINK are destinations, located on directly attached
210 link and UNIVERSE is everywhere in the Universe.
211
212 Intermediate values are also possible f.e. interior routes
213 could be assigned a value between UNIVERSE and LINK.
214*/
215
216enum rt_scope_t
217{
218 RT_SCOPE_UNIVERSE=0,
219/* User defined values */
220 RT_SCOPE_SITE=200,
221 RT_SCOPE_LINK=253,
222 RT_SCOPE_HOST=254,
223 RT_SCOPE_NOWHERE=255
224};
225
226/* rtm_flags */
227
228#define RTM_F_NOTIFY 0x100 /* Notify user of route change */
229#define RTM_F_CLONED 0x200 /* This route is cloned */
230#define RTM_F_EQUALIZE 0x400 /* Multipath equalizer: NI */
231#define RTM_F_PREFIX 0x800 /* Prefix addresses */
232
233/* Reserved table identifiers */
234
235enum rt_class_t
236{
237 RT_TABLE_UNSPEC=0,
238/* User defined values */
239 RT_TABLE_DEFAULT=253,
240 RT_TABLE_MAIN=254,
241 RT_TABLE_LOCAL=255,
b801f549 242 RT_TABLE_MAX=0xFFFFFFFF
1da177e4 243};
1da177e4
LT		 244
245
246/* Routing message attributes */
247
248enum rtattr_type_t
249{
250 RTA_UNSPEC,
251 RTA_DST,
252 RTA_SRC,
253 RTA_IIF,
254 RTA_OIF,
255 RTA_GATEWAY,
256 RTA_PRIORITY,
257 RTA_PREFSRC,
258 RTA_METRICS,
259 RTA_MULTIPATH,
260 RTA_PROTOINFO,
261 RTA_FLOW,
262 RTA_CACHEINFO,
263 RTA_SESSION,
264 RTA_MP_ALGO,
9e762a4a 265 RTA_TABLE,
1da177e4
LT		 266 __RTA_MAX
267};
268
269#define RTA_MAX (__RTA_MAX - 1)
270
271#define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg))))
272#define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg))
273
274/* RTM_MULTIPATH --- array of struct rtnexthop.
275 *
276 * "struct rtnexthop" describes all necessary nexthop information,
277 * i.e. parameters of path to a destination via this nexthop.
278 *
279 * At the moment it is impossible to set different prefsrc, mtu, window
280 * and rtt for different paths from multipath.
281 */
282
283struct rtnexthop
284{
285 unsigned short rtnh_len;
286 unsigned char rtnh_flags;
287 unsigned char rtnh_hops;
288 int rtnh_ifindex;
289};
290
291/* rtnh_flags */
292
293#define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */
294#define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */
295#define RTNH_F_ONLINK 4 /* Gateway is forced on link */
296
297/* Macros to handle hexthops */
298
299#define RTNH_ALIGNTO 4
300#define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) )
301#define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \
302 ((int)(rtnh)->rtnh_len) <= (len))
303#define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len)))
304#define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len))
305#define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len))
306#define RTNH_DATA(rtnh) ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0)))
307
308/* RTM_CACHEINFO */
309
310struct rta_cacheinfo
311{
312 __u32 rta_clntref;
313 __u32 rta_lastuse;
314 __s32 rta_expires;
315 __u32 rta_error;
316 __u32 rta_used;
317
318#define RTNETLINK_HAVE_PEERINFO 1
319 __u32 rta_id;
320 __u32 rta_ts;
321 __u32 rta_tsage;
322};
323
324/* RTM_METRICS --- array of struct rtattr with types of RTAX_* */
325
326enum
327{
328 RTAX_UNSPEC,
329#define RTAX_UNSPEC RTAX_UNSPEC
330 RTAX_LOCK,
331#define RTAX_LOCK RTAX_LOCK
332 RTAX_MTU,
333#define RTAX_MTU RTAX_MTU
334 RTAX_WINDOW,
335#define RTAX_WINDOW RTAX_WINDOW
336 RTAX_RTT,
337#define RTAX_RTT RTAX_RTT
338 RTAX_RTTVAR,
339#define RTAX_RTTVAR RTAX_RTTVAR
340 RTAX_SSTHRESH,
341#define RTAX_SSTHRESH RTAX_SSTHRESH
342 RTAX_CWND,
343#define RTAX_CWND RTAX_CWND
344 RTAX_ADVMSS,
345#define RTAX_ADVMSS RTAX_ADVMSS
346 RTAX_REORDERING,
347#define RTAX_REORDERING RTAX_REORDERING
348 RTAX_HOPLIMIT,
349#define RTAX_HOPLIMIT RTAX_HOPLIMIT
350 RTAX_INITCWND,
351#define RTAX_INITCWND RTAX_INITCWND
352 RTAX_FEATURES,
353#define RTAX_FEATURES RTAX_FEATURES
354 __RTAX_MAX
355};
356
357#define RTAX_MAX (__RTAX_MAX - 1)
358
359#define RTAX_FEATURE_ECN 0x00000001
360#define RTAX_FEATURE_SACK 0x00000002
361#define RTAX_FEATURE_TIMESTAMP 0x00000004
362#define RTAX_FEATURE_ALLFRAG 0x00000008
363
364struct rta_session
365{
366 __u8 proto;
8a47077a
PM		 367 __u8 pad1;
368 __u16 pad2;
1da177e4
LT		 369
370 union {
371 struct {
372 __u16 sport;
373 __u16 dport;
374 } ports;
375
376 struct {
377 __u8 type;
378 __u8 code;
379 __u16 ident;
380 } icmpt;
381
382 __u32 spi;
383 } u;
384};
385
1da177e4
LT		 386/****
387 * General form of address family dependent message.
388 ****/
389
390struct rtgenmsg
391{
392 unsigned char rtgen_family;
393};
394
395/*****************************************************************
396 * Link layer specific messages.
397 ****/
398
399/* struct ifinfomsg
400 * passes link level specific information, not dependent
401 * on network protocol.
402 */
403
404struct ifinfomsg
405{
406 unsigned char ifi_family;
407 unsigned char __ifi_pad;
408 unsigned short ifi_type; /* ARPHRD_* */
409 int ifi_index; /* Link index */
410 unsigned ifi_flags; /* IFF_* flags */
411 unsigned ifi_change; /* IFF_* change mask */
412};
413
414/********************************************************************
415 * prefix information
416 ****/
417
418struct prefixmsg
419{
420 unsigned char prefix_family;
8a47077a
PM		 421 unsigned char prefix_pad1;
422 unsigned short prefix_pad2;
1da177e4
LT		 423 int prefix_ifindex;
424 unsigned char prefix_type;
425 unsigned char prefix_len;
426 unsigned char prefix_flags;
8a47077a 427 unsigned char prefix_pad3;
1da177e4
LT		 428};
429
430enum
431{
432 PREFIX_UNSPEC,
433 PREFIX_ADDRESS,
434 PREFIX_CACHEINFO,
435 __PREFIX_MAX
436};
437
438#define PREFIX_MAX (__PREFIX_MAX - 1)
439
440struct prefix_cacheinfo
441{
442 __u32 preferred_time;
443 __u32 valid_time;
444};
445
1da177e4
LT		 446
447/*****************************************************************
448 * Traffic control messages.
449 ****/
450
451struct tcmsg
452{
453 unsigned char tcm_family;
454 unsigned char tcm__pad1;
455 unsigned short tcm__pad2;
456 int tcm_ifindex;
457 __u32 tcm_handle;
458 __u32 tcm_parent;
459 __u32 tcm_info;
460};
461
462enum
463{
464 TCA_UNSPEC,
465 TCA_KIND,
466 TCA_OPTIONS,
467 TCA_STATS,
468 TCA_XSTATS,
469 TCA_RATE,
470 TCA_FCNT,
471 TCA_STATS2,
472 __TCA_MAX
473};
474
475#define TCA_MAX (__TCA_MAX - 1)
476
477#define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg))))
478#define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg))
479
ac6d439d
PM		 480#ifndef __KERNEL__
481/* RTnetlink multicast groups - backwards compatibility for userspace */
1da177e4
LT		 482#define RTMGRP_LINK 1
483#define RTMGRP_NOTIFY 2
484#define RTMGRP_NEIGH 4
485#define RTMGRP_TC 8
486
487#define RTMGRP_IPV4_IFADDR 0x10
488#define RTMGRP_IPV4_MROUTE 0x20
489#define RTMGRP_IPV4_ROUTE 0x40
a5cdc030 490#define RTMGRP_IPV4_RULE 0x80
1da177e4
LT		 491
492#define RTMGRP_IPV6_IFADDR 0x100
493#define RTMGRP_IPV6_MROUTE 0x200
494#define RTMGRP_IPV6_ROUTE 0x400
495#define RTMGRP_IPV6_IFINFO 0x800
496
497#define RTMGRP_DECnet_IFADDR 0x1000
498#define RTMGRP_DECnet_ROUTE 0x4000
499
500#define RTMGRP_IPV6_PREFIX 0x20000
ac6d439d
PM		 501#endif
502
503/* RTnetlink multicast groups */
504enum rtnetlink_groups {
505 RTNLGRP_NONE,
506#define RTNLGRP_NONE RTNLGRP_NONE
507 RTNLGRP_LINK,
508#define RTNLGRP_LINK RTNLGRP_LINK
509 RTNLGRP_NOTIFY,
510#define RTNLGRP_NOTIFY RTNLGRP_NOTIFY
511 RTNLGRP_NEIGH,
512#define RTNLGRP_NEIGH RTNLGRP_NEIGH
513 RTNLGRP_TC,
514#define RTNLGRP_TC RTNLGRP_TC
515 RTNLGRP_IPV4_IFADDR,
516#define RTNLGRP_IPV4_IFADDR RTNLGRP_IPV4_IFADDR
517 RTNLGRP_IPV4_MROUTE,
518#define RTNLGRP_IPV4_MROUTE RTNLGRP_IPV4_MROUTE
519 RTNLGRP_IPV4_ROUTE,
520#define RTNLGRP_IPV4_ROUTE RTNLGRP_IPV4_ROUTE
a5cdc030
PM		 521 RTNLGRP_IPV4_RULE,
522#define RTNLGRP_IPV4_RULE RTNLGRP_IPV4_RULE
ac6d439d
PM		 523 RTNLGRP_IPV6_IFADDR,
524#define RTNLGRP_IPV6_IFADDR RTNLGRP_IPV6_IFADDR
525 RTNLGRP_IPV6_MROUTE,
526#define RTNLGRP_IPV6_MROUTE RTNLGRP_IPV6_MROUTE
527 RTNLGRP_IPV6_ROUTE,
528#define RTNLGRP_IPV6_ROUTE RTNLGRP_IPV6_ROUTE
529 RTNLGRP_IPV6_IFINFO,
530#define RTNLGRP_IPV6_IFINFO RTNLGRP_IPV6_IFINFO
531 RTNLGRP_DECnet_IFADDR,
532#define RTNLGRP_DECnet_IFADDR RTNLGRP_DECnet_IFADDR
6b80ebed 533 RTNLGRP_NOP2,
ac6d439d
PM		 534 RTNLGRP_DECnet_ROUTE,
535#define RTNLGRP_DECnet_ROUTE RTNLGRP_DECnet_ROUTE
a8731cbf
SW		 536 RTNLGRP_DECnet_RULE,
537#define RTNLGRP_DECnet_RULE RTNLGRP_DECnet_RULE
6b80ebed 538 RTNLGRP_NOP4,
ac6d439d
PM		 539 RTNLGRP_IPV6_PREFIX,
540#define RTNLGRP_IPV6_PREFIX RTNLGRP_IPV6_PREFIX
101367c2
TG		 541 RTNLGRP_IPV6_RULE,
542#define RTNLGRP_IPV6_RULE RTNLGRP_IPV6_RULE
ac6d439d
PM		 543 __RTNLGRP_MAX
544};
545#define RTNLGRP_MAX (__RTNLGRP_MAX - 1)
1da177e4
LT		 546
547/* TC action piece */
548struct tcamsg
549{
550 unsigned char tca_family;
551 unsigned char tca__pad1;
552 unsigned short tca__pad2;
553};
554#define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg))))
555#define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg))
556#define TCA_ACT_TAB 1 /* attr type must be >=1 */
557#define TCAA_MAX 1
558
559/* End of information exported to user level */
560
561#ifdef __KERNEL__
562
6756ae4b 563#include <linux/mutex.h>
1da177e4
LT		 564
565extern size_t rtattr_strlcpy(char *dest, const struct rtattr *rta, size_t size);
566static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
567{
568 int len = strlen(str) + 1;
569 return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len);
570}
571
572extern int rtattr_parse(struct rtattr *tb[], int maxattr, struct rtattr *rta, int len);
573
574#define rtattr_parse_nested(tb, max, rta) \
575 rtattr_parse((tb), (max), RTA_DATA((rta)), RTA_PAYLOAD((rta)))
576
1da177e4
LT		 577struct rtnetlink_link
578{
579 int (*doit)(struct sk_buff *, struct nlmsghdr*, void *attr);
580 int (*dumpit)(struct sk_buff *, struct netlink_callback *cb);
581};
582
583extern struct rtnetlink_link * rtnetlink_links[NPROTO];
584extern int rtnetlink_send(struct sk_buff *skb, u32 pid, u32 group, int echo);
2942e900 585extern int rtnl_unicast(struct sk_buff *skb, u32 pid);
97676b6b
TG		 586extern int rtnl_notify(struct sk_buff *skb, u32 pid, u32 group,
587 struct nlmsghdr *nlh, gfp_t flags);
588extern void rtnl_set_sk_err(u32 group, int error);
1da177e4 589extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
e3703b3d
TG		 590extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
591 u32 id, u32 ts, u32 tsage, long expires,
592 u32 error);
1da177e4
LT		 593
594extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data);
595
596#define RTA_PUT(skb, attrtype, attrlen, data) \
597({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
598 goto rtattr_failure; \
599 __rta_fill(skb, attrtype, attrlen, data); })
600
d675c989 601#define RTA_APPEND(skb, attrlen, data) \
1da177e4
LT		 602({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \
603 goto rtattr_failure; \
d675c989
TG		 604 memcpy(skb_put(skb, attrlen), data, attrlen); })
605
606#define RTA_PUT_NOHDR(skb, attrlen, data) \
b3563c4f
PM		 607({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \
608 memset(skb->tail - (RTA_ALIGN(attrlen) - attrlen), 0, \
609 RTA_ALIGN(attrlen) - attrlen); })
00768244 610
8f48bcd4
TG		 611#define RTA_PUT_U8(skb, attrtype, value) \
612({ u8 _tmp = (value); \
613 RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); })
614
615#define RTA_PUT_U16(skb, attrtype, value) \
616({ u16 _tmp = (value); \
617 RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); })
618
00768244
TG		 619#define RTA_PUT_U32(skb, attrtype, value) \
620({ u32 _tmp = (value); \
621 RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); })
622
623#define RTA_PUT_U64(skb, attrtype, value) \
624({ u64 _tmp = (value); \
625 RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); })
626
627#define RTA_PUT_SECS(skb, attrtype, value) \
628 RTA_PUT_U64(skb, attrtype, (value) / HZ)
629
630#define RTA_PUT_MSECS(skb, attrtype, value) \
631 RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value))
632
633#define RTA_PUT_STRING(skb, attrtype, value) \
634 RTA_PUT(skb, attrtype, strlen(value) + 1, value)
635
8f48bcd4
TG		 636#define RTA_PUT_FLAG(skb, attrtype) \
637 RTA_PUT(skb, attrtype, 0, NULL);
638
00768244
TG		 639#define RTA_NEST(skb, type) \
640({ struct rtattr *__start = (struct rtattr *) (skb)->tail; \
641 RTA_PUT(skb, type, 0, NULL); \
642 __start; })
643
644#define RTA_NEST_END(skb, start) \
645({ (start)->rta_len = ((skb)->tail - (unsigned char *) (start)); \
646 (skb)->len; })
647
648#define RTA_NEST_CANCEL(skb, start) \
c52a3f89
TG		 649({ if (start) \
650 skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
00768244
TG		 651 -1; })
652
8f48bcd4
TG		 653#define RTA_GET_U8(rta) \
654({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \
655 goto rtattr_failure; \
656 *(u8 *) RTA_DATA(rta); })
657
658#define RTA_GET_U16(rta) \
659({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \
660 goto rtattr_failure; \
661 *(u16 *) RTA_DATA(rta); })
662
00768244
TG		 663#define RTA_GET_U32(rta) \
664({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \
665 goto rtattr_failure; \
666 *(u32 *) RTA_DATA(rta); })
667
668#define RTA_GET_U64(rta) \
669({ u64 _tmp; \
670 if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \
671 goto rtattr_failure; \
672 memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \
673 _tmp; })
674
8f48bcd4
TG		 675#define RTA_GET_FLAG(rta) (!!(rta))
676
00768244
TG		 677#define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ)
678#define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta)))
1da177e4
LT		 679
680static inline struct rtattr *
681__rta_reserve(struct sk_buff *skb, int attrtype, int attrlen)
682{
683 struct rtattr *rta;
684 int size = RTA_LENGTH(attrlen);
685
686 rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
687 rta->rta_type = attrtype;
688 rta->rta_len = size;
b3563c4f 689 memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
1da177e4
LT		 690 return rta;
691}
692
693#define __RTA_PUT(skb, attrtype, attrlen) \
694({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
695 goto rtattr_failure; \
696 __rta_reserve(skb, attrtype, attrlen); })
697
698extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
699
6756ae4b 700/* RTNL is used as a global lock for all changes to network configuration */
1da177e4 701extern void rtnl_lock(void);
1da177e4 702extern void rtnl_unlock(void);
6756ae4b
SH		 703extern int rtnl_trylock(void);
704
1da177e4 705extern void rtnetlink_init(void);
6756ae4b 706extern void __rtnl_unlock(void);
1da177e4
LT		 707
708#define ASSERT_RTNL() do { \
6756ae4b
SH		 709 if (unlikely(rtnl_trylock())) { \
710 rtnl_unlock(); \
1da177e4
LT		 711 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
712 __FILE__, __LINE__); \
713 dump_stack(); \
714 } \
715} while(0)
716
717#define BUG_TRAP(x) do { \
718 if (unlikely(!(x))) { \
719 printk(KERN_ERR "KERNEL: assertion (%s) failed at %s (%d)\n", \
720 #x, __FILE__ , __LINE__); \
721 } \
722} while(0)
723
9e762a4a
PM		 724static inline u32 rtm_get_table(struct rtattr **rta, u8 table)
725{
726 return RTA_GET_U32(rta[RTA_TABLE-1]);
727rtattr_failure:
728 return table;
729}
730
1da177e4
LT		 731#endif /* __KERNEL__ */
732
733
734#endif /* __LINUX_RTNETLINK_H */
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