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[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
LT		 9
10/****
11 * Routing/neighbour discovery messages.
12 ****/
13
14/* Types of messages */
15
16enum {
17 RTM_BASE = 16,
18#define RTM_BASE RTM_BASE
19
20 RTM_NEWLINK = 16,
21#define RTM_NEWLINK RTM_NEWLINK
22 RTM_DELLINK,
23#define RTM_DELLINK RTM_DELLINK
24 RTM_GETLINK,
25#define RTM_GETLINK RTM_GETLINK
26 RTM_SETLINK,
27#define RTM_SETLINK RTM_SETLINK
28
29 RTM_NEWADDR = 20,
30#define RTM_NEWADDR RTM_NEWADDR
31 RTM_DELADDR,
32#define RTM_DELADDR RTM_DELADDR
33 RTM_GETADDR,
34#define RTM_GETADDR RTM_GETADDR
35
36 RTM_NEWROUTE = 24,
37#define RTM_NEWROUTE RTM_NEWROUTE
38 RTM_DELROUTE,
39#define RTM_DELROUTE RTM_DELROUTE
40 RTM_GETROUTE,
41#define RTM_GETROUTE RTM_GETROUTE
42
43 RTM_NEWNEIGH = 28,
44#define RTM_NEWNEIGH RTM_NEWNEIGH
45 RTM_DELNEIGH,
46#define RTM_DELNEIGH RTM_DELNEIGH
47 RTM_GETNEIGH,
48#define RTM_GETNEIGH RTM_GETNEIGH
49
50 RTM_NEWRULE = 32,
51#define RTM_NEWRULE RTM_NEWRULE
52 RTM_DELRULE,
53#define RTM_DELRULE RTM_DELRULE
54 RTM_GETRULE,
55#define RTM_GETRULE RTM_GETRULE
56
57 RTM_NEWQDISC = 36,
58#define RTM_NEWQDISC RTM_NEWQDISC
59 RTM_DELQDISC,
60#define RTM_DELQDISC RTM_DELQDISC
61 RTM_GETQDISC,
62#define RTM_GETQDISC RTM_GETQDISC
63
64 RTM_NEWTCLASS = 40,
65#define RTM_NEWTCLASS RTM_NEWTCLASS
66 RTM_DELTCLASS,
67#define RTM_DELTCLASS RTM_DELTCLASS
68 RTM_GETTCLASS,
69#define RTM_GETTCLASS RTM_GETTCLASS
70
71 RTM_NEWTFILTER = 44,
72#define RTM_NEWTFILTER RTM_NEWTFILTER
73 RTM_DELTFILTER,
74#define RTM_DELTFILTER RTM_DELTFILTER
75 RTM_GETTFILTER,
76#define RTM_GETTFILTER RTM_GETTFILTER
77
78 RTM_NEWACTION = 48,
79#define RTM_NEWACTION RTM_NEWACTION
80 RTM_DELACTION,
81#define RTM_DELACTION RTM_DELACTION
82 RTM_GETACTION,
83#define RTM_GETACTION RTM_GETACTION
84
85 RTM_NEWPREFIX = 52,
86#define RTM_NEWPREFIX RTM_NEWPREFIX
1da177e4
LT		 87
88 RTM_GETMULTICAST = 58,
89#define RTM_GETMULTICAST RTM_GETMULTICAST
90
91 RTM_GETANYCAST = 62,
92#define RTM_GETANYCAST RTM_GETANYCAST
93
c7fb64db
TG		 94 RTM_NEWNEIGHTBL = 64,
95#define RTM_NEWNEIGHTBL RTM_NEWNEIGHTBL
96 RTM_GETNEIGHTBL = 66,
97#define RTM_GETNEIGHTBL RTM_GETNEIGHTBL
98 RTM_SETNEIGHTBL,
99#define RTM_SETNEIGHTBL RTM_SETNEIGHTBL
100
31910575
PY		 101 RTM_NEWNDUSEROPT = 68,
102#define RTM_NEWNDUSEROPT RTM_NEWNDUSEROPT
103
2a8cc6c8
YH		 104 RTM_NEWADDRLABEL = 72,
105#define RTM_NEWADDRLABEL RTM_NEWADDRLABEL
106 RTM_DELADDRLABEL,
5d5d9c97 107#define RTM_DELADDRLABEL RTM_DELADDRLABEL
2a8cc6c8
YH		 108 RTM_GETADDRLABEL,
109#define RTM_GETADDRLABEL RTM_GETADDRLABEL
110
2f90b865
AD		 111 RTM_GETDCB = 78,
112#define RTM_GETDCB RTM_GETDCB
113 RTM_SETDCB,
114#define RTM_SETDCB RTM_SETDCB
115
d775fc09
TG		 116 __RTM_MAX,
117#define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1)
1da177e4
LT		 118};
119
db46edc6
TG		 120#define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE)
121#define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2)
f90a0a74
TG		 122#define RTM_FAM(cmd) (((cmd) - RTM_BASE) >> 2)
123
1da177e4
LT		 124/*
125 Generic structure for encapsulation of optional route information.
126 It is reminiscent of sockaddr, but with sa_family replaced
127 with attribute type.
128 */
129
d94d9fee 130struct rtattr {
1da177e4
LT		 131 unsigned short rta_len;
132 unsigned short rta_type;
133};
134
135/* Macros to handle rtattributes */
136
137#define RTA_ALIGNTO 4
138#define RTA_ALIGN(len) ( ((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1) )
139#define RTA_OK(rta,len) ((len) >= (int)sizeof(struct rtattr) && \
140 (rta)->rta_len >= sizeof(struct rtattr) && \
141 (rta)->rta_len <= (len))
142#define RTA_NEXT(rta,attrlen) ((attrlen) -= RTA_ALIGN((rta)->rta_len), \
143 (struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len)))
144#define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len))
145#define RTA_SPACE(len) RTA_ALIGN(RTA_LENGTH(len))
146#define RTA_DATA(rta) ((void*)(((char*)(rta)) + RTA_LENGTH(0)))
147#define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0))
148
149
150
151
152/******************************************************************************
153 * Definitions used in routing table administration.
154 ****/
155
d94d9fee 156struct rtmsg {
1da177e4
LT		 157 unsigned char rtm_family;
158 unsigned char rtm_dst_len;
159 unsigned char rtm_src_len;
160 unsigned char rtm_tos;
161
162 unsigned char rtm_table; /* Routing table id */
163 unsigned char rtm_protocol; /* Routing protocol; see below */
164 unsigned char rtm_scope; /* See below */
165 unsigned char rtm_type; /* See below */
166
167 unsigned rtm_flags;
168};
169
170/* rtm_type */
171
d94d9fee 172enum {
1da177e4
LT		 173 RTN_UNSPEC,
174 RTN_UNICAST, /* Gateway or direct route */
175 RTN_LOCAL, /* Accept locally */
176 RTN_BROADCAST, /* Accept locally as broadcast,
177 send as broadcast */
178 RTN_ANYCAST, /* Accept locally as broadcast,
179 but send as unicast */
180 RTN_MULTICAST, /* Multicast route */
181 RTN_BLACKHOLE, /* Drop */
182 RTN_UNREACHABLE, /* Destination is unreachable */
183 RTN_PROHIBIT, /* Administratively prohibited */
184 RTN_THROW, /* Not in this table */
185 RTN_NAT, /* Translate this address */
186 RTN_XRESOLVE, /* Use external resolver */
187 __RTN_MAX
188};
189
190#define RTN_MAX (__RTN_MAX - 1)
191
192
193/* rtm_protocol */
194
195#define RTPROT_UNSPEC 0
196#define RTPROT_REDIRECT 1 /* Route installed by ICMP redirects;
197 not used by current IPv4 */
198#define RTPROT_KERNEL 2 /* Route installed by kernel */
199#define RTPROT_BOOT 3 /* Route installed during boot */
200#define RTPROT_STATIC 4 /* Route installed by administrator */
201
202/* Values of protocol >= RTPROT_STATIC are not interpreted by kernel;
203 they are just passed from user and back as is.
204 It will be used by hypothetical multiple routing daemons.
205 Note that protocol values should be standardized in order to
206 avoid conflicts.
207 */
208
209#define RTPROT_GATED 8 /* Apparently, GateD */
210#define RTPROT_RA 9 /* RDISC/ND router advertisements */
211#define RTPROT_MRT 10 /* Merit MRT */
212#define RTPROT_ZEBRA 11 /* Zebra */
213#define RTPROT_BIRD 12 /* BIRD */
214#define RTPROT_DNROUTED 13 /* DECnet routing daemon */
215#define RTPROT_XORP 14 /* XORP */
99cae7fc 216#define RTPROT_NTK 15 /* Netsukuku */
2e1ab634 217#define RTPROT_DHCP 16 /* DHCP client */
1da177e4
LT		 218
219/* rtm_scope
220
221 Really it is not scope, but sort of distance to the destination.
222 NOWHERE are reserved for not existing destinations, HOST is our
223 local addresses, LINK are destinations, located on directly attached
224 link and UNIVERSE is everywhere in the Universe.
225
226 Intermediate values are also possible f.e. interior routes
227 could be assigned a value between UNIVERSE and LINK.
228*/
229
d94d9fee 230enum rt_scope_t {
1da177e4
LT		 231 RT_SCOPE_UNIVERSE=0,
232/* User defined values */
233 RT_SCOPE_SITE=200,
234 RT_SCOPE_LINK=253,
235 RT_SCOPE_HOST=254,
236 RT_SCOPE_NOWHERE=255
237};
238
239/* rtm_flags */
240
241#define RTM_F_NOTIFY 0x100 /* Notify user of route change */
242#define RTM_F_CLONED 0x200 /* This route is cloned */
243#define RTM_F_EQUALIZE 0x400 /* Multipath equalizer: NI */
244#define RTM_F_PREFIX 0x800 /* Prefix addresses */
245
246/* Reserved table identifiers */
247
d94d9fee 248enum rt_class_t {
1da177e4
LT		 249 RT_TABLE_UNSPEC=0,
250/* User defined values */
709772e6 251 RT_TABLE_COMPAT=252,
1da177e4
LT		 252 RT_TABLE_DEFAULT=253,
253 RT_TABLE_MAIN=254,
254 RT_TABLE_LOCAL=255,
b801f549 255 RT_TABLE_MAX=0xFFFFFFFF
1da177e4 256};
1da177e4
LT		 257
258
259/* Routing message attributes */
260
d94d9fee 261enum rtattr_type_t {
1da177e4
LT		 262 RTA_UNSPEC,
263 RTA_DST,
264 RTA_SRC,
265 RTA_IIF,
266 RTA_OIF,
267 RTA_GATEWAY,
268 RTA_PRIORITY,
269 RTA_PREFSRC,
270 RTA_METRICS,
271 RTA_MULTIPATH,
1f9d11c7 272 RTA_PROTOINFO, /* no longer used */
1da177e4
LT		 273 RTA_FLOW,
274 RTA_CACHEINFO,
1f9d11c7 275 RTA_SESSION, /* no longer used */
e06e7c61 276 RTA_MP_ALGO, /* no longer used */
9e762a4a 277 RTA_TABLE,
1da177e4
LT		 278 __RTA_MAX
279};
280
281#define RTA_MAX (__RTA_MAX - 1)
282
283#define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg))))
284#define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg))
285
286/* RTM_MULTIPATH --- array of struct rtnexthop.
287 *
288 * "struct rtnexthop" describes all necessary nexthop information,
289 * i.e. parameters of path to a destination via this nexthop.
290 *
291 * At the moment it is impossible to set different prefsrc, mtu, window
292 * and rtt for different paths from multipath.
293 */
294
d94d9fee 295struct rtnexthop {
1da177e4
LT		 296 unsigned short rtnh_len;
297 unsigned char rtnh_flags;
298 unsigned char rtnh_hops;
299 int rtnh_ifindex;
300};
301
302/* rtnh_flags */
303
304#define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */
305#define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */
306#define RTNH_F_ONLINK 4 /* Gateway is forced on link */
307
308/* Macros to handle hexthops */
309
310#define RTNH_ALIGNTO 4
311#define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) )
312#define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \
313 ((int)(rtnh)->rtnh_len) <= (len))
314#define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len)))
315#define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len))
316#define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len))
317#define RTNH_DATA(rtnh) ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0)))
318
319/* RTM_CACHEINFO */
320
d94d9fee 321struct rta_cacheinfo {
1da177e4
LT		 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
d94d9fee 336enum {
1da177e4
LT		 337 RTAX_UNSPEC,
338#define RTAX_UNSPEC RTAX_UNSPEC
339 RTAX_LOCK,
340#define RTAX_LOCK RTAX_LOCK
341 RTAX_MTU,
342#define RTAX_MTU RTAX_MTU
343 RTAX_WINDOW,
344#define RTAX_WINDOW RTAX_WINDOW
345 RTAX_RTT,
346#define RTAX_RTT RTAX_RTT
347 RTAX_RTTVAR,
348#define RTAX_RTTVAR RTAX_RTTVAR
349 RTAX_SSTHRESH,
350#define RTAX_SSTHRESH RTAX_SSTHRESH
351 RTAX_CWND,
352#define RTAX_CWND RTAX_CWND
353 RTAX_ADVMSS,
354#define RTAX_ADVMSS RTAX_ADVMSS
355 RTAX_REORDERING,
356#define RTAX_REORDERING RTAX_REORDERING
357 RTAX_HOPLIMIT,
358#define RTAX_HOPLIMIT RTAX_HOPLIMIT
359 RTAX_INITCWND,
360#define RTAX_INITCWND RTAX_INITCWND
361 RTAX_FEATURES,
362#define RTAX_FEATURES RTAX_FEATURES
05bb1fad
DM		 363 RTAX_RTO_MIN,
364#define RTAX_RTO_MIN RTAX_RTO_MIN
1da177e4
LT		 365 __RTAX_MAX
366};
367
368#define RTAX_MAX (__RTAX_MAX - 1)
369
370#define RTAX_FEATURE_ECN 0x00000001
1aba721e 371#define RTAX_FEATURE_NO_SACK 0x00000002
cda42ebd 372#define RTAX_FEATURE_NO_TSTAMP 0x00000004
1da177e4 373#define RTAX_FEATURE_ALLFRAG 0x00000008
345cda2f 374#define RTAX_FEATURE_NO_WSCALE 0x00000010
dc343475 375#define RTAX_FEATURE_NO_DSACK 0x00000020
1da177e4 376
d94d9fee 377struct rta_session {
1da177e4 378 __u8 proto;
8a47077a
PM		 379 __u8 pad1;
380 __u16 pad2;
1da177e4
LT		 381
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
1da177e4
LT		 398/****
399 * General form of address family dependent message.
400 ****/
401
d94d9fee 402struct rtgenmsg {
1da177e4
LT		 403 unsigned char rtgen_family;
404};
405
406/*****************************************************************
407 * Link layer specific messages.
408 ****/
409
410/* struct ifinfomsg
411 * passes link level specific information, not dependent
412 * on network protocol.
413 */
414
d94d9fee 415struct ifinfomsg {
1da177e4
LT		 416 unsigned char ifi_family;
417 unsigned char __ifi_pad;
418 unsigned short ifi_type; /* ARPHRD_* */
419 int ifi_index; /* Link index */
420 unsigned ifi_flags; /* IFF_* flags */
421 unsigned ifi_change; /* IFF_* change mask */
422};
423
424/********************************************************************
425 * prefix information
426 ****/
427
d94d9fee 428struct prefixmsg {
1da177e4 429 unsigned char prefix_family;
8a47077a
PM		 430 unsigned char prefix_pad1;
431 unsigned short prefix_pad2;
1da177e4
LT		 432 int prefix_ifindex;
433 unsigned char prefix_type;
434 unsigned char prefix_len;
435 unsigned char prefix_flags;
8a47077a 436 unsigned char prefix_pad3;
1da177e4
LT		 437};
438
439enum
440{
441 PREFIX_UNSPEC,
442 PREFIX_ADDRESS,
443 PREFIX_CACHEINFO,
444 __PREFIX_MAX
445};
446
447#define PREFIX_MAX (__PREFIX_MAX - 1)
448
d94d9fee 449struct prefix_cacheinfo {
1da177e4
LT		 450 __u32 preferred_time;
451 __u32 valid_time;
452};
453
1da177e4
LT		 454
455/*****************************************************************
456 * Traffic control messages.
457 ****/
458
d94d9fee 459struct tcmsg {
1da177e4
LT		 460 unsigned char tcm_family;
461 unsigned char tcm__pad1;
462 unsigned short tcm__pad2;
463 int tcm_ifindex;
464 __u32 tcm_handle;
465 __u32 tcm_parent;
466 __u32 tcm_info;
467};
468
d94d9fee 469enum {
1da177e4
LT		 470 TCA_UNSPEC,
471 TCA_KIND,
472 TCA_OPTIONS,
473 TCA_STATS,
474 TCA_XSTATS,
475 TCA_RATE,
476 TCA_FCNT,
477 TCA_STATS2,
175f9c1b 478 TCA_STAB,
1da177e4
LT		 479 __TCA_MAX
480};
481
482#define TCA_MAX (__TCA_MAX - 1)
483
484#define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg))))
485#define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg))
486
31910575
PY		 487/********************************************************************
488 * Neighbor Discovery userland options
489 ****/
490
d94d9fee 491struct nduseroptmsg {
31910575
PY		 492 unsigned char nduseropt_family;
493 unsigned char nduseropt_pad1;
494 unsigned short nduseropt_opts_len; /* Total length of options */
dbb2ed24 495 int nduseropt_ifindex;
31910575
PY		 496 __u8 nduseropt_icmp_type;
497 __u8 nduseropt_icmp_code;
498 unsigned short nduseropt_pad2;
dbb2ed24 499 unsigned int nduseropt_pad3;
31910575
PY		 500 /* Followed by one or more ND options */
501};
502
d94d9fee 503enum {
31910575
PY		 504 NDUSEROPT_UNSPEC,
505 NDUSEROPT_SRCADDR,
506 __NDUSEROPT_MAX
507};
508
509#define NDUSEROPT_MAX (__NDUSEROPT_MAX - 1)
510
ac6d439d
PM		 511#ifndef __KERNEL__
512/* RTnetlink multicast groups - backwards compatibility for userspace */
1da177e4
LT		 513#define RTMGRP_LINK 1
514#define RTMGRP_NOTIFY 2
515#define RTMGRP_NEIGH 4
516#define RTMGRP_TC 8
517
518#define RTMGRP_IPV4_IFADDR 0x10
519#define RTMGRP_IPV4_MROUTE 0x20
520#define RTMGRP_IPV4_ROUTE 0x40
a5cdc030 521#define RTMGRP_IPV4_RULE 0x80
1da177e4
LT		 522
523#define RTMGRP_IPV6_IFADDR 0x100
524#define RTMGRP_IPV6_MROUTE 0x200
525#define RTMGRP_IPV6_ROUTE 0x400
526#define RTMGRP_IPV6_IFINFO 0x800
527
528#define RTMGRP_DECnet_IFADDR 0x1000
529#define RTMGRP_DECnet_ROUTE 0x4000
530
531#define RTMGRP_IPV6_PREFIX 0x20000
ac6d439d
PM		 532#endif
533
534/* RTnetlink multicast groups */
535enum rtnetlink_groups {
536 RTNLGRP_NONE,
537#define RTNLGRP_NONE RTNLGRP_NONE
538 RTNLGRP_LINK,
539#define RTNLGRP_LINK RTNLGRP_LINK
540 RTNLGRP_NOTIFY,
541#define RTNLGRP_NOTIFY RTNLGRP_NOTIFY
542 RTNLGRP_NEIGH,
543#define RTNLGRP_NEIGH RTNLGRP_NEIGH
544 RTNLGRP_TC,
545#define RTNLGRP_TC RTNLGRP_TC
546 RTNLGRP_IPV4_IFADDR,
547#define RTNLGRP_IPV4_IFADDR RTNLGRP_IPV4_IFADDR
548 RTNLGRP_IPV4_MROUTE,
549#define RTNLGRP_IPV4_MROUTE RTNLGRP_IPV4_MROUTE
550 RTNLGRP_IPV4_ROUTE,
551#define RTNLGRP_IPV4_ROUTE RTNLGRP_IPV4_ROUTE
a5cdc030
PM		 552 RTNLGRP_IPV4_RULE,
553#define RTNLGRP_IPV4_RULE RTNLGRP_IPV4_RULE
ac6d439d
PM		 554 RTNLGRP_IPV6_IFADDR,
555#define RTNLGRP_IPV6_IFADDR RTNLGRP_IPV6_IFADDR
556 RTNLGRP_IPV6_MROUTE,
557#define RTNLGRP_IPV6_MROUTE RTNLGRP_IPV6_MROUTE
558 RTNLGRP_IPV6_ROUTE,
559#define RTNLGRP_IPV6_ROUTE RTNLGRP_IPV6_ROUTE
560 RTNLGRP_IPV6_IFINFO,
561#define RTNLGRP_IPV6_IFINFO RTNLGRP_IPV6_IFINFO
562 RTNLGRP_DECnet_IFADDR,
563#define RTNLGRP_DECnet_IFADDR RTNLGRP_DECnet_IFADDR
6b80ebed 564 RTNLGRP_NOP2,
ac6d439d
PM		 565 RTNLGRP_DECnet_ROUTE,
566#define RTNLGRP_DECnet_ROUTE RTNLGRP_DECnet_ROUTE
a8731cbf
SW		 567 RTNLGRP_DECnet_RULE,
568#define RTNLGRP_DECnet_RULE RTNLGRP_DECnet_RULE
6b80ebed 569 RTNLGRP_NOP4,
ac6d439d
PM		 570 RTNLGRP_IPV6_PREFIX,
571#define RTNLGRP_IPV6_PREFIX RTNLGRP_IPV6_PREFIX
101367c2
TG		 572 RTNLGRP_IPV6_RULE,
573#define RTNLGRP_IPV6_RULE RTNLGRP_IPV6_RULE
31910575
PY		 574 RTNLGRP_ND_USEROPT,
575#define RTNLGRP_ND_USEROPT RTNLGRP_ND_USEROPT
bce7b154
RDC		 576 RTNLGRP_PHONET_IFADDR,
577#define RTNLGRP_PHONET_IFADDR RTNLGRP_PHONET_IFADDR
578 RTNLGRP_PHONET_ROUTE,
579#define RTNLGRP_PHONET_ROUTE RTNLGRP_PHONET_ROUTE
ac6d439d
PM		 580 __RTNLGRP_MAX
581};
582#define RTNLGRP_MAX (__RTNLGRP_MAX - 1)
1da177e4
LT		 583
584/* TC action piece */
d94d9fee 585struct tcamsg {
1da177e4
LT		 586 unsigned char tca_family;
587 unsigned char tca__pad1;
588 unsigned short tca__pad2;
589};
590#define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg))))
591#define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg))
592#define TCA_ACT_TAB 1 /* attr type must be >=1 */
593#define TCAA_MAX 1
594
595/* End of information exported to user level */
596
597#ifdef __KERNEL__
598
6756ae4b 599#include <linux/mutex.h>
1da177e4 600
1da177e4
LT		 601static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
602{
603 int len = strlen(str) + 1;
604 return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len);
605}
606
97c53cac
DL		 607extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo);
608extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid);
1ce85fe4
PNA		 609extern void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid,
610 u32 group, struct nlmsghdr *nlh, gfp_t flags);
97c53cac 611extern void rtnl_set_sk_err(struct net *net, u32 group, int error);
1da177e4 612extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
e3703b3d
TG		 613extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
614 u32 id, u32 ts, u32 tsage, long expires,
615 u32 error);
1da177e4
LT		 616
617extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data);
618
619#define RTA_PUT(skb, attrtype, attrlen, data) \
620({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
621 goto rtattr_failure; \
622 __rta_fill(skb, attrtype, attrlen, data); })
623
d675c989 624#define RTA_APPEND(skb, attrlen, data) \
1da177e4
LT		 625({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \
626 goto rtattr_failure; \
d675c989
TG		 627 memcpy(skb_put(skb, attrlen), data, attrlen); })
628
629#define RTA_PUT_NOHDR(skb, attrlen, data) \
b3563c4f 630({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \
27a884dc 631 memset(skb_tail_pointer(skb) - (RTA_ALIGN(attrlen) - attrlen), 0, \
b3563c4f 632 RTA_ALIGN(attrlen) - attrlen); })
00768244 633
8f48bcd4
TG		 634#define RTA_PUT_U8(skb, attrtype, value) \
635({ u8 _tmp = (value); \
636 RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); })
637
638#define RTA_PUT_U16(skb, attrtype, value) \
639({ u16 _tmp = (value); \
640 RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); })
641
00768244
TG		 642#define RTA_PUT_U32(skb, attrtype, value) \
643({ u32 _tmp = (value); \
644 RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); })
645
646#define RTA_PUT_U64(skb, attrtype, value) \
647({ u64 _tmp = (value); \
648 RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); })
649
650#define RTA_PUT_SECS(skb, attrtype, value) \
651 RTA_PUT_U64(skb, attrtype, (value) / HZ)
652
653#define RTA_PUT_MSECS(skb, attrtype, value) \
654 RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value))
655
656#define RTA_PUT_STRING(skb, attrtype, value) \
657 RTA_PUT(skb, attrtype, strlen(value) + 1, value)
658
8f48bcd4
TG		 659#define RTA_PUT_FLAG(skb, attrtype) \
660 RTA_PUT(skb, attrtype, 0, NULL);
661
00768244 662#define RTA_NEST(skb, type) \
27a884dc 663({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
00768244
TG		 664 RTA_PUT(skb, type, 0, NULL); \
665 __start; })
666
667#define RTA_NEST_END(skb, start) \
27a884dc 668({ (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
00768244
TG		 669 (skb)->len; })
670
afdc3238
PM		 671#define RTA_NEST_COMPAT(skb, type, attrlen, data) \
672({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
673 RTA_PUT(skb, type, attrlen, data); \
674 RTA_NEST(skb, type); \
675 __start; })
676
677#define RTA_NEST_COMPAT_END(skb, start) \
678({ struct rtattr *__nest = (void *)(start) + NLMSG_ALIGN((start)->rta_len); \
679 (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
680 RTA_NEST_END(skb, __nest); \
681 (skb)->len; })
682
00768244 683#define RTA_NEST_CANCEL(skb, start) \
c52a3f89
TG		 684({ if (start) \
685 skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
00768244
TG		 686 -1; })
687
8f48bcd4
TG		 688#define RTA_GET_U8(rta) \
689({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \
690 goto rtattr_failure; \
691 *(u8 *) RTA_DATA(rta); })
692
693#define RTA_GET_U16(rta) \
694({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \
695 goto rtattr_failure; \
696 *(u16 *) RTA_DATA(rta); })
697
00768244
TG		 698#define RTA_GET_U32(rta) \
699({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \
700 goto rtattr_failure; \
701 *(u32 *) RTA_DATA(rta); })
702
703#define RTA_GET_U64(rta) \
704({ u64 _tmp; \
705 if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \
706 goto rtattr_failure; \
707 memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \
708 _tmp; })
709
8f48bcd4
TG		 710#define RTA_GET_FLAG(rta) (!!(rta))
711
00768244
TG		 712#define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ)
713#define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta)))
1da177e4
LT		 714
715static inline struct rtattr *
716__rta_reserve(struct sk_buff *skb, int attrtype, int attrlen)
717{
718 struct rtattr *rta;
719 int size = RTA_LENGTH(attrlen);
720
721 rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
722 rta->rta_type = attrtype;
723 rta->rta_len = size;
b3563c4f 724 memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
1da177e4
LT		 725 return rta;
726}
727
728#define __RTA_PUT(skb, attrtype, attrlen) \
729({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
730 goto rtattr_failure; \
731 __rta_reserve(skb, attrtype, attrlen); })
732
733extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
734
6756ae4b 735/* RTNL is used as a global lock for all changes to network configuration */
1da177e4 736extern void rtnl_lock(void);
1da177e4 737extern void rtnl_unlock(void);
6756ae4b 738extern int rtnl_trylock(void);
c9c1014b 739extern int rtnl_is_locked(void);
6756ae4b 740
1da177e4 741extern void rtnetlink_init(void);
6756ae4b 742extern void __rtnl_unlock(void);
1da177e4
LT		 743
744#define ASSERT_RTNL() do { \
c9c1014b 745 if (unlikely(!rtnl_is_locked())) { \
1da177e4
LT		 746 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
747 __FILE__, __LINE__); \
748 dump_stack(); \
749 } \
750} while(0)
751
9e762a4a
PM		 752static inline u32 rtm_get_table(struct rtattr **rta, u8 table)
753{
754 return RTA_GET_U32(rta[RTA_TABLE-1]);
755rtattr_failure:
756 return table;
757}
758
1da177e4
LT		 759#endif /* __KERNEL__ */
760
761
762#endif /* __LINUX_RTNETLINK_H */
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