projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
net: Fix routing tables with id > 255 for legacy software
[deliverable/linux.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
31910575
PY		 100 RTM_NEWNDUSEROPT = 68,
101#define RTM_NEWNDUSEROPT RTM_NEWNDUSEROPT
102
2a8cc6c8
YH		 103 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
d775fc09
TG		 110 __RTM_MAX,
111#define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1)
1da177e4
LT		 112};
113
db46edc6
TG		 114#define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE)
115#define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2)
f90a0a74
TG		 116#define RTM_FAM(cmd) (((cmd) - RTM_BASE) >> 2)
117
1da177e4
LT		 118/*
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 */
99cae7fc 213#define RTPROT_NTK 15 /* Netsukuku */
1da177e4
LT		 214
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 */
709772e6 249 RT_TABLE_COMPAT=252,
1da177e4
LT		 250 RT_TABLE_DEFAULT=253,
251 RT_TABLE_MAIN=254,
252 RT_TABLE_LOCAL=255,
b801f549 253 RT_TABLE_MAX=0xFFFFFFFF
1da177e4 254};
1da177e4
LT		 255
256
257/* Routing message attributes */
258
259enum rtattr_type_t
260{
261 RTA_UNSPEC,
262 RTA_DST,
263 RTA_SRC,
264 RTA_IIF,
265 RTA_OIF,
266 RTA_GATEWAY,
267 RTA_PRIORITY,
268 RTA_PREFSRC,
269 RTA_METRICS,
270 RTA_MULTIPATH,
1f9d11c7 271 RTA_PROTOINFO, /* no longer used */
1da177e4
LT		 272 RTA_FLOW,
273 RTA_CACHEINFO,
1f9d11c7 274 RTA_SESSION, /* no longer used */
e06e7c61 275 RTA_MP_ALGO, /* no longer used */
9e762a4a 276 RTA_TABLE,
1da177e4
LT		 277 __RTA_MAX
278};
279
280#define RTA_MAX (__RTA_MAX - 1)
281
282#define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg))))
283#define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg))
284
285/* RTM_MULTIPATH --- array of struct rtnexthop.
286 *
287 * "struct rtnexthop" describes all necessary nexthop information,
288 * i.e. parameters of path to a destination via this nexthop.
289 *
290 * At the moment it is impossible to set different prefsrc, mtu, window
291 * and rtt for different paths from multipath.
292 */
293
294struct rtnexthop
295{
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
321struct rta_cacheinfo
322{
323 __u32 rta_clntref;
324 __u32 rta_lastuse;
325 __s32 rta_expires;
326 __u32 rta_error;
327 __u32 rta_used;
328
329#define RTNETLINK_HAVE_PEERINFO 1
330 __u32 rta_id;
331 __u32 rta_ts;
332 __u32 rta_tsage;
333};
334
335/* RTM_METRICS --- array of struct rtattr with types of RTAX_* */
336
337enum
338{
339 RTAX_UNSPEC,
340#define RTAX_UNSPEC RTAX_UNSPEC
341 RTAX_LOCK,
342#define RTAX_LOCK RTAX_LOCK
343 RTAX_MTU,
344#define RTAX_MTU RTAX_MTU
345 RTAX_WINDOW,
346#define RTAX_WINDOW RTAX_WINDOW
347 RTAX_RTT,
348#define RTAX_RTT RTAX_RTT
349 RTAX_RTTVAR,
350#define RTAX_RTTVAR RTAX_RTTVAR
351 RTAX_SSTHRESH,
352#define RTAX_SSTHRESH RTAX_SSTHRESH
353 RTAX_CWND,
354#define RTAX_CWND RTAX_CWND
355 RTAX_ADVMSS,
356#define RTAX_ADVMSS RTAX_ADVMSS
357 RTAX_REORDERING,
358#define RTAX_REORDERING RTAX_REORDERING
359 RTAX_HOPLIMIT,
360#define RTAX_HOPLIMIT RTAX_HOPLIMIT
361 RTAX_INITCWND,
362#define RTAX_INITCWND RTAX_INITCWND
363 RTAX_FEATURES,
364#define RTAX_FEATURES RTAX_FEATURES
05bb1fad
DM		 365 RTAX_RTO_MIN,
366#define RTAX_RTO_MIN RTAX_RTO_MIN
1da177e4
LT		 367 __RTAX_MAX
368};
369
370#define RTAX_MAX (__RTAX_MAX - 1)
371
372#define RTAX_FEATURE_ECN 0x00000001
373#define RTAX_FEATURE_SACK 0x00000002
374#define RTAX_FEATURE_TIMESTAMP 0x00000004
375#define RTAX_FEATURE_ALLFRAG 0x00000008
376
377struct rta_session
378{
379 __u8 proto;
8a47077a
PM		 380 __u8 pad1;
381 __u16 pad2;
1da177e4
LT		 382
383 union {
384 struct {
385 __u16 sport;
386 __u16 dport;
387 } ports;
388
389 struct {
390 __u8 type;
391 __u8 code;
392 __u16 ident;
393 } icmpt;
394
395 __u32 spi;
396 } u;
397};
398
1da177e4
LT		 399/****
400 * General form of address family dependent message.
401 ****/
402
403struct rtgenmsg
404{
405 unsigned char rtgen_family;
406};
407
408/*****************************************************************
409 * Link layer specific messages.
410 ****/
411
412/* struct ifinfomsg
413 * passes link level specific information, not dependent
414 * on network protocol.
415 */
416
417struct ifinfomsg
418{
419 unsigned char ifi_family;
420 unsigned char __ifi_pad;
421 unsigned short ifi_type; /* ARPHRD_* */
422 int ifi_index; /* Link index */
423 unsigned ifi_flags; /* IFF_* flags */
424 unsigned ifi_change; /* IFF_* change mask */
425};
426
427/********************************************************************
428 * prefix information
429 ****/
430
431struct prefixmsg
432{
433 unsigned char prefix_family;
8a47077a
PM		 434 unsigned char prefix_pad1;
435 unsigned short prefix_pad2;
1da177e4
LT		 436 int prefix_ifindex;
437 unsigned char prefix_type;
438 unsigned char prefix_len;
439 unsigned char prefix_flags;
8a47077a 440 unsigned char prefix_pad3;
1da177e4
LT		 441};
442
443enum
444{
445 PREFIX_UNSPEC,
446 PREFIX_ADDRESS,
447 PREFIX_CACHEINFO,
448 __PREFIX_MAX
449};
450
451#define PREFIX_MAX (__PREFIX_MAX - 1)
452
453struct prefix_cacheinfo
454{
455 __u32 preferred_time;
456 __u32 valid_time;
457};
458
1da177e4
LT		 459
460/*****************************************************************
461 * Traffic control messages.
462 ****/
463
464struct tcmsg
465{
466 unsigned char tcm_family;
467 unsigned char tcm__pad1;
468 unsigned short tcm__pad2;
469 int tcm_ifindex;
470 __u32 tcm_handle;
471 __u32 tcm_parent;
472 __u32 tcm_info;
473};
474
475enum
476{
477 TCA_UNSPEC,
478 TCA_KIND,
479 TCA_OPTIONS,
480 TCA_STATS,
481 TCA_XSTATS,
482 TCA_RATE,
483 TCA_FCNT,
484 TCA_STATS2,
485 __TCA_MAX
486};
487
488#define TCA_MAX (__TCA_MAX - 1)
489
490#define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg))))
491#define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg))
492
31910575
PY		 493/********************************************************************
494 * Neighbor Discovery userland options
495 ****/
496
497struct nduseroptmsg
498{
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
510enum
511{
512 NDUSEROPT_UNSPEC,
513 NDUSEROPT_SRCADDR,
514 __NDUSEROPT_MAX
515};
516
517#define NDUSEROPT_MAX (__NDUSEROPT_MAX - 1)
518
ac6d439d
PM		 519#ifndef __KERNEL__
520/* RTnetlink multicast groups - backwards compatibility for userspace */
1da177e4
LT		 521#define RTMGRP_LINK 1
522#define RTMGRP_NOTIFY 2
523#define RTMGRP_NEIGH 4
524#define RTMGRP_TC 8
525
526#define RTMGRP_IPV4_IFADDR 0x10
527#define RTMGRP_IPV4_MROUTE 0x20
528#define RTMGRP_IPV4_ROUTE 0x40
a5cdc030 529#define RTMGRP_IPV4_RULE 0x80
1da177e4
LT		 530
531#define RTMGRP_IPV6_IFADDR 0x100
532#define RTMGRP_IPV6_MROUTE 0x200
533#define RTMGRP_IPV6_ROUTE 0x400
534#define RTMGRP_IPV6_IFINFO 0x800
535
536#define RTMGRP_DECnet_IFADDR 0x1000
537#define RTMGRP_DECnet_ROUTE 0x4000
538
539#define RTMGRP_IPV6_PREFIX 0x20000
ac6d439d
PM		 540#endif
541
542/* RTnetlink multicast groups */
543enum rtnetlink_groups {
544 RTNLGRP_NONE,
545#define RTNLGRP_NONE RTNLGRP_NONE
546 RTNLGRP_LINK,
547#define RTNLGRP_LINK RTNLGRP_LINK
548 RTNLGRP_NOTIFY,
549#define RTNLGRP_NOTIFY RTNLGRP_NOTIFY
550 RTNLGRP_NEIGH,
551#define RTNLGRP_NEIGH RTNLGRP_NEIGH
552 RTNLGRP_TC,
553#define RTNLGRP_TC RTNLGRP_TC
554 RTNLGRP_IPV4_IFADDR,
555#define RTNLGRP_IPV4_IFADDR RTNLGRP_IPV4_IFADDR
556 RTNLGRP_IPV4_MROUTE,
557#define RTNLGRP_IPV4_MROUTE RTNLGRP_IPV4_MROUTE
558 RTNLGRP_IPV4_ROUTE,
559#define RTNLGRP_IPV4_ROUTE RTNLGRP_IPV4_ROUTE
a5cdc030
PM		 560 RTNLGRP_IPV4_RULE,
561#define RTNLGRP_IPV4_RULE RTNLGRP_IPV4_RULE
ac6d439d
PM		 562 RTNLGRP_IPV6_IFADDR,
563#define RTNLGRP_IPV6_IFADDR RTNLGRP_IPV6_IFADDR
564 RTNLGRP_IPV6_MROUTE,
565#define RTNLGRP_IPV6_MROUTE RTNLGRP_IPV6_MROUTE
566 RTNLGRP_IPV6_ROUTE,
567#define RTNLGRP_IPV6_ROUTE RTNLGRP_IPV6_ROUTE
568 RTNLGRP_IPV6_IFINFO,
569#define RTNLGRP_IPV6_IFINFO RTNLGRP_IPV6_IFINFO
570 RTNLGRP_DECnet_IFADDR,
571#define RTNLGRP_DECnet_IFADDR RTNLGRP_DECnet_IFADDR
6b80ebed 572 RTNLGRP_NOP2,
ac6d439d
PM		 573 RTNLGRP_DECnet_ROUTE,
574#define RTNLGRP_DECnet_ROUTE RTNLGRP_DECnet_ROUTE
a8731cbf
SW		 575 RTNLGRP_DECnet_RULE,
576#define RTNLGRP_DECnet_RULE RTNLGRP_DECnet_RULE
6b80ebed 577 RTNLGRP_NOP4,
ac6d439d
PM		 578 RTNLGRP_IPV6_PREFIX,
579#define RTNLGRP_IPV6_PREFIX RTNLGRP_IPV6_PREFIX
101367c2
TG		 580 RTNLGRP_IPV6_RULE,
581#define RTNLGRP_IPV6_RULE RTNLGRP_IPV6_RULE
31910575
PY		 582 RTNLGRP_ND_USEROPT,
583#define RTNLGRP_ND_USEROPT RTNLGRP_ND_USEROPT
ac6d439d
PM		 584 __RTNLGRP_MAX
585};
586#define RTNLGRP_MAX (__RTNLGRP_MAX - 1)
1da177e4
LT		 587
588/* TC action piece */
589struct tcamsg
590{
591 unsigned char tca_family;
592 unsigned char tca__pad1;
593 unsigned short tca__pad2;
594};
595#define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg))))
596#define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg))
597#define TCA_ACT_TAB 1 /* attr type must be >=1 */
598#define TCAA_MAX 1
599
600/* End of information exported to user level */
601
602#ifdef __KERNEL__
603
6756ae4b 604#include <linux/mutex.h>
1da177e4 605
1da177e4
LT		 606static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
607{
608 int len = strlen(str) + 1;
609 return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len);
610}
611
97c53cac
DL		 612extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo);
613extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid);
614extern int rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group,
97676b6b 615 struct nlmsghdr *nlh, gfp_t flags);
97c53cac 616extern void rtnl_set_sk_err(struct net *net, u32 group, int error);
1da177e4 617extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
e3703b3d
TG		 618extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
619 u32 id, u32 ts, u32 tsage, long expires,
620 u32 error);
1da177e4
LT		 621
622extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data);
623
624#define RTA_PUT(skb, attrtype, attrlen, data) \
625({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
626 goto rtattr_failure; \
627 __rta_fill(skb, attrtype, attrlen, data); })
628
d675c989 629#define RTA_APPEND(skb, attrlen, data) \
1da177e4
LT		 630({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \
631 goto rtattr_failure; \
d675c989
TG		 632 memcpy(skb_put(skb, attrlen), data, attrlen); })
633
634#define RTA_PUT_NOHDR(skb, attrlen, data) \
b3563c4f 635({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \
27a884dc 636 memset(skb_tail_pointer(skb) - (RTA_ALIGN(attrlen) - attrlen), 0, \
b3563c4f 637 RTA_ALIGN(attrlen) - attrlen); })
00768244 638
8f48bcd4
TG		 639#define RTA_PUT_U8(skb, attrtype, value) \
640({ u8 _tmp = (value); \
641 RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); })
642
643#define RTA_PUT_U16(skb, attrtype, value) \
644({ u16 _tmp = (value); \
645 RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); })
646
00768244
TG		 647#define RTA_PUT_U32(skb, attrtype, value) \
648({ u32 _tmp = (value); \
649 RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); })
650
651#define RTA_PUT_U64(skb, attrtype, value) \
652({ u64 _tmp = (value); \
653 RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); })
654
655#define RTA_PUT_SECS(skb, attrtype, value) \
656 RTA_PUT_U64(skb, attrtype, (value) / HZ)
657
658#define RTA_PUT_MSECS(skb, attrtype, value) \
659 RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value))
660
661#define RTA_PUT_STRING(skb, attrtype, value) \
662 RTA_PUT(skb, attrtype, strlen(value) + 1, value)
663
8f48bcd4
TG		 664#define RTA_PUT_FLAG(skb, attrtype) \
665 RTA_PUT(skb, attrtype, 0, NULL);
666
00768244 667#define RTA_NEST(skb, type) \
27a884dc 668({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
00768244
TG		 669 RTA_PUT(skb, type, 0, NULL); \
670 __start; })
671
672#define RTA_NEST_END(skb, start) \
27a884dc 673({ (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
00768244
TG		 674 (skb)->len; })
675
afdc3238
PM		 676#define RTA_NEST_COMPAT(skb, type, attrlen, data) \
677({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
678 RTA_PUT(skb, type, attrlen, data); \
679 RTA_NEST(skb, type); \
680 __start; })
681
682#define RTA_NEST_COMPAT_END(skb, start) \
683({ struct rtattr *__nest = (void *)(start) + NLMSG_ALIGN((start)->rta_len); \
684 (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
685 RTA_NEST_END(skb, __nest); \
686 (skb)->len; })
687
00768244 688#define RTA_NEST_CANCEL(skb, start) \
c52a3f89
TG		 689({ if (start) \
690 skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
00768244
TG		 691 -1; })
692
8f48bcd4
TG		 693#define RTA_GET_U8(rta) \
694({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \
695 goto rtattr_failure; \
696 *(u8 *) RTA_DATA(rta); })
697
698#define RTA_GET_U16(rta) \
699({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \
700 goto rtattr_failure; \
701 *(u16 *) RTA_DATA(rta); })
702
00768244
TG		 703#define RTA_GET_U32(rta) \
704({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \
705 goto rtattr_failure; \
706 *(u32 *) RTA_DATA(rta); })
707
708#define RTA_GET_U64(rta) \
709({ u64 _tmp; \
710 if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \
711 goto rtattr_failure; \
712 memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \
713 _tmp; })
714
8f48bcd4
TG		 715#define RTA_GET_FLAG(rta) (!!(rta))
716
00768244
TG		 717#define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ)
718#define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta)))
1da177e4
LT		 719
720static inline struct rtattr *
721__rta_reserve(struct sk_buff *skb, int attrtype, int attrlen)
722{
723 struct rtattr *rta;
724 int size = RTA_LENGTH(attrlen);
725
726 rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
727 rta->rta_type = attrtype;
728 rta->rta_len = size;
b3563c4f 729 memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
1da177e4
LT		 730 return rta;
731}
732
733#define __RTA_PUT(skb, attrtype, attrlen) \
734({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
735 goto rtattr_failure; \
736 __rta_reserve(skb, attrtype, attrlen); })
737
738extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
739
6756ae4b 740/* RTNL is used as a global lock for all changes to network configuration */
1da177e4 741extern void rtnl_lock(void);
1da177e4 742extern void rtnl_unlock(void);
6756ae4b 743extern int rtnl_trylock(void);
c9c1014b 744extern int rtnl_is_locked(void);
6756ae4b 745
1da177e4 746extern void rtnetlink_init(void);
6756ae4b 747extern void __rtnl_unlock(void);
1da177e4
LT		 748
749#define ASSERT_RTNL() do { \
c9c1014b 750 if (unlikely(!rtnl_is_locked())) { \
1da177e4
LT		 751 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
752 __FILE__, __LINE__); \
753 dump_stack(); \
754 } \
755} while(0)
756
757#define BUG_TRAP(x) do { \
758 if (unlikely(!(x))) { \
759 printk(KERN_ERR "KERNEL: assertion (%s) failed at %s (%d)\n", \
760 #x, __FILE__ , __LINE__); \
761 } \
762} while(0)
763
9e762a4a
PM		 764static inline u32 rtm_get_table(struct rtattr **rta, u8 table)
765{
766 return RTA_GET_U32(rta[RTA_TABLE-1]);
767rtattr_failure:
768 return table;
769}
770
1da177e4
LT		 771#endif /* __KERNEL__ */
772
773
774#endif /* __LINUX_RTNETLINK_H */
Linux kernel - Deliverables
This page took 0.606342 seconds and 5 git commands to generate.