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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 | ||
15 | enum { | |
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 | ||
114 | struct 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 | ||
141 | struct 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 | ||
158 | enum | |
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 | ||
216 | enum 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 | ||
235 | enum 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 | ||
248 | enum 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, | |
e06e7c61 | 264 | RTA_MP_ALGO, /* no longer used */ |
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 | ||
283 | struct 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 | ||
310 | struct 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 | ||
326 | enum | |
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 | ||
364 | struct 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 | ||
390 | struct 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 | ||
404 | struct 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 | ||
418 | struct 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 | ||
430 | enum | |
431 | { | |
432 | PREFIX_UNSPEC, | |
433 | PREFIX_ADDRESS, | |
434 | PREFIX_CACHEINFO, | |
435 | __PREFIX_MAX | |
436 | }; | |
437 | ||
438 | #define PREFIX_MAX (__PREFIX_MAX - 1) | |
439 | ||
440 | struct prefix_cacheinfo | |
441 | { | |
442 | __u32 preferred_time; | |
443 | __u32 valid_time; | |
444 | }; | |
445 | ||
1da177e4 LT |
446 | |
447 | /***************************************************************** | |
448 | * Traffic control messages. | |
449 | ****/ | |
450 | ||
451 | struct 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 | ||
462 | enum | |
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 */ | |
504 | enum 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 */ | |
548 | struct 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 | |
565 | extern size_t rtattr_strlcpy(char *dest, const struct rtattr *rta, size_t size); | |
566 | static __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 | ||
572 | extern int rtattr_parse(struct rtattr *tb[], int maxattr, struct rtattr *rta, int len); | |
2371baa4 PM |
573 | extern int __rtattr_parse_nested_compat(struct rtattr *tb[], int maxattr, |
574 | struct rtattr *rta, int len); | |
1da177e4 LT |
575 | |
576 | #define rtattr_parse_nested(tb, max, rta) \ | |
577 | rtattr_parse((tb), (max), RTA_DATA((rta)), RTA_PAYLOAD((rta))) | |
578 | ||
2371baa4 PM |
579 | #define rtattr_parse_nested_compat(tb, max, rta, data, len) \ |
580 | ({ data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \ | |
581 | __rtattr_parse_nested_compat(tb, max, rta, len); }) | |
582 | ||
1da177e4 | 583 | extern int rtnetlink_send(struct sk_buff *skb, u32 pid, u32 group, int echo); |
2942e900 | 584 | extern int rtnl_unicast(struct sk_buff *skb, u32 pid); |
97676b6b TG |
585 | extern int rtnl_notify(struct sk_buff *skb, u32 pid, u32 group, |
586 | struct nlmsghdr *nlh, gfp_t flags); | |
587 | extern void rtnl_set_sk_err(u32 group, int error); | |
1da177e4 | 588 | extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics); |
e3703b3d TG |
589 | extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, |
590 | u32 id, u32 ts, u32 tsage, long expires, | |
591 | u32 error); | |
1da177e4 LT |
592 | |
593 | extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data); | |
594 | ||
595 | #define RTA_PUT(skb, attrtype, attrlen, data) \ | |
596 | ({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \ | |
597 | goto rtattr_failure; \ | |
598 | __rta_fill(skb, attrtype, attrlen, data); }) | |
599 | ||
d675c989 | 600 | #define RTA_APPEND(skb, attrlen, data) \ |
1da177e4 LT |
601 | ({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \ |
602 | goto rtattr_failure; \ | |
d675c989 TG |
603 | memcpy(skb_put(skb, attrlen), data, attrlen); }) |
604 | ||
605 | #define RTA_PUT_NOHDR(skb, attrlen, data) \ | |
b3563c4f | 606 | ({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \ |
27a884dc | 607 | memset(skb_tail_pointer(skb) - (RTA_ALIGN(attrlen) - attrlen), 0, \ |
b3563c4f | 608 | RTA_ALIGN(attrlen) - attrlen); }) |
00768244 | 609 | |
8f48bcd4 TG |
610 | #define RTA_PUT_U8(skb, attrtype, value) \ |
611 | ({ u8 _tmp = (value); \ | |
612 | RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); }) | |
613 | ||
614 | #define RTA_PUT_U16(skb, attrtype, value) \ | |
615 | ({ u16 _tmp = (value); \ | |
616 | RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); }) | |
617 | ||
00768244 TG |
618 | #define RTA_PUT_U32(skb, attrtype, value) \ |
619 | ({ u32 _tmp = (value); \ | |
620 | RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); }) | |
621 | ||
622 | #define RTA_PUT_U64(skb, attrtype, value) \ | |
623 | ({ u64 _tmp = (value); \ | |
624 | RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); }) | |
625 | ||
626 | #define RTA_PUT_SECS(skb, attrtype, value) \ | |
627 | RTA_PUT_U64(skb, attrtype, (value) / HZ) | |
628 | ||
629 | #define RTA_PUT_MSECS(skb, attrtype, value) \ | |
630 | RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value)) | |
631 | ||
632 | #define RTA_PUT_STRING(skb, attrtype, value) \ | |
633 | RTA_PUT(skb, attrtype, strlen(value) + 1, value) | |
634 | ||
8f48bcd4 TG |
635 | #define RTA_PUT_FLAG(skb, attrtype) \ |
636 | RTA_PUT(skb, attrtype, 0, NULL); | |
637 | ||
00768244 | 638 | #define RTA_NEST(skb, type) \ |
27a884dc | 639 | ({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \ |
00768244 TG |
640 | RTA_PUT(skb, type, 0, NULL); \ |
641 | __start; }) | |
642 | ||
643 | #define RTA_NEST_END(skb, start) \ | |
27a884dc | 644 | ({ (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \ |
00768244 TG |
645 | (skb)->len; }) |
646 | ||
afdc3238 PM |
647 | #define RTA_NEST_COMPAT(skb, type, attrlen, data) \ |
648 | ({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \ | |
649 | RTA_PUT(skb, type, attrlen, data); \ | |
650 | RTA_NEST(skb, type); \ | |
651 | __start; }) | |
652 | ||
653 | #define RTA_NEST_COMPAT_END(skb, start) \ | |
654 | ({ struct rtattr *__nest = (void *)(start) + NLMSG_ALIGN((start)->rta_len); \ | |
655 | (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \ | |
656 | RTA_NEST_END(skb, __nest); \ | |
657 | (skb)->len; }) | |
658 | ||
00768244 | 659 | #define RTA_NEST_CANCEL(skb, start) \ |
c52a3f89 TG |
660 | ({ if (start) \ |
661 | skb_trim(skb, (unsigned char *) (start) - (skb)->data); \ | |
00768244 TG |
662 | -1; }) |
663 | ||
8f48bcd4 TG |
664 | #define RTA_GET_U8(rta) \ |
665 | ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \ | |
666 | goto rtattr_failure; \ | |
667 | *(u8 *) RTA_DATA(rta); }) | |
668 | ||
669 | #define RTA_GET_U16(rta) \ | |
670 | ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \ | |
671 | goto rtattr_failure; \ | |
672 | *(u16 *) RTA_DATA(rta); }) | |
673 | ||
00768244 TG |
674 | #define RTA_GET_U32(rta) \ |
675 | ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \ | |
676 | goto rtattr_failure; \ | |
677 | *(u32 *) RTA_DATA(rta); }) | |
678 | ||
679 | #define RTA_GET_U64(rta) \ | |
680 | ({ u64 _tmp; \ | |
681 | if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \ | |
682 | goto rtattr_failure; \ | |
683 | memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \ | |
684 | _tmp; }) | |
685 | ||
8f48bcd4 TG |
686 | #define RTA_GET_FLAG(rta) (!!(rta)) |
687 | ||
00768244 TG |
688 | #define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ) |
689 | #define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta))) | |
1da177e4 LT |
690 | |
691 | static inline struct rtattr * | |
692 | __rta_reserve(struct sk_buff *skb, int attrtype, int attrlen) | |
693 | { | |
694 | struct rtattr *rta; | |
695 | int size = RTA_LENGTH(attrlen); | |
696 | ||
697 | rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size)); | |
698 | rta->rta_type = attrtype; | |
699 | rta->rta_len = size; | |
b3563c4f | 700 | memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size); |
1da177e4 LT |
701 | return rta; |
702 | } | |
703 | ||
704 | #define __RTA_PUT(skb, attrtype, attrlen) \ | |
705 | ({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \ | |
706 | goto rtattr_failure; \ | |
707 | __rta_reserve(skb, attrtype, attrlen); }) | |
708 | ||
709 | extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change); | |
710 | ||
6756ae4b | 711 | /* RTNL is used as a global lock for all changes to network configuration */ |
1da177e4 | 712 | extern void rtnl_lock(void); |
1da177e4 | 713 | extern void rtnl_unlock(void); |
6756ae4b SH |
714 | extern int rtnl_trylock(void); |
715 | ||
1da177e4 | 716 | extern void rtnetlink_init(void); |
6756ae4b | 717 | extern void __rtnl_unlock(void); |
1da177e4 LT |
718 | |
719 | #define ASSERT_RTNL() do { \ | |
6756ae4b SH |
720 | if (unlikely(rtnl_trylock())) { \ |
721 | rtnl_unlock(); \ | |
1da177e4 LT |
722 | printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \ |
723 | __FILE__, __LINE__); \ | |
724 | dump_stack(); \ | |
725 | } \ | |
726 | } while(0) | |
727 | ||
728 | #define BUG_TRAP(x) do { \ | |
729 | if (unlikely(!(x))) { \ | |
730 | printk(KERN_ERR "KERNEL: assertion (%s) failed at %s (%d)\n", \ | |
731 | #x, __FILE__ , __LINE__); \ | |
732 | } \ | |
733 | } while(0) | |
734 | ||
9e762a4a PM |
735 | static inline u32 rtm_get_table(struct rtattr **rta, u8 table) |
736 | { | |
737 | return RTA_GET_U32(rta[RTA_TABLE-1]); | |
738 | rtattr_failure: | |
739 | return table; | |
740 | } | |
741 | ||
1da177e4 LT |
742 | #endif /* __KERNEL__ */ |
743 | ||
744 | ||
745 | #endif /* __LINUX_RTNETLINK_H */ |