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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> |
1da177e4 LT |
6 | |
7 | /**** | |
8 | * Routing/neighbour discovery messages. | |
9 | ****/ | |
10 | ||
11 | /* Types of messages */ | |
12 | ||
13 | enum { | |
14 | RTM_BASE = 16, | |
15 | #define RTM_BASE RTM_BASE | |
16 | ||
17 | RTM_NEWLINK = 16, | |
18 | #define RTM_NEWLINK RTM_NEWLINK | |
19 | RTM_DELLINK, | |
20 | #define RTM_DELLINK RTM_DELLINK | |
21 | RTM_GETLINK, | |
22 | #define RTM_GETLINK RTM_GETLINK | |
23 | RTM_SETLINK, | |
24 | #define RTM_SETLINK RTM_SETLINK | |
25 | ||
26 | RTM_NEWADDR = 20, | |
27 | #define RTM_NEWADDR RTM_NEWADDR | |
28 | RTM_DELADDR, | |
29 | #define RTM_DELADDR RTM_DELADDR | |
30 | RTM_GETADDR, | |
31 | #define RTM_GETADDR RTM_GETADDR | |
32 | ||
33 | RTM_NEWROUTE = 24, | |
34 | #define RTM_NEWROUTE RTM_NEWROUTE | |
35 | RTM_DELROUTE, | |
36 | #define RTM_DELROUTE RTM_DELROUTE | |
37 | RTM_GETROUTE, | |
38 | #define RTM_GETROUTE RTM_GETROUTE | |
39 | ||
40 | RTM_NEWNEIGH = 28, | |
41 | #define RTM_NEWNEIGH RTM_NEWNEIGH | |
42 | RTM_DELNEIGH, | |
43 | #define RTM_DELNEIGH RTM_DELNEIGH | |
44 | RTM_GETNEIGH, | |
45 | #define RTM_GETNEIGH RTM_GETNEIGH | |
46 | ||
47 | RTM_NEWRULE = 32, | |
48 | #define RTM_NEWRULE RTM_NEWRULE | |
49 | RTM_DELRULE, | |
50 | #define RTM_DELRULE RTM_DELRULE | |
51 | RTM_GETRULE, | |
52 | #define RTM_GETRULE RTM_GETRULE | |
53 | ||
54 | RTM_NEWQDISC = 36, | |
55 | #define RTM_NEWQDISC RTM_NEWQDISC | |
56 | RTM_DELQDISC, | |
57 | #define RTM_DELQDISC RTM_DELQDISC | |
58 | RTM_GETQDISC, | |
59 | #define RTM_GETQDISC RTM_GETQDISC | |
60 | ||
61 | RTM_NEWTCLASS = 40, | |
62 | #define RTM_NEWTCLASS RTM_NEWTCLASS | |
63 | RTM_DELTCLASS, | |
64 | #define RTM_DELTCLASS RTM_DELTCLASS | |
65 | RTM_GETTCLASS, | |
66 | #define RTM_GETTCLASS RTM_GETTCLASS | |
67 | ||
68 | RTM_NEWTFILTER = 44, | |
69 | #define RTM_NEWTFILTER RTM_NEWTFILTER | |
70 | RTM_DELTFILTER, | |
71 | #define RTM_DELTFILTER RTM_DELTFILTER | |
72 | RTM_GETTFILTER, | |
73 | #define RTM_GETTFILTER RTM_GETTFILTER | |
74 | ||
75 | RTM_NEWACTION = 48, | |
76 | #define RTM_NEWACTION RTM_NEWACTION | |
77 | RTM_DELACTION, | |
78 | #define RTM_DELACTION RTM_DELACTION | |
79 | RTM_GETACTION, | |
80 | #define RTM_GETACTION RTM_GETACTION | |
81 | ||
82 | RTM_NEWPREFIX = 52, | |
83 | #define RTM_NEWPREFIX RTM_NEWPREFIX | |
1da177e4 LT |
84 | |
85 | RTM_GETMULTICAST = 58, | |
86 | #define RTM_GETMULTICAST RTM_GETMULTICAST | |
87 | ||
88 | RTM_GETANYCAST = 62, | |
89 | #define RTM_GETANYCAST RTM_GETANYCAST | |
90 | ||
c7fb64db TG |
91 | RTM_NEWNEIGHTBL = 64, |
92 | #define RTM_NEWNEIGHTBL RTM_NEWNEIGHTBL | |
93 | RTM_GETNEIGHTBL = 66, | |
94 | #define RTM_GETNEIGHTBL RTM_GETNEIGHTBL | |
95 | RTM_SETNEIGHTBL, | |
96 | #define RTM_SETNEIGHTBL RTM_SETNEIGHTBL | |
97 | ||
d775fc09 TG |
98 | __RTM_MAX, |
99 | #define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1) | |
1da177e4 LT |
100 | }; |
101 | ||
db46edc6 TG |
102 | #define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE) |
103 | #define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2) | |
f90a0a74 TG |
104 | #define RTM_FAM(cmd) (((cmd) - RTM_BASE) >> 2) |
105 | ||
1da177e4 LT |
106 | /* |
107 | Generic structure for encapsulation of optional route information. | |
108 | It is reminiscent of sockaddr, but with sa_family replaced | |
109 | with attribute type. | |
110 | */ | |
111 | ||
112 | struct rtattr | |
113 | { | |
114 | unsigned short rta_len; | |
115 | unsigned short rta_type; | |
116 | }; | |
117 | ||
118 | /* Macros to handle rtattributes */ | |
119 | ||
120 | #define RTA_ALIGNTO 4 | |
121 | #define RTA_ALIGN(len) ( ((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1) ) | |
122 | #define RTA_OK(rta,len) ((len) >= (int)sizeof(struct rtattr) && \ | |
123 | (rta)->rta_len >= sizeof(struct rtattr) && \ | |
124 | (rta)->rta_len <= (len)) | |
125 | #define RTA_NEXT(rta,attrlen) ((attrlen) -= RTA_ALIGN((rta)->rta_len), \ | |
126 | (struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len))) | |
127 | #define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len)) | |
128 | #define RTA_SPACE(len) RTA_ALIGN(RTA_LENGTH(len)) | |
129 | #define RTA_DATA(rta) ((void*)(((char*)(rta)) + RTA_LENGTH(0))) | |
130 | #define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0)) | |
131 | ||
132 | ||
133 | ||
134 | ||
135 | /****************************************************************************** | |
136 | * Definitions used in routing table administration. | |
137 | ****/ | |
138 | ||
139 | struct rtmsg | |
140 | { | |
141 | unsigned char rtm_family; | |
142 | unsigned char rtm_dst_len; | |
143 | unsigned char rtm_src_len; | |
144 | unsigned char rtm_tos; | |
145 | ||
146 | unsigned char rtm_table; /* Routing table id */ | |
147 | unsigned char rtm_protocol; /* Routing protocol; see below */ | |
148 | unsigned char rtm_scope; /* See below */ | |
149 | unsigned char rtm_type; /* See below */ | |
150 | ||
151 | unsigned rtm_flags; | |
152 | }; | |
153 | ||
154 | /* rtm_type */ | |
155 | ||
156 | enum | |
157 | { | |
158 | RTN_UNSPEC, | |
159 | RTN_UNICAST, /* Gateway or direct route */ | |
160 | RTN_LOCAL, /* Accept locally */ | |
161 | RTN_BROADCAST, /* Accept locally as broadcast, | |
162 | send as broadcast */ | |
163 | RTN_ANYCAST, /* Accept locally as broadcast, | |
164 | but send as unicast */ | |
165 | RTN_MULTICAST, /* Multicast route */ | |
166 | RTN_BLACKHOLE, /* Drop */ | |
167 | RTN_UNREACHABLE, /* Destination is unreachable */ | |
168 | RTN_PROHIBIT, /* Administratively prohibited */ | |
169 | RTN_THROW, /* Not in this table */ | |
170 | RTN_NAT, /* Translate this address */ | |
171 | RTN_XRESOLVE, /* Use external resolver */ | |
172 | __RTN_MAX | |
173 | }; | |
174 | ||
175 | #define RTN_MAX (__RTN_MAX - 1) | |
176 | ||
177 | ||
178 | /* rtm_protocol */ | |
179 | ||
180 | #define RTPROT_UNSPEC 0 | |
181 | #define RTPROT_REDIRECT 1 /* Route installed by ICMP redirects; | |
182 | not used by current IPv4 */ | |
183 | #define RTPROT_KERNEL 2 /* Route installed by kernel */ | |
184 | #define RTPROT_BOOT 3 /* Route installed during boot */ | |
185 | #define RTPROT_STATIC 4 /* Route installed by administrator */ | |
186 | ||
187 | /* Values of protocol >= RTPROT_STATIC are not interpreted by kernel; | |
188 | they are just passed from user and back as is. | |
189 | It will be used by hypothetical multiple routing daemons. | |
190 | Note that protocol values should be standardized in order to | |
191 | avoid conflicts. | |
192 | */ | |
193 | ||
194 | #define RTPROT_GATED 8 /* Apparently, GateD */ | |
195 | #define RTPROT_RA 9 /* RDISC/ND router advertisements */ | |
196 | #define RTPROT_MRT 10 /* Merit MRT */ | |
197 | #define RTPROT_ZEBRA 11 /* Zebra */ | |
198 | #define RTPROT_BIRD 12 /* BIRD */ | |
199 | #define RTPROT_DNROUTED 13 /* DECnet routing daemon */ | |
200 | #define RTPROT_XORP 14 /* XORP */ | |
99cae7fc | 201 | #define RTPROT_NTK 15 /* Netsukuku */ |
1da177e4 LT |
202 | |
203 | /* rtm_scope | |
204 | ||
205 | Really it is not scope, but sort of distance to the destination. | |
206 | NOWHERE are reserved for not existing destinations, HOST is our | |
207 | local addresses, LINK are destinations, located on directly attached | |
208 | link and UNIVERSE is everywhere in the Universe. | |
209 | ||
210 | Intermediate values are also possible f.e. interior routes | |
211 | could be assigned a value between UNIVERSE and LINK. | |
212 | */ | |
213 | ||
214 | enum rt_scope_t | |
215 | { | |
216 | RT_SCOPE_UNIVERSE=0, | |
217 | /* User defined values */ | |
218 | RT_SCOPE_SITE=200, | |
219 | RT_SCOPE_LINK=253, | |
220 | RT_SCOPE_HOST=254, | |
221 | RT_SCOPE_NOWHERE=255 | |
222 | }; | |
223 | ||
224 | /* rtm_flags */ | |
225 | ||
226 | #define RTM_F_NOTIFY 0x100 /* Notify user of route change */ | |
227 | #define RTM_F_CLONED 0x200 /* This route is cloned */ | |
228 | #define RTM_F_EQUALIZE 0x400 /* Multipath equalizer: NI */ | |
229 | #define RTM_F_PREFIX 0x800 /* Prefix addresses */ | |
230 | ||
231 | /* Reserved table identifiers */ | |
232 | ||
233 | enum rt_class_t | |
234 | { | |
235 | RT_TABLE_UNSPEC=0, | |
236 | /* User defined values */ | |
237 | RT_TABLE_DEFAULT=253, | |
238 | RT_TABLE_MAIN=254, | |
239 | RT_TABLE_LOCAL=255, | |
b801f549 | 240 | RT_TABLE_MAX=0xFFFFFFFF |
1da177e4 | 241 | }; |
1da177e4 LT |
242 | |
243 | ||
244 | /* Routing message attributes */ | |
245 | ||
246 | enum rtattr_type_t | |
247 | { | |
248 | RTA_UNSPEC, | |
249 | RTA_DST, | |
250 | RTA_SRC, | |
251 | RTA_IIF, | |
252 | RTA_OIF, | |
253 | RTA_GATEWAY, | |
254 | RTA_PRIORITY, | |
255 | RTA_PREFSRC, | |
256 | RTA_METRICS, | |
257 | RTA_MULTIPATH, | |
258 | RTA_PROTOINFO, | |
259 | RTA_FLOW, | |
260 | RTA_CACHEINFO, | |
261 | RTA_SESSION, | |
262 | RTA_MP_ALGO, | |
9e762a4a | 263 | RTA_TABLE, |
1da177e4 LT |
264 | __RTA_MAX |
265 | }; | |
266 | ||
267 | #define RTA_MAX (__RTA_MAX - 1) | |
268 | ||
269 | #define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg)))) | |
270 | #define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg)) | |
271 | ||
272 | /* RTM_MULTIPATH --- array of struct rtnexthop. | |
273 | * | |
274 | * "struct rtnexthop" describes all necessary nexthop information, | |
275 | * i.e. parameters of path to a destination via this nexthop. | |
276 | * | |
277 | * At the moment it is impossible to set different prefsrc, mtu, window | |
278 | * and rtt for different paths from multipath. | |
279 | */ | |
280 | ||
281 | struct rtnexthop | |
282 | { | |
283 | unsigned short rtnh_len; | |
284 | unsigned char rtnh_flags; | |
285 | unsigned char rtnh_hops; | |
286 | int rtnh_ifindex; | |
287 | }; | |
288 | ||
289 | /* rtnh_flags */ | |
290 | ||
291 | #define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */ | |
292 | #define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */ | |
293 | #define RTNH_F_ONLINK 4 /* Gateway is forced on link */ | |
294 | ||
295 | /* Macros to handle hexthops */ | |
296 | ||
297 | #define RTNH_ALIGNTO 4 | |
298 | #define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) ) | |
299 | #define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \ | |
300 | ((int)(rtnh)->rtnh_len) <= (len)) | |
301 | #define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len))) | |
302 | #define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len)) | |
303 | #define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len)) | |
304 | #define RTNH_DATA(rtnh) ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0))) | |
305 | ||
306 | /* RTM_CACHEINFO */ | |
307 | ||
308 | struct rta_cacheinfo | |
309 | { | |
310 | __u32 rta_clntref; | |
311 | __u32 rta_lastuse; | |
312 | __s32 rta_expires; | |
313 | __u32 rta_error; | |
314 | __u32 rta_used; | |
315 | ||
316 | #define RTNETLINK_HAVE_PEERINFO 1 | |
317 | __u32 rta_id; | |
318 | __u32 rta_ts; | |
319 | __u32 rta_tsage; | |
320 | }; | |
321 | ||
322 | /* RTM_METRICS --- array of struct rtattr with types of RTAX_* */ | |
323 | ||
324 | enum | |
325 | { | |
326 | RTAX_UNSPEC, | |
327 | #define RTAX_UNSPEC RTAX_UNSPEC | |
328 | RTAX_LOCK, | |
329 | #define RTAX_LOCK RTAX_LOCK | |
330 | RTAX_MTU, | |
331 | #define RTAX_MTU RTAX_MTU | |
332 | RTAX_WINDOW, | |
333 | #define RTAX_WINDOW RTAX_WINDOW | |
334 | RTAX_RTT, | |
335 | #define RTAX_RTT RTAX_RTT | |
336 | RTAX_RTTVAR, | |
337 | #define RTAX_RTTVAR RTAX_RTTVAR | |
338 | RTAX_SSTHRESH, | |
339 | #define RTAX_SSTHRESH RTAX_SSTHRESH | |
340 | RTAX_CWND, | |
341 | #define RTAX_CWND RTAX_CWND | |
342 | RTAX_ADVMSS, | |
343 | #define RTAX_ADVMSS RTAX_ADVMSS | |
344 | RTAX_REORDERING, | |
345 | #define RTAX_REORDERING RTAX_REORDERING | |
346 | RTAX_HOPLIMIT, | |
347 | #define RTAX_HOPLIMIT RTAX_HOPLIMIT | |
348 | RTAX_INITCWND, | |
349 | #define RTAX_INITCWND RTAX_INITCWND | |
350 | RTAX_FEATURES, | |
351 | #define RTAX_FEATURES RTAX_FEATURES | |
352 | __RTAX_MAX | |
353 | }; | |
354 | ||
355 | #define RTAX_MAX (__RTAX_MAX - 1) | |
356 | ||
357 | #define RTAX_FEATURE_ECN 0x00000001 | |
358 | #define RTAX_FEATURE_SACK 0x00000002 | |
359 | #define RTAX_FEATURE_TIMESTAMP 0x00000004 | |
360 | #define RTAX_FEATURE_ALLFRAG 0x00000008 | |
361 | ||
362 | struct rta_session | |
363 | { | |
364 | __u8 proto; | |
8a47077a PM |
365 | __u8 pad1; |
366 | __u16 pad2; | |
1da177e4 LT |
367 | |
368 | union { | |
369 | struct { | |
370 | __u16 sport; | |
371 | __u16 dport; | |
372 | } ports; | |
373 | ||
374 | struct { | |
375 | __u8 type; | |
376 | __u8 code; | |
377 | __u16 ident; | |
378 | } icmpt; | |
379 | ||
380 | __u32 spi; | |
381 | } u; | |
382 | }; | |
383 | ||
1da177e4 LT |
384 | /**** |
385 | * General form of address family dependent message. | |
386 | ****/ | |
387 | ||
388 | struct rtgenmsg | |
389 | { | |
390 | unsigned char rtgen_family; | |
391 | }; | |
392 | ||
393 | /***************************************************************** | |
394 | * Link layer specific messages. | |
395 | ****/ | |
396 | ||
397 | /* struct ifinfomsg | |
398 | * passes link level specific information, not dependent | |
399 | * on network protocol. | |
400 | */ | |
401 | ||
402 | struct ifinfomsg | |
403 | { | |
404 | unsigned char ifi_family; | |
405 | unsigned char __ifi_pad; | |
406 | unsigned short ifi_type; /* ARPHRD_* */ | |
407 | int ifi_index; /* Link index */ | |
408 | unsigned ifi_flags; /* IFF_* flags */ | |
409 | unsigned ifi_change; /* IFF_* change mask */ | |
410 | }; | |
411 | ||
412 | /******************************************************************** | |
413 | * prefix information | |
414 | ****/ | |
415 | ||
416 | struct prefixmsg | |
417 | { | |
418 | unsigned char prefix_family; | |
8a47077a PM |
419 | unsigned char prefix_pad1; |
420 | unsigned short prefix_pad2; | |
1da177e4 LT |
421 | int prefix_ifindex; |
422 | unsigned char prefix_type; | |
423 | unsigned char prefix_len; | |
424 | unsigned char prefix_flags; | |
8a47077a | 425 | unsigned char prefix_pad3; |
1da177e4 LT |
426 | }; |
427 | ||
428 | enum | |
429 | { | |
430 | PREFIX_UNSPEC, | |
431 | PREFIX_ADDRESS, | |
432 | PREFIX_CACHEINFO, | |
433 | __PREFIX_MAX | |
434 | }; | |
435 | ||
436 | #define PREFIX_MAX (__PREFIX_MAX - 1) | |
437 | ||
438 | struct prefix_cacheinfo | |
439 | { | |
440 | __u32 preferred_time; | |
441 | __u32 valid_time; | |
442 | }; | |
443 | ||
1da177e4 LT |
444 | |
445 | /***************************************************************** | |
446 | * Traffic control messages. | |
447 | ****/ | |
448 | ||
449 | struct tcmsg | |
450 | { | |
451 | unsigned char tcm_family; | |
452 | unsigned char tcm__pad1; | |
453 | unsigned short tcm__pad2; | |
454 | int tcm_ifindex; | |
455 | __u32 tcm_handle; | |
456 | __u32 tcm_parent; | |
457 | __u32 tcm_info; | |
458 | }; | |
459 | ||
460 | enum | |
461 | { | |
462 | TCA_UNSPEC, | |
463 | TCA_KIND, | |
464 | TCA_OPTIONS, | |
465 | TCA_STATS, | |
466 | TCA_XSTATS, | |
467 | TCA_RATE, | |
468 | TCA_FCNT, | |
469 | TCA_STATS2, | |
470 | __TCA_MAX | |
471 | }; | |
472 | ||
473 | #define TCA_MAX (__TCA_MAX - 1) | |
474 | ||
475 | #define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg)))) | |
476 | #define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg)) | |
477 | ||
ac6d439d PM |
478 | #ifndef __KERNEL__ |
479 | /* RTnetlink multicast groups - backwards compatibility for userspace */ | |
1da177e4 LT |
480 | #define RTMGRP_LINK 1 |
481 | #define RTMGRP_NOTIFY 2 | |
482 | #define RTMGRP_NEIGH 4 | |
483 | #define RTMGRP_TC 8 | |
484 | ||
485 | #define RTMGRP_IPV4_IFADDR 0x10 | |
486 | #define RTMGRP_IPV4_MROUTE 0x20 | |
487 | #define RTMGRP_IPV4_ROUTE 0x40 | |
a5cdc030 | 488 | #define RTMGRP_IPV4_RULE 0x80 |
1da177e4 LT |
489 | |
490 | #define RTMGRP_IPV6_IFADDR 0x100 | |
491 | #define RTMGRP_IPV6_MROUTE 0x200 | |
492 | #define RTMGRP_IPV6_ROUTE 0x400 | |
493 | #define RTMGRP_IPV6_IFINFO 0x800 | |
494 | ||
495 | #define RTMGRP_DECnet_IFADDR 0x1000 | |
496 | #define RTMGRP_DECnet_ROUTE 0x4000 | |
497 | ||
498 | #define RTMGRP_IPV6_PREFIX 0x20000 | |
ac6d439d PM |
499 | #endif |
500 | ||
501 | /* RTnetlink multicast groups */ | |
502 | enum rtnetlink_groups { | |
503 | RTNLGRP_NONE, | |
504 | #define RTNLGRP_NONE RTNLGRP_NONE | |
505 | RTNLGRP_LINK, | |
506 | #define RTNLGRP_LINK RTNLGRP_LINK | |
507 | RTNLGRP_NOTIFY, | |
508 | #define RTNLGRP_NOTIFY RTNLGRP_NOTIFY | |
509 | RTNLGRP_NEIGH, | |
510 | #define RTNLGRP_NEIGH RTNLGRP_NEIGH | |
511 | RTNLGRP_TC, | |
512 | #define RTNLGRP_TC RTNLGRP_TC | |
513 | RTNLGRP_IPV4_IFADDR, | |
514 | #define RTNLGRP_IPV4_IFADDR RTNLGRP_IPV4_IFADDR | |
515 | RTNLGRP_IPV4_MROUTE, | |
516 | #define RTNLGRP_IPV4_MROUTE RTNLGRP_IPV4_MROUTE | |
517 | RTNLGRP_IPV4_ROUTE, | |
518 | #define RTNLGRP_IPV4_ROUTE RTNLGRP_IPV4_ROUTE | |
a5cdc030 PM |
519 | RTNLGRP_IPV4_RULE, |
520 | #define RTNLGRP_IPV4_RULE RTNLGRP_IPV4_RULE | |
ac6d439d PM |
521 | RTNLGRP_IPV6_IFADDR, |
522 | #define RTNLGRP_IPV6_IFADDR RTNLGRP_IPV6_IFADDR | |
523 | RTNLGRP_IPV6_MROUTE, | |
524 | #define RTNLGRP_IPV6_MROUTE RTNLGRP_IPV6_MROUTE | |
525 | RTNLGRP_IPV6_ROUTE, | |
526 | #define RTNLGRP_IPV6_ROUTE RTNLGRP_IPV6_ROUTE | |
527 | RTNLGRP_IPV6_IFINFO, | |
528 | #define RTNLGRP_IPV6_IFINFO RTNLGRP_IPV6_IFINFO | |
529 | RTNLGRP_DECnet_IFADDR, | |
530 | #define RTNLGRP_DECnet_IFADDR RTNLGRP_DECnet_IFADDR | |
6b80ebed | 531 | RTNLGRP_NOP2, |
ac6d439d PM |
532 | RTNLGRP_DECnet_ROUTE, |
533 | #define RTNLGRP_DECnet_ROUTE RTNLGRP_DECnet_ROUTE | |
a8731cbf SW |
534 | RTNLGRP_DECnet_RULE, |
535 | #define RTNLGRP_DECnet_RULE RTNLGRP_DECnet_RULE | |
6b80ebed | 536 | RTNLGRP_NOP4, |
ac6d439d PM |
537 | RTNLGRP_IPV6_PREFIX, |
538 | #define RTNLGRP_IPV6_PREFIX RTNLGRP_IPV6_PREFIX | |
101367c2 TG |
539 | RTNLGRP_IPV6_RULE, |
540 | #define RTNLGRP_IPV6_RULE RTNLGRP_IPV6_RULE | |
ac6d439d PM |
541 | __RTNLGRP_MAX |
542 | }; | |
543 | #define RTNLGRP_MAX (__RTNLGRP_MAX - 1) | |
1da177e4 LT |
544 | |
545 | /* TC action piece */ | |
546 | struct tcamsg | |
547 | { | |
548 | unsigned char tca_family; | |
549 | unsigned char tca__pad1; | |
550 | unsigned short tca__pad2; | |
551 | }; | |
552 | #define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg)))) | |
553 | #define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg)) | |
554 | #define TCA_ACT_TAB 1 /* attr type must be >=1 */ | |
555 | #define TCAA_MAX 1 | |
556 | ||
557 | /* End of information exported to user level */ | |
558 | ||
559 | #ifdef __KERNEL__ | |
560 | ||
6756ae4b | 561 | #include <linux/mutex.h> |
1da177e4 LT |
562 | |
563 | extern size_t rtattr_strlcpy(char *dest, const struct rtattr *rta, size_t size); | |
564 | static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str) | |
565 | { | |
566 | int len = strlen(str) + 1; | |
567 | return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len); | |
568 | } | |
569 | ||
570 | extern int rtattr_parse(struct rtattr *tb[], int maxattr, struct rtattr *rta, int len); | |
571 | ||
572 | #define rtattr_parse_nested(tb, max, rta) \ | |
573 | rtattr_parse((tb), (max), RTA_DATA((rta)), RTA_PAYLOAD((rta))) | |
574 | ||
1da177e4 LT |
575 | struct rtnetlink_link |
576 | { | |
577 | int (*doit)(struct sk_buff *, struct nlmsghdr*, void *attr); | |
578 | int (*dumpit)(struct sk_buff *, struct netlink_callback *cb); | |
579 | }; | |
580 | ||
581 | extern struct rtnetlink_link * rtnetlink_links[NPROTO]; | |
582 | extern int rtnetlink_send(struct sk_buff *skb, u32 pid, u32 group, int echo); | |
2942e900 | 583 | extern int rtnl_unicast(struct sk_buff *skb, u32 pid); |
97676b6b TG |
584 | extern int rtnl_notify(struct sk_buff *skb, u32 pid, u32 group, |
585 | struct nlmsghdr *nlh, gfp_t flags); | |
586 | extern void rtnl_set_sk_err(u32 group, int error); | |
1da177e4 | 587 | extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics); |
e3703b3d TG |
588 | extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, |
589 | u32 id, u32 ts, u32 tsage, long expires, | |
590 | u32 error); | |
1da177e4 LT |
591 | |
592 | extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data); | |
593 | ||
594 | #define RTA_PUT(skb, attrtype, attrlen, data) \ | |
595 | ({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \ | |
596 | goto rtattr_failure; \ | |
597 | __rta_fill(skb, attrtype, attrlen, data); }) | |
598 | ||
d675c989 | 599 | #define RTA_APPEND(skb, attrlen, data) \ |
1da177e4 LT |
600 | ({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \ |
601 | goto rtattr_failure; \ | |
d675c989 TG |
602 | memcpy(skb_put(skb, attrlen), data, attrlen); }) |
603 | ||
604 | #define RTA_PUT_NOHDR(skb, attrlen, data) \ | |
b3563c4f PM |
605 | ({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \ |
606 | memset(skb->tail - (RTA_ALIGN(attrlen) - attrlen), 0, \ | |
607 | RTA_ALIGN(attrlen) - attrlen); }) | |
00768244 | 608 | |
8f48bcd4 TG |
609 | #define RTA_PUT_U8(skb, attrtype, value) \ |
610 | ({ u8 _tmp = (value); \ | |
611 | RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); }) | |
612 | ||
613 | #define RTA_PUT_U16(skb, attrtype, value) \ | |
614 | ({ u16 _tmp = (value); \ | |
615 | RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); }) | |
616 | ||
00768244 TG |
617 | #define RTA_PUT_U32(skb, attrtype, value) \ |
618 | ({ u32 _tmp = (value); \ | |
619 | RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); }) | |
620 | ||
621 | #define RTA_PUT_U64(skb, attrtype, value) \ | |
622 | ({ u64 _tmp = (value); \ | |
623 | RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); }) | |
624 | ||
625 | #define RTA_PUT_SECS(skb, attrtype, value) \ | |
626 | RTA_PUT_U64(skb, attrtype, (value) / HZ) | |
627 | ||
628 | #define RTA_PUT_MSECS(skb, attrtype, value) \ | |
629 | RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value)) | |
630 | ||
631 | #define RTA_PUT_STRING(skb, attrtype, value) \ | |
632 | RTA_PUT(skb, attrtype, strlen(value) + 1, value) | |
633 | ||
8f48bcd4 TG |
634 | #define RTA_PUT_FLAG(skb, attrtype) \ |
635 | RTA_PUT(skb, attrtype, 0, NULL); | |
636 | ||
00768244 TG |
637 | #define RTA_NEST(skb, type) \ |
638 | ({ struct rtattr *__start = (struct rtattr *) (skb)->tail; \ | |
639 | RTA_PUT(skb, type, 0, NULL); \ | |
640 | __start; }) | |
641 | ||
642 | #define RTA_NEST_END(skb, start) \ | |
643 | ({ (start)->rta_len = ((skb)->tail - (unsigned char *) (start)); \ | |
644 | (skb)->len; }) | |
645 | ||
646 | #define RTA_NEST_CANCEL(skb, start) \ | |
c52a3f89 TG |
647 | ({ if (start) \ |
648 | skb_trim(skb, (unsigned char *) (start) - (skb)->data); \ | |
00768244 TG |
649 | -1; }) |
650 | ||
8f48bcd4 TG |
651 | #define RTA_GET_U8(rta) \ |
652 | ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \ | |
653 | goto rtattr_failure; \ | |
654 | *(u8 *) RTA_DATA(rta); }) | |
655 | ||
656 | #define RTA_GET_U16(rta) \ | |
657 | ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \ | |
658 | goto rtattr_failure; \ | |
659 | *(u16 *) RTA_DATA(rta); }) | |
660 | ||
00768244 TG |
661 | #define RTA_GET_U32(rta) \ |
662 | ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \ | |
663 | goto rtattr_failure; \ | |
664 | *(u32 *) RTA_DATA(rta); }) | |
665 | ||
666 | #define RTA_GET_U64(rta) \ | |
667 | ({ u64 _tmp; \ | |
668 | if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \ | |
669 | goto rtattr_failure; \ | |
670 | memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \ | |
671 | _tmp; }) | |
672 | ||
8f48bcd4 TG |
673 | #define RTA_GET_FLAG(rta) (!!(rta)) |
674 | ||
00768244 TG |
675 | #define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ) |
676 | #define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta))) | |
1da177e4 LT |
677 | |
678 | static inline struct rtattr * | |
679 | __rta_reserve(struct sk_buff *skb, int attrtype, int attrlen) | |
680 | { | |
681 | struct rtattr *rta; | |
682 | int size = RTA_LENGTH(attrlen); | |
683 | ||
684 | rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size)); | |
685 | rta->rta_type = attrtype; | |
686 | rta->rta_len = size; | |
b3563c4f | 687 | memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size); |
1da177e4 LT |
688 | return rta; |
689 | } | |
690 | ||
691 | #define __RTA_PUT(skb, attrtype, attrlen) \ | |
692 | ({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \ | |
693 | goto rtattr_failure; \ | |
694 | __rta_reserve(skb, attrtype, attrlen); }) | |
695 | ||
696 | extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change); | |
697 | ||
6756ae4b | 698 | /* RTNL is used as a global lock for all changes to network configuration */ |
1da177e4 | 699 | extern void rtnl_lock(void); |
1da177e4 | 700 | extern void rtnl_unlock(void); |
6756ae4b SH |
701 | extern int rtnl_trylock(void); |
702 | ||
1da177e4 | 703 | extern void rtnetlink_init(void); |
6756ae4b | 704 | extern void __rtnl_unlock(void); |
1da177e4 LT |
705 | |
706 | #define ASSERT_RTNL() do { \ | |
6756ae4b SH |
707 | if (unlikely(rtnl_trylock())) { \ |
708 | rtnl_unlock(); \ | |
1da177e4 LT |
709 | printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \ |
710 | __FILE__, __LINE__); \ | |
711 | dump_stack(); \ | |
712 | } \ | |
713 | } while(0) | |
714 | ||
715 | #define BUG_TRAP(x) do { \ | |
716 | if (unlikely(!(x))) { \ | |
717 | printk(KERN_ERR "KERNEL: assertion (%s) failed at %s (%d)\n", \ | |
718 | #x, __FILE__ , __LINE__); \ | |
719 | } \ | |
720 | } while(0) | |
721 | ||
9e762a4a PM |
722 | static inline u32 rtm_get_table(struct rtattr **rta, u8 table) |
723 | { | |
724 | return RTA_GET_U32(rta[RTA_TABLE-1]); | |
725 | rtattr_failure: | |
726 | return table; | |
727 | } | |
728 | ||
1da177e4 LT |
729 | #endif /* __KERNEL__ */ |
730 | ||
731 | ||
732 | #endif /* __LINUX_RTNETLINK_H */ |