Commit | Line | Data |
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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 | ||
16 | enum { | |
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, | |
107 | #define RTM_NEWADDRLABEL RTM_NEWADDRLABEL | |
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 | ||
130 | struct rtattr | |
131 | { | |
132 | unsigned short rta_len; | |
133 | unsigned short rta_type; | |
134 | }; | |
135 | ||
136 | /* Macros to handle rtattributes */ | |
137 | ||
138 | #define RTA_ALIGNTO 4 | |
139 | #define RTA_ALIGN(len) ( ((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1) ) | |
140 | #define RTA_OK(rta,len) ((len) >= (int)sizeof(struct rtattr) && \ | |
141 | (rta)->rta_len >= sizeof(struct rtattr) && \ | |
142 | (rta)->rta_len <= (len)) | |
143 | #define RTA_NEXT(rta,attrlen) ((attrlen) -= RTA_ALIGN((rta)->rta_len), \ | |
144 | (struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len))) | |
145 | #define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len)) | |
146 | #define RTA_SPACE(len) RTA_ALIGN(RTA_LENGTH(len)) | |
147 | #define RTA_DATA(rta) ((void*)(((char*)(rta)) + RTA_LENGTH(0))) | |
148 | #define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0)) | |
149 | ||
150 | ||
151 | ||
152 | ||
153 | /****************************************************************************** | |
154 | * Definitions used in routing table administration. | |
155 | ****/ | |
156 | ||
157 | struct rtmsg | |
158 | { | |
159 | unsigned char rtm_family; | |
160 | unsigned char rtm_dst_len; | |
161 | unsigned char rtm_src_len; | |
162 | unsigned char rtm_tos; | |
163 | ||
164 | unsigned char rtm_table; /* Routing table id */ | |
165 | unsigned char rtm_protocol; /* Routing protocol; see below */ | |
166 | unsigned char rtm_scope; /* See below */ | |
167 | unsigned char rtm_type; /* See below */ | |
168 | ||
169 | unsigned rtm_flags; | |
170 | }; | |
171 | ||
172 | /* rtm_type */ | |
173 | ||
174 | enum | |
175 | { | |
176 | RTN_UNSPEC, | |
177 | RTN_UNICAST, /* Gateway or direct route */ | |
178 | RTN_LOCAL, /* Accept locally */ | |
179 | RTN_BROADCAST, /* Accept locally as broadcast, | |
180 | send as broadcast */ | |
181 | RTN_ANYCAST, /* Accept locally as broadcast, | |
182 | but send as unicast */ | |
183 | RTN_MULTICAST, /* Multicast route */ | |
184 | RTN_BLACKHOLE, /* Drop */ | |
185 | RTN_UNREACHABLE, /* Destination is unreachable */ | |
186 | RTN_PROHIBIT, /* Administratively prohibited */ | |
187 | RTN_THROW, /* Not in this table */ | |
188 | RTN_NAT, /* Translate this address */ | |
189 | RTN_XRESOLVE, /* Use external resolver */ | |
190 | __RTN_MAX | |
191 | }; | |
192 | ||
193 | #define RTN_MAX (__RTN_MAX - 1) | |
194 | ||
195 | ||
196 | /* rtm_protocol */ | |
197 | ||
198 | #define RTPROT_UNSPEC 0 | |
199 | #define RTPROT_REDIRECT 1 /* Route installed by ICMP redirects; | |
200 | not used by current IPv4 */ | |
201 | #define RTPROT_KERNEL 2 /* Route installed by kernel */ | |
202 | #define RTPROT_BOOT 3 /* Route installed during boot */ | |
203 | #define RTPROT_STATIC 4 /* Route installed by administrator */ | |
204 | ||
205 | /* Values of protocol >= RTPROT_STATIC are not interpreted by kernel; | |
206 | they are just passed from user and back as is. | |
207 | It will be used by hypothetical multiple routing daemons. | |
208 | Note that protocol values should be standardized in order to | |
209 | avoid conflicts. | |
210 | */ | |
211 | ||
212 | #define RTPROT_GATED 8 /* Apparently, GateD */ | |
213 | #define RTPROT_RA 9 /* RDISC/ND router advertisements */ | |
214 | #define RTPROT_MRT 10 /* Merit MRT */ | |
215 | #define RTPROT_ZEBRA 11 /* Zebra */ | |
216 | #define RTPROT_BIRD 12 /* BIRD */ | |
217 | #define RTPROT_DNROUTED 13 /* DECnet routing daemon */ | |
218 | #define RTPROT_XORP 14 /* XORP */ | |
99cae7fc | 219 | #define RTPROT_NTK 15 /* Netsukuku */ |
2e1ab634 | 220 | #define RTPROT_DHCP 16 /* DHCP client */ |
1da177e4 LT |
221 | |
222 | /* rtm_scope | |
223 | ||
224 | Really it is not scope, but sort of distance to the destination. | |
225 | NOWHERE are reserved for not existing destinations, HOST is our | |
226 | local addresses, LINK are destinations, located on directly attached | |
227 | link and UNIVERSE is everywhere in the Universe. | |
228 | ||
229 | Intermediate values are also possible f.e. interior routes | |
230 | could be assigned a value between UNIVERSE and LINK. | |
231 | */ | |
232 | ||
233 | enum rt_scope_t | |
234 | { | |
235 | RT_SCOPE_UNIVERSE=0, | |
236 | /* User defined values */ | |
237 | RT_SCOPE_SITE=200, | |
238 | RT_SCOPE_LINK=253, | |
239 | RT_SCOPE_HOST=254, | |
240 | RT_SCOPE_NOWHERE=255 | |
241 | }; | |
242 | ||
243 | /* rtm_flags */ | |
244 | ||
245 | #define RTM_F_NOTIFY 0x100 /* Notify user of route change */ | |
246 | #define RTM_F_CLONED 0x200 /* This route is cloned */ | |
247 | #define RTM_F_EQUALIZE 0x400 /* Multipath equalizer: NI */ | |
248 | #define RTM_F_PREFIX 0x800 /* Prefix addresses */ | |
249 | ||
250 | /* Reserved table identifiers */ | |
251 | ||
252 | enum rt_class_t | |
253 | { | |
254 | RT_TABLE_UNSPEC=0, | |
255 | /* User defined values */ | |
709772e6 | 256 | RT_TABLE_COMPAT=252, |
1da177e4 LT |
257 | RT_TABLE_DEFAULT=253, |
258 | RT_TABLE_MAIN=254, | |
259 | RT_TABLE_LOCAL=255, | |
b801f549 | 260 | RT_TABLE_MAX=0xFFFFFFFF |
1da177e4 | 261 | }; |
1da177e4 LT |
262 | |
263 | ||
264 | /* Routing message attributes */ | |
265 | ||
266 | enum rtattr_type_t | |
267 | { | |
268 | RTA_UNSPEC, | |
269 | RTA_DST, | |
270 | RTA_SRC, | |
271 | RTA_IIF, | |
272 | RTA_OIF, | |
273 | RTA_GATEWAY, | |
274 | RTA_PRIORITY, | |
275 | RTA_PREFSRC, | |
276 | RTA_METRICS, | |
277 | RTA_MULTIPATH, | |
1f9d11c7 | 278 | RTA_PROTOINFO, /* no longer used */ |
1da177e4 LT |
279 | RTA_FLOW, |
280 | RTA_CACHEINFO, | |
1f9d11c7 | 281 | RTA_SESSION, /* no longer used */ |
e06e7c61 | 282 | RTA_MP_ALGO, /* no longer used */ |
9e762a4a | 283 | RTA_TABLE, |
1da177e4 LT |
284 | __RTA_MAX |
285 | }; | |
286 | ||
287 | #define RTA_MAX (__RTA_MAX - 1) | |
288 | ||
289 | #define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg)))) | |
290 | #define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg)) | |
291 | ||
292 | /* RTM_MULTIPATH --- array of struct rtnexthop. | |
293 | * | |
294 | * "struct rtnexthop" describes all necessary nexthop information, | |
295 | * i.e. parameters of path to a destination via this nexthop. | |
296 | * | |
297 | * At the moment it is impossible to set different prefsrc, mtu, window | |
298 | * and rtt for different paths from multipath. | |
299 | */ | |
300 | ||
301 | struct rtnexthop | |
302 | { | |
303 | unsigned short rtnh_len; | |
304 | unsigned char rtnh_flags; | |
305 | unsigned char rtnh_hops; | |
306 | int rtnh_ifindex; | |
307 | }; | |
308 | ||
309 | /* rtnh_flags */ | |
310 | ||
311 | #define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */ | |
312 | #define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */ | |
313 | #define RTNH_F_ONLINK 4 /* Gateway is forced on link */ | |
314 | ||
315 | /* Macros to handle hexthops */ | |
316 | ||
317 | #define RTNH_ALIGNTO 4 | |
318 | #define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) ) | |
319 | #define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \ | |
320 | ((int)(rtnh)->rtnh_len) <= (len)) | |
321 | #define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len))) | |
322 | #define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len)) | |
323 | #define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len)) | |
324 | #define RTNH_DATA(rtnh) ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0))) | |
325 | ||
326 | /* RTM_CACHEINFO */ | |
327 | ||
328 | struct rta_cacheinfo | |
329 | { | |
330 | __u32 rta_clntref; | |
331 | __u32 rta_lastuse; | |
332 | __s32 rta_expires; | |
333 | __u32 rta_error; | |
334 | __u32 rta_used; | |
335 | ||
336 | #define RTNETLINK_HAVE_PEERINFO 1 | |
337 | __u32 rta_id; | |
338 | __u32 rta_ts; | |
339 | __u32 rta_tsage; | |
340 | }; | |
341 | ||
342 | /* RTM_METRICS --- array of struct rtattr with types of RTAX_* */ | |
343 | ||
344 | enum | |
345 | { | |
346 | RTAX_UNSPEC, | |
347 | #define RTAX_UNSPEC RTAX_UNSPEC | |
348 | RTAX_LOCK, | |
349 | #define RTAX_LOCK RTAX_LOCK | |
350 | RTAX_MTU, | |
351 | #define RTAX_MTU RTAX_MTU | |
352 | RTAX_WINDOW, | |
353 | #define RTAX_WINDOW RTAX_WINDOW | |
354 | RTAX_RTT, | |
355 | #define RTAX_RTT RTAX_RTT | |
356 | RTAX_RTTVAR, | |
357 | #define RTAX_RTTVAR RTAX_RTTVAR | |
358 | RTAX_SSTHRESH, | |
359 | #define RTAX_SSTHRESH RTAX_SSTHRESH | |
360 | RTAX_CWND, | |
361 | #define RTAX_CWND RTAX_CWND | |
362 | RTAX_ADVMSS, | |
363 | #define RTAX_ADVMSS RTAX_ADVMSS | |
364 | RTAX_REORDERING, | |
365 | #define RTAX_REORDERING RTAX_REORDERING | |
366 | RTAX_HOPLIMIT, | |
367 | #define RTAX_HOPLIMIT RTAX_HOPLIMIT | |
368 | RTAX_INITCWND, | |
369 | #define RTAX_INITCWND RTAX_INITCWND | |
370 | RTAX_FEATURES, | |
371 | #define RTAX_FEATURES RTAX_FEATURES | |
05bb1fad DM |
372 | RTAX_RTO_MIN, |
373 | #define RTAX_RTO_MIN RTAX_RTO_MIN | |
1da177e4 LT |
374 | __RTAX_MAX |
375 | }; | |
376 | ||
377 | #define RTAX_MAX (__RTAX_MAX - 1) | |
378 | ||
379 | #define RTAX_FEATURE_ECN 0x00000001 | |
380 | #define RTAX_FEATURE_SACK 0x00000002 | |
381 | #define RTAX_FEATURE_TIMESTAMP 0x00000004 | |
382 | #define RTAX_FEATURE_ALLFRAG 0x00000008 | |
383 | ||
384 | struct rta_session | |
385 | { | |
386 | __u8 proto; | |
8a47077a PM |
387 | __u8 pad1; |
388 | __u16 pad2; | |
1da177e4 LT |
389 | |
390 | union { | |
391 | struct { | |
392 | __u16 sport; | |
393 | __u16 dport; | |
394 | } ports; | |
395 | ||
396 | struct { | |
397 | __u8 type; | |
398 | __u8 code; | |
399 | __u16 ident; | |
400 | } icmpt; | |
401 | ||
402 | __u32 spi; | |
403 | } u; | |
404 | }; | |
405 | ||
1da177e4 LT |
406 | /**** |
407 | * General form of address family dependent message. | |
408 | ****/ | |
409 | ||
410 | struct rtgenmsg | |
411 | { | |
412 | unsigned char rtgen_family; | |
413 | }; | |
414 | ||
415 | /***************************************************************** | |
416 | * Link layer specific messages. | |
417 | ****/ | |
418 | ||
419 | /* struct ifinfomsg | |
420 | * passes link level specific information, not dependent | |
421 | * on network protocol. | |
422 | */ | |
423 | ||
424 | struct ifinfomsg | |
425 | { | |
426 | unsigned char ifi_family; | |
427 | unsigned char __ifi_pad; | |
428 | unsigned short ifi_type; /* ARPHRD_* */ | |
429 | int ifi_index; /* Link index */ | |
430 | unsigned ifi_flags; /* IFF_* flags */ | |
431 | unsigned ifi_change; /* IFF_* change mask */ | |
432 | }; | |
433 | ||
434 | /******************************************************************** | |
435 | * prefix information | |
436 | ****/ | |
437 | ||
438 | struct prefixmsg | |
439 | { | |
440 | unsigned char prefix_family; | |
8a47077a PM |
441 | unsigned char prefix_pad1; |
442 | unsigned short prefix_pad2; | |
1da177e4 LT |
443 | int prefix_ifindex; |
444 | unsigned char prefix_type; | |
445 | unsigned char prefix_len; | |
446 | unsigned char prefix_flags; | |
8a47077a | 447 | unsigned char prefix_pad3; |
1da177e4 LT |
448 | }; |
449 | ||
450 | enum | |
451 | { | |
452 | PREFIX_UNSPEC, | |
453 | PREFIX_ADDRESS, | |
454 | PREFIX_CACHEINFO, | |
455 | __PREFIX_MAX | |
456 | }; | |
457 | ||
458 | #define PREFIX_MAX (__PREFIX_MAX - 1) | |
459 | ||
460 | struct prefix_cacheinfo | |
461 | { | |
462 | __u32 preferred_time; | |
463 | __u32 valid_time; | |
464 | }; | |
465 | ||
1da177e4 LT |
466 | |
467 | /***************************************************************** | |
468 | * Traffic control messages. | |
469 | ****/ | |
470 | ||
471 | struct tcmsg | |
472 | { | |
473 | unsigned char tcm_family; | |
474 | unsigned char tcm__pad1; | |
475 | unsigned short tcm__pad2; | |
476 | int tcm_ifindex; | |
477 | __u32 tcm_handle; | |
478 | __u32 tcm_parent; | |
479 | __u32 tcm_info; | |
480 | }; | |
481 | ||
482 | enum | |
483 | { | |
484 | TCA_UNSPEC, | |
485 | TCA_KIND, | |
486 | TCA_OPTIONS, | |
487 | TCA_STATS, | |
488 | TCA_XSTATS, | |
489 | TCA_RATE, | |
490 | TCA_FCNT, | |
491 | TCA_STATS2, | |
175f9c1b | 492 | TCA_STAB, |
1da177e4 LT |
493 | __TCA_MAX |
494 | }; | |
495 | ||
496 | #define TCA_MAX (__TCA_MAX - 1) | |
497 | ||
498 | #define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg)))) | |
499 | #define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg)) | |
500 | ||
31910575 PY |
501 | /******************************************************************** |
502 | * Neighbor Discovery userland options | |
503 | ****/ | |
504 | ||
505 | struct nduseroptmsg | |
506 | { | |
507 | unsigned char nduseropt_family; | |
508 | unsigned char nduseropt_pad1; | |
509 | unsigned short nduseropt_opts_len; /* Total length of options */ | |
dbb2ed24 | 510 | int nduseropt_ifindex; |
31910575 PY |
511 | __u8 nduseropt_icmp_type; |
512 | __u8 nduseropt_icmp_code; | |
513 | unsigned short nduseropt_pad2; | |
dbb2ed24 | 514 | unsigned int nduseropt_pad3; |
31910575 PY |
515 | /* Followed by one or more ND options */ |
516 | }; | |
517 | ||
518 | enum | |
519 | { | |
520 | NDUSEROPT_UNSPEC, | |
521 | NDUSEROPT_SRCADDR, | |
522 | __NDUSEROPT_MAX | |
523 | }; | |
524 | ||
525 | #define NDUSEROPT_MAX (__NDUSEROPT_MAX - 1) | |
526 | ||
ac6d439d PM |
527 | #ifndef __KERNEL__ |
528 | /* RTnetlink multicast groups - backwards compatibility for userspace */ | |
1da177e4 LT |
529 | #define RTMGRP_LINK 1 |
530 | #define RTMGRP_NOTIFY 2 | |
531 | #define RTMGRP_NEIGH 4 | |
532 | #define RTMGRP_TC 8 | |
533 | ||
534 | #define RTMGRP_IPV4_IFADDR 0x10 | |
535 | #define RTMGRP_IPV4_MROUTE 0x20 | |
536 | #define RTMGRP_IPV4_ROUTE 0x40 | |
a5cdc030 | 537 | #define RTMGRP_IPV4_RULE 0x80 |
1da177e4 LT |
538 | |
539 | #define RTMGRP_IPV6_IFADDR 0x100 | |
540 | #define RTMGRP_IPV6_MROUTE 0x200 | |
541 | #define RTMGRP_IPV6_ROUTE 0x400 | |
542 | #define RTMGRP_IPV6_IFINFO 0x800 | |
543 | ||
544 | #define RTMGRP_DECnet_IFADDR 0x1000 | |
545 | #define RTMGRP_DECnet_ROUTE 0x4000 | |
546 | ||
547 | #define RTMGRP_IPV6_PREFIX 0x20000 | |
ac6d439d PM |
548 | #endif |
549 | ||
550 | /* RTnetlink multicast groups */ | |
551 | enum rtnetlink_groups { | |
552 | RTNLGRP_NONE, | |
553 | #define RTNLGRP_NONE RTNLGRP_NONE | |
554 | RTNLGRP_LINK, | |
555 | #define RTNLGRP_LINK RTNLGRP_LINK | |
556 | RTNLGRP_NOTIFY, | |
557 | #define RTNLGRP_NOTIFY RTNLGRP_NOTIFY | |
558 | RTNLGRP_NEIGH, | |
559 | #define RTNLGRP_NEIGH RTNLGRP_NEIGH | |
560 | RTNLGRP_TC, | |
561 | #define RTNLGRP_TC RTNLGRP_TC | |
562 | RTNLGRP_IPV4_IFADDR, | |
563 | #define RTNLGRP_IPV4_IFADDR RTNLGRP_IPV4_IFADDR | |
564 | RTNLGRP_IPV4_MROUTE, | |
565 | #define RTNLGRP_IPV4_MROUTE RTNLGRP_IPV4_MROUTE | |
566 | RTNLGRP_IPV4_ROUTE, | |
567 | #define RTNLGRP_IPV4_ROUTE RTNLGRP_IPV4_ROUTE | |
a5cdc030 PM |
568 | RTNLGRP_IPV4_RULE, |
569 | #define RTNLGRP_IPV4_RULE RTNLGRP_IPV4_RULE | |
ac6d439d PM |
570 | RTNLGRP_IPV6_IFADDR, |
571 | #define RTNLGRP_IPV6_IFADDR RTNLGRP_IPV6_IFADDR | |
572 | RTNLGRP_IPV6_MROUTE, | |
573 | #define RTNLGRP_IPV6_MROUTE RTNLGRP_IPV6_MROUTE | |
574 | RTNLGRP_IPV6_ROUTE, | |
575 | #define RTNLGRP_IPV6_ROUTE RTNLGRP_IPV6_ROUTE | |
576 | RTNLGRP_IPV6_IFINFO, | |
577 | #define RTNLGRP_IPV6_IFINFO RTNLGRP_IPV6_IFINFO | |
578 | RTNLGRP_DECnet_IFADDR, | |
579 | #define RTNLGRP_DECnet_IFADDR RTNLGRP_DECnet_IFADDR | |
6b80ebed | 580 | RTNLGRP_NOP2, |
ac6d439d PM |
581 | RTNLGRP_DECnet_ROUTE, |
582 | #define RTNLGRP_DECnet_ROUTE RTNLGRP_DECnet_ROUTE | |
a8731cbf SW |
583 | RTNLGRP_DECnet_RULE, |
584 | #define RTNLGRP_DECnet_RULE RTNLGRP_DECnet_RULE | |
6b80ebed | 585 | RTNLGRP_NOP4, |
ac6d439d PM |
586 | RTNLGRP_IPV6_PREFIX, |
587 | #define RTNLGRP_IPV6_PREFIX RTNLGRP_IPV6_PREFIX | |
101367c2 TG |
588 | RTNLGRP_IPV6_RULE, |
589 | #define RTNLGRP_IPV6_RULE RTNLGRP_IPV6_RULE | |
31910575 PY |
590 | RTNLGRP_ND_USEROPT, |
591 | #define RTNLGRP_ND_USEROPT RTNLGRP_ND_USEROPT | |
bce7b154 RDC |
592 | RTNLGRP_PHONET_IFADDR, |
593 | #define RTNLGRP_PHONET_IFADDR RTNLGRP_PHONET_IFADDR | |
594 | RTNLGRP_PHONET_ROUTE, | |
595 | #define RTNLGRP_PHONET_ROUTE RTNLGRP_PHONET_ROUTE | |
ac6d439d PM |
596 | __RTNLGRP_MAX |
597 | }; | |
598 | #define RTNLGRP_MAX (__RTNLGRP_MAX - 1) | |
1da177e4 LT |
599 | |
600 | /* TC action piece */ | |
601 | struct tcamsg | |
602 | { | |
603 | unsigned char tca_family; | |
604 | unsigned char tca__pad1; | |
605 | unsigned short tca__pad2; | |
606 | }; | |
607 | #define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg)))) | |
608 | #define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg)) | |
609 | #define TCA_ACT_TAB 1 /* attr type must be >=1 */ | |
610 | #define TCAA_MAX 1 | |
611 | ||
612 | /* End of information exported to user level */ | |
613 | ||
614 | #ifdef __KERNEL__ | |
615 | ||
6756ae4b | 616 | #include <linux/mutex.h> |
1da177e4 | 617 | |
1da177e4 LT |
618 | static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str) |
619 | { | |
620 | int len = strlen(str) + 1; | |
621 | return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len); | |
622 | } | |
623 | ||
97c53cac DL |
624 | extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo); |
625 | extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid); | |
1ce85fe4 PNA |
626 | extern void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, |
627 | u32 group, struct nlmsghdr *nlh, gfp_t flags); | |
97c53cac | 628 | extern void rtnl_set_sk_err(struct net *net, u32 group, int error); |
1da177e4 | 629 | extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics); |
e3703b3d TG |
630 | extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, |
631 | u32 id, u32 ts, u32 tsage, long expires, | |
632 | u32 error); | |
1da177e4 LT |
633 | |
634 | extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data); | |
635 | ||
636 | #define RTA_PUT(skb, attrtype, attrlen, data) \ | |
637 | ({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \ | |
638 | goto rtattr_failure; \ | |
639 | __rta_fill(skb, attrtype, attrlen, data); }) | |
640 | ||
d675c989 | 641 | #define RTA_APPEND(skb, attrlen, data) \ |
1da177e4 LT |
642 | ({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \ |
643 | goto rtattr_failure; \ | |
d675c989 TG |
644 | memcpy(skb_put(skb, attrlen), data, attrlen); }) |
645 | ||
646 | #define RTA_PUT_NOHDR(skb, attrlen, data) \ | |
b3563c4f | 647 | ({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \ |
27a884dc | 648 | memset(skb_tail_pointer(skb) - (RTA_ALIGN(attrlen) - attrlen), 0, \ |
b3563c4f | 649 | RTA_ALIGN(attrlen) - attrlen); }) |
00768244 | 650 | |
8f48bcd4 TG |
651 | #define RTA_PUT_U8(skb, attrtype, value) \ |
652 | ({ u8 _tmp = (value); \ | |
653 | RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); }) | |
654 | ||
655 | #define RTA_PUT_U16(skb, attrtype, value) \ | |
656 | ({ u16 _tmp = (value); \ | |
657 | RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); }) | |
658 | ||
00768244 TG |
659 | #define RTA_PUT_U32(skb, attrtype, value) \ |
660 | ({ u32 _tmp = (value); \ | |
661 | RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); }) | |
662 | ||
663 | #define RTA_PUT_U64(skb, attrtype, value) \ | |
664 | ({ u64 _tmp = (value); \ | |
665 | RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); }) | |
666 | ||
667 | #define RTA_PUT_SECS(skb, attrtype, value) \ | |
668 | RTA_PUT_U64(skb, attrtype, (value) / HZ) | |
669 | ||
670 | #define RTA_PUT_MSECS(skb, attrtype, value) \ | |
671 | RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value)) | |
672 | ||
673 | #define RTA_PUT_STRING(skb, attrtype, value) \ | |
674 | RTA_PUT(skb, attrtype, strlen(value) + 1, value) | |
675 | ||
8f48bcd4 TG |
676 | #define RTA_PUT_FLAG(skb, attrtype) \ |
677 | RTA_PUT(skb, attrtype, 0, NULL); | |
678 | ||
00768244 | 679 | #define RTA_NEST(skb, type) \ |
27a884dc | 680 | ({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \ |
00768244 TG |
681 | RTA_PUT(skb, type, 0, NULL); \ |
682 | __start; }) | |
683 | ||
684 | #define RTA_NEST_END(skb, start) \ | |
27a884dc | 685 | ({ (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \ |
00768244 TG |
686 | (skb)->len; }) |
687 | ||
afdc3238 PM |
688 | #define RTA_NEST_COMPAT(skb, type, attrlen, data) \ |
689 | ({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \ | |
690 | RTA_PUT(skb, type, attrlen, data); \ | |
691 | RTA_NEST(skb, type); \ | |
692 | __start; }) | |
693 | ||
694 | #define RTA_NEST_COMPAT_END(skb, start) \ | |
695 | ({ struct rtattr *__nest = (void *)(start) + NLMSG_ALIGN((start)->rta_len); \ | |
696 | (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \ | |
697 | RTA_NEST_END(skb, __nest); \ | |
698 | (skb)->len; }) | |
699 | ||
00768244 | 700 | #define RTA_NEST_CANCEL(skb, start) \ |
c52a3f89 TG |
701 | ({ if (start) \ |
702 | skb_trim(skb, (unsigned char *) (start) - (skb)->data); \ | |
00768244 TG |
703 | -1; }) |
704 | ||
8f48bcd4 TG |
705 | #define RTA_GET_U8(rta) \ |
706 | ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \ | |
707 | goto rtattr_failure; \ | |
708 | *(u8 *) RTA_DATA(rta); }) | |
709 | ||
710 | #define RTA_GET_U16(rta) \ | |
711 | ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \ | |
712 | goto rtattr_failure; \ | |
713 | *(u16 *) RTA_DATA(rta); }) | |
714 | ||
00768244 TG |
715 | #define RTA_GET_U32(rta) \ |
716 | ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \ | |
717 | goto rtattr_failure; \ | |
718 | *(u32 *) RTA_DATA(rta); }) | |
719 | ||
720 | #define RTA_GET_U64(rta) \ | |
721 | ({ u64 _tmp; \ | |
722 | if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \ | |
723 | goto rtattr_failure; \ | |
724 | memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \ | |
725 | _tmp; }) | |
726 | ||
8f48bcd4 TG |
727 | #define RTA_GET_FLAG(rta) (!!(rta)) |
728 | ||
00768244 TG |
729 | #define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ) |
730 | #define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta))) | |
1da177e4 LT |
731 | |
732 | static inline struct rtattr * | |
733 | __rta_reserve(struct sk_buff *skb, int attrtype, int attrlen) | |
734 | { | |
735 | struct rtattr *rta; | |
736 | int size = RTA_LENGTH(attrlen); | |
737 | ||
738 | rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size)); | |
739 | rta->rta_type = attrtype; | |
740 | rta->rta_len = size; | |
b3563c4f | 741 | memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size); |
1da177e4 LT |
742 | return rta; |
743 | } | |
744 | ||
745 | #define __RTA_PUT(skb, attrtype, attrlen) \ | |
746 | ({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \ | |
747 | goto rtattr_failure; \ | |
748 | __rta_reserve(skb, attrtype, attrlen); }) | |
749 | ||
750 | extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change); | |
751 | ||
6756ae4b | 752 | /* RTNL is used as a global lock for all changes to network configuration */ |
1da177e4 | 753 | extern void rtnl_lock(void); |
1da177e4 | 754 | extern void rtnl_unlock(void); |
6756ae4b | 755 | extern int rtnl_trylock(void); |
c9c1014b | 756 | extern int rtnl_is_locked(void); |
6756ae4b | 757 | |
1da177e4 | 758 | extern void rtnetlink_init(void); |
6756ae4b | 759 | extern void __rtnl_unlock(void); |
1da177e4 LT |
760 | |
761 | #define ASSERT_RTNL() do { \ | |
c9c1014b | 762 | if (unlikely(!rtnl_is_locked())) { \ |
1da177e4 LT |
763 | printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \ |
764 | __FILE__, __LINE__); \ | |
765 | dump_stack(); \ | |
766 | } \ | |
767 | } while(0) | |
768 | ||
9e762a4a PM |
769 | static inline u32 rtm_get_table(struct rtattr **rta, u8 table) |
770 | { | |
771 | return RTA_GET_U32(rta[RTA_TABLE-1]); | |
772 | rtattr_failure: | |
773 | return table; | |
774 | } | |
775 | ||
1da177e4 LT |
776 | #endif /* __KERNEL__ */ |
777 | ||
778 | ||
779 | #endif /* __LINUX_RTNETLINK_H */ |