projects/linux·blob v2.6.13 · refs

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1#ifndef __LINUX_RTNETLINK_H
2#define __LINUX_RTNETLINK_H
3
4#include <linux/netlink.h>
5
6/****
7 * Routing/neighbour discovery messages.
8 ****/
9
10/* Types of messages */
11
12enum {
13 RTM_BASE = 16,
14#define RTM_BASE RTM_BASE
15
16 RTM_NEWLINK = 16,
17#define RTM_NEWLINK RTM_NEWLINK
18 RTM_DELLINK,
19#define RTM_DELLINK RTM_DELLINK
20 RTM_GETLINK,
21#define RTM_GETLINK RTM_GETLINK
22 RTM_SETLINK,
23#define RTM_SETLINK RTM_SETLINK
24
25 RTM_NEWADDR = 20,
26#define RTM_NEWADDR RTM_NEWADDR
27 RTM_DELADDR,
28#define RTM_DELADDR RTM_DELADDR
29 RTM_GETADDR,
30#define RTM_GETADDR RTM_GETADDR
31
32 RTM_NEWROUTE = 24,
33#define RTM_NEWROUTE RTM_NEWROUTE
34 RTM_DELROUTE,
35#define RTM_DELROUTE RTM_DELROUTE
36 RTM_GETROUTE,
37#define RTM_GETROUTE RTM_GETROUTE
38
39 RTM_NEWNEIGH = 28,
40#define RTM_NEWNEIGH RTM_NEWNEIGH
41 RTM_DELNEIGH,
42#define RTM_DELNEIGH RTM_DELNEIGH
43 RTM_GETNEIGH,
44#define RTM_GETNEIGH RTM_GETNEIGH
45
46 RTM_NEWRULE = 32,
47#define RTM_NEWRULE RTM_NEWRULE
48 RTM_DELRULE,
49#define RTM_DELRULE RTM_DELRULE
50 RTM_GETRULE,
51#define RTM_GETRULE RTM_GETRULE
52
53 RTM_NEWQDISC = 36,
54#define RTM_NEWQDISC RTM_NEWQDISC
55 RTM_DELQDISC,
56#define RTM_DELQDISC RTM_DELQDISC
57 RTM_GETQDISC,
58#define RTM_GETQDISC RTM_GETQDISC
59
60 RTM_NEWTCLASS = 40,
61#define RTM_NEWTCLASS RTM_NEWTCLASS
62 RTM_DELTCLASS,
63#define RTM_DELTCLASS RTM_DELTCLASS
64 RTM_GETTCLASS,
65#define RTM_GETTCLASS RTM_GETTCLASS
66
67 RTM_NEWTFILTER = 44,
68#define RTM_NEWTFILTER RTM_NEWTFILTER
69 RTM_DELTFILTER,
70#define RTM_DELTFILTER RTM_DELTFILTER
71 RTM_GETTFILTER,
72#define RTM_GETTFILTER RTM_GETTFILTER
73
74 RTM_NEWACTION = 48,
75#define RTM_NEWACTION RTM_NEWACTION
76 RTM_DELACTION,
77#define RTM_DELACTION RTM_DELACTION
78 RTM_GETACTION,
79#define RTM_GETACTION RTM_GETACTION
80
81 RTM_NEWPREFIX = 52,
82#define RTM_NEWPREFIX RTM_NEWPREFIX
83 RTM_GETPREFIX = 54,
84#define RTM_GETPREFIX RTM_GETPREFIX
85
86 RTM_GETMULTICAST = 58,
87#define RTM_GETMULTICAST RTM_GETMULTICAST
88
89 RTM_GETANYCAST = 62,
90#define RTM_GETANYCAST RTM_GETANYCAST
91
92 RTM_NEWNEIGHTBL = 64,
93#define RTM_NEWNEIGHTBL RTM_NEWNEIGHTBL
94 RTM_GETNEIGHTBL = 66,
95#define RTM_GETNEIGHTBL RTM_GETNEIGHTBL
96 RTM_SETNEIGHTBL,
97#define RTM_SETNEIGHTBL RTM_SETNEIGHTBL
98
99 __RTM_MAX,
100#define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1)
101};
102
103#define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE)
104#define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2)
105#define RTM_FAM(cmd) (((cmd) - RTM_BASE) >> 2)
106
107/*
108 Generic structure for encapsulation of optional route information.
109 It is reminiscent of sockaddr, but with sa_family replaced
110 with attribute type.
111 */
112
113struct rtattr
114{
115 unsigned short rta_len;
116 unsigned short rta_type;
117};
118
119/* Macros to handle rtattributes */
120
121#define RTA_ALIGNTO 4
122#define RTA_ALIGN(len) ( ((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1) )
123#define RTA_OK(rta,len) ((len) >= (int)sizeof(struct rtattr) && \
124 (rta)->rta_len >= sizeof(struct rtattr) && \
125 (rta)->rta_len <= (len))
126#define RTA_NEXT(rta,attrlen) ((attrlen) -= RTA_ALIGN((rta)->rta_len), \
127 (struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len)))
128#define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len))
129#define RTA_SPACE(len) RTA_ALIGN(RTA_LENGTH(len))
130#define RTA_DATA(rta) ((void*)(((char*)(rta)) + RTA_LENGTH(0)))
131#define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0))
132
133
134
135
136/******************************************************************************
137 * Definitions used in routing table administration.
138 ****/
139
140struct rtmsg
141{
142 unsigned char rtm_family;
143 unsigned char rtm_dst_len;
144 unsigned char rtm_src_len;
145 unsigned char rtm_tos;
146
147 unsigned char rtm_table; /* Routing table id */
148 unsigned char rtm_protocol; /* Routing protocol; see below */
149 unsigned char rtm_scope; /* See below */
150 unsigned char rtm_type; /* See below */
151
152 unsigned rtm_flags;
153};
154
155/* rtm_type */
156
157enum
158{
159 RTN_UNSPEC,
160 RTN_UNICAST, /* Gateway or direct route */
161 RTN_LOCAL, /* Accept locally */
162 RTN_BROADCAST, /* Accept locally as broadcast,
163 send as broadcast */
164 RTN_ANYCAST, /* Accept locally as broadcast,
165 but send as unicast */
166 RTN_MULTICAST, /* Multicast route */
167 RTN_BLACKHOLE, /* Drop */
168 RTN_UNREACHABLE, /* Destination is unreachable */
169 RTN_PROHIBIT, /* Administratively prohibited */
170 RTN_THROW, /* Not in this table */
171 RTN_NAT, /* Translate this address */
172 RTN_XRESOLVE, /* Use external resolver */
173 __RTN_MAX
174};
175
176#define RTN_MAX (__RTN_MAX - 1)
177
178
179/* rtm_protocol */
180
181#define RTPROT_UNSPEC 0
182#define RTPROT_REDIRECT 1 /* Route installed by ICMP redirects;
183 not used by current IPv4 */
184#define RTPROT_KERNEL 2 /* Route installed by kernel */
185#define RTPROT_BOOT 3 /* Route installed during boot */
186#define RTPROT_STATIC 4 /* Route installed by administrator */
187
188/* Values of protocol >= RTPROT_STATIC are not interpreted by kernel;
189 they are just passed from user and back as is.
190 It will be used by hypothetical multiple routing daemons.
191 Note that protocol values should be standardized in order to
192 avoid conflicts.
193 */
194
195#define RTPROT_GATED 8 /* Apparently, GateD */
196#define RTPROT_RA 9 /* RDISC/ND router advertisements */
197#define RTPROT_MRT 10 /* Merit MRT */
198#define RTPROT_ZEBRA 11 /* Zebra */
199#define RTPROT_BIRD 12 /* BIRD */
200#define RTPROT_DNROUTED 13 /* DECnet routing daemon */
201#define RTPROT_XORP 14 /* XORP */
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
214enum 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
233enum 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,
240 __RT_TABLE_MAX
241};
242#define RT_TABLE_MAX (__RT_TABLE_MAX - 1)
243
244
245
246/* Routing message attributes */
247
248enum 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,
264 RTA_MP_ALGO,
265 __RTA_MAX
266};
267
268#define RTA_MAX (__RTA_MAX - 1)
269
270#define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg))))
271#define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg))
272
273/* RTM_MULTIPATH --- array of struct rtnexthop.
274 *
275 * "struct rtnexthop" describes all necessary nexthop information,
276 * i.e. parameters of path to a destination via this nexthop.
277 *
278 * At the moment it is impossible to set different prefsrc, mtu, window
279 * and rtt for different paths from multipath.
280 */
281
282struct rtnexthop
283{
284 unsigned short rtnh_len;
285 unsigned char rtnh_flags;
286 unsigned char rtnh_hops;
287 int rtnh_ifindex;
288};
289
290/* rtnh_flags */
291
292#define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */
293#define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */
294#define RTNH_F_ONLINK 4 /* Gateway is forced on link */
295
296/* Macros to handle hexthops */
297
298#define RTNH_ALIGNTO 4
299#define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) )
300#define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \
301 ((int)(rtnh)->rtnh_len) <= (len))
302#define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len)))
303#define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len))
304#define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len))
305#define RTNH_DATA(rtnh) ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0)))
306
307/* RTM_CACHEINFO */
308
309struct rta_cacheinfo
310{
311 __u32 rta_clntref;
312 __u32 rta_lastuse;
313 __s32 rta_expires;
314 __u32 rta_error;
315 __u32 rta_used;
316
317#define RTNETLINK_HAVE_PEERINFO 1
318 __u32 rta_id;
319 __u32 rta_ts;
320 __u32 rta_tsage;
321};
322
323/* RTM_METRICS --- array of struct rtattr with types of RTAX_* */
324
325enum
326{
327 RTAX_UNSPEC,
328#define RTAX_UNSPEC RTAX_UNSPEC
329 RTAX_LOCK,
330#define RTAX_LOCK RTAX_LOCK
331 RTAX_MTU,
332#define RTAX_MTU RTAX_MTU
333 RTAX_WINDOW,
334#define RTAX_WINDOW RTAX_WINDOW
335 RTAX_RTT,
336#define RTAX_RTT RTAX_RTT
337 RTAX_RTTVAR,
338#define RTAX_RTTVAR RTAX_RTTVAR
339 RTAX_SSTHRESH,
340#define RTAX_SSTHRESH RTAX_SSTHRESH
341 RTAX_CWND,
342#define RTAX_CWND RTAX_CWND
343 RTAX_ADVMSS,
344#define RTAX_ADVMSS RTAX_ADVMSS
345 RTAX_REORDERING,
346#define RTAX_REORDERING RTAX_REORDERING
347 RTAX_HOPLIMIT,
348#define RTAX_HOPLIMIT RTAX_HOPLIMIT
349 RTAX_INITCWND,
350#define RTAX_INITCWND RTAX_INITCWND
351 RTAX_FEATURES,
352#define RTAX_FEATURES RTAX_FEATURES
353 __RTAX_MAX
354};
355
356#define RTAX_MAX (__RTAX_MAX - 1)
357
358#define RTAX_FEATURE_ECN 0x00000001
359#define RTAX_FEATURE_SACK 0x00000002
360#define RTAX_FEATURE_TIMESTAMP 0x00000004
361#define RTAX_FEATURE_ALLFRAG 0x00000008
362
363struct rta_session
364{
365 __u8 proto;
366 __u8 pad1;
367 __u16 pad2;
368
369 union {
370 struct {
371 __u16 sport;
372 __u16 dport;
373 } ports;
374
375 struct {
376 __u8 type;
377 __u8 code;
378 __u16 ident;
379 } icmpt;
380
381 __u32 spi;
382 } u;
383};
384
385
386/*********************************************************
387 * Interface address.
388 ****/
389
390struct ifaddrmsg
391{
392 unsigned char ifa_family;
393 unsigned char ifa_prefixlen; /* The prefix length */
394 unsigned char ifa_flags; /* Flags */
395 unsigned char ifa_scope; /* See above */
396 int ifa_index; /* Link index */
397};
398
399enum
400{
401 IFA_UNSPEC,
402 IFA_ADDRESS,
403 IFA_LOCAL,
404 IFA_LABEL,
405 IFA_BROADCAST,
406 IFA_ANYCAST,
407 IFA_CACHEINFO,
408 IFA_MULTICAST,
409 __IFA_MAX
410};
411
412#define IFA_MAX (__IFA_MAX - 1)
413
414/* ifa_flags */
415
416#define IFA_F_SECONDARY 0x01
417#define IFA_F_TEMPORARY IFA_F_SECONDARY
418
419#define IFA_F_DEPRECATED 0x20
420#define IFA_F_TENTATIVE 0x40
421#define IFA_F_PERMANENT 0x80
422
423struct ifa_cacheinfo
424{
425 __u32 ifa_prefered;
426 __u32 ifa_valid;
427 __u32 cstamp; /* created timestamp, hundredths of seconds */
428 __u32 tstamp; /* updated timestamp, hundredths of seconds */
429};
430
431
432#define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
433#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg))
434
435/*
436 Important comment:
437 IFA_ADDRESS is prefix address, rather than local interface address.
438 It makes no difference for normally configured broadcast interfaces,
439 but for point-to-point IFA_ADDRESS is DESTINATION address,
440 local address is supplied in IFA_LOCAL attribute.
441 */
442
443/**************************************************************
444 * Neighbour discovery.
445 ****/
446
447struct ndmsg
448{
449 unsigned char ndm_family;
450 unsigned char ndm_pad1;
451 unsigned short ndm_pad2;
452 int ndm_ifindex; /* Link index */
453 __u16 ndm_state;
454 __u8 ndm_flags;
455 __u8 ndm_type;
456};
457
458enum
459{
460 NDA_UNSPEC,
461 NDA_DST,
462 NDA_LLADDR,
463 NDA_CACHEINFO,
464 NDA_PROBES,
465 __NDA_MAX
466};
467
468#define NDA_MAX (__NDA_MAX - 1)
469
470#define NDA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg))))
471#define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg))
472
473/*
474 * Neighbor Cache Entry Flags
475 */
476
477#define NTF_PROXY 0x08 /* == ATF_PUBL */
478#define NTF_ROUTER 0x80
479
480/*
481 * Neighbor Cache Entry States.
482 */
483
484#define NUD_INCOMPLETE 0x01
485#define NUD_REACHABLE 0x02
486#define NUD_STALE 0x04
487#define NUD_DELAY 0x08
488#define NUD_PROBE 0x10
489#define NUD_FAILED 0x20
490
491/* Dummy states */
492#define NUD_NOARP 0x40
493#define NUD_PERMANENT 0x80
494#define NUD_NONE 0x00
495
496
497struct nda_cacheinfo
498{
499 __u32 ndm_confirmed;
500 __u32 ndm_used;
501 __u32 ndm_updated;
502 __u32 ndm_refcnt;
503};
504
505
506/*****************************************************************
507 * Neighbour tables specific messages.
508 *
509 * To retrieve the neighbour tables send RTM_GETNEIGHTBL with the
510 * NLM_F_DUMP flag set. Every neighbour table configuration is
511 * spread over multiple messages to avoid running into message
512 * size limits on systems with many interfaces. The first message
513 * in the sequence transports all not device specific data such as
514 * statistics, configuration, and the default parameter set.
515 * This message is followed by 0..n messages carrying device
516 * specific parameter sets.
517 * Although the ordering should be sufficient, NDTA_NAME can be
518 * used to identify sequences. The initial message can be identified
519 * by checking for NDTA_CONFIG. The device specific messages do
520 * not contain this TLV but have NDTPA_IFINDEX set to the
521 * corresponding interface index.
522 *
523 * To change neighbour table attributes, send RTM_SETNEIGHTBL
524 * with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3],
525 * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked
526 * otherwise. Device specific parameter sets can be changed by
527 * setting NDTPA_IFINDEX to the interface index of the corresponding
528 * device.
529 ****/
530
531struct ndt_stats
532{
533 __u64 ndts_allocs;
534 __u64 ndts_destroys;
535 __u64 ndts_hash_grows;
536 __u64 ndts_res_failed;
537 __u64 ndts_lookups;
538 __u64 ndts_hits;
539 __u64 ndts_rcv_probes_mcast;
540 __u64 ndts_rcv_probes_ucast;
541 __u64 ndts_periodic_gc_runs;
542 __u64 ndts_forced_gc_runs;
543};
544
545enum {
546 NDTPA_UNSPEC,
547 NDTPA_IFINDEX, /* u32, unchangeable */
548 NDTPA_REFCNT, /* u32, read-only */
549 NDTPA_REACHABLE_TIME, /* u64, read-only, msecs */
550 NDTPA_BASE_REACHABLE_TIME, /* u64, msecs */
551 NDTPA_RETRANS_TIME, /* u64, msecs */
552 NDTPA_GC_STALETIME, /* u64, msecs */
553 NDTPA_DELAY_PROBE_TIME, /* u64, msecs */
554 NDTPA_QUEUE_LEN, /* u32 */
555 NDTPA_APP_PROBES, /* u32 */
556 NDTPA_UCAST_PROBES, /* u32 */
557 NDTPA_MCAST_PROBES, /* u32 */
558 NDTPA_ANYCAST_DELAY, /* u64, msecs */
559 NDTPA_PROXY_DELAY, /* u64, msecs */
560 NDTPA_PROXY_QLEN, /* u32 */
561 NDTPA_LOCKTIME, /* u64, msecs */
562 __NDTPA_MAX
563};
564#define NDTPA_MAX (__NDTPA_MAX - 1)
565
566struct ndtmsg
567{
568 __u8 ndtm_family;
569 __u8 ndtm_pad1;
570 __u16 ndtm_pad2;
571};
572
573struct ndt_config
574{
575 __u16 ndtc_key_len;
576 __u16 ndtc_entry_size;
577 __u32 ndtc_entries;
578 __u32 ndtc_last_flush; /* delta to now in msecs */
579 __u32 ndtc_last_rand; /* delta to now in msecs */
580 __u32 ndtc_hash_rnd;
581 __u32 ndtc_hash_mask;
582 __u32 ndtc_hash_chain_gc;
583 __u32 ndtc_proxy_qlen;
584};
585
586enum {
587 NDTA_UNSPEC,
588 NDTA_NAME, /* char *, unchangeable */
589 NDTA_THRESH1, /* u32 */
590 NDTA_THRESH2, /* u32 */
591 NDTA_THRESH3, /* u32 */
592 NDTA_CONFIG, /* struct ndt_config, read-only */
593 NDTA_PARMS, /* nested TLV NDTPA_* */
594 NDTA_STATS, /* struct ndt_stats, read-only */
595 NDTA_GC_INTERVAL, /* u64, msecs */
596 __NDTA_MAX
597};
598#define NDTA_MAX (__NDTA_MAX - 1)
599
600#define NDTA_RTA(r) ((struct rtattr*)(((char*)(r)) + \
601 NLMSG_ALIGN(sizeof(struct ndtmsg))))
602#define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndtmsg))
603
604
605/****
606 * General form of address family dependent message.
607 ****/
608
609struct rtgenmsg
610{
611 unsigned char rtgen_family;
612};
613
614/*****************************************************************
615 * Link layer specific messages.
616 ****/
617
618/* struct ifinfomsg
619 * passes link level specific information, not dependent
620 * on network protocol.
621 */
622
623struct ifinfomsg
624{
625 unsigned char ifi_family;
626 unsigned char __ifi_pad;
627 unsigned short ifi_type; /* ARPHRD_* */
628 int ifi_index; /* Link index */
629 unsigned ifi_flags; /* IFF_* flags */
630 unsigned ifi_change; /* IFF_* change mask */
631};
632
633/********************************************************************
634 * prefix information
635 ****/
636
637struct prefixmsg
638{
639 unsigned char prefix_family;
640 unsigned char prefix_pad1;
641 unsigned short prefix_pad2;
642 int prefix_ifindex;
643 unsigned char prefix_type;
644 unsigned char prefix_len;
645 unsigned char prefix_flags;
646 unsigned char prefix_pad3;
647};
648
649enum
650{
651 PREFIX_UNSPEC,
652 PREFIX_ADDRESS,
653 PREFIX_CACHEINFO,
654 __PREFIX_MAX
655};
656
657#define PREFIX_MAX (__PREFIX_MAX - 1)
658
659struct prefix_cacheinfo
660{
661 __u32 preferred_time;
662 __u32 valid_time;
663};
664
665/* The struct should be in sync with struct net_device_stats */
666struct rtnl_link_stats
667{
668 __u32 rx_packets; /* total packets received */
669 __u32 tx_packets; /* total packets transmitted */
670 __u32 rx_bytes; /* total bytes received */
671 __u32 tx_bytes; /* total bytes transmitted */
672 __u32 rx_errors; /* bad packets received */
673 __u32 tx_errors; /* packet transmit problems */
674 __u32 rx_dropped; /* no space in linux buffers */
675 __u32 tx_dropped; /* no space available in linux */
676 __u32 multicast; /* multicast packets received */
677 __u32 collisions;
678
679 /* detailed rx_errors: */
680 __u32 rx_length_errors;
681 __u32 rx_over_errors; /* receiver ring buff overflow */
682 __u32 rx_crc_errors; /* recved pkt with crc error */
683 __u32 rx_frame_errors; /* recv'd frame alignment error */
684 __u32 rx_fifo_errors; /* recv'r fifo overrun */
685 __u32 rx_missed_errors; /* receiver missed packet */
686
687 /* detailed tx_errors */
688 __u32 tx_aborted_errors;
689 __u32 tx_carrier_errors;
690 __u32 tx_fifo_errors;
691 __u32 tx_heartbeat_errors;
692 __u32 tx_window_errors;
693
694 /* for cslip etc */
695 __u32 rx_compressed;
696 __u32 tx_compressed;
697};
698
699/* The struct should be in sync with struct ifmap */
700struct rtnl_link_ifmap
701{
702 __u64 mem_start;
703 __u64 mem_end;
704 __u64 base_addr;
705 __u16 irq;
706 __u8 dma;
707 __u8 port;
708};
709
710enum
711{
712 IFLA_UNSPEC,
713 IFLA_ADDRESS,
714 IFLA_BROADCAST,
715 IFLA_IFNAME,
716 IFLA_MTU,
717 IFLA_LINK,
718 IFLA_QDISC,
719 IFLA_STATS,
720 IFLA_COST,
721#define IFLA_COST IFLA_COST
722 IFLA_PRIORITY,
723#define IFLA_PRIORITY IFLA_PRIORITY
724 IFLA_MASTER,
725#define IFLA_MASTER IFLA_MASTER
726 IFLA_WIRELESS, /* Wireless Extension event - see wireless.h */
727#define IFLA_WIRELESS IFLA_WIRELESS
728 IFLA_PROTINFO, /* Protocol specific information for a link */
729#define IFLA_PROTINFO IFLA_PROTINFO
730 IFLA_TXQLEN,
731#define IFLA_TXQLEN IFLA_TXQLEN
732 IFLA_MAP,
733#define IFLA_MAP IFLA_MAP
734 IFLA_WEIGHT,
735#define IFLA_WEIGHT IFLA_WEIGHT
736 __IFLA_MAX
737};
738
739
740#define IFLA_MAX (__IFLA_MAX - 1)
741
742#define IFLA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg))))
743#define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg))
744
745/* ifi_flags.
746
747 IFF_* flags.
748
749 The only change is:
750 IFF_LOOPBACK, IFF_BROADCAST and IFF_POINTOPOINT are
751 more not changeable by user. They describe link media
752 characteristics and set by device driver.
753
754 Comments:
755 - Combination IFF_BROADCAST|IFF_POINTOPOINT is invalid
756 - If neither of these three flags are set;
757 the interface is NBMA.
758
759 - IFF_MULTICAST does not mean anything special:
760 multicasts can be used on all not-NBMA links.
761 IFF_MULTICAST means that this media uses special encapsulation
762 for multicast frames. Apparently, all IFF_POINTOPOINT and
763 IFF_BROADCAST devices are able to use multicasts too.
764 */
765
766/* IFLA_LINK.
767 For usual devices it is equal ifi_index.
768 If it is a "virtual interface" (f.e. tunnel), ifi_link
769 can point to real physical interface (f.e. for bandwidth calculations),
770 or maybe 0, what means, that real media is unknown (usual
771 for IPIP tunnels, when route to endpoint is allowed to change)
772 */
773
774/* Subtype attributes for IFLA_PROTINFO */
775enum
776{
777 IFLA_INET6_UNSPEC,
778 IFLA_INET6_FLAGS, /* link flags */
779 IFLA_INET6_CONF, /* sysctl parameters */
780 IFLA_INET6_STATS, /* statistics */
781 IFLA_INET6_MCAST, /* MC things. What of them? */
782 IFLA_INET6_CACHEINFO, /* time values and max reasm size */
783 __IFLA_INET6_MAX
784};
785
786#define IFLA_INET6_MAX (__IFLA_INET6_MAX - 1)
787
788struct ifla_cacheinfo
789{
790 __u32 max_reasm_len;
791 __u32 tstamp; /* ipv6InterfaceTable updated timestamp */
792 __u32 reachable_time;
793 __u32 retrans_time;
794};
795
796/*****************************************************************
797 * Traffic control messages.
798 ****/
799
800struct tcmsg
801{
802 unsigned char tcm_family;
803 unsigned char tcm__pad1;
804 unsigned short tcm__pad2;
805 int tcm_ifindex;
806 __u32 tcm_handle;
807 __u32 tcm_parent;
808 __u32 tcm_info;
809};
810
811enum
812{
813 TCA_UNSPEC,
814 TCA_KIND,
815 TCA_OPTIONS,
816 TCA_STATS,
817 TCA_XSTATS,
818 TCA_RATE,
819 TCA_FCNT,
820 TCA_STATS2,
821 __TCA_MAX
822};
823
824#define TCA_MAX (__TCA_MAX - 1)
825
826#define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg))))
827#define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg))
828
829
830/* RTnetlink multicast groups */
831
832#define RTMGRP_LINK 1
833#define RTMGRP_NOTIFY 2
834#define RTMGRP_NEIGH 4
835#define RTMGRP_TC 8
836
837#define RTMGRP_IPV4_IFADDR 0x10
838#define RTMGRP_IPV4_MROUTE 0x20
839#define RTMGRP_IPV4_ROUTE 0x40
840
841#define RTMGRP_IPV6_IFADDR 0x100
842#define RTMGRP_IPV6_MROUTE 0x200
843#define RTMGRP_IPV6_ROUTE 0x400
844#define RTMGRP_IPV6_IFINFO 0x800
845
846#define RTMGRP_DECnet_IFADDR 0x1000
847#define RTMGRP_DECnet_ROUTE 0x4000
848
849#define RTMGRP_IPV6_PREFIX 0x20000
850
851/* TC action piece */
852struct tcamsg
853{
854 unsigned char tca_family;
855 unsigned char tca__pad1;
856 unsigned short tca__pad2;
857};
858#define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg))))
859#define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg))
860#define TCA_ACT_TAB 1 /* attr type must be >=1 */
861#define TCAA_MAX 1
862
863/* End of information exported to user level */
864
865#ifdef __KERNEL__
866
867#include <linux/config.h>
868
869extern size_t rtattr_strlcpy(char *dest, const struct rtattr *rta, size_t size);
870static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
871{
872 int len = strlen(str) + 1;
873 return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len);
874}
875
876extern int rtattr_parse(struct rtattr *tb[], int maxattr, struct rtattr *rta, int len);
877
878#define rtattr_parse_nested(tb, max, rta) \
879 rtattr_parse((tb), (max), RTA_DATA((rta)), RTA_PAYLOAD((rta)))
880
881extern struct sock *rtnl;
882
883struct rtnetlink_link
884{
885 int (*doit)(struct sk_buff *, struct nlmsghdr*, void *attr);
886 int (*dumpit)(struct sk_buff *, struct netlink_callback *cb);
887};
888
889extern struct rtnetlink_link * rtnetlink_links[NPROTO];
890extern int rtnetlink_send(struct sk_buff *skb, u32 pid, u32 group, int echo);
891extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
892
893extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data);
894
895#define RTA_PUT(skb, attrtype, attrlen, data) \
896({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
897 goto rtattr_failure; \
898 __rta_fill(skb, attrtype, attrlen, data); })
899
900#define RTA_APPEND(skb, attrlen, data) \
901({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \
902 goto rtattr_failure; \
903 memcpy(skb_put(skb, attrlen), data, attrlen); })
904
905#define RTA_PUT_NOHDR(skb, attrlen, data) \
906({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \
907 memset(skb->tail - (RTA_ALIGN(attrlen) - attrlen), 0, \
908 RTA_ALIGN(attrlen) - attrlen); })
909
910#define RTA_PUT_U8(skb, attrtype, value) \
911({ u8 _tmp = (value); \
912 RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); })
913
914#define RTA_PUT_U16(skb, attrtype, value) \
915({ u16 _tmp = (value); \
916 RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); })
917
918#define RTA_PUT_U32(skb, attrtype, value) \
919({ u32 _tmp = (value); \
920 RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); })
921
922#define RTA_PUT_U64(skb, attrtype, value) \
923({ u64 _tmp = (value); \
924 RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); })
925
926#define RTA_PUT_SECS(skb, attrtype, value) \
927 RTA_PUT_U64(skb, attrtype, (value) / HZ)
928
929#define RTA_PUT_MSECS(skb, attrtype, value) \
930 RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value))
931
932#define RTA_PUT_STRING(skb, attrtype, value) \
933 RTA_PUT(skb, attrtype, strlen(value) + 1, value)
934
935#define RTA_PUT_FLAG(skb, attrtype) \
936 RTA_PUT(skb, attrtype, 0, NULL);
937
938#define RTA_NEST(skb, type) \
939({ struct rtattr *__start = (struct rtattr *) (skb)->tail; \
940 RTA_PUT(skb, type, 0, NULL); \
941 __start; })
942
943#define RTA_NEST_END(skb, start) \
944({ (start)->rta_len = ((skb)->tail - (unsigned char *) (start)); \
945 (skb)->len; })
946
947#define RTA_NEST_CANCEL(skb, start) \
948({ if (start) \
949 skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
950 -1; })
951
952#define RTA_GET_U8(rta) \
953({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \
954 goto rtattr_failure; \
955 *(u8 *) RTA_DATA(rta); })
956
957#define RTA_GET_U16(rta) \
958({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \
959 goto rtattr_failure; \
960 *(u16 *) RTA_DATA(rta); })
961
962#define RTA_GET_U32(rta) \
963({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \
964 goto rtattr_failure; \
965 *(u32 *) RTA_DATA(rta); })
966
967#define RTA_GET_U64(rta) \
968({ u64 _tmp; \
969 if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \
970 goto rtattr_failure; \
971 memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \
972 _tmp; })
973
974#define RTA_GET_FLAG(rta) (!!(rta))
975
976#define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ)
977#define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta)))
978
979static inline struct rtattr *
980__rta_reserve(struct sk_buff *skb, int attrtype, int attrlen)
981{
982 struct rtattr *rta;
983 int size = RTA_LENGTH(attrlen);
984
985 rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
986 rta->rta_type = attrtype;
987 rta->rta_len = size;
988 memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
989 return rta;
990}
991
992#define __RTA_PUT(skb, attrtype, attrlen) \
993({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
994 goto rtattr_failure; \
995 __rta_reserve(skb, attrtype, attrlen); })
996
997extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
998
999extern struct semaphore rtnl_sem;
1000
1001#define rtnl_shlock() down(&rtnl_sem)
1002#define rtnl_shlock_nowait() down_trylock(&rtnl_sem)
1003
1004#define rtnl_shunlock() do { up(&rtnl_sem); \
1005 if (rtnl && rtnl->sk_receive_queue.qlen) \
1006 rtnl->sk_data_ready(rtnl, 0); \
1007 } while(0)
1008
1009extern void rtnl_lock(void);
1010extern int rtnl_lock_interruptible(void);
1011extern void rtnl_unlock(void);
1012extern void rtnetlink_init(void);
1013
1014#define ASSERT_RTNL() do { \
1015 if (unlikely(down_trylock(&rtnl_sem) == 0)) { \
1016 up(&rtnl_sem); \
1017 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
1018 __FILE__, __LINE__); \
1019 dump_stack(); \
1020 } \
1021} while(0)
1022
1023#define BUG_TRAP(x) do { \
1024 if (unlikely(!(x))) { \
1025 printk(KERN_ERR "KERNEL: assertion (%s) failed at %s (%d)\n", \
1026 #x, __FILE__ , __LINE__); \
1027 } \
1028} while(0)
1029
1030#endif /* __KERNEL__ */
1031
1032
1033#endif /* __LINUX_RTNETLINK_H */