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rcu: Disable lockdep checking in RCU list-traversal primitives
[linux-2.6-block.git] / include / linux / rtnetlink.h
CommitLineData
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
16enum {
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,
5d5d9c97 107#define RTM_DELADDRLABEL RTM_DELADDRLABEL
2a8cc6c8
YH		 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
d94d9fee 130struct rtattr {
1da177e4
LT		 131 unsigned short rta_len;
132 unsigned short rta_type;
133};
134
135/* Macros to handle rtattributes */
136
137#define RTA_ALIGNTO 4
138#define RTA_ALIGN(len) ( ((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1) )
139#define RTA_OK(rta,len) ((len) >= (int)sizeof(struct rtattr) && \
140 (rta)->rta_len >= sizeof(struct rtattr) && \
141 (rta)->rta_len <= (len))
142#define RTA_NEXT(rta,attrlen) ((attrlen) -= RTA_ALIGN((rta)->rta_len), \
143 (struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len)))
144#define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len))
145#define RTA_SPACE(len) RTA_ALIGN(RTA_LENGTH(len))
146#define RTA_DATA(rta) ((void*)(((char*)(rta)) + RTA_LENGTH(0)))
147#define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0))
148
149
150
151
152/******************************************************************************
153 * Definitions used in routing table administration.
154 ****/
155
d94d9fee 156struct rtmsg {
1da177e4
LT		 157 unsigned char rtm_family;
158 unsigned char rtm_dst_len;
159 unsigned char rtm_src_len;
160 unsigned char rtm_tos;
161
162 unsigned char rtm_table; /* Routing table id */
163 unsigned char rtm_protocol; /* Routing protocol; see below */
164 unsigned char rtm_scope; /* See below */
165 unsigned char rtm_type; /* See below */
166
167 unsigned rtm_flags;
168};
169
170/* rtm_type */
171
d94d9fee 172enum {
1da177e4
LT		 173 RTN_UNSPEC,
174 RTN_UNICAST, /* Gateway or direct route */
175 RTN_LOCAL, /* Accept locally */
176 RTN_BROADCAST, /* Accept locally as broadcast,
177 send as broadcast */
178 RTN_ANYCAST, /* Accept locally as broadcast,
179 but send as unicast */
180 RTN_MULTICAST, /* Multicast route */
181 RTN_BLACKHOLE, /* Drop */
182 RTN_UNREACHABLE, /* Destination is unreachable */
183 RTN_PROHIBIT, /* Administratively prohibited */
184 RTN_THROW, /* Not in this table */
185 RTN_NAT, /* Translate this address */
186 RTN_XRESOLVE, /* Use external resolver */
187 __RTN_MAX
188};
189
190#define RTN_MAX (__RTN_MAX - 1)
191
192
193/* rtm_protocol */
194
195#define RTPROT_UNSPEC 0
196#define RTPROT_REDIRECT 1 /* Route installed by ICMP redirects;
197 not used by current IPv4 */
198#define RTPROT_KERNEL 2 /* Route installed by kernel */
199#define RTPROT_BOOT 3 /* Route installed during boot */
200#define RTPROT_STATIC 4 /* Route installed by administrator */
201
202/* Values of protocol >= RTPROT_STATIC are not interpreted by kernel;
203 they are just passed from user and back as is.
204 It will be used by hypothetical multiple routing daemons.
205 Note that protocol values should be standardized in order to
206 avoid conflicts.
207 */
208
209#define RTPROT_GATED 8 /* Apparently, GateD */
210#define RTPROT_RA 9 /* RDISC/ND router advertisements */
211#define RTPROT_MRT 10 /* Merit MRT */
212#define RTPROT_ZEBRA 11 /* Zebra */
213#define RTPROT_BIRD 12 /* BIRD */
214#define RTPROT_DNROUTED 13 /* DECnet routing daemon */
215#define RTPROT_XORP 14 /* XORP */
99cae7fc 216#define RTPROT_NTK 15 /* Netsukuku */
2e1ab634 217#define RTPROT_DHCP 16 /* DHCP client */
1da177e4
LT		 218
219/* rtm_scope
220
221 Really it is not scope, but sort of distance to the destination.
222 NOWHERE are reserved for not existing destinations, HOST is our
223 local addresses, LINK are destinations, located on directly attached
224 link and UNIVERSE is everywhere in the Universe.
225
226 Intermediate values are also possible f.e. interior routes
227 could be assigned a value between UNIVERSE and LINK.
228*/
229
d94d9fee 230enum rt_scope_t {
1da177e4
LT		 231 RT_SCOPE_UNIVERSE=0,
232/* User defined values */
233 RT_SCOPE_SITE=200,
234 RT_SCOPE_LINK=253,
235 RT_SCOPE_HOST=254,
236 RT_SCOPE_NOWHERE=255
237};
238
239/* rtm_flags */
240
241#define RTM_F_NOTIFY 0x100 /* Notify user of route change */
242#define RTM_F_CLONED 0x200 /* This route is cloned */
243#define RTM_F_EQUALIZE 0x400 /* Multipath equalizer: NI */
244#define RTM_F_PREFIX 0x800 /* Prefix addresses */
245
246/* Reserved table identifiers */
247
d94d9fee 248enum rt_class_t {
1da177e4
LT		 249 RT_TABLE_UNSPEC=0,
250/* User defined values */
709772e6 251 RT_TABLE_COMPAT=252,
1da177e4
LT		 252 RT_TABLE_DEFAULT=253,
253 RT_TABLE_MAIN=254,
254 RT_TABLE_LOCAL=255,
b801f549 255 RT_TABLE_MAX=0xFFFFFFFF
1da177e4 256};
1da177e4
LT		 257
258
259/* Routing message attributes */
260
d94d9fee 261enum rtattr_type_t {
1da177e4
LT		 262 RTA_UNSPEC,
263 RTA_DST,
264 RTA_SRC,
265 RTA_IIF,
266 RTA_OIF,
267 RTA_GATEWAY,
268 RTA_PRIORITY,
269 RTA_PREFSRC,
270 RTA_METRICS,
271 RTA_MULTIPATH,
1f9d11c7 272 RTA_PROTOINFO, /* no longer used */
1da177e4
LT		 273 RTA_FLOW,
274 RTA_CACHEINFO,
1f9d11c7 275 RTA_SESSION, /* no longer used */
e06e7c61 276 RTA_MP_ALGO, /* no longer used */
9e762a4a 277 RTA_TABLE,
1da177e4
LT		 278 __RTA_MAX
279};
280
281#define RTA_MAX (__RTA_MAX - 1)
282
283#define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg))))
284#define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg))
285
286/* RTM_MULTIPATH --- array of struct rtnexthop.
287 *
288 * "struct rtnexthop" describes all necessary nexthop information,
289 * i.e. parameters of path to a destination via this nexthop.
290 *
291 * At the moment it is impossible to set different prefsrc, mtu, window
292 * and rtt for different paths from multipath.
293 */
294
d94d9fee 295struct rtnexthop {
1da177e4
LT		 296 unsigned short rtnh_len;
297 unsigned char rtnh_flags;
298 unsigned char rtnh_hops;
299 int rtnh_ifindex;
300};
301
302/* rtnh_flags */
303
304#define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */
305#define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */
306#define RTNH_F_ONLINK 4 /* Gateway is forced on link */
307
308/* Macros to handle hexthops */
309
310#define RTNH_ALIGNTO 4
311#define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) )
312#define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \
313 ((int)(rtnh)->rtnh_len) <= (len))
314#define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len)))
315#define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len))
316#define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len))
317#define RTNH_DATA(rtnh) ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0)))
318
319/* RTM_CACHEINFO */
320
d94d9fee 321struct rta_cacheinfo {
1da177e4
LT		 322 __u32 rta_clntref;
323 __u32 rta_lastuse;
324 __s32 rta_expires;
325 __u32 rta_error;
326 __u32 rta_used;
327
328#define RTNETLINK_HAVE_PEERINFO 1
329 __u32 rta_id;
330 __u32 rta_ts;
331 __u32 rta_tsage;
332};
333
334/* RTM_METRICS --- array of struct rtattr with types of RTAX_* */
335
d94d9fee 336enum {
1da177e4
LT		 337 RTAX_UNSPEC,
338#define RTAX_UNSPEC RTAX_UNSPEC
339 RTAX_LOCK,
340#define RTAX_LOCK RTAX_LOCK
341 RTAX_MTU,
342#define RTAX_MTU RTAX_MTU
343 RTAX_WINDOW,
344#define RTAX_WINDOW RTAX_WINDOW
345 RTAX_RTT,
346#define RTAX_RTT RTAX_RTT
347 RTAX_RTTVAR,
348#define RTAX_RTTVAR RTAX_RTTVAR
349 RTAX_SSTHRESH,
350#define RTAX_SSTHRESH RTAX_SSTHRESH
351 RTAX_CWND,
352#define RTAX_CWND RTAX_CWND
353 RTAX_ADVMSS,
354#define RTAX_ADVMSS RTAX_ADVMSS
355 RTAX_REORDERING,
356#define RTAX_REORDERING RTAX_REORDERING
357 RTAX_HOPLIMIT,
358#define RTAX_HOPLIMIT RTAX_HOPLIMIT
359 RTAX_INITCWND,
360#define RTAX_INITCWND RTAX_INITCWND
361 RTAX_FEATURES,
362#define RTAX_FEATURES RTAX_FEATURES
05bb1fad
DM		 363 RTAX_RTO_MIN,
364#define RTAX_RTO_MIN RTAX_RTO_MIN
1da177e4
LT		 365 __RTAX_MAX
366};
367
368#define RTAX_MAX (__RTAX_MAX - 1)
369
370#define RTAX_FEATURE_ECN 0x00000001
bb5b7c11
DM		 371#define RTAX_FEATURE_SACK 0x00000002
372#define RTAX_FEATURE_TIMESTAMP 0x00000004
1da177e4
LT		 373#define RTAX_FEATURE_ALLFRAG 0x00000008
374
d94d9fee 375struct rta_session {
1da177e4 376 __u8 proto;
8a47077a
PM		 377 __u8 pad1;
378 __u16 pad2;
1da177e4
LT		 379
380 union {
381 struct {
382 __u16 sport;
383 __u16 dport;
384 } ports;
385
386 struct {
387 __u8 type;
388 __u8 code;
389 __u16 ident;
390 } icmpt;
391
392 __u32 spi;
393 } u;
394};
395
1da177e4
LT		 396/****
397 * General form of address family dependent message.
398 ****/
399
d94d9fee 400struct rtgenmsg {
1da177e4
LT		 401 unsigned char rtgen_family;
402};
403
404/*****************************************************************
405 * Link layer specific messages.
406 ****/
407
408/* struct ifinfomsg
409 * passes link level specific information, not dependent
410 * on network protocol.
411 */
412
d94d9fee 413struct ifinfomsg {
1da177e4
LT		 414 unsigned char ifi_family;
415 unsigned char __ifi_pad;
416 unsigned short ifi_type; /* ARPHRD_* */
417 int ifi_index; /* Link index */
418 unsigned ifi_flags; /* IFF_* flags */
419 unsigned ifi_change; /* IFF_* change mask */
420};
421
422/********************************************************************
423 * prefix information
424 ****/
425
d94d9fee 426struct prefixmsg {
1da177e4 427 unsigned char prefix_family;
8a47077a
PM		 428 unsigned char prefix_pad1;
429 unsigned short prefix_pad2;
1da177e4
LT		 430 int prefix_ifindex;
431 unsigned char prefix_type;
432 unsigned char prefix_len;
433 unsigned char prefix_flags;
8a47077a 434 unsigned char prefix_pad3;
1da177e4
LT		 435};
436
437enum
438{
439 PREFIX_UNSPEC,
440 PREFIX_ADDRESS,
441 PREFIX_CACHEINFO,
442 __PREFIX_MAX
443};
444
445#define PREFIX_MAX (__PREFIX_MAX - 1)
446
d94d9fee 447struct prefix_cacheinfo {
1da177e4
LT		 448 __u32 preferred_time;
449 __u32 valid_time;
450};
451
1da177e4
LT		 452
453/*****************************************************************
454 * Traffic control messages.
455 ****/
456
d94d9fee 457struct tcmsg {
1da177e4
LT		 458 unsigned char tcm_family;
459 unsigned char tcm__pad1;
460 unsigned short tcm__pad2;
461 int tcm_ifindex;
462 __u32 tcm_handle;
463 __u32 tcm_parent;
464 __u32 tcm_info;
465};
466
d94d9fee 467enum {
1da177e4
LT		 468 TCA_UNSPEC,
469 TCA_KIND,
470 TCA_OPTIONS,
471 TCA_STATS,
472 TCA_XSTATS,
473 TCA_RATE,
474 TCA_FCNT,
475 TCA_STATS2,
175f9c1b 476 TCA_STAB,
1da177e4
LT		 477 __TCA_MAX
478};
479
480#define TCA_MAX (__TCA_MAX - 1)
481
482#define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg))))
483#define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg))
484
31910575
PY		 485/********************************************************************
486 * Neighbor Discovery userland options
487 ****/
488
d94d9fee 489struct nduseroptmsg {
31910575
PY		 490 unsigned char nduseropt_family;
491 unsigned char nduseropt_pad1;
492 unsigned short nduseropt_opts_len; /* Total length of options */
dbb2ed24 493 int nduseropt_ifindex;
31910575
PY		 494 __u8 nduseropt_icmp_type;
495 __u8 nduseropt_icmp_code;
496 unsigned short nduseropt_pad2;
dbb2ed24 497 unsigned int nduseropt_pad3;
31910575
PY		 498 /* Followed by one or more ND options */
499};
500
d94d9fee 501enum {
31910575
PY		 502 NDUSEROPT_UNSPEC,
503 NDUSEROPT_SRCADDR,
504 __NDUSEROPT_MAX
505};
506
507#define NDUSEROPT_MAX (__NDUSEROPT_MAX - 1)
508
ac6d439d
PM		 509#ifndef __KERNEL__
510/* RTnetlink multicast groups - backwards compatibility for userspace */
1da177e4
LT		 511#define RTMGRP_LINK 1
512#define RTMGRP_NOTIFY 2
513#define RTMGRP_NEIGH 4
514#define RTMGRP_TC 8
515
516#define RTMGRP_IPV4_IFADDR 0x10
517#define RTMGRP_IPV4_MROUTE 0x20
518#define RTMGRP_IPV4_ROUTE 0x40
a5cdc030 519#define RTMGRP_IPV4_RULE 0x80
1da177e4
LT		 520
521#define RTMGRP_IPV6_IFADDR 0x100
522#define RTMGRP_IPV6_MROUTE 0x200
523#define RTMGRP_IPV6_ROUTE 0x400
524#define RTMGRP_IPV6_IFINFO 0x800
525
526#define RTMGRP_DECnet_IFADDR 0x1000
527#define RTMGRP_DECnet_ROUTE 0x4000
528
529#define RTMGRP_IPV6_PREFIX 0x20000
ac6d439d
PM		 530#endif
531
532/* RTnetlink multicast groups */
533enum rtnetlink_groups {
534 RTNLGRP_NONE,
535#define RTNLGRP_NONE RTNLGRP_NONE
536 RTNLGRP_LINK,
537#define RTNLGRP_LINK RTNLGRP_LINK
538 RTNLGRP_NOTIFY,
539#define RTNLGRP_NOTIFY RTNLGRP_NOTIFY
540 RTNLGRP_NEIGH,
541#define RTNLGRP_NEIGH RTNLGRP_NEIGH
542 RTNLGRP_TC,
543#define RTNLGRP_TC RTNLGRP_TC
544 RTNLGRP_IPV4_IFADDR,
545#define RTNLGRP_IPV4_IFADDR RTNLGRP_IPV4_IFADDR
546 RTNLGRP_IPV4_MROUTE,
547#define RTNLGRP_IPV4_MROUTE RTNLGRP_IPV4_MROUTE
548 RTNLGRP_IPV4_ROUTE,
549#define RTNLGRP_IPV4_ROUTE RTNLGRP_IPV4_ROUTE
a5cdc030
PM		 550 RTNLGRP_IPV4_RULE,
551#define RTNLGRP_IPV4_RULE RTNLGRP_IPV4_RULE
ac6d439d
PM		 552 RTNLGRP_IPV6_IFADDR,
553#define RTNLGRP_IPV6_IFADDR RTNLGRP_IPV6_IFADDR
554 RTNLGRP_IPV6_MROUTE,
555#define RTNLGRP_IPV6_MROUTE RTNLGRP_IPV6_MROUTE
556 RTNLGRP_IPV6_ROUTE,
557#define RTNLGRP_IPV6_ROUTE RTNLGRP_IPV6_ROUTE
558 RTNLGRP_IPV6_IFINFO,
559#define RTNLGRP_IPV6_IFINFO RTNLGRP_IPV6_IFINFO
560 RTNLGRP_DECnet_IFADDR,
561#define RTNLGRP_DECnet_IFADDR RTNLGRP_DECnet_IFADDR
6b80ebed 562 RTNLGRP_NOP2,
ac6d439d
PM		 563 RTNLGRP_DECnet_ROUTE,
564#define RTNLGRP_DECnet_ROUTE RTNLGRP_DECnet_ROUTE
a8731cbf
SW		 565 RTNLGRP_DECnet_RULE,
566#define RTNLGRP_DECnet_RULE RTNLGRP_DECnet_RULE
6b80ebed 567 RTNLGRP_NOP4,
ac6d439d
PM		 568 RTNLGRP_IPV6_PREFIX,
569#define RTNLGRP_IPV6_PREFIX RTNLGRP_IPV6_PREFIX
101367c2
TG		 570 RTNLGRP_IPV6_RULE,
571#define RTNLGRP_IPV6_RULE RTNLGRP_IPV6_RULE
31910575
PY		 572 RTNLGRP_ND_USEROPT,
573#define RTNLGRP_ND_USEROPT RTNLGRP_ND_USEROPT
bce7b154
RDC		 574 RTNLGRP_PHONET_IFADDR,
575#define RTNLGRP_PHONET_IFADDR RTNLGRP_PHONET_IFADDR
576 RTNLGRP_PHONET_ROUTE,
577#define RTNLGRP_PHONET_ROUTE RTNLGRP_PHONET_ROUTE
ac6d439d
PM		 578 __RTNLGRP_MAX
579};
580#define RTNLGRP_MAX (__RTNLGRP_MAX - 1)
1da177e4
LT		 581
582/* TC action piece */
d94d9fee 583struct tcamsg {
1da177e4
LT		 584 unsigned char tca_family;
585 unsigned char tca__pad1;
586 unsigned short tca__pad2;
587};
588#define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg))))
589#define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg))
590#define TCA_ACT_TAB 1 /* attr type must be >=1 */
591#define TCAA_MAX 1
592
593/* End of information exported to user level */
594
595#ifdef __KERNEL__
596
6756ae4b 597#include <linux/mutex.h>
1da177e4 598
1da177e4
LT		 599static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
600{
601 int len = strlen(str) + 1;
602 return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len);
603}
604
97c53cac
DL		 605extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo);
606extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid);
1ce85fe4
PNA		 607extern void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid,
608 u32 group, struct nlmsghdr *nlh, gfp_t flags);
97c53cac 609extern void rtnl_set_sk_err(struct net *net, u32 group, int error);
1da177e4 610extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
e3703b3d
TG		 611extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
612 u32 id, u32 ts, u32 tsage, long expires,
613 u32 error);
1da177e4
LT		 614
615extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data);
616
617#define RTA_PUT(skb, attrtype, attrlen, data) \
618({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
619 goto rtattr_failure; \
620 __rta_fill(skb, attrtype, attrlen, data); })
621
d675c989 622#define RTA_APPEND(skb, attrlen, data) \
1da177e4
LT		 623({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \
624 goto rtattr_failure; \
d675c989
TG		 625 memcpy(skb_put(skb, attrlen), data, attrlen); })
626
627#define RTA_PUT_NOHDR(skb, attrlen, data) \
b3563c4f 628({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \
27a884dc 629 memset(skb_tail_pointer(skb) - (RTA_ALIGN(attrlen) - attrlen), 0, \
b3563c4f 630 RTA_ALIGN(attrlen) - attrlen); })
00768244 631
8f48bcd4
TG		 632#define RTA_PUT_U8(skb, attrtype, value) \
633({ u8 _tmp = (value); \
634 RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); })
635
636#define RTA_PUT_U16(skb, attrtype, value) \
637({ u16 _tmp = (value); \
638 RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); })
639
00768244
TG		 640#define RTA_PUT_U32(skb, attrtype, value) \
641({ u32 _tmp = (value); \
642 RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); })
643
644#define RTA_PUT_U64(skb, attrtype, value) \
645({ u64 _tmp = (value); \
646 RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); })
647
648#define RTA_PUT_SECS(skb, attrtype, value) \
649 RTA_PUT_U64(skb, attrtype, (value) / HZ)
650
651#define RTA_PUT_MSECS(skb, attrtype, value) \
652 RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value))
653
654#define RTA_PUT_STRING(skb, attrtype, value) \
655 RTA_PUT(skb, attrtype, strlen(value) + 1, value)
656
8f48bcd4
TG		 657#define RTA_PUT_FLAG(skb, attrtype) \
658 RTA_PUT(skb, attrtype, 0, NULL);
659
00768244 660#define RTA_NEST(skb, type) \
27a884dc 661({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
00768244
TG		 662 RTA_PUT(skb, type, 0, NULL); \
663 __start; })
664
665#define RTA_NEST_END(skb, start) \
27a884dc 666({ (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
00768244
TG		 667 (skb)->len; })
668
afdc3238
PM		 669#define RTA_NEST_COMPAT(skb, type, attrlen, data) \
670({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
671 RTA_PUT(skb, type, attrlen, data); \
672 RTA_NEST(skb, type); \
673 __start; })
674
675#define RTA_NEST_COMPAT_END(skb, start) \
676({ struct rtattr *__nest = (void *)(start) + NLMSG_ALIGN((start)->rta_len); \
677 (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
678 RTA_NEST_END(skb, __nest); \
679 (skb)->len; })
680
00768244 681#define RTA_NEST_CANCEL(skb, start) \
c52a3f89
TG		 682({ if (start) \
683 skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
00768244
TG		 684 -1; })
685
8f48bcd4
TG		 686#define RTA_GET_U8(rta) \
687({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \
688 goto rtattr_failure; \
689 *(u8 *) RTA_DATA(rta); })
690
691#define RTA_GET_U16(rta) \
692({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \
693 goto rtattr_failure; \
694 *(u16 *) RTA_DATA(rta); })
695
00768244
TG		 696#define RTA_GET_U32(rta) \
697({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \
698 goto rtattr_failure; \
699 *(u32 *) RTA_DATA(rta); })
700
701#define RTA_GET_U64(rta) \
702({ u64 _tmp; \
703 if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \
704 goto rtattr_failure; \
705 memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \
706 _tmp; })
707
8f48bcd4
TG		 708#define RTA_GET_FLAG(rta) (!!(rta))
709
00768244
TG		 710#define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ)
711#define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta)))
1da177e4
LT		 712
713static inline struct rtattr *
714__rta_reserve(struct sk_buff *skb, int attrtype, int attrlen)
715{
716 struct rtattr *rta;
717 int size = RTA_LENGTH(attrlen);
718
719 rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
720 rta->rta_type = attrtype;
721 rta->rta_len = size;
b3563c4f 722 memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
1da177e4
LT		 723 return rta;
724}
725
726#define __RTA_PUT(skb, attrtype, attrlen) \
727({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
728 goto rtattr_failure; \
729 __rta_reserve(skb, attrtype, attrlen); })
730
731extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
732
6756ae4b 733/* RTNL is used as a global lock for all changes to network configuration */
1da177e4 734extern void rtnl_lock(void);
1da177e4 735extern void rtnl_unlock(void);
6756ae4b 736extern int rtnl_trylock(void);
c9c1014b 737extern int rtnl_is_locked(void);
6756ae4b 738
1da177e4 739extern void rtnetlink_init(void);
6756ae4b 740extern void __rtnl_unlock(void);
1da177e4
LT		 741
742#define ASSERT_RTNL() do { \
c9c1014b 743 if (unlikely(!rtnl_is_locked())) { \
1da177e4
LT		 744 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
745 __FILE__, __LINE__); \
746 dump_stack(); \
747 } \
748} while(0)
749
9e762a4a
PM		 750static inline u32 rtm_get_table(struct rtattr **rta, u8 table)
751{
752 return RTA_GET_U32(rta[RTA_TABLE-1]);
753rtattr_failure:
754 return table;
755}
756
1da177e4
LT		 757#endif /* __KERNEL__ */
758
759
760#endif /* __LINUX_RTNETLINK_H */
Linux 6.x block layer and io_uring tree(s)