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atl1: do not drop rx/tx interrupts before they are scheduled
[linux-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 9
25239cee
PM		 10/* rtnetlink families. Values up to 127 are reserved for real address
11 * families, values above 128 may be used arbitrarily.
12 */
13#define RTNL_FAMILY_IPMR 128
d1db275d
PM		 14#define RTNL_FAMILY_IP6MR 129
15#define RTNL_FAMILY_MAX 129
25239cee 16
1da177e4
LT		 17/****
18 * Routing/neighbour discovery messages.
19 ****/
20
21/* Types of messages */
22
23enum {
24 RTM_BASE = 16,
25#define RTM_BASE RTM_BASE
26
27 RTM_NEWLINK = 16,
28#define RTM_NEWLINK RTM_NEWLINK
29 RTM_DELLINK,
30#define RTM_DELLINK RTM_DELLINK
31 RTM_GETLINK,
32#define RTM_GETLINK RTM_GETLINK
33 RTM_SETLINK,
34#define RTM_SETLINK RTM_SETLINK
35
36 RTM_NEWADDR = 20,
37#define RTM_NEWADDR RTM_NEWADDR
38 RTM_DELADDR,
39#define RTM_DELADDR RTM_DELADDR
40 RTM_GETADDR,
41#define RTM_GETADDR RTM_GETADDR
42
43 RTM_NEWROUTE = 24,
44#define RTM_NEWROUTE RTM_NEWROUTE
45 RTM_DELROUTE,
46#define RTM_DELROUTE RTM_DELROUTE
47 RTM_GETROUTE,
48#define RTM_GETROUTE RTM_GETROUTE
49
50 RTM_NEWNEIGH = 28,
51#define RTM_NEWNEIGH RTM_NEWNEIGH
52 RTM_DELNEIGH,
53#define RTM_DELNEIGH RTM_DELNEIGH
54 RTM_GETNEIGH,
55#define RTM_GETNEIGH RTM_GETNEIGH
56
57 RTM_NEWRULE = 32,
58#define RTM_NEWRULE RTM_NEWRULE
59 RTM_DELRULE,
60#define RTM_DELRULE RTM_DELRULE
61 RTM_GETRULE,
62#define RTM_GETRULE RTM_GETRULE
63
64 RTM_NEWQDISC = 36,
65#define RTM_NEWQDISC RTM_NEWQDISC
66 RTM_DELQDISC,
67#define RTM_DELQDISC RTM_DELQDISC
68 RTM_GETQDISC,
69#define RTM_GETQDISC RTM_GETQDISC
70
71 RTM_NEWTCLASS = 40,
72#define RTM_NEWTCLASS RTM_NEWTCLASS
73 RTM_DELTCLASS,
74#define RTM_DELTCLASS RTM_DELTCLASS
75 RTM_GETTCLASS,
76#define RTM_GETTCLASS RTM_GETTCLASS
77
78 RTM_NEWTFILTER = 44,
79#define RTM_NEWTFILTER RTM_NEWTFILTER
80 RTM_DELTFILTER,
81#define RTM_DELTFILTER RTM_DELTFILTER
82 RTM_GETTFILTER,
83#define RTM_GETTFILTER RTM_GETTFILTER
84
85 RTM_NEWACTION = 48,
86#define RTM_NEWACTION RTM_NEWACTION
87 RTM_DELACTION,
88#define RTM_DELACTION RTM_DELACTION
89 RTM_GETACTION,
90#define RTM_GETACTION RTM_GETACTION
91
92 RTM_NEWPREFIX = 52,
93#define RTM_NEWPREFIX RTM_NEWPREFIX
1da177e4
LT		 94
95 RTM_GETMULTICAST = 58,
96#define RTM_GETMULTICAST RTM_GETMULTICAST
97
98 RTM_GETANYCAST = 62,
99#define RTM_GETANYCAST RTM_GETANYCAST
100
c7fb64db
TG		 101 RTM_NEWNEIGHTBL = 64,
102#define RTM_NEWNEIGHTBL RTM_NEWNEIGHTBL
103 RTM_GETNEIGHTBL = 66,
104#define RTM_GETNEIGHTBL RTM_GETNEIGHTBL
105 RTM_SETNEIGHTBL,
106#define RTM_SETNEIGHTBL RTM_SETNEIGHTBL
107
31910575
PY		 108 RTM_NEWNDUSEROPT = 68,
109#define RTM_NEWNDUSEROPT RTM_NEWNDUSEROPT
110
2a8cc6c8
YH		 111 RTM_NEWADDRLABEL = 72,
112#define RTM_NEWADDRLABEL RTM_NEWADDRLABEL
113 RTM_DELADDRLABEL,
5d5d9c97 114#define RTM_DELADDRLABEL RTM_DELADDRLABEL
2a8cc6c8
YH		 115 RTM_GETADDRLABEL,
116#define RTM_GETADDRLABEL RTM_GETADDRLABEL
117
2f90b865
AD		 118 RTM_GETDCB = 78,
119#define RTM_GETDCB RTM_GETDCB
120 RTM_SETDCB,
121#define RTM_SETDCB RTM_SETDCB
122
d775fc09
TG		 123 __RTM_MAX,
124#define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1)
1da177e4
LT		 125};
126
db46edc6
TG		 127#define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE)
128#define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2)
f90a0a74
TG		 129#define RTM_FAM(cmd) (((cmd) - RTM_BASE) >> 2)
130
1da177e4
LT		 131/*
132 Generic structure for encapsulation of optional route information.
133 It is reminiscent of sockaddr, but with sa_family replaced
134 with attribute type.
135 */
136
d94d9fee 137struct rtattr {
1da177e4
LT		 138 unsigned short rta_len;
139 unsigned short rta_type;
140};
141
142/* Macros to handle rtattributes */
143
144#define RTA_ALIGNTO 4
145#define RTA_ALIGN(len) ( ((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1) )
146#define RTA_OK(rta,len) ((len) >= (int)sizeof(struct rtattr) && \
147 (rta)->rta_len >= sizeof(struct rtattr) && \
148 (rta)->rta_len <= (len))
149#define RTA_NEXT(rta,attrlen) ((attrlen) -= RTA_ALIGN((rta)->rta_len), \
150 (struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len)))
151#define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len))
152#define RTA_SPACE(len) RTA_ALIGN(RTA_LENGTH(len))
153#define RTA_DATA(rta) ((void*)(((char*)(rta)) + RTA_LENGTH(0)))
154#define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0))
155
156
157
158
159/******************************************************************************
160 * Definitions used in routing table administration.
161 ****/
162
d94d9fee 163struct rtmsg {
1da177e4
LT		 164 unsigned char rtm_family;
165 unsigned char rtm_dst_len;
166 unsigned char rtm_src_len;
167 unsigned char rtm_tos;
168
169 unsigned char rtm_table; /* Routing table id */
170 unsigned char rtm_protocol; /* Routing protocol; see below */
171 unsigned char rtm_scope; /* See below */
172 unsigned char rtm_type; /* See below */
173
174 unsigned rtm_flags;
175};
176
177/* rtm_type */
178
d94d9fee 179enum {
1da177e4
LT		 180 RTN_UNSPEC,
181 RTN_UNICAST, /* Gateway or direct route */
182 RTN_LOCAL, /* Accept locally */
183 RTN_BROADCAST, /* Accept locally as broadcast,
184 send as broadcast */
185 RTN_ANYCAST, /* Accept locally as broadcast,
186 but send as unicast */
187 RTN_MULTICAST, /* Multicast route */
188 RTN_BLACKHOLE, /* Drop */
189 RTN_UNREACHABLE, /* Destination is unreachable */
190 RTN_PROHIBIT, /* Administratively prohibited */
191 RTN_THROW, /* Not in this table */
192 RTN_NAT, /* Translate this address */
193 RTN_XRESOLVE, /* Use external resolver */
194 __RTN_MAX
195};
196
197#define RTN_MAX (__RTN_MAX - 1)
198
199
200/* rtm_protocol */
201
202#define RTPROT_UNSPEC 0
203#define RTPROT_REDIRECT 1 /* Route installed by ICMP redirects;
204 not used by current IPv4 */
205#define RTPROT_KERNEL 2 /* Route installed by kernel */
206#define RTPROT_BOOT 3 /* Route installed during boot */
207#define RTPROT_STATIC 4 /* Route installed by administrator */
208
209/* Values of protocol >= RTPROT_STATIC are not interpreted by kernel;
210 they are just passed from user and back as is.
211 It will be used by hypothetical multiple routing daemons.
212 Note that protocol values should be standardized in order to
213 avoid conflicts.
214 */
215
216#define RTPROT_GATED 8 /* Apparently, GateD */
217#define RTPROT_RA 9 /* RDISC/ND router advertisements */
218#define RTPROT_MRT 10 /* Merit MRT */
219#define RTPROT_ZEBRA 11 /* Zebra */
220#define RTPROT_BIRD 12 /* BIRD */
221#define RTPROT_DNROUTED 13 /* DECnet routing daemon */
222#define RTPROT_XORP 14 /* XORP */
99cae7fc 223#define RTPROT_NTK 15 /* Netsukuku */
2e1ab634 224#define RTPROT_DHCP 16 /* DHCP client */
1da177e4
LT		 225
226/* rtm_scope
227
228 Really it is not scope, but sort of distance to the destination.
229 NOWHERE are reserved for not existing destinations, HOST is our
230 local addresses, LINK are destinations, located on directly attached
231 link and UNIVERSE is everywhere in the Universe.
232
233 Intermediate values are also possible f.e. interior routes
234 could be assigned a value between UNIVERSE and LINK.
235*/
236
d94d9fee 237enum rt_scope_t {
1da177e4
LT		 238 RT_SCOPE_UNIVERSE=0,
239/* User defined values */
240 RT_SCOPE_SITE=200,
241 RT_SCOPE_LINK=253,
242 RT_SCOPE_HOST=254,
243 RT_SCOPE_NOWHERE=255
244};
245
246/* rtm_flags */
247
248#define RTM_F_NOTIFY 0x100 /* Notify user of route change */
249#define RTM_F_CLONED 0x200 /* This route is cloned */
250#define RTM_F_EQUALIZE 0x400 /* Multipath equalizer: NI */
251#define RTM_F_PREFIX 0x800 /* Prefix addresses */
252
253/* Reserved table identifiers */
254
d94d9fee 255enum rt_class_t {
1da177e4
LT		 256 RT_TABLE_UNSPEC=0,
257/* User defined values */
709772e6 258 RT_TABLE_COMPAT=252,
1da177e4
LT		 259 RT_TABLE_DEFAULT=253,
260 RT_TABLE_MAIN=254,
261 RT_TABLE_LOCAL=255,
b801f549 262 RT_TABLE_MAX=0xFFFFFFFF
1da177e4 263};
1da177e4
LT		 264
265
266/* Routing message attributes */
267
d94d9fee 268enum rtattr_type_t {
1da177e4
LT		 269 RTA_UNSPEC,
270 RTA_DST,
271 RTA_SRC,
272 RTA_IIF,
273 RTA_OIF,
274 RTA_GATEWAY,
275 RTA_PRIORITY,
276 RTA_PREFSRC,
277 RTA_METRICS,
278 RTA_MULTIPATH,
1f9d11c7 279 RTA_PROTOINFO, /* no longer used */
1da177e4
LT		 280 RTA_FLOW,
281 RTA_CACHEINFO,
1f9d11c7 282 RTA_SESSION, /* no longer used */
e06e7c61 283 RTA_MP_ALGO, /* no longer used */
9e762a4a 284 RTA_TABLE,
963bfeee 285 RTA_MARK,
1da177e4
LT		 286 __RTA_MAX
287};
288
289#define RTA_MAX (__RTA_MAX - 1)
290
291#define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg))))
292#define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg))
293
294/* RTM_MULTIPATH --- array of struct rtnexthop.
295 *
296 * "struct rtnexthop" describes all necessary nexthop information,
297 * i.e. parameters of path to a destination via this nexthop.
298 *
299 * At the moment it is impossible to set different prefsrc, mtu, window
300 * and rtt for different paths from multipath.
301 */
302
d94d9fee 303struct rtnexthop {
1da177e4
LT		 304 unsigned short rtnh_len;
305 unsigned char rtnh_flags;
306 unsigned char rtnh_hops;
307 int rtnh_ifindex;
308};
309
310/* rtnh_flags */
311
312#define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */
313#define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */
314#define RTNH_F_ONLINK 4 /* Gateway is forced on link */
315
316/* Macros to handle hexthops */
317
318#define RTNH_ALIGNTO 4
319#define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) )
320#define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \
321 ((int)(rtnh)->rtnh_len) <= (len))
322#define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len)))
323#define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len))
324#define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len))
325#define RTNH_DATA(rtnh) ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0)))
326
327/* RTM_CACHEINFO */
328
d94d9fee 329struct rta_cacheinfo {
1da177e4
LT		 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
d94d9fee 344enum {
1da177e4
LT		 345 RTAX_UNSPEC,
346#define RTAX_UNSPEC RTAX_UNSPEC
347 RTAX_LOCK,
348#define RTAX_LOCK RTAX_LOCK
349 RTAX_MTU,
350#define RTAX_MTU RTAX_MTU
351 RTAX_WINDOW,
352#define RTAX_WINDOW RTAX_WINDOW
353 RTAX_RTT,
354#define RTAX_RTT RTAX_RTT
355 RTAX_RTTVAR,
356#define RTAX_RTTVAR RTAX_RTTVAR
357 RTAX_SSTHRESH,
358#define RTAX_SSTHRESH RTAX_SSTHRESH
359 RTAX_CWND,
360#define RTAX_CWND RTAX_CWND
361 RTAX_ADVMSS,
362#define RTAX_ADVMSS RTAX_ADVMSS
363 RTAX_REORDERING,
364#define RTAX_REORDERING RTAX_REORDERING
365 RTAX_HOPLIMIT,
366#define RTAX_HOPLIMIT RTAX_HOPLIMIT
367 RTAX_INITCWND,
368#define RTAX_INITCWND RTAX_INITCWND
369 RTAX_FEATURES,
370#define RTAX_FEATURES RTAX_FEATURES
05bb1fad
DM		 371 RTAX_RTO_MIN,
372#define RTAX_RTO_MIN RTAX_RTO_MIN
31d12926 373 RTAX_INITRWND,
374#define RTAX_INITRWND RTAX_INITRWND
1da177e4
LT		 375 __RTAX_MAX
376};
377
378#define RTAX_MAX (__RTAX_MAX - 1)
379
380#define RTAX_FEATURE_ECN 0x00000001
bb5b7c11
DM		 381#define RTAX_FEATURE_SACK 0x00000002
382#define RTAX_FEATURE_TIMESTAMP 0x00000004
1da177e4
LT		 383#define RTAX_FEATURE_ALLFRAG 0x00000008
384
d94d9fee 385struct rta_session {
1da177e4 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
d94d9fee 410struct rtgenmsg {
1da177e4
LT		 411 unsigned char rtgen_family;
412};
413
414/*****************************************************************
415 * Link layer specific messages.
416 ****/
417
418/* struct ifinfomsg
419 * passes link level specific information, not dependent
420 * on network protocol.
421 */
422
d94d9fee 423struct ifinfomsg {
1da177e4
LT		 424 unsigned char ifi_family;
425 unsigned char __ifi_pad;
426 unsigned short ifi_type; /* ARPHRD_* */
427 int ifi_index; /* Link index */
428 unsigned ifi_flags; /* IFF_* flags */
429 unsigned ifi_change; /* IFF_* change mask */
430};
431
432/********************************************************************
433 * prefix information
434 ****/
435
d94d9fee 436struct prefixmsg {
1da177e4 437 unsigned char prefix_family;
8a47077a
PM		 438 unsigned char prefix_pad1;
439 unsigned short prefix_pad2;
1da177e4
LT		 440 int prefix_ifindex;
441 unsigned char prefix_type;
442 unsigned char prefix_len;
443 unsigned char prefix_flags;
8a47077a 444 unsigned char prefix_pad3;
1da177e4
LT		 445};
446
447enum
448{
449 PREFIX_UNSPEC,
450 PREFIX_ADDRESS,
451 PREFIX_CACHEINFO,
452 __PREFIX_MAX
453};
454
455#define PREFIX_MAX (__PREFIX_MAX - 1)
456
d94d9fee 457struct prefix_cacheinfo {
1da177e4
LT		 458 __u32 preferred_time;
459 __u32 valid_time;
460};
461
1da177e4
LT		 462
463/*****************************************************************
464 * Traffic control messages.
465 ****/
466
d94d9fee 467struct tcmsg {
1da177e4
LT		 468 unsigned char tcm_family;
469 unsigned char tcm__pad1;
470 unsigned short tcm__pad2;
471 int tcm_ifindex;
472 __u32 tcm_handle;
473 __u32 tcm_parent;
474 __u32 tcm_info;
475};
476
d94d9fee 477enum {
1da177e4
LT		 478 TCA_UNSPEC,
479 TCA_KIND,
480 TCA_OPTIONS,
481 TCA_STATS,
482 TCA_XSTATS,
483 TCA_RATE,
484 TCA_FCNT,
485 TCA_STATS2,
175f9c1b 486 TCA_STAB,
1da177e4
LT		 487 __TCA_MAX
488};
489
490#define TCA_MAX (__TCA_MAX - 1)
491
492#define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg))))
493#define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg))
494
31910575
PY		 495/********************************************************************
496 * Neighbor Discovery userland options
497 ****/
498
d94d9fee 499struct nduseroptmsg {
31910575
PY		 500 unsigned char nduseropt_family;
501 unsigned char nduseropt_pad1;
502 unsigned short nduseropt_opts_len; /* Total length of options */
dbb2ed24 503 int nduseropt_ifindex;
31910575
PY		 504 __u8 nduseropt_icmp_type;
505 __u8 nduseropt_icmp_code;
506 unsigned short nduseropt_pad2;
dbb2ed24 507 unsigned int nduseropt_pad3;
31910575
PY		 508 /* Followed by one or more ND options */
509};
510
d94d9fee 511enum {
31910575
PY		 512 NDUSEROPT_UNSPEC,
513 NDUSEROPT_SRCADDR,
514 __NDUSEROPT_MAX
515};
516
517#define NDUSEROPT_MAX (__NDUSEROPT_MAX - 1)
518
ac6d439d
PM		 519#ifndef __KERNEL__
520/* RTnetlink multicast groups - backwards compatibility for userspace */
1da177e4
LT		 521#define RTMGRP_LINK 1
522#define RTMGRP_NOTIFY 2
523#define RTMGRP_NEIGH 4
524#define RTMGRP_TC 8
525
526#define RTMGRP_IPV4_IFADDR 0x10
527#define RTMGRP_IPV4_MROUTE 0x20
528#define RTMGRP_IPV4_ROUTE 0x40
a5cdc030 529#define RTMGRP_IPV4_RULE 0x80
1da177e4
LT		 530
531#define RTMGRP_IPV6_IFADDR 0x100
532#define RTMGRP_IPV6_MROUTE 0x200
533#define RTMGRP_IPV6_ROUTE 0x400
534#define RTMGRP_IPV6_IFINFO 0x800
535
536#define RTMGRP_DECnet_IFADDR 0x1000
537#define RTMGRP_DECnet_ROUTE 0x4000
538
539#define RTMGRP_IPV6_PREFIX 0x20000
ac6d439d
PM		 540#endif
541
542/* RTnetlink multicast groups */
543enum rtnetlink_groups {
544 RTNLGRP_NONE,
545#define RTNLGRP_NONE RTNLGRP_NONE
546 RTNLGRP_LINK,
547#define RTNLGRP_LINK RTNLGRP_LINK
548 RTNLGRP_NOTIFY,
549#define RTNLGRP_NOTIFY RTNLGRP_NOTIFY
550 RTNLGRP_NEIGH,
551#define RTNLGRP_NEIGH RTNLGRP_NEIGH
552 RTNLGRP_TC,
553#define RTNLGRP_TC RTNLGRP_TC
554 RTNLGRP_IPV4_IFADDR,
555#define RTNLGRP_IPV4_IFADDR RTNLGRP_IPV4_IFADDR
556 RTNLGRP_IPV4_MROUTE,
557#define RTNLGRP_IPV4_MROUTE RTNLGRP_IPV4_MROUTE
558 RTNLGRP_IPV4_ROUTE,
559#define RTNLGRP_IPV4_ROUTE RTNLGRP_IPV4_ROUTE
a5cdc030
PM		 560 RTNLGRP_IPV4_RULE,
561#define RTNLGRP_IPV4_RULE RTNLGRP_IPV4_RULE
ac6d439d
PM		 562 RTNLGRP_IPV6_IFADDR,
563#define RTNLGRP_IPV6_IFADDR RTNLGRP_IPV6_IFADDR
564 RTNLGRP_IPV6_MROUTE,
565#define RTNLGRP_IPV6_MROUTE RTNLGRP_IPV6_MROUTE
566 RTNLGRP_IPV6_ROUTE,
567#define RTNLGRP_IPV6_ROUTE RTNLGRP_IPV6_ROUTE
568 RTNLGRP_IPV6_IFINFO,
569#define RTNLGRP_IPV6_IFINFO RTNLGRP_IPV6_IFINFO
570 RTNLGRP_DECnet_IFADDR,
571#define RTNLGRP_DECnet_IFADDR RTNLGRP_DECnet_IFADDR
6b80ebed 572 RTNLGRP_NOP2,
ac6d439d
PM		 573 RTNLGRP_DECnet_ROUTE,
574#define RTNLGRP_DECnet_ROUTE RTNLGRP_DECnet_ROUTE
a8731cbf
SW		 575 RTNLGRP_DECnet_RULE,
576#define RTNLGRP_DECnet_RULE RTNLGRP_DECnet_RULE
6b80ebed 577 RTNLGRP_NOP4,
ac6d439d
PM		 578 RTNLGRP_IPV6_PREFIX,
579#define RTNLGRP_IPV6_PREFIX RTNLGRP_IPV6_PREFIX
101367c2
TG		 580 RTNLGRP_IPV6_RULE,
581#define RTNLGRP_IPV6_RULE RTNLGRP_IPV6_RULE
31910575
PY		 582 RTNLGRP_ND_USEROPT,
583#define RTNLGRP_ND_USEROPT RTNLGRP_ND_USEROPT
bce7b154
RDC		 584 RTNLGRP_PHONET_IFADDR,
585#define RTNLGRP_PHONET_IFADDR RTNLGRP_PHONET_IFADDR
586 RTNLGRP_PHONET_ROUTE,
587#define RTNLGRP_PHONET_ROUTE RTNLGRP_PHONET_ROUTE
314b4778
JF		 588 RTNLGRP_DCB,
589#define RTNLGRP_DCB RTNLGRP_DCB
ac6d439d
PM		 590 __RTNLGRP_MAX
591};
592#define RTNLGRP_MAX (__RTNLGRP_MAX - 1)
1da177e4
LT		 593
594/* TC action piece */
d94d9fee 595struct tcamsg {
1da177e4
LT		 596 unsigned char tca_family;
597 unsigned char tca__pad1;
598 unsigned short tca__pad2;
599};
600#define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg))))
601#define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg))
602#define TCA_ACT_TAB 1 /* attr type must be >=1 */
603#define TCAA_MAX 1
604
115c9b81
GR		 605/* New extended info filters for IFLA_EXT_MASK */
606#define RTEXT_FILTER_VF (1 << 0)
607
1da177e4
LT		 608/* End of information exported to user level */
609
610#ifdef __KERNEL__
611
6756ae4b 612#include <linux/mutex.h>
3b42a96d 613#include <linux/netdevice.h>
1da177e4 614
1da177e4
LT		 615static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
616{
617 int len = strlen(str) + 1;
618 return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len);
619}
620
97c53cac
DL		 621extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo);
622extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid);
1ce85fe4
PNA		 623extern void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid,
624 u32 group, struct nlmsghdr *nlh, gfp_t flags);
97c53cac 625extern void rtnl_set_sk_err(struct net *net, u32 group, int error);
1da177e4 626extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
e3703b3d
TG		 627extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
628 u32 id, u32 ts, u32 tsage, long expires,
629 u32 error);
1da177e4
LT		 630
631extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data);
632
633#define RTA_PUT(skb, attrtype, attrlen, data) \
634({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
635 goto rtattr_failure; \
636 __rta_fill(skb, attrtype, attrlen, data); })
637
d675c989 638#define RTA_APPEND(skb, attrlen, data) \
1da177e4
LT		 639({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \
640 goto rtattr_failure; \
d675c989
TG		 641 memcpy(skb_put(skb, attrlen), data, attrlen); })
642
643#define RTA_PUT_NOHDR(skb, attrlen, data) \
b3563c4f 644({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \
27a884dc 645 memset(skb_tail_pointer(skb) - (RTA_ALIGN(attrlen) - attrlen), 0, \
b3563c4f 646 RTA_ALIGN(attrlen) - attrlen); })
00768244 647
8f48bcd4
TG		 648#define RTA_PUT_U8(skb, attrtype, value) \
649({ u8 _tmp = (value); \
650 RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); })
651
652#define RTA_PUT_U16(skb, attrtype, value) \
653({ u16 _tmp = (value); \
654 RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); })
655
00768244
TG		 656#define RTA_PUT_U32(skb, attrtype, value) \
657({ u32 _tmp = (value); \
658 RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); })
659
660#define RTA_PUT_U64(skb, attrtype, value) \
661({ u64 _tmp = (value); \
662 RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); })
663
664#define RTA_PUT_SECS(skb, attrtype, value) \
665 RTA_PUT_U64(skb, attrtype, (value) / HZ)
666
667#define RTA_PUT_MSECS(skb, attrtype, value) \
668 RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value))
669
670#define RTA_PUT_STRING(skb, attrtype, value) \
671 RTA_PUT(skb, attrtype, strlen(value) + 1, value)
672
8f48bcd4
TG		 673#define RTA_PUT_FLAG(skb, attrtype) \
674 RTA_PUT(skb, attrtype, 0, NULL);
675
00768244 676#define RTA_NEST(skb, type) \
27a884dc 677({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
00768244
TG		 678 RTA_PUT(skb, type, 0, NULL); \
679 __start; })
680
681#define RTA_NEST_END(skb, start) \
27a884dc 682({ (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
00768244
TG		 683 (skb)->len; })
684
afdc3238
PM		 685#define RTA_NEST_COMPAT(skb, type, attrlen, data) \
686({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
687 RTA_PUT(skb, type, attrlen, data); \
688 RTA_NEST(skb, type); \
689 __start; })
690
691#define RTA_NEST_COMPAT_END(skb, start) \
692({ struct rtattr *__nest = (void *)(start) + NLMSG_ALIGN((start)->rta_len); \
693 (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
694 RTA_NEST_END(skb, __nest); \
695 (skb)->len; })
696
00768244 697#define RTA_NEST_CANCEL(skb, start) \
c52a3f89
TG		 698({ if (start) \
699 skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
00768244
TG		 700 -1; })
701
8f48bcd4
TG		 702#define RTA_GET_U8(rta) \
703({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \
704 goto rtattr_failure; \
705 *(u8 *) RTA_DATA(rta); })
706
707#define RTA_GET_U16(rta) \
708({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \
709 goto rtattr_failure; \
710 *(u16 *) RTA_DATA(rta); })
711
00768244
TG		 712#define RTA_GET_U32(rta) \
713({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \
714 goto rtattr_failure; \
715 *(u32 *) RTA_DATA(rta); })
716
717#define RTA_GET_U64(rta) \
718({ u64 _tmp; \
719 if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \
720 goto rtattr_failure; \
721 memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \
722 _tmp; })
723
8f48bcd4
TG		 724#define RTA_GET_FLAG(rta) (!!(rta))
725
00768244
TG		 726#define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ)
727#define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta)))
1da177e4
LT		 728
729static inline struct rtattr *
730__rta_reserve(struct sk_buff *skb, int attrtype, int attrlen)
731{
732 struct rtattr *rta;
733 int size = RTA_LENGTH(attrlen);
734
735 rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
736 rta->rta_type = attrtype;
737 rta->rta_len = size;
b3563c4f 738 memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
1da177e4
LT		 739 return rta;
740}
741
742#define __RTA_PUT(skb, attrtype, attrlen) \
743({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
744 goto rtattr_failure; \
745 __rta_reserve(skb, attrtype, attrlen); })
746
747extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
748
6756ae4b 749/* RTNL is used as a global lock for all changes to network configuration */
1da177e4 750extern void rtnl_lock(void);
1da177e4 751extern void rtnl_unlock(void);
6756ae4b 752extern int rtnl_trylock(void);
c9c1014b 753extern int rtnl_is_locked(void);
a898def2
PM		 754#ifdef CONFIG_PROVE_LOCKING
755extern int lockdep_rtnl_is_held(void);
756#endif /* #ifdef CONFIG_PROVE_LOCKING */
6756ae4b 757
a6e0fc85
ED		 758/**
759 * rcu_dereference_rtnl - rcu_dereference with debug checking
760 * @p: The pointer to read, prior to dereferencing
761 *
762 * Do an rcu_dereference(p), but check caller either holds rcu_read_lock()
29fa060e 763 * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference()
a6e0fc85
ED		 764 */
765#define rcu_dereference_rtnl(p) \
d8bf4ca9 766 rcu_dereference_check(p, lockdep_rtnl_is_held())
a6e0fc85 767
7dff59ef 768/**
29fa060e 769 * rtnl_dereference - fetch RCU pointer when updates are prevented by RTNL
7dff59ef
ED		 770 * @p: The pointer to read, prior to dereferencing
771 *
29fa060e
DM		 772 * Return the value of the specified RCU-protected pointer, but omit
773 * both the smp_read_barrier_depends() and the ACCESS_ONCE(), because
774 * caller holds RTNL.
7dff59ef
ED		 775 */
776#define rtnl_dereference(p) \
29fa060e 777 rcu_dereference_protected(p, lockdep_rtnl_is_held())
7dff59ef 778
24824a09
ED		 779static inline struct netdev_queue *dev_ingress_queue(struct net_device *dev)
780{
781 return rtnl_dereference(dev->ingress_queue);
782}
783
784extern struct netdev_queue *dev_ingress_queue_create(struct net_device *dev);
785
1da177e4 786extern void rtnetlink_init(void);
6756ae4b 787extern void __rtnl_unlock(void);
1da177e4
LT		 788
789#define ASSERT_RTNL() do { \
c9c1014b 790 if (unlikely(!rtnl_is_locked())) { \
1da177e4
LT		 791 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
792 __FILE__, __LINE__); \
793 dump_stack(); \
794 } \
795} while(0)
796
9e762a4a
PM		 797static inline u32 rtm_get_table(struct rtattr **rta, u8 table)
798{
799 return RTA_GET_U32(rta[RTA_TABLE-1]);
800rtattr_failure:
801 return table;
802}
803
1da177e4
LT		 804#endif /* __KERNEL__ */
805
806
807#endif /* __LINUX_RTNETLINK_H */
Linux 6.x block layer and io_uring tree(s)