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ixgbe: this patch adds support for DCB to the kernel and ixgbe driver
[linux-2.6-block.git] / include / linux / rtnetlink.h
CommitLineData
1da177e4
LT		 1#ifndef __LINUX_RTNETLINK_H
2#define __LINUX_RTNETLINK_H
3
4#include <linux/netlink.h>
cbde1668 5#include <linux/if_link.h>
e07bca84
TG		 6#include <linux/if_addr.h>
7#include <linux/neighbour.h>
1da177e4
LT		 8
9/****
10 * Routing/neighbour discovery messages.
11 ****/
12
13/* Types of messages */
14
15enum {
16 RTM_BASE = 16,
17#define RTM_BASE RTM_BASE
18
19 RTM_NEWLINK = 16,
20#define RTM_NEWLINK RTM_NEWLINK
21 RTM_DELLINK,
22#define RTM_DELLINK RTM_DELLINK
23 RTM_GETLINK,
24#define RTM_GETLINK RTM_GETLINK
25 RTM_SETLINK,
26#define RTM_SETLINK RTM_SETLINK
27
28 RTM_NEWADDR = 20,
29#define RTM_NEWADDR RTM_NEWADDR
30 RTM_DELADDR,
31#define RTM_DELADDR RTM_DELADDR
32 RTM_GETADDR,
33#define RTM_GETADDR RTM_GETADDR
34
35 RTM_NEWROUTE = 24,
36#define RTM_NEWROUTE RTM_NEWROUTE
37 RTM_DELROUTE,
38#define RTM_DELROUTE RTM_DELROUTE
39 RTM_GETROUTE,
40#define RTM_GETROUTE RTM_GETROUTE
41
42 RTM_NEWNEIGH = 28,
43#define RTM_NEWNEIGH RTM_NEWNEIGH
44 RTM_DELNEIGH,
45#define RTM_DELNEIGH RTM_DELNEIGH
46 RTM_GETNEIGH,
47#define RTM_GETNEIGH RTM_GETNEIGH
48
49 RTM_NEWRULE = 32,
50#define RTM_NEWRULE RTM_NEWRULE
51 RTM_DELRULE,
52#define RTM_DELRULE RTM_DELRULE
53 RTM_GETRULE,
54#define RTM_GETRULE RTM_GETRULE
55
56 RTM_NEWQDISC = 36,
57#define RTM_NEWQDISC RTM_NEWQDISC
58 RTM_DELQDISC,
59#define RTM_DELQDISC RTM_DELQDISC
60 RTM_GETQDISC,
61#define RTM_GETQDISC RTM_GETQDISC
62
63 RTM_NEWTCLASS = 40,
64#define RTM_NEWTCLASS RTM_NEWTCLASS
65 RTM_DELTCLASS,
66#define RTM_DELTCLASS RTM_DELTCLASS
67 RTM_GETTCLASS,
68#define RTM_GETTCLASS RTM_GETTCLASS
69
70 RTM_NEWTFILTER = 44,
71#define RTM_NEWTFILTER RTM_NEWTFILTER
72 RTM_DELTFILTER,
73#define RTM_DELTFILTER RTM_DELTFILTER
74 RTM_GETTFILTER,
75#define RTM_GETTFILTER RTM_GETTFILTER
76
77 RTM_NEWACTION = 48,
78#define RTM_NEWACTION RTM_NEWACTION
79 RTM_DELACTION,
80#define RTM_DELACTION RTM_DELACTION
81 RTM_GETACTION,
82#define RTM_GETACTION RTM_GETACTION
83
84 RTM_NEWPREFIX = 52,
85#define RTM_NEWPREFIX RTM_NEWPREFIX
1da177e4
LT		 86
87 RTM_GETMULTICAST = 58,
88#define RTM_GETMULTICAST RTM_GETMULTICAST
89
90 RTM_GETANYCAST = 62,
91#define RTM_GETANYCAST RTM_GETANYCAST
92
c7fb64db
TG		 93 RTM_NEWNEIGHTBL = 64,
94#define RTM_NEWNEIGHTBL RTM_NEWNEIGHTBL
95 RTM_GETNEIGHTBL = 66,
96#define RTM_GETNEIGHTBL RTM_GETNEIGHTBL
97 RTM_SETNEIGHTBL,
98#define RTM_SETNEIGHTBL RTM_SETNEIGHTBL
99
31910575
PY		 100 RTM_NEWNDUSEROPT = 68,
101#define RTM_NEWNDUSEROPT RTM_NEWNDUSEROPT
102
2a8cc6c8
YH		 103 RTM_NEWADDRLABEL = 72,
104#define RTM_NEWADDRLABEL RTM_NEWADDRLABEL
105 RTM_DELADDRLABEL,
106#define RTM_NEWADDRLABEL RTM_NEWADDRLABEL
107 RTM_GETADDRLABEL,
108#define RTM_GETADDRLABEL RTM_GETADDRLABEL
109
2f90b865
AD		 110 RTM_GETDCB = 78,
111#define RTM_GETDCB RTM_GETDCB
112 RTM_SETDCB,
113#define RTM_SETDCB RTM_SETDCB
114
d775fc09
TG		 115 __RTM_MAX,
116#define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1)
1da177e4
LT		 117};
118
db46edc6
TG		 119#define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE)
120#define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2)
f90a0a74
TG		 121#define RTM_FAM(cmd) (((cmd) - RTM_BASE) >> 2)
122
1da177e4
LT		 123/*
124 Generic structure for encapsulation of optional route information.
125 It is reminiscent of sockaddr, but with sa_family replaced
126 with attribute type.
127 */
128
129struct rtattr
130{
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
156struct rtmsg
157{
158 unsigned char rtm_family;
159 unsigned char rtm_dst_len;
160 unsigned char rtm_src_len;
161 unsigned char rtm_tos;
162
163 unsigned char rtm_table; /* Routing table id */
164 unsigned char rtm_protocol; /* Routing protocol; see below */
165 unsigned char rtm_scope; /* See below */
166 unsigned char rtm_type; /* See below */
167
168 unsigned rtm_flags;
169};
170
171/* rtm_type */
172
173enum
174{
175 RTN_UNSPEC,
176 RTN_UNICAST, /* Gateway or direct route */
177 RTN_LOCAL, /* Accept locally */
178 RTN_BROADCAST, /* Accept locally as broadcast,
179 send as broadcast */
180 RTN_ANYCAST, /* Accept locally as broadcast,
181 but send as unicast */
182 RTN_MULTICAST, /* Multicast route */
183 RTN_BLACKHOLE, /* Drop */
184 RTN_UNREACHABLE, /* Destination is unreachable */
185 RTN_PROHIBIT, /* Administratively prohibited */
186 RTN_THROW, /* Not in this table */
187 RTN_NAT, /* Translate this address */
188 RTN_XRESOLVE, /* Use external resolver */
189 __RTN_MAX
190};
191
192#define RTN_MAX (__RTN_MAX - 1)
193
194
195/* rtm_protocol */
196
197#define RTPROT_UNSPEC 0
198#define RTPROT_REDIRECT 1 /* Route installed by ICMP redirects;
199 not used by current IPv4 */
200#define RTPROT_KERNEL 2 /* Route installed by kernel */
201#define RTPROT_BOOT 3 /* Route installed during boot */
202#define RTPROT_STATIC 4 /* Route installed by administrator */
203
204/* Values of protocol >= RTPROT_STATIC are not interpreted by kernel;
205 they are just passed from user and back as is.
206 It will be used by hypothetical multiple routing daemons.
207 Note that protocol values should be standardized in order to
208 avoid conflicts.
209 */
210
211#define RTPROT_GATED 8 /* Apparently, GateD */
212#define RTPROT_RA 9 /* RDISC/ND router advertisements */
213#define RTPROT_MRT 10 /* Merit MRT */
214#define RTPROT_ZEBRA 11 /* Zebra */
215#define RTPROT_BIRD 12 /* BIRD */
216#define RTPROT_DNROUTED 13 /* DECnet routing daemon */
217#define RTPROT_XORP 14 /* XORP */
99cae7fc 218#define RTPROT_NTK 15 /* Netsukuku */
1da177e4
LT		 219
220/* rtm_scope
221
222 Really it is not scope, but sort of distance to the destination.
223 NOWHERE are reserved for not existing destinations, HOST is our
224 local addresses, LINK are destinations, located on directly attached
225 link and UNIVERSE is everywhere in the Universe.
226
227 Intermediate values are also possible f.e. interior routes
228 could be assigned a value between UNIVERSE and LINK.
229*/
230
231enum rt_scope_t
232{
233 RT_SCOPE_UNIVERSE=0,
234/* User defined values */
235 RT_SCOPE_SITE=200,
236 RT_SCOPE_LINK=253,
237 RT_SCOPE_HOST=254,
238 RT_SCOPE_NOWHERE=255
239};
240
241/* rtm_flags */
242
243#define RTM_F_NOTIFY 0x100 /* Notify user of route change */
244#define RTM_F_CLONED 0x200 /* This route is cloned */
245#define RTM_F_EQUALIZE 0x400 /* Multipath equalizer: NI */
246#define RTM_F_PREFIX 0x800 /* Prefix addresses */
247
248/* Reserved table identifiers */
249
250enum rt_class_t
251{
252 RT_TABLE_UNSPEC=0,
253/* User defined values */
709772e6 254 RT_TABLE_COMPAT=252,
1da177e4
LT		 255 RT_TABLE_DEFAULT=253,
256 RT_TABLE_MAIN=254,
257 RT_TABLE_LOCAL=255,
b801f549 258 RT_TABLE_MAX=0xFFFFFFFF
1da177e4 259};
1da177e4
LT		 260
261
262/* Routing message attributes */
263
264enum rtattr_type_t
265{
266 RTA_UNSPEC,
267 RTA_DST,
268 RTA_SRC,
269 RTA_IIF,
270 RTA_OIF,
271 RTA_GATEWAY,
272 RTA_PRIORITY,
273 RTA_PREFSRC,
274 RTA_METRICS,
275 RTA_MULTIPATH,
1f9d11c7 276 RTA_PROTOINFO, /* no longer used */
1da177e4
LT		 277 RTA_FLOW,
278 RTA_CACHEINFO,
1f9d11c7 279 RTA_SESSION, /* no longer used */
e06e7c61 280 RTA_MP_ALGO, /* no longer used */
9e762a4a 281 RTA_TABLE,
1da177e4
LT		 282 __RTA_MAX
283};
284
285#define RTA_MAX (__RTA_MAX - 1)
286
287#define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg))))
288#define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg))
289
290/* RTM_MULTIPATH --- array of struct rtnexthop.
291 *
292 * "struct rtnexthop" describes all necessary nexthop information,
293 * i.e. parameters of path to a destination via this nexthop.
294 *
295 * At the moment it is impossible to set different prefsrc, mtu, window
296 * and rtt for different paths from multipath.
297 */
298
299struct rtnexthop
300{
301 unsigned short rtnh_len;
302 unsigned char rtnh_flags;
303 unsigned char rtnh_hops;
304 int rtnh_ifindex;
305};
306
307/* rtnh_flags */
308
309#define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */
310#define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */
311#define RTNH_F_ONLINK 4 /* Gateway is forced on link */
312
313/* Macros to handle hexthops */
314
315#define RTNH_ALIGNTO 4
316#define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) )
317#define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \
318 ((int)(rtnh)->rtnh_len) <= (len))
319#define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len)))
320#define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len))
321#define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len))
322#define RTNH_DATA(rtnh) ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0)))
323
324/* RTM_CACHEINFO */
325
326struct rta_cacheinfo
327{
328 __u32 rta_clntref;
329 __u32 rta_lastuse;
330 __s32 rta_expires;
331 __u32 rta_error;
332 __u32 rta_used;
333
334#define RTNETLINK_HAVE_PEERINFO 1
335 __u32 rta_id;
336 __u32 rta_ts;
337 __u32 rta_tsage;
338};
339
340/* RTM_METRICS --- array of struct rtattr with types of RTAX_* */
341
342enum
343{
344 RTAX_UNSPEC,
345#define RTAX_UNSPEC RTAX_UNSPEC
346 RTAX_LOCK,
347#define RTAX_LOCK RTAX_LOCK
348 RTAX_MTU,
349#define RTAX_MTU RTAX_MTU
350 RTAX_WINDOW,
351#define RTAX_WINDOW RTAX_WINDOW
352 RTAX_RTT,
353#define RTAX_RTT RTAX_RTT
354 RTAX_RTTVAR,
355#define RTAX_RTTVAR RTAX_RTTVAR
356 RTAX_SSTHRESH,
357#define RTAX_SSTHRESH RTAX_SSTHRESH
358 RTAX_CWND,
359#define RTAX_CWND RTAX_CWND
360 RTAX_ADVMSS,
361#define RTAX_ADVMSS RTAX_ADVMSS
362 RTAX_REORDERING,
363#define RTAX_REORDERING RTAX_REORDERING
364 RTAX_HOPLIMIT,
365#define RTAX_HOPLIMIT RTAX_HOPLIMIT
366 RTAX_INITCWND,
367#define RTAX_INITCWND RTAX_INITCWND
368 RTAX_FEATURES,
369#define RTAX_FEATURES RTAX_FEATURES
05bb1fad
DM		 370 RTAX_RTO_MIN,
371#define RTAX_RTO_MIN RTAX_RTO_MIN
1da177e4
LT		 372 __RTAX_MAX
373};
374
375#define RTAX_MAX (__RTAX_MAX - 1)
376
377#define RTAX_FEATURE_ECN 0x00000001
378#define RTAX_FEATURE_SACK 0x00000002
379#define RTAX_FEATURE_TIMESTAMP 0x00000004
380#define RTAX_FEATURE_ALLFRAG 0x00000008
381
382struct rta_session
383{
384 __u8 proto;
8a47077a
PM		 385 __u8 pad1;
386 __u16 pad2;
1da177e4
LT		 387
388 union {
389 struct {
390 __u16 sport;
391 __u16 dport;
392 } ports;
393
394 struct {
395 __u8 type;
396 __u8 code;
397 __u16 ident;
398 } icmpt;
399
400 __u32 spi;
401 } u;
402};
403
1da177e4
LT		 404/****
405 * General form of address family dependent message.
406 ****/
407
408struct rtgenmsg
409{
410 unsigned char rtgen_family;
411};
412
413/*****************************************************************
414 * Link layer specific messages.
415 ****/
416
417/* struct ifinfomsg
418 * passes link level specific information, not dependent
419 * on network protocol.
420 */
421
422struct ifinfomsg
423{
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
436struct prefixmsg
437{
438 unsigned char prefix_family;
8a47077a
PM		 439 unsigned char prefix_pad1;
440 unsigned short prefix_pad2;
1da177e4
LT		 441 int prefix_ifindex;
442 unsigned char prefix_type;
443 unsigned char prefix_len;
444 unsigned char prefix_flags;
8a47077a 445 unsigned char prefix_pad3;
1da177e4
LT		 446};
447
448enum
449{
450 PREFIX_UNSPEC,
451 PREFIX_ADDRESS,
452 PREFIX_CACHEINFO,
453 __PREFIX_MAX
454};
455
456#define PREFIX_MAX (__PREFIX_MAX - 1)
457
458struct prefix_cacheinfo
459{
460 __u32 preferred_time;
461 __u32 valid_time;
462};
463
1da177e4
LT		 464
465/*****************************************************************
466 * Traffic control messages.
467 ****/
468
469struct tcmsg
470{
471 unsigned char tcm_family;
472 unsigned char tcm__pad1;
473 unsigned short tcm__pad2;
474 int tcm_ifindex;
475 __u32 tcm_handle;
476 __u32 tcm_parent;
477 __u32 tcm_info;
478};
479
480enum
481{
482 TCA_UNSPEC,
483 TCA_KIND,
484 TCA_OPTIONS,
485 TCA_STATS,
486 TCA_XSTATS,
487 TCA_RATE,
488 TCA_FCNT,
489 TCA_STATS2,
175f9c1b 490 TCA_STAB,
1da177e4
LT		 491 __TCA_MAX
492};
493
494#define TCA_MAX (__TCA_MAX - 1)
495
496#define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg))))
497#define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg))
498
31910575
PY		 499/********************************************************************
500 * Neighbor Discovery userland options
501 ****/
502
503struct nduseroptmsg
504{
505 unsigned char nduseropt_family;
506 unsigned char nduseropt_pad1;
507 unsigned short nduseropt_opts_len; /* Total length of options */
dbb2ed24 508 int nduseropt_ifindex;
31910575
PY		 509 __u8 nduseropt_icmp_type;
510 __u8 nduseropt_icmp_code;
511 unsigned short nduseropt_pad2;
dbb2ed24 512 unsigned int nduseropt_pad3;
31910575
PY		 513 /* Followed by one or more ND options */
514};
515
516enum
517{
518 NDUSEROPT_UNSPEC,
519 NDUSEROPT_SRCADDR,
520 __NDUSEROPT_MAX
521};
522
523#define NDUSEROPT_MAX (__NDUSEROPT_MAX - 1)
524
ac6d439d
PM		 525#ifndef __KERNEL__
526/* RTnetlink multicast groups - backwards compatibility for userspace */
1da177e4
LT		 527#define RTMGRP_LINK 1
528#define RTMGRP_NOTIFY 2
529#define RTMGRP_NEIGH 4
530#define RTMGRP_TC 8
531
532#define RTMGRP_IPV4_IFADDR 0x10
533#define RTMGRP_IPV4_MROUTE 0x20
534#define RTMGRP_IPV4_ROUTE 0x40
a5cdc030 535#define RTMGRP_IPV4_RULE 0x80
1da177e4
LT		 536
537#define RTMGRP_IPV6_IFADDR 0x100
538#define RTMGRP_IPV6_MROUTE 0x200
539#define RTMGRP_IPV6_ROUTE 0x400
540#define RTMGRP_IPV6_IFINFO 0x800
541
542#define RTMGRP_DECnet_IFADDR 0x1000
543#define RTMGRP_DECnet_ROUTE 0x4000
544
545#define RTMGRP_IPV6_PREFIX 0x20000
ac6d439d
PM		 546#endif
547
548/* RTnetlink multicast groups */
549enum rtnetlink_groups {
550 RTNLGRP_NONE,
551#define RTNLGRP_NONE RTNLGRP_NONE
552 RTNLGRP_LINK,
553#define RTNLGRP_LINK RTNLGRP_LINK
554 RTNLGRP_NOTIFY,
555#define RTNLGRP_NOTIFY RTNLGRP_NOTIFY
556 RTNLGRP_NEIGH,
557#define RTNLGRP_NEIGH RTNLGRP_NEIGH
558 RTNLGRP_TC,
559#define RTNLGRP_TC RTNLGRP_TC
560 RTNLGRP_IPV4_IFADDR,
561#define RTNLGRP_IPV4_IFADDR RTNLGRP_IPV4_IFADDR
562 RTNLGRP_IPV4_MROUTE,
563#define RTNLGRP_IPV4_MROUTE RTNLGRP_IPV4_MROUTE
564 RTNLGRP_IPV4_ROUTE,
565#define RTNLGRP_IPV4_ROUTE RTNLGRP_IPV4_ROUTE
a5cdc030
PM		 566 RTNLGRP_IPV4_RULE,
567#define RTNLGRP_IPV4_RULE RTNLGRP_IPV4_RULE
ac6d439d
PM		 568 RTNLGRP_IPV6_IFADDR,
569#define RTNLGRP_IPV6_IFADDR RTNLGRP_IPV6_IFADDR
570 RTNLGRP_IPV6_MROUTE,
571#define RTNLGRP_IPV6_MROUTE RTNLGRP_IPV6_MROUTE
572 RTNLGRP_IPV6_ROUTE,
573#define RTNLGRP_IPV6_ROUTE RTNLGRP_IPV6_ROUTE
574 RTNLGRP_IPV6_IFINFO,
575#define RTNLGRP_IPV6_IFINFO RTNLGRP_IPV6_IFINFO
576 RTNLGRP_DECnet_IFADDR,
577#define RTNLGRP_DECnet_IFADDR RTNLGRP_DECnet_IFADDR
6b80ebed 578 RTNLGRP_NOP2,
ac6d439d
PM		 579 RTNLGRP_DECnet_ROUTE,
580#define RTNLGRP_DECnet_ROUTE RTNLGRP_DECnet_ROUTE
a8731cbf
SW		 581 RTNLGRP_DECnet_RULE,
582#define RTNLGRP_DECnet_RULE RTNLGRP_DECnet_RULE
6b80ebed 583 RTNLGRP_NOP4,
ac6d439d
PM		 584 RTNLGRP_IPV6_PREFIX,
585#define RTNLGRP_IPV6_PREFIX RTNLGRP_IPV6_PREFIX
101367c2
TG		 586 RTNLGRP_IPV6_RULE,
587#define RTNLGRP_IPV6_RULE RTNLGRP_IPV6_RULE
31910575
PY		 588 RTNLGRP_ND_USEROPT,
589#define RTNLGRP_ND_USEROPT RTNLGRP_ND_USEROPT
bce7b154
RDC		 590 RTNLGRP_PHONET_IFADDR,
591#define RTNLGRP_PHONET_IFADDR RTNLGRP_PHONET_IFADDR
592 RTNLGRP_PHONET_ROUTE,
593#define RTNLGRP_PHONET_ROUTE RTNLGRP_PHONET_ROUTE
ac6d439d
PM		 594 __RTNLGRP_MAX
595};
596#define RTNLGRP_MAX (__RTNLGRP_MAX - 1)
1da177e4
LT		 597
598/* TC action piece */
599struct tcamsg
600{
601 unsigned char tca_family;
602 unsigned char tca__pad1;
603 unsigned short tca__pad2;
604};
605#define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg))))
606#define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg))
607#define TCA_ACT_TAB 1 /* attr type must be >=1 */
608#define TCAA_MAX 1
609
610/* End of information exported to user level */
611
612#ifdef __KERNEL__
613
6756ae4b 614#include <linux/mutex.h>
1da177e4 615
1da177e4
LT		 616static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
617{
618 int len = strlen(str) + 1;
619 return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len);
620}
621
97c53cac
DL		 622extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo);
623extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid);
624extern int rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group,
97676b6b 625 struct nlmsghdr *nlh, gfp_t flags);
97c53cac 626extern void rtnl_set_sk_err(struct net *net, u32 group, int error);
1da177e4 627extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
e3703b3d
TG		 628extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
629 u32 id, u32 ts, u32 tsage, long expires,
630 u32 error);
1da177e4
LT		 631
632extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data);
633
634#define RTA_PUT(skb, attrtype, attrlen, data) \
635({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
636 goto rtattr_failure; \
637 __rta_fill(skb, attrtype, attrlen, data); })
638
d675c989 639#define RTA_APPEND(skb, attrlen, data) \
1da177e4
LT		 640({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \
641 goto rtattr_failure; \
d675c989
TG		 642 memcpy(skb_put(skb, attrlen), data, attrlen); })
643
644#define RTA_PUT_NOHDR(skb, attrlen, data) \
b3563c4f 645({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \
27a884dc 646 memset(skb_tail_pointer(skb) - (RTA_ALIGN(attrlen) - attrlen), 0, \
b3563c4f 647 RTA_ALIGN(attrlen) - attrlen); })
00768244 648
8f48bcd4
TG		 649#define RTA_PUT_U8(skb, attrtype, value) \
650({ u8 _tmp = (value); \
651 RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); })
652
653#define RTA_PUT_U16(skb, attrtype, value) \
654({ u16 _tmp = (value); \
655 RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); })
656
00768244
TG		 657#define RTA_PUT_U32(skb, attrtype, value) \
658({ u32 _tmp = (value); \
659 RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); })
660
661#define RTA_PUT_U64(skb, attrtype, value) \
662({ u64 _tmp = (value); \
663 RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); })
664
665#define RTA_PUT_SECS(skb, attrtype, value) \
666 RTA_PUT_U64(skb, attrtype, (value) / HZ)
667
668#define RTA_PUT_MSECS(skb, attrtype, value) \
669 RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value))
670
671#define RTA_PUT_STRING(skb, attrtype, value) \
672 RTA_PUT(skb, attrtype, strlen(value) + 1, value)
673
8f48bcd4
TG		 674#define RTA_PUT_FLAG(skb, attrtype) \
675 RTA_PUT(skb, attrtype, 0, NULL);
676
00768244 677#define RTA_NEST(skb, type) \
27a884dc 678({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
00768244
TG		 679 RTA_PUT(skb, type, 0, NULL); \
680 __start; })
681
682#define RTA_NEST_END(skb, start) \
27a884dc 683({ (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
00768244
TG		 684 (skb)->len; })
685
afdc3238
PM		 686#define RTA_NEST_COMPAT(skb, type, attrlen, data) \
687({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
688 RTA_PUT(skb, type, attrlen, data); \
689 RTA_NEST(skb, type); \
690 __start; })
691
692#define RTA_NEST_COMPAT_END(skb, start) \
693({ struct rtattr *__nest = (void *)(start) + NLMSG_ALIGN((start)->rta_len); \
694 (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
695 RTA_NEST_END(skb, __nest); \
696 (skb)->len; })
697
00768244 698#define RTA_NEST_CANCEL(skb, start) \
c52a3f89
TG		 699({ if (start) \
700 skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
00768244
TG		 701 -1; })
702
8f48bcd4
TG		 703#define RTA_GET_U8(rta) \
704({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \
705 goto rtattr_failure; \
706 *(u8 *) RTA_DATA(rta); })
707
708#define RTA_GET_U16(rta) \
709({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \
710 goto rtattr_failure; \
711 *(u16 *) RTA_DATA(rta); })
712
00768244
TG		 713#define RTA_GET_U32(rta) \
714({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \
715 goto rtattr_failure; \
716 *(u32 *) RTA_DATA(rta); })
717
718#define RTA_GET_U64(rta) \
719({ u64 _tmp; \
720 if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \
721 goto rtattr_failure; \
722 memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \
723 _tmp; })
724
8f48bcd4
TG		 725#define RTA_GET_FLAG(rta) (!!(rta))
726
00768244
TG		 727#define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ)
728#define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta)))
1da177e4
LT		 729
730static inline struct rtattr *
731__rta_reserve(struct sk_buff *skb, int attrtype, int attrlen)
732{
733 struct rtattr *rta;
734 int size = RTA_LENGTH(attrlen);
735
736 rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
737 rta->rta_type = attrtype;
738 rta->rta_len = size;
b3563c4f 739 memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
1da177e4
LT		 740 return rta;
741}
742
743#define __RTA_PUT(skb, attrtype, attrlen) \
744({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
745 goto rtattr_failure; \
746 __rta_reserve(skb, attrtype, attrlen); })
747
748extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
749
6756ae4b 750/* RTNL is used as a global lock for all changes to network configuration */
1da177e4 751extern void rtnl_lock(void);
1da177e4 752extern void rtnl_unlock(void);
6756ae4b 753extern int rtnl_trylock(void);
c9c1014b 754extern int rtnl_is_locked(void);
6756ae4b 755
1da177e4 756extern void rtnetlink_init(void);
6756ae4b 757extern void __rtnl_unlock(void);
1da177e4
LT		 758
759#define ASSERT_RTNL() do { \
c9c1014b 760 if (unlikely(!rtnl_is_locked())) { \
1da177e4
LT		 761 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
762 __FILE__, __LINE__); \
763 dump_stack(); \
764 } \
765} while(0)
766
9e762a4a
PM		 767static inline u32 rtm_get_table(struct rtattr **rta, u8 table)
768{
769 return RTA_GET_U32(rta[RTA_TABLE-1]);
770rtattr_failure:
771 return table;
772}
773
1da177e4
LT		 774#endif /* __KERNEL__ */
775
776
777#endif /* __LINUX_RTNETLINK_H */
Linux 6.x block layer and io_uring tree(s)