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TOMOYO Linux Cross Reference
Linux/include/linux/rtnetlink.h

Version: ~ [ linux-5.5-rc7 ] ~ [ linux-5.4.13 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.97 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.166 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.210 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.210 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.81 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
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  1 #ifndef __LINUX_RTNETLINK_H
  2 #define __LINUX_RTNETLINK_H
  3 
  4 #include <linux/types.h>
  5 #include <linux/netlink.h>
  6 #include <linux/if_link.h>
  7 #include <linux/if_addr.h>
  8 #include <linux/neighbour.h>
  9 
 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
 14 #define RTNL_FAMILY_IP6MR               129
 15 #define RTNL_FAMILY_MAX                 129
 16 
 17 /****
 18  *              Routing/neighbour discovery messages.
 19  ****/
 20 
 21 /* Types of messages */
 22 
 23 enum {
 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
 94 
 95         RTM_GETMULTICAST = 58,
 96 #define RTM_GETMULTICAST RTM_GETMULTICAST
 97 
 98         RTM_GETANYCAST  = 62,
 99 #define RTM_GETANYCAST  RTM_GETANYCAST
100 
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 
108         RTM_NEWNDUSEROPT = 68,
109 #define RTM_NEWNDUSEROPT RTM_NEWNDUSEROPT
110 
111         RTM_NEWADDRLABEL = 72,
112 #define RTM_NEWADDRLABEL RTM_NEWADDRLABEL
113         RTM_DELADDRLABEL,
114 #define RTM_DELADDRLABEL RTM_DELADDRLABEL
115         RTM_GETADDRLABEL,
116 #define RTM_GETADDRLABEL RTM_GETADDRLABEL
117 
118         RTM_GETDCB = 78,
119 #define RTM_GETDCB RTM_GETDCB
120         RTM_SETDCB,
121 #define RTM_SETDCB RTM_SETDCB
122 
123         __RTM_MAX,
124 #define RTM_MAX         (((__RTM_MAX + 3) & ~3) - 1)
125 };
126 
127 #define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE)
128 #define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2)
129 #define RTM_FAM(cmd)    (((cmd) - RTM_BASE) >> 2)
130 
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 
137 struct rtattr {
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 
163 struct rtmsg {
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 
179 enum {
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 */
223 #define RTPROT_NTK      15      /* Netsukuku */
224 #define RTPROT_DHCP     16      /* DHCP client */
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 
237 enum rt_scope_t {
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 
255 enum rt_class_t {
256         RT_TABLE_UNSPEC=0,
257 /* User defined values */
258         RT_TABLE_COMPAT=252,
259         RT_TABLE_DEFAULT=253,
260         RT_TABLE_MAIN=254,
261         RT_TABLE_LOCAL=255,
262         RT_TABLE_MAX=0xFFFFFFFF
263 };
264 
265 
266 /* Routing message attributes */
267 
268 enum rtattr_type_t {
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,
279         RTA_PROTOINFO, /* no longer used */
280         RTA_FLOW,
281         RTA_CACHEINFO,
282         RTA_SESSION, /* no longer used */
283         RTA_MP_ALGO, /* no longer used */
284         RTA_TABLE,
285         RTA_MARK,
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 
303 struct rtnexthop {
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 
329 struct rta_cacheinfo {
330         __u32   rta_clntref;
331         __u32   rta_lastuse;
332         __s32   rta_expires;
333         __u32   rta_error;
334         __u32   rta_used;
335 
336 #define RTNETLINK_HAVE_PEERINFO 1
337         __u32   rta_id;
338         __u32   rta_ts;
339         __u32   rta_tsage;
340 };
341 
342 /* RTM_METRICS --- array of struct rtattr with types of RTAX_* */
343 
344 enum {
345         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
371         RTAX_RTO_MIN,
372 #define RTAX_RTO_MIN RTAX_RTO_MIN
373         RTAX_INITRWND,
374 #define RTAX_INITRWND RTAX_INITRWND
375         __RTAX_MAX
376 };
377 
378 #define RTAX_MAX (__RTAX_MAX - 1)
379 
380 #define RTAX_FEATURE_ECN        0x00000001
381 #define RTAX_FEATURE_SACK       0x00000002
382 #define RTAX_FEATURE_TIMESTAMP  0x00000004
383 #define RTAX_FEATURE_ALLFRAG    0x00000008
384 
385 struct rta_session {
386         __u8    proto;
387         __u8    pad1;
388         __u16   pad2;
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 
406 /****
407  *              General form of address family dependent message.
408  ****/
409 
410 struct rtgenmsg {
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 
423 struct ifinfomsg {
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 
436 struct prefixmsg {
437         unsigned char   prefix_family;
438         unsigned char   prefix_pad1;
439         unsigned short  prefix_pad2;
440         int             prefix_ifindex;
441         unsigned char   prefix_type;
442         unsigned char   prefix_len;
443         unsigned char   prefix_flags;
444         unsigned char   prefix_pad3;
445 };
446 
447 enum 
448 {
449         PREFIX_UNSPEC,
450         PREFIX_ADDRESS,
451         PREFIX_CACHEINFO,
452         __PREFIX_MAX
453 };
454 
455 #define PREFIX_MAX      (__PREFIX_MAX - 1)
456 
457 struct prefix_cacheinfo {
458         __u32   preferred_time;
459         __u32   valid_time;
460 };
461 
462 
463 /*****************************************************************
464  *              Traffic control messages.
465  ****/
466 
467 struct tcmsg {
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 
477 enum {
478         TCA_UNSPEC,
479         TCA_KIND,
480         TCA_OPTIONS,
481         TCA_STATS,
482         TCA_XSTATS,
483         TCA_RATE,
484         TCA_FCNT,
485         TCA_STATS2,
486         TCA_STAB,
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 
495 /********************************************************************
496  *              Neighbor Discovery userland options
497  ****/
498 
499 struct nduseroptmsg {
500         unsigned char   nduseropt_family;
501         unsigned char   nduseropt_pad1;
502         unsigned short  nduseropt_opts_len;     /* Total length of options */
503         int             nduseropt_ifindex;
504         __u8            nduseropt_icmp_type;
505         __u8            nduseropt_icmp_code;
506         unsigned short  nduseropt_pad2;
507         unsigned int    nduseropt_pad3;
508         /* Followed by one or more ND options */
509 };
510 
511 enum {
512         NDUSEROPT_UNSPEC,
513         NDUSEROPT_SRCADDR,
514         __NDUSEROPT_MAX
515 };
516 
517 #define NDUSEROPT_MAX   (__NDUSEROPT_MAX - 1)
518 
519 #ifndef __KERNEL__
520 /* RTnetlink multicast groups - backwards compatibility for userspace */
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
529 #define RTMGRP_IPV4_RULE        0x80
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
540 #endif
541 
542 /* RTnetlink multicast groups */
543 enum 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
560         RTNLGRP_IPV4_RULE,
561 #define RTNLGRP_IPV4_RULE       RTNLGRP_IPV4_RULE
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
572         RTNLGRP_NOP2,
573         RTNLGRP_DECnet_ROUTE,
574 #define RTNLGRP_DECnet_ROUTE    RTNLGRP_DECnet_ROUTE
575         RTNLGRP_DECnet_RULE,
576 #define RTNLGRP_DECnet_RULE     RTNLGRP_DECnet_RULE
577         RTNLGRP_NOP4,
578         RTNLGRP_IPV6_PREFIX,
579 #define RTNLGRP_IPV6_PREFIX     RTNLGRP_IPV6_PREFIX
580         RTNLGRP_IPV6_RULE,
581 #define RTNLGRP_IPV6_RULE       RTNLGRP_IPV6_RULE
582         RTNLGRP_ND_USEROPT,
583 #define RTNLGRP_ND_USEROPT      RTNLGRP_ND_USEROPT
584         RTNLGRP_PHONET_IFADDR,
585 #define RTNLGRP_PHONET_IFADDR   RTNLGRP_PHONET_IFADDR
586         RTNLGRP_PHONET_ROUTE,
587 #define RTNLGRP_PHONET_ROUTE    RTNLGRP_PHONET_ROUTE
588         RTNLGRP_DCB,
589 #define RTNLGRP_DCB             RTNLGRP_DCB
590         __RTNLGRP_MAX
591 };
592 #define RTNLGRP_MAX     (__RTNLGRP_MAX - 1)
593 
594 /* TC action piece */
595 struct tcamsg {
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 
605 /* New extended info filters for IFLA_EXT_MASK */
606 #define RTEXT_FILTER_VF         (1 << 0)
607 
608 /* End of information exported to user level */
609 
610 #ifdef __KERNEL__
611 
612 #include <linux/mutex.h>
613 #include <linux/netdevice.h>
614 
615 static __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 
621 extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo);
622 extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid);
623 extern void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid,
624                         u32 group, struct nlmsghdr *nlh, gfp_t flags);
625 extern void rtnl_set_sk_err(struct net *net, u32 group, int error);
626 extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
627 extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
628                               u32 id, u32 ts, u32 tsage, long expires,
629                               u32 error);
630 
631 extern 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 
638 #define RTA_APPEND(skb, attrlen, data) \
639 ({      if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \
640                 goto rtattr_failure; \
641         memcpy(skb_put(skb, attrlen), data, attrlen); })
642 
643 #define RTA_PUT_NOHDR(skb, attrlen, data) \
644 ({      RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \
645         memset(skb_tail_pointer(skb) - (RTA_ALIGN(attrlen) - attrlen), 0, \
646                RTA_ALIGN(attrlen) - attrlen); })
647 
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 
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 
673 #define RTA_PUT_FLAG(skb, attrtype) \
674         RTA_PUT(skb, attrtype, 0, NULL);
675 
676 #define RTA_NEST(skb, type) \
677 ({      struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
678         RTA_PUT(skb, type, 0, NULL); \
679         __start;  })
680 
681 #define RTA_NEST_END(skb, start) \
682 ({      (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
683         (skb)->len; })
684 
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 
697 #define RTA_NEST_CANCEL(skb, start) \
698 ({      if (start) \
699                 skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
700         -1; })
701 
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 
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 
724 #define RTA_GET_FLAG(rta) (!!(rta))
725 
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)))
728                 
729 static 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;
738         memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
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 
747 extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
748 
749 /* RTNL is used as a global lock for all changes to network configuration  */
750 extern void rtnl_lock(void);
751 extern void rtnl_unlock(void);
752 extern int rtnl_trylock(void);
753 extern int rtnl_is_locked(void);
754 #ifdef CONFIG_PROVE_LOCKING
755 extern int lockdep_rtnl_is_held(void);
756 #endif /* #ifdef CONFIG_PROVE_LOCKING */
757 
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()
763  * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference()
764  */
765 #define rcu_dereference_rtnl(p)                                 \
766         rcu_dereference_check(p, lockdep_rtnl_is_held())
767 
768 /**
769  * rtnl_dereference - fetch RCU pointer when updates are prevented by RTNL
770  * @p: The pointer to read, prior to dereferencing
771  *
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.
775  */
776 #define rtnl_dereference(p)                                     \
777         rcu_dereference_protected(p, lockdep_rtnl_is_held())
778 
779 static inline struct netdev_queue *dev_ingress_queue(struct net_device *dev)
780 {
781         return rtnl_dereference(dev->ingress_queue);
782 }
783 
784 extern struct netdev_queue *dev_ingress_queue_create(struct net_device *dev);
785 
786 extern void rtnetlink_init(void);
787 extern void __rtnl_unlock(void);
788 
789 #define ASSERT_RTNL() do { \
790         if (unlikely(!rtnl_is_locked())) { \
791                 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
792                        __FILE__,  __LINE__); \
793                 dump_stack(); \
794         } \
795 } while(0)
796 
797 static inline u32 rtm_get_table(struct rtattr **rta, u8 table)
798 {
799         return RTA_GET_U32(rta[RTA_TABLE-1]);
800 rtattr_failure:
801         return table;
802 }
803 
804 #endif /* __KERNEL__ */
805 
806 
807 #endif  /* __LINUX_RTNETLINK_H */
808 

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