1 #ifndef __LINUX_RTNETLINK_H
2 #define __LINUX_RTNETLINK_H
4 #include <linux/netlink.h>
8 * Routing/neighbour discovery messages.
11 /* Types of messages */
15 #define RTM_BASE RTM_BASE
18 #define RTM_NEWLINK RTM_NEWLINK
20 #define RTM_DELLINK RTM_DELLINK
22 #define RTM_GETLINK RTM_GETLINK
24 #define RTM_SETLINK RTM_SETLINK
27 #define RTM_NEWADDR RTM_NEWADDR
29 #define RTM_DELADDR RTM_DELADDR
31 #define RTM_GETADDR RTM_GETADDR
34 #define RTM_NEWROUTE RTM_NEWROUTE
36 #define RTM_DELROUTE RTM_DELROUTE
38 #define RTM_GETROUTE RTM_GETROUTE
41 #define RTM_NEWNEIGH RTM_NEWNEIGH
43 #define RTM_DELNEIGH RTM_DELNEIGH
45 #define RTM_GETNEIGH RTM_GETNEIGH
48 #define RTM_NEWRULE RTM_NEWRULE
50 #define RTM_DELRULE RTM_DELRULE
52 #define RTM_GETRULE RTM_GETRULE
55 #define RTM_NEWQDISC RTM_NEWQDISC
57 #define RTM_DELQDISC RTM_DELQDISC
59 #define RTM_GETQDISC RTM_GETQDISC
62 #define RTM_NEWTCLASS RTM_NEWTCLASS
64 #define RTM_DELTCLASS RTM_DELTCLASS
66 #define RTM_GETTCLASS RTM_GETTCLASS
69 #define RTM_NEWTFILTER RTM_NEWTFILTER
71 #define RTM_DELTFILTER RTM_DELTFILTER
73 #define RTM_GETTFILTER RTM_GETTFILTER
76 #define RTM_NEWACTION RTM_NEWACTION
78 #define RTM_DELACTION RTM_DELACTION
80 #define RTM_GETACTION RTM_GETACTION
83 #define RTM_NEWPREFIX RTM_NEWPREFIX
85 #define RTM_GETPREFIX RTM_GETPREFIX
87 RTM_GETMULTICAST = 58,
88 #define RTM_GETMULTICAST RTM_GETMULTICAST
91 #define RTM_GETANYCAST RTM_GETANYCAST
94 #define RTM_NEWNEIGHTBL RTM_NEWNEIGHTBL
96 #define RTM_GETNEIGHTBL RTM_GETNEIGHTBL
98 #define RTM_SETNEIGHTBL RTM_SETNEIGHTBL
101 #define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1)
104 #define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE)
105 #define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2)
106 #define RTM_FAM(cmd) (((cmd) - RTM_BASE) >> 2)
109 Generic structure for encapsulation of optional route information.
110 It is reminiscent of sockaddr, but with sa_family replaced
116 unsigned short rta_len;
117 unsigned short rta_type;
120 /* Macros to handle rtattributes */
122 #define RTA_ALIGNTO 4
123 #define RTA_ALIGN(len) ( ((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1) )
124 #define RTA_OK(rta,len) ((len) >= (int)sizeof(struct rtattr) && \
125 (rta)->rta_len >= sizeof(struct rtattr) && \
126 (rta)->rta_len <= (len))
127 #define RTA_NEXT(rta,attrlen) ((attrlen) -= RTA_ALIGN((rta)->rta_len), \
128 (struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len)))
129 #define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len))
130 #define RTA_SPACE(len) RTA_ALIGN(RTA_LENGTH(len))
131 #define RTA_DATA(rta) ((void*)(((char*)(rta)) + RTA_LENGTH(0)))
132 #define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0))
137 /******************************************************************************
138 * Definitions used in routing table administration.
143 unsigned char rtm_family;
144 unsigned char rtm_dst_len;
145 unsigned char rtm_src_len;
146 unsigned char rtm_tos;
148 unsigned char rtm_table; /* Routing table id */
149 unsigned char rtm_protocol; /* Routing protocol; see below */
150 unsigned char rtm_scope; /* See below */
151 unsigned char rtm_type; /* See below */
161 RTN_UNICAST, /* Gateway or direct route */
162 RTN_LOCAL, /* Accept locally */
163 RTN_BROADCAST, /* Accept locally as broadcast,
165 RTN_ANYCAST, /* Accept locally as broadcast,
166 but send as unicast */
167 RTN_MULTICAST, /* Multicast route */
168 RTN_BLACKHOLE, /* Drop */
169 RTN_UNREACHABLE, /* Destination is unreachable */
170 RTN_PROHIBIT, /* Administratively prohibited */
171 RTN_THROW, /* Not in this table */
172 RTN_NAT, /* Translate this address */
173 RTN_XRESOLVE, /* Use external resolver */
177 #define RTN_MAX (__RTN_MAX - 1)
182 #define RTPROT_UNSPEC 0
183 #define RTPROT_REDIRECT 1 /* Route installed by ICMP redirects;
184 not used by current IPv4 */
185 #define RTPROT_KERNEL 2 /* Route installed by kernel */
186 #define RTPROT_BOOT 3 /* Route installed during boot */
187 #define RTPROT_STATIC 4 /* Route installed by administrator */
189 /* Values of protocol >= RTPROT_STATIC are not interpreted by kernel;
190 they are just passed from user and back as is.
191 It will be used by hypothetical multiple routing daemons.
192 Note that protocol values should be standardized in order to
196 #define RTPROT_GATED 8 /* Apparently, GateD */
197 #define RTPROT_RA 9 /* RDISC/ND router advertisements */
198 #define RTPROT_MRT 10 /* Merit MRT */
199 #define RTPROT_ZEBRA 11 /* Zebra */
200 #define RTPROT_BIRD 12 /* BIRD */
201 #define RTPROT_DNROUTED 13 /* DECnet routing daemon */
202 #define RTPROT_XORP 14 /* XORP */
203 #define RTPROT_NTK 15 /* Netsukuku */
207 Really it is not scope, but sort of distance to the destination.
208 NOWHERE are reserved for not existing destinations, HOST is our
209 local addresses, LINK are destinations, located on directly attached
210 link and UNIVERSE is everywhere in the Universe.
212 Intermediate values are also possible f.e. interior routes
213 could be assigned a value between UNIVERSE and LINK.
219 /* User defined values */
228 #define RTM_F_NOTIFY 0x100 /* Notify user of route change */
229 #define RTM_F_CLONED 0x200 /* This route is cloned */
230 #define RTM_F_EQUALIZE 0x400 /* Multipath equalizer: NI */
231 #define RTM_F_PREFIX 0x800 /* Prefix addresses */
233 /* Reserved table identifiers */
238 /* User defined values */
239 RT_TABLE_DEFAULT=253,
244 #define RT_TABLE_MAX (__RT_TABLE_MAX - 1)
248 /* Routing message attributes */
270 #define RTA_MAX (__RTA_MAX - 1)
272 #define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg))))
273 #define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg))
275 /* RTM_MULTIPATH --- array of struct rtnexthop.
277 * "struct rtnexthop" describes all necessary nexthop information,
278 * i.e. parameters of path to a destination via this nexthop.
280 * At the moment it is impossible to set different prefsrc, mtu, window
281 * and rtt for different paths from multipath.
286 unsigned short rtnh_len;
287 unsigned char rtnh_flags;
288 unsigned char rtnh_hops;
294 #define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */
295 #define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */
296 #define RTNH_F_ONLINK 4 /* Gateway is forced on link */
298 /* Macros to handle hexthops */
300 #define RTNH_ALIGNTO 4
301 #define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) )
302 #define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \
303 ((int)(rtnh)->rtnh_len) <= (len))
304 #define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len)))
305 #define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len))
306 #define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len))
307 #define RTNH_DATA(rtnh) ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0)))
319 #define RTNETLINK_HAVE_PEERINFO 1
325 /* RTM_METRICS --- array of struct rtattr with types of RTAX_* */
330 #define RTAX_UNSPEC RTAX_UNSPEC
332 #define RTAX_LOCK RTAX_LOCK
334 #define RTAX_MTU RTAX_MTU
336 #define RTAX_WINDOW RTAX_WINDOW
338 #define RTAX_RTT RTAX_RTT
340 #define RTAX_RTTVAR RTAX_RTTVAR
342 #define RTAX_SSTHRESH RTAX_SSTHRESH
344 #define RTAX_CWND RTAX_CWND
346 #define RTAX_ADVMSS RTAX_ADVMSS
348 #define RTAX_REORDERING RTAX_REORDERING
350 #define RTAX_HOPLIMIT RTAX_HOPLIMIT
352 #define RTAX_INITCWND RTAX_INITCWND
354 #define RTAX_FEATURES RTAX_FEATURES
358 #define RTAX_MAX (__RTAX_MAX - 1)
360 #define RTAX_FEATURE_ECN 0x00000001
361 #define RTAX_FEATURE_SACK 0x00000002
362 #define RTAX_FEATURE_TIMESTAMP 0x00000004
363 #define RTAX_FEATURE_ALLFRAG 0x00000008
389 /**************************************************************
390 * Neighbour discovery.
395 unsigned char ndm_family;
396 unsigned char ndm_pad1;
397 unsigned short ndm_pad2;
398 int ndm_ifindex; /* Link index */
414 #define NDA_MAX (__NDA_MAX - 1)
416 #define NDA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg))))
417 #define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg))
420 * Neighbor Cache Entry Flags
423 #define NTF_PROXY 0x08 /* == ATF_PUBL */
424 #define NTF_ROUTER 0x80
427 * Neighbor Cache Entry States.
430 #define NUD_INCOMPLETE 0x01
431 #define NUD_REACHABLE 0x02
432 #define NUD_STALE 0x04
433 #define NUD_DELAY 0x08
434 #define NUD_PROBE 0x10
435 #define NUD_FAILED 0x20
438 #define NUD_NOARP 0x40
439 #define NUD_PERMANENT 0x80
440 #define NUD_NONE 0x00
452 /*****************************************************************
453 * Neighbour tables specific messages.
455 * To retrieve the neighbour tables send RTM_GETNEIGHTBL with the
456 * NLM_F_DUMP flag set. Every neighbour table configuration is
457 * spread over multiple messages to avoid running into message
458 * size limits on systems with many interfaces. The first message
459 * in the sequence transports all not device specific data such as
460 * statistics, configuration, and the default parameter set.
461 * This message is followed by 0..n messages carrying device
462 * specific parameter sets.
463 * Although the ordering should be sufficient, NDTA_NAME can be
464 * used to identify sequences. The initial message can be identified
465 * by checking for NDTA_CONFIG. The device specific messages do
466 * not contain this TLV but have NDTPA_IFINDEX set to the
467 * corresponding interface index.
469 * To change neighbour table attributes, send RTM_SETNEIGHTBL
470 * with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3],
471 * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked
472 * otherwise. Device specific parameter sets can be changed by
473 * setting NDTPA_IFINDEX to the interface index of the corresponding
481 __u64 ndts_hash_grows;
482 __u64 ndts_res_failed;
485 __u64 ndts_rcv_probes_mcast;
486 __u64 ndts_rcv_probes_ucast;
487 __u64 ndts_periodic_gc_runs;
488 __u64 ndts_forced_gc_runs;
493 NDTPA_IFINDEX, /* u32, unchangeable */
494 NDTPA_REFCNT, /* u32, read-only */
495 NDTPA_REACHABLE_TIME, /* u64, read-only, msecs */
496 NDTPA_BASE_REACHABLE_TIME, /* u64, msecs */
497 NDTPA_RETRANS_TIME, /* u64, msecs */
498 NDTPA_GC_STALETIME, /* u64, msecs */
499 NDTPA_DELAY_PROBE_TIME, /* u64, msecs */
500 NDTPA_QUEUE_LEN, /* u32 */
501 NDTPA_APP_PROBES, /* u32 */
502 NDTPA_UCAST_PROBES, /* u32 */
503 NDTPA_MCAST_PROBES, /* u32 */
504 NDTPA_ANYCAST_DELAY, /* u64, msecs */
505 NDTPA_PROXY_DELAY, /* u64, msecs */
506 NDTPA_PROXY_QLEN, /* u32 */
507 NDTPA_LOCKTIME, /* u64, msecs */
510 #define NDTPA_MAX (__NDTPA_MAX - 1)
522 __u16 ndtc_entry_size;
524 __u32 ndtc_last_flush; /* delta to now in msecs */
525 __u32 ndtc_last_rand; /* delta to now in msecs */
527 __u32 ndtc_hash_mask;
528 __u32 ndtc_hash_chain_gc;
529 __u32 ndtc_proxy_qlen;
534 NDTA_NAME, /* char *, unchangeable */
535 NDTA_THRESH1, /* u32 */
536 NDTA_THRESH2, /* u32 */
537 NDTA_THRESH3, /* u32 */
538 NDTA_CONFIG, /* struct ndt_config, read-only */
539 NDTA_PARMS, /* nested TLV NDTPA_* */
540 NDTA_STATS, /* struct ndt_stats, read-only */
541 NDTA_GC_INTERVAL, /* u64, msecs */
544 #define NDTA_MAX (__NDTA_MAX - 1)
546 #define NDTA_RTA(r) ((struct rtattr*)(((char*)(r)) + \
547 NLMSG_ALIGN(sizeof(struct ndtmsg))))
548 #define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndtmsg))
552 * General form of address family dependent message.
557 unsigned char rtgen_family;
560 /*****************************************************************
561 * Link layer specific messages.
565 * passes link level specific information, not dependent
566 * on network protocol.
571 unsigned char ifi_family;
572 unsigned char __ifi_pad;
573 unsigned short ifi_type; /* ARPHRD_* */
574 int ifi_index; /* Link index */
575 unsigned ifi_flags; /* IFF_* flags */
576 unsigned ifi_change; /* IFF_* change mask */
579 /********************************************************************
585 unsigned char prefix_family;
586 unsigned char prefix_pad1;
587 unsigned short prefix_pad2;
589 unsigned char prefix_type;
590 unsigned char prefix_len;
591 unsigned char prefix_flags;
592 unsigned char prefix_pad3;
603 #define PREFIX_MAX (__PREFIX_MAX - 1)
605 struct prefix_cacheinfo
607 __u32 preferred_time;
612 /*****************************************************************
613 * Traffic control messages.
618 unsigned char tcm_family;
619 unsigned char tcm__pad1;
620 unsigned short tcm__pad2;
640 #define TCA_MAX (__TCA_MAX - 1)
642 #define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg))))
643 #define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg))
646 /* RTnetlink multicast groups - backwards compatibility for userspace */
647 #define RTMGRP_LINK 1
648 #define RTMGRP_NOTIFY 2
649 #define RTMGRP_NEIGH 4
652 #define RTMGRP_IPV4_IFADDR 0x10
653 #define RTMGRP_IPV4_MROUTE 0x20
654 #define RTMGRP_IPV4_ROUTE 0x40
655 #define RTMGRP_IPV4_RULE 0x80
657 #define RTMGRP_IPV6_IFADDR 0x100
658 #define RTMGRP_IPV6_MROUTE 0x200
659 #define RTMGRP_IPV6_ROUTE 0x400
660 #define RTMGRP_IPV6_IFINFO 0x800
662 #define RTMGRP_DECnet_IFADDR 0x1000
663 #define RTMGRP_DECnet_ROUTE 0x4000
665 #define RTMGRP_IPV6_PREFIX 0x20000
668 /* RTnetlink multicast groups */
669 enum rtnetlink_groups {
671 #define RTNLGRP_NONE RTNLGRP_NONE
673 #define RTNLGRP_LINK RTNLGRP_LINK
675 #define RTNLGRP_NOTIFY RTNLGRP_NOTIFY
677 #define RTNLGRP_NEIGH RTNLGRP_NEIGH
679 #define RTNLGRP_TC RTNLGRP_TC
681 #define RTNLGRP_IPV4_IFADDR RTNLGRP_IPV4_IFADDR
683 #define RTNLGRP_IPV4_MROUTE RTNLGRP_IPV4_MROUTE
685 #define RTNLGRP_IPV4_ROUTE RTNLGRP_IPV4_ROUTE
687 #define RTNLGRP_IPV4_RULE RTNLGRP_IPV4_RULE
689 #define RTNLGRP_IPV6_IFADDR RTNLGRP_IPV6_IFADDR
691 #define RTNLGRP_IPV6_MROUTE RTNLGRP_IPV6_MROUTE
693 #define RTNLGRP_IPV6_ROUTE RTNLGRP_IPV6_ROUTE
695 #define RTNLGRP_IPV6_IFINFO RTNLGRP_IPV6_IFINFO
696 RTNLGRP_DECnet_IFADDR,
697 #define RTNLGRP_DECnet_IFADDR RTNLGRP_DECnet_IFADDR
699 RTNLGRP_DECnet_ROUTE,
700 #define RTNLGRP_DECnet_ROUTE RTNLGRP_DECnet_ROUTE
704 #define RTNLGRP_IPV6_PREFIX RTNLGRP_IPV6_PREFIX
706 #define RTNLGRP_IPV6_RULE RTNLGRP_IPV6_RULE
709 #define RTNLGRP_MAX (__RTNLGRP_MAX - 1)
711 /* TC action piece */
714 unsigned char tca_family;
715 unsigned char tca__pad1;
716 unsigned short tca__pad2;
718 #define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg))))
719 #define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg))
720 #define TCA_ACT_TAB 1 /* attr type must be >=1 */
723 /* End of information exported to user level */
727 #include <linux/mutex.h>
729 extern size_t rtattr_strlcpy(char *dest, const struct rtattr *rta, size_t size);
730 static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
732 int len = strlen(str) + 1;
733 return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len);
736 extern int rtattr_parse(struct rtattr *tb[], int maxattr, struct rtattr *rta, int len);
738 #define rtattr_parse_nested(tb, max, rta) \
739 rtattr_parse((tb), (max), RTA_DATA((rta)), RTA_PAYLOAD((rta)))
741 extern struct sock *rtnl;
743 struct rtnetlink_link
745 int (*doit)(struct sk_buff *, struct nlmsghdr*, void *attr);
746 int (*dumpit)(struct sk_buff *, struct netlink_callback *cb);
749 extern struct rtnetlink_link * rtnetlink_links[NPROTO];
750 extern int rtnetlink_send(struct sk_buff *skb, u32 pid, u32 group, int echo);
751 extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
753 extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data);
755 #define RTA_PUT(skb, attrtype, attrlen, data) \
756 ({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
757 goto rtattr_failure; \
758 __rta_fill(skb, attrtype, attrlen, data); })
760 #define RTA_APPEND(skb, attrlen, data) \
761 ({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \
762 goto rtattr_failure; \
763 memcpy(skb_put(skb, attrlen), data, attrlen); })
765 #define RTA_PUT_NOHDR(skb, attrlen, data) \
766 ({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \
767 memset(skb->tail - (RTA_ALIGN(attrlen) - attrlen), 0, \
768 RTA_ALIGN(attrlen) - attrlen); })
770 #define RTA_PUT_U8(skb, attrtype, value) \
771 ({ u8 _tmp = (value); \
772 RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); })
774 #define RTA_PUT_U16(skb, attrtype, value) \
775 ({ u16 _tmp = (value); \
776 RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); })
778 #define RTA_PUT_U32(skb, attrtype, value) \
779 ({ u32 _tmp = (value); \
780 RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); })
782 #define RTA_PUT_U64(skb, attrtype, value) \
783 ({ u64 _tmp = (value); \
784 RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); })
786 #define RTA_PUT_SECS(skb, attrtype, value) \
787 RTA_PUT_U64(skb, attrtype, (value) / HZ)
789 #define RTA_PUT_MSECS(skb, attrtype, value) \
790 RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value))
792 #define RTA_PUT_STRING(skb, attrtype, value) \
793 RTA_PUT(skb, attrtype, strlen(value) + 1, value)
795 #define RTA_PUT_FLAG(skb, attrtype) \
796 RTA_PUT(skb, attrtype, 0, NULL);
798 #define RTA_NEST(skb, type) \
799 ({ struct rtattr *__start = (struct rtattr *) (skb)->tail; \
800 RTA_PUT(skb, type, 0, NULL); \
803 #define RTA_NEST_END(skb, start) \
804 ({ (start)->rta_len = ((skb)->tail - (unsigned char *) (start)); \
807 #define RTA_NEST_CANCEL(skb, start) \
809 skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
812 #define RTA_GET_U8(rta) \
813 ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \
814 goto rtattr_failure; \
815 *(u8 *) RTA_DATA(rta); })
817 #define RTA_GET_U16(rta) \
818 ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \
819 goto rtattr_failure; \
820 *(u16 *) RTA_DATA(rta); })
822 #define RTA_GET_U32(rta) \
823 ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \
824 goto rtattr_failure; \
825 *(u32 *) RTA_DATA(rta); })
827 #define RTA_GET_U64(rta) \
829 if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \
830 goto rtattr_failure; \
831 memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \
834 #define RTA_GET_FLAG(rta) (!!(rta))
836 #define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ)
837 #define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta)))
839 static inline struct rtattr *
840 __rta_reserve(struct sk_buff *skb, int attrtype, int attrlen)
843 int size = RTA_LENGTH(attrlen);
845 rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
846 rta->rta_type = attrtype;
848 memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
852 #define __RTA_PUT(skb, attrtype, attrlen) \
853 ({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
854 goto rtattr_failure; \
855 __rta_reserve(skb, attrtype, attrlen); })
857 extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
859 /* RTNL is used as a global lock for all changes to network configuration */
860 extern void rtnl_lock(void);
861 extern void rtnl_unlock(void);
862 extern int rtnl_trylock(void);
864 extern void rtnetlink_init(void);
865 extern void __rtnl_unlock(void);
867 #define ASSERT_RTNL() do { \
868 if (unlikely(rtnl_trylock())) { \
870 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
871 __FILE__, __LINE__); \
876 #define BUG_TRAP(x) do { \
877 if (unlikely(!(x))) { \
878 printk(KERN_ERR "KERNEL: assertion (%s) failed at %s (%d)\n", \
879 #x, __FILE__ , __LINE__); \
883 #endif /* __KERNEL__ */
886 #endif /* __LINUX_RTNETLINK_H */