diff options
Diffstat (limited to 'src/rtnetlink.h')
| -rw-r--r-- | src/rtnetlink.h | 631 |
1 files changed, 0 insertions, 631 deletions
diff --git a/src/rtnetlink.h b/src/rtnetlink.h deleted file mode 100644 index f16fb11..0000000 --- a/src/rtnetlink.h +++ /dev/null @@ -1,631 +0,0 @@ -#ifndef __LINUX_RTNETLINK_H -#define __LINUX_RTNETLINK_H - -#include <linux/netlink.h> - -#define RTNL_DEBUG 1 - - -/**** - * Routing/neighbour discovery messages. - ****/ - -/* Types of messages */ - -#define RTM_BASE 0x10 - -#define RTM_NEWLINK (RTM_BASE+0) -#define RTM_DELLINK (RTM_BASE+1) -#define RTM_GETLINK (RTM_BASE+2) - -#define RTM_NEWADDR (RTM_BASE+4) -#define RTM_DELADDR (RTM_BASE+5) -#define RTM_GETADDR (RTM_BASE+6) - -#define RTM_NEWROUTE (RTM_BASE+8) -#define RTM_DELROUTE (RTM_BASE+9) -#define RTM_GETROUTE (RTM_BASE+10) - -#define RTM_NEWNEIGH (RTM_BASE+12) -#define RTM_DELNEIGH (RTM_BASE+13) -#define RTM_GETNEIGH (RTM_BASE+14) - -#define RTM_NEWRULE (RTM_BASE+16) -#define RTM_DELRULE (RTM_BASE+17) -#define RTM_GETRULE (RTM_BASE+18) - -#define RTM_NEWQDISC (RTM_BASE+20) -#define RTM_DELQDISC (RTM_BASE+21) -#define RTM_GETQDISC (RTM_BASE+22) - -#define RTM_NEWTCLASS (RTM_BASE+24) -#define RTM_DELTCLASS (RTM_BASE+25) -#define RTM_GETTCLASS (RTM_BASE+26) - -#define RTM_NEWTFILTER (RTM_BASE+28) -#define RTM_DELTFILTER (RTM_BASE+29) -#define RTM_GETTFILTER (RTM_BASE+30) - -#define RTM_MAX (RTM_BASE+31) - -/* - Generic structure for encapsulation of optional route information. - It is reminiscent of sockaddr, but with sa_family replaced - with attribute type. - */ - -struct rtattr -{ - unsigned short rta_len; - unsigned short rta_type; -}; - -/* Macros to handle rtattributes */ - -#define RTA_ALIGNTO 4 -#define RTA_ALIGN(len) ( ((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1) ) -#define RTA_OK(rta,len) ((len) > 0 && (rta)->rta_len >= sizeof(struct rtattr) && \ - (rta)->rta_len <= (len)) -#define RTA_NEXT(rta,attrlen) ((attrlen) -= RTA_ALIGN((rta)->rta_len), \ - (struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len))) -#define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len)) -#define RTA_SPACE(len) RTA_ALIGN(RTA_LENGTH(len)) -#define RTA_DATA(rta) ((void*)(((char*)(rta)) + RTA_LENGTH(0))) -#define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0)) - - - - -/****************************************************************************** - * Definitions used in routing table administration. - ****/ - -struct rtmsg -{ - unsigned char rtm_family; - unsigned char rtm_dst_len; - unsigned char rtm_src_len; - unsigned char rtm_tos; - - unsigned char rtm_table; /* Routing table id */ - unsigned char rtm_protocol; /* Routing protocol; see below */ - unsigned char rtm_scope; /* See below */ - unsigned char rtm_type; /* See below */ - - unsigned rtm_flags; -}; - -/* rtm_type */ - -enum -{ - RTN_UNSPEC, - RTN_UNICAST, /* Gateway or direct route */ - RTN_LOCAL, /* Accept locally */ - RTN_BROADCAST, /* Accept locally as broadcast, - send as broadcast */ - RTN_ANYCAST, /* Accept locally as broadcast, - but send as unicast */ - RTN_MULTICAST, /* Multicast route */ - RTN_BLACKHOLE, /* Drop */ - RTN_UNREACHABLE, /* Destination is unreachable */ - RTN_PROHIBIT, /* Administratively prohibited */ - RTN_THROW, /* Not in this table */ - RTN_NAT, /* Translate this address */ - RTN_XRESOLVE, /* Use external resolver */ -}; - -#define RTN_MAX RTN_XRESOLVE - - -/* rtm_protocol */ - -#define RTPROT_UNSPEC 0 -#define RTPROT_REDIRECT 1 /* Route installed by ICMP redirects; - not used by current IPv4 */ -#define RTPROT_KERNEL 2 /* Route installed by kernel */ -#define RTPROT_BOOT 3 /* Route installed during boot */ -#define RTPROT_STATIC 4 /* Route installed by administrator */ - -/* Values of protocol >= RTPROT_STATIC are not interpreted by kernel; - they are just passed from user and back as is. - It will be used by hypothetical multiple routing daemons. - Note that protocol values should be standardized in order to - avoid conflicts. - */ - -#define RTPROT_GATED 8 /* Apparently, GateD */ -#define RTPROT_RA 9 /* RDISC/ND router advertisements */ -#define RTPROT_MRT 10 /* Merit MRT */ -#define RTPROT_ZEBRA 11 /* Zebra */ -#define RTPROT_BIRD 12 /* BIRD */ -#define RTPROT_DNROUTED 13 /* DECnet routing daemon */ - -/* rtm_scope - - Really it is not scope, but sort of distance to the destination. - NOWHERE are reserved for not existing destinations, HOST is our - local addresses, LINK are destinations, located on directly attached - link and UNIVERSE is everywhere in the Universe. - - Intermediate values are also possible f.e. interior routes - could be assigned a value between UNIVERSE and LINK. -*/ - -enum rt_scope_t -{ - RT_SCOPE_UNIVERSE=0, -/* User defined values */ - RT_SCOPE_SITE=200, - RT_SCOPE_LINK=253, - RT_SCOPE_HOST=254, - RT_SCOPE_NOWHERE=255 -}; - -/* rtm_flags */ - -#define RTM_F_NOTIFY 0x100 /* Notify user of route change */ -#define RTM_F_CLONED 0x200 /* This route is cloned */ -#define RTM_F_EQUALIZE 0x400 /* Multipath equalizer: NI */ -#define RTM_F_PREFIX 0x800 /* Prefix addresses */ - -/* Reserved table identifiers */ - -enum rt_class_t -{ - RT_TABLE_UNSPEC=0, -/* User defined values */ - RT_TABLE_DEFAULT=253, - RT_TABLE_MAIN=254, - RT_TABLE_LOCAL=255 -}; -#define RT_TABLE_MAX RT_TABLE_LOCAL - - - -/* Routing message attributes */ - -enum rtattr_type_t -{ - RTA_UNSPEC, - RTA_DST, - RTA_SRC, - RTA_IIF, - RTA_OIF, - RTA_GATEWAY, - RTA_PRIORITY, - RTA_PREFSRC, - RTA_METRICS, - RTA_MULTIPATH, - RTA_PROTOINFO, - RTA_FLOW, - RTA_CACHEINFO, - RTA_SESSION, -}; - -#define RTA_MAX RTA_SESSION - -#define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg)))) -#define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg)) - -/* RTM_MULTIPATH --- array of struct rtnexthop. - * - * "struct rtnexthop" describes all necessary nexthop information, - * i.e. parameters of path to a destination via this nexthop. - * - * At the moment it is impossible to set different prefsrc, mtu, window - * and rtt for different paths from multipath. - */ - -struct rtnexthop -{ - unsigned short rtnh_len; - unsigned char rtnh_flags; - unsigned char rtnh_hops; - int rtnh_ifindex; -}; - -/* rtnh_flags */ - -#define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */ -#define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */ -#define RTNH_F_ONLINK 4 /* Gateway is forced on link */ - -/* Macros to handle hexthops */ - -#define RTNH_ALIGNTO 4 -#define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) ) -#define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \ - ((int)(rtnh)->rtnh_len) <= (len)) -#define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len))) -#define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len)) -#define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len)) -#define RTNH_DATA(rtnh) ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0))) - -/* RTM_CACHEINFO */ - -struct rta_cacheinfo -{ - __u32 rta_clntref; - __u32 rta_lastuse; - __s32 rta_expires; - __u32 rta_error; - __u32 rta_used; - -#define RTNETLINK_HAVE_PEERINFO 1 - __u32 rta_id; - __u32 rta_ts; - __u32 rta_tsage; -}; - -/* RTM_METRICS --- array of struct rtattr with types of RTAX_* */ - -enum -{ - RTAX_UNSPEC, -#define RTAX_UNSPEC RTAX_UNSPEC - RTAX_LOCK, -#define RTAX_LOCK RTAX_LOCK - RTAX_MTU, -#define RTAX_MTU RTAX_MTU - RTAX_WINDOW, -#define RTAX_WINDOW RTAX_WINDOW - RTAX_RTT, -#define RTAX_RTT RTAX_RTT - RTAX_RTTVAR, -#define RTAX_RTTVAR RTAX_RTTVAR - RTAX_SSTHRESH, -#define RTAX_SSTHRESH RTAX_SSTHRESH - RTAX_CWND, -#define RTAX_CWND RTAX_CWND - RTAX_ADVMSS, -#define RTAX_ADVMSS RTAX_ADVMSS - RTAX_REORDERING, -#define RTAX_REORDERING RTAX_REORDERING - RTAX_HOPLIMIT, -#define RTAX_HOPLIMIT RTAX_HOPLIMIT - RTAX_INITCWND, -#define RTAX_INITCWND RTAX_INITCWND - RTAX_FEATURES, -#define RTAX_FEATURES RTAX_FEATURES -}; - -#define RTAX_MAX RTAX_FEATURES - -#define RTAX_FEATURE_ECN 0x00000001 -#define RTAX_FEATURE_SACK 0x00000002 -#define RTAX_FEATURE_TIMESTAMP 0x00000004 - -struct rta_session -{ - __u8 proto; - - union { - struct { - __u16 sport; - __u16 dport; - } ports; - - struct { - __u8 type; - __u8 code; - __u16 ident; - } icmpt; - - __u32 spi; - } u; -}; - - -/********************************************************* - * Interface address. - ****/ - -struct ifaddrmsg -{ - unsigned char ifa_family; - unsigned char ifa_prefixlen; /* The prefix length */ - unsigned char ifa_flags; /* Flags */ - unsigned char ifa_scope; /* See above */ - int ifa_index; /* Link index */ -}; - -enum -{ - IFA_UNSPEC, - IFA_ADDRESS, - IFA_LOCAL, - IFA_LABEL, - IFA_BROADCAST, - IFA_ANYCAST, - IFA_CACHEINFO -}; - -#define IFA_MAX IFA_CACHEINFO - -/* ifa_flags */ - -#define IFA_F_SECONDARY 0x01 -#define IFA_F_TEMPORARY IFA_F_SECONDARY - -#define IFA_F_DEPRECATED 0x20 -#define IFA_F_TENTATIVE 0x40 -#define IFA_F_PERMANENT 0x80 - -struct ifa_cacheinfo -{ - __s32 ifa_prefered; - __s32 ifa_valid; -}; - - -#define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) -#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) - -/* - Important comment: - IFA_ADDRESS is prefix address, rather than local interface address. - It makes no difference for normally configured broadcast interfaces, - but for point-to-point IFA_ADDRESS is DESTINATION address, - local address is supplied in IFA_LOCAL attribute. - */ - -/************************************************************** - * Neighbour discovery. - ****/ - -struct ndmsg -{ - unsigned char ndm_family; - unsigned char ndm_pad1; - unsigned short ndm_pad2; - int ndm_ifindex; /* Link index */ - __u16 ndm_state; - __u8 ndm_flags; - __u8 ndm_type; -}; - -enum -{ - NDA_UNSPEC, - NDA_DST, - NDA_LLADDR, - NDA_CACHEINFO -}; - -#define NDA_MAX NDA_CACHEINFO - -#define NDA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg)))) -#define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg)) - -/* - * Neighbor Cache Entry Flags - */ - -#define NTF_PROXY 0x08 /* == ATF_PUBL */ -#define NTF_ROUTER 0x80 - -/* - * Neighbor Cache Entry States. - */ - -#define NUD_INCOMPLETE 0x01 -#define NUD_REACHABLE 0x02 -#define NUD_STALE 0x04 -#define NUD_DELAY 0x08 -#define NUD_PROBE 0x10 -#define NUD_FAILED 0x20 - -/* Dummy states */ -#define NUD_NOARP 0x40 -#define NUD_PERMANENT 0x80 -#define NUD_NONE 0x00 - - -struct nda_cacheinfo -{ - __u32 ndm_confirmed; - __u32 ndm_used; - __u32 ndm_updated; - __u32 ndm_refcnt; -}; - -/**** - * General form of address family dependent message. - ****/ - -struct rtgenmsg -{ - unsigned char rtgen_family; -}; - -/***************************************************************** - * Link layer specific messages. - ****/ - -/* struct ifinfomsg - * passes link level specific information, not dependent - * on network protocol. - */ - -struct ifinfomsg -{ - unsigned char ifi_family; - unsigned char __ifi_pad; - unsigned short ifi_type; /* ARPHRD_* */ - int ifi_index; /* Link index */ - unsigned ifi_flags; /* IFF_* flags */ - unsigned ifi_change; /* IFF_* change mask */ -}; - -enum -{ - IFLA_UNSPEC, - IFLA_ADDRESS, - IFLA_BROADCAST, - IFLA_IFNAME, - IFLA_MTU, - IFLA_LINK, - IFLA_QDISC, - IFLA_STATS, - IFLA_COST, -#define IFLA_COST IFLA_COST - IFLA_PRIORITY, -#define IFLA_PRIORITY IFLA_PRIORITY - IFLA_MASTER, -#define IFLA_MASTER IFLA_MASTER - IFLA_WIRELESS, /* Wireless Extension event - see wireless.h */ -#define IFLA_WIRELESS IFLA_WIRELESS -}; - - -#define IFLA_MAX IFLA_WIRELESS - -#define IFLA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg)))) -#define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg)) - -/* ifi_flags. - - IFF_* flags. - - The only change is: - IFF_LOOPBACK, IFF_BROADCAST and IFF_POINTOPOINT are - more not changeable by user. They describe link media - characteristics and set by device driver. - - Comments: - - Combination IFF_BROADCAST|IFF_POINTOPOINT is invalid - - If neither of these three flags are set; - the interface is NBMA. - - - IFF_MULTICAST does not mean anything special: - multicasts can be used on all not-NBMA links. - IFF_MULTICAST means that this media uses special encapsulation - for multicast frames. Apparently, all IFF_POINTOPOINT and - IFF_BROADCAST devices are able to use multicasts too. - */ - -/* IFLA_LINK. - For usual devices it is equal ifi_index. - If it is a "virtual interface" (f.e. tunnel), ifi_link - can point to real physical interface (f.e. for bandwidth calculations), - or maybe 0, what means, that real media is unknown (usual - for IPIP tunnels, when route to endpoint is allowed to change) - */ - -/***************************************************************** - * Traffic control messages. - ****/ - -struct tcmsg -{ - unsigned char tcm_family; - unsigned char tcm__pad1; - unsigned short tcm__pad2; - int tcm_ifindex; - __u32 tcm_handle; - __u32 tcm_parent; - __u32 tcm_info; -}; - -enum -{ - TCA_UNSPEC, - TCA_KIND, - TCA_OPTIONS, - TCA_STATS, - TCA_XSTATS, - TCA_RATE, -}; - -#define TCA_MAX TCA_RATE - -#define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg)))) -#define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg)) - - -/* SUMMARY: maximal rtattr understood by kernel */ - -#define RTATTR_MAX RTA_MAX - -/* RTnetlink multicast groups */ - -#define RTMGRP_LINK 1 -#define RTMGRP_NOTIFY 2 -#define RTMGRP_NEIGH 4 -#define RTMGRP_TC 8 - -#define RTMGRP_IPV4_IFADDR 0x10 -#define RTMGRP_IPV4_MROUTE 0x20 -#define RTMGRP_IPV4_ROUTE 0x40 - -#define RTMGRP_IPV6_IFADDR 0x100 -#define RTMGRP_IPV6_MROUTE 0x200 -#define RTMGRP_IPV6_ROUTE 0x400 - -#define RTMGRP_DECnet_IFADDR 0x1000 -#define RTMGRP_DECnet_ROUTE 0x4000 - -/* End of information exported to user level */ - -#ifdef __KERNEL__ - -#include <linux/config.h> - -static __inline__ int rtattr_strcmp(struct rtattr *rta, char *str) -{ - int len = strlen(str) + 1; - return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len); -} - -extern int rtattr_parse(struct rtattr *tb[], int maxattr, struct rtattr *rta, int len); - -extern struct sock *rtnl; - -struct rtnetlink_link -{ - int (*doit)(struct sk_buff *, struct nlmsghdr*, void *attr); - int (*dumpit)(struct sk_buff *, struct netlink_callback *cb); -}; - -extern struct rtnetlink_link * rtnetlink_links[NPROTO]; -extern int rtnetlink_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb); -extern int rtnetlink_send(struct sk_buff *skb, u32 pid, u32 group, int echo); -extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics); - -extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data); - -#define RTA_PUT(skb, attrtype, attrlen, data) \ -({ if (skb_tailroom(skb) < (int)RTA_SPACE(attrlen)) goto rtattr_failure; \ - __rta_fill(skb, attrtype, attrlen, data); }) - -extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change); - -extern struct semaphore rtnl_sem; - -#define rtnl_exlock() do { } while(0) -#define rtnl_exunlock() do { } while(0) -#define rtnl_exlock_nowait() (0) - -#define rtnl_shlock() down(&rtnl_sem) -#define rtnl_shlock_nowait() down_trylock(&rtnl_sem) - -#define rtnl_shunlock() do { up(&rtnl_sem); \ - if (rtnl && rtnl->receive_queue.qlen) \ - rtnl->data_ready(rtnl, 0); \ - } while(0) - -extern void rtnl_lock(void); -extern void rtnl_unlock(void); -extern void rtnetlink_init(void); - -#define ASSERT_RTNL() do { if (down_trylock(&rtnl_sem) == 0) { up(&rtnl_sem); \ -printk("RTNL: assertion failed at " __FILE__ "(%d)\n", __LINE__); } \ - } while(0) -#define BUG_TRAP(x) if (!(x)) { printk("KERNEL: assertion (" #x ") failed at " __FILE__ "(%d)\n", __LINE__); } - - -#endif /* __KERNEL__ */ - - -#endif /* __LINUX_RTNETLINK_H */ |