#ifndef __LINUX_RTNETLINK_H
#define __LINUX_RTNETLINK_H

#include "netlink.h"
#include <stdint.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_SETLINK     (RTM_BASE + 3)

#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) >= (int)sizeof(struct rtattr) && \
			  (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	*/
	__RTN_MAX
};

#define RTN_MAX (__RTN_MAX - 1)

/* 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 */
#define RTPROT_XORP     14      /* XORP */
#define RTPROT_NTK      15      /* Netsukuku */
#define RTPROT_DHCP     16      /* DHCP client */

/* 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, /* no longer used */
	RTA_FLOW,
	RTA_CACHEINFO,
	RTA_SESSION,    /* no longer used */
	RTA_MP_ALGO,    /* no longer used */
	RTA_TABLE,
	RTA_MARK,
	__RTA_MAX
};

#define RTA_MAX (__RTA_MAX - 1)

#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 {
	uint32_t rta_clntref;
	uint32_t rta_lastuse;
	int32_t rta_expires;
	uint32_t rta_error;
	uint32_t rta_used;

#define RTNETLINK_HAVE_PEERINFO 1
	uint32_t rta_id;
	uint32_t rta_ts;
	uint32_t 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
	RTAX_RTO_MIN,
#define RTAX_RTO_MIN RTAX_RTO_MIN
	RTAX_INITRWND,
#define RTAX_INITRWND RTAX_INITRWND
	__RTAX_MAX
};

#define RTAX_MAX (__RTAX_MAX - 1)

struct rta_session {
	uint8_t proto;

	union {
		struct {
			uint16_t sport;
			uint16_t dport;
		} ports;

		struct {
			uint8_t type;
			uint8_t code;
			uint16_t ident;
		} icmpt;

		uint32_t 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 {
	int32_t ifa_prefered;
	int32_t 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			*/
	uint16_t ndm_state;
	uint8_t ndm_flags;
	uint8_t 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 {
	uint32_t ndm_confirmed;
	uint32_t ndm_used;
	uint32_t ndm_updated;
	uint32_t 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 neiher 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;
	uint32_t tcm_handle;
	uint32_t tcm_parent;
	uint32_t 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 */

#endif  /* __LINUX_RTNETLINK_H */
