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#ifndef __LINUX_IF_ADDR_H

#define __LINUX_IF_ADDR_H

#include <linux/types.h>

#include <linux/netlink.h>

struct ifaddrmsg {

        __u8            ifa_family;

        __u8            ifa_prefixlen;  /* The prefix length            */

        __u8            ifa_flags;      /* Flags                        */

        __u8            ifa_scope;      /* Address scope                */

        __u32           ifa_index;      /* Link index                   */

};

/*

 * 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.

 *

 * IFA_FLAGS is a u32 attribute that extends the u8 field ifa_flags.

 * If present, the value from struct ifaddrmsg will be ignored.

 */

enum {

        IFA_UNSPEC,

        IFA_ADDRESS,

        IFA_LOCAL,

        IFA_LABEL,

        IFA_BROADCAST,

        IFA_ANYCAST,

        IFA_CACHEINFO,

        IFA_MULTICAST,

        IFA_FLAGS,

        __IFA_MAX,

};

#define IFA_MAX (__IFA_MAX - 1)

/* ifa_flags */

#define IFA_F_SECONDARY         0x01

#define IFA_F_TEMPORARY         IFA_F_SECONDARY

#define IFA_F_NODAD             0x02

#define IFA_F_OPTIMISTIC        0x04

#define IFA_F_DADFAILED         0x08

#define IFA_F_HOMEADDRESS       0x10

#define IFA_F_DEPRECATED        0x20

#define IFA_F_TENTATIVE         0x40

#define IFA_F_PERMANENT         0x80

#define IFA_F_MANAGETEMPADDR    0x100

#define IFA_F_NOPREFIXROUTE     0x200

struct ifa_cacheinfo {

        __u32   ifa_prefered;

        __u32   ifa_valid;

        __u32   cstamp; /* created timestamp, hundredths of seconds */

        __u32   tstamp; /* updated timestamp, hundredths of seconds */

};

/* backwards compatibility for userspace */

#define IFA_RTA(r)  ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))

#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg))

#endif