Release 4.7 include/uapi/linux/if_addr.h

#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

#define IFA_F_MCAUTOJOIN	0x400

#define IFA_F_STABLE_PRIVACY	0x800


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 */
#ifndef __KERNEL__

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

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

#endif
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