[mirror_ubuntu-focal-kernel.git] / include / linux / if_addr.h

#ifndef __LINUX_IF_ADDR_H
#define __LINUX_IF_ADDR_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.
 */
enum
{
	IFA_UNSPEC,
	IFA_ADDRESS,
	IFA_LOCAL,
	IFA_LABEL,
	IFA_BROADCAST,
	IFA_ANYCAST,
	IFA_CACHEINFO,
	IFA_MULTICAST,
	__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_HOMEADDRESS	0x10
#define IFA_F_DEPRECATED	0x20
#define IFA_F_TENTATIVE		0x40
#define IFA_F_PERMANENT		0x80

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
Commit	Line	Data
1823730f TG	1	#ifndef __LINUX_IF_ADDR_H
	2	#define __LINUX_IF_ADDR_H
	3
	4	#include <linux/netlink.h>
	5
	6	struct ifaddrmsg
	7	{
	8	__u8 ifa_family;
	9	__u8 ifa_prefixlen; /* The prefix length */
	10	__u8 ifa_flags; /* Flags */
	11	__u8 ifa_scope; /* Address scope */
	12	__u32 ifa_index; /* Link index */
	13	};
	14
	15	/*
	16	* Important comment:
	17	* IFA_ADDRESS is prefix address, rather than local interface address.
	18	* It makes no difference for normally configured broadcast interfaces,
	19	* but for point-to-point IFA_ADDRESS is DESTINATION address,
	20	* local address is supplied in IFA_LOCAL attribute.
	21	*/
	22	enum
	23	{
	24	IFA_UNSPEC,
	25	IFA_ADDRESS,
	26	IFA_LOCAL,
	27	IFA_LABEL,
	28	IFA_BROADCAST,
	29	IFA_ANYCAST,
	30	IFA_CACHEINFO,
	31	IFA_MULTICAST,
	32	__IFA_MAX,
	33	};
	34
	35	#define IFA_MAX (__IFA_MAX - 1)
	36
	37	/* ifa_flags */
	38	#define IFA_F_SECONDARY 0x01
	39	#define IFA_F_TEMPORARY IFA_F_SECONDARY
	40
55ebaef1	41	#define IFA_F_NODAD 0x02
3b9f9a1c	42	#define IFA_F_HOMEADDRESS 0x10
1823730f TG	43	#define IFA_F_DEPRECATED 0x20
	44	#define IFA_F_TENTATIVE 0x40
	45	#define IFA_F_PERMANENT 0x80
	46
	47	struct ifa_cacheinfo
	48	{
	49	__u32 ifa_prefered;
	50	__u32 ifa_valid;
	51	__u32 cstamp; /* created timestamp, hundredths of seconds */
	52	__u32 tstamp; /* updated timestamp, hundredths of seconds */
	53	};
	54
d3dcc077 DM	55	/* backwards compatibility for userspace */
	56	#ifndef __KERNEL__
	57	#define IFA_RTA(r) ((struct rtattr)(((char)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
	58	#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg))
	59	#endif
	60
1823730f	61	#endif