Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
[platform/adaptation/renesas_rcar/renesas_kernel.git] / include / linux / if_addr.h
1 #ifndef __LINUX_IF_ADDR_H
2 #define __LINUX_IF_ADDR_H
3
4 #include <linux/types.h>
5 #include <linux/netlink.h>
6
7 struct ifaddrmsg {
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         IFA_UNSPEC,
24         IFA_ADDRESS,
25         IFA_LOCAL,
26         IFA_LABEL,
27         IFA_BROADCAST,
28         IFA_ANYCAST,
29         IFA_CACHEINFO,
30         IFA_MULTICAST,
31         __IFA_MAX,
32 };
33
34 #define IFA_MAX (__IFA_MAX - 1)
35
36 /* ifa_flags */
37 #define IFA_F_SECONDARY         0x01
38 #define IFA_F_TEMPORARY         IFA_F_SECONDARY
39
40 #define IFA_F_NODAD             0x02
41 #define IFA_F_OPTIMISTIC        0x04
42 #define IFA_F_DADFAILED         0x08
43 #define IFA_F_HOMEADDRESS       0x10
44 #define IFA_F_DEPRECATED        0x20
45 #define IFA_F_TENTATIVE         0x40
46 #define IFA_F_PERMANENT         0x80
47
48 struct ifa_cacheinfo {
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
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
61 #endif