Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec...
[linux-2.6] / 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 {
9         __u8            ifa_family;
10         __u8            ifa_prefixlen;  /* The prefix length            */
11         __u8            ifa_flags;      /* Flags                        */
12         __u8            ifa_scope;      /* Address scope                */
13         __u32           ifa_index;      /* Link index                   */
14 };
15
16 /*
17  * Important comment:
18  * IFA_ADDRESS is prefix address, rather than local interface address.
19  * It makes no difference for normally configured broadcast interfaces,
20  * but for point-to-point IFA_ADDRESS is DESTINATION address,
21  * local address is supplied in IFA_LOCAL attribute.
22  */
23 enum
24 {
25         IFA_UNSPEC,
26         IFA_ADDRESS,
27         IFA_LOCAL,
28         IFA_LABEL,
29         IFA_BROADCAST,
30         IFA_ANYCAST,
31         IFA_CACHEINFO,
32         IFA_MULTICAST,
33         __IFA_MAX,
34 };
35
36 #define IFA_MAX (__IFA_MAX - 1)
37
38 /* ifa_flags */
39 #define IFA_F_SECONDARY         0x01
40 #define IFA_F_TEMPORARY         IFA_F_SECONDARY
41
42 #define IFA_F_NODAD             0x02
43 #define IFA_F_OPTIMISTIC        0x04
44 #define IFA_F_HOMEADDRESS       0x10
45 #define IFA_F_DEPRECATED        0x20
46 #define IFA_F_TENTATIVE         0x40
47 #define IFA_F_PERMANENT         0x80
48
49 struct ifa_cacheinfo
50 {
51         __u32   ifa_prefered;
52         __u32   ifa_valid;
53         __u32   cstamp; /* created timestamp, hundredths of seconds */
54         __u32   tstamp; /* updated timestamp, hundredths of seconds */
55 };
56
57 /* backwards compatibility for userspace */
58 #ifndef __KERNEL__
59 #define IFA_RTA(r)  ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
60 #define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg))
61 #endif
62
63 #endif