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a192a2e9 | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
2516cfb1 VB |
2 | #ifndef __LINUX_IF_ADDR_H |
3 | #define __LINUX_IF_ADDR_H | |
4 | ||
5 | #include <linux/types.h> | |
6 | #include <linux/netlink.h> | |
7 | ||
8 | struct ifaddrmsg { | |
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. | |
a192a2e9 VB |
22 | * |
23 | * IFA_FLAGS is a u32 attribute that extends the u8 field ifa_flags. | |
24 | * If present, the value from struct ifaddrmsg will be ignored. | |
2516cfb1 VB |
25 | */ |
26 | enum { | |
27 | IFA_UNSPEC, | |
28 | IFA_ADDRESS, | |
29 | IFA_LOCAL, | |
30 | IFA_LABEL, | |
31 | IFA_BROADCAST, | |
32 | IFA_ANYCAST, | |
33 | IFA_CACHEINFO, | |
34 | IFA_MULTICAST, | |
a192a2e9 VB |
35 | IFA_FLAGS, |
36 | IFA_RT_PRIORITY, /* u32, priority/metric for prefix route */ | |
2516cfb1 VB |
37 | __IFA_MAX, |
38 | }; | |
39 | ||
40 | #define IFA_MAX (__IFA_MAX - 1) | |
41 | ||
42 | /* ifa_flags */ | |
43 | #define IFA_F_SECONDARY 0x01 | |
44 | #define IFA_F_TEMPORARY IFA_F_SECONDARY | |
45 | ||
46 | #define IFA_F_NODAD 0x02 | |
47 | #define IFA_F_OPTIMISTIC 0x04 | |
48 | #define IFA_F_DADFAILED 0x08 | |
49 | #define IFA_F_HOMEADDRESS 0x10 | |
50 | #define IFA_F_DEPRECATED 0x20 | |
51 | #define IFA_F_TENTATIVE 0x40 | |
52 | #define IFA_F_PERMANENT 0x80 | |
a192a2e9 VB |
53 | #define IFA_F_MANAGETEMPADDR 0x100 |
54 | #define IFA_F_NOPREFIXROUTE 0x200 | |
55 | #define IFA_F_MCAUTOJOIN 0x400 | |
56 | #define IFA_F_STABLE_PRIVACY 0x800 | |
2516cfb1 VB |
57 | |
58 | struct ifa_cacheinfo { | |
59 | __u32 ifa_prefered; | |
60 | __u32 ifa_valid; | |
61 | __u32 cstamp; /* created timestamp, hundredths of seconds */ | |
62 | __u32 tstamp; /* updated timestamp, hundredths of seconds */ | |
63 | }; | |
64 | ||
65 | /* backwards compatibility for userspace */ | |
a192a2e9 | 66 | #define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) |
2516cfb1 VB |
67 | #define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) |
68 | ||
69 | #endif |