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6f52b16c | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
1823730f TG |
2 | #ifndef __LINUX_IF_ADDR_H |
3 | #define __LINUX_IF_ADDR_H | |
4 | ||
680ee0bd | 5 | #include <linux/types.h> |
1823730f TG |
6 | #include <linux/netlink.h> |
7 | ||
d94d9fee | 8 | struct ifaddrmsg { |
1823730f TG |
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. | |
479840ff JP |
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. | |
1823730f | 25 | */ |
d94d9fee | 26 | enum { |
1823730f TG |
27 | IFA_UNSPEC, |
28 | IFA_ADDRESS, | |
29 | IFA_LOCAL, | |
30 | IFA_LABEL, | |
31 | IFA_BROADCAST, | |
32 | IFA_ANYCAST, | |
33 | IFA_CACHEINFO, | |
34 | IFA_MULTICAST, | |
479840ff | 35 | IFA_FLAGS, |
1823730f TG |
36 | __IFA_MAX, |
37 | }; | |
38 | ||
39 | #define IFA_MAX (__IFA_MAX - 1) | |
40 | ||
41 | /* ifa_flags */ | |
42 | #define IFA_F_SECONDARY 0x01 | |
43 | #define IFA_F_TEMPORARY IFA_F_SECONDARY | |
44 | ||
55ebaef1 | 45 | #define IFA_F_NODAD 0x02 |
95c385b4 | 46 | #define IFA_F_OPTIMISTIC 0x04 |
cc411d0b | 47 | #define IFA_F_DADFAILED 0x08 |
3b9f9a1c | 48 | #define IFA_F_HOMEADDRESS 0x10 |
1823730f TG |
49 | #define IFA_F_DEPRECATED 0x20 |
50 | #define IFA_F_TENTATIVE 0x40 | |
51 | #define IFA_F_PERMANENT 0x80 | |
53bd6749 | 52 | #define IFA_F_MANAGETEMPADDR 0x100 |
761aac73 | 53 | #define IFA_F_NOPREFIXROUTE 0x200 |
93a714d6 | 54 | #define IFA_F_MCAUTOJOIN 0x400 |
64236f3f | 55 | #define IFA_F_STABLE_PRIVACY 0x800 |
1823730f | 56 | |
d94d9fee | 57 | struct ifa_cacheinfo { |
1823730f TG |
58 | __u32 ifa_prefered; |
59 | __u32 ifa_valid; | |
60 | __u32 cstamp; /* created timestamp, hundredths of seconds */ | |
61 | __u32 tstamp; /* updated timestamp, hundredths of seconds */ | |
62 | }; | |
63 | ||
d3dcc077 DM |
64 | /* backwards compatibility for userspace */ |
65 | #ifndef __KERNEL__ | |
66 | #define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) | |
67 | #define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) | |
68 | #endif | |
69 | ||
1823730f | 70 | #endif |