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ba914908 | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
ead2ba70 SH |
2 | #ifndef __LINUX_IF_ADDR_H |
3 | #define __LINUX_IF_ADDR_H | |
4 | ||
67881151 | 5 | #include <linux/types.h> |
ead2ba70 SH |
6 | #include <linux/netlink.h> |
7 | ||
ab322673 | 8 | struct ifaddrmsg { |
ead2ba70 SH |
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. | |
ec69a50c SH |
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. | |
ead2ba70 | 25 | */ |
ab322673 | 26 | enum { |
ead2ba70 SH |
27 | IFA_UNSPEC, |
28 | IFA_ADDRESS, | |
29 | IFA_LOCAL, | |
30 | IFA_LABEL, | |
31 | IFA_BROADCAST, | |
32 | IFA_ANYCAST, | |
33 | IFA_CACHEINFO, | |
34 | IFA_MULTICAST, | |
ec69a50c | 35 | IFA_FLAGS, |
57ac202c | 36 | IFA_RT_PRIORITY, /* u32, priority/metric for prefix route */ |
d9c0be4e | 37 | IFA_TARGET_NETNSID, |
ead2ba70 SH |
38 | __IFA_MAX, |
39 | }; | |
40 | ||
41 | #define IFA_MAX (__IFA_MAX - 1) | |
42 | ||
43 | /* ifa_flags */ | |
44 | #define IFA_F_SECONDARY 0x01 | |
45 | #define IFA_F_TEMPORARY IFA_F_SECONDARY | |
46 | ||
47 | #define IFA_F_NODAD 0x02 | |
de3d12f4 | 48 | #define IFA_F_OPTIMISTIC 0x04 |
8007bfb5 | 49 | #define IFA_F_DADFAILED 0x08 |
ead2ba70 SH |
50 | #define IFA_F_HOMEADDRESS 0x10 |
51 | #define IFA_F_DEPRECATED 0x20 | |
52 | #define IFA_F_TENTATIVE 0x40 | |
53 | #define IFA_F_PERMANENT 0x80 | |
ec69a50c | 54 | #define IFA_F_MANAGETEMPADDR 0x100 |
3ba9ccda | 55 | #define IFA_F_NOPREFIXROUTE 0x200 |
61333d24 | 56 | #define IFA_F_MCAUTOJOIN 0x400 |
cbdc3ed8 | 57 | #define IFA_F_STABLE_PRIVACY 0x800 |
ead2ba70 | 58 | |
ab322673 | 59 | struct ifa_cacheinfo { |
ead2ba70 SH |
60 | __u32 ifa_prefered; |
61 | __u32 ifa_valid; | |
62 | __u32 cstamp; /* created timestamp, hundredths of seconds */ | |
63 | __u32 tstamp; /* updated timestamp, hundredths of seconds */ | |
64 | }; | |
65 | ||
5a8ba228 | 66 | /* backwards compatibility for userspace */ |
5a8ba228 SH |
67 | #define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) |
68 | #define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) | |
5a8ba228 | 69 | |
ead2ba70 | 70 | #endif |