| 1 | #ifndef __LINUX_IF_ADDR_H |
| 2 | #define __LINUX_IF_ADDR_H |
| 3 | |
| 4 | #include <linux/netlink.h> |
| 5 | |
| 6 | struct ifaddrmsg |
| 7 | { |
| 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 | { |
| 24 | IFA_UNSPEC, |
| 25 | IFA_ADDRESS, |
| 26 | IFA_LOCAL, |
| 27 | IFA_LABEL, |
| 28 | IFA_BROADCAST, |
| 29 | IFA_ANYCAST, |
| 30 | IFA_CACHEINFO, |
| 31 | IFA_MULTICAST, |
| 32 | __IFA_MAX, |
| 33 | }; |
| 34 | |
| 35 | #define IFA_MAX (__IFA_MAX - 1) |
| 36 | |
| 37 | /* ifa_flags */ |
| 38 | #define IFA_F_SECONDARY 0x01 |
| 39 | #define IFA_F_TEMPORARY IFA_F_SECONDARY |
| 40 | |
| 41 | #define IFA_F_NODAD 0x02 |
| 42 | #define IFA_F_OPTIMISTIC 0x04 |
| 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 | { |
| 50 | __u32 ifa_prefered; |
| 51 | __u32 ifa_valid; |
| 52 | __u32 cstamp; /* created timestamp, hundredths of seconds */ |
| 53 | __u32 tstamp; /* updated timestamp, hundredths of seconds */ |
| 54 | }; |
| 55 | |
| 56 | /* backwards compatibility for userspace */ |
| 57 | #ifndef __KERNEL__ |
| 58 | #define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) |
| 59 | #define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) |
| 60 | #endif |
| 61 | |
| 62 | #endif |
| 63 | |
