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 __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 IFA_UNSPEC, 24 IFA_ADDRESS, 25 IFA_LOCAL, 26 IFA_LABEL, 27 IFA_BROADCAST, 28 IFA_ANYCAST, 29 IFA_CACHEINFO, 30 IFA_MULTICAST, 31 __IFA_MAX, 32 }; 33 34 #define IFA_MAX (__IFA_MAX - 1) 35 36 /* ifa_flags */ 37 #define IFA_F_SECONDARY 0x01 38 #define IFA_F_TEMPORARY IFA_F_SECONDARY 39 40 #define IFA_F_NODAD 0x02 41 #define IFA_F_OPTIMISTIC 0x04 42 #define IFA_F_DADFAILED 0x08 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 __u32 ifa_prefered; 50 __u32 ifa_valid; 51 __u32 cstamp; /* created timestamp, hundredths of seconds */ 52 __u32 tstamp; /* updated timestamp, hundredths of seconds */ 53 }; 54 55 /* backwards compatibility for userspace */ 56 #ifndef __KERNEL__ 57 #define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) 58 #define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) 59 #endif 60 61 #endif 62