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 #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 60 #endif 61
