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 { 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. 22 */ 23 enum 24 { 25 IFA_UNSPEC, 26 IFA_ADDRESS, 27 IFA_LOCAL, 28 IFA_LABEL, 29 IFA_BROADCAST, 30 IFA_ANYCAST, 31 IFA_CACHEINFO, 32 IFA_MULTICAST, 33 __IFA_MAX, 34 }; 35 36 #define IFA_MAX (__IFA_MAX - 1) 37 38 /* ifa_flags */ 39 #define IFA_F_SECONDARY 0x01 40 #define IFA_F_TEMPORARY IFA_F_SECONDARY 41 42 #define IFA_F_NODAD 0x02 43 #define IFA_F_OPTIMISTIC 0x04 44 #define IFA_F_DADFAILED 0x08 45 #define IFA_F_HOMEADDRESS 0x10 46 #define IFA_F_DEPRECATED 0x20 47 #define IFA_F_TENTATIVE 0x40 48 #define IFA_F_PERMANENT 0x80 49 50 struct ifa_cacheinfo 51 { 52 __u32 ifa_prefered; 53 __u32 ifa_valid; 54 __u32 cstamp; /* created timestamp, hundredths of seconds */ 55 __u32 tstamp; /* updated timestamp, hundredths of seconds */ 56 }; 57 58 /* backwards compatibility for userspace */ 59 #ifndef __KERNEL__ 60 #define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) 61 #define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) 62 #endif 63 64 #endif 65
