16f52b16cSGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2607ca46eSDavid Howells #ifndef __LINUX_IF_ADDR_H 3607ca46eSDavid Howells #define __LINUX_IF_ADDR_H 4607ca46eSDavid Howells 5607ca46eSDavid Howells #include <linux/types.h> 6607ca46eSDavid Howells #include <linux/netlink.h> 7607ca46eSDavid Howells 8607ca46eSDavid Howells struct ifaddrmsg { 9607ca46eSDavid Howells __u8 ifa_family; 10607ca46eSDavid Howells __u8 ifa_prefixlen; /* The prefix length */ 11607ca46eSDavid Howells __u8 ifa_flags; /* Flags */ 12607ca46eSDavid Howells __u8 ifa_scope; /* Address scope */ 13607ca46eSDavid Howells __u32 ifa_index; /* Link index */ 14607ca46eSDavid Howells }; 15607ca46eSDavid Howells 16607ca46eSDavid Howells /* 17607ca46eSDavid Howells * Important comment: 18607ca46eSDavid Howells * IFA_ADDRESS is prefix address, rather than local interface address. 19607ca46eSDavid Howells * It makes no difference for normally configured broadcast interfaces, 20607ca46eSDavid Howells * but for point-to-point IFA_ADDRESS is DESTINATION address, 21607ca46eSDavid Howells * local address is supplied in IFA_LOCAL attribute. 22479840ffSJiri Pirko * 23479840ffSJiri Pirko * IFA_FLAGS is a u32 attribute that extends the u8 field ifa_flags. 24479840ffSJiri Pirko * If present, the value from struct ifaddrmsg will be ignored. 25607ca46eSDavid Howells */ 26607ca46eSDavid Howells enum { 27607ca46eSDavid Howells IFA_UNSPEC, 28607ca46eSDavid Howells IFA_ADDRESS, 29607ca46eSDavid Howells IFA_LOCAL, 30607ca46eSDavid Howells IFA_LABEL, 31607ca46eSDavid Howells IFA_BROADCAST, 32607ca46eSDavid Howells IFA_ANYCAST, 33607ca46eSDavid Howells IFA_CACHEINFO, 34607ca46eSDavid Howells IFA_MULTICAST, 35479840ffSJiri Pirko IFA_FLAGS, 36620dee94SDavid Ahern IFA_RT_PRIORITY, /* u32, priority/metric for prefix route */ 379f3c057cSChristian Brauner IFA_TARGET_NETNSID, 38*47f0bd50SJacques de Laval IFA_PROTO, /* u8, address protocol */ 39607ca46eSDavid Howells __IFA_MAX, 40607ca46eSDavid Howells }; 41607ca46eSDavid Howells 42607ca46eSDavid Howells #define IFA_MAX (__IFA_MAX - 1) 43607ca46eSDavid Howells 44607ca46eSDavid Howells /* ifa_flags */ 45607ca46eSDavid Howells #define IFA_F_SECONDARY 0x01 46607ca46eSDavid Howells #define IFA_F_TEMPORARY IFA_F_SECONDARY 47607ca46eSDavid Howells 48607ca46eSDavid Howells #define IFA_F_NODAD 0x02 49607ca46eSDavid Howells #define IFA_F_OPTIMISTIC 0x04 50607ca46eSDavid Howells #define IFA_F_DADFAILED 0x08 51607ca46eSDavid Howells #define IFA_F_HOMEADDRESS 0x10 52607ca46eSDavid Howells #define IFA_F_DEPRECATED 0x20 53607ca46eSDavid Howells #define IFA_F_TENTATIVE 0x40 54607ca46eSDavid Howells #define IFA_F_PERMANENT 0x80 5553bd6749SJiri Pirko #define IFA_F_MANAGETEMPADDR 0x100 56761aac73SThomas Haller #define IFA_F_NOPREFIXROUTE 0x200 5793a714d6SMadhu Challa #define IFA_F_MCAUTOJOIN 0x400 5864236f3fSHannes Frederic Sowa #define IFA_F_STABLE_PRIVACY 0x800 59607ca46eSDavid Howells 60607ca46eSDavid Howells struct ifa_cacheinfo { 61607ca46eSDavid Howells __u32 ifa_prefered; 62607ca46eSDavid Howells __u32 ifa_valid; 63607ca46eSDavid Howells __u32 cstamp; /* created timestamp, hundredths of seconds */ 64607ca46eSDavid Howells __u32 tstamp; /* updated timestamp, hundredths of seconds */ 65607ca46eSDavid Howells }; 66607ca46eSDavid Howells 67607ca46eSDavid Howells /* backwards compatibility for userspace */ 68607ca46eSDavid Howells #ifndef __KERNEL__ 69607ca46eSDavid Howells #define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) 70607ca46eSDavid Howells #define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) 71607ca46eSDavid Howells #endif 72607ca46eSDavid Howells 73*47f0bd50SJacques de Laval /* ifa_proto */ 74*47f0bd50SJacques de Laval #define IFAPROT_UNSPEC 0 75*47f0bd50SJacques de Laval #define IFAPROT_KERNEL_LO 1 /* loopback */ 76*47f0bd50SJacques de Laval #define IFAPROT_KERNEL_RA 2 /* set by kernel from router announcement */ 77*47f0bd50SJacques de Laval #define IFAPROT_KERNEL_LL 3 /* link-local set by kernel */ 78*47f0bd50SJacques de Laval 79607ca46eSDavid Howells #endif 80