LXR linux/include/uapi/linux/if

   1#ifndef __LINUX_IF_ADDR_H
   2#define __LINUX_IF_ADDR_H
   3
   4#include <linux/types.h>
   5#include <linux/netlink.h>
   6
   7struct 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 * IFA_FLAGS is a u32 attribute that extends the u8 field ifa_flags.
  23 * If present, the value from struct ifaddrmsg will be ignored.
  24 */
  25enum {
  26        IFA_UNSPEC,
  27        IFA_ADDRESS,
  28        IFA_LOCAL,
  29        IFA_LABEL,
  30        IFA_BROADCAST,
  31        IFA_ANYCAST,
  32        IFA_CACHEINFO,
  33        IFA_MULTICAST,
  34        IFA_FLAGS,
  35        __IFA_MAX,
  36};
  37
  38#define IFA_MAX (__IFA_MAX - 1)
  39
  40/* ifa_flags */
  41#define IFA_F_SECONDARY         0x01
  42#define IFA_F_TEMPORARY         IFA_F_SECONDARY
  43
  44#define IFA_F_NODAD             0x02
  45#define IFA_F_OPTIMISTIC        0x04
  46#define IFA_F_DADFAILED         0x08
  47#define IFA_F_HOMEADDRESS       0x10
  48#define IFA_F_DEPRECATED        0x20
  49#define IFA_F_TENTATIVE         0x40
  50#define IFA_F_PERMANENT         0x80
  51#define IFA_F_MANAGETEMPADDR    0x100
  52#define IFA_F_NOPREFIXROUTE     0x200
  53#define IFA_F_MCAUTOJOIN        0x400
  54#define IFA_F_STABLE_PRIVACY    0x800
  55
  56struct ifa_cacheinfo {
  57        __u32   ifa_prefered;
  58        __u32   ifa_valid;
  59        __u32   cstamp; /* created timestamp, hundredths of seconds */
  60        __u32   tstamp; /* updated timestamp, hundredths of seconds */
  61};
  62
  63/* backwards compatibility for userspace */
  64#ifndef __KERNEL__
  65#define IFA_RTA(r)  ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
  66#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg))
  67#endif
  68
  69#endif
  70