headers/posix/net/if_dl.h

   1 /*
   2  * Copyright 2006-2012 Haiku, Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef _NET_IF_DL_H
   6 #define _NET_IF_DL_H
   7
   8
   9 #include <stdint.h>
  10
  11
  12 /* Link level sockaddr structure */
  13 struct sockaddr_dl {
  14         uint8_t         sdl_len;                /* Total length of sockaddr */
  15         uint8_t         sdl_family;             /* AF_LINK */
  16         uint16_t        sdl_e_type;             /* link level frame type */
  17         uint32_t        sdl_index;              /* index for interface */
  18         uint8_t         sdl_type;               /* interface type */
  19         uint8_t         sdl_nlen;               /* interface name length (not terminated with a null byte) */
  20         uint8_t         sdl_alen;               /* link level address length */
  21         uint8_t         sdl_slen;               /* link layer selector length */
  22         uint8_t         sdl_data[20];   /* minimum work area, can be larger */
  23 };
  24
  25 /* Macro to get a pointer to the link level address */
  26 #define LLADDR(s)       ((uint8_t *)((s)->sdl_data + (s)->sdl_nlen))
  27
  28 #endif  /* _NET_IF_DL_H */