include/linux/pim.h

   1 #ifndef __LINUX_PIM_H
   2 #define __LINUX_PIM_H
   3
   4 #include <asm/byteorder.h>
   5
   6 #ifndef __KERNEL__
   7 struct pim {
   8 #if defined(__LITTLE_ENDIAN_BITFIELD)
   9         __u8    pim_type:4,             /* PIM message type */
  10                 pim_ver:4;              /* PIM version */
  11 #elif defined(__BIG_ENDIAN_BITFIELD)
  12         __u8    pim_ver:4;              /* PIM version */
  13                 pim_type:4;             /* PIM message type */
  14 #endif
  15         __u8    pim_rsv;                /* Reserved */
  16         __be16  pim_cksum;              /* Checksum */
  17 };
  18
  19 #define PIM_MINLEN              8
  20 #endif
  21
  22 /* Message types - V1 */
  23 #define PIM_V1_VERSION          __constant_htonl(0x10000000)
  24 #define PIM_V1_REGISTER         1
  25
  26 /* Message types - V2 */
  27 #define PIM_VERSION             2
  28 #define PIM_REGISTER            1
  29
  30 #if defined(__KERNEL__)
  31 #define PIM_NULL_REGISTER       __constant_htonl(0x40000000)
  32
  33 /* PIMv2 register message header layout (ietf-draft-idmr-pimvsm-v2-00.ps */
  34 struct pimreghdr
  35 {
  36         __u8    type;
  37         __u8    reserved;
  38         __be16  csum;
  39         __be32  flags;
  40 };
  41
  42 struct sk_buff;
  43 extern int pim_rcv_v1(struct sk_buff *);
  44 #endif
  45 #endif