release/src-rt-6.x/include/proto/bcmipv6.h

   1 /*
   2  * Copyright (C) 2011, Broadcom Corporation. All Rights Reserved.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  *
  16  * Fundamental constants relating to Neighbor Discovery Protocol
  17  *
  18  * $Id: bcmipv6.h 305568 2011-12-29 20:21:17Z $
  19  */
  20
  21 #ifndef _bcmipv6_h_
  22 #define _bcmipv6_h_
  23
  24 #ifndef _TYPEDEFS_H_
  25 #include <typedefs.h>
  26 #endif
  27
  28 /* This marks the start of a packed structure section. */
  29 #include <packed_section_start.h>
  30
  31 #define ICMPV6_HEADER_TYPE      0x3A
  32 #define ICMPV6_PKT_TYPE_NS      135
  33 #define ICMPV6_PKT_TYPE_NA      136
  34
  35 #define ICMPV6_ND_OPT_TYPE_TARGET_MAC   2
  36 #define ICMPV6_ND_OPT_TYPE_SRC_MAC              1
  37
  38 #define IPV6_VERSION    6
  39 #define IPV6_HOP_LIMIT  255
  40
  41 #define IPV6_ADDR_NULL(a)       ((a[0] | a[1] | a[2] | a[3] | a[4] | \
  42                                                          a[5] | a[6] | a[7] | a[8] | a[9] | \
  43                                                          a[10] | a[11] | a[12] | a[13] | \
  44                                                          a[14] | a[15]) == 0)
  45
  46 /* IPV6 address */
  47 BWL_PRE_PACKED_STRUCT struct ipv6_addr {
  48                 uint8           addr[16];
  49 } BWL_POST_PACKED_STRUCT;
  50
  51 #ifndef IL_BIGENDIAN
  52
  53 /* ICMPV6 Header */
  54 BWL_PRE_PACKED_STRUCT struct icmp6_hdr {
  55         uint8   icmp6_type;
  56         uint8   icmp6_code;
  57         uint16  icmp6_cksum;
  58         BWL_PRE_PACKED_STRUCT union {
  59                 uint32 reserved;
  60                 BWL_PRE_PACKED_STRUCT struct nd_advt {
  61                         uint32  reserved1:5,
  62                                 override:1,
  63                                 solicited:1,
  64                                 router:1,
  65                                 reserved2:24;
  66                 } BWL_POST_PACKED_STRUCT nd_advt;
  67         } BWL_POST_PACKED_STRUCT opt;
  68 } BWL_POST_PACKED_STRUCT;
  69
  70 /* Ipv6 Header Format */
  71 BWL_PRE_PACKED_STRUCT struct ipv6_hdr {
  72         uint8   priority:4,
  73                 version:4;
  74         uint8   flow_lbl[3];
  75         uint16  payload_len;
  76         uint8   nexthdr;
  77         uint8   hop_limit;
  78         struct  ipv6_addr       saddr;
  79         struct  ipv6_addr       daddr;
  80 } BWL_POST_PACKED_STRUCT;
  81
  82 /* Neighbor Advertisement/Solicitation Packet Structure */
  83 BWL_PRE_PACKED_STRUCT struct nd_msg {
  84         struct icmp6_hdr        icmph;
  85         struct ipv6_addr target;
  86 } BWL_POST_PACKED_STRUCT;
  87
  88
  89 /* Neighibor Solicitation/Advertisement Optional Structure */
  90 BWL_PRE_PACKED_STRUCT struct nd_msg_opt {
  91         uint8 type;
  92         uint8 len;
  93         uint8 mac_addr[ETHER_ADDR_LEN];
  94 } BWL_POST_PACKED_STRUCT;
  95
  96 #endif /* IL_BIGENDIAN */
  97
  98 /* This marks the end of a packed structure section. */
  99 #include <packed_section_end.h>
 100
 101 #endif  /* !defined(_bcmipv6_h_) */