release/src-rt-6.x.4708/include/proto/bcmipv6.h

   1 /*
   2  * Copyright (C) 2012, 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 352279 2012-08-22 07:21:57Z $
  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 #define IPV6_ADDR_LOCAL(a)      (((a[0] == 0xfe) && (a[1] & 0x80))? TRUE: FALSE)
  47
  48 /* IPV6 address */
  49 BWL_PRE_PACKED_STRUCT struct ipv6_addr {
  50                 uint8           addr[16];
  51 } BWL_POST_PACKED_STRUCT;
  52
  53 #ifndef IL_BIGENDIAN
  54
  55 /* ICMPV6 Header */
  56 BWL_PRE_PACKED_STRUCT struct icmp6_hdr {
  57         uint8   icmp6_type;
  58         uint8   icmp6_code;
  59         uint16  icmp6_cksum;
  60         BWL_PRE_PACKED_STRUCT union {
  61                 uint32 reserved;
  62                 BWL_PRE_PACKED_STRUCT struct nd_advt {
  63                         uint32  reserved1:5,
  64                                 override:1,
  65                                 solicited:1,
  66                                 router:1,
  67                                 reserved2:24;
  68                 } BWL_POST_PACKED_STRUCT nd_advt;
  69         } BWL_POST_PACKED_STRUCT opt;
  70 } BWL_POST_PACKED_STRUCT;
  71
  72 /* Ipv6 Header Format */
  73 BWL_PRE_PACKED_STRUCT struct ipv6_hdr {
  74         uint8   priority:4,
  75                 version:4;
  76         uint8   flow_lbl[3];
  77         uint16  payload_len;
  78         uint8   nexthdr;
  79         uint8   hop_limit;
  80         struct  ipv6_addr       saddr;
  81         struct  ipv6_addr       daddr;
  82 } BWL_POST_PACKED_STRUCT;
  83
  84 /* Neighbor Advertisement/Solicitation Packet Structure */
  85 BWL_PRE_PACKED_STRUCT struct nd_msg {
  86         struct icmp6_hdr        icmph;
  87         struct ipv6_addr target;
  88 } BWL_POST_PACKED_STRUCT;
  89
  90
  91 /* Neighibor Solicitation/Advertisement Optional Structure */
  92 BWL_PRE_PACKED_STRUCT struct nd_msg_opt {
  93         uint8 type;
  94         uint8 len;
  95         uint8 mac_addr[ETHER_ADDR_LEN];
  96 } BWL_POST_PACKED_STRUCT;
  97
  98 #endif /* IL_BIGENDIAN */
  99
 100 /* This marks the end of a packed structure section. */
 101 #include <packed_section_end.h>
 102
 103 #endif  /* !defined(_bcmipv6_h_) */