drivers/staging/rt3090/ipv6.h

   1 /*
   2  *************************************************************************
   3  * Ralink Tech Inc.
   4  * 5F., No.36, Taiyuan St., Jhubei City,
   5  * Hsinchu County 302,
   6  * Taiwan, R.O.C.
   7  *
   8  * (c) Copyright 2002-2007, Ralink Technology, Inc.
   9  *
  10  * This program is free software; you can redistribute it and/or modify  *
  11  * it under the terms of the GNU General Public License as published by  *
  12  * the Free Software Foundation; either version 2 of the License, or     *
  13  * (at your option) any later version.                                   *
  14  *                                                                       *
  15  * This program is distributed in the hope that it will be useful,       *
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  18  * GNU General Public License for more details.                          *
  19  *                                                                       *
  20  * You should have received a copy of the GNU General Public License     *
  21  * along with this program; if not, write to the                         *
  22  * Free Software Foundation, Inc.,                                       *
  23  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  24  *                                                                       *
  25  *************************************************************************
  26
  27     Module Name:
  28     ipv6.h
  29
  30     Abstract:
  31     Miniport generic portion header file
  32
  33     Revision History:
  34     Who         When          What
  35     --------    ----------    ----------------------------------------------
  36 */
  37
  38 #ifndef __IPV6_HDR_H_
  39 #define __IPV6_HDR_H_
  40
  41 #define IPV6_ADDR_LEN 16
  42 #define IPV6_HDR_LEN  40
  43
  44 // IPv6 address definition
  45 #define IPV6_LINK_LOCAL_ADDR_PREFIX             0xFE8
  46 #define IPV6_SITE_LOCAL_ADDR_PREFIX             0xFEC
  47 #define IPV6_LOCAL_ADDR_PREFIX                  0xFE8
  48 #define IPV6_MULTICAST_ADDR_PREFIX              0xFF
  49 #define IPV6_LOOPBACK_ADDR                              0x1
  50 #define IPV6_UNSPECIFIED_ADDR                   0x0
  51
  52 // defined as sequence in IPv6 header
  53 #define IPV6_NEXT_HEADER_HOP_BY_HOP             0x00    // 0
  54 #define IPV6_NEXT_HEADER_DESTINATION    0x3c    // 60
  55 #define IPV6_NEXT_HEADER_ROUTING                0x2b    // 43
  56 #define IPV6_NEXT_HEADER_FRAGMENT               0x2c    // 44
  57 #define IPV6_NEXT_HEADER_AUTHENTICATION 0x33    // 51
  58 #define IPV6_NEXT_HEADER_ENCAPSULATION  0x32    // 50, RFC-2406
  59 #define IPV6_NEXT_HEADER_NONE                   0x3b    // 59
  60
  61 #define IPV6_NEXT_HEADER_TCP                    0x06
  62 #define IPV6_NEXT_HEADER_UDP                    0x11
  63 #define IPV6_NEXT_HEADER_ICMPV6                 0x3a
  64
  65 // ICMPv6 msg type definition
  66 #define ICMPV6_MSG_TYPE_ROUTER_SOLICITATION                     0x85 // 133
  67 #define ROUTER_SOLICITATION_FIXED_LEN                           8
  68
  69 #define ICMPV6_MSG_TYPE_ROUTER_ADVERTISEMENT            0x86 // 134
  70 #define ROUTER_ADVERTISEMENT_FIXED_LEN                          16
  71
  72 #define ICMPV6_MSG_TYPE_NEIGHBOR_SOLICITATION           0x87 // 135
  73 #define NEIGHBOR_SOLICITATION_FIXED_LEN                         24
  74
  75 #define ICMPV6_MSG_TYPE_NEIGHBOR_ADVERTISEMENT          0x88 // 136
  76 #define NEIGHBOR_ADVERTISEMENT_FIXED_LEN                        24
  77
  78 #define ICMPV6_MSG_TYPE_REDIRECT                                        0x89 // 137
  79 #define REDIRECT_FIXED_LEN                                                      40
  80
  81 /* IPv6 Address related structures */
  82 typedef struct rt_ipv6_addr_
  83 {
  84         union
  85         {
  86                 UCHAR   ipv6Addr8[16];
  87                 USHORT  ipv6Addr16[8];
  88                 UINT32  ipv6Addr32[4];
  89         }addr;
  90 #define ipv6_addr                       addr.ipv6Addr8
  91 #define ipv6_addr16                     addr.ipv6Addr16
  92 #define ipv6_addr32                     addr.ipv6Addr32
  93 }RT_IPV6_ADDR, *PRT_IPV6_ADDR;
  94
  95
  96 #define PRINT_IPV6_ADDR(ipv6Addr)       \
  97         OS_NTOHS((ipv6Addr).ipv6_addr16[0]), \
  98         OS_NTOHS((ipv6Addr).ipv6_addr16[1]), \
  99         OS_NTOHS((ipv6Addr).ipv6_addr16[2]), \
 100         OS_NTOHS((ipv6Addr).ipv6_addr16[3]), \
 101         OS_NTOHS((ipv6Addr).ipv6_addr16[4]), \
 102         OS_NTOHS((ipv6Addr).ipv6_addr16[5]), \
 103         OS_NTOHS((ipv6Addr).ipv6_addr16[6]), \
 104         OS_NTOHS((ipv6Addr).ipv6_addr16[7])
 105
 106
 107 /*\14\14IPv6 Header related structures */
 108 typedef struct PACKED _rt_ipv6_hdr_
 109 {
 110         UINT32                  ver:4,
 111                                         trafficClass:8,
 112                                 flowLabel:20;
 113         USHORT                  payload_len;
 114         UCHAR                   nextHdr;
 115         UCHAR                   hopLimit;
 116         RT_IPV6_ADDR    srcAddr;
 117         RT_IPV6_ADDR    dstAddr;
 118 }RT_IPV6_HDR, *PRT_IPV6_HDR;
 119
 120
 121 typedef struct PACKED _rt_ipv6_ext_hdr_
 122 {
 123         UCHAR   nextProto; // Indicate the protocol type of next extension header.
 124         UCHAR   extHdrLen; // optional field for msg length of this extension header which didn't include the first "nextProto" field.
 125         UCHAR   octets[1]; // hook to extend header message body.
 126 }RT_IPV6_EXT_HDR, *PRT_IPV6_EXT_HDR;
 127
 128
 129 /* ICMPv6 related structures */
 130 typedef struct PACKED _rt_ipv6_icmpv6_hdr_
 131 {
 132         UCHAR   type;
 133         UCHAR   code;
 134         USHORT  chksum;
 135         UCHAR   octets[1]; //hook to extend header message body.
 136 }RT_ICMPV6_HDR, *PRT_ICMPV6_HDR;
 137
 138
 139 typedef struct PACKED _rt_icmp6_option_hdr_
 140 {
 141         UCHAR type;
 142         UCHAR len;
 143         UCHAR octet[1];
 144 }RT_ICMPV6_OPTION_HDR, *PRT_ICMPV6_OPTION_HDR;
 145
 146 typedef enum{
 147 // Defined ICMPv6 Option Types.
 148         TYPE_SRC_LL_ADDR        = 1,
 149         TYPE_TGT_LL_ADDR        = 2,
 150         TYPE_PREFIX_INFO                        = 3,
 151         TYPE_REDIRECTED_HDR                     = 4,
 152         TYPE_MTU                                        = 5,
 153 }ICMPV6_OPTIONS_TYPE_DEF;
 154
 155
 156 static inline BOOLEAN IPv6ExtHdrHandle(
 157         RT_IPV6_EXT_HDR         *pExtHdr,
 158         UCHAR                           *pProto,
 159         UINT32                          *pOffset)
 160 {
 161         UCHAR nextProto = 0xff;
 162         UINT32 extLen = 0;
 163         BOOLEAN status = TRUE;
 164
 165         //printk("%s(): parsing the Extension Header with Protocol(0x%x):\n", __FUNCTION__, *pProto);
 166         switch (*pProto)
 167         {
 168                 case IPV6_NEXT_HEADER_HOP_BY_HOP:
 169                         // IPv6ExtHopByHopHandle();
 170                         nextProto = pExtHdr->nextProto;
 171                         extLen = (pExtHdr->extHdrLen + 1) * 8;
 172                         break;
 173
 174                 case IPV6_NEXT_HEADER_DESTINATION:
 175                         // IPv6ExtDestHandle();
 176                         nextProto = pExtHdr->nextProto;
 177                         extLen = (pExtHdr->extHdrLen + 1) * 8;
 178                         break;
 179
 180                 case IPV6_NEXT_HEADER_ROUTING:
 181                         // IPv6ExtRoutingHandle();
 182                         nextProto = pExtHdr->nextProto;
 183                         extLen = (pExtHdr->extHdrLen + 1) * 8;
 184                         break;
 185
 186                 case IPV6_NEXT_HEADER_FRAGMENT:
 187                         // IPv6ExtFragmentHandle();
 188                         nextProto = pExtHdr->nextProto;
 189                         extLen = 8; // The Fragment header length is fixed to 8 bytes.
 190                         break;
 191
 192                 case IPV6_NEXT_HEADER_AUTHENTICATION:
 193                 //   IPV6_NEXT_HEADER_ENCAPSULATION:
 194                         /*
 195                                 TODO: Not support. For encryption issue.
 196                         */
 197                         nextProto = 0xFF;
 198                         status = FALSE;
 199                         break;
 200
 201                 default:
 202                         nextProto = 0xFF;
 203                         status = FALSE;
 204                         break;
 205         }
 206
 207         *pProto = nextProto;
 208         *pOffset += extLen;
 209         //printk("%s(): nextProto = 0x%x!, offset=0x%x!\n", __FUNCTION__, nextProto, offset);
 210
 211         return status;
 212
 213 }
 214
 215 #endif // __IPV6_HDR_H_ //