about summary refs log tree commit diff
path: root/inet/netinet/icmp6.h
blob: ef85269117fe1dfc375a780b0458fdb9172f1538 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#ifndef _NETINET_ICMP6_H
#define _NETINET_ICMP6_H 1

#include <sys/types.h>

#define ICMPV6_FILTER 1

#define ICMPV6_FILTER_BLOCK		1
#define ICMPV6_FILTER_PASS		2
#define ICMPV6_FILTER_BLOCKOTHERS	3
#define ICMPV6_FILTER_PASSONLY		4

struct icmpv6_filter
  {
    u_int32_t data[8];
  };

struct icmpv6hdr
  {
    u_int8_t icmpv6_type;   /* type field */
    u_int8_t icmpv6_code;   /* code field */
    u_int16_t icmpv6_cksum;  /* checksum field */
    union
      {
	u_int32_t un_data32[1]; /* type-specific field */
	u_int16_t un_data16[2]; /* type-specific field */
	u_int8_t un_data8[4];  /* type-specific field */
      } icmpv6_dataun;
  };

#define icmpv6_data32    icmpv6_dataun.un_data32
#define icmpv6_data16    icmpv6_dataun.un_data16
#define icmpv6_data8     icmpv6_dataun.un_data8
#define icmpv6_pptr      icmpv6_data32[0]  /* parameter prob */
#define icmpv6_mtu       icmpv6_data32[0]  /* packet too big */
#define icmpv6_id        icmpv6_data16[0]  /* echo request/reply */
#define icmpv6_seq       icmpv6_data16[1]  /* echo request/reply */
#define icmpv6_maxdelay  icmpv6_data16[0]  /* mcast group membership */

#define ICMPV6_DEST_UNREACH             1
#define ICMPV6_PACKET_TOOBIG            2
#define ICMPV6_TIME_EXCEEDED            3
#define ICMPV6_PARAMETER_PROBLEM        4
#define ICMPV6_INFOMSG_MASK             128 /* message is info if bit set */
#define ICMPV6_ECHOREQUEST              128
#define ICMPV6_ECHOREPLY                129
#define ICMPV6_MGM_QUERY                130
#define ICMPV6_MGM_REPORT               131
#define ICMPV6_MGM_REDUCTION            132

#define ICMPV6_DEST_UNREACH_NOROUTE	  0
#define ICMPV6_DEST_UNREACH_ADMIN	  1 /* administratively prohibited */
#define ICMPV6_DEST_UNREACH_NOTNEIGHBOR   2 /* not a neighbor (and must be) */
#define ICMPV6_DEST_UNREACH_ADDR          3
#define ICMPV6_DEST_UNREACH_NOPORT        4
#define ICMPV6_TIME_EXCEED_HOPS           0 /* Hop Limit == 0 in transit */
#define ICMPV6_TIME_EXCEED_REASSEMBLY     1 /* Reassembly time out */
#define ICMPV6_PARAMPROB_HEADER           0 /* erroneous header field */
#define ICMPV6_PARAMPROB_NEXTHEADER       1 /* unrecognized Next Header */
#define ICMPV6_PARAMPROB_OPTION           2 /* unrecognized option */

#if defined(__OPTIMIZE__)
#include <asm/bitops.h>

#define ICMPV6_FILTER_WILLPASS(type, filterp) \
	(test_bit (type, filterp) == 0)

#define ICMPV6_FILTER_WILLBLOCK(type, filterp) \
	test_bit (type, filterp)

#define ICMPV6_FILTER_SETPASS(type, filterp) \
	clear_bit (type & 0x1f, &((filterp)->data[type >> 5]))

#define ICMPV6_FILTER_SETBLOCK(type, filterp) \
	set_bit (type & 0x1f, &((filterp)->data[type >> 5]))
#else
#define ICMPV6_FILTER_WILLPASS(type, filterp) \
	((((filterp)->data[(type) >> 5]) & (1 << ((type) & 31))) == 0)

#define ICMPV6_FILTER_WILLBLOCK(type, filterp) \
	((((filterp)->data[(type) >> 5]) & (1 << ((type) & 31))) != 0)

#define ICMPV6_FILTER_SETPASS(type, filterp) \
	((((filterp)->data[(type) >> 5]) &= ~(1 << ((type) & 31))))

#define ICMPV6_FILTER_SETBLOCK(type, filterp) \
	((((filterp)->data[(type) >> 5]) |=  (1 << ((type) & 31))))
#endif

#define ICMPV6_FILTER_SETPASSALL(filterp) \
	memset (filterp, 0, sizeof (struct icmpv6_filter));

#define ICMPV6_FILTER_SETBLOCKALL(filterp) \
	memset (filterp, 0xFF, sizeof (struct icmpv6_filter));

#define ND6_ROUTER_SOLICITATION		133
#define ND6_ROUTER_ADVERTISEMENT	134
#define ND6_NEIGHBOR_SOLICITATION	135
#define ND6_NEIGHBOR_ADVERTISEMENT	136
#define ND6_REDIRECT			137

enum nd6_option
  {
    ND6_OPT_SOURCE_LINKADDR=1,
    ND6_OPT_TARGET_LINKADDR=2,
    ND6_OPT_PREFIX_INFORMATION=3,
    ND6_OPT_REDIRECTED_HEADER=4,
    ND6_OPT_MTU=5,
    ND6_OPT_ENDOFLIST=256
  };

struct nd6_router_solicit      /* router solicitation */
  {
    struct icmpv6hdr		rsol_hdr;
  };

#define rsol_type		rsol_hdr.icmpv6_type
#define rsol_code		rsol_hdr.icmpv6_code
#define rsol_cksum		rsol_hdr.icmpv6_cksum
#define rsol_reserved		rsol_hdr.icmpv6_data32[0]

struct nd6_router_advert
  {
    struct icmpv6hdr	radv_hdr;
    u_int32_t		radv_reachable;	 /* reachable time	*/
    u_int32_t		radv_retransmit; /* reachable retransmit time */
  };

#define radv_type		radv_hdr.icmpv6_type
#define radv_code		radv_hdr.icmpv6_code
#define radv_cksum		radv_hdr.icmpv6_cksum
#define radv_maxhoplimit	radv_hdr.icmpv6_data8[0]
#define radv_m_o_res		radv_hdr.icmpv6_data8[1]
#define ND6_RADV_M_BIT		0x80
#define ND6_RADV_O_BIT		0x40
#define radv_router_lifetime	radv_hdr.icmpv6_data16[1]

struct nd6_nsolicitation 	/* neighbor solicitation */
  {
    struct icmpv6hdr	nsol6_hdr;
    struct in6_addr	nsol6_target;
  };

struct nd6_nadvertisement 	/* neighbor advertisement */
  {
    struct icmpv6hdr	nadv6_hdr;
    struct in6_addr	nadv6_target;
  };

#define nadv6_flags			nadv6_hdr.icmpv6_data32[0]
#define ND6_NADVERFLAG_ISROUTER		0x80
#define ND6_NADVERFLAG_SOLICITED	0x40
#define ND6_NADVERFLAG_OVERRIDE		0x20

struct nd6_redirect            /* redirect */
  {
    struct icmpv6hdr	redirect_hdr;
    struct in6_addr	redirect_target;
    struct in6_addr	redirect_destination;
  };

struct nd6_opt_prefix_info     /* prefix information */
  {
    u_int8_t		opt_type;
    u_int8_t		opt_length;
    u_int8_t		opt_prefix_length;
    u_int8_t		opt_l_a_res;
    u_int32_t		opt_valid_life;
    u_int32_t		opt_preferred_life;
    u_int32_t		opt_reserved2;
    struct in6_addr	opt_prefix;
  };

#define ND6_OPT_PI_L_BIT	0x80
#define ND6_OPT_PI_A_BIT	0x40

struct nd6_opt_mtu 		/* MTU option */
  {
    u_int8_t		opt_type;
    u_int8_t		opt_length;
    u_int16_t		opt_reserved;
    u_int32_t		opt_mtu;
  };

#endif /* _NETINET6_ICMPV6_H */