Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1#ifndef _LINUX_ICMPV6_H
2#define _LINUX_ICMPV6_H
3
4#include <asm/byteorder.h>
5
6struct icmp6hdr {
7
8 __u8 icmp6_type;
9 __u8 icmp6_code;
10 __sum16 icmp6_cksum;
11
12
13 union {
14 __be32 un_data32[1];
15 __be16 un_data16[2];
16 __u8 un_data8[4];
17
18 struct icmpv6_echo {
19 __be16 identifier;
20 __be16 sequence;
21 } u_echo;
22
23 struct icmpv6_nd_advt {
24#if defined(__LITTLE_ENDIAN_BITFIELD)
25 __u32 reserved:5,
26 override:1,
27 solicited:1,
28 router:1,
29 reserved2:24;
30#elif defined(__BIG_ENDIAN_BITFIELD)
31 __u32 router:1,
32 solicited:1,
33 override:1,
34 reserved:29;
35#else
36#error "Please fix <asm/byteorder.h>"
37#endif
38 } u_nd_advt;
39
40 struct icmpv6_nd_ra {
41 __u8 hop_limit;
42#if defined(__LITTLE_ENDIAN_BITFIELD)
43 __u8 reserved:3,
44 router_pref:2,
45 home_agent:1,
46 other:1,
47 managed:1;
48
49#elif defined(__BIG_ENDIAN_BITFIELD)
50 __u8 managed:1,
51 other:1,
52 home_agent:1,
53 router_pref:2,
54 reserved:3;
55#else
56#error "Please fix <asm/byteorder.h>"
57#endif
58 __be16 rt_lifetime;
59 } u_nd_ra;
60
61 } icmp6_dataun;
62
63#define icmp6_identifier icmp6_dataun.u_echo.identifier
64#define icmp6_sequence icmp6_dataun.u_echo.sequence
65#define icmp6_pointer icmp6_dataun.un_data32[0]
66#define icmp6_mtu icmp6_dataun.un_data32[0]
67#define icmp6_unused icmp6_dataun.un_data32[0]
68#define icmp6_maxdelay icmp6_dataun.un_data16[0]
69#define icmp6_router icmp6_dataun.u_nd_advt.router
70#define icmp6_solicited icmp6_dataun.u_nd_advt.solicited
71#define icmp6_override icmp6_dataun.u_nd_advt.override
72#define icmp6_ndiscreserved icmp6_dataun.u_nd_advt.reserved
73#define icmp6_hop_limit icmp6_dataun.u_nd_ra.hop_limit
74#define icmp6_addrconf_managed icmp6_dataun.u_nd_ra.managed
75#define icmp6_addrconf_other icmp6_dataun.u_nd_ra.other
76#define icmp6_rt_lifetime icmp6_dataun.u_nd_ra.rt_lifetime
77#define icmp6_router_pref icmp6_dataun.u_nd_ra.router_pref
78};
79
80#ifdef __KERNEL__
81#include <linux/skbuff.h>
82
83static inline struct icmp6hdr *icmp6_hdr(const struct sk_buff *skb)
84{
85 return (struct icmp6hdr *)skb_transport_header(skb);
86}
87#endif
88
89#define ICMPV6_ROUTER_PREF_LOW 0x3
90#define ICMPV6_ROUTER_PREF_MEDIUM 0x0
91#define ICMPV6_ROUTER_PREF_HIGH 0x1
92#define ICMPV6_ROUTER_PREF_INVALID 0x2
93
94#define ICMPV6_DEST_UNREACH 1
95#define ICMPV6_PKT_TOOBIG 2
96#define ICMPV6_TIME_EXCEED 3
97#define ICMPV6_PARAMPROB 4
98
99#define ICMPV6_INFOMSG_MASK 0x80
100
101#define ICMPV6_ECHO_REQUEST 128
102#define ICMPV6_ECHO_REPLY 129
103#define ICMPV6_MGM_QUERY 130
104#define ICMPV6_MGM_REPORT 131
105#define ICMPV6_MGM_REDUCTION 132
106
107#define ICMPV6_NI_QUERY 139
108#define ICMPV6_NI_REPLY 140
109
110#define ICMPV6_MLD2_REPORT 143
111
112#define ICMPV6_DHAAD_REQUEST 144
113#define ICMPV6_DHAAD_REPLY 145
114#define ICMPV6_MOBILE_PREFIX_SOL 146
115#define ICMPV6_MOBILE_PREFIX_ADV 147
116
117/*
118 * Codes for Destination Unreachable
119 */
120#define ICMPV6_NOROUTE 0
121#define ICMPV6_ADM_PROHIBITED 1
122#define ICMPV6_NOT_NEIGHBOUR 2
123#define ICMPV6_ADDR_UNREACH 3
124#define ICMPV6_PORT_UNREACH 4
125
126/*
127 * Codes for Time Exceeded
128 */
129#define ICMPV6_EXC_HOPLIMIT 0
130#define ICMPV6_EXC_FRAGTIME 1
131
132/*
133 * Codes for Parameter Problem
134 */
135#define ICMPV6_HDR_FIELD 0
136#define ICMPV6_UNK_NEXTHDR 1
137#define ICMPV6_UNK_OPTION 2
138
139/*
140 * constants for (set|get)sockopt
141 */
142
143#define ICMPV6_FILTER 1
144
145/*
146 * ICMPV6 filter
147 */
148
149#define ICMPV6_FILTER_BLOCK 1
150#define ICMPV6_FILTER_PASS 2
151#define ICMPV6_FILTER_BLOCKOTHERS 3
152#define ICMPV6_FILTER_PASSONLY 4
153
154struct icmp6_filter {
155 __u32 data[8];
156};
157
158/*
159 * Definitions for MLDv2
160 */
161#define MLD2_MODE_IS_INCLUDE 1
162#define MLD2_MODE_IS_EXCLUDE 2
163#define MLD2_CHANGE_TO_INCLUDE 3
164#define MLD2_CHANGE_TO_EXCLUDE 4
165#define MLD2_ALLOW_NEW_SOURCES 5
166#define MLD2_BLOCK_OLD_SOURCES 6
167
168#define MLD2_ALL_MCR_INIT { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x16 } } }
169
170#ifdef __KERNEL__
171
172#include <linux/netdevice.h>
173#include <linux/skbuff.h>
174
175
176extern void icmpv6_send(struct sk_buff *skb,
177 int type, int code,
178 __u32 info,
179 struct net_device *dev);
180
181extern int icmpv6_init(void);
182extern int icmpv6_err_convert(int type, int code,
183 int *err);
184extern void icmpv6_cleanup(void);
185extern void icmpv6_param_prob(struct sk_buff *skb,
186 int code, int pos);
187
188struct flowi;
189struct in6_addr;
190extern void icmpv6_flow_init(struct sock *sk,
191 struct flowi *fl,
192 u8 type,
193 const struct in6_addr *saddr,
194 const struct in6_addr *daddr,
195 int oif);
196#endif
197
198#endif