blob: e97a9accb71df31630d5c4d4455ef52bec535991 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * inet6 interface/address list definitions
3 * Linux INET6 implementation
4 *
5 * Authors:
6 * Pedro Roque <roque@di.fc.ul.pt>
7 *
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version
12 * 2 of the License, or (at your option) any later version.
13 */
14
15#ifndef _NET_IF_INET6_H
16#define _NET_IF_INET6_H
17
18#include <net/snmp.h>
19#include <linux/ipv6.h>
20
21/* inet6_dev.if_flags */
22
23#define IF_RA_OTHERCONF 0x80
24#define IF_RA_MANAGED 0x40
25#define IF_RA_RCVD 0x20
26#define IF_RS_SENT 0x10
27
28/* prefix flags */
29#define IF_PREFIX_ONLINK 0x01
30#define IF_PREFIX_AUTOCONF 0x02
31
32#ifdef __KERNEL__
33
34struct inet6_ifaddr
35{
36 struct in6_addr addr;
37 __u32 prefix_len;
38
39 __u32 valid_lft;
40 __u32 prefered_lft;
41 unsigned long cstamp; /* created timestamp */
42 unsigned long tstamp; /* updated timestamp */
43 atomic_t refcnt;
44 spinlock_t lock;
45
46 __u8 probes;
47 __u8 flags;
48
49 __u16 scope;
50
51 struct timer_list timer;
52
53 struct inet6_dev *idev;
54 struct rt6_info *rt;
55
56 struct inet6_ifaddr *lst_next; /* next addr in addr_lst */
57 struct inet6_ifaddr *if_next; /* next addr in inet6_dev */
58
59#ifdef CONFIG_IPV6_PRIVACY
60 struct inet6_ifaddr *tmp_next; /* next addr in tempaddr_lst */
61 struct inet6_ifaddr *ifpub;
62 int regen_count;
63#endif
64
65 int dead;
66};
67
68struct ip6_sf_socklist
69{
70 unsigned int sl_max;
71 unsigned int sl_count;
72 struct in6_addr sl_addr[0];
73};
74
75#define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \
76 (count) * sizeof(struct in6_addr))
77
78#define IP6_SFBLOCK 10 /* allocate this many at once */
79
80struct ipv6_mc_socklist
81{
82 struct in6_addr addr;
83 int ifindex;
84 struct ipv6_mc_socklist *next;
85 unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */
86 struct ip6_sf_socklist *sflist;
87};
88
89struct ip6_sf_list
90{
91 struct ip6_sf_list *sf_next;
92 struct in6_addr sf_addr;
93 unsigned long sf_count[2]; /* include/exclude counts */
94 unsigned char sf_gsresp; /* include in g & s response? */
95 unsigned char sf_oldin; /* change state */
96 unsigned char sf_crcount; /* retrans. left to send */
97};
98
99#define MAF_TIMER_RUNNING 0x01
100#define MAF_LAST_REPORTER 0x02
101#define MAF_LOADED 0x04
102#define MAF_NOREPORT 0x08
103#define MAF_GSQUERY 0x10
104
105struct ifmcaddr6
106{
107 struct in6_addr mca_addr;
108 struct inet6_dev *idev;
109 struct ifmcaddr6 *next;
110 struct ip6_sf_list *mca_sources;
111 struct ip6_sf_list *mca_tomb;
112 unsigned int mca_sfmode;
113 unsigned long mca_sfcount[2];
114 struct timer_list mca_timer;
115 unsigned mca_flags;
116 int mca_users;
117 atomic_t mca_refcnt;
118 spinlock_t mca_lock;
119 unsigned char mca_crcount;
120 unsigned long mca_cstamp;
121 unsigned long mca_tstamp;
122};
123
124/* Anycast stuff */
125
126struct ipv6_ac_socklist
127{
128 struct in6_addr acl_addr;
129 int acl_ifindex;
130 struct ipv6_ac_socklist *acl_next;
131};
132
133struct ifacaddr6
134{
135 struct in6_addr aca_addr;
136 struct inet6_dev *aca_idev;
137 struct rt6_info *aca_rt;
138 struct ifacaddr6 *aca_next;
139 int aca_users;
140 atomic_t aca_refcnt;
141 spinlock_t aca_lock;
142 unsigned long aca_cstamp;
143 unsigned long aca_tstamp;
144};
145
146#define IFA_HOST IPV6_ADDR_LOOPBACK
147#define IFA_LINK IPV6_ADDR_LINKLOCAL
148#define IFA_SITE IPV6_ADDR_SITELOCAL
149#define IFA_GLOBAL 0x0000U
150
151struct ipv6_devstat {
152 struct proc_dir_entry *proc_dir_entry;
153 DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6);
154};
155
156struct inet6_dev
157{
158 struct net_device *dev;
159
160 struct inet6_ifaddr *addr_list;
161
162 struct ifmcaddr6 *mc_list;
163 struct ifmcaddr6 *mc_tomb;
164 rwlock_t mc_lock;
165 unsigned long mc_v1_seen;
166 unsigned long mc_maxdelay;
167 unsigned char mc_qrv;
168 unsigned char mc_gq_running;
169 unsigned char mc_ifc_count;
170 struct timer_list mc_gq_timer; /* general query timer */
171 struct timer_list mc_ifc_timer; /* interface change timer */
172
173 struct ifacaddr6 *ac_list;
174 rwlock_t lock;
175 atomic_t refcnt;
176 __u32 if_flags;
177 int dead;
178
179#ifdef CONFIG_IPV6_PRIVACY
180 u8 rndid[8];
181 u8 entropy[8];
182 struct timer_list regen_timer;
183 struct inet6_ifaddr *tempaddr_list;
184 __u8 work_eui64[8];
185 __u8 work_digest[16];
186#endif
187
188 struct neigh_parms *nd_parms;
189 struct inet6_dev *next;
190 struct ipv6_devconf cnf;
191 struct ipv6_devstat stats;
192 unsigned long tstamp; /* ipv6InterfaceTable update timestamp */
193};
194
195extern struct ipv6_devconf ipv6_devconf;
196
197static inline void ipv6_eth_mc_map(struct in6_addr *addr, char *buf)
198{
199 /*
200 * +-------+-------+-------+-------+-------+-------+
201 * | 33 | 33 | DST13 | DST14 | DST15 | DST16 |
202 * +-------+-------+-------+-------+-------+-------+
203 */
204
205 buf[0]= 0x33;
206 buf[1]= 0x33;
207
208 memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
209}
210
211static inline void ipv6_tr_mc_map(struct in6_addr *addr, char *buf)
212{
213 /* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */
214
215 if (((addr->s6_addr[0] == 0xFF) &&
216 ((addr->s6_addr[1] == 0x01) || (addr->s6_addr[1] == 0x02)) &&
217 (addr->s6_addr16[1] == 0) &&
218 (addr->s6_addr32[1] == 0) &&
219 (addr->s6_addr32[2] == 0) &&
220 (addr->s6_addr16[6] == 0) &&
221 (addr->s6_addr[15] == 1)) ||
222 ((addr->s6_addr[0] == 0xFF) &&
223 (addr->s6_addr[1] == 0x02) &&
224 (addr->s6_addr16[1] == 0) &&
225 (addr->s6_addr32[1] == 0) &&
226 (addr->s6_addr16[4] == 0) &&
227 (addr->s6_addr[10] == 0) &&
228 (addr->s6_addr[11] == 1) &&
229 (addr->s6_addr[12] == 0xff)))
230 {
231 buf[0]=0xC0;
232 buf[1]=0x00;
233 buf[2]=0x01;
234 buf[3]=0x00;
235 buf[4]=0x00;
236 buf[5]=0x00;
237 /* All routers FF0x::2 */
238 } else if ((addr->s6_addr[0] ==0xff) &&
239 ((addr->s6_addr[1] & 0xF0) == 0) &&
240 (addr->s6_addr16[1] == 0) &&
241 (addr->s6_addr32[1] == 0) &&
242 (addr->s6_addr32[2] == 0) &&
243 (addr->s6_addr16[6] == 0) &&
244 (addr->s6_addr[15] == 2))
245 {
246 buf[0]=0xC0;
247 buf[1]=0x00;
248 buf[2]=0x02;
249 buf[3]=0x00;
250 buf[4]=0x00;
251 buf[5]=0x00;
252 } else {
253 unsigned char i ;
254
255 i = addr->s6_addr[15] & 7 ;
256 buf[0]=0xC0;
257 buf[1]=0x00;
258 buf[2]=0x00;
259 buf[3]=0x01 << i ;
260 buf[4]=0x00;
261 buf[5]=0x00;
262 }
263}
264
265static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf)
266{
267 buf[0] = 0x00;
268}
269
270static inline void ipv6_ib_mc_map(struct in6_addr *addr, char *buf)
271{
272 buf[0] = 0; /* Reserved */
273 buf[1] = 0xff; /* Multicast QPN */
274 buf[2] = 0xff;
275 buf[3] = 0xff;
276 buf[4] = 0xff;
277 buf[5] = 0x12; /* link local scope */
278 buf[6] = 0x60; /* IPv6 signature */
279 buf[7] = 0x1b;
280 buf[8] = 0; /* P_Key */
281 buf[9] = 0;
282 memcpy(buf + 10, addr->s6_addr + 6, 10);
283}
284#endif
285#endif