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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
YOSHIFUJI Hideaki3c21edb2005-12-21 22:57:24 +090027#define IF_READY 0x80000000
Linus Torvalds1da177e2005-04-16 15:20:36 -070028
29/* prefix flags */
30#define IF_PREFIX_ONLINK 0x01
31#define IF_PREFIX_AUTOCONF 0x02
32
33#ifdef __KERNEL__
34
35struct inet6_ifaddr
36{
37 struct in6_addr addr;
38 __u32 prefix_len;
39
40 __u32 valid_lft;
41 __u32 prefered_lft;
42 unsigned long cstamp; /* created timestamp */
43 unsigned long tstamp; /* updated timestamp */
44 atomic_t refcnt;
45 spinlock_t lock;
46
47 __u8 probes;
48 __u8 flags;
49
50 __u16 scope;
51
52 struct timer_list timer;
53
54 struct inet6_dev *idev;
55 struct rt6_info *rt;
56
57 struct inet6_ifaddr *lst_next; /* next addr in addr_lst */
58 struct inet6_ifaddr *if_next; /* next addr in inet6_dev */
59
60#ifdef CONFIG_IPV6_PRIVACY
61 struct inet6_ifaddr *tmp_next; /* next addr in tempaddr_lst */
62 struct inet6_ifaddr *ifpub;
63 int regen_count;
64#endif
65
66 int dead;
67};
68
69struct ip6_sf_socklist
70{
71 unsigned int sl_max;
72 unsigned int sl_count;
73 struct in6_addr sl_addr[0];
74};
75
76#define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \
77 (count) * sizeof(struct in6_addr))
78
79#define IP6_SFBLOCK 10 /* allocate this many at once */
80
81struct ipv6_mc_socklist
82{
83 struct in6_addr addr;
84 int ifindex;
85 struct ipv6_mc_socklist *next;
86 unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */
87 struct ip6_sf_socklist *sflist;
88};
89
90struct ip6_sf_list
91{
92 struct ip6_sf_list *sf_next;
93 struct in6_addr sf_addr;
94 unsigned long sf_count[2]; /* include/exclude counts */
95 unsigned char sf_gsresp; /* include in g & s response? */
96 unsigned char sf_oldin; /* change state */
97 unsigned char sf_crcount; /* retrans. left to send */
98};
99
100#define MAF_TIMER_RUNNING 0x01
101#define MAF_LAST_REPORTER 0x02
102#define MAF_LOADED 0x04
103#define MAF_NOREPORT 0x08
104#define MAF_GSQUERY 0x10
105
106struct ifmcaddr6
107{
108 struct in6_addr mca_addr;
109 struct inet6_dev *idev;
110 struct ifmcaddr6 *next;
111 struct ip6_sf_list *mca_sources;
112 struct ip6_sf_list *mca_tomb;
113 unsigned int mca_sfmode;
114 unsigned long mca_sfcount[2];
115 struct timer_list mca_timer;
116 unsigned mca_flags;
117 int mca_users;
118 atomic_t mca_refcnt;
119 spinlock_t mca_lock;
120 unsigned char mca_crcount;
121 unsigned long mca_cstamp;
122 unsigned long mca_tstamp;
123};
124
125/* Anycast stuff */
126
127struct ipv6_ac_socklist
128{
129 struct in6_addr acl_addr;
130 int acl_ifindex;
131 struct ipv6_ac_socklist *acl_next;
132};
133
134struct ifacaddr6
135{
136 struct in6_addr aca_addr;
137 struct inet6_dev *aca_idev;
138 struct rt6_info *aca_rt;
139 struct ifacaddr6 *aca_next;
140 int aca_users;
141 atomic_t aca_refcnt;
142 spinlock_t aca_lock;
143 unsigned long aca_cstamp;
144 unsigned long aca_tstamp;
145};
146
147#define IFA_HOST IPV6_ADDR_LOOPBACK
148#define IFA_LINK IPV6_ADDR_LINKLOCAL
149#define IFA_SITE IPV6_ADDR_SITELOCAL
150#define IFA_GLOBAL 0x0000U
151
152struct ipv6_devstat {
153 struct proc_dir_entry *proc_dir_entry;
154 DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6);
155};
156
157struct inet6_dev
158{
159 struct net_device *dev;
160
161 struct inet6_ifaddr *addr_list;
162
163 struct ifmcaddr6 *mc_list;
164 struct ifmcaddr6 *mc_tomb;
165 rwlock_t mc_lock;
166 unsigned long mc_v1_seen;
167 unsigned long mc_maxdelay;
168 unsigned char mc_qrv;
169 unsigned char mc_gq_running;
170 unsigned char mc_ifc_count;
171 struct timer_list mc_gq_timer; /* general query timer */
172 struct timer_list mc_ifc_timer; /* interface change timer */
173
174 struct ifacaddr6 *ac_list;
175 rwlock_t lock;
176 atomic_t refcnt;
177 __u32 if_flags;
178 int dead;
179
180#ifdef CONFIG_IPV6_PRIVACY
181 u8 rndid[8];
182 u8 entropy[8];
183 struct timer_list regen_timer;
184 struct inet6_ifaddr *tempaddr_list;
185 __u8 work_eui64[8];
186 __u8 work_digest[16];
187#endif
188
189 struct neigh_parms *nd_parms;
190 struct inet6_dev *next;
191 struct ipv6_devconf cnf;
192 struct ipv6_devstat stats;
193 unsigned long tstamp; /* ipv6InterfaceTable update timestamp */
194};
195
196extern struct ipv6_devconf ipv6_devconf;
197
198static inline void ipv6_eth_mc_map(struct in6_addr *addr, char *buf)
199{
200 /*
201 * +-------+-------+-------+-------+-------+-------+
202 * | 33 | 33 | DST13 | DST14 | DST15 | DST16 |
203 * +-------+-------+-------+-------+-------+-------+
204 */
205
206 buf[0]= 0x33;
207 buf[1]= 0x33;
208
209 memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
210}
211
212static inline void ipv6_tr_mc_map(struct in6_addr *addr, char *buf)
213{
214 /* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */
215
216 if (((addr->s6_addr[0] == 0xFF) &&
217 ((addr->s6_addr[1] == 0x01) || (addr->s6_addr[1] == 0x02)) &&
218 (addr->s6_addr16[1] == 0) &&
219 (addr->s6_addr32[1] == 0) &&
220 (addr->s6_addr32[2] == 0) &&
221 (addr->s6_addr16[6] == 0) &&
222 (addr->s6_addr[15] == 1)) ||
223 ((addr->s6_addr[0] == 0xFF) &&
224 (addr->s6_addr[1] == 0x02) &&
225 (addr->s6_addr16[1] == 0) &&
226 (addr->s6_addr32[1] == 0) &&
227 (addr->s6_addr16[4] == 0) &&
228 (addr->s6_addr[10] == 0) &&
229 (addr->s6_addr[11] == 1) &&
230 (addr->s6_addr[12] == 0xff)))
231 {
232 buf[0]=0xC0;
233 buf[1]=0x00;
234 buf[2]=0x01;
235 buf[3]=0x00;
236 buf[4]=0x00;
237 buf[5]=0x00;
238 /* All routers FF0x::2 */
239 } else if ((addr->s6_addr[0] ==0xff) &&
240 ((addr->s6_addr[1] & 0xF0) == 0) &&
241 (addr->s6_addr16[1] == 0) &&
242 (addr->s6_addr32[1] == 0) &&
243 (addr->s6_addr32[2] == 0) &&
244 (addr->s6_addr16[6] == 0) &&
245 (addr->s6_addr[15] == 2))
246 {
247 buf[0]=0xC0;
248 buf[1]=0x00;
249 buf[2]=0x02;
250 buf[3]=0x00;
251 buf[4]=0x00;
252 buf[5]=0x00;
253 } else {
254 unsigned char i ;
255
256 i = addr->s6_addr[15] & 7 ;
257 buf[0]=0xC0;
258 buf[1]=0x00;
259 buf[2]=0x00;
260 buf[3]=0x01 << i ;
261 buf[4]=0x00;
262 buf[5]=0x00;
263 }
264}
265
266static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf)
267{
268 buf[0] = 0x00;
269}
270
271static inline void ipv6_ib_mc_map(struct in6_addr *addr, char *buf)
272{
273 buf[0] = 0; /* Reserved */
274 buf[1] = 0xff; /* Multicast QPN */
275 buf[2] = 0xff;
276 buf[3] = 0xff;
277 buf[4] = 0xff;
278 buf[5] = 0x12; /* link local scope */
279 buf[6] = 0x60; /* IPv6 signature */
280 buf[7] = 0x1b;
281 buf[8] = 0; /* P_Key */
282 buf[9] = 0;
283 memcpy(buf + 10, addr->s6_addr + 6, 10);
284}
285#endif
286#endif