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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;
Linus Torvalds1da177e2005-04-16 15:20:36 -070042 atomic_t refcnt;
43 spinlock_t lock;
44
45 __u8 probes;
46 __u8 flags;
47
48 __u16 scope;
49
Richard Kennedy04ec5cf2009-03-21 13:29:05 -070050 unsigned long cstamp; /* created timestamp */
51 unsigned long tstamp; /* updated timestamp */
52
Linus Torvalds1da177e2005-04-16 15:20:36 -070053 struct timer_list timer;
54
55 struct inet6_dev *idev;
56 struct rt6_info *rt;
57
58 struct inet6_ifaddr *lst_next; /* next addr in addr_lst */
59 struct inet6_ifaddr *if_next; /* next addr in inet6_dev */
60
61#ifdef CONFIG_IPV6_PRIVACY
62 struct inet6_ifaddr *tmp_next; /* next addr in tempaddr_lst */
63 struct inet6_ifaddr *ifpub;
64 int regen_count;
65#endif
66
67 int dead;
68};
69
70struct ip6_sf_socklist
71{
72 unsigned int sl_max;
73 unsigned int sl_count;
74 struct in6_addr sl_addr[0];
75};
76
77#define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \
78 (count) * sizeof(struct in6_addr))
79
80#define IP6_SFBLOCK 10 /* allocate this many at once */
81
82struct ipv6_mc_socklist
83{
84 struct in6_addr addr;
85 int ifindex;
86 struct ipv6_mc_socklist *next;
David L Stevens5ab4a6c2005-12-27 14:03:00 -080087 rwlock_t sflock;
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */
89 struct ip6_sf_socklist *sflist;
90};
91
92struct ip6_sf_list
93{
94 struct ip6_sf_list *sf_next;
95 struct in6_addr sf_addr;
96 unsigned long sf_count[2]; /* include/exclude counts */
97 unsigned char sf_gsresp; /* include in g & s response? */
98 unsigned char sf_oldin; /* change state */
99 unsigned char sf_crcount; /* retrans. left to send */
100};
101
102#define MAF_TIMER_RUNNING 0x01
103#define MAF_LAST_REPORTER 0x02
104#define MAF_LOADED 0x04
105#define MAF_NOREPORT 0x08
106#define MAF_GSQUERY 0x10
107
108struct ifmcaddr6
109{
110 struct in6_addr mca_addr;
111 struct inet6_dev *idev;
112 struct ifmcaddr6 *next;
113 struct ip6_sf_list *mca_sources;
114 struct ip6_sf_list *mca_tomb;
115 unsigned int mca_sfmode;
Arnaldo Carvalho de Melo246f19d2008-02-03 04:09:17 -0800116 unsigned char mca_crcount;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117 unsigned long mca_sfcount[2];
118 struct timer_list mca_timer;
119 unsigned mca_flags;
120 int mca_users;
121 atomic_t mca_refcnt;
122 spinlock_t mca_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123 unsigned long mca_cstamp;
124 unsigned long mca_tstamp;
125};
126
127/* Anycast stuff */
128
129struct ipv6_ac_socklist
130{
131 struct in6_addr acl_addr;
132 int acl_ifindex;
133 struct ipv6_ac_socklist *acl_next;
134};
135
136struct ifacaddr6
137{
138 struct in6_addr aca_addr;
139 struct inet6_dev *aca_idev;
140 struct rt6_info *aca_rt;
141 struct ifacaddr6 *aca_next;
142 int aca_users;
143 atomic_t aca_refcnt;
144 spinlock_t aca_lock;
145 unsigned long aca_cstamp;
146 unsigned long aca_tstamp;
147};
148
149#define IFA_HOST IPV6_ADDR_LOOPBACK
150#define IFA_LINK IPV6_ADDR_LINKLOCAL
151#define IFA_SITE IPV6_ADDR_SITELOCAL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152
153struct ipv6_devstat {
154 struct proc_dir_entry *proc_dir_entry;
YOSHIFUJI Hideakia11d2062006-11-04 20:11:37 +0900155 DEFINE_SNMP_STAT(struct ipstats_mib, ipv6);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156 DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6);
David L Stevens14878f72007-09-16 16:52:35 -0700157 DEFINE_SNMP_STAT(struct icmpv6msg_mib, icmpv6msg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158};
159
160struct inet6_dev
161{
162 struct net_device *dev;
163
164 struct inet6_ifaddr *addr_list;
165
166 struct ifmcaddr6 *mc_list;
167 struct ifmcaddr6 *mc_tomb;
168 rwlock_t mc_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 unsigned char mc_qrv;
170 unsigned char mc_gq_running;
171 unsigned char mc_ifc_count;
Arnaldo Carvalho de Melo4e7e5cf2008-02-03 04:06:59 -0800172 unsigned long mc_v1_seen;
173 unsigned long mc_maxdelay;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174 struct timer_list mc_gq_timer; /* general query timer */
175 struct timer_list mc_ifc_timer; /* interface change timer */
176
177 struct ifacaddr6 *ac_list;
178 rwlock_t lock;
179 atomic_t refcnt;
180 __u32 if_flags;
181 int dead;
182
183#ifdef CONFIG_IPV6_PRIVACY
184 u8 rndid[8];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185 struct timer_list regen_timer;
186 struct inet6_ifaddr *tempaddr_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187#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 */
YOSHIFUJI Hideaki8814c4b2006-09-22 14:44:24 -0700194 struct rcu_head rcu;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195};
196
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197static 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
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700270static inline void ipv6_ib_mc_map(const struct in6_addr *addr,
271 const unsigned char *broadcast, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272{
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700273 unsigned char scope = broadcast[5] & 0xF;
274
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 buf[0] = 0; /* Reserved */
276 buf[1] = 0xff; /* Multicast QPN */
277 buf[2] = 0xff;
278 buf[3] = 0xff;
279 buf[4] = 0xff;
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700280 buf[5] = 0x10 | scope; /* scope from broadcast address */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 buf[6] = 0x60; /* IPv6 signature */
282 buf[7] = 0x1b;
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700283 buf[8] = broadcast[8]; /* P_Key */
284 buf[9] = broadcast[9];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285 memcpy(buf + 10, addr->s6_addr + 6, 10);
286}
287#endif
288#endif