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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
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +000035struct inet6_ifaddr {
Linus Torvalds1da177e2005-04-16 15:20:36 -070036 struct in6_addr addr;
37 __u32 prefix_len;
38
39 __u32 valid_lft;
40 __u32 prefered_lft;
Linus Torvalds1da177e2005-04-16 15:20:36 -070041 atomic_t refcnt;
42 spinlock_t lock;
43
44 __u8 probes;
45 __u8 flags;
46
47 __u16 scope;
48
Richard Kennedy04ec5cf2009-03-21 13:29:05 -070049 unsigned long cstamp; /* created timestamp */
50 unsigned long tstamp; /* updated timestamp */
51
Linus Torvalds1da177e2005-04-16 15:20:36 -070052 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
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +000069struct ip6_sf_socklist {
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 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
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +000080struct ipv6_mc_socklist {
Linus Torvalds1da177e2005-04-16 15:20:36 -070081 struct in6_addr addr;
82 int ifindex;
83 struct ipv6_mc_socklist *next;
David L Stevens5ab4a6c2005-12-27 14:03:00 -080084 rwlock_t sflock;
Linus Torvalds1da177e2005-04-16 15:20:36 -070085 unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */
86 struct ip6_sf_socklist *sflist;
87};
88
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +000089struct ip6_sf_list {
Linus Torvalds1da177e2005-04-16 15:20:36 -070090 struct ip6_sf_list *sf_next;
91 struct in6_addr sf_addr;
92 unsigned long sf_count[2]; /* include/exclude counts */
93 unsigned char sf_gsresp; /* include in g & s response? */
94 unsigned char sf_oldin; /* change state */
95 unsigned char sf_crcount; /* retrans. left to send */
96};
97
98#define MAF_TIMER_RUNNING 0x01
99#define MAF_LAST_REPORTER 0x02
100#define MAF_LOADED 0x04
101#define MAF_NOREPORT 0x08
102#define MAF_GSQUERY 0x10
103
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +0000104struct ifmcaddr6 {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105 struct in6_addr mca_addr;
106 struct inet6_dev *idev;
107 struct ifmcaddr6 *next;
108 struct ip6_sf_list *mca_sources;
109 struct ip6_sf_list *mca_tomb;
110 unsigned int mca_sfmode;
Arnaldo Carvalho de Melo246f19d2008-02-03 04:09:17 -0800111 unsigned char mca_crcount;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112 unsigned long mca_sfcount[2];
113 struct timer_list mca_timer;
114 unsigned mca_flags;
115 int mca_users;
116 atomic_t mca_refcnt;
117 spinlock_t mca_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 unsigned long mca_cstamp;
119 unsigned long mca_tstamp;
120};
121
122/* Anycast stuff */
123
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +0000124struct ipv6_ac_socklist {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125 struct in6_addr acl_addr;
126 int acl_ifindex;
127 struct ipv6_ac_socklist *acl_next;
128};
129
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +0000130struct ifacaddr6 {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 struct in6_addr aca_addr;
132 struct inet6_dev *aca_idev;
133 struct rt6_info *aca_rt;
134 struct ifacaddr6 *aca_next;
135 int aca_users;
136 atomic_t aca_refcnt;
137 spinlock_t aca_lock;
138 unsigned long aca_cstamp;
139 unsigned long aca_tstamp;
140};
141
142#define IFA_HOST IPV6_ADDR_LOOPBACK
143#define IFA_LINK IPV6_ADDR_LINKLOCAL
144#define IFA_SITE IPV6_ADDR_SITELOCAL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145
146struct ipv6_devstat {
147 struct proc_dir_entry *proc_dir_entry;
YOSHIFUJI Hideakia11d2062006-11-04 20:11:37 +0900148 DEFINE_SNMP_STAT(struct ipstats_mib, ipv6);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149 DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6);
David L Stevens14878f72007-09-16 16:52:35 -0700150 DEFINE_SNMP_STAT(struct icmpv6msg_mib, icmpv6msg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151};
152
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +0000153struct inet6_dev {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154 struct net_device *dev;
155
156 struct inet6_ifaddr *addr_list;
157
158 struct ifmcaddr6 *mc_list;
159 struct ifmcaddr6 *mc_tomb;
160 rwlock_t mc_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 unsigned char mc_qrv;
162 unsigned char mc_gq_running;
163 unsigned char mc_ifc_count;
Arnaldo Carvalho de Melo4e7e5cf2008-02-03 04:06:59 -0800164 unsigned long mc_v1_seen;
165 unsigned long mc_maxdelay;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166 struct timer_list mc_gq_timer; /* general query timer */
167 struct timer_list mc_ifc_timer; /* interface change timer */
168
169 struct ifacaddr6 *ac_list;
170 rwlock_t lock;
171 atomic_t refcnt;
172 __u32 if_flags;
173 int dead;
174
175#ifdef CONFIG_IPV6_PRIVACY
176 u8 rndid[8];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177 struct timer_list regen_timer;
178 struct inet6_ifaddr *tempaddr_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179#endif
180
181 struct neigh_parms *nd_parms;
182 struct inet6_dev *next;
183 struct ipv6_devconf cnf;
184 struct ipv6_devstat stats;
185 unsigned long tstamp; /* ipv6InterfaceTable update timestamp */
YOSHIFUJI Hideaki8814c4b2006-09-22 14:44:24 -0700186 struct rcu_head rcu;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187};
188
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189static inline void ipv6_eth_mc_map(struct in6_addr *addr, char *buf)
190{
191 /*
192 * +-------+-------+-------+-------+-------+-------+
193 * | 33 | 33 | DST13 | DST14 | DST15 | DST16 |
194 * +-------+-------+-------+-------+-------+-------+
195 */
196
197 buf[0]= 0x33;
198 buf[1]= 0x33;
199
200 memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
201}
202
203static inline void ipv6_tr_mc_map(struct in6_addr *addr, char *buf)
204{
205 /* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */
206
207 if (((addr->s6_addr[0] == 0xFF) &&
208 ((addr->s6_addr[1] == 0x01) || (addr->s6_addr[1] == 0x02)) &&
209 (addr->s6_addr16[1] == 0) &&
210 (addr->s6_addr32[1] == 0) &&
211 (addr->s6_addr32[2] == 0) &&
212 (addr->s6_addr16[6] == 0) &&
213 (addr->s6_addr[15] == 1)) ||
214 ((addr->s6_addr[0] == 0xFF) &&
215 (addr->s6_addr[1] == 0x02) &&
216 (addr->s6_addr16[1] == 0) &&
217 (addr->s6_addr32[1] == 0) &&
218 (addr->s6_addr16[4] == 0) &&
219 (addr->s6_addr[10] == 0) &&
220 (addr->s6_addr[11] == 1) &&
221 (addr->s6_addr[12] == 0xff)))
222 {
223 buf[0]=0xC0;
224 buf[1]=0x00;
225 buf[2]=0x01;
226 buf[3]=0x00;
227 buf[4]=0x00;
228 buf[5]=0x00;
229 /* All routers FF0x::2 */
230 } else if ((addr->s6_addr[0] ==0xff) &&
231 ((addr->s6_addr[1] & 0xF0) == 0) &&
232 (addr->s6_addr16[1] == 0) &&
233 (addr->s6_addr32[1] == 0) &&
234 (addr->s6_addr32[2] == 0) &&
235 (addr->s6_addr16[6] == 0) &&
236 (addr->s6_addr[15] == 2))
237 {
238 buf[0]=0xC0;
239 buf[1]=0x00;
240 buf[2]=0x02;
241 buf[3]=0x00;
242 buf[4]=0x00;
243 buf[5]=0x00;
244 } else {
245 unsigned char i ;
246
247 i = addr->s6_addr[15] & 7 ;
248 buf[0]=0xC0;
249 buf[1]=0x00;
250 buf[2]=0x00;
251 buf[3]=0x01 << i ;
252 buf[4]=0x00;
253 buf[5]=0x00;
254 }
255}
256
257static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf)
258{
259 buf[0] = 0x00;
260}
261
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700262static inline void ipv6_ib_mc_map(const struct in6_addr *addr,
263 const unsigned char *broadcast, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264{
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700265 unsigned char scope = broadcast[5] & 0xF;
266
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267 buf[0] = 0; /* Reserved */
268 buf[1] = 0xff; /* Multicast QPN */
269 buf[2] = 0xff;
270 buf[3] = 0xff;
271 buf[4] = 0xff;
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700272 buf[5] = 0x10 | scope; /* scope from broadcast address */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 buf[6] = 0x60; /* IPv6 signature */
274 buf[7] = 0x1b;
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700275 buf[8] = broadcast[8]; /* P_Key */
276 buf[9] = broadcast[9];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277 memcpy(buf + 10, addr->s6_addr + 6, 10);
278}
279#endif
280#endif