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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
stephen hemmingerc2e21292010-03-17 20:31:10 +000057 struct hlist_node addr_lst;
stephen hemminger502a2ff2010-03-17 20:31:13 +000058 struct list_head if_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -070059
60#ifdef CONFIG_IPV6_PRIVACY
stephen hemminger372e6c82010-03-17 20:31:09 +000061 struct list_head tmp_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -070062 struct inet6_ifaddr *ifpub;
63 int regen_count;
64#endif
65
66 int dead;
stephen hemminger5c578ae2010-03-17 20:31:11 +000067 struct rcu_head rcu;
Linus Torvalds1da177e2005-04-16 15:20:36 -070068};
69
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +000070struct ip6_sf_socklist {
Linus Torvalds1da177e2005-04-16 15:20:36 -070071 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
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +000081struct ipv6_mc_socklist {
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 struct in6_addr addr;
83 int ifindex;
84 struct ipv6_mc_socklist *next;
David L Stevens5ab4a6c2005-12-27 14:03:00 -080085 rwlock_t sflock;
Linus Torvalds1da177e2005-04-16 15:20:36 -070086 unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */
87 struct ip6_sf_socklist *sflist;
88};
89
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +000090struct ip6_sf_list {
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 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
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +0000105struct ifmcaddr6 {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106 struct in6_addr mca_addr;
107 struct inet6_dev *idev;
108 struct ifmcaddr6 *next;
109 struct ip6_sf_list *mca_sources;
110 struct ip6_sf_list *mca_tomb;
111 unsigned int mca_sfmode;
Arnaldo Carvalho de Melo246f19d2008-02-03 04:09:17 -0800112 unsigned char mca_crcount;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113 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;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119 unsigned long mca_cstamp;
120 unsigned long mca_tstamp;
121};
122
123/* Anycast stuff */
124
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +0000125struct ipv6_ac_socklist {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 struct in6_addr acl_addr;
127 int acl_ifindex;
128 struct ipv6_ac_socklist *acl_next;
129};
130
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +0000131struct ifacaddr6 {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 struct in6_addr aca_addr;
133 struct inet6_dev *aca_idev;
134 struct rt6_info *aca_rt;
135 struct ifacaddr6 *aca_next;
136 int aca_users;
137 atomic_t aca_refcnt;
138 spinlock_t aca_lock;
139 unsigned long aca_cstamp;
140 unsigned long aca_tstamp;
141};
142
143#define IFA_HOST IPV6_ADDR_LOOPBACK
144#define IFA_LINK IPV6_ADDR_LINKLOCAL
145#define IFA_SITE IPV6_ADDR_SITELOCAL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146
147struct ipv6_devstat {
148 struct proc_dir_entry *proc_dir_entry;
YOSHIFUJI Hideakia11d2062006-11-04 20:11:37 +0900149 DEFINE_SNMP_STAT(struct ipstats_mib, ipv6);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6);
David L Stevens14878f72007-09-16 16:52:35 -0700151 DEFINE_SNMP_STAT(struct icmpv6msg_mib, icmpv6msg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152};
153
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +0000154struct inet6_dev {
stephen hemminger502a2ff2010-03-17 20:31:13 +0000155 struct net_device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156
stephen hemminger502a2ff2010-03-17 20:31:13 +0000157 struct list_head addr_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158
159 struct ifmcaddr6 *mc_list;
160 struct ifmcaddr6 *mc_tomb;
Stephen Hemminger6457d262010-02-17 18:48:44 -0800161 spinlock_t mc_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 unsigned char mc_qrv;
163 unsigned char mc_gq_running;
164 unsigned char mc_ifc_count;
Arnaldo Carvalho de Melo4e7e5cf2008-02-03 04:06:59 -0800165 unsigned long mc_v1_seen;
166 unsigned long mc_maxdelay;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167 struct timer_list mc_gq_timer; /* general query timer */
168 struct timer_list mc_ifc_timer; /* interface change timer */
169
170 struct ifacaddr6 *ac_list;
171 rwlock_t lock;
172 atomic_t refcnt;
173 __u32 if_flags;
174 int dead;
175
176#ifdef CONFIG_IPV6_PRIVACY
177 u8 rndid[8];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 struct timer_list regen_timer;
stephen hemminger372e6c82010-03-17 20:31:09 +0000179 struct list_head tempaddr_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180#endif
181
182 struct neigh_parms *nd_parms;
183 struct inet6_dev *next;
184 struct ipv6_devconf cnf;
185 struct ipv6_devstat stats;
186 unsigned long tstamp; /* ipv6InterfaceTable update timestamp */
YOSHIFUJI Hideaki8814c4b2006-09-22 14:44:24 -0700187 struct rcu_head rcu;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188};
189
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190static inline void ipv6_eth_mc_map(struct in6_addr *addr, char *buf)
191{
192 /*
193 * +-------+-------+-------+-------+-------+-------+
194 * | 33 | 33 | DST13 | DST14 | DST15 | DST16 |
195 * +-------+-------+-------+-------+-------+-------+
196 */
197
198 buf[0]= 0x33;
199 buf[1]= 0x33;
200
201 memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
202}
203
204static inline void ipv6_tr_mc_map(struct in6_addr *addr, char *buf)
205{
206 /* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */
207
208 if (((addr->s6_addr[0] == 0xFF) &&
209 ((addr->s6_addr[1] == 0x01) || (addr->s6_addr[1] == 0x02)) &&
210 (addr->s6_addr16[1] == 0) &&
211 (addr->s6_addr32[1] == 0) &&
212 (addr->s6_addr32[2] == 0) &&
213 (addr->s6_addr16[6] == 0) &&
214 (addr->s6_addr[15] == 1)) ||
215 ((addr->s6_addr[0] == 0xFF) &&
216 (addr->s6_addr[1] == 0x02) &&
217 (addr->s6_addr16[1] == 0) &&
218 (addr->s6_addr32[1] == 0) &&
219 (addr->s6_addr16[4] == 0) &&
220 (addr->s6_addr[10] == 0) &&
221 (addr->s6_addr[11] == 1) &&
222 (addr->s6_addr[12] == 0xff)))
223 {
224 buf[0]=0xC0;
225 buf[1]=0x00;
226 buf[2]=0x01;
227 buf[3]=0x00;
228 buf[4]=0x00;
229 buf[5]=0x00;
230 /* All routers FF0x::2 */
231 } else if ((addr->s6_addr[0] ==0xff) &&
232 ((addr->s6_addr[1] & 0xF0) == 0) &&
233 (addr->s6_addr16[1] == 0) &&
234 (addr->s6_addr32[1] == 0) &&
235 (addr->s6_addr32[2] == 0) &&
236 (addr->s6_addr16[6] == 0) &&
237 (addr->s6_addr[15] == 2))
238 {
239 buf[0]=0xC0;
240 buf[1]=0x00;
241 buf[2]=0x02;
242 buf[3]=0x00;
243 buf[4]=0x00;
244 buf[5]=0x00;
245 } else {
246 unsigned char i ;
247
248 i = addr->s6_addr[15] & 7 ;
249 buf[0]=0xC0;
250 buf[1]=0x00;
251 buf[2]=0x00;
252 buf[3]=0x01 << i ;
253 buf[4]=0x00;
254 buf[5]=0x00;
255 }
256}
257
258static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf)
259{
260 buf[0] = 0x00;
261}
262
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700263static inline void ipv6_ib_mc_map(const struct in6_addr *addr,
264 const unsigned char *broadcast, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265{
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700266 unsigned char scope = broadcast[5] & 0xF;
267
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268 buf[0] = 0; /* Reserved */
269 buf[1] = 0xff; /* Multicast QPN */
270 buf[2] = 0xff;
271 buf[3] = 0xff;
272 buf[4] = 0xff;
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700273 buf[5] = 0x10 | scope; /* scope from broadcast address */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274 buf[6] = 0x60; /* IPv6 signature */
275 buf[7] = 0x1b;
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700276 buf[8] = broadcast[8]; /* P_Key */
277 buf[9] = broadcast[9];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278 memcpy(buf + 10, addr->s6_addr + 6, 10);
279}
280#endif
281#endif