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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;
David L Stevens5ab4a6c2005-12-27 14:03:00 -080086 rwlock_t sflock;
Linus Torvalds1da177e2005-04-16 15:20:36 -070087 unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */
88 struct ip6_sf_socklist *sflist;
89};
90
91struct ip6_sf_list
92{
93 struct ip6_sf_list *sf_next;
94 struct in6_addr sf_addr;
95 unsigned long sf_count[2]; /* include/exclude counts */
96 unsigned char sf_gsresp; /* include in g & s response? */
97 unsigned char sf_oldin; /* change state */
98 unsigned char sf_crcount; /* retrans. left to send */
99};
100
101#define MAF_TIMER_RUNNING 0x01
102#define MAF_LAST_REPORTER 0x02
103#define MAF_LOADED 0x04
104#define MAF_NOREPORT 0x08
105#define MAF_GSQUERY 0x10
106
107struct ifmcaddr6
108{
109 struct in6_addr mca_addr;
110 struct inet6_dev *idev;
111 struct ifmcaddr6 *next;
112 struct ip6_sf_list *mca_sources;
113 struct ip6_sf_list *mca_tomb;
114 unsigned int mca_sfmode;
Arnaldo Carvalho de Melo246f19d2008-02-03 04:09:17 -0800115 unsigned char mca_crcount;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116 unsigned long mca_sfcount[2];
117 struct timer_list mca_timer;
118 unsigned mca_flags;
119 int mca_users;
120 atomic_t mca_refcnt;
121 spinlock_t mca_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 unsigned long mca_cstamp;
123 unsigned long mca_tstamp;
124};
125
126/* Anycast stuff */
127
128struct ipv6_ac_socklist
129{
130 struct in6_addr acl_addr;
131 int acl_ifindex;
132 struct ipv6_ac_socklist *acl_next;
133};
134
135struct ifacaddr6
136{
137 struct in6_addr aca_addr;
138 struct inet6_dev *aca_idev;
139 struct rt6_info *aca_rt;
140 struct ifacaddr6 *aca_next;
141 int aca_users;
142 atomic_t aca_refcnt;
143 spinlock_t aca_lock;
144 unsigned long aca_cstamp;
145 unsigned long aca_tstamp;
146};
147
148#define IFA_HOST IPV6_ADDR_LOOPBACK
149#define IFA_LINK IPV6_ADDR_LINKLOCAL
150#define IFA_SITE IPV6_ADDR_SITELOCAL
151#define IFA_GLOBAL 0x0000U
152
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
197extern struct ipv6_devconf ipv6_devconf;
198
199static inline void ipv6_eth_mc_map(struct in6_addr *addr, char *buf)
200{
201 /*
202 * +-------+-------+-------+-------+-------+-------+
203 * | 33 | 33 | DST13 | DST14 | DST15 | DST16 |
204 * +-------+-------+-------+-------+-------+-------+
205 */
206
207 buf[0]= 0x33;
208 buf[1]= 0x33;
209
210 memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
211}
212
213static inline void ipv6_tr_mc_map(struct in6_addr *addr, char *buf)
214{
215 /* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */
216
217 if (((addr->s6_addr[0] == 0xFF) &&
218 ((addr->s6_addr[1] == 0x01) || (addr->s6_addr[1] == 0x02)) &&
219 (addr->s6_addr16[1] == 0) &&
220 (addr->s6_addr32[1] == 0) &&
221 (addr->s6_addr32[2] == 0) &&
222 (addr->s6_addr16[6] == 0) &&
223 (addr->s6_addr[15] == 1)) ||
224 ((addr->s6_addr[0] == 0xFF) &&
225 (addr->s6_addr[1] == 0x02) &&
226 (addr->s6_addr16[1] == 0) &&
227 (addr->s6_addr32[1] == 0) &&
228 (addr->s6_addr16[4] == 0) &&
229 (addr->s6_addr[10] == 0) &&
230 (addr->s6_addr[11] == 1) &&
231 (addr->s6_addr[12] == 0xff)))
232 {
233 buf[0]=0xC0;
234 buf[1]=0x00;
235 buf[2]=0x01;
236 buf[3]=0x00;
237 buf[4]=0x00;
238 buf[5]=0x00;
239 /* All routers FF0x::2 */
240 } else if ((addr->s6_addr[0] ==0xff) &&
241 ((addr->s6_addr[1] & 0xF0) == 0) &&
242 (addr->s6_addr16[1] == 0) &&
243 (addr->s6_addr32[1] == 0) &&
244 (addr->s6_addr32[2] == 0) &&
245 (addr->s6_addr16[6] == 0) &&
246 (addr->s6_addr[15] == 2))
247 {
248 buf[0]=0xC0;
249 buf[1]=0x00;
250 buf[2]=0x02;
251 buf[3]=0x00;
252 buf[4]=0x00;
253 buf[5]=0x00;
254 } else {
255 unsigned char i ;
256
257 i = addr->s6_addr[15] & 7 ;
258 buf[0]=0xC0;
259 buf[1]=0x00;
260 buf[2]=0x00;
261 buf[3]=0x01 << i ;
262 buf[4]=0x00;
263 buf[5]=0x00;
264 }
265}
266
267static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf)
268{
269 buf[0] = 0x00;
270}
271
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700272static inline void ipv6_ib_mc_map(const struct in6_addr *addr,
273 const unsigned char *broadcast, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274{
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700275 unsigned char scope = broadcast[5] & 0xF;
276
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277 buf[0] = 0; /* Reserved */
278 buf[1] = 0xff; /* Multicast QPN */
279 buf[2] = 0xff;
280 buf[3] = 0xff;
281 buf[4] = 0xff;
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700282 buf[5] = 0x10 | scope; /* scope from broadcast address */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283 buf[6] = 0x60; /* IPv6 signature */
284 buf[7] = 0x1b;
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700285 buf[8] = broadcast[8]; /* P_Key */
286 buf[9] = broadcast[9];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 memcpy(buf + 10, addr->s6_addr + 6, 10);
288}
289#endif
290#endif