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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
Herbert Xue9d3e082010-05-18 15:36:06 -070033enum {
Hannes Frederic Sowac15b1cc2014-03-27 18:28:07 +010034 INET6_IFADDR_STATE_PREDAD,
Herbert Xue9d3e082010-05-18 15:36:06 -070035 INET6_IFADDR_STATE_DAD,
36 INET6_IFADDR_STATE_POSTDAD,
Hannes Frederic Sowac15b1cc2014-03-27 18:28:07 +010037 INET6_IFADDR_STATE_ERRDAD,
Herbert Xue9d3e082010-05-18 15:36:06 -070038 INET6_IFADDR_STATE_DEAD,
39};
40
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +000041struct inet6_ifaddr {
Linus Torvalds1da177e2005-04-16 15:20:36 -070042 struct in6_addr addr;
43 __u32 prefix_len;
44
Lorenzo Colitti76f793e2011-07-26 13:50:49 +000045 /* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */
Linus Torvalds1da177e2005-04-16 15:20:36 -070046 __u32 valid_lft;
47 __u32 prefered_lft;
Linus Torvalds1da177e2005-04-16 15:20:36 -070048 atomic_t refcnt;
49 spinlock_t lock;
Herbert Xue9d3e082010-05-18 15:36:06 -070050 spinlock_t state_lock;
51
52 int state;
Linus Torvalds1da177e2005-04-16 15:20:36 -070053
Jiri Pirko479840f2013-12-06 09:45:21 +010054 __u32 flags;
Hannes Frederic Sowab7b1bfc2013-06-23 18:39:01 +020055 __u8 dad_probes;
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
57 __u16 scope;
58
Richard Kennedy04ec5cf2009-03-21 13:29:05 -070059 unsigned long cstamp; /* created timestamp */
60 unsigned long tstamp; /* updated timestamp */
61
Hannes Frederic Sowac15b1cc2014-03-27 18:28:07 +010062 struct delayed_work dad_work;
Linus Torvalds1da177e2005-04-16 15:20:36 -070063
64 struct inet6_dev *idev;
65 struct rt6_info *rt;
66
stephen hemmingerc2e21292010-03-17 20:31:10 +000067 struct hlist_node addr_lst;
stephen hemminger502a2ff2010-03-17 20:31:13 +000068 struct list_head if_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
stephen hemminger372e6c82010-03-17 20:31:09 +000070 struct list_head tmp_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -070071 struct inet6_ifaddr *ifpub;
72 int regen_count;
David S. Miller5d9efa72013-10-28 20:07:50 -040073
Daniel Borkmann617fe292013-04-09 03:47:16 +000074 bool tokenized;
75
stephen hemminger5c578ae2010-03-17 20:31:11 +000076 struct rcu_head rcu;
Nicolas Dichtelcaeaba72013-05-16 22:32:00 +000077 struct in6_addr peer_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -070078};
79
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +000080struct ip6_sf_socklist {
Linus Torvalds1da177e2005-04-16 15:20:36 -070081 unsigned int sl_max;
82 unsigned int sl_count;
83 struct in6_addr sl_addr[0];
84};
85
86#define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \
87 (count) * sizeof(struct in6_addr))
88
89#define IP6_SFBLOCK 10 /* allocate this many at once */
90
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +000091struct ipv6_mc_socklist {
Linus Torvalds1da177e2005-04-16 15:20:36 -070092 struct in6_addr addr;
93 int ifindex;
Eric Dumazet456b61b2010-11-23 13:12:15 +000094 struct ipv6_mc_socklist __rcu *next;
David L Stevens5ab4a6c2005-12-27 14:03:00 -080095 rwlock_t sflock;
Linus Torvalds1da177e2005-04-16 15:20:36 -070096 unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */
97 struct ip6_sf_socklist *sflist;
Eric Dumazet456b61b2010-11-23 13:12:15 +000098 struct rcu_head rcu;
Linus Torvalds1da177e2005-04-16 15:20:36 -070099};
100
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +0000101struct ip6_sf_list {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102 struct ip6_sf_list *sf_next;
103 struct in6_addr sf_addr;
104 unsigned long sf_count[2]; /* include/exclude counts */
105 unsigned char sf_gsresp; /* include in g & s response? */
106 unsigned char sf_oldin; /* change state */
107 unsigned char sf_crcount; /* retrans. left to send */
108};
109
110#define MAF_TIMER_RUNNING 0x01
111#define MAF_LAST_REPORTER 0x02
112#define MAF_LOADED 0x04
113#define MAF_NOREPORT 0x08
114#define MAF_GSQUERY 0x10
115
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +0000116struct ifmcaddr6 {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117 struct in6_addr mca_addr;
118 struct inet6_dev *idev;
119 struct ifmcaddr6 *next;
120 struct ip6_sf_list *mca_sources;
121 struct ip6_sf_list *mca_tomb;
122 unsigned int mca_sfmode;
Arnaldo Carvalho de Melo246f19d2008-02-03 04:09:17 -0800123 unsigned char mca_crcount;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 unsigned long mca_sfcount[2];
125 struct timer_list mca_timer;
Eric Dumazet95c96172012-04-15 05:58:06 +0000126 unsigned int mca_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 int mca_users;
128 atomic_t mca_refcnt;
129 spinlock_t mca_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 unsigned long mca_cstamp;
131 unsigned long mca_tstamp;
132};
133
134/* Anycast stuff */
135
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +0000136struct ipv6_ac_socklist {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137 struct in6_addr acl_addr;
138 int acl_ifindex;
139 struct ipv6_ac_socklist *acl_next;
140};
141
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +0000142struct ifacaddr6 {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143 struct in6_addr aca_addr;
144 struct inet6_dev *aca_idev;
145 struct rt6_info *aca_rt;
146 struct ifacaddr6 *aca_next;
147 int aca_users;
148 atomic_t aca_refcnt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149 unsigned long aca_cstamp;
150 unsigned long aca_tstamp;
151};
152
153#define IFA_HOST IPV6_ADDR_LOOPBACK
154#define IFA_LINK IPV6_ADDR_LINKLOCAL
155#define IFA_SITE IPV6_ADDR_SITELOCAL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156
157struct ipv6_devstat {
158 struct proc_dir_entry *proc_dir_entry;
YOSHIFUJI Hideakia11d2062006-11-04 20:11:37 +0900159 DEFINE_SNMP_STAT(struct ipstats_mib, ipv6);
Eric Dumazetbe281e52011-05-19 01:14:23 +0000160 DEFINE_SNMP_STAT_ATOMIC(struct icmpv6_mib_device, icmpv6dev);
161 DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib_device, icmpv6msgdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162};
163
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +0000164struct inet6_dev {
stephen hemminger502a2ff2010-03-17 20:31:13 +0000165 struct net_device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166
stephen hemminger502a2ff2010-03-17 20:31:13 +0000167 struct list_head addr_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168
169 struct ifmcaddr6 *mc_list;
170 struct ifmcaddr6 *mc_tomb;
Stephen Hemminger6457d262010-02-17 18:48:44 -0800171 spinlock_t mc_lock;
Daniel Borkmann89225d12013-09-04 00:19:37 +0200172
173 unsigned char mc_qrv; /* Query Robustness Variable */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174 unsigned char mc_gq_running;
175 unsigned char mc_ifc_count;
Hannes Frederic Sowab173ee42013-06-27 00:07:01 +0200176 unsigned char mc_dad_count;
Daniel Borkmann89225d12013-09-04 00:19:37 +0200177
178 unsigned long mc_v1_seen; /* Max time we stay in MLDv1 mode */
179 unsigned long mc_qi; /* Query Interval */
180 unsigned long mc_qri; /* Query Response Interval */
Arnaldo Carvalho de Melo4e7e5cf2008-02-03 04:06:59 -0800181 unsigned long mc_maxdelay;
Daniel Borkmann89225d12013-09-04 00:19:37 +0200182
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183 struct timer_list mc_gq_timer; /* general query timer */
184 struct timer_list mc_ifc_timer; /* interface change timer */
Hannes Frederic Sowab173ee42013-06-27 00:07:01 +0200185 struct timer_list mc_dad_timer; /* dad complete mc timer */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186
187 struct ifacaddr6 *ac_list;
188 rwlock_t lock;
189 atomic_t refcnt;
190 __u32 if_flags;
191 int dead;
192
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 u8 rndid[8];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194 struct timer_list regen_timer;
stephen hemminger372e6c82010-03-17 20:31:09 +0000195 struct list_head tempaddr_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196
Daniel Borkmannf53adae2013-04-08 04:01:30 +0000197 struct in6_addr token;
198
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199 struct neigh_parms *nd_parms;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200 struct ipv6_devconf cnf;
201 struct ipv6_devstat stats;
Hannes Frederic Sowab7b1bfc2013-06-23 18:39:01 +0200202
203 struct timer_list rs_timer;
204 __u8 rs_probes;
205
Jiri Pirkobc91b0f2014-07-11 21:10:18 +0200206 __u8 addr_gen_mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 unsigned long tstamp; /* ipv6InterfaceTable update timestamp */
YOSHIFUJI Hideaki8814c4b2006-09-22 14:44:24 -0700208 struct rcu_head rcu;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209};
210
Eric Dumazetb71d1d42011-04-22 04:53:02 +0000211static inline void ipv6_eth_mc_map(const struct in6_addr *addr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212{
213 /*
214 * +-------+-------+-------+-------+-------+-------+
215 * | 33 | 33 | DST13 | DST14 | DST15 | DST16 |
216 * +-------+-------+-------+-------+-------+-------+
217 */
218
219 buf[0]= 0x33;
220 buf[1]= 0x33;
221
222 memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
223}
224
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf)
226{
227 buf[0] = 0x00;
228}
229
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700230static inline void ipv6_ib_mc_map(const struct in6_addr *addr,
231 const unsigned char *broadcast, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232{
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700233 unsigned char scope = broadcast[5] & 0xF;
234
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235 buf[0] = 0; /* Reserved */
236 buf[1] = 0xff; /* Multicast QPN */
237 buf[2] = 0xff;
238 buf[3] = 0xff;
239 buf[4] = 0xff;
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700240 buf[5] = 0x10 | scope; /* scope from broadcast address */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 buf[6] = 0x60; /* IPv6 signature */
242 buf[7] = 0x1b;
Rolf Manderscheida9e527e2007-12-10 13:38:41 -0700243 buf[8] = broadcast[8]; /* P_Key */
244 buf[9] = broadcast[9];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245 memcpy(buf + 10, addr->s6_addr + 6, 10);
246}
Timo Teräs93ca3bb2011-03-28 22:40:53 +0000247
248static inline int ipv6_ipgre_mc_map(const struct in6_addr *addr,
249 const unsigned char *broadcast, char *buf)
250{
251 if ((broadcast[0] | broadcast[1] | broadcast[2] | broadcast[3]) != 0) {
252 memcpy(buf, broadcast, 4);
253 } else {
254 /* v4mapped? */
255 if ((addr->s6_addr32[0] | addr->s6_addr32[1] |
256 (addr->s6_addr32[2] ^ htonl(0x0000ffff))) != 0)
257 return -EINVAL;
258 memcpy(buf, &addr->s6_addr32[3], 4);
259 }
260 return 0;
261}
262
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263#endif