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1da177e4 LT |
1 | /* |
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> | |
1be92460 | 20 | #include <linux/refcount.h> |
1da177e4 LT |
21 | |
22 | /* inet6_dev.if_flags */ | |
23 | ||
24 | #define IF_RA_OTHERCONF 0x80 | |
25 | #define IF_RA_MANAGED 0x40 | |
26 | #define IF_RA_RCVD 0x20 | |
27 | #define IF_RS_SENT 0x10 | |
3c21edbd | 28 | #define IF_READY 0x80000000 |
1da177e4 LT |
29 | |
30 | /* prefix flags */ | |
31 | #define IF_PREFIX_ONLINK 0x01 | |
32 | #define IF_PREFIX_AUTOCONF 0x02 | |
33 | ||
e9d3e084 | 34 | enum { |
c15b1cca | 35 | INET6_IFADDR_STATE_PREDAD, |
e9d3e084 HX |
36 | INET6_IFADDR_STATE_DAD, |
37 | INET6_IFADDR_STATE_POSTDAD, | |
c15b1cca | 38 | INET6_IFADDR_STATE_ERRDAD, |
e9d3e084 HX |
39 | INET6_IFADDR_STATE_DEAD, |
40 | }; | |
41 | ||
fd2c3ef7 | 42 | struct inet6_ifaddr { |
1da177e4 LT |
43 | struct in6_addr addr; |
44 | __u32 prefix_len; | |
8308f3ff | 45 | __u32 rt_priority; |
8e8e676d | 46 | |
76f793e3 | 47 | /* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */ |
1da177e4 LT |
48 | __u32 valid_lft; |
49 | __u32 prefered_lft; | |
271201c0 | 50 | refcount_t refcnt; |
1da177e4 | 51 | spinlock_t lock; |
e9d3e084 HX |
52 | |
53 | int state; | |
1da177e4 | 54 | |
479840ff | 55 | __u32 flags; |
b7b1bfce | 56 | __u8 dad_probes; |
5f40ef77 | 57 | __u8 stable_privacy_retry; |
1da177e4 LT |
58 | |
59 | __u16 scope; | |
adc176c5 | 60 | __u64 dad_nonce; |
1da177e4 | 61 | |
04ec5cfc RK |
62 | unsigned long cstamp; /* created timestamp */ |
63 | unsigned long tstamp; /* updated timestamp */ | |
64 | ||
c15b1cca | 65 | struct delayed_work dad_work; |
1da177e4 LT |
66 | |
67 | struct inet6_dev *idev; | |
8d1c802b | 68 | struct fib6_info *rt; |
1da177e4 | 69 | |
c2e21293 | 70 | struct hlist_node addr_lst; |
502a2ffd | 71 | struct list_head if_list; |
1da177e4 | 72 | |
372e6c8f | 73 | struct list_head tmp_list; |
1da177e4 LT |
74 | struct inet6_ifaddr *ifpub; |
75 | int regen_count; | |
5d9efa7e | 76 | |
617fe29d DB |
77 | bool tokenized; |
78 | ||
5c578aed | 79 | struct rcu_head rcu; |
caeaba79 | 80 | struct in6_addr peer_addr; |
1da177e4 LT |
81 | }; |
82 | ||
fd2c3ef7 | 83 | struct ip6_sf_socklist { |
1da177e4 LT |
84 | unsigned int sl_max; |
85 | unsigned int sl_count; | |
86 | struct in6_addr sl_addr[0]; | |
87 | }; | |
88 | ||
89 | #define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \ | |
90 | (count) * sizeof(struct in6_addr)) | |
91 | ||
92 | #define IP6_SFBLOCK 10 /* allocate this many at once */ | |
93 | ||
fd2c3ef7 | 94 | struct ipv6_mc_socklist { |
1da177e4 LT |
95 | struct in6_addr addr; |
96 | int ifindex; | |
456b61bc | 97 | struct ipv6_mc_socklist __rcu *next; |
5ab4a6c8 | 98 | rwlock_t sflock; |
1da177e4 LT |
99 | unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */ |
100 | struct ip6_sf_socklist *sflist; | |
456b61bc | 101 | struct rcu_head rcu; |
1da177e4 LT |
102 | }; |
103 | ||
fd2c3ef7 | 104 | struct ip6_sf_list { |
1da177e4 LT |
105 | struct ip6_sf_list *sf_next; |
106 | struct in6_addr sf_addr; | |
107 | unsigned long sf_count[2]; /* include/exclude counts */ | |
108 | unsigned char sf_gsresp; /* include in g & s response? */ | |
109 | unsigned char sf_oldin; /* change state */ | |
110 | unsigned char sf_crcount; /* retrans. left to send */ | |
111 | }; | |
112 | ||
113 | #define MAF_TIMER_RUNNING 0x01 | |
114 | #define MAF_LAST_REPORTER 0x02 | |
115 | #define MAF_LOADED 0x04 | |
116 | #define MAF_NOREPORT 0x08 | |
117 | #define MAF_GSQUERY 0x10 | |
118 | ||
fd2c3ef7 | 119 | struct ifmcaddr6 { |
1da177e4 LT |
120 | struct in6_addr mca_addr; |
121 | struct inet6_dev *idev; | |
122 | struct ifmcaddr6 *next; | |
123 | struct ip6_sf_list *mca_sources; | |
124 | struct ip6_sf_list *mca_tomb; | |
125 | unsigned int mca_sfmode; | |
246f19d1 | 126 | unsigned char mca_crcount; |
1da177e4 LT |
127 | unsigned long mca_sfcount[2]; |
128 | struct timer_list mca_timer; | |
95c96174 | 129 | unsigned int mca_flags; |
1da177e4 | 130 | int mca_users; |
d3981bc6 | 131 | refcount_t mca_refcnt; |
1da177e4 | 132 | spinlock_t mca_lock; |
1da177e4 LT |
133 | unsigned long mca_cstamp; |
134 | unsigned long mca_tstamp; | |
135 | }; | |
136 | ||
137 | /* Anycast stuff */ | |
138 | ||
fd2c3ef7 | 139 | struct ipv6_ac_socklist { |
1da177e4 LT |
140 | struct in6_addr acl_addr; |
141 | int acl_ifindex; | |
142 | struct ipv6_ac_socklist *acl_next; | |
143 | }; | |
144 | ||
fd2c3ef7 | 145 | struct ifacaddr6 { |
1da177e4 | 146 | struct in6_addr aca_addr; |
8d1c802b | 147 | struct fib6_info *aca_rt; |
1da177e4 | 148 | struct ifacaddr6 *aca_next; |
2384d025 | 149 | struct hlist_node aca_addr_lst; |
1da177e4 | 150 | int aca_users; |
affa78bc | 151 | refcount_t aca_refcnt; |
1da177e4 LT |
152 | unsigned long aca_cstamp; |
153 | unsigned long aca_tstamp; | |
2384d025 | 154 | struct rcu_head rcu; |
1da177e4 LT |
155 | }; |
156 | ||
157 | #define IFA_HOST IPV6_ADDR_LOOPBACK | |
158 | #define IFA_LINK IPV6_ADDR_LINKLOCAL | |
159 | #define IFA_SITE IPV6_ADDR_SITELOCAL | |
1da177e4 LT |
160 | |
161 | struct ipv6_devstat { | |
162 | struct proc_dir_entry *proc_dir_entry; | |
a11d206d | 163 | DEFINE_SNMP_STAT(struct ipstats_mib, ipv6); |
be281e55 ED |
164 | DEFINE_SNMP_STAT_ATOMIC(struct icmpv6_mib_device, icmpv6dev); |
165 | DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib_device, icmpv6msgdev); | |
1da177e4 LT |
166 | }; |
167 | ||
fd2c3ef7 | 168 | struct inet6_dev { |
502a2ffd | 169 | struct net_device *dev; |
1da177e4 | 170 | |
502a2ffd | 171 | struct list_head addr_list; |
1da177e4 LT |
172 | |
173 | struct ifmcaddr6 *mc_list; | |
174 | struct ifmcaddr6 *mc_tomb; | |
6457d26b | 175 | spinlock_t mc_lock; |
89225d1c DB |
176 | |
177 | unsigned char mc_qrv; /* Query Robustness Variable */ | |
1da177e4 LT |
178 | unsigned char mc_gq_running; |
179 | unsigned char mc_ifc_count; | |
b173ee48 | 180 | unsigned char mc_dad_count; |
89225d1c DB |
181 | |
182 | unsigned long mc_v1_seen; /* Max time we stay in MLDv1 mode */ | |
183 | unsigned long mc_qi; /* Query Interval */ | |
184 | unsigned long mc_qri; /* Query Response Interval */ | |
4e7e5cfe | 185 | unsigned long mc_maxdelay; |
89225d1c | 186 | |
1da177e4 LT |
187 | struct timer_list mc_gq_timer; /* general query timer */ |
188 | struct timer_list mc_ifc_timer; /* interface change timer */ | |
b173ee48 | 189 | struct timer_list mc_dad_timer; /* dad complete mc timer */ |
1da177e4 LT |
190 | |
191 | struct ifacaddr6 *ac_list; | |
192 | rwlock_t lock; | |
1be92460 | 193 | refcount_t refcnt; |
1da177e4 LT |
194 | __u32 if_flags; |
195 | int dead; | |
196 | ||
76506a98 | 197 | u32 desync_factor; |
1da177e4 | 198 | u8 rndid[8]; |
372e6c8f | 199 | struct list_head tempaddr_list; |
1da177e4 | 200 | |
f53adae4 DB |
201 | struct in6_addr token; |
202 | ||
1da177e4 | 203 | struct neigh_parms *nd_parms; |
1da177e4 LT |
204 | struct ipv6_devconf cnf; |
205 | struct ipv6_devstat stats; | |
b7b1bfce HFS |
206 | |
207 | struct timer_list rs_timer; | |
bd11f074 | 208 | __s32 rs_interval; /* in jiffies */ |
b7b1bfce HFS |
209 | __u8 rs_probes; |
210 | ||
1da177e4 | 211 | unsigned long tstamp; /* ipv6InterfaceTable update timestamp */ |
8814c4b5 | 212 | struct rcu_head rcu; |
1da177e4 LT |
213 | }; |
214 | ||
b71d1d42 | 215 | static inline void ipv6_eth_mc_map(const struct in6_addr *addr, char *buf) |
1da177e4 LT |
216 | { |
217 | /* | |
218 | * +-------+-------+-------+-------+-------+-------+ | |
219 | * | 33 | 33 | DST13 | DST14 | DST15 | DST16 | | |
220 | * +-------+-------+-------+-------+-------+-------+ | |
221 | */ | |
222 | ||
223 | buf[0]= 0x33; | |
224 | buf[1]= 0x33; | |
225 | ||
226 | memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32)); | |
227 | } | |
228 | ||
1da177e4 LT |
229 | static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf) |
230 | { | |
231 | buf[0] = 0x00; | |
232 | } | |
233 | ||
a9e527e3 RM |
234 | static inline void ipv6_ib_mc_map(const struct in6_addr *addr, |
235 | const unsigned char *broadcast, char *buf) | |
1da177e4 | 236 | { |
a9e527e3 RM |
237 | unsigned char scope = broadcast[5] & 0xF; |
238 | ||
1da177e4 LT |
239 | buf[0] = 0; /* Reserved */ |
240 | buf[1] = 0xff; /* Multicast QPN */ | |
241 | buf[2] = 0xff; | |
242 | buf[3] = 0xff; | |
243 | buf[4] = 0xff; | |
a9e527e3 | 244 | buf[5] = 0x10 | scope; /* scope from broadcast address */ |
1da177e4 LT |
245 | buf[6] = 0x60; /* IPv6 signature */ |
246 | buf[7] = 0x1b; | |
a9e527e3 RM |
247 | buf[8] = broadcast[8]; /* P_Key */ |
248 | buf[9] = broadcast[9]; | |
1da177e4 LT |
249 | memcpy(buf + 10, addr->s6_addr + 6, 10); |
250 | } | |
93ca3bb5 TT |
251 | |
252 | static inline int ipv6_ipgre_mc_map(const struct in6_addr *addr, | |
253 | const unsigned char *broadcast, char *buf) | |
254 | { | |
255 | if ((broadcast[0] | broadcast[1] | broadcast[2] | broadcast[3]) != 0) { | |
256 | memcpy(buf, broadcast, 4); | |
257 | } else { | |
258 | /* v4mapped? */ | |
259 | if ((addr->s6_addr32[0] | addr->s6_addr32[1] | | |
260 | (addr->s6_addr32[2] ^ htonl(0x0000ffff))) != 0) | |
261 | return -EINVAL; | |
262 | memcpy(buf, &addr->s6_addr32[3], 4); | |
263 | } | |
264 | return 0; | |
265 | } | |
266 | ||
1da177e4 | 267 | #endif |