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Commit | Line | Data |
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2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
1da177e4 LT |
2 | /* |
3 | * inet6 interface/address list definitions | |
4 | * Linux INET6 implementation | |
5 | * | |
6 | * Authors: | |
7 | * Pedro Roque <roque@di.fc.ul.pt> | |
1da177e4 LT |
8 | */ |
9 | ||
10 | #ifndef _NET_IF_INET6_H | |
11 | #define _NET_IF_INET6_H | |
12 | ||
13 | #include <net/snmp.h> | |
14 | #include <linux/ipv6.h> | |
1be92460 | 15 | #include <linux/refcount.h> |
1da177e4 LT |
16 | |
17 | /* inet6_dev.if_flags */ | |
18 | ||
19 | #define IF_RA_OTHERCONF 0x80 | |
20 | #define IF_RA_MANAGED 0x40 | |
21 | #define IF_RA_RCVD 0x20 | |
22 | #define IF_RS_SENT 0x10 | |
3c21edbd | 23 | #define IF_READY 0x80000000 |
1da177e4 LT |
24 | |
25 | /* prefix flags */ | |
26 | #define IF_PREFIX_ONLINK 0x01 | |
27 | #define IF_PREFIX_AUTOCONF 0x02 | |
28 | ||
e9d3e084 | 29 | enum { |
c15b1cca | 30 | INET6_IFADDR_STATE_PREDAD, |
e9d3e084 HX |
31 | INET6_IFADDR_STATE_DAD, |
32 | INET6_IFADDR_STATE_POSTDAD, | |
c15b1cca | 33 | INET6_IFADDR_STATE_ERRDAD, |
e9d3e084 HX |
34 | INET6_IFADDR_STATE_DEAD, |
35 | }; | |
36 | ||
fd2c3ef7 | 37 | struct inet6_ifaddr { |
1da177e4 LT |
38 | struct in6_addr addr; |
39 | __u32 prefix_len; | |
8308f3ff | 40 | __u32 rt_priority; |
8e8e676d | 41 | |
76f793e3 | 42 | /* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */ |
1da177e4 LT |
43 | __u32 valid_lft; |
44 | __u32 prefered_lft; | |
271201c0 | 45 | refcount_t refcnt; |
1da177e4 | 46 | spinlock_t lock; |
e9d3e084 HX |
47 | |
48 | int state; | |
1da177e4 | 49 | |
479840ff | 50 | __u32 flags; |
b7b1bfce | 51 | __u8 dad_probes; |
5f40ef77 | 52 | __u8 stable_privacy_retry; |
1da177e4 LT |
53 | |
54 | __u16 scope; | |
adc176c5 | 55 | __u64 dad_nonce; |
1da177e4 | 56 | |
04ec5cfc RK |
57 | unsigned long cstamp; /* created timestamp */ |
58 | unsigned long tstamp; /* updated timestamp */ | |
59 | ||
c15b1cca | 60 | struct delayed_work dad_work; |
1da177e4 LT |
61 | |
62 | struct inet6_dev *idev; | |
8d1c802b | 63 | struct fib6_info *rt; |
1da177e4 | 64 | |
c2e21293 | 65 | struct hlist_node addr_lst; |
502a2ffd | 66 | struct list_head if_list; |
1da177e4 | 67 | |
372e6c8f | 68 | struct list_head tmp_list; |
1da177e4 LT |
69 | struct inet6_ifaddr *ifpub; |
70 | int regen_count; | |
5d9efa7e | 71 | |
617fe29d DB |
72 | bool tokenized; |
73 | ||
5c578aed | 74 | struct rcu_head rcu; |
caeaba79 | 75 | struct in6_addr peer_addr; |
1da177e4 LT |
76 | }; |
77 | ||
fd2c3ef7 | 78 | struct ip6_sf_socklist { |
1da177e4 LT |
79 | unsigned int sl_max; |
80 | unsigned int sl_count; | |
0fa39d6d | 81 | struct in6_addr sl_addr[]; |
1da177e4 LT |
82 | }; |
83 | ||
84 | #define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \ | |
85 | (count) * sizeof(struct in6_addr)) | |
86 | ||
87 | #define IP6_SFBLOCK 10 /* allocate this many at once */ | |
88 | ||
fd2c3ef7 | 89 | struct ipv6_mc_socklist { |
1da177e4 LT |
90 | struct in6_addr addr; |
91 | int ifindex; | |
14105c19 | 92 | unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */ |
456b61bc | 93 | struct ipv6_mc_socklist __rcu *next; |
5ab4a6c8 | 94 | rwlock_t sflock; |
1da177e4 | 95 | struct ip6_sf_socklist *sflist; |
456b61bc | 96 | struct rcu_head rcu; |
1da177e4 LT |
97 | }; |
98 | ||
fd2c3ef7 | 99 | struct ip6_sf_list { |
1da177e4 LT |
100 | struct ip6_sf_list *sf_next; |
101 | struct in6_addr sf_addr; | |
102 | unsigned long sf_count[2]; /* include/exclude counts */ | |
103 | unsigned char sf_gsresp; /* include in g & s response? */ | |
104 | unsigned char sf_oldin; /* change state */ | |
105 | unsigned char sf_crcount; /* retrans. left to send */ | |
106 | }; | |
107 | ||
108 | #define MAF_TIMER_RUNNING 0x01 | |
109 | #define MAF_LAST_REPORTER 0x02 | |
110 | #define MAF_LOADED 0x04 | |
111 | #define MAF_NOREPORT 0x08 | |
112 | #define MAF_GSQUERY 0x10 | |
113 | ||
fd2c3ef7 | 114 | struct ifmcaddr6 { |
1da177e4 LT |
115 | struct in6_addr mca_addr; |
116 | struct inet6_dev *idev; | |
117 | struct ifmcaddr6 *next; | |
118 | struct ip6_sf_list *mca_sources; | |
119 | struct ip6_sf_list *mca_tomb; | |
120 | unsigned int mca_sfmode; | |
246f19d1 | 121 | unsigned char mca_crcount; |
1da177e4 LT |
122 | unsigned long mca_sfcount[2]; |
123 | struct timer_list mca_timer; | |
95c96174 | 124 | unsigned int mca_flags; |
1da177e4 | 125 | int mca_users; |
d3981bc6 | 126 | refcount_t mca_refcnt; |
1da177e4 | 127 | spinlock_t mca_lock; |
1da177e4 LT |
128 | unsigned long mca_cstamp; |
129 | unsigned long mca_tstamp; | |
130 | }; | |
131 | ||
132 | /* Anycast stuff */ | |
133 | ||
fd2c3ef7 | 134 | struct ipv6_ac_socklist { |
1da177e4 LT |
135 | struct in6_addr acl_addr; |
136 | int acl_ifindex; | |
137 | struct ipv6_ac_socklist *acl_next; | |
138 | }; | |
139 | ||
fd2c3ef7 | 140 | struct ifacaddr6 { |
1da177e4 | 141 | struct in6_addr aca_addr; |
8d1c802b | 142 | struct fib6_info *aca_rt; |
1da177e4 | 143 | struct ifacaddr6 *aca_next; |
2384d025 | 144 | struct hlist_node aca_addr_lst; |
1da177e4 | 145 | int aca_users; |
affa78bc | 146 | refcount_t aca_refcnt; |
1da177e4 LT |
147 | unsigned long aca_cstamp; |
148 | unsigned long aca_tstamp; | |
2384d025 | 149 | struct rcu_head rcu; |
1da177e4 LT |
150 | }; |
151 | ||
152 | #define IFA_HOST IPV6_ADDR_LOOPBACK | |
153 | #define IFA_LINK IPV6_ADDR_LINKLOCAL | |
154 | #define IFA_SITE IPV6_ADDR_SITELOCAL | |
1da177e4 LT |
155 | |
156 | struct ipv6_devstat { | |
157 | struct proc_dir_entry *proc_dir_entry; | |
a11d206d | 158 | DEFINE_SNMP_STAT(struct ipstats_mib, ipv6); |
be281e55 ED |
159 | DEFINE_SNMP_STAT_ATOMIC(struct icmpv6_mib_device, icmpv6dev); |
160 | DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib_device, icmpv6msgdev); | |
1da177e4 LT |
161 | }; |
162 | ||
fd2c3ef7 | 163 | struct inet6_dev { |
502a2ffd | 164 | struct net_device *dev; |
1da177e4 | 165 | |
502a2ffd | 166 | struct list_head addr_list; |
1da177e4 LT |
167 | |
168 | struct ifmcaddr6 *mc_list; | |
169 | struct ifmcaddr6 *mc_tomb; | |
6457d26b | 170 | spinlock_t mc_lock; |
89225d1c DB |
171 | |
172 | unsigned char mc_qrv; /* Query Robustness Variable */ | |
1da177e4 LT |
173 | unsigned char mc_gq_running; |
174 | unsigned char mc_ifc_count; | |
b173ee48 | 175 | unsigned char mc_dad_count; |
89225d1c DB |
176 | |
177 | unsigned long mc_v1_seen; /* Max time we stay in MLDv1 mode */ | |
178 | unsigned long mc_qi; /* Query Interval */ | |
179 | unsigned long mc_qri; /* Query Response Interval */ | |
4e7e5cfe | 180 | unsigned long mc_maxdelay; |
89225d1c | 181 | |
1da177e4 LT |
182 | struct timer_list mc_gq_timer; /* general query timer */ |
183 | struct timer_list mc_ifc_timer; /* interface change timer */ | |
b173ee48 | 184 | struct timer_list mc_dad_timer; /* dad complete mc timer */ |
1da177e4 LT |
185 | |
186 | struct ifacaddr6 *ac_list; | |
187 | rwlock_t lock; | |
1be92460 | 188 | refcount_t refcnt; |
1da177e4 LT |
189 | __u32 if_flags; |
190 | int dead; | |
191 | ||
76506a98 | 192 | u32 desync_factor; |
372e6c8f | 193 | struct list_head tempaddr_list; |
1da177e4 | 194 | |
f53adae4 DB |
195 | struct in6_addr token; |
196 | ||
1da177e4 | 197 | struct neigh_parms *nd_parms; |
1da177e4 LT |
198 | struct ipv6_devconf cnf; |
199 | struct ipv6_devstat stats; | |
b7b1bfce HFS |
200 | |
201 | struct timer_list rs_timer; | |
bd11f074 | 202 | __s32 rs_interval; /* in jiffies */ |
b7b1bfce HFS |
203 | __u8 rs_probes; |
204 | ||
1da177e4 | 205 | unsigned long tstamp; /* ipv6InterfaceTable update timestamp */ |
8814c4b5 | 206 | struct rcu_head rcu; |
1da177e4 LT |
207 | }; |
208 | ||
b71d1d42 | 209 | static inline void ipv6_eth_mc_map(const struct in6_addr *addr, char *buf) |
1da177e4 LT |
210 | { |
211 | /* | |
212 | * +-------+-------+-------+-------+-------+-------+ | |
213 | * | 33 | 33 | DST13 | DST14 | DST15 | DST16 | | |
214 | * +-------+-------+-------+-------+-------+-------+ | |
215 | */ | |
216 | ||
217 | buf[0]= 0x33; | |
218 | buf[1]= 0x33; | |
219 | ||
220 | memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32)); | |
221 | } | |
222 | ||
1da177e4 LT |
223 | static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf) |
224 | { | |
225 | buf[0] = 0x00; | |
226 | } | |
227 | ||
a9e527e3 RM |
228 | static inline void ipv6_ib_mc_map(const struct in6_addr *addr, |
229 | const unsigned char *broadcast, char *buf) | |
1da177e4 | 230 | { |
a9e527e3 RM |
231 | unsigned char scope = broadcast[5] & 0xF; |
232 | ||
1da177e4 LT |
233 | buf[0] = 0; /* Reserved */ |
234 | buf[1] = 0xff; /* Multicast QPN */ | |
235 | buf[2] = 0xff; | |
236 | buf[3] = 0xff; | |
237 | buf[4] = 0xff; | |
a9e527e3 | 238 | buf[5] = 0x10 | scope; /* scope from broadcast address */ |
1da177e4 LT |
239 | buf[6] = 0x60; /* IPv6 signature */ |
240 | buf[7] = 0x1b; | |
a9e527e3 RM |
241 | buf[8] = broadcast[8]; /* P_Key */ |
242 | buf[9] = broadcast[9]; | |
1da177e4 LT |
243 | memcpy(buf + 10, addr->s6_addr + 6, 10); |
244 | } | |
93ca3bb5 TT |
245 | |
246 | static inline int ipv6_ipgre_mc_map(const struct in6_addr *addr, | |
247 | const unsigned char *broadcast, char *buf) | |
248 | { | |
249 | if ((broadcast[0] | broadcast[1] | broadcast[2] | broadcast[3]) != 0) { | |
250 | memcpy(buf, broadcast, 4); | |
251 | } else { | |
252 | /* v4mapped? */ | |
253 | if ((addr->s6_addr32[0] | addr->s6_addr32[1] | | |
254 | (addr->s6_addr32[2] ^ htonl(0x0000ffff))) != 0) | |
255 | return -EINVAL; | |
256 | memcpy(buf, &addr->s6_addr32[3], 4); | |
257 | } | |
258 | return 0; | |
259 | } | |
260 | ||
1da177e4 | 261 | #endif |