Commit | Line | Data |
---|---|---|
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; |
51454ea4 ND |
67 | /* |
68 | * Used to safely traverse idev->addr_list in process context | |
69 | * if the idev->lock needed to protect idev->addr_list cannot be held. | |
70 | * In that case, add the items to this list temporarily and iterate | |
71 | * without holding idev->lock. | |
72 | * See addrconf_ifdown and dev_forward_change. | |
73 | */ | |
74 | struct list_head if_list_aux; | |
1da177e4 | 75 | |
372e6c8f | 76 | struct list_head tmp_list; |
1da177e4 LT |
77 | struct inet6_ifaddr *ifpub; |
78 | int regen_count; | |
5d9efa7e | 79 | |
617fe29d DB |
80 | bool tokenized; |
81 | ||
47f0bd50 JL |
82 | u8 ifa_proto; |
83 | ||
5c578aed | 84 | struct rcu_head rcu; |
caeaba79 | 85 | struct in6_addr peer_addr; |
1da177e4 LT |
86 | }; |
87 | ||
fd2c3ef7 | 88 | struct ip6_sf_socklist { |
1da177e4 LT |
89 | unsigned int sl_max; |
90 | unsigned int sl_count; | |
882ba1f7 | 91 | struct rcu_head rcu; |
0fa39d6d | 92 | struct in6_addr sl_addr[]; |
1da177e4 LT |
93 | }; |
94 | ||
1da177e4 LT |
95 | #define IP6_SFBLOCK 10 /* allocate this many at once */ |
96 | ||
fd2c3ef7 | 97 | struct ipv6_mc_socklist { |
1da177e4 LT |
98 | struct in6_addr addr; |
99 | int ifindex; | |
14105c19 | 100 | unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */ |
456b61bc | 101 | struct ipv6_mc_socklist __rcu *next; |
882ba1f7 | 102 | struct ip6_sf_socklist __rcu *sflist; |
456b61bc | 103 | struct rcu_head rcu; |
1da177e4 LT |
104 | }; |
105 | ||
fd2c3ef7 | 106 | struct ip6_sf_list { |
4b200e39 | 107 | struct ip6_sf_list __rcu *sf_next; |
1da177e4 LT |
108 | struct in6_addr sf_addr; |
109 | unsigned long sf_count[2]; /* include/exclude counts */ | |
110 | unsigned char sf_gsresp; /* include in g & s response? */ | |
111 | unsigned char sf_oldin; /* change state */ | |
112 | unsigned char sf_crcount; /* retrans. left to send */ | |
4b200e39 | 113 | struct rcu_head rcu; |
1da177e4 LT |
114 | }; |
115 | ||
116 | #define MAF_TIMER_RUNNING 0x01 | |
117 | #define MAF_LAST_REPORTER 0x02 | |
118 | #define MAF_LOADED 0x04 | |
119 | #define MAF_NOREPORT 0x08 | |
120 | #define MAF_GSQUERY 0x10 | |
121 | ||
fd2c3ef7 | 122 | struct ifmcaddr6 { |
1da177e4 LT |
123 | struct in6_addr mca_addr; |
124 | struct inet6_dev *idev; | |
88e2ca30 | 125 | struct ifmcaddr6 __rcu *next; |
4b200e39 TY |
126 | struct ip6_sf_list __rcu *mca_sources; |
127 | struct ip6_sf_list __rcu *mca_tomb; | |
1da177e4 | 128 | unsigned int mca_sfmode; |
246f19d1 | 129 | unsigned char mca_crcount; |
1da177e4 | 130 | unsigned long mca_sfcount[2]; |
2d9a93b4 | 131 | struct delayed_work mca_work; |
95c96174 | 132 | unsigned int mca_flags; |
1da177e4 | 133 | int mca_users; |
d3981bc6 | 134 | refcount_t mca_refcnt; |
1da177e4 LT |
135 | unsigned long mca_cstamp; |
136 | unsigned long mca_tstamp; | |
88e2ca30 | 137 | struct rcu_head rcu; |
1da177e4 LT |
138 | }; |
139 | ||
140 | /* Anycast stuff */ | |
141 | ||
fd2c3ef7 | 142 | struct ipv6_ac_socklist { |
1da177e4 LT |
143 | struct in6_addr acl_addr; |
144 | int acl_ifindex; | |
145 | struct ipv6_ac_socklist *acl_next; | |
146 | }; | |
147 | ||
fd2c3ef7 | 148 | struct ifacaddr6 { |
1da177e4 | 149 | struct in6_addr aca_addr; |
8d1c802b | 150 | struct fib6_info *aca_rt; |
1da177e4 | 151 | struct ifacaddr6 *aca_next; |
2384d025 | 152 | struct hlist_node aca_addr_lst; |
1da177e4 | 153 | int aca_users; |
affa78bc | 154 | refcount_t aca_refcnt; |
1da177e4 LT |
155 | unsigned long aca_cstamp; |
156 | unsigned long aca_tstamp; | |
2384d025 | 157 | struct rcu_head rcu; |
1da177e4 LT |
158 | }; |
159 | ||
160 | #define IFA_HOST IPV6_ADDR_LOOPBACK | |
161 | #define IFA_LINK IPV6_ADDR_LINKLOCAL | |
162 | #define IFA_SITE IPV6_ADDR_SITELOCAL | |
1da177e4 LT |
163 | |
164 | struct ipv6_devstat { | |
165 | struct proc_dir_entry *proc_dir_entry; | |
a11d206d | 166 | DEFINE_SNMP_STAT(struct ipstats_mib, ipv6); |
be281e55 ED |
167 | DEFINE_SNMP_STAT_ATOMIC(struct icmpv6_mib_device, icmpv6dev); |
168 | DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib_device, icmpv6msgdev); | |
1da177e4 LT |
169 | }; |
170 | ||
fd2c3ef7 | 171 | struct inet6_dev { |
502a2ffd | 172 | struct net_device *dev; |
8c727003 | 173 | netdevice_tracker dev_tracker; |
1da177e4 | 174 | |
502a2ffd | 175 | struct list_head addr_list; |
1da177e4 | 176 | |
88e2ca30 TY |
177 | struct ifmcaddr6 __rcu *mc_list; |
178 | struct ifmcaddr6 __rcu *mc_tomb; | |
89225d1c DB |
179 | |
180 | unsigned char mc_qrv; /* Query Robustness Variable */ | |
1da177e4 LT |
181 | unsigned char mc_gq_running; |
182 | unsigned char mc_ifc_count; | |
b173ee48 | 183 | unsigned char mc_dad_count; |
89225d1c DB |
184 | |
185 | unsigned long mc_v1_seen; /* Max time we stay in MLDv1 mode */ | |
186 | unsigned long mc_qi; /* Query Interval */ | |
187 | unsigned long mc_qri; /* Query Response Interval */ | |
4e7e5cfe | 188 | unsigned long mc_maxdelay; |
89225d1c | 189 | |
2d9a93b4 TY |
190 | struct delayed_work mc_gq_work; /* general query work */ |
191 | struct delayed_work mc_ifc_work; /* interface change work */ | |
192 | struct delayed_work mc_dad_work; /* dad complete mc work */ | |
f185de28 TY |
193 | struct delayed_work mc_query_work; /* mld query work */ |
194 | struct delayed_work mc_report_work; /* mld report work */ | |
195 | ||
196 | struct sk_buff_head mc_query_queue; /* mld query queue */ | |
197 | struct sk_buff_head mc_report_queue; /* mld report queue */ | |
198 | ||
199 | spinlock_t mc_query_lock; /* mld query queue lock */ | |
200 | spinlock_t mc_report_lock; /* mld query report lock */ | |
63ed8de4 | 201 | struct mutex mc_lock; /* mld global lock */ |
1da177e4 LT |
202 | |
203 | struct ifacaddr6 *ac_list; | |
204 | rwlock_t lock; | |
1be92460 | 205 | refcount_t refcnt; |
1da177e4 LT |
206 | __u32 if_flags; |
207 | int dead; | |
208 | ||
76506a98 | 209 | u32 desync_factor; |
372e6c8f | 210 | struct list_head tempaddr_list; |
1da177e4 | 211 | |
f53adae4 DB |
212 | struct in6_addr token; |
213 | ||
1da177e4 | 214 | struct neigh_parms *nd_parms; |
1da177e4 LT |
215 | struct ipv6_devconf cnf; |
216 | struct ipv6_devstat stats; | |
b7b1bfce HFS |
217 | |
218 | struct timer_list rs_timer; | |
bd11f074 | 219 | __s32 rs_interval; /* in jiffies */ |
b7b1bfce HFS |
220 | __u8 rs_probes; |
221 | ||
1da177e4 | 222 | unsigned long tstamp; /* ipv6InterfaceTable update timestamp */ |
8814c4b5 | 223 | struct rcu_head rcu; |
49b99da2 RY |
224 | |
225 | unsigned int ra_mtu; | |
1da177e4 LT |
226 | }; |
227 | ||
b71d1d42 | 228 | static inline void ipv6_eth_mc_map(const struct in6_addr *addr, char *buf) |
1da177e4 LT |
229 | { |
230 | /* | |
231 | * +-------+-------+-------+-------+-------+-------+ | |
232 | * | 33 | 33 | DST13 | DST14 | DST15 | DST16 | | |
233 | * +-------+-------+-------+-------+-------+-------+ | |
234 | */ | |
235 | ||
236 | buf[0]= 0x33; | |
237 | buf[1]= 0x33; | |
238 | ||
239 | memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32)); | |
240 | } | |
241 | ||
1da177e4 LT |
242 | static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf) |
243 | { | |
244 | buf[0] = 0x00; | |
245 | } | |
246 | ||
a9e527e3 RM |
247 | static inline void ipv6_ib_mc_map(const struct in6_addr *addr, |
248 | const unsigned char *broadcast, char *buf) | |
1da177e4 | 249 | { |
a9e527e3 RM |
250 | unsigned char scope = broadcast[5] & 0xF; |
251 | ||
1da177e4 LT |
252 | buf[0] = 0; /* Reserved */ |
253 | buf[1] = 0xff; /* Multicast QPN */ | |
254 | buf[2] = 0xff; | |
255 | buf[3] = 0xff; | |
256 | buf[4] = 0xff; | |
a9e527e3 | 257 | buf[5] = 0x10 | scope; /* scope from broadcast address */ |
1da177e4 LT |
258 | buf[6] = 0x60; /* IPv6 signature */ |
259 | buf[7] = 0x1b; | |
a9e527e3 RM |
260 | buf[8] = broadcast[8]; /* P_Key */ |
261 | buf[9] = broadcast[9]; | |
1da177e4 LT |
262 | memcpy(buf + 10, addr->s6_addr + 6, 10); |
263 | } | |
93ca3bb5 TT |
264 | |
265 | static inline int ipv6_ipgre_mc_map(const struct in6_addr *addr, | |
266 | const unsigned char *broadcast, char *buf) | |
267 | { | |
268 | if ((broadcast[0] | broadcast[1] | broadcast[2] | broadcast[3]) != 0) { | |
269 | memcpy(buf, broadcast, 4); | |
270 | } else { | |
271 | /* v4mapped? */ | |
272 | if ((addr->s6_addr32[0] | addr->s6_addr32[1] | | |
273 | (addr->s6_addr32[2] ^ htonl(0x0000ffff))) != 0) | |
274 | return -EINVAL; | |
275 | memcpy(buf, &addr->s6_addr32[3], 4); | |
276 | } | |
277 | return 0; | |
278 | } | |
279 | ||
1da177e4 | 280 | #endif |