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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> | |
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 | |
27 | #define IF_READY 0x80000000 | |
28 | ||
29 | /* prefix flags */ | |
30 | #define IF_PREFIX_ONLINK 0x01 | |
31 | #define IF_PREFIX_AUTOCONF 0x02 | |
32 | ||
33 | enum { | |
34 | INET6_IFADDR_STATE_PREDAD, | |
35 | INET6_IFADDR_STATE_DAD, | |
36 | INET6_IFADDR_STATE_POSTDAD, | |
37 | INET6_IFADDR_STATE_ERRDAD, | |
38 | INET6_IFADDR_STATE_DEAD, | |
39 | }; | |
40 | ||
41 | struct inet6_ifaddr { | |
42 | struct in6_addr addr; | |
43 | __u32 prefix_len; | |
44 | ||
45 | /* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */ | |
46 | __u32 valid_lft; | |
47 | __u32 prefered_lft; | |
48 | atomic_t refcnt; | |
49 | spinlock_t lock; | |
50 | ||
51 | int state; | |
52 | ||
53 | __u32 flags; | |
54 | __u8 dad_probes; | |
55 | __u8 stable_privacy_retry; | |
56 | ||
57 | __u16 scope; | |
58 | ||
59 | unsigned long cstamp; /* created timestamp */ | |
60 | unsigned long tstamp; /* updated timestamp */ | |
61 | ||
62 | struct delayed_work dad_work; | |
63 | ||
64 | struct inet6_dev *idev; | |
65 | struct rt6_info *rt; | |
66 | ||
67 | struct hlist_node addr_lst; | |
68 | struct list_head if_list; | |
69 | ||
70 | struct list_head tmp_list; | |
71 | struct inet6_ifaddr *ifpub; | |
72 | int regen_count; | |
73 | ||
74 | bool tokenized; | |
75 | ||
76 | struct rcu_head rcu; | |
77 | struct in6_addr peer_addr; | |
78 | }; | |
79 | ||
80 | struct ip6_sf_socklist { | |
81 | 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 | ||
91 | struct ipv6_mc_socklist { | |
92 | struct in6_addr addr; | |
93 | int ifindex; | |
94 | struct ipv6_mc_socklist __rcu *next; | |
95 | rwlock_t sflock; | |
96 | unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */ | |
97 | struct ip6_sf_socklist *sflist; | |
98 | struct rcu_head rcu; | |
99 | }; | |
100 | ||
101 | struct ip6_sf_list { | |
102 | 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 | ||
116 | struct ifmcaddr6 { | |
117 | 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; | |
123 | unsigned char mca_crcount; | |
124 | unsigned long mca_sfcount[2]; | |
125 | struct timer_list mca_timer; | |
126 | unsigned int mca_flags; | |
127 | int mca_users; | |
128 | atomic_t mca_refcnt; | |
129 | spinlock_t mca_lock; | |
130 | unsigned long mca_cstamp; | |
131 | unsigned long mca_tstamp; | |
132 | }; | |
133 | ||
134 | /* Anycast stuff */ | |
135 | ||
136 | struct ipv6_ac_socklist { | |
137 | struct in6_addr acl_addr; | |
138 | int acl_ifindex; | |
139 | struct ipv6_ac_socklist *acl_next; | |
140 | }; | |
141 | ||
142 | struct ifacaddr6 { | |
143 | 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; | |
149 | 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 | |
156 | ||
157 | struct ipv6_devstat { | |
158 | struct proc_dir_entry *proc_dir_entry; | |
159 | DEFINE_SNMP_STAT(struct ipstats_mib, ipv6); | |
160 | DEFINE_SNMP_STAT_ATOMIC(struct icmpv6_mib_device, icmpv6dev); | |
161 | DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib_device, icmpv6msgdev); | |
162 | }; | |
163 | ||
164 | struct inet6_dev { | |
165 | struct net_device *dev; | |
166 | ||
167 | struct list_head addr_list; | |
168 | ||
169 | struct ifmcaddr6 *mc_list; | |
170 | struct ifmcaddr6 *mc_tomb; | |
171 | spinlock_t mc_lock; | |
172 | ||
173 | unsigned char mc_qrv; /* Query Robustness Variable */ | |
174 | unsigned char mc_gq_running; | |
175 | unsigned char mc_ifc_count; | |
176 | unsigned char mc_dad_count; | |
177 | ||
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 */ | |
181 | unsigned long mc_maxdelay; | |
182 | ||
183 | struct timer_list mc_gq_timer; /* general query timer */ | |
184 | struct timer_list mc_ifc_timer; /* interface change timer */ | |
185 | struct timer_list mc_dad_timer; /* dad complete mc timer */ | |
186 | ||
187 | struct ifacaddr6 *ac_list; | |
188 | rwlock_t lock; | |
189 | atomic_t refcnt; | |
190 | __u32 if_flags; | |
191 | int dead; | |
192 | ||
193 | u8 rndid[8]; | |
194 | struct timer_list regen_timer; | |
195 | struct list_head tempaddr_list; | |
196 | ||
197 | struct in6_addr token; | |
198 | ||
199 | struct neigh_parms *nd_parms; | |
200 | struct ipv6_devconf cnf; | |
201 | struct ipv6_devstat stats; | |
202 | ||
203 | struct timer_list rs_timer; | |
204 | __u8 rs_probes; | |
205 | ||
206 | __u8 addr_gen_mode; | |
207 | unsigned long tstamp; /* ipv6InterfaceTable update timestamp */ | |
208 | struct rcu_head rcu; | |
209 | }; | |
210 | ||
211 | static inline void ipv6_eth_mc_map(const struct in6_addr *addr, char *buf) | |
212 | { | |
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 | ||
225 | static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf) | |
226 | { | |
227 | buf[0] = 0x00; | |
228 | } | |
229 | ||
230 | static inline void ipv6_ib_mc_map(const struct in6_addr *addr, | |
231 | const unsigned char *broadcast, char *buf) | |
232 | { | |
233 | unsigned char scope = broadcast[5] & 0xF; | |
234 | ||
235 | buf[0] = 0; /* Reserved */ | |
236 | buf[1] = 0xff; /* Multicast QPN */ | |
237 | buf[2] = 0xff; | |
238 | buf[3] = 0xff; | |
239 | buf[4] = 0xff; | |
240 | buf[5] = 0x10 | scope; /* scope from broadcast address */ | |
241 | buf[6] = 0x60; /* IPv6 signature */ | |
242 | buf[7] = 0x1b; | |
243 | buf[8] = broadcast[8]; /* P_Key */ | |
244 | buf[9] = broadcast[9]; | |
245 | memcpy(buf + 10, addr->s6_addr + 6, 10); | |
246 | } | |
247 | ||
248 | static 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 | ||
263 | #endif |