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 #ifdef __KERNEL__ 34 35 enum { 36 INET6_IFADDR_STATE_DAD, 37 INET6_IFADDR_STATE_POSTDAD, 38 INET6_IFADDR_STATE_UP, 39 INET6_IFADDR_STATE_DEAD, 40 }; 41 42 struct inet6_ifaddr { 43 struct in6_addr addr; 44 __u32 prefix_len; 45 46 __u32 valid_lft; 47 __u32 prefered_lft; 48 atomic_t refcnt; 49 spinlock_t lock; 50 spinlock_t state_lock; 51 52 int state; 53 54 __u8 probes; 55 __u8 flags; 56 57 __u16 scope; 58 59 unsigned long cstamp; /* created timestamp */ 60 unsigned long tstamp; /* updated timestamp */ 61 62 struct timer_list timer; 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 #ifdef CONFIG_IPV6_PRIVACY 71 struct list_head tmp_list; 72 struct inet6_ifaddr *ifpub; 73 int regen_count; 74 #endif 75 struct rcu_head rcu; 76 }; 77 78 struct ip6_sf_socklist { 79 unsigned int sl_max; 80 unsigned int sl_count; 81 struct in6_addr sl_addr[0]; 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 89 struct ipv6_mc_socklist { 90 struct in6_addr addr; 91 int ifindex; 92 struct ipv6_mc_socklist __rcu *next; 93 rwlock_t sflock; 94 unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */ 95 struct ip6_sf_socklist *sflist; 96 struct rcu_head rcu; 97 }; 98 99 struct ip6_sf_list { 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 113 114 struct ifmcaddr6 { 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; 121 unsigned char mca_crcount; 122 unsigned long mca_sfcount[2]; 123 struct timer_list mca_timer; 124 unsigned mca_flags; 125 int mca_users; 126 atomic_t mca_refcnt; 127 spinlock_t mca_lock; 128 unsigned long mca_cstamp; 129 unsigned long mca_tstamp; 130 }; 131 132 /* Anycast stuff */ 133 134 struct ipv6_ac_socklist { 135 struct in6_addr acl_addr; 136 int acl_ifindex; 137 struct ipv6_ac_socklist *acl_next; 138 }; 139 140 struct ifacaddr6 { 141 struct in6_addr aca_addr; 142 struct inet6_dev *aca_idev; 143 struct rt6_info *aca_rt; 144 struct ifacaddr6 *aca_next; 145 int aca_users; 146 atomic_t aca_refcnt; 147 spinlock_t aca_lock; 148 unsigned long aca_cstamp; 149 unsigned long aca_tstamp; 150 }; 151 152 #define IFA_HOST IPV6_ADDR_LOOPBACK 153 #define IFA_LINK IPV6_ADDR_LINKLOCAL 154 #define IFA_SITE IPV6_ADDR_SITELOCAL 155 156 struct ipv6_devstat { 157 struct proc_dir_entry *proc_dir_entry; 158 DEFINE_SNMP_STAT(struct ipstats_mib, ipv6); 159 DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6); 160 DEFINE_SNMP_STAT(struct icmpv6msg_mib, icmpv6msg); 161 }; 162 163 struct inet6_dev { 164 struct net_device *dev; 165 166 struct list_head addr_list; 167 168 struct ifmcaddr6 *mc_list; 169 struct ifmcaddr6 *mc_tomb; 170 spinlock_t mc_lock; 171 unsigned char mc_qrv; 172 unsigned char mc_gq_running; 173 unsigned char mc_ifc_count; 174 unsigned long mc_v1_seen; 175 unsigned long mc_maxdelay; 176 struct timer_list mc_gq_timer; /* general query timer */ 177 struct timer_list mc_ifc_timer; /* interface change timer */ 178 179 struct ifacaddr6 *ac_list; 180 rwlock_t lock; 181 atomic_t refcnt; 182 __u32 if_flags; 183 int dead; 184 185 #ifdef CONFIG_IPV6_PRIVACY 186 u8 rndid[8]; 187 struct timer_list regen_timer; 188 struct list_head tempaddr_list; 189 #endif 190 191 struct neigh_parms *nd_parms; 192 struct inet6_dev *next; 193 struct ipv6_devconf cnf; 194 struct ipv6_devstat stats; 195 unsigned long tstamp; /* ipv6InterfaceTable update timestamp */ 196 struct rcu_head rcu; 197 }; 198 199 static inline void ipv6_eth_mc_map(struct in6_addr *addr, char *buf) 200 { 201 /* 202 * +-------+-------+-------+-------+-------+-------+ 203 * | 33 | 33 | DST13 | DST14 | DST15 | DST16 | 204 * +-------+-------+-------+-------+-------+-------+ 205 */ 206 207 buf[0]= 0x33; 208 buf[1]= 0x33; 209 210 memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32)); 211 } 212 213 static inline void ipv6_tr_mc_map(struct in6_addr *addr, char *buf) 214 { 215 /* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */ 216 217 if (((addr->s6_addr[0] == 0xFF) && 218 ((addr->s6_addr[1] == 0x01) || (addr->s6_addr[1] == 0x02)) && 219 (addr->s6_addr16[1] == 0) && 220 (addr->s6_addr32[1] == 0) && 221 (addr->s6_addr32[2] == 0) && 222 (addr->s6_addr16[6] == 0) && 223 (addr->s6_addr[15] == 1)) || 224 ((addr->s6_addr[0] == 0xFF) && 225 (addr->s6_addr[1] == 0x02) && 226 (addr->s6_addr16[1] == 0) && 227 (addr->s6_addr32[1] == 0) && 228 (addr->s6_addr16[4] == 0) && 229 (addr->s6_addr[10] == 0) && 230 (addr->s6_addr[11] == 1) && 231 (addr->s6_addr[12] == 0xff))) 232 { 233 buf[0]=0xC0; 234 buf[1]=0x00; 235 buf[2]=0x01; 236 buf[3]=0x00; 237 buf[4]=0x00; 238 buf[5]=0x00; 239 /* All routers FF0x::2 */ 240 } else if ((addr->s6_addr[0] ==0xff) && 241 ((addr->s6_addr[1] & 0xF0) == 0) && 242 (addr->s6_addr16[1] == 0) && 243 (addr->s6_addr32[1] == 0) && 244 (addr->s6_addr32[2] == 0) && 245 (addr->s6_addr16[6] == 0) && 246 (addr->s6_addr[15] == 2)) 247 { 248 buf[0]=0xC0; 249 buf[1]=0x00; 250 buf[2]=0x02; 251 buf[3]=0x00; 252 buf[4]=0x00; 253 buf[5]=0x00; 254 } else { 255 unsigned char i ; 256 257 i = addr->s6_addr[15] & 7 ; 258 buf[0]=0xC0; 259 buf[1]=0x00; 260 buf[2]=0x00; 261 buf[3]=0x01 << i ; 262 buf[4]=0x00; 263 buf[5]=0x00; 264 } 265 } 266 267 static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf) 268 { 269 buf[0] = 0x00; 270 } 271 272 static inline void ipv6_ib_mc_map(const struct in6_addr *addr, 273 const unsigned char *broadcast, char *buf) 274 { 275 unsigned char scope = broadcast[5] & 0xF; 276 277 buf[0] = 0; /* Reserved */ 278 buf[1] = 0xff; /* Multicast QPN */ 279 buf[2] = 0xff; 280 buf[3] = 0xff; 281 buf[4] = 0xff; 282 buf[5] = 0x10 | scope; /* scope from broadcast address */ 283 buf[6] = 0x60; /* IPv6 signature */ 284 buf[7] = 0x1b; 285 buf[8] = broadcast[8]; /* P_Key */ 286 buf[9] = broadcast[9]; 287 memcpy(buf + 10, addr->s6_addr + 6, 10); 288 } 289 #endif 290 #endif 291