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 *next; 93 rwlock_t sflock; 94 unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */ 95 struct ip6_sf_socklist *sflist; 96 }; 97 98 struct ip6_sf_list { 99 struct ip6_sf_list *sf_next; 100 struct in6_addr sf_addr; 101 unsigned long sf_count[2]; /* include/exclude counts */ 102 unsigned char sf_gsresp; /* include in g & s response? */ 103 unsigned char sf_oldin; /* change state */ 104 unsigned char sf_crcount; /* retrans. left to send */ 105 }; 106 107 #define MAF_TIMER_RUNNING 0x01 108 #define MAF_LAST_REPORTER 0x02 109 #define MAF_LOADED 0x04 110 #define MAF_NOREPORT 0x08 111 #define MAF_GSQUERY 0x10 112 113 struct ifmcaddr6 { 114 struct in6_addr mca_addr; 115 struct inet6_dev *idev; 116 struct ifmcaddr6 *next; 117 struct ip6_sf_list *mca_sources; 118 struct ip6_sf_list *mca_tomb; 119 unsigned int mca_sfmode; 120 unsigned char mca_crcount; 121 unsigned long mca_sfcount[2]; 122 struct timer_list mca_timer; 123 unsigned mca_flags; 124 int mca_users; 125 atomic_t mca_refcnt; 126 spinlock_t mca_lock; 127 unsigned long mca_cstamp; 128 unsigned long mca_tstamp; 129 }; 130 131 /* Anycast stuff */ 132 133 struct ipv6_ac_socklist { 134 struct in6_addr acl_addr; 135 int acl_ifindex; 136 struct ipv6_ac_socklist *acl_next; 137 }; 138 139 struct ifacaddr6 { 140 struct in6_addr aca_addr; 141 struct inet6_dev *aca_idev; 142 struct rt6_info *aca_rt; 143 struct ifacaddr6 *aca_next; 144 int aca_users; 145 atomic_t aca_refcnt; 146 spinlock_t aca_lock; 147 unsigned long aca_cstamp; 148 unsigned long aca_tstamp; 149 }; 150 151 #define IFA_HOST IPV6_ADDR_LOOPBACK 152 #define IFA_LINK IPV6_ADDR_LINKLOCAL 153 #define IFA_SITE IPV6_ADDR_SITELOCAL 154 155 struct ipv6_devstat { 156 struct proc_dir_entry *proc_dir_entry; 157 DEFINE_SNMP_STAT(struct ipstats_mib, ipv6); 158 DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6); 159 DEFINE_SNMP_STAT(struct icmpv6msg_mib, icmpv6msg); 160 }; 161 162 struct inet6_dev { 163 struct net_device *dev; 164 165 struct list_head addr_list; 166 167 struct ifmcaddr6 *mc_list; 168 struct ifmcaddr6 *mc_tomb; 169 spinlock_t mc_lock; 170 unsigned char mc_qrv; 171 unsigned char mc_gq_running; 172 unsigned char mc_ifc_count; 173 unsigned long mc_v1_seen; 174 unsigned long mc_maxdelay; 175 struct timer_list mc_gq_timer; /* general query timer */ 176 struct timer_list mc_ifc_timer; /* interface change timer */ 177 178 struct ifacaddr6 *ac_list; 179 rwlock_t lock; 180 atomic_t refcnt; 181 __u32 if_flags; 182 int dead; 183 184 #ifdef CONFIG_IPV6_PRIVACY 185 u8 rndid[8]; 186 struct timer_list regen_timer; 187 struct list_head tempaddr_list; 188 #endif 189 190 struct neigh_parms *nd_parms; 191 struct inet6_dev *next; 192 struct ipv6_devconf cnf; 193 struct ipv6_devstat stats; 194 unsigned long tstamp; /* ipv6InterfaceTable update timestamp */ 195 struct rcu_head rcu; 196 }; 197 198 static inline void ipv6_eth_mc_map(struct in6_addr *addr, char *buf) 199 { 200 /* 201 * +-------+-------+-------+-------+-------+-------+ 202 * | 33 | 33 | DST13 | DST14 | DST15 | DST16 | 203 * +-------+-------+-------+-------+-------+-------+ 204 */ 205 206 buf[0]= 0x33; 207 buf[1]= 0x33; 208 209 memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32)); 210 } 211 212 static inline void ipv6_tr_mc_map(struct in6_addr *addr, char *buf) 213 { 214 /* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */ 215 216 if (((addr->s6_addr[0] == 0xFF) && 217 ((addr->s6_addr[1] == 0x01) || (addr->s6_addr[1] == 0x02)) && 218 (addr->s6_addr16[1] == 0) && 219 (addr->s6_addr32[1] == 0) && 220 (addr->s6_addr32[2] == 0) && 221 (addr->s6_addr16[6] == 0) && 222 (addr->s6_addr[15] == 1)) || 223 ((addr->s6_addr[0] == 0xFF) && 224 (addr->s6_addr[1] == 0x02) && 225 (addr->s6_addr16[1] == 0) && 226 (addr->s6_addr32[1] == 0) && 227 (addr->s6_addr16[4] == 0) && 228 (addr->s6_addr[10] == 0) && 229 (addr->s6_addr[11] == 1) && 230 (addr->s6_addr[12] == 0xff))) 231 { 232 buf[0]=0xC0; 233 buf[1]=0x00; 234 buf[2]=0x01; 235 buf[3]=0x00; 236 buf[4]=0x00; 237 buf[5]=0x00; 238 /* All routers FF0x::2 */ 239 } else if ((addr->s6_addr[0] ==0xff) && 240 ((addr->s6_addr[1] & 0xF0) == 0) && 241 (addr->s6_addr16[1] == 0) && 242 (addr->s6_addr32[1] == 0) && 243 (addr->s6_addr32[2] == 0) && 244 (addr->s6_addr16[6] == 0) && 245 (addr->s6_addr[15] == 2)) 246 { 247 buf[0]=0xC0; 248 buf[1]=0x00; 249 buf[2]=0x02; 250 buf[3]=0x00; 251 buf[4]=0x00; 252 buf[5]=0x00; 253 } else { 254 unsigned char i ; 255 256 i = addr->s6_addr[15] & 7 ; 257 buf[0]=0xC0; 258 buf[1]=0x00; 259 buf[2]=0x00; 260 buf[3]=0x01 << i ; 261 buf[4]=0x00; 262 buf[5]=0x00; 263 } 264 } 265 266 static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf) 267 { 268 buf[0] = 0x00; 269 } 270 271 static inline void ipv6_ib_mc_map(const struct in6_addr *addr, 272 const unsigned char *broadcast, char *buf) 273 { 274 unsigned char scope = broadcast[5] & 0xF; 275 276 buf[0] = 0; /* Reserved */ 277 buf[1] = 0xff; /* Multicast QPN */ 278 buf[2] = 0xff; 279 buf[3] = 0xff; 280 buf[4] = 0xff; 281 buf[5] = 0x10 | scope; /* scope from broadcast address */ 282 buf[6] = 0x60; /* IPv6 signature */ 283 buf[7] = 0x1b; 284 buf[8] = broadcast[8]; /* P_Key */ 285 buf[9] = broadcast[9]; 286 memcpy(buf + 10, addr->s6_addr + 6, 10); 287 } 288 #endif 289 #endif 290