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 struct inet6_ifaddr 36 { 37 struct in6_addr addr; 38 __u32 prefix_len; 39 40 __u32 valid_lft; 41 __u32 prefered_lft; 42 unsigned long cstamp; /* created timestamp */ 43 unsigned long tstamp; /* updated timestamp */ 44 atomic_t refcnt; 45 spinlock_t lock; 46 47 __u8 probes; 48 __u8 flags; 49 50 __u16 scope; 51 52 struct timer_list timer; 53 54 struct inet6_dev *idev; 55 struct rt6_info *rt; 56 57 struct inet6_ifaddr *lst_next; /* next addr in addr_lst */ 58 struct inet6_ifaddr *if_next; /* next addr in inet6_dev */ 59 60 #ifdef CONFIG_IPV6_PRIVACY 61 struct inet6_ifaddr *tmp_next; /* next addr in tempaddr_lst */ 62 struct inet6_ifaddr *ifpub; 63 int regen_count; 64 #endif 65 66 int dead; 67 }; 68 69 struct ip6_sf_socklist 70 { 71 unsigned int sl_max; 72 unsigned int sl_count; 73 struct in6_addr sl_addr[0]; 74 }; 75 76 #define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \ 77 (count) * sizeof(struct in6_addr)) 78 79 #define IP6_SFBLOCK 10 /* allocate this many at once */ 80 81 struct ipv6_mc_socklist 82 { 83 struct in6_addr addr; 84 int ifindex; 85 struct ipv6_mc_socklist *next; 86 rwlock_t sflock; 87 unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */ 88 struct ip6_sf_socklist *sflist; 89 }; 90 91 struct ip6_sf_list 92 { 93 struct ip6_sf_list *sf_next; 94 struct in6_addr sf_addr; 95 unsigned long sf_count[2]; /* include/exclude counts */ 96 unsigned char sf_gsresp; /* include in g & s response? */ 97 unsigned char sf_oldin; /* change state */ 98 unsigned char sf_crcount; /* retrans. left to send */ 99 }; 100 101 #define MAF_TIMER_RUNNING 0x01 102 #define MAF_LAST_REPORTER 0x02 103 #define MAF_LOADED 0x04 104 #define MAF_NOREPORT 0x08 105 #define MAF_GSQUERY 0x10 106 107 struct ifmcaddr6 108 { 109 struct in6_addr mca_addr; 110 struct inet6_dev *idev; 111 struct ifmcaddr6 *next; 112 struct ip6_sf_list *mca_sources; 113 struct ip6_sf_list *mca_tomb; 114 unsigned int mca_sfmode; 115 unsigned char mca_crcount; 116 unsigned long mca_sfcount[2]; 117 struct timer_list mca_timer; 118 unsigned mca_flags; 119 int mca_users; 120 atomic_t mca_refcnt; 121 spinlock_t mca_lock; 122 unsigned long mca_cstamp; 123 unsigned long mca_tstamp; 124 }; 125 126 /* Anycast stuff */ 127 128 struct ipv6_ac_socklist 129 { 130 struct in6_addr acl_addr; 131 int acl_ifindex; 132 struct ipv6_ac_socklist *acl_next; 133 }; 134 135 struct ifacaddr6 136 { 137 struct in6_addr aca_addr; 138 struct inet6_dev *aca_idev; 139 struct rt6_info *aca_rt; 140 struct ifacaddr6 *aca_next; 141 int aca_users; 142 atomic_t aca_refcnt; 143 spinlock_t aca_lock; 144 unsigned long aca_cstamp; 145 unsigned long aca_tstamp; 146 }; 147 148 #define IFA_HOST IPV6_ADDR_LOOPBACK 149 #define IFA_LINK IPV6_ADDR_LINKLOCAL 150 #define IFA_SITE IPV6_ADDR_SITELOCAL 151 152 struct ipv6_devstat { 153 struct proc_dir_entry *proc_dir_entry; 154 DEFINE_SNMP_STAT(struct ipstats_mib, ipv6); 155 DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6); 156 DEFINE_SNMP_STAT(struct icmpv6msg_mib, icmpv6msg); 157 }; 158 159 struct inet6_dev 160 { 161 struct net_device *dev; 162 163 struct inet6_ifaddr *addr_list; 164 165 struct ifmcaddr6 *mc_list; 166 struct ifmcaddr6 *mc_tomb; 167 rwlock_t mc_lock; 168 unsigned char mc_qrv; 169 unsigned char mc_gq_running; 170 unsigned char mc_ifc_count; 171 unsigned long mc_v1_seen; 172 unsigned long mc_maxdelay; 173 struct timer_list mc_gq_timer; /* general query timer */ 174 struct timer_list mc_ifc_timer; /* interface change timer */ 175 176 struct ifacaddr6 *ac_list; 177 rwlock_t lock; 178 atomic_t refcnt; 179 __u32 if_flags; 180 int dead; 181 182 #ifdef CONFIG_IPV6_PRIVACY 183 u8 rndid[8]; 184 struct timer_list regen_timer; 185 struct inet6_ifaddr *tempaddr_list; 186 #endif 187 188 struct neigh_parms *nd_parms; 189 struct inet6_dev *next; 190 struct ipv6_devconf cnf; 191 struct ipv6_devstat stats; 192 unsigned long tstamp; /* ipv6InterfaceTable update timestamp */ 193 struct rcu_head rcu; 194 }; 195 196 static inline void ipv6_eth_mc_map(struct in6_addr *addr, char *buf) 197 { 198 /* 199 * +-------+-------+-------+-------+-------+-------+ 200 * | 33 | 33 | DST13 | DST14 | DST15 | DST16 | 201 * +-------+-------+-------+-------+-------+-------+ 202 */ 203 204 buf[0]= 0x33; 205 buf[1]= 0x33; 206 207 memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32)); 208 } 209 210 static inline void ipv6_tr_mc_map(struct in6_addr *addr, char *buf) 211 { 212 /* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */ 213 214 if (((addr->s6_addr[0] == 0xFF) && 215 ((addr->s6_addr[1] == 0x01) || (addr->s6_addr[1] == 0x02)) && 216 (addr->s6_addr16[1] == 0) && 217 (addr->s6_addr32[1] == 0) && 218 (addr->s6_addr32[2] == 0) && 219 (addr->s6_addr16[6] == 0) && 220 (addr->s6_addr[15] == 1)) || 221 ((addr->s6_addr[0] == 0xFF) && 222 (addr->s6_addr[1] == 0x02) && 223 (addr->s6_addr16[1] == 0) && 224 (addr->s6_addr32[1] == 0) && 225 (addr->s6_addr16[4] == 0) && 226 (addr->s6_addr[10] == 0) && 227 (addr->s6_addr[11] == 1) && 228 (addr->s6_addr[12] == 0xff))) 229 { 230 buf[0]=0xC0; 231 buf[1]=0x00; 232 buf[2]=0x01; 233 buf[3]=0x00; 234 buf[4]=0x00; 235 buf[5]=0x00; 236 /* All routers FF0x::2 */ 237 } else if ((addr->s6_addr[0] ==0xff) && 238 ((addr->s6_addr[1] & 0xF0) == 0) && 239 (addr->s6_addr16[1] == 0) && 240 (addr->s6_addr32[1] == 0) && 241 (addr->s6_addr32[2] == 0) && 242 (addr->s6_addr16[6] == 0) && 243 (addr->s6_addr[15] == 2)) 244 { 245 buf[0]=0xC0; 246 buf[1]=0x00; 247 buf[2]=0x02; 248 buf[3]=0x00; 249 buf[4]=0x00; 250 buf[5]=0x00; 251 } else { 252 unsigned char i ; 253 254 i = addr->s6_addr[15] & 7 ; 255 buf[0]=0xC0; 256 buf[1]=0x00; 257 buf[2]=0x00; 258 buf[3]=0x01 << i ; 259 buf[4]=0x00; 260 buf[5]=0x00; 261 } 262 } 263 264 static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf) 265 { 266 buf[0] = 0x00; 267 } 268 269 static inline void ipv6_ib_mc_map(const struct in6_addr *addr, 270 const unsigned char *broadcast, char *buf) 271 { 272 unsigned char scope = broadcast[5] & 0xF; 273 274 buf[0] = 0; /* Reserved */ 275 buf[1] = 0xff; /* Multicast QPN */ 276 buf[2] = 0xff; 277 buf[3] = 0xff; 278 buf[4] = 0xff; 279 buf[5] = 0x10 | scope; /* scope from broadcast address */ 280 buf[6] = 0x60; /* IPv6 signature */ 281 buf[7] = 0x1b; 282 buf[8] = broadcast[8]; /* P_Key */ 283 buf[9] = broadcast[9]; 284 memcpy(buf + 10, addr->s6_addr + 6, 10); 285 } 286 #endif 287 #endif 288