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