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 28 /* prefix flags */ 29 #define IF_PREFIX_ONLINK 0x01 30 #define IF_PREFIX_AUTOCONF 0x02 31 32 #ifdef __KERNEL__ 33 34 struct inet6_ifaddr 35 { 36 struct in6_addr addr; 37 __u32 prefix_len; 38 39 __u32 valid_lft; 40 __u32 prefered_lft; 41 unsigned long cstamp; /* created timestamp */ 42 unsigned long tstamp; /* updated timestamp */ 43 atomic_t refcnt; 44 spinlock_t lock; 45 46 __u8 probes; 47 __u8 flags; 48 49 __u16 scope; 50 51 struct timer_list timer; 52 53 struct inet6_dev *idev; 54 struct rt6_info *rt; 55 56 struct inet6_ifaddr *lst_next; /* next addr in addr_lst */ 57 struct inet6_ifaddr *if_next; /* next addr in inet6_dev */ 58 59 #ifdef CONFIG_IPV6_PRIVACY 60 struct inet6_ifaddr *tmp_next; /* next addr in tempaddr_lst */ 61 struct inet6_ifaddr *ifpub; 62 int regen_count; 63 #endif 64 65 int dead; 66 }; 67 68 struct ip6_sf_socklist 69 { 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 { 82 struct in6_addr addr; 83 int ifindex; 84 struct ipv6_mc_socklist *next; 85 unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */ 86 struct ip6_sf_socklist *sflist; 87 }; 88 89 struct ip6_sf_list 90 { 91 struct ip6_sf_list *sf_next; 92 struct in6_addr sf_addr; 93 unsigned long sf_count[2]; /* include/exclude counts */ 94 unsigned char sf_gsresp; /* include in g & s response? */ 95 unsigned char sf_oldin; /* change state */ 96 unsigned char sf_crcount; /* retrans. left to send */ 97 }; 98 99 #define MAF_TIMER_RUNNING 0x01 100 #define MAF_LAST_REPORTER 0x02 101 #define MAF_LOADED 0x04 102 #define MAF_NOREPORT 0x08 103 #define MAF_GSQUERY 0x10 104 105 struct ifmcaddr6 106 { 107 struct in6_addr mca_addr; 108 struct inet6_dev *idev; 109 struct ifmcaddr6 *next; 110 struct ip6_sf_list *mca_sources; 111 struct ip6_sf_list *mca_tomb; 112 unsigned int mca_sfmode; 113 unsigned long mca_sfcount[2]; 114 struct timer_list mca_timer; 115 unsigned mca_flags; 116 int mca_users; 117 atomic_t mca_refcnt; 118 spinlock_t mca_lock; 119 unsigned char mca_crcount; 120 unsigned long mca_cstamp; 121 unsigned long mca_tstamp; 122 }; 123 124 /* Anycast stuff */ 125 126 struct ipv6_ac_socklist 127 { 128 struct in6_addr acl_addr; 129 int acl_ifindex; 130 struct ipv6_ac_socklist *acl_next; 131 }; 132 133 struct ifacaddr6 134 { 135 struct in6_addr aca_addr; 136 struct inet6_dev *aca_idev; 137 struct rt6_info *aca_rt; 138 struct ifacaddr6 *aca_next; 139 int aca_users; 140 atomic_t aca_refcnt; 141 spinlock_t aca_lock; 142 unsigned long aca_cstamp; 143 unsigned long aca_tstamp; 144 }; 145 146 #define IFA_HOST IPV6_ADDR_LOOPBACK 147 #define IFA_LINK IPV6_ADDR_LINKLOCAL 148 #define IFA_SITE IPV6_ADDR_SITELOCAL 149 #define IFA_GLOBAL 0x0000U 150 151 struct ipv6_devstat { 152 struct proc_dir_entry *proc_dir_entry; 153 DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6); 154 }; 155 156 struct inet6_dev 157 { 158 struct net_device *dev; 159 160 struct inet6_ifaddr *addr_list; 161 162 struct ifmcaddr6 *mc_list; 163 struct ifmcaddr6 *mc_tomb; 164 rwlock_t mc_lock; 165 unsigned long mc_v1_seen; 166 unsigned long mc_maxdelay; 167 unsigned char mc_qrv; 168 unsigned char mc_gq_running; 169 unsigned char mc_ifc_count; 170 struct timer_list mc_gq_timer; /* general query timer */ 171 struct timer_list mc_ifc_timer; /* interface change timer */ 172 173 struct ifacaddr6 *ac_list; 174 rwlock_t lock; 175 atomic_t refcnt; 176 __u32 if_flags; 177 int dead; 178 179 #ifdef CONFIG_IPV6_PRIVACY 180 u8 rndid[8]; 181 u8 entropy[8]; 182 struct timer_list regen_timer; 183 struct inet6_ifaddr *tempaddr_list; 184 __u8 work_eui64[8]; 185 __u8 work_digest[16]; 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 }; 194 195 extern struct ipv6_devconf ipv6_devconf; 196 197 static inline void ipv6_eth_mc_map(struct in6_addr *addr, char *buf) 198 { 199 /* 200 * +-------+-------+-------+-------+-------+-------+ 201 * | 33 | 33 | DST13 | DST14 | DST15 | DST16 | 202 * +-------+-------+-------+-------+-------+-------+ 203 */ 204 205 buf[0]= 0x33; 206 buf[1]= 0x33; 207 208 memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32)); 209 } 210 211 static inline void ipv6_tr_mc_map(struct in6_addr *addr, char *buf) 212 { 213 /* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */ 214 215 if (((addr->s6_addr[0] == 0xFF) && 216 ((addr->s6_addr[1] == 0x01) || (addr->s6_addr[1] == 0x02)) && 217 (addr->s6_addr16[1] == 0) && 218 (addr->s6_addr32[1] == 0) && 219 (addr->s6_addr32[2] == 0) && 220 (addr->s6_addr16[6] == 0) && 221 (addr->s6_addr[15] == 1)) || 222 ((addr->s6_addr[0] == 0xFF) && 223 (addr->s6_addr[1] == 0x02) && 224 (addr->s6_addr16[1] == 0) && 225 (addr->s6_addr32[1] == 0) && 226 (addr->s6_addr16[4] == 0) && 227 (addr->s6_addr[10] == 0) && 228 (addr->s6_addr[11] == 1) && 229 (addr->s6_addr[12] == 0xff))) 230 { 231 buf[0]=0xC0; 232 buf[1]=0x00; 233 buf[2]=0x01; 234 buf[3]=0x00; 235 buf[4]=0x00; 236 buf[5]=0x00; 237 /* All routers FF0x::2 */ 238 } else if ((addr->s6_addr[0] ==0xff) && 239 ((addr->s6_addr[1] & 0xF0) == 0) && 240 (addr->s6_addr16[1] == 0) && 241 (addr->s6_addr32[1] == 0) && 242 (addr->s6_addr32[2] == 0) && 243 (addr->s6_addr16[6] == 0) && 244 (addr->s6_addr[15] == 2)) 245 { 246 buf[0]=0xC0; 247 buf[1]=0x00; 248 buf[2]=0x02; 249 buf[3]=0x00; 250 buf[4]=0x00; 251 buf[5]=0x00; 252 } else { 253 unsigned char i ; 254 255 i = addr->s6_addr[15] & 7 ; 256 buf[0]=0xC0; 257 buf[1]=0x00; 258 buf[2]=0x00; 259 buf[3]=0x01 << i ; 260 buf[4]=0x00; 261 buf[5]=0x00; 262 } 263 } 264 265 static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf) 266 { 267 buf[0] = 0x00; 268 } 269 270 static inline void ipv6_ib_mc_map(struct in6_addr *addr, char *buf) 271 { 272 buf[0] = 0; /* Reserved */ 273 buf[1] = 0xff; /* Multicast QPN */ 274 buf[2] = 0xff; 275 buf[3] = 0xff; 276 buf[4] = 0xff; 277 buf[5] = 0x12; /* link local scope */ 278 buf[6] = 0x60; /* IPv6 signature */ 279 buf[7] = 0x1b; 280 buf[8] = 0; /* P_Key */ 281 buf[9] = 0; 282 memcpy(buf + 10, addr->s6_addr + 6, 10); 283 } 284 #endif 285 #endif 286