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 35struct 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 69struct 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 81struct 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 91struct 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 107struct 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 long mca_sfcount[2]; 116 struct timer_list mca_timer; 117 unsigned mca_flags; 118 int mca_users; 119 atomic_t mca_refcnt; 120 spinlock_t mca_lock; 121 unsigned char mca_crcount; 122 unsigned long mca_cstamp; 123 unsigned long mca_tstamp; 124}; 125 126/* Anycast stuff */ 127 128struct ipv6_ac_socklist 129{ 130 struct in6_addr acl_addr; 131 int acl_ifindex; 132 struct ipv6_ac_socklist *acl_next; 133}; 134 135struct 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#define IFA_GLOBAL 0x0000U 152 153struct ipv6_devstat { 154 struct proc_dir_entry *proc_dir_entry; 155 DEFINE_SNMP_STAT(struct ipstats_mib, ipv6); 156 DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6); 157}; 158 159struct 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 long mc_v1_seen; 169 unsigned long mc_maxdelay; 170 unsigned char mc_qrv; 171 unsigned char mc_gq_running; 172 unsigned char mc_ifc_count; 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 196extern struct ipv6_devconf ipv6_devconf; 197 198static 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 212static inline void ipv6_tr_mc_map(struct in6_addr *addr, char *buf) 213{ 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 265static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf) 266{ 267 buf[0] = 0x00; 268} 269 270static 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