1/* 2 * inet6 interface/address list definitions 3 * Linux INET6 implementation 4 * 5 * Authors: 6 * Pedro Roque <pedro_m@yahoo.com> 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 <linux/ipv6.h> 19 20#define IF_RA_OTHERCONF 0x80 21#define IF_RA_MANAGED 0x40 22#define IF_RA_RCVD 0x20 23#define IF_RS_SENT 0x10 24 25#ifdef __KERNEL__ 26 27struct inet6_ifaddr 28{ 29 struct in6_addr addr; 30 __u32 prefix_len; 31 32 __u32 valid_lft; 33 __u32 prefered_lft; 34 unsigned long tstamp; 35 atomic_t refcnt; 36 spinlock_t lock; 37 38 __u8 probes; 39 __u8 flags; 40 41 __u16 scope; 42 43 struct timer_list timer; 44 45 struct inet6_dev *idev; 46 47 struct inet6_ifaddr *lst_next; /* next addr in addr_lst */ 48 struct inet6_ifaddr *if_next; /* next addr in inet6_dev */ 49 50 int dead; 51}; 52 53struct ip6_sf_socklist 54{ 55 unsigned int sl_max; 56 unsigned int sl_count; 57 struct in6_addr sl_addr[0]; 58}; 59 60#define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \ 61 (count) * sizeof(struct in6_addr)) 62 63#define IP6_SFBLOCK 10 /* allocate this many at once */ 64 65struct ipv6_mc_socklist 66{ 67 struct in6_addr addr; 68 int ifindex; 69 struct ipv6_mc_socklist *next; 70 unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */ 71 struct ip6_sf_socklist *sflist; 72}; 73 74struct ip6_sf_list 75{ 76 struct ip6_sf_list *sf_next; 77 struct in6_addr sf_addr; 78 unsigned long sf_count[2]; /* include/exclude counts */ 79 unsigned char sf_gsresp; /* include in g & s response? */ 80 unsigned char sf_oldin; /* change state */ 81 unsigned char sf_crcount; /* retrans. left to send */ 82}; 83 84#define MAF_TIMER_RUNNING 0x01 85#define MAF_LAST_REPORTER 0x02 86#define MAF_LOADED 0x04 87#define MAF_NOREPORT 0x08 88#define MAF_GSQUERY 0x10 89 90struct ifmcaddr6 91{ 92 struct in6_addr mca_addr; 93 struct inet6_dev *idev; 94 struct ifmcaddr6 *next; 95 struct ip6_sf_list *mca_sources; 96 struct ip6_sf_list *mca_tomb; 97 unsigned int mca_sfmode; 98 unsigned long mca_sfcount[2]; 99 struct timer_list mca_timer; 100 unsigned mca_flags; 101 int mca_users; 102 atomic_t mca_refcnt; 103 spinlock_t mca_lock; 104 unsigned char mca_crcount; 105}; 106 107/* Anycast stuff */ 108 109struct ipv6_ac_socklist 110{ 111 struct in6_addr acl_addr; 112 int acl_ifindex; 113 struct ipv6_ac_socklist *acl_next; 114}; 115 116struct ifacaddr6 117{ 118 struct in6_addr aca_addr; 119 struct inet6_dev *aca_idev; 120 struct ifacaddr6 *aca_next; 121 int aca_users; 122 atomic_t aca_refcnt; 123 spinlock_t aca_lock; 124}; 125 126#define IFA_HOST IPV6_ADDR_LOOPBACK 127#define IFA_LINK IPV6_ADDR_LINKLOCAL 128#define IFA_SITE IPV6_ADDR_SITELOCAL 129#define IFA_GLOBAL 0x0000U 130 131struct inet6_dev 132{ 133 struct net_device *dev; 134 135 struct inet6_ifaddr *addr_list; 136 137 struct ifmcaddr6 *mc_list; 138 struct ifmcaddr6 *mc_tomb; 139 rwlock_t mc_lock; 140 unsigned long mc_v1_seen; 141 unsigned long mc_maxdelay; 142 unsigned char mc_qrv; 143 unsigned char mc_gq_running; 144 unsigned char mc_ifc_count; 145 struct timer_list mc_gq_timer; /* general query timer */ 146 struct timer_list mc_ifc_timer; /* interface change timer */ 147 148 struct ifacaddr6 *ac_list; 149 rwlock_t lock; 150 atomic_t refcnt; 151 __u32 if_flags; 152 int dead; 153 154 struct neigh_parms *nd_parms; 155 struct inet6_dev *next; 156 struct ipv6_devconf cnf; 157}; 158 159extern struct ipv6_devconf ipv6_devconf; 160 161static inline void ipv6_eth_mc_map(struct in6_addr *addr, char *buf) 162{ 163 /* 164 * +-------+-------+-------+-------+-------+-------+ 165 * | 33 | 33 | DST13 | DST14 | DST15 | DST16 | 166 * +-------+-------+-------+-------+-------+-------+ 167 */ 168 169 buf[0]= 0x33; 170 buf[1]= 0x33; 171 172 memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32)); 173} 174 175static inline void ipv6_tr_mc_map(struct in6_addr *addr, char *buf) 176{ 177 /* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */ 178 179 if (((addr->s6_addr[0] == 0xFF) && 180 ((addr->s6_addr[1] == 0x01) || (addr->s6_addr[1] == 0x02)) && 181 (addr->s6_addr16[1] == 0) && 182 (addr->s6_addr32[1] == 0) && 183 (addr->s6_addr32[2] == 0) && 184 (addr->s6_addr16[6] == 0) && 185 (addr->s6_addr[15] == 1)) || 186 ((addr->s6_addr[0] == 0xFF) && 187 (addr->s6_addr[1] == 0x02) && 188 (addr->s6_addr16[1] == 0) && 189 (addr->s6_addr32[1] == 0) && 190 (addr->s6_addr16[4] == 0) && 191 (addr->s6_addr[10] == 0) && 192 (addr->s6_addr[11] == 1) && 193 (addr->s6_addr[12] == 0xff))) 194 { 195 buf[0]=0xC0; 196 buf[1]=0x00; 197 buf[2]=0x01; 198 buf[3]=0x00; 199 buf[4]=0x00; 200 buf[5]=0x00; 201 /* All routers FF0x::2 */ 202 } else if ((addr->s6_addr[0] ==0xff) && 203 ((addr->s6_addr[1] & 0xF0) == 0) && 204 (addr->s6_addr16[1] == 0) && 205 (addr->s6_addr32[1] == 0) && 206 (addr->s6_addr32[2] == 0) && 207 (addr->s6_addr16[6] == 0) && 208 (addr->s6_addr[15] == 2)) 209 { 210 buf[0]=0xC0; 211 buf[1]=0x00; 212 buf[2]=0x02; 213 buf[3]=0x00; 214 buf[4]=0x00; 215 buf[5]=0x00; 216 } else { 217 unsigned char i ; 218 219 i = addr->s6_addr[15] & 7 ; 220 buf[0]=0xC0; 221 buf[1]=0x00; 222 buf[2]=0x00; 223 buf[3]=0x01 << i ; 224 buf[4]=0x00; 225 buf[5]=0x00; 226 } 227} 228 229static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf) 230{ 231 buf[0] = 0x00; 232} 233#endif 234#endif 235