Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | #ifndef _ADDRCONF_H |
| 3 | #define _ADDRCONF_H |
| 4 | |
Maciej Żenczykowski | bd11f07 | 2016-09-27 23:57:58 -0700 | [diff] [blame] | 5 | #define MAX_RTR_SOLICITATIONS -1 /* unlimited */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | #define RTR_SOLICITATION_INTERVAL (4*HZ) |
Maciej Żenczykowski | bd11f07 | 2016-09-27 23:57:58 -0700 | [diff] [blame] | 7 | #define RTR_SOLICITATION_MAX_INTERVAL (3600*HZ) /* 1 hour */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | |
| 9 | #define MIN_VALID_LIFETIME (2*3600) /* 2 hours */ |
| 10 | |
| 11 | #define TEMP_VALID_LIFETIME (7*86400) |
| 12 | #define TEMP_PREFERRED_LIFETIME (86400) |
Lorenzo Colitti | 76f793e | 2011-07-26 13:50:49 +0000 | [diff] [blame] | 13 | #define REGEN_MAX_RETRY (3) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #define MAX_DESYNC_FACTOR (600) |
| 15 | |
| 16 | #define ADDR_CHECK_FREQUENCY (120*HZ) |
| 17 | |
| 18 | #define IPV6_MAX_ADDRESSES 16 |
| 19 | |
Jiri Pirko | 5c766d6 | 2013-01-24 09:41:41 +0000 | [diff] [blame] | 20 | #define ADDRCONF_TIMER_FUZZ_MINUS (HZ > 50 ? HZ / 50 : 1) |
| 21 | #define ADDRCONF_TIMER_FUZZ (HZ / 4) |
| 22 | #define ADDRCONF_TIMER_FUZZ_MAX (HZ) |
| 23 | |
WANG Cong | 242d3a4 | 2017-05-08 10:12:13 -0700 | [diff] [blame] | 24 | #define ADDRCONF_NOTIFY_PRIORITY 0 |
| 25 | |
Fred L. Templin | c7dc89c | 2007-11-29 22:11:40 +1100 | [diff] [blame] | 26 | #include <linux/in.h> |
Patrick McHardy | 6a800d4 | 2005-05-03 22:17:18 -0700 | [diff] [blame] | 27 | #include <linux/in6.h> |
| 28 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | struct prefix_info { |
| 30 | __u8 type; |
| 31 | __u8 length; |
| 32 | __u8 prefix_len; |
| 33 | |
| 34 | #if defined(__BIG_ENDIAN_BITFIELD) |
| 35 | __u8 onlink : 1, |
| 36 | autoconf : 1, |
| 37 | reserved : 6; |
| 38 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
| 39 | __u8 reserved : 6, |
| 40 | autoconf : 1, |
| 41 | onlink : 1; |
| 42 | #else |
| 43 | #error "Please fix <asm/byteorder.h>" |
| 44 | #endif |
Al Viro | e69a4ad | 2006-11-14 20:56:00 -0800 | [diff] [blame] | 45 | __be32 valid; |
| 46 | __be32 prefered; |
| 47 | __be32 reserved2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
| 49 | struct in6_addr prefix; |
| 50 | }; |
| 51 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #include <linux/netdevice.h> |
| 53 | #include <net/if_inet6.h> |
Herbert Xu | e4553ed | 2005-05-03 14:25:13 -0700 | [diff] [blame] | 54 | #include <net/ipv6.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
Krister Johansen | 3ad7d24 | 2017-06-08 13:12:14 -0700 | [diff] [blame] | 56 | struct in6_validator_info { |
| 57 | struct in6_addr i6vi_addr; |
| 58 | struct inet6_dev *i6vi_dev; |
David Ahern | de95e04 | 2017-10-18 09:56:54 -0700 | [diff] [blame] | 59 | struct netlink_ext_ack *extack; |
Krister Johansen | 3ad7d24 | 2017-06-08 13:12:14 -0700 | [diff] [blame] | 60 | }; |
| 61 | |
David Ahern | e6464b8 | 2018-05-27 08:09:53 -0700 | [diff] [blame] | 62 | struct ifa6_config { |
| 63 | const struct in6_addr *pfx; |
| 64 | unsigned int plen; |
| 65 | |
| 66 | const struct in6_addr *peer_pfx; |
| 67 | |
David Ahern | 8308f3f | 2018-05-27 08:09:58 -0700 | [diff] [blame] | 68 | u32 rt_priority; |
David Ahern | e6464b8 | 2018-05-27 08:09:53 -0700 | [diff] [blame] | 69 | u32 ifa_flags; |
| 70 | u32 preferred_lft; |
| 71 | u32 valid_lft; |
| 72 | u16 scope; |
| 73 | }; |
| 74 | |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 75 | int addrconf_init(void); |
| 76 | void addrconf_cleanup(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 78 | int addrconf_add_ifaddr(struct net *net, void __user *arg); |
| 79 | int addrconf_del_ifaddr(struct net *net, void __user *arg); |
| 80 | int addrconf_set_dstaddr(struct net *net, void __user *arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 82 | int ipv6_chk_addr(struct net *net, const struct in6_addr *addr, |
| 83 | const struct net_device *dev, int strict); |
Erik Kline | c58da4c | 2015-02-04 20:01:23 +0900 | [diff] [blame] | 84 | int ipv6_chk_addr_and_flags(struct net *net, const struct in6_addr *addr, |
David Ahern | 232378e | 2018-03-13 08:29:37 -0700 | [diff] [blame] | 85 | const struct net_device *dev, bool skip_dev_check, |
| 86 | int strict, u32 banned_flags); |
Daniel Lezcano | bfeade0 | 2008-01-10 22:43:18 -0800 | [diff] [blame] | 87 | |
Masahide NAKAMURA | 59fbb3a6 | 2007-06-26 23:56:32 -0700 | [diff] [blame] | 88 | #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 89 | int ipv6_chk_home_addr(struct net *net, const struct in6_addr *addr); |
Masahide NAKAMURA | 65d4ed9 | 2006-08-23 19:16:22 -0700 | [diff] [blame] | 90 | #endif |
YOSHIFUJI Hideaki | 52eeeb8 | 2008-03-15 22:54:23 -0400 | [diff] [blame] | 91 | |
Catalin\(ux\) M. BOIE | 7df37ff | 2013-09-23 23:04:19 +0300 | [diff] [blame] | 92 | bool ipv6_chk_custom_prefix(const struct in6_addr *addr, |
| 93 | const unsigned int prefix_len, |
| 94 | struct net_device *dev); |
| 95 | |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 96 | int ipv6_chk_prefix(const struct in6_addr *addr, struct net_device *dev); |
YOSHIFUJI Hideaki | 52eeeb8 | 2008-03-15 22:54:23 -0400 | [diff] [blame] | 97 | |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 98 | struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, |
| 99 | const struct in6_addr *addr, |
| 100 | struct net_device *dev, int strict); |
Daniel Lezcano | 1cab3da | 2008-01-10 22:44:09 -0800 | [diff] [blame] | 101 | |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 102 | int ipv6_dev_get_saddr(struct net *net, const struct net_device *dev, |
| 103 | const struct in6_addr *daddr, unsigned int srcprefs, |
| 104 | struct in6_addr *saddr); |
| 105 | int __ipv6_get_lladdr(struct inet6_dev *idev, struct in6_addr *addr, |
Jiri Pirko | 479840f | 2013-12-06 09:45:21 +0100 | [diff] [blame] | 106 | u32 banned_flags); |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 107 | int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr, |
Jiri Pirko | 479840f | 2013-12-06 09:45:21 +0100 | [diff] [blame] | 108 | u32 banned_flags); |
Joe Perches | 7016e06 | 2017-09-13 13:58:15 -0700 | [diff] [blame] | 109 | bool inet_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2, |
| 110 | bool match_wildcard); |
Martin KaFai Lau | 2dbb9b9 | 2018-08-08 01:01:25 -0700 | [diff] [blame] | 111 | bool inet_rcv_saddr_any(const struct sock *sk); |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 112 | void addrconf_join_solict(struct net_device *dev, const struct in6_addr *addr); |
| 113 | void addrconf_leave_solict(struct inet6_dev *idev, const struct in6_addr *addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | |
Alexander Aring | 2ad3ed5 | 2016-06-15 21:20:17 +0200 | [diff] [blame] | 115 | void addrconf_add_linklocal(struct inet6_dev *idev, |
| 116 | const struct in6_addr *addr, u32 flags); |
| 117 | |
Alexander Aring | cc84b3c | 2016-06-15 21:20:24 +0200 | [diff] [blame] | 118 | int addrconf_prefix_rcv_add_addr(struct net *net, struct net_device *dev, |
| 119 | const struct prefix_info *pinfo, |
| 120 | struct inet6_dev *in6_dev, |
| 121 | const struct in6_addr *addr, int addr_type, |
| 122 | u32 addr_flags, bool sllao, bool tokenized, |
| 123 | __u32 valid_lft, u32 prefered_lft); |
| 124 | |
Yuval Shaia | 4d6f285 | 2017-03-14 16:01:57 +0200 | [diff] [blame] | 125 | static inline void addrconf_addr_eui48_base(u8 *eui, const char *const addr) |
| 126 | { |
| 127 | memcpy(eui, addr, 3); |
| 128 | eui[3] = 0xFF; |
| 129 | eui[4] = 0xFE; |
| 130 | memcpy(eui + 5, addr + 3, 3); |
| 131 | } |
| 132 | |
| 133 | static inline void addrconf_addr_eui48(u8 *eui, const char *const addr) |
| 134 | { |
| 135 | addrconf_addr_eui48_base(eui, addr); |
| 136 | eui[0] ^= 2; |
| 137 | } |
| 138 | |
Matan Barak | 399e6f9 | 2015-07-30 18:33:22 +0300 | [diff] [blame] | 139 | static inline int addrconf_ifid_eui48(u8 *eui, struct net_device *dev) |
| 140 | { |
| 141 | if (dev->addr_len != ETH_ALEN) |
| 142 | return -1; |
Matan Barak | 399e6f9 | 2015-07-30 18:33:22 +0300 | [diff] [blame] | 143 | |
| 144 | /* |
| 145 | * The zSeries OSA network cards can be shared among various |
| 146 | * OS instances, but the OSA cards have only one MAC address. |
| 147 | * This leads to duplicate address conflicts in conjunction |
| 148 | * with IPv6 if more than one instance uses the same card. |
| 149 | * |
| 150 | * The driver for these cards can deliver a unique 16-bit |
| 151 | * identifier for each instance sharing the same card. It is |
| 152 | * placed instead of 0xFFFE in the interface identifier. The |
| 153 | * "u" bit of the interface identifier is not inverted in this |
| 154 | * case. Hence the resulting interface identifier has local |
| 155 | * scope according to RFC2373. |
| 156 | */ |
Yuval Shaia | 4d6f285 | 2017-03-14 16:01:57 +0200 | [diff] [blame] | 157 | |
| 158 | addrconf_addr_eui48_base(eui, dev->dev_addr); |
| 159 | |
Matan Barak | 399e6f9 | 2015-07-30 18:33:22 +0300 | [diff] [blame] | 160 | if (dev->dev_id) { |
| 161 | eui[3] = (dev->dev_id >> 8) & 0xFF; |
| 162 | eui[4] = dev->dev_id & 0xFF; |
| 163 | } else { |
Matan Barak | 399e6f9 | 2015-07-30 18:33:22 +0300 | [diff] [blame] | 164 | eui[0] ^= 2; |
| 165 | } |
Yuval Shaia | 4d6f285 | 2017-03-14 16:01:57 +0200 | [diff] [blame] | 166 | |
Matan Barak | 399e6f9 | 2015-07-30 18:33:22 +0300 | [diff] [blame] | 167 | return 0; |
| 168 | } |
| 169 | |
YOSHIFUJI Hideaki | 4bed72e | 2008-05-27 17:37:49 +0900 | [diff] [blame] | 170 | static inline unsigned long addrconf_timeout_fixup(u32 timeout, |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 171 | unsigned int unit) |
YOSHIFUJI Hideaki | 4bed72e | 2008-05-27 17:37:49 +0900 | [diff] [blame] | 172 | { |
| 173 | if (timeout == 0xffffffff) |
| 174 | return ~0UL; |
| 175 | |
| 176 | /* |
| 177 | * Avoid arithmetic overflow. |
| 178 | * Assuming unit is constant and non-zero, this "if" statement |
| 179 | * will go away on 64bit archs. |
| 180 | */ |
| 181 | if (0xfffffffe > LONG_MAX / unit && timeout > LONG_MAX / unit) |
| 182 | return LONG_MAX / unit; |
| 183 | |
| 184 | return timeout; |
| 185 | } |
| 186 | |
| 187 | static inline int addrconf_finite_timeout(unsigned long timeout) |
| 188 | { |
| 189 | return ~timeout; |
| 190 | } |
| 191 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | /* |
YOSHIFUJI Hideaki | 2a8cc6c | 2007-11-14 15:56:23 +0900 | [diff] [blame] | 193 | * IPv6 Address Label subsystem (addrlabel.c) |
| 194 | */ |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 195 | int ipv6_addr_label_init(void); |
| 196 | void ipv6_addr_label_cleanup(void); |
Florian Westphal | a3fde2a | 2017-12-04 19:19:18 +0100 | [diff] [blame] | 197 | int ipv6_addr_label_rtnl_register(void); |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 198 | u32 ipv6_addr_label(struct net *net, const struct in6_addr *addr, |
| 199 | int type, int ifindex); |
YOSHIFUJI Hideaki | 2a8cc6c | 2007-11-14 15:56:23 +0900 | [diff] [blame] | 200 | |
| 201 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | * multicast prototypes (mcast.c) |
| 203 | */ |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 204 | int ipv6_sock_mc_join(struct sock *sk, int ifindex, |
| 205 | const struct in6_addr *addr); |
| 206 | int ipv6_sock_mc_drop(struct sock *sk, int ifindex, |
| 207 | const struct in6_addr *addr); |
WANG Cong | 8651be8 | 2016-10-19 23:35:12 -0700 | [diff] [blame] | 208 | void __ipv6_sock_mc_close(struct sock *sk); |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 209 | void ipv6_sock_mc_close(struct sock *sk); |
| 210 | bool inet6_mc_check(struct sock *sk, const struct in6_addr *mc_addr, |
| 211 | const struct in6_addr *src_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 213 | int ipv6_dev_mc_inc(struct net_device *dev, const struct in6_addr *addr); |
| 214 | int __ipv6_dev_mc_dec(struct inet6_dev *idev, const struct in6_addr *addr); |
| 215 | int ipv6_dev_mc_dec(struct net_device *dev, const struct in6_addr *addr); |
| 216 | void ipv6_mc_up(struct inet6_dev *idev); |
| 217 | void ipv6_mc_down(struct inet6_dev *idev); |
| 218 | void ipv6_mc_unmap(struct inet6_dev *idev); |
| 219 | void ipv6_mc_remap(struct inet6_dev *idev); |
| 220 | void ipv6_mc_init_dev(struct inet6_dev *idev); |
| 221 | void ipv6_mc_destroy_dev(struct inet6_dev *idev); |
Linus Lüssing | 9afd85c | 2015-05-02 14:01:07 +0200 | [diff] [blame] | 222 | int ipv6_mc_check_mld(struct sk_buff *skb, struct sk_buff **skb_trimmed); |
Vishwanath Pai | da13c59 | 2017-10-30 19:38:52 -0400 | [diff] [blame] | 223 | void addrconf_dad_failure(struct sk_buff *skb, struct inet6_ifaddr *ifp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 225 | bool ipv6_chk_mcast_addr(struct net_device *dev, const struct in6_addr *group, |
| 226 | const struct in6_addr *src_addr); |
YOSHIFUJI Hideaki / 吉藤英明 | daad151 | 2013-01-13 05:02:18 +0000 | [diff] [blame] | 227 | |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 228 | void ipv6_mc_dad_complete(struct inet6_dev *idev); |
Cong Wang | 5f81bd2 | 2013-08-31 13:44:30 +0800 | [diff] [blame] | 229 | |
| 230 | /* A stub used by vxlan module. This is ugly, ideally these |
| 231 | * symbols should be built into the core kernel. |
| 232 | */ |
| 233 | struct ipv6_stub { |
| 234 | int (*ipv6_sock_mc_join)(struct sock *sk, int ifindex, |
| 235 | const struct in6_addr *addr); |
| 236 | int (*ipv6_sock_mc_drop)(struct sock *sk, int ifindex, |
| 237 | const struct in6_addr *addr); |
Sabrina Dubroca | 5dd6835 | 2019-12-04 15:35:53 +0100 | [diff] [blame] | 238 | struct dst_entry *(*ipv6_dst_lookup_flow)(struct net *net, |
| 239 | const struct sock *sk, |
| 240 | struct flowi6 *fl6, |
| 241 | const struct in6_addr *final_dst); |
David Ahern | 65a2022 | 2018-05-09 20:34:25 -0700 | [diff] [blame] | 242 | |
| 243 | struct fib6_table *(*fib6_get_table)(struct net *net, u32 id); |
| 244 | struct fib6_info *(*fib6_lookup)(struct net *net, int oif, |
| 245 | struct flowi6 *fl6, int flags); |
| 246 | struct fib6_info *(*fib6_table_lookup)(struct net *net, |
| 247 | struct fib6_table *table, |
| 248 | int oif, struct flowi6 *fl6, |
| 249 | int flags); |
| 250 | struct fib6_info *(*fib6_multipath_select)(const struct net *net, |
| 251 | struct fib6_info *f6i, |
| 252 | struct flowi6 *fl6, int oif, |
| 253 | const struct sk_buff *skb, |
| 254 | int strict); |
David Ahern | 901731b | 2018-05-21 09:08:14 -0700 | [diff] [blame] | 255 | u32 (*ip6_mtu_from_fib6)(struct fib6_info *f6i, struct in6_addr *daddr, |
| 256 | struct in6_addr *saddr); |
David Ahern | 65a2022 | 2018-05-09 20:34:25 -0700 | [diff] [blame] | 257 | |
Cong Wang | 5f81bd2 | 2013-08-31 13:44:30 +0800 | [diff] [blame] | 258 | void (*udpv6_encap_enable)(void); |
Jiri Benc | 38cf595 | 2015-09-22 18:57:13 +0200 | [diff] [blame] | 259 | void (*ndisc_send_na)(struct net_device *dev, const struct in6_addr *daddr, |
Cong Wang | f564f45 | 2013-08-31 13:44:36 +0800 | [diff] [blame] | 260 | const struct in6_addr *solicited_addr, |
| 261 | bool router, bool solicited, bool override, bool inc_opt); |
Cong Wang | e15a00a | 2013-08-31 13:44:34 +0800 | [diff] [blame] | 262 | struct neigh_table *nd_tbl; |
Cong Wang | 5f81bd2 | 2013-08-31 13:44:30 +0800 | [diff] [blame] | 263 | }; |
| 264 | extern const struct ipv6_stub *ipv6_stub __read_mostly; |
| 265 | |
Andrey Ignatov | d74bad4 | 2018-03-30 15:08:05 -0700 | [diff] [blame] | 266 | /* A stub used by bpf helpers. Similarly ugly as ipv6_stub */ |
| 267 | struct ipv6_bpf_stub { |
| 268 | int (*inet6_bind)(struct sock *sk, struct sockaddr *uaddr, int addr_len, |
| 269 | bool force_bind_address_no_port, bool with_lock); |
| 270 | }; |
| 271 | extern const struct ipv6_bpf_stub *ipv6_bpf_stub __read_mostly; |
| 272 | |
YOSHIFUJI Hideaki / 吉藤英明 | daad151 | 2013-01-13 05:02:18 +0000 | [diff] [blame] | 273 | /* |
| 274 | * identify MLD packets for MLD filter exceptions |
| 275 | */ |
| 276 | static inline bool ipv6_is_mld(struct sk_buff *skb, int nexthdr, int offset) |
| 277 | { |
| 278 | struct icmp6hdr *hdr; |
| 279 | |
| 280 | if (nexthdr != IPPROTO_ICMPV6 || |
| 281 | !pskb_network_may_pull(skb, offset + sizeof(struct icmp6hdr))) |
| 282 | return false; |
| 283 | |
| 284 | hdr = (struct icmp6hdr *)(skb_network_header(skb) + offset); |
| 285 | |
| 286 | switch (hdr->icmp6_type) { |
| 287 | case ICMPV6_MGM_QUERY: |
| 288 | case ICMPV6_MGM_REPORT: |
| 289 | case ICMPV6_MGM_REDUCTION: |
| 290 | case ICMPV6_MLD2_REPORT: |
| 291 | return true; |
| 292 | default: |
| 293 | break; |
| 294 | } |
| 295 | return false; |
| 296 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 298 | void addrconf_prefix_rcv(struct net_device *dev, |
| 299 | u8 *opt, int len, bool sllao); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | /* |
| 302 | * anycast prototypes (anycast.c) |
| 303 | */ |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 304 | int ipv6_sock_ac_join(struct sock *sk, int ifindex, |
| 305 | const struct in6_addr *addr); |
| 306 | int ipv6_sock_ac_drop(struct sock *sk, int ifindex, |
| 307 | const struct in6_addr *addr); |
| 308 | void ipv6_sock_ac_close(struct sock *sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | |
WANG Cong | 013b4d9 | 2014-09-11 15:35:11 -0700 | [diff] [blame] | 310 | int __ipv6_dev_ac_inc(struct inet6_dev *idev, const struct in6_addr *addr); |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 311 | int __ipv6_dev_ac_dec(struct inet6_dev *idev, const struct in6_addr *addr); |
Sabrina Dubroca | 381f4dc | 2014-09-10 23:23:02 +0200 | [diff] [blame] | 312 | void ipv6_ac_destroy_dev(struct inet6_dev *idev); |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 313 | bool ipv6_chk_acast_addr(struct net *net, struct net_device *dev, |
FX Le Bail | 7c90cc2 | 2014-01-22 07:42:37 +0100 | [diff] [blame] | 314 | const struct in6_addr *addr); |
| 315 | bool ipv6_chk_acast_addr_src(struct net *net, struct net_device *dev, |
| 316 | const struct in6_addr *addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | |
| 318 | /* Device notifier */ |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 319 | int register_inet6addr_notifier(struct notifier_block *nb); |
| 320 | int unregister_inet6addr_notifier(struct notifier_block *nb); |
| 321 | int inet6addr_notifier_call_chain(unsigned long val, void *v); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | |
Krister Johansen | 3ad7d24 | 2017-06-08 13:12:14 -0700 | [diff] [blame] | 323 | int register_inet6addr_validator_notifier(struct notifier_block *nb); |
| 324 | int unregister_inet6addr_validator_notifier(struct notifier_block *nb); |
| 325 | int inet6addr_validator_notifier_call_chain(unsigned long val, void *v); |
| 326 | |
David Ahern | 85b3daa | 2017-03-28 14:28:04 -0700 | [diff] [blame] | 327 | void inet6_netconf_notify_devconf(struct net *net, int event, int type, |
| 328 | int ifindex, struct ipv6_devconf *devconf); |
Nicolas Dichtel | d67b8c6 | 2012-12-04 01:13:35 +0000 | [diff] [blame] | 329 | |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 330 | /** |
| 331 | * __in6_dev_get - get inet6_dev pointer from netdevice |
| 332 | * @dev: network device |
| 333 | * |
| 334 | * Caller must hold rcu_read_lock or RTNL, because this function |
| 335 | * does not take a reference on the inet6_dev. |
| 336 | */ |
| 337 | static inline struct inet6_dev *__in6_dev_get(const struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | { |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 339 | return rcu_dereference_rtnl(dev->ip6_ptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | } |
| 341 | |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 342 | /** |
Stephen Suryaputra | bdb7cc6 | 2018-04-16 13:42:16 -0400 | [diff] [blame] | 343 | * __in6_dev_get_safely - get inet6_dev pointer from netdevice |
| 344 | * @dev: network device |
| 345 | * |
| 346 | * This is a safer version of __in6_dev_get |
| 347 | */ |
| 348 | static inline struct inet6_dev *__in6_dev_get_safely(const struct net_device *dev) |
| 349 | { |
| 350 | if (likely(dev)) |
| 351 | return rcu_dereference_rtnl(dev->ip6_ptr); |
| 352 | else |
| 353 | return NULL; |
| 354 | } |
| 355 | |
| 356 | /** |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 357 | * in6_dev_get - get inet6_dev pointer from netdevice |
| 358 | * @dev: network device |
| 359 | * |
| 360 | * This version can be used in any context, and takes a reference |
| 361 | * on the inet6_dev. Callers must use in6_dev_put() later to |
| 362 | * release this reference. |
| 363 | */ |
| 364 | static inline struct inet6_dev *in6_dev_get(const struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | { |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 366 | struct inet6_dev *idev; |
| 367 | |
YOSHIFUJI Hideaki | 8814c4b | 2006-09-22 14:44:24 -0700 | [diff] [blame] | 368 | rcu_read_lock(); |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 369 | idev = rcu_dereference(dev->ip6_ptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | if (idev) |
Reshetova, Elena | 1be9246 | 2017-07-04 09:34:55 +0300 | [diff] [blame] | 371 | refcount_inc(&idev->refcnt); |
YOSHIFUJI Hideaki | 8814c4b | 2006-09-22 14:44:24 -0700 | [diff] [blame] | 372 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | return idev; |
| 374 | } |
| 375 | |
Jiri Pirko | bba2489 | 2013-12-07 19:26:57 +0100 | [diff] [blame] | 376 | static inline struct neigh_parms *__in6_dev_nd_parms_get_rcu(const struct net_device *dev) |
| 377 | { |
| 378 | struct inet6_dev *idev = __in6_dev_get(dev); |
| 379 | |
| 380 | return idev ? idev->nd_parms : NULL; |
| 381 | } |
| 382 | |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 383 | void in6_dev_finish_destroy(struct inet6_dev *idev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 385 | static inline void in6_dev_put(struct inet6_dev *idev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | { |
Reshetova, Elena | 1be9246 | 2017-07-04 09:34:55 +0300 | [diff] [blame] | 387 | if (refcount_dec_and_test(&idev->refcnt)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | in6_dev_finish_destroy(idev); |
| 389 | } |
| 390 | |
Eric Dumazet | 12d94a8 | 2017-08-15 04:09:51 -0700 | [diff] [blame] | 391 | static inline void in6_dev_put_clear(struct inet6_dev **pidev) |
| 392 | { |
| 393 | struct inet6_dev *idev = *pidev; |
| 394 | |
| 395 | if (idev) { |
| 396 | in6_dev_put(idev); |
| 397 | *pidev = NULL; |
| 398 | } |
| 399 | } |
| 400 | |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 401 | static inline void __in6_dev_put(struct inet6_dev *idev) |
| 402 | { |
Reshetova, Elena | 1be9246 | 2017-07-04 09:34:55 +0300 | [diff] [blame] | 403 | refcount_dec(&idev->refcnt); |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 404 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 406 | static inline void in6_dev_hold(struct inet6_dev *idev) |
| 407 | { |
Reshetova, Elena | 1be9246 | 2017-07-04 09:34:55 +0300 | [diff] [blame] | 408 | refcount_inc(&idev->refcnt); |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 409 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 411 | void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | |
| 413 | static inline void in6_ifa_put(struct inet6_ifaddr *ifp) |
| 414 | { |
Reshetova, Elena | 271201c | 2017-07-04 09:34:56 +0300 | [diff] [blame] | 415 | if (refcount_dec_and_test(&ifp->refcnt)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | inet6_ifa_finish_destroy(ifp); |
| 417 | } |
| 418 | |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 419 | static inline void __in6_ifa_put(struct inet6_ifaddr *ifp) |
| 420 | { |
Reshetova, Elena | 271201c | 2017-07-04 09:34:56 +0300 | [diff] [blame] | 421 | refcount_dec(&ifp->refcnt); |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 422 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 424 | static inline void in6_ifa_hold(struct inet6_ifaddr *ifp) |
| 425 | { |
Reshetova, Elena | 271201c | 2017-07-04 09:34:56 +0300 | [diff] [blame] | 426 | refcount_inc(&ifp->refcnt); |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 427 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | |
| 430 | /* |
| 431 | * compute link-local solicited-node multicast address |
| 432 | */ |
| 433 | |
| 434 | static inline void addrconf_addr_solict_mult(const struct in6_addr *addr, |
| 435 | struct in6_addr *solicited) |
| 436 | { |
| 437 | ipv6_addr_set(solicited, |
YOSHIFUJI Hideaki | 0e7b8dc | 2008-02-28 17:03:12 +0900 | [diff] [blame] | 438 | htonl(0xFF020000), 0, |
| 439 | htonl(0x1), |
| 440 | htonl(0xFF000000) | addr->s6_addr32[3]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | } |
| 442 | |
YOSHIFUJI Hideaki | b27b28c | 2013-01-21 02:38:38 +0900 | [diff] [blame] | 443 | static inline bool ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | { |
YOSHIFUJI Hideaki / 吉藤英明 | d164156 | 2013-01-20 07:38:52 +0000 | [diff] [blame] | 445 | #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 |
Bjørn Mork | bc86195 | 2014-02-27 14:20:29 +0100 | [diff] [blame] | 446 | __be64 *p = (__be64 *)addr; |
YOSHIFUJI Hideaki / 吉藤英明 | d164156 | 2013-01-20 07:38:52 +0000 | [diff] [blame] | 447 | return ((p[0] ^ cpu_to_be64(0xff02000000000000UL)) | (p[1] ^ cpu_to_be64(1))) == 0UL; |
| 448 | #else |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 449 | return ((addr->s6_addr32[0] ^ htonl(0xff020000)) | |
YOSHIFUJI Hideaki | fed85383 | 2008-04-11 20:17:55 +0900 | [diff] [blame] | 450 | addr->s6_addr32[1] | addr->s6_addr32[2] | |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 451 | (addr->s6_addr32[3] ^ htonl(0x00000001))) == 0; |
YOSHIFUJI Hideaki / 吉藤英明 | d164156 | 2013-01-20 07:38:52 +0000 | [diff] [blame] | 452 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | } |
| 454 | |
YOSHIFUJI Hideaki | b27b28c | 2013-01-21 02:38:38 +0900 | [diff] [blame] | 455 | static inline bool ipv6_addr_is_ll_all_routers(const struct in6_addr *addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | { |
YOSHIFUJI Hideaki / 吉藤英明 | d164156 | 2013-01-20 07:38:52 +0000 | [diff] [blame] | 457 | #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 |
Bjørn Mork | bc86195 | 2014-02-27 14:20:29 +0100 | [diff] [blame] | 458 | __be64 *p = (__be64 *)addr; |
YOSHIFUJI Hideaki / 吉藤英明 | d164156 | 2013-01-20 07:38:52 +0000 | [diff] [blame] | 459 | return ((p[0] ^ cpu_to_be64(0xff02000000000000UL)) | (p[1] ^ cpu_to_be64(2))) == 0UL; |
| 460 | #else |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 461 | return ((addr->s6_addr32[0] ^ htonl(0xff020000)) | |
YOSHIFUJI Hideaki | fed85383 | 2008-04-11 20:17:55 +0900 | [diff] [blame] | 462 | addr->s6_addr32[1] | addr->s6_addr32[2] | |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 463 | (addr->s6_addr32[3] ^ htonl(0x00000002))) == 0; |
YOSHIFUJI Hideaki / 吉藤英明 | d164156 | 2013-01-20 07:38:52 +0000 | [diff] [blame] | 464 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | } |
| 466 | |
YOSHIFUJI Hideaki | b27b28c | 2013-01-21 02:38:38 +0900 | [diff] [blame] | 467 | static inline bool ipv6_addr_is_isatap(const struct in6_addr *addr) |
Fred L. Templin | c7dc89c | 2007-11-29 22:11:40 +1100 | [diff] [blame] | 468 | { |
Eric Dumazet | 48daa3b | 2010-09-21 06:57:39 +0000 | [diff] [blame] | 469 | return (addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE); |
Fred L. Templin | c7dc89c | 2007-11-29 22:11:40 +1100 | [diff] [blame] | 470 | } |
| 471 | |
YOSHIFUJI Hideaki / 吉藤英明 | ca97a64 | 2013-01-20 07:39:00 +0000 | [diff] [blame] | 472 | static inline bool ipv6_addr_is_solict_mult(const struct in6_addr *addr) |
| 473 | { |
YOSHIFUJI Hideaki / 吉藤英明 | 9d10077 | 2013-01-20 07:39:07 +0000 | [diff] [blame] | 474 | #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 |
Bjørn Mork | bc86195 | 2014-02-27 14:20:29 +0100 | [diff] [blame] | 475 | __be64 *p = (__be64 *)addr; |
YOSHIFUJI Hideaki / 吉藤英明 | 9d10077 | 2013-01-20 07:39:07 +0000 | [diff] [blame] | 476 | return ((p[0] ^ cpu_to_be64(0xff02000000000000UL)) | |
| 477 | ((p[1] ^ cpu_to_be64(0x00000001ff000000UL)) & |
| 478 | cpu_to_be64(0xffffffffff000000UL))) == 0UL; |
| 479 | #else |
| 480 | return ((addr->s6_addr32[0] ^ htonl(0xff020000)) | |
| 481 | addr->s6_addr32[1] | |
| 482 | (addr->s6_addr32[2] ^ htonl(0x00000001)) | |
| 483 | (addr->s6_addr[12] ^ 0xff)) == 0; |
| 484 | #endif |
YOSHIFUJI Hideaki / 吉藤英明 | ca97a64 | 2013-01-20 07:39:00 +0000 | [diff] [blame] | 485 | } |
| 486 | |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 487 | #ifdef CONFIG_PROC_FS |
Joe Perches | e8e54d3 | 2013-07-31 17:31:32 -0700 | [diff] [blame] | 488 | int if6_proc_init(void); |
| 489 | void if6_proc_exit(void); |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 490 | #endif |
| 491 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | #endif |