Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 1 | /* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu> |
| 2 | * Patrick Schaaf <bof@bof.de> |
| 3 | * Martin Josefsson <gandalf@wlug.westbo.se> |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 4 | * Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | */ |
David Howells | a820141 | 2012-10-09 09:48:55 +0100 | [diff] [blame] | 10 | #ifndef _IP_SET_H |
| 11 | #define _IP_SET_H |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 12 | |
Jan Engelhardt | ae8ded1 | 2012-01-14 16:26:20 +0100 | [diff] [blame] | 13 | #include <linux/ip.h> |
| 14 | #include <linux/ipv6.h> |
| 15 | #include <linux/netlink.h> |
| 16 | #include <linux/netfilter.h> |
| 17 | #include <linux/netfilter/x_tables.h> |
Jozsef Kadlecsik | 10111a6 | 2012-09-21 21:59:32 +0200 | [diff] [blame] | 18 | #include <linux/stringify.h> |
Jan Engelhardt | ae8ded1 | 2012-01-14 16:26:20 +0100 | [diff] [blame] | 19 | #include <linux/vmalloc.h> |
| 20 | #include <net/netlink.h> |
David Howells | a820141 | 2012-10-09 09:48:55 +0100 | [diff] [blame] | 21 | #include <uapi/linux/netfilter/ipset/ip_set.h> |
Jan Engelhardt | ae8ded1 | 2012-01-14 16:26:20 +0100 | [diff] [blame] | 22 | |
Jozsef Kadlecsik | 10111a6 | 2012-09-21 21:59:32 +0200 | [diff] [blame] | 23 | #define _IP_SET_MODULE_DESC(a, b, c) \ |
| 24 | MODULE_DESCRIPTION(a " type of IP sets, revisions " b "-" c) |
| 25 | #define IP_SET_MODULE_DESC(a, b, c) \ |
| 26 | _IP_SET_MODULE_DESC(a, __stringify(b), __stringify(c)) |
| 27 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 28 | /* Set features */ |
| 29 | enum ip_set_feature { |
| 30 | IPSET_TYPE_IP_FLAG = 0, |
| 31 | IPSET_TYPE_IP = (1 << IPSET_TYPE_IP_FLAG), |
| 32 | IPSET_TYPE_PORT_FLAG = 1, |
| 33 | IPSET_TYPE_PORT = (1 << IPSET_TYPE_PORT_FLAG), |
| 34 | IPSET_TYPE_MAC_FLAG = 2, |
| 35 | IPSET_TYPE_MAC = (1 << IPSET_TYPE_MAC_FLAG), |
| 36 | IPSET_TYPE_IP2_FLAG = 3, |
| 37 | IPSET_TYPE_IP2 = (1 << IPSET_TYPE_IP2_FLAG), |
| 38 | IPSET_TYPE_NAME_FLAG = 4, |
| 39 | IPSET_TYPE_NAME = (1 << IPSET_TYPE_NAME_FLAG), |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 40 | IPSET_TYPE_IFACE_FLAG = 5, |
| 41 | IPSET_TYPE_IFACE = (1 << IPSET_TYPE_IFACE_FLAG), |
Jozsef Kadlecsik | 3e0304a | 2012-09-21 22:02:36 +0200 | [diff] [blame] | 42 | IPSET_TYPE_NOMATCH_FLAG = 6, |
| 43 | IPSET_TYPE_NOMATCH = (1 << IPSET_TYPE_NOMATCH_FLAG), |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 44 | /* Strictly speaking not a feature, but a flag for dumping: |
| 45 | * this settype must be dumped last */ |
| 46 | IPSET_DUMP_LAST_FLAG = 7, |
| 47 | IPSET_DUMP_LAST = (1 << IPSET_DUMP_LAST_FLAG), |
| 48 | }; |
| 49 | |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 50 | /* Set extensions */ |
| 51 | enum ip_set_extension { |
Jozsef Kadlecsik | 40cd63b | 2013-09-09 14:44:29 +0200 | [diff] [blame] | 52 | IPSET_EXT_BIT_TIMEOUT = 0, |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 53 | IPSET_EXT_TIMEOUT = (1 << IPSET_EXT_BIT_TIMEOUT), |
Jozsef Kadlecsik | 40cd63b | 2013-09-09 14:44:29 +0200 | [diff] [blame] | 54 | IPSET_EXT_BIT_COUNTER = 1, |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 55 | IPSET_EXT_COUNTER = (1 << IPSET_EXT_BIT_COUNTER), |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 56 | IPSET_EXT_BIT_COMMENT = 2, |
| 57 | IPSET_EXT_COMMENT = (1 << IPSET_EXT_BIT_COMMENT), |
Jozsef Kadlecsik | 40cd63b | 2013-09-09 14:44:29 +0200 | [diff] [blame] | 58 | /* Mark set with an extension which needs to call destroy */ |
| 59 | IPSET_EXT_BIT_DESTROY = 7, |
| 60 | IPSET_EXT_DESTROY = (1 << IPSET_EXT_BIT_DESTROY), |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 61 | }; |
| 62 | |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 63 | #define SET_WITH_TIMEOUT(s) ((s)->extensions & IPSET_EXT_TIMEOUT) |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 64 | #define SET_WITH_COUNTER(s) ((s)->extensions & IPSET_EXT_COUNTER) |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 65 | #define SET_WITH_COMMENT(s) ((s)->extensions & IPSET_EXT_COMMENT) |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 66 | |
Jozsef Kadlecsik | f925f70 | 2013-09-06 22:31:40 +0200 | [diff] [blame] | 67 | /* Extension id, in size order */ |
| 68 | enum ip_set_ext_id { |
| 69 | IPSET_EXT_ID_COUNTER = 0, |
| 70 | IPSET_EXT_ID_TIMEOUT, |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 71 | IPSET_EXT_ID_COMMENT, |
Jozsef Kadlecsik | f925f70 | 2013-09-06 22:31:40 +0200 | [diff] [blame] | 72 | IPSET_EXT_ID_MAX, |
| 73 | }; |
| 74 | |
Jozsef Kadlecsik | 03c8b23 | 2013-09-07 00:43:52 +0200 | [diff] [blame] | 75 | /* Extension type */ |
| 76 | struct ip_set_ext_type { |
Jozsef Kadlecsik | 40cd63b | 2013-09-09 14:44:29 +0200 | [diff] [blame] | 77 | /* Destroy extension private data (can be NULL) */ |
| 78 | void (*destroy)(void *ext); |
Jozsef Kadlecsik | 03c8b23 | 2013-09-07 00:43:52 +0200 | [diff] [blame] | 79 | enum ip_set_extension type; |
| 80 | enum ipset_cadt_flags flag; |
| 81 | /* Size and minimal alignment */ |
| 82 | u8 len; |
| 83 | u8 align; |
| 84 | }; |
| 85 | |
| 86 | extern const struct ip_set_ext_type ip_set_extensions[]; |
| 87 | |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 88 | struct ip_set_ext { |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 89 | u64 packets; |
| 90 | u64 bytes; |
Jozsef Kadlecsik | f925f70 | 2013-09-06 22:31:40 +0200 | [diff] [blame] | 91 | u32 timeout; |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 92 | char *comment; |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 93 | }; |
| 94 | |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 95 | struct ip_set_counter { |
| 96 | atomic64_t bytes; |
| 97 | atomic64_t packets; |
| 98 | }; |
| 99 | |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 100 | struct ip_set_comment { |
| 101 | char *str; |
| 102 | }; |
Jozsef Kadlecsik | 40cd63b | 2013-09-09 14:44:29 +0200 | [diff] [blame] | 103 | |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 104 | struct ip_set; |
Jozsef Kadlecsik | 40cd63b | 2013-09-09 14:44:29 +0200 | [diff] [blame] | 105 | |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 106 | #define ext_timeout(e, s) \ |
| 107 | (unsigned long *)(((void *)(e)) + (s)->offset[IPSET_EXT_ID_TIMEOUT]) |
| 108 | #define ext_counter(e, s) \ |
| 109 | (struct ip_set_counter *)(((void *)(e)) + (s)->offset[IPSET_EXT_ID_COUNTER]) |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 110 | #define ext_comment(e, s) \ |
| 111 | (struct ip_set_comment *)(((void *)(e)) + (s)->offset[IPSET_EXT_ID_COMMENT]) |
| 112 | |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 113 | |
Jozsef Kadlecsik | 5416219 | 2011-06-16 18:40:55 +0200 | [diff] [blame] | 114 | typedef int (*ipset_adtfn)(struct ip_set *set, void *value, |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 115 | const struct ip_set_ext *ext, |
Jozsef Kadlecsik | 6e01781 | 2013-04-27 14:40:50 +0200 | [diff] [blame] | 116 | struct ip_set_ext *mext, u32 cmdflags); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 117 | |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 118 | /* Kernel API function options */ |
| 119 | struct ip_set_adt_opt { |
| 120 | u8 family; /* Actual protocol family */ |
| 121 | u8 dim; /* Dimension of match/target */ |
| 122 | u8 flags; /* Direction and negation flags */ |
| 123 | u32 cmdflags; /* Command-like flags */ |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 124 | struct ip_set_ext ext; /* Extensions */ |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 125 | }; |
| 126 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 127 | /* Set type, variant-specific part */ |
| 128 | struct ip_set_type_variant { |
| 129 | /* Kernelspace: test/add/del entries |
| 130 | * returns negative error code, |
| 131 | * zero for no match/success to add/delete |
| 132 | * positive for matching element */ |
Jozsef Kadlecsik | 3ace95c | 2012-09-21 22:01:45 +0200 | [diff] [blame] | 133 | int (*kadt)(struct ip_set *set, const struct sk_buff *skb, |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 134 | const struct xt_action_param *par, |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 135 | enum ipset_adt adt, struct ip_set_adt_opt *opt); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 136 | |
| 137 | /* Userspace: test/add/del entries |
| 138 | * returns negative error code, |
| 139 | * zero for no match/success to add/delete |
| 140 | * positive for matching element */ |
| 141 | int (*uadt)(struct ip_set *set, struct nlattr *tb[], |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame] | 142 | enum ipset_adt adt, u32 *lineno, u32 flags, bool retried); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 143 | |
| 144 | /* Low level add/del/test functions */ |
| 145 | ipset_adtfn adt[IPSET_ADT_MAX]; |
| 146 | |
| 147 | /* When adding entries and set is full, try to resize the set */ |
| 148 | int (*resize)(struct ip_set *set, bool retried); |
| 149 | /* Destroy the set */ |
| 150 | void (*destroy)(struct ip_set *set); |
| 151 | /* Flush the elements */ |
| 152 | void (*flush)(struct ip_set *set); |
| 153 | /* Expire entries before listing */ |
| 154 | void (*expire)(struct ip_set *set); |
| 155 | /* List set header data */ |
| 156 | int (*head)(struct ip_set *set, struct sk_buff *skb); |
| 157 | /* List elements */ |
| 158 | int (*list)(const struct ip_set *set, struct sk_buff *skb, |
| 159 | struct netlink_callback *cb); |
| 160 | |
| 161 | /* Return true if "b" set is the same as "a" |
| 162 | * according to the create set parameters */ |
| 163 | bool (*same_set)(const struct ip_set *a, const struct ip_set *b); |
| 164 | }; |
| 165 | |
| 166 | /* The core set type structure */ |
| 167 | struct ip_set_type { |
| 168 | struct list_head list; |
| 169 | |
| 170 | /* Typename */ |
| 171 | char name[IPSET_MAXNAMELEN]; |
| 172 | /* Protocol version */ |
| 173 | u8 protocol; |
| 174 | /* Set features to control swapping */ |
| 175 | u8 features; |
| 176 | /* Set type dimension */ |
| 177 | u8 dimension; |
Jan Engelhardt | c15f1c8 | 2012-02-14 00:24:10 +0100 | [diff] [blame] | 178 | /* |
| 179 | * Supported family: may be NFPROTO_UNSPEC for both |
| 180 | * NFPROTO_IPV4/NFPROTO_IPV6. |
| 181 | */ |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 182 | u8 family; |
Jozsef Kadlecsik | f1e00b3 | 2011-06-16 18:51:41 +0200 | [diff] [blame] | 183 | /* Type revisions */ |
| 184 | u8 revision_min, revision_max; |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 185 | |
| 186 | /* Create set */ |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 187 | int (*create)(struct net *net, struct ip_set *set, |
| 188 | struct nlattr *tb[], u32 flags); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 189 | |
| 190 | /* Attribute policies */ |
| 191 | const struct nla_policy create_policy[IPSET_ATTR_CREATE_MAX + 1]; |
| 192 | const struct nla_policy adt_policy[IPSET_ATTR_ADT_MAX + 1]; |
| 193 | |
| 194 | /* Set this to THIS_MODULE if you are a module, otherwise NULL */ |
| 195 | struct module *me; |
| 196 | }; |
| 197 | |
| 198 | /* register and unregister set type */ |
| 199 | extern int ip_set_type_register(struct ip_set_type *set_type); |
| 200 | extern void ip_set_type_unregister(struct ip_set_type *set_type); |
| 201 | |
| 202 | /* A generic IP set */ |
| 203 | struct ip_set { |
| 204 | /* The name of the set */ |
| 205 | char name[IPSET_MAXNAMELEN]; |
| 206 | /* Lock protecting the set data */ |
| 207 | rwlock_t lock; |
| 208 | /* References to the set */ |
Jozsef Kadlecsik | 2f9f28b | 2011-04-04 15:19:25 +0200 | [diff] [blame] | 209 | u32 ref; |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 210 | /* The core set type */ |
| 211 | struct ip_set_type *type; |
| 212 | /* The type variant doing the real job */ |
| 213 | const struct ip_set_type_variant *variant; |
| 214 | /* The actual INET family of the set */ |
| 215 | u8 family; |
Jozsef Kadlecsik | f1e00b3 | 2011-06-16 18:51:41 +0200 | [diff] [blame] | 216 | /* The type revision */ |
| 217 | u8 revision; |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 218 | /* Extensions */ |
| 219 | u8 extensions; |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 220 | /* Default timeout value, if enabled */ |
| 221 | u32 timeout; |
| 222 | /* Element data size */ |
| 223 | size_t dsize; |
| 224 | /* Offsets to extensions in elements */ |
| 225 | size_t offset[IPSET_EXT_ID_MAX]; |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 226 | /* The type specific data */ |
| 227 | void *data; |
| 228 | }; |
| 229 | |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 230 | static inline void |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 231 | ip_set_ext_destroy(struct ip_set *set, void *data) |
| 232 | { |
| 233 | /* Check that the extension is enabled for the set and |
| 234 | * call it's destroy function for its extension part in data. |
| 235 | */ |
| 236 | if (SET_WITH_COMMENT(set)) |
| 237 | ip_set_extensions[IPSET_EXT_ID_COMMENT].destroy( |
| 238 | ext_comment(data, set)); |
| 239 | } |
| 240 | |
| 241 | static inline int |
| 242 | ip_set_put_flags(struct sk_buff *skb, struct ip_set *set) |
| 243 | { |
| 244 | u32 cadt_flags = 0; |
| 245 | |
| 246 | if (SET_WITH_TIMEOUT(set)) |
| 247 | if (unlikely(nla_put_net32(skb, IPSET_ATTR_TIMEOUT, |
| 248 | htonl(set->timeout)))) |
| 249 | return -EMSGSIZE; |
| 250 | if (SET_WITH_COUNTER(set)) |
| 251 | cadt_flags |= IPSET_FLAG_WITH_COUNTERS; |
| 252 | if (SET_WITH_COMMENT(set)) |
| 253 | cadt_flags |= IPSET_FLAG_WITH_COMMENT; |
| 254 | |
| 255 | if (!cadt_flags) |
| 256 | return 0; |
| 257 | return nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(cadt_flags)); |
| 258 | } |
| 259 | |
| 260 | static inline void |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 261 | ip_set_add_bytes(u64 bytes, struct ip_set_counter *counter) |
| 262 | { |
| 263 | atomic64_add((long long)bytes, &(counter)->bytes); |
| 264 | } |
| 265 | |
| 266 | static inline void |
| 267 | ip_set_add_packets(u64 packets, struct ip_set_counter *counter) |
| 268 | { |
| 269 | atomic64_add((long long)packets, &(counter)->packets); |
| 270 | } |
| 271 | |
| 272 | static inline u64 |
| 273 | ip_set_get_bytes(const struct ip_set_counter *counter) |
| 274 | { |
| 275 | return (u64)atomic64_read(&(counter)->bytes); |
| 276 | } |
| 277 | |
| 278 | static inline u64 |
| 279 | ip_set_get_packets(const struct ip_set_counter *counter) |
| 280 | { |
| 281 | return (u64)atomic64_read(&(counter)->packets); |
| 282 | } |
| 283 | |
| 284 | static inline void |
| 285 | ip_set_update_counter(struct ip_set_counter *counter, |
| 286 | const struct ip_set_ext *ext, |
| 287 | struct ip_set_ext *mext, u32 flags) |
| 288 | { |
Jozsef Kadlecsik | 6e01781 | 2013-04-27 14:40:50 +0200 | [diff] [blame] | 289 | if (ext->packets != ULLONG_MAX && |
| 290 | !(flags & IPSET_FLAG_SKIP_COUNTER_UPDATE)) { |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 291 | ip_set_add_bytes(ext->bytes, counter); |
| 292 | ip_set_add_packets(ext->packets, counter); |
| 293 | } |
Jozsef Kadlecsik | 6e01781 | 2013-04-27 14:40:50 +0200 | [diff] [blame] | 294 | if (flags & IPSET_FLAG_MATCH_COUNTERS) { |
| 295 | mext->packets = ip_set_get_packets(counter); |
| 296 | mext->bytes = ip_set_get_bytes(counter); |
| 297 | } |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 298 | } |
| 299 | |
| 300 | static inline bool |
| 301 | ip_set_put_counter(struct sk_buff *skb, struct ip_set_counter *counter) |
| 302 | { |
| 303 | return nla_put_net64(skb, IPSET_ATTR_BYTES, |
| 304 | cpu_to_be64(ip_set_get_bytes(counter))) || |
| 305 | nla_put_net64(skb, IPSET_ATTR_PACKETS, |
| 306 | cpu_to_be64(ip_set_get_packets(counter))); |
| 307 | } |
| 308 | |
| 309 | static inline void |
| 310 | ip_set_init_counter(struct ip_set_counter *counter, |
| 311 | const struct ip_set_ext *ext) |
| 312 | { |
| 313 | if (ext->bytes != ULLONG_MAX) |
| 314 | atomic64_set(&(counter)->bytes, (long long)(ext->bytes)); |
| 315 | if (ext->packets != ULLONG_MAX) |
| 316 | atomic64_set(&(counter)->packets, (long long)(ext->packets)); |
| 317 | } |
| 318 | |
Jozsef Kadlecsik | 9330288 | 2013-10-18 11:41:55 +0200 | [diff] [blame^] | 319 | /* Netlink CB args */ |
| 320 | enum { |
| 321 | IPSET_CB_NET = 0, |
| 322 | IPSET_CB_DUMP, |
| 323 | IPSET_CB_INDEX, |
| 324 | IPSET_CB_ARG0, |
| 325 | IPSET_CB_ARG1, |
| 326 | IPSET_CB_ARG2, |
| 327 | }; |
| 328 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 329 | /* register and unregister set references */ |
Vitaly Lavrov | 1785e8f | 2013-09-30 17:07:02 +0200 | [diff] [blame] | 330 | extern ip_set_id_t ip_set_get_byname(struct net *net, |
| 331 | const char *name, struct ip_set **set); |
| 332 | extern void ip_set_put_byindex(struct net *net, ip_set_id_t index); |
| 333 | extern const char *ip_set_name_byindex(struct net *net, ip_set_id_t index); |
| 334 | extern ip_set_id_t ip_set_nfnl_get(struct net *net, const char *name); |
| 335 | extern ip_set_id_t ip_set_nfnl_get_byindex(struct net *net, ip_set_id_t index); |
| 336 | extern void ip_set_nfnl_put(struct net *net, ip_set_id_t index); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 337 | |
| 338 | /* API for iptables set match, and SET target */ |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 339 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 340 | extern int ip_set_add(ip_set_id_t id, const struct sk_buff *skb, |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 341 | const struct xt_action_param *par, |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 342 | struct ip_set_adt_opt *opt); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 343 | extern int ip_set_del(ip_set_id_t id, const struct sk_buff *skb, |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 344 | const struct xt_action_param *par, |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 345 | struct ip_set_adt_opt *opt); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 346 | extern int ip_set_test(ip_set_id_t id, const struct sk_buff *skb, |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 347 | const struct xt_action_param *par, |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 348 | struct ip_set_adt_opt *opt); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 349 | |
| 350 | /* Utility functions */ |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 351 | extern void *ip_set_alloc(size_t size); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 352 | extern void ip_set_free(void *members); |
| 353 | extern int ip_set_get_ipaddr4(struct nlattr *nla, __be32 *ipaddr); |
| 354 | extern int ip_set_get_ipaddr6(struct nlattr *nla, union nf_inet_addr *ipaddr); |
Jozsef Kadlecsik | 03c8b23 | 2013-09-07 00:43:52 +0200 | [diff] [blame] | 355 | extern size_t ip_set_elem_len(struct ip_set *set, struct nlattr *tb[], |
| 356 | size_t len); |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 357 | extern int ip_set_get_extensions(struct ip_set *set, struct nlattr *tb[], |
| 358 | struct ip_set_ext *ext); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 359 | |
| 360 | static inline int |
| 361 | ip_set_get_hostipaddr4(struct nlattr *nla, u32 *ipaddr) |
| 362 | { |
| 363 | __be32 ip; |
| 364 | int ret = ip_set_get_ipaddr4(nla, &ip); |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 365 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 366 | if (ret) |
| 367 | return ret; |
| 368 | *ipaddr = ntohl(ip); |
| 369 | return 0; |
| 370 | } |
| 371 | |
| 372 | /* Ignore IPSET_ERR_EXIST errors if asked to do so? */ |
| 373 | static inline bool |
| 374 | ip_set_eexist(int ret, u32 flags) |
| 375 | { |
| 376 | return ret == -IPSET_ERR_EXIST && (flags & IPSET_FLAG_EXIST); |
| 377 | } |
| 378 | |
Jozsef Kadlecsik | 43c56e5 | 2013-04-08 21:51:25 +0200 | [diff] [blame] | 379 | /* Match elements marked with nomatch */ |
| 380 | static inline bool |
Jozsef Kadlecsik | 0f1799b | 2013-09-16 20:04:53 +0200 | [diff] [blame] | 381 | ip_set_enomatch(int ret, u32 flags, enum ipset_adt adt, struct ip_set *set) |
Jozsef Kadlecsik | 43c56e5 | 2013-04-08 21:51:25 +0200 | [diff] [blame] | 382 | { |
| 383 | return adt == IPSET_TEST && |
Jozsef Kadlecsik | 0f1799b | 2013-09-16 20:04:53 +0200 | [diff] [blame] | 384 | (set->type->features & IPSET_TYPE_NOMATCH) && |
| 385 | ((flags >> 16) & IPSET_FLAG_NOMATCH) && |
| 386 | (ret > 0 || ret == -ENOTEMPTY); |
Jozsef Kadlecsik | 43c56e5 | 2013-04-08 21:51:25 +0200 | [diff] [blame] | 387 | } |
| 388 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 389 | /* Check the NLA_F_NET_BYTEORDER flag */ |
| 390 | static inline bool |
| 391 | ip_set_attr_netorder(struct nlattr *tb[], int type) |
| 392 | { |
| 393 | return tb[type] && (tb[type]->nla_type & NLA_F_NET_BYTEORDER); |
| 394 | } |
| 395 | |
| 396 | static inline bool |
| 397 | ip_set_optattr_netorder(struct nlattr *tb[], int type) |
| 398 | { |
| 399 | return !tb[type] || (tb[type]->nla_type & NLA_F_NET_BYTEORDER); |
| 400 | } |
| 401 | |
| 402 | /* Useful converters */ |
| 403 | static inline u32 |
| 404 | ip_set_get_h32(const struct nlattr *attr) |
| 405 | { |
| 406 | return ntohl(nla_get_be32(attr)); |
| 407 | } |
| 408 | |
| 409 | static inline u16 |
| 410 | ip_set_get_h16(const struct nlattr *attr) |
| 411 | { |
| 412 | return ntohs(nla_get_be16(attr)); |
| 413 | } |
| 414 | |
| 415 | #define ipset_nest_start(skb, attr) nla_nest_start(skb, attr | NLA_F_NESTED) |
| 416 | #define ipset_nest_end(skb, start) nla_nest_end(skb, start) |
| 417 | |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 418 | static inline int nla_put_ipaddr4(struct sk_buff *skb, int type, __be32 ipaddr) |
| 419 | { |
| 420 | struct nlattr *__nested = ipset_nest_start(skb, type); |
| 421 | int ret; |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 422 | |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 423 | if (!__nested) |
| 424 | return -EMSGSIZE; |
| 425 | ret = nla_put_net32(skb, IPSET_ATTR_IPADDR_IPV4, ipaddr); |
| 426 | if (!ret) |
| 427 | ipset_nest_end(skb, __nested); |
| 428 | return ret; |
| 429 | } |
| 430 | |
Jozsef Kadlecsik | 3ace95c | 2012-09-21 22:01:45 +0200 | [diff] [blame] | 431 | static inline int nla_put_ipaddr6(struct sk_buff *skb, int type, |
| 432 | const struct in6_addr *ipaddrptr) |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 433 | { |
| 434 | struct nlattr *__nested = ipset_nest_start(skb, type); |
| 435 | int ret; |
| 436 | |
| 437 | if (!__nested) |
| 438 | return -EMSGSIZE; |
| 439 | ret = nla_put(skb, IPSET_ATTR_IPADDR_IPV6, |
| 440 | sizeof(struct in6_addr), ipaddrptr); |
| 441 | if (!ret) |
| 442 | ipset_nest_end(skb, __nested); |
| 443 | return ret; |
| 444 | } |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 445 | |
| 446 | /* Get address from skbuff */ |
| 447 | static inline __be32 |
| 448 | ip4addr(const struct sk_buff *skb, bool src) |
| 449 | { |
| 450 | return src ? ip_hdr(skb)->saddr : ip_hdr(skb)->daddr; |
| 451 | } |
| 452 | |
| 453 | static inline void |
| 454 | ip4addrptr(const struct sk_buff *skb, bool src, __be32 *addr) |
| 455 | { |
| 456 | *addr = src ? ip_hdr(skb)->saddr : ip_hdr(skb)->daddr; |
| 457 | } |
| 458 | |
| 459 | static inline void |
| 460 | ip6addrptr(const struct sk_buff *skb, bool src, struct in6_addr *addr) |
| 461 | { |
| 462 | memcpy(addr, src ? &ipv6_hdr(skb)->saddr : &ipv6_hdr(skb)->daddr, |
| 463 | sizeof(*addr)); |
| 464 | } |
| 465 | |
| 466 | /* Calculate the bytes required to store the inclusive range of a-b */ |
| 467 | static inline int |
| 468 | bitmap_bytes(u32 a, u32 b) |
| 469 | { |
| 470 | return 4 * ((((b - a + 8) / 8) + 3) / 4); |
| 471 | } |
| 472 | |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 473 | #include <linux/netfilter/ipset/ip_set_timeout.h> |
Oliver Smith | 68b63f0 | 2013-09-22 20:56:30 +0200 | [diff] [blame] | 474 | #include <linux/netfilter/ipset/ip_set_comment.h> |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 475 | |
Jozsef Kadlecsik | 3fd986b | 2013-09-25 17:44:35 +0200 | [diff] [blame] | 476 | static inline int |
| 477 | ip_set_put_extensions(struct sk_buff *skb, const struct ip_set *set, |
| 478 | const void *e, bool active) |
| 479 | { |
| 480 | if (SET_WITH_TIMEOUT(set)) { |
| 481 | unsigned long *timeout = ext_timeout(e, set); |
| 482 | |
| 483 | if (nla_put_net32(skb, IPSET_ATTR_TIMEOUT, |
| 484 | htonl(active ? ip_set_timeout_get(timeout) |
| 485 | : *timeout))) |
| 486 | return -EMSGSIZE; |
| 487 | } |
| 488 | if (SET_WITH_COUNTER(set) && |
| 489 | ip_set_put_counter(skb, ext_counter(e, set))) |
| 490 | return -EMSGSIZE; |
| 491 | if (SET_WITH_COMMENT(set) && |
| 492 | ip_set_put_comment(skb, ext_comment(e, set))) |
| 493 | return -EMSGSIZE; |
| 494 | return 0; |
| 495 | } |
| 496 | |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 497 | #define IP_SET_INIT_KEXT(skb, opt, set) \ |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 498 | { .bytes = (skb)->len, .packets = 1, \ |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 499 | .timeout = ip_set_adt_opt_timeout(opt, set) } |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 500 | |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 501 | #define IP_SET_INIT_UEXT(set) \ |
Jozsef Kadlecsik | 34d666d | 2013-04-27 14:38:56 +0200 | [diff] [blame] | 502 | { .bytes = ULLONG_MAX, .packets = ULLONG_MAX, \ |
Jozsef Kadlecsik | ca134ce | 2013-09-07 00:10:07 +0200 | [diff] [blame] | 503 | .timeout = (set)->timeout } |
Jozsef Kadlecsik | 075e64c | 2013-04-27 14:28:55 +0200 | [diff] [blame] | 504 | |
Jozsef Kadlecsik | a04d8b6 | 2013-09-30 09:05:54 +0200 | [diff] [blame] | 505 | #define IP_SET_INIT_CIDR(a, b) ((a) ? (a) : (b)) |
| 506 | |
Jozsef Kadlecsik | 35b8dcf | 2013-04-30 23:02:43 +0200 | [diff] [blame] | 507 | #define IPSET_CONCAT(a, b) a##b |
| 508 | #define IPSET_TOKEN(a, b) IPSET_CONCAT(a, b) |
| 509 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 510 | #endif /*_IP_SET_H */ |