Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 1 | #ifndef _IP_SET_H |
| 2 | #define _IP_SET_H |
| 3 | |
| 4 | /* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu> |
| 5 | * Patrick Schaaf <bof@bof.de> |
| 6 | * Martin Josefsson <gandalf@wlug.westbo.se> |
| 7 | * Copyright (C) 2003-2011 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 as |
| 11 | * published by the Free Software Foundation. |
| 12 | */ |
| 13 | |
Jan Engelhardt | ae8ded1 | 2012-01-14 16:26:20 +0100 | [diff] [blame] | 14 | #include <linux/types.h> |
| 15 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 16 | /* The protocol version */ |
| 17 | #define IPSET_PROTOCOL 6 |
| 18 | |
| 19 | /* The max length of strings including NUL: set and type identifiers */ |
| 20 | #define IPSET_MAXNAMELEN 32 |
| 21 | |
| 22 | /* Message types and commands */ |
| 23 | enum ipset_cmd { |
| 24 | IPSET_CMD_NONE, |
| 25 | IPSET_CMD_PROTOCOL, /* 1: Return protocol version */ |
| 26 | IPSET_CMD_CREATE, /* 2: Create a new (empty) set */ |
| 27 | IPSET_CMD_DESTROY, /* 3: Destroy a (empty) set */ |
| 28 | IPSET_CMD_FLUSH, /* 4: Remove all elements from a set */ |
| 29 | IPSET_CMD_RENAME, /* 5: Rename a set */ |
| 30 | IPSET_CMD_SWAP, /* 6: Swap two sets */ |
| 31 | IPSET_CMD_LIST, /* 7: List sets */ |
| 32 | IPSET_CMD_SAVE, /* 8: Save sets */ |
| 33 | IPSET_CMD_ADD, /* 9: Add an element to a set */ |
| 34 | IPSET_CMD_DEL, /* 10: Delete an element from a set */ |
| 35 | IPSET_CMD_TEST, /* 11: Test an element in a set */ |
| 36 | IPSET_CMD_HEADER, /* 12: Get set header data only */ |
| 37 | IPSET_CMD_TYPE, /* 13: Get set type */ |
| 38 | IPSET_MSG_MAX, /* Netlink message commands */ |
| 39 | |
| 40 | /* Commands in userspace: */ |
| 41 | IPSET_CMD_RESTORE = IPSET_MSG_MAX, /* 14: Enter restore mode */ |
| 42 | IPSET_CMD_HELP, /* 15: Get help */ |
| 43 | IPSET_CMD_VERSION, /* 16: Get program version */ |
| 44 | IPSET_CMD_QUIT, /* 17: Quit from interactive mode */ |
| 45 | |
| 46 | IPSET_CMD_MAX, |
| 47 | |
| 48 | IPSET_CMD_COMMIT = IPSET_CMD_MAX, /* 18: Commit buffered commands */ |
| 49 | }; |
| 50 | |
| 51 | /* Attributes at command level */ |
| 52 | enum { |
| 53 | IPSET_ATTR_UNSPEC, |
| 54 | IPSET_ATTR_PROTOCOL, /* 1: Protocol version */ |
| 55 | IPSET_ATTR_SETNAME, /* 2: Name of the set */ |
| 56 | IPSET_ATTR_TYPENAME, /* 3: Typename */ |
| 57 | IPSET_ATTR_SETNAME2 = IPSET_ATTR_TYPENAME, /* Setname at rename/swap */ |
| 58 | IPSET_ATTR_REVISION, /* 4: Settype revision */ |
| 59 | IPSET_ATTR_FAMILY, /* 5: Settype family */ |
| 60 | IPSET_ATTR_FLAGS, /* 6: Flags at command level */ |
| 61 | IPSET_ATTR_DATA, /* 7: Nested attributes */ |
| 62 | IPSET_ATTR_ADT, /* 8: Multiple data containers */ |
| 63 | IPSET_ATTR_LINENO, /* 9: Restore lineno */ |
| 64 | IPSET_ATTR_PROTOCOL_MIN, /* 10: Minimal supported version number */ |
| 65 | IPSET_ATTR_REVISION_MIN = IPSET_ATTR_PROTOCOL_MIN, /* type rev min */ |
| 66 | __IPSET_ATTR_CMD_MAX, |
| 67 | }; |
| 68 | #define IPSET_ATTR_CMD_MAX (__IPSET_ATTR_CMD_MAX - 1) |
| 69 | |
| 70 | /* CADT specific attributes */ |
| 71 | enum { |
| 72 | IPSET_ATTR_IP = IPSET_ATTR_UNSPEC + 1, |
| 73 | IPSET_ATTR_IP_FROM = IPSET_ATTR_IP, |
| 74 | IPSET_ATTR_IP_TO, /* 2 */ |
| 75 | IPSET_ATTR_CIDR, /* 3 */ |
| 76 | IPSET_ATTR_PORT, /* 4 */ |
| 77 | IPSET_ATTR_PORT_FROM = IPSET_ATTR_PORT, |
| 78 | IPSET_ATTR_PORT_TO, /* 5 */ |
| 79 | IPSET_ATTR_TIMEOUT, /* 6 */ |
| 80 | IPSET_ATTR_PROTO, /* 7 */ |
| 81 | IPSET_ATTR_CADT_FLAGS, /* 8 */ |
| 82 | IPSET_ATTR_CADT_LINENO = IPSET_ATTR_LINENO, /* 9 */ |
| 83 | /* Reserve empty slots */ |
| 84 | IPSET_ATTR_CADT_MAX = 16, |
| 85 | /* Create-only specific attributes */ |
| 86 | IPSET_ATTR_GC, |
| 87 | IPSET_ATTR_HASHSIZE, |
| 88 | IPSET_ATTR_MAXELEM, |
| 89 | IPSET_ATTR_NETMASK, |
| 90 | IPSET_ATTR_PROBES, |
| 91 | IPSET_ATTR_RESIZE, |
| 92 | IPSET_ATTR_SIZE, |
| 93 | /* Kernel-only */ |
| 94 | IPSET_ATTR_ELEMENTS, |
| 95 | IPSET_ATTR_REFERENCES, |
| 96 | IPSET_ATTR_MEMSIZE, |
| 97 | |
| 98 | __IPSET_ATTR_CREATE_MAX, |
| 99 | }; |
| 100 | #define IPSET_ATTR_CREATE_MAX (__IPSET_ATTR_CREATE_MAX - 1) |
| 101 | |
| 102 | /* ADT specific attributes */ |
| 103 | enum { |
| 104 | IPSET_ATTR_ETHER = IPSET_ATTR_CADT_MAX + 1, |
| 105 | IPSET_ATTR_NAME, |
| 106 | IPSET_ATTR_NAMEREF, |
| 107 | IPSET_ATTR_IP2, |
| 108 | IPSET_ATTR_CIDR2, |
Jozsef Kadlecsik | d0d9e0a | 2011-06-16 18:52:41 +0200 | [diff] [blame] | 109 | IPSET_ATTR_IP2_TO, |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 110 | IPSET_ATTR_IFACE, |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 111 | __IPSET_ATTR_ADT_MAX, |
| 112 | }; |
| 113 | #define IPSET_ATTR_ADT_MAX (__IPSET_ATTR_ADT_MAX - 1) |
| 114 | |
| 115 | /* IP specific attributes */ |
| 116 | enum { |
| 117 | IPSET_ATTR_IPADDR_IPV4 = IPSET_ATTR_UNSPEC + 1, |
| 118 | IPSET_ATTR_IPADDR_IPV6, |
| 119 | __IPSET_ATTR_IPADDR_MAX, |
| 120 | }; |
| 121 | #define IPSET_ATTR_IPADDR_MAX (__IPSET_ATTR_IPADDR_MAX - 1) |
| 122 | |
| 123 | /* Error codes */ |
| 124 | enum ipset_errno { |
| 125 | IPSET_ERR_PRIVATE = 4096, |
| 126 | IPSET_ERR_PROTOCOL, |
| 127 | IPSET_ERR_FIND_TYPE, |
| 128 | IPSET_ERR_MAX_SETS, |
| 129 | IPSET_ERR_BUSY, |
| 130 | IPSET_ERR_EXIST_SETNAME2, |
| 131 | IPSET_ERR_TYPE_MISMATCH, |
| 132 | IPSET_ERR_EXIST, |
| 133 | IPSET_ERR_INVALID_CIDR, |
| 134 | IPSET_ERR_INVALID_NETMASK, |
| 135 | IPSET_ERR_INVALID_FAMILY, |
| 136 | IPSET_ERR_TIMEOUT, |
| 137 | IPSET_ERR_REFERENCED, |
| 138 | IPSET_ERR_IPADDR_IPV4, |
| 139 | IPSET_ERR_IPADDR_IPV6, |
| 140 | |
| 141 | /* Type specific error codes */ |
| 142 | IPSET_ERR_TYPE_SPECIFIC = 4352, |
| 143 | }; |
| 144 | |
| 145 | /* Flags at command level */ |
| 146 | enum ipset_cmd_flags { |
| 147 | IPSET_FLAG_BIT_EXIST = 0, |
| 148 | IPSET_FLAG_EXIST = (1 << IPSET_FLAG_BIT_EXIST), |
Jozsef Kadlecsik | c1e2e04 | 2011-06-16 18:47:07 +0200 | [diff] [blame] | 149 | IPSET_FLAG_BIT_LIST_SETNAME = 1, |
| 150 | IPSET_FLAG_LIST_SETNAME = (1 << IPSET_FLAG_BIT_LIST_SETNAME), |
| 151 | IPSET_FLAG_BIT_LIST_HEADER = 2, |
| 152 | IPSET_FLAG_LIST_HEADER = (1 << IPSET_FLAG_BIT_LIST_HEADER), |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 153 | IPSET_FLAG_CMD_MAX = 15, /* Lower half */ |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 154 | }; |
| 155 | |
| 156 | /* Flags at CADT attribute level */ |
| 157 | enum ipset_cadt_flags { |
| 158 | IPSET_FLAG_BIT_BEFORE = 0, |
| 159 | IPSET_FLAG_BEFORE = (1 << IPSET_FLAG_BIT_BEFORE), |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 160 | IPSET_FLAG_BIT_PHYSDEV = 1, |
| 161 | IPSET_FLAG_PHYSDEV = (1 << IPSET_FLAG_BIT_PHYSDEV), |
Jozsef Kadlecsik | 2a7cef2 | 2012-01-14 17:16:36 +0100 | [diff] [blame] | 162 | IPSET_FLAG_BIT_NOMATCH = 2, |
| 163 | IPSET_FLAG_NOMATCH = (1 << IPSET_FLAG_BIT_NOMATCH), |
| 164 | IPSET_FLAG_CADT_MAX = 15, /* Upper half */ |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 165 | }; |
| 166 | |
| 167 | /* Commands with settype-specific attributes */ |
| 168 | enum ipset_adt { |
| 169 | IPSET_ADD, |
| 170 | IPSET_DEL, |
| 171 | IPSET_TEST, |
| 172 | IPSET_ADT_MAX, |
| 173 | IPSET_CREATE = IPSET_ADT_MAX, |
| 174 | IPSET_CADT_MAX, |
| 175 | }; |
| 176 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 177 | /* Sets are identified by an index in kernel space. Tweak with ip_set_id_t |
| 178 | * and IPSET_INVALID_ID if you want to increase the max number of sets. |
| 179 | */ |
Jan Engelhardt | ae8ded1 | 2012-01-14 16:26:20 +0100 | [diff] [blame] | 180 | typedef __u16 ip_set_id_t; |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 181 | |
| 182 | #define IPSET_INVALID_ID 65535 |
| 183 | |
| 184 | enum ip_set_dim { |
| 185 | IPSET_DIM_ZERO = 0, |
| 186 | IPSET_DIM_ONE, |
| 187 | IPSET_DIM_TWO, |
| 188 | IPSET_DIM_THREE, |
| 189 | /* Max dimension in elements. |
| 190 | * If changed, new revision of iptables match/target is required. |
| 191 | */ |
| 192 | IPSET_DIM_MAX = 6, |
| 193 | }; |
| 194 | |
| 195 | /* Option flags for kernel operations */ |
| 196 | enum ip_set_kopt { |
| 197 | IPSET_INV_MATCH = (1 << IPSET_DIM_ZERO), |
| 198 | IPSET_DIM_ONE_SRC = (1 << IPSET_DIM_ONE), |
| 199 | IPSET_DIM_TWO_SRC = (1 << IPSET_DIM_TWO), |
| 200 | IPSET_DIM_THREE_SRC = (1 << IPSET_DIM_THREE), |
| 201 | }; |
| 202 | |
Jan Engelhardt | ae8ded1 | 2012-01-14 16:26:20 +0100 | [diff] [blame] | 203 | #ifdef __KERNEL__ |
| 204 | #include <linux/ip.h> |
| 205 | #include <linux/ipv6.h> |
| 206 | #include <linux/netlink.h> |
| 207 | #include <linux/netfilter.h> |
| 208 | #include <linux/netfilter/x_tables.h> |
Jozsef Kadlecsik | 10111a6 | 2012-09-21 21:59:32 +0200 | [diff] [blame] | 209 | #include <linux/stringify.h> |
Jan Engelhardt | ae8ded1 | 2012-01-14 16:26:20 +0100 | [diff] [blame] | 210 | #include <linux/vmalloc.h> |
| 211 | #include <net/netlink.h> |
| 212 | |
Jozsef Kadlecsik | 10111a6 | 2012-09-21 21:59:32 +0200 | [diff] [blame] | 213 | #define _IP_SET_MODULE_DESC(a, b, c) \ |
| 214 | MODULE_DESCRIPTION(a " type of IP sets, revisions " b "-" c) |
| 215 | #define IP_SET_MODULE_DESC(a, b, c) \ |
| 216 | _IP_SET_MODULE_DESC(a, __stringify(b), __stringify(c)) |
| 217 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 218 | /* Set features */ |
| 219 | enum ip_set_feature { |
| 220 | IPSET_TYPE_IP_FLAG = 0, |
| 221 | IPSET_TYPE_IP = (1 << IPSET_TYPE_IP_FLAG), |
| 222 | IPSET_TYPE_PORT_FLAG = 1, |
| 223 | IPSET_TYPE_PORT = (1 << IPSET_TYPE_PORT_FLAG), |
| 224 | IPSET_TYPE_MAC_FLAG = 2, |
| 225 | IPSET_TYPE_MAC = (1 << IPSET_TYPE_MAC_FLAG), |
| 226 | IPSET_TYPE_IP2_FLAG = 3, |
| 227 | IPSET_TYPE_IP2 = (1 << IPSET_TYPE_IP2_FLAG), |
| 228 | IPSET_TYPE_NAME_FLAG = 4, |
| 229 | IPSET_TYPE_NAME = (1 << IPSET_TYPE_NAME_FLAG), |
Jozsef Kadlecsik | e385357 | 2011-06-16 19:00:48 +0200 | [diff] [blame] | 230 | IPSET_TYPE_IFACE_FLAG = 5, |
| 231 | IPSET_TYPE_IFACE = (1 << IPSET_TYPE_IFACE_FLAG), |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 232 | /* Strictly speaking not a feature, but a flag for dumping: |
| 233 | * this settype must be dumped last */ |
| 234 | IPSET_DUMP_LAST_FLAG = 7, |
| 235 | IPSET_DUMP_LAST = (1 << IPSET_DUMP_LAST_FLAG), |
| 236 | }; |
| 237 | |
| 238 | struct ip_set; |
| 239 | |
Jozsef Kadlecsik | 5416219 | 2011-06-16 18:40:55 +0200 | [diff] [blame] | 240 | typedef int (*ipset_adtfn)(struct ip_set *set, void *value, |
| 241 | u32 timeout, u32 flags); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 242 | |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 243 | /* Kernel API function options */ |
| 244 | struct ip_set_adt_opt { |
| 245 | u8 family; /* Actual protocol family */ |
| 246 | u8 dim; /* Dimension of match/target */ |
| 247 | u8 flags; /* Direction and negation flags */ |
| 248 | u32 cmdflags; /* Command-like flags */ |
| 249 | u32 timeout; /* Timeout value */ |
| 250 | }; |
| 251 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 252 | /* Set type, variant-specific part */ |
| 253 | struct ip_set_type_variant { |
| 254 | /* Kernelspace: test/add/del entries |
| 255 | * returns negative error code, |
| 256 | * zero for no match/success to add/delete |
| 257 | * positive for matching element */ |
Jozsef Kadlecsik | 3ace95c | 2012-09-21 22:01:45 +0200 | [diff] [blame^] | 258 | int (*kadt)(struct ip_set *set, const struct sk_buff *skb, |
Jozsef Kadlecsik | b66554c | 2011-06-16 18:56:47 +0200 | [diff] [blame] | 259 | const struct xt_action_param *par, |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 260 | enum ipset_adt adt, const struct ip_set_adt_opt *opt); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 261 | |
| 262 | /* Userspace: test/add/del entries |
| 263 | * returns negative error code, |
| 264 | * zero for no match/success to add/delete |
| 265 | * positive for matching element */ |
| 266 | int (*uadt)(struct ip_set *set, struct nlattr *tb[], |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame] | 267 | enum ipset_adt adt, u32 *lineno, u32 flags, bool retried); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 268 | |
| 269 | /* Low level add/del/test functions */ |
| 270 | ipset_adtfn adt[IPSET_ADT_MAX]; |
| 271 | |
| 272 | /* When adding entries and set is full, try to resize the set */ |
| 273 | int (*resize)(struct ip_set *set, bool retried); |
| 274 | /* Destroy the set */ |
| 275 | void (*destroy)(struct ip_set *set); |
| 276 | /* Flush the elements */ |
| 277 | void (*flush)(struct ip_set *set); |
| 278 | /* Expire entries before listing */ |
| 279 | void (*expire)(struct ip_set *set); |
| 280 | /* List set header data */ |
| 281 | int (*head)(struct ip_set *set, struct sk_buff *skb); |
| 282 | /* List elements */ |
| 283 | int (*list)(const struct ip_set *set, struct sk_buff *skb, |
| 284 | struct netlink_callback *cb); |
| 285 | |
| 286 | /* Return true if "b" set is the same as "a" |
| 287 | * according to the create set parameters */ |
| 288 | bool (*same_set)(const struct ip_set *a, const struct ip_set *b); |
| 289 | }; |
| 290 | |
| 291 | /* The core set type structure */ |
| 292 | struct ip_set_type { |
| 293 | struct list_head list; |
| 294 | |
| 295 | /* Typename */ |
| 296 | char name[IPSET_MAXNAMELEN]; |
| 297 | /* Protocol version */ |
| 298 | u8 protocol; |
| 299 | /* Set features to control swapping */ |
| 300 | u8 features; |
| 301 | /* Set type dimension */ |
| 302 | u8 dimension; |
Jan Engelhardt | c15f1c8 | 2012-02-14 00:24:10 +0100 | [diff] [blame] | 303 | /* |
| 304 | * Supported family: may be NFPROTO_UNSPEC for both |
| 305 | * NFPROTO_IPV4/NFPROTO_IPV6. |
| 306 | */ |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 307 | u8 family; |
Jozsef Kadlecsik | f1e00b3 | 2011-06-16 18:51:41 +0200 | [diff] [blame] | 308 | /* Type revisions */ |
| 309 | u8 revision_min, revision_max; |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 310 | |
| 311 | /* Create set */ |
| 312 | int (*create)(struct ip_set *set, struct nlattr *tb[], u32 flags); |
| 313 | |
| 314 | /* Attribute policies */ |
| 315 | const struct nla_policy create_policy[IPSET_ATTR_CREATE_MAX + 1]; |
| 316 | const struct nla_policy adt_policy[IPSET_ATTR_ADT_MAX + 1]; |
| 317 | |
| 318 | /* Set this to THIS_MODULE if you are a module, otherwise NULL */ |
| 319 | struct module *me; |
| 320 | }; |
| 321 | |
| 322 | /* register and unregister set type */ |
| 323 | extern int ip_set_type_register(struct ip_set_type *set_type); |
| 324 | extern void ip_set_type_unregister(struct ip_set_type *set_type); |
| 325 | |
| 326 | /* A generic IP set */ |
| 327 | struct ip_set { |
| 328 | /* The name of the set */ |
| 329 | char name[IPSET_MAXNAMELEN]; |
| 330 | /* Lock protecting the set data */ |
| 331 | rwlock_t lock; |
| 332 | /* References to the set */ |
Jozsef Kadlecsik | 2f9f28b | 2011-04-04 15:19:25 +0200 | [diff] [blame] | 333 | u32 ref; |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 334 | /* The core set type */ |
| 335 | struct ip_set_type *type; |
| 336 | /* The type variant doing the real job */ |
| 337 | const struct ip_set_type_variant *variant; |
| 338 | /* The actual INET family of the set */ |
| 339 | u8 family; |
Jozsef Kadlecsik | f1e00b3 | 2011-06-16 18:51:41 +0200 | [diff] [blame] | 340 | /* The type revision */ |
| 341 | u8 revision; |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 342 | /* The type specific data */ |
| 343 | void *data; |
| 344 | }; |
| 345 | |
| 346 | /* register and unregister set references */ |
| 347 | extern ip_set_id_t ip_set_get_byname(const char *name, struct ip_set **set); |
| 348 | extern void ip_set_put_byindex(ip_set_id_t index); |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 349 | extern const char *ip_set_name_byindex(ip_set_id_t index); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 350 | extern ip_set_id_t ip_set_nfnl_get(const char *name); |
| 351 | extern ip_set_id_t ip_set_nfnl_get_byindex(ip_set_id_t index); |
| 352 | extern void ip_set_nfnl_put(ip_set_id_t index); |
| 353 | |
| 354 | /* API for iptables set match, and SET target */ |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 355 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 356 | 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] | 357 | const struct xt_action_param *par, |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 358 | const struct ip_set_adt_opt *opt); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 359 | 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] | 360 | const struct xt_action_param *par, |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 361 | const struct ip_set_adt_opt *opt); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 362 | 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] | 363 | const struct xt_action_param *par, |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 364 | const struct ip_set_adt_opt *opt); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 365 | |
| 366 | /* Utility functions */ |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 367 | extern void *ip_set_alloc(size_t size); |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 368 | extern void ip_set_free(void *members); |
| 369 | extern int ip_set_get_ipaddr4(struct nlattr *nla, __be32 *ipaddr); |
| 370 | extern int ip_set_get_ipaddr6(struct nlattr *nla, union nf_inet_addr *ipaddr); |
| 371 | |
| 372 | static inline int |
| 373 | ip_set_get_hostipaddr4(struct nlattr *nla, u32 *ipaddr) |
| 374 | { |
| 375 | __be32 ip; |
| 376 | int ret = ip_set_get_ipaddr4(nla, &ip); |
Jozsef Kadlecsik | 15b4d93 | 2011-06-16 19:01:26 +0200 | [diff] [blame] | 377 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 378 | if (ret) |
| 379 | return ret; |
| 380 | *ipaddr = ntohl(ip); |
| 381 | return 0; |
| 382 | } |
| 383 | |
| 384 | /* Ignore IPSET_ERR_EXIST errors if asked to do so? */ |
| 385 | static inline bool |
| 386 | ip_set_eexist(int ret, u32 flags) |
| 387 | { |
| 388 | return ret == -IPSET_ERR_EXIST && (flags & IPSET_FLAG_EXIST); |
| 389 | } |
| 390 | |
| 391 | /* Check the NLA_F_NET_BYTEORDER flag */ |
| 392 | static inline bool |
| 393 | ip_set_attr_netorder(struct nlattr *tb[], int type) |
| 394 | { |
| 395 | return tb[type] && (tb[type]->nla_type & NLA_F_NET_BYTEORDER); |
| 396 | } |
| 397 | |
| 398 | static inline bool |
| 399 | ip_set_optattr_netorder(struct nlattr *tb[], int type) |
| 400 | { |
| 401 | return !tb[type] || (tb[type]->nla_type & NLA_F_NET_BYTEORDER); |
| 402 | } |
| 403 | |
| 404 | /* Useful converters */ |
| 405 | static inline u32 |
| 406 | ip_set_get_h32(const struct nlattr *attr) |
| 407 | { |
| 408 | return ntohl(nla_get_be32(attr)); |
| 409 | } |
| 410 | |
| 411 | static inline u16 |
| 412 | ip_set_get_h16(const struct nlattr *attr) |
| 413 | { |
| 414 | return ntohs(nla_get_be16(attr)); |
| 415 | } |
| 416 | |
| 417 | #define ipset_nest_start(skb, attr) nla_nest_start(skb, attr | NLA_F_NESTED) |
| 418 | #define ipset_nest_end(skb, start) nla_nest_end(skb, start) |
| 419 | |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 420 | static inline int nla_put_ipaddr4(struct sk_buff *skb, int type, __be32 ipaddr) |
| 421 | { |
| 422 | struct nlattr *__nested = ipset_nest_start(skb, type); |
| 423 | int ret; |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 424 | |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 425 | if (!__nested) |
| 426 | return -EMSGSIZE; |
| 427 | ret = nla_put_net32(skb, IPSET_ATTR_IPADDR_IPV4, ipaddr); |
| 428 | if (!ret) |
| 429 | ipset_nest_end(skb, __nested); |
| 430 | return ret; |
| 431 | } |
| 432 | |
Jozsef Kadlecsik | 3ace95c | 2012-09-21 22:01:45 +0200 | [diff] [blame^] | 433 | static inline int nla_put_ipaddr6(struct sk_buff *skb, int type, |
| 434 | const struct in6_addr *ipaddrptr) |
David S. Miller | 7cf7899 | 2012-04-01 19:54:46 -0400 | [diff] [blame] | 435 | { |
| 436 | struct nlattr *__nested = ipset_nest_start(skb, type); |
| 437 | int ret; |
| 438 | |
| 439 | if (!__nested) |
| 440 | return -EMSGSIZE; |
| 441 | ret = nla_put(skb, IPSET_ATTR_IPADDR_IPV6, |
| 442 | sizeof(struct in6_addr), ipaddrptr); |
| 443 | if (!ret) |
| 444 | ipset_nest_end(skb, __nested); |
| 445 | return ret; |
| 446 | } |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 447 | |
| 448 | /* Get address from skbuff */ |
| 449 | static inline __be32 |
| 450 | ip4addr(const struct sk_buff *skb, bool src) |
| 451 | { |
| 452 | return src ? ip_hdr(skb)->saddr : ip_hdr(skb)->daddr; |
| 453 | } |
| 454 | |
| 455 | static inline void |
| 456 | ip4addrptr(const struct sk_buff *skb, bool src, __be32 *addr) |
| 457 | { |
| 458 | *addr = src ? ip_hdr(skb)->saddr : ip_hdr(skb)->daddr; |
| 459 | } |
| 460 | |
| 461 | static inline void |
| 462 | ip6addrptr(const struct sk_buff *skb, bool src, struct in6_addr *addr) |
| 463 | { |
| 464 | memcpy(addr, src ? &ipv6_hdr(skb)->saddr : &ipv6_hdr(skb)->daddr, |
| 465 | sizeof(*addr)); |
| 466 | } |
| 467 | |
| 468 | /* Calculate the bytes required to store the inclusive range of a-b */ |
| 469 | static inline int |
| 470 | bitmap_bytes(u32 a, u32 b) |
| 471 | { |
| 472 | return 4 * ((((b - a + 8) / 8) + 3) / 4); |
| 473 | } |
| 474 | |
Jan Engelhardt | ae8ded1 | 2012-01-14 16:26:20 +0100 | [diff] [blame] | 475 | #endif /* __KERNEL__ */ |
| 476 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 477 | /* Interface to iptables/ip6tables */ |
| 478 | |
| 479 | #define SO_IP_SET 83 |
| 480 | |
| 481 | union ip_set_name_index { |
| 482 | char name[IPSET_MAXNAMELEN]; |
| 483 | ip_set_id_t index; |
| 484 | }; |
| 485 | |
| 486 | #define IP_SET_OP_GET_BYNAME 0x00000006 /* Get set index by name */ |
| 487 | struct ip_set_req_get_set { |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 488 | unsigned int op; |
| 489 | unsigned int version; |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 490 | union ip_set_name_index set; |
| 491 | }; |
| 492 | |
| 493 | #define IP_SET_OP_GET_BYINDEX 0x00000007 /* Get set name by index */ |
| 494 | /* Uses ip_set_req_get_set */ |
| 495 | |
| 496 | #define IP_SET_OP_VERSION 0x00000100 /* Ask kernel version */ |
| 497 | struct ip_set_req_version { |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 498 | unsigned int op; |
| 499 | unsigned int version; |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 500 | }; |
| 501 | |
Jozsef Kadlecsik | a7b4f98 | 2011-02-01 15:28:35 +0100 | [diff] [blame] | 502 | #endif /*_IP_SET_H */ |