Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 1 | /* Copyright (C) 2003-2011 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 as |
| 5 | * published by the Free Software Foundation. |
| 6 | */ |
| 7 | |
| 8 | /* Kernel module implementing an IP set type: the hash:net type */ |
| 9 | |
| 10 | #include <linux/jhash.h> |
| 11 | #include <linux/module.h> |
| 12 | #include <linux/ip.h> |
| 13 | #include <linux/skbuff.h> |
| 14 | #include <linux/errno.h> |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 15 | #include <linux/random.h> |
| 16 | #include <net/ip.h> |
| 17 | #include <net/ipv6.h> |
| 18 | #include <net/netlink.h> |
| 19 | |
| 20 | #include <linux/netfilter.h> |
| 21 | #include <linux/netfilter/ipset/pfxlen.h> |
| 22 | #include <linux/netfilter/ipset/ip_set.h> |
| 23 | #include <linux/netfilter/ipset/ip_set_timeout.h> |
| 24 | #include <linux/netfilter/ipset/ip_set_hash.h> |
| 25 | |
| 26 | MODULE_LICENSE("GPL"); |
| 27 | MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); |
| 28 | MODULE_DESCRIPTION("hash:net type of IP sets"); |
| 29 | MODULE_ALIAS("ip_set_hash:net"); |
| 30 | |
| 31 | /* Type specific function prefix */ |
| 32 | #define TYPE hash_net |
| 33 | |
| 34 | static bool |
| 35 | hash_net_same_set(const struct ip_set *a, const struct ip_set *b); |
| 36 | |
| 37 | #define hash_net4_same_set hash_net_same_set |
| 38 | #define hash_net6_same_set hash_net_same_set |
| 39 | |
| 40 | /* The type variant functions: IPv4 */ |
| 41 | |
| 42 | /* Member elements without timeout */ |
| 43 | struct hash_net4_elem { |
| 44 | __be32 ip; |
| 45 | u16 padding0; |
| 46 | u8 padding1; |
| 47 | u8 cidr; |
| 48 | }; |
| 49 | |
| 50 | /* Member elements with timeout support */ |
| 51 | struct hash_net4_telem { |
| 52 | __be32 ip; |
| 53 | u16 padding0; |
| 54 | u8 padding1; |
| 55 | u8 cidr; |
| 56 | unsigned long timeout; |
| 57 | }; |
| 58 | |
| 59 | static inline bool |
| 60 | hash_net4_data_equal(const struct hash_net4_elem *ip1, |
| 61 | const struct hash_net4_elem *ip2) |
| 62 | { |
| 63 | return ip1->ip == ip2->ip && ip1->cidr == ip2->cidr; |
| 64 | } |
| 65 | |
| 66 | static inline bool |
| 67 | hash_net4_data_isnull(const struct hash_net4_elem *elem) |
| 68 | { |
| 69 | return elem->cidr == 0; |
| 70 | } |
| 71 | |
| 72 | static inline void |
| 73 | hash_net4_data_copy(struct hash_net4_elem *dst, |
| 74 | const struct hash_net4_elem *src) |
| 75 | { |
| 76 | dst->ip = src->ip; |
| 77 | dst->cidr = src->cidr; |
| 78 | } |
| 79 | |
| 80 | static inline void |
| 81 | hash_net4_data_netmask(struct hash_net4_elem *elem, u8 cidr) |
| 82 | { |
| 83 | elem->ip &= ip_set_netmask(cidr); |
| 84 | elem->cidr = cidr; |
| 85 | } |
| 86 | |
| 87 | /* Zero CIDR values cannot be stored */ |
| 88 | static inline void |
| 89 | hash_net4_data_zero_out(struct hash_net4_elem *elem) |
| 90 | { |
| 91 | elem->cidr = 0; |
| 92 | } |
| 93 | |
| 94 | static bool |
| 95 | hash_net4_data_list(struct sk_buff *skb, const struct hash_net4_elem *data) |
| 96 | { |
| 97 | NLA_PUT_IPADDR4(skb, IPSET_ATTR_IP, data->ip); |
| 98 | NLA_PUT_U8(skb, IPSET_ATTR_CIDR, data->cidr); |
| 99 | return 0; |
| 100 | |
| 101 | nla_put_failure: |
| 102 | return 1; |
| 103 | } |
| 104 | |
| 105 | static bool |
| 106 | hash_net4_data_tlist(struct sk_buff *skb, const struct hash_net4_elem *data) |
| 107 | { |
| 108 | const struct hash_net4_telem *tdata = |
| 109 | (const struct hash_net4_telem *)data; |
| 110 | |
| 111 | NLA_PUT_IPADDR4(skb, IPSET_ATTR_IP, tdata->ip); |
| 112 | NLA_PUT_U8(skb, IPSET_ATTR_CIDR, tdata->cidr); |
| 113 | NLA_PUT_NET32(skb, IPSET_ATTR_TIMEOUT, |
| 114 | htonl(ip_set_timeout_get(tdata->timeout))); |
| 115 | |
| 116 | return 0; |
| 117 | |
| 118 | nla_put_failure: |
| 119 | return 1; |
| 120 | } |
| 121 | |
| 122 | #define IP_SET_HASH_WITH_NETS |
| 123 | |
| 124 | #define PF 4 |
| 125 | #define HOST_MASK 32 |
| 126 | #include <linux/netfilter/ipset/ip_set_ahash.h> |
| 127 | |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame^] | 128 | static inline void |
| 129 | hash_net4_data_next(struct ip_set_hash *h, |
| 130 | const struct hash_net4_elem *d) |
| 131 | { |
| 132 | } |
| 133 | |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 134 | static int |
| 135 | hash_net4_kadt(struct ip_set *set, const struct sk_buff *skb, |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 136 | enum ipset_adt adt, const struct ip_set_adt_opt *opt) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 137 | { |
| 138 | const struct ip_set_hash *h = set->data; |
| 139 | ipset_adtfn adtfn = set->variant->adt[adt]; |
| 140 | struct hash_net4_elem data = { .cidr = h->nets[0].cidr || HOST_MASK }; |
| 141 | |
| 142 | if (data.cidr == 0) |
| 143 | return -EINVAL; |
| 144 | if (adt == IPSET_TEST) |
| 145 | data.cidr = HOST_MASK; |
| 146 | |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 147 | ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &data.ip); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 148 | data.ip &= ip_set_netmask(data.cidr); |
| 149 | |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 150 | return adtfn(set, &data, opt_timeout(opt, h), opt->cmdflags); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 151 | } |
| 152 | |
| 153 | static int |
| 154 | hash_net4_uadt(struct ip_set *set, struct nlattr *tb[], |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame^] | 155 | enum ipset_adt adt, u32 *lineno, u32 flags, bool retried) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 156 | { |
| 157 | const struct ip_set_hash *h = set->data; |
| 158 | ipset_adtfn adtfn = set->variant->adt[adt]; |
| 159 | struct hash_net4_elem data = { .cidr = HOST_MASK }; |
| 160 | u32 timeout = h->timeout; |
| 161 | int ret; |
| 162 | |
| 163 | if (unlikely(!tb[IPSET_ATTR_IP] || |
| 164 | !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT))) |
| 165 | return -IPSET_ERR_PROTOCOL; |
| 166 | |
| 167 | if (tb[IPSET_ATTR_LINENO]) |
| 168 | *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]); |
| 169 | |
| 170 | ret = ip_set_get_ipaddr4(tb[IPSET_ATTR_IP], &data.ip); |
| 171 | if (ret) |
| 172 | return ret; |
| 173 | |
| 174 | if (tb[IPSET_ATTR_CIDR]) |
| 175 | data.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]); |
| 176 | |
| 177 | if (!data.cidr) |
| 178 | return -IPSET_ERR_INVALID_CIDR; |
| 179 | |
| 180 | data.ip &= ip_set_netmask(data.cidr); |
| 181 | |
| 182 | if (tb[IPSET_ATTR_TIMEOUT]) { |
| 183 | if (!with_timeout(h->timeout)) |
| 184 | return -IPSET_ERR_TIMEOUT; |
| 185 | timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]); |
| 186 | } |
| 187 | |
Jozsef Kadlecsik | 5416219 | 2011-06-16 18:40:55 +0200 | [diff] [blame] | 188 | ret = adtfn(set, &data, timeout, flags); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 189 | |
| 190 | return ip_set_eexist(ret, flags) ? 0 : ret; |
| 191 | } |
| 192 | |
| 193 | static bool |
| 194 | hash_net_same_set(const struct ip_set *a, const struct ip_set *b) |
| 195 | { |
| 196 | const struct ip_set_hash *x = a->data; |
| 197 | const struct ip_set_hash *y = b->data; |
| 198 | |
| 199 | /* Resizing changes htable_bits, so we ignore it */ |
| 200 | return x->maxelem == y->maxelem && |
| 201 | x->timeout == y->timeout; |
| 202 | } |
| 203 | |
| 204 | /* The type variant functions: IPv6 */ |
| 205 | |
| 206 | struct hash_net6_elem { |
| 207 | union nf_inet_addr ip; |
| 208 | u16 padding0; |
| 209 | u8 padding1; |
| 210 | u8 cidr; |
| 211 | }; |
| 212 | |
| 213 | struct hash_net6_telem { |
| 214 | union nf_inet_addr ip; |
| 215 | u16 padding0; |
| 216 | u8 padding1; |
| 217 | u8 cidr; |
| 218 | unsigned long timeout; |
| 219 | }; |
| 220 | |
| 221 | static inline bool |
| 222 | hash_net6_data_equal(const struct hash_net6_elem *ip1, |
| 223 | const struct hash_net6_elem *ip2) |
| 224 | { |
| 225 | return ipv6_addr_cmp(&ip1->ip.in6, &ip2->ip.in6) == 0 && |
| 226 | ip1->cidr == ip2->cidr; |
| 227 | } |
| 228 | |
| 229 | static inline bool |
| 230 | hash_net6_data_isnull(const struct hash_net6_elem *elem) |
| 231 | { |
| 232 | return elem->cidr == 0; |
| 233 | } |
| 234 | |
| 235 | static inline void |
| 236 | hash_net6_data_copy(struct hash_net6_elem *dst, |
| 237 | const struct hash_net6_elem *src) |
| 238 | { |
| 239 | ipv6_addr_copy(&dst->ip.in6, &src->ip.in6); |
| 240 | dst->cidr = src->cidr; |
| 241 | } |
| 242 | |
| 243 | static inline void |
| 244 | hash_net6_data_zero_out(struct hash_net6_elem *elem) |
| 245 | { |
| 246 | elem->cidr = 0; |
| 247 | } |
| 248 | |
| 249 | static inline void |
| 250 | ip6_netmask(union nf_inet_addr *ip, u8 prefix) |
| 251 | { |
| 252 | ip->ip6[0] &= ip_set_netmask6(prefix)[0]; |
| 253 | ip->ip6[1] &= ip_set_netmask6(prefix)[1]; |
| 254 | ip->ip6[2] &= ip_set_netmask6(prefix)[2]; |
| 255 | ip->ip6[3] &= ip_set_netmask6(prefix)[3]; |
| 256 | } |
| 257 | |
| 258 | static inline void |
| 259 | hash_net6_data_netmask(struct hash_net6_elem *elem, u8 cidr) |
| 260 | { |
| 261 | ip6_netmask(&elem->ip, cidr); |
| 262 | elem->cidr = cidr; |
| 263 | } |
| 264 | |
| 265 | static bool |
| 266 | hash_net6_data_list(struct sk_buff *skb, const struct hash_net6_elem *data) |
| 267 | { |
| 268 | NLA_PUT_IPADDR6(skb, IPSET_ATTR_IP, &data->ip); |
| 269 | NLA_PUT_U8(skb, IPSET_ATTR_CIDR, data->cidr); |
| 270 | return 0; |
| 271 | |
| 272 | nla_put_failure: |
| 273 | return 1; |
| 274 | } |
| 275 | |
| 276 | static bool |
| 277 | hash_net6_data_tlist(struct sk_buff *skb, const struct hash_net6_elem *data) |
| 278 | { |
| 279 | const struct hash_net6_telem *e = |
| 280 | (const struct hash_net6_telem *)data; |
| 281 | |
| 282 | NLA_PUT_IPADDR6(skb, IPSET_ATTR_IP, &e->ip); |
| 283 | NLA_PUT_U8(skb, IPSET_ATTR_CIDR, e->cidr); |
| 284 | NLA_PUT_NET32(skb, IPSET_ATTR_TIMEOUT, |
| 285 | htonl(ip_set_timeout_get(e->timeout))); |
| 286 | return 0; |
| 287 | |
| 288 | nla_put_failure: |
| 289 | return 1; |
| 290 | } |
| 291 | |
| 292 | #undef PF |
| 293 | #undef HOST_MASK |
| 294 | |
| 295 | #define PF 6 |
| 296 | #define HOST_MASK 128 |
| 297 | #include <linux/netfilter/ipset/ip_set_ahash.h> |
| 298 | |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame^] | 299 | static inline void |
| 300 | hash_net6_data_next(struct ip_set_hash *h, |
| 301 | const struct hash_net6_elem *d) |
| 302 | { |
| 303 | } |
| 304 | |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 305 | static int |
| 306 | hash_net6_kadt(struct ip_set *set, const struct sk_buff *skb, |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 307 | enum ipset_adt adt, const struct ip_set_adt_opt *opt) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 308 | { |
| 309 | const struct ip_set_hash *h = set->data; |
| 310 | ipset_adtfn adtfn = set->variant->adt[adt]; |
| 311 | struct hash_net6_elem data = { .cidr = h->nets[0].cidr || HOST_MASK }; |
| 312 | |
| 313 | if (data.cidr == 0) |
| 314 | return -EINVAL; |
| 315 | if (adt == IPSET_TEST) |
| 316 | data.cidr = HOST_MASK; |
| 317 | |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 318 | ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &data.ip.in6); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 319 | ip6_netmask(&data.ip, data.cidr); |
| 320 | |
Jozsef Kadlecsik | ac8cc92 | 2011-06-16 18:42:40 +0200 | [diff] [blame] | 321 | return adtfn(set, &data, opt_timeout(opt, h), opt->cmdflags); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 322 | } |
| 323 | |
| 324 | static int |
| 325 | hash_net6_uadt(struct ip_set *set, struct nlattr *tb[], |
Jozsef Kadlecsik | 3d14b17 | 2011-06-16 18:49:17 +0200 | [diff] [blame^] | 326 | enum ipset_adt adt, u32 *lineno, u32 flags, bool retried) |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 327 | { |
| 328 | const struct ip_set_hash *h = set->data; |
| 329 | ipset_adtfn adtfn = set->variant->adt[adt]; |
| 330 | struct hash_net6_elem data = { .cidr = HOST_MASK }; |
| 331 | u32 timeout = h->timeout; |
| 332 | int ret; |
| 333 | |
| 334 | if (unlikely(!tb[IPSET_ATTR_IP] || |
| 335 | !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT))) |
| 336 | return -IPSET_ERR_PROTOCOL; |
| 337 | |
| 338 | if (tb[IPSET_ATTR_LINENO]) |
| 339 | *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]); |
| 340 | |
| 341 | ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &data.ip); |
| 342 | if (ret) |
| 343 | return ret; |
| 344 | |
| 345 | if (tb[IPSET_ATTR_CIDR]) |
| 346 | data.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]); |
| 347 | |
| 348 | if (!data.cidr) |
| 349 | return -IPSET_ERR_INVALID_CIDR; |
| 350 | |
| 351 | ip6_netmask(&data.ip, data.cidr); |
| 352 | |
| 353 | if (tb[IPSET_ATTR_TIMEOUT]) { |
| 354 | if (!with_timeout(h->timeout)) |
| 355 | return -IPSET_ERR_TIMEOUT; |
| 356 | timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]); |
| 357 | } |
| 358 | |
Jozsef Kadlecsik | 5416219 | 2011-06-16 18:40:55 +0200 | [diff] [blame] | 359 | ret = adtfn(set, &data, timeout, flags); |
Jozsef Kadlecsik | b383702 | 2011-02-01 15:52:54 +0100 | [diff] [blame] | 360 | |
| 361 | return ip_set_eexist(ret, flags) ? 0 : ret; |
| 362 | } |
| 363 | |
| 364 | /* Create hash:ip type of sets */ |
| 365 | |
| 366 | static int |
| 367 | hash_net_create(struct ip_set *set, struct nlattr *tb[], u32 flags) |
| 368 | { |
| 369 | u32 hashsize = IPSET_DEFAULT_HASHSIZE, maxelem = IPSET_DEFAULT_MAXELEM; |
| 370 | struct ip_set_hash *h; |
| 371 | u8 hbits; |
| 372 | |
| 373 | if (!(set->family == AF_INET || set->family == AF_INET6)) |
| 374 | return -IPSET_ERR_INVALID_FAMILY; |
| 375 | |
| 376 | if (unlikely(!ip_set_optattr_netorder(tb, IPSET_ATTR_HASHSIZE) || |
| 377 | !ip_set_optattr_netorder(tb, IPSET_ATTR_MAXELEM) || |
| 378 | !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT))) |
| 379 | return -IPSET_ERR_PROTOCOL; |
| 380 | |
| 381 | if (tb[IPSET_ATTR_HASHSIZE]) { |
| 382 | hashsize = ip_set_get_h32(tb[IPSET_ATTR_HASHSIZE]); |
| 383 | if (hashsize < IPSET_MIMINAL_HASHSIZE) |
| 384 | hashsize = IPSET_MIMINAL_HASHSIZE; |
| 385 | } |
| 386 | |
| 387 | if (tb[IPSET_ATTR_MAXELEM]) |
| 388 | maxelem = ip_set_get_h32(tb[IPSET_ATTR_MAXELEM]); |
| 389 | |
| 390 | h = kzalloc(sizeof(*h) |
| 391 | + sizeof(struct ip_set_hash_nets) |
| 392 | * (set->family == AF_INET ? 32 : 128), GFP_KERNEL); |
| 393 | if (!h) |
| 394 | return -ENOMEM; |
| 395 | |
| 396 | h->maxelem = maxelem; |
| 397 | get_random_bytes(&h->initval, sizeof(h->initval)); |
| 398 | h->timeout = IPSET_NO_TIMEOUT; |
| 399 | |
| 400 | hbits = htable_bits(hashsize); |
| 401 | h->table = ip_set_alloc( |
| 402 | sizeof(struct htable) |
| 403 | + jhash_size(hbits) * sizeof(struct hbucket)); |
| 404 | if (!h->table) { |
| 405 | kfree(h); |
| 406 | return -ENOMEM; |
| 407 | } |
| 408 | h->table->htable_bits = hbits; |
| 409 | |
| 410 | set->data = h; |
| 411 | |
| 412 | if (tb[IPSET_ATTR_TIMEOUT]) { |
| 413 | h->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]); |
| 414 | |
| 415 | set->variant = set->family == AF_INET |
| 416 | ? &hash_net4_tvariant : &hash_net6_tvariant; |
| 417 | |
| 418 | if (set->family == AF_INET) |
| 419 | hash_net4_gc_init(set); |
| 420 | else |
| 421 | hash_net6_gc_init(set); |
| 422 | } else { |
| 423 | set->variant = set->family == AF_INET |
| 424 | ? &hash_net4_variant : &hash_net6_variant; |
| 425 | } |
| 426 | |
| 427 | pr_debug("create %s hashsize %u (%u) maxelem %u: %p(%p)\n", |
| 428 | set->name, jhash_size(h->table->htable_bits), |
| 429 | h->table->htable_bits, h->maxelem, set->data, h->table); |
| 430 | |
| 431 | return 0; |
| 432 | } |
| 433 | |
| 434 | static struct ip_set_type hash_net_type __read_mostly = { |
| 435 | .name = "hash:net", |
| 436 | .protocol = IPSET_PROTOCOL, |
| 437 | .features = IPSET_TYPE_IP, |
| 438 | .dimension = IPSET_DIM_ONE, |
| 439 | .family = AF_UNSPEC, |
| 440 | .revision = 0, |
| 441 | .create = hash_net_create, |
| 442 | .create_policy = { |
| 443 | [IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 }, |
| 444 | [IPSET_ATTR_MAXELEM] = { .type = NLA_U32 }, |
| 445 | [IPSET_ATTR_PROBES] = { .type = NLA_U8 }, |
| 446 | [IPSET_ATTR_RESIZE] = { .type = NLA_U8 }, |
| 447 | [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 }, |
| 448 | }, |
| 449 | .adt_policy = { |
| 450 | [IPSET_ATTR_IP] = { .type = NLA_NESTED }, |
| 451 | [IPSET_ATTR_CIDR] = { .type = NLA_U8 }, |
| 452 | [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 }, |
| 453 | }, |
| 454 | .me = THIS_MODULE, |
| 455 | }; |
| 456 | |
| 457 | static int __init |
| 458 | hash_net_init(void) |
| 459 | { |
| 460 | return ip_set_type_register(&hash_net_type); |
| 461 | } |
| 462 | |
| 463 | static void __exit |
| 464 | hash_net_fini(void) |
| 465 | { |
| 466 | ip_set_type_unregister(&hash_net_type); |
| 467 | } |
| 468 | |
| 469 | module_init(hash_net_init); |
| 470 | module_exit(hash_net_fini); |