net/netfilter/ipset/ip_set_hash_ipportnet.c

   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:ip,port,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>
  15 #include <linux/random.h>
  16 #include <net/ip.h>
  17 #include <net/ipv6.h>
  18 #include <net/netlink.h>
  19 #include <net/tcp.h>
  20
  21 #include <linux/netfilter.h>
  22 #include <linux/netfilter/ipset/pfxlen.h>
  23 #include <linux/netfilter/ipset/ip_set.h>
  24 #include <linux/netfilter/ipset/ip_set_timeout.h>
  25 #include <linux/netfilter/ipset/ip_set_getport.h>
  26 #include <linux/netfilter/ipset/ip_set_hash.h>
  27
  28 MODULE_LICENSE("GPL");
  29 MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
  30 MODULE_DESCRIPTION("hash:ip,port,net type of IP sets");
  31 MODULE_ALIAS("ip_set_hash:ip,port,net");
  32
  33 /* Type specific function prefix */
  34 #define TYPE            hash_ipportnet
  35
  36 static bool
  37 hash_ipportnet_same_set(const struct ip_set *a, const struct ip_set *b);
  38
  39 #define hash_ipportnet4_same_set        hash_ipportnet_same_set
  40 #define hash_ipportnet6_same_set        hash_ipportnet_same_set
  41
  42 /* The type variant functions: IPv4 */
  43
  44 /* Member elements without timeout */
  45 struct hash_ipportnet4_elem {
  46         __be32 ip;
  47         __be32 ip2;
  48         __be16 port;
  49         u8 cidr;
  50         u8 proto;
  51 };
  52
  53 /* Member elements with timeout support */
  54 struct hash_ipportnet4_telem {
  55         __be32 ip;
  56         __be32 ip2;
  57         __be16 port;
  58         u8 cidr;
  59         u8 proto;
  60         unsigned long timeout;
  61 };
  62
  63 static inline bool
  64 hash_ipportnet4_data_equal(const struct hash_ipportnet4_elem *ip1,
  65                            const struct hash_ipportnet4_elem *ip2,
  66                            u32 *multi)
  67 {
  68         return ip1->ip == ip2->ip &&
  69                ip1->ip2 == ip2->ip2 &&
  70                ip1->cidr == ip2->cidr &&
  71                ip1->port == ip2->port &&
  72                ip1->proto == ip2->proto;
  73 }
  74
  75 static inline bool
  76 hash_ipportnet4_data_isnull(const struct hash_ipportnet4_elem *elem)
  77 {
  78         return elem->proto == 0;
  79 }
  80
  81 static inline void
  82 hash_ipportnet4_data_copy(struct hash_ipportnet4_elem *dst,
  83                           const struct hash_ipportnet4_elem *src)
  84 {
  85         memcpy(dst, src, sizeof(*dst));
  86 }
  87
  88 static inline void
  89 hash_ipportnet4_data_netmask(struct hash_ipportnet4_elem *elem, u8 cidr)
  90 {
  91         elem->ip2 &= ip_set_netmask(cidr);
  92         elem->cidr = cidr;
  93 }
  94
  95 static inline void
  96 hash_ipportnet4_data_zero_out(struct hash_ipportnet4_elem *elem)
  97 {
  98         elem->proto = 0;
  99 }
 100
 101 static bool
 102 hash_ipportnet4_data_list(struct sk_buff *skb,
 103                           const struct hash_ipportnet4_elem *data)
 104 {
 105         NLA_PUT_IPADDR4(skb, IPSET_ATTR_IP, data->ip);
 106         NLA_PUT_IPADDR4(skb, IPSET_ATTR_IP2, data->ip2);
 107         NLA_PUT_NET16(skb, IPSET_ATTR_PORT, data->port);
 108         NLA_PUT_U8(skb, IPSET_ATTR_CIDR2, data->cidr);
 109         NLA_PUT_U8(skb, IPSET_ATTR_PROTO, data->proto);
 110         return 0;
 111
 112 nla_put_failure:
 113         return 1;
 114 }
 115
 116 static bool
 117 hash_ipportnet4_data_tlist(struct sk_buff *skb,
 118                            const struct hash_ipportnet4_elem *data)
 119 {
 120         const struct hash_ipportnet4_telem *tdata =
 121                 (const struct hash_ipportnet4_telem *)data;
 122
 123         NLA_PUT_IPADDR4(skb, IPSET_ATTR_IP, tdata->ip);
 124         NLA_PUT_IPADDR4(skb, IPSET_ATTR_IP2, tdata->ip2);
 125         NLA_PUT_NET16(skb, IPSET_ATTR_PORT, tdata->port);
 126         NLA_PUT_U8(skb, IPSET_ATTR_CIDR2, data->cidr);
 127         NLA_PUT_U8(skb, IPSET_ATTR_PROTO, data->proto);
 128         NLA_PUT_NET32(skb, IPSET_ATTR_TIMEOUT,
 129                       htonl(ip_set_timeout_get(tdata->timeout)));
 130
 131         return 0;
 132
 133 nla_put_failure:
 134         return 1;
 135 }
 136
 137 #define IP_SET_HASH_WITH_PROTO
 138 #define IP_SET_HASH_WITH_NETS
 139
 140 #define PF              4
 141 #define HOST_MASK       32
 142 #include <linux/netfilter/ipset/ip_set_ahash.h>
 143
 144 static inline void
 145 hash_ipportnet4_data_next(struct ip_set_hash *h,
 146                           const struct hash_ipportnet4_elem *d)
 147 {
 148         h->next.ip = ntohl(d->ip);
 149         h->next.port = ntohs(d->port);
 150         h->next.ip2 = ntohl(d->ip2);
 151 }
 152
 153 static int
 154 hash_ipportnet4_kadt(struct ip_set *set, const struct sk_buff *skb,
 155                      const struct xt_action_param *par,
 156                      enum ipset_adt adt, const struct ip_set_adt_opt *opt)
 157 {
 158         const struct ip_set_hash *h = set->data;
 159         ipset_adtfn adtfn = set->variant->adt[adt];
 160         struct hash_ipportnet4_elem data = {
 161                 .cidr = h->nets[0].cidr ? h->nets[0].cidr : HOST_MASK
 162         };
 163
 164         if (data.cidr == 0)
 165                 return -EINVAL;
 166         if (adt == IPSET_TEST)
 167                 data.cidr = HOST_MASK;
 168
 169         if (!ip_set_get_ip4_port(skb, opt->flags & IPSET_DIM_TWO_SRC,
 170                                  &data.port, &data.proto))
 171                 return -EINVAL;
 172
 173         ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &data.ip);
 174         ip4addrptr(skb, opt->flags & IPSET_DIM_THREE_SRC, &data.ip2);
 175         data.ip2 &= ip_set_netmask(data.cidr);
 176
 177         return adtfn(set, &data, opt_timeout(opt, h), opt->cmdflags);
 178 }
 179
 180 static int
 181 hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
 182                      enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
 183 {
 184         const struct ip_set_hash *h = set->data;
 185         ipset_adtfn adtfn = set->variant->adt[adt];
 186         struct hash_ipportnet4_elem data = { .cidr = HOST_MASK };
 187         u32 ip, ip_to, p = 0, port, port_to;
 188         u32 ip2_from = 0, ip2_to, ip2_last, ip2;
 189         u32 timeout = h->timeout;
 190         bool with_ports = false;
 191         int ret;
 192
 193         if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
 194                      !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
 195                      !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
 196                      !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT)))
 197                 return -IPSET_ERR_PROTOCOL;
 198
 199         if (tb[IPSET_ATTR_LINENO])
 200                 *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
 201
 202         ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
 203         if (ret)
 204                 return ret;
 205
 206         ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2], &ip2_from);
 207         if (ret)
 208                 return ret;
 209
 210         if (tb[IPSET_ATTR_CIDR2]) {
 211                 data.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR2]);
 212                 if (!data.cidr)
 213                         return -IPSET_ERR_INVALID_CIDR;
 214         }
 215
 216         if (tb[IPSET_ATTR_PORT])
 217                 data.port = nla_get_be16(tb[IPSET_ATTR_PORT]);
 218         else
 219                 return -IPSET_ERR_PROTOCOL;
 220
 221         if (tb[IPSET_ATTR_PROTO]) {
 222                 data.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
 223                 with_ports = ip_set_proto_with_ports(data.proto);
 224
 225                 if (data.proto == 0)
 226                         return -IPSET_ERR_INVALID_PROTO;
 227         } else
 228                 return -IPSET_ERR_MISSING_PROTO;
 229
 230         if (!(with_ports || data.proto == IPPROTO_ICMP))
 231                 data.port = 0;
 232
 233         if (tb[IPSET_ATTR_TIMEOUT]) {
 234                 if (!with_timeout(h->timeout))
 235                         return -IPSET_ERR_TIMEOUT;
 236                 timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
 237         }
 238
 239         with_ports = with_ports && tb[IPSET_ATTR_PORT_TO];
 240         if (adt == IPSET_TEST ||
 241             !(tb[IPSET_ATTR_CIDR] || tb[IPSET_ATTR_IP_TO] || with_ports ||
 242               tb[IPSET_ATTR_IP2_TO])) {
 243                 data.ip = htonl(ip);
 244                 data.ip2 = htonl(ip2_from & ip_set_hostmask(data.cidr));
 245                 ret = adtfn(set, &data, timeout, flags);
 246                 return ip_set_eexist(ret, flags) ? 0 : ret;
 247         }
 248
 249         if (tb[IPSET_ATTR_IP_TO]) {
 250                 ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
 251                 if (ret)
 252                         return ret;
 253                 if (ip > ip_to)
 254                         swap(ip, ip_to);
 255         } else if (tb[IPSET_ATTR_CIDR]) {
 256                 u8 cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
 257
 258                 if (cidr > 32)
 259                         return -IPSET_ERR_INVALID_CIDR;
 260                 ip_set_mask_from_to(ip, ip_to, cidr);
 261         }
 262
 263         port_to = port = ntohs(data.port);
 264         if (tb[IPSET_ATTR_PORT_TO]) {
 265                 port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
 266                 if (port > port_to)
 267                         swap(port, port_to);
 268         }
 269         if (tb[IPSET_ATTR_IP2_TO]) {
 270                 ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2_TO], &ip2_to);
 271                 if (ret)
 272                         return ret;
 273                 if (ip2_from > ip2_to)
 274                         swap(ip2_from, ip2_to);
 275                 if (ip2_from + UINT_MAX == ip2_to)
 276                         return -IPSET_ERR_HASH_RANGE;
 277         } else {
 278                 ip_set_mask_from_to(ip2_from, ip2_to, data.cidr);
 279         }
 280
 281         if (retried)
 282                 ip = h->next.ip;
 283         for (; !before(ip_to, ip); ip++) {
 284                 data.ip = htonl(ip);
 285                 p = retried && ip == h->next.ip ? h->next.port : port;
 286                 for (; p <= port_to; p++) {
 287                         data.port = htons(p);
 288                         ip2 = retried && ip == h->next.ip && p == h->next.port
 289                                 ? h->next.ip2 : ip2_from;
 290                         while (!after(ip2, ip2_to)) {
 291                                 data.ip2 = htonl(ip2);
 292                                 ip2_last = ip_set_range_to_cidr(ip2, ip2_to,
 293                                                                 &data.cidr);
 294                                 ret = adtfn(set, &data, timeout, flags);
 295
 296                                 if (ret && !ip_set_eexist(ret, flags))
 297                                         return ret;
 298                                 else
 299                                         ret = 0;
 300                                 ip2 = ip2_last + 1;
 301                         }
 302                 }
 303         }
 304         return ret;
 305 }
 306
 307 static bool
 308 hash_ipportnet_same_set(const struct ip_set *a, const struct ip_set *b)
 309 {
 310         const struct ip_set_hash *x = a->data;
 311         const struct ip_set_hash *y = b->data;
 312
 313         /* Resizing changes htable_bits, so we ignore it */
 314         return x->maxelem == y->maxelem &&
 315                x->timeout == y->timeout;
 316 }
 317
 318 /* The type variant functions: IPv6 */
 319
 320 struct hash_ipportnet6_elem {
 321         union nf_inet_addr ip;
 322         union nf_inet_addr ip2;
 323         __be16 port;
 324         u8 cidr;
 325         u8 proto;
 326 };
 327
 328 struct hash_ipportnet6_telem {
 329         union nf_inet_addr ip;
 330         union nf_inet_addr ip2;
 331         __be16 port;
 332         u8 cidr;
 333         u8 proto;
 334         unsigned long timeout;
 335 };
 336
 337 static inline bool
 338 hash_ipportnet6_data_equal(const struct hash_ipportnet6_elem *ip1,
 339                            const struct hash_ipportnet6_elem *ip2,
 340                            u32 *multi)
 341 {
 342         return ipv6_addr_cmp(&ip1->ip.in6, &ip2->ip.in6) == 0 &&
 343                ipv6_addr_cmp(&ip1->ip2.in6, &ip2->ip2.in6) == 0 &&
 344                ip1->cidr == ip2->cidr &&
 345                ip1->port == ip2->port &&
 346                ip1->proto == ip2->proto;
 347 }
 348
 349 static inline bool
 350 hash_ipportnet6_data_isnull(const struct hash_ipportnet6_elem *elem)
 351 {
 352         return elem->proto == 0;
 353 }
 354
 355 static inline void
 356 hash_ipportnet6_data_copy(struct hash_ipportnet6_elem *dst,
 357                           const struct hash_ipportnet6_elem *src)
 358 {
 359         memcpy(dst, src, sizeof(*dst));
 360 }
 361
 362 static inline void
 363 hash_ipportnet6_data_zero_out(struct hash_ipportnet6_elem *elem)
 364 {
 365         elem->proto = 0;
 366 }
 367
 368 static inline void
 369 ip6_netmask(union nf_inet_addr *ip, u8 prefix)
 370 {
 371         ip->ip6[0] &= ip_set_netmask6(prefix)[0];
 372         ip->ip6[1] &= ip_set_netmask6(prefix)[1];
 373         ip->ip6[2] &= ip_set_netmask6(prefix)[2];
 374         ip->ip6[3] &= ip_set_netmask6(prefix)[3];
 375 }
 376
 377 static inline void
 378 hash_ipportnet6_data_netmask(struct hash_ipportnet6_elem *elem, u8 cidr)
 379 {
 380         ip6_netmask(&elem->ip2, cidr);
 381         elem->cidr = cidr;
 382 }
 383
 384 static bool
 385 hash_ipportnet6_data_list(struct sk_buff *skb,
 386                           const struct hash_ipportnet6_elem *data)
 387 {
 388         NLA_PUT_IPADDR6(skb, IPSET_ATTR_IP, &data->ip);
 389         NLA_PUT_IPADDR6(skb, IPSET_ATTR_IP2, &data->ip2);
 390         NLA_PUT_NET16(skb, IPSET_ATTR_PORT, data->port);
 391         NLA_PUT_U8(skb, IPSET_ATTR_CIDR2, data->cidr);
 392         NLA_PUT_U8(skb, IPSET_ATTR_PROTO, data->proto);
 393         return 0;
 394
 395 nla_put_failure:
 396         return 1;
 397 }
 398
 399 static bool
 400 hash_ipportnet6_data_tlist(struct sk_buff *skb,
 401                            const struct hash_ipportnet6_elem *data)
 402 {
 403         const struct hash_ipportnet6_telem *e =
 404                 (const struct hash_ipportnet6_telem *)data;
 405
 406         NLA_PUT_IPADDR6(skb, IPSET_ATTR_IP, &e->ip);
 407         NLA_PUT_IPADDR6(skb, IPSET_ATTR_IP2, &data->ip2);
 408         NLA_PUT_NET16(skb, IPSET_ATTR_PORT, data->port);
 409         NLA_PUT_U8(skb, IPSET_ATTR_CIDR2, data->cidr);
 410         NLA_PUT_U8(skb, IPSET_ATTR_PROTO, data->proto);
 411         NLA_PUT_NET32(skb, IPSET_ATTR_TIMEOUT,
 412                       htonl(ip_set_timeout_get(e->timeout)));
 413         return 0;
 414
 415 nla_put_failure:
 416         return 1;
 417 }
 418
 419 #undef PF
 420 #undef HOST_MASK
 421
 422 #define PF              6
 423 #define HOST_MASK       128
 424 #include <linux/netfilter/ipset/ip_set_ahash.h>
 425
 426 static inline void
 427 hash_ipportnet6_data_next(struct ip_set_hash *h,
 428                           const struct hash_ipportnet6_elem *d)
 429 {
 430         h->next.port = ntohs(d->port);
 431 }
 432
 433 static int
 434 hash_ipportnet6_kadt(struct ip_set *set, const struct sk_buff *skb,
 435                      const struct xt_action_param *par,
 436                      enum ipset_adt adt, const struct ip_set_adt_opt *opt)
 437 {
 438         const struct ip_set_hash *h = set->data;
 439         ipset_adtfn adtfn = set->variant->adt[adt];
 440         struct hash_ipportnet6_elem data = {
 441                 .cidr = h->nets[0].cidr ? h->nets[0].cidr : HOST_MASK
 442         };
 443
 444         if (data.cidr == 0)
 445                 return -EINVAL;
 446         if (adt == IPSET_TEST)
 447                 data.cidr = HOST_MASK;
 448
 449         if (!ip_set_get_ip6_port(skb, opt->flags & IPSET_DIM_TWO_SRC,
 450                                  &data.port, &data.proto))
 451                 return -EINVAL;
 452
 453         ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &data.ip.in6);
 454         ip6addrptr(skb, opt->flags & IPSET_DIM_THREE_SRC, &data.ip2.in6);
 455         ip6_netmask(&data.ip2, data.cidr);
 456
 457         return adtfn(set, &data, opt_timeout(opt, h), opt->cmdflags);
 458 }
 459
 460 static int
 461 hash_ipportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
 462                      enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
 463 {
 464         const struct ip_set_hash *h = set->data;
 465         ipset_adtfn adtfn = set->variant->adt[adt];
 466         struct hash_ipportnet6_elem data = { .cidr = HOST_MASK };
 467         u32 port, port_to;
 468         u32 timeout = h->timeout;
 469         bool with_ports = false;
 470         int ret;
 471
 472         if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
 473                      !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
 474                      !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
 475                      !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) ||
 476                      tb[IPSET_ATTR_IP_TO] ||
 477                      tb[IPSET_ATTR_CIDR]))
 478                 return -IPSET_ERR_PROTOCOL;
 479         if (unlikely(tb[IPSET_ATTR_IP_TO]))
 480                 return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;
 481
 482         if (tb[IPSET_ATTR_LINENO])
 483                 *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
 484
 485         ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &data.ip);
 486         if (ret)
 487                 return ret;
 488
 489         ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP2], &data.ip2);
 490         if (ret)
 491                 return ret;
 492
 493         if (tb[IPSET_ATTR_CIDR2])
 494                 data.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR2]);
 495
 496         if (!data.cidr)
 497                 return -IPSET_ERR_INVALID_CIDR;
 498
 499         ip6_netmask(&data.ip2, data.cidr);
 500
 501         if (tb[IPSET_ATTR_PORT])
 502                 data.port = nla_get_be16(tb[IPSET_ATTR_PORT]);
 503         else
 504                 return -IPSET_ERR_PROTOCOL;
 505
 506         if (tb[IPSET_ATTR_PROTO]) {
 507                 data.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
 508                 with_ports = ip_set_proto_with_ports(data.proto);
 509
 510                 if (data.proto == 0)
 511                         return -IPSET_ERR_INVALID_PROTO;
 512         } else
 513                 return -IPSET_ERR_MISSING_PROTO;
 514
 515         if (!(with_ports || data.proto == IPPROTO_ICMPV6))
 516                 data.port = 0;
 517
 518         if (tb[IPSET_ATTR_TIMEOUT]) {
 519                 if (!with_timeout(h->timeout))
 520                         return -IPSET_ERR_TIMEOUT;
 521                 timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
 522         }
 523
 524         if (adt == IPSET_TEST || !with_ports || !tb[IPSET_ATTR_PORT_TO]) {
 525                 ret = adtfn(set, &data, timeout, flags);
 526                 return ip_set_eexist(ret, flags) ? 0 : ret;
 527         }
 528
 529         port = ntohs(data.port);
 530         port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
 531         if (port > port_to)
 532                 swap(port, port_to);
 533
 534         if (retried)
 535                 port = h->next.port;
 536         for (; port <= port_to; port++) {
 537                 data.port = htons(port);
 538                 ret = adtfn(set, &data, timeout, flags);
 539
 540                 if (ret && !ip_set_eexist(ret, flags))
 541                         return ret;
 542                 else
 543                         ret = 0;
 544         }
 545         return ret;
 546 }
 547
 548 /* Create hash:ip type of sets */
 549
 550 static int
 551 hash_ipportnet_create(struct ip_set *set, struct nlattr *tb[], u32 flags)
 552 {
 553         struct ip_set_hash *h;
 554         u32 hashsize = IPSET_DEFAULT_HASHSIZE, maxelem = IPSET_DEFAULT_MAXELEM;
 555         u8 hbits;
 556
 557         if (!(set->family == AF_INET || set->family == AF_INET6))
 558                 return -IPSET_ERR_INVALID_FAMILY;
 559
 560         if (unlikely(!ip_set_optattr_netorder(tb, IPSET_ATTR_HASHSIZE) ||
 561                      !ip_set_optattr_netorder(tb, IPSET_ATTR_MAXELEM) ||
 562                      !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT)))
 563                 return -IPSET_ERR_PROTOCOL;
 564
 565         if (tb[IPSET_ATTR_HASHSIZE]) {
 566                 hashsize = ip_set_get_h32(tb[IPSET_ATTR_HASHSIZE]);
 567                 if (hashsize < IPSET_MIMINAL_HASHSIZE)
 568                         hashsize = IPSET_MIMINAL_HASHSIZE;
 569         }
 570
 571         if (tb[IPSET_ATTR_MAXELEM])
 572                 maxelem = ip_set_get_h32(tb[IPSET_ATTR_MAXELEM]);
 573
 574         h = kzalloc(sizeof(*h)
 575                     + sizeof(struct ip_set_hash_nets)
 576                       * (set->family == AF_INET ? 32 : 128), GFP_KERNEL);
 577         if (!h)
 578                 return -ENOMEM;
 579
 580         h->maxelem = maxelem;
 581         get_random_bytes(&h->initval, sizeof(h->initval));
 582         h->timeout = IPSET_NO_TIMEOUT;
 583
 584         hbits = htable_bits(hashsize);
 585         h->table = ip_set_alloc(
 586                         sizeof(struct htable)
 587                         + jhash_size(hbits) * sizeof(struct hbucket));
 588         if (!h->table) {
 589                 kfree(h);
 590                 return -ENOMEM;
 591         }
 592         h->table->htable_bits = hbits;
 593
 594         set->data = h;
 595
 596         if (tb[IPSET_ATTR_TIMEOUT]) {
 597                 h->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
 598
 599                 set->variant = set->family == AF_INET
 600                         ? &hash_ipportnet4_tvariant
 601                         : &hash_ipportnet6_tvariant;
 602
 603                 if (set->family == AF_INET)
 604                         hash_ipportnet4_gc_init(set);
 605                 else
 606                         hash_ipportnet6_gc_init(set);
 607         } else {
 608                 set->variant = set->family == AF_INET
 609                         ? &hash_ipportnet4_variant : &hash_ipportnet6_variant;
 610         }
 611
 612         pr_debug("create %s hashsize %u (%u) maxelem %u: %p(%p)\n",
 613                  set->name, jhash_size(h->table->htable_bits),
 614                  h->table->htable_bits, h->maxelem, set->data, h->table);
 615
 616         return 0;
 617 }
 618
 619 static struct ip_set_type hash_ipportnet_type __read_mostly = {
 620         .name           = "hash:ip,port,net",
 621         .protocol       = IPSET_PROTOCOL,
 622         .features       = IPSET_TYPE_IP | IPSET_TYPE_PORT | IPSET_TYPE_IP2,
 623         .dimension      = IPSET_DIM_THREE,
 624         .family         = AF_UNSPEC,
 625         .revision_min   = 0,
 626         /*                1        SCTP and UDPLITE support added */
 627         .revision_max   = 2,    /* Range as input support for IPv4 added */
 628         .create         = hash_ipportnet_create,
 629         .create_policy  = {
 630                 [IPSET_ATTR_HASHSIZE]   = { .type = NLA_U32 },
 631                 [IPSET_ATTR_MAXELEM]    = { .type = NLA_U32 },
 632                 [IPSET_ATTR_PROBES]     = { .type = NLA_U8 },
 633                 [IPSET_ATTR_RESIZE]     = { .type = NLA_U8  },
 634                 [IPSET_ATTR_TIMEOUT]    = { .type = NLA_U32 },
 635         },
 636         .adt_policy     = {
 637                 [IPSET_ATTR_IP]         = { .type = NLA_NESTED },
 638                 [IPSET_ATTR_IP_TO]      = { .type = NLA_NESTED },
 639                 [IPSET_ATTR_IP2]        = { .type = NLA_NESTED },
 640                 [IPSET_ATTR_IP2_TO]     = { .type = NLA_NESTED },
 641                 [IPSET_ATTR_PORT]       = { .type = NLA_U16 },
 642                 [IPSET_ATTR_PORT_TO]    = { .type = NLA_U16 },
 643                 [IPSET_ATTR_CIDR]       = { .type = NLA_U8 },
 644                 [IPSET_ATTR_CIDR2]      = { .type = NLA_U8 },
 645                 [IPSET_ATTR_PROTO]      = { .type = NLA_U8 },
 646                 [IPSET_ATTR_TIMEOUT]    = { .type = NLA_U32 },
 647                 [IPSET_ATTR_LINENO]     = { .type = NLA_U32 },
 648         },
 649         .me             = THIS_MODULE,
 650 };
 651
 652 static int __init
 653 hash_ipportnet_init(void)
 654 {
 655         return ip_set_type_register(&hash_ipportnet_type);
 656 }
 657
 658 static void __exit
 659 hash_ipportnet_fini(void)
 660 {
 661         ip_set_type_unregister(&hash_ipportnet_type);
 662 }
 663
 664 module_init(hash_ipportnet_init);
 665 module_exit(hash_ipportnet_fini);