include/linux/netfilter/ipset/ip_set.h

   1 /* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
   2  *                         Patrick Schaaf <bof@bof.de>
   3  *                         Martin Josefsson <gandalf@wlug.westbo.se>
   4  * Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
   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  */
  10 #ifndef _IP_SET_H
  11 #define _IP_SET_H
  12
  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>
  18 #include <linux/stringify.h>
  19 #include <linux/vmalloc.h>
  20 #include <net/netlink.h>
  21 #include <uapi/linux/netfilter/ipset/ip_set.h>
  22
  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
  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),
  40         IPSET_TYPE_IFACE_FLAG = 5,
  41         IPSET_TYPE_IFACE = (1 << IPSET_TYPE_IFACE_FLAG),
  42         IPSET_TYPE_MARK_FLAG = 6,
  43         IPSET_TYPE_MARK = (1 << IPSET_TYPE_MARK_FLAG),
  44         IPSET_TYPE_NOMATCH_FLAG = 7,
  45         IPSET_TYPE_NOMATCH = (1 << IPSET_TYPE_NOMATCH_FLAG),
  46         /* Strictly speaking not a feature, but a flag for dumping:
  47          * this settype must be dumped last */
  48         IPSET_DUMP_LAST_FLAG = 8,
  49         IPSET_DUMP_LAST = (1 << IPSET_DUMP_LAST_FLAG),
  50 };
  51
  52 /* Set extensions */
  53 enum ip_set_extension {
  54         IPSET_EXT_BIT_TIMEOUT = 0,
  55         IPSET_EXT_TIMEOUT = (1 << IPSET_EXT_BIT_TIMEOUT),
  56         IPSET_EXT_BIT_COUNTER = 1,
  57         IPSET_EXT_COUNTER = (1 << IPSET_EXT_BIT_COUNTER),
  58         IPSET_EXT_BIT_COMMENT = 2,
  59         IPSET_EXT_COMMENT = (1 << IPSET_EXT_BIT_COMMENT),
  60         IPSET_EXT_BIT_SKBINFO = 3,
  61         IPSET_EXT_SKBINFO = (1 << IPSET_EXT_BIT_SKBINFO),
  62         /* Mark set with an extension which needs to call destroy */
  63         IPSET_EXT_BIT_DESTROY = 7,
  64         IPSET_EXT_DESTROY = (1 << IPSET_EXT_BIT_DESTROY),
  65 };
  66
  67 #define SET_WITH_TIMEOUT(s)     ((s)->extensions & IPSET_EXT_TIMEOUT)
  68 #define SET_WITH_COUNTER(s)     ((s)->extensions & IPSET_EXT_COUNTER)
  69 #define SET_WITH_COMMENT(s)     ((s)->extensions & IPSET_EXT_COMMENT)
  70 #define SET_WITH_SKBINFO(s)     ((s)->extensions & IPSET_EXT_SKBINFO)
  71 #define SET_WITH_FORCEADD(s)    ((s)->flags & IPSET_CREATE_FLAG_FORCEADD)
  72
  73 /* Extension id, in size order */
  74 enum ip_set_ext_id {
  75         IPSET_EXT_ID_COUNTER = 0,
  76         IPSET_EXT_ID_TIMEOUT,
  77         IPSET_EXT_ID_SKBINFO,
  78         IPSET_EXT_ID_COMMENT,
  79         IPSET_EXT_ID_MAX,
  80 };
  81
  82 /* Extension type */
  83 struct ip_set_ext_type {
  84         /* Destroy extension private data (can be NULL) */
  85         void (*destroy)(void *ext);
  86         enum ip_set_extension type;
  87         enum ipset_cadt_flags flag;
  88         /* Size and minimal alignment */
  89         u8 len;
  90         u8 align;
  91 };
  92
  93 extern const struct ip_set_ext_type ip_set_extensions[];
  94
  95 struct ip_set_ext {
  96         u64 packets;
  97         u64 bytes;
  98         u32 timeout;
  99         u32 skbmark;
 100         u32 skbmarkmask;
 101         u32 skbprio;
 102         u16 skbqueue;
 103         char *comment;
 104 };
 105
 106 struct ip_set_counter {
 107         atomic64_t bytes;
 108         atomic64_t packets;
 109 };
 110
 111 struct ip_set_comment {
 112         char *str;
 113 };
 114
 115 struct ip_set_skbinfo {
 116         u32 skbmark;
 117         u32 skbmarkmask;
 118         u32 skbprio;
 119         u16 skbqueue;
 120 };
 121
 122 struct ip_set;
 123
 124 #define ext_timeout(e, s)       \
 125 (unsigned long *)(((void *)(e)) + (s)->offset[IPSET_EXT_ID_TIMEOUT])
 126 #define ext_counter(e, s)       \
 127 (struct ip_set_counter *)(((void *)(e)) + (s)->offset[IPSET_EXT_ID_COUNTER])
 128 #define ext_comment(e, s)       \
 129 (struct ip_set_comment *)(((void *)(e)) + (s)->offset[IPSET_EXT_ID_COMMENT])
 130 #define ext_skbinfo(e, s)       \
 131 (struct ip_set_skbinfo *)(((void *)(e)) + (s)->offset[IPSET_EXT_ID_SKBINFO])
 132
 133 typedef int (*ipset_adtfn)(struct ip_set *set, void *value,
 134                            const struct ip_set_ext *ext,
 135                            struct ip_set_ext *mext, u32 cmdflags);
 136
 137 /* Kernel API function options */
 138 struct ip_set_adt_opt {
 139         u8 family;              /* Actual protocol family */
 140         u8 dim;                 /* Dimension of match/target */
 141         u8 flags;               /* Direction and negation flags */
 142         u32 cmdflags;           /* Command-like flags */
 143         struct ip_set_ext ext;  /* Extensions */
 144 };
 145
 146 /* Set type, variant-specific part */
 147 struct ip_set_type_variant {
 148         /* Kernelspace: test/add/del entries
 149          *              returns negative error code,
 150          *                      zero for no match/success to add/delete
 151          *                      positive for matching element */
 152         int (*kadt)(struct ip_set *set, const struct sk_buff *skb,
 153                     const struct xt_action_param *par,
 154                     enum ipset_adt adt, struct ip_set_adt_opt *opt);
 155
 156         /* Userspace: test/add/del entries
 157          *              returns negative error code,
 158          *                      zero for no match/success to add/delete
 159          *                      positive for matching element */
 160         int (*uadt)(struct ip_set *set, struct nlattr *tb[],
 161                     enum ipset_adt adt, u32 *lineno, u32 flags, bool retried);
 162
 163         /* Low level add/del/test functions */
 164         ipset_adtfn adt[IPSET_ADT_MAX];
 165
 166         /* When adding entries and set is full, try to resize the set */
 167         int (*resize)(struct ip_set *set, bool retried);
 168         /* Destroy the set */
 169         void (*destroy)(struct ip_set *set);
 170         /* Flush the elements */
 171         void (*flush)(struct ip_set *set);
 172         /* Expire entries before listing */
 173         void (*expire)(struct ip_set *set);
 174         /* List set header data */
 175         int (*head)(struct ip_set *set, struct sk_buff *skb);
 176         /* List elements */
 177         int (*list)(const struct ip_set *set, struct sk_buff *skb,
 178                     struct netlink_callback *cb);
 179
 180         /* Return true if "b" set is the same as "a"
 181          * according to the create set parameters */
 182         bool (*same_set)(const struct ip_set *a, const struct ip_set *b);
 183 };
 184
 185 /* The core set type structure */
 186 struct ip_set_type {
 187         struct list_head list;
 188
 189         /* Typename */
 190         char name[IPSET_MAXNAMELEN];
 191         /* Protocol version */
 192         u8 protocol;
 193         /* Set type dimension */
 194         u8 dimension;
 195         /*
 196          * Supported family: may be NFPROTO_UNSPEC for both
 197          * NFPROTO_IPV4/NFPROTO_IPV6.
 198          */
 199         u8 family;
 200         /* Type revisions */
 201         u8 revision_min, revision_max;
 202         /* Set features to control swapping */
 203         u16 features;
 204
 205         /* Create set */
 206         int (*create)(struct net *net, struct ip_set *set,
 207                       struct nlattr *tb[], u32 flags);
 208
 209         /* Attribute policies */
 210         const struct nla_policy create_policy[IPSET_ATTR_CREATE_MAX + 1];
 211         const struct nla_policy adt_policy[IPSET_ATTR_ADT_MAX + 1];
 212
 213         /* Set this to THIS_MODULE if you are a module, otherwise NULL */
 214         struct module *me;
 215 };
 216
 217 /* register and unregister set type */
 218 extern int ip_set_type_register(struct ip_set_type *set_type);
 219 extern void ip_set_type_unregister(struct ip_set_type *set_type);
 220
 221 /* A generic IP set */
 222 struct ip_set {
 223         /* The name of the set */
 224         char name[IPSET_MAXNAMELEN];
 225         /* Lock protecting the set data */
 226         rwlock_t lock;
 227         /* References to the set */
 228         u32 ref;
 229         /* The core set type */
 230         struct ip_set_type *type;
 231         /* The type variant doing the real job */
 232         const struct ip_set_type_variant *variant;
 233         /* The actual INET family of the set */
 234         u8 family;
 235         /* The type revision */
 236         u8 revision;
 237         /* Extensions */
 238         u8 extensions;
 239         /* Create flags */
 240         u8 flags;
 241         /* Default timeout value, if enabled */
 242         u32 timeout;
 243         /* Element data size */
 244         size_t dsize;
 245         /* Offsets to extensions in elements */
 246         size_t offset[IPSET_EXT_ID_MAX];
 247         /* The type specific data */
 248         void *data;
 249 };
 250
 251 static inline void
 252 ip_set_ext_destroy(struct ip_set *set, void *data)
 253 {
 254         /* Check that the extension is enabled for the set and
 255          * call it's destroy function for its extension part in data.
 256          */
 257         if (SET_WITH_COMMENT(set))
 258                 ip_set_extensions[IPSET_EXT_ID_COMMENT].destroy(
 259                         ext_comment(data, set));
 260 }
 261
 262 static inline int
 263 ip_set_put_flags(struct sk_buff *skb, struct ip_set *set)
 264 {
 265         u32 cadt_flags = 0;
 266
 267         if (SET_WITH_TIMEOUT(set))
 268                 if (unlikely(nla_put_net32(skb, IPSET_ATTR_TIMEOUT,
 269                                            htonl(set->timeout))))
 270                         return -EMSGSIZE;
 271         if (SET_WITH_COUNTER(set))
 272                 cadt_flags |= IPSET_FLAG_WITH_COUNTERS;
 273         if (SET_WITH_COMMENT(set))
 274                 cadt_flags |= IPSET_FLAG_WITH_COMMENT;
 275         if (SET_WITH_SKBINFO(set))
 276                 cadt_flags |= IPSET_FLAG_WITH_SKBINFO;
 277         if (SET_WITH_FORCEADD(set))
 278                 cadt_flags |= IPSET_FLAG_WITH_FORCEADD;
 279
 280         if (!cadt_flags)
 281                 return 0;
 282         return nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(cadt_flags));
 283 }
 284
 285 static inline void
 286 ip_set_add_bytes(u64 bytes, struct ip_set_counter *counter)
 287 {
 288         atomic64_add((long long)bytes, &(counter)->bytes);
 289 }
 290
 291 static inline void
 292 ip_set_add_packets(u64 packets, struct ip_set_counter *counter)
 293 {
 294         atomic64_add((long long)packets, &(counter)->packets);
 295 }
 296
 297 static inline u64
 298 ip_set_get_bytes(const struct ip_set_counter *counter)
 299 {
 300         return (u64)atomic64_read(&(counter)->bytes);
 301 }
 302
 303 static inline u64
 304 ip_set_get_packets(const struct ip_set_counter *counter)
 305 {
 306         return (u64)atomic64_read(&(counter)->packets);
 307 }
 308
 309 static inline void
 310 ip_set_update_counter(struct ip_set_counter *counter,
 311                       const struct ip_set_ext *ext,
 312                       struct ip_set_ext *mext, u32 flags)
 313 {
 314         if (ext->packets != ULLONG_MAX &&
 315             !(flags & IPSET_FLAG_SKIP_COUNTER_UPDATE)) {
 316                 ip_set_add_bytes(ext->bytes, counter);
 317                 ip_set_add_packets(ext->packets, counter);
 318         }
 319         if (flags & IPSET_FLAG_MATCH_COUNTERS) {
 320                 mext->packets = ip_set_get_packets(counter);
 321                 mext->bytes = ip_set_get_bytes(counter);
 322         }
 323 }
 324
 325 static inline void
 326 ip_set_get_skbinfo(struct ip_set_skbinfo *skbinfo,
 327                       const struct ip_set_ext *ext,
 328                       struct ip_set_ext *mext, u32 flags)
 329 {
 330                 mext->skbmark = skbinfo->skbmark;
 331                 mext->skbmarkmask = skbinfo->skbmarkmask;
 332                 mext->skbprio = skbinfo->skbprio;
 333                 mext->skbqueue = skbinfo->skbqueue;
 334 }
 335 static inline bool
 336 ip_set_put_skbinfo(struct sk_buff *skb, struct ip_set_skbinfo *skbinfo)
 337 {
 338         /* Send nonzero parameters only */
 339         return ((skbinfo->skbmark || skbinfo->skbmarkmask) &&
 340                 nla_put_net64(skb, IPSET_ATTR_SKBMARK,
 341                               cpu_to_be64((u64)skbinfo->skbmark << 32 |
 342                                           skbinfo->skbmarkmask))) ||
 343                (skbinfo->skbprio &&
 344                 nla_put_net32(skb, IPSET_ATTR_SKBPRIO,
 345                               cpu_to_be32(skbinfo->skbprio))) ||
 346                (skbinfo->skbqueue &&
 347                 nla_put_net16(skb, IPSET_ATTR_SKBQUEUE,
 348                              cpu_to_be16(skbinfo->skbqueue)));
 349
 350 }
 351
 352 static inline void
 353 ip_set_init_skbinfo(struct ip_set_skbinfo *skbinfo,
 354                     const struct ip_set_ext *ext)
 355 {
 356         skbinfo->skbmark = ext->skbmark;
 357         skbinfo->skbmarkmask = ext->skbmarkmask;
 358         skbinfo->skbprio = ext->skbprio;
 359         skbinfo->skbqueue = ext->skbqueue;
 360 }
 361
 362 static inline bool
 363 ip_set_put_counter(struct sk_buff *skb, struct ip_set_counter *counter)
 364 {
 365         return nla_put_net64(skb, IPSET_ATTR_BYTES,
 366                              cpu_to_be64(ip_set_get_bytes(counter))) ||
 367                nla_put_net64(skb, IPSET_ATTR_PACKETS,
 368                              cpu_to_be64(ip_set_get_packets(counter)));
 369 }
 370
 371 static inline void
 372 ip_set_init_counter(struct ip_set_counter *counter,
 373                     const struct ip_set_ext *ext)
 374 {
 375         if (ext->bytes != ULLONG_MAX)
 376                 atomic64_set(&(counter)->bytes, (long long)(ext->bytes));
 377         if (ext->packets != ULLONG_MAX)
 378                 atomic64_set(&(counter)->packets, (long long)(ext->packets));
 379 }
 380
 381 /* Netlink CB args */
 382 enum {
 383         IPSET_CB_NET = 0,
 384         IPSET_CB_DUMP,
 385         IPSET_CB_INDEX,
 386         IPSET_CB_ARG0,
 387         IPSET_CB_ARG1,
 388         IPSET_CB_ARG2,
 389 };
 390
 391 /* register and unregister set references */
 392 extern ip_set_id_t ip_set_get_byname(struct net *net,
 393                                      const char *name, struct ip_set **set);
 394 extern void ip_set_put_byindex(struct net *net, ip_set_id_t index);
 395 extern const char *ip_set_name_byindex(struct net *net, ip_set_id_t index);
 396 extern ip_set_id_t ip_set_nfnl_get_byindex(struct net *net, ip_set_id_t index);
 397 extern void ip_set_nfnl_put(struct net *net, ip_set_id_t index);
 398
 399 /* API for iptables set match, and SET target */
 400
 401 extern int ip_set_add(ip_set_id_t id, const struct sk_buff *skb,
 402                       const struct xt_action_param *par,
 403                       struct ip_set_adt_opt *opt);
 404 extern int ip_set_del(ip_set_id_t id, const struct sk_buff *skb,
 405                       const struct xt_action_param *par,
 406                       struct ip_set_adt_opt *opt);
 407 extern int ip_set_test(ip_set_id_t id, const struct sk_buff *skb,
 408                        const struct xt_action_param *par,
 409                        struct ip_set_adt_opt *opt);
 410
 411 /* Utility functions */
 412 extern void *ip_set_alloc(size_t size);
 413 extern void ip_set_free(void *members);
 414 extern int ip_set_get_ipaddr4(struct nlattr *nla,  __be32 *ipaddr);
 415 extern int ip_set_get_ipaddr6(struct nlattr *nla, union nf_inet_addr *ipaddr);
 416 extern size_t ip_set_elem_len(struct ip_set *set, struct nlattr *tb[],
 417                               size_t len);
 418 extern int ip_set_get_extensions(struct ip_set *set, struct nlattr *tb[],
 419                                  struct ip_set_ext *ext);
 420
 421 static inline int
 422 ip_set_get_hostipaddr4(struct nlattr *nla, u32 *ipaddr)
 423 {
 424         __be32 ip;
 425         int ret = ip_set_get_ipaddr4(nla, &ip);
 426
 427         if (ret)
 428                 return ret;
 429         *ipaddr = ntohl(ip);
 430         return 0;
 431 }
 432
 433 /* Ignore IPSET_ERR_EXIST errors if asked to do so? */
 434 static inline bool
 435 ip_set_eexist(int ret, u32 flags)
 436 {
 437         return ret == -IPSET_ERR_EXIST && (flags & IPSET_FLAG_EXIST);
 438 }
 439
 440 /* Match elements marked with nomatch */
 441 static inline bool
 442 ip_set_enomatch(int ret, u32 flags, enum ipset_adt adt, struct ip_set *set)
 443 {
 444         return adt == IPSET_TEST &&
 445                (set->type->features & IPSET_TYPE_NOMATCH) &&
 446                ((flags >> 16) & IPSET_FLAG_NOMATCH) &&
 447                (ret > 0 || ret == -ENOTEMPTY);
 448 }
 449
 450 /* Check the NLA_F_NET_BYTEORDER flag */
 451 static inline bool
 452 ip_set_attr_netorder(struct nlattr *tb[], int type)
 453 {
 454         return tb[type] && (tb[type]->nla_type & NLA_F_NET_BYTEORDER);
 455 }
 456
 457 static inline bool
 458 ip_set_optattr_netorder(struct nlattr *tb[], int type)
 459 {
 460         return !tb[type] || (tb[type]->nla_type & NLA_F_NET_BYTEORDER);
 461 }
 462
 463 /* Useful converters */
 464 static inline u32
 465 ip_set_get_h32(const struct nlattr *attr)
 466 {
 467         return ntohl(nla_get_be32(attr));
 468 }
 469
 470 static inline u16
 471 ip_set_get_h16(const struct nlattr *attr)
 472 {
 473         return ntohs(nla_get_be16(attr));
 474 }
 475
 476 #define ipset_nest_start(skb, attr) nla_nest_start(skb, attr | NLA_F_NESTED)
 477 #define ipset_nest_end(skb, start)  nla_nest_end(skb, start)
 478
 479 static inline int nla_put_ipaddr4(struct sk_buff *skb, int type, __be32 ipaddr)
 480 {
 481         struct nlattr *__nested = ipset_nest_start(skb, type);
 482         int ret;
 483
 484         if (!__nested)
 485                 return -EMSGSIZE;
 486         ret = nla_put_net32(skb, IPSET_ATTR_IPADDR_IPV4, ipaddr);
 487         if (!ret)
 488                 ipset_nest_end(skb, __nested);
 489         return ret;
 490 }
 491
 492 static inline int nla_put_ipaddr6(struct sk_buff *skb, int type,
 493                                   const struct in6_addr *ipaddrptr)
 494 {
 495         struct nlattr *__nested = ipset_nest_start(skb, type);
 496         int ret;
 497
 498         if (!__nested)
 499                 return -EMSGSIZE;
 500         ret = nla_put(skb, IPSET_ATTR_IPADDR_IPV6,
 501                       sizeof(struct in6_addr), ipaddrptr);
 502         if (!ret)
 503                 ipset_nest_end(skb, __nested);
 504         return ret;
 505 }
 506
 507 /* Get address from skbuff */
 508 static inline __be32
 509 ip4addr(const struct sk_buff *skb, bool src)
 510 {
 511         return src ? ip_hdr(skb)->saddr : ip_hdr(skb)->daddr;
 512 }
 513
 514 static inline void
 515 ip4addrptr(const struct sk_buff *skb, bool src, __be32 *addr)
 516 {
 517         *addr = src ? ip_hdr(skb)->saddr : ip_hdr(skb)->daddr;
 518 }
 519
 520 static inline void
 521 ip6addrptr(const struct sk_buff *skb, bool src, struct in6_addr *addr)
 522 {
 523         memcpy(addr, src ? &ipv6_hdr(skb)->saddr : &ipv6_hdr(skb)->daddr,
 524                sizeof(*addr));
 525 }
 526
 527 /* Calculate the bytes required to store the inclusive range of a-b */
 528 static inline int
 529 bitmap_bytes(u32 a, u32 b)
 530 {
 531         return 4 * ((((b - a + 8) / 8) + 3) / 4);
 532 }
 533
 534 #include <linux/netfilter/ipset/ip_set_timeout.h>
 535 #include <linux/netfilter/ipset/ip_set_comment.h>
 536
 537 static inline int
 538 ip_set_put_extensions(struct sk_buff *skb, const struct ip_set *set,
 539                       const void *e, bool active)
 540 {
 541         if (SET_WITH_TIMEOUT(set)) {
 542                 unsigned long *timeout = ext_timeout(e, set);
 543
 544                 if (nla_put_net32(skb, IPSET_ATTR_TIMEOUT,
 545                         htonl(active ? ip_set_timeout_get(timeout)
 546                                 : *timeout)))
 547                         return -EMSGSIZE;
 548         }
 549         if (SET_WITH_COUNTER(set) &&
 550             ip_set_put_counter(skb, ext_counter(e, set)))
 551                 return -EMSGSIZE;
 552         if (SET_WITH_COMMENT(set) &&
 553             ip_set_put_comment(skb, ext_comment(e, set)))
 554                 return -EMSGSIZE;
 555         if (SET_WITH_SKBINFO(set) &&
 556             ip_set_put_skbinfo(skb, ext_skbinfo(e, set)))
 557                 return -EMSGSIZE;
 558         return 0;
 559 }
 560
 561 #define IP_SET_INIT_KEXT(skb, opt, set)                 \
 562         { .bytes = (skb)->len, .packets = 1,            \
 563           .timeout = ip_set_adt_opt_timeout(opt, set) }
 564
 565 #define IP_SET_INIT_UEXT(set)                           \
 566         { .bytes = ULLONG_MAX, .packets = ULLONG_MAX,   \
 567           .timeout = (set)->timeout }
 568
 569 #define IP_SET_INIT_CIDR(a, b) ((a) ? (a) : (b))
 570
 571 #define IPSET_CONCAT(a, b)              a##b
 572 #define IPSET_TOKEN(a, b)               IPSET_CONCAT(a, b)
 573
 574 #endif /*_IP_SET_H */