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
ip_set_ext_destroy(struct ip_set * set,void * data)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
ip_set_put_flags(struct sk_buff * skb,struct ip_set * set)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
ip_set_add_bytes(u64 bytes,struct ip_set_counter * counter)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
ip_set_add_packets(u64 packets,struct ip_set_counter * counter)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
ip_set_get_bytes(const struct ip_set_counter * counter)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
ip_set_get_packets(const struct ip_set_counter * counter)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
ip_set_update_counter(struct ip_set_counter * counter,const struct ip_set_ext * ext,struct ip_set_ext * mext,u32 flags)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
ip_set_get_skbinfo(struct ip_set_skbinfo * skbinfo,const struct ip_set_ext * ext,struct ip_set_ext * mext,u32 flags)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
ip_set_put_skbinfo(struct sk_buff * skb,struct ip_set_skbinfo * skbinfo)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
ip_set_init_skbinfo(struct ip_set_skbinfo * skbinfo,const struct ip_set_ext * ext)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
ip_set_put_counter(struct sk_buff * skb,struct ip_set_counter * counter)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
ip_set_init_counter(struct ip_set_counter * counter,const struct ip_set_ext * ext)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
ip_set_get_hostipaddr4(struct nlattr * nla,u32 * ipaddr)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
ip_set_eexist(int ret,u32 flags)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
ip_set_enomatch(int ret,u32 flags,enum ipset_adt adt,struct ip_set * set)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
ip_set_attr_netorder(struct nlattr * tb[],int type)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
ip_set_optattr_netorder(struct nlattr * tb[],int type)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
ip_set_get_h32(const struct nlattr * attr)465 ip_set_get_h32(const struct nlattr *attr)
466 {
467 return ntohl(nla_get_be32(attr));
468 }
469
470 static inline u16
ip_set_get_h16(const struct nlattr * attr)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
nla_put_ipaddr4(struct sk_buff * skb,int type,__be32 ipaddr)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_in_addr(skb, IPSET_ATTR_IPADDR_IPV4, ipaddr);
487 if (!ret)
488 ipset_nest_end(skb, __nested);
489 return ret;
490 }
491
nla_put_ipaddr6(struct sk_buff * skb,int type,const struct in6_addr * ipaddrptr)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_in6_addr(skb, IPSET_ATTR_IPADDR_IPV6, ipaddrptr);
501 if (!ret)
502 ipset_nest_end(skb, __nested);
503 return ret;
504 }
505
506 /* Get address from skbuff */
507 static inline __be32
ip4addr(const struct sk_buff * skb,bool src)508 ip4addr(const struct sk_buff *skb, bool src)
509 {
510 return src ? ip_hdr(skb)->saddr : ip_hdr(skb)->daddr;
511 }
512
513 static inline void
ip4addrptr(const struct sk_buff * skb,bool src,__be32 * addr)514 ip4addrptr(const struct sk_buff *skb, bool src, __be32 *addr)
515 {
516 *addr = src ? ip_hdr(skb)->saddr : ip_hdr(skb)->daddr;
517 }
518
519 static inline void
ip6addrptr(const struct sk_buff * skb,bool src,struct in6_addr * addr)520 ip6addrptr(const struct sk_buff *skb, bool src, struct in6_addr *addr)
521 {
522 memcpy(addr, src ? &ipv6_hdr(skb)->saddr : &ipv6_hdr(skb)->daddr,
523 sizeof(*addr));
524 }
525
526 /* Calculate the bytes required to store the inclusive range of a-b */
527 static inline int
bitmap_bytes(u32 a,u32 b)528 bitmap_bytes(u32 a, u32 b)
529 {
530 return 4 * ((((b - a + 8) / 8) + 3) / 4);
531 }
532
533 #include <linux/netfilter/ipset/ip_set_timeout.h>
534 #include <linux/netfilter/ipset/ip_set_comment.h>
535
536 static inline int
ip_set_put_extensions(struct sk_buff * skb,const struct ip_set * set,const void * e,bool active)537 ip_set_put_extensions(struct sk_buff *skb, const struct ip_set *set,
538 const void *e, bool active)
539 {
540 if (SET_WITH_TIMEOUT(set)) {
541 unsigned long *timeout = ext_timeout(e, set);
542
543 if (nla_put_net32(skb, IPSET_ATTR_TIMEOUT,
544 htonl(active ? ip_set_timeout_get(timeout)
545 : *timeout)))
546 return -EMSGSIZE;
547 }
548 if (SET_WITH_COUNTER(set) &&
549 ip_set_put_counter(skb, ext_counter(e, set)))
550 return -EMSGSIZE;
551 if (SET_WITH_COMMENT(set) &&
552 ip_set_put_comment(skb, ext_comment(e, set)))
553 return -EMSGSIZE;
554 if (SET_WITH_SKBINFO(set) &&
555 ip_set_put_skbinfo(skb, ext_skbinfo(e, set)))
556 return -EMSGSIZE;
557 return 0;
558 }
559
560 #define IP_SET_INIT_KEXT(skb, opt, set) \
561 { .bytes = (skb)->len, .packets = 1, \
562 .timeout = ip_set_adt_opt_timeout(opt, set) }
563
564 #define IP_SET_INIT_UEXT(set) \
565 { .bytes = ULLONG_MAX, .packets = ULLONG_MAX, \
566 .timeout = (set)->timeout }
567
568 #define IP_SET_INIT_CIDR(a, b) ((a) ? (a) : (b))
569
570 #define IPSET_CONCAT(a, b) a##b
571 #define IPSET_TOKEN(a, b) IPSET_CONCAT(a, b)
572
573 #endif /*_IP_SET_H */
574