1/* Copyright (C) 2003-2013 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_getport.h>
25#include <linux/netfilter/ipset/ip_set_hash.h>
26
27#define IPSET_TYPE_REV_MIN	0
28/*				1    SCTP and UDPLITE support added */
29/*				2    Range as input support for IPv4 added */
30/*				3    nomatch flag support added */
31/*				4    Counters support added */
32/*				5    Comments support added */
33/*				6    Forceadd support added */
34#define IPSET_TYPE_REV_MAX	7 /* skbinfo support added */
35
36MODULE_LICENSE("GPL");
37MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
38IP_SET_MODULE_DESC("hash:ip,port,net", IPSET_TYPE_REV_MIN, IPSET_TYPE_REV_MAX);
39MODULE_ALIAS("ip_set_hash:ip,port,net");
40
41/* Type specific function prefix */
42#define HTYPE		hash_ipportnet
43
44/* We squeeze the "nomatch" flag into cidr: we don't support cidr == 0
45 * However this way we have to store internally cidr - 1,
46 * dancing back and forth.
47 */
48#define IP_SET_HASH_WITH_NETS_PACKED
49#define IP_SET_HASH_WITH_PROTO
50#define IP_SET_HASH_WITH_NETS
51
52/* IPv4 variant */
53
54/* Member elements */
55struct hash_ipportnet4_elem {
56	__be32 ip;
57	__be32 ip2;
58	__be16 port;
59	u8 cidr:7;
60	u8 nomatch:1;
61	u8 proto;
62};
63
64/* Common functions */
65
66static inline bool
67hash_ipportnet4_data_equal(const struct hash_ipportnet4_elem *ip1,
68			   const struct hash_ipportnet4_elem *ip2,
69			   u32 *multi)
70{
71	return ip1->ip == ip2->ip &&
72	       ip1->ip2 == ip2->ip2 &&
73	       ip1->cidr == ip2->cidr &&
74	       ip1->port == ip2->port &&
75	       ip1->proto == ip2->proto;
76}
77
78static inline int
79hash_ipportnet4_do_data_match(const struct hash_ipportnet4_elem *elem)
80{
81	return elem->nomatch ? -ENOTEMPTY : 1;
82}
83
84static inline void
85hash_ipportnet4_data_set_flags(struct hash_ipportnet4_elem *elem, u32 flags)
86{
87	elem->nomatch = !!((flags >> 16) & IPSET_FLAG_NOMATCH);
88}
89
90static inline void
91hash_ipportnet4_data_reset_flags(struct hash_ipportnet4_elem *elem, u8 *flags)
92{
93	swap(*flags, elem->nomatch);
94}
95
96static inline void
97hash_ipportnet4_data_netmask(struct hash_ipportnet4_elem *elem, u8 cidr)
98{
99	elem->ip2 &= ip_set_netmask(cidr);
100	elem->cidr = cidr - 1;
101}
102
103static bool
104hash_ipportnet4_data_list(struct sk_buff *skb,
105			  const struct hash_ipportnet4_elem *data)
106{
107	u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;
108
109	if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, data->ip) ||
110	    nla_put_ipaddr4(skb, IPSET_ATTR_IP2, data->ip2) ||
111	    nla_put_net16(skb, IPSET_ATTR_PORT, data->port) ||
112	    nla_put_u8(skb, IPSET_ATTR_CIDR2, data->cidr + 1) ||
113	    nla_put_u8(skb, IPSET_ATTR_PROTO, data->proto) ||
114	    (flags &&
115	     nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags))))
116		goto nla_put_failure;
117	return 0;
118
119nla_put_failure:
120	return 1;
121}
122
123static inline void
124hash_ipportnet4_data_next(struct hash_ipportnet4_elem *next,
125			  const struct hash_ipportnet4_elem *d)
126{
127	next->ip = d->ip;
128	next->port = d->port;
129	next->ip2 = d->ip2;
130}
131
132#define MTYPE		hash_ipportnet4
133#define PF		4
134#define HOST_MASK	32
135#include "ip_set_hash_gen.h"
136
137static int
138hash_ipportnet4_kadt(struct ip_set *set, const struct sk_buff *skb,
139		     const struct xt_action_param *par,
140		     enum ipset_adt adt, struct ip_set_adt_opt *opt)
141{
142	const struct hash_ipportnet *h = set->data;
143	ipset_adtfn adtfn = set->variant->adt[adt];
144	struct hash_ipportnet4_elem e = {
145		.cidr = IP_SET_INIT_CIDR(h->nets[0].cidr[0], HOST_MASK) - 1,
146	};
147	struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
148
149	if (adt == IPSET_TEST)
150		e.cidr = HOST_MASK - 1;
151
152	if (!ip_set_get_ip4_port(skb, opt->flags & IPSET_DIM_TWO_SRC,
153				 &e.port, &e.proto))
154		return -EINVAL;
155
156	ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip);
157	ip4addrptr(skb, opt->flags & IPSET_DIM_THREE_SRC, &e.ip2);
158	e.ip2 &= ip_set_netmask(e.cidr + 1);
159
160	return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
161}
162
163static int
164hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
165		     enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
166{
167	const struct hash_ipportnet *h = set->data;
168	ipset_adtfn adtfn = set->variant->adt[adt];
169	struct hash_ipportnet4_elem e = { .cidr = HOST_MASK - 1 };
170	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
171	u32 ip = 0, ip_to = 0, p = 0, port, port_to;
172	u32 ip2_from = 0, ip2_to = 0, ip2_last, ip2;
173	bool with_ports = false;
174	u8 cidr;
175	int ret;
176
177	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
178		     !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
179		     !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
180		     !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) ||
181		     !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS) ||
182		     !ip_set_optattr_netorder(tb, IPSET_ATTR_PACKETS) ||
183		     !ip_set_optattr_netorder(tb, IPSET_ATTR_BYTES) ||
184		     !ip_set_optattr_netorder(tb, IPSET_ATTR_SKBMARK) ||
185		     !ip_set_optattr_netorder(tb, IPSET_ATTR_SKBPRIO) ||
186		     !ip_set_optattr_netorder(tb, IPSET_ATTR_SKBQUEUE)))
187		return -IPSET_ERR_PROTOCOL;
188
189	if (tb[IPSET_ATTR_LINENO])
190		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
191
192	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip) ||
193	      ip_set_get_extensions(set, tb, &ext);
194	if (ret)
195		return ret;
196
197	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2], &ip2_from);
198	if (ret)
199		return ret;
200
201	if (tb[IPSET_ATTR_CIDR2]) {
202		cidr = nla_get_u8(tb[IPSET_ATTR_CIDR2]);
203		if (!cidr || cidr > HOST_MASK)
204			return -IPSET_ERR_INVALID_CIDR;
205		e.cidr = cidr - 1;
206	}
207
208	if (tb[IPSET_ATTR_PORT])
209		e.port = nla_get_be16(tb[IPSET_ATTR_PORT]);
210	else
211		return -IPSET_ERR_PROTOCOL;
212
213	if (tb[IPSET_ATTR_PROTO]) {
214		e.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
215		with_ports = ip_set_proto_with_ports(e.proto);
216
217		if (e.proto == 0)
218			return -IPSET_ERR_INVALID_PROTO;
219	} else
220		return -IPSET_ERR_MISSING_PROTO;
221
222	if (!(with_ports || e.proto == IPPROTO_ICMP))
223		e.port = 0;
224
225	if (tb[IPSET_ATTR_CADT_FLAGS]) {
226		u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
227		if (cadt_flags & IPSET_FLAG_NOMATCH)
228			flags |= (IPSET_FLAG_NOMATCH << 16);
229	}
230
231	with_ports = with_ports && tb[IPSET_ATTR_PORT_TO];
232	if (adt == IPSET_TEST ||
233	    !(tb[IPSET_ATTR_CIDR] || tb[IPSET_ATTR_IP_TO] || with_ports ||
234	      tb[IPSET_ATTR_IP2_TO])) {
235		e.ip = htonl(ip);
236		e.ip2 = htonl(ip2_from & ip_set_hostmask(e.cidr + 1));
237		ret = adtfn(set, &e, &ext, &ext, flags);
238		return ip_set_enomatch(ret, flags, adt, set) ? -ret :
239		       ip_set_eexist(ret, flags) ? 0 : ret;
240	}
241
242	ip_to = ip;
243	if (tb[IPSET_ATTR_IP_TO]) {
244		ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
245		if (ret)
246			return ret;
247		if (ip > ip_to)
248			swap(ip, ip_to);
249	} else if (tb[IPSET_ATTR_CIDR]) {
250		cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
251
252		if (!cidr || cidr > 32)
253			return -IPSET_ERR_INVALID_CIDR;
254		ip_set_mask_from_to(ip, ip_to, cidr);
255	}
256
257	port_to = port = ntohs(e.port);
258	if (tb[IPSET_ATTR_PORT_TO]) {
259		port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
260		if (port > port_to)
261			swap(port, port_to);
262	}
263
264	ip2_to = ip2_from;
265	if (tb[IPSET_ATTR_IP2_TO]) {
266		ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2_TO], &ip2_to);
267		if (ret)
268			return ret;
269		if (ip2_from > ip2_to)
270			swap(ip2_from, ip2_to);
271		if (ip2_from + UINT_MAX == ip2_to)
272			return -IPSET_ERR_HASH_RANGE;
273	} else
274		ip_set_mask_from_to(ip2_from, ip2_to, e.cidr + 1);
275
276	if (retried)
277		ip = ntohl(h->next.ip);
278	for (; !before(ip_to, ip); ip++) {
279		e.ip = htonl(ip);
280		p = retried && ip == ntohl(h->next.ip) ? ntohs(h->next.port)
281						       : port;
282		for (; p <= port_to; p++) {
283			e.port = htons(p);
284			ip2 = retried &&
285			      ip == ntohl(h->next.ip) &&
286			      p == ntohs(h->next.port)
287				? ntohl(h->next.ip2) : ip2_from;
288			while (!after(ip2, ip2_to)) {
289				e.ip2 = htonl(ip2);
290				ip2_last = ip_set_range_to_cidr(ip2, ip2_to,
291								&cidr);
292				e.cidr = cidr - 1;
293				ret = adtfn(set, &e, &ext, &ext, flags);
294
295				if (ret && !ip_set_eexist(ret, flags))
296					return ret;
297				else
298					ret = 0;
299				ip2 = ip2_last + 1;
300			}
301		}
302	}
303	return ret;
304}
305
306/* IPv6 variant */
307
308struct hash_ipportnet6_elem {
309	union nf_inet_addr ip;
310	union nf_inet_addr ip2;
311	__be16 port;
312	u8 cidr:7;
313	u8 nomatch:1;
314	u8 proto;
315};
316
317/* Common functions */
318
319static inline bool
320hash_ipportnet6_data_equal(const struct hash_ipportnet6_elem *ip1,
321			   const struct hash_ipportnet6_elem *ip2,
322			   u32 *multi)
323{
324	return ipv6_addr_equal(&ip1->ip.in6, &ip2->ip.in6) &&
325	       ipv6_addr_equal(&ip1->ip2.in6, &ip2->ip2.in6) &&
326	       ip1->cidr == ip2->cidr &&
327	       ip1->port == ip2->port &&
328	       ip1->proto == ip2->proto;
329}
330
331static inline int
332hash_ipportnet6_do_data_match(const struct hash_ipportnet6_elem *elem)
333{
334	return elem->nomatch ? -ENOTEMPTY : 1;
335}
336
337static inline void
338hash_ipportnet6_data_set_flags(struct hash_ipportnet6_elem *elem, u32 flags)
339{
340	elem->nomatch = !!((flags >> 16) & IPSET_FLAG_NOMATCH);
341}
342
343static inline void
344hash_ipportnet6_data_reset_flags(struct hash_ipportnet6_elem *elem, u8 *flags)
345{
346	swap(*flags, elem->nomatch);
347}
348
349static inline void
350hash_ipportnet6_data_netmask(struct hash_ipportnet6_elem *elem, u8 cidr)
351{
352	ip6_netmask(&elem->ip2, cidr);
353	elem->cidr = cidr - 1;
354}
355
356static bool
357hash_ipportnet6_data_list(struct sk_buff *skb,
358			  const struct hash_ipportnet6_elem *data)
359{
360	u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;
361
362	if (nla_put_ipaddr6(skb, IPSET_ATTR_IP, &data->ip.in6) ||
363	    nla_put_ipaddr6(skb, IPSET_ATTR_IP2, &data->ip2.in6) ||
364	    nla_put_net16(skb, IPSET_ATTR_PORT, data->port) ||
365	    nla_put_u8(skb, IPSET_ATTR_CIDR2, data->cidr + 1) ||
366	    nla_put_u8(skb, IPSET_ATTR_PROTO, data->proto) ||
367	    (flags &&
368	     nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags))))
369		goto nla_put_failure;
370	return 0;
371
372nla_put_failure:
373	return 1;
374}
375
376static inline void
377hash_ipportnet6_data_next(struct hash_ipportnet4_elem *next,
378			  const struct hash_ipportnet6_elem *d)
379{
380	next->port = d->port;
381}
382
383#undef MTYPE
384#undef PF
385#undef HOST_MASK
386
387#define MTYPE		hash_ipportnet6
388#define PF		6
389#define HOST_MASK	128
390#define IP_SET_EMIT_CREATE
391#include "ip_set_hash_gen.h"
392
393static int
394hash_ipportnet6_kadt(struct ip_set *set, const struct sk_buff *skb,
395		     const struct xt_action_param *par,
396		     enum ipset_adt adt, struct ip_set_adt_opt *opt)
397{
398	const struct hash_ipportnet *h = set->data;
399	ipset_adtfn adtfn = set->variant->adt[adt];
400	struct hash_ipportnet6_elem e = {
401		.cidr = IP_SET_INIT_CIDR(h->nets[0].cidr[0], HOST_MASK) - 1,
402	};
403	struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
404
405	if (adt == IPSET_TEST)
406		e.cidr = HOST_MASK - 1;
407
408	if (!ip_set_get_ip6_port(skb, opt->flags & IPSET_DIM_TWO_SRC,
409				 &e.port, &e.proto))
410		return -EINVAL;
411
412	ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip.in6);
413	ip6addrptr(skb, opt->flags & IPSET_DIM_THREE_SRC, &e.ip2.in6);
414	ip6_netmask(&e.ip2, e.cidr + 1);
415
416	return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
417}
418
419static int
420hash_ipportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
421		     enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
422{
423	const struct hash_ipportnet *h = set->data;
424	ipset_adtfn adtfn = set->variant->adt[adt];
425	struct hash_ipportnet6_elem e = { .cidr = HOST_MASK - 1 };
426	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
427	u32 port, port_to;
428	bool with_ports = false;
429	u8 cidr;
430	int ret;
431
432	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
433		     !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
434		     !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
435		     !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) ||
436		     !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS) ||
437		     !ip_set_optattr_netorder(tb, IPSET_ATTR_PACKETS) ||
438		     !ip_set_optattr_netorder(tb, IPSET_ATTR_BYTES) ||
439		     !ip_set_optattr_netorder(tb, IPSET_ATTR_SKBMARK) ||
440		     !ip_set_optattr_netorder(tb, IPSET_ATTR_SKBPRIO) ||
441		     !ip_set_optattr_netorder(tb, IPSET_ATTR_SKBQUEUE) ||
442		     tb[IPSET_ATTR_IP_TO] ||
443		     tb[IPSET_ATTR_CIDR]))
444		return -IPSET_ERR_PROTOCOL;
445	if (unlikely(tb[IPSET_ATTR_IP_TO]))
446		return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;
447
448	if (tb[IPSET_ATTR_LINENO])
449		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
450
451	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip) ||
452	      ip_set_get_extensions(set, tb, &ext);
453	if (ret)
454		return ret;
455
456	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP2], &e.ip2);
457	if (ret)
458		return ret;
459
460	if (tb[IPSET_ATTR_CIDR2]) {
461		cidr = nla_get_u8(tb[IPSET_ATTR_CIDR2]);
462		if (!cidr || cidr > HOST_MASK)
463			return -IPSET_ERR_INVALID_CIDR;
464		e.cidr = cidr - 1;
465	}
466
467	ip6_netmask(&e.ip2, e.cidr + 1);
468
469	if (tb[IPSET_ATTR_PORT])
470		e.port = nla_get_be16(tb[IPSET_ATTR_PORT]);
471	else
472		return -IPSET_ERR_PROTOCOL;
473
474	if (tb[IPSET_ATTR_PROTO]) {
475		e.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
476		with_ports = ip_set_proto_with_ports(e.proto);
477
478		if (e.proto == 0)
479			return -IPSET_ERR_INVALID_PROTO;
480	} else
481		return -IPSET_ERR_MISSING_PROTO;
482
483	if (!(with_ports || e.proto == IPPROTO_ICMPV6))
484		e.port = 0;
485
486	if (tb[IPSET_ATTR_CADT_FLAGS]) {
487		u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
488		if (cadt_flags & IPSET_FLAG_NOMATCH)
489			flags |= (IPSET_FLAG_NOMATCH << 16);
490	}
491
492	if (adt == IPSET_TEST || !with_ports || !tb[IPSET_ATTR_PORT_TO]) {
493		ret = adtfn(set, &e, &ext, &ext, flags);
494		return ip_set_enomatch(ret, flags, adt, set) ? -ret :
495		       ip_set_eexist(ret, flags) ? 0 : ret;
496	}
497
498	port = ntohs(e.port);
499	port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
500	if (port > port_to)
501		swap(port, port_to);
502
503	if (retried)
504		port = ntohs(h->next.port);
505	for (; port <= port_to; port++) {
506		e.port = htons(port);
507		ret = adtfn(set, &e, &ext, &ext, flags);
508
509		if (ret && !ip_set_eexist(ret, flags))
510			return ret;
511		else
512			ret = 0;
513	}
514	return ret;
515}
516
517static struct ip_set_type hash_ipportnet_type __read_mostly = {
518	.name		= "hash:ip,port,net",
519	.protocol	= IPSET_PROTOCOL,
520	.features	= IPSET_TYPE_IP | IPSET_TYPE_PORT | IPSET_TYPE_IP2 |
521			  IPSET_TYPE_NOMATCH,
522	.dimension	= IPSET_DIM_THREE,
523	.family		= NFPROTO_UNSPEC,
524	.revision_min	= IPSET_TYPE_REV_MIN,
525	.revision_max	= IPSET_TYPE_REV_MAX,
526	.create		= hash_ipportnet_create,
527	.create_policy	= {
528		[IPSET_ATTR_HASHSIZE]	= { .type = NLA_U32 },
529		[IPSET_ATTR_MAXELEM]	= { .type = NLA_U32 },
530		[IPSET_ATTR_PROBES]	= { .type = NLA_U8 },
531		[IPSET_ATTR_RESIZE]	= { .type = NLA_U8  },
532		[IPSET_ATTR_TIMEOUT]	= { .type = NLA_U32 },
533		[IPSET_ATTR_CADT_FLAGS]	= { .type = NLA_U32 },
534	},
535	.adt_policy	= {
536		[IPSET_ATTR_IP]		= { .type = NLA_NESTED },
537		[IPSET_ATTR_IP_TO]	= { .type = NLA_NESTED },
538		[IPSET_ATTR_IP2]	= { .type = NLA_NESTED },
539		[IPSET_ATTR_IP2_TO]	= { .type = NLA_NESTED },
540		[IPSET_ATTR_PORT]	= { .type = NLA_U16 },
541		[IPSET_ATTR_PORT_TO]	= { .type = NLA_U16 },
542		[IPSET_ATTR_CIDR]	= { .type = NLA_U8 },
543		[IPSET_ATTR_CIDR2]	= { .type = NLA_U8 },
544		[IPSET_ATTR_PROTO]	= { .type = NLA_U8 },
545		[IPSET_ATTR_CADT_FLAGS]	= { .type = NLA_U32 },
546		[IPSET_ATTR_TIMEOUT]	= { .type = NLA_U32 },
547		[IPSET_ATTR_LINENO]	= { .type = NLA_U32 },
548		[IPSET_ATTR_BYTES]	= { .type = NLA_U64 },
549		[IPSET_ATTR_PACKETS]	= { .type = NLA_U64 },
550		[IPSET_ATTR_COMMENT]	= { .type = NLA_NUL_STRING },
551		[IPSET_ATTR_SKBMARK]	= { .type = NLA_U64 },
552		[IPSET_ATTR_SKBPRIO]	= { .type = NLA_U32 },
553		[IPSET_ATTR_SKBQUEUE]	= { .type = NLA_U16 },
554	},
555	.me		= THIS_MODULE,
556};
557
558static int __init
559hash_ipportnet_init(void)
560{
561	return ip_set_type_register(&hash_ipportnet_type);
562}
563
564static void __exit
565hash_ipportnet_fini(void)
566{
567	ip_set_type_unregister(&hash_ipportnet_type);
568}
569
570module_init(hash_ipportnet_init);
571module_exit(hash_ipportnet_fini);
572