1
2
3
4
5
6#include <linux/jhash.h>
7#include <linux/module.h>
8#include <linux/ip.h>
9#include <linux/skbuff.h>
10#include <linux/errno.h>
11#include <linux/random.h>
12#include <net/ip.h>
13#include <net/ipv6.h>
14#include <net/netlink.h>
15#include <net/tcp.h>
16
17#include <linux/netfilter.h>
18#include <linux/netfilter/ipset/pfxlen.h>
19#include <linux/netfilter/ipset/ip_set.h>
20#include <linux/netfilter/ipset/ip_set_getport.h>
21#include <linux/netfilter/ipset/ip_set_hash.h>
22
23#define IPSET_TYPE_REV_MIN 0
24
25
26#define IPSET_TYPE_REV_MAX 2
27
28MODULE_LICENSE("GPL");
29MODULE_AUTHOR("Oliver Smith <oliver@8.c.9.b.0.7.4.0.1.0.0.2.ip6.arpa>");
30IP_SET_MODULE_DESC("hash:net,port,net", IPSET_TYPE_REV_MIN, IPSET_TYPE_REV_MAX);
31MODULE_ALIAS("ip_set_hash:net,port,net");
32
33
34#define HTYPE hash_netportnet
35#define IP_SET_HASH_WITH_PROTO
36#define IP_SET_HASH_WITH_NETS
37#define IPSET_NET_COUNT 2
38
39
40
41
42struct hash_netportnet4_elem {
43 union {
44 __be32 ip[2];
45 __be64 ipcmp;
46 };
47 __be16 port;
48 union {
49 u8 cidr[2];
50 u16 ccmp;
51 };
52 u16 padding;
53 u8 nomatch;
54 u8 proto;
55};
56
57
58
59static inline bool
60hash_netportnet4_data_equal(const struct hash_netportnet4_elem *ip1,
61 const struct hash_netportnet4_elem *ip2,
62 u32 *multi)
63{
64 return ip1->ipcmp == ip2->ipcmp &&
65 ip1->ccmp == ip2->ccmp &&
66 ip1->port == ip2->port &&
67 ip1->proto == ip2->proto;
68}
69
70static inline int
71hash_netportnet4_do_data_match(const struct hash_netportnet4_elem *elem)
72{
73 return elem->nomatch ? -ENOTEMPTY : 1;
74}
75
76static inline void
77hash_netportnet4_data_set_flags(struct hash_netportnet4_elem *elem, u32 flags)
78{
79 elem->nomatch = !!((flags >> 16) & IPSET_FLAG_NOMATCH);
80}
81
82static inline void
83hash_netportnet4_data_reset_flags(struct hash_netportnet4_elem *elem, u8 *flags)
84{
85 swap(*flags, elem->nomatch);
86}
87
88static inline void
89hash_netportnet4_data_reset_elem(struct hash_netportnet4_elem *elem,
90 struct hash_netportnet4_elem *orig)
91{
92 elem->ip[1] = orig->ip[1];
93}
94
95static inline void
96hash_netportnet4_data_netmask(struct hash_netportnet4_elem *elem,
97 u8 cidr, bool inner)
98{
99 if (inner) {
100 elem->ip[1] &= ip_set_netmask(cidr);
101 elem->cidr[1] = cidr;
102 } else {
103 elem->ip[0] &= ip_set_netmask(cidr);
104 elem->cidr[0] = cidr;
105 }
106}
107
108static bool
109hash_netportnet4_data_list(struct sk_buff *skb,
110 const struct hash_netportnet4_elem *data)
111{
112 u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;
113
114 if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, data->ip[0]) ||
115 nla_put_ipaddr4(skb, IPSET_ATTR_IP2, data->ip[1]) ||
116 nla_put_net16(skb, IPSET_ATTR_PORT, data->port) ||
117 nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr[0]) ||
118 nla_put_u8(skb, IPSET_ATTR_CIDR2, data->cidr[1]) ||
119 nla_put_u8(skb, IPSET_ATTR_PROTO, data->proto) ||
120 (flags &&
121 nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags))))
122 goto nla_put_failure;
123 return false;
124
125nla_put_failure:
126 return true;
127}
128
129static inline void
130hash_netportnet4_data_next(struct hash_netportnet4_elem *next,
131 const struct hash_netportnet4_elem *d)
132{
133 next->ipcmp = d->ipcmp;
134 next->port = d->port;
135}
136
137#define MTYPE hash_netportnet4
138#define HOST_MASK 32
139#include "ip_set_hash_gen.h"
140
141static void
142hash_netportnet4_init(struct hash_netportnet4_elem *e)
143{
144 e->cidr[0] = HOST_MASK;
145 e->cidr[1] = HOST_MASK;
146}
147
148static int
149hash_netportnet4_kadt(struct ip_set *set, const struct sk_buff *skb,
150 const struct xt_action_param *par,
151 enum ipset_adt adt, struct ip_set_adt_opt *opt)
152{
153 const struct hash_netportnet4 *h = set->data;
154 ipset_adtfn adtfn = set->variant->adt[adt];
155 struct hash_netportnet4_elem e = { };
156 struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
157
158 e.cidr[0] = INIT_CIDR(h->nets[0].cidr[0], HOST_MASK);
159 e.cidr[1] = INIT_CIDR(h->nets[0].cidr[1], HOST_MASK);
160 if (adt == IPSET_TEST)
161 e.ccmp = (HOST_MASK << (sizeof(e.cidr[0]) * 8)) | HOST_MASK;
162
163 if (!ip_set_get_ip4_port(skb, opt->flags & IPSET_DIM_TWO_SRC,
164 &e.port, &e.proto))
165 return -EINVAL;
166
167 ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip[0]);
168 ip4addrptr(skb, opt->flags & IPSET_DIM_THREE_SRC, &e.ip[1]);
169 e.ip[0] &= ip_set_netmask(e.cidr[0]);
170 e.ip[1] &= ip_set_netmask(e.cidr[1]);
171
172 return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
173}
174
175static int
176hash_netportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
177 enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
178{
179 const struct hash_netportnet4 *h = set->data;
180 ipset_adtfn adtfn = set->variant->adt[adt];
181 struct hash_netportnet4_elem e = { };
182 struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
183 u32 ip = 0, ip_to = 0, p = 0, port, port_to;
184 u32 ip2_from = 0, ip2_to = 0, ip2;
185 bool with_ports = false;
186 int ret;
187
188 if (tb[IPSET_ATTR_LINENO])
189 *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
190
191 hash_netportnet4_init(&e);
192 if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
193 !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
194 !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
195 !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
196 return -IPSET_ERR_PROTOCOL;
197
198 ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
199 if (ret)
200 return ret;
201
202 ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2], &ip2_from);
203 if (ret)
204 return ret;
205
206 ret = ip_set_get_extensions(set, tb, &ext);
207 if (ret)
208 return ret;
209
210 if (tb[IPSET_ATTR_CIDR]) {
211 e.cidr[0] = nla_get_u8(tb[IPSET_ATTR_CIDR]);
212 if (e.cidr[0] > HOST_MASK)
213 return -IPSET_ERR_INVALID_CIDR;
214 }
215
216 if (tb[IPSET_ATTR_CIDR2]) {
217 e.cidr[1] = nla_get_u8(tb[IPSET_ATTR_CIDR2]);
218 if (e.cidr[1] > HOST_MASK)
219 return -IPSET_ERR_INVALID_CIDR;
220 }
221
222 e.port = nla_get_be16(tb[IPSET_ATTR_PORT]);
223
224 if (tb[IPSET_ATTR_PROTO]) {
225 e.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
226 with_ports = ip_set_proto_with_ports(e.proto);
227
228 if (e.proto == 0)
229 return -IPSET_ERR_INVALID_PROTO;
230 } else {
231 return -IPSET_ERR_MISSING_PROTO;
232 }
233
234 if (!(with_ports || e.proto == IPPROTO_ICMP))
235 e.port = 0;
236
237 if (tb[IPSET_ATTR_CADT_FLAGS]) {
238 u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
239
240 if (cadt_flags & IPSET_FLAG_NOMATCH)
241 flags |= (IPSET_FLAG_NOMATCH << 16);
242 }
243
244 with_ports = with_ports && tb[IPSET_ATTR_PORT_TO];
245 if (adt == IPSET_TEST ||
246 !(tb[IPSET_ATTR_IP_TO] || with_ports || tb[IPSET_ATTR_IP2_TO])) {
247 e.ip[0] = htonl(ip & ip_set_hostmask(e.cidr[0]));
248 e.ip[1] = htonl(ip2_from & ip_set_hostmask(e.cidr[1]));
249 ret = adtfn(set, &e, &ext, &ext, flags);
250 return ip_set_enomatch(ret, flags, adt, set) ? -ret :
251 ip_set_eexist(ret, flags) ? 0 : ret;
252 }
253
254 ip_to = ip;
255 if (tb[IPSET_ATTR_IP_TO]) {
256 ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
257 if (ret)
258 return ret;
259 if (ip > ip_to)
260 swap(ip, ip_to);
261 if (unlikely(ip + UINT_MAX == ip_to))
262 return -IPSET_ERR_HASH_RANGE;
263 } else {
264 ip_set_mask_from_to(ip, ip_to, e.cidr[0]);
265 }
266
267 port_to = port = ntohs(e.port);
268 if (tb[IPSET_ATTR_PORT_TO]) {
269 port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
270 if (port > port_to)
271 swap(port, port_to);
272 }
273
274 ip2_to = ip2_from;
275 if (tb[IPSET_ATTR_IP2_TO]) {
276 ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2_TO], &ip2_to);
277 if (ret)
278 return ret;
279 if (ip2_from > ip2_to)
280 swap(ip2_from, ip2_to);
281 if (unlikely(ip2_from + UINT_MAX == ip2_to))
282 return -IPSET_ERR_HASH_RANGE;
283 } else {
284 ip_set_mask_from_to(ip2_from, ip2_to, e.cidr[1]);
285 }
286
287 if (retried) {
288 ip = ntohl(h->next.ip[0]);
289 p = ntohs(h->next.port);
290 ip2 = ntohl(h->next.ip[1]);
291 } else {
292 p = port;
293 ip2 = ip2_from;
294 }
295
296 do {
297 e.ip[0] = htonl(ip);
298 ip = ip_set_range_to_cidr(ip, ip_to, &e.cidr[0]);
299 for (; p <= port_to; p++) {
300 e.port = htons(p);
301 do {
302 e.ip[1] = htonl(ip2);
303 ip2 = ip_set_range_to_cidr(ip2, ip2_to,
304 &e.cidr[1]);
305 ret = adtfn(set, &e, &ext, &ext, flags);
306 if (ret && !ip_set_eexist(ret, flags))
307 return ret;
308
309 ret = 0;
310 } while (ip2++ < ip2_to);
311 ip2 = ip2_from;
312 }
313 p = port;
314 } while (ip++ < ip_to);
315 return ret;
316}
317
318
319
320struct hash_netportnet6_elem {
321 union nf_inet_addr ip[2];
322 __be16 port;
323 union {
324 u8 cidr[2];
325 u16 ccmp;
326 };
327 u16 padding;
328 u8 nomatch;
329 u8 proto;
330};
331
332
333
334static inline bool
335hash_netportnet6_data_equal(const struct hash_netportnet6_elem *ip1,
336 const struct hash_netportnet6_elem *ip2,
337 u32 *multi)
338{
339 return ipv6_addr_equal(&ip1->ip[0].in6, &ip2->ip[0].in6) &&
340 ipv6_addr_equal(&ip1->ip[1].in6, &ip2->ip[1].in6) &&
341 ip1->ccmp == ip2->ccmp &&
342 ip1->port == ip2->port &&
343 ip1->proto == ip2->proto;
344}
345
346static inline int
347hash_netportnet6_do_data_match(const struct hash_netportnet6_elem *elem)
348{
349 return elem->nomatch ? -ENOTEMPTY : 1;
350}
351
352static inline void
353hash_netportnet6_data_set_flags(struct hash_netportnet6_elem *elem, u32 flags)
354{
355 elem->nomatch = !!((flags >> 16) & IPSET_FLAG_NOMATCH);
356}
357
358static inline void
359hash_netportnet6_data_reset_flags(struct hash_netportnet6_elem *elem, u8 *flags)
360{
361 swap(*flags, elem->nomatch);
362}
363
364static inline void
365hash_netportnet6_data_reset_elem(struct hash_netportnet6_elem *elem,
366 struct hash_netportnet6_elem *orig)
367{
368 elem->ip[1] = orig->ip[1];
369}
370
371static inline void
372hash_netportnet6_data_netmask(struct hash_netportnet6_elem *elem,
373 u8 cidr, bool inner)
374{
375 if (inner) {
376 ip6_netmask(&elem->ip[1], cidr);
377 elem->cidr[1] = cidr;
378 } else {
379 ip6_netmask(&elem->ip[0], cidr);
380 elem->cidr[0] = cidr;
381 }
382}
383
384static bool
385hash_netportnet6_data_list(struct sk_buff *skb,
386 const struct hash_netportnet6_elem *data)
387{
388 u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0;
389
390 if (nla_put_ipaddr6(skb, IPSET_ATTR_IP, &data->ip[0].in6) ||
391 nla_put_ipaddr6(skb, IPSET_ATTR_IP2, &data->ip[1].in6) ||
392 nla_put_net16(skb, IPSET_ATTR_PORT, data->port) ||
393 nla_put_u8(skb, IPSET_ATTR_CIDR, data->cidr[0]) ||
394 nla_put_u8(skb, IPSET_ATTR_CIDR2, data->cidr[1]) ||
395 nla_put_u8(skb, IPSET_ATTR_PROTO, data->proto) ||
396 (flags &&
397 nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags))))
398 goto nla_put_failure;
399 return false;
400
401nla_put_failure:
402 return true;
403}
404
405static inline void
406hash_netportnet6_data_next(struct hash_netportnet6_elem *next,
407 const struct hash_netportnet6_elem *d)
408{
409 next->port = d->port;
410}
411
412#undef MTYPE
413#undef HOST_MASK
414
415#define MTYPE hash_netportnet6
416#define HOST_MASK 128
417#define IP_SET_EMIT_CREATE
418#include "ip_set_hash_gen.h"
419
420static void
421hash_netportnet6_init(struct hash_netportnet6_elem *e)
422{
423 e->cidr[0] = HOST_MASK;
424 e->cidr[1] = HOST_MASK;
425}
426
427static int
428hash_netportnet6_kadt(struct ip_set *set, const struct sk_buff *skb,
429 const struct xt_action_param *par,
430 enum ipset_adt adt, struct ip_set_adt_opt *opt)
431{
432 const struct hash_netportnet6 *h = set->data;
433 ipset_adtfn adtfn = set->variant->adt[adt];
434 struct hash_netportnet6_elem e = { };
435 struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
436
437 e.cidr[0] = INIT_CIDR(h->nets[0].cidr[0], HOST_MASK);
438 e.cidr[1] = INIT_CIDR(h->nets[0].cidr[1], HOST_MASK);
439 if (adt == IPSET_TEST)
440 e.ccmp = (HOST_MASK << (sizeof(u8) * 8)) | HOST_MASK;
441
442 if (!ip_set_get_ip6_port(skb, opt->flags & IPSET_DIM_TWO_SRC,
443 &e.port, &e.proto))
444 return -EINVAL;
445
446 ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip[0].in6);
447 ip6addrptr(skb, opt->flags & IPSET_DIM_THREE_SRC, &e.ip[1].in6);
448 ip6_netmask(&e.ip[0], e.cidr[0]);
449 ip6_netmask(&e.ip[1], e.cidr[1]);
450
451 return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
452}
453
454static int
455hash_netportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
456 enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
457{
458 const struct hash_netportnet6 *h = set->data;
459 ipset_adtfn adtfn = set->variant->adt[adt];
460 struct hash_netportnet6_elem e = { };
461 struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
462 u32 port, port_to;
463 bool with_ports = false;
464 int ret;
465
466 if (tb[IPSET_ATTR_LINENO])
467 *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
468
469 hash_netportnet6_init(&e);
470 if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
471 !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
472 !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
473 !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
474 return -IPSET_ERR_PROTOCOL;
475 if (unlikely(tb[IPSET_ATTR_IP_TO] || tb[IPSET_ATTR_IP2_TO]))
476 return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;
477
478 ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip[0]);
479 if (ret)
480 return ret;
481
482 ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP2], &e.ip[1]);
483 if (ret)
484 return ret;
485
486 ret = ip_set_get_extensions(set, tb, &ext);
487 if (ret)
488 return ret;
489
490 if (tb[IPSET_ATTR_CIDR]) {
491 e.cidr[0] = nla_get_u8(tb[IPSET_ATTR_CIDR]);
492 if (e.cidr[0] > HOST_MASK)
493 return -IPSET_ERR_INVALID_CIDR;
494 }
495
496 if (tb[IPSET_ATTR_CIDR2]) {
497 e.cidr[1] = nla_get_u8(tb[IPSET_ATTR_CIDR2]);
498 if (e.cidr[1] > HOST_MASK)
499 return -IPSET_ERR_INVALID_CIDR;
500 }
501
502 ip6_netmask(&e.ip[0], e.cidr[0]);
503 ip6_netmask(&e.ip[1], e.cidr[1]);
504
505 e.port = nla_get_be16(tb[IPSET_ATTR_PORT]);
506
507 if (tb[IPSET_ATTR_PROTO]) {
508 e.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
509 with_ports = ip_set_proto_with_ports(e.proto);
510
511 if (e.proto == 0)
512 return -IPSET_ERR_INVALID_PROTO;
513 } else {
514 return -IPSET_ERR_MISSING_PROTO;
515 }
516
517 if (!(with_ports || e.proto == IPPROTO_ICMPV6))
518 e.port = 0;
519
520 if (tb[IPSET_ATTR_CADT_FLAGS]) {
521 u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
522
523 if (cadt_flags & IPSET_FLAG_NOMATCH)
524 flags |= (IPSET_FLAG_NOMATCH << 16);
525 }
526
527 if (adt == IPSET_TEST || !with_ports || !tb[IPSET_ATTR_PORT_TO]) {
528 ret = adtfn(set, &e, &ext, &ext, flags);
529 return ip_set_enomatch(ret, flags, adt, set) ? -ret :
530 ip_set_eexist(ret, flags) ? 0 : ret;
531 }
532
533 port = ntohs(e.port);
534 port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
535 if (port > port_to)
536 swap(port, port_to);
537
538 if (retried)
539 port = ntohs(h->next.port);
540 for (; port <= port_to; port++) {
541 e.port = htons(port);
542 ret = adtfn(set, &e, &ext, &ext, flags);
543
544 if (ret && !ip_set_eexist(ret, flags))
545 return ret;
546
547 ret = 0;
548 }
549 return ret;
550}
551
552static struct ip_set_type hash_netportnet_type __read_mostly = {
553 .name = "hash:net,port,net",
554 .protocol = IPSET_PROTOCOL,
555 .features = IPSET_TYPE_IP | IPSET_TYPE_PORT | IPSET_TYPE_IP2 |
556 IPSET_TYPE_NOMATCH,
557 .dimension = IPSET_DIM_THREE,
558 .family = NFPROTO_UNSPEC,
559 .revision_min = IPSET_TYPE_REV_MIN,
560 .revision_max = IPSET_TYPE_REV_MAX,
561 .create = hash_netportnet_create,
562 .create_policy = {
563 [IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
564 [IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
565 [IPSET_ATTR_PROBES] = { .type = NLA_U8 },
566 [IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
567 [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
568 [IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 },
569 },
570 .adt_policy = {
571 [IPSET_ATTR_IP] = { .type = NLA_NESTED },
572 [IPSET_ATTR_IP_TO] = { .type = NLA_NESTED },
573 [IPSET_ATTR_IP2] = { .type = NLA_NESTED },
574 [IPSET_ATTR_IP2_TO] = { .type = NLA_NESTED },
575 [IPSET_ATTR_PORT] = { .type = NLA_U16 },
576 [IPSET_ATTR_PORT_TO] = { .type = NLA_U16 },
577 [IPSET_ATTR_CIDR] = { .type = NLA_U8 },
578 [IPSET_ATTR_CIDR2] = { .type = NLA_U8 },
579 [IPSET_ATTR_PROTO] = { .type = NLA_U8 },
580 [IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 },
581 [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
582 [IPSET_ATTR_LINENO] = { .type = NLA_U32 },
583 [IPSET_ATTR_BYTES] = { .type = NLA_U64 },
584 [IPSET_ATTR_PACKETS] = { .type = NLA_U64 },
585 [IPSET_ATTR_COMMENT] = { .type = NLA_NUL_STRING,
586 .len = IPSET_MAX_COMMENT_SIZE },
587 [IPSET_ATTR_SKBMARK] = { .type = NLA_U64 },
588 [IPSET_ATTR_SKBPRIO] = { .type = NLA_U32 },
589 [IPSET_ATTR_SKBQUEUE] = { .type = NLA_U16 },
590 },
591 .me = THIS_MODULE,
592};
593
594static int __init
595hash_netportnet_init(void)
596{
597 return ip_set_type_register(&hash_netportnet_type);
598}
599
600static void __exit
601hash_netportnet_fini(void)
602{
603 rcu_barrier();
604 ip_set_type_unregister(&hash_netportnet_type);
605}
606
607module_init(hash_netportnet_init);
608module_exit(hash_netportnet_fini);
609
