1 /* Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
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.
8 /* Kernel module implementing an IP set type: the hash:ip,port,ip type */
10 #include <linux/jhash.h>
11 #include <linux/module.h>
13 #include <linux/skbuff.h>
14 #include <linux/errno.h>
15 #include <linux/random.h>
18 #include <net/netlink.h>
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>
27 #define IPSET_TYPE_REV_MIN 0
28 /* 1 SCTP and UDPLITE support added */
29 /* 2 Counters support added */
30 /* 3 Comments support added */
31 #define IPSET_TYPE_REV_MAX 4 /* Forceadd support added */
33 MODULE_LICENSE("GPL");
34 MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
35 IP_SET_MODULE_DESC("hash:ip,port,ip", IPSET_TYPE_REV_MIN, IPSET_TYPE_REV_MAX);
36 MODULE_ALIAS("ip_set_hash:ip,port,ip");
38 /* Type specific function prefix */
39 #define HTYPE hash_ipportip
44 struct hash_ipportip4_elem {
53 hash_ipportip4_data_equal(const struct hash_ipportip4_elem *ip1,
54 const struct hash_ipportip4_elem *ip2,
57 return ip1->ip == ip2->ip &&
58 ip1->ip2 == ip2->ip2 &&
59 ip1->port == ip2->port &&
60 ip1->proto == ip2->proto;
64 hash_ipportip4_data_list(struct sk_buff *skb,
65 const struct hash_ipportip4_elem *data)
67 if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, data->ip) ||
68 nla_put_ipaddr4(skb, IPSET_ATTR_IP2, data->ip2) ||
69 nla_put_net16(skb, IPSET_ATTR_PORT, data->port) ||
70 nla_put_u8(skb, IPSET_ATTR_PROTO, data->proto))
79 hash_ipportip4_data_next(struct hash_ipportip4_elem *next,
80 const struct hash_ipportip4_elem *d)
86 /* Common functions */
87 #define MTYPE hash_ipportip4
90 #include "ip_set_hash_gen.h"
93 hash_ipportip4_kadt(struct ip_set *set, const struct sk_buff *skb,
94 const struct xt_action_param *par,
95 enum ipset_adt adt, struct ip_set_adt_opt *opt)
97 ipset_adtfn adtfn = set->variant->adt[adt];
98 struct hash_ipportip4_elem e = { };
99 struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
101 if (!ip_set_get_ip4_port(skb, opt->flags & IPSET_DIM_TWO_SRC,
105 ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip);
106 ip4addrptr(skb, opt->flags & IPSET_DIM_THREE_SRC, &e.ip2);
107 return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
111 hash_ipportip4_uadt(struct ip_set *set, struct nlattr *tb[],
112 enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
114 const struct hash_ipportip *h = set->data;
115 ipset_adtfn adtfn = set->variant->adt[adt];
116 struct hash_ipportip4_elem e = { };
117 struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
118 u32 ip, ip_to = 0, p = 0, port, port_to;
119 bool with_ports = false;
122 if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
123 !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
124 !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
125 !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) ||
126 !ip_set_optattr_netorder(tb, IPSET_ATTR_PACKETS) ||
127 !ip_set_optattr_netorder(tb, IPSET_ATTR_BYTES)))
128 return -IPSET_ERR_PROTOCOL;
130 if (tb[IPSET_ATTR_LINENO])
131 *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
133 ret = ip_set_get_ipaddr4(tb[IPSET_ATTR_IP], &e.ip) ||
134 ip_set_get_extensions(set, tb, &ext);
138 ret = ip_set_get_ipaddr4(tb[IPSET_ATTR_IP2], &e.ip2);
142 if (tb[IPSET_ATTR_PORT])
143 e.port = nla_get_be16(tb[IPSET_ATTR_PORT]);
145 return -IPSET_ERR_PROTOCOL;
147 if (tb[IPSET_ATTR_PROTO]) {
148 e.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
149 with_ports = ip_set_proto_with_ports(e.proto);
152 return -IPSET_ERR_INVALID_PROTO;
154 return -IPSET_ERR_MISSING_PROTO;
156 if (!(with_ports || e.proto == IPPROTO_ICMP))
159 if (adt == IPSET_TEST ||
160 !(tb[IPSET_ATTR_IP_TO] || tb[IPSET_ATTR_CIDR] ||
161 tb[IPSET_ATTR_PORT_TO])) {
162 ret = adtfn(set, &e, &ext, &ext, flags);
163 return ip_set_eexist(ret, flags) ? 0 : ret;
166 ip_to = ip = ntohl(e.ip);
167 if (tb[IPSET_ATTR_IP_TO]) {
168 ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
173 } else if (tb[IPSET_ATTR_CIDR]) {
174 u8 cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
176 if (!cidr || cidr > 32)
177 return -IPSET_ERR_INVALID_CIDR;
178 ip_set_mask_from_to(ip, ip_to, cidr);
181 port_to = port = ntohs(e.port);
182 if (with_ports && tb[IPSET_ATTR_PORT_TO]) {
183 port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
189 ip = ntohl(h->next.ip);
190 for (; !before(ip_to, ip); ip++) {
191 p = retried && ip == ntohl(h->next.ip) ? ntohs(h->next.port)
193 for (; p <= port_to; p++) {
196 ret = adtfn(set, &e, &ext, &ext, flags);
198 if (ret && !ip_set_eexist(ret, flags))
209 struct hash_ipportip6_elem {
210 union nf_inet_addr ip;
211 union nf_inet_addr ip2;
217 /* Common functions */
220 hash_ipportip6_data_equal(const struct hash_ipportip6_elem *ip1,
221 const struct hash_ipportip6_elem *ip2,
224 return ipv6_addr_equal(&ip1->ip.in6, &ip2->ip.in6) &&
225 ipv6_addr_equal(&ip1->ip2.in6, &ip2->ip2.in6) &&
226 ip1->port == ip2->port &&
227 ip1->proto == ip2->proto;
231 hash_ipportip6_data_list(struct sk_buff *skb,
232 const struct hash_ipportip6_elem *data)
234 if (nla_put_ipaddr6(skb, IPSET_ATTR_IP, &data->ip.in6) ||
235 nla_put_ipaddr6(skb, IPSET_ATTR_IP2, &data->ip2.in6) ||
236 nla_put_net16(skb, IPSET_ATTR_PORT, data->port) ||
237 nla_put_u8(skb, IPSET_ATTR_PROTO, data->proto))
238 goto nla_put_failure;
246 hash_ipportip6_data_next(struct hash_ipportip4_elem *next,
247 const struct hash_ipportip6_elem *d)
249 next->port = d->port;
256 #define MTYPE hash_ipportip6
258 #define HOST_MASK 128
259 #define IP_SET_EMIT_CREATE
260 #include "ip_set_hash_gen.h"
263 hash_ipportip6_kadt(struct ip_set *set, const struct sk_buff *skb,
264 const struct xt_action_param *par,
265 enum ipset_adt adt, struct ip_set_adt_opt *opt)
267 ipset_adtfn adtfn = set->variant->adt[adt];
268 struct hash_ipportip6_elem e = { };
269 struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
271 if (!ip_set_get_ip6_port(skb, opt->flags & IPSET_DIM_TWO_SRC,
275 ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip.in6);
276 ip6addrptr(skb, opt->flags & IPSET_DIM_THREE_SRC, &e.ip2.in6);
277 return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
281 hash_ipportip6_uadt(struct ip_set *set, struct nlattr *tb[],
282 enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
284 const struct hash_ipportip *h = set->data;
285 ipset_adtfn adtfn = set->variant->adt[adt];
286 struct hash_ipportip6_elem e = { };
287 struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
289 bool with_ports = false;
292 if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
293 !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
294 !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
295 !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) ||
296 !ip_set_optattr_netorder(tb, IPSET_ATTR_PACKETS) ||
297 !ip_set_optattr_netorder(tb, IPSET_ATTR_BYTES) ||
298 tb[IPSET_ATTR_IP_TO] ||
299 tb[IPSET_ATTR_CIDR]))
300 return -IPSET_ERR_PROTOCOL;
302 if (tb[IPSET_ATTR_LINENO])
303 *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
305 ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip) ||
306 ip_set_get_extensions(set, tb, &ext);
310 ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP2], &e.ip2);
314 if (tb[IPSET_ATTR_PORT])
315 e.port = nla_get_be16(tb[IPSET_ATTR_PORT]);
317 return -IPSET_ERR_PROTOCOL;
319 if (tb[IPSET_ATTR_PROTO]) {
320 e.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
321 with_ports = ip_set_proto_with_ports(e.proto);
324 return -IPSET_ERR_INVALID_PROTO;
326 return -IPSET_ERR_MISSING_PROTO;
328 if (!(with_ports || e.proto == IPPROTO_ICMPV6))
331 if (adt == IPSET_TEST || !with_ports || !tb[IPSET_ATTR_PORT_TO]) {
332 ret = adtfn(set, &e, &ext, &ext, flags);
333 return ip_set_eexist(ret, flags) ? 0 : ret;
336 port = ntohs(e.port);
337 port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
342 port = ntohs(h->next.port);
343 for (; port <= port_to; port++) {
344 e.port = htons(port);
345 ret = adtfn(set, &e, &ext, &ext, flags);
347 if (ret && !ip_set_eexist(ret, flags))
355 static struct ip_set_type hash_ipportip_type __read_mostly = {
356 .name = "hash:ip,port,ip",
357 .protocol = IPSET_PROTOCOL,
358 .features = IPSET_TYPE_IP | IPSET_TYPE_PORT | IPSET_TYPE_IP2,
359 .dimension = IPSET_DIM_THREE,
360 .family = NFPROTO_UNSPEC,
361 .revision_min = IPSET_TYPE_REV_MIN,
362 .revision_max = IPSET_TYPE_REV_MAX,
363 .create = hash_ipportip_create,
365 [IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
366 [IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
367 [IPSET_ATTR_PROBES] = { .type = NLA_U8 },
368 [IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
369 [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
370 [IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 },
373 [IPSET_ATTR_IP] = { .type = NLA_NESTED },
374 [IPSET_ATTR_IP_TO] = { .type = NLA_NESTED },
375 [IPSET_ATTR_IP2] = { .type = NLA_NESTED },
376 [IPSET_ATTR_PORT] = { .type = NLA_U16 },
377 [IPSET_ATTR_PORT_TO] = { .type = NLA_U16 },
378 [IPSET_ATTR_CIDR] = { .type = NLA_U8 },
379 [IPSET_ATTR_PROTO] = { .type = NLA_U8 },
380 [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
381 [IPSET_ATTR_LINENO] = { .type = NLA_U32 },
382 [IPSET_ATTR_BYTES] = { .type = NLA_U64 },
383 [IPSET_ATTR_PACKETS] = { .type = NLA_U64 },
384 [IPSET_ATTR_COMMENT] = { .type = NLA_NUL_STRING },
390 hash_ipportip_init(void)
392 return ip_set_type_register(&hash_ipportip_type);
396 hash_ipportip_fini(void)
398 ip_set_type_unregister(&hash_ipportip_type);
401 module_init(hash_ipportip_init);
402 module_exit(hash_ipportip_fini);