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 /* 4 Forceadd support added */
32 #define IPSET_TYPE_REV_MAX 5 /* skbinfo support added */
34 MODULE_LICENSE("GPL");
35 MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
36 IP_SET_MODULE_DESC("hash:ip,port,ip", IPSET_TYPE_REV_MIN, IPSET_TYPE_REV_MAX);
37 MODULE_ALIAS("ip_set_hash:ip,port,ip");
39 /* Type specific function prefix */
40 #define HTYPE hash_ipportip
45 struct hash_ipportip4_elem {
54 hash_ipportip4_data_equal(const struct hash_ipportip4_elem *ip1,
55 const struct hash_ipportip4_elem *ip2,
58 return ip1->ip == ip2->ip &&
59 ip1->ip2 == ip2->ip2 &&
60 ip1->port == ip2->port &&
61 ip1->proto == ip2->proto;
65 hash_ipportip4_data_list(struct sk_buff *skb,
66 const struct hash_ipportip4_elem *data)
68 if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, data->ip) ||
69 nla_put_ipaddr4(skb, IPSET_ATTR_IP2, data->ip2) ||
70 nla_put_net16(skb, IPSET_ATTR_PORT, data->port) ||
71 nla_put_u8(skb, IPSET_ATTR_PROTO, data->proto))
80 hash_ipportip4_data_next(struct hash_ipportip4_elem *next,
81 const struct hash_ipportip4_elem *d)
87 /* Common functions */
88 #define MTYPE hash_ipportip4
91 #include "ip_set_hash_gen.h"
94 hash_ipportip4_kadt(struct ip_set *set, const struct sk_buff *skb,
95 const struct xt_action_param *par,
96 enum ipset_adt adt, struct ip_set_adt_opt *opt)
98 ipset_adtfn adtfn = set->variant->adt[adt];
99 struct hash_ipportip4_elem e = { .ip = 0 };
100 struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
102 if (!ip_set_get_ip4_port(skb, opt->flags & IPSET_DIM_TWO_SRC,
106 ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip);
107 ip4addrptr(skb, opt->flags & IPSET_DIM_THREE_SRC, &e.ip2);
108 return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
112 hash_ipportip4_uadt(struct ip_set *set, struct nlattr *tb[],
113 enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
115 const struct hash_ipportip *h = set->data;
116 ipset_adtfn adtfn = set->variant->adt[adt];
117 struct hash_ipportip4_elem e = { .ip = 0 };
118 struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
119 u32 ip, ip_to = 0, p = 0, port, port_to;
120 bool with_ports = false;
123 if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
124 !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
125 !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
126 !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) ||
127 !ip_set_optattr_netorder(tb, IPSET_ATTR_PACKETS) ||
128 !ip_set_optattr_netorder(tb, IPSET_ATTR_BYTES) ||
129 !ip_set_optattr_netorder(tb, IPSET_ATTR_SKBMARK) ||
130 !ip_set_optattr_netorder(tb, IPSET_ATTR_SKBPRIO) ||
131 !ip_set_optattr_netorder(tb, IPSET_ATTR_SKBQUEUE)))
132 return -IPSET_ERR_PROTOCOL;
134 if (tb[IPSET_ATTR_LINENO])
135 *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
137 ret = ip_set_get_ipaddr4(tb[IPSET_ATTR_IP], &e.ip) ||
138 ip_set_get_extensions(set, tb, &ext);
142 ret = ip_set_get_ipaddr4(tb[IPSET_ATTR_IP2], &e.ip2);
146 if (tb[IPSET_ATTR_PORT])
147 e.port = nla_get_be16(tb[IPSET_ATTR_PORT]);
149 return -IPSET_ERR_PROTOCOL;
151 if (tb[IPSET_ATTR_PROTO]) {
152 e.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
153 with_ports = ip_set_proto_with_ports(e.proto);
156 return -IPSET_ERR_INVALID_PROTO;
158 return -IPSET_ERR_MISSING_PROTO;
160 if (!(with_ports || e.proto == IPPROTO_ICMP))
163 if (adt == IPSET_TEST ||
164 !(tb[IPSET_ATTR_IP_TO] || tb[IPSET_ATTR_CIDR] ||
165 tb[IPSET_ATTR_PORT_TO])) {
166 ret = adtfn(set, &e, &ext, &ext, flags);
167 return ip_set_eexist(ret, flags) ? 0 : ret;
170 ip_to = ip = ntohl(e.ip);
171 if (tb[IPSET_ATTR_IP_TO]) {
172 ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
177 } else if (tb[IPSET_ATTR_CIDR]) {
178 u8 cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
180 if (!cidr || cidr > 32)
181 return -IPSET_ERR_INVALID_CIDR;
182 ip_set_mask_from_to(ip, ip_to, cidr);
185 port_to = port = ntohs(e.port);
186 if (with_ports && tb[IPSET_ATTR_PORT_TO]) {
187 port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
193 ip = ntohl(h->next.ip);
194 for (; !before(ip_to, ip); ip++) {
195 p = retried && ip == ntohl(h->next.ip) ? ntohs(h->next.port)
197 for (; p <= port_to; p++) {
200 ret = adtfn(set, &e, &ext, &ext, flags);
202 if (ret && !ip_set_eexist(ret, flags))
213 struct hash_ipportip6_elem {
214 union nf_inet_addr ip;
215 union nf_inet_addr ip2;
221 /* Common functions */
224 hash_ipportip6_data_equal(const struct hash_ipportip6_elem *ip1,
225 const struct hash_ipportip6_elem *ip2,
228 return ipv6_addr_equal(&ip1->ip.in6, &ip2->ip.in6) &&
229 ipv6_addr_equal(&ip1->ip2.in6, &ip2->ip2.in6) &&
230 ip1->port == ip2->port &&
231 ip1->proto == ip2->proto;
235 hash_ipportip6_data_list(struct sk_buff *skb,
236 const struct hash_ipportip6_elem *data)
238 if (nla_put_ipaddr6(skb, IPSET_ATTR_IP, &data->ip.in6) ||
239 nla_put_ipaddr6(skb, IPSET_ATTR_IP2, &data->ip2.in6) ||
240 nla_put_net16(skb, IPSET_ATTR_PORT, data->port) ||
241 nla_put_u8(skb, IPSET_ATTR_PROTO, data->proto))
242 goto nla_put_failure;
250 hash_ipportip6_data_next(struct hash_ipportip4_elem *next,
251 const struct hash_ipportip6_elem *d)
253 next->port = d->port;
260 #define MTYPE hash_ipportip6
262 #define HOST_MASK 128
263 #define IP_SET_EMIT_CREATE
264 #include "ip_set_hash_gen.h"
267 hash_ipportip6_kadt(struct ip_set *set, const struct sk_buff *skb,
268 const struct xt_action_param *par,
269 enum ipset_adt adt, struct ip_set_adt_opt *opt)
271 ipset_adtfn adtfn = set->variant->adt[adt];
272 struct hash_ipportip6_elem e = { .ip = { .all = { 0 } } };
273 struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
275 if (!ip_set_get_ip6_port(skb, opt->flags & IPSET_DIM_TWO_SRC,
279 ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &e.ip.in6);
280 ip6addrptr(skb, opt->flags & IPSET_DIM_THREE_SRC, &e.ip2.in6);
281 return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
285 hash_ipportip6_uadt(struct ip_set *set, struct nlattr *tb[],
286 enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
288 const struct hash_ipportip *h = set->data;
289 ipset_adtfn adtfn = set->variant->adt[adt];
290 struct hash_ipportip6_elem e = { .ip = { .all = { 0 } } };
291 struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
293 bool with_ports = false;
296 if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
297 !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
298 !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
299 !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) ||
300 !ip_set_optattr_netorder(tb, IPSET_ATTR_PACKETS) ||
301 !ip_set_optattr_netorder(tb, IPSET_ATTR_BYTES) ||
302 !ip_set_optattr_netorder(tb, IPSET_ATTR_SKBMARK) ||
303 !ip_set_optattr_netorder(tb, IPSET_ATTR_SKBPRIO) ||
304 !ip_set_optattr_netorder(tb, IPSET_ATTR_SKBQUEUE) ||
305 tb[IPSET_ATTR_IP_TO] ||
306 tb[IPSET_ATTR_CIDR]))
307 return -IPSET_ERR_PROTOCOL;
309 if (tb[IPSET_ATTR_LINENO])
310 *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
312 ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip) ||
313 ip_set_get_extensions(set, tb, &ext);
317 ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP2], &e.ip2);
321 if (tb[IPSET_ATTR_PORT])
322 e.port = nla_get_be16(tb[IPSET_ATTR_PORT]);
324 return -IPSET_ERR_PROTOCOL;
326 if (tb[IPSET_ATTR_PROTO]) {
327 e.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
328 with_ports = ip_set_proto_with_ports(e.proto);
331 return -IPSET_ERR_INVALID_PROTO;
333 return -IPSET_ERR_MISSING_PROTO;
335 if (!(with_ports || e.proto == IPPROTO_ICMPV6))
338 if (adt == IPSET_TEST || !with_ports || !tb[IPSET_ATTR_PORT_TO]) {
339 ret = adtfn(set, &e, &ext, &ext, flags);
340 return ip_set_eexist(ret, flags) ? 0 : ret;
343 port = ntohs(e.port);
344 port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
349 port = ntohs(h->next.port);
350 for (; port <= port_to; port++) {
351 e.port = htons(port);
352 ret = adtfn(set, &e, &ext, &ext, flags);
354 if (ret && !ip_set_eexist(ret, flags))
362 static struct ip_set_type hash_ipportip_type __read_mostly = {
363 .name = "hash:ip,port,ip",
364 .protocol = IPSET_PROTOCOL,
365 .features = IPSET_TYPE_IP | IPSET_TYPE_PORT | IPSET_TYPE_IP2,
366 .dimension = IPSET_DIM_THREE,
367 .family = NFPROTO_UNSPEC,
368 .revision_min = IPSET_TYPE_REV_MIN,
369 .revision_max = IPSET_TYPE_REV_MAX,
370 .create = hash_ipportip_create,
372 [IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
373 [IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
374 [IPSET_ATTR_PROBES] = { .type = NLA_U8 },
375 [IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
376 [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
377 [IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 },
380 [IPSET_ATTR_IP] = { .type = NLA_NESTED },
381 [IPSET_ATTR_IP_TO] = { .type = NLA_NESTED },
382 [IPSET_ATTR_IP2] = { .type = NLA_NESTED },
383 [IPSET_ATTR_PORT] = { .type = NLA_U16 },
384 [IPSET_ATTR_PORT_TO] = { .type = NLA_U16 },
385 [IPSET_ATTR_CIDR] = { .type = NLA_U8 },
386 [IPSET_ATTR_PROTO] = { .type = NLA_U8 },
387 [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
388 [IPSET_ATTR_LINENO] = { .type = NLA_U32 },
389 [IPSET_ATTR_BYTES] = { .type = NLA_U64 },
390 [IPSET_ATTR_PACKETS] = { .type = NLA_U64 },
391 [IPSET_ATTR_COMMENT] = { .type = NLA_NUL_STRING },
392 [IPSET_ATTR_SKBMARK] = { .type = NLA_U64 },
393 [IPSET_ATTR_SKBPRIO] = { .type = NLA_U32 },
394 [IPSET_ATTR_SKBQUEUE] = { .type = NLA_U16 },
400 hash_ipportip_init(void)
402 return ip_set_type_register(&hash_ipportip_type);
406 hash_ipportip_fini(void)
408 ip_set_type_unregister(&hash_ipportip_type);
411 module_init(hash_ipportip_init);
412 module_exit(hash_ipportip_fini);