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41d22f7b JK |
1 | /* Copyright (C) 2003-2011 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> | |
41d22f7b JK |
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_timeout.h> | |
25 | #include <linux/netfilter/ipset/ip_set_getport.h> | |
26 | #include <linux/netfilter/ipset/ip_set_hash.h> | |
27 | ||
10111a6e JK |
28 | #define REVISION_MIN 0 |
29 | /* 1 SCTP and UDPLITE support added */ | |
30 | /* 2 Range as input support for IPv4 added */ | |
31 | #define REVISION_MAX 3 /* nomatch flag support added */ | |
32 | ||
41d22f7b JK |
33 | MODULE_LICENSE("GPL"); |
34 | MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); | |
10111a6e | 35 | IP_SET_MODULE_DESC("hash:ip,port,net", REVISION_MIN, REVISION_MAX); |
41d22f7b JK |
36 | MODULE_ALIAS("ip_set_hash:ip,port,net"); |
37 | ||
38 | /* Type specific function prefix */ | |
39 | #define TYPE hash_ipportnet | |
40 | ||
41 | static bool | |
42 | hash_ipportnet_same_set(const struct ip_set *a, const struct ip_set *b); | |
43 | ||
44 | #define hash_ipportnet4_same_set hash_ipportnet_same_set | |
45 | #define hash_ipportnet6_same_set hash_ipportnet_same_set | |
46 | ||
47 | /* The type variant functions: IPv4 */ | |
48 | ||
2a7cef2a JK |
49 | /* We squeeze the "nomatch" flag into cidr: we don't support cidr == 0 |
50 | * However this way we have to store internally cidr - 1, | |
51 | * dancing back and forth. | |
52 | */ | |
53 | #define IP_SET_HASH_WITH_NETS_PACKED | |
54 | ||
41d22f7b JK |
55 | /* Member elements without timeout */ |
56 | struct hash_ipportnet4_elem { | |
57 | __be32 ip; | |
58 | __be32 ip2; | |
59 | __be16 port; | |
2a7cef2a JK |
60 | u8 cidr:7; |
61 | u8 nomatch:1; | |
41d22f7b JK |
62 | u8 proto; |
63 | }; | |
64 | ||
65 | /* Member elements with timeout support */ | |
66 | struct hash_ipportnet4_telem { | |
67 | __be32 ip; | |
68 | __be32 ip2; | |
69 | __be16 port; | |
2a7cef2a JK |
70 | u8 cidr:7; |
71 | u8 nomatch:1; | |
41d22f7b JK |
72 | u8 proto; |
73 | unsigned long timeout; | |
74 | }; | |
75 | ||
76 | static inline bool | |
77 | hash_ipportnet4_data_equal(const struct hash_ipportnet4_elem *ip1, | |
89dc79b7 JK |
78 | const struct hash_ipportnet4_elem *ip2, |
79 | u32 *multi) | |
41d22f7b JK |
80 | { |
81 | return ip1->ip == ip2->ip && | |
82 | ip1->ip2 == ip2->ip2 && | |
83 | ip1->cidr == ip2->cidr && | |
84 | ip1->port == ip2->port && | |
85 | ip1->proto == ip2->proto; | |
86 | } | |
87 | ||
88 | static inline bool | |
89 | hash_ipportnet4_data_isnull(const struct hash_ipportnet4_elem *elem) | |
90 | { | |
91 | return elem->proto == 0; | |
92 | } | |
93 | ||
94 | static inline void | |
95 | hash_ipportnet4_data_copy(struct hash_ipportnet4_elem *dst, | |
96 | const struct hash_ipportnet4_elem *src) | |
97 | { | |
98 | memcpy(dst, src, sizeof(*dst)); | |
99 | } | |
100 | ||
2a7cef2a JK |
101 | static inline void |
102 | hash_ipportnet4_data_flags(struct hash_ipportnet4_elem *dst, u32 flags) | |
103 | { | |
104 | dst->nomatch = !!(flags & IPSET_FLAG_NOMATCH); | |
105 | } | |
106 | ||
3e0304a5 | 107 | static inline int |
2a7cef2a JK |
108 | hash_ipportnet4_data_match(const struct hash_ipportnet4_elem *elem) |
109 | { | |
3e0304a5 | 110 | return elem->nomatch ? -ENOTEMPTY : 1; |
2a7cef2a JK |
111 | } |
112 | ||
41d22f7b JK |
113 | static inline void |
114 | hash_ipportnet4_data_netmask(struct hash_ipportnet4_elem *elem, u8 cidr) | |
115 | { | |
116 | elem->ip2 &= ip_set_netmask(cidr); | |
2a7cef2a | 117 | elem->cidr = cidr - 1; |
41d22f7b JK |
118 | } |
119 | ||
120 | static inline void | |
121 | hash_ipportnet4_data_zero_out(struct hash_ipportnet4_elem *elem) | |
122 | { | |
123 | elem->proto = 0; | |
124 | } | |
125 | ||
126 | static bool | |
127 | hash_ipportnet4_data_list(struct sk_buff *skb, | |
128 | const struct hash_ipportnet4_elem *data) | |
129 | { | |
2a7cef2a JK |
130 | u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0; |
131 | ||
7cf7899d DM |
132 | if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, data->ip) || |
133 | nla_put_ipaddr4(skb, IPSET_ATTR_IP2, data->ip2) || | |
134 | nla_put_net16(skb, IPSET_ATTR_PORT, data->port) || | |
135 | nla_put_u8(skb, IPSET_ATTR_CIDR2, data->cidr + 1) || | |
136 | nla_put_u8(skb, IPSET_ATTR_PROTO, data->proto) || | |
137 | (flags && | |
138 | nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags)))) | |
139 | goto nla_put_failure; | |
41d22f7b JK |
140 | return 0; |
141 | ||
142 | nla_put_failure: | |
143 | return 1; | |
144 | } | |
145 | ||
146 | static bool | |
147 | hash_ipportnet4_data_tlist(struct sk_buff *skb, | |
148 | const struct hash_ipportnet4_elem *data) | |
149 | { | |
150 | const struct hash_ipportnet4_telem *tdata = | |
151 | (const struct hash_ipportnet4_telem *)data; | |
2a7cef2a | 152 | u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0; |
41d22f7b | 153 | |
7cf7899d DM |
154 | if (nla_put_ipaddr4(skb, IPSET_ATTR_IP, tdata->ip) || |
155 | nla_put_ipaddr4(skb, IPSET_ATTR_IP2, tdata->ip2) || | |
156 | nla_put_net16(skb, IPSET_ATTR_PORT, tdata->port) || | |
157 | nla_put_u8(skb, IPSET_ATTR_CIDR2, data->cidr + 1) || | |
158 | nla_put_u8(skb, IPSET_ATTR_PROTO, data->proto) || | |
159 | nla_put_net32(skb, IPSET_ATTR_TIMEOUT, | |
160 | htonl(ip_set_timeout_get(tdata->timeout))) || | |
161 | (flags && | |
162 | nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags)))) | |
163 | goto nla_put_failure; | |
41d22f7b JK |
164 | return 0; |
165 | ||
166 | nla_put_failure: | |
167 | return 1; | |
168 | } | |
169 | ||
170 | #define IP_SET_HASH_WITH_PROTO | |
171 | #define IP_SET_HASH_WITH_NETS | |
172 | ||
173 | #define PF 4 | |
174 | #define HOST_MASK 32 | |
175 | #include <linux/netfilter/ipset/ip_set_ahash.h> | |
176 | ||
3d14b171 JK |
177 | static inline void |
178 | hash_ipportnet4_data_next(struct ip_set_hash *h, | |
179 | const struct hash_ipportnet4_elem *d) | |
180 | { | |
6e27c9b4 JK |
181 | h->next.ip = d->ip; |
182 | h->next.port = d->port; | |
183 | h->next.ip2 = d->ip2; | |
3d14b171 JK |
184 | } |
185 | ||
41d22f7b JK |
186 | static int |
187 | hash_ipportnet4_kadt(struct ip_set *set, const struct sk_buff *skb, | |
b66554cf | 188 | const struct xt_action_param *par, |
ac8cc925 | 189 | enum ipset_adt adt, const struct ip_set_adt_opt *opt) |
41d22f7b JK |
190 | { |
191 | const struct ip_set_hash *h = set->data; | |
192 | ipset_adtfn adtfn = set->variant->adt[adt]; | |
9b03a5ef | 193 | struct hash_ipportnet4_elem data = { |
2a7cef2a | 194 | .cidr = h->nets[0].cidr ? h->nets[0].cidr - 1 : HOST_MASK - 1 |
9b03a5ef | 195 | }; |
41d22f7b | 196 | |
41d22f7b | 197 | if (adt == IPSET_TEST) |
2a7cef2a | 198 | data.cidr = HOST_MASK - 1; |
41d22f7b | 199 | |
ac8cc925 | 200 | if (!ip_set_get_ip4_port(skb, opt->flags & IPSET_DIM_TWO_SRC, |
41d22f7b JK |
201 | &data.port, &data.proto)) |
202 | return -EINVAL; | |
203 | ||
ac8cc925 JK |
204 | ip4addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &data.ip); |
205 | ip4addrptr(skb, opt->flags & IPSET_DIM_THREE_SRC, &data.ip2); | |
2a7cef2a | 206 | data.ip2 &= ip_set_netmask(data.cidr + 1); |
41d22f7b | 207 | |
ac8cc925 | 208 | return adtfn(set, &data, opt_timeout(opt, h), opt->cmdflags); |
41d22f7b JK |
209 | } |
210 | ||
211 | static int | |
212 | hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[], | |
3d14b171 | 213 | enum ipset_adt adt, u32 *lineno, u32 flags, bool retried) |
41d22f7b JK |
214 | { |
215 | const struct ip_set_hash *h = set->data; | |
216 | ipset_adtfn adtfn = set->variant->adt[adt]; | |
2a7cef2a | 217 | struct hash_ipportnet4_elem data = { .cidr = HOST_MASK - 1 }; |
648ae8e5 | 218 | u32 ip, ip_to = 0, p = 0, port, port_to; |
d0d9e0a5 | 219 | u32 ip2_from = 0, ip2_to, ip2_last, ip2; |
41d22f7b | 220 | u32 timeout = h->timeout; |
5e0c1eb7 | 221 | bool with_ports = false; |
2a7cef2a | 222 | u8 cidr; |
41d22f7b JK |
223 | int ret; |
224 | ||
225 | if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] || | |
226 | !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) || | |
227 | !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) || | |
2a7cef2a JK |
228 | !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) || |
229 | !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS))) | |
41d22f7b JK |
230 | return -IPSET_ERR_PROTOCOL; |
231 | ||
232 | if (tb[IPSET_ATTR_LINENO]) | |
233 | *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]); | |
234 | ||
d0d9e0a5 | 235 | ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip); |
41d22f7b JK |
236 | if (ret) |
237 | return ret; | |
238 | ||
d0d9e0a5 | 239 | ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2], &ip2_from); |
41d22f7b JK |
240 | if (ret) |
241 | return ret; | |
242 | ||
d0d9e0a5 | 243 | if (tb[IPSET_ATTR_CIDR2]) { |
2a7cef2a JK |
244 | cidr = nla_get_u8(tb[IPSET_ATTR_CIDR2]); |
245 | if (!cidr || cidr > HOST_MASK) | |
d0d9e0a5 | 246 | return -IPSET_ERR_INVALID_CIDR; |
2a7cef2a | 247 | data.cidr = cidr - 1; |
d0d9e0a5 | 248 | } |
41d22f7b JK |
249 | |
250 | if (tb[IPSET_ATTR_PORT]) | |
251 | data.port = nla_get_be16(tb[IPSET_ATTR_PORT]); | |
252 | else | |
253 | return -IPSET_ERR_PROTOCOL; | |
254 | ||
255 | if (tb[IPSET_ATTR_PROTO]) { | |
256 | data.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]); | |
5e0c1eb7 | 257 | with_ports = ip_set_proto_with_ports(data.proto); |
41d22f7b JK |
258 | |
259 | if (data.proto == 0) | |
260 | return -IPSET_ERR_INVALID_PROTO; | |
261 | } else | |
262 | return -IPSET_ERR_MISSING_PROTO; | |
263 | ||
5e0c1eb7 | 264 | if (!(with_ports || data.proto == IPPROTO_ICMP)) |
41d22f7b | 265 | data.port = 0; |
41d22f7b JK |
266 | |
267 | if (tb[IPSET_ATTR_TIMEOUT]) { | |
268 | if (!with_timeout(h->timeout)) | |
269 | return -IPSET_ERR_TIMEOUT; | |
270 | timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]); | |
271 | } | |
272 | ||
2a7cef2a JK |
273 | if (tb[IPSET_ATTR_CADT_FLAGS] && adt == IPSET_ADD) { |
274 | u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]); | |
275 | if (cadt_flags & IPSET_FLAG_NOMATCH) | |
276 | flags |= (cadt_flags << 16); | |
277 | } | |
278 | ||
d0d9e0a5 | 279 | with_ports = with_ports && tb[IPSET_ATTR_PORT_TO]; |
41d22f7b | 280 | if (adt == IPSET_TEST || |
d0d9e0a5 JK |
281 | !(tb[IPSET_ATTR_CIDR] || tb[IPSET_ATTR_IP_TO] || with_ports || |
282 | tb[IPSET_ATTR_IP2_TO])) { | |
283 | data.ip = htonl(ip); | |
2a7cef2a | 284 | data.ip2 = htonl(ip2_from & ip_set_hostmask(data.cidr + 1)); |
5416219e | 285 | ret = adtfn(set, &data, timeout, flags); |
41d22f7b JK |
286 | return ip_set_eexist(ret, flags) ? 0 : ret; |
287 | } | |
288 | ||
41d22f7b JK |
289 | if (tb[IPSET_ATTR_IP_TO]) { |
290 | ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to); | |
291 | if (ret) | |
292 | return ret; | |
293 | if (ip > ip_to) | |
294 | swap(ip, ip_to); | |
295 | } else if (tb[IPSET_ATTR_CIDR]) { | |
296 | u8 cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]); | |
297 | ||
b9fed748 | 298 | if (!cidr || cidr > 32) |
41d22f7b | 299 | return -IPSET_ERR_INVALID_CIDR; |
e6146e86 | 300 | ip_set_mask_from_to(ip, ip_to, cidr); |
d0d9e0a5 | 301 | } |
41d22f7b | 302 | |
5e0c1eb7 | 303 | port_to = port = ntohs(data.port); |
d0d9e0a5 | 304 | if (tb[IPSET_ATTR_PORT_TO]) { |
41d22f7b JK |
305 | port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]); |
306 | if (port > port_to) | |
307 | swap(port, port_to); | |
5e0c1eb7 | 308 | } |
d0d9e0a5 JK |
309 | if (tb[IPSET_ATTR_IP2_TO]) { |
310 | ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2_TO], &ip2_to); | |
311 | if (ret) | |
312 | return ret; | |
313 | if (ip2_from > ip2_to) | |
314 | swap(ip2_from, ip2_to); | |
315 | if (ip2_from + UINT_MAX == ip2_to) | |
316 | return -IPSET_ERR_HASH_RANGE; | |
317 | } else { | |
2a7cef2a | 318 | ip_set_mask_from_to(ip2_from, ip2_to, data.cidr + 1); |
d0d9e0a5 | 319 | } |
41d22f7b | 320 | |
3d14b171 | 321 | if (retried) |
6e27c9b4 | 322 | ip = ntohl(h->next.ip); |
3d14b171 | 323 | for (; !before(ip_to, ip); ip++) { |
d0d9e0a5 | 324 | data.ip = htonl(ip); |
6e27c9b4 JK |
325 | p = retried && ip == ntohl(h->next.ip) ? ntohs(h->next.port) |
326 | : port; | |
3d14b171 | 327 | for (; p <= port_to; p++) { |
41d22f7b | 328 | data.port = htons(p); |
6e27c9b4 JK |
329 | ip2 = retried |
330 | && ip == ntohl(h->next.ip) | |
331 | && p == ntohs(h->next.port) | |
332 | ? ntohl(h->next.ip2) : ip2_from; | |
d0d9e0a5 JK |
333 | while (!after(ip2, ip2_to)) { |
334 | data.ip2 = htonl(ip2); | |
335 | ip2_last = ip_set_range_to_cidr(ip2, ip2_to, | |
2a7cef2a JK |
336 | &cidr); |
337 | data.cidr = cidr - 1; | |
d0d9e0a5 JK |
338 | ret = adtfn(set, &data, timeout, flags); |
339 | ||
340 | if (ret && !ip_set_eexist(ret, flags)) | |
341 | return ret; | |
342 | else | |
343 | ret = 0; | |
344 | ip2 = ip2_last + 1; | |
345 | } | |
41d22f7b | 346 | } |
3d14b171 | 347 | } |
41d22f7b JK |
348 | return ret; |
349 | } | |
350 | ||
351 | static bool | |
352 | hash_ipportnet_same_set(const struct ip_set *a, const struct ip_set *b) | |
353 | { | |
354 | const struct ip_set_hash *x = a->data; | |
355 | const struct ip_set_hash *y = b->data; | |
356 | ||
357 | /* Resizing changes htable_bits, so we ignore it */ | |
358 | return x->maxelem == y->maxelem && | |
359 | x->timeout == y->timeout; | |
360 | } | |
361 | ||
362 | /* The type variant functions: IPv6 */ | |
363 | ||
364 | struct hash_ipportnet6_elem { | |
365 | union nf_inet_addr ip; | |
366 | union nf_inet_addr ip2; | |
367 | __be16 port; | |
2a7cef2a JK |
368 | u8 cidr:7; |
369 | u8 nomatch:1; | |
41d22f7b JK |
370 | u8 proto; |
371 | }; | |
372 | ||
373 | struct hash_ipportnet6_telem { | |
374 | union nf_inet_addr ip; | |
375 | union nf_inet_addr ip2; | |
376 | __be16 port; | |
2a7cef2a JK |
377 | u8 cidr:7; |
378 | u8 nomatch:1; | |
41d22f7b JK |
379 | u8 proto; |
380 | unsigned long timeout; | |
381 | }; | |
382 | ||
383 | static inline bool | |
384 | hash_ipportnet6_data_equal(const struct hash_ipportnet6_elem *ip1, | |
89dc79b7 JK |
385 | const struct hash_ipportnet6_elem *ip2, |
386 | u32 *multi) | |
41d22f7b JK |
387 | { |
388 | return ipv6_addr_cmp(&ip1->ip.in6, &ip2->ip.in6) == 0 && | |
389 | ipv6_addr_cmp(&ip1->ip2.in6, &ip2->ip2.in6) == 0 && | |
390 | ip1->cidr == ip2->cidr && | |
391 | ip1->port == ip2->port && | |
392 | ip1->proto == ip2->proto; | |
393 | } | |
394 | ||
395 | static inline bool | |
396 | hash_ipportnet6_data_isnull(const struct hash_ipportnet6_elem *elem) | |
397 | { | |
398 | return elem->proto == 0; | |
399 | } | |
400 | ||
401 | static inline void | |
402 | hash_ipportnet6_data_copy(struct hash_ipportnet6_elem *dst, | |
403 | const struct hash_ipportnet6_elem *src) | |
404 | { | |
405 | memcpy(dst, src, sizeof(*dst)); | |
406 | } | |
407 | ||
2a7cef2a JK |
408 | static inline void |
409 | hash_ipportnet6_data_flags(struct hash_ipportnet6_elem *dst, u32 flags) | |
410 | { | |
411 | dst->nomatch = !!(flags & IPSET_FLAG_NOMATCH); | |
412 | } | |
413 | ||
3e0304a5 | 414 | static inline int |
2a7cef2a JK |
415 | hash_ipportnet6_data_match(const struct hash_ipportnet6_elem *elem) |
416 | { | |
3e0304a5 | 417 | return elem->nomatch ? -ENOTEMPTY : 1; |
2a7cef2a JK |
418 | } |
419 | ||
41d22f7b JK |
420 | static inline void |
421 | hash_ipportnet6_data_zero_out(struct hash_ipportnet6_elem *elem) | |
422 | { | |
423 | elem->proto = 0; | |
424 | } | |
425 | ||
426 | static inline void | |
427 | ip6_netmask(union nf_inet_addr *ip, u8 prefix) | |
428 | { | |
429 | ip->ip6[0] &= ip_set_netmask6(prefix)[0]; | |
430 | ip->ip6[1] &= ip_set_netmask6(prefix)[1]; | |
431 | ip->ip6[2] &= ip_set_netmask6(prefix)[2]; | |
432 | ip->ip6[3] &= ip_set_netmask6(prefix)[3]; | |
433 | } | |
434 | ||
435 | static inline void | |
436 | hash_ipportnet6_data_netmask(struct hash_ipportnet6_elem *elem, u8 cidr) | |
437 | { | |
438 | ip6_netmask(&elem->ip2, cidr); | |
2a7cef2a | 439 | elem->cidr = cidr - 1; |
41d22f7b JK |
440 | } |
441 | ||
442 | static bool | |
443 | hash_ipportnet6_data_list(struct sk_buff *skb, | |
444 | const struct hash_ipportnet6_elem *data) | |
445 | { | |
2a7cef2a JK |
446 | u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0; |
447 | ||
7cf7899d DM |
448 | if (nla_put_ipaddr6(skb, IPSET_ATTR_IP, &data->ip.in6) || |
449 | nla_put_ipaddr6(skb, IPSET_ATTR_IP2, &data->ip2.in6) || | |
450 | nla_put_net16(skb, IPSET_ATTR_PORT, data->port) || | |
451 | nla_put_u8(skb, IPSET_ATTR_CIDR2, data->cidr + 1) || | |
452 | nla_put_u8(skb, IPSET_ATTR_PROTO, data->proto) || | |
453 | (flags && | |
454 | nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags)))) | |
455 | goto nla_put_failure; | |
41d22f7b JK |
456 | return 0; |
457 | ||
458 | nla_put_failure: | |
459 | return 1; | |
460 | } | |
461 | ||
462 | static bool | |
463 | hash_ipportnet6_data_tlist(struct sk_buff *skb, | |
464 | const struct hash_ipportnet6_elem *data) | |
465 | { | |
466 | const struct hash_ipportnet6_telem *e = | |
467 | (const struct hash_ipportnet6_telem *)data; | |
2a7cef2a | 468 | u32 flags = data->nomatch ? IPSET_FLAG_NOMATCH : 0; |
41d22f7b | 469 | |
7cf7899d DM |
470 | if (nla_put_ipaddr6(skb, IPSET_ATTR_IP, &e->ip.in6) || |
471 | nla_put_ipaddr6(skb, IPSET_ATTR_IP2, &data->ip2.in6) || | |
472 | nla_put_net16(skb, IPSET_ATTR_PORT, data->port) || | |
473 | nla_put_u8(skb, IPSET_ATTR_CIDR2, data->cidr + 1) || | |
474 | nla_put_u8(skb, IPSET_ATTR_PROTO, data->proto) || | |
475 | nla_put_net32(skb, IPSET_ATTR_TIMEOUT, | |
476 | htonl(ip_set_timeout_get(e->timeout))) || | |
477 | (flags && | |
478 | nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, htonl(flags)))) | |
479 | goto nla_put_failure; | |
41d22f7b JK |
480 | return 0; |
481 | ||
482 | nla_put_failure: | |
483 | return 1; | |
484 | } | |
485 | ||
486 | #undef PF | |
487 | #undef HOST_MASK | |
488 | ||
489 | #define PF 6 | |
490 | #define HOST_MASK 128 | |
491 | #include <linux/netfilter/ipset/ip_set_ahash.h> | |
492 | ||
3d14b171 JK |
493 | static inline void |
494 | hash_ipportnet6_data_next(struct ip_set_hash *h, | |
495 | const struct hash_ipportnet6_elem *d) | |
496 | { | |
6e27c9b4 | 497 | h->next.port = d->port; |
3d14b171 JK |
498 | } |
499 | ||
41d22f7b JK |
500 | static int |
501 | hash_ipportnet6_kadt(struct ip_set *set, const struct sk_buff *skb, | |
b66554cf | 502 | const struct xt_action_param *par, |
ac8cc925 | 503 | enum ipset_adt adt, const struct ip_set_adt_opt *opt) |
41d22f7b JK |
504 | { |
505 | const struct ip_set_hash *h = set->data; | |
506 | ipset_adtfn adtfn = set->variant->adt[adt]; | |
9b03a5ef | 507 | struct hash_ipportnet6_elem data = { |
2a7cef2a | 508 | .cidr = h->nets[0].cidr ? h->nets[0].cidr - 1 : HOST_MASK - 1 |
9b03a5ef | 509 | }; |
41d22f7b | 510 | |
41d22f7b | 511 | if (adt == IPSET_TEST) |
2a7cef2a | 512 | data.cidr = HOST_MASK - 1; |
41d22f7b | 513 | |
ac8cc925 | 514 | if (!ip_set_get_ip6_port(skb, opt->flags & IPSET_DIM_TWO_SRC, |
41d22f7b JK |
515 | &data.port, &data.proto)) |
516 | return -EINVAL; | |
517 | ||
ac8cc925 JK |
518 | ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &data.ip.in6); |
519 | ip6addrptr(skb, opt->flags & IPSET_DIM_THREE_SRC, &data.ip2.in6); | |
2a7cef2a | 520 | ip6_netmask(&data.ip2, data.cidr + 1); |
41d22f7b | 521 | |
ac8cc925 | 522 | return adtfn(set, &data, opt_timeout(opt, h), opt->cmdflags); |
41d22f7b JK |
523 | } |
524 | ||
525 | static int | |
526 | hash_ipportnet6_uadt(struct ip_set *set, struct nlattr *tb[], | |
3d14b171 | 527 | enum ipset_adt adt, u32 *lineno, u32 flags, bool retried) |
41d22f7b JK |
528 | { |
529 | const struct ip_set_hash *h = set->data; | |
530 | ipset_adtfn adtfn = set->variant->adt[adt]; | |
2a7cef2a | 531 | struct hash_ipportnet6_elem data = { .cidr = HOST_MASK - 1 }; |
41d22f7b JK |
532 | u32 port, port_to; |
533 | u32 timeout = h->timeout; | |
5e0c1eb7 | 534 | bool with_ports = false; |
2a7cef2a | 535 | u8 cidr; |
41d22f7b JK |
536 | int ret; |
537 | ||
538 | if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] || | |
539 | !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) || | |
540 | !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) || | |
541 | !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) || | |
2a7cef2a | 542 | !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS) || |
41d22f7b JK |
543 | tb[IPSET_ATTR_IP_TO] || |
544 | tb[IPSET_ATTR_CIDR])) | |
545 | return -IPSET_ERR_PROTOCOL; | |
d0d9e0a5 JK |
546 | if (unlikely(tb[IPSET_ATTR_IP_TO])) |
547 | return -IPSET_ERR_HASH_RANGE_UNSUPPORTED; | |
41d22f7b JK |
548 | |
549 | if (tb[IPSET_ATTR_LINENO]) | |
550 | *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]); | |
551 | ||
552 | ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &data.ip); | |
553 | if (ret) | |
554 | return ret; | |
555 | ||
556 | ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP2], &data.ip2); | |
557 | if (ret) | |
558 | return ret; | |
559 | ||
2a7cef2a JK |
560 | if (tb[IPSET_ATTR_CIDR2]) { |
561 | cidr = nla_get_u8(tb[IPSET_ATTR_CIDR2]); | |
562 | if (!cidr || cidr > HOST_MASK) | |
563 | return -IPSET_ERR_INVALID_CIDR; | |
564 | data.cidr = cidr - 1; | |
565 | } | |
41d22f7b | 566 | |
2a7cef2a | 567 | ip6_netmask(&data.ip2, data.cidr + 1); |
41d22f7b JK |
568 | |
569 | if (tb[IPSET_ATTR_PORT]) | |
570 | data.port = nla_get_be16(tb[IPSET_ATTR_PORT]); | |
571 | else | |
572 | return -IPSET_ERR_PROTOCOL; | |
573 | ||
574 | if (tb[IPSET_ATTR_PROTO]) { | |
575 | data.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]); | |
5e0c1eb7 | 576 | with_ports = ip_set_proto_with_ports(data.proto); |
41d22f7b JK |
577 | |
578 | if (data.proto == 0) | |
579 | return -IPSET_ERR_INVALID_PROTO; | |
580 | } else | |
581 | return -IPSET_ERR_MISSING_PROTO; | |
582 | ||
5e0c1eb7 | 583 | if (!(with_ports || data.proto == IPPROTO_ICMPV6)) |
41d22f7b | 584 | data.port = 0; |
41d22f7b JK |
585 | |
586 | if (tb[IPSET_ATTR_TIMEOUT]) { | |
587 | if (!with_timeout(h->timeout)) | |
588 | return -IPSET_ERR_TIMEOUT; | |
589 | timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]); | |
590 | } | |
591 | ||
2a7cef2a JK |
592 | if (tb[IPSET_ATTR_CADT_FLAGS] && adt == IPSET_ADD) { |
593 | u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]); | |
594 | if (cadt_flags & IPSET_FLAG_NOMATCH) | |
595 | flags |= (cadt_flags << 16); | |
596 | } | |
597 | ||
5e0c1eb7 | 598 | if (adt == IPSET_TEST || !with_ports || !tb[IPSET_ATTR_PORT_TO]) { |
5416219e | 599 | ret = adtfn(set, &data, timeout, flags); |
41d22f7b JK |
600 | return ip_set_eexist(ret, flags) ? 0 : ret; |
601 | } | |
602 | ||
603 | port = ntohs(data.port); | |
604 | port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]); | |
605 | if (port > port_to) | |
606 | swap(port, port_to); | |
607 | ||
3d14b171 | 608 | if (retried) |
6e27c9b4 | 609 | port = ntohs(h->next.port); |
41d22f7b JK |
610 | for (; port <= port_to; port++) { |
611 | data.port = htons(port); | |
5416219e | 612 | ret = adtfn(set, &data, timeout, flags); |
41d22f7b JK |
613 | |
614 | if (ret && !ip_set_eexist(ret, flags)) | |
615 | return ret; | |
616 | else | |
617 | ret = 0; | |
618 | } | |
619 | return ret; | |
620 | } | |
621 | ||
622 | /* Create hash:ip type of sets */ | |
623 | ||
624 | static int | |
625 | hash_ipportnet_create(struct ip_set *set, struct nlattr *tb[], u32 flags) | |
626 | { | |
627 | struct ip_set_hash *h; | |
628 | u32 hashsize = IPSET_DEFAULT_HASHSIZE, maxelem = IPSET_DEFAULT_MAXELEM; | |
629 | u8 hbits; | |
26a5d3cc | 630 | size_t hsize; |
41d22f7b | 631 | |
c15f1c83 | 632 | if (!(set->family == NFPROTO_IPV4 || set->family == NFPROTO_IPV6)) |
41d22f7b JK |
633 | return -IPSET_ERR_INVALID_FAMILY; |
634 | ||
635 | if (unlikely(!ip_set_optattr_netorder(tb, IPSET_ATTR_HASHSIZE) || | |
636 | !ip_set_optattr_netorder(tb, IPSET_ATTR_MAXELEM) || | |
637 | !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT))) | |
638 | return -IPSET_ERR_PROTOCOL; | |
639 | ||
640 | if (tb[IPSET_ATTR_HASHSIZE]) { | |
641 | hashsize = ip_set_get_h32(tb[IPSET_ATTR_HASHSIZE]); | |
642 | if (hashsize < IPSET_MIMINAL_HASHSIZE) | |
643 | hashsize = IPSET_MIMINAL_HASHSIZE; | |
644 | } | |
645 | ||
646 | if (tb[IPSET_ATTR_MAXELEM]) | |
647 | maxelem = ip_set_get_h32(tb[IPSET_ATTR_MAXELEM]); | |
648 | ||
649 | h = kzalloc(sizeof(*h) | |
650 | + sizeof(struct ip_set_hash_nets) | |
c15f1c83 | 651 | * (set->family == NFPROTO_IPV4 ? 32 : 128), GFP_KERNEL); |
41d22f7b JK |
652 | if (!h) |
653 | return -ENOMEM; | |
654 | ||
655 | h->maxelem = maxelem; | |
656 | get_random_bytes(&h->initval, sizeof(h->initval)); | |
657 | h->timeout = IPSET_NO_TIMEOUT; | |
658 | ||
659 | hbits = htable_bits(hashsize); | |
26a5d3cc JK |
660 | hsize = htable_size(hbits); |
661 | if (hsize == 0) { | |
662 | kfree(h); | |
663 | return -ENOMEM; | |
664 | } | |
665 | h->table = ip_set_alloc(hsize); | |
41d22f7b JK |
666 | if (!h->table) { |
667 | kfree(h); | |
668 | return -ENOMEM; | |
669 | } | |
670 | h->table->htable_bits = hbits; | |
671 | ||
672 | set->data = h; | |
673 | ||
674 | if (tb[IPSET_ATTR_TIMEOUT]) { | |
675 | h->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]); | |
676 | ||
c15f1c83 | 677 | set->variant = set->family == NFPROTO_IPV4 |
41d22f7b JK |
678 | ? &hash_ipportnet4_tvariant |
679 | : &hash_ipportnet6_tvariant; | |
680 | ||
c15f1c83 | 681 | if (set->family == NFPROTO_IPV4) |
41d22f7b JK |
682 | hash_ipportnet4_gc_init(set); |
683 | else | |
684 | hash_ipportnet6_gc_init(set); | |
685 | } else { | |
c15f1c83 | 686 | set->variant = set->family == NFPROTO_IPV4 |
41d22f7b JK |
687 | ? &hash_ipportnet4_variant : &hash_ipportnet6_variant; |
688 | } | |
689 | ||
690 | pr_debug("create %s hashsize %u (%u) maxelem %u: %p(%p)\n", | |
691 | set->name, jhash_size(h->table->htable_bits), | |
692 | h->table->htable_bits, h->maxelem, set->data, h->table); | |
693 | ||
694 | return 0; | |
695 | } | |
696 | ||
697 | static struct ip_set_type hash_ipportnet_type __read_mostly = { | |
698 | .name = "hash:ip,port,net", | |
699 | .protocol = IPSET_PROTOCOL, | |
3e0304a5 JK |
700 | .features = IPSET_TYPE_IP | IPSET_TYPE_PORT | IPSET_TYPE_IP2 | |
701 | IPSET_TYPE_NOMATCH, | |
41d22f7b | 702 | .dimension = IPSET_DIM_THREE, |
c15f1c83 | 703 | .family = NFPROTO_UNSPEC, |
10111a6e JK |
704 | .revision_min = REVISION_MIN, |
705 | .revision_max = REVISION_MAX, | |
41d22f7b JK |
706 | .create = hash_ipportnet_create, |
707 | .create_policy = { | |
708 | [IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 }, | |
709 | [IPSET_ATTR_MAXELEM] = { .type = NLA_U32 }, | |
710 | [IPSET_ATTR_PROBES] = { .type = NLA_U8 }, | |
711 | [IPSET_ATTR_RESIZE] = { .type = NLA_U8 }, | |
712 | [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 }, | |
713 | }, | |
714 | .adt_policy = { | |
715 | [IPSET_ATTR_IP] = { .type = NLA_NESTED }, | |
716 | [IPSET_ATTR_IP_TO] = { .type = NLA_NESTED }, | |
717 | [IPSET_ATTR_IP2] = { .type = NLA_NESTED }, | |
d0d9e0a5 | 718 | [IPSET_ATTR_IP2_TO] = { .type = NLA_NESTED }, |
41d22f7b JK |
719 | [IPSET_ATTR_PORT] = { .type = NLA_U16 }, |
720 | [IPSET_ATTR_PORT_TO] = { .type = NLA_U16 }, | |
721 | [IPSET_ATTR_CIDR] = { .type = NLA_U8 }, | |
722 | [IPSET_ATTR_CIDR2] = { .type = NLA_U8 }, | |
723 | [IPSET_ATTR_PROTO] = { .type = NLA_U8 }, | |
2a7cef2a | 724 | [IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 }, |
41d22f7b JK |
725 | [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 }, |
726 | [IPSET_ATTR_LINENO] = { .type = NLA_U32 }, | |
727 | }, | |
728 | .me = THIS_MODULE, | |
729 | }; | |
730 | ||
731 | static int __init | |
732 | hash_ipportnet_init(void) | |
733 | { | |
734 | return ip_set_type_register(&hash_ipportnet_type); | |
735 | } | |
736 | ||
737 | static void __exit | |
738 | hash_ipportnet_fini(void) | |
739 | { | |
740 | ip_set_type_unregister(&hash_ipportnet_type); | |
741 | } | |
742 | ||
743 | module_init(hash_ipportnet_init); | |
744 | module_exit(hash_ipportnet_fini); |