Commit | Line | Data |
---|---|---|
d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
a7b4f989 JK |
2 | /* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu> |
3 | * Patrick Schaaf <bof@bof.de> | |
4 | * Martin Josefsson <gandalf@wlug.westbo.se> | |
fe03d474 | 5 | * Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@netfilter.org> |
a7b4f989 | 6 | */ |
a8201414 DH |
7 | #ifndef _IP_SET_H |
8 | #define _IP_SET_H | |
a7b4f989 | 9 | |
ae8ded1c JE |
10 | #include <linux/ip.h> |
11 | #include <linux/ipv6.h> | |
12 | #include <linux/netlink.h> | |
13 | #include <linux/netfilter.h> | |
14 | #include <linux/netfilter/x_tables.h> | |
10111a6e | 15 | #include <linux/stringify.h> |
ae8ded1c JE |
16 | #include <linux/vmalloc.h> |
17 | #include <net/netlink.h> | |
a8201414 | 18 | #include <uapi/linux/netfilter/ipset/ip_set.h> |
ae8ded1c | 19 | |
10111a6e JK |
20 | #define _IP_SET_MODULE_DESC(a, b, c) \ |
21 | MODULE_DESCRIPTION(a " type of IP sets, revisions " b "-" c) | |
22 | #define IP_SET_MODULE_DESC(a, b, c) \ | |
23 | _IP_SET_MODULE_DESC(a, __stringify(b), __stringify(c)) | |
24 | ||
a7b4f989 JK |
25 | /* Set features */ |
26 | enum ip_set_feature { | |
27 | IPSET_TYPE_IP_FLAG = 0, | |
28 | IPSET_TYPE_IP = (1 << IPSET_TYPE_IP_FLAG), | |
29 | IPSET_TYPE_PORT_FLAG = 1, | |
30 | IPSET_TYPE_PORT = (1 << IPSET_TYPE_PORT_FLAG), | |
31 | IPSET_TYPE_MAC_FLAG = 2, | |
32 | IPSET_TYPE_MAC = (1 << IPSET_TYPE_MAC_FLAG), | |
33 | IPSET_TYPE_IP2_FLAG = 3, | |
34 | IPSET_TYPE_IP2 = (1 << IPSET_TYPE_IP2_FLAG), | |
35 | IPSET_TYPE_NAME_FLAG = 4, | |
36 | IPSET_TYPE_NAME = (1 << IPSET_TYPE_NAME_FLAG), | |
e385357a JK |
37 | IPSET_TYPE_IFACE_FLAG = 5, |
38 | IPSET_TYPE_IFACE = (1 << IPSET_TYPE_IFACE_FLAG), | |
3b02b56c VD |
39 | IPSET_TYPE_MARK_FLAG = 6, |
40 | IPSET_TYPE_MARK = (1 << IPSET_TYPE_MARK_FLAG), | |
41 | IPSET_TYPE_NOMATCH_FLAG = 7, | |
3e0304a5 | 42 | IPSET_TYPE_NOMATCH = (1 << IPSET_TYPE_NOMATCH_FLAG), |
a7b4f989 JK |
43 | /* Strictly speaking not a feature, but a flag for dumping: |
44 | * this settype must be dumped last */ | |
3b02b56c | 45 | IPSET_DUMP_LAST_FLAG = 8, |
a7b4f989 JK |
46 | IPSET_DUMP_LAST = (1 << IPSET_DUMP_LAST_FLAG), |
47 | }; | |
48 | ||
075e64c0 JK |
49 | /* Set extensions */ |
50 | enum ip_set_extension { | |
40cd63bf | 51 | IPSET_EXT_BIT_TIMEOUT = 0, |
075e64c0 | 52 | IPSET_EXT_TIMEOUT = (1 << IPSET_EXT_BIT_TIMEOUT), |
40cd63bf | 53 | IPSET_EXT_BIT_COUNTER = 1, |
34d666d4 | 54 | IPSET_EXT_COUNTER = (1 << IPSET_EXT_BIT_COUNTER), |
68b63f08 OS |
55 | IPSET_EXT_BIT_COMMENT = 2, |
56 | IPSET_EXT_COMMENT = (1 << IPSET_EXT_BIT_COMMENT), | |
0e9871e3 AD |
57 | IPSET_EXT_BIT_SKBINFO = 3, |
58 | IPSET_EXT_SKBINFO = (1 << IPSET_EXT_BIT_SKBINFO), | |
40cd63bf JK |
59 | /* Mark set with an extension which needs to call destroy */ |
60 | IPSET_EXT_BIT_DESTROY = 7, | |
61 | IPSET_EXT_DESTROY = (1 << IPSET_EXT_BIT_DESTROY), | |
075e64c0 JK |
62 | }; |
63 | ||
075e64c0 | 64 | #define SET_WITH_TIMEOUT(s) ((s)->extensions & IPSET_EXT_TIMEOUT) |
34d666d4 | 65 | #define SET_WITH_COUNTER(s) ((s)->extensions & IPSET_EXT_COUNTER) |
68b63f08 | 66 | #define SET_WITH_COMMENT(s) ((s)->extensions & IPSET_EXT_COMMENT) |
0e9871e3 | 67 | #define SET_WITH_SKBINFO(s) ((s)->extensions & IPSET_EXT_SKBINFO) |
07cf8f5a | 68 | #define SET_WITH_FORCEADD(s) ((s)->flags & IPSET_CREATE_FLAG_FORCEADD) |
075e64c0 | 69 | |
f925f705 JK |
70 | /* Extension id, in size order */ |
71 | enum ip_set_ext_id { | |
72 | IPSET_EXT_ID_COUNTER = 0, | |
73 | IPSET_EXT_ID_TIMEOUT, | |
0e9871e3 | 74 | IPSET_EXT_ID_SKBINFO, |
68b63f08 | 75 | IPSET_EXT_ID_COMMENT, |
f925f705 JK |
76 | IPSET_EXT_ID_MAX, |
77 | }; | |
78 | ||
9e41f26a JK |
79 | struct ip_set; |
80 | ||
03c8b234 JK |
81 | /* Extension type */ |
82 | struct ip_set_ext_type { | |
40cd63bf | 83 | /* Destroy extension private data (can be NULL) */ |
9e41f26a | 84 | void (*destroy)(struct ip_set *set, void *ext); |
03c8b234 JK |
85 | enum ip_set_extension type; |
86 | enum ipset_cadt_flags flag; | |
87 | /* Size and minimal alignment */ | |
88 | u8 len; | |
89 | u8 align; | |
90 | }; | |
91 | ||
92 | extern const struct ip_set_ext_type ip_set_extensions[]; | |
93 | ||
ca134ce8 JK |
94 | struct ip_set_counter { |
95 | atomic64_t bytes; | |
96 | atomic64_t packets; | |
97 | }; | |
98 | ||
b57b2d1f JK |
99 | struct ip_set_comment_rcu { |
100 | struct rcu_head rcu; | |
6daf1414 | 101 | char str[]; |
b57b2d1f JK |
102 | }; |
103 | ||
68b63f08 | 104 | struct ip_set_comment { |
b57b2d1f | 105 | struct ip_set_comment_rcu __rcu *c; |
68b63f08 | 106 | }; |
40cd63bf | 107 | |
0e9871e3 AD |
108 | struct ip_set_skbinfo { |
109 | u32 skbmark; | |
110 | u32 skbmarkmask; | |
111 | u32 skbprio; | |
112 | u16 skbqueue; | |
bec810d9 JK |
113 | u16 __pad; |
114 | }; | |
115 | ||
116 | struct ip_set_ext { | |
117 | struct ip_set_skbinfo skbinfo; | |
118 | u64 packets; | |
119 | u64 bytes; | |
120 | char *comment; | |
121 | u32 timeout; | |
4750005a JK |
122 | u8 packets_op; |
123 | u8 bytes_op; | |
f66ee041 | 124 | bool target; |
0e9871e3 AD |
125 | }; |
126 | ||
ca134ce8 | 127 | #define ext_timeout(e, s) \ |
275e2bc0 | 128 | ((unsigned long *)(((void *)(e)) + (s)->offset[IPSET_EXT_ID_TIMEOUT])) |
ca134ce8 | 129 | #define ext_counter(e, s) \ |
275e2bc0 | 130 | ((struct ip_set_counter *)(((void *)(e)) + (s)->offset[IPSET_EXT_ID_COUNTER])) |
68b63f08 | 131 | #define ext_comment(e, s) \ |
275e2bc0 | 132 | ((struct ip_set_comment *)(((void *)(e)) + (s)->offset[IPSET_EXT_ID_COMMENT])) |
0e9871e3 | 133 | #define ext_skbinfo(e, s) \ |
275e2bc0 | 134 | ((struct ip_set_skbinfo *)(((void *)(e)) + (s)->offset[IPSET_EXT_ID_SKBINFO])) |
ca134ce8 | 135 | |
5416219e | 136 | typedef int (*ipset_adtfn)(struct ip_set *set, void *value, |
075e64c0 | 137 | const struct ip_set_ext *ext, |
6e01781d | 138 | struct ip_set_ext *mext, u32 cmdflags); |
a7b4f989 | 139 | |
ac8cc925 JK |
140 | /* Kernel API function options */ |
141 | struct ip_set_adt_opt { | |
142 | u8 family; /* Actual protocol family */ | |
143 | u8 dim; /* Dimension of match/target */ | |
144 | u8 flags; /* Direction and negation flags */ | |
145 | u32 cmdflags; /* Command-like flags */ | |
075e64c0 | 146 | struct ip_set_ext ext; /* Extensions */ |
ac8cc925 JK |
147 | }; |
148 | ||
a7b4f989 JK |
149 | /* Set type, variant-specific part */ |
150 | struct ip_set_type_variant { | |
151 | /* Kernelspace: test/add/del entries | |
152 | * returns negative error code, | |
153 | * zero for no match/success to add/delete | |
154 | * positive for matching element */ | |
3ace95c0 | 155 | int (*kadt)(struct ip_set *set, const struct sk_buff *skb, |
b66554cf | 156 | const struct xt_action_param *par, |
075e64c0 | 157 | enum ipset_adt adt, struct ip_set_adt_opt *opt); |
a7b4f989 JK |
158 | |
159 | /* Userspace: test/add/del entries | |
160 | * returns negative error code, | |
161 | * zero for no match/success to add/delete | |
162 | * positive for matching element */ | |
163 | int (*uadt)(struct ip_set *set, struct nlattr *tb[], | |
3d14b171 | 164 | enum ipset_adt adt, u32 *lineno, u32 flags, bool retried); |
a7b4f989 JK |
165 | |
166 | /* Low level add/del/test functions */ | |
167 | ipset_adtfn adt[IPSET_ADT_MAX]; | |
168 | ||
169 | /* When adding entries and set is full, try to resize the set */ | |
170 | int (*resize)(struct ip_set *set, bool retried); | |
171 | /* Destroy the set */ | |
172 | void (*destroy)(struct ip_set *set); | |
173 | /* Flush the elements */ | |
174 | void (*flush)(struct ip_set *set); | |
175 | /* Expire entries before listing */ | |
176 | void (*expire)(struct ip_set *set); | |
177 | /* List set header data */ | |
178 | int (*head)(struct ip_set *set, struct sk_buff *skb); | |
179 | /* List elements */ | |
180 | int (*list)(const struct ip_set *set, struct sk_buff *skb, | |
181 | struct netlink_callback *cb); | |
c4c99783 JK |
182 | /* Keep listing private when resizing runs parallel */ |
183 | void (*uref)(struct ip_set *set, struct netlink_callback *cb, | |
184 | bool start); | |
a7b4f989 JK |
185 | |
186 | /* Return true if "b" set is the same as "a" | |
187 | * according to the create set parameters */ | |
188 | bool (*same_set)(const struct ip_set *a, const struct ip_set *b); | |
97f7cf1c JK |
189 | /* Cancel ongoing garbage collectors before destroying the set*/ |
190 | void (*cancel_gc)(struct ip_set *set); | |
f66ee041 JK |
191 | /* Region-locking is used */ |
192 | bool region_lock; | |
193 | }; | |
194 | ||
195 | struct ip_set_region { | |
196 | spinlock_t lock; /* Region lock */ | |
197 | size_t ext_size; /* Size of the dynamic extensions */ | |
198 | u32 elements; /* Number of elements vs timeout */ | |
a7b4f989 JK |
199 | }; |
200 | ||
5f7b51bf | 201 | /* Max range where every element is added/deleted in one step */ |
5e29dc36 | 202 | #define IPSET_MAX_RANGE (1<<14) |
5f7b51bf | 203 | |
ccf0a4b7 JK |
204 | /* The max revision number supported by any set type + 1 */ |
205 | #define IPSET_REVISION_MAX 9 | |
206 | ||
a7b4f989 JK |
207 | /* The core set type structure */ |
208 | struct ip_set_type { | |
209 | struct list_head list; | |
210 | ||
211 | /* Typename */ | |
212 | char name[IPSET_MAXNAMELEN]; | |
213 | /* Protocol version */ | |
214 | u8 protocol; | |
a7b4f989 JK |
215 | /* Set type dimension */ |
216 | u8 dimension; | |
c15f1c83 JE |
217 | /* |
218 | * Supported family: may be NFPROTO_UNSPEC for both | |
219 | * NFPROTO_IPV4/NFPROTO_IPV6. | |
220 | */ | |
a7b4f989 | 221 | u8 family; |
f1e00b39 JK |
222 | /* Type revisions */ |
223 | u8 revision_min, revision_max; | |
ccf0a4b7 JK |
224 | /* Revision-specific supported (create) flags */ |
225 | u8 create_flags[IPSET_REVISION_MAX+1]; | |
3b02b56c VD |
226 | /* Set features to control swapping */ |
227 | u16 features; | |
a7b4f989 JK |
228 | |
229 | /* Create set */ | |
1785e8f4 VL |
230 | int (*create)(struct net *net, struct ip_set *set, |
231 | struct nlattr *tb[], u32 flags); | |
a7b4f989 JK |
232 | |
233 | /* Attribute policies */ | |
234 | const struct nla_policy create_policy[IPSET_ATTR_CREATE_MAX + 1]; | |
235 | const struct nla_policy adt_policy[IPSET_ATTR_ADT_MAX + 1]; | |
236 | ||
237 | /* Set this to THIS_MODULE if you are a module, otherwise NULL */ | |
238 | struct module *me; | |
239 | }; | |
240 | ||
241 | /* register and unregister set type */ | |
242 | extern int ip_set_type_register(struct ip_set_type *set_type); | |
243 | extern void ip_set_type_unregister(struct ip_set_type *set_type); | |
244 | ||
245 | /* A generic IP set */ | |
246 | struct ip_set { | |
97f7cf1c JK |
247 | /* For call_cru in destroy */ |
248 | struct rcu_head rcu; | |
a7b4f989 JK |
249 | /* The name of the set */ |
250 | char name[IPSET_MAXNAMELEN]; | |
251 | /* Lock protecting the set data */ | |
b57b2d1f | 252 | spinlock_t lock; |
a7b4f989 | 253 | /* References to the set */ |
2f9f28b2 | 254 | u32 ref; |
596cf3fe VP |
255 | /* References to the set for netlink events like dump, |
256 | * ref can be swapped out by ip_set_swap | |
257 | */ | |
258 | u32 ref_netlink; | |
a7b4f989 JK |
259 | /* The core set type */ |
260 | struct ip_set_type *type; | |
261 | /* The type variant doing the real job */ | |
262 | const struct ip_set_type_variant *variant; | |
263 | /* The actual INET family of the set */ | |
264 | u8 family; | |
f1e00b39 JK |
265 | /* The type revision */ |
266 | u8 revision; | |
075e64c0 JK |
267 | /* Extensions */ |
268 | u8 extensions; | |
af284ece JK |
269 | /* Create flags */ |
270 | u8 flags; | |
ca134ce8 JK |
271 | /* Default timeout value, if enabled */ |
272 | u32 timeout; | |
702b71e7 JK |
273 | /* Number of elements (vs timeout) */ |
274 | u32 elements; | |
9e41f26a JK |
275 | /* Size of the dynamic extensions (vs timeout) */ |
276 | size_t ext_size; | |
ca134ce8 JK |
277 | /* Element data size */ |
278 | size_t dsize; | |
279 | /* Offsets to extensions in elements */ | |
280 | size_t offset[IPSET_EXT_ID_MAX]; | |
a7b4f989 JK |
281 | /* The type specific data */ |
282 | void *data; | |
283 | }; | |
284 | ||
68b63f08 OS |
285 | static inline void |
286 | ip_set_ext_destroy(struct ip_set *set, void *data) | |
287 | { | |
288 | /* Check that the extension is enabled for the set and | |
289 | * call it's destroy function for its extension part in data. | |
290 | */ | |
017f77c0 JS |
291 | if (SET_WITH_COMMENT(set)) { |
292 | struct ip_set_comment *c = ext_comment(data, set); | |
293 | ||
294 | ip_set_extensions[IPSET_EXT_ID_COMMENT].destroy(set, c); | |
295 | } | |
68b63f08 OS |
296 | } |
297 | ||
85639185 | 298 | int ip_set_put_flags(struct sk_buff *skb, struct ip_set *set); |
68b63f08 | 299 | |
93302880 JK |
300 | /* Netlink CB args */ |
301 | enum { | |
c4c99783 | 302 | IPSET_CB_NET = 0, /* net namespace */ |
23c42a40 | 303 | IPSET_CB_PROTO, /* ipset protocol */ |
c4c99783 JK |
304 | IPSET_CB_DUMP, /* dump single set/all sets */ |
305 | IPSET_CB_INDEX, /* set index */ | |
306 | IPSET_CB_PRIVATE, /* set private data */ | |
307 | IPSET_CB_ARG0, /* type specific */ | |
93302880 JK |
308 | }; |
309 | ||
a7b4f989 | 310 | /* register and unregister set references */ |
1785e8f4 VL |
311 | extern ip_set_id_t ip_set_get_byname(struct net *net, |
312 | const char *name, struct ip_set **set); | |
313 | extern void ip_set_put_byindex(struct net *net, ip_set_id_t index); | |
439cd39e | 314 | extern void ip_set_name_byindex(struct net *net, ip_set_id_t index, char *name); |
1785e8f4 VL |
315 | extern ip_set_id_t ip_set_nfnl_get_byindex(struct net *net, ip_set_id_t index); |
316 | extern void ip_set_nfnl_put(struct net *net, ip_set_id_t index); | |
a7b4f989 JK |
317 | |
318 | /* API for iptables set match, and SET target */ | |
ac8cc925 | 319 | |
a7b4f989 | 320 | extern int ip_set_add(ip_set_id_t id, const struct sk_buff *skb, |
b66554cf | 321 | const struct xt_action_param *par, |
075e64c0 | 322 | struct ip_set_adt_opt *opt); |
a7b4f989 | 323 | extern int ip_set_del(ip_set_id_t id, const struct sk_buff *skb, |
b66554cf | 324 | const struct xt_action_param *par, |
075e64c0 | 325 | struct ip_set_adt_opt *opt); |
a7b4f989 | 326 | extern int ip_set_test(ip_set_id_t id, const struct sk_buff *skb, |
b66554cf | 327 | const struct xt_action_param *par, |
075e64c0 | 328 | struct ip_set_adt_opt *opt); |
a7b4f989 JK |
329 | |
330 | /* Utility functions */ | |
15b4d93f | 331 | extern void *ip_set_alloc(size_t size); |
a7b4f989 JK |
332 | extern void ip_set_free(void *members); |
333 | extern int ip_set_get_ipaddr4(struct nlattr *nla, __be32 *ipaddr); | |
334 | extern int ip_set_get_ipaddr6(struct nlattr *nla, union nf_inet_addr *ipaddr); | |
03c8b234 | 335 | extern size_t ip_set_elem_len(struct ip_set *set, struct nlattr *tb[], |
95ad1f4a | 336 | size_t len, size_t align); |
075e64c0 JK |
337 | extern int ip_set_get_extensions(struct ip_set *set, struct nlattr *tb[], |
338 | struct ip_set_ext *ext); | |
837a90ea JK |
339 | extern int ip_set_put_extensions(struct sk_buff *skb, const struct ip_set *set, |
340 | const void *e, bool active); | |
4750005a JK |
341 | extern bool ip_set_match_extensions(struct ip_set *set, |
342 | const struct ip_set_ext *ext, | |
343 | struct ip_set_ext *mext, | |
344 | u32 flags, void *data); | |
a7b4f989 JK |
345 | |
346 | static inline int | |
347 | ip_set_get_hostipaddr4(struct nlattr *nla, u32 *ipaddr) | |
348 | { | |
349 | __be32 ip; | |
350 | int ret = ip_set_get_ipaddr4(nla, &ip); | |
15b4d93f | 351 | |
a7b4f989 JK |
352 | if (ret) |
353 | return ret; | |
354 | *ipaddr = ntohl(ip); | |
355 | return 0; | |
356 | } | |
357 | ||
358 | /* Ignore IPSET_ERR_EXIST errors if asked to do so? */ | |
359 | static inline bool | |
360 | ip_set_eexist(int ret, u32 flags) | |
361 | { | |
362 | return ret == -IPSET_ERR_EXIST && (flags & IPSET_FLAG_EXIST); | |
363 | } | |
364 | ||
43c56e59 JK |
365 | /* Match elements marked with nomatch */ |
366 | static inline bool | |
0f1799ba | 367 | ip_set_enomatch(int ret, u32 flags, enum ipset_adt adt, struct ip_set *set) |
43c56e59 JK |
368 | { |
369 | return adt == IPSET_TEST && | |
0f1799ba JK |
370 | (set->type->features & IPSET_TYPE_NOMATCH) && |
371 | ((flags >> 16) & IPSET_FLAG_NOMATCH) && | |
372 | (ret > 0 || ret == -ENOTEMPTY); | |
43c56e59 JK |
373 | } |
374 | ||
a7b4f989 JK |
375 | /* Check the NLA_F_NET_BYTEORDER flag */ |
376 | static inline bool | |
377 | ip_set_attr_netorder(struct nlattr *tb[], int type) | |
378 | { | |
379 | return tb[type] && (tb[type]->nla_type & NLA_F_NET_BYTEORDER); | |
380 | } | |
381 | ||
382 | static inline bool | |
383 | ip_set_optattr_netorder(struct nlattr *tb[], int type) | |
384 | { | |
385 | return !tb[type] || (tb[type]->nla_type & NLA_F_NET_BYTEORDER); | |
386 | } | |
387 | ||
388 | /* Useful converters */ | |
389 | static inline u32 | |
390 | ip_set_get_h32(const struct nlattr *attr) | |
391 | { | |
392 | return ntohl(nla_get_be32(attr)); | |
393 | } | |
394 | ||
395 | static inline u16 | |
396 | ip_set_get_h16(const struct nlattr *attr) | |
397 | { | |
398 | return ntohs(nla_get_be16(attr)); | |
399 | } | |
400 | ||
7cf7899d DM |
401 | static inline int nla_put_ipaddr4(struct sk_buff *skb, int type, __be32 ipaddr) |
402 | { | |
12ad5f65 | 403 | struct nlattr *__nested = nla_nest_start(skb, type); |
7cf7899d DM |
404 | int ret; |
405 | ||
406 | if (!__nested) | |
407 | return -EMSGSIZE; | |
930345ea | 408 | ret = nla_put_in_addr(skb, IPSET_ATTR_IPADDR_IPV4, ipaddr); |
7cf7899d | 409 | if (!ret) |
12ad5f65 | 410 | nla_nest_end(skb, __nested); |
7cf7899d DM |
411 | return ret; |
412 | } | |
413 | ||
3ace95c0 JK |
414 | static inline int nla_put_ipaddr6(struct sk_buff *skb, int type, |
415 | const struct in6_addr *ipaddrptr) | |
7cf7899d | 416 | { |
12ad5f65 | 417 | struct nlattr *__nested = nla_nest_start(skb, type); |
7cf7899d DM |
418 | int ret; |
419 | ||
420 | if (!__nested) | |
421 | return -EMSGSIZE; | |
930345ea | 422 | ret = nla_put_in6_addr(skb, IPSET_ATTR_IPADDR_IPV6, ipaddrptr); |
7cf7899d | 423 | if (!ret) |
12ad5f65 | 424 | nla_nest_end(skb, __nested); |
7cf7899d DM |
425 | return ret; |
426 | } | |
a7b4f989 JK |
427 | |
428 | /* Get address from skbuff */ | |
429 | static inline __be32 | |
430 | ip4addr(const struct sk_buff *skb, bool src) | |
431 | { | |
432 | return src ? ip_hdr(skb)->saddr : ip_hdr(skb)->daddr; | |
433 | } | |
434 | ||
435 | static inline void | |
436 | ip4addrptr(const struct sk_buff *skb, bool src, __be32 *addr) | |
437 | { | |
438 | *addr = src ? ip_hdr(skb)->saddr : ip_hdr(skb)->daddr; | |
439 | } | |
440 | ||
441 | static inline void | |
442 | ip6addrptr(const struct sk_buff *skb, bool src, struct in6_addr *addr) | |
443 | { | |
444 | memcpy(addr, src ? &ipv6_hdr(skb)->saddr : &ipv6_hdr(skb)->daddr, | |
445 | sizeof(*addr)); | |
446 | } | |
447 | ||
bd96b4c7 JS |
448 | /* How often should the gc be run by default */ |
449 | #define IPSET_GC_TIME (3 * 60) | |
450 | ||
451 | /* Timeout period depending on the timeout value of the given set */ | |
452 | #define IPSET_GC_PERIOD(timeout) \ | |
453 | ((timeout/3) ? min_t(u32, (timeout)/3, IPSET_GC_TIME) : 1) | |
454 | ||
455 | /* Entry is set with no timeout value */ | |
456 | #define IPSET_ELEM_PERMANENT 0 | |
457 | ||
458 | /* Set is defined with timeout support: timeout value may be 0 */ | |
459 | #define IPSET_NO_TIMEOUT UINT_MAX | |
460 | ||
461 | /* Max timeout value, see msecs_to_jiffies() in jiffies.h */ | |
462 | #define IPSET_MAX_TIMEOUT (UINT_MAX >> 1)/MSEC_PER_SEC | |
463 | ||
464 | #define ip_set_adt_opt_timeout(opt, set) \ | |
465 | ((opt)->ext.timeout != IPSET_NO_TIMEOUT ? (opt)->ext.timeout : (set)->timeout) | |
466 | ||
467 | static inline unsigned int | |
468 | ip_set_timeout_uget(struct nlattr *tb) | |
469 | { | |
470 | unsigned int timeout = ip_set_get_h32(tb); | |
471 | ||
472 | /* Normalize to fit into jiffies */ | |
473 | if (timeout > IPSET_MAX_TIMEOUT) | |
474 | timeout = IPSET_MAX_TIMEOUT; | |
475 | ||
476 | return timeout; | |
477 | } | |
478 | ||
479 | static inline bool | |
480 | ip_set_timeout_expired(const unsigned long *t) | |
481 | { | |
482 | return *t != IPSET_ELEM_PERMANENT && time_is_before_jiffies(*t); | |
483 | } | |
484 | ||
485 | static inline void | |
486 | ip_set_timeout_set(unsigned long *timeout, u32 value) | |
487 | { | |
488 | unsigned long t; | |
489 | ||
490 | if (!value) { | |
491 | *timeout = IPSET_ELEM_PERMANENT; | |
492 | return; | |
493 | } | |
494 | ||
495 | t = msecs_to_jiffies(value * MSEC_PER_SEC) + jiffies; | |
496 | if (t == IPSET_ELEM_PERMANENT) | |
497 | /* Bingo! :-) */ | |
498 | t--; | |
499 | *timeout = t; | |
500 | } | |
501 | ||
94177f6e JS |
502 | void ip_set_init_comment(struct ip_set *set, struct ip_set_comment *comment, |
503 | const struct ip_set_ext *ext); | |
bd96b4c7 | 504 | |
bd96b4c7 JS |
505 | static inline void |
506 | ip_set_init_counter(struct ip_set_counter *counter, | |
507 | const struct ip_set_ext *ext) | |
508 | { | |
509 | if (ext->bytes != ULLONG_MAX) | |
510 | atomic64_set(&(counter)->bytes, (long long)(ext->bytes)); | |
511 | if (ext->packets != ULLONG_MAX) | |
512 | atomic64_set(&(counter)->packets, (long long)(ext->packets)); | |
513 | } | |
514 | ||
bd96b4c7 JS |
515 | static inline void |
516 | ip_set_init_skbinfo(struct ip_set_skbinfo *skbinfo, | |
517 | const struct ip_set_ext *ext) | |
518 | { | |
519 | *skbinfo = ext->skbinfo; | |
520 | } | |
075e64c0 | 521 | |
e9374524 VP |
522 | static inline void |
523 | nf_inet_addr_mask_inplace(union nf_inet_addr *a1, | |
524 | const union nf_inet_addr *mask) | |
525 | { | |
526 | a1->all[0] &= mask->all[0]; | |
527 | a1->all[1] &= mask->all[1]; | |
528 | a1->all[2] &= mask->all[2]; | |
529 | a1->all[3] &= mask->all[3]; | |
530 | } | |
531 | ||
ca134ce8 | 532 | #define IP_SET_INIT_KEXT(skb, opt, set) \ |
f66ee041 | 533 | { .bytes = (skb)->len, .packets = 1, .target = true,\ |
ca134ce8 | 534 | .timeout = ip_set_adt_opt_timeout(opt, set) } |
075e64c0 | 535 | |
ca134ce8 | 536 | #define IP_SET_INIT_UEXT(set) \ |
34d666d4 | 537 | { .bytes = ULLONG_MAX, .packets = ULLONG_MAX, \ |
ca134ce8 | 538 | .timeout = (set)->timeout } |
075e64c0 | 539 | |
35b8dcf8 JK |
540 | #define IPSET_CONCAT(a, b) a##b |
541 | #define IPSET_TOKEN(a, b) IPSET_CONCAT(a, b) | |
542 | ||
a7b4f989 | 543 | #endif /*_IP_SET_H */ |