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96518518 PM |
1 | #ifndef _NET_NF_TABLES_H |
2 | #define _NET_NF_TABLES_H | |
3 | ||
0b2d8a7b | 4 | #include <linux/module.h> |
96518518 PM |
5 | #include <linux/list.h> |
6 | #include <linux/netfilter.h> | |
67a8fc27 | 7 | #include <linux/netfilter/nfnetlink.h> |
0ca743a5 | 8 | #include <linux/netfilter/x_tables.h> |
96518518 | 9 | #include <linux/netfilter/nf_tables.h> |
ce355e20 | 10 | #include <linux/u64_stats_sync.h> |
96518518 PM |
11 | #include <net/netlink.h> |
12 | ||
20a69341 PM |
13 | #define NFT_JUMP_STACK_SIZE 16 |
14 | ||
96518518 PM |
15 | struct nft_pktinfo { |
16 | struct sk_buff *skb; | |
46448d00 | 17 | struct net *net; |
96518518 PM |
18 | const struct net_device *in; |
19 | const struct net_device *out; | |
6aa187f2 EB |
20 | u8 pf; |
21 | u8 hook; | |
4566bf27 | 22 | u8 tprot; |
0ca743a5 PNA |
23 | /* for x_tables compatibility */ |
24 | struct xt_action_param xt; | |
96518518 PM |
25 | }; |
26 | ||
0ca743a5 | 27 | static inline void nft_set_pktinfo(struct nft_pktinfo *pkt, |
0ca743a5 | 28 | struct sk_buff *skb, |
073bfd56 | 29 | const struct nf_hook_state *state) |
0ca743a5 PNA |
30 | { |
31 | pkt->skb = skb; | |
46448d00 | 32 | pkt->net = pkt->xt.net = state->net; |
073bfd56 DM |
33 | pkt->in = pkt->xt.in = state->in; |
34 | pkt->out = pkt->xt.out = state->out; | |
6aa187f2 EB |
35 | pkt->hook = pkt->xt.hooknum = state->hook; |
36 | pkt->pf = pkt->xt.family = state->pf; | |
0ca743a5 PNA |
37 | } |
38 | ||
a55e22e9 PM |
39 | /** |
40 | * struct nft_verdict - nf_tables verdict | |
41 | * | |
42 | * @code: nf_tables/netfilter verdict code | |
43 | * @chain: destination chain for NFT_JUMP/NFT_GOTO | |
44 | */ | |
45 | struct nft_verdict { | |
46 | u32 code; | |
47 | struct nft_chain *chain; | |
48 | }; | |
49 | ||
96518518 PM |
50 | struct nft_data { |
51 | union { | |
1ca2e170 PM |
52 | u32 data[4]; |
53 | struct nft_verdict verdict; | |
96518518 PM |
54 | }; |
55 | } __attribute__((aligned(__alignof__(u64)))); | |
56 | ||
a55e22e9 PM |
57 | /** |
58 | * struct nft_regs - nf_tables register set | |
59 | * | |
60 | * @data: data registers | |
61 | * @verdict: verdict register | |
62 | * | |
63 | * The first four data registers alias to the verdict register. | |
64 | */ | |
65 | struct nft_regs { | |
66 | union { | |
49499c3e | 67 | u32 data[20]; |
a55e22e9 PM |
68 | struct nft_verdict verdict; |
69 | }; | |
70 | }; | |
71 | ||
49499c3e PM |
72 | static inline void nft_data_copy(u32 *dst, const struct nft_data *src, |
73 | unsigned int len) | |
96518518 | 74 | { |
49499c3e | 75 | memcpy(dst, src, len); |
96518518 PM |
76 | } |
77 | ||
78 | static inline void nft_data_debug(const struct nft_data *data) | |
79 | { | |
80 | pr_debug("data[0]=%x data[1]=%x data[2]=%x data[3]=%x\n", | |
81 | data->data[0], data->data[1], | |
82 | data->data[2], data->data[3]); | |
83 | } | |
84 | ||
85 | /** | |
20a69341 | 86 | * struct nft_ctx - nf_tables rule/set context |
96518518 | 87 | * |
99633ab2 | 88 | * @net: net namespace |
96518518 PM |
89 | * @afi: address family info |
90 | * @table: the table the chain is contained in | |
91 | * @chain: the chain the rule is contained in | |
0ca743a5 | 92 | * @nla: netlink attributes |
128ad332 PNA |
93 | * @portid: netlink portID of the original message |
94 | * @seq: netlink sequence number | |
95 | * @report: notify via unicast netlink message | |
96518518 PM |
96 | */ |
97 | struct nft_ctx { | |
99633ab2 | 98 | struct net *net; |
7c95f6d8 PNA |
99 | struct nft_af_info *afi; |
100 | struct nft_table *table; | |
101 | struct nft_chain *chain; | |
0ca743a5 | 102 | const struct nlattr * const *nla; |
128ad332 PNA |
103 | u32 portid; |
104 | u32 seq; | |
105 | bool report; | |
96518518 PM |
106 | }; |
107 | ||
96518518 PM |
108 | struct nft_data_desc { |
109 | enum nft_data_types type; | |
110 | unsigned int len; | |
111 | }; | |
112 | ||
d0a11fc3 PM |
113 | int nft_data_init(const struct nft_ctx *ctx, |
114 | struct nft_data *data, unsigned int size, | |
5eccdfaa JP |
115 | struct nft_data_desc *desc, const struct nlattr *nla); |
116 | void nft_data_uninit(const struct nft_data *data, enum nft_data_types type); | |
117 | int nft_data_dump(struct sk_buff *skb, int attr, const struct nft_data *data, | |
118 | enum nft_data_types type, unsigned int len); | |
96518518 PM |
119 | |
120 | static inline enum nft_data_types nft_dreg_to_type(enum nft_registers reg) | |
121 | { | |
122 | return reg == NFT_REG_VERDICT ? NFT_DATA_VERDICT : NFT_DATA_VALUE; | |
123 | } | |
124 | ||
20a69341 PM |
125 | static inline enum nft_registers nft_type_to_reg(enum nft_data_types type) |
126 | { | |
bf798657 | 127 | return type == NFT_DATA_VERDICT ? NFT_REG_VERDICT : NFT_REG_1 * NFT_REG_SIZE / NFT_REG32_SIZE; |
20a69341 PM |
128 | } |
129 | ||
b1c96ed3 PM |
130 | unsigned int nft_parse_register(const struct nlattr *attr); |
131 | int nft_dump_register(struct sk_buff *skb, unsigned int attr, unsigned int reg); | |
132 | ||
d07db988 | 133 | int nft_validate_register_load(enum nft_registers reg, unsigned int len); |
1ec10212 PM |
134 | int nft_validate_register_store(const struct nft_ctx *ctx, |
135 | enum nft_registers reg, | |
136 | const struct nft_data *data, | |
137 | enum nft_data_types type, unsigned int len); | |
96518518 | 138 | |
86f1ec32 PM |
139 | /** |
140 | * struct nft_userdata - user defined data associated with an object | |
141 | * | |
142 | * @len: length of the data | |
143 | * @data: content | |
144 | * | |
145 | * The presence of user data is indicated in an object specific fashion, | |
146 | * so a length of zero can't occur and the value "len" indicates data | |
147 | * of length len + 1. | |
148 | */ | |
149 | struct nft_userdata { | |
150 | u8 len; | |
151 | unsigned char data[0]; | |
152 | }; | |
153 | ||
20a69341 PM |
154 | /** |
155 | * struct nft_set_elem - generic representation of set elements | |
156 | * | |
20a69341 | 157 | * @key: element key |
fe2811eb | 158 | * @priv: element private data and extensions |
20a69341 PM |
159 | */ |
160 | struct nft_set_elem { | |
7d740264 PM |
161 | union { |
162 | u32 buf[NFT_DATA_VALUE_MAXLEN / sizeof(u32)]; | |
163 | struct nft_data val; | |
164 | } key; | |
fe2811eb | 165 | void *priv; |
20a69341 PM |
166 | }; |
167 | ||
168 | struct nft_set; | |
169 | struct nft_set_iter { | |
8588ac09 | 170 | u8 genmask; |
20a69341 PM |
171 | unsigned int count; |
172 | unsigned int skip; | |
173 | int err; | |
174 | int (*fn)(const struct nft_ctx *ctx, | |
175 | const struct nft_set *set, | |
176 | const struct nft_set_iter *iter, | |
177 | const struct nft_set_elem *elem); | |
178 | }; | |
179 | ||
c50b960c PM |
180 | /** |
181 | * struct nft_set_desc - description of set elements | |
182 | * | |
183 | * @klen: key length | |
184 | * @dlen: data length | |
185 | * @size: number of set elements | |
186 | */ | |
187 | struct nft_set_desc { | |
188 | unsigned int klen; | |
189 | unsigned int dlen; | |
190 | unsigned int size; | |
191 | }; | |
192 | ||
193 | /** | |
194 | * enum nft_set_class - performance class | |
195 | * | |
196 | * @NFT_LOOKUP_O_1: constant, O(1) | |
197 | * @NFT_LOOKUP_O_LOG_N: logarithmic, O(log N) | |
198 | * @NFT_LOOKUP_O_N: linear, O(N) | |
199 | */ | |
200 | enum nft_set_class { | |
201 | NFT_SET_CLASS_O_1, | |
202 | NFT_SET_CLASS_O_LOG_N, | |
203 | NFT_SET_CLASS_O_N, | |
204 | }; | |
205 | ||
206 | /** | |
207 | * struct nft_set_estimate - estimation of memory and performance | |
208 | * characteristics | |
209 | * | |
210 | * @size: required memory | |
211 | * @class: lookup performance class | |
212 | */ | |
213 | struct nft_set_estimate { | |
214 | unsigned int size; | |
215 | enum nft_set_class class; | |
216 | }; | |
217 | ||
b2832dd6 | 218 | struct nft_set_ext; |
22fe54d5 | 219 | struct nft_expr; |
b2832dd6 | 220 | |
20a69341 PM |
221 | /** |
222 | * struct nft_set_ops - nf_tables set operations | |
223 | * | |
224 | * @lookup: look up an element within the set | |
225 | * @insert: insert new element into set | |
cc02e457 PM |
226 | * @activate: activate new element in the next generation |
227 | * @deactivate: deactivate element in the next generation | |
20a69341 PM |
228 | * @remove: remove element from set |
229 | * @walk: iterate over all set elemeennts | |
230 | * @privsize: function to return size of set private data | |
231 | * @init: initialize private data of new set instance | |
232 | * @destroy: destroy private data of set instance | |
233 | * @list: nf_tables_set_ops list node | |
234 | * @owner: module reference | |
fe2811eb | 235 | * @elemsize: element private size |
20a69341 PM |
236 | * @features: features supported by the implementation |
237 | */ | |
238 | struct nft_set_ops { | |
239 | bool (*lookup)(const struct nft_set *set, | |
8cd8937a | 240 | const u32 *key, |
b2832dd6 | 241 | const struct nft_set_ext **ext); |
22fe54d5 | 242 | bool (*update)(struct nft_set *set, |
8cd8937a | 243 | const u32 *key, |
22fe54d5 PM |
244 | void *(*new)(struct nft_set *, |
245 | const struct nft_expr *, | |
a55e22e9 | 246 | struct nft_regs *), |
22fe54d5 | 247 | const struct nft_expr *expr, |
a55e22e9 | 248 | struct nft_regs *regs, |
22fe54d5 PM |
249 | const struct nft_set_ext **ext); |
250 | ||
20a69341 PM |
251 | int (*insert)(const struct nft_set *set, |
252 | const struct nft_set_elem *elem); | |
cc02e457 PM |
253 | void (*activate)(const struct nft_set *set, |
254 | const struct nft_set_elem *elem); | |
255 | void * (*deactivate)(const struct nft_set *set, | |
256 | const struct nft_set_elem *elem); | |
20a69341 PM |
257 | void (*remove)(const struct nft_set *set, |
258 | const struct nft_set_elem *elem); | |
259 | void (*walk)(const struct nft_ctx *ctx, | |
260 | const struct nft_set *set, | |
261 | struct nft_set_iter *iter); | |
262 | ||
263 | unsigned int (*privsize)(const struct nlattr * const nla[]); | |
c50b960c PM |
264 | bool (*estimate)(const struct nft_set_desc *desc, |
265 | u32 features, | |
266 | struct nft_set_estimate *est); | |
20a69341 | 267 | int (*init)(const struct nft_set *set, |
c50b960c | 268 | const struct nft_set_desc *desc, |
20a69341 PM |
269 | const struct nlattr * const nla[]); |
270 | void (*destroy)(const struct nft_set *set); | |
271 | ||
272 | struct list_head list; | |
273 | struct module *owner; | |
fe2811eb | 274 | unsigned int elemsize; |
20a69341 PM |
275 | u32 features; |
276 | }; | |
277 | ||
5eccdfaa JP |
278 | int nft_register_set(struct nft_set_ops *ops); |
279 | void nft_unregister_set(struct nft_set_ops *ops); | |
20a69341 PM |
280 | |
281 | /** | |
282 | * struct nft_set - nf_tables set instance | |
283 | * | |
284 | * @list: table set list node | |
285 | * @bindings: list of set bindings | |
286 | * @name: name of the set | |
287 | * @ktype: key type (numeric type defined by userspace, not used in the kernel) | |
288 | * @dtype: data type (verdict or numeric type defined by userspace) | |
c50b960c PM |
289 | * @size: maximum set size |
290 | * @nelems: number of elements | |
3dd0673a | 291 | * @ndeact: number of deactivated elements queued for removal |
761da293 PM |
292 | * @timeout: default timeout value in msecs |
293 | * @gc_int: garbage collection interval in msecs | |
9363dc4b | 294 | * @policy: set parameterization (see enum nft_set_policies) |
e6d8ecac CFG |
295 | * @udlen: user data length |
296 | * @udata: user data | |
20a69341 | 297 | * @ops: set ops |
cc02e457 | 298 | * @pnet: network namespace |
20a69341 PM |
299 | * @flags: set flags |
300 | * @klen: key length | |
301 | * @dlen: data length | |
302 | * @data: private set data | |
303 | */ | |
304 | struct nft_set { | |
305 | struct list_head list; | |
306 | struct list_head bindings; | |
cb39ad8b | 307 | char name[NFT_SET_MAXNAMELEN]; |
20a69341 PM |
308 | u32 ktype; |
309 | u32 dtype; | |
c50b960c | 310 | u32 size; |
3dd0673a PM |
311 | atomic_t nelems; |
312 | u32 ndeact; | |
761da293 PM |
313 | u64 timeout; |
314 | u32 gc_int; | |
9363dc4b | 315 | u16 policy; |
e6d8ecac CFG |
316 | u16 udlen; |
317 | unsigned char *udata; | |
20a69341 PM |
318 | /* runtime data below here */ |
319 | const struct nft_set_ops *ops ____cacheline_aligned; | |
cc02e457 | 320 | possible_net_t pnet; |
20a69341 PM |
321 | u16 flags; |
322 | u8 klen; | |
323 | u8 dlen; | |
324 | unsigned char data[] | |
325 | __attribute__((aligned(__alignof__(u64)))); | |
326 | }; | |
327 | ||
328 | static inline void *nft_set_priv(const struct nft_set *set) | |
329 | { | |
330 | return (void *)set->data; | |
331 | } | |
332 | ||
9d098292 PM |
333 | static inline struct nft_set *nft_set_container_of(const void *priv) |
334 | { | |
335 | return (void *)priv - offsetof(struct nft_set, data); | |
336 | } | |
337 | ||
5eccdfaa JP |
338 | struct nft_set *nf_tables_set_lookup(const struct nft_table *table, |
339 | const struct nlattr *nla); | |
958bee14 PNA |
340 | struct nft_set *nf_tables_set_lookup_byid(const struct net *net, |
341 | const struct nlattr *nla); | |
20a69341 | 342 | |
761da293 PM |
343 | static inline unsigned long nft_set_gc_interval(const struct nft_set *set) |
344 | { | |
345 | return set->gc_int ? msecs_to_jiffies(set->gc_int) : HZ; | |
346 | } | |
347 | ||
20a69341 PM |
348 | /** |
349 | * struct nft_set_binding - nf_tables set binding | |
350 | * | |
351 | * @list: set bindings list node | |
352 | * @chain: chain containing the rule bound to the set | |
11113e19 | 353 | * @flags: set action flags |
20a69341 PM |
354 | * |
355 | * A set binding contains all information necessary for validation | |
356 | * of new elements added to a bound set. | |
357 | */ | |
358 | struct nft_set_binding { | |
359 | struct list_head list; | |
360 | const struct nft_chain *chain; | |
11113e19 | 361 | u32 flags; |
20a69341 PM |
362 | }; |
363 | ||
5eccdfaa JP |
364 | int nf_tables_bind_set(const struct nft_ctx *ctx, struct nft_set *set, |
365 | struct nft_set_binding *binding); | |
366 | void nf_tables_unbind_set(const struct nft_ctx *ctx, struct nft_set *set, | |
367 | struct nft_set_binding *binding); | |
20a69341 | 368 | |
3ac4c07a PM |
369 | /** |
370 | * enum nft_set_extensions - set extension type IDs | |
371 | * | |
372 | * @NFT_SET_EXT_KEY: element key | |
373 | * @NFT_SET_EXT_DATA: mapping data | |
374 | * @NFT_SET_EXT_FLAGS: element flags | |
c3e1b005 PM |
375 | * @NFT_SET_EXT_TIMEOUT: element timeout |
376 | * @NFT_SET_EXT_EXPIRATION: element expiration time | |
68e942e8 | 377 | * @NFT_SET_EXT_USERDATA: user data associated with the element |
f25ad2e9 | 378 | * @NFT_SET_EXT_EXPR: expression assiociated with the element |
3ac4c07a PM |
379 | * @NFT_SET_EXT_NUM: number of extension types |
380 | */ | |
381 | enum nft_set_extensions { | |
382 | NFT_SET_EXT_KEY, | |
383 | NFT_SET_EXT_DATA, | |
384 | NFT_SET_EXT_FLAGS, | |
c3e1b005 PM |
385 | NFT_SET_EXT_TIMEOUT, |
386 | NFT_SET_EXT_EXPIRATION, | |
68e942e8 | 387 | NFT_SET_EXT_USERDATA, |
f25ad2e9 | 388 | NFT_SET_EXT_EXPR, |
3ac4c07a PM |
389 | NFT_SET_EXT_NUM |
390 | }; | |
391 | ||
392 | /** | |
393 | * struct nft_set_ext_type - set extension type | |
394 | * | |
395 | * @len: fixed part length of the extension | |
396 | * @align: alignment requirements of the extension | |
397 | */ | |
398 | struct nft_set_ext_type { | |
399 | u8 len; | |
400 | u8 align; | |
401 | }; | |
402 | ||
403 | extern const struct nft_set_ext_type nft_set_ext_types[]; | |
404 | ||
405 | /** | |
406 | * struct nft_set_ext_tmpl - set extension template | |
407 | * | |
408 | * @len: length of extension area | |
409 | * @offset: offsets of individual extension types | |
410 | */ | |
411 | struct nft_set_ext_tmpl { | |
412 | u16 len; | |
413 | u8 offset[NFT_SET_EXT_NUM]; | |
414 | }; | |
415 | ||
416 | /** | |
417 | * struct nft_set_ext - set extensions | |
418 | * | |
cc02e457 | 419 | * @genmask: generation mask |
3ac4c07a PM |
420 | * @offset: offsets of individual extension types |
421 | * @data: beginning of extension data | |
422 | */ | |
423 | struct nft_set_ext { | |
cc02e457 | 424 | u8 genmask; |
3ac4c07a PM |
425 | u8 offset[NFT_SET_EXT_NUM]; |
426 | char data[0]; | |
427 | }; | |
428 | ||
429 | static inline void nft_set_ext_prepare(struct nft_set_ext_tmpl *tmpl) | |
430 | { | |
431 | memset(tmpl, 0, sizeof(*tmpl)); | |
432 | tmpl->len = sizeof(struct nft_set_ext); | |
433 | } | |
434 | ||
435 | static inline void nft_set_ext_add_length(struct nft_set_ext_tmpl *tmpl, u8 id, | |
436 | unsigned int len) | |
437 | { | |
438 | tmpl->len = ALIGN(tmpl->len, nft_set_ext_types[id].align); | |
439 | BUG_ON(tmpl->len > U8_MAX); | |
440 | tmpl->offset[id] = tmpl->len; | |
441 | tmpl->len += nft_set_ext_types[id].len + len; | |
442 | } | |
443 | ||
444 | static inline void nft_set_ext_add(struct nft_set_ext_tmpl *tmpl, u8 id) | |
445 | { | |
446 | nft_set_ext_add_length(tmpl, id, 0); | |
447 | } | |
448 | ||
449 | static inline void nft_set_ext_init(struct nft_set_ext *ext, | |
450 | const struct nft_set_ext_tmpl *tmpl) | |
451 | { | |
452 | memcpy(ext->offset, tmpl->offset, sizeof(ext->offset)); | |
453 | } | |
454 | ||
455 | static inline bool __nft_set_ext_exists(const struct nft_set_ext *ext, u8 id) | |
456 | { | |
457 | return !!ext->offset[id]; | |
458 | } | |
459 | ||
460 | static inline bool nft_set_ext_exists(const struct nft_set_ext *ext, u8 id) | |
461 | { | |
462 | return ext && __nft_set_ext_exists(ext, id); | |
463 | } | |
464 | ||
465 | static inline void *nft_set_ext(const struct nft_set_ext *ext, u8 id) | |
466 | { | |
467 | return (void *)ext + ext->offset[id]; | |
468 | } | |
469 | ||
470 | static inline struct nft_data *nft_set_ext_key(const struct nft_set_ext *ext) | |
471 | { | |
472 | return nft_set_ext(ext, NFT_SET_EXT_KEY); | |
473 | } | |
474 | ||
475 | static inline struct nft_data *nft_set_ext_data(const struct nft_set_ext *ext) | |
476 | { | |
477 | return nft_set_ext(ext, NFT_SET_EXT_DATA); | |
478 | } | |
479 | ||
480 | static inline u8 *nft_set_ext_flags(const struct nft_set_ext *ext) | |
481 | { | |
482 | return nft_set_ext(ext, NFT_SET_EXT_FLAGS); | |
483 | } | |
ef1f7df9 | 484 | |
c3e1b005 PM |
485 | static inline u64 *nft_set_ext_timeout(const struct nft_set_ext *ext) |
486 | { | |
487 | return nft_set_ext(ext, NFT_SET_EXT_TIMEOUT); | |
488 | } | |
489 | ||
490 | static inline unsigned long *nft_set_ext_expiration(const struct nft_set_ext *ext) | |
491 | { | |
492 | return nft_set_ext(ext, NFT_SET_EXT_EXPIRATION); | |
493 | } | |
494 | ||
68e942e8 PM |
495 | static inline struct nft_userdata *nft_set_ext_userdata(const struct nft_set_ext *ext) |
496 | { | |
497 | return nft_set_ext(ext, NFT_SET_EXT_USERDATA); | |
498 | } | |
499 | ||
f25ad2e9 PM |
500 | static inline struct nft_expr *nft_set_ext_expr(const struct nft_set_ext *ext) |
501 | { | |
502 | return nft_set_ext(ext, NFT_SET_EXT_EXPR); | |
503 | } | |
504 | ||
c3e1b005 PM |
505 | static inline bool nft_set_elem_expired(const struct nft_set_ext *ext) |
506 | { | |
507 | return nft_set_ext_exists(ext, NFT_SET_EXT_EXPIRATION) && | |
508 | time_is_before_eq_jiffies(*nft_set_ext_expiration(ext)); | |
509 | } | |
510 | ||
fe2811eb PM |
511 | static inline struct nft_set_ext *nft_set_elem_ext(const struct nft_set *set, |
512 | void *elem) | |
513 | { | |
514 | return elem + set->ops->elemsize; | |
515 | } | |
516 | ||
22fe54d5 PM |
517 | void *nft_set_elem_init(const struct nft_set *set, |
518 | const struct nft_set_ext_tmpl *tmpl, | |
49499c3e | 519 | const u32 *key, const u32 *data, |
22fe54d5 | 520 | u64 timeout, gfp_t gfp); |
61edafbb PM |
521 | void nft_set_elem_destroy(const struct nft_set *set, void *elem); |
522 | ||
cfed7e1b PM |
523 | /** |
524 | * struct nft_set_gc_batch_head - nf_tables set garbage collection batch | |
525 | * | |
526 | * @rcu: rcu head | |
527 | * @set: set the elements belong to | |
528 | * @cnt: count of elements | |
529 | */ | |
530 | struct nft_set_gc_batch_head { | |
531 | struct rcu_head rcu; | |
532 | const struct nft_set *set; | |
533 | unsigned int cnt; | |
534 | }; | |
535 | ||
536 | #define NFT_SET_GC_BATCH_SIZE ((PAGE_SIZE - \ | |
537 | sizeof(struct nft_set_gc_batch_head)) / \ | |
538 | sizeof(void *)) | |
539 | ||
540 | /** | |
541 | * struct nft_set_gc_batch - nf_tables set garbage collection batch | |
542 | * | |
543 | * @head: GC batch head | |
544 | * @elems: garbage collection elements | |
545 | */ | |
546 | struct nft_set_gc_batch { | |
547 | struct nft_set_gc_batch_head head; | |
548 | void *elems[NFT_SET_GC_BATCH_SIZE]; | |
549 | }; | |
550 | ||
551 | struct nft_set_gc_batch *nft_set_gc_batch_alloc(const struct nft_set *set, | |
552 | gfp_t gfp); | |
553 | void nft_set_gc_batch_release(struct rcu_head *rcu); | |
554 | ||
555 | static inline void nft_set_gc_batch_complete(struct nft_set_gc_batch *gcb) | |
556 | { | |
557 | if (gcb != NULL) | |
558 | call_rcu(&gcb->head.rcu, nft_set_gc_batch_release); | |
559 | } | |
560 | ||
561 | static inline struct nft_set_gc_batch * | |
562 | nft_set_gc_batch_check(const struct nft_set *set, struct nft_set_gc_batch *gcb, | |
563 | gfp_t gfp) | |
564 | { | |
565 | if (gcb != NULL) { | |
566 | if (gcb->head.cnt + 1 < ARRAY_SIZE(gcb->elems)) | |
567 | return gcb; | |
568 | nft_set_gc_batch_complete(gcb); | |
569 | } | |
570 | return nft_set_gc_batch_alloc(set, gfp); | |
571 | } | |
572 | ||
573 | static inline void nft_set_gc_batch_add(struct nft_set_gc_batch *gcb, | |
574 | void *elem) | |
575 | { | |
576 | gcb->elems[gcb->head.cnt++] = elem; | |
577 | } | |
578 | ||
96518518 | 579 | /** |
ef1f7df9 | 580 | * struct nft_expr_type - nf_tables expression type |
96518518 | 581 | * |
ef1f7df9 PM |
582 | * @select_ops: function to select nft_expr_ops |
583 | * @ops: default ops, used when no select_ops functions is present | |
96518518 PM |
584 | * @list: used internally |
585 | * @name: Identifier | |
586 | * @owner: module reference | |
587 | * @policy: netlink attribute policy | |
588 | * @maxattr: highest netlink attribute number | |
64d46806 | 589 | * @family: address family for AF-specific types |
151d799a | 590 | * @flags: expression type flags |
ef1f7df9 PM |
591 | */ |
592 | struct nft_expr_type { | |
0ca743a5 PNA |
593 | const struct nft_expr_ops *(*select_ops)(const struct nft_ctx *, |
594 | const struct nlattr * const tb[]); | |
ef1f7df9 PM |
595 | const struct nft_expr_ops *ops; |
596 | struct list_head list; | |
597 | const char *name; | |
598 | struct module *owner; | |
599 | const struct nla_policy *policy; | |
600 | unsigned int maxattr; | |
64d46806 | 601 | u8 family; |
151d799a | 602 | u8 flags; |
ef1f7df9 PM |
603 | }; |
604 | ||
151d799a PM |
605 | #define NFT_EXPR_STATEFUL 0x1 |
606 | ||
ef1f7df9 PM |
607 | /** |
608 | * struct nft_expr_ops - nf_tables expression operations | |
609 | * | |
610 | * @eval: Expression evaluation function | |
96518518 | 611 | * @size: full expression size, including private data size |
ef1f7df9 PM |
612 | * @init: initialization function |
613 | * @destroy: destruction function | |
614 | * @dump: function to dump parameters | |
615 | * @type: expression type | |
0ca743a5 PNA |
616 | * @validate: validate expression, called during loop detection |
617 | * @data: extra data to attach to this expression operation | |
96518518 PM |
618 | */ |
619 | struct nft_expr; | |
620 | struct nft_expr_ops { | |
621 | void (*eval)(const struct nft_expr *expr, | |
a55e22e9 | 622 | struct nft_regs *regs, |
96518518 | 623 | const struct nft_pktinfo *pkt); |
086f3321 PNA |
624 | int (*clone)(struct nft_expr *dst, |
625 | const struct nft_expr *src); | |
ef1f7df9 PM |
626 | unsigned int size; |
627 | ||
96518518 PM |
628 | int (*init)(const struct nft_ctx *ctx, |
629 | const struct nft_expr *expr, | |
630 | const struct nlattr * const tb[]); | |
62472bce PM |
631 | void (*destroy)(const struct nft_ctx *ctx, |
632 | const struct nft_expr *expr); | |
96518518 PM |
633 | int (*dump)(struct sk_buff *skb, |
634 | const struct nft_expr *expr); | |
0ca743a5 PNA |
635 | int (*validate)(const struct nft_ctx *ctx, |
636 | const struct nft_expr *expr, | |
637 | const struct nft_data **data); | |
ef1f7df9 | 638 | const struct nft_expr_type *type; |
0ca743a5 | 639 | void *data; |
96518518 PM |
640 | }; |
641 | ||
ef1f7df9 | 642 | #define NFT_EXPR_MAXATTR 16 |
96518518 PM |
643 | #define NFT_EXPR_SIZE(size) (sizeof(struct nft_expr) + \ |
644 | ALIGN(size, __alignof__(struct nft_expr))) | |
645 | ||
646 | /** | |
647 | * struct nft_expr - nf_tables expression | |
648 | * | |
649 | * @ops: expression ops | |
650 | * @data: expression private data | |
651 | */ | |
652 | struct nft_expr { | |
653 | const struct nft_expr_ops *ops; | |
654 | unsigned char data[]; | |
655 | }; | |
656 | ||
657 | static inline void *nft_expr_priv(const struct nft_expr *expr) | |
658 | { | |
659 | return (void *)expr->data; | |
660 | } | |
661 | ||
0b2d8a7b PM |
662 | struct nft_expr *nft_expr_init(const struct nft_ctx *ctx, |
663 | const struct nlattr *nla); | |
664 | void nft_expr_destroy(const struct nft_ctx *ctx, struct nft_expr *expr); | |
665 | int nft_expr_dump(struct sk_buff *skb, unsigned int attr, | |
666 | const struct nft_expr *expr); | |
667 | ||
086f3321 | 668 | static inline int nft_expr_clone(struct nft_expr *dst, struct nft_expr *src) |
0b2d8a7b | 669 | { |
086f3321 PNA |
670 | int err; |
671 | ||
0b2d8a7b | 672 | __module_get(src->ops->type->owner); |
086f3321 PNA |
673 | if (src->ops->clone) { |
674 | dst->ops = src->ops; | |
675 | err = src->ops->clone(dst, src); | |
676 | if (err < 0) | |
677 | return err; | |
678 | } else { | |
679 | memcpy(dst, src, src->ops->size); | |
680 | } | |
681 | return 0; | |
0b2d8a7b PM |
682 | } |
683 | ||
96518518 PM |
684 | /** |
685 | * struct nft_rule - nf_tables rule | |
686 | * | |
687 | * @list: used internally | |
96518518 | 688 | * @handle: rule handle |
0628b123 | 689 | * @genmask: generation mask |
96518518 | 690 | * @dlen: length of expression data |
86f1ec32 | 691 | * @udata: user data is appended to the rule |
96518518 PM |
692 | * @data: expression data |
693 | */ | |
694 | struct nft_rule { | |
695 | struct list_head list; | |
0768b3b3 | 696 | u64 handle:42, |
0628b123 | 697 | genmask:2, |
0768b3b3 | 698 | dlen:12, |
86f1ec32 | 699 | udata:1; |
96518518 PM |
700 | unsigned char data[] |
701 | __attribute__((aligned(__alignof__(struct nft_expr)))); | |
702 | }; | |
703 | ||
704 | static inline struct nft_expr *nft_expr_first(const struct nft_rule *rule) | |
705 | { | |
706 | return (struct nft_expr *)&rule->data[0]; | |
707 | } | |
708 | ||
709 | static inline struct nft_expr *nft_expr_next(const struct nft_expr *expr) | |
710 | { | |
711 | return ((void *)expr) + expr->ops->size; | |
712 | } | |
713 | ||
714 | static inline struct nft_expr *nft_expr_last(const struct nft_rule *rule) | |
715 | { | |
716 | return (struct nft_expr *)&rule->data[rule->dlen]; | |
717 | } | |
718 | ||
86f1ec32 | 719 | static inline struct nft_userdata *nft_userdata(const struct nft_rule *rule) |
0768b3b3 PNA |
720 | { |
721 | return (void *)&rule->data[rule->dlen]; | |
722 | } | |
723 | ||
96518518 PM |
724 | /* |
725 | * The last pointer isn't really necessary, but the compiler isn't able to | |
726 | * determine that the result of nft_expr_last() is always the same since it | |
727 | * can't assume that the dlen value wasn't changed within calls in the loop. | |
728 | */ | |
729 | #define nft_rule_for_each_expr(expr, last, rule) \ | |
730 | for ((expr) = nft_expr_first(rule), (last) = nft_expr_last(rule); \ | |
731 | (expr) != (last); \ | |
732 | (expr) = nft_expr_next(expr)) | |
733 | ||
734 | enum nft_chain_flags { | |
735 | NFT_BASE_CHAIN = 0x1, | |
91c7b38d | 736 | NFT_CHAIN_INACTIVE = 0x2, |
96518518 PM |
737 | }; |
738 | ||
739 | /** | |
740 | * struct nft_chain - nf_tables chain | |
741 | * | |
742 | * @rules: list of rules in the chain | |
743 | * @list: used internally | |
b5bc89bf | 744 | * @table: table that this chain belongs to |
96518518 | 745 | * @handle: chain handle |
96518518 PM |
746 | * @use: number of jump references to this chain |
747 | * @level: length of longest path to this chain | |
a0a7379e | 748 | * @flags: bitmask of enum nft_chain_flags |
96518518 PM |
749 | * @name: name of the chain |
750 | */ | |
751 | struct nft_chain { | |
752 | struct list_head rules; | |
753 | struct list_head list; | |
b5bc89bf | 754 | struct nft_table *table; |
96518518 | 755 | u64 handle; |
a0a7379e | 756 | u32 use; |
96518518 | 757 | u16 level; |
a0a7379e | 758 | u8 flags; |
96518518 PM |
759 | char name[NFT_CHAIN_MAXNAMELEN]; |
760 | }; | |
761 | ||
9370761c PNA |
762 | enum nft_chain_type { |
763 | NFT_CHAIN_T_DEFAULT = 0, | |
764 | NFT_CHAIN_T_ROUTE, | |
765 | NFT_CHAIN_T_NAT, | |
766 | NFT_CHAIN_T_MAX | |
767 | }; | |
768 | ||
1a1e1a12 PM |
769 | /** |
770 | * struct nf_chain_type - nf_tables chain type info | |
771 | * | |
772 | * @name: name of the type | |
773 | * @type: numeric identifier | |
774 | * @family: address family | |
775 | * @owner: module owner | |
776 | * @hook_mask: mask of valid hooks | |
777 | * @hooks: hookfn overrides | |
778 | */ | |
779 | struct nf_chain_type { | |
780 | const char *name; | |
781 | enum nft_chain_type type; | |
782 | int family; | |
783 | struct module *owner; | |
784 | unsigned int hook_mask; | |
785 | nf_hookfn *hooks[NF_MAX_HOOKS]; | |
786 | }; | |
787 | ||
7210e4e3 PNA |
788 | int nft_chain_validate_dependency(const struct nft_chain *chain, |
789 | enum nft_chain_type type); | |
75e8d06d PNA |
790 | int nft_chain_validate_hooks(const struct nft_chain *chain, |
791 | unsigned int hook_flags); | |
7210e4e3 | 792 | |
0ca743a5 | 793 | struct nft_stats { |
ce355e20 ED |
794 | u64 bytes; |
795 | u64 pkts; | |
796 | struct u64_stats_sync syncp; | |
0ca743a5 PNA |
797 | }; |
798 | ||
115a60b1 | 799 | #define NFT_HOOK_OPS_MAX 2 |
835b8033 | 800 | #define NFT_BASECHAIN_DISABLED (1 << 0) |
115a60b1 | 801 | |
96518518 PM |
802 | /** |
803 | * struct nft_base_chain - nf_tables base chain | |
804 | * | |
805 | * @ops: netfilter hook ops | |
5ebb335d | 806 | * @pnet: net namespace that this chain belongs to |
9370761c | 807 | * @type: chain type |
0ca743a5 PNA |
808 | * @policy: default policy |
809 | * @stats: per-cpu chain stats | |
96518518 | 810 | * @chain: the chain |
2cbce139 | 811 | * @dev_name: device name that this base chain is attached to (if any) |
96518518 PM |
812 | */ |
813 | struct nft_base_chain { | |
115a60b1 | 814 | struct nf_hook_ops ops[NFT_HOOK_OPS_MAX]; |
5ebb335d | 815 | possible_net_t pnet; |
2a37d755 | 816 | const struct nf_chain_type *type; |
0ca743a5 | 817 | u8 policy; |
835b8033 | 818 | u8 flags; |
0ca743a5 | 819 | struct nft_stats __percpu *stats; |
96518518 | 820 | struct nft_chain chain; |
2cbce139 | 821 | char dev_name[IFNAMSIZ]; |
96518518 PM |
822 | }; |
823 | ||
824 | static inline struct nft_base_chain *nft_base_chain(const struct nft_chain *chain) | |
825 | { | |
826 | return container_of(chain, struct nft_base_chain, chain); | |
827 | } | |
828 | ||
5ebe0b0e | 829 | int __nft_release_basechain(struct nft_ctx *ctx); |
835b8033 | 830 | |
06198b34 | 831 | unsigned int nft_do_chain(struct nft_pktinfo *pkt, void *priv); |
96518518 | 832 | |
96518518 PM |
833 | /** |
834 | * struct nft_table - nf_tables table | |
835 | * | |
836 | * @list: used internally | |
837 | * @chains: chains in the table | |
838 | * @sets: sets in the table | |
839 | * @hgenerator: handle generator state | |
840 | * @use: number of chain references to this table | |
841 | * @flags: table flag (see enum nft_table_flags) | |
842 | * @name: name of the table | |
843 | */ | |
844 | struct nft_table { | |
845 | struct list_head list; | |
846 | struct list_head chains; | |
847 | struct list_head sets; | |
848 | u64 hgenerator; | |
849 | u32 use; | |
850 | u16 flags; | |
1cae565e | 851 | char name[NFT_TABLE_MAXNAMELEN]; |
ebddf1a8 PNA |
852 | }; |
853 | ||
854 | enum nft_af_flags { | |
855 | NFT_AF_NEEDS_DEV = (1 << 0), | |
96518518 PM |
856 | }; |
857 | ||
858 | /** | |
859 | * struct nft_af_info - nf_tables address family info | |
860 | * | |
861 | * @list: used internally | |
862 | * @family: address family | |
863 | * @nhooks: number of hooks in this family | |
864 | * @owner: module owner | |
865 | * @tables: used internally | |
ebddf1a8 | 866 | * @flags: family flags |
115a60b1 PM |
867 | * @nops: number of hook ops in this family |
868 | * @hook_ops_init: initialization function for chain hook ops | |
96518518 PM |
869 | * @hooks: hookfn overrides for packet validation |
870 | */ | |
871 | struct nft_af_info { | |
872 | struct list_head list; | |
873 | int family; | |
874 | unsigned int nhooks; | |
875 | struct module *owner; | |
876 | struct list_head tables; | |
ebddf1a8 | 877 | u32 flags; |
115a60b1 PM |
878 | unsigned int nops; |
879 | void (*hook_ops_init)(struct nf_hook_ops *, | |
880 | unsigned int); | |
96518518 PM |
881 | nf_hookfn *hooks[NF_MAX_HOOKS]; |
882 | }; | |
883 | ||
5eccdfaa | 884 | int nft_register_afinfo(struct net *, struct nft_af_info *); |
df05ef87 | 885 | void nft_unregister_afinfo(struct net *, struct nft_af_info *); |
96518518 | 886 | |
2a37d755 PM |
887 | int nft_register_chain_type(const struct nf_chain_type *); |
888 | void nft_unregister_chain_type(const struct nf_chain_type *); | |
96518518 | 889 | |
5eccdfaa JP |
890 | int nft_register_expr(struct nft_expr_type *); |
891 | void nft_unregister_expr(struct nft_expr_type *); | |
96518518 | 892 | |
33d5a7b1 FW |
893 | int nft_verdict_dump(struct sk_buff *skb, int type, |
894 | const struct nft_verdict *v); | |
895 | ||
896 | /** | |
897 | * struct nft_traceinfo - nft tracing information and state | |
898 | * | |
899 | * @pkt: pktinfo currently processed | |
900 | * @basechain: base chain currently processed | |
901 | * @chain: chain currently processed | |
902 | * @rule: rule that was evaluated | |
903 | * @verdict: verdict given by rule | |
904 | * @type: event type (enum nft_trace_types) | |
905 | * @packet_dumped: packet headers sent in a previous traceinfo message | |
906 | * @trace: other struct members are initialised | |
907 | */ | |
908 | struct nft_traceinfo { | |
909 | const struct nft_pktinfo *pkt; | |
910 | const struct nft_base_chain *basechain; | |
911 | const struct nft_chain *chain; | |
912 | const struct nft_rule *rule; | |
913 | const struct nft_verdict *verdict; | |
914 | enum nft_trace_types type; | |
915 | bool packet_dumped; | |
916 | bool trace; | |
917 | }; | |
918 | ||
919 | void nft_trace_init(struct nft_traceinfo *info, const struct nft_pktinfo *pkt, | |
920 | const struct nft_verdict *verdict, | |
921 | const struct nft_chain *basechain); | |
922 | ||
923 | void nft_trace_notify(struct nft_traceinfo *info); | |
924 | ||
67a8fc27 PM |
925 | #define nft_dereference(p) \ |
926 | nfnl_dereference(p, NFNL_SUBSYS_NFTABLES) | |
927 | ||
96518518 PM |
928 | #define MODULE_ALIAS_NFT_FAMILY(family) \ |
929 | MODULE_ALIAS("nft-afinfo-" __stringify(family)) | |
930 | ||
9370761c PNA |
931 | #define MODULE_ALIAS_NFT_CHAIN(family, name) \ |
932 | MODULE_ALIAS("nft-chain-" __stringify(family) "-" name) | |
96518518 | 933 | |
64d46806 PM |
934 | #define MODULE_ALIAS_NFT_AF_EXPR(family, name) \ |
935 | MODULE_ALIAS("nft-expr-" __stringify(family) "-" name) | |
936 | ||
96518518 PM |
937 | #define MODULE_ALIAS_NFT_EXPR(name) \ |
938 | MODULE_ALIAS("nft-expr-" name) | |
939 | ||
20a69341 PM |
940 | #define MODULE_ALIAS_NFT_SET() \ |
941 | MODULE_ALIAS("nft-set") | |
942 | ||
ea4bd995 PM |
943 | /* |
944 | * The gencursor defines two generations, the currently active and the | |
945 | * next one. Objects contain a bitmask of 2 bits specifying the generations | |
946 | * they're active in. A set bit means they're inactive in the generation | |
947 | * represented by that bit. | |
948 | * | |
949 | * New objects start out as inactive in the current and active in the | |
950 | * next generation. When committing the ruleset the bitmask is cleared, | |
951 | * meaning they're active in all generations. When removing an object, | |
952 | * it is set inactive in the next generation. After committing the ruleset, | |
953 | * the objects are removed. | |
954 | */ | |
955 | static inline unsigned int nft_gencursor_next(const struct net *net) | |
956 | { | |
957 | return net->nft.gencursor + 1 == 1 ? 1 : 0; | |
958 | } | |
959 | ||
960 | static inline u8 nft_genmask_next(const struct net *net) | |
961 | { | |
962 | return 1 << nft_gencursor_next(net); | |
963 | } | |
964 | ||
965 | static inline u8 nft_genmask_cur(const struct net *net) | |
966 | { | |
967 | /* Use ACCESS_ONCE() to prevent refetching the value for atomicity */ | |
968 | return 1 << ACCESS_ONCE(net->nft.gencursor); | |
969 | } | |
970 | ||
22fe54d5 PM |
971 | #define NFT_GENMASK_ANY ((1 << 0) | (1 << 1)) |
972 | ||
cc02e457 PM |
973 | /* |
974 | * Set element transaction helpers | |
975 | */ | |
976 | ||
977 | static inline bool nft_set_elem_active(const struct nft_set_ext *ext, | |
978 | u8 genmask) | |
979 | { | |
980 | return !(ext->genmask & genmask); | |
981 | } | |
982 | ||
983 | static inline void nft_set_elem_change_active(const struct nft_set *set, | |
984 | struct nft_set_ext *ext) | |
985 | { | |
986 | ext->genmask ^= nft_genmask_next(read_pnet(&set->pnet)); | |
987 | } | |
988 | ||
69086658 PM |
989 | /* |
990 | * We use a free bit in the genmask field to indicate the element | |
991 | * is busy, meaning it is currently being processed either by | |
992 | * the netlink API or GC. | |
993 | * | |
994 | * Even though the genmask is only a single byte wide, this works | |
995 | * because the extension structure if fully constant once initialized, | |
996 | * so there are no non-atomic write accesses unless it is already | |
997 | * marked busy. | |
998 | */ | |
999 | #define NFT_SET_ELEM_BUSY_MASK (1 << 2) | |
1000 | ||
1001 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
1002 | #define NFT_SET_ELEM_BUSY_BIT 2 | |
1003 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
1004 | #define NFT_SET_ELEM_BUSY_BIT (BITS_PER_LONG - BITS_PER_BYTE + 2) | |
1005 | #else | |
1006 | #error | |
1007 | #endif | |
1008 | ||
1009 | static inline int nft_set_elem_mark_busy(struct nft_set_ext *ext) | |
1010 | { | |
1011 | unsigned long *word = (unsigned long *)ext; | |
1012 | ||
1013 | BUILD_BUG_ON(offsetof(struct nft_set_ext, genmask) != 0); | |
1014 | return test_and_set_bit(NFT_SET_ELEM_BUSY_BIT, word); | |
1015 | } | |
1016 | ||
1017 | static inline void nft_set_elem_clear_busy(struct nft_set_ext *ext) | |
1018 | { | |
1019 | unsigned long *word = (unsigned long *)ext; | |
1020 | ||
1021 | clear_bit(NFT_SET_ELEM_BUSY_BIT, word); | |
1022 | } | |
1023 | ||
1a1e1a12 PM |
1024 | /** |
1025 | * struct nft_trans - nf_tables object update in transaction | |
1026 | * | |
1027 | * @list: used internally | |
1028 | * @msg_type: message type | |
1029 | * @ctx: transaction context | |
1030 | * @data: internal information related to the transaction | |
1031 | */ | |
1032 | struct nft_trans { | |
1033 | struct list_head list; | |
1034 | int msg_type; | |
1035 | struct nft_ctx ctx; | |
1036 | char data[0]; | |
1037 | }; | |
1038 | ||
1039 | struct nft_trans_rule { | |
1040 | struct nft_rule *rule; | |
1041 | }; | |
1042 | ||
1043 | #define nft_trans_rule(trans) \ | |
1044 | (((struct nft_trans_rule *)trans->data)->rule) | |
1045 | ||
1046 | struct nft_trans_set { | |
1047 | struct nft_set *set; | |
1048 | u32 set_id; | |
1049 | }; | |
1050 | ||
1051 | #define nft_trans_set(trans) \ | |
1052 | (((struct nft_trans_set *)trans->data)->set) | |
1053 | #define nft_trans_set_id(trans) \ | |
1054 | (((struct nft_trans_set *)trans->data)->set_id) | |
1055 | ||
1056 | struct nft_trans_chain { | |
1057 | bool update; | |
1058 | char name[NFT_CHAIN_MAXNAMELEN]; | |
1059 | struct nft_stats __percpu *stats; | |
1060 | u8 policy; | |
1061 | }; | |
1062 | ||
1063 | #define nft_trans_chain_update(trans) \ | |
1064 | (((struct nft_trans_chain *)trans->data)->update) | |
1065 | #define nft_trans_chain_name(trans) \ | |
1066 | (((struct nft_trans_chain *)trans->data)->name) | |
1067 | #define nft_trans_chain_stats(trans) \ | |
1068 | (((struct nft_trans_chain *)trans->data)->stats) | |
1069 | #define nft_trans_chain_policy(trans) \ | |
1070 | (((struct nft_trans_chain *)trans->data)->policy) | |
1071 | ||
1072 | struct nft_trans_table { | |
1073 | bool update; | |
1074 | bool enable; | |
1075 | }; | |
1076 | ||
1077 | #define nft_trans_table_update(trans) \ | |
1078 | (((struct nft_trans_table *)trans->data)->update) | |
1079 | #define nft_trans_table_enable(trans) \ | |
1080 | (((struct nft_trans_table *)trans->data)->enable) | |
1081 | ||
1082 | struct nft_trans_elem { | |
1083 | struct nft_set *set; | |
1084 | struct nft_set_elem elem; | |
1085 | }; | |
1086 | ||
1087 | #define nft_trans_elem_set(trans) \ | |
1088 | (((struct nft_trans_elem *)trans->data)->set) | |
1089 | #define nft_trans_elem(trans) \ | |
1090 | (((struct nft_trans_elem *)trans->data)->elem) | |
1091 | ||
96518518 | 1092 | #endif /* _NET_NF_TABLES_H */ |