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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 { | |
42a55769 PNA |
239 | bool (*lookup)(const struct net *net, |
240 | const struct nft_set *set, | |
8cd8937a | 241 | const u32 *key, |
b2832dd6 | 242 | const struct nft_set_ext **ext); |
22fe54d5 | 243 | bool (*update)(struct nft_set *set, |
8cd8937a | 244 | const u32 *key, |
22fe54d5 PM |
245 | void *(*new)(struct nft_set *, |
246 | const struct nft_expr *, | |
a55e22e9 | 247 | struct nft_regs *), |
22fe54d5 | 248 | const struct nft_expr *expr, |
a55e22e9 | 249 | struct nft_regs *regs, |
22fe54d5 PM |
250 | const struct nft_set_ext **ext); |
251 | ||
42a55769 PNA |
252 | int (*insert)(const struct net *net, |
253 | const struct nft_set *set, | |
20a69341 | 254 | const struct nft_set_elem *elem); |
42a55769 PNA |
255 | void (*activate)(const struct net *net, |
256 | const struct nft_set *set, | |
cc02e457 | 257 | const struct nft_set_elem *elem); |
42a55769 PNA |
258 | void * (*deactivate)(const struct net *net, |
259 | const struct nft_set *set, | |
cc02e457 | 260 | const struct nft_set_elem *elem); |
20a69341 PM |
261 | void (*remove)(const struct nft_set *set, |
262 | const struct nft_set_elem *elem); | |
263 | void (*walk)(const struct nft_ctx *ctx, | |
264 | const struct nft_set *set, | |
265 | struct nft_set_iter *iter); | |
266 | ||
267 | unsigned int (*privsize)(const struct nlattr * const nla[]); | |
c50b960c PM |
268 | bool (*estimate)(const struct nft_set_desc *desc, |
269 | u32 features, | |
270 | struct nft_set_estimate *est); | |
20a69341 | 271 | int (*init)(const struct nft_set *set, |
c50b960c | 272 | const struct nft_set_desc *desc, |
20a69341 PM |
273 | const struct nlattr * const nla[]); |
274 | void (*destroy)(const struct nft_set *set); | |
275 | ||
276 | struct list_head list; | |
277 | struct module *owner; | |
fe2811eb | 278 | unsigned int elemsize; |
20a69341 PM |
279 | u32 features; |
280 | }; | |
281 | ||
5eccdfaa JP |
282 | int nft_register_set(struct nft_set_ops *ops); |
283 | void nft_unregister_set(struct nft_set_ops *ops); | |
20a69341 PM |
284 | |
285 | /** | |
286 | * struct nft_set - nf_tables set instance | |
287 | * | |
288 | * @list: table set list node | |
289 | * @bindings: list of set bindings | |
290 | * @name: name of the set | |
291 | * @ktype: key type (numeric type defined by userspace, not used in the kernel) | |
292 | * @dtype: data type (verdict or numeric type defined by userspace) | |
c50b960c PM |
293 | * @size: maximum set size |
294 | * @nelems: number of elements | |
3dd0673a | 295 | * @ndeact: number of deactivated elements queued for removal |
761da293 PM |
296 | * @timeout: default timeout value in msecs |
297 | * @gc_int: garbage collection interval in msecs | |
9363dc4b | 298 | * @policy: set parameterization (see enum nft_set_policies) |
e6d8ecac CFG |
299 | * @udlen: user data length |
300 | * @udata: user data | |
20a69341 PM |
301 | * @ops: set ops |
302 | * @flags: set flags | |
37a9cc52 | 303 | * @genmask: generation mask |
20a69341 PM |
304 | * @klen: key length |
305 | * @dlen: data length | |
306 | * @data: private set data | |
307 | */ | |
308 | struct nft_set { | |
309 | struct list_head list; | |
310 | struct list_head bindings; | |
cb39ad8b | 311 | char name[NFT_SET_MAXNAMELEN]; |
20a69341 PM |
312 | u32 ktype; |
313 | u32 dtype; | |
c50b960c | 314 | u32 size; |
3dd0673a PM |
315 | atomic_t nelems; |
316 | u32 ndeact; | |
761da293 PM |
317 | u64 timeout; |
318 | u32 gc_int; | |
9363dc4b | 319 | u16 policy; |
e6d8ecac CFG |
320 | u16 udlen; |
321 | unsigned char *udata; | |
20a69341 PM |
322 | /* runtime data below here */ |
323 | const struct nft_set_ops *ops ____cacheline_aligned; | |
37a9cc52 PNA |
324 | u16 flags:14, |
325 | genmask:2; | |
20a69341 PM |
326 | u8 klen; |
327 | u8 dlen; | |
328 | unsigned char data[] | |
329 | __attribute__((aligned(__alignof__(u64)))); | |
330 | }; | |
331 | ||
332 | static inline void *nft_set_priv(const struct nft_set *set) | |
333 | { | |
334 | return (void *)set->data; | |
335 | } | |
336 | ||
9d098292 PM |
337 | static inline struct nft_set *nft_set_container_of(const void *priv) |
338 | { | |
339 | return (void *)priv - offsetof(struct nft_set, data); | |
340 | } | |
341 | ||
5eccdfaa | 342 | struct nft_set *nf_tables_set_lookup(const struct nft_table *table, |
37a9cc52 | 343 | const struct nlattr *nla, u8 genmask); |
958bee14 | 344 | struct nft_set *nf_tables_set_lookup_byid(const struct net *net, |
37a9cc52 | 345 | const struct nlattr *nla, u8 genmask); |
20a69341 | 346 | |
761da293 PM |
347 | static inline unsigned long nft_set_gc_interval(const struct nft_set *set) |
348 | { | |
349 | return set->gc_int ? msecs_to_jiffies(set->gc_int) : HZ; | |
350 | } | |
351 | ||
20a69341 PM |
352 | /** |
353 | * struct nft_set_binding - nf_tables set binding | |
354 | * | |
355 | * @list: set bindings list node | |
356 | * @chain: chain containing the rule bound to the set | |
11113e19 | 357 | * @flags: set action flags |
20a69341 PM |
358 | * |
359 | * A set binding contains all information necessary for validation | |
360 | * of new elements added to a bound set. | |
361 | */ | |
362 | struct nft_set_binding { | |
363 | struct list_head list; | |
364 | const struct nft_chain *chain; | |
11113e19 | 365 | u32 flags; |
20a69341 PM |
366 | }; |
367 | ||
5eccdfaa JP |
368 | int nf_tables_bind_set(const struct nft_ctx *ctx, struct nft_set *set, |
369 | struct nft_set_binding *binding); | |
370 | void nf_tables_unbind_set(const struct nft_ctx *ctx, struct nft_set *set, | |
371 | struct nft_set_binding *binding); | |
20a69341 | 372 | |
3ac4c07a PM |
373 | /** |
374 | * enum nft_set_extensions - set extension type IDs | |
375 | * | |
376 | * @NFT_SET_EXT_KEY: element key | |
377 | * @NFT_SET_EXT_DATA: mapping data | |
378 | * @NFT_SET_EXT_FLAGS: element flags | |
c3e1b005 PM |
379 | * @NFT_SET_EXT_TIMEOUT: element timeout |
380 | * @NFT_SET_EXT_EXPIRATION: element expiration time | |
68e942e8 | 381 | * @NFT_SET_EXT_USERDATA: user data associated with the element |
f25ad2e9 | 382 | * @NFT_SET_EXT_EXPR: expression assiociated with the element |
3ac4c07a PM |
383 | * @NFT_SET_EXT_NUM: number of extension types |
384 | */ | |
385 | enum nft_set_extensions { | |
386 | NFT_SET_EXT_KEY, | |
387 | NFT_SET_EXT_DATA, | |
388 | NFT_SET_EXT_FLAGS, | |
c3e1b005 PM |
389 | NFT_SET_EXT_TIMEOUT, |
390 | NFT_SET_EXT_EXPIRATION, | |
68e942e8 | 391 | NFT_SET_EXT_USERDATA, |
f25ad2e9 | 392 | NFT_SET_EXT_EXPR, |
3ac4c07a PM |
393 | NFT_SET_EXT_NUM |
394 | }; | |
395 | ||
396 | /** | |
397 | * struct nft_set_ext_type - set extension type | |
398 | * | |
399 | * @len: fixed part length of the extension | |
400 | * @align: alignment requirements of the extension | |
401 | */ | |
402 | struct nft_set_ext_type { | |
403 | u8 len; | |
404 | u8 align; | |
405 | }; | |
406 | ||
407 | extern const struct nft_set_ext_type nft_set_ext_types[]; | |
408 | ||
409 | /** | |
410 | * struct nft_set_ext_tmpl - set extension template | |
411 | * | |
412 | * @len: length of extension area | |
413 | * @offset: offsets of individual extension types | |
414 | */ | |
415 | struct nft_set_ext_tmpl { | |
416 | u16 len; | |
417 | u8 offset[NFT_SET_EXT_NUM]; | |
418 | }; | |
419 | ||
420 | /** | |
421 | * struct nft_set_ext - set extensions | |
422 | * | |
cc02e457 | 423 | * @genmask: generation mask |
3ac4c07a PM |
424 | * @offset: offsets of individual extension types |
425 | * @data: beginning of extension data | |
426 | */ | |
427 | struct nft_set_ext { | |
cc02e457 | 428 | u8 genmask; |
3ac4c07a PM |
429 | u8 offset[NFT_SET_EXT_NUM]; |
430 | char data[0]; | |
431 | }; | |
432 | ||
433 | static inline void nft_set_ext_prepare(struct nft_set_ext_tmpl *tmpl) | |
434 | { | |
435 | memset(tmpl, 0, sizeof(*tmpl)); | |
436 | tmpl->len = sizeof(struct nft_set_ext); | |
437 | } | |
438 | ||
439 | static inline void nft_set_ext_add_length(struct nft_set_ext_tmpl *tmpl, u8 id, | |
440 | unsigned int len) | |
441 | { | |
442 | tmpl->len = ALIGN(tmpl->len, nft_set_ext_types[id].align); | |
443 | BUG_ON(tmpl->len > U8_MAX); | |
444 | tmpl->offset[id] = tmpl->len; | |
445 | tmpl->len += nft_set_ext_types[id].len + len; | |
446 | } | |
447 | ||
448 | static inline void nft_set_ext_add(struct nft_set_ext_tmpl *tmpl, u8 id) | |
449 | { | |
450 | nft_set_ext_add_length(tmpl, id, 0); | |
451 | } | |
452 | ||
453 | static inline void nft_set_ext_init(struct nft_set_ext *ext, | |
454 | const struct nft_set_ext_tmpl *tmpl) | |
455 | { | |
456 | memcpy(ext->offset, tmpl->offset, sizeof(ext->offset)); | |
457 | } | |
458 | ||
459 | static inline bool __nft_set_ext_exists(const struct nft_set_ext *ext, u8 id) | |
460 | { | |
461 | return !!ext->offset[id]; | |
462 | } | |
463 | ||
464 | static inline bool nft_set_ext_exists(const struct nft_set_ext *ext, u8 id) | |
465 | { | |
466 | return ext && __nft_set_ext_exists(ext, id); | |
467 | } | |
468 | ||
469 | static inline void *nft_set_ext(const struct nft_set_ext *ext, u8 id) | |
470 | { | |
471 | return (void *)ext + ext->offset[id]; | |
472 | } | |
473 | ||
474 | static inline struct nft_data *nft_set_ext_key(const struct nft_set_ext *ext) | |
475 | { | |
476 | return nft_set_ext(ext, NFT_SET_EXT_KEY); | |
477 | } | |
478 | ||
479 | static inline struct nft_data *nft_set_ext_data(const struct nft_set_ext *ext) | |
480 | { | |
481 | return nft_set_ext(ext, NFT_SET_EXT_DATA); | |
482 | } | |
483 | ||
484 | static inline u8 *nft_set_ext_flags(const struct nft_set_ext *ext) | |
485 | { | |
486 | return nft_set_ext(ext, NFT_SET_EXT_FLAGS); | |
487 | } | |
ef1f7df9 | 488 | |
c3e1b005 PM |
489 | static inline u64 *nft_set_ext_timeout(const struct nft_set_ext *ext) |
490 | { | |
491 | return nft_set_ext(ext, NFT_SET_EXT_TIMEOUT); | |
492 | } | |
493 | ||
494 | static inline unsigned long *nft_set_ext_expiration(const struct nft_set_ext *ext) | |
495 | { | |
496 | return nft_set_ext(ext, NFT_SET_EXT_EXPIRATION); | |
497 | } | |
498 | ||
68e942e8 PM |
499 | static inline struct nft_userdata *nft_set_ext_userdata(const struct nft_set_ext *ext) |
500 | { | |
501 | return nft_set_ext(ext, NFT_SET_EXT_USERDATA); | |
502 | } | |
503 | ||
f25ad2e9 PM |
504 | static inline struct nft_expr *nft_set_ext_expr(const struct nft_set_ext *ext) |
505 | { | |
506 | return nft_set_ext(ext, NFT_SET_EXT_EXPR); | |
507 | } | |
508 | ||
c3e1b005 PM |
509 | static inline bool nft_set_elem_expired(const struct nft_set_ext *ext) |
510 | { | |
511 | return nft_set_ext_exists(ext, NFT_SET_EXT_EXPIRATION) && | |
512 | time_is_before_eq_jiffies(*nft_set_ext_expiration(ext)); | |
513 | } | |
514 | ||
fe2811eb PM |
515 | static inline struct nft_set_ext *nft_set_elem_ext(const struct nft_set *set, |
516 | void *elem) | |
517 | { | |
518 | return elem + set->ops->elemsize; | |
519 | } | |
520 | ||
22fe54d5 PM |
521 | void *nft_set_elem_init(const struct nft_set *set, |
522 | const struct nft_set_ext_tmpl *tmpl, | |
49499c3e | 523 | const u32 *key, const u32 *data, |
22fe54d5 | 524 | u64 timeout, gfp_t gfp); |
61edafbb PM |
525 | void nft_set_elem_destroy(const struct nft_set *set, void *elem); |
526 | ||
cfed7e1b PM |
527 | /** |
528 | * struct nft_set_gc_batch_head - nf_tables set garbage collection batch | |
529 | * | |
530 | * @rcu: rcu head | |
531 | * @set: set the elements belong to | |
532 | * @cnt: count of elements | |
533 | */ | |
534 | struct nft_set_gc_batch_head { | |
535 | struct rcu_head rcu; | |
536 | const struct nft_set *set; | |
537 | unsigned int cnt; | |
538 | }; | |
539 | ||
540 | #define NFT_SET_GC_BATCH_SIZE ((PAGE_SIZE - \ | |
541 | sizeof(struct nft_set_gc_batch_head)) / \ | |
542 | sizeof(void *)) | |
543 | ||
544 | /** | |
545 | * struct nft_set_gc_batch - nf_tables set garbage collection batch | |
546 | * | |
547 | * @head: GC batch head | |
548 | * @elems: garbage collection elements | |
549 | */ | |
550 | struct nft_set_gc_batch { | |
551 | struct nft_set_gc_batch_head head; | |
552 | void *elems[NFT_SET_GC_BATCH_SIZE]; | |
553 | }; | |
554 | ||
555 | struct nft_set_gc_batch *nft_set_gc_batch_alloc(const struct nft_set *set, | |
556 | gfp_t gfp); | |
557 | void nft_set_gc_batch_release(struct rcu_head *rcu); | |
558 | ||
559 | static inline void nft_set_gc_batch_complete(struct nft_set_gc_batch *gcb) | |
560 | { | |
561 | if (gcb != NULL) | |
562 | call_rcu(&gcb->head.rcu, nft_set_gc_batch_release); | |
563 | } | |
564 | ||
565 | static inline struct nft_set_gc_batch * | |
566 | nft_set_gc_batch_check(const struct nft_set *set, struct nft_set_gc_batch *gcb, | |
567 | gfp_t gfp) | |
568 | { | |
569 | if (gcb != NULL) { | |
570 | if (gcb->head.cnt + 1 < ARRAY_SIZE(gcb->elems)) | |
571 | return gcb; | |
572 | nft_set_gc_batch_complete(gcb); | |
573 | } | |
574 | return nft_set_gc_batch_alloc(set, gfp); | |
575 | } | |
576 | ||
577 | static inline void nft_set_gc_batch_add(struct nft_set_gc_batch *gcb, | |
578 | void *elem) | |
579 | { | |
580 | gcb->elems[gcb->head.cnt++] = elem; | |
581 | } | |
582 | ||
96518518 | 583 | /** |
ef1f7df9 | 584 | * struct nft_expr_type - nf_tables expression type |
96518518 | 585 | * |
ef1f7df9 PM |
586 | * @select_ops: function to select nft_expr_ops |
587 | * @ops: default ops, used when no select_ops functions is present | |
96518518 PM |
588 | * @list: used internally |
589 | * @name: Identifier | |
590 | * @owner: module reference | |
591 | * @policy: netlink attribute policy | |
592 | * @maxattr: highest netlink attribute number | |
64d46806 | 593 | * @family: address family for AF-specific types |
151d799a | 594 | * @flags: expression type flags |
ef1f7df9 PM |
595 | */ |
596 | struct nft_expr_type { | |
0ca743a5 PNA |
597 | const struct nft_expr_ops *(*select_ops)(const struct nft_ctx *, |
598 | const struct nlattr * const tb[]); | |
ef1f7df9 PM |
599 | const struct nft_expr_ops *ops; |
600 | struct list_head list; | |
601 | const char *name; | |
602 | struct module *owner; | |
603 | const struct nla_policy *policy; | |
604 | unsigned int maxattr; | |
64d46806 | 605 | u8 family; |
151d799a | 606 | u8 flags; |
ef1f7df9 PM |
607 | }; |
608 | ||
151d799a PM |
609 | #define NFT_EXPR_STATEFUL 0x1 |
610 | ||
ef1f7df9 PM |
611 | /** |
612 | * struct nft_expr_ops - nf_tables expression operations | |
613 | * | |
614 | * @eval: Expression evaluation function | |
96518518 | 615 | * @size: full expression size, including private data size |
ef1f7df9 PM |
616 | * @init: initialization function |
617 | * @destroy: destruction function | |
618 | * @dump: function to dump parameters | |
619 | * @type: expression type | |
0ca743a5 PNA |
620 | * @validate: validate expression, called during loop detection |
621 | * @data: extra data to attach to this expression operation | |
96518518 PM |
622 | */ |
623 | struct nft_expr; | |
624 | struct nft_expr_ops { | |
625 | void (*eval)(const struct nft_expr *expr, | |
a55e22e9 | 626 | struct nft_regs *regs, |
96518518 | 627 | const struct nft_pktinfo *pkt); |
086f3321 PNA |
628 | int (*clone)(struct nft_expr *dst, |
629 | const struct nft_expr *src); | |
ef1f7df9 PM |
630 | unsigned int size; |
631 | ||
96518518 PM |
632 | int (*init)(const struct nft_ctx *ctx, |
633 | const struct nft_expr *expr, | |
634 | const struct nlattr * const tb[]); | |
62472bce PM |
635 | void (*destroy)(const struct nft_ctx *ctx, |
636 | const struct nft_expr *expr); | |
96518518 PM |
637 | int (*dump)(struct sk_buff *skb, |
638 | const struct nft_expr *expr); | |
0ca743a5 PNA |
639 | int (*validate)(const struct nft_ctx *ctx, |
640 | const struct nft_expr *expr, | |
641 | const struct nft_data **data); | |
ef1f7df9 | 642 | const struct nft_expr_type *type; |
0ca743a5 | 643 | void *data; |
96518518 PM |
644 | }; |
645 | ||
ef1f7df9 | 646 | #define NFT_EXPR_MAXATTR 16 |
96518518 PM |
647 | #define NFT_EXPR_SIZE(size) (sizeof(struct nft_expr) + \ |
648 | ALIGN(size, __alignof__(struct nft_expr))) | |
649 | ||
650 | /** | |
651 | * struct nft_expr - nf_tables expression | |
652 | * | |
653 | * @ops: expression ops | |
654 | * @data: expression private data | |
655 | */ | |
656 | struct nft_expr { | |
657 | const struct nft_expr_ops *ops; | |
658 | unsigned char data[]; | |
659 | }; | |
660 | ||
661 | static inline void *nft_expr_priv(const struct nft_expr *expr) | |
662 | { | |
663 | return (void *)expr->data; | |
664 | } | |
665 | ||
0b2d8a7b PM |
666 | struct nft_expr *nft_expr_init(const struct nft_ctx *ctx, |
667 | const struct nlattr *nla); | |
668 | void nft_expr_destroy(const struct nft_ctx *ctx, struct nft_expr *expr); | |
669 | int nft_expr_dump(struct sk_buff *skb, unsigned int attr, | |
670 | const struct nft_expr *expr); | |
671 | ||
086f3321 | 672 | static inline int nft_expr_clone(struct nft_expr *dst, struct nft_expr *src) |
0b2d8a7b | 673 | { |
086f3321 PNA |
674 | int err; |
675 | ||
0b2d8a7b | 676 | __module_get(src->ops->type->owner); |
086f3321 PNA |
677 | if (src->ops->clone) { |
678 | dst->ops = src->ops; | |
679 | err = src->ops->clone(dst, src); | |
680 | if (err < 0) | |
681 | return err; | |
682 | } else { | |
683 | memcpy(dst, src, src->ops->size); | |
684 | } | |
685 | return 0; | |
0b2d8a7b PM |
686 | } |
687 | ||
96518518 PM |
688 | /** |
689 | * struct nft_rule - nf_tables rule | |
690 | * | |
691 | * @list: used internally | |
96518518 | 692 | * @handle: rule handle |
0628b123 | 693 | * @genmask: generation mask |
96518518 | 694 | * @dlen: length of expression data |
86f1ec32 | 695 | * @udata: user data is appended to the rule |
96518518 PM |
696 | * @data: expression data |
697 | */ | |
698 | struct nft_rule { | |
699 | struct list_head list; | |
0768b3b3 | 700 | u64 handle:42, |
0628b123 | 701 | genmask:2, |
0768b3b3 | 702 | dlen:12, |
86f1ec32 | 703 | udata:1; |
96518518 PM |
704 | unsigned char data[] |
705 | __attribute__((aligned(__alignof__(struct nft_expr)))); | |
706 | }; | |
707 | ||
708 | static inline struct nft_expr *nft_expr_first(const struct nft_rule *rule) | |
709 | { | |
710 | return (struct nft_expr *)&rule->data[0]; | |
711 | } | |
712 | ||
713 | static inline struct nft_expr *nft_expr_next(const struct nft_expr *expr) | |
714 | { | |
715 | return ((void *)expr) + expr->ops->size; | |
716 | } | |
717 | ||
718 | static inline struct nft_expr *nft_expr_last(const struct nft_rule *rule) | |
719 | { | |
720 | return (struct nft_expr *)&rule->data[rule->dlen]; | |
721 | } | |
722 | ||
86f1ec32 | 723 | static inline struct nft_userdata *nft_userdata(const struct nft_rule *rule) |
0768b3b3 PNA |
724 | { |
725 | return (void *)&rule->data[rule->dlen]; | |
726 | } | |
727 | ||
96518518 PM |
728 | /* |
729 | * The last pointer isn't really necessary, but the compiler isn't able to | |
730 | * determine that the result of nft_expr_last() is always the same since it | |
731 | * can't assume that the dlen value wasn't changed within calls in the loop. | |
732 | */ | |
733 | #define nft_rule_for_each_expr(expr, last, rule) \ | |
734 | for ((expr) = nft_expr_first(rule), (last) = nft_expr_last(rule); \ | |
735 | (expr) != (last); \ | |
736 | (expr) = nft_expr_next(expr)) | |
737 | ||
738 | enum nft_chain_flags { | |
739 | NFT_BASE_CHAIN = 0x1, | |
96518518 PM |
740 | }; |
741 | ||
742 | /** | |
743 | * struct nft_chain - nf_tables chain | |
744 | * | |
745 | * @rules: list of rules in the chain | |
746 | * @list: used internally | |
b5bc89bf | 747 | * @table: table that this chain belongs to |
96518518 | 748 | * @handle: chain handle |
96518518 PM |
749 | * @use: number of jump references to this chain |
750 | * @level: length of longest path to this chain | |
a0a7379e | 751 | * @flags: bitmask of enum nft_chain_flags |
96518518 PM |
752 | * @name: name of the chain |
753 | */ | |
754 | struct nft_chain { | |
755 | struct list_head rules; | |
756 | struct list_head list; | |
b5bc89bf | 757 | struct nft_table *table; |
96518518 | 758 | u64 handle; |
a0a7379e | 759 | u32 use; |
96518518 | 760 | u16 level; |
664b0f8c PNA |
761 | u8 flags:6, |
762 | genmask:2; | |
96518518 PM |
763 | char name[NFT_CHAIN_MAXNAMELEN]; |
764 | }; | |
765 | ||
9370761c PNA |
766 | enum nft_chain_type { |
767 | NFT_CHAIN_T_DEFAULT = 0, | |
768 | NFT_CHAIN_T_ROUTE, | |
769 | NFT_CHAIN_T_NAT, | |
770 | NFT_CHAIN_T_MAX | |
771 | }; | |
772 | ||
1a1e1a12 PM |
773 | /** |
774 | * struct nf_chain_type - nf_tables chain type info | |
775 | * | |
776 | * @name: name of the type | |
777 | * @type: numeric identifier | |
778 | * @family: address family | |
779 | * @owner: module owner | |
780 | * @hook_mask: mask of valid hooks | |
781 | * @hooks: hookfn overrides | |
782 | */ | |
783 | struct nf_chain_type { | |
784 | const char *name; | |
785 | enum nft_chain_type type; | |
786 | int family; | |
787 | struct module *owner; | |
788 | unsigned int hook_mask; | |
789 | nf_hookfn *hooks[NF_MAX_HOOKS]; | |
790 | }; | |
791 | ||
7210e4e3 PNA |
792 | int nft_chain_validate_dependency(const struct nft_chain *chain, |
793 | enum nft_chain_type type); | |
75e8d06d PNA |
794 | int nft_chain_validate_hooks(const struct nft_chain *chain, |
795 | unsigned int hook_flags); | |
7210e4e3 | 796 | |
0ca743a5 | 797 | struct nft_stats { |
ce355e20 ED |
798 | u64 bytes; |
799 | u64 pkts; | |
800 | struct u64_stats_sync syncp; | |
0ca743a5 PNA |
801 | }; |
802 | ||
115a60b1 PM |
803 | #define NFT_HOOK_OPS_MAX 2 |
804 | ||
96518518 PM |
805 | /** |
806 | * struct nft_base_chain - nf_tables base chain | |
807 | * | |
808 | * @ops: netfilter hook ops | |
9370761c | 809 | * @type: chain type |
0ca743a5 PNA |
810 | * @policy: default policy |
811 | * @stats: per-cpu chain stats | |
96518518 | 812 | * @chain: the chain |
2cbce139 | 813 | * @dev_name: device name that this base chain is attached to (if any) |
96518518 PM |
814 | */ |
815 | struct nft_base_chain { | |
115a60b1 | 816 | struct nf_hook_ops ops[NFT_HOOK_OPS_MAX]; |
2a37d755 | 817 | const struct nf_chain_type *type; |
0ca743a5 | 818 | u8 policy; |
835b8033 | 819 | u8 flags; |
0ca743a5 | 820 | struct nft_stats __percpu *stats; |
96518518 | 821 | struct nft_chain chain; |
2cbce139 | 822 | char dev_name[IFNAMSIZ]; |
96518518 PM |
823 | }; |
824 | ||
825 | static inline struct nft_base_chain *nft_base_chain(const struct nft_chain *chain) | |
826 | { | |
827 | return container_of(chain, struct nft_base_chain, chain); | |
828 | } | |
829 | ||
5ebe0b0e | 830 | int __nft_release_basechain(struct nft_ctx *ctx); |
835b8033 | 831 | |
06198b34 | 832 | unsigned int nft_do_chain(struct nft_pktinfo *pkt, void *priv); |
96518518 | 833 | |
96518518 PM |
834 | /** |
835 | * struct nft_table - nf_tables table | |
836 | * | |
837 | * @list: used internally | |
838 | * @chains: chains in the table | |
839 | * @sets: sets in the table | |
840 | * @hgenerator: handle generator state | |
841 | * @use: number of chain references to this table | |
842 | * @flags: table flag (see enum nft_table_flags) | |
f2a6d766 | 843 | * @genmask: generation mask |
96518518 PM |
844 | * @name: name of the table |
845 | */ | |
846 | struct nft_table { | |
847 | struct list_head list; | |
848 | struct list_head chains; | |
849 | struct list_head sets; | |
850 | u64 hgenerator; | |
851 | u32 use; | |
f2a6d766 PNA |
852 | u16 flags:14, |
853 | genmask:2; | |
1cae565e | 854 | char name[NFT_TABLE_MAXNAMELEN]; |
ebddf1a8 PNA |
855 | }; |
856 | ||
857 | enum nft_af_flags { | |
858 | NFT_AF_NEEDS_DEV = (1 << 0), | |
96518518 PM |
859 | }; |
860 | ||
861 | /** | |
862 | * struct nft_af_info - nf_tables address family info | |
863 | * | |
864 | * @list: used internally | |
865 | * @family: address family | |
866 | * @nhooks: number of hooks in this family | |
867 | * @owner: module owner | |
868 | * @tables: used internally | |
ebddf1a8 | 869 | * @flags: family flags |
115a60b1 PM |
870 | * @nops: number of hook ops in this family |
871 | * @hook_ops_init: initialization function for chain hook ops | |
96518518 PM |
872 | * @hooks: hookfn overrides for packet validation |
873 | */ | |
874 | struct nft_af_info { | |
875 | struct list_head list; | |
876 | int family; | |
877 | unsigned int nhooks; | |
878 | struct module *owner; | |
879 | struct list_head tables; | |
ebddf1a8 | 880 | u32 flags; |
115a60b1 PM |
881 | unsigned int nops; |
882 | void (*hook_ops_init)(struct nf_hook_ops *, | |
883 | unsigned int); | |
96518518 PM |
884 | nf_hookfn *hooks[NF_MAX_HOOKS]; |
885 | }; | |
886 | ||
5eccdfaa | 887 | int nft_register_afinfo(struct net *, struct nft_af_info *); |
df05ef87 | 888 | void nft_unregister_afinfo(struct net *, struct nft_af_info *); |
96518518 | 889 | |
2a37d755 PM |
890 | int nft_register_chain_type(const struct nf_chain_type *); |
891 | void nft_unregister_chain_type(const struct nf_chain_type *); | |
96518518 | 892 | |
5eccdfaa JP |
893 | int nft_register_expr(struct nft_expr_type *); |
894 | void nft_unregister_expr(struct nft_expr_type *); | |
96518518 | 895 | |
33d5a7b1 FW |
896 | int nft_verdict_dump(struct sk_buff *skb, int type, |
897 | const struct nft_verdict *v); | |
898 | ||
899 | /** | |
900 | * struct nft_traceinfo - nft tracing information and state | |
901 | * | |
902 | * @pkt: pktinfo currently processed | |
903 | * @basechain: base chain currently processed | |
904 | * @chain: chain currently processed | |
905 | * @rule: rule that was evaluated | |
906 | * @verdict: verdict given by rule | |
907 | * @type: event type (enum nft_trace_types) | |
908 | * @packet_dumped: packet headers sent in a previous traceinfo message | |
909 | * @trace: other struct members are initialised | |
910 | */ | |
911 | struct nft_traceinfo { | |
912 | const struct nft_pktinfo *pkt; | |
913 | const struct nft_base_chain *basechain; | |
914 | const struct nft_chain *chain; | |
915 | const struct nft_rule *rule; | |
916 | const struct nft_verdict *verdict; | |
917 | enum nft_trace_types type; | |
918 | bool packet_dumped; | |
919 | bool trace; | |
920 | }; | |
921 | ||
922 | void nft_trace_init(struct nft_traceinfo *info, const struct nft_pktinfo *pkt, | |
923 | const struct nft_verdict *verdict, | |
924 | const struct nft_chain *basechain); | |
925 | ||
926 | void nft_trace_notify(struct nft_traceinfo *info); | |
927 | ||
67a8fc27 PM |
928 | #define nft_dereference(p) \ |
929 | nfnl_dereference(p, NFNL_SUBSYS_NFTABLES) | |
930 | ||
96518518 PM |
931 | #define MODULE_ALIAS_NFT_FAMILY(family) \ |
932 | MODULE_ALIAS("nft-afinfo-" __stringify(family)) | |
933 | ||
9370761c PNA |
934 | #define MODULE_ALIAS_NFT_CHAIN(family, name) \ |
935 | MODULE_ALIAS("nft-chain-" __stringify(family) "-" name) | |
96518518 | 936 | |
64d46806 PM |
937 | #define MODULE_ALIAS_NFT_AF_EXPR(family, name) \ |
938 | MODULE_ALIAS("nft-expr-" __stringify(family) "-" name) | |
939 | ||
96518518 PM |
940 | #define MODULE_ALIAS_NFT_EXPR(name) \ |
941 | MODULE_ALIAS("nft-expr-" name) | |
942 | ||
20a69341 PM |
943 | #define MODULE_ALIAS_NFT_SET() \ |
944 | MODULE_ALIAS("nft-set") | |
945 | ||
ea4bd995 PM |
946 | /* |
947 | * The gencursor defines two generations, the currently active and the | |
948 | * next one. Objects contain a bitmask of 2 bits specifying the generations | |
949 | * they're active in. A set bit means they're inactive in the generation | |
950 | * represented by that bit. | |
951 | * | |
952 | * New objects start out as inactive in the current and active in the | |
953 | * next generation. When committing the ruleset the bitmask is cleared, | |
954 | * meaning they're active in all generations. When removing an object, | |
955 | * it is set inactive in the next generation. After committing the ruleset, | |
956 | * the objects are removed. | |
957 | */ | |
958 | static inline unsigned int nft_gencursor_next(const struct net *net) | |
959 | { | |
960 | return net->nft.gencursor + 1 == 1 ? 1 : 0; | |
961 | } | |
962 | ||
963 | static inline u8 nft_genmask_next(const struct net *net) | |
964 | { | |
965 | return 1 << nft_gencursor_next(net); | |
966 | } | |
967 | ||
968 | static inline u8 nft_genmask_cur(const struct net *net) | |
969 | { | |
970 | /* Use ACCESS_ONCE() to prevent refetching the value for atomicity */ | |
971 | return 1 << ACCESS_ONCE(net->nft.gencursor); | |
972 | } | |
973 | ||
22fe54d5 PM |
974 | #define NFT_GENMASK_ANY ((1 << 0) | (1 << 1)) |
975 | ||
889f7ee7 PNA |
976 | /* |
977 | * Generic transaction helpers | |
978 | */ | |
979 | ||
980 | /* Check if this object is currently active. */ | |
981 | #define nft_is_active(__net, __obj) \ | |
982 | (((__obj)->genmask & nft_genmask_cur(__net)) == 0) | |
983 | ||
984 | /* Check if this object is active in the next generation. */ | |
985 | #define nft_is_active_next(__net, __obj) \ | |
986 | (((__obj)->genmask & nft_genmask_next(__net)) == 0) | |
987 | ||
988 | /* This object becomes active in the next generation. */ | |
989 | #define nft_activate_next(__net, __obj) \ | |
990 | (__obj)->genmask = nft_genmask_cur(__net) | |
991 | ||
992 | /* This object becomes inactive in the next generation. */ | |
993 | #define nft_deactivate_next(__net, __obj) \ | |
994 | (__obj)->genmask = nft_genmask_next(__net) | |
995 | ||
996 | /* After committing the ruleset, clear the stale generation bit. */ | |
997 | #define nft_clear(__net, __obj) \ | |
998 | (__obj)->genmask &= ~nft_genmask_next(__net) | |
f2a6d766 PNA |
999 | #define nft_active_genmask(__obj, __genmask) \ |
1000 | !((__obj)->genmask & __genmask) | |
889f7ee7 | 1001 | |
cc02e457 PM |
1002 | /* |
1003 | * Set element transaction helpers | |
1004 | */ | |
1005 | ||
1006 | static inline bool nft_set_elem_active(const struct nft_set_ext *ext, | |
1007 | u8 genmask) | |
1008 | { | |
1009 | return !(ext->genmask & genmask); | |
1010 | } | |
1011 | ||
42a55769 PNA |
1012 | static inline void nft_set_elem_change_active(const struct net *net, |
1013 | const struct nft_set *set, | |
cc02e457 PM |
1014 | struct nft_set_ext *ext) |
1015 | { | |
42a55769 | 1016 | ext->genmask ^= nft_genmask_next(net); |
cc02e457 PM |
1017 | } |
1018 | ||
69086658 PM |
1019 | /* |
1020 | * We use a free bit in the genmask field to indicate the element | |
1021 | * is busy, meaning it is currently being processed either by | |
1022 | * the netlink API or GC. | |
1023 | * | |
1024 | * Even though the genmask is only a single byte wide, this works | |
1025 | * because the extension structure if fully constant once initialized, | |
1026 | * so there are no non-atomic write accesses unless it is already | |
1027 | * marked busy. | |
1028 | */ | |
1029 | #define NFT_SET_ELEM_BUSY_MASK (1 << 2) | |
1030 | ||
1031 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
1032 | #define NFT_SET_ELEM_BUSY_BIT 2 | |
1033 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
1034 | #define NFT_SET_ELEM_BUSY_BIT (BITS_PER_LONG - BITS_PER_BYTE + 2) | |
1035 | #else | |
1036 | #error | |
1037 | #endif | |
1038 | ||
1039 | static inline int nft_set_elem_mark_busy(struct nft_set_ext *ext) | |
1040 | { | |
1041 | unsigned long *word = (unsigned long *)ext; | |
1042 | ||
1043 | BUILD_BUG_ON(offsetof(struct nft_set_ext, genmask) != 0); | |
1044 | return test_and_set_bit(NFT_SET_ELEM_BUSY_BIT, word); | |
1045 | } | |
1046 | ||
1047 | static inline void nft_set_elem_clear_busy(struct nft_set_ext *ext) | |
1048 | { | |
1049 | unsigned long *word = (unsigned long *)ext; | |
1050 | ||
1051 | clear_bit(NFT_SET_ELEM_BUSY_BIT, word); | |
1052 | } | |
1053 | ||
1a1e1a12 PM |
1054 | /** |
1055 | * struct nft_trans - nf_tables object update in transaction | |
1056 | * | |
1057 | * @list: used internally | |
1058 | * @msg_type: message type | |
1059 | * @ctx: transaction context | |
1060 | * @data: internal information related to the transaction | |
1061 | */ | |
1062 | struct nft_trans { | |
1063 | struct list_head list; | |
1064 | int msg_type; | |
1065 | struct nft_ctx ctx; | |
1066 | char data[0]; | |
1067 | }; | |
1068 | ||
1069 | struct nft_trans_rule { | |
1070 | struct nft_rule *rule; | |
1071 | }; | |
1072 | ||
1073 | #define nft_trans_rule(trans) \ | |
1074 | (((struct nft_trans_rule *)trans->data)->rule) | |
1075 | ||
1076 | struct nft_trans_set { | |
1077 | struct nft_set *set; | |
1078 | u32 set_id; | |
1079 | }; | |
1080 | ||
1081 | #define nft_trans_set(trans) \ | |
1082 | (((struct nft_trans_set *)trans->data)->set) | |
1083 | #define nft_trans_set_id(trans) \ | |
1084 | (((struct nft_trans_set *)trans->data)->set_id) | |
1085 | ||
1086 | struct nft_trans_chain { | |
1087 | bool update; | |
1088 | char name[NFT_CHAIN_MAXNAMELEN]; | |
1089 | struct nft_stats __percpu *stats; | |
1090 | u8 policy; | |
1091 | }; | |
1092 | ||
1093 | #define nft_trans_chain_update(trans) \ | |
1094 | (((struct nft_trans_chain *)trans->data)->update) | |
1095 | #define nft_trans_chain_name(trans) \ | |
1096 | (((struct nft_trans_chain *)trans->data)->name) | |
1097 | #define nft_trans_chain_stats(trans) \ | |
1098 | (((struct nft_trans_chain *)trans->data)->stats) | |
1099 | #define nft_trans_chain_policy(trans) \ | |
1100 | (((struct nft_trans_chain *)trans->data)->policy) | |
1101 | ||
1102 | struct nft_trans_table { | |
1103 | bool update; | |
1104 | bool enable; | |
1105 | }; | |
1106 | ||
1107 | #define nft_trans_table_update(trans) \ | |
1108 | (((struct nft_trans_table *)trans->data)->update) | |
1109 | #define nft_trans_table_enable(trans) \ | |
1110 | (((struct nft_trans_table *)trans->data)->enable) | |
1111 | ||
1112 | struct nft_trans_elem { | |
1113 | struct nft_set *set; | |
1114 | struct nft_set_elem elem; | |
1115 | }; | |
1116 | ||
1117 | #define nft_trans_elem_set(trans) \ | |
1118 | (((struct nft_trans_elem *)trans->data)->set) | |
1119 | #define nft_trans_elem(trans) \ | |
1120 | (((struct nft_trans_elem *)trans->data)->elem) | |
1121 | ||
96518518 | 1122 | #endif /* _NET_NF_TABLES_H */ |