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ip_fw_private.h (261117) ip_fw_private.h (272840)
1/*-
2 * Copyright (c) 2002-2009 Luigi Rizzo, Universita` di Pisa
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.

--- 8 unchanged lines hidden (view full) ---

17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
1/*-
2 * Copyright (c) 2002-2009 Luigi Rizzo, Universita` di Pisa
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.

--- 8 unchanged lines hidden (view full) ---

17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 * $FreeBSD: head/sys/netpfil/ipfw/ip_fw_private.h 261117 2014-01-24 09:13:30Z melifaro $
25 * $FreeBSD: head/sys/netpfil/ipfw/ip_fw_private.h 272840 2014-10-09 19:32:35Z melifaro $
26 */
27
28#ifndef _IPFW2_PRIVATE_H
29#define _IPFW2_PRIVATE_H
30
31/*
32 * Internal constants and data structures used by ipfw components
33 * and not meant to be exported outside the kernel.

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147/* attach (arg = 1) or detach (arg = 0) hooks */
148int ipfw_attach_hooks(int);
149#ifdef NOTYET
150void ipfw_nat_destroy(void);
151#endif
152
153/* In ip_fw_log.c */
154struct ip;
26 */
27
28#ifndef _IPFW2_PRIVATE_H
29#define _IPFW2_PRIVATE_H
30
31/*
32 * Internal constants and data structures used by ipfw components
33 * and not meant to be exported outside the kernel.

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147/* attach (arg = 1) or detach (arg = 0) hooks */
148int ipfw_attach_hooks(int);
149#ifdef NOTYET
150void ipfw_nat_destroy(void);
151#endif
152
153/* In ip_fw_log.c */
154struct ip;
155struct ip_fw_chain;
155void ipfw_log_bpf(int);
156void ipfw_log_bpf(int);
156void ipfw_log(struct ip_fw *f, u_int hlen, struct ip_fw_args *args,
157 struct mbuf *m, struct ifnet *oif, u_short offset, uint32_t tablearg,
158 struct ip *ip);
157void ipfw_log(struct ip_fw_chain *chain, struct ip_fw *f, u_int hlen,
158 struct ip_fw_args *args, struct mbuf *m, struct ifnet *oif,
159 u_short offset, uint32_t tablearg, struct ip *ip);
159VNET_DECLARE(u_int64_t, norule_counter);
160#define V_norule_counter VNET(norule_counter)
161VNET_DECLARE(int, verbose_limit);
162#define V_verbose_limit VNET(verbose_limit)
163
164/* In ip_fw_dynamic.c */
165
166enum { /* result for matching dynamic rules */

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171};
172
173/*
174 * The lock for dynamic rules is only used once outside the file,
175 * and only to release the result of lookup_dyn_rule().
176 * Eventually we may implement it with a callback on the function.
177 */
178struct ip_fw_chain;
160VNET_DECLARE(u_int64_t, norule_counter);
161#define V_norule_counter VNET(norule_counter)
162VNET_DECLARE(int, verbose_limit);
163#define V_verbose_limit VNET(verbose_limit)
164
165/* In ip_fw_dynamic.c */
166
167enum { /* result for matching dynamic rules */

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172};
173
174/*
175 * The lock for dynamic rules is only used once outside the file,
176 * and only to release the result of lookup_dyn_rule().
177 * Eventually we may implement it with a callback on the function.
178 */
179struct ip_fw_chain;
179void ipfw_expire_dyn_rules(struct ip_fw_chain *, struct ip_fw *, int);
180struct sockopt_data;
181int ipfw_is_dyn_rule(struct ip_fw *rule);
182void ipfw_expire_dyn_rules(struct ip_fw_chain *, ipfw_range_tlv *);
180void ipfw_dyn_unlock(ipfw_dyn_rule *q);
181
182struct tcphdr;
183struct mbuf *ipfw_send_pkt(struct mbuf *, struct ipfw_flow_id *,
184 u_int32_t, u_int32_t, int);
183void ipfw_dyn_unlock(ipfw_dyn_rule *q);
184
185struct tcphdr;
186struct mbuf *ipfw_send_pkt(struct mbuf *, struct ipfw_flow_id *,
187 u_int32_t, u_int32_t, int);
185int ipfw_install_state(struct ip_fw *rule, ipfw_insn_limit *cmd,
186 struct ip_fw_args *args, uint32_t tablearg);
188int ipfw_install_state(struct ip_fw_chain *chain, struct ip_fw *rule,
189 ipfw_insn_limit *cmd, struct ip_fw_args *args, uint32_t tablearg);
187ipfw_dyn_rule *ipfw_lookup_dyn_rule(struct ipfw_flow_id *pkt,
188 int *match_direction, struct tcphdr *tcp);
189void ipfw_remove_dyn_children(struct ip_fw *rule);
190void ipfw_get_dynamic(struct ip_fw_chain *chain, char **bp, const char *ep);
190ipfw_dyn_rule *ipfw_lookup_dyn_rule(struct ipfw_flow_id *pkt,
191 int *match_direction, struct tcphdr *tcp);
192void ipfw_remove_dyn_children(struct ip_fw *rule);
193void ipfw_get_dynamic(struct ip_fw_chain *chain, char **bp, const char *ep);
194int ipfw_dump_states(struct ip_fw_chain *chain, struct sockopt_data *sd);
191
192void ipfw_dyn_init(struct ip_fw_chain *); /* per-vnet initialization */
193void ipfw_dyn_uninit(int); /* per-vnet deinitialization */
194int ipfw_dyn_len(void);
195
196void ipfw_dyn_init(struct ip_fw_chain *); /* per-vnet initialization */
197void ipfw_dyn_uninit(int); /* per-vnet deinitialization */
198int ipfw_dyn_len(void);
199int ipfw_dyn_get_count(void);
195
196/* common variables */
197VNET_DECLARE(int, fw_one_pass);
198#define V_fw_one_pass VNET(fw_one_pass)
199
200VNET_DECLARE(int, fw_verbose);
201#define V_fw_verbose VNET(fw_verbose)
202
203VNET_DECLARE(struct ip_fw_chain, layer3_chain);
204#define V_layer3_chain VNET(layer3_chain)
205
200
201/* common variables */
202VNET_DECLARE(int, fw_one_pass);
203#define V_fw_one_pass VNET(fw_one_pass)
204
205VNET_DECLARE(int, fw_verbose);
206#define V_fw_verbose VNET(fw_verbose)
207
208VNET_DECLARE(struct ip_fw_chain, layer3_chain);
209#define V_layer3_chain VNET(layer3_chain)
210
211VNET_DECLARE(int, ipfw_vnet_ready);
212#define V_ipfw_vnet_ready VNET(ipfw_vnet_ready)
213
206VNET_DECLARE(u_int32_t, set_disable);
207#define V_set_disable VNET(set_disable)
208
209VNET_DECLARE(int, autoinc_step);
210#define V_autoinc_step VNET(autoinc_step)
211
212VNET_DECLARE(unsigned int, fw_tables_max);
213#define V_fw_tables_max VNET(fw_tables_max)
214
214VNET_DECLARE(u_int32_t, set_disable);
215#define V_set_disable VNET(set_disable)
216
217VNET_DECLARE(int, autoinc_step);
218#define V_autoinc_step VNET(autoinc_step)
219
220VNET_DECLARE(unsigned int, fw_tables_max);
221#define V_fw_tables_max VNET(fw_tables_max)
222
223VNET_DECLARE(unsigned int, fw_tables_sets);
224#define V_fw_tables_sets VNET(fw_tables_sets)
225
226struct tables_config;
227
228#ifdef _KERNEL
229typedef struct ip_fw_cntr {
230 uint64_t pcnt; /* Packet counter */
231 uint64_t bcnt; /* Byte counter */
232 uint64_t timestamp; /* tv_sec of last match */
233} ip_fw_cntr;
234
235/*
236 * Here we have the structure representing an ipfw rule.
237 *
238 * It starts with a general area
239 * followed by an array of one or more instructions, which the code
240 * accesses as an array of 32-bit values.
241 *
242 * Given a rule pointer r:
243 *
244 * r->cmd is the start of the first instruction.
245 * ACTION_PTR(r) is the start of the first action (things to do
246 * once a rule matched).
247 */
248
249struct ip_fw {
250 uint16_t act_ofs; /* offset of action in 32-bit units */
251 uint16_t cmd_len; /* # of 32-bit words in cmd */
252 uint16_t rulenum; /* rule number */
253 uint8_t set; /* rule set (0..31) */
254 uint8_t flags; /* currently unused */
255 counter_u64_t cntr; /* Pointer to rule counters */
256 uint32_t timestamp; /* tv_sec of last match */
257 uint32_t id; /* rule id */
258 uint32_t cached_id; /* used by jump_fast */
259 uint32_t cached_pos; /* used by jump_fast */
260
261 ipfw_insn cmd[1]; /* storage for commands */
262};
263
264#endif
265
215struct ip_fw_chain {
216 struct ip_fw **map; /* array of rule ptrs to ease lookup */
217 uint32_t id; /* ruleset id */
218 int n_rules; /* number of static rules */
219 LIST_HEAD(nat_list, cfg_nat) nat; /* list of nat entries */
266struct ip_fw_chain {
267 struct ip_fw **map; /* array of rule ptrs to ease lookup */
268 uint32_t id; /* ruleset id */
269 int n_rules; /* number of static rules */
270 LIST_HEAD(nat_list, cfg_nat) nat; /* list of nat entries */
220 struct radix_node_head **tables; /* IPv4 tables */
221 struct radix_node_head **xtables; /* extended tables */
222 uint8_t *tabletype; /* Array of table types */
271 void *tablestate; /* runtime table info */
272 void *valuestate; /* runtime table value info */
273 int *idxmap; /* skipto array of rules */
223#if defined( __linux__ ) || defined( _WIN32 )
224 spinlock_t rwmtx;
225#else
274#if defined( __linux__ ) || defined( _WIN32 )
275 spinlock_t rwmtx;
276#else
226 struct rwlock rwmtx;
277 struct rmlock rwmtx;
227#endif
278#endif
228 int static_len; /* total len of static rules */
279 int static_len; /* total len of static rules (v0) */
229 uint32_t gencnt; /* NAT generation count */
280 uint32_t gencnt; /* NAT generation count */
230 struct ip_fw *reap; /* list of rules to reap */
231 struct ip_fw *default_rule;
281 struct ip_fw *default_rule;
282 struct tables_config *tblcfg; /* tables module data */
283 void *ifcfg; /* interface module data */
284 int *idxmap_back; /* standby skipto array of rules */
232#if defined( __linux__ ) || defined( _WIN32 )
233 spinlock_t uh_lock;
234#else
235 struct rwlock uh_lock; /* lock for upper half */
236#endif
237};
238
285#if defined( __linux__ ) || defined( _WIN32 )
286 spinlock_t uh_lock;
287#else
288 struct rwlock uh_lock; /* lock for upper half */
289#endif
290};
291
292/* 64-byte structure representing multi-field table value */
293struct table_value {
294 uint32_t tag; /* O_TAG/O_TAGGED */
295 uint32_t pipe; /* O_PIPE/O_QUEUE */
296 uint16_t divert; /* O_DIVERT/O_TEE */
297 uint16_t skipto; /* skipto, CALLRET */
298 uint32_t netgraph; /* O_NETGRAPH/O_NGTEE */
299 uint32_t fib; /* O_SETFIB */
300 uint32_t nat; /* O_NAT */
301 uint32_t nh4;
302 uint8_t dscp;
303 uint8_t spare0[3];
304 /* -- 32 bytes -- */
305 struct in6_addr nh6;
306 uint32_t limit; /* O_LIMIT */
307 uint32_t spare1;
308 uint64_t refcnt; /* Number of references */
309};
310
311struct namedobj_instance;
312
313struct named_object {
314 TAILQ_ENTRY(named_object) nn_next; /* namehash */
315 TAILQ_ENTRY(named_object) nv_next; /* valuehash */
316 char *name; /* object name */
317 uint8_t type; /* object type */
318 uint8_t compat; /* Object name is number */
319 uint16_t kidx; /* object kernel index */
320 uint16_t uidx; /* userland idx for compat records */
321 uint32_t set; /* set object belongs to */
322 uint32_t refcnt; /* number of references */
323};
324TAILQ_HEAD(namedobjects_head, named_object);
325
239struct sockopt; /* used by tcp_var.h */
326struct sockopt; /* used by tcp_var.h */
327struct sockopt_data {
328 caddr_t kbuf; /* allocated buffer */
329 size_t ksize; /* given buffer size */
330 size_t koff; /* data already used */
331 size_t kavail; /* number of bytes available */
332 size_t ktotal; /* total bytes pushed */
333 struct sockopt *sopt; /* socket data */
334 caddr_t sopt_val; /* sopt user buffer */
335 size_t valsize; /* original data size */
336};
240
337
338struct ipfw_ifc;
339
340typedef void (ipfw_ifc_cb)(struct ip_fw_chain *ch, void *cbdata,
341 uint16_t ifindex);
342
343struct ipfw_iface {
344 struct named_object no;
345 char ifname[64];
346 int resolved;
347 uint16_t ifindex;
348 uint16_t spare;
349 uint64_t gencnt;
350 TAILQ_HEAD(, ipfw_ifc) consumers;
351};
352
353struct ipfw_ifc {
354 TAILQ_ENTRY(ipfw_ifc) next;
355 struct ipfw_iface *iface;
356 ipfw_ifc_cb *cb;
357 void *cbdata;
358};
359
241/* Macro for working with various counters */
360/* Macro for working with various counters */
361#ifdef USERSPACE
242#define IPFW_INC_RULE_COUNTER(_cntr, _bytes) do { \
243 (_cntr)->pcnt++; \
244 (_cntr)->bcnt += _bytes; \
245 (_cntr)->timestamp = time_uptime; \
246 } while (0)
247
248#define IPFW_INC_DYN_COUNTER(_cntr, _bytes) do { \
249 (_cntr)->pcnt++; \

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255 (_cntr)->bcnt = 0; \
256 (_cntr)->timestamp = 0; \
257 } while (0)
258
259#define IPFW_ZERO_DYN_COUNTER(_cntr) do { \
260 (_cntr)->pcnt = 0; \
261 (_cntr)->bcnt = 0; \
262 } while (0)
362#define IPFW_INC_RULE_COUNTER(_cntr, _bytes) do { \
363 (_cntr)->pcnt++; \
364 (_cntr)->bcnt += _bytes; \
365 (_cntr)->timestamp = time_uptime; \
366 } while (0)
367
368#define IPFW_INC_DYN_COUNTER(_cntr, _bytes) do { \
369 (_cntr)->pcnt++; \

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375 (_cntr)->bcnt = 0; \
376 (_cntr)->timestamp = 0; \
377 } while (0)
378
379#define IPFW_ZERO_DYN_COUNTER(_cntr) do { \
380 (_cntr)->pcnt = 0; \
381 (_cntr)->bcnt = 0; \
382 } while (0)
383#else
384#define IPFW_INC_RULE_COUNTER(_cntr, _bytes) do { \
385 counter_u64_add((_cntr)->cntr, 1); \
386 counter_u64_add((_cntr)->cntr + 1, _bytes); \
387 if ((_cntr)->timestamp != time_uptime) \
388 (_cntr)->timestamp = time_uptime; \
389 } while (0)
263
390
264#define IP_FW_ARG_TABLEARG(a) (((a) == IP_FW_TABLEARG) ? tablearg : (a))
391#define IPFW_INC_DYN_COUNTER(_cntr, _bytes) do { \
392 (_cntr)->pcnt++; \
393 (_cntr)->bcnt += _bytes; \
394 } while (0)
395
396#define IPFW_ZERO_RULE_COUNTER(_cntr) do { \
397 counter_u64_zero((_cntr)->cntr); \
398 counter_u64_zero((_cntr)->cntr + 1); \
399 (_cntr)->timestamp = 0; \
400 } while (0)
401
402#define IPFW_ZERO_DYN_COUNTER(_cntr) do { \
403 (_cntr)->pcnt = 0; \
404 (_cntr)->bcnt = 0; \
405 } while (0)
406#endif
407
408#define TARG_VAL(ch, k, f) ((struct table_value *)((ch)->valuestate))[k].f
409#define IP_FW_ARG_TABLEARG(ch, a, f) \
410 (((a) == IP_FW_TARG) ? TARG_VAL(ch, tablearg, f) : (a))
265/*
266 * The lock is heavily used by ip_fw2.c (the main file) and ip_fw_nat.c
267 * so the variable and the macros must be here.
268 */
269
411/*
412 * The lock is heavily used by ip_fw2.c (the main file) and ip_fw_nat.c
413 * so the variable and the macros must be here.
414 */
415
416#if defined( __linux__ ) || defined( _WIN32 )
270#define IPFW_LOCK_INIT(_chain) do { \
271 rw_init(&(_chain)->rwmtx, "IPFW static rules"); \
272 rw_init(&(_chain)->uh_lock, "IPFW UH lock"); \
273 } while (0)
274
275#define IPFW_LOCK_DESTROY(_chain) do { \
276 rw_destroy(&(_chain)->rwmtx); \
277 rw_destroy(&(_chain)->uh_lock); \
278 } while (0)
279
280#define IPFW_RLOCK_ASSERT(_chain) rw_assert(&(_chain)->rwmtx, RA_RLOCKED)
281#define IPFW_WLOCK_ASSERT(_chain) rw_assert(&(_chain)->rwmtx, RA_WLOCKED)
282
417#define IPFW_LOCK_INIT(_chain) do { \
418 rw_init(&(_chain)->rwmtx, "IPFW static rules"); \
419 rw_init(&(_chain)->uh_lock, "IPFW UH lock"); \
420 } while (0)
421
422#define IPFW_LOCK_DESTROY(_chain) do { \
423 rw_destroy(&(_chain)->rwmtx); \
424 rw_destroy(&(_chain)->uh_lock); \
425 } while (0)
426
427#define IPFW_RLOCK_ASSERT(_chain) rw_assert(&(_chain)->rwmtx, RA_RLOCKED)
428#define IPFW_WLOCK_ASSERT(_chain) rw_assert(&(_chain)->rwmtx, RA_WLOCKED)
429
430#define IPFW_RLOCK_TRACKER
283#define IPFW_RLOCK(p) rw_rlock(&(p)->rwmtx)
284#define IPFW_RUNLOCK(p) rw_runlock(&(p)->rwmtx)
285#define IPFW_WLOCK(p) rw_wlock(&(p)->rwmtx)
286#define IPFW_WUNLOCK(p) rw_wunlock(&(p)->rwmtx)
287#define IPFW_PF_RLOCK(p) IPFW_RLOCK(p)
288#define IPFW_PF_RUNLOCK(p) IPFW_RUNLOCK(p)
431#define IPFW_RLOCK(p) rw_rlock(&(p)->rwmtx)
432#define IPFW_RUNLOCK(p) rw_runlock(&(p)->rwmtx)
433#define IPFW_WLOCK(p) rw_wlock(&(p)->rwmtx)
434#define IPFW_WUNLOCK(p) rw_wunlock(&(p)->rwmtx)
435#define IPFW_PF_RLOCK(p) IPFW_RLOCK(p)
436#define IPFW_PF_RUNLOCK(p) IPFW_RUNLOCK(p)
437#else /* FreeBSD */
438#define IPFW_LOCK_INIT(_chain) do { \
439 rm_init(&(_chain)->rwmtx, "IPFW static rules"); \
440 rw_init(&(_chain)->uh_lock, "IPFW UH lock"); \
441 } while (0)
289
442
443#define IPFW_LOCK_DESTROY(_chain) do { \
444 rm_destroy(&(_chain)->rwmtx); \
445 rw_destroy(&(_chain)->uh_lock); \
446 } while (0)
447
448#define IPFW_RLOCK_ASSERT(_chain) rm_assert(&(_chain)->rwmtx, RA_RLOCKED)
449#define IPFW_WLOCK_ASSERT(_chain) rm_assert(&(_chain)->rwmtx, RA_WLOCKED)
450
451#define IPFW_RLOCK_TRACKER struct rm_priotracker _tracker
452#define IPFW_RLOCK(p) rm_rlock(&(p)->rwmtx, &_tracker)
453#define IPFW_RUNLOCK(p) rm_runlock(&(p)->rwmtx, &_tracker)
454#define IPFW_WLOCK(p) rm_wlock(&(p)->rwmtx)
455#define IPFW_WUNLOCK(p) rm_wunlock(&(p)->rwmtx)
456#define IPFW_PF_RLOCK(p) IPFW_RLOCK(p)
457#define IPFW_PF_RUNLOCK(p) IPFW_RUNLOCK(p)
458#endif
459
290#define IPFW_UH_RLOCK_ASSERT(_chain) rw_assert(&(_chain)->uh_lock, RA_RLOCKED)
291#define IPFW_UH_WLOCK_ASSERT(_chain) rw_assert(&(_chain)->uh_lock, RA_WLOCKED)
292
293#define IPFW_UH_RLOCK(p) rw_rlock(&(p)->uh_lock)
294#define IPFW_UH_RUNLOCK(p) rw_runlock(&(p)->uh_lock)
295#define IPFW_UH_WLOCK(p) rw_wlock(&(p)->uh_lock)
296#define IPFW_UH_WUNLOCK(p) rw_wunlock(&(p)->uh_lock)
297
460#define IPFW_UH_RLOCK_ASSERT(_chain) rw_assert(&(_chain)->uh_lock, RA_RLOCKED)
461#define IPFW_UH_WLOCK_ASSERT(_chain) rw_assert(&(_chain)->uh_lock, RA_WLOCKED)
462
463#define IPFW_UH_RLOCK(p) rw_rlock(&(p)->uh_lock)
464#define IPFW_UH_RUNLOCK(p) rw_runlock(&(p)->uh_lock)
465#define IPFW_UH_WLOCK(p) rw_wlock(&(p)->uh_lock)
466#define IPFW_UH_WUNLOCK(p) rw_wunlock(&(p)->uh_lock)
467
468struct obj_idx {
469 uint16_t uidx; /* internal index supplied by userland */
470 uint16_t kidx; /* kernel object index */
471 uint16_t off; /* tlv offset from rule end in 4-byte words */
472 uint8_t spare;
473 uint8_t type; /* object type within its category */
474};
475
476struct rule_check_info {
477 uint16_t flags; /* rule-specific check flags */
478 uint16_t table_opcodes; /* count of opcodes referencing table */
479 uint16_t urule_numoff; /* offset of rulenum in bytes */
480 uint8_t version; /* rule version */
481 uint8_t spare;
482 ipfw_obj_ctlv *ctlv; /* name TLV containter */
483 struct ip_fw *krule; /* resulting rule pointer */
484 caddr_t urule; /* original rule pointer */
485 struct obj_idx obuf[8]; /* table references storage */
486};
487
488/* Legacy interface support */
489/*
490 * FreeBSD 8 export rule format
491 */
492struct ip_fw_rule0 {
493 struct ip_fw *x_next; /* linked list of rules */
494 struct ip_fw *next_rule; /* ptr to next [skipto] rule */
495 /* 'next_rule' is used to pass up 'set_disable' status */
496
497 uint16_t act_ofs; /* offset of action in 32-bit units */
498 uint16_t cmd_len; /* # of 32-bit words in cmd */
499 uint16_t rulenum; /* rule number */
500 uint8_t set; /* rule set (0..31) */
501 uint8_t _pad; /* padding */
502 uint32_t id; /* rule id */
503
504 /* These fields are present in all rules. */
505 uint64_t pcnt; /* Packet counter */
506 uint64_t bcnt; /* Byte counter */
507 uint32_t timestamp; /* tv_sec of last match */
508
509 ipfw_insn cmd[1]; /* storage for commands */
510};
511
512struct ip_fw_bcounter0 {
513 uint64_t pcnt; /* Packet counter */
514 uint64_t bcnt; /* Byte counter */
515 uint32_t timestamp; /* tv_sec of last match */
516};
517
518/* Kernel rule length */
519/*
520 * RULE _K_ SIZE _V_ ->
521 * get kernel size from userland rool version _V_.
522 * RULE _U_ SIZE _V_ ->
523 * get user size version _V_ from kernel rule
524 * RULESIZE _V_ ->
525 * get user size rule length
526 */
527/* FreeBSD8 <> current kernel format */
528#define RULEUSIZE0(r) (sizeof(struct ip_fw_rule0) + (r)->cmd_len * 4 - 4)
529#define RULEKSIZE0(r) roundup2((sizeof(struct ip_fw) + (r)->cmd_len*4 - 4), 8)
530/* FreeBSD11 <> current kernel format */
531#define RULEUSIZE1(r) (roundup2(sizeof(struct ip_fw_rule) + \
532 (r)->cmd_len * 4 - 4, 8))
533#define RULEKSIZE1(r) roundup2((sizeof(struct ip_fw) + (r)->cmd_len*4 - 4), 8)
534
535
536/* In ip_fw_iface.c */
537int ipfw_iface_init(void);
538void ipfw_iface_destroy(void);
539void vnet_ipfw_iface_destroy(struct ip_fw_chain *ch);
540int ipfw_iface_ref(struct ip_fw_chain *ch, char *name,
541 struct ipfw_ifc *ic);
542void ipfw_iface_unref(struct ip_fw_chain *ch, struct ipfw_ifc *ic);
543void ipfw_iface_add_notify(struct ip_fw_chain *ch, struct ipfw_ifc *ic);
544void ipfw_iface_del_notify(struct ip_fw_chain *ch, struct ipfw_ifc *ic);
545
298/* In ip_fw_sockopt.c */
546/* In ip_fw_sockopt.c */
547void ipfw_init_skipto_cache(struct ip_fw_chain *chain);
548void ipfw_destroy_skipto_cache(struct ip_fw_chain *chain);
299int ipfw_find_rule(struct ip_fw_chain *chain, uint32_t key, uint32_t id);
549int ipfw_find_rule(struct ip_fw_chain *chain, uint32_t key, uint32_t id);
300int ipfw_add_rule(struct ip_fw_chain *chain, struct ip_fw *input_rule);
301int ipfw_ctl(struct sockopt *sopt);
550int ipfw_ctl3(struct sockopt *sopt);
302int ipfw_chk(struct ip_fw_args *args);
551int ipfw_chk(struct ip_fw_args *args);
552void ipfw_reap_add(struct ip_fw_chain *chain, struct ip_fw **head,
553 struct ip_fw *rule);
303void ipfw_reap_rules(struct ip_fw *head);
554void ipfw_reap_rules(struct ip_fw *head);
555void ipfw_init_counters(void);
556void ipfw_destroy_counters(void);
557struct ip_fw *ipfw_alloc_rule(struct ip_fw_chain *chain, size_t rulesize);
558int ipfw_match_range(struct ip_fw *rule, ipfw_range_tlv *rt);
304
559
560typedef int (sopt_handler_f)(struct ip_fw_chain *ch,
561 ip_fw3_opheader *op3, struct sockopt_data *sd);
562struct ipfw_sopt_handler {
563 uint16_t opcode;
564 uint8_t version;
565 uint8_t dir;
566 sopt_handler_f *handler;
567 uint64_t refcnt;
568};
569#define HDIR_SET 0x01 /* Handler is used to set some data */
570#define HDIR_GET 0x02 /* Handler is used to retrieve data */
571#define HDIR_BOTH HDIR_GET|HDIR_SET
572
573void ipfw_init_sopt_handler(void);
574void ipfw_destroy_sopt_handler(void);
575void ipfw_add_sopt_handler(struct ipfw_sopt_handler *sh, size_t count);
576int ipfw_del_sopt_handler(struct ipfw_sopt_handler *sh, size_t count);
577caddr_t ipfw_get_sopt_space(struct sockopt_data *sd, size_t needed);
578caddr_t ipfw_get_sopt_header(struct sockopt_data *sd, size_t needed);
579#define IPFW_ADD_SOPT_HANDLER(f, c) do { \
580 if ((f) != 0) \
581 ipfw_add_sopt_handler(c, \
582 sizeof(c) / sizeof(c[0])); \
583 } while(0)
584#define IPFW_DEL_SOPT_HANDLER(l, c) do { \
585 if ((l) != 0) \
586 ipfw_del_sopt_handler(c, \
587 sizeof(c) / sizeof(c[0])); \
588 } while(0)
589
590typedef void (objhash_cb_t)(struct namedobj_instance *ni, struct named_object *,
591 void *arg);
592typedef uint32_t (objhash_hash_f)(struct namedobj_instance *ni, void *key,
593 uint32_t kopt);
594typedef int (objhash_cmp_f)(struct named_object *no, void *key, uint32_t kopt);
595struct namedobj_instance *ipfw_objhash_create(uint32_t items);
596void ipfw_objhash_destroy(struct namedobj_instance *);
597void ipfw_objhash_bitmap_alloc(uint32_t items, void **idx, int *pblocks);
598void ipfw_objhash_bitmap_merge(struct namedobj_instance *ni,
599 void **idx, int *blocks);
600void ipfw_objhash_bitmap_swap(struct namedobj_instance *ni,
601 void **idx, int *blocks);
602void ipfw_objhash_bitmap_free(void *idx, int blocks);
603void ipfw_objhash_set_hashf(struct namedobj_instance *ni, objhash_hash_f *f);
604struct named_object *ipfw_objhash_lookup_name(struct namedobj_instance *ni,
605 uint32_t set, char *name);
606struct named_object *ipfw_objhash_lookup_kidx(struct namedobj_instance *ni,
607 uint16_t idx);
608int ipfw_objhash_same_name(struct namedobj_instance *ni, struct named_object *a,
609 struct named_object *b);
610void ipfw_objhash_add(struct namedobj_instance *ni, struct named_object *no);
611void ipfw_objhash_del(struct namedobj_instance *ni, struct named_object *no);
612uint32_t ipfw_objhash_count(struct namedobj_instance *ni);
613void ipfw_objhash_foreach(struct namedobj_instance *ni, objhash_cb_t *f,
614 void *arg);
615int ipfw_objhash_free_idx(struct namedobj_instance *ni, uint16_t idx);
616int ipfw_objhash_alloc_idx(void *n, uint16_t *pidx);
617void ipfw_objhash_set_funcs(struct namedobj_instance *ni,
618 objhash_hash_f *hash_f, objhash_cmp_f *cmp_f);
619
305/* In ip_fw_table.c */
620/* In ip_fw_table.c */
306struct radix_node;
621struct table_info;
622
623typedef int (table_lookup_t)(struct table_info *ti, void *key, uint32_t keylen,
624 uint32_t *val);
625
307int ipfw_lookup_table(struct ip_fw_chain *ch, uint16_t tbl, in_addr_t addr,
308 uint32_t *val);
626int ipfw_lookup_table(struct ip_fw_chain *ch, uint16_t tbl, in_addr_t addr,
627 uint32_t *val);
309int ipfw_lookup_table_extended(struct ip_fw_chain *ch, uint16_t tbl, void *paddr,
310 uint32_t *val, int type);
311int ipfw_init_tables(struct ip_fw_chain *ch);
312void ipfw_destroy_tables(struct ip_fw_chain *ch);
313int ipfw_flush_table(struct ip_fw_chain *ch, uint16_t tbl);
314int ipfw_add_table_entry(struct ip_fw_chain *ch, uint16_t tbl, void *paddr,
315 uint8_t plen, uint8_t mlen, uint8_t type, uint32_t value);
316int ipfw_del_table_entry(struct ip_fw_chain *ch, uint16_t tbl, void *paddr,
317 uint8_t plen, uint8_t mlen, uint8_t type);
318int ipfw_count_table(struct ip_fw_chain *ch, uint32_t tbl, uint32_t *cnt);
319int ipfw_dump_table_entry(struct radix_node *rn, void *arg);
320int ipfw_dump_table(struct ip_fw_chain *ch, ipfw_table *tbl);
321int ipfw_count_xtable(struct ip_fw_chain *ch, uint32_t tbl, uint32_t *cnt);
322int ipfw_dump_xtable(struct ip_fw_chain *ch, ipfw_xtable *tbl);
628int ipfw_lookup_table_extended(struct ip_fw_chain *ch, uint16_t tbl, uint16_t plen,
629 void *paddr, uint32_t *val);
630int ipfw_init_tables(struct ip_fw_chain *ch, int first);
323int ipfw_resize_tables(struct ip_fw_chain *ch, unsigned int ntables);
631int ipfw_resize_tables(struct ip_fw_chain *ch, unsigned int ntables);
632int ipfw_switch_tables_namespace(struct ip_fw_chain *ch, unsigned int nsets);
633void ipfw_destroy_tables(struct ip_fw_chain *ch, int last);
324
325/* In ip_fw_nat.c -- XXX to be moved to ip_var.h */
326
327extern struct cfg_nat *(*lookup_nat_ptr)(struct nat_list *, int);
328
329typedef int ipfw_nat_t(struct ip_fw_args *, struct cfg_nat *, struct mbuf *);
330typedef int ipfw_nat_cfg_t(struct sockopt *);
331

--- 12 unchanged lines hidden --- 		634
635/* In ip_fw_nat.c -- XXX to be moved to ip_var.h */
636
637extern struct cfg_nat *(*lookup_nat_ptr)(struct nat_list *, int);
638
639typedef int ipfw_nat_t(struct ip_fw_args *, struct cfg_nat *, struct mbuf *);
640typedef int ipfw_nat_cfg_t(struct sockopt *);
641

--- 12 unchanged lines hidden ---