1 /*- 2 * Copyright (c) 2009-2025 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This material is based upon work partially supported by The 6 * NetBSD Foundation under a contract with Mindaugas Rasiukevicius. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 /* 31 * Private NPF structures and interfaces. 32 * For internal use within NPF core only. 33 */ 34 35 #ifndef _NPF_IMPL_H_ 36 #define _NPF_IMPL_H_ 37 38 #if !defined(_KERNEL) && !defined(_NPF_STANDALONE) 39 #error "Kernel-level header only" 40 #endif 41 42 #ifdef _KERNEL_OPT 43 /* For INET/INET6 definitions. */ 44 #include "opt_inet.h" 45 #include "opt_inet6.h" 46 #endif 47 48 #ifdef _KERNEL 49 #include <sys/types.h> 50 #include <sys/queue.h> 51 52 #include <net/bpf.h> 53 #include <net/bpfjit.h> 54 #include <net/if.h> 55 #endif 56 #include <dnv.h> 57 #include <nv.h> 58 59 #include "npf.h" 60 #include "npfkern.h" 61 62 #ifdef _NPF_DEBUG 63 #define NPF_PRINTF(x) printf x 64 #else 65 #define NPF_PRINTF(x) 66 #endif 67 68 /* 69 * STRUCTURE DECLARATIONS. 70 */ 71 72 struct npf_ruleset; 73 struct npf_rule; 74 struct npf_rprocset; 75 struct npf_portmap; 76 struct npf_nat; 77 struct npf_conn; 78 79 typedef struct npf_ruleset npf_ruleset_t; 80 typedef struct npf_rule npf_rule_t; 81 typedef struct npf_portmap npf_portmap_t; 82 typedef struct npf_nat npf_nat_t; 83 typedef struct npf_rprocset npf_rprocset_t; 84 typedef struct npf_alg npf_alg_t; 85 typedef struct npf_natpolicy npf_natpolicy_t; 86 typedef struct npf_conn npf_conn_t; 87 88 struct npf_conndb; 89 struct npf_table; 90 struct npf_tableset; 91 struct npf_algset; 92 struct npf_ifmap; 93 94 typedef struct npf_conndb npf_conndb_t; 95 typedef struct npf_table npf_table_t; 96 typedef struct npf_tableset npf_tableset_t; 97 typedef struct npf_algset npf_algset_t; 98 99 typedef uint32_t (*get_rid_t)(kauth_cred_t); 100 101 #ifdef __NetBSD__ 102 typedef void ebr_t; 103 #endif 104 105 /* 106 * DEFINITIONS. 107 */ 108 109 typedef struct { 110 npf_ruleset_t * ruleset; 111 npf_ruleset_t * nat_ruleset; 112 npf_rprocset_t * rule_procs; 113 npf_tableset_t * tableset; 114 bool default_pass; 115 } npf_config_t; 116 117 typedef void (*npf_workfunc_t)(npf_t *); 118 119 typedef struct { 120 uint64_t mi_rid; 121 unsigned mi_retfl; 122 unsigned mi_di; 123 } npf_match_info_t; 124 125 /* 126 * Some artificial limits. 127 * Note: very unlikely to have many ALGs. 128 */ 129 #define NPF_MAX_RULES (1024 * 1024) 130 #define NPF_MAX_TABLES 128 131 #define NPF_MAX_RPROCS 128 132 #define NPF_MAX_IFMAP 64 133 #define NPF_MAX_ALGS 4 134 #define NPF_MAX_WORKS 4 135 136 /* 137 * CONNECTION STATE STRUCTURES 138 */ 139 140 typedef enum { 141 NPF_FLOW_FORW = 0, 142 NPF_FLOW_BACK = 1, 143 } npf_flow_t; 144 145 typedef struct { 146 uint32_t nst_end; 147 uint32_t nst_maxend; 148 uint32_t nst_maxwin; 149 int nst_wscale; 150 } npf_tcpstate_t; 151 152 typedef struct { 153 unsigned nst_state; 154 npf_tcpstate_t nst_tcpst[2]; 155 } npf_state_t; 156 157 /* 158 * ALG FUNCTIONS. 159 */ 160 161 typedef struct { 162 bool (*match)(npf_cache_t *, npf_nat_t *, int); 163 bool (*translate)(npf_cache_t *, npf_nat_t *, npf_flow_t); 164 npf_conn_t * (*inspect)(npf_cache_t *, int); 165 void (*destroy)(npf_t *, npf_nat_t *, npf_conn_t *); 166 } npfa_funcs_t; 167 168 /* 169 * NBUF STRUCTURE. 170 */ 171 172 struct nbuf { 173 struct mbuf * nb_mbuf0; 174 struct mbuf * nb_mbuf; 175 void * nb_nptr; 176 const ifnet_t * nb_ifp; 177 unsigned nb_ifid; 178 int nb_flags; 179 const npf_mbufops_t *nb_mops; 180 }; 181 182 /* 183 * PARAMS. 184 */ 185 186 typedef struct npf_paraminfo npf_paraminfo_t; 187 188 typedef struct { 189 const char * name; 190 int * valp; 191 int default_val; 192 /* 193 * Minimum and maximum allowed values (inclusive). 194 */ 195 int min; 196 int max; 197 } npf_param_t; 198 199 typedef enum { 200 NPF_PARAMS_CONN = 0, 201 NPF_PARAMS_CONNDB, 202 NPF_PARAMS_GENERIC_STATE, 203 NPF_PARAMS_TCP_STATE, 204 NPF_PARAMS_COUNT 205 } npf_paramgroup_t; 206 207 /* 208 * NPF INSTANCE (CONTEXT) STRUCTURE AND AUXILIARY OPERATIONS. 209 */ 210 211 struct npf { 212 /* Active NPF configuration. */ 213 kmutex_t config_lock; 214 ebr_t * ebr; 215 npf_config_t * config; 216 217 /* 218 * BPF byte-code context, mbuf operations an arbitrary user argument. 219 */ 220 bpf_ctx_t * bpfctx; 221 const npf_mbufops_t * mbufops; 222 void * arg; 223 224 /* Parameters. */ 225 npf_paraminfo_t * paraminfo; 226 void * params[NPF_PARAMS_COUNT]; 227 int ip4_reassembly; 228 int ip6_reassembly; 229 230 /* 231 * Connection tracking state: disabled (off) or enabled (on). 232 * Connection tracking database, connection cache and the lock. 233 * There are two caches (pools): for IPv4 and IPv6. 234 */ 235 volatile int conn_tracking; 236 kmutex_t conn_lock; 237 npf_conndb_t * conn_db; 238 pool_cache_t conn_cache[2]; 239 240 /* NAT and ALGs. */ 241 npf_portmap_t * portmap; 242 npf_algset_t * algset; 243 244 /* Interface mapping. */ 245 const npf_ifops_t * ifops; 246 struct npf_ifmap * ifmap; 247 unsigned ifmap_cnt; 248 unsigned ifmap_off; 249 kmutex_t ifmap_lock; 250 251 /* List of extensions and its lock. */ 252 LIST_HEAD(, npf_ext) ext_list; 253 kmutex_t ext_lock; 254 255 /* Associated worker information. */ 256 unsigned worker_flags; 257 LIST_ENTRY(npf) worker_entry; 258 unsigned worker_wait_time; 259 npf_workfunc_t worker_funcs[NPF_MAX_WORKS]; 260 261 /* Statistics. */ 262 percpu_t * stats_percpu; 263 }; 264 265 /* 266 * NPF extensions and rule procedure interface. 267 */ 268 269 struct npf_rproc; 270 typedef struct npf_rproc npf_rproc_t; 271 272 typedef struct { 273 u_int version; 274 void * ctx; 275 int (*ctor)(npf_rproc_t *, const nvlist_t *); 276 void (*dtor)(npf_rproc_t *, void *); 277 bool (*proc)(npf_cache_t *, void *, const npf_match_info_t *, int *); 278 } npf_ext_ops_t; 279 280 void * npf_ext_register(npf_t *, const char *, const npf_ext_ops_t *); 281 int npf_ext_unregister(npf_t *, void *); 282 void npf_rproc_assign(npf_rproc_t *, void *); 283 284 /* 285 * INTERFACES. 286 */ 287 288 /* NPF config, statistics, etc. */ 289 void npf_config_init(npf_t *); 290 void npf_config_fini(npf_t *); 291 292 npf_config_t * npf_config_enter(npf_t *); 293 void npf_config_exit(npf_t *); 294 void npf_config_sync(npf_t *); 295 bool npf_config_locked_p(npf_t *); 296 int npf_config_read_enter(npf_t *); 297 void npf_config_read_exit(npf_t *, int); 298 299 npf_config_t * npf_config_create(void); 300 void npf_config_destroy(npf_config_t *); 301 void npf_config_load(npf_t *, npf_config_t *, npf_conndb_t *, bool); 302 npf_ruleset_t * npf_config_ruleset(npf_t *npf); 303 npf_ruleset_t * npf_config_natset(npf_t *npf); 304 npf_tableset_t *npf_config_tableset(npf_t *npf); 305 bool npf_default_pass(npf_t *); 306 bool npf_active_p(void); 307 308 int npf_worker_sysinit(unsigned); 309 void npf_worker_sysfini(void); 310 int npf_worker_addfunc(npf_t *, npf_workfunc_t); 311 void npf_worker_enlist(npf_t *); 312 void npf_worker_discharge(npf_t *); 313 void npf_worker_signal(npf_t *); 314 315 int npfctl_run_op(npf_t *, unsigned, const nvlist_t *, nvlist_t *); 316 int npfctl_table(npf_t *, void *); 317 318 void npf_stats_inc(npf_t *, npf_stats_t); 319 void npf_stats_dec(npf_t *, npf_stats_t); 320 321 void npf_param_init(npf_t *); 322 void npf_param_fini(npf_t *); 323 void npf_param_register(npf_t *, npf_param_t *, unsigned); 324 void * npf_param_allocgroup(npf_t *, npf_paramgroup_t, size_t); 325 void npf_param_freegroup(npf_t *, npf_paramgroup_t, size_t); 326 int npf_param_check(npf_t *, const char *, int); 327 int npf_params_export(const npf_t *, nvlist_t *); 328 329 void npf_ifmap_init(npf_t *, const npf_ifops_t *); 330 void npf_ifmap_fini(npf_t *); 331 u_int npf_ifmap_register(npf_t *, const char *); 332 void npf_ifmap_flush(npf_t *); 333 u_int npf_ifmap_getid(npf_t *, const ifnet_t *); 334 void npf_ifmap_copylogname(npf_t *, unsigned, char *, size_t); 335 void npf_ifmap_copyname(npf_t *, unsigned, char *, size_t); 336 337 void npf_ifaddr_sync(npf_t *, ifnet_t *); 338 void npf_ifaddr_flush(npf_t *, ifnet_t *); 339 void npf_ifaddr_syncall(npf_t *); 340 341 /* Protocol helpers. */ 342 int npf_cache_all(npf_cache_t *); 343 void npf_recache(npf_cache_t *); 344 int npf_cache_ether(npf_cache_t *); 345 346 bool npf_rwrip(const npf_cache_t *, u_int, const npf_addr_t *); 347 bool npf_rwrport(const npf_cache_t *, u_int, const in_port_t); 348 bool npf_rwrcksum(const npf_cache_t *, u_int, 349 const npf_addr_t *, const in_port_t); 350 int npf_napt_rwr(const npf_cache_t *, u_int, const npf_addr_t *, 351 const in_addr_t); 352 int npf_npt66_rwr(const npf_cache_t *, u_int, const npf_addr_t *, 353 npf_netmask_t, uint16_t); 354 355 uint16_t npf_fixup16_cksum(uint16_t, uint16_t, uint16_t); 356 uint16_t npf_fixup32_cksum(uint16_t, uint32_t, uint32_t); 357 uint16_t npf_addr_cksum(uint16_t, int, const npf_addr_t *, 358 const npf_addr_t *); 359 uint32_t npf_addr_mix(const int, const npf_addr_t *, const npf_addr_t *); 360 int npf_addr_cmp(const npf_addr_t *, const npf_netmask_t, 361 const npf_addr_t *, const npf_netmask_t, const int); 362 void npf_addr_mask(const npf_addr_t *, const npf_netmask_t, 363 const int, npf_addr_t *); 364 void npf_addr_bitor(const npf_addr_t *, const npf_netmask_t, 365 const int, npf_addr_t *); 366 int npf_netmask_check(const int, npf_netmask_t); 367 368 int npf_tcpsaw(const npf_cache_t *, tcp_seq *, tcp_seq *, 369 uint32_t *); 370 bool npf_fetch_tcpopts(npf_cache_t *, uint16_t *, int *); 371 bool npf_set_mss(npf_cache_t *, uint16_t, uint16_t *, uint16_t *, 372 bool *); 373 bool npf_return_block(npf_cache_t *, const int); 374 375 /* BPF interface. */ 376 void npf_bpf_sysinit(void); 377 void npf_bpf_sysfini(void); 378 void npf_bpf_prepare(npf_cache_t *, bpf_args_t *, uint32_t *); 379 int npf_bpf_filter(bpf_args_t *, const void *, bpfjit_func_t); 380 void * npf_bpf_compile(void *, size_t); 381 bool npf_bpf_validate(const void *, size_t); 382 383 /* Tableset interface. */ 384 void npf_tableset_sysinit(void); 385 void npf_tableset_sysfini(void); 386 387 npf_tableset_t *npf_tableset_create(u_int); 388 void npf_tableset_destroy(npf_tableset_t *); 389 int npf_tableset_insert(npf_tableset_t *, npf_table_t *); 390 npf_table_t * npf_tableset_getbyname(npf_tableset_t *, const char *); 391 npf_table_t * npf_tableset_getbyid(npf_tableset_t *, u_int); 392 npf_table_t * npf_tableset_swap(npf_tableset_t *, npf_table_t *); 393 void npf_tableset_reload(npf_t *, npf_tableset_t *, npf_tableset_t *); 394 int npf_tableset_export(npf_t *, const npf_tableset_t *, nvlist_t *); 395 396 npf_table_t * npf_table_create(const char *, u_int, int, const void *, size_t); 397 void npf_table_destroy(npf_table_t *); 398 399 u_int npf_table_getid(npf_table_t *); 400 int npf_table_check(npf_tableset_t *, const char *, uint64_t, uint64_t, bool); 401 int npf_table_insert(npf_table_t *, const int, 402 const npf_addr_t *, const npf_netmask_t); 403 int npf_table_remove(npf_table_t *, const int, 404 const npf_addr_t *, const npf_netmask_t); 405 int npf_table_lookup(npf_table_t *, const int, const npf_addr_t *); 406 npf_addr_t * npf_table_getsome(npf_table_t *, const int, unsigned); 407 int npf_table_list(npf_table_t *, void *, size_t); 408 int npf_table_flush(npf_table_t *); 409 void npf_table_gc(npf_t *, npf_table_t *); 410 411 /* Ruleset interface. */ 412 npf_ruleset_t * npf_ruleset_create(size_t); 413 void npf_ruleset_destroy(npf_ruleset_t *); 414 void npf_ruleset_insert(npf_ruleset_t *, npf_rule_t *); 415 void npf_ruleset_reload(npf_t *, npf_ruleset_t *, 416 npf_ruleset_t *, bool); 417 npf_natpolicy_t *npf_ruleset_findnat(npf_ruleset_t *, uint64_t); 418 void npf_ruleset_freealg(npf_ruleset_t *, npf_alg_t *); 419 int npf_ruleset_export(npf_t *, const npf_ruleset_t *, 420 const char *, nvlist_t *); 421 422 npf_rule_t * npf_ruleset_lookup(npf_ruleset_t *, const char *); 423 int npf_ruleset_add(npf_ruleset_t *, const char *, npf_rule_t *); 424 int npf_ruleset_remove(npf_ruleset_t *, const char *, uint64_t); 425 int npf_ruleset_remkey(npf_ruleset_t *, const char *, 426 const void *, size_t); 427 int npf_ruleset_list(npf_t *, npf_ruleset_t *, const char *, nvlist_t *); 428 int npf_ruleset_flush(npf_ruleset_t *, const char *); 429 void npf_ruleset_gc(npf_ruleset_t *); 430 431 npf_rule_t * npf_ruleset_inspect(npf_cache_t *, const npf_ruleset_t *, 432 const int, const int); 433 int npf_rule_conclude(const npf_rule_t *, npf_match_info_t *); 434 int npf_rule_reverse(npf_cache_t *, npf_match_info_t *, int); 435 436 /* Rule interface. */ 437 npf_rule_t * npf_rule_alloc(npf_t *, const nvlist_t *); 438 void npf_rule_setcode(npf_rule_t *, int, void *, size_t); 439 void npf_rule_setrproc(npf_rule_t *, npf_rproc_t *); 440 void npf_rule_free(npf_rule_t *); 441 uint64_t npf_rule_getid(const npf_rule_t *); 442 npf_natpolicy_t *npf_rule_getnat(const npf_rule_t *); 443 void npf_rule_setnat(npf_rule_t *, npf_natpolicy_t *); 444 npf_rproc_t * npf_rule_getrproc(const npf_rule_t *); 445 446 int npf_socket_lookup_rid(npf_cache_t *, get_rid_t, uint32_t *, int); 447 void npf_rule_setrid(const nvlist_t *, npf_rule_t *, const char *); 448 int npf_rule_match_rid(npf_rule_t *, npf_cache_t *, int); 449 450 void npf_ext_init(npf_t *); 451 void npf_ext_fini(npf_t *); 452 int npf_ext_construct(npf_t *, const char *, 453 npf_rproc_t *, const nvlist_t *); 454 455 npf_rprocset_t *npf_rprocset_create(void); 456 void npf_rprocset_destroy(npf_rprocset_t *); 457 npf_rproc_t * npf_rprocset_lookup(npf_rprocset_t *, const char *); 458 void npf_rprocset_insert(npf_rprocset_t *, npf_rproc_t *); 459 int npf_rprocset_export(const npf_rprocset_t *, nvlist_t *); 460 461 npf_rproc_t * npf_rproc_create(const nvlist_t *); 462 void npf_rproc_acquire(npf_rproc_t *); 463 void npf_rproc_release(npf_rproc_t *); 464 const char * npf_rproc_getname(const npf_rproc_t *); 465 bool npf_rproc_run(npf_cache_t *, npf_rproc_t *, 466 const npf_match_info_t *, int *); 467 468 /* State handling. */ 469 void npf_state_sysinit(npf_t *); 470 void npf_state_sysfini(npf_t *); 471 472 bool npf_state_init(npf_cache_t *, npf_state_t *); 473 bool npf_state_inspect(npf_cache_t *, npf_state_t *, npf_flow_t); 474 int npf_state_etime(npf_t *, const npf_state_t *, const int); 475 void npf_state_destroy(npf_state_t *); 476 void npf_state_tcp_sysinit(npf_t *); 477 void npf_state_tcp_sysfini(npf_t *); 478 bool npf_state_tcp(npf_cache_t *, npf_state_t *, npf_flow_t); 479 int npf_state_tcp_timeout(npf_t *, const npf_state_t *); 480 481 /* uid/gid process matching */ 482 int npf_match_rid(rid_t *, uint32_t); 483 484 /* Portmap. */ 485 void npf_portmap_sysinit(void); 486 void npf_portmap_sysfini(void); 487 488 void npf_portmap_init(npf_t *); 489 void npf_portmap_fini(npf_t *); 490 491 npf_portmap_t * npf_portmap_create(int, int); 492 void npf_portmap_destroy(npf_portmap_t *); 493 494 in_port_t npf_portmap_get(npf_portmap_t *, int, const npf_addr_t *); 495 bool npf_portmap_take(npf_portmap_t *, int, const npf_addr_t *, in_port_t); 496 void npf_portmap_put(npf_portmap_t *, int, const npf_addr_t *, in_port_t); 497 void npf_portmap_flush(npf_portmap_t *); 498 499 /* NAT. */ 500 void npf_nat_sysinit(void); 501 void npf_nat_sysfini(void); 502 npf_natpolicy_t *npf_natpolicy_create(npf_t *, const nvlist_t *, npf_ruleset_t *); 503 int npf_natpolicy_export(const npf_natpolicy_t *, nvlist_t *); 504 void npf_natpolicy_destroy(npf_natpolicy_t *); 505 bool npf_natpolicy_cmp(npf_natpolicy_t *, npf_natpolicy_t *); 506 void npf_nat_setid(npf_natpolicy_t *, uint64_t); 507 uint64_t npf_nat_getid(const npf_natpolicy_t *); 508 void npf_nat_freealg(npf_natpolicy_t *, npf_alg_t *); 509 510 int npf_do_nat(npf_cache_t *, npf_conn_t *, const unsigned); 511 npf_nat_t * npf_nat_share_policy(npf_cache_t *, npf_conn_t *, npf_nat_t *); 512 void npf_nat_destroy(npf_conn_t *, npf_nat_t *); 513 void npf_nat_getorig(npf_nat_t *, npf_addr_t **, in_port_t *); 514 void npf_nat_gettrans(npf_nat_t *, npf_addr_t **, in_port_t *); 515 void npf_nat_setalg(npf_nat_t *, npf_alg_t *, uintptr_t); 516 npf_alg_t * npf_nat_getalg(const npf_nat_t *); 517 uintptr_t npf_nat_getalgarg(const npf_nat_t *); 518 519 void npf_nat_export(npf_t *, const npf_nat_t *, nvlist_t *); 520 npf_nat_t * npf_nat_import(npf_t *, const nvlist_t *, npf_ruleset_t *, 521 npf_conn_t *); 522 523 /* ALG interface. */ 524 void npf_alg_sysinit(void); 525 void npf_alg_sysfini(void); 526 void npf_alg_init(npf_t *); 527 void npf_alg_fini(npf_t *); 528 npf_alg_t * npf_alg_register(npf_t *, const char *, const npfa_funcs_t *); 529 int npf_alg_unregister(npf_t *, npf_alg_t *); 530 npf_alg_t * npf_alg_construct(npf_t *, const char *); 531 bool npf_alg_match(npf_cache_t *, npf_nat_t *, int); 532 void npf_alg_exec(npf_cache_t *, npf_nat_t *, const npf_flow_t); 533 npf_conn_t * npf_alg_conn(npf_cache_t *, int); 534 int npf_alg_export(npf_t *, nvlist_t *); 535 void npf_alg_destroy(npf_t *, npf_alg_t *, npf_nat_t *, npf_conn_t *); 536 537 /* Wrappers for the reclamation mechanism. */ 538 ebr_t * npf_ebr_create(void); 539 void npf_ebr_destroy(ebr_t *); 540 void npf_ebr_register(ebr_t *); 541 void npf_ebr_unregister(ebr_t *); 542 int npf_ebr_enter(ebr_t *); 543 void npf_ebr_exit(ebr_t *, int); 544 void npf_ebr_full_sync(ebr_t *); 545 bool npf_ebr_incrit_p(ebr_t *); 546 547 /* Debugging routines. */ 548 const char * npf_addr_dump(const npf_addr_t *, int); 549 void npf_state_dump(const npf_state_t *); 550 void npf_nat_dump(const npf_nat_t *); 551 void npf_ruleset_dump(npf_t *, const char *); 552 void npf_state_setsampler(void (*)(npf_state_t *, bool)); 553 554 /* In-kernel routines. */ 555 void npf_setkernctx(npf_t *); 556 npf_t * npf_getkernctx(void); 557 558 #endif /* _NPF_IMPL_H_ */ 559
Indexes created Sun Sep 21 18:09:52 GMT 2025