44#include <vm/uma.h> 45#else 46#include <netinet/ip_ipsp.h> 47#endif 48 49#ifdef __FreeBSD__ 50#include <netinet/in.h> 51/* 52 * XXX 53 * If we include <netipsec/keydb.h>, we need _KERNEL definition. 54 * This makes pfctl compilation difficult. 55 */ 56union sockaddr_union { 57 struct sockaddr sa; 58 struct sockaddr_in sin; 59 struct sockaddr_in6 sin6; 60}; 61#endif 62 63#include <netinet/tcp_fsm.h> 64 65struct ip; 66 67#define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 68#define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 69 70enum { PF_INOUT, PF_IN, PF_OUT }; 71enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID }; 72enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NAT, PF_NONAT, 73 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 74enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 75 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 76enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 77 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 78enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 79enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 80 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 81 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 82/* 83 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 84 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 85 */ 86enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 87 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 88 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 89 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 90 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 91 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 92 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 93 PFTM_MAX, PFTM_PURGE, PFTM_UNTIL_PACKET }; 94enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 95enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, PF_LIMIT_MAX }; 96#define PF_POOL_IDMASK 0x0f 97enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 98 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 99enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 100 PF_ADDR_TABLE }; 101#define PF_POOL_TYPEMASK 0x0f 102#define PF_POOL_STICKYADDR 0x20 103#define PF_WSCALE_FLAG 0x80 104#define PF_WSCALE_MASK 0x0f 105 106struct pf_addr { 107 union { 108 struct in_addr v4; 109 struct in6_addr v6; 110 u_int8_t addr8[16]; 111 u_int16_t addr16[8]; 112 u_int32_t addr32[4]; 113 } pfa; /* 128-bit address */ 114#define v4 pfa.v4 115#define v6 pfa.v6 116#define addr8 pfa.addr8 117#define addr16 pfa.addr16 118#define addr32 pfa.addr32 119}; 120 121#define PF_TABLE_NAME_SIZE 32 122 123#define PFI_AFLAG_NETWORK 0x01 124#define PFI_AFLAG_BROADCAST 0x02 125#define PFI_AFLAG_PEER 0x04 126#define PFI_AFLAG_MODEMASK 0x07 127#define PFI_AFLAG_NOALIAS 0x08 128 129struct pf_addr_wrap { 130 union { 131 struct { 132 struct pf_addr addr; 133 struct pf_addr mask; 134 } a; 135 char ifname[IFNAMSIZ]; 136 char tblname[PF_TABLE_NAME_SIZE]; 137 } v; 138 union { 139 struct pfi_dynaddr *dyn; 140 struct pfr_ktable *tbl; 141 int dyncnt; 142 int tblcnt; 143 } p; 144 u_int8_t type; /* PF_ADDR_* */ 145 u_int8_t iflags; /* PFI_AFLAG_* */ 146}; 147 148#ifdef _KERNEL 149 150struct pfi_dynaddr { 151 struct pf_addr pfid_addr4; 152 struct pf_addr pfid_mask4; 153 struct pf_addr pfid_addr6; 154 struct pf_addr pfid_mask6; 155 struct pfr_ktable *pfid_kt; 156 struct pfi_kif *pfid_kif; 157 void *pfid_hook_cookie; 158 int pfid_net; /* optional mask, or 128 */ 159 int pfid_acnt4; /* address count, IPv4 */ 160 int pfid_acnt6; /* address count, IPv6 */ 161 sa_family_t pfid_af; /* rule address family */ 162 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 163}; 164 165/* 166 * Address manipulation macros 167 */ 168 169#ifdef __FreeBSD__ 170#define splsoftnet() splnet() 171 172#define HTONL(x) (x) = htonl((__uint32_t)(x)) 173#define HTONS(x) (x) = htons((__uint16_t)(x)) 174#define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 175#define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 176 177#define PF_NAME "pf" 178 179#define PR_NOWAIT M_NOWAIT 180#define pool_get(p, f) uma_zalloc(*(p), (f)) 181#define pool_put(p, o) uma_zfree(*(p), (o)) 182 183#define UMA_CREATE(var, type, desc) \ 184 var = uma_zcreate(desc, sizeof(type), \ 185 NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); \ 186 if (var == NULL) break 187#define UMA_DESTROY(var) \ 188 if(var) uma_zdestroy(var) 189 190extern struct mtx pf_task_mtx; 191 192#define PF_ASSERT(h) mtx_assert(&pf_task_mtx, (h)) 193 194#define PF_LOCK() do { \ 195 PF_ASSERT(MA_NOTOWNED); \ 196 mtx_lock(&pf_task_mtx); \ 197} while(0) 198#define PF_UNLOCK() do { \ 199 PF_ASSERT(MA_OWNED); \ 200 mtx_unlock(&pf_task_mtx); \ 201} while(0) 202 203#define PF_COPYIN(uaddr, kaddr, len, r) do { \ 204 PF_UNLOCK(); \ 205 r = copyin((uaddr), (kaddr), (len)); \ 206 PF_LOCK(); \ 207} while(0) 208 209#define PF_COPYOUT(kaddr, uaddr, len, r) do { \ 210 PF_UNLOCK(); \ 211 r = copyout((kaddr), (uaddr), (len)); \ 212 PF_LOCK(); \ 213} while(0) 214 215extern void init_pf_mutex(void); 216extern void destroy_pf_mutex(void); 217 218#define PF_MODVER 1 219#define PFLOG_MODVER 1 220#define PFSYNC_MODVER 1 221 222#define PFLOG_MINVER 1 223#define PFLOG_PREFVER PFLOG_MODVER 224#define PFLOG_MAXVER 1 225#define PFSYNC_MINVER 1 226#define PFSYNC_PREFVER PFSYNC_MODVER 227#define PFSYNC_MAXVER 1 228 229/* prototyped for pf_subr.c */ 230struct hook_desc { 231 TAILQ_ENTRY(hook_desc) hd_list; 232 void (*hd_fn)(void *); 233 void *hd_arg; 234}; 235TAILQ_HEAD(hook_desc_head, hook_desc); 236 237void *hook_establish(struct hook_desc_head *, int, void (*)(void *), void *); 238void hook_disestablish(struct hook_desc_head *, void *); 239void dohooks(struct hook_desc_head *, int); 240 241#define HOOK_REMOVE 0x01 242#define HOOK_FREE 0x02 243#endif /* __FreeBSD__ */ 244 245#ifdef INET 246#ifndef INET6 247#define PF_INET_ONLY 248#endif /* ! INET6 */ 249#endif /* INET */ 250 251#ifdef INET6 252#ifndef INET 253#define PF_INET6_ONLY 254#endif /* ! INET */ 255#endif /* INET6 */ 256 257#ifdef INET 258#ifdef INET6 259#define PF_INET_INET6 260#endif /* INET6 */ 261#endif /* INET */ 262 263#else 264 265#define PF_INET_INET6 266 267#endif /* _KERNEL */ 268 269/* Both IPv4 and IPv6 */ 270#ifdef PF_INET_INET6 271 272#define PF_AEQ(a, b, c) \ 273 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 274 ((a)->addr32[3] == (b)->addr32[3] && \ 275 (a)->addr32[2] == (b)->addr32[2] && \ 276 (a)->addr32[1] == (b)->addr32[1] && \ 277 (a)->addr32[0] == (b)->addr32[0])) \ 278 279#define PF_ANEQ(a, b, c) \ 280 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 281 ((a)->addr32[3] != (b)->addr32[3] || \ 282 (a)->addr32[2] != (b)->addr32[2] || \ 283 (a)->addr32[1] != (b)->addr32[1] || \ 284 (a)->addr32[0] != (b)->addr32[0])) \ 285 286#define PF_AZERO(a, c) \ 287 ((c == AF_INET && !(a)->addr32[0]) || \ 288 (!(a)->addr32[0] && !(a)->addr32[1] && \ 289 !(a)->addr32[2] && !(a)->addr32[3] )) \ 290 291#define PF_MATCHA(n, a, m, b, f) \ 292 pf_match_addr(n, a, m, b, f) 293 294#define PF_ACPY(a, b, f) \ 295 pf_addrcpy(a, b, f) 296 297#define PF_AINC(a, f) \ 298 pf_addr_inc(a, f) 299 300#define PF_POOLMASK(a, b, c, d, f) \ 301 pf_poolmask(a, b, c, d, f) 302 303#else 304 305/* Just IPv6 */ 306 307#ifdef PF_INET6_ONLY 308 309#define PF_AEQ(a, b, c) \ 310 ((a)->addr32[3] == (b)->addr32[3] && \ 311 (a)->addr32[2] == (b)->addr32[2] && \ 312 (a)->addr32[1] == (b)->addr32[1] && \ 313 (a)->addr32[0] == (b)->addr32[0]) \ 314 315#define PF_ANEQ(a, b, c) \ 316 ((a)->addr32[3] != (b)->addr32[3] || \ 317 (a)->addr32[2] != (b)->addr32[2] || \ 318 (a)->addr32[1] != (b)->addr32[1] || \ 319 (a)->addr32[0] != (b)->addr32[0]) \ 320 321#define PF_AZERO(a, c) \ 322 (!(a)->addr32[0] && \ 323 !(a)->addr32[1] && \ 324 !(a)->addr32[2] && \ 325 !(a)->addr32[3] ) \ 326 327#define PF_MATCHA(n, a, m, b, f) \ 328 pf_match_addr(n, a, m, b, f) 329 330#define PF_ACPY(a, b, f) \ 331 pf_addrcpy(a, b, f) 332 333#define PF_AINC(a, f) \ 334 pf_addr_inc(a, f) 335 336#define PF_POOLMASK(a, b, c, d, f) \ 337 pf_poolmask(a, b, c, d, f) 338 339#else 340 341/* Just IPv4 */ 342#ifdef PF_INET_ONLY 343 344#define PF_AEQ(a, b, c) \ 345 ((a)->addr32[0] == (b)->addr32[0]) 346 347#define PF_ANEQ(a, b, c) \ 348 ((a)->addr32[0] != (b)->addr32[0]) 349 350#define PF_AZERO(a, c) \ 351 (!(a)->addr32[0]) 352 353#define PF_MATCHA(n, a, m, b, f) \ 354 pf_match_addr(n, a, m, b, f) 355 356#define PF_ACPY(a, b, f) \ 357 (a)->v4.s_addr = (b)->v4.s_addr 358 359#define PF_AINC(a, f) \ 360 do { \ 361 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 362 } while (0) 363 364#define PF_POOLMASK(a, b, c, d, f) \ 365 do { \ 366 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 367 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 368 } while (0) 369 370#endif /* PF_INET_ONLY */ 371#endif /* PF_INET6_ONLY */ 372#endif /* PF_INET_INET6 */ 373 374#define PF_MISMATCHAW(aw, x, af, not) \ 375 ( \ 376 (((aw)->type == PF_ADDR_NOROUTE && \ 377 pf_routable((x), (af))) || \ 378 ((aw)->type == PF_ADDR_TABLE && \ 379 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 380 ((aw)->type == PF_ADDR_DYNIFTL && \ 381 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 382 ((aw)->type == PF_ADDR_ADDRMASK && \ 383 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 384 !PF_MATCHA(0, &(aw)->v.a.addr, \ 385 &(aw)->v.a.mask, (x), (af)))) != \ 386 (not) \ 387 ) 388 389struct pf_rule_uid { 390 uid_t uid[2]; 391 u_int8_t op; 392}; 393 394struct pf_rule_gid { 395 uid_t gid[2]; 396 u_int8_t op; 397}; 398 399struct pf_rule_addr { 400 struct pf_addr_wrap addr; 401 u_int16_t port[2]; 402 u_int8_t not; 403 u_int8_t port_op; 404}; 405 406struct pf_pooladdr { 407 struct pf_addr_wrap addr; 408 TAILQ_ENTRY(pf_pooladdr) entries; 409 char ifname[IFNAMSIZ]; 410 struct pfi_kif *kif; 411}; 412 413TAILQ_HEAD(pf_palist, pf_pooladdr); 414 415struct pf_poolhashkey { 416 union { 417 u_int8_t key8[16]; 418 u_int16_t key16[8]; 419 u_int32_t key32[4]; 420 } pfk; /* 128-bit hash key */ 421#define key8 pfk.key8 422#define key16 pfk.key16 423#define key32 pfk.key32 424}; 425 426struct pf_pool { 427 struct pf_palist list; 428 struct pf_pooladdr *cur; 429 struct pf_poolhashkey key; 430 struct pf_addr counter; 431 int tblidx; 432 u_int16_t proxy_port[2]; 433 u_int8_t port_op; 434 u_int8_t opts; 435}; 436 437 438/* A packed Operating System description for fingerprinting */ 439typedef u_int32_t pf_osfp_t; 440#define PF_OSFP_ANY ((pf_osfp_t)0) 441#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 442#define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 443 444struct pf_osfp_entry { 445 SLIST_ENTRY(pf_osfp_entry) fp_entry; 446 pf_osfp_t fp_os; 447 int fp_enflags; 448#define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 449#define PF_OSFP_GENERIC 0x002 /* generic signature */ 450#define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 451#define PF_OSFP_LEN 32 452 char fp_class_nm[PF_OSFP_LEN]; 453 char fp_version_nm[PF_OSFP_LEN]; 454 char fp_subtype_nm[PF_OSFP_LEN]; 455}; 456#define PF_OSFP_ENTRY_EQ(a, b) \ 457 ((a)->fp_os == (b)->fp_os && \ 458 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 459 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 460 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 461 462/* handle pf_osfp_t packing */ 463#define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 464#define _FP_UNUSED_BITS 1 465#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 466#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 467#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 468#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 469 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 470 ((1 << _FP_CLASS_BITS) - 1); \ 471 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 472 ((1 << _FP_VERSION_BITS) - 1);\ 473 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 474} while(0) 475#define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 476 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 477 + _FP_SUBTYPE_BITS); \ 478 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 479 _FP_SUBTYPE_BITS; \ 480 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 481} while(0) 482 483/* the fingerprint of an OSes TCP SYN packet */ 484typedef u_int64_t pf_tcpopts_t; 485struct pf_os_fingerprint { 486 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 487 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 488 u_int16_t fp_wsize; /* TCP window size */ 489 u_int16_t fp_psize; /* ip->ip_len */ 490 u_int16_t fp_mss; /* TCP MSS */ 491 u_int16_t fp_flags; 492#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 493#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 494#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 495#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 496#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 497#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 498#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 499#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 500#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 501#define PF_OSFP_MSS 0x0200 /* TCP MSS */ 502#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 503#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 504#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 505#define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 506 u_int8_t fp_optcnt; /* TCP option count */ 507 u_int8_t fp_wscale; /* TCP window scaling */ 508 u_int8_t fp_ttl; /* IPv4 TTL */ 509#define PF_OSFP_MAXTTL_OFFSET 40 510/* TCP options packing */ 511#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 512#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 513#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 514#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 515#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 516#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 517#define PF_OSFP_MAX_OPTS \ 518 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 519 / PF_OSFP_TCPOPT_BITS 520 521 SLIST_ENTRY(pf_os_fingerprint) fp_next; 522}; 523 524struct pf_osfp_ioctl { 525 struct pf_osfp_entry fp_os; 526 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 527 u_int16_t fp_wsize; /* TCP window size */ 528 u_int16_t fp_psize; /* ip->ip_len */ 529 u_int16_t fp_mss; /* TCP MSS */ 530 u_int16_t fp_flags; 531 u_int8_t fp_optcnt; /* TCP option count */ 532 u_int8_t fp_wscale; /* TCP window scaling */ 533 u_int8_t fp_ttl; /* IPv4 TTL */ 534 535 int fp_getnum; /* DIOCOSFPGET number */ 536}; 537 538 539union pf_rule_ptr { 540 struct pf_rule *ptr; 541 u_int32_t nr; 542}; 543 544struct pf_rule { 545 struct pf_rule_addr src; 546 struct pf_rule_addr dst; 547#define PF_SKIP_IFP 0 548#define PF_SKIP_DIR 1 549#define PF_SKIP_AF 2 550#define PF_SKIP_PROTO 3 551#define PF_SKIP_SRC_ADDR 4 552#define PF_SKIP_SRC_PORT 5 553#define PF_SKIP_DST_ADDR 6 554#define PF_SKIP_DST_PORT 7 555#define PF_SKIP_COUNT 8 556 union pf_rule_ptr skip[PF_SKIP_COUNT]; 557#define PF_RULE_LABEL_SIZE 64 558 char label[PF_RULE_LABEL_SIZE]; 559#define PF_QNAME_SIZE 16 560 char ifname[IFNAMSIZ]; 561 char qname[PF_QNAME_SIZE]; 562 char pqname[PF_QNAME_SIZE]; 563#define PF_ANCHOR_NAME_SIZE 16 564 char anchorname[PF_ANCHOR_NAME_SIZE]; 565#define PF_TAG_NAME_SIZE 16 566 char tagname[PF_TAG_NAME_SIZE]; 567 char match_tagname[PF_TAG_NAME_SIZE]; 568 569 TAILQ_ENTRY(pf_rule) entries; 570 struct pf_pool rpool; 571 572 u_int64_t evaluations; 573 u_int64_t packets; 574 u_int64_t bytes; 575 576 struct pfi_kif *kif; 577 struct pf_anchor *anchor; 578 579 pf_osfp_t os_fingerprint; 580 581 u_int32_t timeout[PFTM_MAX]; 582 u_int32_t states; 583 u_int32_t max_states; 584 u_int32_t src_nodes; 585 u_int32_t max_src_nodes; 586 u_int32_t max_src_states; 587 u_int32_t qid; 588 u_int32_t pqid; 589 u_int32_t rt_listid; 590 u_int32_t nr; 591 592 u_int16_t return_icmp; 593 u_int16_t return_icmp6; 594 u_int16_t max_mss; 595 u_int16_t tag; 596 u_int16_t match_tag; 597 598 struct pf_rule_uid uid; 599 struct pf_rule_gid gid; 600 601 u_int32_t rule_flag; 602 u_int8_t action; 603 u_int8_t direction; 604 u_int8_t log; 605 u_int8_t quick; 606 u_int8_t ifnot; 607 u_int8_t match_tag_not; 608 u_int8_t natpass; 609 610#define PF_STATE_NORMAL 0x1 611#define PF_STATE_MODULATE 0x2 612#define PF_STATE_SYNPROXY 0x3 613 u_int8_t keep_state; 614 sa_family_t af; 615 u_int8_t proto; 616 u_int8_t type; 617 u_int8_t code; 618 u_int8_t flags; 619 u_int8_t flagset; 620 u_int8_t min_ttl; 621 u_int8_t allow_opts; 622 u_int8_t rt; 623 u_int8_t return_ttl; 624 u_int8_t tos; 625}; 626 627/* rule flags */ 628#define PFRULE_DROP 0x0000 629#define PFRULE_RETURNRST 0x0001 630#define PFRULE_FRAGMENT 0x0002 631#define PFRULE_RETURNICMP 0x0004 632#define PFRULE_RETURN 0x0008 633#define PFRULE_NOSYNC 0x0010 634#define PFRULE_SRCTRACK 0x0020 /* track source states */ 635#define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 636 637/* scrub flags */ 638#define PFRULE_NODF 0x0100 639#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 640#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 641#define PFRULE_RANDOMID 0x0800 642#define PFRULE_REASSEMBLE_TCP 0x1000 643 644/* rule flags again */ 645#define PFRULE_IFBOUND 0x00010000 /* if-bound */ 646#define PFRULE_GRBOUND 0x00020000 /* group-bound */ 647 648#define PFSTATE_HIWAT 10000 /* default state table size */ 649 650struct pf_src_node { 651 RB_ENTRY(pf_src_node) entry; 652 struct pf_addr addr; 653 struct pf_addr raddr; 654 union pf_rule_ptr rule; 655 struct pfi_kif *kif; 656 u_int32_t bytes; 657 u_int32_t packets; 658 u_int32_t states; 659 u_int32_t creation; 660 u_int32_t expire; 661 sa_family_t af; 662 u_int8_t ruletype; 663}; 664 665#define PFSNODE_HIWAT 10000 /* default source node table size */ 666 667struct pf_state_scrub { 668 u_int16_t pfss_flags; 669#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 670 u_int8_t pfss_ttl; /* stashed TTL */ 671 u_int8_t pad; 672 u_int32_t pfss_ts_mod; /* timestamp modulation */ 673}; 674 675struct pf_state_host { 676 struct pf_addr addr; 677 u_int16_t port; 678 u_int16_t pad; 679}; 680 681struct pf_state_peer { 682 u_int32_t seqlo; /* Max sequence number sent */ 683 u_int32_t seqhi; /* Max the other end ACKd + win */ 684 u_int32_t seqdiff; /* Sequence number modulator */ 685 u_int16_t max_win; /* largest window (pre scaling) */ 686 u_int8_t state; /* active state level */ 687 u_int8_t wscale; /* window scaling factor */ 688 u_int16_t mss; /* Maximum segment size option */ 689 struct pf_state_scrub *scrub; /* state is scrubbed */ 690}; 691 692TAILQ_HEAD(pf_state_queue, pf_state); 693 694struct pf_state { 695 u_int64_t id; 696 union { 697 struct { 698 RB_ENTRY(pf_state) entry_lan_ext; 699 RB_ENTRY(pf_state) entry_ext_gwy; 700 RB_ENTRY(pf_state) entry_id; 701 TAILQ_ENTRY(pf_state) entry_updates; 702 struct pfi_kif *kif; 703 } s; 704 char ifname[IFNAMSIZ]; 705 } u; 706 struct pf_state_host lan; 707 struct pf_state_host gwy; 708 struct pf_state_host ext; 709 struct pf_state_peer src; 710 struct pf_state_peer dst; 711 union pf_rule_ptr rule; 712 union pf_rule_ptr anchor; 713 union pf_rule_ptr nat_rule; 714 struct pf_addr rt_addr; 715 struct pfi_kif *rt_kif; 716 struct pf_src_node *src_node; 717 struct pf_src_node *nat_src_node; 718 u_int32_t creation; 719 u_int32_t expire; 720 u_int32_t pfsync_time; 721 u_int32_t packets[2]; 722 u_int32_t bytes[2]; 723 u_int32_t creatorid; 724 sa_family_t af; 725 u_int8_t proto; 726 u_int8_t direction; 727 u_int8_t log; 728 u_int8_t allow_opts; 729 u_int8_t timeout; 730 u_int8_t sync_flags; 731#define PFSTATE_NOSYNC 0x01 732#define PFSTATE_FROMSYNC 0x02 733 u_int8_t pad; 734}; 735 736TAILQ_HEAD(pf_rulequeue, pf_rule); 737 738struct pf_anchor; 739 740struct pf_ruleset { 741 TAILQ_ENTRY(pf_ruleset) entries; 742#define PF_RULESET_NAME_SIZE 16 743 char name[PF_RULESET_NAME_SIZE]; 744 struct { 745 struct pf_rulequeue queues[2]; 746 struct { 747 struct pf_rulequeue *ptr; 748 u_int32_t ticket; 749 int open; 750 } active, inactive; 751 } rules[PF_RULESET_MAX]; 752 struct pf_anchor *anchor; 753 u_int32_t tticket; 754 int tables; 755 int topen; 756}; 757 758TAILQ_HEAD(pf_rulesetqueue, pf_ruleset); 759 760struct pf_anchor { 761 TAILQ_ENTRY(pf_anchor) entries; 762 char name[PF_ANCHOR_NAME_SIZE]; 763 struct pf_rulesetqueue rulesets; 764 int tables; 765}; 766 767TAILQ_HEAD(pf_anchorqueue, pf_anchor); 768 769#define PF_RESERVED_ANCHOR "_pf" 770#define PF_INTERFACE_RULESET "_if" 771 772#define PFR_TFLAG_PERSIST 0x00000001 773#define PFR_TFLAG_CONST 0x00000002 774#define PFR_TFLAG_ACTIVE 0x00000004 775#define PFR_TFLAG_INACTIVE 0x00000008 776#define PFR_TFLAG_REFERENCED 0x00000010 777#define PFR_TFLAG_REFDANCHOR 0x00000020 778#define PFR_TFLAG_USRMASK 0x00000003 779#define PFR_TFLAG_SETMASK 0x0000003C 780#define PFR_TFLAG_ALLMASK 0x0000003F 781 782struct pfr_table { 783 char pfrt_anchor[PF_ANCHOR_NAME_SIZE]; 784 char pfrt_ruleset[PF_RULESET_NAME_SIZE]; 785 char pfrt_name[PF_TABLE_NAME_SIZE]; 786 u_int32_t pfrt_flags; 787 u_int8_t pfrt_fback; 788}; 789 790enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 791 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 792 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 793 794struct pfr_addr { 795 union { 796 struct in_addr _pfra_ip4addr; 797 struct in6_addr _pfra_ip6addr; 798 } pfra_u; 799 u_int8_t pfra_af; 800 u_int8_t pfra_net; 801 u_int8_t pfra_not; 802 u_int8_t pfra_fback; 803}; 804#define pfra_ip4addr pfra_u._pfra_ip4addr 805#define pfra_ip6addr pfra_u._pfra_ip6addr 806 807enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 808enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 809#define PFR_OP_XPASS PFR_OP_ADDR_MAX 810 811struct pfr_astats { 812 struct pfr_addr pfras_a; 813 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 814 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 815 long pfras_tzero; 816}; 817 818enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 819 820struct pfr_tstats { 821 struct pfr_table pfrts_t; 822 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 823 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 824 u_int64_t pfrts_match; 825 u_int64_t pfrts_nomatch; 826 long pfrts_tzero; 827 int pfrts_cnt; 828 int pfrts_refcnt[PFR_REFCNT_MAX]; 829}; 830#define pfrts_name pfrts_t.pfrt_name 831#define pfrts_flags pfrts_t.pfrt_flags 832 833SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 834struct pfr_kentry { 835 struct radix_node pfrke_node[2]; 836 union sockaddr_union pfrke_sa; 837 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 838 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 839 SLIST_ENTRY(pfr_kentry) pfrke_workq; 840 long pfrke_tzero; 841 u_int8_t pfrke_af; 842 u_int8_t pfrke_net; 843 u_int8_t pfrke_not; 844 u_int8_t pfrke_mark; 845}; 846 847SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 848RB_HEAD(pfr_ktablehead, pfr_ktable); 849struct pfr_ktable { 850 struct pfr_tstats pfrkt_ts; 851 RB_ENTRY(pfr_ktable) pfrkt_tree; 852 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 853 struct radix_node_head *pfrkt_ip4; 854 struct radix_node_head *pfrkt_ip6; 855 struct pfr_ktable *pfrkt_shadow; 856 struct pfr_ktable *pfrkt_root; 857 struct pf_ruleset *pfrkt_rs; 858 long pfrkt_larg; 859 int pfrkt_nflags; 860}; 861#define pfrkt_t pfrkt_ts.pfrts_t 862#define pfrkt_name pfrkt_t.pfrt_name 863#define pfrkt_anchor pfrkt_t.pfrt_anchor 864#define pfrkt_ruleset pfrkt_t.pfrt_ruleset 865#define pfrkt_flags pfrkt_t.pfrt_flags 866#define pfrkt_cnt pfrkt_ts.pfrts_cnt 867#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 868#define pfrkt_packets pfrkt_ts.pfrts_packets 869#define pfrkt_bytes pfrkt_ts.pfrts_bytes 870#define pfrkt_match pfrkt_ts.pfrts_match 871#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 872#define pfrkt_tzero pfrkt_ts.pfrts_tzero 873 874RB_HEAD(pf_state_tree_lan_ext, pf_state); 875RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state, 876 u.s.entry_lan_ext, pf_state_compare_lan_ext); 877 878RB_HEAD(pf_state_tree_ext_gwy, pf_state); 879RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state, 880 u.s.entry_ext_gwy, pf_state_compare_ext_gwy); 881 882struct pfi_if { 883 char pfif_name[IFNAMSIZ]; 884 u_int64_t pfif_packets[2][2][2]; 885 u_int64_t pfif_bytes[2][2][2]; 886 u_int64_t pfif_addcnt; 887 u_int64_t pfif_delcnt; 888 long pfif_tzero; 889 int pfif_states; 890 int pfif_rules; 891 int pfif_flags; 892}; 893 894TAILQ_HEAD(pfi_grouphead, pfi_kif); 895TAILQ_HEAD(pfi_statehead, pfi_kif); 896RB_HEAD(pfi_ifhead, pfi_kif); 897struct pfi_kif { 898 struct pfi_if pfik_if; 899 RB_ENTRY(pfi_kif) pfik_tree; 900 struct pf_state_tree_lan_ext pfik_lan_ext; 901 struct pf_state_tree_ext_gwy pfik_ext_gwy; 902 struct pfi_grouphead pfik_grouphead; 903 TAILQ_ENTRY(pfi_kif) pfik_instances; 904 TAILQ_ENTRY(pfi_kif) pfik_w_states; 905 struct hook_desc_head *pfik_ah_head; 906 void *pfik_ah_cookie; 907 struct pfi_kif *pfik_parent; 908 struct ifnet *pfik_ifp; 909 int pfik_states; 910 int pfik_rules; 911}; 912#define pfik_name pfik_if.pfif_name 913#define pfik_packets pfik_if.pfif_packets 914#define pfik_bytes pfik_if.pfif_bytes 915#define pfik_tzero pfik_if.pfif_tzero 916#define pfik_flags pfik_if.pfif_flags 917#define pfik_addcnt pfik_if.pfif_addcnt 918#define pfik_delcnt pfik_if.pfif_delcnt 919#define pfik_states pfik_if.pfif_states 920#define pfik_rules pfik_if.pfif_rules 921 922#define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */ 923#define PFI_IFLAG_INSTANCE 0x0002 /* single instance */ 924#define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */ 925#define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */ 926#define PFI_IFLAG_ATTACHED 0x0040 /* interface attached */ 927#define PFI_IFLAG_PLACEHOLDER 0x8000 /* placeholder group/interface */ 928 929struct pf_pdesc { 930 u_int64_t tot_len; /* Make Mickey money */ 931 union { 932 struct tcphdr *tcp; 933 struct udphdr *udp; 934 struct icmp *icmp; 935#ifdef INET6 936 struct icmp6_hdr *icmp6; 937#endif /* INET6 */ 938 void *any; 939 } hdr; 940 struct pf_addr baddr; /* address before translation */ 941 struct pf_addr naddr; /* address after translation */ 942 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 943 struct pf_addr *src; 944 struct pf_addr *dst; 945 u_int16_t *ip_sum; 946 u_int32_t p_len; /* total length of payload */ 947 u_int16_t flags; /* Let SCRUB trigger behavior in 948 * state code. Easier than tags */ 949#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 950 sa_family_t af; 951 u_int8_t proto; 952 u_int8_t tos; 953}; 954 955/* flags for RDR options */ 956#define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 957#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 958 959/* Reasons code for passing/dropping a packet */ 960#define PFRES_MATCH 0 /* Explicit match of a rule */ 961#define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 962#define PFRES_FRAG 2 /* Dropping following fragment */ 963#define PFRES_SHORT 3 /* Dropping short packet */ 964#define PFRES_NORM 4 /* Dropping by normalizer */ 965#define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 966#define PFRES_MAX 6 /* total+1 */ 967 968#define PFRES_NAMES { \ 969 "match", \ 970 "bad-offset", \ 971 "fragment", \ 972 "short", \ 973 "normalize", \ 974 "memory", \ 975 NULL \ 976} 977 978/* UDP state enumeration */ 979#define PFUDPS_NO_TRAFFIC 0 980#define PFUDPS_SINGLE 1 981#define PFUDPS_MULTIPLE 2 982 983#define PFUDPS_NSTATES 3 /* number of state levels */ 984 985#define PFUDPS_NAMES { \ 986 "NO_TRAFFIC", \ 987 "SINGLE", \ 988 "MULTIPLE", \ 989 NULL \ 990} 991 992/* Other protocol state enumeration */ 993#define PFOTHERS_NO_TRAFFIC 0 994#define PFOTHERS_SINGLE 1 995#define PFOTHERS_MULTIPLE 2 996 997#define PFOTHERS_NSTATES 3 /* number of state levels */ 998 999#define PFOTHERS_NAMES { \ 1000 "NO_TRAFFIC", \ 1001 "SINGLE", \ 1002 "MULTIPLE", \ 1003 NULL \ 1004} 1005 1006#define FCNT_STATE_SEARCH 0 1007#define FCNT_STATE_INSERT 1 1008#define FCNT_STATE_REMOVALS 2 1009#define FCNT_MAX 3 1010 1011#define SCNT_SRC_NODE_SEARCH 0 1012#define SCNT_SRC_NODE_INSERT 1 1013#define SCNT_SRC_NODE_REMOVALS 2 1014#define SCNT_MAX 3 1015 1016#define ACTION_SET(a, x) \ 1017 do { \ 1018 if ((a) != NULL) \ 1019 *(a) = (x); \ 1020 } while (0) 1021 1022#define REASON_SET(a, x) \ 1023 do { \ 1024 if ((a) != NULL) \ 1025 *(a) = (x); \ 1026 if (x < PFRES_MAX) \ 1027 pf_status.counters[x]++; \ 1028 } while (0) 1029 1030struct pf_status { 1031 u_int64_t counters[PFRES_MAX]; 1032 u_int64_t fcounters[FCNT_MAX]; 1033 u_int64_t scounters[SCNT_MAX]; 1034 u_int64_t pcounters[2][2][3]; 1035 u_int64_t bcounters[2][2]; 1036 u_int64_t stateid; 1037 u_int32_t running; 1038 u_int32_t states; 1039 u_int32_t src_nodes; 1040 u_int32_t since; 1041 u_int32_t debug; 1042 u_int32_t hostid; 1043 char ifname[IFNAMSIZ]; 1044}; 1045 1046struct cbq_opts { 1047 u_int minburst; 1048 u_int maxburst; 1049 u_int pktsize; 1050 u_int maxpktsize; 1051 u_int ns_per_byte; 1052 u_int maxidle; 1053 int minidle; 1054 u_int offtime; 1055 int flags; 1056}; 1057 1058struct priq_opts { 1059 int flags; 1060}; 1061 1062struct hfsc_opts { 1063 /* real-time service curve */ 1064 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1065 u_int rtsc_d; /* the x-projection of m1 in msec */ 1066 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1067 /* link-sharing service curve */ 1068 u_int lssc_m1; 1069 u_int lssc_d; 1070 u_int lssc_m2; 1071 /* upper-limit service curve */ 1072 u_int ulsc_m1; 1073 u_int ulsc_d; 1074 u_int ulsc_m2; 1075 int flags; 1076}; 1077 1078struct pf_altq { 1079 char ifname[IFNAMSIZ]; 1080 1081 void *altq_disc; /* discipline-specific state */ 1082 TAILQ_ENTRY(pf_altq) entries; 1083 1084 /* scheduler spec */ 1085 u_int8_t scheduler; /* scheduler type */ 1086 u_int16_t tbrsize; /* tokenbucket regulator size */ 1087 u_int32_t ifbandwidth; /* interface bandwidth */ 1088 1089 /* queue spec */ 1090 char qname[PF_QNAME_SIZE]; /* queue name */ 1091 char parent[PF_QNAME_SIZE]; /* parent name */ 1092 u_int32_t parent_qid; /* parent queue id */ 1093 u_int32_t bandwidth; /* queue bandwidth */ 1094 u_int8_t priority; /* priority */ 1095 u_int16_t qlimit; /* queue size limit */ 1096 u_int16_t flags; /* misc flags */ 1097 union { 1098 struct cbq_opts cbq_opts; 1099 struct priq_opts priq_opts; 1100 struct hfsc_opts hfsc_opts; 1101 } pq_u; 1102 1103 u_int32_t qid; /* return value */ 1104}; 1105 1106struct pf_tag { 1107 u_int16_t tag; /* tag id */ 1108}; 1109 1110struct pf_tagname { 1111 TAILQ_ENTRY(pf_tagname) entries; 1112 char name[PF_TAG_NAME_SIZE]; 1113 u_int16_t tag; 1114 int ref; 1115}; 1116 1117#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1118#define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1119#define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1120#define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1121 1122/* 1123 * ioctl parameter structures 1124 */ 1125 1126struct pfioc_pooladdr { 1127 u_int32_t action; 1128 u_int32_t ticket; 1129 u_int32_t nr; 1130 u_int32_t r_num; 1131 u_int8_t r_action; 1132 u_int8_t r_last; 1133 u_int8_t af; 1134 char anchor[PF_ANCHOR_NAME_SIZE]; 1135 char ruleset[PF_RULESET_NAME_SIZE]; 1136 struct pf_pooladdr addr; 1137}; 1138 1139struct pfioc_rule { 1140 u_int32_t action; 1141 u_int32_t ticket; 1142 u_int32_t pool_ticket; 1143 u_int32_t nr; 1144 char anchor[PF_ANCHOR_NAME_SIZE]; 1145 char ruleset[PF_RULESET_NAME_SIZE]; 1146 struct pf_rule rule; 1147}; 1148 1149struct pfioc_natlook { 1150 struct pf_addr saddr; 1151 struct pf_addr daddr; 1152 struct pf_addr rsaddr; 1153 struct pf_addr rdaddr; 1154 u_int16_t sport; 1155 u_int16_t dport; 1156 u_int16_t rsport; 1157 u_int16_t rdport; 1158 sa_family_t af; 1159 u_int8_t proto; 1160 u_int8_t direction; 1161}; 1162 1163struct pfioc_state { 1164 u_int32_t nr; 1165 struct pf_state state; 1166}; 1167 1168struct pfioc_state_kill { 1169 /* XXX returns the number of states killed in psk_af */ 1170 sa_family_t psk_af; 1171 int psk_proto; 1172 struct pf_rule_addr psk_src; 1173 struct pf_rule_addr psk_dst; 1174 char psk_ifname[IFNAMSIZ]; 1175}; 1176 1177struct pfioc_states { 1178 int ps_len; 1179 union { 1180 caddr_t psu_buf; 1181 struct pf_state *psu_states; 1182 } ps_u; 1183#define ps_buf ps_u.psu_buf 1184#define ps_states ps_u.psu_states 1185}; 1186 1187struct pfioc_src_nodes { 1188 int psn_len; 1189 union { 1190 caddr_t psu_buf; 1191 struct pf_src_node *psu_src_nodes; 1192 } psn_u; 1193#define psn_buf psn_u.psu_buf 1194#define psn_src_nodes psn_u.psu_src_nodes 1195}; 1196 1197struct pfioc_if { 1198 char ifname[IFNAMSIZ]; 1199}; 1200 1201struct pfioc_tm { 1202 int timeout; 1203 int seconds; 1204}; 1205 1206struct pfioc_limit { 1207 int index; 1208 unsigned limit; 1209}; 1210 1211struct pfioc_altq { 1212 u_int32_t action; 1213 u_int32_t ticket; 1214 u_int32_t nr; 1215 struct pf_altq altq; 1216}; 1217 1218struct pfioc_qstats { 1219 u_int32_t ticket; 1220 u_int32_t nr; 1221 void *buf; 1222 int nbytes; 1223 u_int8_t scheduler; 1224}; 1225 1226struct pfioc_anchor { 1227 u_int32_t nr; 1228 char name[PF_ANCHOR_NAME_SIZE]; 1229}; 1230 1231struct pfioc_ruleset { 1232 u_int32_t nr; 1233 char anchor[PF_ANCHOR_NAME_SIZE]; 1234 char name[PF_RULESET_NAME_SIZE]; 1235}; 1236 1237#define PF_RULESET_ALTQ (PF_RULESET_MAX) 1238#define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1239struct pfioc_trans { 1240 int size; /* number of elements */ 1241 int esize; /* size of each element in bytes */ 1242 struct pfioc_trans_e { 1243 int rs_num; 1244 char anchor[PF_ANCHOR_NAME_SIZE]; 1245 char ruleset[PF_RULESET_NAME_SIZE]; 1246 u_int32_t ticket; 1247 } *array; 1248}; 1249 1250#define PFR_FLAG_ATOMIC 0x00000001 1251#define PFR_FLAG_DUMMY 0x00000002 1252#define PFR_FLAG_FEEDBACK 0x00000004 1253#define PFR_FLAG_CLSTATS 0x00000008 1254#define PFR_FLAG_ADDRSTOO 0x00000010 1255#define PFR_FLAG_REPLACE 0x00000020 1256#define PFR_FLAG_ALLRSETS 0x00000040 1257#define PFR_FLAG_ALLMASK 0x0000007F 1258#ifdef _KERNEL 1259#define PFR_FLAG_USERIOCTL 0x10000000 1260#endif 1261 1262struct pfioc_table { 1263 struct pfr_table pfrio_table; 1264 void *pfrio_buffer; 1265 int pfrio_esize; 1266 int pfrio_size; 1267 int pfrio_size2; 1268 int pfrio_nadd; 1269 int pfrio_ndel; 1270 int pfrio_nchange; 1271 int pfrio_flags; 1272 u_int32_t pfrio_ticket; 1273}; 1274#define pfrio_exists pfrio_nadd 1275#define pfrio_nzero pfrio_nadd 1276#define pfrio_nmatch pfrio_nadd 1277#define pfrio_naddr pfrio_size2 1278#define pfrio_setflag pfrio_size2 1279#define pfrio_clrflag pfrio_nadd 1280 1281 1282#define PFI_FLAG_GROUP 0x0001 /* gets groups of interfaces */ 1283#define PFI_FLAG_INSTANCE 0x0002 /* gets single interfaces */ 1284#define PFI_FLAG_ALLMASK 0x0003 1285 1286struct pfioc_iface { 1287 char pfiio_name[IFNAMSIZ]; 1288 void *pfiio_buffer; 1289 int pfiio_esize; 1290 int pfiio_size; 1291 int pfiio_nzero; 1292 int pfiio_flags; 1293}; 1294 1295 1296/* 1297 * ioctl operations 1298 */ 1299 1300#define DIOCSTART _IO ('D', 1) 1301#define DIOCSTOP _IO ('D', 2) 1302#define DIOCBEGINRULES _IOWR('D', 3, struct pfioc_rule) 1303#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1304#define DIOCCOMMITRULES _IOWR('D', 5, struct pfioc_rule) 1305#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1306#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1307/* XXX cut 8 - 17 */ 1308#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1309#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1310#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1311#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1312#define DIOCCLRSTATUS _IO ('D', 22) 1313#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1314#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1315#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1316#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1317/* XXX cut 26 - 28 */ 1318#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1319#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1320#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1321#define DIOCCLRRULECTRS _IO ('D', 38) 1322#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1323#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1324#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1325#define DIOCSTARTALTQ _IO ('D', 42) 1326#define DIOCSTOPALTQ _IO ('D', 43) 1327#define DIOCBEGINALTQS _IOWR('D', 44, u_int32_t) 1328#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1329#define DIOCCOMMITALTQS _IOWR('D', 46, u_int32_t) 1330#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1331#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1332#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1333#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1334#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1335#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1336#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1337#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1338#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1339#define DIOCGETANCHORS _IOWR('D', 56, struct pfioc_anchor) 1340#define DIOCGETANCHOR _IOWR('D', 57, struct pfioc_anchor) 1341#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1342#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1343#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1344#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1345#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1346#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1347#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1348#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1349#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1350#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1351#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1352#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1353#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1354#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1355#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1356#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1357#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1358#define DIOCRINABEGIN _IOWR('D', 75, struct pfioc_table) 1359#define DIOCRINACOMMIT _IOWR('D', 76, struct pfioc_table) 1360#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1361#define DIOCOSFPFLUSH _IO('D', 78) 1362#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1363#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1364#define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1365#define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1366#define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1367#define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1368#define DIOCCLRSRCNODES _IO('D', 85) 1369#define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1370#define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1371#define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface) 1372#ifdef __FreeBSD__ 1373struct pf_ifspeed { 1374 char ifname[IFNAMSIZ]; 1375 u_int32_t baudrate; 1376}; 1377#define DIOCGIFSPEED _IOWR('D', 89, struct pf_ifspeed) 1378#endif 1379 1380#ifdef _KERNEL 1381RB_HEAD(pf_src_tree, pf_src_node); 1382RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1383extern struct pf_src_tree tree_src_tracking; 1384 1385RB_HEAD(pf_state_tree_id, pf_state); 1386RB_PROTOTYPE(pf_state_tree_id, pf_state, 1387 entry_id, pf_state_compare_id); 1388extern struct pf_state_tree_id tree_id; 1389extern struct pf_state_queue state_updates; 1390 1391extern struct pf_anchorqueue pf_anchors; 1392extern struct pf_ruleset pf_main_ruleset; 1393TAILQ_HEAD(pf_poolqueue, pf_pool); 1394extern struct pf_poolqueue pf_pools[2]; 1395TAILQ_HEAD(pf_altqqueue, pf_altq); 1396extern struct pf_altqqueue pf_altqs[2]; 1397extern struct pf_palist pf_pabuf; 1398extern struct pfi_kif **pfi_index2kif; 1399 1400extern u_int32_t ticket_altqs_active; 1401extern u_int32_t ticket_altqs_inactive; 1402extern int altqs_inactive_open; 1403extern u_int32_t ticket_pabuf; 1404extern struct pf_altqqueue *pf_altqs_active; 1405extern struct pf_altqqueue *pf_altqs_inactive; 1406extern struct pf_poolqueue *pf_pools_active; 1407extern struct pf_poolqueue *pf_pools_inactive; 1408extern int pf_tbladdr_setup(struct pf_ruleset *, 1409 struct pf_addr_wrap *); 1410extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1411extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1412extern void pf_calc_skip_steps(struct pf_rulequeue *); 1413extern void pf_update_anchor_rules(void); 1414#ifdef __FreeBSD__ 1415extern uma_zone_t pf_src_tree_pl, pf_rule_pl; 1416extern uma_zone_t pf_state_pl, pf_altq_pl, pf_pooladdr_pl; 1417extern uma_zone_t pfr_ktable_pl, pfr_kentry_pl; 1418extern uma_zone_t pf_cache_pl, pf_cent_pl; 1419extern uma_zone_t pf_state_scrub_pl; 1420extern uma_zone_t pfi_addr_pl; 1421#else 1422extern struct pool pf_src_tree_pl, pf_rule_pl; 1423extern struct pool pf_state_pl, pf_altq_pl, pf_pooladdr_pl; 1424extern struct pool pf_state_scrub_pl; 1425#endif 1426extern void pf_purge_timeout(void *); 1427extern void pf_purge_expired_src_nodes(void); 1428extern void pf_purge_expired_states(void); 1429extern int pf_insert_state(struct pfi_kif *, 1430 struct pf_state *); 1431extern int pf_insert_src_node(struct pf_src_node **, 1432 struct pf_rule *, struct pf_addr *, 1433 sa_family_t); 1434void pf_src_tree_remove_state(struct pf_state *); 1435extern struct pf_state *pf_find_state_byid(struct pf_state *); 1436extern struct pf_state *pf_find_state_all(struct pf_state *key, 1437 u_int8_t tree, int *more); 1438extern struct pf_anchor *pf_find_anchor(const char *); 1439extern struct pf_ruleset *pf_find_ruleset(char *, char *); 1440extern struct pf_ruleset *pf_find_or_create_ruleset( 1441 char[PF_ANCHOR_NAME_SIZE], 1442 char[PF_RULESET_NAME_SIZE]); 1443extern void pf_remove_if_empty_ruleset( 1444 struct pf_ruleset *); 1445 1446extern struct ifnet *sync_ifp; 1447extern struct pf_rule pf_default_rule; 1448extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1449 u_int8_t); 1450void pf_rm_rule(struct pf_rulequeue *, 1451 struct pf_rule *); 1452 1453#ifdef INET 1454int pf_test(int, struct ifnet *, struct mbuf **); 1455#endif /* INET */ 1456 1457#ifdef INET6 1458int pf_test6(int, struct ifnet *, struct mbuf **); 1459void pf_poolmask(struct pf_addr *, struct pf_addr*, 1460 struct pf_addr *, struct pf_addr *, u_int8_t); 1461void pf_addr_inc(struct pf_addr *, sa_family_t); 1462#endif /* INET6 */ 1463 1464void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1465 sa_family_t); 1466void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1467int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1468 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *); 1469int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1470 struct pf_addr *, sa_family_t); 1471int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1472int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1473int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1474int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1475 1476void pf_normalize_init(void); 1477int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *); 1478int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *); 1479int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1480 struct pf_pdesc *); 1481void pf_normalize_tcp_cleanup(struct pf_state *); 1482int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1483 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1484int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1485 u_short *, struct tcphdr *, struct pf_state_peer *, 1486 struct pf_state_peer *, int *); 1487u_int32_t 1488 pf_state_expires(const struct pf_state *); 1489void pf_purge_expired_fragments(void); 1490int pf_routable(struct pf_addr *addr, sa_family_t af); 1491void pfr_initialize(void); 1492int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1493void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1494 u_int64_t, int, int, int); 1495int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1496 struct pf_addr **, struct pf_addr **, sa_family_t); 1497void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1498struct pfr_ktable * 1499 pfr_attach_table(struct pf_ruleset *, char *); 1500void pfr_detach_table(struct pfr_ktable *); 1501int pfr_clr_tables(struct pfr_table *, int *, int); 1502int pfr_add_tables(struct pfr_table *, int, int *, int); 1503int pfr_del_tables(struct pfr_table *, int, int *, int); 1504int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1505int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1506int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1507int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1508int pfr_clr_addrs(struct pfr_table *, int *, int); 1509int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1510 int); 1511int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1512 int); 1513int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1514 int *, int *, int *, int); 1515int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1516int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1517int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1518 int); 1519int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1520 int); 1521int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1522int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1523int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1524int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1525 int *, u_int32_t, int); 1526 1527void pfi_initialize(void); 1528#ifdef __FreeBSD__ 1529void pfi_cleanup(void); 1530#endif 1531void pfi_attach_clone(struct if_clone *); 1532void pfi_attach_ifnet(struct ifnet *); 1533void pfi_detach_ifnet(struct ifnet *); 1534struct pfi_kif *pfi_lookup_create(const char *); 1535struct pfi_kif *pfi_lookup_if(const char *); 1536int pfi_maybe_destroy(struct pfi_kif *); 1537struct pfi_kif *pfi_attach_rule(const char *); 1538void pfi_detach_rule(struct pfi_kif *); 1539void pfi_attach_state(struct pfi_kif *); 1540void pfi_detach_state(struct pfi_kif *); 1541int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1542void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1543void pfi_dynaddr_remove(struct pf_addr_wrap *); 1544void pfi_fill_oldstatus(struct pf_status *); 1545int pfi_clr_istats(const char *, int *, int); 1546int pfi_get_ifaces(const char *, struct pfi_if *, int *, int); 1547int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1548 sa_family_t); 1549 1550extern struct pfi_statehead pfi_statehead; 1551 1552u_int16_t pf_tagname2tag(char *); 1553void pf_tag2tagname(u_int16_t, char *); 1554void pf_tag_unref(u_int16_t); 1555int pf_tag_packet(struct mbuf *, struct pf_tag *, int); 1556u_int32_t pf_qname2qid(char *); 1557void pf_qid2qname(u_int32_t, char *); 1558void pf_qid_unref(u_int32_t); 1559 1560extern struct pf_status pf_status; 1561 1562#ifdef __FreeBSD__ 1563extern uma_zone_t pf_frent_pl, pf_frag_pl; 1564#else 1565extern struct pool pf_frent_pl, pf_frag_pl; 1566#endif 1567 1568struct pf_pool_limit { 1569 void *pp; 1570 unsigned limit; 1571}; 1572extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1573 1574#ifdef __FreeBSD__ 1575struct pf_frent { 1576 LIST_ENTRY(pf_frent) fr_next; 1577 struct ip *fr_ip; 1578 struct mbuf *fr_m; 1579}; 1580 1581struct pf_frcache { 1582 LIST_ENTRY(pf_frcache) fr_next; 1583 uint16_t fr_off; 1584 uint16_t fr_end; 1585}; 1586 1587struct pf_fragment { 1588 RB_ENTRY(pf_fragment) fr_entry; 1589 TAILQ_ENTRY(pf_fragment) frag_next; 1590 struct in_addr fr_src; 1591 struct in_addr fr_dst; 1592 u_int8_t fr_p; /* protocol of this fragment */ 1593 u_int8_t fr_flags; /* status flags */ 1594 u_int16_t fr_id; /* fragment id for reassemble */ 1595 u_int16_t fr_max; /* fragment data max */ 1596 u_int32_t fr_timeout; 1597#define fr_queue fr_u.fru_queue 1598#define fr_cache fr_u.fru_cache 1599 union { 1600 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */ 1601 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */ 1602 } fr_u; 1603}; 1604#endif /* (__FreeBSD__) */ 1605 1606#endif /* _KERNEL */ 1607 1608/* The fingerprint functions can be linked into userland programs (tcpdump) */ 1609int pf_osfp_add(struct pf_osfp_ioctl *); 1610#ifdef _KERNEL 1611struct pf_osfp_enlist * 1612 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1613 const struct tcphdr *); 1614#endif /* _KERNEL */ 1615struct pf_osfp_enlist * 1616 pf_osfp_fingerprint_hdr(const struct ip *, const struct tcphdr *); 1617void pf_osfp_flush(void); 1618int pf_osfp_get(struct pf_osfp_ioctl *); 1619#ifdef __FreeBSD__ 1620int pf_osfp_initialize(void); 1621void pf_osfp_cleanup(void); 1622#else 1623void pf_osfp_initialize(void); 1624#endif 1625int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1626struct pf_os_fingerprint * 1627 pf_osfp_validate(void); 1628 1629 1630#endif /* _NET_PFVAR_H_ */
|