1 /* 2 * Copyright (C) 1993-2001, 2003 by Darren Reed. 3 * 4 * See the IPFILTER.LICENCE file for details on licencing. 5 * 6 * @(#)ip_fil.h 1.35 6/5/96 7 * $Id: ip_fil.h,v 2.170.2.22 2005/07/16 05:55:35 darrenr Exp $ 8 * 9 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 10 * 11 * Copyright (c) 2014, Joyent, Inc. All rights reserved. 12 */ 13 14 #ifndef __IP_FIL_H__ 15 #define __IP_FIL_H__ 16 17 #include "netinet/ip_compat.h" 18 #include <sys/zone.h> 19 20 #ifndef SOLARIS 21 # define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4))) 22 #endif 23 24 #ifndef __P 25 # ifdef __STDC__ 26 # define __P(x) x 27 # else 28 # define __P(x) () 29 # endif 30 #endif 31 32 #if defined(__STDC__) || defined(__GNUC__) || defined(_AIX51) 33 # define SIOCADAFR _IOW('r', 60, struct ipfobj) 34 # define SIOCRMAFR _IOW('r', 61, struct ipfobj) 35 # define SIOCSETFF _IOW('r', 62, u_int) 36 # define SIOCGETFF _IOR('r', 63, u_int) 37 # define SIOCGETFS _IOWR('r', 64, struct ipfobj) 38 # define SIOCIPFFL _IOWR('r', 65, int) 39 # define SIOCIPFFB _IOR('r', 66, int) 40 # define SIOCADIFR _IOW('r', 67, struct ipfobj) 41 # define SIOCRMIFR _IOW('r', 68, struct ipfobj) 42 # define SIOCSWAPA _IOR('r', 69, u_int) 43 # define SIOCINAFR _IOW('r', 70, struct ipfobj) 44 # define SIOCINIFR _IOW('r', 71, struct ipfobj) 45 # define SIOCFRENB _IOW('r', 72, u_int) 46 # define SIOCFRSYN _IOW('r', 73, u_int) 47 # define SIOCFRZST _IOWR('r', 74, struct ipfobj) 48 # define SIOCZRLST _IOWR('r', 75, struct ipfobj) 49 # define SIOCAUTHW _IOWR('r', 76, struct ipfobj) 50 # define SIOCAUTHR _IOWR('r', 77, struct ipfobj) 51 # define SIOCATHST _IOWR('r', 78, struct ipfobj) 52 # define SIOCSTLCK _IOWR('r', 79, u_int) 53 # define SIOCSTPUT _IOWR('r', 80, struct ipfobj) 54 # define SIOCSTGET _IOWR('r', 81, struct ipfobj) 55 # define SIOCSTGSZ _IOWR('r', 82, struct ipfobj) 56 # define SIOCGFRST _IOWR('r', 83, struct ipfobj) 57 # define SIOCSETLG _IOWR('r', 84, int) 58 # define SIOCGETLG _IOWR('r', 85, int) 59 # define SIOCFUNCL _IOWR('r', 86, struct ipfunc_resolve) 60 # define SIOCIPFGETNEXT _IOWR('r', 87, struct ipfobj) 61 # define SIOCIPFGET _IOWR('r', 88, struct ipfobj) 62 # define SIOCIPFSET _IOWR('r', 89, struct ipfobj) 63 # define SIOCIPFL6 _IOWR('r', 90, int) 64 # define SIOCIPFLP _IOWR('r', 91, int) 65 # define SIOCIPFITER _IOWR('r', 92, struct ipfobj) 66 # define SIOCGENITER _IOWR('r', 93, struct ipfobj) 67 # define SIOCGTABL _IOWR('r', 94, struct ipfobj) 68 # define SIOCIPFDELTOK _IOWR('r', 95, int) 69 # define SIOCLOOKUPITER _IOWR('r', 96, struct ipfobj) 70 #else 71 # define SIOCADAFR _IOW(r, 60, struct ipfobj) 72 # define SIOCRMAFR _IOW(r, 61, struct ipfobj) 73 # define SIOCSETFF _IOW(r, 62, u_int) 74 # define SIOCGETFF _IOR(r, 63, u_int) 75 # define SIOCGETFS _IOWR(r, 64, struct ipfobj) 76 # define SIOCIPFFL _IOWR(r, 65, int) 77 # define SIOCIPFFB _IOR(r, 66, int) 78 # define SIOCADIFR _IOW(r, 67, struct ipfobj) 79 # define SIOCRMIFR _IOW(r, 68, struct ipfobj) 80 # define SIOCSWAPA _IOR(r, 69, u_int) 81 # define SIOCINAFR _IOW(r, 70, struct ipfobj) 82 # define SIOCINIFR _IOW(r, 71, struct ipfobj) 83 # define SIOCFRENB _IOW(r, 72, u_int) 84 # define SIOCFRSYN _IOW(r, 73, u_int) 85 # define SIOCFRZST _IOWR(r, 74, struct ipfobj) 86 # define SIOCZRLST _IOWR(r, 75, struct ipfobj) 87 # define SIOCAUTHW _IOWR(r, 76, struct ipfobj) 88 # define SIOCAUTHR _IOWR(r, 77, struct ipfobj) 89 # define SIOCATHST _IOWR(r, 78, struct ipfobj) 90 # define SIOCSTLCK _IOWR(r, 79, u_int) 91 # define SIOCSTPUT _IOWR(r, 80, struct ipfobj) 92 # define SIOCSTGET _IOWR(r, 81, struct ipfobj) 93 # define SIOCSTGSZ _IOWR(r, 82, struct ipfobj) 94 # define SIOCGFRST _IOWR(r, 83, struct ipfobj) 95 # define SIOCSETLG _IOWR(r, 84, int) 96 # define SIOCGETLG _IOWR(r, 85, int) 97 # define SIOCFUNCL _IOWR(r, 86, struct ipfunc_resolve) 98 # define SIOCIPFGETNEXT _IOWR(r, 87, struct ipfobj) 99 # define SIOCIPFGET _IOWR(r, 88, struct ipfobj) 100 # define SIOCIPFSET _IOWR(r, 89, struct ipfobj) 101 # define SIOCIPFL6 _IOWR(r, 90, int) 102 # define SIOCIPFLP _IOWR(r, 91, int) 103 # define SIOCIPFITER _IOWR(r, 92, struct ipfobj) 104 # define SIOCGENITER _IOWR(r, 93, struct ipfobj) 105 # define SIOCGTABL _IOWR(r, 94, struct ipfobj) 106 # define SIOCIPFDELTOK _IOWR(r, 95, int) 107 # define SIOCLOOKUPITER _IOWR(r, 96, struct ipfobj) 108 #endif 109 #define SIOCADDFR SIOCADAFR 110 #define SIOCDELFR SIOCRMAFR 111 #define SIOCINSFR SIOCINAFR 112 # define SIOCIPFZONESET _IOWR('r', 97, struct ipfzoneobj) 113 114 /* 115 * What type of table is getting flushed? 116 */ 117 118 #define NAT_FLUSH 1 119 #define STATE_FLUSH 2 120 121 /* 122 * What table flush options are available? 123 */ 124 125 #define FLUSH_LIST 0 126 #define FLUSH_TABLE_ALL 1 /* Flush entire table */ 127 #define FLUSH_TABLE_CLOSING 2 /* Flush "closing" entries" */ 128 #define FLUSH_TABLE_EXTRA 3 /* Targetted flush: almost closed, long idle */ 129 130 #define VALID_TABLE_FLUSH_OPT(x) ((x) >= 1 && (x) <= 3) 131 132 /* 133 * Define the default hi and lo watermarks used when flushing the 134 * tables. The values represent percent full of respective tables. 135 */ 136 137 #define NAT_FLUSH_HI 95 138 #define NAT_FLUSH_LO 75 139 140 #define ST_FLUSH_HI 95 141 #define ST_FLUSH_LO 75 142 143 /* 144 * How full are the tables? 145 */ 146 147 #define NAT_TAB_WATER_LEVEL(x) ((x)->ifs_nat_stats.ns_inuse * 100 \ 148 / (x)->ifs_ipf_nattable_max) 149 150 #define ST_TAB_WATER_LEVEL(x) ((x)->ifs_ips_num * 100 \ 151 / (x)->ifs_fr_statemax) 152 153 struct ipscan; 154 struct ifnet; 155 156 typedef struct ipf_stack ipf_stack_t; 157 typedef struct fr_info fr_info_t; 158 159 typedef int (* lookupfunc_t) __P((void *, int, void *, fr_info_t *, ipf_stack_t *)); 160 161 /* 162 * i6addr is used as a container for both IPv4 and IPv6 addresses, as well 163 * as other types of objects, depending on its qualifier. 164 */ 165 #ifdef USE_INET6 166 typedef union i6addr { 167 u_32_t i6[4]; 168 struct in_addr in4; 169 struct in6_addr in6; 170 void *vptr[2]; 171 lookupfunc_t lptr[2]; 172 } i6addr_t; 173 #define in6_addr8 in6.s6_addr 174 #else 175 typedef union i6addr { 176 u_32_t i6[4]; 177 struct in_addr in4; 178 void *vptr[2]; 179 lookupfunc_t lptr[2]; 180 } i6addr_t; 181 #endif 182 183 #define in4_addr in4.s_addr 184 #define iplookupnum i6[0] 185 #define iplookuptype i6[1] 186 /* 187 * NOTE: These DO overlap the above on 64bit systems and this IS recognised. 188 */ 189 #define iplookupptr vptr[0] 190 #define iplookupfunc lptr[1] 191 192 #define I60(x) (((i6addr_t *)(x))->i6[0]) 193 #define I61(x) (((i6addr_t *)(x))->i6[1]) 194 #define I62(x) (((i6addr_t *)(x))->i6[2]) 195 #define I63(x) (((i6addr_t *)(x))->i6[3]) 196 #define HI60(x) ntohl(((i6addr_t *)(x))->i6[0]) 197 #define HI61(x) ntohl(((i6addr_t *)(x))->i6[1]) 198 #define HI62(x) ntohl(((i6addr_t *)(x))->i6[2]) 199 #define HI63(x) ntohl(((i6addr_t *)(x))->i6[3]) 200 201 #define IP6_EQ(a,b) ((I63(a) == I63(b)) && (I62(a) == I62(b)) && \ 202 (I61(a) == I61(b)) && (I60(a) == I60(b))) 203 #define IP6_NEQ(a,b) ((I63(a) != I63(b)) || (I62(a) != I62(b)) || \ 204 (I61(a) != I61(b)) || (I60(a) != I60(b))) 205 #define IP6_ISZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) == 0) 206 #define IP6_NOTZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) != 0) 207 #define IP6_ISONES(a) ((I63(a) == 0xffffffff) && (I62(a) == 0xffffffff) && \ 208 (I61(a) == 0xffffffff) && (I60(a) == 0xffffffff)) 209 #define IP6_GT(a,b) (ntohl(HI60(a)) > ntohl(HI60(b)) || \ 210 (HI60(a) == HI60(b) && \ 211 (ntohl(HI61(a)) > ntohl(HI61(b)) || \ 212 (HI61(a) == HI61(b) && \ 213 (ntohl(HI62(a)) > ntohl(HI62(b)) || \ 214 (HI62(a) == HI62(b) && \ 215 ntohl(HI63(a)) > ntohl(HI63(b)))))))) 216 #define IP6_LT(a,b) (ntohl(HI60(a)) < ntohl(HI60(b)) || \ 217 (HI60(a) == HI60(b) && \ 218 (ntohl(HI61(a)) < ntohl(HI61(b)) || \ 219 (HI61(a) == HI61(b) && \ 220 (ntohl(HI62(a)) < ntohl(HI62(b)) || \ 221 (HI62(a) == HI62(b) && \ 222 ntohl(HI63(a)) < ntohl(HI63(b)))))))) 223 #define NLADD(n,x) htonl(ntohl(n) + (x)) 224 #define IP6_INC(a) \ 225 { i6addr_t *_i6 = (i6addr_t *)(a); \ 226 _i6->i6[3] = NLADD(_i6->i6[3], 1); \ 227 if (_i6->i6[3] == 0) { \ 228 _i6->i6[2] = NLADD(_i6->i6[2], 1); \ 229 if (_i6->i6[2] == 0) { \ 230 _i6->i6[1] = NLADD(_i6->i6[1], 1); \ 231 if (_i6->i6[1] == 0) { \ 232 _i6->i6[0] = NLADD(_i6->i6[0], 1); \ 233 } \ 234 } \ 235 } \ 236 } 237 #define IP6_ADD(a,x,d) \ 238 { i6addr_t *_s = (i6addr_t *)(a); \ 239 i6addr_t *_d = (i6addr_t *)(d); \ 240 _d->i6[3] = NLADD(_s->i6[3], x); \ 241 if (ntohl(_d->i6[3]) < ntohl(_s->i6[3])) { \ 242 _d->i6[2] = NLADD(_d->i6[2], 1); \ 243 if (ntohl(_d->i6[2]) < ntohl(_s->i6[2])) { \ 244 _d->i6[1] = NLADD(_d->i6[1], 1); \ 245 if (ntohl(_d->i6[1]) < ntohl(_s->i6[1])) { \ 246 _d->i6[0] = NLADD(_d->i6[0], 1); \ 247 } \ 248 } \ 249 } \ 250 } 251 #define IP6_AND(a,b,d) { i6addr_t *_s1 = (i6addr_t *)(a); \ 252 i6addr_t *_s2 = (i6addr_t *)(b); \ 253 i6addr_t *_d = (i6addr_t *)(d); \ 254 _d->i6[0] = _s1->i6[0] & _s2->i6[0]; \ 255 _d->i6[1] = _s1->i6[1] & _s2->i6[1]; \ 256 _d->i6[2] = _s1->i6[2] & _s2->i6[2]; \ 257 _d->i6[3] = _s1->i6[3] & _s2->i6[3]; \ 258 } 259 #define IP6_MASKEQ(a,m,b) \ 260 (((I60(a) & I60(m)) == I60(b)) && \ 261 ((I61(a) & I61(m)) == I61(b)) && \ 262 ((I62(a) & I62(m)) == I62(b)) && \ 263 ((I63(a) & I63(m)) == I63(b))) 264 #define IP6_MASKNEQ(a,m,b) \ 265 (((I60(a) & I60(m)) != I60(b)) || \ 266 ((I61(a) & I61(m)) != I61(b)) || \ 267 ((I62(a) & I62(m)) != I62(b)) || \ 268 ((I63(a) & I63(m)) != I63(b))) 269 #define IP6_MERGE(a,b,c) \ 270 { i6addr_t *_d, *_s1, *_s2; \ 271 _d = (i6addr_t *)(a); \ 272 _s1 = (i6addr_t *)(b); \ 273 _s2 = (i6addr_t *)(c); \ 274 _d->i6[0] |= _s1->i6[0] & ~_s2->i6[0]; \ 275 _d->i6[1] |= _s1->i6[1] & ~_s2->i6[1]; \ 276 _d->i6[2] |= _s1->i6[2] & ~_s2->i6[2]; \ 277 _d->i6[3] |= _s1->i6[3] & ~_s2->i6[3]; \ 278 } 279 280 281 typedef struct fr_ip { 282 u_32_t fi_v:4; /* IP version */ 283 u_32_t fi_xx:4; /* spare */ 284 u_32_t fi_tos:8; /* IP packet TOS */ 285 u_32_t fi_ttl:8; /* IP packet TTL */ 286 u_32_t fi_p:8; /* IP packet protocol */ 287 u_32_t fi_optmsk; /* bitmask composed from IP options */ 288 i6addr_t fi_src; /* source address from packet */ 289 i6addr_t fi_dst; /* destination address from packet */ 290 u_short fi_secmsk; /* bitmask composed from IP security options */ 291 u_short fi_auth; /* authentication code from IP sec. options */ 292 u_32_t fi_flx; /* packet flags */ 293 u_32_t fi_tcpmsk; /* TCP options set/reset */ 294 u_32_t fi_res1; /* RESERVED */ 295 } fr_ip_t; 296 297 /* 298 * For use in fi_flx 299 */ 300 #define FI_TCPUDP 0x0001 /* TCP/UCP implied comparison*/ 301 #define FI_OPTIONS 0x0002 302 #define FI_FRAG 0x0004 303 #define FI_SHORT 0x0008 304 #define FI_NATED 0x0010 305 #define FI_MULTICAST 0x0020 306 #define FI_BROADCAST 0x0040 307 #define FI_MBCAST 0x0080 308 #define FI_STATE 0x0100 309 #define FI_BADNAT 0x0200 310 #define FI_BAD 0x0400 311 #define FI_OOW 0x0800 /* Out of state window, else match */ 312 #define FI_ICMPERR 0x1000 313 #define FI_FRAGBODY 0x2000 314 #define FI_BADSRC 0x4000 315 #define FI_LOWTTL 0x8000 316 #define FI_CMP 0xcf03 /* Not FI_FRAG,FI_NATED,FI_FRAGTAIL,broadcast */ 317 #define FI_ICMPCMP 0x0003 /* Flags we can check for ICMP error packets */ 318 #define FI_WITH 0xeffe /* Not FI_TCPUDP */ 319 #define FI_V6EXTHDR 0x10000 320 #define FI_COALESCE 0x20000 321 #define FI_ICMPQUERY 0x40000 322 #define FI_NEWNAT 0x80000 323 #define FI_MOREFRAG 0x100000 324 #define FI_NEG_OOW 0x10000000 /* packet underflows TCP window */ 325 #define FI_NOCKSUM 0x20000000 /* don't do a L4 checksum validation */ 326 #define FI_DONTCACHE 0x40000000 /* don't cache the result */ 327 #define FI_IGNORE 0x80000000 328 329 #define fi_saddr fi_src.in4.s_addr 330 #define fi_daddr fi_dst.in4.s_addr 331 #define fi_srcnum fi_src.iplookupnum 332 #define fi_dstnum fi_dst.iplookupnum 333 #define fi_srctype fi_src.iplookuptype 334 #define fi_dsttype fi_dst.iplookuptype 335 #define fi_srcptr fi_src.iplookupptr 336 #define fi_dstptr fi_dst.iplookupptr 337 #define fi_srcfunc fi_src.iplookupfunc 338 #define fi_dstfunc fi_dst.iplookupfunc 339 340 341 /* 342 * These are both used by the state and NAT code to indicate that one port or 343 * the other should be treated as a wildcard. 344 * NOTE: When updating, check bit masks in ip_state.h and update there too. 345 */ 346 #define SI_W_SPORT 0x00000100 347 #define SI_W_DPORT 0x00000200 348 #define SI_WILDP (SI_W_SPORT|SI_W_DPORT) 349 #define SI_W_SADDR 0x00000400 350 #define SI_W_DADDR 0x00000800 351 #define SI_WILDA (SI_W_SADDR|SI_W_DADDR) 352 #define SI_NEWFR 0x00001000 353 #define SI_CLONE 0x00002000 354 #define SI_CLONED 0x00004000 355 356 357 358 359 struct fr_info { 360 void *fin_ifp; /* interface packet is `on' */ 361 fr_ip_t fin_fi; /* IP Packet summary */ 362 union { 363 u_short fid_16[2]; /* TCP/UDP ports, ICMP code/type */ 364 u_32_t fid_32; 365 } fin_dat; 366 int fin_out; /* in or out ? 1 == out, 0 == in */ 367 int fin_rev; /* state only: 1 = reverse */ 368 u_short fin_hlen; /* length of IP header in bytes */ 369 u_char fin_tcpf; /* TCP header flags (SYN, ACK, etc) */ 370 u_char fin_icode; /* ICMP error to return */ 371 u_32_t fin_rule; /* rule # last matched */ 372 char fin_group[FR_GROUPLEN]; /* group number, -1 for none */ 373 struct frentry *fin_fr; /* last matching rule */ 374 void *fin_dp; /* start of data past IP header */ 375 int fin_dlen; /* length of data portion of packet */ 376 int fin_plen; 377 int fin_ipoff; /* # bytes from buffer start to hdr */ 378 u_32_t fin_id; /* IP packet id field */ 379 u_short fin_off; 380 int fin_depth; /* Group nesting depth */ 381 int fin_error; /* Error code to return */ 382 u_int fin_pktnum; 383 void *fin_nattag; 384 union { 385 ip_t *fip_ip; 386 #ifdef USE_INET6 387 ip6_t *fip_ip6; 388 #endif 389 } fin_ipu; 390 mb_t **fin_mp; /* pointer to pointer to mbuf */ 391 mb_t *fin_m; /* pointer to mbuf */ 392 #ifdef MENTAT 393 mb_t *fin_qfm; /* pointer to mblk where pkt starts */ 394 void *fin_qpi; 395 ipf_stack_t *fin_ifs; 396 #endif 397 #ifdef __sgi 398 void *fin_hbuf; 399 #endif 400 }; 401 402 #define fin_ip fin_ipu.fip_ip 403 #define fin_ip6 fin_ipu.fip_ip6 404 #define fin_v fin_fi.fi_v 405 #define fin_p fin_fi.fi_p 406 #define fin_flx fin_fi.fi_flx 407 #define fin_optmsk fin_fi.fi_optmsk 408 #define fin_secmsk fin_fi.fi_secmsk 409 #define fin_auth fin_fi.fi_auth 410 #define fin_src fin_fi.fi_src.in4 411 #define fin_saddr fin_fi.fi_saddr 412 #define fin_dst fin_fi.fi_dst.in4 413 #define fin_daddr fin_fi.fi_daddr 414 #define fin_data fin_dat.fid_16 415 #define fin_sport fin_dat.fid_16[0] 416 #define fin_dport fin_dat.fid_16[1] 417 #define fin_ports fin_dat.fid_32 418 419 #ifdef USE_INET6 420 # define fin_src6 fin_fi.fi_src 421 # define fin_dst6 fin_fi.fi_dst 422 # define fin_dstip6 fin_fi.fi_dst.in6 423 # define fin_srcip6 fin_fi.fi_src.in6 424 #endif 425 426 #define IPF_IN 0 427 #define IPF_OUT 1 428 429 typedef struct frentry *(*ipfunc_t) __P((fr_info_t *, u_32_t *)); 430 typedef int (*ipfuncinit_t) __P((struct frentry *, 431 ipf_stack_t *)); 432 433 typedef struct ipfunc_resolve { 434 char ipfu_name[32]; 435 ipfunc_t ipfu_addr; 436 ipfuncinit_t ipfu_init; 437 } ipfunc_resolve_t; 438 439 /* 440 * Size for compares on fr_info structures 441 */ 442 #define FI_CSIZE offsetof(fr_info_t, fin_icode) 443 #define FI_LCSIZE offsetof(fr_info_t, fin_dp) 444 445 /* 446 * Size for copying cache fr_info structure 447 */ 448 #define FI_COPYSIZE offsetof(fr_info_t, fin_dp) 449 450 /* 451 * Structure for holding IPFilter's tag information 452 */ 453 #define IPFTAG_LEN 16 454 typedef struct { 455 union { 456 u_32_t iptu_num[4]; 457 char iptu_tag[IPFTAG_LEN]; 458 } ipt_un; 459 int ipt_not; 460 } ipftag_t; 461 462 #define ipt_tag ipt_un.iptu_tag 463 #define ipt_num ipt_un.iptu_num 464 465 466 /* 467 * This structure is used to hold information about the next hop for where 468 * to forward a packet. 469 */ 470 typedef struct frdest { 471 void *fd_ifp; 472 i6addr_t fd_ip6; 473 char fd_ifname[LIFNAMSIZ]; 474 } frdest_t; 475 476 #define fd_ip fd_ip6.in4 477 478 479 /* 480 * This structure holds information about a port comparison. 481 */ 482 typedef struct frpcmp { 483 int frp_cmp; /* data for port comparisons */ 484 u_short frp_port; /* top port for <> and >< */ 485 u_short frp_top; /* top port for <> and >< */ 486 } frpcmp_t; 487 488 #define FR_NONE 0 489 #define FR_EQUAL 1 490 #define FR_NEQUAL 2 491 #define FR_LESST 3 492 #define FR_GREATERT 4 493 #define FR_LESSTE 5 494 #define FR_GREATERTE 6 495 #define FR_OUTRANGE 7 496 #define FR_INRANGE 8 497 #define FR_INCRANGE 9 498 499 /* 500 * Structure containing all the relevant TCP things that can be checked in 501 * a filter rule. 502 */ 503 typedef struct frtuc { 504 u_char ftu_tcpfm; /* tcp flags mask */ 505 u_char ftu_tcpf; /* tcp flags */ 506 frpcmp_t ftu_src; 507 frpcmp_t ftu_dst; 508 } frtuc_t; 509 510 #define ftu_scmp ftu_src.frp_cmp 511 #define ftu_dcmp ftu_dst.frp_cmp 512 #define ftu_sport ftu_src.frp_port 513 #define ftu_dport ftu_dst.frp_port 514 #define ftu_stop ftu_src.frp_top 515 #define ftu_dtop ftu_dst.frp_top 516 517 #define FR_TCPFMAX 0x3f 518 519 /* 520 * This structure makes up what is considered to be the IPFilter specific 521 * matching components of a filter rule, as opposed to the data structures 522 * used to define the result which are in frentry_t and not here. 523 */ 524 typedef struct fripf { 525 fr_ip_t fri_ip; 526 fr_ip_t fri_mip; /* mask structure */ 527 528 u_short fri_icmpm; /* data for ICMP packets (mask) */ 529 u_short fri_icmp; 530 531 frtuc_t fri_tuc; 532 int fri_satype; /* addres type */ 533 int fri_datype; /* addres type */ 534 int fri_sifpidx; /* doing dynamic addressing */ 535 int fri_difpidx; /* index into fr_ifps[] to use when */ 536 } fripf_t; 537 538 #define fri_dstnum fri_ip.fi_dstnum 539 #define fri_srcnum fri_mip.fi_srcnum 540 #define fri_dstptr fri_ip.fi_dstptr 541 #define fri_srcptr fri_mip.fi_srcptr 542 543 #define FRI_NORMAL 0 /* Normal address */ 544 #define FRI_DYNAMIC 1 /* dynamic address */ 545 #define FRI_LOOKUP 2 /* address is a pool # */ 546 #define FRI_RANGE 3 /* address/mask is a range */ 547 #define FRI_NETWORK 4 /* network address from if */ 548 #define FRI_BROADCAST 5 /* broadcast address from if */ 549 #define FRI_PEERADDR 6 /* Peer address for P-to-P */ 550 #define FRI_NETMASKED 7 /* network address with netmask from if */ 551 552 553 typedef struct frentry * (* frentfunc_t) __P((fr_info_t *)); 554 555 typedef struct frentry { 556 ipfmutex_t fr_lock; 557 struct frentry *fr_next; 558 struct frentry **fr_grp; 559 struct ipscan *fr_isc; 560 void *fr_ifas[4]; 561 void *fr_ptr; /* for use with fr_arg */ 562 char *fr_comment; /* text comment for rule */ 563 int fr_ref; /* reference count - for grouping */ 564 int fr_statecnt; /* state count - for limit rules */ 565 /* 566 * These are only incremented when a packet matches this rule and 567 * it is the last match 568 */ 569 U_QUAD_T fr_hits; 570 U_QUAD_T fr_bytes; 571 572 /* 573 * For PPS rate limiting 574 */ 575 struct timeval fr_lastpkt; 576 int fr_curpps; 577 578 union { 579 void *fru_data; 580 caddr_t fru_caddr; 581 fripf_t *fru_ipf; 582 frentfunc_t fru_func; 583 } fr_dun; 584 585 /* 586 * Fields after this may not change whilst in the kernel. 587 */ 588 ipfunc_t fr_func; /* call this function */ 589 int fr_dsize; 590 int fr_pps; 591 int fr_statemax; /* max reference count */ 592 int fr_flineno; /* line number from conf file */ 593 u_32_t fr_type; 594 u_32_t fr_flags; /* per-rule flags && options (see below) */ 595 u_32_t fr_logtag; /* user defined log tag # */ 596 u_32_t fr_collect; /* collection number */ 597 u_int fr_arg; /* misc. numeric arg for rule */ 598 u_int fr_loglevel; /* syslog log facility + priority */ 599 u_int fr_age[2]; /* non-TCP timeouts */ 600 u_char fr_v; 601 u_char fr_icode; /* return ICMP code */ 602 char fr_group[FR_GROUPLEN]; /* group to which this rule belongs */ 603 char fr_grhead[FR_GROUPLEN]; /* group # which this rule starts */ 604 ipftag_t fr_nattag; 605 char fr_ifnames[4][LIFNAMSIZ]; 606 char fr_isctag[16]; 607 frdest_t fr_tifs[2]; /* "to"/"reply-to" interface */ 608 frdest_t fr_dif; /* duplicate packet interface */ 609 /* 610 * This must be last and will change after loaded into the kernel. 611 */ 612 u_int fr_cksum; /* checksum on filter rules for performance */ 613 } frentry_t; 614 615 #define fr_caddr fr_dun.fru_caddr 616 #define fr_data fr_dun.fru_data 617 #define fr_dfunc fr_dun.fru_func 618 #define fr_ipf fr_dun.fru_ipf 619 #define fr_ip fr_ipf->fri_ip 620 #define fr_mip fr_ipf->fri_mip 621 #define fr_icmpm fr_ipf->fri_icmpm 622 #define fr_icmp fr_ipf->fri_icmp 623 #define fr_tuc fr_ipf->fri_tuc 624 #define fr_satype fr_ipf->fri_satype 625 #define fr_datype fr_ipf->fri_datype 626 #define fr_sifpidx fr_ipf->fri_sifpidx 627 #define fr_difpidx fr_ipf->fri_difpidx 628 #define fr_proto fr_ip.fi_p 629 #define fr_mproto fr_mip.fi_p 630 #define fr_ttl fr_ip.fi_ttl 631 #define fr_mttl fr_mip.fi_ttl 632 #define fr_tos fr_ip.fi_tos 633 #define fr_mtos fr_mip.fi_tos 634 #define fr_tcpfm fr_tuc.ftu_tcpfm 635 #define fr_tcpf fr_tuc.ftu_tcpf 636 #define fr_scmp fr_tuc.ftu_scmp 637 #define fr_dcmp fr_tuc.ftu_dcmp 638 #define fr_dport fr_tuc.ftu_dport 639 #define fr_sport fr_tuc.ftu_sport 640 #define fr_stop fr_tuc.ftu_stop 641 #define fr_dtop fr_tuc.ftu_dtop 642 #define fr_dst fr_ip.fi_dst.in4 643 #define fr_daddr fr_ip.fi_dst.in4.s_addr 644 #define fr_src fr_ip.fi_src.in4 645 #define fr_saddr fr_ip.fi_src.in4.s_addr 646 #define fr_dmsk fr_mip.fi_dst.in4 647 #define fr_dmask fr_mip.fi_dst.in4.s_addr 648 #define fr_smsk fr_mip.fi_src.in4 649 #define fr_smask fr_mip.fi_src.in4.s_addr 650 #define fr_dstnum fr_ip.fi_dstnum 651 #define fr_srcnum fr_ip.fi_srcnum 652 #define fr_dsttype fr_ip.fi_dsttype 653 #define fr_srctype fr_ip.fi_srctype 654 #define fr_dstptr fr_mip.fi_dstptr 655 #define fr_srcptr fr_mip.fi_srcptr 656 #define fr_dstfunc fr_mip.fi_dstfunc 657 #define fr_srcfunc fr_mip.fi_srcfunc 658 #define fr_optbits fr_ip.fi_optmsk 659 #define fr_optmask fr_mip.fi_optmsk 660 #define fr_secbits fr_ip.fi_secmsk 661 #define fr_secmask fr_mip.fi_secmsk 662 #define fr_authbits fr_ip.fi_auth 663 #define fr_authmask fr_mip.fi_auth 664 #define fr_flx fr_ip.fi_flx 665 #define fr_mflx fr_mip.fi_flx 666 #define fr_ifname fr_ifnames[0] 667 #define fr_oifname fr_ifnames[2] 668 #define fr_ifa fr_ifas[0] 669 #define fr_oifa fr_ifas[2] 670 #define fr_tif fr_tifs[0] 671 #define fr_rif fr_tifs[1] 672 673 #define FR_NOLOGTAG 0 674 675 #define FR_CMPSIZ (sizeof(struct frentry) - \ 676 offsetof(struct frentry, fr_func)) 677 678 /* 679 * fr_type 680 */ 681 #define FR_T_NONE 0 682 #define FR_T_IPF 1 /* IPF structures */ 683 #define FR_T_BPFOPC 2 /* BPF opcode */ 684 #define FR_T_CALLFUNC 3 /* callout to function in fr_func only */ 685 #define FR_T_COMPIPF 4 /* compiled C code */ 686 #define FR_T_BUILTIN 0x80000000 /* rule is in kernel space */ 687 688 /* 689 * fr_flags 690 */ 691 #define FR_CALL 0x00000 /* call rule */ 692 #define FR_BLOCK 0x00001 /* do not allow packet to pass */ 693 #define FR_PASS 0x00002 /* allow packet to pass */ 694 #define FR_AUTH 0x00003 /* use authentication */ 695 #define FR_PREAUTH 0x00004 /* require preauthentication */ 696 #define FR_ACCOUNT 0x00005 /* Accounting rule */ 697 #define FR_SKIP 0x00006 /* skip rule */ 698 #define FR_DIVERT 0x00007 /* divert rule */ 699 #define FR_CMDMASK 0x0000f 700 #define FR_LOG 0x00010 /* Log */ 701 #define FR_LOGB 0x00011 /* Log-fail */ 702 #define FR_LOGP 0x00012 /* Log-pass */ 703 #define FR_LOGMASK (FR_LOG|FR_CMDMASK) 704 #define FR_CALLNOW 0x00020 /* call another function (fr_func) if matches */ 705 #define FR_NOTSRCIP 0x00040 706 #define FR_NOTDSTIP 0x00080 707 #define FR_QUICK 0x00100 /* match & stop processing list */ 708 #define FR_KEEPFRAG 0x00200 /* keep fragment information */ 709 #define FR_KEEPSTATE 0x00400 /* keep `connection' state information */ 710 #define FR_FASTROUTE 0x00800 /* bypass normal routing */ 711 #define FR_RETRST 0x01000 /* Return TCP RST packet - reset connection */ 712 #define FR_RETICMP 0x02000 /* Return ICMP unreachable packet */ 713 #define FR_FAKEICMP 0x03000 /* Return ICMP unreachable with fake source */ 714 #define FR_OUTQUE 0x04000 /* outgoing packets */ 715 #define FR_INQUE 0x08000 /* ingoing packets */ 716 #define FR_LOGBODY 0x10000 /* Log the body */ 717 #define FR_LOGFIRST 0x20000 /* Log the first byte if state held */ 718 #define FR_LOGORBLOCK 0x40000 /* block the packet if it can't be logged */ 719 #define FR_DUP 0x80000 /* duplicate packet */ 720 #define FR_FRSTRICT 0x100000 /* strict frag. cache */ 721 #define FR_STSTRICT 0x200000 /* strict keep state */ 722 #define FR_NEWISN 0x400000 /* new ISN for outgoing TCP */ 723 #define FR_NOICMPERR 0x800000 /* do not match ICMP errors in state */ 724 #define FR_STATESYNC 0x1000000 /* synchronize state to slave */ 725 #define FR_NOMATCH 0x8000000 /* no match occured */ 726 /* 0x10000000 FF_LOGPASS */ 727 /* 0x20000000 FF_LOGBLOCK */ 728 /* 0x40000000 FF_LOGNOMATCH */ 729 /* 0x80000000 FF_BLOCKNONIP */ 730 #define FR_COPIED 0x40000000 /* copied from user space */ 731 #define FR_INACTIVE 0x80000000 /* only used when flush'ing rules */ 732 733 #define FR_RETMASK (FR_RETICMP|FR_RETRST|FR_FAKEICMP) 734 #define FR_ISBLOCK(x) (((x) & FR_CMDMASK) == FR_BLOCK) 735 #define FR_ISPASS(x) (((x) & FR_CMDMASK) == FR_PASS) 736 #define FR_ISAUTH(x) (((x) & FR_CMDMASK) == FR_AUTH) 737 #define FR_ISPREAUTH(x) (((x) & FR_CMDMASK) == FR_PREAUTH) 738 #define FR_ISACCOUNT(x) (((x) & FR_CMDMASK) == FR_ACCOUNT) 739 #define FR_ISSKIP(x) (((x) & FR_CMDMASK) == FR_SKIP) 740 #define FR_ISNOMATCH(x) ((x) & FR_NOMATCH) 741 #define FR_INOUT (FR_INQUE|FR_OUTQUE) 742 743 /* 744 * recognized flags for SIOCGETFF and SIOCSETFF, and get put in fr_flags 745 */ 746 #define FF_LOGPASS 0x10000000 747 #define FF_LOGBLOCK 0x20000000 748 #define FF_LOGNOMATCH 0x40000000 749 #define FF_LOGGING (FF_LOGPASS|FF_LOGBLOCK|FF_LOGNOMATCH) 750 #define FF_BLOCKNONIP 0x80000000 /* Solaris2 Only */ 751 752 753 /* 754 * Structure that passes information on what/how to flush to the kernel. 755 */ 756 typedef struct ipfflush { 757 int ipflu_how; 758 int ipflu_arg; 759 } ipfflush_t; 760 761 762 /* 763 * 764 */ 765 typedef struct ipfgetctl { 766 u_int ipfg_min; /* min value */ 767 u_int ipfg_current; /* current value */ 768 u_int ipfg_max; /* max value */ 769 u_int ipfg_default; /* default value */ 770 u_int ipfg_steps; /* value increments */ 771 char ipfg_name[40]; /* tag name for this control */ 772 } ipfgetctl_t; 773 774 typedef struct ipfsetctl { 775 int ipfs_which; /* 0 = min 1 = current 2 = max 3 = default */ 776 u_int ipfs_value; /* min value */ 777 char ipfs_name[40]; /* tag name for this control */ 778 } ipfsetctl_t; 779 780 781 /* 782 * Some of the statistics below are in their own counters, but most are kept 783 * in this single structure so that they can all easily be collected and 784 * copied back as required. 785 * 786 * NOTE: when changing, keep in sync with kstats (below). 787 */ 788 typedef struct filterstats { 789 u_long fr_pass; /* packets allowed */ 790 u_long fr_block; /* packets denied */ 791 u_long fr_nom; /* packets which don't match any rule */ 792 u_long fr_short; /* packets which are short */ 793 u_long fr_ppkl; /* packets allowed and logged */ 794 u_long fr_bpkl; /* packets denied and logged */ 795 u_long fr_npkl; /* packets unmatched and logged */ 796 u_long fr_pkl; /* packets logged */ 797 u_long fr_skip; /* packets to be logged but buffer full */ 798 u_long fr_ret; /* packets for which a return is sent */ 799 u_long fr_acct; /* packets for which counting was performed */ 800 u_long fr_bnfr; /* bad attempts to allocate fragment state */ 801 u_long fr_nfr; /* new fragment state kept */ 802 u_long fr_cfr; /* add new fragment state but complete pkt */ 803 u_long fr_bads; /* bad attempts to allocate packet state */ 804 u_long fr_ads; /* new packet state kept */ 805 u_long fr_chit; /* cached hit */ 806 u_long fr_tcpbad; /* TCP checksum check failures */ 807 u_long fr_pull[2]; /* good and bad pullup attempts */ 808 u_long fr_badsrc; /* source received doesn't match route */ 809 u_long fr_badttl; /* TTL in packet doesn't reach minimum */ 810 u_long fr_bad; /* bad IP packets to the filter */ 811 u_long fr_ipv6; /* IPv6 packets in/out */ 812 u_long fr_ppshit; /* dropped because of pps ceiling */ 813 u_long fr_ipud; /* IP id update failures */ 814 } filterstats_t; 815 816 /* 817 * kstat "copy" of the above - keep in sync! 818 * also keep in sync with initialisation code in solaris.c, ipf_kstat_init(). 819 */ 820 typedef struct filter_kstats { 821 kstat_named_t fks_pass; /* see above for comments */ 822 kstat_named_t fks_block; 823 kstat_named_t fks_nom; 824 kstat_named_t fks_short; 825 kstat_named_t fks_ppkl; 826 kstat_named_t fks_bpkl; 827 kstat_named_t fks_npkl; 828 kstat_named_t fks_pkl; 829 kstat_named_t fks_skip; 830 kstat_named_t fks_ret; 831 kstat_named_t fks_acct; 832 kstat_named_t fks_bnfr; 833 kstat_named_t fks_nfr; 834 kstat_named_t fks_cfr; 835 kstat_named_t fks_bads; 836 kstat_named_t fks_ads; 837 kstat_named_t fks_chit; 838 kstat_named_t fks_tcpbad; 839 kstat_named_t fks_pull[2]; 840 kstat_named_t fks_badsrc; 841 kstat_named_t fks_badttl; 842 kstat_named_t fks_bad; 843 kstat_named_t fks_ipv6; 844 kstat_named_t fks_ppshit; 845 kstat_named_t fks_ipud; 846 } filter_kstats_t; 847 848 /* 849 * Log structure. Each packet header logged is prepended by one of these. 850 * Following this in the log records read from the device will be an ipflog 851 * structure which is then followed by any packet data. 852 */ 853 typedef struct iplog { 854 u_32_t ipl_magic; 855 u_int ipl_count; 856 struct timeval ipl_time; 857 size_t ipl_dsize; 858 struct iplog *ipl_next; 859 } iplog_t; 860 861 #define ipl_sec ipl_time.tv_sec 862 #define ipl_usec ipl_time.tv_usec 863 864 #define IPL_MAGIC 0x49504c4d /* 'IPLM' */ 865 #define IPL_MAGIC_NAT 0x49504c4e /* 'IPLN' */ 866 #define IPL_MAGIC_STATE 0x49504c53 /* 'IPLS' */ 867 #define IPLOG_SIZE sizeof(iplog_t) 868 869 typedef struct ipflog { 870 #if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \ 871 (defined(OpenBSD) && (OpenBSD >= 199603)) 872 #else 873 u_int fl_unit; 874 #endif 875 u_32_t fl_rule; 876 u_32_t fl_flags; 877 u_32_t fl_lflags; 878 u_32_t fl_logtag; 879 ipftag_t fl_nattag; 880 u_short fl_plen; /* extra data after hlen */ 881 u_short fl_loglevel; /* syslog log level */ 882 char fl_group[FR_GROUPLEN]; 883 u_char fl_hlen; /* length of IP headers saved */ 884 u_char fl_dir; 885 u_char fl_xxx[2]; /* pad */ 886 char fl_ifname[LIFNAMSIZ]; 887 } ipflog_t; 888 889 #ifndef IPF_LOGGING 890 # define IPF_LOGGING 0 891 #endif 892 #ifndef IPF_DEFAULT_PASS 893 # define IPF_DEFAULT_PASS FR_PASS 894 #endif 895 896 #define DEFAULT_IPFLOGSIZE 8192 897 #ifndef IPFILTER_LOGSIZE 898 # define IPFILTER_LOGSIZE DEFAULT_IPFLOGSIZE 899 #else 900 # if IPFILTER_LOGSIZE < DEFAULT_IPFLOGSIZE 901 # error IPFILTER_LOGSIZE too small. Must be >= DEFAULT_IPFLOGSIZE 902 # endif 903 #endif 904 905 #define IPF_OPTCOPY 0x07ff00 /* bit mask of copied options */ 906 907 /* 908 * Device filenames for reading log information. Use ipf on Solaris2 because 909 * ipl is already a name used by something else. 910 */ 911 #ifndef IPL_NAME 912 # ifdef SOLARIS 913 # define IPL_NAME "/dev/ipf" 914 # else 915 # define IPL_NAME "/dev/ipl" 916 # endif 917 #endif 918 /* 919 * Pathnames for various IP Filter control devices. Used by LKM 920 * and userland, so defined here. 921 */ 922 #define IPNAT_NAME "/dev/ipnat" 923 #define IPSTATE_NAME "/dev/ipstate" 924 #define IPAUTH_NAME "/dev/ipauth" 925 #define IPSYNC_NAME "/dev/ipsync" 926 #define IPSCAN_NAME "/dev/ipscan" 927 #define IPLOOKUP_NAME "/dev/iplookup" 928 929 #define IPL_LOGIPF 0 /* Minor device #'s for accessing logs */ 930 #define IPL_LOGNAT 1 931 #define IPL_LOGSTATE 2 932 #define IPL_LOGAUTH 3 933 #define IPL_LOGSYNC 4 934 #define IPL_LOGSCAN 5 935 #define IPL_LOGLOOKUP 6 936 #define IPL_LOGCOUNT 7 937 #define IPL_LOGMAX 7 938 #define IPL_LOGSIZE (IPL_LOGMAX + 1) 939 #define IPL_LOGALL -1 940 #define IPL_LOGNONE -2 941 942 /* 943 * For SIOCGETFS 944 */ 945 typedef struct friostat { 946 struct filterstats f_st[2]; 947 struct frentry *f_ipf[2][2]; 948 struct frentry *f_acct[2][2]; 949 struct frentry *f_ipf6[2][2]; 950 struct frentry *f_acct6[2][2]; 951 struct frentry *f_auth; 952 struct frgroup *f_groups[IPL_LOGSIZE][2]; 953 u_long f_froute[2]; 954 u_long f_ticks; 955 int f_locks[IPL_LOGMAX]; 956 size_t f_kmutex_sz; 957 size_t f_krwlock_sz; 958 int f_defpass; /* default pass - from fr_pass */ 959 int f_active; /* 1 or 0 - active rule set */ 960 int f_running; /* 1 if running, else 0 */ 961 int f_logging; /* 1 if enabled, else 0 */ 962 int f_features; 963 char f_version[32]; /* version string */ 964 } friostat_t; 965 966 #define f_fin f_ipf[0] 967 #define f_fin6 f_ipf6[0] 968 #define f_fout f_ipf[1] 969 #define f_fout6 f_ipf6[1] 970 #define f_acctin f_acct[0] 971 #define f_acctin6 f_acct6[0] 972 #define f_acctout f_acct[1] 973 #define f_acctout6 f_acct6[1] 974 975 #define IPF_FEAT_LKM 0x001 976 #define IPF_FEAT_LOG 0x002 977 #define IPF_FEAT_LOOKUP 0x004 978 #define IPF_FEAT_BPF 0x008 979 #define IPF_FEAT_COMPILED 0x010 980 #define IPF_FEAT_CKSUM 0x020 981 #define IPF_FEAT_SYNC 0x040 982 #define IPF_FEAT_SCAN 0x080 983 #define IPF_FEAT_IPV6 0x100 984 985 typedef struct optlist { 986 u_short ol_val; 987 int ol_bit; 988 } optlist_t; 989 990 991 /* 992 * Group list structure. 993 */ 994 typedef struct frgroup { 995 struct frgroup *fg_next; 996 struct frentry *fg_head; 997 struct frentry *fg_start; 998 u_32_t fg_flags; 999 int fg_ref; 1000 char fg_name[FR_GROUPLEN]; 1001 } frgroup_t; 1002 1003 #define FG_NAME(g) (*(g)->fg_name == '\0' ? "" : (g)->fg_name) 1004 1005 1006 /* 1007 * Used by state and NAT tables 1008 */ 1009 typedef struct icmpinfo { 1010 u_short ici_id; 1011 u_short ici_seq; 1012 u_char ici_type; 1013 } icmpinfo_t; 1014 1015 typedef struct udpinfo { 1016 u_short us_sport; 1017 u_short us_dport; 1018 } udpinfo_t; 1019 1020 1021 typedef struct tcpdata { 1022 u_32_t td_end; 1023 u_32_t td_maxend; 1024 u_32_t td_maxwin; 1025 u_32_t td_winscale; 1026 u_32_t td_maxseg; 1027 int td_winflags; 1028 } tcpdata_t; 1029 1030 #define TCP_WSCALE_MAX 14 1031 1032 #define TCP_WSCALE_SEEN 0x00000001 1033 #define TCP_WSCALE_FIRST 0x00000002 1034 #define TCP_SACK_PERMIT 0x00000004 1035 1036 1037 typedef struct tcpinfo { 1038 u_short ts_sport; 1039 u_short ts_dport; 1040 tcpdata_t ts_data[2]; 1041 } tcpinfo_t; 1042 1043 1044 /* 1045 * Structures to define a GRE header as seen in a packet. 1046 */ 1047 struct grebits { 1048 u_32_t grb_C:1; 1049 u_32_t grb_R:1; 1050 u_32_t grb_K:1; 1051 u_32_t grb_S:1; 1052 u_32_t grb_s:1; 1053 u_32_t grb_recur:1; 1054 u_32_t grb_A:1; 1055 u_32_t grb_flags:3; 1056 u_32_t grb_ver:3; 1057 u_short grb_ptype; 1058 }; 1059 1060 typedef struct grehdr { 1061 union { 1062 struct grebits gru_bits; 1063 u_short gru_flags; 1064 } gr_un; 1065 u_short gr_len; 1066 u_short gr_call; 1067 } grehdr_t; 1068 1069 #define gr_flags gr_un.gru_flags 1070 #define gr_bits gr_un.gru_bits 1071 #define gr_ptype gr_bits.grb_ptype 1072 #define gr_C gr_bits.grb_C 1073 #define gr_R gr_bits.grb_R 1074 #define gr_K gr_bits.grb_K 1075 #define gr_S gr_bits.grb_S 1076 #define gr_s gr_bits.grb_s 1077 #define gr_recur gr_bits.grb_recur 1078 #define gr_A gr_bits.grb_A 1079 #define gr_ver gr_bits.grb_ver 1080 1081 /* 1082 * GRE information tracked by "keep state" 1083 */ 1084 typedef struct greinfo { 1085 u_short gs_call[2]; 1086 u_short gs_flags; 1087 u_short gs_ptype; 1088 } greinfo_t; 1089 1090 #define GRE_REV(x) ((ntohs(x) >> 13) & 7) 1091 1092 1093 /* 1094 * Format of an Authentication header 1095 */ 1096 typedef struct authhdr { 1097 u_char ah_next; 1098 u_char ah_plen; 1099 u_short ah_reserved; 1100 u_32_t ah_spi; 1101 u_32_t ah_seq; 1102 /* Following the sequence number field is 0 or more bytes of */ 1103 /* authentication data, as specified by ah_plen - RFC 2402. */ 1104 } authhdr_t; 1105 1106 1107 /* 1108 * Timeout tail queue list member 1109 */ 1110 typedef struct ipftqent { 1111 struct ipftqent **tqe_pnext; 1112 struct ipftqent *tqe_next; 1113 struct ipftq *tqe_ifq; 1114 void *tqe_parent; /* pointer back to NAT/state struct */ 1115 u_long tqe_die; /* when this entriy is to die */ 1116 u_long tqe_touched; 1117 int tqe_flags; 1118 int tqe_state[2]; /* current state of this entry */ 1119 } ipftqent_t; 1120 1121 #define TQE_RULEBASED 0x00000001 1122 1123 1124 /* 1125 * Timeout tail queue head for IPFilter 1126 */ 1127 typedef struct ipftq { 1128 ipfmutex_t ifq_lock; 1129 u_int ifq_ttl; 1130 ipftqent_t *ifq_head; 1131 ipftqent_t **ifq_tail; 1132 struct ipftq *ifq_next; 1133 struct ipftq **ifq_pnext; 1134 int ifq_ref; 1135 u_int ifq_flags; 1136 } ipftq_t; 1137 1138 #define IFQF_USER 0x01 /* User defined aging */ 1139 #define IFQF_DELETE 0x02 /* Marked for deletion */ 1140 #define IFQF_PROXY 0x04 /* Timeout queue in use by a proxy */ 1141 1142 #define IPF_HZ_MULT 1 1143 #define IPF_HZ_DIVIDE 2 /* How many times a second ipfilter */ 1144 /* checks its timeout queues. */ 1145 #define IPF_TTLVAL(x) (((x) / IPF_HZ_MULT) * IPF_HZ_DIVIDE) 1146 1147 /* 1148 * Structure to define address for pool lookups. 1149 */ 1150 typedef struct { 1151 u_char adf_len; 1152 sa_family_t adf_family; 1153 i6addr_t adf_addr; 1154 } addrfamily_t; 1155 1156 1157 /* 1158 * Object structure description. For passing through in ioctls. 1159 */ 1160 typedef struct ipfobj { 1161 u_32_t ipfo_rev; /* IPFilter version number */ 1162 u_32_t ipfo_size; /* size of object at ipfo_ptr */ 1163 void *ipfo_ptr; /* pointer to object */ 1164 int ipfo_type; /* type of object being pointed to */ 1165 int ipfo_offset; /* bytes from ipfo_ptr where to start */ 1166 u_char ipfo_xxxpad[32]; /* reserved for future use */ 1167 } ipfobj_t; 1168 1169 /* 1170 * ioctl struct for setting what zone further ioctls will act on. ipfz_gz is a 1171 * boolean: set it to 1 to operate on the GZ-controlled stack. 1172 */ 1173 typedef struct ipfzoneobj { 1174 u_32_t ipfz_gz; /* GZ stack boolean */ 1175 char ipfz_zonename[ZONENAME_MAX]; /* zone to act on */ 1176 } ipfzoneobj_t; 1177 1178 #if defined(_KERNEL) 1179 /* Set ipfs_zoneid to this if no zone has been set: */ 1180 #define IPFS_ZONE_UNSET -2 1181 1182 typedef struct ipf_devstate { 1183 zoneid_t ipfs_zoneid; 1184 minor_t ipfs_minor; 1185 boolean_t ipfs_gz; 1186 } ipf_devstate_t; 1187 #endif 1188 1189 #define IPFOBJ_FRENTRY 0 /* struct frentry */ 1190 #define IPFOBJ_IPFSTAT 1 /* struct friostat */ 1191 #define IPFOBJ_IPFINFO 2 /* struct fr_info */ 1192 #define IPFOBJ_AUTHSTAT 3 /* struct fr_authstat */ 1193 #define IPFOBJ_FRAGSTAT 4 /* struct ipfrstat */ 1194 #define IPFOBJ_IPNAT 5 /* struct ipnat */ 1195 #define IPFOBJ_NATSTAT 6 /* struct natstat */ 1196 #define IPFOBJ_STATESAVE 7 /* struct ipstate_save */ 1197 #define IPFOBJ_NATSAVE 8 /* struct nat_save */ 1198 #define IPFOBJ_NATLOOKUP 9 /* struct natlookup */ 1199 #define IPFOBJ_IPSTATE 10 /* struct ipstate */ 1200 #define IPFOBJ_STATESTAT 11 /* struct ips_stat */ 1201 #define IPFOBJ_FRAUTH 12 /* struct frauth */ 1202 #define IPFOBJ_TUNEABLE 13 /* struct ipftune */ 1203 #define IPFOBJ_NAT 14 /* struct nat */ 1204 #define IPFOBJ_IPFITER 15 /* struct ipfruleiter */ 1205 #define IPFOBJ_GENITER 16 /* struct ipfgeniter */ 1206 #define IPFOBJ_GTABLE 17 /* struct ipftable */ 1207 #define IPFOBJ_LOOKUPITER 18 /* struct ipflookupiter */ 1208 #define IPFOBJ_COUNT 19 /* How many #defines are above this? */ 1209 1210 1211 typedef union ipftunevalptr { 1212 void *ipftp_void; 1213 u_long *ipftp_long; 1214 u_int *ipftp_int; 1215 u_short *ipftp_short; 1216 u_char *ipftp_char; 1217 } ipftunevalptr_t; 1218 1219 typedef struct ipftuneable { 1220 ipftunevalptr_t ipft_una; 1221 char *ipft_name; 1222 u_long ipft_min; 1223 u_long ipft_max; 1224 int ipft_sz; 1225 int ipft_flags; 1226 struct ipftuneable *ipft_next; 1227 } ipftuneable_t; 1228 1229 #define ipft_addr ipft_una.ipftp_void 1230 #define ipft_plong ipft_una.ipftp_long 1231 #define ipft_pint ipft_una.ipftp_int 1232 #define ipft_pshort ipft_una.ipftp_short 1233 #define ipft_pchar ipft_una.ipftp_char 1234 1235 #define IPFT_RDONLY 1 /* read-only */ 1236 #define IPFT_WRDISABLED 2 /* write when disabled only */ 1237 1238 typedef union ipftuneval { 1239 u_long ipftu_long; 1240 u_int ipftu_int; 1241 u_short ipftu_short; 1242 u_char ipftu_char; 1243 } ipftuneval_t; 1244 1245 typedef struct ipftune { 1246 void *ipft_cookie; 1247 ipftuneval_t ipft_un; 1248 u_long ipft_min; 1249 u_long ipft_max; 1250 int ipft_sz; 1251 int ipft_flags; 1252 char ipft_name[80]; 1253 } ipftune_t; 1254 1255 #define ipft_vlong ipft_un.ipftu_long 1256 #define ipft_vint ipft_un.ipftu_int 1257 #define ipft_vshort ipft_un.ipftu_short 1258 #define ipft_vchar ipft_un.ipftu_char 1259 1260 /* 1261 * ipfruleiter is iterator structure used for filter rules. 1262 */ 1263 typedef struct ipfruleiter { 1264 int iri_ver; 1265 int iri_inout; 1266 char iri_group[FR_GROUPLEN]; 1267 int iri_active; 1268 int iri_nrules; 1269 frentry_t *iri_rule; 1270 } ipfruleiter_t; 1271 1272 /* Values for iri_inout */ 1273 #define F_IN 0 1274 #define F_OUT 1 1275 #define F_ACIN 2 1276 #define F_ACOUT 3 1277 1278 /* 1279 * ipfgeniter is generic iterator structure used for nat rules, 1280 * hostmap entries and nat table entries. 1281 */ 1282 typedef struct ipfgeniter { 1283 int igi_type; /* type of data we're looking at */ 1284 int igi_nitems; 1285 void *igi_data; 1286 } ipfgeniter_t; 1287 1288 #define IPFGENITER_IPF 0 1289 #define IPFGENITER_NAT 1 1290 #define IPFGENITER_IPNAT 2 1291 #define IPFGENITER_FRAG 3 1292 #define IPFGENITER_AUTH 4 1293 #define IPFGENITER_STATE 5 1294 #define IPFGENITER_NATFRAG 6 1295 #define IPFGENITER_HOSTMAP 7 1296 #define IPFGENITER_LOOKUP 8 1297 1298 typedef struct ipftable { 1299 int ita_type; 1300 void *ita_table; 1301 } ipftable_t; 1302 1303 typedef struct ipftoken { 1304 struct ipftoken *ipt_next; 1305 struct ipftoken **ipt_pnext; 1306 void *ipt_ctx; 1307 void *ipt_data; 1308 u_long ipt_die; 1309 int ipt_type; 1310 int ipt_uid; 1311 int ipt_subtype; 1312 int ipt_alive; 1313 } ipftoken_t; 1314 1315 1316 /* 1317 * sync commands 1318 */ 1319 #define IPFSYNC_RESYNC 0 1320 #define IPFSYNC_NEWIFP 1 1321 #define IPFSYNC_OLDIFP 2 1322 1323 1324 /* 1325 ** HPUX Port 1326 */ 1327 #ifdef __hpux 1328 /* HP-UX locking sequence deadlock detection module lock MAJOR ID */ 1329 # define IPF_SMAJ 0 /* temp assignment XXX, not critical */ 1330 #endif 1331 1332 #if !defined(CDEV_MAJOR) && defined (__FreeBSD_version) && \ 1333 (__FreeBSD_version >= 220000) 1334 # define CDEV_MAJOR 79 1335 #endif 1336 1337 /* 1338 * Post NetBSD 1.2 has the PFIL interface for packet filters. This turns 1339 * on those hooks. We don't need any special mods in non-IP Filter code 1340 * with this! 1341 */ 1342 #if (defined(NetBSD) && (NetBSD > 199609) && (NetBSD <= 1991011)) || \ 1343 (defined(NetBSD1_2) && NetBSD1_2 > 1) || \ 1344 (defined(__FreeBSD__) && (__FreeBSD_version >= 500043)) 1345 # if (NetBSD >= 199905) 1346 # define PFIL_HOOKS 1347 # endif 1348 # ifdef PFIL_HOOKS 1349 # define NETBSD_PF 1350 # endif 1351 #endif 1352 1353 #ifndef _KERNEL 1354 extern int fr_check __P((struct ip *, int, void *, int, mb_t **, ipf_stack_t *)); 1355 extern int (*fr_checkp) __P((ip_t *, int, void *, int, mb_t **, ipf_stack_t *)); 1356 extern int ipf_log __P((void)); 1357 extern struct ifnet *get_unit __P((char *, int, ipf_stack_t *)); 1358 extern char *get_ifname __P((struct ifnet *)); 1359 # if defined(__NetBSD__) || defined(__OpenBSD__) || \ 1360 (_BSDI_VERSION >= 199701) || (__FreeBSD_version >= 300000) 1361 extern int frrequest __P((int, u_long, caddr_t, int, int, ipf_stack_t *)); 1362 # else 1363 extern int iplioctl __P((int, ioctlcmd_t, caddr_t, int)); 1364 # endif 1365 extern int iplopen __P((dev_t, int)); 1366 extern int iplclose __P((dev_t, int)); 1367 extern void m_freem __P((mb_t *)); 1368 #else /* #ifndef _KERNEL */ 1369 extern phy_if_t get_unit __P((char *, int, ipf_stack_t *)); 1370 # if defined(__NetBSD__) && defined(PFIL_HOOKS) 1371 extern void ipfilterattach __P((int)); 1372 # endif 1373 extern int ipl_enable __P((void)); 1374 extern int ipl_disable __P((void)); 1375 # ifdef MENTAT 1376 extern int fr_check __P((struct ip *, int, void *, int, void *, 1377 mblk_t **, ipf_stack_t *)); 1378 # if SOLARIS 1379 # if SOLARIS2 >= 7 1380 extern int iplioctl __P((dev_t, int, intptr_t, int, cred_t *, int *)); 1381 # else 1382 extern int iplioctl __P((dev_t, int, int *, int, cred_t *, int *)); 1383 # endif 1384 # if SOLARIS2 >= 10 && defined(_KERNEL) 1385 extern int fr_make_rst __P((fr_info_t *)); 1386 extern int fr_make_icmp __P((fr_info_t *)); 1387 extern void fr_calc_chksum __P((fr_info_t *, mb_t *)); 1388 extern ipf_stack_t *ipf_find_stack(const zoneid_t, ipf_devstate_t *); 1389 # endif 1390 extern int iplopen __P((dev_t *, int, int, cred_t *)); 1391 extern int iplclose __P((dev_t, int, int, cred_t *)); 1392 extern int iplread __P((dev_t, uio_t *, cred_t *)); 1393 extern int iplwrite __P((dev_t, uio_t *, cred_t *)); 1394 # endif 1395 # ifdef __hpux 1396 extern int iplopen __P((dev_t, int, intptr_t, int)); 1397 extern int iplclose __P((dev_t, int, int)); 1398 extern int iplioctl __P((dev_t, int, caddr_t, int)); 1399 extern int iplread __P((dev_t, uio_t *)); 1400 extern int iplwrite __P((dev_t, uio_t *)); 1401 extern int iplselect __P((dev_t, int)); 1402 # endif 1403 extern int ipfsync __P((ipf_stack_t *)); 1404 extern int fr_qout __P((queue_t *, mblk_t *)); 1405 # else /* MENTAT */ 1406 extern int fr_check __P((struct ip *, int, void *, int, mb_t **, ipf_stack_t *)); 1407 extern int (*fr_checkp) __P((ip_t *, int, void *, int, mb_t **, ipf_stack_t *)); 1408 extern size_t mbufchainlen __P((mb_t *)); 1409 # ifdef __sgi 1410 # include <sys/cred.h> 1411 extern int iplioctl __P((dev_t, int, caddr_t, int, cred_t *, int *)); 1412 extern int iplopen __P((dev_t *, int, int, cred_t *)); 1413 extern int iplclose __P((dev_t, int, int, cred_t *)); 1414 extern int iplread __P((dev_t, uio_t *, cred_t *)); 1415 extern int iplwrite __P((dev_t, uio_t *, cred_t *)); 1416 extern int ipfsync __P((ipf_stack_t *)); 1417 extern int ipfilter_sgi_attach __P((void)); 1418 extern void ipfilter_sgi_detach __P((void)); 1419 extern void ipfilter_sgi_intfsync __P((void)); 1420 # else 1421 # ifdef IPFILTER_LKM 1422 extern int iplidentify __P((char *)); 1423 # endif 1424 # if (_BSDI_VERSION >= 199510) || (__FreeBSD_version >= 220000) || \ 1425 (NetBSD >= 199511) || defined(__OpenBSD__) 1426 # if defined(__NetBSD__) || (_BSDI_VERSION >= 199701) || \ 1427 defined(__OpenBSD__) || (__FreeBSD_version >= 300000) 1428 # if (__FreeBSD_version >= 500024) 1429 # if (__FreeBSD_version >= 502116) 1430 extern int iplioctl __P((struct cdev*, u_long, caddr_t, int, struct thread *)); 1431 # else 1432 extern int iplioctl __P((dev_t, u_long, caddr_t, int, struct thread *)); 1433 # endif /* __FreeBSD_version >= 502116 */ 1434 # else 1435 extern int iplioctl __P((dev_t, u_long, caddr_t, int, struct proc *)); 1436 # endif /* __FreeBSD_version >= 500024 */ 1437 # else 1438 extern int iplioctl __P((dev_t, int, caddr_t, int, struct proc *)); 1439 # endif 1440 # if (__FreeBSD_version >= 500024) 1441 # if (__FreeBSD_version >= 502116) 1442 extern int iplopen __P((struct cdev*, int, int, struct thread *)); 1443 extern int iplclose __P((struct cdev*, int, int, struct thread *)); 1444 # else 1445 extern int iplopen __P((dev_t, int, int, struct thread *)); 1446 extern int iplclose __P((dev_t, int, int, struct thread *)); 1447 # endif /* __FreeBSD_version >= 502116 */ 1448 # else 1449 extern int iplopen __P((dev_t, int, int, struct proc *)); 1450 extern int iplclose __P((dev_t, int, int, struct proc *)); 1451 # endif /* __FreeBSD_version >= 500024 */ 1452 # else 1453 # ifdef linux 1454 extern int iplioctl __P((struct inode *, struct file *, u_int, u_long)); 1455 # else 1456 extern int iplopen __P((dev_t, int)); 1457 extern int iplclose __P((dev_t, int)); 1458 extern int iplioctl __P((dev_t, int, caddr_t, int)); 1459 # endif 1460 # endif /* (_BSDI_VERSION >= 199510) */ 1461 # if BSD >= 199306 1462 # if (__FreeBSD_version >= 502116) 1463 extern int iplread __P((struct cdev*, struct uio *, int)); 1464 extern int iplwrite __P((struct cdev*, struct uio *, int)); 1465 # else 1466 extern int iplread __P((dev_t, struct uio *, int)); 1467 extern int iplwrite __P((dev_t, struct uio *, int)); 1468 # endif /* __FreeBSD_version >= 502116 */ 1469 # else 1470 # ifndef linux 1471 extern int iplread __P((dev_t, struct uio *)); 1472 extern int iplwrite __P((dev_t, struct uio *)); 1473 # endif 1474 # endif /* BSD >= 199306 */ 1475 # endif /* __ sgi */ 1476 # endif /* MENTAT */ 1477 1478 #endif /* #ifndef _KERNEL */ 1479 1480 extern char *memstr __P((char *, char *, int, int)); 1481 extern int count4bits __P((u_32_t)); 1482 extern int count6bits __P((u_32_t *)); 1483 extern int frrequest __P((int, ioctlcmd_t, caddr_t, int, int, ipf_stack_t *)); 1484 extern char *getifname __P((struct ifnet *)); 1485 extern int iplattach __P((ipf_stack_t *)); 1486 extern int ipldetach __P((ipf_stack_t *)); 1487 extern u_short ipf_cksum __P((u_short *, int)); 1488 extern int copyinptr __P((void *, void *, size_t)); 1489 extern int copyoutptr __P((void *, void *, size_t)); 1490 extern int fr_fastroute __P((mb_t *, mb_t **, fr_info_t *, frdest_t *)); 1491 extern int fr_inobj __P((void *, void *, int)); 1492 extern int fr_inobjsz __P((void *, void *, int, int)); 1493 extern int fr_ioctlswitch __P((int, void *, ioctlcmd_t, int, int, void *, 1494 ipf_stack_t *)); 1495 extern int fr_ipftune __P((ioctlcmd_t, void *, ipf_stack_t *)); 1496 extern int fr_outobj __P((void *, void *, int)); 1497 extern int fr_outobjsz __P((void *, void *, int, int)); 1498 extern void *fr_pullup __P((mb_t *, fr_info_t *, int)); 1499 extern void fr_resolvedest __P((struct frdest *, int, ipf_stack_t *)); 1500 extern int fr_resolvefunc __P((void *)); 1501 extern void *fr_resolvenic __P((char *, int, ipf_stack_t *)); 1502 extern int fr_send_icmp_err __P((int, fr_info_t *, int)); 1503 extern int fr_send_reset __P((fr_info_t *)); 1504 #if (__FreeBSD_version < 490000) || !defined(_KERNEL) 1505 extern int ppsratecheck __P((struct timeval *, int *, int)); 1506 #endif 1507 extern ipftq_t *fr_addtimeoutqueue __P((ipftq_t **, u_int, ipf_stack_t *)); 1508 extern void fr_deletequeueentry __P((ipftqent_t *)); 1509 extern int fr_deletetimeoutqueue __P((ipftq_t *)); 1510 extern void fr_freetimeoutqueue __P((ipftq_t *, ipf_stack_t *)); 1511 extern void fr_movequeue __P((ipftqent_t *, ipftq_t *, ipftq_t *, 1512 ipf_stack_t *)); 1513 extern void fr_queueappend __P((ipftqent_t *, ipftq_t *, void *, 1514 ipf_stack_t *)); 1515 extern void fr_queueback __P((ipftqent_t *, ipf_stack_t *)); 1516 extern void fr_queuefront __P((ipftqent_t *)); 1517 extern void fr_checkv4sum __P((fr_info_t *)); 1518 extern int fr_checkl4sum __P((fr_info_t *)); 1519 extern int fr_ifpfillv4addr __P((int, struct sockaddr_in *, 1520 struct sockaddr_in *, struct in_addr *, 1521 struct in_addr *)); 1522 extern int fr_coalesce __P((fr_info_t *)); 1523 #ifdef USE_INET6 1524 extern void fr_checkv6sum __P((fr_info_t *)); 1525 extern int fr_ifpfillv6addr __P((int, struct sockaddr_in6 *, 1526 struct sockaddr_in6 *, struct in_addr *, 1527 struct in_addr *)); 1528 #endif 1529 1530 #define IPFILTER_COMPAT 1531 extern int fr_incomptrans __P((ipfobj_t *, void *)); 1532 extern int fr_outcomptrans __P((ipfobj_t *, void *)); 1533 1534 extern int fr_addipftune __P((ipftuneable_t *, ipf_stack_t *)); 1535 extern int fr_delipftune __P((ipftuneable_t *, ipf_stack_t *)); 1536 1537 extern int frflush __P((minor_t, int, int, ipf_stack_t *)); 1538 extern void frsync __P((int, int, void *, char *, ipf_stack_t *)); 1539 #if SOLARIS2 >= 10 1540 extern void fr_ifindexsync __P((void *, void *, ipf_stack_t *)); 1541 #endif 1542 extern frgroup_t *fr_addgroup __P((char *, void *, u_32_t, minor_t, int, 1543 ipf_stack_t *)); 1544 extern int fr_derefrule __P((frentry_t **, ipf_stack_t *)); 1545 extern void fr_delgroup __P((char *, minor_t, int, ipf_stack_t *)); 1546 extern frgroup_t *fr_findgroup __P((char *, minor_t, int, frgroup_t ***, 1547 ipf_stack_t *)); 1548 1549 extern int fr_loginit __P((ipf_stack_t *)); 1550 extern int ipflog_clear __P((minor_t, ipf_stack_t *)); 1551 extern int ipflog_read __P((minor_t, struct uio *, ipf_stack_t *)); 1552 extern int ipflog __P((fr_info_t *, u_int)); 1553 extern int ipllog __P((int, fr_info_t *, void **, size_t *, int *, int, 1554 ipf_stack_t *)); 1555 extern void fr_logunload __P((ipf_stack_t *)); 1556 1557 extern frentry_t *fr_acctpkt __P((fr_info_t *, u_32_t *)); 1558 extern int fr_copytolog __P((int, char *, int)); 1559 extern u_short fr_cksum __P((mb_t *, ip_t *, int, void *)); 1560 extern void fr_deinitialise __P((ipf_stack_t *)); 1561 extern frentry_t *fr_dolog __P((fr_info_t *, u_32_t *)); 1562 extern frentry_t *fr_dstgrpmap __P((fr_info_t *, u_32_t *)); 1563 extern void fr_fixskip __P((frentry_t **, frentry_t *, int)); 1564 extern void fr_forgetifp __P((void *, ipf_stack_t *)); 1565 extern frentry_t *fr_getrulen __P((int, char *, u_32_t, 1566 ipf_stack_t *)); 1567 extern void fr_getstat __P((struct friostat *, ipf_stack_t *)); 1568 extern int fr_ifpaddr __P((int, int, void *, 1569 struct in_addr *, struct in_addr *, 1570 ipf_stack_t *)); 1571 extern int fr_initialise __P((ipf_stack_t *)); 1572 extern int fr_lock __P((caddr_t, int *)); 1573 extern int fr_makefrip __P((int, ip_t *, fr_info_t *)); 1574 extern int fr_matchtag __P((ipftag_t *, ipftag_t *)); 1575 extern int fr_matchicmpqueryreply __P((int, icmpinfo_t *, 1576 struct icmp *, int)); 1577 extern u_32_t fr_newisn __P((fr_info_t *)); 1578 extern u_short fr_nextipid __P((fr_info_t *)); 1579 extern int fr_rulen __P((int, frentry_t *, ipf_stack_t *)); 1580 extern int fr_scanlist __P((fr_info_t *, u_32_t)); 1581 extern frentry_t *fr_srcgrpmap __P((fr_info_t *, u_32_t *)); 1582 extern int fr_tcpudpchk __P((fr_info_t *, frtuc_t *)); 1583 extern int fr_verifysrc __P((fr_info_t *fin)); 1584 extern int fr_zerostats __P((char *, ipf_stack_t *)); 1585 extern ipftoken_t *ipf_findtoken __P((int, int, void *, ipf_stack_t *)); 1586 extern int ipf_getnextrule __P((ipftoken_t *, void *, 1587 ipf_stack_t *)); 1588 extern void ipf_expiretokens __P((ipf_stack_t *)); 1589 extern void ipf_freetoken __P((ipftoken_t *, ipf_stack_t *)); 1590 extern int ipf_deltoken __P((int, int, void *, ipf_stack_t *)); 1591 extern int ipf_genericiter __P((void *, int, void *, ipf_stack_t *)); 1592 extern int ipf_extraflush __P((int, ipftq_t *, ipftq_t *, ipf_stack_t *)); 1593 extern int ipf_flushclosing __P((int, int, ipftq_t *, ipftq_t *, ipf_stack_t *)); 1594 extern int ipf_earlydrop __P((int, ipftq_t *, int, ipf_stack_t *)); 1595 1596 #ifndef ipf_random 1597 extern u_32_t ipf_random __P((void)); 1598 #endif 1599 1600 #if defined(_KERNEL) 1601 extern int fr_setzoneid __P((ipf_devstate_t *, void *)); 1602 #endif 1603 1604 extern char ipfilter_version[]; 1605 #ifdef USE_INET6 1606 extern int icmptoicmp6types[ICMP_MAXTYPE+1]; 1607 extern int icmptoicmp6unreach[ICMP_MAX_UNREACH]; 1608 extern int icmpreplytype6[ICMP6_MAXTYPE + 1]; 1609 #endif 1610 extern int icmpreplytype4[ICMP_MAXTYPE + 1]; 1611 extern frentry_t *ipfrule_match __P((fr_info_t *)); 1612 1613 extern void ipftuneable_alloc(ipf_stack_t *); 1614 extern void ipftuneable_free(ipf_stack_t *); 1615 1616 #endif /* __IP_FIL_H__ */ 1617