1 /* 2 * Copyright (C) 1993-2001, 2003 by Darren Reed. 3 * 4 * See the IPFILTER.LICENCE file for details on licencing. 5 * 6 * $Id: ip_fil.h,v 2.146 2003/07/01 18:30:19 darrenr Exp $ 7 * 8 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 9 * Use is subject to license terms. 10 */ 11 12 #pragma ident "%Z%%M% %I% %E% SMI" 13 14 #ifndef __IP_FIL_H__ 15 #define __IP_FIL_H__ 16 17 #ifndef SOLARIS 18 # define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4))) 19 #endif 20 21 #ifndef __P 22 # ifdef __STDC__ 23 # define __P(x) x 24 # else 25 # define __P(x) () 26 # endif 27 #endif 28 29 #if defined(__STDC__) || defined(__GNUC__) 30 # define SIOCADAFR _IOW('r', 60, struct ipfobj) 31 # define SIOCRMAFR _IOW('r', 61, struct ipfobj) 32 # define SIOCSETFF _IOW('r', 62, u_int) 33 # define SIOCGETFF _IOR('r', 63, u_int) 34 # define SIOCGETFS _IOWR('r', 64, struct ipfobj) 35 # define SIOCIPFFL _IOWR('r', 65, int) 36 # define SIOCIPFFB _IOR('r', 66, int) 37 # define SIOCADIFR _IOW('r', 67, struct ipfobj) 38 # define SIOCRMIFR _IOW('r', 68, struct ipfobj) 39 # define SIOCSWAPA _IOR('r', 69, u_int) 40 # define SIOCINAFR _IOW('r', 70, struct ipfobj) 41 # define SIOCINIFR _IOW('r', 71, struct ipfobj) 42 # define SIOCFRENB _IOW('r', 72, u_int) 43 # define SIOCFRSYN _IOW('r', 73, u_int) 44 # define SIOCFRZST _IOWR('r', 74, struct ipfobj) 45 # define SIOCZRLST _IOWR('r', 75, struct ipfobj) 46 # define SIOCAUTHW _IOWR('r', 76, struct ipfobj) 47 # define SIOCAUTHR _IOWR('r', 77, struct ipfobj) 48 # define SIOCATHST _IOWR('r', 78, struct ipfobj) 49 # define SIOCSTLCK _IOWR('r', 79, u_int) 50 # define SIOCSTPUT _IOWR('r', 80, struct ipfobj) 51 # define SIOCSTGET _IOWR('r', 81, struct ipfobj) 52 # define SIOCSTGSZ _IOWR('r', 82, struct ipfobj) 53 # define SIOCGFRST _IOWR('r', 83, struct ipfobj) 54 # define SIOCSETLG _IOWR('r', 84, int) 55 # define SIOCGETLG _IOWR('r', 85, int) 56 # define SIOCFUNCL _IOWR('r', 86, struct ipfunc_resolve) 57 # define SIOCIPFGETNEXT _IOWR('r', 87, struct ipfobj) 58 # define SIOCIPFGET _IOWR('r', 88, struct ipfobj) 59 # define SIOCIPFSET _IOWR('r', 89, struct ipfobj) 60 # define SIOCIPFL6 _IOWR('r', 90, int) 61 #else 62 # define SIOCADAFR _IOW(r, 60, struct ipfobj) 63 # define SIOCRMAFR _IOW(r, 61, struct ipfobj) 64 # define SIOCSETFF _IOW(r, 62, u_int) 65 # define SIOCGETFF _IOR(r, 63, u_int) 66 # define SIOCGETFS _IOWR(r, 64, struct ipfobj) 67 # define SIOCIPFFL _IOWR(r, 65, int) 68 # define SIOCIPFFB _IOR(r, 66, int) 69 # define SIOCADIFR _IOW(r, 67, struct ipfobj) 70 # define SIOCRMIFR _IOW(r, 68, struct ipfobj) 71 # define SIOCSWAPA _IOR(r, 69, u_int) 72 # define SIOCINAFR _IOW(r, 70, struct ipfobj) 73 # define SIOCINIFR _IOW(r, 71, struct ipfobj) 74 # define SIOCFRENB _IOW(r, 72, u_int) 75 # define SIOCFRSYN _IOW(r, 73, u_int) 76 # define SIOCFRZST _IOWR(r, 74, struct ipfobj) 77 # define SIOCZRLST _IOWR(r, 75, struct ipfobj) 78 # define SIOCAUTHW _IOWR(r, 76, struct ipfobj) 79 # define SIOCAUTHR _IOWR(r, 77, struct ipfobj) 80 # define SIOCATHST _IOWR(r, 78, struct ipfobj) 81 # define SIOCSTLCK _IOWR(r, 79, u_int) 82 # define SIOCSTPUT _IOWR(r, 80, struct ipfobj) 83 # define SIOCSTGET _IOWR(r, 81, struct ipfobj) 84 # define SIOCSTGSZ _IOWR(r, 82, struct ipfobj) 85 # define SIOCGFRST _IOWR(r, 83, struct ipfobj) 86 # define SIOCSETLG _IOWR(r, 84, int) 87 # define SIOCGETLG _IOWR(r, 85, int) 88 # define SIOCFUNCL _IOWR(r, 86, struct ipfunc_resolve) 89 # define SIOCIPFGETNEXT _IOWR(r, 87, struct ipfobj) 90 # define SIOCIPFGET _IOWR(r, 88, struct ipfobj) 91 # define SIOCIPFSET _IOWR(r, 89, struct ipfobj) 92 # define SIOCIPFL6 _IOWR(r, 90, int) 93 #endif 94 #define SIOCADDFR SIOCADAFR 95 #define SIOCDELFR SIOCRMAFR 96 #define SIOCINSFR SIOCINAFR 97 98 99 struct ipscan; 100 struct ifnet; 101 102 103 typedef int (* lookupfunc_t) __P((void *, int, void *)); 104 105 /* 106 * i6addr is used as a container for both IPv4 and IPv6 addresses, as well 107 * as other types of objects, depending on its qualifier. 108 */ 109 #ifdef USE_INET6 110 typedef union i6addr { 111 u_32_t i6[4]; 112 struct in_addr in4; 113 struct in6_addr in6; 114 void *vptr[2]; 115 lookupfunc_t lptr[2]; 116 } i6addr_t; 117 #define in6_addr8 in6.s6_addr 118 #else 119 typedef union i6addr { 120 u_32_t i6[4]; 121 struct in_addr in4; 122 void *vptr[2]; 123 lookupfunc_t lptr[2]; 124 } i6addr_t; 125 #endif 126 #define in4_addr in4.s_addr 127 #define iplookupnum i6[0] 128 #define iplookuptype i6[1] 129 /* 130 * NOTE: These DO overlap the above on 64bit systems and this IS recognised. 131 */ 132 #define iplookupptr vptr[0] 133 #define iplookupfunc lptr[1] 134 135 #define I60(x) (((i6addr_t *)(x))->i6[0]) 136 #define I61(x) (((i6addr_t *)(x))->i6[1]) 137 #define I62(x) (((i6addr_t *)(x))->i6[2]) 138 #define I63(x) (((i6addr_t *)(x))->i6[3]) 139 #define HI60(x) ntohl(((i6addr_t *)(x))->i6[0]) 140 #define HI61(x) ntohl(((i6addr_t *)(x))->i6[1]) 141 #define HI62(x) ntohl(((i6addr_t *)(x))->i6[2]) 142 #define HI63(x) ntohl(((i6addr_t *)(x))->i6[3]) 143 144 #define IP6_EQ(a,b) ((I63(a) == I63(b)) && (I62(a) == I62(b)) && \ 145 (I61(a) == I61(b)) && (I60(a) == I60(b))) 146 #define IP6_NEQ(a,b) ((I63(a) != I63(b)) || (I62(a) != I62(b)) || \ 147 (I61(a) != I61(b)) || (I60(a) != I60(b))) 148 #define IP6_ISZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) == 0) 149 #define IP6_NOTZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) != 0) 150 #define IP6_GT(a,b) (HI60(a) > HI60(b) || (HI60(a) == HI60(b) && \ 151 (HI61(a) > HI61(b) || (HI61(a) == HI61(b) && \ 152 (HI62(a) > HI62(b) || (HI62(a) == HI62(b) && \ 153 HI63(a) > HI63(b))))))) 154 #define IP6_LT(a,b) (HI60(a) < HI60(b) || (HI60(a) == HI60(b) && \ 155 (HI61(a) < HI61(b) || (HI61(a) == HI61(b) && \ 156 (HI62(a) < HI62(b) || (HI62(a) == HI62(b) && \ 157 HI63(a) < HI63(b))))))) 158 #define NLADD(n,x) htonl(ntohl(n) + (x)) 159 #define IP6_INC(a) \ 160 { i6addr_t *_i6 = (i6addr_t *)(a); \ 161 _i6->i6[0] = NLADD(_i6->i6[0], 1); \ 162 if (_i6->i6[0] == 0) { \ 163 _i6->i6[0] = NLADD(_i6->i6[1], 1); \ 164 if (_i6->i6[1] == 0) { \ 165 _i6->i6[0] = NLADD(_i6->i6[2], 1); \ 166 if (_i6->i6[2] == 0) { \ 167 _i6->i6[0] = NLADD(_i6->i6[3], 1); \ 168 } \ 169 } \ 170 } \ 171 } 172 #define IP6_ADD(a,x,d) \ 173 { i6addr_t *_s = (i6addr_t *)(a); \ 174 i6addr_t *_d = (i6addr_t *)(d); \ 175 _d->i6[0] = NLADD(_s->i6[0], x); \ 176 if (ntohl(_d->i6[0]) < ntohl(_s->i6[0])) { \ 177 _d->i6[1] = NLADD(_d->i6[1], 1); \ 178 if (ntohl(_d->i6[1]) < ntohl(_s->i6[1])) { \ 179 _d->i6[2] = NLADD(_d->i6[2], 1); \ 180 if (ntohl(_d->i6[2]) < ntohl(_s->i6[2])) { \ 181 _d->i6[3] = NLADD(_d->i6[3], 1); \ 182 } \ 183 } \ 184 } \ 185 } 186 #define IP6_AND(a,b,d) { i6addr_t *_s1 = (i6addr_t *)(a); \ 187 i6addr_t *_s2 = (i6addr_t *)(d); \ 188 i6addr_t *_d = (i6addr_t *)(d); \ 189 _d->i6[0] = _s1->i6[0] & _s2->i6[0]; \ 190 _d->i6[1] = _s1->i6[1] & _s2->i6[1]; \ 191 _d->i6[2] = _s1->i6[2] & _s2->i6[2]; \ 192 _d->i6[3] = _s1->i6[3] & _s2->i6[3]; \ 193 } 194 #define IP6_MERGE(a,b,c) \ 195 { i6addr_t *_d, *_s1, *_s2; \ 196 _d = (i6addr_t *)(a); \ 197 _s1 = (i6addr_t *)(b); \ 198 _s2 = (i6addr_t *)(c); \ 199 _d->i6[0] |= _s1->i6[0] & ~_s2->i6[0]; \ 200 _d->i6[1] |= _s1->i6[1] & ~_s2->i6[1]; \ 201 _d->i6[2] |= _s1->i6[2] & ~_s2->i6[2]; \ 202 _d->i6[2] |= _s1->i6[3] & ~_s2->i6[3]; \ 203 } 204 205 206 typedef struct fr_ip { 207 u_32_t fi_v:4; /* IP version */ 208 u_32_t fi_xx:4; /* spare */ 209 u_32_t fi_tos:8; /* IP packet TOS */ 210 u_32_t fi_ttl:8; /* IP packet TTL */ 211 u_32_t fi_p:8; /* IP packet protocol */ 212 u_32_t fi_optmsk; /* bitmask composed from IP options */ 213 i6addr_t fi_src; /* source address from packet */ 214 i6addr_t fi_dst; /* destination address from packet */ 215 u_short fi_secmsk; /* bitmask composed from IP security options */ 216 u_short fi_auth; /* authentication code from IP sec. options */ 217 u_32_t fi_flx; /* packet flags */ 218 u_32_t fi_tcpmsk; /* TCP options set/reset */ 219 u_32_t fi_res1; /* RESERVED */ 220 } fr_ip_t; 221 222 /* 223 * For use in fi_flx 224 */ 225 #define FI_TCPUDP 0x0001 /* TCP/UCP implied comparison*/ 226 #define FI_OPTIONS 0x0002 227 #define FI_FRAG 0x0004 228 #define FI_SHORT 0x0008 229 #define FI_NATED 0x0010 230 #define FI_MULTICAST 0x0020 231 #define FI_BROADCAST 0x0040 232 #define FI_MBCAST 0x0080 233 #define FI_STATE 0x0100 234 #define FI_BADNAT 0x0200 235 #define FI_BAD 0x0400 236 #define FI_OOW 0x0800 /* Out of state window, else match */ 237 #define FI_ICMPERR 0x1000 238 #define FI_FRAGTAIL 0x2000 239 #define FI_BADSRC 0x4000 240 #define FI_LOWTTL 0x8000 241 #define FI_CMP 0xcff3 /* Not FI_FRAG,FI_FRAGTAIL */ 242 #define FI_WITH 0xeffe /* Not FI_TCPUDP */ 243 #define FI_V6EXTHDR 0x10000 244 #define FI_COALESCE 0x20000 245 #define FI_NOCKSUM 0x20000000 /* don't do a L4 checksum validation */ 246 #define FI_DONTCACHE 0x40000000 /* don't cache the result */ 247 #define FI_IGNORE 0x80000000 248 249 #define fi_saddr fi_src.in4.s_addr 250 #define fi_daddr fi_dst.in4.s_addr 251 #define fi_srcnum fi_src.iplookupnum 252 #define fi_dstnum fi_dst.iplookupnum 253 #define fi_srctype fi_src.iplookuptype 254 #define fi_dsttype fi_dst.iplookuptype 255 #define fi_srcptr fi_src.iplookupptr 256 #define fi_dstptr fi_dst.iplookupptr 257 #define fi_srcfunc fi_src.iplookupfunc 258 #define fi_dstfunc fi_dst.iplookupfunc 259 260 261 /* 262 * These are both used by the state and NAT code to indicate that one port or 263 * the other should be treated as a wildcard. 264 * NOTE: When updating, check bit masks in ip_state.h and update there too. 265 */ 266 #define SI_W_SPORT 0x00000100 267 #define SI_W_DPORT 0x00000200 268 #define SI_WILDP (SI_W_SPORT|SI_W_DPORT) 269 #define SI_W_SADDR 0x00000400 270 #define SI_W_DADDR 0x00000800 271 #define SI_WILDA (SI_W_SADDR|SI_W_DADDR) 272 #define SI_NEWFR 0x00001000 273 #define SI_CLONE 0x00002000 274 #define SI_CLONED 0x00004000 275 276 277 typedef struct fr_info { 278 void *fin_ifp; /* interface packet is `on' */ 279 struct fr_ip fin_fi; /* IP Packet summary */ 280 union { 281 u_short fid_16[2]; /* TCP/UDP ports, ICMP code/type */ 282 u_32_t fid_32; 283 } fin_dat; 284 int fin_out; /* in or out ? 1 == out, 0 == in */ 285 int fin_rev; /* state only: 1 = reverse */ 286 u_short fin_hlen; /* length of IP header in bytes */ 287 u_char fin_tcpf; /* TCP header flags (SYN, ACK, etc) */ 288 u_char fin_icode; /* ICMP error to return */ 289 u_32_t fin_rule; /* rule # last matched */ 290 char fin_group[FR_GROUPLEN]; /* group number, -1 for none */ 291 struct frentry *fin_fr; /* last matching rule */ 292 void *fin_dp; /* start of data past IP header */ 293 int fin_dlen; /* length of data portion of packet */ 294 int fin_plen; 295 int fin_flen; /* length of layer 4 hdr and 296 ipv6 ext hdr after fragment hdr */ 297 u_32_t fin_id; /* IP packet id field */ 298 u_short fin_off; 299 int fin_depth; /* Group nesting depth */ 300 int fin_error; /* Error code to return */ 301 void *fin_nat; 302 void *fin_state; 303 void *fin_nattag; 304 ip_t *fin_ip; 305 mb_t **fin_mp; /* pointer to pointer to mbuf */ 306 mb_t *fin_m; /* pointer to mbuf */ 307 #ifdef MENTAT 308 mb_t *fin_qfm; /* pointer to mblk where pkt starts */ 309 void *fin_qif; 310 #endif 311 } fr_info_t; 312 313 #define fin_v fin_fi.fi_v 314 #define fin_p fin_fi.fi_p 315 #define fin_flx fin_fi.fi_flx 316 #define fin_optmsk fin_fi.fi_optmsk 317 #define fin_secmsk fin_fi.fi_secmsk 318 #define fin_auth fin_fi.fi_auth 319 #define fin_src fin_fi.fi_src.in4 320 #define fin_src6 fin_fi.fi_src.in6 321 #define fin_saddr fin_fi.fi_saddr 322 #define fin_dst fin_fi.fi_dst.in4 323 #define fin_dst6 fin_fi.fi_dst.in6 324 #define fin_daddr fin_fi.fi_daddr 325 #define fin_data fin_dat.fid_16 326 #define fin_sport fin_dat.fid_16[0] 327 #define fin_dport fin_dat.fid_16[1] 328 #define fin_ports fin_dat.fid_32 329 330 #define IPF_IN 0 331 #define IPF_OUT 1 332 333 typedef struct frentry *(*ipfunc_t) __P((fr_info_t *, u_32_t *)); 334 typedef int (*ipfuncinit_t) __P((struct frentry *)); 335 336 typedef struct ipfunc_resolve { 337 char ipfu_name[32]; 338 ipfunc_t ipfu_addr; 339 ipfuncinit_t ipfu_init; 340 } ipfunc_resolve_t; 341 342 /* 343 * Size for compares on fr_info structures 344 */ 345 #define FI_CSIZE offsetof(fr_info_t, fin_icode) 346 #define FI_LCSIZE offsetof(fr_info_t, fin_dp) 347 348 /* 349 * Size for copying cache fr_info structure 350 */ 351 #define FI_COPYSIZE offsetof(fr_info_t, fin_dp) 352 353 /* 354 * 355 */ 356 typedef struct { 357 union { 358 u_32_t iptu_num[4]; 359 char iptu_tag[16]; 360 } ipt_un; 361 int ipt_not; 362 } ipftag_t; 363 364 #define ipt_tag ipt_un.iptu_tag 365 #define ipt_num ipt_un.iptu_num 366 367 368 /* 369 * This structure is used to hold information about the next hop for where 370 * to forward a packet. 371 */ 372 typedef struct frdest { 373 void *fd_ifp; 374 i6addr_t fd_ip6; 375 char fd_ifname[LIFNAMSIZ]; 376 } frdest_t; 377 378 #define fd_ip fd_ip6.in4 379 380 381 /* 382 * This structure holds information about a port comparison. 383 */ 384 typedef struct frpcmp { 385 int frp_cmp; /* data for port comparisons */ 386 u_short frp_port; /* top port for <> and >< */ 387 u_short frp_top; /* top port for <> and >< */ 388 } frpcmp_t; 389 390 #define FR_NONE 0 391 #define FR_EQUAL 1 392 #define FR_NEQUAL 2 393 #define FR_LESST 3 394 #define FR_GREATERT 4 395 #define FR_LESSTE 5 396 #define FR_GREATERTE 6 397 #define FR_OUTRANGE 7 398 #define FR_INRANGE 8 399 #define FR_INCRANGE 9 400 401 /* 402 * Structure containing all the relevant TCP things that can be checked in 403 * a filter rule. 404 */ 405 typedef struct frtuc { 406 u_char ftu_tcpfm; /* tcp flags mask */ 407 u_char ftu_tcpf; /* tcp flags */ 408 frpcmp_t ftu_src; 409 frpcmp_t ftu_dst; 410 } frtuc_t; 411 412 #define ftu_scmp ftu_src.frp_cmp 413 #define ftu_dcmp ftu_dst.frp_cmp 414 #define ftu_sport ftu_src.frp_port 415 #define ftu_dport ftu_dst.frp_port 416 #define ftu_stop ftu_src.frp_top 417 #define ftu_dtop ftu_dst.frp_top 418 419 #define FR_TCPFMAX 0x3f 420 421 /* 422 * This structure makes up what is considered to be the IPFilter specific 423 * matching components of a filter rule, as opposed to the data structures 424 * used to define the result which are in frentry_t and not here. 425 */ 426 typedef struct fripf { 427 struct fr_ip fri_ip; 428 struct fr_ip fri_mip; /* mask structure */ 429 430 u_short fri_icmpm; /* data for ICMP packets (mask) */ 431 u_short fri_icmp; 432 433 frtuc_t fri_tuc; 434 int fri_satype; /* addres type */ 435 int fri_datype; /* addres type */ 436 int fri_sifpidx; /* doing dynamic addressing */ 437 int fri_difpidx; /* index into fr_ifps[] to use when */ 438 } fripf_t; 439 440 #define fri_dstnum fri_ip.fi_dstnum 441 #define fri_srcnum fri_mip.fi_srcnum 442 #define fri_dstptr fri_ip.fi_dstptr 443 #define fri_srcptr fri_mip.fi_srcptr 444 445 #define FRI_NORMAL 0 /* Normal address */ 446 #define FRI_DYNAMIC 1 /* dynamic address */ 447 #define FRI_LOOKUP 2 /* address is a pool # */ 448 #define FRI_RANGE 3 /* address/mask is a range */ 449 #define FRI_NETWORK 4 /* network address from if */ 450 #define FRI_BROADCAST 5 /* broadcast address from if */ 451 #define FRI_PEERADDR 6 /* Peer address for P-to-P */ 452 #define FRI_NETMASKED 7 /* network address with netmask from if */ 453 454 455 typedef struct frentry * (* frentfunc_t) __P((fr_info_t *)); 456 457 typedef struct frentry { 458 ipfmutex_t fr_lock; 459 struct frentry *fr_next; 460 struct frentry **fr_grp; 461 struct ipscan *fr_isc; 462 void *fr_ifas[4]; 463 void *fr_ptr; /* for use with fr_arg */ 464 char *fr_comment; /* text comment for rule */ 465 int fr_ref; /* reference count - for grouping */ 466 int fr_statecnt; /* state count - for limit rules */ 467 /* 468 * These are only incremented when a packet matches this rule and 469 * it is the last match 470 */ 471 U_QUAD_T fr_hits; 472 U_QUAD_T fr_bytes; 473 474 /* 475 * For PPS rate limiting 476 */ 477 struct timeval fr_lastpkt; 478 int fr_curpps; 479 480 union { 481 void *fru_data; 482 caddr_t fru_caddr; 483 fripf_t *fru_ipf; 484 frentfunc_t fru_func; 485 } fr_dun; 486 487 /* 488 * Fields after this may not change whilst in the kernel. 489 */ 490 ipfunc_t fr_func; /* call this function */ 491 int fr_dsize; 492 int fr_pps; 493 int fr_statemax; /* max reference count */ 494 int fr_flineno; /* line number from conf file */ 495 u_32_t fr_type; 496 u_32_t fr_flags; /* per-rule flags && options (see below) */ 497 u_32_t fr_logtag; /* user defined log tag # */ 498 u_32_t fr_collect; /* collection number */ 499 u_int fr_arg; /* misc. numeric arg for rule */ 500 u_int fr_loglevel; /* syslog log facility + priority */ 501 u_int fr_age[2]; /* non-TCP timeouts */ 502 u_char fr_v; 503 u_char fr_icode; /* return ICMP code */ 504 char fr_group[FR_GROUPLEN]; /* group to which this rule belongs */ 505 char fr_grhead[FR_GROUPLEN]; /* group # which this rule starts */ 506 ipftag_t fr_nattag; 507 char fr_ifnames[4][LIFNAMSIZ]; 508 char fr_isctag[16]; 509 struct frdest fr_tifs[2]; /* "to"/"reply-to" interface */ 510 struct frdest fr_dif; /* duplicate packet interface */ 511 /* 512 * This must be last and will change after loaded into the kernel. 513 */ 514 u_int fr_cksum; /* checksum on filter rules for performance */ 515 } frentry_t; 516 517 #define fr_caddr fr_dun.fru_caddr 518 #define fr_data fr_dun.fru_data 519 #define fr_dfunc fr_dun.fru_func 520 #define fr_ipf fr_dun.fru_ipf 521 #define fr_ip fr_ipf->fri_ip 522 #define fr_mip fr_ipf->fri_mip 523 #define fr_icmpm fr_ipf->fri_icmpm 524 #define fr_icmp fr_ipf->fri_icmp 525 #define fr_tuc fr_ipf->fri_tuc 526 #define fr_satype fr_ipf->fri_satype 527 #define fr_datype fr_ipf->fri_datype 528 #define fr_sifpidx fr_ipf->fri_sifpidx 529 #define fr_difpidx fr_ipf->fri_difpidx 530 #define fr_proto fr_ip.fi_p 531 #define fr_mproto fr_mip.fi_p 532 #define fr_ttl fr_ip.fi_ttl 533 #define fr_mttl fr_mip.fi_ttl 534 #define fr_tos fr_ip.fi_tos 535 #define fr_mtos fr_mip.fi_tos 536 #define fr_tcpfm fr_tuc.ftu_tcpfm 537 #define fr_tcpf fr_tuc.ftu_tcpf 538 #define fr_scmp fr_tuc.ftu_scmp 539 #define fr_dcmp fr_tuc.ftu_dcmp 540 #define fr_dport fr_tuc.ftu_dport 541 #define fr_sport fr_tuc.ftu_sport 542 #define fr_stop fr_tuc.ftu_stop 543 #define fr_dtop fr_tuc.ftu_dtop 544 #define fr_dst fr_ip.fi_dst.in4 545 #define fr_daddr fr_ip.fi_dst.in4.s_addr 546 #define fr_src fr_ip.fi_src.in4 547 #define fr_saddr fr_ip.fi_src.in4.s_addr 548 #define fr_dmsk fr_mip.fi_dst.in4 549 #define fr_dmask fr_mip.fi_dst.in4.s_addr 550 #define fr_smsk fr_mip.fi_src.in4 551 #define fr_smask fr_mip.fi_src.in4.s_addr 552 #define fr_dstnum fr_ip.fi_dstnum 553 #define fr_srcnum fr_ip.fi_srcnum 554 #define fr_dsttype fr_ip.fi_dsttype 555 #define fr_srctype fr_ip.fi_srctype 556 #define fr_dstptr fr_mip.fi_dstptr 557 #define fr_srcptr fr_mip.fi_srcptr 558 #define fr_dstfunc fr_mip.fi_dstfunc 559 #define fr_srcfunc fr_mip.fi_srcfunc 560 #define fr_optbits fr_ip.fi_optmsk 561 #define fr_optmask fr_mip.fi_optmsk 562 #define fr_secbits fr_ip.fi_secmsk 563 #define fr_secmask fr_mip.fi_secmsk 564 #define fr_authbits fr_ip.fi_auth 565 #define fr_authmask fr_mip.fi_auth 566 #define fr_flx fr_ip.fi_flx 567 #define fr_mflx fr_mip.fi_flx 568 #define fr_ifname fr_ifnames[0] 569 #define fr_oifname fr_ifnames[2] 570 #define fr_ifa fr_ifas[0] 571 #define fr_oifa fr_ifas[2] 572 #define fr_tif fr_tifs[0] 573 #define fr_rif fr_tifs[1] 574 575 #define FR_NOLOGTAG 0 576 577 #ifndef offsetof 578 #define offsetof(t,m) (int)((&((t *)0L)->m)) 579 #endif 580 #define FR_CMPSIZ (sizeof(struct frentry) - \ 581 offsetof(struct frentry, fr_dsize)) 582 583 /* 584 * fr_type 585 */ 586 #define FR_T_NONE 0 587 #define FR_T_IPF 1 /* IPF structures */ 588 #define FR_T_BPFOPC 2 /* BPF opcode */ 589 #define FR_T_CALLFUNC 3 /* callout to function in fr_func only */ 590 #define FR_T_COMPIPF 4 /* compiled C code */ 591 #define FR_T_BUILTIN 0x80000000 /* rule is in kernel space */ 592 593 /* 594 * fr_flags 595 */ 596 #define FR_CALL 0x00000 /* call rule */ 597 #define FR_BLOCK 0x00001 /* do not allow packet to pass */ 598 #define FR_PASS 0x00002 /* allow packet to pass */ 599 #define FR_AUTH 0x00003 /* use authentication */ 600 #define FR_PREAUTH 0x00004 /* require preauthentication */ 601 #define FR_ACCOUNT 0x00005 /* Accounting rule */ 602 #define FR_SKIP 0x00006 /* skip rule */ 603 #define FR_DIVERT 0x00007 /* divert rule */ 604 #define FR_CMDMASK 0x0000f 605 #define FR_LOG 0x00010 /* Log */ 606 #define FR_LOGB 0x00011 /* Log-fail */ 607 #define FR_LOGP 0x00012 /* Log-pass */ 608 #define FR_LOGMASK (FR_LOG|FR_CMDMASK) 609 #define FR_CALLNOW 0x00020 /* call another function (fr_func) if matches */ 610 #define FR_NOTSRCIP 0x00040 611 #define FR_NOTDSTIP 0x00080 612 #define FR_QUICK 0x00100 /* match & stop processing list */ 613 #define FR_KEEPFRAG 0x00200 /* keep fragment information */ 614 #define FR_KEEPSTATE 0x00400 /* keep `connection' state information */ 615 #define FR_FASTROUTE 0x00800 /* bypass normal routing */ 616 #define FR_RETRST 0x01000 /* Return TCP RST packet - reset connection */ 617 #define FR_RETICMP 0x02000 /* Return ICMP unreachable packet */ 618 #define FR_FAKEICMP 0x03000 /* Return ICMP unreachable with fake source */ 619 #define FR_OUTQUE 0x04000 /* outgoing packets */ 620 #define FR_INQUE 0x08000 /* ingoing packets */ 621 #define FR_LOGBODY 0x10000 /* Log the body */ 622 #define FR_LOGFIRST 0x20000 /* Log the first byte if state held */ 623 #define FR_LOGORBLOCK 0x40000 /* block the packet if it can't be logged */ 624 #define FR_DUP 0x80000 /* duplicate packet */ 625 #define FR_FRSTRICT 0x100000 /* strict frag. cache */ 626 #define FR_STSTRICT 0x200000 /* strict keep state */ 627 #define FR_NEWISN 0x400000 /* new ISN for outgoing TCP */ 628 #define FR_NOICMPERR 0x800000 /* do not match ICMP errors in state */ 629 #define FR_NOMATCH 0x8000000 /* no match occured */ 630 /* 0x10000000 FF_LOGPASS */ 631 /* 0x20000000 FF_LOGBLOCK */ 632 /* 0x40000000 FF_LOGNOMATCH */ 633 /* 0x80000000 FF_BLOCKNONIP */ 634 #define FR_COPIED 0x40000000 /* copied from user space */ 635 #define FR_INACTIVE 0x80000000 /* only used when flush'ing rules */ 636 637 #define FR_RETMASK (FR_RETICMP|FR_RETRST|FR_FAKEICMP) 638 #define FR_ISBLOCK(x) (((x) & FR_CMDMASK) == FR_BLOCK) 639 #define FR_ISPASS(x) (((x) & FR_CMDMASK) == FR_PASS) 640 #define FR_ISAUTH(x) (((x) & FR_CMDMASK) == FR_AUTH) 641 #define FR_ISPREAUTH(x) (((x) & FR_CMDMASK) == FR_PREAUTH) 642 #define FR_ISACCOUNT(x) (((x) & FR_CMDMASK) == FR_ACCOUNT) 643 #define FR_ISSKIP(x) (((x) & FR_CMDMASK) == FR_SKIP) 644 #define FR_ISNOMATCH(x) ((x) & FR_NOMATCH) 645 #define FR_INOUT (FR_INQUE|FR_OUTQUE) 646 647 /* 648 * recognized flags for SIOCGETFF and SIOCSETFF, and get put in fr_flags 649 */ 650 #define FF_LOGPASS 0x10000000 651 #define FF_LOGBLOCK 0x20000000 652 #define FF_LOGNOMATCH 0x40000000 653 #define FF_LOGGING (FF_LOGPASS|FF_LOGBLOCK|FF_LOGNOMATCH) 654 #define FF_BLOCKNONIP 0x80000000 /* Solaris2 Only */ 655 656 657 /* 658 * Structure that passes information on what/how to flush to the kernel. 659 */ 660 typedef struct ipfflush { 661 int ipflu_how; 662 int ipflu_arg; 663 } ipfflush_t; 664 665 666 /* 667 * 668 */ 669 typedef struct ipfgetctl { 670 u_int ipfg_min; /* min value */ 671 u_int ipfg_current; /* current value */ 672 u_int ipfg_max; /* max value */ 673 u_int ipfg_default; /* default value */ 674 u_int ipfg_steps; /* value increments */ 675 char ipfg_name[40]; /* tag name for this control */ 676 } ipfgetctl_t; 677 678 typedef struct ipfsetctl { 679 int ipfs_which; /* 0 = min 1 = current 2 = max 3 = default */ 680 u_int ipfs_value; /* min value */ 681 char ipfs_name[40]; /* tag name for this control */ 682 } ipfsetctl_t; 683 684 685 /* 686 * Some of the statistics below are in their own counters, but most are kept 687 * in this single structure so that they can all easily be collected and 688 * copied back as required. 689 */ 690 typedef struct filterstats { 691 u_long fr_pass; /* packets allowed */ 692 u_long fr_block; /* packets denied */ 693 u_long fr_nom; /* packets which don't match any rule */ 694 u_long fr_short; /* packets which are short */ 695 u_long fr_ppkl; /* packets allowed and logged */ 696 u_long fr_bpkl; /* packets denied and logged */ 697 u_long fr_npkl; /* packets unmatched and logged */ 698 u_long fr_pkl; /* packets logged */ 699 u_long fr_skip; /* packets to be logged but buffer full */ 700 u_long fr_ret; /* packets for which a return is sent */ 701 u_long fr_acct; /* packets for which counting was performed */ 702 u_long fr_bnfr; /* bad attempts to allocate fragment state */ 703 u_long fr_nfr; /* new fragment state kept */ 704 u_long fr_cfr; /* add new fragment state but complete pkt */ 705 u_long fr_bads; /* bad attempts to allocate packet state */ 706 u_long fr_ads; /* new packet state kept */ 707 u_long fr_chit; /* cached hit */ 708 u_long fr_tcpbad; /* TCP checksum check failures */ 709 u_long fr_pull[2]; /* good and bad pullup attempts */ 710 u_long fr_badsrc; /* source received doesn't match route */ 711 u_long fr_badttl; /* TTL in packet doesn't reach minimum */ 712 u_long fr_bad; /* bad IP packets to the filter */ 713 u_long fr_ipv6; /* IPv6 packets in/out */ 714 u_long fr_ppshit; /* dropped because of pps ceiling */ 715 u_long fr_ipud; /* IP id update failures */ 716 } filterstats_t; 717 718 /* 719 * Log structure. Each packet header logged is prepended by one of these. 720 * Following this in the log records read from the device will be an ipflog 721 * structure which is then followed by any packet data. 722 */ 723 typedef struct iplog { 724 u_32_t ipl_magic; 725 u_int ipl_count; 726 struct timeval ipl_tv; 727 size_t ipl_dsize; 728 struct iplog *ipl_next; 729 } iplog_t; 730 731 #define ipl_sec ipl_tv.tv_sec 732 #define ipl_usec ipl_tv.tv_usec 733 734 #define IPL_MAGIC 0x49504c4d /* 'IPLM' */ 735 #define IPLOG_SIZE sizeof(iplog_t) 736 737 typedef struct ipflog { 738 #if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \ 739 (defined(OpenBSD) && (OpenBSD >= 199603)) 740 #else 741 u_int fl_unit; 742 #endif 743 u_32_t fl_rule; 744 u_32_t fl_flags; 745 u_32_t fl_lflags; 746 u_32_t fl_tag; 747 u_short fl_plen; /* extra data after hlen */ 748 u_short fl_loglevel; /* syslog log level */ 749 char fl_group[FR_GROUPLEN]; 750 u_char fl_hlen; /* length of IP headers saved */ 751 u_char fl_dir; 752 u_char fl_xxx[6]; /* pad */ 753 char fl_ifname[LIFNAMSIZ]; 754 } ipflog_t; 755 756 #ifndef IPF_LOGGING 757 # define IPF_LOGGING 0 758 #endif 759 #ifndef IPF_DEFAULT_PASS 760 # define IPF_DEFAULT_PASS FR_PASS 761 #endif 762 763 #define DEFAULT_IPFLOGSIZE 8192 764 #ifndef IPFILTER_LOGSIZE 765 # define IPFILTER_LOGSIZE DEFAULT_IPFLOGSIZE 766 #else 767 # if IPF_LOGSIZE < DEFAULT_IPFLOGSIZE 768 # error IPFILTER_LOGSISZE too small. Must be >= DEFAULT_IPFLOGSIZE 769 # endif 770 #endif 771 772 #define IPF_OPTCOPY 0x07ff00 /* bit mask of copied options */ 773 774 /* 775 * Device filenames for reading log information. Use ipf on Solaris2 because 776 * ipl is already a name used by something else. 777 */ 778 #ifndef IPL_NAME 779 # if SOLARIS 780 # define IPL_NAME "/dev/ipf" 781 # else 782 # define IPL_NAME "/dev/ipl" 783 # endif 784 #endif 785 /* 786 * Pathnames for various IP Filter control devices. Used by LKM 787 * and userland, so defined here. 788 */ 789 #define IPNAT_NAME "/dev/ipnat" 790 #define IPSTATE_NAME "/dev/ipstate" 791 #define IPAUTH_NAME "/dev/ipauth" 792 #define IPSYNC_NAME "/dev/ipsync" 793 #define IPSCAN_NAME "/dev/ipscan" 794 #define IPLOOKUP_NAME "/dev/iplookup" 795 796 #define IPL_LOGIPF 0 /* Minor device #'s for accessing logs */ 797 #define IPL_LOGNAT 1 798 #define IPL_LOGSTATE 2 799 #define IPL_LOGAUTH 3 800 #define IPL_LOGSYNC 4 801 #define IPL_LOGSCAN 5 802 #define IPL_LOGLOOKUP 6 803 #define IPL_LOGCOUNT 7 804 #define IPL_LOGMAX 7 805 #define IPL_LOGSIZE IPL_LOGMAX + 1 806 #define IPL_LOGALL -1 807 #define IPL_LOGNONE -2 808 809 /* 810 * For SIOCGETFS 811 */ 812 typedef struct friostat { 813 struct filterstats f_st[2]; 814 struct frentry *f_ipf[2][2]; 815 struct frentry *f_acct[2][2]; 816 struct frentry *f_ipf6[2][2]; 817 struct frentry *f_acct6[2][2]; 818 struct frentry *f_auth; 819 struct frgroup *f_groups[IPL_LOGSIZE][2]; 820 u_long f_froute[2]; 821 u_long f_ticks; 822 int f_locks[IPL_LOGMAX]; 823 size_t f_kmutex_sz; 824 size_t f_krwlock_sz; 825 int f_defpass; /* default pass - from fr_pass */ 826 char f_active; /* 1 or 0 - active rule set */ 827 char f_running; /* 1 if running, else 0 */ 828 char f_logging; /* 1 if enabled, else 0 */ 829 char f_version[32]; /* version string */ 830 } friostat_t; 831 832 #define f_fin f_ipf[0] 833 #define f_fin6 f_ipf6[0] 834 #define f_fout f_ipf[1] 835 #define f_fout6 f_ipf6[1] 836 #define f_acctin f_acct[0] 837 #define f_acctin6 f_acct6[0] 838 #define f_acctout f_acct[1] 839 #define f_acctout6 f_acct6[1] 840 841 842 typedef struct optlist { 843 u_short ol_val; 844 int ol_bit; 845 } optlist_t; 846 847 848 /* 849 * Group list structure. 850 */ 851 typedef struct frgroup { 852 struct frgroup *fg_next; 853 struct frentry *fg_head; 854 struct frentry *fg_start; 855 u_32_t fg_flags; 856 int fg_ref; 857 char fg_name[FR_GROUPLEN]; 858 } frgroup_t; 859 860 #define FG_NAME(g) (*(g)->fg_name == '\0' ? "" : (g)->fg_name) 861 862 863 /* 864 * Used by state and NAT tables 865 */ 866 typedef struct icmpinfo { 867 u_short ici_id; 868 u_short ici_seq; 869 u_char ici_type; 870 } icmpinfo_t; 871 872 typedef struct udpinfo { 873 u_short us_sport; 874 u_short us_dport; 875 } udpinfo_t; 876 877 878 typedef struct tcpdata { 879 u_32_t td_end; 880 u_32_t td_maxend; 881 u_32_t td_maxwin; 882 u_32_t td_winscale; 883 u_32_t td_maxseg; 884 int td_winflags; 885 } tcpdata_t; 886 887 #define TCP_WSCALE_MAX 14 888 889 #define TCP_WSCALE_SEEN 0x00000001 890 #define TCP_WSCALE_FIRST 0x00000002 891 892 893 typedef struct tcpinfo { 894 u_short ts_sport; 895 u_short ts_dport; 896 tcpdata_t ts_data[2]; 897 } tcpinfo_t; 898 899 typedef struct greinfo { 900 u_short gs_flags; 901 u_short gs_ptype; 902 u_short gs_call; 903 } greinfo_t; 904 905 typedef struct grehdr { 906 union { 907 struct grebits { 908 u_32_t grub_C:1; 909 u_32_t grub_R:1; 910 u_32_t grub_K:1; 911 u_32_t grub_S:1; 912 u_32_t grub_s:1; 913 u_32_t grub_recur:1; 914 u_32_t grub_A:1; 915 u_32_t grub_flags:3; 916 u_32_t grub_ver:3; 917 u_short grub_ptype; 918 } gru_bits; 919 u_short gru_flags; 920 } gr_un; 921 u_short gr_len; 922 u_short gr_call; 923 } grehdr_t; 924 925 #define gr_bits gr_un.gru_bits 926 #define gr_ptype gr_un.gru_bits.grub_ptype 927 #define gr_C gr_bits.grub_C 928 #define gr_R gr_bits.grub_R 929 #define gr_K gr_bits.grub_K 930 #define gr_S gr_bits.grub_S 931 #define gr_s gr_bits.grub_s 932 #define gr_recur gr_bits.grub_recur 933 #define gr_A gr_bits.grub_A 934 #define gr_flags gr_bits.grub_flags 935 #define gr_ver gr_bits.grub_ver 936 937 938 /* 939 * Timeout tail queue list member 940 */ 941 typedef struct ipftqent { 942 struct ipftqent **tqe_pnext; 943 struct ipftqent *tqe_next; 944 struct ipftq *tqe_ifq; 945 void *tqe_parent; /* pointer back to NAT/state struct */ 946 u_long tqe_die; /* when this entriy is to die */ 947 u_long tqe_touched; 948 int tqe_flags; 949 int tqe_state[2]; /* current state of this entry */ 950 } ipftqent_t; 951 952 #define TQE_RULEBASED 0x00000001 953 954 955 /* 956 * Timeout tail queue head for IPFilter 957 */ 958 typedef struct ipftq { 959 ipfmutex_t ifq_lock; 960 u_int ifq_ttl; 961 ipftqent_t *ifq_head; 962 ipftqent_t **ifq_tail; 963 struct ipftq *ifq_next; 964 struct ipftq **ifq_pnext; 965 int ifq_ref; 966 u_int ifq_flags; 967 } ipftq_t; 968 969 #define IFQF_USER 0x01 /* User defined aging */ 970 971 #define IPF_HZ_MULT 1 972 #define IPF_HZ_DIVIDE 2 /* How many times a second ipfilter */ 973 /* checks its timeout queues. */ 974 #define IPF_TTLVAL(x) (((x) / IPF_HZ_MULT) * IPF_HZ_DIVIDE) 975 976 /* 977 * Structure to define address for pool lookups. 978 */ 979 typedef struct { 980 u_char adf_len; 981 sa_family_t adf_family; 982 i6addr_t adf_addr; 983 } addrfamily_t; 984 985 986 /* 987 * Object structure description. For passing through in ioctls. 988 */ 989 typedef struct ipfobj { 990 u_32_t ipfo_rev; /* IPFilter version number */ 991 u_32_t ipfo_size; /* size of object at ipfo_ptr */ 992 void *ipfo_ptr; /* pointer to object */ 993 int ipfo_type; /* type of object being pointed to */ 994 int ipfo_offset; /* bytes from ipfo_ptr where to start */ 995 u_char ipfo_xxxpad[32]; /* reserved for future use */ 996 } ipfobj_t; 997 998 #define IPFOBJ_FRENTRY 0 /* struct frentry */ 999 #define IPFOBJ_IPFSTAT 1 /* struct friostat */ 1000 #define IPFOBJ_IPFINFO 2 /* struct fr_info */ 1001 #define IPFOBJ_AUTHSTAT 3 /* struct fr_authstat */ 1002 #define IPFOBJ_FRAGSTAT 4 /* struct ipfrstat */ 1003 #define IPFOBJ_IPNAT 5 /* struct ipnat */ 1004 #define IPFOBJ_NATSTAT 6 /* struct natstat */ 1005 #define IPFOBJ_STATESAVE 7 /* struct ipstate_save */ 1006 #define IPFOBJ_NATSAVE 8 /* struct nat_save */ 1007 #define IPFOBJ_NATLOOKUP 9 /* struct natlookup */ 1008 #define IPFOBJ_IPSTATE 10 /* struct ipstate */ 1009 #define IPFOBJ_STATESTAT 11 /* struct ips_stat */ 1010 #define IPFOBJ_FRAUTH 12 /* struct frauth */ 1011 #define IPFOBJ_TUNEABLE 13 /* struct ipftune */ 1012 1013 1014 typedef union ipftunevalptr { 1015 void *ipftp_void; 1016 u_long *ipftp_long; 1017 u_int *ipftp_int; 1018 u_short *ipftp_short; 1019 u_char *ipftp_char; 1020 } ipftunevalptr_t; 1021 1022 typedef struct ipftuneable { 1023 ipftunevalptr_t ipft_una; 1024 char *ipft_name; 1025 u_long ipft_min; 1026 u_long ipft_max; 1027 int ipft_sz; 1028 int ipft_flags; 1029 } ipftuneable_t; 1030 1031 #define ipft_addr ipft_una.ipftp_void 1032 #define ipft_plong ipft_una.ipftp_long 1033 #define ipft_pint ipft_una.ipftp_int 1034 #define ipft_pshort ipft_una.ipftp_short 1035 #define ipft_pchar ipft_una.ipftp_char 1036 1037 #define IPFT_RDONLY 1 /* read-only */ 1038 #define IPFT_WRDISABLED 2 /* write when disabled only */ 1039 1040 typedef union ipftuneval { 1041 u_long ipftu_long; 1042 u_int ipftu_int; 1043 u_short ipftu_short; 1044 u_char ipftu_char; 1045 } ipftuneval_t; 1046 1047 typedef struct ipftune { 1048 void *ipft_cookie; 1049 ipftuneval_t ipft_un; 1050 u_long ipft_min; 1051 u_long ipft_max; 1052 int ipft_sz; 1053 int ipft_flags; 1054 char ipft_name[80]; 1055 } ipftune_t; 1056 1057 #define ipft_vlong ipft_un.ipftu_long 1058 #define ipft_vint ipft_un.ipftu_int 1059 #define ipft_vshort ipft_un.ipftu_short 1060 #define ipft_vchar ipft_un.ipftu_char 1061 1062 1063 /* 1064 ** HPUX Port 1065 */ 1066 #ifdef __hpux 1067 /* HP-UX locking sequence deadlock detection module lock MAJOR ID */ 1068 # define IPF_SMAJ 0 /* temp assignment XXX, not critical */ 1069 #endif 1070 1071 #if !defined(CDEV_MAJOR) && defined (__FreeBSD_version) && \ 1072 (__FreeBSD_version >= 220000) 1073 # define CDEV_MAJOR 79 1074 #endif 1075 1076 /* 1077 * Post NetBSD 1.2 has the PFIL interface for packet filters. This turns 1078 * on those hooks. We don't need any special mods in non-IP Filter code 1079 * with this! 1080 */ 1081 #if (defined(NetBSD) && (NetBSD > 199609) && (NetBSD <= 1991011)) || \ 1082 (defined(NetBSD1_2) && NetBSD1_2 > 1) || \ 1083 (defined(__FreeBSD__) && (__FreeBSD_version >= 500043)) 1084 # if (NetBSD >= 199905) 1085 # define PFIL_HOOKS 1086 # endif 1087 # ifdef PFIL_HOOKS 1088 # define NETBSD_PF 1089 # endif 1090 #endif 1091 1092 #ifndef _KERNEL 1093 extern int fr_check __P((struct ip *, int, void *, int, mb_t **)); 1094 extern int (*fr_checkp) __P((ip_t *, int, void *, int, mb_t **)); 1095 extern int ipf_log __P((void)); 1096 extern struct ifnet *get_unit __P((char *, int)); 1097 extern char *get_ifname __P((struct ifnet *)); 1098 # if defined(__NetBSD__) || defined(__OpenBSD__) || \ 1099 (_BSDI_VERSION >= 199701) || (__FreeBSD_version >= 300000) 1100 extern int frrequest __P((int, u_long, caddr_t, int, int)); 1101 extern int iplioctl __P((int, u_long, caddr_t, int)); 1102 extern int fr_ipftune __P((u_long, char *)); 1103 # else 1104 extern int frrequest __P((int, int, caddr_t, int, int)); 1105 extern int iplioctl __P((int, int, caddr_t, int)); 1106 extern int fr_ipftune __P((int, char *)); 1107 # endif 1108 extern int iplopen __P((dev_t, int)); 1109 extern int iplclose __P((dev_t, int)); 1110 extern void m_freem __P((mb_t *)); 1111 #else /* #ifndef _KERNEL */ 1112 extern void *fr_pullup __P((mb_t *, fr_info_t *, int)); 1113 # if defined(__NetBSD__) && defined(PFIL_HOOKS) 1114 extern void ipfilterattach __P((int)); 1115 # endif 1116 extern int ipl_enable __P((void)); 1117 extern int ipl_disable __P((void)); 1118 # ifdef MENTAT 1119 extern int frrequest __P((int, int, caddr_t, int, int)); 1120 extern int fr_check __P((struct ip *, int, void *, int, struct qif *, 1121 mblk_t **)); 1122 # if SOLARIS 1123 # if SOLARIS2 >= 7 1124 extern int iplioctl __P((dev_t, int, intptr_t, int, cred_t *, int *)); 1125 extern int fr_ipftune __P((int, char *)); 1126 # else 1127 extern int iplioctl __P((dev_t, int, int *, int, cred_t *, int *)); 1128 extern int fr_ipftune __P((int, char *)); 1129 # endif 1130 extern int iplopen __P((dev_t *, int, int, cred_t *)); 1131 extern int iplclose __P((dev_t, int, int, cred_t *)); 1132 extern int iplread __P((dev_t, struct uio *, cred_t *)); 1133 # endif 1134 # ifdef __hpux 1135 extern int iplopen __P((dev_t, int, intptr_t, int)); 1136 extern int iplclose __P((dev_t, int, int)); 1137 extern int iplioctl __P((dev_t, int, caddr_t, int)); 1138 extern int fr_ipftune __P((int, char *)); 1139 extern int iplread __P((dev_t, struct uio *)); 1140 extern int iplselect __P((dev_t, int)); 1141 # endif 1142 extern int ipfsync __P((void)); 1143 extern int fr_qout __P((queue_t *, mblk_t *)); 1144 extern void copyin_mblk __P((mblk_t *, size_t, size_t, char *)); 1145 # else /* MENTAT */ 1146 extern int fr_check __P((struct ip *, int, void *, int, mb_t **)); 1147 extern int (*fr_checkp) __P((ip_t *, int, void *, int, mb_t **)); 1148 extern size_t mbufchainlen __P((mb_t *)); 1149 # ifdef __sgi 1150 # include <sys/cred.h> 1151 extern int frrequest __P((int, int, caddr_t, int, int)); 1152 extern int iplioctl __P((dev_t, int, caddr_t, int, cred_t *, int *)); 1153 extern int fr_ipftune __P((int, char *)); 1154 extern int iplopen __P((dev_t *, int, int, cred_t *)); 1155 extern int iplclose __P((dev_t, int, int, cred_t *)); 1156 extern int iplread __P((dev_t, struct uio *, cred_t *)); 1157 extern int ipfsync __P((void)); 1158 extern int ipfilter_sgi_attach __P((void)); 1159 extern void ipfilter_sgi_detach __P((void)); 1160 extern void ipfilter_sgi_intfsync __P((void)); 1161 # else 1162 # ifdef IPFILTER_LKM 1163 extern int iplidentify __P((char *)); 1164 # endif 1165 # if (_BSDI_VERSION >= 199510) || (__FreeBSD_version >= 220000) || \ 1166 (NetBSD >= 199511) || defined(__OpenBSD__) 1167 # if defined(__NetBSD__) || (_BSDI_VERSION >= 199701) || \ 1168 defined(__OpenBSD__) || (__FreeBSD_version >= 300000) 1169 extern int frrequest __P((int, u_long, caddr_t, int, int)); 1170 # if (__FreeBSD_version >= 500024) 1171 extern int iplioctl __P((dev_t, u_long, caddr_t, int, struct thread *)); 1172 extern int fr_ipftune __P((u_long, char *)); 1173 # else 1174 extern int iplioctl __P((dev_t, u_long, caddr_t, int, struct proc *)); 1175 extern int fr_ipftune __P((u_long, char *)); 1176 # endif /* __FreeBSD_version >= 500024 */ 1177 # else 1178 extern int frrequest __P((int, int, caddr_t, int, int)); 1179 extern int iplioctl __P((dev_t, int, caddr_t, int, struct proc *)); 1180 extern int fr_ipftune __P((int, char *)); 1181 # endif 1182 # if (__FreeBSD_version >= 500024) 1183 extern int iplopen __P((dev_t, int, int, struct thread *)); 1184 extern int iplclose __P((dev_t, int, int, struct thread *)); 1185 # else 1186 extern int iplopen __P((dev_t, int, int, struct proc *)); 1187 extern int iplclose __P((dev_t, int, int, struct proc *)); 1188 # endif /* __FreeBSD_version >= 500024 */ 1189 # else 1190 extern int iplopen __P((dev_t, int)); 1191 extern int iplclose __P((dev_t, int)); 1192 extern int frrequest __P((int, int, caddr_t, int, int)); 1193 extern int iplioctl __P((dev_t, int, caddr_t, int)); 1194 extern int fr_ipftune __P((int, char *)); 1195 # endif /* (_BSDI_VERSION >= 199510) */ 1196 # if BSD >= 199306 1197 extern int iplread __P((dev_t, struct uio *, int)); 1198 # else 1199 extern int iplread __P((dev_t, struct uio *)); 1200 # endif /* BSD >= 199306 */ 1201 # endif /* __ sgi */ 1202 # endif /* MENTAT */ 1203 1204 #endif /* #ifndef _KERNEL */ 1205 1206 extern ipfmutex_t ipl_mutex, ipf_authmx, ipf_rw, ipf_hostmap; 1207 extern ipfmutex_t ipf_timeoutlock; 1208 extern ipfrwlock_t ipf_mutex, ipf_global, ip_poolrw; 1209 extern ipfrwlock_t ipf_frag, ipf_state, ipf_nat, ipf_natfrag, ipf_auth; 1210 1211 extern char *memstr __P((char *, char *, int, int)); 1212 extern int count4bits __P((u_32_t)); 1213 #ifdef USE_INET6 1214 extern int count6bits __P((u_32_t *)); 1215 #endif 1216 extern char *getifname __P((struct ifnet *)); 1217 extern int iplattach __P((void)); 1218 extern int ipldetach __P((void)); 1219 # if defined(__NetBSD__) || defined(__OpenBSD__) 1220 extern INLINE int fr_ioctlswitch __P((int, void *, u_long, int)); 1221 #else 1222 extern INLINE int fr_ioctlswitch __P((int, void *, int, int)); 1223 #endif 1224 extern u_short ipf_cksum __P((u_short *, int)); 1225 extern int copyinptr __P((void *, void *, size_t)); 1226 extern int copyoutptr __P((void *, void *, size_t)); 1227 extern int fr_inobj __P((void *, void *, int)); 1228 extern int fr_outobj __P((void *, void *, int)); 1229 extern int fr_send_reset __P((fr_info_t *)); 1230 extern int fr_send_icmp_err __P((int, fr_info_t *, int)); 1231 extern void fr_resolvdest __P((struct frdest *, int)); 1232 extern int fr_resolvefunc __P((void *)); 1233 extern int fr_fastroute __P((mb_t *, mb_t **, fr_info_t *, frdest_t *)); 1234 extern int ppsratecheck __P((struct timeval *, int *, int)); 1235 extern ipftq_t *fr_addtimeoutqueue __P((ipftq_t **, u_int)); 1236 extern void fr_deletetimeoutqueue __P((ipftq_t *)); 1237 extern void fr_movequeue __P((ipftqent_t *, ipftq_t *, ipftq_t *)); 1238 extern void fr_queuefront __P((ipftqent_t *)); 1239 extern void fr_queueback __P((ipftqent_t *)); 1240 extern void fr_checkv4sum __P((fr_info_t *)); 1241 extern int fr_checkl4sum __P((fr_info_t *)); 1242 extern int fr_ifpfillv4addr __P((int, struct sockaddr_in *, 1243 struct sockaddr_in *, struct in_addr *, 1244 struct in_addr *)); 1245 extern int fr_coalesce __P((fr_info_t *)); 1246 #ifdef USE_INET6 1247 extern void fr_checkv6sum __P((fr_info_t *)); 1248 extern int fr_ifpfillv6addr __P((int, struct sockaddr_in6 *, 1249 struct sockaddr_in6 *, struct in_addr *, 1250 struct in_addr *)); 1251 #endif 1252 1253 extern int frflush __P((minor_t, int, int)); 1254 extern void frsync __P((void)); 1255 extern frgroup_t *fr_addgroup __P((char *, void *, u_32_t, minor_t, int)); 1256 extern int fr_derefrule __P((frentry_t **)); 1257 extern void fr_delgroup __P((char *, minor_t, int)); 1258 extern frgroup_t *fr_findgroup __P((char *, minor_t, int, frgroup_t ***)); 1259 1260 extern int fr_loginit __P((void)); 1261 extern int ipflog_clear __P((minor_t)); 1262 extern int ipflog_read __P((minor_t, struct uio *)); 1263 extern int ipflog __P((fr_info_t *, u_int)); 1264 extern int ipllog __P((int, fr_info_t *, void **, size_t *, int *, int)); 1265 extern void fr_logunload __P((void)); 1266 1267 extern frentry_t *fr_acctpkt __P((fr_info_t *, u_32_t *)); 1268 extern int fr_copytolog __P((int, char *, int)); 1269 extern u_short fr_cksum __P((mb_t *, ip_t *, int, void *)); 1270 extern frentry_t *fr_dolog __P((fr_info_t *, u_32_t *)); 1271 extern frentry_t *fr_dstgrpmap __P((fr_info_t *, u_32_t *)); 1272 extern void fr_fixskip __P((frentry_t **, frentry_t *, int)); 1273 extern void fr_forgetifp __P((void *)); 1274 extern frentry_t *fr_getrulen __P((int, char *, u_32_t)); 1275 extern void fr_getstat __P((struct friostat *)); 1276 extern int fr_ifpaddr __P((int, int, void *, 1277 struct in_addr *, struct in_addr *)); 1278 extern int fr_lock __P((caddr_t, int *)); 1279 extern int fr_makefrip __P((int, ip_t *, fr_info_t *)); 1280 extern int fr_matchtag __P((ipftag_t *, ipftag_t *)); 1281 extern int fr_matchicmpqueryreply __P((int, icmpinfo_t *, 1282 struct icmp *, int)); 1283 extern u_32_t fr_newisn __P((fr_info_t *)); 1284 extern INLINE u_short fr_nextipid __P((fr_info_t *)); 1285 extern int fr_rulen __P((int, frentry_t *)); 1286 extern int fr_scanlist __P((fr_info_t *, u_32_t)); 1287 extern frentry_t *fr_srcgrpmap __P((fr_info_t *, u_32_t *)); 1288 extern int fr_tcpudpchk __P((fr_info_t *, frtuc_t *)); 1289 extern int fr_verifysrc __P((fr_info_t *fin)); 1290 1291 extern int fr_unreach; 1292 extern int fr_running; 1293 extern u_long fr_frouteok[2]; 1294 extern int fr_pass; 1295 extern int fr_flags; 1296 extern int fr_active; 1297 extern int fr_chksrc; 1298 extern int fr_minttl; 1299 extern int fr_refcnt; 1300 extern int fr_control_forwarding; 1301 extern int fr_update_ipid; 1302 extern int nat_logging; 1303 extern int ipstate_logging; 1304 extern int ipl_suppress; 1305 extern int ipl_buffer_sz; 1306 extern int ipl_logmax; 1307 extern int ipl_logall; 1308 extern u_long fr_ticks; 1309 extern fr_info_t frcache[2][8]; 1310 extern char ipfilter_version[]; 1311 extern iplog_t **iplh[IPL_LOGMAX+1], *iplt[IPL_LOGMAX+1]; 1312 extern int iplused[IPL_LOGMAX + 1]; 1313 extern struct frentry *ipfilter[2][2], *ipacct[2][2]; 1314 #ifdef USE_INET6 1315 extern struct frentry *ipfilter6[2][2], *ipacct6[2][2]; 1316 extern int icmptoicmp6types[ICMP_MAXTYPE+1]; 1317 extern int icmptoicmp6unreach[ICMP_MAX_UNREACH]; 1318 extern int icmpreplytype6[ICMP6_MAXTYPE + 1]; 1319 #endif 1320 extern int icmpreplytype4[ICMP_MAXTYPE + 1]; 1321 extern struct frgroup *ipfgroups[IPL_LOGSIZE][2]; 1322 extern struct filterstats frstats[]; 1323 extern int icmpreplytype4[ICMP_MAXTYPE + 1]; 1324 extern struct frgroup *ipfgroups[IPL_LOGSIZE][2]; 1325 extern struct filterstats frstats[]; 1326 extern frentry_t *ipfrule_match __P((fr_info_t *)); 1327 extern u_char ipf_iss_secret[32]; 1328 1329 1330 #endif /* __IP_FIL_H__ */ 1331