ip_fil.h revision 1.1
1 /* $NetBSD: ip_fil.h,v 1.1 2012/03/23 20:36:54 christos Exp $ */ 2 3 /* 4 * Copyright (C) 2012 by Darren Reed. 5 * 6 * See the IPFILTER.LICENCE file for details on licencing. 7 * 8 * @(#)ip_fil.h 1.35 6/5/96 9 * Id 10 */ 11 12 #ifndef __IP_FIL_H__ 13 #define __IP_FIL_H__ 14 15 #include "netinet/ip_compat.h" 16 #include "netinet/ipf_rb.h" 17 #if NETBSD_GE_REV(104040000) 18 # include <sys/callout.h> 19 #endif 20 #if defined(BSD) && defined(_KERNEL) 21 # if NETBSD_LT_REV(399000000) || defined(__osf__) || FREEBSD_LT_REV(500043) 22 # include <sys/select.h> 23 # else 24 # include <sys/selinfo.h> 25 # endif 26 #endif 27 28 #if !defined(linux) || !defined(_KERNEL) 29 # include <netinet/in.h> 30 #endif 31 32 #ifndef SOLARIS 33 # define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4))) 34 #endif 35 36 #ifndef __P 37 # ifdef __STDC__ 38 # define __P(x) x 39 # else 40 # define __P(x) () 41 # endif 42 #endif 43 44 #if defined(__STDC__) || defined(__GNUC__) || defined(_AIX51) 45 # define SIOCADAFR _IOW('r', 60, struct ipfobj) 46 # define SIOCRMAFR _IOW('r', 61, struct ipfobj) 47 # define SIOCSETFF _IOW('r', 62, u_int) 48 # define SIOCGETFF _IOR('r', 63, u_int) 49 # define SIOCGETFS _IOWR('r', 64, struct ipfobj) 50 # define SIOCIPFFL _IOWR('r', 65, int) 51 # define SIOCIPFFB _IOR('r', 66, int) 52 # define SIOCADIFR _IOW('r', 67, struct ipfobj) 53 # define SIOCRMIFR _IOW('r', 68, struct ipfobj) 54 # define SIOCSWAPA _IOR('r', 69, u_int) 55 # define SIOCINAFR _IOW('r', 70, struct ipfobj) 56 # define SIOCINIFR _IOW('r', 71, struct ipfobj) 57 # define SIOCFRENB _IOW('r', 72, u_int) 58 # define SIOCFRSYN _IOW('r', 73, u_int) 59 # define SIOCFRZST _IOWR('r', 74, struct ipfobj) 60 # define SIOCZRLST _IOWR('r', 75, struct ipfobj) 61 # define SIOCAUTHW _IOWR('r', 76, struct ipfobj) 62 # define SIOCAUTHR _IOWR('r', 77, struct ipfobj) 63 # define SIOCSTAT1 _IOWR('r', 78, struct ipfobj) 64 # define SIOCSTLCK _IOWR('r', 79, u_int) 65 # define SIOCSTPUT _IOWR('r', 80, struct ipfobj) 66 # define SIOCSTGET _IOWR('r', 81, struct ipfobj) 67 # define SIOCSTGSZ _IOWR('r', 82, struct ipfobj) 68 # define SIOCSTAT2 _IOWR('r', 83, struct ipfobj) 69 # define SIOCSETLG _IOWR('r', 84, int) 70 # define SIOCGETLG _IOWR('r', 85, int) 71 # define SIOCFUNCL _IOWR('r', 86, struct ipfunc_resolve) 72 # define SIOCIPFGETNEXT _IOWR('r', 87, struct ipfobj) 73 # define SIOCIPFGET _IOWR('r', 88, struct ipfobj) 74 # define SIOCIPFSET _IOWR('r', 89, struct ipfobj) 75 # define SIOCIPFL6 _IOWR('r', 90, int) 76 # define SIOCIPFITER _IOWR('r', 91, struct ipfobj) 77 # define SIOCGENITER _IOWR('r', 92, struct ipfobj) 78 # define SIOCGTABL _IOWR('r', 93, struct ipfobj) 79 # define SIOCIPFDELTOK _IOWR('r', 94, int) 80 # define SIOCLOOKUPITER _IOWR('r', 95, struct ipfobj) 81 # define SIOCGTQTAB _IOWR('r', 96, struct ipfobj) 82 # define SIOCMATCHFLUSH _IOWR('r', 97, struct ipfobj) 83 # define SIOCIPFINTERROR _IOR('r', 98, int) 84 #else 85 # define SIOCADAFR _IOW(r, 60, struct ipfobj) 86 # define SIOCRMAFR _IOW(r, 61, struct ipfobj) 87 # define SIOCSETFF _IOW(r, 62, u_int) 88 # define SIOCGETFF _IOR(r, 63, u_int) 89 # define SIOCGETFS _IOWR(r, 64, struct ipfobj) 90 # define SIOCIPFFL _IOWR(r, 65, int) 91 # define SIOCIPFFB _IOR(r, 66, int) 92 # define SIOCADIFR _IOW(r, 67, struct ipfobj) 93 # define SIOCRMIFR _IOW(r, 68, struct ipfobj) 94 # define SIOCSWAPA _IOR(r, 69, u_int) 95 # define SIOCINAFR _IOW(r, 70, struct ipfobj) 96 # define SIOCINIFR _IOW(r, 71, struct ipfobj) 97 # define SIOCFRENB _IOW(r, 72, u_int) 98 # define SIOCFRSYN _IOW(r, 73, u_int) 99 # define SIOCFRZST _IOWR(r, 74, struct ipfobj) 100 # define SIOCZRLST _IOWR(r, 75, struct ipfobj) 101 # define SIOCAUTHW _IOWR(r, 76, struct ipfobj) 102 # define SIOCAUTHR _IOWR(r, 77, struct ipfobj) 103 # define SIOCSTAT1 _IOWR(r, 78, struct ipfobj) 104 # define SIOCSTLCK _IOWR(r, 79, u_int) 105 # define SIOCSTPUT _IOWR(r, 80, struct ipfobj) 106 # define SIOCSTGET _IOWR(r, 81, struct ipfobj) 107 # define SIOCSTGSZ _IOWR(r, 82, struct ipfobj) 108 # define SIOCSTAT2 _IOWR(r, 83, struct ipfobj) 109 # define SIOCSETLG _IOWR(r, 84, int) 110 # define SIOCGETLG _IOWR(r, 85, int) 111 # define SIOCFUNCL _IOWR(r, 86, struct ipfunc_resolve) 112 # define SIOCIPFGETNEXT _IOWR(r, 87, struct ipfobj) 113 # define SIOCIPFGET _IOWR(r, 88, struct ipfobj) 114 # define SIOCIPFSET _IOWR(r, 89, struct ipfobj) 115 # define SIOCIPFL6 _IOWR(r, 90, int) 116 # define SIOCIPFITER _IOWR(r, 91, struct ipfobj) 117 # define SIOCGENITER _IOWR(r, 92, struct ipfobj) 118 # define SIOCGTABL _IOWR(r, 93, struct ipfobj) 119 # define SIOCIPFDELTOK _IOWR(r, 94, int) 120 # define SIOCLOOKUPITER _IOWR(r, 95, struct ipfobj) 121 # define SIOCGTQTAB _IOWR(r, 96, struct ipfobj) 122 # define SIOCMATCHFLUSH _IOWR(r, 97, struct ipfobj) 123 # define SIOCIPFINTERROR _IOR(r, 98, int) 124 #endif 125 #define SIOCADDFR SIOCADAFR 126 #define SIOCDELFR SIOCRMAFR 127 #define SIOCINSFR SIOCINAFR 128 #define SIOCATHST SIOCSTAT1 129 #define SIOCGFRST SIOCSTAT2 130 131 132 struct ipscan; 133 struct ifnet; 134 struct ipf_main_softc_s; 135 136 typedef int (* lookupfunc_t) __P((struct ipf_main_softc_s *, void *, 137 int, void *, u_int)); 138 139 /* 140 * i6addr is used as a container for both IPv4 and IPv6 addresses, as well 141 * as other types of objects, depending on its qualifier. 142 */ 143 #ifdef USE_INET6 144 typedef union i6addr { 145 u_32_t i6[4]; 146 struct in_addr in4; 147 struct in6_addr in6; 148 void *vptr[2]; 149 lookupfunc_t lptr[2]; 150 struct { 151 u_short type; 152 u_short subtype; 153 int name; 154 } i6un; 155 } i6addr_t; 156 #else 157 typedef union i6addr { 158 u_32_t i6[4]; 159 struct in_addr in4; 160 void *vptr[2]; 161 lookupfunc_t lptr[2]; 162 struct { 163 u_short type; 164 u_short subtype; 165 int name; 166 } i6un; 167 } i6addr_t; 168 #endif 169 170 #define in4_addr in4.s_addr 171 #define iplookupnum i6[1] 172 #define iplookupname i6un.name 173 #define iplookuptype i6un.type 174 #define iplookupsubtype i6un.subtype 175 /* 176 * NOTE: These DO overlap the above on 64bit systems and this IS recognised. 177 */ 178 #define iplookupptr vptr[0] 179 #define iplookupfunc lptr[1] 180 181 #define I60(x) (((u_32_t *)(x))[0]) 182 #define I61(x) (((u_32_t *)(x))[1]) 183 #define I62(x) (((u_32_t *)(x))[2]) 184 #define I63(x) (((u_32_t *)(x))[3]) 185 #define HI60(x) ntohl(((u_32_t *)(x))[0]) 186 #define HI61(x) ntohl(((u_32_t *)(x))[1]) 187 #define HI62(x) ntohl(((u_32_t *)(x))[2]) 188 #define HI63(x) ntohl(((u_32_t *)(x))[3]) 189 190 #define IP6_EQ(a,b) ((I63(a) == I63(b)) && (I62(a) == I62(b)) && \ 191 (I61(a) == I61(b)) && (I60(a) == I60(b))) 192 #define IP6_NEQ(a,b) ((I63(a) != I63(b)) || (I62(a) != I62(b)) || \ 193 (I61(a) != I61(b)) || (I60(a) != I60(b))) 194 #define IP6_ISZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) == 0) 195 #define IP6_NOTZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) != 0) 196 #define IP6_ISONES(a) ((I63(a) == 0xffffffff) && (I62(a) == 0xffffffff) && \ 197 (I61(a) == 0xffffffff) && (I60(a) == 0xffffffff)) 198 #define IP6_GT(a,b) (ntohl(HI60(a)) > ntohl(HI60(b)) || \ 199 (HI60(a) == HI60(b) && \ 200 (ntohl(HI61(a)) > ntohl(HI61(b)) || \ 201 (HI61(a) == HI61(b) && \ 202 (ntohl(HI62(a)) > ntohl(HI62(b)) || \ 203 (HI62(a) == HI62(b) && \ 204 ntohl(HI63(a)) > ntohl(HI63(b)))))))) 205 #define IP6_LT(a,b) (ntohl(HI60(a)) < ntohl(HI60(b)) || \ 206 (HI60(a) == HI60(b) && \ 207 (ntohl(HI61(a)) < ntohl(HI61(b)) || \ 208 (HI61(a) == HI61(b) && \ 209 (ntohl(HI62(a)) < ntohl(HI62(b)) || \ 210 (HI62(a) == HI62(b) && \ 211 ntohl(HI63(a)) < ntohl(HI63(b)))))))) 212 #define NLADD(n,x) htonl(ntohl(n) + (x)) 213 #define IP6_INC(a) \ 214 { u_32_t *_i6 = (u_32_t *)(a); \ 215 _i6[3] = NLADD(_i6[3], 1); \ 216 if (_i6[3] == 0) { \ 217 _i6[2] = NLADD(_i6[2], 1); \ 218 if (_i6[2] == 0) { \ 219 _i6[1] = NLADD(_i6[1], 1); \ 220 if (_i6[1] == 0) { \ 221 _i6[0] = NLADD(_i6[0], 1); \ 222 } \ 223 } \ 224 } \ 225 } 226 #define IP6_ADD(a,x,d) \ 227 { i6addr_t *_s = (i6addr_t *)(a); \ 228 i6addr_t *_d = (i6addr_t *)(d); \ 229 _d->i6[0] = NLADD(_s->i6[0], x); \ 230 if (ntohl(_d->i6[0]) < ntohl(_s->i6[0])) { \ 231 _d->i6[1] = NLADD(_d->i6[1], 1); \ 232 if (ntohl(_d->i6[1]) < ntohl(_s->i6[1])) { \ 233 _d->i6[2] = NLADD(_d->i6[2], 1); \ 234 if (ntohl(_d->i6[2]) < ntohl(_s->i6[2])) { \ 235 _d->i6[3] = NLADD(_d->i6[3], 1); \ 236 } \ 237 } \ 238 } \ 239 } 240 #define IP6_AND(a,b,d) { i6addr_t *_s1 = (i6addr_t *)(a); \ 241 i6addr_t *_s2 = (i6addr_t *)(b); \ 242 i6addr_t *_d = (i6addr_t *)(d); \ 243 _d->i6[0] = _s1->i6[0] & _s2->i6[0]; \ 244 _d->i6[1] = _s1->i6[1] & _s2->i6[1]; \ 245 _d->i6[2] = _s1->i6[2] & _s2->i6[2]; \ 246 _d->i6[3] = _s1->i6[3] & _s2->i6[3]; \ 247 } 248 #define IP6_ANDASSIGN(a,m) \ 249 { i6addr_t *_d = (i6addr_t *)(a); \ 250 i6addr_t *_m = (i6addr_t *)(m); \ 251 _d->i6[0] &= _m->i6[0]; \ 252 _d->i6[1] &= _m->i6[1]; \ 253 _d->i6[2] &= _m->i6[2]; \ 254 _d->i6[3] &= _m->i6[3]; \ 255 } 256 #define IP6_MASKEQ(a,m,b) \ 257 (((I60(a) & I60(m)) == I60(b)) && \ 258 ((I61(a) & I61(m)) == I61(b)) && \ 259 ((I62(a) & I62(m)) == I62(b)) && \ 260 ((I63(a) & I63(m)) == I63(b))) 261 #define IP6_MASKNEQ(a,m,b) \ 262 (((I60(a) & I60(m)) != I60(b)) || \ 263 ((I61(a) & I61(m)) != I61(b)) || \ 264 ((I62(a) & I62(m)) != I62(b)) || \ 265 ((I63(a) & I63(m)) != I63(b))) 266 #define IP6_MERGE(a,b,c) \ 267 { i6addr_t *_d, *_s1, *_s2; \ 268 _d = (i6addr_t *)(a); \ 269 _s1 = (i6addr_t *)(b); \ 270 _s2 = (i6addr_t *)(c); \ 271 _d->i6[0] |= _s1->i6[0] & ~_s2->i6[0]; \ 272 _d->i6[1] |= _s1->i6[1] & ~_s2->i6[1]; \ 273 _d->i6[2] |= _s1->i6[2] & ~_s2->i6[2]; \ 274 _d->i6[3] |= _s1->i6[3] & ~_s2->i6[3]; \ 275 } 276 #define IP6_MASK(a,b,c) \ 277 { i6addr_t *_d, *_s1, *_s2; \ 278 _d = (i6addr_t *)(a); \ 279 _s1 = (i6addr_t *)(b); \ 280 _s2 = (i6addr_t *)(c); \ 281 _d->i6[0] = _s1->i6[0] & ~_s2->i6[0]; \ 282 _d->i6[1] = _s1->i6[1] & ~_s2->i6[1]; \ 283 _d->i6[2] = _s1->i6[2] & ~_s2->i6[2]; \ 284 _d->i6[3] = _s1->i6[3] & ~_s2->i6[3]; \ 285 } 286 typedef union ipso_u { 287 u_short ipso_ripso[2]; 288 u_32_t ipso_doi; 289 } ipso_t; 290 291 typedef struct fr_ip { 292 u_32_t fi_v:4; /* IP version */ 293 u_32_t fi_xx:4; /* spare */ 294 u_32_t fi_tos:8; /* IP packet TOS */ 295 u_32_t fi_ttl:8; /* IP packet TTL */ 296 u_32_t fi_p:8; /* IP packet protocol */ 297 u_32_t fi_optmsk; /* bitmask composed from IP options */ 298 i6addr_t fi_src; /* source address from packet */ 299 i6addr_t fi_dst; /* destination address from packet */ 300 ipso_t fi_ipso; /* IP security options */ 301 u_32_t fi_flx; /* packet flags */ 302 u_32_t fi_tcpmsk; /* TCP options set/reset */ 303 u_32_t fi_ports[2]; /* TCP ports */ 304 u_char fi_tcpf; /* TCP flags */ 305 u_char fi_sensitivity; 306 u_char fi_xxx[2]; /* pad */ 307 } fr_ip_t; 308 309 /* 310 * For use in fi_flx 311 */ 312 #define FI_TCPUDP 0x0001 /* TCP/UCP implied comparison*/ 313 #define FI_OPTIONS 0x0002 314 #define FI_FRAG 0x0004 315 #define FI_SHORT 0x0008 316 #define FI_NATED 0x0010 317 #define FI_MULTICAST 0x0020 318 #define FI_BROADCAST 0x0040 319 #define FI_MBCAST 0x0080 320 #define FI_STATE 0x0100 321 #define FI_BADNAT 0x0200 322 #define FI_BAD 0x0400 323 #define FI_OOW 0x0800 /* Out of state window, else match */ 324 #define FI_ICMPERR 0x1000 325 #define FI_FRAGBODY 0x2000 326 #define FI_BADSRC 0x4000 327 #define FI_LOWTTL 0x8000 328 #define FI_CMP 0x5cfe3 /* Not FI_FRAG,FI_NATED,FI_FRAGTAIL */ 329 #define FI_ICMPCMP 0x0003 /* Flags we can check for ICMP error packets */ 330 #define FI_WITH 0x5effe /* Not FI_TCPUDP */ 331 #define FI_V6EXTHDR 0x10000 332 #define FI_COALESCE 0x20000 333 #define FI_NEWNAT 0x40000 334 #define FI_ICMPQUERY 0x80000 335 #define FI_ENCAP 0x100000 /* encap/decap with NAT */ 336 #define FI_AH 0x200000 /* AH header present */ 337 #define FI_NOCKSUM 0x20000000 /* don't do a L4 checksum validation */ 338 #define FI_IGNORE 0x80000000 339 340 #define fi_secmsk fi_ipso.ipso_ripso[0] 341 #define fi_auth fi_ipso.ipso_ripso[1] 342 #define fi_doi fi_ipso.ipso_doi 343 #define fi_saddr fi_src.in4.s_addr 344 #define fi_daddr fi_dst.in4.s_addr 345 #define fi_srcnum fi_src.iplookupnum 346 #define fi_dstnum fi_dst.iplookupnum 347 #define fi_srcname fi_src.iplookupname 348 #define fi_dstname fi_dst.iplookupname 349 #define fi_srctype fi_src.iplookuptype 350 #define fi_dsttype fi_dst.iplookuptype 351 #define fi_srcsubtype fi_src.iplookupsubtype 352 #define fi_dstsubtype fi_dst.iplookupsubtype 353 #define fi_srcptr fi_src.iplookupptr 354 #define fi_dstptr fi_dst.iplookupptr 355 #define fi_srcfunc fi_src.iplookupfunc 356 #define fi_dstfunc fi_dst.iplookupfunc 357 358 359 /* 360 * These are both used by the state and NAT code to indicate that one port or 361 * the other should be treated as a wildcard. 362 * NOTE: When updating, check bit masks in ip_state.h and update there too. 363 */ 364 #define SI_W_SPORT 0x00000100 365 #define SI_W_DPORT 0x00000200 366 #define SI_WILDP (SI_W_SPORT|SI_W_DPORT) 367 #define SI_W_SADDR 0x00000400 368 #define SI_W_DADDR 0x00000800 369 #define SI_WILDA (SI_W_SADDR|SI_W_DADDR) 370 #define SI_NEWFR 0x00001000 371 #define SI_CLONE 0x00002000 372 #define SI_CLONED 0x00004000 373 #define SI_NEWCLONE 0x00008000 374 375 typedef struct { 376 u_short fda_ports[2]; 377 u_char fda_tcpf; /* TCP header flags (SYN, ACK, etc) */ 378 } frdat_t; 379 380 typedef enum fr_breasons_e { 381 FRB_LOGFAIL = 1, 382 FRB_PPSRATE, 383 FRB_JUMBO, 384 FRB_MAKEFRIP, 385 FRB_STATEADD, 386 FRB_UPDATEIPID, 387 FRB_LOGFAIL2, 388 FRB_DECAPFRIP, 389 FRB_AUTHNEW, 390 FRB_AUTHCAPTURE, 391 FRB_COALESCE, 392 FRB_PULLUP, 393 FRB_AUTHFEEDBACK, 394 FRB_BADFRAG, 395 FRB_NATV4OUT, 396 FRB_NATV4IN, 397 FRB_NATV6OUT, 398 FRB_NATV6IN 399 } fr_breason_t; 400 401 typedef struct fr_info { 402 void *fin_main_soft; 403 void *fin_ifp; /* interface packet is `on' */ 404 struct frentry *fin_fr; /* last matching rule */ 405 int fin_out; /* in or out ? 1 == out, 0 == in */ 406 fr_ip_t fin_fi; /* IP Packet summary */ 407 frdat_t fin_dat; /* TCP/UDP ports, ICMP code/type */ 408 int fin_dlen; /* length of data portion of packet */ 409 int fin_plen; 410 u_32_t fin_rule; /* rule # last matched */ 411 u_short fin_hlen; /* length of IP header in bytes */ 412 char fin_group[FR_GROUPLEN]; /* group number, -1 for none */ 413 void *fin_dp; /* start of data past IP header */ 414 /* 415 * Fields after fin_dp aren't used for compression of log records. 416 * fin_fi contains the IP version (fin_family) 417 * fin_rule isn't included because adding a new rule can change it but 418 * not change fin_fr. fin_rule is the rule number reported. 419 * It isn't necessary to include fin_crc because that is checked 420 * for explicitly, before calling bcmp. 421 */ 422 u_32_t fin_crc; /* Simple calculation for logging */ 423 int fin_family; /* AF_INET, etc. */ 424 int fin_icode; /* ICMP error to return */ 425 int fin_mtu; /* MTU input for ICMP need-frag */ 426 int fin_rev; /* state only: 1 = reverse */ 427 int fin_ipoff; /* # bytes from buffer start to hdr */ 428 u_32_t fin_id; /* IP packet id field */ 429 u_short fin_l4hlen; /* length of L4 header, if known */ 430 u_short fin_off; 431 int fin_depth; /* Group nesting depth */ 432 int fin_error; /* Error code to return */ 433 int fin_cksum; /* -1 = bad, 1 = good, 0 = not done */ 434 fr_breason_t fin_reason; /* why auto blocked */ 435 u_int fin_pktnum; 436 void *fin_nattag; 437 struct frdest *fin_dif; 438 struct frdest *fin_tif; 439 union { 440 ip_t *fip_ip; 441 #ifdef USE_INET6 442 ip6_t *fip_ip6; 443 #endif 444 } fin_ipu; 445 mb_t **fin_mp; /* pointer to pointer to mbuf */ 446 mb_t *fin_m; /* pointer to mbuf */ 447 #ifdef MENTAT 448 mb_t *fin_qfm; /* pointer to mblk where pkt starts */ 449 void *fin_qpi; 450 char fin_ifname[LIFNAMSIZ]; 451 #endif 452 #ifdef __sgi 453 void *fin_hbuf; 454 #endif 455 void *fin_fraghdr; /* pointer to start of ipv6 frag hdr */ 456 } fr_info_t; 457 458 #define fin_ip fin_ipu.fip_ip 459 #define fin_ip6 fin_ipu.fip_ip6 460 #define fin_v fin_fi.fi_v 461 #define fin_p fin_fi.fi_p 462 #define fin_flx fin_fi.fi_flx 463 #define fin_optmsk fin_fi.fi_optmsk 464 #define fin_secmsk fin_fi.fi_secmsk 465 #define fin_doi fin_fi.fi_doi 466 #define fin_auth fin_fi.fi_auth 467 #define fin_src fin_fi.fi_src.in4 468 #define fin_saddr fin_fi.fi_saddr 469 #define fin_dst fin_fi.fi_dst.in4 470 #define fin_daddr fin_fi.fi_daddr 471 #define fin_data fin_fi.fi_ports 472 #define fin_sport fin_fi.fi_ports[0] 473 #define fin_dport fin_fi.fi_ports[1] 474 #define fin_tcpf fin_fi.fi_tcpf 475 #define fin_src6 fin_fi.fi_src 476 #define fin_dst6 fin_fi.fi_dst 477 #define fin_srcip6 fin_fi.fi_src.in6 478 #define fin_dstip6 fin_fi.fi_dst.in6 479 480 #define IPF_IN 0 481 #define IPF_OUT 1 482 483 typedef struct frentry *(*ipfunc_t) __P((fr_info_t *, u_32_t *)); 484 typedef int (*ipfuncinit_t) __P((struct ipf_main_softc_s *, struct frentry *)); 485 486 typedef struct ipfunc_resolve { 487 char ipfu_name[32]; 488 ipfunc_t ipfu_addr; 489 ipfuncinit_t ipfu_init; 490 ipfuncinit_t ipfu_fini; 491 } ipfunc_resolve_t; 492 493 /* 494 * Size for compares on fr_info structures 495 */ 496 #define FI_CSIZE offsetof(fr_info_t, fin_icode) 497 #define FI_LCSIZE offsetof(fr_info_t, fin_dp) 498 499 /* 500 * Size for copying cache fr_info structure 501 */ 502 #define FI_COPYSIZE offsetof(fr_info_t, fin_dp) 503 504 /* 505 * Structure for holding IPFilter's tag information 506 */ 507 #define IPFTAG_LEN 16 508 typedef struct { 509 union { 510 u_32_t iptu_num[4]; 511 char iptu_tag[IPFTAG_LEN]; 512 } ipt_un; 513 int ipt_not; 514 } ipftag_t; 515 516 #define ipt_tag ipt_un.iptu_tag 517 #define ipt_num ipt_un.iptu_num 518 519 /* 520 * Structure to define address for pool lookups. 521 */ 522 typedef struct { 523 u_char adf_len; 524 sa_family_t adf_family; 525 u_char adf_xxx[2]; 526 i6addr_t adf_addr; 527 } addrfamily_t; 528 529 RBI_LINK(ipf_rb, host_node_s); 530 531 typedef struct host_node_s { 532 RBI_FIELD(ipf_rb) hn_entry; 533 addrfamily_t hn_addr; 534 int hn_active; 535 } host_node_t; 536 537 typedef RBI_HEAD(ipf_rb, host_node_s) ipf_rb_head_t; 538 539 typedef struct host_track_s { 540 ipf_rb_head_t ht_root; 541 int ht_max_nodes; 542 int ht_max_per_node; 543 int ht_netmask; 544 int ht_cur_nodes; 545 } host_track_t; 546 547 548 typedef enum fr_dtypes_e { 549 FRD_NORMAL = 0, 550 FRD_DSTLIST 551 } fr_dtypes_t; 552 /* 553 * This structure is used to hold information about the next hop for where 554 * to forward a packet. 555 */ 556 typedef struct frdest { 557 void *fd_ptr; 558 addrfamily_t fd_addr; 559 fr_dtypes_t fd_type; 560 int fd_name; 561 int fd_local; 562 } frdest_t; 563 564 #define fd_ip6 fd_addr.adf_addr 565 #define fd_ip fd_ip6.in4 566 567 568 typedef enum fr_ctypes_e { 569 FR_NONE = 0, 570 FR_EQUAL, 571 FR_NEQUAL, 572 FR_LESST, 573 FR_GREATERT, 574 FR_LESSTE, 575 FR_GREATERTE, 576 FR_OUTRANGE, 577 FR_INRANGE, 578 FR_INCRANGE 579 } fr_ctypes_t; 580 581 /* 582 * This structure holds information about a port comparison. 583 */ 584 typedef struct frpcmp { 585 fr_ctypes_t frp_cmp; /* data for port comparisons */ 586 u_32_t frp_port; /* top port for <> and >< */ 587 u_32_t frp_top; /* top port for <> and >< */ 588 } frpcmp_t; 589 590 591 /* 592 * Structure containing all the relevant TCP things that can be checked in 593 * a filter rule. 594 */ 595 typedef struct frtuc { 596 u_char ftu_tcpfm; /* tcp flags mask */ 597 u_char ftu_tcpf; /* tcp flags */ 598 frpcmp_t ftu_src; 599 frpcmp_t ftu_dst; 600 } frtuc_t; 601 602 #define ftu_scmp ftu_src.frp_cmp 603 #define ftu_dcmp ftu_dst.frp_cmp 604 #define ftu_sport ftu_src.frp_port 605 #define ftu_dport ftu_dst.frp_port 606 #define ftu_stop ftu_src.frp_top 607 #define ftu_dtop ftu_dst.frp_top 608 609 #define FR_TCPFMAX 0x3f 610 611 typedef enum fr_atypes_e { 612 FRI_NONE = -1, /* For LHS of NAT */ 613 FRI_NORMAL = 0, /* Normal address */ 614 FRI_DYNAMIC, /* dynamic address */ 615 FRI_LOOKUP, /* address is a pool # */ 616 FRI_RANGE, /* address/mask is a range */ 617 FRI_NETWORK, /* network address from if */ 618 FRI_BROADCAST, /* broadcast address from if */ 619 FRI_PEERADDR, /* Peer address for P-to-P */ 620 FRI_NETMASKED, /* network address with netmask from if */ 621 FRI_SPLIT, /* For NAT compatibility */ 622 FRI_INTERFACE /* address is based on interface name */ 623 } fr_atypes_t; 624 625 /* 626 * This structure makes up what is considered to be the IPFilter specific 627 * matching components of a filter rule, as opposed to the data structures 628 * used to define the result which are in frentry_t and not here. 629 */ 630 typedef struct fripf { 631 fr_ip_t fri_ip; 632 fr_ip_t fri_mip; /* mask structure */ 633 634 u_short fri_icmpm; /* data for ICMP packets (mask) */ 635 u_short fri_icmp; 636 637 frtuc_t fri_tuc; 638 fr_atypes_t fri_satype; /* addres type */ 639 fr_atypes_t fri_datype; /* addres type */ 640 int fri_sifpidx; /* doing dynamic addressing */ 641 int fri_difpidx; /* index into fr_ifps[] to use when */ 642 } fripf_t; 643 644 #define fri_dlookup fri_mip.fi_dst 645 #define fri_slookup fri_mip.fi_src 646 #define fri_dstnum fri_mip.fi_dstnum 647 #define fri_srcnum fri_mip.fi_srcnum 648 #define fri_dstname fri_mip.fi_dstname 649 #define fri_srcname fri_mip.fi_srcname 650 #define fri_dstptr fri_mip.fi_dstptr 651 #define fri_srcptr fri_mip.fi_srcptr 652 653 654 typedef enum fr_rtypes_e { 655 FR_T_NONE = 0, 656 FR_T_IPF, /* IPF structures */ 657 FR_T_BPFOPC, /* BPF opcode */ 658 FR_T_CALLFUNC, /* callout to function in fr_func only */ 659 FR_T_COMPIPF, /* compiled C code */ 660 FR_T_IPFEXPR, /* IPF expression */ 661 FR_T_BUILTIN = 0x40000000, /* rule is in kernel space */ 662 FR_T_IPF_BUILTIN, 663 FR_T_BPFOPC_BUILTIN, 664 FR_T_CALLFUNC_BUILTIN, 665 FR_T_COMPIPF_BUILTIN, 666 FR_T_IPFEXPR_BUILTIN 667 } fr_rtypes_t; 668 669 typedef struct frentry * (* frentfunc_t) __P((fr_info_t *)); 670 671 typedef struct frentry { 672 ipfmutex_t fr_lock; 673 struct frentry *fr_next; 674 struct frentry **fr_pnext; 675 struct frentry **fr_grp; 676 struct frentry **fr_icmpgrp; 677 struct ipscan *fr_isc; 678 struct frentry *fr_dnext; /* 2 fr_die linked list pointers */ 679 struct frentry **fr_pdnext; 680 void *fr_ifas[4]; 681 void *fr_ptr; /* for use with fr_arg */ 682 int fr_comment; /* text comment for rule */ 683 int fr_size; /* size of this structure */ 684 int fr_ref; /* reference count */ 685 int fr_statecnt; /* state count - for limit rules */ 686 u_32_t fr_die; /* only used on loading the rule */ 687 u_int fr_cksum; /* checksum on filter rules for performance */ 688 /* 689 * The line number from a file is here because we need to be able to 690 * match the rule generated with ``grep rule ipf.conf | ipf -rf -'' 691 * with the rule loaded using ``ipf -f ipf.conf'' - thus it can't be 692 * on the other side of fr_func. 693 */ 694 int fr_flineno; /* line number from conf file */ 695 /* 696 * These are only incremented when a packet matches this rule and 697 * it is the last match 698 */ 699 U_QUAD_T fr_hits; 700 U_QUAD_T fr_bytes; 701 702 /* 703 * For PPS rate limiting 704 * fr_lpu is used to always have the same size for this field, 705 * allocating 64bits for seconds and 32bits for milliseconds. 706 */ 707 union { 708 struct timeval frp_lastpkt; 709 char frp_bytes[12]; 710 } fr_lpu; 711 int fr_curpps; 712 713 union { 714 void *fru_data; 715 char *fru_caddr; 716 fripf_t *fru_ipf; 717 frentfunc_t fru_func; 718 } fr_dun; 719 720 /* 721 * Fields after this may not change whilst in the kernel. 722 */ 723 ipfunc_t fr_func; /* call this function */ 724 int fr_dsize; 725 int fr_pps; 726 fr_rtypes_t fr_type; 727 u_32_t fr_flags; /* per-rule flags && options (see below) */ 728 u_32_t fr_logtag; /* user defined log tag # */ 729 u_32_t fr_collect; /* collection number */ 730 u_int fr_arg; /* misc. numeric arg for rule */ 731 u_int fr_loglevel; /* syslog log facility + priority */ 732 u_char fr_family; 733 u_char fr_icode; /* return ICMP code */ 734 int fr_group; /* group to which this rule belongs */ 735 int fr_grhead; /* group # which this rule starts */ 736 int fr_ifnames[4]; 737 int fr_isctag; 738 int fr_rpc; /* XID Filtering */ 739 ipftag_t fr_nattag; 740 frdest_t fr_tifs[2]; /* "to"/"reply-to" interface */ 741 frdest_t fr_dif; /* duplicate packet interface */ 742 /* 743 * These are all options related to stateful filtering 744 */ 745 host_track_t fr_srctrack; 746 int fr_nostatelog; 747 int fr_statemax; /* max reference count */ 748 int fr_icmphead; /* ICMP group for state options */ 749 u_int fr_age[2]; /* non-TCP state timeouts */ 750 /* 751 * How big is the name buffer at the end? 752 */ 753 int fr_namelen; 754 char fr_names[1]; 755 } frentry_t; 756 757 #define fr_lastpkt fr_lpu.frp_lastpkt 758 #define fr_caddr fr_dun.fru_caddr 759 #define fr_data fr_dun.fru_data 760 #define fr_dfunc fr_dun.fru_func 761 #define fr_ipf fr_dun.fru_ipf 762 #define fr_ip fr_ipf->fri_ip 763 #define fr_mip fr_ipf->fri_mip 764 #define fr_icmpm fr_ipf->fri_icmpm 765 #define fr_icmp fr_ipf->fri_icmp 766 #define fr_tuc fr_ipf->fri_tuc 767 #define fr_satype fr_ipf->fri_satype 768 #define fr_datype fr_ipf->fri_datype 769 #define fr_sifpidx fr_ipf->fri_sifpidx 770 #define fr_difpidx fr_ipf->fri_difpidx 771 #define fr_proto fr_ip.fi_p 772 #define fr_mproto fr_mip.fi_p 773 #define fr_ttl fr_ip.fi_ttl 774 #define fr_mttl fr_mip.fi_ttl 775 #define fr_tos fr_ip.fi_tos 776 #define fr_mtos fr_mip.fi_tos 777 #define fr_tcpfm fr_tuc.ftu_tcpfm 778 #define fr_tcpf fr_tuc.ftu_tcpf 779 #define fr_scmp fr_tuc.ftu_scmp 780 #define fr_dcmp fr_tuc.ftu_dcmp 781 #define fr_dport fr_tuc.ftu_dport 782 #define fr_sport fr_tuc.ftu_sport 783 #define fr_stop fr_tuc.ftu_stop 784 #define fr_dtop fr_tuc.ftu_dtop 785 #define fr_dst fr_ip.fi_dst.in4 786 #define fr_dst6 fr_ip.fi_dst 787 #define fr_daddr fr_ip.fi_dst.in4.s_addr 788 #define fr_src fr_ip.fi_src.in4 789 #define fr_src6 fr_ip.fi_src 790 #define fr_saddr fr_ip.fi_src.in4.s_addr 791 #define fr_dmsk fr_mip.fi_dst.in4 792 #define fr_dmsk6 fr_mip.fi_dst 793 #define fr_dmask fr_mip.fi_dst.in4.s_addr 794 #define fr_smsk fr_mip.fi_src.in4 795 #define fr_smsk6 fr_mip.fi_src 796 #define fr_smask fr_mip.fi_src.in4.s_addr 797 #define fr_dstnum fr_ip.fi_dstnum 798 #define fr_srcnum fr_ip.fi_srcnum 799 #define fr_dlookup fr_ip.fi_dst 800 #define fr_slookup fr_ip.fi_src 801 #define fr_dstname fr_ip.fi_dstname 802 #define fr_srcname fr_ip.fi_srcname 803 #define fr_dsttype fr_ip.fi_dsttype 804 #define fr_srctype fr_ip.fi_srctype 805 #define fr_dstsubtype fr_ip.fi_dstsubtype 806 #define fr_srcsubtype fr_ip.fi_srcsubtype 807 #define fr_dstptr fr_mip.fi_dstptr 808 #define fr_srcptr fr_mip.fi_srcptr 809 #define fr_dstfunc fr_mip.fi_dstfunc 810 #define fr_srcfunc fr_mip.fi_srcfunc 811 #define fr_optbits fr_ip.fi_optmsk 812 #define fr_optmask fr_mip.fi_optmsk 813 #define fr_secbits fr_ip.fi_secmsk 814 #define fr_secmask fr_mip.fi_secmsk 815 #define fr_authbits fr_ip.fi_auth 816 #define fr_authmask fr_mip.fi_auth 817 #define fr_doi fr_ip.fi_doi 818 #define fr_doimask fr_mip.fi_doi 819 #define fr_flx fr_ip.fi_flx 820 #define fr_mflx fr_mip.fi_flx 821 #define fr_ifa fr_ifas[0] 822 #define fr_oifa fr_ifas[2] 823 #define fr_tif fr_tifs[0] 824 #define fr_rif fr_tifs[1] 825 826 #define FR_NOLOGTAG 0 827 828 #define FR_CMPSIZ (sizeof(struct frentry) - \ 829 offsetof(struct frentry, fr_func)) 830 #define FR_NAME(_f, _n) (_f)->fr_names + (_f)->_n 831 832 833 /* 834 * fr_flags 835 */ 836 #define FR_BLOCK 0x00001 /* do not allow packet to pass */ 837 #define FR_PASS 0x00002 /* allow packet to pass */ 838 #define FR_AUTH 0x00003 /* use authentication */ 839 #define FR_PREAUTH 0x00004 /* require preauthentication */ 840 #define FR_ACCOUNT 0x00005 /* Accounting rule */ 841 #define FR_SKIP 0x00006 /* skip rule */ 842 #define FR_DECAPSULATE 0x00008 /* decapsulate rule */ 843 #define FR_CALL 0x00009 /* call rule */ 844 #define FR_CMDMASK 0x0000f 845 #define FR_LOG 0x00010 /* Log */ 846 #define FR_LOGB 0x00011 /* Log-fail */ 847 #define FR_LOGP 0x00012 /* Log-pass */ 848 #define FR_LOGMASK (FR_LOG|FR_CMDMASK) 849 #define FR_CALLNOW 0x00020 /* call another function (fr_func) if matches */ 850 #define FR_NOTSRCIP 0x00040 851 #define FR_NOTDSTIP 0x00080 852 #define FR_QUICK 0x00100 /* match & stop processing list */ 853 #define FR_KEEPFRAG 0x00200 /* keep fragment information */ 854 #define FR_KEEPSTATE 0x00400 /* keep `connection' state information */ 855 #define FR_FASTROUTE 0x00800 /* bypass normal routing */ 856 #define FR_RETRST 0x01000 /* Return TCP RST packet - reset connection */ 857 #define FR_RETICMP 0x02000 /* Return ICMP unreachable packet */ 858 #define FR_FAKEICMP 0x03000 /* Return ICMP unreachable with fake source */ 859 #define FR_OUTQUE 0x04000 /* outgoing packets */ 860 #define FR_INQUE 0x08000 /* ingoing packets */ 861 #define FR_LOGBODY 0x10000 /* Log the body */ 862 #define FR_LOGFIRST 0x20000 /* Log the first byte if state held */ 863 #define FR_LOGORBLOCK 0x40000 /* block the packet if it can't be logged */ 864 #define FR_STLOOSE 0x80000 /* loose state checking */ 865 #define FR_FRSTRICT 0x100000 /* strict frag. cache */ 866 #define FR_STSTRICT 0x200000 /* strict keep state */ 867 #define FR_NEWISN 0x400000 /* new ISN for outgoing TCP */ 868 #define FR_NOICMPERR 0x800000 /* do not match ICMP errors in state */ 869 #define FR_STATESYNC 0x1000000 /* synchronize state to slave */ 870 #define FR_COPIED 0x2000000 /* copied from user space */ 871 #define FR_INACTIVE 0x4000000 /* only used when flush'ing rules */ 872 #define FR_NOMATCH 0x8000000 /* no match occured */ 873 /* 0x10000000 FF_LOGPASS */ 874 /* 0x20000000 FF_LOGBLOCK */ 875 /* 0x40000000 FF_LOGNOMATCH */ 876 /* 0x80000000 FF_BLOCKNONIP */ 877 878 #define FR_RETMASK (FR_RETICMP|FR_RETRST|FR_FAKEICMP) 879 #define FR_ISBLOCK(x) (((x) & FR_CMDMASK) == FR_BLOCK) 880 #define FR_ISPASS(x) (((x) & FR_CMDMASK) == FR_PASS) 881 #define FR_ISAUTH(x) (((x) & FR_CMDMASK) == FR_AUTH) 882 #define FR_ISPREAUTH(x) (((x) & FR_CMDMASK) == FR_PREAUTH) 883 #define FR_ISACCOUNT(x) (((x) & FR_CMDMASK) == FR_ACCOUNT) 884 #define FR_ISSKIP(x) (((x) & FR_CMDMASK) == FR_SKIP) 885 #define FR_ISDECAPS(x) (((x) & FR_CMDMASK) == FR_DECAPSULATE) 886 #define FR_ISNOMATCH(x) ((x) & FR_NOMATCH) 887 #define FR_INOUT (FR_INQUE|FR_OUTQUE) 888 889 /* 890 * recognized flags for SIOCGETFF and SIOCSETFF, and get put in fr_flags 891 */ 892 #define FF_LOGPASS 0x10000000 893 #define FF_LOGBLOCK 0x20000000 894 #define FF_LOGNOMATCH 0x40000000 895 #define FF_LOGGING (FF_LOGPASS|FF_LOGBLOCK|FF_LOGNOMATCH) 896 #define FF_BLOCKNONIP 0x80000000 /* Solaris2 Only */ 897 898 899 /* 900 * Structure that passes information on what/how to flush to the kernel. 901 */ 902 typedef struct ipfflush { 903 int ipflu_how; 904 int ipflu_arg; 905 } ipfflush_t; 906 907 908 /* 909 * 910 */ 911 typedef struct ipfgetctl { 912 u_int ipfg_min; /* min value */ 913 u_int ipfg_current; /* current value */ 914 u_int ipfg_max; /* max value */ 915 u_int ipfg_default; /* default value */ 916 u_int ipfg_steps; /* value increments */ 917 char ipfg_name[40]; /* tag name for this control */ 918 } ipfgetctl_t; 919 920 typedef struct ipfsetctl { 921 int ipfs_which; /* 0 = min 1 = current 2 = max 3 = default */ 922 u_int ipfs_value; /* min value */ 923 char ipfs_name[40]; /* tag name for this control */ 924 } ipfsetctl_t; 925 926 927 /* 928 * Some of the statistics below are in their own counters, but most are kept 929 * in this single structure so that they can all easily be collected and 930 * copied back as required. 931 */ 932 typedef struct ipf_statistics { 933 u_long fr_icmp_coalesce; 934 u_long fr_tcp_frag; 935 u_long fr_tcp_pullup; 936 u_long fr_tcp_short; 937 u_long fr_tcp_small; 938 u_long fr_tcp_bad_flags; 939 u_long fr_udp_pullup; 940 u_long fr_ip_freed; 941 u_long fr_v6_ah_bad; 942 u_long fr_v6_bad; 943 u_long fr_v6_badfrag; 944 u_long fr_v6_dst_bad; 945 u_long fr_v6_esp_pullup; 946 u_long fr_v6_ext_short; 947 u_long fr_v6_ext_pullup; 948 u_long fr_v6_ext_hlen; 949 u_long fr_v6_frag_bad; 950 u_long fr_v6_frag_pullup; 951 u_long fr_v6_frag_size; 952 u_long fr_v6_gre_pullup; 953 u_long fr_v6_icmp6_pullup; 954 u_long fr_v6_rh_bad; 955 u_long fr_v6_badttl; /* TTL in packet doesn't reach minimum */ 956 u_long fr_v4_ah_bad; 957 u_long fr_v4_ah_pullup; 958 u_long fr_v4_esp_pullup; 959 u_long fr_v4_cipso_bad; 960 u_long fr_v4_cipso_tlen; 961 u_long fr_v4_gre_frag; 962 u_long fr_v4_gre_pullup; 963 u_long fr_v4_icmp_frag; 964 u_long fr_v4_icmp_pullup; 965 u_long fr_v4_badttl; /* TTL in packet doesn't reach minimum */ 966 u_long fr_v4_badsrc; /* source received doesn't match route */ 967 u_long fr_l4_badcksum; /* layer 4 header checksum failure */ 968 u_long fr_badcoalesces; 969 u_long fr_pass; /* packets allowed */ 970 u_long fr_block; /* packets denied */ 971 u_long fr_nom; /* packets which don't match any rule */ 972 u_long fr_short; /* packets which are short */ 973 u_long fr_ppkl; /* packets allowed and logged */ 974 u_long fr_bpkl; /* packets denied and logged */ 975 u_long fr_npkl; /* packets unmatched and logged */ 976 u_long fr_ret; /* packets for which a return is sent */ 977 u_long fr_acct; /* packets for which counting was performed */ 978 u_long fr_bnfr; /* bad attempts to allocate fragment state */ 979 u_long fr_nfr; /* new fragment state kept */ 980 u_long fr_cfr; /* add new fragment state but complete pkt */ 981 u_long fr_bads; /* bad attempts to allocate packet state */ 982 u_long fr_ads; /* new packet state kept */ 983 u_long fr_chit; /* cached hit */ 984 u_long fr_cmiss; /* cached miss */ 985 u_long fr_tcpbad; /* TCP checksum check failures */ 986 u_long fr_pull[2]; /* good and bad pullup attempts */ 987 u_long fr_bad; /* bad IP packets to the filter */ 988 u_long fr_ipv6; /* IPv6 packets in/out */ 989 u_long fr_ppshit; /* dropped because of pps ceiling */ 990 u_long fr_ipud; /* IP id update failures */ 991 } ipf_statistics_t; 992 993 /* 994 * Log structure. Each packet header logged is prepended by one of these. 995 * Following this in the log records read from the device will be an ipflog 996 * structure which is then followed by any packet data. 997 */ 998 typedef struct iplog { 999 u_32_t ipl_magic; 1000 u_int ipl_count; 1001 u_32_t ipl_seqnum; 1002 struct timeval ipl_time; 1003 size_t ipl_dsize; 1004 struct iplog *ipl_next; 1005 } iplog_t; 1006 1007 #define ipl_sec ipl_time.tv_sec 1008 #define ipl_usec ipl_time.tv_usec 1009 1010 #define IPL_MAGIC 0x49504c4d /* 'IPLM' */ 1011 #define IPL_MAGIC_NAT 0x49504c4e /* 'IPLN' */ 1012 #define IPL_MAGIC_STATE 0x49504c53 /* 'IPLS' */ 1013 #define IPLOG_SIZE sizeof(iplog_t) 1014 1015 typedef struct ipflog { 1016 #if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \ 1017 (defined(OpenBSD) && (OpenBSD >= 199603)) 1018 #else 1019 u_int fl_unit; 1020 #endif 1021 u_32_t fl_rule; 1022 u_32_t fl_flags; 1023 u_32_t fl_lflags; 1024 u_32_t fl_logtag; 1025 ipftag_t fl_nattag; 1026 u_short fl_plen; /* extra data after hlen */ 1027 u_short fl_loglevel; /* syslog log level */ 1028 char fl_group[FR_GROUPLEN]; 1029 u_char fl_hlen; /* length of IP headers saved */ 1030 u_char fl_dir; 1031 u_char fl_breason; /* from fin_reason */ 1032 u_char fl_family; /* address family of packet logged */ 1033 char fl_ifname[LIFNAMSIZ]; 1034 } ipflog_t; 1035 1036 #ifndef IPF_LOGGING 1037 # define IPF_LOGGING 0 1038 #endif 1039 #ifndef IPF_DEFAULT_PASS 1040 # define IPF_DEFAULT_PASS FR_PASS 1041 #endif 1042 1043 #define DEFAULT_IPFLOGSIZE 32768 1044 #ifndef IPFILTER_LOGSIZE 1045 # define IPFILTER_LOGSIZE DEFAULT_IPFLOGSIZE 1046 #else 1047 # if IPFILTER_LOGSIZE < 8192 1048 # error IPFILTER_LOGSIZE too small. Must be >= 8192 1049 # endif 1050 #endif 1051 1052 #define IPF_OPTCOPY 0x07ff00 /* bit mask of copied options */ 1053 1054 /* 1055 * Device filenames for reading log information. Use ipf on Solaris2 because 1056 * ipl is already a name used by something else. 1057 */ 1058 #ifndef IPL_NAME 1059 # if SOLARIS 1060 # define IPL_NAME "/dev/ipf" 1061 # else 1062 # define IPL_NAME "/dev/ipl" 1063 # endif 1064 #endif 1065 /* 1066 * Pathnames for various IP Filter control devices. Used by LKM 1067 * and userland, so defined here. 1068 */ 1069 #define IPNAT_NAME "/dev/ipnat" 1070 #define IPSTATE_NAME "/dev/ipstate" 1071 #define IPAUTH_NAME "/dev/ipauth" 1072 #define IPSYNC_NAME "/dev/ipsync" 1073 #define IPSCAN_NAME "/dev/ipscan" 1074 #define IPLOOKUP_NAME "/dev/iplookup" 1075 1076 #define IPL_LOGIPF 0 /* Minor device #'s for accessing logs */ 1077 #define IPL_LOGNAT 1 1078 #define IPL_LOGSTATE 2 1079 #define IPL_LOGAUTH 3 1080 #define IPL_LOGSYNC 4 1081 #define IPL_LOGSCAN 5 1082 #define IPL_LOGLOOKUP 6 1083 #define IPL_LOGCOUNT 7 1084 #define IPL_LOGMAX 7 1085 #define IPL_LOGSIZE IPL_LOGMAX + 1 1086 #define IPL_LOGALL -1 1087 #define IPL_LOGNONE -2 1088 1089 /* 1090 * For SIOCGETFS 1091 */ 1092 typedef struct friostat { 1093 ipf_statistics_t f_st[2]; 1094 frentry_t *f_ipf[2][2]; 1095 frentry_t *f_acct[2][2]; 1096 frentry_t *f_auth; 1097 struct frgroup *f_groups[IPL_LOGSIZE][2]; 1098 u_long f_froute[2]; 1099 u_long f_log_ok; 1100 u_long f_log_fail; 1101 u_long f_rb_no_mem; 1102 u_long f_rb_node_max; 1103 u_32_t f_ticks; 1104 int f_locks[IPL_LOGSIZE]; 1105 int f_defpass; /* default pass - from fr_pass */ 1106 int f_active; /* 1 or 0 - active rule set */ 1107 int f_running; /* 1 if running, else 0 */ 1108 int f_logging; /* 1 if enabled, else 0 */ 1109 int f_features; 1110 char f_version[32]; /* version string */ 1111 } friostat_t; 1112 1113 #define f_fin f_ipf[0] 1114 #define f_fout f_ipf[1] 1115 #define f_acctin f_acct[0] 1116 #define f_acctout f_acct[1] 1117 1118 #define IPF_FEAT_LKM 0x001 1119 #define IPF_FEAT_LOG 0x002 1120 #define IPF_FEAT_LOOKUP 0x004 1121 #define IPF_FEAT_BPF 0x008 1122 #define IPF_FEAT_COMPILED 0x010 1123 #define IPF_FEAT_CKSUM 0x020 1124 #define IPF_FEAT_SYNC 0x040 1125 #define IPF_FEAT_SCAN 0x080 1126 #define IPF_FEAT_IPV6 0x100 1127 1128 typedef struct optlist { 1129 u_short ol_val; 1130 int ol_bit; 1131 } optlist_t; 1132 1133 1134 /* 1135 * Group list structure. 1136 */ 1137 typedef struct frgroup { 1138 struct frgroup *fg_next; 1139 struct frentry *fg_head; 1140 struct frentry *fg_start; 1141 struct frgroup **fg_set; 1142 u_32_t fg_flags; 1143 int fg_ref; 1144 char fg_name[FR_GROUPLEN]; 1145 } frgroup_t; 1146 1147 #define FG_NAME(g) (*(g)->fg_name == '\0' ? "" : (g)->fg_name) 1148 1149 1150 /* 1151 * Used by state and NAT tables 1152 */ 1153 typedef struct icmpinfo { 1154 u_short ici_id; 1155 u_short ici_seq; 1156 u_char ici_type; 1157 } icmpinfo_t; 1158 1159 typedef struct udpinfo { 1160 u_short us_sport; 1161 u_short us_dport; 1162 } udpinfo_t; 1163 1164 1165 typedef struct tcpdata { 1166 u_32_t td_end; 1167 u_32_t td_maxend; 1168 u_32_t td_maxwin; 1169 u_32_t td_winscale; 1170 u_32_t td_maxseg; 1171 int td_winflags; 1172 } tcpdata_t; 1173 1174 #define TCP_WSCALE_MAX 14 1175 1176 #define TCP_WSCALE_SEEN 0x00000001 1177 #define TCP_WSCALE_FIRST 0x00000002 1178 #define TCP_SACK_PERMIT 0x00000004 1179 1180 1181 typedef struct tcpinfo { 1182 u_32_t ts_sport; 1183 u_32_t ts_dport; 1184 tcpdata_t ts_data[2]; 1185 } tcpinfo_t; 1186 1187 1188 /* 1189 * Structures to define a GRE header as seen in a packet. 1190 */ 1191 struct grebits { 1192 #if defined(sparc) 1193 u_32_t grb_ver:3; 1194 u_32_t grb_flags:3; 1195 u_32_t grb_A:1; 1196 u_32_t grb_recur:1; 1197 u_32_t grb_s:1; 1198 u_32_t grb_S:1; 1199 u_32_t grb_K:1; 1200 u_32_t grb_R:1; 1201 u_32_t grb_C:1; 1202 #else 1203 u_32_t grb_C:1; 1204 u_32_t grb_R:1; 1205 u_32_t grb_K:1; 1206 u_32_t grb_S:1; 1207 u_32_t grb_s:1; 1208 u_32_t grb_recur:1; 1209 u_32_t grb_A:1; 1210 u_32_t grb_flags:3; 1211 u_32_t grb_ver:3; 1212 #endif 1213 u_short grb_ptype; 1214 }; 1215 1216 typedef struct grehdr { 1217 union { 1218 struct grebits gru_bits; 1219 u_short gru_flags; 1220 } gr_un; 1221 u_short gr_len; 1222 u_short gr_call; 1223 } grehdr_t; 1224 1225 #define gr_flags gr_un.gru_flags 1226 #define gr_bits gr_un.gru_bits 1227 #define gr_ptype gr_bits.grb_ptype 1228 #define gr_C gr_bits.grb_C 1229 #define gr_R gr_bits.grb_R 1230 #define gr_K gr_bits.grb_K 1231 #define gr_S gr_bits.grb_S 1232 #define gr_s gr_bits.grb_s 1233 #define gr_recur gr_bits.grb_recur 1234 #define gr_A gr_bits.grb_A 1235 #define gr_ver gr_bits.grb_ver 1236 1237 /* 1238 * GRE information tracked by "keep state" 1239 */ 1240 typedef struct greinfo { 1241 u_short gs_call[2]; 1242 u_short gs_flags; 1243 u_short gs_ptype; 1244 } greinfo_t; 1245 1246 #define GRE_REV(x) ((ntohs(x) >> 13) & 7) 1247 1248 1249 /* 1250 * Format of an Authentication header 1251 */ 1252 typedef struct authhdr { 1253 u_char ah_next; 1254 u_char ah_plen; 1255 u_short ah_reserved; 1256 u_32_t ah_spi; 1257 u_32_t ah_seq; 1258 /* Following the sequence number field is 0 or more bytes of */ 1259 /* authentication data, as specified by ah_plen - RFC 2402. */ 1260 } authhdr_t; 1261 1262 1263 /* 1264 * Timeout tail queue list member 1265 */ 1266 typedef struct ipftqent { 1267 struct ipftqent **tqe_pnext; 1268 struct ipftqent *tqe_next; 1269 struct ipftq *tqe_ifq; 1270 void *tqe_parent; /* pointer back to NAT/state struct */ 1271 u_32_t tqe_die; /* when this entriy is to die */ 1272 u_32_t tqe_touched; 1273 int tqe_flags; 1274 int tqe_state[2]; /* current state of this entry */ 1275 } ipftqent_t; 1276 1277 #define TQE_RULEBASED 0x00000001 1278 #define TQE_DELETE 0x00000002 1279 1280 1281 /* 1282 * Timeout tail queue head for IPFilter 1283 */ 1284 typedef struct ipftq { 1285 ipfmutex_t ifq_lock; 1286 u_int ifq_ttl; 1287 ipftqent_t *ifq_head; 1288 ipftqent_t **ifq_tail; 1289 struct ipftq *ifq_next; 1290 struct ipftq **ifq_pnext; 1291 int ifq_ref; 1292 u_int ifq_flags; 1293 } ipftq_t; 1294 1295 #define IFQF_USER 0x01 /* User defined aging */ 1296 #define IFQF_DELETE 0x02 /* Marked for deletion */ 1297 #define IFQF_PROXY 0x04 /* Timeout queue in use by a proxy */ 1298 1299 #define IPFTQ_INIT(x,y,z) do { \ 1300 (x)->ifq_ttl = (y); \ 1301 (x)->ifq_head = NULL; \ 1302 (x)->ifq_ref = 1; \ 1303 (x)->ifq_tail = &(x)->ifq_head; \ 1304 MUTEX_INIT(&(x)->ifq_lock, (z)); \ 1305 } while (0) 1306 1307 #define IPF_HZ_MULT 1 1308 #define IPF_HZ_DIVIDE 2 /* How many times a second ipfilter */ 1309 /* checks its timeout queues. */ 1310 #define IPF_TTLVAL(x) (((x) / IPF_HZ_MULT) * IPF_HZ_DIVIDE) 1311 1312 typedef int (*ipftq_delete_fn_t)(struct ipf_main_softc_s *, void *); 1313 1314 1315 /* 1316 * Object structure description. For passing through in ioctls. 1317 */ 1318 typedef struct ipfobj { 1319 u_32_t ipfo_rev; /* IPFilter version number */ 1320 u_32_t ipfo_size; /* size of object at ipfo_ptr */ 1321 void *ipfo_ptr; /* pointer to object */ 1322 int ipfo_type; /* type of object being pointed to */ 1323 int ipfo_offset; /* bytes from ipfo_ptr where to start */ 1324 int ipfo_retval; /* return value */ 1325 u_char ipfo_xxxpad[28]; /* reserved for future use */ 1326 } ipfobj_t; 1327 1328 #define IPFOBJ_FRENTRY 0 /* struct frentry */ 1329 #define IPFOBJ_IPFSTAT 1 /* struct friostat */ 1330 #define IPFOBJ_IPFINFO 2 /* struct fr_info */ 1331 #define IPFOBJ_AUTHSTAT 3 /* struct fr_authstat */ 1332 #define IPFOBJ_FRAGSTAT 4 /* struct ipfrstat */ 1333 #define IPFOBJ_IPNAT 5 /* struct ipnat */ 1334 #define IPFOBJ_NATSTAT 6 /* struct natstat */ 1335 #define IPFOBJ_STATESAVE 7 /* struct ipstate_save */ 1336 #define IPFOBJ_NATSAVE 8 /* struct nat_save */ 1337 #define IPFOBJ_NATLOOKUP 9 /* struct natlookup */ 1338 #define IPFOBJ_IPSTATE 10 /* struct ipstate */ 1339 #define IPFOBJ_STATESTAT 11 /* struct ips_stat */ 1340 #define IPFOBJ_FRAUTH 12 /* struct frauth */ 1341 #define IPFOBJ_TUNEABLE 13 /* struct ipftune */ 1342 #define IPFOBJ_NAT 14 /* struct nat */ 1343 #define IPFOBJ_IPFITER 15 /* struct ipfruleiter */ 1344 #define IPFOBJ_GENITER 16 /* struct ipfgeniter */ 1345 #define IPFOBJ_GTABLE 17 /* struct ipftable */ 1346 #define IPFOBJ_LOOKUPITER 18 /* struct ipflookupiter */ 1347 #define IPFOBJ_STATETQTAB 19 /* struct ipftq * NSTATES */ 1348 #define IPFOBJ_IPFEXPR 20 1349 #define IPFOBJ_PROXYCTL 21 /* strct ap_ctl */ 1350 #define IPFOBJ_FRIPF 22 /* structfripf */ 1351 #define IPFOBJ_COUNT 23 /* How many #defines are above this? */ 1352 1353 1354 typedef union ipftunevalptr { 1355 void *ipftp_void; 1356 u_long *ipftp_long; 1357 u_int *ipftp_int; 1358 u_short *ipftp_short; 1359 u_char *ipftp_char; 1360 u_long ipftp_offset; 1361 } ipftunevalptr_t; 1362 1363 typedef union ipftuneval { 1364 u_long ipftu_long; 1365 u_int ipftu_int; 1366 u_short ipftu_short; 1367 u_char ipftu_char; 1368 } ipftuneval_t; 1369 1370 struct ipftuneable; 1371 typedef int (* ipftunefunc_t) __P((struct ipf_main_softc_s *, struct ipftuneable *, ipftuneval_t *)); 1372 1373 typedef struct ipftuneable { 1374 ipftunevalptr_t ipft_una; 1375 const char *ipft_name; 1376 u_long ipft_min; 1377 u_long ipft_max; 1378 int ipft_sz; 1379 int ipft_flags; 1380 struct ipftuneable *ipft_next; 1381 ipftunefunc_t ipft_func; 1382 } ipftuneable_t; 1383 1384 #define ipft_addr ipft_una.ipftp_void 1385 #define ipft_plong ipft_una.ipftp_long 1386 #define ipft_pint ipft_una.ipftp_int 1387 #define ipft_pshort ipft_una.ipftp_short 1388 #define ipft_pchar ipft_una.ipftp_char 1389 1390 #define IPFT_RDONLY 1 /* read-only */ 1391 #define IPFT_WRDISABLED 2 /* write when disabled only */ 1392 1393 typedef struct ipftune { 1394 void *ipft_cookie; 1395 ipftuneval_t ipft_un; 1396 u_long ipft_min; 1397 u_long ipft_max; 1398 int ipft_sz; 1399 int ipft_flags; 1400 char ipft_name[80]; 1401 } ipftune_t; 1402 1403 #define ipft_vlong ipft_un.ipftu_long 1404 #define ipft_vint ipft_un.ipftu_int 1405 #define ipft_vshort ipft_un.ipftu_short 1406 #define ipft_vchar ipft_un.ipftu_char 1407 1408 /* 1409 * Hash table header 1410 */ 1411 #define IPFHASH(x,y) typedef struct { \ 1412 ipfrwlock_t ipfh_lock; \ 1413 struct x *ipfh_head; \ 1414 } y 1415 1416 /* 1417 ** HPUX Port 1418 */ 1419 #ifdef __hpux 1420 /* HP-UX locking sequence deadlock detection module lock MAJOR ID */ 1421 # define IPF_SMAJ 0 /* temp assignment XXX, not critical */ 1422 #endif 1423 1424 #if !defined(CDEV_MAJOR) && defined (__FreeBSD_version) && \ 1425 (__FreeBSD_version >= 220000) 1426 # define CDEV_MAJOR 79 1427 #endif 1428 1429 /* 1430 * Post NetBSD 1.2 has the PFIL interface for packet filters. This turns 1431 * on those hooks. We don't need any special mods in non-IP Filter code 1432 * with this! 1433 */ 1434 #if (defined(NetBSD) && (NetBSD > 199609) && (NetBSD <= 1991011)) || \ 1435 (defined(NetBSD1_2) && NetBSD1_2 > 1) || \ 1436 (defined(__FreeBSD__) && (__FreeBSD_version >= 500043)) 1437 # if (NetBSD >= 199905) 1438 # define PFIL_HOOKS 1439 # endif 1440 # ifdef PFIL_HOOKS 1441 # define NETBSD_PF 1442 # endif 1443 #endif 1444 1445 #ifdef _KERNEL 1446 # define FR_VERBOSE(verb_pr) 1447 # define FR_DEBUG(verb_pr) 1448 #else 1449 extern void ipfkdebug __P((char *, ...)); 1450 extern void ipfkverbose __P((char *, ...)); 1451 # define FR_VERBOSE(verb_pr) ipfkverbose verb_pr 1452 # define FR_DEBUG(verb_pr) ipfkdebug verb_pr 1453 #endif 1454 1455 /* 1456 * 1457 */ 1458 typedef struct ipfruleiter { 1459 int iri_inout; 1460 char iri_group[FR_GROUPLEN]; 1461 int iri_active; 1462 int iri_nrules; 1463 int iri_v; /* No longer used (compatibility) */ 1464 frentry_t *iri_rule; 1465 } ipfruleiter_t; 1466 1467 /* 1468 * Values for iri_inout 1469 */ 1470 #define F_IN 0 1471 #define F_OUT 1 1472 #define F_ACIN 2 1473 #define F_ACOUT 3 1474 1475 1476 typedef struct ipfgeniter { 1477 int igi_type; 1478 int igi_nitems; 1479 void *igi_data; 1480 } ipfgeniter_t; 1481 1482 #define IPFGENITER_IPF 0 1483 #define IPFGENITER_NAT 1 1484 #define IPFGENITER_IPNAT 2 1485 #define IPFGENITER_FRAG 3 1486 #define IPFGENITER_AUTH 4 1487 #define IPFGENITER_STATE 5 1488 #define IPFGENITER_NATFRAG 6 1489 #define IPFGENITER_HOSTMAP 7 1490 #define IPFGENITER_LOOKUP 8 1491 1492 typedef struct ipftable { 1493 int ita_type; 1494 void *ita_table; 1495 } ipftable_t; 1496 1497 #define IPFTABLE_BUCKETS 1 1498 #define IPFTABLE_BUCKETS_NATIN 2 1499 #define IPFTABLE_BUCKETS_NATOUT 3 1500 1501 1502 /* 1503 * 1504 */ 1505 typedef struct ipftoken { 1506 struct ipftoken *ipt_next; 1507 struct ipftoken **ipt_pnext; 1508 void *ipt_ctx; 1509 void *ipt_data; 1510 u_long ipt_die; 1511 int ipt_type; 1512 int ipt_uid; 1513 int ipt_subtype; 1514 int ipt_ref; 1515 int ipt_complete; 1516 } ipftoken_t; 1517 1518 1519 /* 1520 * 1521 */ 1522 typedef struct ipfexp { 1523 int ipfe_cmd; 1524 int ipfe_not; 1525 int ipfe_narg; 1526 int ipfe_arg0; 1527 } ipfexp_t; 1528 1529 /* 1530 * Currently support commands (ipfe_cmd) 1531 * 32bits is split up follows: 1532 * aabbcccc 1533 * aa = 0 = packet matching, 1 = meta data matching 1534 * bb = IP protocol number 1535 * cccc = command 1536 */ 1537 #define IPF_EXP_IP_PR 0x00000001 1538 #define IPF_EXP_IP_ADDR 0x00000002 1539 #define IPF_EXP_IP_SRCADDR 0x00000003 1540 #define IPF_EXP_IP_DSTADDR 0x00000004 1541 #define IPF_EXP_IP6_ADDR 0x00000005 1542 #define IPF_EXP_IP6_SRCADDR 0x00000006 1543 #define IPF_EXP_IP6_DSTADDR 0x00000007 1544 #define IPF_EXP_TCP_FLAGS 0x00060001 1545 #define IPF_EXP_TCP_PORT 0x00060002 1546 #define IPF_EXP_TCP_SPORT 0x00060003 1547 #define IPF_EXP_TCP_DPORT 0x00060004 1548 #define IPF_EXP_UDP_PORT 0x00110002 1549 #define IPF_EXP_UDP_SPORT 0x00110003 1550 #define IPF_EXP_UDP_DPORT 0x00110004 1551 #define IPF_EXP_IDLE_GT 0x01000001 1552 #define IPF_EXP_TCP_STATE 0x01060002 1553 #define IPF_EXP_END 0xffffffff 1554 1555 #define ONE_DAY IPF_TTLVAL(1 * 86400) /* 1 day */ 1556 #define FIVE_DAYS (5 * ONE_DAY) 1557 1558 typedef struct ipf_main_softc_s { 1559 struct ipf_main_softc_s *ipf_next; 1560 ipfmutex_t ipf_rw; 1561 ipfmutex_t ipf_timeoutlock; 1562 ipfrwlock_t ipf_mutex; 1563 ipfrwlock_t ipf_frag; 1564 ipfrwlock_t ipf_global; 1565 ipfrwlock_t ipf_tokens; 1566 ipfrwlock_t ipf_state; 1567 ipfrwlock_t ipf_nat; 1568 ipfrwlock_t ipf_natfrag; 1569 ipfrwlock_t ipf_poolrw; 1570 int ipf_dynamic_softc; 1571 int ipf_refcnt; 1572 int ipf_running; 1573 int ipf_flags; 1574 int ipf_active; 1575 int ipf_control_forwarding; 1576 int ipf_update_ipid; 1577 int ipf_chksrc; /* causes a system crash if enabled */ 1578 int ipf_pass; 1579 int ipf_minttl; 1580 int ipf_icmpminfragmtu; 1581 int ipf_interror; /* Should be in a struct that is per */ 1582 /* thread or process. Does not belong */ 1583 /* here but there's a lot more work */ 1584 /* in doing that properly. For now, */ 1585 /* it is squatting. */ 1586 u_int ipf_tcpidletimeout; 1587 u_int ipf_tcpclosewait; 1588 u_int ipf_tcplastack; 1589 u_int ipf_tcptimewait; 1590 u_int ipf_tcptimeout; 1591 u_int ipf_tcpsynsent; 1592 u_int ipf_tcpsynrecv; 1593 u_int ipf_tcpclosed; 1594 u_int ipf_tcphalfclosed; 1595 u_int ipf_udptimeout; 1596 u_int ipf_udpacktimeout; 1597 u_int ipf_icmptimeout; 1598 u_int ipf_icmpacktimeout; 1599 u_int ipf_iptimeout; 1600 u_long ipf_ticks; 1601 u_long ipf_userifqs; 1602 u_long ipf_rb_no_mem; 1603 u_long ipf_rb_node_max; 1604 u_long ipf_frouteok[2]; 1605 ipftuneable_t *ipf_tuners; 1606 void *ipf_frag_soft; 1607 void *ipf_nat_soft; 1608 void *ipf_state_soft; 1609 void *ipf_auth_soft; 1610 void *ipf_proxy_soft; 1611 void *ipf_sync_soft; 1612 void *ipf_lookup_soft; 1613 void *ipf_log_soft; 1614 struct frgroup *ipf_groups[IPL_LOGSIZE][2]; 1615 frentry_t *ipf_rules[2][2]; 1616 frentry_t *ipf_acct[2][2]; 1617 frentry_t *ipf_rule_explist[2]; 1618 ipftoken_t *ipf_token_head; 1619 ipftoken_t **ipf_token_tail; 1620 #if defined(__FreeBSD_version) && (__FreeBSD_version >= 300000) && \ 1621 defined(_KERNEL) 1622 struct callout_handle ipf_slow_ch; 1623 #endif 1624 #if defined(linux) && defined(_KERNEL) 1625 struct timer_list ipf_timer; 1626 #endif 1627 #if NETBSD_GE_REV(104040000) 1628 struct callout ipf_slow_ch; 1629 #endif 1630 #if SOLARIS 1631 # if SOLARIS2 >= 7 1632 timeout_id_t ipf_slow_ch; 1633 # else 1634 int ipf_slow_ch; 1635 # endif 1636 #endif 1637 #if defined(_KERNEL) 1638 # if SOLARIS 1639 struct pollhead ipf_poll_head[IPL_LOGSIZE]; 1640 void *ipf_dip; 1641 # if defined(INSTANCES) 1642 int ipf_get_loopback; 1643 u_long ipf_idnum; 1644 net_handle_t ipf_nd_v4; 1645 net_handle_t ipf_nd_v6; 1646 hook_t *ipf_hk_v4_in; 1647 hook_t *ipf_hk_v4_out; 1648 hook_t *ipf_hk_v4_nic; 1649 hook_t *ipf_hk_v6_in; 1650 hook_t *ipf_hk_v6_out; 1651 hook_t *ipf_hk_v6_nic; 1652 hook_t *ipf_hk_loop_v4_in; 1653 hook_t *ipf_hk_loop_v4_out; 1654 hook_t *ipf_hk_loop_v6_in; 1655 hook_t *ipf_hk_loop_v6_out; 1656 # endif 1657 # else 1658 # if defined(linux) && defined(_KERNEL) 1659 struct poll_table_struct ipf_selwait[IPL_LOGSIZE]; 1660 wait_queue_head_t iplh_linux[IPL_LOGSIZE]; 1661 # else 1662 struct selinfo ipf_selwait[IPL_LOGSIZE]; 1663 # endif 1664 # endif 1665 #endif 1666 void *ipf_slow; 1667 ipf_statistics_t ipf_stats[2]; 1668 u_char ipf_iss_secret[32]; 1669 u_short ipf_ip_id; 1670 } ipf_main_softc_t; 1671 1672 #define IPFERROR(_e) do { softc->ipf_interror = (_e); \ 1673 DT1(user_error, int, _e); \ 1674 } while (0) 1675 1676 #ifndef _KERNEL 1677 extern int ipf_check __P((void *, struct ip *, int, void *, int, mb_t **)); 1678 extern int (*ipf_checkp) __P((ip_t *, int, void *, int, mb_t **)); 1679 extern struct ifnet *get_unit __P((char *, int)); 1680 extern char *get_ifname __P((struct ifnet *)); 1681 extern int ipfioctl __P((ipf_main_softc_t *, int, ioctlcmd_t, 1682 caddr_t, int)); 1683 extern void m_freem __P((mb_t *)); 1684 extern size_t msgdsize __P((mb_t *)); 1685 extern int bcopywrap __P((void *, void *, size_t)); 1686 #else /* #ifndef _KERNEL */ 1687 # if defined(__NetBSD__) && defined(PFIL_HOOKS) 1688 extern void ipfilterattach __P((int)); 1689 # endif 1690 extern int ipl_enable __P((void)); 1691 extern int ipl_disable __P((void)); 1692 # ifdef MENTAT 1693 extern int ipf_check __P((void *, struct ip *, int, void *, int, void *, 1694 mblk_t **)); 1695 # if SOLARIS 1696 # if SOLARIS2 >= 7 1697 extern int ipfioctl __P((dev_t, int, intptr_t, int, cred_t *, int *)); 1698 # else 1699 extern int ipfioctl __P((dev_t, int, int *, int, cred_t *, int *)); 1700 # endif 1701 # endif 1702 # ifdef __hpux 1703 extern int ipfioctl __P((dev_t, int, caddr_t, int)); 1704 extern int ipf_select __P((dev_t, int)); 1705 # endif 1706 extern int ipf_qout __P((queue_t *, mblk_t *)); 1707 # else /* MENTAT */ 1708 extern int ipf_check __P((void *, struct ip *, int, void *, int, mb_t **)); 1709 extern int (*fr_checkp) __P((ip_t *, int, void *, int, mb_t **)); 1710 extern size_t mbufchainlen __P((mb_t *)); 1711 # ifdef __sgi 1712 # include <sys/cred.h> 1713 extern int ipfioctl __P((dev_t, int, caddr_t, int, cred_t *, int *)); 1714 extern int ipfilter_sgi_attach __P((void)); 1715 extern void ipfilter_sgi_detach __P((void)); 1716 extern void ipfilter_sgi_intfsync __P((void)); 1717 # else 1718 # ifdef IPFILTER_LKM 1719 extern int ipf_identify __P((char *)); 1720 # endif 1721 # if BSDOS_GE_REV(199510) || FREEBSD_GE_REV(220000) || \ 1722 (defined(NetBSD) && (NetBSD >= 199511)) || defined(__OpenBSD__) 1723 # if defined(__NetBSD__) || BSDOS_GE_REV(199701) || \ 1724 defined(__OpenBSD__) || FREEBSD_GE_REV(300000) 1725 # if (__FreeBSD_version >= 500024) 1726 # if (__FreeBSD_version >= 502116) 1727 extern int ipfioctl __P((struct cdev*, u_long, caddr_t, int, struct thread *)); 1728 # else 1729 extern int ipfioctl __P((dev_t, u_long, caddr_t, int, struct thread *)); 1730 # endif /* __FreeBSD_version >= 502116 */ 1731 # else 1732 # if NETBSD_GE_REV(499001000) 1733 extern int ipfioctl __P((dev_t, u_long, void *, int, struct lwp *)); 1734 # else 1735 # if NETBSD_GE_REV(399001400) 1736 extern int ipfioctl __P((dev_t, u_long, caddr_t, int, struct lwp *)); 1737 # else 1738 extern int ipfioctl __P((dev_t, u_long, caddr_t, int, struct proc *)); 1739 # endif 1740 # endif 1741 # endif /* __FreeBSD_version >= 500024 */ 1742 # else 1743 extern int ipfioctl __P((dev_t, int, caddr_t, int, struct proc *)); 1744 # endif 1745 # else 1746 # ifdef linux 1747 extern int ipfioctl __P((struct inode *, struct file *, u_int, u_long)); 1748 # else 1749 extern int ipfioctl __P((dev_t, int, caddr_t, int)); 1750 # endif 1751 # endif /* (_BSDI_VERSION >= 199510) */ 1752 # endif /* __ sgi */ 1753 # endif /* MENTAT */ 1754 1755 # if defined(__FreeBSD_version) 1756 extern int ipf_pfil_hook __P((void)); 1757 extern int ipf_pfil_unhook __P((void)); 1758 extern void ipf_event_reg __P((void)); 1759 extern void ipf_event_dereg __P((void)); 1760 # endif 1761 1762 # if defined(INSTANCES) 1763 extern ipf_main_softc_t *ipf_find_softc __P((u_long)); 1764 extern int ipf_set_loopback __P((ipf_main_softc_t *, ipftuneable_t *, 1765 ipftuneval_t *)); 1766 # endif 1767 1768 #endif /* #ifndef _KERNEL */ 1769 1770 extern char *memstr __P((const char *, char *, size_t, size_t)); 1771 extern int count4bits __P((u_32_t)); 1772 #ifdef USE_INET6 1773 extern int count6bits __P((u_32_t *)); 1774 #endif 1775 extern int frrequest __P((ipf_main_softc_t *, int, ioctlcmd_t, caddr_t, 1776 int, int)); 1777 extern char *getifname __P((struct ifnet *)); 1778 extern int ipfattach __P((ipf_main_softc_t *)); 1779 extern int ipfdetach __P((ipf_main_softc_t *)); 1780 extern u_short ipf_cksum __P((u_short *, int)); 1781 extern int copyinptr __P((ipf_main_softc_t *, void *, void *, size_t)); 1782 extern int copyoutptr __P((ipf_main_softc_t *, void *, void *, size_t)); 1783 extern int ipf_fastroute __P((mb_t *, mb_t **, fr_info_t *, frdest_t *)); 1784 extern int ipf_inject __P((fr_info_t *, mb_t *)); 1785 extern int ipf_inobj __P((ipf_main_softc_t *, void *, ipfobj_t *, 1786 void *, int)); 1787 extern int ipf_inobjsz __P((ipf_main_softc_t *, void *, void *, 1788 int , int)); 1789 extern int ipf_ioctlswitch __P((ipf_main_softc_t *, int, void *, 1790 ioctlcmd_t, int, int, void *)); 1791 extern int ipf_ipf_ioctl __P((ipf_main_softc_t *, caddr_t, ioctlcmd_t, 1792 int, int, void *)); 1793 extern int ipf_ipftune __P((ipf_main_softc_t *, ioctlcmd_t, void *)); 1794 extern int ipf_matcharray_load __P((ipf_main_softc_t *, caddr_t, 1795 ipfobj_t *, int **)); 1796 extern int ipf_matcharray_verify __P((int *, int)); 1797 extern int ipf_outobj __P((ipf_main_softc_t *, void *, void *, int)); 1798 extern int ipf_outobjk __P((ipf_main_softc_t *, ipfobj_t *, void *)); 1799 extern int ipf_outobjsz __P((ipf_main_softc_t *, void *, void *, 1800 int, int)); 1801 extern void *ipf_pullup __P((mb_t *, fr_info_t *, int)); 1802 extern int ipf_resolvedest __P((ipf_main_softc_t *, char *, 1803 struct frdest *, int)); 1804 extern int ipf_resolvefunc __P((ipf_main_softc_t *, void *)); 1805 extern void *ipf_resolvenic __P((ipf_main_softc_t *, char *, int)); 1806 extern int ipf_send_icmp_err __P((int, fr_info_t *, int)); 1807 extern int ipf_send_reset __P((fr_info_t *)); 1808 #if (defined(__FreeBSD_version) && (__FreeBSD_version < 501000)) || \ 1809 !defined(_KERNEL) || defined(linux) 1810 extern int ppsratecheck __P((struct timeval *, int *, int)); 1811 #endif 1812 extern void ipf_apply_timeout __P((ipftq_t *, u_int)); 1813 extern ipftq_t *ipf_addtimeoutqueue __P((ipf_main_softc_t *, ipftq_t **, 1814 u_int)); 1815 extern void ipf_deletequeueentry __P((ipftqent_t *)); 1816 extern int ipf_deletetimeoutqueue __P((ipftq_t *)); 1817 extern void ipf_freetimeoutqueue __P((ipf_main_softc_t *, ipftq_t *)); 1818 extern void ipf_movequeue __P((u_long, ipftqent_t *, ipftq_t *, 1819 ipftq_t *)); 1820 extern void ipf_queueappend __P((u_long, ipftqent_t *, ipftq_t *, void *)); 1821 extern void ipf_queueback __P((u_long, ipftqent_t *)); 1822 extern int ipf_queueflush __P((ipf_main_softc_t *, ipftq_delete_fn_t, 1823 ipftq_t *, ipftq_t *, u_int *, int, int)); 1824 extern void ipf_queuefront __P((ipftqent_t *)); 1825 extern int ipf_settimeout_tcp __P((ipftuneable_t *, ipftuneval_t *, 1826 ipftq_t *)); 1827 extern int ipf_checkv4sum __P((fr_info_t *)); 1828 extern int ipf_checkl4sum __P((fr_info_t *)); 1829 extern int ipf_ifpfillv4addr __P((int, struct sockaddr_in *, 1830 struct sockaddr_in *, struct in_addr *, 1831 struct in_addr *)); 1832 extern int ipf_coalesce __P((fr_info_t *)); 1833 #ifdef USE_INET6 1834 extern int ipf_checkv6sum __P((fr_info_t *)); 1835 extern int ipf_ifpfillv6addr __P((int, struct sockaddr_in6 *, 1836 struct sockaddr_in6 *, i6addr_t *, 1837 i6addr_t *)); 1838 #endif 1839 1840 extern int ipf_tune_add __P((ipf_main_softc_t *, ipftuneable_t *)); 1841 extern int ipf_tune_add_array __P((ipf_main_softc_t *, ipftuneable_t *)); 1842 extern int ipf_tune_del __P((ipf_main_softc_t *, ipftuneable_t *)); 1843 extern int ipf_tune_del_array __P((ipf_main_softc_t *, ipftuneable_t *)); 1844 extern int ipf_tune_array_link __P((ipf_main_softc_t *, ipftuneable_t *)); 1845 extern int ipf_tune_array_unlink __P((ipf_main_softc_t *, 1846 ipftuneable_t *)); 1847 extern ipftuneable_t *ipf_tune_array_copy __P((void *, size_t, 1848 ipftuneable_t *)); 1849 1850 extern int ipf_pr_pullup __P((fr_info_t *, int)); 1851 1852 extern int ipf_flush __P((ipf_main_softc_t *, minor_t, int)); 1853 extern frgroup_t *ipf_group_add __P((ipf_main_softc_t *, char *, void *, 1854 u_32_t, minor_t, int)); 1855 extern int ipf_group_del __P((ipf_main_softc_t *, char *, minor_t, int)); 1856 extern int ipf_derefrule __P((ipf_main_softc_t *, frentry_t **)); 1857 extern frgroup_t *ipf_findgroup __P((ipf_main_softc_t *, char *, minor_t, 1858 int, frgroup_t ***)); 1859 1860 extern int ipf_log_init __P((void)); 1861 extern int ipf_log_bytesused __P((ipf_main_softc_t *, int)); 1862 extern int ipf_log_canread __P((ipf_main_softc_t *, int)); 1863 extern int ipf_log_clear __P((ipf_main_softc_t *, minor_t)); 1864 extern u_long ipf_log_failures __P((ipf_main_softc_t *, int)); 1865 extern int ipf_log_read __P((ipf_main_softc_t *, minor_t, uio_t *)); 1866 extern int ipf_log_items __P((ipf_main_softc_t *, int, fr_info_t *, 1867 void **, size_t *, int *, int)); 1868 extern u_long ipf_log_logok __P((ipf_main_softc_t *, int)); 1869 extern void ipf_log_unload __P((ipf_main_softc_t *)); 1870 extern int ipf_log_pkt __P((fr_info_t *, u_int)); 1871 extern int ipf_log_pkt __P((fr_info_t *, u_int)); 1872 1873 extern frentry_t *ipf_acctpkt __P((fr_info_t *, u_32_t *)); 1874 extern u_short fr_cksum __P((fr_info_t *, ip_t *, int, void *)); 1875 extern void ipf_deinitialise __P((ipf_main_softc_t *)); 1876 extern int ipf_deliverlocal __P((ipf_main_softc_t *, int, void *, 1877 i6addr_t *)); 1878 extern frentry_t *ipf_dstgrpmap __P((fr_info_t *, u_32_t *)); 1879 extern void ipf_fixskip __P((frentry_t **, frentry_t *, int)); 1880 extern void ipf_forgetifp __P((ipf_main_softc_t *, void *)); 1881 extern frentry_t *ipf_getrulen __P((ipf_main_softc_t *, int, char *, 1882 u_32_t)); 1883 extern int ipf_ifpaddr __P((ipf_main_softc_t *, int, int, void *, 1884 i6addr_t *, i6addr_t *)); 1885 extern int ipf_initialise __P((void)); 1886 extern int ipf_lock __P((caddr_t, int *)); 1887 extern int ipf_makefrip __P((int, ip_t *, fr_info_t *)); 1888 extern int ipf_matchtag __P((ipftag_t *, ipftag_t *)); 1889 extern int ipf_matchicmpqueryreply __P((int, icmpinfo_t *, 1890 struct icmp *, int)); 1891 extern u_32_t ipf_newisn __P((fr_info_t *)); 1892 extern u_short ipf_nextipid __P((fr_info_t *)); 1893 extern u_int ipf_pcksum __P((fr_info_t *, int, u_int)); 1894 extern void ipf_rule_expire __P((ipf_main_softc_t *)); 1895 extern int ipf_scanlist __P((fr_info_t *, u_32_t)); 1896 extern frentry_t *ipf_srcgrpmap __P((fr_info_t *, u_32_t *)); 1897 extern int ipf_tcpudpchk __P((fr_ip_t *, frtuc_t *)); 1898 extern int ipf_verifysrc __P((fr_info_t *fin)); 1899 extern int ipf_zerostats __P((ipf_main_softc_t *, char *)); 1900 extern int ipf_getnextrule __P((ipf_main_softc_t *, ipftoken_t *, 1901 void *)); 1902 extern int ipf_sync __P((ipf_main_softc_t *, void *)); 1903 extern void ipf_token_deref __P((ipf_main_softc_t *, ipftoken_t *)); 1904 extern void ipf_token_expire __P((ipf_main_softc_t *)); 1905 extern ipftoken_t *ipf_token_find __P((ipf_main_softc_t *, int, int, 1906 void *)); 1907 extern void ipf_token_free __P((ipf_main_softc_t *, ipftoken_t *)); 1908 extern int ipf_token_del __P((ipf_main_softc_t *, int, int, 1909 void *)); 1910 extern void ipf_token_mark_complete __P((ipftoken_t *)); 1911 extern int ipf_genericiter __P((ipf_main_softc_t *, void *, 1912 int, void *)); 1913 #ifdef IPFILTER_LOOKUP 1914 extern void *ipf_resolvelookup __P((int, u_int, u_int, 1915 lookupfunc_t *)); 1916 #endif 1917 extern u_32_t ipf_random __P((void)); 1918 1919 extern int ipf_main_load __P((void)); 1920 extern void *ipf_main_soft_create __P((void *)); 1921 extern void ipf_main_soft_destroy __P((ipf_main_softc_t *, 1922 void *arg)); 1923 extern int ipf_main_soft_init __P((ipf_main_softc_t *)); 1924 extern int ipf_main_soft_fini __P((ipf_main_softc_t *)); 1925 extern int ipf_main_unload __P((void)); 1926 extern int ipf_load_all __P((void)); 1927 extern int ipf_unload_all __P((void)); 1928 extern void ipf_destroy_all __P((ipf_main_softc_t *)); 1929 extern ipf_main_softc_t *ipf_create_all __P((void *)); 1930 extern int ipf_init_all __P((ipf_main_softc_t *)); 1931 extern int ipf_fini_all __P((ipf_main_softc_t *)); 1932 extern void ipf_log_soft_destroy __P((ipf_main_softc_t *, void *)); 1933 extern void *ipf_log_soft_create __P((ipf_main_softc_t *)); 1934 extern int ipf_log_soft_init __P((ipf_main_softc_t *, void *)); 1935 extern int ipf_log_soft_fini __P((ipf_main_softc_t *, void *)); 1936 extern int ipf_log_main_load __P((void)); 1937 extern int ipf_log_main_unload __P((void)); 1938 1939 1940 extern char ipfilter_version[]; 1941 #ifdef USE_INET6 1942 extern int icmptoicmp6types[ICMP_MAXTYPE+1]; 1943 extern int icmptoicmp6unreach[ICMP_MAX_UNREACH]; 1944 extern int icmpreplytype6[ICMP6_MAXTYPE + 1]; 1945 #endif 1946 #ifdef IPFILTER_COMPAT 1947 extern int ipf_in_compat __P((ipf_main_softc_t *, ipfobj_t *, void *,int)); 1948 extern int ipf_out_compat __P((ipf_main_softc_t *, ipfobj_t *, void *)); 1949 #endif 1950 extern int icmpreplytype4[ICMP_MAXTYPE + 1]; 1951 1952 extern int ipf_ht_node_add __P((ipf_main_softc_t *, host_track_t *, 1953 int, i6addr_t *)); 1954 extern int ipf_ht_node_del __P((host_track_t *, int, i6addr_t *)); 1955 extern void ipf_rb_ht_flush __P((host_track_t *)); 1956 extern void ipf_rb_ht_freenode __P((host_node_t *, void *)); 1957 extern void ipf_rb_ht_init __P((host_track_t *)); 1958 1959 #endif /* __IP_FIL_H__ */ 1960
Indexes created Tue Sep 30 20:09:53 GMT 2025