ip_fil.h revision 1.3
1 /* $NetBSD: ip_fil.h,v 1.3 2012/07/22 14:27:51 darrenr 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: ip_fil.h,v 1.1.1.2 2012/07/22 13:45:13 darrenr Exp 10 */ 11 12 #ifndef _NETINET_IP_FIL_H_ 13 #define _NETINET_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 #if defined(__STDC__) || defined(__GNUC__) || defined(_AIX51) 37 # define SIOCADAFR _IOW('r', 60, struct ipfobj) 38 # define SIOCRMAFR _IOW('r', 61, struct ipfobj) 39 # define SIOCSETFF _IOW('r', 62, u_int) 40 # define SIOCGETFF _IOR('r', 63, u_int) 41 # define SIOCGETFS _IOWR('r', 64, struct ipfobj) 42 # define SIOCIPFFL _IOWR('r', 65, int) 43 # define SIOCIPFFB _IOR('r', 66, int) 44 # define SIOCADIFR _IOW('r', 67, struct ipfobj) 45 # define SIOCRMIFR _IOW('r', 68, struct ipfobj) 46 # define SIOCSWAPA _IOR('r', 69, u_int) 47 # define SIOCINAFR _IOW('r', 70, struct ipfobj) 48 # define SIOCINIFR _IOW('r', 71, struct ipfobj) 49 # define SIOCFRENB _IOW('r', 72, u_int) 50 # define SIOCFRSYN _IOW('r', 73, u_int) 51 # define SIOCFRZST _IOWR('r', 74, struct ipfobj) 52 # define SIOCZRLST _IOWR('r', 75, struct ipfobj) 53 # define SIOCAUTHW _IOWR('r', 76, struct ipfobj) 54 # define SIOCAUTHR _IOWR('r', 77, struct ipfobj) 55 # define SIOCSTAT1 _IOWR('r', 78, struct ipfobj) 56 # define SIOCSTLCK _IOWR('r', 79, u_int) 57 # define SIOCSTPUT _IOWR('r', 80, struct ipfobj) 58 # define SIOCSTGET _IOWR('r', 81, struct ipfobj) 59 # define SIOCSTGSZ _IOWR('r', 82, struct ipfobj) 60 # define SIOCSTAT2 _IOWR('r', 83, struct ipfobj) 61 # define SIOCSETLG _IOWR('r', 84, int) 62 # define SIOCGETLG _IOWR('r', 85, int) 63 # define SIOCFUNCL _IOWR('r', 86, struct ipfunc_resolve) 64 # define SIOCIPFGETNEXT _IOWR('r', 87, struct ipfobj) 65 # define SIOCIPFGET _IOWR('r', 88, struct ipfobj) 66 # define SIOCIPFSET _IOWR('r', 89, struct ipfobj) 67 # define SIOCIPFL6 _IOWR('r', 90, int) 68 # define SIOCIPFITER _IOWR('r', 91, struct ipfobj) 69 # define SIOCGENITER _IOWR('r', 92, struct ipfobj) 70 # define SIOCGTABL _IOWR('r', 93, struct ipfobj) 71 # define SIOCIPFDELTOK _IOWR('r', 94, int) 72 # define SIOCLOOKUPITER _IOWR('r', 95, struct ipfobj) 73 # define SIOCGTQTAB _IOWR('r', 96, struct ipfobj) 74 # define SIOCMATCHFLUSH _IOWR('r', 97, struct ipfobj) 75 # define SIOCIPFINTERROR _IOR('r', 98, int) 76 #else 77 # define SIOCADAFR _IOW(r, 60, struct ipfobj) 78 # define SIOCRMAFR _IOW(r, 61, struct ipfobj) 79 # define SIOCSETFF _IOW(r, 62, u_int) 80 # define SIOCGETFF _IOR(r, 63, u_int) 81 # define SIOCGETFS _IOWR(r, 64, struct ipfobj) 82 # define SIOCIPFFL _IOWR(r, 65, int) 83 # define SIOCIPFFB _IOR(r, 66, int) 84 # define SIOCADIFR _IOW(r, 67, struct ipfobj) 85 # define SIOCRMIFR _IOW(r, 68, struct ipfobj) 86 # define SIOCSWAPA _IOR(r, 69, u_int) 87 # define SIOCINAFR _IOW(r, 70, struct ipfobj) 88 # define SIOCINIFR _IOW(r, 71, struct ipfobj) 89 # define SIOCFRENB _IOW(r, 72, u_int) 90 # define SIOCFRSYN _IOW(r, 73, u_int) 91 # define SIOCFRZST _IOWR(r, 74, struct ipfobj) 92 # define SIOCZRLST _IOWR(r, 75, struct ipfobj) 93 # define SIOCAUTHW _IOWR(r, 76, struct ipfobj) 94 # define SIOCAUTHR _IOWR(r, 77, struct ipfobj) 95 # define SIOCSTAT1 _IOWR(r, 78, struct ipfobj) 96 # define SIOCSTLCK _IOWR(r, 79, u_int) 97 # define SIOCSTPUT _IOWR(r, 80, struct ipfobj) 98 # define SIOCSTGET _IOWR(r, 81, struct ipfobj) 99 # define SIOCSTGSZ _IOWR(r, 82, struct ipfobj) 100 # define SIOCSTAT2 _IOWR(r, 83, struct ipfobj) 101 # define SIOCSETLG _IOWR(r, 84, int) 102 # define SIOCGETLG _IOWR(r, 85, int) 103 # define SIOCFUNCL _IOWR(r, 86, struct ipfunc_resolve) 104 # define SIOCIPFGETNEXT _IOWR(r, 87, struct ipfobj) 105 # define SIOCIPFGET _IOWR(r, 88, struct ipfobj) 106 # define SIOCIPFSET _IOWR(r, 89, struct ipfobj) 107 # define SIOCIPFL6 _IOWR(r, 90, int) 108 # define SIOCIPFITER _IOWR(r, 91, struct ipfobj) 109 # define SIOCGENITER _IOWR(r, 92, struct ipfobj) 110 # define SIOCGTABL _IOWR(r, 93, struct ipfobj) 111 # define SIOCIPFDELTOK _IOWR(r, 94, int) 112 # define SIOCLOOKUPITER _IOWR(r, 95, struct ipfobj) 113 # define SIOCGTQTAB _IOWR(r, 96, struct ipfobj) 114 # define SIOCMATCHFLUSH _IOWR(r, 97, struct ipfobj) 115 # define SIOCIPFINTERROR _IOR(r, 98, int) 116 #endif 117 #define SIOCADDFR SIOCADAFR 118 #define SIOCDELFR SIOCRMAFR 119 #define SIOCINSFR SIOCINAFR 120 #define SIOCATHST SIOCSTAT1 121 #define SIOCGFRST SIOCSTAT2 122 123 124 struct ipscan; 125 struct ifnet; 126 struct ipf_main_softc_s; 127 128 typedef int (* lookupfunc_t)(struct ipf_main_softc_s *, void *, 129 int, void *, u_int); 130 131 /* 132 * i6addr is used as a container for both IPv4 and IPv6 addresses, as well 133 * as other types of objects, depending on its qualifier. 134 */ 135 #ifdef USE_INET6 136 typedef union i6addr { 137 u_32_t i6[4]; 138 struct in_addr in4; 139 struct in6_addr in6; 140 void *vptr[2]; 141 lookupfunc_t lptr[2]; 142 struct { 143 u_short type; 144 u_short subtype; 145 int name; 146 } i6un; 147 } i6addr_t; 148 #else 149 typedef union i6addr { 150 u_32_t i6[4]; 151 struct in_addr in4; 152 void *vptr[2]; 153 lookupfunc_t lptr[2]; 154 struct { 155 u_short type; 156 u_short subtype; 157 int name; 158 } i6un; 159 } i6addr_t; 160 #endif 161 162 #define in4_addr in4.s_addr 163 #define iplookupnum i6[1] 164 #define iplookupname i6un.name 165 #define iplookuptype i6un.type 166 #define iplookupsubtype i6un.subtype 167 /* 168 * NOTE: These DO overlap the above on 64bit systems and this IS recognised. 169 */ 170 #define iplookupptr vptr[0] 171 #define iplookupfunc lptr[1] 172 173 /* Avoid casting to a type presuming 64-bit alignment. */ 174 #define I60(x) (((u_32_t *)(x))[0]) 175 #define I61(x) (((u_32_t *)(x))[1]) 176 #define I62(x) (((u_32_t *)(x))[2]) 177 #define I63(x) (((u_32_t *)(x))[3]) 178 #define HI60(x) ntohl(((u_32_t *)(x))[0]) 179 #define HI61(x) ntohl(((u_32_t *)(x))[1]) 180 #define HI62(x) ntohl(((u_32_t *)(x))[2]) 181 #define HI63(x) ntohl(((u_32_t *)(x))[3]) 182 183 #define IP6_EQ(a,b) ((I63(a) == I63(b)) && (I62(a) == I62(b)) && \ 184 (I61(a) == I61(b)) && (I60(a) == I60(b))) 185 #define IP6_NEQ(a,b) ((I63(a) != I63(b)) || (I62(a) != I62(b)) || \ 186 (I61(a) != I61(b)) || (I60(a) != I60(b))) 187 #define IP6_ISZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) == 0) 188 #define IP6_NOTZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) != 0) 189 #define IP6_ISONES(a) ((I63(a) == 0xffffffff) && (I62(a) == 0xffffffff) && \ 190 (I61(a) == 0xffffffff) && (I60(a) == 0xffffffff)) 191 #define IP6_GT(a,b) (ntohl(HI60(a)) > ntohl(HI60(b)) || \ 192 (HI60(a) == HI60(b) && \ 193 (ntohl(HI61(a)) > ntohl(HI61(b)) || \ 194 (HI61(a) == HI61(b) && \ 195 (ntohl(HI62(a)) > ntohl(HI62(b)) || \ 196 (HI62(a) == HI62(b) && \ 197 ntohl(HI63(a)) > ntohl(HI63(b)))))))) 198 #define IP6_LT(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 NLADD(n,x) htonl(ntohl(n) + (x)) 206 #define IP6_INC(a) \ 207 do { u_32_t *_i6 = (u_32_t *)(a); \ 208 _i6[3] = NLADD(_i6[3], 1); \ 209 if (_i6[3] == 0) { \ 210 _i6[2] = NLADD(_i6[2], 1); \ 211 if (_i6[2] == 0) { \ 212 _i6[1] = NLADD(_i6[1], 1); \ 213 if (_i6[1] == 0) { \ 214 _i6[0] = NLADD(_i6[0], 1); \ 215 } \ 216 } \ 217 } \ 218 } while (0) 219 #define IP6_ADD(a,x,d) \ 220 do { i6addr_t *_s = (i6addr_t *)(a); \ 221 i6addr_t *_d = (i6addr_t *)(d); \ 222 _d->i6[0] = NLADD(_s->i6[0], x); \ 223 if (ntohl(_d->i6[0]) < ntohl(_s->i6[0])) { \ 224 _d->i6[1] = NLADD(_d->i6[1], 1); \ 225 if (ntohl(_d->i6[1]) < ntohl(_s->i6[1])) { \ 226 _d->i6[2] = NLADD(_d->i6[2], 1); \ 227 if (ntohl(_d->i6[2]) < ntohl(_s->i6[2])) { \ 228 _d->i6[3] = NLADD(_d->i6[3], 1); \ 229 } \ 230 } \ 231 } \ 232 } while (0) 233 #define IP6_AND(a,b,d) do { i6addr_t *_s1 = (i6addr_t *)(a); \ 234 i6addr_t *_s2 = (i6addr_t *)(b); \ 235 i6addr_t *_d = (i6addr_t *)(d); \ 236 _d->i6[0] = _s1->i6[0] & _s2->i6[0]; \ 237 _d->i6[1] = _s1->i6[1] & _s2->i6[1]; \ 238 _d->i6[2] = _s1->i6[2] & _s2->i6[2]; \ 239 _d->i6[3] = _s1->i6[3] & _s2->i6[3]; \ 240 } while (0) 241 #define IP6_ANDASSIGN(a,m) \ 242 do { i6addr_t *_d = (i6addr_t *)(a); \ 243 i6addr_t *_m = (i6addr_t *)(m); \ 244 _d->i6[0] &= _m->i6[0]; \ 245 _d->i6[1] &= _m->i6[1]; \ 246 _d->i6[2] &= _m->i6[2]; \ 247 _d->i6[3] &= _m->i6[3]; \ 248 } while (0) 249 #define IP6_MASKEQ(a,m,b) \ 250 (((I60(a) & I60(m)) == I60(b)) && \ 251 ((I61(a) & I61(m)) == I61(b)) && \ 252 ((I62(a) & I62(m)) == I62(b)) && \ 253 ((I63(a) & I63(m)) == I63(b))) 254 #define IP6_MASKNEQ(a,m,b) \ 255 (((I60(a) & I60(m)) != I60(b)) || \ 256 ((I61(a) & I61(m)) != I61(b)) || \ 257 ((I62(a) & I62(m)) != I62(b)) || \ 258 ((I63(a) & I63(m)) != I63(b))) 259 #define IP6_MERGE(a,b,c) \ 260 do { i6addr_t *_d, *_s1, *_s2; \ 261 _d = (i6addr_t *)(a); \ 262 _s1 = (i6addr_t *)(b); \ 263 _s2 = (i6addr_t *)(c); \ 264 _d->i6[0] |= _s1->i6[0] & ~_s2->i6[0]; \ 265 _d->i6[1] |= _s1->i6[1] & ~_s2->i6[1]; \ 266 _d->i6[2] |= _s1->i6[2] & ~_s2->i6[2]; \ 267 _d->i6[3] |= _s1->i6[3] & ~_s2->i6[3]; \ 268 } while (0) 269 #define IP6_MASK(a,b,c) \ 270 do { i6addr_t *_d, *_s1, *_s2; \ 271 _d = (i6addr_t *)(a); \ 272 _s1 = (i6addr_t *)(b); \ 273 _s2 = (i6addr_t *)(c); \ 274 _d->i6[0] = _s1->i6[0] & ~_s2->i6[0]; \ 275 _d->i6[1] = _s1->i6[1] & ~_s2->i6[1]; \ 276 _d->i6[2] = _s1->i6[2] & ~_s2->i6[2]; \ 277 _d->i6[3] = _s1->i6[3] & ~_s2->i6[3]; \ 278 } while (0) 279 #define IP6_SETONES(a) \ 280 do { i6addr_t *_d = (i6addr_t *)(a); \ 281 _d->i6[0] = 0xffffffff; \ 282 _d->i6[1] = 0xffffffff; \ 283 _d->i6[2] = 0xffffffff; \ 284 _d->i6[3] = 0xffffffff; \ 285 } while (0) 286 287 typedef union ipso_u { 288 u_short ipso_ripso[2]; 289 u_32_t ipso_doi; 290 } ipso_t; 291 292 typedef struct fr_ip { 293 u_32_t fi_v:4; /* IP version */ 294 u_32_t fi_xx:4; /* spare */ 295 u_32_t fi_tos:8; /* IP packet TOS */ 296 u_32_t fi_ttl:8; /* IP packet TTL */ 297 u_32_t fi_p:8; /* IP packet protocol */ 298 u_32_t fi_optmsk; /* bitmask composed from IP options */ 299 i6addr_t fi_src; /* source address from packet */ 300 i6addr_t fi_dst; /* destination address from packet */ 301 ipso_t fi_ipso; /* IP security options */ 302 u_32_t fi_flx; /* packet flags */ 303 u_32_t fi_tcpmsk; /* TCP options set/reset */ 304 u_32_t fi_ports[2]; /* TCP ports */ 305 u_char fi_tcpf; /* TCP flags */ 306 u_char fi_sensitivity; 307 u_char fi_xxx[2]; /* pad */ 308 } fr_ip_t; 309 310 /* 311 * For use in fi_flx 312 */ 313 #define FI_TCPUDP 0x0001 /* TCP/UCP implied comparison*/ 314 #define FI_OPTIONS 0x0002 315 #define FI_FRAG 0x0004 316 #define FI_SHORT 0x0008 317 #define FI_NATED 0x0010 318 #define FI_MULTICAST 0x0020 319 #define FI_BROADCAST 0x0040 320 #define FI_MBCAST 0x0080 321 #define FI_STATE 0x0100 322 #define FI_BADNAT 0x0200 323 #define FI_BAD 0x0400 324 #define FI_OOW 0x0800 /* Out of state window, else match */ 325 #define FI_ICMPERR 0x1000 326 #define FI_FRAGBODY 0x2000 327 #define FI_BADSRC 0x4000 328 #define FI_LOWTTL 0x8000 329 #define FI_CMP 0x5cfe3 /* Not FI_FRAG,FI_NATED,FI_FRAGTAIL */ 330 #define FI_ICMPCMP 0x0003 /* Flags we can check for ICMP error packets */ 331 #define FI_WITH 0x5effe /* Not FI_TCPUDP */ 332 #define FI_V6EXTHDR 0x10000 333 #define FI_COALESCE 0x20000 334 #define FI_NEWNAT 0x40000 335 #define FI_ICMPQUERY 0x80000 336 #define FI_ENCAP 0x100000 /* encap/decap with NAT */ 337 #define FI_AH 0x200000 /* AH header present */ 338 #define FI_DOCKSUM 0x10000000 /* Proxy wants L4 recalculation */ 339 #define FI_NOCKSUM 0x20000000 /* don't do a L4 checksum validation */ 340 #define FI_NOWILD 0x40000000 /* Do not do wildcard searches */ 341 #define FI_IGNORE 0x80000000 342 343 #define fi_secmsk fi_ipso.ipso_ripso[0] 344 #define fi_auth fi_ipso.ipso_ripso[1] 345 #define fi_doi fi_ipso.ipso_doi 346 #define fi_saddr fi_src.in4.s_addr 347 #define fi_daddr fi_dst.in4.s_addr 348 #define fi_srcnum fi_src.iplookupnum 349 #define fi_dstnum fi_dst.iplookupnum 350 #define fi_srcname fi_src.iplookupname 351 #define fi_dstname fi_dst.iplookupname 352 #define fi_srctype fi_src.iplookuptype 353 #define fi_dsttype fi_dst.iplookuptype 354 #define fi_srcsubtype fi_src.iplookupsubtype 355 #define fi_dstsubtype fi_dst.iplookupsubtype 356 #define fi_srcptr fi_src.iplookupptr 357 #define fi_dstptr fi_dst.iplookupptr 358 #define fi_srcfunc fi_src.iplookupfunc 359 #define fi_dstfunc fi_dst.iplookupfunc 360 361 362 /* 363 * These are both used by the state and NAT code to indicate that one port or 364 * the other should be treated as a wildcard. 365 * NOTE: When updating, check bit masks in ip_state.h and update there too. 366 */ 367 #define SI_W_SPORT 0x00000100 368 #define SI_W_DPORT 0x00000200 369 #define SI_WILDP (SI_W_SPORT|SI_W_DPORT) 370 #define SI_W_SADDR 0x00000400 371 #define SI_W_DADDR 0x00000800 372 #define SI_WILDA (SI_W_SADDR|SI_W_DADDR) 373 #define SI_NEWFR 0x00001000 374 #define SI_CLONE 0x00002000 375 #define SI_CLONED 0x00004000 376 #define SI_NEWCLONE 0x00008000 377 378 typedef struct { 379 u_short fda_ports[2]; 380 u_char fda_tcpf; /* TCP header flags (SYN, ACK, etc) */ 381 } frdat_t; 382 383 typedef enum fr_breasons_e { 384 FRB_BLOCKED = 0, 385 FRB_LOGFAIL = 1, 386 FRB_PPSRATE = 2, 387 FRB_JUMBO = 3, 388 FRB_MAKEFRIP = 4, 389 FRB_STATEADD = 5, 390 FRB_UPDATEIPID = 6, 391 FRB_LOGFAIL2 = 7, 392 FRB_DECAPFRIP = 8, 393 FRB_AUTHNEW = 9, 394 FRB_AUTHCAPTURE = 10, 395 FRB_COALESCE = 11, 396 FRB_PULLUP = 12, 397 FRB_AUTHFEEDBACK = 13, 398 FRB_BADFRAG = 14, 399 FRB_NATV4 = 15, 400 FRB_NATV6 = 16, 401 } fr_breason_t; 402 403 #define FRB_MAX_VALUE 16 404 405 typedef enum ipf_cksum_e { 406 FI_CK_BAD = -1, 407 FI_CK_NEEDED = 0, 408 FI_CK_SUMOK = 1, 409 FI_CK_L4PART = 2, 410 FI_CK_L4FULL = 4 411 } ipf_cksum_t; 412 413 typedef struct fr_info { 414 void *fin_main_soft; 415 void *fin_ifp; /* interface packet is `on' */ 416 struct frentry *fin_fr; /* last matching rule */ 417 int fin_out; /* in or out ? 1 == out, 0 == in */ 418 fr_ip_t fin_fi; /* IP Packet summary */ 419 frdat_t fin_dat; /* TCP/UDP ports, ICMP code/type */ 420 int fin_dlen; /* length of data portion of packet */ 421 int fin_plen; 422 u_32_t fin_rule; /* rule # last matched */ 423 u_short fin_hlen; /* length of IP header in bytes */ 424 char fin_group[FR_GROUPLEN]; /* group number, -1 for none */ 425 void *fin_dp; /* start of data past IP header */ 426 /* 427 * Fields after fin_dp aren't used for compression of log records. 428 * fin_fi contains the IP version (fin_family) 429 * fin_rule isn't included because adding a new rule can change it but 430 * not change fin_fr. fin_rule is the rule number reported. 431 * It isn't necessary to include fin_crc because that is checked 432 * for explicitly, before calling bcmp. 433 */ 434 u_32_t fin_crc; /* Simple calculation for logging */ 435 int fin_family; /* AF_INET, etc. */ 436 int fin_icode; /* ICMP error to return */ 437 int fin_mtu; /* MTU input for ICMP need-frag */ 438 int fin_rev; /* state only: 1 = reverse */ 439 int fin_ipoff; /* # bytes from buffer start to hdr */ 440 u_32_t fin_id; /* IP packet id field */ 441 u_short fin_l4hlen; /* length of L4 header, if known */ 442 u_short fin_off; 443 int fin_depth; /* Group nesting depth */ 444 int fin_error; /* Error code to return */ 445 ipf_cksum_t fin_cksum; /* -1 = bad, 1 = good, 0 = not done */ 446 fr_breason_t fin_reason; /* why auto blocked */ 447 u_int fin_pktnum; 448 void *fin_nattag; 449 struct frdest *fin_dif; 450 struct frdest *fin_tif; 451 union { 452 ip_t *fip_ip; 453 #ifdef USE_INET6 454 ip6_t *fip_ip6; 455 #endif 456 } fin_ipu; 457 mb_t **fin_mp; /* pointer to pointer to mbuf */ 458 mb_t *fin_m; /* pointer to mbuf */ 459 #ifdef MENTAT 460 mb_t *fin_qfm; /* pointer to mblk where pkt starts */ 461 void *fin_qpi; 462 char fin_ifname[LIFNAMSIZ]; 463 #endif 464 #ifdef __sgi 465 void *fin_hbuf; 466 #endif 467 void *fin_fraghdr; /* pointer to start of ipv6 frag hdr */ 468 } fr_info_t; 469 470 #define fin_ip fin_ipu.fip_ip 471 #define fin_ip6 fin_ipu.fip_ip6 472 #define fin_v fin_fi.fi_v 473 #define fin_p fin_fi.fi_p 474 #define fin_flx fin_fi.fi_flx 475 #define fin_optmsk fin_fi.fi_optmsk 476 #define fin_secmsk fin_fi.fi_secmsk 477 #define fin_doi fin_fi.fi_doi 478 #define fin_auth fin_fi.fi_auth 479 #define fin_src fin_fi.fi_src.in4 480 #define fin_saddr fin_fi.fi_saddr 481 #define fin_dst fin_fi.fi_dst.in4 482 #define fin_daddr fin_fi.fi_daddr 483 #define fin_data fin_fi.fi_ports 484 #define fin_sport fin_fi.fi_ports[0] 485 #define fin_dport fin_fi.fi_ports[1] 486 #define fin_tcpf fin_fi.fi_tcpf 487 #define fin_src6 fin_fi.fi_src 488 #define fin_dst6 fin_fi.fi_dst 489 #define fin_srcip6 fin_fi.fi_src.in6 490 #define fin_dstip6 fin_fi.fi_dst.in6 491 492 #define IPF_IN 0 493 #define IPF_OUT 1 494 495 typedef struct frentry *(*ipfunc_t)(fr_info_t *, u_32_t *); 496 typedef int (*ipfuncinit_t)(struct ipf_main_softc_s *, 497 struct frentry *); 498 499 typedef struct ipfunc_resolve { 500 char ipfu_name[32]; 501 ipfunc_t ipfu_addr; 502 ipfuncinit_t ipfu_init; 503 ipfuncinit_t ipfu_fini; 504 } ipfunc_resolve_t; 505 506 /* 507 * Size for compares on fr_info structures 508 */ 509 #define FI_CSIZE offsetof(fr_info_t, fin_icode) 510 #define FI_LCSIZE offsetof(fr_info_t, fin_dp) 511 512 /* 513 * Size for copying cache fr_info structure 514 */ 515 #define FI_COPYSIZE offsetof(fr_info_t, fin_dp) 516 517 /* 518 * Structure for holding IPFilter's tag information 519 */ 520 #define IPFTAG_LEN 16 521 typedef struct { 522 union { 523 u_32_t iptu_num[4]; 524 char iptu_tag[IPFTAG_LEN]; 525 } ipt_un; 526 int ipt_not; 527 } ipftag_t; 528 529 #define ipt_tag ipt_un.iptu_tag 530 #define ipt_num ipt_un.iptu_num 531 532 /* 533 * Structure to define address for pool lookups. 534 */ 535 typedef struct { 536 u_char adf_len; 537 sa_family_t adf_family; 538 u_char adf_xxx[2]; 539 i6addr_t adf_addr; 540 } addrfamily_t; 541 542 543 RBI_LINK(ipf_rb, host_node_s); 544 545 typedef struct host_node_s { 546 RBI_FIELD(ipf_rb) hn_entry; 547 addrfamily_t hn_addr; 548 int hn_active; 549 } host_node_t; 550 551 typedef RBI_HEAD(ipf_rb, host_node_s) ipf_rb_head_t; 552 553 typedef struct host_track_s { 554 ipf_rb_head_t ht_root; 555 int ht_max_nodes; 556 int ht_max_per_node; 557 int ht_netmask; 558 int ht_cur_nodes; 559 } host_track_t; 560 561 562 typedef enum fr_dtypes_e { 563 FRD_NORMAL = 0, 564 FRD_DSTLIST 565 } fr_dtypes_t; 566 /* 567 * This structure is used to hold information about the next hop for where 568 * to forward a packet. 569 */ 570 typedef struct frdest { 571 void *fd_ptr; 572 addrfamily_t fd_addr; 573 fr_dtypes_t fd_type; 574 int fd_name; 575 int fd_local; 576 } frdest_t; 577 578 #define fd_ip6 fd_addr.adf_addr 579 #define fd_ip fd_ip6.in4 580 581 582 typedef enum fr_ctypes_e { 583 FR_NONE = 0, 584 FR_EQUAL, 585 FR_NEQUAL, 586 FR_LESST, 587 FR_GREATERT, 588 FR_LESSTE, 589 FR_GREATERTE, 590 FR_OUTRANGE, 591 FR_INRANGE, 592 FR_INCRANGE 593 } fr_ctypes_t; 594 595 /* 596 * This structure holds information about a port comparison. 597 */ 598 typedef struct frpcmp { 599 fr_ctypes_t frp_cmp; /* data for port comparisons */ 600 u_32_t frp_port; /* top port for <> and >< */ 601 u_32_t frp_top; /* top port for <> and >< */ 602 } frpcmp_t; 603 604 605 /* 606 * Structure containing all the relevant TCP things that can be checked in 607 * a filter rule. 608 */ 609 typedef struct frtuc { 610 u_char ftu_tcpfm; /* tcp flags mask */ 611 u_char ftu_tcpf; /* tcp flags */ 612 frpcmp_t ftu_src; 613 frpcmp_t ftu_dst; 614 } frtuc_t; 615 616 #define ftu_scmp ftu_src.frp_cmp 617 #define ftu_dcmp ftu_dst.frp_cmp 618 #define ftu_sport ftu_src.frp_port 619 #define ftu_dport ftu_dst.frp_port 620 #define ftu_stop ftu_src.frp_top 621 #define ftu_dtop ftu_dst.frp_top 622 623 #define FR_TCPFMAX 0x3f 624 625 typedef enum fr_atypes_e { 626 FRI_NONE = -1, /* For LHS of NAT */ 627 FRI_NORMAL = 0, /* Normal address */ 628 FRI_DYNAMIC, /* dynamic address */ 629 FRI_LOOKUP, /* address is a pool # */ 630 FRI_RANGE, /* address/mask is a range */ 631 FRI_NETWORK, /* network address from if */ 632 FRI_BROADCAST, /* broadcast address from if */ 633 FRI_PEERADDR, /* Peer address for P-to-P */ 634 FRI_NETMASKED, /* network address with netmask from if */ 635 FRI_SPLIT, /* For NAT compatibility */ 636 FRI_INTERFACE /* address is based on interface name */ 637 } fr_atypes_t; 638 639 /* 640 * This structure makes up what is considered to be the IPFilter specific 641 * matching components of a filter rule, as opposed to the data structures 642 * used to define the result which are in frentry_t and not here. 643 */ 644 typedef struct fripf { 645 fr_ip_t fri_ip; 646 fr_ip_t fri_mip; /* mask structure */ 647 648 u_short fri_icmpm; /* data for ICMP packets (mask) */ 649 u_short fri_icmp; 650 651 frtuc_t fri_tuc; 652 fr_atypes_t fri_satype; /* addres type */ 653 fr_atypes_t fri_datype; /* addres type */ 654 int fri_sifpidx; /* doing dynamic addressing */ 655 int fri_difpidx; /* index into fr_ifps[] to use when */ 656 } fripf_t; 657 658 #define fri_dlookup fri_mip.fi_dst 659 #define fri_slookup fri_mip.fi_src 660 #define fri_dstnum fri_mip.fi_dstnum 661 #define fri_srcnum fri_mip.fi_srcnum 662 #define fri_dstname fri_mip.fi_dstname 663 #define fri_srcname fri_mip.fi_srcname 664 #define fri_dstptr fri_mip.fi_dstptr 665 #define fri_srcptr fri_mip.fi_srcptr 666 667 668 typedef enum fr_rtypes_e { 669 FR_T_NONE = 0, 670 FR_T_IPF, /* IPF structures */ 671 FR_T_BPFOPC, /* BPF opcode */ 672 FR_T_CALLFUNC, /* callout to function in fr_func only */ 673 FR_T_COMPIPF, /* compiled C code */ 674 FR_T_IPFEXPR, /* IPF expression */ 675 FR_T_BUILTIN = 0x40000000, /* rule is in kernel space */ 676 FR_T_IPF_BUILTIN, 677 FR_T_BPFOPC_BUILTIN, 678 FR_T_CALLFUNC_BUILTIN, 679 FR_T_COMPIPF_BUILTIN, 680 FR_T_IPFEXPR_BUILTIN 681 } fr_rtypes_t; 682 683 typedef struct frentry * (* frentfunc_t)(fr_info_t *); 684 685 typedef struct frentry { 686 ipfmutex_t fr_lock; 687 struct frentry *fr_next; 688 struct frentry **fr_pnext; 689 struct frgroup *fr_grp; 690 struct frgroup *fr_grphead; 691 struct frgroup *fr_icmpgrp; 692 struct ipscan *fr_isc; 693 struct frentry *fr_dnext; /* 2 fr_die linked list pointers */ 694 struct frentry **fr_pdnext; 695 void *fr_ifas[4]; 696 void *fr_ptr; /* for use with fr_arg */ 697 int fr_comment; /* text comment for rule */ 698 int fr_size; /* size of this structure */ 699 int fr_ref; /* reference count */ 700 int fr_statecnt; /* state count - for limit rules */ 701 u_32_t fr_die; /* only used on loading the rule */ 702 u_int fr_cksum; /* checksum on filter rules for performance */ 703 /* 704 * The line number from a file is here because we need to be able to 705 * match the rule generated with ``grep rule ipf.conf | ipf -rf -'' 706 * with the rule loaded using ``ipf -f ipf.conf'' - thus it can't be 707 * on the other side of fr_func. 708 */ 709 int fr_flineno; /* line number from conf file */ 710 /* 711 * These are only incremented when a packet matches this rule and 712 * it is the last match 713 */ 714 U_QUAD_T fr_hits; 715 U_QUAD_T fr_bytes; 716 717 /* 718 * For PPS rate limiting 719 * fr_lpu is used to always have the same size for this field, 720 * allocating 64bits for seconds and 32bits for milliseconds. 721 */ 722 union { 723 struct timeval frp_lastpkt; 724 char frp_bytes[12]; 725 } fr_lpu; 726 int fr_curpps; 727 728 union { 729 void *fru_data; 730 char *fru_caddr; 731 fripf_t *fru_ipf; 732 frentfunc_t fru_func; 733 } fr_dun; 734 735 /* 736 * Fields after this may not change whilst in the kernel. 737 */ 738 ipfunc_t fr_func; /* call this function */ 739 int fr_dsize; 740 int fr_pps; 741 fr_rtypes_t fr_type; 742 u_32_t fr_flags; /* per-rule flags && options (see below) */ 743 u_32_t fr_logtag; /* user defined log tag # */ 744 u_32_t fr_collect; /* collection number */ 745 u_int fr_arg; /* misc. numeric arg for rule */ 746 u_int fr_loglevel; /* syslog log facility + priority */ 747 u_char fr_family; 748 u_char fr_icode; /* return ICMP code */ 749 int fr_group; /* group to which this rule belongs */ 750 int fr_grhead; /* group # which this rule starts */ 751 int fr_ifnames[4]; 752 int fr_isctag; 753 int fr_rpc; /* XID Filtering */ 754 ipftag_t fr_nattag; 755 frdest_t fr_tifs[2]; /* "to"/"reply-to" interface */ 756 frdest_t fr_dif; /* duplicate packet interface */ 757 /* 758 * These are all options related to stateful filtering 759 */ 760 host_track_t fr_srctrack; 761 int fr_nostatelog; 762 int fr_statemax; /* max reference count */ 763 int fr_icmphead; /* ICMP group for state options */ 764 u_int fr_age[2]; /* non-TCP state timeouts */ 765 /* 766 * How big is the name buffer at the end? 767 */ 768 int fr_namelen; 769 char fr_names[1]; 770 } frentry_t; 771 772 #define fr_lastpkt fr_lpu.frp_lastpkt 773 #define fr_caddr fr_dun.fru_caddr 774 #define fr_data fr_dun.fru_data 775 #define fr_dfunc fr_dun.fru_func 776 #define fr_ipf fr_dun.fru_ipf 777 #define fr_ip fr_ipf->fri_ip 778 #define fr_mip fr_ipf->fri_mip 779 #define fr_icmpm fr_ipf->fri_icmpm 780 #define fr_icmp fr_ipf->fri_icmp 781 #define fr_tuc fr_ipf->fri_tuc 782 #define fr_satype fr_ipf->fri_satype 783 #define fr_datype fr_ipf->fri_datype 784 #define fr_sifpidx fr_ipf->fri_sifpidx 785 #define fr_difpidx fr_ipf->fri_difpidx 786 #define fr_proto fr_ip.fi_p 787 #define fr_mproto fr_mip.fi_p 788 #define fr_ttl fr_ip.fi_ttl 789 #define fr_mttl fr_mip.fi_ttl 790 #define fr_tos fr_ip.fi_tos 791 #define fr_mtos fr_mip.fi_tos 792 #define fr_tcpfm fr_tuc.ftu_tcpfm 793 #define fr_tcpf fr_tuc.ftu_tcpf 794 #define fr_scmp fr_tuc.ftu_scmp 795 #define fr_dcmp fr_tuc.ftu_dcmp 796 #define fr_dport fr_tuc.ftu_dport 797 #define fr_sport fr_tuc.ftu_sport 798 #define fr_stop fr_tuc.ftu_stop 799 #define fr_dtop fr_tuc.ftu_dtop 800 #define fr_dst fr_ip.fi_dst.in4 801 #define fr_dst6 fr_ip.fi_dst 802 #define fr_daddr fr_ip.fi_dst.in4.s_addr 803 #define fr_src fr_ip.fi_src.in4 804 #define fr_src6 fr_ip.fi_src 805 #define fr_saddr fr_ip.fi_src.in4.s_addr 806 #define fr_dmsk fr_mip.fi_dst.in4 807 #define fr_dmsk6 fr_mip.fi_dst 808 #define fr_dmask fr_mip.fi_dst.in4.s_addr 809 #define fr_smsk fr_mip.fi_src.in4 810 #define fr_smsk6 fr_mip.fi_src 811 #define fr_smask fr_mip.fi_src.in4.s_addr 812 #define fr_dstnum fr_ip.fi_dstnum 813 #define fr_srcnum fr_ip.fi_srcnum 814 #define fr_dlookup fr_ip.fi_dst 815 #define fr_slookup fr_ip.fi_src 816 #define fr_dstname fr_ip.fi_dstname 817 #define fr_srcname fr_ip.fi_srcname 818 #define fr_dsttype fr_ip.fi_dsttype 819 #define fr_srctype fr_ip.fi_srctype 820 #define fr_dstsubtype fr_ip.fi_dstsubtype 821 #define fr_srcsubtype fr_ip.fi_srcsubtype 822 #define fr_dstptr fr_mip.fi_dstptr 823 #define fr_srcptr fr_mip.fi_srcptr 824 #define fr_dstfunc fr_mip.fi_dstfunc 825 #define fr_srcfunc fr_mip.fi_srcfunc 826 #define fr_optbits fr_ip.fi_optmsk 827 #define fr_optmask fr_mip.fi_optmsk 828 #define fr_secbits fr_ip.fi_secmsk 829 #define fr_secmask fr_mip.fi_secmsk 830 #define fr_authbits fr_ip.fi_auth 831 #define fr_authmask fr_mip.fi_auth 832 #define fr_doi fr_ip.fi_doi 833 #define fr_doimask fr_mip.fi_doi 834 #define fr_flx fr_ip.fi_flx 835 #define fr_mflx fr_mip.fi_flx 836 #define fr_ifa fr_ifas[0] 837 #define fr_oifa fr_ifas[2] 838 #define fr_tif fr_tifs[0] 839 #define fr_rif fr_tifs[1] 840 841 #define FR_NOLOGTAG 0 842 843 #define FR_CMPSIZ (sizeof(struct frentry) - \ 844 offsetof(struct frentry, fr_func)) 845 #define FR_NAME(_f, _n) (_f)->fr_names + (_f)->_n 846 847 848 /* 849 * fr_flags 850 */ 851 #define FR_BLOCK 0x00001 /* do not allow packet to pass */ 852 #define FR_PASS 0x00002 /* allow packet to pass */ 853 #define FR_AUTH 0x00003 /* use authentication */ 854 #define FR_PREAUTH 0x00004 /* require preauthentication */ 855 #define FR_ACCOUNT 0x00005 /* Accounting rule */ 856 #define FR_SKIP 0x00006 /* skip rule */ 857 #define FR_DECAPSULATE 0x00008 /* decapsulate rule */ 858 #define FR_CALL 0x00009 /* call rule */ 859 #define FR_CMDMASK 0x0000f 860 #define FR_LOG 0x00010 /* Log */ 861 #define FR_LOGB 0x00011 /* Log-fail */ 862 #define FR_LOGP 0x00012 /* Log-pass */ 863 #define FR_LOGMASK (FR_LOG|FR_CMDMASK) 864 #define FR_CALLNOW 0x00020 /* call another function (fr_func) if matches */ 865 #define FR_NOTSRCIP 0x00040 866 #define FR_NOTDSTIP 0x00080 867 #define FR_QUICK 0x00100 /* match & stop processing list */ 868 #define FR_KEEPFRAG 0x00200 /* keep fragment information */ 869 #define FR_KEEPSTATE 0x00400 /* keep `connection' state information */ 870 #define FR_FASTROUTE 0x00800 /* bypass normal routing */ 871 #define FR_RETRST 0x01000 /* Return TCP RST packet - reset connection */ 872 #define FR_RETICMP 0x02000 /* Return ICMP unreachable packet */ 873 #define FR_FAKEICMP 0x03000 /* Return ICMP unreachable with fake source */ 874 #define FR_OUTQUE 0x04000 /* outgoing packets */ 875 #define FR_INQUE 0x08000 /* ingoing packets */ 876 #define FR_LOGBODY 0x10000 /* Log the body */ 877 #define FR_LOGFIRST 0x20000 /* Log the first byte if state held */ 878 #define FR_LOGORBLOCK 0x40000 /* block the packet if it can't be logged */ 879 #define FR_STLOOSE 0x80000 /* loose state checking */ 880 #define FR_FRSTRICT 0x100000 /* strict frag. cache */ 881 #define FR_STSTRICT 0x200000 /* strict keep state */ 882 #define FR_NEWISN 0x400000 /* new ISN for outgoing TCP */ 883 #define FR_NOICMPERR 0x800000 /* do not match ICMP errors in state */ 884 #define FR_STATESYNC 0x1000000 /* synchronize state to slave */ 885 #define FR_COPIED 0x2000000 /* copied from user space */ 886 #define FR_INACTIVE 0x4000000 /* only used when flush'ing rules */ 887 #define FR_NOMATCH 0x8000000 /* no match occured */ 888 /* 0x10000000 FF_LOGPASS */ 889 /* 0x20000000 FF_LOGBLOCK */ 890 /* 0x40000000 FF_LOGNOMATCH */ 891 /* 0x80000000 FF_BLOCKNONIP */ 892 893 #define FR_RETMASK (FR_RETICMP|FR_RETRST|FR_FAKEICMP) 894 #define FR_ISBLOCK(x) (((x) & FR_CMDMASK) == FR_BLOCK) 895 #define FR_ISPASS(x) (((x) & FR_CMDMASK) == FR_PASS) 896 #define FR_ISAUTH(x) (((x) & FR_CMDMASK) == FR_AUTH) 897 #define FR_ISPREAUTH(x) (((x) & FR_CMDMASK) == FR_PREAUTH) 898 #define FR_ISACCOUNT(x) (((x) & FR_CMDMASK) == FR_ACCOUNT) 899 #define FR_ISSKIP(x) (((x) & FR_CMDMASK) == FR_SKIP) 900 #define FR_ISDECAPS(x) (((x) & FR_CMDMASK) == FR_DECAPSULATE) 901 #define FR_ISNOMATCH(x) ((x) & FR_NOMATCH) 902 #define FR_INOUT (FR_INQUE|FR_OUTQUE) 903 904 /* 905 * recognized flags for SIOCGETFF and SIOCSETFF, and get put in fr_flags 906 */ 907 #define FF_LOGPASS 0x10000000 908 #define FF_LOGBLOCK 0x20000000 909 #define FF_LOGNOMATCH 0x40000000 910 #define FF_LOGGING (FF_LOGPASS|FF_LOGBLOCK|FF_LOGNOMATCH) 911 #define FF_BLOCKNONIP 0x80000000 /* Solaris2 Only */ 912 913 914 /* 915 * Structure that passes information on what/how to flush to the kernel. 916 */ 917 typedef struct ipfflush { 918 int ipflu_how; 919 int ipflu_arg; 920 } ipfflush_t; 921 922 923 /* 924 * 925 */ 926 typedef struct ipfgetctl { 927 u_int ipfg_min; /* min value */ 928 u_int ipfg_current; /* current value */ 929 u_int ipfg_max; /* max value */ 930 u_int ipfg_default; /* default value */ 931 u_int ipfg_steps; /* value increments */ 932 char ipfg_name[40]; /* tag name for this control */ 933 } ipfgetctl_t; 934 935 typedef struct ipfsetctl { 936 int ipfs_which; /* 0 = min 1 = current 2 = max 3 = default */ 937 u_int ipfs_value; /* min value */ 938 char ipfs_name[40]; /* tag name for this control */ 939 } ipfsetctl_t; 940 941 942 /* 943 * Some of the statistics below are in their own counters, but most are kept 944 * in this single structure so that they can all easily be collected and 945 * copied back as required. 946 */ 947 typedef struct ipf_statistics { 948 u_long fr_icmp_coalesce; 949 u_long fr_tcp_frag; 950 u_long fr_tcp_pullup; 951 u_long fr_tcp_short; 952 u_long fr_tcp_small; 953 u_long fr_tcp_bad_flags; 954 u_long fr_udp_pullup; 955 u_long fr_ip_freed; 956 u_long fr_v6_ah_bad; 957 u_long fr_v6_bad; 958 u_long fr_v6_badfrag; 959 u_long fr_v6_dst_bad; 960 u_long fr_v6_esp_pullup; 961 u_long fr_v6_ext_short; 962 u_long fr_v6_ext_pullup; 963 u_long fr_v6_ext_hlen; 964 u_long fr_v6_frag_bad; 965 u_long fr_v6_frag_pullup; 966 u_long fr_v6_frag_size; 967 u_long fr_v6_gre_pullup; 968 u_long fr_v6_icmp6_pullup; 969 u_long fr_v6_rh_bad; 970 u_long fr_v6_badttl; /* TTL in packet doesn't reach minimum */ 971 u_long fr_v4_ah_bad; 972 u_long fr_v4_ah_pullup; 973 u_long fr_v4_esp_pullup; 974 u_long fr_v4_cipso_bad; 975 u_long fr_v4_cipso_tlen; 976 u_long fr_v4_gre_frag; 977 u_long fr_v4_gre_pullup; 978 u_long fr_v4_icmp_frag; 979 u_long fr_v4_icmp_pullup; 980 u_long fr_v4_badttl; /* TTL in packet doesn't reach minimum */ 981 u_long fr_v4_badsrc; /* source received doesn't match route */ 982 u_long fr_l4_badcksum; /* layer 4 header checksum failure */ 983 u_long fr_badcoalesces; 984 u_long fr_pass; /* packets allowed */ 985 u_long fr_block; /* packets denied */ 986 u_long fr_nom; /* packets which don't match any rule */ 987 u_long fr_short; /* packets which are short */ 988 u_long fr_ppkl; /* packets allowed and logged */ 989 u_long fr_bpkl; /* packets denied and logged */ 990 u_long fr_npkl; /* packets unmatched and logged */ 991 u_long fr_ret; /* packets for which a return is sent */ 992 u_long fr_acct; /* packets for which counting was performed */ 993 u_long fr_bnfr; /* bad attempts to allocate fragment state */ 994 u_long fr_nfr; /* new fragment state kept */ 995 u_long fr_cfr; /* add new fragment state but complete pkt */ 996 u_long fr_bads; /* bad attempts to allocate packet state */ 997 u_long fr_ads; /* new packet state kept */ 998 u_long fr_chit; /* cached hit */ 999 u_long fr_cmiss; /* cached miss */ 1000 u_long fr_tcpbad; /* TCP checksum check failures */ 1001 u_long fr_pull[2]; /* good and bad pullup attempts */ 1002 u_long fr_bad; /* bad IP packets to the filter */ 1003 u_long fr_ipv6; /* IPv6 packets in/out */ 1004 u_long fr_ppshit; /* dropped because of pps ceiling */ 1005 u_long fr_ipud; /* IP id update failures */ 1006 u_long fr_blocked[FRB_MAX_VALUE + 1]; 1007 } ipf_statistics_t; 1008 1009 /* 1010 * Log structure. Each packet header logged is prepended by one of these. 1011 * Following this in the log records read from the device will be an ipflog 1012 * structure which is then followed by any packet data. 1013 */ 1014 typedef struct iplog { 1015 u_32_t ipl_magic; 1016 u_int ipl_count; 1017 u_32_t ipl_seqnum; 1018 struct timeval ipl_time; 1019 size_t ipl_dsize; 1020 struct iplog *ipl_next; 1021 } iplog_t; 1022 1023 #define ipl_sec ipl_time.tv_sec 1024 #define ipl_usec ipl_time.tv_usec 1025 1026 #define IPL_MAGIC 0x49504c4d /* 'IPLM' */ 1027 #define IPL_MAGIC_NAT 0x49504c4e /* 'IPLN' */ 1028 #define IPL_MAGIC_STATE 0x49504c53 /* 'IPLS' */ 1029 #define IPLOG_SIZE sizeof(iplog_t) 1030 1031 typedef struct ipflog { 1032 #if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \ 1033 (defined(OpenBSD) && (OpenBSD >= 199603)) 1034 #else 1035 u_int fl_unit; 1036 #endif 1037 u_32_t fl_rule; 1038 u_32_t fl_flags; 1039 u_32_t fl_lflags; 1040 u_32_t fl_logtag; 1041 ipftag_t fl_nattag; 1042 u_short fl_plen; /* extra data after hlen */ 1043 u_short fl_loglevel; /* syslog log level */ 1044 char fl_group[FR_GROUPLEN]; 1045 u_char fl_hlen; /* length of IP headers saved */ 1046 u_char fl_dir; 1047 u_char fl_breason; /* from fin_reason */ 1048 u_char fl_family; /* address family of packet logged */ 1049 char fl_ifname[LIFNAMSIZ]; 1050 } ipflog_t; 1051 1052 #ifndef IPF_LOGGING 1053 # define IPF_LOGGING 0 1054 #endif 1055 #ifndef IPF_DEFAULT_PASS 1056 # define IPF_DEFAULT_PASS FR_PASS 1057 #endif 1058 1059 #define DEFAULT_IPFLOGSIZE 32768 1060 #ifndef IPFILTER_LOGSIZE 1061 # define IPFILTER_LOGSIZE DEFAULT_IPFLOGSIZE 1062 #else 1063 # if IPFILTER_LOGSIZE < 8192 1064 # error IPFILTER_LOGSIZE too small. Must be >= 8192 1065 # endif 1066 #endif 1067 1068 #define IPF_OPTCOPY 0x07ff00 /* bit mask of copied options */ 1069 1070 /* 1071 * Device filenames for reading log information. Use ipf on Solaris2 because 1072 * ipl is already a name used by something else. 1073 */ 1074 #ifndef IPL_NAME 1075 # if SOLARIS 1076 # define IPL_NAME "/dev/ipf" 1077 # else 1078 # define IPL_NAME "/dev/ipl" 1079 # endif 1080 #endif 1081 /* 1082 * Pathnames for various IP Filter control devices. Used by LKM 1083 * and userland, so defined here. 1084 */ 1085 #define IPNAT_NAME "/dev/ipnat" 1086 #define IPSTATE_NAME "/dev/ipstate" 1087 #define IPAUTH_NAME "/dev/ipauth" 1088 #define IPSYNC_NAME "/dev/ipsync" 1089 #define IPSCAN_NAME "/dev/ipscan" 1090 #define IPLOOKUP_NAME "/dev/iplookup" 1091 1092 #define IPL_LOGIPF 0 /* Minor device #'s for accessing logs */ 1093 #define IPL_LOGNAT 1 1094 #define IPL_LOGSTATE 2 1095 #define IPL_LOGAUTH 3 1096 #define IPL_LOGSYNC 4 1097 #define IPL_LOGSCAN 5 1098 #define IPL_LOGLOOKUP 6 1099 #define IPL_LOGCOUNT 7 1100 #define IPL_LOGMAX 7 1101 #define IPL_LOGSIZE IPL_LOGMAX + 1 1102 #define IPL_LOGALL -1 1103 #define IPL_LOGNONE -2 1104 1105 /* 1106 * For SIOCGETFS 1107 */ 1108 typedef struct friostat { 1109 ipf_statistics_t f_st[2]; 1110 frentry_t *f_ipf[2][2]; 1111 frentry_t *f_acct[2][2]; 1112 frentry_t *f_auth; 1113 struct frgroup *f_groups[IPL_LOGSIZE][2]; 1114 u_long f_froute[2]; 1115 u_long f_log_ok; 1116 u_long f_log_fail; 1117 u_long f_rb_no_mem; 1118 u_long f_rb_node_max; 1119 u_32_t f_ticks; 1120 int f_locks[IPL_LOGSIZE]; 1121 int f_defpass; /* default pass - from fr_pass */ 1122 int f_active; /* 1 or 0 - active rule set */ 1123 int f_running; /* 1 if running, else 0 */ 1124 int f_logging; /* 1 if enabled, else 0 */ 1125 int f_features; 1126 char f_version[32]; /* version string */ 1127 } friostat_t; 1128 1129 #define f_fin f_ipf[0] 1130 #define f_fout f_ipf[1] 1131 #define f_acctin f_acct[0] 1132 #define f_acctout f_acct[1] 1133 1134 #define IPF_FEAT_LKM 0x001 1135 #define IPF_FEAT_LOG 0x002 1136 #define IPF_FEAT_LOOKUP 0x004 1137 #define IPF_FEAT_BPF 0x008 1138 #define IPF_FEAT_COMPILED 0x010 1139 #define IPF_FEAT_CKSUM 0x020 1140 #define IPF_FEAT_SYNC 0x040 1141 #define IPF_FEAT_SCAN 0x080 1142 #define IPF_FEAT_IPV6 0x100 1143 1144 typedef struct optlist { 1145 u_short ol_val; 1146 int ol_bit; 1147 } optlist_t; 1148 1149 1150 /* 1151 * Group list structure. 1152 */ 1153 typedef struct frgroup { 1154 struct frgroup *fg_next; 1155 struct frentry *fg_head; 1156 struct frentry *fg_start; 1157 struct frgroup **fg_set; 1158 u_32_t fg_flags; 1159 int fg_ref; 1160 char fg_name[FR_GROUPLEN]; 1161 } frgroup_t; 1162 1163 #define FG_NAME(g) (*(g)->fg_name == '\0' ? "" : (g)->fg_name) 1164 1165 1166 /* 1167 * Used by state and NAT tables 1168 */ 1169 typedef struct icmpinfo { 1170 u_short ici_id; 1171 u_short ici_seq; 1172 u_char ici_type; 1173 } icmpinfo_t; 1174 1175 typedef struct udpinfo { 1176 u_short us_sport; 1177 u_short us_dport; 1178 } udpinfo_t; 1179 1180 1181 typedef struct tcpdata { 1182 u_32_t td_end; 1183 u_32_t td_maxend; 1184 u_32_t td_maxwin; 1185 u_32_t td_winscale; 1186 u_32_t td_maxseg; 1187 int td_winflags; 1188 } tcpdata_t; 1189 1190 #define TCP_WSCALE_MAX 14 1191 1192 #define TCP_WSCALE_SEEN 0x00000001 1193 #define TCP_WSCALE_FIRST 0x00000002 1194 #define TCP_SACK_PERMIT 0x00000004 1195 1196 1197 typedef struct tcpinfo { 1198 u_32_t ts_sport; 1199 u_32_t ts_dport; 1200 tcpdata_t ts_data[2]; 1201 } tcpinfo_t; 1202 1203 1204 /* 1205 * Structures to define a GRE header as seen in a packet. 1206 */ 1207 struct grebits { 1208 #if defined(sparc) 1209 u_32_t grb_ver:3; 1210 u_32_t grb_flags:3; 1211 u_32_t grb_A:1; 1212 u_32_t grb_recur:1; 1213 u_32_t grb_s:1; 1214 u_32_t grb_S:1; 1215 u_32_t grb_K:1; 1216 u_32_t grb_R:1; 1217 u_32_t grb_C:1; 1218 #else 1219 u_32_t grb_C:1; 1220 u_32_t grb_R:1; 1221 u_32_t grb_K:1; 1222 u_32_t grb_S:1; 1223 u_32_t grb_s:1; 1224 u_32_t grb_recur:1; 1225 u_32_t grb_A:1; 1226 u_32_t grb_flags:3; 1227 u_32_t grb_ver:3; 1228 #endif 1229 u_short grb_ptype; 1230 }; 1231 1232 typedef struct grehdr { 1233 union { 1234 struct grebits gru_bits; 1235 u_short gru_flags; 1236 } gr_un; 1237 u_short gr_len; 1238 u_short gr_call; 1239 } grehdr_t; 1240 1241 #define gr_flags gr_un.gru_flags 1242 #define gr_bits gr_un.gru_bits 1243 #define gr_ptype gr_bits.grb_ptype 1244 #define gr_C gr_bits.grb_C 1245 #define gr_R gr_bits.grb_R 1246 #define gr_K gr_bits.grb_K 1247 #define gr_S gr_bits.grb_S 1248 #define gr_s gr_bits.grb_s 1249 #define gr_recur gr_bits.grb_recur 1250 #define gr_A gr_bits.grb_A 1251 #define gr_ver gr_bits.grb_ver 1252 1253 /* 1254 * GRE information tracked by "keep state" 1255 */ 1256 typedef struct greinfo { 1257 u_short gs_call[2]; 1258 u_short gs_flags; 1259 u_short gs_ptype; 1260 } greinfo_t; 1261 1262 #define GRE_REV(x) ((ntohs(x) >> 13) & 7) 1263 1264 1265 /* 1266 * Format of an Authentication header 1267 */ 1268 typedef struct authhdr { 1269 u_char ah_next; 1270 u_char ah_plen; 1271 u_short ah_reserved; 1272 u_32_t ah_spi; 1273 u_32_t ah_seq; 1274 /* Following the sequence number field is 0 or more bytes of */ 1275 /* authentication data, as specified by ah_plen - RFC 2402. */ 1276 } authhdr_t; 1277 1278 1279 /* 1280 * Timeout tail queue list member 1281 */ 1282 typedef struct ipftqent { 1283 struct ipftqent **tqe_pnext; 1284 struct ipftqent *tqe_next; 1285 struct ipftq *tqe_ifq; 1286 void *tqe_parent; /* pointer back to NAT/state struct */ 1287 u_32_t tqe_die; /* when this entriy is to die */ 1288 u_32_t tqe_touched; 1289 int tqe_flags; 1290 int tqe_state[2]; /* current state of this entry */ 1291 } ipftqent_t; 1292 1293 #define TQE_RULEBASED 0x00000001 1294 #define TQE_DELETE 0x00000002 1295 1296 1297 /* 1298 * Timeout tail queue head for IPFilter 1299 */ 1300 typedef struct ipftq { 1301 ipfmutex_t ifq_lock; 1302 u_int ifq_ttl; 1303 ipftqent_t *ifq_head; 1304 ipftqent_t **ifq_tail; 1305 struct ipftq *ifq_next; 1306 struct ipftq **ifq_pnext; 1307 int ifq_ref; 1308 u_int ifq_flags; 1309 } ipftq_t; 1310 1311 #define IFQF_USER 0x01 /* User defined aging */ 1312 #define IFQF_DELETE 0x02 /* Marked for deletion */ 1313 #define IFQF_PROXY 0x04 /* Timeout queue in use by a proxy */ 1314 1315 #define IPFTQ_INIT(x,y,z) do { \ 1316 (x)->ifq_ttl = (y); \ 1317 (x)->ifq_head = NULL; \ 1318 (x)->ifq_ref = 1; \ 1319 (x)->ifq_tail = &(x)->ifq_head; \ 1320 MUTEX_INIT(&(x)->ifq_lock, (z)); \ 1321 } while (0) 1322 1323 #define IPF_HZ_MULT 1 1324 #define IPF_HZ_DIVIDE 2 /* How many times a second ipfilter */ 1325 /* checks its timeout queues. */ 1326 #define IPF_TTLVAL(x) (((x) / IPF_HZ_MULT) * IPF_HZ_DIVIDE) 1327 1328 typedef int (*ipftq_delete_fn_t)(struct ipf_main_softc_s *, void *); 1329 1330 1331 /* 1332 * Object structure description. For passing through in ioctls. 1333 */ 1334 typedef struct ipfobj { 1335 u_32_t ipfo_rev; /* IPFilter version number */ 1336 u_32_t ipfo_size; /* size of object at ipfo_ptr */ 1337 void *ipfo_ptr; /* pointer to object */ 1338 int ipfo_type; /* type of object being pointed to */ 1339 int ipfo_offset; /* bytes from ipfo_ptr where to start */ 1340 int ipfo_retval; /* return value */ 1341 u_char ipfo_xxxpad[28]; /* reserved for future use */ 1342 } ipfobj_t; 1343 1344 #define IPFOBJ_FRENTRY 0 /* struct frentry */ 1345 #define IPFOBJ_IPFSTAT 1 /* struct friostat */ 1346 #define IPFOBJ_IPFINFO 2 /* struct fr_info */ 1347 #define IPFOBJ_AUTHSTAT 3 /* struct fr_authstat */ 1348 #define IPFOBJ_FRAGSTAT 4 /* struct ipfrstat */ 1349 #define IPFOBJ_IPNAT 5 /* struct ipnat */ 1350 #define IPFOBJ_NATSTAT 6 /* struct natstat */ 1351 #define IPFOBJ_STATESAVE 7 /* struct ipstate_save */ 1352 #define IPFOBJ_NATSAVE 8 /* struct nat_save */ 1353 #define IPFOBJ_NATLOOKUP 9 /* struct natlookup */ 1354 #define IPFOBJ_IPSTATE 10 /* struct ipstate */ 1355 #define IPFOBJ_STATESTAT 11 /* struct ips_stat */ 1356 #define IPFOBJ_FRAUTH 12 /* struct frauth */ 1357 #define IPFOBJ_TUNEABLE 13 /* struct ipftune */ 1358 #define IPFOBJ_NAT 14 /* struct nat */ 1359 #define IPFOBJ_IPFITER 15 /* struct ipfruleiter */ 1360 #define IPFOBJ_GENITER 16 /* struct ipfgeniter */ 1361 #define IPFOBJ_GTABLE 17 /* struct ipftable */ 1362 #define IPFOBJ_LOOKUPITER 18 /* struct ipflookupiter */ 1363 #define IPFOBJ_STATETQTAB 19 /* struct ipftq * NSTATES */ 1364 #define IPFOBJ_IPFEXPR 20 1365 #define IPFOBJ_PROXYCTL 21 /* strct ap_ctl */ 1366 #define IPFOBJ_FRIPF 22 /* structfripf */ 1367 #define IPFOBJ_COUNT 23 /* How many #defines are above this? */ 1368 1369 1370 typedef union ipftunevalptr { 1371 void *ipftp_void; 1372 u_long *ipftp_long; 1373 u_int *ipftp_int; 1374 u_short *ipftp_short; 1375 u_char *ipftp_char; 1376 u_long ipftp_offset; 1377 } ipftunevalptr_t; 1378 1379 typedef union ipftuneval { 1380 u_long ipftu_long; 1381 u_int ipftu_int; 1382 u_short ipftu_short; 1383 u_char ipftu_char; 1384 } ipftuneval_t; 1385 1386 struct ipftuneable; 1387 typedef int (* ipftunefunc_t)(struct ipf_main_softc_s *, struct ipftuneable *, 1388 ipftuneval_t *); 1389 1390 typedef struct ipftuneable { 1391 ipftunevalptr_t ipft_una; 1392 const char *ipft_name; 1393 u_long ipft_min; 1394 u_long ipft_max; 1395 int ipft_sz; 1396 int ipft_flags; 1397 struct ipftuneable *ipft_next; 1398 ipftunefunc_t ipft_func; 1399 } ipftuneable_t; 1400 1401 #define ipft_addr ipft_una.ipftp_void 1402 #define ipft_plong ipft_una.ipftp_long 1403 #define ipft_pint ipft_una.ipftp_int 1404 #define ipft_pshort ipft_una.ipftp_short 1405 #define ipft_pchar ipft_una.ipftp_char 1406 1407 #define IPFT_RDONLY 1 /* read-only */ 1408 #define IPFT_WRDISABLED 2 /* write when disabled only */ 1409 1410 typedef struct ipftune { 1411 void *ipft_cookie; 1412 ipftuneval_t ipft_un; 1413 u_long ipft_min; 1414 u_long ipft_max; 1415 int ipft_sz; 1416 int ipft_flags; 1417 char ipft_name[80]; 1418 } ipftune_t; 1419 1420 #define ipft_vlong ipft_un.ipftu_long 1421 #define ipft_vint ipft_un.ipftu_int 1422 #define ipft_vshort ipft_un.ipftu_short 1423 #define ipft_vchar ipft_un.ipftu_char 1424 1425 /* 1426 * Hash table header 1427 */ 1428 #define IPFHASH(x,y) typedef struct { \ 1429 ipfrwlock_t ipfh_lock; \ 1430 struct x *ipfh_head; \ 1431 } y 1432 1433 /* 1434 ** HPUX Port 1435 */ 1436 #ifdef __hpux 1437 /* HP-UX locking sequence deadlock detection module lock MAJOR ID */ 1438 # define IPF_SMAJ 0 /* temp assignment XXX, not critical */ 1439 #endif 1440 1441 #if !defined(CDEV_MAJOR) && defined (__FreeBSD_version) && \ 1442 (__FreeBSD_version >= 220000) 1443 # define CDEV_MAJOR 79 1444 #endif 1445 1446 /* 1447 * Post NetBSD 1.2 has the PFIL interface for packet filters. This turns 1448 * on those hooks. We don't need any special mods in non-IP Filter code 1449 * with this! 1450 */ 1451 #if (defined(NetBSD) && (NetBSD > 199609) && (NetBSD <= 1991011)) || \ 1452 (defined(NetBSD1_2) && NetBSD1_2 > 1) || \ 1453 (defined(__FreeBSD__) && (__FreeBSD_version >= 500043)) 1454 # if (NetBSD >= 199905) 1455 # define PFIL_HOOKS 1456 # endif 1457 # ifdef PFIL_HOOKS 1458 # define NETBSD_PF 1459 # endif 1460 #endif 1461 1462 #ifdef _KERNEL 1463 # define FR_VERBOSE(verb_pr) 1464 # define FR_DEBUG(verb_pr) 1465 #else 1466 extern void ipfkdebug(char *, ...); 1467 extern void ipfkverbose(char *, ...); 1468 # define FR_VERBOSE(verb_pr) ipfkverbose verb_pr 1469 # define FR_DEBUG(verb_pr) ipfkdebug verb_pr 1470 #endif 1471 1472 /* 1473 * 1474 */ 1475 typedef struct ipfruleiter { 1476 int iri_inout; 1477 char iri_group[FR_GROUPLEN]; 1478 int iri_active; 1479 int iri_nrules; 1480 int iri_v; /* No longer used (compatibility) */ 1481 frentry_t *iri_rule; 1482 } ipfruleiter_t; 1483 1484 /* 1485 * Values for iri_inout 1486 */ 1487 #define F_IN 0 1488 #define F_OUT 1 1489 #define F_ACIN 2 1490 #define F_ACOUT 3 1491 1492 1493 typedef struct ipfgeniter { 1494 int igi_type; 1495 int igi_nitems; 1496 void *igi_data; 1497 } ipfgeniter_t; 1498 1499 #define IPFGENITER_IPF 0 1500 #define IPFGENITER_NAT 1 1501 #define IPFGENITER_IPNAT 2 1502 #define IPFGENITER_FRAG 3 1503 #define IPFGENITER_AUTH 4 1504 #define IPFGENITER_STATE 5 1505 #define IPFGENITER_NATFRAG 6 1506 #define IPFGENITER_HOSTMAP 7 1507 #define IPFGENITER_LOOKUP 8 1508 1509 typedef struct ipftable { 1510 int ita_type; 1511 void *ita_table; 1512 } ipftable_t; 1513 1514 #define IPFTABLE_BUCKETS 1 1515 #define IPFTABLE_BUCKETS_NATIN 2 1516 #define IPFTABLE_BUCKETS_NATOUT 3 1517 1518 1519 typedef struct ipf_v4_masktab_s { 1520 u_32_t imt4_active[33]; 1521 int imt4_masks[33]; 1522 int imt4_max; 1523 } ipf_v4_masktab_t; 1524 1525 typedef struct ipf_v6_masktab_s { 1526 i6addr_t imt6_active[129]; 1527 int imt6_masks[129]; 1528 int imt6_max; 1529 } ipf_v6_masktab_t; 1530 1531 1532 /* 1533 * 1534 */ 1535 typedef struct ipftoken { 1536 struct ipftoken *ipt_next; 1537 struct ipftoken **ipt_pnext; 1538 void *ipt_ctx; 1539 void *ipt_data; 1540 u_long ipt_die; 1541 int ipt_type; 1542 int ipt_uid; 1543 int ipt_subtype; 1544 int ipt_ref; 1545 int ipt_complete; 1546 } ipftoken_t; 1547 1548 1549 /* 1550 * 1551 */ 1552 typedef struct ipfexp { 1553 int ipfe_cmd; 1554 int ipfe_not; 1555 int ipfe_narg; 1556 int ipfe_size; 1557 int ipfe_arg0[1]; 1558 } ipfexp_t; 1559 1560 /* 1561 * Currently support commands (ipfe_cmd) 1562 * 32bits is split up follows: 1563 * aabbcccc 1564 * aa = 0 = packet matching, 1 = meta data matching 1565 * bb = IP protocol number 1566 * cccc = command 1567 */ 1568 #define IPF_EXP_IP_PR 0x00000001 1569 #define IPF_EXP_IP_ADDR 0x00000002 1570 #define IPF_EXP_IP_SRCADDR 0x00000003 1571 #define IPF_EXP_IP_DSTADDR 0x00000004 1572 #define IPF_EXP_IP6_ADDR 0x00000005 1573 #define IPF_EXP_IP6_SRCADDR 0x00000006 1574 #define IPF_EXP_IP6_DSTADDR 0x00000007 1575 #define IPF_EXP_TCP_FLAGS 0x00060001 1576 #define IPF_EXP_TCP_PORT 0x00060002 1577 #define IPF_EXP_TCP_SPORT 0x00060003 1578 #define IPF_EXP_TCP_DPORT 0x00060004 1579 #define IPF_EXP_UDP_PORT 0x00110002 1580 #define IPF_EXP_UDP_SPORT 0x00110003 1581 #define IPF_EXP_UDP_DPORT 0x00110004 1582 #define IPF_EXP_IDLE_GT 0x01000001 1583 #define IPF_EXP_TCP_STATE 0x01060002 1584 #define IPF_EXP_END 0xffffffff 1585 1586 #define ONE_DAY IPF_TTLVAL(1 * 86400) /* 1 day */ 1587 #define FIVE_DAYS (5 * ONE_DAY) 1588 1589 typedef struct ipf_main_softc_s { 1590 struct ipf_main_softc_s *ipf_next; 1591 ipfmutex_t ipf_rw; 1592 ipfmutex_t ipf_timeoutlock; 1593 ipfrwlock_t ipf_mutex; 1594 ipfrwlock_t ipf_frag; 1595 ipfrwlock_t ipf_global; 1596 ipfrwlock_t ipf_tokens; 1597 ipfrwlock_t ipf_state; 1598 ipfrwlock_t ipf_nat; 1599 ipfrwlock_t ipf_natfrag; 1600 ipfrwlock_t ipf_poolrw; 1601 int ipf_dynamic_softc; 1602 int ipf_refcnt; 1603 int ipf_running; 1604 int ipf_flags; 1605 int ipf_active; 1606 int ipf_control_forwarding; 1607 int ipf_update_ipid; 1608 int ipf_chksrc; /* causes a system crash if enabled */ 1609 int ipf_pass; 1610 int ipf_minttl; 1611 int ipf_icmpminfragmtu; 1612 int ipf_interror; /* Should be in a struct that is per */ 1613 /* thread or process. Does not belong */ 1614 /* here but there's a lot more work */ 1615 /* in doing that properly. For now, */ 1616 /* it is squatting. */ 1617 u_int ipf_tcpidletimeout; 1618 u_int ipf_tcpclosewait; 1619 u_int ipf_tcplastack; 1620 u_int ipf_tcptimewait; 1621 u_int ipf_tcptimeout; 1622 u_int ipf_tcpsynsent; 1623 u_int ipf_tcpsynrecv; 1624 u_int ipf_tcpclosed; 1625 u_int ipf_tcphalfclosed; 1626 u_int ipf_udptimeout; 1627 u_int ipf_udpacktimeout; 1628 u_int ipf_icmptimeout; 1629 u_int ipf_icmpacktimeout; 1630 u_int ipf_iptimeout; 1631 u_long ipf_ticks; 1632 u_long ipf_userifqs; 1633 u_long ipf_rb_no_mem; 1634 u_long ipf_rb_node_max; 1635 u_long ipf_frouteok[2]; 1636 ipftuneable_t *ipf_tuners; 1637 void *ipf_frag_soft; 1638 void *ipf_nat_soft; 1639 void *ipf_state_soft; 1640 void *ipf_auth_soft; 1641 void *ipf_proxy_soft; 1642 void *ipf_sync_soft; 1643 void *ipf_lookup_soft; 1644 void *ipf_log_soft; 1645 struct frgroup *ipf_groups[IPL_LOGSIZE][2]; 1646 frentry_t *ipf_rules[2][2]; 1647 frentry_t *ipf_acct[2][2]; 1648 frentry_t *ipf_rule_explist[2]; 1649 ipftoken_t *ipf_token_head; 1650 ipftoken_t **ipf_token_tail; 1651 #if defined(__FreeBSD_version) && (__FreeBSD_version >= 300000) && \ 1652 defined(_KERNEL) 1653 struct callout_handle ipf_slow_ch; 1654 #endif 1655 #if defined(linux) && defined(_KERNEL) 1656 struct timer_list ipf_timer; 1657 #endif 1658 #if NETBSD_GE_REV(104040000) 1659 struct callout ipf_slow_ch; 1660 #endif 1661 #if SOLARIS 1662 # if SOLARIS2 >= 7 1663 timeout_id_t ipf_slow_ch; 1664 # else 1665 int ipf_slow_ch; 1666 # endif 1667 #endif 1668 #if defined(_KERNEL) 1669 # if SOLARIS 1670 struct pollhead ipf_poll_head[IPL_LOGSIZE]; 1671 void *ipf_dip; 1672 # if defined(INSTANCES) 1673 int ipf_get_loopback; 1674 u_long ipf_idnum; 1675 net_handle_t ipf_nd_v4; 1676 net_handle_t ipf_nd_v6; 1677 hook_t *ipf_hk_v4_in; 1678 hook_t *ipf_hk_v4_out; 1679 hook_t *ipf_hk_v4_nic; 1680 hook_t *ipf_hk_v6_in; 1681 hook_t *ipf_hk_v6_out; 1682 hook_t *ipf_hk_v6_nic; 1683 hook_t *ipf_hk_loop_v4_in; 1684 hook_t *ipf_hk_loop_v4_out; 1685 hook_t *ipf_hk_loop_v6_in; 1686 hook_t *ipf_hk_loop_v6_out; 1687 # endif 1688 # else 1689 # if defined(linux) && defined(_KERNEL) 1690 struct poll_table_struct ipf_selwait[IPL_LOGSIZE]; 1691 wait_queue_head_t iplh_linux[IPL_LOGSIZE]; 1692 # else 1693 struct selinfo ipf_selwait[IPL_LOGSIZE]; 1694 # endif 1695 # endif 1696 #endif 1697 void *ipf_slow; 1698 ipf_statistics_t ipf_stats[2]; 1699 u_char ipf_iss_secret[32]; 1700 u_short ipf_ip_id; 1701 } ipf_main_softc_t; 1702 1703 #define IPFERROR(_e) do { softc->ipf_interror = (_e); \ 1704 DT1(user_error, int, _e); \ 1705 } while (0) 1706 1707 #ifndef _KERNEL 1708 extern int ipf_check(void *, struct ip *, int, void *, int, mb_t **); 1709 extern int (*ipf_checkp)(ip_t *, int, void *, int, mb_t **); 1710 extern struct ifnet *get_unit(char *, int); 1711 extern char *get_ifname(struct ifnet *); 1712 extern int ipfioctl(ipf_main_softc_t *, int, ioctlcmd_t, 1713 void *, int); 1714 extern void m_freem(mb_t *); 1715 extern size_t msgdsize(mb_t *); 1716 extern int bcopywrap(void *, void *, size_t); 1717 #else /* #ifndef _KERNEL */ 1718 # if defined(__NetBSD__) && defined(PFIL_HOOKS) 1719 extern void ipfilterattach(int); 1720 # endif 1721 extern int ipl_enable(void); 1722 extern int ipl_disable(void); 1723 # ifdef MENTAT 1724 extern int ipf_check(void *, struct ip *, int, void *, int, void *, 1725 mblk_t **); 1726 # if SOLARIS 1727 extern void ipf_prependmbt(fr_info_t *, mblk_t *); 1728 # if SOLARIS2 >= 7 1729 extern int ipfioctl(dev_t, int, intptr_t, int, cred_t *, int *); 1730 # else 1731 extern int ipfioctl(dev_t, int, int *, int, cred_t *, int *); 1732 # endif 1733 # endif 1734 # ifdef __hpux 1735 extern int ipfioctl(dev_t, int, caddr_t, int); 1736 extern int ipf_select(dev_t, int); 1737 # endif 1738 extern int ipf_qout(queue_t *, mblk_t *); 1739 # else /* MENTAT */ 1740 extern int ipf_check(void *, struct ip *, int, void *, int, mb_t **); 1741 extern int (*fr_checkp)(ip_t *, int, void *, int, mb_t **); 1742 extern size_t mbufchainlen(mb_t *); 1743 # ifdef __sgi 1744 # include <sys/cred.h> 1745 extern int ipfioctl(dev_t, int, caddr_t, int, cred_t *, int *); 1746 extern int ipfilter_sgi_attach(void); 1747 extern void ipfilter_sgi_detach(void); 1748 extern void ipfilter_sgi_intfsync(void); 1749 # else 1750 # ifdef IPFILTER_LKM 1751 extern int ipf_identify(char *); 1752 # endif 1753 # if BSDOS_GE_REV(199510) || FREEBSD_GE_REV(220000) || \ 1754 (defined(NetBSD) && (NetBSD >= 199511)) || defined(__OpenBSD__) 1755 # if defined(__NetBSD__) || BSDOS_GE_REV(199701) || \ 1756 defined(__OpenBSD__) || FREEBSD_GE_REV(300000) 1757 # if (__FreeBSD_version >= 500024) 1758 # if (__FreeBSD_version >= 502116) 1759 extern int ipfioctl(struct cdev*, u_long, caddr_t, int, struct thread *); 1760 # else 1761 extern int ipfioctl(dev_t, u_long, caddr_t, int, struct thread *); 1762 # endif /* __FreeBSD_version >= 502116 */ 1763 # else 1764 # if NETBSD_GE_REV(499001000) 1765 extern int ipfioctl(dev_t, u_long, void *, int, struct lwp *); 1766 # else 1767 # if NETBSD_GE_REV(399001400) 1768 extern int ipfioctl(dev_t, u_long, caddr_t, int, struct lwp *); 1769 # else 1770 extern int ipfioctl(dev_t, u_long, caddr_t, int, struct proc *); 1771 # endif 1772 # endif 1773 # endif /* __FreeBSD_version >= 500024 */ 1774 # else 1775 extern int ipfioctl(dev_t, int, caddr_t, int, struct proc *); 1776 # endif 1777 # else 1778 # ifdef linux 1779 extern int ipfioctl(struct inode *, struct file *, u_int, u_long); 1780 # else 1781 extern int ipfioctl(dev_t, int, caddr_t, int); 1782 # endif 1783 # endif /* (_BSDI_VERSION >= 199510) */ 1784 # endif /* __ sgi */ 1785 # endif /* MENTAT */ 1786 1787 # if defined(__FreeBSD_version) 1788 extern int ipf_pfil_hook(void); 1789 extern int ipf_pfil_unhook(void); 1790 extern void ipf_event_reg(void); 1791 extern void ipf_event_dereg(void); 1792 # endif 1793 1794 # if defined(INSTANCES) 1795 extern ipf_main_softc_t *ipf_find_softc(u_long); 1796 extern int ipf_set_loopback(ipf_main_softc_t *, ipftuneable_t *, 1797 ipftuneval_t *); 1798 # endif 1799 1800 #endif /* #ifndef _KERNEL */ 1801 1802 extern char *memstr(const char *, char *, size_t, size_t); 1803 extern int count4bits(u_32_t); 1804 #ifdef USE_INET6 1805 extern int count6bits(u_32_t *); 1806 #endif 1807 extern int frrequest(ipf_main_softc_t *, int, ioctlcmd_t, void *, 1808 int, int); 1809 extern char *getifname(struct ifnet *); 1810 extern int ipfattach(ipf_main_softc_t *); 1811 extern int ipfdetach(ipf_main_softc_t *); 1812 extern u_short ipf_cksum(u_short *, int); 1813 extern int copyinptr(ipf_main_softc_t *, void *, void *, size_t); 1814 extern int copyoutptr(ipf_main_softc_t *, void *, void *, size_t); 1815 extern int ipf_fastroute(mb_t *, mb_t **, fr_info_t *, frdest_t *); 1816 extern int ipf_inject(fr_info_t *, mb_t *); 1817 extern int ipf_inobj(ipf_main_softc_t *, void *, ipfobj_t *, 1818 void *, int); 1819 extern int ipf_inobjsz(ipf_main_softc_t *, void *, void *, 1820 int , int); 1821 extern int ipf_ioctlswitch(ipf_main_softc_t *, int, void *, 1822 ioctlcmd_t, int, int, void *); 1823 extern int ipf_ipf_ioctl(ipf_main_softc_t *, void *, ioctlcmd_t, 1824 int, int, void *); 1825 extern int ipf_ipftune(ipf_main_softc_t *, ioctlcmd_t, void *); 1826 extern int ipf_matcharray_load(ipf_main_softc_t *, void *, 1827 ipfobj_t *, int **); 1828 extern int ipf_matcharray_verify(int *, int); 1829 extern int ipf_outobj(ipf_main_softc_t *, void *, void *, int); 1830 extern int ipf_outobjk(ipf_main_softc_t *, ipfobj_t *, void *); 1831 extern int ipf_outobjsz(ipf_main_softc_t *, void *, void *, 1832 int, int); 1833 extern void *ipf_pullup(mb_t *, fr_info_t *, int); 1834 extern int ipf_resolvedest(ipf_main_softc_t *, char *, 1835 struct frdest *, int); 1836 extern int ipf_resolvefunc(ipf_main_softc_t *, void *); 1837 extern void *ipf_resolvenic(ipf_main_softc_t *, char *, int); 1838 extern int ipf_send_icmp_err(int, fr_info_t *, int); 1839 extern int ipf_send_reset(fr_info_t *); 1840 #if (defined(__FreeBSD_version) && (__FreeBSD_version < 501000)) || \ 1841 !defined(_KERNEL) || defined(linux) 1842 extern int ppsratecheck(struct timeval *, int *, int); 1843 #endif 1844 extern void ipf_apply_timeout(ipftq_t *, u_int); 1845 extern ipftq_t *ipf_addtimeoutqueue(ipf_main_softc_t *, ipftq_t **, 1846 u_int); 1847 extern void ipf_deletequeueentry(ipftqent_t *); 1848 extern int ipf_deletetimeoutqueue(ipftq_t *); 1849 extern void ipf_freetimeoutqueue(ipf_main_softc_t *, ipftq_t *); 1850 extern void ipf_movequeue(u_long, ipftqent_t *, ipftq_t *, 1851 ipftq_t *); 1852 extern void ipf_queueappend(u_long, ipftqent_t *, ipftq_t *, void *); 1853 extern void ipf_queueback(u_long, ipftqent_t *); 1854 extern int ipf_queueflush(ipf_main_softc_t *, ipftq_delete_fn_t, 1855 ipftq_t *, ipftq_t *, u_int *, int, int); 1856 extern void ipf_queuefront(ipftqent_t *); 1857 extern int ipf_settimeout_tcp(ipftuneable_t *, ipftuneval_t *, 1858 ipftq_t *); 1859 extern int ipf_checkv4sum(fr_info_t *); 1860 extern int ipf_checkl4sum(fr_info_t *); 1861 extern int ipf_ifpfillv4addr(int, struct sockaddr_in *, 1862 struct sockaddr_in *, struct in_addr *, 1863 struct in_addr *); 1864 extern int ipf_coalesce(fr_info_t *); 1865 #ifdef USE_INET6 1866 extern int ipf_checkv6sum(fr_info_t *); 1867 extern int ipf_ifpfillv6addr(int, struct sockaddr_in6 *, 1868 struct sockaddr_in6 *, i6addr_t *, 1869 i6addr_t *); 1870 #endif 1871 1872 extern int ipf_tune_add(ipf_main_softc_t *, ipftuneable_t *); 1873 extern int ipf_tune_add_array(ipf_main_softc_t *, ipftuneable_t *); 1874 extern int ipf_tune_del(ipf_main_softc_t *, ipftuneable_t *); 1875 extern int ipf_tune_del_array(ipf_main_softc_t *, ipftuneable_t *); 1876 extern int ipf_tune_array_link(ipf_main_softc_t *, ipftuneable_t *); 1877 extern int ipf_tune_array_unlink(ipf_main_softc_t *, 1878 ipftuneable_t *); 1879 extern ipftuneable_t *ipf_tune_array_copy(void *, size_t, 1880 ipftuneable_t *); 1881 1882 extern int ipf_pr_pullup(fr_info_t *, int); 1883 1884 extern int ipf_flush(ipf_main_softc_t *, minor_t, int); 1885 extern frgroup_t *ipf_group_add(ipf_main_softc_t *, char *, void *, 1886 u_32_t, minor_t, int); 1887 extern void ipf_group_del(ipf_main_softc_t *, frgroup_t *, frentry_t *); 1888 extern int ipf_derefrule(ipf_main_softc_t *, frentry_t **); 1889 extern frgroup_t *ipf_findgroup(ipf_main_softc_t *, char *, minor_t, 1890 int, frgroup_t ***); 1891 1892 extern int ipf_log_init(void); 1893 extern int ipf_log_bytesused(ipf_main_softc_t *, int); 1894 extern int ipf_log_canread(ipf_main_softc_t *, int); 1895 extern int ipf_log_clear(ipf_main_softc_t *, minor_t); 1896 extern u_long ipf_log_failures(ipf_main_softc_t *, int); 1897 extern int ipf_log_read(ipf_main_softc_t *, minor_t, uio_t *); 1898 extern int ipf_log_items(ipf_main_softc_t *, int, fr_info_t *, 1899 void **, size_t *, int *, int); 1900 extern u_long ipf_log_logok(ipf_main_softc_t *, int); 1901 extern void ipf_log_unload(ipf_main_softc_t *); 1902 extern int ipf_log_pkt(fr_info_t *, u_int); 1903 extern int ipf_log_pkt(fr_info_t *, u_int); 1904 1905 extern frentry_t *ipf_acctpkt(fr_info_t *, u_32_t *); 1906 extern u_short fr_cksum(fr_info_t *, ip_t *, int, void *); 1907 extern void ipf_deinitialise(ipf_main_softc_t *); 1908 extern int ipf_deliverlocal(ipf_main_softc_t *, int, void *, 1909 i6addr_t *); 1910 extern frentry_t *ipf_dstgrpmap(fr_info_t *, u_32_t *); 1911 extern void ipf_fixskip(frentry_t **, frentry_t *, int); 1912 extern void ipf_forgetifp(ipf_main_softc_t *, void *); 1913 extern frentry_t *ipf_getrulen(ipf_main_softc_t *, int, char *, 1914 u_32_t); 1915 extern int ipf_ifpaddr(ipf_main_softc_t *, int, int, void *, 1916 i6addr_t *, i6addr_t *); 1917 extern int ipf_initialise(void); 1918 extern int ipf_lock(void *, int *); 1919 extern int ipf_makefrip(int, ip_t *, fr_info_t *); 1920 extern void ipf_inet_mask_add(int, ipf_v4_masktab_t *); 1921 extern void ipf_inet_mask_del(int, ipf_v4_masktab_t *); 1922 #ifdef USE_INET6 1923 extern void ipf_inet6_mask_add(int, i6addr_t *, ipf_v6_masktab_t *); 1924 extern void ipf_inet6_mask_del(int, i6addr_t *, ipf_v6_masktab_t *); 1925 #endif 1926 extern int ipf_matchtag(ipftag_t *, ipftag_t *); 1927 extern int ipf_matchicmpqueryreply(int, icmpinfo_t *, 1928 struct icmp *, int); 1929 extern u_32_t ipf_newisn(fr_info_t *); 1930 extern u_short ipf_nextipid(fr_info_t *); 1931 extern u_int ipf_pcksum(fr_info_t *, int, u_int); 1932 extern void ipf_rule_expire(ipf_main_softc_t *); 1933 extern int ipf_scanlist(fr_info_t *, u_32_t); 1934 extern frentry_t *ipf_srcgrpmap(fr_info_t *, u_32_t *); 1935 extern int ipf_tcpudpchk(fr_ip_t *, frtuc_t *); 1936 extern int ipf_verifysrc(fr_info_t *fin); 1937 extern int ipf_zerostats(ipf_main_softc_t *, void *); 1938 extern int ipf_getnextrule(ipf_main_softc_t *, ipftoken_t *, 1939 void *); 1940 extern int ipf_sync(ipf_main_softc_t *, void *); 1941 extern int ipf_token_deref(ipf_main_softc_t *, ipftoken_t *); 1942 extern void ipf_token_expire(ipf_main_softc_t *); 1943 extern ipftoken_t *ipf_token_find(ipf_main_softc_t *, int, int, 1944 void *); 1945 extern void ipf_token_free(ipf_main_softc_t *, ipftoken_t *); 1946 extern int ipf_token_del(ipf_main_softc_t *, int, int, 1947 void *); 1948 extern void ipf_token_mark_complete(ipftoken_t *); 1949 extern int ipf_genericiter(ipf_main_softc_t *, void *, 1950 int, void *); 1951 #ifdef IPFILTER_LOOKUP 1952 extern void *ipf_resolvelookup(int, u_int, u_int, 1953 lookupfunc_t *); 1954 #endif 1955 extern u_32_t ipf_random(void); 1956 1957 extern int ipf_main_load(void); 1958 extern void *ipf_main_soft_create(void *); 1959 extern void ipf_main_soft_destroy(ipf_main_softc_t *); 1960 extern int ipf_main_soft_init(ipf_main_softc_t *); 1961 extern int ipf_main_soft_fini(ipf_main_softc_t *); 1962 extern int ipf_main_unload(void); 1963 extern int ipf_load_all(void); 1964 extern int ipf_unload_all(void); 1965 extern void ipf_destroy_all(ipf_main_softc_t *); 1966 extern ipf_main_softc_t *ipf_create_all(void *); 1967 extern int ipf_init_all(ipf_main_softc_t *); 1968 extern int ipf_fini_all(ipf_main_softc_t *); 1969 extern void ipf_log_soft_destroy(ipf_main_softc_t *, void *); 1970 extern void *ipf_log_soft_create(ipf_main_softc_t *); 1971 extern int ipf_log_soft_init(ipf_main_softc_t *, void *); 1972 extern int ipf_log_soft_fini(ipf_main_softc_t *, void *); 1973 extern int ipf_log_main_load(void); 1974 extern int ipf_log_main_unload(void); 1975 1976 1977 extern char ipfilter_version[]; 1978 #ifdef USE_INET6 1979 extern int icmptoicmp6types[ICMP_MAXTYPE+1]; 1980 extern int icmptoicmp6unreach[ICMP_MAX_UNREACH]; 1981 extern int icmpreplytype6[ICMP6_MAXTYPE + 1]; 1982 #endif 1983 #ifdef IPFILTER_COMPAT 1984 extern int ipf_in_compat(ipf_main_softc_t *, ipfobj_t *, void *,int); 1985 extern int ipf_out_compat(ipf_main_softc_t *, ipfobj_t *, void *); 1986 #endif 1987 extern int icmpreplytype4[ICMP_MAXTYPE + 1]; 1988 1989 extern int ipf_ht_node_add(ipf_main_softc_t *, host_track_t *, 1990 int, i6addr_t *); 1991 extern int ipf_ht_node_del(host_track_t *, int, i6addr_t *); 1992 extern void ipf_rb_ht_flush(host_track_t *); 1993 extern void ipf_rb_ht_freenode(host_node_t *, void *); 1994 extern void ipf_rb_ht_init(host_track_t *); 1995 1996 #endif /* _NETINET_IP_FIL_H_ */ 1997
Indexes created Tue Sep 30 07:10:03 GMT 2025