1 /* $NetBSD: ip_fil.h,v 1.5 2013/06/29 21:06:57 rmind 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 # if (defined(sun) && (defined(__svr4__) || defined(__SVR4))) 34 # define SOLARIS 1 35 # else 36 # define SOLARIS 0 37 # endif 38 #endif 39 40 #if defined(__STDC__) || defined(__GNUC__) || defined(_AIX51) 41 # define SIOCADAFR _IOW('r', 60, struct ipfobj) 42 # define SIOCRMAFR _IOW('r', 61, struct ipfobj) 43 # define SIOCSETFF _IOW('r', 62, u_int) 44 # define SIOCGETFF _IOR('r', 63, u_int) 45 # define SIOCGETFS _IOWR('r', 64, struct ipfobj) 46 # define SIOCIPFFL _IOWR('r', 65, int) 47 # define SIOCIPFFB _IOR('r', 66, int) 48 # define SIOCADIFR _IOW('r', 67, struct ipfobj) 49 # define SIOCRMIFR _IOW('r', 68, struct ipfobj) 50 # define SIOCSWAPA _IOR('r', 69, u_int) 51 # define SIOCINAFR _IOW('r', 70, struct ipfobj) 52 # define SIOCINIFR _IOW('r', 71, struct ipfobj) 53 # define SIOCFRENB _IOW('r', 72, u_int) 54 # define SIOCFRSYN _IOW('r', 73, u_int) 55 # define SIOCFRZST _IOWR('r', 74, struct ipfobj) 56 # define SIOCZRLST _IOWR('r', 75, struct ipfobj) 57 # define SIOCAUTHW _IOWR('r', 76, struct ipfobj) 58 # define SIOCAUTHR _IOWR('r', 77, struct ipfobj) 59 # define SIOCSTAT1 _IOWR('r', 78, struct ipfobj) 60 # define SIOCSTLCK _IOWR('r', 79, u_int) 61 # define SIOCSTPUT _IOWR('r', 80, struct ipfobj) 62 # define SIOCSTGET _IOWR('r', 81, struct ipfobj) 63 # define SIOCSTGSZ _IOWR('r', 82, struct ipfobj) 64 # define SIOCSTAT2 _IOWR('r', 83, struct ipfobj) 65 # define SIOCSETLG _IOWR('r', 84, int) 66 # define SIOCGETLG _IOWR('r', 85, int) 67 # define SIOCFUNCL _IOWR('r', 86, struct ipfunc_resolve) 68 # define SIOCIPFGETNEXT _IOWR('r', 87, struct ipfobj) 69 # define SIOCIPFGET _IOWR('r', 88, struct ipfobj) 70 # define SIOCIPFSET _IOWR('r', 89, struct ipfobj) 71 # define SIOCIPFL6 _IOWR('r', 90, int) 72 # define SIOCIPFITER _IOWR('r', 91, struct ipfobj) 73 # define SIOCGENITER _IOWR('r', 92, struct ipfobj) 74 # define SIOCGTABL _IOWR('r', 93, struct ipfobj) 75 # define SIOCIPFDELTOK _IOWR('r', 94, int) 76 # define SIOCLOOKUPITER _IOWR('r', 95, struct ipfobj) 77 # define SIOCGTQTAB _IOWR('r', 96, struct ipfobj) 78 # define SIOCMATCHFLUSH _IOWR('r', 97, struct ipfobj) 79 # define SIOCIPFINTERROR _IOR('r', 98, int) 80 #else 81 # define SIOCADAFR _IOW(r, 60, struct ipfobj) 82 # define SIOCRMAFR _IOW(r, 61, struct ipfobj) 83 # define SIOCSETFF _IOW(r, 62, u_int) 84 # define SIOCGETFF _IOR(r, 63, u_int) 85 # define SIOCGETFS _IOWR(r, 64, struct ipfobj) 86 # define SIOCIPFFL _IOWR(r, 65, int) 87 # define SIOCIPFFB _IOR(r, 66, int) 88 # define SIOCADIFR _IOW(r, 67, struct ipfobj) 89 # define SIOCRMIFR _IOW(r, 68, struct ipfobj) 90 # define SIOCSWAPA _IOR(r, 69, u_int) 91 # define SIOCINAFR _IOW(r, 70, struct ipfobj) 92 # define SIOCINIFR _IOW(r, 71, struct ipfobj) 93 # define SIOCFRENB _IOW(r, 72, u_int) 94 # define SIOCFRSYN _IOW(r, 73, u_int) 95 # define SIOCFRZST _IOWR(r, 74, struct ipfobj) 96 # define SIOCZRLST _IOWR(r, 75, struct ipfobj) 97 # define SIOCAUTHW _IOWR(r, 76, struct ipfobj) 98 # define SIOCAUTHR _IOWR(r, 77, struct ipfobj) 99 # define SIOCSTAT1 _IOWR(r, 78, struct ipfobj) 100 # define SIOCSTLCK _IOWR(r, 79, u_int) 101 # define SIOCSTPUT _IOWR(r, 80, struct ipfobj) 102 # define SIOCSTGET _IOWR(r, 81, struct ipfobj) 103 # define SIOCSTGSZ _IOWR(r, 82, struct ipfobj) 104 # define SIOCSTAT2 _IOWR(r, 83, struct ipfobj) 105 # define SIOCSETLG _IOWR(r, 84, int) 106 # define SIOCGETLG _IOWR(r, 85, int) 107 # define SIOCFUNCL _IOWR(r, 86, struct ipfunc_resolve) 108 # define SIOCIPFGETNEXT _IOWR(r, 87, struct ipfobj) 109 # define SIOCIPFGET _IOWR(r, 88, struct ipfobj) 110 # define SIOCIPFSET _IOWR(r, 89, struct ipfobj) 111 # define SIOCIPFL6 _IOWR(r, 90, int) 112 # define SIOCIPFITER _IOWR(r, 91, struct ipfobj) 113 # define SIOCGENITER _IOWR(r, 92, struct ipfobj) 114 # define SIOCGTABL _IOWR(r, 93, struct ipfobj) 115 # define SIOCIPFDELTOK _IOWR(r, 94, int) 116 # define SIOCLOOKUPITER _IOWR(r, 95, struct ipfobj) 117 # define SIOCGTQTAB _IOWR(r, 96, struct ipfobj) 118 # define SIOCMATCHFLUSH _IOWR(r, 97, struct ipfobj) 119 # define SIOCIPFINTERROR _IOR(r, 98, int) 120 #endif 121 #define SIOCADDFR SIOCADAFR 122 #define SIOCDELFR SIOCRMAFR 123 #define SIOCINSFR SIOCINAFR 124 #define SIOCATHST SIOCSTAT1 125 #define SIOCGFRST SIOCSTAT2 126 127 128 struct ipscan; 129 struct ifnet; 130 struct ipf_main_softc_s; 131 132 typedef int (* lookupfunc_t)(struct ipf_main_softc_s *, void *, 133 int, void *, u_int); 134 135 /* 136 * i6addr is used as a container for both IPv4 and IPv6 addresses, as well 137 * as other types of objects, depending on its qualifier. 138 */ 139 #ifdef USE_INET6 140 typedef union i6addr { 141 u_32_t i6[4]; 142 struct in_addr in4; 143 struct in6_addr in6; 144 void *vptr[2]; 145 lookupfunc_t lptr[2]; 146 struct { 147 u_short type; 148 u_short subtype; 149 int name; 150 } i6un; 151 } i6addr_t; 152 #else 153 typedef union i6addr { 154 u_32_t i6[4]; 155 struct in_addr in4; 156 void *vptr[2]; 157 lookupfunc_t lptr[2]; 158 struct { 159 u_short type; 160 u_short subtype; 161 int name; 162 } i6un; 163 } i6addr_t; 164 #endif 165 166 #define in4_addr in4.s_addr 167 #define iplookupnum i6[1] 168 #define iplookupname i6un.name 169 #define iplookuptype i6un.type 170 #define iplookupsubtype i6un.subtype 171 /* 172 * NOTE: These DO overlap the above on 64bit systems and this IS recognised. 173 */ 174 #define iplookupptr vptr[0] 175 #define iplookupfunc lptr[1] 176 177 /* Avoid casting to a type presuming 64-bit alignment. */ 178 #define I60(x) (((u_32_t *)(x))[0]) 179 #define I61(x) (((u_32_t *)(x))[1]) 180 #define I62(x) (((u_32_t *)(x))[2]) 181 #define I63(x) (((u_32_t *)(x))[3]) 182 #define HI60(x) ntohl(((u_32_t *)(x))[0]) 183 #define HI61(x) ntohl(((u_32_t *)(x))[1]) 184 #define HI62(x) ntohl(((u_32_t *)(x))[2]) 185 #define HI63(x) ntohl(((u_32_t *)(x))[3]) 186 187 #define IP6_EQ(a,b) ((I63(a) == I63(b)) && (I62(a) == I62(b)) && \ 188 (I61(a) == I61(b)) && (I60(a) == I60(b))) 189 #define IP6_NEQ(a,b) ((I63(a) != I63(b)) || (I62(a) != I62(b)) || \ 190 (I61(a) != I61(b)) || (I60(a) != I60(b))) 191 #define IP6_ISZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) == 0) 192 #define IP6_NOTZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) != 0) 193 #define IP6_ISONES(a) ((I63(a) == 0xffffffff) && (I62(a) == 0xffffffff) && \ 194 (I61(a) == 0xffffffff) && (I60(a) == 0xffffffff)) 195 #define IP6_GT(a,b) (ntohl(HI60(a)) > ntohl(HI60(b)) || \ 196 (HI60(a) == HI60(b) && \ 197 (ntohl(HI61(a)) > ntohl(HI61(b)) || \ 198 (HI61(a) == HI61(b) && \ 199 (ntohl(HI62(a)) > ntohl(HI62(b)) || \ 200 (HI62(a) == HI62(b) && \ 201 ntohl(HI63(a)) > ntohl(HI63(b)))))))) 202 #define IP6_LT(a,b) (ntohl(HI60(a)) < ntohl(HI60(b)) || \ 203 (HI60(a) == HI60(b) && \ 204 (ntohl(HI61(a)) < ntohl(HI61(b)) || \ 205 (HI61(a) == HI61(b) && \ 206 (ntohl(HI62(a)) < ntohl(HI62(b)) || \ 207 (HI62(a) == HI62(b) && \ 208 ntohl(HI63(a)) < ntohl(HI63(b)))))))) 209 #define NLADD(n,x) htonl(ntohl(n) + (x)) 210 #define IP6_INC(a) \ 211 do { u_32_t *_i6 = (u_32_t *)(a); \ 212 _i6[3] = NLADD(_i6[3], 1); \ 213 if (_i6[3] == 0) { \ 214 _i6[2] = NLADD(_i6[2], 1); \ 215 if (_i6[2] == 0) { \ 216 _i6[1] = NLADD(_i6[1], 1); \ 217 if (_i6[1] == 0) { \ 218 _i6[0] = NLADD(_i6[0], 1); \ 219 } \ 220 } \ 221 } \ 222 } while (0) 223 #define IP6_ADD(a,x,d) \ 224 do { i6addr_t *_s = (i6addr_t *)(a); \ 225 i6addr_t *_d = (i6addr_t *)(d); \ 226 _d->i6[0] = NLADD(_s->i6[0], x); \ 227 if (ntohl(_d->i6[0]) < ntohl(_s->i6[0])) { \ 228 _d->i6[1] = NLADD(_d->i6[1], 1); \ 229 if (ntohl(_d->i6[1]) < ntohl(_s->i6[1])) { \ 230 _d->i6[2] = NLADD(_d->i6[2], 1); \ 231 if (ntohl(_d->i6[2]) < ntohl(_s->i6[2])) { \ 232 _d->i6[3] = NLADD(_d->i6[3], 1); \ 233 } \ 234 } \ 235 } \ 236 } while (0) 237 #define IP6_AND(a,b,d) do { i6addr_t *_s1 = (i6addr_t *)(a); \ 238 i6addr_t *_s2 = (i6addr_t *)(b); \ 239 i6addr_t *_d = (i6addr_t *)(d); \ 240 _d->i6[0] = _s1->i6[0] & _s2->i6[0]; \ 241 _d->i6[1] = _s1->i6[1] & _s2->i6[1]; \ 242 _d->i6[2] = _s1->i6[2] & _s2->i6[2]; \ 243 _d->i6[3] = _s1->i6[3] & _s2->i6[3]; \ 244 } while (0) 245 #define IP6_ANDASSIGN(a,m) \ 246 do { i6addr_t *_d = (i6addr_t *)(a); \ 247 i6addr_t *_m = (i6addr_t *)(m); \ 248 _d->i6[0] &= _m->i6[0]; \ 249 _d->i6[1] &= _m->i6[1]; \ 250 _d->i6[2] &= _m->i6[2]; \ 251 _d->i6[3] &= _m->i6[3]; \ 252 } while (0) 253 #define IP6_MASKEQ(a,m,b) \ 254 (((I60(a) & I60(m)) == I60(b)) && \ 255 ((I61(a) & I61(m)) == I61(b)) && \ 256 ((I62(a) & I62(m)) == I62(b)) && \ 257 ((I63(a) & I63(m)) == I63(b))) 258 #define IP6_MASKNEQ(a,m,b) \ 259 (((I60(a) & I60(m)) != I60(b)) || \ 260 ((I61(a) & I61(m)) != I61(b)) || \ 261 ((I62(a) & I62(m)) != I62(b)) || \ 262 ((I63(a) & I63(m)) != I63(b))) 263 #define IP6_MERGE(a,b,c) \ 264 do { i6addr_t *_d, *_s1, *_s2; \ 265 _d = (i6addr_t *)(a); \ 266 _s1 = (i6addr_t *)(b); \ 267 _s2 = (i6addr_t *)(c); \ 268 _d->i6[0] |= _s1->i6[0] & ~_s2->i6[0]; \ 269 _d->i6[1] |= _s1->i6[1] & ~_s2->i6[1]; \ 270 _d->i6[2] |= _s1->i6[2] & ~_s2->i6[2]; \ 271 _d->i6[3] |= _s1->i6[3] & ~_s2->i6[3]; \ 272 } while (0) 273 #define IP6_MASK(a,b,c) \ 274 do { i6addr_t *_d, *_s1, *_s2; \ 275 _d = (i6addr_t *)(a); \ 276 _s1 = (i6addr_t *)(b); \ 277 _s2 = (i6addr_t *)(c); \ 278 _d->i6[0] = _s1->i6[0] & ~_s2->i6[0]; \ 279 _d->i6[1] = _s1->i6[1] & ~_s2->i6[1]; \ 280 _d->i6[2] = _s1->i6[2] & ~_s2->i6[2]; \ 281 _d->i6[3] = _s1->i6[3] & ~_s2->i6[3]; \ 282 } while (0) 283 #define IP6_SETONES(a) \ 284 do { i6addr_t *_d = (i6addr_t *)(a); \ 285 _d->i6[0] = 0xffffffff; \ 286 _d->i6[1] = 0xffffffff; \ 287 _d->i6[2] = 0xffffffff; \ 288 _d->i6[3] = 0xffffffff; \ 289 } while (0) 290 291 typedef union ipso_u { 292 u_short ipso_ripso[2]; 293 u_32_t ipso_doi; 294 } ipso_t; 295 296 typedef struct fr_ip { 297 u_32_t fi_v:4; /* IP version */ 298 u_32_t fi_xx:4; /* spare */ 299 u_32_t fi_tos:8; /* IP packet TOS */ 300 u_32_t fi_ttl:8; /* IP packet TTL */ 301 u_32_t fi_p:8; /* IP packet protocol */ 302 u_32_t fi_optmsk; /* bitmask composed from IP options */ 303 i6addr_t fi_src; /* source address from packet */ 304 i6addr_t fi_dst; /* destination address from packet */ 305 ipso_t fi_ipso; /* IP security options */ 306 u_32_t fi_flx; /* packet flags */ 307 u_32_t fi_tcpmsk; /* TCP options set/reset */ 308 u_32_t fi_ports[2]; /* TCP ports */ 309 u_char fi_tcpf; /* TCP flags */ 310 u_char fi_sensitivity; 311 u_char fi_xxx[2]; /* pad */ 312 } fr_ip_t; 313 314 /* 315 * For use in fi_flx 316 */ 317 #define FI_TCPUDP 0x0001 /* TCP/UCP implied comparison*/ 318 #define FI_OPTIONS 0x0002 319 #define FI_FRAG 0x0004 320 #define FI_SHORT 0x0008 321 #define FI_NATED 0x0010 322 #define FI_MULTICAST 0x0020 323 #define FI_BROADCAST 0x0040 324 #define FI_MBCAST 0x0080 325 #define FI_STATE 0x0100 326 #define FI_BADNAT 0x0200 327 #define FI_BAD 0x0400 328 #define FI_OOW 0x0800 /* Out of state window, else match */ 329 #define FI_ICMPERR 0x1000 330 #define FI_FRAGBODY 0x2000 331 #define FI_BADSRC 0x4000 332 #define FI_LOWTTL 0x8000 333 #define FI_CMP 0x5cfe3 /* Not FI_FRAG,FI_NATED,FI_FRAGTAIL */ 334 #define FI_ICMPCMP 0x0003 /* Flags we can check for ICMP error packets */ 335 #define FI_WITH 0x5effe /* Not FI_TCPUDP */ 336 #define FI_V6EXTHDR 0x10000 337 #define FI_COALESCE 0x20000 338 #define FI_NEWNAT 0x40000 339 #define FI_ICMPQUERY 0x80000 340 #define FI_ENCAP 0x100000 /* encap/decap with NAT */ 341 #define FI_AH 0x200000 /* AH header present */ 342 #define FI_DOCKSUM 0x10000000 /* Proxy wants L4 recalculation */ 343 #define FI_NOCKSUM 0x20000000 /* don't do a L4 checksum validation */ 344 #define FI_NOWILD 0x40000000 /* Do not do wildcard searches */ 345 #define FI_IGNORE 0x80000000 346 347 #define fi_secmsk fi_ipso.ipso_ripso[0] 348 #define fi_auth fi_ipso.ipso_ripso[1] 349 #define fi_doi fi_ipso.ipso_doi 350 #define fi_saddr fi_src.in4.s_addr 351 #define fi_daddr fi_dst.in4.s_addr 352 #define fi_srcnum fi_src.iplookupnum 353 #define fi_dstnum fi_dst.iplookupnum 354 #define fi_srcname fi_src.iplookupname 355 #define fi_dstname fi_dst.iplookupname 356 #define fi_srctype fi_src.iplookuptype 357 #define fi_dsttype fi_dst.iplookuptype 358 #define fi_srcsubtype fi_src.iplookupsubtype 359 #define fi_dstsubtype fi_dst.iplookupsubtype 360 #define fi_srcptr fi_src.iplookupptr 361 #define fi_dstptr fi_dst.iplookupptr 362 #define fi_srcfunc fi_src.iplookupfunc 363 #define fi_dstfunc fi_dst.iplookupfunc 364 365 366 /* 367 * These are both used by the state and NAT code to indicate that one port or 368 * the other should be treated as a wildcard. 369 * NOTE: When updating, check bit masks in ip_state.h and update there too. 370 */ 371 #define SI_W_SPORT 0x00000100 372 #define SI_W_DPORT 0x00000200 373 #define SI_WILDP (SI_W_SPORT|SI_W_DPORT) 374 #define SI_W_SADDR 0x00000400 375 #define SI_W_DADDR 0x00000800 376 #define SI_WILDA (SI_W_SADDR|SI_W_DADDR) 377 #define SI_NEWFR 0x00001000 378 #define SI_CLONE 0x00002000 379 #define SI_CLONED 0x00004000 380 #define SI_NEWCLONE 0x00008000 381 382 typedef struct { 383 u_short fda_ports[2]; 384 u_char fda_tcpf; /* TCP header flags (SYN, ACK, etc) */ 385 } frdat_t; 386 387 typedef enum fr_breasons_e { 388 FRB_BLOCKED = 0, 389 FRB_LOGFAIL = 1, 390 FRB_PPSRATE = 2, 391 FRB_JUMBO = 3, 392 FRB_MAKEFRIP = 4, 393 FRB_STATEADD = 5, 394 FRB_UPDATEIPID = 6, 395 FRB_LOGFAIL2 = 7, 396 FRB_DECAPFRIP = 8, 397 FRB_AUTHNEW = 9, 398 FRB_AUTHCAPTURE = 10, 399 FRB_COALESCE = 11, 400 FRB_PULLUP = 12, 401 FRB_AUTHFEEDBACK = 13, 402 FRB_BADFRAG = 14, 403 FRB_NATV4 = 15, 404 FRB_NATV6 = 16, 405 } fr_breason_t; 406 407 #define FRB_MAX_VALUE 16 408 409 typedef enum ipf_cksum_e { 410 FI_CK_BAD = -1, 411 FI_CK_NEEDED = 0, 412 FI_CK_SUMOK = 1, 413 FI_CK_L4PART = 2, 414 FI_CK_L4FULL = 4 415 } ipf_cksum_t; 416 417 typedef struct fr_info { 418 void *fin_main_soft; 419 void *fin_ifp; /* interface packet is `on' */ 420 struct frentry *fin_fr; /* last matching rule */ 421 int fin_out; /* in or out ? 1 == out, 0 == in */ 422 fr_ip_t fin_fi; /* IP Packet summary */ 423 frdat_t fin_dat; /* TCP/UDP ports, ICMP code/type */ 424 int fin_dlen; /* length of data portion of packet */ 425 int fin_plen; 426 u_32_t fin_rule; /* rule # last matched */ 427 u_short fin_hlen; /* length of IP header in bytes */ 428 char fin_group[FR_GROUPLEN]; /* group number, -1 for none */ 429 void *fin_dp; /* start of data past IP header */ 430 /* 431 * Fields after fin_dp aren't used for compression of log records. 432 * fin_fi contains the IP version (fin_family) 433 * fin_rule isn't included because adding a new rule can change it but 434 * not change fin_fr. fin_rule is the rule number reported. 435 * It isn't necessary to include fin_crc because that is checked 436 * for explicitly, before calling bcmp. 437 */ 438 u_32_t fin_crc; /* Simple calculation for logging */ 439 int fin_family; /* AF_INET, etc. */ 440 int fin_icode; /* ICMP error to return */ 441 int fin_mtu; /* MTU input for ICMP need-frag */ 442 int fin_rev; /* state only: 1 = reverse */ 443 int fin_ipoff; /* # bytes from buffer start to hdr */ 444 u_32_t fin_id; /* IP packet id field */ 445 u_short fin_l4hlen; /* length of L4 header, if known */ 446 u_short fin_off; 447 int fin_depth; /* Group nesting depth */ 448 int fin_error; /* Error code to return */ 449 ipf_cksum_t fin_cksum; /* -1 = bad, 1 = good, 0 = not done */ 450 fr_breason_t fin_reason; /* why auto blocked */ 451 u_int fin_pktnum; 452 void *fin_nattag; 453 struct frdest *fin_dif; 454 struct frdest *fin_tif; 455 union { 456 ip_t *fip_ip; 457 #ifdef USE_INET6 458 ip6_t *fip_ip6; 459 #endif 460 } fin_ipu; 461 mb_t **fin_mp; /* pointer to pointer to mbuf */ 462 mb_t *fin_m; /* pointer to mbuf */ 463 #ifdef MENTAT 464 mb_t *fin_qfm; /* pointer to mblk where pkt starts */ 465 void *fin_qpi; 466 char fin_ifname[LIFNAMSIZ]; 467 #endif 468 #ifdef __sgi 469 void *fin_hbuf; 470 #endif 471 void *fin_fraghdr; /* pointer to start of ipv6 frag hdr */ 472 } fr_info_t; 473 474 #define fin_ip fin_ipu.fip_ip 475 #define fin_ip6 fin_ipu.fip_ip6 476 #define fin_v fin_fi.fi_v 477 #define fin_p fin_fi.fi_p 478 #define fin_flx fin_fi.fi_flx 479 #define fin_optmsk fin_fi.fi_optmsk 480 #define fin_secmsk fin_fi.fi_secmsk 481 #define fin_doi fin_fi.fi_doi 482 #define fin_auth fin_fi.fi_auth 483 #define fin_src fin_fi.fi_src.in4 484 #define fin_saddr fin_fi.fi_saddr 485 #define fin_dst fin_fi.fi_dst.in4 486 #define fin_daddr fin_fi.fi_daddr 487 #define fin_data fin_fi.fi_ports 488 #define fin_sport fin_fi.fi_ports[0] 489 #define fin_dport fin_fi.fi_ports[1] 490 #define fin_tcpf fin_fi.fi_tcpf 491 #define fin_src6 fin_fi.fi_src 492 #define fin_dst6 fin_fi.fi_dst 493 #define fin_srcip6 fin_fi.fi_src.in6 494 #define fin_dstip6 fin_fi.fi_dst.in6 495 496 #define IPF_IN 0 497 #define IPF_OUT 1 498 499 typedef struct frentry *(*ipfunc_t)(fr_info_t *, u_32_t *); 500 typedef int (*ipfuncinit_t)(struct ipf_main_softc_s *, 501 struct frentry *); 502 503 typedef struct ipfunc_resolve { 504 char ipfu_name[32]; 505 ipfunc_t ipfu_addr; 506 ipfuncinit_t ipfu_init; 507 ipfuncinit_t ipfu_fini; 508 } ipfunc_resolve_t; 509 510 /* 511 * Size for compares on fr_info structures 512 */ 513 #define FI_CSIZE offsetof(fr_info_t, fin_icode) 514 #define FI_LCSIZE offsetof(fr_info_t, fin_dp) 515 516 /* 517 * Size for copying cache fr_info structure 518 */ 519 #define FI_COPYSIZE offsetof(fr_info_t, fin_dp) 520 521 /* 522 * Structure for holding IPFilter's tag information 523 */ 524 #define IPFTAG_LEN 16 525 typedef struct { 526 union { 527 u_32_t iptu_num[4]; 528 char iptu_tag[IPFTAG_LEN]; 529 } ipt_un; 530 int ipt_not; 531 } ipftag_t; 532 533 #define ipt_tag ipt_un.iptu_tag 534 #define ipt_num ipt_un.iptu_num 535 536 /* 537 * Structure to define address for pool lookups. 538 */ 539 typedef struct { 540 u_char adf_len; 541 sa_family_t adf_family; 542 u_char adf_xxx[2]; 543 i6addr_t adf_addr; 544 } addrfamily_t; 545 546 547 RBI_LINK(ipf_rb, host_node_s); 548 549 typedef struct host_node_s { 550 RBI_FIELD(ipf_rb) hn_entry; 551 addrfamily_t hn_addr; 552 int hn_active; 553 } host_node_t; 554 555 typedef RBI_HEAD(ipf_rb, host_node_s) ipf_rb_head_t; 556 557 typedef struct host_track_s { 558 ipf_rb_head_t ht_root; 559 int ht_max_nodes; 560 int ht_max_per_node; 561 int ht_netmask; 562 int ht_cur_nodes; 563 } host_track_t; 564 565 566 typedef enum fr_dtypes_e { 567 FRD_NORMAL = 0, 568 FRD_DSTLIST 569 } fr_dtypes_t; 570 /* 571 * This structure is used to hold information about the next hop for where 572 * to forward a packet. 573 */ 574 typedef struct frdest { 575 void *fd_ptr; 576 addrfamily_t fd_addr; 577 fr_dtypes_t fd_type; 578 int fd_name; 579 int fd_local; 580 } frdest_t; 581 582 #define fd_ip6 fd_addr.adf_addr 583 #define fd_ip fd_ip6.in4 584 585 586 typedef enum fr_ctypes_e { 587 FR_NONE = 0, 588 FR_EQUAL, 589 FR_NEQUAL, 590 FR_LESST, 591 FR_GREATERT, 592 FR_LESSTE, 593 FR_GREATERTE, 594 FR_OUTRANGE, 595 FR_INRANGE, 596 FR_INCRANGE 597 } fr_ctypes_t; 598 599 /* 600 * This structure holds information about a port comparison. 601 */ 602 typedef struct frpcmp { 603 fr_ctypes_t frp_cmp; /* data for port comparisons */ 604 u_32_t frp_port; /* top port for <> and >< */ 605 u_32_t frp_top; /* top port for <> and >< */ 606 } frpcmp_t; 607 608 609 /* 610 * Structure containing all the relevant TCP things that can be checked in 611 * a filter rule. 612 */ 613 typedef struct frtuc { 614 u_char ftu_tcpfm; /* tcp flags mask */ 615 u_char ftu_tcpf; /* tcp flags */ 616 frpcmp_t ftu_src; 617 frpcmp_t ftu_dst; 618 } frtuc_t; 619 620 #define ftu_scmp ftu_src.frp_cmp 621 #define ftu_dcmp ftu_dst.frp_cmp 622 #define ftu_sport ftu_src.frp_port 623 #define ftu_dport ftu_dst.frp_port 624 #define ftu_stop ftu_src.frp_top 625 #define ftu_dtop ftu_dst.frp_top 626 627 #define FR_TCPFMAX 0x3f 628 629 typedef enum fr_atypes_e { 630 FRI_NONE = -1, /* For LHS of NAT */ 631 FRI_NORMAL = 0, /* Normal address */ 632 FRI_DYNAMIC, /* dynamic address */ 633 FRI_LOOKUP, /* address is a pool # */ 634 FRI_RANGE, /* address/mask is a range */ 635 FRI_NETWORK, /* network address from if */ 636 FRI_BROADCAST, /* broadcast address from if */ 637 FRI_PEERADDR, /* Peer address for P-to-P */ 638 FRI_NETMASKED, /* network address with netmask from if */ 639 FRI_SPLIT, /* For NAT compatibility */ 640 FRI_INTERFACE /* address is based on interface name */ 641 } fr_atypes_t; 642 643 /* 644 * This structure makes up what is considered to be the IPFilter specific 645 * matching components of a filter rule, as opposed to the data structures 646 * used to define the result which are in frentry_t and not here. 647 */ 648 typedef struct fripf { 649 fr_ip_t fri_ip; 650 fr_ip_t fri_mip; /* mask structure */ 651 652 u_short fri_icmpm; /* data for ICMP packets (mask) */ 653 u_short fri_icmp; 654 655 frtuc_t fri_tuc; 656 fr_atypes_t fri_satype; /* addres type */ 657 fr_atypes_t fri_datype; /* addres type */ 658 int fri_sifpidx; /* doing dynamic addressing */ 659 int fri_difpidx; /* index into fr_ifps[] to use when */ 660 } fripf_t; 661 662 #define fri_dlookup fri_mip.fi_dst 663 #define fri_slookup fri_mip.fi_src 664 #define fri_dstnum fri_mip.fi_dstnum 665 #define fri_srcnum fri_mip.fi_srcnum 666 #define fri_dstname fri_mip.fi_dstname 667 #define fri_srcname fri_mip.fi_srcname 668 #define fri_dstptr fri_mip.fi_dstptr 669 #define fri_srcptr fri_mip.fi_srcptr 670 671 672 typedef enum fr_rtypes_e { 673 FR_T_NONE = 0, 674 FR_T_IPF, /* IPF structures */ 675 FR_T_BPFOPC, /* BPF opcode */ 676 FR_T_CALLFUNC, /* callout to function in fr_func only */ 677 FR_T_COMPIPF, /* compiled C code */ 678 FR_T_IPFEXPR, /* IPF expression */ 679 FR_T_BUILTIN = 0x40000000, /* rule is in kernel space */ 680 FR_T_IPF_BUILTIN, 681 FR_T_BPFOPC_BUILTIN, 682 FR_T_CALLFUNC_BUILTIN, 683 FR_T_COMPIPF_BUILTIN, 684 FR_T_IPFEXPR_BUILTIN 685 } fr_rtypes_t; 686 687 typedef struct frentry * (* frentfunc_t)(fr_info_t *); 688 689 typedef struct frentry { 690 ipfmutex_t fr_lock; 691 struct frentry *fr_next; 692 struct frentry **fr_pnext; 693 struct frgroup *fr_grp; 694 struct frgroup *fr_grphead; 695 struct frgroup *fr_icmpgrp; 696 struct ipscan *fr_isc; 697 struct frentry *fr_dnext; /* 2 fr_die linked list pointers */ 698 struct frentry **fr_pdnext; 699 void *fr_ifas[4]; 700 void *fr_ptr; /* for use with fr_arg */ 701 int fr_comment; /* text comment for rule */ 702 int fr_size; /* size of this structure */ 703 int fr_ref; /* reference count */ 704 int fr_statecnt; /* state count - for limit rules */ 705 u_32_t fr_die; /* only used on loading the rule */ 706 u_int fr_cksum; /* checksum on filter rules for performance */ 707 /* 708 * The line number from a file is here because we need to be able to 709 * match the rule generated with ``grep rule ipf.conf | ipf -rf -'' 710 * with the rule loaded using ``ipf -f ipf.conf'' - thus it can't be 711 * on the other side of fr_func. 712 */ 713 int fr_flineno; /* line number from conf file */ 714 /* 715 * These are only incremented when a packet matches this rule and 716 * it is the last match 717 */ 718 U_QUAD_T fr_hits; 719 U_QUAD_T fr_bytes; 720 721 /* 722 * For PPS rate limiting 723 * fr_lpu is used to always have the same size for this field, 724 * allocating 64bits for seconds and 32bits for milliseconds. 725 */ 726 union { 727 struct timeval frp_lastpkt; 728 char frp_bytes[12]; 729 } fr_lpu; 730 int fr_curpps; 731 732 union { 733 void *fru_data; 734 char *fru_caddr; 735 fripf_t *fru_ipf; 736 frentfunc_t fru_func; 737 } fr_dun; 738 739 /* 740 * Fields after this may not change whilst in the kernel. 741 */ 742 ipfunc_t fr_func; /* call this function */ 743 int fr_dsize; 744 int fr_pps; 745 fr_rtypes_t fr_type; 746 u_32_t fr_flags; /* per-rule flags && options (see below) */ 747 u_32_t fr_logtag; /* user defined log tag # */ 748 u_32_t fr_collect; /* collection number */ 749 u_int fr_arg; /* misc. numeric arg for rule */ 750 u_int fr_loglevel; /* syslog log facility + priority */ 751 u_char fr_family; 752 u_char fr_icode; /* return ICMP code */ 753 int fr_group; /* group to which this rule belongs */ 754 int fr_grhead; /* group # which this rule starts */ 755 int fr_ifnames[4]; 756 int fr_isctag; 757 int fr_rpc; /* XID Filtering */ 758 ipftag_t fr_nattag; 759 frdest_t fr_tifs[2]; /* "to"/"reply-to" interface */ 760 frdest_t fr_dif; /* duplicate packet interface */ 761 /* 762 * These are all options related to stateful filtering 763 */ 764 host_track_t fr_srctrack; 765 int fr_nostatelog; 766 int fr_statemax; /* max reference count */ 767 int fr_icmphead; /* ICMP group for state options */ 768 u_int fr_age[2]; /* non-TCP state timeouts */ 769 /* 770 * How big is the name buffer at the end? 771 */ 772 int fr_namelen; 773 char fr_names[1]; 774 } frentry_t; 775 776 #define fr_lastpkt fr_lpu.frp_lastpkt 777 #define fr_caddr fr_dun.fru_caddr 778 #define fr_data fr_dun.fru_data 779 #define fr_dfunc fr_dun.fru_func 780 #define fr_ipf fr_dun.fru_ipf 781 #define fr_ip fr_ipf->fri_ip 782 #define fr_mip fr_ipf->fri_mip 783 #define fr_icmpm fr_ipf->fri_icmpm 784 #define fr_icmp fr_ipf->fri_icmp 785 #define fr_tuc fr_ipf->fri_tuc 786 #define fr_satype fr_ipf->fri_satype 787 #define fr_datype fr_ipf->fri_datype 788 #define fr_sifpidx fr_ipf->fri_sifpidx 789 #define fr_difpidx fr_ipf->fri_difpidx 790 #define fr_proto fr_ip.fi_p 791 #define fr_mproto fr_mip.fi_p 792 #define fr_ttl fr_ip.fi_ttl 793 #define fr_mttl fr_mip.fi_ttl 794 #define fr_tos fr_ip.fi_tos 795 #define fr_mtos fr_mip.fi_tos 796 #define fr_tcpfm fr_tuc.ftu_tcpfm 797 #define fr_tcpf fr_tuc.ftu_tcpf 798 #define fr_scmp fr_tuc.ftu_scmp 799 #define fr_dcmp fr_tuc.ftu_dcmp 800 #define fr_dport fr_tuc.ftu_dport 801 #define fr_sport fr_tuc.ftu_sport 802 #define fr_stop fr_tuc.ftu_stop 803 #define fr_dtop fr_tuc.ftu_dtop 804 #define fr_dst fr_ip.fi_dst.in4 805 #define fr_dst6 fr_ip.fi_dst 806 #define fr_daddr fr_ip.fi_dst.in4.s_addr 807 #define fr_src fr_ip.fi_src.in4 808 #define fr_src6 fr_ip.fi_src 809 #define fr_saddr fr_ip.fi_src.in4.s_addr 810 #define fr_dmsk fr_mip.fi_dst.in4 811 #define fr_dmsk6 fr_mip.fi_dst 812 #define fr_dmask fr_mip.fi_dst.in4.s_addr 813 #define fr_smsk fr_mip.fi_src.in4 814 #define fr_smsk6 fr_mip.fi_src 815 #define fr_smask fr_mip.fi_src.in4.s_addr 816 #define fr_dstnum fr_ip.fi_dstnum 817 #define fr_srcnum fr_ip.fi_srcnum 818 #define fr_dlookup fr_ip.fi_dst 819 #define fr_slookup fr_ip.fi_src 820 #define fr_dstname fr_ip.fi_dstname 821 #define fr_srcname fr_ip.fi_srcname 822 #define fr_dsttype fr_ip.fi_dsttype 823 #define fr_srctype fr_ip.fi_srctype 824 #define fr_dstsubtype fr_ip.fi_dstsubtype 825 #define fr_srcsubtype fr_ip.fi_srcsubtype 826 #define fr_dstptr fr_mip.fi_dstptr 827 #define fr_srcptr fr_mip.fi_srcptr 828 #define fr_dstfunc fr_mip.fi_dstfunc 829 #define fr_srcfunc fr_mip.fi_srcfunc 830 #define fr_optbits fr_ip.fi_optmsk 831 #define fr_optmask fr_mip.fi_optmsk 832 #define fr_secbits fr_ip.fi_secmsk 833 #define fr_secmask fr_mip.fi_secmsk 834 #define fr_authbits fr_ip.fi_auth 835 #define fr_authmask fr_mip.fi_auth 836 #define fr_doi fr_ip.fi_doi 837 #define fr_doimask fr_mip.fi_doi 838 #define fr_flx fr_ip.fi_flx 839 #define fr_mflx fr_mip.fi_flx 840 #define fr_ifa fr_ifas[0] 841 #define fr_oifa fr_ifas[2] 842 #define fr_tif fr_tifs[0] 843 #define fr_rif fr_tifs[1] 844 845 #define FR_NOLOGTAG 0 846 847 #define FR_CMPSIZ (sizeof(struct frentry) - \ 848 offsetof(struct frentry, fr_func)) 849 #define FR_NAME(_f, _n) (_f)->fr_names + (_f)->_n 850 851 852 /* 853 * fr_flags 854 */ 855 #define FR_BLOCK 0x00001 /* do not allow packet to pass */ 856 #define FR_PASS 0x00002 /* allow packet to pass */ 857 #define FR_AUTH 0x00003 /* use authentication */ 858 #define FR_PREAUTH 0x00004 /* require preauthentication */ 859 #define FR_ACCOUNT 0x00005 /* Accounting rule */ 860 #define FR_SKIP 0x00006 /* skip rule */ 861 #define FR_DECAPSULATE 0x00008 /* decapsulate rule */ 862 #define FR_CALL 0x00009 /* call rule */ 863 #define FR_CMDMASK 0x0000f 864 #define FR_LOG 0x00010 /* Log */ 865 #define FR_LOGB 0x00011 /* Log-fail */ 866 #define FR_LOGP 0x00012 /* Log-pass */ 867 #define FR_LOGMASK (FR_LOG|FR_CMDMASK) 868 #define FR_CALLNOW 0x00020 /* call another function (fr_func) if matches */ 869 #define FR_NOTSRCIP 0x00040 870 #define FR_NOTDSTIP 0x00080 871 #define FR_QUICK 0x00100 /* match & stop processing list */ 872 #define FR_KEEPFRAG 0x00200 /* keep fragment information */ 873 #define FR_KEEPSTATE 0x00400 /* keep `connection' state information */ 874 #define FR_FASTROUTE 0x00800 /* bypass normal routing */ 875 #define FR_RETRST 0x01000 /* Return TCP RST packet - reset connection */ 876 #define FR_RETICMP 0x02000 /* Return ICMP unreachable packet */ 877 #define FR_FAKEICMP 0x03000 /* Return ICMP unreachable with fake source */ 878 #define FR_OUTQUE 0x04000 /* outgoing packets */ 879 #define FR_INQUE 0x08000 /* ingoing packets */ 880 #define FR_LOGBODY 0x10000 /* Log the body */ 881 #define FR_LOGFIRST 0x20000 /* Log the first byte if state held */ 882 #define FR_LOGORBLOCK 0x40000 /* block the packet if it can't be logged */ 883 #define FR_STLOOSE 0x80000 /* loose state checking */ 884 #define FR_FRSTRICT 0x100000 /* strict frag. cache */ 885 #define FR_STSTRICT 0x200000 /* strict keep state */ 886 #define FR_NEWISN 0x400000 /* new ISN for outgoing TCP */ 887 #define FR_NOICMPERR 0x800000 /* do not match ICMP errors in state */ 888 #define FR_STATESYNC 0x1000000 /* synchronize state to slave */ 889 #define FR_COPIED 0x2000000 /* copied from user space */ 890 #define FR_INACTIVE 0x4000000 /* only used when flush'ing rules */ 891 #define FR_NOMATCH 0x8000000 /* no match occured */ 892 /* 0x10000000 FF_LOGPASS */ 893 /* 0x20000000 FF_LOGBLOCK */ 894 /* 0x40000000 FF_LOGNOMATCH */ 895 /* 0x80000000 FF_BLOCKNONIP */ 896 897 #define FR_RETMASK (FR_RETICMP|FR_RETRST|FR_FAKEICMP) 898 #define FR_ISBLOCK(x) (((x) & FR_CMDMASK) == FR_BLOCK) 899 #define FR_ISPASS(x) (((x) & FR_CMDMASK) == FR_PASS) 900 #define FR_ISAUTH(x) (((x) & FR_CMDMASK) == FR_AUTH) 901 #define FR_ISPREAUTH(x) (((x) & FR_CMDMASK) == FR_PREAUTH) 902 #define FR_ISACCOUNT(x) (((x) & FR_CMDMASK) == FR_ACCOUNT) 903 #define FR_ISSKIP(x) (((x) & FR_CMDMASK) == FR_SKIP) 904 #define FR_ISDECAPS(x) (((x) & FR_CMDMASK) == FR_DECAPSULATE) 905 #define FR_ISNOMATCH(x) ((x) & FR_NOMATCH) 906 #define FR_INOUT (FR_INQUE|FR_OUTQUE) 907 908 /* 909 * recognized flags for SIOCGETFF and SIOCSETFF, and get put in fr_flags 910 */ 911 #define FF_LOGPASS 0x10000000 912 #define FF_LOGBLOCK 0x20000000 913 #define FF_LOGNOMATCH 0x40000000 914 #define FF_LOGGING (FF_LOGPASS|FF_LOGBLOCK|FF_LOGNOMATCH) 915 #define FF_BLOCKNONIP 0x80000000 /* Solaris2 Only */ 916 917 918 /* 919 * Structure that passes information on what/how to flush to the kernel. 920 */ 921 typedef struct ipfflush { 922 int ipflu_how; 923 int ipflu_arg; 924 } ipfflush_t; 925 926 927 /* 928 * 929 */ 930 typedef struct ipfgetctl { 931 u_int ipfg_min; /* min value */ 932 u_int ipfg_current; /* current value */ 933 u_int ipfg_max; /* max value */ 934 u_int ipfg_default; /* default value */ 935 u_int ipfg_steps; /* value increments */ 936 char ipfg_name[40]; /* tag name for this control */ 937 } ipfgetctl_t; 938 939 typedef struct ipfsetctl { 940 int ipfs_which; /* 0 = min 1 = current 2 = max 3 = default */ 941 u_int ipfs_value; /* min value */ 942 char ipfs_name[40]; /* tag name for this control */ 943 } ipfsetctl_t; 944 945 946 /* 947 * Some of the statistics below are in their own counters, but most are kept 948 * in this single structure so that they can all easily be collected and 949 * copied back as required. 950 */ 951 typedef struct ipf_statistics { 952 u_long fr_icmp_coalesce; 953 u_long fr_tcp_frag; 954 u_long fr_tcp_pullup; 955 u_long fr_tcp_short; 956 u_long fr_tcp_small; 957 u_long fr_tcp_bad_flags; 958 u_long fr_udp_pullup; 959 u_long fr_ip_freed; 960 u_long fr_v6_ah_bad; 961 u_long fr_v6_bad; 962 u_long fr_v6_badfrag; 963 u_long fr_v6_dst_bad; 964 u_long fr_v6_esp_pullup; 965 u_long fr_v6_ext_short; 966 u_long fr_v6_ext_pullup; 967 u_long fr_v6_ext_hlen; 968 u_long fr_v6_frag_bad; 969 u_long fr_v6_frag_pullup; 970 u_long fr_v6_frag_size; 971 u_long fr_v6_gre_pullup; 972 u_long fr_v6_icmp6_pullup; 973 u_long fr_v6_rh_bad; 974 u_long fr_v6_badttl; /* TTL in packet doesn't reach minimum */ 975 u_long fr_v4_ah_bad; 976 u_long fr_v4_ah_pullup; 977 u_long fr_v4_esp_pullup; 978 u_long fr_v4_cipso_bad; 979 u_long fr_v4_cipso_tlen; 980 u_long fr_v4_gre_frag; 981 u_long fr_v4_gre_pullup; 982 u_long fr_v4_icmp_frag; 983 u_long fr_v4_icmp_pullup; 984 u_long fr_v4_badttl; /* TTL in packet doesn't reach minimum */ 985 u_long fr_v4_badsrc; /* source received doesn't match route */ 986 u_long fr_l4_badcksum; /* layer 4 header checksum failure */ 987 u_long fr_badcoalesces; 988 u_long fr_pass; /* packets allowed */ 989 u_long fr_block; /* packets denied */ 990 u_long fr_nom; /* packets which don't match any rule */ 991 u_long fr_short; /* packets which are short */ 992 u_long fr_ppkl; /* packets allowed and logged */ 993 u_long fr_bpkl; /* packets denied and logged */ 994 u_long fr_npkl; /* packets unmatched and logged */ 995 u_long fr_ret; /* packets for which a return is sent */ 996 u_long fr_acct; /* packets for which counting was performed */ 997 u_long fr_bnfr; /* bad attempts to allocate fragment state */ 998 u_long fr_nfr; /* new fragment state kept */ 999 u_long fr_cfr; /* add new fragment state but complete pkt */ 1000 u_long fr_bads; /* bad attempts to allocate packet state */ 1001 u_long fr_ads; /* new packet state kept */ 1002 u_long fr_chit; /* cached hit */ 1003 u_long fr_cmiss; /* cached miss */ 1004 u_long fr_tcpbad; /* TCP checksum check failures */ 1005 u_long fr_pull[2]; /* good and bad pullup attempts */ 1006 u_long fr_bad; /* bad IP packets to the filter */ 1007 u_long fr_ipv6; /* IPv6 packets in/out */ 1008 u_long fr_ppshit; /* dropped because of pps ceiling */ 1009 u_long fr_ipud; /* IP id update failures */ 1010 u_long fr_blocked[FRB_MAX_VALUE + 1]; 1011 } ipf_statistics_t; 1012 1013 /* 1014 * Log structure. Each packet header logged is prepended by one of these. 1015 * Following this in the log records read from the device will be an ipflog 1016 * structure which is then followed by any packet data. 1017 */ 1018 typedef struct iplog { 1019 u_32_t ipl_magic; 1020 u_int ipl_count; 1021 u_32_t ipl_seqnum; 1022 struct timeval ipl_time; 1023 size_t ipl_dsize; 1024 struct iplog *ipl_next; 1025 } iplog_t; 1026 1027 #define ipl_sec ipl_time.tv_sec 1028 #define ipl_usec ipl_time.tv_usec 1029 1030 #define IPL_MAGIC 0x49504c4d /* 'IPLM' */ 1031 #define IPL_MAGIC_NAT 0x49504c4e /* 'IPLN' */ 1032 #define IPL_MAGIC_STATE 0x49504c53 /* 'IPLS' */ 1033 #define IPLOG_SIZE sizeof(iplog_t) 1034 1035 typedef struct ipflog { 1036 #if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \ 1037 (defined(OpenBSD) && (OpenBSD >= 199603)) 1038 #else 1039 u_int fl_unit; 1040 #endif 1041 u_32_t fl_rule; 1042 u_32_t fl_flags; 1043 u_32_t fl_lflags; 1044 u_32_t fl_logtag; 1045 ipftag_t fl_nattag; 1046 u_short fl_plen; /* extra data after hlen */ 1047 u_short fl_loglevel; /* syslog log level */ 1048 char fl_group[FR_GROUPLEN]; 1049 u_char fl_hlen; /* length of IP headers saved */ 1050 u_char fl_dir; 1051 u_char fl_breason; /* from fin_reason */ 1052 u_char fl_family; /* address family of packet logged */ 1053 char fl_ifname[LIFNAMSIZ]; 1054 } ipflog_t; 1055 1056 #ifndef IPF_LOGGING 1057 # define IPF_LOGGING 0 1058 #endif 1059 #ifndef IPF_DEFAULT_PASS 1060 # define IPF_DEFAULT_PASS FR_PASS 1061 #endif 1062 1063 #define DEFAULT_IPFLOGSIZE 32768 1064 #ifndef IPFILTER_LOGSIZE 1065 # define IPFILTER_LOGSIZE DEFAULT_IPFLOGSIZE 1066 #else 1067 # if IPFILTER_LOGSIZE < 8192 1068 # error IPFILTER_LOGSIZE too small. Must be >= 8192 1069 # endif 1070 #endif 1071 1072 #define IPF_OPTCOPY 0x07ff00 /* bit mask of copied options */ 1073 1074 /* 1075 * Device filenames for reading log information. Use ipf on Solaris2 because 1076 * ipl is already a name used by something else. 1077 */ 1078 #ifndef IPL_NAME 1079 # if SOLARIS 1080 # define IPL_NAME "/dev/ipf" 1081 # else 1082 # define IPL_NAME "/dev/ipl" 1083 # endif 1084 #endif 1085 /* 1086 * Pathnames for various IP Filter control devices. Used by LKM 1087 * and userland, so defined here. 1088 */ 1089 #define IPNAT_NAME "/dev/ipnat" 1090 #define IPSTATE_NAME "/dev/ipstate" 1091 #define IPAUTH_NAME "/dev/ipauth" 1092 #define IPSYNC_NAME "/dev/ipsync" 1093 #define IPSCAN_NAME "/dev/ipscan" 1094 #define IPLOOKUP_NAME "/dev/iplookup" 1095 1096 #define IPL_LOGIPF 0 /* Minor device #'s for accessing logs */ 1097 #define IPL_LOGNAT 1 1098 #define IPL_LOGSTATE 2 1099 #define IPL_LOGAUTH 3 1100 #define IPL_LOGSYNC 4 1101 #define IPL_LOGSCAN 5 1102 #define IPL_LOGLOOKUP 6 1103 #define IPL_LOGCOUNT 7 1104 #define IPL_LOGMAX 7 1105 #define IPL_LOGSIZE IPL_LOGMAX + 1 1106 #define IPL_LOGALL -1 1107 #define IPL_LOGNONE -2 1108 1109 /* 1110 * For SIOCGETFS 1111 */ 1112 typedef struct friostat { 1113 ipf_statistics_t f_st[2]; 1114 frentry_t *f_ipf[2][2]; 1115 frentry_t *f_acct[2][2]; 1116 frentry_t *f_auth; 1117 struct frgroup *f_groups[IPL_LOGSIZE][2]; 1118 u_long f_froute[2]; 1119 u_long f_log_ok; 1120 u_long f_log_fail; 1121 u_long f_rb_no_mem; 1122 u_long f_rb_node_max; 1123 u_32_t f_ticks; 1124 int f_locks[IPL_LOGSIZE]; 1125 int f_defpass; /* default pass - from fr_pass */ 1126 int f_active; /* 1 or 0 - active rule set */ 1127 int f_running; /* 1 if running, else 0 */ 1128 int f_logging; /* 1 if enabled, else 0 */ 1129 int f_features; 1130 char f_version[32]; /* version string */ 1131 } friostat_t; 1132 1133 #define f_fin f_ipf[0] 1134 #define f_fout f_ipf[1] 1135 #define f_acctin f_acct[0] 1136 #define f_acctout f_acct[1] 1137 1138 #define IPF_FEAT_LKM 0x001 1139 #define IPF_FEAT_LOG 0x002 1140 #define IPF_FEAT_LOOKUP 0x004 1141 #define IPF_FEAT_BPF 0x008 1142 #define IPF_FEAT_COMPILED 0x010 1143 #define IPF_FEAT_CKSUM 0x020 1144 #define IPF_FEAT_SYNC 0x040 1145 #define IPF_FEAT_SCAN 0x080 1146 #define IPF_FEAT_IPV6 0x100 1147 1148 typedef struct optlist { 1149 u_short ol_val; 1150 int ol_bit; 1151 } optlist_t; 1152 1153 1154 /* 1155 * Group list structure. 1156 */ 1157 typedef struct frgroup { 1158 struct frgroup *fg_next; 1159 struct frentry *fg_head; 1160 struct frentry *fg_start; 1161 struct frgroup **fg_set; 1162 u_32_t fg_flags; 1163 int fg_ref; 1164 char fg_name[FR_GROUPLEN]; 1165 } frgroup_t; 1166 1167 #define FG_NAME(g) (*(g)->fg_name == '\0' ? "" : (g)->fg_name) 1168 1169 1170 /* 1171 * Used by state and NAT tables 1172 */ 1173 typedef struct icmpinfo { 1174 u_short ici_id; 1175 u_short ici_seq; 1176 u_char ici_type; 1177 } icmpinfo_t; 1178 1179 typedef struct udpinfo { 1180 u_short us_sport; 1181 u_short us_dport; 1182 } udpinfo_t; 1183 1184 1185 typedef struct tcpdata { 1186 u_32_t td_end; 1187 u_32_t td_maxend; 1188 u_32_t td_maxwin; 1189 u_32_t td_winscale; 1190 u_32_t td_maxseg; 1191 int td_winflags; 1192 } tcpdata_t; 1193 1194 #define TCP_WSCALE_MAX 14 1195 1196 #define TCP_WSCALE_SEEN 0x00000001 1197 #define TCP_WSCALE_FIRST 0x00000002 1198 #define TCP_SACK_PERMIT 0x00000004 1199 1200 1201 typedef struct tcpinfo { 1202 u_32_t ts_sport; 1203 u_32_t ts_dport; 1204 tcpdata_t ts_data[2]; 1205 } tcpinfo_t; 1206 1207 1208 /* 1209 * Structures to define a GRE header as seen in a packet. 1210 */ 1211 struct grebits { 1212 #if defined(sparc) 1213 u_32_t grb_ver:3; 1214 u_32_t grb_flags:3; 1215 u_32_t grb_A:1; 1216 u_32_t grb_recur:1; 1217 u_32_t grb_s:1; 1218 u_32_t grb_S:1; 1219 u_32_t grb_K:1; 1220 u_32_t grb_R:1; 1221 u_32_t grb_C:1; 1222 #else 1223 u_32_t grb_C:1; 1224 u_32_t grb_R:1; 1225 u_32_t grb_K:1; 1226 u_32_t grb_S:1; 1227 u_32_t grb_s:1; 1228 u_32_t grb_recur:1; 1229 u_32_t grb_A:1; 1230 u_32_t grb_flags:3; 1231 u_32_t grb_ver:3; 1232 #endif 1233 u_short grb_ptype; 1234 }; 1235 1236 typedef struct grehdr { 1237 union { 1238 struct grebits gru_bits; 1239 u_short gru_flags; 1240 } gr_un; 1241 u_short gr_len; 1242 u_short gr_call; 1243 } grehdr_t; 1244 1245 #define gr_flags gr_un.gru_flags 1246 #define gr_bits gr_un.gru_bits 1247 #define gr_ptype gr_bits.grb_ptype 1248 #define gr_C gr_bits.grb_C 1249 #define gr_R gr_bits.grb_R 1250 #define gr_K gr_bits.grb_K 1251 #define gr_S gr_bits.grb_S 1252 #define gr_s gr_bits.grb_s 1253 #define gr_recur gr_bits.grb_recur 1254 #define gr_A gr_bits.grb_A 1255 #define gr_ver gr_bits.grb_ver 1256 1257 /* 1258 * GRE information tracked by "keep state" 1259 */ 1260 typedef struct greinfo { 1261 u_short gs_call[2]; 1262 u_short gs_flags; 1263 u_short gs_ptype; 1264 } greinfo_t; 1265 1266 #define GRE_REV(x) ((ntohs(x) >> 13) & 7) 1267 1268 1269 /* 1270 * Format of an Authentication header 1271 */ 1272 typedef struct authhdr { 1273 u_char ah_next; 1274 u_char ah_plen; 1275 u_short ah_reserved; 1276 u_32_t ah_spi; 1277 u_32_t ah_seq; 1278 /* Following the sequence number field is 0 or more bytes of */ 1279 /* authentication data, as specified by ah_plen - RFC 2402. */ 1280 } authhdr_t; 1281 1282 1283 /* 1284 * Timeout tail queue list member 1285 */ 1286 typedef struct ipftqent { 1287 struct ipftqent **tqe_pnext; 1288 struct ipftqent *tqe_next; 1289 struct ipftq *tqe_ifq; 1290 void *tqe_parent; /* pointer back to NAT/state struct */ 1291 u_32_t tqe_die; /* when this entriy is to die */ 1292 u_32_t tqe_touched; 1293 int tqe_flags; 1294 int tqe_state[2]; /* current state of this entry */ 1295 } ipftqent_t; 1296 1297 #define TQE_RULEBASED 0x00000001 1298 #define TQE_DELETE 0x00000002 1299 1300 1301 /* 1302 * Timeout tail queue head for IPFilter 1303 */ 1304 typedef struct ipftq { 1305 ipfmutex_t ifq_lock; 1306 u_int ifq_ttl; 1307 ipftqent_t *ifq_head; 1308 ipftqent_t **ifq_tail; 1309 struct ipftq *ifq_next; 1310 struct ipftq **ifq_pnext; 1311 int ifq_ref; 1312 u_int ifq_flags; 1313 } ipftq_t; 1314 1315 #define IFQF_USER 0x01 /* User defined aging */ 1316 #define IFQF_DELETE 0x02 /* Marked for deletion */ 1317 #define IFQF_PROXY 0x04 /* Timeout queue in use by a proxy */ 1318 1319 #define IPFTQ_INIT(x,y,z) do { \ 1320 (x)->ifq_ttl = (y); \ 1321 (x)->ifq_head = NULL; \ 1322 (x)->ifq_ref = 1; \ 1323 (x)->ifq_tail = &(x)->ifq_head; \ 1324 MUTEX_INIT(&(x)->ifq_lock, (z)); \ 1325 } while (0) 1326 1327 #define IPF_HZ_MULT 1 1328 #define IPF_HZ_DIVIDE 2 /* How many times a second ipfilter */ 1329 /* checks its timeout queues. */ 1330 #define IPF_TTLVAL(x) (((x) / IPF_HZ_MULT) * IPF_HZ_DIVIDE) 1331 1332 typedef int (*ipftq_delete_fn_t)(struct ipf_main_softc_s *, void *); 1333 1334 1335 /* 1336 * Object structure description. For passing through in ioctls. 1337 */ 1338 typedef struct ipfobj { 1339 u_32_t ipfo_rev; /* IPFilter version number */ 1340 u_32_t ipfo_size; /* size of object at ipfo_ptr */ 1341 void *ipfo_ptr; /* pointer to object */ 1342 int ipfo_type; /* type of object being pointed to */ 1343 int ipfo_offset; /* bytes from ipfo_ptr where to start */ 1344 int ipfo_retval; /* return value */ 1345 u_char ipfo_xxxpad[28]; /* reserved for future use */ 1346 } ipfobj_t; 1347 1348 #define IPFOBJ_FRENTRY 0 /* struct frentry */ 1349 #define IPFOBJ_IPFSTAT 1 /* struct friostat */ 1350 #define IPFOBJ_IPFINFO 2 /* struct fr_info */ 1351 #define IPFOBJ_AUTHSTAT 3 /* struct fr_authstat */ 1352 #define IPFOBJ_FRAGSTAT 4 /* struct ipfrstat */ 1353 #define IPFOBJ_IPNAT 5 /* struct ipnat */ 1354 #define IPFOBJ_NATSTAT 6 /* struct natstat */ 1355 #define IPFOBJ_STATESAVE 7 /* struct ipstate_save */ 1356 #define IPFOBJ_NATSAVE 8 /* struct nat_save */ 1357 #define IPFOBJ_NATLOOKUP 9 /* struct natlookup */ 1358 #define IPFOBJ_IPSTATE 10 /* struct ipstate */ 1359 #define IPFOBJ_STATESTAT 11 /* struct ips_stat */ 1360 #define IPFOBJ_FRAUTH 12 /* struct frauth */ 1361 #define IPFOBJ_TUNEABLE 13 /* struct ipftune */ 1362 #define IPFOBJ_NAT 14 /* struct nat */ 1363 #define IPFOBJ_IPFITER 15 /* struct ipfruleiter */ 1364 #define IPFOBJ_GENITER 16 /* struct ipfgeniter */ 1365 #define IPFOBJ_GTABLE 17 /* struct ipftable */ 1366 #define IPFOBJ_LOOKUPITER 18 /* struct ipflookupiter */ 1367 #define IPFOBJ_STATETQTAB 19 /* struct ipftq * NSTATES */ 1368 #define IPFOBJ_IPFEXPR 20 1369 #define IPFOBJ_PROXYCTL 21 /* strct ap_ctl */ 1370 #define IPFOBJ_FRIPF 22 /* structfripf */ 1371 #define IPFOBJ_COUNT 23 /* How many #defines are above this? */ 1372 1373 1374 typedef union ipftunevalptr { 1375 void *ipftp_void; 1376 u_long *ipftp_long; 1377 u_int *ipftp_int; 1378 u_short *ipftp_short; 1379 u_char *ipftp_char; 1380 u_long ipftp_offset; 1381 } ipftunevalptr_t; 1382 1383 typedef union ipftuneval { 1384 u_long ipftu_long; 1385 u_int ipftu_int; 1386 u_short ipftu_short; 1387 u_char ipftu_char; 1388 } ipftuneval_t; 1389 1390 struct ipftuneable; 1391 typedef int (* ipftunefunc_t)(struct ipf_main_softc_s *, struct ipftuneable *, 1392 ipftuneval_t *); 1393 1394 typedef struct ipftuneable { 1395 ipftunevalptr_t ipft_una; 1396 const char *ipft_name; 1397 u_long ipft_min; 1398 u_long ipft_max; 1399 int ipft_sz; 1400 int ipft_flags; 1401 struct ipftuneable *ipft_next; 1402 ipftunefunc_t ipft_func; 1403 } ipftuneable_t; 1404 1405 #define ipft_addr ipft_una.ipftp_void 1406 #define ipft_plong ipft_una.ipftp_long 1407 #define ipft_pint ipft_una.ipftp_int 1408 #define ipft_pshort ipft_una.ipftp_short 1409 #define ipft_pchar ipft_una.ipftp_char 1410 1411 #define IPFT_RDONLY 1 /* read-only */ 1412 #define IPFT_WRDISABLED 2 /* write when disabled only */ 1413 1414 typedef struct ipftune { 1415 void *ipft_cookie; 1416 ipftuneval_t ipft_un; 1417 u_long ipft_min; 1418 u_long ipft_max; 1419 int ipft_sz; 1420 int ipft_flags; 1421 char ipft_name[80]; 1422 } ipftune_t; 1423 1424 #define ipft_vlong ipft_un.ipftu_long 1425 #define ipft_vint ipft_un.ipftu_int 1426 #define ipft_vshort ipft_un.ipftu_short 1427 #define ipft_vchar ipft_un.ipftu_char 1428 1429 /* 1430 * Hash table header 1431 */ 1432 #define IPFHASH(x,y) typedef struct { \ 1433 ipfrwlock_t ipfh_lock; \ 1434 struct x *ipfh_head; \ 1435 } y 1436 1437 /* 1438 ** HPUX Port 1439 */ 1440 #ifdef __hpux 1441 /* HP-UX locking sequence deadlock detection module lock MAJOR ID */ 1442 # define IPF_SMAJ 0 /* temp assignment XXX, not critical */ 1443 #endif 1444 1445 #if !defined(CDEV_MAJOR) && defined (__FreeBSD_version) && \ 1446 (__FreeBSD_version >= 220000) 1447 # define CDEV_MAJOR 79 1448 #endif 1449 1450 /* 1451 * Post NetBSD 1.2 has the PFIL interface for packet filters. This turns 1452 * on those hooks. We don't need any special mods in non-IP Filter code 1453 * with this! 1454 */ 1455 #if (defined(NetBSD) && (NetBSD > 199609) && (NetBSD <= 1991011)) || \ 1456 (defined(NetBSD1_2) && NetBSD1_2 > 1) || \ 1457 (defined(__FreeBSD__) && (__FreeBSD_version >= 500043)) 1458 # if (NetBSD >= 199905) && !defined(PFIL_HOOKS) 1459 # define PFIL_HOOKS 1460 # endif 1461 # ifdef PFIL_HOOKS 1462 # define NETBSD_PF 1463 # endif 1464 #endif 1465 1466 #ifdef _KERNEL 1467 # define FR_VERBOSE(verb_pr) 1468 # define FR_DEBUG(verb_pr) 1469 #else 1470 extern void ipfkdebug(char *, ...); 1471 extern void ipfkverbose(char *, ...); 1472 # define FR_VERBOSE(verb_pr) ipfkverbose verb_pr 1473 # define FR_DEBUG(verb_pr) ipfkdebug verb_pr 1474 #endif 1475 1476 /* 1477 * 1478 */ 1479 typedef struct ipfruleiter { 1480 int iri_inout; 1481 char iri_group[FR_GROUPLEN]; 1482 int iri_active; 1483 int iri_nrules; 1484 int iri_v; /* No longer used (compatibility) */ 1485 frentry_t *iri_rule; 1486 } ipfruleiter_t; 1487 1488 /* 1489 * Values for iri_inout 1490 */ 1491 #define F_IN 0 1492 #define F_OUT 1 1493 #define F_ACIN 2 1494 #define F_ACOUT 3 1495 1496 1497 typedef struct ipfgeniter { 1498 int igi_type; 1499 int igi_nitems; 1500 void *igi_data; 1501 } ipfgeniter_t; 1502 1503 #define IPFGENITER_IPF 0 1504 #define IPFGENITER_NAT 1 1505 #define IPFGENITER_IPNAT 2 1506 #define IPFGENITER_FRAG 3 1507 #define IPFGENITER_AUTH 4 1508 #define IPFGENITER_STATE 5 1509 #define IPFGENITER_NATFRAG 6 1510 #define IPFGENITER_HOSTMAP 7 1511 #define IPFGENITER_LOOKUP 8 1512 1513 typedef struct ipftable { 1514 int ita_type; 1515 void *ita_table; 1516 } ipftable_t; 1517 1518 #define IPFTABLE_BUCKETS 1 1519 #define IPFTABLE_BUCKETS_NATIN 2 1520 #define IPFTABLE_BUCKETS_NATOUT 3 1521 1522 1523 typedef struct ipf_v4_masktab_s { 1524 u_32_t imt4_active[33]; 1525 int imt4_masks[33]; 1526 int imt4_max; 1527 } ipf_v4_masktab_t; 1528 1529 typedef struct ipf_v6_masktab_s { 1530 i6addr_t imt6_active[129]; 1531 int imt6_masks[129]; 1532 int imt6_max; 1533 } ipf_v6_masktab_t; 1534 1535 1536 /* 1537 * 1538 */ 1539 typedef struct ipftoken { 1540 struct ipftoken *ipt_next; 1541 struct ipftoken **ipt_pnext; 1542 void *ipt_ctx; 1543 void *ipt_data; 1544 u_long ipt_die; 1545 int ipt_type; 1546 int ipt_uid; 1547 int ipt_subtype; 1548 int ipt_ref; 1549 int ipt_complete; 1550 } ipftoken_t; 1551 1552 1553 /* 1554 * 1555 */ 1556 typedef struct ipfexp { 1557 int ipfe_cmd; 1558 int ipfe_not; 1559 int ipfe_narg; 1560 int ipfe_size; 1561 int ipfe_arg0[1]; 1562 } ipfexp_t; 1563 1564 /* 1565 * Currently support commands (ipfe_cmd) 1566 * 32bits is split up follows: 1567 * aabbcccc 1568 * aa = 0 = packet matching, 1 = meta data matching 1569 * bb = IP protocol number 1570 * cccc = command 1571 */ 1572 #define IPF_EXP_IP_PR 0x00000001 1573 #define IPF_EXP_IP_ADDR 0x00000002 1574 #define IPF_EXP_IP_SRCADDR 0x00000003 1575 #define IPF_EXP_IP_DSTADDR 0x00000004 1576 #define IPF_EXP_IP6_ADDR 0x00000005 1577 #define IPF_EXP_IP6_SRCADDR 0x00000006 1578 #define IPF_EXP_IP6_DSTADDR 0x00000007 1579 #define IPF_EXP_TCP_FLAGS 0x00060001 1580 #define IPF_EXP_TCP_PORT 0x00060002 1581 #define IPF_EXP_TCP_SPORT 0x00060003 1582 #define IPF_EXP_TCP_DPORT 0x00060004 1583 #define IPF_EXP_UDP_PORT 0x00110002 1584 #define IPF_EXP_UDP_SPORT 0x00110003 1585 #define IPF_EXP_UDP_DPORT 0x00110004 1586 #define IPF_EXP_IDLE_GT 0x01000001 1587 #define IPF_EXP_TCP_STATE 0x01060002 1588 #define IPF_EXP_END 0xffffffff 1589 1590 #define ONE_DAY IPF_TTLVAL(1 * 86400) /* 1 day */ 1591 #define FIVE_DAYS (5 * ONE_DAY) 1592 1593 typedef struct ipf_main_softc_s { 1594 struct ipf_main_softc_s *ipf_next; 1595 ipfmutex_t ipf_rw; 1596 ipfmutex_t ipf_timeoutlock; 1597 ipfrwlock_t ipf_mutex; 1598 ipfrwlock_t ipf_frag; 1599 ipfrwlock_t ipf_global; 1600 ipfrwlock_t ipf_tokens; 1601 ipfrwlock_t ipf_state; 1602 ipfrwlock_t ipf_nat; 1603 ipfrwlock_t ipf_natfrag; 1604 ipfrwlock_t ipf_poolrw; 1605 int ipf_dynamic_softc; 1606 int ipf_refcnt; 1607 int ipf_running; 1608 int ipf_flags; 1609 int ipf_active; 1610 int ipf_control_forwarding; 1611 int ipf_update_ipid; 1612 int ipf_chksrc; /* causes a system crash if enabled */ 1613 int ipf_pass; 1614 int ipf_minttl; 1615 int ipf_icmpminfragmtu; 1616 int ipf_interror; /* Should be in a struct that is per */ 1617 /* thread or process. Does not belong */ 1618 /* here but there's a lot more work */ 1619 /* in doing that properly. For now, */ 1620 /* it is squatting. */ 1621 u_int ipf_tcpidletimeout; 1622 u_int ipf_tcpclosewait; 1623 u_int ipf_tcplastack; 1624 u_int ipf_tcptimewait; 1625 u_int ipf_tcptimeout; 1626 u_int ipf_tcpsynsent; 1627 u_int ipf_tcpsynrecv; 1628 u_int ipf_tcpclosed; 1629 u_int ipf_tcphalfclosed; 1630 u_int ipf_udptimeout; 1631 u_int ipf_udpacktimeout; 1632 u_int ipf_icmptimeout; 1633 u_int ipf_icmpacktimeout; 1634 u_int ipf_iptimeout; 1635 u_long ipf_ticks; 1636 u_long ipf_userifqs; 1637 u_long ipf_rb_no_mem; 1638 u_long ipf_rb_node_max; 1639 u_long ipf_frouteok[2]; 1640 ipftuneable_t *ipf_tuners; 1641 void *ipf_frag_soft; 1642 void *ipf_nat_soft; 1643 void *ipf_state_soft; 1644 void *ipf_auth_soft; 1645 void *ipf_proxy_soft; 1646 void *ipf_sync_soft; 1647 void *ipf_lookup_soft; 1648 void *ipf_log_soft; 1649 struct frgroup *ipf_groups[IPL_LOGSIZE][2]; 1650 frentry_t *ipf_rules[2][2]; 1651 frentry_t *ipf_acct[2][2]; 1652 frentry_t *ipf_rule_explist[2]; 1653 ipftoken_t *ipf_token_head; 1654 ipftoken_t **ipf_token_tail; 1655 #if defined(__FreeBSD_version) && (__FreeBSD_version >= 300000) && \ 1656 defined(_KERNEL) 1657 struct callout_handle ipf_slow_ch; 1658 #endif 1659 #if defined(linux) && defined(_KERNEL) 1660 struct timer_list ipf_timer; 1661 #endif 1662 #if NETBSD_GE_REV(104040000) 1663 struct callout ipf_slow_ch; 1664 #endif 1665 #if SOLARIS 1666 # if SOLARIS2 >= 7 1667 timeout_id_t ipf_slow_ch; 1668 # else 1669 int ipf_slow_ch; 1670 # endif 1671 #endif 1672 #if defined(_KERNEL) 1673 # if SOLARIS 1674 struct pollhead ipf_poll_head[IPL_LOGSIZE]; 1675 void *ipf_dip; 1676 # if defined(INSTANCES) 1677 int ipf_get_loopback; 1678 u_long ipf_idnum; 1679 net_handle_t ipf_nd_v4; 1680 net_handle_t ipf_nd_v6; 1681 hook_t *ipf_hk_v4_in; 1682 hook_t *ipf_hk_v4_out; 1683 hook_t *ipf_hk_v4_nic; 1684 hook_t *ipf_hk_v6_in; 1685 hook_t *ipf_hk_v6_out; 1686 hook_t *ipf_hk_v6_nic; 1687 hook_t *ipf_hk_loop_v4_in; 1688 hook_t *ipf_hk_loop_v4_out; 1689 hook_t *ipf_hk_loop_v6_in; 1690 hook_t *ipf_hk_loop_v6_out; 1691 # endif 1692 # else 1693 # if defined(linux) && defined(_KERNEL) 1694 struct poll_table_struct ipf_selwait[IPL_LOGSIZE]; 1695 wait_queue_head_t iplh_linux[IPL_LOGSIZE]; 1696 # else 1697 struct selinfo ipf_selwait[IPL_LOGSIZE]; 1698 # endif 1699 # endif 1700 #endif 1701 void *ipf_slow; 1702 ipf_statistics_t ipf_stats[2]; 1703 u_char ipf_iss_secret[32]; 1704 u_short ipf_ip_id; 1705 } ipf_main_softc_t; 1706 1707 #define IPFERROR(_e) do { softc->ipf_interror = (_e); \ 1708 DT1(user_error, int, _e); \ 1709 } while (0) 1710 1711 #ifndef _KERNEL 1712 extern int ipf_check(void *, struct ip *, int, void *, int, mb_t **); 1713 extern int (*ipf_checkp)(ip_t *, int, void *, int, mb_t **); 1714 extern struct ifnet *get_unit(char *, int); 1715 extern char *get_ifname(struct ifnet *); 1716 extern int ipfioctl(ipf_main_softc_t *, int, ioctlcmd_t, 1717 void *, int); 1718 extern void m_freem(mb_t *); 1719 extern size_t msgdsize(mb_t *); 1720 extern int bcopywrap(void *, void *, size_t); 1721 #else /* #ifndef _KERNEL */ 1722 # if defined(__NetBSD__) && defined(PFIL_HOOKS) 1723 extern void ipfilterattach(int); 1724 # endif 1725 extern int ipl_enable(void); 1726 extern int ipl_disable(void); 1727 # ifdef MENTAT 1728 extern int ipf_check(void *, struct ip *, int, void *, int, void *, 1729 mblk_t **); 1730 # if SOLARIS 1731 extern void ipf_prependmbt(fr_info_t *, mblk_t *); 1732 # if SOLARIS2 >= 7 1733 extern int ipfioctl(dev_t, int, intptr_t, int, cred_t *, int *); 1734 # else 1735 extern int ipfioctl(dev_t, int, int *, int, cred_t *, int *); 1736 # endif 1737 # endif 1738 # ifdef __hpux 1739 extern int ipfioctl(dev_t, int, caddr_t, int); 1740 extern int ipf_select(dev_t, int); 1741 # endif 1742 extern int ipf_qout(queue_t *, mblk_t *); 1743 # else /* MENTAT */ 1744 extern int ipf_check(void *, struct ip *, int, void *, int, mb_t **); 1745 extern int (*fr_checkp)(ip_t *, int, void *, int, mb_t **); 1746 extern size_t mbufchainlen(mb_t *); 1747 # ifdef __sgi 1748 # include <sys/cred.h> 1749 extern int ipfioctl(dev_t, int, caddr_t, int, cred_t *, int *); 1750 extern int ipfilter_sgi_attach(void); 1751 extern void ipfilter_sgi_detach(void); 1752 extern void ipfilter_sgi_intfsync(void); 1753 # else 1754 # ifdef IPFILTER_LKM 1755 extern int ipf_identify(char *); 1756 # endif 1757 # if BSDOS_GE_REV(199510) || FREEBSD_GE_REV(220000) || \ 1758 (defined(NetBSD) && (NetBSD >= 199511)) || defined(__OpenBSD__) 1759 # if defined(__NetBSD__) || BSDOS_GE_REV(199701) || \ 1760 defined(__OpenBSD__) || FREEBSD_GE_REV(300000) 1761 # if (__FreeBSD_version >= 500024) 1762 # if (__FreeBSD_version >= 502116) 1763 extern int ipfioctl(struct cdev*, u_long, caddr_t, int, struct thread *); 1764 # else 1765 extern int ipfioctl(dev_t, u_long, caddr_t, int, struct thread *); 1766 # endif /* __FreeBSD_version >= 502116 */ 1767 # else 1768 # if NETBSD_GE_REV(499001000) 1769 extern int ipfioctl(dev_t, u_long, void *, int, struct lwp *); 1770 # else 1771 # if NETBSD_GE_REV(399001400) 1772 extern int ipfioctl(dev_t, u_long, caddr_t, int, struct lwp *); 1773 # else 1774 extern int ipfioctl(dev_t, u_long, caddr_t, int, struct proc *); 1775 # endif 1776 # endif 1777 # endif /* __FreeBSD_version >= 500024 */ 1778 # else 1779 extern int ipfioctl(dev_t, int, caddr_t, int, struct proc *); 1780 # endif 1781 # else 1782 # ifdef linux 1783 extern int ipfioctl(struct inode *, struct file *, u_int, u_long); 1784 # else 1785 extern int ipfioctl(dev_t, int, caddr_t, int); 1786 # endif 1787 # endif /* (_BSDI_VERSION >= 199510) */ 1788 # endif /* __ sgi */ 1789 # endif /* MENTAT */ 1790 1791 # if defined(__FreeBSD_version) 1792 extern int ipf_pfil_hook(void); 1793 extern int ipf_pfil_unhook(void); 1794 extern void ipf_event_reg(void); 1795 extern void ipf_event_dereg(void); 1796 # endif 1797 1798 # if defined(INSTANCES) 1799 extern ipf_main_softc_t *ipf_find_softc(u_long); 1800 extern int ipf_set_loopback(ipf_main_softc_t *, ipftuneable_t *, 1801 ipftuneval_t *); 1802 # endif 1803 1804 #endif /* #ifndef _KERNEL */ 1805 1806 extern char *memstr(const char *, char *, size_t, size_t); 1807 extern int count4bits(u_32_t); 1808 #ifdef USE_INET6 1809 extern int count6bits(u_32_t *); 1810 #endif 1811 extern int frrequest(ipf_main_softc_t *, int, ioctlcmd_t, void *, 1812 int, int); 1813 extern char *getifname(struct ifnet *); 1814 extern int ipfattach(ipf_main_softc_t *); 1815 extern int ipfdetach(ipf_main_softc_t *); 1816 extern u_short ipf_cksum(u_short *, int); 1817 extern int copyinptr(ipf_main_softc_t *, void *, void *, size_t); 1818 extern int copyoutptr(ipf_main_softc_t *, void *, void *, size_t); 1819 extern int ipf_fastroute(mb_t *, mb_t **, fr_info_t *, frdest_t *); 1820 extern int ipf_inject(fr_info_t *, mb_t *); 1821 extern int ipf_inobj(ipf_main_softc_t *, void *, ipfobj_t *, 1822 void *, int); 1823 extern int ipf_inobjsz(ipf_main_softc_t *, void *, void *, 1824 int , int); 1825 extern int ipf_ioctlswitch(ipf_main_softc_t *, int, void *, 1826 ioctlcmd_t, int, int, void *); 1827 extern int ipf_ipf_ioctl(ipf_main_softc_t *, void *, ioctlcmd_t, 1828 int, int, void *); 1829 extern int ipf_ipftune(ipf_main_softc_t *, ioctlcmd_t, void *); 1830 extern int ipf_matcharray_load(ipf_main_softc_t *, void *, 1831 ipfobj_t *, int **); 1832 extern int ipf_matcharray_verify(int *, int); 1833 extern int ipf_outobj(ipf_main_softc_t *, void *, void *, int); 1834 extern int ipf_outobjk(ipf_main_softc_t *, ipfobj_t *, void *); 1835 extern int ipf_outobjsz(ipf_main_softc_t *, void *, void *, 1836 int, int); 1837 extern void *ipf_pullup(mb_t *, fr_info_t *, int); 1838 extern int ipf_resolvedest(ipf_main_softc_t *, char *, 1839 struct frdest *, int); 1840 extern int ipf_resolvefunc(ipf_main_softc_t *, void *); 1841 extern void *ipf_resolvenic(ipf_main_softc_t *, char *, int); 1842 extern int ipf_send_icmp_err(int, fr_info_t *, int); 1843 extern int ipf_send_reset(fr_info_t *); 1844 #if (defined(__FreeBSD_version) && (__FreeBSD_version < 501000)) || \ 1845 !defined(_KERNEL) || defined(linux) 1846 extern int ppsratecheck(struct timeval *, int *, int); 1847 #endif 1848 extern void ipf_apply_timeout(ipftq_t *, u_int); 1849 extern ipftq_t *ipf_addtimeoutqueue(ipf_main_softc_t *, ipftq_t **, 1850 u_int); 1851 extern void ipf_deletequeueentry(ipftqent_t *); 1852 extern int ipf_deletetimeoutqueue(ipftq_t *); 1853 extern void ipf_freetimeoutqueue(ipf_main_softc_t *, ipftq_t *); 1854 extern void ipf_movequeue(u_long, ipftqent_t *, ipftq_t *, 1855 ipftq_t *); 1856 extern void ipf_queueappend(u_long, ipftqent_t *, ipftq_t *, void *); 1857 extern void ipf_queueback(u_long, ipftqent_t *); 1858 extern int ipf_queueflush(ipf_main_softc_t *, ipftq_delete_fn_t, 1859 ipftq_t *, ipftq_t *, u_int *, int, int); 1860 extern void ipf_queuefront(ipftqent_t *); 1861 extern int ipf_settimeout_tcp(ipftuneable_t *, ipftuneval_t *, 1862 ipftq_t *); 1863 extern int ipf_checkv4sum(fr_info_t *); 1864 extern int ipf_checkl4sum(fr_info_t *); 1865 extern int ipf_ifpfillv4addr(int, struct sockaddr_in *, 1866 struct sockaddr_in *, struct in_addr *, 1867 struct in_addr *); 1868 extern int ipf_coalesce(fr_info_t *); 1869 #ifdef USE_INET6 1870 extern int ipf_checkv6sum(fr_info_t *); 1871 extern int ipf_ifpfillv6addr(int, struct sockaddr_in6 *, 1872 struct sockaddr_in6 *, i6addr_t *, 1873 i6addr_t *); 1874 #endif 1875 1876 extern int ipf_tune_add(ipf_main_softc_t *, ipftuneable_t *); 1877 extern int ipf_tune_add_array(ipf_main_softc_t *, ipftuneable_t *); 1878 extern int ipf_tune_del(ipf_main_softc_t *, ipftuneable_t *); 1879 extern int ipf_tune_del_array(ipf_main_softc_t *, ipftuneable_t *); 1880 extern int ipf_tune_array_link(ipf_main_softc_t *, ipftuneable_t *); 1881 extern int ipf_tune_array_unlink(ipf_main_softc_t *, 1882 ipftuneable_t *); 1883 extern ipftuneable_t *ipf_tune_array_copy(void *, size_t, 1884 ipftuneable_t *); 1885 1886 extern int ipf_pr_pullup(fr_info_t *, int); 1887 1888 extern int ipf_flush(ipf_main_softc_t *, minor_t, int); 1889 extern frgroup_t *ipf_group_add(ipf_main_softc_t *, char *, void *, 1890 u_32_t, minor_t, int); 1891 extern void ipf_group_del(ipf_main_softc_t *, frgroup_t *, frentry_t *); 1892 extern int ipf_derefrule(ipf_main_softc_t *, frentry_t **); 1893 extern frgroup_t *ipf_findgroup(ipf_main_softc_t *, char *, minor_t, 1894 int, frgroup_t ***); 1895 1896 extern int ipf_log_init(void); 1897 extern int ipf_log_bytesused(ipf_main_softc_t *, int); 1898 extern int ipf_log_canread(ipf_main_softc_t *, int); 1899 extern int ipf_log_clear(ipf_main_softc_t *, minor_t); 1900 extern u_long ipf_log_failures(ipf_main_softc_t *, int); 1901 extern int ipf_log_read(ipf_main_softc_t *, minor_t, uio_t *); 1902 extern int ipf_log_items(ipf_main_softc_t *, int, fr_info_t *, 1903 void **, size_t *, int *, int); 1904 extern u_long ipf_log_logok(ipf_main_softc_t *, int); 1905 extern void ipf_log_unload(ipf_main_softc_t *); 1906 extern int ipf_log_pkt(fr_info_t *, u_int); 1907 extern int ipf_log_pkt(fr_info_t *, u_int); 1908 1909 extern frentry_t *ipf_acctpkt(fr_info_t *, u_32_t *); 1910 extern u_short fr_cksum(fr_info_t *, ip_t *, int, void *); 1911 extern void ipf_deinitialise(ipf_main_softc_t *); 1912 extern int ipf_deliverlocal(ipf_main_softc_t *, int, void *, 1913 i6addr_t *); 1914 extern frentry_t *ipf_dstgrpmap(fr_info_t *, u_32_t *); 1915 extern void ipf_fixskip(frentry_t **, frentry_t *, int); 1916 extern void ipf_forgetifp(ipf_main_softc_t *, void *); 1917 extern frentry_t *ipf_getrulen(ipf_main_softc_t *, int, char *, 1918 u_32_t); 1919 extern int ipf_ifpaddr(ipf_main_softc_t *, int, int, void *, 1920 i6addr_t *, i6addr_t *); 1921 extern int ipf_initialise(void); 1922 extern int ipf_lock(void *, int *); 1923 extern int ipf_makefrip(int, ip_t *, fr_info_t *); 1924 extern void ipf_inet_mask_add(int, ipf_v4_masktab_t *); 1925 extern void ipf_inet_mask_del(int, ipf_v4_masktab_t *); 1926 #ifdef USE_INET6 1927 extern void ipf_inet6_mask_add(int, i6addr_t *, ipf_v6_masktab_t *); 1928 extern void ipf_inet6_mask_del(int, i6addr_t *, ipf_v6_masktab_t *); 1929 #endif 1930 extern int ipf_matchtag(ipftag_t *, ipftag_t *); 1931 extern int ipf_matchicmpqueryreply(int, icmpinfo_t *, 1932 struct icmp *, int); 1933 extern u_32_t ipf_newisn(fr_info_t *); 1934 extern u_short ipf_nextipid(fr_info_t *); 1935 extern u_int ipf_pcksum(fr_info_t *, int, u_int); 1936 extern void ipf_rule_expire(ipf_main_softc_t *); 1937 extern int ipf_scanlist(fr_info_t *, u_32_t); 1938 extern frentry_t *ipf_srcgrpmap(fr_info_t *, u_32_t *); 1939 extern int ipf_tcpudpchk(fr_ip_t *, frtuc_t *); 1940 extern int ipf_verifysrc(fr_info_t *fin); 1941 extern int ipf_zerostats(ipf_main_softc_t *, void *); 1942 extern int ipf_getnextrule(ipf_main_softc_t *, ipftoken_t *, 1943 void *); 1944 extern int ipf_sync(ipf_main_softc_t *, void *); 1945 extern int ipf_token_deref(ipf_main_softc_t *, ipftoken_t *); 1946 extern void ipf_token_expire(ipf_main_softc_t *); 1947 extern ipftoken_t *ipf_token_find(ipf_main_softc_t *, int, int, 1948 void *); 1949 extern void ipf_token_free(ipf_main_softc_t *, ipftoken_t *); 1950 extern int ipf_token_del(ipf_main_softc_t *, int, int, 1951 void *); 1952 extern void ipf_token_mark_complete(ipftoken_t *); 1953 extern int ipf_genericiter(ipf_main_softc_t *, void *, 1954 int, void *); 1955 #ifdef IPFILTER_LOOKUP 1956 extern void *ipf_resolvelookup(int, u_int, u_int, 1957 lookupfunc_t *); 1958 #endif 1959 extern u_32_t ipf_random(void); 1960 1961 extern int ipf_main_load(void); 1962 extern void *ipf_main_soft_create(void *); 1963 extern void ipf_main_soft_destroy(ipf_main_softc_t *); 1964 extern int ipf_main_soft_init(ipf_main_softc_t *); 1965 extern int ipf_main_soft_fini(ipf_main_softc_t *); 1966 extern int ipf_main_unload(void); 1967 extern int ipf_load_all(void); 1968 extern int ipf_unload_all(void); 1969 extern void ipf_destroy_all(ipf_main_softc_t *); 1970 extern ipf_main_softc_t *ipf_create_all(void *); 1971 extern int ipf_init_all(ipf_main_softc_t *); 1972 extern int ipf_fini_all(ipf_main_softc_t *); 1973 extern void ipf_log_soft_destroy(ipf_main_softc_t *, void *); 1974 extern void *ipf_log_soft_create(ipf_main_softc_t *); 1975 extern int ipf_log_soft_init(ipf_main_softc_t *, void *); 1976 extern int ipf_log_soft_fini(ipf_main_softc_t *, void *); 1977 extern int ipf_log_main_load(void); 1978 extern int ipf_log_main_unload(void); 1979 1980 1981 extern char ipfilter_version[]; 1982 #ifdef USE_INET6 1983 extern int icmptoicmp6types[ICMP_MAXTYPE+1]; 1984 extern int icmptoicmp6unreach[ICMP_MAX_UNREACH]; 1985 extern int icmpreplytype6[ICMP6_MAXTYPE + 1]; 1986 #endif 1987 #ifdef IPFILTER_COMPAT 1988 extern int ipf_in_compat(ipf_main_softc_t *, ipfobj_t *, void *,int); 1989 extern int ipf_out_compat(ipf_main_softc_t *, ipfobj_t *, void *); 1990 #endif 1991 extern int icmpreplytype4[ICMP_MAXTYPE + 1]; 1992 1993 extern int ipf_ht_node_add(ipf_main_softc_t *, host_track_t *, 1994 int, i6addr_t *); 1995 extern int ipf_ht_node_del(host_track_t *, int, i6addr_t *); 1996 extern void ipf_rb_ht_flush(host_track_t *); 1997 extern void ipf_rb_ht_freenode(host_node_t *, void *); 1998 extern void ipf_rb_ht_init(host_track_t *); 1999 2000 #endif /* _NETINET_IP_FIL_H_ */ 2001