ip_fil.h revision 342607
1/* 2 * Copyright (C) 2012 by Darren Reed. 3 * 4 * See the IPFILTER.LICENCE file for details on licencing. 5 * 6 * @(#)ip_fil.h 1.35 6/5/96 7 * $FreeBSD: stable/11/sys/contrib/ipfilter/netinet/ip_fil.h 342607 2018-12-30 04:37:49Z cy $ 8 * Id: ip_fil.h,v 2.170.2.51 2007/10/10 09:48:03 darrenr Exp $ 9 */ 10 11#ifndef __IP_FIL_H__ 12#define __IP_FIL_H__ 13 14#if !defined(linux) || !defined(_KERNEL) 15# include <netinet/in.h> 16#endif 17 18#include "netinet/ip_compat.h" 19#include "netinet/ipf_rb.h" 20#if NETBSD_GE_REV(104040000) 21# include <sys/callout.h> 22#endif 23#if defined(BSD) && defined(_KERNEL) 24# if NETBSD_LT_REV(399000000) || defined(__osf__) || FREEBSD_LT_REV(500043) 25# include <sys/select.h> 26# else 27# include <sys/selinfo.h> 28# endif 29#endif 30 31#ifndef SOLARIS 32# if defined(sun) && (defined(__svr4__) || defined(__SVR4)) 33# define SOLARIS 1 34# else 35# define SOLARIS 0 36# endif 37#endif 38 39#ifndef __P 40# ifdef __STDC__ 41# define __P(x) x 42# else 43# define __P(x) () 44# endif 45#endif 46 47#if defined(__STDC__) || defined(__GNUC__) || defined(_AIX51) 48# define SIOCADAFR _IOW('r', 60, struct ipfobj) 49# define SIOCRMAFR _IOW('r', 61, struct ipfobj) 50# define SIOCSETFF _IOW('r', 62, u_int) 51# define SIOCGETFF _IOR('r', 63, u_int) 52# define SIOCGETFS _IOWR('r', 64, struct ipfobj) 53# define SIOCIPFFL _IOWR('r', 65, int) 54# define SIOCIPFFB _IOR('r', 66, int) 55# define SIOCADIFR _IOW('r', 67, struct ipfobj) 56# define SIOCRMIFR _IOW('r', 68, struct ipfobj) 57# define SIOCSWAPA _IOR('r', 69, u_int) 58# define SIOCINAFR _IOW('r', 70, struct ipfobj) 59# define SIOCINIFR _IOW('r', 71, struct ipfobj) 60# define SIOCFRENB _IOW('r', 72, u_int) 61# define SIOCFRSYN _IOW('r', 73, u_int) 62# define SIOCFRZST _IOWR('r', 74, struct ipfobj) 63# define SIOCZRLST _IOWR('r', 75, struct ipfobj) 64# define SIOCAUTHW _IOWR('r', 76, struct ipfobj) 65# define SIOCAUTHR _IOWR('r', 77, struct ipfobj) 66# define SIOCSTAT1 _IOWR('r', 78, struct ipfobj) 67# define SIOCSTLCK _IOWR('r', 79, u_int) 68# define SIOCSTPUT _IOWR('r', 80, struct ipfobj) 69# define SIOCSTGET _IOWR('r', 81, struct ipfobj) 70# define SIOCSTGSZ _IOWR('r', 82, struct ipfobj) 71# define SIOCSTAT2 _IOWR('r', 83, struct ipfobj) 72# define SIOCSETLG _IOWR('r', 84, int) 73# define SIOCGETLG _IOWR('r', 85, int) 74# define SIOCFUNCL _IOWR('r', 86, struct ipfunc_resolve) 75# define SIOCIPFGETNEXT _IOWR('r', 87, struct ipfobj) 76# define SIOCIPFGET _IOWR('r', 88, struct ipfobj) 77# define SIOCIPFSET _IOWR('r', 89, struct ipfobj) 78# define SIOCIPFL6 _IOWR('r', 90, int) 79# define SIOCIPFITER _IOWR('r', 91, struct ipfobj) 80# define SIOCGENITER _IOWR('r', 92, struct ipfobj) 81# define SIOCGTABL _IOWR('r', 93, struct ipfobj) 82# define SIOCIPFDELTOK _IOWR('r', 94, int) 83# define SIOCLOOKUPITER _IOWR('r', 95, struct ipfobj) 84# define SIOCGTQTAB _IOWR('r', 96, struct ipfobj) 85# define SIOCMATCHFLUSH _IOWR('r', 97, struct ipfobj) 86# define SIOCIPFINTERROR _IOR('r', 98, int) 87#else 88# define SIOCADAFR _IOW(r, 60, struct ipfobj) 89# define SIOCRMAFR _IOW(r, 61, struct ipfobj) 90# define SIOCSETFF _IOW(r, 62, u_int) 91# define SIOCGETFF _IOR(r, 63, u_int) 92# define SIOCGETFS _IOWR(r, 64, struct ipfobj) 93# define SIOCIPFFL _IOWR(r, 65, int) 94# define SIOCIPFFB _IOR(r, 66, int) 95# define SIOCADIFR _IOW(r, 67, struct ipfobj) 96# define SIOCRMIFR _IOW(r, 68, struct ipfobj) 97# define SIOCSWAPA _IOR(r, 69, u_int) 98# define SIOCINAFR _IOW(r, 70, struct ipfobj) 99# define SIOCINIFR _IOW(r, 71, struct ipfobj) 100# define SIOCFRENB _IOW(r, 72, u_int) 101# define SIOCFRSYN _IOW(r, 73, u_int) 102# define SIOCFRZST _IOWR(r, 74, struct ipfobj) 103# define SIOCZRLST _IOWR(r, 75, struct ipfobj) 104# define SIOCAUTHW _IOWR(r, 76, struct ipfobj) 105# define SIOCAUTHR _IOWR(r, 77, struct ipfobj) 106# define SIOCSTAT1 _IOWR(r, 78, struct ipfobj) 107# define SIOCSTLCK _IOWR(r, 79, u_int) 108# define SIOCSTPUT _IOWR(r, 80, struct ipfobj) 109# define SIOCSTGET _IOWR(r, 81, struct ipfobj) 110# define SIOCSTGSZ _IOWR(r, 82, struct ipfobj) 111# define SIOCSTAT2 _IOWR(r, 83, struct ipfobj) 112# define SIOCSETLG _IOWR(r, 84, int) 113# define SIOCGETLG _IOWR(r, 85, int) 114# define SIOCFUNCL _IOWR(r, 86, struct ipfunc_resolve) 115# define SIOCIPFGETNEXT _IOWR(r, 87, struct ipfobj) 116# define SIOCIPFGET _IOWR(r, 88, struct ipfobj) 117# define SIOCIPFSET _IOWR(r, 89, struct ipfobj) 118# define SIOCIPFL6 _IOWR(r, 90, int) 119# define SIOCIPFITER _IOWR(r, 91, struct ipfobj) 120# define SIOCGENITER _IOWR(r, 92, struct ipfobj) 121# define SIOCGTABL _IOWR(r, 93, struct ipfobj) 122# define SIOCIPFDELTOK _IOWR(r, 94, int) 123# define SIOCLOOKUPITER _IOWR(r, 95, struct ipfobj) 124# define SIOCGTQTAB _IOWR(r, 96, struct ipfobj) 125# define SIOCMATCHFLUSH _IOWR(r, 97, struct ipfobj) 126# define SIOCIPFINTERROR _IOR(r, 98, int) 127#endif 128#define SIOCADDFR SIOCADAFR 129#define SIOCDELFR SIOCRMAFR 130#define SIOCINSFR SIOCINAFR 131#define SIOCATHST SIOCSTAT1 132#define SIOCGFRST SIOCSTAT2 133 134 135struct ipscan; 136struct ifnet; 137struct ipf_main_softc_s; 138 139typedef int (* lookupfunc_t) __P((struct ipf_main_softc_s *, void *, 140 int, void *, u_int)); 141 142/* 143 * i6addr is used as a container for both IPv4 and IPv6 addresses, as well 144 * as other types of objects, depending on its qualifier. 145 */ 146typedef union i6addr { 147 u_32_t i6[4]; 148 struct in_addr in4; 149#ifdef USE_INET6 150 struct in6_addr in6; 151#endif 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; 160 161#define in4_addr in4.s_addr 162#define iplookupnum i6[1] 163#define iplookupname i6un.name 164#define iplookuptype i6un.type 165#define iplookupsubtype i6un.subtype 166/* 167 * NOTE: These DO overlap the above on 64bit systems and this IS recognised. 168 */ 169#define iplookupptr vptr[0] 170#define iplookupfunc lptr[1] 171 172#define I60(x) (((u_32_t *)(x))[0]) 173#define I61(x) (((u_32_t *)(x))[1]) 174#define I62(x) (((u_32_t *)(x))[2]) 175#define I63(x) (((u_32_t *)(x))[3]) 176#define HI60(x) ntohl(((u_32_t *)(x))[0]) 177#define HI61(x) ntohl(((u_32_t *)(x))[1]) 178#define HI62(x) ntohl(((u_32_t *)(x))[2]) 179#define HI63(x) ntohl(((u_32_t *)(x))[3]) 180 181#define IP6_EQ(a,b) ((I63(a) == I63(b)) && (I62(a) == I62(b)) && \ 182 (I61(a) == I61(b)) && (I60(a) == I60(b))) 183#define IP6_NEQ(a,b) ((I63(a) != I63(b)) || (I62(a) != I62(b)) || \ 184 (I61(a) != I61(b)) || (I60(a) != I60(b))) 185#define IP6_ISZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) == 0) 186#define IP6_NOTZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) != 0) 187#define IP6_ISONES(a) ((I63(a) == 0xffffffff) && (I62(a) == 0xffffffff) && \ 188 (I61(a) == 0xffffffff) && (I60(a) == 0xffffffff)) 189#define IP6_GT(a,b) (ntohl(HI60(a)) > ntohl(HI60(b)) || \ 190 (HI60(a) == HI60(b) && \ 191 (ntohl(HI61(a)) > ntohl(HI61(b)) || \ 192 (HI61(a) == HI61(b) && \ 193 (ntohl(HI62(a)) > ntohl(HI62(b)) || \ 194 (HI62(a) == HI62(b) && \ 195 ntohl(HI63(a)) > ntohl(HI63(b)))))))) 196#define IP6_LT(a,b) (ntohl(HI60(a)) < ntohl(HI60(b)) || \ 197 (HI60(a) == HI60(b) && \ 198 (ntohl(HI61(a)) < ntohl(HI61(b)) || \ 199 (HI61(a) == HI61(b) && \ 200 (ntohl(HI62(a)) < ntohl(HI62(b)) || \ 201 (HI62(a) == HI62(b) && \ 202 ntohl(HI63(a)) < ntohl(HI63(b)))))))) 203#define NLADD(n,x) htonl(ntohl(n) + (x)) 204#define IP6_INC(a) \ 205 do { u_32_t *_i6 = (u_32_t *)(a); \ 206 _i6[3] = NLADD(_i6[3], 1); \ 207 if (_i6[3] == 0) { \ 208 _i6[2] = NLADD(_i6[2], 1); \ 209 if (_i6[2] == 0) { \ 210 _i6[1] = NLADD(_i6[1], 1); \ 211 if (_i6[1] == 0) { \ 212 _i6[0] = NLADD(_i6[0], 1); \ 213 } \ 214 } \ 215 } \ 216 } while (0) 217#define IP6_ADD(a,x,d) \ 218 do { i6addr_t *_s = (i6addr_t *)(a); \ 219 i6addr_t *_d = (i6addr_t *)(d); \ 220 _d->i6[0] = NLADD(_s->i6[0], x); \ 221 if (ntohl(_d->i6[0]) < ntohl(_s->i6[0])) { \ 222 _d->i6[1] = NLADD(_d->i6[1], 1); \ 223 if (ntohl(_d->i6[1]) < ntohl(_s->i6[1])) { \ 224 _d->i6[2] = NLADD(_d->i6[2], 1); \ 225 if (ntohl(_d->i6[2]) < ntohl(_s->i6[2])) { \ 226 _d->i6[3] = NLADD(_d->i6[3], 1); \ 227 } \ 228 } \ 229 } \ 230 } while (0) 231#define IP6_AND(a,b,d) do { i6addr_t *_s1 = (i6addr_t *)(a); \ 232 i6addr_t *_s2 = (i6addr_t *)(b); \ 233 i6addr_t *_d = (i6addr_t *)(d); \ 234 _d->i6[0] = _s1->i6[0] & _s2->i6[0]; \ 235 _d->i6[1] = _s1->i6[1] & _s2->i6[1]; \ 236 _d->i6[2] = _s1->i6[2] & _s2->i6[2]; \ 237 _d->i6[3] = _s1->i6[3] & _s2->i6[3]; \ 238 } while (0) 239#define IP6_ANDASSIGN(a,m) \ 240 do { i6addr_t *_d = (i6addr_t *)(a); \ 241 i6addr_t *_m = (i6addr_t *)(m); \ 242 _d->i6[0] &= _m->i6[0]; \ 243 _d->i6[1] &= _m->i6[1]; \ 244 _d->i6[2] &= _m->i6[2]; \ 245 _d->i6[3] &= _m->i6[3]; \ 246 } while (0) 247#define IP6_MASKEQ(a,m,b) \ 248 (((I60(a) & I60(m)) == I60(b)) && \ 249 ((I61(a) & I61(m)) == I61(b)) && \ 250 ((I62(a) & I62(m)) == I62(b)) && \ 251 ((I63(a) & I63(m)) == I63(b))) 252#define IP6_MASKNEQ(a,m,b) \ 253 (((I60(a) & I60(m)) != I60(b)) || \ 254 ((I61(a) & I61(m)) != I61(b)) || \ 255 ((I62(a) & I62(m)) != I62(b)) || \ 256 ((I63(a) & I63(m)) != I63(b))) 257#define IP6_MERGE(a,b,c) \ 258 do { i6addr_t *_d, *_s1, *_s2; \ 259 _d = (i6addr_t *)(a); \ 260 _s1 = (i6addr_t *)(b); \ 261 _s2 = (i6addr_t *)(c); \ 262 _d->i6[0] |= _s1->i6[0] & ~_s2->i6[0]; \ 263 _d->i6[1] |= _s1->i6[1] & ~_s2->i6[1]; \ 264 _d->i6[2] |= _s1->i6[2] & ~_s2->i6[2]; \ 265 _d->i6[3] |= _s1->i6[3] & ~_s2->i6[3]; \ 266 } while (0) 267#define IP6_MASK(a,b,c) \ 268 do { i6addr_t *_d, *_s1, *_s2; \ 269 _d = (i6addr_t *)(a); \ 270 _s1 = (i6addr_t *)(b); \ 271 _s2 = (i6addr_t *)(c); \ 272 _d->i6[0] = _s1->i6[0] & ~_s2->i6[0]; \ 273 _d->i6[1] = _s1->i6[1] & ~_s2->i6[1]; \ 274 _d->i6[2] = _s1->i6[2] & ~_s2->i6[2]; \ 275 _d->i6[3] = _s1->i6[3] & ~_s2->i6[3]; \ 276 } while (0) 277#define IP6_SETONES(a) \ 278 do { i6addr_t *_d = (i6addr_t *)(a); \ 279 _d->i6[0] = 0xffffffff; \ 280 _d->i6[1] = 0xffffffff; \ 281 _d->i6[2] = 0xffffffff; \ 282 _d->i6[3] = 0xffffffff; \ 283 } while (0) 284 285typedef union ipso_u { 286 u_short ipso_ripso[2]; 287 u_32_t ipso_doi; 288} ipso_t; 289 290typedef struct fr_ip { 291 u_32_t fi_v:4; /* IP version */ 292 u_32_t fi_xx:4; /* spare */ 293 u_32_t fi_tos:8; /* IP packet TOS */ 294 u_32_t fi_ttl:8; /* IP packet TTL */ 295 u_32_t fi_p:8; /* IP packet protocol */ 296 u_32_t fi_optmsk; /* bitmask composed from IP options */ 297 i6addr_t fi_src; /* source address from packet */ 298 i6addr_t fi_dst; /* destination address from packet */ 299 ipso_t fi_ipso; /* IP security options */ 300 u_32_t fi_flx; /* packet flags */ 301 u_32_t fi_tcpmsk; /* TCP options set/reset */ 302 u_32_t fi_ports[2]; /* TCP ports */ 303 u_char fi_tcpf; /* TCP flags */ 304 u_char fi_sensitivity; 305 u_char fi_xxx[2]; /* pad */ 306} fr_ip_t; 307 308/* 309 * For use in fi_flx 310 */ 311#define FI_TCPUDP 0x0001 /* TCP/UCP implied comparison*/ 312#define FI_OPTIONS 0x0002 313#define FI_FRAG 0x0004 314#define FI_SHORT 0x0008 315#define FI_NATED 0x0010 316#define FI_MULTICAST 0x0020 317#define FI_BROADCAST 0x0040 318#define FI_MBCAST 0x0080 319#define FI_STATE 0x0100 320#define FI_BADNAT 0x0200 321#define FI_BAD 0x0400 322#define FI_OOW 0x0800 /* Out of state window, else match */ 323#define FI_ICMPERR 0x1000 324#define FI_FRAGBODY 0x2000 325#define FI_BADSRC 0x4000 326#define FI_LOWTTL 0x8000 327#define FI_CMP 0x5cfe3 /* Not FI_FRAG,FI_NATED,FI_FRAGTAIL */ 328#define FI_ICMPCMP 0x0003 /* Flags we can check for ICMP error packets */ 329#define FI_WITH 0x5effe /* Not FI_TCPUDP */ 330#define FI_V6EXTHDR 0x10000 331#define FI_COALESCE 0x20000 332#define FI_NEWNAT 0x40000 333#define FI_ICMPQUERY 0x80000 334#define FI_ENCAP 0x100000 /* encap/decap with NAT */ 335#define FI_AH 0x200000 /* AH header present */ 336#define FI_DOCKSUM 0x10000000 /* Proxy wants L4 recalculation */ 337#define FI_NOCKSUM 0x20000000 /* don't do a L4 checksum validation */ 338#define FI_NOWILD 0x40000000 /* Do not do wildcard searches */ 339#define FI_IGNORE 0x80000000 340 341#define fi_secmsk fi_ipso.ipso_ripso[0] 342#define fi_auth fi_ipso.ipso_ripso[1] 343#define fi_doi fi_ipso.ipso_doi 344#define fi_saddr fi_src.in4.s_addr 345#define fi_daddr fi_dst.in4.s_addr 346#define fi_srcnum fi_src.iplookupnum 347#define fi_dstnum fi_dst.iplookupnum 348#define fi_srcname fi_src.iplookupname 349#define fi_dstname fi_dst.iplookupname 350#define fi_srctype fi_src.iplookuptype 351#define fi_dsttype fi_dst.iplookuptype 352#define fi_srcsubtype fi_src.iplookupsubtype 353#define fi_dstsubtype fi_dst.iplookupsubtype 354#define fi_srcptr fi_src.iplookupptr 355#define fi_dstptr fi_dst.iplookupptr 356#define fi_srcfunc fi_src.iplookupfunc 357#define fi_dstfunc fi_dst.iplookupfunc 358 359 360/* 361 * These are both used by the state and NAT code to indicate that one port or 362 * the other should be treated as a wildcard. 363 * NOTE: When updating, check bit masks in ip_state.h and update there too. 364 */ 365#define SI_W_SPORT 0x00000100 366#define SI_W_DPORT 0x00000200 367#define SI_WILDP (SI_W_SPORT|SI_W_DPORT) 368#define SI_W_SADDR 0x00000400 369#define SI_W_DADDR 0x00000800 370#define SI_WILDA (SI_W_SADDR|SI_W_DADDR) 371#define SI_NEWFR 0x00001000 372#define SI_CLONE 0x00002000 373#define SI_CLONED 0x00004000 374#define SI_NEWCLONE 0x00008000 375 376typedef struct { 377 u_short fda_ports[2]; 378 u_char fda_tcpf; /* TCP header flags (SYN, ACK, etc) */ 379} frdat_t; 380 381typedef enum fr_breasons_e { 382 FRB_BLOCKED = 0, 383 FRB_LOGFAIL = 1, 384 FRB_PPSRATE = 2, 385 FRB_JUMBO = 3, 386 FRB_MAKEFRIP = 4, 387 FRB_STATEADD = 5, 388 FRB_UPDATEIPID = 6, 389 FRB_LOGFAIL2 = 7, 390 FRB_DECAPFRIP = 8, 391 FRB_AUTHNEW = 9, 392 FRB_AUTHCAPTURE = 10, 393 FRB_COALESCE = 11, 394 FRB_PULLUP = 12, 395 FRB_AUTHFEEDBACK = 13, 396 FRB_BADFRAG = 14, 397 FRB_NATV4 = 15, 398 FRB_NATV6 = 16, 399} fr_breason_t; 400 401#define FRB_MAX_VALUE 16 402 403typedef enum ipf_cksum_e { 404 FI_CK_BAD = -1, 405 FI_CK_NEEDED = 0, 406 FI_CK_SUMOK = 1, 407 FI_CK_L4PART = 2, 408 FI_CK_L4FULL = 4 409} ipf_cksum_t; 410 411typedef struct fr_info { 412 void *fin_main_soft; 413 void *fin_ifp; /* interface packet is `on' */ 414 struct frentry *fin_fr; /* last matching rule */ 415 int fin_out; /* in or out ? 1 == out, 0 == in */ 416 fr_ip_t fin_fi; /* IP Packet summary */ 417 frdat_t fin_dat; /* TCP/UDP ports, ICMP code/type */ 418 int fin_dlen; /* length of data portion of packet */ 419 int fin_plen; 420 u_32_t fin_rule; /* rule # last matched */ 421 u_short fin_hlen; /* length of IP header in bytes */ 422 char fin_group[FR_GROUPLEN]; /* group number, -1 for none */ 423 void *fin_dp; /* start of data past IP header */ 424 /* 425 * Fields after fin_dp aren't used for compression of log records. 426 * fin_fi contains the IP version (fin_family) 427 * fin_rule isn't included because adding a new rule can change it but 428 * not change fin_fr. fin_rule is the rule number reported. 429 * It isn't necessary to include fin_crc because that is checked 430 * for explicitly, before calling bcmp. 431 */ 432 u_32_t fin_crc; /* Simple calculation for logging */ 433 int fin_family; /* AF_INET, etc. */ 434 int fin_icode; /* ICMP error to return */ 435 int fin_mtu; /* MTU input for ICMP need-frag */ 436 int fin_rev; /* state only: 1 = reverse */ 437 int fin_ipoff; /* # bytes from buffer start to hdr */ 438 u_32_t fin_id; /* IP packet id field */ 439 u_short fin_l4hlen; /* length of L4 header, if known */ 440 u_short fin_off; 441 int fin_depth; /* Group nesting depth */ 442 int fin_error; /* Error code to return */ 443 ipf_cksum_t fin_cksum; /* -1 = bad, 1 = good, 0 = not done */ 444 fr_breason_t fin_reason; /* why auto blocked */ 445 u_int fin_pktnum; 446 void *fin_nattag; 447 struct frdest *fin_dif; 448 struct frdest *fin_tif; 449 union { 450 ip_t *fip_ip; 451#ifdef USE_INET6 452 ip6_t *fip_ip6; 453#endif 454 } fin_ipu; 455 mb_t **fin_mp; /* pointer to pointer to mbuf */ 456 mb_t *fin_m; /* pointer to mbuf */ 457#ifdef MENTAT 458 mb_t *fin_qfm; /* pointer to mblk where pkt starts */ 459 void *fin_qpi; 460 char fin_ifname[LIFNAMSIZ]; 461#endif 462#ifdef __sgi 463 void *fin_hbuf; 464#endif 465 void *fin_fraghdr; /* pointer to start of ipv6 frag hdr */ 466} fr_info_t; 467 468#define fin_ip fin_ipu.fip_ip 469#define fin_ip6 fin_ipu.fip_ip6 470#define fin_v fin_fi.fi_v 471#define fin_p fin_fi.fi_p 472#define fin_flx fin_fi.fi_flx 473#define fin_optmsk fin_fi.fi_optmsk 474#define fin_secmsk fin_fi.fi_secmsk 475#define fin_doi fin_fi.fi_doi 476#define fin_auth fin_fi.fi_auth 477#define fin_src fin_fi.fi_src.in4 478#define fin_saddr fin_fi.fi_saddr 479#define fin_dst fin_fi.fi_dst.in4 480#define fin_daddr fin_fi.fi_daddr 481#define fin_data fin_fi.fi_ports 482#define fin_sport fin_fi.fi_ports[0] 483#define fin_dport fin_fi.fi_ports[1] 484#define fin_tcpf fin_fi.fi_tcpf 485#define fin_src6 fin_fi.fi_src 486#define fin_dst6 fin_fi.fi_dst 487#define fin_srcip6 fin_fi.fi_src.in6 488#define fin_dstip6 fin_fi.fi_dst.in6 489 490#define IPF_IN 0 491#define IPF_OUT 1 492 493typedef struct frentry *(*ipfunc_t) __P((fr_info_t *, u_32_t *)); 494typedef int (*ipfuncinit_t) __P((struct ipf_main_softc_s *, struct frentry *)); 495 496typedef struct ipfunc_resolve { 497 char ipfu_name[32]; 498 ipfunc_t ipfu_addr; 499 ipfuncinit_t ipfu_init; 500 ipfuncinit_t ipfu_fini; 501} ipfunc_resolve_t; 502 503/* 504 * Size for compares on fr_info structures 505 */ 506#define FI_CSIZE offsetof(fr_info_t, fin_icode) 507#define FI_LCSIZE offsetof(fr_info_t, fin_dp) 508 509/* 510 * Size for copying cache fr_info structure 511 */ 512#define FI_COPYSIZE offsetof(fr_info_t, fin_dp) 513 514/* 515 * Structure for holding IPFilter's tag information 516 */ 517#define IPFTAG_LEN 16 518typedef struct { 519 union { 520 u_32_t iptu_num[4]; 521 char iptu_tag[IPFTAG_LEN]; 522 } ipt_un; 523 int ipt_not; 524} ipftag_t; 525 526#define ipt_tag ipt_un.iptu_tag 527#define ipt_num ipt_un.iptu_num 528 529/* 530 * Structure to define address for pool lookups. 531 */ 532typedef struct { 533 u_char adf_len; 534 sa_family_t adf_family; 535 u_char adf_xxx[2]; 536 i6addr_t adf_addr; 537} addrfamily_t; 538 539 540RBI_LINK(ipf_rb, host_node_s); 541 542typedef struct host_node_s { 543 RBI_FIELD(ipf_rb) hn_entry; 544 addrfamily_t hn_addr; 545 int hn_active; 546} host_node_t; 547 548typedef RBI_HEAD(ipf_rb, host_node_s) ipf_rb_head_t; 549 550typedef struct host_track_s { 551 ipf_rb_head_t ht_root; 552 int ht_max_nodes; 553 int ht_max_per_node; 554 int ht_netmask; 555 int ht_cur_nodes; 556} host_track_t; 557 558 559typedef enum fr_dtypes_e { 560 FRD_NORMAL = 0, 561 FRD_DSTLIST 562} fr_dtypes_t; 563/* 564 * This structure is used to hold information about the next hop for where 565 * to forward a packet. 566 */ 567typedef struct frdest { 568 void *fd_ptr; 569 addrfamily_t fd_addr; 570 fr_dtypes_t fd_type; 571 int fd_name; 572 int fd_local; 573} frdest_t; 574 575#define fd_ip6 fd_addr.adf_addr 576#define fd_ip fd_ip6.in4 577 578 579typedef enum fr_ctypes_e { 580 FR_NONE = 0, 581 FR_EQUAL, 582 FR_NEQUAL, 583 FR_LESST, 584 FR_GREATERT, 585 FR_LESSTE, 586 FR_GREATERTE, 587 FR_OUTRANGE, 588 FR_INRANGE, 589 FR_INCRANGE 590} fr_ctypes_t; 591 592/* 593 * This structure holds information about a port comparison. 594 */ 595typedef struct frpcmp { 596 fr_ctypes_t frp_cmp; /* data for port comparisons */ 597 u_32_t frp_port; /* top port for <> and >< */ 598 u_32_t frp_top; /* top port for <> and >< */ 599} frpcmp_t; 600 601 602/* 603 * Structure containing all the relevant TCP things that can be checked in 604 * a filter rule. 605 */ 606typedef struct frtuc { 607 u_char ftu_tcpfm; /* tcp flags mask */ 608 u_char ftu_tcpf; /* tcp flags */ 609 frpcmp_t ftu_src; 610 frpcmp_t ftu_dst; 611} frtuc_t; 612 613#define ftu_scmp ftu_src.frp_cmp 614#define ftu_dcmp ftu_dst.frp_cmp 615#define ftu_sport ftu_src.frp_port 616#define ftu_dport ftu_dst.frp_port 617#define ftu_stop ftu_src.frp_top 618#define ftu_dtop ftu_dst.frp_top 619 620#define FR_TCPFMAX 0x3f 621 622typedef enum fr_atypes_e { 623 FRI_NONE = -1, /* For LHS of NAT */ 624 FRI_NORMAL = 0, /* Normal address */ 625 FRI_DYNAMIC, /* dynamic address */ 626 FRI_LOOKUP, /* address is a pool # */ 627 FRI_RANGE, /* address/mask is a range */ 628 FRI_NETWORK, /* network address from if */ 629 FRI_BROADCAST, /* broadcast address from if */ 630 FRI_PEERADDR, /* Peer address for P-to-P */ 631 FRI_NETMASKED, /* network address with netmask from if */ 632 FRI_SPLIT, /* For NAT compatibility */ 633 FRI_INTERFACE /* address is based on interface name */ 634} fr_atypes_t; 635 636/* 637 * This structure makes up what is considered to be the IPFilter specific 638 * matching components of a filter rule, as opposed to the data structures 639 * used to define the result which are in frentry_t and not here. 640 */ 641typedef struct fripf { 642 fr_ip_t fri_ip; 643 fr_ip_t fri_mip; /* mask structure */ 644 645 u_short fri_icmpm; /* data for ICMP packets (mask) */ 646 u_short fri_icmp; 647 648 frtuc_t fri_tuc; 649 fr_atypes_t fri_satype; /* addres type */ 650 fr_atypes_t fri_datype; /* addres type */ 651 int fri_sifpidx; /* doing dynamic addressing */ 652 int fri_difpidx; /* index into fr_ifps[] to use when */ 653} fripf_t; 654 655#define fri_dlookup fri_mip.fi_dst 656#define fri_slookup fri_mip.fi_src 657#define fri_dstnum fri_mip.fi_dstnum 658#define fri_srcnum fri_mip.fi_srcnum 659#define fri_dstname fri_mip.fi_dstname 660#define fri_srcname fri_mip.fi_srcname 661#define fri_dstptr fri_mip.fi_dstptr 662#define fri_srcptr fri_mip.fi_srcptr 663 664 665typedef enum fr_rtypes_e { 666 FR_T_NONE = 0, 667 FR_T_IPF, /* IPF structures */ 668 FR_T_BPFOPC, /* BPF opcode */ 669 FR_T_CALLFUNC, /* callout to function in fr_func only */ 670 FR_T_COMPIPF, /* compiled C code */ 671 FR_T_IPFEXPR, /* IPF expression */ 672 FR_T_BUILTIN = 0x40000000, /* rule is in kernel space */ 673 FR_T_IPF_BUILTIN, 674 FR_T_BPFOPC_BUILTIN, 675 FR_T_CALLFUNC_BUILTIN, 676 FR_T_COMPIPF_BUILTIN, 677 FR_T_IPFEXPR_BUILTIN 678} fr_rtypes_t; 679 680typedef struct frentry * (* frentfunc_t) __P((fr_info_t *)); 681 682typedef struct frentry { 683 ipfmutex_t fr_lock; 684 struct frentry *fr_next; 685 struct frentry **fr_pnext; 686 struct frgroup *fr_grp; 687 struct frgroup *fr_grphead; 688 struct frgroup *fr_icmpgrp; 689 struct ipscan *fr_isc; 690 struct frentry *fr_dnext; /* 2 fr_die linked list pointers */ 691 struct frentry **fr_pdnext; 692 void *fr_ifas[4]; 693 void *fr_ptr; /* for use with fr_arg */ 694 int fr_comment; /* text comment for rule */ 695 int fr_size; /* size of this structure */ 696 int fr_ref; /* reference count */ 697 int fr_statecnt; /* state count - for limit rules */ 698 u_32_t fr_die; /* only used on loading the rule */ 699 u_int fr_cksum; /* checksum on filter rules for performance */ 700 /* 701 * The line number from a file is here because we need to be able to 702 * match the rule generated with ``grep rule ipf.conf | ipf -rf -'' 703 * with the rule loaded using ``ipf -f ipf.conf'' - thus it can't be 704 * on the other side of fr_func. 705 */ 706 int fr_flineno; /* line number from conf file */ 707 /* 708 * These are only incremented when a packet matches this rule and 709 * it is the last match 710 */ 711 U_QUAD_T fr_hits; 712 U_QUAD_T fr_bytes; 713 714 /* 715 * For PPS rate limiting 716 * fr_lpu is used to always have the same size for this field, 717 * allocating 64bits for seconds and 32bits for milliseconds. 718 */ 719 union { 720 struct timeval frp_lastpkt; 721 char frp_bytes[12]; 722 } fr_lpu; 723 int fr_curpps; 724 725 union { 726 void *fru_data; 727 char *fru_caddr; 728 fripf_t *fru_ipf; 729 frentfunc_t fru_func; 730 } fr_dun; 731 732 /* 733 * Fields after this may not change whilst in the kernel. 734 */ 735 ipfunc_t fr_func; /* call this function */ 736 int fr_dsize; 737 int fr_pps; 738 fr_rtypes_t fr_type; 739 u_32_t fr_flags; /* per-rule flags && options (see below) */ 740 u_32_t fr_logtag; /* user defined log tag # */ 741 u_32_t fr_collect; /* collection number */ 742 u_int fr_arg; /* misc. numeric arg for rule */ 743 u_int fr_loglevel; /* syslog log facility + priority */ 744 u_char fr_family; 745 u_char fr_icode; /* return ICMP code */ 746 int fr_group; /* group to which this rule belongs */ 747 int fr_grhead; /* group # which this rule starts */ 748 int fr_ifnames[4]; 749 int fr_isctag; 750 int fr_rpc; /* XID Filtering */ 751 ipftag_t fr_nattag; 752 frdest_t fr_tifs[2]; /* "to"/"reply-to" interface */ 753 frdest_t fr_dif; /* duplicate packet interface */ 754 /* 755 * These are all options related to stateful filtering 756 */ 757 host_track_t fr_srctrack; 758 int fr_nostatelog; 759 int fr_statemax; /* max reference count */ 760 int fr_icmphead; /* ICMP group for state options */ 761 u_int fr_age[2]; /* non-TCP state timeouts */ 762 /* 763 * How big is the name buffer at the end? 764 */ 765 int fr_namelen; 766 char fr_names[1]; 767} frentry_t; 768 769#define fr_lastpkt fr_lpu.frp_lastpkt 770#define fr_caddr fr_dun.fru_caddr 771#define fr_data fr_dun.fru_data 772#define fr_dfunc fr_dun.fru_func 773#define fr_ipf fr_dun.fru_ipf 774#define fr_ip fr_ipf->fri_ip 775#define fr_mip fr_ipf->fri_mip 776#define fr_icmpm fr_ipf->fri_icmpm 777#define fr_icmp fr_ipf->fri_icmp 778#define fr_tuc fr_ipf->fri_tuc 779#define fr_satype fr_ipf->fri_satype 780#define fr_datype fr_ipf->fri_datype 781#define fr_sifpidx fr_ipf->fri_sifpidx 782#define fr_difpidx fr_ipf->fri_difpidx 783#define fr_proto fr_ip.fi_p 784#define fr_mproto fr_mip.fi_p 785#define fr_ttl fr_ip.fi_ttl 786#define fr_mttl fr_mip.fi_ttl 787#define fr_tos fr_ip.fi_tos 788#define fr_mtos fr_mip.fi_tos 789#define fr_tcpfm fr_tuc.ftu_tcpfm 790#define fr_tcpf fr_tuc.ftu_tcpf 791#define fr_scmp fr_tuc.ftu_scmp 792#define fr_dcmp fr_tuc.ftu_dcmp 793#define fr_dport fr_tuc.ftu_dport 794#define fr_sport fr_tuc.ftu_sport 795#define fr_stop fr_tuc.ftu_stop 796#define fr_dtop fr_tuc.ftu_dtop 797#define fr_dst fr_ip.fi_dst.in4 798#define fr_dst6 fr_ip.fi_dst 799#define fr_daddr fr_ip.fi_dst.in4.s_addr 800#define fr_src fr_ip.fi_src.in4 801#define fr_src6 fr_ip.fi_src 802#define fr_saddr fr_ip.fi_src.in4.s_addr 803#define fr_dmsk fr_mip.fi_dst.in4 804#define fr_dmsk6 fr_mip.fi_dst 805#define fr_dmask fr_mip.fi_dst.in4.s_addr 806#define fr_smsk fr_mip.fi_src.in4 807#define fr_smsk6 fr_mip.fi_src 808#define fr_smask fr_mip.fi_src.in4.s_addr 809#define fr_dstnum fr_ip.fi_dstnum 810#define fr_srcnum fr_ip.fi_srcnum 811#define fr_dlookup fr_ip.fi_dst 812#define fr_slookup fr_ip.fi_src 813#define fr_dstname fr_ip.fi_dstname 814#define fr_srcname fr_ip.fi_srcname 815#define fr_dsttype fr_ip.fi_dsttype 816#define fr_srctype fr_ip.fi_srctype 817#define fr_dstsubtype fr_ip.fi_dstsubtype 818#define fr_srcsubtype fr_ip.fi_srcsubtype 819#define fr_dstptr fr_mip.fi_dstptr 820#define fr_srcptr fr_mip.fi_srcptr 821#define fr_dstfunc fr_mip.fi_dstfunc 822#define fr_srcfunc fr_mip.fi_srcfunc 823#define fr_optbits fr_ip.fi_optmsk 824#define fr_optmask fr_mip.fi_optmsk 825#define fr_secbits fr_ip.fi_secmsk 826#define fr_secmask fr_mip.fi_secmsk 827#define fr_authbits fr_ip.fi_auth 828#define fr_authmask fr_mip.fi_auth 829#define fr_doi fr_ip.fi_doi 830#define fr_doimask fr_mip.fi_doi 831#define fr_flx fr_ip.fi_flx 832#define fr_mflx fr_mip.fi_flx 833#define fr_ifa fr_ifas[0] 834#define fr_oifa fr_ifas[2] 835#define fr_tif fr_tifs[0] 836#define fr_rif fr_tifs[1] 837 838#define FR_NOLOGTAG 0 839 840#define FR_CMPSIZ (sizeof(struct frentry) - \ 841 offsetof(struct frentry, fr_func)) 842#define FR_NAME(_f, _n) (_f)->fr_names + (_f)->_n 843 844 845/* 846 * fr_flags 847 */ 848#define FR_BLOCK 0x00001 /* do not allow packet to pass */ 849#define FR_PASS 0x00002 /* allow packet to pass */ 850#define FR_AUTH 0x00003 /* use authentication */ 851#define FR_PREAUTH 0x00004 /* require preauthentication */ 852#define FR_ACCOUNT 0x00005 /* Accounting rule */ 853#define FR_SKIP 0x00006 /* skip rule */ 854#define FR_DECAPSULATE 0x00008 /* decapsulate rule */ 855#define FR_CALL 0x00009 /* call rule */ 856#define FR_CMDMASK 0x0000f 857#define FR_LOG 0x00010 /* Log */ 858#define FR_LOGB 0x00011 /* Log-fail */ 859#define FR_LOGP 0x00012 /* Log-pass */ 860#define FR_LOGMASK (FR_LOG|FR_CMDMASK) 861#define FR_CALLNOW 0x00020 /* call another function (fr_func) if matches */ 862#define FR_NOTSRCIP 0x00040 863#define FR_NOTDSTIP 0x00080 864#define FR_QUICK 0x00100 /* match & stop processing list */ 865#define FR_KEEPFRAG 0x00200 /* keep fragment information */ 866#define FR_KEEPSTATE 0x00400 /* keep `connection' state information */ 867#define FR_FASTROUTE 0x00800 /* bypass normal routing */ 868#define FR_RETRST 0x01000 /* Return TCP RST packet - reset connection */ 869#define FR_RETICMP 0x02000 /* Return ICMP unreachable packet */ 870#define FR_FAKEICMP 0x03000 /* Return ICMP unreachable with fake source */ 871#define FR_OUTQUE 0x04000 /* outgoing packets */ 872#define FR_INQUE 0x08000 /* ingoing packets */ 873#define FR_LOGBODY 0x10000 /* Log the body */ 874#define FR_LOGFIRST 0x20000 /* Log the first byte if state held */ 875#define FR_LOGORBLOCK 0x40000 /* block the packet if it can't be logged */ 876#define FR_STLOOSE 0x80000 /* loose state checking */ 877#define FR_FRSTRICT 0x100000 /* strict frag. cache */ 878#define FR_STSTRICT 0x200000 /* strict keep state */ 879#define FR_NEWISN 0x400000 /* new ISN for outgoing TCP */ 880#define FR_NOICMPERR 0x800000 /* do not match ICMP errors in state */ 881#define FR_STATESYNC 0x1000000 /* synchronize state to slave */ 882#define FR_COPIED 0x2000000 /* copied from user space */ 883#define FR_INACTIVE 0x4000000 /* only used when flush'ing rules */ 884#define FR_NOMATCH 0x8000000 /* no match occured */ 885 /* 0x10000000 FF_LOGPASS */ 886 /* 0x20000000 FF_LOGBLOCK */ 887 /* 0x40000000 FF_LOGNOMATCH */ 888 /* 0x80000000 FF_BLOCKNONIP */ 889 890#define FR_RETMASK (FR_RETICMP|FR_RETRST|FR_FAKEICMP) 891#define FR_ISBLOCK(x) (((x) & FR_CMDMASK) == FR_BLOCK) 892#define FR_ISPASS(x) (((x) & FR_CMDMASK) == FR_PASS) 893#define FR_ISAUTH(x) (((x) & FR_CMDMASK) == FR_AUTH) 894#define FR_ISPREAUTH(x) (((x) & FR_CMDMASK) == FR_PREAUTH) 895#define FR_ISACCOUNT(x) (((x) & FR_CMDMASK) == FR_ACCOUNT) 896#define FR_ISSKIP(x) (((x) & FR_CMDMASK) == FR_SKIP) 897#define FR_ISDECAPS(x) (((x) & FR_CMDMASK) == FR_DECAPSULATE) 898#define FR_ISNOMATCH(x) ((x) & FR_NOMATCH) 899#define FR_INOUT (FR_INQUE|FR_OUTQUE) 900 901/* 902 * recognized flags for SIOCGETFF and SIOCSETFF, and get put in fr_flags 903 */ 904#define FF_LOGPASS 0x10000000 905#define FF_LOGBLOCK 0x20000000 906#define FF_LOGNOMATCH 0x40000000 907#define FF_LOGGING (FF_LOGPASS|FF_LOGBLOCK|FF_LOGNOMATCH) 908#define FF_BLOCKNONIP 0x80000000 /* Solaris2 Only */ 909 910 911/* 912 * Structure that passes information on what/how to flush to the kernel. 913 */ 914typedef struct ipfflush { 915 int ipflu_how; 916 int ipflu_arg; 917} ipfflush_t; 918 919 920/* 921 * 922 */ 923typedef struct ipfgetctl { 924 u_int ipfg_min; /* min value */ 925 u_int ipfg_current; /* current value */ 926 u_int ipfg_max; /* max value */ 927 u_int ipfg_default; /* default value */ 928 u_int ipfg_steps; /* value increments */ 929 char ipfg_name[40]; /* tag name for this control */ 930} ipfgetctl_t; 931 932typedef struct ipfsetctl { 933 int ipfs_which; /* 0 = min 1 = current 2 = max 3 = default */ 934 u_int ipfs_value; /* min value */ 935 char ipfs_name[40]; /* tag name for this control */ 936} ipfsetctl_t; 937 938 939/* 940 * Some of the statistics below are in their own counters, but most are kept 941 * in this single structure so that they can all easily be collected and 942 * copied back as required. 943 */ 944typedef struct ipf_statistics { 945 u_long fr_icmp_coalesce; 946 u_long fr_tcp_frag; 947 u_long fr_tcp_pullup; 948 u_long fr_tcp_short; 949 u_long fr_tcp_small; 950 u_long fr_tcp_bad_flags; 951 u_long fr_udp_pullup; 952 u_long fr_ip_freed; 953 u_long fr_v6_ah_bad; 954 u_long fr_v6_bad; 955 u_long fr_v6_badfrag; 956 u_long fr_v6_dst_bad; 957 u_long fr_v6_esp_pullup; 958 u_long fr_v6_ext_short; 959 u_long fr_v6_ext_pullup; 960 u_long fr_v6_ext_hlen; 961 u_long fr_v6_frag_bad; 962 u_long fr_v6_frag_pullup; 963 u_long fr_v6_frag_size; 964 u_long fr_v6_gre_pullup; 965 u_long fr_v6_icmp6_pullup; 966 u_long fr_v6_rh_bad; 967 u_long fr_v6_badttl; /* TTL in packet doesn't reach minimum */ 968 u_long fr_v4_ah_bad; 969 u_long fr_v4_ah_pullup; 970 u_long fr_v4_esp_pullup; 971 u_long fr_v4_cipso_bad; 972 u_long fr_v4_cipso_tlen; 973 u_long fr_v4_gre_frag; 974 u_long fr_v4_gre_pullup; 975 u_long fr_v4_icmp_frag; 976 u_long fr_v4_icmp_pullup; 977 u_long fr_v4_badttl; /* TTL in packet doesn't reach minimum */ 978 u_long fr_v4_badsrc; /* source received doesn't match route */ 979 u_long fr_l4_badcksum; /* layer 4 header checksum failure */ 980 u_long fr_badcoalesces; 981 u_long fr_pass; /* packets allowed */ 982 u_long fr_block; /* packets denied */ 983 u_long fr_nom; /* packets which don't match any rule */ 984 u_long fr_short; /* packets which are short */ 985 u_long fr_ppkl; /* packets allowed and logged */ 986 u_long fr_bpkl; /* packets denied and logged */ 987 u_long fr_npkl; /* packets unmatched and logged */ 988 u_long fr_ret; /* packets for which a return is sent */ 989 u_long fr_acct; /* packets for which counting was performed */ 990 u_long fr_bnfr; /* bad attempts to allocate fragment state */ 991 u_long fr_nfr; /* new fragment state kept */ 992 u_long fr_cfr; /* add new fragment state but complete pkt */ 993 u_long fr_bads; /* bad attempts to allocate packet state */ 994 u_long fr_ads; /* new packet state kept */ 995 u_long fr_chit; /* cached hit */ 996 u_long fr_cmiss; /* cached miss */ 997 u_long fr_tcpbad; /* TCP checksum check failures */ 998 u_long fr_pull[2]; /* good and bad pullup attempts */ 999 u_long fr_bad; /* bad IP packets to the filter */ 1000 u_long fr_ipv6; /* IPv6 packets in/out */ 1001 u_long fr_ppshit; /* dropped because of pps ceiling */ 1002 u_long fr_ipud; /* IP id update failures */ 1003 u_long fr_blocked[FRB_MAX_VALUE + 1]; 1004} ipf_statistics_t; 1005 1006/* 1007 * Log structure. Each packet header logged is prepended by one of these. 1008 * Following this in the log records read from the device will be an ipflog 1009 * structure which is then followed by any packet data. 1010 */ 1011typedef struct iplog { 1012 u_32_t ipl_magic; 1013 u_int ipl_count; 1014 u_32_t ipl_seqnum; 1015 struct timeval ipl_time; 1016 size_t ipl_dsize; 1017 struct iplog *ipl_next; 1018} iplog_t; 1019 1020#define ipl_sec ipl_time.tv_sec 1021#define ipl_usec ipl_time.tv_usec 1022 1023#define IPL_MAGIC 0x49504c4d /* 'IPLM' */ 1024#define IPL_MAGIC_NAT 0x49504c4e /* 'IPLN' */ 1025#define IPL_MAGIC_STATE 0x49504c53 /* 'IPLS' */ 1026#define IPLOG_SIZE sizeof(iplog_t) 1027 1028typedef struct ipflog { 1029 u_int fl_unit; 1030 u_32_t fl_rule; 1031 u_32_t fl_flags; 1032 u_32_t fl_lflags; 1033 u_32_t fl_logtag; 1034 ipftag_t fl_nattag; 1035 u_short fl_plen; /* extra data after hlen */ 1036 u_short fl_loglevel; /* syslog log level */ 1037 char fl_group[FR_GROUPLEN]; 1038 u_char fl_hlen; /* length of IP headers saved */ 1039 u_char fl_dir; 1040 u_char fl_breason; /* from fin_reason */ 1041 u_char fl_family; /* address family of packet logged */ 1042 char fl_ifname[LIFNAMSIZ]; 1043} ipflog_t; 1044 1045#ifndef IPF_LOGGING 1046# define IPF_LOGGING 0 1047#endif 1048#ifndef IPF_DEFAULT_PASS 1049# define IPF_DEFAULT_PASS FR_PASS 1050#endif 1051 1052#define DEFAULT_IPFLOGSIZE 32768 1053#ifndef IPFILTER_LOGSIZE 1054# define IPFILTER_LOGSIZE DEFAULT_IPFLOGSIZE 1055#else 1056# if IPFILTER_LOGSIZE < 8192 1057# error IPFILTER_LOGSIZE too small. Must be >= 8192 1058# endif 1059#endif 1060 1061#define IPF_OPTCOPY 0x07ff00 /* bit mask of copied options */ 1062 1063/* 1064 * Device filenames for reading log information. Use ipf on Solaris2 because 1065 * ipl is already a name used by something else. 1066 */ 1067#ifndef IPL_NAME 1068# if SOLARIS 1069# define IPL_NAME "/dev/ipf" 1070# else 1071# define IPL_NAME "/dev/ipl" 1072# endif 1073#endif 1074/* 1075 * Pathnames for various IP Filter control devices. Used by LKM 1076 * and userland, so defined here. 1077 */ 1078#define IPNAT_NAME "/dev/ipnat" 1079#define IPSTATE_NAME "/dev/ipstate" 1080#define IPAUTH_NAME "/dev/ipauth" 1081#define IPSYNC_NAME "/dev/ipsync" 1082#define IPSCAN_NAME "/dev/ipscan" 1083#define IPLOOKUP_NAME "/dev/iplookup" 1084 1085#define IPL_LOGIPF 0 /* Minor device #'s for accessing logs */ 1086#define IPL_LOGNAT 1 1087#define IPL_LOGSTATE 2 1088#define IPL_LOGAUTH 3 1089#define IPL_LOGSYNC 4 1090#define IPL_LOGSCAN 5 1091#define IPL_LOGLOOKUP 6 1092#define IPL_LOGCOUNT 7 1093#define IPL_LOGMAX 7 1094#define IPL_LOGSIZE IPL_LOGMAX + 1 1095#define IPL_LOGALL -1 1096#define IPL_LOGNONE -2 1097 1098/* 1099 * For SIOCGETFS 1100 */ 1101typedef struct friostat { 1102 ipf_statistics_t f_st[2]; 1103 frentry_t *f_ipf[2][2]; 1104 frentry_t *f_acct[2][2]; 1105 frentry_t *f_auth; 1106 struct frgroup *f_groups[IPL_LOGSIZE][2]; 1107 u_long f_froute[2]; 1108 u_long f_log_ok; 1109 u_long f_log_fail; 1110 u_long f_rb_no_mem; 1111 u_long f_rb_node_max; 1112 u_32_t f_ticks; 1113 int f_locks[IPL_LOGSIZE]; 1114 int f_defpass; /* default pass - from fr_pass */ 1115 int f_active; /* 1 or 0 - active rule set */ 1116 int f_running; /* 1 if running, else 0 */ 1117 int f_logging; /* 1 if enabled, else 0 */ 1118 int f_features; 1119 char f_version[32]; /* version string */ 1120} friostat_t; 1121 1122#define f_fin f_ipf[0] 1123#define f_fout f_ipf[1] 1124#define f_acctin f_acct[0] 1125#define f_acctout f_acct[1] 1126 1127#define IPF_FEAT_LKM 0x001 1128#define IPF_FEAT_LOG 0x002 1129#define IPF_FEAT_LOOKUP 0x004 1130#define IPF_FEAT_BPF 0x008 1131#define IPF_FEAT_COMPILED 0x010 1132#define IPF_FEAT_CKSUM 0x020 1133#define IPF_FEAT_SYNC 0x040 1134#define IPF_FEAT_SCAN 0x080 1135#define IPF_FEAT_IPV6 0x100 1136 1137typedef struct optlist { 1138 u_short ol_val; 1139 int ol_bit; 1140} optlist_t; 1141 1142 1143/* 1144 * Group list structure. 1145 */ 1146typedef struct frgroup { 1147 struct frgroup *fg_next; 1148 struct frentry *fg_head; 1149 struct frentry *fg_start; 1150 struct frgroup **fg_set; 1151 u_32_t fg_flags; 1152 int fg_ref; 1153 char fg_name[FR_GROUPLEN]; 1154} frgroup_t; 1155 1156#define FG_NAME(g) (*(g)->fg_name == '\0' ? "" : (g)->fg_name) 1157 1158 1159/* 1160 * Used by state and NAT tables 1161 */ 1162typedef struct icmpinfo { 1163 u_short ici_id; 1164 u_short ici_seq; 1165 u_char ici_type; 1166} icmpinfo_t; 1167 1168typedef struct udpinfo { 1169 u_short us_sport; 1170 u_short us_dport; 1171} udpinfo_t; 1172 1173 1174typedef struct tcpdata { 1175 u_32_t td_end; 1176 u_32_t td_maxend; 1177 u_32_t td_maxwin; 1178 u_32_t td_winscale; 1179 u_32_t td_maxseg; 1180 int td_winflags; 1181} tcpdata_t; 1182 1183#define TCP_WSCALE_MAX 14 1184 1185#define TCP_WSCALE_SEEN 0x00000001 1186#define TCP_WSCALE_FIRST 0x00000002 1187#define TCP_SACK_PERMIT 0x00000004 1188 1189 1190typedef struct tcpinfo { 1191 u_32_t ts_sport; 1192 u_32_t ts_dport; 1193 tcpdata_t ts_data[2]; 1194} tcpinfo_t; 1195 1196 1197/* 1198 * Structures to define a GRE header as seen in a packet. 1199 */ 1200struct grebits { 1201#if defined(sparc) 1202 u_32_t grb_ver:3; 1203 u_32_t grb_flags:3; 1204 u_32_t grb_A:1; 1205 u_32_t grb_recur:1; 1206 u_32_t grb_s:1; 1207 u_32_t grb_S:1; 1208 u_32_t grb_K:1; 1209 u_32_t grb_R:1; 1210 u_32_t grb_C:1; 1211#else 1212 u_32_t grb_C:1; 1213 u_32_t grb_R:1; 1214 u_32_t grb_K:1; 1215 u_32_t grb_S:1; 1216 u_32_t grb_s:1; 1217 u_32_t grb_recur:1; 1218 u_32_t grb_A:1; 1219 u_32_t grb_flags:3; 1220 u_32_t grb_ver:3; 1221#endif 1222 u_short grb_ptype; 1223}; 1224 1225typedef struct grehdr { 1226 union { 1227 struct grebits gru_bits; 1228 u_short gru_flags; 1229 } gr_un; 1230 u_short gr_len; 1231 u_short gr_call; 1232} grehdr_t; 1233 1234#define gr_flags gr_un.gru_flags 1235#define gr_bits gr_un.gru_bits 1236#define gr_ptype gr_bits.grb_ptype 1237#define gr_C gr_bits.grb_C 1238#define gr_R gr_bits.grb_R 1239#define gr_K gr_bits.grb_K 1240#define gr_S gr_bits.grb_S 1241#define gr_s gr_bits.grb_s 1242#define gr_recur gr_bits.grb_recur 1243#define gr_A gr_bits.grb_A 1244#define gr_ver gr_bits.grb_ver 1245 1246/* 1247 * GRE information tracked by "keep state" 1248 */ 1249typedef struct greinfo { 1250 u_short gs_call[2]; 1251 u_short gs_flags; 1252 u_short gs_ptype; 1253} greinfo_t; 1254 1255#define GRE_REV(x) ((ntohs(x) >> 13) & 7) 1256 1257 1258/* 1259 * Format of an Authentication header 1260 */ 1261typedef struct authhdr { 1262 u_char ah_next; 1263 u_char ah_plen; 1264 u_short ah_reserved; 1265 u_32_t ah_spi; 1266 u_32_t ah_seq; 1267 /* Following the sequence number field is 0 or more bytes of */ 1268 /* authentication data, as specified by ah_plen - RFC 2402. */ 1269} authhdr_t; 1270 1271 1272/* 1273 * Timeout tail queue list member 1274 */ 1275typedef struct ipftqent { 1276 struct ipftqent **tqe_pnext; 1277 struct ipftqent *tqe_next; 1278 struct ipftq *tqe_ifq; 1279 void *tqe_parent; /* pointer back to NAT/state struct */ 1280 u_32_t tqe_die; /* when this entriy is to die */ 1281 u_32_t tqe_touched; 1282 int tqe_flags; 1283 int tqe_state[2]; /* current state of this entry */ 1284} ipftqent_t; 1285 1286#define TQE_RULEBASED 0x00000001 1287#define TQE_DELETE 0x00000002 1288 1289 1290/* 1291 * Timeout tail queue head for IPFilter 1292 */ 1293typedef struct ipftq { 1294 ipfmutex_t ifq_lock; 1295 u_int ifq_ttl; 1296 ipftqent_t *ifq_head; 1297 ipftqent_t **ifq_tail; 1298 struct ipftq *ifq_next; 1299 struct ipftq **ifq_pnext; 1300 int ifq_ref; 1301 u_int ifq_flags; 1302} ipftq_t; 1303 1304#define IFQF_USER 0x01 /* User defined aging */ 1305#define IFQF_DELETE 0x02 /* Marked for deletion */ 1306#define IFQF_PROXY 0x04 /* Timeout queue in use by a proxy */ 1307 1308#define IPFTQ_INIT(x,y,z) do { \ 1309 (x)->ifq_ttl = (y); \ 1310 (x)->ifq_head = NULL; \ 1311 (x)->ifq_ref = 1; \ 1312 (x)->ifq_tail = &(x)->ifq_head; \ 1313 MUTEX_INIT(&(x)->ifq_lock, (z)); \ 1314 } while (0) 1315 1316#define IPF_HZ_MULT 1 1317#define IPF_HZ_DIVIDE 2 /* How many times a second ipfilter */ 1318 /* checks its timeout queues. */ 1319#define IPF_TTLVAL(x) (((x) / IPF_HZ_MULT) * IPF_HZ_DIVIDE) 1320 1321typedef int (*ipftq_delete_fn_t)(struct ipf_main_softc_s *, void *); 1322 1323 1324/* 1325 * Object structure description. For passing through in ioctls. 1326 */ 1327typedef struct ipfobj { 1328 u_32_t ipfo_rev; /* IPFilter version number */ 1329 u_32_t ipfo_size; /* size of object at ipfo_ptr */ 1330 void *ipfo_ptr; /* pointer to object */ 1331 int ipfo_type; /* type of object being pointed to */ 1332 int ipfo_offset; /* bytes from ipfo_ptr where to start */ 1333 int ipfo_retval; /* return value */ 1334 u_char ipfo_xxxpad[28]; /* reserved for future use */ 1335} ipfobj_t; 1336 1337#define IPFOBJ_FRENTRY 0 /* struct frentry */ 1338#define IPFOBJ_IPFSTAT 1 /* struct friostat */ 1339#define IPFOBJ_IPFINFO 2 /* struct fr_info */ 1340#define IPFOBJ_AUTHSTAT 3 /* struct fr_authstat */ 1341#define IPFOBJ_FRAGSTAT 4 /* struct ipfrstat */ 1342#define IPFOBJ_IPNAT 5 /* struct ipnat */ 1343#define IPFOBJ_NATSTAT 6 /* struct natstat */ 1344#define IPFOBJ_STATESAVE 7 /* struct ipstate_save */ 1345#define IPFOBJ_NATSAVE 8 /* struct nat_save */ 1346#define IPFOBJ_NATLOOKUP 9 /* struct natlookup */ 1347#define IPFOBJ_IPSTATE 10 /* struct ipstate */ 1348#define IPFOBJ_STATESTAT 11 /* struct ips_stat */ 1349#define IPFOBJ_FRAUTH 12 /* struct frauth */ 1350#define IPFOBJ_TUNEABLE 13 /* struct ipftune */ 1351#define IPFOBJ_NAT 14 /* struct nat */ 1352#define IPFOBJ_IPFITER 15 /* struct ipfruleiter */ 1353#define IPFOBJ_GENITER 16 /* struct ipfgeniter */ 1354#define IPFOBJ_GTABLE 17 /* struct ipftable */ 1355#define IPFOBJ_LOOKUPITER 18 /* struct ipflookupiter */ 1356#define IPFOBJ_STATETQTAB 19 /* struct ipftq * NSTATES */ 1357#define IPFOBJ_IPFEXPR 20 1358#define IPFOBJ_PROXYCTL 21 /* strct ap_ctl */ 1359#define IPFOBJ_FRIPF 22 /* structfripf */ 1360#define IPFOBJ_COUNT 23 /* How many #defines are above this? */ 1361 1362 1363typedef union ipftunevalptr { 1364 void *ipftp_void; 1365 u_long *ipftp_long; 1366 u_int *ipftp_int; 1367 u_short *ipftp_short; 1368 u_char *ipftp_char; 1369 u_long ipftp_offset; 1370} ipftunevalptr_t; 1371 1372typedef union ipftuneval { 1373 u_long ipftu_long; 1374 u_int ipftu_int; 1375 u_short ipftu_short; 1376 u_char ipftu_char; 1377} ipftuneval_t; 1378 1379struct ipftuneable; 1380typedef int (* ipftunefunc_t) __P((struct ipf_main_softc_s *, struct ipftuneable *, ipftuneval_t *)); 1381 1382typedef struct ipftuneable { 1383 ipftunevalptr_t ipft_una; 1384 const char *ipft_name; 1385 u_long ipft_min; 1386 u_long ipft_max; 1387 int ipft_sz; 1388 int ipft_flags; 1389 struct ipftuneable *ipft_next; 1390 ipftunefunc_t ipft_func; 1391} ipftuneable_t; 1392 1393#define ipft_addr ipft_una.ipftp_void 1394#define ipft_plong ipft_una.ipftp_long 1395#define ipft_pint ipft_una.ipftp_int 1396#define ipft_pshort ipft_una.ipftp_short 1397#define ipft_pchar ipft_una.ipftp_char 1398 1399#define IPFT_RDONLY 1 /* read-only */ 1400#define IPFT_WRDISABLED 2 /* write when disabled only */ 1401 1402typedef struct ipftune { 1403 void *ipft_cookie; 1404 ipftuneval_t ipft_un; 1405 u_long ipft_min; 1406 u_long ipft_max; 1407 int ipft_sz; 1408 int ipft_flags; 1409 char ipft_name[80]; 1410} ipftune_t; 1411 1412#define ipft_vlong ipft_un.ipftu_long 1413#define ipft_vint ipft_un.ipftu_int 1414#define ipft_vshort ipft_un.ipftu_short 1415#define ipft_vchar ipft_un.ipftu_char 1416 1417/* 1418 * Hash table header 1419 */ 1420#define IPFHASH(x,y) typedef struct { \ 1421 ipfrwlock_t ipfh_lock; \ 1422 struct x *ipfh_head; \ 1423 } y 1424 1425/* 1426** HPUX Port 1427*/ 1428#ifdef __hpux 1429/* HP-UX locking sequence deadlock detection module lock MAJOR ID */ 1430# define IPF_SMAJ 0 /* temp assignment XXX, not critical */ 1431#endif 1432 1433#if !defined(CDEV_MAJOR) && defined (__FreeBSD_version) && \ 1434 (__FreeBSD_version >= 220000) 1435# define CDEV_MAJOR 79 1436#endif 1437 1438#ifdef _KERNEL 1439# define FR_VERBOSE(verb_pr) 1440# define FR_DEBUG(verb_pr) 1441#else 1442extern void ipfkdebug __P((char *, ...)); 1443extern void ipfkverbose __P((char *, ...)); 1444# define FR_VERBOSE(verb_pr) ipfkverbose verb_pr 1445# define FR_DEBUG(verb_pr) ipfkdebug verb_pr 1446#endif 1447 1448/* 1449 * 1450 */ 1451typedef struct ipfruleiter { 1452 int iri_inout; 1453 char iri_group[FR_GROUPLEN]; 1454 int iri_active; 1455 int iri_nrules; 1456 int iri_v; /* No longer used (compatibility) */ 1457 frentry_t *iri_rule; 1458} ipfruleiter_t; 1459 1460/* 1461 * Values for iri_inout 1462 */ 1463#define F_IN 0 1464#define F_OUT 1 1465#define F_ACIN 2 1466#define F_ACOUT 3 1467 1468 1469typedef struct ipfgeniter { 1470 int igi_type; 1471 int igi_nitems; 1472 void *igi_data; 1473} ipfgeniter_t; 1474 1475#define IPFGENITER_IPF 0 1476#define IPFGENITER_NAT 1 1477#define IPFGENITER_IPNAT 2 1478#define IPFGENITER_FRAG 3 1479#define IPFGENITER_AUTH 4 1480#define IPFGENITER_STATE 5 1481#define IPFGENITER_NATFRAG 6 1482#define IPFGENITER_HOSTMAP 7 1483#define IPFGENITER_LOOKUP 8 1484 1485typedef struct ipftable { 1486 int ita_type; 1487 void *ita_table; 1488} ipftable_t; 1489 1490#define IPFTABLE_BUCKETS 1 1491#define IPFTABLE_BUCKETS_NATIN 2 1492#define IPFTABLE_BUCKETS_NATOUT 3 1493 1494 1495typedef struct ipf_v4_masktab_s { 1496 u_32_t imt4_active[33]; 1497 int imt4_masks[33]; 1498 int imt4_max; 1499} ipf_v4_masktab_t; 1500 1501typedef struct ipf_v6_masktab_s { 1502 i6addr_t imt6_active[129]; 1503 int imt6_masks[129]; 1504 int imt6_max; 1505} ipf_v6_masktab_t; 1506 1507 1508/* 1509 * 1510 */ 1511typedef struct ipftoken { 1512 struct ipftoken *ipt_next; 1513 struct ipftoken **ipt_pnext; 1514 void *ipt_ctx; 1515 void *ipt_data; 1516 u_long ipt_die; 1517 int ipt_type; 1518 int ipt_uid; 1519 int ipt_subtype; 1520 int ipt_ref; 1521 int ipt_complete; 1522} ipftoken_t; 1523 1524 1525/* 1526 * 1527 */ 1528typedef struct ipfexp { 1529 int ipfe_cmd; 1530 int ipfe_not; 1531 int ipfe_narg; 1532 int ipfe_size; 1533 int ipfe_arg0[1]; 1534} ipfexp_t; 1535 1536/* 1537 * Currently support commands (ipfe_cmd) 1538 * 32bits is split up follows: 1539 * aabbcccc 1540 * aa = 0 = packet matching, 1 = meta data matching 1541 * bb = IP protocol number 1542 * cccc = command 1543 */ 1544#define IPF_EXP_IP_PR 0x00000001 1545#define IPF_EXP_IP_ADDR 0x00000002 1546#define IPF_EXP_IP_SRCADDR 0x00000003 1547#define IPF_EXP_IP_DSTADDR 0x00000004 1548#define IPF_EXP_IP6_ADDR 0x00000005 1549#define IPF_EXP_IP6_SRCADDR 0x00000006 1550#define IPF_EXP_IP6_DSTADDR 0x00000007 1551#define IPF_EXP_TCP_FLAGS 0x00060001 1552#define IPF_EXP_TCP_PORT 0x00060002 1553#define IPF_EXP_TCP_SPORT 0x00060003 1554#define IPF_EXP_TCP_DPORT 0x00060004 1555#define IPF_EXP_UDP_PORT 0x00110002 1556#define IPF_EXP_UDP_SPORT 0x00110003 1557#define IPF_EXP_UDP_DPORT 0x00110004 1558#define IPF_EXP_IDLE_GT 0x01000001 1559#define IPF_EXP_TCP_STATE 0x01060002 1560#define IPF_EXP_END 0xffffffff 1561 1562#define ONE_DAY IPF_TTLVAL(1 * 86400) /* 1 day */ 1563#define FIVE_DAYS (5 * ONE_DAY) 1564 1565typedef struct ipf_main_softc_s { 1566 struct ipf_main_softc_s *ipf_next; 1567 ipfmutex_t ipf_rw; 1568 ipfmutex_t ipf_timeoutlock; 1569 ipfrwlock_t ipf_mutex; 1570 ipfrwlock_t ipf_frag; 1571 ipfrwlock_t ipf_global; 1572 ipfrwlock_t ipf_tokens; 1573 ipfrwlock_t ipf_state; 1574 ipfrwlock_t ipf_nat; 1575 ipfrwlock_t ipf_natfrag; 1576 ipfrwlock_t ipf_poolrw; 1577 int ipf_dynamic_softc; 1578 int ipf_refcnt; 1579 int ipf_running; 1580 int ipf_flags; 1581 int ipf_active; 1582 int ipf_control_forwarding; 1583 int ipf_update_ipid; 1584 int ipf_chksrc; /* causes a system crash if enabled */ 1585 int ipf_pass; 1586 int ipf_minttl; 1587 int ipf_icmpminfragmtu; 1588 int ipf_interror; /* Should be in a struct that is per */ 1589 /* thread or process. Does not belong */ 1590 /* here but there's a lot more work */ 1591 /* in doing that properly. For now, */ 1592 /* it is squatting. */ 1593 u_int ipf_tcpidletimeout; 1594 u_int ipf_tcpclosewait; 1595 u_int ipf_tcplastack; 1596 u_int ipf_tcptimewait; 1597 u_int ipf_tcptimeout; 1598 u_int ipf_tcpsynsent; 1599 u_int ipf_tcpsynrecv; 1600 u_int ipf_tcpclosed; 1601 u_int ipf_tcphalfclosed; 1602 u_int ipf_udptimeout; 1603 u_int ipf_udpacktimeout; 1604 u_int ipf_icmptimeout; 1605 u_int ipf_icmpacktimeout; 1606 u_int ipf_iptimeout; 1607 u_long ipf_ticks; 1608 u_long ipf_userifqs; 1609 u_long ipf_rb_no_mem; 1610 u_long ipf_rb_node_max; 1611 u_long ipf_frouteok[2]; 1612 ipftuneable_t *ipf_tuners; 1613 void *ipf_frag_soft; 1614 void *ipf_nat_soft; 1615 void *ipf_state_soft; 1616 void *ipf_auth_soft; 1617 void *ipf_proxy_soft; 1618 void *ipf_sync_soft; 1619 void *ipf_lookup_soft; 1620 void *ipf_log_soft; 1621 struct frgroup *ipf_groups[IPL_LOGSIZE][2]; 1622 frentry_t *ipf_rules[2][2]; 1623 frentry_t *ipf_acct[2][2]; 1624 frentry_t *ipf_rule_explist[2]; 1625 ipftoken_t *ipf_token_head; 1626 ipftoken_t **ipf_token_tail; 1627#if defined(__FreeBSD_version) && (__FreeBSD_version >= 300000) && \ 1628 defined(_KERNEL) 1629 struct callout ipf_slow_ch; 1630#endif 1631#if defined(linux) && defined(_KERNEL) 1632 struct timer_list ipf_timer; 1633#endif 1634#if NETBSD_GE_REV(104040000) 1635 struct callout ipf_slow_ch; 1636#endif 1637#if SOLARIS 1638# if SOLARIS2 >= 7 1639 timeout_id_t ipf_slow_ch; 1640# else 1641 int ipf_slow_ch; 1642# endif 1643#endif 1644#if defined(_KERNEL) 1645# if SOLARIS 1646 struct pollhead ipf_poll_head[IPL_LOGSIZE]; 1647 void *ipf_dip; 1648# if defined(INSTANCES) 1649 int ipf_get_loopback; 1650 u_long ipf_idnum; 1651 net_handle_t ipf_nd_v4; 1652 net_handle_t ipf_nd_v6; 1653 hook_t *ipf_hk_v4_in; 1654 hook_t *ipf_hk_v4_out; 1655 hook_t *ipf_hk_v4_nic; 1656 hook_t *ipf_hk_v6_in; 1657 hook_t *ipf_hk_v6_out; 1658 hook_t *ipf_hk_v6_nic; 1659 hook_t *ipf_hk_loop_v4_in; 1660 hook_t *ipf_hk_loop_v4_out; 1661 hook_t *ipf_hk_loop_v6_in; 1662 hook_t *ipf_hk_loop_v6_out; 1663# endif 1664# else 1665# if defined(linux) && defined(_KERNEL) 1666 struct poll_table_struct ipf_selwait[IPL_LOGSIZE]; 1667 wait_queue_head_t iplh_linux[IPL_LOGSIZE]; 1668# else 1669 struct selinfo ipf_selwait[IPL_LOGSIZE]; 1670# endif 1671# endif 1672#endif 1673 void *ipf_slow; 1674 ipf_statistics_t ipf_stats[2]; 1675 u_char ipf_iss_secret[32]; 1676 u_short ipf_ip_id; 1677} ipf_main_softc_t; 1678 1679#define IPFERROR(_e) do { softc->ipf_interror = (_e); \ 1680 DT1(user_error, int, _e); \ 1681 } while (0) 1682 1683#ifndef _KERNEL 1684extern int ipf_check __P((void *, struct ip *, int, void *, int, mb_t **)); 1685extern struct ifnet *get_unit __P((char *, int)); 1686extern char *get_ifname __P((struct ifnet *)); 1687extern int ipfioctl __P((ipf_main_softc_t *, int, ioctlcmd_t, 1688 caddr_t, int)); 1689extern void m_freem __P((mb_t *)); 1690extern size_t msgdsize __P((mb_t *)); 1691extern int bcopywrap __P((void *, void *, size_t)); 1692extern void ip_fillid(struct ip *); 1693#else /* #ifndef _KERNEL */ 1694# if defined(__NetBSD__) && defined(PFIL_HOOKS) 1695extern void ipfilterattach __P((int)); 1696# endif 1697extern int ipl_enable __P((void)); 1698extern int ipl_disable __P((void)); 1699# ifdef MENTAT 1700extern int ipf_check __P((void *, struct ip *, int, void *, int, void *, 1701 mblk_t **)); 1702# if SOLARIS 1703extern void ipf_prependmbt(fr_info_t *, mblk_t *); 1704# if SOLARIS2 >= 7 1705extern int ipfioctl __P((dev_t, int, intptr_t, int, cred_t *, int *)); 1706# else 1707extern int ipfioctl __P((dev_t, int, int *, int, cred_t *, int *)); 1708# endif 1709# endif 1710# ifdef __hpux 1711extern int ipfioctl __P((dev_t, int, caddr_t, int)); 1712extern int ipf_select __P((dev_t, int)); 1713# endif 1714extern int ipf_qout __P((queue_t *, mblk_t *)); 1715# else /* MENTAT */ 1716extern int ipf_check __P((void *, struct ip *, int, void *, int, mb_t **)); 1717extern int (*fr_checkp) __P((ip_t *, int, void *, int, mb_t **)); 1718extern size_t mbufchainlen __P((mb_t *)); 1719# ifdef __sgi 1720# include <sys/cred.h> 1721extern int ipfioctl __P((dev_t, int, caddr_t, int, cred_t *, int *)); 1722extern int ipfilter_sgi_attach __P((void)); 1723extern void ipfilter_sgi_detach __P((void)); 1724extern void ipfilter_sgi_intfsync __P((void)); 1725# else 1726# ifdef IPFILTER_LKM 1727extern int ipf_identify __P((char *)); 1728# endif 1729# if BSDOS_GE_REV(199510) || FREEBSD_GE_REV(220000) || \ 1730 (defined(NetBSD) && (NetBSD >= 199511)) || defined(__OpenBSD__) 1731# if defined(__NetBSD__) || BSDOS_GE_REV(199701) || \ 1732 defined(__OpenBSD__) || FREEBSD_GE_REV(300000) 1733# if (__FreeBSD_version >= 500024) 1734# if (__FreeBSD_version >= 502116) 1735extern int ipfioctl __P((struct cdev*, u_long, caddr_t, int, struct thread *)); 1736# else 1737extern int ipfioctl __P((dev_t, u_long, caddr_t, int, struct thread *)); 1738# endif /* __FreeBSD_version >= 502116 */ 1739# else 1740# if NETBSD_GE_REV(499001000) 1741extern int ipfioctl __P((dev_t, u_long, void *, int, struct lwp *)); 1742# else 1743# if NETBSD_GE_REV(399001400) 1744extern int ipfioctl __P((dev_t, u_long, caddr_t, int, struct lwp *)); 1745# else 1746extern int ipfioctl __P((dev_t, u_long, caddr_t, int, struct proc *)); 1747# endif 1748# endif 1749# endif /* __FreeBSD_version >= 500024 */ 1750# else 1751extern int ipfioctl __P((dev_t, int, caddr_t, int, struct proc *)); 1752# endif 1753# else 1754# ifdef linux 1755extern int ipfioctl __P((struct inode *, struct file *, u_int, u_long)); 1756# else 1757extern int ipfioctl __P((dev_t, int, caddr_t, int)); 1758# endif 1759# endif /* (_BSDI_VERSION >= 199510) */ 1760# endif /* __ sgi */ 1761# endif /* MENTAT */ 1762 1763# if defined(__FreeBSD_version) 1764extern int ipf_pfil_hook __P((void)); 1765extern int ipf_pfil_unhook __P((void)); 1766extern void ipf_event_reg __P((void)); 1767extern void ipf_event_dereg __P((void)); 1768# endif 1769 1770# if defined(INSTANCES) 1771extern ipf_main_softc_t *ipf_find_softc __P((u_long)); 1772extern int ipf_set_loopback __P((ipf_main_softc_t *, ipftuneable_t *, 1773 ipftuneval_t *)); 1774# endif 1775 1776#endif /* #ifndef _KERNEL */ 1777 1778extern char *memstr __P((const char *, char *, size_t, size_t)); 1779extern int count4bits __P((u_32_t)); 1780#ifdef USE_INET6 1781extern int count6bits __P((u_32_t *)); 1782#endif 1783extern int frrequest __P((ipf_main_softc_t *, int, ioctlcmd_t, caddr_t, 1784 int, int)); 1785extern char *getifname __P((struct ifnet *)); 1786extern int ipfattach __P((ipf_main_softc_t *)); 1787extern int ipfdetach __P((ipf_main_softc_t *)); 1788extern u_short ipf_cksum __P((u_short *, int)); 1789extern int copyinptr __P((ipf_main_softc_t *, void *, void *, size_t)); 1790extern int copyoutptr __P((ipf_main_softc_t *, void *, void *, size_t)); 1791extern int ipf_fastroute __P((mb_t *, mb_t **, fr_info_t *, frdest_t *)); 1792extern int ipf_inject __P((fr_info_t *, mb_t *)); 1793extern int ipf_inobj __P((ipf_main_softc_t *, void *, ipfobj_t *, 1794 void *, int)); 1795extern int ipf_inobjsz __P((ipf_main_softc_t *, void *, void *, 1796 int , int)); 1797extern int ipf_ioctlswitch __P((ipf_main_softc_t *, int, void *, 1798 ioctlcmd_t, int, int, void *)); 1799extern int ipf_ipf_ioctl __P((ipf_main_softc_t *, caddr_t, ioctlcmd_t, 1800 int, int, void *)); 1801extern int ipf_ipftune __P((ipf_main_softc_t *, ioctlcmd_t, void *)); 1802extern int ipf_matcharray_load __P((ipf_main_softc_t *, caddr_t, 1803 ipfobj_t *, int **)); 1804extern int ipf_matcharray_verify __P((int *, int)); 1805extern int ipf_outobj __P((ipf_main_softc_t *, void *, void *, int)); 1806extern int ipf_outobjk __P((ipf_main_softc_t *, ipfobj_t *, void *)); 1807extern int ipf_outobjsz __P((ipf_main_softc_t *, void *, void *, 1808 int, int)); 1809extern void *ipf_pullup __P((mb_t *, fr_info_t *, int)); 1810extern int ipf_resolvedest __P((ipf_main_softc_t *, char *, 1811 struct frdest *, int)); 1812extern int ipf_resolvefunc __P((ipf_main_softc_t *, void *)); 1813extern void *ipf_resolvenic __P((ipf_main_softc_t *, char *, int)); 1814extern int ipf_send_icmp_err __P((int, fr_info_t *, int)); 1815extern int ipf_send_reset __P((fr_info_t *)); 1816#if (defined(__FreeBSD_version) && (__FreeBSD_version < 501000)) || \ 1817 !defined(_KERNEL) || defined(linux) 1818#endif 1819extern void ipf_apply_timeout __P((ipftq_t *, u_int)); 1820extern ipftq_t *ipf_addtimeoutqueue __P((ipf_main_softc_t *, ipftq_t **, 1821 u_int)); 1822extern void ipf_deletequeueentry __P((ipftqent_t *)); 1823extern int ipf_deletetimeoutqueue __P((ipftq_t *)); 1824extern void ipf_freetimeoutqueue __P((ipf_main_softc_t *, ipftq_t *)); 1825extern void ipf_movequeue __P((u_long, ipftqent_t *, ipftq_t *, 1826 ipftq_t *)); 1827extern void ipf_queueappend __P((u_long, ipftqent_t *, ipftq_t *, void *)); 1828extern void ipf_queueback __P((u_long, ipftqent_t *)); 1829extern int ipf_queueflush __P((ipf_main_softc_t *, ipftq_delete_fn_t, 1830 ipftq_t *, ipftq_t *, u_int *, int, int)); 1831extern void ipf_queuefront __P((ipftqent_t *)); 1832extern int ipf_settimeout_tcp __P((ipftuneable_t *, ipftuneval_t *, 1833 ipftq_t *)); 1834extern int ipf_checkv4sum __P((fr_info_t *)); 1835extern int ipf_checkl4sum __P((fr_info_t *)); 1836extern int ipf_ifpfillv4addr __P((int, struct sockaddr_in *, 1837 struct sockaddr_in *, struct in_addr *, 1838 struct in_addr *)); 1839extern int ipf_coalesce __P((fr_info_t *)); 1840#ifdef USE_INET6 1841extern int ipf_checkv6sum __P((fr_info_t *)); 1842extern int ipf_ifpfillv6addr __P((int, struct sockaddr_in6 *, 1843 struct sockaddr_in6 *, i6addr_t *, 1844 i6addr_t *)); 1845#endif 1846 1847extern int ipf_tune_add __P((ipf_main_softc_t *, ipftuneable_t *)); 1848extern int ipf_tune_add_array __P((ipf_main_softc_t *, ipftuneable_t *)); 1849extern int ipf_tune_del __P((ipf_main_softc_t *, ipftuneable_t *)); 1850extern int ipf_tune_del_array __P((ipf_main_softc_t *, ipftuneable_t *)); 1851extern int ipf_tune_array_link __P((ipf_main_softc_t *, ipftuneable_t *)); 1852extern int ipf_tune_array_unlink __P((ipf_main_softc_t *, 1853 ipftuneable_t *)); 1854extern ipftuneable_t *ipf_tune_array_copy __P((void *, size_t, 1855 ipftuneable_t *)); 1856 1857extern int ipf_pr_pullup __P((fr_info_t *, int)); 1858 1859extern int ipf_flush __P((ipf_main_softc_t *, minor_t, int)); 1860extern frgroup_t *ipf_group_add __P((ipf_main_softc_t *, char *, void *, 1861 u_32_t, minor_t, int)); 1862extern void ipf_group_del __P((ipf_main_softc_t *, frgroup_t *, 1863 frentry_t *)); 1864extern int ipf_derefrule __P((ipf_main_softc_t *, frentry_t **)); 1865extern frgroup_t *ipf_findgroup __P((ipf_main_softc_t *, char *, minor_t, 1866 int, frgroup_t ***)); 1867 1868extern int ipf_log_init __P((void)); 1869extern int ipf_log_bytesused __P((ipf_main_softc_t *, int)); 1870extern int ipf_log_canread __P((ipf_main_softc_t *, int)); 1871extern int ipf_log_clear __P((ipf_main_softc_t *, minor_t)); 1872extern u_long ipf_log_failures __P((ipf_main_softc_t *, int)); 1873extern int ipf_log_read __P((ipf_main_softc_t *, minor_t, uio_t *)); 1874extern int ipf_log_items __P((ipf_main_softc_t *, int, fr_info_t *, 1875 void **, size_t *, int *, int)); 1876extern u_long ipf_log_logok __P((ipf_main_softc_t *, int)); 1877extern void ipf_log_unload __P((ipf_main_softc_t *)); 1878extern int ipf_log_pkt __P((fr_info_t *, u_int)); 1879 1880extern frentry_t *ipf_acctpkt __P((fr_info_t *, u_32_t *)); 1881extern u_short fr_cksum __P((fr_info_t *, ip_t *, int, void *)); 1882extern void ipf_deinitialise __P((ipf_main_softc_t *)); 1883extern int ipf_deliverlocal __P((ipf_main_softc_t *, int, void *, 1884 i6addr_t *)); 1885extern frentry_t *ipf_dstgrpmap __P((fr_info_t *, u_32_t *)); 1886extern void ipf_fixskip __P((frentry_t **, frentry_t *, int)); 1887extern void ipf_forgetifp __P((ipf_main_softc_t *, void *)); 1888extern frentry_t *ipf_getrulen __P((ipf_main_softc_t *, int, char *, 1889 u_32_t)); 1890extern int ipf_ifpaddr __P((ipf_main_softc_t *, int, int, void *, 1891 i6addr_t *, i6addr_t *)); 1892extern void ipf_inet_mask_add __P((int, ipf_v4_masktab_t *)); 1893extern void ipf_inet_mask_del __P((int, ipf_v4_masktab_t *)); 1894#ifdef USE_INET6 1895extern void ipf_inet6_mask_add __P((int, i6addr_t *, 1896 ipf_v6_masktab_t *)); 1897extern void ipf_inet6_mask_del __P((int, i6addr_t *, 1898 ipf_v6_masktab_t *)); 1899#endif 1900extern int ipf_initialise __P((void)); 1901extern int ipf_lock __P((caddr_t, int *)); 1902extern int ipf_makefrip __P((int, ip_t *, fr_info_t *)); 1903extern int ipf_matchtag __P((ipftag_t *, ipftag_t *)); 1904extern int ipf_matchicmpqueryreply __P((int, icmpinfo_t *, 1905 struct icmp *, int)); 1906extern u_32_t ipf_newisn __P((fr_info_t *)); 1907extern u_int ipf_pcksum __P((fr_info_t *, int, u_int)); 1908extern void ipf_rule_expire __P((ipf_main_softc_t *)); 1909extern int ipf_scanlist __P((fr_info_t *, u_32_t)); 1910extern frentry_t *ipf_srcgrpmap __P((fr_info_t *, u_32_t *)); 1911extern int ipf_tcpudpchk __P((fr_ip_t *, frtuc_t *)); 1912extern int ipf_verifysrc __P((fr_info_t *fin)); 1913extern int ipf_zerostats __P((ipf_main_softc_t *, char *)); 1914extern int ipf_getnextrule __P((ipf_main_softc_t *, ipftoken_t *, 1915 void *)); 1916extern int ipf_sync __P((ipf_main_softc_t *, void *)); 1917extern int ipf_token_deref __P((ipf_main_softc_t *, ipftoken_t *)); 1918extern void ipf_token_expire __P((ipf_main_softc_t *)); 1919extern ipftoken_t *ipf_token_find __P((ipf_main_softc_t *, int, int, 1920 void *)); 1921extern int ipf_token_del __P((ipf_main_softc_t *, int, int, 1922 void *)); 1923extern void ipf_token_mark_complete __P((ipftoken_t *)); 1924extern int ipf_genericiter __P((ipf_main_softc_t *, void *, 1925 int, void *)); 1926#ifdef IPFILTER_LOOKUP 1927extern void *ipf_resolvelookup __P((int, u_int, u_int, 1928 lookupfunc_t *)); 1929#endif 1930extern u_32_t ipf_random __P((void)); 1931 1932extern int ipf_main_load __P((void)); 1933extern void *ipf_main_soft_create __P((void *)); 1934extern void ipf_main_soft_destroy __P((ipf_main_softc_t *)); 1935extern int ipf_main_soft_init __P((ipf_main_softc_t *)); 1936extern int ipf_main_soft_fini __P((ipf_main_softc_t *)); 1937extern int ipf_main_unload __P((void)); 1938extern int ipf_load_all __P((void)); 1939extern int ipf_unload_all __P((void)); 1940extern void ipf_destroy_all __P((ipf_main_softc_t *)); 1941extern ipf_main_softc_t *ipf_create_all __P((void *)); 1942extern int ipf_init_all __P((ipf_main_softc_t *)); 1943extern int ipf_fini_all __P((ipf_main_softc_t *)); 1944extern void ipf_log_soft_destroy __P((ipf_main_softc_t *, void *)); 1945extern void *ipf_log_soft_create __P((ipf_main_softc_t *)); 1946extern int ipf_log_soft_init __P((ipf_main_softc_t *, void *)); 1947extern int ipf_log_soft_fini __P((ipf_main_softc_t *, void *)); 1948extern int ipf_log_main_load __P((void)); 1949extern int ipf_log_main_unload __P((void)); 1950 1951 1952extern char ipfilter_version[]; 1953#ifdef USE_INET6 1954extern int icmptoicmp6types[ICMP_MAXTYPE+1]; 1955extern int icmptoicmp6unreach[ICMP_MAX_UNREACH]; 1956extern int icmpreplytype6[ICMP6_MAXTYPE + 1]; 1957#endif 1958#ifdef IPFILTER_COMPAT 1959extern int ipf_in_compat __P((ipf_main_softc_t *, ipfobj_t *, void *,int)); 1960extern int ipf_out_compat __P((ipf_main_softc_t *, ipfobj_t *, void *)); 1961#endif 1962extern int icmpreplytype4[ICMP_MAXTYPE + 1]; 1963 1964extern int ipf_ht_node_add __P((ipf_main_softc_t *, host_track_t *, 1965 int, i6addr_t *)); 1966extern int ipf_ht_node_del __P((host_track_t *, int, i6addr_t *)); 1967extern void ipf_rb_ht_flush __P((host_track_t *)); 1968extern void ipf_rb_ht_freenode __P((host_node_t *, void *)); 1969extern void ipf_rb_ht_init __P((host_track_t *)); 1970 1971#endif /* __IP_FIL_H__ */ 1972