1 0 stevel /* 2 2393 yz155240 * Copyright (C) 1995-2001, 2003 by Darren Reed. 3 0 stevel * 4 0 stevel * See the IPFILTER.LICENCE file for details on licencing. 5 0 stevel * 6 0 stevel * @(#)ip_nat.h 1.5 2/4/96 7 2393 yz155240 * $Id: ip_nat.h,v 2.90.2.11 2005/06/18 02:41:32 darrenr Exp $ 8 4817 an207044 * 9 8624 Darren * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 10 429 dr146992 * Use is subject to license terms. 11 0 stevel */ 12 0 stevel 13 0 stevel #ifndef __IP_NAT_H__ 14 0 stevel #define __IP_NAT_H__ 15 0 stevel 16 0 stevel #ifndef SOLARIS 17 0 stevel #define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4))) 18 0 stevel #endif 19 0 stevel 20 2393 yz155240 #if defined(__STDC__) || defined(__GNUC__) || defined(_AIX51) 21 0 stevel #define SIOCADNAT _IOW('r', 60, struct ipfobj) 22 0 stevel #define SIOCRMNAT _IOW('r', 61, struct ipfobj) 23 0 stevel #define SIOCGNATS _IOWR('r', 62, struct ipfobj) 24 0 stevel #define SIOCGNATL _IOWR('r', 63, struct ipfobj) 25 0 stevel #else 26 0 stevel #define SIOCADNAT _IOW(r, 60, struct ipfobj) 27 0 stevel #define SIOCRMNAT _IOW(r, 61, struct ipfobj) 28 0 stevel #define SIOCGNATS _IOWR(r, 62, struct ipfobj) 29 0 stevel #define SIOCGNATL _IOWR(r, 63, struct ipfobj) 30 0 stevel #endif 31 0 stevel 32 7176 yx160601 #undef LARGE_NAT /* define this if you're setting up a system to NAT 33 0 stevel * LARGE numbers of networks/hosts - i.e. in the 34 0 stevel * hundreds or thousands. In such a case, you should 35 0 stevel * also change the RDR_SIZE and NAT_SIZE below to more 36 0 stevel * appropriate sizes. The figures below were used for 37 0 stevel * a setup with 1000-2000 networks to NAT. 38 0 stevel */ 39 0 stevel #ifndef NAT_SIZE 40 0 stevel # ifdef LARGE_NAT 41 0 stevel # define NAT_SIZE 2047 42 0 stevel # else 43 0 stevel # define NAT_SIZE 127 44 0 stevel # endif 45 0 stevel #endif 46 0 stevel #ifndef RDR_SIZE 47 0 stevel # ifdef LARGE_NAT 48 0 stevel # define RDR_SIZE 2047 49 0 stevel # else 50 0 stevel # define RDR_SIZE 127 51 0 stevel # endif 52 0 stevel #endif 53 0 stevel #ifndef HOSTMAP_SIZE 54 0 stevel # ifdef LARGE_NAT 55 2393 yz155240 # define HOSTMAP_SIZE 8191 56 2393 yz155240 # else 57 0 stevel # define HOSTMAP_SIZE 2047 58 2393 yz155240 # endif 59 2393 yz155240 #endif 60 2393 yz155240 #ifndef NAT_TABLE_MAX 61 2393 yz155240 /* 62 2393 yz155240 * This is newly introduced and for the sake of "least surprise", the numbers 63 2393 yz155240 * present aren't what we'd normally use for creating a proper hash table. 64 2393 yz155240 */ 65 2393 yz155240 # ifdef LARGE_NAT 66 2393 yz155240 # define NAT_TABLE_MAX 180000 67 0 stevel # else 68 2393 yz155240 # define NAT_TABLE_MAX 30000 69 0 stevel # endif 70 0 stevel #endif 71 0 stevel #ifndef NAT_TABLE_SZ 72 0 stevel # ifdef LARGE_NAT 73 2393 yz155240 # define NAT_TABLE_SZ 16383 74 2393 yz155240 # else 75 0 stevel # define NAT_TABLE_SZ 2047 76 0 stevel # endif 77 0 stevel #endif 78 0 stevel #ifndef APR_LABELLEN 79 0 stevel #define APR_LABELLEN 16 80 0 stevel #endif 81 0 stevel 82 0 stevel #define DEF_NAT_AGE 1200 /* 10 minutes (600 seconds) */ 83 4817 an207044 84 0 stevel struct ipstate; 85 0 stevel struct ap_session; 86 0 stevel 87 0 stevel typedef struct nat { 88 0 stevel ipfmutex_t nat_lock; 89 0 stevel struct nat *nat_next; 90 0 stevel struct nat **nat_pnext; 91 0 stevel struct nat *nat_hnext[2]; 92 0 stevel struct nat **nat_phnext[2]; 93 0 stevel struct hostmap *nat_hm; 94 0 stevel void *nat_data; 95 0 stevel struct nat **nat_me; 96 0 stevel struct ipstate *nat_state; 97 0 stevel struct ap_session *nat_aps; /* proxy session */ 98 0 stevel frentry_t *nat_fr; /* filter rule ptr if appropriate */ 99 0 stevel struct ipnat *nat_ptr; /* pointer back to the rule */ 100 0 stevel void *nat_ifps[2]; 101 0 stevel void *nat_sync; 102 0 stevel ipftqent_t nat_tqe; 103 0 stevel u_32_t nat_flags; 104 7176 yx160601 u_32_t nat_sumd[2]; /* ip checksum delta for data segment */ 105 0 stevel u_32_t nat_ipsumd; /* ip checksum delta for ip header */ 106 0 stevel u_32_t nat_mssclamp; /* if != zero clamp MSS to this */ 107 0 stevel i6addr_t nat_inip6; 108 0 stevel i6addr_t nat_outip6; 109 0 stevel i6addr_t nat_oip6; /* other ip */ 110 0 stevel U_QUAD_T nat_pkts[2]; 111 0 stevel U_QUAD_T nat_bytes[2]; 112 0 stevel union { 113 0 stevel udpinfo_t nat_unu; 114 0 stevel tcpinfo_t nat_unt; 115 0 stevel icmpinfo_t nat_uni; 116 0 stevel greinfo_t nat_ugre; 117 0 stevel } nat_un; 118 0 stevel u_short nat_oport; /* other port */ 119 0 stevel u_short nat_use; 120 0 stevel u_char nat_p; /* protocol for NAT */ 121 0 stevel int nat_dir; 122 0 stevel int nat_ref; /* reference count */ 123 0 stevel int nat_hv[2]; 124 0 stevel char nat_ifnames[2][LIFNAMSIZ]; 125 2393 yz155240 int nat_rev; /* 0 = forward, 1 = reverse */ 126 7176 yx160601 int nat_v; 127 3448 dh155122 int nat_redir; /* copy of in_redir */ 128 0 stevel } nat_t; 129 0 stevel 130 0 stevel #define nat_inip nat_inip6.in4 131 0 stevel #define nat_outip nat_outip6.in4 132 0 stevel #define nat_oip nat_oip6.in4 133 0 stevel #define nat_age nat_tqe.tqe_die 134 0 stevel #define nat_inport nat_un.nat_unt.ts_sport 135 0 stevel #define nat_outport nat_un.nat_unt.ts_dport 136 0 stevel #define nat_type nat_un.nat_uni.ici_type 137 0 stevel #define nat_seq nat_un.nat_uni.ici_seq 138 0 stevel #define nat_id nat_un.nat_uni.ici_id 139 0 stevel #define nat_tcpstate nat_tqe.tqe_state 140 0 stevel 141 0 stevel /* 142 0 stevel * Values for nat_dir 143 0 stevel */ 144 0 stevel #define NAT_INBOUND 0 145 0 stevel #define NAT_OUTBOUND 1 146 0 stevel 147 0 stevel /* 148 0 stevel * Definitions for nat_flags 149 0 stevel */ 150 0 stevel #define NAT_TCP 0x0001 /* IPN_TCP */ 151 0 stevel #define NAT_UDP 0x0002 /* IPN_UDP */ 152 0 stevel #define NAT_ICMPERR 0x0004 /* IPN_ICMPERR */ 153 0 stevel #define NAT_ICMPQUERY 0x0008 /* IPN_ICMPQUERY */ 154 0 stevel #define NAT_SEARCH 0x0010 155 0 stevel #define NAT_SLAVE 0x0020 /* Slave connection for a proxy */ 156 0 stevel #define NAT_NOTRULEPORT 0x0040 157 0 stevel 158 0 stevel #define NAT_TCPUDP (NAT_TCP|NAT_UDP) 159 0 stevel #define NAT_TCPUDPICMP (NAT_TCP|NAT_UDP|NAT_ICMPERR) 160 2393 yz155240 #define NAT_TCPUDPICMPQ (NAT_TCP|NAT_UDP|NAT_ICMPQUERY) 161 0 stevel #define NAT_FROMRULE (NAT_TCP|NAT_UDP) 162 0 stevel 163 0 stevel /* 0x0100 reserved for FI_W_SPORT */ 164 0 stevel /* 0x0200 reserved for FI_W_DPORT */ 165 0 stevel /* 0x0400 reserved for FI_W_SADDR */ 166 0 stevel /* 0x0800 reserved for FI_W_DADDR */ 167 0 stevel /* 0x1000 reserved for FI_W_NEWFR */ 168 0 stevel /* 0x2000 reserved for SI_CLONE */ 169 0 stevel /* 0x4000 reserved for SI_CLONED */ 170 0 stevel /* 0x8000 reserved for SI_IGNOREPKT */ 171 0 stevel 172 0 stevel #define NAT_DEBUG 0x800000 173 0 stevel 174 0 stevel typedef struct ipnat { 175 0 stevel struct ipnat *in_next; /* NAT rule list next */ 176 0 stevel struct ipnat *in_rnext; /* rdr rule hash next */ 177 0 stevel struct ipnat **in_prnext; /* prior rdr next ptr */ 178 0 stevel struct ipnat *in_mnext; /* map rule hash next */ 179 0 stevel struct ipnat **in_pmnext; /* prior map next ptr */ 180 0 stevel struct ipftq *in_tqehead[2]; 181 0 stevel void *in_ifps[2]; 182 0 stevel void *in_apr; 183 0 stevel char *in_comment; 184 0 stevel i6addr_t in_next6; 185 0 stevel u_long in_space; 186 0 stevel u_long in_hits; 187 0 stevel u_int in_use; 188 0 stevel u_int in_hv; 189 0 stevel int in_flineno; /* conf. file line number */ 190 0 stevel u_short in_pnext; 191 2393 yz155240 u_char in_v; 192 2393 yz155240 u_char in_xxx; 193 0 stevel /* From here to the end is covered by IPN_CMPSIZ */ 194 0 stevel u_32_t in_flags; 195 0 stevel u_32_t in_mssclamp; /* if != 0 clamp MSS to this */ 196 0 stevel u_int in_age[2]; 197 0 stevel int in_redir; /* see below for values */ 198 0 stevel int in_p; /* protocol. */ 199 0 stevel i6addr_t in_in[2]; 200 0 stevel i6addr_t in_out[2]; 201 0 stevel i6addr_t in_src[2]; 202 0 stevel frtuc_t in_tuc; 203 0 stevel u_short in_port[2]; 204 0 stevel u_short in_ppip; /* ports per IP. */ 205 0 stevel u_short in_ippip; /* IP #'s per IP# */ 206 0 stevel char in_ifnames[2][LIFNAMSIZ]; 207 0 stevel char in_plabel[APR_LABELLEN]; /* proxy label. */ 208 0 stevel ipftag_t in_tag; 209 0 stevel } ipnat_t; 210 0 stevel 211 0 stevel #define in_pmin in_port[0] /* Also holds static redir port */ 212 0 stevel #define in_pmax in_port[1] 213 0 stevel #define in_nextip in_next6.in4 214 0 stevel #define in_nip in_next6.in4.s_addr 215 0 stevel #define in_inip in_in[0].in4.s_addr 216 0 stevel #define in_inmsk in_in[1].in4.s_addr 217 0 stevel #define in_outip in_out[0].in4.s_addr 218 0 stevel #define in_outmsk in_out[1].in4.s_addr 219 0 stevel #define in_srcip in_src[0].in4.s_addr 220 0 stevel #define in_srcmsk in_src[1].in4.s_addr 221 0 stevel #define in_scmp in_tuc.ftu_scmp 222 0 stevel #define in_dcmp in_tuc.ftu_dcmp 223 0 stevel #define in_stop in_tuc.ftu_stop 224 0 stevel #define in_dtop in_tuc.ftu_dtop 225 0 stevel #define in_sport in_tuc.ftu_sport 226 0 stevel #define in_dport in_tuc.ftu_dport 227 0 stevel 228 0 stevel /* 229 0 stevel * Bit definitions for in_flags 230 0 stevel */ 231 0 stevel #define IPN_ANY 0x00000 232 0 stevel #define IPN_TCP 0x00001 233 0 stevel #define IPN_UDP 0x00002 234 0 stevel #define IPN_TCPUDP (IPN_TCP|IPN_UDP) 235 0 stevel #define IPN_ICMPERR 0x00004 236 0 stevel #define IPN_TCPUDPICMP (IPN_TCP|IPN_UDP|IPN_ICMPERR) 237 0 stevel #define IPN_ICMPQUERY 0x00008 238 2393 yz155240 #define IPN_TCPUDPICMPQ (IPN_TCP|IPN_UDP|IPN_ICMPQUERY) 239 0 stevel #define IPN_RF (IPN_TCPUDP|IPN_DELETE|IPN_ICMPERR) 240 0 stevel #define IPN_AUTOPORTMAP 0x00010 241 0 stevel #define IPN_IPRANGE 0x00020 242 0 stevel #define IPN_FILTER 0x00040 243 0 stevel #define IPN_SPLIT 0x00080 244 0 stevel #define IPN_ROUNDR 0x00100 245 0 stevel #define IPN_NOTSRC 0x04000 246 0 stevel #define IPN_NOTDST 0x08000 247 0 stevel #define IPN_DYNSRCIP 0x10000 /* dynamic src IP# */ 248 0 stevel #define IPN_DYNDSTIP 0x20000 /* dynamic dst IP# */ 249 0 stevel #define IPN_DELETE 0x40000 250 0 stevel #define IPN_STICKY 0x80000 251 0 stevel #define IPN_FRAG 0x100000 252 2393 yz155240 #define IPN_FIXEDDPORT 0x200000 253 429 dr146992 #define IPN_FINDFORWARD 0x400000 254 2393 yz155240 #define IPN_IN 0x800000 255 7259 dr146992 #define IPN_SEQUENTIAL 0x1000000 256 0 stevel #define IPN_USERFLAGS (IPN_TCPUDP|IPN_AUTOPORTMAP|IPN_IPRANGE|IPN_SPLIT|\ 257 0 stevel IPN_ROUNDR|IPN_FILTER|IPN_NOTSRC|IPN_NOTDST|\ 258 7259 dr146992 IPN_FRAG|IPN_STICKY|IPN_FIXEDDPORT|IPN_ICMPQUERY|\ 259 7259 dr146992 IPN_SEQUENTIAL) 260 0 stevel 261 0 stevel /* 262 0 stevel * Values for in_redir 263 0 stevel */ 264 0 stevel #define NAT_MAP 0x01 265 0 stevel #define NAT_REDIRECT 0x02 266 0 stevel #define NAT_BIMAP (NAT_MAP|NAT_REDIRECT) 267 0 stevel #define NAT_MAPBLK 0x04 268 0 stevel 269 0 stevel #define MAPBLK_MINPORT 1024 /* don't use reserved ports for src port */ 270 0 stevel #define USABLE_PORTS (65536 - MAPBLK_MINPORT) 271 0 stevel 272 7176 yx160601 #define IPN_CMPSIZ (sizeof (ipnat_t) - offsetof(ipnat_t, in_flags)) 273 0 stevel 274 0 stevel typedef struct natlookup { 275 7176 yx160601 i6addr_t nl_inipaddr; 276 7176 yx160601 i6addr_t nl_outipaddr; 277 7176 yx160601 i6addr_t nl_realipaddr; 278 7176 yx160601 int nl_v; 279 7176 yx160601 int nl_flags; 280 7176 yx160601 u_short nl_inport; 281 7176 yx160601 u_short nl_outport; 282 7176 yx160601 u_short nl_realport; 283 0 stevel } natlookup_t; 284 7176 yx160601 285 7176 yx160601 #define nl_inip nl_inipaddr.in4 286 7176 yx160601 #define nl_outip nl_outipaddr.in4 287 7176 yx160601 #define nl_realip nl_realipaddr.in4 288 7176 yx160601 #define nl_inip6 nl_inipaddr.in6 289 7176 yx160601 #define nl_outip6 nl_outipaddr.in6 290 7176 yx160601 #define nl_realip6 nl_realipaddr.in6 291 0 stevel 292 0 stevel 293 0 stevel typedef struct nat_save { 294 0 stevel void *ipn_next; 295 0 stevel struct nat ipn_nat; 296 0 stevel struct ipnat ipn_ipnat; 297 0 stevel struct frentry ipn_fr; 298 0 stevel int ipn_dsize; 299 0 stevel char ipn_data[4]; 300 0 stevel } nat_save_t; 301 0 stevel 302 0 stevel #define ipn_rule ipn_nat.nat_fr 303 0 stevel 304 0 stevel typedef struct natget { 305 0 stevel void *ng_ptr; 306 0 stevel int ng_sz; 307 0 stevel } natget_t; 308 0 stevel 309 0 stevel 310 2393 yz155240 #undef tr_flags 311 0 stevel typedef struct nattrpnt { 312 0 stevel struct in_addr tr_dstip; /* real destination IP# */ 313 0 stevel struct in_addr tr_srcip; /* real source IP# */ 314 0 stevel struct in_addr tr_locip; /* local source IP# */ 315 0 stevel u_int tr_flags; 316 0 stevel int tr_expire; 317 0 stevel u_short tr_dstport; /* real destination port# */ 318 0 stevel u_short tr_srcport; /* real source port# */ 319 0 stevel u_short tr_locport; /* local source port# */ 320 0 stevel struct nattrpnt *tr_hnext; 321 0 stevel struct nattrpnt **tr_phnext; 322 0 stevel struct nattrpnt *tr_next; 323 0 stevel struct nattrpnt **tr_pnext; /* previous next */ 324 0 stevel } nattrpnt_t; 325 0 stevel 326 0 stevel #define TN_CMPSIZ offsetof(nattrpnt_t, tr_hnext) 327 0 stevel 328 0 stevel 329 0 stevel /* 330 0 stevel * This structure gets used to help NAT sessions keep the same NAT rule (and 331 0 stevel * thus translation for IP address) when: 332 0 stevel * (a) round-robin redirects are in use 333 0 stevel * (b) different IP add 334 0 stevel */ 335 0 stevel typedef struct hostmap { 336 0 stevel struct hostmap *hm_next; 337 0 stevel struct hostmap **hm_pnext; 338 3448 dh155122 struct hostmap *hm_hnext; 339 3448 dh155122 struct hostmap **hm_phnext; 340 0 stevel struct ipnat *hm_ipnat; 341 7176 yx160601 i6addr_t hm_src; 342 7176 yx160601 i6addr_t hm_dst; 343 7176 yx160601 i6addr_t hm_map; 344 0 stevel u_32_t hm_port; 345 0 stevel int hm_ref; 346 7176 yx160601 int hm_v; 347 0 stevel } hostmap_t; 348 7176 yx160601 349 7176 yx160601 #define hm_srcip hm_src.in4 350 7176 yx160601 #define hm_dstip hm_dst.in4 351 7176 yx160601 #define hm_mapip hm_map.in4 352 7176 yx160601 #define hm_srcip6 hm_src.in6 353 7176 yx160601 #define hm_dstip6 hm_dst.in6 354 7176 yx160601 #define hm_mapip6 hm_map.in6 355 0 stevel 356 0 stevel 357 0 stevel /* 358 0 stevel * Structure used to pass information in to nat_newmap and nat_newrdr. 359 0 stevel */ 360 0 stevel typedef struct natinfo { 361 0 stevel ipnat_t *nai_np; 362 0 stevel u_32_t nai_nflags; 363 0 stevel u_32_t nai_flags; 364 0 stevel struct in_addr nai_ip; 365 0 stevel u_short nai_port; 366 0 stevel u_short nai_nport; 367 0 stevel u_short nai_sport; 368 0 stevel u_short nai_dport; 369 0 stevel } natinfo_t; 370 0 stevel 371 0 stevel 372 0 stevel typedef struct natstat { 373 0 stevel u_long ns_mapped[2]; 374 0 stevel u_long ns_rules; 375 0 stevel u_long ns_added; 376 0 stevel u_long ns_expire; 377 0 stevel u_long ns_inuse; 378 0 stevel u_long ns_logged; 379 0 stevel u_long ns_logfail; 380 0 stevel u_long ns_memfail; 381 0 stevel u_long ns_badnat; 382 0 stevel u_long ns_addtrpnt; 383 0 stevel nat_t **ns_table[2]; 384 0 stevel hostmap_t **ns_maptable; 385 0 stevel ipnat_t *ns_list; 386 0 stevel void *ns_apslist; 387 0 stevel u_int ns_wilds; 388 0 stevel u_int ns_nattab_sz; 389 2393 yz155240 u_int ns_nattab_max; 390 0 stevel u_int ns_rultab_sz; 391 0 stevel u_int ns_rdrtab_sz; 392 0 stevel u_int ns_trpntab_sz; 393 0 stevel u_int ns_hostmap_sz; 394 0 stevel nat_t *ns_instances; 395 0 stevel nattrpnt_t *ns_trpntlist; 396 3448 dh155122 hostmap_t *ns_maplist; 397 0 stevel u_long *ns_bucketlen[2]; 398 7432 John u_int ns_orphans; 399 8624 Darren u_long ns_uncreate[2][2]; 400 0 stevel } natstat_t; 401 0 stevel 402 0 stevel typedef struct natlog { 403 7176 yx160601 i6addr_t nlg_origip; 404 7176 yx160601 i6addr_t nlg_outip; 405 7176 yx160601 i6addr_t nlg_inip; 406 7176 yx160601 u_short nlg_origport; 407 7176 yx160601 u_short nlg_outport; 408 7176 yx160601 u_short nlg_inport; 409 7176 yx160601 u_short nlg_type; 410 7176 yx160601 int nlg_rule; 411 7176 yx160601 U_QUAD_T nlg_pkts[2]; 412 7176 yx160601 U_QUAD_T nlg_bytes[2]; 413 7176 yx160601 u_char nlg_p; 414 7176 yx160601 int nlg_v; 415 0 stevel } natlog_t; 416 0 stevel 417 0 stevel 418 0 stevel #define NL_NEWMAP NAT_MAP 419 0 stevel #define NL_NEWRDR NAT_REDIRECT 420 0 stevel #define NL_NEWBIMAP NAT_BIMAP 421 0 stevel #define NL_NEWBLOCK NAT_MAPBLK 422 7432 John #define NL_DESTROY 0xfffc 423 0 stevel #define NL_CLONE 0xfffd 424 0 stevel #define NL_FLUSH 0xfffe 425 0 stevel #define NL_EXPIRE 0xffff 426 0 stevel 427 7176 yx160601 #define NAT_HASH_FN(k, l, m) (((k) + ((k) >> 12) + l) % (m)) 428 7176 yx160601 #define NAT_HASH_FN6(k, l, m) ((((u_32_t *)(k))[3] \ 429 7176 yx160601 + (((u_32_t *)(k))[3] >> 12) \ 430 7176 yx160601 + (((u_32_t *)(k))[2]) \ 431 7176 yx160601 + (((u_32_t *)(k))[2] >> 12) \ 432 7176 yx160601 + (((u_32_t *)(k))[1]) \ 433 7176 yx160601 + (((u_32_t *)(k))[1] >> 12) \ 434 7176 yx160601 + (((u_32_t *)(k))[0]) \ 435 7176 yx160601 + (((u_32_t *)(k))[0] >> 12) \ 436 7176 yx160601 + l) % (m)) 437 0 stevel 438 0 stevel #define LONG_SUM(in) (((in) & 0xffff) + ((in) >> 16)) 439 7176 yx160601 #define LONG_SUM6(in) (LONG_SUM(ntohl(((u_32_t *)(in))[0])) + \ 440 7176 yx160601 LONG_SUM(ntohl(((u_32_t *)(in))[1])) + \ 441 7176 yx160601 LONG_SUM(ntohl(((u_32_t *)(in))[2])) + \ 442 7176 yx160601 LONG_SUM(ntohl(((u_32_t *)(in))[3]))) 443 0 stevel 444 0 stevel #define CALC_SUMD(s1, s2, sd) { \ 445 0 stevel (s1) = ((s1) & 0xffff) + ((s1) >> 16); \ 446 0 stevel (s2) = ((s2) & 0xffff) + ((s2) >> 16); \ 447 0 stevel /* Do it twice */ \ 448 0 stevel (s1) = ((s1) & 0xffff) + ((s1) >> 16); \ 449 0 stevel (s2) = ((s2) & 0xffff) + ((s2) >> 16); \ 450 0 stevel /* Because ~1 == -2, We really need ~1 == -1 */ \ 451 0 stevel if ((s1) > (s2)) (s2)--; \ 452 0 stevel (sd) = (s2) - (s1); \ 453 0 stevel (sd) = ((sd) & 0xffff) + ((sd) >> 16); } 454 0 stevel 455 0 stevel #define NAT_SYSSPACE 0x80000000 456 0 stevel #define NAT_LOCKHELD 0x40000000 457 0 stevel 458 3448 dh155122 extern void fr_natsync __P((void *, ipf_stack_t *)); 459 7176 yx160601 extern void fr_nataddrsync __P((int, void *, void *, ipf_stack_t *)); 460 7176 yx160601 extern void fr_natifpsync __P((int, int, void *, char *, ipf_stack_t *)); 461 0 stevel 462 0 stevel #if defined(__OpenBSD__) 463 3448 dh155122 extern void nat_ifdetach __P((void *, ipf_stack_t *)); 464 0 stevel #endif 465 3448 dh155122 extern int fr_nat_ioctl __P((caddr_t, ioctlcmd_t, int, int, void *, ipf_stack_t *)); 466 3448 dh155122 extern int fr_natinit __P((ipf_stack_t *)); 467 0 stevel extern nat_t *nat_new __P((fr_info_t *, ipnat_t *, nat_t **, u_int, int)); 468 0 stevel extern nat_t *nat_outlookup __P((fr_info_t *, u_int, u_int, struct in_addr, 469 0 stevel struct in_addr)); 470 0 stevel extern void fix_datacksum __P((u_short *, u_32_t)); 471 0 stevel extern nat_t *nat_inlookup __P((fr_info_t *, u_int, u_int, struct in_addr, 472 0 stevel struct in_addr)); 473 0 stevel extern nat_t *nat_tnlookup __P((fr_info_t *, int)); 474 0 stevel extern nat_t *nat_maplookup __P((void *, u_int, struct in_addr, 475 0 stevel struct in_addr)); 476 3448 dh155122 extern nat_t *nat_lookupredir __P((natlookup_t *, ipf_stack_t *)); 477 0 stevel extern nat_t *nat_icmperrorlookup __P((fr_info_t *, int)); 478 0 stevel extern nat_t *nat_icmperror __P((fr_info_t *, u_int *, int)); 479 8170 John extern int nat_delete __P((struct nat *, int, ipf_stack_t *)); 480 3448 dh155122 extern int nat_insert __P((nat_t *, int, ipf_stack_t *)); 481 0 stevel 482 0 stevel extern int fr_checknatout __P((fr_info_t *, u_32_t *)); 483 0 stevel extern int fr_natout __P((fr_info_t *, nat_t *, int, u_32_t)); 484 0 stevel extern int fr_checknatin __P((fr_info_t *, u_32_t *)); 485 0 stevel extern int fr_natin __P((fr_info_t *, nat_t *, int, u_32_t)); 486 3448 dh155122 extern void fr_natunload __P((ipf_stack_t *)); 487 8624 Darren extern void nat_uncreate __P((fr_info_t *)); 488 3448 dh155122 extern void fr_natexpire __P((ipf_stack_t *)); 489 3448 dh155122 extern void nat_log __P((struct nat *, u_int, ipf_stack_t *)); 490 2958 dr146992 extern void fix_incksum __P((u_short *, u_32_t)); 491 2958 dr146992 extern void fix_outcksum __P((u_short *, u_32_t)); 492 3448 dh155122 extern void fr_ipnatderef __P((ipnat_t **, ipf_stack_t *)); 493 3448 dh155122 extern void fr_natderef __P((nat_t **, ipf_stack_t *)); 494 0 stevel extern u_short *nat_proto __P((fr_info_t *, nat_t *, u_int)); 495 0 stevel extern void nat_update __P((fr_info_t *, nat_t *, ipnat_t *)); 496 3448 dh155122 extern void fr_setnatqueue __P((nat_t *, int, ipf_stack_t *)); 497 5417 jojemann extern void fr_hostmapdel __P((hostmap_t **)); 498 11105 Alexandr #if SOLARIS2 >= 10 499 11105 Alexandr extern void fr_natifindexsync __P((void *, void *, ipf_stack_t *)); 500 11105 Alexandr #endif 501 0 stevel 502 7176 yx160601 extern nat_t *fr_natclone __P((fr_info_t *, nat_t *)); 503 7176 yx160601 extern void nat_delrdr __P((struct ipnat *)); 504 7176 yx160601 extern void nat_delnat __P((struct ipnat *)); 505 7176 yx160601 extern int nat_wildok __P((nat_t *, int, int, int, int)); 506 7176 yx160601 extern void nat_calc_chksum_diffs __P((nat_t *)); 507 7176 yx160601 508 7176 yx160601 #ifdef USE_INET6 509 7176 yx160601 extern void nat6_addnat __P((ipnat_t *, ipf_stack_t *)); 510 7176 yx160601 extern void nat6_addrdr __P((ipnat_t *, ipf_stack_t *)); 511 7176 yx160601 extern nat_t *nat6_new __P((fr_info_t *, ipnat_t *, nat_t **, u_int, int)); 512 7176 yx160601 extern nat_t *nat6_outlookup __P((fr_info_t *, u_int, u_int, 513 7176 yx160601 struct in6_addr *, struct in6_addr *)); 514 7176 yx160601 extern nat_t *nat6_inlookup __P((fr_info_t *, u_int, u_int, 515 7176 yx160601 struct in6_addr *, struct in6_addr *)); 516 7176 yx160601 extern nat_t *nat6_lookupredir __P((natlookup_t *, ipf_stack_t *)); 517 7176 yx160601 extern nat_t *nat6_icmperrorlookup __P((fr_info_t *, int)); 518 7176 yx160601 extern nat_t *nat6_icmperror __P((fr_info_t *, u_int *, int)); 519 7176 yx160601 extern int nat6_insert __P((nat_t *, int, ipf_stack_t *)); 520 7176 yx160601 extern int fr_checknat6out __P((fr_info_t *, u_32_t *)); 521 7176 yx160601 extern int fr_nat6out __P((fr_info_t *, nat_t *, int, u_32_t)); 522 7176 yx160601 extern int fr_checknat6in __P((fr_info_t *, u_32_t *)); 523 7176 yx160601 extern int fr_nat6in __P((fr_info_t *, nat_t *, int, u_32_t)); 524 7176 yx160601 #endif 525 7176 yx160601 526 0 stevel #endif /* __IP_NAT_H__ */ 527
Indexes created Thu Nov 26 06:25:39 UTC 2009
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