1 /* 2 * Copyright (c) 2004 Jeffrey M. Hsu. All rights reserved. 3 * Copyright (c) 2004 The DragonFly Project. All rights reserved. 4 * 5 * This code is derived from software contributed to The DragonFly Project 6 * by Jeffrey M. Hsu. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of The DragonFly Project nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific, prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 30 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1982, 1986, 1990, 1993 36 * The Regents of the University of California. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by the University of 49 * California, Berkeley and its contributors. 50 * 4. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93 67 * $FreeBSD: src/sys/netinet/in_pcb.h,v 1.32.2.7 2003/01/24 05:11:34 sam Exp $ 68 * $DragonFly: src/sys/netinet/in_pcb.h,v 1.24 2008/09/04 09:08:22 hasso Exp $ 69 */ 70 71 #ifndef _NETINET_IN_PCB_H_ 72 #define _NETINET_IN_PCB_H_ 73 74 #ifndef _SYS_QUEUE_H_ 75 #include <sys/queue.h> 76 #endif 77 #ifndef _SYS_SYSCTL_H_ 78 #include <sys/sysctl.h> 79 #endif 80 #ifndef _NETINET_IN_H_ 81 #include <netinet/in.h> 82 #endif 83 #ifndef _NET_ROUTE_H_ 84 #include <net/route.h> 85 #endif 86 87 #define in6pcb inpcb /* for KAME src sync over BSD*'s */ 88 #define in6p_sp inp_sp /* for KAME src sync over BSD*'s */ 89 struct inpcbpolicy; 90 91 /* 92 * Common structure pcb for internet protocol implementation. 93 * Here are stored pointers to local and foreign host table 94 * entries, local and foreign socket numbers, and pointers 95 * up (to a socket structure) and down (to a protocol-specific) 96 * control block. 97 */ 98 LIST_HEAD(inpcbhead, inpcb); 99 LIST_HEAD(inpcbporthead, inpcbport); 100 typedef u_quad_t inp_gen_t; 101 102 struct inpcontainer { 103 struct inpcb *ic_inp; 104 LIST_ENTRY(inpcontainer) ic_list; 105 }; 106 LIST_HEAD(inpcontainerhead, inpcontainer); 107 108 /* 109 * PCB with AF_INET6 null bind'ed laddr can receive AF_INET input packet. 110 * So, AF_INET6 null laddr is also used as AF_INET null laddr, 111 * by utilize following structure. (At last, same as INRIA) 112 */ 113 struct in_addr_4in6 { 114 u_int32_t ia46_pad32[3]; 115 struct in_addr ia46_addr4; 116 }; 117 118 /* 119 * NOTE: ipv6 addrs should be 64-bit aligned, per RFC 2553. 120 * in_conninfo has some extra padding to accomplish this. 121 */ 122 struct in_endpoints { 123 u_int16_t ie_fport; /* foreign port */ 124 u_int16_t ie_lport; /* local port */ 125 /* protocol dependent part, local and foreign addr */ 126 union { 127 /* foreign host table entry */ 128 struct in_addr_4in6 ie46_foreign; 129 struct in6_addr ie6_foreign; 130 } ie_dependfaddr; 131 union { 132 /* local host table entry */ 133 struct in_addr_4in6 ie46_local; 134 struct in6_addr ie6_local; 135 } ie_dependladdr; 136 #define ie_faddr ie_dependfaddr.ie46_foreign.ia46_addr4 137 #define ie_laddr ie_dependladdr.ie46_local.ia46_addr4 138 #define ie6_faddr ie_dependfaddr.ie6_foreign 139 #define ie6_laddr ie_dependladdr.ie6_local 140 }; 141 142 /* 143 * XXX 144 * At some point struct route should possibly change to: 145 * struct rtentry *rt 146 * struct in_endpoints *ie; 147 */ 148 struct in_conninfo { 149 u_int8_t inc_flags; 150 u_int8_t inc_len; 151 u_int16_t inc_pad; /* XXX alignment for in_endpoints */ 152 /* protocol dependent part; cached route */ 153 struct in_endpoints inc_ie; 154 union { 155 /* placeholder for routing entry */ 156 struct route inc4_route; 157 struct route_in6 inc6_route; 158 } inc_dependroute; 159 }; 160 #define inc_isipv6 inc_flags /* temp compatibility */ 161 #define inc_fport inc_ie.ie_fport 162 #define inc_lport inc_ie.ie_lport 163 #define inc_faddr inc_ie.ie_faddr 164 #define inc_laddr inc_ie.ie_laddr 165 #define inc_route inc_dependroute.inc4_route 166 #define inc6_faddr inc_ie.ie6_faddr 167 #define inc6_laddr inc_ie.ie6_laddr 168 #define inc6_route inc_dependroute.inc6_route 169 170 /* 171 * NB: the zone allocator is type-stable EXCEPT FOR THE FIRST TWO LONGS 172 * of the structure. Therefore, it is important that the members in 173 * that position not contain any information which is required to be 174 * stable. 175 */ 176 struct icmp6_filter; 177 178 struct inpcb { 179 LIST_ENTRY(inpcb) inp_hash; /* hash list */ 180 LIST_ENTRY(inpcb) inp_list; /* list for all PCBs of this proto */ 181 u_int32_t inp_flow; 182 183 /* local and foreign ports, local and foreign addr */ 184 struct in_conninfo inp_inc; 185 186 void *inp_ppcb; /* pointer to per-protocol pcb */ 187 struct inpcbinfo *inp_pcbinfo; /* PCB list info */ 188 struct inpcbinfo *inp_cpcbinfo;/* back pointer for connection table */ 189 struct socket *inp_socket; /* back pointer to socket */ 190 /* list for this PCB's local port */ 191 int inp_flags; /* generic IP/datagram flags */ 192 193 struct inpcbpolicy *inp_sp; /* for IPSEC */ 194 u_char inp_vflag; 195 #define INP_IPV4 0x1 196 #define INP_IPV6 0x2 197 u_char inp_ip_ttl; /* time to live proto */ 198 u_char inp_ip_p; /* protocol proto */ 199 u_char inp_ip_minttl; /* minimum TTL or drop */ 200 201 /* protocol dependent part; options */ 202 struct { 203 u_char inp4_ip_tos; /* type of service proto */ 204 struct mbuf *inp4_options; /* IP options */ 205 struct ip_moptions *inp4_moptions; /* IP multicast options */ 206 } inp_depend4; 207 #define inp_fport inp_inc.inc_fport 208 #define inp_lport inp_inc.inc_lport 209 #define inp_faddr inp_inc.inc_faddr 210 #define inp_laddr inp_inc.inc_laddr 211 #define inp_route inp_inc.inc_route 212 #define inp_ip_tos inp_depend4.inp4_ip_tos 213 #define inp_options inp_depend4.inp4_options 214 #define inp_moptions inp_depend4.inp4_moptions 215 struct { 216 /* IP options */ 217 struct mbuf *inp6_options; 218 /* IP6 options for outgoing packets */ 219 struct ip6_pktopts *inp6_outputopts; 220 /* IP multicast options */ 221 struct ip6_moptions *inp6_moptions; 222 /* ICMPv6 code type filter */ 223 struct icmp6_filter *inp6_icmp6filt; 224 /* IPV6_CHECKSUM setsockopt */ 225 int inp6_cksum; 226 u_short inp6_ifindex; 227 short inp6_hops; 228 u_int8_t inp6_hlim; 229 } inp_depend6; 230 LIST_ENTRY(inpcb) inp_portlist; 231 struct inpcbport *inp_phd; /* head of this list */ 232 inp_gen_t inp_gencnt; /* generation count of this instance */ 233 #define in6p_faddr inp_inc.inc6_faddr 234 #define in6p_laddr inp_inc.inc6_laddr 235 #define in6p_route inp_inc.inc6_route 236 #define in6p_ip6_hlim inp_depend6.inp6_hlim 237 #define in6p_hops inp_depend6.inp6_hops /* default hop limit */ 238 #define in6p_ip6_nxt inp_ip_p 239 #define in6p_flowinfo inp_flow 240 #define in6p_vflag inp_vflag 241 #define in6p_options inp_depend6.inp6_options 242 #define in6p_outputopts inp_depend6.inp6_outputopts 243 #define in6p_moptions inp_depend6.inp6_moptions 244 #define in6p_icmp6filt inp_depend6.inp6_icmp6filt 245 #define in6p_cksum inp_depend6.inp6_cksum 246 #define inp6_ifindex inp_depend6.inp6_ifindex 247 #define in6p_flags inp_flags /* for KAME src sync over BSD*'s */ 248 #define in6p_socket inp_socket /* for KAME src sync over BSD*'s */ 249 #define in6p_lport inp_lport /* for KAME src sync over BSD*'s */ 250 #define in6p_fport inp_fport /* for KAME src sync over BSD*'s */ 251 #define in6p_ppcb inp_ppcb /* for KAME src sync over BSD*'s */ 252 }; 253 /* 254 * The range of the generation count, as used in this implementation, 255 * is 9e19. We would have to create 300 billion connections per 256 * second for this number to roll over in a year. This seems sufficiently 257 * unlikely that we simply don't concern ourselves with that possibility. 258 */ 259 260 /* 261 * Interface exported to userland by various protocols which use 262 * inpcbs. Hack alert -- only define if struct xsocket is in scope. 263 */ 264 #ifdef _SYS_SOCKETVAR_H_ 265 struct xinpcb { 266 size_t xi_len; /* length of this structure */ 267 struct inpcb xi_inp; 268 struct xsocket xi_socket; 269 u_quad_t xi_alignment_hack; 270 }; 271 #endif /* _SYS_SOCKETVAR_H_ */ 272 273 struct inpcbport { 274 LIST_ENTRY(inpcbport) phd_hash; 275 struct inpcbhead phd_pcblist; 276 u_short phd_port; 277 }; 278 279 struct inpcbinfo { /* XXX documentation, prefixes */ 280 struct inpcbhead *hashbase; 281 u_long hashmask; 282 struct inpcbporthead *porthashbase; 283 u_long porthashmask; 284 struct inpcontainerhead *wildcardhashbase; 285 u_long wildcardhashmask; 286 struct inpcbhead pcblisthead; /* head of queue of active pcb's */ 287 u_short lastport; 288 u_short lastlow; 289 u_short lasthi; 290 size_t ipi_size; /* allocation size for pcbs */ 291 u_int ipi_count; /* number of pcbs in this list */ 292 u_quad_t ipi_gencnt; /* current generation count */ 293 int cpu; /* related protocol thread cpu or -1 */ 294 }; 295 296 297 #define INP_PCBCONNHASH(faddr, fport, laddr, lport, mask) \ 298 (((faddr) ^ ((faddr) >> 16) ^ (laddr) ^ ntohs((lport) ^ (fport))) & (mask)) 299 300 #define INP_PCBPORTHASH(lport, mask) (ntohs(lport) & (mask)) 301 302 #define INP_PCBWILDCARDHASH(lport, mask) (ntohs(lport) & (mask)) 303 304 /* flags in inp_flags: */ 305 #define INP_RECVOPTS 0x01 /* receive incoming IP options */ 306 #define INP_RECVRETOPTS 0x02 /* receive IP options for reply */ 307 #define INP_RECVDSTADDR 0x04 /* receive IP dst address */ 308 #define INP_HDRINCL 0x08 /* user supplies entire IP header */ 309 #define INP_HIGHPORT 0x10 /* user wants "high" port binding */ 310 #define INP_LOWPORT 0x20 /* user wants "low" port binding */ 311 #define INP_ANONPORT 0x40 /* port chosen for user */ 312 #define INP_RECVIF 0x80 /* receive incoming interface */ 313 #define INP_MTUDISC 0x100 /* user can do MTU discovery */ 314 #define INP_FAITH 0x200 /* accept FAITH'ed connections */ 315 #define INP_WILDCARD 0x400 /* wildcard match */ 316 #define INP_WILDCARD_MP 0x800 /* distributed wildcard match */ 317 #define INP_CONNECTED 0x1000 /* exact match */ 318 #define INP_WASBOUND_NOTANY 0x2000 /* was bound to non-null laddr */ 319 #define INP_PLACEMARKER 0x4000 /* skip this pcb, its a placemarker */ 320 321 #define IN6P_IPV6_V6ONLY 0x008000 /* restrict AF_INET6 socket for v6 */ 322 323 #define IN6P_PKTINFO 0x010000 /* receive IP6 dst and I/F */ 324 #define IN6P_HOPLIMIT 0x020000 /* receive hoplimit */ 325 #define IN6P_HOPOPTS 0x040000 /* receive hop-by-hop options */ 326 #define IN6P_DSTOPTS 0x080000 /* receive dst options after rthdr */ 327 #define IN6P_RTHDR 0x100000 /* receive routing header */ 328 #define IN6P_RTHDRDSTOPTS 0x200000 /* receive dstoptions before rthdr */ 329 #define IN6P_AUTOFLOWLABEL 0x800000 /* attach flowlabel automatically */ 330 /* 331 * RFC3542 Definition 332 */ 333 #define IN6P_TCLASS 0x400000 /* receive traffic class value */ 334 #define IN6P_RFC2292 0x40000000 /* used RFC2292 API on the socket */ 335 #define IN6P_MTU 0x80000000 /* receive path MTU */ 336 337 #define INP_RECVTTL 0x80000000 /* receive incoming IP TTL */ 338 339 #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\ 340 INP_RECVIF|INP_RECVTTL|\ 341 IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\ 342 IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\ 343 IN6P_TCLASS|IN6P_AUTOFLOWLABEL|IN6P_RFC2292|\ 344 IN6P_MTU) 345 346 #define INP_UNMAPPABLEOPTS (IN6P_HOPOPTS|IN6P_DSTOPTS|IN6P_RTHDR|\ 347 IN6P_TCLASS|IN6P_AUTOFLOWLABEL) 348 349 /* for KAME src sync over BSD*'s */ 350 #define IN6P_HIGHPORT INP_HIGHPORT 351 #define IN6P_LOWPORT INP_LOWPORT 352 #define IN6P_ANONPORT INP_ANONPORT 353 #define IN6P_RECVIF INP_RECVIF 354 #define IN6P_MTUDISC INP_MTUDISC 355 #define IN6P_FAITH INP_FAITH 356 #define IN6P_CONTROLOPTS INP_CONTROLOPTS 357 /* 358 * socket AF version is {newer than,or include} 359 * actual datagram AF version 360 */ 361 362 #define INPLOOKUP_WILDCARD 1 363 #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb) 364 #define sotoin6pcb(so) sotoinpcb(so) /* for KAME src sync over BSD*'s */ 365 366 #define INP_SOCKAF(so) so->so_proto->pr_domain->dom_family 367 368 #define INP_CHECK_SOCKAF(so, af) (INP_SOCKAF(so) == af) 369 370 #ifdef _KERNEL 371 extern int ipport_lowfirstauto; 372 extern int ipport_lowlastauto; 373 extern int ipport_firstauto; 374 extern int ipport_lastauto; 375 extern int ipport_hifirstauto; 376 extern int ipport_hilastauto; 377 378 void in_pcbpurgeif0 (struct inpcb *, struct ifnet *); 379 void in_losing (struct inpcb *); 380 void in_rtchange (struct inpcb *, int); 381 void in_pcbinfo_init (struct inpcbinfo *); 382 int in_pcballoc (struct socket *, struct inpcbinfo *); 383 int in_pcbbind (struct inpcb *, struct sockaddr *, struct thread *); 384 int in_pcbconnect (struct inpcb *, struct sockaddr *, struct thread *); 385 void in_pcbdetach (struct inpcb *); 386 void in_pcbdisconnect (struct inpcb *); 387 void in_pcbinswildcardhash(struct inpcb *inp); 388 void in_pcbinswildcardhash_oncpu(struct inpcb *, struct inpcbinfo *); 389 void in_pcbinsconnhash(struct inpcb *inp); 390 int in_pcbinsporthash (struct inpcb *); 391 int in_pcbladdr (struct inpcb *, struct sockaddr *, 392 struct sockaddr_in **, struct thread *); 393 struct inpcb * 394 in_pcblookup_local (struct inpcbinfo *, struct in_addr, u_int, int, 395 struct ucred *); 396 struct inpcb * 397 in_pcblookup_hash (struct inpcbinfo *, 398 struct in_addr, u_int, struct in_addr, u_int, 399 int, struct ifnet *); 400 void in_pcbnotifyall (struct inpcbhead *, struct in_addr, 401 int, void (*)(struct inpcb *, int)); 402 int in_setpeeraddr (struct socket *so, struct sockaddr **nam); 403 int in_setsockaddr (struct socket *so, struct sockaddr **nam); 404 void in_pcbremwildcardhash(struct inpcb *inp); 405 void in_pcbremwildcardhash_oncpu(struct inpcb *, struct inpcbinfo *); 406 void in_pcbremconnhash(struct inpcb *inp); 407 void in_pcbremlists (struct inpcb *inp); 408 int prison_xinpcb (struct thread *p, struct inpcb *inp); 409 410 int in_pcblist_global(SYSCTL_HANDLER_ARGS); 411 #endif /* _KERNEL */ 412 413 #endif /* !_NETINET_IN_PCB_H_ */ 414