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) 2004 Jeffrey M. Hsu. All rights reserved. 36 * 37 * License terms: all terms for the DragonFly license above plus the following: 38 * 39 * 4. All advertising materials mentioning features or use of this software 40 * must display the following acknowledgement: 41 * 42 * This product includes software developed by Jeffrey M. Hsu 43 * for the DragonFly Project. 44 * 45 * This requirement may be waived with permission from Jeffrey Hsu. 46 * This requirement will sunset and may be removed on July 8 2005, 47 * after which the standard DragonFly license (as shown above) will 48 * apply. 49 */ 50 51 /* 52 * Copyright (c) 1982, 1986, 1990, 1993 53 * The Regents of the University of California. All rights reserved. 54 * 55 * Redistribution and use in source and binary forms, with or without 56 * modification, are permitted provided that the following conditions 57 * are met: 58 * 1. Redistributions of source code must retain the above copyright 59 * notice, this list of conditions and the following disclaimer. 60 * 2. Redistributions in binary form must reproduce the above copyright 61 * notice, this list of conditions and the following disclaimer in the 62 * documentation and/or other materials provided with the distribution. 63 * 3. All advertising materials mentioning features or use of this software 64 * must display the following acknowledgement: 65 * This product includes software developed by the University of 66 * California, Berkeley and its contributors. 67 * 4. Neither the name of the University nor the names of its contributors 68 * may be used to endorse or promote products derived from this software 69 * without specific prior written permission. 70 * 71 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 72 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 73 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 74 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 75 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 76 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 77 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 78 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 79 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 80 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 81 * SUCH DAMAGE. 82 * 83 * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93 84 * $FreeBSD: src/sys/netinet/in_pcb.h,v 1.32.2.7 2003/01/24 05:11:34 sam Exp $ 85 * $DragonFly: src/sys/netinet/in_pcb.h,v 1.16 2004/08/11 02:36:22 dillon Exp $ 86 */ 87 88 #ifndef _NETINET_IN_PCB_H_ 89 #define _NETINET_IN_PCB_H_ 90 91 #include <sys/queue.h> 92 93 #include <net/route.h> 94 95 #define in6pcb inpcb /* for KAME src sync over BSD*'s */ 96 #define in6p_sp inp_sp /* for KAME src sync over BSD*'s */ 97 struct inpcbpolicy; 98 99 /* 100 * Common structure pcb for internet protocol implementation. 101 * Here are stored pointers to local and foreign host table 102 * entries, local and foreign socket numbers, and pointers 103 * up (to a socket structure) and down (to a protocol-specific) 104 * control block. 105 */ 106 LIST_HEAD(inpcbhead, inpcb); 107 LIST_HEAD(inpcbporthead, inpcbport); 108 typedef u_quad_t inp_gen_t; 109 110 struct inpcontainer { 111 struct inpcb *ic_inp; 112 LIST_ENTRY(inpcontainer) ic_list; 113 }; 114 LIST_HEAD(inpcontainerhead, inpcontainer); 115 116 /* 117 * PCB with AF_INET6 null bind'ed laddr can receive AF_INET input packet. 118 * So, AF_INET6 null laddr is also used as AF_INET null laddr, 119 * by utilize following structure. (At last, same as INRIA) 120 */ 121 struct in_addr_4in6 { 122 u_int32_t ia46_pad32[3]; 123 struct in_addr ia46_addr4; 124 }; 125 126 /* 127 * NOTE: ipv6 addrs should be 64-bit aligned, per RFC 2553. 128 * in_conninfo has some extra padding to accomplish this. 129 */ 130 struct in_endpoints { 131 u_int16_t ie_fport; /* foreign port */ 132 u_int16_t ie_lport; /* local port */ 133 /* protocol dependent part, local and foreign addr */ 134 union { 135 /* foreign host table entry */ 136 struct in_addr_4in6 ie46_foreign; 137 struct in6_addr ie6_foreign; 138 } ie_dependfaddr; 139 union { 140 /* local host table entry */ 141 struct in_addr_4in6 ie46_local; 142 struct in6_addr ie6_local; 143 } ie_dependladdr; 144 #define ie_faddr ie_dependfaddr.ie46_foreign.ia46_addr4 145 #define ie_laddr ie_dependladdr.ie46_local.ia46_addr4 146 #define ie6_faddr ie_dependfaddr.ie6_foreign 147 #define ie6_laddr ie_dependladdr.ie6_local 148 }; 149 150 /* 151 * XXX 152 * At some point struct route should possibly change to: 153 * struct rtentry *rt 154 * struct in_endpoints *ie; 155 */ 156 struct in_conninfo { 157 u_int8_t inc_flags; 158 u_int8_t inc_len; 159 u_int16_t inc_pad; /* XXX alignment for in_endpoints */ 160 /* protocol dependent part; cached route */ 161 struct in_endpoints inc_ie; 162 union { 163 /* placeholder for routing entry */ 164 struct route inc4_route; 165 struct route_in6 inc6_route; 166 } inc_dependroute; 167 }; 168 #define inc_isipv6 inc_flags /* temp compatibility */ 169 #define inc_fport inc_ie.ie_fport 170 #define inc_lport inc_ie.ie_lport 171 #define inc_faddr inc_ie.ie_faddr 172 #define inc_laddr inc_ie.ie_laddr 173 #define inc_route inc_dependroute.inc4_route 174 #define inc6_faddr inc_ie.ie6_faddr 175 #define inc6_laddr inc_ie.ie6_laddr 176 #define inc6_route inc_dependroute.inc6_route 177 178 /* 179 * NB: the zone allocator is type-stable EXCEPT FOR THE FIRST TWO LONGS 180 * of the structure. Therefore, it is important that the members in 181 * that position not contain any information which is required to be 182 * stable. 183 */ 184 struct icmp6_filter; 185 186 struct inpcb { 187 LIST_ENTRY(inpcb) inp_hash; /* hash list */ 188 LIST_ENTRY(inpcb) inp_list; /* list for all PCBs of this proto */ 189 u_int32_t inp_flow; 190 191 /* local and foreign ports, local and foreign addr */ 192 struct in_conninfo inp_inc; 193 194 caddr_t inp_ppcb; /* pointer to per-protocol pcb */ 195 struct inpcbinfo *inp_pcbinfo; /* PCB list info */ 196 struct inpcbinfo *inp_cpcbinfo;/* back pointer for connection table */ 197 struct socket *inp_socket; /* back pointer to socket */ 198 /* list for this PCB's local port */ 199 int inp_flags; /* generic IP/datagram flags */ 200 201 struct inpcbpolicy *inp_sp; /* for IPSEC */ 202 u_char inp_vflag; 203 #define INP_IPV4 0x1 204 #define INP_IPV6 0x2 205 u_char inp_ip_ttl; /* time to live proto */ 206 u_char inp_ip_p; /* protocol proto */ 207 208 /* protocol dependent part; options */ 209 struct { 210 u_char inp4_ip_tos; /* type of service proto */ 211 struct mbuf *inp4_options; /* IP options */ 212 struct ip_moptions *inp4_moptions; /* IP multicast options */ 213 } inp_depend4; 214 #define inp_fport inp_inc.inc_fport 215 #define inp_lport inp_inc.inc_lport 216 #define inp_faddr inp_inc.inc_faddr 217 #define inp_laddr inp_inc.inc_laddr 218 #define inp_route inp_inc.inc_route 219 #define inp_ip_tos inp_depend4.inp4_ip_tos 220 #define inp_options inp_depend4.inp4_options 221 #define inp_moptions inp_depend4.inp4_moptions 222 struct { 223 /* IP options */ 224 struct mbuf *inp6_options; 225 /* IP6 options for outgoing packets */ 226 struct ip6_pktopts *inp6_outputopts; 227 /* IP multicast options */ 228 struct ip6_moptions *inp6_moptions; 229 /* ICMPv6 code type filter */ 230 struct icmp6_filter *inp6_icmp6filt; 231 /* IPV6_CHECKSUM setsockopt */ 232 int inp6_cksum; 233 u_short inp6_ifindex; 234 short inp6_hops; 235 u_int8_t inp6_hlim; 236 } inp_depend6; 237 LIST_ENTRY(inpcb) inp_portlist; 238 struct inpcbport *inp_phd; /* head of this list */ 239 inp_gen_t inp_gencnt; /* generation count of this instance */ 240 #define in6p_faddr inp_inc.inc6_faddr 241 #define in6p_laddr inp_inc.inc6_laddr 242 #define in6p_route inp_inc.inc6_route 243 #define in6p_ip6_hlim inp_depend6.inp6_hlim 244 #define in6p_hops inp_depend6.inp6_hops /* default hop limit */ 245 #define in6p_ip6_nxt inp_ip_p 246 #define in6p_flowinfo inp_flow 247 #define in6p_vflag inp_vflag 248 #define in6p_options inp_depend6.inp6_options 249 #define in6p_outputopts inp_depend6.inp6_outputopts 250 #define in6p_moptions inp_depend6.inp6_moptions 251 #define in6p_icmp6filt inp_depend6.inp6_icmp6filt 252 #define in6p_cksum inp_depend6.inp6_cksum 253 #define inp6_ifindex inp_depend6.inp6_ifindex 254 #define in6p_flags inp_flags /* for KAME src sync over BSD*'s */ 255 #define in6p_socket inp_socket /* for KAME src sync over BSD*'s */ 256 #define in6p_lport inp_lport /* for KAME src sync over BSD*'s */ 257 #define in6p_fport inp_fport /* for KAME src sync over BSD*'s */ 258 #define in6p_ppcb inp_ppcb /* for KAME src sync over BSD*'s */ 259 }; 260 /* 261 * The range of the generation count, as used in this implementation, 262 * is 9e19. We would have to create 300 billion connections per 263 * second for this number to roll over in a year. This seems sufficiently 264 * unlikely that we simply don't concern ourselves with that possibility. 265 */ 266 267 /* 268 * Interface exported to userland by various protocols which use 269 * inpcbs. Hack alert -- only define if struct xsocket is in scope. 270 */ 271 #ifdef _SYS_SOCKETVAR_H_ 272 struct xinpcb { 273 size_t xi_len; /* length of this structure */ 274 struct inpcb xi_inp; 275 struct xsocket xi_socket; 276 u_quad_t xi_alignment_hack; 277 }; 278 279 struct xinpgen { 280 size_t xig_len; /* length of this structure */ 281 u_int xig_count; /* number of PCBs at this time */ 282 inp_gen_t xig_gen; /* generation count at this time */ 283 so_gen_t xig_sogen; /* socket generation count at this time */ 284 int xig_cpu; /* cpu containing additional info */ 285 }; 286 #endif /* _SYS_SOCKETVAR_H_ */ 287 288 struct inpcbport { 289 LIST_ENTRY(inpcbport) phd_hash; 290 struct inpcbhead phd_pcblist; 291 u_short phd_port; 292 }; 293 294 struct inpcbinfo { /* XXX documentation, prefixes */ 295 struct inpcbhead *hashbase; 296 u_long hashmask; 297 struct inpcbporthead *porthashbase; 298 u_long porthashmask; 299 struct inpcontainerhead *wildcardhashbase; 300 u_long wildcardhashmask; 301 struct inpcbhead pcblisthead; /* head of queue of active pcb's */ 302 u_short lastport; 303 u_short lastlow; 304 u_short lasthi; 305 struct vm_zone *ipi_zone; /* zone to allocate pcbs from */ 306 u_int ipi_count; /* number of pcbs in this list */ 307 u_quad_t ipi_gencnt; /* current generation count */ 308 int cpu; /* related protocol thread cpu or -1 */ 309 }; 310 311 312 #define INP_PCBCONNHASH(faddr, fport, laddr, lport, mask) \ 313 (((faddr) ^ ((faddr) >> 16) ^ (laddr) ^ ntohs((lport) ^ (fport))) & (mask)) 314 315 #define INP_PCBPORTHASH(lport, mask) (ntohs(lport) & (mask)) 316 317 #define INP_PCBWILDCARDHASH(lport, mask) (ntohs(lport) & (mask)) 318 319 /* flags in inp_flags: */ 320 #define INP_RECVOPTS 0x01 /* receive incoming IP options */ 321 #define INP_RECVRETOPTS 0x02 /* receive IP options for reply */ 322 #define INP_RECVDSTADDR 0x04 /* receive IP dst address */ 323 #define INP_HDRINCL 0x08 /* user supplies entire IP header */ 324 #define INP_HIGHPORT 0x10 /* user wants "high" port binding */ 325 #define INP_LOWPORT 0x20 /* user wants "low" port binding */ 326 #define INP_ANONPORT 0x40 /* port chosen for user */ 327 #define INP_RECVIF 0x80 /* receive incoming interface */ 328 #define INP_MTUDISC 0x100 /* user can do MTU discovery */ 329 #define INP_FAITH 0x200 /* accept FAITH'ed connections */ 330 #define INP_WILDCARD 0x400 /* wildcard match */ 331 #define INP_WILDCARD_MP 0x800 /* distributed wildcard match */ 332 #define INP_CONNECTED 0x1000 /* exact match */ 333 #define INP_WASBOUND_NOTANY 0x2000 /* was bound to non-null laddr */ 334 #define INP_PLACEMARKER 0x4000 /* skip this pcb, its a placemarker */ 335 336 #define IN6P_IPV6_V6ONLY 0x008000 /* restrict AF_INET6 socket for v6 */ 337 338 #define IN6P_PKTINFO 0x010000 /* receive IP6 dst and I/F */ 339 #define IN6P_HOPLIMIT 0x020000 /* receive hoplimit */ 340 #define IN6P_HOPOPTS 0x040000 /* receive hop-by-hop options */ 341 #define IN6P_DSTOPTS 0x080000 /* receive dst options after rthdr */ 342 #define IN6P_RTHDR 0x100000 /* receive routing header */ 343 #define IN6P_RTHDRDSTOPTS 0x200000 /* receive dstoptions before rthdr */ 344 #define IN6P_AUTOFLOWLABEL 0x800000 /* attach flowlabel automatically */ 345 346 #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\ 347 INP_RECVIF|\ 348 IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\ 349 IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\ 350 IN6P_AUTOFLOWLABEL) 351 #define INP_UNMAPPABLEOPTS (IN6P_HOPOPTS|IN6P_DSTOPTS|IN6P_RTHDR|\ 352 IN6P_AUTOFLOWLABEL) 353 354 /* for KAME src sync over BSD*'s */ 355 #define IN6P_HIGHPORT INP_HIGHPORT 356 #define IN6P_LOWPORT INP_LOWPORT 357 #define IN6P_ANONPORT INP_ANONPORT 358 #define IN6P_RECVIF INP_RECVIF 359 #define IN6P_MTUDISC INP_MTUDISC 360 #define IN6P_FAITH INP_FAITH 361 #define IN6P_CONTROLOPTS INP_CONTROLOPTS 362 /* 363 * socket AF version is {newer than,or include} 364 * actual datagram AF version 365 */ 366 367 #define INPLOOKUP_WILDCARD 1 368 #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb) 369 #define sotoin6pcb(so) sotoinpcb(so) /* for KAME src sync over BSD*'s */ 370 371 #define INP_SOCKAF(so) so->so_proto->pr_domain->dom_family 372 373 #define INP_CHECK_SOCKAF(so, af) (INP_SOCKAF(so) == af) 374 375 #ifdef _KERNEL 376 extern int ipport_lowfirstauto; 377 extern int ipport_lowlastauto; 378 extern int ipport_firstauto; 379 extern int ipport_lastauto; 380 extern int ipport_hifirstauto; 381 extern int ipport_hilastauto; 382 383 void in_pcbpurgeif0 (struct inpcb *, struct ifnet *); 384 void in_losing (struct inpcb *); 385 void in_rtchange (struct inpcb *, int); 386 void in_pcbinfo_init (struct inpcbinfo *); 387 int in_pcballoc (struct socket *, struct inpcbinfo *); 388 int in_pcbbind (struct inpcb *, struct sockaddr *, struct thread *); 389 int in_pcbconnect (struct inpcb *, struct sockaddr *, struct thread *); 390 void in_pcbdetach (struct inpcb *); 391 void in_pcbdisconnect (struct inpcb *); 392 void in_pcbinswildcardhash(struct inpcb *inp); 393 void in_pcbinswildcardhash_oncpu(struct inpcb *, struct inpcbinfo *); 394 void in_pcbinsconnhash(struct inpcb *inp); 395 int in_pcbinsporthash (struct inpcb *); 396 int in_pcbladdr (struct inpcb *, struct sockaddr *, 397 struct sockaddr_in **); 398 struct inpcb * 399 in_pcblookup_local (struct inpcbinfo *, 400 struct in_addr, u_int, int); 401 struct inpcb * 402 in_pcblookup_hash (struct inpcbinfo *, 403 struct in_addr, u_int, struct in_addr, u_int, 404 int, struct ifnet *); 405 void in_pcbnotifyall (struct inpcbhead *, struct in_addr, 406 int, void (*)(struct inpcb *, int)); 407 int in_setpeeraddr (struct socket *so, struct sockaddr **nam); 408 int in_setsockaddr (struct socket *so, struct sockaddr **nam); 409 void in_pcbremwildcardhash(struct inpcb *inp); 410 void in_pcbremwildcardhash_oncpu(struct inpcb *, struct inpcbinfo *); 411 void in_pcbremconnhash(struct inpcb *inp); 412 void in_pcbremlists (struct inpcb *inp); 413 int prison_xinpcb (struct thread *p, struct inpcb *inp); 414 #endif /* _KERNEL */ 415 416 #endif /* !_NETINET_IN_PCB_H_ */ 417