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 1.19 2004/12/21 02:54:15 hsu Exp $ 86 */ 87 88 #ifndef _NETINET_IN_PCB_H_ 89 #define _NETINET_IN_PCB_H_ 90 91 #include <sys/queue.h> 92 #include <sys/sysctl.h> 93 94 #include <net/route.h> 95 96 #define in6pcb inpcb /* for KAME src sync over BSD*'s */ 97 #define in6p_sp inp_sp /* for KAME src sync over BSD*'s */ 98 struct inpcbpolicy; 99 100 /* 101 * Common structure pcb for internet protocol implementation. 102 * Here are stored pointers to local and foreign host table 103 * entries, local and foreign socket numbers, and pointers 104 * up (to a socket structure) and down (to a protocol-specific) 105 * control block. 106 */ 107 LIST_HEAD(inpcbhead, inpcb); 108 LIST_HEAD(inpcbporthead, inpcbport); 109 typedef u_quad_t inp_gen_t; 110 111 struct inpcontainer { 112 struct inpcb *ic_inp; 113 LIST_ENTRY(inpcontainer) ic_list; 114 }; 115 LIST_HEAD(inpcontainerhead, inpcontainer); 116 117 /* 118 * PCB with AF_INET6 null bind'ed laddr can receive AF_INET input packet. 119 * So, AF_INET6 null laddr is also used as AF_INET null laddr, 120 * by utilize following structure. (At last, same as INRIA) 121 */ 122 struct in_addr_4in6 { 123 u_int32_t ia46_pad32[3]; 124 struct in_addr ia46_addr4; 125 }; 126 127 /* 128 * NOTE: ipv6 addrs should be 64-bit aligned, per RFC 2553. 129 * in_conninfo has some extra padding to accomplish this. 130 */ 131 struct in_endpoints { 132 u_int16_t ie_fport; /* foreign port */ 133 u_int16_t ie_lport; /* local port */ 134 /* protocol dependent part, local and foreign addr */ 135 union { 136 /* foreign host table entry */ 137 struct in_addr_4in6 ie46_foreign; 138 struct in6_addr ie6_foreign; 139 } ie_dependfaddr; 140 union { 141 /* local host table entry */ 142 struct in_addr_4in6 ie46_local; 143 struct in6_addr ie6_local; 144 } ie_dependladdr; 145 #define ie_faddr ie_dependfaddr.ie46_foreign.ia46_addr4 146 #define ie_laddr ie_dependladdr.ie46_local.ia46_addr4 147 #define ie6_faddr ie_dependfaddr.ie6_foreign 148 #define ie6_laddr ie_dependladdr.ie6_local 149 }; 150 151 /* 152 * XXX 153 * At some point struct route should possibly change to: 154 * struct rtentry *rt 155 * struct in_endpoints *ie; 156 */ 157 struct in_conninfo { 158 u_int8_t inc_flags; 159 u_int8_t inc_len; 160 u_int16_t inc_pad; /* XXX alignment for in_endpoints */ 161 /* protocol dependent part; cached route */ 162 struct in_endpoints inc_ie; 163 union { 164 /* placeholder for routing entry */ 165 struct route inc4_route; 166 struct route_in6 inc6_route; 167 } inc_dependroute; 168 }; 169 #define inc_isipv6 inc_flags /* temp compatibility */ 170 #define inc_fport inc_ie.ie_fport 171 #define inc_lport inc_ie.ie_lport 172 #define inc_faddr inc_ie.ie_faddr 173 #define inc_laddr inc_ie.ie_laddr 174 #define inc_route inc_dependroute.inc4_route 175 #define inc6_faddr inc_ie.ie6_faddr 176 #define inc6_laddr inc_ie.ie6_laddr 177 #define inc6_route inc_dependroute.inc6_route 178 179 /* 180 * NB: the zone allocator is type-stable EXCEPT FOR THE FIRST TWO LONGS 181 * of the structure. Therefore, it is important that the members in 182 * that position not contain any information which is required to be 183 * stable. 184 */ 185 struct icmp6_filter; 186 187 struct inpcb { 188 LIST_ENTRY(inpcb) inp_hash; /* hash list */ 189 LIST_ENTRY(inpcb) inp_list; /* list for all PCBs of this proto */ 190 u_int32_t inp_flow; 191 192 /* local and foreign ports, local and foreign addr */ 193 struct in_conninfo inp_inc; 194 195 void *inp_ppcb; /* pointer to per-protocol pcb */ 196 struct inpcbinfo *inp_pcbinfo; /* PCB list info */ 197 struct inpcbinfo *inp_cpcbinfo;/* back pointer for connection table */ 198 struct socket *inp_socket; /* back pointer to socket */ 199 /* list for this PCB's local port */ 200 int inp_flags; /* generic IP/datagram flags */ 201 202 struct inpcbpolicy *inp_sp; /* for IPSEC */ 203 u_char inp_vflag; 204 #define INP_IPV4 0x1 205 #define INP_IPV6 0x2 206 u_char inp_ip_ttl; /* time to live proto */ 207 u_char inp_ip_p; /* protocol proto */ 208 209 /* protocol dependent part; options */ 210 struct { 211 u_char inp4_ip_tos; /* type of service proto */ 212 struct mbuf *inp4_options; /* IP options */ 213 struct ip_moptions *inp4_moptions; /* IP multicast options */ 214 } inp_depend4; 215 #define inp_fport inp_inc.inc_fport 216 #define inp_lport inp_inc.inc_lport 217 #define inp_faddr inp_inc.inc_faddr 218 #define inp_laddr inp_inc.inc_laddr 219 #define inp_route inp_inc.inc_route 220 #define inp_ip_tos inp_depend4.inp4_ip_tos 221 #define inp_options inp_depend4.inp4_options 222 #define inp_moptions inp_depend4.inp4_moptions 223 struct { 224 /* IP options */ 225 struct mbuf *inp6_options; 226 /* IP6 options for outgoing packets */ 227 struct ip6_pktopts *inp6_outputopts; 228 /* IP multicast options */ 229 struct ip6_moptions *inp6_moptions; 230 /* ICMPv6 code type filter */ 231 struct icmp6_filter *inp6_icmp6filt; 232 /* IPV6_CHECKSUM setsockopt */ 233 int inp6_cksum; 234 u_short inp6_ifindex; 235 short inp6_hops; 236 u_int8_t inp6_hlim; 237 } inp_depend6; 238 LIST_ENTRY(inpcb) inp_portlist; 239 struct inpcbport *inp_phd; /* head of this list */ 240 inp_gen_t inp_gencnt; /* generation count of this instance */ 241 #define in6p_faddr inp_inc.inc6_faddr 242 #define in6p_laddr inp_inc.inc6_laddr 243 #define in6p_route inp_inc.inc6_route 244 #define in6p_ip6_hlim inp_depend6.inp6_hlim 245 #define in6p_hops inp_depend6.inp6_hops /* default hop limit */ 246 #define in6p_ip6_nxt inp_ip_p 247 #define in6p_flowinfo inp_flow 248 #define in6p_vflag inp_vflag 249 #define in6p_options inp_depend6.inp6_options 250 #define in6p_outputopts inp_depend6.inp6_outputopts 251 #define in6p_moptions inp_depend6.inp6_moptions 252 #define in6p_icmp6filt inp_depend6.inp6_icmp6filt 253 #define in6p_cksum inp_depend6.inp6_cksum 254 #define inp6_ifindex inp_depend6.inp6_ifindex 255 #define in6p_flags inp_flags /* for KAME src sync over BSD*'s */ 256 #define in6p_socket inp_socket /* for KAME src sync over BSD*'s */ 257 #define in6p_lport inp_lport /* for KAME src sync over BSD*'s */ 258 #define in6p_fport inp_fport /* for KAME src sync over BSD*'s */ 259 #define in6p_ppcb inp_ppcb /* for KAME src sync over BSD*'s */ 260 }; 261 /* 262 * The range of the generation count, as used in this implementation, 263 * is 9e19. We would have to create 300 billion connections per 264 * second for this number to roll over in a year. This seems sufficiently 265 * unlikely that we simply don't concern ourselves with that possibility. 266 */ 267 268 /* 269 * Interface exported to userland by various protocols which use 270 * inpcbs. Hack alert -- only define if struct xsocket is in scope. 271 */ 272 #ifdef _SYS_SOCKETVAR_H_ 273 struct xinpcb { 274 size_t xi_len; /* length of this structure */ 275 struct inpcb xi_inp; 276 struct xsocket xi_socket; 277 u_quad_t xi_alignment_hack; 278 }; 279 #endif /* _SYS_SOCKETVAR_H_ */ 280 281 struct inpcbport { 282 LIST_ENTRY(inpcbport) phd_hash; 283 struct inpcbhead phd_pcblist; 284 u_short phd_port; 285 }; 286 287 struct inpcbinfo { /* XXX documentation, prefixes */ 288 struct inpcbhead *hashbase; 289 u_long hashmask; 290 struct inpcbporthead *porthashbase; 291 u_long porthashmask; 292 struct inpcontainerhead *wildcardhashbase; 293 u_long wildcardhashmask; 294 struct inpcbhead pcblisthead; /* head of queue of active pcb's */ 295 u_short lastport; 296 u_short lastlow; 297 u_short lasthi; 298 struct vm_zone *ipi_zone; /* zone to allocate pcbs from */ 299 u_int ipi_count; /* number of pcbs in this list */ 300 u_quad_t ipi_gencnt; /* current generation count */ 301 int cpu; /* related protocol thread cpu or -1 */ 302 }; 303 304 305 #define INP_PCBCONNHASH(faddr, fport, laddr, lport, mask) \ 306 (((faddr) ^ ((faddr) >> 16) ^ (laddr) ^ ntohs((lport) ^ (fport))) & (mask)) 307 308 #define INP_PCBPORTHASH(lport, mask) (ntohs(lport) & (mask)) 309 310 #define INP_PCBWILDCARDHASH(lport, mask) (ntohs(lport) & (mask)) 311 312 /* flags in inp_flags: */ 313 #define INP_RECVOPTS 0x01 /* receive incoming IP options */ 314 #define INP_RECVRETOPTS 0x02 /* receive IP options for reply */ 315 #define INP_RECVDSTADDR 0x04 /* receive IP dst address */ 316 #define INP_HDRINCL 0x08 /* user supplies entire IP header */ 317 #define INP_HIGHPORT 0x10 /* user wants "high" port binding */ 318 #define INP_LOWPORT 0x20 /* user wants "low" port binding */ 319 #define INP_ANONPORT 0x40 /* port chosen for user */ 320 #define INP_RECVIF 0x80 /* receive incoming interface */ 321 #define INP_MTUDISC 0x100 /* user can do MTU discovery */ 322 #define INP_FAITH 0x200 /* accept FAITH'ed connections */ 323 #define INP_WILDCARD 0x400 /* wildcard match */ 324 #define INP_WILDCARD_MP 0x800 /* distributed wildcard match */ 325 #define INP_CONNECTED 0x1000 /* exact match */ 326 #define INP_WASBOUND_NOTANY 0x2000 /* was bound to non-null laddr */ 327 #define INP_PLACEMARKER 0x4000 /* skip this pcb, its a placemarker */ 328 329 #define IN6P_IPV6_V6ONLY 0x008000 /* restrict AF_INET6 socket for v6 */ 330 331 #define IN6P_PKTINFO 0x010000 /* receive IP6 dst and I/F */ 332 #define IN6P_HOPLIMIT 0x020000 /* receive hoplimit */ 333 #define IN6P_HOPOPTS 0x040000 /* receive hop-by-hop options */ 334 #define IN6P_DSTOPTS 0x080000 /* receive dst options after rthdr */ 335 #define IN6P_RTHDR 0x100000 /* receive routing header */ 336 #define IN6P_RTHDRDSTOPTS 0x200000 /* receive dstoptions before rthdr */ 337 #define IN6P_AUTOFLOWLABEL 0x800000 /* attach flowlabel automatically */ 338 339 #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\ 340 INP_RECVIF|\ 341 IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\ 342 IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\ 343 IN6P_AUTOFLOWLABEL) 344 #define INP_UNMAPPABLEOPTS (IN6P_HOPOPTS|IN6P_DSTOPTS|IN6P_RTHDR|\ 345 IN6P_AUTOFLOWLABEL) 346 347 /* for KAME src sync over BSD*'s */ 348 #define IN6P_HIGHPORT INP_HIGHPORT 349 #define IN6P_LOWPORT INP_LOWPORT 350 #define IN6P_ANONPORT INP_ANONPORT 351 #define IN6P_RECVIF INP_RECVIF 352 #define IN6P_MTUDISC INP_MTUDISC 353 #define IN6P_FAITH INP_FAITH 354 #define IN6P_CONTROLOPTS INP_CONTROLOPTS 355 /* 356 * socket AF version is {newer than,or include} 357 * actual datagram AF version 358 */ 359 360 #define INPLOOKUP_WILDCARD 1 361 #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb) 362 #define sotoin6pcb(so) sotoinpcb(so) /* for KAME src sync over BSD*'s */ 363 364 #define INP_SOCKAF(so) so->so_proto->pr_domain->dom_family 365 366 #define INP_CHECK_SOCKAF(so, af) (INP_SOCKAF(so) == af) 367 368 #ifdef _KERNEL 369 extern int ipport_lowfirstauto; 370 extern int ipport_lowlastauto; 371 extern int ipport_firstauto; 372 extern int ipport_lastauto; 373 extern int ipport_hifirstauto; 374 extern int ipport_hilastauto; 375 376 void in_pcbpurgeif0 (struct inpcb *, struct ifnet *); 377 void in_losing (struct inpcb *); 378 void in_rtchange (struct inpcb *, int); 379 void in_pcbinfo_init (struct inpcbinfo *); 380 int in_pcballoc (struct socket *, struct inpcbinfo *); 381 int in_pcbbind (struct inpcb *, struct sockaddr *, struct thread *); 382 int in_pcbconnect (struct inpcb *, struct sockaddr *, struct thread *); 383 void in_pcbdetach (struct inpcb *); 384 void in_pcbdisconnect (struct inpcb *); 385 void in_pcbinswildcardhash(struct inpcb *inp); 386 void in_pcbinswildcardhash_oncpu(struct inpcb *, struct inpcbinfo *); 387 void in_pcbinsconnhash(struct inpcb *inp); 388 int in_pcbinsporthash (struct inpcb *); 389 int in_pcbladdr (struct inpcb *, struct sockaddr *, 390 struct sockaddr_in **); 391 struct inpcb * 392 in_pcblookup_local (struct inpcbinfo *, 393 struct in_addr, u_int, int); 394 struct inpcb * 395 in_pcblookup_hash (struct inpcbinfo *, 396 struct in_addr, u_int, struct in_addr, u_int, 397 int, struct ifnet *); 398 void in_pcbnotifyall (struct inpcbhead *, struct in_addr, 399 int, void (*)(struct inpcb *, int)); 400 int in_setpeeraddr (struct socket *so, struct sockaddr **nam); 401 int in_setsockaddr (struct socket *so, struct sockaddr **nam); 402 void in_pcbremwildcardhash(struct inpcb *inp); 403 void in_pcbremwildcardhash_oncpu(struct inpcb *, struct inpcbinfo *); 404 void in_pcbremconnhash(struct inpcb *inp); 405 void in_pcbremlists (struct inpcb *inp); 406 int prison_xinpcb (struct thread *p, struct inpcb *inp); 407 408 int in_pcblist_global(SYSCTL_HANDLER_ARGS); 409 #endif /* _KERNEL */ 410 411 #endif /* !_NETINET_IN_PCB_H_ */ 412