2 * Copyright (c) 2004 Jeffrey M. Hsu. All rights reserved.
3 * Copyright (c) 2004 The DragonFly Project. All rights reserved.
5 * This code is derived from software contributed to The DragonFly Project
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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39 * modification, are permitted provided that the following conditions
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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 $
71 #ifndef _NETINET_IN_PCB_H_
72 #define _NETINET_IN_PCB_H_
75 #include <sys/queue.h>
77 #ifndef _SYS_SYSCTL_H_
78 #include <sys/sysctl.h>
80 #ifndef _NETINET_IN_H_
81 #include <netinet/in.h>
84 #include <net/route.h>
87 #define in6pcb inpcb /* for KAME src sync over BSD*'s */
88 #define in6p_sp inp_sp /* for KAME src sync over BSD*'s */
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)
98 LIST_HEAD(inpcbhead, inpcb);
99 LIST_HEAD(inpcbporthead, inpcbport);
100 typedef u_quad_t inp_gen_t;
102 struct inpcontainer {
103 struct inpcb *ic_inp;
104 LIST_ENTRY(inpcontainer) ic_list;
106 LIST_HEAD(inpcontainerhead, inpcontainer);
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)
113 struct in_addr_4in6 {
114 u_int32_t ia46_pad32[3];
115 struct in_addr ia46_addr4;
118 union in_dependaddr {
119 struct in_addr_4in6 id46_addr;
120 struct in6_addr id6_addr;
124 * NOTE: ipv6 addrs should be 64-bit aligned, per RFC 2553.
125 * in_conninfo has some extra padding to accomplish this.
127 struct in_endpoints {
128 u_int16_t ie_fport; /* foreign port */
129 u_int16_t ie_lport; /* local port */
130 /* protocol dependent part, local and foreign addr */
131 union in_dependaddr ie_dependfaddr; /* foreign host table entry */
132 union in_dependaddr ie_dependladdr; /* local host table entry */
133 #define ie_faddr ie_dependfaddr.id46_addr.ia46_addr4
134 #define ie_laddr ie_dependladdr.id46_addr.ia46_addr4
135 #define ie6_faddr ie_dependfaddr.id6_addr
136 #define ie6_laddr ie_dependladdr.id6_addr
139 struct inp_localgroup {
140 LIST_ENTRY(inp_localgroup) il_list;
145 union in_dependaddr il_dependladdr;
146 #define il_laddr il_dependladdr.id46_addr.ia46_addr4
147 #define il6_laddr il_dependladdr.id6_addr
148 int il_inpsiz; /* size of il_inp[] */
149 int il_inpcnt; /* # of elem in il_inp[] */
150 struct inpcb *il_inp[];
152 LIST_HEAD(inp_localgrphead, inp_localgroup);
156 * At some point struct route should possibly change to:
158 * struct in_endpoints *ie;
163 u_int16_t inc_pad; /* XXX alignment for in_endpoints */
164 /* protocol dependent part; cached route */
165 struct in_endpoints inc_ie;
167 /* placeholder for routing entry */
168 struct route inc4_route;
169 struct route_in6 inc6_route;
172 #define inc_isipv6 inc_flags /* temp compatibility */
173 #define inc_fport inc_ie.ie_fport
174 #define inc_lport inc_ie.ie_lport
175 #define inc_faddr inc_ie.ie_faddr
176 #define inc_laddr inc_ie.ie_laddr
177 #define inc_route inc_dependroute.inc4_route
178 #define inc6_faddr inc_ie.ie6_faddr
179 #define inc6_laddr inc_ie.ie6_laddr
180 #define inc6_route inc_dependroute.inc6_route
183 * NB: the zone allocator is type-stable EXCEPT FOR THE FIRST TWO LONGS
184 * of the structure. Therefore, it is important that the members in
185 * that position not contain any information which is required to be
191 LIST_ENTRY(inpcb) inp_hash; /* hash list */
192 LIST_ENTRY(inpcb) inp_list; /* list for all PCBs of this proto */
195 /* local and foreign ports, local and foreign addr */
196 struct in_conninfo inp_inc;
198 void *inp_ppcb; /* pointer to per-protocol pcb */
199 struct inpcbinfo *inp_pcbinfo; /* PCB list info */
200 struct inpcbinfo *inp_cpcbinfo;/* back pointer for connection table */
201 struct socket *inp_socket; /* back pointer to socket */
202 /* list for this PCB's local port */
203 int inp_flags; /* generic IP/datagram flags */
205 struct inpcbpolicy *inp_sp; /* for IPSEC */
209 u_char inp_ip_ttl; /* time to live proto */
210 u_char inp_ip_p; /* protocol proto */
211 u_char inp_ip_minttl; /* minimum TTL or drop */
213 /* protocol dependent part; options */
215 u_char inp4_ip_tos; /* type of service proto */
216 struct mbuf *inp4_options; /* IP options */
217 struct ip_moptions *inp4_moptions; /* IP multicast options */
219 #define inp_fport inp_inc.inc_fport
220 #define inp_lport inp_inc.inc_lport
221 #define inp_faddr inp_inc.inc_faddr
222 #define inp_laddr inp_inc.inc_laddr
223 #define inp_route inp_inc.inc_route
224 #define inp_ip_tos inp_depend4.inp4_ip_tos
225 #define inp_options inp_depend4.inp4_options
226 #define inp_moptions inp_depend4.inp4_moptions
229 struct mbuf *inp6_options;
230 /* IP6 options for outgoing packets */
231 struct ip6_pktopts *inp6_outputopts;
232 /* IP multicast options */
233 struct ip6_moptions *inp6_moptions;
234 /* ICMPv6 code type filter */
235 struct icmp6_filter *inp6_icmp6filt;
236 /* IPV6_CHECKSUM setsockopt */
238 u_short inp6_ifindex;
242 LIST_ENTRY(inpcb) inp_portlist;
243 struct inpcbport *inp_phd; /* head of this list */
244 inp_gen_t inp_gencnt; /* generation count of this instance */
245 #define in6p_faddr inp_inc.inc6_faddr
246 #define in6p_laddr inp_inc.inc6_laddr
247 #define in6p_route inp_inc.inc6_route
248 #define in6p_ip6_hlim inp_depend6.inp6_hlim
249 #define in6p_hops inp_depend6.inp6_hops /* default hop limit */
250 #define in6p_ip6_nxt inp_ip_p
251 #define in6p_flowinfo inp_flow
252 #define in6p_vflag inp_vflag
253 #define in6p_options inp_depend6.inp6_options
254 #define in6p_outputopts inp_depend6.inp6_outputopts
255 #define in6p_moptions inp_depend6.inp6_moptions
256 #define in6p_icmp6filt inp_depend6.inp6_icmp6filt
257 #define in6p_cksum inp_depend6.inp6_cksum
258 #define inp6_ifindex inp_depend6.inp6_ifindex
259 #define in6p_flags inp_flags /* for KAME src sync over BSD*'s */
260 #define in6p_socket inp_socket /* for KAME src sync over BSD*'s */
261 #define in6p_lport inp_lport /* for KAME src sync over BSD*'s */
262 #define in6p_fport inp_fport /* for KAME src sync over BSD*'s */
263 #define in6p_ppcb inp_ppcb /* for KAME src sync over BSD*'s */
268 * The range of the generation count, as used in this implementation,
269 * is 9e19. We would have to create 300 billion connections per
270 * second for this number to roll over in a year. This seems sufficiently
271 * unlikely that we simply don't concern ourselves with that possibility.
275 * Interface exported to userland by various protocols which use
276 * inpcbs. Hack alert -- only define if struct xsocket is in scope.
278 #ifdef _SYS_SOCKETVAR_H_
280 size_t xi_len; /* length of this structure */
282 struct xsocket xi_socket;
283 u_quad_t xi_alignment_hack;
285 #endif /* _SYS_SOCKETVAR_H_ */
288 LIST_ENTRY(inpcbport) phd_hash;
289 struct inpcbhead phd_pcblist;
295 struct inpcbinfo { /* XXX documentation, prefixes */
296 struct inpcbhead *hashbase;
298 struct inpcbporthead *porthashbase;
300 struct lwkt_token *porttoken; /* if porthashbase is shared */
301 struct inpcbport *portsave; /* port allocation cache */
302 struct inpcontainerhead *wildcardhashbase;
303 u_long wildcardhashmask;
304 struct inp_localgrphead *localgrphashbase;
305 u_long localgrphashmask;
306 struct inpcbhead pcblisthead; /* head of queue of active pcb's */
310 size_t ipi_size; /* allocation size for pcbs */
311 u_int ipi_count; /* number of pcbs in this list */
312 u_quad_t ipi_gencnt; /* current generation count */
313 int cpu; /* related protocol thread cpu or -1 */
317 #define INP_PCBCONNHASH(faddr, fport, laddr, lport, mask) \
318 (((faddr) ^ ((faddr) >> 16) ^ (laddr) ^ ntohs((lport) ^ (fport))) & (mask))
320 #define INP_PCBPORTHASH(lport, mask) (ntohs(lport) & (mask))
322 #define INP_PCBWILDCARDHASH(lport, mask) (ntohs(lport) & (mask))
324 #define INP_PCBLOCALGRPHASH(lport, mask) (ntohs(lport) & (mask))
326 /* flags in inp_flags: */
327 #define INP_RECVOPTS 0x01 /* receive incoming IP options */
328 #define INP_RECVRETOPTS 0x02 /* receive IP options for reply */
329 #define INP_RECVDSTADDR 0x04 /* receive IP dst address */
330 #define INP_HDRINCL 0x08 /* user supplies entire IP header */
331 #define INP_HIGHPORT 0x10 /* user wants "high" port binding */
332 #define INP_LOWPORT 0x20 /* user wants "low" port binding */
333 #define INP_ANONPORT 0x40 /* port chosen for user */
334 #define INP_RECVIF 0x80 /* receive incoming interface */
335 #define INP_MTUDISC 0x100 /* user can do MTU discovery */
336 #define INP_FAITH 0x200 /* accept FAITH'ed connections */
337 #define INP_WILDCARD 0x400 /* wildcard match */
338 #define INP_WILDCARD_MP 0x800 /* distributed wildcard match */
339 #define INP_CONNECTED 0x1000 /* exact match */
340 #define INP_WASBOUND_NOTANY 0x2000 /* was bound to non-null laddr */
341 #define INP_PLACEMARKER 0x4000 /* skip this pcb, its a placemarker */
343 #define IN6P_IPV6_V6ONLY 0x008000 /* restrict AF_INET6 socket for v6 */
345 #define IN6P_PKTINFO 0x010000 /* receive IP6 dst and I/F */
346 #define IN6P_HOPLIMIT 0x020000 /* receive hoplimit */
347 #define IN6P_HOPOPTS 0x040000 /* receive hop-by-hop options */
348 #define IN6P_DSTOPTS 0x080000 /* receive dst options after rthdr */
349 #define IN6P_RTHDR 0x100000 /* receive routing header */
350 #define IN6P_RTHDRDSTOPTS 0x200000 /* receive dstoptions before rthdr */
351 #define IN6P_AUTOFLOWLABEL 0x800000 /* attach flowlabel automatically */
355 #define IN6P_TCLASS 0x400000 /* receive traffic class value */
356 #define IN6P_RFC2292 0x40000000 /* used RFC2292 API on the socket */
357 #define IN6P_MTU 0x80000000 /* receive path MTU */
359 #define INP_RECVTTL 0x80000000 /* receive incoming IP TTL */
361 #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\
362 INP_RECVIF|INP_RECVTTL|\
363 IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\
364 IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\
365 IN6P_TCLASS|IN6P_AUTOFLOWLABEL|IN6P_RFC2292|\
368 #define INP_UNMAPPABLEOPTS (IN6P_HOPOPTS|IN6P_DSTOPTS|IN6P_RTHDR|\
369 IN6P_TCLASS|IN6P_AUTOFLOWLABEL)
371 /* for KAME src sync over BSD*'s */
372 #define IN6P_HIGHPORT INP_HIGHPORT
373 #define IN6P_LOWPORT INP_LOWPORT
374 #define IN6P_ANONPORT INP_ANONPORT
375 #define IN6P_RECVIF INP_RECVIF
376 #define IN6P_MTUDISC INP_MTUDISC
377 #define IN6P_FAITH INP_FAITH
378 #define IN6P_CONTROLOPTS INP_CONTROLOPTS
380 * socket AF version is {newer than,or include}
381 * actual datagram AF version
384 #define INPLOOKUP_WILDCARD 1
385 #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb)
386 #define sotoin6pcb(so) sotoinpcb(so) /* for KAME src sync over BSD*'s */
388 /* macros for handling bitmap of ports not to allocate dynamically */
389 #define DP_MAPBITS (sizeof(u_int32_t) * NBBY)
390 #define DP_MAPSIZE (howmany(65536, DP_MAPBITS))
391 #define DP_SET(m, p) ((m)[(p) / DP_MAPBITS] |= (1 << ((p) % DP_MAPBITS)))
392 #define DP_CLR(m, p) ((m)[(p) / DP_MAPBITS] &= ~(1 << ((p) % DP_MAPBITS)))
393 #define DP_ISSET(m, p) ((m)[(p) / DP_MAPBITS] & (1 << ((p) % DP_MAPBITS)))
395 /* default values for baddynamicports [see ip_init()] */
396 #define DEFBADDYNAMICPORTS_TCP { \
397 587, 749, 750, 751, 871, 2049, \
398 6000, 6001, 6002, 6003, 6004, 6005, 6006, 6007, 6008, 6009, 6010, \
400 #define DEFBADDYNAMICPORTS_UDP { 623, 664, 749, 750, 751, 2049, 0 }
402 struct baddynamicports {
403 u_int32_t tcp[DP_MAPSIZE];
404 u_int32_t udp[DP_MAPSIZE];
408 #define INP_SOCKAF(so) so->so_proto->pr_domain->dom_family
410 #define INP_CHECK_SOCKAF(so, af) (INP_SOCKAF(so) == af)
413 extern int ipport_lowfirstauto;
414 extern int ipport_lowlastauto;
415 extern int ipport_firstauto;
416 extern int ipport_lastauto;
417 extern int ipport_hifirstauto;
418 extern int ipport_hilastauto;
423 void in_pcbpurgeif0 (struct inpcb *, struct ifnet *);
424 void in_losing (struct inpcb *);
425 void in_rtchange (struct inpcb *, int);
426 void in_pcbinfo_init (struct inpcbinfo *);
427 int in_pcballoc (struct socket *, struct inpcbinfo *);
428 void in_pcbunlink (struct inpcb *, struct inpcbinfo *);
429 void in_pcblink (struct inpcb *, struct inpcbinfo *);
430 int in_pcbbind (struct inpcb *, struct sockaddr *, struct thread *);
431 int in_pcbconn_bind(struct inpcb *, const struct sockaddr *,
433 int in_pcbconnect (struct inpcb *, struct sockaddr *, struct thread *);
434 void in_pcbdetach (struct inpcb *);
435 void in_pcbdisconnect (struct inpcb *);
436 void in_pcbinswildcardhash(struct inpcb *inp);
437 void in_pcbinswildcardhash_oncpu(struct inpcb *, struct inpcbinfo *);
438 void in_pcbinsconnhash(struct inpcb *inp);
439 int in_pcbinsporthash (struct inpcb *);
440 int in_pcbladdr (struct inpcb *, struct sockaddr *,
441 struct sockaddr_in **, struct thread *);
442 int in_pcbladdr_find (struct inpcb *, struct sockaddr *,
443 struct sockaddr_in **, struct thread *, int);
445 in_pcblookup_local (struct inpcbinfo *, struct in_addr, u_int, int,
448 in_pcblookup_hash (struct inpcbinfo *,
449 struct in_addr, u_int, struct in_addr, u_int,
450 int, struct ifnet *);
452 in_pcblookup_pkthash (struct inpcbinfo *,
453 struct in_addr, u_int, struct in_addr, u_int,
454 int, struct ifnet *, const struct mbuf *);
455 void in_pcbnotifyall (struct inpcbhead *, struct in_addr,
456 int, void (*)(struct inpcb *, int));
457 int in_setpeeraddr (struct socket *so, struct sockaddr **nam);
458 void in_setpeeraddr_dispatch(union netmsg *);
459 int in_setsockaddr (struct socket *so, struct sockaddr **nam);
460 void in_setsockaddr_dispatch(netmsg_t msg);
461 int in_baddynamic(u_int16_t, u_int16_t);
462 void in_pcbremwildcardhash(struct inpcb *inp);
463 void in_pcbremwildcardhash_oncpu(struct inpcb *, struct inpcbinfo *);
464 void in_pcbremconnhash(struct inpcb *inp);
465 void in_pcbremlists (struct inpcb *inp);
466 int prison_xinpcb (struct thread *p, struct inpcb *inp);
467 void in_savefaddr (struct socket *so, const struct sockaddr *faddr);
469 in_pcblocalgroup_last(const struct inpcbinfo *, const struct inpcb *);
471 int in_pcblist_global(SYSCTL_HANDLER_ARGS);
472 int in_pcblist_global_nomarker(SYSCTL_HANDLER_ARGS,
473 struct xinpcb **, int *);
476 #endif /* !_NETINET_IN_PCB_H_ */