2 * Copyright (c) 2004 Jeffrey Hsu. All rights reserved.
3 * Copyright (c) 1982, 1986, 1990, 1993
4 * The Regents of the University of California. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by the University of
17 * California, Berkeley and its contributors.
18 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93
35 * $FreeBSD: src/sys/netinet/in_pcb.h,v 1.32.2.7 2003/01/24 05:11:34 sam Exp $
36 * $DragonFly: src/sys/netinet/in_pcb.h,v 1.10 2004/04/10 00:10:42 hsu Exp $
39 #ifndef _NETINET_IN_PCB_H_
40 #define _NETINET_IN_PCB_H_
42 #include <sys/queue.h>
44 #include <net/route.h>
46 #define in6pcb inpcb /* for KAME src sync over BSD*'s */
47 #define in6p_sp inp_sp /* for KAME src sync over BSD*'s */
51 * Common structure pcb for internet protocol implementation.
52 * Here are stored pointers to local and foreign host table
53 * entries, local and foreign socket numbers, and pointers
54 * up (to a socket structure) and down (to a protocol-specific)
57 LIST_HEAD(inpcbhead, inpcb);
58 LIST_HEAD(inpcbporthead, inpcbport);
59 typedef u_quad_t inp_gen_t;
62 * PCB with AF_INET6 null bind'ed laddr can receive AF_INET input packet.
63 * So, AF_INET6 null laddr is also used as AF_INET null laddr,
64 * by utilize following structure. (At last, same as INRIA)
67 u_int32_t ia46_pad32[3];
68 struct in_addr ia46_addr4;
72 * NOTE: ipv6 addrs should be 64-bit aligned, per RFC 2553.
73 * in_conninfo has some extra padding to accomplish this.
76 u_int16_t ie_fport; /* foreign port */
77 u_int16_t ie_lport; /* local port */
78 /* protocol dependent part, local and foreign addr */
80 /* foreign host table entry */
81 struct in_addr_4in6 ie46_foreign;
82 struct in6_addr ie6_foreign;
85 /* local host table entry */
86 struct in_addr_4in6 ie46_local;
87 struct in6_addr ie6_local;
89 #define ie_faddr ie_dependfaddr.ie46_foreign.ia46_addr4
90 #define ie_laddr ie_dependladdr.ie46_local.ia46_addr4
91 #define ie6_faddr ie_dependfaddr.ie6_foreign
92 #define ie6_laddr ie_dependladdr.ie6_local
97 * At some point struct route should possibly change to:
99 * struct in_endpoints *ie;
104 u_int16_t inc_pad; /* XXX alignment for in_endpoints */
105 /* protocol dependent part; cached route */
106 struct in_endpoints inc_ie;
108 /* placeholder for routing entry */
109 struct route inc4_route;
110 struct route_in6 inc6_route;
113 #define inc_isipv6 inc_flags /* temp compatibility */
114 #define inc_fport inc_ie.ie_fport
115 #define inc_lport inc_ie.ie_lport
116 #define inc_faddr inc_ie.ie_faddr
117 #define inc_laddr inc_ie.ie_laddr
118 #define inc_route inc_dependroute.inc4_route
119 #define inc6_faddr inc_ie.ie6_faddr
120 #define inc6_laddr inc_ie.ie6_laddr
121 #define inc6_route inc_dependroute.inc6_route
124 * NB: the zone allocator is type-stable EXCEPT FOR THE FIRST TWO LONGS
125 * of the structure. Therefore, it is important that the members in
126 * that position not contain any information which is required to be
132 LIST_ENTRY(inpcb) inp_hash; /* hash list */
133 LIST_ENTRY(inpcb) inp_list; /* list for all PCBs of this proto */
136 /* local and foreign ports, local and foreign addr */
137 struct in_conninfo inp_inc;
139 caddr_t inp_ppcb; /* pointer to per-protocol pcb */
140 struct inpcbinfo *inp_pcbinfo; /* PCB list info */
141 struct inpcbinfo *inp_cpcbinfo;/* back pointer for connection table */
142 struct socket *inp_socket; /* back pointer to socket */
143 /* list for this PCB's local port */
144 int inp_flags; /* generic IP/datagram flags */
146 struct inpcbpolicy *inp_sp; /* for IPSEC */
150 u_char inp_ip_ttl; /* time to live proto */
151 u_char inp_ip_p; /* protocol proto */
153 /* protocol dependent part; options */
155 u_char inp4_ip_tos; /* type of service proto */
156 struct mbuf *inp4_options; /* IP options */
157 struct ip_moptions *inp4_moptions; /* IP multicast options */
159 #define inp_fport inp_inc.inc_fport
160 #define inp_lport inp_inc.inc_lport
161 #define inp_faddr inp_inc.inc_faddr
162 #define inp_laddr inp_inc.inc_laddr
163 #define inp_route inp_inc.inc_route
164 #define inp_ip_tos inp_depend4.inp4_ip_tos
165 #define inp_options inp_depend4.inp4_options
166 #define inp_moptions inp_depend4.inp4_moptions
169 struct mbuf *inp6_options;
170 /* IP6 options for outgoing packets */
171 struct ip6_pktopts *inp6_outputopts;
172 /* IP multicast options */
173 struct ip6_moptions *inp6_moptions;
174 /* ICMPv6 code type filter */
175 struct icmp6_filter *inp6_icmp6filt;
176 /* IPV6_CHECKSUM setsockopt */
178 u_short inp6_ifindex;
182 LIST_ENTRY(inpcb) inp_portlist;
183 struct inpcbport *inp_phd; /* head of this list */
184 inp_gen_t inp_gencnt; /* generation count of this instance */
185 #define in6p_faddr inp_inc.inc6_faddr
186 #define in6p_laddr inp_inc.inc6_laddr
187 #define in6p_route inp_inc.inc6_route
188 #define in6p_ip6_hlim inp_depend6.inp6_hlim
189 #define in6p_hops inp_depend6.inp6_hops /* default hop limit */
190 #define in6p_ip6_nxt inp_ip_p
191 #define in6p_flowinfo inp_flow
192 #define in6p_vflag inp_vflag
193 #define in6p_options inp_depend6.inp6_options
194 #define in6p_outputopts inp_depend6.inp6_outputopts
195 #define in6p_moptions inp_depend6.inp6_moptions
196 #define in6p_icmp6filt inp_depend6.inp6_icmp6filt
197 #define in6p_cksum inp_depend6.inp6_cksum
198 #define inp6_ifindex inp_depend6.inp6_ifindex
199 #define in6p_flags inp_flags /* for KAME src sync over BSD*'s */
200 #define in6p_socket inp_socket /* for KAME src sync over BSD*'s */
201 #define in6p_lport inp_lport /* for KAME src sync over BSD*'s */
202 #define in6p_fport inp_fport /* for KAME src sync over BSD*'s */
203 #define in6p_ppcb inp_ppcb /* for KAME src sync over BSD*'s */
206 * The range of the generation count, as used in this implementation,
207 * is 9e19. We would have to create 300 billion connections per
208 * second for this number to roll over in a year. This seems sufficiently
209 * unlikely that we simply don't concern ourselves with that possibility.
213 * Interface exported to userland by various protocols which use
214 * inpcbs. Hack alert -- only define if struct xsocket is in scope.
216 #ifdef _SYS_SOCKETVAR_H_
218 size_t xi_len; /* length of this structure */
220 struct xsocket xi_socket;
221 u_quad_t xi_alignment_hack;
225 size_t xig_len; /* length of this structure */
226 u_int xig_count; /* number of PCBs at this time */
227 inp_gen_t xig_gen; /* generation count at this time */
228 so_gen_t xig_sogen; /* socket generation count at this time */
230 #endif /* _SYS_SOCKETVAR_H_ */
233 LIST_ENTRY(inpcbport) phd_hash;
234 struct inpcbhead phd_pcblist;
238 struct inpcbinfo { /* XXX documentation, prefixes */
239 struct inpcbhead *hashbase;
241 struct inpcbporthead *porthashbase;
243 struct inpcbhead *wildcardhashbase;
244 u_long wildcardhashmask;
245 struct inpcbhead listhead; /* head of queue of active pcb's */
249 struct vm_zone *ipi_zone; /* zone to allocate pcbs from */
250 u_int ipi_count; /* number of pcbs in this list */
251 u_quad_t ipi_gencnt; /* current generation count */
255 #define INP_PCBCONNHASH(faddr, fport, laddr, lport, mask) \
256 (((faddr) ^ ((faddr) >> 16) ^ (laddr) ^ ntohs((lport) ^ (fport))) & (mask))
258 #define INP_PCBPORTHASH(lport, mask) (ntohs(lport) & (mask))
260 #define INP_PCBWILDCARDHASH(lport, mask) (ntohs(lport) & (mask))
262 /* flags in inp_flags: */
263 #define INP_RECVOPTS 0x01 /* receive incoming IP options */
264 #define INP_RECVRETOPTS 0x02 /* receive IP options for reply */
265 #define INP_RECVDSTADDR 0x04 /* receive IP dst address */
266 #define INP_HDRINCL 0x08 /* user supplies entire IP header */
267 #define INP_HIGHPORT 0x10 /* user wants "high" port binding */
268 #define INP_LOWPORT 0x20 /* user wants "low" port binding */
269 #define INP_ANONPORT 0x40 /* port chosen for user */
270 #define INP_RECVIF 0x80 /* receive incoming interface */
271 #define INP_MTUDISC 0x100 /* user can do MTU discovery */
272 #define INP_FAITH 0x200 /* accept FAITH'ed connections */
273 #define INP_WILDCARD 0x400 /* wildcard match */
274 #define INP_CONNECTED 0x800 /* exact match */
275 #define INP_WASBOUND_NOTANY 0x1000 /* was bound to non-null laddr */
277 #define IN6P_IPV6_V6ONLY 0x008000 /* restrict AF_INET6 socket for v6 */
279 #define IN6P_PKTINFO 0x010000 /* receive IP6 dst and I/F */
280 #define IN6P_HOPLIMIT 0x020000 /* receive hoplimit */
281 #define IN6P_HOPOPTS 0x040000 /* receive hop-by-hop options */
282 #define IN6P_DSTOPTS 0x080000 /* receive dst options after rthdr */
283 #define IN6P_RTHDR 0x100000 /* receive routing header */
284 #define IN6P_RTHDRDSTOPTS 0x200000 /* receive dstoptions before rthdr */
285 #define IN6P_AUTOFLOWLABEL 0x800000 /* attach flowlabel automatically */
287 #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\
289 IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\
290 IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\
292 #define INP_UNMAPPABLEOPTS (IN6P_HOPOPTS|IN6P_DSTOPTS|IN6P_RTHDR|\
295 /* for KAME src sync over BSD*'s */
296 #define IN6P_HIGHPORT INP_HIGHPORT
297 #define IN6P_LOWPORT INP_LOWPORT
298 #define IN6P_ANONPORT INP_ANONPORT
299 #define IN6P_RECVIF INP_RECVIF
300 #define IN6P_MTUDISC INP_MTUDISC
301 #define IN6P_FAITH INP_FAITH
302 #define IN6P_CONTROLOPTS INP_CONTROLOPTS
304 * socket AF version is {newer than,or include}
305 * actual datagram AF version
308 #define INPLOOKUP_WILDCARD 1
309 #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb)
310 #define sotoin6pcb(so) sotoinpcb(so) /* for KAME src sync over BSD*'s */
312 #define INP_SOCKAF(so) so->so_proto->pr_domain->dom_family
314 #define INP_CHECK_SOCKAF(so, af) (INP_SOCKAF(so) == af)
317 extern int ipport_lowfirstauto;
318 extern int ipport_lowlastauto;
319 extern int ipport_firstauto;
320 extern int ipport_lastauto;
321 extern int ipport_hifirstauto;
322 extern int ipport_hilastauto;
324 void in_pcbpurgeif0 (struct inpcb *, struct ifnet *);
325 void in_losing (struct inpcb *);
326 void in_rtchange (struct inpcb *, int);
327 int in_pcballoc (struct socket *, struct inpcbinfo *);
328 int in_pcbbind (struct inpcb *, struct sockaddr *, struct thread *);
329 int in_pcbconnect (struct inpcb *, struct sockaddr *, struct thread *);
330 void in_pcbdetach (struct inpcb *);
331 void in_pcbdisconnect (struct inpcb *);
332 void in_pcbinswildcardhash(struct inpcb *inp);
333 void in_pcbinsconnhash(struct inpcb *inp);
334 int in_pcbinsporthash (struct inpcb *);
335 int in_pcbladdr (struct inpcb *, struct sockaddr *,
336 struct sockaddr_in **);
338 in_pcblookup_local (struct inpcbinfo *,
339 struct in_addr, u_int, int);
341 in_pcblookup_hash (struct inpcbinfo *,
342 struct in_addr, u_int, struct in_addr, u_int,
343 int, struct ifnet *);
344 void in_pcbnotifyall (struct inpcbhead *, struct in_addr,
345 int, void (*)(struct inpcb *, int));
346 int in_setpeeraddr (struct socket *so, struct sockaddr **nam);
347 int in_setsockaddr (struct socket *so, struct sockaddr **nam);
348 void in_pcbremwildcardhash(struct inpcb *inp);
349 void in_pcbremconnhash(struct inpcb *inp);
350 void in_pcbremlists (struct inpcb *inp);
351 int prison_xinpcb (struct thread *p, struct inpcb *inp);
354 #endif /* !_NETINET_IN_PCB_H_ */