2 * Copyright (c) 1982, 1986, 1990, 1993
3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that the following conditions
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13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
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18 * may be used to endorse or promote products derived from this software
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93
37 #ifndef _NETINET_IN_PCB_H_
38 #define _NETINET_IN_PCB_H_
40 #include <sys/queue.h>
43 #include <netinet6/ipsec.h> /* for IPSEC */
45 #define in6pcb inpcb /* for KAME src sync over BSD*'s */
46 #define in6p_sp inp_sp /* for KAME src sync over BSD*'s */
49 * Common structure pcb for internet protocol implementation.
50 * Here are stored pointers to local and foreign host table
51 * entries, local and foreign socket numbers, and pointers
52 * up (to a socket structure) and down (to a protocol-specific)
55 LIST_HEAD(inpcbhead, inpcb);
56 LIST_HEAD(inpcbporthead, inpcbport);
57 typedef u_quad_t inp_gen_t;
60 * PCB with AF_INET6 null bind'ed laddr can receive AF_INET input packet.
61 * So, AF_INET6 null laddr is also used as AF_INET null laddr,
62 * by utilize following structure. (At last, same as INRIA)
65 u_int32_t ia46_pad32[3];
66 struct in_addr ia46_addr4;
70 * NB: the zone allocator is type-stable EXCEPT FOR THE FIRST TWO LONGS
71 * of the structure. Therefore, it is important that the members in
72 * that position not contain any information which is required to be
78 LIST_ENTRY(inpcb) inp_hash; /* hash list */
79 u_short inp_fport; /* foreign port */
80 u_short inp_lport; /* local port */
81 LIST_ENTRY(inpcb) inp_list; /* list for all PCBs of this proto */
84 /* protocol dependent part, local and foreign addr */
86 /* foreign host table entry */
87 struct in_addr_4in6 inp46_foreign;
88 struct in6_addr inp6_foreign;
91 /* local host table entry */
92 struct in_addr_4in6 inp46_local;
93 struct in6_addr inp6_local;
96 caddr_t inp_ppcb; /* pointer to per-protocol pcb */
97 struct inpcbinfo *inp_pcbinfo; /* PCB list info */
98 struct socket *inp_socket; /* back pointer to socket */
99 /* list for this PCB's local port */
100 int inp_flags; /* generic IP/datagram flags */
102 /* protocol dependent part; cached route */
104 /* placeholder for routing entry */
105 struct route inp4_route;
106 struct route_in6 inp6_route;
109 struct inpcbpolicy *inp_sp; /* for IPSEC */
113 u_char inp_ip_ttl; /* time to live proto */
114 u_char inp_ip_p; /* protocol proto */
116 /* protocol dependent part; options */
118 u_char inp4_ip_tos; /* type of service proto */
119 struct mbuf *inp4_options; /* IP options */
120 struct ip_moptions *inp4_moptions; /* IP multicast options */
122 #define inp_faddr inp_dependfaddr.inp46_foreign.ia46_addr4
123 #define inp_laddr inp_dependladdr.inp46_local.ia46_addr4
124 #define inp_route inp_dependroute.inp4_route
125 #define inp_ip_tos inp_depend4.inp4_ip_tos
126 #define inp_options inp_depend4.inp4_options
127 #define inp_moptions inp_depend4.inp4_moptions
130 struct mbuf *inp6_options;
131 /* IP6 options for outgoing packets */
132 struct ip6_pktopts *inp6_outputopts;
133 /* IP multicast options */
134 struct ip6_moptions *inp6_moptions;
135 /* ICMPv6 code type filter */
136 struct icmp6_filter *inp6_icmp6filt;
137 /* IPV6_CHECKSUM setsockopt */
139 u_short inp6_ifindex;
143 LIST_ENTRY(inpcb) inp_portlist;
144 struct inpcbport *inp_phd; /* head of this list */
145 inp_gen_t inp_gencnt; /* generation count of this instance */
146 #define in6p_faddr inp_dependfaddr.inp6_foreign
147 #define in6p_laddr inp_dependladdr.inp6_local
148 #define in6p_route inp_dependroute.inp6_route
149 #define in6p_ip6_hlim inp_depend6.inp6_hlim
150 #define in6p_hops inp_depend6.inp6_hops /* default hop limit */
151 #define in6p_ip6_nxt inp_ip_p
152 #define in6p_flowinfo inp_flow
153 #define in6p_vflag inp_vflag
154 #define in6p_options inp_depend6.inp6_options
155 #define in6p_outputopts inp_depend6.inp6_outputopts
156 #define in6p_moptions inp_depend6.inp6_moptions
157 #define in6p_icmp6filt inp_depend6.inp6_icmp6filt
158 #define in6p_cksum inp_depend6.inp6_cksum
159 #define inp6_ifindex inp_depend6.inp6_ifindex
160 #define in6p_flags inp_flags /* for KAME src sync over BSD*'s */
161 #define in6p_socket inp_socket /* for KAME src sync over BSD*'s */
162 #define in6p_lport inp_lport /* for KAME src sync over BSD*'s */
163 #define in6p_fport inp_fport /* for KAME src sync over BSD*'s */
164 #define in6p_ppcb inp_ppcb /* for KAME src sync over BSD*'s */
167 * The range of the generation count, as used in this implementation,
168 * is 9e19. We would have to create 300 billion connections per
169 * second for this number to roll over in a year. This seems sufficiently
170 * unlikely that we simply don't concern ourselves with that possibility.
174 * Interface exported to userland by various protocols which use
175 * inpcbs. Hack alert -- only define if struct xsocket is in scope.
177 #ifdef _SYS_SOCKETVAR_H_
179 size_t xi_len; /* length of this structure */
181 struct xsocket xi_socket;
182 u_quad_t xi_alignment_hack;
186 size_t xig_len; /* length of this structure */
187 u_int xig_count; /* number of PCBs at this time */
188 inp_gen_t xig_gen; /* generation count at this time */
189 so_gen_t xig_sogen; /* socket generation count at this time */
191 #endif /* _SYS_SOCKETVAR_H_ */
194 LIST_ENTRY(inpcbport) phd_hash;
195 struct inpcbhead phd_pcblist;
199 struct inpcbinfo { /* XXX documentation, prefixes */
200 struct inpcbhead *hashbase;
202 struct inpcbporthead *porthashbase;
204 struct inpcbhead *listhead;
208 struct vm_zone *ipi_zone; /* zone to allocate pcbs from */
209 u_int ipi_count; /* number of pcbs in this list */
210 u_quad_t ipi_gencnt; /* current generation count */
213 #define INP_PCBHASH(faddr, lport, fport, mask) \
214 (((faddr) ^ ((faddr) >> 16) ^ ntohs((lport) ^ (fport))) & (mask))
215 #define INP_PCBPORTHASH(lport, mask) \
216 (ntohs((lport)) & (mask))
218 /* flags in inp_flags: */
219 #define INP_RECVOPTS 0x01 /* receive incoming IP options */
220 #define INP_RECVRETOPTS 0x02 /* receive IP options for reply */
221 #define INP_RECVDSTADDR 0x04 /* receive IP dst address */
222 #define INP_HDRINCL 0x08 /* user supplies entire IP header */
223 #define INP_HIGHPORT 0x10 /* user wants "high" port binding */
224 #define INP_LOWPORT 0x20 /* user wants "low" port binding */
225 #define INP_ANONPORT 0x40 /* port chosen for user */
226 #define INP_RECVIF 0x80 /* receive incoming interface */
227 #define INP_MTUDISC 0x100 /* user can do MTU discovery */
228 #define INP_FAITH 0x200 /* accept FAITH'ed connections */
229 #define IN6P_PKTINFO 0x010000
230 #define IN6P_HOPLIMIT 0x020000
231 #define IN6P_NEXTHOP 0x040000
232 #define IN6P_HOPOPTS 0x080000
233 #define IN6P_DSTOPTS 0x100000
234 #define IN6P_RTHDR 0x200000
235 #define IN6P_BINDV6ONLY 0x400000
236 #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\
238 IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_NEXTHOP|\
239 IN6P_HOPOPTS|IN6P_DSTOPTS|IN6P_RTHDR)
241 #define INP_UNMAPPABLEOPTS (IN6P_HOPOPTS|IN6P_DSTOPTS|IN6P_RTHDR)
243 /* for KAME src sync over BSD*'s */
244 #define IN6P_RECVOPTS INP_RECVOPTS
245 #define IN6P_RECVRETOPTS INP_RECVRETOPTS
246 #define IN6P_RECVDSTADDR INP_RECVDSTADDR
247 #define IN6P_HDRINCL INP_HDRINCL
248 #define IN6P_HIGHPORT INP_HIGHPORT
249 #define IN6P_LOWPORT INP_LOWPORT
250 #define IN6P_ANONPORT INP_ANONPORT
251 #define IN6P_RECVIF INP_RECVIF
252 #define IN6P_MTUDISC INP_MTUDISC
253 #define IN6P_FAITH INP_FAITH
254 #define IN6P_CONTROLOPTS INP_CONTROLOPTS
256 * socket AF version is {newer than,or include}
257 * actual datagram AF version
260 #define INPLOOKUP_WILDCARD 1
261 #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb)
262 #define sotoin6pcb(so) sotoinpcb(so) /* for KAME src sync over BSD*'s */
264 #define INP_SOCKAF(so) so->so_proto->pr_domain->dom_family
266 #define INP_CHECK_SOCKAF(so, af) (INP_SOCKAF(so) == af)
269 extern int ipport_lowfirstauto;
270 extern int ipport_lowlastauto;
271 extern int ipport_firstauto;
272 extern int ipport_lastauto;
273 extern int ipport_hifirstauto;
274 extern int ipport_hilastauto;
276 void in_losing __P((struct inpcb *));
277 int in_pcballoc __P((struct socket *, struct inpcbinfo *, struct proc *));
278 int in_pcbbind __P((struct inpcb *, struct sockaddr *, struct proc *));
279 int in_pcbconnect __P((struct inpcb *, struct sockaddr *, struct proc *));
280 void in_pcbdetach __P((struct inpcb *));
281 void in_pcbdisconnect __P((struct inpcb *));
282 int in_pcbinshash __P((struct inpcb *));
283 int in_pcbladdr __P((struct inpcb *, struct sockaddr *,
284 struct sockaddr_in **));
286 in_pcblookup_local __P((struct inpcbinfo *,
287 struct in_addr, u_int, int));
289 in_pcblookup_hash __P((struct inpcbinfo *,
290 struct in_addr, u_int, struct in_addr, u_int,
291 int, struct ifnet *));
292 void in_pcbnotify __P((struct inpcbhead *, struct sockaddr *,
293 u_int, struct in_addr, u_int, int, void (*)(struct inpcb *, int)));
294 void in_pcbrehash __P((struct inpcb *));
295 int in_setpeeraddr __P((struct socket *so, struct sockaddr **nam));
296 int in_setsockaddr __P((struct socket *so, struct sockaddr **nam));
297 void in_pcbremlists __P((struct inpcb *inp));
298 int prison_xinpcb __P((struct proc *p, struct inpcb *inp));
301 #endif /* !_NETINET_IN_PCB_H_ */