--- /dev/null
+/*!\file netinet/in_pcb.h
+ * Internal IP structures.
+ */
+
+/*
+ * Copyright (c) 1982, 1986, 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93
+ * $Id: in_pcb.h,v 1.14.2.2 1997/03/03 09:24:37 davidg Exp $
+ */
+
+#ifndef __NETINET_IN_PCB_H
+#define __NETINET_IN_PCB_H
+
+#include <sys/queue.h>
+
+/*
+ * Common structure pcb for internet protocol implementation.
+ * Here are stored pointers to local and foreign host table
+ * entries, local and foreign socket numbers, and pointers
+ * up (to a socket structure) and down (to a protocol-specific)
+ * control block.
+ */
+LIST_HEAD(inpcbhead, inpcb);
+
+struct inpcb {
+ LIST_ENTRY(inpcb) inp_list; /* list for all PCBs of this proto */
+ LIST_ENTRY(inpcb) inp_hash; /* hash list */
+ struct inpcbinfo *inp_pcbinfo;
+ struct in_addr inp_faddr; /* foreign host table entry */
+ u_short inp_fport; /* foreign port */
+ struct in_addr inp_laddr; /* local host table entry */
+ u_short inp_lport; /* local port */
+ struct socket *inp_socket; /* back pointer to socket */
+ caddr_t inp_ppcb; /* pointer to per-protocol pcb */
+ struct route inp_route; /* placeholder for routing entry */
+ int inp_flags; /* generic IP/datagram flags */
+ struct ip inp_ip; /* header prototype; should have more */
+ struct mbuf *inp_options; /* IP options */
+ struct ip_moptions *inp_moptions; /* IP multicast options */
+};
+
+struct inpcbinfo {
+ struct inpcbhead *listhead;
+ struct inpcbhead *hashbase;
+ unsigned long hashmask;
+ unsigned short lastport;
+ unsigned short lastlow;
+ unsigned short lasthi;
+};
+
+#define INP_PCBHASH(faddr, lport, fport, mask) \
+ (((faddr) ^ ((faddr) >> 16) ^ (lport) ^ (fport)) & (mask))
+
+/* flags in inp_flags: */
+#define INP_RECVOPTS 0x01 /* receive incoming IP options */
+#define INP_RECVRETOPTS 0x02 /* receive IP options for reply */
+#define INP_RECVDSTADDR 0x04 /* receive IP dst address */
+#define INP_HDRINCL 0x08 /* user supplies entire IP header */
+#define INP_HIGHPORT 0x10 /* user wants "high" port binding */
+#define INP_LOWPORT 0x20 /* user wants "low" port binding */
+#define INP_ANONPORT 0x40 /* port chosen for user */
+#define INP_RECVIF 0x80 /* receive incoming interface */
+#define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\
+ INP_RECVIF)
+
+#define INPLOOKUP_WILDCARD 1
+
+#define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb)
+
+#endif