IN_PCB.H
上传用户:tjbfgc
上传日期:2013-03-31
资源大小:140k
文件大小:4k
- /*
- * 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
- */
- /*
- * 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.
- */
- struct inpcb {
- struct inpcb *inp_next,*inp_prev;
- /* pointers to other pcb's */
- struct inpcb *inp_head; /* pointer back to chain of inpcb's
- for this protocol */
- 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 */
- };
- /* 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_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR)
- #define INP_HDRINCL 0x08 /* user supplies entire IP header */
- #define INPLOOKUP_WILDCARD 1
- #define INPLOOKUP_SETLOCAL 2
- #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb)
- #ifdef KERNEL
- int in_losing __P((struct inpcb *));
- int in_pcballoc __P((struct socket *, struct inpcb *));
- int in_pcbbind __P((struct inpcb *, struct mbuf *));
- int in_pcbconnect __P((struct inpcb *, struct mbuf *));
- int in_pcbdetach __P((struct inpcb *));
- int in_pcbdisconnect __P((struct inpcb *));
- struct inpcb *
- in_pcblookup __P((struct inpcb *,
- struct in_addr, u_int, struct in_addr, u_int, int));
- int in_pcbnotify __P((struct inpcb *, struct sockaddr *,
- u_int, struct in_addr, u_int, int, void (*)(struct inpcb *, int)));
- void in_rtchange __P((struct inpcb *, int));
- int in_setpeeraddr __P((struct inpcb *, struct mbuf *));
- int in_setsockaddr __P((struct inpcb *, struct mbuf *));
- #endif