179 lines
5.1 KiB
C
179 lines
5.1 KiB
C
/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)idrp_usrreq.c 8.1 (Berkeley) 6/10/93
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* $Id: idrp_usrreq.c,v 1.2 1994/08/02 07:50:16 davidg Exp $
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*/
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/protosw.h>
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#include <sys/errno.h>
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#include <net/route.h>
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#include <net/if.h>
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#include <netiso/argo_debug.h>
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#include <netiso/iso.h>
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#include <netiso/clnp.h>
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#include <netiso/clnl.h>
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#include <netiso/iso_pcb.h>
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#include <netiso/iso_var.h>
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int idrp_input();
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struct isopcb idrp_isop;
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static struct sockaddr_iso idrp_addrs[2] =
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{ { sizeof(idrp_addrs), AF_ISO, }, { sizeof(idrp_addrs[1]), AF_ISO, } };
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/*
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* IDRP initialization
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*/
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idrp_init()
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{
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extern struct clnl_protosw clnl_protox[256];
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idrp_isop.isop_next = idrp_isop.isop_prev = &idrp_isop;
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idrp_isop.isop_faddr = &idrp_isop.isop_sfaddr;
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idrp_isop.isop_laddr = &idrp_isop.isop_sladdr;
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idrp_isop.isop_sladdr = idrp_addrs[1];
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idrp_isop.isop_sfaddr = idrp_addrs[1];
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clnl_protox[ISO10747_IDRP].clnl_input = idrp_input;
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}
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/*
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* CALLED FROM:
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* tpclnp_input().
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* FUNCTION and ARGUMENTS:
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* Take a packet (m) from clnp, strip off the clnp header
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* and mke suitable for the idrp socket.
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* No return value.
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*/
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idrp_input(m, src, dst)
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register struct mbuf *m;
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struct sockaddr_iso *src, *dst;
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{
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if (idrp_isop.isop_socket == 0) {
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bad: m_freem(m);
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return 0;
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}
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bzero(idrp_addrs[0].siso_data, sizeof(idrp_addrs[0].siso_data));
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bcopy((caddr_t)&(src->siso_addr), (caddr_t)&idrp_addrs[0].siso_addr,
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1 + src->siso_nlen);
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bzero(idrp_addrs[1].siso_data, sizeof(idrp_addrs[1].siso_data));
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bcopy((caddr_t)&(dst->siso_addr), (caddr_t)&idrp_addrs[1].siso_addr,
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1 + dst->siso_nlen);
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if (sbappendaddr(&idrp_isop.isop_socket->so_rcv,
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(struct sockaddr *)idrp_addrs, m, (struct mbuf *)0) == 0)
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goto bad;
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sorwakeup(idrp_isop.isop_socket);
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return 0;
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}
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idrp_output(m, addr)
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struct mbuf *m, *addr;
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{
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register struct sockaddr_iso *siso = mtod(addr, struct sockaddr_iso *);
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int s = splnet(), i;
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bcopy((caddr_t)&(siso->siso_addr),
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(caddr_t)&idrp_isop.isop_sfaddr.siso_addr, 1 + siso->siso_nlen);
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siso++;
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bcopy((caddr_t)&(siso->siso_addr),
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(caddr_t)&idrp_isop.isop_sladdr.siso_addr, 1 + siso->siso_nlen);
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i = clnp_output(m, idrp_isop, m->m_pkthdr.len, 0);
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splx(s);
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return (i);
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}
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u_long idrp_sendspace = 3072; /* really max datagram size */
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u_long idrp_recvspace = 40 * 1024; /* 40 1K datagrams */
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/*ARGSUSED*/
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idrp_usrreq(so, req, m, addr, control)
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struct socket *so;
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int req;
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struct mbuf *m, *addr, *control;
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{
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int error = 0;
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/* Note: need to block idrp_input while changing
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* the udp pcb queue and/or pcb addresses.
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*/
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switch (req) {
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case PRU_ATTACH:
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if (idrp_isop.isop_socket != NULL) {
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error = ENXIO;
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break;
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}
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idrp_isop.isop_socket = so;
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error = soreserve(so, idrp_sendspace, idrp_recvspace);
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break;
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case PRU_SHUTDOWN:
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socantsendmore(so);
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break;
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case PRU_SEND:
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return (idrp_output(m, addr));
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case PRU_ABORT:
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soisdisconnected(so);
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case PRU_DETACH:
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idrp_isop.isop_socket = 0;
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break;
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case PRU_SENSE:
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/*
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* stat: don't bother with a blocksize.
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*/
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return (0);
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default:
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return (EOPNOTSUPP); /* do not free mbuf's */
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}
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release:
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if (control) {
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printf("idrp control data unexpectedly retained\n");
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m_freem(control);
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}
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if (m)
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m_freem(m);
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return (error);
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}
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