617 lines
14 KiB
C
617 lines
14 KiB
C
/*
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* Copyright (c) 1995, Mike Mitchell
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* Copyright (c) 1984, 1985, 1986, 1987, 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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* @(#)ipx_usrreq.c
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*
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* $Id: ipx_usrreq.c,v 1.20 1998/08/23 03:07:15 wollman Exp $
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*/
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#include "opt_ipx.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/mbuf.h>
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#include <sys/proc.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/sysctl.h>
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#include <net/if.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netipx/ipx.h>
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#include <netipx/ipx_pcb.h>
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#include <netipx/ipx_if.h>
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#include <netipx/ipx_var.h>
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#include <netipx/ipx_ip.h>
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/*
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* IPX protocol implementation.
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*/
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static int ipxsendspace = IPXSNDQ;
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SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxsendspace, CTLFLAG_RW,
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&ipxsendspace, 0, "");
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static int ipxrecvspace = IPXRCVQ;
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SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxrecvspace, CTLFLAG_RW,
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&ipxrecvspace, 0, "");
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static int ipx_usr_abort(struct socket *so);
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static int ipx_attach(struct socket *so, int proto, struct proc *p);
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static int ipx_bind(struct socket *so, struct sockaddr *nam, struct proc *p);
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static int ipx_connect(struct socket *so, struct sockaddr *nam,
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struct proc *p);
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static int ipx_detach(struct socket *so);
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static int ipx_disconnect(struct socket *so);
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static int ipx_send(struct socket *so, int flags, struct mbuf *m,
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struct sockaddr *addr, struct mbuf *control,
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struct proc *p);
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static int ipx_shutdown(struct socket *so);
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static int ripx_attach(struct socket *so, int proto, struct proc *p);
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static int ipx_output(struct ipxpcb *ipxp, struct mbuf *m0);
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struct pr_usrreqs ipx_usrreqs = {
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ipx_usr_abort, pru_accept_notsupp, ipx_attach, ipx_bind,
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ipx_connect, pru_connect2_notsupp, ipx_control, ipx_detach,
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ipx_disconnect, pru_listen_notsupp, ipx_peeraddr, pru_rcvd_notsupp,
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pru_rcvoob_notsupp, ipx_send, pru_sense_null, ipx_shutdown,
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ipx_sockaddr, sosend, soreceive, sopoll
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};
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struct pr_usrreqs ripx_usrreqs = {
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ipx_usr_abort, pru_accept_notsupp, ripx_attach, ipx_bind,
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ipx_connect, pru_connect2_notsupp, ipx_control, ipx_detach,
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ipx_disconnect, pru_listen_notsupp, ipx_peeraddr, pru_rcvd_notsupp,
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pru_rcvoob_notsupp, ipx_send, pru_sense_null, ipx_shutdown,
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ipx_sockaddr, sosend, soreceive, sopoll
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};
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/*
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* This may also be called for raw listeners.
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*/
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void
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ipx_input(m, ipxp)
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struct mbuf *m;
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register struct ipxpcb *ipxp;
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{
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register struct ipx *ipx = mtod(m, struct ipx *);
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struct ifnet *ifp = m->m_pkthdr.rcvif;
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struct sockaddr_ipx ipx_ipx;
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if (ipxp == NULL)
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panic("No ipxpcb");
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/*
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* Construct sockaddr format source address.
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* Stuff source address and datagram in user buffer.
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*/
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ipx_ipx.sipx_len = sizeof(ipx_ipx);
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ipx_ipx.sipx_family = AF_IPX;
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ipx_ipx.sipx_addr = ipx->ipx_sna;
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ipx_ipx.sipx_zero[0] = '\0';
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ipx_ipx.sipx_zero[1] = '\0';
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if (ipx_neteqnn(ipx->ipx_sna.x_net, ipx_zeronet) && ifp != NULL) {
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register struct ifaddr *ifa;
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for (ifa = ifp->if_addrhead.tqh_first; ifa != NULL;
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ifa = ifa->ifa_link.tqe_next) {
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if (ifa->ifa_addr->sa_family == AF_IPX) {
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ipx_ipx.sipx_addr.x_net =
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IA_SIPX(ifa)->sipx_addr.x_net;
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break;
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}
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}
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}
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ipxp->ipxp_rpt = ipx->ipx_pt;
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if (!(ipxp->ipxp_flags & IPXP_RAWIN) ) {
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m->m_len -= sizeof(struct ipx);
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m->m_pkthdr.len -= sizeof(struct ipx);
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m->m_data += sizeof(struct ipx);
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}
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if (sbappendaddr(&ipxp->ipxp_socket->so_rcv, (struct sockaddr *)&ipx_ipx,
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m, (struct mbuf *)NULL) == 0)
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goto bad;
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sorwakeup(ipxp->ipxp_socket);
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return;
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bad:
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m_freem(m);
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}
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void
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ipx_abort(ipxp)
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struct ipxpcb *ipxp;
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{
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struct socket *so = ipxp->ipxp_socket;
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ipx_pcbdisconnect(ipxp);
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soisdisconnected(so);
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}
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/*
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* Drop connection, reporting
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* the specified error.
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*/
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void
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ipx_drop(ipxp, errno)
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register struct ipxpcb *ipxp;
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int errno;
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{
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struct socket *so = ipxp->ipxp_socket;
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/*
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* someday, in the IPX world
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* we will generate error protocol packets
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* announcing that the socket has gone away.
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*
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* XXX Probably never. IPX does not have error packets.
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*/
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/*if (TCPS_HAVERCVDSYN(tp->t_state)) {
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tp->t_state = TCPS_CLOSED;
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tcp_output(tp);
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}*/
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so->so_error = errno;
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ipx_pcbdisconnect(ipxp);
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soisdisconnected(so);
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}
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static int
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ipx_output(ipxp, m0)
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struct ipxpcb *ipxp;
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struct mbuf *m0;
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{
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register struct mbuf *m;
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register struct ipx *ipx;
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register struct socket *so;
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register int len = 0;
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register struct route *ro;
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struct mbuf *mprev = NULL;
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/*
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* Calculate data length.
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*/
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for (m = m0; m != NULL; m = m->m_next) {
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mprev = m;
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len += m->m_len;
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}
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/*
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* Make sure packet is actually of even length.
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*/
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if (len & 1) {
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m = mprev;
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if ((m->m_flags & M_EXT) == 0 &&
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(m->m_len + m->m_data < &m->m_dat[MLEN])) {
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m->m_len++;
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} else {
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struct mbuf *m1 = m_get(M_DONTWAIT, MT_DATA);
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if (m1 == NULL) {
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m_freem(m0);
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return (ENOBUFS);
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}
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m1->m_len = 1;
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* mtod(m1, char *) = 0;
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m->m_next = m1;
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}
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m0->m_pkthdr.len++;
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}
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/*
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* Fill in mbuf with extended IPX header
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* and addresses and length put into network format.
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*/
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m = m0;
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if (ipxp->ipxp_flags & IPXP_RAWOUT) {
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ipx = mtod(m, struct ipx *);
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} else {
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M_PREPEND(m, sizeof(struct ipx), M_DONTWAIT);
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if (m == NULL)
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return (ENOBUFS);
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ipx = mtod(m, struct ipx *);
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ipx->ipx_tc = 0;
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ipx->ipx_pt = ipxp->ipxp_dpt;
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ipx->ipx_sna = ipxp->ipxp_laddr;
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ipx->ipx_dna = ipxp->ipxp_faddr;
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len += sizeof(struct ipx);
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}
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ipx->ipx_len = htons((u_short)len);
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if (ipxcksum) {
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ipx->ipx_sum = 0;
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len = ((len - 1) | 1) + 1;
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ipx->ipx_sum = ipx_cksum(m, len);
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} else
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ipx->ipx_sum = 0xffff;
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/*
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* Output datagram.
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*/
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so = ipxp->ipxp_socket;
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if (so->so_options & SO_DONTROUTE)
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return (ipx_outputfl(m, (struct route *)NULL,
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(so->so_options & SO_BROADCAST) | IPX_ROUTETOIF));
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/*
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* Use cached route for previous datagram if
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* possible. If the previous net was the same
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* and the interface was a broadcast medium, or
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* if the previous destination was identical,
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* then we are ok.
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*
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* NB: We don't handle broadcasts because that
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* would require 3 subroutine calls.
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*/
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ro = &ipxp->ipxp_route;
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#ifdef ancient_history
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/*
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* I think that this will all be handled in ipx_pcbconnect!
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*/
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if (ro->ro_rt != NULL) {
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if(ipx_neteq(ipxp->ipxp_lastdst, ipx->ipx_dna)) {
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/*
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* This assumes we have no GH type routes
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*/
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if (ro->ro_rt->rt_flags & RTF_HOST) {
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if (!ipx_hosteq(ipxp->ipxp_lastdst, ipx->ipx_dna))
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goto re_route;
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}
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if ((ro->ro_rt->rt_flags & RTF_GATEWAY) == 0) {
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register struct ipx_addr *dst =
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&satoipx_addr(ro->ro_dst);
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dst->x_host = ipx->ipx_dna.x_host;
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}
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/*
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* Otherwise, we go through the same gateway
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* and dst is already set up.
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*/
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} else {
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re_route:
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RTFREE(ro->ro_rt);
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ro->ro_rt = NULL;
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}
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}
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ipxp->ipxp_lastdst = ipx->ipx_dna;
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#endif /* ancient_history */
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return (ipx_outputfl(m, ro, so->so_options & SO_BROADCAST));
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}
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int
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ipx_ctloutput(so, sopt)
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struct socket *so;
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struct sockopt *sopt;
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{
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struct ipxpcb *ipxp = sotoipxpcb(so);
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int mask, error, optval;
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short soptval;
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struct ipx ioptval;
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error = 0;
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if (ipxp == NULL)
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return (EINVAL);
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switch (sopt->sopt_dir) {
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case SOPT_GET:
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switch (sopt->sopt_name) {
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case SO_ALL_PACKETS:
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mask = IPXP_ALL_PACKETS;
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goto get_flags;
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case SO_HEADERS_ON_INPUT:
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mask = IPXP_RAWIN;
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goto get_flags;
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case SO_HEADERS_ON_OUTPUT:
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mask = IPXP_RAWOUT;
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get_flags:
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soptval = ipxp->ipxp_flags & mask;
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error = sooptcopyout(sopt, &soptval, sizeof soptval);
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break;
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case SO_DEFAULT_HEADERS:
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ioptval.ipx_len = 0;
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ioptval.ipx_sum = 0;
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ioptval.ipx_tc = 0;
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ioptval.ipx_pt = ipxp->ipxp_dpt;
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ioptval.ipx_dna = ipxp->ipxp_faddr;
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ioptval.ipx_sna = ipxp->ipxp_laddr;
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error = sooptcopyout(sopt, &soptval, sizeof soptval);
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break;
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case SO_SEQNO:
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error = sooptcopyout(sopt, &ipx_pexseq,
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sizeof ipx_pexseq);
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ipx_pexseq++;
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break;
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default:
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error = EINVAL;
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}
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break;
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case SOPT_SET:
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switch (sopt->sopt_name) {
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case SO_ALL_PACKETS:
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mask = IPXP_ALL_PACKETS;
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goto set_head;
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case SO_HEADERS_ON_INPUT:
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mask = IPXP_RAWIN;
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goto set_head;
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case SO_HEADERS_ON_OUTPUT:
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mask = IPXP_RAWOUT;
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set_head:
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error = sooptcopyin(sopt, &optval, sizeof optval,
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sizeof optval);
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if (error)
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break;
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if (optval)
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ipxp->ipxp_flags |= mask;
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else
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ipxp->ipxp_flags &= ~mask;
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break;
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case SO_DEFAULT_HEADERS:
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error = sooptcopyin(sopt, &ioptval, sizeof ioptval,
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sizeof ioptval);
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if (error)
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break;
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ipxp->ipxp_dpt = ioptval.ipx_pt;
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break;
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#ifdef IPXIP
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case SO_IPXIP_ROUTE:
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error = ipxip_route(so, sopt);
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break;
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#endif /* IPXIP */
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#ifdef IPTUNNEL
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#if 0
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case SO_IPXTUNNEL_ROUTE:
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error = ipxtun_route(so, sopt);
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break;
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#endif
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#endif
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default:
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error = EINVAL;
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}
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break;
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}
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return (error);
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}
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static int
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ipx_usr_abort(so)
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struct socket *so;
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{
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int s;
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struct ipxpcb *ipxp = sotoipxpcb(so);
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s = splnet();
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ipx_pcbdetach(ipxp);
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splx(s);
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sofree(so);
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soisdisconnected(so);
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return (0);
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}
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static int
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ipx_attach(so, proto, p)
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struct socket *so;
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int proto;
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struct proc *p;
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{
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int error;
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int s;
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struct ipxpcb *ipxp = sotoipxpcb(so);
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if (ipxp != NULL)
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return (EINVAL);
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s = splnet();
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error = ipx_pcballoc(so, &ipxpcb, p);
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splx(s);
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if (error == 0)
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error = soreserve(so, ipxsendspace, ipxrecvspace);
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return (error);
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}
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static int
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ipx_bind(so, nam, p)
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struct socket *so;
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struct sockaddr *nam;
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struct proc *p;
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{
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struct ipxpcb *ipxp = sotoipxpcb(so);
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return (ipx_pcbbind(ipxp, nam, p));
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}
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static int
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ipx_connect(so, nam, p)
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struct socket *so;
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struct sockaddr *nam;
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struct proc *p;
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{
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int error;
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int s;
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struct ipxpcb *ipxp = sotoipxpcb(so);
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if (!ipx_nullhost(ipxp->ipxp_faddr))
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return (EISCONN);
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s = splnet();
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error = ipx_pcbconnect(ipxp, nam, p);
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splx(s);
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if (error == 0)
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soisconnected(so);
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return (error);
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}
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static int
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ipx_detach(so)
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struct socket *so;
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{
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int s;
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struct ipxpcb *ipxp = sotoipxpcb(so);
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if (ipxp == NULL)
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return (ENOTCONN);
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s = splnet();
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ipx_pcbdetach(ipxp);
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splx(s);
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return (0);
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}
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static int
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ipx_disconnect(so)
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struct socket *so;
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{
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int s;
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struct ipxpcb *ipxp = sotoipxpcb(so);
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if (ipx_nullhost(ipxp->ipxp_faddr))
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return (ENOTCONN);
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s = splnet();
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ipx_pcbdisconnect(ipxp);
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splx(s);
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soisdisconnected(so);
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return (0);
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}
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int
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ipx_peeraddr(so, nam)
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struct socket *so;
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struct sockaddr **nam;
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{
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|
struct ipxpcb *ipxp = sotoipxpcb(so);
|
|
|
|
ipx_setpeeraddr(ipxp, nam); /* XXX what if alloc fails? */
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ipx_send(so, flags, m, nam, control, p)
|
|
struct socket *so;
|
|
int flags;
|
|
struct mbuf *m;
|
|
struct sockaddr *nam;
|
|
struct mbuf *control;
|
|
struct proc *p;
|
|
{
|
|
int error;
|
|
struct ipxpcb *ipxp = sotoipxpcb(so);
|
|
struct ipx_addr laddr;
|
|
int s = 0;
|
|
|
|
if (nam != NULL) {
|
|
laddr = ipxp->ipxp_laddr;
|
|
if (!ipx_nullhost(ipxp->ipxp_faddr)) {
|
|
error = EISCONN;
|
|
goto send_release;
|
|
}
|
|
/*
|
|
* Must block input while temporarily connected.
|
|
*/
|
|
s = splnet();
|
|
error = ipx_pcbconnect(ipxp, nam, p);
|
|
if (error) {
|
|
splx(s);
|
|
goto send_release;
|
|
}
|
|
} else {
|
|
if (ipx_nullhost(ipxp->ipxp_faddr)) {
|
|
error = ENOTCONN;
|
|
goto send_release;
|
|
}
|
|
}
|
|
error = ipx_output(ipxp, m);
|
|
m = NULL;
|
|
if (nam != NULL) {
|
|
ipx_pcbdisconnect(ipxp);
|
|
splx(s);
|
|
ipxp->ipxp_laddr.x_host = laddr.x_host;
|
|
ipxp->ipxp_laddr.x_port = laddr.x_port;
|
|
}
|
|
|
|
send_release:
|
|
if (m != NULL)
|
|
m_freem(m);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
ipx_shutdown(so)
|
|
struct socket *so;
|
|
{
|
|
socantsendmore(so);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
ipx_sockaddr(so, nam)
|
|
struct socket *so;
|
|
struct sockaddr **nam;
|
|
{
|
|
struct ipxpcb *ipxp = sotoipxpcb(so);
|
|
|
|
ipx_setsockaddr(ipxp, nam); /* XXX what if alloc fails? */
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ripx_attach(so, proto, p)
|
|
struct socket *so;
|
|
int proto;
|
|
struct proc *p;
|
|
{
|
|
int error = 0;
|
|
int s;
|
|
struct ipxpcb *ipxp = sotoipxpcb(so);
|
|
|
|
if (p != NULL && (error = suser(p->p_ucred, &p->p_acflag)) != 0)
|
|
return (error);
|
|
s = splnet();
|
|
error = ipx_pcballoc(so, &ipxrawpcb, p);
|
|
splx(s);
|
|
if (error)
|
|
return (error);
|
|
error = soreserve(so, ipxsendspace, ipxrecvspace);
|
|
if (error)
|
|
return (error);
|
|
ipxp = sotoipxpcb(so);
|
|
ipxp->ipxp_faddr.x_host = ipx_broadhost;
|
|
ipxp->ipxp_flags = IPXP_RAWIN | IPXP_RAWOUT;
|
|
return (error);
|
|
}
|