cc6a66f20e
Submitted by: Mike Mitchell, supervisor@alb.asctmd.com This is a bulk mport of Mike's IPX/SPX protocol stacks and all the related gunf that goes with it.. it is not guaranteed to work 100% correctly at this time but as we had several people trying to work on it I figured it would be better to get it checked in so they could all get teh same thing to work on.. Mikes been using it for a year or so but on 2.0 more changes and stuff will be merged in from other developers now that this is in. Mike Mitchell, Network Engineer AMTECH Systems Corporation, Technology and Manufacturing 8600 Jefferson Street, Albuquerque, New Mexico 87113 (505) 856-8000 supervisor@alb.asctmd.com
373 lines
9.9 KiB
C
373 lines
9.9 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.c
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/ioctl.h>
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#include <sys/protosw.h>
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#include <sys/errno.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <net/if.h>
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#include <net/route.h>
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#include <netipx/ipx.h>
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#include <netipx/ipx_if.h>
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#ifdef IPX
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struct ipx_ifaddr *ipx_ifaddr;
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int ipx_interfaces;
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/*
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* Generic internet control operations (ioctl's).
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*/
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/* ARGSUSED */
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int
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ipx_control(so, cmd, data, ifp)
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struct socket *so;
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int cmd;
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caddr_t data;
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register struct ifnet *ifp;
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{
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register struct ifreq *ifr = (struct ifreq *)data;
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register struct ipx_aliasreq *ifra = (struct ipx_aliasreq *)data;
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register struct ipx_ifaddr *ia;
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struct ifaddr *ifa;
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struct ipx_ifaddr *oia;
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int dstIsNew, hostIsNew;
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int error = 0;
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/*
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* Find address for this interface, if it exists.
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*/
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if (ifp == 0)
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return (EADDRNOTAVAIL);
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for (ia = ipx_ifaddr; ia; ia = ia->ia_next)
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if (ia->ia_ifp == ifp)
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break;
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switch (cmd) {
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case SIOCGIFADDR:
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if (ia == (struct ipx_ifaddr *)0)
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return (EADDRNOTAVAIL);
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*(struct sockaddr_ipx *)&ifr->ifr_addr = ia->ia_addr;
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return (0);
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case SIOCGIFBRDADDR:
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if (ia == (struct ipx_ifaddr *)0)
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return (EADDRNOTAVAIL);
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if ((ifp->if_flags & IFF_BROADCAST) == 0)
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return (EINVAL);
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*(struct sockaddr_ipx *)&ifr->ifr_dstaddr = ia->ia_broadaddr;
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return (0);
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case SIOCGIFDSTADDR:
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if (ia == (struct ipx_ifaddr *)0)
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return (EADDRNOTAVAIL);
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if ((ifp->if_flags & IFF_POINTOPOINT) == 0)
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return (EINVAL);
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*(struct sockaddr_ipx *)&ifr->ifr_dstaddr = ia->ia_dstaddr;
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return (0);
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}
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if ((so->so_state & SS_PRIV) == 0)
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return (EPERM);
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switch (cmd) {
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case SIOCAIFADDR:
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case SIOCDIFADDR:
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if (ifra->ifra_addr.sipx_family == AF_IPX)
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for (oia = ia; ia; ia = ia->ia_next) {
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if (ia->ia_ifp == ifp &&
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ipx_neteq(ia->ia_addr.sipx_addr,
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ifra->ifra_addr.sipx_addr))
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break;
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}
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if (cmd == SIOCDIFADDR && ia == 0)
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return (EADDRNOTAVAIL);
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/* FALLTHROUGH */
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case SIOCSIFADDR:
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case SIOCSIFDSTADDR:
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if (ia == (struct ipx_ifaddr *)0) {
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oia = (struct ipx_ifaddr *)
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malloc(sizeof *ia, M_IFADDR, M_WAITOK);
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if (oia == (struct ipx_ifaddr *)NULL)
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return (ENOBUFS);
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bzero((caddr_t)oia, sizeof(*oia));
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if ((ia = ipx_ifaddr)) {
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for ( ; ia->ia_next; ia = ia->ia_next)
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;
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ia->ia_next = oia;
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} else
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ipx_ifaddr = oia;
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ia = oia;
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if ((ifa = ifp->if_addrlist)) {
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for ( ; ifa->ifa_next; ifa = ifa->ifa_next)
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;
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ifa->ifa_next = (struct ifaddr *) ia;
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} else
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ifp->if_addrlist = (struct ifaddr *) ia;
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ia->ia_ifp = ifp;
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ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr;
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ia->ia_ifa.ifa_netmask =
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(struct sockaddr *)&ipx_netmask;
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ia->ia_ifa.ifa_dstaddr =
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(struct sockaddr *)&ia->ia_dstaddr;
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if (ifp->if_flags & IFF_BROADCAST) {
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ia->ia_broadaddr.sipx_family = AF_IPX;
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ia->ia_broadaddr.sipx_len = sizeof(ia->ia_addr);
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ia->ia_broadaddr.sipx_addr.x_host = ipx_broadhost;
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}
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ipx_interfaces++;
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}
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}
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switch (cmd) {
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case SIOCSIFDSTADDR:
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if ((ifp->if_flags & IFF_POINTOPOINT) == 0)
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return (EINVAL);
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if (ia->ia_flags & IFA_ROUTE) {
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rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
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ia->ia_flags &= ~IFA_ROUTE;
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}
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if (ifp->if_ioctl) {
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error = (*ifp->if_ioctl)(ifp, SIOCSIFDSTADDR, (void *)ia);
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if (error)
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return (error);
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}
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*(struct sockaddr *)&ia->ia_dstaddr = ifr->ifr_dstaddr;
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return (0);
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case SIOCSIFADDR:
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return (ipx_ifinit(ifp, ia,
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(struct sockaddr_ipx *)&ifr->ifr_addr, 1));
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case SIOCDIFADDR:
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ipx_ifscrub(ifp, ia);
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if ((ifa = ifp->if_addrlist) == (struct ifaddr *)ia)
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ifp->if_addrlist = ifa->ifa_next;
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else {
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while (ifa->ifa_next &&
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(ifa->ifa_next != (struct ifaddr *)ia))
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ifa = ifa->ifa_next;
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if (ifa->ifa_next)
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ifa->ifa_next = ((struct ifaddr *)ia)->ifa_next;
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else
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printf("Couldn't unlink ipxifaddr from ifp\n");
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}
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oia = ia;
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if (oia == (ia = ipx_ifaddr)) {
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ipx_ifaddr = ia->ia_next;
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} else {
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while (ia->ia_next && (ia->ia_next != oia)) {
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ia = ia->ia_next;
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}
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if (ia->ia_next)
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ia->ia_next = oia->ia_next;
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else
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printf("Didn't unlink ipxifadr from list\n");
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}
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IFAFREE((&oia->ia_ifa));
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if (0 == --ipx_interfaces) {
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/*
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* We reset to virginity and start all over again
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*/
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ipx_thishost = ipx_zerohost;
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}
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return (0);
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case SIOCAIFADDR:
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dstIsNew = 0; hostIsNew = 1;
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if (ia->ia_addr.sipx_family == AF_IPX) {
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if (ifra->ifra_addr.sipx_len == 0) {
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ifra->ifra_addr = ia->ia_addr;
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hostIsNew = 0;
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} else if (ipx_neteq(ifra->ifra_addr.sipx_addr,
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ia->ia_addr.sipx_addr))
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hostIsNew = 0;
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}
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if ((ifp->if_flags & IFF_POINTOPOINT) &&
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(ifra->ifra_dstaddr.sipx_family == AF_IPX)) {
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if (hostIsNew == 0)
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ipx_ifscrub(ifp, ia);
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ia->ia_dstaddr = ifra->ifra_dstaddr;
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dstIsNew = 1;
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}
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if (ifra->ifra_addr.sipx_family == AF_IPX &&
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(hostIsNew || dstIsNew))
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error = ipx_ifinit(ifp, ia, &ifra->ifra_addr, 0);
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return (error);
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default:
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if (ifp->if_ioctl == 0)
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return (EOPNOTSUPP);
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return ((*ifp->if_ioctl)(ifp, cmd, data));
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}
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}
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/*
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* Delete any previous route for an old address.
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*/
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void
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ipx_ifscrub(ifp, ia)
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register struct ifnet *ifp;
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register struct ipx_ifaddr *ia;
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{
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if (ia->ia_flags & IFA_ROUTE) {
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if (ifp->if_flags & IFF_POINTOPOINT) {
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rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
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} else
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rtinit(&(ia->ia_ifa), (int)RTM_DELETE, 0);
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ia->ia_flags &= ~IFA_ROUTE;
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}
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}
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/*
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* Initialize an interface's internet address
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* and routing table entry.
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*/
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int
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ipx_ifinit(ifp, ia, sipx, scrub)
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register struct ifnet *ifp;
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register struct ipx_ifaddr *ia;
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register struct sockaddr_ipx *sipx;
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int scrub;
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{
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struct sockaddr_ipx oldaddr;
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register union ipx_host *h = &ia->ia_addr.sipx_addr.x_host;
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int s = splimp(), error;
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/*
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* Set up new addresses.
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*/
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oldaddr = ia->ia_addr;
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ia->ia_addr = *sipx;
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/*
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* The convention we shall adopt for naming is that
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* a supplied address of zero means that "we don't care".
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* if there is a single interface, use the address of that
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* interface as our 6 byte host address.
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* if there are multiple interfaces, use any address already
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* used.
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*
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* Give the interface a chance to initialize
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* if this is its first address,
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* and to validate the address if necessary.
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*/
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if (ipx_hosteqnh(ipx_thishost, ipx_zerohost)) {
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if (ifp->if_ioctl &&
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(error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, (void *)ia))) {
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ia->ia_addr = oldaddr;
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splx(s);
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return (error);
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}
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ipx_thishost = *h;
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} else if (ipx_hosteqnh(sipx->sipx_addr.x_host, ipx_zerohost)
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|| ipx_hosteqnh(sipx->sipx_addr.x_host, ipx_thishost)) {
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*h = ipx_thishost;
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if (ifp->if_ioctl &&
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(error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, (void *)ia))) {
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ia->ia_addr = oldaddr;
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splx(s);
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return (error);
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}
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if (!ipx_hosteqnh(ipx_thishost,*h)) {
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ia->ia_addr = oldaddr;
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splx(s);
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return (EINVAL);
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}
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} else {
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ia->ia_addr = oldaddr;
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splx(s);
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return (EINVAL);
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}
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ia->ia_ifa.ifa_metric = ifp->if_metric;
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/*
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* Add route for the network.
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*/
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if (scrub) {
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ia->ia_ifa.ifa_addr = (struct sockaddr *)&oldaddr;
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ipx_ifscrub(ifp, ia);
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ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr;
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}
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if (ifp->if_flags & IFF_POINTOPOINT)
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rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_HOST|RTF_UP);
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else {
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ia->ia_broadaddr.sipx_addr.x_net = ia->ia_addr.sipx_addr.x_net;
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rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_UP);
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}
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ia->ia_flags |= IFA_ROUTE;
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return (0);
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}
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/*
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* Return address info for specified internet network.
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*/
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struct ipx_ifaddr *
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ipx_iaonnetof(dst)
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register struct ipx_addr *dst;
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{
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register struct ipx_ifaddr *ia;
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register struct ipx_addr *compare;
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register struct ifnet *ifp;
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struct ipx_ifaddr *ia_maybe = 0;
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union ipx_net net = dst->x_net;
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for (ia = ipx_ifaddr; ia; ia = ia->ia_next) {
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if ((ifp = ia->ia_ifp)) {
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if (ifp->if_flags & IFF_POINTOPOINT) {
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compare = &satoipx_addr(ia->ia_dstaddr);
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if (ipx_hosteq(*dst, *compare))
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return (ia);
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if (ipx_neteqnn(net, ia->ia_addr.sipx_addr.x_net))
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ia_maybe = ia;
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} else {
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if (ipx_neteqnn(net, ia->ia_addr.sipx_addr.x_net))
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return (ia);
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}
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}
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}
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return (ia_maybe);
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}
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#endif
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