freebsd-dev/sys/netipx/ipx.c

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/*-
* Copyright (c) 1995, Mike Mitchell
* Copyright (c) 1984, 1985, 1986, 1987, 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.
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*
* @(#)ipx.c
*/
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#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/sockio.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/route.h>
#include <netipx/ipx.h>
#include <netipx/ipx_if.h>
#include <netipx/ipx_var.h>
/*
* XXXRW: Requires synchronization.
*/
struct ipx_ifaddr *ipx_ifaddr;
static void ipx_ifscrub(struct ifnet *ifp, struct ipx_ifaddr *ia);
static int ipx_ifinit(struct ifnet *ifp, struct ipx_ifaddr *ia,
struct sockaddr_ipx *sipx, int scrub);
/*
* Generic internet control operations (ioctl's).
*/
int
ipx_control(so, cmd, data, ifp, td)
struct socket *so;
u_long cmd;
caddr_t data;
register struct ifnet *ifp;
struct thread *td;
{
register struct ifreq *ifr = (struct ifreq *)data;
register struct ipx_aliasreq *ifra = (struct ipx_aliasreq *)data;
register struct ipx_ifaddr *ia;
struct ifaddr *ifa;
struct ipx_ifaddr *oia;
int dstIsNew, hostIsNew;
int error = 0;
/*
* Find address for this interface, if it exists.
*/
if (ifp == NULL)
return (EADDRNOTAVAIL);
for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
if (ia->ia_ifp == ifp)
break;
switch (cmd) {
case SIOCGIFADDR:
if (ia == NULL)
return (EADDRNOTAVAIL);
*(struct sockaddr_ipx *)&ifr->ifr_addr = ia->ia_addr;
return (0);
case SIOCGIFBRDADDR:
if (ia == NULL)
return (EADDRNOTAVAIL);
if ((ifp->if_flags & IFF_BROADCAST) == 0)
return (EINVAL);
*(struct sockaddr_ipx *)&ifr->ifr_dstaddr = ia->ia_broadaddr;
return (0);
case SIOCGIFDSTADDR:
if (ia == NULL)
return (EADDRNOTAVAIL);
if ((ifp->if_flags & IFF_POINTOPOINT) == 0)
return (EINVAL);
*(struct sockaddr_ipx *)&ifr->ifr_dstaddr = ia->ia_dstaddr;
return (0);
}
if (td && (error = suser(td)) != 0)
return (error);
switch (cmd) {
case SIOCAIFADDR:
case SIOCDIFADDR:
if (ifra->ifra_addr.sipx_family == AF_IPX)
for (oia = ia; ia != NULL; ia = ia->ia_next) {
if (ia->ia_ifp == ifp &&
ipx_neteq(ia->ia_addr.sipx_addr,
ifra->ifra_addr.sipx_addr))
break;
}
if (cmd == SIOCDIFADDR && ia == NULL)
return (EADDRNOTAVAIL);
/* FALLTHROUGH */
case SIOCSIFADDR:
case SIOCSIFDSTADDR:
if (ia == NULL) {
oia = (struct ipx_ifaddr *)
malloc(sizeof(*ia), M_IFADDR,
M_WAITOK | M_ZERO);
if (oia == NULL)
return (ENOBUFS);
if ((ia = ipx_ifaddr) != NULL) {
for ( ; ia->ia_next != NULL; ia = ia->ia_next)
;
ia->ia_next = oia;
} else
ipx_ifaddr = oia;
ia = oia;
ifa = (struct ifaddr *)ia;
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IFA_LOCK_INIT(ifa);
ifa->ifa_refcnt = 1;
TAILQ_INSERT_TAIL(&ifp->if_addrhead, ifa, ifa_link);
ia->ia_ifp = ifp;
ifa->ifa_addr = (struct sockaddr *)&ia->ia_addr;
ifa->ifa_netmask = (struct sockaddr *)&ipx_netmask;
ifa->ifa_dstaddr = (struct sockaddr *)&ia->ia_dstaddr;
if (ifp->if_flags & IFF_BROADCAST) {
ia->ia_broadaddr.sipx_family = AF_IPX;
ia->ia_broadaddr.sipx_len = sizeof(ia->ia_addr);
ia->ia_broadaddr.sipx_addr.x_host = ipx_broadhost;
}
}
}
switch (cmd) {
case SIOCSIFDSTADDR:
if ((ifp->if_flags & IFF_POINTOPOINT) == 0)
return (EINVAL);
if (ia->ia_flags & IFA_ROUTE) {
rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
ia->ia_flags &= ~IFA_ROUTE;
}
if (ifp->if_ioctl) {
error = (*ifp->if_ioctl)(ifp, SIOCSIFDSTADDR, (void *)ia);
if (error)
return (error);
}
*(struct sockaddr *)&ia->ia_dstaddr = ifr->ifr_dstaddr;
return (0);
case SIOCSIFADDR:
return (ipx_ifinit(ifp, ia,
(struct sockaddr_ipx *)&ifr->ifr_addr, 1));
case SIOCDIFADDR:
ipx_ifscrub(ifp, ia);
ifa = (struct ifaddr *)ia;
TAILQ_REMOVE(&ifp->if_addrhead, ifa, ifa_link);
oia = ia;
if (oia == (ia = ipx_ifaddr)) {
ipx_ifaddr = ia->ia_next;
} else {
while (ia->ia_next && (ia->ia_next != oia)) {
ia = ia->ia_next;
}
if (ia->ia_next)
ia->ia_next = oia->ia_next;
else
printf("Didn't unlink ipxifadr from list\n");
}
IFAFREE((&oia->ia_ifa));
return (0);
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case SIOCAIFADDR:
dstIsNew = 0;
hostIsNew = 1;
if (ia->ia_addr.sipx_family == AF_IPX) {
if (ifra->ifra_addr.sipx_len == 0) {
ifra->ifra_addr = ia->ia_addr;
hostIsNew = 0;
} else if (ipx_neteq(ifra->ifra_addr.sipx_addr,
ia->ia_addr.sipx_addr))
hostIsNew = 0;
}
if ((ifp->if_flags & IFF_POINTOPOINT) &&
(ifra->ifra_dstaddr.sipx_family == AF_IPX)) {
if (hostIsNew == 0)
ipx_ifscrub(ifp, ia);
ia->ia_dstaddr = ifra->ifra_dstaddr;
dstIsNew = 1;
}
if (ifra->ifra_addr.sipx_family == AF_IPX &&
(hostIsNew || dstIsNew))
error = ipx_ifinit(ifp, ia, &ifra->ifra_addr, 0);
return (error);
default:
if (ifp->if_ioctl == NULL)
return (EOPNOTSUPP);
return ((*ifp->if_ioctl)(ifp, cmd, data));
}
}
/*
* Delete any previous route for an old address.
*/
static void
ipx_ifscrub(ifp, ia)
register struct ifnet *ifp;
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register struct ipx_ifaddr *ia;
{
if (ia->ia_flags & IFA_ROUTE) {
if (ifp->if_flags & IFF_POINTOPOINT) {
rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
} else
rtinit(&(ia->ia_ifa), (int)RTM_DELETE, 0);
ia->ia_flags &= ~IFA_ROUTE;
}
}
/*
* Initialize an interface's internet address
* and routing table entry.
*/
static int
ipx_ifinit(ifp, ia, sipx, scrub)
register struct ifnet *ifp;
register struct ipx_ifaddr *ia;
register struct sockaddr_ipx *sipx;
int scrub;
{
struct sockaddr_ipx oldaddr;
int s = splimp(), error;
/*
* Set up new addresses.
*/
oldaddr = ia->ia_addr;
ia->ia_addr = *sipx;
/*
* The convention we shall adopt for naming is that
* a supplied address of zero means that "we don't care".
* Use the MAC address of the interface. If it is an
* interface without a MAC address, like a serial line, the
* address must be supplied.
*
* Give the interface a chance to initialize
* if this is its first address,
* and to validate the address if necessary.
*/
if (ifp->if_ioctl != NULL &&
(error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, (void *)ia))) {
ia->ia_addr = oldaddr;
splx(s);
return (error);
}
splx(s);
ia->ia_ifa.ifa_metric = ifp->if_metric;
/*
* Add route for the network.
*/
if (scrub) {
ia->ia_ifa.ifa_addr = (struct sockaddr *)&oldaddr;
ipx_ifscrub(ifp, ia);
ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr;
}
if (ifp->if_flags & IFF_POINTOPOINT)
rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_HOST|RTF_UP);
else {
ia->ia_broadaddr.sipx_addr.x_net = ia->ia_addr.sipx_addr.x_net;
rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_UP);
}
ia->ia_flags |= IFA_ROUTE;
return (0);
}
/*
* Return address info for specified internet network.
*/
struct ipx_ifaddr *
ipx_iaonnetof(dst)
register struct ipx_addr *dst;
{
register struct ipx_ifaddr *ia;
register struct ipx_addr *compare;
register struct ifnet *ifp;
struct ipx_ifaddr *ia_maybe = NULL;
union ipx_net net = dst->x_net;
for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next) {
if ((ifp = ia->ia_ifp) != NULL) {
if (ifp->if_flags & IFF_POINTOPOINT) {
compare = &satoipx_addr(ia->ia_dstaddr);
if (ipx_hosteq(*dst, *compare))
return (ia);
if (ipx_neteqnn(net, ia->ia_addr.sipx_addr.x_net))
ia_maybe = ia;
} else {
if (ipx_neteqnn(net, ia->ia_addr.sipx_addr.x_net))
return (ia);
}
}
}
return (ia_maybe);
}
void
ipx_printhost(addr)
register struct ipx_addr *addr;
{
u_short port;
struct ipx_addr work = *addr;
register char *p; register u_char *q;
register char *net = "", *host = "";
char cport[10], chost[15], cnet[15];
port = ntohs(work.x_port);
if (ipx_nullnet(work) && ipx_nullhost(work)) {
if (port)
printf("*.%x", port);
else
printf("*.*");
return;
}
if (ipx_wildnet(work))
net = "any";
else if (ipx_nullnet(work))
net = "*";
else {
q = work.x_net.c_net;
snprintf(cnet, sizeof(cnet), "%x%x%x%x",
q[0], q[1], q[2], q[3]);
for (p = cnet; *p == '0' && p < cnet + 8; p++)
continue;
net = p;
}
if (ipx_wildhost(work))
host = "any";
else if (ipx_nullhost(work))
host = "*";
else {
q = work.x_host.c_host;
snprintf(chost, sizeof(chost), "%x%x%x%x%x%x",
q[0], q[1], q[2], q[3], q[4], q[5]);
for (p = chost; *p == '0' && p < chost + 12; p++)
continue;
host = p;
}
if (port) {
if (strcmp(host, "*") == 0) {
host = "";
snprintf(cport, sizeof(cport), "%x", port);
} else
snprintf(cport, sizeof(cport), ".%x", port);
} else
*cport = 0;
printf("%s.%s%s", net, host, cport);
}