2 * Copyright (c) 1995, Mike Mitchell
3 * Copyright (c) 1984, 1985, 1986, 1987, 1993
4 * The Regents of the University of California. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by the University of
17 * California, Berkeley and its contributors.
18 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 #include <sys/param.h>
40 #include <sys/systm.h>
42 #include <sys/socket.h>
45 #include <net/route.h>
47 #include <netipx/ipx.h>
48 #include <netipx/ipx_if.h>
49 #include <netipx/ipx_var.h>
51 static int ipx_copy_output = 0;
54 ipx_outputfl(m0, ro, flags)
59 register struct ipx *ipx = mtod(m0, struct ipx *);
60 register struct ifnet *ifp = NULL;
62 struct sockaddr_ipx *dst;
63 struct route ipxroute;
70 bzero((caddr_t)ro, sizeof(*ro));
72 dst = (struct sockaddr_ipx *)&ro->ro_dst;
73 if (ro->ro_rt == NULL) {
74 dst->sipx_family = AF_IPX;
75 dst->sipx_len = sizeof(*dst);
76 dst->sipx_addr = ipx->ipx_dna;
77 dst->sipx_addr.x_port = 0;
79 * If routing to interface only,
80 * short circuit routing lookup.
82 if (flags & IPX_ROUTETOIF) {
83 struct ipx_ifaddr *ia = ipx_iaonnetof(&ipx->ipx_dna);
86 ipxstat.ipxs_noroute++;
94 } else if ((ro->ro_rt->rt_flags & RTF_UP) == 0) {
96 * The old route has gone away; try for a new one.
102 if (ro->ro_rt == NULL || (ifp = ro->ro_rt->rt_ifp) == NULL) {
103 ipxstat.ipxs_noroute++;
108 if (ro->ro_rt->rt_flags & (RTF_GATEWAY|RTF_HOST))
109 dst = (struct sockaddr_ipx *)ro->ro_rt->rt_gateway;
112 * Look for multicast addresses and
113 * and verify user is allowed to send
116 if (dst->sipx_addr.x_host.c_host[0]&1) {
117 if ((ifp->if_flags & (IFF_BROADCAST | IFF_LOOPBACK)) == 0) {
118 error = EADDRNOTAVAIL;
121 if ((flags & IPX_ALLOWBROADCAST) == 0) {
125 m0->m_flags |= M_BCAST;
128 if (htons(ipx->ipx_len) <= ifp->if_mtu) {
129 ipxstat.ipxs_localout++;
130 if (ipx_copy_output) {
131 ipx_watch_output(m0, ifp);
133 error = (*ifp->if_output)(ifp, m0,
134 (struct sockaddr *)dst, ro->ro_rt);
137 ipxstat.ipxs_mtutoosmall++;
141 if (ipx_copy_output) {
142 ipx_watch_output(m0, ifp);
146 if (ro == &ipxroute && (flags & IPX_ROUTETOIF) == 0 &&
155 * This will broadcast the type 20 (Netbios) packet to all the interfaces
156 * that have ipx configured and isn't in the list yet.
162 register struct ipx *ipx;
163 union ipx_net *nbnet;
164 struct ipx_ifaddr *ia, *tia = NULL;
169 struct sockaddr_ipx dst;
172 * We have to get to the 32 bytes after the ipx header also, so
173 * that we can fill in the network address of the receiving
176 if ((m->m_flags & M_EXT || m->m_len < (sizeof(struct ipx) + 32)) &&
177 (m = m_pullup(m, sizeof(struct ipx) + 32)) == NULL) {
178 ipxstat.ipxs_toosmall++;
181 ipx = mtod(m, struct ipx *);
182 nbnet = (union ipx_net *)(ipx + 1);
184 if (ipx->ipx_tc >= 8)
187 * Now see if we have already seen this.
189 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
190 if(ia->ia_ifa.ifa_ifp == m->m_pkthdr.rcvif) {
194 for (i=0;i<ipx->ipx_tc;i++,nbnet++)
195 if(ipx_neteqnn(ia->ia_addr.sipx_addr.x_net,
200 * Don't route the packet if the interface where it come from
201 * does not have an IPX address.
207 * Add our receiving interface to the list.
209 nbnet = (union ipx_net *)(ipx + 1);
210 nbnet += ipx->ipx_tc;
211 *nbnet = tia->ia_addr.sipx_addr.x_net;
214 * Increment the hop count.
217 ipxstat.ipxs_forward++;
220 * Send to all directly connected ifaces not in list and
221 * not to the one it came from.
223 m->m_flags &= ~M_BCAST;
224 bzero(&dst, sizeof(dst));
225 dst.sipx_family = AF_IPX;
227 dst.sipx_addr.x_host = ipx_broadhost;
229 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
230 if(ia->ia_ifa.ifa_ifp != m->m_pkthdr.rcvif) {
231 nbnet = (union ipx_net *)(ipx + 1);
232 for (i=0;i<ipx->ipx_tc;i++,nbnet++)
233 if(ipx_neteqnn(ia->ia_addr.sipx_addr.x_net,
238 * Insert the net address of the dest net and
239 * calculate the new checksum if needed.
241 ifp = ia->ia_ifa.ifa_ifp;
242 dst.sipx_addr.x_net = ia->ia_addr.sipx_addr.x_net;
243 ipx->ipx_dna.x_net = dst.sipx_addr.x_net;
244 if(ipx->ipx_sum != 0xffff)
245 ipx->ipx_sum = ipx_cksum(m, ntohs(ipx->ipx_len));
247 m1 = m_copym(m, 0, M_COPYALL, M_DONTWAIT);
249 error = (*ifp->if_output)(ifp, m1,
250 (struct sockaddr *)&dst, NULL);
251 /* XXX ipxstat.ipxs_localout++; */