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.
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7 * modification, are permitted provided that the following conditions
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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.
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19 * may be used to endorse or promote products derived from this software
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29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * $FreeBSD: src/sys/netipx/ipx_outputfl.c,v 1.14.2.1 2000/05/01 01:10:24 bp Exp $
37 * $DragonFly: src/sys/netproto/ipx/ipx_outputfl.c,v 1.5 2004/06/02 14:43:03 eirikn Exp $
40 #include <sys/param.h>
41 #include <sys/systm.h>
43 #include <sys/socket.h>
46 #include <net/route.h>
53 #include <machine/mtpr.h>
56 static int ipx_copy_output = 0;
59 ipx_outputfl(m0, ro, flags)
64 struct ipx *ipx = mtod(m0, struct ipx *);
65 struct ifnet *ifp = NULL;
67 struct sockaddr_ipx *dst;
68 struct route ipxroute;
75 bzero((caddr_t)ro, sizeof(*ro));
77 dst = (struct sockaddr_ipx *)&ro->ro_dst;
78 if (ro->ro_rt == NULL) {
79 dst->sipx_family = AF_IPX;
80 dst->sipx_len = sizeof(*dst);
81 dst->sipx_addr = ipx->ipx_dna;
82 dst->sipx_addr.x_port = 0;
84 * If routing to interface only,
85 * short circuit routing lookup.
87 if (flags & IPX_ROUTETOIF) {
88 struct ipx_ifaddr *ia = ipx_iaonnetof(&ipx->ipx_dna);
91 ipxstat.ipxs_noroute++;
99 } else if ((ro->ro_rt->rt_flags & RTF_UP) == 0) {
101 * The old route has gone away; try for a new one.
107 if (ro->ro_rt == NULL || (ifp = ro->ro_rt->rt_ifp) == NULL) {
108 ipxstat.ipxs_noroute++;
113 if (ro->ro_rt->rt_flags & (RTF_GATEWAY|RTF_HOST))
114 dst = (struct sockaddr_ipx *)ro->ro_rt->rt_gateway;
117 * Look for multicast addresses and
118 * and verify user is allowed to send
121 if (dst->sipx_addr.x_host.c_host[0]&1) {
122 if ((ifp->if_flags & (IFF_BROADCAST | IFF_LOOPBACK)) == 0) {
123 error = EADDRNOTAVAIL;
126 if ((flags & IPX_ALLOWBROADCAST) == 0) {
130 m0->m_flags |= M_BCAST;
133 if (htons(ipx->ipx_len) <= ifp->if_mtu) {
134 ipxstat.ipxs_localout++;
135 if (ipx_copy_output) {
136 ipx_watch_output(m0, ifp);
138 error = (*ifp->if_output)(ifp, m0,
139 (struct sockaddr *)dst, ro->ro_rt);
142 ipxstat.ipxs_mtutoosmall++;
146 if (ipx_copy_output) {
147 ipx_watch_output(m0, ifp);
151 if (ro == &ipxroute && (flags & IPX_ROUTETOIF) == 0 &&
160 * This will broadcast the type 20 (Netbios) packet to all the interfaces
161 * that have ipx configured and isn't in the list yet.
168 union ipx_net *nbnet;
169 struct ipx_ifaddr *ia, *tia = NULL;
174 struct sockaddr_ipx dst;
177 * We have to get to the 32 bytes after the ipx header also, so
178 * that we can fill in the network address of the receiving
181 if ((m->m_flags & M_EXT || m->m_len < (sizeof(struct ipx) + 32)) &&
182 (m = m_pullup(m, sizeof(struct ipx) + 32)) == NULL) {
183 ipxstat.ipxs_toosmall++;
186 ipx = mtod(m, struct ipx *);
187 nbnet = (union ipx_net *)(ipx + 1);
189 if (ipx->ipx_tc >= 8)
192 * Now see if we have already seen this.
194 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
195 if(ia->ia_ifa.ifa_ifp == m->m_pkthdr.rcvif) {
199 for (i=0;i<ipx->ipx_tc;i++,nbnet++)
200 if(ipx_neteqnn(ia->ia_addr.sipx_addr.x_net,
205 * Don't route the packet if the interface where it come from
206 * does not have an IPX address.
212 * Add our receiving interface to the list.
214 nbnet = (union ipx_net *)(ipx + 1);
215 nbnet += ipx->ipx_tc;
216 *nbnet = tia->ia_addr.sipx_addr.x_net;
219 * Increment the hop count.
222 ipxstat.ipxs_forward++;
225 * Send to all directly connected ifaces not in list and
226 * not to the one it came from.
228 m->m_flags &= ~M_BCAST;
229 bzero(&dst, sizeof(dst));
230 dst.sipx_family = AF_IPX;
232 dst.sipx_addr.x_host = ipx_broadhost;
234 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
235 if(ia->ia_ifa.ifa_ifp != m->m_pkthdr.rcvif) {
236 nbnet = (union ipx_net *)(ipx + 1);
237 for (i=0;i<ipx->ipx_tc;i++,nbnet++)
238 if(ipx_neteqnn(ia->ia_addr.sipx_addr.x_net,
243 * Insert the net address of the dest net and
244 * calculate the new checksum if needed.
246 ifp = ia->ia_ifa.ifa_ifp;
247 dst.sipx_addr.x_net = ia->ia_addr.sipx_addr.x_net;
248 ipx->ipx_dna.x_net = dst.sipx_addr.x_net;
249 if(ipx->ipx_sum != 0xffff)
250 ipx->ipx_sum = ipx_cksum(m, ntohs(ipx->ipx_len));
252 m1 = m_copym(m, 0, M_COPYALL, MB_DONTWAIT);
254 error = (*ifp->if_output)(ifp, m1,
255 (struct sockaddr *)&dst, NULL);
256 /* XXX ipxstat.ipxs_localout++; */