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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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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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 1.6 2004/07/27 13:50:15 hmp Exp $
40 #include <sys/param.h>
41 #include <sys/systm.h>
43 #include <sys/socket.h>
46 #include <net/route.h>
52 static int ipx_copy_output = 0;
55 ipx_outputfl(m0, ro, flags)
60 struct ipx *ipx = mtod(m0, struct ipx *);
61 struct ifnet *ifp = NULL;
63 struct sockaddr_ipx *dst;
64 struct route ipxroute;
71 bzero((caddr_t)ro, sizeof(*ro));
73 dst = (struct sockaddr_ipx *)&ro->ro_dst;
74 if (ro->ro_rt == NULL) {
75 dst->sipx_family = AF_IPX;
76 dst->sipx_len = sizeof(*dst);
77 dst->sipx_addr = ipx->ipx_dna;
78 dst->sipx_addr.x_port = 0;
80 * If routing to interface only,
81 * short circuit routing lookup.
83 if (flags & IPX_ROUTETOIF) {
84 struct ipx_ifaddr *ia = ipx_iaonnetof(&ipx->ipx_dna);
87 ipxstat.ipxs_noroute++;
95 } else if ((ro->ro_rt->rt_flags & RTF_UP) == 0) {
97 * The old route has gone away; try for a new one.
103 if (ro->ro_rt == NULL || (ifp = ro->ro_rt->rt_ifp) == NULL) {
104 ipxstat.ipxs_noroute++;
109 if (ro->ro_rt->rt_flags & (RTF_GATEWAY|RTF_HOST))
110 dst = (struct sockaddr_ipx *)ro->ro_rt->rt_gateway;
113 * Look for multicast addresses and
114 * and verify user is allowed to send
117 if (dst->sipx_addr.x_host.c_host[0]&1) {
118 if ((ifp->if_flags & (IFF_BROADCAST | IFF_LOOPBACK)) == 0) {
119 error = EADDRNOTAVAIL;
122 if ((flags & IPX_ALLOWBROADCAST) == 0) {
126 m0->m_flags |= M_BCAST;
129 if (htons(ipx->ipx_len) <= ifp->if_mtu) {
130 ipxstat.ipxs_localout++;
131 if (ipx_copy_output) {
132 ipx_watch_output(m0, ifp);
134 error = (*ifp->if_output)(ifp, m0,
135 (struct sockaddr *)dst, ro->ro_rt);
138 ipxstat.ipxs_mtutoosmall++;
142 if (ipx_copy_output) {
143 ipx_watch_output(m0, ifp);
147 if (ro == &ipxroute && (flags & IPX_ROUTETOIF) == 0 &&
156 * This will broadcast the type 20 (Netbios) packet to all the interfaces
157 * that have ipx configured and isn't in the list yet.
164 union ipx_net *nbnet;
165 struct ipx_ifaddr *ia, *tia = NULL;
170 struct sockaddr_ipx dst;
173 * We have to get to the 32 bytes after the ipx header also, so
174 * that we can fill in the network address of the receiving
177 if ((m->m_flags & M_EXT || m->m_len < (sizeof(struct ipx) + 32)) &&
178 (m = m_pullup(m, sizeof(struct ipx) + 32)) == NULL) {
179 ipxstat.ipxs_toosmall++;
182 ipx = mtod(m, struct ipx *);
183 nbnet = (union ipx_net *)(ipx + 1);
185 if (ipx->ipx_tc >= 8)
188 * Now see if we have already seen this.
190 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
191 if(ia->ia_ifa.ifa_ifp == m->m_pkthdr.rcvif) {
195 for (i=0;i<ipx->ipx_tc;i++,nbnet++)
196 if(ipx_neteqnn(ia->ia_addr.sipx_addr.x_net,
201 * Don't route the packet if the interface where it come from
202 * does not have an IPX address.
208 * Add our receiving interface to the list.
210 nbnet = (union ipx_net *)(ipx + 1);
211 nbnet += ipx->ipx_tc;
212 *nbnet = tia->ia_addr.sipx_addr.x_net;
215 * Increment the hop count.
218 ipxstat.ipxs_forward++;
221 * Send to all directly connected ifaces not in list and
222 * not to the one it came from.
224 m->m_flags &= ~M_BCAST;
225 bzero(&dst, sizeof(dst));
226 dst.sipx_family = AF_IPX;
228 dst.sipx_addr.x_host = ipx_broadhost;
230 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
231 if(ia->ia_ifa.ifa_ifp != m->m_pkthdr.rcvif) {
232 nbnet = (union ipx_net *)(ipx + 1);
233 for (i=0;i<ipx->ipx_tc;i++,nbnet++)
234 if(ipx_neteqnn(ia->ia_addr.sipx_addr.x_net,
239 * Insert the net address of the dest net and
240 * calculate the new checksum if needed.
242 ifp = ia->ia_ifa.ifa_ifp;
243 dst.sipx_addr.x_net = ia->ia_addr.sipx_addr.x_net;
244 ipx->ipx_dna.x_net = dst.sipx_addr.x_net;
245 if(ipx->ipx_sum != 0xffff)
246 ipx->ipx_sum = ipx_cksum(m, ntohs(ipx->ipx_len));
248 m1 = m_copym(m, 0, M_COPYALL, MB_DONTWAIT);
250 error = (*ifp->if_output)(ifp, m1,
251 (struct sockaddr *)&dst, NULL);
252 /* XXX ipxstat.ipxs_localout++; */