2 * Copyright (c) 1995, Mike Mitchell
3 * Copyright (c) 1984, 1985, 1986, 1987, 1993
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16 * This product includes software developed by the University of
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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 1.8 2006/01/14 13:36:40 swildner 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(struct mbuf *m0, struct route *ro, int flags)
57 struct ipx *ipx = mtod(m0, struct ipx *);
58 struct ifnet *ifp = NULL;
60 struct sockaddr_ipx *dst;
61 struct route ipxroute;
68 bzero((caddr_t)ro, sizeof(*ro));
70 dst = (struct sockaddr_ipx *)&ro->ro_dst;
71 if (ro->ro_rt == NULL) {
72 dst->sipx_family = AF_IPX;
73 dst->sipx_len = sizeof(*dst);
74 dst->sipx_addr = ipx->ipx_dna;
75 dst->sipx_addr.x_port = 0;
77 * If routing to interface only,
78 * short circuit routing lookup.
80 if (flags & IPX_ROUTETOIF) {
81 struct ipx_ifaddr *ia = ipx_iaonnetof(&ipx->ipx_dna);
84 ipxstat.ipxs_noroute++;
92 } else if ((ro->ro_rt->rt_flags & RTF_UP) == 0) {
94 * The old route has gone away; try for a new one.
100 if (ro->ro_rt == NULL || (ifp = ro->ro_rt->rt_ifp) == NULL) {
101 ipxstat.ipxs_noroute++;
106 if (ro->ro_rt->rt_flags & (RTF_GATEWAY|RTF_HOST))
107 dst = (struct sockaddr_ipx *)ro->ro_rt->rt_gateway;
110 * Look for multicast addresses and
111 * and verify user is allowed to send
114 if (dst->sipx_addr.x_host.c_host[0]&1) {
115 if ((ifp->if_flags & (IFF_BROADCAST | IFF_LOOPBACK)) == 0) {
116 error = EADDRNOTAVAIL;
119 if ((flags & IPX_ALLOWBROADCAST) == 0) {
123 m0->m_flags |= M_BCAST;
126 if (htons(ipx->ipx_len) <= ifp->if_mtu) {
127 ipxstat.ipxs_localout++;
128 if (ipx_copy_output) {
129 ipx_watch_output(m0, ifp);
131 lwkt_serialize_enter(ifp->if_serializer);
132 error = (*ifp->if_output)(ifp, m0,
133 (struct sockaddr *)dst, ro->ro_rt);
134 lwkt_serialize_exit(ifp->if_serializer);
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.
159 ipx_output_type20(struct mbuf *m)
162 union ipx_net *nbnet;
163 struct ipx_ifaddr *ia, *tia = NULL;
168 struct sockaddr_ipx dst;
171 * We have to get to the 32 bytes after the ipx header also, so
172 * that we can fill in the network address of the receiving
175 if ((m->m_flags & M_EXT || m->m_len < (sizeof(struct ipx) + 32)) &&
176 (m = m_pullup(m, sizeof(struct ipx) + 32)) == NULL) {
177 ipxstat.ipxs_toosmall++;
180 ipx = mtod(m, struct ipx *);
181 nbnet = (union ipx_net *)(ipx + 1);
183 if (ipx->ipx_tc >= 8)
186 * Now see if we have already seen this.
188 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
189 if(ia->ia_ifa.ifa_ifp == m->m_pkthdr.rcvif) {
193 for (i=0;i<ipx->ipx_tc;i++,nbnet++)
194 if(ipx_neteqnn(ia->ia_addr.sipx_addr.x_net,
199 * Don't route the packet if the interface where it come from
200 * does not have an IPX address.
206 * Add our receiving interface to the list.
208 nbnet = (union ipx_net *)(ipx + 1);
209 nbnet += ipx->ipx_tc;
210 *nbnet = tia->ia_addr.sipx_addr.x_net;
213 * Increment the hop count.
216 ipxstat.ipxs_forward++;
219 * Send to all directly connected ifaces not in list and
220 * not to the one it came from.
222 m->m_flags &= ~M_BCAST;
223 bzero(&dst, sizeof(dst));
224 dst.sipx_family = AF_IPX;
226 dst.sipx_addr.x_host = ipx_broadhost;
228 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
229 if(ia->ia_ifa.ifa_ifp != m->m_pkthdr.rcvif) {
230 nbnet = (union ipx_net *)(ipx + 1);
231 for (i=0;i<ipx->ipx_tc;i++,nbnet++)
232 if(ipx_neteqnn(ia->ia_addr.sipx_addr.x_net,
237 * Insert the net address of the dest net and
238 * calculate the new checksum if needed.
240 ifp = ia->ia_ifa.ifa_ifp;
241 dst.sipx_addr.x_net = ia->ia_addr.sipx_addr.x_net;
242 ipx->ipx_dna.x_net = dst.sipx_addr.x_net;
243 if(ipx->ipx_sum != 0xffff)
244 ipx->ipx_sum = ipx_cksum(m, ntohs(ipx->ipx_len));
246 m1 = m_copym(m, 0, M_COPYALL, MB_DONTWAIT);
248 lwkt_serialize_enter(ifp->if_serializer);
249 error = (*ifp->if_output)(ifp, m1,
250 (struct sockaddr *)&dst, NULL);
251 lwkt_serialize_exit(ifp->if_serializer);
252 /* XXX ipxstat.ipxs_localout++; */