Reviewed by: julian and jhay@mikom.csir.co.za

Submitted by:	Mike Mitchell, supervisor@alb.asctmd.com

This is a bulk mport of Mike's IPX/SPX protocol stacks and all the
related gunf that goes with it..
it is not guaranteed to work 100% correctly at this time
but as we had several people trying to work on it
I figured it would be better to get it checked in so
they could all get teh same thing to work on..

Mikes been using it for a year or so
but on 2.0

more changes and stuff will be merged in from other developers now that this is in.

Mike Mitchell, Network Engineer
AMTECH Systems Corporation, Technology and Manufacturing
8600 Jefferson Street, Albuquerque, New Mexico 87113 (505) 856-8000
supervisor@alb.asctmd.com

1 files changed, 159 insertions, 0 deletions

diff --git a/sys/netipx/ipx_outputfl.c b/sys/netipx/ipx_outputfl.c
new file mode 100644
index 0000000..74fa9b5
--- /dev/null
+++ b/sys/netipx/ipx_outputfl.c
@@ -0,0 +1,159 @@
+/*
+ * 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.
+ *
+ *	@(#)ipx_outputfl.c
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/malloc.h>
+#include <sys/mbuf.h>
+#include <sys/errno.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+
+#include <net/if.h>
+#include <net/route.h>
+
+#include <netipx/ipx.h>
+#include <netipx/ipx_if.h>
+#include <netipx/ipx_var.h>
+
+#ifdef vax
+#include <machine/mtpr.h>
+#endif
+
+int ipx_hold_output = 0;
+int ipx_copy_output = 0;
+int ipx_outputfl_cnt = 0;
+struct mbuf *ipx_lastout;
+
+int
+ipx_outputfl(m0, ro, flags)
+	struct mbuf *m0;
+	struct route *ro;
+	int flags;
+{
+	register struct ipx *ipx = mtod(m0, struct ipx *);
+	register struct ifnet *ifp = 0;
+	int error = 0;
+	struct sockaddr_ipx *dst;
+	struct route ipxroute;
+
+	if (ipx_hold_output) {
+		if (ipx_lastout) {
+			(void)m_free(ipx_lastout);
+		}
+		ipx_lastout = m_copy(m0, 0, (int)M_COPYALL);
+	}
+	/*
+	 * Route packet.
+	 */
+	if (ro == 0) {
+		ro = &ipxroute;
+		bzero((caddr_t)ro, sizeof (*ro));
+	}
+	dst = (struct sockaddr_ipx *)&ro->ro_dst;
+	if (ro->ro_rt == 0) {
+		dst->sipx_family = AF_IPX;
+		dst->sipx_len = sizeof (*dst);
+		dst->sipx_addr = ipx->ipx_dna;
+		dst->sipx_addr.x_port = 0;
+		/*
+		 * If routing to interface only,
+		 * short circuit routing lookup.
+		 */
+		if (flags & IPX_ROUTETOIF) {
+			struct ipx_ifaddr *ia = ipx_iaonnetof(&ipx->ipx_dna);
+
+			if (ia == 0) {
+				error = ENETUNREACH;
+				goto bad;
+			}
+			ifp = ia->ia_ifp;
+			goto gotif;
+		}
+		rtalloc(ro);
+	} else if ((ro->ro_rt->rt_flags & RTF_UP) == 0) {
+		/*
+		 * The old route has gone away; try for a new one.
+		 */
+		rtfree(ro->ro_rt);
+		ro->ro_rt = NULL;
+		rtalloc(ro);
+	}
+	if (ro->ro_rt == 0 || (ifp = ro->ro_rt->rt_ifp) == 0) {
+		error = ENETUNREACH;
+		goto bad;
+	}
+	ro->ro_rt->rt_use++;
+	if (ro->ro_rt->rt_flags & (RTF_GATEWAY|RTF_HOST))
+		dst = (struct sockaddr_ipx *)ro->ro_rt->rt_gateway;
+gotif:
+	/*
+	 * Look for multicast addresses and
+	 * and verify user is allowed to send
+	 * such a packet.
+	 */
+	if (dst->sipx_addr.x_host.c_host[0]&1) {
+		if ((ifp->if_flags & IFF_BROADCAST) == 0) {
+			error = EADDRNOTAVAIL;
+			goto bad;
+		}
+		if ((flags & IPX_ALLOWBROADCAST) == 0) {
+			error = EACCES;
+			goto bad;
+		}
+	}
+
+	if (htons(ipx->ipx_len) <= ifp->if_mtu) {
+		ipx_outputfl_cnt++;
+		if (ipx_copy_output) {
+			ipx_watch_output(m0, ifp);
+		}
+		error = (*ifp->if_output)(ifp, m0,
+					(struct sockaddr *)dst, ro->ro_rt);
+		goto done;
+	} else error = EMSGSIZE;
+bad:
+	if (ipx_copy_output) {
+		ipx_watch_output(m0, ifp);
+	}
+	m_freem(m0);
+done:
+	if (ro == &ipxroute && (flags & IPX_ROUTETOIF) == 0 && ro->ro_rt) {
+		RTFREE(ro->ro_rt);
+		ro->ro_rt = 0;
+	}
+	return (error);
+}