[src/trunk]: src/sys/net Add routing boilerplate to eco_output, verbatim from...

[bjh21 <bjh21%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/471782235c8b
branches:  trunk
changeset: 514901:471782235c8b
user:      bjh21 <bjh21%NetBSD.org@localhost>
date:      Thu Sep 13 18:01:34 2001 +0000

description:
Add routing boilerplate to eco_output, verbatim from ether_output.
Update copyright notice to include UCB in consequence.

diffstat:

 sys/net/if_ecosubr.c |  73 ++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 71 insertions(+), 2 deletions(-)

diffs (114 lines):

diff -r 75dea12adfb1 -r 471782235c8b sys/net/if_ecosubr.c
--- a/sys/net/if_ecosubr.c      Thu Sep 13 17:19:55 2001 +0000
+++ b/sys/net/if_ecosubr.c      Thu Sep 13 18:01:34 2001 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_ecosubr.c,v 1.1 2001/09/10 23:11:06 bjh21 Exp $     */
+/*     $NetBSD: if_ecosubr.c,v 1.2 2001/09/13 18:01:34 bjh21 Exp $     */
 
 /*-
  * Copyright (c) 2001 Ben Harris
@@ -26,14 +26,49 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
+/*
+ * Copyright (c) 1982, 1989, 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.
+ *
+ *     @(#)if_ethersubr.c      8.2 (Berkeley) 4/4/96
+ */
 
 #include "bpfilter.h"
 
 #include <sys/param.h>
 
-__KERNEL_RCSID(0, "$NetBSD: if_ecosubr.c,v 1.1 2001/09/10 23:11:06 bjh21 Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_ecosubr.c,v 1.2 2001/09/13 18:01:34 bjh21 Exp $");
 
 #include <sys/errno.h>
+#include <sys/kernel.h>
 #include <sys/socket.h>
 #include <sys/sockio.h>
 #include <sys/syslog.h>
@@ -43,6 +78,7 @@
 #include <net/if_dl.h>
 #include <net/if_eco.h>
 #include <net/if_types.h>
+#include <net/route.h>
 
 #if NBPFILTER > 0
 #include <net/bpf.h>
@@ -101,12 +137,45 @@
        struct eco_header ehdr, *eh;
        int error, s;
        struct mbuf *m = m0;
+       struct rtentry *rt;
        int hdrcmplt;
        size_t len;
        ALTQ_DECL(struct altq_pktattr pktattr;)
 
        if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
                senderr(ENETDOWN);
+       if ((rt = rt0) != NULL) {
+               if ((rt->rt_flags & RTF_UP) == 0) {
+                       if ((rt0 = rt = rtalloc1(dst, 1)) != NULL) {
+                               rt->rt_refcnt--;
+                               if (rt->rt_ifp != ifp)
+                                       return (*rt->rt_ifp->if_output)
+                                                       (ifp, m0, dst, rt);
+                       } else 
+                               senderr(EHOSTUNREACH);
+               }
+               if ((rt->rt_flags & RTF_GATEWAY) && dst->sa_family != AF_NS) {
+                       if (rt->rt_gwroute == 0)
+                               goto lookup;
+                       if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) {
+                               rtfree(rt); rt = rt0;
+                       lookup: rt->rt_gwroute = rtalloc1(rt->rt_gateway, 1);
+                               if ((rt = rt->rt_gwroute) == 0)
+                                       senderr(EHOSTUNREACH);
+                               /* the "G" test below also prevents rt == rt0 */
+                               if ((rt->rt_flags & RTF_GATEWAY) ||
+                                   (rt->rt_ifp != ifp)) {
+                                       rt->rt_refcnt--;
+                                       rt0->rt_gwroute = 0;
+                                       senderr(EHOSTUNREACH);
+                               }
+                       }
+               }
+               if (rt->rt_flags & RTF_REJECT)
+                       if (rt->rt_rmx.rmx_expire == 0 ||
+                           time.tv_sec < rt->rt_rmx.rmx_expire)
+                               senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH);
+       }
        /*
         * If the queueing discipline needs packet classification,
         * do it before prepending link headers.