[src/netbsd-1-5]: src/sys/net Pull up revision 1.19 (requested by itojun):

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

details:   https://anonhg.NetBSD.org/src/rev/81fed01e3419
branches:  netbsd-1-5
changeset: 491696:81fed01e3419
user:      he <he%NetBSD.org@localhost>
date:      Wed May 09 19:37:00 2001 +0000

description:
Pull up revision 1.19 (requested by itojun):
  Correct faith prefix determintaion.

diffstat:

 sys/net/if_faith.c |  43 ++++++++++++++++++++++++++++++++++++++++---
 1 files changed, 40 insertions(+), 3 deletions(-)

diffs (83 lines):

diff -r ea5be9df3183 -r 81fed01e3419 sys/net/if_faith.c
--- a/sys/net/if_faith.c        Wed May 09 19:36:42 2001 +0000
+++ b/sys/net/if_faith.c        Wed May 09 19:37:00 2001 +0000
@@ -1,4 +1,5 @@
-/*     $NetBSD: if_faith.c,v 1.11 2000/03/30 09:45:35 augustss Exp $   */
+/*     $NetBSD: if_faith.c,v 1.11.4.1 2001/05/09 19:37:00 he Exp $     */
+/*     $KAME: if_faith.c,v 1.21 2001/02/20 07:59:26 itojun Exp $       */
 
 /*
  * Copyright (c) 1982, 1986, 1993
@@ -33,7 +34,7 @@
  * SUCH DAMAGE.
  */
 /*
- * derived from 
+ * derived from
  *     @(#)if_loop.c   8.1 (Berkeley) 6/10/93
  * Id: if_loop.c,v 1.22 1996/06/19 16:24:10 wollman Exp
  */
@@ -61,6 +62,7 @@
 #include <net/netisr.h>
 #include <net/route.h>
 #include <net/bpf.h>
+#include <net/if_faith.h>
 
 #ifdef INET
 #include <netinet/in.h>
@@ -75,6 +77,7 @@
 #endif
 #include <netinet6/in6_var.h>
 #include <netinet/ip6.h>
+#include <netinet6/ip6_var.h>
 #endif
 
 #include "bpfilter.h"
@@ -224,7 +227,7 @@
                 * should be at least twice the MTU plus a little more for
                 * overhead.
                 */
-               rt->rt_rmx.rmx_recvpipe = 
+               rt->rt_rmx.rmx_recvpipe =
                        rt->rt_rmx.rmx_sendpipe = 3 * FAITHMTU;
        }
 }
@@ -290,4 +293,38 @@
        }
        return (error);
 }
+
+/*
+ * XXX could be slow
+ * XXX could be layer violation to call sys/net from sys/netinet6
+ */
+int
+faithprefix(in6)
+       struct in6_addr *in6;
+{
+       struct rtentry *rt;
+       struct sockaddr_in6 sin6;
+       int ret;
+
+       if (ip6_keepfaith == 0)
+               return 0;
+
+       bzero(&sin6, sizeof(sin6));
+       sin6.sin6_family = AF_INET6;
+       sin6.sin6_len = sizeof(struct sockaddr_in6);
+       sin6.sin6_addr = *in6;
+#ifdef __FreeBSD__
+       rt = rtalloc1((struct sockaddr *)&sin6, 0, 0UL);
+#else
+       rt = rtalloc1((struct sockaddr *)&sin6, 0);
+#endif
+       if (rt && rt->rt_ifp && rt->rt_ifp->if_type == IFT_FAITH &&
+           (rt->rt_ifp->if_flags & IFF_UP) != 0)
+               ret = 1;
+       else
+               ret = 0;
+       if (rt)
+               RTFREE(rt);
+       return ret;
+}
 #endif /* NFAITH > 0 */