Add ``show layers'' to see the protocol layering for a link.

1 files changed, 17 insertions, 1 deletions

diff --git a/usr.sbin/ppp/link.c b/usr.sbin/ppp/link.c
index 42c5e0cdd6be..9cc1d51dc408 100644
--- a/usr.sbin/ppp/link.c
+++ b/usr.sbin/ppp/link.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *  $Id: link.c,v 1.9 1999/05/08 11:06:58 brian Exp $
+ *  $Id: link.c,v 1.10 1999/05/12 09:48:51 brian Exp $
  *
  */
 
@@ -64,6 +64,7 @@
 #include "pap.h"
 #include "chap.h"
 #include "cbcp.h"
+#include "command.h"
 
 static void Despatch(struct bundle *, struct link *, struct mbuf *, u_short);
 
@@ -339,3 +340,18 @@ Despatch(struct bundle *bundle, struct link *l, struct mbuf *bp, u_short proto)
     mbuf_Free(bp);
   }
 }
+
+int
+link_ShowLayers(struct cmdargs const *arg)
+{
+  struct link *l = command_ChooseLink(arg);
+  int layer;
+
+  for (layer = l->nlayers; layer; layer--)
+    prompt_Printf(arg->prompt, "%s%s", layer == l->nlayers ? "" : ", ",
+                  l->layer[layer - 1]->name);
+  if (l->nlayers)
+    prompt_Printf(arg->prompt, "\n");
+
+  return 0;
+}