Enable ether name resolution for packet summary lines of IPX packets

(in the src/dst of the CList). In order to do this, I had to:

1. Add a new function, ether_to_str_punct(const guint8*, char) which
	turns a 6-byt ether address into a string, using whatever punctuation
	is passed as the char. If a null char is passed, no separator
	is put between the hex digits. Unresolved IPX addresses look better
	with the ether portion having no punctuation (IMHO)

2. Changed ether_to_str() to call ether_to_str_punct with ':' as the char
	argument. That is, code abstraction.

3. MAXNAMELEN was moved from resolv.c to resolv.h so that packet-ipx.c
	could see it.

4. A new resolve function, get_ether_name_if_known(), returns the resolved name
	of an ether address, or NULL if there is none.  This differs
	from get_ether_name() by returning NULL rather than a text version
	of the ether address.

svn path=/trunk/; revision=1076

1 files changed, 2 insertions, 1 deletions

diff --git a/packet.h b/packet.h
index 875bc1f53d..dcb9ed477b 100644
--- a/packet.h
+++ b/packet.h
@@ -1,7 +1,7 @@
 /* packet.h
  * Definitions for packet disassembly structures and routines
  *
- * $Id: packet.h,v 1.146 1999/11/19 09:55:38 guy Exp $
+ * $Id: packet.h,v 1.147 1999/11/20 05:35:14 gram Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@zing.org>
@@ -208,6 +208,7 @@ typedef struct tcp_extra_data {
 
 /* Utility routines used by packet*.c */
 gchar*     ether_to_str(const guint8 *);
+gchar*     ether_to_str_punct(const guint8 *, char);
 gchar*     ip_to_str(const guint8 *);
 struct e_in6_addr;
 gchar*     ip6_to_str(struct e_in6_addr *);