The only LLC frame types that should be dissected based on their SAP or,

if the SAPs are SNAP, based on their ethertype are I frames and UI
frames; others don't have payload to be dissected as belonging to other
protocols.

svn path=/trunk/; revision=555

1 files changed, 29 insertions, 1 deletions

diff --git a/xdlc.h b/xdlc.h
index cbc699a37b..3f2bc0e8bf 100644
--- a/xdlc.h
+++ b/xdlc.h
@@ -2,7 +2,7 @@
  * Define *DLC frame types, and routine to dissect the control field of
  * a *DLC frame.
  *
- * $Id: xdlc.h,v 1.1 1999/08/04 04:37:46 guy Exp $
+ * $Id: xdlc.h,v 1.2 1999/08/23 22:47:13 guy Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@unicom.net>
@@ -32,5 +32,33 @@
 #define XDLC_S		0x01	/* Supervisory frames */
 #define XDLC_U		0x03	/* Unnumbered frames */
 
+/*
+ * U-format modifiers.
+ */
+#define XDLC_U_MODIFIER_MASK	0xEC
+#define XDLC_UI		0x00	/* Unnumbered Information */
+#define XDLC_UP		0x20	/* Unnumbered Poll */
+#define XDLC_DISC	0x40	/* Disconnect (command) */
+#define XDLC_RD		0x40	/* Request Disconnect (response) */
+#define XDLC_UA		0x60	/* Unnumbered Acknowledge */
+#define XDLC_SNRM	0x80	/* Set Normal Response Mode */
+#define XDLC_TEST	0xC0	/* Test */
+#define XDLC_SIM	0x04	/* Set Initialization Mode (command) */
+#define XDLC_RIM	0x04	/* Request Initialization Mode (response) */
+#define XDLC_FRMR	0x84	/* Frame reject */
+#define XDLC_CFGR	0xC4	/* Configure */
+#define XDLC_SARM	0x0C	/* Set Asynchronous Response Mode (command) */
+#define XDLC_DM		0x0C	/* Disconnected mode (response) */
+#define XDLC_SABM	0x2C	/* Set Asynchronous Balanced Mode */
+#define XDLC_SARME	0x4C	/* Set Asynchronous Response Mode Extended */
+#define XDLC_SABME	0x6C	/* Set Asynchronous Balanced Mode Extended */
+#define XDLC_RESET	0x8C	/* Reset */
+#define XDLC_XID	0xAC	/* Exchange identification */
+#define XDLC_SNRME	0xCC	/* Set Normal Response Mode Extended */
+#define XDLC_BCN	0xEC	/* Beacon */
+
+int get_xdlc_control(const u_char *pd, int offset, int is_response,
+  int extended);
+
 int dissect_xdlc_control(const u_char *pd, int offset, frame_data *fd,
   proto_tree *xdlc_tree, int hf_xdlc_control, int is_response, int extended);