xdlc.h File Reference

#include "ws_symbol_export.h"

Go to the source code of this file.

Classes
struct	xdlc_cf_items

Macros
#define	XDLC_I_MASK   0x01
#define	XDLC_I   0x00
#define	XDLC_S_U_MASK   0x03
#define	XDLC_S   0x01
#define	XDLC_U   0x03
#define	XDLC_N_R_MASK   0xE0
#define	XDLC_N_R_SHIFT   5
#define	XDLC_N_R_EXT_MASK   0xFE00
#define	XDLC_N_R_EXT_SHIFT   9
#define	XDLC_N_S_MASK   0x0E
#define	XDLC_N_S_SHIFT   1
#define	XDLC_N_S_EXT_MASK   0x00FE
#define	XDLC_N_S_EXT_SHIFT   1
#define	XDLC_P_F   0x10
#define	XDLC_P_F_EXT   0x0100
#define	XDLC_S_FTYPE_MASK   0x0C
#define	XDLC_RR   0x00
#define	XDLC_RNR   0x04
#define	XDLC_REJ   0x08
#define	XDLC_SREJ   0x0C
#define	XDLC_U_MODIFIER_MASK   0xEC
#define	XDLC_UI   0x00
#define	XDLC_UP   0x20
#define	XDLC_DISC   0x40
#define	XDLC_RD   0x40
#define	XDLC_UA   0x60
#define	XDLC_SNRM   0x80
#define	XDLC_TEST   0xE0
#define	XDLC_SIM   0x04
#define	XDLC_RIM   0x04
#define	XDLC_FRMR   0x84
#define	XDLC_CFGR   0xC4
#define	XDLC_SARM   0x0C
#define	XDLC_DM   0x0C
#define	XDLC_SABM   0x2C
#define	XDLC_SARME   0x4C
#define	XDLC_SABME   0x6C
#define	XDLC_RESET   0x8C
#define	XDLC_XID   0xAC
#define	XDLC_SNRME   0xCC
#define	XDLC_BCN   0xEC
#define	XDLC_IS_INFORMATION(control)    (((control) & XDLC_I_MASK) == XDLC_I || (control) == (XDLC_UI|XDLC_U))
#define	XDLC_CONTROL_LEN(control, is_extended)    ((((control) & XDLC_S_U_MASK) == XDLC_U || !(is_extended)) ? 1 : 2)

Functions
int	get_xdlc_control (const uint8_t *pd, int offset, bool is_extended)
WS_DLL_PUBLIC int	dissect_xdlc_control (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *xdlc_tree, int hf_xdlc_control, int ett_xdlc_control, const xdlc_cf_items *cf_items_nonext, const xdlc_cf_items *cf_items_ext, const value_string *u_modifier_short_vals_cmd, const value_string *u_modifier_short_vals_resp, bool is_response, bool is_extended, bool append_info)

Variables
const value_string	ftype_vals []
const value_string	stype_vals []
const value_string	modifier_vals_cmd []
const value_string	modifier_vals_resp []

Detailed Description

Define *DLC frame types, and routine to dissect the control field of a *DLC frame.

Macro Definition Documentation

XDLC_BCN

#define XDLC_BCN   0xEC

Beacon

XDLC_CFGR

#define XDLC_CFGR   0xC4

Configure

XDLC_CONTROL_LEN

#define XDLC_CONTROL_LEN	(		control,
			is_extended
	)		((((control) & XDLC_S_U_MASK) == XDLC_U || !(is_extended)) ? 1 : 2)

This macro takes the control field of an xDLC frame, and a flag saying whether we're doing basic or extended operation, and evaluates to the length of that field (if it's an Unnumbered frame, or we're not in extended mode, it's 1 byte long, otherwise it's 2 bytes long).

XDLC_DISC

#define XDLC_DISC   0x40

Disconnect (command)

XDLC_DM

#define XDLC_DM   0x0C

Disconnected mode (response)

XDLC_FRMR

#define XDLC_FRMR   0x84

Frame reject

XDLC_I

#define XDLC_I   0x00

Information frames

XDLC_I_MASK

#define XDLC_I_MASK   0x01

Mask to test for I or not I

XDLC_IS_INFORMATION

#define XDLC_IS_INFORMATION

(

control

)

(((control) & XDLC_I_MASK) == XDLC_I || (control) == (XDLC_UI|XDLC_U))

This macro takes the control field of an xDLC frame, as returned by "get_xdlc_control()" or "dissect_xdlc_control()", and evaluates to true if the frame is an "information" frame and false if it isn't. Note that frames other than information frames can have data in them, e.g. TEST frames.

XDLC_N_R_EXT_MASK

#define XDLC_N_R_EXT_MASK   0xFE00

extended

XDLC_N_R_MASK

#define XDLC_N_R_MASK   0xE0

basic

XDLC_N_S_EXT_MASK

#define XDLC_N_S_EXT_MASK   0x00FE

extended

XDLC_N_S_MASK

#define XDLC_N_S_MASK   0x0E

basic

XDLC_P_F

#define XDLC_P_F   0x10

basic

XDLC_P_F_EXT

#define XDLC_P_F_EXT   0x0100

extended

XDLC_RD

#define XDLC_RD   0x40

Request Disconnect (response)

XDLC_REJ

#define XDLC_REJ   0x08

Reject

XDLC_RESET

#define XDLC_RESET   0x8C

Reset

XDLC_RIM

#define XDLC_RIM   0x04

Request Initialization Mode (response)

XDLC_RNR

#define XDLC_RNR   0x04

Receiver not ready

XDLC_RR

#define XDLC_RR   0x00

Receiver ready

XDLC_S

#define XDLC_S   0x01

Supervisory frames

XDLC_S_U_MASK

#define XDLC_S_U_MASK   0x03

Mask to test for S or U

XDLC_SABM

#define XDLC_SABM   0x2C

Set Asynchronous Balanced Mode

XDLC_SABME

#define XDLC_SABME   0x6C

Set Asynchronous Balanced Mode Extended

XDLC_SARM

#define XDLC_SARM   0x0C

Set Asynchronous Response Mode (command)

XDLC_SARME

#define XDLC_SARME   0x4C

Set Asynchronous Response Mode Extended

XDLC_SIM

#define XDLC_SIM   0x04

Set Initialization Mode (command)

XDLC_SNRM

#define XDLC_SNRM   0x80

Set Normal Response Mode

XDLC_SNRME

#define XDLC_SNRME   0xCC

Set Normal Response Mode Extended

XDLC_SREJ

#define XDLC_SREJ   0x0C

Selective reject

XDLC_TEST

#define XDLC_TEST   0xE0

Test

XDLC_U

#define XDLC_U   0x03

Unnumbered frames

XDLC_UA

#define XDLC_UA   0x60

Unnumbered Acknowledge

XDLC_UI

#define XDLC_UI   0x00

Unnumbered Information

XDLC_UP

#define XDLC_UP   0x20

Unnumbered Poll

XDLC_XID

#define XDLC_XID   0xAC

Exchange identification