packet-gmr1_common.h

/* packet-gmr1_common.h
 *
 * Headers for GMR-1 dissection in wireshark (common stuff).
 * Copyright (c) 2011 Sylvain Munaut <[email protected]>
 *
 * References:
 *  [1] ETSI TS 101 376-4-8 V1.3.1 - GMR-1 04.008
 *  [2] ETSI TS 101 376-4-8 V2.2.1 - GMPRS-1 04.008
 *  [3] ETSI TS 101 376-4-8 V3.1.1 - GMR-1 3G 44.008
 *  [4] ETSI TS 100 940 V7.21.0 - GSM 04.08
 *  [5] ETSI TS 101 376-4-12 V3.2.1 - GMR-1 3G 44.060
 *  [6] ETSI TS 101 376-5-6 V1.3.1 - GMR-1 05.008
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <[email protected]>
 * Copyright 1998 Gerald Combs
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */
 
#ifndef __PACKET_GMR1_COMMON_H__
#define __PACKET_GMR1_COMMON_H__
 
#include "packet-gsm_a_common.h"
 
 
/* Protocol descriptor (see [1] 11.2 & [4] 10.2) */
typedef enum {
    GMR1_PD_CC  = 0x03,
    GMR1_PD_MM  = 0x05,
    GMR1_PD_RR  = 0x06,
    GMR1_PD_GMM = 0x08,
    GMR1_PD_SM  = 0x0a,
    GMR1_PD_DTRS    = 0x1e
} gmr1_pd_e;
 
#define GMR1_PD_EXT_MSK 0x0f
#define GMR1_PD_EXT_VAL 0x0e
 
extern const value_string gmr1_pd_vals[];
extern const value_string gmr1_pd_short_vals[];
 
 
/* Common IEs */
enum gmr1_ie_common_idx {
    GMR1_IE_COM_CM2,            /* [1] 11.5.1.6 */
    GMR1_IE_COM_SPARE_NIBBLE,       /* [1] 11.5.1.8 */
    NUM_GMR1_IE_COMMON /* Terminator */
};
 
extern int hf_gmr1_skip_ind;
extern int hf_gmr1_l3_pd;
extern int hf_gmr1_elem_id;
extern int hf_gmr1_len;
 
 
/* Message & IEs parsing */
 
typedef void (*gmr1_msg_func_t)(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, int offset, int len);
 
#define GMR1_IE_FUNC(fn_name)   \
    static uint16_t \
    fn_name (tvbuff_t *tvb _U_, proto_tree *tree _U_, packet_info *pinfo _U_, uint32_t offset _U_, unsigned len _U_, char *add_string _U_, int string_len _U_)
 
#define GMR1_MSG_FUNC(fn_name)  \
    static void \
    fn_name (tvbuff_t *tvb _U_, proto_tree *tree _U_, packet_info *pinfo _U_, int offset, int len)
 
#define GMR1_MSG_FUNC_BEGIN \
    int curr_offset;    \
    int curr_len;       \
    int consumed;       \
                \
    curr_offset = offset;   \
    curr_len = len;     \
    consumed = 0;
 
#define GMR1_MSG_FUNC_END
 
 
extern void
gmr1_get_msg_params(gmr1_pd_e pd, uint8_t oct, const char **msg_str,
                    int *ett_tree, int *hf_idx, gmr1_msg_func_t *msg_func_p);
 
 
#endif /* __PACKET_GMR1_COMMON_H__ */