186 lines
6.4 KiB
C
186 lines
6.4 KiB
C
/* packet-gtp.h
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __PACKET_GTP_H
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#define __PACKET_GTP_H
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/*structure used to track responses to requests using sequence number*/
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typedef struct gtp_msg_hash_entry {
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gboolean is_request; /*TRUE/FALSE*/
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guint32 req_frame; /*frame with request */
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nstime_t req_time; /*req time */
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guint32 rep_frame; /*frame with reply */
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gint seq_nr; /*sequence number*/
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guint msgtype; /*messagetype*/
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} gtp_msg_hash_t;
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typedef struct _gtp_hdr {
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guint8 flags; /* GTP header flags */
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guint8 message; /* Message type */
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guint16 length; /* Length of header */
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gint64 teid; /* Tunnel End-point ID */
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} gtp_hdr_t;
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/* definitions of GTP messages */
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#define GTP_MSG_UNKNOWN 0x00
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#define GTP_MSG_ECHO_REQ 0x01
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#define GTP_MSG_ECHO_RESP 0x02
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#define GTP_MSG_VER_NOT_SUPP 0x03
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#define GTP_MSG_NODE_ALIVE_REQ 0x04
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#define GTP_MSG_NODE_ALIVE_RESP 0x05
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#define GTP_MSG_REDIR_REQ 0x06
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#define GTP_MSG_REDIR_RESP 0x07
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/*
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* 8-15 For future use. Shall not be sent. If received,
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* shall be treated as an Unknown message.
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*/
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#define GTP_MSG_CREATE_PDP_REQ 0x10
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#define GTP_MSG_CREATE_PDP_RESP 0x11
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#define GTP_MSG_UPDATE_PDP_REQ 0x12
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#define GTP_MSG_UPDATE_PDP_RESP 0x13
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#define GTP_MSG_DELETE_PDP_REQ 0x14
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#define GTP_MSG_DELETE_PDP_RESP 0x15
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#define GTP_MSG_INIT_PDP_CONTEXT_ACT_REQ 0x16 /* 2G */
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#define GTP_MSG_INIT_PDP_CONTEXT_ACT_RESP 0x17 /* 2G */
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/*
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* 24-25 For future use. Shall not be sent. If received,
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* shall be treated as an Unknown message.
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*/
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#define GTP_MSG_DELETE_AA_PDP_REQ 0x18 /* 2G */
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#define GTP_MSG_DELETE_AA_PDP_RESP 0x19 /* 2G */
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#define GTP_MSG_ERR_IND 0x1A
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#define GTP_MSG_PDU_NOTIFY_REQ 0x1B
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#define GTP_MSG_PDU_NOTIFY_RESP 0x1C
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#define GTP_MSG_PDU_NOTIFY_REJ_REQ 0x1D
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#define GTP_MSG_PDU_NOTIFY_REJ_RESP 0x1E
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#define GTP_MSG_SUPP_EXT_HDR 0x1F
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#define GTP_MSG_SEND_ROUT_INFO_REQ 0x20
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#define GTP_MSG_SEND_ROUT_INFO_RESP 0x21
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#define GTP_MSG_FAIL_REP_REQ 0x22
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#define GTP_MSG_FAIL_REP_RESP 0x23
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#define GTP_MSG_MS_PRESENT_REQ 0x24
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#define GTP_MSG_MS_PRESENT_RESP 0x25
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/*
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* 38-47 For future use. Shall not be sent. If received,
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* shall be treated as an Unknown message.
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*/
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#define GTP_MSG_IDENT_REQ 0x30
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#define GTP_MSG_IDENT_RESP 0x31
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#define GTP_MSG_SGSN_CNTXT_REQ 0x32
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#define GTP_MSG_SGSN_CNTXT_RESP 0x33
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#define GTP_MSG_SGSN_CNTXT_ACK 0x34
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#define GTP_MSG_FORW_RELOC_REQ 0x35
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#define GTP_MSG_FORW_RELOC_RESP 0x36
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#define GTP_MSG_FORW_RELOC_COMP 0x37
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#define GTP_MSG_RELOC_CANCEL_REQ 0x38
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#define GTP_MSG_RELOC_CANCEL_RESP 0x39
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#define GTP_MSG_FORW_SRNS_CNTXT 0x3A
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#define GTP_MSG_FORW_RELOC_ACK 0x3B
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#define GTP_MSG_FORW_SRNS_CNTXT_ACK 0x3C
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/*
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* 61-69 For future use. Shall not be sent. If received,
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* shall be treated as an Unknown message.
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*/
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#define GTP_MSG_RAN_INFO_RELAY 70
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/*
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* 71-95 For future use. Shall not be sent. If received,
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* shall be treated as an Unknown message.
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*/
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#define GTP_MBMS_NOTIFY_REQ 96
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#define GTP_MBMS_NOTIFY_RES 97
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#define GTP_MBMS_NOTIFY_REJ_REQ 98
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#define GTP_MBMS_NOTIFY_REJ_RES 99
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#define GTP_CREATE_MBMS_CNTXT_REQ 100
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#define GTP_CREATE_MBMS_CNTXT_RES 101
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#define GTP_UPD_MBMS_CNTXT_REQ 102
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#define GTP_UPD_MBMS_CNTXT_RES 103
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#define GTP_DEL_MBMS_CNTXT_REQ 104
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#define GTP_DEL_MBMS_CNTXT_RES 105
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/*
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* 106 - 111 For future use. Shall not be sent. If received,
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* shall be treated as an Unknown message.
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*/
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#define GTP_MBMS_REG_REQ 112
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#define GTP_MBMS_REG_RES 113
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#define GTP_MBMS_DE_REG_REQ 114
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#define GTP_MBMS_DE_REG_RES 115
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#define GTP_MBMS_SES_START_REQ 116
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#define GTP_MBMS_SES_START_RES 117
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#define GTP_MBMS_SES_STOP_REQ 118
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#define GTP_MBMS_SES_STOP_RES 119
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#define GTP_MBMS_SES_UPD_REQ 120
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#define GTP_MBMS_SES_UPD_RES 121
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/* 122-127 For future use. Shall not be sent.
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* If received, shall be treated as an Unknown message.
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*/
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#define GTP_MS_INFO_CNG_NOT_REQ 128
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#define GTP_MS_INFO_CNG_NOT_RES 129
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/* 130-239 For future use. Shall not be sent.
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* If received, shall be treated as an Unknown message.
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*/
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#define GTP_MSG_DATA_TRANSF_REQ 0xF0
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#define GTP_MSG_DATA_TRANSF_RESP 0xF1
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/* 242-253 For future use. Shall not be sent.
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* If received, shall be treated as an Unknown message.
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*/
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#define GTP_MSG_END_MARKER 0xFE /* 254 */
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#define GTP_MSG_TPDU 0xFF
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extern value_string_ext cause_type_ext;
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/* Data structures to keep track of sessions */
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extern guint32 gtp_session_count;
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extern gboolean g_gtp_session;
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typedef struct session_args {
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wmem_list_t *teid_list;
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wmem_list_t *ip_list;
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guint32 last_teid;
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address last_ip;
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guint8 last_cause;
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} session_args_t;
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/* Relation between frame -> session */
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extern GHashTable* session_table;
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/* Relation between <teid,ip> -> frame */
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extern wmem_tree_t* frame_tree;
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guint32 get_frame(address ip, guint32 teid, guint32 *frame);
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void remove_frame_info(guint32 *f);
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void add_gtp_session(guint32 frame, guint32 session);
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gboolean teid_exists(guint32 teid, wmem_list_t *teid_list);
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gboolean ip_exists(address ip, wmem_list_t *ip_list);
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void fill_map(wmem_list_t *teid_list, wmem_list_t *ip_list, guint32 frame);
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gboolean is_cause_accepted(guint8 cause, guint32 version);
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int decode_qos_umts(tvbuff_t * tvb, int offset, packet_info * pinfo, proto_tree * tree, const gchar * qos_str, guint8 type);
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void dissect_gtp_uli(tvbuff_t * tvb, int offset, packet_info * pinfo, proto_tree * tree, session_args_t * args _U_);
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#endif /* __PACKET_GTP_H*/
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