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packet-gtp.h
1/* packet-gtp.h
2 *
3 * Wireshark - Network traffic analyzer
4 * By Gerald Combs <[email protected]>
5 * Copyright 1998 Gerald Combs
6 *
7 * SPDX-License-Identifier: GPL-2.0-or-later
8 */
9
10#ifndef __PACKET_GTP_H
11#define __PACKET_GTP_H
12/*structure used to track responses to requests using sequence number*/
13typedef struct gtp_msg_hash_entry {
14 bool is_request; /*true/false*/
15 uint32_t req_frame; /*frame with request */
16 nstime_t req_time; /*req time */
17 uint32_t rep_frame; /*frame with reply */
18 int seq_nr; /*sequence number*/
19 unsigned msgtype; /*messagetype*/
21
22
23typedef struct _gtp_hdr {
24 uint8_t flags; /* GTP header flags */
25 uint8_t message; /* Message type */
26 uint32_t length; /* Length of header */
27 int64_t teid; /* Tunnel End-point ID */
28} gtp_hdr_t;
29
30/* definitions of GTP messages */
31#define GTP_MSG_UNKNOWN 0x00
32#define GTP_MSG_ECHO_REQ 0x01
33#define GTP_MSG_ECHO_RESP 0x02
34#define GTP_MSG_VER_NOT_SUPP 0x03
35#define GTP_MSG_NODE_ALIVE_REQ 0x04
36#define GTP_MSG_NODE_ALIVE_RESP 0x05
37#define GTP_MSG_REDIR_REQ 0x06
38#define GTP_MSG_REDIR_RESP 0x07
39/*
40 * 8-15 For future use. Shall not be sent. If received,
41 * shall be treated as an Unknown message.
42 */
43#define GTP_MSG_CREATE_PDP_REQ 0x10
44#define GTP_MSG_CREATE_PDP_RESP 0x11
45#define GTP_MSG_UPDATE_PDP_REQ 0x12
46#define GTP_MSG_UPDATE_PDP_RESP 0x13
47#define GTP_MSG_DELETE_PDP_REQ 0x14
48#define GTP_MSG_DELETE_PDP_RESP 0x15
49#define GTP_MSG_INIT_PDP_CONTEXT_ACT_REQ 0x16 /* 2G */
50#define GTP_MSG_INIT_PDP_CONTEXT_ACT_RESP 0x17 /* 2G */
51/*
52 * 24-25 For future use. Shall not be sent. If received,
53 * shall be treated as an Unknown message.
54 */
55#define GTP_MSG_DELETE_AA_PDP_REQ 0x18 /* 2G */
56#define GTP_MSG_DELETE_AA_PDP_RESP 0x19 /* 2G */
57#define GTP_MSG_ERR_IND 0x1A
58#define GTP_MSG_PDU_NOTIFY_REQ 0x1B
59#define GTP_MSG_PDU_NOTIFY_RESP 0x1C
60#define GTP_MSG_PDU_NOTIFY_REJ_REQ 0x1D
61#define GTP_MSG_PDU_NOTIFY_REJ_RESP 0x1E
62#define GTP_MSG_SUPP_EXT_HDR 0x1F
63#define GTP_MSG_SEND_ROUT_INFO_REQ 0x20
64#define GTP_MSG_SEND_ROUT_INFO_RESP 0x21
65#define GTP_MSG_FAIL_REP_REQ 0x22
66#define GTP_MSG_FAIL_REP_RESP 0x23
67#define GTP_MSG_MS_PRESENT_REQ 0x24
68#define GTP_MSG_MS_PRESENT_RESP 0x25
69/*
70 * 38-47 For future use. Shall not be sent. If received,
71 * shall be treated as an Unknown message.
72 */
73#define GTP_MSG_IDENT_REQ 0x30
74#define GTP_MSG_IDENT_RESP 0x31
75#define GTP_MSG_SGSN_CNTXT_REQ 0x32
76#define GTP_MSG_SGSN_CNTXT_RESP 0x33
77#define GTP_MSG_SGSN_CNTXT_ACK 0x34
78#define GTP_MSG_FORW_RELOC_REQ 0x35
79#define GTP_MSG_FORW_RELOC_RESP 0x36
80#define GTP_MSG_FORW_RELOC_COMP 0x37
81#define GTP_MSG_RELOC_CANCEL_REQ 0x38
82#define GTP_MSG_RELOC_CANCEL_RESP 0x39
83#define GTP_MSG_FORW_SRNS_CNTXT 0x3A
84#define GTP_MSG_FORW_RELOC_ACK 0x3B
85#define GTP_MSG_FORW_SRNS_CNTXT_ACK 0x3C
86#define GTP_MSG_UE_REG_QUERY_REQ 0x3D
87#define GTP_MSG_UE_REG_QUERY_RESP 0x3E
88/*
89 * 63-69 For future use. Shall not be sent. If received,
90 * shall be treated as an Unknown message.
91 */
92#define GTP_MSG_RAN_INFO_RELAY 70
93/*
94 * 71-95 For future use. Shall not be sent. If received,
95 * shall be treated as an Unknown message.
96 */
97#define GTP_MBMS_NOTIFY_REQ 96
98#define GTP_MBMS_NOTIFY_RES 97
99#define GTP_MBMS_NOTIFY_REJ_REQ 98
100#define GTP_MBMS_NOTIFY_REJ_RES 99
101#define GTP_CREATE_MBMS_CNTXT_REQ 100
102#define GTP_CREATE_MBMS_CNTXT_RES 101
103#define GTP_UPD_MBMS_CNTXT_REQ 102
104#define GTP_UPD_MBMS_CNTXT_RES 103
105#define GTP_DEL_MBMS_CNTXT_REQ 104
106#define GTP_DEL_MBMS_CNTXT_RES 105
107/*
108 * 106 - 111 For future use. Shall not be sent. If received,
109 * shall be treated as an Unknown message.
110 */
111#define GTP_MBMS_REG_REQ 112
112#define GTP_MBMS_REG_RES 113
113#define GTP_MBMS_DE_REG_REQ 114
114#define GTP_MBMS_DE_REG_RES 115
115#define GTP_MBMS_SES_START_REQ 116
116#define GTP_MBMS_SES_START_RES 117
117#define GTP_MBMS_SES_STOP_REQ 118
118#define GTP_MBMS_SES_STOP_RES 119
119#define GTP_MBMS_SES_UPD_REQ 120
120#define GTP_MBMS_SES_UPD_RES 121
121/* 122-127 For future use. Shall not be sent.
122 * If received, shall be treated as an Unknown message.
123 */
124#define GTP_MS_INFO_CNG_NOT_REQ 128
125#define GTP_MS_INFO_CNG_NOT_RES 129
126/* 130-239 For future use. Shall not be sent.
127 * If received, shall be treated as an Unknown message.
128 */
129#define GTP_MSG_DATA_TRANSF_REQ 0xF0
130#define GTP_MSG_DATA_TRANSF_RESP 0xF1
131/* 242-253 For future use. Shall not be sent.
132 * If received, shall be treated as an Unknown message.
133 */
134#define GTP_MSG_END_MARKER 0xFE /* 254 */
135#define GTP_MSG_TPDU 0xFF
136
137extern value_string_ext cause_type_ext;
138
143typedef struct gtp_hdr_ext_info {
144 proto_item* hdr_ext_item; /* The item created when adding the type of header to the tree,
145 * used to put the name in the tree
146 */
148
149
150
151/* Data structures to keep track of sessions */
152extern uint32_t gtp_session_count;
153extern bool g_gtp_session;
154
155typedef struct session_args {
156 wmem_list_t *teid_list;
157 wmem_list_t *ip_list;
158 uint32_t last_teid;
159 address last_ip;
160 uint8_t last_cause;
162
163/* Relation between frame -> session */
164extern wmem_map_t* session_table;
165
166/* Relation between <teid,ip> -> frame */
167extern wmem_map_t* frame_map;
168
169uint32_t get_frame(address ip, uint32_t teid, uint32_t *frame);
170
171void remove_frame_info(uint32_t f);
172
173void add_gtp_session(uint32_t frame, uint32_t session);
174
175bool teid_exists(uint32_t teid, wmem_list_t *teid_list);
176
177bool ip_exists(address ip, wmem_list_t *ip_list);
178
179void fill_map(wmem_list_t *teid_list, wmem_list_t *ip_list, uint32_t frame);
180
181bool is_cause_accepted(uint8_t cause, uint32_t version);
182
183int decode_qos_umts(tvbuff_t * tvb, int offset, packet_info * pinfo, proto_tree * tree, const char * qos_str, uint8_t type);
184
185void dissect_gtp_uli(tvbuff_t * tvb, int offset, packet_info * pinfo, proto_tree * tree, session_args_t * args _U_);
186
187#endif /* __PACKET_GTP_H*/
Definition address.h:56
Definition packet-gtp.h:23
Definition packet_info.h:43
Definition proto.h:903
Definition value_string.h:169
Definition wmem_list.c:23
Definition wmem_map.c:44
Definition packet-gtp.h:143
Definition packet-gtp.h:13
Definition nstime.h:26
Definition packet-gtp.h:155
Definition tvbuff-int.h:35