Wireshark  2.9.0-477-g68ec514b
The Wireshark network protocol analyzer
packet-gtp.h
1 /* packet-gtp.h
2  *
3  * Wireshark - Network traffic analyzer
4  * By Gerald Combs <gerald@wireshark.org>
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*/
13 typedef struct gtp_msg_hash_entry {
14  gboolean is_request; /*TRUE/FALSE*/
15  guint32 req_frame; /*frame with request */
16  nstime_t req_time; /*req time */
17  guint32 rep_frame; /*frame with reply */
18  gint seq_nr; /*sequence number*/
19  guint msgtype; /*messagetype*/
21 
22 
23 typedef struct _gtp_hdr {
24  guint8 flags; /* GTP header flags */
25  guint8 message; /* Message type */
26  guint16 length; /* Length of header */
27  gint64 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 /*
87  * 61-69 For future use. Shall not be sent. If received,
88  * shall be treated as an Unknown message.
89  */
90 #define GTP_MSG_RAN_INFO_RELAY 70
91 /*
92  * 71-95 For future use. Shall not be sent. If received,
93  * shall be treated as an Unknown message.
94  */
95 #define GTP_MBMS_NOTIFY_REQ 96
96 #define GTP_MBMS_NOTIFY_RES 97
97 #define GTP_MBMS_NOTIFY_REJ_REQ 98
98 #define GTP_MBMS_NOTIFY_REJ_RES 99
99 #define GTP_CREATE_MBMS_CNTXT_REQ 100
100 #define GTP_CREATE_MBMS_CNTXT_RES 101
101 #define GTP_UPD_MBMS_CNTXT_REQ 102
102 #define GTP_UPD_MBMS_CNTXT_RES 103
103 #define GTP_DEL_MBMS_CNTXT_REQ 104
104 #define GTP_DEL_MBMS_CNTXT_RES 105
105 /*
106  * 106 - 111 For future use. Shall not be sent. If received,
107  * shall be treated as an Unknown message.
108  */
109 #define GTP_MBMS_REG_REQ 112
110 #define GTP_MBMS_REG_RES 113
111 #define GTP_MBMS_DE_REG_REQ 114
112 #define GTP_MBMS_DE_REG_RES 115
113 #define GTP_MBMS_SES_START_REQ 116
114 #define GTP_MBMS_SES_START_RES 117
115 #define GTP_MBMS_SES_STOP_REQ 118
116 #define GTP_MBMS_SES_STOP_RES 119
117 #define GTP_MBMS_SES_UPD_REQ 120
118 #define GTP_MBMS_SES_UPD_RES 121
119 /* 122-127 For future use. Shall not be sent.
120  * If received, shall be treated as an Unknown message.
121  */
122 #define GTP_MS_INFO_CNG_NOT_REQ 128
123 #define GTP_MS_INFO_CNG_NOT_RES 129
124 /* 130-239 For future use. Shall not be sent.
125  * If received, shall be treated as an Unknown message.
126  */
127 #define GTP_MSG_DATA_TRANSF_REQ 0xF0
128 #define GTP_MSG_DATA_TRANSF_RESP 0xF1
129 /* 242-253 For future use. Shall not be sent.
130  * If received, shall be treated as an Unknown message.
131  */
132 #define GTP_MSG_END_MARKER 0xFE /* 254 */
133 #define GTP_MSG_TPDU 0xFF
134 
135 extern value_string_ext cause_type_ext;
136 
137 /* Data structures to keep track of sessions */
138 extern guint32 gtp_session_count;
139 extern gboolean g_gtp_session;
140 
141 typedef struct session_args {
142  wmem_list_t *teid_list;
143  wmem_list_t *ip_list;
144  guint32 last_teid;
145  address last_ip;
146  guint8 last_cause;
148 
149 /* Relation between frame -> session */
150 extern GHashTable* session_table;
151 
152 /* Relation between <teid,ip> -> frame */
153 extern wmem_tree_t* frame_tree;
154 
155 guint32 get_frame(address ip, guint32 teid, guint32 *frame);
156 
157 void remove_frame_info(guint32 *f);
158 
159 void add_gtp_session(guint32 frame, guint32 session);
160 
161 gboolean teid_exists(guint32 teid, wmem_list_t *teid_list);
162 
163 gboolean ip_exists(address ip, wmem_list_t *ip_list);
164 
165 void fill_map(wmem_list_t *teid_list, wmem_list_t *ip_list, guint32 frame);
166 
167 gboolean is_cause_accepted(guint8 cause, guint32 version);
168 
169 int decode_qos_umts(tvbuff_t * tvb, int offset, packet_info * pinfo, proto_tree * tree, const gchar * qos_str, guint8 type);
170 
171 void dissect_gtp_uli(tvbuff_t * tvb, int offset, packet_info * pinfo, proto_tree * tree, session_args_t * args _U_);
172 
173 #endif /* __PACKET_GTP_H*/
Definition: wmem_tree-int.h:47
Definition: packet-gtp.h:23
Definition: packet-gtp.h:13
Definition: packet_info.h:44
Definition: packet-gtp.h:141
Definition: tvbuff-int.h:35
Definition: nstime.h:27
Definition: value_string.h:164
Definition: proto.h:759
Definition: wmem_list.c:23
Definition: address.h:47