epan/dissectors/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     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*/
  20 } gtp_msg_hash_t;
  21
  22
  23 typedef 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
 137 extern value_string_ext cause_type_ext;
 138
 139 /** GTP header extension info
 140 * This structure is used to transfer infotmation to users of the "gtp.hdr_ext" dissector table
 141 */
 142
 143 typedef 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                                */
 147 } gtp_hdr_ext_info_t;
 148
 149
 150
 151 /* Data structures to keep track of sessions */
 152 extern uint32_t gtp_session_count;
 153 extern bool g_gtp_session;
 154
 155 typedef 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;
 161 } session_args_t;
 162
 163 /* Relation between frame -> session */
 164 extern wmem_map_t* session_table;
 165
 166 /* Relation between <teid,ip> -> frame */
 167 extern wmem_map_t* frame_map;
 168
 169 uint32_t get_frame(address ip, uint32_t teid, uint32_t *frame);
 170
 171 void remove_frame_info(uint32_t f);
 172
 173 void add_gtp_session(uint32_t frame, uint32_t session);
 174
 175 bool teid_exists(uint32_t teid, wmem_list_t *teid_list);
 176
 177 bool ip_exists(address ip, wmem_list_t *ip_list);
 178
 179 void fill_map(wmem_list_t *teid_list, wmem_list_t *ip_list, uint32_t frame);
 180
 181 bool is_cause_accepted(uint8_t cause, uint32_t version);
 182
 183 int decode_qos_umts(tvbuff_t * tvb, int offset, packet_info * pinfo, proto_tree * tree, const char * qos_str, uint8_t type);
 184
 185 void 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*/