diff options
Diffstat (limited to 'epan/dissectors/packet-gtp.c')
-rw-r--r-- | epan/dissectors/packet-gtp.c | 4600 |
1 files changed, 4600 insertions, 0 deletions
diff --git a/epan/dissectors/packet-gtp.c b/epan/dissectors/packet-gtp.c new file mode 100644 index 0000000000..58fa038fd7 --- /dev/null +++ b/epan/dissectors/packet-gtp.c @@ -0,0 +1,4600 @@ +/* packet-gtp.c + * + * Routines for GTP dissection + * Copyright 2001, Michal Melerowicz <michal.melerowicz@nokia.com> + * Nicolas Balkota <balkota@mac.com> + * + * $Id$ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@ethereal.com> + * Copyright 1998 Gerald Combs + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <glib.h> + +#include <epan/packet.h> +#include "prefs.h" +#include "packet-gtp.h" +#include "packet-ipv6.h" +#include "packet-ppp.h" + +static dissector_table_t ppp_subdissector_table; + +#define GTPv0_PORT 3386 +#define GTPv1C_PORT 2123 /* 3G Control PDU */ +#define GTPv1U_PORT 2152 /* 3G T-PDU */ + +#define GTPv0_HDR_LENGTH 20 +#define GTPv1_HDR_LENGTH 12 +#define GTP_PRIME_HDR_LENGTH 6 + +/* to check compliance with ETSI */ +#define GTP_MANDATORY 1 +#define GTP_OPTIONAL 2 +#define GTP_CONDITIONAL 4 + +static int g_gtpv0_port = GTPv0_PORT; +static int g_gtpv1c_port = GTPv1C_PORT; +static int g_gtpv1u_port = GTPv1U_PORT; + +void proto_reg_handoff_gtp(void); + +static int proto_gtp = -1; + +static int hf_gtp_apn = -1; +static int hf_gtp_cause = -1; +static int hf_gtp_chrg_char = -1; +static int hf_gtp_chrg_char_s = -1; +static int hf_gtp_chrg_char_n = -1; +static int hf_gtp_chrg_char_p = -1; +static int hf_gtp_chrg_char_f = -1; +static int hf_gtp_chrg_char_h = -1; +static int hf_gtp_chrg_char_r = -1; +static int hf_gtp_chrg_id = -1; +static int hf_gtp_chrg_ipv4 = -1; +static int hf_gtp_chrg_ipv6 = -1; +static int hf_gtp_ext_flow_label = -1; +static int hf_gtp_ext_id = -1; +static int hf_gtp_ext_val = -1; +static int hf_gtp_flags = -1; +static int hf_gtp_flags_ver = -1; +static int hf_gtp_flags_pt = -1; +static int hf_gtp_flags_spare1 = -1; +static int hf_gtp_flags_snn = -1; +static int hf_gtp_flags_spare2 = -1; +static int hf_gtp_flags_e = -1; +static int hf_gtp_flags_s = -1; +static int hf_gtp_flags_pn = -1; +static int hf_gtp_flow_ii = -1; +static int hf_gtp_flow_label = -1; +static int hf_gtp_flow_sig = -1; +static int hf_gtp_gsn_addr_len = -1; +static int hf_gtp_gsn_addr_type = -1; +static int hf_gtp_gsn_ipv4 = -1; +static int hf_gtp_gsn_ipv6 = -1; +static int hf_gtp_imsi = -1; +static int hf_gtp_length = -1; +static int hf_gtp_map_cause = -1; +static int hf_gtp_message_type = -1; +static int hf_gtp_ms_reason = -1; +static int hf_gtp_ms_valid = -1; +static int hf_gtp_msisdn = -1; +static int hf_gtp_next = -1; +static int hf_gtp_npdu_number = -1; +static int hf_gtp_node_ipv4 = -1; +static int hf_gtp_node_ipv6 = -1; +static int hf_gtp_nsapi = -1; +static int hf_gtp_ptmsi = -1; +static int hf_gtp_ptmsi_sig = -1; +static int hf_gtp_qos_spare1 = -1; +static int hf_gtp_qos_delay = -1; +static int hf_gtp_qos_mean = -1; +static int hf_gtp_qos_peak = -1; +static int hf_gtp_qos_spare2 = -1; +static int hf_gtp_qos_precedence = -1; +static int hf_gtp_qos_spare3 = -1; +static int hf_gtp_qos_reliability = -1; +static int hf_gtp_qos_al_ret_priority = -1; +static int hf_gtp_qos_traf_class = -1; +static int hf_gtp_qos_del_order = -1; +static int hf_gtp_qos_del_err_sdu = -1; +static int hf_gtp_qos_max_sdu_size = -1; +static int hf_gtp_qos_max_ul = -1; +static int hf_gtp_qos_max_dl = -1; +static int hf_gtp_qos_res_ber = -1; +static int hf_gtp_qos_sdu_err_ratio = -1; +static int hf_gtp_qos_trans_delay = -1; +static int hf_gtp_qos_traf_handl_prio = -1; +static int hf_gtp_qos_guar_ul = -1; +static int hf_gtp_qos_guar_dl = -1; +static int hf_gtp_pkt_flow_id = -1; +static int hf_gtp_rab_gtpu_dn = -1; +static int hf_gtp_rab_gtpu_up = -1; +static int hf_gtp_rab_pdu_dn = -1; +static int hf_gtp_rab_pdu_up = -1; +static int hf_gtp_rai_mcc = -1; +static int hf_gtp_rai_mnc = -1; +static int hf_gtp_rai_rac = -1; +static int hf_gtp_rai_lac = -1; +static int hf_gtp_ranap_cause = -1; +static int hf_gtp_recovery = -1; +static int hf_gtp_reorder = -1; +static int hf_gtp_rnc_ipv4 = -1; +static int hf_gtp_rnc_ipv6 = -1; +static int hf_gtp_rp = -1; +static int hf_gtp_rp_nsapi = -1; +static int hf_gtp_rp_sms = -1; +static int hf_gtp_rp_spare = -1; +static int hf_gtp_sel_mode = -1; +static int hf_gtp_seq_number = -1; +static int hf_gtp_sndcp_number = -1; +static int hf_gtp_tear_ind = -1; +static int hf_gtp_teid = -1; +static int hf_gtp_teid_cp = -1; +static int hf_gtp_teid_data = -1; +static int hf_gtp_teid_ii = -1; +static int hf_gtp_tft_code = -1; +static int hf_gtp_tft_spare = -1; +static int hf_gtp_tft_number = -1; +static int hf_gtp_tft_eval = -1; +static int hf_gtp_tid = -1; +static int hf_gtp_tlli = -1; +static int hf_gtp_tr_comm = -1; +static int hf_gtp_trace_ref = -1; +static int hf_gtp_trace_type = -1; +static int hf_gtp_unknown = -1; +static int hf_gtp_user_addr_pdp_org = -1; +static int hf_gtp_user_addr_pdp_type = -1; +static int hf_gtp_user_ipv4 = -1; +static int hf_gtp_user_ipv6 = -1; + +/* Initialize the subtree pointers */ +static gint ett_gtp = -1; +static gint ett_gtp_flags = -1; +static gint ett_gtp_ext = -1; +static gint ett_gtp_rai = -1; +static gint ett_gtp_qos = -1; +static gint ett_gtp_auth_tri = -1; +static gint ett_gtp_flow_ii = -1; +static gint ett_gtp_rab_cntxt = -1; +static gint ett_gtp_rp = -1; +static gint ett_gtp_pkt_flow_id = -1; +static gint ett_gtp_chrg_char = -1; +static gint ett_gtp_user = -1; +static gint ett_gtp_mm = -1; +static gint ett_gtp_trip = -1; +static gint ett_gtp_quint = -1; +static gint ett_gtp_pdp = -1; +static gint ett_gtp_apn = -1; +static gint ett_gtp_proto = -1; +static gint ett_gtp_gsn_addr = -1; +static gint ett_gtp_tft = -1; +static gint ett_gtp_tft_pf = -1; +static gint ett_gtp_tft_flags = -1; +static gint ett_gtp_rab_setup = -1; +static gint ett_gtp_hdr_list = -1; +static gint ett_gtp_chrg_addr = -1; +static gint ett_gtp_node_addr = -1; +static gint ett_gtp_rel_pack = -1; +static gint ett_gtp_can_pack = -1; +static gint ett_gtp_data_resp = -1; +static gint ett_gtp_priv_ext = -1; + +static gboolean gtp_tpdu = TRUE; +static gboolean gtp_etsi_order = FALSE; +static int gtpv0_port = 0; +static int gtpv1c_port = 0; +static int gtpv1u_port = 0; + +/* Definition of flags masks */ +#define GTP_VER_MASK 0xE0 + +static const value_string ver_types[] = { + { 0, "GTP release 97/98 version" }, + { 1, "GTP release 99 version" }, + { 2, "None" }, + { 3, "None" }, + { 4, "None" }, + { 5, "None" }, + { 6, "None" }, + { 7, "None" }, + { 0, NULL } +}; + +#define GTP_PT_MASK 0x10 +#define GTP_SPARE1_MASK 0x0E +#define GTP_SPARE2_MASK 0x08 +#define GTP_E_MASK 0x04 +#define GTP_S_MASK 0x02 +#define GTP_SNN_MASK 0x01 +#define GTP_PN_MASK 0x01 + +/* Definition of 3G charging characteristics masks */ +#define GTP_MASK_CHRG_CHAR_S 0xF000 +#define GTP_MASK_CHRG_CHAR_N 0x0800 +#define GTP_MASK_CHRG_CHAR_P 0x0400 +#define GTP_MASK_CHRG_CHAR_F 0x0200 +#define GTP_MASK_CHRG_CHAR_H 0x0100 +#define GTP_MASK_CHRG_CHAR_R 0x00FF + +/* Traffic Flow Templates mask */ +#define GTPv1_TFT_CODE_MASK 0xE0 +#define GTPv1_TFT_SPARE_MASK 0x10 +#define GTPv1_TFT_NUMBER_MASK 0x0F + +/* Definition of GSN Address masks */ +#define GTP_EXT_GSN_ADDR_TYPE_MASK 0xC0 +#define GTP_EXT_GSN_ADDR_LEN_MASK 0x3F + +/* Definition of QoS masks */ +#define GTP_EXT_QOS_SPARE1_MASK 0xC0 +#define GTP_EXT_QOS_DELAY_MASK 0x38 +#define GTP_EXT_QOS_RELIABILITY_MASK 0x07 +#define GTP_EXT_QOS_PEAK_MASK 0xF0 +#define GTP_EXT_QOS_SPARE2_MASK 0x08 +#define GTP_EXT_QOS_PRECEDENCE_MASK 0x07 +#define GTP_EXT_QOS_SPARE3_MASK 0xE0 +#define GTP_EXT_QOS_MEAN_MASK 0x1F +#define GTP_EXT_QOS_TRAF_CLASS_MASK 0xE0 +#define GTP_EXT_QOS_DEL_ORDER_MASK 0x18 +#define GTP_EXT_QOS_DEL_ERR_SDU_MASK 0x07 +#define GTP_EXT_QOS_RES_BER_MASK 0xF0 +#define GTP_EXT_QOS_SDU_ERR_RATIO_MASK 0x0F +#define GTP_EXT_QOS_TRANS_DELAY_MASK 0xFC +#define GTP_EXT_QOS_TRAF_HANDL_PRIORITY_MASK 0x03 + +/* Definition of Radio Priority's masks */ +#define GTPv1_EXT_RP_NSAPI_MASK 0xF0 +#define GTPv1_EXT_RP_SPARE_MASK 0x08 +#define GTPv1_EXT_RP_MASK 0x07 + +/* definitions of GTP messages */ +#define GTP_MSG_UNKNOWN 0x00 +#define GTP_MSG_ECHO_REQ 0x01 +#define GTP_MSG_ECHO_RESP 0x02 +#define GTP_MSG_VER_NOT_SUPP 0x03 +#define GTP_MSG_NODE_ALIVE_REQ 0x04 +#define GTP_MSG_NODE_ALIVE_RESP 0x05 +#define GTP_MSG_REDIR_REQ 0x06 +#define GTP_MSG_REDIR_RESP 0x07 +#define GTP_MSG_CREATE_PDP_REQ 0x10 +#define GTP_MSG_CREATE_PDP_RESP 0x11 +#define GTP_MSG_UPDATE_PDP_REQ 0x12 +#define GTP_MSG_UPDATE_PDP_RESP 0x13 +#define GTP_MSG_DELETE_PDP_REQ 0x14 +#define GTP_MSG_DELETE_PDP_RESP 0x15 +#define GTP_MSG_CREATE_AA_PDP_REQ 0x16 /* 2G */ +#define GTP_MSG_CREATE_AA_PDP_RESP 0x17 /* 2G */ +#define GTP_MSG_DELETE_AA_PDP_REQ 0x18 /* 2G */ +#define GTP_MSG_DELETE_AA_PDP_RESP 0x19 /* 2G */ +#define GTP_MSG_ERR_IND 0x1A +#define GTP_MSG_PDU_NOTIFY_REQ 0x1B +#define GTP_MSG_PDU_NOTIFY_RESP 0x1C +#define GTP_MSG_PDU_NOTIFY_REJ_REQ 0x1D +#define GTP_MSG_PDU_NOTIFY_REJ_RESP 0x1E +#define GTP_MSG_SUPP_EXT_HDR 0x1F +#define GTP_MSG_SEND_ROUT_INFO_REQ 0x20 +#define GTP_MSG_SEND_ROUT_INFO_RESP 0x21 +#define GTP_MSG_FAIL_REP_REQ 0x22 +#define GTP_MSG_FAIL_REP_RESP 0x23 +#define GTP_MSG_MS_PRESENT_REQ 0x24 +#define GTP_MSG_MS_PRESENT_RESP 0x25 +#define GTP_MSG_IDENT_REQ 0x30 +#define GTP_MSG_IDENT_RESP 0x31 +#define GTP_MSG_SGSN_CNTXT_REQ 0x32 +#define GTP_MSG_SGSN_CNTXT_RESP 0x33 +#define GTP_MSG_SGSN_CNTXT_ACK 0x34 +#define GTP_MSG_FORW_RELOC_REQ 0x35 +#define GTP_MSG_FORW_RELOC_RESP 0x36 +#define GTP_MSG_FORW_RELOC_COMP 0x37 +#define GTP_MSG_RELOC_CANCEL_REQ 0x38 +#define GTP_MSG_RELOC_CANCEL_RESP 0x39 +#define GTP_MSG_FORW_SRNS_CNTXT 0x3A +#define GTP_MSG_FORW_RELOC_ACK 0x3B +#define GTP_MSG_FORW_SRNS_CNTXT_ACK 0x3C +#define GTP_MSG_DATA_TRANSF_REQ 0xF0 +#define GTP_MSG_DATA_TRANSF_RESP 0xF1 +#define GTP_MSG_TPDU 0xFF + +static const value_string message_type[] = { + { GTP_MSG_UNKNOWN, "For future use" }, + { GTP_MSG_ECHO_REQ, "Echo request" }, + { GTP_MSG_ECHO_RESP, "Echo response" }, + { GTP_MSG_VER_NOT_SUPP, "Version not supported" }, + { GTP_MSG_NODE_ALIVE_REQ, "Node alive request" }, + { GTP_MSG_NODE_ALIVE_RESP, "Node alive response" }, + { GTP_MSG_REDIR_REQ, "Redirection request" }, + { GTP_MSG_REDIR_RESP, "Redirection response" }, + { GTP_MSG_CREATE_PDP_REQ, "Create PDP context request" }, + { GTP_MSG_CREATE_PDP_RESP, "Create PDP context response" }, + { GTP_MSG_UPDATE_PDP_REQ, "Update PDP context request" }, + { GTP_MSG_UPDATE_PDP_RESP, "Update PDP context response" }, + { GTP_MSG_DELETE_PDP_REQ, "Delete PDP context request" }, + { GTP_MSG_DELETE_PDP_RESP, "Delete PDP context response" }, + { GTP_MSG_CREATE_AA_PDP_REQ, "Create AA PDP Context Request" }, + { GTP_MSG_CREATE_AA_PDP_RESP, "Create AA PDP Context Response" }, + { GTP_MSG_DELETE_AA_PDP_REQ, "Delete AA PDP Context Request" }, + { GTP_MSG_DELETE_AA_PDP_RESP, "Delete AA PDP Context Response" }, + { GTP_MSG_ERR_IND, "Error indication" }, + { GTP_MSG_PDU_NOTIFY_REQ, "PDU notification request" }, + { GTP_MSG_PDU_NOTIFY_RESP, "PDU notification response" }, + { GTP_MSG_PDU_NOTIFY_REJ_REQ, "PDU notification reject request" }, + { GTP_MSG_PDU_NOTIFY_REJ_RESP, "PDU notification reject response" }, + { GTP_MSG_SUPP_EXT_HDR, "Supported extension header notification" }, + { GTP_MSG_SEND_ROUT_INFO_REQ, "Send routing information for GPRS request" }, + { GTP_MSG_SEND_ROUT_INFO_RESP, "Send routing information for GPRS response" }, + { GTP_MSG_FAIL_REP_REQ, "Failure report request" }, + { GTP_MSG_FAIL_REP_RESP, "Failure report response" }, + { GTP_MSG_MS_PRESENT_REQ, "Note MS GPRS present request" }, + { GTP_MSG_MS_PRESENT_RESP, "Note MS GPRS present response" }, + { GTP_MSG_IDENT_REQ, "Identification request" }, + { GTP_MSG_IDENT_RESP, "Identification response" }, + { GTP_MSG_SGSN_CNTXT_REQ, "SGSN context request" }, + { GTP_MSG_SGSN_CNTXT_RESP, "SGSN context response" }, + { GTP_MSG_SGSN_CNTXT_ACK, "SGSN context acknowledgement" }, + { GTP_MSG_FORW_RELOC_REQ, "Forward relocation request" }, + { GTP_MSG_FORW_RELOC_RESP, "Forward relocation response" }, + { GTP_MSG_FORW_RELOC_COMP, "Forward relocation complete" }, + { GTP_MSG_RELOC_CANCEL_REQ, "Relocation cancel request" }, + { GTP_MSG_RELOC_CANCEL_RESP, "Relocation cancel response" }, + { GTP_MSG_FORW_SRNS_CNTXT, "Forward SRNS context" }, + { GTP_MSG_FORW_RELOC_ACK, "Forward relocation complete acknowledge" }, + { GTP_MSG_FORW_SRNS_CNTXT_ACK, "Forward SRNS context acknowledge" }, + { GTP_MSG_DATA_TRANSF_REQ, "Data record transfer request" }, + { GTP_MSG_DATA_TRANSF_RESP, "Data record transfer response" }, + { GTP_MSG_TPDU, "T-PDU" }, + { 0, NULL } +}; + +/* definitions of fields in extension header */ +#define GTP_EXT_CAUSE 0x01 +#define GTP_EXT_IMSI 0x02 +#define GTP_EXT_RAI 0x03 +#define GTP_EXT_TLLI 0x04 +#define GTP_EXT_PTMSI 0x05 +#define GTP_EXT_QOS_GPRS 0x06 +#define GTP_EXT_REORDER 0x08 +#define GTP_EXT_AUTH_TRI 0x09 +#define GTP_EXT_MAP_CAUSE 0x0B +#define GTP_EXT_PTMSI_SIG 0x0C +#define GTP_EXT_MS_VALID 0x0D +#define GTP_EXT_RECOVER 0x0E +#define GTP_EXT_SEL_MODE 0x0F + +#define GTP_EXT_16 0x10 +#define GTP_EXT_FLOW_LABEL 0x10 +#define GTP_EXT_TEID 0x10 /* 0xFF10 3G */ + +#define GTP_EXT_17 0x11 +#define GTP_EXT_FLOW_SIG 0x11 +#define GTP_EXT_TEID_CP 0x11 /* 0xFF11 3G */ + +#define GTP_EXT_18 0x12 +#define GTP_EXT_FLOW_II 0x12 +#define GTP_EXT_TEID_II 0x12 /* 0xFF12 3G*/ + +#define GTP_EXT_19 0x13 +#define GTP_EXT_MS_REASON 0x13 /* same as 0x1D GTPv1_EXT_MS_REASON */ +#define GTP_EXT_TEAR_IND 0x13 /* 0xFF13 3G*/ + +#define GTP_EXT_NSAPI 0x14 /* 3G */ +#define GTP_EXT_RANAP_CAUSE 0x15 /* 3G */ +#define GTP_EXT_RAB_CNTXT 0x16 /* 3G */ +#define GTP_EXT_RP_SMS 0x17 /* 3G */ +#define GTP_EXT_RP 0x18 /* 3G */ +#define GTP_EXT_PKT_FLOW_ID 0x19 /* 3G */ +#define GTP_EXT_CHRG_CHAR 0x1A /* 3G */ +#define GTP_EXT_TRACE_REF 0x1B /* 3G */ +#define GTP_EXT_TRACE_TYPE 0x1C /* 3G */ +#define GTPv1_EXT_MS_REASON 0x1D /* 3G */ +#define GTP_EXT_TR_COMM 0x7E /* charging */ +#define GTP_EXT_CHRG_ID 0x7F +#define GTP_EXT_USER_ADDR 0x80 +#define GTP_EXT_MM_CNTXT 0x81 +#define GTP_EXT_PDP_CNTXT 0x82 +#define GTP_EXT_APN 0x83 +#define GTP_EXT_PROTO_CONF 0x84 +#define GTP_EXT_GSN_ADDR 0x85 +#define GTP_EXT_MSISDN 0x86 +#define GTP_EXT_QOS_UMTS 0x87 /* 3G */ +#define GTP_EXT_AUTH_QUI 0x88 /* 3G */ +#define GTP_EXT_TFT 0x89 /* 3G */ +#define GTP_EXT_TARGET_ID 0x8A /* 3G */ +#define GTP_EXT_UTRAN_CONT 0x8B /* 3G */ +#define GTP_EXT_RAB_SETUP 0x8C /* 3G */ +#define GTP_EXT_HDR_LIST 0x8D /* 3G */ +#define GTP_EXT_TRIGGER_ID 0x8E /* 3G */ +#define GTP_EXT_OMC_ID 0x8F /* 3G */ +#define GTP_EXT_C1 0xC1 +#define GTP_EXT_C2 0xC2 +#define GTP_EXT_REL_PACK 0xF9 /* charging */ +#define GTP_EXT_CAN_PACK 0xFA /* charging */ +#define GTP_EXT_CHRG_ADDR 0xFB +#define GTP_EXT_DATA_REQ 0xFC /* charging */ +#define GTP_EXT_DATA_RESP 0xFD /* charging */ +#define GTP_EXT_NODE_ADDR 0xFE /* charging */ +#define GTP_EXT_PRIV_EXT 0xFF + +static const value_string gtp_val[] = { + { GTP_EXT_CAUSE, "Cause of operation" }, + { GTP_EXT_IMSI, "IMSI" }, + { GTP_EXT_RAI, "Routing Area Identity" }, + { GTP_EXT_TLLI, "Temporary Logical Link Identity" }, + { GTP_EXT_PTMSI, "Packet TMSI" }, + { GTP_EXT_QOS_GPRS, "Quality of Service" }, + { GTP_EXT_REORDER, "Reorder required" }, + { GTP_EXT_AUTH_TRI, "Authentication triplets" }, + { GTP_EXT_MAP_CAUSE, "MAP cause" }, + { GTP_EXT_PTMSI_SIG, "P-TMSI signature" }, + { GTP_EXT_MS_VALID, "MS validated" }, + { GTP_EXT_RECOVER, "Recovery" }, + { GTP_EXT_SEL_MODE, "Selection mode" }, + + { GTP_EXT_16, "Flow label data I" }, + { GTP_EXT_FLOW_LABEL, "Flow label data I" }, + { GTP_EXT_TEID, "Tunnel Endpoint Identifier Data I" }, /* 3G */ + + { GTP_EXT_17, "Flow label signalling" }, + { GTP_EXT_FLOW_SIG, "Flow label signalling" }, + { GTP_EXT_TEID_CP, "Tunnel Endpoint Identifier Data Control Plane" }, /* 3G */ + + { GTP_EXT_18, "Flow label data II" }, + { GTP_EXT_FLOW_II, "Flow label data II" }, + { GTP_EXT_TEID_II, "Tunnel Endpoint Identifier Data II" }, /* 3G */ + + { GTP_EXT_19, "MS not reachable reason" }, + { GTP_EXT_MS_REASON, "MS not reachable reason" }, + { GTP_EXT_TEAR_IND, "Teardown ID" }, /* 3G */ + + { GTP_EXT_NSAPI, "NSAPI" }, /* 3G */ + { GTP_EXT_RANAP_CAUSE, "RANAP cause" }, /* 3G */ + { GTP_EXT_RAB_CNTXT, "RAB context" }, /* 3G */ + { GTP_EXT_RP_SMS, "Radio Priority for MO SMS" }, /* 3G */ + { GTP_EXT_RP, "Radio Priority" }, /* 3G */ + { GTP_EXT_PKT_FLOW_ID, "Packet Flow ID" }, /* 3G */ + { GTP_EXT_CHRG_CHAR, "Charging characteristics" }, /* 3G */ + { GTP_EXT_TRACE_REF, "Trace references" }, /* 3G */ + { GTP_EXT_TRACE_TYPE, "Trace type" }, /* 3G */ + { GTPv1_EXT_MS_REASON, "MS not reachable reason" }, /* 3G */ + { GTP_EXT_TR_COMM, "Packet transfer command" }, /* charging */ + { GTP_EXT_CHRG_ID, "Charging ID" }, + { GTP_EXT_USER_ADDR, "End user address" }, + { GTP_EXT_MM_CNTXT, "MM context" }, + { GTP_EXT_PDP_CNTXT, "PDP context" }, + { GTP_EXT_APN, "Access Point Name" }, + { GTP_EXT_PROTO_CONF, "Protocol configuration options" }, + { GTP_EXT_GSN_ADDR, "GSN address" }, + { GTP_EXT_MSISDN, "MS international PSTN/ISDN number" }, + { GTP_EXT_QOS_UMTS, "Quality of service (UMTS)" }, /* 3G */ + { GTP_EXT_AUTH_QUI, "Authentication quintuplets" }, /* 3G */ + { GTP_EXT_TFT, "Traffic Flow Template (TFT)" }, /* 3G */ + { GTP_EXT_TARGET_ID, "Target (RNC) identification" }, /* 3G */ + { GTP_EXT_UTRAN_CONT, "UTRAN transparent field" }, /* 3G */ + { GTP_EXT_RAB_SETUP, "RAB setup information" }, /* 3G */ + { GTP_EXT_HDR_LIST, "Extension Header Types List" }, /* 3G */ + { GTP_EXT_TRIGGER_ID, "Trigger Id" }, /* 3G */ + { GTP_EXT_OMC_ID, "OMC Identity" }, /* 3G */ + { GTP_EXT_REL_PACK, "Sequence numbers of released packets IE" }, /* charging */ + { GTP_EXT_CAN_PACK, "Sequence numbers of canceled packets IE" }, /* charging */ + { GTP_EXT_CHRG_ADDR, "Charging Gateway address" }, + { GTP_EXT_DATA_REQ, "Data record packet" }, /* charging */ + { GTP_EXT_DATA_RESP, "Requests responded" }, /* charging */ + { GTP_EXT_NODE_ADDR, "Address of recommended node" }, /* charging */ + { GTP_EXT_PRIV_EXT, "Private Extension" }, + { 0, NULL } +}; + +/* GPRS: 9.60 v7.6.0, page 37 + * UMTS: 29.060 v4.0, page 45 + */ +static const value_string cause_type[] = { + { 0, "Request IMSI" }, + { 1, "Request IMEI" }, + { 2, "Request IMSI and IMEI" }, + { 3, "No identity needed" }, + { 4, "MS refuses" }, + { 5, "MS is not GPRS responding" }, + { 59, "System failure" }, /* charging */ + { 60, "The transmit buffers are becoming full" }, /* charging */ + { 61, "The receive buffers are becoming full" }, /* charging */ + { 62, "Another node is about to go down" }, /* charging */ + { 63, "This node is about to go down" }, /* charging */ + { 128, "Request accepted" }, + { 192, "Non-existent" }, + { 193, "Invalid message format" }, + { 194, "IMSI not known" }, + { 195, "MS is GPRS detached" }, + { 196, "MS is not GPRS responding" }, + { 197, "MS refuses" }, + { 198, "Version not supported" }, + { 199, "No resource available" }, + { 200, "Service not supported" }, + { 201, "Mandatory IE incorrect" }, + { 202, "Mandatory IE missing" }, + { 203, "Optional IE incorrect" }, + { 204, "System failure" }, + { 205, "Roaming restriction" }, + { 206, "P-TMSI signature mismatch" }, + { 207, "GPRS connection suspended" }, + { 208, "Authentication failure" }, + { 209, "User authentication failed" }, + { 210, "Context not found" }, + { 211, "All PDP dynamic addresses are occupied" }, + { 212, "No memory is available" }, + { 213, "Relocation failure" }, + { 214, "Unknown mandatory extension header" }, + { 215, "Semantic error in the TFT operation" }, + { 216, "Syntactic error in the TFT operation" }, + { 217, "Semantic errors in packet filter(s)" }, + { 218, "Syntactic errors in packet filter(s)" }, + { 219, "Missing or unknown APN" }, + { 220, "Unknown PDP address or PDP type" }, + { 252, "Request related to possibly duplicated packets already fulfilled" }, /* charging */ + { 253, "Request already fulfilled" }, /* charging */ + { 254, "Sequence numbers of released/cancelled packets IE incorrect" }, /* charging */ + { 255, "Request not fulfilled" }, /* charging */ + { 0, NULL } +}; + +/* GPRS: 9.02 v7.7.0 + * UMTS: 29.002 v4.2.1, chapter 17.5, page 268 + * TODO: Check if all map_cause values are included + */ +static const value_string map_cause_type[] = { + { 1, "Unknown subscriber" }, + { 8, "Roaming not allowed" }, + { 10, "Bearer service not provisioned" }, + { 11, "Teleservice not provisioned" }, + { 13, "Call barred" }, + { 21, "Facility not supported" }, + { 23, "Update GPRS location" }, + { 24, "Send routing info for GPRS" }, + { 26, "Note MS present for GPRS" }, + { 27, "Absent subscriber" }, + { 34, "System failure" }, + { 35, "Data missing" }, + { 36, "Unexpected data value" }, + { 44, "Number chenged" }, + { 45, "Busy subscriber" }, + { 46, "No subscriber reply" }, + { 48, "Facility not allowed" }, + { 0, NULL } +}; + +static const value_string gsn_addr_type[] = { + { 0x00, "IPv4" }, + { 0x01, "IPv6" }, + { 0, NULL }, +}; + +static const value_string pdp_type[] = { + { 0x00, "X.25" }, + { 0x01, "PPP" }, + { 0x02, "OSP:IHOSS" }, + { 0x21, "IPv4" }, + { 0x57, "IPv6" }, + { 0, NULL } +}; + +static const value_string pdp_org_type[] = { + { 0, "ETSI" }, + { 1, "IETF" }, + { 0, NULL } +}; + +static const value_string qos_delay_type[] = { + { 0x00, "Subsribed delay class (in MS to network direction)" }, + { 0x01, "Delay class 1" }, + { 0x02, "Delay class 2" }, + { 0x03, "Delay class 3" }, + { 0x04, "Delay class 4 (best effort)" }, + { 0x07, "Reserved" }, + { 0, NULL } +}; + +static const value_string qos_reliability_type[] = { + { 0x00, "Subscribed reliability class (in MS to network direction)" }, + { 0x01, "Ack GTP/LLC/RLC, Protected data" }, + { 0x02, "Unack GTP, Ack LLC/RLC, Protected data" }, + { 0x03, "Unack GTP/LLC, Ack RLC, Protected data" }, + { 0x04, "Unack GTP/LLC/RLC, Protected data" }, + { 0x05, "Unack GTP/LLC/RLC, Unprotected data" }, + { 0x07, "Reserved" }, + { 0, NULL } +}; + +static const value_string qos_peak_type[] = { + { 0x00, "Subscribed peak throughput (in MS to network direction)" }, + { 0x01, "Up to 1 000 oct/s" }, + { 0x02, "Up to 2 000 oct/s" }, + { 0x03, "Up to 4 000 oct/s" }, + { 0x04, "Up to 8 000 oct/s" }, + { 0x05, "Up to 16 000 oct/s" }, + { 0x06, "Up to 32 000 oct/s" }, + { 0x07, "Up to 64 000 oct/s" }, + { 0x08, "Up to 128 000 oct/s" }, + { 0x09, "Up to 256 000 oct/s" }, +/* QoS Peak throughput classes from 0x0A to 0x0F (from 10 to 15) are subscribed */ + { 0x0A, "Reserved" }, + { 0x0B, "Reserved" }, + { 0x0C, "Reserved" }, + { 0x0D, "Reserved" }, + { 0x0E, "Reserved" }, + { 0x0F, "Reserved" }, + { 0, NULL } +}; + +static const value_string qos_precedence_type[] = { + { 0x00, "Subscribed precedence (in MS to network direction)" }, + { 0x01, "High priority" }, + { 0x02, "Normal priority" }, + { 0x03, "Low priority" }, + { 0x07, "Reserved" }, + { 0, NULL } +}; + +static const value_string qos_mean_type[] = { + { 0x00, "Subscribed mean throughput (in MS to network direction)" }, + { 0x01, "100 oct/h" }, /* Class 2 */ + { 0x02, "200 oct/h" }, /* Class 3 */ + { 0x03, "500 oct/h" }, /* Class 4 */ + { 0x04, "1 000 oct/h" }, /* Class 5 */ + { 0x05, "2 000 oct/h" }, /* Class 6 */ + { 0x06, "5 000 oct/h" }, /* Class 7 */ + { 0x07, "10 000 oct/h" }, /* Class 8 */ + { 0x08, "20 000 oct/h" }, /* Class 9 */ + { 0x09, "50 000 oct/h" }, /* Class 10 */ + { 0x0A, "100 000 oct/h" }, /* Class 11 */ + { 0x0B, "200 000 oct/h" }, /* Class 12 */ + { 0x0C, "500 000 oct/h" }, /* Class 13 */ + { 0x0D, "1 000 000 oct/h" }, /* Class 14 */ + { 0x0E, "2 000 000 oct/h" }, /* Class 15 */ + { 0x0F, "5 000 000 oct/h" }, /* Class 16 */ + { 0x10, "10 000 000 oct/h" }, /* Class 17 */ + { 0x11, "20 000 000 oct/h" }, /* Class 18 */ + { 0x12, "50 000 000 oct/h" }, /* Class 19 */ +/* QoS Mean throughput classes from 0x13 to 0x1E (from 19 to 30) are subscribed */ + { 0x13, "Reserved" }, + { 0x14, "Reserved" }, + { 0x15, "Reserved" }, + { 0x16, "Reserved" }, + { 0x17, "Reserved" }, + { 0x18, "Reserved" }, + { 0x19, "Reserved" }, + { 0x1A, "Reserved" }, + { 0x1B, "Reserved" }, + { 0x1C, "Reserved" }, + { 0x1D, "Reserved" }, + { 0x1E, "Reserved" }, + { 0x1F, "Best effort" }, /* Class 1 */ + { 0, NULL } +}; + +static const value_string qos_del_err_sdu[] = { + { 0x00, "Subscribed delivery of erroneous SDUs (in MS to network direction)" }, + { 0x01, "No detect ('-')" }, + { 0x02, "Erroneous SDUs are delivered ('yes')" }, + { 0x03, "Erroneous SDUs are not delivered ('no')" }, + { 0x07, "Reserved" }, /* All other values are reserved */ + { 0, NULL } +}; + +static const value_string qos_del_order[] = { + { 0x00, "Subscribed delivery order (in MS to network direction)" }, + { 0x01, "With delivery order ('yes')" }, + { 0x02, "Without delivery order ('no')" }, + { 0x03, "Reserved" }, /* All other values are reserved */ + { 0, NULL } +}; + +static const value_string qos_traf_class[] = { + { 0x00, "Subscribed traffic class (in MS to network direction)" }, + { 0x01, "Conversational class" }, + { 0x02, "Streaming class" }, + { 0x03, "Interactive class" }, + { 0x04, "Background class" }, + { 0x07, "Reserved" }, /* All other values are reserved */ + { 0, NULL } +}; + +static const value_string qos_max_sdu_size[] = { + { 0x00, "Subscribed maximum SDU size (in MS to network direction" }, + /* For values from 0x01 to 0x96 (from 1 to 150), use a granularity of 10 octets */ + { 0x97, "1502 octets" }, + { 0x98, "1510 octets" }, + { 0x99, "1520 octets" }, + { 0, NULL } /* All other values are reserved */ +}; + +static const value_string qos_max_ul[] = { + { 0x00, "Subscribed maximum bit rate for uplink (in MS to network direction)" }, + /* For values from 0x01 to 0x3F (from 1 to 63), use a granularity of 1 kbps */ + /* For values from 0x40 to 0x7F, value = 64 kbps + (value - 0x40) * 8 kbps */ + /* For values from 0x80 to 0xFE, value = 576 kbps + (value - 0x80) * 64 kbps */ + { 0xFF, "0 kbps" }, + { 0, NULL } +}; + +static const value_string qos_max_dl[] = { + { 0x00, "Subscribed maximum bit rate for downlink (in MS to network direction)" }, + /* For values from 0x01 to 0x3F (from 1 to 63), use a granularity of 1 kbps */ + /* For values from 0x40 to 0x7F, value = 64 kbps + (value - 0x40) * 8 kbps */ + /* For values from 0x80 to 0xFE, value = 576 kbps + (value - 0x80) * 64 kbps */ + { 0xFF, "0 kbps" }, + { 0, NULL } +}; + +static const value_string qos_res_ber[] = { + { 0x00, "Subscribed residual BER (in MS to network direction)" }, + { 0x01, "1/20 = 5x10^-2" }, + { 0x02, "1/100 = 1x10^-2" }, + { 0x03, "1/200 = 5x10^-3" }, + { 0x04, "1/250 = 4x10^-3" }, + { 0x05, "1/1 000 = 1x10^-3" }, + { 0x06, "1/10 000 = 1x10^-4" }, + { 0x07, "1/100 000 = 1x10^-5" }, + { 0x08, "1/1 000 000 = 1x10^-6" }, + { 0x09, "3/50 000 000 = 6x10^-8" }, + { 0x0F, "Reserved" }, /* All other values are reserved */ + { 0, NULL } +}; + +static const value_string qos_sdu_err_ratio[] = { + { 0x00, "Subscribed SDU error ratio (in MS to network direction)" }, + { 0x01, "1/100 = 1x10^-2" }, + { 0x02, "7/1000 = 7x10^-3" }, + { 0x03, "1/1 000 = 1x10^-3" }, + { 0x04, "1/10 000 = 1x10^-4" }, + { 0x05, "1/100 000 = 1x10^-5" }, + { 0x06, "1/1 000 000 = 1x10^-6" }, + { 0x07, "1/10 = 1x10^-1" }, + { 0x0F, "Reserved" }, /* All other values are reserved */ + { 0, NULL } +}; + +static const value_string qos_traf_handl_prio[] = { + { 0x00, "Subscribed traffic handling priority (in MS to network direction)" }, + { 0x01, "Priority level 1" }, + { 0x02, "Priority level 2" }, + { 0x03, "Priority level 3" }, + { 0, NULL } +}; + +static const value_string qos_trans_delay[] = { + { 0x00, "Subscribed Transfer Delay (in MS to network direction)" }, + { 0x01, "10 ms" }, /* Using a granularity of 10 ms */ + { 0x02, "20 ms" }, + { 0x03, "30 ms" }, + { 0x04, "40 ms" }, + { 0x05, "50 ms" }, + { 0x06, "60 ms" }, + { 0x07, "70 ms" }, + { 0x08, "80 ms" }, + { 0x09, "90 ms" }, + { 0x0A, "100 ms" }, + { 0x0B, "110 ms" }, + { 0x0C, "120 ms" }, + { 0x0D, "130 ms" }, + { 0x0E, "140 ms" }, + { 0x0F, "150 ms" }, + { 0x10, "200 ms" }, /* (For values from 0x10 to 0x1F, value = 200 ms + (value - 0x10) * 50 ms */ + { 0x11, "250 ms" }, + { 0x12, "300 ms" }, + { 0x13, "350 ms" }, + { 0x14, "400 ms" }, + { 0x15, "450 ms" }, + { 0x16, "500 ms" }, + { 0x17, "550 ms" }, + { 0x18, "600 ms" }, + { 0x19, "650 ms" }, + { 0x1A, "700 ms" }, + { 0x1B, "750 ms" }, + { 0x1C, "800 ms" }, + { 0x1D, "850 ms" }, + { 0x1E, "900 ms" }, + { 0x1F, "950 ms" }, + { 0x20, "1000 ms" }, /* For values from 0x20 to 0x3E, value = 1000 ms + (value - 0x20) * 100 ms */ + { 0x21, "1100 ms" }, + { 0x22, "1200 ms" }, + { 0x23, "1300 ms" }, + { 0x24, "1400 ms" }, + { 0x25, "1500 ms" }, + { 0x26, "1600 ms" }, + { 0x27, "1700 ms" }, + { 0x28, "1800 ms" }, + { 0x29, "1900 ms" }, + { 0x2A, "2000 ms" }, + { 0x2B, "2100 ms" }, + { 0x2C, "2200 ms" }, + { 0x2D, "2300 ms" }, + { 0x2E, "2400 ms" }, + { 0x2F, "2500 ms" }, + { 0x30, "2600 ms" }, + { 0x31, "2700 ms" }, + { 0x32, "2800 ms" }, + { 0x33, "2900 ms" }, + { 0x34, "3000 ms" }, + { 0x35, "3100 ms" }, + { 0x36, "3200 ms" }, + { 0x37, "3300 ms" }, + { 0x38, "3400 ms" }, + { 0x39, "3500 ms" }, + { 0x3A, "3600 ms" }, + { 0x3B, "3700 ms" }, + { 0x3C, "3800 ms" }, + { 0x3D, "3900 ms" }, + { 0x3E, "4000 ms" }, + { 0x3F, "Reserved"}, + { 0, NULL } +}; + +static const value_string qos_guar_ul[] = { + { 0x00, "Subscribed guaranteed bit rate for uplink (in MS to network direction)" }, + /* For values from 0x01 to 0x3F (from 1 to 63), use a granularity of 1 kbps */ + /* For values from 0x40 to 0x7F, value = 64 kbps + (value - 0x40) * 8 kbps */ + /* For values from 0x80 to 0xFE, value = 576 kbps + (value - 0x80) * 64 kbps */ + { 0xFF, "0 kbps" }, + { 0, NULL } +}; + +static const value_string qos_guar_dl[] = { + { 0x00, "Subscribed guaranteed bit rate for downlink (in MS to network direction)" }, + /* For values from 0x01 to 0x3F (from 1 to 63), use a granularity of 1 kbps */ + /* For values from 0x40 to 0x7F, value = 64 kbps + (value - 0x40) * 8 kbps */ + /* For values from 0x80 to 0xFE, value = 576 kbps + (value - 0x80) * 64 kbps */ + { 0xFF, "0 kbps" }, + { 0, NULL } +}; + +static const value_string sel_mode_type[] = { + { 0, "MS or network provided APN, subscribed verified" }, + { 1, "MS provided APN, subscription not verified" }, + { 2, "Network provided APN, subscription not verified" }, + { 3, "For future use (Network provided APN, subscription not verified" },/* Shall not be sent. If received, shall be sent as value 2 */ + { 0, NULL } +}; + +static const value_string tr_comm_type[] = { + { 1, "Send data record packet" }, + { 2, "Send possibly duplicated data record packet" }, + { 3, "Cancel data record packet" }, + { 4, "Release data record packet"}, + { 0, NULL } +}; + +/* TODO: CHeck if all ms_reasons are included */ +static const value_string ms_not_reachable_type[] = { + { 0, "No paging response via the MSC" }, + { 1, "IMSI detached" }, + { 2, "Roaming restriction" }, + { 3, "Deregistered in the HLR for non GPRS" }, + { 4, "MS purge for non GPRS" }, + { 5, "No paging response via the SGSN" }, + { 6, "GPRS detached" }, + { 7, "Deregistered in the HLR for non GPRS" }, + { 8, "MS purged for GPRS" }, + { 9, "Unidentified subscriber via the MSC" }, + { 10, "Unidentified subscriber via the SGSN" }, + { 0, NULL } +}; + +/* UMTS: 25.413 v3.4.0, chapter 9.2.1.4, page 80 + */ +static const value_string ranap_cause_type[] = { +/* Radio Network Layer Cause (1-->64) */ + { 1, "RAB preempted" }, + { 2, "Trelocoverall Expiry" }, + { 3, "Trelocprep Expiry" }, + { 4, "Treloccomplete Expiry" }, + { 5, "Tqueing Expiry" }, + { 6, "Relocation Triggered" }, + { 7, "TRELOCalloc Expiry" }, + { 8, "Unable to Estabish During Relocation" }, + { 9, "Unknown Target RNC" }, + { 10, "Relocation Cancelled" }, + { 11, "Successful Relocation" }, + { 12, "Requested Ciphering and/or Integrity Protection Algorithms not Supported" }, + { 13, "Change of Ciphering and/or Integrity Protection is not supported" }, + { 14, "Failure in the Radio Interface Procedure" }, + { 15, "Release due to UTRAN Generated Reason" }, + { 16, "User Inactivity" }, + { 17, "Time Critical Relocation" }, + { 18, "Requested Traffic Class not Available" }, + { 19, "Invalid RAB Parameters Value" }, + { 20, "Requested Maximum Bit Rate not Available" }, + { 21, "Requested Guaranteed Bit Rate not Available" }, + { 22, "Requested Transfer Delay not Achievable" }, + { 23, "Invalid RAB Parameters Combination" }, + { 24, "Condition Violation for SDU Parameters" }, + { 25, "Condition Violation for Traffic Handling Priority" }, + { 26, "Condition Violation for Guaranteed Bit Rate" }, + { 27, "User Plane Versions not Supported" }, + { 28, "Iu UP Failure" }, + { 29, "Relocation Failure in Target CN/RNC or Target System" }, + { 30, "Invalid RAB ID" }, + { 31, "No Remaining RAB" }, + { 32, "Interaction with other procedure" }, + { 33, "Requested Maximum Bit Rate for DL not Available" }, + { 34, "Requested Maximum Bit Rate for UL not Available" }, + { 35, "Requested Guaranteed Bit Rate for DL not Available" }, + { 36, "Requested Guaranteed Bit Rate for UL not Available" }, + { 37, "Repeated Integrity Checking Failure" }, + { 38, "Requested Report Type not supported" }, + { 39, "Request superseded" }, + { 40, "Release due to UE generated signalling connection release" }, + { 41, "Resource Optimisation Relocation" }, + { 42, "Requested Information Not Available" }, + { 43, "Relocation desirable for radio reasons" }, + { 44, "Relocation not supported in Target RNC or Target System" }, + { 45, "Directed Retry" }, + { 46, "Radio Connection With UE Lost" }, +/* Transport Layer Cause (65-->80) */ + { 65, "Signalling Transport Resource Failure" }, + { 66, "Iu Transport Connection Failed to Establish" }, +/* NAS Cause (81-->96) */ + { 81, "User Restriction Start Indication" }, + { 82, "User Restriction End Indication" }, + { 83, "Normal Release" }, +/* Protocol Cause (97-->112) */ + { 97, "Transfer Syntax Error" }, + { 98, "Semantic Error" }, + { 99, "Message not compatible with receiver state" }, + { 100, "Abstract Syntax Error (Reject)" }, + { 101, "Abstract Syntax Error (Ignore and Notify)" }, + { 102, "Abstract Syntax Error (Falsely Constructed Message" }, +/* Miscellaneous Cause (113-->128) */ + { 113, "O & M Intervention" }, + { 114, "No Resource Available" }, + { 115, "Unspecified Failure" }, + { 116, "Network Opimisation" }, +/* Non-standard Cause (129-->255) */ + { 0, NULL } +}; + +static const value_string mm_sec_modep[] = { + { 0, "Used cipher value, UMTS keys and Quintuplets" }, + { 1, "GSM key and triplets" }, + { 2, "UMTS key and quintuplets" }, + { 3, "GSM key and quintuplets" }, + { 0, NULL } +}; + +#define MM_PROTO_GROUP_CALL_CONTROL 0x00 +#define MM_PROTO_BROADCAST_CALL_CONTROL 0x01 +#define MM_PROTO_PDSS1 0x02 +#define MM_PROTO_CALL_CONTROL 0x03 +#define MM_PROTO_PDSS2 0x04 +#define MM_PROTO_MM_NON_GPRS 0x05 +#define MM_PROTO_RR_MGMT 0x06 +#define MM_PROTO_MM_GPRS 0x08 +#define MM_PROTO_SMS 0x09 +#define MM_PROTO_SESSION_MGMT 0x0A +#define MM_PROTO_NON_CALL_RELATED 0x0B + +static const value_string mm_proto_disc[] = { + { MM_PROTO_GROUP_CALL_CONTROL, "Group call control" }, + { MM_PROTO_BROADCAST_CALL_CONTROL, "Broadcast call control" }, + { MM_PROTO_PDSS1, "PDSS1" }, + { MM_PROTO_CALL_CONTROL, "Call control; call related SS messages" }, + { MM_PROTO_PDSS2, "PDSS2" }, + { MM_PROTO_MM_NON_GPRS, "Mobility Management messages for non-GPRS services" }, + { MM_PROTO_RR_MGMT, "Radio Resource management messages" }, + { MM_PROTO_MM_GPRS, "Mobility Management messages for GPRS services" }, + { MM_PROTO_SMS, "SMS" }, + { MM_PROTO_SESSION_MGMT, "Session Management messages" }, + { MM_PROTO_NON_CALL_RELATED, "Non-call related SS messages" }, + { 0, NULL } +}; + +static const value_string mm_rr_mess[] = { + { 0x3C, "RR initialization request" }, + { 0x3B, "Additional assignment" }, + { 0x3F, "Immediate assignment" }, + { 0x39, "Immediate assignment extended" }, + { 0x3A, "Immediate assignment reject" }, + + { 0x35, "Ciphering mode command" }, + { 0x32, "Ciphering mode complete" }, + + { 0x30, "Configuration change command" }, + { 0x31, "Configuration change ack" }, + { 0x33, "Configuration change reject" }, + + { 0x2E, "Assignment command" }, + { 0x29, "Assignment complete" }, + { 0x2F, "Assigment failure" }, + { 0x2B, "Handover command" }, + { 0x2C, "Handover complete" }, + { 0x28, "Handover failure" }, + { 0x2D, "Physical information" }, + + { 0x08, "RR-cell change order" }, + { 0x23, "PDCH assignment command" }, + + { 0x0D, "Channel release" }, + { 0x0A, "Partial release" }, + { 0x0F, "PArtial release complete" }, + + { 0x21, "Paging request type 1" }, + { 0x22, "Paging request type 2" }, + { 0x24, "Paging request type 3" }, + { 0x27, "Paging response" }, + { 0x20, "Notification/NCH" }, + { 0x25, "Notification/FACCH" }, + { 0x26, "Reserved" }, + { 0x0B, "Reserved" }, + + { 0x18, "System information type 8" }, + { 0x19, "System information type 1" }, + { 0x1A, "System information type 2" }, + { 0x1B, "System information type 3" }, + { 0x1C, "System information type 4" }, + { 0x1D, "System information type 5" }, + { 0x1E, "System information type 6" }, + { 0x1F, "System information type 7" }, + + { 0x02, "System information type 2bis" }, + { 0x03, "System information type 2ter" }, + { 0x05, "System information type 5bis" }, + { 0x06, "System information type 5ter" }, + { 0x04, "System information 9" }, + { 0x00, "System information 13" }, + { 0x01, "System information 14" }, + + { 0x3D, "System information type 16" }, + { 0x3E, "System information type 17" }, + + { 0x10, "Channel mode modify" }, + { 0x12, "RR status" }, + { 0x17, "Channel mode modify ack" }, + { 0x14, "Frequency redefinition" }, + { 0x15, "Measurement report" }, + { 0x16, "Classmark change" }, + { 0x13, "Classmark enquiry" }, + { 0x36, "Extended measurement report" }, + { 0x37, "Extended measurement order" }, + { 0x34, "GPRS suspension request" }, + + { 0x09, "VGCS uplink grant" }, + { 0x0E, "Uplink release" }, + { 0x0C, "Uplink free" }, + { 0x2A, "Uplink busy" }, + { 0x11, "Talker indication" }, + + { 0, NULL } +}; + +static const value_string mm_mm_mess[] = { + { 0x01, "IMSI DETACH INDICATION" }, + { 0x02, "LOCATION UPDATING ACCEPT" }, + { 0x04, "LOCATION UPDATING REJECT" }, + { 0x08, "LOCATION UPDATING REQUEST" }, + { 0x11, "AUTHENTICATION REJECT" }, + { 0x12, "AUTHENTICATION REQUEST" }, + { 0x14, "AUTHENTICATION RESPONSE" }, + { 0x18, "IDENTITY REQUEST" }, + { 0x19, "IDENTITY RESPONSE" }, + { 0x1A, "TMSI REALLOCATION COMMAND" }, + { 0x1B, "TMSI REALLOCATION COMPLETE" }, + { 0x21, "CM SERVICE ACCEPT" }, + { 0x22, "CM SERVICE REJECT" }, + { 0x23, "CM SERVICE ABORT" }, + { 0x24, "CM SERVICE REQUEST" }, + { 0x25, "CM SERVICE PROMPT" }, + { 0x26, "NOTIFICATION RESPONSE" }, + { 0x28, "CM RE-ESTABLISHMENT REQUEST" }, + { 0x29, "ABORT" }, + { 0x30, "MM NULL" }, + { 0x31, "MM STATUS" }, + { 0x32, "MM INFORMATION" }, + { 0, NULL } +}; + +static const value_string mm_cc_mess[] = { + { 0x00, "escape to nationally specific" }, +/*{ 0 x 0 0, "- - - Call establishment messages:" },*/ + { 0x01, "ALERTING" }, + { 0x08, "CALL CONFIRMED" }, + { 0x02, "CALL PROCEEDING" }, + { 0x07, "CONNECT" }, + { 0x0F, "CONNECT ACKNOWLEDGE" }, + { 0x0E, "EMERGENCY SETUP" }, + { 0x03, "PROGRESS" }, + { 0x04, "CC-ESTABLISHMENT" }, + { 0x06, "CC-ESTABLISHMENT CONFIRMED" }, + { 0x0B, "RECALL" }, + { 0x09, "START CC" }, + { 0x05, "SETUP" }, +/*{ 0 x 0 1, "- - - Call information phase messages:" },*/ + { 0x17, "MODIFY" }, + { 0x1F, "MODIFY COMPLETE" }, + { 0x13, "MODIFY REJECT" }, + { 0x10, "USER INFORMATION" }, + { 0x18, "HOLD" }, + { 0x19, "HOLD ACKNOWLEDGE" }, + { 0x1A, "HOLD REJECT" }, + { 0x1C, "RETRIEVE" }, + { 0x1D, "RETRIEVE ACKNOWLEDGE" }, + { 0x1E, "RETRIEVE REJECT" }, +/*{ 0 x 1 0, "- - - Call clearing messages:" },*/ + { 0x25, "DISCONNECT" }, + { 0x2D, "RELEASE" }, + { 0x2A, "RELEASE COMPLETE" }, +/*{ 0 x 1 1, "- - - Miscellaneous messages:" },*/ + { 0x39, "CONGESTION CONTROL" }, + { 0x3E, "NOTIFY" }, + { 0x3D, "STATUS" }, + { 0x34, "STATUS ENQUIRY" }, + { 0x35, "START DTMF" }, + { 0x31, "STOP DTMF" }, + { 0x32, "STOP DTMF ACKNOWLEDGE" }, + { 0x36, "START DTMF ACKNOWLEDGE" }, + { 0x37, "START DTMF REJECT" }, + { 0x3A, "FACILITY" }, + { 0, NULL } +}; + +static const value_string mm_gprs_mess[] = { + { 0x01, "Attach request" }, + { 0x02, "Attach accept" }, + { 0x03, "Attach complete" }, + { 0x04, "Attach reject" }, + { 0x05, "Detach request" }, + { 0x06, "Detach accept" }, + { 0x08, "Routing area update request" }, + { 0x09, "Routing area update accept" }, + { 0x0A, "Routing area update complete" }, + { 0x0B, "Routing area update reject" }, + { 0x10, "P-TMSI reallocation command" }, + { 0x11, "P-TMSI reallocation complete" }, + { 0x12, "Authentication and ciphering req" }, + { 0x13, "Authentication and ciphering resp" }, + { 0x14, "Authentication and ciphering rej" }, + { 0x15, "Identity request" }, + { 0x16, "Identity response" }, + { 0x20, "GMM status" }, + { 0x21, "GMM information" }, + { 0, NULL } +}; + +static const value_string tft_code_type[] = { + { 0, "Spare" }, + { 1, "Create new TFT" }, + { 2, "Delete existing TFT" }, + { 3, "Add packet filters to existing TFT" }, + { 4, "Replace packet filters in existing TFT" }, + { 5, "Delete packet filters from existing TFT" }, + { 6, "Reserved" }, + { 7, "Reserved" }, + { 0, NULL } +}; + + +static dissector_handle_t ip_handle; +static dissector_handle_t ipv6_handle; +static dissector_handle_t ppp_handle; +static dissector_handle_t data_handle; +static dissector_handle_t gtpcdr_handle; + +static int decode_gtp_cause (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_imsi (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_rai (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_tlli (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_ptmsi (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_qos_gprs (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_reorder (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_auth_tri (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_map_cause (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_ptmsi_sig (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_ms_valid (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_recovery (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_sel_mode (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_16 (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_17 (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_18 (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_19 (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_nsapi (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_ranap_cause (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_rab_cntxt (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_rp_sms (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_rp (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_pkt_flow_id (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_chrg_char (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_trace_ref (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_trace_type (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_ms_reason (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_tr_comm (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_chrg_id (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_user_addr (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_mm_cntxt (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_pdp_cntxt (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_apn (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_gsn_addr (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_proto_conf (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_msisdn (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_qos_umts (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_auth_qui (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_tft (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_target_id (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_utran_cont (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_rab_setup (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_hdr_list (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_trigger_id (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_omc_id (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_chrg_addr (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_rel_pack (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_can_pack (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_data_req (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_data_resp (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_node_addr (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_priv_ext (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); +static int decode_gtp_unknown (tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); + +typedef struct _gtp_opt { + int optcode; + int (*decode)(tvbuff_t *, int, packet_info *, proto_tree *); +} gtp_opt_t; + +static const gtp_opt_t gtpopt[] = { + { GTP_EXT_CAUSE, decode_gtp_cause }, + { GTP_EXT_IMSI, decode_gtp_imsi }, + { GTP_EXT_RAI, decode_gtp_rai }, + { GTP_EXT_TLLI, decode_gtp_tlli }, + { GTP_EXT_PTMSI, decode_gtp_ptmsi }, + { GTP_EXT_QOS_GPRS, decode_gtp_qos_gprs }, + { GTP_EXT_REORDER, decode_gtp_reorder }, + { GTP_EXT_AUTH_TRI, decode_gtp_auth_tri }, + { GTP_EXT_MAP_CAUSE, decode_gtp_map_cause }, + { GTP_EXT_PTMSI_SIG, decode_gtp_ptmsi_sig }, + { GTP_EXT_MS_VALID, decode_gtp_ms_valid }, + { GTP_EXT_RECOVER, decode_gtp_recovery }, + { GTP_EXT_SEL_MODE, decode_gtp_sel_mode }, + { GTP_EXT_16, decode_gtp_16 }, + { GTP_EXT_17, decode_gtp_17 }, + { GTP_EXT_18, decode_gtp_18 }, + { GTP_EXT_19, decode_gtp_19 }, + { GTP_EXT_NSAPI, decode_gtp_nsapi }, + { GTP_EXT_RANAP_CAUSE, decode_gtp_ranap_cause }, + { GTP_EXT_RAB_CNTXT, decode_gtp_rab_cntxt }, + { GTP_EXT_RP_SMS, decode_gtp_rp_sms }, + { GTP_EXT_RP, decode_gtp_rp }, + { GTP_EXT_PKT_FLOW_ID, decode_gtp_pkt_flow_id }, + { GTP_EXT_CHRG_CHAR, decode_gtp_chrg_char }, + { GTP_EXT_TRACE_REF, decode_gtp_trace_ref }, + { GTP_EXT_TRACE_TYPE, decode_gtp_trace_type }, + { GTPv1_EXT_MS_REASON, decode_gtp_ms_reason }, + { GTP_EXT_TR_COMM, decode_gtp_tr_comm }, + { GTP_EXT_CHRG_ID, decode_gtp_chrg_id }, + { GTP_EXT_USER_ADDR, decode_gtp_user_addr }, + { GTP_EXT_MM_CNTXT, decode_gtp_mm_cntxt }, + { GTP_EXT_PDP_CNTXT, decode_gtp_pdp_cntxt }, + { GTP_EXT_APN, decode_gtp_apn }, + { GTP_EXT_PROTO_CONF, decode_gtp_proto_conf }, + { GTP_EXT_GSN_ADDR, decode_gtp_gsn_addr }, + { GTP_EXT_MSISDN, decode_gtp_msisdn }, + { GTP_EXT_QOS_UMTS, decode_gtp_qos_umts }, /* 3G */ + { GTP_EXT_AUTH_QUI, decode_gtp_auth_qui }, /* 3G */ + { GTP_EXT_TFT, decode_gtp_tft }, /* 3G */ + { GTP_EXT_TARGET_ID, decode_gtp_target_id }, /* 3G */ + { GTP_EXT_UTRAN_CONT, decode_gtp_utran_cont }, /* 3G */ + { GTP_EXT_RAB_SETUP, decode_gtp_rab_setup }, /* 3G */ + { GTP_EXT_HDR_LIST, decode_gtp_hdr_list }, /* 3G */ + { GTP_EXT_TRIGGER_ID, decode_gtp_trigger_id }, /* 3G */ + { GTP_EXT_OMC_ID, decode_gtp_omc_id }, /* 3G */ + { GTP_EXT_REL_PACK, decode_gtp_rel_pack }, /* charging */ + { GTP_EXT_CAN_PACK, decode_gtp_can_pack }, /* charging */ + { GTP_EXT_CHRG_ADDR, decode_gtp_chrg_addr }, + { GTP_EXT_DATA_REQ, decode_gtp_data_req }, /* charging */ + { GTP_EXT_DATA_RESP, decode_gtp_data_resp }, /* charging */ + { GTP_EXT_NODE_ADDR, decode_gtp_node_addr }, + { GTP_EXT_PRIV_EXT, decode_gtp_priv_ext }, + { 0, decode_gtp_unknown } +}; + +struct _gtp_hdr { + guint8 flags; + guint8 message; + guint16 length; +}; + +static guint8 gtp_version = 0; +static char *yesno[] = { "no", "yes" }; + +static void +col_append_str_gtp(column_info *cinfo, gint el, gchar *proto_name) { + + int i; + int max_len; + gchar _tmp[COL_MAX_LEN]; + + max_len = COL_MAX_LEN; + + for (i = 0; i < cinfo->num_cols; i++) { + if (cinfo->fmt_matx[i][el]) { + if (cinfo->col_data[i] != cinfo->col_buf[i]) { + + strncpy(cinfo->col_buf[i], cinfo->col_data[i], max_len); + cinfo->col_buf[i][max_len - 1] = '\0'; + } + + _tmp[0] = '\0'; + strcat(_tmp, proto_name); + strcat(_tmp, " <"); + strcat(_tmp, cinfo->col_buf[i]); + strcat(_tmp, ">"); + cinfo->col_buf[i][0] = '\0'; + strcat(cinfo->col_buf[i], _tmp); + cinfo->col_data[i] = cinfo->col_buf[i]; + } + } +} + +static gchar * +id_to_str(const guint8 *ad) { + + static gchar str[17] = " "; + guint8 bits8to5, bits4to1; + int i, j = 0; + static const gchar hex_digits[10] = "0123456789"; + + for (i = 0; i < 8; i++) { + bits8to5 = (ad[i] >> 4) & 0x0F; + bits4to1 = ad[i] & 0x0F; + if (bits8to5 < 0xA) + str[j++] = hex_digits[bits4to1]; + if (bits4to1 < 0xA) + str[j++] = hex_digits[bits8to5]; + } + str[j] = '\0'; + return str; +} + +static gchar * +imsi_to_str(const guint8 *ad) { + + static gchar str[17] = " "; + int i, j = 0; + + for (i = 0; i < 8; i++) { + if ((ad[i] & 0x0F) <= 9) str[j++] = (ad[i] & 0x0F) + 0x30; + if (((ad[i] >> 4) & 0x0F) <= 9) str[j++] = ((ad[i] >> 4) & 0x0F) + 0x30; + } + str[j] = '\0'; + + return str; +} + +static gchar * +msisdn_to_str(const guint8 *ad, int len) { + + static gchar str[18] = "+ "; + guint8 bits8to5, bits4to1; + int i, j = 1; + static const gchar hex_digits[10] = "0123456789"; + + for (i = 1; i < len && i < 9; i++) { + bits8to5 = (ad[i] >> 4) & 0x0F; + bits4to1 = ad[i] & 0x0F; + if (bits4to1 < 0xA) + str[j++] = hex_digits[bits4to1]; + if (bits8to5 < 0xA) + str[j++] = hex_digits[bits8to5]; + } + str[j] = '\0'; + + return str; +} + +/* Next definitions and function check_field_presence checks if given field + * in GTP packet is compliant with ETSI + */ +typedef struct _header { + guint8 code; + guint8 presence; +} ext_header; + +typedef struct _message { + guint8 code; + ext_header fields[32]; +} _gtp_mess_items; + +/* --------------------- + * GPRS messages + * ---------------------*/ +static _gtp_mess_items gprs_mess_items[] = { + +{ + GTP_MSG_ECHO_REQ, { + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_ECHO_RESP, { + { GTP_EXT_RECOVER, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_VER_NOT_SUPP, { + { 0, 0 } + } +}, +{ + GTP_MSG_NODE_ALIVE_REQ, { + { GTP_EXT_NODE_ADDR, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_NODE_ALIVE_RESP, { + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_REDIR_REQ, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_NODE_ADDR, GTP_OPTIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_REDIR_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_CREATE_PDP_REQ, { + { GTP_EXT_QOS_GPRS, GTP_MANDATORY }, + { GTP_EXT_RECOVER, GTP_OPTIONAL }, + { GTP_EXT_SEL_MODE, GTP_MANDATORY }, + { GTP_EXT_FLOW_LABEL, GTP_MANDATORY }, + { GTP_EXT_FLOW_SIG, GTP_MANDATORY }, + { GTP_EXT_MSISDN, GTP_MANDATORY }, + { GTP_EXT_USER_ADDR, GTP_MANDATORY }, + { GTP_EXT_APN, GTP_MANDATORY }, + { GTP_EXT_PROTO_CONF, GTP_OPTIONAL }, + { GTP_EXT_GSN_ADDR, GTP_MANDATORY }, + { GTP_EXT_GSN_ADDR, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_CREATE_PDP_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_QOS_GPRS, GTP_CONDITIONAL }, + { GTP_EXT_REORDER, GTP_CONDITIONAL }, + { GTP_EXT_RECOVER, GTP_OPTIONAL }, + { GTP_EXT_FLOW_LABEL, GTP_CONDITIONAL }, + { GTP_EXT_FLOW_SIG, GTP_CONDITIONAL }, + { GTP_EXT_CHRG_ID, GTP_CONDITIONAL }, + { GTP_EXT_USER_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_PROTO_CONF, GTP_OPTIONAL }, + { GTP_EXT_GSN_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_GSN_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_CHRG_ADDR, GTP_OPTIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_UPDATE_PDP_REQ, { + { GTP_EXT_QOS_GPRS, GTP_MANDATORY }, + { GTP_EXT_RECOVER, GTP_OPTIONAL }, + { GTP_EXT_FLOW_LABEL, GTP_MANDATORY }, + { GTP_EXT_FLOW_SIG, GTP_MANDATORY }, + { GTP_EXT_GSN_ADDR, GTP_MANDATORY }, + { GTP_EXT_GSN_ADDR, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 }, + } +}, +{ + GTP_MSG_UPDATE_PDP_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_QOS_GPRS, GTP_CONDITIONAL }, + { GTP_EXT_RECOVER, GTP_OPTIONAL }, + { GTP_EXT_FLOW_LABEL, GTP_CONDITIONAL }, + { GTP_EXT_FLOW_SIG, GTP_CONDITIONAL }, + { GTP_EXT_CHRG_ID, GTP_CONDITIONAL }, + { GTP_EXT_GSN_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_GSN_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_CHRG_ADDR, GTP_OPTIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_DELETE_PDP_REQ, { + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_DELETE_PDP_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 }, + } +}, +{ + GTP_MSG_CREATE_AA_PDP_REQ, { + { GTP_EXT_QOS_GPRS, GTP_MANDATORY }, + { GTP_EXT_RECOVER, GTP_OPTIONAL }, + { GTP_EXT_SEL_MODE, GTP_MANDATORY }, + { GTP_EXT_FLOW_LABEL, GTP_MANDATORY }, + { GTP_EXT_FLOW_SIG, GTP_MANDATORY }, + { GTP_EXT_USER_ADDR, GTP_MANDATORY }, + { GTP_EXT_APN, GTP_MANDATORY }, + { GTP_EXT_PROTO_CONF, GTP_OPTIONAL }, + { GTP_EXT_GSN_ADDR, GTP_MANDATORY }, + { GTP_EXT_GSN_ADDR, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_CREATE_AA_PDP_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_QOS_GPRS, GTP_CONDITIONAL }, + { GTP_EXT_REORDER, GTP_CONDITIONAL }, + { GTP_EXT_RECOVER, GTP_OPTIONAL }, + { GTP_EXT_FLOW_LABEL, GTP_CONDITIONAL }, + { GTP_EXT_FLOW_SIG, GTP_CONDITIONAL }, + { GTP_EXT_CHRG_ID, GTP_CONDITIONAL }, + { GTP_EXT_USER_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_PROTO_CONF, GTP_OPTIONAL }, + { GTP_EXT_GSN_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_GSN_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_CHRG_ADDR, GTP_OPTIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_DELETE_AA_PDP_REQ, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_DELETE_AA_PDP_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_ERR_IND, { + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_PDU_NOTIFY_REQ, { + { GTP_EXT_USER_ADDR, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_PDU_NOTIFY_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_PDU_NOTIFY_REJ_REQ, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_USER_ADDR, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_PDU_NOTIFY_REJ_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_SEND_ROUT_INFO_REQ, { + { GTP_EXT_IMSI, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_SEND_ROUT_INFO_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_IMSI, GTP_MANDATORY }, + { GTP_EXT_MAP_CAUSE, GTP_OPTIONAL }, + { GTP_EXT_MS_REASON, GTP_OPTIONAL }, + { GTP_EXT_GSN_ADDR, GTP_OPTIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_FAIL_REP_REQ, { + { GTP_EXT_IMSI, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_FAIL_REP_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_MAP_CAUSE, GTP_OPTIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_MS_PRESENT_REQ, { + { GTP_EXT_IMSI, GTP_MANDATORY }, + { GTP_EXT_GSN_ADDR, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_MS_PRESENT_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_IDENT_REQ, { + { GTP_EXT_RAI, GTP_MANDATORY }, + { GTP_EXT_PTMSI, GTP_MANDATORY }, + { GTP_EXT_PTMSI_SIG, GTP_OPTIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_IDENT_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_IMSI, GTP_CONDITIONAL }, + { GTP_EXT_AUTH_TRI, GTP_OPTIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_SGSN_CNTXT_REQ, { + { GTP_EXT_IMSI, GTP_CONDITIONAL }, + { GTP_EXT_RAI, GTP_MANDATORY }, + { GTP_EXT_TLLI, GTP_MANDATORY }, + { GTP_EXT_PTMSI_SIG, GTP_OPTIONAL }, + { GTP_EXT_MS_VALID, GTP_OPTIONAL }, + { GTP_EXT_FLOW_SIG, GTP_MANDATORY }, + { 0, 0 } + } +}, +{ + GTP_MSG_SGSN_CNTXT_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_IMSI, GTP_CONDITIONAL }, + { GTP_EXT_FLOW_SIG, GTP_CONDITIONAL }, + { GTP_EXT_MM_CNTXT, GTP_CONDITIONAL }, + { GTP_EXT_PDP_CNTXT, GTP_CONDITIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_SGSN_CNTXT_ACK, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_FLOW_II, GTP_CONDITIONAL }, + { GTP_EXT_GSN_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_DATA_TRANSF_REQ, { + { GTP_EXT_TR_COMM, GTP_MANDATORY }, + { GTP_EXT_DATA_REQ, GTP_CONDITIONAL }, + { GTP_EXT_REL_PACK, GTP_CONDITIONAL }, + { GTP_EXT_CAN_PACK, GTP_CONDITIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_DATA_TRANSF_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_DATA_RESP, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + 0, { + { 0, 0 } + } +} +}; + +/* ----------------------------- + * UMTS messages + * -----------------------------*/ +static _gtp_mess_items umts_mess_items[] = { + +{ + GTP_MSG_ECHO_REQ, { + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_ECHO_RESP, { + { GTP_EXT_RECOVER, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_VER_NOT_SUPP, { + { 0, 0 } + } +}, +{ + GTP_MSG_NODE_ALIVE_REQ, { + { GTP_EXT_NODE_ADDR, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_NODE_ALIVE_RESP, { + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_REDIR_REQ, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_NODE_ADDR, GTP_OPTIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_REDIR_REQ, { + { 0, 0 } + } +}, +{ + GTP_MSG_CREATE_PDP_REQ, { + { GTP_EXT_IMSI, GTP_CONDITIONAL }, + { GTP_EXT_RECOVER, GTP_OPTIONAL }, + { GTP_EXT_SEL_MODE, GTP_CONDITIONAL }, + { GTP_EXT_TEID, GTP_MANDATORY }, + { GTP_EXT_TEID_CP, GTP_CONDITIONAL }, + { GTP_EXT_NSAPI, GTP_MANDATORY }, + { GTP_EXT_NSAPI, GTP_CONDITIONAL }, + { GTP_EXT_CHRG_CHAR, GTP_OPTIONAL }, + { GTP_EXT_TRACE_REF, GTP_OPTIONAL }, + { GTP_EXT_TRACE_TYPE, GTP_OPTIONAL }, + { GTP_EXT_USER_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_APN, GTP_CONDITIONAL }, + { GTP_EXT_PROTO_CONF, GTP_CONDITIONAL }, + { GTP_EXT_GSN_ADDR, GTP_MANDATORY }, + { GTP_EXT_GSN_ADDR, GTP_MANDATORY }, + { GTP_EXT_MSISDN, GTP_CONDITIONAL }, + { GTP_EXT_QOS_UMTS, GTP_MANDATORY }, + { GTP_EXT_TFT, GTP_CONDITIONAL }, + { GTP_EXT_TRIGGER_ID, GTP_OPTIONAL }, + { GTP_EXT_OMC_ID, GTP_OPTIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_CREATE_PDP_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_REORDER, GTP_CONDITIONAL }, + { GTP_EXT_RECOVER, GTP_OPTIONAL }, + { GTP_EXT_TEID, GTP_CONDITIONAL }, + { GTP_EXT_TEID_CP, GTP_CONDITIONAL }, + { GTP_EXT_CHRG_ID, GTP_CONDITIONAL }, + { GTP_EXT_USER_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_PROTO_CONF, GTP_OPTIONAL }, + { GTP_EXT_GSN_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_GSN_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_QOS_UMTS, GTP_CONDITIONAL }, + { GTP_EXT_CHRG_ADDR, GTP_OPTIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ /* checked, SGSN -> GGSN */ + GTP_MSG_UPDATE_PDP_REQ, { + { GTP_EXT_IMSI, GTP_CONDITIONAL }, + { GTP_EXT_RECOVER, GTP_OPTIONAL }, + { GTP_EXT_TEID, GTP_MANDATORY }, + { GTP_EXT_TEID_CP, GTP_CONDITIONAL }, + { GTP_EXT_NSAPI, GTP_MANDATORY }, + { GTP_EXT_TRACE_REF, GTP_OPTIONAL }, + { GTP_EXT_TRACE_TYPE, GTP_OPTIONAL }, + { GTP_EXT_GSN_ADDR, GTP_MANDATORY }, + { GTP_EXT_GSN_ADDR, GTP_MANDATORY }, + { GTP_EXT_QOS_UMTS, GTP_MANDATORY }, + { GTP_EXT_TFT, GTP_OPTIONAL }, + { GTP_EXT_TRIGGER_ID, GTP_OPTIONAL }, + { GTP_EXT_OMC_ID, GTP_OPTIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ /* checked, GGSN -> SGSN */ + GTP_MSG_UPDATE_PDP_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_RECOVER, GTP_OPTIONAL }, + { GTP_EXT_TEID, GTP_CONDITIONAL }, + { GTP_EXT_TEID_CP, GTP_CONDITIONAL }, + { GTP_EXT_CHRG_ID, GTP_CONDITIONAL }, + { GTP_EXT_GSN_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_GSN_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_QOS_UMTS, GTP_CONDITIONAL }, + { GTP_EXT_CHRG_ADDR, GTP_OPTIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_DELETE_PDP_REQ, { + { GTP_EXT_TEAR_IND, GTP_CONDITIONAL }, + { GTP_EXT_NSAPI, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_DELETE_PDP_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_ERR_IND, { + { GTP_EXT_TEID, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_PDU_NOTIFY_REQ, { + { GTP_EXT_IMSI, GTP_MANDATORY }, + { GTP_EXT_TEID_CP, GTP_MANDATORY }, + { GTP_EXT_USER_ADDR, GTP_MANDATORY }, + { GTP_EXT_APN, GTP_MANDATORY }, + { GTP_EXT_GSN_ADDR, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_PDU_NOTIFY_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_PDU_NOTIFY_REJ_REQ, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_TEID_CP, GTP_MANDATORY }, + { GTP_EXT_USER_ADDR, GTP_MANDATORY }, + { GTP_EXT_APN, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_PDU_NOTIFY_REJ_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_SUPP_EXT_HDR, { + { GTP_EXT_HDR_LIST, GTP_MANDATORY }, + { 0, 0 } + } +}, +{ + GTP_MSG_SEND_ROUT_INFO_REQ, { + { GTP_EXT_IMSI, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_SEND_ROUT_INFO_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_IMSI, GTP_MANDATORY }, + { GTP_EXT_MAP_CAUSE, GTP_OPTIONAL }, + { GTPv1_EXT_MS_REASON, GTP_OPTIONAL }, + { GTP_EXT_GSN_ADDR, GTP_OPTIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_FAIL_REP_REQ, { + { GTP_EXT_IMSI, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_FAIL_REP_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_MAP_CAUSE, GTP_OPTIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_MS_PRESENT_REQ, { + { GTP_EXT_IMSI, GTP_MANDATORY }, + { GTP_EXT_GSN_ADDR, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_MS_PRESENT_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_IDENT_REQ, { + { GTP_EXT_RAI, GTP_MANDATORY }, + { GTP_EXT_PTMSI, GTP_MANDATORY }, + { GTP_EXT_PTMSI_SIG, GTP_CONDITIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_IDENT_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_IMSI, GTP_CONDITIONAL }, + { GTP_EXT_AUTH_TRI, GTP_CONDITIONAL }, + { GTP_EXT_AUTH_QUI, GTP_CONDITIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_SGSN_CNTXT_REQ, { + { GTP_EXT_IMSI, GTP_CONDITIONAL }, + { GTP_EXT_RAI, GTP_MANDATORY }, + { GTP_EXT_TLLI, GTP_CONDITIONAL }, + { GTP_EXT_PTMSI, GTP_CONDITIONAL }, + { GTP_EXT_PTMSI_SIG, GTP_CONDITIONAL }, + { GTP_EXT_MS_VALID, GTP_OPTIONAL }, + { GTP_EXT_TEID_CP, GTP_MANDATORY }, + { GTP_EXT_GSN_ADDR, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_SGSN_CNTXT_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_IMSI, GTP_CONDITIONAL }, + { GTP_EXT_TEID_CP, GTP_CONDITIONAL }, + { GTP_EXT_RP_SMS, GTP_OPTIONAL }, + { GTP_EXT_RP, GTP_OPTIONAL }, + { GTP_EXT_PKT_FLOW_ID, GTP_OPTIONAL }, + { GTP_EXT_MM_CNTXT, GTP_CONDITIONAL }, + { GTP_EXT_PDP_CNTXT, GTP_CONDITIONAL }, + { GTP_EXT_GSN_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_SGSN_CNTXT_ACK, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_TEID_II, GTP_CONDITIONAL }, + { GTP_EXT_GSN_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_FORW_RELOC_REQ, { + { GTP_EXT_IMSI, GTP_MANDATORY }, + { GTP_EXT_TEID_CP, GTP_MANDATORY }, + { GTP_EXT_RANAP_CAUSE, GTP_MANDATORY }, + { GTP_EXT_MM_CNTXT, GTP_MANDATORY }, + { GTP_EXT_PDP_CNTXT, GTP_CONDITIONAL }, + { GTP_EXT_GSN_ADDR, GTP_MANDATORY }, + { GTP_EXT_TARGET_ID, GTP_MANDATORY }, + { GTP_EXT_UTRAN_CONT, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_FORW_RELOC_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_TEID_CP, GTP_CONDITIONAL }, + { GTP_EXT_RANAP_CAUSE, GTP_CONDITIONAL }, + { GTP_EXT_GSN_ADDR, GTP_CONDITIONAL }, + { GTP_EXT_UTRAN_CONT, GTP_OPTIONAL }, + { GTP_EXT_RAB_SETUP, GTP_CONDITIONAL }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_FORW_RELOC_COMP, { + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_RELOC_CANCEL_REQ, { + { GTP_EXT_IMSI, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_RELOC_CANCEL_RESP, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_FORW_RELOC_ACK, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_FORW_SRNS_CNTXT, { + { GTP_EXT_RAB_CNTXT, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + GTP_MSG_FORW_SRNS_CNTXT_ACK, { + { GTP_EXT_CAUSE, GTP_MANDATORY }, + { GTP_EXT_PRIV_EXT, GTP_OPTIONAL }, + { 0, 0 } + } +}, +{ + 0, { + { 0, 0 } + } +} +}; + +static int +check_field_presence(guint8 message, guint8 field, int *position) { + + guint i = 0; + _gtp_mess_items *mess_items; + + switch(gtp_version) { + case 0: + mess_items = gprs_mess_items; + break; + case 1: + mess_items = umts_mess_items; + break; + default: + return -2; + } + + while (mess_items[i].code) { + if (mess_items[i].code == message) { + + while (mess_items[i].fields[*position].code) { + if (mess_items[i].fields[*position].code == field) { + (*position)++; + return 0; + } else { + if (mess_items[i].fields[*position].presence == GTP_MANDATORY) { + return mess_items[i].fields[(*position)++].code; + } else { + (*position)++; + }} + } + return -1; + } + i++; + } + + return -2; +} + +/* Decoders of fields in extension headers, each function returns no of bytes from field */ + +/* GPRS: 9.60 v7.6.0, chapter + * UMTS: 29.060 v4.0, chapter + */ +static int +decode_gtp_cause(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint8 cause; + + cause = tvb_get_guint8(tvb, offset+1); + + proto_tree_add_uint(tree, hf_gtp_cause, tvb, offset, 2, cause); + + return 2; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.2 + * UMTS: 29.060 v4.0, chapter 7.7.2 + */ +static int +decode_gtp_imsi(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint8 imsi_val[8]; + gchar *imsi_str; + + tvb_memcpy(tvb, imsi_val, offset+1, 8); + imsi_str = imsi_to_str (imsi_val); + + proto_tree_add_string (tree, hf_gtp_imsi, tvb, offset, 9, imsi_str); + + return 9; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.3 + * UMTS: 29.060 v4.0, chapter 7.7.3 + */ +static int +decode_gtp_rai(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + proto_tree *ext_tree_rai; + proto_item *te; + guint8 byte[3]; + guint16 mnc, mcc; + + te = proto_tree_add_text(tree, tvb, offset, 1, val_to_str(GTP_EXT_RAI, gtp_val, "Unknown message")); + ext_tree_rai = proto_item_add_subtree(te, ett_gtp_rai); + + byte[0] = tvb_get_guint8 (tvb, offset + 1); + byte[1] = tvb_get_guint8 (tvb, offset + 2); + byte[2] = tvb_get_guint8 (tvb, offset + 3); + mcc = (byte[0] & 0x0F) * 100 + ((byte[0] & 0xF0) >> 4) * 10 + (byte[1] & 0x0F ); + if ((byte[1] & 0xF0) == 0xF0) + mnc = (byte[2] & 0x0F) * 10 + ((byte[2] & 0xF0) >> 4); + else + mnc = (byte[2] & 0x0F) * 100 + ((byte[2] & 0xF0) >> 4 ) * 10 + ((byte[1] & 0xF0) >> 4); + + proto_tree_add_uint(ext_tree_rai, hf_gtp_rai_mcc, tvb, offset+1, 2, mcc); + proto_tree_add_uint(ext_tree_rai, hf_gtp_rai_mnc, tvb, offset+2, 2, mnc); + proto_tree_add_uint(ext_tree_rai, hf_gtp_rai_lac, tvb, offset+4, 2, tvb_get_ntohs (tvb, offset+4)); + proto_tree_add_uint(ext_tree_rai, hf_gtp_rai_rac, tvb, offset+6, 1, tvb_get_guint8 (tvb, offset+6)); + + return 7; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.4, page 39 + * UMTS: 29.060 v4.0, chapter 7.7.4, page 47 + */ +static int +decode_gtp_tlli(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint32 tlli; + + tlli = tvb_get_ntohl(tvb, offset+1); + proto_tree_add_uint(tree, hf_gtp_tlli, tvb, offset, 5, tlli); + + return 5; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.5, page 39 + * UMTS: 29.060 v4.0, chapter 7.7.5, page 47 + */ +static int +decode_gtp_ptmsi(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint32 ptmsi; + + ptmsi = tvb_get_ntohl (tvb, offset+1); + proto_tree_add_uint (tree, hf_gtp_ptmsi, tvb, offset, 5, ptmsi); + + return 5; +} + +/* adjust - how many bytes before offset should be highlighted + */ +static int +decode_qos_gprs(tvbuff_t *tvb, int offset, proto_tree *tree, gchar* qos_str, guint8 adjust) { + + guint8 spare1, delay, reliability, peak, spare2, precedence, spare3, mean; + proto_tree *ext_tree_qos; + proto_item *te; + + spare1 = tvb_get_guint8(tvb, offset) & 0xC0; + delay = tvb_get_guint8(tvb, offset) & 0x38; + reliability = tvb_get_guint8(tvb, offset) & 0x07; + peak = tvb_get_guint8(tvb, offset+1) & 0xF0; + spare2 = tvb_get_guint8(tvb, offset+1) & 0x08; + precedence = tvb_get_guint8(tvb, offset+1) & 0x07; + spare3 = tvb_get_guint8(tvb, offset+2) & 0xE0; + mean = tvb_get_guint8(tvb, offset+2) & 0x1F; + + te = proto_tree_add_text(tree, tvb, offset-adjust, 3+adjust, "%s: delay: %u, reliability: %u, peak: %u, precedence: %u, mean: %u", + qos_str, (delay >> 3) & 0x07, reliability, (peak >> 4) & 0x0F, precedence, mean); + ext_tree_qos = proto_item_add_subtree(te, ett_gtp_qos); + + if (adjust != 0) { + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_spare1, tvb, offset, 1, spare1); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_delay, tvb, offset, 1, delay); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_reliability, tvb, offset, 1, reliability); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_peak, tvb, offset+1, 1, peak); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_spare2, tvb, offset+1, 1, spare2); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_precedence, tvb, offset+1, 1, precedence); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_spare3, tvb, offset+2, 1, spare3); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_mean, tvb, offset+2, 1, mean); + } + + return 3; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.6, page 39 + * 4.08 + * 3.60 + * UMTS: not present + * TODO: check if length is included: ETSI 4.08 vs 9.60 + */ +static int +decode_gtp_qos_gprs(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + return (1+decode_qos_gprs(tvb, offset+1, tree, "Quality of Service", 1)); + +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.7, page 39 + * UMTS: 29.060 v4.0, chapter 7.7.6, page 47 + */ +static int +decode_gtp_reorder(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint8 reorder; + + reorder = tvb_get_guint8(tvb, offset+1) & 0x01; + proto_tree_add_boolean(tree, hf_gtp_reorder, tvb, offset, 2, reorder); + + return 2; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.8, page 40 + * 4.08 v7.1.2, chapter 10.5.3.1+ + * UMTS: 29.060 v4.0, chapter 7.7.7 + * TODO: Add blurb support by registering items in the protocol registration + */ +static int +decode_gtp_auth_tri(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + proto_tree *ext_tree_auth_tri; + proto_item *te; + + te = proto_tree_add_text(tree, tvb, offset, 29, val_to_str(GTP_EXT_AUTH_TRI, gtp_val, "Unknown message")); + ext_tree_auth_tri = proto_item_add_subtree(tree, ett_gtp_auth_tri); + + proto_tree_add_text(ext_tree_auth_tri, tvb, offset+1, 16, "RAND: %s", tvb_bytes_to_str(tvb, offset+1, 16)); + proto_tree_add_text(ext_tree_auth_tri, tvb, offset+17, 4, "SRES: %s", tvb_bytes_to_str(tvb, offset+17, 4)); + proto_tree_add_text(ext_tree_auth_tri, tvb, offset+21, 8, "Kc: %s", tvb_bytes_to_str(tvb, offset+21, 8)); + + return 1+16+4+8; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.9, page 40 + * 9.02 v7.7.0, page 1090 + * UMTS: 29.060 v4.0, chapter 7.7.8, page 48 + * 29.002 v4.2.1, chapter 17.5, page 268 + */ +static int +decode_gtp_map_cause(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint8 map_cause; + + map_cause = tvb_get_guint8(tvb, offset+1); + proto_tree_add_uint (tree, hf_gtp_map_cause, tvb, offset, 2, map_cause); + + return 2; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.10, page 41 + * UMTS: 29.060 v4.0, chapter 7.7.9, page 48 + */ +static int +decode_gtp_ptmsi_sig(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint32 ptmsi_sig; + + ptmsi_sig = tvb_get_ntoh24(tvb, offset+1); + proto_tree_add_uint(tree, hf_gtp_ptmsi_sig, tvb, offset, 4, ptmsi_sig); + + return 4; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.11, page 41 + * UMTS: 29.060 v4.0, chapter 7.7.10, page 49 + */ +static int +decode_gtp_ms_valid(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint8 ms_valid; + + ms_valid = tvb_get_guint8(tvb, offset+1) & 0x01; + proto_tree_add_boolean (tree, hf_gtp_ms_valid, tvb, offset, 2, ms_valid); + + return 2; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.12, page 41 + * UMTS: 29.060 v4.0, chapter 7.7.11, page 49 + */ +static int +decode_gtp_recovery(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint8 recovery; + + recovery = tvb_get_guint8(tvb, offset+1); + proto_tree_add_uint (tree, hf_gtp_recovery, tvb, offset, 2, recovery); + + return 2; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.13, page 42 + * UMTS: 29.060 v4.0, chapter 7.7.12, page 49 + */ +static int +decode_gtp_sel_mode(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint8 sel_mode; + + sel_mode = tvb_get_guint8(tvb, offset+1) & 0x03; + proto_tree_add_uint(tree, hf_gtp_sel_mode, tvb, offset, 2, sel_mode); + + return 2; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.14, page 42 + * UMTS: 29.060 v4.0, chapter 7.7.13, page 50 + */ +static int +decode_gtp_16(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 ext_flow_label; + guint32 teid_data; + + switch (gtp_version) { + case 0: + ext_flow_label = tvb_get_ntohs(tvb, offset+1); + proto_tree_add_uint(tree, hf_gtp_ext_flow_label, tvb, offset, 3, ext_flow_label); + + return 3; + case 1: + teid_data = tvb_get_ntohl(tvb, offset+1); + proto_tree_add_uint(tree, hf_gtp_teid_data, tvb, offset, 5, teid_data); + + return 5; + default: + proto_tree_add_text(tree, tvb, offset, 1, "Flow label/TEID Data I : GTP version not supported"); + + return 3; + } +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.15, page 42 + * UMTS: 29.060 v4.0, chapter 7.7.14, page 42 + */ +static int +decode_gtp_17(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 flow_sig; + guint32 teid_cp; + + switch (gtp_version) { + case 0: + flow_sig = tvb_get_ntohs(tvb, offset+1); + proto_tree_add_uint (tree, hf_gtp_flow_sig, tvb, offset, 3, flow_sig); + return 3; + case 1: + teid_cp = tvb_get_ntohl(tvb, offset+1); + proto_tree_add_uint (tree, hf_gtp_teid_cp, tvb, offset, 5, teid_cp); + return 5; + default: + proto_tree_add_text(tree, tvb, offset, 1, "Flow label signalling/TEID control plane : GTP version not supported"); + return 3; + } +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.16, page 42 + * UMTS: 29.060 v4.0, chapter 7.7.15, page 51 + */ +static int +decode_gtp_18(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 flow_ii; + guint32 teid_ii; + proto_tree *ext_tree_flow_ii; + proto_item *te; + + switch (gtp_version) { + case 0: + te = proto_tree_add_text(tree, tvb, offset, 4, val_to_str(GTP_EXT_FLOW_II, gtp_val, "Unknown message")); + ext_tree_flow_ii = proto_item_add_subtree (te, ett_gtp_flow_ii); + + proto_tree_add_uint(ext_tree_flow_ii, hf_gtp_nsapi, tvb, offset+1, 1, tvb_get_guint8(tvb, offset+1) & 0x0F); + + flow_ii = tvb_get_ntohs(tvb, offset+2); + proto_tree_add_uint(ext_tree_flow_ii, hf_gtp_flow_ii, tvb, offset+2, 2, flow_ii); + + return 4; + case 1: + te = proto_tree_add_text (tree, tvb, offset, 6, val_to_str(GTP_EXT_TEID_II, gtp_val, "Unknown message")); + ext_tree_flow_ii = proto_item_add_subtree(te, ett_gtp_flow_ii); + + proto_tree_add_uint(ext_tree_flow_ii, hf_gtp_nsapi, tvb, offset+1, 1, tvb_get_guint8(tvb, offset+1) & 0x0F); + + + teid_ii = tvb_get_ntohl(tvb, offset+2); + proto_tree_add_uint(ext_tree_flow_ii, hf_gtp_teid_ii, tvb, offset+2, 4, teid_ii); + + return 6; + default: + proto_tree_add_text(tree, tvb, offset, 1, "Flow data II/TEID Data II : GTP Version not supported"); + + return 4; + } +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.16A, page 43 + * UMTS: 29.060 v4.0, chapter 7.7.16, page 51 + * Check if all ms_reason types are included + */ +static int +decode_gtp_19(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint8 field19; + + field19 = tvb_get_guint8(tvb, offset+1); + + switch (gtp_version) { + case 0: + proto_tree_add_uint(tree, hf_gtp_ms_reason, tvb, offset, 2, field19); + break; + case 1: + proto_tree_add_boolean(tree, hf_gtp_tear_ind, tvb, offset, 2, field19 & 0x01); + break; + default: + proto_tree_add_text(tree, tvb, offset, 1, "Information Element Type = 19 : GTP Version not supported"); + break; + } + + return 2; +} + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.17, page 51 + */ +static int +decode_gtp_nsapi(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint8 nsapi; + + nsapi = tvb_get_guint8(tvb, offset+1) & 0x0F; + proto_tree_add_uint(tree, hf_gtp_nsapi, tvb, offset, 2, nsapi); + + return 2; +} + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.18, page 52 + */ +static int +decode_gtp_ranap_cause(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint8 ranap; + + ranap = tvb_get_guint8(tvb, offset+1); + + if(ranap > 0 && ranap <=64) + proto_tree_add_uint_format(tree, hf_gtp_ranap_cause, tvb, offset, 2, + ranap, "%s (Radio Network Layer Cause) : %s (%u)", + val_to_str(GTP_EXT_RANAP_CAUSE, gtp_val, "Unknown"), + val_to_str(ranap, ranap_cause_type, "Unknown RANAP Cause"), ranap); + + if(ranap > 64 && ranap <=80) + proto_tree_add_uint_format(tree, hf_gtp_ranap_cause, tvb, offset, 2, + ranap, "%s (Transport Layer Cause) : %s (%u)", + val_to_str(GTP_EXT_RANAP_CAUSE, gtp_val, "Unknown"), + val_to_str(ranap, ranap_cause_type, "Unknown RANAP Cause"), ranap); + + if(ranap > 80 && ranap <=96) + proto_tree_add_uint_format(tree, hf_gtp_ranap_cause, tvb, offset, 2, + ranap, "%s (NAS Cause) : %s (%u)", + val_to_str(GTP_EXT_RANAP_CAUSE, gtp_val, "Unknown"), + val_to_str(ranap, ranap_cause_type, "Unknown RANAP Cause"), ranap); + + if(ranap > 96 && ranap <=112) + proto_tree_add_uint_format(tree, hf_gtp_ranap_cause, tvb, offset, 2, ranap, + "%s (Protocol Cause) : %s (%u)", + val_to_str(GTP_EXT_RANAP_CAUSE, gtp_val, "Unknown"), + val_to_str(ranap, ranap_cause_type, "Unknown RANAP Cause"), ranap); + + if(ranap > 112 && ranap <=128) + proto_tree_add_uint_format(tree, hf_gtp_ranap_cause, tvb, offset, 2, ranap, + "%s (Miscellaneous Cause) : %s (%u)", + val_to_str(GTP_EXT_RANAP_CAUSE, gtp_val, "Unknown"), + val_to_str(ranap, ranap_cause_type, "Unknown RANAP Cause"), ranap); + + if(ranap > 128 /* && ranap <=255 */) + proto_tree_add_uint_format(tree, hf_gtp_ranap_cause, tvb, offset, 2, ranap, + "%s (Non-standard Cause) : %s (%u)", + val_to_str(GTP_EXT_RANAP_CAUSE, gtp_val, "Unknown"), + val_to_str(ranap, ranap_cause_type, "Unknown RANAP Cause"), ranap); + + return 2; +} + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.19, page 52 + */ +static int +decode_gtp_rab_cntxt(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint8 nsapi, dl_pdcp_seq, ul_pdcp_seq; + guint16 dl_gtpu_seq, ul_gtpu_seq; + proto_tree *ext_tree_rab_cntxt; + proto_item *te; + + te = proto_tree_add_text(tree, tvb, offset, 8, val_to_str(GTP_EXT_RAB_CNTXT, gtp_val, "Unknown message")); + ext_tree_rab_cntxt = proto_item_add_subtree(te, ett_gtp_rab_cntxt); + + nsapi = tvb_get_guint8(tvb, offset+1) & 0x0F; + dl_gtpu_seq = tvb_get_ntohs(tvb, offset+2); + ul_gtpu_seq = tvb_get_ntohs(tvb, offset+4); + dl_pdcp_seq = tvb_get_guint8(tvb, offset+6); + ul_pdcp_seq = tvb_get_guint8(tvb, offset+7); + + proto_tree_add_uint (ext_tree_rab_cntxt, hf_gtp_nsapi, tvb, offset+1, 1, nsapi); + proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtp_rab_gtpu_dn, tvb, offset+2, 2, dl_gtpu_seq); + proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtp_rab_gtpu_up, tvb, offset+4, 2, ul_gtpu_seq); + proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtp_rab_pdu_dn, tvb, offset+6, 1, dl_pdcp_seq); + proto_tree_add_uint(ext_tree_rab_cntxt, hf_gtp_rab_pdu_up, tvb, offset+7, 1, ul_pdcp_seq); + + return 8; +} + + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.20, page 53 + */ +static int +decode_gtp_rp_sms(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint8 rp_sms; + + rp_sms = tvb_get_guint8(tvb, offset+1) & 0x07; + proto_tree_add_uint(tree, hf_gtp_rp_sms, tvb, offset, 2, rp_sms); + + return 2; +} + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.21, page 53 + */ +static int +decode_gtp_rp(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + proto_tree *ext_tree_rp; + proto_item *te; + guint8 nsapi, rp, spare; + + nsapi = tvb_get_guint8(tvb, offset+1) & 0xF0; + spare = tvb_get_guint8(tvb, offset+1) & 0x08; + rp = tvb_get_guint8(tvb, offset+1) & 0x07; + + te = proto_tree_add_uint_format(tree, hf_gtp_rp, tvb, offset, 2, rp, "Radio Priority for NSAPI(%u) : %u", nsapi, rp); + ext_tree_rp = proto_item_add_subtree(tree, ett_gtp_rp); + + proto_tree_add_uint(ext_tree_rp, hf_gtp_rp_nsapi, tvb, offset+1, 1, nsapi); + proto_tree_add_uint(ext_tree_rp, hf_gtp_rp_spare, tvb, offset+1, 1, spare); + proto_tree_add_uint(ext_tree_rp, hf_gtp_rp, tvb, offset+1, 1, rp); + + return 2; +} + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.22, page 53 + */ +static int +decode_gtp_pkt_flow_id(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + proto_tree *ext_tree_pkt_flow_id; + proto_item *te; + guint8 nsapi, pkt_flow_id; + + nsapi = tvb_get_guint8(tvb, offset+1) & 0x0F; + pkt_flow_id = tvb_get_guint8(tvb, offset+2); + + te = proto_tree_add_uint_format (tree, hf_gtp_pkt_flow_id, tvb, offset, + 3, pkt_flow_id, "Packet Flow ID for NSAPI(%u) : %u", nsapi, + pkt_flow_id); + ext_tree_pkt_flow_id = proto_item_add_subtree(tree, ett_gtp_pkt_flow_id); + + proto_tree_add_uint(ext_tree_pkt_flow_id, hf_gtp_nsapi, tvb, offset+1, 1, nsapi); + proto_tree_add_uint_format(ext_tree_pkt_flow_id, hf_gtp_pkt_flow_id, tvb, + offset+2, 1, pkt_flow_id, "%s : %u", + val_to_str(GTP_EXT_PKT_FLOW_ID, gtp_val, "Unknown message"), + pkt_flow_id); + + return 3; +} + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.23, page 53 + * TODO: Differenciate these uints? + */ +static int +decode_gtp_chrg_char(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 chrg_char; + proto_item *te; + proto_tree *ext_tree_chrg_char; + + chrg_char = tvb_get_ntohs(tvb, offset+1); + + te = proto_tree_add_uint (tree, hf_gtp_chrg_char, tvb, offset, 3, chrg_char); + /*"%s: %x", val_to_str (GTP_EXT_CHRG_CHAR, gtp_val, "Unknown message"), chrg_char);*/ + ext_tree_chrg_char = proto_item_add_subtree(te, ett_gtp_chrg_char); + + proto_tree_add_uint (ext_tree_chrg_char, hf_gtp_chrg_char_s, tvb, offset+1, 2, chrg_char); + proto_tree_add_uint (ext_tree_chrg_char, hf_gtp_chrg_char_n, tvb, offset+1, 2, chrg_char); + proto_tree_add_uint (ext_tree_chrg_char, hf_gtp_chrg_char_p, tvb, offset+1, 2, chrg_char); + proto_tree_add_uint (ext_tree_chrg_char, hf_gtp_chrg_char_f, tvb, offset+1, 2, chrg_char); + proto_tree_add_uint (ext_tree_chrg_char, hf_gtp_chrg_char_h, tvb, offset+1, 2, chrg_char); + proto_tree_add_uint (ext_tree_chrg_char, hf_gtp_chrg_char_r, tvb, offset+1, 2, chrg_char); + + return 3; +} + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.24, page + */ +static int +decode_gtp_trace_ref(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 trace_ref; + + trace_ref = tvb_get_ntohs(tvb, offset+1); + + proto_tree_add_uint (tree, hf_gtp_trace_ref, tvb, offset, 3, trace_ref); + + return 3; +} + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.25, page + */ +static int +decode_gtp_trace_type(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 trace_type; + + trace_type = tvb_get_ntohs(tvb, offset+1); + + proto_tree_add_uint (tree, hf_gtp_trace_type, tvb, offset, 3, trace_type); + + return 3; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.16A + * UMTS: 29.060 v4.0, chapter 7.7.25A, page + */ +static int +decode_gtp_ms_reason(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint8 reason; + + reason = tvb_get_guint8(tvb, offset+1); + + proto_tree_add_uint (tree, hf_gtp_ms_reason, tvb, offset, 2, reason); + + return 2; +} + + +/* GPRS: 12.15 v7.6.0, chapter 7.3.3, page 45 + * UMTS: 33.015 + */ +static int +decode_gtp_tr_comm(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint8 tr_command; + + tr_command = tvb_get_guint8(tvb, offset+1); + + proto_tree_add_uint (tree, hf_gtp_tr_comm, tvb, offset, 2, tr_command); + + return 2; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.17, page 43 + * UMTS: 29.060 v4.0, chapter 7.7.26, page 55 + */ +static int +decode_gtp_chrg_id(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint32 chrg_id; + + chrg_id = tvb_get_ntohl(tvb, offset+1); + proto_tree_add_uint (tree, hf_gtp_chrg_id, tvb, offset, 5, chrg_id); + + return 5; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.18, page 43 + * UMTS: 29.060 v4.0, chapter 7.7.27, page 55 + */ +static int +decode_gtp_user_addr(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 length; + guint8 pdp_typ, pdp_org; + guint32 addr_ipv4; + struct e_in6_addr addr_ipv6; + proto_tree *ext_tree_user; + proto_item *te; + + + length = tvb_get_ntohs(tvb, offset+1); + pdp_org = tvb_get_guint8(tvb, offset+3) & 0x0F; + pdp_typ = tvb_get_guint8(tvb, offset+4); + + te = proto_tree_add_text(tree, tvb, offset, 3+length, "%s (%s/%s)", + val_to_str(GTP_EXT_USER_ADDR, gtp_val, "Unknown message"), + val_to_str(pdp_org, pdp_org_type, "Unknown PDP Organization"), + val_to_str(pdp_typ, pdp_type, "Unknown PDP Type")); + ext_tree_user = proto_item_add_subtree(te, ett_gtp_user); + + proto_tree_add_text(ext_tree_user, tvb, offset+1, 2, "Length : %u", length); + proto_tree_add_uint(ext_tree_user, hf_gtp_user_addr_pdp_org, tvb, offset+3, 1, pdp_org); + proto_tree_add_uint(ext_tree_user, hf_gtp_user_addr_pdp_type, tvb, offset+4, 1, pdp_typ); + + if (length == 2) { + if (pdp_org == 0 && pdp_typ == 1) + proto_item_append_text(te, " (Point to Point Protocol)"); + else if (pdp_typ == 2) + proto_item_append_text(te, " (Octet Stream Protocol)"); + } else if (length > 2) { + switch (pdp_typ) { + case 0x21: + tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+5, sizeof addr_ipv4); + proto_tree_add_ipv4(ext_tree_user, hf_gtp_user_ipv4, tvb, offset+5, 4, addr_ipv4); + proto_item_append_text(te, " : %s", ip_to_str((guint8 *)&addr_ipv4)); + break; + case 0x57: + tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+5, sizeof addr_ipv6); + proto_tree_add_ipv6 (ext_tree_user, hf_gtp_user_ipv6, tvb, offset+5, 16, (guint8 *)&addr_ipv6); + proto_item_append_text(te, " : %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6)); + break; + } + } else + proto_item_append_text(te, " : empty PDP Address"); + + return 3+length; +} + +static int +decode_triplet(tvbuff_t *tvb, int offset, proto_tree *tree, guint16 count) { + + proto_tree *ext_tree_trip; + proto_item *te_trip; + guint16 i; + + for (i=0;i<count;i++) { + te_trip = proto_tree_add_text(tree, tvb, offset+i*28, 28, "Triplet no%x", i); + ext_tree_trip = proto_item_add_subtree(te_trip, ett_gtp_trip); + + proto_tree_add_text(ext_tree_trip, tvb, offset+i*28, 16, "RAND: %s", tvb_bytes_to_str(tvb, offset+i*28, 16)); + proto_tree_add_text(ext_tree_trip, tvb, offset+i*28+16, 4, "SRES: %s", tvb_bytes_to_str(tvb, offset+i*28+16, 4)); + proto_tree_add_text(ext_tree_trip, tvb, offset+i*28+20, 8, "Kc: %s", tvb_bytes_to_str(tvb, offset+i*28+20, 8)); + } + + return count*28; +} + +/* adjust - how many bytes before quintuplet should be highlighted + */ +static int +decode_quintuplet(tvbuff_t *tvb, int offset, proto_tree *tree, guint16 count, guint8 adjust) { + + proto_tree *ext_tree_quint; + proto_item *te_quint; + guint16 q_len, xres_len, auth_len, q_offset, i; + + q_offset = 0; + + for (i=0;i<count;i++) { + + offset = offset + q_offset; + + q_len = tvb_get_ntohs(tvb, offset); + + te_quint = proto_tree_add_text(tree, tvb, offset-adjust, q_len+adjust, "Quintuplet #%x", i); + ext_tree_quint = proto_item_add_subtree(te_quint, ett_gtp_quint); + + proto_tree_add_text(ext_tree_quint, tvb, offset, 2, "Length: %x", q_len); + proto_tree_add_text(ext_tree_quint, tvb, offset+2, 16, "RAND: %s", tvb_bytes_to_str(tvb, offset+2, 16)); + xres_len = tvb_get_ntohs(tvb, offset+18); + proto_tree_add_text(ext_tree_quint, tvb, offset+18, 2, "XRES length: %u", xres_len); + proto_tree_add_text(ext_tree_quint, tvb, offset+20, xres_len, "XRES: %s", tvb_bytes_to_str(tvb, offset+20, xres_len)); + proto_tree_add_text(ext_tree_quint, tvb, offset+20+xres_len, 16, "Quintuplet ciphering key: %s", tvb_bytes_to_str(tvb, offset+20+xres_len, 16)); + proto_tree_add_text(ext_tree_quint, tvb, offset+36+xres_len, 16, "Quintuplet integrity key: %s", tvb_bytes_to_str(tvb, offset+36+xres_len, 16)); + auth_len = tvb_get_ntohs(tvb, offset+52+xres_len); + proto_tree_add_text(ext_tree_quint, tvb, offset+52+xres_len, 2, "Authentication length: %u", auth_len); + proto_tree_add_text(ext_tree_quint, tvb, offset+54+xres_len, auth_len, "AUTH: %s", tvb_bytes_to_str(tvb, offset+54+xres_len, auth_len)); + + q_offset = q_offset + q_len + 2; + } + + return q_offset; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.19 page + * UMTS: 29.060 v4.0, chapter 7.7.28 page 57 + * TODO: - check if for quintuplets first 2 bytes are length, according to AuthQuint + * - finish displaying last 3 parameters + */ +static int +decode_gtp_mm_cntxt(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 length, quint_len, net_cap, con_len; + guint8 cksn, count, sec_mode, cipher, trans_id, proto_disc, message, drx_split, drx_len, drx_ccch, non_drx_timer; + proto_tree *ext_tree_mm; + proto_item *te; + + te = proto_tree_add_text(tree, tvb, offset, 1, val_to_str(GTP_EXT_MM_CNTXT, gtp_val, "Unknown message")); + ext_tree_mm = proto_item_add_subtree(te, ett_gtp_mm); + + length = tvb_get_ntohs(tvb, offset+1); + if (length < 1) return 3; + + cksn = tvb_get_guint8(tvb, offset+3) & 0x07; + sec_mode = (tvb_get_guint8(tvb, offset+4) >> 6) & 0x03; + count = (tvb_get_guint8(tvb, offset+4) >> 3) & 0x07; + cipher = tvb_get_guint8(tvb, offset+4) & 0x07; + + proto_tree_add_text(ext_tree_mm, tvb, offset+1, 2, "Length: %x", length); + proto_tree_add_text(ext_tree_mm, tvb, offset+3, 1, "Ciphering Key Sequence Number: %u", cksn); + if (gtp_version != 0) { + proto_tree_add_text(ext_tree_mm, tvb, offset+3, 1, "Security type: %u (%s)", sec_mode, + val_to_str(sec_mode, mm_sec_modep, "Unknown")); + } else { + sec_mode = 1; + } + + proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "No of triplets: %u", count); + + switch (sec_mode) { + case 0: + if (cipher == 0) { + proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: no ciphering"); + } else { + proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: GEA/%u", cipher); + } + proto_tree_add_text(ext_tree_mm, tvb, offset+5, 16, "Ciphering key CK: %s", tvb_bytes_to_str(tvb, offset+5, 16)); + proto_tree_add_text(ext_tree_mm, tvb, offset+21, 16, "Integrity key CK: %s", tvb_bytes_to_str(tvb, offset+21, 16)); + quint_len = tvb_get_ntohs(tvb, offset+37); + proto_tree_add_text(ext_tree_mm, tvb, offset+37, 2, "Quintuplets length: %x", quint_len); + + offset = offset + decode_quintuplet(tvb, offset+39, ext_tree_mm, count, 0) + 39; + + + break; + case 1: + if (cipher == 0) { + proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: no ciphering"); + } else { + proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: GEA/%u", cipher); + } + proto_tree_add_text(ext_tree_mm, tvb, offset+5, 8, "Ciphering key Kc: %s", tvb_bytes_to_str(tvb, offset+5, 8)); + + offset = offset + decode_triplet(tvb, offset+13, ext_tree_mm, count) + 13; + + break; + case 2: + proto_tree_add_text(ext_tree_mm, tvb, offset+5, 16, "Ciphering key CK: %s", tvb_bytes_to_str(tvb, offset+5, 16)); + proto_tree_add_text(ext_tree_mm, tvb, offset+21, 16, "Integrity key CK: %s", tvb_bytes_to_str(tvb, offset+21, 16)); + quint_len = tvb_get_ntohs(tvb, offset+37); + proto_tree_add_text(ext_tree_mm, tvb, offset+37, 2, "Quintuplets length: %x", quint_len); + + offset = offset + decode_quintuplet(tvb, offset+39, ext_tree_mm, count, 0) + 39; + + break; + case 3: + if (cipher == 0) { + proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: no ciphering"); + } else { + proto_tree_add_text(ext_tree_mm, tvb, offset+4, 1, "Ciphering: GEA/%u", cipher); + } + proto_tree_add_text(ext_tree_mm, tvb, offset+5, 8, "Ciphering key Kc: %s", tvb_bytes_to_str(tvb, offset+5, 8)); + quint_len = tvb_get_ntohs(tvb, offset+13); + proto_tree_add_text(ext_tree_mm, tvb, offset+13, 2, "Quintuplets length: %x", quint_len); + + offset = offset + decode_quintuplet(tvb, offset+15, ext_tree_mm, count, 0) + 15; + + break; + default: + break; + } + + + drx_split = tvb_get_guint8(tvb, offset); + drx_len = (tvb_get_guint8(tvb, offset+1) >> 4) & 0x0F; + drx_ccch = (tvb_get_guint8(tvb, offset+1) >> 3) & 0x01; + non_drx_timer = tvb_get_guint8(tvb, offset+1) & 0x07; + + net_cap = tvb_get_ntohs(tvb, offset+2); + con_len = tvb_get_ntohs(tvb, offset+4); + + proto_tree_add_text(ext_tree_mm, tvb, offset, 1, "DRX: split PG cycle code: %u", drx_split); + proto_tree_add_text(ext_tree_mm, tvb, offset+1, 1, "DRX: CN specific DRX cycle length coefficient: %u", drx_len); + proto_tree_add_text(ext_tree_mm, tvb, offset+1, 1, "DRX: split PG cycle on CCCH supported by MS: %s", yesno[drx_ccch]); + if (non_drx_timer == 0) { + proto_tree_add_text(ext_tree_mm, tvb, offset+1, 1, "DRX: no non-DRX mode after transfer state"); + } else { + proto_tree_add_text(ext_tree_mm, tvb, offset+1, 1, "DRX: max sec non-DRX mode after transfer state: 2^%u", non_drx_timer-1); + } + + proto_tree_add_text(ext_tree_mm, tvb, offset+2, 2, "MS network capability: %u", net_cap); + proto_tree_add_text(ext_tree_mm, tvb, offset+4, 2, "Container length: %u", con_len); + + if (con_len > 0) { + trans_id = (tvb_get_guint8(tvb, offset+6) >> 4) & 0x0F; + proto_tree_add_text(ext_tree_mm, tvb, offset+6, 1, "Transaction identifier: 0x%x", trans_id); + proto_disc = tvb_get_guint8(tvb, offset+6) & 0x0F; + proto_tree_add_text(ext_tree_mm, tvb, offset+6, 1, "Protocol discriminator: 0x%x (%s)", proto_disc, + val_to_str(proto_disc, mm_proto_disc, "Unknown")); + message = tvb_get_guint8(tvb, offset+7); + switch (message) { + + case MM_PROTO_RR_MGMT: + proto_tree_add_text(ext_tree_mm, tvb, offset+7, 1, "Message type: 0x%02x (%s)", message, + val_to_str(message, mm_rr_mess, "Unknown")); + break; + + case MM_PROTO_MM_NON_GPRS: + proto_tree_add_text(ext_tree_mm, tvb, offset+7, 1, "Message type: 0x%02x (%s)", message, + val_to_str(message, mm_mm_mess, "Unknown")); + break; + + case MM_PROTO_CALL_CONTROL: + case MM_PROTO_GROUP_CALL_CONTROL: + case MM_PROTO_BROADCAST_CALL_CONTROL: + proto_tree_add_text(ext_tree_mm, tvb, offset+7, 1, "Message type: 0x%02x (%s)", message, + val_to_str(message, mm_cc_mess, "Unknown")); + break; + + case MM_PROTO_MM_GPRS: + proto_tree_add_text(ext_tree_mm, tvb, offset+7, 1, "Message type: 0x%02x (%s)", message, + val_to_str(message, mm_gprs_mess, "Unknown")); + break; + + default: + proto_tree_add_text(ext_tree_mm, tvb, offset+7, 1, "Message type: 0x%02x", message); + break; + } + /* XXX - dissect additional IEs from GSM L3 message */ + } + + return 3+length; +} + +/* Function to extract the value of an hexadecimal octet. Only the lower + * nybble will be non-zero in the output. + * */ +static guint8 hex2dec (guint8 x) +{ + if ((x >= 'a') && (x <= 'f')) + x = x - 'a' + 10; + else if ((x >= 'A') && (x <= 'F')) + x = x - 'A' + 10; + else if ((x >= '0') && (x <= '9')) + x = x - '0'; + else + x = 0; + return x; +} + +/* Wrapper function to add UTF-8 decoding for QoS attributes in + * RADIUS messages. + * */ +static guint8 wrapped_tvb_get_guint8( tvbuff_t *tvb, int offset, int type) +{ + if (type == 2) + return (hex2dec(tvb_get_guint8(tvb, offset)) << 4 + | hex2dec(tvb_get_guint8(tvb, offset + 1))); + else + return tvb_get_guint8(tvb, offset); +} + + /* WARNING : actually length is coded on 2 octets for QoS profile but on 1 octet for PDP Context! + * so type means length of length :-) + * + * WARNING :) type does not mean length of length any more... see below for + * type = 3! + */ +int +decode_qos_umts(tvbuff_t *tvb, int offset, proto_tree *tree, gchar* qos_str, guint8 type) { + + guint length; + guint8 al_ret_priority; + guint8 delay, reliability, peak, precedence, mean, spare1, spare2, spare3; + guint8 traf_class, del_order, del_err_sdu; + guint8 max_sdu_size, max_ul, max_dl; + guint8 res_ber, sdu_err_ratio; + guint8 trans_delay, traf_handl_prio; + guint8 guar_ul, guar_dl; + proto_tree *ext_tree_qos; + proto_item *te; + int mss, mu, md, gu, gd; + + /* Will keep if the input is UTF-8 encoded (as in RADIUS messages). + * If 1, input is *not* UTF-8 encoded (i.e. each input octet corresponds + * to one byte to be dissected). + * If 2, input is UTF-8 encoded (i.e. each *couple* of input octets + * corresponds to one byte to be dissected) + * */ + guint8 utf8_type = 1; + + /* In RADIUS messages the QoS has a version field of two octets prepended. + * As of 29.061 v.3.a.0, there is an hyphen between "Release Indicator" and + * <release specific QoS IE UTF-8 encoding>. Even if it sounds rather + * inconsistent and unuseful, I will check hyphen presence here and + * will signal its presence. + * */ + guint8 version_buffer[2]; + guint8 hyphen; + + /* Will keep the value that will be returned + * */ + int retval = 0; + + switch (type) { + case 1: + length = tvb_get_guint8 (tvb, offset); + te = proto_tree_add_text (tree, tvb, offset, length + 1, "%s", qos_str); + ext_tree_qos = proto_item_add_subtree (te, ett_gtp_qos); + proto_tree_add_text (ext_tree_qos, tvb, offset, 1, "Length: %u", length); + offset++; + retval = length + 1; + break; + case 2: + length = tvb_get_ntohs (tvb, offset + 1); + te = proto_tree_add_text(tree, tvb, offset, length + 3, "%s", qos_str); + ext_tree_qos = proto_item_add_subtree (te, ett_gtp_qos); + proto_tree_add_text (ext_tree_qos, tvb, offset + 1, 2, "Length: %u", length); + offset += 3; /* +1 because of first 0x86 byte for UMTS QoS */ + retval = length + 3; + break; + case 3: + /* For QoS inside RADIUS Client messages from GGSN */ + utf8_type = 2; + + /* The field in the RADIUS message starts one byte before :) */ + length = tvb_get_guint8 (tvb, offset); + te = proto_tree_add_text (tree, tvb, offset - 1, length, "%s", qos_str); + + ext_tree_qos = proto_item_add_subtree (te, ett_gtp_qos); + version_buffer[0] = tvb_get_guint8(tvb, offset + 1); + version_buffer[1] = tvb_get_guint8(tvb, offset + 2); + proto_tree_add_text (ext_tree_qos, tvb, offset + 1, 2, "Version: %c%c", version_buffer[0], version_buffer[1]); + + /* Hyphen handling */ + hyphen = tvb_get_guint8(tvb, offset + 3); + if (hyphen == ((guint8) '-')) + { + /* Hyphen is present, put in protocol tree */ + proto_tree_add_text (ext_tree_qos, tvb, offset + 3, 1, "Hyphen separator: -"); + offset++; /* "Get rid" of hyphen */ + } + + /* Now, we modify offset here and in order to use type later + * effectively.*/ + offset += 2; + retval = length + 3; /* Actually, will be ignored. */ + break; + default: + /* XXX - what should we do with the length here? */ + length = 0; + retval = 0; + ext_tree_qos = NULL; + break; + } + + /* In RADIUS messages there is no allocation-retention priority + * so I don't need to wrap the following call to tvb_get_guint8 + * */ + al_ret_priority = tvb_get_guint8 (tvb, offset); + + /* All calls are wrapped to take into account the possibility that the + * input is UTF-8 encoded. If utf8_type is equal to 1, the final value + * of the offset will be the same as in the previous version of this + * dissector, and the wrapped function will serve as a dumb wrapper; + * otherwise, if utf_8_type is 2, the offset is correctly shifted by + * two bytes for needed shift, and the wrapped function will unencode + * two values from the input. + * */ + spare1 = wrapped_tvb_get_guint8(tvb, offset+(1 - 1) * utf8_type + 1, utf8_type) & 0xC0; + delay = wrapped_tvb_get_guint8(tvb, offset+(1 - 1) * utf8_type + 1, utf8_type) & 0x38; + reliability = wrapped_tvb_get_guint8(tvb, offset+(1 - 1) * utf8_type + 1, utf8_type) & 0x07; + peak = wrapped_tvb_get_guint8(tvb, offset+(2 - 1) * utf8_type + 1, utf8_type) & 0xF0; + spare2 = wrapped_tvb_get_guint8(tvb, offset+(2 - 1) * utf8_type + 1, utf8_type) & 0x08; + precedence = wrapped_tvb_get_guint8(tvb, offset+(2 - 1) * utf8_type + 1, utf8_type) & 0x07; + spare3 = wrapped_tvb_get_guint8(tvb, offset+(3 - 1) * utf8_type + 1, utf8_type) & 0xE0; + mean = wrapped_tvb_get_guint8(tvb, offset+(3 - 1) * utf8_type + 1, utf8_type) & 0x1F; + + /* In RADIUS messages there is no allocation-retention priority */ + if (type != 3) + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_al_ret_priority, tvb, offset, 1, al_ret_priority); + + /* All additions must take care of the fact that QoS fields in RADIUS + * messages are UTF-8 encoded, so we have to use the same trick as above. + * */ + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_spare1, tvb, offset+(1 - 1) * utf8_type + 1, utf8_type, spare1); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_delay, tvb, offset+(1 - 1) * utf8_type + 1, utf8_type, delay); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_reliability, tvb, offset+(1 - 1) * utf8_type + 1, utf8_type, reliability); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_peak, tvb, offset+(2 - 1) * utf8_type + 1, utf8_type, peak); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_spare2, tvb, offset+(2 - 1) * utf8_type + 1, utf8_type, spare2); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_precedence, tvb, offset+(2 - 1) * utf8_type + 1, utf8_type, precedence); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_spare3, tvb, offset+(3 - 1) * utf8_type + 1, utf8_type, spare3); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_mean, tvb, offset+(3 - 1) * utf8_type + 1, utf8_type, mean); + + if (length > 4) { + + /* See above for the need of wrapping + * */ + traf_class = wrapped_tvb_get_guint8(tvb, offset+(4 - 1) * utf8_type + 1, utf8_type) & 0xE0; + del_order = wrapped_tvb_get_guint8(tvb, offset+(4 - 1) * utf8_type + 1, utf8_type) & 0x18; + del_err_sdu = wrapped_tvb_get_guint8(tvb, offset+(4 - 1) * utf8_type + 1, utf8_type) & 0x07; + max_sdu_size = wrapped_tvb_get_guint8(tvb, offset+(5 - 1) * utf8_type + 1, utf8_type); + max_ul = wrapped_tvb_get_guint8(tvb, offset+(6 - 1) * utf8_type + 1, utf8_type); + max_dl = wrapped_tvb_get_guint8(tvb, offset+(7 - 1) * utf8_type + 1, utf8_type); + res_ber = wrapped_tvb_get_guint8(tvb, offset+(8 - 1) * utf8_type + 1, utf8_type) & 0xF0; + sdu_err_ratio = wrapped_tvb_get_guint8(tvb, offset+(8 - 1) * utf8_type + 1, utf8_type) & 0x0F; + trans_delay = wrapped_tvb_get_guint8(tvb, offset+(9 - 1) * utf8_type + 1, utf8_type) & 0xFC; + traf_handl_prio = wrapped_tvb_get_guint8(tvb, offset+(9 - 1) * utf8_type + 1, utf8_type) & 0x03; + guar_ul = wrapped_tvb_get_guint8(tvb, offset+(10 - 1) * utf8_type + 1, utf8_type); + guar_dl = wrapped_tvb_get_guint8(tvb, offset+(11 - 1) * utf8_type + 1, utf8_type); + + /* See above comments for the changes + * */ + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_traf_class, tvb, offset+(4 - 1) * utf8_type + 1, utf8_type, traf_class); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_del_order, tvb, offset+(4 - 1) * utf8_type + 1, utf8_type, del_order); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_del_err_sdu, tvb, offset+(4 - 1) * utf8_type + 1, utf8_type, del_err_sdu); + if (max_sdu_size == 0 || max_sdu_size > 150) + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_max_sdu_size, tvb, offset+(5 - 1) * utf8_type + 1, utf8_type, max_sdu_size); + if (max_sdu_size > 0 && max_sdu_size <= 150) { + mss = max_sdu_size*10; + proto_tree_add_uint_format(ext_tree_qos, hf_gtp_qos_max_sdu_size, tvb, offset+(5 - 1) * utf8_type + 1, utf8_type, mss, "Maximum SDU size : %u octets", mss); + } + + if(max_ul == 0 || max_ul == 255) + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_max_ul, tvb, offset+(6 - 1) * utf8_type + 1, utf8_type, max_ul); + if(max_ul > 0 && max_ul <= 63) + proto_tree_add_uint_format(ext_tree_qos, hf_gtp_qos_max_ul, tvb, offset+(6 - 1) * utf8_type + 1, utf8_type, max_ul, "Maximum bit rate for uplink : %u kbps", max_ul); + if(max_ul > 63 && max_ul <=127) { + mu = 64 + ( max_ul - 64 ) * 8; + proto_tree_add_uint_format(ext_tree_qos, hf_gtp_qos_max_ul, tvb, offset+(6 - 1) * utf8_type + 1, utf8_type, mu, "Maximum bit rate for uplink : %u kbps", mu); + } + + if(max_ul > 127 && max_ul <=254) { + mu = 576 + ( max_ul - 128 ) * 64; + proto_tree_add_uint_format(ext_tree_qos, hf_gtp_qos_max_ul, tvb, offset+(6 - 1) * utf8_type + 1, utf8_type, mu, "Maximum bit rate for uplink : %u kbps", mu); + } + + if(max_dl == 0 || max_dl == 255) + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_max_dl, tvb, offset+(7 - 1) * utf8_type + 1, utf8_type, max_dl); + if(max_dl > 0 && max_dl <= 63) + proto_tree_add_uint_format(ext_tree_qos, hf_gtp_qos_max_dl, tvb, offset+(7 - 1) * utf8_type + 1, utf8_type, max_dl, "Maximum bit rate for downlink : %u kbps", max_dl); + if(max_dl > 63 && max_dl <=127) { + md = 64 + ( max_dl - 64 ) * 8; + proto_tree_add_uint_format(ext_tree_qos, hf_gtp_qos_max_dl, tvb, offset+(7 - 1) * utf8_type + 1, utf8_type, md, "Maximum bit rate for downlink : %u kbps", md); + } + if(max_dl > 127 && max_dl <=254) { + md = 576 + ( max_dl - 128 ) * 64; + proto_tree_add_uint_format(ext_tree_qos, hf_gtp_qos_max_dl, tvb, offset+(7 - 1) * utf8_type + 1, utf8_type, md, "Maximum bit rate for downlink : %u kbps", md); + } + + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_res_ber, tvb, offset+(8 - 1) * utf8_type + 1, utf8_type, res_ber); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_sdu_err_ratio, tvb, offset+(8 - 1) * utf8_type + 1, utf8_type, sdu_err_ratio); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_trans_delay, tvb, offset+(9 - 1) * utf8_type + 1, utf8_type, trans_delay); + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_traf_handl_prio, tvb, offset+(9 - 1) * utf8_type + 1, utf8_type, traf_handl_prio); + + if(guar_ul == 0 || guar_ul == 255) + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_guar_ul, tvb, offset+(10 - 1) * utf8_type + 1, utf8_type, guar_ul); + if(guar_ul > 0 && guar_ul <= 63) + proto_tree_add_uint_format(ext_tree_qos, hf_gtp_qos_guar_ul, tvb, offset+(10 - 1) * utf8_type + 1, utf8_type, guar_ul, "Guaranteed bit rate for uplink : %u kbps", guar_ul); + if(guar_ul > 63 && guar_ul <=127) { + gu = 64 + ( guar_ul - 64 ) * 8; + proto_tree_add_uint_format(ext_tree_qos, hf_gtp_qos_guar_ul, tvb, offset+(10 - 1) * utf8_type + 1, utf8_type, gu, "Guaranteed bit rate for uplink : %u kbps", gu); + } + if(guar_ul > 127 && guar_ul <=254) { + gu = 576 + ( guar_ul - 128 ) * 64; + proto_tree_add_uint_format(ext_tree_qos, hf_gtp_qos_guar_ul, tvb, offset+(10 - 1) * utf8_type + 1, utf8_type, gu, "Guaranteed bit rate for uplink : %u kbps", gu); + } + + if(guar_dl == 0 || guar_dl == 255) + proto_tree_add_uint(ext_tree_qos, hf_gtp_qos_guar_dl, tvb, offset+(11 - 1) * utf8_type + 1, utf8_type, guar_dl); + if(guar_dl > 0 && guar_dl <= 63) + proto_tree_add_uint_format(ext_tree_qos, hf_gtp_qos_guar_dl, tvb, offset+(11 - 1) * utf8_type + 1, utf8_type, guar_dl, "Guaranteed bit rate for downlink : %u kbps", guar_dl); + if(guar_dl > 63 && guar_dl <=127) { + gd = 64 + ( guar_dl - 64 ) * 8; + proto_tree_add_uint_format(ext_tree_qos, hf_gtp_qos_guar_dl, tvb, offset+(11 - 1) * utf8_type + 1, utf8_type, gd, "Guaranteed bit rate for downlink : %u kbps", gd); + } + if(guar_dl > 127 && guar_dl <=254) { + gd = 576 + ( guar_dl - 128 ) * 64; + proto_tree_add_uint_format(ext_tree_qos, hf_gtp_qos_guar_dl, tvb, offset+(11 - 1) * utf8_type + 1, utf8_type, gd, "Guaranteed bit rate for downlink : %u kbps", gd); + } + + } + + return retval; +} + +static void +decode_apn(tvbuff_t *tvb, int offset, guint16 length, proto_tree *tree) { + + gchar *apn = NULL; + guint8 name_len, tmp; + + if (length > 0) { + name_len = tvb_get_guint8 (tvb, offset); + + if (name_len < 0x20) { + apn = tvb_get_string(tvb, offset + 1, length - 1); + for (;;) { + if (name_len >= length - 1) break; + tmp = name_len; + name_len = name_len + apn[tmp] + 1; + apn[tmp] = '.'; + } + } else + apn = tvb_get_string(tvb, offset, length); + + proto_tree_add_string (tree, hf_gtp_apn, tvb, offset, length, apn); + g_free(apn); + } +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.20 + * UMTS: 29.060 v4.0, chapter 7.7.29 + * TODO: unify addr functions + */ +static int +decode_gtp_pdp_cntxt(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint8 ggsn_addr_len, apn_len, trans_id, vaa, order, nsapi, sapi, pdu_send_no, pdu_rec_no, pdp_cntxt_id, + pdp_type_org, pdp_type_num, pdp_addr_len; + guint16 length, sn_down, sn_up, up_flow; + guint32 addr_ipv4, up_teid, up_teid_cp; + struct e_in6_addr addr_ipv6; + proto_tree *ext_tree_pdp; + proto_item *te; + + length = tvb_get_ntohs(tvb, offset+1); + + te = proto_tree_add_text(tree, tvb, offset, length+3, val_to_str(GTP_EXT_PDP_CNTXT, gtp_val, "Unknown message")); + ext_tree_pdp = proto_item_add_subtree(te, ett_gtp_pdp); + + vaa = (tvb_get_guint8(tvb, offset+3) >> 6) & 0x01; + order = (tvb_get_guint8(tvb, offset+3) >> 4) & 0x01; + nsapi = tvb_get_guint8(tvb, offset+3) & 0x0F; + sapi = tvb_get_guint8(tvb, offset+4) & 0x0F; + + proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 1, "VPLMN address allowed: %s", yesno[vaa]); + proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 1, "Reordering required: %s", yesno[order]); + proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 1, "NSAPI: %u", nsapi); + proto_tree_add_text(ext_tree_pdp, tvb, offset+4, 1, "SAPI: %u", sapi); + + switch (gtp_version) { + case 0: + decode_qos_gprs(tvb, offset+5, ext_tree_pdp, "QoS subscribed", 0); + decode_qos_gprs(tvb, offset+8, ext_tree_pdp, "QoS requested", 0); + decode_qos_gprs(tvb, offset+11, ext_tree_pdp, "QoS negotiated", 0); + offset = offset + 14; + break; + case 1: + offset = offset + 5; + offset = offset + decode_qos_umts(tvb, offset, ext_tree_pdp, "QoS subscribed", 1); + offset = offset + decode_qos_umts(tvb, offset, ext_tree_pdp, "QoS requested", 1); + offset = offset + decode_qos_umts(tvb, offset, ext_tree_pdp, "QoS negotiated", 1); + break; + default: + break; + } + + sn_down = tvb_get_ntohs(tvb, offset); + sn_up = tvb_get_ntohs(tvb, offset+2); + pdu_send_no = tvb_get_guint8(tvb, offset+4); + pdu_rec_no = tvb_get_guint8(tvb, offset+5); + + proto_tree_add_text(ext_tree_pdp, tvb, offset, 2, "Sequence number down: %u", sn_down); + proto_tree_add_text(ext_tree_pdp, tvb, offset+2, 2, "Sequence number up: %u", sn_up); + proto_tree_add_text(ext_tree_pdp, tvb, offset+4, 1, "Send N-PDU number: %u", pdu_send_no); + proto_tree_add_text(ext_tree_pdp, tvb, offset+5, 1, "Receive N-PDU number: %u", pdu_rec_no); + + switch (gtp_version) { + case 0: + up_flow = tvb_get_ntohs(tvb, offset+6); + proto_tree_add_text(ext_tree_pdp, tvb, offset+6, 2, "Uplink flow label signalling: %u", up_flow); + offset = offset + 8; + break; + case 1: + up_teid = tvb_get_ntohl(tvb, offset+6); + up_teid_cp = tvb_get_ntohl(tvb, offset+10); + pdp_cntxt_id = tvb_get_guint8(tvb, offset+14); + proto_tree_add_text(ext_tree_pdp, tvb, offset+6, 4, "Uplink TEID: %x", up_teid); + proto_tree_add_text(ext_tree_pdp, tvb, offset+10, 4, "Uplink TEID control plane: %x", up_teid_cp); + proto_tree_add_text(ext_tree_pdp, tvb, offset+14, 1, "PDP context identifier: %u", pdp_cntxt_id); + offset = offset + 15; + break; + default: + break; + } + + pdp_type_org = tvb_get_guint8(tvb, offset) & 0x0F; + pdp_type_num = tvb_get_guint8(tvb, offset+1); + pdp_addr_len = tvb_get_guint8(tvb, offset+2); + + proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "PDP organization: %s", val_to_str(pdp_type_org, pdp_type, "Unknown PDP org")); + proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 1, "PDP type: %s", val_to_str(pdp_type_num, pdp_org_type, "Unknown PDP type")); + proto_tree_add_text(ext_tree_pdp, tvb, offset+2, 1, "PDP address length: %u", pdp_addr_len); + + if (pdp_addr_len > 0) { + switch (pdp_type_num) { + case 0x21: + tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+3, sizeof addr_ipv4); + proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 4, "PDP address: %s", ip_to_str((guint8 *)&addr_ipv4)); + break; + case 0x57: + tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+3, sizeof addr_ipv6); + proto_tree_add_text(ext_tree_pdp, tvb, offset+3, 16, "PDP address: %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6)); + break; + default: + break; + } + } + + offset = offset + 3 + pdp_addr_len; + + ggsn_addr_len = tvb_get_guint8(tvb, offset); + proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "GGSN address length: %u", ggsn_addr_len); + + switch (ggsn_addr_len) { + case 4: + tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+1, sizeof addr_ipv4); + proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 4, "GGSN address: %s", ip_to_str((guint8 *)&addr_ipv4)); + break; + case 16: + tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+1, sizeof addr_ipv6); + proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 16, "GGSN address: %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6)); + break; + default: + break; + } + + offset = offset + 1 + ggsn_addr_len; + + if (gtp_version == 1) { + + ggsn_addr_len = tvb_get_guint8(tvb, offset); + proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "GGSN 2 address length: %u", ggsn_addr_len); + + switch (ggsn_addr_len) { + case 4: + tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+1, sizeof addr_ipv4); + proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 4, "GGSN 2 address: %s", ip_to_str((guint8 *)&addr_ipv4)); + break; + case 16: + tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+1, sizeof addr_ipv6); + proto_tree_add_text(ext_tree_pdp, tvb, offset+1, 16, "GGSN 2 address: %s", ip6_to_str((struct e_in6_addr*)&addr_ipv6)); + break; + default: + break; + } + offset = offset + 1 + ggsn_addr_len; + + } + + apn_len = tvb_get_guint8(tvb, offset); + proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "APN length: %u", apn_len); + decode_apn(tvb, offset+1, apn_len, ext_tree_pdp); + + offset = offset + 1 + apn_len; + + trans_id = tvb_get_guint8(tvb, offset); + proto_tree_add_text(ext_tree_pdp, tvb, offset, 1, "Transaction identifier: %u", trans_id); + + return 3+length; +} + +/* GPRS: 9.60, v7.6.0, chapter 7.9.21 + * UMTS: 29.060, v4.0, chapter 7.7.30 + */ +static int +decode_gtp_apn(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 length; + proto_tree *ext_tree_apn; + proto_item *te; + + length = tvb_get_ntohs(tvb, offset+1); + + te = proto_tree_add_text (tree, tvb, offset, length+3, val_to_str(GTP_EXT_APN, gtp_val, "Unknown field")); + ext_tree_apn = proto_item_add_subtree(te, ett_gtp_apn); + + proto_tree_add_text (ext_tree_apn, tvb, offset+1, 2, "APN length : %u", length); + decode_apn (tvb, offset+3, length, ext_tree_apn); + + return 3+length; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.22 + * 4.08 v. 7.1.2, chapter 10.5.6.3 (p.580) + * UMTS: 29.060 v4.0, chapter 7.7.31 + * 24.008, v4.2, chapter 10.5.6.3 + */ +int +decode_gtp_proto_conf(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) { + + guint16 length, proto_offset; + guint16 proto_id; + guint8 conf, proto_len, cnt = 1; + tvbuff_t *next_tvb; + proto_tree *ext_tree_proto; + proto_item *te; + gboolean save_writable; + + length = tvb_get_ntohs(tvb, offset + 1); + + te = proto_tree_add_text(tree, tvb, offset, length + 3, val_to_str(GTP_EXT_PROTO_CONF, gtp_val, "Unknown message")); + ext_tree_proto = proto_item_add_subtree(te, ett_gtp_proto); + + proto_tree_add_text(ext_tree_proto, tvb, offset + 1, 2, "Length: %u", length); + + if (length < 1) return 3; + + conf = tvb_get_guint8 (tvb, offset + 3) & 0x07; + proto_tree_add_text (ext_tree_proto, tvb, offset + 3, 1, "Configuration protocol (00000xxx): %u", conf); + + proto_offset = 1; /* ... 1st byte is conf */ + offset += 4; + + for (;;) { + if (proto_offset >= length) break; + proto_id = tvb_get_ntohs (tvb, offset); + proto_len = tvb_get_guint8 (tvb, offset + 2); + proto_offset += proto_len + 3; /* 3 = proto id + length byte */ + + if (proto_len > 0) { + + proto_tree_add_text (ext_tree_proto, tvb, offset, 2, "Protocol %u ID: %s (0x%04x)", + cnt, val_to_str(proto_id, ppp_vals, "Unknown"), + proto_id); + proto_tree_add_text (ext_tree_proto, tvb, offset+2, 1, "Protocol %u length: %u", cnt, proto_len); + + /* + * Don't allow the dissector for the configuration + * protocol in question to update the columns - this + * is GTP, not PPP. + */ + save_writable = col_get_writable(pinfo->cinfo); + col_set_writable(pinfo->cinfo, FALSE); + + /* + * XXX - should we have our own dissector table, + * solely for configuration protocols, so that bogus + * values don't cause us to dissect the protocol + * data as, for example, IP? + */ + next_tvb = tvb_new_subset (tvb, offset + 3, proto_len, proto_len); + if (!dissector_try_port(ppp_subdissector_table, + proto_id, next_tvb, pinfo, ext_tree_proto)) { + call_dissector(data_handle, next_tvb, pinfo, + ext_tree_proto); + } + + col_set_writable(pinfo->cinfo, save_writable); + } + + offset += proto_len + 3; + cnt++; + } + + return 3 + length; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.23 + * UMTS: 29.060 v4.0, chapter 7.7.32 + */ +static int +decode_gtp_gsn_addr(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint8 addr_type, addr_len; + guint16 length; + guint32 addr_ipv4; + struct e_in6_addr addr_ipv6; + proto_tree *ext_tree_gsn_addr; + proto_item *te; + + length = tvb_get_ntohs(tvb, offset+1); + + te = proto_tree_add_text(tree, tvb, offset, 3+length, "GSN address : "); + ext_tree_gsn_addr = proto_item_add_subtree(te, ett_gtp_gsn_addr); + + switch (length) { + case 4: + proto_tree_add_text(ext_tree_gsn_addr, tvb, offset+1, 2, "GSN address length : %u", length); + tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+3, sizeof addr_ipv4); + proto_item_append_text(te, "%s", ip_to_str((guint8 *)&addr_ipv4)); + proto_tree_add_ipv4(ext_tree_gsn_addr, hf_gtp_gsn_ipv4, tvb, offset+3, 4, addr_ipv4); + break; + case 5: + proto_tree_add_text(ext_tree_gsn_addr, tvb, offset+1, 2, "GSN address Information Element length : %u", length); + addr_type = tvb_get_guint8(tvb, offset+3) & 0xC0; + proto_tree_add_uint(ext_tree_gsn_addr, hf_gtp_gsn_addr_type, tvb, offset+3, 1, addr_type); + addr_len = tvb_get_guint8(tvb, offset+3) & 0x3F; + proto_tree_add_uint(ext_tree_gsn_addr, hf_gtp_gsn_addr_len, tvb, offset+3, 1, addr_len); + tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+4, sizeof addr_ipv4); + proto_item_append_text(te, "%s", ip_to_str((guint8 *)&addr_ipv4)); + proto_tree_add_ipv4(ext_tree_gsn_addr, hf_gtp_gsn_ipv4, tvb, offset+4, 4, addr_ipv4); + break; + case 16: + proto_tree_add_text(ext_tree_gsn_addr, tvb, offset+1, 2, "GSN address length : %u", length); + tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+3, sizeof addr_ipv6); + proto_item_append_text(te, "%s", ip6_to_str((struct e_in6_addr*)&addr_ipv6)); + proto_tree_add_ipv6(ext_tree_gsn_addr, hf_gtp_gsn_ipv6, tvb, offset+3, 16, (guint8*)&addr_ipv6); + break; + case 17: + proto_tree_add_text(ext_tree_gsn_addr, tvb, offset+1, 2, "GSN address Information Element length : %u", length); + addr_type = tvb_get_guint8(tvb, offset+3) & 0xC0; + proto_tree_add_uint(ext_tree_gsn_addr, hf_gtp_gsn_addr_type, tvb, offset+3, 1, addr_type); + addr_len = tvb_get_guint8(tvb, offset+3) & 0x3F; + proto_tree_add_uint(ext_tree_gsn_addr, hf_gtp_gsn_addr_len, tvb, offset+3, 1, addr_len); + tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+4, sizeof addr_ipv6); + proto_item_append_text(te, "%s", ip6_to_str((struct e_in6_addr*)&addr_ipv6)); + proto_tree_add_ipv6(ext_tree_gsn_addr, hf_gtp_gsn_ipv6, tvb, offset+4, 16, (guint8*)&addr_ipv6); + break; + default: + proto_item_append_text(te, "unknown type or wrong length"); + break; + } + + return 3+length; +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.24 + * UMTS: 29.060 v4.0, chapter 7.7.33 + */ +static int +decode_gtp_msisdn(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + const guint8 *msisdn_val; + gchar *msisdn_str; + guint16 length; + + length = tvb_get_ntohs(tvb, offset+1); + + if (length < 1) return 3; + + msisdn_val = tvb_get_ptr(tvb, offset+3, length); + msisdn_str = msisdn_to_str(msisdn_val, length); + + proto_tree_add_string(tree, hf_gtp_msisdn, tvb, offset, 3+length, msisdn_str); + + return 3+length; +} + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.34 + * 24.008 v4.2, chapter 10.5.6.5 + */ +static int +decode_gtp_qos_umts(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + return decode_qos_umts(tvb, offset, tree, "Quality of Service", 2); +} + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.35 + */ +static int +decode_gtp_auth_qui(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + return (1 + decode_quintuplet(tvb, offset+1, tree, 1, 1)); + +} + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.36 + * 24.008 v4.2, chapter 10.5.6.12 + */ +static int +decode_gtp_tft(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 length, port1, port2, tos; + guint8 tft_flags, tft_code, no_packet_filters, i, pf_id, pf_eval, pf_len, pf_content_id, proto, spare; + guint pf_offset; + guint32 mask_ipv4, addr_ipv4, ipsec_id, label; + struct e_in6_addr addr_ipv6, mask_ipv6; + proto_tree *ext_tree_tft, *ext_tree_tft_pf, *ext_tree_tft_flags; + proto_item *te, *tee, *tef; + + length = tvb_get_ntohs(tvb, offset+1); + + te = proto_tree_add_text(tree, tvb, offset, 3+length, "Traffic flow template"); + ext_tree_tft = proto_item_add_subtree(te, ett_gtp_tft); + + tft_flags = tvb_get_guint8(tvb, offset+3); + tft_code = (tft_flags >> 5) & 0x07; + spare = (tft_flags >> 4) & 0x01; + no_packet_filters = tft_flags & 0x0F; + + proto_tree_add_text(ext_tree_tft, tvb, offset+1, 2, "TFT length: %u", length); + + tef = proto_tree_add_text (ext_tree_tft, tvb, offset + 3, 1, "TFT flags"); + ext_tree_tft_flags = proto_item_add_subtree (tef, ett_gtp_tft_flags); + proto_tree_add_uint (ext_tree_tft_flags, hf_gtp_tft_code, tvb, offset + 3, 1, tft_flags); + proto_tree_add_uint (ext_tree_tft_flags, hf_gtp_tft_spare, tvb, offset + 3, 1, tft_flags); + proto_tree_add_uint (ext_tree_tft_flags, hf_gtp_tft_number, tvb, offset + 3, 1, tft_flags); + + offset = offset + 4; + + for (i=0;i<no_packet_filters;i++) { + + pf_id = tvb_get_guint8(tvb, offset); + + tee = proto_tree_add_text (ext_tree_tft, tvb, offset, 1, "Packet filter id: %u", pf_id); + ext_tree_tft_pf = proto_item_add_subtree (tee, ett_gtp_tft_pf); + offset++; + + if (tft_code != 2) { + + pf_eval = tvb_get_guint8(tvb, offset); + pf_len = tvb_get_guint8(tvb, offset + 1); + + proto_tree_add_uint (ext_tree_tft_pf, hf_gtp_tft_eval, tvb, offset, 1, pf_eval); + proto_tree_add_text (ext_tree_tft_pf, tvb, offset+1, 1, "Content length: %u", pf_len); + + offset = offset + 2; + pf_offset = 0; + + while (pf_offset < pf_len) { + + pf_content_id = tvb_get_guint8 (tvb, offset + pf_offset); + + switch (pf_content_id) { + /* address IPv4 and mask = 8 bytes*/ + case 0x10: + tvb_memcpy (tvb, (guint8 *)&addr_ipv4, offset + pf_offset + 1, sizeof addr_ipv4); + tvb_memcpy (tvb, (guint8 *)&mask_ipv4, offset + pf_offset + 5, sizeof mask_ipv4); + proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 9, "ID 0x10: IPv4/mask: %s/%s", ip_to_str ((guint8 *)&addr_ipv4), ip_to_str ((guint8 *)&mask_ipv4)); + pf_offset = pf_offset + 9; + break; + /* address IPv6 and mask = 32 bytes*/ + case 0x20: + tvb_memcpy (tvb, (guint8 *)&addr_ipv6, offset+pf_offset+1, sizeof addr_ipv6); + tvb_memcpy (tvb, (guint8 *)&mask_ipv6, offset+pf_offset+17, sizeof mask_ipv6); + proto_tree_add_text (ext_tree_tft_pf, tvb, offset+pf_offset, 33, "ID 0x20: IPv6/mask: %s/%s", ip6_to_str ((struct e_in6_addr*)&addr_ipv6), ip6_to_str ((struct e_in6_addr*)&mask_ipv6)); + pf_offset = pf_offset + 33; + break; + /* protocol identifier/next header type = 1 byte*/ + case 0x30: + proto = tvb_get_guint8 (tvb, offset + pf_offset + 1); + proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 2, "ID 0x30: IPv4 protocol identifier/IPv6 next header: %u (%x)", proto, proto); + pf_offset = pf_offset + 2; + break; + /* single destination port type = 2 bytes */ + case 0x40: + port1 = tvb_get_ntohs (tvb, offset + pf_offset + 1); + proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 3, "ID 0x40: destination port: %u", port1); + pf_offset = pf_offset + 3; + break; + /* destination port range type = 4 bytes */ + case 0x41: + port1 = tvb_get_ntohs (tvb, offset + pf_offset + 1); + port2 = tvb_get_ntohs (tvb, offset + pf_offset + 3); + proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 5, "ID 0x41: destination port range: %u - %u", port1, port2); + pf_offset = pf_offset + 5; + break; + /* single source port type = 2 bytes */ + case 0x50: + port1 = tvb_get_ntohs (tvb, offset + pf_offset + 1); + proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 3, "ID 0x50: source port: %u", port1); + pf_offset = pf_offset + 3; + break; + /* source port range type = 4 bytes */ + case 0x51: + port1 = tvb_get_ntohs (tvb, offset + pf_offset + 1); + port2 = tvb_get_ntohs (tvb, offset + pf_offset + 3); + proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 5, "ID 0x51: source port range: %u - %u", port1, port2); + pf_offset = pf_offset + 5; + break; + /* security parameter index type = 4 bytes */ + case 0x60: + ipsec_id = tvb_get_ntohl (tvb, offset + pf_offset + 1); + proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 5, "ID 0x60: security parameter index: %x", ipsec_id); + pf_offset = pf_offset + 5; + break; + /* type of service/traffic class type = 2 bytes */ + case 0x70: + tos = tvb_get_ntohs (tvb, offset + pf_offset + 1); + proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 2, "ID 0x70: Type of Service/Traffic Class: %u (%x)", tos, tos); + pf_offset = pf_offset + 3; + break; + /* flow label type = 3 bytes */ + case 0x80: + label = tvb_get_ntoh24(tvb, offset + pf_offset + 1) & 0x0FFFFF; + proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 4, "ID 0x80: Flow Label: %u (%x)", label, label); + pf_offset = pf_offset + 4; + break; + + default: + proto_tree_add_text (ext_tree_tft_pf, tvb, offset + pf_offset, 1, "Unknown value: %x ", pf_content_id); + pf_offset++; /* to avoid infinite loop */ + break; + } + } + + offset = offset + pf_offset; + } + } + + return 3 + length; +} + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.37 + * 25.413 v3.4, chapter ??? + */ +static int +decode_gtp_target_id(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 length; + + length = tvb_get_ntohs(tvb, offset + 1); + + proto_tree_add_text(tree, tvb, offset, 3 + length, "Targer Identification"); + + return 3 + length; +} + + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.38 + */ +static int +decode_gtp_utran_cont(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 length; + + length = tvb_get_ntohs(tvb, offset + 1); + + proto_tree_add_text(tree, tvb, offset, 3 + length, "UTRAN transparent field"); + + return 3 + length; + +} + + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.39 + */ +static int +decode_gtp_rab_setup(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint32 teid, addr_ipv4; + guint16 length; + guint8 nsapi; + struct e_in6_addr addr_ipv6; + proto_tree *ext_tree_rab_setup; + proto_item *te; + + length = tvb_get_ntohs(tvb, offset + 1); + nsapi = tvb_get_guint8(tvb, offset + 3) & 0x0F; + + te = proto_tree_add_text(tree, tvb, offset, 3+length, "Radio Access Bearer Setup Information"); + ext_tree_rab_setup = proto_item_add_subtree(te, ett_gtp_rab_setup); + + proto_tree_add_text(ext_tree_rab_setup, tvb, offset+1, 2, "RAB setup length : %u", length); + proto_tree_add_uint(ext_tree_rab_setup, hf_gtp_nsapi, tvb, offset+3, 1, nsapi); + + if (length > 1) { + + teid = tvb_get_ntohl(tvb, offset + 4); + + proto_tree_add_uint(ext_tree_rab_setup, hf_gtp_teid_data, tvb, offset+4, 4, teid); + + switch (length) { + case 12: + tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+8, sizeof addr_ipv4); + proto_tree_add_ipv4(ext_tree_rab_setup, hf_gtp_rnc_ipv4, tvb, offset+8, 4, addr_ipv4); + break; + case 24: + tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+8, sizeof addr_ipv6); + proto_tree_add_ipv6(ext_tree_rab_setup, hf_gtp_rnc_ipv6, tvb, offset+8, 16, (guint8 *)&addr_ipv6); + break; + default: + break; + } + } + + return 3 + length; +} + + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.40 + */ +static int +decode_gtp_hdr_list(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + int i; + guint8 length, hdr; + proto_tree *ext_tree_hdr_list; + proto_item *te; + + length = tvb_get_guint8(tvb, offset + 1); + + te = proto_tree_add_text(tree, tvb, offset, 2+length, "%s", val_to_str(GTP_EXT_HDR_LIST, gtp_val, "Unknown")); + ext_tree_hdr_list = proto_item_add_subtree(te, ett_gtp_hdr_list); + + proto_tree_add_text(ext_tree_hdr_list, tvb, offset+1, 1, "Number of Extension Header Types in list (i.e., length) : %u", length); + + for(i=0 ; i<length ; i++) { + hdr = tvb_get_guint8(tvb, offset+2+i); + + proto_tree_add_text(ext_tree_hdr_list, tvb, offset+2+i, 1, "No. %u --> Extension Header Type value : %s (%u)", i+1, val_to_str(hdr, gtp_val, "Unknown Extension Header Type"), hdr); + } + + return 2 + length; +} + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.41 + * TODO: find TriggerID description + */ +static int +decode_gtp_trigger_id(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 length; + + length = tvb_get_ntohs(tvb, offset + 1); + + proto_tree_add_text(tree, tvb, offset, 3+length, "%s length : %u", val_to_str(GTP_EXT_TRIGGER_ID, gtp_val, "Unknown"), length); + + return 3 + length; + +} + +/* GPRS: not present + * UMTS: 29.060 v4.0, chapter 7.7.42 + * TODO: find OMC-ID description + */ +static int +decode_gtp_omc_id(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 length; + + length = tvb_get_ntohs(tvb, offset + 1); + + proto_tree_add_text(tree, tvb, offset, 3+length, "%s length : %u", val_to_str(GTP_EXT_OMC_ID, gtp_val, "Unknown"), length); + + return 3 + length; + +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.25 + * UMTS: 29.060 v4.0, chapter 7.7.43 + */ +static int +decode_gtp_chrg_addr(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 length; + guint32 addr_ipv4; + struct e_in6_addr addr_ipv6; + proto_tree *ext_tree_chrg_addr; + proto_item *te; + + length = tvb_get_ntohs(tvb, offset+1); + + te = proto_tree_add_text(tree, tvb, offset, 3+length, "%s : ", val_to_str(GTP_EXT_CHRG_ADDR, gtp_val, "Unknown")); + ext_tree_chrg_addr = proto_item_add_subtree(te, ett_gtp_chrg_addr); + + proto_tree_add_text(ext_tree_chrg_addr, tvb, offset+1, 2, "%s length : %u", val_to_str(GTP_EXT_CHRG_ADDR, gtp_val, "Unknown"), length); + + switch (length) { + case 4: + tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+3, sizeof addr_ipv4); + proto_item_append_text(te, "%s", ip_to_str((guint8 *)&addr_ipv4)); + proto_tree_add_ipv4 (ext_tree_chrg_addr, hf_gtp_chrg_ipv4, tvb, offset+3, 4, addr_ipv4); + break; + case 16: + tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+3, sizeof addr_ipv6); + proto_item_append_text(te, "%s", ip6_to_str((struct e_in6_addr*)&addr_ipv6)); + proto_tree_add_ipv6 (ext_tree_chrg_addr, hf_gtp_chrg_ipv6, tvb, offset+3, 16, (guint8*)&addr_ipv6); + break; + default: + proto_item_append_text(te, "unknown type or wrong length"); + break; + } + + return 3 + length; +} + +/* GPRS: 12.15 + * UMTS: 33.015 + */ +static int +decode_gtp_rel_pack(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 length, n, number; + proto_tree *ext_tree_rel_pack; + proto_item *te; + + length = tvb_get_ntohs(tvb, offset + 1); + + te = proto_tree_add_text(tree, tvb, offset, 3 + length, "Sequence numbers of released packets IE"); + ext_tree_rel_pack = proto_item_add_subtree(te, ett_gtp_rel_pack); + + n = 0; + + while (n < length) { + + number = tvb_get_ntohs(tvb, offset + 3 + n); + proto_tree_add_text(ext_tree_rel_pack, tvb, offset + 3 + n, 2, "%u", number); + n = n + 2; + + } + + return 3 + length; +} + +/* GPRS: 12.15 + * UMTS: 33.015 + */ +static int +decode_gtp_can_pack(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 length, n, number; + proto_tree *ext_tree_can_pack; + proto_item *te; + + length = tvb_get_ntohs(tvb, offset + 1); + + te = proto_tree_add_text(tree, tvb, offset, 3 + length, "Sequence numbers of cancelled packets IE"); + ext_tree_can_pack = proto_item_add_subtree(te, ett_gtp_can_pack); + + n = 0; + + while (n < length) { + + number = tvb_get_ntohs(tvb, offset + 3 + n); + proto_tree_add_text(ext_tree_can_pack, tvb, offset + 3 + n, 2, "%u", number); + n = n + 2; + } + + return 3 + length; +} + +/* CDRs dissector */ +static int +decode_gtp_data_req(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 length, format_ver; + guint8 no, format; + proto_tree *ext_tree; + proto_item *te; + tvbuff_t *next_tvb; + + te = proto_tree_add_text(tree, tvb, offset, 1, val_to_str(GTP_EXT_DATA_REQ, gtp_val, "Unknown message")); + ext_tree = proto_item_add_subtree(te, ett_gtp_ext); + + length = tvb_get_ntohs(tvb, offset + 1); + no = tvb_get_guint8(tvb, offset + 3); + format = tvb_get_guint8(tvb, offset + 4); + format_ver = tvb_get_ntohs(tvb, offset + 5); + + proto_tree_add_text(ext_tree, tvb, offset+1, 2, "Length: %u", length); + proto_tree_add_text(ext_tree, tvb, offset+3, 1, "Number of data records: %u", no); + proto_tree_add_text(ext_tree, tvb, offset+4, 1, "Data record format: %u", format); + proto_tree_add_text(ext_tree, tvb, offset+5, 2, "Data record format version: %u", format_ver); + + if (gtpcdr_handle) { + next_tvb = tvb_new_subset (tvb, offset, -1, -1); + call_dissector (gtpcdr_handle, next_tvb, pinfo, tree); + } + else + proto_tree_add_text (tree, tvb, offset, 0, "Data"); + + return 3+length; +} + +/* GPRS: 12.15 + * UMTS: 33.015 + */ +static int +decode_gtp_data_resp(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 length, n, number; + proto_tree *ext_tree_data_resp; + proto_item *te; + + length = tvb_get_ntohs(tvb, offset + 1); + + te = proto_tree_add_text(tree, tvb, offset, 3 + length, "Requests responded"); + ext_tree_data_resp = proto_item_add_subtree(te, ett_gtp_data_resp); + + n = 0; + + while (n < length) { + + number = tvb_get_ntohs(tvb, offset + 3 + n); + proto_tree_add_text(ext_tree_data_resp, tvb, offset + 3 + n, 2, "%u", number); + n = n + 2; + + } + + return 3 + length; + +} + +/* GPRS: 12.15 + * UMTS: 33.015 + */ +static int +decode_gtp_node_addr(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 length; + guint32 addr_ipv4; + struct e_in6_addr addr_ipv6; + proto_tree *ext_tree_node_addr; + proto_item *te; + + length = tvb_get_ntohs(tvb, offset+1); + + te = proto_tree_add_text(tree, tvb, offset, 3+length, "Node address: "); + ext_tree_node_addr = proto_item_add_subtree(te, ett_gtp_node_addr); + + proto_tree_add_text (ext_tree_node_addr, tvb, offset+1, 2, "Node address length: %u", length); + + switch (length) { + case 4: + tvb_memcpy(tvb, (guint8 *)&addr_ipv4, offset+3, sizeof addr_ipv4); + proto_item_append_text(te, "%s", ip_to_str((guint8 *)&addr_ipv4)); + proto_tree_add_ipv4 (ext_tree_node_addr, hf_gtp_node_ipv4, tvb, offset+3, 4, addr_ipv4); + break; + case 16: + tvb_memcpy(tvb, (guint8 *)&addr_ipv6, offset+3, sizeof addr_ipv6); + proto_item_append_text(te, "%s", ip6_to_str((struct e_in6_addr*)&addr_ipv6)); + proto_tree_add_ipv6 (ext_tree_node_addr, hf_gtp_node_ipv6, tvb, offset+3, 16, (guint8*)&addr_ipv6); + break; + default: + proto_item_append_text(te, "unknown type or wrong length"); + break; + } + + return 3 + length; + +} + +/* GPRS: 9.60 v7.6.0, chapter 7.9.26 + * UMTS: 29.060 v4.0, chapter 7.7.44 + */ +static int +decode_gtp_priv_ext(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + guint16 length, ext_id; + proto_tree *ext_tree_priv_ext; + proto_item *te; + + te = proto_tree_add_text(tree, tvb, offset, 1, val_to_str(GTP_EXT_PRIV_EXT, gtp_val, "Unknown message")); + ext_tree_priv_ext = proto_item_add_subtree(te, ett_gtp_ext); + + length = tvb_get_ntohs(tvb, offset+1); + if (length >= 2) { + ext_id = tvb_get_ntohs(tvb, offset+3); + proto_tree_add_uint(ext_tree_priv_ext, hf_gtp_ext_id, tvb, offset+3, 2, ext_id); + + /* + * XXX - is this always a text string? Or should it be + * displayed as hex data? + */ + if (length > 2) + proto_tree_add_item(ext_tree_priv_ext, hf_gtp_ext_val, tvb, offset+5, length-2, FALSE); + } + + return 3+length; +} + +static int +decode_gtp_unknown(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree) { + + proto_tree_add_text(tree, tvb, offset, 1, "Unknown extension header"); + + return tvb_length_remaining(tvb, offset); +} + +static void +dissect_gtp (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + struct _gtp_hdr gtp_hdr; + proto_tree *gtp_tree, *flags_tree; + proto_item *ti, *tf; + int i, offset, length, gtp_prime, checked_field, mandatory; + int seq_no, flow_label; + guint8 pdu_no, next_hdr = 0, ext_hdr_val; + const guint8 *tid_val; + gchar *tid_str; + guint32 teid; + tvbuff_t *next_tvb; + guint8 sub_proto, acfield_len = 0, control_field; + + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "GTP"); + if (check_col(pinfo->cinfo, COL_INFO)) + col_clear(pinfo->cinfo, COL_INFO); + + tvb_memcpy(tvb, (guint8 *)>p_hdr, 0, 4); + + if (!(gtp_hdr.flags & 0x10)) + gtp_prime = 1; + else + gtp_prime = 0; + + switch ((gtp_hdr.flags >> 5) & 0x07) { + case 0: + gtp_version = 0; + break; + case 1: + gtp_version = 1; + break; + default: + gtp_version = 1; + break; + } + + if (check_col(pinfo->cinfo, COL_INFO)) + col_add_str(pinfo->cinfo, COL_INFO, val_to_str(gtp_hdr.message, message_type, "Unknown")); + + if (tree) { + ti = proto_tree_add_item (tree, proto_gtp, tvb, 0, -1, FALSE); + gtp_tree = proto_item_add_subtree(ti, ett_gtp); + + tf = proto_tree_add_uint (gtp_tree, hf_gtp_flags, tvb, 0, 1, gtp_hdr.flags); + flags_tree = proto_item_add_subtree (tf, ett_gtp_flags); + + proto_tree_add_uint (flags_tree, hf_gtp_flags_ver, tvb, 0, 1, gtp_hdr.flags); + proto_tree_add_uint (flags_tree, hf_gtp_flags_pt, tvb, 0, 1, gtp_hdr.flags); + + switch (gtp_version) { + case 0: + proto_tree_add_uint (flags_tree, hf_gtp_flags_spare1, tvb, 0, 1, gtp_hdr.flags); + proto_tree_add_boolean (flags_tree, hf_gtp_flags_snn, tvb, 0, 1, gtp_hdr.flags); + break; + case 1: + proto_tree_add_uint (flags_tree, hf_gtp_flags_spare2, tvb, 0, 1, gtp_hdr.flags); + proto_tree_add_boolean (flags_tree, hf_gtp_flags_e, tvb, 0, 1, gtp_hdr.flags); + proto_tree_add_boolean (flags_tree, hf_gtp_flags_s, tvb, 0, 1, gtp_hdr.flags); + proto_tree_add_boolean (flags_tree, hf_gtp_flags_pn, tvb, 0, 1, gtp_hdr.flags); + break; + default: + break; + } + + proto_tree_add_uint (gtp_tree, hf_gtp_message_type, tvb, 1, 1, gtp_hdr.message); + + gtp_hdr.length = g_ntohs (gtp_hdr.length); + proto_tree_add_uint (gtp_tree, hf_gtp_length, tvb, 2, 2, gtp_hdr.length); + + offset = 4; + + if (gtp_prime) { + seq_no = tvb_get_ntohs (tvb, offset); + proto_tree_add_uint (gtp_tree, hf_gtp_seq_number, tvb, offset, 2, seq_no); + offset += 2; + } else + switch (gtp_version) { + case 0: + seq_no = tvb_get_ntohs (tvb, offset); + proto_tree_add_uint (gtp_tree, hf_gtp_seq_number, tvb, offset, 2, seq_no); + offset += 2; + + flow_label = tvb_get_ntohs (tvb, offset); + proto_tree_add_uint (gtp_tree, hf_gtp_flow_label, tvb, offset, 2, flow_label); + offset += 2; + + pdu_no = tvb_get_guint8 (tvb, offset); + proto_tree_add_uint (gtp_tree, hf_gtp_sndcp_number, tvb, offset, 1, pdu_no); + offset += 4; + + tid_val = tvb_get_ptr(tvb, offset, 8); + tid_str = id_to_str (tid_val); + proto_tree_add_string (gtp_tree, hf_gtp_tid, tvb, offset, 8, tid_str); + offset += 8; + break; + case 1: + teid = tvb_get_ntohl (tvb, offset); + proto_tree_add_uint (gtp_tree, hf_gtp_teid, tvb, offset, 4, teid); + offset += 4; + + if (gtp_hdr.flags & 0x07) { + seq_no = tvb_get_ntohs (tvb, offset); + proto_tree_add_uint (gtp_tree, hf_gtp_seq_number, tvb, offset, 2, seq_no); + offset += 2; + + pdu_no = tvb_get_guint8 (tvb, offset); + proto_tree_add_uint (gtp_tree, hf_gtp_npdu_number, tvb, offset, 1, pdu_no); + offset++; + + next_hdr = tvb_get_guint8 (tvb, offset); + proto_tree_add_uint (gtp_tree, hf_gtp_next, tvb, offset, 1, next_hdr); + if (!next_hdr) + offset++; + } + break; + default: + break; + } + + + if (gtp_hdr.message != GTP_MSG_TPDU) { + proto_tree_add_text(gtp_tree, tvb, 0, 0, "[--- end of GTP header, beginning of extension headers ---]"); + length = tvb_length (tvb); + mandatory = 0; /* check order of GTP fields against ETSI */ + for (;;) { + if (offset >= length) + break; + if (next_hdr) { + ext_hdr_val = next_hdr; + next_hdr = 0; + } + else + ext_hdr_val = tvb_get_guint8 (tvb, offset); + if (gtp_etsi_order) { + checked_field = check_field_presence (gtp_hdr.message, ext_hdr_val , (int *)&mandatory); + switch (checked_field) { + case -2: proto_tree_add_text (gtp_tree, tvb, 0, 0, "[WARNING] message not found"); + break; + case -1: proto_tree_add_text (gtp_tree, tvb, 0, 0, "[WARNING] field not present"); + break; + case 0: break; + default: proto_tree_add_text (gtp_tree, tvb, offset, 1, "[WARNING] wrong next field, should be: %s", val_to_str(checked_field, gtp_val, "Unknown extension field")); + break; + } + } + + i = -1; + while (gtpopt[++i].optcode) + if (gtpopt[i].optcode == ext_hdr_val) + break; + offset = offset + (*gtpopt[i].decode)(tvb, offset, pinfo, gtp_tree); + } + } + } + + if ((gtp_hdr.message == GTP_MSG_TPDU) && gtp_tpdu) { + + if (gtp_prime) + offset = 6; + else + if (gtp_version == 1) { + if (gtp_hdr.flags & 0x07) { + offset = 11; + if (tvb_get_guint8 (tvb, offset) == 0) + offset++; + } + else + offset = 8; + } + else + offset = 20; + + sub_proto = tvb_get_guint8 (tvb, offset); + + if ((sub_proto >= 0x45) && (sub_proto <= 0x4e)) { + /* this is most likely an IPv4 packet + * we can exclude 0x40 - 0x44 because the minimum header size is 20 octets + * 0x4f is excluded because PPP protocol type "IPv6 header compression" + * with protocol field compression is more likely than a plain IPv4 packet with 60 octet header size */ + + next_tvb = tvb_new_subset (tvb, offset, -1, -1); + call_dissector(ip_handle, next_tvb, pinfo, tree); + + } else + if ((sub_proto & 0xf0) == 0x60){ + /* this is most likely an IPv6 packet */ + next_tvb = tvb_new_subset (tvb, offset, -1, -1); + call_dissector (ipv6_handle, next_tvb, pinfo, tree); + } else { + /* this seems to be a PPP packet */ + + if (sub_proto == 0xff) { + /* this might be an address field, even it shouldn't be here */ + control_field = tvb_get_guint8 (tvb, offset + 1); + if (control_field == 0x03) + /* now we are pretty sure that address and control field are mistakenly inserted -> ignore it for PPP dissection */ + acfield_len = 2; + } + + next_tvb = tvb_new_subset (tvb, offset + acfield_len, -1, -1); + call_dissector (ppp_handle, next_tvb, pinfo, tree); + } + + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_append_str_gtp(pinfo->cinfo, COL_PROTOCOL, "GTP"); + } +} + +static const true_false_string yes_no_tfs = { + "yes" , + "no" +}; + +void +proto_register_gtp(void) +{ + static hf_register_info hf_gtp[] = { + { &hf_gtp_apn, { "APN", "gtp.apn", FT_STRING, BASE_DEC, NULL, 0, "Access Point Name", HFILL }}, + { &hf_gtp_cause, { "Cause ", "gtp.cause", FT_UINT8, BASE_DEC, VALS(cause_type), 0, "Cause of operation", HFILL }}, + { &hf_gtp_chrg_char, { "Charging characteristics", "gtp.chrg_char", FT_UINT16, BASE_DEC, NULL, 0, "Charging characteristics", HFILL }}, + { &hf_gtp_chrg_char_s, { "Spare", "gtp.chrg_char_s", FT_UINT16, BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_S, "Spare", HFILL }}, + { &hf_gtp_chrg_char_n, { "Normal charging", "gtp.chrg_char_n", FT_UINT16, BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_N, "Normal charging", HFILL }}, + { &hf_gtp_chrg_char_p, { "Prepaid charging", "gtp.chrg_char_p", FT_UINT16, BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_P, "Prepaid charging", HFILL }}, + { &hf_gtp_chrg_char_f, { "Flat rate charging", "gtp.chrg_char_f", FT_UINT16, BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_F, "Flat rate charging", HFILL }}, + { &hf_gtp_chrg_char_h, { "Hot billing charging", "gtp.chrg_char_h", FT_UINT16, BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_H, "Hot billing charging", HFILL }}, + { &hf_gtp_chrg_char_r, { "Reserved", "gtp.chrg_char_r", FT_UINT16, BASE_DEC, NULL, GTP_MASK_CHRG_CHAR_R, "Reserved", HFILL }}, + { &hf_gtp_chrg_id, { "Charging ID", "gtp.chrg_id", FT_UINT32, BASE_HEX, NULL, 0, "Charging ID", HFILL }}, + { &hf_gtp_chrg_ipv4, { "CG address IPv4", "gtp.chrg_ipv4", FT_IPv4, BASE_DEC, NULL, 0, "Charging Gateway address IPv4", HFILL }}, + { &hf_gtp_chrg_ipv6, { "CG address IPv6", "gtp.chrg_ipv6", FT_IPv6, BASE_HEX, NULL, 0, "Charging Gateway address IPv6", HFILL }}, + { &hf_gtp_ext_flow_label, { "Flow Label Data I", "gtp.ext_flow_label", FT_UINT16, BASE_HEX, NULL, 0, "Flow label data", HFILL }}, + { &hf_gtp_ext_id, { "Extension identifier", "gtp.ext_id", FT_UINT16, BASE_DEC, NULL, 0, "Extension Identifier", HFILL }}, + { &hf_gtp_ext_val, { "Extension value", "gtp.ext_val", FT_STRING, BASE_DEC, NULL, 0, "Extension Value", HFILL }}, + { &hf_gtp_flags, { "Flags", "gtp.flags", FT_UINT8, BASE_HEX, NULL, 0, "Ver/PT/Spare...", HFILL }}, + { &hf_gtp_flags_ver, { "Version", "gtp.flags.version", FT_UINT8, BASE_DEC, VALS(ver_types), GTP_VER_MASK, "GTP Version", HFILL }}, + { &hf_gtp_flags_pt, { "Protocol type", "gtp.flags.payload", FT_UINT8, BASE_DEC, NULL, GTP_PT_MASK, "Protocol Type", HFILL }}, + { &hf_gtp_flags_spare1, { "Reserved", "gtp.flags.reserved", FT_UINT8, BASE_DEC, NULL, GTP_SPARE1_MASK, "Reserved (shall be sent as '111' )", HFILL }}, + { &hf_gtp_flags_snn, { "Is SNDCP N-PDU included?", "gtp.flags.snn", FT_BOOLEAN, 8, TFS(&yes_no_tfs), GTP_SNN_MASK, "Is SNDCP N-PDU LLC Number included? (1 = yes, 0 = no)", HFILL }}, + { &hf_gtp_flags_spare2, { "Reserved", "gtp.flags.reserved", FT_UINT8, BASE_DEC, NULL, GTP_SPARE2_MASK, "Reserved (shall be sent as '1' )", HFILL }}, + { &hf_gtp_flags_e, { "Is Next Extension Header present?", "gtp.flags.e", FT_BOOLEAN, 8, TFS(&yes_no_tfs), GTP_E_MASK, "Is Next Extension Header present? (1 = yes, 0 = no)", HFILL }}, + { &hf_gtp_flags_s, { "Is Sequence Number present?", "gtp.flags.s", FT_BOOLEAN, 8, TFS(&yes_no_tfs), GTP_S_MASK, "Is Sequence Number present? (1 = yes, 0 = no)", HFILL }}, + { &hf_gtp_flags_pn, { "Is N-PDU number present?", "gtp.flags.pn", FT_BOOLEAN, 8, TFS(&yes_no_tfs), GTP_PN_MASK, "Is N-PDU number present? (1 = yes, 0 = no)", HFILL }}, + { &hf_gtp_flow_ii, { "Flow Label Data II ", "gtp.flow_ii", FT_UINT16, BASE_DEC, NULL, 0, "Downlink flow label data", HFILL }}, + { &hf_gtp_flow_label, { "Flow label", "gtp.flow_label", FT_UINT16, BASE_HEX, NULL, 0, "Flow label", HFILL }}, + { &hf_gtp_flow_sig, { "Flow label Signalling", "gtp.flow_sig", FT_UINT16, BASE_HEX, NULL, 0, "Flow label signalling", HFILL }}, + { &hf_gtp_gsn_addr_len, { "GSN Address Length", "gtp.gsn_addr_len", FT_UINT8, BASE_DEC, NULL, GTP_EXT_GSN_ADDR_LEN_MASK, "GSN Address Length", HFILL }}, + { &hf_gtp_gsn_addr_type, { "GSN Address Type", "gtp.gsn_addr_type", FT_UINT8, BASE_DEC, VALS(gsn_addr_type), GTP_EXT_GSN_ADDR_TYPE_MASK, "GSN Address Type", HFILL }}, + { &hf_gtp_gsn_ipv4, { "GSN address IPv4", "gtp.gsn_ipv4", FT_IPv4, BASE_DEC, NULL, 0, "GSN address IPv4", HFILL }}, + { &hf_gtp_gsn_ipv6, { "GSN address IPv6", "gtp.gsn_ipv6", FT_IPv6, BASE_DEC, NULL, 0, "GSN address IPv6", HFILL }}, + { &hf_gtp_imsi, { "IMSI", "gtp.imsi", FT_STRING, BASE_DEC, NULL, 0, "International Mobile Subscriber Identity number", HFILL }}, + { &hf_gtp_length, { "Length", "gtp.length", FT_UINT16, BASE_DEC, NULL, 0, "Length (i.e. number of octets after TID or TEID)", HFILL }}, + { &hf_gtp_map_cause, { "MAP cause", "gtp.map_cause", FT_UINT8, BASE_DEC, VALS(map_cause_type), 0, "MAP cause", HFILL }}, + { &hf_gtp_message_type, { "Message Type", "gtp.message", FT_UINT8, BASE_HEX, VALS(message_type), 0x0, "GTP Message Type", HFILL }}, + { &hf_gtp_ms_reason, { "MS not reachable reason", "gtp.ms_reason", FT_UINT8, BASE_DEC, VALS(ms_not_reachable_type), 0, "MS Not Reachable Reason", HFILL }}, + { &hf_gtp_ms_valid, { "MS validated", "gtp.ms_valid", FT_BOOLEAN, BASE_NONE,NULL, 0, "MS validated", HFILL }}, + { &hf_gtp_msisdn, { "MSISDN", "gtp.msisdn", FT_STRING, BASE_DEC, NULL, 0, "MS international PSTN/ISDN number", HFILL }}, + { &hf_gtp_next, { "Next extension header type", "gtp.next", FT_UINT8, BASE_HEX, NULL, 0, "Next Extension Header Type", HFILL }}, + { &hf_gtp_node_ipv4, { "Node address IPv4", "gtp.node_ipv4", FT_IPv4, BASE_DEC, NULL, 0, "Recommended node address IPv4", HFILL }}, + { &hf_gtp_node_ipv6, { "Node address IPv6", "gtp.node_ipv6", FT_IPv6, BASE_HEX, NULL, 0, "Recommended node address IPv6", HFILL }}, + { &hf_gtp_npdu_number, { "N-PDU Number", "gtp.npdu_number", FT_UINT8, BASE_HEX, NULL, 0, "N-PDU Number", HFILL }}, + { &hf_gtp_nsapi, { "NSAPI", "gtp.nsapi", FT_UINT8, BASE_DEC, NULL, 0, "Network layer Service Access Point Identifier", HFILL }}, + { &hf_gtp_qos_spare1, { "Spare", "gtp.qos_spare1", FT_UINT8, BASE_DEC, NULL, GTP_EXT_QOS_SPARE1_MASK, "Spare (shall be sent as '00' )", HFILL }}, + { &hf_gtp_qos_delay, { "QoS delay", "gtp.qos_delay", FT_UINT8, BASE_DEC, VALS(qos_delay_type), GTP_EXT_QOS_DELAY_MASK, "Quality of Service Delay Class", HFILL }}, + { &hf_gtp_qos_reliability, { "QoS reliability", "gtp.qos_reliabilty", FT_UINT8, BASE_DEC, VALS(qos_reliability_type), GTP_EXT_QOS_RELIABILITY_MASK, "Quality of Service Reliability Class", HFILL }}, + { &hf_gtp_qos_peak, { "QoS peak", "gtp.qos_peak", FT_UINT8, BASE_DEC, VALS(qos_peak_type), GTP_EXT_QOS_PEAK_MASK, "Quality of Service Peak Throughput", HFILL }}, + { &hf_gtp_qos_spare2, { "Spare", "gtp.qos_spare2",FT_UINT8, BASE_DEC, NULL, GTP_EXT_QOS_SPARE2_MASK, "Spare (shall be sent as 0)", HFILL }}, + { &hf_gtp_qos_precedence, { "QoS precedence", "gtp.qos_precedence", FT_UINT8, BASE_DEC, VALS(qos_precedence_type), GTP_EXT_QOS_PRECEDENCE_MASK, "Quality of Service Precedence Class", HFILL }}, + { &hf_gtp_qos_spare3, { "Spare", "gtp.qos_spare3", FT_UINT8, BASE_DEC, NULL, GTP_EXT_QOS_SPARE3_MASK, "Spare (shall be sent as '000' )", HFILL }}, + { &hf_gtp_qos_mean, { "QoS mean", "gtp.qos_mean", FT_UINT8, BASE_DEC, VALS(qos_mean_type), GTP_EXT_QOS_MEAN_MASK, "Quality of Service Mean Throughput", HFILL }}, + { &hf_gtp_qos_al_ret_priority, { "Allocation/Retention priority ","gtp.qos_al_ret_priority", FT_UINT8, BASE_DEC, NULL, 0, "Allocation/Retention Priority", HFILL }}, + { &hf_gtp_qos_traf_class, { "Traffic class", "gtp.qos_traf_class", FT_UINT8, BASE_DEC, VALS(qos_traf_class), GTP_EXT_QOS_TRAF_CLASS_MASK, "Traffic Class", HFILL }}, + { &hf_gtp_qos_del_order, { "Delivery order", "gtp.qos_del_order", FT_UINT8, BASE_DEC, VALS(qos_del_order), GTP_EXT_QOS_DEL_ORDER_MASK, "Delivery Order", HFILL }}, + { &hf_gtp_qos_del_err_sdu, { "Delivery of erroneous SDU", "gtp.qos_del_err_sdu", FT_UINT8, BASE_DEC, VALS(qos_del_err_sdu), GTP_EXT_QOS_DEL_ERR_SDU_MASK, "Delivery of Erroneous SDU", HFILL }}, + { &hf_gtp_qos_max_sdu_size, { "Maximum SDU size", "gtp.qos_max_sdu_size", FT_UINT8, BASE_DEC, VALS(qos_max_sdu_size), 0, "Maximum SDU size", HFILL }}, + { &hf_gtp_qos_max_ul, { "Maximum bit rate for uplink", "gtp.qos_max_ul", FT_UINT8, BASE_DEC, VALS(qos_max_ul), 0, "Maximum bit rate for uplink", HFILL }}, + { &hf_gtp_qos_max_dl, { "Maximum bit rate for downlink", "gtp.qos_max_dl", FT_UINT8, BASE_DEC, VALS(qos_max_dl), 0, "Maximum bit rate for downlink", HFILL }}, + { &hf_gtp_qos_res_ber, { "Residual BER", "gtp.qos_res_ber", FT_UINT8, BASE_DEC, VALS(qos_res_ber), GTP_EXT_QOS_RES_BER_MASK, "Residual Bit Error Rate", HFILL }}, + { &hf_gtp_qos_sdu_err_ratio, { "SDU Error ratio", "gtp.qos_sdu_err_ratio", FT_UINT8, BASE_DEC, VALS(qos_sdu_err_ratio), GTP_EXT_QOS_SDU_ERR_RATIO_MASK, "SDU Error Ratio", HFILL }}, + { &hf_gtp_qos_trans_delay, { "Transfer delay", "gtp.qos_trans_delay", FT_UINT8, BASE_DEC, VALS(qos_trans_delay), GTP_EXT_QOS_TRANS_DELAY_MASK, "Transfer Delay", HFILL }}, + { &hf_gtp_qos_traf_handl_prio, { "Traffic handling priority", "gtp.qos_traf_handl_prio", FT_UINT8, BASE_DEC, VALS(qos_traf_handl_prio), GTP_EXT_QOS_TRAF_HANDL_PRIORITY_MASK, "Traffic Handling Priority", HFILL }}, + { &hf_gtp_qos_guar_ul, { "Guaranteed bit rate for uplink", "gtp.qos_guar_ul", FT_UINT8, BASE_DEC, VALS(qos_guar_ul), 0, "Guaranteed bit rate for uplink", HFILL }}, + { &hf_gtp_qos_guar_dl, { "Guaranteed bit rate for downlink", "gtp.qos_guar_dl", FT_UINT8, BASE_DEC, VALS(qos_guar_dl), 0, "Guaranteed bit rate for downlink", HFILL }}, + { &hf_gtp_pkt_flow_id, { "Packet Flow ID", "gtp.pkt_flow_id", FT_UINT8, BASE_DEC, NULL, 0, "Packet Flow ID", HFILL }}, + { &hf_gtp_ptmsi, { "P-TMSI", "gtp.ptmsi", FT_UINT32, BASE_HEX, NULL, 0, "Packet-Temporary Mobile Subscriber Identity", HFILL }}, + { &hf_gtp_ptmsi_sig, { "P-TMSI Signature", "gtp.ptmsi_sig", FT_UINT24, BASE_HEX, NULL, 0, "P-TMSI Signature", HFILL }}, + { &hf_gtp_rab_gtpu_dn, { "Downlink GTP-U seq number", "gtp.rab_gtp_dn", FT_UINT16, BASE_DEC, NULL, 0, "Downlink GTP-U sequence number", HFILL }}, + { &hf_gtp_rab_gtpu_up, { "Uplink GTP-U seq number", "gtp.rab_gtp_up", FT_UINT16, BASE_DEC, NULL, 0, "Uplink GTP-U sequence number", HFILL }}, + { &hf_gtp_rab_pdu_dn, { "Downlink next PDCP-PDU seq number", "gtp.rab_pdu_dn", FT_UINT8, BASE_DEC, NULL, 0, "Downlink next PDCP-PDU sequence number", HFILL }}, + { &hf_gtp_rab_pdu_up, { "Uplink next PDCP-PDU seq number", "gtp.rab_pdu_up", FT_UINT8, BASE_DEC, NULL, 0, "Uplink next PDCP-PDU sequence number", HFILL }}, + { &hf_gtp_rai_mcc, { "MCC", "gtp.mcc", FT_UINT16, BASE_DEC, NULL, 0, "Mobile Country Code", HFILL }}, + { &hf_gtp_rai_mnc, { "MNC", "gtp.mnc", FT_UINT8, BASE_DEC, NULL, 0, "Mobile Network Code", HFILL }}, + { &hf_gtp_rai_rac, { "RAC", "gtp.rac", FT_UINT8, BASE_DEC, NULL, 0, "Routing Area Code", HFILL }}, + { &hf_gtp_rai_lac, { "LAC", "gtp.lac", FT_UINT16, BASE_DEC, NULL, 0, "Location Area Code", HFILL }}, + { &hf_gtp_ranap_cause, { "RANAP cause", "gtp.ranap_cause", FT_UINT8, BASE_DEC, VALS(ranap_cause_type), 0, "RANAP cause", HFILL }}, + { &hf_gtp_recovery, { "Recovery", "gtp.recovery", FT_UINT8, BASE_DEC, NULL, 0, "Restart counter", HFILL }}, + { &hf_gtp_reorder, { "Reordering required","gtp.reorder", FT_BOOLEAN, BASE_NONE,NULL, 0, "Reordering required", HFILL }}, + { &hf_gtp_rnc_ipv4, { "RNC address IPv4", "gtp.rnc_ipv4", FT_IPv4, BASE_DEC, NULL, 0, "Radio Network Controller address IPv4", HFILL }}, + { &hf_gtp_rnc_ipv6, { "RNC address IPv6", "gtp.rnc_ipv6", FT_IPv6, BASE_HEX, NULL, 0, "Radio Network Controller address IPv6", HFILL }}, + { &hf_gtp_rp, { "Radio Priority", "gtp.rp", FT_UINT8, BASE_DEC, NULL, GTPv1_EXT_RP_MASK, "Radio Priority for uplink tx", HFILL }}, + { &hf_gtp_rp_nsapi, { "NSAPI in Radio Priority", "gtp.rp_nsapi", FT_UINT8, BASE_DEC, NULL, GTPv1_EXT_RP_NSAPI_MASK, "Network layer Service Access Point Identifier in Radio Priority", HFILL }}, + { &hf_gtp_rp_sms, { "Radio Priority SMS", "gtp.rp_sms", FT_UINT8, BASE_DEC, NULL, 0, "Radio Priority for MO SMS", HFILL }}, + { &hf_gtp_rp_spare, { "Reserved", "gtp.rp_spare", FT_UINT8, BASE_DEC, NULL, GTPv1_EXT_RP_SPARE_MASK, "Spare bit", HFILL }}, + { &hf_gtp_sel_mode, { "Selection mode", "gtp.sel_mode", FT_UINT8, BASE_DEC, VALS(sel_mode_type), 0, "Selection Mode", HFILL }}, + { &hf_gtp_seq_number, { "Sequence number", "gtp.seq_number", FT_UINT16, BASE_HEX, NULL, 0, "Sequence Number", HFILL }}, + { &hf_gtp_sndcp_number, { "SNDCP N-PDU LLC Number", "gtp.sndcp_number", FT_UINT8, BASE_HEX, NULL, 0, "SNDCP N-PDU LLC Number", HFILL }}, + { &hf_gtp_tear_ind, { "Teardown Indicator", "gtp.tear_ind", FT_BOOLEAN, BASE_NONE,NULL, 0, "Teardown Indicator", HFILL }}, + { &hf_gtp_teid, { "TEID", "gtp.teid", FT_UINT32, BASE_HEX, NULL, 0, "Tunnel Endpoint Identifier", HFILL }}, + { &hf_gtp_teid_cp, { "TEID Control Plane", "gtp.teid_cp", FT_UINT32, BASE_HEX, NULL, 0, "Tunnel Endpoint Identifier Control Plane", HFILL }}, + { &hf_gtp_teid_data, { "TEID Data I", "gtp.teid_data", FT_UINT32, BASE_HEX, NULL, 0, "Tunnel Endpoint Identifier Data I", HFILL }}, + { &hf_gtp_teid_ii, { "TEID Data II", "gtp.teid_ii", FT_UINT32, BASE_HEX, NULL, 0, "Tunnel Endpoint Identifier Data II", HFILL }}, + { &hf_gtp_tft_code, { "TFT operation code", "gtp.tft_code", FT_UINT8, BASE_DEC, VALS (tft_code_type), GTPv1_TFT_CODE_MASK, "TFT operation code", HFILL }}, + { &hf_gtp_tft_spare, { "TFT spare bit", "gtp.tft_spare", FT_UINT8, BASE_DEC, NULL, GTPv1_TFT_SPARE_MASK, "TFT spare bit", HFILL }}, + { &hf_gtp_tft_number, { "Number of packet filters", "gtp.tft_number", FT_UINT8, BASE_DEC, NULL, GTPv1_TFT_NUMBER_MASK, "Number of packet filters", HFILL }}, + { &hf_gtp_tft_eval, { "Evaluation precedence", "gtp.tft_eval", FT_UINT8, BASE_DEC, NULL, 0, "Evaluation precedence", HFILL }}, + { &hf_gtp_tid, { "TID", "gtp.tid", FT_STRING, BASE_DEC, NULL, 0, "Tunnel Identifier", HFILL }}, + { &hf_gtp_tlli, { "TLLI", "gtp.tlli", FT_UINT32, BASE_HEX, NULL, 0, "Temporary Logical Link Identity", HFILL }}, + { &hf_gtp_tr_comm, { "Packet transfer command", "gtp.tr_comm", FT_UINT8, BASE_DEC, VALS (tr_comm_type), 0, "Packat transfer command", HFILL }}, + { &hf_gtp_trace_ref, { "Trace reference", "gtp.trace_ref", FT_UINT16, BASE_HEX, NULL, 0, "Trace reference", HFILL }}, + { &hf_gtp_trace_type, { "Trace type", "gtp.trace_type", FT_UINT16, BASE_HEX, NULL, 0, "Trace type", HFILL }}, + { &hf_gtp_unknown, { "Unknown data (length)", "gtp.unknown", FT_UINT16, BASE_DEC, NULL, 0, "Unknown data", HFILL }}, + { &hf_gtp_user_addr_pdp_org, { "PDP type organization", "gtp.user_addr_pdp_org", FT_UINT8, BASE_DEC, VALS(pdp_org_type), 0, "PDP type organization", HFILL }}, + { &hf_gtp_user_addr_pdp_type, { "PDP type number", "gtp.user_addr_pdp_type", FT_UINT8, BASE_HEX, VALS (pdp_type), 0, "PDP type", HFILL }}, + { &hf_gtp_user_ipv4, { "End user address IPv4", "gtp.user_ipv4", FT_IPv4, BASE_DEC, NULL, 0, "End user address IPv4", HFILL }}, + { &hf_gtp_user_ipv6, { "End user address IPv6", "gtp.user_ipv6", FT_IPv6, BASE_HEX, NULL, 0, "End user address IPv6", HFILL }}, + }; + + static gint *ett_gtp_array[] = { + &ett_gtp, + &ett_gtp_flags, + &ett_gtp_ext, + &ett_gtp_rai, + &ett_gtp_qos, + &ett_gtp_auth_tri, + &ett_gtp_flow_ii, + &ett_gtp_rab_cntxt, + &ett_gtp_rp, + &ett_gtp_pkt_flow_id, + &ett_gtp_chrg_char, + &ett_gtp_user, + &ett_gtp_mm, + &ett_gtp_trip, + &ett_gtp_quint, + &ett_gtp_pdp, + &ett_gtp_apn, + &ett_gtp_proto, + &ett_gtp_gsn_addr, + &ett_gtp_tft, + &ett_gtp_tft_pf, + &ett_gtp_tft_flags, + &ett_gtp_rab_setup, + &ett_gtp_hdr_list, + &ett_gtp_chrg_addr, + &ett_gtp_node_addr, + &ett_gtp_rel_pack, + &ett_gtp_can_pack, + &ett_gtp_data_resp, + &ett_gtp_priv_ext, + }; + + module_t *gtp_module; + + proto_gtp = proto_register_protocol ("GPRS Tunneling Protocol", "GTP", "gtp"); + proto_register_field_array (proto_gtp, hf_gtp, array_length (hf_gtp)); + proto_register_subtree_array (ett_gtp_array, array_length (ett_gtp_array)); + + gtp_module = prefs_register_protocol(proto_gtp, proto_reg_handoff_gtp); + + prefs_register_uint_preference(gtp_module, "v0_port", "GTPv0 port", "GTPv0 port (default 3386)", 10, &g_gtpv0_port); + prefs_register_uint_preference(gtp_module, "v1c_port", "GTPv1 control plane (GTP-C) port", "GTPv1 control plane port (default 2123)", 10, &g_gtpv1c_port); + prefs_register_uint_preference(gtp_module, "v1u_port", "GTPv1 user plane (GTP-U) port", "GTPv1 user plane port (default 2152)", 10, &g_gtpv1u_port); + prefs_register_bool_preference(gtp_module, "dissect_tpdu", "Dissect T-PDU", "Dissect T-PDU", >p_tpdu); + prefs_register_obsolete_preference (gtp_module, "v0_dissect_cdr_as"); + prefs_register_obsolete_preference (gtp_module, "v0_check_etsi"); + prefs_register_obsolete_preference (gtp_module, "v1_check_etsi"); + prefs_register_bool_preference (gtp_module, "check_etsi", "Compare GTP order with ETSI", "GTP ETSI order", >p_etsi_order); + prefs_register_obsolete_preference(gtp_module, "ppp_reorder"); + + register_dissector("gtp", dissect_gtp, proto_gtp); +} + +void +proto_reg_handoff_gtp(void) +{ + static int Initialized = FALSE; + static dissector_handle_t gtp_handle; + + if (!Initialized) { + gtp_handle = find_dissector("gtp"); + ppp_subdissector_table = find_dissector_table("ppp.protocol"); + Initialized = TRUE; + } else { + dissector_delete ("udp.port", gtpv0_port, gtp_handle); + dissector_delete ("tcp.port", gtpv0_port, gtp_handle); + dissector_delete ("udp.port", gtpv1c_port, gtp_handle); + dissector_delete ("tcp.port", gtpv1c_port, gtp_handle); + dissector_delete ("udp.port", gtpv1u_port, gtp_handle); + dissector_delete ("tcp.port", gtpv1u_port, gtp_handle); + } + + gtpv0_port = g_gtpv0_port; + gtpv1c_port = g_gtpv1c_port; + gtpv1u_port = g_gtpv1u_port; + + dissector_add ("udp.port", g_gtpv0_port, gtp_handle); + dissector_add ("tcp.port", g_gtpv0_port, gtp_handle); + dissector_add ("udp.port", g_gtpv1c_port, gtp_handle); + dissector_add ("tcp.port", g_gtpv1c_port, gtp_handle); + dissector_add ("udp.port", g_gtpv1u_port, gtp_handle); + dissector_add ("tcp.port", g_gtpv1u_port, gtp_handle); + + ip_handle = find_dissector("ip"); + ipv6_handle = find_dissector("ipv6"); + ppp_handle = find_dissector("ppp"); + data_handle = find_dissector("data"); + gtpcdr_handle = find_dissector("gtpcdr"); +} |