/* $OpenBSD: print-gtp.c,v 1.13 2020/10/26 23:19:18 jca Exp $ */ /* * Copyright (c) 2009, 2010 Joel Sing * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /* * Decoder for the GPRS Trunking Protocol (GTP). * * This work has been kindly sponsored by SystemNet (www.systemnet.no). * * GTPv0 standards are available from the ETSI website: * * http://pda.etsi.org/pda/ * * GTPv1 standards are available from the 3GPP website: * * http://www.3gpp.org/specifications * * The following standards have been referenced to create this decoder: * * ETSI GSM 09.60 - GPRS Tunnelling Protocol (GTPv0) * ETSI GSM 12.15 - GPRS Charging (GTPv0') * * 3GPP TS 23.003 - Numbering, addressing and identification * 3GPP TS 24.008 - Core network protocols * 3GPP TS 29.002 - Mobile Application Part (MAP) specification * 3GPP TS 29.060 - GPRS Tunnelling Protocol (GTPv1-C/GTPv1-U) * 3GPP TS 32.295 - Charging Data Record (CDR) transfer (GTPv1') */ #include #include #include #include #include #include #include #include #include #include #include "addrtoname.h" #include "interface.h" #include "gtp.h" #ifndef nitems #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0])) #endif void gtp_print(const u_char *, u_int, u_short, u_short); void gtp_decode_ie(const u_char *, u_short, int); void gtp_print_tbcd(const u_char *, u_int); void gtp_print_user_address(const u_char *, u_int); void gtp_print_apn(const u_char *, u_int); void gtp_print_str(const char **, u_int, u_int); void gtp_v0_print(const u_char *, u_int, u_short, u_short); void gtp_v0_print_prime(const u_char *); int gtp_v0_print_tv(const u_char *, u_int); int gtp_v0_print_tlv(const u_char *, u_int); void gtp_v1_print(const u_char *, u_int, u_short, u_short); void gtp_v1_print_ctrl(const u_char *, u_int, struct gtp_v1_hdr *); void gtp_v1_print_user(const u_char *, u_int, struct gtp_v1_hdr *); void gtp_v1_print_prime(const u_char *, struct gtp_v1_prime_hdr *); int gtp_v1_print_tv(const u_char *, u_int); int gtp_v1_print_tlv(const u_char *, u_int); /* GTPv0 message types. */ static struct tok gtp_v0_msgtype[] = { { 1, "Echo Request" }, { 2, "Echo Response" }, { 3, "Version Not Supported" }, { 4, "Node Alive Request" }, { 5, "Node Alive Response" }, { 6, "Redirection Request" }, { 7, "Redirection Response" }, { 16, "Create PDP Context Request" }, { 17, "Create PDP Context Response" }, { 18, "Update PDP Context Request" }, { 19, "Update PDP Context Response" }, { 20, "Delete PDP Context Request" }, { 21, "Delete PDP Context Response" }, { 22, "Create AA PDP Context Request" }, { 23, "Create AA PDP Context Response" }, { 24, "Delete AA PDP Context Request" }, { 25, "Delete AA PDP Context Response" }, { 26, "Error Indication" }, { 27, "PDU Notification Request" }, { 28, "PDU Notification Response" }, { 29, "PDU Notification Reject Request" }, { 30, "PDU Notification Reject Response" }, { 32, "Send Routeing Information Request" }, { 33, "Send Routeing Information Response" }, { 34, "Failure Report Request" }, { 35, "Failure Report Response" }, { 36, "MS GPRS Present Request" }, { 37, "MS GPRS Present Response" }, { 48, "Identification Request" }, { 49, "Identification Response" }, { 50, "SGSN Context Request" }, { 51, "SGSN Context Response" }, { 52, "SGSN Context Acknowledge" }, { 240, "Data Record Transfer Request" }, { 241, "Data Record Transfer Response" }, { 255, "T-PDU" }, { 0, NULL } }; /* GTPv0 causes. */ static struct tok gtp_v0_cause[] = { { 0, "Request IMSI" }, { 1, "Request IMEI" }, { 2, "Request IMSI and IMEI" }, { 3, "No identity needed" }, { 4, "MS refuses" }, { 5, "MS is not GPRS responding" }, { 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 resources 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" }, { 0, NULL } }; /* GTPv1 message types. */ static struct tok gtp_v1_msgtype[] = { { 1, "Echo Request" }, { 2, "Echo Response" }, { 3, "Version Not Supported" }, { 4, "Node Alive Request" }, { 5, "Node Alive Response" }, { 6, "Redirection Request" }, { 7, "Redirection Response" }, { 16, "Create PDP Context Request" }, { 17, "Create PDP Context Response" }, { 18, "Update PDP Context Request" }, { 19, "Update PDP Context Response" }, { 20, "Delete PDP Context Request" }, { 21, "Delete PDP Context Response" }, { 22, "Initiate PDP Context Activiation Request" }, { 23, "Initiate PDP Context Activiation Response" }, { 26, "Error Indication" }, { 27, "PDU Notification Request" }, { 28, "PDU Notification Response" }, { 29, "PDU Notification Reject Request" }, { 30, "PDU Notification Reject Response" }, { 31, "Supported Extension Headers Notification" }, { 32, "Send Routeing Information for GPRS Request" }, { 33, "Send Routeing Information for GPRS Response" }, { 34, "Failure Report Request" }, { 35, "Failure Report Response" }, { 36, "Note MS GPRS Present Request" }, { 37, "Note MS GPRS Present Response" }, { 48, "Identification Request" }, { 49, "Identification Response" }, { 50, "SGSN Context Request" }, { 51, "SGSN Context Response" }, { 52, "SGSN Context Acknowledge" }, { 53, "Forward Relocation Request" }, { 54, "Forward Relocation Response" }, { 55, "Forward Relocation Complete" }, { 56, "Relocation Cancel Request" }, { 57, "Relocation Cancel Response" }, { 58, "Forward SRNS Context" }, { 59, "Forward Relocation Complete Acknowledge" }, { 60, "Forward SRNS Context Acknowledge" }, { 70, "RAN Information Relay" }, { 96, "MBMS Notification Request" }, { 97, "MBMS Notification Response" }, { 98, "MBMS Notification Reject Request" }, { 99, "MBMS Notification Reject Response" }, { 100, "Create MBMS Context Request" }, { 101, "Create MBMS Context Response" }, { 102, "Update MBMS Context Request" }, { 103, "Update MBMS Context Response" }, { 104, "Delete MBMS Context Request" }, { 105, "Delete MBMS Context Response" }, { 112, "MBMS Registration Request" }, { 113, "MBMS Registration Response" }, { 114, "MBMS De-Registration Request" }, { 115, "MBMS De-Registration Response" }, { 116, "MBMS Session Start Request" }, { 117, "MBMS Session Start Response" }, { 118, "MBMS Session Stop Request" }, { 119, "MBMS Session Stop Response" }, { 120, "MBMS Session Update Request" }, { 121, "MBMS Session Update Response" }, { 128, "MBMS Info Change Notification Request" }, { 129, "MBMS Info Change Notification Response" }, { 240, "Data Record Transfer Request" }, { 241, "Data Record Transfer Response" }, { 255, "G-PDU" }, { 0, NULL } }; /* GTPv1 Causes. */ static struct tok gtp_v1_cause[] = { /* GTPv1-C. */ { 0, "Request IMSI" }, { 1, "Request IMEI" }, { 2, "Request IMSI and IMEI" }, { 3, "No identity needed" }, { 4, "MS refuses" }, { 5, "MS is not GPRS responding" }, { 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 resources 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 dynamic PDP 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" }, { 221, "PDP context without TFT already activated" }, { 222, "APN access denied - no subscription" }, { 223, "APN restriction type incompatibility with currently " "active PDP contexts" }, { 224, "MS MBMS capabilities insufficient" }, { 225, "Invalid correlation-ID" }, { 226, "MBMS bearer context superseded" }, /* GTP'v1. */ { 59, "System failure" }, { 60, "The transmit buffers are becoming full" }, { 61, "The receive buffers are becoming full" }, { 62, "Another node is about to go down" }, { 63, "This node is about to go down" }, { 177, "CDR decoding error" }, { 252, "Request related to possibly duplicated packets already " "fulfilled" }, { 253, "Request already fulfilled" }, { 254, "Sequence numbers of released/cancelled packets IE incorrect" }, { 255, "Request not fulfilled" }, { 0, NULL } }; static int gtp_proto = -1; void gtp_print(const u_char *cp, u_int length, u_short sport, u_short dport) { int version; /* Decode GTP version. */ TCHECK(cp[0]); version = cp[0] >> GTP_VERSION_SHIFT; if (version == GTP_VERSION_0) gtp_v0_print(cp, length, sport, dport); else if (version == GTP_VERSION_1) gtp_v1_print(cp, length, sport, dport); else printf("GTP (version %i)", version); return; trunc: printf("[|GTP]"); } /* * Decode and print information elements from message. The actual work is * handled in the appropriate Tag/Value (TV) or Tag/Length/Value (TLV) * decoding routine. */ void gtp_decode_ie(const u_char *cp, u_short version, int len) { int val, ielen, iecount = 0; if (len <= 0) return; printf(" {"); while (len > 0) { iecount++; if (iecount > 1) printf(" "); TCHECK(cp[0]); val = (u_int)cp[0]; cp++; printf("["); switch (version) { case GTP_VERSION_0: if ((val & GTPV0_IE_TYPE_MASK) == 0) ielen = gtp_v0_print_tv(cp, val); else ielen = gtp_v0_print_tlv(cp, val); break; case GTP_VERSION_1: if ((val & GTPV1_IE_TYPE_MASK) == 0) ielen = gtp_v1_print_tv(cp, val); else ielen = gtp_v1_print_tlv(cp, val); break; default: /* Version not supported... */ ielen = -1; break; } printf("]"); if (ielen < 0) goto trunc; len -= ielen; cp += ielen - 1; } if (iecount > 0) printf("}"); return; trunc: printf(" [|%s]", tok2str(gtp_type, "GTP", gtp_proto)); } /* * Decode and print telephony binary coded decimal. */ void gtp_print_tbcd(const u_char *cp, u_int len) { u_int8_t *data, bcd; int i; data = (u_int8_t *)cp; for (i = 0; i < len; i++) { bcd = *data & 0xf; if (bcd != 0xf) printf("%u", bcd); bcd = *data >> 4; if (bcd != 0xf) printf("%u", bcd); data++; } } /* * Decode and print an end user address. Format is detailed in * GSM 09.60 section 7.9.18 and 3GPP 29.060 section 7.7.27. */ void gtp_print_user_address(const u_char *cp, u_int len) { u_int8_t org, type; if (len < 2) return; org = (u_int8_t)cp[0] & 0xf; type = (u_int8_t)cp[1]; cp += 2; if (org == 0x0 && type == 0x1) printf(": PPP"); else if (org == 0x1 && type == 0x21) { if (len == 6) printf(": %s", ipaddr_string(cp)); else printf(": IPv4"); } else if (org == 0x1 && type == 0x57) { if (len == 18) printf(": %s", ip6addr_string(cp)); else printf(": IPv6"); } else printf(" (org 0x%x, type 0x%x)", org, type); } /* * Decode and print an Access Point Name. Format is detailed in * 3GPP 24.008 section 10.5.6.1 and 3GPP 23.003 section 9.1. */ void gtp_print_apn(const u_char *cp, u_int len) { u_char label[100]; u_int8_t llen; if (len < 1 || len > 100) return; while (len > 0) { llen = (u_int8_t)cp[0]; if (llen > 99) return; bcopy(cp + 1, label, llen); label[llen] = '\0'; printf("%s", label); cp += llen + 1; len -= llen + 1; if (len > 0) printf("."); } } /* Print string from array. */ void gtp_print_str(const char **strs, u_int bound, u_int index) { if (index >= bound) printf(": %u", index); else if (strs[index] != NULL) printf(": %s", strs[index]); } /* * Decoding routines for GTP version 0. */ void gtp_v0_print(const u_char *cp, u_int length, u_short sport, u_short dport) { struct gtp_v0_hdr *gh = (struct gtp_v0_hdr *)cp; int len, version; u_int64_t tid; gtp_proto = GTP_V0_PROTO; /* Check if this is GTP prime. */ TCHECK(gh->flags); if ((gh->flags & GTPV0_HDR_PROTO_TYPE) == 0) { gtp_proto = GTP_V0_PRIME_PROTO; gtp_v0_print_prime(cp); return; } /* Print GTP header. */ TCHECK(*gh); cp += sizeof(struct gtp_v0_hdr); len = ntohs(gh->length); bcopy(&gh->tid, &tid, sizeof(tid)); printf("GTPv0 (len %u, seqno %u, flow %u, N-PDU %u, tid 0x%llx) ", ntohs(gh->length), ntohs(gh->seqno), ntohs(gh->flow), ntohs(gh->npduno), betoh64(tid)); /* Decode GTP message. */ printf("%s", tok2str(gtp_v0_msgtype, "Message Type %u", gh->msgtype)); if (!vflag) return; if (gh->msgtype == GTPV0_T_PDU) { TCHECK(cp[0]); version = cp[0] >> 4; printf(" { "); if (version == 4) ip_print(cp, len); else if (version == 6) ip6_print(cp, len); else printf("Unknown IP version %u", version); printf(" }"); } else gtp_decode_ie(cp, GTP_VERSION_0, len); return; trunc: printf(" [|%s]", tok2str(gtp_type, "GTP", gtp_proto)); } void gtp_v0_print_prime(const u_char *cp) { struct gtp_v0_prime_hdr *gph = (struct gtp_v0_prime_hdr *)cp; int len; /* Decode GTP prime header. */ TCHECK(*gph); cp += sizeof(*gph); len = ntohs(gph->length); printf("GTPv0' (len %u, seq %u) ", len, ntohs(gph->seqno)); /* Decode GTP message. */ printf("%s", tok2str(gtp_v0_msgtype, "Message Type %u", gph->msgtype)); if (vflag) gtp_decode_ie(cp, GTP_VERSION_0, len); return; trunc: printf(" [|%s]", tok2str(gtp_type, "GTP", gtp_proto)); } int gtp_v0_print_tv(const u_char *cp, u_int value) { u_int32_t *dpl; u_int16_t *dps; u_int8_t data; int ielen = -1; switch (value) { case GTPV0_TV_CAUSE: /* 09.60 7.9.1 - Cause. */ TCHECK(cp[0]); data = (u_int8_t)cp[0]; ielen = GTPV0_TV_CAUSE_LENGTH; printf("Cause: %s", tok2str(gtp_v0_cause, "#%u", data)); break; case GTPV0_TV_IMSI: /* 09.60 7.9.2 - International Mobile Subscriber Identity. */ TCHECK2(cp[0], GTPV0_TV_IMSI_LENGTH - 1); printf("IMSI "); gtp_print_tbcd(cp, GTPV0_TV_IMSI_LENGTH - 1); ielen = GTPV0_TV_IMSI_LENGTH; break; case GTPV0_TV_RAI: /* 09.60 7.9.3 - Routing Area Identity (RAI). */ TCHECK2(cp[0], GTPV0_TV_RAI_LENGTH - 1); printf("RAI: MCC "); data = cp[1] | 0xf0; gtp_print_tbcd(cp, 1); gtp_print_tbcd(&data, 1); printf(", MNC "); data = (cp[1] >> 4) | 0xf0; gtp_print_tbcd(cp + 2, 1); gtp_print_tbcd(&data, 1); printf(", LAC 0x%x%x", cp[3], cp[4]); printf(", RAC 0x%x", cp[5]); ielen = GTPV0_TV_RAI_LENGTH; break; case GTPV0_TV_TLLI: /* 09.60 7.9.4 - Temporary Logical Link Identity (TLLI). */ TCHECK2(cp[0], GTPV0_TV_TLLI_LENGTH - 1); dpl = (u_int32_t *)cp; printf("TLLI 0x%x", ntohl(*dpl)); ielen = GTPV0_TV_TLLI_LENGTH; break; case GTPV0_TV_PTMSI: /* 09.60 7.9.5 - Packet TMSI (P-TMSI). */ TCHECK2(cp[0], GTPV0_TV_PTMSI_LENGTH - 1); dpl = (u_int32_t *)cp; printf("P-TMSI 0x%x", ntohl(*dpl)); ielen = GTPV0_TV_PTMSI_LENGTH; break; case GTPV0_TV_QOS: /* 09.60 7.9.6 - Quality of Service (QoS) Profile. */ TCHECK2(cp[0], GTPV0_TV_QOS_LENGTH - 1); printf("QoS Profile"); /* XXX */ ielen = GTPV0_TV_QOS_LENGTH; break; case GTPV0_TV_REORDER: /* 09.60 7.9.7 - Reordering Required. */ TCHECK2(cp[0], GTPV0_TV_REORDER_LENGTH - 1); printf("Reordering Required: "); if (cp[0] & 0x1) printf("yes"); else printf("no"); ielen = GTPV0_TV_REORDER_LENGTH; break; case GTPV0_TV_AUTH_TRIPLET: /* 09.60 7.9.8 - Authentication Triplet. */ TCHECK2(cp[0], GTPV0_TV_AUTH_TRIPLET_LENGTH - 1); printf("Authentication"); /* XXX */ ielen = GTPV0_TV_AUTH_TRIPLET_LENGTH; break; case GTPV0_TV_MAP_CAUSE: /* 09.60 7.9.9 - MAP Cause. */ TCHECK2(cp[0], GTPV0_TV_MAP_CAUSE_LENGTH - 1); printf("MAP Cause: %u", cp[0]); ielen = GTPV0_TV_MAP_CAUSE_LENGTH; break; case GTPV0_TV_PTMSI_SIGNATURE: /* 09.60 7.9.10 - P-TMSI Signature. */ /* Signature defined in GSM 04.08. */ TCHECK2(cp[0], GTPV0_TV_PTMSI_SIGNATURE_LENGTH - 1); printf("PTMSI Signature: 0x%x%x%x", cp[0], cp[1], cp[2]); ielen = GTPV0_TV_PTMSI_SIGNATURE_LENGTH; break; case GTPV0_TV_MS_VALIDATED: /* 09.60 7.9.11 - MS Validated. */ TCHECK2(cp[0], GTPV0_TV_MS_VALIDATED_LENGTH - 1); printf("MS Validated"); if (cp[0] & 0x1) printf("yes"); else printf("no"); ielen = GTPV0_TV_MS_VALIDATED_LENGTH; break; case GTPV0_TV_RECOVERY: /* 09.60 7.9.12 - Recovery. */ TCHECK2(cp[0], GTPV0_TV_RECOVERY_LENGTH - 1); printf("Recovery: Restart counter %u", cp[0]); ielen = GTPV0_TV_RECOVERY_LENGTH; break; case GTPV0_TV_SELECTION_MODE: /* 09.60 7.9.13 - Selection Mode. */ TCHECK2(cp[0], GTPV0_TV_SELECTION_MODE_LENGTH - 1); printf("Selection Mode"); /* XXX */ ielen = GTPV0_TV_SELECTION_MODE_LENGTH; break; case GTPV0_TV_FLOW_LABEL_DATA_I: /* 09.60 7.9.14 - Flow Label Data I. */ TCHECK2(cp[0], GTPV0_TV_FLOW_LABEL_DATA_I_LENGTH - 1); dps = (u_int16_t *)cp; printf("Flow Label Data I: %u", ntohs(*dps)); ielen = GTPV0_TV_FLOW_LABEL_DATA_I_LENGTH; break; case GTPV0_TV_FLOW_LABEL_SIGNALLING: /* 09.60 7.9.15 - Flow Label Signalling. */ TCHECK2(cp[0], GTPV0_TV_FLOW_LABEL_SIGNALLING_LENGTH - 1); dps = (u_int16_t *)cp; printf("Flow Label Signalling: %u", ntohs(*dps)); ielen = GTPV0_TV_FLOW_LABEL_SIGNALLING_LENGTH; break; case GTPV0_TV_FLOW_LABEL_DATA_II: /* 09.60 7.9.16 - Flow Label Data II. */ TCHECK2(cp[0], GTPV0_TV_FLOW_LABEL_DATA_II_LENGTH - 1); data = cp[0] & 0xf; dps = (u_int16_t *)(cp + 1); printf("Flow Label Data II: %u, NSAPI %u", ntohs(*dps), data); ielen = GTPV0_TV_FLOW_LABEL_DATA_II_LENGTH; break; case GTPV0_TV_PACKET_XFER_CMD: /* 12.15 7.3.4.5.3 - Packet Transfer Command. */ TCHECK2(cp[0], GTPV0_TV_PACKET_XFER_CMD_LENGTH - 1); printf("Packet Transfer Command"); gtp_print_str(gtp_packet_xfer_cmd, nitems(gtp_packet_xfer_cmd), cp[0]); ielen = GTPV0_TV_PACKET_XFER_CMD_LENGTH; break; case GTPV0_TV_CHARGING_ID: /* 09.60 7.9.17 - Charging ID. */ TCHECK2(cp[0], GTPV0_TV_CHARGING_ID_LENGTH - 1); dps = (u_int16_t *)cp; printf("Charging ID: %u", ntohs(*dps)); ielen = GTPV0_TV_CHARGING_ID_LENGTH; break; default: printf("TV %u", value); } trunc: return ielen; } int gtp_v0_print_tlv(const u_char *cp, u_int value) { u_int8_t data; u_int16_t *lenp, *seqno, len; int ielen = -1; /* Get length of IE. */ TCHECK2(cp[0], 2); lenp = (u_int16_t *)cp; cp += 2; len = ntohs(*lenp); TCHECK2(cp[0], len); ielen = sizeof(data) + sizeof(len) + len; switch (value) { case GTPV0_TLV_END_USER_ADDRESS: /* 09.60 7.9.18 - End User Address. */ printf("End User Address"); gtp_print_user_address(cp, len); break; case GTPV0_TLV_MM_CONTEXT: /* 09.60 7.9.19 - MM Context. */ printf("MM Context"); /* XXX */ break; case GTPV0_TLV_PDP_CONTEXT: /* 09.60 7.9.20 - PDP Context. */ printf("PDP Context"); /* XXX */ break; case GTPV0_TLV_ACCESS_POINT_NAME: /* 09.60 7.9.21 - Access Point Name. */ printf("AP Name: "); gtp_print_apn(cp, len); break; case GTPV0_TLV_PROTOCOL_CONFIG_OPTIONS: /* 09.60 7.9.22 - Protocol Configuration Options. */ printf("Protocol Configuration Options"); /* XXX */ break; case GTPV0_TLV_GSN_ADDRESS: /* 09.60 7.9.23 - GSN Address. */ printf("GSN Address"); if (len == 4) printf(": %s", ipaddr_string(cp)); else if (len == 16) printf(": %s", ip6addr_string(cp)); break; case GTPV0_TLV_MS_ISDN: /* 09.60 7.9.24 - MS International PSTN/ISDN Number. */ printf("MSISDN "); data = (u_int8_t)cp[0]; /* XXX - Number type. */ gtp_print_tbcd(cp + 1, len - 1); break; case GTPV0_TLV_CHARGING_GATEWAY_ADDRESS: /* 09.60 7.9.25 - Charging Gateway Address. */ printf("Charging Gateway"); if (len == 4) printf(": %s", ipaddr_string(cp)); break; case GTPV0_TLV_DATA_RECORD_PACKET: /* 12.15 7.3.4.5.4 - Data Record Packet. */ printf("Data Record: Records %u, Format %u, Format Version %u", cp[0], cp[1], ntohs(*(u_int16_t *)(cp + 2))); break; case GTPV0_TLV_REQUESTS_RESPONDED: /* 12.15 7.3.4.6 - Requests Responded. */ printf("Requests Responded:"); seqno = (u_int16_t *)cp; while (len > 0) { printf(" %u", ntohs(*seqno)); seqno++; len -= sizeof(*seqno); } break; case GTPV0_TLV_RECOMMENDED_NODE: /* 12.15 7.3.4.3 - Address of Recommended Node. */ printf("Recommended Node"); if (len == 4) printf(": %s", ipaddr_string(cp)); else if (len == 16) printf(": %s", ip6addr_string(cp)); break; case GTPV0_TLV_PRIVATE_EXTENSION: printf("Private Extension"); break; default: printf("TLV %u (len %u)", value, len); } return ielen; trunc: return -1; } /* * Decoding for GTP version 1, which consists of GTPv1-C, GTPv1-U and GTPv1'. */ void gtp_v1_print(const u_char *cp, u_int length, u_short sport, u_short dport) { struct gtp_v1_hdr *gh = (struct gtp_v1_hdr *)cp; struct gtp_v1_hdr_ext *ghe = NULL; int nexthdr, hlen; u_char *p = (u_char *)cp; TCHECK(gh->flags); if ((gh->flags & GTPV1_HDR_PROTO_TYPE) == 0) { gtp_proto = GTP_V1_PRIME_PROTO; printf(" GTPv1'"); gtp_v1_print_prime(p, (struct gtp_v1_prime_hdr *)gh); return; } if (dport == GTPV1_C_PORT || sport == GTPV1_C_PORT) { gtp_proto = GTP_V1_CTRL_PROTO; printf(" GTPv1-C"); } else if (dport == GTPV1_U_PORT || sport == GTPV1_U_PORT) { gtp_proto = GTP_V1_USER_PROTO; printf(" GTPv1-U"); } else if (dport == GTPV1_PRIME_PORT || sport == GTPV1_PRIME_PORT) { gtp_proto = GTP_V1_PRIME_PROTO; printf(" GTPv1'"); } /* Decode GTP header. */ TCHECK(*gh); p += sizeof(struct gtp_v1_hdr); printf(" (teid %u, len %u)", ntohl(gh->teid), ntohs(gh->length)); if (gh->flags & GTPV1_HDR_EXT) { ghe = (struct gtp_v1_hdr_ext *)cp; TCHECK(*ghe); p += sizeof(struct gtp_v1_hdr_ext) - sizeof(struct gtp_v1_hdr); } if (gh->flags & GTPV1_HDR_SN_FLAG) printf(" [seq %u]", ntohs(ghe->seqno)); if (gh->flags & GTPV1_HDR_NPDU_FLAG) printf(" [N-PDU %u]", ghe->npduno); if (gh->flags & GTPV1_HDR_EH_FLAG) { /* Process next header... */ nexthdr = ghe->nexthdr; while (nexthdr != GTPV1_EH_NONE) { /* Header length is a 4 octet multiplier. */ hlen = (int)p[0] * 4; if (hlen == 0) { printf(" [Invalid zero-length header %u]", nexthdr); goto trunc; } TCHECK2(p[0], hlen); switch (nexthdr) { case GTPV1_EH_MBMS_SUPPORT: printf(" [MBMS Support]"); break; case GTPV1_EH_MSI_CHANGE_RPT: printf(" [MS Info Change Reporting]"); break; case GTPV1_EH_PDCP_PDU_NO: printf(" [PDCP PDU %u]", ntohs(*(u_int16_t *)(p + 1))); break; case GTPV1_EH_SUSPEND_REQUEST: printf(" [Suspend Request]"); break; case GTPV1_EH_SUSPEND_RESPONSE: printf(" [Suspend Response]"); break; default: printf(" [Unknown Header %u]", nexthdr); } p += hlen - 1; nexthdr = (int)p[0]; p++; } } hlen = p - cp; if (dport == GTPV1_C_PORT || sport == GTPV1_C_PORT) gtp_v1_print_ctrl(p, hlen, gh); else if (dport == GTPV1_U_PORT || sport == GTPV1_U_PORT) gtp_v1_print_user(p, hlen, gh); return; trunc: printf(" [|%s]", tok2str(gtp_type, "GTP", gtp_proto)); } void gtp_v1_print_ctrl(const u_char *cp, u_int hlen, struct gtp_v1_hdr *gh) { int len; /* Decode GTP control message. */ printf(" %s", tok2str(gtp_v1_msgtype, "Message Type %u", gh->msgtype)); len = ntohs(gh->length) - hlen + sizeof(*gh); if (vflag) gtp_decode_ie(cp, GTP_VERSION_1, len); } void gtp_v1_print_user(const u_char *cp, u_int hlen, struct gtp_v1_hdr *gh) { int len, version; /* Decode GTP user message. */ printf(" %s", tok2str(gtp_v1_msgtype, "Message Type %u", gh->msgtype)); if (!vflag) return; len = ntohs(gh->length) - hlen + sizeof(*gh); if (gh->msgtype == GTPV1_G_PDU) { TCHECK(cp[0]); version = cp[0] >> 4; printf(" { "); if (version == 4) ip_print(cp, len); else if (version == 6) ip6_print(cp, len); else printf("Unknown IP version %u", version); printf(" }"); } else gtp_decode_ie(cp, GTP_VERSION_1, len); return; trunc: printf(" [|%s]", tok2str(gtp_type, "GTP", gtp_proto)); } void gtp_v1_print_prime(const u_char *cp, struct gtp_v1_prime_hdr *gph) { int len; /* Decode GTP prime header. */ TCHECK(*gph); cp += sizeof(struct gtp_v1_prime_hdr); len = ntohs(gph->length); printf(" (len %u, seq %u) ", len, ntohs(gph->seqno)); /* Decode GTP message. */ printf("%s", tok2str(gtp_v1_msgtype, "Message Type %u", gph->msgtype)); if (vflag) gtp_decode_ie(cp, GTP_VERSION_1, len); return; trunc: printf(" [|%s]", tok2str(gtp_type, "GTP", gtp_proto)); } int gtp_v1_print_tv(const u_char *cp, u_int value) { u_int32_t *dpl; u_int16_t *dps; u_int8_t data; int ielen = -1; switch (value) { case GTPV1_TV_CAUSE: /* 29.060 - 7.7.1 Cause. */ TCHECK(cp[0]); data = (u_int8_t)cp[0]; ielen = GTPV1_TV_CAUSE_LENGTH; printf("Cause: %s", tok2str(gtp_v1_cause, "#%u", data)); break; case GTPV1_TV_IMSI: /* 29.060 7.7.2 - International Mobile Subscriber Identity. */ TCHECK2(cp[0], GTPV1_TV_IMSI_LENGTH - 1); printf("IMSI "); gtp_print_tbcd(cp, GTPV1_TV_IMSI_LENGTH - 1); ielen = GTPV1_TV_IMSI_LENGTH; break; case GTPV1_TV_RAI: /* 29.060 7.7.3 - Routing Area Identity (RAI). */ TCHECK2(cp[0], GTPV1_TV_RAI_LENGTH - 1); printf("RAI: MCC "); data = cp[1] | 0xf0; gtp_print_tbcd(cp, 1); gtp_print_tbcd(&data, 1); printf(", MNC "); data = (cp[1] >> 4) | 0xf0; gtp_print_tbcd(cp + 2, 1); gtp_print_tbcd(&data, 1); printf(", LAC 0x%x%x", cp[3], cp[4]); printf(", RAC 0x%x", cp[5]); ielen = GTPV1_TV_RAI_LENGTH; break; case GTPV1_TV_TLLI: /* 29.060 7.7.4 - Temporary Logical Link Identity (TLLI). */ TCHECK2(cp[0], GTPV1_TV_TLLI_LENGTH - 1); dpl = (u_int32_t *)cp; printf("TLLI 0x%x", ntohl(*dpl)); ielen = GTPV1_TV_TLLI_LENGTH; break; case GTPV1_TV_PTMSI: /* 29.060 7.7.5 - Packet TMSI (P-TMSI). */ TCHECK2(cp[0], GTPV1_TV_PTMSI_LENGTH - 1); dpl = (u_int32_t *)cp; printf("P-TMSI 0x%x", ntohl(*dpl)); ielen = GTPV1_TV_PTMSI_LENGTH; break; case GTPV1_TV_REORDER: /* 29.060 7.7.6 - Reordering Required. */ TCHECK2(cp[0], GTPV1_TV_REORDER_LENGTH - 1); printf("Reordering Required: "); if (cp[0] & 0x1) printf("yes"); else printf("no"); ielen = GTPV1_TV_REORDER_LENGTH; break; case GTPV1_TV_AUTH: /* 29.060 7.7.7 - Authentication Triplet. */ TCHECK2(cp[0], GTPV1_TV_AUTH_LENGTH - 1); dpl = (u_int32_t *)cp; printf("Auth: RAND 0x%x%x%x%x, SRES 0x%x, Kc 0x%x%x", ntohl(dpl[0]), ntohl(dpl[1]), ntohl(dpl[2]), ntohl(dpl[3]), ntohl(dpl[4]), ntohl(dpl[5]), ntohl(dpl[6])); ielen = GTPV1_TV_AUTH_LENGTH; break; case GTPV1_TV_MAP_CAUSE: /* 29.060 7.7.8 - MAP Cause. */ /* Cause defined in 3GPP TS 29.002. */ TCHECK2(cp[0], GTPV1_TV_MAP_CAUSE_LENGTH - 1); printf("Map Cause: %u", cp[0]); ielen = GTPV1_TV_MAP_CAUSE_LENGTH; break; case GTPV1_TV_PTMSI_SIGNATURE: /* 29.060 7.7.9 - P-TMSI Signature. */ /* Signature defined in 3GPP TS 24.008. */ TCHECK2(cp[0], GTPV1_TV_PTMSI_SIGNATURE_LENGTH - 1); printf("PTMSI Signature: 0x%x%x%x", cp[0], cp[1], cp[2]); ielen = GTPV1_TV_PTMSI_SIGNATURE_LENGTH; break; case GTPV1_TV_MS_VALIDATED: /* 29.060 7.7.10 - MS Validated. */ TCHECK2(cp[0], GTPV1_TV_MS_VALIDATED_LENGTH - 1); printf("MS Validated: "); if (cp[0] & 0x1) printf("yes"); else printf("no"); ielen = GTPV1_TV_MS_VALIDATED_LENGTH; break; case GTPV1_TV_RECOVERY: /* 29.060 7.7.11 - Recovery. */ TCHECK2(cp[0], GTPV1_TV_RECOVERY_LENGTH - 1); printf("Recovery: Restart counter %u", cp[0]); ielen = GTPV1_TV_RECOVERY_LENGTH; break; case GTPV1_TV_SELECTION_MODE: /* 29.060 7.7.12 - Selection Mode. */ TCHECK2(cp[0], GTPV1_TV_SELECTION_MODE_LENGTH - 1); data = (u_int8_t)cp[0]; printf("Selection Mode: %u", data & 0x2); ielen = GTPV1_TV_SELECTION_MODE_LENGTH; break; case GTPV1_TV_TEID_DATA_I: /* 29.060 7.7.13 - Tunnel Endpoint Identifier Data I. */ TCHECK2(cp[0], GTPV1_TV_TEID_DATA_I_LENGTH - 1); dpl = (u_int32_t *)cp; printf("TEI Data I: %u", ntohl(*dpl)); ielen = GTPV1_TV_TEID_DATA_I_LENGTH; break; case GTPV1_TV_TEID_CTRL: /* 29.060 7.7.14 - Tunnel Endpoint Identifier Control Plane. */ TCHECK2(cp[0], GTPV1_TV_TEID_CTRL_LENGTH - 1); dpl = (u_int32_t *)cp; printf("TEI Control Plane: %u", ntohl(*dpl)); ielen = GTPV1_TV_TEID_CTRL_LENGTH; break; case GTPV1_TV_TEID_DATA_II: /* 29.060 7.7.15 - Tunnel Endpoint Identifier Data II. */ TCHECK2(cp[0], GTPV1_TV_TEID_DATA_II_LENGTH - 1); data = cp[0] & 0xf; dpl = (u_int32_t *)(cp + 1); printf("TEI Data II: %u, NSAPI %u", ntohl(*dpl), data); ielen = GTPV1_TV_TEID_DATA_II_LENGTH; break; case GTPV1_TV_TEARDOWN: /* 29.060 7.7.16 - Teardown Indicator. */ TCHECK2(cp[0], GTPV1_TV_TEARDOWN_LENGTH - 1); printf("Teardown: "); if (cp[0] & 0x1) printf("yes"); else printf("no"); ielen = GTPV1_TV_TEARDOWN_LENGTH; break; case GTPV1_TV_NSAPI: /* 29.060 7.7.17 - NSAPI. */ TCHECK2(cp[0], GTPV1_TV_NSAPI_LENGTH - 1); data = (u_int8_t)cp[0]; printf("NSAPI %u", data & 0xf); ielen = GTPV1_TV_NSAPI_LENGTH; break; case GTPV1_TV_RANAP: /* 29.060 7.7.18 - RANAP Cause. */ TCHECK2(cp[0], GTPV1_TV_RANAP_LENGTH - 1); printf("RANAP Cause: %u", cp[0]); ielen = GTPV1_TV_RANAP_LENGTH; break; case GTPV1_TV_RAB_CONTEXT: /* 29.060 7.7.19 - RAB Context. */ TCHECK2(cp[0], GTPV1_TV_RAB_CONTEXT_LENGTH - 1); data = cp[0] & 0xf; dps = (u_int16_t *)(cp + 1); printf("RAB Context: NSAPI %u, DL GTP-U Seq No %u," "UL GTP-U Seq No %u, DL PDCP Seq No %u, UL PDCP Seq No %u", data, ntohs(dps[0]), ntohs(dps[1]), ntohs(dps[2]), ntohs(dps[3])); ielen = GTPV1_TV_RAB_CONTEXT_LENGTH; break; case GTPV1_TV_RADIO_PRIORITY_SMS: /* 29.060 7.7.20 - Radio Priority SMS. */ TCHECK2(cp[0], GTPV1_TV_RADIO_PRI_SMS_LENGTH - 1); printf("Radio Priority SMS: %u", cp[0] & 0x7); ielen = GTPV1_TV_RADIO_PRI_SMS_LENGTH; break; case GTPV1_TV_RADIO_PRIORITY: /* 29.060 7.7.21 - Radio Priority. */ TCHECK2(cp[0], GTPV1_TV_RADIO_PRI_LENGTH - 1); data = cp[0] >> 4; printf("Radio Priority: %u, NSAPI %u", cp[0] & 0x7, data); ielen = GTPV1_TV_RADIO_PRI_LENGTH; break; case GTPV1_TV_PACKET_FLOW_ID: /* 29.060 7.7.22 - Packet Flow ID. */ TCHECK2(cp[0], GTPV1_TV_PACKET_FLOW_ID_LENGTH - 1); printf("Packet Flow ID: %u, NSAPI %u", cp[1], cp[0] & 0xf); ielen = GTPV1_TV_PACKET_FLOW_ID_LENGTH; break; case GTPV1_TV_CHARGING: /* 29.060 7.7.23 - Charging Characteristics. */ /* Charging defined in 3GPP TS 32.298. */ TCHECK2(cp[0], GTPV1_TV_CHARGING_LENGTH - 1); printf("Charging Characteristics"); /* XXX */ ielen = GTPV1_TV_CHARGING_LENGTH; break; case GTPV1_TV_TRACE_REFERENCE: /* 29.060 7.7.24 - Trace Reference. */ TCHECK2(cp[0], GTPV1_TV_TRACE_REFERENCE_LENGTH - 1); dps = (u_int16_t *)cp; printf("Trace Reference: %u", ntohs(*dps)); ielen = GTPV1_TV_TRACE_REFERENCE_LENGTH; break; case GTPV1_TV_TRACE_TYPE: /* 29.060 7.7.25 - Trace Type. */ /* Trace type defined in GSM 12.08. */ TCHECK2(cp[0], GTPV1_TV_TRACE_TYPE_LENGTH - 1); dps = (u_int16_t *)cp; printf("Trace Type: %u", ntohs(*dps)); ielen = GTPV1_TV_TRACE_TYPE_LENGTH; break; case GTPV1_TV_MSNRR: /* 29.060 7.7.26 - MS Not Reachable Reason. */ /* Reason defined in 3GPP TS 23.040. */ TCHECK2(cp[0], GTPV1_TV_MSNRR_LENGTH - 1); printf("MS NRR: %u", cp[0]); ielen = GTPV1_TV_MSNRR_LENGTH; break; case GTPV1_TV_PACKET_XFER_CMD: /* 32.295 6.2.4.5.2 - Packet Transfer Command. */ TCHECK2(cp[0], GTPV1_TV_PACKET_XFER_CMD_LENGTH - 1); printf("Packet Transfer Command"); gtp_print_str(gtp_packet_xfer_cmd, nitems(gtp_packet_xfer_cmd), cp[0]); ielen = GTPV1_TV_PACKET_XFER_CMD_LENGTH; break; case GTPV1_TV_CHARGING_ID: /* 29.060 7.7.26 - Charging ID. */ TCHECK2(cp[0], GTPV1_TV_CHARGING_ID_LENGTH - 1); dpl = (u_int32_t *)cp; printf("Charging ID: %u", ntohl(*dpl)); ielen = GTPV1_TV_CHARGING_ID_LENGTH; break; default: printf("TV %u", value); } trunc: return ielen; } int gtp_v1_print_tlv(const u_char *cp, u_int value) { u_int8_t data; u_int16_t *lenp, *seqno, len; int ielen = -1; /* Get length of IE. */ TCHECK2(cp[0], 2); lenp = (u_int16_t *)cp; cp += 2; len = ntohs(*lenp); TCHECK2(cp[0], len); ielen = sizeof(data) + sizeof(len) + len; switch (value) { case GTPV1_TLV_END_USER_ADDRESS: /* 3GPP 29.060 - 7.7.27 End User Address. */ printf("End User Address"); gtp_print_user_address(cp, len); break; case GTPV1_TLV_MM_CONTEXT: /* 29.060 7.7.28 - MM Context. */ printf("MM Context"); /* XXX */ break; case GTPV1_TLV_PDP_CONTEXT: /* 29.260 7.7.29 - PDP Context. */ printf("PDP Context"); /* XXX */ break; case GTPV1_TLV_ACCESS_POINT_NAME: /* 29.060 7.7.30 - Access Point Name. */ printf("AP Name: "); gtp_print_apn(cp, len); break; case GTPV1_TLV_PROTOCOL_CONFIG_OPTIONS: /* 29.060 7.7.31 - Protocol Configuration Options. */ /* Defined in 3GPP TS 24.008. */ printf("Config Options"); /* XXX */ break; case GTPV1_TLV_GSN_ADDRESS: /* 29.060 7.7.32 - GSN Address. */ /* Defined in 3GPP TS 23.003. */ printf("GSN Address"); if (len == 4) printf(": %s", ipaddr_string(cp)); else if (len == 16) printf(": %s", ip6addr_string(cp)); break; case GTPV1_TLV_MSISDN: /* 29.060 7.7.33 - MS International PSTN/ISDN Number. */ printf("MSISDN "); data = (u_int8_t)cp[0]; /* XXX - Number type. */ gtp_print_tbcd(cp + 1, len - 1); break; case GTPV1_TLV_QOS_PROFILE: /* 29.060 7.7.34 - QoS Profile. */ /* QoS profile defined in 3GPP TS 24.008 10.5.6.5. */ printf("QoS Profile: "); data = (u_int8_t)cp[0]; printf("Delay Class %u, ", (data >> 3) & 0x7); printf("Reliability Class %u", data & 0x7); if (vflag > 1) { printf(", "); data = (u_int8_t)cp[1]; printf("Precedence Class %u", data & 0x7); /* XXX - Decode more QoS fields. */ } break; case GTPV1_TLV_AUTHENTICATION: /* 29.060 7.7.35 - Authentication. */ printf("Authentication"); /* XXX */ break; case GTPV1_TLV_TRAFFIC_FLOW: /* 29.060 7.7.36 - Traffic Flow Template. */ printf("Traffic Flow Template"); /* XXX */ break; case GTPV1_TLV_TARGET_IDENTIFICATION: /* 29.060 7.7.37 - Target Identification. */ printf("Target ID"); /* XXX */ break; case GTPV1_TLV_UTRAN_CONTAINER: /* 29.060 7.7.38 - UTRAN Transparent Container. */ printf("UTRAN Container"); /* XXX */ break; case GTPV1_TLV_RAB_SETUP_INFORMATION: /* 29.060 7.7.39 - RAB Setup Information. */ printf("RAB Setup"); /* XXX */ break; case GTPV1_TLV_EXT_HEADER_TYPE_LIST: /* 29.060 7.7.40 - Extension Header Type List. */ printf("Extension Header List"); /* XXX */ break; case GTPV1_TLV_TRIGGER_ID: /* 29.060 7.7.41 - Trigger ID. */ printf("Trigger ID"); /* XXX */ break; case GTPV1_TLV_OMC_IDENTITY: /* 29.060 7.7.42 - OMC Identity. */ printf("OMC Identity"); /* XXX */ break; case GTPV1_TLV_RAN_CONTAINER: /* 29.060 7.7.43 - RAN Transparent Container. */ printf("RAN Container"); /* XXX */ break; case GTPV1_TLV_PDP_CONTEXT_PRIORITIZATION: /* 29.060 7.7.45 - PDP Context Prioritization. */ printf("PDP Context Prioritization"); /* XXX */ break; case GTPV1_TLV_ADDITIONAL_RAB_SETUP_INFO: /* 29.060 7.7.45A - Additional RAB Setup Information. */ printf("Additional RAB Setup"); /* XXX */ break; case GTPV1_TLV_SGSN_NUMBER: /* 29.060 7.7.47 - SGSN Number. */ printf("SGSN Number"); /* XXX */ break; case GTPV1_TLV_COMMON_FLAGS: /* 29.060 7.7.48 - Common Flags. */ printf("Common Flags"); /* XXX */ break; case GTPV1_TLV_APN_RESTRICTION: /* 29.060 7.7.49 - APN Restriction. */ data = (u_int8_t)cp[0]; printf("APN Restriction: %u", data); break; case GTPV1_TLV_RADIO_PRIORITY_LCS: /* 29.060 7.7.25B - Radio Priority LCS. */ printf("Radio Priority LCS: %u", cp[0] & 0x7); break; case GTPV1_TLV_RAT_TYPE: /* 29.060 7.7.50 - RAT Type. */ printf("RAT"); gtp_print_str(gtp_rat_type, nitems(gtp_rat_type), cp[0]); break; case GTPV1_TLV_USER_LOCATION_INFO: /* 29.060 7.7.51 - User Location Information. */ printf("ULI"); /* XXX */ break; case GTPV1_TLV_MS_TIME_ZONE: /* 29.060 7.7.52 - MS Time Zone. */ printf("MSTZ"); /* XXX */ break; case GTPV1_TLV_IMEI_SV: /* 29.060 7.7.53 - IMEI(SV). */ printf("IMEI(SV) "); gtp_print_tbcd(cp, len); break; case GTPV1_TLV_CAMEL_CHARGING_CONTAINER: /* 29.060 7.7.54 - CAMEL Charging Information Container. */ printf("CAMEL Charging"); /* XXX */ break; case GTPV1_TLV_MBMS_UE_CONTEXT: /* 29.060 7.7.55 - MBMS UE Context. */ printf("MBMS UE Context"); /* XXX */ break; case GTPV1_TLV_TMGI: /* 29.060 7.7.56 - Temporary Mobile Group Identity. */ printf("TMGI"); /* XXX */ break; case GTPV1_TLV_RIM_ROUTING_ADDRESS: /* 29.060 7.7.57 - RIM Routing Address. */ printf("RIM Routing Address"); /* XXX */ break; case GTPV1_TLV_MBMS_PROTOCOL_CONFIG_OPTIONS: /* 29.060 7.7.58 - MBMS Protocol Configuration Options. */ printf("MBMS Protocol Config Options"); /* XXX */ break; case GTPV1_TLV_MBMS_SERVICE_AREA: /* 29.060 7.7.60 - MBMS Service Area. */ printf("MBMS Service Area"); /* XXX */ break; case GTPV1_TLV_SOURCE_RNC_PDCP_CONTEXT_INFO: /* 29.060 7.7.61 - Source RNC PDCP Context Information. */ printf("Source RNC PDCP Context"); /* XXX */ break; case GTPV1_TLV_ADDITIONAL_TRACE_INFO: /* 29.060 7.7.62 - Additional Trace Information. */ printf("Additional Trace Info"); /* XXX */ break; case GTPV1_TLV_HOP_COUNTER: /* 29.060 7.7.63 - Hop Counter. */ printf("Hop Counter: %u", cp[0]); break; case GTPV1_TLV_SELECTED_PLMN_ID: /* 29.060 7.7.64 - Selected PLMN ID. */ printf("Selected PLMN ID"); /* XXX */ break; case GTPV1_TLV_MBMS_SESSION_IDENTIFIER: /* 29.060 7.7.65 - MBMS Session Identifier. */ printf("MBMS Session ID: %u", cp[0]); break; case GTPV1_TLV_MBMS_2G_3G_INDICATOR: /* 29.060 7.7.66 - MBMS 2G/3G Indicator. */ printf("MBMS 2G/3G Indicator"); gtp_print_str(mbms_2g3g_indicator, nitems(mbms_2g3g_indicator), cp[0]); break; case GTPV1_TLV_ENHANCED_NSAPI: /* 29.060 7.7.67 - Enhanced NSAPI. */ printf("Enhanced NSAPI"); /* XXX */ break; case GTPV1_TLV_MBMS_SESSION_DURATION: /* 29.060 7.7.59 - MBMS Session Duration. */ printf("MBMS Session Duration"); /* XXX */ break; case GTPV1_TLV_ADDITIONAL_MBMS_TRACE_INFO: /* 29.060 7.7.68 - Additional MBMS Trace Info. */ printf("Additional MBMS Trace Info"); /* XXX */ break; case GTPV1_TLV_MBMS_SESSION_REPITITION_NO: /* 29.060 7.7.69 - MBMS Session Repetition Number. */ printf("MBMS Session Repetition No: %u", cp[0]); break; case GTPV1_TLV_MBMS_TIME_TO_DATA_TRANSFER: /* 29.060 7.7.70 - MBMS Time to Data Transfer. */ printf("MBMS Time to Data Transfer: %u", cp[0]); break; case GTPV1_TLV_PS_HANDOVER_REQUEST_CONTEXT: /* 29.060 7.7.71 - PS Handover Request Context (Void). */ break; case GTPV1_TLV_BSS_CONTAINER: /* 29.060 7.7.72 - BSS Container. */ printf("BSS Container"); /* XXX */ break; case GTPV1_TLV_CELL_IDENTIFICATION: /* 29.060 7.7.73 - Cell Identification. */ printf("Cell Identification"); /* XXX */ break; case GTPV1_TLV_PDU_NUMBERS: /* 29.060 7.7.74 - PDU Numbers. */ printf("PDU Numbers"); /* XXX */ break; case GTPV1_TLV_BSSGP_CAUSE: /* 29.060 7.7.75 - BSSGP Cause. */ printf("BSSGP Cause: %u", cp[0]); break; case GTPV1_TLV_REQUIRED_MBMS_BEARER_CAP: /* 29.060 7.7.76 - Required MBMS Bearer Cap. */ printf("Required MBMS Bearer Cap"); /* XXX */ break; case GTPV1_TLV_RIM_ROUTING_ADDRESS_DISC: /* 29.060 7.7.77 - RIM Routing Address Discriminator. */ printf("RIM Routing Address Discriminator: %u", cp[0] & 0xf); break; case GTPV1_TLV_LIST_OF_SETUP_PFCS: /* 29.060 7.7.78 - List of Setup PFCs. */ printf("List of Setup PFCs"); /* XXX */ break; case GTPV1_TLV_PS_HANDOVER_XID_PARAMETERS: /* 29.060 7.7.79 - PS Handover XID Parameters. */ printf("PS Handover XID Parameters"); /* XXX */ break; case GTPV1_TLV_MS_INFO_CHANGE_REPORTING: /* 29.060 7.7.80 - MS Info Change Reporting. */ printf("MS Info Change Reporting"); gtp_print_str(ms_info_change_rpt, nitems(ms_info_change_rpt), cp[0]); break; case GTPV1_TLV_DIRECT_TUNNEL_FLAGS: /* 29.060 7.7.81 - Direct Tunnel Flags. */ printf("Direct Tunnel Flags"); /* XXX */ break; case GTPV1_TLV_CORRELATION_ID: /* 29.060 7.7.82 - Correlation ID. */ printf("Correlation ID"); /* XXX */ break; case GTPV1_TLV_BEARER_CONTROL_MODE: /* 29.060 7.7.83 - Bearer Control Mode. */ printf("Bearer Control Mode"); /* XXX */ break; case GTPV1_TLV_MBMS_FLOW_IDENTIFIER: /* 29.060 7.7.84 - MBMS Flow Identifier. */ printf("MBMS Flow Identifier"); /* XXX */ break; case GTPV1_TLV_RELEASED_PACKETS: /* 32.295 6.2.4.5.4 - Sequence Numbers of Released Packets. */ printf("Released Packets:"); seqno = (u_int16_t *)cp; while (len > 0) { printf(" %u", ntohs(*seqno)); seqno++; len -= sizeof(*seqno); } break; case GTPV1_TLV_CANCELLED_PACKETS: /* 32.295 6.2.4.5.5 - Sequence Numbers of Cancelled Packets. */ printf("Cancelled Packets:"); seqno = (u_int16_t *)cp; while (len > 0) { printf(" %u", ntohs(*seqno)); seqno++; len -= sizeof(*seqno); } break; case GTPV1_TLV_CHARGING_GATEWAY_ADDRESS: /* 29.060 7.7.44 - Charging Gateway Address. */ printf("Charging Gateway"); if (len == 4) printf(": %s", ipaddr_string(cp)); else if (len == 16) printf(": %s", ip6addr_string(cp)); break; case GTPV1_TLV_DATA_RECORD_PACKET: /* 32.295 6.2.4.5.3 - Data Record Packet. */ printf("Data Record: Records %u, Format %u, Format Version %u", cp[0], cp[1], ntohs(*(u_int16_t *)(cp + 2))); break; case GTPV1_TLV_REQUESTS_RESPONDED: /* 32.295 6.2.4.6 - Requests Responded. */ printf("Requests Responded:"); seqno = (u_int16_t *)cp; while (len > 0) { printf(" %u", ntohs(*seqno)); seqno++; len -= sizeof(*seqno); } break; case GTPV1_TLV_ADDRESS_OF_RECOMMENDED_NODE: /* 32.295 6.2.4.3 - Address of Recommended Node. */ printf("Address of Recommended Node"); if (len == 4) printf(": %s", ipaddr_string(cp)); else if (len == 16) printf(": %s", ip6addr_string(cp)); break; case GTPV1_TLV_PRIVATE_EXTENSION: /* 29.060 7.7.46 - Private Extension. */ printf("Private Extension"); break; default: printf("TLV %u (len %u)", value, len); } return ielen; trunc: return -1; }