/* packet-lisp-tcp.c * Routines for Locator/ID Separation Protocol (LISP) TCP Control Message dissection * Copyright 2014, 2018 Lorand Jakab * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * SPDX-License-Identifier: GPL-2.0-or-later */ #include "config.h" #include "packet-tcp.h" #include "packet-lisp.h" #include #include #include void proto_register_lisp_tcp(void); void proto_reg_handoff_lisp_tcp(void); /* * See draft-kouvelas-lisp-map-server-reliable-transport-04 "LISP Map * Server Reliable Transport", and draft-kouvelas-lisp-rloc-membership-01 * "LISP RLOC Membership Distribution" for packet format and protocol * information. */ #define LISP_MSG_HEADER_LEN 4 #define LISP_MSG_END_MARKER 0x9FACADE9 /* LISP Map Server Reliable Transport message types */ #define TRANSPORT_BASE 16 /* LISP RLOC Membership Distribution message types */ #define MEMBERSHIP_BASE 22 /* Registration refresh message flags */ #define REFRESH_FLAG_R 0x8000 static gboolean lisp_tcp_desegment = TRUE; /* Initialize the protocol and registered fields */ static int proto_lisp_tcp = -1; static int hf_lisp_tcp_message_type = -1; static int hf_lisp_tcp_message_length = -1; static int hf_lisp_tcp_message_id = -1; static int hf_lisp_tcp_message_data = -1; static int hf_lisp_tcp_message_eid_afi = -1; static int hf_lisp_tcp_message_iid = -1; static int hf_lisp_tcp_message_sid = -1; static int hf_lisp_tcp_message_err = -1; static int hf_lisp_tcp_message_err_code = -1; static int hf_lisp_tcp_message_err_reserved = -1; static int hf_lisp_tcp_message_err_offending_msg_type = -1; static int hf_lisp_tcp_message_err_offending_msg_len = -1; static int hf_lisp_tcp_message_err_offending_msg_id = -1; static int hf_lisp_tcp_message_err_offending_msg_data = -1; static int hf_lisp_tcp_message_registration_reject_reason = -1; static int hf_lisp_tcp_message_registration_reject_res = -1; static int hf_lisp_tcp_message_registration_refresh_scope = -1; static int hf_lisp_tcp_message_registration_refresh_flags_rejected = -1; static int hf_lisp_tcp_message_registration_refresh_res = -1; static int hf_lisp_tcp_message_xtr_id = -1; static int hf_lisp_tcp_message_site_id = -1; static int hf_lisp_tcp_message_eid_prefix_length = -1; static int hf_lisp_tcp_message_eid_prefix_afi = -1; static int hf_lisp_tcp_message_eid_ipv4 = -1; static int hf_lisp_tcp_message_eid_ipv6 = -1; static int hf_lisp_tcp_message_eid_mac = -1; static int hf_lisp_tcp_message_eid_dn = -1; static int hf_lisp_tcp_message_rloc_afi = -1; static int hf_lisp_tcp_message_rloc_ipv4 = -1; static int hf_lisp_tcp_message_rloc_ipv6 = -1; static int hf_lisp_tcp_message_rid = -1; static int hf_lisp_tcp_message_end_marker = -1; /* Initialize the subtree pointers */ static gint ett_lisp_tcp = -1; static gint ett_lisp_tcp_lcaf = -1; static gint ett_lisp_tcp_eid_prefix = -1; static gint ett_lisp_tcp_map_register = -1; /* Initialize expert fields */ static expert_field ei_lisp_tcp_undecoded = EI_INIT; static expert_field ei_lisp_tcp_invalid_length = EI_INIT; static expert_field ei_lisp_tcp_invalid_marker = EI_INIT; static expert_field ei_lisp_tcp_unexpected_afi = EI_INIT; static dissector_handle_t lisp_tcp_handle; static const value_string lisp_tcp_typevals[] = { { TRANSPORT_BASE, "Error Notification" }, { TRANSPORT_BASE + 1, "Registration" }, { TRANSPORT_BASE + 2, "Registration ACK" }, { TRANSPORT_BASE + 3, "Registration NACK" }, { TRANSPORT_BASE + 4, "Registration Refresh" }, { TRANSPORT_BASE + 5, "Mapping Notification" }, { MEMBERSHIP_BASE, "RLOC Membership Subscribe" }, { MEMBERSHIP_BASE + 1, "RLOC Membership Subscribe ACK" }, { MEMBERSHIP_BASE + 2, "RLOC Membership Subscribe NACK" }, { MEMBERSHIP_BASE + 3, "RLOC Membership Unsubscribe" }, { MEMBERSHIP_BASE + 4, "RLOC Membership Element Add" }, { MEMBERSHIP_BASE + 5, "RLOC Membership Element Remove" }, { MEMBERSHIP_BASE + 6, "RLOC Membership Refresh Request" }, { MEMBERSHIP_BASE + 7, "RLOC Membership Refresh Begin" }, { MEMBERSHIP_BASE + 8, "RLOC Membership Refresh End" }, { 0, NULL} }; static const value_string lisp_tcp_membership_subscribe_errors[] = { { 0, "Undefined" }, { 1, "Instance not found" }, { 2, "Distribution not enabled" }, { 3, "Not Authorized" }, { 0, NULL} }; static const value_string lisp_tcp_registration_reject_reason[] = { { 1, "Not a valid site EID prefix" }, { 2, "Authentication failure" }, { 3, "Locator set not allowed" }, { 4, "Reason not defined" }, { 0, NULL} }; static const value_string lisp_tcp_registration_refresh_scope[] = { { 0, "All prefixes under all address families under all EID instances" }, { 1, "All prefixes under all address families under a single EID instance" }, { 2, "All prefixes under a single address family under a single EID instance" }, { 3, "All prefixes covered by a specific EID prefix in a single EID instance" }, { 4, "A specific EID prefix in a single EID instance" }, { 0, NULL} }; /* * Dissector for EID prefixes */ static guint dissect_lisp_tcp_message_eid_prefix(tvbuff_t *tvb, packet_info *pinfo, proto_tree *message_tree, guint offset, proto_item *tim) { proto_tree *prefix_tree, *lcaf_tree; gint str_len; guint8 prefix_length; guint16 prefix_afi, addr_len = 0; const gchar *prefix; prefix_length = tvb_get_guint8(tvb, offset); prefix_afi = tvb_get_ntohs(tvb, offset + 1); prefix = get_addr_str(pinfo->pool, tvb, offset + 3, prefix_afi, &addr_len); if (prefix == NULL) { expert_add_info_format(pinfo, message_tree, &ei_lisp_tcp_unexpected_afi, "Unexpected EID prefix AFI (%d), cannot decode", prefix_afi); return offset + addr_len; } proto_item_append_text(tim, " for %s/%d", prefix, prefix_length); prefix_tree = proto_tree_add_subtree_format(message_tree, tvb, offset, 3 + addr_len, ett_lisp_tcp_eid_prefix, NULL, "EID Prefix: %s/%d", prefix, prefix_length); /* Prefix-Length (1 byte) */ proto_tree_add_item(prefix_tree, hf_lisp_tcp_message_eid_prefix_length, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; /* EID-Prefix-AFI (2 bytes) */ proto_tree_add_item(prefix_tree, hf_lisp_tcp_message_eid_prefix_afi, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; /* EID-Prefix */ switch(prefix_afi) { case AFNUM_INET: proto_tree_add_item(prefix_tree, hf_lisp_tcp_message_eid_ipv4, tvb, offset, INET_ADDRLEN, ENC_BIG_ENDIAN); offset += INET_ADDRLEN; break; case AFNUM_INET6: proto_tree_add_item(prefix_tree, hf_lisp_tcp_message_eid_ipv6, tvb, offset, INET6_ADDRLEN, ENC_NA); offset += INET6_ADDRLEN; break; case AFNUM_LCAF: lcaf_tree = proto_tree_add_subtree_format(prefix_tree, tvb, offset, addr_len, ett_lisp_tcp_lcaf, NULL, "Address: %s", prefix); dissect_lcaf(tvb, pinfo, lcaf_tree, offset, NULL); offset += addr_len; break; case AFNUM_802: case AFNUM_EUI48: proto_tree_add_item(prefix_tree, hf_lisp_tcp_message_eid_mac, tvb, offset, EUI48_ADDRLEN, ENC_NA); offset += EUI48_ADDRLEN; break; case AFNUM_DISTNAME: str_len = tvb_strsize(tvb, offset); proto_tree_add_item(prefix_tree, hf_lisp_tcp_message_eid_dn, tvb, offset, str_len, ENC_ASCII); offset += str_len; break; } return offset; } /* * Dissector for Reliable Transport messages */ static guint dissect_lisp_tcp_reliable_transport_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree *message_tree, guint offset, guint16 type, guint16 data_len, proto_item *tim) { guint initial_offset = offset; proto_tree *map_register_tree; guint8 reject_reason, scope, err; guint16 refresh_flags, offending_msg_type; switch (type) { /* Error Notification */ case TRANSPORT_BASE: /* Error code (1 byte) */ err = tvb_get_guint8(tvb, offset); proto_tree_add_item(message_tree, hf_lisp_tcp_message_err_code, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; data_len -= 1; proto_item_append_text(tim, ", Code: %d", err); /* Reserved (3 bytes) */ proto_tree_add_item(message_tree, hf_lisp_tcp_message_err_reserved, tvb, offset, 3, ENC_BIG_ENDIAN); offset += 3; data_len -= 3; /* Offending message type (2 bytes) */ offending_msg_type = tvb_get_ntohs(tvb, offset); proto_tree_add_item(message_tree, hf_lisp_tcp_message_err_offending_msg_type, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; data_len -= 2; proto_item_append_text(tim, ", Offending message type: %s", val_to_str(offending_msg_type, lisp_tcp_typevals, "Unknown type (%u)")); /* Offending message length (2 bytes) */ proto_tree_add_item(message_tree, hf_lisp_tcp_message_err_offending_msg_len, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; data_len -= 2; /* Offending message ID (4 bytes) */ proto_tree_add_item(message_tree, hf_lisp_tcp_message_err_offending_msg_id, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; data_len -= 4; /* Offending message data */ if (data_len) { proto_tree_add_item(message_tree, hf_lisp_tcp_message_err_offending_msg_data, tvb, offset, data_len, ENC_NA); offset += data_len; } return offset; /* Registration */ case TRANSPORT_BASE + 1: /* Map-Register */ map_register_tree = proto_tree_add_subtree(message_tree, tvb, offset, data_len, ett_lisp_tcp_map_register, NULL, "Map-Register"); offset = dissect_lisp_map_register(tvb, pinfo, map_register_tree, offset, tim, FALSE); data_len -= offset - initial_offset; break; /* Registration ACK */ case TRANSPORT_BASE + 2: /* EID */ offset = dissect_lisp_tcp_message_eid_prefix(tvb, pinfo, message_tree, offset, tim); data_len -= offset - initial_offset; break; /* Registration Reject */ case TRANSPORT_BASE + 3: /* Reason (1 byte) */ reject_reason = tvb_get_guint8(tvb, offset); proto_tree_add_item(message_tree, hf_lisp_tcp_message_registration_reject_reason, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_item_append_text(tim, ", Reason: %s", val_to_str(reject_reason, lisp_tcp_registration_reject_reason, "Unknown reason code (%u)")); /* Reserved (2 bytes) */ proto_tree_add_item(message_tree, hf_lisp_tcp_message_registration_reject_res, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; /* EID */ offset = dissect_lisp_tcp_message_eid_prefix(tvb, pinfo, message_tree, offset, tim); data_len -= offset - initial_offset; break; /* Registration Refresh */ case TRANSPORT_BASE + 4: /* Reason (1 byte) */ scope = tvb_get_guint8(tvb, offset); proto_tree_add_item(message_tree, hf_lisp_tcp_message_registration_refresh_scope, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_item_append_text(tim, ", Scope: %s", val_to_str(scope, lisp_tcp_registration_refresh_scope, "Unknown scope code (%u)")); col_append_fstr(pinfo->cinfo, COL_INFO, ", Scope: %d", scope); /* Rejected only flag (1 bit) */ refresh_flags = tvb_get_ntohs(tvb, offset); proto_tree_add_item(message_tree, hf_lisp_tcp_message_registration_refresh_flags_rejected, tvb, offset, 2, ENC_BIG_ENDIAN); if (refresh_flags & REFRESH_FLAG_R) { proto_item_append_text(tim, " (rejected only)"); col_append_fstr(pinfo->cinfo, COL_INFO, " (rejected only)"); } /* Reserved (15 bits) */ proto_tree_add_item(message_tree, hf_lisp_tcp_message_registration_refresh_res, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; if (scope == 0) { data_len -= 3; break; } /* EID */ offset = dissect_lisp_tcp_message_eid_prefix(tvb, pinfo, message_tree, offset, tim); data_len -= offset - initial_offset; break; /* Mapping Notification */ case TRANSPORT_BASE + 5: /* xTR-ID (16 bytes) */ proto_tree_add_item(message_tree, hf_lisp_tcp_message_xtr_id, tvb, offset, LISP_XTRID_LEN, ENC_NA); offset += LISP_XTRID_LEN; /* Site-ID (8 bytes) */ proto_tree_add_item(message_tree, hf_lisp_tcp_message_site_id, tvb, offset, LISP_SITEID_LEN, ENC_NA); offset += LISP_SITEID_LEN; /* Mapping Record */ offset = dissect_lisp_mapping(tvb, pinfo, message_tree, 0, 1, FALSE, offset, tim); data_len -= offset - initial_offset; break; } if (data_len) { proto_tree_add_item(message_tree, hf_lisp_tcp_message_data, tvb, offset, data_len, ENC_NA); offset += data_len; expert_add_info_format(pinfo, message_tree, &ei_lisp_tcp_undecoded, "Work-in-progress"); } return offset; } /* * Dissector for Membership messages */ static guint dissect_lisp_tcp_membership_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree *message_tree, guint offset, guint16 type, guint16 data_len, proto_item *tim) { guint32 iid, sid, rid; guint8 err; guint64 siteid; guint16 afi; /* EID AFI (2 bytes) */ proto_tree_add_item(message_tree, hf_lisp_tcp_message_eid_afi, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; data_len -= 2; /* Instance ID (4 bytes) */ iid = tvb_get_ntohl(tvb, offset); proto_tree_add_item(message_tree, hf_lisp_tcp_message_iid, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; data_len -= 4; proto_item_append_text(tim, ", IID: %u", iid); switch (type) { case MEMBERSHIP_BASE + 1: case MEMBERSHIP_BASE + 2: /* Subscribe ID (4 bytes) */ sid = tvb_get_ntohl(tvb, offset); proto_tree_add_item(message_tree, hf_lisp_tcp_message_sid, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; data_len -= 4; col_append_fstr(pinfo->cinfo, COL_INFO, ", Sub ID: %u", sid); proto_item_append_text(tim, ", Sub ID: %u", sid); if (type == MEMBERSHIP_BASE + 2) { /* Error code (1 byte) */ err = tvb_get_guint8(tvb, offset); proto_tree_add_item(message_tree, hf_lisp_tcp_message_err, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; data_len -= 1; proto_item_append_text(tim, ", Error code: %s", val_to_str(err, lisp_tcp_membership_subscribe_errors, "Unknown error code (%u)")); } break; case MEMBERSHIP_BASE + 4: case MEMBERSHIP_BASE + 5: /* Site ID (8 bytes) */ siteid = tvb_get_ntoh64(tvb, offset); proto_tree_add_item(message_tree, hf_lisp_tcp_message_site_id, tvb, offset, LISP_SITEID_LEN, ENC_NA); offset += 8; data_len -= 8; proto_item_append_text(tim, ", Site-ID: %"PRIu64, siteid); /* RLOC AFI (2 bytes) */ afi = tvb_get_ntohs(tvb, offset); proto_tree_add_item(message_tree, hf_lisp_tcp_message_rloc_afi, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; data_len -= 2; switch (afi) { case AFNUM_INET: proto_tree_add_item(message_tree, hf_lisp_tcp_message_rloc_ipv4, tvb, offset, INET_ADDRLEN, ENC_NA); proto_item_append_text(tim, ", RLOC: %s", tvb_ip_to_str(pinfo->pool, tvb, offset)); col_append_fstr(pinfo->cinfo, COL_INFO, " [%u] %s", iid, tvb_ip_to_str(pinfo->pool, tvb, offset)); offset += INET_ADDRLEN; data_len -= INET_ADDRLEN; break; case AFNUM_INET6: proto_tree_add_item(message_tree, hf_lisp_tcp_message_rloc_ipv6, tvb, offset, INET6_ADDRLEN, ENC_NA); proto_item_append_text(tim, ", RLOC: %s", tvb_ip6_to_str(pinfo->pool, tvb, offset)); col_append_fstr(pinfo->cinfo, COL_INFO, " [%u] %s", iid, tvb_ip6_to_str(pinfo->pool, tvb, offset)); offset += INET6_ADDRLEN; data_len -= INET6_ADDRLEN; break; } break; case MEMBERSHIP_BASE + 7: case MEMBERSHIP_BASE + 8: /* Request ID (4 bytes) */ rid = tvb_get_ntohl(tvb, offset); proto_tree_add_item(message_tree, hf_lisp_tcp_message_rid, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; data_len -= 4; proto_item_append_text(tim, ", Req ID: %u", rid); break; } if (data_len) { proto_tree_add_item(message_tree, hf_lisp_tcp_message_data, tvb, offset, data_len, ENC_NA); offset += data_len; expert_add_info_format(pinfo, message_tree, &ei_lisp_tcp_undecoded, "Work-in-progress"); } return offset; } /* * Dissector for individual messages */ static int dissect_lisp_tcp_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { guint offset = 0; guint16 type, len, data_len; guint32 id, marker; proto_item *tim, *til, *tiem; proto_tree *message_tree; tim = proto_tree_add_item(tree, proto_lisp_tcp, tvb, offset, -1, ENC_NA); message_tree = proto_item_add_subtree(tim, ett_lisp_tcp); /* Message type (2 bytes) */ type = tvb_get_ntohs(tvb, offset); proto_tree_add_item(message_tree, hf_lisp_tcp_message_type, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; /* Message length (2 bytes) */ len = tvb_get_ntohs(tvb, offset); til = proto_tree_add_item(message_tree, hf_lisp_tcp_message_length, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; if (len < 8) { expert_add_info_format(pinfo, til, &ei_lisp_tcp_invalid_length, "Invalid message length (%u < 8)", len); } else if (len > 8) { /* Message ID (4 bytes) */ id = tvb_get_ntohl(tvb, offset); proto_tree_add_item(message_tree, hf_lisp_tcp_message_id, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; col_append_sep_fstr(pinfo->cinfo, COL_INFO, "; ", "Msg: %u, %s", id, val_to_str(type, lisp_tcp_typevals, "Unknown type (%u)")); proto_item_append_text(tim, ", Msg: %u, %s", id, val_to_str(type, lisp_tcp_typevals, "Unknown type (%u)")); proto_item_set_len(tim, len); data_len = len - 12; if (type >= TRANSPORT_BASE && type <= TRANSPORT_BASE + 5) { /* Map Server reliable transport message types */ offset = dissect_lisp_tcp_reliable_transport_message(tvb, pinfo, message_tree, offset, type, data_len, tim); } else if (type >= MEMBERSHIP_BASE && type <= MEMBERSHIP_BASE + 8) { /* EID instance membership message types */ offset = dissect_lisp_tcp_membership_message(tvb, pinfo, message_tree, offset, type, data_len, tim); } else { /* Message Data (variable length) */ proto_tree_add_item(message_tree, hf_lisp_tcp_message_data, tvb, offset, data_len, ENC_NA); offset += data_len; } } /* Message End Marker (4 bytes) */ marker = tvb_get_ntohl(tvb, offset); tiem = proto_tree_add_item(message_tree, hf_lisp_tcp_message_end_marker, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; if (marker != LISP_MSG_END_MARKER) { expert_add_info_format(pinfo, tiem, &ei_lisp_tcp_invalid_marker, "Invalid message end marker (0x%08x)", marker); } else { proto_item_append_text(tiem, " (correct)"); } return offset; } /* * Get message length, needed by tcp_dissect_pdus() */ static guint get_lisp_tcp_message_len(packet_info *pinfo _U_, tvbuff_t *tvb, int offset, void *data _U_) { guint16 mlen; /* Get length of memebership message */ mlen = tvb_get_ntohs(tvb, offset + 2); return mlen; } /* * Main dissector code */ static int dissect_lisp_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { /* Clear Info column before fetching data in case an exception is thrown */ col_clear(pinfo->cinfo, COL_INFO); /* Make entries in Protocol column and Info column on summary display */ col_set_str(pinfo->cinfo, COL_PROTOCOL, "LISP"); /* Reassemble and dissect PDUs */ tcp_dissect_pdus(tvb, pinfo, tree, lisp_tcp_desegment, LISP_MSG_HEADER_LEN, get_lisp_tcp_message_len, dissect_lisp_tcp_message, data); /* Return the amount of data this dissector was able to dissect */ return tvb_reported_length(tvb); } /* * Register the LISP protocol with Wireshark */ void proto_register_lisp_tcp(void) { /* Setup list of header fields */ static hf_register_info hf[] = { { &hf_lisp_tcp_message_type, { "Type", "lisp-tcp.message.type", FT_UINT16, BASE_DEC, VALS(lisp_tcp_typevals), 0x0, "TLV Message Type", HFILL }}, { &hf_lisp_tcp_message_length, { "Length", "lisp-tcp.message.length", FT_UINT16, BASE_DEC, NULL, 0x0, "TLV Message Length", HFILL }}, { &hf_lisp_tcp_message_id, { "Message ID", "lisp-tcp.message.id", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_data, { "Message Data", "lisp-tcp.message.data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_eid_afi, { "EID AFI", "lisp-tcp.message.eid.afi", FT_UINT16, BASE_DEC, VALS(afn_vals), 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_iid, { "Instance ID", "lisp-tcp.message.iid", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_sid, { "Subscribe Message ID", "lisp-tcp.message.sid", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_err, { "Error code", "lisp-tcp.message.err", FT_UINT8, BASE_DEC, VALS(lisp_tcp_membership_subscribe_errors), 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_err_code, { "Error code", "lisp-tcp.message.err.code", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_err_reserved, { "Error code", "lisp-tcp.message.err.reserved", FT_UINT24, BASE_HEX, NULL, 0x0, "Must be zero", HFILL }}, { &hf_lisp_tcp_message_err_offending_msg_type, { "Offending message type", "lisp-tcp.message.err.offending_msg.type", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_err_offending_msg_len, { "Offending message length", "lisp-tcp.message.err.offending_msg.len", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_err_offending_msg_id, { "Offending message ID", "lisp-tcp.message.err.offending_msg.id", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_err_offending_msg_data, { "Offending message data", "lisp-tcp.message.err.offending_msg.data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_registration_reject_reason, { "Registration reject reason", "lisp-tcp.message.registration_reject.reason", FT_UINT8, BASE_DEC, VALS(lisp_tcp_registration_reject_reason), 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_registration_reject_res, { "Reserved bits", "lisp-tcp.message.registration_reject.res", FT_UINT16, BASE_HEX, NULL, 0x0, "Must be zero", HFILL }}, { &hf_lisp_tcp_message_registration_refresh_scope, { "Registration refresh scope", "lisp-tcp.message.registration_refresh.scope", FT_UINT8, BASE_DEC, VALS(lisp_tcp_registration_refresh_scope), 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_registration_refresh_flags_rejected, { "Rejected only", "lisp-tcp.message.registration_refresh.flags.rejected", FT_BOOLEAN, 16, TFS(&tfs_set_notset), REFRESH_FLAG_R, NULL, HFILL }}, { &hf_lisp_tcp_message_registration_refresh_res, { "Reserved", "lisp-tcp.message.registration_refresh.res", FT_UINT16, BASE_HEX, NULL, 0x7FFF, "Must be zero", HFILL }}, { &hf_lisp_tcp_message_xtr_id, { "xTR-ID", "lisp-tcp.message.xtrid", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_site_id, { "Site-ID", "lisp-tcp.message.siteid", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_eid_prefix_length, { "Prefix Length", "lisp-tcp.message.eid.prefix.length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_eid_prefix_afi, { "Prefix AFI", "lisp-tcp.message.eid.prefix.afi", FT_UINT16, BASE_DEC, VALS(afn_vals), 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_eid_ipv4, { "Address", "lisp-tcp.message.eid.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_eid_ipv6, { "Address", "lisp-tcp.message.eid.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_eid_mac, { "Address", "lisp-tcp.message.eid.mac", FT_ETHER, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_eid_dn, { "Address", "lisp-tcp.message.eid.dn", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_rloc_afi, { "RLOC AFI", "lisp-tcp.message.rloc.afi", FT_UINT16, BASE_DEC, VALS(afn_vals), 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_rloc_ipv4, { "RLOC", "lisp-tcp.message.rloc.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_rloc_ipv6, { "RLOC", "lisp-tcp.message.rloc.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_rid, { "Request Message ID", "lisp-tcp.message.rid", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_lisp_tcp_message_end_marker, { "Message End Marker", "lisp-tcp.message.end_marker", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }}, }; /* Setup protocol subtree array */ static gint *ett[] = { &ett_lisp_tcp, &ett_lisp_tcp_lcaf, &ett_lisp_tcp_eid_prefix, &ett_lisp_tcp_map_register }; static ei_register_info ei[] = { { &ei_lisp_tcp_undecoded, { "lisp-tcp.undecoded", PI_UNDECODED, PI_WARN, "Not dissected yet (report to wireshark.org)", EXPFILL }}, { &ei_lisp_tcp_invalid_length, { "lisp-tcp.invalid_length", PI_PROTOCOL, PI_ERROR, "Invalid message length", EXPFILL }}, { &ei_lisp_tcp_invalid_marker, { "lisp-tcp.invalid_marker", PI_PROTOCOL, PI_ERROR, "Invalid message end marker", EXPFILL }}, { &ei_lisp_tcp_unexpected_afi, { "lisp-tcp.unexpected_afi", PI_PROTOCOL, PI_ERROR, "Unexpected AFI", EXPFILL }}, }; expert_module_t* expert_lisp_tcp; /* Register the protocol name and description */ proto_lisp_tcp = proto_register_protocol("Locator/ID Separation Protocol (Reliable Transport)", "LISP Reliable Transport", "lisp-tcp"); /* Required function calls to register the header fields and subtrees used */ proto_register_field_array(proto_lisp_tcp, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); expert_lisp_tcp = expert_register_protocol(proto_lisp_tcp); expert_register_field_array(expert_lisp_tcp, ei, array_length(ei)); /* Register dissector so that other dissectors can call it */ lisp_tcp_handle = register_dissector("lisp-tcp", dissect_lisp_tcp, proto_lisp_tcp); } /* * Simple form of proto_reg_handoff_lisp_tcp which can be used if there are * no prefs-dependent registration function calls. */ void proto_reg_handoff_lisp_tcp(void) { dissector_add_uint_with_preference("tcp.port", LISP_CONTROL_PORT, lisp_tcp_handle); } /* * Editor modelines - https://www.wireshark.org/tools/modelines.html * * Local variables: * c-basic-offset: 4 * tab-width: 8 * indent-tabs-mode: nil * End: * * vi: set shiftwidth=4 tabstop=8 expandtab: * :indentSize=4:tabSize=8:noTabs=true: */