/* packet-isis-hello.c * Routines for decoding isis hello packets and their CLVs * * Stuart Stanley * * Wireshark - Network traffic analyzer * By Gerald Combs * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "config.h" #include #include #include "packet-osi.h" #include "packet-isis.h" #include "packet-isis-clv.h" /* * Declarations for L1/L2 hello base header. */ #define ISIS_HELLO_CTYPE_MASK 0x03 #define ISIS_HELLO_CT_RESERVED_MASK 0xfc #define ISIS_HELLO_PRIORITY_MASK 0x7f #define ISIS_HELLO_P_RESERVED_MASK 0x80 #define ISIS_HELLO_TYPE_RESERVED 0 #define ISIS_HELLO_TYPE_LEVEL_1 1 #define ISIS_HELLO_TYPE_LEVEL_2 2 #define ISIS_HELLO_TYPE_LEVEL_12 3 /* * misc. bittest macros */ #define ISIS_RESTART_RR 0x01 #define ISIS_RESTART_RA 0x02 #define ISIS_RESTART_SA 0x04 #define ISIS_MASK_RESTART_RR(x) ((x)&ISIS_RESTART_RR) #define ISIS_MASK_RESTART_RA(x) ((x)&ISIS_RESTART_RA) #define ISIS_MASK_RESTART_SA(x) ((x)&ISIS_RESTART_SA) void proto_register_isis_hello(void); void proto_reg_handoff_isis_hello(void); static int proto_isis_hello = -1; /* hello packets */ static int hf_isis_hello_circuit = -1; static int hf_isis_hello_circuit_reserved = -1; static int hf_isis_hello_source_id = -1; static int hf_isis_hello_holding_timer = -1; static int hf_isis_hello_pdu_length = -1; static int hf_isis_hello_priority = -1; static int hf_isis_hello_priority_reserved = -1; static int hf_isis_hello_lan_id = -1; static int hf_isis_hello_clv_type = -1; static int hf_isis_hello_clv_length = -1; static int hf_isis_hello_local_circuit_id = -1; static int hf_isis_hello_clv_ipv4_int_addr = -1; static int hf_isis_hello_clv_ipv6_int_addr = -1; /* static int hf_isis_hello_clv_ptp_adj = -1; */ static int hf_isis_hello_clv_mt = -1; static int hf_isis_hello_clv_restart_flags = -1; static int hf_isis_hello_clv_restart_flags_rr = -1; static int hf_isis_hello_clv_restart_flags_ra = -1; static int hf_isis_hello_clv_restart_flags_sa = -1; static int hf_isis_hello_clv_restart_remain_time = -1; static int hf_isis_hello_clv_restart_neighbor = -1; /* Generated from convert_proto_tree_add_text.pl */ static int hf_isis_hello_extended_local_circuit_id = -1; static int hf_isis_hello_adjacency_state = -1; static int hf_isis_hello_neighbor_systemid = -1; static int hf_isis_hello_digest = -1; static int hf_isis_hello_digest_v = -1; static int hf_isis_hello_digest_a = -1; static int hf_isis_hello_digest_d = -1; static int hf_isis_hello_ect = -1; static int hf_isis_hello_bvid = -1; static int hf_isis_hello_bvid_u = -1; static int hf_isis_hello_bvid_m = -1; static int hf_isis_hello_area_address = -1; static int hf_isis_hello_instance_identifier = -1; static int hf_isis_hello_supported_itid = -1; static int hf_isis_hello_clv_nlpid = -1; static int hf_isis_hello_clv_ip_authentication = -1; static int hf_isis_hello_authentication = -1; static int hf_isis_hello_aux_mcid = -1; static int hf_isis_hello_mcid = -1; static int hf_isis_hello_is_neighbor = -1; static int hf_isis_hello_mtid = -1; static int hf_isis_hello_checksum = -1; static int hf_isis_hello_trill_neighbor_sf = -1; static int hf_isis_hello_trill_neighbor_lf = -1; static int hf_isis_hello_trill_neighbor_ff = -1; static int hf_isis_hello_trill_neighbor_of = -1; static int hf_isis_hello_trill_neighbor_size = -1; static int hf_isis_hello_trill_neighbor_reserved = -1; static int hf_isis_hello_trill_neighbor_mtu = -1; static int hf_isis_hello_trill_neighbor_snpa = -1; static int hf_isis_hello_neighbor_extended_local_circuit_id = -1; static int hf_isis_hello_vlan_flags_port_id = -1; static int hf_isis_hello_vlan_flags_nickname = -1; static int hf_isis_hello_vlan_flags_af = -1; static int hf_isis_hello_vlan_flags_ac = -1; static int hf_isis_hello_vlan_flags_vm = -1; static int hf_isis_hello_vlan_flags_by = -1; static int hf_isis_hello_vlan_flags_outer_vlan = -1; static int hf_isis_hello_vlan_flags_tr = -1; static int hf_isis_hello_vlan_flags_reserved = -1; static int hf_isis_hello_vlan_flags_designated_vlan = -1; static int hf_isis_hello_enabled_vlans = -1; static int hf_isis_hello_appointed_vlans = -1; static int hf_isis_hello_af_nickname = -1; static int hf_isis_hello_af_start_vlan = -1; static int hf_isis_hello_af_end_vlan = -1; static int hf_isis_hello_trill_version = -1; static int hf_isis_hello_trill_hello_reduction = -1; static int hf_isis_hello_trill_unassigned_1 = -1; static int hf_isis_hello_trill_hop_by_hop_flags = -1; static int hf_isis_hello_trill_unassigned_2 = -1; static gint ett_isis_hello = -1; static gint ett_isis_hello_clv_area_addr = -1; static gint ett_isis_hello_clv_instance_identifier = -1; static gint ett_isis_hello_clv_is_neighbors = -1; static gint ett_isis_hello_clv_padding = -1; static gint ett_isis_hello_clv_unknown = -1; static gint ett_isis_hello_clv_nlpid = -1; static gint ett_isis_hello_clv_authentication = -1; static gint ett_isis_hello_clv_ip_authentication = -1; static gint ett_isis_hello_clv_ipv4_int_addr = -1; static gint ett_isis_hello_clv_ipv6_int_addr = -1; static gint ett_isis_hello_clv_ptp_adj = -1; static gint ett_isis_hello_clv_mt = -1; static gint ett_isis_hello_clv_restart = -1; static gint ett_isis_hello_clv_restart_flags = -1; static gint ett_isis_hello_clv_mt_port_cap = -1; static gint ett_isis_hello_clv_mt_port_cap_spb_mcid = -1; static gint ett_isis_hello_clv_mt_port_cap_spb_digest = -1; static gint ett_isis_hello_clv_mt_port_cap_spb_bvid_tuples = -1; static gint ett_isis_hello_clv_mt_port_cap_vlan_flags = -1; static gint ett_isis_hello_clv_mt_port_cap_enabled_vlans = -1; static gint ett_isis_hello_clv_mt_port_cap_appointedfwrdrs = -1; static gint ett_isis_hello_clv_mt_port_cap_port_trill_ver = -1; static gint ett_isis_hello_clv_mt_port_cap_vlans_appointed = -1; static gint ett_isis_hello_clv_trill_neighbor = -1; static gint ett_isis_hello_clv_checksum = -1; static expert_field ei_isis_hello_short_packet = EI_INIT; static expert_field ei_isis_hello_long_packet = EI_INIT; static expert_field ei_isis_hello_authentication = EI_INIT; static expert_field ei_isis_hello_subtlv = EI_INIT; static expert_field ei_isis_hello_clv_mt = EI_INIT; static expert_field ei_isis_hello_clv_unknown = EI_INIT; static const value_string isis_hello_circuit_type_vals[] = { { ISIS_HELLO_TYPE_RESERVED, "Reserved 0 (discard PDU)"}, { ISIS_HELLO_TYPE_LEVEL_1, "Level 1 only"}, { ISIS_HELLO_TYPE_LEVEL_2, "Level 2 only"}, { ISIS_HELLO_TYPE_LEVEL_12, "Level 1 and 2"}, { 0, NULL} }; extern const range_string mtid_strings[]; static void dissect_hello_mt_port_cap_spb_mcid_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, int subtype, int sublen) { const int MCID_LEN = 51; const int SUBLEN = 2 * MCID_LEN; proto_tree *subtree; if (sublen != SUBLEN) { proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_packet, tvb, offset, -1, "Short SPB MCID TLV (%d vs %d)", sublen, SUBLEN); return; } subtree = proto_tree_add_subtree_format( tree, tvb, offset-2, sublen+2, ett_isis_hello_clv_mt_port_cap_spb_mcid, NULL, "SPB MCID: Type: 0x%02x, Length: %d", subtype, sublen); /* MCID: */ proto_tree_add_item(subtree, hf_isis_hello_mcid, tvb, offset, MCID_LEN, ENC_NA); offset += MCID_LEN; /* Aux MCID: */ proto_tree_add_item(subtree, hf_isis_hello_aux_mcid, tvb, offset, MCID_LEN, ENC_NA); /* offset += MCID_LEN; */ } static void dissect_hello_mt_port_cap_spb_digest_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, int subtype, int sublen) { const int DIGEST_LEN = 32; const int SUBLEN = 1 + DIGEST_LEN; if (sublen != SUBLEN) { proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_packet, tvb, offset, -1, "Short SPB Digest TLV (%d vs %d)", sublen, SUBLEN); return; } else { proto_tree *subtree; subtree = proto_tree_add_subtree_format( tree, tvb, offset-2, sublen+2, ett_isis_hello_clv_mt_port_cap_spb_digest, NULL, "SPB Digest: Type: 0x%02x, Length: %d", subtype, sublen); proto_tree_add_item( subtree, hf_isis_hello_digest_v, tvb, offset, 1, ENC_BIG_ENDIAN); proto_tree_add_item( subtree, hf_isis_hello_digest_a, tvb, offset, 1, ENC_BIG_ENDIAN); proto_tree_add_item( subtree, hf_isis_hello_digest_d, tvb, offset, 1, ENC_BIG_ENDIAN); ++offset; /* Digest: */ proto_tree_add_item(subtree, hf_isis_hello_digest, tvb, offset, DIGEST_LEN, ENC_NA); /* offset += DIGEST_LEN; */ } } static void dissect_hello_mt_port_cap_spb_bvid_tuples_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, int subtype, int sublen) { proto_tree *subtree; int subofs = offset; subtree = proto_tree_add_subtree_format( tree, tvb, offset-2, sublen+2, ett_isis_hello_clv_mt_port_cap_spb_bvid_tuples, NULL, "SPB Base Vlan Identifiers: Type: 0x%02x, Length: %d", subtype, sublen); while (sublen > 0) { if (sublen < 6) { proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_packet, tvb, offset, -1, "Short SPB BVID header entry (%d vs %d)", sublen, 6); return; } else { proto_tree_add_item( subtree, hf_isis_hello_ect, tvb, subofs, 4, ENC_NA); proto_tree_add_item( subtree, hf_isis_hello_bvid, tvb, subofs+4, 2, ENC_BIG_ENDIAN); proto_tree_add_item( subtree, hf_isis_hello_bvid_u, tvb, subofs+4, 2, ENC_BIG_ENDIAN); proto_tree_add_item( subtree, hf_isis_hello_bvid_m, tvb, subofs+4, 2, ENC_BIG_ENDIAN); } sublen -= 6; subofs += 6; } } static void dissect_hello_mt_port_cap_vlan_flags_clv(tvbuff_t *tvb, packet_info* pinfo _U_, proto_tree *tree, int offset, int subtype, int sublen) { proto_tree *subtree; subtree = proto_tree_add_subtree_format( tree, tvb, offset-2, sublen+2, ett_isis_hello_clv_mt_port_cap_vlan_flags, NULL, "Special VLANs and Flags (t=%u, l=%u)", subtype, sublen); proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_port_id, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_nickname, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_af, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_ac, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_vm, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_by, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_outer_vlan, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_tr, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_reserved, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_designated_vlan, tvb, offset, 2, ENC_BIG_ENDIAN); } static void parse_vlan_bitmap(proto_item *item, tvbuff_t *tvb, guint vlan, int offset, int sublen) { gint range=0, next=0; guint8 mask, bitmap, i; while (sublen>0) { bitmap = tvb_get_guint8(tvb, offset); mask = 0x80; for (i=0; i<8; i++) { if (bitmap & mask) { if (range==0) { proto_item_append_text(item, "%s%u", next++ ? ", " : "", vlan); } range++; } else { if (range>1) { proto_item_append_text(item, "-%u", vlan-1); } range=0; } vlan++; mask>>=1; } offset++; sublen--; } if (range>1) { proto_item_append_text(item, "-%u", vlan-1); } } static void dissect_hello_mt_port_cap_enabled_vlans_clv(tvbuff_t *tvb, packet_info* pinfo _U_, proto_tree *tree, int offset, int subtype, int sublen) { proto_tree *subtree; proto_item *item; guint vlan; subtree = proto_tree_add_subtree_format( tree, tvb, offset-2, sublen+2, ett_isis_hello_clv_mt_port_cap_enabled_vlans, NULL, "Enabled-VLANs (t=%u, l=%u)", subtype, sublen); vlan = tvb_get_ntohs(tvb, offset) & 0xfff; offset+=2; sublen-=2; item = proto_tree_add_string(subtree, hf_isis_hello_enabled_vlans, tvb, offset, sublen, ""); parse_vlan_bitmap(item, tvb, vlan, offset, sublen); } static void dissect_hello_mt_port_cap_appointedfwrdrs_clv(tvbuff_t *tvb, packet_info* pinfo _U_, proto_tree *tree, int offset, int subtype, int sublen) { proto_tree *subtree; subtree = proto_tree_add_subtree_format( tree, tvb, offset-2, sublen+2, ett_isis_hello_clv_mt_port_cap_appointedfwrdrs, NULL, "Appointed Forwarders (t=%u, l=%u)", subtype, sublen); while (sublen>=6) { proto_tree_add_item(subtree, hf_isis_hello_af_nickname, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(subtree, hf_isis_hello_af_start_vlan, tvb, offset+2, 2, ENC_BIG_ENDIAN); proto_tree_add_item(subtree, hf_isis_hello_af_end_vlan, tvb, offset+4, 2, ENC_BIG_ENDIAN); offset += 6; sublen -=6; } } static void dissect_hello_mt_port_cap_port_trill_ver_clv(tvbuff_t *tvb, packet_info* pinfo _U_, proto_tree *tree, int offset, int subtype, int sublen) { proto_tree *subtree; subtree = proto_tree_add_subtree_format( tree, tvb, offset-2, sublen+2, ett_isis_hello_clv_mt_port_cap_port_trill_ver, NULL, "Port TRILL Version (t=%u, l=%u)", subtype, sublen); proto_tree_add_item(subtree, hf_isis_hello_trill_version, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(subtree, hf_isis_hello_trill_hello_reduction, tvb, offset, 4, ENC_NA); proto_tree_add_item(subtree, hf_isis_hello_trill_unassigned_1, tvb, offset, 4, ENC_NA); proto_tree_add_item(subtree, hf_isis_hello_trill_hop_by_hop_flags, tvb, offset, 4, ENC_NA); proto_tree_add_item(subtree, hf_isis_hello_trill_unassigned_2, tvb, offset, 4, ENC_NA); } static void dissect_hello_mt_port_cap_vlans_appointed_clv(tvbuff_t *tvb, packet_info* pinfo _U_, proto_tree *tree, int offset, int subtype, int sublen) { proto_tree *subtree; proto_item *item; guint vlan; subtree = proto_tree_add_subtree_format( tree, tvb, offset-2, sublen+2, ett_isis_hello_clv_mt_port_cap_vlans_appointed, NULL, "Appointed VLANs (t=%u, l=%u)", subtype, sublen); vlan = tvb_get_ntohs(tvb, offset) & 0xfff; offset+=2; sublen-=2; item = proto_tree_add_string(subtree, hf_isis_hello_appointed_vlans, tvb, offset, sublen, ""); parse_vlan_bitmap(item, tvb, vlan, offset, sublen); } static void dissect_hello_mt_port_cap_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, int id_length _U_, int length) { if (length >= 2) { /* mtid */ proto_tree_add_item(tree, hf_isis_hello_mtid, tvb, offset, 2, ENC_BIG_ENDIAN); length -= 2; offset += 2; while (length >= 2) { guint8 subtype = tvb_get_guint8(tvb, offset); guint8 subtlvlen = tvb_get_guint8(tvb, offset+1); length -= 2; offset += 2; if (subtlvlen > length) { proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_packet, tvb, offset, -1, "Short type %d TLV (%d vs %d)", subtype, subtlvlen, length); return; } switch(subtype) { case 1: /* TRILL Special VLANs and Flags */ dissect_hello_mt_port_cap_vlan_flags_clv(tvb, pinfo, tree, offset, subtype, subtlvlen); break; case 2: /* TRILL Enabled VLANs */ dissect_hello_mt_port_cap_enabled_vlans_clv(tvb, pinfo, tree, offset, subtype, subtlvlen); break; case 3: /* TRILL Appointed Forwarders */ dissect_hello_mt_port_cap_appointedfwrdrs_clv(tvb, pinfo, tree, offset, subtype, subtlvlen); break; case 4: /* SPB MCID */ dissect_hello_mt_port_cap_spb_mcid_clv(tvb, pinfo, tree, offset, subtype, subtlvlen); break; case 5: /* SPB Digest */ dissect_hello_mt_port_cap_spb_digest_clv(tvb, pinfo, tree, offset, subtype, subtlvlen); break; case 6: /* SPB BVID Tuples */ dissect_hello_mt_port_cap_spb_bvid_tuples_clv(tvb, pinfo, tree, offset, subtype, subtlvlen); break; case 7: /* Port TRILL Version */ dissect_hello_mt_port_cap_port_trill_ver_clv(tvb, pinfo, tree, offset, subtype, subtlvlen); break; case 8: /* TRILL VLANs Appointed */ dissect_hello_mt_port_cap_vlans_appointed_clv(tvb, pinfo, tree, offset, subtype, subtlvlen); break; default: proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_subtlv, tvb, offset-2, subtlvlen+2, "Unknown Sub-TLV: Type: %d, Length: %d", subtype, subtlvlen ); } length -= subtlvlen; offset += subtlvlen; } } } /* * The Restart CLV is documented in RFC 3847 (Restart Signaling for * Intermediate System to Intermediate System). The CLV looks like this * * Type 211 * Length # of octets in the value field (1 to (3 + ID Length)) * Value * * No. of octets * +-----------------------+ * | Flags | 1 * +-----------------------+ * | Remaining Time | 2 * +-----------------------+ * | Restarting Neighbor ID| ID Length * +-----------------------+ * * Flags (1 octet) * * 0 1 2 3 4 5 6 7 * +--+--+--+--+--+--+--+--+ * | Reserved |SA|RA|RR| * +--+--+--+--+--+--+--+--+ * * RR - Restart Request * RA - Restart Acknowledgement * SA - Suppress adjacency advertisement * * The Remaining Time and Restarting Neighbor ID fields are only required when * the RA flag is set. The Flags field is always required. * */ /* * Name: dissect_hello_restart_clv() * * Description: * Decode for a restart clv - only found in IIHs * hence no call in the common clv dissector * */ static void dissect_hello_restart_clv(tvbuff_t *tvb, packet_info* pinfo _U_, proto_tree *tree, int offset, int id_length, int length) { int restart_options=0; proto_item *hold_time_item; if (length >= 1) { static const int * flags[] = { &hf_isis_hello_clv_restart_flags_sa, &hf_isis_hello_clv_restart_flags_ra, &hf_isis_hello_clv_restart_flags_rr, NULL }; restart_options = tvb_get_guint8(tvb, offset); proto_tree_add_bitmask_with_flags(tree, tvb, offset, hf_isis_hello_clv_restart_flags, ett_isis_hello_clv_restart_flags, flags, ENC_NA, BMT_NO_FALSE|BMT_NO_TFS); } /* The Remaining Time field should only be present if the RA flag is * set */ if (length >= 3 && ISIS_MASK_RESTART_RA(restart_options)) { hold_time_item = proto_tree_add_item( tree, hf_isis_hello_clv_restart_remain_time, tvb, offset+1, 2, ENC_BIG_ENDIAN ); proto_item_append_text( hold_time_item, "s" ); } /* The Restarting Neighbor ID should only be present if the RA flag is * set. */ if (length >= 3 + id_length && ISIS_MASK_RESTART_RA(restart_options)) { proto_tree_add_item( tree, hf_isis_hello_clv_restart_neighbor, tvb, offset+3, id_length, ENC_NA); } } /* * Name: dissect_hello_nlpid_clv() * * Description: * Decode for a hello packets NLPID clv. Calls into the * clv common one. * * Input: * tvbuff_t * : tvbuffer for packet data * proto_tree * : proto tree to build on (may be null) * int : current offset into packet data * int : length of IDs in packet. * int : length of this clv * * Output: * void, will modify proto_tree if not null. */ static void dissect_hello_nlpid_clv(tvbuff_t *tvb, packet_info* pinfo _U_, proto_tree *tree, int offset, int id_length _U_, int length) { isis_dissect_nlpid_clv(tvb, tree, hf_isis_hello_clv_nlpid, offset, length); } /* * Name: dissect_hello_mt_clv() * * Description: * Decode for a hello packets Multi Topology clv. Calls into the * clv common one. * * Input: * tvbuff_t * : tvbuffer for packet data * proto_tree * : proto tree to build on (may be null) * int : current offset into packet data * int : length of IDs in packet. * int : length of this clv * * Output: * void, will modify proto_tree if not null. */ static void dissect_hello_mt_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, int id_length _U_, int length) { isis_dissect_mt_clv(tvb, pinfo, tree, offset, length, hf_isis_hello_clv_mt, &ei_isis_hello_clv_mt); } /* * Name: dissect_hello_ip_int_addr_clv() * * Description: * Decode for a hello packets ip interface addr clv. Calls into the * clv common one. * * Input: * tvbuff_t * : tvbuffer for packet data * proto_tree * : proto tree to build on (may be null) * int : current offset into packet data * int : length of IDs in packet. * int : length of this clv * * Output: * void, will modify proto_tree if not null. */ static void dissect_hello_ip_int_addr_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, int id_length _U_, int length) { isis_dissect_ip_int_clv(tree, pinfo, tvb, &ei_isis_hello_short_packet, offset, length, hf_isis_hello_clv_ipv4_int_addr ); } /* * Name: dissect_hello_ipv6_int_addr_clv() * * Description: * Decode for a hello packets ipv6 interface addr clv. Calls into the * clv common one. * * Input: * tvbuff_t * : tvbuffer for packet data * proto_tree * : proto tree to build on (may be null) * int : current offset into packet data * int : length of IDs in packet. * int : length of this clv * * Output: * void, will modify proto_tree if not null. */ static void dissect_hello_ipv6_int_addr_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, int id_length _U_, int length) { isis_dissect_ipv6_int_clv(tree, pinfo, tvb, &ei_isis_hello_short_packet, offset, length, hf_isis_hello_clv_ipv6_int_addr ); } /* * Name: dissect_hello_authentication_clv() * * Description: * Decode for a hello packets authentication clv. * Calls into the CLV common one. * * Input: * tvbuff_t * : tvbuffer for packet data * proto_tree * : proto tree to build on (may be null) * int : current offset into packet data * int : length of IDs in packet. * int : length of this clv * * Output: * void, will modify proto_tree if not null. */ static void dissect_hello_authentication_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, int id_length _U_, int length) { isis_dissect_authentication_clv(tree, pinfo, tvb, hf_isis_hello_authentication, &ei_isis_hello_authentication, offset, length); } /* * Name: dissect_hello_ip_authentication_clv() * * Description: * Decode for a hello packets IP authentication clv. * Calls into the CLV common one. * * Input: * tvbuff_t * : tvbuffer for packet data * proto_tree * : proto tree to build on (may be null) * int : current offset into packet data * int : length of IDs in packet. * int : length of this clv * * Output: * void, will modify proto_tree if not null. */ static void dissect_hello_ip_authentication_clv(tvbuff_t *tvb, packet_info* pinfo _U_, proto_tree *tree, int offset, int id_length _U_, int length) { if ( length != 0 ) { proto_tree_add_item( tree, hf_isis_hello_clv_ip_authentication, tvb, offset, length, ENC_ASCII|ENC_NA); } } /* * Name: dissect_hello_trill_neighbor_clv */ static void dissect_hello_trill_neighbor_clv(tvbuff_t *tvb, packet_info* pinfo _U_, proto_tree *tree, int offset, int id_length _U_, int length) { guint8 size = (tvb_get_guint8(tvb, offset)) & 0x1f; if(size==0) size=6; proto_tree_add_item(tree, hf_isis_hello_trill_neighbor_sf, tvb, offset, 1, ENC_NA); proto_tree_add_item(tree, hf_isis_hello_trill_neighbor_lf, tvb, offset, 1, ENC_NA); proto_tree_add_item(tree, hf_isis_hello_trill_neighbor_size, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; length--; while(length>=(size+3)) { proto_tree_add_item(tree, hf_isis_hello_trill_neighbor_ff, tvb, offset, 1, ENC_NA); proto_tree_add_item(tree, hf_isis_hello_trill_neighbor_of, tvb, offset, 1, ENC_NA); proto_tree_add_item(tree, hf_isis_hello_trill_neighbor_reserved, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; length--; proto_tree_add_item(tree, hf_isis_hello_trill_neighbor_mtu, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; length -= 2; proto_tree_add_item(tree, hf_isis_hello_trill_neighbor_snpa, tvb, offset, 6, ENC_NA); offset += 6; length -= 6; } } /* * Name: dissect_hello_checksum_clv() * * Description: * dump and verify the optional checksum in TLV 12 * * Input: * tvbuff_t * : tvbuffer for packet data * proto_tree * : protocol display tree to fill out. May be NULL * int : offset into packet data where we are. * int : length of clv we are decoding * * Output: * void, but we will add to proto tree if !NULL. */ static void dissect_hello_checksum_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, int id_length _U_, int length) { guint16 pdu_length,checksum, cacl_checksum=0; if ( length != 2 ) { proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_packet, tvb, offset, length, "incorrect checksum length (%u), should be (2)", length ); return; } checksum = tvb_get_ntohs(tvb, offset); /* the check_and_get_checksum() function needs to know how big * the packet is. we can either pass through the pdu-len through several layers * of dissectors and wrappers or extract the PDU length field from the PDU specific header * which is offseted 17 bytes in IIHs (relative to the beginning of the IS-IS packet) */ pdu_length = tvb_get_ntohs(tvb, 17); /* unlike the LSP checksum verification which starts at an offset of 12 we start at offset 0*/ switch (check_and_get_checksum(tvb, 0, pdu_length, checksum, offset, &cacl_checksum)) { case NO_CKSUM : proto_tree_add_uint_format_value( tree, hf_isis_hello_checksum, tvb, offset, length, checksum, "0x%04x [unused]", checksum); break; case DATA_MISSING : proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_long_packet, tvb, offset, -1, "Packet length %d went beyond packet", tvb_captured_length(tvb) ); break; case CKSUM_NOT_OK : proto_tree_add_uint_format_value( tree, hf_isis_hello_checksum, tvb, offset, length, checksum, "0x%04x [incorrect, should be 0x%04x]", checksum, cacl_checksum); break; case CKSUM_OK : proto_tree_add_uint_format_value( tree, hf_isis_hello_checksum, tvb, offset, length, checksum, "0x%04x [correct]", checksum); break; default : g_message("'check_and_get_checksum' returned an invalid value"); } } /* * Name: dissect_hello_area_address_clv() * * Description: * Decode for a hello packets area address clv. * Calls into the CLV common one. * * Input: * tvbuff_t * : tvbuffer for packet data * proto_tree * : proto tree to build on (may be null) * int : current offset into packet data * int : length of IDs in packet. * int : length of this clv * * Output: * void, will modify proto_tree if not null. */ static void dissect_hello_area_address_clv(tvbuff_t *tvb, packet_info* pinfo _U_, proto_tree *tree, int offset, int id_length _U_, int length) { isis_dissect_area_address_clv(tree, pinfo, tvb, &ei_isis_hello_short_packet, hf_isis_hello_area_address, offset, length); } /* * Name: dissect_hello_instance_identifier_clv() * * Description: * Decode for a hello packets Instance Identifier clv. * Calls into the CLV common one. * * Input: * tvbuff_t * : tvbuffer for packet data * proto_tree * : proto tree to build on (may be null) * int : current offset into packet data * int : length of IDs in packet. * int : length of this clv * * Output: * void, will modify proto_tree if not null. */ static void dissect_hello_instance_identifier_clv(tvbuff_t *tvb, packet_info* pinfo _U_, proto_tree *tree, int offset, int id_length _U_, int length) { isis_dissect_instance_identifier_clv(tree, pinfo, tvb, &ei_isis_hello_short_packet, hf_isis_hello_instance_identifier, hf_isis_hello_supported_itid, offset, length); } static const value_string adj_state_vals[] = { { 0, "Up" }, { 1, "Initializing" }, { 2, "Down" }, { 0, NULL } }; static void dissect_hello_ptp_adj_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, int id_length, int length) { switch(length) { case 1: proto_tree_add_item(tree, hf_isis_hello_adjacency_state, tvb, offset, 1, ENC_BIG_ENDIAN); break; case 5: proto_tree_add_item(tree, hf_isis_hello_adjacency_state, tvb, offset, 1, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_isis_hello_extended_local_circuit_id, tvb, offset+1, 4, ENC_BIG_ENDIAN); break; case 11: proto_tree_add_item(tree, hf_isis_hello_adjacency_state, tvb, offset, 1, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_isis_hello_extended_local_circuit_id, tvb, offset+1, 4, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_isis_hello_neighbor_systemid, tvb, offset+5, id_length, ENC_NA); break; case 15: proto_tree_add_item(tree, hf_isis_hello_adjacency_state, tvb, offset, 1, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_isis_hello_extended_local_circuit_id, tvb, offset+1, 4, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_isis_hello_neighbor_systemid, tvb, offset+5, id_length, ENC_NA); proto_tree_add_item(tree, hf_isis_hello_neighbor_extended_local_circuit_id, tvb, offset+5+id_length, 4, ENC_BIG_ENDIAN); break; default: proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_packet, tvb, offset, -1, "malformed TLV (%d vs 1,5,11,15)", length ); } } /* * Name: isis_dissect_is_neighbors_clv() * * Description: * Take apart a IS neighbor packet. A neighbor is n 6 byte packets. * (they tend to be an 802.3 MAC address, but it's not required). * * Input: * tvbuff_t * : tvbuffer for packet data * proto_tree * : protocol display tree to fill out. May be NULL * int : offset into packet data where we are. * int : length of IDs in packet. * int : length of clv we are decoding * * Output: * void, but we will add to proto tree if !NULL. */ static void dissect_hello_is_neighbors_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset, int id_length _U_, int length) { while ( length > 0 ) { if (length<6) { proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_packet, tvb, offset, -1, "short is neighbor (%d vs 6)", length ); return; } /* * Lets turn the area address into "standard" 0000.0000.etc * format string. */ proto_tree_add_item(tree, hf_isis_hello_is_neighbor, tvb, offset, 6, ENC_NA); offset += 6; length -= 6; } } /* * Name: dissect_hello_padding_clv() * * Description: * Decode for a hello packet's padding clv. Padding does nothing, * so we just return. * * Input: * tvbuff_t * : tvbuffer for packet data * proto_tree * : proto tree to build on (may be null) * int : current offset into packet data * int : length of IDs in packet. * int : length of this clv * * Output: * void */ static void dissect_hello_padding_clv(tvbuff_t *tvb _U_, packet_info* pinfo _U_, proto_tree *tree _U_, int offset _U_, int id_length _U_, int length _U_) { /* nothing to do here! */ } static const isis_clv_handle_t clv_l1_hello_opts[] = { { ISIS_CLV_AREA_ADDRESS, "Area address(es)", &ett_isis_hello_clv_area_addr, dissect_hello_area_address_clv }, { ISIS_CLV_IS_NEIGHBORS, "IS Neighbor(s)", &ett_isis_hello_clv_is_neighbors, dissect_hello_is_neighbors_clv }, { ISIS_CLV_INSTANCE_IDENTIFIER, "Instance Identifier", &ett_isis_hello_clv_instance_identifier, dissect_hello_instance_identifier_clv }, { ISIS_CLV_PADDING, "Padding", &ett_isis_hello_clv_padding, dissect_hello_padding_clv }, { ISIS_CLV_PROTOCOLS_SUPPORTED, "Protocols Supported", &ett_isis_hello_clv_nlpid, dissect_hello_nlpid_clv }, { ISIS_CLV_IP_ADDR, "IP Interface address(es)", &ett_isis_hello_clv_ipv4_int_addr, dissect_hello_ip_int_addr_clv }, { ISIS_CLV_IP6_ADDR, "IPv6 Interface address(es)", &ett_isis_hello_clv_ipv6_int_addr, dissect_hello_ipv6_int_addr_clv }, { ISIS_CLV_RESTART, "Restart Signaling", &ett_isis_hello_clv_restart, dissect_hello_restart_clv }, { ISIS_CLV_AUTHENTICATION, "Authentication", &ett_isis_hello_clv_authentication, dissect_hello_authentication_clv }, { ISIS_CLV_IP_AUTHENTICATION, "IP Authentication", &ett_isis_hello_clv_ip_authentication, dissect_hello_ip_authentication_clv }, { ISIS_CLV_MT_PORT_CAP, "MT Port Capability", &ett_isis_hello_clv_mt_port_cap, dissect_hello_mt_port_cap_clv }, { ISIS_CLV_MT_SUPPORTED, "Multi Topology", &ett_isis_hello_clv_mt, dissect_hello_mt_clv }, { ISIS_CLV_TRILL_NEIGHBOR, "TRILL Neighbor", &ett_isis_hello_clv_trill_neighbor, dissect_hello_trill_neighbor_clv }, { ISIS_CLV_CHECKSUM, "Checksum", &ett_isis_hello_clv_checksum, dissect_hello_checksum_clv }, { 0, "", NULL, NULL } }; static const isis_clv_handle_t clv_l2_hello_opts[] = { { ISIS_CLV_AREA_ADDRESS, "Area address(es)", &ett_isis_hello_clv_area_addr, dissect_hello_area_address_clv }, { ISIS_CLV_IS_NEIGHBORS, "IS Neighbor(s)", &ett_isis_hello_clv_is_neighbors, dissect_hello_is_neighbors_clv }, { ISIS_CLV_INSTANCE_IDENTIFIER, "Instance Identifier", &ett_isis_hello_clv_instance_identifier, dissect_hello_instance_identifier_clv }, { ISIS_CLV_PADDING, "Padding", &ett_isis_hello_clv_padding, dissect_hello_padding_clv }, { ISIS_CLV_PROTOCOLS_SUPPORTED, "Protocols Supported", &ett_isis_hello_clv_nlpid, dissect_hello_nlpid_clv }, { ISIS_CLV_IP_ADDR, "IP Interface address(es)", &ett_isis_hello_clv_ipv4_int_addr, dissect_hello_ip_int_addr_clv }, { ISIS_CLV_IP6_ADDR, "IPv6 Interface address(es)", &ett_isis_hello_clv_ipv6_int_addr, dissect_hello_ipv6_int_addr_clv }, { ISIS_CLV_AUTHENTICATION, "Authentication", &ett_isis_hello_clv_authentication, dissect_hello_authentication_clv }, { ISIS_CLV_IP_AUTHENTICATION, "IP Authentication", &ett_isis_hello_clv_ip_authentication, dissect_hello_ip_authentication_clv }, { ISIS_CLV_RESTART, "Restart Signaling", &ett_isis_hello_clv_restart, dissect_hello_restart_clv }, { ISIS_CLV_MT_SUPPORTED, "Multi Topology", &ett_isis_hello_clv_mt, dissect_hello_mt_clv }, { ISIS_CLV_CHECKSUM, "Checksum", &ett_isis_hello_clv_checksum, dissect_hello_checksum_clv }, { 0, "", NULL, NULL } }; static const isis_clv_handle_t clv_ptp_hello_opts[] = { { ISIS_CLV_AREA_ADDRESS, "Area address(es)", &ett_isis_hello_clv_area_addr, dissect_hello_area_address_clv }, { ISIS_CLV_INSTANCE_IDENTIFIER, "Instance Identifier", &ett_isis_hello_clv_instance_identifier, dissect_hello_instance_identifier_clv }, { ISIS_CLV_PADDING, "Padding", &ett_isis_hello_clv_padding, dissect_hello_padding_clv }, { ISIS_CLV_PROTOCOLS_SUPPORTED, "Protocols Supported", &ett_isis_hello_clv_nlpid, dissect_hello_nlpid_clv }, { ISIS_CLV_IP_ADDR, "IP Interface address(es)", &ett_isis_hello_clv_ipv4_int_addr, dissect_hello_ip_int_addr_clv }, { ISIS_CLV_IP6_ADDR, "IPv6 Interface address(es)", &ett_isis_hello_clv_ipv6_int_addr, dissect_hello_ipv6_int_addr_clv }, { ISIS_CLV_AUTHENTICATION, "Authentication", &ett_isis_hello_clv_authentication, dissect_hello_authentication_clv }, { ISIS_CLV_IP_AUTHENTICATION, "IP Authentication", &ett_isis_hello_clv_ip_authentication, dissect_hello_ip_authentication_clv }, { ISIS_CLV_MT_PORT_CAP, "MT Port Capability", &ett_isis_hello_clv_mt_port_cap, dissect_hello_mt_port_cap_clv }, { ISIS_CLV_RESTART, "Restart Signaling", &ett_isis_hello_clv_restart, dissect_hello_restart_clv }, { ISIS_CLV_PTP_ADJ_STATE, "Point-to-point Adjacency State", &ett_isis_hello_clv_ptp_adj, dissect_hello_ptp_adj_clv }, { ISIS_CLV_MT_SUPPORTED, "Multi Topology", &ett_isis_hello_clv_mt, dissect_hello_mt_clv }, { ISIS_CLV_CHECKSUM, "Checksum", &ett_isis_hello_clv_checksum, dissect_hello_checksum_clv }, { 0, "", NULL, NULL } }; /* * Name: isis_dissect_isis_hello() * * Description: * This procedure rips apart the various types of ISIS hellos. L1H and * L2H's are identical for the most part, while the PTP hello has * a shorter header. */ static void dissect_isis_hello(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset, const isis_clv_handle_t *opts, int header_length, int id_length) { proto_item *ti; proto_tree *hello_tree; int pdu_length; col_set_str(pinfo->cinfo, COL_PROTOCOL, "ISIS HELLO"); ti = proto_tree_add_item(tree, proto_isis_hello, tvb, offset, -1, ENC_NA); hello_tree = proto_item_add_subtree(ti, ett_isis_hello); proto_tree_add_item(hello_tree, hf_isis_hello_circuit, tvb, offset, 1, ENC_BIG_ENDIAN); proto_tree_add_item(hello_tree, hf_isis_hello_circuit_reserved, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_tree_add_item(hello_tree, hf_isis_hello_source_id, tvb, offset, id_length, ENC_NA); col_append_fstr(pinfo->cinfo, COL_INFO, ", System-ID: %s", tvb_print_system_id( tvb, offset, id_length )); offset += id_length; proto_tree_add_item(hello_tree, hf_isis_hello_holding_timer, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; pdu_length = tvb_get_ntohs(tvb, offset); proto_tree_add_uint(hello_tree, hf_isis_hello_pdu_length, tvb, offset, 2, pdu_length); offset += 2; if (opts == clv_ptp_hello_opts) { proto_tree_add_item(hello_tree, hf_isis_hello_local_circuit_id, tvb, offset, 1, ENC_BIG_ENDIAN ); offset += 1; } else { proto_tree_add_item(hello_tree, hf_isis_hello_priority, tvb, offset, 1, ENC_BIG_ENDIAN); proto_tree_add_item(hello_tree, hf_isis_hello_priority_reserved, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_tree_add_item(hello_tree, hf_isis_hello_lan_id, tvb, offset, id_length + 1, ENC_NA); offset += id_length + 1; } pdu_length -= header_length; if (pdu_length < 0) { expert_add_info_format(pinfo, ti, &ei_isis_hello_long_packet, "Packet header length %d went beyond packet", header_length ); return; } /* * Now, we need to decode our CLVs. We need to pass in * our list of valid ones! */ isis_dissect_clvs(tvb, pinfo, hello_tree, offset, opts, &ei_isis_hello_short_packet, pdu_length, id_length, ett_isis_hello_clv_unknown, hf_isis_hello_clv_type, hf_isis_hello_clv_length, ei_isis_hello_clv_unknown); } static int dissect_isis_l1_hello(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data) { isis_data_t* isis = (isis_data_t*)data; dissect_isis_hello(tvb, pinfo, tree, 0, clv_l1_hello_opts, isis->header_length, isis->system_id_len); return tvb_captured_length(tvb); } static int dissect_isis_l2_hello(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data) { isis_data_t* isis = (isis_data_t*)data; dissect_isis_hello(tvb, pinfo, tree, 0, clv_l2_hello_opts, isis->header_length, isis->system_id_len); return tvb_captured_length(tvb); } static int dissect_isis_ptp_hello(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data) { isis_data_t* isis = (isis_data_t*)data; dissect_isis_hello(tvb, pinfo, tree, 0, clv_ptp_hello_opts, isis->header_length, isis->system_id_len); return tvb_captured_length(tvb); } /* * Name: isis_register_hello() * * Description: * Register our protocol sub-sets with protocol manager. * * Input: * int : protocol index for the ISIS protocol * * Output: * void */ void proto_register_isis_hello(void) { static hf_register_info hf[] = { { &hf_isis_hello_circuit, { "Circuit type", "isis.hello.circuit_type", FT_UINT8, BASE_HEX, VALS(isis_hello_circuit_type_vals), ISIS_HELLO_CTYPE_MASK, NULL, HFILL }}, { &hf_isis_hello_circuit_reserved, { "Reserved", "isis.hello.reserved", FT_UINT8, BASE_HEX, NULL, ISIS_HELLO_CT_RESERVED_MASK, NULL, HFILL }}, { &hf_isis_hello_source_id, { "SystemID {Sender of PDU}", "isis.hello.source_id", FT_SYSTEM_ID, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_holding_timer, { "Holding timer", "isis.hello.holding_timer", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_pdu_length, { "PDU length", "isis.hello.pdu_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_priority, { "Priority", "isis.hello.priority", FT_UINT8, BASE_DEC, NULL, ISIS_HELLO_PRIORITY_MASK, NULL, HFILL }}, { &hf_isis_hello_priority_reserved, { "Reserved", "isis.hello.reserved", FT_UINT8, BASE_DEC, NULL, ISIS_HELLO_P_RESERVED_MASK, NULL, HFILL }}, { &hf_isis_hello_lan_id, { "SystemID {Designated IS}", "isis.hello.lan_id", FT_SYSTEM_ID, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_clv_type, { "Type", "isis.hello.clv.type", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_clv_length, { "Length", "isis.hello.clv.length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_local_circuit_id, { "Local circuit ID", "isis.hello.local_circuit_id", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_clv_ipv4_int_addr, { "IPv4 interface address", "isis.hello.clv_ipv4_int_addr", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_clv_ipv6_int_addr, { "IPv6 interface address", "isis.hello.clv_ipv6_int_addr", FT_IPv6, BASE_NONE, NULL, 0x0, NULL, HFILL }}, #if 0 { &hf_isis_hello_clv_ptp_adj, { "Point-to-point Adjacency", "isis.hello.clv_ptp_adj", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, #endif { &hf_isis_hello_clv_mt, { "MT-ID", "isis.hello.clv_mt", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_clv_restart_flags, { "Restart Signaling Flags", "isis.hello.clv_restart_flags", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_clv_restart_flags_rr, { "Restart Request", "isis.hello.clv_restart_flags.rr", FT_BOOLEAN, 8, TFS(&tfs_true_false), ISIS_RESTART_RR, "When set, the router is beginning a graceful restart", HFILL }}, { &hf_isis_hello_clv_restart_flags_ra, { "Restart Acknowledgment", "isis.hello.clv_restart_flags.ra", FT_BOOLEAN, 8, TFS(&tfs_true_false), ISIS_RESTART_RA, "When set, the router is willing to enter helper mode", HFILL }}, { &hf_isis_hello_clv_restart_flags_sa, { "Suppress Adjacency", "isis.hello.clv_restart_flags.sa", FT_BOOLEAN, 8, TFS(&tfs_true_false), ISIS_RESTART_SA, "When set, the router is starting as opposed to restarting", HFILL }}, { &hf_isis_hello_clv_restart_remain_time, { "Remaining holding time", "isis.hello.clv_restart.remain_time", FT_UINT16, BASE_DEC, NULL, 0x0, "How long the helper router will maintain the existing adjacency", HFILL }}, { &hf_isis_hello_clv_restart_neighbor, { "Restarting Neighbor ID", "isis.hello.clv_restart.neighbor", FT_SYSTEM_ID, BASE_NONE, NULL, 0x0, "The System ID of the restarting neighbor", HFILL }}, /* Generated from convert_proto_tree_add_text.pl */ { &hf_isis_hello_mcid, { "MCID", "isis.hello.mcid", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_aux_mcid, { "Aux MCID", "isis.hello.aux_mcid", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_digest, { "Digest", "isis.hello.digest", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_digest_v, { "V", "isis.hello.digest.v", FT_UINT8, BASE_DEC, NULL, 0x10, NULL, HFILL }}, { &hf_isis_hello_digest_a, { "A", "isis.hello.digest.a", FT_UINT8, BASE_DEC, NULL, 0x0c, NULL, HFILL }}, { &hf_isis_hello_digest_d, { "D", "isis.hello.digest.d", FT_UINT8, BASE_DEC, NULL, 0x03, NULL, HFILL }}, { &hf_isis_hello_ect, { "ECT", "isis.hello.ect", FT_BYTES, SEP_DASH, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_bvid, { "BVID", "isis.hello.bvid", FT_UINT16, BASE_HEX_DEC, NULL, 0xFFF0, NULL, HFILL }}, { &hf_isis_hello_bvid_u, { "U", "isis.hello.bvid.u", FT_UINT16, BASE_HEX_DEC, NULL, 0x0008, NULL, HFILL }}, { &hf_isis_hello_bvid_m, { "M", "isis.hello.bvid.m", FT_UINT16, BASE_HEX_DEC, NULL, 0x0004, NULL, HFILL }}, { &hf_isis_hello_area_address, { "Area address", "isis.hello.area_address", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_instance_identifier, { "Instance Identifier", "isis.hello.iid", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_supported_itid, { "Supported ITID", "isis.hello.supported_itid", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_clv_nlpid, { "NLPID", "isis.hello.clv_nlpid", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_clv_ip_authentication, { "NLPID", "isis.hello.clv_ip_authentication", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_authentication, { "Authentication", "isis.hello.clv_authentication", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_mtid, { "Topology ID", "isis.hello.mtid", FT_UINT16, BASE_DEC|BASE_RANGE_STRING, RVALS(mtid_strings), 0xfff, NULL, HFILL }}, { &hf_isis_hello_trill_neighbor_sf, { "Smallest flag", "isis.hello.trill_neighbor.sf", FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x80, NULL, HFILL }}, { &hf_isis_hello_trill_neighbor_lf, { "Largest flag", "isis.hello.trill_neighbor.lf", FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x40, NULL, HFILL }}, { &hf_isis_hello_trill_neighbor_size, { "SNPA Size", "isis.hello.trill_neighbor.size", FT_UINT8, BASE_DEC, NULL, 0x1f, NULL, HFILL }}, { &hf_isis_hello_trill_neighbor_ff, { "Failed flag", "isis.hello.trill_neighbor.ff", FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x80, NULL, HFILL }}, { &hf_isis_hello_trill_neighbor_of, { "OOMF flag", "isis.hello.trill_neighbor.of", FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x40, NULL, HFILL }}, { &hf_isis_hello_trill_neighbor_reserved, { "Reserved", "isis.hello.trill_neighbor.reserved", FT_UINT8, BASE_DEC, NULL, 0x3f, NULL, HFILL }}, { &hf_isis_hello_trill_neighbor_mtu, { "Tested MTU", "isis.hello.trill_neighbor.mtu", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_trill_neighbor_snpa, { "SNPA", "isis.hello.trill_neighbor.snpa", FT_SYSTEM_ID, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_checksum, { "Checksum", "isis.hello.checksum", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_adjacency_state, { "Adjacency State", "isis.hello.adjacency_state", FT_UINT8, BASE_DEC, VALS(adj_state_vals), 0x0, NULL, HFILL }}, { &hf_isis_hello_extended_local_circuit_id, { "Extended Local circuit ID", "isis.hello.extended_local_circuit_id", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_neighbor_systemid, { "Neighbor SystemID", "isis.hello.neighbor_systemid", FT_SYSTEM_ID, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_neighbor_extended_local_circuit_id, { "Neighbor Extended Local circuit ID", "isis.hello.neighbor_extended_local_circuit_id", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_vlan_flags_port_id, { "Port ID", "isis.hello.vlan_flags.port_id", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_vlan_flags_nickname, { "Nickname", "isis.hello.vlan_flags.nickname", FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_vlan_flags_af, { "Appointed Forwarder", "isis.hello.vlan_flags.af", FT_BOOLEAN, 16, TFS(&tfs_set_notset), 0x8000, NULL, HFILL }}, { &hf_isis_hello_vlan_flags_ac, { "Access Port", "isis.hello.vlan_flags.ac", FT_BOOLEAN, 16, TFS(&tfs_set_notset), 0x4000, NULL, HFILL }}, { &hf_isis_hello_vlan_flags_vm, { "VLAN Mapping Detected", "isis.hello.vlan_flags.vm", FT_BOOLEAN, 16, TFS(&tfs_set_notset), 0x2000, NULL, HFILL }}, { &hf_isis_hello_vlan_flags_by, { "Bypass Pseudonode", "isis.hello.vlan_flags.by", FT_BOOLEAN, 16, TFS(&tfs_set_notset), 0x1000, NULL, HFILL }}, { &hf_isis_hello_vlan_flags_outer_vlan, { "Outer VLAN", "isis.hello.vlan_flags.outer_vlan", FT_UINT16, BASE_DEC, NULL, 0xfff, NULL, HFILL }}, { &hf_isis_hello_vlan_flags_tr, { "Trunk Port", "isis.hello.vlan_flags.tr", FT_BOOLEAN, 16, TFS(&tfs_set_notset), 0x8000, NULL, HFILL }}, { &hf_isis_hello_vlan_flags_reserved, { "Reserved", "isis.hello.vlan_flags.reserved", FT_BOOLEAN, 16, TFS(&tfs_set_notset), 0x7000, NULL, HFILL }}, { &hf_isis_hello_vlan_flags_designated_vlan, { "Designated VLAN", "isis.hello.vlan_flags.designated_vlan", FT_UINT16, BASE_DEC, NULL, 0xfff, NULL, HFILL }}, { &hf_isis_hello_enabled_vlans, { "Enabled VLANs", "isis.hello.enabled_vlans", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_appointed_vlans, { "Appointed VLANs", "isis.hello.appointed_vlans", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_af_nickname, { "Nickname", "isis.hello.af.nickname", FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_af_start_vlan, { "Start VLAN", "isis.hello.af.start_vlan", FT_UINT16, BASE_DEC, NULL, 0xfff, NULL, HFILL }}, { &hf_isis_hello_af_end_vlan, { "End VLAN", "isis.hello.af.end_vlan", FT_UINT16, BASE_DEC, NULL, 0xfff, NULL, HFILL }}, { &hf_isis_hello_trill_version, { "Maximum version", "isis.hello.trill.maximum_version", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_isis_hello_trill_hello_reduction, { "Hello Reduction", "isis.hello.trill.hello_reduction", FT_BOOLEAN, 32, TFS(&tfs_supported_not_supported), 0x80000000, NULL, HFILL }}, { &hf_isis_hello_trill_unassigned_1, { "Unassigned", "isis.hello.trill.unassigned_1", FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x60000000, NULL, HFILL }}, { &hf_isis_hello_trill_hop_by_hop_flags, { "Hop-by-hop Extended Header Flags", "isis.hello.trill.hop_by_hop_flags", FT_BOOLEAN, 32, TFS(&tfs_supported_not_supported), 0x1ffc0000, NULL, HFILL }}, { &hf_isis_hello_trill_unassigned_2, { "Unassigned", "isis.hello.trill.unassigned_2",FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x0003ffff, NULL, HFILL }}, { &hf_isis_hello_is_neighbor, { "IS Neighbor", "isis.hello.is_neighbor", FT_ETHER, BASE_NONE, NULL, 0x0, NULL, HFILL }}, }; static gint *ett[] = { &ett_isis_hello, &ett_isis_hello_clv_area_addr, &ett_isis_hello_clv_instance_identifier, &ett_isis_hello_clv_is_neighbors, &ett_isis_hello_clv_padding, &ett_isis_hello_clv_unknown, &ett_isis_hello_clv_nlpid, &ett_isis_hello_clv_authentication, &ett_isis_hello_clv_ip_authentication, &ett_isis_hello_clv_ipv4_int_addr, &ett_isis_hello_clv_ipv6_int_addr, &ett_isis_hello_clv_ptp_adj, &ett_isis_hello_clv_mt, &ett_isis_hello_clv_restart, &ett_isis_hello_clv_restart_flags, &ett_isis_hello_clv_mt_port_cap, &ett_isis_hello_clv_mt_port_cap_spb_mcid, &ett_isis_hello_clv_mt_port_cap_spb_digest, &ett_isis_hello_clv_mt_port_cap_spb_bvid_tuples, &ett_isis_hello_clv_mt_port_cap_vlan_flags, &ett_isis_hello_clv_mt_port_cap_enabled_vlans, &ett_isis_hello_clv_mt_port_cap_appointedfwrdrs, &ett_isis_hello_clv_mt_port_cap_port_trill_ver, &ett_isis_hello_clv_mt_port_cap_vlans_appointed, &ett_isis_hello_clv_trill_neighbor, &ett_isis_hello_clv_checksum }; static ei_register_info ei[] = { { &ei_isis_hello_short_packet, { "isis.hello.short_packet", PI_MALFORMED, PI_ERROR, "Short packet", EXPFILL }}, { &ei_isis_hello_long_packet, { "isis.hello.long_packet", PI_MALFORMED, PI_ERROR, "Long packet", EXPFILL }}, { &ei_isis_hello_subtlv, { "isis.hello.subtlv.unknown", PI_PROTOCOL, PI_WARN, "Unknown Sub-TLV", EXPFILL }}, { &ei_isis_hello_authentication, { "isis.hello.authentication.unknown", PI_PROTOCOL, PI_WARN, "Unknown authentication type", EXPFILL }}, { &ei_isis_hello_clv_mt, { "isis.hello.clv_mt.malformed", PI_MALFORMED, PI_ERROR, "malformed MT-ID", EXPFILL }}, { &ei_isis_hello_clv_unknown, { "isis.hello.clv.unknown", PI_UNDECODED, PI_NOTE, "Unknown option", EXPFILL }}, }; expert_module_t* expert_isis_hello; /* Register the protocol name and description */ proto_isis_hello = proto_register_protocol("ISIS HELLO", "ISIS HELLO", "isis.hello"); proto_register_field_array(proto_isis_hello, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); expert_isis_hello = expert_register_protocol(proto_isis_hello); expert_register_field_array(expert_isis_hello, ei, array_length(ei)); } void proto_reg_handoff_isis_hello(void) { dissector_add_uint("isis.type", ISIS_TYPE_L1_HELLO, create_dissector_handle(dissect_isis_l1_hello, proto_isis_hello)); dissector_add_uint("isis.type", ISIS_TYPE_L2_HELLO, create_dissector_handle(dissect_isis_l2_hello, proto_isis_hello)); dissector_add_uint("isis.type", ISIS_TYPE_PTP_HELLO, create_dissector_handle(dissect_isis_ptp_hello, proto_isis_hello)); } /* * Editor modelines - http://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: */