diff options
Diffstat (limited to 'epan/dissectors/packet-isis-hello.c')
| -rw-r--r-- | epan/dissectors/packet-isis-hello.c | 1713 |
1 files changed, 1713 insertions, 0 deletions
diff --git a/epan/dissectors/packet-isis-hello.c b/epan/dissectors/packet-isis-hello.c new file mode 100644 index 00000000..19b06eae --- /dev/null +++ b/epan/dissectors/packet-isis-hello.c @@ -0,0 +1,1713 @@ +/* packet-isis-hello.c + * Routines for decoding isis hello packets and their CLVs + * + * Stuart Stanley <stuarts@mxmail.net> + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "config.h" + +#include <epan/packet.h> +#include <epan/expert.h> +#include <epan/nlpid.h> +#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_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_checksum_status = -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_reverse_metric_flags = -1; +static int hf_isis_hello_reverse_metric_flag_reserved = -1; +static int hf_isis_hello_reverse_metric_flag_u = -1; +static int hf_isis_hello_reverse_metric_flag_w = -1; +static int hf_isis_hello_reverse_metric_metric = -1; +static int hf_isis_hello_reverse_metric_sub_length = -1; +static int hf_isis_hello_reverse_metric_sub_data = -1; +static int hf_isis_hello_bfd_enabled_nlpid = -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 int hf_isis_hello_clv_ipv6_glb_int_addr = -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_nlpid_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 gint ett_isis_hello_clv_reverse_metric = -1; +static gint ett_isis_hello_clv_bfd_enabled = -1; +static gint ett_isis_hello_clv_ipv6_glb_int_addr = -1; +static gint ett_isis_hello_reverse_metric_flags = -1; + +static expert_field ei_isis_hello_short_pdu = EI_INIT; +static expert_field ei_isis_hello_long_pdu = EI_INIT; +static expert_field ei_isis_hello_bad_checksum = 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_short_clv = 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_clv, 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_clv, 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_clv, 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, isis_data_t *isis _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_clv, 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, isis_data_t *isis, int length) +{ + int restart_options=0; + proto_item *hold_time_item; + + if (length >= 1) { + static int * const 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 + isis->system_id_len && ISIS_MASK_RESTART_RA(restart_options)) { + proto_tree_add_item( tree, hf_isis_hello_clv_restart_neighbor, tvb, offset+3, isis->system_id_len, 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, isis_data_t *isis _U_, int length) +{ + isis_dissect_nlpid_clv(tvb, tree, ett_isis_hello_clv_nlpid_nlpid, hf_isis_hello_clv_nlpid_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, isis_data_t *isis _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, isis_data_t *isis _U_, int length) +{ + isis_dissect_ip_int_clv(tree, pinfo, tvb, &ei_isis_hello_short_clv, + 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, isis_data_t *isis _U_, int length) +{ + isis_dissect_ipv6_int_clv(tree, pinfo, tvb, &ei_isis_hello_short_clv, + 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, isis_data_t *isis _U_, int length) +{ + isis_dissect_authentication_clv(tree, pinfo, tvb, hf_isis_hello_authentication, hf_isis_clv_key_id, &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, isis_data_t *isis _U_, int length) +{ + if ( length != 0 ) { + proto_tree_add_item( tree, hf_isis_hello_clv_ip_authentication, tvb, offset, length, ENC_ASCII); + } +} + +/* + * 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, isis_data_t *isis _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_reverse_metric_clv + */ +static void +dissect_hello_reverse_metric_clv(tvbuff_t *tvb, packet_info* pinfo _U_, + proto_tree *tree, int offset, isis_data_t *isis _U_, int length _U_) { + + guint32 sub_length; + + static int * const flags[] = { + &hf_isis_hello_reverse_metric_flag_reserved, + &hf_isis_hello_reverse_metric_flag_u, + &hf_isis_hello_reverse_metric_flag_w, + NULL + }; + + proto_tree_add_bitmask(tree, tvb, offset, hf_isis_hello_reverse_metric_flags, ett_isis_hello_reverse_metric_flags, flags, ENC_NA); + offset += 1; + proto_tree_add_item(tree, hf_isis_hello_reverse_metric_metric, tvb, offset, 3, ENC_BIG_ENDIAN); + offset += 3; + proto_tree_add_item_ret_uint(tree, hf_isis_hello_reverse_metric_sub_length, tvb, offset, 1, ENC_BIG_ENDIAN, &sub_length); + offset += 1; + if (sub_length > 0) { + proto_tree_add_item(tree, hf_isis_hello_reverse_metric_sub_data, tvb, offset, sub_length, ENC_NA); + } +} + +/* + * Name: dissect_hello_bfd_enabled_clv + * + * Description: + * Decode for a hello packets BFD enabled clv. + * + * 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_bfd_enabled_clv(tvbuff_t *tvb, packet_info* pinfo _U_, + proto_tree *tree, int offset, isis_data_t *isis _U_, int length) { + + while (length >= 3) { + /* mtid */ + proto_tree_add_item(tree, hf_isis_hello_mtid, tvb, offset, 2, ENC_BIG_ENDIAN); + length -= 2; + offset += 2; + /* nlpid */ + proto_tree_add_item(tree, hf_isis_hello_bfd_enabled_nlpid, tvb, offset, 1, ENC_NA); + length -= 1; + offset += 1; + }; +} + +/* + * 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, isis_data_t *isis, int length) { + + guint16 checksum, cacl_checksum=0; + + if ( length != 2 ) { + proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_clv, tvb, offset, length, + "incorrect checksum length (%u), should be (2)", length ); + return; + } + + checksum = tvb_get_ntohs(tvb, offset); + + if (checksum == 0) { + /* No checksum present */ + proto_tree_add_checksum(tree, tvb, offset, hf_isis_hello_checksum, hf_isis_hello_checksum_status, &ei_isis_hello_bad_checksum, pinfo, 0, ENC_BIG_ENDIAN, PROTO_CHECKSUM_NOT_PRESENT); + } else { + if (osi_check_and_get_checksum(tvb, 0, isis->pdu_length, offset, &cacl_checksum)) { + /* Successfully processed checksum, verify it */ + proto_tree_add_checksum(tree, tvb, offset, hf_isis_hello_checksum, hf_isis_hello_checksum_status, &ei_isis_hello_bad_checksum, pinfo, cacl_checksum, ENC_BIG_ENDIAN, PROTO_CHECKSUM_VERIFY); + } else { + /* We didn't capture the entire packet, so we can't verify it */ + proto_tree_add_checksum(tree, tvb, offset, hf_isis_hello_checksum, hf_isis_hello_checksum_status, &ei_isis_hello_bad_checksum, pinfo, 0, ENC_BIG_ENDIAN, PROTO_CHECKSUM_NO_FLAGS); + } + } +} + + + +/* + * 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, isis_data_t *isis _U_, int length) +{ + isis_dissect_area_address_clv(tree, pinfo, tvb, &ei_isis_hello_short_clv, 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, isis_data_t *isis _U_, int length) +{ + isis_dissect_instance_identifier_clv(tree, pinfo, tvb, &ei_isis_hello_short_clv, 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, isis_data_t *isis, 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, isis->system_id_len, 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, isis->system_id_len, ENC_NA); + proto_tree_add_item(tree, hf_isis_hello_neighbor_extended_local_circuit_id, tvb, offset+5+isis->system_id_len, 4, ENC_BIG_ENDIAN); + break; + default: + proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_clv, 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, + isis_data_t *isis _U_, int length) +{ + while ( length > 0 ) { + if (length<6) { + proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_clv, 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_, + isis_data_t *isis _U_, int length _U_) +{ + /* nothing to do here! */ +} + +/* + * Name: dissect_hello_ipv6_glb_int_addr_clv() + * + * Description: + * Decode for a hello packets ipv6 gobal interface addr clv. Calls into the + * clv 233. + * + * 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_glb_int_addr_clv(tvbuff_t *tvb, packet_info* pinfo, + proto_tree *tree, int offset, isis_data_t *isis _U_, int length) +{ + isis_dissect_ipv6_int_clv(tree, pinfo, tvb, &ei_isis_hello_short_clv, + offset, length, hf_isis_hello_clv_ipv6_glb_int_addr ); +} +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 + }, + { + ISIS_CLV_IPV6_GBL_INT_ADDR, + "IPv6 Global Interface Address", + &ett_isis_hello_clv_ipv6_glb_int_addr, + dissect_hello_ipv6_glb_int_addr_clv + }, + { + ISIS_CLV_REVERSE_METRIC, + "Reverse Metric", + &ett_isis_hello_clv_reverse_metric, + dissect_hello_reverse_metric_clv + }, + { + ISIS_CLV_BFD_ENABLED, + "BFD Enabled", + &ett_isis_hello_clv_bfd_enabled, + dissect_hello_bfd_enabled_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 + }, + { + ISIS_CLV_IPV6_GBL_INT_ADDR, + "IPv6 Global Interface Address", + &ett_isis_hello_clv_ipv6_glb_int_addr, + dissect_hello_ipv6_glb_int_addr_clv + }, + { + ISIS_CLV_BFD_ENABLED, + "BFD Enabled", + &ett_isis_hello_clv_bfd_enabled, + dissect_hello_bfd_enabled_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 + }, + { + ISIS_CLV_IPV6_GBL_INT_ADDR, + "IPv6 Global Interface Address", + &ett_isis_hello_clv_ipv6_glb_int_addr, + dissect_hello_ipv6_glb_int_addr_clv + }, + { + ISIS_CLV_BFD_ENABLED, + "BFD Enabled", + &ett_isis_hello_clv_bfd_enabled, + dissect_hello_bfd_enabled_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, isis_data_t *isis) +{ + proto_item *ti; + proto_tree *hello_tree; + guint16 pdu_length; + gboolean pdu_length_too_short = FALSE; + + /* + * We are passed a tvbuff for the entire ISIS PDU, because some ISIS + * PDUs may contain a checksum CLV, and that's a checksum covering + * the entire PDU. Skip the part of the header that's already been + * dissected. + */ + offset += 8; + + 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); + + if (isis->header_length < 8 + 1) { + /* Not large enough to include the part of the header that + we dissect here. */ + expert_add_info(pinfo, isis->header_length_item, isis->ei_bad_header_length); + return; + } + 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; + + if (isis->header_length < 8 + 1 + isis->system_id_len) { + /* Not large enough to include the part of the header that + we dissect here. */ + expert_add_info(pinfo, isis->header_length_item, isis->ei_bad_header_length); + return; + } + proto_tree_add_item(hello_tree, hf_isis_hello_source_id, tvb, offset, isis->system_id_len, ENC_NA); + col_append_fstr(pinfo->cinfo, COL_INFO, ", System-ID: %s", tvb_print_system_id( pinfo->pool, tvb, offset, isis->system_id_len )); + offset += isis->system_id_len; + + if (isis->header_length < 8 + 1 + isis->system_id_len + 2) { + /* Not large enough to include the part of the header that + we dissect here. */ + expert_add_info(pinfo, isis->header_length_item, isis->ei_bad_header_length); + return; + } + proto_tree_add_item(hello_tree, hf_isis_hello_holding_timer, tvb, + offset, 2, ENC_BIG_ENDIAN); + offset += 2; + + if (isis->header_length < 8 + 1 + isis->system_id_len + 2 + 2) { + /* Not large enough to include the part of the header that + we dissect here. */ + expert_add_info(pinfo, isis->header_length_item, isis->ei_bad_header_length); + return; + } + pdu_length = tvb_get_ntohs(tvb, offset); + ti = proto_tree_add_uint(hello_tree, hf_isis_hello_pdu_length, tvb, + offset, 2, pdu_length); + if (pdu_length < isis->header_length) { + expert_add_info(pinfo, ti, &ei_isis_hello_short_pdu); + pdu_length_too_short = TRUE; + } else if (pdu_length > tvb_reported_length(tvb) + isis->header_length) { + expert_add_info(pinfo, ti, &ei_isis_hello_long_pdu); + } + offset += 2; + + if (opts == clv_ptp_hello_opts) { + if (isis->header_length < 8 + 1 + isis->system_id_len + 2 + 2 + 1) { + /* Not large enough to include the part of the header that + we dissect here. */ + expert_add_info(pinfo, isis->header_length_item, isis->ei_bad_header_length); + return; + } + proto_tree_add_item(hello_tree, hf_isis_hello_local_circuit_id, tvb, + offset, 1, ENC_BIG_ENDIAN ); + offset += 1; + } else { + if (isis->header_length < 8 + 1 + isis->system_id_len + 2 + 2 + 1) { + /* Not large enough to include the part of the header that + we dissect here. */ + expert_add_info(pinfo, isis->header_length_item, isis->ei_bad_header_length); + return; + } + 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; + + if (isis->header_length < 8 + 1 + isis->system_id_len + 2 + 2 + 1 + isis->system_id_len + 1) { + /* Not large enough to include the part of the header that + we dissect here. */ + expert_add_info(pinfo, isis->header_length_item, isis->ei_bad_header_length); + return; + } + proto_tree_add_item(hello_tree, hf_isis_hello_lan_id, tvb, offset, isis->system_id_len + 1, ENC_NA); + offset += isis->system_id_len + 1; + } + + if (pdu_length_too_short) { + return; + } + /* + * Now, we need to decode our CLVs. We need to pass in + * our list of valid ones! + */ + isis->pdu_length = pdu_length; + isis_dissect_clvs(tvb, pinfo, hello_tree, offset, + opts, &ei_isis_hello_short_clv, isis, 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); + 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); + 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); + 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, NULL, 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, NULL, 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, NULL, 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, { "NLPID", "isis.hello.clv_nlpid.nlpid", FT_UINT8, BASE_HEX, 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), 0x0fff, 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_checksum_status, { "Checksum Status", "isis.hello.checksum.status", FT_UINT8, BASE_NONE, VALS(proto_checksum_vals), 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, 0x0fff, 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, 0x0fff, 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, 0x0fff, NULL, HFILL }}, + { &hf_isis_hello_af_end_vlan, { "End VLAN", "isis.hello.af.end_vlan", FT_UINT16, BASE_DEC, NULL, 0x0fff, 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 }}, + { &hf_isis_hello_reverse_metric_flags, { "Flags", "isis.hello.reverse_metric.flags", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + { &hf_isis_hello_reverse_metric_flag_reserved, { "Reserved", "isis.hello.reverse_metric.flags.reserved", FT_UINT8, BASE_HEX, NULL, 0xFC, NULL, HFILL }}, + { &hf_isis_hello_reverse_metric_flag_u, { "U", "isis.hello.reverse_metric.flags.u", FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x02, NULL, HFILL }}, + { &hf_isis_hello_reverse_metric_flag_w, { "W", "isis.hello.reverse_metric.flags.w", FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x01, NULL, HFILL }}, + { &hf_isis_hello_reverse_metric_metric, { "Metric", "isis.hello.reverse_metric.metric", FT_UINT24, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_isis_hello_reverse_metric_sub_length, { "Sub-TLV length", "isis.hello.reverse_metric.sub_length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + { &hf_isis_hello_reverse_metric_sub_data, { "Sub-TLV data", "isis.hello.reverse_metric.sub_data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, + { &hf_isis_hello_bfd_enabled_nlpid, { "NLPID", "isis.hello.bfd_enabled.nlpid", FT_UINT8, BASE_HEX, VALS(nlpid_vals), 0x0, NULL, HFILL }}, + + /* rfc6119 */ + { &hf_isis_hello_clv_ipv6_glb_int_addr, + { "IPv6 Global interface address", "isis.hello.clv_ipv6_glb_int_addr", + FT_IPv6, 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_nlpid_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, + &ett_isis_hello_clv_reverse_metric, + &ett_isis_hello_clv_bfd_enabled, + &ett_isis_hello_clv_ipv6_glb_int_addr, /* CLV 233, rfc6119 */ + &ett_isis_hello_reverse_metric_flags + }; + + static ei_register_info ei[] = { + { &ei_isis_hello_short_pdu, { "isis.lsp.hello_pdu", PI_MALFORMED, PI_ERROR, "PDU length less than header length", EXPFILL }}, + { &ei_isis_hello_long_pdu, { "isis.lsp.hello_pdu", PI_MALFORMED, PI_ERROR, "PDU length greater than packet length", EXPFILL }}, + { &ei_isis_hello_bad_checksum, { "isis.hello.bad_checksum", PI_CHECKSUM, PI_ERROR, "Bad checksum", 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_short_clv, { "isis.hello.short_clv", PI_MALFORMED, PI_ERROR, "Short CLV", 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 - 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: + */ |