forked from osmocom/wireshark
696 lines
24 KiB
C
696 lines
24 KiB
C
/* packet-trmac.c
|
|
* Routines for Token-Ring Media Access Control
|
|
* Gilbert Ramirez <gram@alumni.rice.edu>
|
|
*
|
|
* 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/to_str.h>
|
|
#include <epan/expert.h>
|
|
|
|
void proto_register_trmac(void);
|
|
|
|
static int proto_trmac = -1;
|
|
static int hf_trmac_mv = -1;
|
|
static int hf_trmac_length = -1;
|
|
static int hf_trmac_srcclass = -1;
|
|
static int hf_trmac_dstclass = -1;
|
|
static int hf_trmac_sv_len = -1;
|
|
static int hf_trmac_sv_id = -1;
|
|
static int hf_trmac_errors_iso = -1;
|
|
static int hf_trmac_errors_line = -1;
|
|
static int hf_trmac_errors_internal = -1;
|
|
static int hf_trmac_errors_burst = -1;
|
|
static int hf_trmac_errors_ac = -1;
|
|
static int hf_trmac_errors_abort = -1;
|
|
static int hf_trmac_errors_noniso = -1;
|
|
static int hf_trmac_errors_lost = -1;
|
|
static int hf_trmac_errors_congestion = -1;
|
|
static int hf_trmac_errors_fc = -1;
|
|
static int hf_trmac_errors_freq = -1;
|
|
static int hf_trmac_errors_token = -1;
|
|
static int hf_trmac_naun = -1;
|
|
static int hf_trmac_beacon_type = -1;
|
|
static int hf_trmac_assign_physical_drop_number = -1;
|
|
static int hf_trmac_error_code = -1;
|
|
static int hf_trmac_group_address32 = -1;
|
|
static int hf_trmac_transmit_status_code = -1;
|
|
static int hf_trmac_station_identifier = -1;
|
|
static int hf_trmac_sa_of_last_amp_or_smp_frame = -1;
|
|
static int hf_trmac_error_report_timer_value = -1;
|
|
static int hf_trmac_individual_address_count = -1;
|
|
static int hf_trmac_correlator = -1;
|
|
static int hf_trmac_group_address_ether = -1;
|
|
static int hf_trmac_authorized_access_priority = -1;
|
|
static int hf_trmac_physical_drop_number = -1;
|
|
static int hf_trmac_authorized_function_classes = -1;
|
|
static int hf_trmac_local_ring_number = -1;
|
|
static int hf_trmac_functional_addresses = -1;
|
|
/* Generated from convert_proto_tree_add_text.pl */
|
|
static int hf_trmac_unknown_subvector = -1;
|
|
static int hf_trmac_response_code48 = -1;
|
|
static int hf_trmac_product_instance_id = -1;
|
|
static int hf_trmac_ring_station_version_number = -1;
|
|
static int hf_trmac_wrap_data = -1;
|
|
static int hf_trmac_ring_station_status = -1;
|
|
static int hf_trmac_frame_forward = -1;
|
|
static int hf_trmac_response_code32 = -1;
|
|
|
|
static gint ett_tr_mac = -1;
|
|
static gint ett_tr_sv = -1;
|
|
static gint ett_tr_ierr_cnt = -1;
|
|
static gint ett_tr_nerr_cnt = -1;
|
|
|
|
static expert_field ei_trmac_sv_len = EI_INIT;
|
|
|
|
/* Major Vector */
|
|
static const value_string major_vector_vs[] = {
|
|
{ 0x00, "Response" },
|
|
{ 0x02, "Beacon" },
|
|
{ 0x03, "Claim Token" },
|
|
{ 0x04, "Ring Purge" },
|
|
{ 0x05, "Active Monitor Present" },
|
|
{ 0x06, "Standby Monitor Present" },
|
|
{ 0x07, "Duplicate Address Test" },
|
|
{ 0x09, "Transmit Forward" },
|
|
{ 0x0B, "Remove Ring Station" },
|
|
{ 0x0C, "Change Parameters" },
|
|
{ 0x0D, "Initialize Ring Station" },
|
|
{ 0x0E, "Request Ring Station Address" },
|
|
{ 0x0F, "Request Ring Station Address" },
|
|
{ 0x10, "Request Ring Station Attachments" },
|
|
{ 0x20, "Request Initialization" },
|
|
{ 0x22, "Report Ring Station Address" },
|
|
{ 0x23, "Report Ring Station State" },
|
|
{ 0x24, "Report Ring Station Attachments" },
|
|
{ 0x25, "Report New Active Monitor" },
|
|
{ 0x26, "Report NAUN Change" },
|
|
{ 0x27, "Report Poll Error" },
|
|
{ 0x28, "Report Monitor Errors" },
|
|
{ 0x29, "Report Error" },
|
|
{ 0x2A, "Report Transmit Forward" },
|
|
{ 0x00, NULL }
|
|
};
|
|
static value_string_ext major_vector_vs_ext = VALUE_STRING_EXT_INIT(major_vector_vs);
|
|
|
|
/* Src. and Dest. Classes */
|
|
static const value_string classes_vs[] = {
|
|
{ 0x00, "Ring Station" },
|
|
{ 0x01, "LLC Manager" },
|
|
{ 0x04, "Configuration Report Server" },
|
|
{ 0x05, "Ring Parameter Server" },
|
|
{ 0x06, "Ring Error Monitor" },
|
|
{ 0x00, NULL }
|
|
};
|
|
|
|
static const value_string subvector_vs[] = {
|
|
{ 0x01, "Beacon Type" },
|
|
{ 0x02, "Upstream Neighbor's Address" },
|
|
{ 0x03, "Local Ring Number" },
|
|
{ 0x04, "Assign Physical Drop Number" },
|
|
{ 0x05, "Error Report Timer Value" },
|
|
{ 0x06, "Authorized Function Classes" },
|
|
{ 0x07, "Authorized Access Priority" },
|
|
{ 0x09, "Correlator" },
|
|
{ 0x0A, "SA of Last AMP or SMP Frame" },
|
|
{ 0x0B, "Physical Drop Number" },
|
|
{ 0x20, "Response Code" },
|
|
{ 0x21, "Individual Address Count" },
|
|
{ 0x22, "Product Instance ID" },
|
|
{ 0x23, "Ring Station Version Number" },
|
|
{ 0x26, "Wrap Data" },
|
|
{ 0x27, "Frame Forward" },
|
|
{ 0x28, "Station Identifier" },
|
|
{ 0x29, "Ring Station Status" },
|
|
{ 0x2A, "Transmit Forward Status Code" },
|
|
{ 0x2B, "Group Addresses" },
|
|
{ 0x2C, "Functional Addresses" },
|
|
{ 0x2D, "Isolating Error Counts" },
|
|
{ 0x2E, "Non-Isolating Error Counts" },
|
|
{ 0x2F, "Function Request ID" },
|
|
{ 0x30, "Error Code" },
|
|
{ 0x00, NULL }
|
|
};
|
|
static value_string_ext subvector_vs_ext = VALUE_STRING_EXT_INIT(subvector_vs);
|
|
|
|
static const value_string beacon_vs[] = {
|
|
{ 0x00, "Recovery mode set" },
|
|
{ 0x01, "Signal loss error" },
|
|
{ 0x02, "Streaming signal not Claim Token MAC frame" },
|
|
{ 0x03, "Streaming signal, Claim Token MAC frame" },
|
|
{ 0x00, NULL }
|
|
};
|
|
|
|
/* Sub-vectors */
|
|
static int
|
|
sv_text(tvbuff_t *tvb, int svoff, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
guint sv_length, sv_id;
|
|
guint16 beacon_type, ring;
|
|
guint32 error_report_timer_value;
|
|
|
|
proto_tree *sv_tree, *sv_subtree;
|
|
proto_item *sv_item, *len_item, *ti;
|
|
|
|
guchar errors[6]; /* isolating or non-isolating */
|
|
|
|
sv_tree = proto_tree_add_subtree(tree, tvb, svoff+0, 1, ett_tr_sv, &sv_item, "Subvector");
|
|
|
|
sv_length = tvb_get_guint8(tvb, svoff+0);
|
|
len_item = proto_tree_add_item(sv_tree, hf_trmac_sv_len, tvb, svoff+0, 1, ENC_BIG_ENDIAN);
|
|
|
|
/* Check the SV length; it must be at least 2, to include
|
|
the subvector length and indicator. */
|
|
if (sv_length < 2) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Invalid subvector: length < 2");
|
|
return 0; /* tells our caller to give up */
|
|
}
|
|
|
|
sv_id = tvb_get_guint8(tvb, svoff+1);
|
|
proto_tree_add_item(sv_tree, hf_trmac_sv_id, tvb, svoff+1, 1, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(sv_item, " (%s)", val_to_str_ext(sv_id, &subvector_vs_ext, "Unknown subvector ID 0x%02X"));
|
|
|
|
switch(sv_id) {
|
|
case 0x01: /* Beacon Type */
|
|
if (sv_length != 4) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 4");
|
|
break;
|
|
}
|
|
beacon_type = tvb_get_ntohs(tvb, svoff+2);
|
|
proto_tree_add_item(sv_tree, hf_trmac_beacon_type, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(sv_item,
|
|
": %s", val_to_str(beacon_type, beacon_vs, "Illegal value: %d"));
|
|
break;
|
|
|
|
case 0x02: /* Upstream Neighbor's Address */
|
|
if (sv_length != 8) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 8");
|
|
break;
|
|
}
|
|
proto_tree_add_item(sv_tree, hf_trmac_naun, tvb, svoff+2, sv_length-2, ENC_NA);
|
|
proto_item_append_text(sv_item, ": %s",
|
|
tvb_ether_to_str(pinfo->pool, tvb, svoff+2));
|
|
break;
|
|
|
|
case 0x03: /* Local Ring Number */
|
|
if (sv_length != 4) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 4");
|
|
break;
|
|
}
|
|
ring = tvb_get_ntohs(tvb, svoff+2);
|
|
proto_tree_add_item(sv_tree, hf_trmac_local_ring_number, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(sv_item,
|
|
": 0x%04X (%d)", ring, ring);
|
|
break;
|
|
|
|
case 0x04: /* Assign Physical Drop Number */
|
|
if (sv_length != 6) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 6");
|
|
break;
|
|
}
|
|
proto_tree_add_item(sv_tree, hf_trmac_assign_physical_drop_number, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(sv_item,
|
|
": 0x%08X", tvb_get_ntohl(tvb, svoff+2) );
|
|
break;
|
|
|
|
case 0x05: /* Error Report Timer Value */
|
|
if (sv_length != 4) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 4");
|
|
break;
|
|
}
|
|
|
|
error_report_timer_value = 10 * tvb_get_ntohs(tvb, svoff+2);
|
|
proto_tree_add_uint(sv_tree, hf_trmac_error_report_timer_value, tvb, svoff+2, sv_length-2, error_report_timer_value);
|
|
proto_item_append_text(sv_item,
|
|
": %u ms", error_report_timer_value );
|
|
break;
|
|
|
|
case 0x06: /* Authorized Function Classes */
|
|
if (sv_length != 4) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 4");
|
|
break;
|
|
}
|
|
proto_tree_add_item(sv_tree, hf_trmac_authorized_function_classes, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(sv_item,
|
|
": %04X", tvb_get_ntohs(tvb, svoff+2) );
|
|
break;
|
|
|
|
case 0x07: /* Authorized Access Priority */
|
|
if (sv_length != 4) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 4");
|
|
break;
|
|
}
|
|
proto_tree_add_item(sv_tree, hf_trmac_authorized_access_priority, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(sv_item,
|
|
": %04X", tvb_get_ntohs(tvb, svoff+2) );
|
|
break;
|
|
|
|
case 0x09: /* Correlator */
|
|
if (sv_length != 4) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 4");
|
|
break;
|
|
}
|
|
proto_tree_add_item(sv_tree, hf_trmac_correlator, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(sv_item,
|
|
": %04X", tvb_get_ntohs(tvb, svoff+2) );
|
|
break;
|
|
|
|
case 0x0A: /* SA of Last AMP or SMP Frame */
|
|
if (sv_length != 8) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 8");
|
|
break;
|
|
}
|
|
proto_tree_add_item(sv_tree, hf_trmac_sa_of_last_amp_or_smp_frame, tvb, svoff+2, sv_length-2, ENC_NA);
|
|
proto_item_append_text(sv_item,
|
|
": %s",
|
|
tvb_ether_to_str(pinfo->pool, tvb, svoff+2));
|
|
break;
|
|
|
|
case 0x0B: /* Physical Drop Number */
|
|
if (sv_length != 6) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 6");
|
|
break;
|
|
}
|
|
proto_tree_add_item(sv_tree, hf_trmac_physical_drop_number, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(sv_item,
|
|
": 0x%08X", tvb_get_ntohl(tvb, svoff+2) );
|
|
break;
|
|
|
|
case 0x20: /* Response Code */
|
|
if (sv_length != 4 && sv_length != 6) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 4 and != 6");
|
|
break;
|
|
}
|
|
if (sv_length == 4) {
|
|
proto_tree_add_uint_format_value(sv_tree, hf_trmac_response_code32, tvb, svoff+2, sv_length-2,
|
|
tvb_get_ntohl(tvb, svoff+2), "0x%04X 0x%02X 0x%02x",
|
|
tvb_get_ntohs(tvb, svoff+2), tvb_get_guint8(tvb, svoff+4), tvb_get_guint8(tvb, svoff+5));
|
|
proto_item_append_text(sv_item,
|
|
": 0x%04X 0x%02X 0x%02x",
|
|
tvb_get_ntohs(tvb, svoff+2),
|
|
tvb_get_guint8(tvb, svoff+4),
|
|
tvb_get_guint8(tvb, svoff+5));
|
|
} else {
|
|
proto_tree_add_uint64_format_value(sv_tree, hf_trmac_response_code48, tvb, svoff+2, sv_length-2,
|
|
tvb_get_ntoh48(tvb, svoff+2), "0x%04X 0x%02X 0x%06X",
|
|
tvb_get_ntohs(tvb, svoff+2),
|
|
tvb_get_guint8(tvb, svoff+4),
|
|
tvb_get_ntoh24(tvb, svoff+5));
|
|
proto_item_append_text(sv_item,
|
|
": 0x%04X 0x%02X 0x%06X",
|
|
tvb_get_ntohs(tvb, svoff+2),
|
|
tvb_get_guint8(tvb, svoff+4),
|
|
tvb_get_ntoh24(tvb, svoff+5));
|
|
}
|
|
break;
|
|
|
|
case 0x21: /* Individual Address Count */
|
|
if (sv_length != 4) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 4");
|
|
break;
|
|
}
|
|
proto_tree_add_item(sv_tree, hf_trmac_individual_address_count, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(sv_item,
|
|
": %u", tvb_get_ntohs(tvb, svoff+2) );
|
|
break;
|
|
|
|
case 0x22: /* Product Instance ID */
|
|
proto_tree_add_item(sv_tree, hf_trmac_product_instance_id, tvb, svoff+2, sv_length-2, ENC_NA);
|
|
break;
|
|
|
|
case 0x23: /* Ring Station Version Number */
|
|
proto_tree_add_item(sv_tree, hf_trmac_ring_station_version_number, tvb, svoff+2, sv_length-2, ENC_NA);
|
|
break;
|
|
|
|
case 0x26: /* Wrap data */
|
|
proto_tree_add_item(sv_tree, hf_trmac_wrap_data, tvb, svoff+2, sv_length-2, ENC_NA);
|
|
break;
|
|
|
|
case 0x27: /* Frame Forward */
|
|
proto_tree_add_item(sv_tree, hf_trmac_frame_forward, tvb, svoff+2, sv_length-2, ENC_NA);
|
|
break;
|
|
|
|
case 0x28: /* Station Identifier */
|
|
if (sv_length != 8) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 8");
|
|
break;
|
|
}
|
|
proto_tree_add_item(sv_tree, hf_trmac_station_identifier, tvb, svoff+2, sv_length-2, ENC_NA);
|
|
proto_item_append_text(sv_item,
|
|
": %s",
|
|
tvb_ether_to_str(pinfo->pool, tvb, svoff+2));
|
|
break;
|
|
|
|
case 0x29: /* Ring Station Status */
|
|
proto_tree_add_item(sv_tree, hf_trmac_ring_station_status, tvb, svoff+2, sv_length-2, ENC_NA);
|
|
break;
|
|
|
|
case 0x2A: /* Transmit Status Code */
|
|
if (sv_length != 4) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 4");
|
|
break;
|
|
}
|
|
proto_tree_add_item(sv_tree, hf_trmac_transmit_status_code, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(sv_item,
|
|
": %04X", tvb_get_ntohs(tvb, svoff+2) );
|
|
break;
|
|
|
|
case 0x2B: /* Group Address */
|
|
if (sv_length != 6 && sv_length != 8) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 6 and != 8");
|
|
break;
|
|
}
|
|
if (sv_length == 6) {
|
|
proto_tree_add_item(sv_tree, hf_trmac_group_address32, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(sv_item,
|
|
": %08X", tvb_get_ntohl(tvb, svoff+2) );
|
|
} else {
|
|
proto_tree_add_item(sv_tree, hf_trmac_group_address_ether, tvb, svoff+2, sv_length-2, ENC_NA);
|
|
proto_item_append_text(sv_item,
|
|
": %s",
|
|
tvb_ether_to_str(pinfo->pool, tvb, svoff+2));
|
|
}
|
|
break;
|
|
|
|
case 0x2C: /* Functional Addresses */
|
|
if (sv_length != 6) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 6");
|
|
break;
|
|
}
|
|
proto_tree_add_item(sv_tree, hf_trmac_functional_addresses, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(sv_item,
|
|
": %08X", tvb_get_ntohl(tvb, svoff+2) );
|
|
break;
|
|
|
|
case 0x2D: /* Isolating Error Counts */
|
|
if (sv_length != 8) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 8");
|
|
break;
|
|
}
|
|
tvb_memcpy(tvb, errors, svoff+2, 6);
|
|
ti = proto_tree_add_uint(sv_tree, hf_trmac_errors_iso, tvb, svoff+2, sv_length-2,
|
|
errors[0] + errors[1] + errors[2] + errors[3] + errors[4]);
|
|
sv_subtree = proto_item_add_subtree(ti, ett_tr_ierr_cnt);
|
|
|
|
proto_tree_add_uint(sv_subtree, hf_trmac_errors_line, tvb, svoff+2, 1, errors[0]);
|
|
proto_tree_add_uint(sv_subtree, hf_trmac_errors_internal, tvb, svoff+3, 1, errors[1]);
|
|
proto_tree_add_uint(sv_subtree, hf_trmac_errors_burst, tvb, svoff+4, 1, errors[2]);
|
|
proto_tree_add_uint(sv_subtree, hf_trmac_errors_ac, tvb, svoff+5, 1, errors[3]);
|
|
proto_tree_add_uint(sv_subtree, hf_trmac_errors_abort, tvb, svoff+6, 1, errors[4]);
|
|
|
|
break;
|
|
|
|
case 0x2E: /* Non-Isolating Error Counts */
|
|
if (sv_length != 8) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 8");
|
|
break;
|
|
}
|
|
tvb_memcpy(tvb, errors, svoff+2, 6);
|
|
ti = proto_tree_add_uint(sv_tree, hf_trmac_errors_noniso, tvb, svoff+2, sv_length-2,
|
|
errors[0] + errors[1] + errors[2] + errors[3] + errors[4]);
|
|
sv_subtree = proto_item_add_subtree(ti, ett_tr_nerr_cnt);
|
|
|
|
proto_tree_add_uint(sv_subtree, hf_trmac_errors_lost, tvb, svoff+2, 1, errors[0]);
|
|
proto_tree_add_uint(sv_subtree, hf_trmac_errors_congestion, tvb, svoff+3, 1, errors[1]);
|
|
proto_tree_add_uint(sv_subtree, hf_trmac_errors_fc, tvb, svoff+4, 1, errors[2]);
|
|
proto_tree_add_uint(sv_subtree, hf_trmac_errors_freq, tvb, svoff+5, 1, errors[3]);
|
|
proto_tree_add_uint(sv_subtree, hf_trmac_errors_token, tvb, svoff+6, 1, errors[4]);
|
|
break;
|
|
|
|
case 0x30: /* Error Code */
|
|
if (sv_length != 4) {
|
|
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
|
|
"Subvector length is != 4");
|
|
break;
|
|
}
|
|
proto_tree_add_item(sv_tree, hf_trmac_error_code, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(sv_item,
|
|
": %04X", tvb_get_ntohs(tvb, svoff+2) );
|
|
break;
|
|
|
|
default: /* Unknown */
|
|
proto_tree_add_item(sv_tree, hf_trmac_unknown_subvector, tvb, svoff+2, sv_length-2, ENC_NA);
|
|
break;
|
|
}
|
|
return sv_length;
|
|
}
|
|
|
|
static int
|
|
dissect_trmac(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
proto_tree *mac_tree;
|
|
proto_item *ti;
|
|
int sv_additional;
|
|
guint32 mv_val, mv_length, sv_offset;
|
|
|
|
if (tvb_captured_length(tvb) < 3)
|
|
return 0;
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "TR MAC");
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
ti = proto_tree_add_item(tree, proto_trmac, tvb, 0, -1, ENC_NA);
|
|
mac_tree = proto_item_add_subtree(ti, ett_tr_mac);
|
|
|
|
proto_tree_add_item_ret_uint(mac_tree, hf_trmac_mv, tvb, 3, 1, ENC_NA, &mv_val);
|
|
proto_tree_add_item_ret_uint(mac_tree, hf_trmac_length, tvb, 0, 2, ENC_BIG_ENDIAN, &mv_length);
|
|
proto_item_set_len(ti, mv_length);
|
|
proto_tree_add_item(mac_tree, hf_trmac_srcclass, tvb, 2, 1, ENC_NA);
|
|
proto_tree_add_item(mac_tree, hf_trmac_dstclass, tvb, 2, 1, ENC_NA);
|
|
|
|
/* Interpret the major vector */
|
|
col_add_str(pinfo->cinfo, COL_INFO,
|
|
val_to_str_ext(mv_val, &major_vector_vs_ext, "Unknown Major Vector: %u"));
|
|
|
|
/* interpret the subvectors */
|
|
sv_offset = 4;
|
|
while (sv_offset < mv_length) {
|
|
sv_additional = sv_text(tvb, sv_offset, pinfo, mac_tree);
|
|
|
|
/* if this is a bad packet, we could get a 0-length added here,
|
|
* looping forever */
|
|
if (sv_additional > 0)
|
|
sv_offset += sv_additional;
|
|
else
|
|
break;
|
|
}
|
|
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
void
|
|
proto_register_trmac(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_trmac_mv,
|
|
{ "Major Vector", "trmac.mvec", FT_UINT8, BASE_HEX|BASE_EXT_STRING, &major_vector_vs_ext, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_length,
|
|
{ "Total Length", "trmac.length", FT_UINT8, BASE_DEC|BASE_UNIT_STRING, &units_byte_bytes, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_srcclass,
|
|
{ "Source Class", "trmac.srcclass", FT_UINT8, BASE_HEX, VALS(classes_vs), 0x0F,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_dstclass,
|
|
{ "Destination Class", "trmac.dstclass", FT_UINT8, BASE_HEX, VALS(classes_vs), 0xF0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_sv_len,
|
|
{ "Subvector Length", "trmac.svec.len", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_sv_id,
|
|
{ "Subvector Identifier", "trmac.svec.id", FT_UINT8, BASE_HEX|BASE_EXT_STRING, &subvector_vs_ext, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_errors_iso,
|
|
{ "Isolating Errors", "trmac.errors.iso", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_errors_line,
|
|
{ "Line Errors", "trmac.errors.line", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_errors_internal,
|
|
{ "Internal Errors", "trmac.errors.internal", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_errors_burst,
|
|
{ "Burst Errors", "trmac.errors.burst", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_errors_ac,
|
|
{ "A/C Errors", "trmac.errors.ac", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_errors_abort,
|
|
{ "Abort Delimiter Transmitted Errors", "trmac.errors.abort", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_errors_noniso,
|
|
{ "Non-Isolating Errors", "trmac.errors.noniso", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_errors_lost,
|
|
{ "Lost Frame Errors", "trmac.errors.lost", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_errors_congestion,
|
|
{ "Receiver Congestion Errors", "trmac.errors.congestion", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_errors_fc,
|
|
{ "Frame-Copied Errors", "trmac.errors.fc", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_errors_freq,
|
|
{ "Frequency Errors", "trmac.errors.freq", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_errors_token,
|
|
{ "Token Errors", "trmac.errors.token", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_naun,
|
|
{ "Upstream Neighbor's Address", "trmac.naun", FT_ETHER, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_beacon_type,
|
|
{ "Beacon Type", "trmac.beacon_type", FT_UINT16, BASE_DEC, VALS(beacon_vs), 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_local_ring_number,
|
|
{ "Local Ring Number", "trmac.local_ring_number", FT_UINT16, BASE_HEX_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_assign_physical_drop_number,
|
|
{ "Assign Physical Drop Number", "trmac.assign_physical_drop_number", FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_error_report_timer_value,
|
|
{ "Error Report Timer Value", "trmac.error_report_timer_value", FT_UINT16, BASE_DEC|BASE_UNIT_STRING, &units_milliseconds, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_authorized_function_classes,
|
|
{ "Authorized Function Classes", "trmac.authorized_function_classes", FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_authorized_access_priority,
|
|
{ "Authorized Access Priority", "trmac.authorized_access_priority", FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_correlator,
|
|
{ "Correlator", "trmac.correlator", FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_sa_of_last_amp_or_smp_frame,
|
|
{ "SA of Last AMP or SMP Frame", "trmac.sa_of_last_amp_or_smp_frame", FT_ETHER, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_physical_drop_number,
|
|
{ "Physical Drop Number", "trmac.physical_drop_number", FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_individual_address_count,
|
|
{ "Individual Address Count", "trmac.individual_address_count", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_station_identifier,
|
|
{ "Station Identifier", "trmac.station_identifier", FT_ETHER, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_transmit_status_code,
|
|
{ "Transmit Status Code", "trmac.transmit_status_code", FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_group_address32,
|
|
{ "Group Address", "trmac.group_addres32s", FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_group_address_ether,
|
|
{ "Group Address", "trmac.group_address_ether", FT_ETHER, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_functional_addresses,
|
|
{ "Functional Addresses", "trmac.functional_addresses", FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_trmac_error_code,
|
|
{ "Error Code", "trmac.error_code", FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
/* Generated from convert_proto_tree_add_text.pl */
|
|
{ &hf_trmac_response_code32, { "Response Code", "trmac.response_code", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_trmac_response_code48, { "Response Code", "trmac.response_code48", FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_trmac_product_instance_id, { "Product Instance ID", "trmac.product_instance_id", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_trmac_ring_station_version_number, { "Ring Station Version Number", "trmac.ring_station_version_number", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_trmac_wrap_data, { "Wrap Data", "trmac.wrap_data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_trmac_frame_forward, { "Frame Forward", "trmac.frame_forward", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_trmac_ring_station_status, { "Ring Station Status", "trmac.ring_station_status", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_trmac_unknown_subvector, { "Unknown Subvector", "trmac.unknown_subvector", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
|
|
};
|
|
static gint *ett[] = {
|
|
&ett_tr_mac,
|
|
&ett_tr_sv,
|
|
&ett_tr_ierr_cnt,
|
|
&ett_tr_nerr_cnt,
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_trmac_sv_len, { "trmac.svec.len.invalid", PI_MALFORMED, PI_ERROR, "Invalid length", EXPFILL }},
|
|
};
|
|
|
|
expert_module_t* expert_trmac;
|
|
|
|
proto_trmac = proto_register_protocol("Token-Ring Media Access Control", "TR MAC", "trmac");
|
|
proto_register_field_array(proto_trmac, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
expert_trmac = expert_register_protocol(proto_trmac);
|
|
expert_register_field_array(expert_trmac, ei, array_length(ei));
|
|
|
|
register_dissector("trmac", dissect_trmac, proto_trmac);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
*/
|