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wireshark/epan/dissectors/packet-enrp.c

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/* packet-enrp.c
* Routines for Endpoint Handlespace Redundancy Protocol (ENRP)
* It is hopefully (needs testing) compliant to
* RFC 5353
* RFC 5354
* RFC 5356
* https://tools.ietf.org/html/draft-dreibholz-rserpool-enrp-takeover-21
*
* Copyright 2008-2021 Thomas Dreibholz <dreibh [AT] iem.uni-due.de>
* Copyright 2004-2007 Michael Tüxen <tuexen [AT] fh-muenster.de>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* Copied from README.developer
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/to_str.h>
#include <epan/sctpppids.h>
#include <epan/stat_tap_ui.h>
#include <wsutil/str_util.h>
#include "packet-asap+enrp-common.h"
void proto_register_enrp(void);
void proto_reg_handoff_enrp(void);
/* Initialize the protocol and registered fields */
static int enrp_tap = -1;
static int proto_enrp = -1;
static int hf_cause_code = -1;
static int hf_cause_length = -1;
static int hf_cause_info = -1;
static int hf_cause_padding = -1;
static int hf_message_type = -1;
static int hf_message_flags = -1;
static int hf_message_length = -1;
static int hf_message_value = -1;
static int hf_parameter_type = -1;
static int hf_parameter_length = -1;
static int hf_parameter_value = -1;
static int hf_parameter_padding = -1;
static int hf_parameter_ipv4_address = -1;
static int hf_parameter_ipv6_address = -1;
static int hf_dccp_port = -1;
static int hf_dccp_reserved = -1;
static int hf_dccp_service_code = -1;
static int hf_sctp_port = -1;
static int hf_transport_use = -1;
static int hf_tcp_port = -1;
static int hf_udp_port = -1;
static int hf_udp_reserved = -1;
static int hf_udp_lite_port = -1;
static int hf_udp_lite_reserved = -1;
static int hf_policy_type = -1;
static int hf_policy_value = -1;
static int hf_policy_weight = -1;
static int hf_policy_priority = -1;
static int hf_policy_load = -1;
static int hf_policy_degradation = -1;
static int hf_policy_loaddpf = -1;
static int hf_policy_weightdpf = -1;
static int hf_policy_distance = -1;
static int hf_pool_handle = -1;
static int hf_pe_pe_identifier = -1;
static int hf_home_enrp_id = -1;
static int hf_reg_life = -1;
static int hf_server_identifier = -1;
static int hf_cookie = -1;
static int hf_pe_identifier = -1;
static int hf_pe_checksum = -1;
static int hf_sender_servers_id = -1;
static int hf_receiver_servers_id = -1;
static int hf_target_servers_id = -1;
static int hf_update_action = -1;
static int hf_pmu_reserved = -1;
static int hf_reply_required_bit = -1;
static int hf_own_children_only_bit = -1;
static int hf_more_to_send_bit = -1;
static int hf_reject_bit = -1;
static int hf_tos_bit = -1;
/* Initialize the subtree pointers */
static gint ett_enrp = -1;
static gint ett_enrp_parameter = -1;
static gint ett_enrp_cause = -1;
static gint ett_enrp_flags = -1;
static guint64 enrp_total_msgs = 0;
static guint64 enrp_total_bytes = 0;
static void
dissect_parameters(tvbuff_t *, proto_tree *);
static void
dissect_parameter(tvbuff_t *, proto_tree *);
static int
dissect_enrp(tvbuff_t *, packet_info *, proto_tree *, void*);
#define ENRP_UDP_PORT 9901
#define ENRP_SCTP_PORT 9901
typedef struct _enrp_tap_rec_t {
guint8 type;
guint16 size;
const char* type_string;
} enrp_tap_rec_t;
/* Dissectors for error causes. This is common for ASAP and ENRP. */
static void
dissect_unknown_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
{
guint16 code, length, cause_info_length;
code = tvb_get_ntohs(cause_tvb, CAUSE_CODE_OFFSET);
length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET);
cause_info_length = length - CAUSE_HEADER_LENGTH;
if (cause_info_length > 0)
proto_tree_add_item(cause_tree, hf_cause_info, cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, ENC_NA);
proto_item_append_text(cause_item, " (code %u and %u byte%s information)", code, cause_info_length, plurality(cause_info_length, "", "s"));
}
static void
dissect_error_cause(tvbuff_t *cause_tvb, proto_tree *parameter_tree)
{
guint16 code, length, padding_length;
proto_item *cause_item;
proto_tree *cause_tree;
tvbuff_t *parameter_tvb, *message_tvb;
code = tvb_get_ntohs(cause_tvb, CAUSE_CODE_OFFSET);
length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET);
padding_length = tvb_captured_length(cause_tvb) - length;
cause_tree = proto_tree_add_subtree(parameter_tree, cause_tvb, CAUSE_HEADER_OFFSET, -1,
ett_enrp_cause, &cause_item, val_to_str_const(code, cause_code_values, "Unknown error cause"));
proto_tree_add_item(cause_tree, hf_cause_code, cause_tvb, CAUSE_CODE_OFFSET, CAUSE_CODE_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(cause_tree, hf_cause_length, cause_tvb, CAUSE_LENGTH_OFFSET, CAUSE_LENGTH_LENGTH, ENC_BIG_ENDIAN);
switch(code) {
case UNRECOGNIZED_PARAMETER_CAUSE_CODE:
parameter_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET);
dissect_parameter(parameter_tvb, cause_tree);
break;
case UNRECONGNIZED_MESSAGE_CAUSE_CODE:
message_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET);
dissect_enrp(message_tvb, NULL, cause_tree, NULL);
break;
case INVALID_VALUES:
parameter_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET);
dissect_parameter(parameter_tvb, cause_tree);
break;
case NON_UNIQUE_PE_IDENTIFIER:
break;
case POOLING_POLICY_INCONSISTENT_CAUSE_CODE:
parameter_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET);
dissect_parameter(parameter_tvb, cause_tree);
break;
case LACK_OF_RESOURCES_CAUSE_CODE:
break;
case INCONSISTENT_TRANSPORT_TYPE_CAUSE_CODE:
parameter_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET);
dissect_parameter(parameter_tvb, cause_tree);
break;
case INCONSISTENT_DATA_CONTROL_CONFIGURATION_CAUSE_CODE:
break;
case UNKNOWN_POOL_HANDLE:
break;
case REJECTION_DUE_TO_SECURITY_CAUSE_CODE:
break;
default:
dissect_unknown_cause(cause_tvb, cause_tree, cause_item);
break;
}
if (padding_length > 0)
proto_tree_add_item(cause_tree, hf_cause_padding, cause_tvb, CAUSE_HEADER_OFFSET + length, padding_length, ENC_NA);
}
static void
dissect_error_causes(tvbuff_t *error_causes_tvb, proto_tree *parameter_tree)
{
guint16 length, total_length;
gint offset;
tvbuff_t *error_cause_tvb;
offset = 0;
while(tvb_reported_length_remaining(error_causes_tvb, offset) > 0) {
length = tvb_get_ntohs(error_causes_tvb, offset + CAUSE_LENGTH_OFFSET);
total_length = ADD_PADDING(length);
error_cause_tvb = tvb_new_subset_length(error_causes_tvb, offset, total_length);
dissect_error_cause(error_cause_tvb, parameter_tree);
offset += total_length;
}
}
/* Dissectors for parameters. This is common for ASAP and ENRP. */
static void
dissect_ipv4_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_item(parameter_tree, hf_parameter_ipv4_address, parameter_tvb, IPV4_ADDRESS_OFFSET, IPV4_ADDRESS_LENGTH, ENC_BIG_ENDIAN);
proto_item_append_text(parameter_item, " (%s)", tvb_ip_to_str(wmem_packet_scope(), parameter_tvb, IPV4_ADDRESS_OFFSET));
}
static void
dissect_ipv6_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_item(parameter_tree, hf_parameter_ipv6_address, parameter_tvb, IPV6_ADDRESS_OFFSET, IPV6_ADDRESS_LENGTH, ENC_NA);
proto_item_append_text(parameter_item, " (%s)", tvb_ip6_to_str(wmem_packet_scope(), parameter_tvb, IPV6_ADDRESS_OFFSET));
}
static void
dissect_dccp_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
{
tvbuff_t *parameters_tvb;
proto_tree_add_item(parameter_tree, hf_dccp_port, parameter_tvb, DCCP_PORT_OFFSET, DCCP_PORT_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(parameter_tree, hf_dccp_reserved, parameter_tvb, DCCP_RESERVED_OFFSET, DCCP_RESERVED_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(parameter_tree, hf_dccp_service_code, parameter_tvb, DCCP_SERVICE_CODE_OFFSET, DCCP_SERVICE_CODE_LENGTH, ENC_BIG_ENDIAN);
parameters_tvb = tvb_new_subset_remaining(parameter_tvb, DCCP_ADDRESS_OFFSET);
dissect_parameters(parameters_tvb, parameter_tree);
}
static void
dissect_sctp_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
{
tvbuff_t *parameters_tvb;
proto_tree_add_item(parameter_tree, hf_sctp_port, parameter_tvb, SCTP_PORT_OFFSET, SCTP_PORT_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(parameter_tree, hf_transport_use, parameter_tvb, SCTP_TRANSPORT_USE_OFFSET, SCTP_TRANSPORT_USE_LENGTH, ENC_BIG_ENDIAN);
parameters_tvb = tvb_new_subset_remaining(parameter_tvb, SCTP_ADDRESS_OFFSET);
dissect_parameters(parameters_tvb, parameter_tree);
}
static void
dissect_tcp_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
{
tvbuff_t *parameters_tvb;
proto_tree_add_item(parameter_tree, hf_tcp_port, parameter_tvb, TCP_PORT_OFFSET, TCP_PORT_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(parameter_tree, hf_transport_use, parameter_tvb, TCP_TRANSPORT_USE_OFFSET, TCP_TRANSPORT_USE_LENGTH, ENC_BIG_ENDIAN);
parameters_tvb = tvb_new_subset_remaining(parameter_tvb, TCP_ADDRESS_OFFSET);
dissect_parameters(parameters_tvb, parameter_tree);
}
static void
dissect_udp_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
{
tvbuff_t *parameters_tvb;
proto_tree_add_item(parameter_tree, hf_udp_port, parameter_tvb, UDP_PORT_OFFSET, UDP_PORT_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(parameter_tree, hf_udp_reserved, parameter_tvb, UDP_RESERVED_OFFSET, UDP_RESERVED_LENGTH, ENC_BIG_ENDIAN);
parameters_tvb = tvb_new_subset_remaining(parameter_tvb, UDP_ADDRESS_OFFSET);
dissect_parameters(parameters_tvb, parameter_tree);
}
static void
dissect_udp_lite_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
{
tvbuff_t *parameters_tvb;
proto_tree_add_item(parameter_tree, hf_udp_lite_port, parameter_tvb, UDP_LITE_PORT_OFFSET, UDP_LITE_PORT_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(parameter_tree, hf_udp_lite_reserved, parameter_tvb, UDP_LITE_RESERVED_OFFSET, UDP_LITE_RESERVED_LENGTH, ENC_BIG_ENDIAN);
parameters_tvb = tvb_new_subset_remaining(parameter_tvb, UDP_LITE_ADDRESS_OFFSET);
dissect_parameters(parameters_tvb, parameter_tree);
}
static void
dissect_pool_member_selection_policy_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
{
guint32 type;
guint length;
proto_tree_add_item(parameter_tree, hf_policy_type, parameter_tvb, POLICY_TYPE_OFFSET, POLICY_TYPE_LENGTH, ENC_BIG_ENDIAN);
type = tvb_get_ntohl(parameter_tvb, POLICY_TYPE_OFFSET);
switch (type) {
case RANDOM_POLICY:
case ROUND_ROBIN_POLICY:
break;
case WEIGHTED_RANDOM_POLICY:
case WEIGHTED_ROUND_ROBIN_POLICY:
proto_tree_add_item(parameter_tree, hf_policy_weight, parameter_tvb, POLICY_WEIGHT_OFFSET, POLICY_WEIGHT_LENGTH, ENC_BIG_ENDIAN);
break;
case PRIORITY_POLICY:
proto_tree_add_item(parameter_tree, hf_policy_priority, parameter_tvb, POLICY_PRIORITY_OFFSET, POLICY_PRIORITY_LENGTH, ENC_BIG_ENDIAN);
break;
case LEAST_USED_POLICY:
case RANDOMIZED_LEAST_USED_POLICY:
proto_tree_add_double_format_value(parameter_tree, hf_policy_load, parameter_tvb, POLICY_LOAD_OFFSET, POLICY_LOAD_LENGTH,
100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff, "%1.2f%%",
100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff);
break;
case LEAST_USED_WITH_DEG_POLICY:
case PRIORITY_LEAST_USED_POLICY:
proto_tree_add_double_format_value(parameter_tree, hf_policy_load, parameter_tvb, POLICY_LOAD_OFFSET, POLICY_LOAD_LENGTH,
100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff, "%1.2f%%",
100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff);
proto_tree_add_double_format_value(parameter_tree, hf_policy_degradation, parameter_tvb, POLICY_DEGRADATION_OFFSET, POLICY_DEGRADATION_LENGTH,
100.0 * tvb_get_ntohl(parameter_tvb, POLICY_DEGRADATION_OFFSET) / (double)0xffffffff, "%1.2f%%",
100.0 * tvb_get_ntohl(parameter_tvb, POLICY_DEGRADATION_OFFSET) / (double)0xffffffff);
break;
case LEAST_USED_DPF_POLICY:
proto_tree_add_double_format_value(parameter_tree, hf_policy_load, parameter_tvb, POLICY_LOAD_OFFSET, POLICY_LOAD_LENGTH,
100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff, "%1.2f%%",
100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff);
proto_tree_add_double_format_value(parameter_tree, hf_policy_loaddpf, parameter_tvb, POLICY_LUDPF_LOADDPF_OFFSET, POLICY_LUDPF_LOADDPF_LENGTH,
tvb_get_ntohl(parameter_tvb, POLICY_LUDPF_LOADDPF_OFFSET) / (double)0xffffffff, "%1.5f",
tvb_get_ntohl(parameter_tvb, POLICY_LUDPF_LOADDPF_OFFSET) / (double)0xffffffff);
proto_tree_add_item(parameter_tree, hf_policy_distance, parameter_tvb, POLICY_LUDPF_DISTANCE_OFFSET, POLICY_LUDPF_DISTANCE_LENGTH, ENC_BIG_ENDIAN);
break;
case WEIGHTED_RANDOM_DPF_POLICY:
proto_tree_add_item(parameter_tree, hf_policy_weight, parameter_tvb, POLICY_WEIGHT_OFFSET, POLICY_WEIGHT_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_double_format_value(parameter_tree, hf_policy_weightdpf, parameter_tvb, POLICY_WRANDDPF_WEIGHTDPF_OFFSET, POLICY_WRANDDPF_WEIGHTDPF_LENGTH,
tvb_get_ntohl(parameter_tvb, POLICY_WRANDDPF_WEIGHTDPF_OFFSET) / (double)0xffffffff, "%1.5f",
tvb_get_ntohl(parameter_tvb, POLICY_WRANDDPF_WEIGHTDPF_OFFSET) / (double)0xffffffff);
proto_tree_add_item(parameter_tree, hf_policy_distance, parameter_tvb, POLICY_WRANDDPF_DISTANCE_OFFSET, POLICY_WRANDDPF_DISTANCE_LENGTH, ENC_BIG_ENDIAN);
break;
default:
length = tvb_reported_length(parameter_tvb) - POLICY_VALUE_OFFSET;
if (length > 0) {
proto_tree_add_item(parameter_tree, hf_policy_value, parameter_tvb, POLICY_VALUE_OFFSET, length, ENC_NA);
}
break;
}
}
static void
dissect_pool_handle_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
{
guint16 handle_length;
proto_item* pi;
handle_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
pi = proto_tree_add_item(parameter_tree, hf_pool_handle, parameter_tvb, POOL_HANDLE_OFFSET, handle_length, ENC_NA);
proto_item_append_text(pi, " (%s)",
tvb_format_text(wmem_packet_scope(), parameter_tvb, POOL_HANDLE_OFFSET, handle_length) );
}
static void
dissect_pool_element_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
{
tvbuff_t* parameters_tvb;
proto_tree_add_item(parameter_tree, hf_pe_pe_identifier, parameter_tvb, PE_PE_IDENTIFIER_OFFSET, PE_PE_IDENTIFIER_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(parameter_tree, hf_home_enrp_id, parameter_tvb, HOME_ENRP_INDENTIFIER_OFFSET, HOME_ENRP_INDENTIFIER_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(parameter_tree, hf_reg_life, parameter_tvb, REGISTRATION_LIFE_OFFSET, REGISTRATION_LIFE_LENGTH, ENC_BIG_ENDIAN);
parameters_tvb = tvb_new_subset_remaining(parameter_tvb, USER_TRANSPORT_PARAMETER_OFFSET);
dissect_parameters(parameters_tvb, parameter_tree);
}
static void
dissect_server_information_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
{
tvbuff_t *parameters_tvb;
proto_tree_add_item(parameter_tree, hf_server_identifier, parameter_tvb, SERVER_ID_OFFSET, SERVER_ID_LENGTH, ENC_BIG_ENDIAN);
parameters_tvb = tvb_new_subset_remaining(parameter_tvb, SERVER_TRANSPORT_OFFSET);
dissect_parameters(parameters_tvb, parameter_tree);
}
static void
dissect_operation_error_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
{
tvbuff_t *error_causes_tvb;
error_causes_tvb = tvb_new_subset_remaining(parameter_tvb, ERROR_CAUSES_OFFSET);
dissect_error_causes(error_causes_tvb, parameter_tree);
}
static void
dissect_cookie_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 cookie_length;
cookie_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
if (cookie_length > 0)
proto_tree_add_item(parameter_tree, hf_cookie, parameter_tvb, COOKIE_OFFSET, cookie_length, ENC_NA);
proto_item_append_text(parameter_item, " (%u byte%s)", cookie_length, plurality(cookie_length, "", "s"));
}
static void
dissect_pe_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_item(parameter_tree, hf_pe_identifier, parameter_tvb, PE_IDENTIFIER_OFFSET, PE_IDENTIFIER_LENGTH, ENC_BIG_ENDIAN);
proto_item_append_text(parameter_item, " (0x%x)", tvb_get_ntohl(parameter_tvb, PE_IDENTIFIER_OFFSET));
}
static void
dissect_pe_checksum_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_item(parameter_tree, hf_pe_checksum, parameter_tvb, PE_CHECKSUM_OFFSET, PE_CHECKSUM_LENGTH, ENC_BIG_ENDIAN);
proto_item_append_text(parameter_item, " (0x%x)", tvb_get_ntohs(parameter_tvb, PE_CHECKSUM_OFFSET));
}
static void
dissect_unknown_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 type, parameter_value_length;
type = tvb_get_ntohs(parameter_tvb, PARAMETER_TYPE_OFFSET);
parameter_value_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
if (parameter_value_length > 0)
proto_tree_add_item(parameter_tree, hf_parameter_value, parameter_tvb, PARAMETER_VALUE_OFFSET, parameter_value_length, ENC_NA);
proto_item_append_text(parameter_item, " (type %u and %u byte%s value)", type, parameter_value_length, plurality(parameter_value_length, "", "s"));
}
static void
dissect_parameter(tvbuff_t *parameter_tvb, proto_tree *enrp_tree)
{
guint16 type, length, padding_length;
proto_tree *parameter_item;
proto_tree *parameter_tree;
/* extract tag and length from the parameter */
type = tvb_get_ntohs(parameter_tvb, PARAMETER_TYPE_OFFSET);
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
padding_length = tvb_captured_length(parameter_tvb) - length;
/* create proto_tree stuff */
parameter_tree = proto_tree_add_subtree(enrp_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, -1,
ett_enrp_parameter, &parameter_item, val_to_str_const(type, parameter_type_values, "Unknown Parameter"));
/* add tag and length to the enrp tree */
proto_tree_add_item(parameter_tree, hf_parameter_type, parameter_tvb, PARAMETER_TYPE_OFFSET, PARAMETER_TYPE_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, ENC_BIG_ENDIAN);
switch(type) {
case IPV4_ADDRESS_PARAMETER_TYPE:
dissect_ipv4_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case IPV6_ADDRESS_PARAMETER_TYPE:
dissect_ipv6_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case DCCP_TRANSPORT_PARAMETER_TYPE:
dissect_dccp_transport_parameter(parameter_tvb, parameter_tree);
break;
case SCTP_TRANSPORT_PARAMETER_TYPE:
dissect_sctp_transport_parameter(parameter_tvb, parameter_tree);
break;
case TCP_TRANSPORT_PARAMETER_TYPE:
dissect_tcp_transport_parameter(parameter_tvb, parameter_tree);
break;
case UDP_TRANSPORT_PARAMETER_TYPE:
dissect_udp_transport_parameter(parameter_tvb, parameter_tree);
break;
case UDP_LITE_TRANSPORT_PARAMETER_TYPE:
dissect_udp_lite_transport_parameter(parameter_tvb, parameter_tree);
break;
case POOL_MEMBER_SELECTION_POLICY_PARAMETER_TYPE:
dissect_pool_member_selection_policy_parameter(parameter_tvb, parameter_tree);
break;
case POOL_HANDLE_PARAMETER_TYPE:
dissect_pool_handle_parameter(parameter_tvb, parameter_tree);
break;
case POOL_ELEMENT_PARAMETER_TYPE:
dissect_pool_element_parameter(parameter_tvb, parameter_tree);
break;
case SERVER_INFORMATION_PARAMETER_TYPE:
dissect_server_information_parameter(parameter_tvb, parameter_tree);
break;
case OPERATION_ERROR_PARAMETER_TYPE:
dissect_operation_error_parameter(parameter_tvb, parameter_tree);
break;
case COOKIE_PARAMETER_TYPE:
dissect_cookie_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case PE_IDENTIFIER_PARAMETER_TYPE:
dissect_pe_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case PE_CHECKSUM_PARAMETER_TYPE:
dissect_pe_checksum_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
default:
dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
};
if (padding_length > 0)
proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, ENC_NA);
}
static void
dissect_parameters(tvbuff_t *parameters_tvb, proto_tree *tree)
{
gint offset, length, total_length, remaining_length;
tvbuff_t *parameter_tvb;
offset = 0;
while((remaining_length = tvb_reported_length_remaining(parameters_tvb, offset)) > 0) {
length = tvb_get_ntohs(parameters_tvb, offset + PARAMETER_LENGTH_OFFSET);
total_length = ADD_PADDING(length);
if (remaining_length >= length)
total_length = MIN(total_length, remaining_length);
/* create a tvb for the parameter including the padding bytes */
parameter_tvb = tvb_new_subset_length(parameters_tvb, offset, total_length);
dissect_parameter(parameter_tvb, tree);
/* get rid of the handled parameter */
offset += total_length;
}
}
/* Dissectors for messages. This is specific to ENRP */
#define SENDER_SERVERS_ID_LENGTH 4
#define RECEIVER_SERVERS_ID_LENGTH 4
#define SENDER_SERVERS_ID_OFFSET MESSAGE_VALUE_OFFSET
#define RECEIVER_SERVERS_ID_OFFSET (SENDER_SERVERS_ID_OFFSET + SENDER_SERVERS_ID_LENGTH)
#define MESSAGE_PARAMETERS_OFFSET (RECEIVER_SERVERS_ID_OFFSET + RECEIVER_SERVERS_ID_LENGTH)
#define REPLY_REQUIRED_BIT_MASK 0x01
static const true_false_string reply_required_bit_value = {
"Reply required",
"Reply not required"
};
static void
dissect_enrp_presence_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree)
{
tvbuff_t *parameters_tvb;
proto_tree_add_item(flags_tree, hf_reply_required_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
parameters_tvb = tvb_new_subset_remaining(message_tvb, MESSAGE_PARAMETERS_OFFSET);
dissect_parameters(parameters_tvb, message_tree);
}
#define OWN_CHILDREN_ONLY_BIT_MASK 0x01
static const true_false_string own_children_only_bit_value = {
"Only information for own PEs",
"Information for all PEs"
};
static void
dissect_enrp_handle_table_request_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree)
{
/* FIXME: ensure that the length is 12 bytes. */
proto_tree_add_item(flags_tree, hf_own_children_only_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
}
#define REJECT_BIT_MASK 0x01
#define MORE_TO_SEND_BIT_MASK 0x02
static const true_false_string reject_bit_value = {
"Rejected",
"Accepted"
};
static const true_false_string more_to_send_bit_value = {
"More information available",
"All information included"
};
static void
dissect_enrp_handle_table_response_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree)
{
tvbuff_t *parameters_tvb;
proto_tree_add_item(flags_tree, hf_more_to_send_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(flags_tree, hf_reject_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
parameters_tvb = tvb_new_subset_remaining(message_tvb, MESSAGE_PARAMETERS_OFFSET);
dissect_parameters(parameters_tvb, message_tree);
}
#define UPDATE_ACTION_LENGTH 2
#define PNU_RESERVED_LENGTH 2
#define UPDATE_ACTION_OFFSET (MESSAGE_VALUE_OFFSET + SENDER_SERVERS_ID_LENGTH + RECEIVER_SERVERS_ID_LENGTH)
#define PNU_RESERVED_OFFSET (UPDATE_ACTION_OFFSET + UPDATE_ACTION_LENGTH)
#define PNU_MESSAGE_PARAMETERS_OFFSET (PNU_RESERVED_OFFSET + PNU_RESERVED_LENGTH)
static const value_string update_action_values[] = {
{ 0, "Add pool element" },
{ 1, "Delete pool element" },
{ 0, NULL } };
#define TOS_BIT_MASK 0x01
static const true_false_string tos_bit_value = {
"Takeover suggested",
"Takeover not suggested"
};
static void
dissect_enrp_handle_update_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree)
{
tvbuff_t *parameters_tvb;
proto_tree_add_item(flags_tree, hf_tos_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_update_action, message_tvb, UPDATE_ACTION_OFFSET, UPDATE_ACTION_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_pmu_reserved, message_tvb, PNU_RESERVED_OFFSET, PNU_RESERVED_LENGTH, ENC_BIG_ENDIAN);
parameters_tvb = tvb_new_subset_remaining(message_tvb, PNU_MESSAGE_PARAMETERS_OFFSET);
dissect_parameters(parameters_tvb, message_tree);
}
static void
dissect_enrp_list_request_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree _U_)
{
/* FIXME: ensure that the length is 12 bytes. */
proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
}
static void
dissect_enrp_list_response_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree)
{
tvbuff_t *parameters_tvb;
proto_tree_add_item(flags_tree, hf_reject_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
parameters_tvb = tvb_new_subset_remaining(message_tvb, MESSAGE_PARAMETERS_OFFSET);
dissect_parameters(parameters_tvb, message_tree);
}
#define TARGET_SERVERS_ID_LENGTH 4
#define TARGET_SERVERS_ID_OFFSET (RECEIVER_SERVERS_ID_OFFSET + RECEIVER_SERVERS_ID_LENGTH)
static void
dissect_enrp_init_takeover_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree _U_)
{
/* FIXME: ensure that the length is 16 bytes. */
proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_target_servers_id, message_tvb, TARGET_SERVERS_ID_OFFSET, TARGET_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
}
static void
dissect_enrp_init_takeover_ack_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree _U_)
{
/* FIXME: ensure that the length is 16 bytes. */
proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_target_servers_id, message_tvb, TARGET_SERVERS_ID_OFFSET, TARGET_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
}
static void
dissect_enrp_init_takeover_server_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree _U_)
{
/* FIXME: ensure that the length is 16 bytes. */
proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_target_servers_id, message_tvb, TARGET_SERVERS_ID_OFFSET, TARGET_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
}
static void
dissect_enrp_error_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree _U_)
{
tvbuff_t *parameters_tvb;
proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, ENC_BIG_ENDIAN);
parameters_tvb = tvb_new_subset_remaining(message_tvb, MESSAGE_PARAMETERS_OFFSET);
dissect_parameters(parameters_tvb, message_tree);
}
static void
dissect_unknown_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree _U_)
{
proto_tree_add_item(message_tree, hf_message_value, message_tvb, MESSAGE_VALUE_OFFSET, tvb_captured_length(message_tvb) - MESSAGE_HEADER_LENGTH, ENC_NA);
}
#define ENRP_PRESENCE_MESSAGE_TYPE 0x01
#define ENRP_HANDLE_TABLE_REQUEST_MESSAGE_TYPE 0x02
#define ENRP_HANDLE_TABLE_RESPONSE_MESSAGE_TYPE 0x03
#define ENRP_HANDLE_UPDATE_MESSAGE_TYPE 0x04
#define ENRP_LIST_REQUEST_MESSAGE_TYPE 0x05
#define ENRP_LIST_RESPONSE_MESSAGE_TYPE 0x06
#define ENRP_INIT_TAKEOVER_MESSAGE_TYPE 0x07
#define ENRP_INIT_TAKEOVER_ACK_MESSAGE_TYPE 0x08
#define ENRP_TAKEOVER_SERVER_MESSAGE_TYPE 0x09
#define ENRP_ERROR_MESSAGE_TYPE 0x0a
static const value_string message_type_values[] = {
{ ENRP_PRESENCE_MESSAGE_TYPE, "ENRP Presence" },
{ ENRP_HANDLE_TABLE_REQUEST_MESSAGE_TYPE, "ENRP Handle Table Request" },
{ ENRP_HANDLE_TABLE_RESPONSE_MESSAGE_TYPE, "ENRP Handle Table Response" },
{ ENRP_HANDLE_UPDATE_MESSAGE_TYPE, "ENRP Handle Update" },
{ ENRP_LIST_REQUEST_MESSAGE_TYPE, "ENRP List Request" },
{ ENRP_LIST_RESPONSE_MESSAGE_TYPE, "ENRP List Response" },
{ ENRP_INIT_TAKEOVER_MESSAGE_TYPE, "ENRP Init Takeover" },
{ ENRP_INIT_TAKEOVER_ACK_MESSAGE_TYPE, "ENRP Init Takeover Ack" },
{ ENRP_TAKEOVER_SERVER_MESSAGE_TYPE, "ENRP Takeover Server" },
{ ENRP_ERROR_MESSAGE_TYPE, "ENRP Error" },
{ 0, NULL } };
static void
dissect_enrp_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *enrp_tree)
{
enrp_tap_rec_t *tap_rec;
proto_item *flags_item;
proto_tree *flags_tree;
guint8 type;
type = tvb_get_guint8(message_tvb, MESSAGE_TYPE_OFFSET);
/* pinfo is NULL only if dissect_enrp_message is called via dissect_error_cause */
if (pinfo) {
tap_rec = wmem_new0(pinfo->pool, enrp_tap_rec_t);
tap_rec->type = type;
tap_rec->size = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET);
tap_rec->type_string = val_to_str_const(tap_rec->type, message_type_values, "Unknown ENRP type");
tap_queue_packet(enrp_tap, pinfo, tap_rec);
col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str_const(type, message_type_values, "Unknown ENRP Type"));
}
if (enrp_tree) {
proto_tree_add_item(enrp_tree, hf_message_type, message_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH, ENC_BIG_ENDIAN);
flags_item = proto_tree_add_item(enrp_tree, hf_message_flags, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN);
flags_tree = proto_item_add_subtree(flags_item, ett_enrp_flags);
proto_tree_add_item(enrp_tree, hf_message_length, message_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, ENC_BIG_ENDIAN);
switch (type) {
case ENRP_PRESENCE_MESSAGE_TYPE:
dissect_enrp_presence_message(message_tvb, enrp_tree, flags_tree);
break;
case ENRP_HANDLE_TABLE_REQUEST_MESSAGE_TYPE:
dissect_enrp_handle_table_request_message(message_tvb, enrp_tree, flags_tree);
break;
case ENRP_HANDLE_TABLE_RESPONSE_MESSAGE_TYPE:
dissect_enrp_handle_table_response_message(message_tvb, enrp_tree, flags_tree);
break;
case ENRP_HANDLE_UPDATE_MESSAGE_TYPE:
dissect_enrp_handle_update_message(message_tvb, enrp_tree, flags_tree);
break;
case ENRP_LIST_REQUEST_MESSAGE_TYPE:
dissect_enrp_list_request_message(message_tvb, enrp_tree, flags_tree);
break;
case ENRP_LIST_RESPONSE_MESSAGE_TYPE:
dissect_enrp_list_response_message(message_tvb, enrp_tree, flags_tree);
break;
case ENRP_INIT_TAKEOVER_MESSAGE_TYPE:
dissect_enrp_init_takeover_message(message_tvb, enrp_tree, flags_tree);
break;
case ENRP_INIT_TAKEOVER_ACK_MESSAGE_TYPE:
dissect_enrp_init_takeover_ack_message(message_tvb, enrp_tree, flags_tree);
break;
case ENRP_TAKEOVER_SERVER_MESSAGE_TYPE:
dissect_enrp_init_takeover_server_message(message_tvb, enrp_tree, flags_tree);
break;
case ENRP_ERROR_MESSAGE_TYPE:
dissect_enrp_error_message(message_tvb, enrp_tree, flags_tree);
break;
default:
dissect_unknown_message(message_tvb, enrp_tree, flags_tree);
break;
}
}
}
static int
dissect_enrp(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_item *enrp_item;
proto_tree *enrp_tree;
/* pinfo is NULL only if dissect_enrp is called from dissect_error_cause */
if (pinfo)
col_set_str(pinfo->cinfo, COL_PROTOCOL, "ENRP");
/* create the enrp protocol tree */
enrp_item = proto_tree_add_item(tree, proto_enrp, message_tvb, 0, -1, ENC_NA);
enrp_tree = proto_item_add_subtree(enrp_item, ett_enrp);
/* dissect the message */
dissect_enrp_message(message_tvb, pinfo, enrp_tree);
return tvb_captured_length(message_tvb);
}
/* TAP STAT INFO */
typedef enum
{
MESSAGE_TYPE_COLUMN = 0,
MESSAGES_COLUMN,
MESSAGES_SHARE_COLUMN,
BYTES_COLUMN,
BYTES_SHARE_COLUMN,
FIRST_SEEN_COLUMN,
LAST_SEEN_COLUMN,
INTERVAL_COLUMN,
MESSAGE_RATE_COLUMN,
BYTE_RATE_COLUMN
} enrp_stat_columns;
static stat_tap_table_item enrp_stat_fields[] = {
{ TABLE_ITEM_STRING, TAP_ALIGN_LEFT, "NetPerfMeter Message Type", "%-25s" },
{ TABLE_ITEM_UINT, TAP_ALIGN_RIGHT, "Messages ", "%u" },
{ TABLE_ITEM_UINT, TAP_ALIGN_RIGHT, "Messages Share (%)" , "%1.3f %%" },
{ TABLE_ITEM_UINT, TAP_ALIGN_RIGHT, "Bytes (B)", "%u" },
{ TABLE_ITEM_UINT, TAP_ALIGN_RIGHT, "Bytes Share (%) ", "%1.3f %%" },
{ TABLE_ITEM_FLOAT, TAP_ALIGN_LEFT, "First Seen (s)", "%1.6f" },
{ TABLE_ITEM_FLOAT, TAP_ALIGN_LEFT, "Last Seen (s)", "%1.6f" },
{ TABLE_ITEM_FLOAT, TAP_ALIGN_LEFT, "Interval (s)", "%1.6f" },
{ TABLE_ITEM_FLOAT, TAP_ALIGN_LEFT, "Message Rate (Msg/s)", "%1.2f" },
{ TABLE_ITEM_FLOAT, TAP_ALIGN_LEFT, "Byte Rate (B/s)", "%1.2f" }
};
static void enrp_stat_init(stat_tap_table_ui* new_stat)
{
const char *table_name = "NetPerfMeter Statistics";
int num_fields = sizeof(enrp_stat_fields)/sizeof(stat_tap_table_item);
stat_tap_table *table;
int i = 0;
stat_tap_table_item_type items[sizeof(enrp_stat_fields)/sizeof(stat_tap_table_item)];
table = stat_tap_find_table(new_stat, table_name);
if (table) {
if (new_stat->stat_tap_reset_table_cb) {
new_stat->stat_tap_reset_table_cb(table);
}
return;
}
table = stat_tap_init_table(table_name, num_fields, 0, NULL);
stat_tap_add_table(new_stat, table);
/* Add a row for each value type */
while (message_type_values[i].strptr) {
items[MESSAGE_TYPE_COLUMN].type = TABLE_ITEM_STRING;
items[MESSAGE_TYPE_COLUMN].value.string_value = message_type_values[i].strptr;
items[MESSAGES_COLUMN].type = TABLE_ITEM_UINT;
items[MESSAGES_COLUMN].value.uint_value = 0;
items[MESSAGES_SHARE_COLUMN].type = TABLE_ITEM_NONE;
items[MESSAGES_SHARE_COLUMN].value.float_value = -1.0;
items[BYTES_COLUMN].type = TABLE_ITEM_UINT;
items[BYTES_COLUMN].value.uint_value = 0;
items[BYTES_SHARE_COLUMN].type = TABLE_ITEM_NONE;
items[BYTES_SHARE_COLUMN].value.float_value = -1.0;
items[FIRST_SEEN_COLUMN].type = TABLE_ITEM_NONE;
items[FIRST_SEEN_COLUMN].value.float_value = DBL_MAX;
items[LAST_SEEN_COLUMN].type = TABLE_ITEM_NONE;
items[LAST_SEEN_COLUMN].value.float_value = DBL_MIN;
items[INTERVAL_COLUMN].type = TABLE_ITEM_NONE;
items[INTERVAL_COLUMN].value.float_value = -1.0;
items[MESSAGE_RATE_COLUMN].type = TABLE_ITEM_NONE;
items[MESSAGE_RATE_COLUMN].value.float_value = -1.0;
items[BYTE_RATE_COLUMN].type = TABLE_ITEM_NONE;
items[BYTE_RATE_COLUMN].value.float_value = -1.0;
stat_tap_init_table_row(table, i, num_fields, items);
i++;
}
}
static tap_packet_status
enrp_stat_packet(void* tapdata, packet_info* pinfo _U_, epan_dissect_t* edt _U_, const void* data)
{
stat_data_t* stat_data = (stat_data_t*)tapdata;
const enrp_tap_rec_t* tap_rec = (const enrp_tap_rec_t*)data;
stat_tap_table* table;
stat_tap_table_item_type* msg_data;
gint idx;
guint64 messages;
guint64 bytes;
int i = 0;
double firstSeen = -1.0;
double lastSeen = -1.0;
idx = str_to_val_idx(tap_rec->type_string, message_type_values);
if (idx < 0)
return TAP_PACKET_DONT_REDRAW;
table = g_array_index(stat_data->stat_tap_data->tables, stat_tap_table*, 0);
/* Update packets counter */
enrp_total_msgs++;
msg_data = stat_tap_get_field_data(table, idx, MESSAGES_COLUMN);
msg_data->value.uint_value++;
messages = msg_data->value.uint_value;
stat_tap_set_field_data(table, idx, MESSAGES_COLUMN, msg_data);
/* Update bytes counter */
enrp_total_bytes += tap_rec->size;
msg_data = stat_tap_get_field_data(table, idx, BYTES_COLUMN);
msg_data->value.uint_value += tap_rec->size;
bytes = msg_data->value.uint_value;
stat_tap_set_field_data(table, idx, BYTES_COLUMN, msg_data);
/* Update messages and bytes share */
while (message_type_values[i].strptr) {
msg_data = stat_tap_get_field_data(table, i, MESSAGES_COLUMN);
const guint m = msg_data->value.uint_value;
msg_data = stat_tap_get_field_data(table, i, BYTES_COLUMN);
const guint b = msg_data->value.uint_value;
msg_data = stat_tap_get_field_data(table, i, MESSAGES_SHARE_COLUMN);
msg_data->type = TABLE_ITEM_FLOAT;
msg_data->value.float_value = 100.0 * m / (double)enrp_total_msgs;
stat_tap_set_field_data(table, i, MESSAGES_SHARE_COLUMN, msg_data);
msg_data = stat_tap_get_field_data(table, i, BYTES_SHARE_COLUMN);
msg_data->type = TABLE_ITEM_FLOAT;
msg_data->value.float_value = 100.0 * b / (double)enrp_total_bytes;
stat_tap_set_field_data(table, i, BYTES_SHARE_COLUMN, msg_data);
i++;
}
/* Update first seen time */
if (pinfo->presence_flags & PINFO_HAS_TS) {
msg_data = stat_tap_get_field_data(table, idx, FIRST_SEEN_COLUMN);
msg_data->type = TABLE_ITEM_FLOAT;
msg_data->value.float_value = MIN(msg_data->value.float_value, nstime_to_sec(&pinfo->rel_ts));
firstSeen = msg_data->value.float_value;
stat_tap_set_field_data(table, idx, FIRST_SEEN_COLUMN, msg_data);
}
/* Update last seen time */
if (pinfo->presence_flags & PINFO_HAS_TS) {
msg_data = stat_tap_get_field_data(table, idx, LAST_SEEN_COLUMN);
msg_data->type = TABLE_ITEM_FLOAT;
msg_data->value.float_value = MAX(msg_data->value.float_value, nstime_to_sec(&pinfo->rel_ts));
lastSeen = msg_data->value.float_value;
stat_tap_set_field_data(table, idx, LAST_SEEN_COLUMN, msg_data);
}
if ((lastSeen - firstSeen) > 0.0) {
/* Update interval */
msg_data = stat_tap_get_field_data(table, idx, INTERVAL_COLUMN);
msg_data->type = TABLE_ITEM_FLOAT;
msg_data->value.float_value = lastSeen - firstSeen;
stat_tap_set_field_data(table, idx, INTERVAL_COLUMN, msg_data);
/* Update message rate */
msg_data = stat_tap_get_field_data(table, idx, MESSAGE_RATE_COLUMN);
msg_data->type = TABLE_ITEM_FLOAT;
msg_data->value.float_value = messages / (lastSeen - firstSeen);
stat_tap_set_field_data(table, idx, MESSAGE_RATE_COLUMN, msg_data);
/* Update byte rate */
msg_data = stat_tap_get_field_data(table, idx, BYTE_RATE_COLUMN);
msg_data->type = TABLE_ITEM_FLOAT;
msg_data->value.float_value = bytes / (lastSeen - firstSeen);
stat_tap_set_field_data(table, idx, BYTE_RATE_COLUMN, msg_data);
}
return TAP_PACKET_REDRAW;
}
static void
enrp_stat_reset(stat_tap_table* table)
{
guint element;
stat_tap_table_item_type* item_data;
for (element = 0; element < table->num_elements; element++) {
item_data = stat_tap_get_field_data(table, element, MESSAGES_COLUMN);
item_data->value.uint_value = 0;
stat_tap_set_field_data(table, element, MESSAGES_COLUMN, item_data);
item_data = stat_tap_get_field_data(table, element, MESSAGES_SHARE_COLUMN);
item_data->type = TABLE_ITEM_NONE;
item_data->value.float_value = -1.0;
stat_tap_set_field_data(table, element, MESSAGES_SHARE_COLUMN, item_data);
item_data = stat_tap_get_field_data(table, element, BYTES_COLUMN);
item_data->value.uint_value = 0;
stat_tap_set_field_data(table, element, BYTES_COLUMN, item_data);
item_data = stat_tap_get_field_data(table, element, BYTES_SHARE_COLUMN);
item_data->type = TABLE_ITEM_NONE;
item_data->value.float_value = -1.0;
stat_tap_set_field_data(table, element, BYTES_SHARE_COLUMN, item_data);
item_data = stat_tap_get_field_data(table, element, FIRST_SEEN_COLUMN);
item_data->type = TABLE_ITEM_NONE;
item_data->value.float_value = DBL_MAX;
stat_tap_set_field_data(table, element, FIRST_SEEN_COLUMN, item_data);
item_data = stat_tap_get_field_data(table, element, LAST_SEEN_COLUMN);
item_data->type = TABLE_ITEM_NONE;
item_data->value.float_value = DBL_MIN;
stat_tap_set_field_data(table, element, LAST_SEEN_COLUMN, item_data);
item_data = stat_tap_get_field_data(table, element, INTERVAL_COLUMN);
item_data->type = TABLE_ITEM_NONE;
item_data->value.float_value = -1.0;
stat_tap_set_field_data(table, element, INTERVAL_COLUMN, item_data);
item_data = stat_tap_get_field_data(table, element, MESSAGE_RATE_COLUMN);
item_data->type = TABLE_ITEM_NONE;
item_data->value.float_value = -1.0;
stat_tap_set_field_data(table, element, MESSAGE_RATE_COLUMN, item_data);
item_data = stat_tap_get_field_data(table, element, BYTE_RATE_COLUMN);
item_data->type = TABLE_ITEM_NONE;
item_data->value.float_value = -1.0;
stat_tap_set_field_data(table, element, BYTE_RATE_COLUMN, item_data);
}
enrp_total_msgs = 0;
enrp_total_bytes = 0;
}
/* Register the protocol with Wireshark */
void
proto_register_enrp(void)
{
/* Setup list of header fields */
static hf_register_info hf[] = {
{ &hf_message_type, { "Type", "enrp.message_type", FT_UINT8, BASE_DEC, VALS(message_type_values), 0x0, NULL, HFILL } },
{ &hf_message_flags, { "Flags", "enrp.message_flags", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL } },
{ &hf_message_length, { "Length", "enrp.message_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_message_value, { "Value", "enrp.message_value", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_cause_code, { "Cause Code", "enrp.cause_code", FT_UINT16, BASE_HEX, VALS(cause_code_values), 0x0, NULL, HFILL } },
{ &hf_cause_length, { "Cause Length", "enrp.cause_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_cause_info, { "Cause Info", "enrp.cause_info", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_cause_padding, { "Padding", "enrp.cause_padding", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_parameter_type, { "Parameter Type", "enrp.parameter_type", FT_UINT16, BASE_HEX, VALS(parameter_type_values), 0x0, NULL, HFILL } },
{ &hf_parameter_length, { "Parameter Length", "enrp.parameter_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_parameter_value, { "Parameter Value", "enrp.parameter_value", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_parameter_padding, { "Padding", "enrp.parameter_padding", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_parameter_ipv4_address, { "IP Version 4 Address", "enrp.ipv4_address", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_parameter_ipv6_address, { "IP Version 6 Address", "enrp.ipv6_address", FT_IPv6, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_dccp_port, { "Port", "enrp.dccp_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_dccp_reserved, { "Reserved", "enrp.dccp_transport_reserved", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_dccp_service_code, { "Service Code", "enrp.dccp_transport_service_code", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_sctp_port, { "Port", "enrp.sctp_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_transport_use, { "Transport Use", "enrp.transport_use", FT_UINT16, BASE_DEC, VALS(transport_use_values), 0x0, NULL, HFILL } },
{ &hf_tcp_port, { "Port", "enrp.tcp_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_udp_port, { "Port", "enrp.udp_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_udp_reserved, { "Reserved", "enrp.udp_transport_reserved", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_udp_lite_port, { "Port", "enrp.udp_lite_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_udp_lite_reserved, { "Reserved", "enrp.udp_lite_transport_reserved", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_policy_type, { "Policy Type", "enrp.pool_member_selection_policy_type", FT_UINT32, BASE_HEX, VALS(policy_type_values), 0x0, NULL, HFILL } },
{ &hf_policy_weight, { "Policy Weight", "enrp.pool_member_selection_policy_weight", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_policy_priority, { "Policy Priority", "enrp.pool_member_selection_policy_priority", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_policy_load, { "Policy Load", "enrp.pool_member_selection_policy_load", FT_DOUBLE, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_policy_degradation, { "Policy Degradation", "enrp.pool_member_selection_policy_degradation", FT_DOUBLE, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_policy_loaddpf, { "Policy Load DPF", "enrp.pool_member_selection_policy_load_dpf", FT_DOUBLE, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_policy_weightdpf, { "Policy Weight DPF", "enrp.pool_member_selection_policy_weight_dpf", FT_DOUBLE, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_policy_distance, { "Policy Distance", "enrp.pool_member_selection_policy_distance", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_policy_value, { "Policy Value", "enrp.pool_member_selection_policy_value", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_pool_handle, { "Pool Handle", "enrp.pool_handle_pool_handle", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_pe_pe_identifier, { "PE Identifier", "enrp.pool_element_pe_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
{ &hf_home_enrp_id, { "Home ENRP Server Identifier", "enrp.pool_element_home_enrp_server_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
{ &hf_reg_life, { "Registration Life", "enrp.pool_element_registration_life", FT_INT32, BASE_DEC|BASE_UNIT_STRING, &units_milliseconds, 0x0, NULL, HFILL } },
{ &hf_server_identifier, { "Server Identifier", "enrp.server_information_server_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
{ &hf_cookie, { "Cookie", "enrp.cookie", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_pe_identifier, { "PE Identifier", "enrp.pe_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
{ &hf_pe_checksum, { "PE Checksum", "enrp.pe_checksum", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
{ &hf_sender_servers_id, { "Sender Server's ID", "enrp.sender_servers_id", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
{ &hf_receiver_servers_id, { "Receiver Server's ID", "enrp.receiver_servers_id", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
{ &hf_target_servers_id, { "Target Server's ID", "enrp.target_servers_id", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
{ &hf_update_action, { "Update Action", "enrp.update_action", FT_UINT16, BASE_DEC, VALS(update_action_values), 0x0, NULL, HFILL } },
{ &hf_pmu_reserved, { "Reserved", "enrp.reserved", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
{ &hf_reply_required_bit, { "R Bit", "enrp.r_bit", FT_BOOLEAN, 8, TFS(&reply_required_bit_value), REPLY_REQUIRED_BIT_MASK, NULL, HFILL } },
{ &hf_own_children_only_bit, { "W Bit", "enrp.w_bit", FT_BOOLEAN, 8, TFS(&own_children_only_bit_value), OWN_CHILDREN_ONLY_BIT_MASK, NULL, HFILL } },
{ &hf_more_to_send_bit, { "M Bit", "enrp.m_bit", FT_BOOLEAN, 8, TFS(&more_to_send_bit_value), MORE_TO_SEND_BIT_MASK, NULL, HFILL } },
{ &hf_reject_bit, { "R Bit", "enrp.r_bit", FT_BOOLEAN, 8, TFS(&reject_bit_value), REJECT_BIT_MASK, NULL, HFILL } },
{ &hf_tos_bit, { "T Bit", "enrp.t_bit", FT_BOOLEAN, 8, TFS(&tos_bit_value), TOS_BIT_MASK, NULL, HFILL } },
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_enrp,
&ett_enrp_parameter,
&ett_enrp_cause,
&ett_enrp_flags,
};
static tap_param enrp_stat_params[] = {
{ PARAM_FILTER, "filter", "Filter", NULL, TRUE }
};
static stat_tap_table_ui enrp_stat_table = {
REGISTER_STAT_GROUP_RSERPOOL,
"ENRP Statistics",
"enrp",
"enrp,stat",
enrp_stat_init,
enrp_stat_packet,
enrp_stat_reset,
NULL,
NULL,
sizeof(enrp_stat_fields)/sizeof(stat_tap_table_item), enrp_stat_fields,
sizeof(enrp_stat_params)/sizeof(tap_param), enrp_stat_params,
NULL,
0
};
/* Register the protocol name and description */
proto_enrp = proto_register_protocol("Endpoint Handlespace Redundancy Protocol", "ENRP", "enrp");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_enrp, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
enrp_tap = register_tap("enrp");
register_stat_tap_table_ui(&enrp_stat_table);
}
void
proto_reg_handoff_enrp(void)
{
dissector_handle_t enrp_handle;
enrp_handle = create_dissector_handle(dissect_enrp, proto_enrp);
dissector_add_uint("sctp.ppi", ENRP_PAYLOAD_PROTOCOL_ID, enrp_handle);
dissector_add_uint("sctp.port", ENRP_SCTP_PORT, enrp_handle);
dissector_add_uint_with_preference("udp.port", ENRP_UDP_PORT, enrp_handle);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local Variables:
* c-basic-offset: 2
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=2 tabstop=8 expandtab:
* :indentSize=2:tabSize=8:noTabs=true:
*/
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