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New version of libsflow with multiple improvements about protocol support and developer experience

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This commit is contained in:
Pavel Odintsov 2024-07-16 18:28:22 +03:00
parent 394143340e
commit 1e929f54a2
2 changed files with 221 additions and 116 deletions
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57
src/libsflow/libsflow.cpp
View File

@ -58,11 +58,11 @@ std::tuple<int32_t, int32_t> split_mixed_enterprise_and_format(int32_t enterpris
// Convert arbitrary flow record structure with record samples to well formed
// data
bool get_records(std::vector<record_tuple_t>& vector_tuple,
uint8_t* flow_record_zone_start,
const uint8_t* flow_record_zone_start,
uint32_t number_of_flow_records,
uint8_t* current_packet_end,
const uint8_t* current_packet_end,
bool& padding_found) {
uint8_t* flow_record_start = flow_record_zone_start;
const uint8_t* flow_record_start = flow_record_zone_start;
for (uint32_t i = 0; i < number_of_flow_records; i++) {
// Check that we have at least 2 4 byte integers here
@ -86,8 +86,8 @@ bool get_records(std::vector<record_tuple_t>& vector_tuple,
return false;
}
uint8_t* flow_record_data_ptr = flow_record_start + sizeof(element_type) + sizeof(element_length);
uint8_t* flow_record_end = flow_record_data_ptr + element_length;
const uint8_t* flow_record_data_ptr = flow_record_start + sizeof(element_type) + sizeof(element_length);
const uint8_t* flow_record_end = flow_record_data_ptr + element_length;
if (flow_record_end > current_packet_end) {
logger << log4cpp::Priority::ERROR << sflow_parser_log_prefix << "flow record payload is outside packet bounds";
@ -123,11 +123,11 @@ bool get_records(std::vector<record_tuple_t>& vector_tuple,
// Convert arbitrary data structure with samples to vector with meta data and
// pointers to real data
bool get_all_samples(std::vector<sample_tuple_t>& vector_sample,
uint8_t* samples_block_start,
uint8_t* total_packet_end,
const uint8_t* samples_block_start,
const uint8_t* total_packet_end,
int32_t samples_count,
bool& discovered_padding) {
uint8_t* sample_start = samples_block_start;
const uint8_t* sample_start = samples_block_start;
for (int i = 0; i < samples_count; i++) {
if (total_packet_end - sample_start < 8) {
@ -154,9 +154,9 @@ bool get_all_samples(std::vector<sample_tuple_t>& vector_sample,
// Get last 12 bits as format, zeroify first 20 bits
int32_t integer_format = enterprise_with_format & 0b00000000000000000000111111111111;
uint8_t* data_block_start = sample_start + sizeof(enterprise_with_format) + sizeof(sample_length);
const uint8_t* data_block_start = sample_start + sizeof(enterprise_with_format) + sizeof(sample_length);
// Skip format,length and data
uint8_t* this_sample_end = data_block_start + sample_length;
const uint8_t* this_sample_end = data_block_start + sample_length;
// Check sample bounds inside packet
if (this_sample_end > total_packet_end) {
@ -186,19 +186,19 @@ bool get_all_samples(std::vector<sample_tuple_t>& vector_sample,
return true;
}
int32_t get_int_value_by_32bit_shift(uint8_t* payload_ptr, unsigned int shift) {
int32_t get_int_value_by_32bit_shift(const uint8_t* payload_ptr, unsigned int shift) {
return fast_ntoh(*(int32_t*)(payload_ptr + shift * 4));
}
bool get_all_counter_records(std::vector<counter_record_sample_t>& counter_record_sample_vector,
uint8_t* data_block_start,
uint8_t* data_block_end,
const uint8_t* data_block_start,
const uint8_t* data_block_end,
uint32_t number_of_records) {
uint8_t* record_start = data_block_start;
const uint8_t* record_start = data_block_start;
for (uint32_t i = 0; i < number_of_records; i++) {
uint8_t* payload_ptr = record_start + sizeof(uint32_t) + sizeof(uint32_t);
const uint8_t* payload_ptr = record_start + sizeof(uint32_t) + sizeof(uint32_t);
if (payload_ptr >= data_block_end) {
logger << log4cpp::Priority::ERROR << sflow_parser_log_prefix << "we could not read flow counter record, too short packet";
@ -218,7 +218,7 @@ bool get_all_counter_records(std::vector<counter_record_sample_t>& counter_recor
return false;
}
uint8_t* current_record_end = payload_ptr + record_length;
const uint8_t* current_record_end = payload_ptr + record_length;
if (current_record_end > data_block_end) {
logger << log4cpp::Priority::ERROR << sflow_parser_log_prefix << "record payload is outside of record border";
@ -233,8 +233,14 @@ bool get_all_counter_records(std::vector<counter_record_sample_t>& counter_recor
// std::cout << "enterprise: " << enterprise << " integer_format: " <<
// integer_format <<
// std::endl;
counter_record_sample_t counter_record_sample{};
counter_record_sample_vector.push_back(std::make_tuple(enterprise, integer_format, record_length, payload_ptr));
counter_record_sample.enterprise = enterprise;
counter_record_sample.format = integer_format;
counter_record_sample.length = record_length;
counter_record_sample.pointer = payload_ptr;
counter_record_sample_vector.push_back(counter_record_sample);
record_start = current_record_end;
}
@ -258,7 +264,7 @@ sflow_sample_type_t sflow_sample_type_from_integer(int32_t format_as_integer) {
return static_cast<sflow_sample_type_t>(format_as_integer);
}
bool read_sflow_header(uint8_t* payload_ptr, unsigned int payload_length, sflow_packet_header_unified_accessor& sflow_header_accessor) {
bool read_sflow_header(const uint8_t* payload_ptr, unsigned int payload_length, sflow_packet_header_unified_accessor& sflow_header_accessor) {
// zero sized packet
if (payload_ptr == NULL || payload_length == 0) {
logger << log4cpp::Priority::ERROR << sflow_parser_log_prefix << "zero sized packet could not be parsed";
@ -319,13 +325,10 @@ std::string print_counter_record_sample_vector(const std::vector<counter_record_
std::stringstream buffer;
int index = 0;
for (auto counter_record_sample : counter_record_sample_vector) {
buffer << "index: " << index << " enterprise: " << std::get<0>(counter_record_sample)
<< " format: " << std::get<1>(counter_record_sample) << " length: "
<< std::get<2>(counter_record_sample)
//<< " pointer: " << (void*)std::get<3>(counter_record_sample);
<< " pointer: "
<< "XXX";
for (const auto& counter_record_sample : counter_record_sample_vector) {
buffer << "index: " << index << " enterprise: " << counter_record_sample.enterprise
<< " format: " << counter_record_sample.format << " length: " << counter_record_sample.length;
//<< " pointer: " << (void*)counter_record_sample.pointer;
index++;
@ -359,7 +362,7 @@ std::string print_vector_sample_tuple(const std::vector<sample_tuple_t>& vector_
return buffer.str();
}
bool read_sflow_counter_header(uint8_t* data_pointer,
bool read_sflow_counter_header(const uint8_t* data_pointer,
size_t data_length,
bool expanded,
sflow_counter_header_unified_accessor_t& sflow_counter_header_unified_accessor) {
@ -414,7 +417,7 @@ std::tuple<uint32_t, uint32_t> split_32bit_integer_by_2_and_30_bits(uint32_t ori
}
bool read_sflow_sample_header_unified(sflow_sample_header_unified_accessor_t& sflow_sample_header_unified_accessor,
uint8_t* data_pointer,
const uint8_t* data_pointer,
size_t data_length,
bool expanded) {

280
src/libsflow/libsflow.hpp
View File

@ -30,6 +30,14 @@ enum sflow_header_protocol {
SFLOW_HEADER_PROTOCOL_IPv6 = 12,
};
// https://sflow.org/sflow_version_5.txt
// Formats 1 & 2 apply only to an output interface and never to an input interface. A packet is always received on a single (possibly unknown) interface.
enum sflow_port_format {
SFLOW_PORT_FORMAT_SINGLE_INTERFACE = 0,
SFLOW_PORT_FORMAT_PACKET_DISCARDED = 1,
SFLOW_PORT_FORMAT_MULTIPLE_INTERFACES = 2,
};
// Old fashioned not typed enums for fast comparisons and assignments to
// integers
enum sflow_sample_type_not_typed_t {
@ -53,15 +61,19 @@ enum class sample_counter_types_t : unsigned int {
};
// These types are not sFlow protocol specific, we use them only in our own logic
// enterprise, format, length, pointer
typedef std::tuple<uint32_t, uint32_t, ssize_t, uint8_t*> counter_record_sample_t;
class counter_record_sample_t {
public:
uint32_t enterprise = 0;
uint32_t format = 0;
ssize_t length = 0;
const uint8_t* pointer = nullptr;
};
// Element type, pointer, length
typedef std::tuple<int32_t, uint8_t*, int32_t> record_tuple_t;
typedef std::tuple<int32_t, const uint8_t*, int32_t> record_tuple_t;
// Enterprise, integer_format, data_block_start, sample_length
typedef std::tuple<int32_t, int32_t, uint8_t*, size_t> sample_tuple_t;
typedef std::tuple<int32_t, int32_t, const uint8_t*, size_t> sample_tuple_t;
// We keep these prototypes here because we use them from our class definitions
std::tuple<uint32_t, uint32_t> split_32bit_integer_by_2_and_30_bits(uint32_t original_data);
@ -147,8 +159,11 @@ class __attribute__((__packed__)) sflow_sample_header_t {
uint32_t sampling_rate{ 0 }; // sampling ratio
uint32_t sample_pool{ 0 }; // number of sampled packets
uint32_t drops_count{ 0 }; // number of drops due to hardware overload
uint32_t input_port{ 0 }; // input port + 2 bits port type
uint32_t output_port{ 0 }; // output port + 2 bits port type
// For both _port fields we have first two 2 bits identifying format of interface and remaining 30 bits are port number
uint32_t input_port{ 0 }; // input port
uint32_t output_port{ 0 }; // output port
uint32_t number_of_flow_records{ 0 };
// Convert all fields to host byte order (little endian)
@ -203,8 +218,12 @@ class __attribute__((__packed__)) sflow_sample_expanded_header_t {
uint32_t sampling_rate = 0; // sampling ratio
uint32_t sample_pool = 0; // number of sampled packets
uint32_t drops_count = 0; // number of drops due to hardware overload
uint32_t input_port_type = 0; // input port type
uint32_t input_port_index = 0; // input port index
// Type 0 is single interface, 1 is discarded traffic, 2 is multiple interfaces
uint32_t input_port_type = 0; // input port type
uint32_t input_port_index = 0; // input port index
// Type 0 is single interface, 1 is discarded traffic, 2 is multiple interfaces
uint32_t output_port_type = 0; // output port type
uint32_t output_port_index = 0; // outpurt port index
uint32_t number_of_flow_records = 0;
@ -251,8 +270,12 @@ class sflow_sample_header_unified_accessor_t {
uint32_t sampling_rate = 0; // sampling ratio
uint32_t sample_pool = 0; // number of sampled packets
uint32_t drops_count = 0; // number of drops due to hardware overload
uint32_t input_port_type = 0; // input port type
uint32_t input_port_index = 0; // input port index
// Type 0 is single interface, 1 is discarded traffic, 2 is multiple interfaces
uint32_t input_port_type = 0; // input port type
uint32_t input_port_index = 0; // input port index
// Type 0 is single interface, 1 is discarded traffic, 2 is multiple interfaces
uint32_t output_port_type = 0; // output port type
uint32_t output_port_index = 0; // outpurt port index
uint32_t number_of_flow_records = 0;
@ -464,7 +487,7 @@ class sflow_packet_header_unified_accessor {
return original_payload_length;
}
std::string print() {
std::string print() const {
std::stringstream buffer;
buffer << "sflow_version: " << sflow_version << " "
@ -529,7 +552,7 @@ class __attribute__((__packed__)) sflow_counter_header_t {
number_of_counter_records = fast_ntoh(number_of_counter_records);
}
std::string print() {
std::string print() const {
std::stringstream buffer;
buffer << "sample_sequence_number: " << sample_sequence_number << " "
@ -557,7 +580,7 @@ class __attribute__((__packed__)) sflow_counter_expanded_header_t {
number_of_counter_records = fast_ntoh(number_of_counter_records);
}
std::string print() {
std::string print() const {
std::stringstream buffer;
buffer << "sample_sequence_number: " << sample_sequence_number << " "
@ -586,18 +609,23 @@ class sflow_counter_header_unified_accessor_t {
uint32_t get_sample_sequence_number() {
return sample_sequence_number;
}
uint32_t get_source_id_type() {
return source_id_type;
}
uint32_t get_source_id_index() {
return source_id_index;
}
uint32_t get_number_of_counter_records() {
return number_of_counter_records;
}
ssize_t get_original_payload_length() {
return original_payload_length;
}
bool get_expaned() {
return expanded;
}
@ -627,7 +655,7 @@ class sflow_counter_header_unified_accessor_t {
expanded = true;
}
std::string print() {
std::string print() const {
std::stringstream buffer;
buffer << "sample_sequence_number: " << sample_sequence_number << " "
@ -642,7 +670,7 @@ class sflow_counter_header_unified_accessor_t {
};
class __attribute__((__packed__)) ethernet_sflow_interface_counters_t {
public:
private:
uint32_t alignment_errors = 0;
uint32_t fcs_errors = 0;
uint32_t single_collision_frames = 0;
@ -657,41 +685,76 @@ class __attribute__((__packed__)) ethernet_sflow_interface_counters_t {
uint32_t internal_mac_receive_errors = 0;
uint32_t symbol_errors = 0;
ethernet_sflow_interface_counters_t(uint8_t* data_pointer) {
memcpy(this, data_pointer, sizeof(ethernet_sflow_interface_counters_t));
this->network_to_host_byte_order();
public:
uint32_t get_alignment_errors() const {
return fast_ntoh(alignment_errors);
}
void network_to_host_byte_order() {
alignment_errors = fast_ntoh(alignment_errors);
fcs_errors = fast_ntoh(alignment_errors);
single_collision_frames = fast_ntoh(single_collision_frames);
multiple_collision_frames = fast_ntoh(multiple_collision_frames);
sqe_test_errors = fast_ntoh(sqe_test_errors);
deferred_transmissions = fast_ntoh(deferred_transmissions);
late_collisions = fast_ntoh(late_collisions);
excessive_collisions = fast_ntoh(excessive_collisions);
internal_mac_transmit_errors = fast_ntoh(internal_mac_transmit_errors);
carrier_sense_errors = fast_ntoh(carrier_sense_errors);
frame_too_longs = fast_ntoh(frame_too_longs);
internal_mac_receive_errors = fast_ntoh(internal_mac_receive_errors);
symbol_errors = fast_ntoh(symbol_errors);
uint32_t get_fcs_errors() const {
return fast_ntoh(fcs_errors);
}
std::string print() {
uint32_t get_single_collision_frames() const {
return fast_ntoh(single_collision_frames);
}
uint32_t get_multiple_collision_frames() const {
return fast_ntoh(multiple_collision_frames);
}
uint32_t get_sqe_test_errors() const {
return fast_ntoh(sqe_test_errors);
}
uint32_t get_deferred_transmissions() const {
return fast_ntoh(deferred_transmissions);
}
uint32_t get_late_collisions() const {
return fast_ntoh(late_collisions);
}
uint32_t get_excessive_collisions() const {
return fast_ntoh(excessive_collisions);
}
uint32_t get_internal_mac_transmit_errors() const {
return fast_ntoh(internal_mac_transmit_errors);
}
uint32_t get_carrier_sense_errors() const {
return fast_ntoh(carrier_sense_errors);
}
uint32_t get_frame_too_longs() const {
return fast_ntoh(frame_too_longs);
}
uint32_t get_internal_mac_receive_errors() const {
return fast_ntoh(internal_mac_receive_errors);
}
uint32_t get_symbol_errors() const {
return fast_ntoh(symbol_errors);
}
std::string print() const {
std::stringstream buffer;
std::string delimiter = ",";
buffer << "alignment_errors: " << alignment_errors << delimiter << "fcs_errors: " << fcs_errors << delimiter
<< "single_collision_frames: " << single_collision_frames << delimiter
<< "multiple_collision_frames: " << multiple_collision_frames << delimiter << "sqe_test_errors: " << sqe_test_errors
<< delimiter << "deferred_transmissions: " << deferred_transmissions << delimiter
<< "late_collisions: " << late_collisions << delimiter << "excessive_collisions: " << excessive_collisions
<< delimiter << "internal_mac_transmit_errors: " << internal_mac_transmit_errors << delimiter
<< "carrier_sense_errors: " << carrier_sense_errors << delimiter << "frame_too_longs: " << frame_too_longs
<< delimiter << "internal_mac_receive_errors: " << internal_mac_receive_errors << delimiter
<< "symbol_errors: " << symbol_errors;
buffer << "alignment_errors: " << get_alignment_errors() << delimiter << "fcs_errors: " << get_fcs_errors()
<< delimiter << "single_collision_frames: " << get_single_collision_frames() << delimiter
<< "multiple_collision_frames: " << get_multiple_collision_frames() << delimiter
<< "sqe_test_errors: " << get_sqe_test_errors() << delimiter
<< "deferred_transmissions: " << get_deferred_transmissions() << delimiter
<< "late_collisions: " << get_late_collisions() << delimiter
<< "excessive_collisions: " << get_excessive_collisions() << delimiter
<< "internal_mac_transmit_errors: " << get_internal_mac_transmit_errors() << delimiter
<< "carrier_sense_errors: " << get_carrier_sense_errors() << delimiter
<< "frame_too_longs: " << get_frame_too_longs() << delimiter
<< "internal_mac_receive_errors: " << get_internal_mac_receive_errors() << delimiter
<< "symbol_errors: " << get_symbol_errors();
return buffer.str();
}
@ -701,7 +764,7 @@ static_assert(sizeof(ethernet_sflow_interface_counters_t) == 52, "Broken size fo
// http://www.sflow.org/SFLOW-STRUCTS5.txt
class __attribute__((__packed__)) generic_sflow_interface_counters_t {
public:
private:
uint32_t if_index = 0;
uint32_t if_type = 0;
uint64_t if_speed = 0;
@ -726,48 +789,88 @@ class __attribute__((__packed__)) generic_sflow_interface_counters_t {
uint32_t if_out_errors = 0;
uint32_t if_promiscuous_mode = 0;
generic_sflow_interface_counters_t(uint8_t* data_pointer) {
memcpy(this, data_pointer, sizeof(generic_sflow_interface_counters_t));
this->network_to_host_byte_order();
public:
uint32_t get_if_index() const {
return fast_ntoh(if_index);
}
void network_to_host_byte_order() {
if_index = fast_ntoh(if_index);
if_type = fast_ntoh(if_type);
if_speed = fast_ntoh(if_speed);
if_direction = fast_ntoh(if_direction);
if_status = fast_ntoh(if_status);
if_in_octets = fast_ntoh(if_in_octets);
if_in_ucast_pkts = fast_ntoh(if_in_ucast_pkts);
if_in_multicast_pkts = fast_ntoh(if_in_multicast_pkts);
if_in_broadcast_pkts = fast_ntoh(if_in_broadcast_pkts);
if_in_discards = fast_ntoh(if_in_discards);
if_in_errors = fast_ntoh(if_in_errors);
if_in_unknown_protos = fast_ntoh(if_in_unknown_protos);
if_out_octets = fast_ntoh(if_out_octets);
if_out_ucast_pkts = fast_ntoh(if_out_ucast_pkts);
if_out_multicast_pkts = fast_ntoh(if_out_multicast_pkts);
if_out_broadcast_pkts = fast_ntoh(if_out_broadcast_pkts);
if_out_discards = fast_ntoh(if_out_discards);
if_out_errors = fast_ntoh(if_out_errors);
if_promiscuous_mode = fast_ntoh(if_promiscuous_mode);
uint32_t get_if_type() const {
return fast_ntoh(if_type);
}
uint64_t get_if_speed() const {
return fast_ntoh(if_speed);
}
uint32_t get_if_direction() const {
return fast_ntoh(if_direction);
}
std::string print() {
uint32_t get_if_status() const {
return fast_ntoh(if_status);
}
uint64_t get_if_in_octets() const {
return fast_ntoh(if_in_octets);
}
uint32_t get_if_in_ucast_pkts() const {
return fast_ntoh(if_in_ucast_pkts);
}
uint32_t get_if_in_multicast_pkts() const {
return fast_ntoh(if_in_multicast_pkts);
}
uint32_t get_if_in_broadcast_pkts() const {
return fast_ntoh(if_in_broadcast_pkts);
}
uint32_t get_if_in_discards() const {
return fast_ntoh(if_in_discards);
}
uint32_t get_if_in_errors() const {
return fast_ntoh(if_in_errors);
}
uint32_t get_if_in_unknown_protos() const {
return fast_ntoh(if_in_unknown_protos);
}
uint64_t get_if_out_octets() const {
return fast_ntoh(if_out_octets);
}
uint32_t get_if_out_ucast_pkts() const {
return fast_ntoh(if_out_ucast_pkts);
}
uint32_t get_if_out_multicast_pkts() const {
return fast_ntoh(if_out_multicast_pkts);
}
uint32_t get_if_out_broadcast_pkts() const {
return fast_ntoh(if_out_broadcast_pkts);
}
uint32_t get_if_out_discards() const {
return fast_ntoh(if_out_discards);
}
uint32_t get_if_out_errors() const {
return fast_ntoh(if_out_errors);
}
uint32_t get_if_promiscuous_mode() const {
return fast_ntoh(if_promiscuous_mode);
}
std::string print() const {
std::stringstream buffer;
std::string delimiter = ",";
buffer << "if_index: " << if_index << delimiter << "if_type: " << if_type << delimiter << "if_speed: " << if_speed
<< delimiter << "if_direction: " << if_direction << delimiter << "if_status: " << if_status << delimiter
<< "if_in_octets: " << if_in_octets << delimiter << "if_in_ucast_pkts: " << if_in_ucast_pkts << delimiter
<< "if_in_multicast_pkts: " << if_in_multicast_pkts << delimiter << "if_in_broadcast_pkts: " << if_in_broadcast_pkts
<< delimiter << "if_in_discards: " << if_in_discards << delimiter << "if_in_errors: " << if_in_errors
<< delimiter << "if_in_unknown_protos: " << if_in_unknown_protos << delimiter
<< "if_out_octets: " << if_out_octets << delimiter << "if_out_ucast_pkts: " << if_out_ucast_pkts << delimiter
<< "if_out_multicast_pkts: " << if_out_multicast_pkts << delimiter << "if_out_broadcast_pkts: " << if_out_broadcast_pkts
<< delimiter << "if_out_discards: " << if_out_discards << delimiter << "if_out_errors: " << if_out_errors
<< delimiter << "if_promiscuous_mode: " << if_promiscuous_mode;
buffer << "if_index: " << get_if_index() << delimiter << "if_type: " << get_if_type() << delimiter
<< "if_speed: " << get_if_speed() << delimiter << "if_direction: " << get_if_direction() << delimiter
<< "if_status: " << get_if_status() << delimiter << "if_in_octets: " << get_if_in_octets() << delimiter
<< "if_in_ucast_pkts: " << get_if_in_ucast_pkts() << delimiter
<< "if_in_multicast_pkts: " << get_if_in_multicast_pkts() << delimiter
<< "if_in_broadcast_pkts: " << get_if_in_broadcast_pkts() << delimiter
<< "if_in_discards: " << get_if_in_discards() << delimiter << "if_in_errors: " << get_if_in_errors()
<< delimiter << "if_in_unknown_protos: " << get_if_in_unknown_protos() << delimiter
<< "if_out_octets: " << get_if_out_octets() << delimiter << "if_out_ucast_pkts: " << get_if_out_ucast_pkts()
<< delimiter << "if_out_multicast_pkts: " << get_if_out_multicast_pkts() << delimiter
<< "if_out_broadcast_pkts: " << get_if_out_broadcast_pkts() << delimiter
<< "if_out_discards: " << get_if_out_discards() << delimiter << "if_out_errors: " << get_if_out_errors()
<< delimiter << "if_promiscuous_mode: " << get_if_promiscuous_mode();
return buffer.str();
}
@ -776,13 +879,13 @@ class __attribute__((__packed__)) generic_sflow_interface_counters_t {
static_assert(sizeof(generic_sflow_interface_counters_t) == 88, "Broken size for generic_sflow_interface_counters_t");
// High level processing functions. They uses classes defined upper
bool read_sflow_header(uint8_t* payload_ptr, unsigned int payload_length, sflow_packet_header_unified_accessor& sflow_header_accessor);
bool read_sflow_counter_header(uint8_t* data_pointer,
bool read_sflow_header(const uint8_t* payload_ptr, unsigned int payload_length, sflow_packet_header_unified_accessor& sflow_header_accessor);
bool read_sflow_counter_header(const uint8_t* data_pointer,
size_t data_length,
bool expanded,
sflow_counter_header_unified_accessor_t& sflow_counter_header_unified_accessor);
bool read_sflow_sample_header_unified(sflow_sample_header_unified_accessor_t& sflow_sample_header_unified_accessor,
uint8_t* data_pointer,
const uint8_t* data_pointer,
size_t data_length,
bool expanded);
@ -799,19 +902,18 @@ std::tuple<int32_t, int32_t> split_mixed_enterprise_and_format(int32_t enterpris
unsigned int get_flow_enum_type_as_number(const sflow_sample_type_t& value);
bool get_all_samples(std::vector<sample_tuple_t>& vector_sample,
uint8_t* samples_block_start,
uint8_t* total_packet_end,
const uint8_t* samples_block_start,
const uint8_t* total_packet_end,
int32_t samples_count,
bool& discovered_padding);
bool get_records(std::vector<record_tuple_t>& vector_tuple,
uint8_t* flow_record_zone_start,
const uint8_t* flow_record_zone_start,
uint32_t number_of_flow_records,
uint8_t* current_packet_end,
const uint8_t* current_packet_end,
bool& padding_found);
bool get_all_counter_records(std::vector<counter_record_sample_t>& counter_record_sample_vector,
uint8_t* data_block_start,
uint8_t* data_block_end,
const uint8_t* data_block_start,
const uint8_t* data_block_end,
uint32_t number_of_records);
int32_t get_int_value_by_32bit_shift(uint8_t* payload_ptr, unsigned int shift);
int32_t get_int_value_by_32bit_shift(const uint8_t* payload_ptr, unsigned int shift);