dunedaq::dpdklibs::IfaceXstats Struct Reference

#include <XstatsHelper.hpp>

Public Member Functions
	IfaceXstats ()
	~IfaceXstats ()
void	clear ()
void	setup (int iface)
void	reset_counters ()
void	poll ()
void	stop ()

Public Attributes
int	m_iface_id
bool	m_enabled = false
struct rte_eth_stats	m_eth_stats
struct rte_eth_xstat_name *	m_xstats_names
uint64_t *	m_xstats_ids
uint64_t *	m_xstats_values
int	m_len

Detailed Description

Definition at line 8 of file XstatsHelper.hpp.

Constructor & Destructor Documentation

IfaceXstats()

dunedaq::dpdklibs::IfaceXstats::IfaceXstats ( )

inline

Definition at line 10 of file XstatsHelper.hpp.

{}

~IfaceXstats()

dunedaq::dpdklibs::IfaceXstats::~IfaceXstats ( )

inline

Definition at line 11 of file XstatsHelper.hpp.

{ clear(); }

Member Function Documentation

clear()

void dunedaq::dpdklibs::IfaceXstats::clear ( )

inline

Definition at line 13 of file XstatsHelper.hpp.

  {
    if (m_xstats_values != nullptr) {
      free(m_xstats_values);
    }
    if (m_xstats_ids != nullptr) {
      free(m_xstats_ids);
    }
    if (m_xstats_names != nullptr) {
      free(m_xstats_names);
    }
    m_len = 0;
  }

poll()

void dunedaq::dpdklibs::IfaceXstats::poll ( )

inline

Definition at line 80 of file XstatsHelper.hpp.

  {
    if (m_enabled) {
      if (m_len != rte_eth_xstats_get_by_id(m_iface_id, nullptr, m_xstats_values, m_len)) {
        TLOG() << "Cannot get xstat values!";
        //} else {
      }
 
      rte_eth_stats_get(m_iface_id, &m_eth_stats);
    }
  }

reset_counters()

void dunedaq::dpdklibs::IfaceXstats::reset_counters ( )

inline

Definition at line 70 of file XstatsHelper.hpp.

  {
    if (m_enabled) {
      rte_eth_xstats_reset(m_iface_id); //{
      //  TLOG() << "Cannot reset xstat values!";
      //} else {
      //}
    }
  }

setup()

void dunedaq::dpdklibs::IfaceXstats::setup ( int iface )

inline

Definition at line 27 of file XstatsHelper.hpp.

  {
    m_iface_id = iface;
    rte_eth_stats_reset(m_iface_id);
    rte_eth_xstats_reset(m_iface_id);
 
    // Get number of stats
    m_len = rte_eth_xstats_get_names_by_id(m_iface_id, NULL, 0, NULL);
    if (m_len < 0) {
      printf("Cannot get xstats count\n");
    }
 
    // Get names of HW registered stat fields
    m_xstats_names = (rte_eth_xstat_name*)(malloc(sizeof(struct rte_eth_xstat_name) * m_len));
    if (m_xstats_names == nullptr) {
      printf("Cannot allocate memory for xstat names\n");
    }
 
    // Retrieve xstats names, passing NULL for IDs to return all statistics
    if (m_len != rte_eth_xstats_get_names(m_iface_id, m_xstats_names, m_len)) {
      printf("Cannot get xstat names\n");
    }
 
    // Allocate value fields
    m_xstats_values = (uint64_t*)(malloc(sizeof(m_xstats_values) * m_len));
    if (m_xstats_values == nullptr) {
      printf("Cannot allocate memory for xstats\n");
    }
 
    // Getting xstats values (this is that we call in a loop/get_info
    if (m_len != rte_eth_xstats_get_by_id(m_iface_id, nullptr, m_xstats_values, m_len)) {
      printf("Cannot get xstat values\n");
    }
 
    // Print all xstats names and values to be amazed (WOW!)
    TLOG() << "Registered HW based metrics: ";
    for (int i = 0; i < m_len; i++) {
      TLOG() << "  XName: " << m_xstats_names[i].name;
    }
 
    m_enabled = true;
  };

stop()

void dunedaq::dpdklibs::IfaceXstats::stop ( )

inline

Definition at line 92 of file XstatsHelper.hpp.

  {
    m_enabled = false;
    clear();
    TLOG() << "XstatsHelper disabled.";
  }

Member Data Documentation

m_enabled

bool dunedaq::dpdklibs::IfaceXstats::m_enabled = false

Definition at line 100 of file XstatsHelper.hpp.

m_eth_stats

struct rte_eth_stats dunedaq::dpdklibs::IfaceXstats::m_eth_stats

Definition at line 101 of file XstatsHelper.hpp.

m_iface_id

int dunedaq::dpdklibs::IfaceXstats::m_iface_id

Definition at line 99 of file XstatsHelper.hpp.

m_len

int dunedaq::dpdklibs::IfaceXstats::m_len

Definition at line 105 of file XstatsHelper.hpp.

m_xstats_ids

uint64_t* dunedaq::dpdklibs::IfaceXstats::m_xstats_ids

Definition at line 103 of file XstatsHelper.hpp.

m_xstats_names

struct rte_eth_xstat_name* dunedaq::dpdklibs::IfaceXstats::m_xstats_names

Definition at line 102 of file XstatsHelper.hpp.

m_xstats_values

uint64_t* dunedaq::dpdklibs::IfaceXstats::m_xstats_values

Definition at line 104 of file XstatsHelper.hpp.

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The documentation for this struct was generated from the following file:

• /github/workspace/dunedaq/sourcecode/dpdklibs/include/dpdklibs/XstatsHelper.hpp