dunedaq::dpdklibs::IfaceXstats Struct Reference

#include <XstatsHelper.hpp>

Collaboration diagram for dunedaq::dpdklibs::IfaceXstats:

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

Public Attributes
int	m_iface_id
bool	m_allocated = 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 9 of file XstatsHelper.hpp.

{}

~IfaceXstats()

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

inline

Definition at line 10 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);
      }
    }

Member Function Documentation

poll()

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

inline

Definition at line 74 of file XstatsHelper.hpp.

                {
      if (m_allocated) {
        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 65 of file XstatsHelper.hpp.

                          {
      if (m_allocated) {
        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 23 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_allocated = true;
    };

Member Data Documentation

m_allocated

bool dunedaq::dpdklibs::IfaceXstats::m_allocated = false

Definition at line 86 of file XstatsHelper.hpp.

m_eth_stats

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

Definition at line 87 of file XstatsHelper.hpp.

m_iface_id

int dunedaq::dpdklibs::IfaceXstats::m_iface_id

Definition at line 85 of file XstatsHelper.hpp.

m_len

int dunedaq::dpdklibs::IfaceXstats::m_len

Definition at line 91 of file XstatsHelper.hpp.

m_xstats_ids

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

Definition at line 89 of file XstatsHelper.hpp.

m_xstats_names

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

Definition at line 88 of file XstatsHelper.hpp.

m_xstats_values

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

Definition at line 90 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