dunedaq::dpdklibs::sender::DpdkTxBackend Struct Reference

#include <DpdkTxBackend.hpp>

Public Member Functions
void *	alloc ()
std::uint8_t *	prepare (void *buf, std::size_t bytes)
bool	transmit (void *buf)
void	free (void *buf)

Public Attributes
rte_mempool *	pool = nullptr
std::uint16_t	port = 0
std::uint16_t	queue = 0

Detailed Description

Definition at line 23 of file DpdkTxBackend.hpp.

Member Function Documentation

alloc()

void * dunedaq::dpdklibs::sender::DpdkTxBackend::alloc

(

)

Definition at line 22 of file DpdkTxBackend.cpp.

{
  return rte_pktmbuf_alloc(pool);
}

free()

void dunedaq::dpdklibs::sender::DpdkTxBackend::free

(

void *

buf

)

Definition at line 50 of file DpdkTxBackend.cpp.

{
  rte_pktmbuf_free(static_cast<rte_mbuf*>(buf));
}

prepare()

std::uint8_t * dunedaq::dpdklibs::sender::DpdkTxBackend::prepare	(	void *	buf,
		std::size_t	bytes )

Definition at line 28 of file DpdkTxBackend.cpp.

{
  auto* mbuf = static_cast<rte_mbuf*>(buf);
  char* dst = rte_pktmbuf_append(mbuf, static_cast<std::uint16_t>(bytes)); // NOLINT(build/unsigned)
  if (dst == nullptr) {
    return nullptr;
  }
  mbuf->l2_len = static_cast<std::uint16_t>(sizeof(rte_ether_hdr)); // NOLINT(build/unsigned)
  mbuf->l3_len = static_cast<std::uint16_t>(sizeof(rte_ipv4_hdr));  // NOLINT(build/unsigned)
  mbuf->l4_len = static_cast<std::uint16_t>(sizeof(rte_udp_hdr));   // NOLINT(build/unsigned)
  return reinterpret_cast<std::uint8_t*>(dst);                      // NOLINT
}

transmit()

bool dunedaq::dpdklibs::sender::DpdkTxBackend::transmit

(

void *

buf

)

Definition at line 42 of file DpdkTxBackend.cpp.

{
  auto* mbuf = static_cast<rte_mbuf*>(buf);
  rte_mbuf* one_packet = mbuf;
  return rte_eth_tx_burst(port, queue, &one_packet, 1) == 1;
}

Member Data Documentation

pool

rte_mempool* dunedaq::dpdklibs::sender::DpdkTxBackend::pool = nullptr

Definition at line 25 of file DpdkTxBackend.hpp.

port

std::uint16_t dunedaq::dpdklibs::sender::DpdkTxBackend::port = 0

Definition at line 26 of file DpdkTxBackend.hpp.

queue

std::uint16_t dunedaq::dpdklibs::sender::DpdkTxBackend::queue = 0

Definition at line 27 of file DpdkTxBackend.hpp.

---

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

• /github/workspace/dunedaq/sourcecode/dpdklibs/include/dpdklibs/sender/DpdkTxBackend.hpp
• /github/workspace/dunedaq/sourcecode/dpdklibs/src/sender/DpdkTxBackend.cpp