0e4b196326
Convert CONFIG_RTE_TEST_PMD_RECORD_BURST_STATS to a runtime configuration. Signed-off-by: Dharmik Thakkar <dharmik.thakkar@arm.com> Tested-by: Phil Yang <phil.yang@arm.com> Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
98 lines
2.2 KiB
C
98 lines
2.2 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <inttypes.h>
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#include <sys/queue.h>
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#include <sys/stat.h>
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#include <rte_common.h>
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#include <rte_byteorder.h>
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#include <rte_log.h>
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#include <rte_debug.h>
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#include <rte_cycles.h>
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#include <rte_memory.h>
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#include <rte_launch.h>
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#include <rte_eal.h>
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#include <rte_per_lcore.h>
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#include <rte_lcore.h>
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#include <rte_atomic.h>
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#include <rte_branch_prediction.h>
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#include <rte_memcpy.h>
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#include <rte_mempool.h>
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#include <rte_mbuf.h>
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#include <rte_interrupts.h>
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#include <rte_pci.h>
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#include <rte_ether.h>
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#include <rte_ethdev.h>
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#include <rte_string_fns.h>
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#include <rte_flow.h>
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#include "testpmd.h"
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/*
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* Forwarding of packets in I/O mode.
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* Forward packets "as-is".
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* This is the fastest possible forwarding operation, as it does not access
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* to packets data.
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*/
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static void
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pkt_burst_io_forward(struct fwd_stream *fs)
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{
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struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
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uint16_t nb_rx;
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uint16_t nb_tx;
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uint32_t retry;
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uint64_t start_tsc = 0;
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get_start_cycles(&start_tsc);
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/*
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* Receive a burst of packets and forward them.
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*/
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nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue,
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pkts_burst, nb_pkt_per_burst);
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inc_rx_burst_stats(fs, nb_rx);
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if (unlikely(nb_rx == 0))
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return;
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fs->rx_packets += nb_rx;
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nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue,
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pkts_burst, nb_rx);
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/*
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* Retry if necessary
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*/
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if (unlikely(nb_tx < nb_rx) && fs->retry_enabled) {
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retry = 0;
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while (nb_tx < nb_rx && retry++ < burst_tx_retry_num) {
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rte_delay_us(burst_tx_delay_time);
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nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue,
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&pkts_burst[nb_tx], nb_rx - nb_tx);
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}
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}
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fs->tx_packets += nb_tx;
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inc_tx_burst_stats(fs, nb_tx);
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if (unlikely(nb_tx < nb_rx)) {
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fs->fwd_dropped += (nb_rx - nb_tx);
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do {
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rte_pktmbuf_free(pkts_burst[nb_tx]);
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} while (++nb_tx < nb_rx);
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}
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get_end_cycles(fs, start_tsc);
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}
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struct fwd_engine io_fwd_engine = {
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.fwd_mode_name = "io",
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.port_fwd_begin = NULL,
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.port_fwd_end = NULL,
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.packet_fwd = pkt_burst_io_forward,
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};
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