+++ /dev/null
-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <stdarg.h>
-#include <string.h>
-#include <stdio.h>
-#include <errno.h>
-#include <stdint.h>
-#include <unistd.h>
-#include <inttypes.h>
-
-#include <sys/queue.h>
-#include <sys/stat.h>
-
-#include <rte_common.h>
-#include <rte_byteorder.h>
-#include <rte_log.h>
-#include <rte_debug.h>
-#include <rte_cycles.h>
-#include <rte_memory.h>
-#include <rte_memcpy.h>
-#include <rte_memzone.h>
-#include <rte_launch.h>
-#include <rte_eal.h>
-#include <rte_per_lcore.h>
-#include <rte_lcore.h>
-#include <rte_atomic.h>
-#include <rte_branch_prediction.h>
-#include <rte_ring.h>
-#include <rte_memory.h>
-#include <rte_mempool.h>
-#include <rte_mbuf.h>
-#include <rte_interrupts.h>
-#include <rte_pci.h>
-#include <rte_ether.h>
-#include <rte_ethdev.h>
-#include <rte_ip.h>
-#include <rte_string_fns.h>
-
-#include "testpmd.h"
-
-#define BURST_TX_WAIT_US 10
-#define BURST_TX_RETRIES 5
-
-/*
- * Global variables that control number of retires and
- * timeout (in us) between retires.
- */
-uint32_t burst_tx_delay_time = BURST_TX_WAIT_US;
-uint32_t burst_tx_retry_num = BURST_TX_RETRIES;
-
-/*
- * Forwarding of packets in MAC mode with a wait and retry on TX to reduce packet loss.
- * Change the source and the destination Ethernet addressed of packets
- * before forwarding them.
- */
-static void
-pkt_burst_mac_retry_forward(struct fwd_stream *fs)
-{
- struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
- struct rte_mbuf *mb;
- struct ether_hdr *eth_hdr;
- uint32_t retry;
- uint16_t nb_rx;
- uint16_t nb_tx;
- uint16_t i;
-#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
- uint64_t start_tsc;
- uint64_t end_tsc;
- uint64_t core_cycles;
-#endif
-
-#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
- start_tsc = rte_rdtsc();
-#endif
-
- /*
- * Receive a burst of packets and forward them.
- */
- nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
- nb_pkt_per_burst);
- if (unlikely(nb_rx == 0))
- return;
-
-#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
- fs->rx_burst_stats.pkt_burst_spread[nb_rx]++;
-#endif
- fs->rx_packets += nb_rx;
- for (i = 0; i < nb_rx; i++) {
- mb = pkts_burst[i];
- eth_hdr = rte_pktmbuf_mtod(mb, struct ether_hdr *);
- ether_addr_copy(&peer_eth_addrs[fs->peer_addr],
- ð_hdr->d_addr);
- ether_addr_copy(&ports[fs->tx_port].eth_addr,
- ð_hdr->s_addr);
- }
- nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_rx);
-
- /*
- * If not all packets have been TX'd then wait and retry.
- */
- if (unlikely(nb_tx < nb_rx)) {
- for (retry = 0; retry < burst_tx_retry_num; retry++) {
- rte_delay_us(burst_tx_delay_time);
- nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue,
- &pkts_burst[nb_tx], nb_rx - nb_tx);
- if (nb_tx == nb_rx)
- break;
- }
- }
-
- fs->tx_packets += nb_tx;
-#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
- fs->tx_burst_stats.pkt_burst_spread[nb_tx]++;
-#endif
- if (unlikely(nb_tx < nb_rx)) {
- fs->fwd_dropped += (nb_rx - nb_tx);
- do {
- rte_pktmbuf_free(pkts_burst[nb_tx]);
- } while (++nb_tx < nb_rx);
- }
-#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
- end_tsc = rte_rdtsc();
- core_cycles = (end_tsc - start_tsc);
- fs->core_cycles = (uint64_t) (fs->core_cycles + core_cycles);
-#endif
-}
-
-struct fwd_engine mac_retry_fwd_engine = {
- .fwd_mode_name = "mac_retry",
- .port_fwd_begin = NULL,
- .port_fwd_end = NULL,
- .packet_fwd = pkt_burst_mac_retry_forward,
-};
Code Review / deb_dpdk.git / blobdiff