3c4426db54
Calling Rx/Tx functions on a stopped queue is not supported.
Do not run packet forwarding for streams that use stopped queues.
Each stream has a read-only "disabled" field,
so that lcore function can skip such streams.
Forwarding engines can set this field
using a new "stream_init" callback function
by checking relevant queue states,
which are stored along with queue configurations
(not all PMDs implement rte_eth_rx/tx_queue_info_get()
to query the state from there).
Fixes: 5f4ec54f1d ("testpmd: queue start and stop")
Cc: stable@dpdk.org
Signed-off-by: Dmitry Kozlyuk <dkozlyuk@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
119 lines
2.7 KiB
C
119 lines
2.7 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright 2014-2020 Mellanox Technologies, Ltd
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*/
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#include <stdarg.h>
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#include <string.h>
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#include <stdio.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_memcpy.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_branch_prediction.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_ip.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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#if defined(RTE_ARCH_X86)
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#include "macswap_sse.h"
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#elif defined(__ARM_NEON)
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#include "macswap_neon.h"
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#else
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#include "macswap.h"
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#endif
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/*
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* MAC swap forwarding mode: Swap the source and the destination Ethernet
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* addresses of packets before forwarding them.
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*/
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static void
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pkt_burst_mac_swap(struct fwd_stream *fs)
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{
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struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
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struct rte_port *txp;
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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, pkts_burst,
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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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txp = &ports[fs->tx_port];
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do_macswap(pkts_burst, nb_rx, txp);
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nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, 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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static void
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stream_init_mac_swap(struct fwd_stream *fs)
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{
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bool rx_stopped, tx_stopped;
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rx_stopped = ports[fs->rx_port].rxq[fs->rx_queue].state ==
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RTE_ETH_QUEUE_STATE_STOPPED;
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tx_stopped = ports[fs->tx_port].txq[fs->tx_queue].state ==
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RTE_ETH_QUEUE_STATE_STOPPED;
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fs->disabled = rx_stopped || tx_stopped;
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}
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struct fwd_engine mac_swap_engine = {
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.fwd_mode_name = "macswap",
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.port_fwd_begin = NULL,
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.port_fwd_end = NULL,
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.stream_init = stream_init_mac_swap,
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.packet_fwd = pkt_burst_mac_swap,
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};
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