867a6c66ec
Increase the default RX/TX ring sizes to 1024/1024 to accommodate for NICs with higher throughput (25G, 40G etc) Signed-off-by: Kevin Laatz <kevin.laatz@intel.com> Acked-by: Bruce Richardson <bruce.richardson@intel.com> Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
216 lines
5.3 KiB
C
216 lines
5.3 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2015 Intel Corporation
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*/
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#include <stdint.h>
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#include <inttypes.h>
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#include <rte_eal.h>
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#include <rte_ethdev.h>
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#include <rte_cycles.h>
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#include <rte_lcore.h>
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#include <rte_mbuf.h>
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#define RX_RING_SIZE 1024
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#define TX_RING_SIZE 1024
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#define NUM_MBUFS 8191
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#define MBUF_CACHE_SIZE 250
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#define BURST_SIZE 32
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static const struct rte_eth_conf port_conf_default = {
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.rxmode = {
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.max_rx_pkt_len = ETHER_MAX_LEN,
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.ignore_offload_bitfield = 1,
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},
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};
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static unsigned nb_ports;
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static struct {
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uint64_t total_cycles;
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uint64_t total_pkts;
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} latency_numbers;
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static uint16_t
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add_timestamps(uint16_t port __rte_unused, uint16_t qidx __rte_unused,
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struct rte_mbuf **pkts, uint16_t nb_pkts,
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uint16_t max_pkts __rte_unused, void *_ __rte_unused)
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{
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unsigned i;
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uint64_t now = rte_rdtsc();
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for (i = 0; i < nb_pkts; i++)
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pkts[i]->udata64 = now;
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return nb_pkts;
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}
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static uint16_t
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calc_latency(uint16_t port __rte_unused, uint16_t qidx __rte_unused,
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struct rte_mbuf **pkts, uint16_t nb_pkts, void *_ __rte_unused)
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{
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uint64_t cycles = 0;
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uint64_t now = rte_rdtsc();
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unsigned i;
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for (i = 0; i < nb_pkts; i++)
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cycles += now - pkts[i]->udata64;
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latency_numbers.total_cycles += cycles;
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latency_numbers.total_pkts += nb_pkts;
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if (latency_numbers.total_pkts > (100 * 1000 * 1000ULL)) {
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printf("Latency = %"PRIu64" cycles\n",
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latency_numbers.total_cycles / latency_numbers.total_pkts);
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latency_numbers.total_cycles = latency_numbers.total_pkts = 0;
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}
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return nb_pkts;
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}
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/*
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* Initialises a given port using global settings and with the rx buffers
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* coming from the mbuf_pool passed as parameter
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*/
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static inline int
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port_init(uint16_t port, struct rte_mempool *mbuf_pool)
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{
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struct rte_eth_conf port_conf = port_conf_default;
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const uint16_t rx_rings = 1, tx_rings = 1;
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uint16_t nb_rxd = RX_RING_SIZE;
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uint16_t nb_txd = TX_RING_SIZE;
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int retval;
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uint16_t q;
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struct rte_eth_dev_info dev_info;
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struct rte_eth_txconf txconf;
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if (port >= rte_eth_dev_count())
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return -1;
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rte_eth_dev_info_get(port, &dev_info);
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if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
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port_conf.txmode.offloads |=
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DEV_TX_OFFLOAD_MBUF_FAST_FREE;
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retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
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if (retval != 0)
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return retval;
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retval = rte_eth_dev_adjust_nb_rx_tx_desc(port, &nb_rxd, &nb_txd);
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if (retval != 0)
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return retval;
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for (q = 0; q < rx_rings; q++) {
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retval = rte_eth_rx_queue_setup(port, q, nb_rxd,
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rte_eth_dev_socket_id(port), NULL, mbuf_pool);
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if (retval < 0)
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return retval;
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}
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txconf = dev_info.default_txconf;
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txconf.txq_flags = ETH_TXQ_FLAGS_IGNORE;
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txconf.offloads = port_conf.txmode.offloads;
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for (q = 0; q < tx_rings; q++) {
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retval = rte_eth_tx_queue_setup(port, q, nb_txd,
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rte_eth_dev_socket_id(port), &txconf);
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if (retval < 0)
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return retval;
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}
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retval = rte_eth_dev_start(port);
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if (retval < 0)
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return retval;
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struct ether_addr addr;
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rte_eth_macaddr_get(port, &addr);
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printf("Port %u MAC: %02"PRIx8" %02"PRIx8" %02"PRIx8
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" %02"PRIx8" %02"PRIx8" %02"PRIx8"\n",
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(unsigned)port,
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addr.addr_bytes[0], addr.addr_bytes[1],
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addr.addr_bytes[2], addr.addr_bytes[3],
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addr.addr_bytes[4], addr.addr_bytes[5]);
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rte_eth_promiscuous_enable(port);
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rte_eth_add_rx_callback(port, 0, add_timestamps, NULL);
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rte_eth_add_tx_callback(port, 0, calc_latency, NULL);
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return 0;
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}
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/*
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* Main thread that does the work, reading from INPUT_PORT
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* and writing to OUTPUT_PORT
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*/
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static __attribute__((noreturn)) void
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lcore_main(void)
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{
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uint16_t port;
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for (port = 0; port < nb_ports; port++)
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if (rte_eth_dev_socket_id(port) > 0 &&
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rte_eth_dev_socket_id(port) !=
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(int)rte_socket_id())
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printf("WARNING, port %u is on remote NUMA node to "
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"polling thread.\n\tPerformance will "
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"not be optimal.\n", port);
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printf("\nCore %u forwarding packets. [Ctrl+C to quit]\n",
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rte_lcore_id());
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for (;;) {
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for (port = 0; port < nb_ports; port++) {
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struct rte_mbuf *bufs[BURST_SIZE];
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const uint16_t nb_rx = rte_eth_rx_burst(port, 0,
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bufs, BURST_SIZE);
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if (unlikely(nb_rx == 0))
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continue;
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const uint16_t nb_tx = rte_eth_tx_burst(port ^ 1, 0,
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bufs, nb_rx);
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if (unlikely(nb_tx < nb_rx)) {
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uint16_t buf;
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for (buf = nb_tx; buf < nb_rx; buf++)
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rte_pktmbuf_free(bufs[buf]);
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}
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}
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}
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}
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/* Main function, does initialisation and calls the per-lcore functions */
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int
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main(int argc, char *argv[])
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{
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struct rte_mempool *mbuf_pool;
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uint16_t portid;
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/* init EAL */
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int ret = rte_eal_init(argc, argv);
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if (ret < 0)
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rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
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argc -= ret;
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argv += ret;
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nb_ports = rte_eth_dev_count();
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if (nb_ports < 2 || (nb_ports & 1))
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rte_exit(EXIT_FAILURE, "Error: number of ports must be even\n");
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mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL",
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NUM_MBUFS * nb_ports, MBUF_CACHE_SIZE, 0,
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RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
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if (mbuf_pool == NULL)
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rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
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/* initialize all ports */
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for (portid = 0; portid < nb_ports; portid++)
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if (port_init(portid, mbuf_pool) != 0)
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rte_exit(EXIT_FAILURE, "Cannot init port %"PRIu8"\n",
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portid);
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if (rte_lcore_count() > 1)
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printf("\nWARNING: Too much enabled lcores - "
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"App uses only 1 lcore\n");
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/* call lcore_main on master core only */
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lcore_main();
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return 0;
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}
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