X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=examples%2Frxtx_callbacks%2Fmain.c;h=07e95e8d1a96ab3755e20a3fa8e88b33e73470ad;hb=b1ea86a07cbce6d5b0a9b05a4e0c0fbbe56ad20d;hp=ca135d219d2f485a9c0634c2cc630e29dff6933e;hpb=47523597ff6c6ecf5e26e9bd149ab74cca5ec598;p=dpdk.git diff --git a/examples/rxtx_callbacks/main.c b/examples/rxtx_callbacks/main.c index ca135d219d..07e95e8d1a 100644 --- a/examples/rxtx_callbacks/main.c +++ b/examples/rxtx_callbacks/main.c @@ -1,62 +1,42 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2010-2015 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. +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2010-2015 Intel Corporation */ #include #include +#include #include #include #include #include #include -#define RX_RING_SIZE 128 -#define TX_RING_SIZE 512 +#define RX_RING_SIZE 1024 +#define TX_RING_SIZE 1024 #define NUM_MBUFS 8191 #define MBUF_CACHE_SIZE 250 #define BURST_SIZE 32 +static const char usage[] = + "%s EAL_ARGS -- [-t]\n"; + static const struct rte_eth_conf port_conf_default = { - .rxmode = { .max_rx_pkt_len = ETHER_MAX_LEN, }, + .rxmode = { + .max_rx_pkt_len = RTE_ETHER_MAX_LEN, + }, }; -static unsigned nb_ports; - static struct { uint64_t total_cycles; + uint64_t total_queue_cycles; uint64_t total_pkts; } latency_numbers; +int hw_timestamping; + +#define TICKS_PER_CYCLE_SHIFT 16 +static uint64_t ticks_per_cycle_mult; static uint16_t add_timestamps(uint16_t port __rte_unused, uint16_t qidx __rte_unused, @@ -72,22 +52,42 @@ add_timestamps(uint16_t port __rte_unused, uint16_t qidx __rte_unused, } static uint16_t -calc_latency(uint16_t port __rte_unused, uint16_t qidx __rte_unused, +calc_latency(uint16_t port, uint16_t qidx __rte_unused, struct rte_mbuf **pkts, uint16_t nb_pkts, void *_ __rte_unused) { uint64_t cycles = 0; + uint64_t queue_ticks = 0; uint64_t now = rte_rdtsc(); + uint64_t ticks; unsigned i; - for (i = 0; i < nb_pkts; i++) + if (hw_timestamping) + rte_eth_read_clock(port, &ticks); + + for (i = 0; i < nb_pkts; i++) { cycles += now - pkts[i]->udata64; + if (hw_timestamping) + queue_ticks += ticks - pkts[i]->timestamp; + } + latency_numbers.total_cycles += cycles; + if (hw_timestamping) + latency_numbers.total_queue_cycles += (queue_ticks + * ticks_per_cycle_mult) >> TICKS_PER_CYCLE_SHIFT; + latency_numbers.total_pkts += nb_pkts; if (latency_numbers.total_pkts > (100 * 1000 * 1000ULL)) { printf("Latency = %"PRIu64" cycles\n", latency_numbers.total_cycles / latency_numbers.total_pkts); - latency_numbers.total_cycles = latency_numbers.total_pkts = 0; + if (hw_timestamping) { + printf("Latency from HW = %"PRIu64" cycles\n", + latency_numbers.total_queue_cycles + / latency_numbers.total_pkts); + } + latency_numbers.total_cycles = 0; + latency_numbers.total_queue_cycles = 0; + latency_numbers.total_pkts = 0; } return nb_pkts; } @@ -105,10 +105,34 @@ port_init(uint16_t port, struct rte_mempool *mbuf_pool) uint16_t nb_txd = TX_RING_SIZE; int retval; uint16_t q; + struct rte_eth_dev_info dev_info; + struct rte_eth_rxconf rxconf; + struct rte_eth_txconf txconf; - if (port >= rte_eth_dev_count()) + if (!rte_eth_dev_is_valid_port(port)) return -1; + retval = rte_eth_dev_info_get(port, &dev_info); + if (retval != 0) { + printf("Error during getting device (port %u) info: %s\n", + port, strerror(-retval)); + + return retval; + } + + if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE) + port_conf.txmode.offloads |= + DEV_TX_OFFLOAD_MBUF_FAST_FREE; + + if (hw_timestamping) { + if (!(dev_info.rx_offload_capa & DEV_RX_OFFLOAD_TIMESTAMP)) { + printf("\nERROR: Port %u does not support hardware timestamping\n" + , port); + return -1; + } + port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_TIMESTAMP; + } + retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf); if (retval != 0) return retval; @@ -117,16 +141,20 @@ port_init(uint16_t port, struct rte_mempool *mbuf_pool) if (retval != 0) return retval; + rxconf = dev_info.default_rxconf; + for (q = 0; q < rx_rings; q++) { retval = rte_eth_rx_queue_setup(port, q, nb_rxd, - rte_eth_dev_socket_id(port), NULL, mbuf_pool); + rte_eth_dev_socket_id(port), &rxconf, mbuf_pool); if (retval < 0) return retval; } + txconf = dev_info.default_txconf; + txconf.offloads = port_conf.txmode.offloads; for (q = 0; q < tx_rings; q++) { retval = rte_eth_tx_queue_setup(port, q, nb_txd, - rte_eth_dev_socket_id(port), NULL); + rte_eth_dev_socket_id(port), &txconf); if (retval < 0) return retval; } @@ -135,9 +163,37 @@ port_init(uint16_t port, struct rte_mempool *mbuf_pool) if (retval < 0) return retval; - struct ether_addr addr; + if (hw_timestamping && ticks_per_cycle_mult == 0) { + uint64_t cycles_base = rte_rdtsc(); + uint64_t ticks_base; + retval = rte_eth_read_clock(port, &ticks_base); + if (retval != 0) + return retval; + rte_delay_ms(100); + uint64_t cycles = rte_rdtsc(); + uint64_t ticks; + rte_eth_read_clock(port, &ticks); + uint64_t c_freq = cycles - cycles_base; + uint64_t t_freq = ticks - ticks_base; + double freq_mult = (double)c_freq / t_freq; + printf("TSC Freq ~= %" PRIu64 + "\nHW Freq ~= %" PRIu64 + "\nRatio : %f\n", + c_freq * 10, t_freq * 10, freq_mult); + /* TSC will be faster than internal ticks so freq_mult is > 0 + * We convert the multiplication to an integer shift & mult + */ + ticks_per_cycle_mult = (1 << TICKS_PER_CYCLE_SHIFT) / freq_mult; + } + + struct rte_ether_addr addr; - rte_eth_macaddr_get(port, &addr); + retval = rte_eth_macaddr_get(port, &addr); + if (retval < 0) { + printf("Failed to get MAC address on port %u: %s\n", + port, rte_strerror(-retval)); + return retval; + } printf("Port %u MAC: %02"PRIx8" %02"PRIx8" %02"PRIx8 " %02"PRIx8" %02"PRIx8" %02"PRIx8"\n", (unsigned)port, @@ -145,7 +201,10 @@ port_init(uint16_t port, struct rte_mempool *mbuf_pool) addr.addr_bytes[2], addr.addr_bytes[3], addr.addr_bytes[4], addr.addr_bytes[5]); - rte_eth_promiscuous_enable(port); + retval = rte_eth_promiscuous_enable(port); + if (retval != 0) + return retval; + rte_eth_add_rx_callback(port, 0, add_timestamps, NULL); rte_eth_add_tx_callback(port, 0, calc_latency, NULL); @@ -161,7 +220,7 @@ lcore_main(void) { uint16_t port; - for (port = 0; port < nb_ports; port++) + RTE_ETH_FOREACH_DEV(port) if (rte_eth_dev_socket_id(port) > 0 && rte_eth_dev_socket_id(port) != (int)rte_socket_id()) @@ -172,7 +231,7 @@ lcore_main(void) printf("\nCore %u forwarding packets. [Ctrl+C to quit]\n", rte_lcore_id()); for (;;) { - for (port = 0; port < nb_ports; port++) { + RTE_ETH_FOREACH_DEV(port) { struct rte_mbuf *bufs[BURST_SIZE]; const uint16_t nb_rx = rte_eth_rx_burst(port, 0, bufs, BURST_SIZE); @@ -195,7 +254,13 @@ int main(int argc, char *argv[]) { struct rte_mempool *mbuf_pool; + uint16_t nb_ports; uint16_t portid; + struct option lgopts[] = { + { NULL, 0, 0, 0 } + }; + int opt, option_index; + /* init EAL */ int ret = rte_eal_init(argc, argv); @@ -205,7 +270,19 @@ main(int argc, char *argv[]) argc -= ret; argv += ret; - nb_ports = rte_eth_dev_count(); + while ((opt = getopt_long(argc, argv, "t", lgopts, &option_index)) + != EOF) + switch (opt) { + case 't': + hw_timestamping = 1; + break; + default: + printf(usage, argv[0]); + return -1; + } + optind = 1; /* reset getopt lib */ + + nb_ports = rte_eth_dev_count_avail(); if (nb_ports < 2 || (nb_ports & 1)) rte_exit(EXIT_FAILURE, "Error: number of ports must be even\n"); @@ -216,7 +293,7 @@ main(int argc, char *argv[]) rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n"); /* initialize all ports */ - for (portid = 0; portid < nb_ports; portid++) + RTE_ETH_FOREACH_DEV(portid) if (port_init(portid, mbuf_pool) != 0) rte_exit(EXIT_FAILURE, "Cannot init port %"PRIu8"\n", portid);