015f9489c4
All PCI functionality should be hidden from apps via the PCI bus driver, the EAL and individual device drivers. Therefore remove the inclusion of rte_pci.h from sample apps. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
315 lines
8.7 KiB
C
315 lines
8.7 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdint.h>
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#include <stdarg.h>
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#include <inttypes.h>
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#include <sys/queue.h>
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#include <errno.h>
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#include <netinet/ip.h>
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#include <rte_common.h>
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#include <rte_memory.h>
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#include <rte_eal.h>
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#include <rte_launch.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_atomic.h>
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#include <rte_ring.h>
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#include <rte_log.h>
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#include <rte_debug.h>
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#include <rte_mempool.h>
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#include <rte_memcpy.h>
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#include <rte_mbuf.h>
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#include <rte_ether.h>
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#include <rte_interrupts.h>
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#include <rte_ethdev.h>
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#include <rte_byteorder.h>
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#include <rte_malloc.h>
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#include <rte_string_fns.h>
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#include "common.h"
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#include "args.h"
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#include "init.h"
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/*
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* When doing reads from the NIC or the client queues,
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* use this batch size
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*/
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#define PACKET_READ_SIZE 32
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/*
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* Local buffers to put packets in, used to send packets in bursts to the
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* clients
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*/
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struct client_rx_buf {
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struct rte_mbuf *buffer[PACKET_READ_SIZE];
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uint16_t count;
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};
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/* One buffer per client rx queue - dynamically allocate array */
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static struct client_rx_buf *cl_rx_buf;
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static const char *
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get_printable_mac_addr(uint16_t port)
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{
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static const char err_address[] = "00:00:00:00:00:00";
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static char addresses[RTE_MAX_ETHPORTS][sizeof(err_address)];
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if (unlikely(port >= RTE_MAX_ETHPORTS))
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return err_address;
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if (unlikely(addresses[port][0]=='\0')){
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struct ether_addr mac;
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rte_eth_macaddr_get(port, &mac);
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snprintf(addresses[port], sizeof(addresses[port]),
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"%02x:%02x:%02x:%02x:%02x:%02x\n",
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mac.addr_bytes[0], mac.addr_bytes[1], mac.addr_bytes[2],
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mac.addr_bytes[3], mac.addr_bytes[4], mac.addr_bytes[5]);
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}
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return addresses[port];
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}
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/*
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* This function displays the recorded statistics for each port
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* and for each client. It uses ANSI terminal codes to clear
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* screen when called. It is called from a single non-master
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* thread in the server process, when the process is run with more
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* than one lcore enabled.
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*/
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static void
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do_stats_display(void)
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{
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unsigned i, j;
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const char clr[] = { 27, '[', '2', 'J', '\0' };
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const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
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uint64_t port_tx[RTE_MAX_ETHPORTS], port_tx_drop[RTE_MAX_ETHPORTS];
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uint64_t client_tx[MAX_CLIENTS], client_tx_drop[MAX_CLIENTS];
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/* to get TX stats, we need to do some summing calculations */
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memset(port_tx, 0, sizeof(port_tx));
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memset(port_tx_drop, 0, sizeof(port_tx_drop));
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memset(client_tx, 0, sizeof(client_tx));
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memset(client_tx_drop, 0, sizeof(client_tx_drop));
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for (i = 0; i < num_clients; i++){
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const volatile struct tx_stats *tx = &ports->tx_stats[i];
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for (j = 0; j < ports->num_ports; j++){
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/* assign to local variables here, save re-reading volatile vars */
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const uint64_t tx_val = tx->tx[ports->id[j]];
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const uint64_t drop_val = tx->tx_drop[ports->id[j]];
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port_tx[j] += tx_val;
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port_tx_drop[j] += drop_val;
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client_tx[i] += tx_val;
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client_tx_drop[i] += drop_val;
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}
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}
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/* Clear screen and move to top left */
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printf("%s%s", clr, topLeft);
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printf("PORTS\n");
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printf("-----\n");
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for (i = 0; i < ports->num_ports; i++)
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printf("Port %u: '%s'\t", (unsigned)ports->id[i],
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get_printable_mac_addr(ports->id[i]));
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printf("\n\n");
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for (i = 0; i < ports->num_ports; i++){
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printf("Port %u - rx: %9"PRIu64"\t"
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"tx: %9"PRIu64"\n",
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(unsigned)ports->id[i], ports->rx_stats.rx[i],
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port_tx[i]);
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}
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printf("\nCLIENTS\n");
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printf("-------\n");
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for (i = 0; i < num_clients; i++){
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const unsigned long long rx = clients[i].stats.rx;
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const unsigned long long rx_drop = clients[i].stats.rx_drop;
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printf("Client %2u - rx: %9llu, rx_drop: %9llu\n"
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" tx: %9"PRIu64", tx_drop: %9"PRIu64"\n",
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i, rx, rx_drop, client_tx[i], client_tx_drop[i]);
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}
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printf("\n");
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}
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/*
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* The function called from each non-master lcore used by the process.
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* The test_and_set function is used to randomly pick a single lcore on which
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* the code to display the statistics will run. Otherwise, the code just
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* repeatedly sleeps.
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*/
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static int
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sleep_lcore(__attribute__((unused)) void *dummy)
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{
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/* Used to pick a display thread - static, so zero-initialised */
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static rte_atomic32_t display_stats;
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/* Only one core should display stats */
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if (rte_atomic32_test_and_set(&display_stats)) {
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const unsigned sleeptime = 1;
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printf("Core %u displaying statistics\n", rte_lcore_id());
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/* Longer initial pause so above printf is seen */
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sleep(sleeptime * 3);
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/* Loop forever: sleep always returns 0 or <= param */
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while (sleep(sleeptime) <= sleeptime)
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do_stats_display();
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}
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return 0;
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}
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/*
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* Function to set all the client statistic values to zero.
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* Called at program startup.
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*/
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static void
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clear_stats(void)
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{
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unsigned i;
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for (i = 0; i < num_clients; i++)
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clients[i].stats.rx = clients[i].stats.rx_drop = 0;
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}
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/*
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* send a burst of traffic to a client, assuming there are packets
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* available to be sent to this client
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*/
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static void
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flush_rx_queue(uint16_t client)
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{
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uint16_t j;
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struct client *cl;
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if (cl_rx_buf[client].count == 0)
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return;
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cl = &clients[client];
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if (rte_ring_enqueue_bulk(cl->rx_q, (void **)cl_rx_buf[client].buffer,
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cl_rx_buf[client].count, NULL) == 0){
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for (j = 0; j < cl_rx_buf[client].count; j++)
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rte_pktmbuf_free(cl_rx_buf[client].buffer[j]);
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cl->stats.rx_drop += cl_rx_buf[client].count;
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}
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else
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cl->stats.rx += cl_rx_buf[client].count;
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cl_rx_buf[client].count = 0;
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}
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/*
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* marks a packet down to be sent to a particular client process
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*/
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static inline void
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enqueue_rx_packet(uint8_t client, struct rte_mbuf *buf)
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{
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cl_rx_buf[client].buffer[cl_rx_buf[client].count++] = buf;
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}
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/*
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* This function takes a group of packets and routes them
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* individually to the client process. Very simply round-robins the packets
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* without checking any of the packet contents.
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*/
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static void
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process_packets(uint32_t port_num __rte_unused,
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struct rte_mbuf *pkts[], uint16_t rx_count)
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{
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uint16_t i;
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uint8_t client = 0;
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for (i = 0; i < rx_count; i++) {
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enqueue_rx_packet(client, pkts[i]);
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if (++client == num_clients)
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client = 0;
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}
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for (i = 0; i < num_clients; i++)
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flush_rx_queue(i);
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}
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/*
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* Function called by the master lcore of the DPDK process.
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*/
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static void
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do_packet_forwarding(void)
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{
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unsigned port_num = 0; /* indexes the port[] array */
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for (;;) {
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struct rte_mbuf *buf[PACKET_READ_SIZE];
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uint16_t rx_count;
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/* read a port */
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rx_count = rte_eth_rx_burst(ports->id[port_num], 0, \
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buf, PACKET_READ_SIZE);
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ports->rx_stats.rx[port_num] += rx_count;
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/* Now process the NIC packets read */
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if (likely(rx_count > 0))
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process_packets(port_num, buf, rx_count);
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/* move to next port */
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if (++port_num == ports->num_ports)
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port_num = 0;
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}
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}
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int
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main(int argc, char *argv[])
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{
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/* initialise the system */
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if (init(argc, argv) < 0 )
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return -1;
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RTE_LOG(INFO, APP, "Finished Process Init.\n");
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cl_rx_buf = calloc(num_clients, sizeof(cl_rx_buf[0]));
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/* clear statistics */
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clear_stats();
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/* put all other cores to sleep bar master */
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rte_eal_mp_remote_launch(sleep_lcore, NULL, SKIP_MASTER);
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do_packet_forwarding();
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return 0;
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}
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