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-rw-r--r--src/seastar/dpdk/examples/distributor/Makefile57
-rw-r--r--src/seastar/dpdk/examples/distributor/main.c812
2 files changed, 869 insertions, 0 deletions
diff --git a/src/seastar/dpdk/examples/distributor/Makefile b/src/seastar/dpdk/examples/distributor/Makefile
new file mode 100644
index 00000000..6a5badaa
--- /dev/null
+++ b/src/seastar/dpdk/examples/distributor/Makefile
@@ -0,0 +1,57 @@
+# 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.
+
+ifeq ($(RTE_SDK),)
+$(error "Please define RTE_SDK environment variable")
+endif
+
+# Default target, can be overriden by command line or environment
+RTE_TARGET ?= x86_64-native-linuxapp-gcc
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+# binary name
+APP = distributor_app
+
+# all source are stored in SRCS-y
+SRCS-y := main.c
+
+CFLAGS += $(WERROR_FLAGS)
+
+# workaround for a gcc bug with noreturn attribute
+# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12603
+ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y)
+CFLAGS_main.o += -Wno-return-type
+endif
+
+EXTRA_CFLAGS += -O3 -Wfatal-errors
+
+include $(RTE_SDK)/mk/rte.extapp.mk
diff --git a/src/seastar/dpdk/examples/distributor/main.c b/src/seastar/dpdk/examples/distributor/main.c
new file mode 100644
index 00000000..8071f919
--- /dev/null
+++ b/src/seastar/dpdk/examples/distributor/main.c
@@ -0,0 +1,812 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2017 Intel Corporation. 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 <stdint.h>
+#include <inttypes.h>
+#include <unistd.h>
+#include <signal.h>
+#include <getopt.h>
+
+#include <rte_eal.h>
+#include <rte_ethdev.h>
+#include <rte_cycles.h>
+#include <rte_malloc.h>
+#include <rte_debug.h>
+#include <rte_prefetch.h>
+#include <rte_distributor.h>
+
+#define RX_RING_SIZE 512
+#define TX_RING_SIZE 512
+#define NUM_MBUFS ((64*1024)-1)
+#define MBUF_CACHE_SIZE 128
+#define BURST_SIZE 64
+#define SCHED_RX_RING_SZ 8192
+#define SCHED_TX_RING_SZ 65536
+#define BURST_SIZE_TX 32
+
+#define RTE_LOGTYPE_DISTRAPP RTE_LOGTYPE_USER1
+
+#define ANSI_COLOR_RED "\x1b[31m"
+#define ANSI_COLOR_RESET "\x1b[0m"
+
+/* mask of enabled ports */
+static uint32_t enabled_port_mask;
+volatile uint8_t quit_signal;
+volatile uint8_t quit_signal_rx;
+volatile uint8_t quit_signal_dist;
+volatile uint8_t quit_signal_work;
+
+static volatile struct app_stats {
+ struct {
+ uint64_t rx_pkts;
+ uint64_t returned_pkts;
+ uint64_t enqueued_pkts;
+ uint64_t enqdrop_pkts;
+ } rx __rte_cache_aligned;
+ int pad1 __rte_cache_aligned;
+
+ struct {
+ uint64_t in_pkts;
+ uint64_t ret_pkts;
+ uint64_t sent_pkts;
+ uint64_t enqdrop_pkts;
+ } dist __rte_cache_aligned;
+ int pad2 __rte_cache_aligned;
+
+ struct {
+ uint64_t dequeue_pkts;
+ uint64_t tx_pkts;
+ uint64_t enqdrop_pkts;
+ } tx __rte_cache_aligned;
+ int pad3 __rte_cache_aligned;
+
+ uint64_t worker_pkts[64] __rte_cache_aligned;
+
+ int pad4 __rte_cache_aligned;
+
+ uint64_t worker_bursts[64][8] __rte_cache_aligned;
+
+ int pad5 __rte_cache_aligned;
+
+ uint64_t port_rx_pkts[64] __rte_cache_aligned;
+ uint64_t port_tx_pkts[64] __rte_cache_aligned;
+} app_stats;
+
+struct app_stats prev_app_stats;
+
+static const struct rte_eth_conf port_conf_default = {
+ .rxmode = {
+ .mq_mode = ETH_MQ_RX_RSS,
+ .max_rx_pkt_len = ETHER_MAX_LEN,
+ },
+ .txmode = {
+ .mq_mode = ETH_MQ_TX_NONE,
+ },
+ .rx_adv_conf = {
+ .rss_conf = {
+ .rss_hf = ETH_RSS_IP | ETH_RSS_UDP |
+ ETH_RSS_TCP | ETH_RSS_SCTP,
+ }
+ },
+};
+
+struct output_buffer {
+ unsigned count;
+ struct rte_mbuf *mbufs[BURST_SIZE];
+};
+
+static void print_stats(void);
+
+/*
+ * Initialises a given port using global settings and with the rx buffers
+ * coming from the mbuf_pool passed as parameter
+ */
+static inline int
+port_init(uint8_t port, struct rte_mempool *mbuf_pool)
+{
+ struct rte_eth_conf port_conf = port_conf_default;
+ const uint16_t rxRings = 1, txRings = rte_lcore_count() - 1;
+ int retval;
+ uint16_t q;
+
+ if (port >= rte_eth_dev_count())
+ return -1;
+
+ retval = rte_eth_dev_configure(port, rxRings, txRings, &port_conf);
+ if (retval != 0)
+ return retval;
+
+ for (q = 0; q < rxRings; q++) {
+ retval = rte_eth_rx_queue_setup(port, q, RX_RING_SIZE,
+ rte_eth_dev_socket_id(port),
+ NULL, mbuf_pool);
+ if (retval < 0)
+ return retval;
+ }
+
+ for (q = 0; q < txRings; q++) {
+ retval = rte_eth_tx_queue_setup(port, q, TX_RING_SIZE,
+ rte_eth_dev_socket_id(port),
+ NULL);
+ if (retval < 0)
+ return retval;
+ }
+
+ retval = rte_eth_dev_start(port);
+ if (retval < 0)
+ return retval;
+
+ struct rte_eth_link link;
+ rte_eth_link_get_nowait(port, &link);
+ while (!link.link_status) {
+ printf("Waiting for Link up on port %"PRIu8"\n", port);
+ sleep(1);
+ rte_eth_link_get_nowait(port, &link);
+ }
+
+ if (!link.link_status) {
+ printf("Link down on port %"PRIu8"\n", port);
+ return 0;
+ }
+
+ struct ether_addr addr;
+ rte_eth_macaddr_get(port, &addr);
+ printf("Port %u MAC: %02"PRIx8" %02"PRIx8" %02"PRIx8
+ " %02"PRIx8" %02"PRIx8" %02"PRIx8"\n",
+ (unsigned)port,
+ addr.addr_bytes[0], addr.addr_bytes[1],
+ addr.addr_bytes[2], addr.addr_bytes[3],
+ addr.addr_bytes[4], addr.addr_bytes[5]);
+
+ rte_eth_promiscuous_enable(port);
+
+ return 0;
+}
+
+struct lcore_params {
+ unsigned worker_id;
+ struct rte_distributor *d;
+ struct rte_ring *rx_dist_ring;
+ struct rte_ring *dist_tx_ring;
+ struct rte_mempool *mem_pool;
+};
+
+static int
+lcore_rx(struct lcore_params *p)
+{
+ const uint8_t nb_ports = rte_eth_dev_count();
+ const int socket_id = rte_socket_id();
+ uint8_t port;
+ struct rte_mbuf *bufs[BURST_SIZE*2];
+
+ for (port = 0; port < nb_ports; port++) {
+ /* skip ports that are not enabled */
+ if ((enabled_port_mask & (1 << port)) == 0)
+ continue;
+
+ if (rte_eth_dev_socket_id(port) > 0 &&
+ rte_eth_dev_socket_id(port) != socket_id)
+ printf("WARNING, port %u is on remote NUMA node to "
+ "RX thread.\n\tPerformance will not "
+ "be optimal.\n", port);
+ }
+
+ printf("\nCore %u doing packet RX.\n", rte_lcore_id());
+ port = 0;
+ while (!quit_signal_rx) {
+
+ /* skip ports that are not enabled */
+ if ((enabled_port_mask & (1 << port)) == 0) {
+ if (++port == nb_ports)
+ port = 0;
+ continue;
+ }
+ const uint16_t nb_rx = rte_eth_rx_burst(port, 0, bufs,
+ BURST_SIZE);
+ if (unlikely(nb_rx == 0)) {
+ if (++port == nb_ports)
+ port = 0;
+ continue;
+ }
+ app_stats.rx.rx_pkts += nb_rx;
+
+/*
+ * You can run the distributor on the rx core with this code. Returned
+ * packets are then send straight to the tx core.
+ */
+#if 0
+ rte_distributor_process(d, bufs, nb_rx);
+ const uint16_t nb_ret = rte_distributor_returned_pktsd,
+ bufs, BURST_SIZE*2);
+
+ app_stats.rx.returned_pkts += nb_ret;
+ if (unlikely(nb_ret == 0)) {
+ if (++port == nb_ports)
+ port = 0;
+ continue;
+ }
+
+ struct rte_ring *tx_ring = p->dist_tx_ring;
+ uint16_t sent = rte_ring_enqueue_burst(tx_ring,
+ (void *)bufs, nb_ret, NULL);
+#else
+ uint16_t nb_ret = nb_rx;
+ /*
+ * Swap the following two lines if you want the rx traffic
+ * to go directly to tx, no distribution.
+ */
+ struct rte_ring *out_ring = p->rx_dist_ring;
+ /* struct rte_ring *out_ring = p->dist_tx_ring; */
+
+ uint16_t sent = rte_ring_enqueue_burst(out_ring,
+ (void *)bufs, nb_ret, NULL);
+#endif
+
+ app_stats.rx.enqueued_pkts += sent;
+ if (unlikely(sent < nb_ret)) {
+ app_stats.rx.enqdrop_pkts += nb_ret - sent;
+ RTE_LOG_DP(DEBUG, DISTRAPP,
+ "%s:Packet loss due to full ring\n", __func__);
+ while (sent < nb_ret)
+ rte_pktmbuf_free(bufs[sent++]);
+ }
+ if (++port == nb_ports)
+ port = 0;
+ }
+ /* set worker & tx threads quit flag */
+ printf("\nCore %u exiting rx task.\n", rte_lcore_id());
+ quit_signal = 1;
+ return 0;
+}
+
+static inline void
+flush_one_port(struct output_buffer *outbuf, uint8_t outp)
+{
+ unsigned int nb_tx = rte_eth_tx_burst(outp, 0,
+ outbuf->mbufs, outbuf->count);
+ app_stats.tx.tx_pkts += outbuf->count;
+
+ if (unlikely(nb_tx < outbuf->count)) {
+ app_stats.tx.enqdrop_pkts += outbuf->count - nb_tx;
+ do {
+ rte_pktmbuf_free(outbuf->mbufs[nb_tx]);
+ } while (++nb_tx < outbuf->count);
+ }
+ outbuf->count = 0;
+}
+
+static inline void
+flush_all_ports(struct output_buffer *tx_buffers, uint8_t nb_ports)
+{
+ uint8_t outp;
+
+ for (outp = 0; outp < nb_ports; outp++) {
+ /* skip ports that are not enabled */
+ if ((enabled_port_mask & (1 << outp)) == 0)
+ continue;
+
+ if (tx_buffers[outp].count == 0)
+ continue;
+
+ flush_one_port(&tx_buffers[outp], outp);
+ }
+}
+
+
+
+static int
+lcore_distributor(struct lcore_params *p)
+{
+ struct rte_ring *in_r = p->rx_dist_ring;
+ struct rte_ring *out_r = p->dist_tx_ring;
+ struct rte_mbuf *bufs[BURST_SIZE * 4];
+ struct rte_distributor *d = p->d;
+
+ printf("\nCore %u acting as distributor core.\n", rte_lcore_id());
+ while (!quit_signal_dist) {
+ const uint16_t nb_rx = rte_ring_dequeue_burst(in_r,
+ (void *)bufs, BURST_SIZE*1, NULL);
+ if (nb_rx) {
+ app_stats.dist.in_pkts += nb_rx;
+
+ /* Distribute the packets */
+ rte_distributor_process(d, bufs, nb_rx);
+ /* Handle Returns */
+ const uint16_t nb_ret =
+ rte_distributor_returned_pkts(d,
+ bufs, BURST_SIZE*2);
+
+ if (unlikely(nb_ret == 0))
+ continue;
+ app_stats.dist.ret_pkts += nb_ret;
+
+ uint16_t sent = rte_ring_enqueue_burst(out_r,
+ (void *)bufs, nb_ret, NULL);
+ app_stats.dist.sent_pkts += sent;
+ if (unlikely(sent < nb_ret)) {
+ app_stats.dist.enqdrop_pkts += nb_ret - sent;
+ RTE_LOG(DEBUG, DISTRAPP,
+ "%s:Packet loss due to full out ring\n",
+ __func__);
+ while (sent < nb_ret)
+ rte_pktmbuf_free(bufs[sent++]);
+ }
+ }
+ }
+ printf("\nCore %u exiting distributor task.\n", rte_lcore_id());
+ quit_signal_work = 1;
+
+ rte_distributor_flush(d);
+ /* Unblock any returns so workers can exit */
+ rte_distributor_clear_returns(d);
+ quit_signal_rx = 1;
+ return 0;
+}
+
+
+static int
+lcore_tx(struct rte_ring *in_r)
+{
+ static struct output_buffer tx_buffers[RTE_MAX_ETHPORTS];
+ const uint8_t nb_ports = rte_eth_dev_count();
+ const int socket_id = rte_socket_id();
+ uint8_t port;
+
+ for (port = 0; port < nb_ports; port++) {
+ /* skip ports that are not enabled */
+ if ((enabled_port_mask & (1 << port)) == 0)
+ continue;
+
+ if (rte_eth_dev_socket_id(port) > 0 &&
+ rte_eth_dev_socket_id(port) != socket_id)
+ printf("WARNING, port %u is on remote NUMA node to "
+ "TX thread.\n\tPerformance will not "
+ "be optimal.\n", port);
+ }
+
+ printf("\nCore %u doing packet TX.\n", rte_lcore_id());
+ while (!quit_signal) {
+
+ for (port = 0; port < nb_ports; port++) {
+ /* skip ports that are not enabled */
+ if ((enabled_port_mask & (1 << port)) == 0)
+ continue;
+
+ struct rte_mbuf *bufs[BURST_SIZE_TX];
+ const uint16_t nb_rx = rte_ring_dequeue_burst(in_r,
+ (void *)bufs, BURST_SIZE_TX, NULL);
+ app_stats.tx.dequeue_pkts += nb_rx;
+
+ /* if we get no traffic, flush anything we have */
+ if (unlikely(nb_rx == 0)) {
+ flush_all_ports(tx_buffers, nb_ports);
+ continue;
+ }
+
+ /* for traffic we receive, queue it up for transmit */
+ uint16_t i;
+ rte_prefetch_non_temporal((void *)bufs[0]);
+ rte_prefetch_non_temporal((void *)bufs[1]);
+ rte_prefetch_non_temporal((void *)bufs[2]);
+ for (i = 0; i < nb_rx; i++) {
+ struct output_buffer *outbuf;
+ uint8_t outp;
+ rte_prefetch_non_temporal((void *)bufs[i + 3]);
+ /*
+ * workers should update in_port to hold the
+ * output port value
+ */
+ outp = bufs[i]->port;
+ /* skip ports that are not enabled */
+ if ((enabled_port_mask & (1 << outp)) == 0)
+ continue;
+
+ outbuf = &tx_buffers[outp];
+ outbuf->mbufs[outbuf->count++] = bufs[i];
+ if (outbuf->count == BURST_SIZE_TX)
+ flush_one_port(outbuf, outp);
+ }
+ }
+ }
+ printf("\nCore %u exiting tx task.\n", rte_lcore_id());
+ return 0;
+}
+
+static void
+int_handler(int sig_num)
+{
+ printf("Exiting on signal %d\n", sig_num);
+ /* set quit flag for rx thread to exit */
+ quit_signal_dist = 1;
+}
+
+static void
+print_stats(void)
+{
+ struct rte_eth_stats eth_stats;
+ unsigned int i, j;
+ const unsigned int num_workers = rte_lcore_count() - 4;
+
+ for (i = 0; i < rte_eth_dev_count(); i++) {
+ rte_eth_stats_get(i, &eth_stats);
+ app_stats.port_rx_pkts[i] = eth_stats.ipackets;
+ app_stats.port_tx_pkts[i] = eth_stats.opackets;
+ }
+
+ printf("\n\nRX Thread:\n");
+ for (i = 0; i < rte_eth_dev_count(); i++) {
+ printf("Port %u Pktsin : %5.2f\n", i,
+ (app_stats.port_rx_pkts[i] -
+ prev_app_stats.port_rx_pkts[i])/1000000.0);
+ prev_app_stats.port_rx_pkts[i] = app_stats.port_rx_pkts[i];
+ }
+ printf(" - Received: %5.2f\n",
+ (app_stats.rx.rx_pkts -
+ prev_app_stats.rx.rx_pkts)/1000000.0);
+ printf(" - Returned: %5.2f\n",
+ (app_stats.rx.returned_pkts -
+ prev_app_stats.rx.returned_pkts)/1000000.0);
+ printf(" - Enqueued: %5.2f\n",
+ (app_stats.rx.enqueued_pkts -
+ prev_app_stats.rx.enqueued_pkts)/1000000.0);
+ printf(" - Dropped: %s%5.2f%s\n", ANSI_COLOR_RED,
+ (app_stats.rx.enqdrop_pkts -
+ prev_app_stats.rx.enqdrop_pkts)/1000000.0,
+ ANSI_COLOR_RESET);
+
+ printf("Distributor thread:\n");
+ printf(" - In: %5.2f\n",
+ (app_stats.dist.in_pkts -
+ prev_app_stats.dist.in_pkts)/1000000.0);
+ printf(" - Returned: %5.2f\n",
+ (app_stats.dist.ret_pkts -
+ prev_app_stats.dist.ret_pkts)/1000000.0);
+ printf(" - Sent: %5.2f\n",
+ (app_stats.dist.sent_pkts -
+ prev_app_stats.dist.sent_pkts)/1000000.0);
+ printf(" - Dropped %s%5.2f%s\n", ANSI_COLOR_RED,
+ (app_stats.dist.enqdrop_pkts -
+ prev_app_stats.dist.enqdrop_pkts)/1000000.0,
+ ANSI_COLOR_RESET);
+
+ printf("TX thread:\n");
+ printf(" - Dequeued: %5.2f\n",
+ (app_stats.tx.dequeue_pkts -
+ prev_app_stats.tx.dequeue_pkts)/1000000.0);
+ for (i = 0; i < rte_eth_dev_count(); i++) {
+ printf("Port %u Pktsout: %5.2f\n",
+ i, (app_stats.port_tx_pkts[i] -
+ prev_app_stats.port_tx_pkts[i])/1000000.0);
+ prev_app_stats.port_tx_pkts[i] = app_stats.port_tx_pkts[i];
+ }
+ printf(" - Transmitted: %5.2f\n",
+ (app_stats.tx.tx_pkts -
+ prev_app_stats.tx.tx_pkts)/1000000.0);
+ printf(" - Dropped: %s%5.2f%s\n", ANSI_COLOR_RED,
+ (app_stats.tx.enqdrop_pkts -
+ prev_app_stats.tx.enqdrop_pkts)/1000000.0,
+ ANSI_COLOR_RESET);
+
+ prev_app_stats.rx.rx_pkts = app_stats.rx.rx_pkts;
+ prev_app_stats.rx.returned_pkts = app_stats.rx.returned_pkts;
+ prev_app_stats.rx.enqueued_pkts = app_stats.rx.enqueued_pkts;
+ prev_app_stats.rx.enqdrop_pkts = app_stats.rx.enqdrop_pkts;
+ prev_app_stats.dist.in_pkts = app_stats.dist.in_pkts;
+ prev_app_stats.dist.ret_pkts = app_stats.dist.ret_pkts;
+ prev_app_stats.dist.sent_pkts = app_stats.dist.sent_pkts;
+ prev_app_stats.dist.enqdrop_pkts = app_stats.dist.enqdrop_pkts;
+ prev_app_stats.tx.dequeue_pkts = app_stats.tx.dequeue_pkts;
+ prev_app_stats.tx.tx_pkts = app_stats.tx.tx_pkts;
+ prev_app_stats.tx.enqdrop_pkts = app_stats.tx.enqdrop_pkts;
+
+ for (i = 0; i < num_workers; i++) {
+ printf("Worker %02u Pkts: %5.2f. Bursts(1-8): ", i,
+ (app_stats.worker_pkts[i] -
+ prev_app_stats.worker_pkts[i])/1000000.0);
+ for (j = 0; j < 8; j++) {
+ printf("%"PRIu64" ", app_stats.worker_bursts[i][j]);
+ app_stats.worker_bursts[i][j] = 0;
+ }
+ printf("\n");
+ prev_app_stats.worker_pkts[i] = app_stats.worker_pkts[i];
+ }
+}
+
+static int
+lcore_worker(struct lcore_params *p)
+{
+ struct rte_distributor *d = p->d;
+ const unsigned id = p->worker_id;
+ unsigned int num = 0;
+ unsigned int i;
+
+ /*
+ * for single port, xor_val will be zero so we won't modify the output
+ * port, otherwise we send traffic from 0 to 1, 2 to 3, and vice versa
+ */
+ const unsigned xor_val = (rte_eth_dev_count() > 1);
+ struct rte_mbuf *buf[8] __rte_cache_aligned;
+
+ for (i = 0; i < 8; i++)
+ buf[i] = NULL;
+
+ app_stats.worker_pkts[p->worker_id] = 1;
+
+ printf("\nCore %u acting as worker core.\n", rte_lcore_id());
+ while (!quit_signal_work) {
+ num = rte_distributor_get_pkt(d, id, buf, buf, num);
+ /* Do a little bit of work for each packet */
+ for (i = 0; i < num; i++) {
+ uint64_t t = rte_rdtsc()+100;
+
+ while (rte_rdtsc() < t)
+ rte_pause();
+ buf[i]->port ^= xor_val;
+ }
+
+ app_stats.worker_pkts[p->worker_id] += num;
+ if (num > 0)
+ app_stats.worker_bursts[p->worker_id][num-1]++;
+ }
+ return 0;
+}
+
+/* display usage */
+static void
+print_usage(const char *prgname)
+{
+ printf("%s [EAL options] -- -p PORTMASK\n"
+ " -p PORTMASK: hexadecimal bitmask of ports to configure\n",
+ prgname);
+}
+
+static int
+parse_portmask(const char *portmask)
+{
+ char *end = NULL;
+ unsigned long pm;
+
+ /* parse hexadecimal string */
+ pm = strtoul(portmask, &end, 16);
+ if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return -1;
+
+ if (pm == 0)
+ return -1;
+
+ return pm;
+}
+
+/* Parse the argument given in the command line of the application */
+static int
+parse_args(int argc, char **argv)
+{
+ int opt;
+ char **argvopt;
+ int option_index;
+ char *prgname = argv[0];
+ static struct option lgopts[] = {
+ {NULL, 0, 0, 0}
+ };
+
+ argvopt = argv;
+
+ while ((opt = getopt_long(argc, argvopt, "p:",
+ lgopts, &option_index)) != EOF) {
+
+ switch (opt) {
+ /* portmask */
+ case 'p':
+ enabled_port_mask = parse_portmask(optarg);
+ if (enabled_port_mask == 0) {
+ printf("invalid portmask\n");
+ print_usage(prgname);
+ return -1;
+ }
+ break;
+
+ default:
+ print_usage(prgname);
+ return -1;
+ }
+ }
+
+ if (optind <= 1) {
+ print_usage(prgname);
+ return -1;
+ }
+
+ argv[optind-1] = prgname;
+
+ optind = 1; /* reset getopt lib */
+ return 0;
+}
+
+/* Main function, does initialization and calls the per-lcore functions */
+int
+main(int argc, char *argv[])
+{
+ struct rte_mempool *mbuf_pool;
+ struct rte_distributor *d;
+ struct rte_ring *dist_tx_ring;
+ struct rte_ring *rx_dist_ring;
+ unsigned lcore_id, worker_id = 0;
+ unsigned nb_ports;
+ uint8_t portid;
+ uint8_t nb_ports_available;
+ uint64_t t, freq;
+
+ /* catch ctrl-c so we can print on exit */
+ signal(SIGINT, int_handler);
+
+ /* init EAL */
+ int ret = rte_eal_init(argc, argv);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
+ argc -= ret;
+ argv += ret;
+
+ /* parse application arguments (after the EAL ones) */
+ ret = parse_args(argc, argv);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Invalid distributor parameters\n");
+
+ if (rte_lcore_count() < 5)
+ rte_exit(EXIT_FAILURE, "Error, This application needs at "
+ "least 5 logical cores to run:\n"
+ "1 lcore for stats (can be core 0)\n"
+ "1 lcore for packet RX\n"
+ "1 lcore for distribution\n"
+ "1 lcore for packet TX\n"
+ "and at least 1 lcore for worker threads\n");
+
+ nb_ports = rte_eth_dev_count();
+ if (nb_ports == 0)
+ rte_exit(EXIT_FAILURE, "Error: no ethernet ports detected\n");
+ if (nb_ports != 1 && (nb_ports & 1))
+ rte_exit(EXIT_FAILURE, "Error: number of ports must be even, except "
+ "when using a single port\n");
+
+ mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL",
+ NUM_MBUFS * nb_ports, MBUF_CACHE_SIZE, 0,
+ RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
+ if (mbuf_pool == NULL)
+ rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
+ nb_ports_available = nb_ports;
+
+ /* initialize all ports */
+ for (portid = 0; portid < nb_ports; portid++) {
+ /* skip ports that are not enabled */
+ if ((enabled_port_mask & (1 << portid)) == 0) {
+ printf("\nSkipping disabled port %d\n", portid);
+ nb_ports_available--;
+ continue;
+ }
+ /* init port */
+ printf("Initializing port %u... done\n", (unsigned) portid);
+
+ if (port_init(portid, mbuf_pool) != 0)
+ rte_exit(EXIT_FAILURE, "Cannot initialize port %"PRIu8"\n",
+ portid);
+ }
+
+ if (!nb_ports_available) {
+ rte_exit(EXIT_FAILURE,
+ "All available ports are disabled. Please set portmask.\n");
+ }
+
+ d = rte_distributor_create("PKT_DIST", rte_socket_id(),
+ rte_lcore_count() - 4,
+ RTE_DIST_ALG_BURST);
+ if (d == NULL)
+ rte_exit(EXIT_FAILURE, "Cannot create distributor\n");
+
+ /*
+ * scheduler ring is read by the transmitter core, and written to
+ * by scheduler core
+ */
+ dist_tx_ring = rte_ring_create("Output_ring", SCHED_TX_RING_SZ,
+ rte_socket_id(), RING_F_SC_DEQ | RING_F_SP_ENQ);
+ if (dist_tx_ring == NULL)
+ rte_exit(EXIT_FAILURE, "Cannot create output ring\n");
+
+ rx_dist_ring = rte_ring_create("Input_ring", SCHED_RX_RING_SZ,
+ rte_socket_id(), RING_F_SC_DEQ | RING_F_SP_ENQ);
+ if (rx_dist_ring == NULL)
+ rte_exit(EXIT_FAILURE, "Cannot create output ring\n");
+
+ RTE_LCORE_FOREACH_SLAVE(lcore_id) {
+ if (worker_id == rte_lcore_count() - 3) {
+ printf("Starting distributor on lcore_id %d\n",
+ lcore_id);
+ /* distributor core */
+ struct lcore_params *p =
+ rte_malloc(NULL, sizeof(*p), 0);
+ if (!p)
+ rte_panic("malloc failure\n");
+ *p = (struct lcore_params){worker_id, d,
+ rx_dist_ring, dist_tx_ring, mbuf_pool};
+ rte_eal_remote_launch(
+ (lcore_function_t *)lcore_distributor,
+ p, lcore_id);
+ } else if (worker_id == rte_lcore_count() - 4) {
+ printf("Starting tx on worker_id %d, lcore_id %d\n",
+ worker_id, lcore_id);
+ /* tx core */
+ rte_eal_remote_launch((lcore_function_t *)lcore_tx,
+ dist_tx_ring, lcore_id);
+ } else if (worker_id == rte_lcore_count() - 2) {
+ printf("Starting rx on worker_id %d, lcore_id %d\n",
+ worker_id, lcore_id);
+ /* rx core */
+ struct lcore_params *p =
+ rte_malloc(NULL, sizeof(*p), 0);
+ if (!p)
+ rte_panic("malloc failure\n");
+ *p = (struct lcore_params){worker_id, d, rx_dist_ring,
+ dist_tx_ring, mbuf_pool};
+ rte_eal_remote_launch((lcore_function_t *)lcore_rx,
+ p, lcore_id);
+ } else {
+ printf("Starting worker on worker_id %d, lcore_id %d\n",
+ worker_id, lcore_id);
+ struct lcore_params *p =
+ rte_malloc(NULL, sizeof(*p), 0);
+ if (!p)
+ rte_panic("malloc failure\n");
+ *p = (struct lcore_params){worker_id, d, rx_dist_ring,
+ dist_tx_ring, mbuf_pool};
+
+ rte_eal_remote_launch((lcore_function_t *)lcore_worker,
+ p, lcore_id);
+ }
+ worker_id++;
+ }
+
+ freq = rte_get_timer_hz();
+ t = rte_rdtsc() + freq;
+ while (!quit_signal_dist) {
+ if (t < rte_rdtsc()) {
+ print_stats();
+ t = rte_rdtsc() + freq;
+ }
+ usleep(1000);
+ }
+
+ RTE_LCORE_FOREACH_SLAVE(lcore_id) {
+ if (rte_eal_wait_lcore(lcore_id) < 0)
+ return -1;
+ }
+
+ print_stats();
+ return 0;
+}