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-rw-r--r--src/seastar/dpdk/examples/server_node_efd/server/Makefile57
-rw-r--r--src/seastar/dpdk/examples/server_node_efd/server/args.c200
-rw-r--r--src/seastar/dpdk/examples/server_node_efd/server/args.h39
-rw-r--r--src/seastar/dpdk/examples/server_node_efd/server/init.c371
-rw-r--r--src/seastar/dpdk/examples/server_node_efd/server/init.h76
-rw-r--r--src/seastar/dpdk/examples/server_node_efd/server/main.c362
6 files changed, 1105 insertions, 0 deletions
diff --git a/src/seastar/dpdk/examples/server_node_efd/server/Makefile b/src/seastar/dpdk/examples/server_node_efd/server/Makefile
new file mode 100644
index 00000000..a2f2f361
--- /dev/null
+++ b/src/seastar/dpdk/examples/server_node_efd/server/Makefile
@@ -0,0 +1,57 @@
+# BSD LICENSE
+#
+# Copyright(c) 2016-2017 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 overridden by command line or environment
+RTE_TARGET ?= x86_64-native-linuxapp-gcc
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+ifneq ($(CONFIG_RTE_EXEC_ENV), "linuxapp")
+$(error This application can only operate in a linuxapp environment, \
+please change the definition of the RTE_TARGET environment variable)
+endif
+
+# binary name
+APP = server
+
+# all source are stored in SRCS-y
+SRCS-y := main.c init.c args.c
+
+INC := $(wildcard *.h)
+
+CFLAGS += $(WERROR_FLAGS) -O3
+CFLAGS += -I$(SRCDIR)/../shared
+
+include $(RTE_SDK)/mk/rte.extapp.mk
diff --git a/src/seastar/dpdk/examples/server_node_efd/server/args.c b/src/seastar/dpdk/examples/server_node_efd/server/args.c
new file mode 100644
index 00000000..ee292038
--- /dev/null
+++ b/src/seastar/dpdk/examples/server_node_efd/server/args.c
@@ -0,0 +1,200 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2016-2017 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.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <getopt.h>
+#include <stdarg.h>
+#include <errno.h>
+
+#include <rte_memory.h>
+#include <rte_string_fns.h>
+
+#include "common.h"
+#include "args.h"
+#include "init.h"
+
+/* 1M flows by default */
+#define DEFAULT_NUM_FLOWS 0x100000
+
+/* global var for number of nodes - extern in header */
+uint8_t num_nodes;
+/* global var for number of flows - extern in header */
+uint32_t num_flows = DEFAULT_NUM_FLOWS;
+
+static const char *progname;
+
+/**
+ * Prints out usage information to stdout
+ */
+static void
+usage(void)
+{
+ printf("%s [EAL options] -- -p PORTMASK -n NUM_NODES -f NUM_FLOWS\n"
+ " -p PORTMASK: hexadecimal bitmask of ports to use\n"
+ " -n NUM_NODES: number of node processes to use\n"
+ " -f NUM_FLOWS: number of flows to be added in the EFD table\n",
+ progname);
+}
+
+/**
+ * The ports to be used by the application are passed in
+ * the form of a bitmask. This function parses the bitmask
+ * and places the port numbers to be used into the port[]
+ * array variable
+ */
+static int
+parse_portmask(uint8_t max_ports, const char *portmask)
+{
+ char *end = NULL;
+ unsigned long pm;
+ uint8_t count = 0;
+
+ if (portmask == NULL || *portmask == '\0')
+ return -1;
+
+ /* convert parameter to a number and verify */
+ pm = strtoul(portmask, &end, 16);
+ if (end == NULL || *end != '\0' || pm == 0)
+ return -1;
+
+ /* loop through bits of the mask and mark ports */
+ while (pm != 0) {
+ if (pm & 0x01) { /* bit is set in mask, use port */
+ if (count >= max_ports)
+ printf("WARNING: requested port %u not present"
+ " - ignoring\n", (unsigned int)count);
+ else
+ info->id[info->num_ports++] = count;
+ }
+ pm = (pm >> 1);
+ count++;
+ }
+
+ return 0;
+}
+
+/**
+ * Take the number of nodes parameter passed to the app
+ * and convert to a number to store in the num_nodes variable
+ */
+static int
+parse_num_nodes(const char *nodes)
+{
+ char *end = NULL;
+ unsigned long temp;
+
+ if (nodes == NULL || *nodes == '\0')
+ return -1;
+
+ temp = strtoul(nodes, &end, 10);
+ if (end == NULL || *end != '\0' || temp == 0)
+ return -1;
+
+ num_nodes = (uint8_t)temp;
+ return 0;
+}
+
+static int
+parse_num_flows(const char *flows)
+{
+ char *end = NULL;
+
+ /* parse hexadecimal string */
+ num_flows = strtoul(flows, &end, 16);
+ if ((flows[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return -1;
+
+ if (num_flows == 0)
+ return -1;
+
+ return 0;
+}
+
+/**
+ * The application specific arguments follow the DPDK-specific
+ * arguments which are stripped by the DPDK init. This function
+ * processes these application arguments, printing usage info
+ * on error.
+ */
+int
+parse_app_args(uint8_t max_ports, int argc, char *argv[])
+{
+ int option_index, opt;
+ char **argvopt = argv;
+ static struct option lgopts[] = { /* no long options */
+ {NULL, 0, 0, 0 }
+ };
+ progname = argv[0];
+
+ while ((opt = getopt_long(argc, argvopt, "n:f:p:", lgopts,
+ &option_index)) != EOF) {
+ switch (opt) {
+ case 'p':
+ if (parse_portmask(max_ports, optarg) != 0) {
+ usage();
+ return -1;
+ }
+ break;
+ case 'n':
+ if (parse_num_nodes(optarg) != 0) {
+ usage();
+ return -1;
+ }
+ break;
+ case 'f':
+ if (parse_num_flows(optarg) != 0) {
+ usage();
+ return -1;
+ }
+ break;
+ default:
+ printf("ERROR: Unknown option '%c'\n", opt);
+ usage();
+ return -1;
+ }
+ }
+
+ if (info->num_ports == 0 || num_nodes == 0) {
+ usage();
+ return -1;
+ }
+
+ if (info->num_ports % 2 != 0) {
+ printf("ERROR: application requires an even "
+ "number of ports to use\n");
+ return -1;
+ }
+ return 0;
+}
diff --git a/src/seastar/dpdk/examples/server_node_efd/server/args.h b/src/seastar/dpdk/examples/server_node_efd/server/args.h
new file mode 100644
index 00000000..cacf3957
--- /dev/null
+++ b/src/seastar/dpdk/examples/server_node_efd/server/args.h
@@ -0,0 +1,39 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2016-2017 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.
+ */
+
+#ifndef _ARGS_H_
+#define _ARGS_H_
+
+int parse_app_args(uint8_t max_ports, int argc, char *argv[]);
+
+#endif /* ifndef _ARGS_H_ */
diff --git a/src/seastar/dpdk/examples/server_node_efd/server/init.c b/src/seastar/dpdk/examples/server_node_efd/server/init.c
new file mode 100644
index 00000000..82457b44
--- /dev/null
+++ b/src/seastar/dpdk/examples/server_node_efd/server/init.c
@@ -0,0 +1,371 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2016-2017 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.
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/queue.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <inttypes.h>
+
+#include <rte_common.h>
+#include <rte_memory.h>
+#include <rte_memzone.h>
+#include <rte_eal.h>
+#include <rte_byteorder.h>
+#include <rte_atomic.h>
+#include <rte_launch.h>
+#include <rte_per_lcore.h>
+#include <rte_lcore.h>
+#include <rte_branch_prediction.h>
+#include <rte_debug.h>
+#include <rte_ring.h>
+#include <rte_log.h>
+#include <rte_mempool.h>
+#include <rte_memcpy.h>
+#include <rte_mbuf.h>
+#include <rte_interrupts.h>
+#include <rte_pci.h>
+#include <rte_ether.h>
+#include <rte_ethdev.h>
+#include <rte_malloc.h>
+#include <rte_string_fns.h>
+#include <rte_cycles.h>
+#include <rte_efd.h>
+#include <rte_hash.h>
+
+#include "common.h"
+#include "args.h"
+#include "init.h"
+
+#define MBUFS_PER_NODE 1536
+#define MBUFS_PER_PORT 1536
+#define MBUF_CACHE_SIZE 512
+
+#define RTE_MP_RX_DESC_DEFAULT 512
+#define RTE_MP_TX_DESC_DEFAULT 512
+#define NODE_QUEUE_RINGSIZE 128
+
+#define NO_FLAGS 0
+
+/* The mbuf pool for packet rx */
+struct rte_mempool *pktmbuf_pool;
+
+/* array of info/queues for nodes */
+struct node *nodes;
+
+/* EFD table */
+struct rte_efd_table *efd_table;
+
+/* Shared info between server and nodes */
+struct shared_info *info;
+
+/**
+ * Initialise the mbuf pool for packet reception for the NIC, and any other
+ * buffer pools needed by the app - currently none.
+ */
+static int
+init_mbuf_pools(void)
+{
+ const unsigned int num_mbufs = (num_nodes * MBUFS_PER_NODE) +
+ (info->num_ports * MBUFS_PER_PORT);
+
+ /*
+ * Don't pass single-producer/single-consumer flags to mbuf create as it
+ * seems faster to use a cache instead
+ */
+ printf("Creating mbuf pool '%s' [%u mbufs] ...\n",
+ PKTMBUF_POOL_NAME, num_mbufs);
+ pktmbuf_pool = rte_pktmbuf_pool_create(PKTMBUF_POOL_NAME, num_mbufs,
+ MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
+
+ return pktmbuf_pool == NULL; /* 0 on success */
+}
+
+/**
+ * Initialise an individual port:
+ * - configure number of rx and tx rings
+ * - set up each rx ring, to pull from the main mbuf pool
+ * - set up each tx ring
+ * - start the port and report its status to stdout
+ */
+static int
+init_port(uint8_t port_num)
+{
+ /* for port configuration all features are off by default */
+ const struct rte_eth_conf port_conf = {
+ .rxmode = {
+ .mq_mode = ETH_MQ_RX_RSS
+ }
+ };
+ const uint16_t rx_rings = 1, tx_rings = num_nodes;
+ const uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT;
+ const uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT;
+
+ uint16_t q;
+ int retval;
+
+ printf("Port %u init ... ", (unsigned int)port_num);
+ fflush(stdout);
+
+ /*
+ * Standard DPDK port initialisation - config port, then set up
+ * rx and tx rings.
+ */
+ retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings, &port_conf);
+ if (retval != 0)
+ return retval;
+
+ for (q = 0; q < rx_rings; q++) {
+ retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size,
+ rte_eth_dev_socket_id(port_num),
+ NULL, pktmbuf_pool);
+ if (retval < 0)
+ return retval;
+ }
+
+ for (q = 0; q < tx_rings; q++) {
+ retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size,
+ rte_eth_dev_socket_id(port_num),
+ NULL);
+ if (retval < 0)
+ return retval;
+ }
+
+ rte_eth_promiscuous_enable(port_num);
+
+ retval = rte_eth_dev_start(port_num);
+ if (retval < 0)
+ return retval;
+
+ printf("done:\n");
+
+ return 0;
+}
+
+/**
+ * Set up the DPDK rings which will be used to pass packets, via
+ * pointers, between the multi-process server and node processes.
+ * Each node needs one RX queue.
+ */
+static int
+init_shm_rings(void)
+{
+ unsigned int i;
+ unsigned int socket_id;
+ const char *q_name;
+ const unsigned int ringsize = NODE_QUEUE_RINGSIZE;
+
+ nodes = rte_malloc("node details",
+ sizeof(*nodes) * num_nodes, 0);
+ if (nodes == NULL)
+ rte_exit(EXIT_FAILURE, "Cannot allocate memory for "
+ "node program details\n");
+
+ for (i = 0; i < num_nodes; i++) {
+ /* Create an RX queue for each node */
+ socket_id = rte_socket_id();
+ q_name = get_rx_queue_name(i);
+ nodes[i].rx_q = rte_ring_create(q_name,
+ ringsize, socket_id,
+ RING_F_SP_ENQ | RING_F_SC_DEQ);
+ if (nodes[i].rx_q == NULL)
+ rte_exit(EXIT_FAILURE, "Cannot create rx ring queue "
+ "for node %u\n", i);
+ }
+ return 0;
+}
+
+/*
+ * Create EFD table which will contain all the flows
+ * that will be distributed among the nodes
+ */
+static void
+create_efd_table(void)
+{
+ uint8_t socket_id = rte_socket_id();
+
+ /* create table */
+ efd_table = rte_efd_create("flow table", num_flows * 2, sizeof(uint32_t),
+ 1 << socket_id, socket_id);
+
+ if (efd_table == NULL)
+ rte_exit(EXIT_FAILURE, "Problem creating the flow table\n");
+}
+
+static void
+populate_efd_table(void)
+{
+ unsigned int i;
+ int32_t ret;
+ uint32_t ip_dst;
+ uint8_t socket_id = rte_socket_id();
+ uint64_t node_id;
+
+ /* Add flows in table */
+ for (i = 0; i < num_flows; i++) {
+ node_id = i % num_nodes;
+
+ ip_dst = rte_cpu_to_be_32(i);
+ ret = rte_efd_update(efd_table, socket_id,
+ (void *)&ip_dst, (efd_value_t)node_id);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Unable to add entry %u in "
+ "EFD table\n", i);
+ }
+
+ printf("EFD table: Adding 0x%x keys\n", num_flows);
+}
+
+/* Check the link status of all ports in up to 9s, and print them finally */
+static void
+check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
+{
+#define CHECK_INTERVAL 100 /* 100ms */
+#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
+ uint8_t portid, count, all_ports_up, print_flag = 0;
+ struct rte_eth_link link;
+
+ printf("\nChecking link status");
+ fflush(stdout);
+ for (count = 0; count <= MAX_CHECK_TIME; count++) {
+ all_ports_up = 1;
+ for (portid = 0; portid < port_num; portid++) {
+ if ((port_mask & (1 << info->id[portid])) == 0)
+ continue;
+ memset(&link, 0, sizeof(link));
+ rte_eth_link_get_nowait(info->id[portid], &link);
+ /* print link status if flag set */
+ if (print_flag == 1) {
+ if (link.link_status)
+ printf("Port %d Link Up - speed %u "
+ "Mbps - %s\n", info->id[portid],
+ (unsigned int)link.link_speed,
+ (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
+ ("full-duplex") : ("half-duplex\n"));
+ else
+ printf("Port %d Link Down\n",
+ (uint8_t)info->id[portid]);
+ continue;
+ }
+ /* clear all_ports_up flag if any link down */
+ if (link.link_status == ETH_LINK_DOWN) {
+ all_ports_up = 0;
+ break;
+ }
+ }
+ /* after finally printing all link status, get out */
+ if (print_flag == 1)
+ break;
+
+ if (all_ports_up == 0) {
+ printf(".");
+ fflush(stdout);
+ rte_delay_ms(CHECK_INTERVAL);
+ }
+
+ /* set the print_flag if all ports up or timeout */
+ if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
+ print_flag = 1;
+ printf("done\n");
+ }
+ }
+}
+
+/**
+ * Main init function for the multi-process server app,
+ * calls subfunctions to do each stage of the initialisation.
+ */
+int
+init(int argc, char *argv[])
+{
+ int retval;
+ const struct rte_memzone *mz;
+ uint8_t i, total_ports;
+
+ /* init EAL, parsing EAL args */
+ retval = rte_eal_init(argc, argv);
+ if (retval < 0)
+ return -1;
+ argc -= retval;
+ argv += retval;
+
+ /* get total number of ports */
+ total_ports = rte_eth_dev_count();
+
+ /* set up array for port data */
+ mz = rte_memzone_reserve(MZ_SHARED_INFO, sizeof(*info),
+ rte_socket_id(), NO_FLAGS);
+ if (mz == NULL)
+ rte_exit(EXIT_FAILURE, "Cannot reserve memory zone "
+ "for port information\n");
+ memset(mz->addr, 0, sizeof(*info));
+ info = mz->addr;
+
+ /* parse additional, application arguments */
+ retval = parse_app_args(total_ports, argc, argv);
+ if (retval != 0)
+ return -1;
+
+ /* initialise mbuf pools */
+ retval = init_mbuf_pools();
+ if (retval != 0)
+ rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n");
+
+ /* now initialise the ports we will use */
+ for (i = 0; i < info->num_ports; i++) {
+ retval = init_port(info->id[i]);
+ if (retval != 0)
+ rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n",
+ (unsigned int) i);
+ }
+
+ check_all_ports_link_status(info->num_ports, (~0x0));
+
+ /* initialise the node queues/rings for inter-eu comms */
+ init_shm_rings();
+
+ /* Create the EFD table */
+ create_efd_table();
+
+ /* Populate the EFD table */
+ populate_efd_table();
+
+ /* Share the total number of nodes */
+ info->num_nodes = num_nodes;
+
+ /* Share the total number of flows */
+ info->num_flows = num_flows;
+ return 0;
+}
diff --git a/src/seastar/dpdk/examples/server_node_efd/server/init.h b/src/seastar/dpdk/examples/server_node_efd/server/init.h
new file mode 100644
index 00000000..8dc5885b
--- /dev/null
+++ b/src/seastar/dpdk/examples/server_node_efd/server/init.h
@@ -0,0 +1,76 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2016-2017 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.
+ */
+
+#ifndef _INIT_H_
+#define _INIT_H_
+
+/*
+ * #include <rte_ring.h>
+ * #include "args.h"
+ */
+
+/*
+ * Define a node structure with all needed info, including
+ * stats from the nodes.
+ */
+struct node {
+ struct rte_ring *rx_q;
+ unsigned int node_id;
+ /* these stats hold how many packets the node will actually receive,
+ * and how many packets were dropped because the node's queue was full.
+ * The port-info stats, in contrast, record how many packets were received
+ * or transmitted on an actual NIC port.
+ */
+ struct {
+ uint64_t rx;
+ uint64_t rx_drop;
+ } stats;
+};
+
+extern struct rte_efd_table *efd_table;
+extern struct node *nodes;
+
+/*
+ * shared information between server and nodes: number of nodes,
+ * port numbers, rx and tx stats etc.
+ */
+extern struct shared_info *info;
+
+extern struct rte_mempool *pktmbuf_pool;
+extern uint8_t num_nodes;
+extern unsigned int num_sockets;
+extern uint32_t num_flows;
+
+int init(int argc, char *argv[]);
+
+#endif /* ifndef _INIT_H_ */
diff --git a/src/seastar/dpdk/examples/server_node_efd/server/main.c b/src/seastar/dpdk/examples/server_node_efd/server/main.c
new file mode 100644
index 00000000..597b4c25
--- /dev/null
+++ b/src/seastar/dpdk/examples/server_node_efd/server/main.c
@@ -0,0 +1,362 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2016-2017 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.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <stdarg.h>
+#include <inttypes.h>
+#include <inttypes.h>
+#include <sys/queue.h>
+#include <errno.h>
+#include <netinet/ip.h>
+
+#include <rte_common.h>
+#include <rte_memory.h>
+#include <rte_memzone.h>
+#include <rte_eal.h>
+#include <rte_byteorder.h>
+#include <rte_launch.h>
+#include <rte_per_lcore.h>
+#include <rte_lcore.h>
+#include <rte_branch_prediction.h>
+#include <rte_atomic.h>
+#include <rte_ring.h>
+#include <rte_log.h>
+#include <rte_debug.h>
+#include <rte_mempool.h>
+#include <rte_memcpy.h>
+#include <rte_mbuf.h>
+#include <rte_ether.h>
+#include <rte_interrupts.h>
+#include <rte_pci.h>
+#include <rte_ethdev.h>
+#include <rte_byteorder.h>
+#include <rte_malloc.h>
+#include <rte_string_fns.h>
+#include <rte_efd.h>
+#include <rte_ip.h>
+
+#include "common.h"
+#include "args.h"
+#include "init.h"
+
+/*
+ * When doing reads from the NIC or the node queues,
+ * use this batch size
+ */
+#define PACKET_READ_SIZE 32
+
+/*
+ * Local buffers to put packets in, used to send packets in bursts to the
+ * nodes
+ */
+struct node_rx_buf {
+ struct rte_mbuf *buffer[PACKET_READ_SIZE];
+ uint16_t count;
+};
+
+struct efd_stats {
+ uint64_t distributed;
+ uint64_t drop;
+} flow_dist_stats;
+
+/* One buffer per node rx queue - dynamically allocate array */
+static struct node_rx_buf *cl_rx_buf;
+
+static const char *
+get_printable_mac_addr(uint8_t port)
+{
+ static const char err_address[] = "00:00:00:00:00:00";
+ static char addresses[RTE_MAX_ETHPORTS][sizeof(err_address)];
+ struct ether_addr mac;
+
+ if (unlikely(port >= RTE_MAX_ETHPORTS))
+ return err_address;
+ if (unlikely(addresses[port][0] == '\0')) {
+ rte_eth_macaddr_get(port, &mac);
+ snprintf(addresses[port], sizeof(addresses[port]),
+ "%02x:%02x:%02x:%02x:%02x:%02x\n",
+ mac.addr_bytes[0], mac.addr_bytes[1],
+ mac.addr_bytes[2], mac.addr_bytes[3],
+ mac.addr_bytes[4], mac.addr_bytes[5]);
+ }
+ return addresses[port];
+}
+
+/*
+ * This function displays the recorded statistics for each port
+ * and for each node. It uses ANSI terminal codes to clear
+ * screen when called. It is called from a single non-master
+ * thread in the server process, when the process is run with more
+ * than one lcore enabled.
+ */
+static void
+do_stats_display(void)
+{
+ unsigned int i, j;
+ const char clr[] = {27, '[', '2', 'J', '\0'};
+ const char topLeft[] = {27, '[', '1', ';', '1', 'H', '\0'};
+ uint64_t port_tx[RTE_MAX_ETHPORTS], port_tx_drop[RTE_MAX_ETHPORTS];
+ uint64_t node_tx[MAX_NODES], node_tx_drop[MAX_NODES];
+
+ /* to get TX stats, we need to do some summing calculations */
+ memset(port_tx, 0, sizeof(port_tx));
+ memset(port_tx_drop, 0, sizeof(port_tx_drop));
+ memset(node_tx, 0, sizeof(node_tx));
+ memset(node_tx_drop, 0, sizeof(node_tx_drop));
+
+ for (i = 0; i < num_nodes; i++) {
+ const struct tx_stats *tx = &info->tx_stats[i];
+
+ for (j = 0; j < info->num_ports; j++) {
+ const uint64_t tx_val = tx->tx[info->id[j]];
+ const uint64_t drop_val = tx->tx_drop[info->id[j]];
+
+ port_tx[j] += tx_val;
+ port_tx_drop[j] += drop_val;
+ node_tx[i] += tx_val;
+ node_tx_drop[i] += drop_val;
+ }
+ }
+
+ /* Clear screen and move to top left */
+ printf("%s%s", clr, topLeft);
+
+ printf("PORTS\n");
+ printf("-----\n");
+ for (i = 0; i < info->num_ports; i++)
+ printf("Port %u: '%s'\t", (unsigned int)info->id[i],
+ get_printable_mac_addr(info->id[i]));
+ printf("\n\n");
+ for (i = 0; i < info->num_ports; i++) {
+ printf("Port %u - rx: %9"PRIu64"\t"
+ "tx: %9"PRIu64"\n",
+ (unsigned int)info->id[i], info->rx_stats.rx[i],
+ port_tx[i]);
+ }
+
+ printf("\nSERVER\n");
+ printf("-----\n");
+ printf("distributed: %9"PRIu64", drop: %9"PRIu64"\n",
+ flow_dist_stats.distributed, flow_dist_stats.drop);
+
+ printf("\nNODES\n");
+ printf("-------\n");
+ for (i = 0; i < num_nodes; i++) {
+ const unsigned long long rx = nodes[i].stats.rx;
+ const unsigned long long rx_drop = nodes[i].stats.rx_drop;
+ const struct filter_stats *filter = &info->filter_stats[i];
+
+ printf("Node %2u - rx: %9llu, rx_drop: %9llu\n"
+ " tx: %9"PRIu64", tx_drop: %9"PRIu64"\n"
+ " filter_passed: %9"PRIu64", "
+ "filter_drop: %9"PRIu64"\n",
+ i, rx, rx_drop, node_tx[i], node_tx_drop[i],
+ filter->passed, filter->drop);
+ }
+
+ printf("\n");
+}
+
+/*
+ * The function called from each non-master lcore used by the process.
+ * The test_and_set function is used to randomly pick a single lcore on which
+ * the code to display the statistics will run. Otherwise, the code just
+ * repeatedly sleeps.
+ */
+static int
+sleep_lcore(__attribute__((unused)) void *dummy)
+{
+ /* Used to pick a display thread - static, so zero-initialised */
+ static rte_atomic32_t display_stats;
+
+ /* Only one core should display stats */
+ if (rte_atomic32_test_and_set(&display_stats)) {
+ const unsigned int sleeptime = 1;
+
+ printf("Core %u displaying statistics\n", rte_lcore_id());
+
+ /* Longer initial pause so above printf is seen */
+ sleep(sleeptime * 3);
+
+ /* Loop forever: sleep always returns 0 or <= param */
+ while (sleep(sleeptime) <= sleeptime)
+ do_stats_display();
+ }
+ return 0;
+}
+
+/*
+ * Function to set all the node statistic values to zero.
+ * Called at program startup.
+ */
+static void
+clear_stats(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < num_nodes; i++)
+ nodes[i].stats.rx = nodes[i].stats.rx_drop = 0;
+}
+
+/*
+ * send a burst of traffic to a node, assuming there are packets
+ * available to be sent to this node
+ */
+static void
+flush_rx_queue(uint16_t node)
+{
+ uint16_t j;
+ struct node *cl;
+
+ if (cl_rx_buf[node].count == 0)
+ return;
+
+ cl = &nodes[node];
+ if (rte_ring_enqueue_bulk(cl->rx_q, (void **)cl_rx_buf[node].buffer,
+ cl_rx_buf[node].count, NULL) != cl_rx_buf[node].count){
+ for (j = 0; j < cl_rx_buf[node].count; j++)
+ rte_pktmbuf_free(cl_rx_buf[node].buffer[j]);
+ cl->stats.rx_drop += cl_rx_buf[node].count;
+ } else
+ cl->stats.rx += cl_rx_buf[node].count;
+
+ cl_rx_buf[node].count = 0;
+}
+
+/*
+ * marks a packet down to be sent to a particular node process
+ */
+static inline void
+enqueue_rx_packet(uint8_t node, struct rte_mbuf *buf)
+{
+ cl_rx_buf[node].buffer[cl_rx_buf[node].count++] = buf;
+}
+
+/*
+ * This function takes a group of packets and routes them
+ * individually to the node process. Very simply round-robins the packets
+ * without checking any of the packet contents.
+ */
+static void
+process_packets(uint32_t port_num __rte_unused, struct rte_mbuf *pkts[],
+ uint16_t rx_count, unsigned int socket_id)
+{
+ uint16_t i;
+ uint8_t node;
+ efd_value_t data[RTE_EFD_BURST_MAX];
+ const void *key_ptrs[RTE_EFD_BURST_MAX];
+
+ struct ipv4_hdr *ipv4_hdr;
+ uint32_t ipv4_dst_ip[RTE_EFD_BURST_MAX];
+
+ for (i = 0; i < rx_count; i++) {
+ /* Handle IPv4 header.*/
+ ipv4_hdr = rte_pktmbuf_mtod_offset(pkts[i], struct ipv4_hdr *,
+ sizeof(struct ether_hdr));
+ ipv4_dst_ip[i] = ipv4_hdr->dst_addr;
+ key_ptrs[i] = (void *)&ipv4_dst_ip[i];
+ }
+
+ rte_efd_lookup_bulk(efd_table, socket_id, rx_count,
+ (const void **) key_ptrs, data);
+ for (i = 0; i < rx_count; i++) {
+ node = (uint8_t) ((uintptr_t)data[i]);
+
+ if (node >= num_nodes) {
+ /*
+ * Node is out of range, which means that
+ * flow has not been inserted
+ */
+ flow_dist_stats.drop++;
+ rte_pktmbuf_free(pkts[i]);
+ } else {
+ flow_dist_stats.distributed++;
+ enqueue_rx_packet(node, pkts[i]);
+ }
+ }
+
+ for (i = 0; i < num_nodes; i++)
+ flush_rx_queue(i);
+}
+
+/*
+ * Function called by the master lcore of the DPDK process.
+ */
+static void
+do_packet_forwarding(void)
+{
+ unsigned int port_num = 0; /* indexes the port[] array */
+ unsigned int socket_id = rte_socket_id();
+
+ for (;;) {
+ struct rte_mbuf *buf[PACKET_READ_SIZE];
+ uint16_t rx_count;
+
+ /* read a port */
+ rx_count = rte_eth_rx_burst(info->id[port_num], 0,
+ buf, PACKET_READ_SIZE);
+ info->rx_stats.rx[port_num] += rx_count;
+
+ /* Now process the NIC packets read */
+ if (likely(rx_count > 0))
+ process_packets(port_num, buf, rx_count, socket_id);
+
+ /* move to next port */
+ if (++port_num == info->num_ports)
+ port_num = 0;
+ }
+}
+
+int
+main(int argc, char *argv[])
+{
+ /* initialise the system */
+ if (init(argc, argv) < 0)
+ return -1;
+ RTE_LOG(INFO, APP, "Finished Process Init.\n");
+
+ cl_rx_buf = calloc(num_nodes, sizeof(cl_rx_buf[0]));
+
+ /* clear statistics */
+ clear_stats();
+
+ /* put all other cores to sleep bar master */
+ rte_eal_mp_remote_launch(sleep_lcore, NULL, SKIP_MASTER);
+
+ do_packet_forwarding();
+ return 0;
+}