X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=examples%2Fserver_node_efd%2Fserver%2Finit.c;fp=examples%2Fserver_node_efd%2Fserver%2Finit.c;h=82457b448fdc8a54cb8460ef536634a93fc85758;hb=7595afa4d30097c1177b69257118d8ad89a539be;hp=0000000000000000000000000000000000000000;hpb=ce3d555e43e3795b5d9507fcfc76b7a0a92fd0d6;p=deb_dpdk.git

diff --git a/examples/server_node_efd/server/init.c b/examples/server_node_efd/server/init.c
new file mode 100644
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+++ b/examples/server_node_efd/server/init.c
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+/*-
+ *   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;
+}