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+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2012 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.
+ *
+ * version: DPDK.L.1.2.3-3
+ */
+
+/*
+ * This sample application is a simple multi-process application which
+ * demostrates sharing of queues and memory pools between processes, and
+ * using those queues/pools for communication between the processes.
+ *
+ * Application is designed to run with two processes, a primary and a
+ * secondary, and each accepts commands on the commandline, the most
+ * important of which is "send", which just sends a string to the other
+ * process.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <unistd.h>
+#include <termios.h>
+#include <sys/queue.h>
+
+#include <rte_common.h>
+#include <rte_memory.h>
+#include <rte_memzone.h>
+#include <rte_launch.h>
+#include <rte_tailq.h>
+#include <rte_eal.h>
+#include <rte_per_lcore.h>
+#include <rte_lcore.h>
+#include <rte_debug.h>
+#include <rte_atomic.h>
+#include <rte_branch_prediction.h>
+#include <rte_ring.h>
+#include <rte_log.h>
+#include <rte_mempool.h>
+#include <cmdline_rdline.h>
+#include <cmdline_parse.h>
+#include <cmdline_socket.h>
+#include <cmdline.h>
+#include "mp_commands.h"
+
+#define RTE_LOGTYPE_APP RTE_LOGTYPE_USER1
+
+#define SOCKET0 0
+
+static const char *_MSG_POOL = "MSG_POOL";
+static const char *_SEC_2_PRI = "SEC_2_PRI";
+static const char *_PRI_2_SEC = "PRI_2_SEC";
+const unsigned string_size = 64;
+
+struct rte_ring *send_ring, *recv_ring;
+struct rte_mempool *message_pool;
+volatile int quit = 0;
+
+static int
+lcore_recv(__attribute__((unused)) void *arg)
+{
+ unsigned lcore_id = rte_lcore_id();
+
+ printf("Starting core %u\n", lcore_id);
+ while (!quit){
+ void *msg;
+ if (rte_ring_dequeue(recv_ring, &msg) < 0){
+ usleep(5);
+ continue;
+ }
+ printf("core %u: Received '%s'\n", lcore_id, (char *)msg);
+ rte_mempool_put(message_pool, msg);
+ }
+
+ return 0;
+}
+
+int
+main(int argc, char **argv)
+{
+ const unsigned flags = 0;
+ const unsigned ring_size = 64;
+ const unsigned pool_size = 1024;
+ const unsigned pool_cache = 32;
+ const unsigned priv_data_sz = 0;
+
+ int ret;
+ unsigned lcore_id;
+
+ ret = rte_eal_init(argc, argv);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Cannot init EAL\n");
+
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY){
+ send_ring = rte_ring_create(_PRI_2_SEC, ring_size, SOCKET0, flags);
+ recv_ring = rte_ring_create(_SEC_2_PRI, ring_size, SOCKET0, flags);
+ message_pool = rte_mempool_create(_MSG_POOL, pool_size,
+ string_size, pool_cache, priv_data_sz,
+ NULL, NULL, NULL, NULL,
+ SOCKET0, flags);
+ } else {
+ recv_ring = rte_ring_lookup(_PRI_2_SEC);
+ send_ring = rte_ring_lookup(_SEC_2_PRI);
+ message_pool = rte_mempool_lookup(_MSG_POOL);
+ }
+ if (send_ring == NULL)
+ rte_exit(EXIT_FAILURE, "Problem getting sending ring\n");
+ if (recv_ring == NULL)
+ rte_exit(EXIT_FAILURE, "Problem getting receiving ring\n");
+ if (message_pool == NULL)
+ rte_exit(EXIT_FAILURE, "Problem getting message pool\n");
+
+ RTE_LOG(INFO, APP, "Finished Process Init.\n");
+
+ /* call lcore_recv() on every slave lcore */
+ RTE_LCORE_FOREACH_SLAVE(lcore_id) {
+ rte_eal_remote_launch(lcore_recv, NULL, lcore_id);
+ }
+
+ /* call cmd prompt on master lcore */
+ struct cmdline *cl = cmdline_stdin_new(simple_mp_ctx, "\nsimple_mp > ");
+ if (cl == NULL)
+ rte_exit(EXIT_FAILURE, "Cannot create cmdline instance\n");
+ cmdline_interact(cl);
+ cmdline_stdin_exit(cl);
+
+ rte_eal_mp_wait_lcore();
+ return 0;
+}