Imported Upstream version 16.04

Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>

1 files changed, 155 insertions, 0 deletions

diff --git a/examples/multi_process/simple_mp/main.c b/examples/multi_process/simple_mp/main.c
new file mode 100644
index 00000000..2843d94e
--- /dev/null
+++ b/examples/multi_process/simple_mp/main.c
@@ -0,0 +1,155 @@
+/*-
+ *   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.
+ */
+
+/*
+ * 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_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
+
+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, rte_socket_id(), flags);
+		recv_ring = rte_ring_create(_SEC_2_PRI, ring_size, rte_socket_id(), flags);
+		message_pool = rte_mempool_create(_MSG_POOL, pool_size,
+				string_size, pool_cache, priv_data_sz,
+				NULL, NULL, NULL, NULL,
+				rte_socket_id(), 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;
+}