Imported Upstream version 16.04

[deb_dpdk.git] / examples / quota_watermark / qw / args.c

diff --git a/examples/quota_watermark/qw/args.c b/examples/quota_watermark/qw/args.c
new file mode 100644 (file)
index 0000000..408b54d
--- /dev/null
+++ b/examples/quota_watermark/qw/args.c
@@ -0,0 +1,104 @@
+/*-
+ *   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.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <rte_common.h>
+#include <rte_lcore.h>
+
+#include "args.h"
+
+
+unsigned int portmask = 0;
+
+
+static void
+usage(const char *prgname)
+{
+    fprintf(stderr, "Usage: %s [EAL args] -- -p <portmask>\n"
+                    "-p PORTMASK: hexadecimal bitmask of NIC ports to configure\n",
+            prgname);
+}
+
+static unsigned long
+parse_portmask(const char *portmask_str)
+{
+       return strtoul(portmask_str, NULL, 16);
+}
+
+static void
+check_core_count(void)
+{
+    if (rte_lcore_count() < 3)
+        rte_exit(EXIT_FAILURE, "At least 3 cores need to be passed in the coremask\n");
+}
+
+static void
+check_portmask_value(unsigned int portmask)
+{
+    unsigned int port_nb = 0;
+
+    port_nb = __builtin_popcount(portmask);
+
+    if (port_nb == 0)
+        rte_exit(EXIT_FAILURE, "At least 2 ports need to be passed in the portmask\n");
+
+    if (port_nb % 2 != 0)
+        rte_exit(EXIT_FAILURE, "An even number of ports is required in the portmask\n");
+}
+
+int
+parse_qw_args(int argc, char **argv)
+{
+    int opt;
+
+    while ((opt = getopt(argc, argv, "h:p:")) != -1) {
+        switch (opt) {
+        case 'h':
+                usage(argv[0]);
+                break;
+        case 'p':
+                portmask = parse_portmask(optarg);
+                break;
+        default:
+                usage(argv[0]);
+        }
+    }
+
+    check_core_count();
+    check_portmask_value(portmask);
+
+    return 0;
+}