--- /dev/null
+/*-
+ * 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 <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"
+
+/* global var for number of clients - extern in header */
+uint8_t num_clients;
+
+static const char *progname;
+
+/**
+ * Prints out usage information to stdout
+ */
+static void
+usage(void)
+{
+ printf(
+ "%s [EAL options] -- -p PORTMASK -n NUM_CLIENTS [-s NUM_SOCKETS]\n"
+ " -p PORTMASK: hexadecimal bitmask of ports to use\n"
+ " -n NUM_CLIENTS: number of client processes to use\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)count);
+ else
+ ports->id[ports->num_ports++] = count;
+ }
+ pm = (pm >> 1);
+ count++;
+ }
+
+ return 0;
+}
+
+/**
+ * Take the number of clients parameter passed to the app
+ * and convert to a number to store in the num_clients variable
+ */
+static int
+parse_num_clients(const char *clients)
+{
+ char *end = NULL;
+ unsigned long temp;
+
+ if (clients == NULL || *clients == '\0')
+ return -1;
+
+ temp = strtoul(clients, &end, 10);
+ if (end == NULL || *end != '\0' || temp == 0)
+ return -1;
+
+ num_clients = (uint8_t)temp;
+ 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: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_clients(optarg) != 0){
+ usage();
+ return -1;
+ }
+ break;
+ default:
+ printf("ERROR: Unknown option '%c'\n", opt);
+ usage();
+ return -1;
+ }
+ }
+
+ if (ports->num_ports == 0 || num_clients == 0){
+ usage();
+ return -1;
+ }
+
+ if (ports->num_ports % 2 != 0){
+ printf("ERROR: application requires an even number of ports to use\n");
+ return -1;
+ }
+ return 0;
+}
Code Review / deb_dpdk.git / blobdiff