3998e2a072
Replace the BSD license header with the SPDX tag for files with only an Intel copyright on them. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
144 lines
3.0 KiB
C
144 lines
3.0 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <getopt.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <rte_memory.h>
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#include <rte_string_fns.h>
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#include "common.h"
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#include "args.h"
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#include "init.h"
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/* global var for number of clients - extern in header */
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uint8_t num_clients;
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static const char *progname;
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/**
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* Prints out usage information to stdout
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*/
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static void
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usage(void)
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{
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printf(
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"%s [EAL options] -- -p PORTMASK -n NUM_CLIENTS [-s NUM_SOCKETS]\n"
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" -p PORTMASK: hexadecimal bitmask of ports to use\n"
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" -n NUM_CLIENTS: number of client processes to use\n"
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, progname);
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}
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/**
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* The ports to be used by the application are passed in
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* the form of a bitmask. This function parses the bitmask
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* and places the port numbers to be used into the port[]
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* array variable
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*/
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static int
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parse_portmask(uint8_t max_ports, const char *portmask)
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{
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char *end = NULL;
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unsigned long pm;
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uint16_t count = 0;
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if (portmask == NULL || *portmask == '\0')
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return -1;
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/* convert parameter to a number and verify */
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pm = strtoul(portmask, &end, 16);
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if (end == NULL || *end != '\0' || pm == 0)
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return -1;
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/* loop through bits of the mask and mark ports */
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while (pm != 0){
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if (pm & 0x01){ /* bit is set in mask, use port */
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if (count >= max_ports)
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printf("WARNING: requested port %u not present"
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" - ignoring\n", (unsigned)count);
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else
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ports->id[ports->num_ports++] = count;
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}
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pm = (pm >> 1);
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count++;
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}
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return 0;
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}
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/**
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* Take the number of clients parameter passed to the app
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* and convert to a number to store in the num_clients variable
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*/
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static int
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parse_num_clients(const char *clients)
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{
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char *end = NULL;
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unsigned long temp;
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if (clients == NULL || *clients == '\0')
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return -1;
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temp = strtoul(clients, &end, 10);
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if (end == NULL || *end != '\0' || temp == 0)
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return -1;
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num_clients = (uint8_t)temp;
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return 0;
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}
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/**
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* The application specific arguments follow the DPDK-specific
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* arguments which are stripped by the DPDK init. This function
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* processes these application arguments, printing usage info
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* on error.
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*/
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int
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parse_app_args(uint16_t max_ports, int argc, char *argv[])
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{
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int option_index, opt;
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char **argvopt = argv;
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static struct option lgopts[] = { /* no long options */
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{NULL, 0, 0, 0 }
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};
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progname = argv[0];
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while ((opt = getopt_long(argc, argvopt, "n:p:", lgopts,
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&option_index)) != EOF){
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switch (opt){
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case 'p':
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if (parse_portmask(max_ports, optarg) != 0){
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usage();
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return -1;
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}
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break;
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case 'n':
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if (parse_num_clients(optarg) != 0){
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usage();
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return -1;
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}
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break;
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default:
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printf("ERROR: Unknown option '%c'\n", opt);
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usage();
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return -1;
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}
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}
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if (ports->num_ports == 0 || num_clients == 0){
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usage();
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return -1;
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}
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if (ports->num_ports % 2 != 0){
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printf("ERROR: application requires an even number of ports to use\n");
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return -1;
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}
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return 0;
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}
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