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/*
* Copyright (c) 2011 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <config.h>
#include <errno.h>
#include <getopt.h>
#include <linux/if_vlan.h>
#include <linux/sockios.h>
#include <net/if.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "command-line.h"
#include "util.h"
#define ADD_ALL_VLANS_CMD 10
#define DEL_ALL_VLANS_CMD 11
static void usage(void);
static void parse_options(int argc, char *argv[]);
int
main(int argc, char *argv[])
{
struct vlan_ioctl_args vlan_args;
const char *netdev, *setting;
int fd;
set_program_name(argv[0]);
parse_options(argc, argv);
if (argc - optind != 2) {
ovs_fatal(0, "exactly two non-option arguments are required "
"(use --help for help)");
}
memset(&vlan_args, 0, sizeof vlan_args);
/* Get command. */
setting = argv[optind + 1];
if (!strcmp(setting, "on")) {
vlan_args.cmd = ADD_ALL_VLANS_CMD;
} else if (!strcmp(setting, "off")) {
vlan_args.cmd = DEL_ALL_VLANS_CMD;
} else {
ovs_fatal(0, "second command line argument must be \"on\" or \"off\" "
"(not \"%s\")", setting);
}
/* Get network device name. */
netdev = argv[optind];
if (strlen(netdev) >= IFNAMSIZ) {
ovs_fatal(0, "%s: network device name too long", netdev);
}
strcpy(vlan_args.device1, netdev);
/* Execute operation. */
fd = socket(AF_INET, SOCK_STREAM, 0);
if (fd < 0) {
ovs_fatal(errno, "socket creation failed");
}
if (ioctl(fd, SIOCSIFVLAN, &vlan_args) < 0) {
if (errno == ENOPKG) {
ovs_fatal(0, "operation failed (8021q module not loaded)");
} else if (errno == EOPNOTSUPP) {
ovs_fatal(0, "operation failed (kernel does not support the "
"VLAN bug workaround)");
} else {
ovs_fatal(errno, "operation failed");
}
}
close(fd);
return 0;
}
static void
usage(void)
{
printf("\
%s, for enabling or disabling the kernel VLAN bug workaround\n\
usage: %s NETDEV SETTING\n\
where NETDEV is a network device (e.g. \"eth0\")\n\
and SETTING is \"on\" to enable the workaround or \"off\" to disable it.\n\
\n\
Options:\n\
-h, --help Print this helpful information\n\
-V, --version Display version information\n",
program_name, program_name);
exit(EXIT_SUCCESS);
}
static void
parse_options(int argc, char *argv[])
{
static const struct option long_options[] = {
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'V'},
{NULL, 0, NULL, 0},
};
char *short_options = ovs_cmdl_long_options_to_short_options(long_options);
for (;;) {
int option;
option = getopt_long(argc, argv, "+t:hVe", long_options, NULL);
if (option == -1) {
break;
}
switch (option) {
case 'h':
usage();
break;
case 'V':
ovs_print_version(0, 0);
exit(EXIT_SUCCESS);
case '?':
exit(EXIT_FAILURE);
default:
OVS_NOT_REACHED();
}
}
free(short_options);
}
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