/usr/src/openvswitch-1.4.0/utilities/ovs-vlan-bug-workaround.c is in openvswitch-datapath-dkms 1.4.0-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 | /*
* Copyright (c) 2011 Nicira Networks.
*
* 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 = 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:
NOT_REACHED();
}
}
free(short_options);
}
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