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mirror of https://git.kernel.org/pub/scm/network/wireless/iwd.git synced 2024-12-22 21:22:37 +01:00
iwd/tools/hwsim.c

266 lines
5.7 KiB
C

/*
*
* Wireless daemon for Linux
*
* Copyright (C) 2013-2014 Intel Corporation. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include <ell/ell.h>
enum {
HWSIM_CMD_UNSPEC,
HWSIM_CMD_REGISTER,
HWSIM_CMD_FRAME,
HWSIM_CMD_TX_INFO_FRAME,
HWSIM_CMD_CREATE_RADIO,
HWSIM_CMD_DESTROY_RADIO,
__HWSIM_CMD_MAX,
};
#define HWSIM_CMD_MAX (_HWSIM_CMD_MAX - 1)
enum {
HWSIM_ATTR_UNSPEC,
HWSIM_ATTR_ADDR_RECEIVER,
HWSIM_ATTR_ADDR_TRANSMITTER,
HWSIM_ATTR_FRAME,
HWSIM_ATTR_FLAGS,
HWSIM_ATTR_RX_RATE,
HWSIM_ATTR_SIGNAL,
HWSIM_ATTR_TX_INFO,
HWSIM_ATTR_COOKIE,
HWSIM_ATTR_CHANNELS,
HWSIM_ATTR_RADIO_ID,
HWSIM_ATTR_REG_HINT_ALPHA2,
HWSIM_ATTR_REG_CUSTOM_REG,
HWSIM_ATTR_REG_STRICT_REG,
HWSIM_ATTR_SUPPORT_P2P_DEVICE,
HWSIM_ATTR_USE_CHANCTX,
__HWSIM_ATTR_MAX,
};
#define HWSIM_ATTR_MAX (__HWSIM_ATTR_MAX - 1)
static struct l_genl_family *hwsim;
static bool create_action = false;
static const char *destroy_action = NULL;
static void do_debug(const char *str, void *user_data)
{
const char *prefix = user_data;
l_info("%s%s", prefix, str);
}
static void create_callback(struct l_genl_msg *msg, void *user_data)
{
struct l_genl_attr attr;
uint16_t type, len;
const void *data;
uint32_t radio_id = 0;
if (!l_genl_attr_init(&attr, msg)) {
l_warn("Failed to initialize create return attributes");
goto done;
}
while (l_genl_attr_next(&attr, &type, &len, &data)) {
switch (type) {
case HWSIM_ATTR_RADIO_ID:
if (len != sizeof(uint32_t)) {
l_warn("Invalid radio id attribute");
return;
}
radio_id = *((uint32_t *) data);
break;
}
}
l_info("Created new radio with id %u", radio_id);
done:
l_main_quit();
}
static void destroy_callback(struct l_genl_msg *msg, void *user_data)
{
struct l_genl_attr attr;
uint16_t type, len;
const void *data;
if (!l_genl_attr_init(&attr, msg)) {
l_warn("Failed to initialize destroy return attributes");
goto done;
}
while (l_genl_attr_next(&attr, &type, &len, &data)) {
}
l_info("Destroyed radio");
done:
l_main_quit();
}
static void hwsim_ready(void *user_data)
{
struct l_genl_msg *msg;
if (create_action) {
msg = l_genl_msg_new(HWSIM_CMD_CREATE_RADIO);
l_genl_family_send(hwsim, msg, create_callback, NULL, NULL);
l_genl_msg_unref(msg);
return;
} else if (destroy_action) {
uint32_t id = atoi(destroy_action);
msg = l_genl_msg_new_sized(HWSIM_CMD_DESTROY_RADIO, 8);
l_genl_msg_append_attr(msg, HWSIM_ATTR_RADIO_ID, 4, &id);
l_genl_family_send(hwsim, msg, destroy_callback, NULL, NULL);
l_genl_msg_unref(msg);
} else
l_main_quit();
}
static void signal_handler(struct l_signal *signal, uint32_t signo,
void *user_data)
{
switch (signo) {
case SIGINT:
case SIGTERM:
l_main_quit();
break;
}
}
static void usage(void)
{
printf("hwsim - Wireless simulator\n"
"Usage:\n");
printf("\thwsim [options]\n");
printf("Options:\n"
"\t-C, --create Create new simulated radio\n"
"\t-D, --destroy <id> Destroy existing radio\n"
"\t-h, --help Show help options\n");
}
static const struct option main_options[] = {
{ "create", no_argument, NULL, 'C' },
{ "destroy", required_argument, NULL, 'D' },
{ "version", no_argument, NULL, 'v' },
{ "help", no_argument, NULL, 'h' },
{ }
};
int main(int argc, char *argv[])
{
struct l_signal *signal;
struct l_genl *genl;
sigset_t mask;
int exit_status;
for (;;) {
int opt;
opt = getopt_long(argc, argv, "CD:vh", main_options, NULL);
if (opt < 0)
break;
switch (opt) {
case 'C':
create_action = true;
break;
case 'D':
destroy_action = optarg;
break;
case 'v':
printf("%s\n", VERSION);
return EXIT_SUCCESS;
case 'h':
usage();
return EXIT_SUCCESS;
default:
return EXIT_FAILURE;
}
}
if (argc - optind > 0) {
fprintf(stderr, "Invalid command line parameters\n");
return EXIT_FAILURE;
}
if (create_action && destroy_action) {
fprintf(stderr, "Only one action can be specified\n");
return EXIT_FAILURE;
}
if (!create_action && !destroy_action) {
fprintf(stderr, "No action has been specified\n");
return EXIT_FAILURE;
}
sigemptyset(&mask);
sigaddset(&mask, SIGINT);
sigaddset(&mask, SIGTERM);
signal = l_signal_create(&mask, signal_handler, NULL, NULL);
l_log_set_stderr();
printf("Wireless simulator ver %s\n", VERSION);
genl = l_genl_new_default();
if (!genl) {
fprintf(stderr, "Failed to initialize generic netlink\n");
exit_status = EXIT_FAILURE;
goto done;
}
if (getenv("HWSIM_DEBUG"))
l_genl_set_debug(genl, do_debug, "[GENL] ", NULL);
hwsim = l_genl_family_new(genl, "MAC80211_HWSIM");
if (!hwsim) {
fprintf(stderr, "Failed to create generic netlink family\n");
l_genl_unref(genl);
exit_status = EXIT_FAILURE;
goto done;
}
l_genl_family_set_watches(hwsim, hwsim_ready, NULL, NULL, NULL);
l_main_run();
l_genl_family_unref(hwsim);
l_genl_unref(genl);
exit_status = EXIT_SUCCESS;
done:
l_signal_remove(signal);
return exit_status;
}