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iwd/tools/hwsim.c
Andrew Zaborowski d03eeb398c hwsim: Refactor radio, wiphy and interface tracking 
Read wiphy addresses from sysfs and perform the wiphy name to wiphy idx
mapping using sysfs.  Do this directly on a new radio notification and
stop using new wiphy notifications except for updating the radio names.
Having the wiphy index available synchronously when parsing a new radio
event we store the wiphy index in the radio_info_rec struct directly and
drop struct wiphy_info_rec as there was a 1:1 mapping.  With this, and
knowing that all radio_info data is available when new interface
notifications are received, the tracking is simplified because dbus
objects can be created and destroyed within the notification handlers.
We also now store both the wiphy hardware address data and separately
the interface MAC addresses and can use them more appropriately in the
medium implementation.
2017-03-03 11:56:50 -06:00

1077 lines
21 KiB
C
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/*
*
* 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 <linux/if_ether.h>
#include <ctype.h>
#include <ell/ell.h>
#include "linux/nl80211.h"
#include "src/util.h"
#include "src/storage.h"
enum {
HWSIM_CMD_UNSPEC,
HWSIM_CMD_REGISTER,
HWSIM_CMD_FRAME,
HWSIM_CMD_TX_INFO_FRAME,
HWSIM_CMD_NEW_RADIO,
HWSIM_CMD_DEL_RADIO,
HWSIM_CMD_GET_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_DESTROY_RADIO_ON_CLOSE,
HWSIM_ATTR_RADIO_NAME,
HWSIM_ATTR_NO_VIF,
HWSIM_ATTR_FREQ,
__HWSIM_ATTR_MAX,
};
#define HWSIM_ATTR_MAX (__HWSIM_ATTR_MAX - 1)
static struct l_genl *genl;
static struct l_genl_family *hwsim;
static struct l_genl_family *nl80211;
static const char *options;
static int exit_status;
static enum action {
ACTION_NONE,
ACTION_CREATE,
ACTION_DESTROY,
ACTION_LIST,
} action;
static bool keep_radios_attr;
static bool no_vif_attr;
static bool p2p_attr;
static const char *radio_name_attr;
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;
uint32_t radio_id = 0;
/*
* Note that the radio id is returned in the error field of
* the returned message.
*/
if (!l_genl_attr_init(&attr, msg)) {
int err = l_genl_msg_get_error(msg);
if (err < 0) {
l_warn("Failed to initialize create return attributes"
" [%d/%s]", -err, strerror(-err));
exit_status = EXIT_FAILURE;
goto done;
}
radio_id = err;
l_info("Created new radio with id %u", radio_id);
} else {
l_warn("Failed to get create return value");
exit_status = EXIT_FAILURE;
goto done;
}
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)) {
int err = l_genl_msg_get_error(msg);
if (err < 0) {
l_warn("Failed to destroy radio [%d/%s]",
-err, strerror(-err));
exit_status = EXIT_FAILURE;
goto done;
}
l_info("Destroyed radio");
goto done;
}
while (l_genl_attr_next(&attr, &type, &len, &data))
;
done:
l_main_quit();
}
static void list_callback_done(void *user_data)
{
l_main_quit();
}
static void list_callback(struct l_genl_msg *msg, void *user_data)
{
struct l_genl_attr attr;
uint16_t type, len;
const void *data;
uint32_t idx = 0, channels = 0, custom_reg = 0;
bool reg_strict = false, p2p = false, chanctx = false;
char alpha2[2] = { };
char *hwname = NULL;
if (!l_genl_attr_init(&attr, msg)) {
int err = l_genl_msg_get_error(msg);
if (err < 0) {
l_warn("Failed to list radio [%d/%s]",
-err, strerror(-err));
exit_status = EXIT_FAILURE;
return;
}
}
while (l_genl_attr_next(&attr, &type, &len, &data)) {
switch (type) {
case HWSIM_ATTR_RADIO_ID:
if (len == 4)
idx = *(int *)data;
break;
case HWSIM_ATTR_CHANNELS:
if (len == 4)
channels = *(uint32_t *)data;
break;
case HWSIM_ATTR_REG_HINT_ALPHA2:
if (len == 2)
memcpy(&alpha2, data, len);
break;
case HWSIM_ATTR_REG_CUSTOM_REG:
if (len == 4)
custom_reg = *(uint32_t *)data;
break;
case HWSIM_ATTR_REG_STRICT_REG:
reg_strict = true;
break;
case HWSIM_ATTR_SUPPORT_P2P_DEVICE:
p2p = true;
break;
case HWSIM_ATTR_USE_CHANCTX:
chanctx = true;
break;
case HWSIM_ATTR_RADIO_NAME:
hwname = l_malloc(len + 1);
if (hwname) {
strncpy(hwname, data, len);
hwname[len] = '\0';
}
break;
default:
break;
}
}
printf("%s radio id %d channels %d alpha2 %d %d custom reg %d "
"reg strict %d p2p %d chanctx %d\n",
hwname, idx, channels, alpha2[0], alpha2[1], custom_reg,
reg_strict, p2p, chanctx);
if (hwname)
l_free(hwname);
}
struct radio_info_rec {
uint32_t id;
uint32_t wiphy_id;
char alpha2[2];
bool p2p;
uint32_t regdom;
int channels;
uint8_t addrs[ETH_ALEN * 2];
char *name;
};
struct interface_info_rec {
uint32_t id;
struct radio_info_rec *radio_rec;
uint8_t addr[ETH_ALEN];
char *name;
};
static struct l_queue *radio_info;
static struct l_queue *interface_info;
static void radio_free(void *user_data)
{
struct radio_info_rec *rec = user_data;
l_free(rec->name);
l_free(rec);
}
static void interface_free(void *user_data)
{
struct interface_info_rec *rec = user_data;
l_free(rec->name);
l_free(rec);
}
static void hwsim_radio_cache_cleanup(void)
{
l_queue_destroy(radio_info, radio_free);
l_queue_destroy(interface_info, interface_free);
radio_info = NULL;
interface_info = NULL;
}
static bool radio_info_match_id(const void *a, const void *b)
{
const struct radio_info_rec *rec = a;
uint32_t id = L_PTR_TO_UINT(b);
return rec->id == id;
}
static bool radio_info_match_wiphy_id(const void *a, const void *b)
{
const struct radio_info_rec *rec = a;
uint32_t id = L_PTR_TO_UINT(b);
return rec->wiphy_id == id;
}
static bool interface_info_match_id(const void *a, const void *b)
{
const struct interface_info_rec *rec = a;
uint32_t id = L_PTR_TO_UINT(b);
return rec->id == id;
}
static bool parse_addresses(const uint8_t *buf, size_t len,
struct radio_info_rec *rec)
{
unsigned int pos = 0, addr_idx = 0;
while (pos < len) {
int start_pos = pos;
char addr[20];
while (pos < len && !isspace(buf[pos]))
pos++;
if (pos - start_pos > sizeof(addr) - 1) {
l_error("Can't parse a %s address from sysfs",
rec->name);
return false;
}
memcpy(addr, buf + start_pos, pos - start_pos);
addr[pos - start_pos] = '\0';
if (addr_idx >= 2) {
l_error("Hwsim wiphy %s has too many addresses listed "
" in sysfs - only 2 supported", rec->name);
return false;
}
if (!util_string_to_address(addr, rec->addrs +
(addr_idx++ * ETH_ALEN))) {
l_error("Can't parse hwsim wiphy %s address from sysfs",
rec->name);
return false;
}
while (pos < len && isspace(buf[pos]))
pos++;
}
if (addr_idx < 2) {
l_error("Hwsim wiphy %s has too few addresses listed "
" in sysfs - only 2 supported", rec->name);
return false;
}
return true;
}
static void get_radio_callback(struct l_genl_msg *msg, void *user_data)
{
struct l_genl_attr attr;
uint16_t type, len;
const void *data;
const char *name = NULL;
const uint32_t *id = NULL;
size_t name_len = 0;
struct radio_info_rec *rec;
uint8_t file_buffer[128];
int bytes, consumed;
unsigned int uintval;
bool old;
if (!l_genl_attr_init(&attr, msg))
return;
while (l_genl_attr_next(&attr, &type, &len, &data)) {
switch (type) {
case HWSIM_ATTR_RADIO_ID:
if (len != 4)
break;
id = data;
break;
case HWSIM_ATTR_RADIO_NAME:
name = data;
name_len = len;
break;
}
}
if (!id || !name)
return;
rec = l_queue_find(radio_info, radio_info_match_id, L_UINT_TO_PTR(*id));
if (rec) {
old = true;
l_free(rec->name);
} else {
old = false;
rec = l_new(struct radio_info_rec, 1);
rec->id = *id;
}
rec->name = l_strndup(name, name_len);
l_genl_attr_init(&attr, msg);
while (l_genl_attr_next(&attr, &type, &len, &data)) {
switch (type) {
case HWSIM_ATTR_CHANNELS:
if (len != 4)
break;
rec->channels = *(uint32_t *) data;
break;
case HWSIM_ATTR_REG_HINT_ALPHA2:
if (len != 2)
break;
memcpy(rec->alpha2, data, 2);
break;
case HWSIM_ATTR_SUPPORT_P2P_DEVICE:
rec->p2p = true;
break;
case HWSIM_ATTR_REG_CUSTOM_REG:
if (len != 4)
break;
rec->regdom = *(uint32_t *) data;
break;
}
}
/*
* Assuming that the radio name is the wiphy name read the wiphy index
* associated with the radio and the wiphy's hardware addresses from
* sysfs. The index could be obtained through NL80211_CMD_GET_WIPHY
* but that is costly and reading the index synchronously simplifies
* the job a lot. We have to resort to sysfs anyway to obtain the
* radio addresses.
*/
bytes = read_file((char *) file_buffer, sizeof(file_buffer) - 1,
"/sys/class/ieee80211/%s/index", rec->name);
if (bytes < 0) {
l_error("Error reading index for %s from sysfs", rec->name);
goto free_radio;
}
file_buffer[bytes] = '\0';
if (sscanf((char *) file_buffer, "%u %n", &uintval, &consumed) != 1 ||
consumed != bytes) {
l_error("Error parsing index for %s from sysfs", rec->name);
goto free_radio;
}
rec->wiphy_id = uintval;
bytes = read_file(file_buffer, sizeof(file_buffer),
"/sys/class/ieee80211/%s/addresses", rec->name);
if (bytes < 0) {
l_error("Error reading addresses for %s from sysfs", rec->name);
goto free_radio;
}
if (!parse_addresses(file_buffer, bytes, rec))
goto free_radio;
if (!radio_info)
radio_info = l_queue_new();
if (!old)
l_queue_push_tail(radio_info, rec);
/* TODO: Create DBus object */
return;
free_radio:
if (!old)
radio_free(rec);
}
static void get_wiphy_callback(struct l_genl_msg *msg, void *user_data)
{
struct l_genl_attr attr;
uint16_t type, len;
const void *data;
const char *name = NULL;
uint16_t name_len = 0;
const uint32_t *id = NULL;
struct radio_info_rec *rec;
if (!l_genl_attr_init(&attr, msg))
return;
while (l_genl_attr_next(&attr, &type, &len, &data)) {
switch (type) {
case NL80211_ATTR_WIPHY:
id = data;
break;
case NL80211_ATTR_WIPHY_NAME:
name = data;
name_len = len;
break;
}
}
if (!name || !id)
return;
rec = l_queue_find(radio_info, radio_info_match_wiphy_id,
L_UINT_TO_PTR(*id));
if (!rec)
return;
if (strlen(rec->name) == name_len && !memcmp(rec->name, name, name_len))
return;
l_free(rec->name);
rec->name = l_strndup(name, name_len);
}
static void get_interface_callback(struct l_genl_msg *msg, void *user_data)
{
struct l_genl_attr attr;
uint16_t type, len;
const void *data;
const uint8_t *addr = NULL;
const uint32_t *wiphy_id = NULL;
const uint32_t *ifindex = NULL;
const char *ifname = NULL;
size_t ifname_len = 0;
struct interface_info_rec *rec;
struct radio_info_rec *radio_rec;
bool old;
if (!l_genl_attr_init(&attr, msg))
return;
while (l_genl_attr_next(&attr, &type, &len, &data)) {
switch (type) {
case NL80211_ATTR_MAC:
if (len != ETH_ALEN)
break;
addr = data;
break;
case NL80211_ATTR_WIPHY:
if (len != 4)
break;
wiphy_id = data;
break;
case NL80211_ATTR_IFINDEX:
if (len != 4)
break;
ifindex = data;
break;
case NL80211_ATTR_IFNAME:
ifname = data;
ifname_len = len;
break;
}
}
if (!addr || !wiphy_id || !ifindex || !ifname)
return;
radio_rec = l_queue_find(radio_info, radio_info_match_wiphy_id,
L_UINT_TO_PTR(*wiphy_id));
if (!radio_rec)
/* This is not a hwsim interface, don't track it */
return;
rec = l_queue_find(interface_info, interface_info_match_id,
L_UINT_TO_PTR(*ifindex));
if (rec) {
old = true;
l_free(rec->name);
} else {
old = false;
rec = l_new(struct interface_info_rec, 1);
rec->id = *ifindex;
rec->radio_rec = radio_rec;
}
memcpy(rec->addr, addr, ETH_ALEN);
rec->name = l_strndup(ifname, ifname_len);
if (!interface_info)
interface_info = l_queue_new();
if (!old)
l_queue_push_tail(interface_info, rec);
/* TODO: Create DBus object */
}
static bool interface_info_destroy_by_radio(void *data, void *user_data)
{
struct interface_info_rec *rec = data;
struct radio_info_rec *radio_rec = user_data;
if (rec->radio_rec != radio_rec)
return false;
/* TODO: Drop DBus object */
interface_free(rec);
return true;
}
static void del_radio_event(struct l_genl_msg *msg)
{
struct radio_info_rec *radio;
struct l_genl_attr attr;
uint16_t type, len;
const void *data;
const uint32_t *id = NULL;
if (!l_genl_attr_init(&attr, msg))
return;
while (l_genl_attr_next(&attr, &type, &len, &data)) {
switch (type) {
case HWSIM_ATTR_RADIO_ID:
if (len != 4)
break;
id = data;
break;
}
}
if (!id)
return;
radio = l_queue_find(radio_info, radio_info_match_id,
L_UINT_TO_PTR(*id));
if (!radio)
return;
l_queue_foreach_remove(interface_info, interface_info_destroy_by_radio,
radio);
/* TODO: Drop DBus object */
radio_free(radio);
l_queue_remove(radio_info, radio);
}
static void del_interface_event(struct l_genl_msg *msg)
{
struct interface_info_rec *interface;
struct l_genl_attr attr;
uint16_t type, len;
const void *data;
const uint32_t *ifindex = NULL;
if (!l_genl_attr_init(&attr, msg))
return;
while (l_genl_attr_next(&attr, &type, &len, &data)) {
switch (type) {
case NL80211_ATTR_IFINDEX:
if (len != 4)
break;
ifindex = data;
break;
}
}
if (!ifindex)
return;
interface = l_queue_find(interface_info, interface_info_match_id,
L_UINT_TO_PTR(*ifindex));
if (!interface)
return;
/* TODO: Drop DBus object */
interface_free(interface);
l_queue_remove(interface_info, interface);
}
static void hwsim_config(struct l_genl_msg *msg, void *user_data)
{
struct l_genl_attr attr;
uint16_t type, len;
const void *data;
uint8_t cmd;
cmd = l_genl_msg_get_command(msg);
l_debug("Config changed cmd %u", cmd);
if (!l_genl_attr_init(&attr, msg))
return;
while (l_genl_attr_next(&attr, &type, &len, &data))
l_debug("\tattr type %d len %d", type, len);
switch (cmd) {
case HWSIM_CMD_NEW_RADIO:
get_radio_callback(msg, NULL);
break;
case HWSIM_CMD_DEL_RADIO:
del_radio_event(msg);
break;
}
}
static void nl80211_config_notify(struct l_genl_msg *msg, void *user_data)
{
uint8_t cmd;
cmd = l_genl_msg_get_command(msg);
l_debug("Notification of command %u", cmd);
switch (cmd) {
case NL80211_CMD_NEW_WIPHY:
get_wiphy_callback(msg, NULL);
break;
case NL80211_CMD_NEW_INTERFACE:
get_interface_callback(msg, NULL);
break;
case NL80211_CMD_DEL_INTERFACE:
del_interface_event(msg);
break;
}
}
static void get_radio_done_initial(void *user_data)
{
struct l_genl_msg *msg;
/*
* Query interfaces now that we know we have all the radio data
* for radio lookups inside get_interface_callback, and we know
* nl80211_ready has already been called.
*/
msg = l_genl_msg_new(NL80211_CMD_GET_INTERFACE);
if (!l_genl_family_dump(nl80211, msg, get_interface_callback,
NULL, NULL)) {
l_error("Getting nl80211 interface information failed");
goto error;
}
if (!l_genl_family_register(nl80211, "config", nl80211_config_notify,
NULL, NULL)) {
l_error("Registering for nl80211 config notification "
"failed");
goto error;
}
return;
error:
exit_status = EXIT_FAILURE;
l_main_quit();
}
static void nl80211_ready(void *user_data)
{
struct l_genl_msg *msg;
msg = l_genl_msg_new(HWSIM_CMD_GET_RADIO);
if (!l_genl_family_dump(hwsim, msg, get_radio_callback,
NULL, get_radio_done_initial)) {
l_error("Getting hwsim radio information failed");
goto error;
}
return;
error:
exit_status = EXIT_FAILURE;
l_main_quit();
}
static void hwsim_ready(void *user_data)
{
struct l_genl_msg *msg;
int ret;
size_t msg_size;
uint32_t radio_id;
ret = l_genl_family_register(hwsim, "config", hwsim_config,
NULL, NULL);
if (!ret) {
fprintf(stderr, "Failed to create hwsim config listener\n");
exit_status = EXIT_FAILURE;
l_main_quit();
return;
}
switch (action) {
case ACTION_LIST:
msg = l_genl_msg_new_sized(HWSIM_CMD_GET_RADIO,
options ? 8 : 4);
if (options) {
radio_id = atoi(options);
l_genl_msg_append_attr(msg, HWSIM_ATTR_RADIO_ID,
4, &radio_id);
l_genl_family_send(hwsim, msg, list_callback,
NULL, list_callback_done);
} else {
l_genl_family_dump(hwsim, msg, list_callback,
NULL, list_callback_done);
}
break;
case ACTION_CREATE:
msg_size = 0;
if (!keep_radios_attr)
msg_size += 4;
if (radio_name_attr)
msg_size += strlen(radio_name_attr) + 1;
if (no_vif_attr)
msg_size += 4;
if (p2p_attr)
msg_size += 4;
msg = l_genl_msg_new_sized(HWSIM_CMD_NEW_RADIO, msg_size);
if (!keep_radios_attr)
l_genl_msg_append_attr(msg,
HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE,
0, NULL);
if (radio_name_attr)
l_genl_msg_append_attr(msg, HWSIM_ATTR_RADIO_NAME,
strlen(radio_name_attr) + 1,
radio_name_attr);
if (no_vif_attr)
l_genl_msg_append_attr(msg, HWSIM_ATTR_NO_VIF, 0, NULL);
if (p2p_attr)
l_genl_msg_append_attr(msg,
HWSIM_ATTR_SUPPORT_P2P_DEVICE,
0, NULL);
l_genl_family_send(hwsim, msg, create_callback, NULL, NULL);
break;
case ACTION_DESTROY:
radio_id = atoi(options);
msg = l_genl_msg_new_sized(HWSIM_CMD_DEL_RADIO, 8);
l_genl_msg_append_attr(msg, HWSIM_ATTR_RADIO_ID, 4, &radio_id);
l_genl_family_send(hwsim, msg, destroy_callback, NULL, NULL);
break;
case ACTION_NONE:
l_genl_family_set_watches(nl80211, nl80211_ready, NULL,
NULL, NULL);
break;
}
return;
}
static void hwsim_disappeared(void *user_data)
{
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-L, --list [id] List simulated radios\n"
"\t-C, --create Create new simulated radio\n"
"\t-D, --destroy <id> Destroy existing radio\n"
"\t-k, --keep Do not destroy radios when "
"program exits\n"
"\t-n, --name <name> Name of a radio to be created\n"
"\t-i, --nointerface Do not create VIF\n"
"\t-p, --p2p Support P2P\n"
"\t-h, --help Show help options\n");
}
static const struct option main_options[] = {
{ "list", optional_argument, NULL, 'L' },
{ "create", no_argument, NULL, 'C' },
{ "destroy", required_argument, NULL, 'D' },
{ "keep", no_argument, NULL, 'k' },
{ "name", required_argument, NULL, 'n' },
{ "nointerface", no_argument, NULL, 'i' },
{ "p2p", no_argument, NULL, 'p' },
{ "version", no_argument, NULL, 'v' },
{ "help", no_argument, NULL, 'h' },
{ }
};
int main(int argc, char *argv[])
{
struct l_signal *signal;
sigset_t mask;
int actions = 0;
for (;;) {
int opt;
opt = getopt_long(argc, argv, ":L:CD:kn:ipv", main_options,
NULL);
if (opt < 0)
break;
switch (opt) {
case ':':
if (optopt == 'L') {
action = ACTION_LIST;
actions++;
} else {
printf("option '-%c' requires an argument\n",
optopt);
return EXIT_FAILURE;
}
break;
case 'L':
action = ACTION_LIST;
options = optarg;
actions++;
break;
case 'C':
action = ACTION_CREATE;
actions++;
break;
case 'D':
action = ACTION_DESTROY;
options = optarg;
actions++;
break;
case 'k':
keep_radios_attr = true;
break;
case 'n':
radio_name_attr = optarg;
break;
case 'i':
no_vif_attr = true;
break;
case 'p':
p2p_attr = true;
break;
case 'v':
printf("%s\n", VERSION);
return EXIT_SUCCESS;
case 'h':
usage();
return EXIT_SUCCESS;
default:
printf("unrecognized argument '%s'\n",
argv[optind - 1]);
return EXIT_FAILURE;
}
}
if (argc - optind > 0) {
fprintf(stderr, "Invalid command line parameters\n");
return EXIT_FAILURE;
}
if (actions > 1) {
fprintf(stderr, "Only one action can be specified\n");
return EXIT_FAILURE;
}
if (!l_main_init())
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;
}
nl80211 = l_genl_family_new(genl, NL80211_GENL_NAME);
if (!nl80211) {
fprintf(stderr, "Failed to create nl80211 genl family\n");
l_genl_family_unref(hwsim);
l_genl_unref(genl);
exit_status = EXIT_FAILURE;
goto done;
}
l_genl_family_set_watches(hwsim, hwsim_ready, hwsim_disappeared,
NULL, NULL);
exit_status = EXIT_SUCCESS;
l_main_run();
l_genl_family_unref(hwsim);
l_genl_family_unref(nl80211);
l_genl_unref(genl);
hwsim_radio_cache_cleanup();
done:
l_signal_remove(signal);
l_main_exit();
return exit_status;
}
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