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/*
* Copyright 2010, Intel Corporation
*
* This file is part of PowerTOP
*
* This program file is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; version 2 of the License.
*
* This program 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 General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program in a file named COPYING; if not, write to the
* Free Software Foundation, Inc,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
* or just google for it.
*
* Authors:
* Arjan van de Ven <arjan@linux.intel.com>
*/
#include "tuning.h"
#include "tunable.h"
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <utility>
#include <iostream>
#include <fstream>
#include <unistd.h>
#include <sys/types.h>
#include <dirent.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <errno.h>
#include "../lib.h"
#include "bluetooth.h"
bt_tunable::bt_tunable(void) : tunable("", 1.0, _("Good"), _("Bad"), _("Unknown"))
{
sprintf(desc, _("Bluetooth device interface status"));
pt_strcpy(toggle_bad, "/usr/sbin/hciconfig hci0 up &> /dev/null &");
pt_strcpy(toggle_good, "/usr/sbin/hciconfig hci0 down &> /dev/null");
}
/* structure definitions copied from include/net/bluetooth/hci.h from the 2.6.20 kernel */
#define HCIGETDEVINFO _IOR('H', 211, int)
#define BTPROTO_HCI 1
#define __u16 uint16_t
#define __u8 uint8_t
#define __u32 uint32_t
typedef struct {
__u8 b[6];
} __attribute__((packed)) bdaddr_t;
struct hci_dev_stats {
__u32 err_rx;
__u32 err_tx;
__u32 cmd_tx;
__u32 evt_rx;
__u32 acl_tx;
__u32 acl_rx;
__u32 sco_tx;
__u32 sco_rx;
__u32 byte_rx;
__u32 byte_tx;
};
struct hci_dev_info {
__u16 dev_id;
char name[8];
bdaddr_t bdaddr;
__u32 flags;
__u8 type;
__u8 features[8];
__u32 pkt_type;
__u32 link_policy;
__u32 link_mode;
__u16 acl_mtu;
__u16 acl_pkts;
__u16 sco_mtu;
__u16 sco_pkts;
struct hci_dev_stats stat;
};
static int previous_bytes = -1;
static time_t last_check_time = 0;
static int last_check_result;
int bt_tunable::good_bad(void)
{
struct hci_dev_info devinfo;
FILE *file = 0;
int fd;
int thisbytes = 0;
int ret;
int result = TUNE_GOOD;
fd = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
if (fd < 0)
return TUNE_GOOD;
memset(&devinfo, 0, sizeof(devinfo));
strcpy(devinfo.name, "hci0");
ret = ioctl(fd, HCIGETDEVINFO, (void *) &devinfo);
if (ret < 0)
goto out;
if ( (devinfo.flags & 1) == 0 &&
access("/sys/module/hci_usb",F_OK)) /* interface down already */
goto out;
thisbytes += devinfo.stat.byte_rx;
thisbytes += devinfo.stat.byte_tx;
/* device is active... so we need to leave it on */
if (thisbytes != previous_bytes)
goto out;
/* this check is expensive.. only do it once per minute */
if (time(NULL) - last_check_time > 60) {
last_check_result = TUNE_BAD;
/* now, also check for active connections */
file = popen("/usr/bin/hcitool con 2> /dev/null", "r");
if (file) {
char line[2048];
/* first line is standard header */
if (fgets(line, 2047, file) == NULL)
goto out;
memset(line, 0, 2048);
if (fgets(line, 2047, file) == NULL) {
result = last_check_result = TUNE_GOOD;
goto out;
}
if (strlen(line) > 0) {
result = last_check_result = TUNE_GOOD;
goto out;
}
}
last_check_time = time(NULL);
};
result = last_check_result;
out:
previous_bytes = thisbytes;
if (file)
pclose(file);
close(fd);
return result;
}
void bt_tunable::toggle(void)
{
int good;
good = good_bad();
if (good == TUNE_GOOD) {
if(system("/usr/sbin/hciconfig hci0 up &> /dev/null &"))
printf("System is not available\n");
return;
}
if(system("/usr/sbin/hciconfig hci0 down &> /dev/null"))
printf("System is not available\n");
}
const char *bt_tunable::toggle_script(void)
{
int good;
good = good_bad();
if (good == TUNE_GOOD) {
return toggle_bad;
}
return toggle_good;
}
void add_bt_tunable(void)
{
struct hci_dev_info devinfo;
class bt_tunable *bt;
int fd;
int ret;
/* first check if /sys/modules/bluetooth exists, if not, don't probe bluetooth because
it would trigger an autoload */
// if (access("/sys/module/bluetooth",F_OK))
// return;
/* check if hci0 exists */
fd = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
if (fd < 0)
return;
memset(&devinfo, 0, sizeof(devinfo));
strcpy(devinfo.name, "hci0");
ret = ioctl(fd, HCIGETDEVINFO, (void *) &devinfo);
close(fd);
if (ret < 0)
return;
bt = new class bt_tunable();
all_tunables.push_back(bt);
}
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