| /* |
| * 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")); |
| strcpy(toggle_bad, "/usr/sbin/hciconfig hci0 up &> /dev/null &"); |
| 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; |
| 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; |
| pclose(file); |
| goto out; |
| } |
| |
| pclose(file); |
| 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; |
| close(fd); |
| return result; |
| } |
| |
| void bt_tunable::toggle(void) |
| { |
| int good; |
| good = good_bad(); |
| |
| if (good == TUNE_GOOD) { |
| system("/usr/sbin/hciconfig hci0 up &> /dev/null &"); |
| return; |
| } |
| system("/usr/sbin/hciconfig hci0 down &> /dev/null"); |
| } |
| |
| 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); |
| } |