mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 09:19:51 +00:00
![Andrei Emeltchenko](/assets/img/avatar_default.png)
Instead of old unsafe batostr function use %pMR print specifier for printing Bluetooth addresses in sprintf and seq_printf statements. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
604 lines
13 KiB
C
604 lines
13 KiB
C
/* Bluetooth HCI driver model support. */
|
|
|
|
#include <linux/debugfs.h>
|
|
#include <linux/module.h>
|
|
|
|
#include <net/bluetooth/bluetooth.h>
|
|
#include <net/bluetooth/hci_core.h>
|
|
|
|
static struct class *bt_class;
|
|
|
|
struct dentry *bt_debugfs;
|
|
EXPORT_SYMBOL_GPL(bt_debugfs);
|
|
|
|
static inline char *link_typetostr(int type)
|
|
{
|
|
switch (type) {
|
|
case ACL_LINK:
|
|
return "ACL";
|
|
case SCO_LINK:
|
|
return "SCO";
|
|
case ESCO_LINK:
|
|
return "eSCO";
|
|
case LE_LINK:
|
|
return "LE";
|
|
default:
|
|
return "UNKNOWN";
|
|
}
|
|
}
|
|
|
|
static ssize_t show_link_type(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct hci_conn *conn = to_hci_conn(dev);
|
|
return sprintf(buf, "%s\n", link_typetostr(conn->type));
|
|
}
|
|
|
|
static ssize_t show_link_address(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct hci_conn *conn = to_hci_conn(dev);
|
|
return sprintf(buf, "%pMR\n", &conn->dst);
|
|
}
|
|
|
|
static ssize_t show_link_features(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct hci_conn *conn = to_hci_conn(dev);
|
|
|
|
return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
|
|
conn->features[0], conn->features[1],
|
|
conn->features[2], conn->features[3],
|
|
conn->features[4], conn->features[5],
|
|
conn->features[6], conn->features[7]);
|
|
}
|
|
|
|
#define LINK_ATTR(_name, _mode, _show, _store) \
|
|
struct device_attribute link_attr_##_name = __ATTR(_name, _mode, _show, _store)
|
|
|
|
static LINK_ATTR(type, S_IRUGO, show_link_type, NULL);
|
|
static LINK_ATTR(address, S_IRUGO, show_link_address, NULL);
|
|
static LINK_ATTR(features, S_IRUGO, show_link_features, NULL);
|
|
|
|
static struct attribute *bt_link_attrs[] = {
|
|
&link_attr_type.attr,
|
|
&link_attr_address.attr,
|
|
&link_attr_features.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute_group bt_link_group = {
|
|
.attrs = bt_link_attrs,
|
|
};
|
|
|
|
static const struct attribute_group *bt_link_groups[] = {
|
|
&bt_link_group,
|
|
NULL
|
|
};
|
|
|
|
static void bt_link_release(struct device *dev)
|
|
{
|
|
struct hci_conn *conn = to_hci_conn(dev);
|
|
kfree(conn);
|
|
}
|
|
|
|
static struct device_type bt_link = {
|
|
.name = "link",
|
|
.groups = bt_link_groups,
|
|
.release = bt_link_release,
|
|
};
|
|
|
|
/*
|
|
* The rfcomm tty device will possibly retain even when conn
|
|
* is down, and sysfs doesn't support move zombie device,
|
|
* so we should move the device before conn device is destroyed.
|
|
*/
|
|
static int __match_tty(struct device *dev, void *data)
|
|
{
|
|
return !strncmp(dev_name(dev), "rfcomm", 6);
|
|
}
|
|
|
|
void hci_conn_init_sysfs(struct hci_conn *conn)
|
|
{
|
|
struct hci_dev *hdev = conn->hdev;
|
|
|
|
BT_DBG("conn %p", conn);
|
|
|
|
conn->dev.type = &bt_link;
|
|
conn->dev.class = bt_class;
|
|
conn->dev.parent = &hdev->dev;
|
|
|
|
device_initialize(&conn->dev);
|
|
}
|
|
|
|
void hci_conn_add_sysfs(struct hci_conn *conn)
|
|
{
|
|
struct hci_dev *hdev = conn->hdev;
|
|
|
|
BT_DBG("conn %p", conn);
|
|
|
|
dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle);
|
|
|
|
if (device_add(&conn->dev) < 0) {
|
|
BT_ERR("Failed to register connection device");
|
|
return;
|
|
}
|
|
|
|
hci_dev_hold(hdev);
|
|
}
|
|
|
|
void hci_conn_del_sysfs(struct hci_conn *conn)
|
|
{
|
|
struct hci_dev *hdev = conn->hdev;
|
|
|
|
if (!device_is_registered(&conn->dev))
|
|
return;
|
|
|
|
while (1) {
|
|
struct device *dev;
|
|
|
|
dev = device_find_child(&conn->dev, NULL, __match_tty);
|
|
if (!dev)
|
|
break;
|
|
device_move(dev, NULL, DPM_ORDER_DEV_LAST);
|
|
put_device(dev);
|
|
}
|
|
|
|
device_del(&conn->dev);
|
|
put_device(&conn->dev);
|
|
|
|
hci_dev_put(hdev);
|
|
}
|
|
|
|
static inline char *host_bustostr(int bus)
|
|
{
|
|
switch (bus) {
|
|
case HCI_VIRTUAL:
|
|
return "VIRTUAL";
|
|
case HCI_USB:
|
|
return "USB";
|
|
case HCI_PCCARD:
|
|
return "PCCARD";
|
|
case HCI_UART:
|
|
return "UART";
|
|
case HCI_RS232:
|
|
return "RS232";
|
|
case HCI_PCI:
|
|
return "PCI";
|
|
case HCI_SDIO:
|
|
return "SDIO";
|
|
default:
|
|
return "UNKNOWN";
|
|
}
|
|
}
|
|
|
|
static inline char *host_typetostr(int type)
|
|
{
|
|
switch (type) {
|
|
case HCI_BREDR:
|
|
return "BR/EDR";
|
|
case HCI_AMP:
|
|
return "AMP";
|
|
default:
|
|
return "UNKNOWN";
|
|
}
|
|
}
|
|
|
|
static ssize_t show_bus(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct hci_dev *hdev = to_hci_dev(dev);
|
|
return sprintf(buf, "%s\n", host_bustostr(hdev->bus));
|
|
}
|
|
|
|
static ssize_t show_type(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct hci_dev *hdev = to_hci_dev(dev);
|
|
return sprintf(buf, "%s\n", host_typetostr(hdev->dev_type));
|
|
}
|
|
|
|
static ssize_t show_name(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct hci_dev *hdev = to_hci_dev(dev);
|
|
char name[HCI_MAX_NAME_LENGTH + 1];
|
|
int i;
|
|
|
|
for (i = 0; i < HCI_MAX_NAME_LENGTH; i++)
|
|
name[i] = hdev->dev_name[i];
|
|
|
|
name[HCI_MAX_NAME_LENGTH] = '\0';
|
|
return sprintf(buf, "%s\n", name);
|
|
}
|
|
|
|
static ssize_t show_class(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct hci_dev *hdev = to_hci_dev(dev);
|
|
return sprintf(buf, "0x%.2x%.2x%.2x\n", hdev->dev_class[2],
|
|
hdev->dev_class[1], hdev->dev_class[0]);
|
|
}
|
|
|
|
static ssize_t show_address(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct hci_dev *hdev = to_hci_dev(dev);
|
|
return sprintf(buf, "%pMR\n", &hdev->bdaddr);
|
|
}
|
|
|
|
static ssize_t show_features(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct hci_dev *hdev = to_hci_dev(dev);
|
|
|
|
return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
|
|
hdev->features[0], hdev->features[1],
|
|
hdev->features[2], hdev->features[3],
|
|
hdev->features[4], hdev->features[5],
|
|
hdev->features[6], hdev->features[7]);
|
|
}
|
|
|
|
static ssize_t show_manufacturer(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct hci_dev *hdev = to_hci_dev(dev);
|
|
return sprintf(buf, "%d\n", hdev->manufacturer);
|
|
}
|
|
|
|
static ssize_t show_hci_version(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct hci_dev *hdev = to_hci_dev(dev);
|
|
return sprintf(buf, "%d\n", hdev->hci_ver);
|
|
}
|
|
|
|
static ssize_t show_hci_revision(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct hci_dev *hdev = to_hci_dev(dev);
|
|
return sprintf(buf, "%d\n", hdev->hci_rev);
|
|
}
|
|
|
|
static ssize_t show_idle_timeout(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct hci_dev *hdev = to_hci_dev(dev);
|
|
return sprintf(buf, "%d\n", hdev->idle_timeout);
|
|
}
|
|
|
|
static ssize_t store_idle_timeout(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct hci_dev *hdev = to_hci_dev(dev);
|
|
unsigned int val;
|
|
int rv;
|
|
|
|
rv = kstrtouint(buf, 0, &val);
|
|
if (rv < 0)
|
|
return rv;
|
|
|
|
if (val != 0 && (val < 500 || val > 3600000))
|
|
return -EINVAL;
|
|
|
|
hdev->idle_timeout = val;
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_sniff_max_interval(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct hci_dev *hdev = to_hci_dev(dev);
|
|
return sprintf(buf, "%d\n", hdev->sniff_max_interval);
|
|
}
|
|
|
|
static ssize_t store_sniff_max_interval(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct hci_dev *hdev = to_hci_dev(dev);
|
|
u16 val;
|
|
int rv;
|
|
|
|
rv = kstrtou16(buf, 0, &val);
|
|
if (rv < 0)
|
|
return rv;
|
|
|
|
if (val == 0 || val % 2 || val < hdev->sniff_min_interval)
|
|
return -EINVAL;
|
|
|
|
hdev->sniff_max_interval = val;
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_sniff_min_interval(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct hci_dev *hdev = to_hci_dev(dev);
|
|
return sprintf(buf, "%d\n", hdev->sniff_min_interval);
|
|
}
|
|
|
|
static ssize_t store_sniff_min_interval(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct hci_dev *hdev = to_hci_dev(dev);
|
|
u16 val;
|
|
int rv;
|
|
|
|
rv = kstrtou16(buf, 0, &val);
|
|
if (rv < 0)
|
|
return rv;
|
|
|
|
if (val == 0 || val % 2 || val > hdev->sniff_max_interval)
|
|
return -EINVAL;
|
|
|
|
hdev->sniff_min_interval = val;
|
|
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(bus, S_IRUGO, show_bus, NULL);
|
|
static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
|
|
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
|
|
static DEVICE_ATTR(class, S_IRUGO, show_class, NULL);
|
|
static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
|
|
static DEVICE_ATTR(features, S_IRUGO, show_features, NULL);
|
|
static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL);
|
|
static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL);
|
|
static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL);
|
|
|
|
static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR,
|
|
show_idle_timeout, store_idle_timeout);
|
|
static DEVICE_ATTR(sniff_max_interval, S_IRUGO | S_IWUSR,
|
|
show_sniff_max_interval, store_sniff_max_interval);
|
|
static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR,
|
|
show_sniff_min_interval, store_sniff_min_interval);
|
|
|
|
static struct attribute *bt_host_attrs[] = {
|
|
&dev_attr_bus.attr,
|
|
&dev_attr_type.attr,
|
|
&dev_attr_name.attr,
|
|
&dev_attr_class.attr,
|
|
&dev_attr_address.attr,
|
|
&dev_attr_features.attr,
|
|
&dev_attr_manufacturer.attr,
|
|
&dev_attr_hci_version.attr,
|
|
&dev_attr_hci_revision.attr,
|
|
&dev_attr_idle_timeout.attr,
|
|
&dev_attr_sniff_max_interval.attr,
|
|
&dev_attr_sniff_min_interval.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute_group bt_host_group = {
|
|
.attrs = bt_host_attrs,
|
|
};
|
|
|
|
static const struct attribute_group *bt_host_groups[] = {
|
|
&bt_host_group,
|
|
NULL
|
|
};
|
|
|
|
static void bt_host_release(struct device *dev)
|
|
{
|
|
struct hci_dev *hdev = to_hci_dev(dev);
|
|
kfree(hdev);
|
|
module_put(THIS_MODULE);
|
|
}
|
|
|
|
static struct device_type bt_host = {
|
|
.name = "host",
|
|
.groups = bt_host_groups,
|
|
.release = bt_host_release,
|
|
};
|
|
|
|
static int inquiry_cache_show(struct seq_file *f, void *p)
|
|
{
|
|
struct hci_dev *hdev = f->private;
|
|
struct discovery_state *cache = &hdev->discovery;
|
|
struct inquiry_entry *e;
|
|
|
|
hci_dev_lock(hdev);
|
|
|
|
list_for_each_entry(e, &cache->all, all) {
|
|
struct inquiry_data *data = &e->data;
|
|
seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
|
|
&data->bdaddr,
|
|
data->pscan_rep_mode, data->pscan_period_mode,
|
|
data->pscan_mode, data->dev_class[2],
|
|
data->dev_class[1], data->dev_class[0],
|
|
__le16_to_cpu(data->clock_offset),
|
|
data->rssi, data->ssp_mode, e->timestamp);
|
|
}
|
|
|
|
hci_dev_unlock(hdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int inquiry_cache_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, inquiry_cache_show, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations inquiry_cache_fops = {
|
|
.open = inquiry_cache_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static int blacklist_show(struct seq_file *f, void *p)
|
|
{
|
|
struct hci_dev *hdev = f->private;
|
|
struct bdaddr_list *b;
|
|
|
|
hci_dev_lock(hdev);
|
|
|
|
list_for_each_entry(b, &hdev->blacklist, list)
|
|
seq_printf(f, "%pMR\n", &b->bdaddr);
|
|
|
|
hci_dev_unlock(hdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int blacklist_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, blacklist_show, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations blacklist_fops = {
|
|
.open = blacklist_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static void print_bt_uuid(struct seq_file *f, u8 *uuid)
|
|
{
|
|
__be32 data0, data4;
|
|
__be16 data1, data2, data3, data5;
|
|
|
|
memcpy(&data0, &uuid[0], 4);
|
|
memcpy(&data1, &uuid[4], 2);
|
|
memcpy(&data2, &uuid[6], 2);
|
|
memcpy(&data3, &uuid[8], 2);
|
|
memcpy(&data4, &uuid[10], 4);
|
|
memcpy(&data5, &uuid[14], 2);
|
|
|
|
seq_printf(f, "%.8x-%.4x-%.4x-%.4x-%.8x%.4x\n",
|
|
ntohl(data0), ntohs(data1), ntohs(data2), ntohs(data3),
|
|
ntohl(data4), ntohs(data5));
|
|
}
|
|
|
|
static int uuids_show(struct seq_file *f, void *p)
|
|
{
|
|
struct hci_dev *hdev = f->private;
|
|
struct bt_uuid *uuid;
|
|
|
|
hci_dev_lock(hdev);
|
|
|
|
list_for_each_entry(uuid, &hdev->uuids, list)
|
|
print_bt_uuid(f, uuid->uuid);
|
|
|
|
hci_dev_unlock(hdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int uuids_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, uuids_show, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations uuids_fops = {
|
|
.open = uuids_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static int auto_accept_delay_set(void *data, u64 val)
|
|
{
|
|
struct hci_dev *hdev = data;
|
|
|
|
hci_dev_lock(hdev);
|
|
|
|
hdev->auto_accept_delay = val;
|
|
|
|
hci_dev_unlock(hdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int auto_accept_delay_get(void *data, u64 *val)
|
|
{
|
|
struct hci_dev *hdev = data;
|
|
|
|
hci_dev_lock(hdev);
|
|
|
|
*val = hdev->auto_accept_delay;
|
|
|
|
hci_dev_unlock(hdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
|
|
auto_accept_delay_set, "%llu\n");
|
|
|
|
void hci_init_sysfs(struct hci_dev *hdev)
|
|
{
|
|
struct device *dev = &hdev->dev;
|
|
|
|
dev->type = &bt_host;
|
|
dev->class = bt_class;
|
|
|
|
__module_get(THIS_MODULE);
|
|
device_initialize(dev);
|
|
}
|
|
|
|
int hci_add_sysfs(struct hci_dev *hdev)
|
|
{
|
|
struct device *dev = &hdev->dev;
|
|
int err;
|
|
|
|
BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);
|
|
|
|
dev_set_name(dev, "%s", hdev->name);
|
|
|
|
err = device_add(dev);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
if (!bt_debugfs)
|
|
return 0;
|
|
|
|
hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs);
|
|
if (!hdev->debugfs)
|
|
return 0;
|
|
|
|
debugfs_create_file("inquiry_cache", 0444, hdev->debugfs,
|
|
hdev, &inquiry_cache_fops);
|
|
|
|
debugfs_create_file("blacklist", 0444, hdev->debugfs,
|
|
hdev, &blacklist_fops);
|
|
|
|
debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
|
|
|
|
debugfs_create_file("auto_accept_delay", 0444, hdev->debugfs, hdev,
|
|
&auto_accept_delay_fops);
|
|
return 0;
|
|
}
|
|
|
|
void hci_del_sysfs(struct hci_dev *hdev)
|
|
{
|
|
BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);
|
|
|
|
debugfs_remove_recursive(hdev->debugfs);
|
|
|
|
device_del(&hdev->dev);
|
|
}
|
|
|
|
int __init bt_sysfs_init(void)
|
|
{
|
|
bt_debugfs = debugfs_create_dir("bluetooth", NULL);
|
|
|
|
bt_class = class_create(THIS_MODULE, "bluetooth");
|
|
if (IS_ERR(bt_class))
|
|
return PTR_ERR(bt_class);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void bt_sysfs_cleanup(void)
|
|
{
|
|
class_destroy(bt_class);
|
|
|
|
debugfs_remove_recursive(bt_debugfs);
|
|
}
|