1 files changed, 88 insertions, 37 deletions

diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index 2bc6f6a8de68..0e8e1a59856c 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -1,13 +1,18 @@
 /* Bluetooth HCI driver model support. */
 
 #include <linux/kernel.h>
+#include <linux/slab.h>
 #include <linux/init.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
 
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
 
-struct class *bt_class = NULL;
-EXPORT_SYMBOL_GPL(bt_class);
+static struct class *bt_class;
+
+struct dentry *bt_debugfs = NULL;
+EXPORT_SYMBOL_GPL(bt_debugfs);
 
 static struct workqueue_struct *bt_workq;
 
@@ -166,9 +171,9 @@ void hci_conn_del_sysfs(struct hci_conn *conn)
         queue_work(bt_workq, &conn->work_del);
 }
 
-static inline char *host_typetostr(int type)
+static inline char *host_bustostr(int bus)
 {
-        switch (type) {
+        switch (bus) {
         case HCI_VIRTUAL:
                 return "VIRTUAL";
         case HCI_USB:
@@ -188,10 +193,28 @@ static inline char *host_typetostr(int type)
         }
 }
 
+static inline char *host_typetostr(int type)
+{
+        switch (type) {
+        case HCI_BREDR:
+                return "BR/EDR";
+        case HCI_80211:
+                return "802.11";
+        default:
+                return "UNKNOWN";
+        }
+}
+
+static ssize_t show_bus(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct hci_dev *hdev = dev_get_drvdata(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 = dev_get_drvdata(dev);
-        return sprintf(buf, "%s\n", host_typetostr(hdev->type));
+        return sprintf(buf, "%s\n", host_typetostr(hdev->dev_type));
 }
 
 static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf)
@@ -251,32 +274,6 @@ static ssize_t show_hci_revision(struct device *dev, struct device_attribute *at
         return sprintf(buf, "%d\n", hdev->hci_rev);
 }
 
-static ssize_t show_inquiry_cache(struct device *dev, struct device_attribute *attr, char *buf)
-{
-        struct hci_dev *hdev = dev_get_drvdata(dev);
-        struct inquiry_cache *cache = &hdev->inq_cache;
-        struct inquiry_entry *e;
-        int n = 0;
-
-        hci_dev_lock_bh(hdev);
-
-        for (e = cache->list; e; e = e->next) {
-                struct inquiry_data *data = &e->data;
-                bdaddr_t bdaddr;
-                baswap(&bdaddr, &data->bdaddr);
-                n += sprintf(buf + n, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
-                                batostr(&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_bh(hdev);
-        return n;
-}
-
 static ssize_t show_idle_timeout(struct device *dev, struct device_attribute *attr, char *buf)
 {
         struct hci_dev *hdev = dev_get_drvdata(dev);
@@ -355,6 +352,7 @@ static ssize_t store_sniff_min_interval(struct device *dev, struct device_attrib
         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);
@@ -363,7 +361,6 @@ 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(inquiry_cache, S_IRUGO, show_inquiry_cache, NULL);
 
 static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR,
                                 show_idle_timeout, store_idle_timeout);
@@ -373,6 +370,7 @@ 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,
@@ -381,7 +379,6 @@ static struct attribute *bt_host_attrs[] = {
         &dev_attr_manufacturer.attr,
         &dev_attr_hci_version.attr,
         &dev_attr_hci_revision.attr,
-        &dev_attr_inquiry_cache.attr,
         &dev_attr_idle_timeout.attr,
         &dev_attr_sniff_max_interval.attr,
         &dev_attr_sniff_min_interval.attr,
@@ -409,12 +406,50 @@ static struct device_type bt_host = {
         .release = bt_host_release,
 };
 
+static int inquiry_cache_show(struct seq_file *f, void *p)
+{
+        struct hci_dev *hdev = f->private;
+        struct inquiry_cache *cache = &hdev->inq_cache;
+        struct inquiry_entry *e;
+
+        hci_dev_lock_bh(hdev);
+
+        for (e = cache->list; e; e = e->next) {
+                struct inquiry_data *data = &e->data;
+                bdaddr_t bdaddr;
+                baswap(&bdaddr, &data->bdaddr);
+                seq_printf(f, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
+                           batostr(&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_bh(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,
+};
+
 int hci_register_sysfs(struct hci_dev *hdev)
 {
         struct device *dev = &hdev->dev;
         int err;
 
-        BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
+        BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);
 
         dev->type = &bt_host;
         dev->class = bt_class;
@@ -428,12 +463,24 @@ int hci_register_sysfs(struct hci_dev *hdev)
         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);
+
         return 0;
 }
 
 void hci_unregister_sysfs(struct hci_dev *hdev)
 {
-        BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
+        BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);
+
+        debugfs_remove_recursive(hdev->debugfs);
 
         device_del(&hdev->dev);
 }
@@ -444,6 +491,8 @@ int __init bt_sysfs_init(void)
         if (!bt_workq)
                 return -ENOMEM;
 
+        bt_debugfs = debugfs_create_dir("bluetooth", NULL);
+
         bt_class = class_create(THIS_MODULE, "bluetooth");
         if (IS_ERR(bt_class)) {
                 destroy_workqueue(bt_workq);
@@ -455,7 +504,9 @@ int __init bt_sysfs_init(void)
 
 void bt_sysfs_cleanup(void)
 {
-        destroy_workqueue(bt_workq);
-
         class_destroy(bt_class);
+
+        debugfs_remove_recursive(bt_debugfs);
+
+        destroy_workqueue(bt_workq);
 }