From ac345813c4ac5a0e66261e9812f0fe94729c0eb2 Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Sun, 23 Feb 2014 12:44:25 -0800 Subject: [PATCH] Bluetooth: Expose current identity information in debugfs When using LE Privacy it is useful to know the local identity address, identity address type and identity resolving key. For debugging purposes add these information to debugfs. Signed-off-by: Marcel Holtmann Signed-off-by: Johan Hedberg --- net/bluetooth/hci_core.c | 42 ++++++++++++++++++++++++++++++++++++++-- 1 file changed, 40 insertions(+), 2 deletions(-) diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 1651de959d9c..80462a126ebd 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -579,6 +579,42 @@ static int sniff_max_interval_get(void *data, u64 *val) DEFINE_SIMPLE_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get, sniff_max_interval_set, "%llu\n"); +static int identity_show(struct seq_file *f, void *p) +{ + struct hci_dev *hdev = f->private; + bdaddr_t *addr; + u8 addr_type; + + hci_dev_lock(hdev); + + if (test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dev_flags) || + !bacmp(&hdev->bdaddr, BDADDR_ANY)) { + addr = &hdev->static_addr; + addr_type = ADDR_LE_DEV_RANDOM; + } else { + addr = &hdev->bdaddr; + addr_type = ADDR_LE_DEV_PUBLIC; + } + + seq_printf(f, "%pMR (type %u) %*phN\n", addr, addr_type, 16, hdev->irk); + + hci_dev_unlock(hdev); + + return 0; +} + +static int identity_open(struct inode *inode, struct file *file) +{ + return single_open(file, identity_show, inode->i_private); +} + +static const struct file_operations identity_fops = { + .open = identity_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + static int random_address_show(struct seq_file *f, void *p) { struct hci_dev *hdev = f->private; @@ -1624,12 +1660,14 @@ static int __hci_init(struct hci_dev *hdev) } if (lmp_le_capable(hdev)) { + debugfs_create_file("identity", 0400, hdev->debugfs, + hdev, &identity_fops); + debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, + hdev, &rpa_timeout_fops); debugfs_create_file("random_address", 0444, hdev->debugfs, hdev, &random_address_fops); debugfs_create_file("static_address", 0444, hdev->debugfs, hdev, &static_address_fops); - debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, - hdev, &rpa_timeout_fops); /* For controllers with a public address, provide a debug * option to force the usage of the configured static -- 2.39.5