path: root/net/bluetooth/hci_debugfs.c

/*
   BlueZ - Bluetooth protocol stack for Linux

   Copyright (C) 2014 Intel Corporation

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License version 2 as
   published by the Free Software Foundation;

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
   SOFTWARE IS DISCLAIMED.
*/

#include <linux/debugfs.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>

#include "smp.h"
#include "hci_debugfs.h"

#define DEFINE_QUIRK_ATTRIBUTE(__name, __quirk)				      \
static ssize_t __name ## _read(struct file *file,			      \
				char __user *user_buf,			      \
				size_t count, loff_t *ppos)		      \
{									      \
	struct hci_dev *hdev = file->private_data;			      \
	char buf[3];							      \
									      \
	buf[0] = test_bit(__quirk, &hdev->quirks) ? 'Y' : 'N';		      \
	buf[1] = '\n';							      \
	buf[2] = '\0';							      \
	return simple_read_from_buffer(user_buf, count, ppos, buf, 2);	      \
}									      \
									      \
static ssize_t __name ## _write(struct file *file,			      \
				 const char __user *user_buf,		      \
				 size_t count, loff_t *ppos)		      \
{									      \
	struct hci_dev *hdev = file->private_data;			      \
	bool enable;							      \
	int err;							      \
									      \
	if (test_bit(HCI_UP, &hdev->flags))				      \
		return -EBUSY;						      \
									      \
	err = kstrtobool_from_user(user_buf, count, &enable);		      \
	if (err)							      \
		return err;						      \
									      \
	if (enable == test_bit(__quirk, &hdev->quirks))			      \
		return -EALREADY;					      \
									      \
	change_bit(__quirk, &hdev->quirks);				      \
									      \
	return count;							      \
}									      \
									      \
static const struct file_operations __name ## _fops = {			      \
	.open		= simple_open,					      \
	.read		= __name ## _read,				      \
	.write		= __name ## _write,				      \
	.llseek		= default_llseek,				      \
}									      \

#define DEFINE_INFO_ATTRIBUTE(__name, __field)				      \
static int __name ## _show(struct seq_file *f, void *ptr)		      \
{									      \
	struct hci_dev *hdev = f->private;				      \
									      \
	hci_dev_lock(hdev);						      \
	seq_printf(f, "%s\n", hdev->__field ? : "");			      \
	hci_dev_unlock(hdev);						      \
									      \
	return 0;							      \
}									      \
									      \
DEFINE_SHOW_ATTRIBUTE(__name)

static int features_show(struct seq_file *f, void *ptr)
{
	struct hci_dev *hdev = f->private;
	u8 p;

	hci_dev_lock(hdev);
	for (p = 0; p < HCI_MAX_PAGES && p <= hdev->max_page; p++)
		seq_printf(f, "%2u: %8ph\n", p, hdev->features[p]);
	if (lmp_le_capable(hdev))
		seq_printf(f, "LE: %8ph\n", hdev->le_features);
	hci_dev_unlock(hdev);

	return 0;
}

DEFINE_SHOW_ATTRIBUTE(features);

static int device_id_show(struct seq_file *f, void *ptr)
{
	struct hci_dev *hdev = f->private;

	hci_dev_lock(hdev);
	seq_printf(f, "%4.4x:%4.4x:%4.4x:%4.4x\n", hdev->devid_source,
		  hdev->devid_vendor, hdev->devid_product, hdev->devid_version);
	hci_dev_unlock(hdev);

	return 0;
}

DEFINE_SHOW_ATTRIBUTE(device_id);

static int device_list_show(struct seq_file *f, void *ptr)
{
	struct hci_dev *hdev = f->private;
	struct hci_conn_params *p;
	struct bdaddr_list *b;

	hci_dev_lock(hdev);
	list_for_each_entry(b, &hdev->accept_list, list)
		seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
	list_for_each_entry(p, &hdev->le_conn_params, list) {
		seq_printf(f, "%pMR (type %u) %u\n", &p->addr, p->addr_type,
			   p->auto_connect);
	}
	hci_dev_unlock(hdev);

	return 0;
}

DEFINE_SHOW_ATTRIBUTE(device_list);

static int blacklist_show(struct seq_file *f, <