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Commit b55d1abf authored by Jakub Pawlowski's avatar Jakub Pawlowski Committed by Marcel Holtmann
Browse files

Bluetooth: Expose quirks through debugfs 



This patch expose controller quirks through debugfs. It would be
useful for BlueZ tests using vhci. Currently there is no way to
test quirk dependent behaviour. It might be also useful for manual
testing.

Signed-off-by: default avatarJakub Pawlowski <jpawlowski@google.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent dc5d82a9

net/bluetooth/hci_debugfs.c

+60 −0
Original line number Diff line number Diff line
@@ -28,6 +28,54 @@ 


#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;			      \

	char buf[32];							      \

	size_t buf_size = min(count, (sizeof(buf) - 1));		      \

	bool enable;							      \

									      \

	if (test_bit(HCI_UP, &hdev->flags))				      \

		return -EBUSY;						      \

									      \

	if (copy_from_user(buf, user_buf, buf_size))			      \

		return -EFAULT;						      \

									      \

	buf[buf_size] = '\0';						      \

	if (strtobool(buf, &enable))					      \

		return -EINVAL;						      \

									      \

	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,				      \

}									      \



static int features_show(struct seq_file *f, void *ptr)

{

	struct hci_dev *hdev = f->private;
@@ -997,6 +1045,11 @@ static int adv_max_interval_get(void *data, u64 *val) 
DEFINE_SIMPLE_ATTRIBUTE(adv_max_interval_fops, adv_max_interval_get,

			adv_max_interval_set, "%llu\n");



DEFINE_QUIRK_ATTRIBUTE(quirk_strict_duplicate_filter,

		       HCI_QUIRK_STRICT_DUPLICATE_FILTER);

DEFINE_QUIRK_ATTRIBUTE(quirk_simultaneous_discovery,

		       HCI_QUIRK_SIMULTANEOUS_DISCOVERY);



void hci_debugfs_create_le(struct hci_dev *hdev)

{

	debugfs_create_file("identity", 0400, hdev->debugfs, hdev,
@@ -1041,6 +1094,13 @@ void hci_debugfs_create_le(struct hci_dev *hdev) 
			    &adv_max_interval_fops);

	debugfs_create_u16("discov_interleaved_timeout", 0644, hdev->debugfs,

			   &hdev->discov_interleaved_timeout);



	debugfs_create_file("quirk_strict_duplicate_filter", 0644,

			    hdev->debugfs, hdev,

			    &quirk_strict_duplicate_filter_fops);

	debugfs_create_file("quirk_simultaneous_discovery", 0644,

			    hdev->debugfs, hdev,

			    &quirk_simultaneous_discovery_fops);

}



void hci_debugfs_create_conn(struct hci_conn *conn)