Commit 6ec56613 authored by Tedd Ho-Jeong An's avatar Tedd Ho-Jeong An Committed by Marcel Holtmann
Browse files

Bluetooth: Add support hdev to allocate private data 



This patch adds support hdev to allocate extra size for private data.
The size of private data is specified in the hdev_alloc_size(priv_size)
and the allocated buffer can be accessed with hci_get_priv(hdev).

Signed-off-by: default avatarTedd Ho-Jeong An <tedd.an@intel.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 713baf3d

include/net/bluetooth/hci_core.h

+12 −1
Original line number Diff line number Diff line
@@ -1224,10 +1224,21 @@ static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 
	dev_set_drvdata(&hdev->dev, data);

}



static inline void *hci_get_priv(struct hci_dev *hdev)

{

	return (char *)hdev + sizeof(*hdev);

}



struct hci_dev *hci_dev_get(int index);

struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);



struct hci_dev *hci_alloc_dev(void);

struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);



static inline struct hci_dev *hci_alloc_dev(void)

{

	return hci_alloc_dev_priv(0);

}



void hci_free_dev(struct hci_dev *hdev);

int hci_register_dev(struct hci_dev *hdev);

void hci_unregister_dev(struct hci_dev *hdev);

net/bluetooth/hci_core.c

+10 −3
Original line number Diff line number Diff line
@@ -3751,11 +3751,18 @@ static int hci_suspend_notifier(struct notifier_block *nb, unsigned long action, 
}



/* Alloc HCI device */

struct hci_dev *hci_alloc_dev(void)

struct hci_dev *hci_alloc_dev_priv(int sizeof_priv)

{

	struct hci_dev *hdev;

	unsigned int alloc_size;



	hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);

	alloc_size = sizeof(*hdev);

	if (sizeof_priv) {

		/* Fixme: May need ALIGN-ment? */

		alloc_size += sizeof_priv;

	}



	hdev = kzalloc(alloc_size, GFP_KERNEL);

	if (!hdev)

		return NULL;
@@ -3869,7 +3876,7 @@ struct hci_dev *hci_alloc_dev(void) 


	return hdev;

}

EXPORT_SYMBOL(hci_alloc_dev);

EXPORT_SYMBOL(hci_alloc_dev_priv);



/* Free HCI device */

void hci_free_dev(struct hci_dev *hdev)