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Commit 845472e8 authored by Marcel Holtmann's avatar Marcel Holtmann Committed by Johan Hedberg
Browse files

Bluetooth: Add hci_conn_lookup_type() helper function 



Some drivers require knowledge of what connection handle is assigned
to what connection link type (ACL or SCO/eSCO). Instead of having each
driver implement connection tracking, provide a simple helper function
for lookup of the link type.

Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: default avatarJohan Hedberg <johan.hedberg@intel.com>
parent 2cbd3f5c

include/net/bluetooth/hci.h

+1 −0
Original line number Diff line number Diff line
@@ -274,6 +274,7 @@ enum { 
/* Low Energy links do not have defined link type. Use invented one */

#define LE_LINK		0x80

#define AMP_LINK	0x81

#define INVALID_LINK	0xff



/* LMP features */

#define LMP_3SLOT	0x01

include/net/bluetooth/hci_core.h

+20 −0
Original line number Diff line number Diff line
@@ -646,6 +646,26 @@ static inline unsigned int hci_conn_count(struct hci_dev *hdev) 
	return c->acl_num + c->amp_num + c->sco_num + c->le_num;

}



static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)

{

	struct hci_conn_hash *h = &hdev->conn_hash;

	struct hci_conn *c;

	__u8 type = INVALID_LINK;



	rcu_read_lock();



	list_for_each_entry_rcu(c, &h->list, list) {

		if (c->handle == handle) {

			type = c->type;

			break;

		}

	}



	rcu_read_unlock();



	return type;

}



static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,

								__u16 handle)

{