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Bluetooth: Add hci_conn_lookup_type() helper function

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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: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann
2014-11-03 05:16:08 +01:00
committed by Johan Hedberg
parent 2cbd3f5ccd
commit 845472e8d5
2 changed files with 21 additions and 0 deletions
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1
include/net/bluetooth/hci.h
View File

@@ -274,6 +274,7 @@ enum {
/* Low Energy links do not have defined link type. Use invented one */ /* Low Energy links do not have defined link type. Use invented one */
#define LE_LINK 0x80 #define LE_LINK 0x80
#define AMP_LINK 0x81 #define AMP_LINK 0x81
#define INVALID_LINK 0xff
/* LMP features */ /* LMP features */
#define LMP_3SLOT 0x01 #define LMP_3SLOT 0x01

20
include/net/bluetooth/hci_core.h
View File

@@ -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; 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, static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
__u16 handle) __u16 handle)
{ {