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@xxxxxxxxxxxx>
---
include/net/bluetooth/hci.h | 1 +
include/net/bluetooth/hci_core.h | 20 ++++++++++++++++++++
2 files changed, 21 insertions(+)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 2e08f5a89463..d5f85d7746bc 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -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
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 27ddb905b351..4e39a5adfcab 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -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)
{
--
1.9.3
--
To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
