Bluetooth: Refactor HCI connection code

hci_connect() is a very simple and useless wrapper of hci_connect_acl
and hci_connect_le functions. Addtionally, all places where hci_connect
is called the link type value is passed explicitly. This way, we can
safely delete hci_connect, declare hci_connect_acl and hci_connect_le
in hci_core.h and call them directly.

No functionality is changed by this patch.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

include/net/bluetooth/hci_core.h

@@ -641,8 +641,10 @@ void hci_chan_del(struct hci_chan *chan);
 void hci_chan_list_flush(struct hci_conn *conn);
 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
 
-struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
-			     __u8 dst_type, __u8 sec_level, __u8 auth_type);
+struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
+				u8 dst_type, u8 sec_level, u8 auth_type);
+struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
+				 u8 sec_level, u8 auth_type);
 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
 				 __u16 setting);
 int hci_conn_check_link_mode(struct hci_conn *conn);

net/bluetooth/hci_conn.c

@@ -624,7 +624,7 @@ static void stop_scan_complete(struct hci_dev *hdev, u8 status)
 	}
 }
 
-static struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
+struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
 				u8 dst_type, u8 sec_level, u8 auth_type)
 {
 	struct hci_conn_params *params;
@@ -729,7 +729,7 @@ static struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
 	return conn;
 }
 
-static struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
+struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
 				 u8 sec_level, u8 auth_type)
 {
 	struct hci_conn *acl;
@@ -799,22 +799,6 @@ struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
 	return sco;
 }
 
-/* Create SCO, ACL or LE connection. */
-struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
-			     __u8 dst_type, __u8 sec_level, __u8 auth_type)
-{
-	BT_DBG("%s dst %pMR type 0x%x", hdev->name, dst, type);
-
-	switch (type) {
-	case LE_LINK:
-		return hci_connect_le(hdev, dst, dst_type, sec_level, auth_type);
-	case ACL_LINK:
-		return hci_connect_acl(hdev, dst, sec_level, auth_type);
-	}
-
-	return ERR_PTR(-EINVAL);
-}
-
 /* Check link security requirement */
 int hci_conn_check_link_mode(struct hci_conn *conn)
 {

net/bluetooth/l2cap_core.c

@@ -7109,11 +7109,10 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
 	auth_type = l2cap_get_auth_type(chan);
 
 	if (bdaddr_type_is_le(dst_type))
-		hcon = hci_connect(hdev, LE_LINK, dst, dst_type,
-				   chan->sec_level, auth_type);
+		hcon = hci_connect_le(hdev, dst, dst_type, chan->sec_level,
+				      auth_type);
 	else
-		hcon = hci_connect(hdev, ACL_LINK, dst, dst_type,
-				   chan->sec_level, auth_type);
+		hcon = hci_connect_acl(hdev, dst, chan->sec_level, auth_type);
 
 	if (IS_ERR(hcon)) {
 		err = PTR_ERR(hcon);

net/bluetooth/mgmt.c

@@ -2816,11 +2816,11 @@ static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
 		auth_type = HCI_AT_DEDICATED_BONDING_MITM;
 
 	if (cp->addr.type == BDADDR_BREDR)
-		conn = hci_connect(hdev, ACL_LINK, &cp->addr.bdaddr,
-				   cp->addr.type, sec_level, auth_type);
+		conn = hci_connect_acl(hdev, &cp->addr.bdaddr, sec_level,
+				       auth_type);
 	else
-		conn = hci_connect(hdev, LE_LINK, &cp->addr.bdaddr,
-				   cp->addr.type, sec_level, auth_type);
+		conn = hci_connect_le(hdev, &cp->addr.bdaddr, cp->addr.type,
+				      sec_level, auth_type);
 
 	if (IS_ERR(conn)) {
 		int status;