[PATCH 06/11] Bluetooth: hci: Introduce hci_acl_handle() and hci_acl_dlen() helpers

Introduce both helpers for ACL packet since:

both core and transport drivers extract the handle and data length
from its header in several places.

Both will be used later.

Signed-off-by: Zijun Hu <[email protected]>
---
 include/net/bluetooth/hci.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 50f0eef71fb1..d557bdf9ae57 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -3402,16 +3402,26 @@ static inline struct hci_iso_hdr *hci_iso_hdr(const struct sk_buff *skb)
 #define hci_opcode_ogf(op)		(op >> 10)
 #define hci_opcode_ocf(op)		(op & 0x03ff)
 
 /* ACL handle and flags pack/unpack */
 #define hci_handle_pack(h, f)	((__u16) ((h & 0x0fff)|(f << 12)))
 #define hci_handle(h)		(h & 0x0fff)
 #define hci_flags(h)		(h >> 12)
 
+static inline __u16 hci_acl_handle(const struct sk_buff *skb)
+{
+	return hci_handle(__le16_to_cpu(hci_acl_hdr(skb)->handle));
+}
+
+static inline __u16 hci_acl_dlen(const struct sk_buff *skb)
+{
+	return __le16_to_cpu(hci_acl_hdr(skb)->dlen);
+}
+
 /* ISO handle and flags pack/unpack */
 #define hci_iso_flags_pb(f)		(f & 0x0003)
 #define hci_iso_flags_ts(f)		((f >> 2) & 0x0001)
 #define hci_iso_flags_pack(pb, ts)	((pb & 0x03) | ((ts & 0x01) << 2))
 
 /* ISO data length and flags pack/unpack */
 #define hci_iso_data_len_pack(h, f)	((__u16) (((h) & 0x0fff) | \
 						  (((f) & 0x3) << 14)))

-- 
2.34.1