| // Copyright 2019 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. |
| |
| #ifndef SRC_CONNECTIVITY_BLUETOOTH_CORE_BT_HOST_L2CAP_FCS_H_ |
| #define SRC_CONNECTIVITY_BLUETOOTH_CORE_BT_HOST_L2CAP_FCS_H_ |
| |
| #include <cstddef> |
| |
| #include "src/connectivity/bluetooth/core/bt-host/common/byte_buffer.h" |
| #include "src/connectivity/bluetooth/core/bt-host/l2cap/l2cap_defs.h" |
| |
| namespace bt::l2cap { |
| |
| // Computes the Frame Check Sequence (FCS) over the bytes in |view| per Core Spec v5.0, Vol 3, Part |
| // A, Section 3.3.5. |initial_value| may be kInitialFcsValue to begin a new FCS computation or the |
| // result of FCS computation over a contiguous sequence immediately preceding |view|. If |view| has |
| // length zero, returns |initial_value|. |
| [[nodiscard]] FrameCheckSequence ComputeFcs(BufferView view, |
| FrameCheckSequence initial_value = kInitialFcsValue); |
| |
| } // namespace bt::l2cap |
| |
| #endif // SRC_CONNECTIVITY_BLUETOOTH_CORE_BT_HOST_L2CAP_FCS_H_ |
