wlan_common/
data_writer.rs

Help
1// Copyright 2019 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5use crate::big_endian::BigEndianU16;
6use crate::mac::{self, FixedDataHdrFields, FrameControl, SequenceControl};
7use ieee80211::{Bssid, MacAddr};
8
9pub fn data_hdr_client_to_ap(
10    mut frame_ctrl: FrameControl,
11    bssid: Bssid,
12    client_addr: MacAddr,
13    seq_ctrl: SequenceControl,
14) -> FixedDataHdrFields {
15    frame_ctrl.set_to_ds(true);
16    frame_ctrl.set_from_ds(false);
17    FixedDataHdrFields {
18        frame_ctrl,
19        duration: 0,
20        addr1: bssid.into(),
21        addr2: client_addr,
22        addr3: bssid.into(),
23        seq_ctrl,
24    }
25}
26
27pub fn make_snap_llc_hdr(protocol_id: u16) -> mac::LlcHdr {
28    mac::LlcHdr {
29        dsap: mac::LLC_SNAP_EXTENSION,
30        ssap: mac::LLC_SNAP_EXTENSION,
31        control: mac::LLC_SNAP_UNNUMBERED_INFO,
32        oui: mac::LLC_SNAP_OUI,
33        protocol_id: BigEndianU16::from_native(protocol_id),
34    }
35}
36
37#[cfg(test)]
38mod tests {
39    use super::*;
40
41    #[test]
42    fn client_to_ap() {
43        let got = data_hdr_client_to_ap(
44            FrameControl(0b00110000_00110000),
45            Bssid::from([1; 6]),
46            MacAddr::from([2; 6]),
47            SequenceControl(4321),
48        );
49        let expected = FixedDataHdrFields {
50            frame_ctrl: FrameControl(0b00110001_00110000),
51            duration: 0,
52            addr1: MacAddr::from([1; 6]),
53            addr2: MacAddr::from([2; 6]),
54            addr3: MacAddr::from([1; 6]),
55            seq_ctrl: SequenceControl(4321),
56        };
57        assert_eq!(got, expected);
58    }
59}
wlan_common/data_writer.rs

wlan_common/
data_writer.rs
