lib/wlan/mlme/client/join_context.cpp

// Copyright 2018 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.

#include <wlan/common/channel.h>
#include <wlan/mlme/client/join_context.h>

namespace wlan {
JoinContext::JoinContext(::fuchsia::wlan::mlme::BSSDescription bss,
                         ::fuchsia::wlan::common::PHY phy, ::fuchsia::wlan::common::CBW cbw)
    : bss_(std::move(bss)) {
    bssid_ = common::MacAddr(bss_.bssid);
    bss_channel_ = wlan_channel_t{
        .primary = bss_.chan.primary,
        .cbw = static_cast<uint8_t>(bss_.chan.cbw),
    };

    // Discern join configuration from BSS announcement
    // Note primary channel can't be different.
    phy_ = common::FromFidl(phy);
    channel_ = bss_channel_;
    channel_.cbw = static_cast<uint8_t>(cbw);
    channel_ = SanitizeChannel(channel_);
}

wlan_channel_t JoinContext::SanitizeChannel(const wlan_channel_t& chan) {
    if (common::IsValidChan(chan)) { return chan; }

    wlan_channel_t chan_fallback = chan;
    chan_fallback.cbw = CBW20;
    errorf("Sanitize the invalid channel: %s to %s\n", common::ChanStrLong(chan).c_str(),
           common::ChanStrLong(chan_fallback).c_str());
    return chan_fallback;
}

}  // namespace wlan