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re enabled 5ghz wifi hotspot with globally compliant 5ghz channel.

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This commit is contained in:
Lasan Mahaliyana
2026-03-12 00:16:59 +05:30
parent 67ec926cf4
commit 9ed7c2ab40
1 changed files with 32 additions and 14 deletions
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internal/platform/implementation/linux/wifi_hotspot.cc
+32 -14
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@@ -32,6 +32,15 @@
namespace nearby {
namespace linux {
namespace {
// Prefer non-DFS channels that are broadly available in the 00 (world) regulatory
// domain for AP mode.
constexpr int kPreferred24GhzChannel = 6;
constexpr int kPreferred5GhzChannel = 40;
} // namespace
std::unique_ptr<api::WifiHotspotSocket>
NetworkManagerWifiHotspotMedium::ConnectToService(
absl::string_view ip_address, int port,
@@ -147,20 +156,28 @@ bool NetworkManagerWifiHotspotMedium::StartWifiHotspot(
return false;
}
// TODO: starting 5ghz AP with intel devices fail often bcz of LAR. Find a workaround
// Get device capabilities to select the best available band
// api::WifiCapability& capability = wireless_device_->GetCapability();
// std::string selected_band;
// if (capability.supports_6_ghz) {
// selected_band = "a"; // 5/6 GHz - NetworkManager uses "a" for both 5 GHz and 6 GHz
// LOG(INFO) << __func__ << ": Device supports 6 GHz, using 5/6 GHz band";
// } else if (capability.supports_5_ghz) {
// selected_band = "a"; // 5 GHz
// LOG(INFO) << __func__ << ": Device supports 5 GHz, using 5 GHz band";
// } else {
// selected_band = "bg"; // 2.4 GHz
// LOG(INFO) << __func__ << ": Device supports only 2.4 GHz, using 2.4 GHz band";
// }
api::WifiCapability& capability = wireless_device_->GetCapability();
std::string selected_band;
int selected_channel = kPreferred24GhzChannel;
if (capability.supports_6_ghz) {
selected_band = "a"; // 5/6 GHz - NetworkManager uses "a" for both 5 GHz and 6 GHz
selected_channel = kPreferred5GhzChannel;
LOG(INFO) << __func__
<< ": Device supports 6 GHz, using 5/6 GHz band on channel "
<< selected_channel;
} else if (capability.supports_5_ghz) {
selected_band = "a"; // 5 GHz
selected_channel = kPreferred5GhzChannel;
LOG(INFO) << __func__ << ": Device supports 5 GHz, using 5 GHz band on "
<< "channel " << selected_channel;
} else {
selected_band = "bg"; // 2.4 GHz
selected_channel = kPreferred24GhzChannel;
LOG(INFO) << __func__
<< ": Device supports only 2.4 GHz, using 2.4 GHz band on "
<< "channel " << selected_channel;
}
std::map<std::string, std::map<std::string, sdbus::Variant>>
connection_settings{
@@ -175,7 +192,8 @@ bool NetworkManagerWifiHotspotMedium::StartWifiHotspot(
{{"assigned-mac-address", "random"},
{"ap-isolation", networkmanager::constants::kNMTernaryFalse},
{"mode", "ap"},
{"band", "bg"},
{"band", selected_band},
{"channel", selected_channel},
{"ssid", std::vector<uint8_t>(ssid.begin(), ssid.end())},
{"security", "802-11-wireless-security"}}},
{"802-11-wireless-security",