Wifi: HAL API to query the list of usable channels
API can be used to query what modes (SAP, STA,
WFD Client, WFD Group Owner, TDLS, NAN) can be
supported on each channel for specified band.
Needs support from Wifi chip vendors.
Bug: 160212907
Test: VTS - VtsHalWifiV1_5TargetTest
Change-Id: Icf270b8c2ee14c794778421c9d988712c5c38380
diff --git a/wifi/1.5/default/wifi_legacy_hal.cpp b/wifi/1.5/default/wifi_legacy_hal.cpp
index 3e65ee0..94603b3 100644
--- a/wifi/1.5/default/wifi_legacy_hal.cpp
+++ b/wifi/1.5/default/wifi_legacy_hal.cpp
@@ -36,6 +36,7 @@
static constexpr uint32_t kLinkLayerStatsDataMpduSizeThreshold = 128;
static constexpr uint32_t kMaxWakeReasonStatsArraySize = 32;
static constexpr uint32_t kMaxRingBuffers = 10;
+static constexpr uint32_t kMaxWifiUsableChannels = 256;
// need a long timeout (1000ms) for chips that unload their driver.
static constexpr uint32_t kMaxStopCompleteWaitMs = 1000;
static constexpr char kDriverPropName[] = "wlan.driver.status";
@@ -1636,6 +1637,19 @@
multiplier);
}
+std::pair<wifi_error, std::vector<wifi_usable_channel>>
+WifiLegacyHal::getUsableChannels(uint32_t band_mask, uint32_t iface_mode_mask) {
+ std::vector<wifi_usable_channel> channels;
+ channels.resize(kMaxWifiUsableChannels);
+ uint32_t size = 0;
+ wifi_error status = global_func_table_.wifi_get_usable_channels(
+ global_handle_, band_mask, iface_mode_mask, channels.size(), &size,
+ reinterpret_cast<wifi_usable_channel*>(channels.data()));
+ CHECK(size >= 0 && size <= kMaxWifiUsableChannels);
+ channels.resize(size);
+ return {status, std::move(channels)};
+}
+
void WifiLegacyHal::invalidate() {
global_handle_ = nullptr;
iface_name_to_handle_.clear();