Migrate MAC Addresses and BSSIDs from std::vector to std::array

Since MAC Addresses and BSSIDs are fixed size, it would be more
efficient to use a fixed length array to store them. Also, bugs
causing MAC Addresses to have the wrong size can be caught
more promptly than before.

Bug: 36974160
Fix: 36974160
Test: system/connectivity/wificond/runtests.sh
Test: manual - flash onto device and try connecting to Wifi
Change-Id: Iefab0b3bbfd286c135b10ccc4fa946faaad86ce4

1 files changed, 4 insertions, 3 deletions

diff --git a/ap_interface_impl.cpp b/ap_interface_impl.cpp
index 5700b20..f39e9c1 100644
--- a/ap_interface_impl.cpp
+++ b/ap_interface_impl.cpp
@@ -25,10 +25,10 @@
 
 using android::net::wifi::IApInterface;
 using android::wifi_system::InterfaceTool;
+using std::array;
 using std::endl;
 using std::string;
 using std::unique_ptr;
-using std::vector;
 
 using namespace std::placeholders;
 
@@ -80,8 +80,9 @@ void ApInterfaceImpl::Dump(std::stringstream* ss) const {
   *ss << "------- Dump End -------" << endl;
 }
 
-void ApInterfaceImpl::OnStationEvent(StationEvent event,
-                                     const vector<uint8_t>& mac_address) {
+void ApInterfaceImpl::OnStationEvent(
+    StationEvent event,
+    const array<uint8_t, ETH_ALEN>& mac_address) {
   if (event == NEW_STATION) {
     LOG(INFO) << "New station "
               << LoggingUtils::GetMacString(mac_address)