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authorSubv <subv2112@gmail.com>2017-07-17 16:39:12 +0200
committerSubv <subv2112@gmail.com>2017-08-27 17:48:11 +0200
commit2e9f544ecc9a01ff59859b43d65c61a2838e7c34 (patch)
treedee40c0fdf2d86195995a628c4e872fe12c4ecd3 /src/core/hle/service/nwm
parentServices/UDS: Add functions to generate 802.11 auth and assoc response frames. (diff)
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Diffstat (limited to 'src/core/hle/service/nwm')
-rw-r--r--src/core/hle/service/nwm/nwm_uds.cpp65
1 files changed, 62 insertions, 3 deletions
diff --git a/src/core/hle/service/nwm/nwm_uds.cpp b/src/core/hle/service/nwm/nwm_uds.cpp
index 6dbdff044..8fdf160ff 100644
--- a/src/core/hle/service/nwm/nwm_uds.cpp
+++ b/src/core/hle/service/nwm/nwm_uds.cpp
@@ -4,6 +4,7 @@
#include <array>
#include <cstring>
+#include <mutex>
#include <unordered_map>
#include <vector>
#include "common/common_types.h"
@@ -15,8 +16,10 @@
#include "core/hle/result.h"
#include "core/hle/service/nwm/nwm_uds.h"
#include "core/hle/service/nwm/uds_beacon.h"
+#include "core/hle/service/nwm/uds_connection.h"
#include "core/hle/service/nwm/uds_data.h"
#include "core/memory.h"
+#include "network/network.h"
namespace Service {
namespace NWM {
@@ -51,6 +54,52 @@ static NetworkInfo network_info;
// Event that will generate and send the 802.11 beacon frames.
static int beacon_broadcast_event;
+// Mutex to synchronize access to the list of received beacons between the emulation thread and the
+// network thread.
+static std::mutex beacon_mutex;
+
+// Number of beacons to store before we start dropping the old ones.
+// TODO(Subv): Find a more accurate value for this limit.
+constexpr size_t MaxBeaconFrames = 15;
+
+// List of the last <MaxBeaconFrames> beacons received from the network.
+static std::deque<Network::WifiPacket> received_beacons;
+
+/**
+ * Returns a list of received 802.11 beacon frames from the specified sender since the last call.
+ */
+std::deque<Network::WifiPacket> GetReceivedBeacons(const MacAddress& sender) {
+ std::lock_guard<std::mutex> lock(beacon_mutex);
+ // TODO(Subv): Filter by sender.
+ return std::move(received_beacons);
+}
+
+/// Sends a WifiPacket to the room we're currently connected to.
+void SendPacket(Network::WifiPacket& packet) {
+ // TODO(Subv): Implement.
+}
+
+// Inserts the received beacon frame in the beacon queue and removes any older beacons if the size
+// limit is exceeded.
+void HandleBeaconFrame(const Network::WifiPacket& packet) {
+ std::lock_guard<std::mutex> lock(beacon_mutex);
+
+ received_beacons.emplace_back(packet);
+
+ // Discard old beacons if the buffer is full.
+ if (received_beacons.size() > MaxBeaconFrames)
+ received_beacons.pop_front();
+}
+
+/// Callback to parse and handle a received wifi packet.
+void OnWifiPacketReceived(const Network::WifiPacket& packet) {
+ switch (packet.type) {
+ case Network::WifiPacket::PacketType::Beacon:
+ HandleBeaconFrame(packet);
+ break;
+ }
+}
+
/**
* NWM_UDS::Shutdown service function
* Inputs:
@@ -111,8 +160,7 @@ static void RecvBeaconBroadcastData(Interface* self) {
u32 total_size = sizeof(BeaconDataReplyHeader);
// Retrieve all beacon frames that were received from the desired mac address.
- std::deque<WifiPacket> beacons =
- GetReceivedPackets(WifiPacket::PacketType::Beacon, mac_address);
+ auto beacons = GetReceivedBeacons(mac_address);
BeaconDataReplyHeader data_reply_header{};
data_reply_header.total_entries = beacons.size();
@@ -193,6 +241,9 @@ static void InitializeWithVersion(Interface* self) {
rb.Push(RESULT_SUCCESS);
rb.PushCopyHandles(Kernel::g_handle_table.Create(connection_status_event).Unwrap());
+ // TODO(Subv): Connect the OnWifiPacketReceived function to the wifi packet received callback of
+ // the room we're currently in.
+
LOG_DEBUG(Service_NWM, "called sharedmem_size=0x%08X, version=0x%08X, sharedmem_handle=0x%08X",
sharedmem_size, version, sharedmem_handle);
}
@@ -610,9 +661,17 @@ static void BeaconBroadcastCallback(u64 userdata, int cycles_late) {
if (connection_status.status != static_cast<u32>(NetworkStatus::ConnectedAsHost))
return;
- // TODO(Subv): Actually send the beacon.
std::vector<u8> frame = GenerateBeaconFrame(network_info, node_info);
+ using Network::WifiPacket;
+ WifiPacket packet;
+ packet.type = WifiPacket::PacketType::Beacon;
+ packet.data = std::move(frame);
+ packet.destination_address = Network::BroadcastMac;
+ packet.channel = network_channel;
+
+ SendPacket(packet);
+
// Start broadcasting the network, send a beacon frame every 102.4ms.
CoreTiming::ScheduleEvent(msToCycles(DefaultBeaconInterval * MillisecondsPerTU) - cycles_late,
beacon_broadcast_event, 0);