Remove packet type and dst mac when sending raw packet

This is now derived from the passed packet data by
NetworkStack.

Test: m connectivity_multi_devices_snippet && \
      atest CtsConnectivityMultiDevicesTestCases:ConnectivityMultiDevicesTest
Test: atest NetworkStaticLibHostPythonTests
Bug: 335368434
Change-Id: Ida06c00e6f499b782cb903c9fa0a4154c2d8cf84

staticlibs/testutils/host/python/apf_utils.py

@@ -137,16 +137,12 @@ def send_broadcast_empty_ethercat_packet(
   packet += "00" * 46
 
   # Send the packet using a raw socket.
-  send_raw_packet_downstream(
-      ad, ETH_P_ETHERCAT, iface_name, ETHER_BROADCAST, packet
-  )
+  send_raw_packet_downstream(ad, iface_name, packet)
 
 
 def send_raw_packet_downstream(
     ad: android_device.AndroidDevice,
-    packetType: str,
     iface_name: str,
-    dst_mac: str,
     packet_in_hex: str,
 ) -> None:
   """Sends a raw packet over the specified downstream interface.
@@ -158,11 +154,8 @@ def send_raw_packet_downstream(
 
   Args:
       ad: The AndroidDevice object representing the connected device.
-      packetType: The type of packet to send (e.g., "88A4" for EtherCAT).
       iface_name: The name of the network interface to use (e.g., "wlan0",
         "eth0").
-      dst_mac: The destination MAC address of the packet (e.g., "FFFFFFFFFFFF"
-        for broadcast).
       packet_in_hex: The raw packet data starting from L2 header encoded in
         hexadecimal string format.
 
@@ -181,7 +174,7 @@ def send_raw_packet_downstream(
 
   cmd = (
       "cmd network_stack send-raw-packet-downstream"
-      f" {packetType} {iface_name} {dst_mac} {packet_in_hex}"
+      f" {iface_name} {packet_in_hex}"
   )
 
   # Expect no output or Unknown command if NetworkStack is too old. Throw otherwise.