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udpip_tb: loopback working with model! :)

This commit is contained in:
Florent Kermarrec 2015-02-04 22:31:53 +01:00
parent a9da9dc750
commit ca1e028c77
2 changed files with 18 additions and 7 deletions
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5
liteeth/test/model/udp.py
View File

@ -40,6 +40,7 @@ class UDPPacket(Packet):
class UDP(Module):
def __init__(self, ip, ip_address, debug=False, loopback=False):
self.ip = ip
self.ip_address = ip_address
self.debug = debug
self.loopback = loopback
self.tx_packets = []
@ -63,8 +64,10 @@ class UDP(Module):
ip_packet.flags = 0
ip_packet.fragment_offset = 0
ip_packet.time_to_live = 0x80
ip_packet.source_ip_address = ip_address,
ip_packet.source_ip_address = self.ip_address
ip_packet.destination_ip_address = 0x12345678 # XXX
ip_packet.header_checksum = 0
ip_packet.protocol = udp_protocol
self.ip.send(ip_packet)
def callback(self, packet):

20
liteeth/test/udpip_tb.py
View File

@ -14,20 +14,22 @@ mac_address = 0x12345678abcd
class TB(Module):
def __init__(self):
self.submodules.phy_model = phy.PHY(8, debug=True)
self.submodules.mac_model = mac.MAC(self.phy_model, debug=True, loopback=False)
self.submodules.arp_model = arp.ARP(self.mac_model, mac_address, ip_address, debug=True)
self.submodules.ip_model = ip.IP(self.mac_model, mac_address, ip_address, debug=True, loopback=False)
self.submodules.udp_model = udp.UDP(self.ip_model, ip_address, debug=True, loopback=False)
self.submodules.phy_model = phy.PHY(8, debug=False)
self.submodules.mac_model = mac.MAC(self.phy_model, debug=False, loopback=False)
self.submodules.arp_model = arp.ARP(self.mac_model, mac_address, ip_address, debug=False)
self.submodules.ip_model = ip.IP(self.mac_model, mac_address, ip_address, debug=False, loopback=False)
self.submodules.udp_model = udp.UDP(self.ip_model, ip_address, debug=False, loopback=True)
self.submodules.udp_ip = LiteEthUDPIPCore(self.phy_model, mac_address, ip_address)
self.submodules.streamer = PacketStreamer(eth_udp_user_description(8))
self.submodules.logger = PacketLogger(eth_udp_user_description(8))
self.comb += [
Record.connect(self.streamer.source, self.udp_ip.sink),
self.udp_ip.sink.ip_address.eq(0x12345678),
self.udp_ip.sink.source_port.eq(0x1234),
self.udp_ip.sink.destination_port.eq(0x5678),
self.udp_ip.sink.length.eq(64)
self.udp_ip.sink.length.eq(64),
Record.connect(self.udp_ip.source, self.logger.sink)
]
# use sys_clk for each clock_domain
@ -53,6 +55,12 @@ class TB(Module):
while True:
packet = Packet([i for i in range(64)])
yield from self.streamer.send(packet)
yield from self.logger.receive()
# check results
s, l, e = check(packet, self.logger.packet)
print("shift "+ str(s) + " / length " + str(l) + " / errors " + str(e))
if __name__ == "__main__":
run_simulation(TB(), ncycles=2048, vcd_name="my.vcd", keep_files=True)