mirror of
https://github.com/alexforencich/verilog-ethernet.git
synced 2025-01-14 06:43:18 +08:00
597 lines
20 KiB
Python
Executable File
597 lines
20 KiB
Python
Executable File
#!/usr/bin/env python
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"""
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Copyright (c) 2014-2016 Alex Forencich
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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"""
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from myhdl import *
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import os
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import eth_ep
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import arp_ep
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import ip_ep
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module = 'ip_complete_64'
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testbench = 'test_%s' % module
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srcs = []
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srcs.append("../rtl/%s.v" % module)
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srcs.append("../rtl/ip_64.v")
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srcs.append("../rtl/ip_eth_rx_64.v")
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srcs.append("../rtl/ip_eth_tx_64.v")
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srcs.append("../rtl/arp_64.v")
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srcs.append("../rtl/arp_cache.v")
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srcs.append("../rtl/arp_eth_rx_64.v")
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srcs.append("../rtl/arp_eth_tx_64.v")
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srcs.append("../rtl/eth_arb_mux_64_2.v")
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srcs.append("../rtl/eth_mux_64_2.v")
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srcs.append("../lib/axis/rtl/arbiter.v")
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srcs.append("../lib/axis/rtl/priority_encoder.v")
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srcs.append("%s.v" % testbench)
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src = ' '.join(srcs)
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build_cmd = "iverilog -o %s.vvp %s" % (testbench, src)
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def bench():
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# Inputs
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clk = Signal(bool(0))
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rst = Signal(bool(0))
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current_test = Signal(intbv(0)[8:])
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input_eth_hdr_valid = Signal(bool(0))
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input_eth_dest_mac = Signal(intbv(0)[48:])
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input_eth_src_mac = Signal(intbv(0)[48:])
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input_eth_type = Signal(intbv(0)[16:])
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input_eth_payload_tdata = Signal(intbv(0)[64:])
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input_eth_payload_tkeep = Signal(intbv(0)[8:])
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input_eth_payload_tvalid = Signal(bool(0))
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input_eth_payload_tlast = Signal(bool(0))
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input_eth_payload_tuser = Signal(bool(0))
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input_ip_hdr_valid = Signal(bool(0))
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input_ip_dscp = Signal(intbv(0)[6:])
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input_ip_ecn = Signal(intbv(0)[2:])
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input_ip_length = Signal(intbv(0)[16:])
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input_ip_ttl = Signal(intbv(0)[8:])
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input_ip_protocol = Signal(intbv(0)[8:])
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input_ip_source_ip = Signal(intbv(0)[32:])
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input_ip_dest_ip = Signal(intbv(0)[32:])
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input_ip_payload_tdata = Signal(intbv(0)[64:])
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input_ip_payload_tkeep = Signal(intbv(0)[8:])
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input_ip_payload_tvalid = Signal(bool(0))
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input_ip_payload_tlast = Signal(bool(0))
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input_ip_payload_tuser = Signal(bool(0))
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output_eth_payload_tready = Signal(bool(0))
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output_eth_hdr_ready = Signal(bool(0))
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output_ip_hdr_ready = Signal(bool(0))
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output_ip_payload_tready = Signal(bool(0))
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# Outputs
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input_eth_hdr_ready = Signal(bool(0))
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input_eth_payload_tready = Signal(bool(0))
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input_ip_hdr_ready = Signal(bool(0))
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input_ip_payload_tready = Signal(bool(0))
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output_eth_hdr_valid = Signal(bool(0))
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output_eth_dest_mac = Signal(intbv(0)[48:])
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output_eth_src_mac = Signal(intbv(0)[48:])
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output_eth_type = Signal(intbv(0)[16:])
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output_eth_payload_tdata = Signal(intbv(0)[64:])
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output_eth_payload_tkeep = Signal(intbv(0)[8:])
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output_eth_payload_tvalid = Signal(bool(0))
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output_eth_payload_tlast = Signal(bool(0))
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output_eth_payload_tuser = Signal(bool(0))
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output_ip_hdr_valid = Signal(bool(0))
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output_ip_eth_dest_mac = Signal(intbv(0)[48:])
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output_ip_eth_src_mac = Signal(intbv(0)[48:])
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output_ip_eth_type = Signal(intbv(0)[16:])
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output_ip_version = Signal(intbv(0)[4:])
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output_ip_ihl = Signal(intbv(0)[4:])
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output_ip_dscp = Signal(intbv(0)[6:])
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output_ip_ecn = Signal(intbv(0)[2:])
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output_ip_length = Signal(intbv(0)[16:])
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output_ip_identification = Signal(intbv(0)[16:])
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output_ip_flags = Signal(intbv(0)[3:])
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output_ip_fragment_offset = Signal(intbv(0)[13:])
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output_ip_ttl = Signal(intbv(0)[8:])
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output_ip_protocol = Signal(intbv(0)[8:])
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output_ip_header_checksum = Signal(intbv(0)[16:])
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output_ip_source_ip = Signal(intbv(0)[32:])
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output_ip_dest_ip = Signal(intbv(0)[32:])
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output_ip_payload_tdata = Signal(intbv(0)[64:])
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output_ip_payload_tkeep = Signal(intbv(0)[8:])
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output_ip_payload_tvalid = Signal(bool(0))
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output_ip_payload_tlast = Signal(bool(0))
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output_ip_payload_tuser = Signal(bool(0))
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rx_busy = Signal(bool(0))
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tx_busy = Signal(bool(0))
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rx_error_header_early_termination = Signal(bool(0))
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rx_error_payload_early_termination = Signal(bool(0))
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rx_error_invalid_header = Signal(bool(0))
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rx_error_invalid_checksum = Signal(bool(0))
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tx_error_payload_early_termination = Signal(bool(0))
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tx_error_arp_failed = Signal(bool(0))
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local_mac = Signal(intbv(0)[48:])
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local_ip = Signal(intbv(0)[32:])
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gateway_ip = Signal(intbv(0)[32:])
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subnet_mask = Signal(intbv(0)[32:])
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clear_arp_cache = Signal(bool(0))
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# sources and sinks
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eth_source_pause = Signal(bool(0))
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eth_sink_pause = Signal(bool(0))
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ip_source_pause = Signal(bool(0))
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ip_sink_pause = Signal(bool(0))
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eth_source = eth_ep.EthFrameSource()
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eth_source_logic = eth_source.create_logic(
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clk,
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rst,
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eth_hdr_ready=input_eth_hdr_ready,
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eth_hdr_valid=input_eth_hdr_valid,
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eth_dest_mac=input_eth_dest_mac,
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eth_src_mac=input_eth_src_mac,
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eth_type=input_eth_type,
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eth_payload_tdata=input_eth_payload_tdata,
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eth_payload_tkeep=input_eth_payload_tkeep,
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eth_payload_tvalid=input_eth_payload_tvalid,
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eth_payload_tready=input_eth_payload_tready,
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eth_payload_tlast=input_eth_payload_tlast,
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eth_payload_tuser=input_eth_payload_tuser,
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pause=eth_source_pause,
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name='eth_source'
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)
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eth_sink = eth_ep.EthFrameSink()
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eth_sink_logic = eth_sink.create_logic(
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clk,
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rst,
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eth_hdr_ready=output_eth_hdr_ready,
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eth_hdr_valid=output_eth_hdr_valid,
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eth_dest_mac=output_eth_dest_mac,
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eth_src_mac=output_eth_src_mac,
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eth_type=output_eth_type,
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eth_payload_tdata=output_eth_payload_tdata,
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eth_payload_tkeep=output_eth_payload_tkeep,
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eth_payload_tvalid=output_eth_payload_tvalid,
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eth_payload_tready=output_eth_payload_tready,
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eth_payload_tlast=output_eth_payload_tlast,
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eth_payload_tuser=output_eth_payload_tuser,
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pause=eth_sink_pause,
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name='eth_sink'
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)
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ip_source = ip_ep.IPFrameSource()
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ip_source_logic = ip_source.create_logic(
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clk,
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rst,
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ip_hdr_valid=input_ip_hdr_valid,
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ip_hdr_ready=input_ip_hdr_ready,
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ip_dscp=input_ip_dscp,
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ip_ecn=input_ip_ecn,
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ip_length=input_ip_length,
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ip_ttl=input_ip_ttl,
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ip_protocol=input_ip_protocol,
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ip_source_ip=input_ip_source_ip,
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ip_dest_ip=input_ip_dest_ip,
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ip_payload_tdata=input_ip_payload_tdata,
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ip_payload_tkeep=input_ip_payload_tkeep,
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ip_payload_tvalid=input_ip_payload_tvalid,
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ip_payload_tready=input_ip_payload_tready,
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ip_payload_tlast=input_ip_payload_tlast,
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ip_payload_tuser=input_ip_payload_tuser,
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pause=ip_source_pause,
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name='ip_source'
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)
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ip_sink = ip_ep.IPFrameSink()
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ip_sink_logic = ip_sink.create_logic(
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clk,
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rst,
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ip_hdr_ready=output_ip_hdr_ready,
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ip_hdr_valid=output_ip_hdr_valid,
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eth_dest_mac=output_ip_eth_dest_mac,
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eth_src_mac=output_ip_eth_src_mac,
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eth_type=output_ip_eth_type,
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ip_version=output_ip_version,
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ip_ihl=output_ip_ihl,
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ip_dscp=output_ip_dscp,
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ip_ecn=output_ip_ecn,
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ip_length=output_ip_length,
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ip_identification=output_ip_identification,
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ip_flags=output_ip_flags,
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ip_fragment_offset=output_ip_fragment_offset,
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ip_ttl=output_ip_ttl,
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ip_protocol=output_ip_protocol,
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ip_header_checksum=output_ip_header_checksum,
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ip_source_ip=output_ip_source_ip,
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ip_dest_ip=output_ip_dest_ip,
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ip_payload_tdata=output_ip_payload_tdata,
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ip_payload_tkeep=output_ip_payload_tkeep,
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ip_payload_tvalid=output_ip_payload_tvalid,
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ip_payload_tready=output_ip_payload_tready,
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ip_payload_tlast=output_ip_payload_tlast,
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ip_payload_tuser=output_ip_payload_tuser,
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pause=ip_sink_pause,
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name='ip_sink'
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)
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# DUT
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if os.system(build_cmd):
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raise Exception("Error running build command")
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dut = Cosimulation(
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"vvp -m myhdl %s.vvp -lxt2" % testbench,
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clk=clk,
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rst=rst,
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current_test=current_test,
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input_eth_hdr_valid=input_eth_hdr_valid,
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input_eth_hdr_ready=input_eth_hdr_ready,
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input_eth_dest_mac=input_eth_dest_mac,
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input_eth_src_mac=input_eth_src_mac,
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input_eth_type=input_eth_type,
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input_eth_payload_tdata=input_eth_payload_tdata,
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input_eth_payload_tkeep=input_eth_payload_tkeep,
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input_eth_payload_tvalid=input_eth_payload_tvalid,
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input_eth_payload_tready=input_eth_payload_tready,
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input_eth_payload_tlast=input_eth_payload_tlast,
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input_eth_payload_tuser=input_eth_payload_tuser,
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output_eth_hdr_valid=output_eth_hdr_valid,
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output_eth_hdr_ready=output_eth_hdr_ready,
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output_eth_dest_mac=output_eth_dest_mac,
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output_eth_src_mac=output_eth_src_mac,
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output_eth_type=output_eth_type,
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output_eth_payload_tdata=output_eth_payload_tdata,
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output_eth_payload_tkeep=output_eth_payload_tkeep,
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output_eth_payload_tvalid=output_eth_payload_tvalid,
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output_eth_payload_tready=output_eth_payload_tready,
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output_eth_payload_tlast=output_eth_payload_tlast,
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output_eth_payload_tuser=output_eth_payload_tuser,
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input_ip_hdr_valid=input_ip_hdr_valid,
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input_ip_hdr_ready=input_ip_hdr_ready,
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input_ip_dscp=input_ip_dscp,
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input_ip_ecn=input_ip_ecn,
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input_ip_length=input_ip_length,
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input_ip_ttl=input_ip_ttl,
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input_ip_protocol=input_ip_protocol,
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input_ip_source_ip=input_ip_source_ip,
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input_ip_dest_ip=input_ip_dest_ip,
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input_ip_payload_tdata=input_ip_payload_tdata,
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input_ip_payload_tkeep=input_ip_payload_tkeep,
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input_ip_payload_tvalid=input_ip_payload_tvalid,
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input_ip_payload_tready=input_ip_payload_tready,
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input_ip_payload_tlast=input_ip_payload_tlast,
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input_ip_payload_tuser=input_ip_payload_tuser,
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output_ip_hdr_valid=output_ip_hdr_valid,
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output_ip_hdr_ready=output_ip_hdr_ready,
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output_ip_eth_dest_mac=output_ip_eth_dest_mac,
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output_ip_eth_src_mac=output_ip_eth_src_mac,
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output_ip_eth_type=output_ip_eth_type,
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output_ip_version=output_ip_version,
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output_ip_ihl=output_ip_ihl,
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output_ip_dscp=output_ip_dscp,
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output_ip_ecn=output_ip_ecn,
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output_ip_length=output_ip_length,
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output_ip_identification=output_ip_identification,
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output_ip_flags=output_ip_flags,
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output_ip_fragment_offset=output_ip_fragment_offset,
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output_ip_ttl=output_ip_ttl,
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output_ip_protocol=output_ip_protocol,
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output_ip_header_checksum=output_ip_header_checksum,
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output_ip_source_ip=output_ip_source_ip,
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output_ip_dest_ip=output_ip_dest_ip,
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output_ip_payload_tdata=output_ip_payload_tdata,
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output_ip_payload_tkeep=output_ip_payload_tkeep,
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output_ip_payload_tvalid=output_ip_payload_tvalid,
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output_ip_payload_tready=output_ip_payload_tready,
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output_ip_payload_tlast=output_ip_payload_tlast,
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output_ip_payload_tuser=output_ip_payload_tuser,
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rx_busy=rx_busy,
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tx_busy=tx_busy,
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rx_error_header_early_termination=rx_error_header_early_termination,
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rx_error_payload_early_termination=rx_error_payload_early_termination,
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rx_error_invalid_header=rx_error_invalid_header,
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rx_error_invalid_checksum=rx_error_invalid_checksum,
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tx_error_payload_early_termination=tx_error_payload_early_termination,
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tx_error_arp_failed=tx_error_arp_failed,
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local_mac=local_mac,
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local_ip=local_ip,
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gateway_ip=gateway_ip,
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subnet_mask=subnet_mask,
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clear_arp_cache=clear_arp_cache
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)
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@always(delay(4))
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def clkgen():
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clk.next = not clk
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rx_error_header_early_termination_asserted = Signal(bool(0))
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rx_error_payload_early_termination_asserted = Signal(bool(0))
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rx_error_invalid_header_asserted = Signal(bool(0))
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rx_error_invalid_checksum_asserted = Signal(bool(0))
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tx_error_payload_early_termination_asserted = Signal(bool(0))
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tx_error_arp_failed_asserted = Signal(bool(0))
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@always(clk.posedge)
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def monitor():
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if (rx_error_header_early_termination):
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rx_error_header_early_termination_asserted.next = 1
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if (rx_error_payload_early_termination):
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rx_error_payload_early_termination_asserted.next = 1
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if (rx_error_invalid_header):
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rx_error_invalid_header_asserted.next = 1
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if (rx_error_invalid_checksum):
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rx_error_invalid_checksum_asserted.next = 1
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if (tx_error_payload_early_termination):
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tx_error_payload_early_termination_asserted.next = 1
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if (tx_error_arp_failed):
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tx_error_arp_failed_asserted.next = 1
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def wait_normal():
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while (input_eth_payload_tvalid or input_ip_payload_tvalid or
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output_eth_payload_tvalid or output_ip_payload_tvalid or
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input_eth_hdr_valid or input_ip_hdr_valid):
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yield clk.posedge
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@instance
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def check():
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yield delay(100)
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yield clk.posedge
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rst.next = 1
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yield clk.posedge
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rst.next = 0
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yield clk.posedge
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yield delay(100)
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yield clk.posedge
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# set MAC and IP address
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local_mac.next = 0x5A5152535455
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local_ip.next = 0xc0a80164
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gateway_ip.next = 0xc0a80101
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subnet_mask.next = 0xffffff00
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yield clk.posedge
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print("test 1: test IP RX packet")
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current_test.next = 1
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test_frame = ip_ep.IPFrame()
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test_frame.eth_dest_mac = 0x5A5152535455
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test_frame.eth_src_mac = 0xDAD1D2D3D4D5
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test_frame.eth_type = 0x0800
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test_frame.ip_version = 4
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test_frame.ip_ihl = 5
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test_frame.ip_dscp = 0
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test_frame.ip_ecn = 0
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test_frame.ip_length = None
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test_frame.ip_identification = 0
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test_frame.ip_flags = 2
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test_frame.ip_fragment_offset = 0
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test_frame.ip_ttl = 64
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test_frame.ip_protocol = 0x11
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test_frame.ip_header_checksum = None
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test_frame.ip_source_ip = 0xc0a80165
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test_frame.ip_dest_ip = 0xc0a80164
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test_frame.payload = bytearray(range(32))
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test_frame.build()
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eth_frame = test_frame.build_eth()
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eth_source.send(eth_frame)
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yield clk.posedge
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yield clk.posedge
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yield wait_normal()
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yield clk.posedge
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yield clk.posedge
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rx_frame = ip_sink.recv()
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|
|
|
assert rx_frame == test_frame
|
|
|
|
assert eth_source.empty()
|
|
assert eth_sink.empty()
|
|
assert ip_source.empty()
|
|
assert ip_sink.empty()
|
|
|
|
yield delay(100)
|
|
|
|
yield clk.posedge
|
|
print("test 2: test IP TX packet")
|
|
current_test.next = 2
|
|
|
|
# send IP packet
|
|
test_frame = ip_ep.IPFrame()
|
|
test_frame.eth_dest_mac = 0xDAD1D2D3D4D5
|
|
test_frame.eth_src_mac = 0x5A5152535455
|
|
test_frame.eth_type = 0x0800
|
|
test_frame.ip_version = 4
|
|
test_frame.ip_ihl = 5
|
|
test_frame.ip_dscp = 0
|
|
test_frame.ip_ecn = 0
|
|
test_frame.ip_length = None
|
|
test_frame.ip_identification = 0
|
|
test_frame.ip_flags = 2
|
|
test_frame.ip_fragment_offset = 0
|
|
test_frame.ip_ttl = 64
|
|
test_frame.ip_protocol = 0x11
|
|
test_frame.ip_header_checksum = None
|
|
test_frame.ip_source_ip = 0xc0a80164
|
|
test_frame.ip_dest_ip = 0xc0a80166
|
|
test_frame.payload = bytearray(range(32))
|
|
test_frame.build()
|
|
|
|
ip_source.send(test_frame)
|
|
|
|
# wait for ARP request packet
|
|
while eth_sink.empty():
|
|
yield clk.posedge
|
|
|
|
rx_frame = eth_sink.recv()
|
|
check_frame = arp_ep.ARPFrame()
|
|
check_frame.parse_eth(rx_frame)
|
|
|
|
assert check_frame.eth_dest_mac == 0xFFFFFFFFFFFF
|
|
assert check_frame.eth_src_mac == 0x5A5152535455
|
|
assert check_frame.eth_type == 0x0806
|
|
assert check_frame.arp_htype == 0x0001
|
|
assert check_frame.arp_ptype == 0x0800
|
|
assert check_frame.arp_hlen == 6
|
|
assert check_frame.arp_plen == 4
|
|
assert check_frame.arp_oper == 1
|
|
assert check_frame.arp_sha == 0x5A5152535455
|
|
assert check_frame.arp_spa == 0xc0a80164
|
|
assert check_frame.arp_tha == 0x000000000000
|
|
assert check_frame.arp_tpa == 0xc0a80166
|
|
|
|
# generate response
|
|
arp_frame = arp_ep.ARPFrame()
|
|
arp_frame.eth_dest_mac = 0x5A5152535455
|
|
arp_frame.eth_src_mac = 0xDAD1D2D3D4D5
|
|
arp_frame.eth_type = 0x0806
|
|
arp_frame.arp_htype = 0x0001
|
|
arp_frame.arp_ptype = 0x0800
|
|
arp_frame.arp_hlen = 6
|
|
arp_frame.arp_plen = 4
|
|
arp_frame.arp_oper = 2
|
|
arp_frame.arp_sha = 0xDAD1D2D3D4D5
|
|
arp_frame.arp_spa = 0xc0a80166
|
|
arp_frame.arp_tha = 0x5A5152535455
|
|
arp_frame.arp_tpa = 0xc0a80164
|
|
eth_source.send(arp_frame.build_eth())
|
|
|
|
yield clk.posedge
|
|
yield clk.posedge
|
|
|
|
yield wait_normal()
|
|
|
|
yield clk.posedge
|
|
yield clk.posedge
|
|
|
|
rx_frame = eth_sink.recv()
|
|
|
|
check_frame = ip_ep.IPFrame()
|
|
check_frame.parse_eth(rx_frame)
|
|
|
|
print(test_frame)
|
|
print(check_frame)
|
|
|
|
assert check_frame == test_frame
|
|
|
|
assert eth_source.empty()
|
|
assert eth_sink.empty()
|
|
assert ip_source.empty()
|
|
assert ip_sink.empty()
|
|
|
|
yield delay(100)
|
|
|
|
yield clk.posedge
|
|
print("test 3: test IP TX arp fail packet")
|
|
current_test.next = 2
|
|
|
|
tx_error_arp_failed_asserted.next = 0
|
|
|
|
test_frame = ip_ep.IPFrame()
|
|
test_frame.eth_dest_mac = 0xDAD1D2D3D4D5
|
|
test_frame.eth_src_mac = 0x5A5152535455
|
|
test_frame.eth_type = 0x0800
|
|
test_frame.ip_version = 4
|
|
test_frame.ip_ihl = 5
|
|
test_frame.ip_dscp = 0
|
|
test_frame.ip_ecn = 0
|
|
test_frame.ip_length = None
|
|
test_frame.ip_identification = 0
|
|
test_frame.ip_flags = 2
|
|
test_frame.ip_fragment_offset = 0
|
|
test_frame.ip_ttl = 64
|
|
test_frame.ip_protocol = 0x11
|
|
test_frame.ip_header_checksum = None
|
|
test_frame.ip_source_ip = 0xc0a80164
|
|
test_frame.ip_dest_ip = 0xc0a80167
|
|
test_frame.payload = bytearray(range(32))
|
|
test_frame.build()
|
|
|
|
ip_source.send(test_frame)
|
|
|
|
yield clk.posedge
|
|
yield clk.posedge
|
|
|
|
yield wait_normal()
|
|
|
|
yield clk.posedge
|
|
yield clk.posedge
|
|
|
|
assert tx_error_arp_failed_asserted
|
|
|
|
# check for 4 ARP requests
|
|
assert eth_sink.count() == 4
|
|
|
|
while not eth_sink.empty():
|
|
rx_frame = eth_sink.recv()
|
|
|
|
check_frame = arp_ep.ARPFrame()
|
|
check_frame.parse_eth(rx_frame)
|
|
|
|
assert check_frame.eth_dest_mac == 0xFFFFFFFFFFFF
|
|
assert check_frame.eth_src_mac == 0x5A5152535455
|
|
assert check_frame.eth_type == 0x0806
|
|
assert check_frame.arp_htype == 0x0001
|
|
assert check_frame.arp_ptype == 0x0800
|
|
assert check_frame.arp_hlen == 6
|
|
assert check_frame.arp_plen == 4
|
|
assert check_frame.arp_oper == 1
|
|
assert check_frame.arp_sha == 0x5A5152535455
|
|
assert check_frame.arp_spa == 0xc0a80164
|
|
assert check_frame.arp_tha == 0x000000000000
|
|
assert check_frame.arp_tpa == 0xc0a80167
|
|
|
|
assert eth_source.empty()
|
|
assert eth_sink.empty()
|
|
assert ip_source.empty()
|
|
assert ip_sink.empty()
|
|
|
|
yield delay(100)
|
|
|
|
raise StopSimulation
|
|
|
|
return dut, eth_source_logic, eth_sink_logic, ip_source_logic, ip_sink_logic, clkgen, monitor, check
|
|
|
|
def test_bench():
|
|
sim = Simulation(bench())
|
|
sim.run()
|
|
|
|
if __name__ == '__main__':
|
|
print("Running test...")
|
|
test_bench()
|
|
|