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ethernet: fix host-side perf bug causing unneccesary retransmits

This commit is contained in:
Fischer Moseley 2026-01-11 20:36:56 -07:00
parent 80fd6bae40
commit c5d23aba76
1 changed files with 4 additions and 2 deletions
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6
src/manta/ethernet/__init__.py
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@ -610,7 +610,7 @@ class EthernetInterface(Elaboratable):
while retry_count < self._max_retries:
request = self._read_request_bytes(self._seq_num, addr, length)
sock.sendto(request, (self._fpga_ip_addr, self._udp_port))
data, ip_addr = sock.recvfrom(4 + (length * 4))
data, (ip_addr, port) = sock.recvfrom(4 + (length * 4))
if ip_addr != self._fpga_ip_addr:
raise ValueError("Non-Manta traffic detected on this UDP port!")
@ -622,7 +622,8 @@ class EthernetInterface(Elaboratable):
response_type = MessageTypes(part_select(data[0], 29, 31))
if response_type == MessageTypes.READ_RESPONSE:
assert len(data) == length - 1
assert len(data) - 1 == length
self._seq_num += 1
return data[1:]
elif response_type == MessageTypes.NACK:
@ -656,6 +657,7 @@ class EthernetInterface(Elaboratable):
response_type = MessageTypes(part_select(data[0], 29, 31))
if response_type == MessageTypes.WRITE_RESPONSE:
self._seq_num += 1
return
elif response_type == MessageTypes.NACK: