core/icmp: fix reply checksum when request checksum >= 0xf800

need to add +1
2019-02-24 23:30:28 +01:00 · 2019-02-24 23:30:28 +01:00 · b4c1cfe8c5
parent 77fa4bfb1e
commit b4c1cfe8c5
1 changed files with 1 additions and 1 deletions
--- a/liteeth/core/icmp.py
+++ b/liteeth/core/icmp.py
@ -132,7 +132,7 @@ class LiteEthICMPEcho(Module):
            sink.connect(self.buffer.sink),
            self.buffer.source.connect(source),
            self.source.msgtype.eq(0x0),
-            self.source.checksum.eq(~((~self.buffer.source.checksum)-0x0800))
+            self.source.checksum.eq(self.buffer.source.checksum + 0x800 + (self.buffer.source.checksum >= 0xf800))
        ]

 # icmp