[lwip-devel] [bug #50914] TCP server don't update the ack num

[Simon Goldschmidt]

Follow-up Comment #15, bug #50914 (project lwip):

> I believe checksum-on-copy is off by default

Oh, right. That's bad.

Well, it's probably good that way if we still have a bug there, but it's bad
since it should be much faster - at least for the case where we copy data
using memcpy and have a slow access to it when loading it into the CPU again
for calculating the checksum.

For checksum-offload setups, the speed change should not be that important.

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