"Louis A. Mamakos" wrote:
>
> Setting aside the degree to which you choose to be paranoid about
> where data can be corrupted, and the likelyhood thereof-- there
> is an architectural issue here, which is that the CRC provided
> by your friendly neighborhood Ethernet NIC card only protects the
> data over one Ethernet subnetwork. The TCP checksum, and TCP in
> general, provides end-to-end semantics, independent of the
> concatenation of physical links the TCP segments might transit from
> the source to the destination. If you have an end-to-end protocol,
> with end-to-end semantics, then you need and end-to-end mechanism.
I think you need to read the Tigon II driver in the
/sys/pci directory, and come back when you realize
that it supports offloading the TCP checksum.
FWIW: The Intel Gigabit, Tigon III, and several other
Gigabit cards support this, as well.
-- Terry
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