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SubjectRe: Multithreaded TCP/IP stack

On 13-Jul-2000 Andi Kleen wrote:
> The 2.2 stack is under two independent locks (kernel lock and bh lock).
> In later 2.2 the expensive parts of the TX path (copy
> and checksum) run outside the kernel lock. About half of Incoming runs
> in the serialized NETBH, but you can save a lot of that by using
> a NIC that that supports hardware checksumming like the Tornado.

Is this the 3Com 990 series? Is there Linux support for the hardware
checksumming?

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