Re: zero-copy TCP

From: Werner Almesberger (
Date: Sun Sep 03 2000 - 12:55:44 EST

Ingo Molnar wrote:
> i believe such zero-copy send should only be allowed for drivers which can
> guarantee correct checksums.

Hmm, I think this shouldn't be tied too closely to TCP. E.g. you can
probably play wonderful ALF tricks with raw sockets.

For TCP/UDP, such a restriction may be useful, but then it shouldn't
be visible to the application, or route changes on multi-homed systems
with different hardware on those ports would be great fun.

- Werner

 / Werner Almesberger, ICA, EPFL, CH /
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
Please read the FAQ at

This archive was generated by hypermail 2b29 : Thu Sep 07 2000 - 21:00:15 EST