* [RFD] Pluggable code design (was: can we reuse an skb)
[not found] ` <1f808b4a0906202241l1d74364ft52d99ecb6b0274f5@mail.gmail.com>
@ 2009-06-21 11:46 ` Al Boldi
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From: Al Boldi @ 2009-06-21 11:46 UTC (permalink / raw)
To: Peter Chacko, David Miller
Cc: rick.jones2, radhamohan_ch, netdev, linux-kernel
Peter Chacko wrote:
> What i am considering here is the super optimization of memory buffers
> for a multi-layer packet processor, without needing to move packets
> into user space. In that case, i am optimizing my custom network stack
> with a pre-allocated MTU sized and a few jumbo-sized buffers. And no
> interrupts as i do NAPI at all times, as this is a dedicated
> appliance. I keep all these buffers in the L1 cache and hence i have
> different sets of pools for different cores. I am currently guiding
> my engineers to implement the code changes now..
Yes, having a customizable/pluggable network stack sounds very useful.
In general, OpenSource projects like Linux don't give much incentive to
pluggable designs, because the source, being open, represents a weired form
of pluggability. Unfortunately, this "hack it up / code it hard" design
style usually inhibits healthy development.
A rethink is probably in place...
Thanks!
--
Al
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