Subject: Re: 80Mbps routing with Micrel KS8695
To: Toru Nishimura <firstname.lastname@example.org>
From: Jesse Off <joff@embeddedARM.com>
Date: 01/12/2005 21:30:15
Impressive indeed. One concession to performance that had to made in the
ep93xx ethernet driver is that the MAC had the requirement of buffers
being at an aligned-by-4-byte address and it seems the default mbuf data
area is only aligned by 2 bytes. On packets for transmit that aren't in a
mbuf cluster, one has to copy the entire mbuf chain.
> A NetBSD port is achieving 80Mbps IP routing. With the humble
> 166MHz ARM9 core IP routing is smart enough by off-the-shelf
> protocol stack and unoptimized plain straightforward Ethernet
> driver. More turning is expected.
> Toru Nishimura/ALKYL Technology, a NetBSD company