On Tue, Jun 12, 2007 at 01:58:25PM +0000, ITOH Yasufumi wrote:
> (Note FreeBSD passes packets to different kernel thread, which I did NOT
> adopt or now.  That is because I'm not sure it is really necessary,
> and it enforces more context switchings per packet and probably causes
> large latency and poor performace.)

The main reason is the locking / spl protection between USB stack and
network stack. So be careful with this. A softint would be a proper
solution.

Joerg