Handling packets from kernel click to user process

[Douglas S. J. De Couto]

> Am I correct by saying that the Click FromDevice (userlevel) is written
> directly on top of the packet sockets in the case of Linux (for other
> systems via libpcap) because you could then use non blocking sockets and
> that for Linux libpcap isn't needed (neither for compilation nor for
> running userlevel click) ?

at one point last year, there was a latency problem using the linux
pcap implementation with click.  so we put the packet socket support
into FromDevice.u.  pcap may now be satisfactory...  but i vote for:
if it ain't broke, don't fix it...

d

-- 
Douglas S. J. De Couto    decouto at lcs.mit.edu