On Fri, 20 Jun 2003, Adam Flizikowski wrote:
> i have a problem. I need to identify packets (IPv6) across the linux
> networking code.
> But there is no ID field as it used to be in ipv4.. what would you advice to
> distinguish packets on its way through linux router?
> One restriction is not to change the payload of the packet bcause it
> requires full memory read to get pkt. id from payload data..
>
> what is your point of view..?
You don't state what *exactly* you want to identify.
Because you menation IPv4 ID field, I take it you want to tell "flows"
apart.
Look at the source/destanation -pair, and in the future, also the 20-bit
flow label field (already being set by certain hosts); you can already
start looking up at {src,dest,flowid} -tuple, even though the last one is
still mostly zero.
I don't know if there are any Linux -specific tricks which might help you
here.
--
Pekka Savola "You each name yourselves king, yet the
Netcore Oy kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings
-
: send the line "unsubscribe linux-net" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
