netdev - Re: No SO_BUSY

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <5508BE0C.7060103@in.tum.de>
Date:	Wed, 18 Mar 2015 00:51:40 +0100
From:	Lukas Erlacher <erlacher@...tum.de>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	netdev <netdev@...r.kernel.org>
Subject: Re: No SO_BUSY_POLL for UDP?

On 03/18/2015 12:20 AM, Eric Dumazet wrote:
> 
> busypoll should be available on _connected_ UDP sockets. Otherwise, we
> would have to look all RX queues of the NIC, not a single one.
> 
> Try netperf  -t UDP_RR -- -N -n
> 
>     -n                Use the connected socket for UDP locally
>     -N                Use the connected socket for UDP remotely
> 
> (Although I believe netserver->netperf is ignoring the -N option, that
> is a netperf bug)
> 
> check with ss -a|grep udp
> 

Thank you very much, I was missing that bit of info. With connected
sockets, busy polling works perfectly.

Best,
Lukas Erlacher
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html