linux-kernel - Re: [PATCH v10 net-next 3/6] udp: add low latency socket poll support

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

Date:	Mon, 10 Jun 2013 12:38:20 -0400
From:	Willem de Bruijn <willemb@...gle.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Eliezer Tamir <eliezer.tamir@...ux.intel.com>,
	David Miller <davem@...emloft.net>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	netdev@...r.kernel.org,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	Don Skidmore <donald.c.skidmore@...el.com>,
	e1000-devel <e1000-devel@...ts.sourceforge.net>,
	Ben Hutchings <bhutchings@...arflare.com>,
	Andi Kleen <andi@...stfloor.org>, HPA <hpa@...or.com>,
	Eilon Greenstien <eilong@...adcom.com>,
	Or Gerlitz <or.gerlitz@...il.com>,
	Amir Vadai <amirv@...lanox.com>,
	Eliezer Tamir <eliezer@...ir.org.il>
Subject: Re: [PATCH v10 net-next 3/6] udp: add low latency socket poll support

On Mon, Jun 10, 2013 at 10:31 AM, Eric Dumazet <eric.dumazet@...il.com> wrote:
> On Mon, 2013-06-10 at 11:40 +0300, Eliezer Tamir wrote:
>> Add upport for busy-polling on UDP sockets.
>> In __udp[46]_lib_rcv add a call to sk_mark_ll() to copy the napi_id
>> from the skb into the sk.
>> This is done at the earliest possible moment, right after we identify
>> which socket this skb is for.
>> In __skb_recv_datagram When there is no data and the user
>> tries to read we busy poll.
>>
>> Signed-off-by: Alexander Duyck <alexander.h.duyck@...el.com>
>> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@...el.com>
>> Signed-off-by: Eliezer Tamir <eliezer.tamir@...ux.intel.com>
>> ---
>>
>>  net/core/datagram.c |    4 ++++
>>  net/ipv4/udp.c      |    6 +++++-
>>  net/ipv6/udp.c      |    6 +++++-
>>  3 files changed, 14 insertions(+), 2 deletions(-)
>
> Acked-by: Eric Dumazet <edumazet@...gle.com>
>

Tested-by: Willem de Bruijn <willemb@...gle.com>

(per Eliezer's request)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/