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

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Message-ID: <1370874668.3252.4.camel@edumazet-glaptop>
Date:	Mon, 10 Jun 2013 07:31:08 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Eliezer Tamir <eliezer.tamir@...ux.intel.com>
Cc:	David Miller <davem@...emloft.net>, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	Don Skidmore <donald.c.skidmore@...el.com>,
	e1000-devel@...ts.sourceforge.net,
	Willem de Bruijn <willemb@...gle.com>,
	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, 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>


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