From: Thomas Graf <tgraf@suug.ch>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David Miller <davem@davemloft.net>, netdev <netdev@vger.kernel.org>
Subject: Re: [PATCH net-next] netlink: autosize skb lengthes
Date: Mon, 10 Mar 2014 09:41:23 +0000 [thread overview]
Message-ID: <20140310094123.GA2396@casper.infradead.org> (raw)
In-Reply-To: <1394222553.20149.40.camel@edumazet-glaptop2.roam.corp.google.com>
On 03/07/14 at 12:02pm, Eric Dumazet wrote:
> From: Eric Dumazet <edumazet@google.com>
>
> One known problem with netlink is the fact that NLMSG_GOODSIZE is
> really small on PAGE_SIZE==4096 architectures, and it is difficult
> to know in advance what buffer size is used by the application.
>
> This patch adds an automatic learning of the size.
>
> First netlink message will still be limited to ~4K, but if user used
> bigger buffers, then following messages will be able to use up to 16KB.
>
> This speedups dump() operations by a large factor and should be safe
> for legacy applications.
>
> Signed-off-by: Eric Dumazet <edumazet@google.com>
> Cc: Thomas Graf <tgraf@suug.ch>
> Google-Bug-Id: 13305844
Acked-by: Thomas Graf <tgraf@suug.ch>
next prev parent reply other threads:[~2014-03-10 10:01 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-07 20:02 [PATCH net-next] netlink: autosize skb lengthes Eric Dumazet
2014-03-10 9:41 ` Thomas Graf [this message]
2014-03-10 17:56 ` David Miller
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