From: Eric Dumazet <erdnetdev@gmail.com>
To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
Sander Eikelenboom <linux@eikelenboom.it>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
annie li <annie.li@oracle.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: [PATCH] xen/netfront: improve truesize tracking
Date: Tue, 18 Dec 2012 08:13:00 -0800 [thread overview]
Message-ID: <1355847180.9380.21.camel@edumazet-glaptop> (raw)
In-Reply-To: <1355844398.14620.254.camel@zakaz.uk.xensource.com>
On Tue, 2012-12-18 at 15:26 +0000, Ian Campbell wrote:
> So actually we want += PAGE_SIZE * skb_shinfo(skb)->nr_frags ?
>
I dont know what are the real frag sizes in your case.
Some drivers allocate a full page for an ethernet frame, others use half
of a page, it really depends.
As the frag ABI doesnt contain real size, its ok in this case to account
the actual frag size.
(skb->data_len in your driver)
next prev parent reply other threads:[~2012-12-18 16:20 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-18 13:51 [PATCH] xen/netfront: improve truesize tracking Ian Campbell
2012-12-18 14:10 ` Konrad Rzeszutek Wilk
2012-12-18 14:15 ` Ian Campbell
2012-12-18 15:12 ` Eric Dumazet
2012-12-18 15:26 ` Ian Campbell
2012-12-18 16:13 ` Eric Dumazet [this message]
2012-12-18 16:22 ` Ian Campbell
2012-12-18 16:35 ` Eric Dumazet
2012-12-19 11:34 ` Sander Eikelenboom
2012-12-19 16:17 ` Eric Dumazet
2012-12-20 12:51 ` Sander Eikelenboom
2012-12-20 14:23 ` [Xen-devel] " Sander Eikelenboom
2012-12-20 14:58 ` Sander Eikelenboom
2012-12-20 15:39 ` Eric Dumazet
2012-12-21 11:21 ` Sander Eikelenboom
2012-12-21 18:33 ` Rick Jones
2013-01-03 20:40 ` Sander Eikelenboom
2013-01-07 13:41 ` Ian Campbell
2013-01-07 14:11 ` Sander Eikelenboom
2013-01-07 14:22 ` Ian Campbell
2013-01-07 15:26 ` Eric Dumazet
2013-01-07 16:17 ` Eric Dumazet
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