Re: [Xen-devel] [PATCH] xen/netfront: improve truesize tracking

[Eric Dumazet <erdnetdev@xxxxxxxxx>]

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)




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