[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20090115233205.GA8474@gondor.apana.org.au>
Date: Fri, 16 Jan 2009 10:32:05 +1100
From: Herbert Xu <herbert@...dor.apana.org.au>
To: David Miller <davem@...emloft.net>
Cc: w@....eu, jarkao2@...il.com, zbr@...emap.net, dada1@...mosbay.com,
ben@...s.com, mingo@...e.hu, linux-kernel@...r.kernel.org,
netdev@...r.kernel.org, jens.axboe@...cle.com
Subject: Re: [PATCH] tcp: splice as many packets as possible at once
On Thu, Jan 15, 2009 at 03:26:08PM -0800, David Miller wrote:
>
> New patch, this has the SKB clone removal as well:
Thanks Dave!
Something else just came to mind though.
> +static inline struct page *linear_to_page(struct page *page, unsigned int len,
> + unsigned int offset)
> +{
> + struct page *p = alloc_pages(GFP_KERNEL, 0);
> +
> + if (!p)
> + return NULL;
> + memcpy(page_address(p) + offset, page_address(page) + offset, len);
This won't work very well if skb->head is longer than a page.
We'll need to divide it up into individual pages.
Cheers,
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
--
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/
Powered by blists - more mailing lists