From: Alexander Aring <alex.aring@gmail.com>
To: Martin Townsend <martin.townsend@xsilon.com>
Cc: Martin Townsend <mtownsend1973@gmail.com>,
linux-bluetooth@vger.kernel.org, linux-wpan@vger.kernel.org,
marcel@holtmann.org, jukka.rissanen@linux.intel.com
Subject: Re: [PATCH v4 bluetooth-next] 6lowpan: Use pskb_expand_head in IPHC decompression.
Date: Wed, 8 Oct 2014 17:27:52 +0200 [thread overview]
Message-ID: <20141008152750.GB23456@omega> (raw)
In-Reply-To: <543553AD.9000501@xsilon.com>
On Wed, Oct 08, 2014 at 04:09:33PM +0100, Martin Townsend wrote:
> Hi Alex,
>
> I completely missed it, unless reassembly can result in a shared skb? can you confirm that it doesn't then I'll remove the line.
>
No, we manipulate the skb data there. We fetch the fragment header.
See [0].
This require a unshared buffer between af_802154 and 6lowpan. Also on
LOWPAN_DISPATCH_IPV6 we fetch the one byte dispatch value.
- Alex
[0] http://lxr.free-electrons.com/source/net/ieee802154/reassembly.c#L328
next prev parent reply other threads:[~2014-10-08 15:27 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-08 13:46 [PATCH v4 bluetooth-next] 6lowpan: Use pskb_expand_head in IPHC decompression Martin Townsend
2014-10-08 13:46 ` Martin Townsend
2014-10-08 14:59 ` Alexander Aring
2014-10-08 15:09 ` Martin Townsend
2014-10-08 15:27 ` Alexander Aring [this message]
2014-10-08 15:30 ` Martin Townsend
2014-10-09 7:18 ` Jukka Rissanen
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