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Re: [PATCH] mac80211: support adding IV-room in the skb for CCMP keys

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On 10/23/2011 8:21 AM, Arik Nemtsov wrote:
Some cards can generate CCMP IVs in HW, but require the space for the IV
to be pre-allocated in the frame at the correct offset. Add a key flag
that allows us to achieve this.

Is it really that expensive to generate the IV and then not use it that this is worth the extra complexity? This not just makes it more complex but also more expensive in the other case.

johannes
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