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Re: [PATCH v5] mac80211: implement multi-vif in-place reservations

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On Wed, 2014-05-07 at 15:08 +0300, Luca Coelho wrote:

> I was thinking about the case where you you need to involve 3 contexts.
> Let's say you have 2 vifs in the same context and after the switch you
> need to split them into 2 new ones (for instance, if there is some
> incompatibility in the new chandefs).
> 
> With the generic transactions you could do:
>  - new chanctx2
>  - new chanctx3
>  - switch vif1 chanctx1->chanctx2
>  - switch vif2 chanctx1->chanctx3
>  - del chanctx1

This isn't an interesting case, because it means you have a spare, so
you might as well do

 new chanctx3
 switch vif2 chanctx1->chanctx3
 switch_transaction(chanctx1, chanctx2, vif1)

johannes

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