Re: [RFC] mac80211: don't use if_id, use if_priv

[Johannes Berg <johannes@sipsolutions.net>]

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> Note that a good chunk of the if_id stuff in the api was just brain damage 
> from the ERP info changes. Anywhere we have access to a skb, we have access 
> to a netdev, and we don't need an extra if_id argument to tell us what we 
> need to know. I would love to see that get fixed first as that simplifies all 
> drivers.

True enough. But do we want to have drivers rely on that? Right now,
what parts of the patch do is use the tx_control->if_priv field for
getting back to mac80211 about e.g. CTS/RTS duration. That's not
something we should be requiring an SKB for.

> Having said that, a per-interface private area for drivers is a great idea if 
> drivers need it. They probably do.

So far I've been able to do without it in b43/multi-BSS code but I think
that more interesting things may need it so...

johannes

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