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mac80211 and ath9k channel context

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Hi,

The channel context is mentioned in lots of mails and pieces of code, but its significance or goal is never mentioned. Could someone please be so kind to elaborate on this?

I believe the channel context is used to provide some hardware abstraction towards the driver and mac, such that virtual interfaces are able to work "in parallel" (to their knowledge they are the sole users) on the hardware, even when they use different channels. When a virtual interface needs to perform some action (transmission,...), the channel is set to the corresponding channel of the interface. Furthermore is the activation of virtual interfaces done in a round robin manner, where each channel in the channel context is activated at a periodic interval.

Is this about correct, or am I gravely mistaken?

Thanks,

Kind regards,
Wim.
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