Why newstate handler runs IEEE80211_LOCK/UNLOCK?

Reply: Adrian Chadd : "Re: Why newstate handler runs IEEE80211_LOCK/UNLOCK?"
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From: Farhan Khan <farhan_at_farhan.codes>
Date: Thu, 30 Nov 2023 06:12:08 UTC

Hi all,

I'm studying the implementations of net80211 and noticed that in all newstate handlers the code begins by running IEEE80211_UNLOCK(ic) and ends with IEEE80211_LOCK(ic). I was not clear on why this was, I would have expected the opposite order. Also, why not just use the softc device-wide mutex over one for ieee80211com. Overall, I do not seem to understand the intent of the unlock and am seeking clarification.

Thank you,
--
Farhan Khan
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