From: Dan Williams <dcbw@redhat.com>
To: Roshanak Rasoli <mrs.roshanak@gmail.com>
Cc: linux-wireless@vger.kernel.org
Subject: Re: wireless driver ath9k and module 80211 interaction
Date: Fri, 17 Apr 2015 11:24:17 -0500 [thread overview]
Message-ID: <1429287857.20604.13.camel@redhat.com> (raw)
In-Reply-To: <CAGpeqH3J4BvcDjWfVfxeHKj=aY=B3HYjerfN2ZbBQ3WFUQKBWg@mail.gmail.com>
On Fri, 2015-04-17 at 18:01 +0200, Roshanak Rasoli wrote:
> Hi experts,
>
> I have a question about the code that you wrote;
>
> 1- How does the ath9k announce itself to the mac80211?
The ath9k driver handles its own hardware detection via normal kernel
probing and matching mechanisms, and you end up in
drivers/net/wireless/ath/ath9k/pci.c::ath_pci_probe() or ath_ahb_probe()
depending on the bus the device uses. From there ath9k calls
ieee80211_alloc_hw() which is how ath9k "announces" itself to mac80211.
> 2- How can the mac80211 know how to configure the ath9k.
The hardware module (ath9k) sends a set of "ops" (struct ieee80211_ops)
to mac80211 in the ieee80211_alloc_hw() call that contains callbacks
that mac80211 will run when it needs to configure the device. See
drivers/net/wireless/ath/ath9k/main.c for the ath9k_ops structure.
Dan
> Could you please point out to the code.
>
> Thanks in advance.
> --
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prev parent reply other threads:[~2015-04-17 16:23 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-17 16:01 wireless driver ath9k and module 80211 interaction Roshanak Rasoli
2015-04-17 16:24 ` Dan Williams [this message]
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