linux-kernel - Re: [PATCH v3] ath10k: support NET

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Message-ID: <CA+ASDXNXZrBS8dZW4jmXkg7c8-sK=pcYtQtj5KPxCDCEc8XqYA@mail.gmail.com>
Date:   Wed, 2 Oct 2019 17:58:56 -0700
From:   Brian Norris <briannorris@...omium.org>
To:     Kalle Valo <kvalo@...eaurora.org>
Cc:     Wen Gong <wgong@....qualcomm.com>,
        linux-wireless <linux-wireless@...r.kernel.org>,
        Linux Kernel <linux-kernel@...r.kernel.org>,
        "ath10k@...ts.infradead.org" <ath10k@...ts.infradead.org>,
        Wen Gong <wgong@...eaurora.org>
Subject: Re: [PATCH v3] ath10k: support NET_DETECT WoWLAN feature

Hi Kalle,

Sorry, I failed to follow up on some of this.

On Fri, Sep 20, 2019 at 12:32 AM Kalle Valo <kvalo@...eaurora.org> wrote:
> But I mixed up the flags. I meant that can we enable
> NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR in ath10k? Does the firmware
> releases which have WMI_SERVICE_NLO support
> NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR as well?

I'm looking at firmware which supports WMI_SERVICE_NLO and
WMI_SERVICE_SPOOF_MAC_SUPPORT. This leads to support for
NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR and
NL80211_WOWLAN_TRIG_NET_DETECT (good!), but it also leads to
NL80211_CMD_START_SCHED_SCAN support and *not*
NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR, which is inconsistent
(bad!).

(I think a few times in here you noted the FEATURE_SCAN variant, when
you probably meant FEATURE_SCHED_SCAN.)

If I understand Wen correctly, he is working on dropping
NL80211_CMD_START_SCHED_SCAN, which would fix the inconsistency.

But I also noticed that ath10k does not support
NL80211_FEATURE_ND_RANDOM_MAC_ADDR, which is again an inconsistency:
we're going to lose randomization when in WoWLAN + NET_DETECT mode. I
don't suspect we (Chrome OS) would ever enable this feature in that
state.

Regards,
Brian