On Mon, 2018-03-19 at 12:57 +1300, Ben Caradoc-Davies wrote:
> Commit 7b6ddeaf27ec ("mac80211: use QoS NDP for AP probing") adds an
> argument qos_ok to ieee80211_nullfunc_get to support QoS NDP. Despite
> the claim in the commit log "Change all the drivers to *not* allow
> QoS NDP for now, even though it looks like most of them should be OK
> with that", this commit enables QoS NDP in response to beacons (see
> change to mlme.c:ieee80211_send_nullfunc), causing ath9k_htc to lose
> IP connectivity. See:
> https://patchwork.kernel.org/patch/10241109/
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891060
>
> This patch replaces the argument qos_ok of ieee80211_nullfunc_get
> with an ieee80211_hw flag that drivers can use to declare support for
> QoS NDP, allowing consistent behaviour between mlme.c and drivers.
A version identifier (as in "[PATCH v3]" in the subject) would help :-)
I've applied a modified version of this patch - it will also require
setting the new "broken" flag in the driver.
johannes
