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e27036473d
[ Upstream commit a519be2f5d958c5804f2cfd68f1f384291271fab ]
When userspace brings down and deletes a non-transmitted profile,
it is expected to send a new updated Beacon template for the
transmitted profile of that multiple BSSID (MBSSID) group which
does not include the removed profile in MBSSID element. This
update comes via NL80211_CMD_SET_BEACON.
Such updates work well as long as the group continues to have at
least one non-transmitted profile as NL80211_ATTR_MBSSID_ELEMS
is included in the new Beacon template.
But when the last non-trasmitted profile is removed, it still
gets included in Beacon templates sent to driver. This happens
because when no MBSSID elements are sent by the userspace,
ieee80211_assign_beacon() ends up using the element stored from
earlier Beacon template.
Do not copy old MBSSID elements, instead userspace should always
include these when applicable.
Fixes: 2b3171c6fe ("mac80211: MBSSID beacon handling in AP mode")
Signed-off-by: Aloka Dixit <aloka.dixit@oss.qualcomm.com>
Link: https://patch.msgid.link/20251215174656.2866319-2-aloka.dixit@oss.qualcomm.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.