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mac80211: Reset MBSSID parameters upon connection

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[ Upstream commit 86af062f40a73bf63321694e6bf637144f0383fe ]

Currently MBSSID parameters in struct ieee80211_bss_conf
are not reset upon connection. This could be problematic
with some drivers in a scenario where the device first
connects to a non-transmit BSS and then connects to a
transmit BSS of a Multi BSS AP. The MBSSID parameters
which are set after connecting to a non-transmit BSS will
not be reset and the same parameters will be passed on to
the driver during the subsequent connection to a transmit
BSS of a Multi BSS AP.

For example, firmware running on the ath11k device uses the
Multi BSS data for tracking the beacon of a non-transmit BSS
and reports the driver when there is a beacon miss. If we do
not reset the MBSSID parameters during the subsequent
connection to a transmit BSS, then the driver would have
wrong MBSSID data and FW would be looking for an incorrect
BSSID in the MBSSID beacon of a Multi BSS AP and reports
beacon loss leading to an unstable connection.

Reset the MBSSID parameters upon every connection to solve this
problem.

Fixes: 78ac51f815 ("mac80211: support multi-bssid")
Signed-off-by: Manikanta Pubbisetty <quic_mpubbise@quicinc.com>
Link: https://lore.kernel.org/r/20220428052744.27040-1-quic_mpubbise@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Manikanta Pubbisetty 2022-04-28 10:57:44 +05:30 committed by Greg Kroah-Hartman
parent 9cbf2a7d5d
commit c420d66047
1 changed files with 6 additions and 0 deletions
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6
net/mac80211/mlme.c
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@ -3528,6 +3528,12 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
cbss->transmitted_bss->bssid);
bss_conf->bssid_indicator = cbss->max_bssid_indicator;
bss_conf->bssid_index = cbss->bssid_index;
} else {
bss_conf->nontransmitted = false;
memset(bss_conf->transmitter_bssid, 0,
sizeof(bss_conf->transmitter_bssid));
bss_conf->bssid_indicator = 0;
bss_conf->bssid_index = 0;
}
/*