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wifi: mac80211: Fix bssid_indicator for MBSSID in AP mode

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Currently, in ieee80211_assign_beacon() mbssid count is updated as link's
bssid_indicator. mbssid count is the total number of MBSSID elements in
the beacon instead of Max BSSID indicator of the Multiple BSS set.
This will result in drivers obtaining an invalid bssid_indicator for BSSes
in a Multiple BSS set.
Fix this by updating link's bssid_indicator from MBSSID element for
Transmitting BSS and update the same for all of its Non-Transmitting BSSes.

Fixes: dde78aa520 ("mac80211: update bssid_indicator in ieee80211_assign_beacon")
Signed-off-by: Rameshkumar Sundaram <rameshkumar.sundaram@oss.qualcomm.com>
Link: https://patch.msgid.link/20250530040940.3188537-1-rameshkumar.sundaram@oss.qualcomm.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Rameshkumar Sundaram 2025-05-30 09:39:40 +05:30 committed by Johannes Berg
parent c9172fae4b
commit 2eb7c1baf4
1 changed files with 6 additions and 2 deletions
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8
net/mac80211/cfg.c
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@ -178,6 +178,7 @@ static int ieee80211_set_ap_mbssid_options(struct ieee80211_sub_if_data *sdata,
link_conf->nontransmitted = true;
link_conf->bssid_index = params->index;
link_conf->bssid_indicator = tx_bss_conf->bssid_indicator;
}
if (params->ema)
link_conf->ema_ap = true;
@ -1218,8 +1219,11 @@ ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
ieee80211_copy_rnr_beacon(pos, new->rnr_ies, rnr);
}
/* update bssid_indicator */
link_conf->bssid_indicator =
ilog2(__roundup_pow_of_two(mbssid->cnt + 1));
if (new->mbssid_ies->cnt && new->mbssid_ies->elem[0].len > 2)
link_conf->bssid_indicator =
*(new->mbssid_ies->elem[0].data + 2);
else
link_conf->bssid_indicator = 0;
}
if (csa) {