[PATCH v4 10/15] mbssid: make the AID space shared

[Aloka Dixit]

As described in IEEE Std 802.11-2020 11.1.3.8 Multiple BSSID procedure,
set the lowest AID value assigned to any client equal to 2^n,
where n is the maximum BSSID indicator of the MBSSID set.

Signed-off-by: Aloka Dixit <quic_alokad at quicinc.com>
Co-developed-by: John Crispin <john at phrozen.org>
Signed-off-by: John Crispin <john at phrozen.org>
---
 src/ap/ieee802_11.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/ap/ieee802_11.c b/src/ap/ieee802_11.c
index 55175dc6dc5c..44c5e8062055 100644
--- a/src/ap/ieee802_11.c
+++ b/src/ap/ieee802_11.c
@@ -3159,7 +3159,10 @@ int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
 	}
 	if (j == 32)
 		return -1;
-	aid = i * 32 + j + 1;
+	aid = i * 32 + j;
+
+	aid += (1 << hostapd_max_bssid_indicator(hapd));
+
 	if (aid > 2007)
 		return -1;
 
-- 
2.25.1