In the case of of 5 GHz + non-tx 6 GHz MLO connection, the scan entry
generated from the ML-probe might not carry MBSSID information of the
non-tx partner. The RNR of the assoc link will also not be inherited.
Therefore, the mbssid info is not generated for this non-tx 6 GHz scan
entry. In such cases, if there is a vdev restart, host driver sends zero
mac address in trans bssid, leading to issues with connection.
To fix this:
1. Look up the RNR db for the 6 GHz link, and determine if the bss param
corresponding to the bssid is non-tx MBSSID.
2. If it is a non-tx MBSSID and there is no mbssid info in the scan cache,
then configure the tx-bssid as broadcast mac.
3. This allows the firmware to auto-detect the tx bssid from the upcoming
beacons.
4. Also, save the neighbor entries from the beacon/probes received from
the firmware during roam sync and other events to facilitate the look-up.
5. If there is no existing entry for the roamed non-tx link, then caching
the neighbor info from the assoc partner link would store the valid entry
into the rnr db.
Change-Id: Ie5ef03fc8504cd63f6db98d2ce4af7eb5c2d7e00
CRs-Fixed: 3789675
99ad149bb6