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HT TDLS traffic should be protected in a non-HT BSS to avoid collisions. Therefore, when TDLS peers join/leave, check if protection is (now) needed and set the ht_operation_mode of the virtual interface according to the HT capabilities of the TDLS peer(s). This works because a non-HT BSS connection never sets (or otherwise uses) the ht_operation_mode; it just means that drivers must be aware that this field applies to all HT traffic for this virtual interface, not just the traffic within the BSS. Document that. Signed-off-by: Avri Altman <avri.altman@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>