mac80211: allocate TXQs for active monitor interfaces

Monitor mode interfaces with the active flag are passed down to the driver.
Drivers using TXQ expect that all interfaces have allocated TXQs before
they get added.

Fixes: 79af1f86 ("mac80211: avoid allocating TXQs that won't be used")
Cc: stable@vger.kernel.org
Reported-by: Catrinel Catrinescu <cc@80211.de>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/iface.c

@@ -1756,7 +1756,8 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
 
 		if (local->ops->wake_tx_queue &&
 		    type != NL80211_IFTYPE_AP_VLAN &&
-		    type != NL80211_IFTYPE_MONITOR)
+		    (type != NL80211_IFTYPE_MONITOR ||
+		     (params->flags & MONITOR_FLAG_ACTIVE)))
 			txq_size += sizeof(struct txq_info) +
 				    local->hw.txq_data_size;