wifi: mac80211_hwsim: skip inactive links on TX

With the link activation handling in mac80211, skip
any inactive links on TX.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/mac80211_hwsim.c

@@ -1734,6 +1734,9 @@ mac80211_hwsim_select_tx_link(struct mac80211_hwsim_data *data,
 		/* round-robin the available link IDs */
 		link_id = (sp->last_link + i + 1) % ARRAY_SIZE(vif->link_conf);
 
+		if (!(vif->active_links & BIT(link_id)))
+			continue;
+
 		*link_sta = rcu_dereference(sta->link[link_id]);
 		if (!*link_sta)
 			continue;
@@ -1742,6 +1745,10 @@ mac80211_hwsim_select_tx_link(struct mac80211_hwsim_data *data,
 		if (WARN_ON_ONCE(!bss_conf))
 			continue;
 
+		/* can happen while switching links */
+		if (!rcu_access_pointer(bss_conf->chanctx_conf))
+			continue;
+
 		sp->last_link = link_id;
 		return bss_conf;
 	}