wifi: mac80211_hwsim: do rc update per link

Make mac80211_hwsim_sta_rc_update() iterate over all the STA links.

This is somewhat temporary, we really should add the link to the
API, but then hwsim still calls it internally and would need this.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/mac80211_hwsim.c

@@ -2263,9 +2263,22 @@ mac80211_hwsim_sta_rc_update(struct ieee80211_hw *hw,
 {
 	struct mac80211_hwsim_data *data = hw->priv;
 	u32 bw = U32_MAX;
+	int link_id;
+
+	rcu_read_lock();
+	for (link_id = 0;
+	     link_id < ARRAY_SIZE(vif->link_conf);
+	     link_id++) {
 		enum nl80211_chan_width confbw = NL80211_CHAN_WIDTH_20_NOHT;
+		struct ieee80211_bss_conf *vif_conf;
+		struct ieee80211_link_sta *link_sta;
+
+		link_sta = rcu_dereference(sta->link[link_id]);
+
+		if (!link_sta)
+			continue;
 
-	switch (sta->deflink.bandwidth) {
+		switch (link_sta->bandwidth) {
 #define C(_bw) case IEEE80211_STA_RX_BW_##_bw: bw = _bw; break
 		C(20);
 		C(40);
@@ -2280,18 +2293,26 @@ mac80211_hwsim_sta_rc_update(struct ieee80211_hw *hw,
 		} else {
 			struct ieee80211_chanctx_conf *chanctx_conf;
 
-		rcu_read_lock();
-		chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
+			vif_conf = rcu_dereference(vif->link_conf[link_id]);
+			if (WARN_ON(!vif_conf))
+				continue;
+
+			chanctx_conf = rcu_dereference(vif_conf->chanctx_conf);
 
 			if (!WARN_ON(!chanctx_conf))
 				confbw = chanctx_conf->def.width;
-		rcu_read_unlock();
 		}
 
 		WARN(bw > hwsim_get_chanwidth(confbw),
-	     "intf %pM: bad STA %pM bandwidth %d MHz (%d) > channel config %d MHz (%d)\n",
-	     vif->addr, sta->addr, bw, sta->deflink.bandwidth,
+		     "intf %pM [link=%d]: bad STA %pM bandwidth %d MHz (%d) > channel config %d MHz (%d)\n",
+		     vif->addr, link_id, sta->addr, bw, sta->deflink.bandwidth,
 		     hwsim_get_chanwidth(data->bw), data->bw);
+
+
+	}
+	rcu_read_unlock();
+
+
 }
 
 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,