wifi: mac80211: use link ID for MLO in queued frames

When queuing frames to an interface store the link ID we
determined (which possibly came from the driver in the
RX status in the first place) in the RX status, and use
it in the MLME code to send probe responses, beacons and
CSA frames to the right link.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/mlme.c

@@ -5671,6 +5671,13 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
 
 	sdata_lock(sdata);
 
+	if (rx_status->link_valid) {
+		link = sdata_dereference(sdata->link[rx_status->link_id],
+					 sdata);
+		if (!link)
+			goto out;
+	}
+
 	switch (fc & IEEE80211_FCTL_STYPE) {
 	case IEEE80211_STYPE_BEACON:
 		ieee80211_rx_mgmt_beacon(link, (void *)mgmt,
@@ -5747,6 +5754,7 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
 		}
 		break;
 	}
+out:
 	sdata_unlock(sdata);
 }
 

net/mac80211/rx.c

@@ -215,9 +215,19 @@ ieee80211_rx_radiotap_hdrlen(struct ieee80211_local *local,
 }
 
 static void __ieee80211_queue_skb_to_iface(struct ieee80211_sub_if_data *sdata,
+					   int link_id,
 					   struct sta_info *sta,
 					   struct sk_buff *skb)
 {
+	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
+
+	if (link_id >= 0) {
+		status->link_valid = 1;
+		status->link_id = link_id;
+	} else {
+		status->link_valid = 0;
+	}
+
 	skb_queue_tail(&sdata->skb_queue, skb);
 	ieee80211_queue_work(&sdata->local->hw, &sdata->work);
 	if (sta)
@@ -225,11 +235,12 @@ static void __ieee80211_queue_skb_to_iface(struct ieee80211_sub_if_data *sdata,
 }
 
 static void ieee80211_queue_skb_to_iface(struct ieee80211_sub_if_data *sdata,
+					 int link_id,
 					 struct sta_info *sta,
 					 struct sk_buff *skb)
 {
 	skb->protocol = 0;
-	__ieee80211_queue_skb_to_iface(sdata, sta, skb);
+	__ieee80211_queue_skb_to_iface(sdata, link_id, sta, skb);
 }
 
 static void ieee80211_handle_mu_mimo_mon(struct ieee80211_sub_if_data *sdata,
@@ -272,7 +283,7 @@ static void ieee80211_handle_mu_mimo_mon(struct ieee80211_sub_if_data *sdata,
 	if (!skb)
 		return;
 
-	ieee80211_queue_skb_to_iface(sdata, NULL, skb);
+	ieee80211_queue_skb_to_iface(sdata, -1, NULL, skb);
 }
 
 /*
@@ -1394,7 +1405,7 @@ static void ieee80211_rx_reorder_ampdu(struct ieee80211_rx_data *rx,
 	/* if this mpdu is fragmented - terminate rx aggregation session */
 	sc = le16_to_cpu(hdr->seq_ctrl);
 	if (sc & IEEE80211_SCTL_FRAG) {
-		ieee80211_queue_skb_to_iface(rx->sdata, NULL, skb);
+		ieee80211_queue_skb_to_iface(rx->sdata, rx->link_id, NULL, skb);
 		return;
 	}
 
@@ -3044,7 +3055,8 @@ ieee80211_rx_h_data(struct ieee80211_rx_data *rx)
 		    (tf->action_code == WLAN_TDLS_CHANNEL_SWITCH_REQUEST ||
 		     tf->action_code == WLAN_TDLS_CHANNEL_SWITCH_RESPONSE)) {
 			rx->skb->protocol = cpu_to_be16(ETH_P_TDLS);
-			__ieee80211_queue_skb_to_iface(sdata, rx->sta, rx->skb);
+			__ieee80211_queue_skb_to_iface(sdata, rx->link_id,
+						       rx->sta, rx->skb);
 			return RX_QUEUED;
 		}
 	}
@@ -3634,7 +3646,7 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
 	return RX_QUEUED;
 
  queue:
-	ieee80211_queue_skb_to_iface(sdata, rx->sta, rx->skb);
+	ieee80211_queue_skb_to_iface(sdata, rx->link_id, rx->sta, rx->skb);
 	return RX_QUEUED;
 }
 
@@ -3792,7 +3804,7 @@ ieee80211_rx_h_ext(struct ieee80211_rx_data *rx)
 		return RX_DROP_MONITOR;
 
 	/* for now only beacons are ext, so queue them */
-	ieee80211_queue_skb_to_iface(sdata, rx->sta, rx->skb);
+	ieee80211_queue_skb_to_iface(sdata, rx->link_id, rx->sta, rx->skb);
 
 	return RX_QUEUED;
 }
@@ -3849,7 +3861,7 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx)
 		return RX_DROP_MONITOR;
 	}
 
-	ieee80211_queue_skb_to_iface(sdata, rx->sta, rx->skb);
+	ieee80211_queue_skb_to_iface(sdata, rx->link_id, rx->sta, rx->skb);
 
 	return RX_QUEUED;
 }