wifi: mac80211: Notify the low level driver on change in MLO valid links

Notify the low level driver when there is change in the valid links.

Signed-off-by: Ilan Peer <[email protected]>
Signed-off-by: Gregory Greenman <[email protected]>
Link: https://lore.kernel.org/r/20230920211508.4fc85b0a51b0.I64238e0e892709a2bd4764b3bca93cdcf021e2fd@changeid
Signed-off-by: Johannes Berg <[email protected]>

Author: ilanpeer2

include/net/mac80211.h

@@ -341,6 +341,7 @@ struct ieee80211_vif_chanctx_switch {
  * @BSS_CHANGED_UNSOL_BCAST_PROBE_RESP: Unsolicited broadcast probe response
  *	status changed.
  * @BSS_CHANGED_EHT_PUNCTURING: The channel puncturing bitmap changed.
+ * @BSS_CHANGED_MLD_VALID_LINKS: MLD valid links status changed.
  */
 enum ieee80211_bss_change {
 	BSS_CHANGED_ASSOC		= 1<<0,
@@ -376,6 +377,7 @@ enum ieee80211_bss_change {
 	BSS_CHANGED_FILS_DISCOVERY      = 1<<30,
 	BSS_CHANGED_UNSOL_BCAST_PROBE_RESP = 1<<31,
 	BSS_CHANGED_EHT_PUNCTURING	= BIT_ULL(32),
+	BSS_CHANGED_MLD_VALID_LINKS	= BIT_ULL(33),
 
 	/* when adding here, make sure to change ieee80211_reconfig */
 };

net/mac80211/main.c

@@ -207,7 +207,8 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
 				   BSS_CHANGED_PS |\
 				   BSS_CHANGED_IBSS |\
 				   BSS_CHANGED_ARP_FILTER |\
-				   BSS_CHANGED_SSID)
+				   BSS_CHANGED_SSID |\
+				   BSS_CHANGED_MLD_VALID_LINKS)
 
 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
 				      u64 changed)

net/mac80211/mlme.c

@@ -5713,6 +5713,8 @@ static void ieee80211_ml_reconf_work(struct wiphy *wiphy,
 	if (ret)
 		sdata_info(sdata, "Failed setting valid links\n");
 
+	ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_MLD_VALID_LINKS);
+
 out:
 	if (!ret)
 		cfg80211_links_removed(sdata->dev, sdata->u.mgd.removed_links);