wifi: iwlwifi: adjust rx_phyinfo debugfs to MLO

This debugfs entry is used to configure the rx_phyinfo.
Currently we are sending the phy cmd only for the deflink.
Change it to send the cmd for all active links of the vif
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Reviewed-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://msgid.link/20240204235836.a68ee2b6cb58.Iddc47c608ec990b12be0ae5b1ee89bcf6beb0f6a@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c

@@ -578,34 +578,46 @@ static ssize_t iwl_dbgfs_rx_phyinfo_write(struct ieee80211_vif *vif, char *buf,
 {
 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 	struct iwl_mvm *mvm = mvmvif->mvm;
-	struct ieee80211_chanctx_conf *chanctx_conf;
-	struct iwl_mvm_phy_ctxt *phy_ctxt;
+	struct ieee80211_bss_conf *link_conf;
 	u16 value;
-	int ret;
+	int link_id, ret = -EINVAL;
 
 	ret = kstrtou16(buf, 0, &value);
 	if (ret)
 		return ret;
 
 	mutex_lock(&mvm->mutex);
-	rcu_read_lock();
 
-	chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
-	/* make sure the channel context is assigned */
-	if (!chanctx_conf) {
+	mvm->dbgfs_rx_phyinfo = value;
+
+	for_each_vif_active_link(vif, link_conf, link_id) {
+		struct ieee80211_chanctx_conf *chanctx_conf;
+		struct cfg80211_chan_def min_def;
+		struct iwl_mvm_phy_ctxt *phy_ctxt;
+		u8 chains_static, chains_dynamic;
+
+		rcu_read_lock();
+		chanctx_conf = rcu_dereference(link_conf->chanctx_conf);
+		if (!chanctx_conf) {
+			rcu_read_unlock();
+			continue;
+		}
+		/* A command can't be sent with RCU lock held, so copy
+		 * everything here and use it after unlocking
+		 */
+		min_def = chanctx_conf->min_def;
+		chains_static = chanctx_conf->rx_chains_static;
+		chains_dynamic = chanctx_conf->rx_chains_dynamic;
 		rcu_read_unlock();
-		mutex_unlock(&mvm->mutex);
-		return -EINVAL;
-	}
 
-	phy_ctxt = &mvm->phy_ctxts[*(u16 *)chanctx_conf->drv_priv];
-	rcu_read_unlock();
+		phy_ctxt = mvmvif->link[link_id]->phy_ctxt;
+		if (!phy_ctxt)
+			continue;
 
-	mvm->dbgfs_rx_phyinfo = value;
+		ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &min_def,
+					       chains_static, chains_dynamic);
+	}
 
-	ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chanctx_conf->min_def,
-				       chanctx_conf->rx_chains_static,
-				       chanctx_conf->rx_chains_dynamic);
 	mutex_unlock(&mvm->mutex);
 
 	return ret ?: count;