4 files changed, 16 insertions, 29 deletions

diff --git a/drivers/net/ethernet/ibm/ehea/ehea_main.c b/drivers/net/ethernet/ibm/ehea/ehea_main.c
index bd719e25dd76..fa66fa6f8bee 100644
--- a/drivers/net/ethernet/ibm/ehea/ehea_main.c
+++ b/drivers/net/ethernet/ibm/ehea/ehea_main.c
@@ -1981,14 +1981,6 @@ out:
 	ehea_update_bcmc_registrations();
 }
 
-static int ehea_change_mtu(struct net_device *dev, int new_mtu)
-{
-	if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
-		return -EINVAL;
-	dev->mtu = new_mtu;
-	return 0;
-}
-
 static void xmit_common(struct sk_buff *skb, struct ehea_swqe *swqe)
 {
 	swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT | EHEA_SWQE_CRC;
@@ -2970,7 +2962,6 @@ static const struct net_device_ops ehea_netdev_ops = {
 	.ndo_set_mac_address	= ehea_set_mac_addr,
 	.ndo_validate_addr	= eth_validate_addr,
 	.ndo_set_rx_mode	= ehea_set_multicast_list,
-	.ndo_change_mtu		= ehea_change_mtu,
 	.ndo_vlan_rx_add_vid	= ehea_vlan_rx_add_vid,
 	.ndo_vlan_rx_kill_vid	= ehea_vlan_rx_kill_vid,
 	.ndo_tx_timeout		= ehea_tx_watchdog,
@@ -3043,6 +3034,10 @@ static struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
 			NETIF_F_IP_CSUM;
 	dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
 
+	/* MTU range: 68 - 9022 */
+	dev->min_mtu = ETH_MIN_MTU;
+	dev->max_mtu = EHEA_MAX_PACKET_SIZE;
+
 	INIT_WORK(&port->reset_task, ehea_reset_port);
 	INIT_DELAYED_WORK(&port->stats_work, ehea_update_stats);
 
diff --git a/drivers/net/ethernet/ibm/emac/core.c b/drivers/net/ethernet/ibm/emac/core.c
index 8f139197f1aa..52a69c925965 100644
--- a/drivers/net/ethernet/ibm/emac/core.c
+++ b/drivers/net/ethernet/ibm/emac/core.c
@@ -1099,9 +1099,6 @@ static int emac_change_mtu(struct net_device *ndev, int new_mtu)
 	struct emac_instance *dev = netdev_priv(ndev);
 	int ret = 0;
 
-	if (new_mtu < EMAC_MIN_MTU || new_mtu > dev->max_mtu)
-		return -EINVAL;
-
 	DBG(dev, "change_mtu(%d)" NL, new_mtu);
 
 	if (netif_running(ndev)) {
@@ -2564,7 +2561,7 @@ static int emac_init_config(struct emac_instance *dev)
 	if (emac_read_uint_prop(np, "cell-index", &dev->cell_index, 1))
 		return -ENXIO;
 	if (emac_read_uint_prop(np, "max-frame-size", &dev->max_mtu, 0))
-		dev->max_mtu = 1500;
+		dev->max_mtu = ETH_DATA_LEN;
 	if (emac_read_uint_prop(np, "rx-fifo-size", &dev->rx_fifo_size, 0))
 		dev->rx_fifo_size = 2048;
 	if (emac_read_uint_prop(np, "tx-fifo-size", &dev->tx_fifo_size, 0))
@@ -2718,7 +2715,6 @@ static const struct net_device_ops emac_netdev_ops = {
 	.ndo_validate_addr	= eth_validate_addr,
 	.ndo_set_mac_address	= emac_set_mac_address,
 	.ndo_start_xmit		= emac_start_xmit,
-	.ndo_change_mtu		= eth_change_mtu,
 };
 
 static const struct net_device_ops emac_gige_netdev_ops = {
@@ -2891,6 +2887,10 @@ static int emac_probe(struct platform_device *ofdev)
 		ndev->netdev_ops = &emac_netdev_ops;
 	ndev->ethtool_ops = &emac_ethtool_ops;
 
+	/* MTU range: 46 - 1500 or whatever is in OF */
+	ndev->min_mtu = EMAC_MIN_MTU;
+	ndev->max_mtu = dev->max_mtu;
+
 	netif_carrier_off(ndev);
 
 	err = register_netdev(ndev);
diff --git a/drivers/net/ethernet/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c
index ebe60719e489..4a81c892fc31 100644
--- a/drivers/net/ethernet/ibm/ibmveth.c
+++ b/drivers/net/ethernet/ibm/ibmveth.c
@@ -1349,9 +1349,6 @@ static int ibmveth_change_mtu(struct net_device *dev, int new_mtu)
 	int i, rc;
 	int need_restart = 0;
 
-	if (new_mtu < IBMVETH_MIN_MTU)
-		return -EINVAL;
-
 	for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++)
 		if (new_mtu_oh <= adapter->rx_buff_pool[i].buff_size)
 			break;
@@ -1551,6 +1548,9 @@ static int ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id)
 		netdev->hw_features |= NETIF_F_TSO;
 	}
 
+	netdev->min_mtu = IBMVETH_MIN_MTU;
+	netdev->max_mtu = ETH_MAX_MTU;
+
 	memcpy(netdev->dev_addr, mac_addr_p, ETH_ALEN);
 
 	if (firmware_has_feature(FW_FEATURE_CMO))
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 4f3281a03e7e..1e486d1312e9 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -902,17 +902,6 @@ static int ibmvnic_set_mac(struct net_device *netdev, void *p)
 	return 0;
 }
 
-static int ibmvnic_change_mtu(struct net_device *netdev, int new_mtu)
-{
-	struct ibmvnic_adapter *adapter = netdev_priv(netdev);
-
-	if (new_mtu > adapter->req_mtu || new_mtu < adapter->min_mtu)
-		return -EINVAL;
-
-	netdev->mtu = new_mtu;
-	return 0;
-}
-
 static void ibmvnic_tx_timeout(struct net_device *dev)
 {
 	struct ibmvnic_adapter *adapter = netdev_priv(dev);
@@ -1029,7 +1018,6 @@ static const struct net_device_ops ibmvnic_netdev_ops = {
 	.ndo_set_rx_mode	= ibmvnic_set_multi,
 	.ndo_set_mac_address	= ibmvnic_set_mac,
 	.ndo_validate_addr	= eth_validate_addr,
-	.ndo_change_mtu		= ibmvnic_change_mtu,
 	.ndo_tx_timeout		= ibmvnic_tx_timeout,
 #ifdef CONFIG_NET_POLL_CONTROLLER
 	.ndo_poll_controller	= ibmvnic_netpoll_controller,
@@ -2639,10 +2627,12 @@ static void handle_query_cap_rsp(union ibmvnic_crq *crq,
 		break;
 	case MIN_MTU:
 		adapter->min_mtu = be64_to_cpu(crq->query_capability.number);
+		netdev->min_mtu = adapter->min_mtu;
 		netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu);
 		break;
 	case MAX_MTU:
 		adapter->max_mtu = be64_to_cpu(crq->query_capability.number);
+		netdev->max_mtu = adapter->max_mtu;
 		netdev_dbg(netdev, "max_mtu = %lld\n", adapter->max_mtu);
 		break;
 	case MAX_MULTICAST_FILTERS:
@@ -3668,6 +3658,8 @@ static void handle_crq_init_rsp(struct work_struct *work)
 
 	netdev->real_num_tx_queues = adapter->req_tx_queues;
 	netdev->mtu = adapter->req_mtu;
+	netdev->min_mtu = adapter->min_mtu;
+	netdev->max_mtu = adapter->max_mtu;
 
 	if (adapter->failover) {
 		adapter->failover = false;