ethernet/qlogic: use core min/max MTU checking

qede: min_mtu 46, max_mtu 9600
- Put define for max in qede.h

qlcnic: min_mtu 68, max_mtu 9600

CC: netdev@vger.kernel.org
CC Dept-GELinuxNICDev@qlogic.com
CC: Yuval Mintz <Yuval.Mintz@qlogic.com>
CC: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qede/qede.h

@@ -364,6 +364,7 @@ void qede_recycle_rx_bd_ring(struct qede_rx_queue *rxq, struct qede_dev *edev,
 
 #define QEDE_MIN_PKT_LEN		64
 #define QEDE_RX_HDR_SIZE		256
+#define QEDE_MAX_JUMBO_PACKET_SIZE	9600
 #define	for_each_queue(i) for (i = 0; i < edev->num_queues; i++)
 
 #endif /* _QEDE_H_ */

drivers/net/ethernet/qlogic/qede/qede_ethtool.c

@@ -723,19 +723,11 @@ static void qede_update_mtu(struct qede_dev *edev, union qede_reload_args *args)
 }
 
 /* Netdevice NDOs */
-#define ETH_MAX_JUMBO_PACKET_SIZE	9600
-#define ETH_MIN_PACKET_SIZE		60
 int qede_change_mtu(struct net_device *ndev, int new_mtu)
 {
 	struct qede_dev *edev = netdev_priv(ndev);
 	union qede_reload_args args;
 
-	if ((new_mtu > ETH_MAX_JUMBO_PACKET_SIZE) ||
-	    ((new_mtu + ETH_HLEN) < ETH_MIN_PACKET_SIZE)) {
-		DP_ERR(edev, "Can't support requested MTU size\n");
-		return -EINVAL;
-	}
-
 	DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN),
 		   "Configuring MTU size of %d\n", new_mtu);
 

drivers/net/ethernet/qlogic/qede/qede_main.c

@@ -2391,6 +2391,10 @@ static void qede_init_ndev(struct qede_dev *edev)
 
 	ndev->hw_features = hw_features;
 
+	/* MTU range: 46 - 9600 */
+	ndev->min_mtu = ETH_ZLEN - ETH_HLEN;
+	ndev->max_mtu = QEDE_MAX_JUMBO_PACKET_SIZE;
+
 	/* Set network device HW mac */
 	ether_addr_copy(edev->ndev->dev_addr, edev->dev_info.common.hw_mac);
 }

drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c

@@ -1024,12 +1024,6 @@ int qlcnic_change_mtu(struct net_device *netdev, int mtu)
 	struct qlcnic_adapter *adapter = netdev_priv(netdev);
 	int rc = 0;
 
-	if (mtu < P3P_MIN_MTU || mtu > P3P_MAX_MTU) {
-		dev_err(&adapter->netdev->dev, "%d bytes < mtu < %d bytes"
-			" not supported\n", P3P_MAX_MTU, P3P_MIN_MTU);
-		return -EINVAL;
-	}
-
 	rc = qlcnic_fw_cmd_set_mtu(adapter, mtu);
 
 	if (!rc)

drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c

@@ -2342,6 +2342,10 @@ qlcnic_setup_netdev(struct qlcnic_adapter *adapter, struct net_device *netdev,
 	netdev->priv_flags |= IFF_UNICAST_FLT;
 	netdev->irq = adapter->msix_entries[0].vector;
 
+	/* MTU range: 68 - 9600 */
+	netdev->min_mtu = P3P_MIN_MTU;
+	netdev->max_mtu = P3P_MAX_MTU;
+
 	err = qlcnic_set_real_num_queues(adapter, adapter->drv_tx_rings,
 					 adapter->drv_sds_rings);
 	if (err)