ethernet/ibm: use core min/max MTU checking

ehea: min_mtu 68, max_mtu 9022
- remove ehea_change_mtu, it's now redundant

emac: min_mtu 46, max_mtu 1500 or whatever gets read from OF

CC: netdev@vger.kernel.org
CC: Douglas Miller <dougmill@linux.vnet.ibm.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/ibm/ehea/ehea_main.c b/drivers/net/ethernet/ibm/ehea/ehea_main.c
index 54efa9a..e9719ba 100644 (file)
--- 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;
@@ -2968,7 +2960,6 @@ 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,
@@ -3041,6 +3032,10 @@ 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 5d804a5..52a69c9 100644 (file)
--- 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))
@@ -2890,6 +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);