ixgbe: limit small mtu to minimum for ipv4 support
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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@ -2839,8 +2839,8 @@ static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu)
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struct ixgbe_adapter *adapter = netdev_priv(netdev);
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int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
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if ((max_frame < (ETH_ZLEN + ETH_FCS_LEN)) ||
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(max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))
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/* MTU < 68 is an error and causes problems on some kernels */
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if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))
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return -EINVAL;
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DPRINTK(PROBE, INFO, "changing MTU from %d to %d\n",
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