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Commit 42c783c5 authored by Jesse Brandeburg's avatar Jesse Brandeburg Committed by Jeff Garzik
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ixgbe: limit small mtu to minimum for ipv4 support 



Signed-off-by: default avatarJesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent f47cf66e

drivers/net/ixgbe/ixgbe_main.c

+2 −2
Original line number Original line Diff line number Diff line
@@ -2839,8 +2839,8 @@ static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu) 
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;

	int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;





	if ((max_frame < (ETH_ZLEN + ETH_FCS_LEN)) ||

	/* MTU < 68 is an error and causes problems on some kernels */

	    (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))

	if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))

		return -EINVAL;

		return -EINVAL;





	DPRINTK(PROBE, INFO, "changing MTU from %d to %d\n",

	DPRINTK(PROBE, INFO, "changing MTU from %d to %d\n",