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Commit 34a89b8c authored by Ajit Khaparde's avatar Ajit Khaparde Committed by David S. Miller
Browse files

be2net: bug fix in be_change_mtu 



Current code allows the new mtu to cross the supported value.
This patch fixes the boundary checks.

From: Suresh R <sureshr@serverengines.com>
Signed-off-by: default avatarAjit Khaparde <ajitk@serverengines.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3f0d4560

drivers/net/benet/be_main.c

+4 −2
Original line number Diff line number Diff line
@@ -473,10 +473,12 @@ static int be_change_mtu(struct net_device *netdev, int new_mtu) 
{

	struct be_adapter *adapter = netdev_priv(netdev);

	if (new_mtu < BE_MIN_MTU ||

			new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {

			new_mtu > (BE_MAX_JUMBO_FRAME_SIZE -

					(ETH_HLEN + ETH_FCS_LEN))) {

		dev_info(&adapter->pdev->dev,

			"MTU must be between %d and %d bytes\n",

			BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);

			BE_MIN_MTU,

			(BE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN)));

		return -EINVAL;

	}

	dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",