forked from luck/tmp_suning_uos_patched
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: Ajit Khaparde <ajitk@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -473,10 +473,12 @@ static int be_change_mtu(struct net_device *netdev, int new_mtu)
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{
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struct be_adapter *adapter = netdev_priv(netdev);
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if (new_mtu < BE_MIN_MTU ||
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new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
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new_mtu > (BE_MAX_JUMBO_FRAME_SIZE -
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(ETH_HLEN + ETH_FCS_LEN))) {
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dev_info(&adapter->pdev->dev,
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"MTU must be between %d and %d bytes\n",
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BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
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BE_MIN_MTU,
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(BE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN)));
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return -EINVAL;
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}
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dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
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