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| author | Ajit Khaparde <ajitkhaparde@gmail.com> | 2010-02-09 01:32:43 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-02-12 12:27:58 -0800 |
| commit | 34a89b8c75abe2873a95524552cc266fdd3b6a85 (patch) | |
| tree | fc1af457d8100289e6a5798dcd3902c8a20d89e3 | |
| parent | 3f0d4560aedaa67546eaeb3dc75fcdf68ec21036 (diff) | |
| download | blackbird-op-linux-34a89b8c75abe2873a95524552cc266fdd3b6a85.tar.gz blackbird-op-linux-34a89b8c75abe2873a95524552cc266fdd3b6a85.zip | |
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>
| -rw-r--r-- | drivers/net/benet/be_main.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c index 99061488eeb3..c65c63427d41 100644 --- a/drivers/net/benet/be_main.c +++ b/drivers/net/benet/be_main.c @@ -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", |
