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authorJesse Brandeburg <jesse.brandeburg@intel.com>2008-09-11 19:56:28 -0700
committerJeff Garzik <jgarzik@redhat.com>2008-09-24 18:54:51 -0400
commit42c783c5b1b755ae2ab2dec720ad58ffc2257a60 (patch)
tree5a6960af294aab7a9a08145836944e7f58ee7b46 /drivers/net/ixgbe
parentf47cf66e9cc778d21533c681e89b4034ed2d8666 (diff)
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>
Diffstat (limited to 'drivers/net/ixgbe')
-rw-r--r--drivers/net/ixgbe/ixgbe_main.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index cfaa3ca28f5..2c8895e9dae 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -2839,8 +2839,8 @@ static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu)
struct ixgbe_adapter *adapter = netdev_priv(netdev);
int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
- if ((max_frame < (ETH_ZLEN + ETH_FCS_LEN)) ||
- (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))
+ /* MTU < 68 is an error and causes problems on some kernels */
+ if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))
return -EINVAL;
DPRINTK(PROBE, INFO, "changing MTU from %d to %d\n",