Commit 2ccd994c authored by Alexander Duyck's avatar Alexander Duyck Committed by Jeff Kirsher

igb: Update MTU so that it is always at least a standard frame size

This change makes it so that we limit the lower bound for max_frame_size to
the size of a standard Ethernet frame.  This allows for feature parity with
other Intel based drivers such as ixgbe.
Signed-off-by: default avatarAlexander Duyck <alexander.h.duyck@intel.com>
Tested-by: default avatarAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 50267196
...@@ -4813,6 +4813,10 @@ static int igb_change_mtu(struct net_device *netdev, int new_mtu) ...@@ -4813,6 +4813,10 @@ static int igb_change_mtu(struct net_device *netdev, int new_mtu)
return -EINVAL; return -EINVAL;
} }
/* adjust max frame to be at least the size of a standard frame */
if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN))
max_frame = ETH_FRAME_LEN + ETH_FCS_LEN;
while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
msleep(1); msleep(1);
......
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