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

drivers/net/ethernet/intel/igb/igb_main.c

+4 −0
Original line number Diff line number Diff line
@@ -4813,6 +4813,10 @@ static int igb_change_mtu(struct net_device *netdev, int new_mtu) 
		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))

		msleep(1);