From: Bruce Allan Date: Sat, 9 Aug 2008 01:36:06 +0000 (-0700) Subject: e1000e: increase minimum frame size allowed X-Git-Tag: v2.6.27-rc4~39^2~48^2~18 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=d53f706da808e6d93dc60b1910233a309009939f;p=linux-2.6-omap-h63xx.git e1000e: increase minimum frame size allowed Setting an MTU value below 68 was disabling the network connection and would not reconnect until the driver was reloaded. Prevent changing the MTU to anything below 68. Signed-off-by: Bruce Allan Signed-off-by: Jeff Kirsher Signed-off-by: Jeff Garzik --- diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c index 4573c7b9cbd..b8b26cf78de 100644 --- a/drivers/net/e1000e/netdev.c +++ b/drivers/net/e1000e/netdev.c @@ -3724,7 +3724,7 @@ static int e1000_change_mtu(struct net_device *netdev, int new_mtu) struct e1000_adapter *adapter = netdev_priv(netdev); int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; - if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || + if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) || (max_frame > MAX_JUMBO_FRAME_SIZE)) { e_err("Invalid MTU setting\n"); return -EINVAL;