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Commit 0bd9e6a9 authored by Sritej Velaga's avatar Sritej Velaga Committed by David S. Miller
Browse files

qlcnic: set mtu lower limit 



Setting mtu < 68 is not supported.

Signed-off-by: default avatarSritej Velaga <sritej.velaga@qlogic.com>
Signed-off-by: default avatarAmit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent aef3d898

drivers/net/qlcnic/qlcnic.h

+1 −0
Original line number Diff line number Diff line
@@ -95,6 +95,7 @@ 
#define FIRST_PAGE_GROUP_END	0x100000



#define P3_MAX_MTU                     (9600)

#define P3_MIN_MTU                     (68)

#define QLCNIC_MAX_ETHERHDR                32 /* This contains some padding */



#define QLCNIC_P3_RX_BUF_MAX_LEN         (QLCNIC_MAX_ETHERHDR + ETH_DATA_LEN)

drivers/net/qlcnic/qlcnic_hw.c

+3 −3
Original line number Diff line number Diff line
@@ -758,9 +758,9 @@ int qlcnic_change_mtu(struct net_device *netdev, int mtu) 
	struct qlcnic_adapter *adapter = netdev_priv(netdev);

	int rc = 0;



	if (mtu > P3_MAX_MTU) {

		dev_err(&adapter->netdev->dev, "mtu > %d bytes unsupported\n",

						P3_MAX_MTU);

	if (mtu < P3_MIN_MTU || mtu > P3_MAX_MTU) {

		dev_err(&adapter->netdev->dev, "%d bytes < mtu < %d bytes"

			" not supported\n", P3_MAX_MTU, P3_MIN_MTU);

		return -EINVAL;

	}