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qlcnic: set mtu lower limit

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Setting mtu < 68 is not supported.

Signed-off-by: Sritej Velaga <sritej.velaga@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sritej Velaga 2010-10-04 04:20:16 +00:00 committed by David S. Miller
parent aef3d89827
commit 0bd9e6a964
2 changed files with 4 additions and 3 deletions
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1
drivers/net/qlcnic/qlcnic.h
View File

@ -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)

6
drivers/net/qlcnic/qlcnic_hw.c
View File

@ -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;
}