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authorSritej Velaga <sritej.velaga@qlogic.com>2010-10-04 04:20:16 +0000
committerDavid S. Miller <davem@davemloft.net>2010-10-04 22:46:52 -0700
commit0bd9e6a964d86a19f54a9ba31168a37d64e451d1 (patch)
tree7c2c35cb539201e59a5f955a39d21af6b195a44e /drivers/net/qlcnic
parentaef3d898276e046bfa877cd20b8ee269b85161cd (diff)
qlcnic: set mtu lower limit
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>
Diffstat (limited to 'drivers/net/qlcnic')
-rw-r--r--drivers/net/qlcnic/qlcnic.h1
-rw-r--r--drivers/net/qlcnic/qlcnic_hw.c6
2 files changed, 4 insertions, 3 deletions
diff --git a/drivers/net/qlcnic/qlcnic.h b/drivers/net/qlcnic/qlcnic.h
index 9d80171a1fb..42a288348ac 100644
--- a/drivers/net/qlcnic/qlcnic.h
+++ b/drivers/net/qlcnic/qlcnic.h
@@ -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)
diff --git a/drivers/net/qlcnic/qlcnic_hw.c b/drivers/net/qlcnic/qlcnic_hw.c
index 712cfabc282..9d3e16dbd04 100644
--- a/drivers/net/qlcnic/qlcnic_hw.c
+++ b/drivers/net/qlcnic/qlcnic_hw.c
@@ -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;
}