netdev - [PATCH -next] netxen: fail when try to setup unsupported features

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Message-ID: <20100628113329.3206bdbe@dhcp-lab-109.englab.brq.redhat.com>
Date:	Mon, 28 Jun 2010 11:33:29 +0200
From:	Stanislaw Gruszka <sgruszka@...hat.com>
To:	netdev@...r.kernel.org
Cc:	Amerigo Wang <amwang@...hat.com>,
	Amit Kumar Salecha <amit.salecha@...gic.com>
Subject: [PATCH -next] netxen: fail when try to setup unsupported features

Signed-off-by: Stanislaw Gruszka <sgruszka@...hat.com>
---
 drivers/net/netxen/netxen_nic_ethtool.c |   13 ++++++++++---
 1 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/net/netxen/netxen_nic_ethtool.c b/drivers/net/netxen/netxen_nic_ethtool.c
index 20f7c58..6d94ee5 100644
--- a/drivers/net/netxen/netxen_nic_ethtool.c
+++ b/drivers/net/netxen/netxen_nic_ethtool.c
@@ -887,12 +887,19 @@ static int netxen_nic_set_flags(struct net_device *netdev, u32 data)
 	struct netxen_adapter *adapter = netdev_priv(netdev);
 	int hw_lro;
 
+	if (data & ~ETH_FLAG_LRO)
+		return -EOPNOTSUPP;
+
 	if (!(adapter->capabilities & NX_FW_CAPABILITY_HW_LRO))
 		return -EINVAL;
 
-	ethtool_op_set_flags(netdev, data);
-
-	hw_lro = (data & ETH_FLAG_LRO) ? NETXEN_NIC_LRO_ENABLED : 0;
+	if (data & ETH_FLAG_LRO) {
+		hw_lro = NETXEN_NIC_LRO_ENABLED;
+		netdev->features |= NETIF_F_LRO;
+	} else {
+		hw_lro = 0;
+		netdev->features &= ~NETIF_F_LRO;
+	}
 
 	if (netxen_config_hw_lro(adapter, hw_lro))
 		return -EIO;
-- 
1.5.5.6

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