netdev - [PATCH 8/9 net-next-2.6] qlcnic: Fix LRO disable

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Date:	Thu, 31 Mar 2011 21:41:05 -0700
From:	Anirban Chakraborty <anirban.chakraborty@...gic.com>
To:	David Miller <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:	Dept_NX_Linux_NIC_Driver <Dept_NX_Linux_NIC_Driver@...gic.com>
Subject: [PATCH 8/9 net-next-2.6] qlcnic: Fix LRO disable

From: Rajesh Borundia <rajesh.borundia@...gic.com>

o In dev->open LRO was enabled by default, enable it depending
  upon netdev->features , kernel may have disabled it.
o Configure LRO when interface is up.

Signed-off-by: Rajesh Borundia <rajesh.borundia@...gic.com>
Signed-off-by: Anirban Chakraborty <anirban.chakraborty@...gic.com>
---
 drivers/net/qlcnic/qlcnic_ethtool.c |   26 ++++++++++++++++----------
 drivers/net/qlcnic/qlcnic_hw.c      |    6 ++++++
 drivers/net/qlcnic/qlcnic_main.c    |    3 ++-
 3 files changed, 24 insertions(+), 11 deletions(-)

diff --git a/drivers/net/qlcnic/qlcnic_ethtool.c b/drivers/net/qlcnic/qlcnic_ethtool.c
index e03108a..2656ec9 100644
--- a/drivers/net/qlcnic/qlcnic_ethtool.c
+++ b/drivers/net/qlcnic/qlcnic_ethtool.c
@@ -998,22 +998,28 @@ static int qlcnic_set_flags(struct net_device *netdev, u32 data)
        if (data & ~ETH_FLAG_LRO)
                return -EINVAL;

-       if (!(adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO))
-               return -EINVAL;
+       if (data & ETH_FLAG_LRO) {

-       if (!adapter->rx_csum) {
-               dev_info(&adapter->pdev->dev, "rx csum is off, "
-                       "cannot toggle lro\n");
-               return -EINVAL;
-       }
+               if (netdev->features & NETIF_F_LRO)
+                       return 0;

-       if ((data & ETH_FLAG_LRO) && (netdev->features & NETIF_F_LRO))
-               return 0;
+               if (!(adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO))
+                       return -EINVAL;
+
+               if (!adapter->rx_csum) {
+                       dev_info(&adapter->pdev->dev, "rx csum is off, "
+                               "cannot toggle lro\n");
+                       return -EINVAL;
+               }

-       if (data & ETH_FLAG_LRO) {
                hw_lro = QLCNIC_LRO_ENABLED;
                netdev->features |= NETIF_F_LRO;
+
        } else {
+
+               if (!(netdev->features & NETIF_F_LRO))
+                       return 0;
+
                hw_lro = 0;
                netdev->features &= ~NETIF_F_LRO;
        }
diff --git a/drivers/net/qlcnic/qlcnic_hw.c b/drivers/net/qlcnic/qlcnic_hw.c
index 3901be8..498cca9 100644
--- a/drivers/net/qlcnic/qlcnic_hw.c
+++ b/drivers/net/qlcnic/qlcnic_hw.c
@@ -566,6 +566,9 @@ int qlcnic_config_hw_lro(struct qlcnic_adapter *adapter, int enable)
        u64 word;
        int rv;

+       if (!test_bit(__QLCNIC_FW_ATTACHED, &adapter->state))
+               return 0;
+
        memset(&req, 0, sizeof(struct qlcnic_nic_req));

        req.qhdr = cpu_to_le64(QLCNIC_HOST_REQUEST << 23);
@@ -711,6 +714,9 @@ int qlcnic_send_lro_cleanup(struct qlcnic_adapter *adapter)
        u64 word;
        int rv;

+       if (!test_bit(__QLCNIC_FW_ATTACHED, &adapter->state))
+               return 0;
+
        memset(&req, 0, sizeof(struct qlcnic_nic_req));
        req.qhdr = cpu_to_le64(QLCNIC_HOST_REQUEST << 23);

diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c
index 8bf9a96..7f9edb2 100644
--- a/drivers/net/qlcnic/qlcnic_main.c
+++ b/drivers/net/qlcnic/qlcnic_main.c
@@ -773,7 +773,8 @@ qlcnic_set_netdev_features(struct qlcnic_adapter *adapter,
                features |= (NETIF_F_TSO | NETIF_F_TSO6);
                vlan_features |= (NETIF_F_TSO | NETIF_F_TSO6);
        }
-       if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
+
+       if (netdev->features & NETIF_F_LRO)
                features |= NETIF_F_LRO;

        if (esw_cfg->offload_flags & BIT_0) {
--
1.7.4.1


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