* [PATCHv2 NEXT 1/2] netxen: enable LRO based on NETIF_F_LRO
2011-01-03 7:58 [PATCHv2 0/2]netxen: updates Amit Kumar Salecha
@ 2011-01-03 7:58 ` Amit Kumar Salecha
2011-01-03 7:58 ` [PATCHv2 NEXT 2/2] netxen: update driver version 4.0.75 Amit Kumar Salecha
2011-01-03 19:57 ` [PATCHv2 0/2]netxen: updates David Miller
2 siblings, 0 replies; 4+ messages in thread
From: Amit Kumar Salecha @ 2011-01-03 7:58 UTC (permalink / raw)
To: davem; +Cc: netdev, ameen.rahman, anirban.chakraborty, Sucheta Chakraborty
From: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
o Enable/disable LRO in device based on NETIF_F_LRO flag, instead of using
driver private flag.
o Disable LRO, if rx csum offloading is off.
David Miller,
You should use netdev_info() instead of dev_info().
Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
---
drivers/net/netxen/netxen_nic.h | 1 +
drivers/net/netxen/netxen_nic_ethtool.c | 26 ++++++++++++++++++++++++--
drivers/net/netxen/netxen_nic_hw.c | 5 -----
drivers/net/netxen/netxen_nic_main.c | 4 +---
4 files changed, 26 insertions(+), 10 deletions(-)
diff --git a/drivers/net/netxen/netxen_nic.h b/drivers/net/netxen/netxen_nic.h
index 8e8a978..4e54587 100644
--- a/drivers/net/netxen/netxen_nic.h
+++ b/drivers/net/netxen/netxen_nic.h
@@ -1132,6 +1132,7 @@ typedef struct {
#define NETXEN_NIC_MSI_ENABLED 0x02
#define NETXEN_NIC_MSIX_ENABLED 0x04
#define NETXEN_NIC_LRO_ENABLED 0x08
+#define NETXEN_NIC_LRO_DISABLED 0x00
#define NETXEN_NIC_BRIDGE_ENABLED 0X10
#define NETXEN_NIC_DIAG_ENABLED 0x20
#define NETXEN_IS_MSI_FAMILY(adapter) \
diff --git a/drivers/net/netxen/netxen_nic_ethtool.c b/drivers/net/netxen/netxen_nic_ethtool.c
index b30de24..587498e 100644
--- a/drivers/net/netxen/netxen_nic_ethtool.c
+++ b/drivers/net/netxen/netxen_nic_ethtool.c
@@ -720,7 +720,21 @@ static u32 netxen_nic_get_rx_csum(struct net_device *dev)
static int netxen_nic_set_rx_csum(struct net_device *dev, u32 data)
{
struct netxen_adapter *adapter = netdev_priv(dev);
- adapter->rx_csum = !!data;
+
+ if (data) {
+ adapter->rx_csum = data;
+ return 0;
+ }
+
+ if (dev->features & NETIF_F_LRO) {
+ if (netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_DISABLED))
+ return -EIO;
+
+ dev->features &= ~NETIF_F_LRO;
+ netxen_send_lro_cleanup(adapter);
+ netdev_info(dev, "disabling LRO as rx_csum is off\n");
+ }
+ adapter->rx_csum = data;
return 0;
}
@@ -893,11 +907,19 @@ static int netxen_nic_set_flags(struct net_device *netdev, u32 data)
if (!(adapter->capabilities & NX_FW_CAPABILITY_HW_LRO))
return -EINVAL;
+ if (!adapter->rx_csum) {
+ netdev_info(netdev, "rx csum is off, cannot toggle LRO\n");
+ return -EINVAL;
+ }
+
+ if (!!(data & ETH_FLAG_LRO) == !!(netdev->features & NETIF_F_LRO))
+ return 0;
+
if (data & ETH_FLAG_LRO) {
hw_lro = NETXEN_NIC_LRO_ENABLED;
netdev->features |= NETIF_F_LRO;
} else {
- hw_lro = 0;
+ hw_lro = NETXEN_NIC_LRO_DISABLED;
netdev->features &= ~NETIF_F_LRO;
}
diff --git a/drivers/net/netxen/netxen_nic_hw.c b/drivers/net/netxen/netxen_nic_hw.c
index e42d26e..5cef718 100644
--- a/drivers/net/netxen/netxen_nic_hw.c
+++ b/drivers/net/netxen/netxen_nic_hw.c
@@ -809,9 +809,6 @@ int netxen_config_hw_lro(struct netxen_adapter *adapter, int enable)
u64 word;
int rv = 0;
- if ((adapter->flags & NETXEN_NIC_LRO_ENABLED) == enable)
- return 0;
-
memset(&req, 0, sizeof(nx_nic_req_t));
req.qhdr = cpu_to_le64(NX_HOST_REQUEST << 23);
@@ -827,8 +824,6 @@ int netxen_config_hw_lro(struct netxen_adapter *adapter, int enable)
"configure hw lro request\n");
}
- adapter->flags ^= NETXEN_NIC_LRO_ENABLED;
-
return rv;
}
diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c
index 58a3643..33fac32 100644
--- a/drivers/net/netxen/netxen_nic_main.c
+++ b/drivers/net/netxen/netxen_nic_main.c
@@ -762,8 +762,6 @@ netxen_check_options(struct netxen_adapter *adapter)
if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
- adapter->flags &= ~NETXEN_NIC_LRO_ENABLED;
-
if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
@@ -990,7 +988,7 @@ __netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
netxen_config_intr_coalesce(adapter);
- if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
+ if (netdev->features & NETIF_F_LRO)
netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
netxen_napi_enable(adapter);
--
1.7.3.2
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