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authorHuang, Xiong <xiong@qca.qualcomm.com>2012-04-18 22:01:23 +0000
committerDavid S. Miller <davem@davemloft.net>2012-04-19 20:14:19 -0400
commitc08b9b2a5b3f0fd83e7f72da03f0a0df12c67e3a (patch)
tree0de7ea9631c906f282ebfb93fcd216701315f2f7 /drivers
parent969a7ee2a8398fb705f9836dc11d9e307d3ac89c (diff)
downloadlinux-c08b9b2a5b3f0fd83e7f72da03f0a0df12c67e3a.tar.bz2
atl1c: update right threshold for TSO
atl1c_configure_tx used a wrong value of MAX_TX_OFFLOAD_THRESH(9KB) for TSO threshold. the right value should be 7KB Fast Ethernet controller doesn't support Jumbo frame. Signed-off-by: xiong <xiong@qca.qualcomm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/atheros/atl1c/atl1c.h2
-rw-r--r--drivers/net/ethernet/atheros/atl1c/atl1c_hw.h1
-rw-r--r--drivers/net/ethernet/atheros/atl1c/atl1c_main.c11
3 files changed, 9 insertions, 5 deletions
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c.h b/drivers/net/ethernet/atheros/atl1c/atl1c.h
index 0a4bfab7a19a..fa315519c071 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c.h
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c.h
@@ -74,8 +74,6 @@
#define AT_RX_BUF_SIZE (ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)
#define MAX_JUMBO_FRAME_SIZE (6*1024)
-#define MAX_TSO_FRAME_SIZE (7*1024)
-#define MAX_TX_OFFLOAD_THRESH (9*1024)
#define AT_MAX_RECEIVE_QUEUE 4
#define AT_DEF_RECEIVE_QUEUE 1
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
index c1aa3ba7545b..c9c678213107 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
@@ -500,6 +500,7 @@ int atl1c_phy_power_saving(struct atl1c_hw *hw);
/* Jumbo packet Threshold for task offload */
#define REG_TX_TSO_OFFLOAD_THRESH 0x1594 /* In 8-bytes */
#define TX_TSO_OFFLOAD_THRESH_MASK 0x07FF
+#define MAX_TSO_FRAME_SIZE (7*1024)
#define REG_TXF_WATER_MARK 0x1598 /* In 8-bytes */
#define TXF_WATER_MARK_MASK 0x0FFF
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
index d2f89f026d70..e8e9c104cfeb 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -501,11 +501,16 @@ static int atl1c_set_features(struct net_device *netdev,
static int atl1c_change_mtu(struct net_device *netdev, int new_mtu)
{
struct atl1c_adapter *adapter = netdev_priv(netdev);
+ struct atl1c_hw *hw = &adapter->hw;
int old_mtu = netdev->mtu;
int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
- if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) ||
- (max_frame > MAX_JUMBO_FRAME_SIZE)) {
+ /* Fast Ethernet controller doesn't support jumbo packet */
+ if (((hw->nic_type == athr_l2c ||
+ hw->nic_type == athr_l2c_b ||
+ hw->nic_type == athr_l2c_b2) && new_mtu > ETH_DATA_LEN) ||
+ max_frame < ETH_ZLEN + ETH_FCS_LEN ||
+ max_frame > MAX_JUMBO_FRAME_SIZE) {
if (netif_msg_link(adapter))
dev_warn(&adapter->pdev->dev, "invalid MTU setting\n");
return -EINVAL;
@@ -1049,7 +1054,7 @@ static void atl1c_configure_tx(struct atl1c_adapter *adapter)
u16 tx_offload_thresh;
u32 txq_ctrl_data;
- tx_offload_thresh = MAX_TX_OFFLOAD_THRESH;
+ tx_offload_thresh = MAX_TSO_FRAME_SIZE;
AT_WRITE_REG(hw, REG_TX_TSO_OFFLOAD_THRESH,
(tx_offload_thresh >> 3) & TX_TSO_OFFLOAD_THRESH_MASK);
max_pay_load = pcie_get_readrq(adapter->pdev) >> 8;