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e1000/e1000e/igb/ixgb: do not use netif_wake_queue un-necessarily

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It was pointed out that the Intel wired ethernet drivers do not need to
wake the tx queue since netif_carrier_on/off will take care of the qdisc
management in order to guarantee the correct handling of the transmit
routine enable state.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jesse Brandeburg 2009-04-21 18:42:05 +00:00 committed by David S. Miller
parent bf98a82633
commit 4cb9be7ab4
4 changed files with 10 additions and 11 deletions
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4
drivers/net/e1000/e1000_main.c
View file

@ -498,6 +498,8 @@ int e1000_up(struct e1000_adapter *adapter)
e1000_irq_enable(adapter);
netif_wake_queue(adapter->netdev);
/* fire a link change interrupt to start the watchdog */
ew32(ICS, E1000_ICS_LSC);
return 0;
@ -2591,7 +2593,6 @@ static void e1000_watchdog(unsigned long data)
ew32(TCTL, tctl);
netif_carrier_on(netdev);
netif_wake_queue(netdev);
mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ));
adapter->smartspeed = 0;
} else {
@ -2608,7 +2609,6 @@ static void e1000_watchdog(unsigned long data)
printk(KERN_INFO "e1000: %s NIC Link is Down\n",
netdev->name);
netif_carrier_off(netdev);
netif_stop_queue(netdev);
mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ));
/* 80003ES2LAN workaround--

8
drivers/net/e1000e/netdev.c
View file

@ -2826,6 +2826,8 @@ int e1000e_up(struct e1000_adapter *adapter)
e1000_configure_msix(adapter);
e1000_irq_enable(adapter);
netif_wake_queue(adapter->netdev);
/* fire a link change interrupt to start the watchdog */
ew32(ICS, E1000_ICS_LSC);
return 0;
@ -2848,7 +2850,7 @@ void e1000e_down(struct e1000_adapter *adapter)
ew32(RCTL, rctl & ~E1000_RCTL_EN);
/* flush and sleep below */
netif_tx_stop_all_queues(netdev);
netif_stop_queue(netdev);
/* disable transmits in the hardware */
tctl = er32(TCTL);
@ -3130,7 +3132,7 @@ static int e1000_open(struct net_device *netdev)
e1000_irq_enable(adapter);
netif_tx_start_all_queues(netdev);
netif_start_queue(netdev);
/* fire a link status change interrupt to start the watchdog */
ew32(ICS, E1000_ICS_LSC);
@ -3600,7 +3602,6 @@ static void e1000_watchdog_task(struct work_struct *work)
phy->ops.cfg_on_link_up(hw);
netif_carrier_on(netdev);
netif_tx_wake_all_queues(netdev);
if (!test_bit(__E1000_DOWN, &adapter->state))
mod_timer(&adapter->phy_info_timer,
@ -3614,7 +3615,6 @@ static void e1000_watchdog_task(struct work_struct *work)
printk(KERN_INFO "e1000e: %s NIC Link is Down\n",
adapter->netdev->name);
netif_carrier_off(netdev);
netif_tx_stop_all_queues(netdev);
if (!test_bit(__E1000_DOWN, &adapter->state))
mod_timer(&adapter->phy_info_timer,
round_jiffies(jiffies + 2 * HZ));

4
drivers/net/igb/igb_main.c
View file

@ -942,6 +942,8 @@ int igb_up(struct igb_adapter *adapter)
rd32(E1000_ICR);
igb_irq_enable(adapter);
netif_tx_start_all_queues(adapter->netdev);
/* Fire a link change interrupt to start the watchdog. */
wr32(E1000_ICS, E1000_ICS_LSC);
return 0;
@ -2664,7 +2666,6 @@ static void igb_watchdog_task(struct work_struct *work)
}
netif_carrier_on(netdev);
netif_tx_wake_all_queues(netdev);
igb_ping_all_vfs(adapter);
@ -2681,7 +2682,6 @@ static void igb_watchdog_task(struct work_struct *work)
printk(KERN_INFO "igb: %s NIC Link is Down\n",
netdev->name);
netif_carrier_off(netdev);
netif_tx_stop_all_queues(netdev);
igb_ping_all_vfs(adapter);

5
drivers/net/ixgb/ixgb_main.c
View file

@ -266,6 +266,8 @@ ixgb_up(struct ixgb_adapter *adapter)
napi_enable(&adapter->napi);
ixgb_irq_enable(adapter);
netif_wake_queue(netdev);
mod_timer(&adapter->watchdog_timer, jiffies);
return 0;
@ -1118,7 +1120,6 @@ ixgb_watchdog(unsigned long data)
adapter->link_speed = 10000;
adapter->link_duplex = FULL_DUPLEX;
netif_carrier_on(netdev);
netif_wake_queue(netdev);
}
} else {
if (netif_carrier_ok(netdev)) {
@ -1127,8 +1128,6 @@ ixgb_watchdog(unsigned long data)
printk(KERN_INFO "ixgb: %s NIC Link is Down\n",
netdev->name);
netif_carrier_off(netdev);
netif_stop_queue(netdev);
}
}