redonkable/alistair23-linux
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[PATCH] e1000: Fix TX queue length based on link speed

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10/100 speeds seem to have some problems reporting false tx timeouts especially at half duplex.  Fixed by using a timeout factor to attempt to mitigate the false timeouts.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Jeff Kirsher 2006-01-12 16:50:53 -08:00 committed by Jeff Garzik
parent f11b7f8535
commit 66a2b0a30f
2 changed files with 16 additions and 0 deletions
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1
drivers/net/e1000/e1000.h
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@ -296,6 +296,7 @@ struct e1000_adapter {
uint32_t tx_fifo_head;
uint32_t tx_head_addr;
uint32_t tx_fifo_size;
uint8_t tx_timeout_factor;
atomic_t tx_fifo_stall;
boolean_t pcix_82544;
boolean_t detect_tx_hung;

15
drivers/net/e1000/e1000_main.c
View file

@ -2319,6 +2319,21 @@ e1000_watchdog_task(struct e1000_adapter *adapter)
adapter->link_duplex == FULL_DUPLEX ?
"Full Duplex" : "Half Duplex");
/* tweak tx_queue_len according to speed/duplex */
netdev->tx_queue_len = adapter->tx_queue_len;
adapter->tx_timeout_factor = 1;
if (adapter->link_duplex == HALF_DUPLEX) {
switch (adapter->link_speed) {
case SPEED_10:
netdev->tx_queue_len = 10;
adapter->tx_timeout_factor = 8;
break;
case SPEED_100:
netdev->tx_queue_len = 100;
break;
}
}
netif_carrier_on(netdev);
netif_wake_queue(netdev);
mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);