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authorEmil Tantilov <emil.s.tantilov@intel.com>2010-03-26 11:25:58 +0000
committerDavid S. Miller <davem@davemloft.net>2010-03-27 08:33:22 -0700
commit39ca5f033bb2ea18877632809185268eebbb37a9 (patch)
tree2cde0a3364df707c4738437743c91ce02e2d0742
parent7438189baa0a2fe30084bdc97e3d540ebc5444f3 (diff)
e1000: do not modify tx_queue_len on link speed change
Previously the driver tweaked txqueuelen to avoid false Tx hang reports seen at half duplex. This had the effect of overriding user set values on link change/reset. Testing shows that adjusting only the timeout factor is sufficient to prevent Tx hang reports at half duplex. This patch removes all instances of tx_queue_len in the driver. Based on e1000e patch by Franco Fichtner <franco@lastsummer.de> CC: Franco Fichtner <franco@lastsummer.de> Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> Acked-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>
-rw-r--r--drivers/net/e1000/e1000.h1
-rw-r--r--drivers/net/e1000/e1000_main.c9
2 files changed, 1 insertions, 9 deletions
diff --git a/drivers/net/e1000/e1000.h b/drivers/net/e1000/e1000.h
index 9902b33b7160..2f29c2131851 100644
--- a/drivers/net/e1000/e1000.h
+++ b/drivers/net/e1000/e1000.h
@@ -261,7 +261,6 @@ struct e1000_adapter {
/* TX */
struct e1000_tx_ring *tx_ring; /* One per active queue */
unsigned int restart_queue;
- unsigned long tx_queue_len;
u32 txd_cmd;
u32 tx_int_delay;
u32 tx_abs_int_delay;
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 8be6faee43e6..b15ece26ed84 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -383,8 +383,6 @@ static void e1000_configure(struct e1000_adapter *adapter)
adapter->alloc_rx_buf(adapter, ring,
E1000_DESC_UNUSED(ring));
}
-
- adapter->tx_queue_len = netdev->tx_queue_len;
}
int e1000_up(struct e1000_adapter *adapter)
@@ -503,7 +501,6 @@ void e1000_down(struct e1000_adapter *adapter)
del_timer_sync(&adapter->watchdog_timer);
del_timer_sync(&adapter->phy_info_timer);
- netdev->tx_queue_len = adapter->tx_queue_len;
adapter->link_speed = 0;
adapter->link_duplex = 0;
netif_carrier_off(netdev);
@@ -2316,19 +2313,15 @@ static void e1000_watchdog(unsigned long data)
E1000_CTRL_RFCE) ? "RX" : ((ctrl &
E1000_CTRL_TFCE) ? "TX" : "None" )));
- /* tweak tx_queue_len according to speed/duplex
- * and adjust the timeout factor */
- netdev->tx_queue_len = adapter->tx_queue_len;
+ /* adjust timeout factor according to speed/duplex */
adapter->tx_timeout_factor = 1;
switch (adapter->link_speed) {
case SPEED_10:
txb2b = false;
- netdev->tx_queue_len = 10;
adapter->tx_timeout_factor = 16;
break;
case SPEED_100:
txb2b = false;
- netdev->tx_queue_len = 100;
/* maybe add some timeout factor ? */
break;
}