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e1000: add queue restart counter 

Add a netif_wake/start_queue counter to the ethtool statistics to indicated
to the user that their transmit ring could be too small for their workload.

Signed-off-by: Jesse brandeburg <jesse.brandeburg@intel.com>
Cc: Jamal Hadi <hadi@cyberus.ca>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
This commit is contained in:
Jesse Brandeburg 2006-11-01 08:47:59 -08:00 committed by Jeff Garzik
parent fc2307d00c
commit fcfb122425
3 changed files with 6 additions and 1 deletions
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1
drivers/net/e1000/e1000.h
View File

@ -265,6 +265,7 @@ struct e1000_adapter {
/* TX */
struct e1000_tx_ring *tx_ring; /* One per active queue */
unsigned int restart_queue;
unsigned long tx_queue_len;
uint32_t txd_cmd;
uint32_t tx_int_delay;

1
drivers/net/e1000/e1000_ethtool.c
View File

@ -85,6 +85,7 @@ static const struct e1000_stats e1000_gstrings_stats[] = {
{ "tx_single_coll_ok", E1000_STAT(stats.scc) },
{ "tx_multi_coll_ok", E1000_STAT(stats.mcc) },
{ "tx_timeout_count", E1000_STAT(tx_timeout_count) },
{ "tx_restart_queue", E1000_STAT(restart_queue) },
{ "rx_long_length_errors", E1000_STAT(stats.roc) },
{ "rx_short_length_errors", E1000_STAT(stats.ruc) },
{ "rx_align_errors", E1000_STAT(stats.algnerrc) },

5
drivers/net/e1000/e1000_main.c
View File

@ -2974,6 +2974,7 @@ static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
/* A reprieve! */
netif_start_queue(netdev);
++adapter->restart_queue;
return 0;
}
@ -3654,8 +3655,10 @@ e1000_clean_tx_irq(struct e1000_adapter *adapter,
* sees the new next_to_clean.
*/
smp_mb();
if (netif_queue_stopped(netdev))
if (netif_queue_stopped(netdev)) {
netif_wake_queue(netdev);
++adapter->restart_queue;
}
}
if (adapter->detect_tx_hung) {