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authorBrice Goglin <brice@myri.com>2007-08-09 09:02:14 +0200
committerJeff Garzik <jeff@garzik.org>2007-08-14 01:27:10 -0400
commit626fda948839fc2f488f527076b8f42b1b7a4687 (patch)
tree91d5e1d9a70fa00feeba010c7a48e65aeed1cd71 /drivers/net/myri10ge
parentb47157f00414f368f2847697ce48b76f1a5e5110 (diff)
downloadop-kernel-dev-626fda948839fc2f488f527076b8f42b1b7a4687.zip
op-kernel-dev-626fda948839fc2f488f527076b8f42b1b7a4687.tar.gz
myri10ge: Use the pause counter to avoid a needless device reset
Use the pause counter to avoid a needless device reset, and print a message telling the admin that our link partner is flow controlling us down to 0 pkts/sec. Signed-off-by: Brice Goglin <brice@myri.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/myri10ge')
-rw-r--r--drivers/net/myri10ge/myri10ge.c25
1 files changed, 18 insertions, 7 deletions
diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index deca653..ae9bb7b 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -191,6 +191,7 @@ struct myri10ge_priv {
struct timer_list watchdog_timer;
int watchdog_tx_done;
int watchdog_tx_req;
+ int watchdog_pause;
int watchdog_resets;
int tx_linearized;
int pause;
@@ -2800,6 +2801,7 @@ static void myri10ge_watchdog(struct work_struct *work)
static void myri10ge_watchdog_timer(unsigned long arg)
{
struct myri10ge_priv *mgp;
+ u32 rx_pause_cnt;
mgp = (struct myri10ge_priv *)arg;
@@ -2816,19 +2818,28 @@ static void myri10ge_watchdog_timer(unsigned long arg)
myri10ge_fill_thresh)
mgp->rx_big.watchdog_needed = 0;
}
+ rx_pause_cnt = ntohl(mgp->fw_stats->dropped_pause);
if (mgp->tx.req != mgp->tx.done &&
mgp->tx.done == mgp->watchdog_tx_done &&
- mgp->watchdog_tx_req != mgp->watchdog_tx_done)
+ mgp->watchdog_tx_req != mgp->watchdog_tx_done) {
/* nic seems like it might be stuck.. */
- schedule_work(&mgp->watchdog_work);
- else
- /* rearm timer */
- mod_timer(&mgp->watchdog_timer,
- jiffies + myri10ge_watchdog_timeout * HZ);
-
+ if (rx_pause_cnt != mgp->watchdog_pause) {
+ if (net_ratelimit())
+ printk(KERN_WARNING "myri10ge %s:"
+ "TX paused, check link partner\n",
+ mgp->dev->name);
+ } else {
+ schedule_work(&mgp->watchdog_work);
+ return;
+ }
+ }
+ /* rearm timer */
+ mod_timer(&mgp->watchdog_timer,
+ jiffies + myri10ge_watchdog_timeout * HZ);
mgp->watchdog_tx_done = mgp->tx.done;
mgp->watchdog_tx_req = mgp->tx.req;
+ mgp->watchdog_pause = rx_pause_cnt;
}
static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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