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authorBrice Goglin <brice@myri.com>2007-08-09 03:02:14 -0400
committerJeff Garzik <jeff@garzik.org>2007-08-14 01:27:10 -0400
commit626fda948839fc2f488f527076b8f42b1b7a4687 (patch)
tree91d5e1d9a70fa00feeba010c7a48e65aeed1cd71 /drivers/net/myri10ge/myri10ge.c
parentb47157f00414f368f2847697ce48b76f1a5e5110 (diff)
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/myri10ge.c')
-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 deca65330b0f..ae9bb7b7fd67 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -191,6 +191,7 @@ struct myri10ge_priv {
191 struct timer_list watchdog_timer; 191 struct timer_list watchdog_timer;
192 int watchdog_tx_done; 192 int watchdog_tx_done;
193 int watchdog_tx_req; 193 int watchdog_tx_req;
194 int watchdog_pause;
194 int watchdog_resets; 195 int watchdog_resets;
195 int tx_linearized; 196 int tx_linearized;
196 int pause; 197 int pause;
@@ -2800,6 +2801,7 @@ static void myri10ge_watchdog(struct work_struct *work)
2800static void myri10ge_watchdog_timer(unsigned long arg) 2801static void myri10ge_watchdog_timer(unsigned long arg)
2801{ 2802{
2802 struct myri10ge_priv *mgp; 2803 struct myri10ge_priv *mgp;
2804 u32 rx_pause_cnt;
2803 2805
2804 mgp = (struct myri10ge_priv *)arg; 2806 mgp = (struct myri10ge_priv *)arg;
2805 2807
@@ -2816,19 +2818,28 @@ static void myri10ge_watchdog_timer(unsigned long arg)
2816 myri10ge_fill_thresh) 2818 myri10ge_fill_thresh)
2817 mgp->rx_big.watchdog_needed = 0; 2819 mgp->rx_big.watchdog_needed = 0;
2818 } 2820 }
2821 rx_pause_cnt = ntohl(mgp->fw_stats->dropped_pause);
2819 2822
2820 if (mgp->tx.req != mgp->tx.done && 2823 if (mgp->tx.req != mgp->tx.done &&
2821 mgp->tx.done == mgp->watchdog_tx_done && 2824 mgp->tx.done == mgp->watchdog_tx_done &&
2822 mgp->watchdog_tx_req != mgp->watchdog_tx_done) 2825 mgp->watchdog_tx_req != mgp->watchdog_tx_done) {
2823 /* nic seems like it might be stuck.. */ 2826 /* nic seems like it might be stuck.. */
2824 schedule_work(&mgp->watchdog_work); 2827 if (rx_pause_cnt != mgp->watchdog_pause) {
2825 else 2828 if (net_ratelimit())
2826 /* rearm timer */ 2829 printk(KERN_WARNING "myri10ge %s:"
2827 mod_timer(&mgp->watchdog_timer, 2830 "TX paused, check link partner\n",
2828 jiffies + myri10ge_watchdog_timeout * HZ); 2831 mgp->dev->name);
2829 2832 } else {
2833 schedule_work(&mgp->watchdog_work);
2834 return;
2835 }
2836 }
2837 /* rearm timer */
2838 mod_timer(&mgp->watchdog_timer,
2839 jiffies + myri10ge_watchdog_timeout * HZ);
2830 mgp->watchdog_tx_done = mgp->tx.done; 2840 mgp->watchdog_tx_done = mgp->tx.done;
2831 mgp->watchdog_tx_req = mgp->tx.req; 2841 mgp->watchdog_tx_req = mgp->tx.req;
2842 mgp->watchdog_pause = rx_pause_cnt;
2832} 2843}
2833 2844
2834static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 2845static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent)