diff options
| author | Brice Goglin <brice@myri.com> | 2007-08-09 09:02:14 +0200 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-08-14 07:27:10 +0200 |
| commit | 626fda948839fc2f488f527076b8f42b1b7a4687 (patch) | |
| tree | 91d5e1d9a70fa00feeba010c7a48e65aeed1cd71 /drivers/net/myri10ge | |
| parent | via-rhine: disable rx_copybreak on archs that don't allow unaligned DMA access (diff) | |
| download | linux-626fda948839fc2f488f527076b8f42b1b7a4687.tar.xz linux-626fda948839fc2f488f527076b8f42b1b7a4687.zip | |
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.c | 25 |
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 { 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) |