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ixgb: add tx timeout counter
This adds a TX timeout counter to the ethtool stats, a tx timeout debug message, and sets the timer to 5 seconds. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com>
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@ -180,6 +180,7 @@ struct ixgb_adapter {
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uint64_t hw_csum_tx_good;
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uint64_t hw_csum_tx_error;
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uint32_t tx_int_delay;
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uint32_t tx_timeout_count;
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boolean_t tx_int_delay_enable;
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boolean_t detect_tx_hung;
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@ -78,6 +78,7 @@ static struct ixgb_stats ixgb_gstrings_stats[] = {
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{"tx_heartbeat_errors", IXGB_STAT(net_stats.tx_heartbeat_errors)},
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{"tx_window_errors", IXGB_STAT(net_stats.tx_window_errors)},
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{"tx_deferred_ok", IXGB_STAT(stats.dc)},
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{"tx_timeout_count", IXGB_STAT(tx_timeout_count) },
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{"rx_long_length_errors", IXGB_STAT(stats.roc)},
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{"rx_short_length_errors", IXGB_STAT(stats.ruc)},
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#ifdef NETIF_F_TSO
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@ -428,7 +428,7 @@ ixgb_probe(struct pci_dev *pdev,
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netdev->change_mtu = &ixgb_change_mtu;
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ixgb_set_ethtool_ops(netdev);
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netdev->tx_timeout = &ixgb_tx_timeout;
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netdev->watchdog_timeo = HZ;
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netdev->watchdog_timeo = 5 * HZ;
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#ifdef CONFIG_IXGB_NAPI
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netdev->poll = &ixgb_clean;
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netdev->weight = 64;
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@ -1509,6 +1509,7 @@ ixgb_tx_timeout_task(struct net_device *netdev)
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{
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struct ixgb_adapter *adapter = netdev_priv(netdev);
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adapter->tx_timeout_count++;
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ixgb_down(adapter, TRUE);
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ixgb_up(adapter);
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}
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@ -1838,11 +1839,31 @@ ixgb_clean_tx_irq(struct ixgb_adapter *adapter)
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/* detect a transmit hang in hardware, this serializes the
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* check with the clearing of time_stamp and movement of i */
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adapter->detect_tx_hung = FALSE;
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if(tx_ring->buffer_info[i].dma &&
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time_after(jiffies, tx_ring->buffer_info[i].time_stamp + HZ)
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if (tx_ring->buffer_info[eop].dma &&
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time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + HZ)
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&& !(IXGB_READ_REG(&adapter->hw, STATUS) &
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IXGB_STATUS_TXOFF))
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IXGB_STATUS_TXOFF)) {
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/* detected Tx unit hang */
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DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n"
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" TDH <%x>\n"
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" TDT <%x>\n"
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" next_to_use <%x>\n"
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" next_to_clean <%x>\n"
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"buffer_info[next_to_clean]\n"
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" time_stamp <%lx>\n"
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" next_to_watch <%x>\n"
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" jiffies <%lx>\n"
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" next_to_watch.status <%x>\n",
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IXGB_READ_REG(&adapter->hw, TDH),
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IXGB_READ_REG(&adapter->hw, TDT),
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tx_ring->next_to_use,
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tx_ring->next_to_clean,
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tx_ring->buffer_info[eop].time_stamp,
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eop,
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jiffies,
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eop_desc->status);
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netif_stop_queue(netdev);
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}
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}
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return cleaned;
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