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qlcnic: Enhance Tx timeout debugging.

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o Dump each Tx queue details with all descriptors, queue indices
  and Tx queue stats to imporve data colletion in situations
  where Tx timeout occurs.

Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Himanshu Madhani 2014-01-23 17:18:29 -05:00 committed by David S. Miller
parent 72ebe3495f
commit 95b3890ae3
2 changed files with 51 additions and 20 deletions
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2
drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
View file

@ -383,7 +383,7 @@ static int qlcnic_83xx_idc_tx_soft_reset(struct qlcnic_adapter *adapter)
qlcnic_up(adapter, netdev);
netif_device_attach(netdev);
clear_bit(__QLCNIC_RESETTING, &adapter->state);
dev_err(&adapter->pdev->dev, "%s:\n", __func__);
netdev_info(adapter->netdev, "%s: soft reset complete.\n", __func__);
return 0;
}

69
drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
View file

@ -2007,7 +2007,7 @@ qlcnic_reset_hw_context(struct qlcnic_adapter *adapter)
netif_device_attach(netdev);
clear_bit(__QLCNIC_RESETTING, &adapter->state);
dev_err(&adapter->pdev->dev, "%s:\n", __func__);
netdev_info(adapter->netdev, "%s: soft reset complete\n", __func__);
return 0;
}
@ -2747,11 +2747,57 @@ int qlcnic_check_temp(struct qlcnic_adapter *adapter)
return rv;
}
static inline void dump_tx_ring_desc(struct qlcnic_host_tx_ring *tx_ring)
{
int i;
struct cmd_desc_type0 *tx_desc_info;
for (i = 0; i < tx_ring->num_desc; i++) {
tx_desc_info = &tx_ring->desc_head[i];
pr_info("TX Desc: %d\n", i);
print_hex_dump(KERN_INFO, "TX: ", DUMP_PREFIX_OFFSET, 16, 1,
&tx_ring->desc_head[i],
sizeof(struct cmd_desc_type0), true);
}
}
static void qlcnic_dump_tx_rings(struct qlcnic_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
struct qlcnic_host_tx_ring *tx_ring;
int ring;
if (!netdev || !netif_running(netdev))
return;
for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
tx_ring = &adapter->tx_ring[ring];
netdev_info(netdev, "Tx ring=%d Context Id=0x%x\n",
ring, tx_ring->ctx_id);
netdev_info(netdev,
"xmit_finished=%llu, xmit_called=%llu, xmit_on=%llu, xmit_off=%llu\n",
tx_ring->tx_stats.xmit_finished,
tx_ring->tx_stats.xmit_called,
tx_ring->tx_stats.xmit_on,
tx_ring->tx_stats.xmit_off);
netdev_info(netdev,
"crb_intr_mask=%d, hw_producer=%d, sw_producer=%d sw_consumer=%d, hw_consumer=%d\n",
readl(tx_ring->crb_intr_mask),
readl(tx_ring->crb_cmd_producer),
tx_ring->producer, tx_ring->sw_consumer,
le32_to_cpu(*(tx_ring->hw_consumer)));
netdev_info(netdev, "Total desc=%d, Available desc=%d\n",
tx_ring->num_desc, qlcnic_tx_avail(tx_ring));
if (netif_msg_tx_done(adapter->ahw))
dump_tx_ring_desc(tx_ring);
}
}
static void qlcnic_tx_timeout(struct net_device *netdev)
{
struct qlcnic_adapter *adapter = netdev_priv(netdev);
struct qlcnic_host_tx_ring *tx_ring;
int ring;
if (test_bit(__QLCNIC_RESETTING, &adapter->state))
return;
@ -2765,22 +2811,7 @@ static void qlcnic_tx_timeout(struct net_device *netdev)
QLCNIC_FORCE_FW_DUMP_KEY);
} else {
netdev_info(netdev, "Tx timeout, reset adapter context.\n");
for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
tx_ring = &adapter->tx_ring[ring];
netdev_info(netdev, "Tx ring=%d\n", ring);
netdev_info(netdev,
"crb_intr_mask=%d, producer=%d, sw_consumer=%d, hw_consumer=%d\n",
readl(tx_ring->crb_intr_mask),
readl(tx_ring->crb_cmd_producer),
tx_ring->sw_consumer,
le32_to_cpu(*(tx_ring->hw_consumer)));
netdev_info(netdev,
"xmit_finished=%llu, xmit_called=%llu, xmit_on=%llu, xmit_off=%llu\n",
tx_ring->tx_stats.xmit_finished,
tx_ring->tx_stats.xmit_called,
tx_ring->tx_stats.xmit_on,
tx_ring->tx_stats.xmit_off);
}
qlcnic_dump_tx_rings(adapter);
adapter->ahw->reset_context = 1;
}
}