diff options
| author | Malli Chilakala <mallikarjuna.chilakala@intel.com> | 2005-04-28 19:40:40 -0700 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-05-12 20:48:53 -0400 |
| commit | 70b8f1e16a788eccdd36f39679774b1a08a6ba55 (patch) | |
| tree | ec8314d660c96cff7b594fd0d157a26115e23818 /drivers/net/e1000/e1000_main.c | |
| parent | 2701234fc0372630457e3da14e36cde53c57d12e (diff) | |
| download | lwn-70b8f1e16a788eccdd36f39679774b1a08a6ba55.tar.gz lwn-70b8f1e16a788eccdd36f39679774b1a08a6ba55.zip | |
[PATCH] e1000: Dump information on Tx ring
Dump information on Tx ring when 'NETDEV: Watchdog' condition is reached
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
diff -up net-drivers-2.6/drivers/net/e1000/e1000_main.c net-drivers-2.6/drivers/net/e1000.new/e1000_main.c
Diffstat (limited to 'drivers/net/e1000/e1000_main.c')
| -rw-r--r-- | drivers/net/e1000/e1000_main.c | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 4a8c069e6c7c..b5811f4f88f0 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -2442,10 +2442,37 @@ e1000_clean_tx_irq(struct e1000_adapter *adapter) /* detect a transmit hang in hardware, this serializes the * check with the clearing of time_stamp and movement of i */ adapter->detect_tx_hung = FALSE; - if(tx_ring->buffer_info[i].dma && - time_after(jiffies, tx_ring->buffer_info[i].time_stamp + HZ) && - !(E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_TXOFF)) + if (tx_ring->buffer_info[i].dma && + time_after(jiffies, tx_ring->buffer_info[i].time_stamp + HZ) + && !(E1000_READ_REG(&adapter->hw, STATUS) & + E1000_STATUS_TXOFF)) { + + /* detected Tx unit hang */ + i = tx_ring->next_to_clean; + eop = tx_ring->buffer_info[i].next_to_watch; + eop_desc = E1000_TX_DESC(*tx_ring, eop); + DPRINTK(TX_ERR, ERR, "Detected Tx Unit Hang\n" + " TDH <%x>\n" + " TDT <%x>\n" + " next_to_use <%x>\n" + " next_to_clean <%x>\n" + "buffer_info[next_to_clean]\n" + " dma <%llx>\n" + " time_stamp <%lx>\n" + " next_to_watch <%x>\n" + " jiffies <%lx>\n" + " next_to_watch.status <%x>\n", + E1000_READ_REG(&adapter->hw, TDH), + E1000_READ_REG(&adapter->hw, TDT), + tx_ring->next_to_use, + i, + tx_ring->buffer_info[i].dma, + tx_ring->buffer_info[i].time_stamp, + eop, + jiffies, + eop_desc->upper.fields.status); netif_stop_queue(netdev); + } } #ifdef NETIF_F_TSO |