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[PATCH] e1000: Dump information on Tx ring

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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
This commit is contained in:
Malli Chilakala 2005-04-28 19:40:40 -07:00 committed by Jeff Garzik
parent 2701234fc0
commit 70b8f1e16a
1 changed files with 30 additions and 3 deletions
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33
drivers/net/e1000/e1000_main.c
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@ -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