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DateTue, 22 Jan 2008 04:55:31 -0500
FromJeff Garzik <>
SubjectRe: [PATCH 05/26] atl1: print debug info if rrd error
jacliburn@bellsouth.net wrote:
> From: Jay Cliburn <jacliburn@bellsouth.net>
>
> Add some debug dev_printks if we encounter a bad receive return descriptor.
>
> Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net>
> ---
> drivers/net/atlx/atl1.c | 21 ++++++++++++++++++++-
> 1 files changed, 20 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/net/atlx/atl1.c b/drivers/net/atlx/atl1.c
> index 239641f..262d3ca 100644
> --- a/drivers/net/atlx/atl1.c
> +++ b/drivers/net/atlx/atl1.c
> @@ -1127,7 +1127,26 @@ static void atl1_intr_rx(struct atl1_adapter *adapter)
> if (likely(rrd->xsz.valid)) { /* packet valid */
> chk_rrd:
> /* check rrd status */
> - if (likely(rrd->num_buf == 1))
> + if (rrd->num_buf != 1) {
> + dev_printk(KERN_DEBUG, &adapter->pdev->dev,
> + "rx_buf_len = %d\n",
> + adapter->rx_buffer_len);
> + dev_printk(KERN_DEBUG, &adapter->pdev->dev,
> + "RRD num_buf = %d\n",
> + rrd->num_buf);
> + dev_printk(KERN_DEBUG, &adapter->pdev->dev,
> + "RRD pkt_len = %d\n",
> + rrd->xsz.xsum_sz.pkt_size);
> + dev_printk(KERN_DEBUG, &adapter->pdev->dev,
> + "RRD pkt_flg = 0x%08X\n",
> + rrd->pkt_flg);
> + dev_printk(KERN_DEBUG, &adapter->pdev->dev,
> + "RRD err_flg = 0x%08X\n",
> + rrd->err_flg);
> + dev_printk(KERN_DEBUG, &adapter->pdev->dev,
> + "RRD vlan_tag = 0x%08X\n",
> + rrd->vlan_tag);
> + } else

look into netif_msg_*, which enables via ethtool very fine-grained
selection of messages.



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