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    Subject[PATCH AUTOSEL 5.4 185/350] net: hns3: add struct netdev_queue debug info for TX timeout
    Date
    From: Yunsheng Lin <linyunsheng@huawei.com>

    [ Upstream commit 647522a5ef6401dcdb8ec417421e43fb21910167 ]

    When there is a TX timeout, we can tell if the driver or stack
    has stopped the queue by looking at state field, and when has
    the last packet transmited by looking at trans_start field.

    So this patch prints these two field in the
    hns3_get_tx_timeo_queue_info().

    Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
    Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
    index 616cad0faa211..84d8816c8681b 100644
    --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
    +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
    @@ -1692,6 +1692,9 @@ static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev)
    time_after(jiffies,
    (trans_start + ndev->watchdog_timeo))) {
    timeout_queue = i;
    + netdev_info(ndev, "queue state: 0x%lx, delta msecs: %u\n",
    + q->state,
    + jiffies_to_msecs(jiffies - trans_start));
    break;
    }
    }
    --
    2.20.1
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