net: hns3: add struct netdev_queue debug info for TX timeout

BugLink: https://bugs.launchpad.net/bugs/1859712
[ 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>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index def2f6385ab6083611f2642d91137dc34fd25f26..edf16ca2f535d28afabbda7d22143956959983b4 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -1605,6 +1605,9 @@ 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;
                }
        }