netdev - [RFC PATCH net-next] net: hns3: add dql info when tx timeout

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Message-ID: <20210916064203.24614-1-moyufeng@huawei.com>
Date:   Thu, 16 Sep 2021 14:42:03 +0800
From:   Yufeng Mo <moyufeng@...wei.com>
To:     <davem@...emloft.net>, <kuba@...nel.org>
CC:     <netdev@...r.kernel.org>, <shenjian15@...wei.com>,
        <lipeng321@...wei.com>, <yisen.zhuang@...wei.com>,
        <linyunsheng@...wei.com>, <huangguangbin2@...wei.com>,
        <chenhao288@...ilicon.com>, <salil.mehta@...wei.com>,
        <moyufeng@...wei.com>, <linuxarm@...wei.com>,
        <linuxarm@...neuler.org>
Subject: [RFC PATCH net-next] net: hns3: add dql info when tx timeout

When tx timeout occurs, the info of dql maybe helpful, so print
these info to hns3_get_tx_timeo_queue_info().

Signed-off-by: Yufeng Mo <moyufeng@...wei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 22af3d6ce178..d590f920ffee 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -2677,6 +2677,13 @@ static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev)
 		if (netif_xmit_stopped(q) &&
 		    time_after(jiffies,
 			       (trans_start + ndev->watchdog_timeo))) {
+#ifdef CONFIG_BQL
+			struct dql *dql = &q->dql;
+
+			netdev_info(ndev, "DQL info last_cnt: %u, queued: %u, adj_limit: %u, completed: %u\n",
+				    dql->last_obj_cnt, dql->num_queued,
+				    dql->adj_limit, dql->num_completed);
+#endif
 			timeout_queue = i;
 			netdev_info(ndev, "queue state: 0x%lx, delta msecs: %u\n",
 				    q->state,
-- 
2.33.0