linux-kernel - [PATCH net-next 4/4] net: hns3: add dql info when tx timeout

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Message-ID: <20211124010654.6753-5-huangguangbin2@huawei.com>
Date:   Wed, 24 Nov 2021 09:06:54 +0800
From:   Guangbin Huang <huangguangbin2@...wei.com>
To:     <davem@...emloft.net>, <kuba@...nel.org>, <wangjie125@...wei.com>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <lipeng321@...wei.com>, <huangguangbin2@...wei.com>,
        <chenhao288@...ilicon.com>
Subject: [PATCH net-next 4/4] net: hns3: add dql info when tx timeout

From: Yufeng Mo <moyufeng@...wei.com>

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>
Signed-off-by: Guangbin Huang <huangguangbin2@...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 0225d6091cf2..496ddf397bd4 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -2683,6 +2683,13 @@ 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