linux-kernel - [PATCH net-next 06/10] net: hns3: add debugfs to dump device capabilities

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Date:   Sun, 27 Sep 2020 15:12:44 +0800
From:   Huazhong Tan <tanhuazhong@...wei.com>
To:     <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <salil.mehta@...wei.com>, <yisen.zhuang@...wei.com>,
        <linuxarm@...wei.com>, <kuba@...nel.org>,
        Guangbin Huang <huangguangbin2@...wei.com>,
        Huazhong Tan <tanhuazhong@...wei.com>
Subject: [PATCH net-next 06/10] net: hns3: add debugfs to dump device capabilities

From: Guangbin Huang <huangguangbin2@...wei.com>

Adds debugfs to dump each device capability whether is supported.

Signed-off-by: Guangbin Huang <huangguangbin2@...wei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@...wei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
index 4fab82c..15333ec 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
@@ -244,6 +244,7 @@ static void hns3_dbg_help(struct hnae3_handle *h)
 	dev_info(&h->pdev->dev, "queue info <number>\n");
 	dev_info(&h->pdev->dev, "queue map\n");
 	dev_info(&h->pdev->dev, "bd info <q_num> <bd index>\n");
+	dev_info(&h->pdev->dev, "dev capability\n");
 
 	if (!hns3_is_phys_func(h->pdev))
 		return;
@@ -285,6 +286,27 @@ static void hns3_dbg_help(struct hnae3_handle *h)
 	dev_info(&h->pdev->dev, "%s", printf_buf);
 }
 
+static void hns3_dbg_dev_caps(struct hnae3_handle *h)
+{
+	struct hnae3_ae_dev *ae_dev = pci_get_drvdata(h->pdev);
+	unsigned long *caps;
+
+	caps = ae_dev->caps;
+
+	dev_info(&h->pdev->dev, "support FD: %s\n",
+		 test_bit(HNAE3_DEV_SUPPORT_FD_B, caps) ? "yes" : "no");
+	dev_info(&h->pdev->dev, "support GRO: %s\n",
+		 test_bit(HNAE3_DEV_SUPPORT_GRO_B, caps) ? "yes" : "no");
+	dev_info(&h->pdev->dev, "support FEC: %s\n",
+		 test_bit(HNAE3_DEV_SUPPORT_FEC_B, caps) ? "yes" : "no");
+	dev_info(&h->pdev->dev, "support UDP GSO: %s\n",
+		 test_bit(HNAE3_DEV_SUPPORT_UDP_GSO_B, caps) ? "yes" : "no");
+	dev_info(&h->pdev->dev, "support PTP: %s\n",
+		 test_bit(HNAE3_DEV_SUPPORT_PTP_B, caps) ? "yes" : "no");
+	dev_info(&h->pdev->dev, "support INT QL: %s\n",
+		 test_bit(HNAE3_DEV_SUPPORT_INT_QL_B, caps) ? "yes" : "no");
+}
+
 static ssize_t hns3_dbg_cmd_read(struct file *filp, char __user *buffer,
 				 size_t count, loff_t *ppos)
 {
@@ -360,6 +382,8 @@ static ssize_t hns3_dbg_cmd_write(struct file *filp, const char __user *buffer,
 		ret = hns3_dbg_queue_map(handle);
 	else if (strncmp(cmd_buf, "bd info", 7) == 0)
 		ret = hns3_dbg_bd_info(handle, cmd_buf);
+	else if (strncmp(cmd_buf, "dev capability", 14) == 0)
+		hns3_dbg_dev_caps(handle);
 	else if (handle->ae_algo->ops->dbg_run_cmd)
 		ret = handle->ae_algo->ops->dbg_run_cmd(handle, cmd_buf);
 	else
-- 
2.7.4