netdev - [PATCH V2 net-next 5/7] net: hns3: add more info to hns3_dbg_bd

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Date:   Sat, 28 Nov 2020 11:51:48 +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>,
        Huazhong Tan <tanhuazhong@...wei.com>
Subject: [PATCH V2 net-next 5/7] net: hns3: add more info to hns3_dbg_bd_info()

Since TX hardware checksum and RX completion checksum have been
supported now, so add related information in hns3_dbg_bd_info().

Signed-off-by: Huazhong Tan <tanhuazhong@...wei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c | 50 +++++++++++++++++-----
 1 file changed, 40 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
index cb0cc6d..cb26742 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
@@ -179,6 +179,7 @@ static int hns3_dbg_bd_info(struct hnae3_handle *h, const char *cmd_buf)
 	u32 q_num, value;
 	dma_addr_t addr;
 	u16 mss_hw_csum;
+	u32 l234info;
 	int cnt;
 
 	cnt = sscanf(&cmd_buf[8], "%u %u", &q_num, &tx_index);
@@ -213,17 +214,35 @@ static int hns3_dbg_bd_info(struct hnae3_handle *h, const char *cmd_buf)
 	dev_info(dev, "(TX)vlan_tag: %u\n", le16_to_cpu(tx_desc->tx.vlan_tag));
 	dev_info(dev, "(TX)send_size: %u\n",
 		 le16_to_cpu(tx_desc->tx.send_size));
-	dev_info(dev, "(TX)vlan_tso: %u\n", tx_desc->tx.type_cs_vlan_tso);
-	dev_info(dev, "(TX)l2_len: %u\n", tx_desc->tx.l2_len);
-	dev_info(dev, "(TX)l3_len: %u\n", tx_desc->tx.l3_len);
-	dev_info(dev, "(TX)l4_len: %u\n", tx_desc->tx.l4_len);
+
+	if (mss_hw_csum & BIT(HNS3_TXD_HW_CS_B)) {
+		u32 offset = le32_to_cpu(tx_desc->tx.ol_type_vlan_len_msec);
+		u32 start = le32_to_cpu(tx_desc->tx.type_cs_vlan_tso_len);
+
+		dev_info(dev, "(TX)csum start: %u\n",
+			 hnae3_get_field(start,
+					 HNS3_TXD_CSUM_START_M,
+					 HNS3_TXD_CSUM_START_S));
+		dev_info(dev, "(TX)csum offset: %u\n",
+			 hnae3_get_field(offset,
+					 HNS3_TXD_CSUM_OFFSET_M,
+					 HNS3_TXD_CSUM_OFFSET_S));
+	} else {
+		dev_info(dev, "(TX)vlan_tso: %u\n",
+			 tx_desc->tx.type_cs_vlan_tso);
+		dev_info(dev, "(TX)l2_len: %u\n", tx_desc->tx.l2_len);
+		dev_info(dev, "(TX)l3_len: %u\n", tx_desc->tx.l3_len);
+		dev_info(dev, "(TX)l4_len: %u\n", tx_desc->tx.l4_len);
+		dev_info(dev, "(TX)vlan_msec: %u\n",
+			 tx_desc->tx.ol_type_vlan_msec);
+		dev_info(dev, "(TX)ol2_len: %u\n", tx_desc->tx.ol2_len);
+		dev_info(dev, "(TX)ol3_len: %u\n", tx_desc->tx.ol3_len);
+		dev_info(dev, "(TX)ol4_len: %u\n", tx_desc->tx.ol4_len);
+	}
+
 	dev_info(dev, "(TX)vlan_tag: %u\n",
 		 le16_to_cpu(tx_desc->tx.outer_vlan_tag));
 	dev_info(dev, "(TX)tv: %u\n", le16_to_cpu(tx_desc->tx.tv));
-	dev_info(dev, "(TX)vlan_msec: %u\n", tx_desc->tx.ol_type_vlan_msec);
-	dev_info(dev, "(TX)ol2_len: %u\n", tx_desc->tx.ol2_len);
-	dev_info(dev, "(TX)ol3_len: %u\n", tx_desc->tx.ol3_len);
-	dev_info(dev, "(TX)ol4_len: %u\n", tx_desc->tx.ol4_len);
 	dev_info(dev, "(TX)paylen_ol4cs: %u\n",
 		 le32_to_cpu(tx_desc->tx.paylen_ol4cs));
 	dev_info(dev, "(TX)vld_ra_ri: %u\n",
@@ -236,10 +255,21 @@ static int hns3_dbg_bd_info(struct hnae3_handle *h, const char *cmd_buf)
 	rx_desc = &ring->desc[rx_index];
 
 	addr = le64_to_cpu(rx_desc->addr);
+	l234info = le32_to_cpu(rx_desc->rx.l234_info);
 	dev_info(dev, "RX Queue Num: %u, BD Index: %u\n", q_num, rx_index);
 	dev_info(dev, "(RX)addr: %pad\n", &addr);
-	dev_info(dev, "(RX)l234_info: %u\n",
-		 le32_to_cpu(rx_desc->rx.l234_info));
+	dev_info(dev, "(RX)l234_info: %u\n", l234info);
+
+	if (l234info & BIT(HNS3_RXD_L2_CSUM_B)) {
+		u32 lo, hi;
+
+		lo = hnae3_get_field(l234info, HNS3_RXD_L2_CSUM_L_M,
+				     HNS3_RXD_L2_CSUM_L_S);
+		hi = hnae3_get_field(l234info, HNS3_RXD_L2_CSUM_H_M,
+				     HNS3_RXD_L2_CSUM_H_S);
+		dev_info(dev, "(RX)csum: %u\n", lo | hi << 8);
+	}
+
 	dev_info(dev, "(RX)pkt_len: %u\n", le16_to_cpu(rx_desc->rx.pkt_len));
 	dev_info(dev, "(RX)size: %u\n", le16_to_cpu(rx_desc->rx.size));
 	dev_info(dev, "(RX)rss_hash: %u\n", le32_to_cpu(rx_desc->rx.rss_hash));
-- 
2.7.4