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Subject[PATCH V2 net-next 1/6] net: hns3: Add "bd info" query function
Date
From: liuzhongzhu <liuzhongzhu@huawei.com>

This patch prints Sending and receiving
package descriptor information.

debugfs command:
echo dump bd info 1 > cmd

Sample Command:
root@(none)# echo bd info 1 > cmd
hns3 0000:7d:00.0: TX Queue Num: 0, BD Index: 0
hns3 0000:7d:00.0: (TX) addr: 0x0
hns3 0000:7d:00.0: (TX)vlan_tag: 0
hns3 0000:7d:00.0: (TX)send_size: 0
hns3 0000:7d:00.0: (TX)vlan_tso: 0
hns3 0000:7d:00.0: (TX)l2_len: 0
hns3 0000:7d:00.0: (TX)l3_len: 0
hns3 0000:7d:00.0: (TX)l4_len: 0
hns3 0000:7d:00.0: (TX)vlan_tag: 0
hns3 0000:7d:00.0: (TX)tv: 0
hns3 0000:7d:00.0: (TX)vlan_msec: 0
hns3 0000:7d:00.0: (TX)ol2_len: 0
hns3 0000:7d:00.0: (TX)ol3_len: 0
hns3 0000:7d:00.0: (TX)ol4_len: 0
hns3 0000:7d:00.0: (TX)paylen: 0
hns3 0000:7d:00.0: (TX)vld_ra_ri: 0
hns3 0000:7d:00.0: (TX)mss: 0
hns3 0000:7d:00.0: RX Queue Num: 0, BD Index: 120
hns3 0000:7d:00.0: (RX)addr: 0xffee7000
hns3 0000:7d:00.0: (RX)pkt_len: 0
hns3 0000:7d:00.0: (RX)size: 0
hns3 0000:7d:00.0: (RX)rss_hash: 0
hns3 0000:7d:00.0: (RX)fd_id: 0
hns3 0000:7d:00.0: (RX)vlan_tag: 0
hns3 0000:7d:00.0: (RX)o_dm_vlan_id_fb: 0
hns3 0000:7d:00.0: (RX)ot_vlan_tag: 0
hns3 0000:7d:00.0: (RX)bd_base_info: 0

Signed-off-by: liuzhongzhu <liuzhongzhu@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c | 79 +++++++++++++++++++++-
1 file changed, 78 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
index 86d667a3730a..9a026556df0e 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
@@ -52,7 +52,7 @@ static int hns3_dbg_queue_info(struct hnae3_handle *h, char *cmd_buf)
test_bit(HNS3_NIC_STATE_RESETTING, &priv->state))
return -EPERM;

- ring = ring_data[i + h->kinfo.num_tqps].ring;
+ ring = ring_data[(u32)(i + h->kinfo.num_tqps)].ring;
base_add_h = readl_relaxed(ring->tqp->io_base +
HNS3_RING_RX_RING_BASEADDR_H_REG);
base_add_l = readl_relaxed(ring->tqp->io_base +
@@ -125,10 +125,85 @@ static int hns3_dbg_queue_info(struct hnae3_handle *h, char *cmd_buf)
return 0;
}

+static int hns3_dbg_bd_info(struct hnae3_handle *h, char *cmd_buf)
+{
+ struct hns3_nic_priv *priv = h->priv;
+ struct hns3_nic_ring_data *ring_data;
+ struct hns3_desc *rx_desc, *tx_desc;
+ struct device *dev = &h->pdev->dev;
+ struct hns3_enet_ring *ring;
+ u32 tx_index, rx_index;
+ u32 q_num, value;
+ int cnt;
+
+ cnt = sscanf(&cmd_buf[8], "%u %u", &q_num, &tx_index);
+ if (cnt == 2) {
+ rx_index = tx_index;
+ } else if (cnt != 1) {
+ dev_err(dev, "bd info: bad command string, cnt=%d\n", cnt);
+ return -EINVAL;
+ }
+
+ if (q_num >= h->kinfo.num_tqps) {
+ dev_err(dev, "Queue number(%u) is out of range(%u)\n", q_num,
+ h->kinfo.num_tqps - 1);
+ return -EINVAL;
+ }
+
+ ring_data = priv->ring_data;
+ ring = ring_data[q_num].ring;
+ value = readl_relaxed(ring->tqp->io_base + HNS3_RING_TX_RING_TAIL_REG);
+ tx_index = (cnt == 1) ? value : tx_index;
+
+ if (tx_index >= ring->desc_num) {
+ dev_err(dev, "bd index (%u) is out of range(%u)\n", tx_index,
+ ring->desc_num - 1);
+ return -EINVAL;
+ }
+
+ tx_desc = &ring->desc[tx_index];
+ dev_info(dev, "TX Queue Num: %u, BD Index: %u\n", q_num, tx_index);
+ dev_info(dev, "(TX) addr: 0x%llx\n", tx_desc->addr);
+ dev_info(dev, "(TX)vlan_tag: %u\n", tx_desc->tx.vlan_tag);
+ dev_info(dev, "(TX)send_size: %u\n", 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);
+ dev_info(dev, "(TX)vlan_tag: %u\n", tx_desc->tx.outer_vlan_tag);
+ dev_info(dev, "(TX)tv: %u\n", 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: %u\n", tx_desc->tx.paylen);
+ dev_info(dev, "(TX)vld_ra_ri: %u\n", tx_desc->tx.bdtp_fe_sc_vld_ra_ri);
+ dev_info(dev, "(TX)mss: %u\n", tx_desc->tx.mss);
+
+ ring = ring_data[q_num + h->kinfo.num_tqps].ring;
+ value = readl_relaxed(ring->tqp->io_base + HNS3_RING_RX_RING_TAIL_REG);
+ rx_index = (cnt == 1) ? value : tx_index;
+ rx_desc = &ring->desc[rx_index];
+
+ dev_info(dev, "RX Queue Num: %u, BD Index: %u\n", q_num, rx_index);
+ dev_info(dev, "(RX)addr: 0x%llx\n", rx_desc->addr);
+ dev_info(dev, "(RX)pkt_len: %u\n", rx_desc->rx.pkt_len);
+ dev_info(dev, "(RX)size: %u\n", rx_desc->rx.size);
+ dev_info(dev, "(RX)rss_hash: %u\n", rx_desc->rx.rss_hash);
+ dev_info(dev, "(RX)fd_id: %u\n", rx_desc->rx.fd_id);
+ dev_info(dev, "(RX)vlan_tag: %u\n", rx_desc->rx.vlan_tag);
+ dev_info(dev, "(RX)o_dm_vlan_id_fb: %u\n", rx_desc->rx.o_dm_vlan_id_fb);
+ dev_info(dev, "(RX)ot_vlan_tag: %u\n", rx_desc->rx.ot_vlan_tag);
+ dev_info(dev, "(RX)bd_base_info: %u\n", rx_desc->rx.bd_base_info);
+
+ return 0;
+}
+
static void hns3_dbg_help(struct hnae3_handle *h)
{
dev_info(&h->pdev->dev, "available commands\n");
dev_info(&h->pdev->dev, "queue info [number]\n");
+ dev_info(&h->pdev->dev, "bd info [q_num] <bd index>\n");
dev_info(&h->pdev->dev, "dump fd tcam\n");
dev_info(&h->pdev->dev, "dump tc\n");
dev_info(&h->pdev->dev, "dump tm\n");
@@ -205,6 +280,8 @@ static ssize_t hns3_dbg_cmd_write(struct file *filp, const char __user *buffer,
hns3_dbg_help(handle);
else if (strncmp(cmd_buf, "queue info", 10) == 0)
ret = hns3_dbg_queue_info(handle, cmd_buf);
+ else if (strncmp(cmd_buf, "bd info", 7) == 0)
+ ret = hns3_dbg_bd_info(handle, cmd_buf);
else if (handle->ae_algo->ops->dbg_run_cmd)
ret = handle->ae_algo->ops->dbg_run_cmd(handle, cmd_buf);

--
2.11.0

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