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net: hns3: Add "bd info" query function
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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>
Signed-off-by: David S. Miller <davem@davemloft.net>
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liuzhongzhu authored and David S. Miller committed Dec 15, 2018
1 parent b9948e1 commit 122bedc
Showing 1 changed file with 78 additions and 1 deletion.
79 changes: 78 additions & 1 deletion drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -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 +
Expand Down Expand Up @@ -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");
Expand Down Expand Up @@ -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);

Expand Down

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