From: Yufeng Mo <moyufeng@huawei.com>
Date: Fri, 19 Apr 2019 11:05:47 +0800
Subject: net: hns3: add function type check for debugfs help information
Patch-mainline: v5.2-rc1
Git-commit: 97afd47b36dbe976c72191cf862a92d2e8756fa9
References: bsc#1104353 FATE#326415 bsc#1134980

PF supports all debugfs command, but VF only supports part of
debugfs command. So VF should not show unsupported help information.

This patch adds a check for PF and PF to show the supportable help
information.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c |    6 ++++++
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c    |    2 +-
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.h    |    1 +
 3 files changed, 8 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
@@ -239,6 +239,10 @@ static void hns3_dbg_help(struct hnae3_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");
+
+	if (!hns3_is_phys_func(h->pdev))
+		return;
+
 	dev_info(&h->pdev->dev, "dump fd tcam\n");
 	dev_info(&h->pdev->dev, "dump tc\n");
 	dev_info(&h->pdev->dev, "dump tm map [q_num]\n");
@@ -344,6 +348,8 @@ static ssize_t hns3_dbg_cmd_write(struct
 		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);
+	else
+		ret = -EOPNOTSUPP;
 
 	if (ret)
 		hns3_dbg_help(handle);
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -1764,7 +1764,7 @@ static const struct net_device_ops hns3_
 	.ndo_set_vf_vlan	= hns3_ndo_set_vf_vlan,
 };
 
-static bool hns3_is_phys_func(struct pci_dev *pdev)
+bool hns3_is_phys_func(struct pci_dev *pdev)
 {
 	u32 dev_id = pdev->device;
 
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
@@ -663,6 +663,7 @@ int hns3_init_all_ring(struct hns3_nic_p
 int hns3_uninit_all_ring(struct hns3_nic_priv *priv);
 int hns3_nic_reset_all_ring(struct hnae3_handle *h);
 netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev);
+bool hns3_is_phys_func(struct pci_dev *pdev);
 int hns3_clean_rx_ring(
 		struct hns3_enet_ring *ring, int budget,
 		void (*rx_fn)(struct hns3_enet_ring *, struct sk_buff *));