net: hns3: add or modify some comments

This patch makes the comment for macro HCLGE_MBX_GET_VF_FLR_STATUS
more correct, and adds comments in some place to make the code more
readable.
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h

@@ -47,7 +47,7 @@ enum HCLGE_MBX_OPCODE {
 	HCLGE_MBX_GET_MEDIA_TYPE,       /* (VF -> PF) get media type */
 	HCLGE_MBX_PUSH_PROMISC_INFO,	/* (PF -> VF) push vf promisc info */
 
-	HCLGE_MBX_GET_VF_FLR_STATUS = 200, /* (M7 -> PF) get vf reset status */
+	HCLGE_MBX_GET_VF_FLR_STATUS = 200, /* (M7 -> PF) get vf flr status */
 	HCLGE_MBX_PUSH_LINK_STATUS,	/* (M7 -> PF) get port link status */
 	HCLGE_MBX_NCSI_ERROR,		/* (M7 -> PF) receive a NCSI error */
 };

drivers/net/ethernet/hisilicon/hns3/hnae3.c

@@ -146,7 +146,7 @@ void hnae3_unregister_client(struct hnae3_client *client)
 		return;
 
 	mutex_lock(&hnae3_common_lock);
-
+	/* one system should only have one client for every type */
 	list_for_each_entry(client_tmp, &hnae3_client_list, node) {
 		if (client_tmp->type == client->type) {
 			existed = true;

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c

@@ -8552,6 +8552,7 @@ int hclge_set_vport_mtu(struct hclge_vport *vport, int new_mtu)
 	struct hclge_dev *hdev = vport->back;
 	int i, max_frm_size, ret;
 
+	/* HW supprt 2 layer vlan */
 	max_frm_size = new_mtu + ETH_HLEN + ETH_FCS_LEN + 2 * VLAN_HLEN;
 	if (max_frm_size < HCLGE_MAC_MIN_FRAME ||
 	    max_frm_size > HCLGE_MAC_MAX_FRAME)
@@ -9314,6 +9315,8 @@ static int hclge_init_ae_dev(struct hnae3_ae_dev *ae_dev)
 	hdev->reset_type = HNAE3_NONE_RESET;
 	hdev->reset_level = HNAE3_FUNC_RESET;
 	ae_dev->priv = hdev;
+
+	/* HW supprt 2 layer vlan */
 	hdev->mps = ETH_FRAME_LEN + ETH_FCS_LEN + 2 * VLAN_HLEN;
 
 	mutex_init(&hdev->vport_lock);