From: Jian Shen <shenjian15@huawei.com>
Date: Fri, 19 Jan 2018 14:41:12 +0800
Subject: net: hns3: add net status led support for fiber port
Patch-mainline: v4.16-rc1
Git-commit: 716aaac1f3f3ee141f550d2d6d7934eab42c1c29
References: bsc#1104353 FATE#326415

Check the net status per second, include port speed, total rx/tx packets
and link status. Updating the led status for fiber port.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h  |    1 
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c |  109 ++++++++++++++++
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h |    3 
 3 files changed, 113 insertions(+)

--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
@@ -115,6 +115,7 @@ enum hclge_opcode_type {
 	HCLGE_OPC_QUERY_LINK_STATUS	= 0x0307,
 	HCLGE_OPC_CONFIG_MAX_FRM_SIZE	= 0x0308,
 	HCLGE_OPC_CONFIG_SPEED_DUP	= 0x0309,
+	HCLGE_OPC_STATS_MAC_TRAFFIC	= 0x0314,
 	/* MACSEC command */
 
 	/* PFC/Pause CMD*/
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -39,6 +39,7 @@ static int hclge_set_mta_filter_mode(str
 static int hclge_set_mtu(struct hnae3_handle *handle, int new_mtu);
 static int hclge_init_vlan_config(struct hclge_dev *hdev);
 static int hclge_reset_ae_dev(struct hnae3_ae_dev *ae_dev);
+static int hclge_update_led_status(struct hclge_dev *hdev);
 
 static struct hnae3_ae_algo ae_algo;
 
@@ -505,6 +506,38 @@ static int hclge_32_bit_update_stats(str
 	return 0;
 }
 
+static int hclge_mac_get_traffic_stats(struct hclge_dev *hdev)
+{
+	struct hclge_mac_stats *mac_stats = &hdev->hw_stats.mac_stats;
+	struct hclge_desc desc;
+	__le64 *desc_data;
+	int ret;
+
+	/* for fiber port, need to query the total rx/tx packets statstics,
+	 * used for data transferring checking.
+	 */
+	if (hdev->hw.mac.media_type != HNAE3_MEDIA_TYPE_FIBER)
+		return 0;
+
+	if (test_bit(HCLGE_STATE_STATISTICS_UPDATING, &hdev->state))
+		return 0;
+
+	hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_STATS_MAC_TRAFFIC, true);
+	ret = hclge_cmd_send(&hdev->hw, &desc, 1);
+	if (ret) {
+		dev_err(&hdev->pdev->dev,
+			"Get MAC total pkt stats fail, ret = %d\n", ret);
+
+		return ret;
+	}
+
+	desc_data = (__le64 *)(&desc.data[0]);
+	mac_stats->mac_tx_total_pkt_num += le64_to_cpu(*desc_data++);
+	mac_stats->mac_rx_total_pkt_num += le64_to_cpu(*desc_data);
+
+	return 0;
+}
+
 static int hclge_mac_update_stats(struct hclge_dev *hdev)
 {
 #define HCLGE_MAC_CMD_NUM 21
@@ -2846,13 +2879,20 @@ static void hclge_service_task(struct wo
 	struct hclge_dev *hdev =
 		container_of(work, struct hclge_dev, service_task);
 
+	/* The total rx/tx packets statstics are wanted to be updated
+	 * per second. Both hclge_update_stats_for_all() and
+	 * hclge_mac_get_traffic_stats() can do it.
+	 */
 	if (hdev->hw_stats.stats_timer >= HCLGE_STATS_TIMER_INTERVAL) {
 		hclge_update_stats_for_all(hdev);
 		hdev->hw_stats.stats_timer = 0;
+	} else {
+		hclge_mac_get_traffic_stats(hdev);
 	}
 
 	hclge_update_speed_duplex(hdev);
 	hclge_update_link_status(hdev);
+	hclge_update_led_status(hdev);
 	hclge_service_complete(hdev);
 }
 
@@ -5889,6 +5929,75 @@ static int hclge_set_led_id(struct hnae3
 	return ret;
 }
 
+enum hclge_led_port_speed {
+	HCLGE_SPEED_LED_FOR_1G,
+	HCLGE_SPEED_LED_FOR_10G,
+	HCLGE_SPEED_LED_FOR_25G,
+	HCLGE_SPEED_LED_FOR_40G,
+	HCLGE_SPEED_LED_FOR_50G,
+	HCLGE_SPEED_LED_FOR_100G,
+};
+
+static u8 hclge_led_get_speed_status(u32 speed)
+{
+	u8 speed_led;
+
+	switch (speed) {
+	case HCLGE_MAC_SPEED_1G:
+		speed_led = HCLGE_SPEED_LED_FOR_1G;
+		break;
+	case HCLGE_MAC_SPEED_10G:
+		speed_led = HCLGE_SPEED_LED_FOR_10G;
+		break;
+	case HCLGE_MAC_SPEED_25G:
+		speed_led = HCLGE_SPEED_LED_FOR_25G;
+		break;
+	case HCLGE_MAC_SPEED_40G:
+		speed_led = HCLGE_SPEED_LED_FOR_40G;
+		break;
+	case HCLGE_MAC_SPEED_50G:
+		speed_led = HCLGE_SPEED_LED_FOR_50G;
+		break;
+	case HCLGE_MAC_SPEED_100G:
+		speed_led = HCLGE_SPEED_LED_FOR_100G;
+		break;
+	default:
+		speed_led = HCLGE_LED_NO_CHANGE;
+	}
+
+	return speed_led;
+}
+
+static int hclge_update_led_status(struct hclge_dev *hdev)
+{
+	u8 port_speed_status, link_status, activity_status;
+	u64 rx_pkts, tx_pkts;
+
+	if (hdev->hw.mac.media_type != HNAE3_MEDIA_TYPE_FIBER)
+		return 0;
+
+	port_speed_status = hclge_led_get_speed_status(hdev->hw.mac.speed);
+
+	rx_pkts = hdev->hw_stats.mac_stats.mac_rx_total_pkt_num;
+	tx_pkts = hdev->hw_stats.mac_stats.mac_tx_total_pkt_num;
+	if (rx_pkts != hdev->rx_pkts_for_led ||
+	    tx_pkts != hdev->tx_pkts_for_led)
+		activity_status = HCLGE_LED_ON;
+	else
+		activity_status = HCLGE_LED_OFF;
+	hdev->rx_pkts_for_led = rx_pkts;
+	hdev->tx_pkts_for_led = tx_pkts;
+
+	if (hdev->hw.mac.link)
+		link_status = HCLGE_LED_ON;
+	else
+		link_status = HCLGE_LED_OFF;
+
+	return hclge_set_led_status_sfp(hdev, port_speed_status,
+					activity_status, link_status,
+					HCLGE_LED_NO_CHANGE);
+}
+
 static const struct hnae3_ae_ops hclge_ops = {
 	.init_ae_dev = hclge_init_ae_dev,
 	.uninit_ae_dev = hclge_uninit_ae_dev,
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
@@ -550,6 +550,9 @@ struct hclge_dev {
 	bool accept_mta_mc; /* Whether accept mta filter multicast */
 
 	struct hclge_vlan_type_cfg vlan_type_cfg;
+
+	u64 rx_pkts_for_led;
+	u64 tx_pkts_for_led;
 };
 
 /* VPort level vlan tag configuration for TX direction */