From: Jian Shen <shenjian15@huawei.com>
Date: Wed, 23 Jan 2019 07:39:28 +0800
Subject: net: hns3: add rx multicast packets statistic
Patch-mainline: v5.1-rc1
Git-commit: c376fa1aae6328beb5551e92fa84f4441fdde399
References: bsc#1126390

This patch adds rx multicast packets statistic for each ring.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@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_enet.c    |    6 ++++++
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.h    |    8 ++++++++
 drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c |    1 +
 3 files changed, 15 insertions(+)

--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -2573,6 +2573,7 @@ static int hns3_handle_rx_bd(struct hns3
 			     struct sk_buff **out_skb)
 {
 	struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
+	enum hns3_pkt_l2t_type l2_frame_type;
 	struct sk_buff *skb = ring->skb;
 	struct hns3_desc_cb *desc_cb;
 	struct hns3_desc *desc;
@@ -2681,7 +2682,12 @@ static int hns3_handle_rx_bd(struct hns3
 		return -EFAULT;
 	}
 
+	l2_frame_type = hnae3_get_field(l234info, HNS3_RXD_DMAC_M,
+					HNS3_RXD_DMAC_S);
 	u64_stats_update_begin(&ring->syncp);
+	if (l2_frame_type == HNS3_L2_TYPE_MULTICAST)
+		ring->stats.rx_multicast++;
+
 	ring->stats.rx_pkts++;
 	ring->stats.rx_bytes += skb->len;
 	u64_stats_update_end(&ring->syncp);
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
@@ -202,6 +202,13 @@ enum hns3_nic_state {
 
 #define HNS3_RING_EN_B				0
 
+enum hns3_pkt_l2t_type {
+	HNS3_L2_TYPE_UNICAST,
+	HNS3_L2_TYPE_MULTICAST,
+	HNS3_L2_TYPE_BROADCAST,
+	HNS3_L2_TYPE_INVALID,
+};
+
 enum hns3_pkt_l3t_type {
 	HNS3_L3T_NONE,
 	HNS3_L3T_IPV6,
@@ -376,6 +383,7 @@ struct ring_stats {
 			u64 err_bd_num;
 			u64 l2_err;
 			u64 l3l4_csum_err;
+			u64 rx_multicast;
 		};
 	};
 };
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
@@ -47,6 +47,7 @@ static const struct hns3_stats hns3_rxq_
 	HNS3_TQP_STAT("err_bd_num", err_bd_num),
 	HNS3_TQP_STAT("l2_err", l2_err),
 	HNS3_TQP_STAT("l3l4_csum_err", l3l4_csum_err),
+	HNS3_TQP_STAT("multicast", rx_multicast),
 };
 
 #define HNS3_RXQ_STATS_COUNT ARRAY_SIZE(hns3_rxq_stats)