[PATCH net-next 08/20] net: hns3: Fix an error of total drop packet statistics

Peng Li
2018-01-05T09:49:24Z

From: Jian Shen <shenjian15@huawei.com>

The dropped tx/rx packets number of each tqp should also
be counted into the total drop tx/rx packets numbers.

Fixes: 76ad4f0ee74 ("net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
---
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index a8e4406..eb9ac53 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -1139,6 +1139,8 @@ static int hns3_nic_set_features(struct net_device *netdev,
u64 rx_bytes = 0;
u64 tx_pkts = 0;
u64 rx_pkts = 0;
+ u64 tx_drop = 0;
+ u64 rx_drop = 0;

if (test_bit(HNS3_NIC_STATE_DOWN, &priv->state))
return;
@@ -1152,6 +1154,8 @@ static int hns3_nic_set_features(struct net_device *netdev,
start = u64_stats_fetch_begin_irq(&ring->syncp);
tx_bytes += ring->stats.tx_bytes;
tx_pkts += ring->stats.tx_pkts;
+ tx_drop += ring->stats.tx_busy;
+ tx_drop += ring->stats.sw_err_cnt;
} while (u64_stats_fetch_retry_irq(&ring->syncp, start));

/* fetch the rx stats */
@@ -1160,6 +1164,9 @@ static int hns3_nic_set_features(struct net_device *netdev,
start = u64_stats_fetch_begin_irq(&ring->syncp);
rx_bytes += ring->stats.rx_bytes;
rx_pkts += ring->stats.rx_pkts;
+ rx_drop += ring->stats.non_vld_descs;
+ rx_drop += ring->stats.err_pkt_len;
+ rx_drop += ring->stats.l2_err;
} while (u64_stats_fetch_retry_irq(&ring->syncp, start));
}

@@ -1175,8 +1182,8 @@ static int hns3_nic_set_features(struct net_device *netdev,
stats->rx_missed_errors = netdev->stats.rx_missed_errors;

stats->tx_errors = netdev->stats.tx_errors;
- stats->rx_dropped = netdev->stats.rx_dropped;
- stats->tx_dropped = netdev->stats.tx_dropped;
+ stats->rx_dropped = rx_drop + netdev->stats.rx_dropped;
+ stats->tx_dropped = tx_drop + netdev->stats.tx_dropped;
stats->collisions = netdev->stats.collisions;
stats->rx_over_errors = netdev->stats.rx_over_errors;
stats->rx_frame_errors = netdev->stats.rx_frame_errors;
--
1.9.1