[PATCH net-next V1 1/5] net: lan743x: Add support to display Tx Queue statistics

Raju Lakkaraju
2022-03-17T10:43:31Z

Tx 4 queue statistics display through ethtool application

Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microchip.com>
---
.../net/ethernet/microchip/lan743x_ethtool.c | 31 +++++++++++++++++++
drivers/net/ethernet/microchip/lan743x_main.c | 1 +
drivers/net/ethernet/microchip/lan743x_main.h | 1 +
3 files changed, 33 insertions(+)

diff --git a/drivers/net/ethernet/microchip/lan743x_ethtool.c b/drivers/net/ethernet/microchip/lan743x_ethtool.c
index 5f1e7b8bad4f..d13d284cdaea 100644
--- a/drivers/net/ethernet/microchip/lan743x_ethtool.c
+++ b/drivers/net/ethernet/microchip/lan743x_ethtool.c
@@ -365,6 +365,14 @@ static const char lan743x_set1_sw_cnt_strings[][ETH_GSTRING_LEN] = {
"RX Queue 3 Frames",
};

+static const char lan743x_tx_queue_cnt_strings[][ETH_GSTRING_LEN] = {
+ "TX Queue 0 Frames",
+ "TX Queue 1 Frames",
+ "TX Queue 2 Frames",
+ "TX Queue 3 Frames",
+ "TX Total Queue Frames",
+};
+
static const char lan743x_set2_hw_cnt_strings[][ETH_GSTRING_LEN] = {
"RX Total Frames",
"EEE RX LPI Transitions",
@@ -462,6 +470,8 @@ static const char lan743x_priv_flags_strings[][ETH_GSTRING_LEN] = {
static void lan743x_ethtool_get_strings(struct net_device *netdev,
u32 stringset, u8 *data)
{
+ struct lan743x_adapter *adapter = netdev_priv(netdev);
+
switch (stringset) {
case ETH_SS_STATS:
memcpy(data, lan743x_set0_hw_cnt_strings,
@@ -473,6 +483,13 @@ static void lan743x_ethtool_get_strings(struct net_device *netdev,
sizeof(lan743x_set1_sw_cnt_strings)],
lan743x_set2_hw_cnt_strings,
sizeof(lan743x_set2_hw_cnt_strings));
+ if (adapter->is_pci11x1x) {
+ memcpy(&data[sizeof(lan743x_set0_hw_cnt_strings) +
+ sizeof(lan743x_set1_sw_cnt_strings) +
+ sizeof(lan743x_set2_hw_cnt_strings)],
+ lan743x_tx_queue_cnt_strings,
+ sizeof(lan743x_tx_queue_cnt_strings));
+ }
break;
case ETH_SS_PRIV_FLAGS:
memcpy(data, lan743x_priv_flags_strings,
@@ -486,7 +503,9 @@ static void lan743x_ethtool_get_ethtool_stats(struct net_device *netdev,
u64 *data)
{
struct lan743x_adapter *adapter = netdev_priv(netdev);
+ u64 total_queue_count = 0;
int data_index = 0;
+ u64 pkt_cnt;
u32 buf;
int i;

@@ -500,6 +519,14 @@ static void lan743x_ethtool_get_ethtool_stats(struct net_device *netdev,
buf = lan743x_csr_read(adapter, lan743x_set2_hw_cnt_addr[i]);
data[data_index++] = (u64)buf;
}
+ if (adapter->is_pci11x1x) {
+ for (i = 0; i < ARRAY_SIZE(adapter->tx); i++) {
+ pkt_cnt = (u64)(adapter->tx[i].frame_count);
+ data[data_index++] = pkt_cnt;
+ total_queue_count += pkt_cnt;
+ }
+ data[data_index++] = total_queue_count;
+ }
}

static u32 lan743x_ethtool_get_priv_flags(struct net_device *netdev)
@@ -520,6 +547,8 @@ static int lan743x_ethtool_set_priv_flags(struct net_device *netdev, u32 flags)

static int lan743x_ethtool_get_sset_count(struct net_device *netdev, int sset)
{
+ struct lan743x_adapter *adapter = netdev_priv(netdev);
+
switch (sset) {
case ETH_SS_STATS:
{
@@ -528,6 +557,8 @@ static int lan743x_ethtool_get_sset_count(struct net_device *netdev, int sset)
ret = ARRAY_SIZE(lan743x_set0_hw_cnt_strings);
ret += ARRAY_SIZE(lan743x_set1_sw_cnt_strings);
ret += ARRAY_SIZE(lan743x_set2_hw_cnt_strings);
+ if (adapter->is_pci11x1x)
+ ret += ARRAY_SIZE(lan743x_tx_queue_cnt_strings);
return ret;
}
case ETH_SS_PRIV_FLAGS:
diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c
index 5282d25a6f9b..7ace3ed35778 100644
--- a/drivers/net/ethernet/microchip/lan743x_main.c
+++ b/drivers/net/ethernet/microchip/lan743x_main.c
@@ -1776,6 +1776,7 @@ static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx,
dev_kfree_skb_irq(skb);
goto unlock;
}
+ tx->frame_count++;

if (gso)
lan743x_tx_frame_add_lso(tx, frame_length, nr_frags);
diff --git a/drivers/net/ethernet/microchip/lan743x_main.h b/drivers/net/ethernet/microchip/lan743x_main.h
index 2c8e76b4e1f7..bca9f105900c 100644
--- a/drivers/net/ethernet/microchip/lan743x_main.h
+++ b/drivers/net/ethernet/microchip/lan743x_main.h
@@ -715,6 +715,7 @@ struct lan743x_tx {
int last_tail;

struct napi_struct napi;
+ u32 frame_count;

struct sk_buff *overflow_skb;
};
--
2.25.1