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Date:   Mon, 27 Jan 2020 18:35:27 +0530
From:   sunil.kovvuri@...il.com
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kubakici@...pl, mkubecek@...e.cz,
        maciej.fijalkowski@...el.com, Geetha sowjanya <gakula@...vell.com>,
        Sunil Goutham <sgoutham@...vell.com>
Subject: [PATCH v6 13/17] octeontx2-pf: Add ndo_get_stats64

From: Geetha sowjanya <gakula@...vell.com>

Added ndo_get_stats64 which returns stats maintained by HW.

Signed-off-by: Geetha sowjanya <gakula@...vell.com>
Signed-off-by: Sunil Goutham <sgoutham@...vell.com>
---
 .../ethernet/marvell/octeontx2/nic/otx2_common.c   | 47 +++++++++++++++++++++
 .../ethernet/marvell/octeontx2/nic/otx2_common.h   | 49 ++++++++++++++++++++++
 .../net/ethernet/marvell/octeontx2/nic/otx2_pf.c   |  1 +
 3 files changed, 97 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
index c674171..c4be787 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
@@ -16,6 +16,53 @@
 #include "otx2_common.h"
 #include "otx2_struct.h"
 
+void otx2_get_dev_stats(struct otx2_nic *pfvf)
+{
+	struct otx2_dev_stats *dev_stats = &pfvf->hw.dev_stats;
+
+#define OTX2_GET_RX_STATS(reg) \
+	 otx2_read64(pfvf, NIX_LF_RX_STATX(reg))
+#define OTX2_GET_TX_STATS(reg) \
+	 otx2_read64(pfvf, NIX_LF_TX_STATX(reg))
+
+	dev_stats->rx_bytes = OTX2_GET_RX_STATS(RX_OCTS);
+	dev_stats->rx_drops = OTX2_GET_RX_STATS(RX_DROP);
+	dev_stats->rx_bcast_frames = OTX2_GET_RX_STATS(RX_BCAST);
+	dev_stats->rx_mcast_frames = OTX2_GET_RX_STATS(RX_MCAST);
+	dev_stats->rx_ucast_frames = OTX2_GET_RX_STATS(RX_UCAST);
+	dev_stats->rx_frames = dev_stats->rx_bcast_frames +
+			       dev_stats->rx_mcast_frames +
+			       dev_stats->rx_ucast_frames;
+
+	dev_stats->tx_bytes = OTX2_GET_TX_STATS(TX_OCTS);
+	dev_stats->tx_drops = OTX2_GET_TX_STATS(TX_DROP);
+	dev_stats->tx_bcast_frames = OTX2_GET_TX_STATS(TX_BCAST);
+	dev_stats->tx_mcast_frames = OTX2_GET_TX_STATS(TX_MCAST);
+	dev_stats->tx_ucast_frames = OTX2_GET_TX_STATS(TX_UCAST);
+	dev_stats->tx_frames = dev_stats->tx_bcast_frames +
+			       dev_stats->tx_mcast_frames +
+			       dev_stats->tx_ucast_frames;
+}
+
+void otx2_get_stats64(struct net_device *netdev,
+		      struct rtnl_link_stats64 *stats)
+{
+	struct otx2_nic *pfvf = netdev_priv(netdev);
+	struct otx2_dev_stats *dev_stats;
+
+	otx2_get_dev_stats(pfvf);
+
+	dev_stats = &pfvf->hw.dev_stats;
+	stats->rx_bytes = dev_stats->rx_bytes;
+	stats->rx_packets = dev_stats->rx_frames;
+	stats->rx_dropped = dev_stats->rx_drops;
+	stats->multicast = dev_stats->rx_mcast_frames;
+
+	stats->tx_bytes = dev_stats->tx_bytes;
+	stats->tx_packets = dev_stats->tx_frames;
+	stats->tx_dropped = dev_stats->tx_drops;
+}
+
 /* Sync MAC address with RVU AF */
 static int otx2_hw_set_mac_addr(struct otx2_nic *pfvf, u8 *mac)
 {
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
index 1598396..ce7a552 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
@@ -81,6 +81,49 @@ enum otx2_errcodes_re {
 	ERRCODE_IL4_CSUM = 0x22,
 };
 
+/* NIX TX stats */
+enum nix_stat_lf_tx {
+	TX_UCAST	= 0x0,
+	TX_BCAST	= 0x1,
+	TX_MCAST	= 0x2,
+	TX_DROP		= 0x3,
+	TX_OCTS		= 0x4,
+	TX_STATS_ENUM_LAST,
+};
+
+/* NIX RX stats */
+enum nix_stat_lf_rx {
+	RX_OCTS		= 0x0,
+	RX_UCAST	= 0x1,
+	RX_BCAST	= 0x2,
+	RX_MCAST	= 0x3,
+	RX_DROP		= 0x4,
+	RX_DROP_OCTS	= 0x5,
+	RX_FCS		= 0x6,
+	RX_ERR		= 0x7,
+	RX_DRP_BCAST	= 0x8,
+	RX_DRP_MCAST	= 0x9,
+	RX_DRP_L3BCAST	= 0xa,
+	RX_DRP_L3MCAST	= 0xb,
+	RX_STATS_ENUM_LAST,
+};
+
+struct otx2_dev_stats {
+	u64 rx_bytes;
+	u64 rx_frames;
+	u64 rx_ucast_frames;
+	u64 rx_bcast_frames;
+	u64 rx_mcast_frames;
+	u64 rx_drops;
+
+	u64 tx_bytes;
+	u64 tx_frames;
+	u64 tx_ucast_frames;
+	u64 tx_bcast_frames;
+	u64 tx_mcast_frames;
+	u64 tx_drops;
+};
+
 /* Driver counted stats */
 struct otx2_drv_stats {
 	atomic_t rx_fcs_errs;
@@ -142,6 +185,7 @@ struct otx2_hw {
 	cpumask_var_t           *affinity_mask;
 
 	/* Stats */
+	struct otx2_dev_stats	dev_stats;
 	struct otx2_drv_stats	drv_stats;
 };
 
@@ -545,6 +589,11 @@ void mbox_handler_nix_lf_alloc(struct otx2_nic *pfvf,
 void mbox_handler_nix_txsch_alloc(struct otx2_nic *pf,
 				  struct nix_txsch_alloc_rsp *rsp);
 
+/* Device stats APIs */
+void otx2_get_dev_stats(struct otx2_nic *pfvf);
+void otx2_get_stats64(struct net_device *netdev,
+		      struct rtnl_link_stats64 *stats);
+
 int otx2_open(struct net_device *netdev);
 int otx2_stop(struct net_device *netdev);
 #endif /* OTX2_COMMON_H */
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index d080936..3092634 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -1073,6 +1073,7 @@ static const struct net_device_ops otx2_netdev_ops = {
 	.ndo_set_rx_mode	= otx2_set_rx_mode,
 	.ndo_set_features	= otx2_set_features,
 	.ndo_tx_timeout		= otx2_tx_timeout,
+	.ndo_get_stats64	= otx2_get_stats64,
 };
 
 static int otx2_check_pf_usable(struct otx2_nic *nic)
-- 
2.7.4

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