octeontx2-pf: Get VF stats via representor

Adds support to export VF port statistics via representor
netdev. Defines new mbox "NIX_LF_STATS" to fetch VF hw stats.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 79 insertions, 27 deletions

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
index ed2bbe72647a..ae0eb08b276c 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
@@ -121,33 +121,6 @@ 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;
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
index 50cebd0af524..197aa21759b5 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
@@ -28,6 +28,68 @@ MODULE_DESCRIPTION(DRV_STRING);
 MODULE_LICENSE("GPL");
 MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
 
+static void rvu_rep_get_stats(struct work_struct *work)
+{
+	struct delayed_work *del_work = to_delayed_work(work);
+	struct nix_stats_req *req;
+	struct nix_stats_rsp *rsp;
+	struct rep_stats *stats;
+	struct otx2_nic *priv;
+	struct rep_dev *rep;
+	int err;
+
+	rep = container_of(del_work, struct rep_dev, stats_wrk);
+	priv = rep->mdev;
+
+	mutex_lock(&priv->mbox.lock);
+	req = otx2_mbox_alloc_msg_nix_lf_stats(&priv->mbox);
+	if (!req) {
+		mutex_unlock(&priv->mbox.lock);
+		return;
+	}
+	req->pcifunc = rep->pcifunc;
+	err = otx2_sync_mbox_msg_busy_poll(&priv->mbox);
+	if (err)
+		goto exit;
+
+	rsp = (struct nix_stats_rsp *)
+	      otx2_mbox_get_rsp(&priv->mbox.mbox, 0, &req->hdr);
+
+	if (IS_ERR(rsp)) {
+		err = PTR_ERR(rsp);
+		goto exit;
+	}
+
+	stats = &rep->stats;
+	stats->rx_bytes = rsp->rx.octs;
+	stats->rx_frames = rsp->rx.ucast + rsp->rx.bcast +
+			    rsp->rx.mcast;
+	stats->rx_drops = rsp->rx.drop;
+	stats->rx_mcast_frames = rsp->rx.mcast;
+	stats->tx_bytes = rsp->tx.octs;
+	stats->tx_frames = rsp->tx.ucast + rsp->tx.bcast + rsp->tx.mcast;
+	stats->tx_drops = rsp->tx.drop;
+exit:
+	mutex_unlock(&priv->mbox.lock);
+}
+
+static void rvu_rep_get_stats64(struct net_device *dev,
+				struct rtnl_link_stats64 *stats)
+{
+	struct rep_dev *rep = netdev_priv(dev);
+
+	stats->rx_packets = rep->stats.rx_frames;
+	stats->rx_bytes = rep->stats.rx_bytes;
+	stats->rx_dropped = rep->stats.rx_drops;
+	stats->multicast = rep->stats.rx_mcast_frames;
+
+	stats->tx_packets = rep->stats.tx_frames;
+	stats->tx_bytes = rep->stats.tx_bytes;
+	stats->tx_dropped = rep->stats.tx_drops;
+
+	schedule_delayed_work(&rep->stats_wrk, msecs_to_jiffies(100));
+}
+
 static int rvu_eswitch_config(struct otx2_nic *priv, u8 ena)
 {
 	struct esw_cfg_req *req;
@@ -87,6 +149,7 @@ static const struct net_device_ops rvu_rep_netdev_ops = {
 	.ndo_open		= rvu_rep_open,
 	.ndo_stop		= rvu_rep_stop,
 	.ndo_start_xmit		= rvu_rep_xmit,
+	.ndo_get_stats64	= rvu_rep_get_stats64,
 };
 
 static int rvu_rep_napi_init(struct otx2_nic *priv,
@@ -290,6 +353,8 @@ int rvu_rep_create(struct otx2_nic *priv, struct netlink_ext_ack *extack)
 			free_netdev(ndev);
 			goto exit;
 		}
+
+		INIT_DELAYED_WORK(&rep->stats_wrk, rvu_rep_get_stats);
 	}
 	err = rvu_rep_napi_init(priv, extack);
 	if (err)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
index c04874c4d4c6..5d39bf636655 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
@@ -17,9 +17,23 @@
 #define PCI_DEVID_RVU_REP	0xA0E0
 
 #define RVU_MAX_REP	OTX2_MAX_CQ_CNT
+
+struct rep_stats {
+	u64 rx_bytes;
+	u64 rx_frames;
+	u64 rx_drops;
+	u64 rx_mcast_frames;
+
+	u64 tx_bytes;
+	u64 tx_frames;
+	u64 tx_drops;
+};
+
 struct rep_dev {
 	struct otx2_nic *mdev;
 	struct net_device *netdev;
+	struct rep_stats stats;
+	struct delayed_work stats_wrk;
 	u16 rep_id;
 	u16 pcifunc;
 };