[PATCH net-next v4 5/8] octeon_ep_vf: add support for ndo ops

[Shinas Rasheed]

Add support for ndo ops to set MAC address, change MTU, get stats.
Add control path support to set MAC address, change MTU, get stats,
set speed, get and set link mode.

Signed-off-by: Shinas Rasheed <srasheed@xxxxxxxxxxx>
---
V4:
  - Provide more stats in ndo_get_stats64 such as tx_dropped, rx_dropped
    etc.

V3: https://lore.kernel.org/all/20240105203823.2953604-6-srasheed@xxxxxxxxxxx/
  - No changes

V2: https://lore.kernel.org/all/20231223134000.2906144-6-srasheed@xxxxxxxxxxx/
  - No changes

V1: https://lore.kernel.org/all/20231221092844.2885872-6-srasheed@xxxxxxxxxxx/

 .../marvell/octeon_ep_vf/octep_vf_main.c      | 58 +++++++++++++++++++
 1 file changed, 58 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c
index 51f92c8223e8..13084cac9ce0 100644
--- a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c
+++ b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c
@@ -187,6 +187,23 @@ static netdev_tx_t octep_vf_start_xmit(struct sk_buff *skb,
 	return NETDEV_TX_OK;
 }
 
+int octep_vf_get_if_stats(struct octep_vf_device *oct)
+{
+	struct octep_vf_iface_rxtx_stats vf_stats;
+	int ret, size;
+
+	memset(&vf_stats, 0, sizeof(struct octep_vf_iface_rxtx_stats));
+	ret = octep_vf_mbox_bulk_read(oct, OCTEP_PFVF_MBOX_CMD_GET_STATS,
+				      (u8 *)&vf_stats, &size);
+	if (!ret) {
+		memcpy(&oct->iface_rx_stats, &vf_stats.iface_rx_stats,
+		       sizeof(struct octep_vf_iface_rx_stats));
+		memcpy(&oct->iface_tx_stats, &vf_stats.iface_tx_stats,
+		       sizeof(struct octep_vf_iface_tx_stats));
+	}
+	return ret;
+}
+
 int octep_vf_get_link_info(struct octep_vf_device *oct)
 {
 	int ret, size;
@@ -200,6 +217,46 @@ int octep_vf_get_link_info(struct octep_vf_device *oct)
 	return 0;
 }
 
+/**
+ * octep_vf_get_stats64() - Get Octeon network device statistics.
+ *
+ * @netdev: kernel network device.
+ * @stats: pointer to stats structure to be filled in.
+ */
+static void octep_vf_get_stats64(struct net_device *netdev,
+				 struct rtnl_link_stats64 *stats)
+{
+	struct octep_vf_device *oct = netdev_priv(netdev);
+	u64 tx_packets, tx_bytes, rx_packets, rx_bytes;
+	int q;
+
+	tx_packets = 0;
+	tx_bytes = 0;
+	rx_packets = 0;
+	rx_bytes = 0;
+	for (q = 0; q < oct->num_oqs; q++) {
+		struct octep_vf_iq *iq = oct->iq[q];
+		struct octep_vf_oq *oq = oct->oq[q];
+
+		tx_packets += iq->stats.instr_completed;
+		tx_bytes += iq->stats.bytes_sent;
+		rx_packets += oq->stats.packets;
+		rx_bytes += oq->stats.bytes;
+	}
+	stats->tx_packets = tx_packets;
+	stats->tx_bytes = tx_bytes;
+	stats->rx_packets = rx_packets;
+	stats->rx_bytes = rx_bytes;
+	if (!octep_vf_get_if_stats(oct)) {
+		stats->multicast = oct->iface_rx_stats.mcast_pkts;
+		stats->rx_errors = oct->iface_rx_stats.err_pkts;
+		stats->rx_dropped = oct->iface_rx_stats.dropped_pkts_fifo_full +
+				    oct->iface_rx_stats.err_pkts;
+		stats->rx_missed_errors = oct->iface_rx_stats.dropped_pkts_fifo_full;
+		stats->tx_dropped = oct->iface_tx_stats.dropped;
+	}
+}
+
 /**
  * octep_vf_tx_timeout_task - work queue task to Handle Tx queue timeout.
  *
@@ -312,6 +369,7 @@ static const struct net_device_ops octep_vf_netdev_ops = {
 	.ndo_open                = octep_vf_open,
 	.ndo_stop                = octep_vf_stop,
 	.ndo_start_xmit          = octep_vf_start_xmit,
+	.ndo_get_stats64         = octep_vf_get_stats64,
 	.ndo_tx_timeout          = octep_vf_tx_timeout,
 	.ndo_set_mac_address     = octep_vf_set_mac,
 	.ndo_change_mtu          = octep_vf_change_mtu,
-- 
2.25.1