Subject: [PATCH net-next 1/2] net: cadence: macb: Convert to get_stats64

From: Sean Anderson <[email-masked]>
Date: Fri, 14 Feb 2025 16:27:02 -0500

Convert the existing get_stats implementation to get_stats64. Since we
now report 64-bit values, increase the counters to 64-bits as well.

Signed-off-by: Sean Anderson <[email-masked]>
---

 drivers/net/ethernet/cadence/macb.h      | 132 +++++++++++------------
 drivers/net/ethernet/cadence/macb_main.c |  34 +++---
 2 files changed, 81 insertions(+), 85 deletions(-)

diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
index 5740c98d8c9f..b4aa2b165bf3 100644
--- a/drivers/net/ethernet/cadence/macb.h
+++ b/drivers/net/ethernet/cadence/macb.h
@@ -951,75 +951,75 @@ struct macb_tx_skb {
  * device stats by a periodic timer.
  */
 struct macb_stats {
-	u32	rx_pause_frames;
-	u32	tx_ok;
-	u32	tx_single_cols;
-	u32	tx_multiple_cols;
-	u32	rx_ok;
-	u32	rx_fcs_errors;
-	u32	rx_align_errors;
-	u32	tx_deferred;
-	u32	tx_late_cols;
-	u32	tx_excessive_cols;
-	u32	tx_underruns;
-	u32	tx_carrier_errors;
-	u32	rx_resource_errors;
-	u32	rx_overruns;
-	u32	rx_symbol_errors;
-	u32	rx_oversize_pkts;
-	u32	rx_jabbers;
-	u32	rx_undersize_pkts;
-	u32	sqe_test_errors;
-	u32	rx_length_mismatch;
-	u32	tx_pause_frames;
+	u64	rx_pause_frames;
+	u64	tx_ok;
+	u64	tx_single_cols;
+	u64	tx_multiple_cols;
+	u64	rx_ok;
+	u64	rx_fcs_errors;
+	u64	rx_align_errors;
+	u64	tx_deferred;
+	u64	tx_late_cols;
+	u64	tx_excessive_cols;
+	u64	tx_underruns;
+	u64	tx_carrier_errors;
+	u64	rx_resource_errors;
+	u64	rx_overruns;
+	u64	rx_symbol_errors;
+	u64	rx_oversize_pkts;
+	u64	rx_jabbers;
+	u64	rx_undersize_pkts;
+	u64	sqe_test_errors;
+	u64	rx_length_mismatch;
+	u64	tx_pause_frames;
 };
 
 struct gem_stats {
-	u32	tx_octets_31_0;
-	u32	tx_octets_47_32;
-	u32	tx_frames;
-	u32	tx_broadcast_frames;
-	u32	tx_multicast_frames;
-	u32	tx_pause_frames;
-	u32	tx_64_byte_frames;
-	u32	tx_65_127_byte_frames;
-	u32	tx_128_255_byte_frames;
-	u32	tx_256_511_byte_frames;
-	u32	tx_512_1023_byte_frames;
-	u32	tx_1024_1518_byte_frames;
-	u32	tx_greater_than_1518_byte_frames;
-	u32	tx_underrun;
-	u32	tx_single_collision_frames;
-	u32	tx_multiple_collision_frames;
-	u32	tx_excessive_collisions;
-	u32	tx_late_collisions;
-	u32	tx_deferred_frames;
-	u32	tx_carrier_sense_errors;
-	u32	rx_octets_31_0;
-	u32	rx_octets_47_32;
-	u32	rx_frames;
-	u32	rx_broadcast_frames;
-	u32	rx_multicast_frames;
-	u32	rx_pause_frames;
-	u32	rx_64_byte_frames;
-	u32	rx_65_127_byte_frames;
-	u32	rx_128_255_byte_frames;
-	u32	rx_256_511_byte_frames;
-	u32	rx_512_1023_byte_frames;
-	u32	rx_1024_1518_byte_frames;
-	u32	rx_greater_than_1518_byte_frames;
-	u32	rx_undersized_frames;
-	u32	rx_oversize_frames;
-	u32	rx_jabbers;
-	u32	rx_frame_check_sequence_errors;
-	u32	rx_length_field_frame_errors;
-	u32	rx_symbol_errors;
-	u32	rx_alignment_errors;
-	u32	rx_resource_errors;
-	u32	rx_overruns;
-	u32	rx_ip_header_checksum_errors;
-	u32	rx_tcp_checksum_errors;
-	u32	rx_udp_checksum_errors;
+	u64	tx_octets_31_0;
+	u64	tx_octets_47_32;
+	u64	tx_frames;
+	u64	tx_broadcast_frames;
+	u64	tx_multicast_frames;
+	u64	tx_pause_frames;
+	u64	tx_64_byte_frames;
+	u64	tx_65_127_byte_frames;
+	u64	tx_128_255_byte_frames;
+	u64	tx_256_511_byte_frames;
+	u64	tx_512_1023_byte_frames;
+	u64	tx_1024_1518_byte_frames;
+	u64	tx_greater_than_1518_byte_frames;
+	u64	tx_underrun;
+	u64	tx_single_collision_frames;
+	u64	tx_multiple_collision_frames;
+	u64	tx_excessive_collisions;
+	u64	tx_late_collisions;
+	u64	tx_deferred_frames;
+	u64	tx_carrier_sense_errors;
+	u64	rx_octets_31_0;
+	u64	rx_octets_47_32;
+	u64	rx_frames;
+	u64	rx_broadcast_frames;
+	u64	rx_multicast_frames;
+	u64	rx_pause_frames;
+	u64	rx_64_byte_frames;
+	u64	rx_65_127_byte_frames;
+	u64	rx_128_255_byte_frames;
+	u64	rx_256_511_byte_frames;
+	u64	rx_512_1023_byte_frames;
+	u64	rx_1024_1518_byte_frames;
+	u64	rx_greater_than_1518_byte_frames;
+	u64	rx_undersized_frames;
+	u64	rx_oversize_frames;
+	u64	rx_jabbers;
+	u64	rx_frame_check_sequence_errors;
+	u64	rx_length_field_frame_errors;
+	u64	rx_symbol_errors;
+	u64	rx_alignment_errors;
+	u64	rx_resource_errors;
+	u64	rx_overruns;
+	u64	rx_ip_header_checksum_errors;
+	u64	rx_tcp_checksum_errors;
+	u64	rx_udp_checksum_errors;
 };
 
 /* Describes the name and offset of an individual statistic register, as
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index 48496209fb16..86f0d705e354 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -990,8 +990,8 @@ static int macb_mii_init(struct macb *bp)
 
 static void macb_update_stats(struct macb *bp)
 {
-	u32 *p = &bp->hw_stats.macb.rx_pause_frames;
-	u32 *end = &bp->hw_stats.macb.tx_pause_frames + 1;
+	u64 *p = &bp->hw_stats.macb.rx_pause_frames;
+	u64 *end = &bp->hw_stats.macb.tx_pause_frames + 1;
 	int offset = MACB_PFR;
 
 	WARN_ON((unsigned long)(end - p - 1) != (MACB_TPF - MACB_PFR) / 4);
@@ -3071,7 +3071,7 @@ static void gem_update_stats(struct macb *bp)
 	unsigned int i, q, idx;
 	unsigned long *stat;
 
-	u32 *p = &bp->hw_stats.gem.tx_octets_31_0;
+	u64 *p = &bp->hw_stats.gem.tx_octets_31_0;
 
 	for (i = 0; i < GEM_STATS_LEN; ++i, ++p) {
 		u32 offset = gem_statistics[i].offset;
@@ -3094,15 +3094,12 @@ static void gem_update_stats(struct macb *bp)
 			bp->ethtool_stats[idx++] = *stat;
 }
 
-static struct net_device_stats *gem_get_stats(struct macb *bp)
+static void gem_get_stats(struct macb *bp, struct rtnl_link_stats64 *nstat)
 {
 	struct gem_stats *hwstat = &bp->hw_stats.gem;
-	struct net_device_stats *nstat = &bp->dev->stats;
 
-	if (!netif_running(bp->dev))
-		return nstat;
-
-	gem_update_stats(bp);
+	if (netif_running(bp->dev))
+		gem_update_stats(bp);
 
 	nstat->rx_errors = (hwstat->rx_frame_check_sequence_errors +
 			    hwstat->rx_alignment_errors +
@@ -3131,8 +3128,6 @@ static struct net_device_stats *gem_get_stats(struct macb *bp)
 	nstat->tx_aborted_errors = hwstat->tx_excessive_collisions;
 	nstat->tx_carrier_errors = hwstat->tx_carrier_sense_errors;
 	nstat->tx_fifo_errors = hwstat->tx_underrun;
-
-	return nstat;
 }
 
 static void gem_get_ethtool_stats(struct net_device *dev,
@@ -3183,14 +3178,17 @@ static void gem_get_ethtool_strings(struct net_device *dev, u32 sset, u8 *p)
 	}
 }
 
-static struct net_device_stats *macb_get_stats(struct net_device *dev)
+static void macb_get_stats(struct net_device *dev,
+			   struct rtnl_link_stats64 *nstat)
 {
 	struct macb *bp = netdev_priv(dev);
-	struct net_device_stats *nstat = &bp->dev->stats;
 	struct macb_stats *hwstat = &bp->hw_stats.macb;
 
-	if (macb_is_gem(bp))
-		return gem_get_stats(bp);
+	netdev_stats_to_stats64(nstat, &bp->dev->stats);
+	if (macb_is_gem(bp)) {
+		gem_get_stats(bp, nstat);
+		return;
+	}
 
 	/* read stats from hardware */
 	macb_update_stats(bp);
@@ -3226,8 +3224,6 @@ static struct net_device_stats *macb_get_stats(struct net_device *dev)
 	nstat->tx_carrier_errors = hwstat->tx_carrier_errors;
 	nstat->tx_fifo_errors = hwstat->tx_underruns;
 	/* Don't know about heartbeat or window errors... */
-
-	return nstat;
 }
 
 static int macb_get_regs_len(struct net_device *netdev)
@@ -3910,7 +3906,7 @@ static const struct net_device_ops macb_netdev_ops = {
 	.ndo_stop		= macb_close,
 	.ndo_start_xmit		= macb_start_xmit,
 	.ndo_set_rx_mode	= macb_set_rx_mode,
-	.ndo_get_stats		= macb_get_stats,
+	.ndo_get_stats64	= macb_get_stats,
 	.ndo_eth_ioctl		= macb_ioctl,
 	.ndo_validate_addr	= eth_validate_addr,
 	.ndo_change_mtu		= macb_change_mtu,
@@ -4571,7 +4567,7 @@ static const struct net_device_ops at91ether_netdev_ops = {
 	.ndo_open		= at91ether_open,
 	.ndo_stop		= at91ether_close,
 	.ndo_start_xmit		= at91ether_start_xmit,
-	.ndo_get_stats		= macb_get_stats,
+	.ndo_get_stats64	= macb_get_stats,
 	.ndo_set_rx_mode	= macb_set_rx_mode,
 	.ndo_set_mac_address	= eth_mac_addr,
 	.ndo_eth_ioctl		= macb_ioctl,
-- 
2.35.1.1320.gc452695387.dirty