net: marvell: use ethtool string helpers

The latter is the preferred way to copy ethtool strings.

Avoids manually incrementing the pointer. Cleans up the code quite well.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20241024195833.176843-1-rosenp@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

6 files changed, 68 insertions, 117 deletions

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index 103632ba78a2..571631a30320 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -1985,45 +1985,32 @@ static void mvpp2_ethtool_get_strings(struct net_device *netdev, u32 sset,
 				      u8 *data)
 {
 	struct mvpp2_port *port = netdev_priv(netdev);
+	const char *str;
 	int i, q;
 
 	if (sset != ETH_SS_STATS)
 		return;
 
-	for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_mib_regs); i++) {
-		strscpy(data, mvpp2_ethtool_mib_regs[i].string,
-			ETH_GSTRING_LEN);
-		data += ETH_GSTRING_LEN;
-	}
+	for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_mib_regs); i++)
+		ethtool_puts(&data, mvpp2_ethtool_mib_regs[i].string);
 
-	for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_port_regs); i++) {
-		strscpy(data, mvpp2_ethtool_port_regs[i].string,
-			ETH_GSTRING_LEN);
-		data += ETH_GSTRING_LEN;
-	}
+	for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_port_regs); i++)
+		ethtool_puts(&data, mvpp2_ethtool_port_regs[i].string);
 
-	for (q = 0; q < port->ntxqs; q++) {
+	for (q = 0; q < port->ntxqs; q++)
 		for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_txq_regs); i++) {
-			snprintf(data, ETH_GSTRING_LEN,
-				 mvpp2_ethtool_txq_regs[i].string, q);
-			data += ETH_GSTRING_LEN;
+			str = mvpp2_ethtool_txq_regs[i].string;
+			ethtool_sprintf(&data, str, q);
 		}
-	}
 
-	for (q = 0; q < port->nrxqs; q++) {
+	for (q = 0; q < port->nrxqs; q++)
 		for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_rxq_regs); i++) {
-			snprintf(data, ETH_GSTRING_LEN,
-				 mvpp2_ethtool_rxq_regs[i].string,
-				 q);
-			data += ETH_GSTRING_LEN;
+			str = mvpp2_ethtool_rxq_regs[i].string;
+			ethtool_sprintf(&data, str, q);
 		}
-	}
 
-	for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_xdp); i++) {
-		strscpy(data, mvpp2_ethtool_xdp[i].string,
-			ETH_GSTRING_LEN);
-		data += ETH_GSTRING_LEN;
-	}
+	for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_xdp); i++)
+		ethtool_puts(&data, mvpp2_ethtool_xdp[i].string);
 }
 
 static void
diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_ethtool.c b/drivers/net/ethernet/marvell/octeon_ep/octep_ethtool.c
index 7d0124b283da..4f4d58189118 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_ethtool.c
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_ethtool.c
@@ -47,7 +47,7 @@ static const char octep_gstrings_global_stats[][ETH_GSTRING_LEN] = {
 	"rx_err_pkts",
 };
 
-#define OCTEP_GLOBAL_STATS_CNT (sizeof(octep_gstrings_global_stats) / ETH_GSTRING_LEN)
+#define OCTEP_GLOBAL_STATS_CNT ARRAY_SIZE(octep_gstrings_global_stats)
 
 static const char octep_gstrings_tx_q_stats[][ETH_GSTRING_LEN] = {
 	"tx_packets_posted[Q-%u]",
@@ -56,7 +56,7 @@ static const char octep_gstrings_tx_q_stats[][ETH_GSTRING_LEN] = {
 	"tx_busy[Q-%u]",
 };
 
-#define OCTEP_TX_Q_STATS_CNT (sizeof(octep_gstrings_tx_q_stats) / ETH_GSTRING_LEN)
+#define OCTEP_TX_Q_STATS_CNT ARRAY_SIZE(octep_gstrings_tx_q_stats)
 
 static const char octep_gstrings_rx_q_stats[][ETH_GSTRING_LEN] = {
 	"rx_packets[Q-%u]",
@@ -64,7 +64,7 @@ static const char octep_gstrings_rx_q_stats[][ETH_GSTRING_LEN] = {
 	"rx_alloc_errors[Q-%u]",
 };
 
-#define OCTEP_RX_Q_STATS_CNT (sizeof(octep_gstrings_rx_q_stats) / ETH_GSTRING_LEN)
+#define OCTEP_RX_Q_STATS_CNT ARRAY_SIZE(octep_gstrings_rx_q_stats)
 
 static void octep_get_drvinfo(struct net_device *netdev,
 			      struct ethtool_drvinfo *info)
@@ -80,32 +80,25 @@ static void octep_get_strings(struct net_device *netdev,
 {
 	struct octep_device *oct = netdev_priv(netdev);
 	u16 num_queues = CFG_GET_PORTS_ACTIVE_IO_RINGS(oct->conf);
-	char *strings = (char *)data;
+	const char *str;
 	int i, j;
 
 	switch (stringset) {
 	case ETH_SS_STATS:
-		for (i = 0; i < OCTEP_GLOBAL_STATS_CNT; i++) {
-			snprintf(strings, ETH_GSTRING_LEN,
-				 octep_gstrings_global_stats[i]);
-			strings += ETH_GSTRING_LEN;
-		}
+		for (i = 0; i < OCTEP_GLOBAL_STATS_CNT; i++)
+			ethtool_puts(&data, octep_gstrings_global_stats[i]);
 
-		for (i = 0; i < num_queues; i++) {
+		for (i = 0; i < num_queues; i++)
 			for (j = 0; j < OCTEP_TX_Q_STATS_CNT; j++) {
-				snprintf(strings, ETH_GSTRING_LEN,
-					 octep_gstrings_tx_q_stats[j], i);
-				strings += ETH_GSTRING_LEN;
+				str = octep_gstrings_tx_q_stats[j];
+				ethtool_sprintf(&data, str, i);
 			}
-		}
 
-		for (i = 0; i < num_queues; i++) {
+		for (i = 0; i < num_queues; i++)
 			for (j = 0; j < OCTEP_RX_Q_STATS_CNT; j++) {
-				snprintf(strings, ETH_GSTRING_LEN,
-					 octep_gstrings_rx_q_stats[j], i);
-				strings += ETH_GSTRING_LEN;
+				str = octep_gstrings_rx_q_stats[j];
+				ethtool_sprintf(&data, str, i);
 			}
-		}
 		break;
 	default:
 		break;
diff --git a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_ethtool.c b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_ethtool.c
index a1979b45e355..7b21439a315f 100644
--- a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_ethtool.c
+++ b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_ethtool.c
@@ -25,7 +25,7 @@ static const char octep_vf_gstrings_global_stats[][ETH_GSTRING_LEN] = {
 	"rx_dropped_bytes_fifo_full",
 };
 
-#define OCTEP_VF_GLOBAL_STATS_CNT (sizeof(octep_vf_gstrings_global_stats) / ETH_GSTRING_LEN)
+#define OCTEP_VF_GLOBAL_STATS_CNT ARRAY_SIZE(octep_vf_gstrings_global_stats)
 
 static const char octep_vf_gstrings_tx_q_stats[][ETH_GSTRING_LEN] = {
 	"tx_packets_posted[Q-%u]",
@@ -34,7 +34,7 @@ static const char octep_vf_gstrings_tx_q_stats[][ETH_GSTRING_LEN] = {
 	"tx_busy[Q-%u]",
 };
 
-#define OCTEP_VF_TX_Q_STATS_CNT (sizeof(octep_vf_gstrings_tx_q_stats) / ETH_GSTRING_LEN)
+#define OCTEP_VF_TX_Q_STATS_CNT ARRAY_SIZE(octep_vf_gstrings_tx_q_stats)
 
 static const char octep_vf_gstrings_rx_q_stats[][ETH_GSTRING_LEN] = {
 	"rx_packets[Q-%u]",
@@ -42,7 +42,7 @@ static const char octep_vf_gstrings_rx_q_stats[][ETH_GSTRING_LEN] = {
 	"rx_alloc_errors[Q-%u]",
 };
 
-#define OCTEP_VF_RX_Q_STATS_CNT (sizeof(octep_vf_gstrings_rx_q_stats) / ETH_GSTRING_LEN)
+#define OCTEP_VF_RX_Q_STATS_CNT ARRAY_SIZE(octep_vf_gstrings_rx_q_stats)
 
 static void octep_vf_get_drvinfo(struct net_device *netdev,
 				 struct ethtool_drvinfo *info)
@@ -58,32 +58,25 @@ static void octep_vf_get_strings(struct net_device *netdev,
 {
 	struct octep_vf_device *oct = netdev_priv(netdev);
 	u16 num_queues = CFG_GET_PORTS_ACTIVE_IO_RINGS(oct->conf);
-	char *strings = (char *)data;
+	const char *str;
 	int i, j;
 
 	switch (stringset) {
 	case ETH_SS_STATS:
-		for (i = 0; i < OCTEP_VF_GLOBAL_STATS_CNT; i++) {
-			snprintf(strings, ETH_GSTRING_LEN,
-				 octep_vf_gstrings_global_stats[i]);
-			strings += ETH_GSTRING_LEN;
-		}
+		for (i = 0; i < OCTEP_VF_GLOBAL_STATS_CNT; i++)
+			ethtool_puts(&data, octep_vf_gstrings_global_stats[i]);
 
-		for (i = 0; i < num_queues; i++) {
+		for (i = 0; i < num_queues; i++)
 			for (j = 0; j < OCTEP_VF_TX_Q_STATS_CNT; j++) {
-				snprintf(strings, ETH_GSTRING_LEN,
-					 octep_vf_gstrings_tx_q_stats[j], i);
-				strings += ETH_GSTRING_LEN;
+				str = octep_vf_gstrings_tx_q_stats[j];
+				ethtool_sprintf(&data, str, i);
 			}
-		}
 
-		for (i = 0; i < num_queues; i++) {
+		for (i = 0; i < num_queues; i++)
 			for (j = 0; j < OCTEP_VF_RX_Q_STATS_CNT; j++) {
-				snprintf(strings, ETH_GSTRING_LEN,
-					 octep_vf_gstrings_rx_q_stats[j], i);
-				strings += ETH_GSTRING_LEN;
+				str = octep_vf_gstrings_rx_q_stats[j];
+				ethtool_sprintf(&data, str, i);
 			}
-		}
 		break;
 	default:
 		break;
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
index 5197ce816581..2d53dc77ef1e 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
@@ -85,26 +85,22 @@ static void otx2_get_qset_strings(struct otx2_nic *pfvf, u8 **data, int qset)
 	int start_qidx = qset * pfvf->hw.rx_queues;
 	int qidx, stats;
 
-	for (qidx = 0; qidx < pfvf->hw.rx_queues; qidx++) {
-		for (stats = 0; stats < otx2_n_queue_stats; stats++) {
-			sprintf(*data, "rxq%d: %s", qidx + start_qidx,
-				otx2_queue_stats[stats].name);
-			*data += ETH_GSTRING_LEN;
-		}
-	}
+	for (qidx = 0; qidx < pfvf->hw.rx_queues; qidx++)
+		for (stats = 0; stats < otx2_n_queue_stats; stats++)
+			ethtool_sprintf(data, "rxq%d: %s", qidx + start_qidx,
+					otx2_queue_stats[stats].name);
 
-	for (qidx = 0; qidx < otx2_get_total_tx_queues(pfvf); qidx++) {
-		for (stats = 0; stats < otx2_n_queue_stats; stats++) {
+	for (qidx = 0; qidx < otx2_get_total_tx_queues(pfvf); qidx++)
+		for (stats = 0; stats < otx2_n_queue_stats; stats++)
 			if (qidx >= pfvf->hw.non_qos_queues)
-				sprintf(*data, "txq_qos%d: %s",
-					qidx + start_qidx - pfvf->hw.non_qos_queues,
-					otx2_queue_stats[stats].name);
+				ethtool_sprintf(data, "txq_qos%d: %s",
+						qidx + start_qidx -
+							pfvf->hw.non_qos_queues,
+						otx2_queue_stats[stats].name);
 			else
-				sprintf(*data, "txq%d: %s", qidx + start_qidx,
-					otx2_queue_stats[stats].name);
-			*data += ETH_GSTRING_LEN;
-		}
-	}
+				ethtool_sprintf(data, "txq%d: %s",
+						qidx + start_qidx,
+						otx2_queue_stats[stats].name);
 }
 
 static void otx2_get_strings(struct net_device *netdev, u32 sset, u8 *data)
@@ -115,36 +111,25 @@ static void otx2_get_strings(struct net_device *netdev, u32 sset, u8 *data)
 	if (sset != ETH_SS_STATS)
 		return;
 
-	for (stats = 0; stats < otx2_n_dev_stats; stats++) {
-		memcpy(data, otx2_dev_stats[stats].name, ETH_GSTRING_LEN);
-		data += ETH_GSTRING_LEN;
-	}
+	for (stats = 0; stats < otx2_n_dev_stats; stats++)
+		ethtool_puts(&data, otx2_dev_stats[stats].name);
 
-	for (stats = 0; stats < otx2_n_drv_stats; stats++) {
-		memcpy(data, otx2_drv_stats[stats].name, ETH_GSTRING_LEN);
-		data += ETH_GSTRING_LEN;
-	}
+	for (stats = 0; stats < otx2_n_drv_stats; stats++)
+		ethtool_puts(&data, otx2_drv_stats[stats].name);
 
 	otx2_get_qset_strings(pfvf, &data, 0);
 
 	if (!test_bit(CN10K_RPM, &pfvf->hw.cap_flag)) {
-		for (stats = 0; stats < CGX_RX_STATS_COUNT; stats++) {
-			sprintf(data, "cgx_rxstat%d: ", stats);
-			data += ETH_GSTRING_LEN;
-		}
+		for (stats = 0; stats < CGX_RX_STATS_COUNT; stats++)
+			ethtool_sprintf(&data, "cgx_rxstat%d: ", stats);
 
-		for (stats = 0; stats < CGX_TX_STATS_COUNT; stats++) {
-			sprintf(data, "cgx_txstat%d: ", stats);
-			data += ETH_GSTRING_LEN;
-		}
+		for (stats = 0; stats < CGX_TX_STATS_COUNT; stats++)
+			ethtool_sprintf(&data, "cgx_txstat%d: ", stats);
 	}
 
-	strcpy(data, "reset_count");
-	data += ETH_GSTRING_LEN;
-	sprintf(data, "Fec Corrected Errors: ");
-	data += ETH_GSTRING_LEN;
-	sprintf(data, "Fec Uncorrected Errors: ");
-	data += ETH_GSTRING_LEN;
+	ethtool_puts(&data, "reset_count");
+	ethtool_puts(&data, "Fec Corrected Errors: ");
+	ethtool_puts(&data, "Fec Uncorrected Errors: ");
 }
 
 static void otx2_get_qset_stats(struct otx2_nic *pfvf,
@@ -1375,20 +1360,15 @@ static void otx2vf_get_strings(struct net_device *netdev, u32 sset, u8 *data)
 	if (sset != ETH_SS_STATS)
 		return;
 
-	for (stats = 0; stats < otx2_n_dev_stats; stats++) {
-		memcpy(data, otx2_dev_stats[stats].name, ETH_GSTRING_LEN);
-		data += ETH_GSTRING_LEN;
-	}
+	for (stats = 0; stats < otx2_n_dev_stats; stats++)
+		ethtool_puts(&data, otx2_dev_stats[stats].name);
 
-	for (stats = 0; stats < otx2_n_drv_stats; stats++) {
-		memcpy(data, otx2_drv_stats[stats].name, ETH_GSTRING_LEN);
-		data += ETH_GSTRING_LEN;
-	}
+	for (stats = 0; stats < otx2_n_drv_stats; stats++)
+		ethtool_puts(&data, otx2_drv_stats[stats].name);
 
 	otx2_get_qset_strings(vf, &data, 0);
 
-	strcpy(data, "reset_count");
-	data += ETH_GSTRING_LEN;
+	ethtool_puts(&data, "reset_count");
 }
 
 static void otx2vf_get_ethtool_stats(struct net_device *netdev,
diff --git a/drivers/net/ethernet/marvell/skge.c b/drivers/net/ethernet/marvell/skge.c
index fcfb34561882..25bf6ec44289 100644
--- a/drivers/net/ethernet/marvell/skge.c
+++ b/drivers/net/ethernet/marvell/skge.c
@@ -484,8 +484,7 @@ static void skge_get_strings(struct net_device *dev, u32 stringset, u8 *data)
 	switch (stringset) {
 	case ETH_SS_STATS:
 		for (i = 0; i < ARRAY_SIZE(skge_stats); i++)
-			memcpy(data + i * ETH_GSTRING_LEN,
-			       skge_stats[i].name, ETH_GSTRING_LEN);
+			ethtool_puts(&data, skge_stats[i].name);
 		break;
 	}
 }
diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
index a7a16eac1891..3914cd9210d4 100644
--- a/drivers/net/ethernet/marvell/sky2.c
+++ b/drivers/net/ethernet/marvell/sky2.c
@@ -3800,8 +3800,7 @@ static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
 	switch (stringset) {
 	case ETH_SS_STATS:
 		for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
-			memcpy(data + i * ETH_GSTRING_LEN,
-			       sky2_stats[i].name, ETH_GSTRING_LEN);
+			ethtool_puts(&data, sky2_stats[i].name);
 		break;
 	}
 }