net: qlogic: 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/20241024195534.176410-1-rosenp@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

3 files changed, 50 insertions, 58 deletions

diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_ethtool.c b/drivers/net/ethernet/qlogic/netxen/netxen_nic_ethtool.c
index 8c4cb910e09b..e7d8999049e1 100644
--- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_ethtool.c
+++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_ethtool.c
@@ -648,18 +648,18 @@ netxen_nic_diag_test(struct net_device *dev, struct ethtool_test *eth_test,
 static void
 netxen_nic_get_strings(struct net_device *dev, u32 stringset, u8 *data)
 {
-	int index;
+	const char *str;
+	int i;
 
 	switch (stringset) {
 	case ETH_SS_TEST:
-		memcpy(data, *netxen_nic_gstrings_test,
-		       NETXEN_NIC_TEST_LEN * ETH_GSTRING_LEN);
+		for (i = 0; i < NETXEN_NIC_TEST_LEN; i++)
+			ethtool_puts(&data, netxen_nic_gstrings_test[i]);
 		break;
 	case ETH_SS_STATS:
-		for (index = 0; index < NETXEN_NIC_STATS_LEN; index++) {
-			memcpy(data + index * ETH_GSTRING_LEN,
-			       netxen_nic_gstrings_stats[index].stat_string,
-			       ETH_GSTRING_LEN);
+		for (i = 0; i < NETXEN_NIC_STATS_LEN; i++) {
+			str = netxen_nic_gstrings_stats[i].stat_string;
+			ethtool_puts(&data, str);
 		}
 		break;
 	}
diff --git a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
index 97b059be1041..e50e1df0a433 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
@@ -272,16 +272,14 @@ static void qede_get_strings_stats_txq(struct qede_dev *edev,
 {
 	int i;
 
-	for (i = 0; i < QEDE_NUM_TQSTATS; i++) {
+	for (i = 0; i < QEDE_NUM_TQSTATS; i++)
 		if (txq->is_xdp)
-			sprintf(*buf, "%d [XDP]: %s",
-				QEDE_TXQ_XDP_TO_IDX(edev, txq),
-				qede_tqstats_arr[i].string);
+			ethtool_sprintf(buf, "%d [XDP]: %s",
+					QEDE_TXQ_XDP_TO_IDX(edev, txq),
+					qede_tqstats_arr[i].string);
 		else
-			sprintf(*buf, "%d_%d: %s", txq->index, txq->cos,
-				qede_tqstats_arr[i].string);
-		*buf += ETH_GSTRING_LEN;
-	}
+			ethtool_sprintf(buf, "%d_%d: %s", txq->index, txq->cos,
+					qede_tqstats_arr[i].string);
 }
 
 static void qede_get_strings_stats_rxq(struct qede_dev *edev,
@@ -289,11 +287,9 @@ static void qede_get_strings_stats_rxq(struct qede_dev *edev,
 {
 	int i;
 
-	for (i = 0; i < QEDE_NUM_RQSTATS; i++) {
-		sprintf(*buf, "%d: %s", rxq->rxq_id,
-			qede_rqstats_arr[i].string);
-		*buf += ETH_GSTRING_LEN;
-	}
+	for (i = 0; i < QEDE_NUM_RQSTATS; i++)
+		ethtool_sprintf(buf, "%d: %s", rxq->rxq_id,
+				qede_rqstats_arr[i].string);
 }
 
 static bool qede_is_irrelevant_stat(struct qede_dev *edev, int stat_index)
@@ -331,26 +327,26 @@ static void qede_get_strings_stats(struct qede_dev *edev, u8 *buf)
 	for (i = 0; i < QEDE_NUM_STATS; i++) {
 		if (qede_is_irrelevant_stat(edev, i))
 			continue;
-		strcpy(buf, qede_stats_arr[i].string);
-		buf += ETH_GSTRING_LEN;
+		ethtool_puts(&buf, qede_stats_arr[i].string);
 	}
 }
 
 static void qede_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
 {
 	struct qede_dev *edev = netdev_priv(dev);
+	int i;
 
 	switch (stringset) {
 	case ETH_SS_STATS:
 		qede_get_strings_stats(edev, buf);
 		break;
 	case ETH_SS_PRIV_FLAGS:
-		memcpy(buf, qede_private_arr,
-		       ETH_GSTRING_LEN * QEDE_PRI_FLAG_LEN);
+		for (i = 0; i < QEDE_PRI_FLAG_LEN; i++)
+			ethtool_puts(&buf, qede_private_arr[i]);
 		break;
 	case ETH_SS_TEST:
-		memcpy(buf, qede_tests_str_arr,
-		       ETH_GSTRING_LEN * QEDE_ETHTOOL_TEST_MAX);
+		for (i = 0; i < QEDE_ETHTOOL_TEST_MAX; i++)
+			ethtool_puts(&buf, qede_tests_str_arr[i]);
 		break;
 	default:
 		DP_VERBOSE(edev, QED_MSG_DEBUG,
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
index c1436e1554de..17450e05c437 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
@@ -1196,60 +1196,56 @@ qlcnic_get_strings(struct net_device *dev, u32 stringset, u8 *data)
 {
 	struct qlcnic_adapter *adapter = netdev_priv(dev);
 	int index, i, num_stats;
+	const char *str;
 
 	switch (stringset) {
 	case ETH_SS_TEST:
-		memcpy(data, *qlcnic_gstrings_test,
-		       QLCNIC_TEST_LEN * ETH_GSTRING_LEN);
+		for (i = 0; i < QLCNIC_TEST_LEN; i++)
+			ethtool_puts(&data, qlcnic_gstrings_test[i]);
 		break;
 	case ETH_SS_STATS:
 		num_stats = ARRAY_SIZE(qlcnic_tx_queue_stats_strings);
-		for (i = 0; i < adapter->drv_tx_rings; i++) {
+		for (i = 0; i < adapter->drv_tx_rings; i++)
 			for (index = 0; index < num_stats; index++) {
-				sprintf(data, "tx_queue_%d %s", i,
-					qlcnic_tx_queue_stats_strings[index]);
-				data += ETH_GSTRING_LEN;
+				str = qlcnic_tx_queue_stats_strings[index];
+				ethtool_sprintf(&data, "tx_queue_%d %s", i,
+						str);
 			}
-		}
 
-		for (index = 0; index < QLCNIC_STATS_LEN; index++) {
-			memcpy(data + index * ETH_GSTRING_LEN,
-			       qlcnic_gstrings_stats[index].stat_string,
-			       ETH_GSTRING_LEN);
+		for (i = 0; i < QLCNIC_STATS_LEN; i++) {
+			str = qlcnic_gstrings_stats[i].stat_string;
+			ethtool_puts(&data, str);
 		}
 
 		if (qlcnic_83xx_check(adapter)) {
 			num_stats = ARRAY_SIZE(qlcnic_83xx_tx_stats_strings);
-			for (i = 0; i < num_stats; i++, index++)
-				memcpy(data + index * ETH_GSTRING_LEN,
-				       qlcnic_83xx_tx_stats_strings[i],
-				       ETH_GSTRING_LEN);
+			for (i = 0; i < num_stats; i++) {
+				str = qlcnic_83xx_tx_stats_strings[i];
+				ethtool_puts(&data, str);
+			}
 			num_stats = ARRAY_SIZE(qlcnic_83xx_mac_stats_strings);
-			for (i = 0; i < num_stats; i++, index++)
-				memcpy(data + index * ETH_GSTRING_LEN,
-				       qlcnic_83xx_mac_stats_strings[i],
-				       ETH_GSTRING_LEN);
+			for (i = 0; i < num_stats; i++) {
+				str = qlcnic_83xx_mac_stats_strings[i];
+				ethtool_puts(&data, str);
+			}
 			num_stats = ARRAY_SIZE(qlcnic_83xx_rx_stats_strings);
-			for (i = 0; i < num_stats; i++, index++)
-				memcpy(data + index * ETH_GSTRING_LEN,
-				       qlcnic_83xx_rx_stats_strings[i],
-				       ETH_GSTRING_LEN);
+			for (i = 0; i < num_stats; i++) {
+				str = qlcnic_83xx_rx_stats_strings[i];
+				ethtool_puts(&data, str);
+			}
 			return;
 		} else {
 			num_stats = ARRAY_SIZE(qlcnic_83xx_mac_stats_strings);
-			for (i = 0; i < num_stats; i++, index++)
-				memcpy(data + index * ETH_GSTRING_LEN,
-				       qlcnic_83xx_mac_stats_strings[i],
-				       ETH_GSTRING_LEN);
+			for (i = 0; i < num_stats; i++) {
+				str = qlcnic_83xx_mac_stats_strings[i];
+				ethtool_puts(&data, str);
+			}
 		}
 		if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED))
 			return;
 		num_stats = ARRAY_SIZE(qlcnic_device_gstrings_stats);
-		for (i = 0; i < num_stats; index++, i++) {
-			memcpy(data + index * ETH_GSTRING_LEN,
-			       qlcnic_device_gstrings_stats[i],
-			       ETH_GSTRING_LEN);
-		}
+		for (i = 0; i < num_stats; i++)
+			ethtool_puts(&data, qlcnic_device_gstrings_stats[i]);
 	}
 }