net: hisilicon: hns: 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: Jijie Shao <shaojijie@huawei.com>
Link: https://patch.msgid.link/20241101220023.290926-1-rosenp@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

13 files changed, 122 insertions, 157 deletions

diff --git a/drivers/net/ethernet/hisilicon/hns/hnae.h b/drivers/net/ethernet/hisilicon/hns/hnae.h
index d72657444ef3..2ae34d01fd36 100644
--- a/drivers/net/ethernet/hisilicon/hns/hnae.h
+++ b/drivers/net/ethernet/hisilicon/hns/hnae.h
@@ -512,7 +512,7 @@ struct hnae_ae_ops {
 			     struct net_device_stats *net_stats);
 	void (*get_stats)(struct hnae_handle *handle, u64 *data);
 	void (*get_strings)(struct hnae_handle *handle,
-			    u32 stringset, u8 *data);
+			    u32 stringset, u8 **data);
 	int (*get_sset_count)(struct hnae_handle *handle, int stringset);
 	void (*update_led_status)(struct hnae_handle *handle);
 	int (*set_led_id)(struct hnae_handle *handle,
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
index bc3e406f0139..8ce910f8d0cc 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
@@ -730,15 +730,14 @@ static void hns_ae_get_stats(struct hnae_handle *handle, u64 *data)
 		hns_dsaf_get_stats(vf_cb->dsaf_dev, p, vf_cb->port_index);
 }
 
-static void hns_ae_get_strings(struct hnae_handle *handle,
-			       u32 stringset, u8 *data)
+static void hns_ae_get_strings(struct hnae_handle *handle, u32 stringset,
+			       u8 **data)
 {
 	int port;
 	int idx;
 	struct hns_mac_cb *mac_cb;
 	struct hns_ppe_cb *ppe_cb;
 	struct dsaf_device *dsaf_dev = hns_ae_get_dsaf_dev(handle->dev);
-	u8 *p = data;
 	struct	hnae_vf_cb *vf_cb;
 
 	assert(handle);
@@ -748,19 +747,14 @@ static void hns_ae_get_strings(struct hnae_handle *handle,
 	mac_cb = hns_get_mac_cb(handle);
 	ppe_cb = hns_get_ppe_cb(handle);
 
-	for (idx = 0; idx < handle->q_num; idx++) {
-		hns_rcb_get_strings(stringset, p, idx);
-		p += ETH_GSTRING_LEN * hns_rcb_get_ring_sset_count(stringset);
-	}
-
-	hns_ppe_get_strings(ppe_cb, stringset, p);
-	p += ETH_GSTRING_LEN * hns_ppe_get_sset_count(stringset);
+	for (idx = 0; idx < handle->q_num; idx++)
+		hns_rcb_get_strings(stringset, data, idx);
 
-	hns_mac_get_strings(mac_cb, stringset, p);
-	p += ETH_GSTRING_LEN * hns_mac_get_sset_count(mac_cb, stringset);
+	hns_ppe_get_strings(ppe_cb, stringset, data);
+	hns_mac_get_strings(mac_cb, stringset, data);
 
 	if (mac_cb->mac_type == HNAE_PORT_SERVICE)
-		hns_dsaf_get_strings(stringset, p, port, dsaf_dev);
+		hns_dsaf_get_strings(stringset, data, port, dsaf_dev);
 }
 
 static int hns_ae_get_sset_count(struct hnae_handle *handle, int stringset)
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
index bdb7afaabdd0..400933ca1a29 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
@@ -669,16 +669,15 @@ static void hns_gmac_get_stats(void *mac_drv, u64 *data)
 	}
 }
 
-static void hns_gmac_get_strings(u32 stringset, u8 *data)
+static void hns_gmac_get_strings(u32 stringset, u8 **data)
 {
-	u8 *buff = data;
 	u32 i;
 
 	if (stringset != ETH_SS_STATS)
 		return;
 
 	for (i = 0; i < ARRAY_SIZE(g_gmac_stats_string); i++)
-		ethtool_puts(&buff, g_gmac_stats_string[i].desc);
+		ethtool_puts(data, g_gmac_stats_string[i].desc);
 }
 
 static int hns_gmac_get_sset_count(int stringset)
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c
index 5fa9b2eeb929..bc6b269be299 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c
@@ -1190,8 +1190,7 @@ void hns_mac_get_stats(struct hns_mac_cb *mac_cb, u64 *data)
 	mac_ctrl_drv->get_ethtool_stats(mac_ctrl_drv, data);
 }
 
-void hns_mac_get_strings(struct hns_mac_cb *mac_cb,
-			 int stringset, u8 *data)
+void hns_mac_get_strings(struct hns_mac_cb *mac_cb, int stringset, u8 **data)
 {
 	struct mac_driver *mac_ctrl_drv = hns_mac_get_drv(mac_cb);
 
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h
index edf0bcf76ac9..630f01cf7a71 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h
@@ -378,7 +378,7 @@ struct mac_driver {
 	void (*get_regs)(void *mac_drv, void *data);
 	int (*get_regs_count)(void);
 	/* get strings name for ethtool statistic */
-	void (*get_strings)(u32 stringset, u8 *data);
+	void (*get_strings)(u32 stringset, u8 **data);
 	/* get the number of strings*/
 	int (*get_sset_count)(int stringset);
 
@@ -445,7 +445,7 @@ int hns_mac_config_mac_loopback(struct hns_mac_cb *mac_cb,
 				enum hnae_loop loop, int en);
 void hns_mac_update_stats(struct hns_mac_cb *mac_cb);
 void hns_mac_get_stats(struct hns_mac_cb *mac_cb, u64 *data);
-void hns_mac_get_strings(struct hns_mac_cb *mac_cb, int stringset, u8 *data);
+void hns_mac_get_strings(struct hns_mac_cb *mac_cb, int stringset, u8 **data);
 int hns_mac_get_sset_count(struct hns_mac_cb *mac_cb, int stringset);
 void hns_mac_get_regs(struct hns_mac_cb *mac_cb, void *data);
 int hns_mac_get_regs_count(struct hns_mac_cb *mac_cb);
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
index eb60f45a3460..851490346261 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
@@ -2590,55 +2590,34 @@ void hns_dsaf_get_regs(struct dsaf_device *ddev, u32 port, void *data)
 		p[i] = 0xdddddddd;
 }
 
-static char *hns_dsaf_get_node_stats_strings(char *data, int node,
-					     struct dsaf_device *dsaf_dev)
+static void hns_dsaf_get_node_stats_strings(u8 **data, int node,
+					    struct dsaf_device *dsaf_dev)
 {
-	char *buff = data;
-	int i;
 	bool is_ver1 = AE_IS_VER1(dsaf_dev->dsaf_ver);
+	int i;
 
-	snprintf(buff, ETH_GSTRING_LEN, "innod%d_pad_drop_pkts", node);
-	buff += ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "innod%d_manage_pkts", node);
-	buff += ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "innod%d_rx_pkts", node);
-	buff += ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "innod%d_rx_pkt_id", node);
-	buff += ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "innod%d_rx_pause_frame", node);
-	buff += ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "innod%d_release_buf_num", node);
-	buff += ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "innod%d_sbm_drop_pkts", node);
-	buff += ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "innod%d_crc_false_pkts", node);
-	buff += ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "innod%d_bp_drop_pkts", node);
-	buff += ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "innod%d_lookup_rslt_drop_pkts", node);
-	buff += ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "innod%d_local_rslt_fail_pkts", node);
-	buff += ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "innod%d_vlan_drop_pkts", node);
-	buff += ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "innod%d_stp_drop_pkts", node);
-	buff += ETH_GSTRING_LEN;
+	ethtool_sprintf(data, "innod%d_pad_drop_pkts", node);
+	ethtool_sprintf(data, "innod%d_manage_pkts", node);
+	ethtool_sprintf(data, "innod%d_rx_pkts", node);
+	ethtool_sprintf(data, "innod%d_rx_pkt_id", node);
+	ethtool_sprintf(data, "innod%d_rx_pause_frame", node);
+	ethtool_sprintf(data, "innod%d_release_buf_num", node);
+	ethtool_sprintf(data, "innod%d_sbm_drop_pkts", node);
+	ethtool_sprintf(data, "innod%d_crc_false_pkts", node);
+	ethtool_sprintf(data, "innod%d_bp_drop_pkts", node);
+	ethtool_sprintf(data, "innod%d_lookup_rslt_drop_pkts", node);
+	ethtool_sprintf(data, "innod%d_local_rslt_fail_pkts", node);
+	ethtool_sprintf(data, "innod%d_vlan_drop_pkts", node);
+	ethtool_sprintf(data, "innod%d_stp_drop_pkts", node);
 	if (node < DSAF_SERVICE_NW_NUM && !is_ver1) {
 		for (i = 0; i < DSAF_PRIO_NR; i++) {
-			snprintf(buff + 0 * ETH_GSTRING_LEN * DSAF_PRIO_NR,
-				 ETH_GSTRING_LEN, "inod%d_pfc_prio%d_pkts",
-				 node, i);
-			snprintf(buff + 1 * ETH_GSTRING_LEN * DSAF_PRIO_NR,
-				 ETH_GSTRING_LEN, "onod%d_pfc_prio%d_pkts",
-				 node, i);
-			buff += ETH_GSTRING_LEN;
+			ethtool_sprintf(data, "inod%d_pfc_prio%d_pkts", node,
+					i);
+			ethtool_sprintf(data, "onod%d_pfc_prio%d_pkts", node,
+					i);
 		}
-		buff += 1 * DSAF_PRIO_NR * ETH_GSTRING_LEN;
 	}
-	snprintf(buff, ETH_GSTRING_LEN, "onnod%d_tx_pkts", node);
-	buff += ETH_GSTRING_LEN;
-
-	return buff;
+	ethtool_sprintf(data, "onnod%d_tx_pkts", node);
 }
 
 static u64 *hns_dsaf_get_node_stats(struct dsaf_device *ddev, u64 *data,
@@ -2720,21 +2699,20 @@ int hns_dsaf_get_sset_count(struct dsaf_device *dsaf_dev, int stringset)
  *@port:port index
  *@dsaf_dev: dsaf device
  */
-void hns_dsaf_get_strings(int stringset, u8 *data, int port,
+void hns_dsaf_get_strings(int stringset, u8 **data, int port,
 			  struct dsaf_device *dsaf_dev)
 {
-	char *buff = (char *)data;
 	int node = port;
 
 	if (stringset != ETH_SS_STATS)
 		return;
 
 	/* for ge/xge node info */
-	buff = hns_dsaf_get_node_stats_strings(buff, node, dsaf_dev);
+	hns_dsaf_get_node_stats_strings(data, node, dsaf_dev);
 
 	/* for ppe node info */
 	node = port + DSAF_PPE_INODE_BASE;
-	(void)hns_dsaf_get_node_stats_strings(buff, node, dsaf_dev);
+	hns_dsaf_get_node_stats_strings(data, node, dsaf_dev);
 }
 
 /**
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
index 5526a10caac5..0eb03dff1a8b 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
@@ -442,7 +442,7 @@ void hns_dsaf_update_stats(struct dsaf_device *dsaf_dev, u32 inode_num);
 
 int hns_dsaf_get_sset_count(struct dsaf_device *dsaf_dev, int stringset);
 void hns_dsaf_get_stats(struct dsaf_device *ddev, u64 *data, int port);
-void hns_dsaf_get_strings(int stringset, u8 *data, int port,
+void hns_dsaf_get_strings(int stringset, u8 **data, int port,
 			  struct dsaf_device *dsaf_dev);
 
 void hns_dsaf_get_regs(struct dsaf_device *ddev, u32 port, void *data);
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c
index a08d1f0a5a16..5013beb4d282 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c
@@ -457,24 +457,23 @@ int hns_ppe_get_regs_count(void)
  * @stringset: string set type
  * @data: output string
  */
-void hns_ppe_get_strings(struct hns_ppe_cb *ppe_cb, int stringset, u8 *data)
+void hns_ppe_get_strings(struct hns_ppe_cb *ppe_cb, int stringset, u8 **data)
 {
 	int index = ppe_cb->index;
-	u8 *buff = data;
-
-	ethtool_sprintf(&buff, "ppe%d_rx_sw_pkt", index);
-	ethtool_sprintf(&buff, "ppe%d_rx_pkt_ok", index);
-	ethtool_sprintf(&buff, "ppe%d_rx_drop_pkt_no_bd", index);
-	ethtool_sprintf(&buff, "ppe%d_rx_alloc_buf_fail", index);
-	ethtool_sprintf(&buff, "ppe%d_rx_alloc_buf_wait", index);
-	ethtool_sprintf(&buff, "ppe%d_rx_pkt_drop_no_buf", index);
-	ethtool_sprintf(&buff, "ppe%d_rx_pkt_err_fifo_full", index);
-
-	ethtool_sprintf(&buff, "ppe%d_tx_bd", index);
-	ethtool_sprintf(&buff, "ppe%d_tx_pkt", index);
-	ethtool_sprintf(&buff, "ppe%d_tx_pkt_ok", index);
-	ethtool_sprintf(&buff, "ppe%d_tx_pkt_err_fifo_empty", index);
-	ethtool_sprintf(&buff, "ppe%d_tx_pkt_err_csum_fail", index);
+
+	ethtool_sprintf(data, "ppe%d_rx_sw_pkt", index);
+	ethtool_sprintf(data, "ppe%d_rx_pkt_ok", index);
+	ethtool_sprintf(data, "ppe%d_rx_drop_pkt_no_bd", index);
+	ethtool_sprintf(data, "ppe%d_rx_alloc_buf_fail", index);
+	ethtool_sprintf(data, "ppe%d_rx_alloc_buf_wait", index);
+	ethtool_sprintf(data, "ppe%d_rx_pkt_drop_no_buf", index);
+	ethtool_sprintf(data, "ppe%d_rx_pkt_err_fifo_full", index);
+
+	ethtool_sprintf(data, "ppe%d_tx_bd", index);
+	ethtool_sprintf(data, "ppe%d_tx_pkt", index);
+	ethtool_sprintf(data, "ppe%d_tx_pkt_ok", index);
+	ethtool_sprintf(data, "ppe%d_tx_pkt_err_fifo_empty", index);
+	ethtool_sprintf(data, "ppe%d_tx_pkt_err_csum_fail", index);
 }
 
 void hns_ppe_get_stats(struct hns_ppe_cb *ppe_cb, u64 *data)
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.h
index 7e00231c1acf..602c8e971fe4 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.h
@@ -109,7 +109,7 @@ int hns_ppe_get_sset_count(int stringset);
 int hns_ppe_get_regs_count(void);
 void hns_ppe_get_regs(struct hns_ppe_cb *ppe_cb, void *data);
 
-void hns_ppe_get_strings(struct hns_ppe_cb *ppe_cb, int stringset, u8 *data);
+void hns_ppe_get_strings(struct hns_ppe_cb *ppe_cb, int stringset, u8 **data);
 void hns_ppe_get_stats(struct hns_ppe_cb *ppe_cb, u64 *data);
 void hns_ppe_set_tso_enable(struct hns_ppe_cb *ppe_cb, u32 value);
 void hns_ppe_set_rss_key(struct hns_ppe_cb *ppe_cb,
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c
index 93344563a259..46af467aa596 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c
@@ -923,44 +923,42 @@ int hns_rcb_get_ring_regs_count(void)
  *@data:strings name value
  *@index:queue index
  */
-void hns_rcb_get_strings(int stringset, u8 *data, int index)
+void hns_rcb_get_strings(int stringset, u8 **data, int index)
 {
-	u8 *buff = data;
-
 	if (stringset != ETH_SS_STATS)
 		return;
 
-	ethtool_sprintf(&buff, "tx_ring%d_rcb_pkt_num", index);
-	ethtool_sprintf(&buff, "tx_ring%d_ppe_tx_pkt_num", index);
-	ethtool_sprintf(&buff, "tx_ring%d_ppe_drop_pkt_num", index);
-	ethtool_sprintf(&buff, "tx_ring%d_fbd_num", index);
-
-	ethtool_sprintf(&buff, "tx_ring%d_pkt_num", index);
-	ethtool_sprintf(&buff, "tx_ring%d_bytes", index);
-	ethtool_sprintf(&buff, "tx_ring%d_err_cnt", index);
-	ethtool_sprintf(&buff, "tx_ring%d_io_err", index);
-	ethtool_sprintf(&buff, "tx_ring%d_sw_err", index);
-	ethtool_sprintf(&buff, "tx_ring%d_seg_pkt", index);
-	ethtool_sprintf(&buff, "tx_ring%d_restart_queue", index);
-	ethtool_sprintf(&buff, "tx_ring%d_tx_busy", index);
-
-	ethtool_sprintf(&buff, "rx_ring%d_rcb_pkt_num", index);
-	ethtool_sprintf(&buff, "rx_ring%d_ppe_pkt_num", index);
-	ethtool_sprintf(&buff, "rx_ring%d_ppe_drop_pkt_num", index);
-	ethtool_sprintf(&buff, "rx_ring%d_fbd_num", index);
-
-	ethtool_sprintf(&buff, "rx_ring%d_pkt_num", index);
-	ethtool_sprintf(&buff, "rx_ring%d_bytes", index);
-	ethtool_sprintf(&buff, "rx_ring%d_err_cnt", index);
-	ethtool_sprintf(&buff, "rx_ring%d_io_err", index);
-	ethtool_sprintf(&buff, "rx_ring%d_sw_err", index);
-	ethtool_sprintf(&buff, "rx_ring%d_seg_pkt", index);
-	ethtool_sprintf(&buff, "rx_ring%d_reuse_pg", index);
-	ethtool_sprintf(&buff, "rx_ring%d_len_err", index);
-	ethtool_sprintf(&buff, "rx_ring%d_non_vld_desc_err", index);
-	ethtool_sprintf(&buff, "rx_ring%d_bd_num_err", index);
-	ethtool_sprintf(&buff, "rx_ring%d_l2_err", index);
-	ethtool_sprintf(&buff, "rx_ring%d_l3l4csum_err", index);
+	ethtool_sprintf(data, "tx_ring%d_rcb_pkt_num", index);
+	ethtool_sprintf(data, "tx_ring%d_ppe_tx_pkt_num", index);
+	ethtool_sprintf(data, "tx_ring%d_ppe_drop_pkt_num", index);
+	ethtool_sprintf(data, "tx_ring%d_fbd_num", index);
+
+	ethtool_sprintf(data, "tx_ring%d_pkt_num", index);
+	ethtool_sprintf(data, "tx_ring%d_bytes", index);
+	ethtool_sprintf(data, "tx_ring%d_err_cnt", index);
+	ethtool_sprintf(data, "tx_ring%d_io_err", index);
+	ethtool_sprintf(data, "tx_ring%d_sw_err", index);
+	ethtool_sprintf(data, "tx_ring%d_seg_pkt", index);
+	ethtool_sprintf(data, "tx_ring%d_restart_queue", index);
+	ethtool_sprintf(data, "tx_ring%d_tx_busy", index);
+
+	ethtool_sprintf(data, "rx_ring%d_rcb_pkt_num", index);
+	ethtool_sprintf(data, "rx_ring%d_ppe_pkt_num", index);
+	ethtool_sprintf(data, "rx_ring%d_ppe_drop_pkt_num", index);
+	ethtool_sprintf(data, "rx_ring%d_fbd_num", index);
+
+	ethtool_sprintf(data, "rx_ring%d_pkt_num", index);
+	ethtool_sprintf(data, "rx_ring%d_bytes", index);
+	ethtool_sprintf(data, "rx_ring%d_err_cnt", index);
+	ethtool_sprintf(data, "rx_ring%d_io_err", index);
+	ethtool_sprintf(data, "rx_ring%d_sw_err", index);
+	ethtool_sprintf(data, "rx_ring%d_seg_pkt", index);
+	ethtool_sprintf(data, "rx_ring%d_reuse_pg", index);
+	ethtool_sprintf(data, "rx_ring%d_len_err", index);
+	ethtool_sprintf(data, "rx_ring%d_non_vld_desc_err", index);
+	ethtool_sprintf(data, "rx_ring%d_bd_num_err", index);
+	ethtool_sprintf(data, "rx_ring%d_l2_err", index);
+	ethtool_sprintf(data, "rx_ring%d_l3l4csum_err", index);
 }
 
 void hns_rcb_get_common_regs(struct rcb_common_cb *rcb_com, void *data)
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h
index c1e9b6997853..0f4cc184ef39 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h
@@ -157,7 +157,7 @@ int hns_rcb_get_ring_regs_count(void);
 
 void hns_rcb_get_ring_regs(struct hnae_queue *queue, void *data);
 
-void hns_rcb_get_strings(int stringset, u8 *data, int index);
+void hns_rcb_get_strings(int stringset, u8 **data, int index);
 void hns_rcb_set_rx_ring_bs(struct hnae_queue *q, u32 buf_size);
 void hns_rcb_set_tx_ring_bs(struct hnae_queue *q, u32 buf_size);
 
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_xgmac.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_xgmac.c
index c58833eb4830..dbc44c2c26c2 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_xgmac.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_xgmac.c
@@ -743,16 +743,15 @@ static void hns_xgmac_get_stats(void *mac_drv, u64 *data)
  *@stringset: type of values in data
  *@data:data for value of string name
  */
-static void hns_xgmac_get_strings(u32 stringset, u8 *data)
+static void hns_xgmac_get_strings(u32 stringset, u8 **data)
 {
-	u8 *buff = data;
 	u32 i;
 
 	if (stringset != ETH_SS_STATS)
 		return;
 
 	for (i = 0; i < ARRAY_SIZE(g_xgmac_stats_string); i++)
-		ethtool_puts(&buff, g_xgmac_stats_string[i].desc);
+		ethtool_puts(data, g_xgmac_stats_string[i].desc);
 }
 
 /**
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
index a5bb306b2cf1..6c458f037262 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
@@ -903,7 +903,6 @@ static void hns_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
 {
 	struct hns_nic_priv *priv = netdev_priv(netdev);
 	struct hnae_handle *h = priv->ae_handle;
-	u8 *buff = data;
 
 	if (!h->dev->ops->get_strings) {
 		netdev_err(netdev, "h->dev->ops->get_strings is null!\n");
@@ -912,43 +911,43 @@ static void hns_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
 
 	if (stringset == ETH_SS_TEST) {
 		if (priv->ae_handle->phy_if != PHY_INTERFACE_MODE_XGMII)
-			ethtool_puts(&buff,
+			ethtool_puts(&data,
 				     hns_nic_test_strs[MAC_INTERNALLOOP_MAC]);
-		ethtool_puts(&buff, hns_nic_test_strs[MAC_INTERNALLOOP_SERDES]);
+		ethtool_puts(&data, hns_nic_test_strs[MAC_INTERNALLOOP_SERDES]);
 		if ((netdev->phydev) && (!netdev->phydev->is_c45))
-			ethtool_puts(&buff,
+			ethtool_puts(&data,
 				     hns_nic_test_strs[MAC_INTERNALLOOP_PHY]);
 
 	} else {
-		ethtool_puts(&buff, "rx_packets");
-		ethtool_puts(&buff, "tx_packets");
-		ethtool_puts(&buff, "rx_bytes");
-		ethtool_puts(&buff, "tx_bytes");
-		ethtool_puts(&buff, "rx_errors");
-		ethtool_puts(&buff, "tx_errors");
-		ethtool_puts(&buff, "rx_dropped");
-		ethtool_puts(&buff, "tx_dropped");
-		ethtool_puts(&buff, "multicast");
-		ethtool_puts(&buff, "collisions");
-		ethtool_puts(&buff, "rx_over_errors");
-		ethtool_puts(&buff, "rx_crc_errors");
-		ethtool_puts(&buff, "rx_frame_errors");
-		ethtool_puts(&buff, "rx_fifo_errors");
-		ethtool_puts(&buff, "rx_missed_errors");
-		ethtool_puts(&buff, "tx_aborted_errors");
-		ethtool_puts(&buff, "tx_carrier_errors");
-		ethtool_puts(&buff, "tx_fifo_errors");
-		ethtool_puts(&buff, "tx_heartbeat_errors");
-		ethtool_puts(&buff, "rx_length_errors");
-		ethtool_puts(&buff, "tx_window_errors");
-		ethtool_puts(&buff, "rx_compressed");
-		ethtool_puts(&buff, "tx_compressed");
-		ethtool_puts(&buff, "netdev_rx_dropped");
-		ethtool_puts(&buff, "netdev_tx_dropped");
-
-		ethtool_puts(&buff, "netdev_tx_timeout");
-
-		h->dev->ops->get_strings(h, stringset, buff);
+		ethtool_puts(&data, "rx_packets");
+		ethtool_puts(&data, "tx_packets");
+		ethtool_puts(&data, "rx_bytes");
+		ethtool_puts(&data, "tx_bytes");
+		ethtool_puts(&data, "rx_errors");
+		ethtool_puts(&data, "tx_errors");
+		ethtool_puts(&data, "rx_dropped");
+		ethtool_puts(&data, "tx_dropped");
+		ethtool_puts(&data, "multicast");
+		ethtool_puts(&data, "collisions");
+		ethtool_puts(&data, "rx_over_errors");
+		ethtool_puts(&data, "rx_crc_errors");
+		ethtool_puts(&data, "rx_frame_errors");
+		ethtool_puts(&data, "rx_fifo_errors");
+		ethtool_puts(&data, "rx_missed_errors");
+		ethtool_puts(&data, "tx_aborted_errors");
+		ethtool_puts(&data, "tx_carrier_errors");
+		ethtool_puts(&data, "tx_fifo_errors");
+		ethtool_puts(&data, "tx_heartbeat_errors");
+		ethtool_puts(&data, "rx_length_errors");
+		ethtool_puts(&data, "tx_window_errors");
+		ethtool_puts(&data, "rx_compressed");
+		ethtool_puts(&data, "tx_compressed");
+		ethtool_puts(&data, "netdev_rx_dropped");
+		ethtool_puts(&data, "netdev_tx_dropped");
+
+		ethtool_puts(&data, "netdev_tx_timeout");
+
+		h->dev->ops->get_strings(h, stringset, &data);
 	}
 }
 
@@ -970,7 +969,7 @@ static int hns_get_sset_count(struct net_device *netdev, int stringset)
 		return -EOPNOTSUPP;
 	}
 	if (stringset == ETH_SS_TEST) {
-		u32 cnt = (sizeof(hns_nic_test_strs) / ETH_GSTRING_LEN);
+		u32 cnt = ARRAY_SIZE(hns_nic_test_strs);
 
 		if (priv->ae_handle->phy_if == PHY_INTERFACE_MODE_XGMII)
 			cnt--;