hisilicon: Update drivers to use ethtool_sprintf

Update the hisilicon drivers to make use of ethtool_sprintf. The general
idea is to reduce code size and overhead by replacing the repeated pattern
of string printf statements and ETH_STRING_LEN counter increments.
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c

@@ -687,17 +687,14 @@ static void hns_gmac_get_stats(void *mac_drv, u64 *data)
 
 static void hns_gmac_get_strings(u32 stringset, u8 *data)
 {
-	char *buff = (char *)data;
+	u8 *buff = data;
 	u32 i;
 
 	if (stringset != ETH_SS_STATS)
 		return;
 
-	for (i = 0; i < ARRAY_SIZE(g_gmac_stats_string); i++) {
-		snprintf(buff, ETH_GSTRING_LEN, "%s",
-			 g_gmac_stats_string[i].desc);
-		buff = buff + ETH_GSTRING_LEN;
-	}
+	for (i = 0; i < ARRAY_SIZE(g_gmac_stats_string); i++)
+		ethtool_sprintf(&buff, g_gmac_stats_string[i].desc);
 }
 
 static int hns_gmac_get_sset_count(int stringset)

drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c

@@ -462,33 +462,22 @@ int hns_ppe_get_regs_count(void)
  */
 void hns_ppe_get_strings(struct hns_ppe_cb *ppe_cb, int stringset, u8 *data)
 {
-	char *buff = (char *)data;
 	int index = ppe_cb->index;
-
-	snprintf(buff, ETH_GSTRING_LEN, "ppe%d_rx_sw_pkt", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "ppe%d_rx_pkt_ok", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "ppe%d_rx_drop_pkt_no_bd", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "ppe%d_rx_alloc_buf_fail", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "ppe%d_rx_alloc_buf_wait", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "ppe%d_rx_pkt_drop_no_buf", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "ppe%d_rx_pkt_err_fifo_full", index);
-	buff = buff + ETH_GSTRING_LEN;
-
-	snprintf(buff, ETH_GSTRING_LEN, "ppe%d_tx_bd", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "ppe%d_tx_pkt", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "ppe%d_tx_pkt_ok", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "ppe%d_tx_pkt_err_fifo_empty", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "ppe%d_tx_pkt_err_csum_fail", 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);
 }
 
 void hns_ppe_get_stats(struct hns_ppe_cb *ppe_cb, u64 *data)

drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c

@@ -929,69 +929,42 @@ int hns_rcb_get_ring_regs_count(void)
  */
 void hns_rcb_get_strings(int stringset, u8 *data, int index)
 {
-	char *buff = (char *)data;
+	u8 *buff = data;
 
 	if (stringset != ETH_SS_STATS)
 		return;
 
-	snprintf(buff, ETH_GSTRING_LEN, "tx_ring%d_rcb_pkt_num", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "tx_ring%d_ppe_tx_pkt_num", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "tx_ring%d_ppe_drop_pkt_num", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "tx_ring%d_fbd_num", index);
-	buff = buff + ETH_GSTRING_LEN;
-
-	snprintf(buff, ETH_GSTRING_LEN, "tx_ring%d_pkt_num", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "tx_ring%d_bytes", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "tx_ring%d_err_cnt", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "tx_ring%d_io_err", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "tx_ring%d_sw_err", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "tx_ring%d_seg_pkt", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "tx_ring%d_restart_queue", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "tx_ring%d_tx_busy", index);
-	buff = buff + ETH_GSTRING_LEN;
-
-	snprintf(buff, ETH_GSTRING_LEN, "rx_ring%d_rcb_pkt_num", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "rx_ring%d_ppe_pkt_num", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "rx_ring%d_ppe_drop_pkt_num", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "rx_ring%d_fbd_num", index);
-	buff = buff + ETH_GSTRING_LEN;
-
-	snprintf(buff, ETH_GSTRING_LEN, "rx_ring%d_pkt_num", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "rx_ring%d_bytes", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "rx_ring%d_err_cnt", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "rx_ring%d_io_err", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "rx_ring%d_sw_err", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "rx_ring%d_seg_pkt", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "rx_ring%d_reuse_pg", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "rx_ring%d_len_err", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "rx_ring%d_non_vld_desc_err", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "rx_ring%d_bd_num_err", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "rx_ring%d_l2_err", index);
-	buff = buff + ETH_GSTRING_LEN;
-	snprintf(buff, ETH_GSTRING_LEN, "rx_ring%d_l3l4csum_err", index);
+	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);
 }
 
 void hns_rcb_get_common_regs(struct rcb_common_cb *rcb_com, void *data)

drivers/net/ethernet/hisilicon/hns/hns_dsaf_xgmac.c

@@ -758,16 +758,14 @@ static void hns_xgmac_get_stats(void *mac_drv, u64 *data)
  */
 static void hns_xgmac_get_strings(u32 stringset, u8 *data)
 {
-	char *buff = (char *)data;
+	u8 *buff = data;
 	u32 i;
 
 	if (stringset != ETH_SS_STATS)
 		return;
 
-	for (i = 0; i < ARRAY_SIZE(g_xgmac_stats_string); i++) {
-		snprintf(buff, ETH_GSTRING_LEN, g_xgmac_stats_string[i].desc);
-		buff = buff + ETH_GSTRING_LEN;
-	}
+	for (i = 0; i < ARRAY_SIZE(g_xgmac_stats_string); i++)
+		ethtool_sprintf(&buff, g_xgmac_stats_string[i].desc);
 }
 
 /**

drivers/net/ethernet/hisilicon/hns/hns_ethtool.c

@@ -895,7 +895,7 @@ 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;
-	char *buff = (char *)data;
+	u8 *buff = data;
 
 	if (!h->dev->ops->get_strings) {
 		netdev_err(netdev, "h->dev->ops->get_strings is null!\n");
@@ -903,74 +903,45 @@ 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) {
-			memcpy(buff, hns_nic_test_strs[MAC_INTERNALLOOP_MAC],
-			       ETH_GSTRING_LEN);
-			buff += ETH_GSTRING_LEN;
-		}
-		memcpy(buff, hns_nic_test_strs[MAC_INTERNALLOOP_SERDES],
-		       ETH_GSTRING_LEN);
-		buff += ETH_GSTRING_LEN;
+		if (priv->ae_handle->phy_if != PHY_INTERFACE_MODE_XGMII)
+			ethtool_sprintf(&buff,
+					hns_nic_test_strs[MAC_INTERNALLOOP_MAC]);
+		ethtool_sprintf(&buff,
+				hns_nic_test_strs[MAC_INTERNALLOOP_SERDES]);
 		if ((netdev->phydev) && (!netdev->phydev->is_c45))
-			memcpy(buff, hns_nic_test_strs[MAC_INTERNALLOOP_PHY],
-			       ETH_GSTRING_LEN);
+			ethtool_sprintf(&buff,
+					hns_nic_test_strs[MAC_INTERNALLOOP_PHY]);
 
 	} else {
-		snprintf(buff, ETH_GSTRING_LEN, "rx_packets");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "tx_packets");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "rx_bytes");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "tx_bytes");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "rx_errors");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "tx_errors");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "rx_dropped");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "tx_dropped");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "multicast");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "collisions");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "rx_over_errors");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "rx_crc_errors");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "rx_frame_errors");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "rx_fifo_errors");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "rx_missed_errors");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "tx_aborted_errors");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "tx_carrier_errors");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "tx_fifo_errors");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "tx_heartbeat_errors");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "rx_length_errors");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "tx_window_errors");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "rx_compressed");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "tx_compressed");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "netdev_rx_dropped");
-		buff = buff + ETH_GSTRING_LEN;
-		snprintf(buff, ETH_GSTRING_LEN, "netdev_tx_dropped");
-		buff = buff + ETH_GSTRING_LEN;
-
-		snprintf(buff, ETH_GSTRING_LEN, "netdev_tx_timeout");
-		buff = buff + ETH_GSTRING_LEN;
-
-		h->dev->ops->get_strings(h, stringset, (u8 *)buff);
+		ethtool_sprintf(&buff, "rx_packets");
+		ethtool_sprintf(&buff, "tx_packets");
+		ethtool_sprintf(&buff, "rx_bytes");
+		ethtool_sprintf(&buff, "tx_bytes");
+		ethtool_sprintf(&buff, "rx_errors");
+		ethtool_sprintf(&buff, "tx_errors");
+		ethtool_sprintf(&buff, "rx_dropped");
+		ethtool_sprintf(&buff, "tx_dropped");
+		ethtool_sprintf(&buff, "multicast");
+		ethtool_sprintf(&buff, "collisions");
+		ethtool_sprintf(&buff, "rx_over_errors");
+		ethtool_sprintf(&buff, "rx_crc_errors");
+		ethtool_sprintf(&buff, "rx_frame_errors");
+		ethtool_sprintf(&buff, "rx_fifo_errors");
+		ethtool_sprintf(&buff, "rx_missed_errors");
+		ethtool_sprintf(&buff, "tx_aborted_errors");
+		ethtool_sprintf(&buff, "tx_carrier_errors");
+		ethtool_sprintf(&buff, "tx_fifo_errors");
+		ethtool_sprintf(&buff, "tx_heartbeat_errors");
+		ethtool_sprintf(&buff, "rx_length_errors");
+		ethtool_sprintf(&buff, "tx_window_errors");
+		ethtool_sprintf(&buff, "rx_compressed");
+		ethtool_sprintf(&buff, "tx_compressed");
+		ethtool_sprintf(&buff, "netdev_rx_dropped");
+		ethtool_sprintf(&buff, "netdev_tx_dropped");
+
+		ethtool_sprintf(&buff, "netdev_tx_timeout");
+
+		h->dev->ops->get_strings(h, stringset, buff);
 	}
 }