netdev - [PATCH net-next 1/5] igc: Update driver to use ethtool

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Date:   Fri,  4 Jun 2021 09:24:17 -0700
From:   Tony Nguyen <anthony.l.nguyen@...el.com>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     Sasha Neftin <sasha.neftin@...el.com>, netdev@...r.kernel.org,
        sassmann@...hat.com, anthony.l.nguyen@...el.com,
        vitaly.lifshits@...el.com, Alexander Duyck <alexanderduyck@...com>,
        Dvora Fuxbrumer <dvorax.fuxbrumer@...ux.intel.com>
Subject: [PATCH net-next 1/5] igc: Update driver to use ethtool_sprintf

From: Sasha Neftin <sasha.neftin@...el.com>

Complete to commit c8d4725e985d ("intel: Update drivers to use
ethtool_sprintf")
Update the igc driver 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.

Suggested-by: Alexander Duyck <alexanderduyck@...com>
Signed-off-by: Sasha Neftin <sasha.neftin@...el.com>
Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@...ux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/igc/igc_ethtool.c | 39 +++++++-------------
 1 file changed, 13 insertions(+), 26 deletions(-)

diff --git a/drivers/net/ethernet/intel/igc/igc_ethtool.c b/drivers/net/ethernet/intel/igc/igc_ethtool.c
index 2cb12431c371..fa4171860623 100644
--- a/drivers/net/ethernet/intel/igc/igc_ethtool.c
+++ b/drivers/net/ethernet/intel/igc/igc_ethtool.c
@@ -765,35 +765,22 @@ static void igc_ethtool_get_strings(struct net_device *netdev, u32 stringset,
 		       IGC_TEST_LEN * ETH_GSTRING_LEN);
 		break;
 	case ETH_SS_STATS:
-		for (i = 0; i < IGC_GLOBAL_STATS_LEN; i++) {
-			memcpy(p, igc_gstrings_stats[i].stat_string,
-			       ETH_GSTRING_LEN);
-			p += ETH_GSTRING_LEN;
-		}
-		for (i = 0; i < IGC_NETDEV_STATS_LEN; i++) {
-			memcpy(p, igc_gstrings_net_stats[i].stat_string,
-			       ETH_GSTRING_LEN);
-			p += ETH_GSTRING_LEN;
-		}
+		for (i = 0; i < IGC_GLOBAL_STATS_LEN; i++)
+			ethtool_sprintf(&p, igc_gstrings_stats[i].stat_string);
+		for (i = 0; i < IGC_NETDEV_STATS_LEN; i++)
+			ethtool_sprintf(&p,
+					igc_gstrings_net_stats[i].stat_string);
 		for (i = 0; i < adapter->num_tx_queues; i++) {
-			sprintf(p, "tx_queue_%u_packets", i);
-			p += ETH_GSTRING_LEN;
-			sprintf(p, "tx_queue_%u_bytes", i);
-			p += ETH_GSTRING_LEN;
-			sprintf(p, "tx_queue_%u_restart", i);
-			p += ETH_GSTRING_LEN;
+			ethtool_sprintf(&p, "tx_queue_%u_packets", i);
+			ethtool_sprintf(&p, "tx_queue_%u_bytes", i);
+			ethtool_sprintf(&p, "tx_queue_%u_restart", i);
 		}
 		for (i = 0; i < adapter->num_rx_queues; i++) {
-			sprintf(p, "rx_queue_%u_packets", i);
-			p += ETH_GSTRING_LEN;
-			sprintf(p, "rx_queue_%u_bytes", i);
-			p += ETH_GSTRING_LEN;
-			sprintf(p, "rx_queue_%u_drops", i);
-			p += ETH_GSTRING_LEN;
-			sprintf(p, "rx_queue_%u_csum_err", i);
-			p += ETH_GSTRING_LEN;
-			sprintf(p, "rx_queue_%u_alloc_failed", i);
-			p += ETH_GSTRING_LEN;
+			ethtool_sprintf(&p, "rx_queue_%u_packets", i);
+			ethtool_sprintf(&p, "rx_queue_%u_bytes", i);
+			ethtool_sprintf(&p, "rx_queue_%u_drops", i);
+			ethtool_sprintf(&p, "rx_queue_%u_csum_err", i);
+			ethtool_sprintf(&p, "rx_queue_%u_alloc_failed", i);
 		}
 		/* BUG_ON(p - data != IGC_STATS_LEN * ETH_GSTRING_LEN); */
 		break;
-- 
2.26.2