bnxt: implement ethtool::get_fec_stats

Report corrected bits.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c

@@ -1930,6 +1930,20 @@ static int bnxt_get_fecparam(struct net_device *dev,
 	return 0;
 }
 
+static void bnxt_get_fec_stats(struct net_device *dev,
+			       struct ethtool_fec_stats *fec_stats)
+{
+	struct bnxt *bp = netdev_priv(dev);
+	u64 *rx;
+
+	if (BNXT_VF(bp) || !(bp->flags & BNXT_FLAG_PORT_STATS_EXT))
+		return;
+
+	rx = bp->rx_port_stats_ext.sw_stats;
+	fec_stats->corrected_bits.total =
+		*(rx + BNXT_RX_STATS_EXT_OFFSET(rx_corrected_bits));
+}
+
 static u32 bnxt_ethtool_forced_fec_to_fw(struct bnxt_link_info *link_info,
 					 u32 fec)
 {
@@ -3991,6 +4005,7 @@ const struct ethtool_ops bnxt_ethtool_ops = {
 				     ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
 	.get_link_ksettings	= bnxt_get_link_ksettings,
 	.set_link_ksettings	= bnxt_set_link_ksettings,
+	.get_fec_stats		= bnxt_get_fec_stats,
 	.get_fecparam		= bnxt_get_fecparam,
 	.set_fecparam		= bnxt_set_fecparam,
 	.get_pause_stats	= bnxt_get_pause_stats,