From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Tue, 12 Apr 2022 16:31:59 +0000 (+0200)
Subject: net: mvneta: add support for page_pool_get_stats
X-Git-Tag: for-5.19/block-exec-2022-06-02~49^2~316^2
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=b3fc79225f05;p=linux-block.git

net: mvneta: add support for page_pool_get_stats

Introduce support for the page_pool stats API into mvneta driver.
Report page_pool stats through ethtool.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/marvell/Kconfig b/drivers/net/ethernet/marvell/Kconfig
index 4cb55724001b..f58a1c0144ba 100644
--- a/drivers/net/ethernet/marvell/Kconfig
+++ b/drivers/net/ethernet/marvell/Kconfig
@@ -62,6 +62,7 @@ config MVNETA
 	select MVMDIO
 	select PHYLINK
 	select PAGE_POOL
+	select PAGE_POOL_STATS
 	help
 	  This driver supports the network interface units in the
 	  Marvell ARMADA XP, ARMADA 370, ARMADA 38x and
diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index 934f6dd90992..f6a54c7f0c69 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -4735,6 +4735,9 @@ static void mvneta_ethtool_get_strings(struct net_device *netdev, u32 sset,
 		for (i = 0; i < ARRAY_SIZE(mvneta_statistics); i++)
 			memcpy(data + i * ETH_GSTRING_LEN,
 			       mvneta_statistics[i].name, ETH_GSTRING_LEN);
+
+		data += ETH_GSTRING_LEN * ARRAY_SIZE(mvneta_statistics);
+		page_pool_ethtool_stats_get_strings(data);
 	}
 }
 
@@ -4847,6 +4850,17 @@ static void mvneta_ethtool_update_stats(struct mvneta_port *pp)
 	}
 }
 
+static void mvneta_ethtool_pp_stats(struct mvneta_port *pp, u64 *data)
+{
+	struct page_pool_stats stats = {};
+	int i;
+
+	for (i = 0; i < rxq_number; i++)
+		page_pool_get_stats(pp->rxqs[i].page_pool, &stats);
+
+	page_pool_ethtool_stats_get(data, &stats);
+}
+
 static void mvneta_ethtool_get_stats(struct net_device *dev,
 				     struct ethtool_stats *stats, u64 *data)
 {
@@ -4857,12 +4871,16 @@ static void mvneta_ethtool_get_stats(struct net_device *dev,
 
 	for (i = 0; i < ARRAY_SIZE(mvneta_statistics); i++)
 		*data++ = pp->ethtool_stats[i];
+
+	mvneta_ethtool_pp_stats(pp, data);
 }
 
 static int mvneta_ethtool_get_sset_count(struct net_device *dev, int sset)
 {
 	if (sset == ETH_SS_STATS)
-		return ARRAY_SIZE(mvneta_statistics);
+		return ARRAY_SIZE(mvneta_statistics) +
+		       page_pool_ethtool_stats_get_count();
+
 	return -EOPNOTSUPP;
 }