linux-kernel - [PATCH v5 3/3] net: fec: add page pool statistics

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Date:   Tue, 15 Nov 2022 14:49:51 -0600
From:   Shenwei Wang <shenwei.wang@....com>
To:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     Jesper Dangaard Brouer <hawk@...nel.org>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        John Fastabend <john.fastabend@...il.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        imx@...ts.linux.dev, Shenwei Wang <shenwei.wang@....com>
Subject: [PATCH v5 3/3] net: fec: add page pool statistics

add page pool statistics to ethtool stats.

Signed-off-by: Shenwei Wang <shenwei.wang@....com>
---
 drivers/net/ethernet/freescale/fec_main.c | 24 ++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index bb2157022022..ae905ea1ab7d 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -2755,6 +2755,24 @@ static void fec_enet_get_xdp_stats(struct fec_enet_private *fep, u64 *data)
 	memcpy(data, xdp_stats, sizeof(xdp_stats));
 }
 
+static void fec_enet_page_pool_stats(struct fec_enet_private *fep, u64 *data)
+{
+	struct page_pool_stats stats = {};
+	struct fec_enet_priv_rx_q *rxq;
+	int i;
+
+	for (i = fep->num_rx_queues - 1; i >= 0; i--) {
+		rxq = fep->rx_queue[i];
+
+		if (!rxq->page_pool)
+			continue;
+
+		page_pool_get_stats(rxq->page_pool, &stats);
+	}
+
+	page_pool_ethtool_stats_get(data, &stats);
+}
+
 static void fec_enet_get_ethtool_stats(struct net_device *dev,
 				       struct ethtool_stats *stats, u64 *data)
 {
@@ -2768,6 +2786,8 @@ static void fec_enet_get_ethtool_stats(struct net_device *dev,
 
 	fec_enet_get_xdp_stats(fep, data);
 	data += XDP_STATS_TOTAL;
+
+	fec_enet_page_pool_stats(fep, data);
 }
 
 static void fec_enet_get_strings(struct net_device *netdev,
@@ -2784,6 +2804,7 @@ static void fec_enet_get_strings(struct net_device *netdev,
 			strscpy(data, fec_xdp_stat_strs[i], ETH_GSTRING_LEN);
 			data += ETH_GSTRING_LEN;
 		}
+		page_pool_ethtool_stats_get_strings(data);
 		break;
 	case ETH_SS_TEST:
 		net_selftest_get_strings(data);
@@ -2795,7 +2816,8 @@ static int fec_enet_get_sset_count(struct net_device *dev, int sset)
 {
 	switch (sset) {
 	case ETH_SS_STATS:
-		return (ARRAY_SIZE(fec_stats) + XDP_STATS_TOTAL);
+		return (ARRAY_SIZE(fec_stats) + XDP_STATS_TOTAL
+				+ page_pool_ethtool_stats_get_count());
 	case ETH_SS_TEST:
 		return net_selftest_get_count();
 	default:
-- 
2.34.1