linux-kernel - [PATCH net-next 07/21] ethernet, ena: convert to standard XDP stats

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Date:   Tue,  3 Aug 2021 18:36:27 +0200
From:   Alexander Lobakin <alexandr.lobakin@...el.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Alexander Lobakin <alexandr.lobakin@...el.com>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Lukasz Czapnik <lukasz.czapnik@...el.com>,
        Marcin Kubiak <marcin.kubiak@...el.com>,
        Michal Kubiak <michal.kubiak@...el.com>,
        Michal Swiatkowski <michal.swiatkowski@...el.com>,
        Jonathan Corbet <corbet@....net>,
        Netanel Belgazal <netanel@...zon.com>,
        Arthur Kiyanovski <akiyano@...zon.com>,
        Guy Tzalik <gtzalik@...zon.com>,
        Saeed Bishara <saeedb@...zon.com>,
        Ioana Ciornei <ioana.ciornei@....com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Marcin Wojtas <mw@...ihalf.com>,
        Russell King <linux@...linux.org.uk>,
        Edward Cree <ecree.xilinx@...il.com>,
        Martin Habets <habetsm.xilinx@...il.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        KP Singh <kpsingh@...nel.org>,
        Shay Agroskin <shayagr@...zon.com>,
        Sameeh Jubran <sameehj@...zon.com>,
        Alexander Duyck <alexanderduyck@...com>,
        Danielle Ratson <danieller@...dia.com>,
        Ido Schimmel <idosch@...dia.com>, Andrew Lunn <andrew@...n.ch>,
        Vladyslav Tarasiuk <vladyslavt@...dia.com>,
        Arnd Bergmann <arnd@...db.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Jian Shen <shenjian15@...wei.com>,
        Petr Vorel <petr.vorel@...il.com>, Dan Murphy <dmurphy@...com>,
        Yangbo Lu <yangbo.lu@....com>,
        Michal Kubecek <mkubecek@...e.cz>,
        Zheng Yongjun <zhengyongjun3@...wei.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        YueHaibing <yuehaibing@...wei.com>,
        Johannes Berg <johannes@...solutions.net>,
        netdev@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, bpf@...r.kernel.org
Subject: [PATCH net-next 07/21] ethernet, ena: convert to standard XDP stats

Its 6 XDP per-channel counters align just fine with the standard
stats.
Drop them from the custom Ethtool statistics and expose to the
standard stats infra instead.

Signed-off-by: Alexander Lobakin <alexandr.lobakin@...el.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@...el.com>
---
 drivers/net/ethernet/amazon/ena/ena_ethtool.c | 46 ++++++++++++++++---
 1 file changed, 40 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/amazon/ena/ena_ethtool.c b/drivers/net/ethernet/amazon/ena/ena_ethtool.c
index 851a198cec82..1b6563641575 100644
--- a/drivers/net/ethernet/amazon/ena/ena_ethtool.c
+++ b/drivers/net/ethernet/amazon/ena/ena_ethtool.c
@@ -90,12 +90,6 @@ static const struct ena_stats ena_stats_rx_strings[] = {
 	ENA_STAT_RX_ENTRY(bad_req_id),
 	ENA_STAT_RX_ENTRY(empty_rx_ring),
 	ENA_STAT_RX_ENTRY(csum_unchecked),
-	ENA_STAT_RX_ENTRY(xdp_aborted),
-	ENA_STAT_RX_ENTRY(xdp_drop),
-	ENA_STAT_RX_ENTRY(xdp_pass),
-	ENA_STAT_RX_ENTRY(xdp_tx),
-	ENA_STAT_RX_ENTRY(xdp_invalid),
-	ENA_STAT_RX_ENTRY(xdp_redirect),
 };
 
 static const struct ena_stats ena_stats_ena_com_strings[] = {
@@ -324,6 +318,44 @@ static void ena_get_ethtool_strings(struct net_device *netdev,
 	}
 }
 
+static int ena_get_std_stats_channels(struct net_device *netdev, u32 sset)
+{
+	const struct ena_adapter *adapter = netdev_priv(netdev);
+
+	switch (sset) {
+	case ETH_SS_STATS_XDP:
+		return adapter->num_io_queues;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void ena_get_xdp_stats(struct net_device *netdev,
+			      struct ethtool_xdp_stats *xdp_stats)
+{
+	const struct ena_adapter *adapter = netdev_priv(netdev);
+	const struct u64_stats_sync *syncp;
+	const struct ena_stats_rx *stats;
+	struct ethtool_xdp_stats *iter;
+	u32 i;
+
+	for (i = 0; i < adapter->num_io_queues; i++) {
+		stats = &adapter->rx_ring[i].rx_stats;
+		syncp = &adapter->rx_ring[i].syncp;
+		iter = xdp_stats + i;
+
+		ena_safe_update_stat(&stats->xdp_drop, &iter->drop, syncp);
+		ena_safe_update_stat(&stats->xdp_pass, &iter->pass, syncp);
+		ena_safe_update_stat(&stats->xdp_tx, &iter->tx, syncp);
+		ena_safe_update_stat(&stats->xdp_redirect, &iter->redirect,
+				     syncp);
+		ena_safe_update_stat(&stats->xdp_aborted, &iter->aborted,
+				     syncp);
+		ena_safe_update_stat(&stats->xdp_invalid, &iter->invalid,
+				     syncp);
+	}
+}
+
 static int ena_get_link_ksettings(struct net_device *netdev,
 				  struct ethtool_link_ksettings *link_ksettings)
 {
@@ -916,6 +948,8 @@ static const struct ethtool_ops ena_ethtool_ops = {
 	.get_tunable		= ena_get_tunable,
 	.set_tunable		= ena_set_tunable,
 	.get_ts_info            = ethtool_op_get_ts_info,
+	.get_std_stats_channels	= ena_get_std_stats_channels,
+	.get_xdp_stats		= ena_get_xdp_stats,
 };
 
 void ena_set_ethtool_ops(struct net_device *netdev)
-- 
2.31.1