From: Alexander Lobakin <alexandr.lobakin@intel.com>
To: "David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>
Cc: Alexander Lobakin <alexandr.lobakin@intel.com>,
Jesse Brandeburg <jesse.brandeburg@intel.com>,
Lukasz Czapnik <lukasz.czapnik@intel.com>,
Marcin Kubiak <marcin.kubiak@intel.com>,
Michal Kubiak <michal.kubiak@intel.com>,
Michal Swiatkowski <michal.swiatkowski@intel.com>,
Jonathan Corbet <corbet@lwn.net>,
Netanel Belgazal <netanel@amazon.com>,
Arthur Kiyanovski <akiyano@amazon.com>,
Guy Tzalik <gtzalik@amazon.com>,
Saeed Bishara <saeedb@amazon.com>,
Ioana Ciornei <ioana.ciornei@nxp.com>,
Claudiu Manoil <claudiu.manoil@nxp.com>,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
Marcin Wojtas <mw@semihalf.com>,
Russell King <linux@armlinux.org.uk>,
Edward Cree <ecree.xilinx@gmail.com>,
Martin Habets <habetsm.xilinx@gmail.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Jesper Dangaard Brouer <hawk@kernel.org>,
John Fastabend <john.fastabend@gmail.com>,
Andrii Nakryiko <andrii@kernel.org>,
Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
Yonghong Song <yhs@fb.com>, KP Singh <kpsingh@kernel.org>,
Shay Agroskin <shayagr@amazon.com>,
Sameeh Jubran <sameehj@amazon.com>,
Alexander Duyck <alexanderduyck@fb.com>,
Danielle Ratson <danieller@nvidia.com>,
Ido Schimmel <idosch@nvidia.com>, Andrew Lunn <andrew@lunn.ch>,
Vladyslav Tarasiuk <vladyslavt@nvidia.com>,
Arnd Bergmann <arnd@arndb.de>,
Andrew Morton <akpm@linux-foundation.org>,
Jian Shen <shenjian15@huawei.com>,
Petr Vorel <petr.vorel@gmail.com>, Dan Murphy <dmurphy@ti.com>,
Yangbo Lu <yangbo.lu@nxp.com>, Michal Kubecek <mkubecek@suse.cz>,
Zheng Yongjun <zhengyongjun3@huawei.com>,
Heiner Kallweit <hkallweit1@gmail.com>,
YueHaibing <yuehaibing@huawei.com>,
Johannes Berg <johannes@sipsolutions.net>,
netdev@vger.kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org, bpf@vger.kernel.org
Subject: [PATCH net-next 19/21] virtio-net: don't mix error-caused drops with XDP_DROP cases
Date: Tue, 3 Aug 2021 18:42:17 +0200 [thread overview]
Message-ID: <20210803164217.4202-1-alexandr.lobakin@intel.com> (raw)
In-Reply-To: <20210803163641.3743-1-alexandr.lobakin@intel.com>
It's pretty confusing to have just one field for tracking both
XDP_DROP cases and various errors which lead to the frame being
dropped.
Add a new field, xdp_errors, to separate error paths, and leave
xdp_drops purely for counting frames with the XDP_DROP verdict.
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
---
drivers/net/virtio_net.c | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 8cbb4651ed75..acad099006cd 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -91,6 +91,7 @@ struct virtnet_rq_stats {
u64 xdp_tx;
u64 xdp_redirects;
u64 xdp_drops;
+ u64 xdp_errors;
u64 kicks;
};
@@ -113,6 +114,7 @@ static const struct virtnet_stat_desc virtnet_rq_stats_desc[] = {
{ "xdp_tx", VIRTNET_RQ_STAT(xdp_tx) },
{ "xdp_redirects", VIRTNET_RQ_STAT(xdp_redirects) },
{ "xdp_drops", VIRTNET_RQ_STAT(xdp_drops) },
+ { "xdp_errors", VIRTNET_RQ_STAT(xdp_errors) },
{ "kicks", VIRTNET_RQ_STAT(kicks) },
};
@@ -804,7 +806,8 @@ static struct sk_buff *receive_small(struct net_device *dev,
trace_xdp_exception(vi->dev, xdp_prog, act);
goto err_xdp;
case XDP_DROP:
- goto err_xdp;
+ stats->xdp_drops++;
+ goto xdp_drop;
}
}
rcu_read_unlock();
@@ -828,8 +831,9 @@ static struct sk_buff *receive_small(struct net_device *dev,
return skb;
err_xdp:
+ stats->xdp_errors++;
+xdp_drop:
rcu_read_unlock();
- stats->xdp_drops++;
err_len:
stats->drops++;
put_page(page);
@@ -1012,7 +1016,12 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
case XDP_DROP:
if (unlikely(xdp_page != page))
__free_pages(xdp_page, 0);
- goto err_xdp;
+
+ if (unlikely(act != XDP_DROP))
+ goto err_xdp;
+
+ stats->xdp_drops++;
+ goto xdp_drop;
}
}
rcu_read_unlock();
@@ -1081,8 +1090,9 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
return head_skb;
err_xdp:
+ stats->xdp_errors++;
+xdp_drop:
rcu_read_unlock();
- stats->xdp_drops++;
err_skb:
put_page(page);
while (num_buf-- > 1) {
--
2.31.1
next prev parent reply other threads:[~2021-08-03 16:42 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-03 16:36 [PATCH net-next 00/21] ethtool, stats: introduce and use standard XDP stats Alexander Lobakin
2021-08-03 16:36 ` [PATCH net-next 01/21] ethtool, stats: use a shorthand pointer in stats_prepare_data() Alexander Lobakin
2021-08-03 16:36 ` [PATCH net-next 02/21] ethtool, stats: add compile-time checks for standard stats Alexander Lobakin
2021-08-03 16:36 ` [PATCH net-next 03/21] ethtool, stats: introduce standard XDP statistics Alexander Lobakin
2021-08-03 20:49 ` Jakub Kicinski
2021-08-03 23:57 ` Saeed Mahameed
2021-08-04 12:36 ` Jakub Kicinski
2021-08-04 15:53 ` Alexander Lobakin
2021-08-04 16:57 ` Jakub Kicinski
2021-08-05 11:18 ` Alexander Lobakin
2021-08-05 13:31 ` Jakub Kicinski
2021-08-04 16:17 ` David Ahern
2021-08-04 16:44 ` Jakub Kicinski
2021-08-04 17:28 ` David Ahern
2021-08-04 18:27 ` Saeed Mahameed
2021-08-05 0:43 ` David Ahern
2021-08-05 2:14 ` Saeed Mahameed
2021-08-12 12:19 ` Jesper Dangaard Brouer
2021-10-26 9:23 ` Alexander Lobakin
2021-11-05 16:44 ` Alexander Lobakin
2021-11-08 11:37 ` Toke Høiland-Jørgensen
2021-11-08 13:21 ` Alexander Lobakin
2021-11-08 18:09 ` Toke Høiland-Jørgensen
2021-08-03 16:36 ` [PATCH net-next 04/21] ethernet, dpaa2: simplify per-channel Ethtool stats counting Alexander Lobakin
2021-08-03 16:36 ` [PATCH net-next 05/21] ethernet, dpaa2: convert to standard XDP stats Alexander Lobakin
2021-08-03 16:36 ` [PATCH net-next 06/21] ethernet, ena: constify src and syncp args of ena_safe_update_stat() Alexander Lobakin
2021-08-03 16:36 ` [PATCH net-next 07/21] ethernet, ena: convert to standard XDP stats Alexander Lobakin
2021-08-04 13:04 ` Shay Agroskin
2021-08-04 15:24 ` Alexander Lobakin
2021-08-03 16:36 ` [PATCH net-next 08/21] ethernet, enetc: " Alexander Lobakin
2021-08-03 16:36 ` [PATCH net-next 09/21] ethernet, mvneta: rename xdp_xmit_err to xdp_xmit_drops Alexander Lobakin
2021-08-03 16:36 ` [PATCH net-next 10/21] ethernet, mvneta: convert to standard XDP stats Alexander Lobakin
2021-08-03 16:36 ` [PATCH net-next 11/21] ethernet, mvpp2: rename xdp_xmit_err to xdp_xmit_drops Alexander Lobakin
2021-08-03 16:36 ` [PATCH net-next 12/21] ethernet, mvpp2: convert to standard XDP stats Alexander Lobakin
2021-08-03 16:36 ` [PATCH net-next 13/21] ethernet, sfc: " Alexander Lobakin
2021-08-03 17:59 ` Edward Cree
2021-08-03 16:36 ` [PATCH net-next 14/21] veth: rename rx_drops to xdp_errors Alexander Lobakin
2021-08-03 16:36 ` [PATCH net-next 15/21] veth: rename xdp_xmit_errors to xdp_xmit_drops Alexander Lobakin
2021-08-03 16:36 ` [PATCH net-next 16/21] veth: rename drop xdp_ suffix from packets and bytes stats Alexander Lobakin
2021-08-03 16:36 ` [PATCH net-next 17/21] veth: convert to standard XDP stats Alexander Lobakin
2021-08-03 16:36 ` [PATCH net-next 18/21] virtio-net: rename xdp_tx{,__drops} SQ stats to xdp_xmit{,__drops} Alexander Lobakin
2021-08-03 16:42 ` Alexander Lobakin
2021-08-03 16:42 ` Alexander Lobakin [this message]
2021-08-03 16:42 ` [PATCH net-next 20/21] virtio-net: convert to standard XDP stats Alexander Lobakin
2021-08-03 16:42 ` [PATCH net-next 21/21] Documentation, ethtool-netlink: update standard statistics documentation Alexander Lobakin
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