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[2003:ea:8f23:2800:dc4f:e3f6:2803:90d0]) by smtp.googlemail.com with ESMTPSA id h12sm2009185wrw.70.2020.11.01.04.38.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 01 Nov 2020 04:38:22 -0800 (PST) Subject: [PATCH net-next 1/5] net: core: add dev_get_tstats64 as a ndo_get_stats64 implementation From: Heiner Kallweit To: Jakub Kicinski , David Miller , Alexey Kuznetsov , Hideaki YOSHIFUJI , Andrew Lunn , Vivien Didelot , Florian Fainelli , Vladimir Oltean , Russell King Cc: "netdev@vger.kernel.org" References: <25c7e008-c3fb-9fcd-f518-5d36e181c0cb@gmail.com> Message-ID: <4580e187-9c2f-dfdf-d135-a5c420451428@gmail.com> Date: Sun, 1 Nov 2020 13:34:10 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.4.0 MIME-Version: 1.0 In-Reply-To: <25c7e008-c3fb-9fcd-f518-5d36e181c0cb@gmail.com> Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org It's a frequent pattern to use netdev->stats for the less frequently accessed counters and per-cpu counters for the frequently accessed counters (rx/tx bytes/packets). Add a default ndo_get_stats64() implementation for this use case. Signed-off-by: Heiner Kallweit Reviewed-by: Florian Fainelli --- include/linux/netdevice.h | 1 + net/core/dev.c | 15 +++++++++++++++ 2 files changed, 16 insertions(+) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 6e06fef32..72643c193 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -4527,6 +4527,7 @@ void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64, const struct net_device_stats *netdev_stats); void dev_fetch_sw_netstats(struct rtnl_link_stats64 *s, const struct pcpu_sw_netstats __percpu *netstats); +void dev_get_tstats64(struct net_device *dev, struct rtnl_link_stats64 *s); extern int netdev_max_backlog; extern int netdev_tstamp_prequeue; diff --git a/net/core/dev.c b/net/core/dev.c index 82dc6b48e..81abc4f98 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -10366,6 +10366,21 @@ void dev_fetch_sw_netstats(struct rtnl_link_stats64 *s, } EXPORT_SYMBOL_GPL(dev_fetch_sw_netstats); +/** + * dev_get_tstats64 - ndo_get_stats64 implementation + * @dev: device to get statistics from + * @s: place to store stats + * + * Populate @s from dev->stats and dev->tstats. Can be used as + * ndo_get_stats64() callback. + */ +void dev_get_tstats64(struct net_device *dev, struct rtnl_link_stats64 *s) +{ + netdev_stats_to_stats64(s, &dev->stats); + dev_fetch_sw_netstats(s, dev->tstats); +} +EXPORT_SYMBOL_GPL(dev_get_tstats64); + struct netdev_queue *dev_ingress_queue_create(struct net_device *dev) { struct netdev_queue *queue = dev_ingress_queue(dev);