netdev - [PATCH v2 net-next 1/2] Documentation: sysfs-class-net-statistics: Clarify rx_bytes and tx

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Message-Id: <1495573858-32346-2-git-send-email-andrew@lunn.ch>
Date:   Tue, 23 May 2017 23:10:57 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     David Miller <davem@...emloft.net>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        hayeswang <hayeswang@...ltek.com>,
        netdev <netdev@...r.kernel.org>, Andrew Lunn <andrew@...n.ch>
Subject: [PATCH v2 net-next 1/2] Documentation: sysfs-class-net-statistics: Clarify rx_bytes and tx_bytes

Document what is expected for the rx_bytes and tx_bytes statistics in
/sys/class/net/<device>/statistics. The FCS should be included in the
statistics. However, since this has been unclear until now, it is
expected a number of drivers don't. But maybe with time they will.

Signed-off-by: Andrew Lunn <andrew@...n.ch>
---
 Documentation/ABI/testing/sysfs-class-net-statistics | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Documentation/ABI/testing/sysfs-class-net-statistics b/Documentation/ABI/testing/sysfs-class-net-statistics
index 397118de7b5e..a487cbb79458 100644
--- a/Documentation/ABI/testing/sysfs-class-net-statistics
+++ b/Documentation/ABI/testing/sysfs-class-net-statistics
@@ -21,7 +21,8 @@ Contact:	netdev@...r.kernel.org
 Description:
 		Indicates the number of bytes received by this network device.
 		See the network driver for the exact meaning of when this
-		value is incremented.
+		value is incremented. However, for an Ethernet frame, it should
+		include the Ethernet header, data, and frame check sum.
 
 What:		/sys/class/<iface>/statistics/rx_compressed
 Date:		April 2005
@@ -125,7 +126,8 @@ Description:
 		device. See the network driver for the exact meaning of this
 		value, in particular whether this accounts for all successfully
 		transmitted packets or all packets that have been queued for
-		transmission.
+		transmission. For an Ethernet frame, it should include the
+		Ethernet header, data, and frame check sum.
 
 What:		/sys/class/<iface>/statistics/tx_carrier_errors
 Date:		April 2005
-- 
2.11.0