netdev - [PATCH] vif queue counters from int to long

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Message-ID: <585D3E23.10509@greenhost.nl>
Date:   Fri, 23 Dec 2016 16:09:23 +0100
From:   Mart van Santen <mart@...enhost.nl>
To:     netdev@...r.kernel.org
Cc:     ian.campbell@...rix.com, wei.liu2@...rix.com
Subject: [PATCH] vif queue counters from int to long


Hello,

This patch fixes an issue where counters in the queue have type int,
while the counters of the vif itself are specified as long. This can
cause incorrect reporting of tx/rx values of the vif interface.
More extensively reported on xen-devel mailinglist.



Signed-off-by: Mart van Santen <mart@...enhost.nl>
--- a/drivers/net/xen-netback/common.h  2016-12-22 15:41:07.785535748 +0000
+++ b/drivers/net/xen-netback/common.h  2016-12-23 13:08:18.123080064 +0000
@@ -113,10 +113,10 @@ struct xenvif_stats {
         * A subset of struct net_device_stats that contains only the
         * fields that are updated in netback.c for each queue.
         */
-       unsigned int rx_bytes;
-       unsigned int rx_packets;
-       unsigned int tx_bytes;
-       unsigned int tx_packets;
+       unsigned long rx_bytes;
+       unsigned long rx_packets;
+       unsigned long tx_bytes;
+       unsigned long tx_packets;

        /* Additional stats used by xenvif */
        unsigned long rx_gso_checksum_fixup;

-- 
Mart van Santen
Greenhost
E: mart@...enhost.nl
T: +31 20 4890444
W: https://greenhost.nl

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