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net: dsa: mv88e6xxx: Fix u64 statistics

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[ Upstream commit 6e46e2d821bb22b285ae8187959096b65d063b0d ]

The switch maintains u64 counters for the number of octets sent and
received. These are kept as two u32's which need to be combined.  Fix
the combing, which wrongly worked on u16's.

Fixes: 80c4627b27 ("dsa: mv88x6xxx: Refactor getting a single statistic")
Reported-by: Chris Healy <Chris.Healy@zii.aero>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andrew Lunn 2019-02-28 18:14:03 +01:00 • committed by Greg Kroah-Hartman
parent dc18101f95
commit aaf68ba03c
1 changed files with 1 additions and 1 deletions
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2
drivers/net/dsa/mv88e6xxx.c
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@ -712,7 +712,7 @@ static uint64_t _mv88e6xxx_get_ethtool_stat(struct dsa_switch *ds,
if (s->sizeof_stat == 8)
_mv88e6xxx_stats_read(ds, s->reg + 1, &high);
}
value = (((u64)high) << 16) | low;
value = (((u64)high) << 32) | low;
return value;
}