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| author | Stefan Buehler <stbuehler@web.de> | 2008-08-15 14:10:54 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-08-15 14:10:54 -0700 |
| commit | 816f8b86621000fc82e16ae5f172164de761d5eb (patch) | |
| tree | b7a6964f422ebb4815314397ae8ed4c69d3fcc70 /drivers/net/tg3.c | |
| parent | 4ba526ced990f4d61ee8d65fe8a6f0745e8e455c (diff) | |
| download | linux-816f8b86621000fc82e16ae5f172164de761d5eb.tar.gz linux-816f8b86621000fc82e16ae5f172164de761d5eb.tar.bz2 linux-816f8b86621000fc82e16ae5f172164de761d5eb.zip | |
tg3: fix 64 bit counter for ethtool stats
Ethtool stats are 64-bits in length. net_device_stats members are
unsigned long types. When gathering information for
a get_ethtool_stats call, the driver will call a driver-private,
inlined get_stat64() function, which returns an unsigned long value.
This call will inadvertently mask off the upper 32-bits of a stat on
32-bit machines.
This patch defines a new get_estat() inline function and modifies the
ESTAT_ADD() macro to use it.
Signed-off-by: Stefan Buehler <stbuehler@web.de>
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/tg3.c')
| -rw-r--r-- | drivers/net/tg3.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index c26011eaa2be..ada1d0d11045 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -8466,6 +8466,11 @@ static inline unsigned long get_stat64(tg3_stat64_t *val) return ret; } +static inline u64 get_estat64(tg3_stat64_t *val) +{ + return ((u64)val->high << 32) | ((u64)val->low); +} + static unsigned long calc_crc_errors(struct tg3 *tp) { struct tg3_hw_stats *hw_stats = tp->hw_stats; @@ -8494,7 +8499,7 @@ static unsigned long calc_crc_errors(struct tg3 *tp) #define ESTAT_ADD(member) \ estats->member = old_estats->member + \ - get_stat64(&hw_stats->member) + get_estat64(&hw_stats->member) static struct tg3_ethtool_stats *tg3_get_estats(struct tg3 *tp) { |