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SubjectRe: intermittant petabyte usage reported with broadcom nic
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[Adding Michael Chan, who seems to look after bnx2, to the cc list]

> To clarify it's an Intel Dual Core Xeon (I just wound up as thinking of
> them all as amd64s). Network card driver in use is the one defined by
> CONFIG_BNX2. Kernel's monolithic.

From a quick look at bnx2.c, it seems that the driver gives the NIC
(firmware?) a block of memory to DMA stats into, and just reads from
that memory in its get_stats method. So if you're seeing wonky stats
from the NIC intermittently, my best guess would be that firmware is
occasionally writing junk into the stats block.

- R.
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