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The variables for network statistics (in struct net_device_stats) are unsigned
longs. On 32-bit architectures, this makes them overflow every 4GB or 2^32
packets. The following series of patches [against 2.5.74] makes the
statistics variable type configurable. The default is to leave everything the
way it was (unsigned long). However, when NETSTATS64 is set in the config,
the statistics use 64-bit variables (u_int64_t) - this works only on 32-bit
architectures.
These patches are *not* ready to be included due to the fact that they add an
API layer that controls the statistics and all the drivers have to be
checked. For easier coding, the patch renames the fields in struct
net_device_stat - this breaks everything (so all the previous code is easily
visible.) (The names are prefixed with _.)
This is a RFC, please let me know what you think should be improved.
*NOTE* I am aware that locking is suboptimal - I am looking for other
solutions.
The patches include:
- Documentation/networking/64bitstats.txt with description of the API, and
current status of this project (I'm not sure about some of the arch dependent
suff)
- updated drivers to use new API
- 8139too
- 8390
- dummy
- eepro100
- loopback
- ne2k-pci
- pcnet32
- update for procfs and sysfs interfaces
Thanks,
Jeff.
- --
You measure democracy by the freedom it gives its dissidents, not the
freedom it gives its assimilated conformists.
- Abbie Hoffman
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