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Petr Machata authored
The IFLA_STATS_LINK_OFFLOAD_XSTATS attribute is a nest whose child attributes carry various special hardware statistics. The code that handles this nest was written with the idea that all these statistics would be exposed by the device driver of a physical netdevice. In the following patches, a new attribute is added to the abovementioned nest, which however can be defined for some soft netdevices. The NDO-based approach to querying these does not work, because it is not the soft netdevice driver that exposes these statistics, but an offloading NIC driver that does so. The current code does not scale well to this usage. Simply rewrite it back to the pattern seen in other fill-like and get_size-like functions elsewhere. Extract to helpers the code that is concerned with handling specifically NDO-backed statistics so that it can be easily reused should more such statistics be added. Signed-off-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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