net/mlx5_core: Add helper function to read IB error counters
Added helper function to read IB standard error counters via the PPCNT register. The PPCNT register read command provides the 32-bit error counters of both IB/RoCE link layer and transport layer. Signed-off-by: NMeny Yossefi <menyy@mellanox.com> Signed-off-by: NMajd Dibbiny <majd@mellanox.com> Reviewed-by: NMatan Barak <matanb@mellanox.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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