IB/mlx4: Saturate RoCE port PMA counters in case of overflow
authorMajd Dibbiny <majd@mellanox.com>
Wed, 18 Mar 2015 14:51:37 +0000 (16:51 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 19 Apr 2015 08:10:50 +0000 (10:10 +0200)
commit94efa6abf172d13d70c167388f327f4b5cee7e02
tree45f7850e9df8fa603398a28aa2c21acdb5972887
parent0121b8bf67ce4d613b58855f6e8558356bffe789
IB/mlx4: Saturate RoCE port PMA counters in case of overflow

commit 61a3855bb726cbb062ef02a31a832dea455456e0 upstream.

For RoCE ports, we set the u32 PMA values based on u64 HCA counters. In case of
overflow, according to the IB spec, we have to saturate a counter to its
max value, do that.

Fixes: c37791349cc7 ('IB/mlx4: Support PMA counters for IBoE')
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/infiniband/hw/mlx4/mad.c