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IB/mlx5: Respect new UMR capabilities

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In some firmware configuration, UMR usage from Virtual Functions is restricted.
This information is published to the driver using new capability bits.

Avoid using UMRs in these cases and use the Firmware slow-path flow to create
mkeys and populate them with Virtual to Physical address translation.

Older drivers that do not have this patch, will end up using memory keys that
aren't populated with Virtual to Physical address translation that is done
part of the UMR work.

Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Tested-by: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Majd Dibbiny
2018-03-22 15:34:04 +02:00
committed by Jason Gunthorpe
parent ea8af0d2f2
commit c8d75a980f
3 changed files with 53 additions and 9 deletions
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6
include/linux/mlx5/mlx5_ifc.h
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@@ -916,7 +916,11 @@ struct mlx5_ifc_cmd_hca_cap_bits {
u8 reserved_at_202[0x1];
u8 ipoib_enhanced_offloads[0x1];
u8 ipoib_basic_offloads[0x1];
u8 reserved_at_205[0x5];
u8 reserved_at_205[0x1];
u8 repeated_block_disabled[0x1];
u8 umr_modify_entity_size_disabled[0x1];
u8 umr_modify_atomic_disabled[0x1];
u8 umr_indirect_mkey_disabled[0x1];
u8 umr_fence[0x2];
u8 reserved_at_20c[0x3];
u8 drain_sigerr[0x1];