[PATCH rdma-next v2 01/15] RDMA/mlx5: Allow optional access flags in DM registration

[PATCH rdma-next v2 01/15] RDMA/mlx5: Allow optional access flags in DM registration

[Michael Gur]

The uverbs ABI reserves the optional access flags range as best-effort:
drivers should accept any flag in this range and treat the actual support
as opportunistic, never failing registration when an optional flag is
requested.

Add the optional access flag to the allow-lists of DM registrations.
Uverbs users can now request any optional access flag on DM registrations
and mlx5 will apply the flag's effect on a best-effort basis when
supported.

Fixes: 68d384b906cf ("RDMA/core: Add optional access flags range")
Cc: stable@vger.kernel.org
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Yishai Hadas <yishaih@nvidia.com>
Signed-off-by: Michael Gur <michaelgur@nvidia.com>
---
 drivers/infiniband/hw/mlx5/mlx5_ib.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index 4a6ee14ffd7d..86465d9d2b5a 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -661,11 +661,13 @@ struct mlx5_ib_mkey {
 					 IB_ACCESS_REMOTE_WRITE  |\
 					 IB_ACCESS_REMOTE_READ   |\
 					 IB_ACCESS_REMOTE_ATOMIC |\
+					 IB_ACCESS_OPTIONAL      |\
 					 IB_ZERO_BASED)
 
 #define MLX5_IB_DM_SW_ICM_ALLOWED_ACCESS (IB_ACCESS_LOCAL_WRITE   |\
 					  IB_ACCESS_REMOTE_WRITE  |\
 					  IB_ACCESS_REMOTE_READ   |\
+					  IB_ACCESS_OPTIONAL      |\
 					  IB_ZERO_BASED)
 
 #define mlx5_update_odp_stats(mr, counter_name, value)		\
-- 
2.52.0

[PATCH rdma-next v2 02/15] RDMA/mlx5: Allow optional access flags in DEVX UMEM registration

[Michael Gur]

The uverbs ABI reserves the optional access flags range as best-effort:
drivers should accept any flag in this range and treat the actual support
as opportunistic, never failing registration when an optional flag is
requested.

Add the optional access flag to the allow-list of DEVX UMEM registration.
Uverbs users can now request any optional access flag on these
registrations and mlx5 will apply the flag's effect on a best-effort
basis when supported.

Fixes: 72b2f7608a59 ("RDMA/mlx5: Enable ATS support for MRs and umems")
Cc: stable@vger.kernel.org
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Yishai Hadas <yishaih@nvidia.com>
Signed-off-by: Michael Gur <michaelgur@nvidia.com>
---
 drivers/infiniband/hw/mlx5/devx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/mlx5/devx.c b/drivers/infiniband/hw/mlx5/devx.c
index fc6f793dcc65..ec281a4ba42e 100644
--- a/drivers/infiniband/hw/mlx5/devx.c
+++ b/drivers/infiniband/hw/mlx5/devx.c
@@ -2410,7 +2410,7 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_UMEM_REG)(
 				 IB_ACCESS_LOCAL_WRITE |
 				 IB_ACCESS_REMOTE_WRITE |
 				 IB_ACCESS_REMOTE_READ |
-				 IB_ACCESS_RELAXED_ORDERING);
+				 IB_ACCESS_OPTIONAL);
 	if (err)
 		return err;
 
-- 
2.52.0

[PATCH rdma-next v2 03/15] RDMA/core: Allow optional access flags in dmabuf reg ioctl

[Michael Gur]

The uverbs ABI reserves the optional access flags range as best-effort:
drivers should accept any flag in this range and treat the actual support
as opportunistic, never failing registration when an optional flag is
requested.

Add the optional access flag to the allow-list of dmabuf registration
ioctl. Uverbs users can now request any optional access flag on dmabuf
registrations and drivers will apply the flag's effect on a best-effort
basis when supported.

Fixes: bfe0cc6eb249 ("RDMA/uverbs: Add uverbs command for dma-buf based MR registration")
Cc: stable@vger.kernel.org
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Yishai Hadas <yishaih@nvidia.com>
Signed-off-by: Michael Gur <michaelgur@nvidia.com>
---
 drivers/infiniband/core/uverbs_std_types_mr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/core/uverbs_std_types_mr.c b/drivers/infiniband/core/uverbs_std_types_mr.c
index 0c72f801e0d3..b6d6cbe448a2 100644
--- a/drivers/infiniband/core/uverbs_std_types_mr.c
+++ b/drivers/infiniband/core/uverbs_std_types_mr.c
@@ -229,7 +229,7 @@ static int UVERBS_HANDLER(UVERBS_METHOD_REG_DMABUF_MR)(
 				 IB_ACCESS_REMOTE_READ |
 				 IB_ACCESS_REMOTE_WRITE |
 				 IB_ACCESS_REMOTE_ATOMIC |
-				 IB_ACCESS_RELAXED_ORDERING);
+				 IB_ACCESS_OPTIONAL);
 	if (ret)
 		return ret;
 
-- 
2.52.0

[PATCH rdma-next v2 04/15] RDMA/core: Allow optional access flags in reg mr ioctl

[Michael Gur]

The uverbs ABI reserves the optional access flags range as best-effort:
drivers should accept any flag in this range and treat the actual support
as opportunistic, never failing registration when an optional flag is
requested.

Add the optional access flag to the allow-list of dmabuf registration
through the reg_mr ioctl. Uverbs users can now request any optional access
flag on dmabuf registrations and mlx5 will apply the flag's effect on a
best-effort basis when supported.

Fixes: 5b2e45049dc0 ("IB/core: Add UVERBS_METHOD_REG_MR on the MR object")
Cc: stable@vger.kernel.org
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Yishai Hadas <yishaih@nvidia.com>
Signed-off-by: Michael Gur <michaelgur@nvidia.com>
---
 drivers/infiniband/core/uverbs_std_types_mr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/core/uverbs_std_types_mr.c b/drivers/infiniband/core/uverbs_std_types_mr.c
index b6d6cbe448a2..ce6c9aaea95d 100644
--- a/drivers/infiniband/core/uverbs_std_types_mr.c
+++ b/drivers/infiniband/core/uverbs_std_types_mr.c
@@ -332,7 +332,7 @@ static int UVERBS_HANDLER(UVERBS_METHOD_REG_MR)(
 				     IB_ACCESS_REMOTE_READ |
 				     IB_ACCESS_REMOTE_WRITE |
 				     IB_ACCESS_REMOTE_ATOMIC |
-				     IB_ACCESS_RELAXED_ORDERING;
+				     IB_ACCESS_OPTIONAL;
 	} else {
 		if (!has_addr || has_fd_offset)
 			return -EINVAL;
-- 
2.52.0