[PATCH V2] IB/mlx5: Unify CQ create flags check

[PATCH V2] IB/mlx5: Unify CQ create flags check

[Leon Romanovsky]

From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>

The create_cq() can receive creation flags which were used
differently by two following commits [1] and [2]. The current
code caused to not accept any flags at all.

This patch unifies the check into one function and one return
error code.

Fixes: 972ecb821379 ("IB/mlx5: Add create_cq extended command")
Fixes: 051f263098a9 ("IB/mlx5: Add driver cross-channel support")

[1] http://www.spinics.net/lists/linux-rdma/msg31430.html
[2] http://www.spinics.net/lists/linux-rdma/msg31658.html

Changes from v0:
  * Add Fixes tag

Signed-off-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
---
 drivers/infiniband/hw/mlx5/cq.c      | 9 +--------
 drivers/infiniband/hw/mlx5/mlx5_ib.h | 3 ++-
 2 files changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c
index b14316603e44..7ddc790b1819 100644
--- a/drivers/infiniband/hw/mlx5/cq.c
+++ b/drivers/infiniband/hw/mlx5/cq.c
@@ -757,10 +757,6 @@ static void destroy_cq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq)
 	mlx5_db_free(dev->mdev, &cq->db);
 }
 
-enum {
-	CQ_CREATE_FLAGS_SUPPORTED = IB_CQ_FLAGS_TIMESTAMP_COMPLETION
-};
-
 struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev,
 				const struct ib_cq_init_attr *attr,
 				struct ib_ucontext *context,
@@ -778,13 +774,10 @@ struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev,
 	int eqn;
 	int err;
 
-	if (check_cq_create_flags(attr->flags))
-		return ERR_PTR(-EINVAL);
-
 	if (entries < 0)
 		return ERR_PTR(-EINVAL);
 
-	if (attr->flags & ~CQ_CREATE_FLAGS_SUPPORTED)
+	if (check_cq_create_flags(attr->flags))
 		return ERR_PTR(-EOPNOTSUPP);
 
 	entries = roundup_pow_of_two(entries + 1);
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index d4b227126265..fbf14a768105 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -692,6 +692,7 @@ static inline u32 check_cq_create_flags(u32 flags)
 	 * It returns non-zero value for unsupported CQ
 	 * create flags, otherwise it returns zero.
 	 */
-	return (flags & ~IB_CQ_FLAGS_IGNORE_OVERRUN);
+	return (flags & ~(IB_CQ_FLAGS_IGNORE_OVERRUN |
+			  IB_CQ_FLAGS_TIMESTAMP_COMPLETION));
 }
 #endif /* MLX5_IB_H */
-- 
1.7.12.4

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Re: [PATCH V2] IB/mlx5: Unify CQ create flags check

[Sagi Grimberg]

> From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
>
> The create_cq() can receive creation flags which were used
> differently by two following commits [1] and [2]. The current
> code caused to not accept any flags at all.

We can skip referencing the linux-rdma mailing list.

>
> This patch unifies the check into one function and one return
> error code.
>
> Fixes: 972ecb821379 ("IB/mlx5: Add create_cq extended command")
> Fixes: 051f263098a9 ("IB/mlx5: Add driver cross-channel support")
>
> [1] http://www.spinics.net/lists/linux-rdma/msg31430.html
> [2] http://www.spinics.net/lists/linux-rdma/msg31658.html
>
> Changes from v0:
>    * Add Fixes tag

Umm, the above ([1], [2], Changes) usually go under the "---"
separator so we won't see them in git log forever.

>
> Signed-off-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> ---
>   drivers/infiniband/hw/mlx5/cq.c      | 9 +--------
>   drivers/infiniband/hw/mlx5/mlx5_ib.h | 3 ++-
>   2 files changed, 3 insertions(+), 9 deletions(-)
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Re: [PATCH V2] IB/mlx5: Unify CQ create flags check

[Leon Romanovsky]

On Tue, Dec 29, 2015 at 03:51:47PM +0200, Sagi Grimberg wrote:
> >From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> >
> >The create_cq() can receive creation flags which were used
> >differently by two following commits [1] and [2]. The current
> >code caused to not accept any flags at all.
> 
> We can skip referencing the linux-rdma mailing list.
> 
> >
> >This patch unifies the check into one function and one return
> >error code.
> >
> >Fixes: 972ecb821379 ("IB/mlx5: Add create_cq extended command")
> >Fixes: 051f263098a9 ("IB/mlx5: Add driver cross-channel support")
> >
> >[1] http://www.spinics.net/lists/linux-rdma/msg31430.html
> >[2] http://www.spinics.net/lists/linux-rdma/msg31658.html
> >
> >Changes from v0:
> >   * Add Fixes tag
> 
> Umm, the above ([1], [2], Changes) usually go under the "---"
> separator so we won't see them in git log forever.

Doug,
Do you want me resend the patch?

> 
> >
> >Signed-off-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> >---
> >  drivers/infiniband/hw/mlx5/cq.c      | 9 +--------
> >  drivers/infiniband/hw/mlx5/mlx5_ib.h | 3 ++-
> >  2 files changed, 3 insertions(+), 9 deletions(-)
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Re: [PATCH V2] IB/mlx5: Unify CQ create flags check

[Leon Romanovsky]

On Tue, Dec 29, 2015 at 04:03:41PM +0200, Leon Romanovsky wrote:
> On Tue, Dec 29, 2015 at 03:51:47PM +0200, Sagi Grimberg wrote:
> > >From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> > >
> > >The create_cq() can receive creation flags which were used
> > >differently by two following commits [1] and [2]. The current
> > >code caused to not accept any flags at all.
> > 
> > We can skip referencing the linux-rdma mailing list.
> > 
> > >
> > >This patch unifies the check into one function and one return
> > >error code.
> > >
> > >Fixes: 972ecb821379 ("IB/mlx5: Add create_cq extended command")
> > >Fixes: 051f263098a9 ("IB/mlx5: Add driver cross-channel support")
> > >
> > >[1] http://www.spinics.net/lists/linux-rdma/msg31430.html
> > >[2] http://www.spinics.net/lists/linux-rdma/msg31658.html
> > >
> > >Changes from v0:
> > >   * Add Fixes tag
> > 
> > Umm, the above ([1], [2], Changes) usually go under the "---"
> > separator so we won't see them in git log forever.
> 
> Doug,
> Do you want me resend the patch?

I sent new version.
Thanks.

> 
> > 
> > >
> > >Signed-off-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> > >---
> > >  drivers/infiniband/hw/mlx5/cq.c      | 9 +--------
> > >  drivers/infiniband/hw/mlx5/mlx5_ib.h | 3 ++-
> > >  2 files changed, 3 insertions(+), 9 deletions(-)
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[PATCH V2] IB/mlx5: Unify CQ create flags check

[Leon Romanovsky]

From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>

The create_cq() can receive creation flags which were used
differently by two commits which added create_cq extended
command and cross-channel. The merged code caused to not
accept any flags at all.

This patch unifies the check into one function and one return
error code.

Fixes: 972ecb821379 ("IB/mlx5: Add create_cq extended command")
Fixes: 051f263098a9 ("IB/mlx5: Add driver cross-channel support")

---
Changes from v1:
  * Remove links to linux-rdma from commit message
  * Placed change log under git comment section (---)
Changes from v0:
  * Add Fixes tag

Signed-off-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
---
 drivers/infiniband/hw/mlx5/cq.c      | 9 +--------
 drivers/infiniband/hw/mlx5/mlx5_ib.h | 3 ++-
 2 files changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c
index b14316603e44..7ddc790b1819 100644
--- a/drivers/infiniband/hw/mlx5/cq.c
+++ b/drivers/infiniband/hw/mlx5/cq.c
@@ -757,10 +757,6 @@ static void destroy_cq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq)
 	mlx5_db_free(dev->mdev, &cq->db);
 }
 
-enum {
-	CQ_CREATE_FLAGS_SUPPORTED = IB_CQ_FLAGS_TIMESTAMP_COMPLETION
-};
-
 struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev,
 				const struct ib_cq_init_attr *attr,
 				struct ib_ucontext *context,
@@ -778,13 +774,10 @@ struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev,
 	int eqn;
 	int err;
 
-	if (check_cq_create_flags(attr->flags))
-		return ERR_PTR(-EINVAL);
-
 	if (entries < 0)
 		return ERR_PTR(-EINVAL);
 
-	if (attr->flags & ~CQ_CREATE_FLAGS_SUPPORTED)
+	if (check_cq_create_flags(attr->flags))
 		return ERR_PTR(-EOPNOTSUPP);
 
 	entries = roundup_pow_of_two(entries + 1);
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index d4b227126265..fbf14a768105 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -692,6 +692,7 @@ static inline u32 check_cq_create_flags(u32 flags)
 	 * It returns non-zero value for unsupported CQ
 	 * create flags, otherwise it returns zero.
 	 */
-	return (flags & ~IB_CQ_FLAGS_IGNORE_OVERRUN);
+	return (flags & ~(IB_CQ_FLAGS_IGNORE_OVERRUN |
+			  IB_CQ_FLAGS_TIMESTAMP_COMPLETION));
 }
 #endif /* MLX5_IB_H */
-- 
1.7.12.4

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Re: [PATCH V2] IB/mlx5: Unify CQ create flags check

[Or Gerlitz]

On 12/29/2015 4:41 PM, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
>
> The create_cq() can receive creation flags which were used
> differently by two commits which added create_cq extended
> command and cross-channel. The merged code caused to not
> accept any flags at all.
>
> This patch unifies the check into one function and one return
> error code.
>
> Fixes: 972ecb821379 ("IB/mlx5: Add create_cq extended command")
> Fixes: 051f263098a9 ("IB/mlx5: Add driver cross-channel support")
>
> ---
> Changes from v1:
>    * Remove links to linux-rdma from commit message
>    * Placed change log under git comment section (---)
> Changes from v0:
>    * Add Fixes tag
>
> Signed-off-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
wrong placing. Needs to be before the 1st --- and w.o blank lines after 
the Fixes: lines please

Please use dry runs to get this to run (...) correctly


> ---
>   drivers/infiniband/hw/mlx5/cq.c      | 9 +--------
>   drivers/infiniband/hw/mlx5/mlx5_ib.h | 3 ++-
>   2 files changed, 3 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c
> index b14316603e44..7ddc790b1819 100644
> --- a/drivers/infiniband/hw/mlx5/cq.c
> +++ b/drivers/infiniband/hw/mlx5/cq.c
> @@ -757,10 +757,6 @@ static void destroy_cq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq)
>   	mlx5_db_free(dev->mdev, &cq->db);
>   }
>   
> -enum {
> -	CQ_CREATE_FLAGS_SUPPORTED = IB_CQ_FLAGS_TIMESTAMP_COMPLETION
> -};
> -
>   struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev,
>   				const struct ib_cq_init_attr *attr,
>   				struct ib_ucontext *context,
> @@ -778,13 +774,10 @@ struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev,
>   	int eqn;
>   	int err;
>   
> -	if (check_cq_create_flags(attr->flags))
> -		return ERR_PTR(-EINVAL);
> -
>   	if (entries < 0)
>   		return ERR_PTR(-EINVAL);
>   
> -	if (attr->flags & ~CQ_CREATE_FLAGS_SUPPORTED)
> +	if (check_cq_create_flags(attr->flags))
>   		return ERR_PTR(-EOPNOTSUPP);
>   
>   	entries = roundup_pow_of_two(entries + 1);
> diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
> index d4b227126265..fbf14a768105 100644
> --- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
> +++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
> @@ -692,6 +692,7 @@ static inline u32 check_cq_create_flags(u32 flags)
>   	 * It returns non-zero value for unsupported CQ
>   	 * create flags, otherwise it returns zero.
>   	 */
> -	return (flags & ~IB_CQ_FLAGS_IGNORE_OVERRUN);
> +	return (flags & ~(IB_CQ_FLAGS_IGNORE_OVERRUN |
> +			  IB_CQ_FLAGS_TIMESTAMP_COMPLETION));
>   }
>   #endif /* MLX5_IB_H */

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