[PATCH] mlx5: fix mlx5_get_vector_affinity to start from completion vector 0

[PATCH] mlx5: fix mlx5_get_vector_affinity to start from completion vector 0

[Sagi Grimberg]

The consumers of this routine expects the affinity map of of vector
index relative to the first completion vector. The upper layers are
not aware of internal/private completion vectors that mlx5 allocates
for its own usage.

Hence, return the affinity map of vector index relative to the first
completion vector.

Fixes: 05e0cc84e00c ("net/mlx5: Fix get vector affinity helper function")
Reported-by: Logan Gunthorpe <logang-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
Tested-by: Max Gurtovoy <maxg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Reviewed-by: Max Gurtovoy <maxg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Cc: <stable-u79uwXL29TY76Z2rM5mHXA@public.gmane.org> # v4.15
Signed-off-by: Sagi Grimberg <sagi-NQWnxTmZq1alnMjI0IkVqw@public.gmane.org>
---
 include/linux/mlx5/driver.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index a0610427e168..b82c4ae92411 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -1238,7 +1238,7 @@ mlx5_get_vector_affinity(struct mlx5_core_dev *dev, int vector)
 	int eqn;
 	int err;
 
-	err = mlx5_vector2eqn(dev, vector, &eqn, &irq);
+	err = mlx5_vector2eqn(dev, MLX5_EQ_VEC_COMP_BASE + vector, &eqn, &irq);
 	if (err)
 		return NULL;
 
-- 
2.14.1

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Re: [PATCH] mlx5: fix mlx5_get_vector_affinity to start from completion vector 0

[Sagi Grimberg]

Sorry, now my .gitaliases updated with Jason's correct email.


On 02/05/2018 04:24 PM, Sagi Grimberg wrote:
> The consumers of this routine expects the affinity map of of vector
> index relative to the first completion vector. The upper layers are
> not aware of internal/private completion vectors that mlx5 allocates
> for its own usage.
> 
> Hence, return the affinity map of vector index relative to the first
> completion vector.
> 
> Fixes: 05e0cc84e00c ("net/mlx5: Fix get vector affinity helper function")
> Reported-by: Logan Gunthorpe <logang-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
> Tested-by: Max Gurtovoy <maxg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> Reviewed-by: Max Gurtovoy <maxg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> Cc: <stable-u79uwXL29TY76Z2rM5mHXA@public.gmane.org> # v4.15
> Signed-off-by: Sagi Grimberg <sagi-NQWnxTmZq1alnMjI0IkVqw@public.gmane.org>
> ---
>   include/linux/mlx5/driver.h | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
> index a0610427e168..b82c4ae92411 100644
> --- a/include/linux/mlx5/driver.h
> +++ b/include/linux/mlx5/driver.h
> @@ -1238,7 +1238,7 @@ mlx5_get_vector_affinity(struct mlx5_core_dev *dev, int vector)
>   	int eqn;
>   	int err;
>   
> -	err = mlx5_vector2eqn(dev, vector, &eqn, &irq);
> +	err = mlx5_vector2eqn(dev, MLX5_EQ_VEC_COMP_BASE + vector, &eqn, &irq);
>   	if (err)
>   		return NULL;
>   
> 
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Re: [PATCH] mlx5: fix mlx5_get_vector_affinity to start from completion vector 0

[Doug Ledford]

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On Mon, 2018-02-05 at 16:28 +0200, Sagi Grimberg wrote:
> Sorry, now my .gitaliases updated with Jason's correct email.

Jason prefers jgg-uk2M96/98Pc@public.gmane.org for his upstream work, so might need to
update again ;-)

-- 
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
    GPG KeyID: B826A3330E572FDD
    Key fingerprint = AE6B 1BDA 122B 23B4 265B  1274 B826 A333 0E57 2FDD

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Re: [PATCH] mlx5: fix mlx5_get_vector_affinity to start from completion vector 0

[Sagi Grimberg]

>> Sorry, now my .gitaliases updated with Jason's correct email.
> 
> Jason prefers jgg-uk2M96/98Pc@public.gmane.org for his upstream work, so might need to
> update again ;-)

Updated ;)
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Re: [PATCH] mlx5: fix mlx5_get_vector_affinity to start from completion vector 0

[Doug Ledford]

[-- Attachment #1: Type: text/plain, Size: 1043 bytes --]

On Mon, 2018-02-05 at 16:24 +0200, Sagi Grimberg wrote:
> The consumers of this routine expects the affinity map of of vector
> index relative to the first completion vector. The upper layers are
> not aware of internal/private completion vectors that mlx5 allocates
> for its own usage.
> 
> Hence, return the affinity map of vector index relative to the first
> completion vector.
> 
> Fixes: 05e0cc84e00c ("net/mlx5: Fix get vector affinity helper function")
> Reported-by: Logan Gunthorpe <logang-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
> Tested-by: Max Gurtovoy <maxg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> Reviewed-by: Max Gurtovoy <maxg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> Cc: <stable-u79uwXL29TY76Z2rM5mHXA@public.gmane.org> # v4.15
> Signed-off-by: Sagi Grimberg <sagi-NQWnxTmZq1alnMjI0IkVqw@public.gmane.org>

Thanks, applied.

-- 
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
    GPG KeyID: B826A3330E572FDD
    Key fingerprint = AE6B 1BDA 122B 23B4 265B  1274 B826 A333 0E57 2FDD

[-- Attachment #2: This is a digitally signed message part --]
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Re: [PATCH] mlx5: fix mlx5_get_vector_affinity to start from completion vector 0

[Logan Gunthorpe]

Thanks Sagi,

I can confirm this fixes our issue.

Nice Catch!

Logan

On 05/02/18 07:24 AM, Sagi Grimberg wrote:
> The consumers of this routine expects the affinity map of of vector
> index relative to the first completion vector. The upper layers are
> not aware of internal/private completion vectors that mlx5 allocates
> for its own usage.
> 
> Hence, return the affinity map of vector index relative to the first
> completion vector.
> 
> Fixes: 05e0cc84e00c ("net/mlx5: Fix get vector affinity helper function")
> Reported-by: Logan Gunthorpe <logang-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
> Tested-by: Max Gurtovoy <maxg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> Reviewed-by: Max Gurtovoy <maxg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> Cc: <stable-u79uwXL29TY76Z2rM5mHXA@public.gmane.org> # v4.15
> Signed-off-by: Sagi Grimberg <sagi-NQWnxTmZq1alnMjI0IkVqw@public.gmane.org>
> ---
>   include/linux/mlx5/driver.h | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
> index a0610427e168..b82c4ae92411 100644
> --- a/include/linux/mlx5/driver.h
> +++ b/include/linux/mlx5/driver.h
> @@ -1238,7 +1238,7 @@ mlx5_get_vector_affinity(struct mlx5_core_dev *dev, int vector)
>   	int eqn;
>   	int err;
>   
> -	err = mlx5_vector2eqn(dev, vector, &eqn, &irq);
> +	err = mlx5_vector2eqn(dev, MLX5_EQ_VEC_COMP_BASE + vector, &eqn, &irq);
>   	if (err)
>   		return NULL;
>   
> 
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