netdev - Re: [PATCH 2/2] Do not set shared_ports when nreq > MAX

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Date:	Wed, 7 Oct 2015 00:39:56 +0300
From:	Or Gerlitz <gerlitz.or@...il.com>
To:	Carol L Soto <clsoto@...ux.vnet.ibm.com>,
	Matan Barak <matanb@...lanox.com>
Cc:	David Miller <davem@...emloft.net>,
	Linux Netdev List <netdev@...r.kernel.org>,
	Or Gerlitz <ogerlitz@...lanox.com>, brking@...ux.vnet.ibm.com
Subject: Re: [PATCH 2/2] Do not set shared_ports when nreq > MAX_MSIX

On Wed, Oct 7, 2015 at 12:27 AM,  <clsoto@...ux.vnet.ibm.com> wrote:
> From: Carol L Soto <clsoto@...ux.vnet.ibm.com>
>
> If we get MAX_MSIX interrupts would like to have each receive ring
> with his own msix interrupt line.

so 9293267a3e2a  was only partially correct? and/or not fully optimal?
please elaborate more on that in your change log.

>
> Fixes: 9293267a3e2a ('net/mlx4_core: Capping number of requested MSIXs to MAX_MSIX')
> Signed-off-by: Carol L Soto <clsoto@...ux.vnet.ibm.com>

Carol, you didn't use net/mlx4: prefix as ask for mlx4 driver patch
titles, so please repost, but before that I'd like to see an ack from
Matan for this patch as well.

Or.

>
> ---
>  drivers/net/ethernet/mellanox/mlx4/main.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
> index 006757f..f03f513 100644
> --- a/drivers/net/ethernet/mellanox/mlx4/main.c
> +++ b/drivers/net/ethernet/mellanox/mlx4/main.c
> @@ -2673,10 +2673,8 @@ static void mlx4_enable_msi_x(struct mlx4_dev *dev)
>
>                 nreq = min_t(int, dev->caps.num_eqs - dev->caps.reserved_eqs,
>                              nreq);
> -               if (nreq > MAX_MSIX) {
> +               if (nreq > MAX_MSIX)
>                         nreq = MAX_MSIX;
> -                       shared_ports = true;
> -               }
>
>                 entries = kcalloc(nreq, sizeof *entries, GFP_KERNEL);
>                 if (!entries)
> --
> 1.8.3.1
>
> --
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