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Date:   Tue, 10 Mar 2020 16:11:16 +0200
From:   Tariq Toukan <tariqt@...lanox.com>
To:     Jakub Kicinski <kuba@...nel.org>, davem@...emloft.net
Cc:     netdev@...r.kernel.org, akiyano@...zon.com, netanel@...zon.com,
        gtzalik@...zon.com, irusskikh@...vell.com, f.fainelli@...il.com,
        bcm-kernel-feedback-list@...adcom.com, rmody@...vell.com,
        GR-Linux-NIC-Dev@...vell.com, aelior@...vell.com,
        skalluru@...vell.com, GR-everest-linux-l2@...vell.com,
        opendmb@...il.com, siva.kallam@...adcom.com, prashant@...adcom.com,
        mchan@...adcom.com, dchickles@...vell.com, sburla@...vell.com,
        fmanlunas@...vell.com, tariqt@...lanox.com, vishal@...lsio.com,
        leedom@...lsio.com, ulli.kroll@...glemail.com,
        linus.walleij@...aro.org
Subject: Re: [PATCH net-next 10/15] net: mlx4: reject unsupported coalescing
 params



On 3/10/2020 4:15 AM, Jakub Kicinski wrote:
> Set ethtool_ops->supported_coalesce_params to let
> the core reject unsupported coalescing parameters.
> 
> This driver did not previously reject unsupported parameters.
> 
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>
> ---
>   drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | 4 ++++
>   1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
> index 8bf1f08fdee2..8a5ea2543670 100644
> --- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
> +++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
> @@ -2121,6 +2121,10 @@ static int mlx4_en_set_phys_id(struct net_device *dev,
>   }
>   
>   const struct ethtool_ops mlx4_en_ethtool_ops = {
> +	.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
> +				     ETHTOOL_COALESCE_MAX_FRAMES |
> +				     ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ |
> +				     ETHTOOL_COALESCE_PKT_RATE_RX_USECS,
Hi Jakub,

We support several more params:

ETHTOOL_COALESCE_RX_USECS_LOW
ETHTOOL_COALESCE_RX_USECS_HIGH
ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL
ETHTOOL_COALESCE_PKT_RATE_LOW
ETHTOOL_COALESCE_PKT_RATE_HIGH
ETHTOOL_COALESCE_USE_ADAPTIVE_RX
ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW
ETHTOOL_COALESCE_TX_USECS


>   	.get_drvinfo = mlx4_en_get_drvinfo,
>   	.get_link_ksettings = mlx4_en_get_link_ksettings,
>   	.set_link_ksettings = mlx4_en_set_link_ksettings,
> 

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