netdev - Re: [PATCH RESEND ethtool-next] netlink: settings: add netlink support for coalesce cqe mode parameter

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Date:   Sun, 29 Aug 2021 18:57:25 +0200
From:   Michal Kubecek <mkubecek@...e.cz>
To:     Yufeng Mo <moyufeng@...wei.com>
Cc:     davem@...emloft.net, kuba@...nel.org, amitc@...lanox.com,
        idosch@...sch.org, andrew@...n.ch, o.rempel@...gutronix.de,
        f.fainelli@...il.com, jacob.e.keller@...el.com, mlxsw@...lanox.com,
        netdev@...r.kernel.org, lipeng321@...wei.com, linuxarm@...wei.com,
        linuxarm@...neuler.org
Subject: Re: [PATCH RESEND ethtool-next] netlink: settings: add netlink
 support for coalesce cqe mode parameter

On Fri, Aug 27, 2021 at 02:06:48PM +0800, Yufeng Mo wrote:
> Add support for "ethtool -c <dev> cqe-mode-rx/cqe-mode-tx on/off"
> for setting coalesce cqe mode.
> 
> Signed-off-by: Yufeng Mo <moyufeng@...wei.com>
> ---
>  ethtool.c          |  2 ++
>  netlink/coalesce.c | 15 +++++++++++++++
>  2 files changed, 17 insertions(+)

Please update also the man page (file ethtool.8.in) to show the new
parameters.

Michal

> diff --git a/ethtool.c b/ethtool.c
> index 2486caa..a6826e9 100644
> --- a/ethtool.c
> +++ b/ethtool.c
> @@ -5703,6 +5703,8 @@ static const struct option args[] = {
>  			  "		[tx-usecs-high N]\n"
>  			  "		[tx-frames-high N]\n"
>  			  "		[sample-interval N]\n"
> +			  "		[cqe-mode-rx on|off]\n"
> +			  "		[cqe-mode-tx on|off]\n"
>  	},
>  	{
>  		.opts	= "-g|--show-ring",
> diff --git a/netlink/coalesce.c b/netlink/coalesce.c
> index 75922a9..762d0e3 100644
> --- a/netlink/coalesce.c
> +++ b/netlink/coalesce.c
> @@ -66,6 +66,9 @@ int coalesce_reply_cb(const struct nlmsghdr *nlhdr, void *data)
>  	show_u32(tb[ETHTOOL_A_COALESCE_TX_USECS_HIGH], "tx-usecs-high: ");
>  	show_u32(tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH], "tx-frame-high: ");
>  	putchar('\n');
> +	show_bool("rx", "CQE mode RX: %s  ",
> +		  tb[ETHTOOL_A_COALESCE_USE_CQE_MODE_RX]);
> +	show_bool("tx", "TX: %s\n", tb[ETHTOOL_A_COALESCE_USE_CQE_MODE_TX]);
>  
>  	return MNL_CB_OK;
>  }
> @@ -226,6 +229,18 @@ static const struct param_parser scoalesce_params[] = {
>  		.handler	= nl_parse_direct_u32,
>  		.min_argc	= 1,
>  	},
> +	{
> +		.arg		= "cqe-mode-rx",
> +		.type		= ETHTOOL_A_COALESCE_USE_CQE_MODE_RX,
> +		.handler	= nl_parse_u8bool,
> +		.min_argc	= 1,
> +	},
> +	{
> +		.arg		= "cqe-mode-tx",
> +		.type		= ETHTOOL_A_COALESCE_USE_CQE_MODE_TX,
> +		.handler	= nl_parse_u8bool,
> +		.min_argc	= 1,
> +	},
>  	{}
>  };
>  
> -- 
> 2.8.1
> 

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