linux-kernel - Re: [PATCH net-next 3/5] devlink: Allow set specific ops callbacks dynamically

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Date:   Wed, 29 Sep 2021 13:38:23 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Leon Romanovsky <leonro@...dia.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Andrew Lunn <andrew@...n.ch>, Ariel Elior <aelior@...vell.com>,
        Bin Luo <luobin9@...wei.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Coiby Xu <coiby.xu@...il.com>,
        Derek Chickles <dchickles@...vell.com>, drivers@...sando.io,
        Eric Dumazet <eric.dumazet@...il.com>,
        Felix Manlunas <fmanlunas@...vell.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Geetha sowjanya <gakula@...vell.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        GR-everest-linux-l2@...vell.com, GR-Linux-NIC-Dev@...vell.com,
        hariprasad <hkelam@...vell.com>,
        Ido Schimmel <idosch@...dia.com>,
        intel-wired-lan@...ts.osuosl.org,
        Ioana Ciornei <ioana.ciornei@....com>,
        Jerin Jacob <jerinj@...vell.com>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Jiri Pirko <jiri@...dia.com>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        Linu Cherian <lcherian@...vell.com>,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
        linux-rdma@...r.kernel.org, linux-staging@...ts.linux.dev,
        Manish Chopra <manishc@...vell.com>,
        Michael Chan <michael.chan@...adcom.com>,
        Moshe Shemesh <moshe@...dia.com>, netdev@...r.kernel.org,
        oss-drivers@...igine.com,
        Richard Cochran <richardcochran@...il.com>,
        Saeed Mahameed <saeedm@...dia.com>,
        Salil Mehta <salil.mehta@...wei.com>,
        Satanand Burla <sburla@...vell.com>,
        Shannon Nelson <snelson@...sando.io>,
        Shay Drory <shayd@...dia.com>,
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        Subbaraya Sundeep <sbhatta@...vell.com>,
        Sunil Goutham <sgoutham@...vell.com>,
        Taras Chornyi <tchornyi@...vell.com>,
        Tariq Toukan <tariqt@...dia.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        UNGLinuxDriver@...rochip.com, Vadym Kochan <vkochan@...vell.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Yisen Zhuang <yisen.zhuang@...wei.com>
Subject: Re: [PATCH net-next 3/5] devlink: Allow set specific ops callbacks
 dynamically

On Wed, Sep 29, 2021 at 01:16:37PM +0300, Leon Romanovsky wrote:
> +void devlink_set_ops(struct devlink *devlink, struct devlink_ops *ops)
> +{
> +	struct devlink_ops *dev_ops = devlink->ops;
> +
> +	WARN_ON(!devlink_reload_actions_valid(ops));
> +
> +#define SET_DEVICE_OP(ptr, name)                                               \
> +	do {                                                                   \
> +		if (ops->name)                                                 \

Could you make "ops" a parameter of the macro instead of hard coding it?

regards,
dan carpenter

> +			if (!((ptr)->name))				       \
> +				(ptr)->name = ops->name;                       \
> +	} while (0)
> +
> +	/* Keep sorted */
> +	SET_DEVICE_OP(dev_ops, reload_actions);
> +	SET_DEVICE_OP(dev_ops, reload_down);
> +	SET_DEVICE_OP(dev_ops, reload_limits);
> +	SET_DEVICE_OP(dev_ops, reload_up);
> +
> +#undef SET_DEVICE_OP
> +}
> +EXPORT_SYMBOL_GPL(devlink_set_ops);