linux-kernel - Re: [PATCH net-next v2 2/2] bonding: combine netlink and console error messages

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Date:   Tue, 10 Aug 2021 20:27:01 -0700
From:   Joe Perches <joe@...ches.com>
To:     Jonathan Toppins <jtoppins@...hat.com>, netdev@...r.kernel.org,
        leon@...nel.org
Cc:     Jay Vosburgh <j.vosburgh@...il.com>,
        Veaceslav Falico <vfalico@...il.com>,
        Andy Gospodarek <andy@...yhouse.net>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v2 2/2] bonding: combine netlink and console
 error messages

On Tue, 2021-08-10 at 22:53 -0400, Jonathan Toppins wrote:
> There seems to be no reason to have different error messages between
> netlink and printk. It also cleans up the function slightly.
> 
> Signed-off-by: Jonathan Toppins <jtoppins@...hat.com>
> ---
> 
> Notes:
>     v2:
>      - changed the printks to reduce object code slightly
>      - emit a single error message based on if netlink or sysfs is
>        attempting to enslave
>      - rebase on top of net-next/master and convert additional
>        instances added by XDP additions
> 
>  drivers/net/bonding/bond_main.c | 69 ++++++++++++++++++---------------
>  1 file changed, 37 insertions(+), 32 deletions(-)
> 
> diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
[]
> @@ -1725,6 +1725,20 @@ void bond_lower_state_changed(struct slave *slave)
>  	netdev_lower_state_changed(slave->dev, &info);
>  }
> 
> +#define BOND_NL_ERR(bond_dev, extack, errmsg) do {		\
> +	if (extack)						\
> +		NL_SET_ERR_MSG(extack, errmsg);			\
> +	else							\
> +		netdev_err(bond_dev, "Error: %s\n", errmsg);	\
> +} while (0)
> +
> +#define SLAVE_NL_ERR(bond_dev, slave_dev, extack, errmsg) do {		\
> +	if (extack)							\
> +		NL_SET_ERR_MSG(extack, errmsg);				\
> +	else								\
> +		slave_err(bond_dev, slave_dev, "Error: %s\n", errmsg);	\
> +} while (0)

Ideally both of these would be static functions and not macros.