netdev - Re: [PATCHv2 net-next] Bonding: add per-port priority for failover re-selection

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Date:   Tue, 14 Jun 2022 20:52:58 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Hangbin Liu <liuhangbin@...il.com>
Cc:     netdev@...r.kernel.org, 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>,
        Jonathan Toppins <jtoppins@...hat.com>,
        Paolo Abeni <pabeni@...hat.com>,
        David Ahern <dsahern@...il.com>
Subject: Re: [PATCHv2 net-next] Bonding: add per-port priority for failover
 re-selection

On Wed, 15 Jun 2022 11:29:34 +0800
Hangbin Liu <liuhangbin@...il.com> wrote:

> diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
> index 5a6f44455b95..41b3244747fa 100644
> --- a/drivers/net/bonding/bond_netlink.c
> +++ b/drivers/net/bonding/bond_netlink.c
> @@ -27,6 +27,7 @@ static size_t bond_get_slave_size(const struct net_device *bond_dev,
>  		nla_total_size(sizeof(u16)) +	/* IFLA_BOND_SLAVE_AD_AGGREGATOR_ID */
>  		nla_total_size(sizeof(u8)) +	/* IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE */
>  		nla_total_size(sizeof(u16)) +	/* IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE */
> +		nla_total_size(sizeof(s32)) +	/* IFLA_BOND_SLAVE_PRIO */
>  		0;
>  }

Why the choice to make it signed? It would be clearer as unsigned value.
Also, using full 32 bits seems like overkill.