linux-kernel - Re: [PATCH net-next 2/3] bonding: use correct return value

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Message-ID: <a3a133dc-3616-4aed-9b44-4f9e74a5eda3@blackwall.org>
Date: Wed, 16 Oct 2024 10:32:58 +0300
From: Nikolay Aleksandrov <razor@...ckwall.org>
To: Hangbin Liu <liuhangbin@...il.com>, netdev@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>, Alexei Starovoitov <ast@...nel.org>,
 Daniel Borkmann <daniel@...earbox.net>,
 Jesper Dangaard Brouer <hawk@...nel.org>,
 John Fastabend <john.fastabend@...il.com>, Jiri Pirko <jiri@...nulli.us>,
 Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
 Lorenzo Bianconi <lorenzo@...nel.org>, Andrii Nakryiko <andriin@...com>,
 Jussi Maki <joamaki@...il.com>, Jay Vosburgh <jv@...sburgh.net>,
 Andy Gospodarek <andy@...yhouse.net>, Jonathan Corbet <corbet@....net>,
 Andrew Lunn <andrew+netdev@...n.ch>, linux-doc@...r.kernel.org,
 linux-kernel@...r.kernel.org, bpf@...r.kernel.org
Subject: Re: [PATCH net-next 2/3] bonding: use correct return value

On 16/10/2024 06:16, Hangbin Liu wrote:
> When a slave already has an XDP program loaded, the correct return value
> should be -EEXIST instead of -EOPNOTSUPP.
> 
> Fixes: 9e2ee5c7e7c3 ("net, bonding: Add XDP support to the bonding driver")
> Signed-off-by: Hangbin Liu <liuhangbin@...il.com>
> ---
>  drivers/net/bonding/bond_main.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
> index f0f76b6ac8be..6887a867fe8b 100644
> --- a/drivers/net/bonding/bond_main.c
> +++ b/drivers/net/bonding/bond_main.c
> @@ -5699,7 +5699,7 @@ static int bond_xdp_set(struct net_device *dev, struct bpf_prog *prog,
>  		if (dev_xdp_prog_count(slave_dev) > 0) {
>  			SLAVE_NL_ERR(dev, slave_dev, extack,
>  				     "Slave has XDP program loaded, please unload before enslaving");
> -			err = -EOPNOTSUPP;
> +			err = -EEXIST;
>  			goto err;
>  		}
> 

Reviewed-by: Nikolay Aleksandrov <razor@...ckwall.org>