linux-kernel - Re: [PATCH net v3] bonding: fix feature flag setting at init time

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Message-ID: <20201203085001.4901c97f@kicinski-fedora-pc1c0hjn.DHCP.thefacebook.com>
Date:   Thu, 3 Dec 2020 08:50:01 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Jarod Wilson <jarod@...hat.com>
Cc:     linux-kernel@...r.kernel.org, Ivan Vecera <ivecera@...hat.com>,
        Jay Vosburgh <j.vosburgh@...il.com>,
        Veaceslav Falico <vfalico@...il.com>,
        Andy Gospodarek <andy@...yhouse.net>,
        "David S. Miller" <davem@...emloft.net>,
        Thomas Davis <tadavis@....gov>, netdev@...r.kernel.org
Subject: Re: [PATCH net v3] bonding: fix feature flag setting at init time

On Wed,  2 Dec 2020 19:43:57 -0500 Jarod Wilson wrote:
>  	bond_dev->hw_features |= NETIF_F_GSO_ENCAP_ALL | NETIF_F_GSO_UDP_L4;
> -#ifdef CONFIG_XFRM_OFFLOAD
> -	bond_dev->hw_features |= BOND_XFRM_FEATURES;
> -#endif /* CONFIG_XFRM_OFFLOAD */
>  	bond_dev->features |= bond_dev->hw_features;
>  	bond_dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX;
>  #ifdef CONFIG_XFRM_OFFLOAD
> -	/* Disable XFRM features if this isn't an active-backup config */
> -	if (BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP)
> -		bond_dev->features &= ~BOND_XFRM_FEATURES;
> +	bond_dev->hw_features |= BOND_XFRM_FEATURES;
> +	/* Only enable XFRM features if this is an active-backup config */
> +	if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP)
> +		bond_dev->features |= BOND_XFRM_FEATURES;
>  #endif /* CONFIG_XFRM_OFFLOAD */

This makes no functional change, or am I reading it wrong?