Re: [PATCH net-next v12 1/5] net: Introduce generic failover module

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On Thu, 24 May 2018 09:55:13 -0700
Sridhar Samudrala <sridhar.samudrala@xxxxxxxxx> wrote:

> diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
> index 03ed492c4e14..0f4ba52b641d 100644
> --- a/include/linux/netdevice.h
> +++ b/include/linux/netdevice.h
> @@ -1421,6 +1421,8 @@ struct net_device_ops {
>   *	entity (i.e. the master device for bridged veth)
>   * @IFF_MACSEC: device is a MACsec device
>   * @IFF_NO_RX_HANDLER: device doesn't support the rx_handler hook
> + * @IFF_FAILOVER: device is a failover master device
> + * @IFF_FAILOVER_SLAVE: device is lower dev of a failover master device
>   */
>  enum netdev_priv_flags {
>  	IFF_802_1Q_VLAN			= 1<<0,
> @@ -1450,6 +1452,8 @@ enum netdev_priv_flags {
>  	IFF_PHONY_HEADROOM		= 1<<24,
>  	IFF_MACSEC			= 1<<25,
>  	IFF_NO_RX_HANDLER		= 1<<26,
> +	IFF_FAILOVER			= 1<<27,
> +	IFF_FAILOVER_SLAVE		= 1<<28,
>  };

Why is FAILOVER any different than other master/slave relationships.
I don't think you need to take up precious netdev flag bits for this.
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