netdev - Re: [PATCH net-next v11 3/5] net: Introduce net

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Date:   Tue, 22 May 2018 10:59:40 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     Sridhar Samudrala <sridhar.samudrala@...el.com>
Cc:     mst@...hat.com, stephen@...workplumber.org, davem@...emloft.net,
        netdev@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        virtio-dev@...ts.oasis-open.org, jesse.brandeburg@...el.com,
        alexander.h.duyck@...el.com, kubakici@...pl, jasowang@...hat.com,
        loseweigh@...il.com, aaron.f.brown@...el.com,
        anjali.singhai@...el.com
Subject: Re: [PATCH net-next v11 3/5] net: Introduce net_failover driver

Tue, May 22, 2018 at 04:06:19AM CEST, sridhar.samudrala@...el.com wrote:
>The net_failover driver provides an automated failover mechanism via APIs
>to create and destroy a failover master netdev and mananges a primary and
>standby slave netdevs that get registered via the generic failover
>infrastructure.
>
>The failover netdev acts a master device and controls 2 slave devices. The
>original paravirtual interface gets registered as 'standby' slave netdev and
>a passthru/vf device with the same MAC gets registered as 'primary' slave
>netdev. Both 'standby' and 'failover' netdevs are associated with the same
>'pci' device. The user accesses the network interface via 'failover' netdev.
>The 'failover' netdev chooses 'primary' netdev as default for transmits when
>it is available with link up and running.
>
>This can be used by paravirtual drivers to enable an alternate low latency
>datapath. It also enables hypervisor controlled live migration of a VM with
>direct attached VF by failing over to the paravirtual datapath when the VF
>is unplugged.
>
>Signed-off-by: Sridhar Samudrala <sridhar.samudrala@...el.com>

[...]

>+
>+The net_failover driver provides an automated failover mechanism via APIs
>+to create and destroy a failover master netdev and mananges a primary and

s/mananges/manages/