netdev - Re: [PATCH v3 1/1] powerpc/vnic: Extend "failover pending" window

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Message-ID: <20201102165628.2fead733@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net>
Date:   Mon, 2 Nov 2020 16:56:28 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Sukadev Bhattiprolu <sukadev@...ux.ibm.com>
Cc:     netdev@...r.kernel.org, Dany Madden <drt@...ux.vnet.ibm.com>,
        Lijun Pan <ljp@...ux.ibm.com>,
        Brian King <brking@...ux.vnet.ibm.com>
Subject: Re: [PATCH v3 1/1] powerpc/vnic: Extend "failover pending" window

On Fri, 30 Oct 2020 10:07:11 -0700 Sukadev Bhattiprolu wrote:
> Commit 5a18e1e0c193b introduced the 'failover_pending' state to track
> the "failover pending window" - where we wait for the partner to become
> ready (after a transport event) before actually attempting to failover.
> i.e window is between following two events:
> 
>         a. we get a transport event due to a FAILOVER
> 
>         b. later, we get CRQ_INITIALIZED indicating the partner is
>            ready  at which point we schedule a FAILOVER reset.
> 
> and ->failover_pending is true during this window.
> 
> If during this window, we attempt to open (or close) a device, we pretend
> that the operation succeded and let the FAILOVER reset path complete the
> operation.

Applied, thanks!