netdev - Re: [PATCH net v2] ipv6: Handle race in addrconf_dad

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Message-ID: <68b04493-1792-e6b9-e248-365f889d0964@gmail.com>
Date:   Wed, 2 Oct 2019 16:11:50 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Eric Dumazet <eric.dumazet@...il.com>,
        David Ahern <dsahern@...il.com>,
        David Ahern <dsahern@...nel.org>, davem@...emloft.net,
        jakub.kicinski@...ronome.com
Cc:     netdev@...r.kernel.org, rajendra.dendukuri@...adcom.com
Subject: Re: [PATCH net v2] ipv6: Handle race in addrconf_dad_work



On 10/2/19 3:36 PM, Eric Dumazet wrote:
> 
> 
> On 10/2/19 3:33 PM, David Ahern wrote:

>>
>> I flipped to IF_READY based on addrconf_ifdown and idev checks seeming
>> more appropriate.
>>
> 

Note that IF_READY is set in ipv6_add_dev() if all these conditions are true :

if (netif_running(dev) && addrconf_link_ready(dev))
     ndev->if_flags |= IF_READY;

So maybe in my setup IF_READY is set later from a notifier event ?