netdev - Re: [PATCH net-next 02/18] ipv6: Mark dead nexthops with appropriate flags

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Date:   Sun, 7 Jan 2018 09:54:03 -0700
From:   David Ahern <dsahern@...il.com>
To:     Ido Schimmel <idosch@...lanox.com>, netdev@...r.kernel.org
Cc:     davem@...emloft.net, roopa@...ulusnetworks.com,
        nicolas.dichtel@...nd.com, weiwan@...gle.com, kafai@...com,
        yoshfuji@...ux-ipv6.org, mlxsw@...lanox.com
Subject: Re: [PATCH net-next 02/18] ipv6: Mark dead nexthops with appropriate
 flags

On 1/7/18 3:45 AM, Ido Schimmel wrote:
> When a netdev is put administratively down or unregistered all the
> nexthops using it as their nexthop device should be marked with the
> 'dead' and 'linkdown' flags.
> 
> Currently, when a route is dumped its nexthop device is tested and the
> flags are set accordingly. A similar check is performed during route
> lookup.
> 
> Instead, we can simply mark the nexthops based on netdev events and
> avoid checking the netdev's state during route dump and lookup.
> 
> Signed-off-by: Ido Schimmel <idosch@...lanox.com>
> ---
>  net/ipv6/route.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 

Acked-by: David Ahern <dsahern@...il.com>