netdev - Re: [PATCH net-next 13/18] ipv6: Export sernum update function

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Date:   Sun, 7 Jan 2018 10:04:43 -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 13/18] ipv6: Export sernum update function

On 1/7/18 3:45 AM, Ido Schimmel wrote:
> We are going to allow dead routes to stay in the FIB tree (e.g., when
> they are part of a multipath route, directly connected route with no
> carrier) and revive them when their nexthop device gains carrier or when
> it is put administratively up.
> 
> This is equivalent to the addition of the route to the FIB tree and we
> should therefore take care of updating the sernum of all the parent
> nodes of the node where the route is stored. Otherwise, we risk sockets
> caching and using sub-optimal dst entries.
> 
> Export the function that performs the above, so that it could be invoked
> from fib6_ifup() later on.
> 
> Signed-off-by: Ido Schimmel <idosch@...lanox.com>
> ---
>  include/net/ip6_fib.h |  1 +
>  net/ipv6/ip6_fib.c    | 11 ++++++++---
>  2 files changed, 9 insertions(+), 3 deletions(-)
> 

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