netdev - Re: [PATCH net-next v6 07/11] ipv6/route: Change return code of rt6_dump

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Date:   Thu, 20 Jun 2019 08:17:21 -0600
From:   David Ahern <dsahern@...il.com>
To:     Stefano Brivio <sbrivio@...hat.com>,
        David Miller <davem@...emloft.net>
Cc:     Jianlin Shi <jishi@...hat.com>, Wei Wang <weiwan@...gle.com>,
        Martin KaFai Lau <kafai@...com>,
        Eric Dumazet <edumazet@...gle.com>,
        Matti Vaittinen <matti.vaittinen@...rohmeurope.com>,
        netdev@...r.kernel.org
Subject: Re: [PATCH net-next v6 07/11] ipv6/route: Change return code of
 rt6_dump_route() for partial node dumps

On 6/19/19 5:59 PM, Stefano Brivio wrote:
> In the next patch, we are going to add optional dump of exceptions to
> rt6_dump_route().
> 
> Change the return code of rt6_dump_route() to accomodate partial node
> dumps: we might dump multiple routes per node, and might be able to dump
> only a given number of them, so fib6_dump_node() will need to know how
> many routes have been dumped on partial dump, to restart the dump from the
> point where it was interrupted.
> 
> Note that fib6_dump_node() is the only caller and already handles all
> non-negative return codes as success: those become -1 to signal that we're
> done with the node. If we fail, return 0, as we were unable to dump the
> single route in the node, but we're not done with it.
> 
> Signed-off-by: Stefano Brivio <sbrivio@...hat.com>
> ---
> v6: New patch
> 
>  net/ipv6/ip6_fib.c |  2 +-
>  net/ipv6/route.c   | 16 ++++++++++------
>  2 files changed, 11 insertions(+), 7 deletions(-)
> 

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