netdev - Re: [PATCH net v3 1/2] ipv6: Dump route exceptions too in rt6_dump

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Message-ID: <91d0b4a4-46ba-5dd0-e387-c9a0ba195506@gmail.com>
Date:   Mon, 10 Jun 2019 15:47:16 -0600
From:   David Ahern <dsahern@...il.com>
To:     Stefano Brivio <sbrivio@...hat.com>
Cc:     David Miller <davem@...emloft.net>, 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 v3 1/2] ipv6: Dump route exceptions too in
 rt6_dump_route()

On 6/10/19 3:45 PM, Stefano Brivio wrote:
> Indeed, we don't have to add much: just make this work for IPv4 too,
> honour NLM_F_MATCH, and skip filtering (further optimisation) on
> NLM_F_DUMP_FILTERED in iproute2 (ip neigh already uses that).

you can't. Not all of iproute2's filter options are handled by the
kernel (and nor should they be).