netdev - Re: [RFC bpf-next 1/2] net: bridge: add unstable br_fdb_find_port_from

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Date:   Wed, 26 Jan 2022 17:38:09 +0530
From:   Kumar Kartikeya Dwivedi <memxor@...il.com>
To:     Lorenzo Bianconi <lorenzo@...nel.org>
Cc:     Nikolay Aleksandrov <nikolay@...dia.com>, bpf@...r.kernel.org,
        netdev@...r.kernel.org, lorenzo.bianconi@...hat.com,
        davem@...emloft.net, kuba@...nel.org, ast@...nel.org,
        daniel@...earbox.net, dsahern@...nel.org,
        komachi.yoshiki@...il.com, brouer@...hat.com, toke@...hat.com,
        andrii.nakryiko@...il.com, Roopa Prabhu <roopa@...dia.com>,
        "bridge@...ts.linux-foundation.org" 
        <bridge@...ts.linux-foundation.org>,
        Ido Schimmel <idosch@...sch.org>
Subject: Re: [RFC bpf-next 1/2] net: bridge: add unstable
 br_fdb_find_port_from_ifindex helper

On Wed, Jan 26, 2022 at 04:57:42PM IST, Lorenzo Bianconi wrote:
> > On 24/01/2022 19:20, Lorenzo Bianconi wrote:
> > > Similar to bpf_xdp_ct_lookup routine, introduce
> > > br_fdb_find_port_from_ifindex unstable helper in order to accelerate
> > > linux bridge with XDP. br_fdb_find_port_from_ifindex will perform a
> > > lookup in the associated bridge fdb table and it will return the
> > > output ifindex if the destination address is associated to a bridge
> > > port or -ENODEV for BOM traffic or if lookup fails.
> > >
> > > Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
> > > ---
> > >  net/bridge/br.c         | 21 +++++++++++++
> > >  net/bridge/br_fdb.c     | 67 +++++++++++++++++++++++++++++++++++------
> > >  net/bridge/br_private.h | 12 ++++++++
> > >  3 files changed, 91 insertions(+), 9 deletions(-)
> > >
> >
> > Hi Lorenzo,
>
> Hi Nikolay,
>
> thx for the review.
>
> [...]
>
> I guess at the time I sent the series it was just in bpf-next but now it should
> be in net-next too.
> I do not think we need a unregister here.
> @Kumar: agree?
>

Yes, no need to call unregister (hence there is no unregister).

> > [...]



--
Kartikeya