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Date:   Fri, 19 Mar 2021 11:13:25 +0000
To:     Paolo Abeni <pabeni@redhat.com>
From:   Alexander Lobakin <alobakin@pm.me>
Cc:     Alexander Lobakin <alobakin@pm.me>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
        Kirill Tkhai <ktkhai@virtuozzo.com>,
        Bartosz Golaszewski <bgolaszewski@baylibre.com>,
        Leon Romanovsky <leon@kernel.org>,
        Eric Dumazet <edumazet@google.com>, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org
Reply-To: Alexander Lobakin <alobakin@pm.me>
Subject: Re: [PATCH net-next 2/4] gro: add combined call_gro_receive() + INDIRECT_CALL_INET() helper
Message-ID: <20210319111315.3069-1-alobakin@pm.me>
In-Reply-To: <1ebd301832ff86cc414dd17eee0b3dfc91ff3c08.camel@redhat.com>
References: <20210318184157.700604-1-alobakin@pm.me> <20210318184157.700604-3-alobakin@pm.me> <1ebd301832ff86cc414dd17eee0b3dfc91ff3c08.camel@redhat.com>
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From: Paolo Abeni <pabeni@redhat.com>
Date: Fri, 19 Mar 2021 11:53:42 +0100

> Hello,

Hi!

> On Thu, 2021-03-18 at 18:42 +0000, Alexander Lobakin wrote:
> > call_gro_receive() is used to limit GRO recursion, but it works only
> > with callback pointers.
> > There's a combined version of call_gro_receive() + INDIRECT_CALL_2()
> > in <net/inet_common.h>, but it doesn't check for IPv6 modularity.
>
> AFAICS, ip6_offload is builtin even when IPv6 is a module, so the above
> should not be needed.

Aww, you are right. I overlooked that since dev_gro_receive() still
use INDIRECT_CALL_INET(), though all GRO callbacks were made
built-in.

Seems like more code can be optimized, thanks!

> Cheers,
>
> Paolo

Al