netdev - Re: [PATCH net 3/4] virtio-net: create a helper to check received mergeable buffer's length

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Message-ID: <8f0927bf-dc2f-4a20-887a-6d8529623dd7@gmail.com>
Date: Thu, 26 Jun 2025 22:37:38 +0700
From: Bui Quang Minh <minhquangbui99@...il.com>
To: Jason Wang <jasowang@...hat.com>
Cc: netdev@...r.kernel.org, "Michael S. Tsirkin" <mst@...hat.com>,
 Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, Eugenio Pérez
 <eperezma@...hat.com>, Andrew Lunn <andrew+netdev@...n.ch>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>,
 Jesper Dangaard Brouer <hawk@...nel.org>,
 John Fastabend <john.fastabend@...il.com>,
 Stanislav Fomichev <sdf@...ichev.me>, virtualization@...ts.linux.dev,
 linux-kernel@...r.kernel.org, bpf@...r.kernel.org
Subject: Re: [PATCH net 3/4] virtio-net: create a helper to check received
 mergeable buffer's length

On 6/26/25 09:38, Jason Wang wrote:
> On Thu, Jun 26, 2025 at 12:10 AM Bui Quang Minh
> <minhquangbui99@...il.com> wrote:
>> Currently, we have repeated code to check the received mergeable buffer's
>> length with allocated size. This commit creates a helper to do that and
>> converts current code to use it.
>>
>> Signed-off-by: Bui Quang Minh <minhquangbui99@...il.com>
> I think it would be better to introduce this as patch 1, so a
> mergeable XDP path can use that directly.
>
> This will have a smaller changeset.

I'm just concerned that it might make backporting the fix harder because 
the fix depends on this refactor and this refactor touches some function 
that may create conflict.

Thanks,
Quang Minh.