netdev - Re: [PATCH net-next v4 4/5] net: hdlc_fr: Do skb_reset_mac_header for skbs received on normal PVC devices

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Date:   Fri, 30 Oct 2020 17:28:07 -0400
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Xie He <xie.he.0141@...il.com>
Cc:     Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Network Development <netdev@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Krzysztof Halasa <khc@...waw.pl>
Subject: Re: [PATCH net-next v4 4/5] net: hdlc_fr: Do skb_reset_mac_header for
 skbs received on normal PVC devices

On Fri, Oct 30, 2020 at 4:08 PM Xie He <xie.he.0141@...il.com> wrote:
>
> On Fri, Oct 30, 2020 at 9:30 AM Willem de Bruijn
> <willemdebruijn.kernel@...il.com> wrote:
> >
> > Acked-by: Willem de Bruijn <willemb@...gle.com>
>
> Thanks for your ack!
>
> > Should this go to net if a bugfix though?
>
> Yes, this should theoretically be a bug fix. But I didn't think this
> was an important fix, because af_packet.c already had workarounds for
> this issue for all drivers that didn't have header_ops. We can
> separate this patch to make it go to "net" though, but I'm afraid that
> this will cause merging conflicts between "net" and "net-next".

Yes, it might require holding off the other patches until net is
merged into net-next.

Packet sockets are likely not the only way these packets are received?
It changes mac_len as computed in __netif_receive_skb_core.

If there is no real bug that is fixed, net-next is fine.