netdev - Re: [PATCHv3 net] bonding: fix ICMPv6 header handling when receiving IPv6 messages

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Date:   Wed, 16 Nov 2022 14:34:06 +0800
From:   Hangbin Liu <liuhangbin@...il.com>
To:     "David S . Miller" <davem@...emloft.net>
Cc:     Jay Vosburgh <jay.vosburgh@...onical.com>,
        Eric Dumazet <eric.dumazet@...il.com>, netdev@...r.kernel.org,
        Jakub Kicinski <kuba@...nel.org>,
        Jonathan Toppins <jtoppins@...hat.com>,
        Paolo Abeni <pabeni@...hat.com>,
        David Ahern <dsahern@...il.com>, Liang Li <liali@...hat.com>,
        David Ahern <dsahern@...nel.org>
Subject: Re: [PATCHv3 net] bonding: fix ICMPv6 header handling when receiving
 IPv6 messages

On Wed, Nov 09, 2022 at 01:48:11PM -0800, Eric Dumazet wrote:
> On Wed, Nov 9, 2022 at 1:23 PM Jay Vosburgh <jay.vosburgh@...onical.com> wrote:
> >
> > Eric Dumazet <edumazet@...gle.com> wrote:
> > >Quite frankly I would simply use
> > >
> > >if (pskb_may_pull(skb, sizeof(struct ipv6hdr) + sizeof(struct icmp6hdr))
> > > instead of  skb_header_pointer()
> > >because chances are high we will need the whole thing in skb->head later.
> >
> >         Well, it was set up this way with skb_header_pointer() instead
> > of pskb_may_pull() by you in de063b7040dc ("bonding: remove packet
> > cloning in recv_probe()") so the bonding rx_handler wouldn't change or
> > clone the skb.  Now, I'm not sure if we should follow your advice to go
> > against your advice.
> 
> Ah... I forgot about this, thanks for reminding me it ;)

Hi David,

The patch state[1] is Changes Requested, but I think Eric has no object on this
patch now. Should I keep waiting, or re-send the patch?

[1] https://patchwork.kernel.org/project/netdevbpf/patch/20221109014018.312181-1-liuhangbin@gmail.com/

Thanks
Hangbin