netdev - Re: [Patch net v2] mlx5: fixup checksum for short ethernet frame padding

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CALzJLG-NQsxmVgc0naKSkLg4Vg5RYA==4eZJ08fmFho_F=JM5g@mail.gmail.com>
Date:   Thu, 29 Nov 2018 16:03:52 -0800
From:   Saeed Mahameed <saeedm@....mellanox.co.il>
To:     Cong Wang <xiyou.wangcong@...il.com>
Cc:     Eric Dumazet <edumazet@...gle.com>,
        Linux Netdev List <netdev@...r.kernel.org>,
        Saeed Mahameed <saeedm@...lanox.com>
Subject: Re: [Patch net v2] mlx5: fixup checksum for short ethernet frame padding

On Wed, Nov 28, 2018 at 4:05 PM Cong Wang <xiyou.wangcong@...il.com> wrote:
>
> On Wed, Nov 28, 2018 at 3:57 PM Cong Wang <xiyou.wangcong@...il.com> wrote:
> > But again, I kinda feel the hardware already does the sanity check,
> > otherwise we have much more serious trouble in mlx5e_lro_update_hdr()
> > which parses into TCP header.
> >
>
> While we are on this page, mlx5e_lro_update_hdr() incorrectly assumes
> TCP header is located right after struct iphdr, which is wrong if we could
> have IP options on this path.
>
> It could the hardware which already verified this corner case though.

yes HW will not do LRO in case of ip options, so no problem in
mlx5e_lro_update_hdr