netdev - Re: [PATCH net] cls_rsvp: fix rsvp

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Message-ID: <CAM_iQpUYOLkZu9hn9+_XbMDTY5Q0aOq6qLrDt9PD0zh8kNPw1A@mail.gmail.com>
Date:   Sat, 1 Feb 2020 11:21:55 -0800
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        Eric Dumazet <eric.dumazet@...il.com>,
        syzbot <syzkaller@...glegroups.com>
Subject: Re: [PATCH net] cls_rsvp: fix rsvp_policy

On Fri, Jan 31, 2020 at 3:27 PM 'Eric Dumazet' via syzkaller
<syzkaller@...glegroups.com> wrote:
>
> NLA_BINARY can be confusing, since .len value represents
> the max size of the blob.
>
> cls_rsvp really wants user space to provide long enough data
> for TCA_RSVP_DST and TCA_RSVP_SRC attributes.

To clarify: for NLA_UNSPEC (0), len is the minimum length.

Acked-by: Cong Wang <xiyou.wangcong@...il.com>