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    SubjectRe: Fwd: Possible bug in net/ipv4/route.c?
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    Le lundi 05 juillet 2010 à 20:06 +0800, Herbert Xu a écrit :
    > Eric Dumazet <eric.dumazet@gmail.com> wrote:
    > >
    > >> 2) The layer using skb->cb[] should clear this area after use and
    > >> before handing the skb to another layer. Ubicom should modify the
    > >> driver to clear the skb->cb[] area before sending it up the line.
    > >>
    > >
    > > This is the right option. If you use one word in cb[], only your driver
    > > knows how to clear it efficiently.
    >
    > Absolutely not! No protocol stack should rely on an external skb
    > having a zero cb.
    >

    Why do we clear full 48 bytes skb->cb[] in skb_alloc(), if no protocol
    stack should rely it being zero ?



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