Messages in this thread | | | Subject | Re: Fwd: Possible bug in net/ipv4/route.c? | From | Eric Dumazet <> | Date | Mon, 05 Jul 2010 14:59:14 +0200 |
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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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