From: Herbert Xu <[EMAIL PROTECTED]> Date: Mon, 17 Jul 2006 08:03:50 +1000
> The thing is qdiscs using cb means that this method of clearing cb > before netif_rx doesn't work anymore. > > In particular, even if loopback clears cb before calling netif_rx, > some qdisc could come along between netif_rx and ip_rcv and put > stuff in the cb. > > The same thing can happen to any NIC in fact, as long as we allow > qdiscs to use the cb area without clearing it, ip_rcv needs to > clear it itself. Ok, I'm convinced that IPv4 has to clear this out and shouldn't assume it's contents are anything but garbage. > With a little bit of effort we should be able to get away with > clearing just optlen. Whether this effort is worthwhile I don't > know :) It all sits in the same cacheline, so probably not. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
