On Thu, 16 Dec 2010 18:53:06 +0100 Eric Dumazet <eric.dumazet@xxxxxxxxx> wrote: > [PATCH v3 net-next-2.6] netfilter: x_tables: dont block BH while reading counters > > Using "iptables -L" with a lot of rules might have a too big BH latency. > Jesper mentioned ~6 ms and worried of frame drops. > > Switch to a per_cpu seqcount scheme, so that taking a snapshot of > counters doesnt need to block BH (for this cpu, but also other cpus). > > Reported-by: Jesper Dangaard Brouer <hawk@xxxxxxx> > Signed-off-by: Eric Dumazet <eric.dumazet@xxxxxxxxx> Acked-by: Stephen Hemminger <shemminger@xxxxxxxxxx> -- -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
