On Mon, 2012-08-20 at 22:21 +0200, Michal Kubecek wrote: > On Mon, Aug 20, 2012 at 05:06:39PM +0800, Cong Wang wrote: > > doesn't work. I think we probably can save the struct net pointer in > > struct netns_frags during inet_frags_init_net(), so that container_of() > > can be eliminated. > > This would work but one would have to check carefully that the pointer > is always set to an usable value. Or we could just add a flag indicating > whether the structure is embedded (and if it is not, use init_net). > Another approach was suggested in the patchworks discussion: add a > special namespace for IPv6 conntrack fragment handling. I think your former solution is easier, I will try it. > > > Thanks for testing! I tried to test it too, but seems I can't trigger a > > defragment. Any hints? > > I used netfilter on a computer between source and destination of the > packets (generated with "ping6 -s 3000"): > > ip6tables -A FORWARD -o ... -m frag --fragid 0:0xFFFFFFFF --fraglast -j DROP > > The --fragid condition is needed to work around a bug in iptables (if > frag module is loaded and there is no --fragid, only packets with zero > fragment id match - patch for this is already in git). On the target, > packet is defragmented automatically, by default by the "normal" code, > with nf_conntrack_ipv6 module by the conntrack code. > > Setting > > echo 5 >/proc/sys/net/ipv6/ip6frag_time > echo 5 >/proc/sys/net/netfilter/nf_conntrack_frag6_timeout > > on target also helps. > Great! This helps! Thanks! -- 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
