On 08/24/15 at 05:32pm, Joe Stringer wrote: > Add support for using conntrack helpers to assist protocol detection. > The new OVS_CT_ATTR_HELPER attribute of the CT action specifies a helper > to be used for this connection. If no helper is specified, then helpers > will be automatically applied as per the sysctl configuration of > net.netfilter.nf_conntrack_helper. > > The helper may be specified as part of the conntrack action, eg: > ct(helper=ftp). Initial packets for related connections should be > committed to allow later packets for the flow to be considered > established. > > Example ovs-ofctl flows allowing FTP connections from ports 1->2: > in_port=1,tcp,action=ct(helper=ftp,commit),2 > in_port=2,tcp,ct_state=-trk,action=ct(recirc) > in_port=2,tcp,ct_state=+trk-new+est,action=1 > in_port=2,tcp,ct_state=+trk+rel,action=1 Not subject to this patch but we may want to revisit the syntax of the state flags. It's neatly compressed like this but ct_state=untracked ct_state=related might be more readable. The +trk should be implicit for anything !untracked > Signed-off-by: Joe Stringer <joestringer@xxxxxxxxxx> Acked-by: Thomas Graf <tgraf@xxxxxxx> -- 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
