Stefan Berger<stefanb@linux.vnet.ibm.com> wrote on 10/17/2011 09:07:12 AM:
On 10/12/2011 03:50 PM, David L Stevens wrote:
This patch adds the internal capability to add rules to existing chains instead of using temporary chains and to generate placeholders
for
chains that are referenced without generating a rule for them immediately. Finally, it includes variable matching for filter instantiation (i.e., instantiate only when a given variable is present in a filter, or only when it is not).
Following the above I am not sure what this will be used for as part of this extension. This is used to add rules to existing chains when a new IP address is discovered (i.e., a DHCP ACK from a server occurs). The existing code builds the entire chain as a temporary chain and then swaps it in, which is only appropriate at start-up. For DHCP snooping, we want to add and remove rules that reference "IP" using a particular value (the address for the ACK or lease expiration) without affecting other rules that don't reference IP or have a different address value. "removeRules" was already there, but "addRules" was not. Yes, then I understood this correctly. See the other mails regarding the
On 10/17/2011 01:23 PM, David Stevens wrote: problems I am seeing with it. If there was a way to figure out at what position to insert a rule into an existing chain, i.e. at position 5, rather than always at the end, we could use this addRules() call, otherwise I find it very limiting. Stefan
+-DLS