On Wednesday, July 29, 2015 3:39:45 PM, "Yang Hongyang" <yan...@cn.fujitsu.com> wrote: > > Hi Thomas, > > On 07/29/2015 08:56 PM, Thomas Huth wrote: > > On Wednesday, July 29, 2015 12:51:44 PM, > > "Yang Hongyang" <yan...@cn.fujitsu.com> wrote: > >> > >> I do not take this as v2 because the design of this has been changed, > >> and code is rewritten. according to thread: > >> http://lists.nongnu.org/archive/html/qemu-devel/2015-07/msg05445.html > >> > >> This patch add a new object netfilter, capture all network packets. > >> Also implement a netbuffer based on this object. > >> the "buffer" netfilter could be used by VM FT solutions like > >> Macrocheckpointing, to buffer/release packets. Or to simulate > >> packet delay. > >> > >> Usage: > >> -netdev tap,id=bn0 > >> -netfilter buffer,id=f0,netdev=bn0,interval=1000 > >> -device e1000,netdev=bn0 > > > > What if I want to use multiple filters at once? Is there a way to > > determine the order in which the filters are run through? > > The filters are in an QTAILQ list, so it's order is what appears > first will be first. for example: > -netfilter dump,... > -netfilter buffer,... > > dump will be the first filter. > > > > >> dynamically add/remove netfilters: > >> netfilter_add buffer,id=f0,netdev=bn0,interval=1000 > >> netfilter_del f0 > > > > Same here ... let's assume there are already two filters - can I > > somehow add a third filter inbetween the two? > > It's not possiable in this series, but it can be supported later, > we can add an order option to the netfilter, so that it can be > the order whatever you want.
Ok, thanks for the clarification. You're right, that's something that also can be added later if needed. Thomas
