On Sun, Aug 27, 2023 at 06:34:09PM +1000, Duncan Roe wrote: > On Tue, Aug 22, 2023 at 08:09:53PM +0200, Alessandro Vesely wrote: > > On Mon 21/Aug/2023 21:10:35 +0200 Pablo Neira Ayuso wrote: > > > On Mon, Aug 21, 2023 at 07:18:46PM +0200, Alessandro Vesely wrote: > > > > On Sun 20/Aug/2023 23:41:43 +0200 Pablo Neira Ayuso wrote: > > > > > On Fri, Aug 18, 2023 at 12:56:38PM +0200, Alessandro Vesely wrote: > > > > > > [...] > > It seems a buffer can contain several packets. Is that related with the > > queue maxlen? > > > man 7 netlink will tell you that netlink messages may be batched. This is > straightforward to observe in a libnetfilter_log program under gdb. > > However libnetfilter_queue programs never get batched netlink messages. So the > callback isn't strictly necessary but it would mean extra code to special-case > libnetfilter_queue (among all the other netfilter libraries) so it's been left > there. The "several packets" in this case refers to Linux GRO/GSO.
