On Tue, 12 Dec 2017 11:00:38 -0800 Ed Swierk <eswi...@skyportsystems.com> wrote:
> On Tue, Dec 12, 2017 at 10:34 AM, Stephen Hemminger > <step...@networkplumber.org> wrote: > > Why not add to netdevsim rather than cluttering up a normal driver > > with test support. We just pulled a bunch of test stuff out of dummy > > for the same reason. > > My test setup to trigger an openvswitch conntrack issue > (https://marc.info/?l=linux-netdev&m=151309548725627) involves a lot > of moving parts: > > [netns-a: vetha1] - [vetha0] - [ovsbr0] - [vethb0] - [netns-b: vethb1] > > with nc client and server in netns-a and -b, and tweaks like turning > off tcp_timestamps to make sure the packets in the TCP stream are > small enough to reproduce the problem. A simpler, less fragile test > setup would be valuable, especially if it ends up as an automated > regression test. > > Could netdevsim be useful for that? Are there any existing tests > producing TCP traffic that might serve as an example? > > --Ed Maybe add a netem impairment that does padding?
