On Thu, Feb 13, 2025 at 11:04:52AM -0800, Jakub Kicinski wrote: > On Thu, 13 Feb 2025 10:14:02 -0800 Breno Leitao wrote: > > > The problem is a bit nasty, on a closer look. We don't know if netcons > > > is called in IRQ context or not. How about we add an hrtimer to netdevsim, > > > schedule it to fire 5usec in the future instead of scheduling NAPI > > > immediately? We can call napi_schedule() from a timer safely. > > > > > > Unless there's another driver which schedules NAPI from xmit. > > > Then we'd need to try harder to fix this in netpoll. > > > veth does use NAPI on xmit but it sets IFF_DISABLE_NETPOLL already. > > > > Just to make sure I follow the netpoll issue. What would you like to fix > > in netpoll exactly? > > Nothing in netpoll, the problem is that netdevsim calls napi_schedule Hm, you said the following above: Then we'd need to try harder to fix this in netpoll. I was curious about the meaning of that statement? Thanks --breno
