On Wed, 2007-03-28 at 16:28 -0700, Mark Huth wrote: > Steve Wise wrote: > > Hey all, > > > > I have netpoll question. How does netpoll work with MSI/X, NAPI, and > > nics that setup multiple RSS style receive queues for a single port? > > >From what I can tell, if you're doing something like netdump using > > netpoll for IO, then you might never process incoming packets that get > > posted to the rx queues not associated with the main netdevice structure > > because netpoll only calls the poll() function for the main netdev > > struct. Not the dummy netdevs setup for multiple rx queues. > > > > Is this the case or am I confused? > > > > Thanks, > > > > > > Steve > You are correct. Netpoll needs a bit of work, especially on the receive > side, for multi-queue and some other possible problems related to taking > locks when the system is frozen. If I get some time soon, I'm going to > propose an overhaul to address some of these issues that show up in the > kgdboe and netdump cases. > > Mark Huth
Hey Mark, What are your thoughts on how to implement this? Scrub every softnet_data queue->poll_list for every cpu? Or perhaps its better to have a new function ptr off the netdev that sez "poll all rx queues"? Steve. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
