On Thu, Jul 30, 2026 at 03:14:33PM -0700, Jakub Kicinski wrote: > On Thu, 30 Jul 2026 14:39:37 -0700 Bobby Eshleman wrote: > > Poking around, it looks like 231.1.167.0 and above should support > > everything, so fw should be okay AFAICT. > > > > Looks like the config is missing CONFIG_NET_DEVMEM and CONFIG_UDMABUF? > > Ah, damn, you're right. I grepped for DEVMEM and didn't look closely on > a hit. Turns out there's a non-NET DEVMEM, too. > > Could you send a patch to add the missing config options to > tools/testing/selftests/drivers/net/hw/config ? > > Can be separate or part of this series, doesn't matter.
So NET_DEVMEM and UDMABUF both depend on DMA_SHARED_BUFFER, which is not user-settable (selected by DMABUF_HEAPS and SYNC_FILE, for example). Pretty sure UDMABUF is supposed to select it, not depend on. Documentation/driver-api/dma-buf.rst says any "exporter" should select it, so I'm going to send that patch over there. Meanwhile, do we want drivers/net/hw/config to workaround by carrying something like SYNC_FILE or DMABUF_HEAPS, or wait and see about the udmabuf kconfig change? Best, Bobby
