Hi all, Thunderbolt/USB4 host controllers support full end-to-end flow control that prevents dropping packets if there are not enough hardware receive buffers. So far it has not been enabled for the networking driver yet but this series changes that. There is one snag though: the second generation (Intel Falcon Ridge) had a bug that needs special quirk to get it working. We had that in the early stages of the Thunderbolt/USB4 driver but it got dropped because it was not needed at the time. Now we add it back as a quirk for the host controller (NHI). The first patch of this series is a bugfix that I'm planning to push for v6.0-rc. Rest are v6.1 material. This also includes a patch that shows the XDomain link type in sysfs the same way we do for USB4 routers and updates the networking driver module description. Mika Westerberg (5): net: thunderbolt: Enable DMA paths only after rings are enabled thunderbolt: Show link type for XDomain connections too thunderbolt: Add back Intel Falcon Ridge end-to-end flow control workaround net: thunderbolt: Enable full end-to-end flow control net: thunderbolt: Update module description with mention of USB4 drivers/net/thunderbolt.c | 62 +++++++++++++++++++++------------ drivers/thunderbolt/nhi.c | 49 ++++++++++++++++++++++---- drivers/thunderbolt/tb.c | 8 ++--- drivers/thunderbolt/tb.h | 2 +- drivers/thunderbolt/usb4.c | 8 +++-- drivers/thunderbolt/usb4_port.c | 2 ++ include/linux/thunderbolt.h | 2 ++ 7 files changed, 96 insertions(+), 37 deletions(-) -- 2.35.1
