From: David S. Miller Date: Tue, 26 Jun 2018 13:53:29 +0000 (+0900) Subject: Merge branch 'lan78xx-minor-fixes' X-Git-Tag: v4.19~677^2~39 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=094bdaddf129417ee5e5d885d2fe76a5adfada0f;p=platform%2Fkernel%2Flinux-rpi3.git Merge branch 'lan78xx-minor-fixes' Dave Stevenson says: ==================== lan78xx minor fixes This is a small set of patches for the Microchip LAN78xx chip, as used in the Raspberry Pi 3B+. The main debug/discussion was on https://github.com/raspberrypi/linux/issues/2458 Initial symptoms were that VLANs were very unreliable. A couple of things were found: - firstly that the hardware timeout value set failed to take into account the VLAN tag, so a full MTU packet would be timed out. - second was that regular checksum failures were being reported. Disabling checksum offload confirmed that the checksums were valid, and further experimentation identified that it was only if the VLAN tags were being passed through to the kernel that there were issues. The hardware supports VLAN filtering and tag stripping, therefore those have been implemented (much of the work was already done), and the driver drops back to s/w checksums should the choice be made not to use the h/w VLAN stripping. ==================== Signed-off-by: David S. Miller --- 094bdaddf129417ee5e5d885d2fe76a5adfada0f