From: Remi Pommarel repk@triplefau.lt Date: Sun, 8 Mar 2020 10:25:56 +0100
ACS (auto PAD/FCS stripping) removes FCS off 802.3 packets (LLC) so that there is no need to manually strip it for such packets. The enhanced DMA descriptors allow to flag LLC packets so that the receiving callback can use that to strip FCS manually or not. On the other hand, normal descriptors do not support that.
Thus in order to not truncate LLC packet ACS should be disabled when using normal DMA descriptors.
Fixes: 47dd7a540b8a0 ("net: add support for STMicroelectronics Ethernet controllers.") Cc: stable@vger.kernel.org Signed-off-by: Remi Pommarel repk@triplefau.lt
Please don't CC: stable for networking fixes as per the netdev FAQ.
Applied and queued up for -stable, thank you.