On Tue, 16 Jan 2024 17:18:30 +0100 (CET) Romain Gantois wrote: > > which makes it sound like bit 5 will not be set for a Ethernet II frame > > with unsupported IP payload, or not an IP frame. Does the bit mean other > > things in different descriptor formats? > > The description of this bit in my datasheet is: > > ``` > b5 FT Frame Type > When set, this bit indicates that the Receive Frame is an Ethernet-type frame > (the Length/Type field is greater than or equal to 1,536). When this bit is > reset, it indicates that the received frame is an IEEE 802.3 frame. This bit is > not valid for Runt frames less than 14 bytes > ``` > > There is no mention of a more subtle check to detect non-IP Ethernet II frames. > I ran some tests on my hardware and EDSA-tagged packets consistently come in > with status 0b100, so the MAC sets the frame type bit even for frames that don't > have an IP ethertype. Boo, who designed this thing :( v6 is good to go in then, thank you for investigating and testing!
