On Sun, Oct 16, 2016 at 04:53:42PM +0300, Jouni Malinen wrote: > While getting a new Ethertype for hostapd purposes would be kind of > convenient, I'm not exactly fond of the $3095 registration fee.. > Subtyping an existing Ethertype would likely be a more supportable > approach. It looks like there is already a standard defined mechanism for assigning identifiers for prototyping and vendor-specific protocol development needs. While this is couple of octets longer and does not get the convenience of being able to filter frames simply based on Ethertype in a socket, this may be the most convenient approach to use here since I can define new values based on an OUI 00:13:74 that is managed based on hostap.git commits. IEEE Std 802-2014, Clause 9.2.4 defines an OUI Extended EtherType 88-B7. I could use that design to assign the following identifier for hostapd/wpa_supplicant uses: EtherType: 88 B7 (OUI Extended EtherType) Protocol identifier: 00 13 74 00 01 (OUI 00:13:74 followed by two octet vendor-specific subtype 0x0001 that I'd assign to hostap.git purposes) This would then be followed by a hostap.git specific subtype and we could assign this as a single octet where 0x00 would be used to replace the current FT pull/resp/push messages that misuse the IEEE 802.11r defined Ethertype. Another subtype, say 0x01, could be assigned for the network steering feature. Or alternatively, we can use the same subtype for both if that is more convenient. In any case, there would be sufficient flexibility to define whatever header needs we have for AP-to-AP communication with hostapd. As a more complete example, the FT R0KH-R1KH pull message could start with this (showed with IEEE 802.3 MAC header): Destination MAC Address (6 octets) Source MAC Address (6 octets) EtherType = 0x88 0xB7 (end of IEEE 802.3 MAC header) Protocol identifier = 0x00 0x13 0x74 0x00 0x01 hostap.git subtype = 0x00 (FT-AP-AP-protocol) <TLVs> -- Jouni Malinen PGP id EFC895FA _______________________________________________ Hostap mailing list Hostap@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/hostap
