ieee802-eth-if: missing documentation for Ethernet counters

[jovatn]

Supported Ethernet counters as YANG references can extracted from ieee-802-ethernet-interface.yang and infix-ethernet, see the statistics branch below.

PC:~/repos/infix/src/confd/yang $ pyang -f tree [email protected] infix-ethernet-interface.yang 
module: ieee802-ethernet-interface

  augment /if:interfaces/if:interface:
    +--rw ethernet
       +--rw auto-negotiation!
       |  +--rw enable?   boolean
       +--rw duplex?             duplex-type
       +--rw speed?              eth-if-speed-type
       +--ro statistics
          +--ro frame
             +--ro in-total-octets?                yang:counter64
             +--ro in-frames?                      yang:counter64
             +--ro in-multicast-frames?            yang:counter64
             +--ro in-broadcast-frames?            yang:counter64
             +--ro in-error-fcs-frames?            yang:counter64
             +--ro in-error-undersize-frames?      yang:counter64
             +--ro in-error-oversize-frames?       yang:counter64
             +--ro in-error-mac-internal-frames?   yang:counter64
             +--ro out-frames?                     yang:counter64
             +--ro out-multicast-frames?           yang:counter64
             +--ro out-broadcast-frames?           yang:counter64
             +--ro infix-eth:out-good-octets?      yang:counter64
             +--ro infix-eth:in-good-octets?       yang:counter64
PC:~/repos/infix/src/confd/yang $ 

The page https://github.com/kernelkit/infix/blob/main/doc/eth-counters.md describes how Infix maps these yang leafs to Linux/Ethtool counters, however, some of the supported counters lack mapping descriptions.

            +--ro in-error-oversize-frames?       yang:counter64
            +--ro in-error-mac-internal-frames?   yang:counter64
            +--ro infix-eth:out-good-octets?      yang:counter64
            +--ro infix-eth:in-good-octets?       yang:counter64