uAPI doesn't define structs for the SNMP counters, just enums to index
them as arrays. Switch to the same representation in the spec. C codegen
will soon need all the struct types to actually exist.
Note that the existing definition was broken, anyway, as the first
member should be the number of counters reported.
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20250506194101.696272-4-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 
         type: u32
   -
     name: ifla-icmp6-stats
-    type: struct
-    members:
+    enum-name:
+    type: enum
+    entries:
+      -
+        name: num
       -
         name: inmsgs
-        type: u64
       -
         name: inerrors
-        type: u64
       -
         name: outmsgs
-        type: u64
       -
         name: outerrors
-        type: u64
       -
         name: csumerrors
-        type: u64
       -
         name: ratelimithost
-        type: u64
   -
     name: ifla-inet6-stats
-    type: struct
-    members:
+    enum-name:
+    type: enum
+    entries:
+      -
+        name: num
       -
         name: inpkts
-        type: u64
       -
         name: inoctets
-        type: u64
       -
         name: indelivers
-        type: u64
       -
         name: outforwdatagrams
-        type: u64
       -
         name: outpkts
-        type: u64
       -
         name: outoctets
-        type: u64
       -
         name: inhdrerrors
-        type: u64
       -
         name: intoobigerrors
-        type: u64
       -
         name: innoroutes
-        type: u64
       -
         name: inaddrerrors
-        type: u64
       -
         name: inunknownprotos
-        type: u64
       -
         name: intruncatedpkts
-        type: u64
       -
         name: indiscards
-        type: u64
       -
         name: outdiscards
-        type: u64
       -
         name: outnoroutes
-        type: u64
       -
         name: reasmtimeout
-        type: u64
       -
         name: reasmreqds
-        type: u64
       -
         name: reasmoks
-        type: u64
       -
         name: reasmfails
-        type: u64
       -
         name: fragoks
-        type: u64
       -
         name: fragfails
-        type: u64
       -
         name: fragcreates
-        type: u64
       -
         name: inmcastpkts
-        type: u64
       -
         name: outmcastpkts
-        type: u64
       -
         name: inbcastpkts
-        type: u64
       -
         name: outbcastpkts
-        type: u64
       -
         name: inmcastoctets
-        type: u64
       -
         name: outmcastoctets
-        type: u64
       -
         name: inbcastoctets
-        type: u64
       -
         name: outbcastoctets
-        type: u64
       -
         name: csumerrors
-        type: u64
       -
         name: noectpkts
-        type: u64
       -
         name: ect1-pkts
-        type: u64
       -
         name: ect0-pkts
-        type: u64
       -
         name: cepkts
-        type: u64
       -
         name: reasm-overlaps
-        type: u64
   - name: br-boolopt-multi
     type: struct
     members:
       -
         name: stats
         type: binary
-        struct: ifla-inet6-stats
+        sub-type: u64
       -
         name: mcast
         type: binary
       -
         name: icmp6stats
         type: binary
-        struct: ifla-icmp6-stats
+        sub-type: u64
       -
         name: token
         type: binary