+/** \brief Request all or filtered subset of sw_interface_details
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param sw_if_index - index of the interface to dump info on, 0 or ~0 if on all
+ TODO: Support selecting only index==0 when CSIT is ready.
+ @param name_filter_valid - 1 if requesting a filtered subset of records else 0
+ if name filter is set as valid, sw_if_index value is ignored and all interfaces are examined
+ @param name_filter - interface name substring filter. Eg. loop1 returns [loop1, loop10]
+*/