- Add new DB_DEFINE_TABLE and DB_DECLARE_TABLE macros to define new
command tables. DB_DECLARE_TABLE is intended for use in headers
similar to MALLOC_DECLARE and SYSCTL_DECL.
DB_DEFINE_TABLE takes three arguments, the name of the parent table,
the command name, and the name of the table itself, e.g.
DB_DEFINE_TABLE(show, foo, show_foo) defines a new "show foo" table.
- DB_TABLE_COMMAND, DB_TABLE_COMMAND_FLAGS, DB_TABLE_ALIAS, and
DB_ALIAS_FLAGS allow new commands and aliases to be defined. These
are similar to the existing DB_COMMAND, etc. except that they take
an initial argument giving the name of the parent table, e.g.:
DB_TABLE_COMMAND(show_foo, bar, db_show_foo_bar)
defines a new "show foo bar" command.
This provides a cleaner interface than the ad-hoc use of internal
macros like _DB_SET that was required previously (e.g. in cxgbe(4)).
This retires DB_FUNC macro as well as the internal _DB_FUNC macro.
Reviewed by: melifaro, kib, markj
Differential Revision: https://reviews.freebsd.org/D40819
884eaacd24