Filter refactoring: dropped the recursion from the interpreter

This is a major change of how the filters are interpreted. If everything
works how it should, it should not affect you unless you are hacking the
filters themselves.

Anyway, this change should make a huge improvement in the filter performance
as previous benchmarks showed that our major problem lies in the
recursion itself.

There are also some changes in nest and protocols, related mostly to
spreading const declarations throughout the whole BIRD and also to
refactored dynamic attribute definitions. The need of these came up
during the whole work and it is too difficult to split out these
not-so-related changes.

1 files changed, 3 insertions, 1 deletions

diff --git a/nest/cmds.h b/nest/cmds.h
index 4cf8fb1b..194a9d7f 100644
--- a/nest/cmds.h
+++ b/nest/cmds.h
@@ -16,4 +16,6 @@ struct f_inst;
 void cmd_show_status(void);
 void cmd_show_symbols(struct sym_show_data *sym);
 void cmd_show_memory(void);
-void cmd_eval(struct f_inst *expr);
+
+struct f_line;
+void cmd_eval(const struct f_line *expr);