diff options
Diffstat (limited to 'filter/f-inst.h')
| -rw-r--r-- | filter/f-inst.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/filter/f-inst.h b/filter/f-inst.h index bfa163fc..df45f88e 100644 --- a/filter/f-inst.h +++ b/filter/f-inst.h @@ -17,6 +17,7 @@ #include "conf/conf.h" #include "filter/filter.h" #include "filter/data.h" +#include "lib/buffer.h" #include "lib/flowspec.h" /* Flags for instructions */ @@ -50,6 +51,41 @@ static inline struct f_line *f_linearize(const struct f_inst *root) void f_dump_line(const struct f_line *, uint indent); + +/* Recursive iteration over filter instructions */ + +struct filter_iterator { + BUFFER_(const struct f_line *) lines; +}; + +void f_add_lines(const struct f_line_item *what, struct filter_iterator *fit); + +#define FILTER_ITERATE_INIT(fit, filter, pool) \ + ({ \ + BUFFER_INIT((fit)->lines, (pool), 32); \ + BUFFER_PUSH((fit)->lines) = (filter)->root; \ + }) + +#define FILTER_ITERATE(fit, fi) ({ \ + const struct f_line *fl_; \ + while (!BUFFER_EMPTY((fit)->lines)) \ + { \ + BUFFER_POP((fit)->lines); \ + fl_ = (fit)->lines.data[(fit)->lines.used]; \ + for (uint i_ = 0; i_ < fl_->len; i_++) \ + { \ + const struct f_line_item *fi = &fl_->items[i_]; \ + f_add_lines(fi, (fit)); + +#define FILTER_ITERATE_END } } }) + +#define FILTER_ITERATE_CLEANUP(fit) \ + ({ \ + mb_free((fit)->lines.data); \ + memset((fit), 0, sizeof(struct filter_iterator)); \ + }) + + struct filter *f_new_where(struct f_inst *); static inline struct f_dynamic_attr f_new_dynamic_attr(u8 type, enum f_type f_type, uint code) /* Type as core knows it, type as filters know it, and code of dynamic attribute */ { return (struct f_dynamic_attr) { .type = type, .f_type = f_type, .ea_code = code }; } /* f_type currently unused; will be handy for static type checking */ |