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| author | Ben Pfaff <blp@nicira.com> | 2010-10-28 16:18:20 -0700 |
|---|---|---|
| committer | Ben Pfaff <blp@nicira.com> | 2010-11-15 15:09:00 -0800 |
| commit | 5ecc9d8156062191f0d53ba3dc2c5776c962b7c5 (patch) | |
| tree | bbfb4ab4e2fbed07975948ea50b77b21a1309e68 /lib/classifier.h | |
| parent | 796d0648c1f9da07b758211b78528eaa5fa3c32d (diff) | |
| download | openvswitch-5ecc9d8156062191f0d53ba3dc2c5776c962b7c5.tar.gz | |
classifier: Add functions and macros for iteration, and use them in ofproto.
This is much more convenient in practice than being forced to use a
callback function.
Diffstat (limited to 'lib/classifier.h')
| -rw-r--r-- | lib/classifier.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/classifier.h b/lib/classifier.h index 1dc9edc62..220a3395e 100644 --- a/lib/classifier.h +++ b/lib/classifier.h @@ -120,5 +120,36 @@ void classifier_for_each_match(const struct classifier *, cls_cb_func *, void *aux); struct cls_rule *classifier_find_rule_exactly(const struct classifier *, const struct cls_rule *); + +/* Iteration. */ + +struct cls_cursor { + const struct classifier *cls; + const struct cls_table *table; + const struct cls_rule *target; +}; + +void cls_cursor_init(struct cls_cursor *, const struct classifier *, + const struct cls_rule *match); +struct cls_rule *cls_cursor_first(struct cls_cursor *); +struct cls_rule *cls_cursor_next(struct cls_cursor *, struct cls_rule *); + +#define CLS_CURSOR_FOR_EACH(RULE, MEMBER, CURSOR) \ + for ((RULE) = OBJECT_CONTAINING(cls_cursor_first(CURSOR), \ + RULE, MEMBER); \ + &(RULE)->MEMBER != NULL; \ + (RULE) = OBJECT_CONTAINING(cls_cursor_next(CURSOR, \ + &(RULE)->MEMBER), \ + RULE, MEMBER)) + +#define CLS_CURSOR_FOR_EACH_SAFE(RULE, NEXT, MEMBER, CURSOR) \ + for ((RULE) = OBJECT_CONTAINING(cls_cursor_first(CURSOR), \ + RULE, MEMBER); \ + (&(RULE)->MEMBER != NULL \ + ? ((NEXT) = OBJECT_CONTAINING(cls_cursor_next(CURSOR, \ + &(RULE)->MEMBER), \ + RULE, MEMBER), 1) \ + : 0); \ + (RULE) = (NEXT)) #endif /* classifier.h */ |