diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/route/class.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/lib/route/class.c b/lib/route/class.c index 56ad1d86..0b9a235c 100644 --- a/lib/route/class.c +++ b/lib/route/class.c @@ -367,6 +367,38 @@ struct rtnl_class *rtnl_class_get(struct nl_cache *cache, int ifindex, return NULL; } +/** + * Search class by interface index and parent + * @arg cache Traffic class cache + * @arg ifindex Interface index + * @arg parent Handle of parent qdisc + * + * Searches a class cache previously allocated with rtnl_class_alloc_cache() + * and searches for a class matching the interface index and parent qdisc. + * + * The reference counter is incremented before returning the class, therefore + * the reference must be given back with rtnl_class_put() after usage. + * + * @return pointer to class inside the cache or NULL if no match was found. + */ +struct rtnl_class *rtnl_class_get_by_parent(struct nl_cache *cache, int ifindex, + uint32_t parent) +{ + struct rtnl_class *class; + + if (cache->c_ops != &rtnl_class_ops) + return NULL; + + nl_list_for_each_entry(class, &cache->c_items, ce_list) { + if (class->c_parent == parent && class->c_ifindex == ifindex) { + nl_object_get((struct nl_object *) class); + return class; + } + } + + return NULL; +} + /** @} */ /** |