diff options
| -rw-r--r-- | include/netlink/route/class.h | 3 | ||||
| -rw-r--r-- | lib/route/class.c | 32 | ||||
| -rw-r--r-- | libnl-route-3.sym | 1 |
3 files changed, 36 insertions, 0 deletions
diff --git a/include/netlink/route/class.h b/include/netlink/route/class.h index e73b60a..3833339 100644 --- a/include/netlink/route/class.h +++ b/include/netlink/route/class.h @@ -31,6 +31,9 @@ extern int rtnl_class_alloc_cache(struct nl_sock *, int, extern struct rtnl_class * rtnl_class_get(struct nl_cache *, int, uint32_t); +extern struct rtnl_class * + rtnl_class_get_by_parent(struct nl_cache *, int, uint32_t); + extern struct rtnl_qdisc * rtnl_class_leaf_qdisc(struct rtnl_class *, struct nl_cache *); diff --git a/lib/route/class.c b/lib/route/class.c index 56ad1d8..0b9a235 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; +} + /** @} */ /** diff --git a/libnl-route-3.sym b/libnl-route-3.sym index dc1d9ed..2bdd20a 100644 --- a/libnl-route-3.sym +++ b/libnl-route-3.sym @@ -1064,6 +1064,7 @@ global: libnl_3_5 { global: + rtnl_class_get_by_parent; rtnl_cls_cache_set_tc_params; rtnl_netem_set_delay_distribution_data; rtnl_link_is_geneve; |