diff options
author | olc <olc@satem.(none)> | 2009-07-20 13:56:30 (GMT) |
---|---|---|
committer | Thomas Graf <tgr@lsx.localdomain> | 2009-09-02 19:10:48 (GMT) |
commit | 2ead49f0d5873628156e50dfed7da14619a4172d (patch) | |
tree | f0fad488c20a805c6c27db6be53b7b3849b3cb7c /lib | |
parent | e0af9e1802d4f0c49e838ff94a187f590eb9e2cd (diff) | |
download | libnl-2ead49f0d5873628156e50dfed7da14619a4172d.zip libnl-2ead49f0d5873628156e50dfed7da14619a4172d.tar.gz libnl-2ead49f0d5873628156e50dfed7da14619a4172d.tar.bz2 |
Add support for getting and deleting queueing classes.
Diffstat (limited to 'lib')
-rw-r--r-- | lib/route/class.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/lib/route/class.c b/lib/route/class.c index 2bfd7dd..ddf2d2e 100644 --- a/lib/route/class.c +++ b/lib/route/class.c @@ -157,6 +157,60 @@ int rtnl_class_add(struct nl_sock *sk, struct rtnl_class *class, int flags) return wait_for_ack(sk); } +int rtnl_class_build_delete_request(struct rtnl_class *class, + struct nl_msg **result) +{ + struct nl_msg *msg; + struct tcmsg tchdr; + int required = TCA_ATTR_IFINDEX | TCA_ATTR_PARENT; + + if ((class->ce_mask & required) != required) + BUG(); + + msg = nlmsg_alloc_simple(RTM_DELTCLASS, 0); + if (!msg) + return -NLE_NOMEM; + + tchdr.tcm_family = AF_UNSPEC; + tchdr.tcm_handle = class->c_handle; + tchdr.tcm_parent = class->c_parent; + tchdr.tcm_ifindex = class->c_ifindex; + if (nlmsg_append(msg, &tchdr, sizeof(tchdr), NLMSG_ALIGNTO) < 0) { + nlmsg_free(msg); + return -NLE_MSGSIZE; + } + + *result = msg; + return 0; +} + +/** + * Delete a class + * @arg sk Netlink socket. + * @arg class class to delete + * + * Builds a netlink message by calling rtnl_class_build_delete_request(), + * sends the request to the kernel and waits for the ACK to be + * received and thus blocks until the request has been processed. + * + * @return 0 on success or a negative error code + */ +int rtnl_class_delete(struct nl_sock *sk, struct rtnl_class *class) +{ + struct nl_msg *msg; + int err; + + if ((err = rtnl_class_build_delete_request(class, &msg)) < 0) + return err; + + err = nl_send_auto_complete(sk, msg); + nlmsg_free(msg); + if (err < 0) + return err; + + return wait_for_ack(sk); +} + /** @} */ /** @@ -196,6 +250,30 @@ int rtnl_class_alloc_cache(struct nl_sock *sk, int ifindex, return 0; } +/** + * Look up class by its handle in the provided cache + * @arg cache class cache + * @arg ifindex interface the class is attached to + * @arg handle class handle + * @return pointer to class inside the cache or NULL if no match was found. + */ +struct rtnl_class *rtnl_class_get(struct nl_cache *cache, int ifindex, + uint32_t handle) +{ + 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_handle == handle && class->c_ifindex == ifindex) { + nl_object_get((struct nl_object *) class); + return class; + } + } + return NULL; +} + /** @} */ static struct nl_cache_ops rtnl_class_ops = { |