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Add support for getting and deleting queueing classes.

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olc 2009-07-20 15:56:30 +02:00 • committed by Thomas Graf
parent e0af9e1802
commit 2ead49f0d5
2 changed files with 83 additions and 0 deletions
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5
include/netlink/route/class.h
View file

@ -28,6 +28,7 @@ extern struct rtnl_class * rtnl_class_alloc(void);
extern void rtnl_class_put(struct rtnl_class *);
extern int rtnl_class_alloc_cache(struct nl_sock *, int,
struct nl_cache **);
extern struct rtnl_class *rtnl_class_get(struct nl_cache *, int, uint32_t);
/* leaf qdisc access */
extern struct rtnl_qdisc * rtnl_class_leaf_qdisc(struct rtnl_class *,
@ -38,6 +39,10 @@ extern int rtnl_class_build_add_request(struct rtnl_class *, int,
extern int rtnl_class_add(struct nl_sock *, struct rtnl_class *,
int);
extern int rtnl_class_build_delete_request(struct rtnl_class *,
struct nl_msg **);
extern int rtnl_class_delete(struct nl_sock *, struct rtnl_class *);
extern void rtnl_class_set_ifindex(struct rtnl_class *, int);
extern int rtnl_class_get_ifindex(struct rtnl_class *);
extern void rtnl_class_set_handle(struct rtnl_class *, uint32_t);

78
lib/route/class.c
View file

@ -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 = {