/**
* Allocate address cache and fill in all configured addresses
* @arg handle Netlink handle.
*
* Allocates a new address cache, initializes it properly and updates it
* to include all addresses currently configured in the kernel.
*
* @note Free the memory after usage.
* @return Newly allocated cache or NULL if an error occured.
*/
struct nl_cache *rtnl_addr_alloc_cache(struct nl_handle *handle)
{
struct nl_cache *cache;
cache = nl_cache_alloc_from_ops(&rtnl_addr_ops);
if (!cache)
return NULL;
if (nl_cache_update(handle, cache) < 0) {
nl_cache_free(cache);
return NULL;
}
return cache;
}
/**
* Build a neighbour cache including all neighbours currently configured in the kernel.
* @arg handle netlink handle
*
* Allocates a new neighbour cache, initializes it properly and updates it
* to include all neighbours currently configured in the kernel.
*
* @note The caller is responsible for destroying and freeing the
* cache after using it. (nl_cache_destroy_and_free())
* @return The new cache or NULL if an error occured.
*/
struct nl_cache * rtnl_neigh_build_cache(struct nl_handle *handle)
{
struct nl_cache * cache = calloc(1, sizeof(*cache));
if (cache == NULL)
return NULL;
cache->c_type = RTNL_NEIGH;
cache->c_type_size = sizeof(struct rtnl_neigh);
cache->c_ops = &rtnl_neigh_ops;
if (nl_cache_update(handle, cache) < 0) {
free(cache);
return NULL;
}
return cache;
}
