static void
_j4status_nl_cache_change(struct nl_cache *cache, struct nl_object *object, int something, void *user_data)
{
J4statusPluginContext *self = user_data;
J4statusNlSection *section;
if ( cache == self->link_cache )
{
struct rtnl_link *link = nl_object_priv(object);
section = g_hash_table_lookup(self->sections, GINT_TO_POINTER(rtnl_link_get_ifindex(link)));
if ( section == NULL )
return;
g_debug("Link cache update: %p = %s", object, rtnl_link_get_ifalias(link));
if ( section->link != link )
{
nl_object_get(object);
rtnl_link_put(section->link);
section->link = link;
}
}
else if ( cache == self->addr_cache )
{
struct rtnl_addr *addr = nl_object_priv(object);
section = g_hash_table_lookup(self->sections, GINT_TO_POINTER(rtnl_addr_get_ifindex(addr)));
if ( section == NULL )
return;
g_debug("Addr cache update: %p = %d", object, rtnl_addr_get_ifindex(addr));
GList **list;
switch ( rtnl_addr_get_family(addr) )
{
case AF_INET:
list = §ion->ipv4_addresses;
break;
case AF_INET6:
list = §ion->ipv6_addresses;
break;
default:
/* Not supported */
return;
}
if ( g_list_find_custom(*list, addr,_j4status_nl_address_compare) != NULL )
/* Already got it */
return;
nl_object_get(object);
*list = g_list_prepend(*list, addr);
}
else
g_assert_not_reached();
_j4status_nl_section_update(section);
}
void nl_bridge::set_bridge_interface(rtnl_link *bridge) {
assert(bridge);
assert(std::string("bridge").compare(rtnl_link_get_type(bridge)) == 0);
this->bridge = bridge;
nl_object_get(OBJ_CAST(bridge));
}
/**
* Add object to hashtable
* @arg ht Hashtable
* @arg obj Object to add
*
* Adds `obj` to the hashtable. Object type must support hashing, otherwise all
* objects will be added to the chain `0`.
*
* @note The reference counter of the object is incremented.
*
* @return 0 on success or a negative error code
* @retval -NLE_EXIST Identical object already present in hashtable
*/
int nl_hash_table_add(nl_hash_table_t *ht, struct nl_object *obj)
{
nl_hash_node_t *node;
uint32_t key_hash;
nl_object_keygen(obj, &key_hash, ht->size);
node = ht->nodes[key_hash];
while (node) {
if (nl_object_identical(node->obj, obj)) {
NL_DBG(2, "Warning: Add to hashtable found duplicate...\n");
return -NLE_EXIST;
}
node = node->next;
}
NL_DBG (5, "adding cache entry of obj %p in table %p, with hash 0x%x\n",
obj, ht, key_hash);
node = malloc(sizeof(nl_hash_node_t));
if (!node)
return -NLE_NOMEM;
nl_object_get(obj);
node->obj = obj;
node->key = key_hash;
node->key_size = sizeof(uint32_t);
node->next = ht->nodes[key_hash];
ht->nodes[key_hash] = node;
return 0;
}
static void
ref_object (struct nl_object *obj, void *data)
{
struct nl_object **out = data;
nl_object_get (obj);
*out = obj;
}
/**
* Get link of traffic control object
* @arg tc traffic control object
*
* Returns the link of a traffic control object. The link is only
* returned if it has been set before via rtnl_tc_set_link() or
* if a link cache was available while parsing the tc object. This
* function may still return NULL even if an ifindex is assigned to
* the tc object. It will _not_ look up the link by itself.
*
* @note The returned link will have its reference counter incremented.
* It is in the responsibility of the caller to return the
* reference.
*
* @return link object or NULL if not set.
*/
struct rtnl_link *rtnl_tc_get_link(struct rtnl_tc *tc)
{
if (tc->tc_link) {
nl_object_get(OBJ_CAST(tc->tc_link));
return tc->tc_link;
}
return NULL;
}
/**
* Set link of traffic control object
* @arg tc traffic control object
* @arg link link object
*
* Sets the link of a traffic control object. This function serves
* the same purpose as rtnl_tc_set_ifindex() but due to the continued
* allowed access to the link object it gives it the possibility to
* retrieve sane default values for the the MTU and the linktype.
* Always prefer this function over rtnl_tc_set_ifindex() if you can
* spare to have an additional link object around.
*/
void rtnl_tc_set_link(struct rtnl_tc *tc, struct rtnl_link *link)
{
rtnl_link_put(tc->tc_link);
if (!link)
return;
nl_object_get(OBJ_CAST(link));
tc->tc_link = link;
tc->tc_ifindex = link->l_index;
tc->ce_mask |= TCA_ATTR_LINK | TCA_ATTR_IFINDEX;
}
static int __store_answer(struct nl_object *obj, struct nl_parser_param *p)
{
struct pickup_param *pp = p->pp_arg;
/*
* the parser will put() the object at the end, expecting the cache
* to take the reference.
*/
nl_object_get(obj);
pp->result = obj;
return 0;
}
void netlink_wrapper::notify_cache_entries(struct nl_cache* cache) {
nl_logfunc("--->netlink_wrapper::notify_cache_entries");
g_nl_rcv_arg.msghdr = NULL;
nl_object* obj = nl_cache_get_first(m_cache_neigh);
while (obj) {
nl_object_get(obj);
neigh_cache_callback(cache, obj, 0);
nl_object_put(obj);
obj = nl_cache_get_next(obj);
}
nl_logfunc("<---netlink_wrapper::notify_cache_entries");
}
int netlink_wrapper::get_neigh(const char* ipaddr, netlink_neigh_info* new_neigh_info)
{
auto_unlocker lock(m_cache_lock);
nl_logfunc("--->netlink_listener::get_neigh");
nl_object* obj;
rtnl_neigh* neigh;
char addr_str[256];
BULLSEYE_EXCLUDE_BLOCK_START
if (!new_neigh_info) {
nl_logerr("Illegal argument. user pass NULL neigh_info to fill");
return -1;
}
BULLSEYE_EXCLUDE_BLOCK_END
obj = nl_cache_get_first(m_cache_neigh);
while (obj) {
nl_object_get(obj); //Acquire a reference on a cache object. cache won't use/free it until calling to nl_object_put(obj)
neigh = (rtnl_neigh*) obj;
nl_addr* addr = rtnl_neigh_get_dst(neigh);
if (addr) {
nl_addr2str(addr, addr_str, 255);
if (!strcmp(addr_str, ipaddr)) {
new_neigh_info->fill(neigh);
nl_object_put(obj);
nl_logdbg("neigh - DST_IP:%s LLADDR:%s", addr_str, new_neigh_info->lladdr_str.c_str() );
nl_logfunc("<---netlink_listener::get_neigh");
return 1;
}
}
nl_object_put(obj);
obj = nl_cache_get_next(obj);
}
nl_logfunc("<---netlink_listener::get_neigh");
return 0;
}
void idiagnl_msg_get(struct idiagnl_msg *msg)
{
nl_object_get((struct nl_object *) msg);
}
void nl_dect_cell_get(struct nl_dect_cell *cell)
{
nl_object_get((struct nl_object *)cell);
}
void nfnl_log_get(struct nfnl_log *log)
{
nl_object_get((struct nl_object *) log);
}
void nfnl_ct_get(struct nfnl_ct *ct)
{
nl_object_get((struct nl_object *) ct);
}
void nfnl_exp_get(struct nfnl_exp *exp)
{
nl_object_get((struct nl_object *) exp);
}
TNlLink::TNlLink(std::shared_ptr<TNl> sock, struct rtnl_link *link) {
Nl = sock;
Link = link;
nl_object_get(OBJ_CAST(Link));
}
/* Callback used by nl_cache_foreach_filter in nl_cache_find.
* Sets parameter p to point to parameter found
*/
void cb_found_cache_obj(struct nl_object *found, void *p)
{
struct nl_object **out = (struct nl_object **)p;
nl_object_get(found);
*out = found;
}
void nfnl_queue_get(struct nfnl_queue *queue)
{
nl_object_get((struct nl_object *) queue);
}