-/* Copyright (C) 2009-2014 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2009-2015 B.A.T.M.A.N. contributors:
*
* Marek Lindner, Simon Wunderlich
*
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
+#include "originator.h"
#include "main.h"
+
+#include <linux/errno.h>
+#include <linux/etherdevice.h>
+#include <linux/fs.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/lockdep.h>
+#include <linux/netdevice.h>
+#include <linux/rculist.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/workqueue.h>
+
#include "distributed-arp-table.h"
-#include "originator.h"
-#include "hash.h"
-#include "translation-table.h"
-#include "routing.h"
+#include "fragmentation.h"
#include "gateway_client.h"
#include "hard-interface.h"
-#include "soft-interface.h"
-#include "bridge_loop_avoidance.h"
-#include "network-coding.h"
-#include "fragmentation.h"
+#include "hash.h"
#include "multicast.h"
+#include "network-coding.h"
+#include "routing.h"
+#include "translation-table.h"
/* hash class keys */
static struct lock_class_key batadv_orig_hash_lock_class_key;
struct batadv_orig_node_vlan *vlan = NULL, *tmp;
rcu_read_lock();
- list_for_each_entry_rcu(tmp, &orig_node->vlan_list, list) {
+ hlist_for_each_entry_rcu(tmp, &orig_node->vlan_list, list) {
if (tmp->vid != vid)
continue;
atomic_set(&vlan->refcount, 2);
vlan->vid = vid;
- list_add_rcu(&vlan->list, &orig_node->vlan_list);
+ hlist_add_head_rcu(&vlan->list, &orig_node->vlan_list);
out:
spin_unlock_bh(&orig_node->vlan_list_lock);
}
/**
- * batadv_neigh_ifinfo_free_rcu - free the neigh_ifinfo object
- * @rcu: rcu pointer of the neigh_ifinfo object
- */
-static void batadv_neigh_ifinfo_free_rcu(struct rcu_head *rcu)
-{
- struct batadv_neigh_ifinfo *neigh_ifinfo;
-
- neigh_ifinfo = container_of(rcu, struct batadv_neigh_ifinfo, rcu);
-
- if (neigh_ifinfo->if_outgoing != BATADV_IF_DEFAULT)
- batadv_hardif_free_ref_now(neigh_ifinfo->if_outgoing);
-
- kfree(neigh_ifinfo);
-}
-
-/**
- * batadv_neigh_ifinfo_free_now - decrement the refcounter and possibly free
- * the neigh_ifinfo (without rcu callback)
+ * batadv_neigh_ifinfo_release - release neigh_ifinfo from lists and queue for
+ * free after rcu grace period
* @neigh_ifinfo: the neigh_ifinfo object to release
*/
static void
-batadv_neigh_ifinfo_free_ref_now(struct batadv_neigh_ifinfo *neigh_ifinfo)
+batadv_neigh_ifinfo_release(struct batadv_neigh_ifinfo *neigh_ifinfo)
{
- if (atomic_dec_and_test(&neigh_ifinfo->refcount))
- batadv_neigh_ifinfo_free_rcu(&neigh_ifinfo->rcu);
+ if (neigh_ifinfo->if_outgoing != BATADV_IF_DEFAULT)
+ batadv_hardif_free_ref(neigh_ifinfo->if_outgoing);
+
+ kfree_rcu(neigh_ifinfo, rcu);
}
/**
- * batadv_neigh_ifinfo_free_ref - decrement the refcounter and possibly free
+ * batadv_neigh_ifinfo_free_ref - decrement the refcounter and possibly release
* the neigh_ifinfo
* @neigh_ifinfo: the neigh_ifinfo object to release
*/
void batadv_neigh_ifinfo_free_ref(struct batadv_neigh_ifinfo *neigh_ifinfo)
{
if (atomic_dec_and_test(&neigh_ifinfo->refcount))
- call_rcu(&neigh_ifinfo->rcu, batadv_neigh_ifinfo_free_rcu);
+ batadv_neigh_ifinfo_release(neigh_ifinfo);
}
/**
* batadv_neigh_node_free_rcu - free the neigh_node
- * @rcu: rcu pointer of the neigh_node
+ * batadv_neigh_node_release - release neigh_node from lists and queue for
+ * free after rcu grace period
+ * @neigh_node: neigh neighbor to free
*/
-static void batadv_neigh_node_free_rcu(struct rcu_head *rcu)
+static void batadv_neigh_node_release(struct batadv_neigh_node *neigh_node)
{
struct hlist_node *node_tmp;
- struct batadv_neigh_node *neigh_node;
struct batadv_neigh_ifinfo *neigh_ifinfo;
+ struct batadv_algo_ops *bao;
- neigh_node = container_of(rcu, struct batadv_neigh_node, rcu);
+ bao = neigh_node->orig_node->bat_priv->bat_algo_ops;
hlist_for_each_entry_safe(neigh_ifinfo, node_tmp,
&neigh_node->ifinfo_list, list) {
- batadv_neigh_ifinfo_free_ref_now(neigh_ifinfo);
+ batadv_neigh_ifinfo_free_ref(neigh_ifinfo);
}
- batadv_hardif_free_ref_now(neigh_node->if_incoming);
- kfree(neigh_node);
-}
+ if (bao->bat_neigh_free)
+ bao->bat_neigh_free(neigh_node);
-/**
- * batadv_neigh_node_free_ref_now - decrement the neighbors refcounter
- * and possibly free it (without rcu callback)
- * @neigh_node: neigh neighbor to free
- */
-static void
-batadv_neigh_node_free_ref_now(struct batadv_neigh_node *neigh_node)
-{
- if (atomic_dec_and_test(&neigh_node->refcount))
- batadv_neigh_node_free_rcu(&neigh_node->rcu);
+ batadv_hardif_free_ref(neigh_node->if_incoming);
+
+ kfree_rcu(neigh_node, rcu);
}
/**
* batadv_neigh_node_free_ref - decrement the neighbors refcounter
- * and possibly free it
+ * and possibly release it
* @neigh_node: neigh neighbor to free
*/
void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node)
{
if (atomic_dec_and_test(&neigh_node->refcount))
- call_rcu(&neigh_node->rcu, batadv_neigh_node_free_rcu);
+ batadv_neigh_node_release(neigh_node);
}
/**
return neigh_ifinfo;
}
-/**
- * batadv_neigh_node_new - create and init a new neigh_node object
- * @hard_iface: the interface where the neighbour is connected to
- * @neigh_addr: the mac address of the neighbour interface
- * @orig_node: originator object representing the neighbour
- *
- * Allocates a new neigh_node object and initialises all the generic fields.
- * Returns the new object or NULL on failure.
- */
-struct batadv_neigh_node *
-batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
- const uint8_t *neigh_addr,
- struct batadv_orig_node *orig_node)
-{
- struct batadv_neigh_node *neigh_node;
-
- neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC);
- if (!neigh_node)
- goto out;
-
- INIT_HLIST_NODE(&neigh_node->list);
- INIT_HLIST_HEAD(&neigh_node->ifinfo_list);
- spin_lock_init(&neigh_node->ifinfo_lock);
-
- ether_addr_copy(neigh_node->addr, neigh_addr);
- neigh_node->if_incoming = hard_iface;
- neigh_node->orig_node = orig_node;
-
- /* extra reference for return */
- atomic_set(&neigh_node->refcount, 2);
-
-out:
- return neigh_node;
-}
-
/**
* batadv_neigh_node_get - retrieve a neighbour from the list
* @orig_node: originator which the neighbour belongs to
* which is connected through the provided hard interface.
* Returns NULL if the neighbour is not found.
*/
-struct batadv_neigh_node *
+static struct batadv_neigh_node *
batadv_neigh_node_get(const struct batadv_orig_node *orig_node,
const struct batadv_hard_iface *hard_iface,
- const uint8_t *addr)
+ const u8 *addr)
{
struct batadv_neigh_node *tmp_neigh_node, *res = NULL;
}
/**
- * batadv_orig_ifinfo_free_rcu - free the orig_ifinfo object
- * @rcu: rcu pointer of the orig_ifinfo object
+ * batadv_neigh_node_new - create and init a new neigh_node object
+ * @orig_node: originator object representing the neighbour
+ * @hard_iface: the interface where the neighbour is connected to
+ * @neigh_addr: the mac address of the neighbour interface
+ *
+ * Allocates a new neigh_node object and initialises all the generic fields.
+ * Returns the new object or NULL on failure.
*/
-static void batadv_orig_ifinfo_free_rcu(struct rcu_head *rcu)
+struct batadv_neigh_node *
+batadv_neigh_node_new(struct batadv_orig_node *orig_node,
+ struct batadv_hard_iface *hard_iface,
+ const u8 *neigh_addr)
{
- struct batadv_orig_ifinfo *orig_ifinfo;
- struct batadv_neigh_node *router;
+ struct batadv_neigh_node *neigh_node;
- orig_ifinfo = container_of(rcu, struct batadv_orig_ifinfo, rcu);
+ neigh_node = batadv_neigh_node_get(orig_node, hard_iface, neigh_addr);
+ if (neigh_node)
+ goto out;
- if (orig_ifinfo->if_outgoing != BATADV_IF_DEFAULT)
- batadv_hardif_free_ref_now(orig_ifinfo->if_outgoing);
+ neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC);
+ if (!neigh_node)
+ goto out;
- /* this is the last reference to this object */
- router = rcu_dereference_protected(orig_ifinfo->router, true);
- if (router)
- batadv_neigh_node_free_ref_now(router);
- kfree(orig_ifinfo);
+ if (!atomic_inc_not_zero(&hard_iface->refcount)) {
+ kfree(neigh_node);
+ neigh_node = NULL;
+ goto out;
+ }
+
+ INIT_HLIST_NODE(&neigh_node->list);
+ INIT_HLIST_HEAD(&neigh_node->ifinfo_list);
+ spin_lock_init(&neigh_node->ifinfo_lock);
+
+ ether_addr_copy(neigh_node->addr, neigh_addr);
+ neigh_node->if_incoming = hard_iface;
+ neigh_node->orig_node = orig_node;
+
+ /* extra reference for return */
+ atomic_set(&neigh_node->refcount, 2);
+
+ spin_lock_bh(&orig_node->neigh_list_lock);
+ hlist_add_head_rcu(&neigh_node->list, &orig_node->neigh_list);
+ spin_unlock_bh(&orig_node->neigh_list_lock);
+
+ batadv_dbg(BATADV_DBG_BATMAN, orig_node->bat_priv,
+ "Creating new neighbor %pM for orig_node %pM on interface %s\n",
+ neigh_addr, orig_node->orig, hard_iface->net_dev->name);
+
+out:
+ return neigh_node;
}
/**
- * batadv_orig_ifinfo_free_ref - decrement the refcounter and possibly free
- * the orig_ifinfo (without rcu callback)
+ * batadv_orig_ifinfo_release - release orig_ifinfo from lists and queue for
+ * free after rcu grace period
* @orig_ifinfo: the orig_ifinfo object to release
*/
-static void
-batadv_orig_ifinfo_free_ref_now(struct batadv_orig_ifinfo *orig_ifinfo)
+static void batadv_orig_ifinfo_release(struct batadv_orig_ifinfo *orig_ifinfo)
{
- if (atomic_dec_and_test(&orig_ifinfo->refcount))
- batadv_orig_ifinfo_free_rcu(&orig_ifinfo->rcu);
+ struct batadv_neigh_node *router;
+
+ if (orig_ifinfo->if_outgoing != BATADV_IF_DEFAULT)
+ batadv_hardif_free_ref(orig_ifinfo->if_outgoing);
+
+ /* this is the last reference to this object */
+ router = rcu_dereference_protected(orig_ifinfo->router, true);
+ if (router)
+ batadv_neigh_node_free_ref(router);
+
+ kfree_rcu(orig_ifinfo, rcu);
}
/**
- * batadv_orig_ifinfo_free_ref - decrement the refcounter and possibly free
+ * batadv_orig_ifinfo_free_ref - decrement the refcounter and possibly release
* the orig_ifinfo
* @orig_ifinfo: the orig_ifinfo object to release
*/
void batadv_orig_ifinfo_free_ref(struct batadv_orig_ifinfo *orig_ifinfo)
{
if (atomic_dec_and_test(&orig_ifinfo->refcount))
- call_rcu(&orig_ifinfo->rcu, batadv_orig_ifinfo_free_rcu);
+ batadv_orig_ifinfo_release(orig_ifinfo);
}
+/**
+ * batadv_orig_node_free_rcu - free the orig_node
+ * @rcu: rcu pointer of the orig_node
+ */
static void batadv_orig_node_free_rcu(struct rcu_head *rcu)
{
- struct hlist_node *node_tmp;
- struct batadv_neigh_node *neigh_node;
struct batadv_orig_node *orig_node;
- struct batadv_orig_ifinfo *orig_ifinfo;
orig_node = container_of(rcu, struct batadv_orig_node, rcu);
+ batadv_mcast_purge_orig(orig_node);
+
+ batadv_frag_purge_orig(orig_node, NULL);
+
+ if (orig_node->bat_priv->bat_algo_ops->bat_orig_free)
+ orig_node->bat_priv->bat_algo_ops->bat_orig_free(orig_node);
+
+ kfree(orig_node->tt_buff);
+ kfree(orig_node);
+}
+
+/**
+ * batadv_orig_node_release - release orig_node from lists and queue for
+ * free after rcu grace period
+ * @orig_node: the orig node to free
+ */
+static void batadv_orig_node_release(struct batadv_orig_node *orig_node)
+{
+ struct hlist_node *node_tmp;
+ struct batadv_neigh_node *neigh_node;
+ struct batadv_orig_ifinfo *orig_ifinfo;
+
spin_lock_bh(&orig_node->neigh_list_lock);
/* for all neighbors towards this originator ... */
hlist_for_each_entry_safe(neigh_node, node_tmp,
&orig_node->neigh_list, list) {
hlist_del_rcu(&neigh_node->list);
- batadv_neigh_node_free_ref_now(neigh_node);
+ batadv_neigh_node_free_ref(neigh_node);
}
hlist_for_each_entry_safe(orig_ifinfo, node_tmp,
&orig_node->ifinfo_list, list) {
hlist_del_rcu(&orig_ifinfo->list);
- batadv_orig_ifinfo_free_ref_now(orig_ifinfo);
+ batadv_orig_ifinfo_free_ref(orig_ifinfo);
}
spin_unlock_bh(&orig_node->neigh_list_lock);
- batadv_mcast_purge_orig(orig_node);
-
/* Free nc_nodes */
batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL);
- batadv_frag_purge_orig(orig_node, NULL);
-
- if (orig_node->bat_priv->bat_algo_ops->bat_orig_free)
- orig_node->bat_priv->bat_algo_ops->bat_orig_free(orig_node);
-
- kfree(orig_node->tt_buff);
- kfree(orig_node);
+ call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu);
}
/**
* batadv_orig_node_free_ref - decrement the orig node refcounter and possibly
- * schedule an rcu callback for freeing it
+ * release it
* @orig_node: the orig node to free
*/
void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node)
{
if (atomic_dec_and_test(&orig_node->refcount))
- call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu);
-}
-
-/**
- * batadv_orig_node_free_ref_now - decrement the orig node refcounter and
- * possibly free it (without rcu callback)
- * @orig_node: the orig node to free
- */
-void batadv_orig_node_free_ref_now(struct batadv_orig_node *orig_node)
-{
- if (atomic_dec_and_test(&orig_node->refcount))
- batadv_orig_node_free_rcu(&orig_node->rcu);
+ batadv_orig_node_release(orig_node);
}
void batadv_originator_free(struct batadv_priv *bat_priv)
struct hlist_head *head;
spinlock_t *list_lock; /* spinlock to protect write access */
struct batadv_orig_node *orig_node;
- uint32_t i;
+ u32 i;
if (!hash)
return;
* Returns the newly created object or NULL on failure.
*/
struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
- const uint8_t *addr)
+ const u8 *addr)
{
struct batadv_orig_node *orig_node;
struct batadv_orig_node_vlan *vlan;
return NULL;
INIT_HLIST_HEAD(&orig_node->neigh_list);
- INIT_LIST_HEAD(&orig_node->vlan_list);
+ INIT_HLIST_HEAD(&orig_node->vlan_list);
INIT_HLIST_HEAD(&orig_node->ifinfo_list);
spin_lock_init(&orig_node->bcast_seqno_lock);
spin_lock_init(&orig_node->neigh_list_lock);
orig_node->last_seen = jiffies;
reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS);
orig_node->bcast_seqno_reset = reset_time;
+
#ifdef CONFIG_BATMAN_ADV_MCAST
orig_node->mcast_flags = BATADV_NO_FLAGS;
+ INIT_HLIST_NODE(&orig_node->mcast_want_all_unsnoopables_node);
+ INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv4_node);
+ INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv6_node);
+ spin_lock_init(&orig_node->mcast_handler_lock);
#endif
/* create a vlan object for the "untagged" LAN */
struct hlist_head *head;
spinlock_t *list_lock; /* spinlock to protect write access */
struct batadv_orig_node *orig_node;
- uint32_t i;
+ u32 i;
if (!hash)
return;
spin_unlock_bh(list_lock);
}
- batadv_gw_node_purge(bat_priv);
batadv_gw_election(bat_priv);
}
struct batadv_hashtable *hash = bat_priv->orig_hash;
struct hlist_head *head;
struct batadv_orig_node *orig_node;
- uint32_t i;
+ u32 i;
int ret;
/* resize all orig nodes because orig_node->bcast_own(_sum) depend on
struct batadv_hard_iface *hard_iface_tmp;
struct batadv_orig_node *orig_node;
struct batadv_algo_ops *bao = bat_priv->bat_algo_ops;
- uint32_t i;
+ u32 i;
int ret;
/* resize all orig nodes because orig_node->bcast_own(_sum) depend on
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