batman-adv: limit local translation table max size
The local translation table size is limited by what can be
transferred from one node to another via a full table request.
The number of entries fitting into a full table request depend
on whether the fragmentation is enabled or not. Therefore this
patch introduces a max table size check and refuses to add
more local clients when that size is reached. Moreover, if the
max full table packet size changes (MTU change or fragmentation
is disabled) the local table is downsized instantaneously.
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Acked-by: Antonio Quartulli <ordex@autistici.org>
diff --git a/net/batman-adv/translation-table.h b/net/batman-adv/translation-table.h
index dc6db4e..026b1ff 100644
--- a/net/batman-adv/translation-table.h
+++ b/net/batman-adv/translation-table.h
@@ -21,7 +21,7 @@
#define _NET_BATMAN_ADV_TRANSLATION_TABLE_H_
int batadv_tt_init(struct batadv_priv *bat_priv);
-void batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
+bool batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
unsigned short vid, int ifindex);
uint16_t batadv_tt_local_remove(struct batadv_priv *bat_priv,
const uint8_t *addr, unsigned short vid,
@@ -45,6 +45,7 @@
uint8_t *addr, unsigned short vid);
bool batadv_tt_local_client_is_roaming(struct batadv_priv *bat_priv,
uint8_t *addr, unsigned short vid);
+void batadv_tt_local_resize_to_mtu(struct net_device *soft_iface);
bool batadv_tt_add_temporary_global_entry(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig_node,
const unsigned char *addr,