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authorAntonio Quartulli <ordex@autistici.org>2011-07-07 15:35:36 +0200
committerMarek Lindner <lindner_marek@yahoo.de>2011-08-22 15:16:20 +0200
commit59b699cdee039d75915c354da06937102d1f9a84 (patch)
tree33fabd9cac27cb7bc1d3fbc765f098b5b8e8575e /net/batman-adv/translation-table.c
parentbc2790808a7a3699a7c9f72f7ad225c8504824aa (diff)
downloadlwn-59b699cdee039d75915c354da06937102d1f9a84.tar.gz
lwn-59b699cdee039d75915c354da06937102d1f9a84.zip
batman-adv: implement AP-isolation on the receiver side
When a node receives a unicast packet it checks if the source and the destination client can communicate or not due to the AP isolation Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Diffstat (limited to 'net/batman-adv/translation-table.c')
-rw-r--r--net/batman-adv/translation-table.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index d6305645e08d..d0ed931ad2e7 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -781,6 +781,18 @@ static void tt_global_table_free(struct bat_priv *bat_priv)
bat_priv->tt_global_hash = NULL;
}
+static bool _is_ap_isolated(struct tt_local_entry *tt_local_entry,
+ struct tt_global_entry *tt_global_entry)
+{
+ bool ret = false;
+
+ if (tt_local_entry->flags & TT_CLIENT_WIFI &&
+ tt_global_entry->flags & TT_CLIENT_WIFI)
+ ret = true;
+
+ return ret;
+}
+
struct orig_node *transtable_search(struct bat_priv *bat_priv,
const uint8_t *addr)
{
@@ -1729,3 +1741,33 @@ void tt_commit_changes(struct bat_priv *bat_priv)
atomic_inc(&bat_priv->ttvn);
bat_priv->tt_poss_change = false;
}
+
+bool is_ap_isolated(struct bat_priv *bat_priv, uint8_t *src, uint8_t *dst)
+{
+ struct tt_local_entry *tt_local_entry = NULL;
+ struct tt_global_entry *tt_global_entry = NULL;
+ bool ret = true;
+
+ if (!atomic_read(&bat_priv->ap_isolation))
+ return false;
+
+ tt_local_entry = tt_local_hash_find(bat_priv, dst);
+ if (!tt_local_entry)
+ goto out;
+
+ tt_global_entry = tt_global_hash_find(bat_priv, src);
+ if (!tt_global_entry)
+ goto out;
+
+ if (_is_ap_isolated(tt_local_entry, tt_global_entry))
+ goto out;
+
+ ret = false;
+
+out:
+ if (tt_global_entry)
+ tt_global_entry_free_ref(tt_global_entry);
+ if (tt_local_entry)
+ tt_local_entry_free_ref(tt_local_entry);
+ return ret;
+}