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authorSven Eckelmann <sven@narfation.org>2011-12-22 20:31:12 +0800
committerMarek Lindner <lindner_marek@yahoo.de>2012-02-17 02:50:20 +0800
commit92f90f56caa30dfcb6c5755776d73df23ef2ae1a (patch)
tree456aa249735742039e5bca0b9d832eda99899e71 /net/batman-adv
parent032b7969f8874d5ddc65691cd3d008beffd2a09e (diff)
downloadblackbird-op-linux-92f90f56caa30dfcb6c5755776d73df23ef2ae1a.tar.gz
blackbird-op-linux-92f90f56caa30dfcb6c5755776d73df23ef2ae1a.zip
batman-adv: refactor tt_global_del() to avoid misalignment
Signed-off-by: Sven Eckelmann <sven@narfation.org> Acked-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Diffstat (limited to 'net/batman-adv')
-rw-r--r--net/batman-adv/translation-table.c42
1 files changed, 22 insertions, 20 deletions
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index ff9a1b33c136..30c2d1b7de49 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -657,29 +657,31 @@ void tt_global_del(struct bat_priv *bat_priv,
struct tt_local_entry *tt_local_entry = NULL;
tt_global_entry = tt_global_hash_find(bat_priv, addr);
- if (!tt_global_entry)
+ if (!tt_global_entry || tt_global_entry->orig_node != orig_node)
goto out;
- if (tt_global_entry->orig_node == orig_node) {
- if (roaming) {
- /* if we are deleting a global entry due to a roam
- * event, there are two possibilities:
- * 1) the client roamed from node A to node B => we mark
- * it with TT_CLIENT_ROAM, we start a timer and we
- * wait for node B to claim it. In case of timeout
- * the entry is purged.
- * 2) the client roamed to us => we can directly delete
- * the global entry, since it is useless now. */
- tt_local_entry = tt_local_hash_find(bat_priv,
- tt_global_entry->common.addr);
- if (!tt_local_entry) {
- tt_global_entry->common.flags |= TT_CLIENT_ROAM;
- tt_global_entry->roam_at = jiffies;
- goto out;
- }
- }
- _tt_global_del(bat_priv, tt_global_entry, message);
+ if (!roaming)
+ goto out_del;
+
+ /* if we are deleting a global entry due to a roam
+ * event, there are two possibilities:
+ * 1) the client roamed from node A to node B => we mark
+ * it with TT_CLIENT_ROAM, we start a timer and we
+ * wait for node B to claim it. In case of timeout
+ * the entry is purged.
+ * 2) the client roamed to us => we can directly delete
+ * the global entry, since it is useless now. */
+ tt_local_entry = tt_local_hash_find(bat_priv,
+ tt_global_entry->common.addr);
+ if (!tt_local_entry) {
+ tt_global_entry->common.flags |= TT_CLIENT_ROAM;
+ tt_global_entry->roam_at = jiffies;
+ goto out;
}
+
+out_del:
+ _tt_global_del(bat_priv, tt_global_entry, message);
+
out:
if (tt_global_entry)
tt_global_entry_free_ref(tt_global_entry);
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