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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>
This commit is contained in:
Sven Eckelmann 2011-12-22 20:31:12 +08:00 committed by Marek Lindner
parent 032b7969f8
commit 92f90f56ca
1 changed files with 22 additions and 20 deletions
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42
net/batman-adv/translation-table.c
View File

@ -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);