[B.A.T.M.A.N.] [PATCH-maint 2/4] batman-adv: avoid keeping false temporary entry

Simon Wunderlich
2015-08-21T15:15:16Z

In the case when a temporary entry is added first and a proper tt entry
is added after that, the temporary tt entry is kept in the orig list.
However the temporary flag is removed at this point, and therefore the
purge function can not find this temporary entry anymore.

Therefore, remove the previous temp entry before adding the new proper
one.

Reported-by: Alessandro Bolletta <alessandro@mediaspot.net>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
---
net/batman-adv/translation-table.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 7986ec5..f629c21 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -1416,9 +1416,15 @@ static bool batadv_tt_global_add(struct batadv_priv *bat_priv,
}

/* if the client was temporary added before receiving the first
- * OGM announcing it, we have to clear the TEMP flag
+ * OGM announcing it, we have to clear the TEMP flag. Also,
+ * remove the previous temporary orig node and re-add it
+ * if required. If the orig entry changed, the new one which
+ * is a non-temporary entry is preferred.
*/
- common->flags &= ~BATADV_TT_CLIENT_TEMP;
+ if (common->flags & BATADV_TT_CLIENT_TEMP) {
+ batadv_tt_global_del_orig_list(tt_global_entry);
+ common->flags &= ~BATADV_TT_CLIENT_TEMP;
+ }

/* the change can carry possible "attribute" flags like the
* TT_CLIENT_WIFI, therefore they have to be copied in the
--
2.5.0