The following commit has been merged in the master branch: commit c40ed2bfa6cc30174d5c547b37bcd6528c830ef4 Author: Antonio Quartulli ordex@autistici.org Date: Fri Jan 6 21:31:33 2012 +0100

batman-adv: set TT_CLIENT_NEW flag before invoking hash_add()

In case of a new tt_local_entry, the TT_CLIENT_NEW flag has to be set before adding such entry to the hash table. Otherwise, it opens a race condition in which the entry can be found but the flag has not been set.

Signed-off-by: Antonio Quartulli ordex@autistici.org Signed-off-by: Marek Lindner lindner_marek@yahoo.de

diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index 4dc5af3..9be9c41 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -210,6 +210,11 @@ void tt_local_add(struct net_device *soft_iface, const uint8_t *addr, if (compare_eth(addr, soft_iface->dev_addr)) tt_local_entry->common.flags |= TT_CLIENT_NOPURGE;

+ /* The local entry has to be marked as NEW to avoid to send it in + * a full table response going out before the next ttvn increment + * (consistency check) */ + tt_local_entry->common.flags |= TT_CLIENT_NEW; + hash_added = hash_add(bat_priv->tt_local_hash, compare_tt, choose_orig, &tt_local_entry->common, &tt_local_entry->common.hash_entry); @@ -222,11 +227,6 @@ void tt_local_add(struct net_device *soft_iface, const uint8_t *addr,

tt_local_event(bat_priv, addr, tt_local_entry->common.flags);

- /* The local entry has to be marked as NEW to avoid to send it in - * a full table response going out before the next ttvn increment - * (consistency check) */ - tt_local_entry->common.flags |= TT_CLIENT_NEW; - /* remove address from global hash if present */ tt_global_entry = tt_global_hash_find(bat_priv, addr);