Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-10-31 17:21:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
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>
This commit is contained in:
Antonio Quartulli 2012-01-06 21:31:33 +01:00 committed by Marek Lindner
parent 567db7b0b7
commit c40ed2bfa6
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
net/batman-adv/translation-table.c
View File

@ -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);