[B.A.T.M.A.N.] [PATCH maint 1/2] batman-adv: Avoid storing non-TT-sync flags on singular entries too

Linus Lüssing
2018-06-06T22:46:23Z

Since commit 382d020fe3fa ("batman-adv: fix TT sync flag inconsistencies")
TT sync flags and TT non-sync'd flags are supposed to be stored
separately.

The previous patch missed to apply this separation on a TT entry with
only a single TT orig entry.

This is a minor fix because with only a single TT orig entry the DDoS
issue the former patch solves does not apply.

Fixes: 382d020fe3fa ("batman-adv: fix TT sync flag inconsistencies")
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
---
net/batman-adv/translation-table.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 39865513..61ce3000 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -1705,7 +1705,8 @@ static bool batadv_tt_global_add(struct batadv_priv *bat_priv,
ether_addr_copy(common->addr, tt_addr);
common->vid = vid;

- common->flags = flags;
+ common->flags = flags & (~BATADV_TT_SYNC_MASK);
+
tt_global_entry->roam_at = 0;
/* node must store current time in case of roaming. This is
* needed to purge this entry out on timeout (if nobody claims
--
2.11.0