batman-adv: correctly set the data field in the TT_REPONSE packet
In the TT_RESPONSE packet, the number of carried entries is not correctly set.
This leads to a wrong interpretation of the packet payload on the receiver side
causing random entries to be added to the global translation table. Therefore
the latter gets always corrupted, triggering a table recovery all the time.
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 f599db9..ef1acfd 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -999,7 +999,6 @@
tt_response = (struct tt_query_packet *)skb_put(skb,
tt_query_size + tt_len);
tt_response->ttvn = ttvn;
- tt_response->tt_data = htons(tt_tot);
tt_change = (struct tt_change *)(skb->data + tt_query_size);
tt_count = 0;
@@ -1025,6 +1024,10 @@
}
rcu_read_unlock();
+ /* store in the message the number of entries we have successfully
+ * copied */
+ tt_response->tt_data = htons(tt_count);
+
out:
return skb;
}