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batman-adv: correctly set the data field in the TT_REPONSE packet

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commit 9d8523931f upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Antonio Quartulli
2011-10-17 14:25:13 +02:00
committed by Greg Kroah-Hartman
parent bde860c48a
commit 02460fcf18
1 changed files with 4 additions and 1 deletions
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5
net/batman-adv/translation-table.c
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@@ -999,7 +999,6 @@ static struct sk_buff *tt_response_fill_table(uint16_t tt_len, uint8_t ttvn,
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 @@ static struct sk_buff *tt_response_fill_table(uint16_t tt_len, uint8_t ttvn,
}
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;
}