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| author | Antonio Quartulli <ordex@autistici.org> | 2011-10-17 14:25:13 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-11-26 09:08:39 -0800 |
| commit | 02460fcf18a10059eb52a223cc62d7d9b43ac3c0 (patch) | |
| tree | c771eeff85559ea7c94a8333b23fd76adecd750e | |
| parent | bde860c48a217a9b71fda841090afab693ccb2b6 (diff) | |
| download | lwn-02460fcf18a10059eb52a223cc62d7d9b43ac3c0.tar.gz lwn-02460fcf18a10059eb52a223cc62d7d9b43ac3c0.zip | |
batman-adv: correctly set the data field in the TT_REPONSE packet
commit 9d8523931f7f5eb8900077f0da0fbe6b8ad0010b 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>
| -rw-r--r-- | net/batman-adv/translation-table.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index f599db9dbec1..ef1acfd7653c 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -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; } |