patches/batman-adv_correctly_set_the_data_field_in_the_TT_REPONSE_packet.patch

   1 From: Antonio Quartulli <ordex@autistici.org>
   2
   3 In the TT_RESPONSE packet, the number of carried entries is not correctly set.
   4 This leads to a wrong interpretation of the packet payload on the receiver side
   5 causing random entries to be added to the global translation table. Therefore
   6 the latter gets always corrupted, triggering a table recovery all the time.
   7
   8 Signed-off-by: Antonio Quartulli <ordex@autistici.org>
   9 ---
  10  translation-table.c |    5 ++++-
  11  1 files changed, 4 insertions(+), 1 deletions(-)
  12
  13 --- a/translation-table.c
  14 +++ b/translation-table.c
  15 @@ -1054,7 +1054,6 @@ static struct sk_buff *tt_response_fill_table(uint16_t tt_len, uint8_t ttvn,
  16         tt_response = (struct tt_query_packet *)skb_put(skb,
  17                                                      tt_query_size + tt_len);
  18         tt_response->ttvn = ttvn;
  19 -       tt_response->tt_data = htons(tt_tot);
  20
  21         tt_change = (struct tt_change *)(skb->data + tt_query_size);
  22         tt_count = 0;
  23 @@ -1080,6 +1079,10 @@ static struct sk_buff *tt_response_fill_table(uint16_t tt_len, uint8_t ttvn,
  24         }
  25         rcu_read_unlock();
  26
  27 +       /* store in the message the number of entries we have successfully
  28 +        * copied */
  29 +       tt_response->tt_data = htons(tt_count);
  30 +
  31  out:
  32         return skb;
  33  }
  34 --
  35 1.7.3.4
  36