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batman-adv: tvlv - convert tt query packet to use tvlv unicast packets

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Instead of generating TT specific packets the TVLV unicast API is used
to send translation table data.

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
This commit is contained in:
Marek Lindner
2013-04-23 21:40:02 +08:00
committed by Antonio Quartulli
parent e1bf0c1409
commit 335fbe0f5d
5 changed files with 284 additions and 332 deletions
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78
net/batman-adv/routing.c
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@@ -557,84 +557,6 @@ static int batadv_check_unicast_packet(struct batadv_priv *bat_priv,
return 0;
}
int batadv_recv_tt_query(struct sk_buff *skb, struct batadv_hard_iface *recv_if)
{
struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface);
struct batadv_tt_query_packet *tt_query;
uint16_t tt_size;
int hdr_size = sizeof(*tt_query);
char tt_flag;
size_t packet_size;
if (batadv_check_unicast_packet(bat_priv, skb, hdr_size) < 0)
return NET_RX_DROP;
/* I could need to modify it */
if (skb_cow(skb, sizeof(struct batadv_tt_query_packet)) < 0)
goto out;
tt_query = (struct batadv_tt_query_packet *)skb->data;
switch (tt_query->flags & BATADV_TT_QUERY_TYPE_MASK) {
case BATADV_TT_REQUEST:
batadv_inc_counter(bat_priv, BATADV_CNT_TT_REQUEST_RX);
/* If we cannot provide an answer the tt_request is
* forwarded
*/
if (!batadv_send_tt_response(bat_priv, tt_query)) {
if (tt_query->flags & BATADV_TT_FULL_TABLE)
tt_flag = 'F';
else
tt_flag = '.';
batadv_dbg(BATADV_DBG_TT, bat_priv,
"Routing TT_REQUEST to %pM [%c]\n",
tt_query->dst,
tt_flag);
return batadv_route_unicast_packet(skb, recv_if);
}
break;
case BATADV_TT_RESPONSE:
batadv_inc_counter(bat_priv, BATADV_CNT_TT_RESPONSE_RX);
if (batadv_is_my_mac(bat_priv, tt_query->dst)) {
/* packet needs to be linearized to access the TT
* changes
*/
if (skb_linearize(skb) < 0)
goto out;
/* skb_linearize() possibly changed skb->data */
tt_query = (struct batadv_tt_query_packet *)skb->data;
tt_size = batadv_tt_len(ntohs(tt_query->tt_data));
/* Ensure we have all the claimed data */
packet_size = sizeof(struct batadv_tt_query_packet);
packet_size += tt_size;
if (unlikely(skb_headlen(skb) < packet_size))
goto out;
batadv_handle_tt_response(bat_priv, tt_query);
} else {
if (tt_query->flags & BATADV_TT_FULL_TABLE)
tt_flag = 'F';
else
tt_flag = '.';
batadv_dbg(BATADV_DBG_TT, bat_priv,
"Routing TT_RESPONSE to %pM [%c]\n",
tt_query->dst,
tt_flag);
return batadv_route_unicast_packet(skb, recv_if);
}
break;
}
out:
/* returning NET_RX_DROP will make the caller function kfree the skb */
return NET_RX_DROP;
}
int batadv_recv_roam_adv(struct sk_buff *skb, struct batadv_hard_iface *recv_if)
{
struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface);