[B.A.T.M.A.N.] [PATCHv3] batman-adv: enable fast client detection using unicast_4addr packets

[B.A.T.M.A.N.] [PATCHv3] batman-adv: enable fast client detection using unicast_4addr packets

[Antonio Quartulli]

The "early client detection mechanism" can be extended to find new clients by
means of unicast_4addr packets.

The unicast_4addr packet contains as well as the broadcast packet (which is
currently used in this mechanism) the address of the originating node and can
therefore be used to install new entries in the Global Translation Table

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---

v3:
- fixed refcounting (again)

 routing.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/routing.c b/routing.c
index 96375c5..c2c4de3 100644
--- a/routing.c
+++ b/routing.c
@@ -1042,6 +1042,8 @@ int batadv_recv_unicast_packet(struct sk_buff *skb,
 	struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface);
 	struct batadv_unicast_packet *unicast_packet;
 	struct batadv_unicast_4addr_packet *unicast_4addr_packet;
+	uint8_t *orig_addr;
+	struct batadv_orig_node *orig_node = NULL;
 	int hdr_size = sizeof(*unicast_packet);
 	bool is4addr;
 
@@ -1061,9 +1063,12 @@ int batadv_recv_unicast_packet(struct sk_buff *skb,
 
 	/* packet for me */
 	if (batadv_is_my_mac(unicast_packet->dest)) {
-		if (is4addr)
+		if (is4addr) {
 			batadv_dat_inc_counter(bat_priv,
 					       unicast_4addr_packet->subtype);
+			orig_addr = unicast_4addr_packet->src;
+			orig_node = batadv_orig_hash_find(bat_priv, orig_addr);
+		}
 
 		if (batadv_dat_snoop_incoming_arp_request(bat_priv, skb,
 							  hdr_size))
@@ -1073,9 +1078,12 @@ int batadv_recv_unicast_packet(struct sk_buff *skb,
 			goto rx_success;
 
 		batadv_interface_rx(recv_if->soft_iface, skb, recv_if, hdr_size,
-				    NULL);
+				    orig_node);
 
 rx_success:
+		if (orig_node)
+			batadv_orig_node_free_ref(orig_node);
+
 		return NET_RX_SUCCESS;
 	}
 
-- 
1.7.12.3

Re: [B.A.T.M.A.N.] [PATCHv3] batman-adv: enable fast client detection using unicast_4addr packets

[Marek Lindner]

On Sunday, October 14, 2012 23:19:19 Antonio Quartulli wrote:
> The "early client detection mechanism" can be extended to find new clients
> by means of unicast_4addr packets.
> 
> The unicast_4addr packet contains as well as the broadcast packet (which is
> currently used in this mechanism) the address of the originating node and
> can therefore be used to install new entries in the Global Translation
> Table
> 
> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
> ---
> 
> v3:
> - fixed refcounting (again)
> 
>  routing.c | 12 ++++++++++--
>  1 file changed, 10 insertions(+), 2 deletions(-)

Applied in revision d7cc20f.

Thanks,
Marek