[B.A.T.M.A.N.] [PATCHv2 maint] batman-adv: fix local TT check for outgoing arp requests in DAT

[B.A.T.M.A.N.] [PATCHv2 maint] batman-adv: fix local TT check for outgoing arp requests in DAT

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

Change introduced by d6bd8b36fa1f3d72a6fd5942a6e9bde6ddafcd0d
("batman-adv: make DAT drop ARP requests targeting local clients")
implements a check that prevents DAT from using the caching
mechanism when the client that is supposed to provide a reply
to an arp request is local.

However change brought by 3e26722bc9f248ec4316749fc1957365c0fa5e4b
("batman-adv: make the Distributed ARP Table vlan aware")
has not converted the above check into its vlan aware version
thus making it useless when the local client is behind a vlan.

Fix the behaviour by properly specifying the vlan when
checking for a client being local or not.

Reported-by: Simon Wunderlich <simon@open-mesh.com>
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
---

Changes from v2:
- added reported-by clause

 distributed-arp-table.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/distributed-arp-table.c b/distributed-arp-table.c
index 5bb37a8..a5d75be 100644
--- a/distributed-arp-table.c
+++ b/distributed-arp-table.c
@@ -940,8 +940,7 @@ bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
 		 * additional DAT answer may trigger kernel warnings about
 		 * a packet coming from the wrong port.
 		 */
-		if (batadv_is_my_client(bat_priv, dat_entry->mac_addr,
-					BATADV_NO_FLAGS)) {
+		if (batadv_is_my_client(bat_priv, dat_entry->mac_addr, vid)) {
 			ret = true;
 			goto out;
 		}
-- 
1.8.3.2

Re: [B.A.T.M.A.N.] [PATCHv2 maint] batman-adv: fix local TT check for outgoing arp requests in DAT

[Marek Lindner]

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On Saturday 29 March 2014 17:27:38 Antonio Quartulli wrote:
> From: Antonio Quartulli <antonio@open-mesh.com>
> 
> Change introduced by d6bd8b36fa1f3d72a6fd5942a6e9bde6ddafcd0d
> ("batman-adv: make DAT drop ARP requests targeting local clients")
> implements a check that prevents DAT from using the caching
> mechanism when the client that is supposed to provide a reply
> to an arp request is local.
> 
> However change brought by 3e26722bc9f248ec4316749fc1957365c0fa5e4b
> ("batman-adv: make the Distributed ARP Table vlan aware")
> has not converted the above check into its vlan aware version
> thus making it useless when the local client is behind a vlan.
> 
> Fix the behaviour by properly specifying the vlan when
> checking for a client being local or not.
> 
> Reported-by: Simon Wunderlich <simon@open-mesh.com>
> Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
> ---
> 
> Changes from v2:
> - added reported-by clause
> 
>  distributed-arp-table.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)

Applied in revision 1c2e700.

Thanks,
Marek

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