[patch 09/22] can: omit received RTR frames for single ID filterlists

[Greg KH]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Oliver Hartkopp <oliver@xxxxxxxxxxxx>

commit f706644d55f90e8306d87060168fef33804d6dd9 upstream.

Since commit d253eee20195b25e298bf162a6e72f14bf4803e5 the single CAN
identifier filter lists handle only non-RTR CAN frames.

So we need to omit the check of these filter lists when receiving RTR
CAN frames.

Signed-off-by: Oliver Hartkopp <oliver@xxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 net/can/af_can.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -622,7 +622,10 @@ static int can_rcv_filter(struct dev_rcv
 		}
 	}
 
-	/* check CAN_ID specific entries */
+	/* check filterlists for single non-RTR can_ids */
+	if (can_id & CAN_RTR_FLAG)
+		return matches;
+
 	if (can_id & CAN_EFF_FLAG) {
 		hlist_for_each_entry_rcu(r, n, &d->rx[RX_EFF], list) {
 			if (r->can_id == can_id) {

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/