aboutsummaryrefslogtreecommitdiffstats
path: root/net/can
diff options
context:
space:
mode:
authorOliver Hartkopp <socketcan@hartkopp.net>2013-01-17 18:43:41 +0100
committerMarc Kleine-Budde <mkl@pengutronix.de>2013-01-26 16:59:01 +0100
commitd904d3edcbb26efc86ea3575bb4265559801a94b (patch)
tree3589f467d029ea18c1740841ba5dd12323bc3b7a /net/can
parent156c2bb9f88065c8da78814f98fde665a5cbb527 (diff)
can: gw: make routing to the incoming CAN interface configurable
Introduce new configuration flag CGW_FLAGS_CAN_IIF_TX_OK to configure if a CAN sk_buff that has been routed with can-gw is allowed to be send back to the originating CAN interface. Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'net/can')
-rw-r--r--net/can/gw.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/net/can/gw.c b/net/can/gw.c
index 574dda78eb0f..37a3efb7cc9d 100644
--- a/net/can/gw.c
+++ b/net/can/gw.c
@@ -52,6 +52,7 @@
#include <linux/skbuff.h>
#include <linux/can.h>
#include <linux/can/core.h>
+#include <linux/can/skb.h>
#include <linux/can/gw.h>
#include <net/rtnetlink.h>
#include <net/net_namespace.h>
@@ -347,6 +348,13 @@ static void can_can_gw_rcv(struct sk_buff *skb, void *data)
return;
}
+ /* is sending the skb back to the incoming interface not allowed? */
+ if (!(gwj->flags & CGW_FLAGS_CAN_IIF_TX_OK) &&
+ skb_headroom(skb) == sizeof(struct can_skb_priv) &&
+ (((struct can_skb_priv *)(skb->head))->ifindex ==
+ gwj->dst.dev->ifindex))
+ return;
+
/*
* clone the given skb, which has not been done in can_rcv()
*

Privacy Policy