[IrDA]: Monitor mode.
Through the IrDA netlink set mode command, we switch to IrDA monitor
mode, where one IrLAP instance receives all the packets on the media,
without ever responding to them.
Signed-off-by: Samuel Ortiz <samuel@sortiz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/irda.h b/include/linux/irda.h
index 35911bd..8e37357 100644
--- a/include/linux/irda.h
+++ b/include/linux/irda.h
@@ -242,6 +242,7 @@
/* IrDA modes */
#define IRDA_MODE_PRIMARY 0x1
#define IRDA_MODE_SECONDARY 0x2
+#define IRDA_MODE_MONITOR 0x4
#endif /* KERNEL_IRDA_H */
diff --git a/net/irda/irlap_frame.c b/net/irda/irlap_frame.c
index 3013c49a..25a3444 100644
--- a/net/irda/irlap_frame.c
+++ b/net/irda/irlap_frame.c
@@ -101,6 +101,13 @@
irlap_insert_info(self, skb);
+ if (unlikely(self->mode & IRDA_MODE_MONITOR)) {
+ IRDA_DEBUG(3, "%s(): %s is in monitor mode\n", __FUNCTION__,
+ self->netdev->name);
+ dev_kfree_skb(skb);
+ return;
+ }
+
dev_queue_xmit(skb);
}