[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 35911bd4dbe83b82420d7deec70a705de41d3296..8e3735714c1c42e1c61145b59f95e40fee23821e 100644 (file)
--- a/include/linux/irda.h
+++ b/include/linux/irda.h
@@ -242,6 +242,7 @@ enum nl80211_attrs {
 /* 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 3013c49ab975e865b593746911f0d88f2921c8b0..25a3444a9234f1faba7ba2e2e88b18e452d1f44f 100644 (file)
--- a/net/irda/irlap_frame.c
+++ b/net/irda/irlap_frame.c
@@ -101,6 +101,13 @@ void irlap_queue_xmit(struct irlap_cb *self, struct sk_buff *skb)
 
        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);
 }